/* roulang page: index */
:root{
  --bg-deep:#070C1A;
  --bg-layer:#0C1428;
  --bg-panel:rgba(255,255,255,.06);
  --bg-thin:rgba(255,255,255,.04);
  --line-soft:rgba(255,255,255,.10);
  --line-soft2:rgba(255,255,255,.06);
  --brand:#2DE1C2;
  --brand-deep:#12A88E;
  --accent:#FF6B4A;
  --warn:#FFC94D;
  --text-hi:#EAF2FF;
  --text-mid:#A7B6D0;
  --text-low:#6E7E9C;
  --radius-card:20px;
  --radius-hero:24px;
  --radius-btn:999px;
  --radius-input:14px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset, 0 18px 40px rgba(0,0,0,.45);
  --shadow-hover:0 24px 56px rgba(0,0,0,.55), 0 0 0 1px rgba(45,225,194,.35);
  --ease:cubic-bezier(.22,.61,.36,1);
  --space-section:100px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text-mid);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Source Han Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;text-underline-offset:2px;transition:color .2s var(--ease)}
a:hover{color:#5CF0D6}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text-hi);letter-spacing:0;font-weight:800}
p{margin:0 0 1.1em}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 16px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1280px){.container{padding:0 32px}}
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:var(--space-section) 0}}
.section--layer{background:var(--bg-layer);border-top:1px solid var(--line-soft2);border-bottom:1px solid var(--line-soft2)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px}
.sec-title{position:relative;font-size:clamp(22px,3vw,29px);line-height:1.35;font-weight:700;padding-left:16px}
.sec-title::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:22px;border-radius:3px;background:var(--brand);box-shadow:0 0 14px rgba(45,225,194,.6)}
.sec-sub{margin:10px 0 0;font-size:15px;color:var(--text-low);max-width:62ch}
.sec-more{font-size:14px;font-weight:600;white-space:nowrap}
.glass{
  position:relative;
  background:var(--bg-panel);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.glass::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);
  opacity:.7;pointer-events:none;
}
/* ---------- 导航 ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-head.is-stuck{
  background:rgba(7,12,26,.82);
  backdrop-filter:blur(22px);
  -webkit-backdrop-filter:blur(22px);
  border-bottom-color:rgba(255,255,255,.08);
}
.nav{display:flex;align-items:center;gap:18px;height:72px}
.logo{display:flex;align-items:center;gap:11px;color:var(--text-hi);flex-shrink:0}
.logo:hover{color:var(--text-hi)}
.logo__mark{
  width:34px;height:34px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  display:grid;place-items:center;flex-shrink:0;
  box-shadow:0 6px 18px rgba(45,225,194,.28);
}
.logo__mark span{width:12px;height:12px;border-radius:4px;background:#062024;display:block;transform:rotate(45deg)}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__main{font-size:17px;font-weight:800;letter-spacing:.5px}
.logo__sub{font-size:11px;color:var(--text-low);letter-spacing:1px;font-weight:500}
.nav__pill{
  display:none;align-items:center;gap:4px;margin-left:auto;
  padding:5px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.04);border:1px solid var(--line-soft2);
}
.nav__link{
  position:relative;display:block;padding:8px 15px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;color:var(--text-mid);white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav__link:hover{color:var(--text-hi);background:rgba(255,255,255,.06)}
.nav__link.is-active{color:#062024;background:var(--brand);font-weight:700;box-shadow:0 6px 18px rgba(45,225,194,.28)}
.nav__cta{display:none}
.nav__burger{
  margin-left:auto;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.06);border:1px solid var(--line-soft);
  display:grid;place-items:center;cursor:pointer;
}
.nav__burger span{display:block;width:18px;height:2px;background:var(--text-hi);border-radius:2px;position:relative}
.nav__burger span::before,.nav__burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-hi);border-radius:2px}
.nav__burger span::before{top:-6px}
.nav__burger span::after{top:6px}
@media (min-width:1024px){
  .nav__pill{display:flex}
  .nav__cta{display:inline-flex}
  .nav__burger{display:none}
  .nav{gap:24px}
}
/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,8,16,.7);backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s;z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);z-index:80;
  background:#0A1122;border-left:1px solid var(--line-soft);
  transform:translateX(102%);transition:transform .32s var(--ease);
  display:flex;flex-direction:column;padding:20px 20px 26px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer__close{width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.06);border:1px solid var(--line-soft);color:var(--text-hi);cursor:pointer;font-size:18px;line-height:1}
.drawer__nav{display:flex;flex-direction:column;gap:6px}
.drawer__nav a{
  padding:13px 14px;border-radius:14px;color:var(--text-mid);font-size:15px;font-weight:500;
  border:1px solid transparent;opacity:0;transform:translateX(12px);
}
.drawer.is-open .drawer__nav a{animation:drawerIn .38s var(--ease) forwards}
.drawer.is-open .drawer__nav a:nth-child(1){animation-delay:.05s}
.drawer.is-open .drawer__nav a:nth-child(2){animation-delay:.1s}
.drawer.is-open .drawer__nav a:nth-child(3){animation-delay:.15s}
.drawer.is-open .drawer__nav a:nth-child(4){animation-delay:.2s}
.drawer.is-open .drawer__nav a:nth-child(5){animation-delay:.25s}
.drawer.is-open .drawer__nav a:nth-child(6){animation-delay:.3s}
.drawer__nav a:hover,.drawer__nav a.is-active{
  color:var(--text-hi);background:rgba(45,225,194,.10);border-color:rgba(45,225,194,.35)
}
@keyframes drawerIn{to{opacity:1;transform:translateX(0)}}
.drawer__foot{margin-top:auto;padding-top:22px}
/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.btn:active{transform:translateY(0);filter:brightness(.95)}
.btn--primary{
  color:#04211C;background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 0 1px rgba(45,225,194,.5), 0 10px 30px rgba(45,225,194,.28);
}
.btn--primary:hover{color:#04211C;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(45,225,194,.6),0 14px 36px rgba(45,225,194,.4)}
.btn--accent{
  color:#2B0A02;background:linear-gradient(135deg,#FF8A6C,var(--accent));
  box-shadow:0 0 0 1px rgba(255,107,74,.5), 0 10px 30px rgba(255,107,74,.30);
}
.btn--accent:hover{color:#2B0A02;filter:brightness(1.08);transform:translateY(-2px)}
.btn--ghost{
  color:var(--text-hi);background:rgba(255,255,255,.05);border-color:var(--line-soft);
  backdrop-filter:blur(12px);
}
.btn--ghost:hover{color:var(--text-hi);border-color:rgba(45,225,194,.5);background:rgba(45,225,194,.10);transform:translateY(-2px)}
.btn--block{width:100%}
.btn--sm{padding:9px 20px;font-size:14px}
/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:8px;font-size:12px;font-weight:600;letter-spacing:.2px;
  background:rgba(255,255,255,.07);color:var(--text-mid);border:1px solid var(--line-soft);
}
.badge--brand{background:rgba(45,225,194,.12);color:var(--brand);border-color:rgba(45,225,194,.32)}
.badge--gold{background:rgba(255,201,77,.14);color:var(--warn);border-color:rgba(255,201,77,.32)}
.badge--coral{background:rgba(255,107,74,.14);color:#FF9A80;border-color:rgba(255,107,74,.32)}
.mono{font-variant-numeric:tabular-nums}
/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:48px 0 56px;border-bottom:1px solid var(--line-soft2)}
.hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.30;filter:saturate(1.1);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,var(--bg-deep) 12%,rgba(7,12,26,.72) 55%,rgba(7,12,26,.35) 100%);
}
.hero__glow{
  position:absolute;width:520px;height:520px;border-radius:50%;
  left:-140px;top:-160px;z-index:1;
  background:radial-gradient(circle,rgba(45,225,194,.22),transparent 68%);
  animation:breathe 14s ease-in-out infinite;
}
@keyframes breathe{0%,100%{opacity:.55;transform:scale(1)}50%{opacity:1;transform:scale(1.12)}}
.hero__inner{position:relative;z-index:2;display:grid;gap:40px;align-items:center}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:20px;
  padding:6px 14px;border-radius:var(--radius-btn);font-size:13px;font-weight:600;color:var(--brand);
  background:rgba(45,225,194,.10);border:1px solid rgba(45,225,194,.28);
}
.hero__eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand)}
.hero__title{
  font-size:clamp(28px,4.6vw,46px);line-height:1.22;font-weight:800;margin-bottom:18px;
}
.hero__title em{font-style:normal;color:var(--brand)}
.hero__sub{font-size:17px;line-height:1.8;color:var(--text-mid);max-width:56ch;margin-bottom:26px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:18px}
.hero__trust{font-size:13px;color:var(--text-low);margin:0}
.hero__stage{position:relative;justify-self:center;width:100%;max-width:340px}
.hero__card{
  position:relative;border-radius:var(--radius-hero);overflow:hidden;aspect-ratio:9/16;
  border:1px solid var(--line-soft);box-shadow:0 30px 70px rgba(0,0,0,.6);
  background:#0A1122;
}
.hero__card img{width:100%;height:100%;object-fit:cover;opacity:.92}
.hero__card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,26,.10) 0%,rgba(7,12,26,.30) 45%,rgba(7,12,26,.92) 100%);
}
.hero__card-tag{
  position:absolute;top:16px;left:16px;z-index:2;
  padding:5px 12px;border-radius:8px;font-size:12px;font-weight:700;color:#04211C;
  background:var(--warn);
}
.hero__card-bar{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:18px 20px}
.hero__card-bar strong{display:block;color:var(--text-hi);font-size:16px;font-weight:700;margin-bottom:4px}
.hero__card-bar span{font-size:12px;color:var(--text-low)}
.hero__card-shadow{
  position:absolute;inset:auto 0 -18px auto;width:82%;height:88%;right:-22px;bottom:22px;
  border-radius:var(--radius-hero);border:1px solid rgba(255,255,255,.07);
  background:rgba(255,255,255,.03);z-index:-1;
}
@media (min-width:1024px){
  .hero{padding:76px 0 92px}
  .hero__inner{grid-template-columns:1.15fr .85fr;gap:56px}
  .hero__stage{justify-self:end;max-width:352px}
}
/* ---------- 指标条 ---------- */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:44px;position:relative;z-index:2}
@media (min-width:768px){.stats{grid-template-columns:repeat(4,1fr);gap:20px}}
.stat{
  padding:18px 20px;border-radius:var(--radius-card);
  background:rgba(255,255,255,.05);border:1px solid var(--line-soft);
  backdrop-filter:blur(14px);
}
.stat b{display:block;font-size:clamp(22px,3vw,28px);font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2}
.stat span{font-size:13px;color:var(--text-low)}
/* ---------- 横向轨道 ---------- */
.rail-wrap{position:relative}
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:6px 2px 20px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
  scrollbar-width:none;-ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none}
.rail__card{
  flex:0 0 258px;scroll-snap-align:start;border-radius:var(--radius-card);overflow:hidden;
  background:var(--bg-panel);border:1px solid var(--line-soft);box-shadow:var(--shadow-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rail__card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(45,225,194,.45)}
.rail__media{position:relative;aspect-ratio:3/4;overflow:hidden;background:#0A1122}
.rail__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.rail__card:hover .rail__media img{transform:scale(1.05)}
.rail__no{
  position:absolute;top:12px;left:12px;padding:3px 9px;border-radius:8px;
  font-size:12px;font-weight:800;color:#04211C;background:var(--brand);font-variant-numeric:tabular-nums;
}
.rail__time{
  position:absolute;top:12px;right:12px;padding:3px 9px;border-radius:8px;
  font-size:12px;color:var(--text-hi);background:rgba(7,12,26,.62);border:1px solid var(--line-soft);
}
.rail__body{padding:14px 16px 18px}
.rail__body h3{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rail__meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:var(--text-low)}
.rail__meta b{color:var(--accent);font-weight:700;font-variant-numeric:tabular-nums}
.rail-hint{font-size:13px;color:var(--text-low);white-space:nowrap}
/* ---------- 分类不对称栅格 ---------- */
.cat-grid{display:grid;gap:22px}
@media (min-width:1024px){.cat-grid{grid-template-columns:1fr 1fr 1fr;grid-template-rows:auto auto}}
.cat-main{
  position:relative;display:flex;flex-direction:column;justify-content:flex-end;
  min-height:320px;padding:26px;border-radius:var(--radius-hero);overflow:hidden;
  background:linear-gradient(180deg,rgba(7,12,26,.25),rgba(7,12,26,.92)),url('/assets/images/coverpic/cover-6.png') center/cover no-repeat;
  border:1px solid var(--line-soft);box-shadow:var(--shadow-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.cat-main:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(45,225,194,.45)}
.cat-main .cat-no{font-size:13px;font-weight:800;color:var(--warn);letter-spacing:2px;margin-bottom:12px}
.cat-main h3{font-size:clamp(20px,2.4vw,25px);font-weight:800;margin-bottom:12px}
.cat-main p{font-size:14px;line-height:1.8;color:var(--text-mid);margin-bottom:16px;max-width:44ch}
.cat-main .cat-go{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700}
@media (min-width:1024px){
  .cat-main{grid-column:span 2;grid-row:span 2;min-height:100%}
}
.cat-side{display:grid;gap:16px}
.cat-item{
  display:flex;align-items:center;gap:14px;padding:16px;
  border-radius:var(--radius-card);background:var(--bg-panel);border:1px solid var(--line-soft);
  box-shadow:var(--shadow-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.cat-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(45,225,194,.45);background:rgba(45,225,194,.06)}
.cat-item__thumb{
  width:72px;height:72px;border-radius:16px;overflow:hidden;flex-shrink:0;background:#0A1122;
}
.cat-item__thumb img{width:100%;height:100%;object-fit:cover}
.cat-item__body{min-width:0}
.cat-item__body h3{font-size:17px;font-weight:600;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cat-item__body p{font-size:13px;color:var(--text-low);margin:0 0 6px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.cat-item__body time{font-size:12px;color:var(--text-low);font-variant-numeric:tabular-nums}
/* ---------- 流程节点 ---------- */
.flow{display:grid;gap:18px;position:relative}
@media (min-width:768px){.flow{grid-template-columns:repeat(4,1fr);gap:22px}}
.flow::before{
  content:"";position:absolute;top:26px;left:6%;right:6%;height:2px;
  background:linear-gradient(90deg,rgba(45,225,194,.55),rgba(45,225,194,.08));display:none;
}
@media (min-width:768px){.flow::before{display:block}}
.flow__step{position:relative;padding:24px 20px;border-radius:var(--radius-card);background:var(--bg-panel);border:1px solid var(--line-soft);box-shadow:var(--shadow-card)}
.flow__dot{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  font-size:14px;font-weight:800;color:#04211C;background:var(--brand);
  box-shadow:0 0 0 6px rgba(45,225,194,.12);margin-bottom:16px;font-variant-numeric:tabular-nums;
}
.flow__step h3{font-size:17px;font-weight:600;margin-bottom:8px}
.flow__step p{font-size:14px;color:var(--text-mid);margin:0}
/* ---------- 列表卡（CMS） ---------- */
.cms-grid{display:grid;gap:22px}
@media (min-width:768px){.cms-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1280px){.cms-grid{grid-template-columns:repeat(3,1fr)}}
.cms-card{
  border-radius:var(--radius-card);background:var(--bg-panel);border:1px solid var(--line-soft);
  box-shadow:var(--shadow-card);overflow:hidden;min-height:240px;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.cms-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(45,225,194,.45)}
.cms-card__link{display:flex;flex-direction:column;height:100%;padding:22px;color:inherit}
.cms-card__link:hover{color:inherit}
.cms-card__title{
  font-size:17px;font-weight:600;line-height:1.6;margin:14px 0 10px;color:var(--text-hi);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-card__desc{
  font-size:14px;line-height:1.8;color:var(--text-mid);margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-card__meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12px;color:var(--text-low);border-top:1px solid var(--line-soft2);padding-top:14px;
}
.cms-card__meta time{font-variant-numeric:tabular-nums}
.cms-card__meta .link-more{color:var(--brand);font-weight:600}
.cms-empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;min-height:240px;border-radius:var(--radius-card);
  background:var(--bg-thin);border:1px dashed var(--line-soft);color:var(--text-mid);font-size:15px;text-align:center;padding:24px;
}
.cms-empty span{color:var(--text-low);font-size:13px}
/* ---------- 口碑 ---------- */
.voices{display:grid;gap:18px}
@media (min-width:768px){.voices{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1280px){.voices{grid-template-columns:repeat(4,1fr)}}
.voice{padding:20px;border-radius:var(--radius-card);background:rgba(255,255,255,.04);border:1px solid var(--line-soft2)}
.voice__top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex-shrink:0;
  border:1px solid rgba(45,225,194,.45);background:rgba(45,225,194,.12);
  display:grid;place-items:center;color:var(--brand);font-weight:700;font-size:14px;
}
.voice__name{font-size:14px;font-weight:600;color:var(--text-hi);line-height:1.4}
.voice__time{font-size:12px;color:var(--text-low);font-variant-numeric:tabular-nums}
.voice p{font-size:14px;line-height:1.8;color:var(--text-mid);margin:0 0 12px}
.stars{display:flex;gap:3px;color:var(--brand);font-size:12px}
/* ---------- FAQ ---------- */
.faq{border-radius:var(--radius-hero);overflow:hidden;background:var(--bg-panel);border:1px solid var(--line-soft);box-shadow:var(--shadow-card)}
.faq details{border-bottom:1px solid var(--line-soft2)}
.faq details:last-child{border-bottom:0}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--text-hi);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{background:rgba(255,255,255,.03)}
.faq summary .faq__icon{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  border:1px solid var(--line-soft);color:var(--brand);font-size:15px;line-height:1;
  transition:transform .2s var(--ease),background .2s var(--ease);
}
.faq details[open] summary{color:var(--brand)}
.faq details[open] summary .faq__icon{transform:rotate(180deg);background:rgba(45,225,194,.12)}
.faq__body{
  padding:0 22px 22px 22px;font-size:15px;line-height:1.85;color:var(--text-mid);
  border-left:3px solid transparent;
}
.faq details[open] .faq__body{border-left-color:rgba(45,225,194,.55);margin-left:22px;padding-left:18px;animation:fadeIn .3s var(--ease)}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}
/* ---------- CTA 表单 ---------- */
.cta{
  position:relative;overflow:hidden;border-radius:var(--radius-hero);
  border:1px solid var(--line-soft);box-shadow:var(--shadow-card);
}
.cta__bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:.22}
.cta::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(7,12,26,.94),rgba(7,12,26,.72))}
.cta__inner{position:relative;z-index:2;display:grid;gap:36px;padding:36px 24px}
@media (min-width:768px){.cta__inner{padding:52px 44px}}
@media (min-width:1024px){.cta__inner{grid-template-columns:1fr 1fr;gap:56px;align-items:center}}
.cta__inner h2{font-size:clamp(22px,3vw,30px);line-height:1.35;font-weight:800;margin-bottom:14px}
.cta__inner p{font-size:15px;color:var(--text-mid);margin:0 0 20px;max-width:46ch}
.cta__list{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-mid)}
.cta__list li{display:flex;align-items:flex-start;gap:10px}
.cta__list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px;flex-shrink:0}
.form{display:grid;gap:16px;padding:26px;border-radius:var(--radius-hero);background:rgba(255,255,255,.05);border:1px solid var(--line-soft);backdrop-filter:blur(16px)}
.field label{display:block;font-size:13px;color:var(--text-mid);margin-bottom:7px;font-weight:500}
.field input,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--radius-input);
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  color:var(--text-hi);font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-low)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(45,225,194,.18);
}
.field textarea{min-height:96px;resize:vertical}
.form__note{font-size:12px;color:var(--text-low);text-align:center;margin:0}
/* ---------- 页脚 ---------- */
.site-foot{background:var(--bg-layer);border-top:1px solid var(--line-soft2);position:relative;padding:52px 0 26px}
.site-foot::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--brand),transparent 62%)}
.foot-grid{display:grid;gap:32px}
@media (min-width:640px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.foot-col h4{font-size:15px;font-weight:700;color:var(--text-hi);margin-bottom:16px}
.foot-col p{font-size:13px;line-height:1.9;color:var(--text-low);margin:0 0 12px;max-width:34ch}
.foot-col li{margin-bottom:10px}
.foot-col a{font-size:14px;color:var(--text-mid)}
.foot-col a:hover{color:var(--brand)}
.foot-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line-soft2);
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-low);
}
.foot-bottom .mono{font-variant-numeric:tabular-nums}
@media (max-width:639px){
  .logo__main{font-size:16px}
  .hero__actions .btn{width:100%}
  .sec-head{margin-bottom:26px}
}

