/* roulang page: index */
:root{
  --bg:#050A12;
  --bg-panel:#0A131F;
  --bg-card:#0F1B2A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#22E1B4;
  --brand-2:#12B8FF;
  --accent:#FF5A2E;
  --gold:#FFC24B;
  --t1:#E8F0F8;
  --t2:#A7B6C7;
  --t3:#6E8098;
  --glass:rgba(255,255,255,.045);
  --r-card:20px;
  --r-inner:16px;
  --r-img:16px;
  --r-input:12px;
  --r-tag:6px;
  --r-pill:999px;
  --sh1:0 2px 8px rgba(0,0,0,.28);
  --sh2:0 16px 40px -12px rgba(0,0,0,.55);
  --sh3:0 32px 80px -20px rgba(0,0,0,.7);
  --glow:0 0 0 1px rgba(34,225,180,.28),0 10px 30px -8px rgba(34,225,180,.42);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
strong{font-weight:800}
::selection{background:rgba(34,225,180,.28);color:#fff}
:focus-visible{outline:3px solid rgba(34,225,180,.75);outline-offset:3px;border-radius:4px}

.site-bg{position:fixed;inset:0;z-index:0;pointer-events:none}
.site-bg::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(900px 560px at 84% -10%, rgba(34,225,180,.085), transparent 62%),
    radial-gradient(680px 420px at 4% 22%, rgba(18,184,255,.06), transparent 66%),
    linear-gradient(rgba(255,255,255,.038) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.038) 1px, transparent 1px);
  background-size:auto,auto,40px 40px,40px 40px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.45) 55%,transparent 100%);
  mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.45) 55%,transparent 100%);
}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;position:relative}
.section{padding:96px 0;position:relative;z-index:1}
.section--panel{background:linear-gradient(180deg,rgba(10,19,31,.86),rgba(10,19,31,.42));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--brand);border:1px solid rgba(34,225,180,.3);
  background:rgba(34,225,180,.07);border-radius:var(--r-pill);
  padding:7px 16px;line-height:1;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:block;box-shadow:0 0 10px rgba(34,225,180,.9);font-style:normal}
.eyebrow--warm{color:var(--accent);border-color:rgba(255,90,46,.34);background:rgba(255,90,46,.08)}
.eyebrow--warm i{background:var(--accent);box-shadow:0 0 10px rgba(255,90,46,.85)}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px;flex-wrap:wrap}
.section-head h2{font-size:clamp(1.5rem,2.4vw,2.125rem);line-height:1.25;font-weight:700;letter-spacing:-.01em;margin-top:18px}
.section-head p{color:var(--t2);max-width:640px;margin-top:12px;font-size:.9375rem}
.sec-no{font-size:.75rem;letter-spacing:.12em;color:var(--t3);display:block;margin-bottom:8px}

/* ===== 导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:72px;display:flex;align-items:center;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(5,10,18,.72);
  -webkit-backdrop-filter:blur(18px) saturate(130%);
  backdrop-filter:blur(18px) saturate(130%);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;width:100%}
.logo{display:inline-flex;align-items:center;gap:8px;font-size:1.0625rem;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.logo span{font-weight:400;color:var(--t2)}
.logo-dot{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block;box-shadow:0 0 10px rgba(34,225,180,.9)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;font-size:.9375rem;letter-spacing:.02em;color:var(--t2);
  padding:9px 14px;border-radius:var(--r-pill);transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:2px;height:1px;background:var(--brand);
  transition:left .2s var(--ease),right .2s var(--ease);
}
.nav-link:hover{color:var(--t1)}
.nav-link:hover::after{left:14px;right:14px}
.nav-link.is-active{color:var(--brand);background:rgba(34,225,180,.12)}
.nav-link.is-active::after{display:none}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--t1);transition:transform .25s var(--ease),opacity .25s var(--ease)}
body.menu-open .nav-toggle span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
body.menu-open .nav-toggle span:nth-child(2){opacity:0}
body.menu-open .nav-toggle span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

.nav-drawer{
  position:fixed;inset:72px 0 0 0;z-index:55;
  background:rgba(5,10,18,.94);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  border-top:1px solid var(--line);
  padding:32px 24px 48px;display:none;flex-direction:column;gap:6px;
  opacity:0;transform:translateY(-8px);transition:opacity .25s var(--ease),transform .25s var(--ease);
}
body.menu-open .nav-drawer{opacity:1;transform:translateY(0)}
.nav-drawer a{
  font-size:1.5rem;font-weight:700;padding:16px 4px;border-bottom:1px solid var(--line);
  opacity:0;transform:translateY(8px);animation:none;
}
body.menu-open .nav-drawer a{animation:drawerIn .4s var(--ease) forwards}
body.menu-open .nav-drawer a:nth-child(1){animation-delay:.04s}
body.menu-open .nav-drawer a:nth-child(2){animation-delay:.08s}
body.menu-open .nav-drawer a:nth-child(3){animation-delay:.12s}
body.menu-open .nav-drawer a:nth-child(4){animation-delay:.16s}
@keyframes drawerIn{to{opacity:1;transform:translateY(0)}}
.nav-drawer .btn{margin-top:24px;align-self:flex-start}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  border-radius:var(--r-pill);padding:14px 28px;font-weight:700;font-size:.9375rem;line-height:1;
  border:1px solid transparent;cursor:pointer;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(100deg,#22E1B4 0%,#22E1B4 64%,#12B8FF 100%);
  color:#04121C;box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,225,180,.4),0 18px 42px -10px rgba(34,225,180,.55)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(34,225,180,.3),0 6px 16px -6px rgba(34,225,180,.45)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--brand)}
.btn-ghost:hover{background:rgba(34,225,180,.10);border-color:rgba(34,225,180,.45);transform:translateY(-2px)}
.btn-sm{padding:11px 22px;font-size:.875rem}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}
.btn-text{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:600;font-size:.9375rem}
.btn-text i{font-style:normal;transition:transform .2s var(--ease)}
.btn-text:hover i{transform:translateX(6px)}

/* ===== 标签 ===== */
.tag{
  display:inline-block;font-size:.75rem;line-height:1;letter-spacing:.12em;
  padding:6px 10px;border-radius:var(--r-tag);border:1px solid transparent;
}
.tag--cat{color:var(--brand);background:rgba(34,225,180,.11);border-color:rgba(34,225,180,.26)}
.tag--time{color:var(--accent);background:rgba(255,90,46,.11);border-color:rgba(255,90,46,.26)}
.tag--rank{color:var(--gold);background:rgba(255,194,75,.11);border-color:rgba(255,194,75,.28)}
.tag--plain{color:var(--t2);background:rgba(255,255,255,.04);border-color:var(--line)}

/* ===== Hero ===== */
.hero{padding:150px 0 96px;position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;min-height:82vh}
.hero h1{
  font-size:clamp(2.25rem,4.6vw,3.75rem);line-height:1.12;font-weight:800;letter-spacing:-.02em;
  margin:24px 0 0;
}
.hero h1 em{font-style:normal;color:var(--brand);text-shadow:0 0 26px rgba(34,225,180,.35)}
.hero-sub{color:var(--t2);font-size:1.0625rem;max-width:560px;margin-top:20px}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px;margin-top:36px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:56px;border-top:1px solid var(--line);padding-top:0}
.hero-stats li{padding:22px 20px 0 0;border-right:1px solid var(--line)}
.hero-stats li:last-child{border-right:0}
.hero-stats strong{display:block;font-size:1.75rem;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.hero-stats span{display:block;font-size:.8125rem;color:var(--t3);margin-top:6px}
.hero-visual{position:relative}
.hero-frame{
  position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh3);background:var(--bg-card);
}
.hero-frame img{width:100%;height:100%;min-height:440px;object-fit:cover}
.hero-frame::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,10,18,.04) 0%,rgba(5,10,18,.62) 100%)}
.hero-float{
  position:absolute;right:-24px;bottom:-24px;width:248px;
  background:rgba(15,27,42,.92);border:1px solid var(--line);border-radius:var(--r-inner);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh2);padding:20px;
}
.hero-float .hf-top{display:flex;align-items:center;justify-content:space-between;gap:8px}
.hero-float strong{display:block;font-size:1.5rem;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;margin-top:10px}
.hero-float span{font-size:.8125rem;color:var(--t3)}
.hf-bar{height:6px;border-radius:999px;background:rgba(255,255,255,.08);margin-top:14px;overflow:hidden}
.hf-bar i{display:block;height:100%;width:78%;border-radius:999px;background:linear-gradient(90deg,#22E1B4,#12B8FF);font-style:normal}

/* ===== 主张带 ===== */
.claims{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(10,19,31,.55)}
.claims ul{display:grid;grid-template-columns:repeat(3,1fr)}
.claims li{padding:32px 32px 32px 0;border-right:1px solid var(--line);font-size:1rem;color:var(--t2)}
.claims li:last-child{border-right:0}
.claims li b{display:block;color:var(--t1);font-size:1.0625rem;font-weight:700;margin-bottom:6px}

/* ===== 故事 ===== */
.story-grid{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start}
.story-figure{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh2)}
.story-figure img{width:100%;height:100%;min-height:420px;object-fit:cover}
.story-figure figcaption{position:absolute;left:20px;bottom:16px;font-size:.8125rem;color:var(--t2)}
.story-text p{color:var(--t2);max-width:62ch;margin-top:16px}
.timeline{margin-top:40px;border-top:1px solid var(--line)}
.timeline li{display:flex;gap:24px;padding:24px 0;border-bottom:1px solid var(--line)}
.timeline b{
  font-size:2rem;font-weight:800;line-height:1;letter-spacing:-.02em;
  color:transparent;-webkit-text-stroke:1px rgba(34,225,180,.75);font-variant-numeric:tabular-nums;
  min-width:64px;
}
.timeline h3{font-size:1.0625rem;font-weight:700;line-height:1.4}
.timeline span{display:block;color:var(--t2);font-size:.9375rem;margin-top:6px}

/* ===== Bento 精选 ===== */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.bento-card{
  position:relative;display:flex;flex-direction:column;justify-content:flex-end;
  min-height:220px;border-radius:var(--r-card);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh2);padding:26px;transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.bento-card:hover{transform:translateY(-2px);border-color:rgba(34,225,180,.35);box-shadow:0 0 0 1px rgba(34,225,180,.2),var(--sh2)}
.bento-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.bento-card::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(5,10,18,.25) 0%,rgba(5,10,18,.86) 78%)}
.bento-card > *{position:relative;z-index:2}
.bento-card h3{font-size:1.25rem;font-weight:700;line-height:1.4;margin-top:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.bento-card p{color:var(--t2);font-size:.875rem;margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.bento-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;font-size:.8125rem;color:var(--t3)}
.bento-card--hero{grid-column:span 6;grid-row:span 2;min-height:464px;padding:32px}
.bento-card--hero h3{font-size:clamp(1.375rem,2vw,1.75rem);-webkit-line-clamp:3}
.bento-card--hero p{-webkit-line-clamp:3;font-size:.9375rem}
.bento-card--hero::before{content:"";position:absolute;left:0;top:32px;bottom:32px;width:3px;background:var(--brand);z-index:3;box-shadow:0 0 18px rgba(34,225,180,.7)}
.bento-card--sm{grid-column:span 3}

