/* roulang page: index */
:root{
  --bg-0:#060B14;
  --bg-1:#0B131F;
  --bg-2:#101B2B;
  --primary:#25D6C4;
  --primary-dark:#12A79A;
  --primary-light:#6FF0E4;
  --secondary:#6E7BFF;
  --amber:#FFC46B;
  --text:#EAF2F8;
  --text-2:#9FB0C4;
  --text-3:#6C7E94;
  --glass:rgba(255,255,255,.04);
  --glass-2:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --r-xl:20px;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --r-pill:999px;
  --shadow:0 24px 48px rgba(0,0,0,.45);
  --shadow-inset:inset 0 1px 0 rgba(255,255,255,.06);
  --glow:0 0 32px rgba(37,214,196,.22);
  --ease:cubic-bezier(.22,1,.36,1);
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:40px; --sp-6:56px; --sp-7:84px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:1rem;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body,h1,h2,h3,h4,p,ul,ol,li,figure,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .25s var(--ease),text-decoration-color .25s var(--ease)}
a:hover{color:var(--primary-light);text-decoration:underline;text-underline-offset:4px}
button,input{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{font-weight:600;line-height:1.3;letter-spacing:.02em;color:var(--text)}
h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:700;line-height:1.25}
h2{font-size:clamp(1.5rem,3vw,2.25rem)}
h3{font-size:1.25rem}
p{color:var(--text-2)}
strong{color:var(--text)}
::selection{background:rgba(37,214,196,.3);color:#fff}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.grid-container{max-width:1240px;padding-left:24px;padding-right:24px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
main{display:block}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,11,20,.76);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{background:rgba(6,11,20,.94);box-shadow:0 12px 32px rgba(0,0,0,.4)}
.nav-inner{display:flex;align-items:center;gap:24px;height:78px;transition:height .3s var(--ease)}
.site-header.is-scrolled .nav-inner{height:66px}
.brand{display:flex;flex-direction:column;justify-content:center;gap:2px;flex:0 0 auto;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-main{font-size:1.28rem;font-weight:700;letter-spacing:.02em;color:var(--text);line-height:1.05}
.brand-main em{font-style:normal;color:var(--primary)}
.brand-sub{font-size:.78rem;letter-spacing:.34em;color:var(--text-3);line-height:1.05}
.nav-links{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:center}
.nav-links a{
  position:relative;display:block;padding:10px 14px;border-radius:var(--r-sm);
  color:var(--text-2);font-size:.94rem;white-space:nowrap;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-links a:hover{color:var(--text);background:var(--glass);text-decoration:none}
.nav-links a.active{color:var(--text)}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),rgba(37,214,196,0));
}
.nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.cmd-search{
  display:flex;align-items:center;gap:8px;width:220px;padding:8px 12px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-pill);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),width .25s var(--ease);
}
.cmd-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,214,196,.14)}
.cmd-search i{color:var(--text-3);font-size:.85rem}
.cmd-search input{
  flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;
  color:var(--text);font-size:.875rem;
}
.cmd-search input::placeholder{color:var(--text-3)}
.cmd-kbd{
  font-size:.7rem;color:var(--text-3);border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;letter-spacing:.04em;background:rgba(255,255,255,.03);
}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-pill);display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--glass);color:var(--text-2);
  transition:color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:rgba(37,214,196,.5);transform:translateY(-2px)}
.nav-toggle{display:none}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  padding:13px 26px;border-radius:var(--r-pill);font-size:.94rem;font-weight:600;
  border:1px solid transparent;transition:all .26s var(--ease);white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);
  color:#04121A;box-shadow:0 12px 28px rgba(37,214,196,.24);
}
.btn-primary:hover{
  color:#04121A;text-decoration:none;transform:translateY(-2px);
  filter:brightness(1.08);box-shadow:0 16px 34px rgba(37,214,196,.32),var(--glow);
}
.btn-ghost{
  background:var(--glass);border-color:var(--line-strong);color:var(--text);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary-light);text-decoration:none;transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:.875rem;border-radius:var(--r-md)}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:.92rem}
.btn-text i{transition:transform .25s var(--ease)}
.btn-text:hover{text-decoration:none;color:var(--primary-light)}
.btn-text:hover i{transform:translateX(4px)}

/* ============ section basics ============ */
.section{padding:var(--sp-7) 0;position:relative}
.section-alt{background:var(--bg-1)}
.section-deep{background:linear-gradient(180deg,var(--bg-0) 0%,var(--bg-1) 100%)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:var(--sp-6)}
.section-head h2{margin-top:10px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:600;letter-spacing:.16em;
  color:var(--primary);text-transform:none;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,rgba(37,214,196,0),var(--primary))}
.lead-text{max-width:680px;font-size:1.0625rem}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:.92rem;font-weight:600;color:var(--primary)}
.link-more:hover{text-decoration:none;color:var(--primary-light)}
.link-more i{transition:transform .25s var(--ease)}
.link-more:hover i{transform:translateX(4px)}

/* ============ glass card ============ */
.glass{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow),var(--shadow-inset);
  overflow:hidden;
}
.glass::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(37,214,196,.35),rgba(37,214,196,0));
}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);
  font-size:.76rem;font-weight:600;letter-spacing:.04em;
  color:var(--primary-light);background:rgba(37,214,196,.1);border:1px solid rgba(37,214,196,.24);
}
.badge-violet{color:#B9C0FF;background:rgba(110,123,255,.12);border-color:rgba(110,123,255,.28)}
.badge-amber{color:var(--amber);background:rgba(255,196,107,.1);border-color:rgba(255,196,107,.26)}
.meta-line{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:.8125rem;color:var(--text-3)}
.meta-line .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3)}
.meta-line .time{color:var(--amber)}

/* ============ hero ============ */
.hero{
  position:relative;padding:76px 0 64px;overflow:hidden;
  background:var(--bg-0);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(90deg,rgba(6,11,20,.96) 0%,rgba(6,11,20,.72) 52%,rgba(6,11,20,.92) 100%),url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;
  opacity:.9;
}
.hero::after{
  content:"";position:absolute;left:-180px;top:-160px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,214,196,.18),rgba(37,214,196,0) 68%);
  pointer-events:none;
}
.hero .grid-container{position:relative;z-index:2}
.hero-title{margin:16px 0 18px}
.hero-sub{font-size:1.0625rem;color:var(--text);font-weight:600;margin-bottom:14px}
.hero-desc{max-width:600px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-visual{position:relative;padding-left:24px}
.hero-frame{
  border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--line-strong);
  box-shadow:var(--shadow),var(--shadow-inset);
}
.hero-frame img{width:100%;aspect-ratio:16/11;object-fit:cover}
.float-card{
  position:absolute;left:-6px;top:34px;display:flex;align-items:baseline;gap:6px;
  padding:14px 20px;border-radius:var(--r-lg);background:rgba(16,27,43,.86);
  border:1px solid var(--line-strong);box-shadow:var(--shadow);backdrop-filter:blur(14px);
}
.float-card .float-label{display:block;font-size:.75rem;color:var(--text-3);margin-right:6px}
.float-card strong{font-size:1.5rem;color:var(--primary);line-height:1;letter-spacing:.02em}
.float-card span{font-size:.8rem;color:var(--text-2)}
.float-card-2{
  left:auto;right:-8px;top:auto;bottom:26px;align-items:center;
  font-size:.82rem;color:var(--text-2);padding:12px 18px;
}
.float-card-2 .dot{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 5px rgba(37,214,196,.16)}
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:56px;
  border-top:1px solid var(--line);
}
.metric{padding:24px 24px 4px 0}
.metric strong{display:block;font-size:1.55rem;color:var(--primary);letter-spacing:.02em;line-height:1.2}
.metric span{font-size:.85rem;color:var(--text-3)}

/* ============ story ============ */
.story-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.story-aside h3{font-size:1.05rem;color:var(--text);margin-bottom:14px}
.story-aside p{margin-bottom:18px}
.story-aside .quote{
  padding:20px 22px;border-radius:var(--r-lg);background:var(--glass);
  border:1px solid var(--line);border-left:3px solid var(--primary);
  color:var(--text-2);font-size:.94rem;
}
.timeline{display:grid;gap:28px;position:relative;padding-left:4px}
.tl-item{display:grid;grid-template-columns:32px 1fr;gap:20px;position:relative}
.tl-item::before{
  content:"";position:absolute;left:15px;top:26px;bottom:-28px;width:1px;
  background:linear-gradient(180deg,rgba(37,214,196,.55),rgba(37,214,196,.05));
}
.tl-item:last-child::before{display:none}
.tl-dot{
  width:14px;height:14px;border-radius:50%;margin-top:8px;justify-self:center;
  background:var(--primary);box-shadow:0 0 0 6px rgba(37,214,196,.12);
}
.tl-body h3{font-size:1.125rem;margin-bottom:6px}
.tl-body p{font-size:.95rem}
.tl-body .tl-tag{font-size:.75rem;color:var(--amber);letter-spacing:.08em}

/* ============ collage ============ */
.collage{display:grid;grid-template-columns:1.6fr 1fr;gap:24px}
.collage-main{display:flex;flex-direction:column;overflow:hidden}
.collage-main .thumb{overflow:hidden}
.collage-main img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s var(--ease)}
.collage-main:hover img{transform:scale(1.03)}
.collage-body{padding:26px 28px 30px}
.collage-body h3{font-size:1.4rem;margin:12px 0 10px}
.collage-body p{font-size:.95rem}
.collage-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.mini-card{display:flex;gap:18px;padding:20px;align-items:center;transition:transform .3s var(--ease),border-color .3s var(--ease)}
.mini-card:hover{transform:translateY(-2px);border-color:rgba(37,214,196,.34)}
.mini-card img{
  width:104px;height:104px;flex:0 0 104px;object-fit:cover;border-radius:var(--r-md);
}
.mini-card h3{font-size:1.06rem;margin-bottom:6px}
.mini-card p{font-size:.875rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.collage-wide{
  grid-column:1 / -1;display:grid;grid-template-columns:280px 1fr auto;gap:26px;align-items:center;
  padding:20px 26px 20px 20px;
}
.collage-wide img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-md)}
.collage-wide h3{font-size:1.1rem;margin-bottom:6px}
.collage-wide p{font-size:.9rem}
.collage-wide .arrow{color:var(--primary);font-size:1.1rem;transition:transform .25s var(--ease)}
.collage-wide:hover .arrow{transform:translateX(6px)}

/* ============ news / cms ============ */
.news-lead{
  display:grid;grid-template-columns:1.05fr 1fr;overflow:hidden;
  transition:transform .3s var(--ease),border-color .3s var(--ease);
}
.news-lead:hover{transform:translateY(-2px);border-color:rgba(37,214,196,.3)}
.news-lead-media{display:block;overflow:hidden}
.news-lead-media img{width:100%;height:100%;min-height:280px;object-fit:cover;transition:transform .55s var(--ease)}
.news-lead:hover .news-lead-media img{transform:scale(1.03)}
.news-lead-body{padding:32px 34px;display:flex;flex-direction:column;justify-content:center;gap:14px}
.news-lead-body h3{font-size:1.35rem}
.news-lead-body h3 a{color:var(--text)}
.news-lead-body h3 a:hover{color:var(--primary-light);text-decoration:none}
.news-lead-body p{font-size:.95rem;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-rows{display:grid;gap:12px;margin-top:24px}
.news-row{
  display:grid;grid-template-columns:132px 1fr auto;gap:24px;align-items:center;
  padding:14px 22px 14px 14px;border-radius:var(--r-lg);
  transition:transform .28s var(--ease),border-color .28s var(--ease);
}
.news-row:hover{transform:translateY(-2px);border-color:rgba(37,214,196,.3)}
.news-row img{width:132px;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-md)}
.news-row h3{font-size:1.02rem;margin-bottom:6px}
.news-row h3 a{color:var(--text)}
.news-row h3 a:hover{color:var(--primary-light);text-decoration:none}
.news-row p{font-size:.875rem;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.news-row .go{color:var(--text-3);transition:color .25s var(--ease),transform .25s var(--ease)}
.news-row:hover .go{color:var(--primary);transform:translateX(4px)}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;
  padding:64px 32px;border-radius:var(--r-xl);background:var(--glass);border:1px dashed var(--line-strong);
}
.empty-state i{font-size:1.7rem;color:var(--text-3)}
.empty-state p{color:var(--text-2);font-size:.95rem}