/* roulang page: category1 */
:root{
  --bg-deep:#070C1A;
  --bg-layer:#0C1428;
  --bg-panel:rgba(255,255,255,.06);
  --bg-panel-soft:rgba(255,255,255,.04);
  --line-soft:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --brand-primary:#2DE1C2;
  --brand-primary-deep:#12A88E;
  --brand-accent:#FF6B4A;
  --brand-warn:#FFC94D;
  --text-hi:#EAF2FF;
  --text-mid:#A7B6D0;
  --text-low:#6E7E9C;
  --radius-card:20px;
  --radius-hero:24px;
  --radius-field:14px;
  --radius-badge:8px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset,0 18px 40px rgba(0,0,0,.45);
  --shadow-card-hover:0 24px 56px rgba(0,0,0,.55);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-deep);color:var(--text-mid);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Source Han Sans SC',system-ui,sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;color:var(--text-hi);font-weight:700;letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.container{max-width:1240px;margin:0 auto;padding:0 16px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1280px){.container{padding:0 32px}}

/* ---------- Header ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-head.is-scrolled{
  background:rgba(7,12,26,.82);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom-color:rgba(255,255,255,.08);
}
.nav{display:flex;align-items:center;gap:18px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo__mark{
  width:30px;height:30px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-deep));
  display:grid;place-items:center;box-shadow:0 8px 20px rgba(45,225,194,.28);
}
.logo__mark span{width:10px;height:10px;border:2px solid #05121C;border-radius:3px;display:block}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__main{font-size:16px;font-weight:800;color:var(--text-hi);letter-spacing:.4px}
.logo__sub{font-size:11px;color:var(--brand-primary);letter-spacing:.6px}
.nav__pill{
  display:none;align-items:center;gap:2px;margin-left:6px;
  padding:5px;border-radius:999px;background:rgba(255,255,255,.05);
  border:1px solid var(--line-soft);
}
.nav__link{
  position:relative;display:inline-block;padding:8px 13px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--text-mid);
  transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav__link:hover{color:var(--text-hi);background:rgba(255,255,255,.06)}
.nav__link.is-active{color:#04141A;background:var(--brand-primary);font-weight:600}
.nav__link:focus-visible{outline:2px solid var(--brand-primary);outline-offset:2px}
.nav__cta{display:none;margin-left:auto}
.nav__burger{
  margin-left:auto;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.06);border:1px solid var(--line-soft);
  display:grid;place-items:center;cursor:pointer;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav__burger:hover{border-color:rgba(45,225,194,.5)}
.nav__burger span{position:relative;display:block;width:18px;height:2px;background:var(--text-hi);border-radius:2px}
.nav__burger span::before,.nav__burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-hi);border-radius:2px;
}
.nav__burger span::before{top:-6px}
.nav__burger span::after{top:6px}
@media(min-width:1024px){
  .nav__pill{display:flex}
  .nav__cta{display:inline-flex}
  .nav__burger{display:none}
}
/* drawer */
.nav-mask{
  position:fixed;inset:0;background:rgba(4,8,18,.6);backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);z-index:79;
}
.nav-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,330px);z-index:80;
  background:#0A1122;border-left:1px solid var(--line-soft);
  transform:translateX(102%);transition:transform .38s var(--ease);
  padding:20px 20px 26px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.drawer-close{
  width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.06);
  border:1px solid var(--line-soft);color:var(--text-hi);font-size:20px;cursor:pointer;line-height:1;
}
.drawer-close:hover{border-color:rgba(45,225,194,.5)}
.nav-drawer a.drawer-link{
  padding:13px 14px;border-radius:14px;font-size:15px;color:var(--text-mid);
  background:rgba(255,255,255,.03);border:1px solid transparent;
  opacity:0;transform:translateX(14px);
}
.nav-drawer.is-open a.drawer-link{animation:drawerIn .42s var(--ease) forwards}
.nav-drawer a.drawer-link:hover{color:var(--text-hi);border-color:var(--line-soft)}
.nav-drawer a.drawer-link.is-active{color:#04141A;background:var(--brand-primary);font-weight:600}
@keyframes drawerIn{to{opacity:1;transform:translateX(0)}}
.drawer-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line-soft)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .18s var(--ease),filter .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease);
}
.btn--primary{
  background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-deep));
  color:#04141A;box-shadow:0 0 0 1px rgba(45,225,194,.5),0 10px 30px rgba(45,225,194,.28);
}
.btn--primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(45,225,194,.6),0 16px 38px rgba(45,225,194,.36)}
.btn--accent{
  background:linear-gradient(135deg,#FF8464,var(--brand-accent));color:#2A0C04;
  box-shadow:0 0 0 1px rgba(255,107,74,.5),0 10px 30px rgba(255,107,74,.35);
}
.btn--accent:hover{transform:translateY(-2px);filter:brightness(1.06)}
.btn--ghost{
  background:rgba(255,255,255,.05);color:var(--text-hi);border-color:var(--line-strong);
}
.btn--ghost:hover{transform:translateY(-2px);border-color:rgba(45,225,194,.6);background:rgba(45,225,194,.08)}
.btn:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.35)}
.btn:focus-visible{outline:2px solid var(--brand-primary);outline-offset:2px}
.btn--sm{padding:9px 16px;font-size:14px}
.btn--block{width:100%}

/* ---------- Badges / pills ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--radius-badge);
  font-size:12px;font-weight:600;letter-spacing:.2px;
}
.badge--brand{background:rgba(45,225,194,.14);color:var(--brand-primary);border:1px solid rgba(45,225,194,.32)}
.badge--warn{background:rgba(255,201,77,.14);color:var(--brand-warn);border:1px solid rgba(255,201,77,.34)}
.badge--soft{background:rgba(255,255,255,.06);color:var(--text-mid);border:1px solid var(--line-soft)}
.badge--accent{background:rgba(255,107,74,.14);color:#FF9078;border:1px solid rgba(255,107,74,.34)}
.stat-pill{
  display:flex;flex-direction:column;gap:2px;padding:12px 16px;border-radius:14px;
  background:var(--bg-panel);border:1px solid var(--line-soft);backdrop-filter:blur(14px);
}
.stat-pill b{font-size:20px;color:var(--brand-primary);font-weight:800;font-variant-numeric:tabular-nums}
.stat-pill span{font-size:13px;color:var(--text-low)}

/* ---------- Page head ---------- */
.pagehead{position:relative;overflow:hidden;border-bottom:1px solid var(--line-soft)}
.pagehead__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.34;filter:saturate(.85);
}
.pagehead__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,12,26,.96) 0%,rgba(7,12,26,.82) 48%,rgba(7,12,26,.55) 100%);
}
.pagehead__inner{position:relative;z-index:2;padding:44px 0 46px;max-width:820px}
.crumb{font-size:14px;color:var(--text-low);display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:14px}
.crumb a:hover{color:var(--brand-primary)}
.crumb i{font-style:normal;color:#3C4A66}
.pagehead h1{
  font-size:clamp(28px,4.4vw,46px);line-height:1.2;font-weight:800;margin-bottom:14px;
}
.pagehead h1 em{font-style:normal;color:var(--brand-primary)}
.pagehead p{font-size:17px;color:var(--text-mid);max-width:640px}
.pagehead__stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
@media(min-width:768px){.pagehead__inner{padding:64px 0 68px}}

/* ---------- Sections ---------- */
.sec{padding:64px 0}
@media(min-width:1024px){.sec{padding:96px 0}}
.sec--alt{background:var(--bg-layer);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:34px}
.sec-head h2{
  font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;
  padding-left:14px;position:relative;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:22px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand-primary),var(--brand-primary-deep));
}
.sec-head p{font-size:15px;color:var(--text-low);max-width:520px;margin-top:8px}
.sec-link{color:var(--brand-primary);font-size:15px;font-weight:600}
.sec-link:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- Cards ---------- */
.card{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--radius-card);background:var(--bg-panel);
  border:1px solid var(--line-soft);box-shadow:var(--shadow-card);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;z-index:3;
  background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.34),rgba(255,255,255,0));
}
.card:hover{transform:translateY(-4px);border-color:rgba(45,225,194,.35);box-shadow:var(--shadow-card-hover),0 0 0 1px rgba(45,225,194,.35)}
.card__media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#0A1122}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.card:hover .card__media img{transform:scale(1.04)}
.card__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,26,.05),rgba(7,12,26,.78));
}
.card__tag{position:absolute;left:12px;top:12px;z-index:2}
.card__body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card__body h3{
  font-size:18px;font-weight:600;line-height:1.45;color:var(--text-hi);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__body p{
  font-size:14px;color:var(--text-mid);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card__meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line-soft)}
.card__meta time{font-size:13px;color:var(--text-low)}
.card__meta a{font-size:13px;font-weight:600;color:var(--brand-primary)}
.card__meta a:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- Text blocks ---------- */
.split{display:grid;gap:28px}
@media(min-width:1024px){.split{grid-template-columns:1.02fr .98fr;gap:56px;align-items:start}}
.prose h3{font-size:19px;font-weight:600;margin-bottom:10px}
.prose p{font-size:16px;color:var(--text-mid);margin-bottom:16px}
.prose p:last-child{margin-bottom:0}
.tick{display:flex;flex-direction:column;gap:12px;margin-top:8px}
.tick li{
  display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border-radius:16px;
  background:var(--bg-panel-soft);border:1px solid var(--line-soft);
}
.tick li b{flex-shrink:0;width:26px;height:26px;border-radius:9px;display:grid;place-items:center;
  font-size:13px;font-weight:800;color:#04141A;background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-deep))}
.tick li span{font-size:15px;color:var(--text-mid);line-height:1.7}
.tick li strong{color:var(--text-hi);font-weight:600}

/* ---------- Steps (timeline) ---------- */
.steps{position:relative;display:flex;flex-direction:column;gap:0;margin-top:8px}
.step{
  position:relative;padding:0 0 26px 34px;border-left:1px solid var(--line-soft);
}
.step:last-child{border-left-color:transparent;padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-6px;top:4px;width:11px;height:11px;border-radius:50%;
  background:var(--bg-deep);border:2px solid var(--brand-primary);box-shadow:0 0 0 4px rgba(45,225,194,.1);
}
.step h3{font-size:17px;font-weight:600;margin-bottom:6px}
.step p{font-size:15px;color:var(--text-mid)}

/* ---------- Compare bar ---------- */
.compare{display:grid;gap:14px;margin-top:24px}
@media(min-width:768px){.compare{grid-template-columns:repeat(3,1fr)}}
.compare__item{padding:18px;border-radius:16px;background:var(--bg-panel-soft);border:1px solid var(--line-soft)}
.compare__item h4{font-size:16px;font-weight:600;margin-bottom:8px;color:var(--text-hi)}
.compare__item p{font-size:14px;color:var(--text-mid)}
.bar{height:6px;border-radius:999px;background:rgba(255,255,255,.08);margin-top:12px;overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand-primary),var(--brand-primary-deep))}
.bar.is-accent i{background:linear-gradient(90deg,#FF9078,var(--brand-accent))}