/* ===== 最新信息 ===== */
.post-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;gap:12px;padding:28px;
  border-radius:var(--r-card);border:1px solid var(--line);background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh2);transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.post-card:hover{transform:translateY(-2px);border-color:rgba(34,225,180,.35);box-shadow:0 0 0 1px rgba(34,225,180,.2),var(--sh2)}
.post-card h3{font-size:1.125rem;font-weight:700;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card h3 a:hover{color:var(--brand)}
.post-card p{color:var(--t2);font-size:.9375rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card__meta{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid var(--line);padding-top:16px;font-size:.8125rem;color:var(--t3)}
.post-card__meta a{color:var(--brand);font-weight:600}
.post-card__meta a:hover i{transform:translateX(4px)}
.post-card__meta i{font-style:normal;display:inline-block;transition:transform .2s var(--ease)}
.empty-state{
  grid-column:1/-1;border:1px dashed rgba(255,255,255,.16);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;color:var(--t3);font-size:.9375rem;background:rgba(255,255,255,.02);
}
.skeleton{grid-column:1/-1;display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.skeleton span{display:block;height:168px;border-radius:var(--r-card);background:var(--bg-card);animation:breathe 1.4s ease-in-out infinite}
@keyframes breathe{0%,100%{opacity:.55}50%{opacity:1}}

/* ===== 信任背书 ===== */
.trust-stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line)}
.trust-stats li{padding:32px 24px 0 0;border-right:1px solid var(--line)}
.trust-stats li:last-child{border-right:0}
.trust-stats strong{display:block;font-size:clamp(1.75rem,3vw,2.5rem);font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.trust-stats span{display:block;color:var(--t3);font-size:.875rem;margin-top:8px}
.logo-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:48px}
.logo-row span{
  font-size:.8125rem;letter-spacing:.08em;color:var(--t3);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:9px 18px;transition:color .2s var(--ease),border-color .2s var(--ease);
}
.logo-row span:hover{color:var(--t1);border-color:var(--line-strong)}

/* ===== FAQ ===== */
.faq-list{border-top:1px solid var(--line)}
.faq-item{position:relative;border-bottom:1px solid var(--line)}
.faq-item::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:2px;background:var(--brand);
  opacity:0;transform:scaleY(.2);transform-origin:top;transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.faq-item.is-open::before{opacity:1;transform:scaleY(1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:none;border:0;text-align:left;padding:24px 0 24px 20px;cursor:pointer;
  font-size:1rem;font-weight:600;line-height:1.6;color:var(--t1);transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-q i{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line-strong);
  display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-size:1rem;
  color:var(--brand);transition:transform .3s var(--ease),border-color .2s var(--ease);
}
.faq-item.is-open .faq-q i{transform:rotate(180deg);border-color:rgba(34,225,180,.5)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-item.is-open .faq-a{max-height:340px}
.faq-a p{color:var(--t2);padding:0 46px 26px 20px}

/* ===== CTA / 表单 ===== */
.cta-panel{
  display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;
  border-radius:24px;border:1px solid var(--line);padding:48px;
  background:linear-gradient(140deg,rgba(34,225,180,.08),rgba(18,184,255,.05) 45%,rgba(15,27,42,.7));
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh3);
}
.cta-panel h2{font-size:clamp(1.5rem,2.4vw,2.125rem);line-height:1.25;font-weight:700;margin-top:16px}
.cta-panel p{color:var(--t2);margin-top:14px;max-width:44ch}
.form-row{display:flex;gap:12px;flex-wrap:wrap}
.form-row input{
  flex:1 1 240px;min-width:0;background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:var(--r-input);padding:15px 18px;color:var(--t1);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-row input::placeholder{color:var(--t3)}
.form-row input:focus{outline:none;border-color:rgba(34,225,180,.65);box-shadow:0 0 0 3px rgba(34,225,180,.16)}
.form-row input.is-error{border-color:rgba(255,90,46,.7);box-shadow:0 0 0 3px rgba(255,90,46,.14)}
.form-hint{font-size:.8125rem;color:var(--t3);margin-top:14px}
.form-hint.is-error{color:var(--accent)}
.form-success{
  display:inline-flex;align-items:center;gap:10px;font-size:.9375rem;color:var(--brand);
  border:1px solid rgba(34,225,180,.3);background:rgba(34,225,180,.08);
  border-radius:var(--r-input);padding:15px 18px;
}

/* ===== 页脚 ===== */
.site-footer{background:#03070D;border-top:1px solid var(--line);position:relative;z-index:1;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:4fr 3fr 3fr 2fr;gap:0}
.footer-col{padding:0 28px;border-right:1px solid var(--line)}
.footer-col:first-child{padding-left:0}
.footer-col:last-child{border-right:0;padding-right:0}
.footer-col h4{font-size:.8125rem;letter-spacing:.12em;color:var(--t3);font-weight:600;margin-bottom:18px}
.footer-brand{font-size:1.0625rem;font-weight:700;display:flex;align-items:center;gap:8px}
.footer-brand span{font-weight:400;color:var(--t2)}
.footer-col p{color:var(--t3);font-size:.875rem;margin-top:14px;max-width:30ch}
.footer-col li{margin-bottom:12px}
.footer-col a{color:var(--t3);font-size:.9375rem;display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:24px 0;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:.8125rem;color:var(--t3);
}
.footer-bottom nav{display:flex;gap:24px;flex-wrap:wrap}
.footer-bottom nav a{color:var(--t3)}
.footer-bottom nav a:hover{color:var(--brand)}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .container{padding:0 24px}
  .hero-grid{grid-template-columns:1fr;gap:48px;min-height:auto}
  .hero{padding:130px 0 80px}
  .hero-frame img{min-height:340px}
  .story-grid{grid-template-columns:1fr;gap:40px}
  .story-figure img{min-height:300px}
  .bento-card--hero{grid-column:span 12;grid-row:auto;min-height:340px}
  .bento-card--sm{grid-column:span 6}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:40px 0}
  .footer-col{padding:0 24px}
  .footer-col:nth-child(2n){border-right:0;padding-right:0}
  .footer-col:nth-child(2n+1){padding-left:0}
}
@media (max-width:991px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .nav-drawer{display:flex}
  .section{padding:64px 0}
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:36px}
  .trust-stats{grid-template-columns:repeat(2,1fr)}
  .trust-stats li{padding:26px 20px 0 0}
  .trust-stats li:nth-child(2n){border-right:0}
  .claims ul{grid-template-columns:1fr}
  .claims li{border-right:0;border-bottom:1px solid var(--line);padding:24px 0}
  .claims li:last-child{border-bottom:0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .hero{padding:112px 0 64px}
  .hero-float{position:static;width:100%;margin-top:16px}
  .hero-stats{grid-template-columns:repeat(2,1fr);margin-top:40px}
  .hero-stats li{border-right:0;border-bottom:1px solid var(--line);padding:18px 12px 18px 0}
  .hero-stats li:nth-child(2n){padding-right:0}
  .hero-stats li:last-child{border-bottom:0}
  .post-grid{grid-template-columns:1fr}
  .bento-card--sm{grid-column:span 12}
  .section-head{margin-bottom:32px}
  .timeline li{flex-direction:column;gap:10px}
  .footer-grid{grid-template-columns:1fr;gap:32px 0}
  .footer-col{border-right:0;padding:0;border-bottom:1px solid var(--line);padding-bottom:28px}
  .footer-col:last-child{border-bottom:0;padding-bottom:0}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:575px){
  body{font-size:15px}
  .hero h1{font-size:2rem}
  .btn{width:100%}
  .hero-cta{flex-direction:column}
  .nav-drawer .btn{width:auto}
  .bento{padding-bottom:0}
  .trust-stats{grid-template-columns:1fr}
  .trust-stats li{border-right:0;border-bottom:1px solid var(--line);padding:22px 0}
  .trust-stats li:last-child{border-bottom:0}
  .cta-panel{padding:28px 22px}
  .form-row{flex-direction:column}
  .form-row .btn{width:100%}
}

/* roulang page: article */
:root{
  --bg:#050A12;
  --bg-panel:#0A131F;
  --bg-card:#0F1B2A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#22E1B4;
  --primary-2:#12B8FF;
  --accent:#FF5A2E;
  --amber:#FFC24B;
  --tx1:#E8F0F8;
  --tx2:#A7B6C7;
  --tx3:#6E8098;
  --sh1:0 2px 8px rgba(0,0,0,.28);
  --sh2:0 16px 40px -12px rgba(0,0,0,.55);
  --sh3:0 32px 80px -20px rgba(0,0,0,.7);
  --glow:0 0 0 1px rgba(34,225,180,.28), 0 10px 30px -8px rgba(34,225,180,.42);
  --glass:rgba(255,255,255,.045);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-xs:6px;
  --r-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--tx2);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(34,225,180,.55);outline-offset:2px;border-radius:var(--r-xs)}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--tx1);font-weight:700;letter-spacing:-.01em}
p{margin:0}
::selection{background:rgba(34,225,180,.28);color:#fff}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.num{font-family:"Inter",sans-serif;font-variant-numeric:tabular-nums;font-weight:800;letter-spacing:-.02em}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  height:72px;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(5,10,18,.72);
  backdrop-filter:blur(18px) saturate(130%);
  -webkit-backdrop-filter:blur(18px) saturate(130%);
  border-bottom:1px solid var(--line);
}
.nav-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{
  display:inline-flex;align-items:center;
  font-size:1.125rem;font-weight:700;color:var(--tx1);letter-spacing:.01em;
  white-space:nowrap;
}
.logo span{font-weight:400;color:var(--tx2);margin-left:2px}
.logo-dot{
  width:6px;height:6px;border-radius:50%;background:var(--primary);
  margin-left:10px;box-shadow:0 0 10px rgba(34,225,180,.9);
}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-link{
  position:relative;
  font-size:.9375rem;letter-spacing:.02em;color:var(--tx2);
  padding:6px 2px;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--primary);transform:scaleX(0);transform-origin:center;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--tx1)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary);background:rgba(34,225,180,.12);border-radius:var(--r-pill);padding:6px 14px}
.nav-link.is-active::after{display:none}
.nav-actions{display:flex;align-items:center;gap:16px}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);
  border-radius:var(--r-sm);background:rgba(255,255,255,.03);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--tx1);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease)}
.site-header.nav-open .nav-toggle span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.site-header.nav-open .nav-toggle span:nth-child(2){opacity:0}
.site-header.nav-open .nav-toggle span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  border-radius:var(--r-pill);
  font-weight:700;font-size:.9375rem;line-height:1;
  padding:14px 28px;
  transition:transform .2s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .2s var(--ease),opacity .2s var(--ease);
  white-space:nowrap;
}
.btn-sm{padding:11px 20px;font-size:.875rem}
.btn-primary{
  background:linear-gradient(96deg,var(--primary) 0%,var(--primary-2) 100%);
  color:#04121C;
  box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,225,180,.4),0 18px 44px -10px rgba(34,225,180,.55)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(34,225,180,.3),0 6px 16px -6px rgba(34,225,180,.4)}
.btn-ghost{
  background:transparent;color:var(--primary);
  border:1px solid var(--line-strong);
}
.btn-ghost:hover{background:rgba(34,225,180,.10);border-color:rgba(34,225,180,.35);transform:translateY(-2px)}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--primary);font-weight:700;font-size:.9375rem;
}
.btn-link i{display:inline-block;transition:transform .25s var(--ease);font-style:normal}
.btn-link:hover i{transform:translateX(6px)}
.btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}