/* ============ trust ============ */
.trust-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.stat-list{display:grid;gap:0}
.stat-item{padding:26px 0;border-bottom:1px solid var(--line)}
.stat-item:first-child{padding-top:0}
.stat-item strong{display:block;font-size:2rem;color:var(--primary);line-height:1.15;letter-spacing:.02em}
.stat-item span{font-size:.925rem;color:var(--text-2)}
.badge-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.wall-cell{
  padding:24px 18px;border-radius:var(--r-lg);background:rgba(255,255,255,.03);
  border:1px solid var(--line);text-align:center;color:var(--text-2);font-size:.9rem;
  transition:border-color .28s var(--ease),color .28s var(--ease),transform .28s var(--ease);
}
.wall-cell i{display:block;font-size:1.1rem;color:var(--text-3);margin-bottom:10px;transition:color .28s var(--ease)}
.wall-cell:hover{border-color:rgba(37,214,196,.34);color:var(--text);transform:translateY(-2px)}
.wall-cell:hover i{color:var(--primary)}

/* ============ faq ============ */
.faq-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px 40px}
.accordion.faq-acc{border:0;background:transparent;list-style:none;margin:0}
.faq-acc .accordion-item{
  border:1px solid var(--line);border-radius:var(--r-lg);background:var(--glass);
  margin-bottom:14px;overflow:hidden;transition:border-color .28s var(--ease);
}
.faq-acc .accordion-item.is-active{border-color:rgba(37,214,196,.34)}
.faq-acc .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;font-size:1.02rem;font-weight:600;color:var(--text);
  background:transparent;border:0;line-height:1.5;
}
.faq-acc .accordion-title:hover{background:rgba(255,255,255,.03);color:var(--text)}
.faq-acc .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:.75rem;
  order:2;flex:0 0 30px;width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;border:1px solid var(--line-strong);color:var(--primary);
  transition:transform .28s var(--ease),background .28s var(--ease);
}
.faq-acc .accordion-title[aria-expanded="true"]::before{transform:rotate(45deg);background:rgba(37,214,196,.12)}
.faq-acc .accordion-content{padding:0 22px 22px;border:0;background:transparent}
.faq-acc .accordion-content p{font-size:.94rem;margin:0}
.faq-side .glass{padding:28px;position:sticky;top:104px}
.faq-side img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-md);margin-bottom:20px}
.faq-side h3{font-size:1.15rem;margin-bottom:12px}
.faq-side ul{display:grid;gap:12px;margin-bottom:22px}
.faq-side li{display:flex;gap:10px;font-size:.9rem;color:var(--text-2)}
.faq-side li i{color:var(--primary);margin-top:6px;font-size:.75rem}

/* ============ cta ============ */
.cta-banner{
  display:grid;grid-template-columns:1.15fr 1fr;gap:40px;align-items:center;
  padding:44px 46px;border-radius:var(--r-xl);
  background:linear-gradient(135deg,rgba(37,214,196,.1),rgba(110,123,255,.08));
  border:1px solid var(--line-strong);box-shadow:var(--shadow),var(--shadow-inset);
  position:relative;overflow:hidden;
}
.cta-banner::after{
  content:"";position:absolute;right:-120px;bottom:-140px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,214,196,.16),rgba(37,214,196,0) 70%);
}
.cta-banner h2{margin-bottom:12px;font-size:clamp(1.4rem,2.6vw,1.9rem)}
.cta-banner p{font-size:.95rem;position:relative;z-index:2}
.subscribe-form{display:flex;gap:12px;position:relative;z-index:2}
.subscribe-form input{
  flex:1 1 auto;min-width:0;padding:14px 18px;border-radius:var(--r-md);
  background:rgba(6,11,20,.6);border:1px solid var(--line-strong);color:var(--text);outline:none;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.subscribe-form input::placeholder{color:var(--text-3)}
.subscribe-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,214,196,.14)}
.form-hint{font-size:.8125rem;color:var(--text-3);margin-top:12px;position:relative;z-index:2}

/* ============ footer ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 0;position:relative;overflow:hidden}
.site-footer::before{
  content:"";position:absolute;left:-140px;bottom:-180px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,214,196,.08),rgba(37,214,196,0) 70%);pointer-events:none;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;position:relative;z-index:2}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:.9rem;color:var(--text-3);max-width:300px}
.footer-col h4{font-size:.95rem;margin-bottom:18px;color:var(--text)}
.footer-col ul{display:grid;gap:12px}
.footer-col a{font-size:.9rem;color:var(--text-2)}
.footer-col a:hover{color:var(--primary);text-decoration:none}
.footer-note{font-size:.9rem;color:var(--text-3);margin-bottom:16px}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:.8125rem;color:var(--text-3);position:relative;z-index:2;
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary);text-decoration:none}

/* ============ off-canvas mobile nav ============ */
.off-canvas{background:var(--bg-1);border-left:1px solid var(--line)}
.m-nav{padding:26px 22px}
.m-nav .brand{margin-bottom:26px}
.m-nav ul{display:grid;gap:6px;margin-bottom:26px}
.m-nav a{
  display:block;padding:12px 14px;border-radius:var(--r-md);color:var(--text-2);font-size:.95rem;
}
.m-nav a:hover{background:var(--glass);color:var(--text);text-decoration:none}
.m-nav a.active{background:rgba(37,214,196,.1);color:var(--primary-light)}
.m-nav .btn{width:100%;margin-bottom:12px}
.m-search{width:100%;margin-bottom:22px}
.close-button{color:var(--text-2)}

/* ============ reveal ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* ============ responsive ============ */
@media screen and (max-width:1024px){
  .nav-links{display:none}
  .cmd-search{display:none}
  .nav-toggle{display:inline-flex}
  .nav-inner{justify-content:space-between;height:70px}
  .hero{padding:56px 0 48px}
  .hero-visual{padding-left:0;margin-top:44px}
  .float-card{left:8px}
  .float-card-2{right:8px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .story-grid,.trust-grid{grid-template-columns:1fr;gap:40px}
  .collage{grid-template-columns:1fr}
  .collage-side{grid-template-rows:auto;grid-template-columns:1fr 1fr}
  .collage-wide{grid-template-columns:220px 1fr auto}
  .news-lead{grid-template-columns:1fr}
  .news-lead-media img{min-height:220px}
  .faq-wrap{grid-template-columns:1fr}
  .faq-side .glass{position:static}
  .cta-banner{grid-template-columns:1fr;padding:36px 30px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:64px 0}
}
@media screen and (max-width:640px){
  .grid-container{padding-left:20px;padding-right:20px}
  .container{padding:0 20px}
  h1{font-size:clamp(1.75rem,7vw,2.25rem)}
  .brand-main{font-size:1.1rem}
  .brand-sub{font-size:.7rem;letter-spacing:.28em}
  .hero{padding:44px 0 40px}
  .metrics{grid-template-columns:1fr;gap:0}
  .metric{padding:18px 0 14px;border-bottom:1px solid var(--line)}
  .metric:last-child{border-bottom:0}
  .collage-side{grid-template-columns:1fr}
  .mini-card{flex-direction:column;align-items:flex-start}
  .mini-card img{width:100%;height:auto;flex:none;aspect-ratio:16/9}
  .collage-wide{grid-template-columns:1fr;padding:18px}
  .news-row{grid-template-columns:1fr;gap:14px;padding:18px}
  .news-row img{width:100%}
  .news-row .go{display:none}
  .badge-wall{grid-template-columns:1fr 1fr}
  .subscribe-form{flex-direction:column}
  .subscribe-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px}
  .section{padding:52px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:36px}
  .float-card,.float-card-2{position:static;display:inline-flex;margin:14px 8px 0 0}
}
@media screen and (max-width:375px){
  .btn{padding:12px 20px;font-size:.9rem}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
}

/* roulang page: article */
:root{
  --bg:#060B14;
  --bg-alt:#0B131F;
  --panel:#101B2B;
  --glass:rgba(255,255,255,.04);
  --glass-strong:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(255,255,255,.05);
  --teal:#25D6C4;
  --teal-deep:#12A79A;
  --teal-light:#6FF0E4;
  --violet:#6E7BFF;
  --amber:#FFC46B;
  --text:#EAF2F8;
  --text-2:#9FB0C4;
  --text-3:#6C7E94;
  --r-xl:20px;
  --r-lg:16px;
  --r-md:12px;
  --r-img:14px;
  --shadow:0 24px 48px rgba(0,0,0,.45);
  --glow:0 0 32px rgba(37,214,196,.22);
  --container:1240px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --font-num:"Inter","SF Mono",ui-monospace,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{margin:0;padding:0;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border-style:none;}
a{color:var(--teal);text-decoration:none;transition:color .24s ease,border-color .24s ease;}
a:hover{color:var(--teal-light);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5{margin:0;font-weight:600;line-height:1.3;letter-spacing:.02em;color:var(--text);}
p{margin:0;}
::selection{background:rgba(37,214,196,.28);color:#fff;}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:6px;}

.bg-glow{
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(920px 620px at 10% -8%, rgba(37,214,196,.14), transparent 62%),
    radial-gradient(780px 540px at 92% 2%, rgba(110,123,255,.12), transparent 60%),
    radial-gradient(680px 480px at 50% 108%, rgba(18,167,154,.10), transparent 65%);
}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
@media(max-width:640px){.container{padding:0 20px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(6,11,20,.74);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line-soft);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
  background:rgba(6,11,20,.92);
  box-shadow:0 18px 40px rgba(0,0,0,.5);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:78px;
  transition:height .3s cubic-bezier(.22,1,.36,1);
}
.site-header.scrolled .header-inner{height:66px;}
.brand{
  display:flex;
  align-items:baseline;
  gap:8px;
  flex-shrink:0;
  color:var(--text);
}
.brand:hover{color:var(--text);}
.brand-main{
  font-size:1.375rem;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1;
  background:linear-gradient(100deg,#FFFFFF 12%,var(--teal-light) 92%);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.brand-main em{font-style:normal;color:var(--teal);-webkit-text-fill-color:var(--teal);}
.brand-sub{
  font-size:.85rem;
  font-weight:500;
  letter-spacing:.02em;
  color:var(--text-3);
  line-height:1;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:12px;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-size:.9375rem;
  font-weight:500;
  color:var(--text-2);
  border-radius:10px;
  transition:color .22s ease,background .22s ease;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--teal),var(--violet));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .28s cubic-bezier(.22,1,.36,1);
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--text);}
.nav-links a.active::after{transform:scaleX(1);}
.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.cmd-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:238px;
  height:42px;
  padding:0 10px 0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  transition:border-color .24s ease,box-shadow .24s ease,background .24s ease;
}
.cmd-search i{color:var(--text-3);font-size:.875rem;}
.cmd-search input{
  flex:1;
  min-width:0;
  border:none;
  outline:none;
  background:transparent;
  font-size:.875rem;
  color:var(--text);
}
.cmd-search input::placeholder{color:var(--text-3);}
.cmd-search:focus-within{
  border-color:rgba(37,214,196,.55);
  box-shadow:0 0 0 3px rgba(37,214,196,.14),var(--glow);
  background:rgba(255,255,255,.06);
}
.kbd{
  font-family:var(--font-num);
  font-size:.6875rem;
  color:var(--text-3);
  border:1px solid var(--line);
  border-radius:6px;
  padding:2px 6px;
  line-height:1.2;
  white-space:nowrap;
}
.icon-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  color:var(--text-2);
  transition:color .22s ease,border-color .22s ease,background .22s ease,transform .22s ease;
}
.icon-btn:hover{color:var(--teal);border-color:rgba(37,214,196,.5);background:rgba(37,214,196,.08);transform:translateY(-1px);}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:1.6px;
  border-radius:2px;
  background:var(--text-2);
  transition:transform .26s ease,opacity .26s ease;
}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line-soft);
  background:rgba(11,19,31,.98);
  padding:16px 20px 24px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer a{
  display:block;
  padding:13px 4px;
  color:var(--text-2);
  font-size:1rem;
  border-bottom:1px solid var(--line-soft);
}
.mobile-drawer a:hover{color:var(--teal);}
.mobile-drawer .btn{margin-top:18px;width:100%;justify-content:center;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-weight:600;
  letter-spacing:.02em;
  border-radius:999px;
  padding:14px 30px;
  font-size:.9375rem;
  line-height:1.2;
  transition:transform .24s cubic-bezier(.22,1,.36,1),box-shadow .24s ease,background .24s ease,border-color .24s ease,color .24s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--teal) 0%,var(--violet) 135%);
  color:#04141A;
  box-shadow:0 14px 30px rgba(37,214,196,.24),inset 0 1px 0 rgba(255,255,255,.35);
}
.btn-primary:hover{
  color:#04141A;
  transform:translateY(-2px);
  box-shadow:0 18px 38px rgba(37,214,196,.34),var(--glow),inset 0 1px 0 rgba(255,255,255,.45);
  filter:brightness(1.08);
}
.btn-ghost{
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--text);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{
  border-color:rgba(37,214,196,.6);
  color:var(--teal-light);
  transform:translateY(-2px);
  box-shadow:var(--glow);
}
.btn-sm{padding:10px 20px;font-size:.875rem;}
.btn:disabled,.btn[disabled]{opacity:.45;pointer-events:none;}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--teal);
  font-weight:600;
  font-size:.9375rem;
}
.btn-text i{transition:transform .24s ease;}
.btn-text:hover i{transform:translateX(4px);}

