/* roulang page: index */
:root{
  --c-deep:#0A1220;
  --c-deep-2:#060C16;
  --c-deep-text:#E8EDF6;
  --c-deep-sub:#9AA8BF;
  --c-neon:#2CE0A6;
  --c-primary:#1D5BE0;
  --c-primary-hover:#1648B8;
  --c-primary-soft:#EAF1FF;
  --c-convert:#FF6A2B;
  --c-convert-hover:#E4551A;
  --c-bg:#F5F7FB;
  --c-surface:#FFFFFF;
  --c-line:#E4E9F2;
  --c-ink:#0E1726;
  --c-sub:#55637A;
  --c-place:#98A2B3;
  --c-error:#E5484D;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(15,23,42,.05),0 10px 28px -16px rgba(15,23,42,.18);
  --shadow-2:0 2px 6px rgba(15,23,42,.06),0 22px 44px -20px rgba(15,23,42,.28);
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Inter","DIN Alternate",ui-monospace,SFMono-Regular,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
  --pad-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-primary-hover)}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25}
h2{font-size:clamp(22px,3vw,32px);line-height:1.3}
h3{font-size:20px;line-height:1.45;font-weight:600}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.section{padding:var(--pad-section) 0}
.section--tight{padding-top:64px}
.section-head{max-width:720px;margin-bottom:40px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.01em;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:var(--r-pill);
  padding:5px 12px;font-weight:600;margin-bottom:14px;
}
.section-head p{margin:14px 0 0;color:var(--c-sub);font-size:15px}
.mono-tag{font-family:var(--font-num);font-size:12.5px;color:var(--c-place);letter-spacing:.01em}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1.5px solid transparent;transition:all .2s var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--c-primary);color:#fff}
.btn--primary:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-1)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn--ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);transform:translateY(-2px)}
.btn--ghost:active{transform:translateY(0)}
.btn--convert{background:var(--c-convert);color:#fff}
.btn--convert:hover{background:var(--c-convert-hover);color:#fff;transform:translateY(-2px)}
.btn--convert:active{transform:translateY(0)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 顶栏 ---------- */
.topbar{
  background:var(--c-deep-2);color:var(--c-deep-sub);
  font-size:12.5px;line-height:1;height:36px;display:flex;align-items:center;
}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar strong{color:var(--c-deep-text);font-weight:600}
.topbar .topbar-links{display:flex;gap:18px}
.topbar a{color:var(--c-deep-sub)}
.topbar a:hover{color:#fff}
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,18,32,.92);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,var(--c-neon),transparent);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-deep-text);font-weight:700;font-size:17px;letter-spacing:.01em}
.brand:hover{color:#fff}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  background:linear-gradient(140deg,var(--c-primary),#0B2E7A);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 1.5px rgba(44,224,166,.35) inset;
}
.brand-mark svg{width:18px;height:18px}
.brand small{display:block;font-size:11px;font-weight:500;color:var(--c-deep-sub);letter-spacing:.02em}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;display:block;padding:10px 14px;border-radius:8px;
  font-size:15px;font-weight:600;color:#C8D3E4;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--c-neon);text-shadow:0 0 12px rgba(44,224,166,.5)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--c-neon);border-radius:2px;box-shadow:0 0 10px rgba(44,224,166,.7);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-cta{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;color:var(--c-neon);
  border:1.5px solid rgba(44,224,166,.55);background:rgba(44,224,166,.06);
  transition:all .2s var(--ease);
}
.nav-cta:hover{background:rgba(44,224,166,.16);color:#fff;border-color:var(--c-neon)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#E8EDF6;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#E8EDF6;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(10,18,32,.6);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;z-index:80;
  background:var(--c-deep);border-left:1px solid rgba(44,224,166,.25);
  padding:24px 20px;transform:translateX(100%);
  transition:transform .28s var(--ease);overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-head .brand{font-size:16px}
.drawer-close{width:40px;height:40px;border-radius:10px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);color:#E8EDF6;font-size:18px;cursor:pointer}
.drawer-link{
  display:block;padding:14px 14px;border-radius:10px;color:#C8D3E4;
  font-size:15px;font-weight:600;border-left:3px solid transparent;
}
.drawer-link:hover{background:rgba(255,255,255,.06);color:#fff}
.drawer-link.is-active{color:var(--c-neon);border-left-color:var(--c-neon);background:rgba(44,224,166,.07)}
.drawer .btn{width:100%;margin-top:22px}

/* ---------- Hero ---------- */
.hero{
  position:relative;background:var(--c-bg);padding:72px 0 0;overflow:hidden;
}
.hero .deco{
  position:absolute;pointer-events:none;border:1.5px solid rgba(29,91,224,.12);border-radius:50%;
}
.hero .deco-1{width:520px;height:520px;right:-160px;top:-140px}
.hero .deco-2{width:320px;height:320px;right:60px;top:120px;border-color:rgba(44,224,166,.12)}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.hero-copy h1{margin-bottom:18px}
.hero-copy h1 em{
  font-style:normal;color:var(--c-primary);
  background:linear-gradient(180deg,transparent 62%,rgba(29,91,224,.14) 62%);
}
.hero-sub{font-size:17px;color:var(--c-sub);max-width:520px;margin-bottom:28px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:var(--r-pill);padding:5px 12px;
}
.tag--neon{color:#0A6B4C;background:rgba(44,224,166,.16)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-visual{position:relative}
.hero-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:16/10;box-shadow:var(--shadow-2);
  border:1px solid var(--c-line);background:#DDE5F3;
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-flag{
  position:absolute;top:-14px;right:-10px;z-index:2;
  background:var(--c-deep);color:var(--c-neon);
  border:1px solid rgba(44,224,166,.45);border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;padding:7px 14px;
  box-shadow:0 8px 22px -12px rgba(10,18,32,.6);
}
.hero-stats{
  position:relative;margin-top:56px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);
  display:grid;grid-template-columns:repeat(3,1fr);
}
.hero-stat{padding:26px 28px;border-right:1px solid var(--c-line)}
.hero-stat:last-child{border-right:0}
.hero-stat .value{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:30px;font-weight:700;color:var(--c-ink);line-height:1.1}
.hero-stat .value span{font-size:15px;color:var(--c-sub);font-weight:600;margin-left:4px}
.hero-stat .label{font-size:12.5px;color:var(--c-place);margin-top:8px;letter-spacing:.01em}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative}
.steps::before{
  content:"";position:absolute;top:52px;left:12%;right:12%;height:1px;
  background:rgba(29,91,224,.2);
}
.step-card{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:30px 26px;box-shadow:var(--shadow-1);
  transition:all .2s var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(29,91,224,.2)}
.step-no{position:relative;height:52px;margin-bottom:16px}
.step-no .ghost{
  position:absolute;left:0;top:-8px;font-family:var(--font-num);
  font-size:54px;font-weight:700;line-height:1;color:rgba(29,91,224,.25);
}
.step-no .real{
  position:absolute;left:4px;top:8px;font-family:var(--font-num);
  font-size:22px;font-weight:700;color:var(--c-neon);
  text-shadow:0 0 14px rgba(44,224,166,.35);
}
.step-card h3{margin-bottom:10px}
.step-card p{color:var(--c-sub);font-size:14.5px;margin:0}

/* ---------- 能力 2+1 ---------- */
.cap-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:stretch}
.cap-stack{display:grid;gap:24px}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);box-shadow:var(--shadow-1);
  transition:all .2s var(--ease);overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(29,91,224,.2)}
.card-wide{display:grid;grid-template-columns:1fr 180px;gap:0;align-items:stretch}
.card-wide .card-body{padding:28px}
.card-wide figure{margin:0;height:100%;min-height:160px}
.card-wide figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:1/1}
.card-tall{display:flex;flex-direction:column}
.card-tall figure{margin:0;aspect-ratio:16/10;overflow:hidden}
.card-tall figure img{width:100%;height:100%;object-fit:cover}
.card-tall .card-body{padding:30px 28px;display:flex;flex-direction:column;flex:1}
.card h3{margin-bottom:10px}
.card p{color:var(--c-sub);font-size:14.5px;margin:0 0 16px}
.icon-badge{
  width:44px;height:44px;border-radius:12px;background:var(--c-primary-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.icon-badge svg{width:22px;height:22px;stroke:var(--c-primary);fill:none;stroke-width:1.7}
.mini-list{display:grid;gap:10px;margin-top:auto}
.mini-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--c-sub)}
.mini-list li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--c-neon);
  margin-top:9px;flex:0 0 6px;
}