/* ---------- page shell ---------- */
.page-glow{
  position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(680px 420px at 88% 8%,rgba(34,225,180,.09),transparent 68%),
    radial-gradient(520px 380px at 6% 42%,rgba(18,184,255,.06),transparent 70%);
}
.grid-bg::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:40px 40px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
main{position:relative;z-index:1}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{font-size:clamp(1.5rem,2.4vw,2.125rem);line-height:1.25}
.section-head p{margin-top:12px;max-width:52ch;color:var(--tx3);font-size:.9375rem}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.75rem;letter-spacing:.12em;color:var(--primary);
  text-transform:uppercase;line-height:1;
  border:1px solid rgba(34,225,180,.3);border-radius:var(--r-xs);
  padding:7px 12px;background:rgba(34,225,180,.08);
}
.hairline{height:1px;background:var(--line);border:0;margin:0}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  padding:152px 0 56px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.article-hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(34,225,180,.13),transparent 68%);pointer-events:none;
}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:.8125rem;color:var(--tx3);flex-wrap:wrap;margin-bottom:24px}
.breadcrumb a{color:var(--tx3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span.sep{color:var(--tx3);opacity:.6}
.breadcrumb .current{color:var(--tx2);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero h1{
  font-size:clamp(1.75rem,3.4vw,2.5rem);
  line-height:1.28;
  font-weight:800;
  letter-spacing:-.015em;
  max-width:20ch;
}
.article-hero h1.long{max-width:26ch;font-size:clamp(1.65rem,3vw,2.25rem)}
.article-meta{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  margin-top:24px;font-size:.875rem;color:var(--tx3);
}
.meta-tag{
  display:inline-flex;align-items:center;
  font-size:.75rem;letter-spacing:.1em;line-height:1;
  color:var(--primary);background:rgba(34,225,180,.1);
  border:1px solid rgba(34,225,180,.26);
  border-radius:var(--r-xs);padding:7px 11px;
}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--tx3);opacity:.7}
.meta-time{color:var(--accent)}
.article-cover{
  margin:40px 0 0;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh2);position:relative;
}
.article-cover img{width:100%;height:min(42vh,360px);object-fit:cover}
.article-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,18,.05) 30%,rgba(5,10,18,.62) 100%);
}
.article-cover figcaption{
  position:absolute;left:20px;bottom:16px;z-index:2;
  font-size:.8125rem;color:var(--tx2);
}

/* ---------- article layout ---------- */
.article-wrap{padding:64px 0 96px}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,760px) 280px;
  gap:64px;
  justify-content:center;
  align-items:start;
}
.article-body{min-width:0}
.prose{font-size:1rem;line-height:1.9;color:var(--tx2)}
.prose > * + *{margin-top:1.6em}
.prose p{margin:0}
.prose h2{
  position:relative;
  margin-top:48px;
  padding-left:16px;
  font-size:1.5rem;line-height:1.45;font-weight:700;color:var(--tx1);
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.35em;bottom:.35em;width:4px;
  background:linear-gradient(180deg,var(--primary),rgba(18,184,255,.5));border-radius:2px;
}
.prose h3{margin-top:32px;font-size:1.25rem;line-height:1.4;font-weight:700;color:var(--tx1)}
.prose a{color:var(--primary);border-bottom:1px solid rgba(34,225,180,.35)}
.prose a:hover{color:#7df3d7;border-bottom-color:#7df3d7}
.prose strong{color:var(--tx1);font-weight:700}
.prose ul,.prose ol{padding-left:1.25em}
.prose ul li,.prose ol li{position:relative;margin:.6em 0;padding-left:1.1em}
.prose ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;
  background:var(--primary);opacity:.9;
}
.prose ol{list-style:decimal;padding-left:1.4em}
.prose ol li{padding-left:.2em}
.prose ol li::marker{color:var(--primary);font-weight:700}
.prose blockquote{
  margin:32px 0;padding:22px 24px;
  background:var(--glass);backdrop-filter:blur(14px) saturate(120%);
  border-left:2px solid var(--primary);border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--tx2);font-size:1rem;
}
.prose blockquote p{margin:0}
.prose img{border-radius:var(--r-md);border:1px solid var(--line);width:100%}
.prose figure{margin:32px 0}
.prose figcaption{margin-top:12px;font-size:.8125rem;color:var(--tx3);text-align:center}
.prose table{width:100%;border-collapse:collapse;font-size:.9375rem;display:block;overflow-x:auto}
.prose th,.prose td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
.prose th{color:var(--tx1);font-weight:700;background:rgba(255,255,255,.03);border-bottom-color:var(--line-strong)}
.prose td:first-child,.prose th:first-child{position:sticky;left:0;background:var(--bg-panel);z-index:1}
.prose code{
  font-family:"Inter",monospace;font-size:.875em;color:var(--primary);
  background:rgba(34,225,180,.1);border-radius:var(--r-xs);padding:2px 6px;
}
.article-empty{
  border:1px dashed var(--line-strong);border-radius:var(--r-lg);
  padding:48px 32px;text-align:center;background:rgba(255,255,255,.02);
}
.article-empty h2{font-size:1.25rem;margin-bottom:12px}
.article-empty p{color:var(--tx3);margin-bottom:24px}

/* ---------- side ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--glass);backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh2),inset 0 1px 0 rgba(255,255,255,.06);
  padding:24px;
}
.side-card h3{font-size:1rem;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--primary)}
.side-list li + li{border-top:1px solid var(--line)}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 0;font-size:.9375rem;color:var(--tx2);
}
.side-list a:hover{color:var(--primary)}
.side-list a i{font-style:normal;color:var(--tx3);transition:transform .2s var(--ease)}
.side-list a:hover i{transform:translateX(4px);color:var(--primary)}
.side-note{font-size:.8125rem;color:var(--tx3);line-height:1.7;margin-bottom:16px}

/* ---------- tail blocks ---------- */
.article-tail{margin-top:56px;padding-top:32px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:40px}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.tag-row .label{font-size:.75rem;letter-spacing:.12em;color:var(--tx3)}
.tag{
  display:inline-flex;align-items:center;
  font-size:.75rem;letter-spacing:.08em;line-height:1;
  color:var(--tx2);border:1px solid var(--line-strong);
  border-radius:var(--r-pill);padding:8px 14px;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.tag:hover{border-color:rgba(34,225,180,.4);color:var(--primary);background:rgba(34,225,180,.08)}
.tag.hot{color:var(--accent);border-color:rgba(255,90,46,.36)}
.tag.rank{color:var(--amber);border-color:rgba(255,194,75,.34)}
.share-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:.875rem;color:var(--tx3)}
.share-row a{color:var(--tx2);border-bottom:1px solid var(--line-strong);padding-bottom:2px}
.share-row a:hover{color:var(--primary);border-bottom-color:var(--primary)}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--line)}
.post-nav-item{
  padding:24px 0;display:flex;flex-direction:column;gap:8px;
  min-width:0;
}
.post-nav-item + .post-nav-item{border-left:1px solid var(--line);padding-left:32px;text-align:right;align-items:flex-end}
.post-nav-item:first-child{padding-right:32px}
.post-nav-item .k{font-size:.75rem;letter-spacing:.12em;color:var(--tx3)}
.post-nav-item a{font-size:1rem;color:var(--tx1);font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}
.post-nav-item a:hover{color:var(--primary)}
.post-nav-item span.muted{font-size:.9375rem;color:var(--tx3)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  position:relative;display:flex;flex-direction:column;gap:14px;
  background:var(--glass);backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh2),inset 0 1px 0 rgba(255,255,255,.06);
  padding:24px;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:rgba(34,225,180,.35);box-shadow:var(--sh3),inset 0 1px 0 rgba(255,255,255,.06)}
.card h3{font-size:1.125rem;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card p{font-size:.9375rem;color:var(--tx3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:.8125rem;color:var(--tx3)}
.card-thumb{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);position:relative}
.card-thumb img{width:100%;height:150px;object-fit:cover}
.card-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(5,10,18,.55) 100%)}
.arrow{font-style:normal;color:var(--primary);transition:transform .25s var(--ease)}
.card:hover .arrow{transform:translateX(5px)}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,rgba(34,225,180,.10),rgba(18,184,255,.06) 55%,rgba(255,255,255,.03));
  border:1px solid rgba(34,225,180,.22);
  border-radius:24px;box-shadow:var(--sh2);
  padding:48px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
}
.cta-panel::after{
  content:"";position:absolute;right:-80px;bottom:-140px;width:340px;height:340px;
  background:radial-gradient(circle,rgba(34,225,180,.18),transparent 70%);
}
.cta-panel h2{font-size:clamp(1.4rem,2.2vw,1.875rem);line-height:1.35;margin-bottom:14px}
.cta-panel p{color:var(--tx2);font-size:.9375rem;max-width:46ch}
.subscribe-form{position:relative;z-index:1;display:flex;flex-direction:column;gap:12px}
.field-row{display:flex;gap:12px}
.field-row input{
  flex:1;min-width:0;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-strong);
  border-radius:var(--r-sm);
  color:var(--tx1);padding:14px 16px;font-size:.9375rem;
  transition:border-color .2s var(--ease),box-shadow .25s var(--ease);
}
.field-row input::placeholder{color:var(--tx3)}
.field-row input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(34,225,180,.18)}
.field-row input.is-error{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,90,46,.16)}
.form-hint{font-size:.8125rem;color:var(--tx3)}
.form-hint.error{color:var(--accent)}
.form-success{
  display:flex;align-items:center;gap:12px;
  border:1px solid rgba(34,225,180,.35);background:rgba(34,225,180,.10);
  border-radius:var(--r-sm);padding:18px 20px;color:var(--tx1);font-size:.9375rem;
}
.form-success i{font-style:normal;color:var(--primary);font-weight:800}