/* ---------- FAQ ---------- */
.faq{border-radius:var(--radius-card);border:1px solid var(--line-soft);background:var(--bg-panel);
  box-shadow:var(--shadow-card);overflow:hidden;backdrop-filter:blur(18px)}
.faq details{border-bottom:1px solid var(--line-soft)}
.faq details:last-child{border-bottom:0}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:16px;font-weight:600;color:var(--text-hi);position:relative;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{background:rgba(255,255,255,.04)}
.faq summary:focus-visible{outline:2px solid var(--brand-primary);outline-offset:-3px}
.faq summary::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:0 3px 3px 0;
  background:var(--brand-primary);opacity:0;transition:opacity .2s var(--ease);
}
.faq details[open] summary::before{opacity:1}
.faq summary i{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;border:1px solid var(--line-strong);
  display:grid;place-items:center;font-style:normal;font-size:15px;color:var(--brand-primary);
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.faq details[open] summary i{transform:rotate(180deg);border-color:rgba(45,225,194,.6)}
.faq .ans{padding:0 22px 22px 22px;font-size:15px;color:var(--text-mid);line-height:1.85;animation:fadeUp .3s var(--ease)}
@keyframes fadeUp{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-hero);
  border:1px solid var(--line-soft);background:var(--bg-panel);box-shadow:var(--shadow-card);
}
.cta-band__bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.26;
}
.cta-band__bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,12,26,.96),rgba(7,12,26,.72))}
.cta-band__inner{position:relative;z-index:2;padding:30px 24px;display:flex;flex-direction:column;gap:20px}
@media(min-width:900px){.cta-band__inner{flex-direction:row;align-items:center;justify-content:space-between;padding:38px 40px}}
.cta-band__inner h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.4;margin-bottom:8px}
.cta-band__inner p{font-size:15px;color:var(--text-mid);max-width:560px}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- Metrics strip ---------- */
.metrics{display:grid;gap:14px}
@media(min-width:640px){.metrics{grid-template-columns:repeat(3,1fr)}}
@media(min-width:1024px){.metrics{grid-template-columns:repeat(4,1fr)}}
.metric{
  padding:20px;border-radius:18px;background:var(--bg-panel);border:1px solid var(--line-soft);
  backdrop-filter:blur(18px);transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.metric:hover{border-color:rgba(45,225,194,.35);transform:translateY(-3px)}
.metric b{display:block;font-size:26px;font-weight:800;color:var(--brand-primary);font-variant-numeric:tabular-nums;line-height:1.2}
.metric span{display:block;font-size:13px;color:var(--text-low);margin-top:6px}

/* ---------- Footer ---------- */
.site-foot{margin-top:0;padding-top:64px;position:relative;background:var(--bg-layer);border-top:1px solid var(--line-soft)}
.site-foot::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(45,225,194,.7),rgba(45,225,194,0));
}
.foot-grid{display:grid;gap:32px;padding-bottom:44px}
@media(min-width:640px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.foot-col p{font-size:14px;color:var(--text-low);line-height:1.8;margin-bottom:10px;max-width:340px}
.foot-col h4{font-size:15px;font-weight:600;color:var(--text-hi);margin-bottom:16px}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col ul li{font-size:14px;color:var(--text-low)}
.foot-col ul li a{font-size:14px;color:var(--text-mid);transition:color .2s var(--ease)}
.foot-col ul li a:hover{color:var(--brand-primary)}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  padding:20px 0 30px;border-top:1px solid var(--line-soft);font-size:13px;color:var(--text-low);
}
@media(max-width:767px){
  body{font-size:15px}
  .sec{padding:56px 0}
  .sec-head{margin-bottom:26px}
  .pagehead__inner{padding:36px 0 40px}
  .pagehead p{font-size:16px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: article */
:root{
  --bg-deep:#070C1A;
  --bg-layer:#0C1428;
  --bg-panel:rgba(255,255,255,.06);
  --bg-panel-soft:rgba(255,255,255,.04);
  --line-soft:rgba(255,255,255,.10);
  --brand-primary:#2DE1C2;
  --brand-primary-deep:#12A88E;
  --brand-accent:#FF6B4A;
  --brand-warn:#FFC94D;
  --text-hi:#EAF2FF;
  --text-mid:#A7B6D0;
  --text-low:#6E7E9C;
  --radius-card:20px;
  --radius-hero:24px;
  --radius-field:14px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --shadow-card-hover:0 24px 56px rgba(0,0,0,.55);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text-mid);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Source Han Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
body a{color:var(--brand-primary);text-decoration:none;transition:color .2s ease}
body a:hover{color:var(--brand-primary);text-decoration:underline;text-underline-offset:3px}
img{max-width:100%;display:block;border-style:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:16px;padding-right:16px}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media (min-width:1280px){.container{padding-left:32px;padding-right:32px}}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-primary);color:#04121A;padding:10px 16px;border-radius:0 0 12px 0;z-index:200}
.skip-link:focus{left:0}

/* ---------- header / nav ---------- */
.site-head{position:sticky;top:0;z-index:60;background:rgba(7,12,26,.78);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--line-soft);transition:background .3s ease,box-shadow .3s ease}
.site-head.is-scrolled{background:rgba(7,12,26,.95);box-shadow:0 12px 30px rgba(0,0,0,.45)}
.nav{display:flex;align-items:center;gap:14px;height:70px}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text-hi);flex:0 0 auto}
.logo:hover{text-decoration:none}
.logo__mark{width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-deep));display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(45,225,194,.35)}
.logo__mark span{display:block;width:11px;height:11px;border:2px solid #04121A;border-radius:3px;transform:rotate(45deg)}
.logo__text{display:flex;flex-direction:column;line-height:1.08}
.logo__main{font-size:16px;font-weight:800;color:var(--text-hi);letter-spacing:.5px}
.logo__sub{font-size:11px;color:var(--brand-primary);letter-spacing:1.2px}
.nav__pill{display:none;align-items:center;gap:4px;margin-left:6px;padding:5px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line-soft)}
.nav__link{position:relative;padding:8px 14px;border-radius:999px;font-size:14px;font-weight:500;color:var(--text-mid);white-space:nowrap;transition:color .2s ease,background .2s ease}
.nav__link:hover{color:var(--text-hi);background:rgba(255,255,255,.07);text-decoration:none}
.nav__link.is-active{color:#04121A;background:var(--brand-primary);font-weight:600}
.nav__cta{display:none}
.nav__burger{margin-left:auto;width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;background:rgba(255,255,255,.06);border:1px solid var(--line-soft);border-radius:14px;cursor:pointer;transition:border-color .2s ease,background .2s ease}
.nav__burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-hi);position:relative}
.nav__burger span::before,.nav__burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text-hi)}
.nav__burger span::before{top:-6px}
.nav__burger span::after{top:6px}
.nav__burger:hover{border-color:rgba(45,225,194,.5);background:rgba(45,225,194,.10)}
@media (min-width:1024px){
  .nav__pill{display:flex}
  .nav__cta{display:inline-flex;margin-left:auto}
  .nav__burger{display:none}
}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;cursor:pointer;text-decoration:none;transition:transform .18s var(--ease),filter .18s ease,box-shadow .18s ease,border-color .18s ease,background .18s ease}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn:focus-visible{outline:2px solid var(--brand-primary);outline-offset:2px}
.btn--primary{background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-deep));color:#04121A;box-shadow:0 0 0 1px rgba(45,225,194,.5),0 10px 30px rgba(45,225,194,.28)}
.btn--primary:hover{filter:brightness(1.08);color:#04121A;box-shadow:0 0 0 1px rgba(45,225,194,.7),0 16px 38px rgba(45,225,194,.36)}
.btn--ghost{background:rgba(255,255,255,.06);border-color:var(--line-soft);color:var(--text-hi);backdrop-filter:blur(12px)}
.btn--ghost:hover{border-color:rgba(45,225,194,.45);color:var(--text-hi);background:rgba(45,225,194,.10)}
.btn--accent{background:linear-gradient(135deg,var(--brand-accent),#E4502F);color:#fff;box-shadow:0 10px 30px rgba(255,107,74,.35)}
.btn--sm{padding:10px 20px;font-size:14px}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;z-index:70;background:rgba(4,8,18,.68);backdrop-filter:blur(2px);opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;z-index:80;width:min(86vw,340px);height:100%;padding:22px;display:flex;flex-direction:column;gap:6px;background:rgba(9,15,30,.98);border-left:1px solid var(--line-soft);backdrop-filter:blur(20px);transform:translateX(102%);transition:transform .34s var(--ease);overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer__close{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:14px;background:rgba(255,255,255,.06);border:1px solid var(--line-soft);color:var(--text-hi);font-size:20px;line-height:1;cursor:pointer}
.drawer__close:hover{border-color:rgba(45,225,194,.5)}
.drawer__link{display:block;padding:14px 16px;border-radius:14px;font-size:15px;color:var(--text-mid);border:1px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease}
.drawer__link:hover{background:rgba(255,255,255,.06);color:var(--text-hi);text-decoration:none;border-color:var(--line-soft)}
.drawer__link.is-active{background:rgba(45,225,194,.14);color:var(--brand-primary);border-color:rgba(45,225,194,.35)}
.drawer__foot{margin-top:auto;padding-top:20px}
.drawer__foot .btn{width:100%}

/* ---------- breadcrumb ---------- */
.crumb{padding-top:26px;font-size:14px;color:var(--text-low);display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb a{color:var(--text-low)}
.crumb a:hover{color:var(--brand-primary)}
.crumb__sep{color:rgba(110,126,156,.6)}
.crumb__now{color:var(--text-mid);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article head ---------- */
.post-head{padding:26px 16px 0;max-width:860px;margin:0 auto}
@media (min-width:768px){.post-head{padding-left:24px;padding-right:24px}}
.post-head .badge{margin-bottom:16px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:8px;font-size:12px;font-weight:600;letter-spacing:.4px;background:rgba(45,225,194,.14);color:var(--brand-primary);border:1px solid rgba(45,225,194,.3)}
.badge--warn{background:rgba(255,201,77,.14);color:var(--brand-warn);border-color:rgba(255,201,77,.32)}
.badge--accent{background:rgba(255,107,74,.14);color:var(--brand-accent);border-color:rgba(255,107,74,.32)}
.post-head h1{font-size:clamp(26px,4.2vw,42px);font-weight:800;line-height:1.28;color:var(--text-hi);letter-spacing:0}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:18px;font-size:13px;color:var(--text-low)}
.post-meta span{display:inline-flex;align-items:center;gap:6px}
.post-meta i{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--brand-primary);opacity:.8}

/* ---------- cover ---------- */
.post-cover{max-width:860px;margin:26px auto 0;padding:0 16px}
@media (min-width:768px){.post-cover{padding:0 24px}}
.post-cover__box{position:relative;border-radius:var(--radius-hero);overflow:hidden;border:1px solid var(--line-soft);aspect-ratio:16/9;background:var(--bg-layer);box-shadow:var(--shadow-card)}
.post-cover__box img{width:100%;height:100%;object-fit:cover}
.post-cover__box::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,26,0) 45%,rgba(7,12,26,.7))}

/* ---------- lead ---------- */
.post-lead{max-width:860px;margin:26px auto 0;padding:0 16px}
@media (min-width:768px){.post-lead{padding:0 24px}}
.post-lead__inner{border-left:3px solid var(--brand-primary);padding:6px 0 6px 18px;font-size:16px;line-height:1.85;color:var(--text-mid);font-style:italic}

/* ---------- article body ---------- */
.post-body-wrap{max-width:860px;margin:0 auto;padding:34px 16px 0}
@media (min-width:768px){.post-body-wrap{padding-left:24px;padding-right:24px}}
.article-body{font-size:17px;line-height:1.9;color:var(--text-mid);min-height:240px}
.article-body > * + *{margin-top:1.1em}
.article-body h2{position:relative;font-size:clamp(20px,2.6vw,26px);font-weight:700;line-height:1.45;color:var(--text-hi);margin-top:1.9em;padding-left:16px}
.article-body h2::before{content:"";position:absolute;left:0;top:.34em;width:4px;height:1.02em;border-radius:2px;background:var(--brand-primary)}
.article-body h3{font-size:19px;font-weight:600;line-height:1.5;color:var(--text-hi);margin-top:1.6em}
.article-body h4{font-size:17px;font-weight:600;color:var(--text-hi);margin-top:1.4em}
.article-body p{margin:0}
.article-body ul,.article-body ol{padding-left:1.35em;margin-top:1em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.45em 0}
.article-body li::marker{color:var(--brand-primary)}
.article-body blockquote{margin:1.5em 0;padding:16px 20px;border-left:3px solid var(--brand-primary);border-radius:0 16px 16px 0;background:rgba(45,225,194,.06);color:var(--text-hi)}
.article-body blockquote p + p{margin-top:.7em}
.article-body img{border-radius:16px;margin:1.5em auto;border:1px solid var(--line-soft)}
.article-body figure{margin:1.7em 0}
.article-body figcaption{font-size:13px;color:var(--text-low);text-align:center;margin-top:10px}
.article-body a{color:var(--brand-primary);text-decoration:underline;text-underline-offset:3px}
.article-body strong{color:var(--text-hi);font-weight:600}
.article-body hr{border:0;height:1px;background:var(--line-soft);margin:2em 0}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.5em 0;border-radius:14px;overflow:hidden}
.article-body th,.article-body td{border:1px solid var(--line-soft);padding:11px 13px;text-align:left;vertical-align:top}
.article-body th{background:rgba(255,255,255,.05);color:var(--text-hi);font-weight:600}
.article-body code{padding:2px 7px;border-radius:6px;background:rgba(45,225,194,.10);color:var(--brand-primary);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}
.article-body pre{margin:1.5em 0;padding:16px 18px;border-radius:16px;background:rgba(0,0,0,.35);border:1px solid var(--line-soft);overflow-x:auto}
.article-body pre code{background:none;color:var(--text-hi);padding:0}

/* ---------- empty state ---------- */
.empty-state{min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;background:var(--bg-panel-soft);border:1px dashed var(--line-soft);border-radius:var(--radius-hero);padding:40px 24px}
.empty-state__title{font-size:19px;font-weight:700;color:var(--text-hi)}
.empty-state__desc{font-size:14px;color:var(--text-low)}

/* ---------- tags ---------- */
.post-tags{max-width:860px;margin:34px auto 0;padding:0 16px;display:flex;flex-wrap:wrap;align-items:center;gap:10px}
@media (min-width:768px){.post-tags{padding:0 24px}}
.post-tags__label{font-size:13px;color:var(--text-low);margin-right:4px}
.tag{display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;font-size:13px;color:var(--text-mid);background:rgba(255,255,255,.05);border:1px solid var(--line-soft);transition:color .2s ease,border-color .2s ease,background .2s ease}
.tag:hover{color:var(--brand-primary);border-color:rgba(45,225,194,.4);background:rgba(45,225,194,.09);text-decoration:none}

/* ---------- prev / next ---------- */
.post-nav{max-width:860px;margin:40px auto 0;padding:0 16px;display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:768px){.post-nav{padding:0 24px;grid-template-columns:1fr 1fr}}
.post-nav__item{display:flex;flex-direction:column;gap:8px;padding:20px;border-radius:var(--radius-card);background:var(--bg-panel);border:1px solid var(--line-soft);box-shadow:var(--shadow-card);transition:transform .24s var(--ease),border-color .24s ease,box-shadow .24s ease}
.post-nav__item:hover{transform:translateY(-4px);border-color:rgba(45,225,194,.35);box-shadow:var(--shadow-card-hover);text-decoration:none}
.post-nav__kicker{font-size:12px;letter-spacing:1px;color:var(--brand-primary);font-weight:600}
.post-nav__title{font-size:16px;font-weight:600;color:var(--text-hi);line-height:1.5}
.post-nav__item--next{text-align:right}
@media (min-width:768px){.post-nav__item--next{align-items:flex-end}}