/* ---------- 交错图文 ---------- */
.alt-rows{display:grid;gap:32px;margin-top:32px}
.alt-row{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow-1);
}
.alt-row:nth-child(even) .alt-copy{order:2}
.alt-row figure{margin:0;border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/10}
.alt-row figure img{width:100%;height:100%;object-fit:cover}
.alt-copy{padding:8px 12px}
.alt-copy h3{margin-bottom:12px}
.alt-copy p{color:var(--c-sub);font-size:15px;margin-bottom:16px}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- 案例 ---------- */
.proof-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;align-items:stretch}
.proof-main{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;
}
.proof-main figure{margin:0;aspect-ratio:16/9;overflow:hidden}
.proof-main figure img{width:100%;height:100%;object-fit:cover}
.proof-main .proof-body{padding:30px 30px 34px}
.quote{
  border-left:3px solid var(--c-neon);padding-left:16px;
  font-size:16px;color:var(--c-ink);line-height:1.8;
}
.proof-side{display:grid;gap:24px}
.proof-mini{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--shadow-1);transition:all .2s var(--ease);
}
.proof-mini:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(29,91,224,.2)}
.proof-mini p{font-size:15px;color:var(--c-ink);margin-bottom:14px}
.sign{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--c-place)}
.sign .dot{width:26px;height:26px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:12px;font-family:var(--font-num)}

/* ---------- 内容列表 ---------- */
.news-wrap{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:40px;align-items:start}
.post-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);overflow:hidden;transition:all .2s var(--ease);
  height:100%;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(29,91,224,.2)}
.post-card figure{margin:0;aspect-ratio:16/9;overflow:hidden;background:#E9EEF8}
.post-card figure img{width:100%;height:100%;object-fit:cover}
.post-body{padding:20px;display:flex;flex-direction:column;flex:1}
.post-badge{
  align-self:flex-start;font-size:12px;font-weight:600;color:var(--c-primary);
  background:rgba(29,91,224,.1);border-radius:var(--r-pill);padding:4px 10px;margin-bottom:12px;
}
.post-title{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--c-ink);margin:0 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card:hover .post-title{color:var(--c-primary)}
.post-summary{
  font-size:14px;color:var(--c-sub);margin:0 0 18px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  border-top:1px solid var(--c-line);padding-top:14px;font-size:12.5px;color:var(--c-place);
}
.post-foot .read{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600}
.post-foot svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;transition:transform .2s var(--ease)}
.post-card:hover .post-foot svg{transform:translateX(3px)}
.timeline{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);padding:26px 24px;
}
.timeline h3{font-size:17px;margin-bottom:20px}
.tl-list{position:relative;padding-left:18px}
.tl-list::before{content:"";position:absolute;left:4px;top:6px;bottom:6px;width:2px;background:var(--c-line)}
.tl-item{position:relative;padding:0 0 18px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-18px;top:7px;width:6px;height:6px;border-radius:50%;
  background:var(--c-neon);box-shadow:0 0 0 3px rgba(44,224,166,.14);
}
.tl-date{font-family:var(--font-num);font-size:12.5px;color:var(--c-place);letter-spacing:.01em}
.tl-title{
  display:block;font-size:14px;color:var(--c-ink);font-weight:500;line-height:1.5;margin-top:4px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.tl-title:hover{color:var(--c-primary)}
.empty-state{
  border:1.5px dashed var(--c-line);border-radius:var(--r-md);
  padding:40px 24px;text-align:center;background:var(--c-surface);min-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
}
.empty-state svg{width:52px;height:52px;stroke:var(--c-place);fill:none;stroke-width:1.4;opacity:.7}
.empty-state p{color:var(--c-sub);font-size:14.5px;margin:0}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:780px;margin:0 auto}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item.is-open{border-color:rgba(29,91,224,.35);box-shadow:var(--shadow-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;padding:20px 22px;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);
}
.faq-item.is-open .faq-q{color:var(--c-primary)}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;position:relative;
  transition:transform .25s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
  top:50%;left:50%;transform:translate(-50%,-50%);
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px;transition:opacity .2s var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s var(--ease)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a > div{overflow:hidden}
.faq-a p{margin:0;padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--c-sub)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;background:var(--c-deep);color:var(--c-deep-text);
  border-radius:var(--r-lg);overflow:hidden;padding:52px;
  display:grid;grid-template-columns:1.15fr 1fr;gap:44px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--c-neon),transparent);opacity:.7;
}
.cta-band h2{color:#fff;margin-bottom:14px}
.cta-band p{color:var(--c-deep-sub);font-size:15px;margin:0}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.cta-points span{
  font-size:12.5px;color:var(--c-deep-text);border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-pill);padding:5px 12px;background:rgba(255,255,255,.04);
}
.form-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-md);padding:26px;
}
.form-row{margin-bottom:16px}
.form-row label{display:block;font-size:14px;color:var(--c-deep-text);margin-bottom:8px;font-weight:500}
.form-row input,.form-row select{
  width:100%;height:48px;border-radius:var(--r-sm);padding:0 14px;font-size:15px;
  font-family:inherit;color:#fff;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);transition:all .2s var(--ease);
}
.form-row input::placeholder{color:#8695AD}
.form-row select option{color:#0E1726}
.form-row input:focus,.form-row select:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(29,91,224,.25);
  background:rgba(255,255,255,.12);
}
.form-note{font-size:12.5px;color:var(--c-deep-sub);margin:12px 0 0}
.form-card .btn{width:100%}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-deep);color:var(--c-deep-sub);margin-top:0;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--c-deep-sub);margin:0;max-width:280px;line-height:1.7}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:18px}
.footer-col li{margin-bottom:11px}
.footer-col a{color:var(--c-deep-sub);font-size:14px}
.footer-col a:hover{color:#fff}
.footer-col .plain{font-size:14px;color:var(--c-deep-sub);line-height:1.7}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#7D8CA6;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--pad-section:72px}
  .hero-grid{gap:40px}
  .cta-band{padding:44px;gap:32px}
}
@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .hero{padding-top:56px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-sub{max-width:none}
  .cap-grid{grid-template-columns:1fr}
  .proof-grid{grid-template-columns:1fr}
  .news-wrap{grid-template-columns:1fr;gap:28px}
  .cta-band{grid-template-columns:1fr;padding:38px 30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--pad-section:56px}
  .container{padding:0 16px}
  .section--tight{padding-top:44px}
  .hero-stats{grid-template-columns:1fr}
  .hero-stat{border-right:0;border-bottom:1px solid var(--c-line);padding:20px 22px}
  .hero-stat:last-child{border-bottom:0}
  .steps{grid-template-columns:1fr;gap:16px}
  .steps::before{left:10px;right:auto;top:40px;bottom:40px;width:1px;height:auto}
  .step-card{margin-left:0}
  .post-grid{grid-template-columns:1fr}
  .alt-row{grid-template-columns:1fr;gap:20px}
  .alt-row:nth-child(even) .alt-copy{order:0}
  .card-wide{grid-template-columns:1fr}
  .card-wide figure{aspect-ratio:16/9}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .hero-flag{right:8px;top:8px}
  .topbar{font-size:12px}
  .topbar .topbar-links{display:none}
  .faq-q{font-size:15px;padding:18px}
  .faq-a p{padding:0 18px 18px}
  .cta-band{padding:30px 20px}
}

/* roulang page: article */
:root{
  --c-deep:#0A1220;
  --c-deep-2:#0E1B2E;
  --c-neon:#2CE0A6;
  --c-primary:#1D5BE0;
  --c-primary-hover:#1648B8;
  --c-primary-soft:#EAF1FF;
  --c-convert:#FF6A2B;
  --c-convert-hover:#E4551A;
  --c-bg:#F5F7FB;
  --c-surface:#FFFFFF;
  --c-line:#E4E9F2;
  --c-ink:#0E1726;
  --c-ink-2:#55637A;
  --c-ink-3:#98A2B3;
  --c-error:#E5484D;
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Inter","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --shadow-1:0 1px 2px rgba(15,23,42,.05),0 10px 28px -16px rgba(15,23,42,.18);
  --shadow-2:0 2px 4px rgba(15,23,42,.06),0 18px 40px -18px rgba(15,23,42,.24);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-section:96px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
svg{display:block}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--sp-section) 0}
.section--tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(22px,3vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:12px;color:var(--c-ink-2);font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.08em;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-neon)}