/* ---------- footer ---------- */
.site-footer{
  position:relative;z-index:1;
  background:#03070D;
  border-top:1px solid var(--line);
  padding:72px 0 28px;
  margin-top:96px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:0}
.footer-col{padding:0 32px;border-left:1px solid var(--line)}
.footer-col:first-child{padding-left:0;border-left:0}
.footer-col:last-child{padding-right:0}
.footer-brand{display:flex;align-items:center;font-size:1.0625rem;font-weight:700;color:var(--tx1);margin-bottom:14px}
.footer-brand span{font-weight:400;color:var(--tx2);margin-left:2px}
.footer-col p{font-size:.875rem;color:var(--tx3);max-width:30ch;line-height:1.75}
.footer-col h4{font-size:.8125rem;letter-spacing:.12em;color:var(--tx1);margin-bottom:18px;font-weight:700}
.footer-col ul li + li{margin-top:12px}
.footer-col ul a{font-size:.875rem;color:var(--tx3);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col ul a:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.8125rem;color:var(--tx3);
}
.footer-bottom nav{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom nav a{color:var(--tx3)}
.footer-bottom nav a:hover{color:var(--primary)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,760px);gap:0;justify-content:center}
  .article-side{display:none}
  .section{padding:80px 0}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px 0}
  .footer-col:nth-child(3){border-left:0;padding-left:0}
}
@media (max-width:991px){
  .nav-links{
    position:fixed;top:60px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:flex-start;gap:8px;
    padding:32px 24px 40px;
    background:rgba(5,10,18,.94);
    backdrop-filter:blur(20px) saturate(130%);
    -webkit-backdrop-filter:blur(20px) saturate(130%);
    border-top:1px solid var(--line);
    transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .25s var(--ease),transform .25s var(--ease);
    overflow-y:auto;
  }
  .site-header.nav-open .nav-links{opacity:1;transform:translateY(0);pointer-events:auto}
  .nav-links .nav-link{
    font-size:1.5rem;font-weight:700;color:var(--tx1);
    padding:14px 0;width:100%;border-bottom:1px solid var(--line);
    opacity:0;transform:translateY(-8px);
  }
  .site-header.nav-open .nav-link{opacity:1;transform:translateY(0);transition:opacity .3s var(--ease),transform .3s var(--ease)}
  .site-header.nav-open .nav-link:nth-child(1){transition-delay:.04s}
  .site-header.nav-open .nav-link:nth-child(2){transition-delay:.08s}
  .site-header.nav-open .nav-link:nth-child(3){transition-delay:.12s}
  .site-header.nav-open .nav-link:nth-child(4){transition-delay:.16s}
  .nav-link.is-active{background:none;border-radius:0;padding:14px 0;color:var(--primary)}
  .nav-link::after{display:none}
  .nav-toggle{display:flex}
  .article-hero{padding:120px 0 48px}
  .cta-panel{grid-template-columns:1fr;padding:36px 28px;gap:28px}
  .section{padding:64px 0}
}
@media (max-width:767px){
  .container{padding:0 24px}
  .article-hero h1,.article-hero h1.long{max-width:100%}
  .breadcrumb .current{max-width:100%;white-space:normal}
  .related-grid{grid-template-columns:1fr}
  .post-nav{grid-template-columns:1fr}
  .post-nav-item + .post-nav-item{border-left:0;border-top:1px solid var(--line);padding-left:0;text-align:left;align-items:flex-start}
  .post-nav-item:first-child{padding-right:0}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-col{padding:0;border-left:0}
  .article-cover img{height:220px}
  .prose h2{font-size:1.3rem;margin-top:40px}
}
@media (max-width:575px){
  .container{padding:0 20px}
  .logo{font-size:1rem}
  .logo span{display:inline}
  .nav-actions .btn{display:none}
  .article-hero{padding:104px 0 40px}
  .field-row{flex-direction:column}
  .field-row input,.field-row .btn{width:100%}
  .section{padding:48px 0}
  .cta-panel{padding:28px 22px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --bg:#050A12;
  --panel:#0A131F;
  --card:#0F1B2A;
  --line:rgba(255,255,255,.08);
  --brand:#22E1B4;
  --brand-2:#12B8FF;
  --orange:#FF5A2E;
  --amber:#FFC24B;
  --t1:#E8F0F8;
  --t2:#A7B6C7;
  --t3:#6E8098;
  --glass:rgba(255,255,255,.045);
  --sh1:0 2px 8px rgba(0,0,0,.28);
  --sh2:0 16px 40px -12px rgba(0,0,0,.55);
  --sh3:0 32px 80px -20px rgba(0,0,0,.7);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-xs:6px;
  --max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding-top:72px;
  background:var(--bg);
  color:var(--t1);
  font-family:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:1rem;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(900px 520px at 84% -10%,rgba(34,225,180,.09),transparent 70%),
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:auto,40px 40px,40px 40px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.35) 55%,transparent 100%);
  mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.35) 55%,transparent 100%);
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(34,225,180,.5);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 32px}
.site-header,.page-main,.site-footer{position:relative;z-index:1}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{font-size:clamp(1.5rem,2.4vw,2.125rem);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section-head p{color:var(--t3);font-size:.9375rem;margin-top:8px}
.eyebrow{font-size:.75rem;letter-spacing:.12em;color:var(--brand);font-weight:600;display:inline-block;margin-bottom:12px}

/* ---------- Header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,backdrop-filter .28s ease;
}
.site-header.is-scrolled{
  background:rgba(5,10,18,.72);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;height:72px}
.logo{
  display:inline-flex;align-items:center;gap:2px;
  font-size:1.125rem;font-weight:700;color:var(--t1);letter-spacing:.01em;
  white-space:nowrap;
}
.logo span{font-weight:400;color:var(--t2)}
.logo-dot{
  width:6px;height:6px;border-radius:50%;background:var(--brand);
  display:inline-block;margin-left:6px;
  box-shadow:0 0 10px rgba(34,225,180,.85);
}
.nav-links{display:flex;align-items:center;gap:12px}
.nav-link{
  position:relative;
  display:inline-block;
  color:var(--t2);
  font-size:.9375rem;
  letter-spacing:.02em;
  padding:9px 14px;
  border-radius:999px;
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;right:50%;bottom:3px;height:1px;
  background:var(--brand);
  transition:left .2s ease,right .2s ease;
}
.nav-link:hover{color:var(--t1)}
.nav-link:hover::after{left:14px;right:14px}
.nav-link.is-active{color:var(--brand);background:rgba(34,225,180,.12)}
.nav-link.is-active::after{display:none}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--t1);transition:transform .25s ease,opacity .25s ease}
.nav-toggle:hover{border-color:rgba(34,225,180,.4)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.drawer-cta{display:none}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;
  font-weight:700;
  font-size:.9375rem;
  border:1px solid transparent;
  cursor:pointer;
  padding:14px 28px;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{
  background:linear-gradient(100deg,#22E1B4 0%,#12B8FF 100%);
  color:#04121C;
  box-shadow:0 8px 24px -10px rgba(34,225,180,.6);
}
.btn-primary:hover{
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(34,225,180,.28),0 14px 34px -10px rgba(34,225,180,.55);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px -8px rgba(34,225,180,.6)}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.14);
  color:var(--brand);
}
.btn-ghost:hover{background:rgba(34,225,180,.10);border-color:rgba(34,225,180,.4);transform:translateY(-2px)}
.btn-text{
  padding:0;background:none;border:0;color:var(--brand);font-weight:600;
  display:inline-flex;align-items:center;gap:8px;
}
.btn-text span{transition:transform .2s ease;display:inline-block}
.btn-text:hover span{transform:translateX(6px)}
.btn-sm{padding:10px 20px;font-size:.875rem}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}

/* ---------- Page head ---------- */
.page-head{padding:64px 0 0}
.crumb{display:flex;align-items:center;gap:10px;font-size:.875rem;color:var(--t3)}
.crumb a{color:var(--t3);transition:color .2s ease}
.crumb a:hover{color:var(--brand)}
.crumb i{font-style:normal;color:#2c3c50}
.page-title{
  font-size:clamp(2rem,3.6vw,3rem);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.02em;
  margin:22px 0 16px;
  max-width:20em;
}
.page-title em{font-style:normal;color:var(--brand)}
.lede{color:var(--t2);font-size:1.0625rem;max-width:58ch}
.banner{
  position:relative;
  margin-top:40px;
  height:30vh;
  min-height:220px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  overflow:hidden;
  background:url(/assets/images/backpic/back-2.png) center/cover no-repeat;
  box-shadow:var(--sh2);
}
.banner::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,18,.35) 0%,rgba(5,10,18,.88) 100%);
}
.banner-cap{position:absolute;left:28px;right:28px;bottom:24px;z-index:2}
.banner-cap strong{display:block;font-size:1.125rem;font-weight:700;margin-bottom:4px}
.banner-cap span{font-size:.8125rem;color:var(--t2)}

/* ---------- Stats ---------- */
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  margin-top:56px;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stat{padding:26px 24px 26px 0;border-right:1px solid var(--line)}
.stat:first-child{padding-left:0}
.stat:last-child{border-right:0}
.stat b{
  display:block;
  font-size:clamp(1.75rem,2.6vw,2.25rem);
  font-weight:800;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  line-height:1.1;
}
.stat b em{font-style:normal;font-size:.5em;color:var(--t3);margin-left:4px;font-weight:600}
.stat span{display:block;margin-top:6px;font-size:.8125rem;color:var(--t3);letter-spacing:.02em}

/* ---------- Layout ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 236px;gap:56px;align-items:start;margin-top:72px}
.side-nav{position:sticky;top:104px}
.side-nav h3{font-size:.75rem;letter-spacing:.12em;color:var(--t3);font-weight:600;margin-bottom:14px}
.side-nav a{
  display:block;position:relative;
  padding:11px 0 11px 18px;
  color:var(--t2);font-size:.9375rem;
  border-bottom:1px solid var(--line);
  transition:color .2s ease,padding-left .2s ease;
}
.side-nav a::before{
  content:"";position:absolute;left:0;top:50%;
  width:6px;height:6px;border-radius:50%;background:#26374a;
  transform:translateY(-50%);
  transition:background .2s ease,box-shadow .2s ease;
}
.side-nav a:hover{color:var(--t1);padding-left:22px}
.side-nav a.is-active{color:var(--brand)}
.side-nav a.is-active::before{background:var(--brand);box-shadow:0 0 10px rgba(34,225,180,.85)}

