/* roulang page: index */
:root{
  --ink-900:#100C1F;
  --ink-700:#1C1633;
  --paper:#F7F6FC;
  --paper-2:#FFFFFF;
  --line:#E8E5F3;
  --brand-600:#6A4CF0;
  --brand-500:#7E63F5;
  --brand-050:#F0EDFE;
  --accent-teal:#17C3B2;
  --accent-amber:#FFB347;
  --grad-brand:linear-gradient(115deg,#6A4CF0 0%,#8B5CF6 42%,#17C3B2 100%);
  --text-strong:#171232;
  --text:#3B3757;
  --text-muted:#6E6A8A;
  --shadow-card:0 2px 4px rgba(23,18,50,.04),0 24px 48px -32px rgba(106,76,240,.35);
  --shadow-card-hover:0 2px 4px rgba(23,18,50,.05),0 28px 52px -30px rgba(106,76,240,.45);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--paper);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  padding-bottom:68px;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
strong{font-weight:600}
:focus-visible{outline:2px solid rgba(106,76,240,.55);outline-offset:2px;border-radius:8px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,252,0);
  border-bottom:1px solid rgba(23,18,50,.08);
  transition:background .3s ease,backdrop-filter .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom-color:rgba(23,18,50,.14);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;border-radius:12px;background:var(--grad-brand);
  color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700;
  letter-spacing:.04em;flex-shrink:0;
}
.brand-name{display:block;font-size:16px;font-weight:600;color:var(--text-strong);line-height:1.3;letter-spacing:-.01em;white-space:nowrap}
.brand-sub{display:block;font-size:12px;color:var(--text-muted);line-height:1.45;letter-spacing:.02em;white-space:nowrap}
.nav-links{display:none;align-items:center;gap:30px}
@media (min-width:1024px){.nav-links{display:flex}}
.nav-link{position:relative;font-size:15px;color:var(--text);padding:6px 0;white-space:nowrap;transition:color .25s ease}
.nav-link::after{
  content:"";position:absolute;left:-4px;right:-4px;bottom:-2px;height:2px;border-radius:2px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:center;
  transition:transform .28s cubic-bezier(.2,.7,.3,1);
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text-strong);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-cta{display:none}
@media (min-width:1024px){.nav-cta{display:inline-flex}}
.menu-toggle{
  width:44px;height:44px;display:grid;place-items:center;border-radius:12px;
  border:1px solid var(--line);background:var(--paper-2);transition:background .25s ease,border-color .25s ease;
}
.menu-toggle:hover{background:var(--brand-050);border-color:rgba(106,76,240,.35)}
@media (min-width:1024px){.menu-toggle{display:none}}

.mobile-panel{
  position:fixed;inset:0 0 0 auto;width:min(82vw,380px);background:var(--paper-2);
  z-index:80;transform:translateX(100%);transition:transform .34s cubic-bezier(.2,.7,.3,1);
  padding:26px 24px 32px;display:flex;flex-direction:column;box-shadow:-24px 0 60px -30px rgba(16,12,31,.5);
}
.mobile-panel.is-open{transform:translateX(0)}
.mobile-mask{position:fixed;inset:0;background:rgba(16,12,31,.42);z-index:70;opacity:0;pointer-events:none;transition:opacity .3s ease}
.mobile-mask.is-open{opacity:1;pointer-events:auto}
.mobile-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.mobile-close{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;border:1px solid var(--line)}
.mobile-nav{display:flex;flex-direction:column;gap:20px;flex:1}
.mobile-nav a{font-size:20px;color:var(--text-strong);display:flex;align-items:center;gap:10px}
.mobile-nav a .dot{width:6px;height:6px;border-radius:50%;background:var(--accent-teal);opacity:0}
.mobile-nav a.is-active{color:var(--brand-600);font-weight:600}
.mobile-nav a.is-active .dot{opacity:1}
.mobile-foot{padding-top:22px;border-top:1px solid var(--line)}

/* ---------- 按钮 / 链接 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;font-size:15px;font-weight:600;
  letter-spacing:.01em;white-space:nowrap;cursor:pointer;
  transition:transform .35s cubic-bezier(.2,.7,.3,1),box-shadow .35s cubic-bezier(.2,.7,.3,1),background-position .35s ease,background-color .25s ease,border-color .25s ease;
}
.btn-primary{
  background-image:var(--grad-brand);background-size:160% 100%;background-position:0% 50%;
  color:#fff;box-shadow:0 10px 24px -14px rgba(106,76,240,.6);
}
.btn-primary:hover{background-position:100% 50%;transform:translateY(-1px);box-shadow:0 14px 28px -12px rgba(106,76,240,.5)}
.btn-primary:active{transform:translateY(0) scale(.985)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text-strong)}
.btn-ghost:hover{background:var(--brand-050);border-color:rgba(106,76,240,.4)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--brand-600);position:relative;transition:color .25s ease;
}
.link-arrow svg{transition:transform .25s ease;flex-shrink:0}
.link-arrow:hover{color:var(--accent-teal)}
.link-arrow:hover svg{transform:translateX(3px)}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-050);color:var(--brand-600);font-size:13px;font-weight:600;letter-spacing:.02em;
}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0}
@media (min-width:1024px){.section{padding:104px 0}}
.section-head{max-width:720px;margin-bottom:36px}
@media (min-width:1024px){.section-head{margin-bottom:52px}}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  letter-spacing:.06em;color:var(--brand-600);margin-bottom:14px;
}
.section-eyebrow::before{content:"";width:20px;height:1px;background:var(--grad-brand)}
.section-head h2{font-size:28px;font-weight:600;line-height:1.3;color:var(--text-strong);letter-spacing:-.015em}
@media (min-width:1024px){.section-head h2{font-size:34px}}
.section-head p{margin-top:14px;font-size:16px;color:var(--text-muted);line-height:1.85}
.section-head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:44px 0 60px}
.hero::before{
  content:"";position:absolute;top:-160px;right:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(106,76,240,.14) 0%,rgba(23,195,178,.06) 45%,transparent 70%);
  pointer-events:none;
}
@media (min-width:1024px){.hero{padding:80px 0 100px}}
.hero-grid{position:relative;display:grid;gap:44px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:6.4fr 5.6fr;gap:56px}}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 16px;border-radius:999px;
  background:var(--paper-2);border:1px solid var(--line);font-size:13px;font-weight:600;
  color:var(--brand-600);letter-spacing:.02em;margin-bottom:22px;
}
.hero-eyebrow .pulse{width:7px;height:7px;border-radius:50%;background:var(--accent-teal);box-shadow:0 0 0 4px rgba(23,195,178,.18)}
.hero h1{
  font-size:clamp(30px,5.4vw,54px);font-weight:600;line-height:1.18;letter-spacing:-.02em;
  color:var(--text-strong);word-break:keep-all;
}
.hero-sub{margin-top:20px;font-size:16px;line-height:1.85;color:var(--text-muted);max-width:560px}
@media (min-width:1024px){.hero-sub{font-size:17px}}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:30px}
.hero-trust{display:flex;flex-wrap:wrap;gap:28px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line)}
.hero-trust li{display:flex;flex-direction:column;gap:2px}
.hero-trust .num{font-size:24px;font-weight:700;color:var(--accent-amber);line-height:1.2}
.hero-trust span{font-size:13px;color:var(--text-muted);letter-spacing:.02em}