/* ---------- 顶部信息条 ---------- */
.topbar{background:#070E19;color:#9AA8BF;font-size:12.5px;line-height:1.5}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;flex-wrap:wrap}
.topbar strong{color:#E8EDF6;font-weight:600}
.topbar-list{display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.topbar-list span{display:inline-flex;align-items:center;gap:6px}
.dot-neon{width:6px;height:6px;border-radius:50%;background:var(--c-neon);box-shadow:0 0 10px rgba(44,224,166,.7)}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(10,18,32,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(44,224,166,.85),transparent);
}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#E8EDF6;font-weight:700;font-size:17px;letter-spacing:.01em}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:rgba(44,224,166,.1);border:1px solid rgba(44,224,166,.35);
}
.brand-mark svg{width:18px;height:18px}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:8px;font-size:15px;font-weight:600;color:#C8D3E4;
  transition:color 200ms var(--ease),background 200ms var(--ease);
}
.nav-link:hover{color:#FFFFFF;background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--c-neon);text-shadow:0 0 12px rgba(44,224,166,.5)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-neon);box-shadow:0 0 10px rgba(44,224,166,.7);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:var(--r-sm);border:1.5px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;text-align:center;
  transition:background 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease),box-shadow 200ms var(--ease);
}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 10px 24px -14px rgba(29,91,224,.85)}
.btn-primary:hover{background:var(--c-primary-hover);transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-soft)}
.btn-convert{background:var(--c-convert);color:#fff}
.btn-convert:hover{background:var(--c-convert-hover);transform:translateY(-2px)}
.btn-outline-neon{background:transparent;border-color:rgba(44,224,166,.6);color:var(--c-neon)}
.btn-outline-neon:hover{background:rgba(44,224,166,.12)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:999px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:1.8px;background:#E8EDF6;margin:4px auto;border-radius:2px}
.nav-mask{position:fixed;inset:0;background:rgba(10,18,32,.6);opacity:0;visibility:hidden;transition:opacity 220ms var(--ease);z-index:70}
.nav-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:280px;max-width:86vw;z-index:80;
  background:var(--c-deep);border-left:1px solid rgba(255,255,255,.08);
  padding:24px 20px;transform:translateX(102%);transition:transform 260ms var(--ease);
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer .drawer-title{color:#9AA8BF;font-size:12.5px;letter-spacing:.08em;margin-bottom:14px}
.nav-drawer a{
  display:block;padding:13px 12px;border-radius:10px;color:#C8D3E4;font-weight:600;font-size:15px;
  border-left:3px solid transparent;transition:background 200ms var(--ease),color 200ms var(--ease);
}
.nav-drawer a:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-drawer a.is-active{color:var(--c-neon);border-left-color:var(--c-neon);background:rgba(44,224,166,.08)}
.drawer-close{
  position:absolute;top:14px;right:14px;width:40px;height:40px;border-radius:10px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);color:#E8EDF6;cursor:pointer;font-size:18px;line-height:1;
}

/* ---------- 面包屑 ---------- */
.crumbs{padding:22px 0 0}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--c-ink-3);align-items:center}
.crumbs li{display:inline-flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:#C3CCDB}
.crumbs a{color:var(--c-ink-2)}
.crumbs a:hover{color:var(--c-primary)}
.crumbs .current{color:var(--c-primary);font-weight:600}

/* ---------- 文章 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;padding-top:28px;padding-bottom:var(--sp-section)}
.article-head .cat-badge{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(29,91,224,.1);color:var(--c-primary);
  border-radius:999px;padding:5px 12px;font-size:12px;font-weight:600;
}
.article-head h1{
  font-size:clamp(28px,4vw,40px);line-height:1.28;font-weight:700;letter-spacing:-.015em;
  margin-top:18px;
}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:16px;font-size:13.5px;color:var(--c-ink-2);align-items:center}
.article-meta .num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.meta-sep{width:4px;height:4px;border-radius:50%;background:#C3CCDB}
.article-figure{margin:28px 0 0;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--c-line);background:#fff}
.article-figure img{width:100%;aspect-ratio:16/9;border-radius:0}
.article-figure figcaption{padding:12px 16px;font-size:12.5px;color:var(--c-ink-3);border-top:1px solid var(--c-line)}

.article-body{
  margin-top:32px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:36px 34px;box-shadow:var(--shadow-1);
}
.article-body>*+*{margin-top:1.2em}
.article-body p{font-size:16.5px;line-height:1.88;color:#1B2434}
.article-body h2{
  font-size:clamp(21px,2.6vw,26px);line-height:1.35;font-weight:700;
  margin-top:40px;margin-bottom:16px;color:var(--c-ink);position:relative;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:3px;background:var(--c-neon);
}
.article-body h3{font-size:19px;line-height:1.45;font-weight:600;margin-top:28px;margin-bottom:12px}
.article-body ul{list-style:none;padding-left:0}
.article-body ul>li{position:relative;padding-left:20px;margin-top:10px;font-size:16px;line-height:1.85;color:#1B2434}
.article-body ul>li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--c-neon);
}
.article-body ol{list-style:decimal;padding-left:22px}
.article-body ol>li{margin-top:10px;font-size:16px;line-height:1.85;color:#1B2434}
.article-body blockquote{
  margin:26px 0;padding:16px 20px;background:#F7F9FE;border-left:3px solid var(--c-neon);
  border-radius:0 12px 12px 0;color:#33405A;font-size:15.5px;
}
.article-body img{border-radius:14px;margin:24px 0}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:12.5px;color:var(--c-ink-3);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left}
.article-body th{background:#F7F9FE;font-weight:600;color:var(--c-ink)}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--c-primary-hover)}
.article-body strong{font-weight:600}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:32px 0}

.empty-state{
  border:1.5px dashed var(--c-line);border-radius:var(--r-md);
  padding:40px 24px;text-align:center;background:#FBFCFE;
}
.empty-state svg{margin:0 auto 14px}
.empty-state p{font-size:15px;color:var(--c-ink-2)}
.empty-state .btn{margin-top:18px}

/* ---------- 侧栏 ---------- */
.side-col{display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:15px;font-weight:600;margin-bottom:14px}
.side-card h3 span{display:block;font-size:12.5px;color:var(--c-ink-3);font-weight:400;margin-top:4px}
.side-links li+li{margin-top:2px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:10px;font-size:14.5px;color:var(--c-ink-2);
  transition:background 200ms var(--ease),color 200ms var(--ease);
}
.side-links a:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.side-links svg{width:14px;height:14px;flex:none}
.side-cta{background:var(--c-deep);border-color:rgba(255,255,255,.1);color:#E8EDF6}
.side-cta h3{color:#fff}
.side-cta p{font-size:13.5px;color:#9AA8BF;line-height:1.7;margin-bottom:16px}
.side-cta .btn{width:100%}