/* ---------- Timeline list ---------- */
.timeline{border-top:1px solid var(--line)}
.tl-item{
  display:grid;
  grid-template-columns:84px minmax(0,1fr);
  gap:24px;
  padding:30px 12px 30px 0;
  border-bottom:1px solid var(--line);
  transition:background .2s ease,padding-left .2s ease;
}
.tl-item:hover{background:rgba(255,255,255,.03);padding-left:12px}
.tl-no{
  font-size:2rem;
  font-weight:800;
  line-height:1;
  letter-spacing:-.02em;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  opacity:.92;
}
.tl-body h3{font-size:1.25rem;line-height:1.4;font-weight:700;margin-bottom:8px;transition:color .2s ease}
.tl-item:hover .tl-body h3{color:var(--brand)}
.tl-body p{color:var(--t2);font-size:.9375rem;line-height:1.8;max-width:66ch;margin-bottom:14px}
.tl-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.75rem;letter-spacing:.12em;
  padding:5px 10px;border-radius:var(--r-xs);
  border:1px solid transparent;
}
.tag-brand{color:var(--brand);background:rgba(34,225,180,.10);border-color:rgba(34,225,180,.24)}
.tag-time{color:var(--orange);background:rgba(255,90,46,.10);border-color:rgba(255,90,46,.24)}
.tag-amber{color:var(--amber);background:rgba(255,194,75,.10);border-color:rgba(255,194,75,.26)}

/* ---------- Feature ---------- */
.feature{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:56px;align-items:center}
.feature-media{position:relative}
.feature-media img{width:100%;height:340px;object-fit:cover;border:1px solid var(--line);box-shadow:var(--sh2)}
.feature-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-md);
  background:linear-gradient(180deg,rgba(5,10,18,0) 40%,rgba(5,10,18,.6) 100%);
  pointer-events:none;
}
.feature h2{font-size:clamp(1.5rem,2.4vw,2.125rem);line-height:1.25;font-weight:700;margin-bottom:20px}
.feature p{color:var(--t2);font-size:1rem;line-height:1.85;margin-bottom:16px;max-width:62ch}
.feature .btn-text{margin-top:8px}

/* ---------- Columns ---------- */
.cols3{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cols3 > div{padding:30px 28px;border-right:1px solid var(--line)}
.cols3 > div:last-child{border-right:0}
.cols3 > div:first-child{padding-left:0}
.cols3 h3{font-size:1.125rem;font-weight:700;margin-bottom:10px}
.cols3 p{color:var(--t2);font-size:.9375rem;line-height:1.8}
.cols3 .mini{display:block;margin-top:14px;font-size:.75rem;letter-spacing:.12em;color:var(--amber)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:24px 0;
  background:none;border:0;
  color:var(--t1);
  font-size:1rem;font-weight:600;line-height:1.5;
  text-align:left;
  cursor:pointer;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex:0 0 auto;
  position:relative;
  width:20px;height:20px;
  transition:transform .3s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--brand);border-radius:2px;
}
.faq-icon::before{width:14px;height:1.6px;transform:translate(-50%,-50%)}
.faq-icon::after{width:1.6px;height:14px;transform:translate(-50%,-50%)}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a-inner{
  padding:0 0 26px 18px;
  border-left:2px solid var(--brand);
  color:var(--t2);
  font-size:1rem;
  line-height:1.85;
  max-width:78ch;
}

/* ---------- CTA ---------- */
.cta-band{
  margin:96px 0;
  padding:48px;
  border-radius:24px;
  border:1px solid rgba(34,225,180,.24);
  background:linear-gradient(120deg,rgba(34,225,180,.10) 0%,rgba(18,184,255,.06) 100%);
  box-shadow:var(--sh2),0 0 70px -34px rgba(34,225,180,.65);
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(1.5rem,2.2vw,1.875rem);line-height:1.3;font-weight:700;margin-bottom:10px;max-width:22em}
.cta-band p{color:var(--t2);font-size:.9375rem;max-width:46ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- Footer ---------- */
.site-footer{background:#03080F;border-top:1px solid var(--line);margin-top:24px}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:0;
}
.footer-col{padding:56px 28px;border-right:1px solid var(--line)}
.footer-col:first-child{padding-left:0}
.footer-col:last-child{border-right:0;padding-right:0}
.footer-brand{
  display:inline-flex;align-items:center;
  font-size:1.0625rem;font-weight:700;color:var(--t1);margin-bottom:14px;
}
.footer-brand span{font-weight:400;color:var(--t2)}
.footer-col p{color:var(--t3);font-size:.875rem;line-height:1.75;max-width:30ch}
.footer-col h4{font-size:.8125rem;letter-spacing:.12em;color:var(--t3);font-weight:600;margin-bottom:18px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{
  color:var(--t3);font-size:.9375rem;
  display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-col ul a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:22px 0 28px;
  border-top:1px solid var(--line);
  color:var(--t3);font-size:.8125rem;
}
.footer-bottom nav{display:flex;gap:22px}
.footer-bottom nav a{color:var(--t3);transition:color .2s ease}
.footer-bottom nav a:hover{color:var(--brand)}

/* ---------- Skeleton / empty (state styles) ---------- */
.skeleton{background:var(--card);border-radius:var(--r-sm);animation:breathe 1.4s ease-in-out infinite}
@keyframes breathe{0%,100%{opacity:.55}50%{opacity:1}}
.empty-slot{
  border:1px dashed rgba(255,255,255,.16);
  border-radius:var(--r-md);
  padding:36px 24px;
  text-align:center;
  color:var(--t3);
  font-size:.9375rem;
  background:rgba(255,255,255,.02);
}
[data-anchor]{scroll-margin-top:104px}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 24px}
  .layout{grid-template-columns:minmax(0,1fr);gap:0}
  .side-nav{display:none}
}
@media (max-width:991px){
  body{padding-top:60px}
  .container{padding:0 24px}
  .nav-inner{height:60px}
  .nav-toggle{display:flex}
  .nav-actions .btn-sm{display:none}
  .nav-links{
    position:fixed;
    inset:0;
    z-index:70;
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:96px 24px 40px;
    background:rgba(5,10,18,.94);
    backdrop-filter:blur(18px) saturate(120%);
    -webkit-backdrop-filter:blur(18px) saturate(120%);
    transform:translateY(-102%);
    transition:transform .34s cubic-bezier(.4,0,.2,1);
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateY(0)}
  .nav-link{
    width:100%;
    font-size:1.5rem;
    padding:18px 0;
    border-radius:0;
    border-bottom:1px solid var(--line);
    opacity:0;
    transform:translateY(10px);
    transition:opacity .3s ease,transform .3s ease,color .2s ease;
  }
  .nav-link::after{display:none}
  .nav-link.is-active{background:none;padding-left:0}
  .nav-links.is-open .nav-link{opacity:1;transform:none}
  .nav-links.is-open .nav-link:nth-child(1){transition-delay:.04s}
  .nav-links.is-open .nav-link:nth-child(2){transition-delay:.08s}
  .nav-links.is-open .nav-link:nth-child(3){transition-delay:.12s}
  .nav-links.is-open .nav-link:nth-child(4){transition-delay:.16s}
  .nav-links.is-open .drawer-cta{transition-delay:.22s}
  .drawer-cta{
    display:inline-flex;
    margin-top:32px;
    opacity:0;
    transform:translateY(10px);
    transition:opacity .3s ease,transform .3s ease;
  }
  .nav-links.is-open .drawer-cta{opacity:1;transform:none}
  .section{padding:64px 0}
  .page-head{padding:48px 0 0}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat{padding:22px 20px 22px 0}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(3){border-top:1px solid var(--line)}
  .stat:nth-child(4){border-top:1px solid var(--line);border-right:0}
  .layout{margin-top:56px}
  .feature{grid-template-columns:minmax(0,1fr);gap:32px}
  .feature-media img{height:280px}
  .cols3{grid-template-columns:1fr}
  .cols3 > div{padding:24px 0;border-right:0;border-bottom:1px solid var(--line)}
  .cols3 > div:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-col{padding:40px 24px}
  .footer-col:first-child{padding-left:0}
  .footer-col:nth-child(2){border-right:0;padding-right:0}
  .footer-col:nth-child(3){border-top:1px solid var(--line);padding-left:0}
  .footer-col:nth-child(4){border-top:1px solid var(--line);border-right:0;padding-right:0}
  .cta-band{margin:64px 0;padding:36px 28px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .page-title{font-size:clamp(1.75rem,7vw,2.25rem)}
  .banner{height:26vh;min-height:180px}
  .banner-cap{left:20px;right:20px;bottom:18px}
  .tl-item{grid-template-columns:1fr;gap:10px;padding:24px 0}
  .tl-item:hover{padding-left:0}
  .tl-no{font-size:1.5rem}
  .section-head{margin-bottom:28px}
  .feature-media img{height:220px}
  .footer-grid{grid-template-columns:1fr}
  .footer-col{padding:32px 0;border-right:0;border-bottom:1px solid var(--line)}
  .footer-col:last-child{border-bottom:0}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-band{padding:28px 20px;border-radius:20px;margin:56px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .banner-title{font-size:.9375rem}
}
@media (max-width:575px){
  .container{padding:0 16px}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0;padding:20px 0}
  .stat:nth-child(3),.stat:nth-child(4){border-top:1px solid var(--line)}
  .nav-links{padding:88px 20px 32px}
  .nav-link{font-size:1.25rem;padding:16px 0}
  .btn{padding:13px 22px;font-size:.875rem}
  .faq-q{font-size:.9375rem;padding:20px 0}
  .faq-a-inner{font-size:.9375rem}
}

/* roulang page: category2 */
:root{
  --bg:#050A12;
  --bg-soft:#0A131F;
  --card:#0F1B2A;
  --glass:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(34,225,180,.35);
  --primary:#22E1B4;
  --primary-2:#12B8FF;
  --accent:#FF5A2E;
  --gold:#FFC24B;
  --t1:#E8F0F8;
  --t2:#A7B6C7;
  --t3:#6E8098;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-tag:6px;
  --r-pill:999px;
  --sh1:0 2px 8px rgba(0,0,0,.28);
  --sh2:0 16px 40px -12px rgba(0,0,0,.55);
  --sh3:0 32px 80px -20px rgba(0,0,0,.7);
  --glow:0 0 0 1px rgba(34,225,180,.28), 0 10px 30px -8px rgba(34,225,180,.42);
  --container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:40px 40px;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.75),transparent 72%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.75),transparent 72%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(620px 420px at 88% -6%,rgba(34,225,180,.08),transparent 68%),
    radial-gradient(520px 380px at 4% 22%,rgba(18,184,255,.06),transparent 70%);
}
main,header,footer{position:relative;z-index:1;}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