.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:320px;aspect-ratio:16/11;box-shadow:var(--shadow-card)}
.hero-visual > img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,12,31,.12) 0%,rgba(16,12,31,.55) 55%,rgba(16,12,31,.88) 100%);
}
.hero-card{
  position:absolute;left:18px;right:18px;bottom:18px;z-index:3;
  background:rgba(255,255,255,.96);border-radius:var(--r-lg);padding:18px 20px;
  border:1px solid rgba(255,255,255,.7);
  box-shadow:0 24px 48px -30px rgba(16,12,31,.85);
}
.hero-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.badge-pill{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  background:var(--brand-050);border:1px solid rgba(106,76,240,.2);font-size:12px;font-weight:600;
  color:var(--brand-600);letter-spacing:.02em;
}
.hero-card-line{display:flex;align-items:center;gap:12px;margin-top:10px}
.hero-card-line .bar{flex:1;height:8px;border-radius:999px;background:linear-gradient(90deg,rgba(106,76,240,.25),rgba(23,195,178,.18));overflow:hidden}
.hero-card-line .bar i{display:block;height:100%;border-radius:999px;background:var(--grad-brand)}
.hero-card-line .val{font-size:13px;color:var(--text-muted)}
.hero-float{
  position:absolute;z-index:4;border-radius:14px;padding:10px 14px;font-size:12px;font-weight:600;
  background:rgba(255,255,255,.94);border:1px solid rgba(255,255,255,.7);color:var(--text-strong);
  box-shadow:0 16px 32px -22px rgba(16,12,31,.8);letter-spacing:.01em;
}
.hero-float.f1{top:18px;left:18px}
.hero-float.f2{top:70px;right:18px}
.hero-float .dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent-teal);margin-right:6px;vertical-align:middle}

/* ---------- 卖点区（非对称） ---------- */
.adv-grid{display:grid;gap:24px}
@media (min-width:1024px){.adv-grid{grid-template-columns:7fr 5fr;gap:28px}}
.adv-col{display:grid;gap:24px}
@media (min-width:1024px){.adv-col{gap:28px}}
.adv-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;display:flex;flex-direction:column;transition:transform .35s cubic-bezier(.2,.7,.3,1),box-shadow .35s ease,border-color .35s ease;
}
.adv-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:rgba(106,76,240,.3)}
.adv-card-lg{padding:0;overflow:hidden}
.adv-card-lg .adv-body{padding:26px 26px 28px}
@media (min-width:1024px){.adv-card-lg .adv-body{padding:30px 32px 34px}}
.adv-cover{position:relative;aspect-ratio:16/8;overflow:hidden;background:var(--brand-050)}
.adv-cover img{width:100%;height:100%;object-fit:cover}
.adv-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,12,31,.05),rgba(16,12,31,.35))}
.icon-soft{
  width:44px;height:44px;border-radius:14px;background:var(--brand-050);display:grid;place-items:center;
  color:var(--brand-600);margin-bottom:16px;flex-shrink:0;
}
.adv-card h3{font-size:19px;font-weight:600;color:var(--text-strong);line-height:1.45}
.adv-card p{margin-top:10px;font-size:15px;color:var(--text-muted);line-height:1.8}
.adv-foot{margin-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.mini-pill{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  border:1px solid var(--line);font-size:12px;color:var(--text-muted);letter-spacing:.02em;
}

/* ---------- 场景演示 ---------- */
.demo-wrap{display:grid;gap:28px}
@media (min-width:1024px){.demo-wrap{grid-template-columns:5fr 7fr;gap:40px;align-items:start}}
.step-list{display:flex;flex-direction:column;gap:14px;position:relative}
.step-tab{
  display:flex;gap:16px;text-align:left;padding:16px 18px;border-radius:var(--r-md);
  border:1px solid transparent;background:transparent;transition:background .3s ease,border-color .3s ease,transform .3s ease;
  width:100%;
}
.step-tab:hover{background:var(--paper-2);border-color:var(--line)}
.step-tab.is-active{background:var(--paper-2);border-color:var(--line);box-shadow:var(--shadow-card)}
.step-idx{
  width:36px;height:36px;border-radius:999px;display:grid;place-items:center;flex-shrink:0;
  font-size:14px;font-weight:700;background:var(--brand-050);color:var(--brand-600);
  border:1px solid rgba(106,76,240,.18);transition:background .3s ease,color .3s ease;
}
.step-tab.is-active .step-idx{background-image:var(--grad-brand);color:#fff;border-color:transparent}
.step-tab h3{font-size:17px;font-weight:600;color:var(--text-strong);line-height:1.5}
.step-tab p{margin-top:6px;font-size:14px;color:var(--text-muted);line-height:1.75}
.step-tab .mini-pill{margin-top:10px}
.demo-panel{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--paper-2);box-shadow:var(--shadow-card)}
.demo-stage{position:relative;aspect-ratio:16/10;background:linear-gradient(135deg,#141029 0%,#241B45 55%,#123037 100%);overflow:hidden}
.demo-stage::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:44px 44px;opacity:.7;
}
.demo-stage img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.step-panel{display:none;position:absolute;inset:0;z-index:3;padding:26px;flex-direction:column;justify-content:flex-end}
.step-panel.is-active{display:flex}
.step-panel h3{color:#fff;font-size:20px;font-weight:600;line-height:1.5}
.step-panel p{margin-top:10px;color:rgba(255,255,255,.72);font-size:14px;line-height:1.8;max-width:520px}
.step-panel .data-chip{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);color:#fff;
  font-size:12px;font-weight:600;letter-spacing:.02em;align-self:flex-start;margin-bottom:16px;
}
.step-panel .data-chip b{color:var(--accent-amber);font-size:14px}

/* ---------- 最新信息（CMS） ---------- */
.news-grid{display:grid;gap:24px}
@media (min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);gap:28px}}
.news-card{
  display:flex;flex-direction:column;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;height:100%;
  transition:transform .35s cubic-bezier(.2,.7,.3,1),box-shadow .35s ease,border-color .35s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:rgba(106,76,240,.32)}
.news-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-050)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .news-cover img{transform:scale(1.05)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-title{margin-top:12px;font-size:18px;font-weight:600;color:var(--text-strong);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .25s ease}
.news-card:hover .news-title{color:var(--brand-600)}
.news-desc{margin-top:10px;font-size:14.5px;color:var(--text-muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);font-size:13px;color:var(--text-muted)}
.news-empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:220px;border:1px dashed rgba(106,76,240,.35);border-radius:var(--r-md);
  background:var(--paper-2);text-align:center;padding:28px;
}
.news-empty p{font-size:15px;color:var(--text-muted)}