/* ---------- section ---------- */
.section{margin-top:72px}
@media (min-width:1024px){.section{margin-top:96px}}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.section__title{position:relative;font-size:clamp(22px,3vw,29px);font-weight:700;color:var(--text-hi);padding-left:16px;line-height:1.3}
.section__title::before{content:"";position:absolute;left:0;top:.3em;width:4px;height:1.05em;border-radius:2px;background:var(--brand-primary)}
.section__more{font-size:14px;color:var(--brand-primary);white-space:nowrap}

/* ---------- cards ---------- */
.card-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr)}}
.post-card{position:relative;display:flex;flex-direction:column;background:var(--bg-panel);border:1px solid var(--line-soft);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .24s var(--ease),border-color .24s ease,box-shadow .24s ease}
.post-card:hover{transform:translateY(-4px);border-color:rgba(45,225,194,.35);box-shadow:var(--shadow-card-hover)}
.post-card__cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-layer)}
.post-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease)}
.post-card:hover .post-card__cover img{transform:scale(1.04)}
.post-card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card__title{font-size:17px;font-weight:600;line-height:1.5;color:var(--text-hi);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card__desc{font-size:14px;line-height:1.7;color:var(--text-mid);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-card__foot{margin-top:auto;padding-top:12px;border-top:1px solid var(--line-soft);display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--text-low)}
.post-card__foot .mono{font-size:12px}
.post-card__link{position:absolute;inset:0;z-index:2;text-indent:-9999px;overflow:hidden}

/* ---------- empty inside module ---------- */
.module-empty{min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;background:var(--bg-panel-soft);border:1px dashed var(--line-soft);border-radius:var(--radius-hero);padding:32px 20px}
.module-empty__icon{width:44px;height:44px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:rgba(45,225,194,.12);border:1px solid rgba(45,225,194,.28);color:var(--brand-primary);font-size:20px}
.module-empty__title{font-size:16px;font-weight:600;color:var(--text-hi)}
.module-empty__desc{font-size:13px;color:var(--text-low)}

/* ---------- back ---------- */
.post-back{max-width:860px;margin:44px auto 0;padding:0 16px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap}
@media (min-width:768px){.post-back{padding:0 24px}}

/* ---------- cta strip ---------- */
.cta-strip{margin-top:72px}
@media (min-width:1024px){.cta-strip{margin-top:96px}}
.cta-strip__inner{position:relative;overflow:hidden;border-radius:var(--radius-hero);border:1px solid var(--line-soft);background-image:linear-gradient(100deg,rgba(7,12,26,.94) 0%,rgba(7,12,26,.78) 55%,rgba(7,12,26,.92) 100%),url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;padding:34px 26px;display:flex;flex-direction:column;gap:22px;box-shadow:var(--shadow-card)}
.cta-strip__inner::before{content:"";position:absolute;top:0;left:26px;right:26px;height:1px;background:linear-gradient(90deg,rgba(45,225,194,.8),rgba(45,225,194,0))}
.cta-strip__title{font-size:clamp(20px,2.8vw,27px);font-weight:700;color:var(--text-hi);line-height:1.35}
.cta-strip__desc{margin-top:10px;font-size:15px;color:var(--text-mid);max-width:600px}
.cta-strip__actions{display:flex;flex-wrap:wrap;gap:14px}
@media (min-width:1024px){
  .cta-strip__inner{flex-direction:row;align-items:center;justify-content:space-between;padding:42px 40px}
  .cta-strip__actions{flex:0 0 auto}
}

/* ---------- footer ---------- */
.site-foot{position:relative;margin-top:88px;padding:56px 0 26px;border-top:1px solid var(--line-soft);background:linear-gradient(180deg,rgba(12,20,40,.65),rgba(7,12,26,1))}
.site-foot::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,rgba(45,225,194,.9),rgba(45,225,194,0))}
.foot-grid{display:grid;gap:34px 24px;grid-template-columns:repeat(2,1fr)}
@media (min-width:1024px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.foot-col p{font-size:14px;line-height:1.8;color:var(--text-low);margin-top:6px}
.foot-col h4{font-size:15px;font-weight:600;color:var(--text-hi);margin-bottom:16px}
.foot-col ul{list-style:none;display:grid;gap:11px}
.foot-col ul li{font-size:14px;color:var(--text-low)}
.foot-col ul a{font-size:14px;color:var(--text-mid)}
.foot-col ul a:hover{color:var(--brand-primary)}
.site-foot .logo{margin-bottom:16px}
.foot-bottom{margin-top:38px;padding-top:20px;border-top:1px solid var(--line-soft);display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;font-size:13px;color:var(--text-low)}

::selection{background:rgba(45,225,194,.3);color:#fff}
:focus-visible{outline:2px solid var(--brand-primary);outline-offset:2px}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* roulang page: category2 */
:root{
  --bg-deep:#070C1A;
  --bg-layer:#0C1428;
  --bg-panel:rgba(255,255,255,.06);
  --bg-panel-soft:rgba(255,255,255,.04);
  --line-soft:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.16);
  --brand-primary:#2DE1C2;
  --brand-primary-deep:#12A88E;
  --brand-accent:#FF6B4A;
  --brand-warn:#FFC94D;
  --text-hi:#EAF2FF;
  --text-mid:#A7B6D0;
  --text-low:#6E7E9C;
  --r-card:20px;
  --r-hero:24px;
  --r-field:14px;
  --r-pill:999px;
  --r-badge:8px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset, 0 18px 40px rgba(0,0,0,.45);
  --shadow-card-hover:0 24px 56px rgba(0,0,0,.55);
  --glow-brand:0 0 0 1px rgba(45,225,194,.5), 0 10px 30px rgba(45,225,194,.28);
  --glow-accent:0 0 0 1px rgba(255,107,74,.45), 0 10px 30px rgba(255,107,74,.30);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text-mid);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Source Han Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-primary);text-decoration:none;text-underline-offset:2px;transition:color .2s var(--ease)}
a:hover{color:#5bf0d6}
h1,h2,h3,h4{margin:0;color:var(--text-hi);font-weight:800;line-height:1.28;letter-spacing:0}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea{font-family:inherit;font-size:15px;color:var(--text-hi);width:100%}
:focus-visible{outline:2px solid var(--brand-primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(45,225,194,.28);color:#fff}
.mono{font-variant-numeric:tabular-nums;letter-spacing:.02em}
.no-bar{scrollbar-width:none;-ms-overflow-style:none}
.no-bar::-webkit-scrollbar{display:none}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 16px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1280px){.container{padding:0 32px}}

.section{padding:56px 0}
@media (min-width:768px){.section{padding:72px 0}}
@media (min-width:1024px){.section{padding:96px 0}}
.section--layer{background:var(--bg-layer)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.sec-title{font-size:clamp(22px,2.6vw,29px);font-weight:700;display:flex;align-items:center;gap:12px}
.sec-title::before{content:"";width:4px;height:22px;border-radius:2px;background:linear-gradient(180deg,var(--brand-primary),var(--brand-primary-deep));flex:none}
.sec-desc{font-size:15px;color:var(--text-low);max-width:620px;margin-top:10px}

/* ---------- header / nav ---------- */
.site-head{position:sticky;top:0;z-index:60;background:transparent;transition:background .3s var(--ease),backdrop-filter .3s var(--ease),border-color .3s var(--ease);border-bottom:1px solid transparent}
.site-head.is-scrolled{background:rgba(7,12,26,.82);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom-color:rgba(255,255,255,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;height:68px}
@media (min-width:1024px){.nav{height:76px}}
.logo{display:inline-flex;align-items:center;gap:10px;color:inherit}
.logo:hover{color:inherit}
.logo__mark{width:30px;height:30px;border-radius:10px;background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-deep));display:grid;place-items:center;flex:none;box-shadow:0 6px 18px rgba(45,225,194,.28)}
.logo__mark span{width:12px;height:12px;border-radius:3px;background:#06121f;transform:rotate(45deg)}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__main{font-size:17px;font-weight:800;color:var(--text-hi);letter-spacing:.02em}
.logo__sub{font-size:11px;color:var(--text-low);letter-spacing:.14em}
.nav__pill{display:none;align-items:center;gap:4px;padding:5px;border-radius:var(--r-pill);background:rgba(255,255,255,.05);border:1px solid var(--line-soft)}
.nav__link{position:relative;font-size:15px;font-weight:500;color:var(--text-mid);padding:8px 14px;border-radius:var(--r-pill);white-space:nowrap;transition:color .2s var(--ease),background .2s var(--ease)}
.nav__link:hover{color:var(--text-hi);background:rgba(255,255,255,.06)}
.nav__link.is-active{color:#06121f;background:var(--brand-primary);font-weight:700}
.nav__cta{display:none}
.nav__burger{width:44px;height:44px;border-radius:12px;border:1px solid var(--line-soft);background:rgba(255,255,255,.05);display:grid;place-items:center;position:relative;flex:none}
.nav__burger span,.nav__burger span::before,.nav__burger span::after{content:"";display:block;width:18px;height:2px;border-radius:2px;background:var(--text-hi);transition:transform .25s var(--ease),opacity .2s var(--ease)}
.nav__burger span::before{transform:translateY(-6px)}
.nav__burger span::after{transform:translateY(4px)}
.nav__burger.is-open span{background:transparent}
.nav__burger.is-open span::before{transform:rotate(45deg)}
.nav__burger.is-open span::after{transform:rotate(-45deg) translateY(-2px)}
@media (min-width:1024px){
  .nav__pill{display:flex}
  .nav__cta{display:inline-flex}
  .nav__burger{display:none}
}
/* mobile drawer */
.drawer{position:fixed;inset:0;z-index:70;pointer-events:none}
.drawer__mask{position:absolute;inset:0;background:rgba(4,8,18,.72);backdrop-filter:blur(6px);opacity:0;transition:opacity .28s var(--ease)}
.drawer__panel{position:absolute;top:0;right:0;height:100%;width:min(320px,86vw);background:linear-gradient(180deg,#0C1428,#070C1A);border-left:1px solid var(--line-soft);padding:22px 20px 28px;display:flex;flex-direction:column;gap:6px;transform:translateX(100%);transition:transform .32s var(--ease)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer__close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line-soft);background:rgba(255,255,255,.05);color:var(--text-hi);font-size:18px;display:grid;place-items:center}
.drawer__link{display:block;padding:13px 14px;border-radius:14px;font-size:15px;color:var(--text-mid);border:1px solid transparent;opacity:0;transform:translateX(12px);transition:all .3s var(--ease)}
.drawer__link:hover{color:var(--text-hi);background:rgba(255,255,255,.05);border-color:var(--line-soft)}
.drawer__link.is-active{color:var(--brand-primary);background:rgba(45,225,194,.10);border-color:rgba(45,225,194,.28);font-weight:700}
.drawer.is-open{pointer-events:auto}
.drawer.is-open .drawer__mask{opacity:1}
.drawer.is-open .drawer__panel{transform:translateX(0)}
.drawer.is-open .drawer__link{opacity:1;transform:translateX(0)}
.drawer.is-open .drawer__link:nth-child(1){transition-delay:.05s}
.drawer.is-open .drawer__link:nth-child(2){transition-delay:.09s}
.drawer.is-open .drawer__link:nth-child(3){transition-delay:.13s}
.drawer.is-open .drawer__link:nth-child(4){transition-delay:.17s}
.drawer.is-open .drawer__link:nth-child(5){transition-delay:.21s}
.drawer__foot{margin-top:auto;padding-top:18px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:700;padding:13px 26px;border-radius:var(--r-pill);border:1px solid transparent;transition:transform .16s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease),background .2s var(--ease),color .2s var(--ease);white-space:nowrap}
.btn--sm{padding:10px 18px;font-size:14px}
.btn--primary{background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-deep));color:#04121a;box-shadow:var(--glow-brand)}
.btn--primary:hover{color:#04121a;filter:brightness(1.08);transform:translateY(-2px)}
.btn--primary:active{transform:translateY(0);box-shadow:inset 0 2px 8px rgba(0,0,0,.35)}
.btn--accent{background:linear-gradient(135deg,#FF8A63,var(--brand-accent));color:#200905;box-shadow:var(--glow-accent)}
.btn--accent:hover{color:#200905;filter:brightness(1.08);transform:translateY(-2px)}
.btn--ghost{background:rgba(255,255,255,.05);border-color:var(--line-strong);color:var(--text-hi);backdrop-filter:blur(12px)}
.btn--ghost:hover{color:var(--text-hi);background:rgba(255,255,255,.09);transform:translateY(-2px)}
.btn--wide{width:100%}
@media (min-width:640px){.btn--wide{width:auto}}

/* ---------- glass ---------- */
.glass{position:relative;background:var(--bg-panel);border:1px solid var(--line-soft);border-radius:var(--r-card);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:var(--shadow-card);overflow:hidden}
.glass::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,rgba(45,225,194,.7),rgba(255,255,255,0) 70%);pointer-events:none}
.glass--soft{background:var(--bg-panel-soft);box-shadow:none}

/* ---------- badges / chips ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;padding:4px 10px;border-radius:var(--r-badge);background:rgba(45,225,194,.12);color:var(--brand-primary);border:1px solid rgba(45,225,194,.25);white-space:nowrap}
.badge--warn{background:rgba(255,201,77,.12);color:var(--brand-warn);border-color:rgba(255,201,77,.3)}
.badge--accent{background:rgba(255,107,74,.14);color:#FF9C82;border-color:rgba(255,107,74,.3)}
.chip{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--text-mid);padding:7px 14px;border-radius:var(--r-pill);background:rgba(255,255,255,.05);border:1px solid var(--line-soft)}
.chip b{color:var(--brand-primary);font-variant-numeric:tabular-nums;font-weight:800}

/* ---------- page header ---------- */
.page-head{position:relative;overflow:hidden;border-bottom:1px solid var(--line-soft)}
.page-head__bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.42}
.page-head__veil{position:absolute;inset:0;background:linear-gradient(90deg,var(--bg-deep) 8%,rgba(7,12,26,.82) 48%,rgba(7,12,26,.42) 100%)}
.page-head__inner{position:relative;padding:52px 0 46px}
@media (min-width:768px){.page-head__inner{padding:66px 0 58px}}
.crumb{font-size:13px;color:var(--text-low);margin-bottom:16px;display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb a{color:var(--text-low)}
.crumb a:hover{color:var(--brand-primary)}
.crumb span.sep{color:rgba(255,255,255,.28)}
.page-head h1{font-size:clamp(28px,4.2vw,44px);line-height:1.24;max-width:880px}
.page-head h1 em{font-style:normal;color:var(--brand-primary)}
.page-head__lead{margin-top:16px;font-size:16px;color:var(--text-mid);max-width:660px}
@media (min-width:768px){.page-head__lead{font-size:17px}}
.page-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.stat-pill{display:inline-flex;align-items:baseline;gap:8px;padding:10px 16px;border-radius:var(--r-pill);background:rgba(255,255,255,.06);border:1px solid var(--line-soft);backdrop-filter:blur(14px)}
.stat-pill b{font-size:19px;font-weight:800;color:var(--brand-primary);font-variant-numeric:tabular-nums}
.stat-pill span{font-size:13px;color:var(--text-mid)}

/* ---------- split 5:7 ---------- */
.split{display:grid;grid-template-columns:1fr;gap:28px}
@media (min-width:1024px){.split{grid-template-columns:5fr 7fr;gap:36px;align-items:start}}
.prose h2{font-size:clamp(21px,2.3vw,26px);margin:0 0 14px;display:flex;align-items:center;gap:11px}
.prose h2::before{content:"";width:4px;height:20px;border-radius:2px;background:var(--brand-primary);flex:none}
.prose h3{font-size:17px;font-weight:600;margin:26px 0 10px}
.prose p{color:var(--text-mid)}
.tick-list li{position:relative;padding:11px 0 11px 30px;border-bottom:1px dashed rgba(255,255,255,.09);font-size:15px;color:var(--text-mid)}
.tick-list li:last-child{border-bottom:0}
.tick-list li::before{content:"";position:absolute;left:6px;top:19px;width:8px;height:8px;border-radius:50%;background:var(--brand-primary);box-shadow:0 0 0 4px rgba(45,225,194,.14)}
.tick-list li b{color:var(--text-hi);font-weight:600}
.tip-box{margin-top:22px;padding:16px 18px;border-radius:var(--r-card);background:rgba(255,107,74,.08);border:1px solid rgba(255,107,74,.24);font-size:14px;color:#FFC0AE}
.tip-box b{color:#FF9C82}