/* ---------- Header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:72px;
  display:flex;
  align-items:center;
  background:transparent;
  transition:background .3s var(--ease),backdrop-filter .3s var(--ease),border-color .3s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(5,10,18,.72);
  -webkit-backdrop-filter:blur(18px) saturate(130%);
  backdrop-filter:blur(18px) saturate(130%);
  border-bottom-color:var(--line);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo,.footer-brand{
  display:inline-flex;
  align-items:center;
  font-size:1.0625rem;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--t1);
  white-space:nowrap;
}
.logo span,.footer-brand span{font-weight:400;color:var(--t2);}
.logo-dot{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--primary);
  margin-left:8px;
  box-shadow:0 0 10px rgba(34,225,180,.8);
  flex:0 0 auto;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:32px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  font-size:.9375rem;
  letter-spacing:.02em;
  color:var(--t2);
  padding:6px 2px;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;bottom:0;
  width:0;height:1px;
  background:var(--primary);
  transform:translateX(-50%);
  transition:width .2s var(--ease);
}
.nav-link:hover{color:var(--t1);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{
  color:var(--primary);
  background:rgba(34,225,180,.12);
  border-radius:var(--r-pill);
  padding:6px 14px;
}
.nav-link.is-active::after{display:none;}
.nav-actions{display:flex;align-items:center;gap:16px;}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:16px;height:1.5px;
  background:var(--t1);
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
body.nav-open .nav-toggle span:nth-child(2){opacity:0;}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--r-pill);
  padding:14px 28px;
  font-weight:700;
  font-size:.9375rem;
  line-height:1;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),filter .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-2) 100%);
  color:#04121C;
  box-shadow:0 10px 26px -12px rgba(34,225,180,.65);
}
.btn-primary:hover{
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 16px 34px -12px rgba(34,225,180,.8);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px -10px rgba(34,225,180,.7);}
.btn-ghost{
  background:transparent;
  border-color:var(--line);
  color:var(--primary);
}
.btn-ghost:hover{background:rgba(34,225,180,.10);border-color:var(--line-strong);}
.btn-sm{padding:10px 20px;font-size:.875rem;}
.btn:focus-visible,
.nav-link:focus-visible,
.faq-q:focus-visible,
.link-arrow:focus-visible,
.footer-col a:focus-visible{
  outline:3px solid rgba(34,225,180,.55);
  outline-offset:2px;
}
.btn[disabled],.btn.is-disabled{
  opacity:.45;
  box-shadow:none;
  pointer-events:none;
}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--primary);
  font-weight:600;
  font-size:.9375rem;
  transition:gap .25s var(--ease),color .2s var(--ease);
}
.link-arrow::after{content:"→";transition:transform .25s var(--ease);}
.link-arrow:hover{gap:14px;}
.link-arrow:hover::after{transform:translateX(2px);}

/* ---------- Page head ---------- */
.page-head{
  position:relative;
  padding:148px 0 72px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px) 0 0/48px 48px,
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px) 0 0/48px 48px,
    radial-gradient(720px 420px at 50% -10%,rgba(34,225,180,.10),transparent 70%);
}
.page-head::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.16;
  -webkit-mask-image:radial-gradient(closest-side at 50% 20%,#000,transparent);
  mask-image:radial-gradient(closest-side at 50% 20%,#000,transparent);
  pointer-events:none;
}
.page-head .container{position:relative;z-index:2;text-align:center;}
.breadcrumb{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:.8125rem;
  color:var(--t3);
  letter-spacing:.04em;
  margin-bottom:22px;
}
.breadcrumb a{color:var(--t3);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span.sep{color:rgba(255,255,255,.22);}
.page-head h1{
  font-size:clamp(1.85rem,3.4vw,2.75rem);
  line-height:1.22;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:900px;
  margin:0 auto;
}
.page-head h1 em{
  font-style:normal;
  color:var(--primary);
}
.page-lead{
  max-width:660px;
  margin:20px auto 0;
  color:var(--t2);
  font-size:1.0625rem;
  line-height:1.8;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.75rem;
  letter-spacing:.12em;
  color:var(--primary);
  background:rgba(34,225,180,.10);
  border:1px solid rgba(34,225,180,.24);
  border-radius:var(--r-tag);
  padding:6px 10px;
  margin-bottom:20px;
}
.head-meta{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:12px 28px;
  margin-top:28px;
  font-size:.8125rem;
  color:var(--t3);
}
.head-meta b{
  color:var(--t1);
  font-family:"Inter","Noto Sans SC",sans-serif;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  margin-right:6px;
}

/* ---------- Section base ---------- */
.section{padding:96px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:56px;
  padding-bottom:24px;
  border-bottom:1px solid var(--line);
}
.section-title{
  font-size:clamp(1.5rem,2.4vw,2.125rem);
  font-weight:700;
  letter-spacing:-.01em;
}
.section-desc{
  margin-top:12px;
  color:var(--t2);
  font-size:.9375rem;
  max-width:620px;
}

/* ---------- Zigzag ---------- */
.zigzag-list{display:flex;flex-direction:column;gap:96px;}
.zz-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
}
.zz-row.is-reverse .zz-media{order:2;}
.zz-media{position:relative;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh2);}
.zz-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.zz-media::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:60%;
  background:linear-gradient(to top,rgba(5,10,18,.85),transparent);
  pointer-events:none;
}
.zz-index{
  position:absolute;
  left:18px;
  bottom:16px;
  z-index:2;
  font-family:"Inter",sans-serif;
  font-weight:800;
  font-size:1.5rem;
  letter-spacing:-.02em;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  text-shadow:0 4px 18px rgba(0,0,0,.7);
}
.zz-tag{
  display:inline-block;
  font-size:.75rem;
  letter-spacing:.12em;
  color:var(--primary);
  background:rgba(34,225,180,.10);
  border:1px solid rgba(34,225,180,.22);
  border-radius:var(--r-tag);
  padding:5px 10px;
  margin-bottom:18px;
}
.zz-body h3{
  font-size:1.25rem;
  font-weight:700;
  margin-bottom:16px;
}
.zz-body p{color:var(--t2);font-size:.9688rem;line-height:1.85;margin-bottom:14px;}
.zz-body .link-arrow{margin-top:8px;}

/* ---------- Stat band ---------- */
.stat-band{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  display:grid;
  grid-template-columns:repeat(3,1fr);
}
.stat-item{
  padding:40px 32px;
  border-right:1px solid var(--line);
}
.stat-item:last-child{border-right:0;}
.stat-num{
  font-family:"Inter","Noto Sans SC",sans-serif;
  font-weight:800;
  font-size:clamp(1.75rem,2.6vw,2.375rem);
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  color:var(--t1);
  line-height:1.1;
}
.stat-num i{font-style:normal;color:var(--primary);font-size:.5em;margin-left:6px;letter-spacing:0;}
.stat-label{margin-top:10px;font-size:.875rem;color:var(--t3);line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  text-align:left;
  padding:24px 0 24px 0;
  font-size:1rem;
  font-weight:600;
  color:var(--t1);
  transition:color .2s var(--ease),padding-left .25s var(--ease);
  position:relative;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:-16px;
  top:24px;
  bottom:24px;
  width:2px;
  background:var(--primary);
  transform:scaleY(0);
  transform-origin:top;
  transition:transform .25s var(--ease);
}
.faq-item.is-open .faq-q{color:var(--primary);}
.faq-item.is-open .faq-q::before{transform:scaleY(1);}
.faq-q:hover{color:var(--primary);}
.faq-icon{
  flex:0 0 auto;
  width:22px;height:22px;
  position:relative;
  transition:transform .3s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--primary);
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:12px;height:1.5px;}
.faq-icon::after{width:1.5px;height:12px;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s var(--ease);
}
.faq-a p{
  color:var(--t2);
  font-size:1rem;
  line-height:1.8;
  padding:0 40px 26px 0;
}

/* ---------- CTA ---------- */
.cta-panel{
  border-radius:24px;
  border:1px solid var(--line);
  background:
    radial-gradient(520px 260px at 8% 0%,rgba(34,225,180,.14),transparent 70%),
    rgba(255,255,255,.045);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh2),inset 0 1px 0 rgba(255,255,255,.06);
  padding:48px;
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:40px;
  align-items:center;
}
.cta-panel h2{
  font-size:clamp(1.4rem,2.2vw,1.875rem);
  line-height:1.3;
}
.cta-panel p{color:var(--t2);font-size:.9375rem;margin-top:14px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:flex-end;}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:96px;
  background:#030710;
  border-top:1px solid var(--line);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:0;
}
.footer-col{
  padding:0 32px;
  border-left:1px solid var(--line);
}
.footer-col:first-child{border-left:0;padding-left:0;}
.footer-col:last-child{padding-right:0;}
.footer-col h4{
  font-size:.8125rem;
  letter-spacing:.12em;
  color:var(--t3);
  font-weight:700;
  margin-bottom:20px;
  text-transform:uppercase;
}
.footer-col p{color:var(--t3);font-size:.875rem;line-height:1.8;margin-top:16px;max-width:280px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{
  color:var(--t3);
  font-size:.875rem;
  display:inline-block;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--primary);transform:translateX(2px);}
.footer-bottom{
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:.8125rem;
  color:var(--t3);
}
.footer-bottom nav{display:flex;gap:24px;flex-wrap:wrap;}
.footer-bottom nav a{color:var(--t3);transition:color .2s var(--ease);}
.footer-bottom nav a:hover{color:var(--primary);}