/* ---------- 社会认同 ---------- */
.proof{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.proof-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media (min-width:768px){.proof-stats{grid-template-columns:repeat(4,1fr);gap:24px}}
.proof-stat{padding:22px 20px;border-radius:var(--r-md);border:1px solid var(--line);background:var(--paper)}
.proof-stat .num{font-size:30px;font-weight:700;line-height:1.15;background-image:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.proof-stat span{display:block;margin-top:6px;font-size:13px;color:var(--text-muted);letter-spacing:.02em}
.proof-scroll{display:flex;gap:18px;margin-top:34px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none}
.proof-scroll::-webkit-scrollbar{display:none}
.proof-card{
  flex:0 0 292px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;display:flex;flex-direction:column;gap:12px;
}
@media (min-width:768px){.proof-card{flex:1 1 0;min-width:0}}
.proof-card h3{font-size:16px;font-weight:600;color:var(--text-strong)}
.proof-card p{font-size:14px;color:var(--text-muted);line-height:1.75}
.proof-card .mini-pill{align-self:flex-start}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-md);background:var(--paper-2);overflow:hidden;transition:border-color .3s ease,box-shadow .3s ease}
.faq-item.is-open{border-color:rgba(106,76,240,.35);box-shadow:var(--shadow-card)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;text-align:left;font-size:17px;font-weight:600;color:var(--text-strong);line-height:1.6;
}
.faq-icon{
  width:28px;height:28px;border-radius:999px;border:1px solid var(--line);display:grid;place-items:center;
  flex-shrink:0;color:var(--brand-600);transition:transform .3s ease,background .3s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--brand-050);border-color:rgba(106,76,240,.3)}
.faq-a{max-height:0;opacity:0;overflow:hidden;transition:max-height .3s ease,opacity .25s ease}
.faq-item.is-open .faq-a{max-height:420px;opacity:1}
.faq-a p{padding:0 22px 22px;font-size:15px;color:var(--text-muted);line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);padding:40px 26px;
  background:linear-gradient(115deg,#14102B 0%,#231A45 52%,#103640 100%);
  border:1px solid rgba(255,255,255,.08);
}
@media (min-width:1024px){.cta-band{padding:56px 52px}}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(106,76,240,.45),transparent 68%);
}
.cta-inner{position:relative;z-index:2;display:grid;gap:26px;align-items:center}
@media (min-width:1024px){.cta-inner{grid-template-columns:7fr 5fr}}
.cta-band h2{font-size:26px;font-weight:600;color:#fff;line-height:1.4}
@media (min-width:1024px){.cta-band h2{font-size:32px}}
.cta-band p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.7);line-height:1.85;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
@media (min-width:1024px){.cta-actions{justify-content:flex-end}}
.btn-outline-light{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.14);transform:translateY(-1px)}
.cta-band .link-arrow{color:rgba(255,255,255,.85)}
.cta-band .link-arrow:hover{color:var(--accent-teal)}

/* ---------- 底部固定转化条 ---------- */
.dock{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(16,12,31,.92);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border-top:1px solid rgba(255,255,255,.08);
  transform:translateY(14px);opacity:0;pointer-events:none;
  transition:opacity .25s ease,transform .25s ease;
}
.dock::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-brand)}
.dock.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.dock-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:68px}
.dock-text{font-size:14px;color:rgba(255,255,255,.75);line-height:1.5}
.dock-text b{color:#fff;font-weight:600}
.dock-actions{display:flex;align-items:center;gap:18px}
.dock-actions .link-arrow{color:rgba(255,255,255,.75)}
.dock-actions .link-arrow:hover{color:var(--accent-teal)}
.dock-close{
  width:24px;height:24px;border-radius:50%;border:1px solid rgba(255,255,255,.22);color:rgba(255,255,255,.7);
  display:grid;place-items:center;flex-shrink:0;transition:background .25s ease,color .25s ease;
}
.dock-close:hover{background:rgba(255,255,255,.12);color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--ink-900);color:rgba(255,255,255,.6);padding:60px 0 26px;margin-top:0}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-brand)}
.footer-grid{display:grid;gap:34px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:5fr 3fr 3fr 4fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{background-image:var(--grad-brand)}
.footer-brand strong{color:#fff;font-size:16px;font-weight:600;letter-spacing:-.01em}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;letter-spacing:.04em;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{position:relative;font-size:14px;color:rgba(255,255,255,.6);transition:color .25s ease,padding-left .25s ease}
.footer-col a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:6px;height:6px;border-radius:50%;
  background:var(--accent-teal);opacity:0;transition:opacity .25s ease;
}
.footer-col a:hover{color:#fff;padding-left:14px}
.footer-col a:hover::before{opacity:1}
.footer-form{display:flex;flex-direction:column;gap:10px;margin-top:16px}
.footer-form label{font-size:13px;color:rgba(255,255,255,.6)}
.footer-input{
  height:46px;border-radius:var(--r-sm);background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  color:#fff;padding:0 14px;font-size:14px;outline:none;transition:border-color .25s ease,box-shadow .25s ease;
}
.footer-input::placeholder{color:rgba(255,255,255,.4)}
.footer-input:focus{border-color:rgba(106,76,240,.7);box-shadow:0 0 0 3px rgba(106,76,240,.18)}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.45);
}

@media (max-width:639px){
  body{padding-bottom:60px}
  .dock-inner{height:60px;gap:12px}
  .dock-text{font-size:13px}
  .dock-actions .link-arrow{display:none}
  .section{padding:56px 0}
}

/* roulang page: article */
:root{
  --ink-900:#100C1F;
  --ink-700:#1C1633;
  --paper:#F7F6FC;
  --paper-2:#FFFFFF;
  --line:#E8E5F3;
  --brand-600:#6A4CF0;
  --brand-500:#7E63F5;
  --brand-050:#F0EDFE;
  --accent-teal:#17C3B2;
  --accent-amber:#FFB347;
  --grad-brand:linear-gradient(115deg,#6A4CF0 0%,#8B5CF6 42%,#17C3B2 100%);
  --text-strong:#171232;
  --text:#3B3757;
  --text-muted:#6E6A8A;
  --shadow-card:0 2px 4px rgba(23,18,50,.04), 0 24px 48px -32px rgba(106,76,240,.35);
  --shadow-card-hover:0 2px 4px rgba(23,18,50,.05), 0 28px 52px -30px rgba(106,76,240,.45);
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:14px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input,button,textarea{font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text-strong);font-weight:600;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0}
::selection{background:rgba(106,76,240,.18)}
:focus-visible{outline:2px solid rgba(106,76,240,.55);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}
@media (min-width:1280px){.container{max-width:1240px}}
.tnum{font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  min-height:44px;padding:0 24px;
  transition:all .35s var(--ease);
  background:transparent;
}
.btn-primary{
  background-image:var(--grad-brand);
  background-size:160% 100%;
  background-position:0% 50%;
  color:#fff;
  box-shadow:0 10px 24px -16px rgba(106,76,240,.7);
}
.btn-primary:hover{
  background-position:100% 50%;
  transform:translateY(-1px);
  box-shadow:0 14px 28px -12px rgba(106,76,240,.5);
}
.btn-primary:active{transform:translateY(0) scale(.985)}
.btn-ghost{
  border-color:var(--line);
  color:var(--text-strong);
  background:transparent;
}
.btn-ghost:hover{background:var(--brand-050);border-color:rgba(106,76,240,.4)}
.btn-sm{min-height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
@media (min-width:1024px){.btn{min-height:48px;padding:0 28px}}