/* ---------- 面包屑 ---------- */
.crumb-bar{
  padding:28px 0 6px;
  font-size:.875rem;
  color:var(--text-3);
}
.crumb-bar ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb-bar li{display:inline-flex;align-items:center;gap:8px;}
.crumb-bar li+li::before{content:"/";color:var(--text-3);opacity:.6;}
.crumb-bar a{color:var(--text-2);}
.crumb-bar a:hover{color:var(--teal);}
.crumb-bar .current{color:var(--teal);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:bottom;}

/* ---------- 文章头部 ---------- */
.article-hero{padding:18px 0 0;}
.article-hero-inner{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(16,27,43,.9),rgba(6,11,20,.96));
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  padding:52px 48px 46px;
}
.article-hero-inner::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  opacity:.20;
  filter:saturate(.9);
}
.article-hero-inner::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(6,11,20,.94) 0%,rgba(6,11,20,.72) 52%,rgba(6,11,20,.42) 100%);
}
.hero-content{position:relative;z-index:2;max-width:860px;}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.8125rem;
  font-weight:600;
  letter-spacing:.04em;
  padding:5px 13px;
  border-radius:999px;
  border:1px solid rgba(37,214,196,.35);
  background:rgba(37,214,196,.10);
  color:var(--teal-light);
}
.badge-amber{
  border-color:rgba(255,196,107,.32);
  background:rgba(255,196,107,.10);
  color:var(--amber);
}
.article-hero h1{
  font-size:clamp(1.65rem,3.6vw,2.6rem);
  font-weight:700;
  line-height:1.3;
  letter-spacing:.02em;
  margin:20px 0 18px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  font-size:.875rem;
  color:var(--text-2);
}
.article-meta span{display:inline-flex;align-items:center;gap:8px;}
.article-meta i{color:var(--teal);font-size:.8125rem;}
.article-meta .dot-sep{
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--text-3);
  display:inline-block;
}
@media(max-width:768px){
  .article-hero-inner{padding:34px 22px 32px;}
  .article-hero h1{font-size:1.5rem;}
}

/* ---------- 文章主体 ---------- */
.article-body{padding:56px 0 20px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,780px) 300px;
  gap:56px;
  justify-content:center;
  align-items:start;
}
.article-figure{
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--panel);
  margin-bottom:38px;
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
}
.article-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.article-content{
  font-size:1.0625rem;
  line-height:1.9;
  color:var(--text);
  max-width:780px;
}
.article-content > * + *{margin-top:1.25em;}
.article-content h2{
  font-size:clamp(1.4rem,2.4vw,1.75rem);
  font-weight:600;
  margin-top:2.2em;
  padding-left:16px;
  position:relative;
  scroll-margin-top:110px;
}
.article-content h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.22em;
  bottom:.22em;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--teal),var(--violet));
}
.article-content h3{
  font-size:1.25rem;
  font-weight:600;
  margin-top:1.9em;
  color:var(--teal-light);
  scroll-margin-top:110px;
}
.article-content p{color:#D8E4EF;}
.article-content a{color:var(--teal);border-bottom:1px solid rgba(37,214,196,.35);}
.article-content a:hover{color:var(--teal-light);border-bottom-color:var(--teal-light);}
.article-content strong{color:#FFFFFF;font-weight:600;}
.article-content ul,.article-content ol{padding-left:1.35em;color:#D8E4EF;}
.article-content ul{list-style:none;padding-left:0;}
.article-content ul > li{
  position:relative;
  padding-left:24px;
  margin-top:.6em;
}
.article-content ul > li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.72em;
  width:8px;
  height:8px;
  border-radius:2px;
  background:linear-gradient(135deg,var(--teal),var(--violet));
  transform:rotate(45deg);
}
.article-content ol{list-style:decimal;}
.article-content ol > li{margin-top:.6em;padding-left:.35em;}
.article-content ol > li::marker{color:var(--teal);font-weight:600;}
.article-content blockquote{
  margin:1.6em 0;
  padding:18px 24px;
  border-left:3px solid var(--teal);
  border-radius:0 var(--r-md) var(--r-md) 0;
  background:var(--glass);
  backdrop-filter:blur(12px);
  color:var(--text-2);
  line-height:1.85;
}
.article-content blockquote p{color:var(--text-2);}
.article-content img{
  border-radius:var(--r-img);
  border:1px solid var(--line);
  margin:1.6em auto;
  width:100%;
  object-fit:cover;
}
.article-content figure{margin:1.6em 0;}
.article-content figcaption{
  font-size:.8125rem;
  color:var(--text-3);
  text-align:center;
  margin-top:10px;
}
.article-content table{
  width:100%;
  border-collapse:collapse;
  font-size:.9375rem;
  margin:1.6em 0;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
}
.article-content th,.article-content td{
  padding:12px 16px;
  text-align:left;
  border-bottom:1px solid var(--line-soft);
  color:var(--text-2);
}
.article-content th{
  background:rgba(37,214,196,.08);
  color:var(--teal-light);
  font-weight:600;
  font-size:.875rem;
  letter-spacing:.02em;
}
.article-content tr:last-child td{border-bottom:none;}
.article-content code{
  font-family:var(--font-num);
  font-size:.875em;
  background:rgba(37,214,196,.10);
  border:1px solid rgba(37,214,196,.18);
  border-radius:6px;
  padding:2px 7px;
  color:var(--teal-light);
}
.article-content pre{
  background:#050A11;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:20px;
  overflow-x:auto;
  margin:1.6em 0;
}
.article-content pre code{background:none;border:none;padding:0;color:#CFE3EF;}
.article-content hr{
  border:none;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--line),transparent);
  margin:2.4em 0;
}

/* ---------- 侧栏 ---------- */
.article-sidebar{
  position:sticky;
  top:104px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{
  position:relative;
  border-radius:var(--r-xl);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:22px 22px 24px;
  overflow:hidden;
  box-shadow:0 18px 40px rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.06);
}
.side-card::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,rgba(37,214,196,.45),transparent 70%);
}
.side-title{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:.9375rem;
  font-weight:600;
  color:var(--text);
  margin-bottom:14px;
}
.side-title i{color:var(--teal);font-size:.875rem;}
.toc-nav ul{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow-y:auto;}
.toc-nav a{
  display:block;
  padding:7px 10px 7px 13px;
  font-size:.875rem;
  line-height:1.5;
  color:var(--text-2);
  border-left:2px solid transparent;
  border-radius:0 8px 8px 0;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.toc-nav a:hover{color:var(--teal-light);background:rgba(37,214,196,.06);}
.toc-nav a.active{
  color:var(--teal);
  border-left-color:var(--teal);
  background:rgba(37,214,196,.08);
}
.toc-nav a.lv-3{padding-left:26px;font-size:.8125rem;color:var(--text-3);}
.toc-empty{font-size:.875rem;color:var(--text-3);line-height:1.7;}
.side-card .side-text{
  font-size:.875rem;
  color:var(--text-2);
  line-height:1.75;
  margin-bottom:16px;
}
.side-list{display:flex;flex-direction:column;gap:12px;margin-bottom:18px;}
.side-list li{display:flex;gap:10px;font-size:.875rem;color:var(--text-2);line-height:1.6;}
.side-list i{color:var(--teal);font-size:.8125rem;margin-top:6px;}
.side-card .btn{width:100%;}

/* ---------- 标签 / 相关 ---------- */
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:44px;
  padding-top:28px;
  border-top:1px solid var(--line-soft);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.8125rem;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  color:var(--text-2);
  transition:border-color .22s ease,color .22s ease,transform .22s ease;
}
.tag:hover{border-color:rgba(37,214,196,.5);color:var(--teal-light);transform:translateY(-1px);}
.related-block{margin-top:56px;}
.related-block h2{
  font-size:1.375rem;
  font-weight:600;
  margin-bottom:20px;
  padding-left:16px;
  position:relative;
}
.related-block h2::before{
  content:"";
  position:absolute;
  left:0;top:.2em;bottom:.2em;
  width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--teal),var(--violet));
}
.related-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.mini-card{
  display:flex;
  gap:14px;
  align-items:center;
  padding:14px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(12px);
  transition:transform .24s cubic-bezier(.22,1,.36,1),border-color .24s ease,box-shadow .24s ease;
}
.mini-card:hover{
  transform:translateY(-2px);
  border-color:rgba(37,214,196,.42);
  box-shadow:var(--glow);
}
.mini-card img{
  width:96px;
  height:66px;
  object-fit:cover;
  border-radius:10px;
  flex-shrink:0;
  border:1px solid var(--line);
}
.mini-card-body h3{
  font-size:.9375rem;
  font-weight:600;
  line-height:1.5;
  margin-bottom:6px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.mini-card-body h3 a{color:var(--text);}
.mini-card-body h3 a:hover{color:var(--teal-light);}
.mini-card-body span{font-size:.8125rem;color:var(--text-3);}
.back-row{margin-top:32px;}

/* ---------- 空态 ---------- */
.empty-state{
  border-radius:var(--r-xl);
  border:1px dashed var(--line);
  background:var(--glass);
  padding:56px 32px;
  text-align:center;
}
.empty-state i{font-size:2rem;color:var(--teal);opacity:.75;}
.empty-state h2{font-size:1.25rem;margin:18px 0 10px;}
.empty-state p{color:var(--text-2);font-size:.9375rem;margin-bottom:22px;}