/* ---------- side cards (纵向双列) ---------- */
.side-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:520px){.side-grid{grid-template-columns:1fr 1fr}}
.mini-card{padding:18px;border-radius:var(--r-card);background:var(--bg-panel);border:1px solid var(--line-soft);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease)}
.mini-card:hover{transform:translateY(-4px);border-color:rgba(45,225,194,.35);box-shadow:var(--shadow-card-hover);background:rgba(255,255,255,.08)}
.mini-card h3{font-size:17px;font-weight:600;margin:12px 0 8px}
.mini-card p{font-size:14px;color:var(--text-low);margin:0}
.mini-card__meta{margin-top:14px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-low);font-variant-numeric:tabular-nums}
.mini-card__icon{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:rgba(45,225,194,.12);border:1px solid rgba(45,225,194,.26);color:var(--brand-primary);font-weight:800;font-size:14px;font-variant-numeric:tabular-nums}

/* ---------- route steps ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:14px;position:relative}
@media (min-width:768px){.steps{grid-template-columns:repeat(4,1fr);gap:18px}}
.step{position:relative;padding:22px 20px;border-radius:var(--r-card);background:var(--bg-panel);border:1px solid var(--line-soft);transition:transform .24s var(--ease),border-color .24s var(--ease)}
.step:hover{transform:translateY(-4px);border-color:rgba(45,225,194,.32)}
.step__no{font-size:12px;font-weight:800;color:var(--brand-primary);letter-spacing:.16em;font-variant-numeric:tabular-nums}
.step h3{font-size:17px;font-weight:600;margin:10px 0 8px}
.step p{font-size:14px;color:var(--text-low);margin:0}
.step__line{position:absolute;top:50%;right:-18px;width:18px;height:2px;background:linear-gradient(90deg,rgba(45,225,194,.6),rgba(45,225,194,0));display:none}
@media (min-width:768px){.step:not(:last-child) .step__line{display:block}}
.progress{height:6px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;margin-top:26px}
.progress i{display:block;height:100%;width:72%;border-radius:999px;background:linear-gradient(90deg,var(--brand-primary-deep),var(--brand-primary))}

/* ---------- content cards ---------- */
.card-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.card{display:flex;flex-direction:column;background:var(--bg-panel);border:1px solid var(--line-soft);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.card:hover{transform:translateY(-4px);border-color:rgba(45,225,194,.35);box-shadow:var(--shadow-card-hover)}
.card__cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:#0A1122}
.card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card__cover img{transform:scale(1.04)}
.card__cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,26,0) 40%,rgba(7,12,26,.78))}
.card__tag{position:absolute;top:12px;left:12px;z-index:2}
.card__body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card__body h3{font-size:18px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card__body p{font-size:14px;color:var(--text-low);margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card__foot{margin-top:auto;padding-top:14px;border-top:1px solid rgba(255,255,255,.08);display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-low);font-variant-numeric:tabular-nums}
.card__foot a{font-size:13px;font-weight:600}

/* ---------- compare ---------- */
.compare{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:768px){.compare{grid-template-columns:1fr 1fr}}
.compare__col{padding:22px;border-radius:var(--r-card);border:1px solid var(--line-soft);background:var(--bg-panel)}
.compare__col.is-key{border-color:rgba(45,225,194,.35);background:linear-gradient(180deg,rgba(45,225,194,.08),rgba(255,255,255,.03))}
.compare__col h3{font-size:18px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.compare__col li{font-size:14.5px;color:var(--text-mid);padding:9px 0 9px 22px;position:relative;border-bottom:1px dashed rgba(255,255,255,.08)}
.compare__col li:last-child{border-bottom:0}
.compare__col li::before{content:"";position:absolute;left:4px;top:17px;width:7px;height:7px;border-radius:2px;background:var(--text-low);transform:rotate(45deg)}
.compare__col.is-key li::before{background:var(--brand-primary)}

/* ---------- faq ---------- */
.faq{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-soft);background:var(--bg-panel)}
.faq details{border-bottom:1px solid rgba(255,255,255,.08)}
.faq details:last-child{border-bottom:0}
.faq summary{list-style:none;cursor:pointer;padding:18px 20px;font-size:16px;font-weight:600;color:var(--text-hi);display:flex;align-items:center;justify-content:space-between;gap:16px;transition:background .2s var(--ease)}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{background:rgba(255,255,255,.04)}
.faq summary::after{content:"+";font-size:20px;font-weight:400;color:var(--brand-primary);transition:transform .22s var(--ease);flex:none}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details[open] summary{box-shadow:inset 3px 0 0 var(--brand-primary)}
.faq .faq__a{padding:0 20px 20px;font-size:15px;color:var(--text-mid);line-height:1.8;animation:fadeIn .28s var(--ease)}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- cta bar ---------- */
.cta-bar{padding:26px 24px;border-radius:var(--r-hero);background:linear-gradient(120deg,rgba(45,225,194,.12),rgba(255,255,255,.04) 55%,rgba(255,107,74,.10));border:1px solid var(--line-soft);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;position:relative;overflow:hidden}
.cta-bar::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--brand-primary),rgba(255,255,255,0))}
.cta-bar h2{font-size:clamp(19px,2.2vw,23px);font-weight:700}
.cta-bar p{margin:8px 0 0;font-size:14.5px;color:var(--text-mid)}
.cta-bar__actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- pulse glow ---------- */
.hero-glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.4;pointer-events:none}
.hero-glow--a{width:420px;height:420px;background:rgba(45,225,194,.35);top:-120px;right:-60px;animation:breathe 14s ease-in-out infinite}
.hero-glow--b{width:320px;height:320px;background:rgba(255,107,74,.22);bottom:-140px;left:-80px;animation:breathe 18s ease-in-out infinite reverse}
@keyframes breathe{0%,100%{transform:scale(1);opacity:.32}50%{transform:scale(1.14);opacity:.5}}

/* ---------- footer ---------- */
.site-foot{margin-top:20px;background:var(--bg-layer);border-top:1px solid var(--line-soft);position:relative}
.site-foot::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--brand-primary),rgba(45,225,194,0) 65%)}
.foot-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 36px}
@media (min-width:1024px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding:64px 0 44px}}
.foot-col p{font-size:14px;color:var(--text-low);margin:0 0 10px}
.foot-col h4{font-size:15px;font-weight:700;color:var(--text-hi);margin-bottom:16px}
.foot-col ul li{margin-bottom:11px;font-size:14px;color:var(--text-low)}
.foot-col ul li a{color:var(--text-mid);font-size:14px}
.foot-col ul li a:hover{color:var(--brand-primary)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0 28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-low)}

/* ---------- form ---------- */
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-mid);margin-bottom:8px}
.field input,.field textarea{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-field);padding:12px 14px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.field input::placeholder,.field textarea::placeholder{color:var(--text-low)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand-primary);box-shadow:0 0 0 3px rgba(45,225,194,.16)}
.field textarea{resize:vertical;min-height:104px}

@media (max-width:639px){
  body{font-size:15.5px}
  .page-head h1{font-size:26px}
}

/* roulang page: category3 */
:root{
  --bg-deep:#070C1A;
  --bg-layer:#0C1428;
  --bg-panel:rgba(255,255,255,.06);
  --bg-panel-soft:rgba(255,255,255,.04);
  --line-soft:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.16);
  --brand-primary:#2DE1C2;
  --brand-primary-deep:#12A88E;
  --brand-accent:#FF6B4A;
  --brand-warn:#FFC94D;
  --text-hi:#EAF2FF;
  --text-mid:#A7B6D0;
  --text-low:#6E7E9C;
  --radius-card:20px;
  --radius-hero:24px;
  --radius-btn:999px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset, 0 18px 40px rgba(0,0,0,.45);
  --shadow-card-hover:0 24px 56px rgba(0,0,0,.55), 0 0 0 1px rgba(45,225,194,.35);
  --glow-primary:0 0 0 1px rgba(45,225,194,.5), 0 10px 30px rgba(45,225,194,.28);
  --container-max:1240px;
  --font-sans:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Source Han Sans SC',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body.site-body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text-mid);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.site-body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 620px at 10% -6%, rgba(45,225,194,.10), transparent 62%),
    radial-gradient(760px 520px at 94% 6%, rgba(255,107,74,.07), transparent 64%);
}
img{max-width:100%;display:block}
a{color:var(--brand-primary);text-decoration:none;text-underline-offset:2px}
button,input,textarea{font-family:inherit;font-size:inherit}
.mono{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 16px;position:relative}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1280px){.container{padding:0 32px}}

/* ---------- 顶部导航 ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(7,12,26,.74);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:background .3s ease,border-color .3s ease;
}
.site-head.is-scrolled{background:rgba(7,12,26,.93);border-bottom-color:rgba(255,255,255,.11)}
.nav{display:flex;align-items:center;gap:18px;min-height:68px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.logo__mark{
  width:34px;height:34px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-deep));
  display:grid;place-items:center;
  box-shadow:0 8px 22px rgba(45,225,194,.28);
}
.logo__mark span{width:12px;height:12px;border:2px solid #06231D;border-radius:3px;transform:rotate(45deg);display:block}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__main{font-size:17px;font-weight:800;color:var(--text-hi);letter-spacing:.02em}
.logo__sub{font-size:11px;font-weight:600;color:var(--brand-primary);letter-spacing:.14em}
.nav__pill{
  display:none;align-items:center;gap:2px;margin-left:auto;
  padding:5px;border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-soft);
}
.nav__link{
  position:relative;display:inline-block;padding:8px 13px;border-radius:999px;
  font-size:14.5px;font-weight:500;color:var(--text-mid);text-decoration:none;
  white-space:nowrap;transition:color .2s ease,background .2s ease;
}
.nav__link:hover{color:var(--text-hi);background:rgba(255,255,255,.07)}
.nav__link.is-active{
  color:#04140F;font-weight:700;
  background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-deep));
}
.nav__cta{display:none}
.nav__burger{
  display:grid;place-items:center;width:44px;height:44px;margin-left:auto;
  border:1px solid var(--line-soft);border-radius:14px;
  background:rgba(255,255,255,.05);cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.nav__burger:hover{background:rgba(255,255,255,.09);border-color:rgba(45,225,194,.4)}
.nav__burger span{position:relative;width:18px;height:2px;background:var(--text-hi);border-radius:2px;transition:background .2s ease}
.nav__burger span::before,.nav__burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-hi);border-radius:2px;
  transition:transform .25s ease,top .25s ease;
}
.nav__burger span::before{top:-6px}
.nav__burger span::after{top:6px}
.nav__burger[aria-expanded="true"] span{background:transparent}
.nav__burger[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav__burger[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}
@media (min-width:1024px){
  .nav__pill{display:flex}
  .nav__burger{display:none}
}
@media (min-width:1180px){
  .nav__cta{display:inline-flex}
}

/* ---------- 移动抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:80;pointer-events:none}
.drawer__mask{
  position:absolute;inset:0;background:rgba(4,8,18,.74);
  backdrop-filter:blur(6px);opacity:0;transition:opacity .3s ease;
}
.drawer__panel{
  position:absolute;top:0;right:0;height:100%;width:min(86vw,340px);
  padding:22px 20px 32px;
  background:linear-gradient(180deg,#0B1324,#070C1A);
  border-left:1px solid var(--line-soft);
  display:flex;flex-direction:column;gap:6px;
  overflow-y:auto;
  transform:translateX(100%);
  transition:transform .34s cubic-bezier(.22,.61,.36,1);
}
.drawer.is-open{pointer-events:auto}
.drawer.is-open .drawer__mask{opacity:1}
.drawer.is-open .drawer__panel{transform:translateX(0)}
.drawer__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer__title{font-size:15px;font-weight:700;color:var(--text-hi)}
.drawer__close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line-soft);
  background:rgba(255,255,255,.05);color:var(--text-mid);cursor:pointer;font-size:16px;
  transition:color .2s ease,border-color .2s ease;
}
.drawer__close:hover{color:var(--brand-primary);border-color:rgba(45,225,194,.45)}
.drawer__link{
  display:block;padding:13px 14px;border-radius:14px;
  font-size:16px;color:var(--text-mid);text-decoration:none;
  transition:background .2s ease,color .2s ease;
}
.drawer__link:hover{background:rgba(255,255,255,.06);color:var(--text-hi)}
.drawer__link.is-active{background:rgba(45,225,194,.14);color:var(--brand-primary);font-weight:600}
.drawer__foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line-soft)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;line-height:1;white-space:nowrap;
  text-decoration:none;border:1px solid transparent;cursor:pointer;
  transition:transform .18s cubic-bezier(.22,.61,.36,1),box-shadow .18s ease,filter .18s ease,background .18s ease,border-color .18s ease;
}
.btn--primary{
  background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-deep));
  color:#04140F;box-shadow:var(--glow-primary);
}
.btn--primary:hover{filter:brightness(1.08);transform:translateY(-2px)}
.btn--primary:active{transform:translateY(0);box-shadow:inset 0 3px 10px rgba(0,0,0,.28)}
.btn--accent{
  background:linear-gradient(135deg,#FF8A6B,var(--brand-accent));
  color:#2A0C04;
  box-shadow:0 0 0 1px rgba(255,107,74,.5), 0 10px 30px rgba(255,107,74,.35);
}
.btn--accent:hover{filter:brightness(1.07);transform:translateY(-2px)}
.btn--ghost{
  background:rgba(255,255,255,.05);border-color:var(--line-strong);color:var(--text-hi);
}
.btn--ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(45,225,194,.45);transform:translateY(-2px)}
.btn--sm{padding:10px 18px;font-size:14px}
.btn--block{width:100%}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand-primary);outline-offset:2px;
}

/* ---------- 分类页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line-soft);
  background:var(--bg-layer);
}
.page-hero__media{position:absolute;inset:0}
.page-hero__media img{width:100%;height:100%;object-fit:cover;opacity:.4}
.page-hero__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,#070C1A 3%,rgba(7,12,26,.86) 48%,rgba(7,12,26,.42) 100%);
}
.page-hero__inner{
  position:relative;z-index:2;
  display:flex;flex-direction:column;justify-content:center;gap:14px;
  padding:40px 0 44px;min-height:252px;
}
@media (min-width:768px){.page-hero__inner{padding:56px 0 60px;min-height:290px}}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-low)}
.crumb a{color:var(--text-low);text-decoration:none;transition:color .2s ease}
.crumb a:hover{color:var(--brand-primary)}
.crumb__sep{opacity:.55}
.crumb__now{color:var(--text-mid)}
.page-title{
  margin:0;letter-spacing:0;
  font-size:clamp(26px,4.4vw,44px);font-weight:800;line-height:1.24;color:var(--text-hi);
}
.page-sub{margin:0;max-width:660px;font-size:clamp(15px,1.5vw,18px);color:var(--text-mid);line-height:1.75}
.stat-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.stat-pill{
  display:inline-flex;align-items:baseline;gap:8px;
  padding:8px 16px;border-radius:999px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--line-soft);
  backdrop-filter:blur(12px);
  font-size:13px;color:var(--text-mid);
}
.stat-pill b{font-size:18px;font-weight:800;color:var(--brand-primary);font-variant-numeric:tabular-nums}