/* ---------- 标签与推荐 ---------- */
.article-foot{margin-top:32px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  background:#F1F4FA;color:var(--c-ink-2);font-size:13px;border:1px solid var(--c-line);
}
.tag:hover{background:var(--c-primary-soft);color:var(--c-primary);border-color:rgba(29,91,224,.25)}
.back-link{display:inline-flex;align-items:center;gap:8px;margin-top:22px;font-size:14.5px;font-weight:600;color:var(--c-primary)}
.back-link:hover{color:var(--c-primary-hover)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:24px}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;height:100%;
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(29,91,224,.2)}
.card-img{position:relative;overflow:hidden;background:#EEF2F9}
.card-img img{width:100%;aspect-ratio:16/9}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;font-weight:600;line-height:1.5}
.card-body p{font-size:14px;color:var(--c-ink-2);line-height:1.7}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--c-ink-3);
}
.card-foot .num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.card-foot .arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600}
.card-foot .arrow svg{width:14px;height:14px;transition:transform 200ms var(--ease)}
.card:hover .card-foot .arrow svg{transform:translateX(3px)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:780px;margin:0 auto}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.faq-item:hover{border-color:rgba(29,91,224,.2)}
.faq-item.is-open{box-shadow:var(--shadow-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);transition:color 200ms var(--ease);
}
.faq-item.is-open .faq-q{color:var(--c-primary)}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);
  display:grid;place-items:center;font-size:16px;line-height:1;transition:transform 240ms var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms var(--ease)}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,#0A1220 0%,#12233D 60%,#0A1220 100%);
  border-radius:var(--r-lg);padding:44px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);
  gap:36px;align-items:center;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  border:1.5px solid rgba(44,224,166,.12);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.8vw,30px);line-height:1.32;font-weight:700}
.cta-band p{color:#9AA8BF;font-size:15px;margin-top:14px;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;position:relative;z-index:1}
.cta-actions .btn{min-width:180px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-deep);color:#9AA8BF;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.4fr .8fr .8fr 1fr;gap:36px;padding:64px 0 40px;
}
.footer-brand .brand{color:#E8EDF6}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;max-width:280px}
.footer-col h4{color:#E8EDF6;font-size:14px;font-weight:600;margin-bottom:16px}
.footer-col ul li+li{margin-top:10px}
.footer-col a{font-size:14px;color:#9AA8BF;transition:color 200ms var(--ease)}
.footer-col a:hover{color:#FFFFFF}
.footer-col .plain{font-size:14px;line-height:2}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0 32px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:12.5px;color:#7C8AA3;
}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,820px) 300px;justify-content:center;gap:48px}
  .side-col{position:sticky;top:96px;align-self:start}
}
@media (max-width:1180px){
  :root{--sp-section:72px}
}
@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-toggle{display:block}
  .nav-actions .btn{display:none}
  .cta-band{grid-template-columns:1fr;padding:32px}
  .cta-actions{justify-content:flex-start}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  :root{--sp-section:56px}
  .container{padding:0 16px}
  .article-body{padding:24px 20px;border-radius:var(--r-md)}
  .article-body p{font-size:16px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;padding:48px 0 32px}
  .topbar .container{justify-content:flex-start}
  .topbar-list{gap:12px}
}
@media (max-width:520px){
  .article-head h1{font-size:26px}
  .btn{width:100%}
  .cta-actions .btn{min-width:0}
  .nav-actions{gap:8px}
  .card-foot{flex-wrap:wrap;gap:8px}
}

/* roulang page: category1 */
:root{
  --c-deep:#0A1220;
  --c-deep-ink:#E8EDF6;
  --c-deep-sub:#9AA8BF;
  --c-neon:#2CE0A6;
  --c-primary:#1D5BE0;
  --c-primary-hover:#1648B8;
  --c-primary-soft:#EAF1FF;
  --c-convert:#FF6A2B;
  --c-convert-hover:#E4551A;
  --c-bg:#F5F7FB;
  --c-surface:#FFFFFF;
  --c-line:#E4E9F2;
  --c-ink:#0E1726;
  --c-sub:#55637A;
  --c-place:#98A2B3;
  --c-error:#E5484D;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --shadow-1:0 1px 2px rgba(15,23,42,.05),0 10px 28px -16px rgba(15,23,42,.18);
  --shadow-2:0 2px 6px rgba(15,23,42,.06),0 20px 40px -20px rgba(15,23,42,.28);
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Inter","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.75;color:var(--c-ink);background:var(--c-bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;object-fit:cover}
a{color:var(--c-primary);text-decoration:none}
a:hover{color:var(--c-primary-hover)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button,input,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
body.no-scroll{overflow:hidden}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-sm{padding:72px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(22px,3vw,32px);line-height:1.3;font-weight:700}
.section-head p{margin-top:12px;color:var(--c-sub);font-size:15px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.01em;color:var(--c-primary);font-weight:600;background:var(--c-primary-soft);border-radius:999px;padding:6px 14px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-neon)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ============ 顶栏与导航 ============ */
.site-header{position:sticky;top:0;z-index:50}
.topbar{background:var(--c-deep);border-bottom:1px solid rgba(255,255,255,.06)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:36px;font-size:12.5px;color:var(--c-deep-sub)}
.topbar-note{color:#C8D3E4}
.topbar-meta{display:flex;align-items:center;gap:8px}
.topbar-meta::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-neon);box-shadow:0 0 10px rgba(44,224,166,.7)}
.nav-bar{background:rgba(10,18,32,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);position:relative}
.nav-bar::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,var(--c-neon),transparent);opacity:.75}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-deep-ink);font-weight:700;font-size:17px;letter-spacing:.01em;flex-shrink:0}
.brand:hover{color:#fff}
.brand-mark{width:32px;height:32px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;background:rgba(44,224,166,.1);border:1px solid rgba(44,224,166,.35)}
.brand-mark svg{width:20px;height:20px}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:8px;font-size:15px;font-weight:600;color:#C8D3E4;transition:color .2s var(--ease),background .2s var(--ease)}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--c-neon);text-shadow:0 0 12px rgba(44,224,166,.5)}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--c-neon);box-shadow:0 0 10px rgba(44,224,166,.8)}
.nav-actions{display:flex;align-items:center;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-sm);border:1.5px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);white-space:nowrap}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);transform:translateY(-2px)}
.btn-convert{background:var(--c-convert);color:#fff}
.btn-convert:hover{background:var(--c-convert-hover);color:#fff;transform:translateY(-2px)}
.btn-nav{height:40px;padding:0 18px;border-radius:999px;border-color:rgba(44,224,166,.55);color:var(--c-neon);background:rgba(44,224,166,.08)}
.btn-nav:hover{background:rgba(44,224,166,.16);color:#fff;border-color:var(--c-neon)}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);cursor:pointer;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:#E8EDF6;border-radius:2px;position:relative;transition:background .2s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#E8EDF6;border-radius:2px;transition:transform .2s var(--ease)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.drawer-mask{position:fixed;inset:0;background:rgba(10,18,32,.6);opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);z-index:55}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ 面包屑与页头 ============ */
.crumb-bar{padding:20px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-sub)}
.breadcrumb a{color:var(--c-sub)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:var(--c-place)}
.breadcrumb .current{color:var(--c-primary);font-weight:600}
.page-head{position:relative;margin-top:16px;padding:56px 0 64px;background:linear-gradient(96deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.86) 52%,rgba(255,255,255,.62) 100%),url('/assets/images/backpic/back-2.png') center/cover no-repeat;border-bottom:1px solid var(--c-line);overflow:hidden}
.page-head::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border:1.5px solid rgba(29,91,224,.12);border-radius:50%;pointer-events:none}
.page-head-inner{position:relative;max-width:820px}
.page-head h1{margin-top:16px;font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:700}
.page-head .lead{margin-top:16px;max-width:700px;color:var(--c-sub);font-size:16px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary);font-size:12.5px;font-weight:600;border:1px solid rgba(29,91,224,.14)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

/* ============ 主体：左简介 + 右要点清单 ============ */
.split{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:32px;align-items:start}
.side-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);padding:28px}
.side-card h2{font-size:20px;line-height:1.45;font-weight:600}
.side-card p{margin-top:14px;color:var(--c-sub);font-size:15px}
.side-card p + p{margin-top:12px}
.side-figure{margin-top:24px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--c-line)}
.side-figure img{width:100%;aspect-ratio:16/10;height:auto}
.side-note{margin-top:16px;font-size:12.5px;color:var(--c-place)}
.side-list{margin-top:20px;display:grid;gap:10px}
.side-list li{display:flex;gap:10px;font-size:14px;color:var(--c-sub)}
.side-list li::before{content:"";width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--c-neon);flex-shrink:0}
.point-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);padding:32px}
.point-card-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;padding-bottom:20px;border-bottom:1px solid var(--c-line)}
.point-card-head h2{font-size:clamp(20px,2.4vw,26px);line-height:1.35;font-weight:700}
.point-card-head .meta{font-size:12.5px;color:var(--c-place)}
.point-list{margin-top:8px}
.point-item{display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;padding:22px 0;border-bottom:1px dashed var(--c-line);transition:background .2s var(--ease)}
.point-item:last-child{border-bottom:0}
.point-item:hover{background:#FBFCFE}
.point-num{position:relative;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:34px;font-weight:700;line-height:1;color:rgba(29,91,224,.25)}
.point-num b{position:absolute;left:0;top:12px;font-size:18px;color:var(--c-primary)}
.point-item h3{font-size:17px;font-weight:600;line-height:1.45}
.point-item p{margin-top:8px;font-size:14px;color:var(--c-sub)}
.point-foot{margin-top:22px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;padding-top:20px;border-top:1px solid var(--c-line)}
.point-foot span{font-size:13px;color:var(--c-place)}