/* ---------- CTA ---------- */
.cta-band{padding:72px 0 84px;}
.cta-inner{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(37,214,196,.13),rgba(110,123,255,.11) 55%,rgba(16,27,43,.9));
  backdrop-filter:blur(14px);
  padding:48px 48px;
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:36px;
  align-items:center;
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
}
.cta-inner h2{font-size:clamp(1.4rem,2.4vw,1.9rem);margin-bottom:12px;}
.cta-inner p{color:var(--text-2);font-size:.9375rem;max-width:52ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
@media(max-width:900px){
  .cta-inner{grid-template-columns:1fr;padding:34px 24px;}
  .cta-actions{justify-content:flex-start;}
}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(11,19,31,.7),rgba(6,11,20,.98));
  padding:64px 0 28px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:40px;
}
.footer-brand .brand{display:flex;align-items:baseline;gap:8px;margin-bottom:16px;}
.footer-brand p{font-size:.875rem;color:var(--text-2);line-height:1.8;max-width:34ch;}
.footer-col h4{
  font-size:.9375rem;
  font-weight:600;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:.875rem;color:var(--text-2);}
.footer-col a:hover{color:var(--teal);}
.footer-note{font-size:.8125rem;color:var(--text-3);line-height:1.7;margin-bottom:14px;}
.subscribe-form{display:flex;gap:10px;}
.subscribe-form input{
  flex:1;
  min-width:0;
  height:42px;
  padding:0 14px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text);
  font-size:.875rem;
  outline:none;
  transition:border-color .24s ease,box-shadow .24s ease;
}
.subscribe-form input::placeholder{color:var(--text-3);}
.subscribe-form input:focus{
  border-color:rgba(37,214,196,.6);
  box-shadow:0 0 0 3px rgba(37,214,196,.14);
}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid var(--line-soft);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:.8125rem;
  color:var(--text-3);
}
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .article-sidebar{position:static;}
  .related-grid{grid-template-columns:1fr;}
}
@media(max-width:900px){
  .nav-links,.cmd-search,.icon-btn{display:none;}
  .nav-toggle{display:flex;}
  .header-actions{margin-left:auto;}
}
@media(max-width:640px){
  .header-inner{height:66px;gap:14px;}
  .brand-main{font-size:1.15rem;}
  .brand-sub{font-size:.75rem;}
  .subscribe-form{flex-direction:column;}
  .subscribe-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .article-body{padding:36px 0 10px;}
  .mini-card{flex-direction:column;align-items:flex-start;}
  .mini-card img{width:100%;height:140px;}
  .article-meta{gap:8px 14px;font-size:.8125rem;}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --bg:#060B14;
  --bg-2:#0B131F;
  --panel:#101B2B;
  --primary:#25D6C4;
  --primary-deep:#12A79A;
  --primary-light:#6FF0E4;
  --secondary:#6E7BFF;
  --amber:#FFC46B;
  --text:#EAF2F8;
  --text-2:#9FB0C4;
  --text-3:#6C7E94;
  --glass:rgba(255,255,255,.04);
  --glass-2:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(37,214,196,.32);
  --coral:#F08A8A;
  --radius-xl:24px;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 24px 48px rgba(0,0,0,.45);
  --shadow-inset:inset 0 1px 0 rgba(255,255,255,.06);
  --glow:0 0 32px rgba(37,214,196,.22);
  --container:1240px;
  --gutter:24px;
  --ease:cubic-bezier(.22,1,.36,1);
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:76px;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size:1rem;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text);
  background:
    radial-gradient(1200px 620px at 10% -10%, rgba(37,214,196,.10), transparent 62%),
    radial-gradient(960px 540px at 94% 2%, rgba(110,123,255,.10), transparent 64%),
    var(--bg);
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease),text-underline-offset .2s var(--ease);}
a:hover{color:var(--primary-light);text-decoration:underline;text-underline-offset:4px;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;}
::selection{background:rgba(37,214,196,.28);color:#fff;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

/* Foundation 覆盖 */
.grid-container{
  max-width:var(--container);
  padding-left:var(--gutter);
  padding-right:var(--gutter);
  margin-left:auto;
  margin-right:auto;
}
.grid-padding-x{margin-left:-12px;margin-right:-12px;}
.grid-padding-x>.cell{padding-left:12px;padding-right:12px;}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{margin-left:12px;margin-right:12px;}
body,h1,h2,h3,h4,h5,h6{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Helvetica,Arial,sans-serif;}
body p{font-family:inherit;}
.accordion{border:none !important;background:transparent !important;}

/* ============ 通用排版 ============ */
.h1{
  font-size:clamp(2rem,5vw,3.5rem);
  font-weight:700;
  line-height:1.25;
  letter-spacing:.02em;
  margin-bottom:20px;
}
.h2{
  font-size:clamp(1.5rem,3vw,2.25rem);
  font-weight:600;
  line-height:1.3;
  letter-spacing:.015em;
  margin-bottom:16px;
}
.h3{font-size:1.25rem;font-weight:600;line-height:1.45;margin-bottom:12px;}
.lead{font-size:1.0625rem;color:var(--text-2);line-height:1.9;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8125rem;letter-spacing:.14em;color:var(--primary);
  padding:6px 14px;border:1px solid var(--line-strong);border-radius:999px;
  background:rgba(37,214,196,.07);margin-bottom:18px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 12px var(--primary);}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:linear-gradient(180deg,rgba(11,19,31,.72),rgba(6,11,20,.2));border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.divider{height:1px;background:linear-gradient(90deg,var(--primary),rgba(37,214,196,0) 70%);border:0;margin:0;opacity:.5;}

/* ============ 玻璃卡 ============ */
.glass{
  position:relative;
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow),var(--shadow-inset);
}
.glass::before{
  content:"";position:absolute;left:14px;right:14px;top:0;height:1px;
  background:linear-gradient(90deg,rgba(37,214,196,.35),rgba(37,214,196,0) 70%);
  border-radius:999px;pointer-events:none;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  font-size:.9375rem;font-weight:600;letter-spacing:.02em;cursor:pointer;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 130%);
  color:#04121A;
  box-shadow:0 10px 26px rgba(37,214,196,.24);
}
.btn-primary:hover{
  color:#04121A;text-decoration:none;
  transform:translateY(-2px);
  box-shadow:0 16px 34px rgba(37,214,196,.34),var(--glow);
  filter:brightness(1.08);
}
.btn-ghost{
  background:var(--glass);color:var(--text);border-color:var(--line);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{
  color:var(--primary-light);text-decoration:none;border-color:var(--line-strong);
  transform:translateY(-2px);box-shadow:0 12px 28px rgba(0,0,0,.35);
}
.btn-text{
  padding:6px 0;background:none;border:none;color:var(--primary);
}
.btn-text i{transition:transform .24s var(--ease);}
.btn-text:hover{color:var(--primary-light);text-decoration:none;}
.btn-text:hover i{transform:translateX(4px);}
.btn-sm{padding:9px 18px;font-size:.875rem;border-radius:999px;}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;filter:none;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.75rem;font-weight:600;letter-spacing:.06em;
  padding:5px 12px;border-radius:999px;
  border:1px solid var(--line);background:var(--glass-2);color:var(--text-2);
}
.badge-primary{color:var(--primary);border-color:var(--line-strong);background:rgba(37,214,196,.08);}
.badge-amber{color:var(--amber);border-color:rgba(255,196,107,.28);background:rgba(255,196,107,.07);}
.badge-violet{color:#A9B1FF;border-color:rgba(110,123,255,.3);background:rgba(110,123,255,.08);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(6,11,20,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,11,20,.92);
  box-shadow:0 12px 32px rgba(0,0,0,.45);
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:75px;transition:height .3s var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px;}
.brand{display:flex;align-items:baseline;gap:8px;text-decoration:none;flex:0 0 auto;}
.brand:hover{text-decoration:none;}
.brand-main{
  font-size:1.25rem;font-weight:700;letter-spacing:.02em;color:var(--text);
}
.brand-main em{font-style:normal;color:var(--primary);}
.brand-sub{
  font-size:.78rem;font-weight:500;letter-spacing:.14em;color:var(--text-2);
}
.brand:hover .brand-main{color:var(--primary-light);}
.nav-links{
  display:flex;align-items:center;gap:26px;margin-left:8px;flex:1 1 auto;
}
.nav-links a{
  position:relative;color:var(--text-2);font-size:.9375rem;font-weight:500;
  padding:6px 2px;text-decoration:none;transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  transform:scaleX(0);transform-origin:left;transition:transform .28s var(--ease);
}
.nav-links a:hover{color:var(--text);text-decoration:none;}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--primary-light);}
.nav-links a.active::after{transform:scaleX(1);}
.header-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.command-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:238px;padding:8px 12px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease);
}
.command-search i{color:var(--text-3);font-size:.85rem;}
.command-search input{
  flex:1;min-width:0;background:none;border:none;outline:none;
  color:var(--text);font-size:.875rem;padding:0;margin:0;height:auto;
}
.command-search input::placeholder{color:var(--text-3);}
.command-search:focus-within{
  border-color:var(--line-strong);
  box-shadow:var(--glow);background:rgba(37,214,196,.05);
}
.kbd{
  font-size:.6875rem;color:var(--text-3);border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;background:rgba(255,255,255,.04);
  letter-spacing:.04em;
}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;
  background:var(--glass);border:1px solid var(--line);
  color:var(--text-2);transition:all .24s var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:var(--line-strong);text-decoration:none;box-shadow:var(--glow);}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);color:var(--text);
  cursor:pointer;align-items:center;justify-content:center;
}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:80%;max-width:330px;z-index:80;
  background:#0A1220;border-left:1px solid var(--line);
  padding:26px 22px;transform:translateX(102%);
  transition:transform .34s var(--ease);
  box-shadow:-24px 0 48px rgba(0,0,0,.55);
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{
  width:36px;height:36px;border-radius:50%;background:var(--glass);
  border:1px solid var(--line);color:var(--text);cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:26px;}
.drawer-nav a{
  padding:13px 14px;border-radius:12px;color:var(--text-2);
  font-size:.9375rem;border:1px solid transparent;text-decoration:none;
}
.drawer-nav a:hover,.drawer-nav a.active{
  color:var(--primary-light);background:rgba(37,214,196,.07);
  border-color:var(--line-strong);text-decoration:none;
}
.drawer-search{
  display:flex;align-items:center;gap:8px;padding:11px 14px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);margin-bottom:18px;
}
.drawer-search input{background:none;border:none;outline:none;color:var(--text);width:100%;font-size:.875rem;}
.backdrop{
  position:fixed;inset:0;background:rgba(3,7,13,.66);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);
  backdrop-filter:blur(3px);
}
.backdrop.is-open{opacity:1;visibility:visible;}

/* ============ 面包屑 ============ */
.breadcrumb-bar{padding:26px 0 6px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:.8125rem;color:var(--text-3);
}
.breadcrumb a{color:var(--text-2);text-decoration:none;}
.breadcrumb a:hover{color:var(--primary);text-decoration:none;}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.breadcrumb .current{color:var(--primary);}

/* ============ Hero ============ */
.hero{padding:34px 0 74px;position:relative;overflow:hidden;}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(37,214,196,.16),transparent 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.hero-copy{position:relative;z-index:2;}
.hero-copy .h1 span{color:var(--primary);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-figure{position:relative;}
.hero-figure .frame{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
  aspect-ratio:16/11;background:#0A1220;
}
.hero-figure .frame img{width:100%;height:100%;object-fit:cover;}
.hero-figure .frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,20,.06),rgba(6,11,20,.72));
}
.float-card{
  position:absolute;left:-14px;bottom:-26px;width:min(320px,86%);
  padding:18px 20px;border-radius:var(--radius);z-index:3;
}
.float-card .fc-title{font-size:.9375rem;font-weight:600;margin-bottom:6px;}
.float-card .fc-text{font-size:.8125rem;color:var(--text-2);line-height:1.7;}
.float-card .fc-row{display:flex;align-items:center;gap:10px;margin-top:12px;}
.pulse-dot{
  width:8px;height:8px;border-radius:50%;background:var(--primary);
  box-shadow:0 0 0 4px rgba(37,214,196,.18);flex:0 0 auto;
}

/* ============ 数据条 ============ */
.metrics{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;
  border-radius:var(--radius-lg);overflow:hidden;
}
.metric{
  padding:26px 28px;border-right:1px solid var(--line);
  position:relative;
}
.metric:last-child{border-right:none;}
.metric .num{
  font-size:1.875rem;font-weight:700;color:var(--primary);letter-spacing:.02em;
  font-family:"Helvetica Neue",Arial,"PingFang SC",sans-serif;
}
.metric .num small{font-size:.9375rem;color:var(--text-2);font-weight:500;margin-left:4px;}
.metric .label{font-size:.875rem;color:var(--text-2);margin-top:4px;}