/* ---------- Skeleton (状态预留) ---------- */
.skeleton{
  background:var(--card);
  border-radius:var(--r-md);
  animation:breath 1.4s ease-in-out infinite;
}
@keyframes breath{
  0%,100%{opacity:.55;}
  50%{opacity:.95;}
}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 24px;}
  .section{padding:80px 0;}
  .zigzag-list{gap:80px;}
  .zz-row{gap:44px;}
}
@media (max-width:991px){
  .site-header{height:60px;}
  .nav-toggle{display:flex;}
  .nav-links{
    position:fixed;
    inset:60px 0 0 0;
    flex-direction:column;
    align-items:flex-start;
    justify-content:flex-start;
    gap:8px;
    padding:32px 24px 40px;
    background:rgba(5,10,18,.94);
    -webkit-backdrop-filter:blur(20px);
    backdrop-filter:blur(20px);
    border-top:1px solid var(--line);
    transform:translateY(-12px);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s;
    overflow-y:auto;
  }
  body.nav-open .nav-links{
    opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto;
  }
  body.nav-open{overflow:hidden;}
  .nav-links .nav-link{
    font-size:1.5rem;
    font-weight:700;
    width:100%;
    padding:12px 0;
    letter-spacing:.01em;
    color:var(--t1);
    opacity:0;
    transform:translateY(8px);
  }
  body.nav-open .nav-links .nav-link{animation:fadeUp .35s var(--ease) forwards;}
  body.nav-open .nav-links .nav-link:nth-child(1){animation-delay:.04s;}
  body.nav-open .nav-links .nav-link:nth-child(2){animation-delay:.08s;}
  body.nav-open .nav-links .nav-link:nth-child(3){animation-delay:.12s;}
  body.nav-open .nav-links .nav-link:nth-child(4){animation-delay:.16s;}
  @keyframes fadeUp{to{opacity:1;transform:translateY(0);}}
  .nav-link.is-active{background:transparent;padding:12px 0;color:var(--primary);}
  .nav-link.is-active::before{
    content:"";
    display:inline-block;
    width:6px;height:6px;
    border-radius:50%;
    background:var(--primary);
    margin-right:10px;
    vertical-align:middle;
  }
  .nav-link::after{display:none;}
  .nav-actions .btn-sm{display:none;}
  .cta-panel{grid-template-columns:1fr;padding:36px 28px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px 0;}
  .footer-col{padding:0 24px;}
  .footer-col:nth-child(3){border-left:0;padding-left:0;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .page-head{padding:118px 0 56px;}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:40px;}
  .zz-row{grid-template-columns:1fr;gap:24px;}
  .zz-row.is-reverse .zz-media{order:0;}
  .zigzag-list{gap:64px;}
  .zz-body p{font-size:.9375rem;}
  .stat-band{grid-template-columns:1fr;}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);padding:28px 0;}
  .stat-item:last-child{border-bottom:0;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-col{border-left:0;padding:0 0 0 0;}
  .footer-col h4{margin-bottom:14px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-panel{padding:28px 22px;border-radius:20px;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:575px){
  .logo{font-size:.9688rem;}
  .page-head h1{font-size:1.6rem;}
  .head-meta{gap:10px 18px;}
  .faq-q{font-size:.9375rem;padding:20px 0;}
  .faq-a p{padding-right:8px;}
  .btn{padding:13px 22px;font-size:.9rem;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* roulang page: category3 */
:root{
  --bg:#050A12;
  --panel:#0A131F;
  --card:#0F1B2A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#22E1B4;
  --brand-2:#12B8FF;
  --accent:#FF5A2E;
  --amber:#FFC24B;
  --t1:#E8F0F8;
  --t2:#A7B6C7;
  --t3:#6E8098;
  --r-card:20px;
  --r-sm:16px;
  --r-input:12px;
  --r-tag:6px;
  --r-pill:999px;
  --sh1:0 2px 8px rgba(0,0,0,.28);
  --sh2:0 16px 40px -12px rgba(0,0,0,.55);
  --sh3:0 32px 80px -20px rgba(0,0,0,.7);
  --glow:0 0 0 1px rgba(34,225,180,.28),0 10px 30px -8px rgba(34,225,180,.42);
  --glass-bg:rgba(255,255,255,.045);
  --container:1200px;
  --head-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:1rem;
  line-height:1.8;
  color:var(--t1);
  background:var(--bg);
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:40px 40px;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.95),rgba(0,0,0,0) 72%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.95),rgba(0,0,0,0) 72%);
}
body::after{
  content:"";
  position:fixed;
  top:-24%;
  right:-14%;
  width:62vw;
  height:62vw;
  pointer-events:none;
  z-index:0;
  background:radial-gradient(circle,rgba(34,225,180,.08),rgba(34,225,180,0) 62%);
}
img{max-width:100%;display:block;border-radius:var(--r-sm);border:1px solid var(--line);}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--t1);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--t1);letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
  position:relative;
  z-index:1;
}
.num{font-family:"Inter",sans-serif;font-variant-numeric:tabular-nums;font-weight:800;letter-spacing:-.02em;}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:var(--head-h);
  display:flex;
  align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,backdrop-filter .28s ease;
}
.site-header.is-scrolled{
  background:rgba(5,10,18,.72);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  width:100%;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:2px;
  font-size:1.125rem;
  font-weight:700;
  color:var(--t1);
  letter-spacing:.01em;
  white-space:nowrap;
}
.logo span{font-weight:400;color:var(--t2);}
.logo:hover{color:var(--t1);}
.logo-dot{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--brand);
  margin-left:8px;
  box-shadow:0 0 10px rgba(34,225,180,.8);
  display:inline-block;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:32px;
}
.nav-link{
  position:relative;
  font-size:.9375rem;
  letter-spacing:.02em;
  color:var(--t2);
  padding:6px 2px;
  transition:color .2s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;bottom:0;
  width:0;height:1px;
  background:var(--brand);
  transform:translateX(-50%);
  transition:width .2s ease;
}
.nav-link:hover{color:var(--t1);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{
  color:var(--brand);
  background:rgba(34,225,180,.12);
  border-radius:var(--r-pill);
  padding:6px 14px;
}
.nav-link.is-active::after{display:none;}
.nav-actions{display:flex;align-items:center;gap:16px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:12px;
  background:rgba(255,255,255,.03);
  cursor:pointer;
  padding:0;
  position:relative;
}
.nav-toggle span{
  position:absolute;
  left:11px;right:11px;
  height:1.5px;
  background:var(--t1);
  border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span:nth-child(1){top:15px;}
.nav-toggle span:nth-child(2){top:20.5px;}
.nav-toggle span:nth-child(3){top:26px;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  border-radius:var(--r-pill);
  font-size:.9375rem;
  font-weight:700;
  padding:14px 28px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,filter .2s ease,color .2s ease;
  text-align:center;
  line-height:1.2;
}
.btn-primary{
  background:linear-gradient(100deg,var(--brand) 0%,var(--brand-2) 100%);
  color:#04121C;
  box-shadow:0 10px 26px -12px rgba(34,225,180,.7);
}
.btn-primary:hover{
  color:#04121C;
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:var(--glow);
}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh1);}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--brand);
}
.btn-ghost:hover{
  color:var(--brand);
  background:rgba(34,225,180,.10);
  border-color:rgba(34,225,180,.42);
  transform:translateY(-2px);
}
.btn-sm{padding:10px 20px;font-size:.875rem;}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(34,225,180,.5);}
.btn[disabled]{opacity:.45;filter:grayscale(.3);box-shadow:none;cursor:not-allowed;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.9375rem;
  font-weight:600;
  color:var(--brand);
}
.link-arrow i{
  font-style:normal;
  transition:transform .2s ease;
}
.link-arrow:hover i{transform:translateX(6px);}

/* ---------- tags ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.75rem;
  letter-spacing:.12em;
  line-height:1;
  padding:7px 10px;
  border-radius:var(--r-tag);
  border:1px solid var(--line);
  color:var(--t2);
  text-transform:uppercase;
}
.tag-brand{color:var(--brand);border-color:rgba(34,225,180,.32);background:rgba(34,225,180,.10);}
.tag-hot{color:var(--accent);border-color:rgba(255,90,46,.32);background:rgba(255,90,46,.10);}
.tag-rank{color:var(--amber);border-color:rgba(255,194,75,.32);background:rgba(255,194,75,.10);}

/* ---------- page head ---------- */
.page-main{padding-top:var(--head-h);}
.page-head{
  position:relative;
  padding:56px 0 40px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-head::before{
  content:"";
  position:absolute;
  top:-160px;right:-80px;
  width:520px;height:520px;
  background:radial-gradient(circle,rgba(34,225,180,.12),rgba(34,225,180,0) 66%);
  pointer-events:none;
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:.8125rem;
  color:var(--t3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--t3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span{color:var(--t2);}
.page-head h1{
  font-size:clamp(1.75rem,3.1vw,2.5rem);
  line-height:1.25;
  margin:16px 0 14px;
  max-width:20em;
}
.page-lead{
  font-size:1.0625rem;
  line-height:1.8;
  color:var(--t2);
  max-width:46em;
}
.head-facts{
  display:flex;
  flex-wrap:wrap;
  gap:0 48px;
  margin-top:30px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.head-facts li{
  display:flex;
  align-items:baseline;
  gap:10px;
  font-size:.875rem;
  color:var(--t3);
}
.head-facts b{
  font-family:"Inter",sans-serif;
  font-variant-numeric:tabular-nums;
  font-weight:800;
  font-size:1.375rem;
  letter-spacing:-.02em;
  color:var(--brand);
}

/* ---------- layout ---------- */
.content-shell{
  display:grid;
  grid-template-columns:228px minmax(0,1fr);
  gap:64px;
  align-items:start;
  padding:64px 0 96px;
}
.aside-nav{
  position:sticky;
  top:calc(var(--head-h) + 28px);
}
.aside-title{
  font-size:.75rem;
  letter-spacing:.12em;
  color:var(--t3);
  margin-bottom:16px;
  text-transform:uppercase;
}
.aside-list{display:flex;flex-direction:column;}
.aside-link{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 0;
  font-size:.9375rem;
  color:var(--t2);
  border-bottom:1px solid transparent;
  transition:color .2s ease,transform .2s ease;
}
.aside-link::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--brand);
  opacity:0;
  transform:scale(.4);
  transition:opacity .2s ease,transform .2s ease;
  flex:none;
}
.aside-link:hover{color:var(--t1);transform:translateX(2px);}
.aside-link.is-active{color:var(--brand);}
.aside-link.is-active::before{opacity:1;transform:scale(1);}
.aside-note{
  margin-top:28px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:.8125rem;
  line-height:1.75;
  color:var(--t3);
}
.aside-note a{font-weight:600;}