/* ---------- 板块 ---------- */
.section{padding:56px 0;position:relative;z-index:1}
@media (min-width:1024px){.section{padding:92px 0}}
.section--alt{
  background:var(--bg-layer);
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);
}
.section__head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:30px}
.h2{
  position:relative;margin:0;padding-left:16px;
  font-size:clamp(21px,2.6vw,29px);font-weight:700;line-height:1.35;color:var(--text-hi);
}
.h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--brand-primary),var(--brand-primary-deep));
}
.sec-desc{margin:10px 0 0;padding-left:16px;max-width:780px;font-size:15px;line-height:1.85;color:var(--text-low)}

/* ---------- 卡片 ---------- */
.card{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--radius-card);
  background:var(--bg-panel);
  border:1px solid var(--line-soft);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(18px);
  transition:transform .24s cubic-bezier(.22,.61,.36,1),box-shadow .24s ease,border-color .24s ease;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);
  opacity:.55;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:rgba(45,225,194,.35)}
.card__media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#0A1020}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s cubic-bezier(.22,.61,.36,1)}
.card:hover .card__media img{transform:scale(1.04)}
.card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card__title{margin:0;font-size:17px;font-weight:600;line-height:1.5;color:var(--text-hi)}
.card__desc{margin:0;font-size:14px;line-height:1.8;color:var(--text-mid)}
.card__meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:auto;padding-top:6px;font-size:13px;color:var(--text-low)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:8px;
  font-size:12px;font-weight:600;
  background:rgba(45,225,194,.12);color:var(--brand-primary);
  border:1px solid rgba(45,225,194,.28);
}
.badge--warn{background:rgba(255,201,77,.14);color:var(--brand-warn);border-color:rgba(255,201,77,.32)}
.badge--accent{background:rgba(255,107,74,.14);color:#FF9A80;border-color:rgba(255,107,74,.32)}

/* ---------- 安装前确认 ---------- */
.req-grid{display:grid;gap:18px;grid-template-columns:1fr}
@media (min-width:768px){.req-grid{grid-template-columns:repeat(3,1fr)}}
.req{
  padding:22px;border-radius:var(--radius-card);
  background:var(--bg-panel);border:1px solid var(--line-soft);
  backdrop-filter:blur(18px);
  transition:transform .24s cubic-bezier(.22,.61,.36,1),border-color .24s ease;
}
.req:hover{transform:translateY(-3px);border-color:rgba(45,225,194,.35)}
.req__num{display:block;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--brand-primary);font-variant-numeric:tabular-nums}
.req h3{margin:12px 0 8px;font-size:17px;font-weight:600;color:var(--text-hi)}
.req p{margin:0;font-size:14.5px;line-height:1.85;color:var(--text-mid)}

/* ---------- 设备适配 ---------- */
.platform-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:640px){.platform-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.platform-grid{grid-template-columns:repeat(4,1fr)}}
.platform{
  display:flex;flex-direction:column;gap:10px;
  padding:20px;border-radius:18px;
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line-soft);
  transition:transform .24s cubic-bezier(.22,.61,.36,1),border-color .24s ease;
}
.platform:hover{transform:translateY(-3px);border-color:rgba(45,225,194,.35)}
.platform__name{margin:0;font-size:16px;font-weight:700;color:var(--text-hi)}
.platform__pkg{font-size:12.5px;font-weight:600;letter-spacing:.04em;color:var(--brand-primary)}
.platform p{margin:0;font-size:13.5px;line-height:1.8;color:var(--text-mid)}

/* ---------- 流程时间轴 ---------- */
.steps{position:relative;margin:0;padding:0 0 0 26px;list-style:none}
.steps::before{
  content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--brand-primary),rgba(45,225,194,.08));
}
.step{position:relative;padding:0 0 26px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-26px;top:6px;width:16px;height:16px;border-radius:50%;
  background:#08121F;border:2px solid var(--brand-primary);
  box-shadow:0 0 0 4px rgba(45,225,194,.12);
}
.step__time{display:inline-block;margin-bottom:6px;font-size:12.5px;font-weight:600;letter-spacing:.04em;color:var(--brand-primary);font-variant-numeric:tabular-nums}
.step h3{margin:0 0 6px;font-size:17px;font-weight:600;color:var(--text-hi)}
.step p{margin:0;font-size:14.5px;line-height:1.85;color:var(--text-mid)}
.side-note{
  padding:24px;border-radius:var(--radius-card);
  background:var(--bg-panel);border:1px solid var(--line-soft);
  box-shadow:var(--shadow-card);backdrop-filter:blur(18px);
}
@media (min-width:1024px){.side-note{position:sticky;top:96px}}
.side-note h3{margin:0 0 16px;font-size:17px;font-weight:700;color:var(--text-hi)}
.side-note ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.side-note li{position:relative;padding-left:14px;font-size:14px;line-height:1.75;color:var(--text-mid)}
.side-note li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--brand-primary)}
.side-note li b{display:block;margin-bottom:2px;font-size:14.5px;font-weight:600;color:var(--text-hi)}
.side-note__tip{margin:18px 0 0;padding-top:16px;border-top:1px solid var(--line-soft);font-size:13.5px;line-height:1.8;color:var(--text-low)}

/* ---------- 自查清单 ---------- */
.checklist{display:grid;gap:12px;grid-template-columns:1fr;margin:0;padding:0;list-style:none}
@media (min-width:768px){.checklist{grid-template-columns:repeat(2,1fr)}}
.checklist li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 16px;border-radius:14px;
  background:var(--bg-panel-soft);border:1px solid var(--line-soft);
  font-size:14.5px;line-height:1.75;color:var(--text-mid);
  transition:border-color .24s ease,background .24s ease;
}
.checklist li:hover{border-color:rgba(45,225,194,.35);background:rgba(255,255,255,.06)}
.checklist li::before{
  content:"✓";flex:0 0 auto;display:grid;place-items:center;
  width:20px;height:20px;margin-top:3px;border-radius:6px;
  background:rgba(45,225,194,.16);border:1px solid rgba(45,225,194,.35);
  color:var(--brand-primary);font-size:12px;font-weight:700;
}

/* ---------- FAQ ---------- */
.faq{
  border-radius:var(--radius-card);
  border:1px solid var(--line-soft);
  background:var(--bg-panel);
  backdrop-filter:blur(18px);
  overflow:hidden;
}
.faq details{border-bottom:1px solid var(--line-soft)}
.faq details:last-child{border-bottom:none}
.faq summary{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:16.5px;font-weight:600;line-height:1.6;color:var(--text-hi);
  cursor:pointer;list-style:none;transition:color .2s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";flex:0 0 auto;display:grid;place-items:center;
  width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line-strong);color:var(--brand-primary);font-size:16px;line-height:1;
  transition:transform .25s ease,background .25s ease;
}
.faq details[open] summary{color:var(--brand-primary)}
.faq details[open] summary::after{content:"−";transform:rotate(180deg);background:rgba(45,225,194,.14)}
.faq__a{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text-mid);animation:fadeUp .3s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- CTA 条 ---------- */
.cta-bar{
  position:relative;overflow:hidden;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  padding:28px;border-radius:var(--radius-hero);
  border:1px solid var(--line-soft);
  background:linear-gradient(135deg,rgba(45,225,194,.12),rgba(255,255,255,.03) 44%,rgba(255,107,74,.12));
  backdrop-filter:blur(18px);
}
.cta-bar__title{margin:0;font-size:clamp(19px,2.4vw,24px);font-weight:700;color:var(--text-hi)}
.cta-bar__desc{margin:8px 0 0;font-size:14.5px;line-height:1.8;color:var(--text-mid);max-width:620px}
.cta-bar__actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-foot{
  position:relative;z-index:1;
  padding:56px 0 24px;
  border-top:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(12,20,40,.92),rgba(7,12,26,1));
}
.site-foot::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,225,194,.7),transparent);
}
.foot-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:640px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.foot-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
.foot-col h4{margin:0 0 14px;font-size:15px;font-weight:700;color:var(--text-hi)}
.foot-col p{margin:0 0 10px;font-size:14px;line-height:1.8;color:var(--text-mid)}
.foot-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.foot-col a{font-size:14px;color:var(--text-mid);text-decoration:none;transition:color .2s ease}
.foot-col a:hover{color:var(--brand-primary)}
.foot-bottom{
  margin-top:36px;padding-top:20px;
  border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-low);
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --bg-deep:#070C1A;
  --bg-layer:#0C1428;
  --bg-panel:rgba(255,255,255,.06);
  --bg-panel-soft:rgba(255,255,255,.04);
  --line-soft:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.16);
  --brand-primary:#2DE1C2;
  --brand-primary-deep:#12A88E;
  --brand-accent:#FF6B4A;
  --brand-warn:#FFC94D;
  --text-hi:#EAF2FF;
  --text-mid:#A7B6D0;
  --text-low:#6E7E9C;
  --radius-card:20px;
  --radius-hero:24px;
  --radius-input:14px;
  --radius-badge:8px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset, 0 18px 40px rgba(0,0,0,.45);
  --shadow-card-hover:0 24px 56px rgba(0,0,0,.55), 0 0 0 1px rgba(45,225,194,.35);
  --glow-primary:0 0 0 1px rgba(45,225,194,.5), 0 10px 30px rgba(45,225,194,.28);
  --glow-accent:0 0 0 1px rgba(255,107,74,.45), 0 10px 30px rgba(255,107,74,.35);
  --maxw:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html body{
  margin:0;
  padding:0;
  background:var(--bg-deep);
  color:var(--text-mid);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Source Han Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-primary);outline-offset:2px;border-radius:6px}
.mono{font-variant-numeric:tabular-nums}

.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 16px;
}
@media (min-width:768px){ .container{padding:0 24px} }
@media (min-width:1280px){ .container{padding:0 32px} }

/* ---------- header / nav ---------- */
.site-head{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,12,26,.55);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease), border-color .28s var(--ease);
}
.site-head.is-scrolled{
  background:rgba(7,12,26,.86);
  border-bottom-color:rgba(255,255,255,.08);
}
.nav{
  display:flex;
  align-items:center;
  gap:14px;
  min-height:72px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text-hi);
  flex:0 0 auto;
}
.logo__mark{
  width:30px;height:30px;flex:0 0 30px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-deep));
  display:inline-flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 6px 18px rgba(45,225,194,.28);
}
.logo__mark span{
  width:11px;height:11px;border-radius:3px;
  background:#04121A;
  box-shadow:0 0 0 2px rgba(4,18,26,.35) inset;
  transform:rotate(45deg);
}
.logo__text{display:flex;flex-direction:column;line-height:1.1}
.logo__main{font-size:16px;font-weight:800;letter-spacing:.02em;color:var(--text-hi)}
.logo__sub{font-size:11px;color:var(--text-low);letter-spacing:.04em;margin-top:2px}

.nav__pill{
  display:none;
  align-items:center;
  gap:2px;
  padding:4px;
  margin-left:auto;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-soft);
}
.nav__link{
  display:inline-block;
  padding:8px 14px;
  border-radius:999px;
  font-size:15px;
  font-weight:500;
  color:var(--text-mid);
  white-space:nowrap;
  transition:color .2s var(--ease), background .2s var(--ease);
}
.nav__link:hover{color:var(--text-hi);background:rgba(255,255,255,.07)}
.nav__link.is-active{color:var(--brand-primary);background:rgba(45,225,194,.14)}
.nav__cta{display:none}
.nav__burger{
  margin-left:auto;
  width:44px;height:44px;
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:6px;
  border-radius:12px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--line-soft);
  color:var(--text-hi);
  cursor:pointer;
  transition:background .2s var(--ease);
}
.nav__burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-hi)}
.nav__burger:hover{background:rgba(255,255,255,.12)}
@media (min-width:1024px){
  .nav__pill{display:flex;margin-left:auto}
  .nav__cta{display:inline-flex}
  .nav__burger{display:none}
}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:70;
  background:rgba(4,8,18,.68);
  backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease), visibility .25s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:80;
  width:min(320px,86vw);
  padding:20px 20px 28px;
  background:rgba(9,15,30,.96);
  border-left:1px solid var(--line-soft);
  backdrop-filter:blur(20px);
  transform:translateX(102%);
  transition:transform .3s var(--ease);
  display:flex;
  flex-direction:column;
  gap:18px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer__close{
  width:44px;height:44px;
  border-radius:12px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--line-soft);
  color:var(--text-hi);
  font-size:22px;
  line-height:1;
  cursor:pointer;
}
.drawer__nav{display:flex;flex-direction:column;gap:6px}
.drawer__nav a{
  padding:13px 14px;
  border-radius:14px;
  font-size:15px;
  color:var(--text-mid);
  background:rgba(255,255,255,.03);
  border:1px solid transparent;
  transition:all .2s var(--ease);
}
.drawer__nav a:hover{color:var(--text-hi);background:rgba(255,255,255,.08)}
.drawer__nav a.is-active{color:var(--brand-primary);border-color:rgba(45,225,194,.3);background:rgba(45,225,194,.1)}
.drawer__foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}
html body.is-locked{overflow:hidden}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  text-align:center;
  transition:transform .16s var(--ease), box-shadow .2s var(--ease), filter .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}
.btn--primary{
  background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-deep));
  color:#04121A;
  box-shadow:var(--glow-primary);
}
.btn--primary:hover{transform:translateY(-2px);filter:brightness(1.08)}
.btn--primary:active{transform:translateY(0);filter:brightness(.96)}
.btn--accent{
  background:linear-gradient(135deg,#FF7C5C,var(--brand-accent));
  color:#2A0C04;
  box-shadow:var(--glow-accent);
}
.btn--accent:hover{transform:translateY(-2px);filter:brightness(1.08)}
.btn--accent:active{transform:translateY(0)}
.btn--ghost{
  background:rgba(255,255,255,.06);
  border-color:var(--line-soft);
  color:var(--text-hi);
  backdrop-filter:blur(12px);
}
.btn--ghost:hover{transform:translateY(-2px);background:rgba(255,255,255,.11);border-color:rgba(45,225,194,.4)}
.btn--sm{padding:10px 18px;font-size:14px}
.btn--block{width:100%}

/* ---------- page head ---------- */
.page-head{
  position:relative;
  padding:44px 0 48px;
  background-image:linear-gradient(100deg, rgba(7,12,26,.97) 8%, rgba(7,12,26,.78) 52%, rgba(7,12,26,.58) 100%), url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line-soft);
  overflow:hidden;
}
.page-head::after{
  content:'';
  position:absolute;
  right:-140px;top:-120px;
  width:420px;height:420px;
  background:radial-gradient(circle, rgba(45,225,194,.22), rgba(45,225,194,0) 70%);
  animation:breathe 16s ease-in-out infinite;
  pointer-events:none;
}
@keyframes breathe{
  0%,100%{opacity:.55;transform:scale(1)}
  50%{opacity:.9;transform:scale(1.12)}
}
.page-head__inner{position:relative;z-index:2;max-width:820px}
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-low);
  margin-bottom:18px;
  flex-wrap:wrap;
}
.crumbs a{color:var(--text-low);transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--brand-primary)}
.crumbs span{color:var(--text-low)}
.page-head h1{
  font-size:clamp(28px,4.6vw,44px);
  font-weight:800;
  line-height:1.22;
  color:var(--text-hi);
  letter-spacing:0;
}
.page-head__lead{
  margin-top:16px;
  font-size:clamp(15px,1.6vw,18px);
  color:var(--text-mid);
  max-width:700px;
}
.stat-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.stat{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 16px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--line-soft);
  backdrop-filter:blur(12px);
  font-size:13px;
  color:var(--text-mid);
  font-variant-numeric:tabular-nums;
}
.stat b{color:var(--brand-primary);font-size:16px;font-weight:700}