/* ============ 步骤时间线 ============ */
.steps-wrap{display:grid;gap:0}
.step-row{display:grid;grid-template-columns:56px minmax(0,1fr);gap:20px;position:relative;padding-bottom:32px}
.step-row:last-child{padding-bottom:0}
.step-row::before{content:"";position:absolute;left:27px;top:52px;bottom:0;width:2px;background:linear-gradient(180deg,rgba(44,224,166,.65),rgba(29,91,224,.15))}
.step-row:last-child::before{display:none}
.step-dot{width:54px;height:54px;border-radius:16px;background:var(--c-surface);border:1px solid var(--c-line);box-shadow:var(--shadow-1);display:flex;align-items:center;justify-content:center;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-weight:700;color:var(--c-primary)}
.step-body{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);padding:22px 24px;box-shadow:var(--shadow-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.step-body:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(29,91,224,.28)}
.step-body h3{font-size:17px;font-weight:600}
.step-body p{margin-top:8px;font-size:14px;color:var(--c-sub)}

/* ============ 数据条网格 ============ */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:36px}
.stat-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);padding:24px;box-shadow:var(--shadow-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(29,91,224,.28)}
.stat-card .k{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;font-weight:700;color:var(--c-neon);letter-spacing:.02em}
.stat-card h3{margin-top:12px;font-size:18px;font-weight:600}
.stat-card p{margin-top:8px;font-size:14px;color:var(--c-sub)}

/* ============ FAQ ============ */
.faq-wrap{max-width:780px;margin:0 auto}
.faq-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);margin-bottom:12px;box-shadow:var(--shadow-1);overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.faq-item.is-open{border-color:rgba(29,91,224,.3);box-shadow:var(--shadow-2)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;background:none;border:0;text-align:left;font-size:16px;font-weight:600;cursor:pointer;color:var(--c-ink)}
.faq-item.is-open .faq-q{color:var(--c-primary)}
.faq-icon{flex-shrink:0;width:26px;height:26px;border-radius:50%;border:1.5px solid currentColor;display:inline-flex;align-items:center;justify-content:center;font-family:var(--font-num);font-size:15px;line-height:1;transition:transform .25s var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-item.is-open .faq-a{max-height:340px}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--c-sub)}

/* ============ 站内入口 ============ */
.entry-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.entry-card{display:flex;flex-direction:column;gap:14px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);padding:26px;box-shadow:var(--shadow-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(29,91,224,.28);color:inherit}
.entry-card .badge{align-self:flex-start;display:inline-flex;height:24px;align-items:center;padding:0 10px;border-radius:999px;background:rgba(29,91,224,.1);color:var(--c-primary);font-size:12px;font-weight:600}
.entry-card h3{font-size:17px;font-weight:600;line-height:1.45}
.entry-card p{font-size:14px;color:var(--c-sub)}
.entry-card .more{margin-top:auto;display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-primary)}
.entry-card .more svg{width:16px;height:16px;transition:transform .2s var(--ease)}
.entry-card:hover .more svg{transform:translateX(4px)}

/* ============ CTA 横幅 ============ */
.cta-band{background:var(--c-deep);border-radius:var(--r-lg);padding:48px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,440px);gap:40px;align-items:center;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;left:-100px;bottom:-140px;width:380px;height:380px;border:1.5px solid rgba(44,224,166,.12);border-radius:50%;pointer-events:none}
.cta-band h2{color:#fff;font-size:clamp(22px,3vw,30px);line-height:1.3;font-weight:700}
.cta-band p{margin-top:14px;color:var(--c-deep-sub);font-size:15px;max-width:520px}
.cta-points{margin-top:22px;display:flex;flex-wrap:wrap;gap:12px}
.cta-points span{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#C8D3E4;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:999px;padding:7px 14px}
.cta-points span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-neon)}
.form-card{position:relative;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-md);padding:26px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:#C8D3E4;margin-bottom:8px}
.field input,.field select{width:100%;height:48px;padding:0 14px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease)}
.field input::placeholder{color:#7D8AA3}
.field input:focus,.field select:focus{outline:none;border-color:var(--c-neon);background:rgba(255,255,255,.1);box-shadow:0 0 0 3px rgba(44,224,166,.16)}
.field select option{color:var(--c-ink)}
.form-tip{display:none;margin-top:14px;font-size:13px;color:var(--c-neon)}
.form-tip.is-show{display:block}
.form-note{margin-top:14px;font-size:12.5px;color:var(--c-deep-sub)}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-deep);color:var(--c-deep-sub);margin-top:96px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{color:#fff;font-size:16px}
.footer-brand p{margin-top:16px;font-size:14px;max-width:280px}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--c-deep-sub)}
.footer-col a:hover{color:#fff}
.footer-col .plain{font-size:14px;line-height:1.9}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:#7D8AA3}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .section{padding:72px 0}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .entry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:1fr;padding:40px}
}
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .nav-menu{position:fixed;top:0;right:0;bottom:0;width:290px;max-width:82vw;background:var(--c-deep);flex-direction:column;align-items:stretch;gap:6px;padding:88px 20px 32px;transform:translateX(102%);transition:transform .28s var(--ease);z-index:60;overflow-y:auto;box-shadow:-20px 0 60px -30px rgba(0,0,0,.7);margin-left:0}
  .nav-menu.is-open{transform:translateX(0)}
  .nav-link{height:48px;padding:0 16px;border-radius:10px;font-size:15px}
  .nav-link.is-active{background:rgba(44,224,166,.08)}
  .nav-link.is-active::after{left:0;top:12px;bottom:12px;right:auto;width:3px;height:auto;border-radius:0 3px 3px 0}
  .nav-inner{justify-content:space-between}
  .nav-actions{margin-left:auto}
  .btn-nav{display:none}
  .split{grid-template-columns:1fr}
  .section-sm{padding:56px 0}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .page-head{padding:40px 0 48px}
  .stat-grid,.entry-grid{grid-template-columns:1fr}
  .point-card,.side-card{padding:22px}
  .point-item{grid-template-columns:48px minmax(0,1fr);gap:14px;padding:18px 0}
  .point-num{font-size:26px}
  .point-num b{top:9px}
  .step-row{grid-template-columns:44px minmax(0,1fr);gap:14px}
  .step-dot{width:44px;height:44px;border-radius:12px;font-size:15px}
  .step-row::before{left:21px;top:44px}
  .hero-actions .btn{width:100%}
  .cta-band{padding:28px 20px;border-radius:var(--r-md)}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .topbar-note{display:none}
  .topbar-inner{justify-content:flex-end}
}
@media (max-width:520px){
  .brand{font-size:15px}
  .point-card-head{flex-direction:column;align-items:flex-start}
  .point-foot{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
  --c-deep:#0A1220;
  --c-deep-2:#111B2E;
  --c-neon:#2CE0A6;
  --c-neon-ink:#0E9B72;
  --c-primary:#1D5BE0;
  --c-primary-hover:#1648B8;
  --c-primary-soft:#EAF1FF;
  --c-convert:#FF6A2B;
  --c-convert-hover:#E4551A;
  --c-bg:#F5F7FB;
  --c-surface:#FFFFFF;
  --c-line:#E4E9F2;
  --c-ink:#0E1726;
  --c-ink-2:#55637A;
  --c-ink-3:#98A2B3;
  --c-error:#E5484D;
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Inter","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(15,23,42,.05),0 10px 28px -16px rgba(15,23,42,.18);
  --shadow-2:0 2px 6px rgba(15,23,42,.07),0 22px 42px -20px rgba(15,23,42,.28);
  --t-fn:cubic-bezier(.2,.7,.3,1);
  --t-dur:200ms;
  --sec-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t-dur) var(--t-fn)}
a:hover{color:var(--c-primary-hover)}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-ink);line-height:1.3}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25}
h2{font-size:clamp(22px,3vw,32px)}
h3{font-size:20px;font-weight:600;line-height:1.45}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec-y) 0}
.section--surface{background:var(--c-surface)}
.section--soft{background:var(--c-bg)}

/* 顶部信息条 */
.topbar{background:#070E1A;color:#94A3BA;font-size:12.5px;line-height:36px;letter-spacing:.01em}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-item{display:inline-flex;align-items:center;gap:8px}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:var(--c-neon);box-shadow:0 0 8px rgba(44,224,166,.8);flex:none}
.topbar-right{color:#7E8CA3}
@media (max-width:639px){.topbar-left span:last-child{display:none}}