/* ============ 正文双栏 ============ */
.doc-layout{display:grid;grid-template-columns:250px 1fr;gap:52px;align-items:start;}
.toc{
  position:sticky;top:100px;padding:22px;border-radius:var(--radius);
}
.toc h4{
  font-size:.75rem;letter-spacing:.16em;color:var(--text-3);
  font-weight:600;margin-bottom:14px;
}
.toc ol{display:flex;flex-direction:column;gap:2px;counter-reset:toc;}
.toc li{counter-increment:toc;}
.toc a{
  display:block;padding:9px 12px;border-radius:10px;
  font-size:.875rem;color:var(--text-2);text-decoration:none;
  border-left:2px solid transparent;transition:all .22s var(--ease);
}
.toc a::before{content:counter(toc,decimal-leading-zero) " · ";color:var(--text-3);font-size:.75rem;}
.toc a:hover{color:var(--text);background:var(--glass);text-decoration:none;}
.toc a.active{
  color:var(--primary-light);background:rgba(37,214,196,.07);
  border-left-color:var(--primary);
}
.doc-body{max-width:780px;}
.doc-block{margin-bottom:52px;scroll-margin-top:104px;}
.doc-block h2{
  font-size:clamp(1.375rem,2.4vw,1.75rem);font-weight:600;line-height:1.35;
  margin-bottom:16px;padding-left:16px;position:relative;
}
.doc-block h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--secondary));
}
.doc-block p{color:var(--text-2);font-size:1.0625rem;line-height:1.9;margin-bottom:18px;}
.doc-block p strong{color:var(--text);font-weight:600;}
.doc-block h3{font-size:1.125rem;font-weight:600;margin:26px 0 10px;color:var(--text);}
.note{
  border-left:3px solid var(--primary);
  background:var(--glass);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  padding:18px 22px;margin-bottom:20px;color:var(--text-2);font-size:.9375rem;
}
.check-list{display:flex;flex-direction:column;gap:12px;margin-bottom:22px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  color:var(--text-2);font-size:1rem;line-height:1.8;
}
.check-list li i{color:var(--primary);margin-top:7px;font-size:.8125rem;}
.def-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:8px 0 22px;}
.def-card{padding:20px;border-radius:var(--radius);}
.def-card .dc-icon{
  width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(37,214,196,.1);border:1px solid var(--line-strong);
  color:var(--primary);margin-bottom:14px;
}
.def-card h3{font-size:1rem;margin:0 0 8px;}
.def-card p{font-size:.875rem;color:var(--text-2);margin:0;line-height:1.75;}

/* 步骤 */
.steps{display:flex;flex-direction:column;gap:14px;margin-bottom:22px;}
.step{
  display:flex;gap:18px;padding:20px 22px;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--glass);
  transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.step:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.step .idx{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:.9375rem;color:#04121A;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  font-family:"Helvetica Neue",Arial,sans-serif;
}
.step h3{font-size:1rem;margin:0 0 6px;}
.step p{margin:0;font-size:.9375rem;color:var(--text-2);line-height:1.8;}

/* ============ 要点清单卡 ============ */
.point-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.point-card{
  padding:26px 24px;border-radius:var(--radius-lg);
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.point-card:hover{
  transform:translateY(-3px);border-color:var(--line-strong);
  box-shadow:var(--shadow),var(--glow);
}
.point-card .pc-no{
  font-size:.75rem;letter-spacing:.16em;color:var(--amber);margin-bottom:12px;display:block;
}
.point-card h3{font-size:1.0625rem;margin-bottom:10px;}
.point-card p{font-size:.875rem;color:var(--text-2);line-height:1.8;margin:0;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion-item{
  border:1px solid var(--line) !important;
  border-radius:var(--radius) !important;
  background:var(--glass) !important;
  backdrop-filter:blur(12px);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.accordion-item:hover{border-color:var(--line-strong) !important;}
.accordion-item.is-active{border-color:var(--line-strong) !important;box-shadow:var(--glow);}
.accordion-title{
  position:relative;display:block;
  padding:20px 62px 20px 22px !important;
  background:transparent !important;
  border:none !important;
  color:var(--text) !important;
  font-size:1rem;font-weight:600;line-height:1.6;
}
.accordion-title::before{display:none !important;}
.accordion-title::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);color:var(--primary);
  font-size:1rem;font-weight:500;line-height:1;
  transition:transform .28s var(--ease),background .28s var(--ease);
}
.accordion-item.is-active .accordion-title::after{
  content:"−";background:rgba(37,214,196,.12);transform:translateY(-50%) rotate(180deg);
}
.accordion-content{
  border:none !important;
  background:transparent !important;
  color:var(--text-2) !important;
  padding:0 62px 20px 22px !important;
  font-size:.9375rem;line-height:1.85;
}

/* ============ CTA 横幅 ============ */
.cta-banner{
  position:relative;overflow:hidden;
  padding:44px 46px;border-radius:var(--radius-xl);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:
    linear-gradient(120deg,rgba(37,214,196,.12),rgba(110,123,255,.10) 60%,rgba(37,214,196,0) 100%),
    var(--glass);
}
.cta-banner::after{
  content:"";position:absolute;right:-90px;bottom:-120px;width:340px;height:340px;
  background:radial-gradient(circle,rgba(37,214,196,.18),transparent 66%);
  pointer-events:none;
}
.cta-banner h2{font-size:clamp(1.375rem,2.6vw,1.875rem);font-weight:600;margin-bottom:10px;}
.cta-banner p{color:var(--text-2);font-size:.9375rem;margin:0;max-width:620px;}
.cta-banner .cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;position:relative;z-index:2;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:20px;
  background:linear-gradient(180deg,rgba(11,19,31,.86),rgba(6,11,20,.98));
  border-top:1px solid var(--line);
  padding:60px 0 26px;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(37,214,196,.4),rgba(37,214,196,0) 65%);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:.875rem;color:var(--text-2);line-height:1.85;max-width:340px;}
.footer-col h4{
  font-size:.8125rem;letter-spacing:.14em;color:var(--text-3);
  font-weight:600;margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:var(--text-2);font-size:.875rem;text-decoration:none;}
.footer-col a:hover{color:var(--primary);text-decoration:none;}
.footer-note{font-size:.8125rem;color:var(--text-3);margin-bottom:14px;line-height:1.75;}
.subscribe-form{display:flex;gap:8px;align-items:center;}
.subscribe-form input{
  flex:1;min-width:0;height:42px;padding:0 14px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);
  color:var(--text);font-size:.875rem;outline:none;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.subscribe-form input::placeholder{color:var(--text-3);}
.subscribe-form input:focus{border-color:var(--line-strong);box-shadow:var(--glow);}
.subscribe-form input:invalid:not(:placeholder-shown){border-color:rgba(240,138,138,.6);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:.8125rem;color:var(--text-3);
}

/* ============ 动效 ============ */
.reveal-up{opacity:0;transform:translateY(14px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal-up.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal-up{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  .btn:hover,.point-card:hover,.step:hover{transform:none;}
}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  .command-search{width:180px;}
  .nav-links{gap:18px;}
  .hero-grid{grid-template-columns:1fr;gap:52px;}
  .hero-figure .frame{aspect-ratio:16/9;}
  .float-card{left:auto;right:12px;bottom:-24px;}
  .doc-layout{grid-template-columns:1fr;gap:32px;}
  .toc{position:static;}
  .toc ol{flex-direction:row;flex-wrap:wrap;}
  .toc li{flex:1 1 45%;}
  .doc-body{max-width:none;}
  .point-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media screen and (max-width:900px){
  .nav-links{display:none;}
  .command-search{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-tools .icon-btn{display:none;}
}
@media screen and (max-width:768px){
  body{padding-top:68px;}
  .header-inner{height:67px;}
  .section{padding:64px 0;}
  .section-tight{padding:48px 0;}
  .hero{padding:20px 0 56px;}
  .def-grid{grid-template-columns:1fr;}
  .metrics{grid-template-columns:1fr;}
  .metric{border-right:none;border-bottom:1px solid var(--line);}
  .metric:last-child{border-bottom:none;}
  .cta-banner{flex-direction:column;align-items:flex-start;padding:34px 26px;}
  .cta-banner .cta-actions{width:100%;}
  .cta-banner .cta-actions .btn{flex:1 1 auto;}
}
@media screen and (max-width:520px){
  :root{--gutter:20px;}
  body{padding-top:64px;}
  .brand-sub{display:none;}
  .hero-actions .btn{width:100%;}
  .point-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .subscribe-form{flex-wrap:wrap;}
  .subscribe-form input{flex:1 1 100%;}
  .subscribe-form .btn{width:100%;}
  .accordion-title{padding:18px 56px 18px 18px !important;font-size:.9375rem;}
  .accordion-content{padding:0 20px 18px 18px !important;}
  .doc-block h2{font-size:1.25rem;}
}

/* roulang page: category2 */
/* ===================== 设计变量 ===================== */
:root{
  --bg:#060B14;
  --bg-alt:#0B131F;
  --panel:#101B2B;
  --primary:#25D6C4;
  --primary-dark:#12A79A;
  --primary-light:#6FF0E4;
  --secondary:#6E7BFF;
  --amber:#FFC46B;
  --text:#EAF2F8;
  --text-2:#9FB0C4;
  --text-3:#6C7E94;
  --glass:rgba(255,255,255,.04);
  --glass-2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --danger:#F2836F;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow:0 24px 48px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-soft:0 14px 30px rgba(0,0,0,.35);
  --glow:0 0 32px rgba(37,214,196,.22);
  --maxw:1240px;
  --gap:24px;
  --ease:cubic-bezier(.22,1,.36,1);
}

/* ===================== Reset / Base ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(720px 420px at 12% -6%, rgba(37,214,196,.14), transparent 65%),
    radial-gradient(700px 500px at 92% 4%, rgba(110,123,255,.12), transparent 68%),
    radial-gradient(900px 600px at 50% 108%, rgba(37,214,196,.06), transparent 70%);
}
h1,h2,h3,h4,h5,h6{
  font-family:inherit;
  color:var(--text);
  margin:0 0 .6em;
  font-weight:600;
  letter-spacing:.02em;
}
h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:700;line-height:1.25;}
h2{font-size:clamp(1.5rem,3vw,2.25rem);font-weight:600;line-height:1.3;}
h3{font-size:1.25rem;font-weight:600;line-height:1.45;}
h4{font-size:1.0625rem;font-weight:600;line-height:1.5;}
p{margin:0 0 1.15em;color:var(--text-2);}
a{
  color:var(--primary);
  text-decoration:none;
  background-color:transparent;
  transition:color .25s var(--ease), text-underline-offset .25s var(--ease);
}
a:hover,a:focus{
  color:var(--primary-light);
  text-decoration:underline;
  text-underline-offset:4px;
}
img{max-width:100%;height:auto;display:block;border-style:none;}
ul,ol{margin:0 0 1.1em;padding-left:1.25em;color:var(--text-2);}
li{margin-bottom:.4em;}
button,.button{font-family:inherit;}
input,textarea,select{
  font-family:inherit;
  font-size:1rem;
  color:var(--text);
}
::selection{background:rgba(37,214,196,.32);color:#fff;}
:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:6px;
}