.text-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-600);font-weight:600;font-size:14px;
  transition:color .25s var(--ease);
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;
  background:var(--accent-teal);transition:width .25s var(--ease);
}
.text-link:hover{color:var(--accent-teal)}
.text-link:hover::after{width:100%}
.text-link .arrow{transition:transform .25s var(--ease);display:inline-block}
.text-link:hover .arrow{transform:translateX(2px)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,252,.86);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(23,18,50,.08);
  transition:background .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.9);
  border-bottom-color:rgba(23,18,50,.13);
}
.header-inner{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;flex:0 0 40px;
  border-radius:14px;background:var(--grad-brand);
  color:#fff;font-size:15px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 10px 20px -12px rgba(106,76,240,.7);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{font-size:16px;color:var(--text-strong);letter-spacing:-.01em;white-space:nowrap}
.brand-text small{font-size:12px;color:var(--text-muted);line-height:1.4;white-space:nowrap}
.nav-links{display:none;align-items:center;gap:28px}
.nav-link{
  position:relative;font-size:15px;color:var(--text);font-weight:500;
  padding:6px 0;transition:color .25s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:-4px;right:-4px;bottom:-2px;height:2px;border-radius:2px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:left;
  transition:transform .28s var(--ease);
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-600)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.header-actions .btn-primary{display:none}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--line);border-radius:14px;
  background:var(--paper-2);color:var(--text-strong);
}
.menu-toggle:hover{background:var(--brand-050);border-color:rgba(106,76,240,.35)}
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:var(--paper-2);
  padding:16px 20px 24px;
}
.mobile-panel.is-open{display:block}
.mobile-panel a{
  display:flex;align-items:center;gap:8px;
  font-size:20px;font-weight:500;color:var(--text);
  padding:20px 0;border-bottom:1px solid var(--line);
}
.mobile-panel a::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--line);
  transition:background .2s var(--ease);
}
.mobile-panel a.is-active{color:var(--brand-600)}
.mobile-panel a.is-active::before{background:var(--brand-600)}
.mobile-panel .panel-cta{margin-top:20px}
@media (min-width:1024px){
  .nav-links{display:flex}
  .header-actions .btn-primary{display:inline-flex}
  .menu-toggle{display:none}
  .mobile-panel{display:none !important}
}

/* ---------- 文章页头部 ---------- */
.article-head{padding:32px 0 0}
.breadcrumb-wrap{overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.breadcrumb-wrap::-webkit-scrollbar{display:none}
.breadcrumb{
  display:flex;align-items:center;gap:8px;white-space:nowrap;
  font-size:13px;color:var(--text-muted);
}
.breadcrumb a{color:var(--text-muted);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:rgba(110,106,138,.5)}
.breadcrumb .current{color:rgba(110,106,138,.6);max-width:340px;overflow:hidden;text-overflow:ellipsis}
.article-title-block{margin-top:24px;max-width:840px}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;color:var(--brand-600);
  background:var(--brand-050);border:1px solid rgba(106,76,240,.16);
  border-radius:999px;padding:5px 14px;
}
.article-title-block h1{
  margin-top:16px;
  font-size:30px;font-weight:600;line-height:1.22;letter-spacing:-.02em;
  overflow-wrap:break-word;word-break:break-word;
}
@media (min-width:768px){.article-title-block h1{font-size:36px}}
@media (min-width:1024px){.article-title-block h1{font-size:40px}}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:18px;font-size:13.5px;color:var(--text-muted);
}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(110,106,138,.4)}
.cover-figure{margin:32px 0 0;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card)}
.cover-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.cover-caption{font-size:13px;color:var(--text-muted);margin-top:10px}

/* ---------- 正文布局 ---------- */
.article-main{padding:40px 0 0}
.article-layout{display:block}
.article-col{max-width:800px;margin:0 auto}
.article-body{
  font-size:17px;line-height:1.9;color:var(--text);
  overflow-wrap:break-word;word-break:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.35em}
.article-body a{color:var(--brand-600);border-bottom:1px solid rgba(106,76,240,.3);transition:color .2s var(--ease),border-color .2s var(--ease)}
.article-body a:hover{color:var(--accent-teal);border-bottom-color:rgba(23,195,178,.5)}
.article-body h2{
  font-size:24px;margin:40px 0 16px;letter-spacing:-.01em;
  scroll-margin-top:96px;padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;
  background:var(--grad-brand);
}
.article-body h3{font-size:20px;margin:28px 0 12px;scroll-margin-top:96px}
.article-body h4{font-size:17px;margin:22px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.35em;padding-left:1.4em}
.article-body li{margin:6px 0}
.article-body ul li::marker{color:var(--brand-600)}
.article-body ol li::marker{color:var(--brand-600);font-weight:600}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;
  background:var(--brand-050);
  border-left:3px solid var(--brand-600);
  border-radius:12px;color:var(--text-strong);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:16px;margin:24px 0 8px;width:100%;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-muted);text-align:center;margin-top:8px}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  display:block;overflow-x:auto;
}
.article-body thead th{
  background:var(--brand-050);color:var(--text-strong);
  font-weight:600;text-align:left;padding:12px 14px;
  border-bottom:1px solid var(--line);white-space:nowrap;
}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.article-body tbody tr:hover{background:rgba(240,237,254,.5)}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.9em;background:var(--brand-050);color:#4B34C7;
  padding:2px 7px;border-radius:6px;
}
.article-body pre{
  background:var(--ink-900);color:#EDEAFB;padding:18px 20px;border-radius:14px;
  overflow-x:auto;font-size:14.5px;line-height:1.75;margin:24px 0;
}
.article-body pre code{background:none;color:inherit;padding:0;font-size:inherit}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* ---------- 侧栏 ---------- */
.article-aside{display:none}
.aside-card{
  border:1px solid var(--line);background:var(--paper-2);
  border-radius:var(--radius-md);padding:20px 22px;
  box-shadow:0 2px 4px rgba(23,18,50,.03);
}
.aside-card + .aside-card{margin-top:16px}
.aside-card h3{font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--text-muted);text-transform:uppercase;margin-bottom:12px}
.toc-list{list-style:none;padding:0;margin:0;border-left:1px solid var(--line)}
.toc-list li{margin:0}
.toc-list a{
  display:block;font-size:14px;color:var(--text);padding:7px 0 7px 14px;
  border-left:2px solid transparent;margin-left:-1px;line-height:1.55;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.toc-list a:hover,.toc-list a.is-current{color:var(--brand-600);border-left-color:var(--brand-600)}
.aside-links{list-style:none;padding:0;margin:0}
.aside-links li + li{margin-top:10px}
.aside-links a{font-size:14.5px;color:var(--text);display:inline-flex;gap:6px;align-items:center;transition:color .2s var(--ease),transform .2s var(--ease)}
.aside-links a:hover{color:var(--brand-600);transform:translateX(2px)}
@media (min-width:1280px){
  .article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:48px;align-items:start}
  .article-col{margin:0}
  .article-aside{display:block;position:sticky;top:100px}
}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed var(--line);background:var(--paper-2);
  border-radius:var(--radius-lg);padding:56px 28px;text-align:center;
}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--text-muted);font-size:15px;max-width:460px;margin:0 auto 22px}