/* 头部导航 */
.site-header{position:sticky;top:0;z-index:100;background:var(--c-deep)}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(44,224,166,0),rgba(44,224,166,.85),rgba(44,224,166,0));
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:70px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#E8EDF6;font-weight:700;font-size:17px;flex:none}
.brand:hover{color:#fff}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;flex:none;
  background:rgba(44,224,166,.10);border:1px solid rgba(44,224,166,.35);
}
.brand-mark svg{width:20px;height:20px}
.nav-wrap{display:flex;align-items:center;gap:18px;min-width:0}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-link{
  display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:8px;
  font-size:15px;font-weight:600;color:#C8D3E4;position:relative;
  transition:color var(--t-dur) var(--t-fn),background var(--t-dur) var(--t-fn);
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--c-neon);text-shadow:0 0 12px rgba(44,224,166,.5)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-neon);box-shadow:0 0 10px rgba(44,224,166,.75);
}
.header-cta{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:var(--r-pill);
  border:1.5px solid rgba(44,224,166,.7);color:var(--c-neon);font-size:14px;font-weight:700;
  white-space:nowrap;transition:all var(--t-dur) var(--t-fn);
}
.header-cta:hover{background:var(--c-neon);border-color:var(--c-neon);color:#06231A}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:44px;height:44px;border-radius:10px;
  border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.04);color:#E8EDF6;
}
.nav-toggle:hover{background:rgba(255,255,255,.09)}
.nav-mask{
  position:fixed;inset:0;background:rgba(10,18,32,.6);z-index:110;
  opacity:0;visibility:hidden;transition:opacity .25s var(--t-fn),visibility .25s var(--t-fn);
}
.nav-mask.is-open{opacity:1;visibility:visible}

/* 页面头图区 */
.page-hero{position:relative;background:var(--c-deep);color:#E8EDF6;overflow:hidden;padding-bottom:72px}
.page-hero::before{
  content:"";position:absolute;right:-170px;top:-180px;width:540px;height:540px;border-radius:50%;
  border:1.5px solid rgba(44,224,166,.12);pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;left:-140px;bottom:-240px;width:480px;height:480px;border-radius:50%;
  border:1.5px solid rgba(29,91,224,.18);pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding-top:22px;font-size:13px;color:#8290A6}
.crumbs a{color:#B4C1D6}
.crumbs a:hover{color:#fff}
.crumbs .sep{color:#4E5C74}
.crumbs .current{color:var(--c-neon);font-weight:600}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;padding-top:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.08em;
  color:var(--c-neon);margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--c-neon)}
.hero-copy h1{color:#FFFFFF;margin-bottom:18px}
.hero-lead{font-size:16.5px;line-height:1.85;color:#B7C4D8;max-width:560px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;color:#D8E2F0;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid rgba(255,255,255,.14);box-shadow:0 30px 60px -30px rgba(0,0,0,.75);
}
.hero-visual .badge-float{
  position:absolute;right:16px;top:16px;display:inline-flex;align-items:center;gap:7px;
  height:32px;padding:0 14px;border-radius:var(--r-pill);font-size:12.5px;font-weight:700;
  color:#06231A;background:var(--c-neon);box-shadow:0 10px 24px -12px rgba(44,224,166,.9);
}
.hero-visual .badge-float::before{content:"";width:7px;height:7px;border-radius:50%;background:#06231A}

/* 通用按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background var(--t-dur) var(--t-fn),color var(--t-dur) var(--t-fn),
             border-color var(--t-dur) var(--t-fn),transform var(--t-dur) var(--t-fn),
             box-shadow var(--t-dur) var(--t-fn);
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px -16px rgba(29,91,224,.9)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border:1.5px solid var(--c-primary);color:var(--c-primary);background:transparent}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);border-color:var(--c-primary-hover)}
.btn-convert{background:var(--c-convert);color:#fff}
.btn-convert:hover{background:var(--c-convert-hover);color:#fff;transform:translateY(-2px)}
.btn-ghost-light{border:1.5px solid rgba(255,255,255,.32);color:#E8EDF6;background:transparent}
.btn-ghost-light:hover{border-color:var(--c-neon);color:var(--c-neon);background:rgba(44,224,166,.08)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none}

/* 板块标头 */
.section-head{max-width:740px;margin-bottom:44px}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
  letter-spacing:.08em;color:var(--c-primary);margin-bottom:12px;
}
.section-head .kicker::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--c-primary)}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--c-ink-2);font-size:15.5px;line-height:1.85}

/* 流程条 */
.flow-track{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.flow-track::before{
  content:"";position:absolute;left:5%;right:5%;top:56px;height:1px;z-index:0;
  background:rgba(29,91,224,.2);
}
.flow-step{
  position:relative;z-index:1;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:22px 18px 20px;box-shadow:var(--shadow-1);
  transition:transform var(--t-dur) var(--t-fn),box-shadow var(--t-dur) var(--t-fn),border-color var(--t-dur) var(--t-fn);
}
.flow-step::before{content:"";position:absolute;left:18px;top:0;width:34px;height:3px;border-radius:0 0 3px 3px;background:var(--c-neon)}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(29,91,224,.25)}
.flow-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:26px;font-weight:700;
  color:#C7D2E4;line-height:1;margin-bottom:14px;letter-spacing:.02em;
}
.flow-step:hover .flow-num{color:var(--c-neon-ink)}
.flow-step h3{font-size:16px;margin-bottom:8px;line-height:1.5}
.flow-step p{font-size:14px;color:var(--c-ink-2);line-height:1.7}

/* 图文区块 */
.split-block{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);border:1px solid var(--c-line);box-shadow:var(--shadow-1)}
.split-copy h2{margin-bottom:18px}
.split-copy p{color:var(--c-ink-2);font-size:15.5px;line-height:1.9;margin-bottom:14px}
.check-list{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--c-ink)}
.check-list .mark{
  flex:none;width:22px;height:22px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);margin-top:3px;
}
.check-list .mark svg{width:12px;height:12px}

/* 两栏对照 */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:30px 28px;box-shadow:var(--shadow-1);
  transition:transform var(--t-dur) var(--t-fn),box-shadow var(--t-dur) var(--t-fn);
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.compare-card.is-good{border-color:rgba(29,91,224,.24);background:linear-gradient(180deg,#F3F7FF,#FFFFFF 60%)}
.compare-head{display:flex;align-items:center;gap:12px;margin-bottom:22px;padding-bottom:18px;border-bottom:1px solid var(--c-line)}
.compare-head .ic{
  width:38px;height:38px;border-radius:11px;flex:none;display:inline-flex;align-items:center;justify-content:center;
}
.compare-head .ic.warn{background:#FFF1F1;color:#D64545}
.compare-head .ic.ok{background:var(--c-primary-soft);color:var(--c-primary)}
.compare-head h3{font-size:17px}
.compare-list{display:flex;flex-direction:column;gap:16px}
.compare-list li{display:flex;gap:12px;font-size:15px;line-height:1.7;color:var(--c-ink-2)}
.compare-list li span.bullet{
  flex:none;width:8px;height:8px;border-radius:50%;margin-top:9px;
}
.compare-list .warn-bullet{background:#F0A3A3}
.compare-list .ok-bullet{background:var(--c-neon-ink)}

/* 数据条网格 */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:26px 22px;box-shadow:var(--shadow-1);position:relative;overflow:hidden;
  transition:transform var(--t-dur) var(--t-fn),box-shadow var(--t-dur) var(--t-fn),border-color var(--t-dur) var(--t-fn);
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(29,91,224,.25)}
.metric-card::after{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary);opacity:.85}
.metric-card .metric-label{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:12.5px;
  letter-spacing:.06em;font-weight:700;color:var(--c-primary);margin-bottom:12px;display:block;
}
.metric-card h3{font-size:17px;margin-bottom:10px}
.metric-card p{font-size:14px;color:var(--c-ink-2);line-height:1.75}

/* FAQ */
.faq-list{max-width:780px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color var(--t-dur) var(--t-fn),box-shadow var(--t-dur) var(--t-fn);
}
.faq-item:hover{border-color:rgba(29,91,224,.22);box-shadow:var(--shadow-1)}
.faq-item.is-open{border-color:rgba(29,91,224,.32);box-shadow:var(--shadow-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--c-ink);
  transition:color var(--t-dur) var(--t-fn);
}
.faq-q:hover{color:var(--c-primary)}
.faq-item.is-open .faq-q{color:var(--c-primary)}
.faq-icon{position:relative;width:22px;height:22px;flex:none;transition:transform var(--t-dur) var(--t-fn)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px;transition:opacity var(--t-dur) var(--t-fn)}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--t-fn)}
.faq-item.is-open .faq-a{max-height:460px}
.faq-a-inner{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}