/* ===================== 容器 ===================== */
.grid-container,.container{
  width:100%;
  max-width:var(--maxw);
  margin-left:auto;
  margin-right:auto;
  padding-left:24px;
  padding-right:24px;
}
.grid-x.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-x.grid-margin-x > .cell{padding-left:12px;padding-right:12px;}

main{position:relative;z-index:1;}
.section{padding:84px 0;position:relative;}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head p{margin-bottom:0;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.8125rem;
  letter-spacing:.14em;
  color:var(--primary);
  text-transform:none;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:linear-gradient(90deg,var(--primary),transparent);
}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,11,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .3s var(--ease), box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,11,20,.92);
  box-shadow:0 12px 30px rgba(0,0,0,.42);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:78px;
  transition:min-height .3s var(--ease);
}
.site-header.is-scrolled .nav-inner{min-height:66px;}
.brand{
  display:inline-flex;
  flex-direction:column;
  line-height:1.05;
  text-decoration:none;
  flex:0 0 auto;
}
.brand:hover{text-decoration:none;}
.brand-main{
  font-size:1.375rem;
  font-weight:700;
  color:var(--text);
  letter-spacing:.02em;
}
.brand-main em{
  font-style:normal;
  color:var(--primary);
}
.brand-sub{
  font-size:.875rem;
  color:var(--text-3);
  letter-spacing:.02em;
  margin-top:3px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
  flex:1 1 auto;
}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:10px 14px;
  border-radius:var(--radius-sm);
  color:var(--text-2);
  font-size:.9375rem;
  text-decoration:none;
  transition:color .25s var(--ease), background .25s var(--ease);
  white-space:nowrap;
}
.nav-links a:hover{
  color:var(--text);
  background:var(--glass);
  text-decoration:none;
}
.nav-links a.active{
  color:var(--primary-light);
}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),rgba(37,214,196,.15));
}
.nav-tools{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}
.command-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:238px;
  padding:8px 12px;
  border-radius:var(--radius-pill);
  background:var(--glass);
  border:1px solid var(--line);
  transition:border-color .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease);
}
.command-search:focus-within{
  border-color:rgba(37,214,196,.6);
  box-shadow:0 0 0 3px rgba(37,214,196,.14), var(--glow);
  background:rgba(255,255,255,.06);
}
.command-search i{color:var(--text-3);font-size:.875rem;}
.command-search input{
  flex:1 1 auto;
  min-width:0;
  border:0;
  background:transparent;
  box-shadow:none;
  margin:0;
  height:auto;
  padding:0;
  font-size:.875rem;
  color:var(--text);
}
.command-search input:focus{outline:none;box-shadow:none;}
.command-search input::placeholder{color:var(--text-3);}
.kbd{
  font-size:.6875rem;
  color:var(--text-3);
  border:1px solid var(--line-strong);
  border-radius:6px;
  padding:1px 6px;
  line-height:1.4;
  flex:0 0 auto;
}
.icon-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:var(--radius-sm);
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text-2);
  transition:all .25s var(--ease);
}
.icon-btn:hover{
  color:var(--primary);
  border-color:rgba(37,214,196,.5);
  text-decoration:none;
  transform:translateY(-1px);
}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:var(--radius-sm);
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text);
  cursor:pointer;
}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--radius-pill);
  font-size:.9375rem;
  font-weight:600;
  letter-spacing:.02em;
  border:1px solid transparent;
  cursor:pointer;
  text-decoration:none;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
  white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);
  color:#04121A;
  box-shadow:0 12px 30px rgba(37,214,196,.22);
}
.btn-primary:hover{
  color:#04121A;
  transform:translateY(-2px);
  box-shadow:0 16px 38px rgba(37,214,196,.34), var(--glow);
  filter:brightness(1.08);
}
.btn-ghost{
  background:var(--glass);
  border-color:var(--line-strong);
  color:var(--text);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{
  color:var(--primary-light);
  border-color:rgba(37,214,196,.6);
  transform:translateY(-2px);
  box-shadow:var(--glow);
}
.btn-sm{padding:9px 18px;font-size:.875rem;}
.btn-lg{padding:15px 32px;font-size:1rem;}
.btn:disabled,.btn[disabled]{
  opacity:.45;
  cursor:not-allowed;
  transform:none;
  box-shadow:none;
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-weight:600;
  font-size:.9375rem;
}
.link-more i{transition:transform .25s var(--ease);}
.link-more:hover i{transform:translateX(4px);}

/* ===================== 标签 / 徽章 ===================== */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  font-size:.75rem;
  letter-spacing:.04em;
  color:var(--primary-light);
  background:rgba(37,214,196,.1);
  border:1px solid rgba(37,214,196,.28);
}
.badge-blue{
  color:#C3C9FF;
  background:rgba(110,123,255,.12);
  border-color:rgba(110,123,255,.32);
}
.badge-amber{
  color:var(--amber);
  background:rgba(255,196,107,.1);
  border-color:rgba(255,196,107,.3);
}
.tag-list{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  list-style:none;
  padding:0;
  margin:0;
}
.tag-list li{margin:0;}
.tag{
  display:inline-flex;
  padding:7px 16px;
  border-radius:var(--radius-pill);
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:.8125rem;
}

/* ===================== 面包屑 ===================== */
.breadcrumb{
  padding:22px 0 0;
  font-size:.8125rem;
  color:var(--text-3);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.breadcrumb .current{color:var(--primary);}

/* ===================== 内页横向头部 ===================== */
.page-head{
  padding:38px 0 56px;
}
.page-head-grid{
  display:grid;
  grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);
  gap:48px;
  align-items:center;
}
.page-head h1{margin-bottom:18px;}
.page-head .lead{
  font-size:1.0625rem;
  color:var(--text-2);
  max-width:640px;
  margin-bottom:0;
}
.page-head-actions{
  display:flex;
  flex-direction:column;
  gap:16px;
  justify-content:center;
  padding:28px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  position:relative;
  overflow:hidden;
}
.page-head-actions::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(37,214,196,.55),rgba(37,214,196,0));
}
.page-head-actions .hint{
  font-size:.8125rem;
  color:var(--text-3);
  margin:0;
  line-height:1.7;
}
.page-head-actions .btn{width:100%;}

/* ===================== 速查数据条 ===================== */
.metric-bar{
  margin-top:46px;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:0;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  overflow:hidden;
}
.metric{
  padding:26px 28px;
  border-right:1px solid var(--line);
}
.metric:last-child{border-right:0;}
.metric .num{
  font-size:1.875rem;
  font-weight:700;
  color:var(--primary);
  letter-spacing:.02em;
  line-height:1.2;
  font-family:"SF Pro Display","Segoe UI",Roboto,sans-serif;
}
.metric .num span{font-size:1rem;color:var(--text-3);margin-left:4px;font-weight:500;}
.metric .desc{
  font-size:.875rem;
  color:var(--text-2);
  margin:6px 0 0;
}

/* ===================== 交替图文行 ===================== */
.alt-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;
  align-items:center;
  padding:34px 0;
}
.alt-row + .alt-row{border-top:1px solid var(--line);}
.alt-row.reverse .alt-media{order:2;}
.alt-row.reverse .alt-body{order:1;}
.alt-media{
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow);
  position:relative;
}
.alt-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(160deg,rgba(6,11,20,0) 40%,rgba(6,11,20,.55) 100%);
  pointer-events:none;
}
.alt-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.alt-media:hover img{transform:scale(1.03);}
.alt-body .badge{margin-bottom:16px;}
.alt-body h3{font-size:1.5rem;margin-bottom:14px;}
.alt-body p{font-size:1rem;}
.alt-list{
  list-style:none;
  padding:0;
  margin:18px 0 0;
}
.alt-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:.9375rem;
  color:var(--text-2);
  padding:9px 0;
  border-bottom:1px dashed rgba(255,255,255,.07);
}
.alt-list li:last-child{border-bottom:0;}
.alt-list i{
  color:var(--primary);
  font-size:.75rem;
  margin-top:.55em;
  flex:0 0 auto;
}

/* ===================== 对比卡网格 ===================== */
.compare-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:26px;
}
.compare-card{
  position:relative;
  padding:30px 28px 26px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-soft);
  transition:transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
  overflow:hidden;
}
.compare-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(37,214,196,.5),rgba(37,214,196,0));
}
.compare-card::after{
  content:"";
  position:absolute;
  left:28px;right:28px;bottom:-14px;
  height:1px;
  background:linear-gradient(90deg,rgba(37,214,196,0),rgba(37,214,196,.55),rgba(110,123,255,.35),rgba(37,214,196,0));
}
.compare-card:hover{
  transform:translateY(-2px);
  border-color:rgba(37,214,196,.4);
  box-shadow:var(--shadow), var(--glow);
}
.compare-card h3{font-size:1.25rem;margin:14px 0 12px;}
.compare-card ul{
  list-style:none;
  padding:0;
  margin:0 0 18px;
}
.compare-card ul li{
  position:relative;
  padding-left:20px;
  font-size:.9375rem;
  color:var(--text-2);
  margin-bottom:9px;
}
.compare-card ul li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:8px;height:1px;
  background:var(--primary);
}

/* ===================== 步骤条 ===================== */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
  counter-reset:step;
}
.step{
  position:relative;
  padding:28px 24px 24px;
  border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  border:1px solid var(--line);
  transition:transform .3s var(--ease), border-color .3s var(--ease);
}
.step:hover{transform:translateY(-2px);border-color:rgba(37,214,196,.4);}
.step .idx{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:var(--radius-sm);
  background:rgba(37,214,196,.12);
  border:1px solid rgba(37,214,196,.32);
  color:var(--primary);
  font-weight:700;
  font-size:.9375rem;
  margin-bottom:16px;
}
.step h4{margin-bottom:8px;font-size:1.0625rem;}
.step p{font-size:.875rem;margin:0;color:var(--text-2);}
.step::after{
  content:"";
  position:absolute;
  top:46px;right:-12px;
  width:12px;height:1px;
  background:linear-gradient(90deg,rgba(37,214,196,.6),rgba(37,214,196,0));
}
.step:last-child::after{display:none;}

/* ===================== FAQ ===================== */
.faq-wrap{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,380px);
  gap:48px;
  align-items:start;
}
.accordion{
  background:transparent;
  border:0;
  margin:0;
  list-style:none;
}
.accordion-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius);
  margin-bottom:14px;
  overflow:hidden;
  backdrop-filter:blur(14px);
  transition:border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.accordion-item:hover{border-color:rgba(37,214,196,.32);}
.accordion-title{
  display:block;
  padding:20px 58px 20px 22px;
  font-size:1.0625rem;
  font-weight:600;
  color:var(--text);
  background:transparent;
  border:0;
  position:relative;
  transition:color .25s var(--ease);
}
.accordion-title:hover,.accordion-title:focus{color:var(--primary-light);text-decoration:none;}
.accordion-title::before{
  content:"+";
  position:absolute;
  right:22px;
  top:50%;
  transform:translateY(-50%);
  display:flex;
  align-items:center;
  justify-content:center;
  width:26px;height:26px;
  border-radius:50%;
  border:1px solid rgba(37,214,196,.4);
  color:var(--primary);
  font-size:1rem;
  line-height:1;
  transition:transform .3s var(--ease), background .3s var(--ease);
}
.accordion-item.is-active .accordion-title::before{
  content:"−";
  background:rgba(37,214,196,.14);
}
.accordion-content{
  padding:0 22px 22px 22px;
  background:transparent;
  border:0;
  color:var(--text-2);
  font-size:.9375rem;
}
.accordion-content p{margin-bottom:0;font-size:.9375rem;}

.side-card{
  position:sticky;
  top:104px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.side-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(37,214,196,.55),rgba(37,214,196,0));
}
.side-card img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}
.side-card-body{padding:24px;}
.side-card-body h3{font-size:1.125rem;margin-bottom:12px;}
.side-card-body ul{
  list-style:none;
  padding:0;
  margin:0 0 20px;
}
.side-card-body ul li{
  position:relative;
  padding-left:18px;
  font-size:.875rem;
  color:var(--text-2);
  margin-bottom:8px;
}
.side-card-body ul li::before{
  content:"";
  position:absolute;
  left:0;top:.75em;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--primary);
  opacity:.75;
}
.side-card-body .btn{width:100%;}