/* ---------- 上下篇 ---------- */
.post-nav{
  display:grid;grid-template-columns:1fr;gap:16px;
  margin-top:56px;max-width:800px;margin-left:auto;margin-right:auto;
}
@media (min-width:768px){.post-nav{grid-template-columns:1fr 1fr}}
.post-nav-card{
  display:block;border:1px solid var(--line);background:var(--paper-2);
  border-radius:var(--radius-md);padding:20px 22px;
  transition:border-color .25s var(--ease),transform .25s var(--ease),box-shadow .3s var(--ease);
}
.post-nav-card:hover{border-color:rgba(106,76,240,.4);transform:translateY(-2px);box-shadow:var(--shadow-card-hover)}
.post-nav-card .post-nav-label{
  display:block;font-size:12.5px;font-weight:600;letter-spacing:.05em;
  color:var(--brand-600);margin-bottom:8px;
}
.post-nav-card strong{font-size:16px;color:var(--text-strong);line-height:1.5;font-weight:600;display:block}
.post-nav-card:hover strong{color:var(--brand-600)}
.post-nav-card.is-right{text-align:right}
@media (min-width:768px){.post-nav-card.is-right{text-align:right}}

/* ---------- 相关推荐 ---------- */
.related-section{padding:72px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:24px;letter-spacing:-.01em}
@media (min-width:1024px){.section-head h2{font-size:28px}}
.related-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr);gap:28px}}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;
  border:1px solid var(--line);background:var(--paper-2);
  border-radius:var(--radius-lg);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .25s var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:rgba(106,76,240,.32)}
.rel-card figure{margin:0;overflow:hidden}
.rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s var(--ease)}
.rel-card:hover img{transform:scale(1.03)}
.rel-body{padding:20px 22px 22px}
.rel-body h3{font-size:18px;line-height:1.5;transition:color .25s var(--ease)}
.rel-card:hover h3{color:var(--brand-600)}
.rel-body p{font-size:14.5px;color:var(--text-muted);margin-top:10px;line-height:1.75}
.rel-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-muted);
}

/* ---------- 返回链接 ---------- */
.back-links{
  display:flex;flex-wrap:wrap;gap:24px;
  max-width:800px;margin:40px auto 0;
  padding-top:28px;border-top:1px solid var(--line);
}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:var(--ink-900);color:rgba(255,255,255,.75);
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-brand);
}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:36px;
  padding:64px 0 40px;
}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:48px;padding:72px 0 48px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand strong{color:#fff;font-size:16px}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px}
.footer-col h3{
  font-size:14px;font-weight:600;color:#fff;letter-spacing:.04em;margin-bottom:16px;
}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li + li{margin-top:12px}
.footer-col a{
  position:relative;font-size:14px;color:rgba(255,255,255,.6);
  padding-left:0;transition:color .22s var(--ease),padding-left .22s var(--ease);
}
.footer-col a:hover{color:#fff;padding-left:12px}
.footer-col a:hover::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--accent-teal);
}
.footer-form{margin-top:16px}
.footer-form label{display:block;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:8px}
.footer-input{
  width:100%;height:46px;border-radius:14px;padding:0 14px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  color:#fff;outline:none;transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.footer-input::placeholder{color:rgba(255,255,255,.35)}
.footer-input:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(126,99,245,.2)}
.footer-form .btn{margin-top:14px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  padding:22px 0 32px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 动画 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --ink-900:#100C1F;
  --ink-700:#1C1633;
  --paper:#F7F6FC;
  --paper-2:#FFFFFF;
  --line:#E8E5F3;
  --brand-600:#6A4CF0;
  --brand-500:#7E63F5;
  --brand-050:#F0EDFE;
  --accent-teal:#17C3B2;
  --accent-amber:#FFB347;
  --grad-brand:linear-gradient(115deg,#6A4CF0 0%,#8B5CF6 42%,#17C3B2 100%);
  --text-strong:#171232;
  --text:#3B3757;
  --text-muted:#6E6A8A;
  --shadow-card:0 2px 4px rgba(23,18,50,.04), 0 24px 48px -32px rgba(106,76,240,.35);
  --shadow-hover:0 2px 6px rgba(23,18,50,.05), 0 28px 52px -30px rgba(106,76,240,.46);
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul{list-style:none;padding:0}
:focus-visible{outline:2px solid rgba(106,76,240,.55);outline-offset:2px;border-radius:6px}
[id]{scroll-margin-top:100px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px;max-width:1240px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(247,246,252,0);
  border-bottom:1px solid rgba(23,18,50,.08);
  transition:background .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:rgba(23,18,50,.1);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  flex:0 0 auto;width:36px;height:36px;border-radius:12px;display:grid;place-items:center;
  background-image:var(--grad-brand);color:#fff;font-size:13px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 8px 20px -10px rgba(106,76,240,.8);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.brand-text strong{font-size:16px;font-weight:600;color:var(--text-strong);letter-spacing:-.01em;white-space:nowrap}
.brand-text em{font-style:normal;font-size:12px;color:var(--text-muted);letter-spacing:.02em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;font-size:15px;color:var(--text);padding:6px 0;transition:color .25s var(--ease)}
.nav-link::after{
  content:'';position:absolute;left:-4px;right:-4px;bottom:0;height:2px;border-radius:2px;
  background-image:var(--grad-brand);transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--ease);
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text-strong);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;font-size:15px;font-weight:500;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),background-color .35s var(--ease),background-position .35s var(--ease),border-color .35s var(--ease);
}
.btn-primary{
  background-image:var(--grad-brand);background-size:160% 100%;background-position:0 0;color:#fff;
  box-shadow:0 10px 24px -14px rgba(106,76,240,.85);
}
.btn-primary:hover{background-position:100% 0;transform:translateY(-1px);box-shadow:0 14px 28px -12px rgba(106,76,240,.5)}
.btn-primary:active{transform:translateY(0) scale(.985)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-strong)}
.btn-ghost:hover{background:var(--brand-050);border-color:rgba(106,76,240,.4)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;color:var(--brand-600);
  position:relative;background-image:linear-gradient(currentColor,currentColor);
  background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;
  transition:background-size .25s var(--ease),color .25s var(--ease);
  padding-bottom:2px;
}
.link-arrow::after{content:'→';transition:transform .25s var(--ease)}
.link-arrow:hover{background-size:100% 1px;color:var(--accent-teal)}
.link-arrow:hover::after{transform:translateX(3px)}
.link-muted{font-size:14px;color:var(--text-muted);transition:color .25s var(--ease)}
.link-muted:hover{color:var(--accent-teal)}

/* ---------- 移动端菜单 ---------- */
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-sm);border:1px solid var(--line);
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.menu-toggle span{width:18px;height:1.5px;border-radius:2px;background:var(--text-strong);transition:transform .3s var(--ease),opacity .3s var(--ease)}
.menu-toggle.is-open span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.menu-toggle.is-open span:nth-child(2){opacity:0}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}
.panel-overlay{
  position:fixed;inset:0;background:rgba(16,12,31,.4);z-index:55;opacity:0;pointer-events:none;
  transition:opacity .3s var(--ease);
}
.panel-overlay.is-open{opacity:1;pointer-events:auto}
.mobile-panel{
  position:fixed;top:0;right:0;bottom:0;width:min(88vw,380px);z-index:60;
  background:var(--paper-2);transform:translateX(100%);
  transition:transform .35s var(--ease);
  padding:26px 26px 32px;display:flex;flex-direction:column;gap:22px;
  box-shadow:-24px 0 60px -30px rgba(23,18,50,.4);
}
.mobile-panel.is-open{transform:translateX(0)}
.panel-head{display:flex;align-items:center;justify-content:space-between}
.panel-close{
  width:40px;height:40px;border-radius:var(--radius-sm);border:1px solid var(--line);background:#fff;
  font-size:16px;line-height:1;cursor:pointer;color:var(--text-muted);
}
.panel-nav{display:flex;flex-direction:column;gap:6px}
.panel-nav a{
  position:relative;font-size:20px;padding:14px 0 14px 22px;color:var(--text);
  border-bottom:1px solid var(--line);transition:color .25s var(--ease);
}
.panel-nav a::before{
  content:'';position:absolute;left:0;top:50%;transform:translateY(-50%) scale(0);
  width:6px;height:6px;border-radius:999px;background-image:var(--grad-brand);transition:transform .25s var(--ease);
}
.panel-nav a:hover{color:var(--brand-600)}
.panel-nav a.is-active{color:var(--brand-600);font-weight:600}
.panel-nav a.is-active::before{transform:translateY(-50%) scale(1)}