/* 站内入口 */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.entry-card{
  display:flex;flex-direction:column;gap:10px;padding:28px 26px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);color:var(--c-ink);
  transition:transform var(--t-dur) var(--t-fn),box-shadow var(--t-dur) var(--t-fn),border-color var(--t-dur) var(--t-fn);
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(29,91,224,.28);color:var(--c-ink)}
.entry-card .entry-ic{
  width:42px;height:42px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);margin-bottom:6px;
}
.entry-card h3{font-size:17px}
.entry-card p{font-size:14px;color:var(--c-ink-2);line-height:1.75}
.entry-card .entry-more{
  margin-top:8px;display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--c-primary);
}
.entry-card:hover .entry-more{gap:10px}

/* CTA 横幅 */
.cta-band{position:relative;background:var(--c-deep);color:#E8EDF6;padding:64px 0;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;right:-120px;top:-160px;width:420px;height:420px;border-radius:50%;
  border:1.5px solid rgba(44,224,166,.14);
}
.cta-band::after{
  content:"";position:absolute;left:0;bottom:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(44,224,166,0),rgba(44,224,166,.7),rgba(44,224,166,0));
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:36px}
.cta-copy h2{color:#fff;margin-bottom:12px}
.cta-copy p{color:#9AA8BF;font-size:15.5px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex:none}

/* 页脚 */
.site-footer{background:var(--c-deep);color:#9AA8BF;font-size:14px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{font-size:16.5px;margin-bottom:16px}
.footer-brand p{line-height:1.8;max-width:280px}
.footer-col h4{color:#E8EDF6;font-size:14px;font-weight:600;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{color:#9AA8BF;font-size:14px}
.footer-col a:hover{color:#fff}
.footer-col .plain{line-height:1.9;color:#8B99B0}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0 26px;font-size:12.5px;color:#7E8CA3;
}

/* 响应式 */
@media (max-width:1199px){
  :root{--sec-y:72px}
  .hero-grid{gap:40px}
  .split-block{gap:40px}
}
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .header-cta{display:none}
  .nav-menu{
    position:fixed;top:0;right:0;bottom:0;width:288px;z-index:120;
    background:var(--c-deep);flex-direction:column;align-items:stretch;gap:6px;
    padding:84px 18px 28px;overflow-y:auto;
    transform:translateX(100%);transition:transform .3s var(--t-fn);
    box-shadow:-24px 0 48px -24px rgba(0,0,0,.7);
  }
  .nav-menu.is-open{transform:translateX(0)}
  .nav-link{height:48px;padding:0 14px;border-radius:10px;font-size:16px;justify-content:flex-start}
  .nav-link.is-active{background:rgba(44,224,166,.08);box-shadow:inset 3px 0 0 var(--c-neon);text-shadow:none}
  .nav-link.is-active::after{display:none}
  .flow-track{grid-template-columns:repeat(2,1fr)}
  .flow-track::before{display:none}
  .compare-grid{grid-template-columns:1fr}
  .split-block{grid-template-columns:1fr;gap:32px}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .entry-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  :root{--sec-y:56px}
  .container{padding:0 16px}
  .hero-grid{grid-template-columns:1fr;gap:32px;padding-top:26px}
  .page-hero{padding-bottom:52px}
  .section-head{margin-bottom:32px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
}
@media (max-width:639px){
  .flow-track{grid-template-columns:1fr}
  .metric-grid{grid-template-columns:1fr}
  .entry-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .compare-card{padding:24px 20px}
  .btn{width:100%}
  .header-inner{height:64px}
  .brand{font-size:15.5px}
}

/* roulang page: category3 */
:root{
  --c-deep:#0A1220;
  --c-deep-2:#0E1A2E;
  --c-neon:#2CE0A6;
  --c-primary:#1D5BE0;
  --c-primary-hover:#1648B8;
  --c-primary-soft:#EAF1FF;
  --c-convert:#FF6A2B;
  --c-convert-hover:#E4551A;
  --c-bg:#F5F7FB;
  --c-surface:#FFFFFF;
  --c-line:#E4E9F2;
  --c-ink:#0E1726;
  --c-ink-2:#55637A;
  --c-ink-3:#98A2B3;
  --c-error:#E5484D;
  --c-deep-ink:#E8EDF6;
  --c-deep-ink-2:#9AA8BF;
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Inter","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
  --shadow-1:0 1px 2px rgba(15,23,42,.05),0 10px 28px -16px rgba(15,23,42,.18);
  --shadow-2:0 2px 4px rgba(15,23,42,.06),0 20px 44px -20px rgba(15,23,42,.3);
  --r-xs:8px;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-primary-hover)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;letter-spacing:-.01em}
h2{font-size:clamp(22px,3vw,32px);line-height:1.3}
h3{font-size:20px;line-height:1.45;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* 顶部信息条 */
.topbar{background:#060E1A;color:var(--c-deep-ink-2);font-size:12.5px;line-height:1.5;letter-spacing:.01em}
.topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:6px;padding-bottom:6px}
.topbar-meta{display:inline-flex;align-items:center;gap:8px}
.topbar .dot{width:6px;height:6px;border-radius:50%;background:var(--c-neon);box-shadow:0 0 10px rgba(44,224,166,.7)}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,18,32,.97);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--c-neon),transparent);
  opacity:.7;
}
.header-inner{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-deep-ink);font-size:17px;font-weight:700;letter-spacing:.01em}
.brand:hover{color:#fff}
.brand-mark{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;border-radius:9px;background:rgba(44,224,166,.09);border:1px solid rgba(44,224,166,.28)}
.brand-mark svg{width:20px;height:20px}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;
  padding:9px 14px;border-radius:var(--r-xs);
  font-size:15px;font-weight:600;color:#C8D3E4;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--c-neon);text-shadow:0 0 12px rgba(44,224,166,.5)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-neon);box-shadow:0 0 10px rgba(44,224,166,.8);
}
.nav-cta{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;border-radius:999px;
  font-size:14.5px;font-weight:600;color:var(--c-neon);
  border:1.5px solid rgba(44,224,166,.5);background:rgba(44,224,166,.06);
  transition:all .2s var(--ease);
}
.nav-cta:hover{color:#04121A;background:var(--c-neon);border-color:var(--c-neon)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px;stroke:#E8EDF6}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(10,18,32,.6);z-index:80;opacity:0;pointer-events:none;transition:opacity .25s var(--ease)}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;z-index:90;
  background:var(--c-deep);border-left:1px solid rgba(255,255,255,.08);
  padding:20px;display:flex;flex-direction:column;gap:18px;
  transform:translateX(100%);transition:transform .28s var(--ease);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05);color:#E8EDF6;font-size:20px;line-height:1;cursor:pointer}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-link{position:relative;padding:13px 14px;border-radius:10px;font-size:15px;font-weight:600;color:#C8D3E4}
.drawer-link:hover{color:#fff;background:rgba(255,255,255,.06)}
.drawer-link.is-active{color:var(--c-neon);background:rgba(44,224,166,.07)}
.drawer-link.is-active::before{content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;border-radius:3px;background:var(--c-neon);box-shadow:0 0 10px rgba(44,224,166,.8)}
.drawer-cta{margin-top:auto}

/* 面包屑 */
.crumb-bar{background:#fff;border-bottom:1px solid var(--c-line)}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;line-height:1.6;color:var(--c-ink-2);padding:14px 0}
.crumb a{color:var(--c-ink-2)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:var(--c-ink-3)}
.crumb .current{color:var(--c-primary);font-weight:600}

/* 通用板块 */
.section{padding:72px 0}
.section-tight{padding-top:56px}
.section-head{max-width:760px;margin-bottom:36px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.08em;
  color:var(--c-primary);text-transform:none;margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--c-neon)}
.section-sub{margin-top:12px;color:var(--c-ink-2);font-size:15.5px;max-width:640px}