/* ===================== CTA 横幅 ===================== */
.cta-banner{
  position:relative;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:
    radial-gradient(600px 300px at 8% 10%, rgba(37,214,196,.16), transparent 62%),
    radial-gradient(520px 320px at 96% 90%, rgba(110,123,255,.16), transparent 66%),
    rgba(255,255,255,.04);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  padding:52px 48px;
  display:grid;
  grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);
  gap:40px;
  align-items:center;
  overflow:hidden;
}
.cta-banner::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(37,214,196,.6),rgba(255,255,255,0),rgba(110,123,255,.45));
}
.cta-banner h2{margin-bottom:14px;}
.cta-banner p{margin-bottom:0;font-size:1rem;}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:26px;
}

/* ===================== 订阅表单 ===================== */
.subscribe-form{
  display:flex;
  gap:10px;
  align-items:center;
}
.subscribe-form input[type="email"]{
  flex:1 1 auto;
  min-width:0;
  height:48px;
  margin:0;
  padding:0 16px;
  border-radius:var(--radius-sm);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:var(--text);
  font-size:.9375rem;
  box-shadow:none;
  transition:border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.subscribe-form input[type="email"]::placeholder{color:var(--text-3);}
.subscribe-form input[type="email"]:focus{
  outline:none;
  border-color:rgba(37,214,196,.6);
  box-shadow:0 0 0 3px rgba(37,214,196,.14);
}
.form-note{
  font-size:.8125rem;
  color:var(--text-3);
  margin:10px 0 0;
}
.form-note.is-error{color:var(--danger);}
.form-note.is-ok{color:var(--primary);}

/* ===================== 页脚 ===================== */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:20px;
  background:var(--bg-alt);
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(37,214,196,0),rgba(37,214,196,.5),rgba(110,123,255,.35),rgba(37,214,196,0));
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.3fr);
  gap:40px;
  padding-bottom:52px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{
  font-size:.875rem;
  color:var(--text-3);
  max-width:320px;
  margin:0;
}
.footer-col h4{
  font-size:.9375rem;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{
  color:var(--text-2);
  font-size:.875rem;
  transition:color .25s var(--ease);
}
.footer-col ul li a:hover{color:var(--primary);text-decoration:none;}
.footer-note{
  font-size:.8125rem;
  color:var(--text-3);
  margin:0 0 14px;
  line-height:1.7;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  justify-content:space-between;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
  font-size:.8125rem;
  color:var(--text-3);
}

/* ===================== 入场动效 ===================== */
.reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .4s var(--ease), transform .4s var(--ease);
}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  *{animation:none !important;transition:none !important;}
}

/* ===================== 响应式 ===================== */
@media (max-width:1024px){
  .command-search{display:none;}
  .page-head-grid{grid-template-columns:1fr;gap:32px;}
  .page-head-actions{flex-direction:row;flex-wrap:wrap;align-items:center;padding:22px;}
  .page-head-actions .btn{width:auto;}
  .alt-row{gap:36px;padding:28px 0;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step::after{display:none;}
  .faq-wrap{grid-template-columns:1fr;gap:36px;}
  .side-card{position:static;}
  .cta-banner{grid-template-columns:1fr;padding:40px 32px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}

@media (max-width:900px){
  .nav-links{
    display:none;
  }
  .nav-links.is-open{
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    position:absolute;
    top:100%;
    left:0;
    right:0;
    margin:0;
    padding:14px 24px 22px;
    background:rgba(6,11,20,.97);
    backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line);
    box-shadow:0 20px 40px rgba(0,0,0,.5);
  }
  .nav-links.is-open a{padding:12px 14px;}
  .nav-links.is-open a.active::after{left:14px;right:auto;width:22px;bottom:6px;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .nav-inner{position:relative;}
}

@media (max-width:768px){
  body{font-size:16px;}
  .section{padding:60px 0;}
  .grid-container,.container{padding-left:20px;padding-right:20px;}
  .grid-x.grid-margin-x{margin-left:-10px;margin-right:-10px;}
  .grid-x.grid-margin-x > .cell{padding-left:10px;padding-right:10px;}
  .metric-bar{grid-template-columns:1fr;}
  .metric{border-right:0;border-bottom:1px solid var(--line);}
  .metric:last-child{border-bottom:0;}
  .alt-row{grid-template-columns:1fr;gap:22px;}
  .alt-row.reverse .alt-media{order:1;}
  .alt-row.reverse .alt-body{order:2;}
  .compare-grid{grid-template-columns:1fr;}
  .compare-card::after{display:none;}
  .steps{grid-template-columns:1fr;}
  .cta-banner{padding:32px 22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

@media (max-width:520px){
  h1{font-size:1.75rem;}
  .brand-main{font-size:1.1875rem;}
  .page-head{padding:26px 0 40px;}
  .page-head-actions{padding:18px;}
  .page-head-actions .btn{width:100%;}
  .compare-card{padding:24px 20px;}
  .subscribe-form{flex-direction:column;align-items:stretch;}
  .subscribe-form .btn{width:100%;}
  .icon-btn{display:none;}
}