/* ---------- specs ---------- */
.spec-group{
  padding-bottom:56px;
  margin-bottom:56px;
  border-bottom:1px solid var(--line);
  scroll-margin-top:calc(var(--head-h) + 32px);
}
.spec-group:last-of-type{border-bottom:none;margin-bottom:0;padding-bottom:24px;}
.spec-head{display:flex;align-items:flex-start;gap:18px;margin-bottom:10px;}
.spec-index{
  font-family:"Inter",sans-serif;
  font-weight:800;
  font-size:.8125rem;
  color:var(--brand);
  letter-spacing:.08em;
  padding-top:8px;
  flex:none;
}
.spec-head h2{
  font-size:clamp(1.375rem,2.1vw,1.75rem);
  line-height:1.3;
  position:relative;
  padding-left:16px;
}
.spec-head h2::before{
  content:"";
  position:absolute;
  left:0;top:.32em;
  width:4px;height:1em;
  border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.spec-intro{
  font-size:.9375rem;
  color:var(--t2);
  margin:0 0 26px 34px;
  max-width:52em;
}
.spec-row{
  display:grid;
  grid-template-columns:192px minmax(0,1fr) 108px;
  gap:24px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.spec-row:first-of-type{border-top:1px solid var(--line);}
.spec-row:hover{background:rgba(255,255,255,.03);}
.spec-key{
  font-size:.75rem;
  letter-spacing:.12em;
  line-height:1.7;
  color:var(--brand);
  padding-top:3px;
}
.spec-val{
  font-size:.9375rem;
  line-height:1.8;
  color:var(--t2);
}
.spec-val strong{color:var(--t1);font-weight:700;}
.spec-val em{
  font-style:normal;
  color:var(--amber);
  font-family:"Inter",sans-serif;
  font-variant-numeric:tabular-nums;
  font-weight:800;
}
.spec-meta{
  font-size:.75rem;
  letter-spacing:.06em;
  color:var(--t3);
  text-align:right;
  font-family:"Inter",sans-serif;
  font-variant-numeric:tabular-nums;
  padding-top:4px;
}
.spec-figure{
  margin:32px 0 0;
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh2);
}
.spec-figure img{width:100%;height:260px;object-fit:cover;border:none;border-radius:0;}
.spec-figure::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:60%;
  background:linear-gradient(to top,rgba(5,10,18,.92),rgba(5,10,18,0));
  pointer-events:none;
}
.spec-figure figcaption{
  position:absolute;
  left:24px;right:24px;bottom:20px;
  font-size:.875rem;
  color:var(--t2);
  z-index:2;
}
.spec-figure figcaption b{color:var(--brand);font-weight:700;}

/* ---------- strip ---------- */
.strip{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0 32px;
  margin:8px 0 56px;
  padding:26px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.strip-item{border-left:1px solid var(--line);padding-left:22px;}
.strip-item:first-child{border-left:none;padding-left:0;}
.strip-item b{
  display:block;
  font-family:"Inter",sans-serif;
  font-variant-numeric:tabular-nums;
  font-weight:800;
  font-size:1.875rem;
  letter-spacing:-.02em;
  color:var(--t1);
  line-height:1.1;
}
.strip-item span{font-size:.8125rem;color:var(--t3);letter-spacing:.04em;}

/* ---------- FAQ ---------- */
.faq-section{padding:80px 0 24px;border-top:1px solid var(--line);}
.section-head{max-width:44em;margin-bottom:32px;}
.section-head h2{
  font-size:clamp(1.5rem,2.4vw,2.125rem);
  line-height:1.25;
  margin:14px 0 12px;
}
.section-head p{font-size:.9375rem;color:var(--t2);}
.faq-list{border-top:1px solid var(--line);}
.faq-item{
  position:relative;
  border-bottom:1px solid var(--line);
}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:0;
  width:2px;height:0;
  background:var(--brand);
  transition:height .2s ease;
}
.faq-item.is-open::before{height:100%;}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  background:none;
  border:0;
  padding:22px 4px;
  cursor:pointer;
  text-align:left;
  font-size:1rem;
  font-weight:600;
  color:var(--t1);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-q:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(34,225,180,.45);border-radius:8px;}
.faq-icon{
  flex:none;
  width:22px;height:22px;
  position:relative;
  transition:transform .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
}
.faq-icon::before{left:0;right:0;top:10px;height:1.5px;}
.faq-icon::after{top:0;bottom:0;left:10px;width:1.5px;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 56px 24px 4px;
  font-size:1rem;
  line-height:1.8;
  color:var(--t2);
}

/* ---------- CTA ---------- */
.cta-panel{
  margin:72px 0 0;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,.9fr);
  gap:48px;
  align-items:center;
  padding:48px;
  border-radius:24px;
  background:linear-gradient(140deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh3);
  position:relative;
  overflow:hidden;
}
.cta-panel::after{
  content:"";
  position:absolute;
  right:-120px;bottom:-160px;
  width:420px;height:420px;
  background:radial-gradient(circle,rgba(18,184,255,.14),rgba(18,184,255,0) 66%);
  pointer-events:none;
}
.cta-panel h2{
  font-size:clamp(1.375rem,2.2vw,1.875rem);
  line-height:1.3;
  margin-bottom:14px;
}
.cta-panel p{font-size:.9375rem;color:var(--t2);max-width:32em;}
.sub-form{display:flex;gap:12px;position:relative;z-index:2;}
.sub-form input{
  flex:1;
  min-width:0;
  height:52px;
  padding:0 18px;
  border-radius:var(--r-input);
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);
  color:var(--t1);
  font-size:.9375rem;
  font-family:inherit;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.sub-form input::placeholder{color:var(--t3);}
.sub-form input:focus{
  outline:none;
  border-color:rgba(34,225,180,.6);
  box-shadow:0 0 0 4px rgba(34,225,180,.16);
}
.sub-form input.is-error{
  border-color:var(--accent);
  box-shadow:0 0 0 4px rgba(255,90,46,.14);
}
.form-error{
  display:block;
  min-height:18px;
  margin-top:10px;
  font-size:.75rem;
  letter-spacing:.02em;
  color:var(--accent);
}
.form-ok{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:.9375rem;
  color:var(--brand);
  padding:16px 18px;
  border-radius:var(--r-input);
  border:1px solid rgba(34,225,180,.32);
  background:rgba(34,225,180,.08);
}
.form-ok::before{
  content:"";
  width:8px;height:8px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px rgba(34,225,180,.9);
  flex:none;
}

/* ---------- footer ---------- */
.site-footer{
  background:#03070D;
  border-top:1px solid var(--line);
  padding:64px 0 32px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:0;
}
.footer-col{padding:0 32px;}
.footer-col:first-child{padding-left:0;}
.footer-col:last-child{padding-right:0;}
.footer-col + .footer-col{border-left:1px solid var(--line);}
.footer-brand{
  display:inline-flex;
  align-items:center;
  font-size:1.0625rem;
  font-weight:700;
  color:var(--t1);
  margin-bottom:14px;
}
.footer-brand span{font-weight:400;color:var(--t2);}
.footer-col p{font-size:.875rem;line-height:1.75;color:var(--t3);max-width:26em;}
.footer-col h4{
  font-size:.8125rem;
  letter-spacing:.12em;
  color:var(--t3);
  font-weight:600;
  margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col ul a{
  font-size:.875rem;
  color:var(--t3);
  transition:color .2s ease,transform .2s ease;
  display:inline-block;
}
.footer-col ul a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  font-size:.8125rem;
  color:var(--t3);
}
.footer-bottom nav{display:flex;gap:24px;flex-wrap:wrap;}
.footer-bottom nav a{color:var(--t3);font-size:.8125rem;}
.footer-bottom nav a:hover{color:var(--brand);}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .content-shell{grid-template-columns:200px minmax(0,1fr);gap:44px;}
  .spec-row{grid-template-columns:168px minmax(0,1fr) 92px;gap:20px;}
}
@media (max-width:991px){
  :root{--head-h:60px;}
  .container{padding:0 24px;}
  .nav-toggle{display:block;}
  .nav-links{
    position:fixed;
    inset:0;
    flex-direction:column;
    align-items:flex-start;
    justify-content:center;
    gap:8px;
    padding:80px 32px 40px;
    background:rgba(5,10,18,.94);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    transform:translateY(-12px);
    opacity:0;
    pointer-events:none;
    transition:opacity .24s ease,transform .24s ease;
    z-index:55;
  }
  .nav-links.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .nav-link{
    font-size:1.5rem;
    font-weight:600;
    padding:12px 0;
    opacity:0;
    transform:translateY(10px);
  }
  .nav-links.is-open .nav-link{animation:navIn .4s ease forwards;}
  .nav-links.is-open .nav-link:nth-child(1){animation-delay:.04s;}
  .nav-links.is-open .nav-link:nth-child(2){animation-delay:.08s;}
  .nav-links.is-open .nav-link:nth-child(3){animation-delay:.12s;}
  .nav-links.is-open .nav-link:nth-child(4){animation-delay:.16s;}
  .nav-link.is-active{padding:12px 16px;}
  .nav-actions .btn{display:none;}
  @keyframes navIn{to{opacity:1;transform:translateY(0);}}
  .content-shell{grid-template-columns:1fr;gap:32px;padding:40px 0 72px;}
  .aside-nav{position:static;top:auto;}
  .aside-title{margin-bottom:10px;}
  .aside-list{flex-direction:row;overflow-x:auto;gap:10px;padding-bottom:6px;scrollbar-width:none;}
  .aside-list::-webkit-scrollbar{display:none;}
  .aside-link{
    white-space:nowrap;
    padding:8px 14px;
    border:1px solid var(--line);
    border-radius:var(--r-pill);
    font-size:.875rem;
  }
  .aside-link.is-active{border-color:rgba(34,225,180,.4);background:rgba(34,225,180,.10);}
  .aside-note{display:none;}
  .spec-intro{margin-left:0;}
  .cta-panel{grid-template-columns:1fr;gap:28px;padding:36px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 0;}
  .footer-col{padding:0 24px;}
  .footer-col:nth-child(odd){padding-left:0;border-left:none;}
  .footer-col:nth-child(even){padding-right:0;}
}
@media (max-width:767px){
  .page-head{padding:36px 0 28px;}
  .head-facts{gap:0 32px;margin-top:22px;}
  .head-facts b{font-size:1.25rem;}
  .content-shell{padding:32px 0 56px;}
  .spec-row{grid-template-columns:1fr;gap:8px;padding:16px 0;}
  .spec-meta{text-align:left;padding-top:0;}
  .spec-key{font-size:.6875rem;}
  .spec-group{padding-bottom:36px;margin-bottom:36px;}
  .spec-figure img{height:200px;}
  .strip{grid-template-columns:1fr;gap:0;}
  .strip-item{border-left:none;padding-left:0;padding:14px 0;border-top:1px solid var(--line);}
  .strip-item:first-child{border-top:none;padding-top:0;}
  .faq-a p{padding-right:8px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-col{padding:0;border-left:none !important;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px;}
}
@media (max-width:575px){
  .container{padding:0 20px;}
  .logo{font-size:1rem;}
  .page-head h1{font-size:1.5rem;}
  .page-lead{font-size:.9375rem;}
  .sub-form{flex-direction:column;}
  .sub-form .btn{width:100%;}
  .cta-panel{padding:28px 20px;}
  .head-facts{flex-direction:column;gap:12px;}
  .spec-head{gap:12px;}
}