/* ---------- 页头 ---------- */
.page-head{position:relative;padding:64px 0 56px;background:var(--paper);overflow:hidden}
.page-head::before{
  content:'';position:absolute;inset:0;
  background-image:radial-gradient(rgba(23,195,178,.08) 1px,transparent 1px);
  background-size:22px 22px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 78%);
}
.page-head::after{
  content:'';position:absolute;right:-140px;top:-160px;width:520px;height:520px;border-radius:999px;
  background:radial-gradient(circle,rgba(106,76,240,.14),transparent 68%);
  pointer-events:none;
}
.page-head .container{position:relative;z-index:1}
.head-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:48px;align-items:center}
.tag{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  background:var(--brand-050);color:var(--brand-600);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.tag::before{content:'';width:6px;height:6px;border-radius:999px;background-image:var(--grad-brand)}
.page-head h1{
  margin-top:18px;font-size:30px;line-height:1.24;font-weight:600;color:var(--text-strong);
  letter-spacing:-.02em;
}
.head-lead{margin-top:16px;font-size:16px;line-height:1.85;color:var(--text);max-width:640px}
.head-actions{margin-top:28px;display:flex;flex-wrap:wrap;align-items:center;gap:22px}
.head-side{display:flex;flex-direction:column;gap:14px}
.head-card{
  position:relative;overflow:hidden;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-card);
}
.head-card::after{
  content:'';position:absolute;right:-50px;top:-50px;width:150px;height:150px;border-radius:999px;
  background:radial-gradient(circle,rgba(23,195,178,.22),transparent 70%);
}
.head-card-label{font-size:13px;color:var(--text-muted);letter-spacing:.02em}
.head-card strong{
  display:block;margin-top:6px;font-size:30px;font-weight:700;letter-spacing:-.02em;
  background-image:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums;
}
.head-card-note{display:block;margin-top:6px;font-size:14px;color:var(--text-muted)}
.head-mini{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:16px 20px;font-size:14px;color:var(--text-muted);
}
.head-mini b{color:var(--text-strong);font-weight:600;font-size:14px}

/* ---------- 板块 ---------- */
.section{padding:64px 0}
.section-head{max-width:720px;margin-bottom:36px}
.section-head h2{font-size:26px;font-weight:600;color:var(--text-strong);letter-spacing:-.02em;line-height:1.35}
.section-head p{margin-top:14px;font-size:15px;color:var(--text-muted);line-height:1.85}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--brand-600);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:'';width:18px;height:1px;background-image:var(--grad-brand)}

/* ---------- 步骤区 ---------- */
.steps{display:grid;grid-template-columns:248px minmax(0,1fr);gap:48px;align-items:start}
.steps-rail{position:sticky;top:104px;display:flex;flex-direction:column;gap:2px}
.rail-item{
  position:relative;display:flex;align-items:center;gap:14px;padding:10px 6px;font-size:14px;
  color:var(--text-muted);transition:color .25s var(--ease);
}
.rail-item:hover{color:var(--brand-600)}
.rail-num{
  flex:0 0 auto;width:36px;height:36px;border-radius:999px;display:grid;place-items:center;
  background:var(--paper-2);border:1px solid var(--line);font-size:13px;font-weight:700;
  color:var(--text-muted);font-variant-numeric:tabular-nums;
  transition:background-image .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.rail-item:not(:last-child)::after{
  content:'';position:absolute;left:23px;top:48px;bottom:-4px;width:1px;
  background:linear-gradient(180deg,rgba(106,76,240,.42),rgba(23,195,178,.34));
}
.rail-item.is-current{color:var(--text-strong);font-weight:600}
.rail-item.is-current .rail-num{
  background-image:var(--grad-brand);color:#fff;border-color:transparent;
  box-shadow:0 8px 18px -10px rgba(106,76,240,.9);
}
.steps-body{display:flex;flex-direction:column;gap:24px;min-width:0}
.step-card{
  display:grid;grid-template-columns:minmax(0,288px) minmax(0,1fr);
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.step-figure{position:relative;overflow:hidden;background:linear-gradient(135deg,#1C1633,#3B2E6E)}
.step-figure img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s var(--ease)}
.step-card:hover .step-figure img{transform:scale(1.04)}
.step-content{padding:28px 32px;display:flex;flex-direction:column;gap:12px;min-width:0}
.step-index{
  align-self:flex-start;display:inline-flex;align-items:center;gap:8px;
  padding:4px 12px;border-radius:999px;background:var(--brand-050);
  color:var(--brand-600);font-size:12px;font-weight:600;letter-spacing:.04em;
}
.step-content h3{font-size:19px;font-weight:600;color:var(--text-strong);line-height:1.5}
.step-content p{font-size:15px;line-height:1.8;color:var(--text)}
.step-points{display:flex;flex-direction:column;gap:8px;margin-top:2px}
.step-points li{position:relative;padding-left:20px;font-size:14px;line-height:1.75;color:var(--text-muted)}
.step-points li::before{
  content:'';position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:3px;
  background-image:var(--grad-brand);
}

/* ---------- 参数表 ---------- */
.spec-wrap{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow-x:auto;box-shadow:var(--shadow-card);
}
.spec-table{width:100%;min-width:620px;border-collapse:collapse;font-size:15px}
.spec-table th{
  background:var(--brand-050);color:var(--text-strong);font-weight:600;text-align:left;
  padding:14px 22px;font-size:14px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.spec-table td{
  padding:16px 22px;border-bottom:1px solid var(--line);color:var(--text);
  vertical-align:top;line-height:1.75;
}
.spec-table tbody tr:last-child td{border-bottom:none}
.spec-table tbody tr{transition:background-color .25s var(--ease)}
.spec-table tbody tr:hover{background:rgba(240,237,254,.55)}
.spec-table td:first-child{color:var(--text-strong);font-weight:600;white-space:nowrap}

/* ---------- 提示卡 ---------- */
.tip-card{
  display:flex;gap:16px;padding:24px 26px;border-radius:var(--radius-sm);
  background:var(--brand-050);border:1px solid rgba(106,76,240,.18);
}
.tip-icon{
  flex:0 0 auto;width:36px;height:36px;border-radius:12px;display:grid;place-items:center;
  background:var(--paper-2);border:1px solid rgba(106,76,240,.22);
  color:var(--brand-600);font-size:15px;font-weight:700;
}
.tip-body h3{font-size:16px;font-weight:600;color:var(--text-strong);margin-bottom:6px}
.tip-body p{font-size:14px;line-height:1.8;color:var(--text)}