/* roulang page: category3 */
:root{
  --bg-0:#060B14;
  --bg-1:#0B131F;
  --bg-2:#101B2B;
  --primary:#25D6C4;
  --primary-dark:#12A79A;
  --primary-light:#6FF0E4;
  --violet:#6E7BFF;
  --amber:#FFC46B;
  --text:#EAF2F8;
  --text-2:#9FB0C4;
  --text-3:#6C7E94;
  --glass:rgba(255,255,255,.04);
  --glass-2:rgba(255,255,255,.06);
  --stroke:rgba(255,255,255,.08);
  --stroke-strong:rgba(255,255,255,.16);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow-lg:0 24px 48px rgba(0,0,0,.45);
  --shadow-glow:0 0 32px rgba(37,214,196,.22);
  --ease:cubic-bezier(.22,1,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(900px 520px at 10% -10%, rgba(37,214,196,.14), transparent 62%),
    radial-gradient(760px 460px at 94% 4%, rgba(110,123,255,.12), transparent 64%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .25s var(--ease),text-decoration-color .25s var(--ease);}
a:hover{color:var(--primary-light);text-decoration:underline;text-underline-offset:4px;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:600;letter-spacing:.02em;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
::selection{background:rgba(37,214,196,.28);color:#fff;}
.grid-container{max-width:1240px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}
.site-header,.site-main,.site-footer{position:relative;z-index:1;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:.9375rem;font-weight:600;letter-spacing:.02em;
  padding:12px 26px;border-radius:var(--r-pill);
  border:1px solid transparent;text-decoration:none;cursor:pointer;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),filter .3s var(--ease),border-color .3s var(--ease),color .3s var(--ease),background-color .3s var(--ease);
  white-space:nowrap;line-height:1.4;
}
.btn:hover{text-decoration:none;}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--violet) 135%);
  color:#04110F;
  box-shadow:0 0 24px rgba(37,214,196,.28),inset 0 1px 0 rgba(255,255,255,.28);
}
.btn-primary:hover{
  filter:brightness(1.08);transform:translateY(-2px);
  box-shadow:0 0 36px rgba(37,214,196,.42),inset 0 1px 0 rgba(255,255,255,.32);
  color:#04110F;
}
.btn-ghost{
  background:var(--glass);border-color:var(--stroke-strong);color:var(--text);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary-light);transform:translateY(-2px);}
.btn-link{
  background:none;border:none;padding:0;color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:.9375rem;
}
.btn-link::after{content:"→";transition:transform .3s var(--ease);}
.btn-link:hover{color:var(--primary-light);text-decoration:none;}
.btn-link:hover::after{transform:translateX(5px);}
.btn:focus-visible,.icon-btn:focus-visible,.hamburger:focus-visible,a:focus-visible,button:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;border-radius:var(--r-sm);
}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.btn-sm{padding:8px 18px;font-size:.875rem;}
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,11,20,.72);
  border-bottom:1px solid var(--stroke);
  backdrop-filter:blur(18px);
  transition:background-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,11,20,.9);
  box-shadow:0 14px 34px rgba(0,0,0,.45);
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  min-height:76px;
  transition:min-height .3s var(--ease);
}
.site-header.is-scrolled .header-inner{min-height:66px;}
.brand{display:flex;flex-direction:column;line-height:1.1;text-decoration:none;flex-shrink:0;}
.brand:hover{text-decoration:none;}
.brand-main{
  font-size:1.25rem;font-weight:700;color:var(--text);letter-spacing:.02em;
}
.brand-main em{font-style:normal;color:var(--primary);}
.brand-sub{
  font-size:.625rem;letter-spacing:.42em;color:var(--text-3);text-transform:none;
  margin-top:3px;
}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px;flex:1;}
.nav-links a{
  position:relative;
  display:inline-flex;align-items:center;
  padding:10px 14px;
  font-size:.9375rem;color:var(--text-2);
  border-radius:var(--r-sm);
  transition:color .25s var(--ease),background-color .25s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--violet));
  transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--ease);border-radius:2px;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.04);text-decoration:none;}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--primary-light);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.command-search{
  position:relative;
  display:flex;align-items:center;gap:8px;
  min-width:236px;
  padding:8px 12px 8px 14px;
  background:var(--glass);
  border:1px solid var(--stroke);
  border-radius:var(--r-pill);
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.command-search i{color:var(--text-3);font-size:.8125rem;}
.command-search:focus-within{border-color:rgba(37,214,196,.6);box-shadow:0 0 0 3px rgba(37,214,196,.12);}
.command-search input{
  background:transparent;border:none;outline:none;box-shadow:none;
  color:var(--text);font-size:.875rem;width:100%;height:auto;margin:0;padding:0;
}
.command-search input::placeholder{color:var(--text-3);}
.command-search input:focus{background:transparent;border:none;box-shadow:none;}
.kbd{
  font-size:.6875rem;color:var(--text-3);
  border:1px solid var(--stroke);border-radius:6px;
  padding:1px 6px;white-space:nowrap;
}
.search-panel{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  background:var(--bg-2);border:1px solid var(--stroke);
  border-radius:var(--r-sm);padding:10px;
  box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
  z-index:70;
}
.command-search:focus-within .search-panel{opacity:1;visibility:visible;transform:translateY(0);}
.search-panel a{
  display:block;padding:8px 10px;border-radius:8px;
  color:var(--text-2);font-size:.875rem;
}
.search-panel a:hover{background:rgba(37,214,196,.1);color:var(--primary-light);text-decoration:none;}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:50%;
  background:var(--glass);border:1px solid var(--stroke);
  color:var(--text-2);font-size:.9375rem;
  transition:border-color .3s var(--ease),color .3s var(--ease),transform .3s var(--ease);
}
.icon-btn:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);text-decoration:none;}
.hamburger{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--stroke);
  color:var(--text);font-size:1rem;cursor:pointer;
}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:.8125rem;color:var(--text-3);
  padding:26px 0 0;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:rgba(255,255,255,.18);}
.breadcrumb .current{color:var(--primary);}
.page-head{
  position:relative;
  margin-top:22px;
  padding:48px 44px;
  border-radius:calc(var(--r-lg) + 4px);
  background:
    linear-gradient(120deg, rgba(6,11,20,.94) 0%, rgba(11,19,31,.86) 52%, rgba(16,27,43,.78) 100%),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  border:1px solid var(--stroke);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
}
.page-head::after{
  content:"";position:absolute;right:-90px;bottom:-120px;
  width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle, rgba(37,214,196,.18), transparent 68%);
  pointer-events:none;
}
.page-head h1{
  font-size:clamp(2rem,5vw,3.25rem);
  font-weight:700;line-height:1.25;letter-spacing:.02em;
  max-width:20ch;
}
.page-head .lead{
  margin-top:18px;
  max-width:62ch;
  font-size:1.0625rem;color:var(--text-2);
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.pill{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:.8125rem;color:var(--text-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--stroke);
  transition:border-color .3s var(--ease),color .3s var(--ease);
}
.pill:hover{border-color:rgba(37,214,196,.45);color:var(--primary-light);}
.pill-accent{
  background:rgba(37,214,196,.1);
  border-color:rgba(37,214,196,.3);
  color:var(--primary-light);
}
.pill-amber{
  background:rgba(255,196,107,.08);
  border-color:rgba(255,196,107,.28);
  color:var(--amber);
}
.page-head-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.section{padding:78px 0 0;}
.section-head{max-width:720px;margin-bottom:34px;}
.section-head h2{font-size:clamp(1.5rem,3vw,2.125rem);line-height:1.3;}
.section-head p{margin-top:14px;color:var(--text-2);font-size:1rem;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.75rem;letter-spacing:.28em;color:var(--primary);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary);display:inline-block;}
.glass-card{
  position:relative;
  background:var(--glass);
  border:1px solid var(--stroke);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-lg),inset 0 1px 0 rgba(255,255,255,.06);
  overflow:hidden;
}
.glass-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(37,214,196,.35),rgba(37,214,196,0) 72%);
}
.faq-accordion{border:none;background:transparent;margin:0;}
.faq-accordion .accordion-item{
  border:1px solid var(--stroke);
  border-radius:var(--r-md);
  background:var(--glass);
  backdrop-filter:blur(14px);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.faq-accordion .accordion-item:hover{border-color:var(--stroke-strong);}
.faq-accordion .accordion-item.is-active{
  border-color:rgba(37,214,196,.45);
  box-shadow:0 0 26px rgba(37,214,196,.14);
}
.faq-accordion .accordion-title{
  display:block;position:relative;
  background:transparent;border:none;
  padding:20px 60px 20px 22px;
  color:var(--text);
  font-size:1rem;line-height:1.6;
  transition:color .25s var(--ease);
}
.faq-accordion .accordion-title::before{display:none;}
.faq-accordion .accordion-title:hover{background:rgba(37,214,196,.05);color:var(--primary-light);}
.faq-accordion .accordion-title h3{
  font-size:1.0625rem;font-weight:600;line-height:1.6;margin:0;color:inherit;
}
.faq-accordion .accordion-title:focus{outline:2px solid var(--primary);outline-offset:-2px;}
.faq-icon{
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:50%;
  border:1px solid var(--stroke-strong);
  display:flex;align-items:center;justify-content:center;
  color:var(--primary);
  transition:transform .3s var(--ease),background-color .3s var(--ease),border-color .3s var(--ease);
}
.faq-icon::before{content:"+";font-size:1rem;line-height:1;}
.faq-accordion .accordion-item.is-active .faq-icon{
  transform:translateY(-50%) rotate(45deg);
  background:rgba(37,214,196,.16);
  border-color:var(--primary);
}
.faq-accordion .accordion-content{
  display:block;
  background:transparent;border:none;
  padding:0 56px 22px 22px;
  color:var(--text-2);
  font-size:.9375rem;line-height:1.9;
}
.faq-accordion .accordion-content p:last-child{margin-bottom:0;}
.side-sticky{position:sticky;top:112px;}
.side-card{padding:22px;}
.side-card .thumb{
  border-radius:14px;overflow:hidden;
  aspect-ratio:16/9;margin-bottom:18px;
  border:1px solid var(--stroke);
}
.side-card .thumb img{width:100%;height:100%;object-fit:cover;}
.side-card h3{font-size:1.25rem;margin-bottom:10px;}
.side-card .side-desc{color:var(--text-2);font-size:.9375rem;margin-bottom:18px;}
.check-list{display:grid;gap:12px;margin-bottom:22px;}
.check-list li{
  display:flex;gap:10px;
  font-size:.9375rem;color:var(--text-2);
}
.check-list li i{color:var(--primary);margin-top:6px;font-size:.8125rem;}
.stat-band{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;
  border:1px solid var(--stroke);
  border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(37,214,196,.07),rgba(110,123,255,.05));
  backdrop-filter:blur(12px);
  overflow:hidden;
}
.stat-item{
  padding:30px 28px;
  border-right:1px solid var(--stroke);
}
.stat-item:last-child{border-right:none;}
.stat-item .num{
  font-size:clamp(1.75rem,3vw,2.375rem);
  font-weight:700;color:var(--primary);
  font-family:"DIN Alternate","Segoe UI",sans-serif;
  letter-spacing:.02em;line-height:1.2;
}
.stat-item .num small{font-size:.5em;color:var(--text-2);font-weight:600;margin-left:6px;}
.stat-item .label{margin-top:8px;font-size:.9375rem;color:var(--text-2);}
.step-rail{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step;}
.step-card{
  position:relative;
  padding:28px 24px 26px;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--stroke);
  backdrop-filter:blur(12px);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.step-card::after{
  content:"";position:absolute;top:44px;right:-22px;width:22px;height:1px;
  background:linear-gradient(90deg,rgba(37,214,196,.6),rgba(37,214,196,0));
}
.step-card:last-child::after{display:none;}
.step-card:hover{transform:translateY(-4px);border-color:rgba(37,214,196,.4);box-shadow:var(--shadow-glow);}
.step-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;
  background:rgba(37,214,196,.14);
  border:1px solid rgba(37,214,196,.4);
  color:var(--primary-light);
  font-size:.875rem;font-weight:700;
  margin-bottom:16px;
}
.step-card h3{font-size:1.0625rem;margin-bottom:8px;}
.step-card p{color:var(--text-2);font-size:.9375rem;margin:0;}
.rail-wrap{position:relative;}
.scroll-rail{
  display:flex;gap:24px;
  overflow-x:auto;
  padding:6px 4px 20px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.scroll-rail::-webkit-scrollbar{height:6px;}
.scroll-rail::-webkit-scrollbar-track{background:rgba(255,255,255,.05);border-radius:99px;}
.scroll-rail::-webkit-scrollbar-thumb{background:rgba(37,214,196,.38);border-radius:99px;}
.rail-card{
  flex:0 0 322px;scroll-snap-align:start;
  display:flex;flex-direction:column;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--stroke);
  overflow:hidden;
  backdrop-filter:blur(12px);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.rail-card:hover{transform:translateY(-4px);border-color:rgba(37,214,196,.4);box-shadow:var(--shadow-glow);}
.rail-card .cover{aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);}
.rail-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.rail-card:hover .cover img{transform:scale(1.03);}
.rail-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  align-self:flex-start;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:.75rem;letter-spacing:.04em;
  background:rgba(110,123,255,.14);
  border:1px solid rgba(110,123,255,.3);
  color:#B9C0FF;
  margin-bottom:14px;
}
.badge-teal{background:rgba(37,214,196,.12);border-color:rgba(37,214,196,.32);color:var(--primary-light);}
.rail-card h3{font-size:1.0625rem;line-height:1.55;margin-bottom:10px;}
.rail-card p{color:var(--text-2);font-size:.9375rem;margin-bottom:16px;}
.rail-card .meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:.8125rem;color:var(--text-3);
  border-top:1px solid var(--stroke);padding-top:14px;
}
.rail-card .meta .go{color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.rail-card:hover .meta .go{color:var(--primary-light);}
.cta-band{
  margin-top:78px;
  padding:44px;
  border-radius:calc(var(--r-lg) + 4px);
  background:
    linear-gradient(120deg, rgba(11,19,31,.92), rgba(16,27,43,.86)),
    url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  border:1px solid var(--stroke);
  box-shadow:var(--shadow-lg);
  display:grid;grid-template-columns:1.1fr 1fr;gap:36px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;left:-60px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(110,123,255,.18),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(1.375rem,2.6vw,1.875rem);line-height:1.35;}
.cta-band p{color:var(--text-2);margin-top:12px;font-size:.9375rem;}
.subscribe-form{
  display:flex;gap:12px;align-items:center;
  background:rgba(6,11,20,.6);
  border:1px solid var(--stroke);
  border-radius:var(--r-pill);
  padding:6px 6px 6px 20px;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.subscribe-form:focus-within{border-color:rgba(37,214,196,.6);box-shadow:0 0 0 3px rgba(37,214,196,.12);}
.subscribe-form input{
  flex:1;min-width:0;
  background:transparent;border:none;outline:none;box-shadow:none;
  color:var(--text);font-size:.9375rem;
  margin:0;height:auto;padding:0;
}
.subscribe-form input::placeholder{color:var(--text-3);}
.form-hint{margin-top:12px;font-size:.8125rem;color:var(--text-3);}
.site-footer{
  margin-top:86px;
  background:linear-gradient(180deg,rgba(11,19,31,.85),rgba(6,11,20,.98));
  border-top:1px solid var(--stroke);
  padding:64px 0 26px;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  opacity:.05;pointer-events:none;
}
.footer-grid{
  position:relative;
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.5fr;gap:40px;
}
.footer-brand p{margin-top:16px;color:var(--text-2);font-size:.9375rem;max-width:34ch;}
.footer-col h4{
  font-size:.9375rem;color:var(--text);margin-bottom:16px;font-weight:600;letter-spacing:.04em;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{color:var(--text-2);font-size:.9375rem;}
.footer-col ul a:hover{color:var(--primary);}
.footer-note{color:var(--text-3);font-size:.875rem;margin-bottom:14px;}
.footer-col .subscribe-form{padding:4px 4px 4px 16px;border-radius:var(--r-pill);}
.footer-col .subscribe-form input{font-size:.875rem;}
.footer-bottom{
  position:relative;
  margin-top:52px;padding-top:22px;
  border-top:1px solid var(--stroke);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:.8125rem;color:var(--text-3);
}
.off-canvas{background:var(--bg-1);border-left:1px solid var(--stroke);}
.off-canvas .drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px;border-bottom:1px solid var(--stroke);
}
.off-canvas .drawer-head .close{color:var(--text-2);font-size:1.125rem;background:none;border:none;cursor:pointer;}
.drawer-nav{display:grid;gap:6px;padding:20px;}
.drawer-nav a{
  padding:12px 14px;border-radius:var(--r-sm);
  color:var(--text-2);font-size:.9375rem;
  border:1px solid transparent;
}
.drawer-nav a:hover,.drawer-nav a.active{
  color:var(--primary-light);background:rgba(37,214,196,.08);border-color:rgba(37,214,196,.28);
  text-decoration:none;
}
.drawer-cta{padding:0 20px 24px;}
.drawer-cta .btn{width:100%;}
.reveal-up{opacity:0;transform:translateY(14px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal-up.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important;}
  html{scroll-behavior:auto;}
  .reveal-up{opacity:1;transform:none;}
}
@media (max-width:1080px){
  .nav-links a{padding:10px 10px;font-size:.875rem;}
  .command-search{min-width:188px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-col:last-child{grid-column:1 / -1;}
  .step-rail{grid-template-columns:repeat(2,1fr);}
  .step-card:nth-child(2n)::after{display:none;}
}
@media (max-width:900px){
  .nav-links,.command-search,.icon-btn{display:none;}
  .hamburger{display:inline-flex;}
  .header-inner{min-height:68px;}
  .page-head{padding:38px 26px;}
  .cta-band{grid-template-columns:1fr;padding:34px 26px;}
  .stat-band{grid-template-columns:1fr;}
  .stat-item{border-right:none;border-bottom:1px solid var(--stroke);}
  .stat-item:last-child{border-bottom:none;}
  .side-sticky{position:static;}
}
@media (max-width:640px){
  body{font-size:15px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .section{padding:56px 0 0;}
  .page-head{padding:30px 20px;border-radius:var(--r-lg);}
  .page-head h1{font-size:1.75rem;}
  .page-head .lead{font-size:1rem;}
  .page-head-actions .btn{width:100%;}
  .step-rail{grid-template-columns:1fr;}
  .step-card::after{display:none;}
  .rail-card{flex:0 0 262px;}
  .footer-grid{grid-template-columns:1fr;gap:34px;}
  .footer-bottom{flex-direction:column;}
  .cta-band{padding:28px 20px;margin-top:56px;}
  .subscribe-form{flex-direction:column;align-items:stretch;border-radius:var(--r-md);padding:14px;}
  .subscribe-form .btn{width:100%;}
  .faq-accordion .accordion-title{padding:18px 54px 18px 18px;}
  .faq-accordion .accordion-content{padding:0 44px 20px 18px;}
}