/* ---------- sections ---------- */
.sec{padding:92px 0}
@media (max-width:767px){ .sec{padding:58px 0} }
.sec--layer{background:var(--bg-layer);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.sec-head{margin-bottom:36px;max-width:760px}
.sec-head h2{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:clamp(22px,2.6vw,29px);
  font-weight:700;
  color:var(--text-hi);
  line-height:1.35;
}
.sec-head h2::before{
  content:'';
  width:4px;height:22px;
  border-radius:2px;
  background:var(--brand-primary);
  flex:0 0 4px;
  box-shadow:0 0 14px rgba(45,225,194,.6);
}
.sec-head p{margin-top:14px;color:var(--text-mid);font-size:15.5px}
.sec-head--split{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  max-width:none;
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--brand-primary);
  transition:gap .2s var(--ease)
}
.link-more:hover{gap:10px}

/* ---------- prose / checklist ---------- */
.prose-block{color:var(--text-mid);font-size:16px;line-height:1.9}
.prose-block p+p{margin-top:16px}
.prose-block strong{color:var(--text-hi);font-weight:600}
.check-list{margin-top:26px;display:grid;gap:16px}
@media (min-width:768px){ .check-list{grid-template-columns:repeat(3,1fr)} }
.check-item{
  padding:22px 22px 24px;
  border-radius:var(--radius-card);
  background:var(--bg-panel-soft);
  border:1px solid var(--line-soft);
  backdrop-filter:blur(14px);
  transition:transform .24s var(--ease), border-color .24s var(--ease), box-shadow .24s var(--ease);
}
.check-item:hover{transform:translateY(-4px);border-color:rgba(45,225,194,.4);box-shadow:var(--shadow-card-hover)}
.check-item h3{font-size:17px;font-weight:600;color:var(--text-hi);margin-bottom:8px;display:flex;align-items:center;gap:8px}
.check-item h3::before{
  content:'';
  width:8px;height:8px;border-radius:50%;
  background:var(--brand-primary);
  box-shadow:0 0 10px rgba(45,225,194,.8);
  flex:0 0 8px;
}
.check-item p{font-size:14.5px;color:var(--text-mid);line-height:1.8}

/* ---------- cards ---------- */
.cards{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:640px){ .cards{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1024px){ .cards{grid-template-columns:repeat(3,1fr)} }
@media (min-width:1024px){ .cards--stagger > *:nth-child(3n+2){margin-top:28px} }
.card{
  position:relative;
  display:flex;
  flex-direction:column;
  border-radius:var(--radius-card);
  background:var(--bg-panel);
  border:1px solid var(--line-soft);
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
}
.card::before{
  content:'';
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg, rgba(255,255,255,0), rgba(255,255,255,.35), rgba(255,255,255,0));
  opacity:.5;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:rgba(45,225,194,.35)}
.card__thumb{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:linear-gradient(135deg,#101B33,#0A1224);
}
.card__thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .4s var(--ease);
}
.card:hover .card__thumb img{transform:scale(1.04)}
.card__thumb::after{
  content:'';
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(7,12,26,0) 40%, rgba(7,12,26,.75) 100%);
}
.card__tagline{
  position:absolute;
  left:14px;bottom:12px;
  z-index:2;
}
.card__body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card__title{
  font-size:18px;
  font-weight:600;
  line-height:1.45;
  color:var(--text-hi);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card__desc{
  font-size:14.5px;
  color:var(--text-mid);
  line-height:1.8;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card__meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-low);
  font-variant-numeric:tabular-nums;
}
.card__more{color:var(--brand-primary);font-size:13.5px;display:inline-flex;align-items:center;gap:4px}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:var(--radius-badge);
  font-size:12px;
  font-weight:500;
  background:rgba(45,225,194,.14);
  border:1px solid rgba(45,225,194,.28);
  color:var(--brand-primary);
}
.badge--warn{background:rgba(255,201,77,.12);border-color:rgba(255,201,77,.3);color:var(--brand-warn)}
.badge--ghost{background:rgba(255,255,255,.07);border-color:var(--line-soft);color:var(--text-mid)}

/* ---------- flow steps ---------- */
.flow{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:768px){ .flow{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1024px){ .flow{grid-template-columns:repeat(4,1fr)} }
.step{
  position:relative;
  padding:26px 22px 24px;
  border-radius:var(--radius-card);
  background:var(--bg-panel-soft);
  border:1px solid var(--line-soft);
  backdrop-filter:blur(14px);
  transition:transform .24s var(--ease), border-color .24s var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:rgba(45,225,194,.35)}
.step__no{
  font-size:13px;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--brand-primary);
  font-variant-numeric:tabular-nums;
}
.step h3{margin-top:10px;font-size:17px;font-weight:600;color:var(--text-hi)}
.step p{margin-top:8px;font-size:14.5px;color:var(--text-mid);line-height:1.8}
.step__bar{
  margin-top:16px;
  height:4px;
  border-radius:999px;
  background:rgba(255,255,255,.08);
  overflow:hidden;
}
.step__bar i{
  display:block;height:100%;border-radius:999px;
  background:linear-gradient(90deg,var(--brand-primary),var(--brand-primary-deep));
}
.step:nth-child(1) .step__bar i{width:25%}
.step:nth-child(2) .step__bar i{width:50%}
.step:nth-child(3) .step__bar i{width:75%}
.step:nth-child(4) .step__bar i{width:100%}

/* ---------- faq ---------- */
.faq{
  border-radius:var(--radius-card);
  background:var(--bg-panel-soft);
  border:1px solid var(--line-soft);
  backdrop-filter:blur(16px);
  padding:6px 24px;
  box-shadow:var(--shadow-card);
}
.faq-item{border-top:1px solid var(--line-soft)}
.faq-item:first-child{border-top:0}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  position:relative;
  padding:22px 40px 22px 18px;
  font-size:16.5px;
  font-weight:600;
  color:var(--text-hi);
  line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:'';
  position:absolute;
  left:0;top:26px;
  width:3px;height:16px;
  border-radius:2px;
  background:var(--brand-primary);
  opacity:0;
  transition:opacity .2s var(--ease);
}
.faq-item summary::after{
  content:'+';
  position:absolute;
  right:8px;top:50%;
  transform:translateY(-50%);
  font-size:20px;
  font-weight:400;
  color:var(--brand-primary);
  transition:transform .2s var(--ease);
}
.faq-item[open] summary{color:var(--brand-primary)}
.faq-item[open] summary::before{opacity:1}
.faq-item[open] summary::after{content:'−';transform:translateY(-50%) rotate(180deg)}
.faq-item .faq-a{
  padding:0 40px 24px 18px;
  font-size:15px;
  color:var(--text-mid);
  line-height:1.85;
  animation:fadeUp .26s var(--ease) both;
}
@keyframes fadeUp{
  from{opacity:0;transform:translateY(-6px)}
  to{opacity:1;transform:translateY(0)}
}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:26px;
  padding:38px 36px;
  border-radius:var(--radius-hero);
  border:1px solid var(--line-soft);
  background-image:linear-gradient(95deg, rgba(7,12,26,.95) 10%, rgba(7,12,26,.72) 60%, rgba(7,12,26,.55) 100%), url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.cta-band__text{max-width:620px;position:relative;z-index:2}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;color:var(--text-hi);line-height:1.4}
.cta-band p{margin-top:10px;font-size:15px;color:var(--text-mid)}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2}
@media (max-width:639px){
  .cta-band{padding:28px 20px}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn{width:100%}
}

/* ---------- footer ---------- */
.site-foot{
  margin-top:20px;
  border-top:1px solid var(--line-soft);
  background:linear-gradient(180deg, rgba(12,20,40,.9), rgba(7,12,26,1));
  position:relative;
}
.site-foot::before{
  content:'';
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg, var(--brand-primary), rgba(45,225,194,0));
}
.foot-grid{
  display:grid;
  gap:32px;
  padding:64px 0 40px;
  grid-template-columns:1fr;
}
@media (min-width:640px){ .foot-grid{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1024px){ .foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px} }
.foot-col p{font-size:14px;color:var(--text-mid);line-height:1.85;margin-bottom:10px;max-width:340px}
.foot-col h4{font-size:14px;font-weight:600;color:var(--text-hi);margin-bottom:16px;letter-spacing:.04em}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col ul li{font-size:14px;color:var(--text-mid)}
.foot-col ul li a{color:var(--text-mid);transition:color .2s var(--ease), padding-left .2s var(--ease)}
.foot-col ul li a:hover{color:var(--brand-primary);padding-left:4px}
.foot-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  align-items:center;
  justify-content:space-between;
  padding:20px 0 28px;
  border-top:1px solid var(--line-soft);
  font-size:13px;
  color:var(--text-low);
}

/* ---------- misc ---------- */
.breadcrumb-json{margin:0}
.glass-strip{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  padding:18px 22px;
  border-radius:18px;
  background:rgba(255,255,255,.045);
  border:1px solid var(--line-soft);
  font-size:14px;
  color:var(--text-mid);
  margin-top:28px;
}
.glass-strip strong{color:var(--text-hi);font-weight:600}

/* roulang page: category5 */
:root{
    --bg-deep:#070C1A;
    --bg-layer:#0C1428;
    --bg-panel:rgba(255,255,255,.06);
    --bg-panel-soft:rgba(255,255,255,.04);
    --line-soft:rgba(255,255,255,.10);
    --line-strong:rgba(255,255,255,.18);
    --brand-primary:#2DE1C2;
    --brand-primary-deep:#12A88E;
    --brand-accent:#FF6B4A;
    --brand-warn:#FFC94D;
    --text-hi:#EAF2FF;
    --text-mid:#A7B6D0;
    --text-low:#6E7E9C;
    --radius-card:20px;
    --radius-hero:24px;
    --radius-input:14px;
    --shadow-card:0 1px 0 rgba(255,255,255,.04) inset, 0 18px 40px rgba(0,0,0,.45);
    --shadow-lift:0 24px 56px rgba(0,0,0,.55), 0 0 0 1px rgba(45,225,194,.35);
    --shadow-glow:0 0 0 1px rgba(45,225,194,.5), 0 10px 30px rgba(45,225,194,.28);
    --shadow-glow-a:0 0 0 1px rgba(255,107,74,.5), 0 10px 30px rgba(255,107,74,.28);
    --ease:cubic-bezier(.22,.61,.36,1);
    --gap-sec:64px;
  }
  @media (min-width:1024px){ :root{ --gap-sec:96px; } }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
  body{
    margin:0;
    background-color:var(--bg-deep);
    background-image:
      radial-gradient(680px 460px at 10% -8%, rgba(45,225,194,.13), transparent 70%),
      radial-gradient(760px 520px at 94% 4%, rgba(255,107,74,.09), transparent 72%);
    background-attachment:fixed;
    color:var(--text-mid);
    font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Source Han Sans SC',system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,figure,ul,ol{ margin:0; padding:0; }
  ul,ol{ list-style:none; }
  img{ display:block; max-width:100%; height:auto; }
  a{ color:inherit; text-decoration:none; transition:color .2s var(--ease); }
  button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
  :focus-visible{ outline:2px solid var(--brand-primary); outline-offset:2px; border-radius:10px; }
  .mono{ font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; font-variant-numeric:tabular-nums; }

  .container{ width:100%; max-width:1240px; margin:0 auto; padding:0 16px; }
  @media (min-width:768px){ .container{ padding:0 24px; } }
  @media (min-width:1280px){ .container{ padding:0 32px; } }

  /* ============ 顶部导航 ============ */
  .site-head{
    position:sticky; top:0; z-index:60;
    background:rgba(7,12,26,.72);
    -webkit-backdrop-filter:blur(20px);
    backdrop-filter:blur(20px);
    border-bottom:1px solid rgba(255,255,255,.08);
    transition:background .3s var(--ease);
  }
  .site-head.is-scrolled{ background:rgba(7,12,26,.92); }
  .nav{ display:flex; align-items:center; gap:18px; height:72px; }
  .logo{ display:inline-flex; align-items:center; gap:10px; flex-shrink:0; }
  .logo__mark{
    width:28px; height:28px; border-radius:9px;
    background:linear-gradient(135deg,#2DE1C2,#12A88E);
    display:grid; place-items:center;
    box-shadow:0 0 18px rgba(45,225,194,.42);
    flex-shrink:0;
  }
  .logo__mark span{ width:9px; height:9px; border-radius:2px; background:#04121A; transform:rotate(45deg); }
  .logo__text{ display:flex; flex-direction:column; line-height:1.15; }
  .logo__main{ font-size:16px; font-weight:800; color:var(--text-hi); letter-spacing:.4px; }
  .logo__sub{ font-size:11px; color:var(--text-low); letter-spacing:.8px; }
  .nav__pill{
    display:flex; align-items:center; gap:2px;
    padding:4px; margin-left:8px;
    border:1px solid var(--line-soft);
    border-radius:999px;
    background:rgba(255,255,255,.04);
  }
  .nav__link{
    padding:8px 14px; border-radius:999px;
    font-size:15px; font-weight:500; color:var(--text-mid);
    white-space:nowrap;
    transition:color .2s var(--ease), background .2s var(--ease);
  }
  .nav__link:hover{ color:var(--text-hi); background:rgba(255,255,255,.07); }
  .nav__link.is-active{
    color:var(--brand-primary);
    background:rgba(45,225,194,.14);
    box-shadow:inset 0 0 0 1px rgba(45,225,194,.35);
  }
  .nav__cta{ margin-left:auto; }
  .nav__burger{
    display:none; margin-left:auto;
    width:44px; height:44px; border-radius:12px;
    border:1px solid var(--line-soft);
    background:rgba(255,255,255,.05);
    align-items:center; justify-content:center;
    flex-direction:column; gap:5px;
  }
  .nav__burger span, .nav__burger span::before, .nav__burger span::after{
    content:''; display:block; width:18px; height:2px; border-radius:2px; background:var(--text-hi);
    transition:transform .24s var(--ease);
  }
  .nav__burger span{ position:relative; }
  .nav__burger span::before{ position:absolute; top:-6px; }
  .nav__burger span::after{ position:absolute; top:6px; }
  @media (max-width:1023px){
    .nav__pill, .nav__cta{ display:none; }
    .nav__burger{ display:flex; }
  }

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    padding:13px 26px;
    border-radius:999px;
    font-size:15px; font-weight:600; line-height:1.2;
    border:1px solid transparent;
    transition:transform .12s var(--ease), box-shadow .12s var(--ease), filter .12s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
  }
  .btn--primary{
    background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-deep));
    color:#03161A;
    box-shadow:var(--shadow-glow);
  }
  .btn--primary:hover{ filter:brightness(1.08); transform:translateY(-2px); }
  .btn--primary:active{ transform:translateY(0); box-shadow:inset 0 3px 12px rgba(0,0,0,.3); }
  .btn--accent{
    background:linear-gradient(135deg,#FF6B4A,#E24F30);
    color:#1B0703;
    box-shadow:var(--shadow-glow-a);
  }
  .btn--accent:hover{ filter:brightness(1.08); transform:translateY(-2px); }
  .btn--ghost{
    background:rgba(255,255,255,.05);
    border-color:var(--line-strong);
    color:var(--text-hi);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
  }
  .btn--ghost:hover{ transform:translateY(-2px); border-color:rgba(45,225,194,.5); color:var(--brand-primary); }
  .btn--sm{ padding:9px 18px; font-size:14px; }