/* ---------- 问答列表 ---------- */
.qa-list{border-top:1px solid var(--line)}
.qa-item{padding:24px 0;border-bottom:1px solid var(--line)}
.qa-item h3{
  position:relative;padding-left:22px;font-size:17px;font-weight:600;color:var(--text-strong);
  line-height:1.6;margin-bottom:8px;
}
.qa-item h3::before{
  content:'';position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:999px;
  background-image:var(--grad-brand);
}
.qa-item p{padding-left:22px;font-size:15px;line-height:1.85;color:var(--text)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:var(--ink-900);padding:48px 40px;
}
.cta-band::before{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(620px 260px at 12% 0%,rgba(106,76,240,.5),transparent 70%),
    radial-gradient(520px 240px at 88% 110%,rgba(23,195,178,.3),transparent 72%);
}
.cta-band::after{
  content:'';position:absolute;inset:0;border-radius:var(--radius-lg);
  border:1px solid rgba(255,255,255,.08);pointer-events:none;
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:26px;font-weight:600;color:#fff;letter-spacing:-.02em;line-height:1.35}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.66);max-width:560px}
.cta-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.cta-link{font-size:15px;color:rgba(255,255,255,.72);transition:color .25s var(--ease)}
.cta-link:hover{color:var(--accent-teal)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;margin-top:96px;padding:64px 0 32px;
  background:var(--ink-900);color:#fff;
}
.site-footer::before{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;background-image:var(--grad-brand);
}
.footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand strong{font-size:16px;font-weight:600;color:#fff;letter-spacing:-.01em}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);max-width:340px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{position:relative;padding-left:14px}
.footer-col li::before{
  content:'';position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:999px;
  background:var(--accent-teal);transform:scale(0);transition:transform .25s var(--ease);
}
.footer-col li:hover::before{transform:scale(1)}
.footer-col a{font-size:14px;color:rgba(255,255,255,.6);transition:color .25s var(--ease)}
.footer-col a:hover{color:#fff}
.footer-form{display:flex;flex-direction:column;gap:8px;margin-top:14px}
.footer-form label{font-size:13px;color:rgba(255,255,255,.6);letter-spacing:.02em}
.footer-input{
  height:46px;border-radius:14px;border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);padding:0 14px;color:#fff;font-size:14px;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background-color .25s var(--ease);
}
.footer-input::placeholder{color:rgba(255,255,255,.35)}
.footer-input:focus{
  outline:none;border-color:rgba(106,76,240,.85);background:rgba(255,255,255,.1);
  box-shadow:0 0 0 3px rgba(106,76,240,.22);
}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (min-width:641px){
  .page-head h1{font-size:38px}
}
@media (min-width:1024px){
  .page-head{padding:76px 0 68px}
  .page-head h1{font-size:46px}
  .section{padding:96px 0}
  .section-head h2{font-size:30px}
  .section-head p{font-size:16px}
  .cta-band{padding:56px 56px}
  .cta-inner h2{font-size:30px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .header-actions .btn{display:none}
  .menu-toggle{display:flex}
  .head-grid{grid-template-columns:1fr;gap:32px}
  .head-side{flex-direction:row;flex-wrap:wrap}
  .head-side > *{flex:1 1 220px}
  .steps{grid-template-columns:1fr;gap:28px}
  .steps-rail{
    position:static;flex-direction:row;gap:10px;overflow-x:auto;padding-bottom:6px;
    scrollbar-width:none;-ms-overflow-style:none;
  }
  .steps-rail::-webkit-scrollbar{display:none}
  .rail-item{
    flex:0 0 auto;padding:6px 16px 6px 6px;border:1px solid var(--line);
    border-radius:999px;background:var(--paper-2);
  }
  .rail-item:not(:last-child)::after{display:none}
  .rail-num{width:30px;height:30px;font-size:12px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .site-footer{margin-top:72px}
}
@media (max-width:767px){
  .step-card{grid-template-columns:1fr}
  .step-figure{aspect-ratio:16/10}
  .step-figure img{position:absolute;inset:0}
  .step-content{padding:22px 22px 26px}
  .step-content h3{font-size:18px}
  .spec-table th,.spec-table td{padding:13px 16px}
  .cta-band{padding:34px 24px}
  .cta-inner h2{font-size:22px}
  .site-footer{padding:52px 0 28px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-about{max-width:none}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:639px){
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
  .section-head h2{font-size:22px}
  .page-head{padding:48px 0 44px}
  .head-card{padding:20px}
  .head-card strong{font-size:26px}
  .tip-card{flex-direction:column;gap:12px}
  .head-actions{gap:16px}
  .btn{height:44px;padding:0 22px;font-size:14px}
}

/* roulang page: category1 */
:root{
    --ink-900:#100C1F;
    --ink-700:#1C1633;
    --paper:#F7F6FC;
    --paper-2:#FFFFFF;
    --line:#E8E5F3;
    --brand-600:#6A4CF0;
    --brand-500:#7E63F5;
    --brand-050:#F0EDFE;
    --accent-teal:#17C3B2;
    --accent-amber:#FFB347;
    --grad-brand:linear-gradient(115deg,#6A4CF0 0%,#8B5CF6 42%,#17C3B2 100%);
    --text-strong:#171232;
    --text:#3B3757;
    --text-muted:#6E6A8A;
    --radius-lg:24px;
    --radius-md:18px;
    --radius-sm:12px;
    --shadow-card:0 2px 4px rgba(23,18,50,.04),0 24px 48px -32px rgba(106,76,240,.35);
    --shadow-card-hover:0 2px 4px rgba(23,18,50,.05),0 28px 52px -30px rgba(106,76,240,.45);
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;scroll-padding-top:96px}
  body{
    margin:0;
    background:var(--paper);
    color:var(--text);
    font-family:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{display:block;max-width:100%;height:auto}
  a{color:inherit;text-decoration:none}
  button,input,select,textarea{font:inherit;color:inherit}
  button{background:none;border:0;cursor:pointer}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  :focus-visible{outline:2px solid rgba(106,76,240,.55);outline-offset:2px;border-radius:8px}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:1024px){.container{max-width:1240px;padding:0 32px}}

  /* ============ 导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(247,246,252,.86);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-bottom:1px solid rgba(23,18,50,.08);
    transition:background .3s var(--ease),border-color .3s var(--ease);
  }
  .site-header.is-scrolled{background:rgba(247,246,252,.94);border-bottom-color:rgba(23,18,50,.14)}
  .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
  .brand{display:flex;align-items:center;gap:11px;min-width:0}
  .brand-mark{
    width:36px;height:36px;flex:none;border-radius:12px;
    background:var(--grad-brand);color:#fff;
    display:grid;place-items:center;
    font-size:14px;font-weight:700;letter-spacing:.04em;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
  .brand-text strong{font-size:16px;font-weight:600;color:var(--text-strong);white-space:nowrap}
  .brand-text span{font-size:12px;color:var(--text-muted);letter-spacing:.04em;white-space:nowrap}