/* 页头 */
.page-hero{position:relative;background:#fff;border-bottom:1px solid var(--c-line);overflow:hidden}
.page-hero::before{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  border:1.5px solid rgba(29,91,224,.12);pointer-events:none;
}
.page-hero-inner{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:center;padding:64px 0 56px;position:relative}
.page-hero-copy h1{margin-bottom:16px}
.lede{font-size:17px;color:var(--c-ink-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary);font-size:12.5px;font-weight:600}
.page-hero-media{position:relative}
.page-hero-media img{width:100%;aspect-ratio:16/10;border-radius:var(--r-lg);border:1px solid var(--c-line);box-shadow:var(--shadow-1)}
.hero-badge{
  position:absolute;top:16px;right:16px;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;
  background:rgba(10,18,32,.86);color:var(--c-neon);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  border:1px solid rgba(44,224,166,.4);
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-neon);box-shadow:0 0 10px rgba(44,224,166,.8)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;cursor:pointer;border:1.5px solid transparent;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn:active{transform:translateY(0)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px -14px rgba(29,91,224,.75)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);transform:translateY(-2px)}
.btn-convert{background:var(--c-convert);color:#fff}
.btn-convert:hover{background:var(--c-convert-hover);color:#fff;transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

/* 时间线 */
.timeline-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.timeline{position:relative;padding-left:44px}
.timeline::before{
  content:"";position:absolute;left:11px;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-primary) 0%,rgba(29,91,224,.28) 55%,rgba(29,91,224,.06) 100%);
}
.tl-item{position:relative;padding-bottom:20px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-39px;top:26px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--c-primary);
  box-shadow:0 0 0 4px rgba(29,91,224,.1);
}
.tl-item:first-child::before{border-color:var(--c-neon);box-shadow:0 0 0 4px rgba(44,224,166,.16)}
.tl-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(29,91,224,.4)}
.tl-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.tl-step{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--c-primary);background:var(--c-primary-soft);border-radius:999px;padding:4px 10px}
.tl-title{font-size:17px;font-weight:600;margin:0}
.tl-text{color:var(--c-ink-2);font-size:14.5px;margin-top:6px}
.tl-note{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:12.5px;color:var(--c-ink-3)}
.tl-note svg{width:14px;height:14px;stroke:var(--c-neon)}

/* 侧栏提示卡 */
.side-stack{display:flex;flex-direction:column;gap:16px;position:sticky;top:96px}
.side-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);padding:22px;box-shadow:var(--shadow-1)}
.side-card h3{font-size:16px;margin-bottom:12px}
.side-card p{font-size:14px;color:var(--c-ink-2)}
.side-list{display:flex;flex-direction:column;gap:10px;margin-top:4px}
.side-list li{display:flex;gap:10px;font-size:14px;color:var(--c-ink-2);line-height:1.6}
.side-list li svg{flex:0 0 auto;width:16px;height:16px;margin-top:4px;stroke:var(--c-primary)}
.side-card.dark{background:var(--c-deep);border-color:rgba(255,255,255,.08)}
.side-card.dark h3{color:var(--c-deep-ink)}
.side-card.dark p{color:var(--c-deep-ink-2)}

/* 深色数据条区 */
.deep-band{background:var(--c-deep);color:var(--c-deep-ink);position:relative;overflow:hidden}
.deep-band::before{
  content:"";position:absolute;left:-160px;bottom:-200px;width:460px;height:460px;border-radius:50%;
  border:1.5px solid rgba(44,224,166,.12);pointer-events:none;
}
.deep-band .eyebrow{color:var(--c-neon)}
.deep-band h2{color:#fff}
.deep-band .section-sub{color:var(--c-deep-ink-2)}
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;position:relative}
.stat-card{
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--r-md);padding:24px 22px;
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.stat-card:hover{transform:translateY(-4px);border-color:rgba(44,224,166,.4);background:rgba(255,255,255,.07)}
.stat-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:32px;font-weight:700;color:var(--c-neon);line-height:1.1;letter-spacing:.02em}
.stat-title{margin-top:12px;font-size:16px;font-weight:600;color:#fff}
.stat-text{margin-top:8px;font-size:13.5px;color:var(--c-deep-ink-2);line-height:1.65}

/* FAQ */
.faq-wrap{max-width:780px;margin:0 auto}
.faq{display:flex;flex-direction:column;gap:12px;margin-top:32px}
.faq-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--shadow-1);transition:border-color .2s var(--ease)}
.faq-item.is-open{border-color:rgba(29,91,224,.35)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.5;
}
.faq-q:hover{color:var(--c-primary)}
.faq-item.is-open .faq-q{color:var(--c-primary)}
.faq-icon{flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--c-line);display:inline-flex;align-items:center;justify-content:center;transition:transform .25s var(--ease),background .2s var(--ease),border-color .2s var(--ease)}
.faq-icon svg{width:13px;height:13px;stroke:var(--c-primary)}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--c-primary-soft);border-color:rgba(29,91,224,.35)}
.faq-a{display:none;padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}
.faq-item.is-open .faq-a{display:block}

/* 站内入口 */
.entry-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.entry-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(29,91,224,.4)}
.entry-card img{width:100%;aspect-ratio:16/9;border-bottom:1px solid var(--c-line)}
.entry-body{padding:18px 20px 20px}
.entry-body h3{font-size:17px;margin-bottom:8px;color:var(--c-ink)}
.entry-card:hover h3{color:var(--c-primary)}
.entry-body p{font-size:14px;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.entry-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;font-size:12.5px;color:var(--c-ink-3)}
.entry-foot svg{width:16px;height:16px;stroke:var(--c-primary);transition:transform .2s var(--ease)}
.entry-card:hover .entry-foot svg{transform:translateX(4px)}

/* CTA 横幅 */
.cta-band{background:var(--c-deep);color:var(--c-deep-ink);border-radius:var(--r-lg);padding:44px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:44px;align-items:center;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;border:1.5px solid rgba(44,224,166,.14);pointer-events:none}
.cta-band h2{color:#fff;margin-bottom:14px}
.cta-band p{color:var(--c-deep-ink-2);font-size:15px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cta-points span{display:inline-flex;align-items:center;padding:6px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.16);font-size:12.5px;color:#C8D3E4}
.cta-form{position:relative;z-index:1;display:flex;flex-direction:column;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:14px;color:#C8D3E4}
.field input,.field select{
  height:48px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);
  color:#E8EDF6;padding:0 14px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field input::placeholder{color:rgba(232,237,246,.42)}
.field input:focus,.field select:focus{outline:none;border-color:var(--c-neon);box-shadow:0 0 0 3px rgba(44,224,166,.18);background:rgba(255,255,255,.09)}
.field select option{color:var(--c-ink)}
.form-hint{font-size:12.5px;color:var(--c-deep-ink-2)}
.form-state{font-size:12.5px;color:var(--c-neon);min-height:18px}

/* 页脚 */
.site-footer{background:var(--c-deep);color:var(--c-deep-ink-2);margin-top:72px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.7;color:var(--c-deep-ink-2);max-width:280px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--c-deep-ink-2)}
.footer-col a:hover{color:#fff}
.footer-col .plain{font-size:14px;line-height:1.9;color:var(--c-deep-ink-2)}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--c-deep-ink-2);
}

/* 占位/空态 */
.skeleton{background:linear-gradient(90deg,#EEF2F8 25%,#E4E9F2 37%,#EEF2F8 63%);background-size:400% 100%;animation:sk 1.4s ease infinite;border-radius:8px}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}

@media (max-width:1199px){
  .section{padding:72px 0}
}
@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-cta.desktop-only{display:none}
  .nav-toggle{display:inline-flex}
  .page-hero-inner{grid-template-columns:1fr;gap:32px;padding:48px 0 44px}
  .timeline-wrap{grid-template-columns:1fr;gap:32px}
  .side-stack{position:static}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .entry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:1fr;padding:36px;gap:28px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .container{padding:0 16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .timeline{padding-left:32px}
  .timeline::before{left:7px}
  .tl-item::before{left:-31px;top:24px;width:12px;height:12px}
  .stat-grid{grid-template-columns:1fr}
  .entry-grid{grid-template-columns:1fr}
  .cta-band{padding:28px;border-radius:var(--r-md)}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .header-inner{min-height:62px;gap:12px}
  .brand{font-size:15px}
  .brand-mark{width:26px;height:26px}
  .page-hero-inner{padding:36px 0 32px}
  .lede{font-size:15.5px}
  .tl-card{padding:18px}
  .faq-q{padding:16px 18px;font-size:15.5px}
  .faq-a{padding:0 18px 18px}
  .topbar-inner{justify-content:flex-start}
}