  /* ============ 移动抽屉 ============ */
  .drawer{
    position:fixed; top:0; right:0; bottom:0; z-index:90;
    width:min(320px,86vw);
    padding:22px 20px 28px;
    background:rgba(10,17,34,.97);
    -webkit-backdrop-filter:blur(20px);
    backdrop-filter:blur(20px);
    border-left:1px solid var(--line-soft);
    transform:translateX(105%);
    transition:transform .34s var(--ease);
    display:flex; flex-direction:column; gap:8px;
    overflow-y:auto;
  }
  .drawer.is-open{ transform:translateX(0); }
  .drawer__head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:10px; }
  .drawer__title{ font-size:13px; letter-spacing:2px; color:var(--text-low); }
  .drawer__close{
    width:44px; height:44px; border-radius:12px;
    border:1px solid var(--line-soft); background:rgba(255,255,255,.05);
    color:var(--text-hi); font-size:20px; line-height:1;
  }
  .drawer__link{
    display:block; padding:14px 16px;
    border-radius:var(--radius-input);
    border:1px solid var(--line-soft);
    background:rgba(255,255,255,.04);
    color:var(--text-hi); font-size:15px;
    opacity:0; transform:translateX(14px);
    transition:opacity .3s var(--ease), transform .3s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
  }
  .drawer.is-open .drawer__link{ opacity:1; transform:translateX(0); }
  .drawer.is-open .drawer__link:nth-child(1){ transition-delay:.05s; }
  .drawer.is-open .drawer__link:nth-child(2){ transition-delay:.09s; }
  .drawer.is-open .drawer__link:nth-child(3){ transition-delay:.13s; }
  .drawer.is-open .drawer__link:nth-child(4){ transition-delay:.17s; }
  .drawer.is-open .drawer__link:nth-child(5){ transition-delay:.21s; }
  .drawer.is-open .drawer__link:nth-child(6){ transition-delay:.25s; }
  .drawer__link.is-active{ color:var(--brand-primary); border-color:rgba(45,225,194,.4); background:rgba(45,225,194,.12); }
  .drawer__cta{ margin-top:auto; }
  .drawer__mask{
    position:fixed; inset:0; z-index:80;
    background:rgba(3,7,16,.62);
    opacity:0; pointer-events:none;
    transition:opacity .3s var(--ease);
  }
  .drawer__mask.is-open{ opacity:1; pointer-events:auto; }
  @media (min-width:1024px){ .drawer, .drawer__mask{ display:none; } }

  /* ============ 分类头区 ============ */
  .cat-hero{ position:relative; overflow:hidden; border-bottom:1px solid var(--line-soft); }
  .cat-hero__bg{
    position:absolute; inset:0;
    background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    opacity:.42;
  }
  .cat-hero__veil{
    position:absolute; inset:0;
    background:linear-gradient(90deg,rgba(7,12,26,.97) 0%,rgba(7,12,26,.74) 52%,rgba(7,12,26,.94) 100%);
  }
  .cat-hero__inner{
    position:relative; z-index:2;
    display:grid; gap:26px;
    padding-top:46px; padding-bottom:48px;
  }
  @media (min-width:1024px){
    .cat-hero__inner{ grid-template-columns:1fr auto; align-items:end; padding-top:60px; padding-bottom:62px; }
  }
  .crumb{ display:flex; align-items:center; gap:8px; font-size:14px; color:var(--text-low); margin-bottom:16px; flex-wrap:wrap; }
  .crumb a:hover{ color:var(--brand-primary); }
  .crumb__sep{ color:rgba(255,255,255,.22); }
  .cat-hero h1{
    font-size:clamp(28px,4.4vw,44px);
    line-height:1.24; font-weight:800; color:var(--text-hi);
    letter-spacing:0;
  }
  .cat-hero h1 em{ font-style:normal; color:var(--brand-primary); }
  .cat-hero__sub{ margin-top:16px; max-width:640px; font-size:17px; line-height:1.8; color:var(--text-mid); }
  .hero-tags{ display:flex; flex-wrap:wrap; gap:10px; margin-top:22px; }
  .tag{
    display:inline-flex; align-items:center; gap:6px;
    padding:6px 13px; border-radius:8px;
    font-size:13px; color:var(--text-mid);
    background:rgba(255,255,255,.06);
    border:1px solid var(--line-soft);
  }
  .tag--brand{ color:var(--brand-primary); border-color:rgba(45,225,194,.32); background:rgba(45,225,194,.10); }
  .tag--warn{ color:var(--brand-warn); border-color:rgba(255,201,77,.32); background:rgba(255,201,77,.10); }
  .stat-pills{ display:flex; flex-wrap:wrap; gap:12px; }
  .pill{
    min-width:132px;
    padding:14px 18px;
    border-radius:16px;
    background:rgba(255,255,255,.06);
    border:1px solid var(--line-soft);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
  }
  .pill strong{ display:block; font-size:22px; font-weight:800; color:var(--brand-primary); font-variant-numeric:tabular-nums; line-height:1.25; }
  .pill span{ font-size:13px; color:var(--text-low); }

  /* ============ 通用板块 ============ */
  .section{ padding:var(--gap-sec) 0; }
  .section--tight{ padding:calc(var(--gap-sec) * .7) 0; }
  .section--layer{ background:var(--bg-layer); }
  .sec-head{ display:flex; align-items:flex-end; justify-content:space-between; gap:20px; margin-bottom:32px; flex-wrap:wrap; }
  .sec-title{
    position:relative; padding-left:16px;
    font-size:clamp(22px,2.6vw,29px); font-weight:700; line-height:1.35; color:var(--text-hi);
  }
  .sec-title::before{
    content:''; position:absolute; left:0; top:.34em;
    width:4px; height:22px; border-radius:2px;
    background:linear-gradient(180deg,var(--brand-primary),var(--brand-primary-deep));
  }
  .sec-desc{ margin-top:10px; font-size:15px; color:var(--text-low); max-width:760px; }
  .sec-more{ font-size:14px; color:var(--brand-primary); display:inline-flex; align-items:center; gap:6px; }
  .sec-more:hover{ color:var(--text-hi); }

  .prose p{ font-size:16px; line-height:1.85; color:var(--text-mid); margin-bottom:1.1em; }
  .prose p:last-child{ margin-bottom:0; }
  .prose a{ color:var(--brand-primary); text-decoration:underline; text-underline-offset:2px; }

  /* ============ 卡片 ============ */
  .card{
    position:relative;
    background:var(--bg-panel);
    border:1px solid var(--line-soft);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    overflow:hidden;
    transition:transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
  }
  .card::before{
    content:''; position:absolute; left:0; right:0; top:0; height:1px; pointer-events:none;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,.38),transparent);
  }
  .card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-lift); border-color:rgba(45,225,194,.35); }
  .card__media{ position:relative; overflow:hidden; background:var(--bg-layer); aspect-ratio:16/10; }
  .card__media img{ width:100%; height:100%; object-fit:cover; transition:transform .4s var(--ease); }
  .card:hover .card__media img{ transform:scale(1.04); }
  .card__media::after{
    content:''; position:absolute; inset:0;
    background:linear-gradient(180deg,rgba(7,12,26,.02),rgba(7,12,26,.62));
  }
  .card__body{ padding:20px 22px 22px; }
  .card h3{ font-size:17px; font-weight:600; color:var(--text-hi); line-height:1.55; }
  .card__text{ margin-top:9px; font-size:14px; line-height:1.75; color:var(--text-low); }
  .card__meta{ margin-top:14px; display:flex; align-items:center; justify-content:space-between; gap:12px; font-size:13px; color:var(--text-low); }
  .card__link{ color:var(--brand-primary); font-weight:600; font-size:13px; }
  .card__link:hover{ color:var(--text-hi); }

  /* ============ 横向轨道 ============ */
  .rail-wrap{ position:relative; }
  .rail{
    display:flex; gap:20px;
    overflow-x:auto;
    scroll-snap-type:x mandatory;
    padding-bottom:10px;
    scrollbar-width:none;
    -ms-overflow-style:none;
  }
  .rail::-webkit-scrollbar{ display:none; }
  .rail__item{ flex:0 0 260px; scroll-snap-align:start; }
  @media (min-width:640px){ .rail__item{ flex:0 0 272px; } }
  @media (min-width:1024px){ .rail__item{ flex:0 0 288px; } }
  .rail-card{ display:flex; flex-direction:column; height:100%; }
  .rail-card .card__media{ aspect-ratio:3/4; }
  .rail-card .card__badge{
    position:absolute; top:12px; left:12px; z-index:3;
    display:inline-flex; align-items:center; gap:6px;
    padding:5px 10px; border-radius:8px;
    font-size:12px; font-weight:700; letter-spacing:.5px;
    color:#03161A; background:var(--brand-primary);
    font-variant-numeric:tabular-nums;
  }
  .rail-card .card__time{
    position:absolute; top:12px; right:12px; z-index:3;
    padding:5px 10px; border-radius:8px;
    font-size:12px; color:var(--text-hi);
    background:rgba(7,12,26,.6);
    border:1px solid var(--line-soft);
    font-variant-numeric:tabular-nums;
  }
  .rail-hint{ font-size:13px; color:var(--text-low); display:flex; align-items:center; gap:8px; }
  .rail-hint::before{ content:''; width:22px; height:1px; background:linear-gradient(90deg,var(--brand-primary),transparent); }

  /* ============ 顶部四项信息 ============ */
  .grid-4{ display:grid; grid-template-columns:1fr; gap:18px; }
  @media (min-width:640px){ .grid-4{ grid-template-columns:1fr 1fr; } }
  @media (min-width:1024px){ .grid-4{ grid-template-columns:repeat(4,1fr); } }
  .info-card{ padding:24px 22px; border-radius:var(--radius-card); background:var(--bg-panel-soft); border:1px solid var(--line-soft); }
  .info-card__num{ font-size:13px; font-weight:700; color:var(--brand-primary); letter-spacing:1px; font-variant-numeric:tabular-nums; }
  .info-card h3{ margin-top:10px; font-size:17px; font-weight:600; color:var(--text-hi); }
  .info-card p{ margin-top:8px; font-size:14px; line-height:1.8; color:var(--text-low); }

  /* ============ 步骤时间轴 ============ */
  .steps{ position:relative; padding-left:26px; }
  .steps::before{
    content:''; position:absolute; left:7px; top:8px; bottom:8px; width:2px;
    background:linear-gradient(180deg,var(--brand-primary),rgba(45,225,194,.08));
  }
  .step{ position:relative; padding:0 0 26px 0; }
  .step:last-child{ padding-bottom:0; }
  .step::before{
    content:''; position:absolute; left:-26px; top:7px;
    width:16px; height:16px; border-radius:50%;
    background:var(--bg-deep);
    border:2px solid var(--brand-primary);
    box-shadow:0 0 0 4px rgba(45,225,194,.12);
  }
  .step__idx{ font-size:12px; letter-spacing:1px; color:var(--brand-primary); font-variant-numeric:tabular-nums; }
  .step h3{ margin-top:4px; font-size:17px; font-weight:600; color:var(--text-hi); }
  .step p{ margin-top:6px; font-size:14.5px; line-height:1.8; color:var(--text-mid); }

  /* ============ 两列卡片收尾 ============ */
  .grid-2{ display:grid; grid-template-columns:1fr; gap:24px; }
  @media (min-width:900px){ .grid-2{ grid-template-columns:1fr 1fr; } }
  .card--row .card__media{ aspect-ratio:16/9; }
  @media (min-width:640px){
    .card--row{ display:grid; grid-template-columns:190px 1fr; align-items:stretch; }
    .card--row .card__media{ aspect-ratio:auto; height:100%; min-height:170px; }
  }

  /* ============ 核对提示条 ============ */
  .check-list{ display:grid; gap:12px; }
  .check-item{
    display:flex; gap:14px; align-items:flex-start;
    padding:18px 20px;
    border-radius:16px;
    background:rgba(255,255,255,.04);
    border:1px solid var(--line-soft);
  }
  .check-item__dot{
    flex-shrink:0; width:24px; height:24px; border-radius:8px;
    display:grid; place-items:center;
    font-size:12px; font-weight:700; color:#03161A;
    background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-deep));
    font-variant-numeric:tabular-nums;
  }
  .check-item h3{ font-size:16px; font-weight:600; color:var(--text-hi); }
  .check-item p{ margin-top:6px; font-size:14px; line-height:1.8; color:var(--text-low); }

  /* ============ FAQ ============ */
  .faq{
    border:1px solid var(--line-soft);
    border-radius:var(--radius-card);
    background:var(--bg-panel);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    overflow:hidden;
    box-shadow:var(--shadow-card);
  }
  .faq details + details{ border-top:1px solid var(--line-soft); }
  .faq summary{
    display:flex; align-items:center; justify-content:space-between; gap:18px;
    padding:20px 24px;
    font-size:16.5px; font-weight:600; color:var(--text-hi);
    cursor:pointer; list-style:none;
    transition:background .2s var(--ease), box-shadow .2s var(--ease);
  }
  .faq summary::-webkit-details-marker{ display:none; }
  .faq summary::after{
    content:'+'; flex-shrink:0;
    font-size:20px; line-height:1; color:var(--brand-primary);
    transition:transform .24s var(--ease);
  }
  .faq summary:hover{ background:rgba(255,255,255,.05); }
  .faq details[open] summary{ box-shadow:inset 3px 0 0 var(--brand-primary); }
  .faq details[open] summary::after{ transform:rotate(45deg); }
  .faq__a{ padding:0 24px 22px; font-size:15px; line-height:1.85; color:var(--text-mid); }

  /* ============ CTA ============ */
  .cta-band{
    position:relative; overflow:hidden;
    border-radius:var(--radius-hero);
    border:1px solid var(--line-soft);
    background:var(--bg-panel);
    -webkit-backdrop-filter:blur(20px);
    backdrop-filter:blur(20px);
    box-shadow:var(--shadow-card);
  }
  .cta-band__bg{
    position:absolute; inset:0;
    background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    opacity:.3;
  }
  .cta-band__veil{
    position:absolute; inset:0;
    background:linear-gradient(100deg,rgba(7,12,26,.96) 0%,rgba(7,12,26,.72) 60%,rgba(7,12,26,.9) 100%);
  }
  .cta-band__inner{
    position:relative; z-index:2;
    display:grid; gap:24px;
    padding:34px 26px;
  }
  @media (min-width:900px){
    .cta-band__inner{ grid-template-columns:1fr auto; align-items:center; padding:44px 46px; }
  }
  .cta-band h2{ font-size:clamp(21px,2.4vw,27px); font-weight:700; color:var(--text-hi); line-height:1.4; }
  .cta-band p{ margin-top:10px; font-size:15px; color:var(--text-mid); max-width:620px; }
  .cta-actions{ display:flex; flex-wrap:wrap; gap:12px; }

  /* ============ 页脚 ============ */
  .site-foot{
    position:relative;
    margin-top:20px;
    background:var(--bg-layer);
    border-top:1px solid var(--line-soft);
  }
  .site-foot::before{
    content:''; position:absolute; top:-1px; left:0; right:0; height:1px;
    background:linear-gradient(90deg,var(--brand-primary),rgba(45,225,194,.05) 60%,transparent);
  }
  .foot-grid{ display:grid; grid-template-columns:1fr; gap:30px; padding:54px 0 30px; }
  @media (min-width:520px){ .foot-grid{ grid-template-columns:1fr 1fr; } }
  @media (min-width:1024px){ .foot-grid{ grid-template-columns:1.45fr 1fr 1fr 1fr; gap:36px; } }
  .foot-col p{ font-size:14px; line-height:1.8; color:var(--text-low); margin-bottom:10px; }
  .foot-col h4{ font-size:14px; font-weight:700; color:var(--text-hi); margin-bottom:16px; letter-spacing:.4px; }
  .foot-col ul{ display:grid; gap:11px; }
  .foot-col li{ font-size:14px; color:var(--text-low); }
  .foot-col a{ font-size:14px; color:var(--text-mid); }
  .foot-col a:hover{ color:var(--brand-primary); }
  .foot-bottom{
    display:flex; flex-wrap:wrap; gap:10px; align-items:center; justify-content:space-between;
    padding:18px 0 26px;
    border-top:1px solid var(--line-soft);
    font-size:13px; color:var(--text-low);
  }

  @media (max-width:639px){
    .cat-hero__inner{ padding-top:34px; padding-bottom:36px; }
    .pill{ min-width:118px; padding:12px 14px; }
    .pill strong{ font-size:19px; }
    .faq summary{ padding:17px 18px; font-size:15.5px; }
    .faq__a{ padding:0 18px 18px; }
    .cta-band__inner{ padding:28px 20px; }
    .card__body{ padding:18px; }
  }