  .nav-links{display:none;align-items:center;gap:28px}
  .nav-link{
    position:relative;font-size:15px;color:var(--text);padding:6px 0;
    transition:color .25s var(--ease);white-space:nowrap;
  }
  .nav-link::after{
    content:'';position:absolute;left:-4px;right:-4px;bottom:-2px;height:2px;border-radius:2px;
    background:var(--grad-brand);transform:scaleX(0);transform-origin:left;
    transition:transform .25s var(--ease);
  }
  .nav-link:hover{color:var(--brand-600)}
  .nav-link.is-active{color:var(--brand-600);font-weight:600}
  .nav-link.is-active::after{transform:scaleX(1)}
  .nav-right{display:none;align-items:center;gap:14px}
  .menu-toggle{
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
    background:var(--paper-2);color:var(--text-strong);
    display:inline-flex;align-items:center;justify-content:center;
    transition:background .25s var(--ease),border-color .25s var(--ease);
  }
  .menu-toggle:hover{background:var(--brand-050);border-color:rgba(106,76,240,.35)}
  @media (min-width:1024px){
    .nav-links{display:flex}
    .nav-right{display:flex}
    .menu-toggle{display:none}
  }

  .mobile-panel{
    position:fixed;left:0;right:0;top:72px;z-index:55;
    height:0;overflow:hidden;background:var(--paper-2);
    border-bottom:1px solid var(--line);
    transition:height .32s var(--ease);
  }
  .mobile-panel.is-open{height:calc(100vh - 72px);overflow-y:auto}
  .mobile-panel .panel-inner{padding:16px 20px 36px;display:grid;gap:6px}
  .mobile-panel nav a{
    display:block;padding:16px 0;font-size:19px;color:var(--text-strong);
    border-bottom:1px solid var(--line);
  }
  .mobile-panel nav a.is-active{color:var(--brand-600);font-weight:600;display:flex;align-items:center;gap:10px}
  .mobile-panel nav a.is-active::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--brand-600)}
  .mobile-panel .btn{margin-top:22px}
  @media (min-width:1024px){.mobile-panel{display:none}}

  /* ============ 按钮 / 链接 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 28px;border-radius:999px;
    font-size:15px;font-weight:600;letter-spacing:.01em;
    border:1px solid transparent;cursor:pointer;
    transition:all .35s var(--ease);
  }
  .btn-primary{
    background-image:var(--grad-brand);background-size:160% 100%;background-position:0 0;
    color:#fff;box-shadow:0 10px 24px -14px rgba(106,76,240,.6);
  }
  .btn-primary:hover{background-position:100% 0;transform:translateY(-1px);box-shadow:0 14px 28px -12px rgba(106,76,240,.5)}
  .btn-primary:active{transform:translateY(0) scale(.985)}
  .btn-ghost{background:transparent;border-color:var(--line);color:var(--text-strong)}
  .btn-ghost:hover{background:var(--brand-050);border-color:rgba(106,76,240,.4)}
  .btn-sm{height:40px;padding:0 20px;font-size:14px}
  .btn-block{width:100%;margin-top:6px}
  @media (max-width:639px){.btn{height:44px;padding:0 22px;font-size:14.5px}}

  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--brand-600);font-size:14px;font-weight:600;
    transition:color .25s var(--ease);
  }
  .link-arrow .arrow{transition:transform .3s var(--ease)}
  .link-arrow:hover{color:var(--accent-teal)}
  .link-arrow:hover .arrow{transform:translateX(4px)}

  /* ============ 通用板块 ============ */
  .section{padding:64px 0}
  @media (min-width:1024px){.section{padding:96px 0}}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
  .section-head h2{font-size:26px;font-weight:600;color:var(--text-strong);line-height:1.32;letter-spacing:-.01em;margin-top:8px}
  @media (min-width:1024px){.section-head h2{font-size:32px}}
  .section-head p.lead{font-size:15px;color:var(--text-muted);max-width:600px;margin-top:10px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:600;letter-spacing:.1em;color:var(--brand-600);
  }
  .eyebrow::before{content:'';width:18px;height:1px;background:var(--grad-brand);border-radius:2px}

  /* ============ 分类页头 ============ */
  .page-hero{position:relative;overflow:hidden;background:var(--paper);border-bottom:1px solid var(--line)}
  .page-hero::before{
    content:'';position:absolute;inset:0;
    background-image:radial-gradient(rgba(23,195,178,.55) 1px,transparent 1px);
    background-size:22px 22px;opacity:.14;pointer-events:none;
  }
  .page-hero::after{
    content:'';position:absolute;right:-140px;top:-160px;width:460px;height:460px;
    background:radial-gradient(circle,rgba(106,76,240,.16),transparent 66%);
    pointer-events:none;
  }
  .hero-inner{position:relative;display:grid;gap:28px;padding:52px 0 46px}
  @media (min-width:1024px){
    .hero-inner{grid-template-columns:minmax(0,1fr) 300px;align-items:center;gap:56px;padding:76px 0 68px}
  }
  .page-hero h1{
    font-size:clamp(28px,4.4vw,40px);font-weight:600;line-height:1.24;
    letter-spacing:-.02em;color:var(--text-strong);margin-top:14px;
  }
  .page-hero .hero-sub{font-size:16px;color:var(--text);margin-top:16px;max-width:620px}
  .hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:28px}
  .hero-side{display:grid;gap:14px}
  .stat-badge{
    background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-md);
    padding:18px 20px;box-shadow:var(--shadow-card);
  }
  .stat-badge .stat-num{font-size:28px;font-weight:700;color:var(--accent-amber);line-height:1.1;letter-spacing:-.01em}
  .stat-badge .stat-label{font-size:13px;color:var(--text-muted);margin-top:8px;letter-spacing:.02em}
  .stat-badge + .stat-badge{margin-top:0}

  /* ============ 筛选胶囊 ============ */
  .filter-row{
    display:flex;gap:10px;overflow-x:auto;padding:4px 2px 10px;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  .filter-row::-webkit-scrollbar{display:none}
  .chip{
    flex:none;height:40px;padding:0 20px;border-radius:999px;
    border:1px solid var(--line);background:var(--paper-2);
    color:var(--text);font-size:14px;font-weight:500;white-space:nowrap;
    display:inline-flex;align-items:center;gap:8px;
    transition:all .3s var(--ease);
  }
  .chip:hover{border-color:rgba(106,76,240,.4);color:var(--brand-600)}
  .chip.is-on{
    background-image:var(--grad-brand);background-size:150% 100%;
    border-color:transparent;color:#fff;font-weight:600;
    box-shadow:0 10px 22px -14px rgba(106,76,240,.7);
  }

  /* ============ 通道列表布局 ============ */
  .list-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;margin-top:12px}
  @media (min-width:1024px){.list-layout{grid-template-columns:minmax(0,1fr) 280px;gap:36px;align-items:start}}
  .passage-grid{display:grid;grid-template-columns:1fr;gap:24px;margin-top:20px}
  @media (min-width:768px){.passage-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}

  .passage-card{
    display:flex;flex-direction:column;gap:14px;
    background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:26px;box-shadow:var(--shadow-card);
    transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
  }
  .passage-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:rgba(106,76,240,.24)}
  .passage-card:hover h3{color:var(--brand-600)}
  .card-top{display:flex;align-items:center;gap:12px}
  .card-num{
    font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--brand-600);
    background:var(--brand-050);border-radius:999px;padding:4px 12px;
  }
  .card-icon{
    width:40px;height:40px;border-radius:50%;flex:none;
    background:var(--brand-050);color:var(--brand-600);
    display:grid;place-items:center;
  }
  .card-icon svg{width:20px;height:20px}
  .card-time{margin-left:auto;font-size:12.5px;color:var(--text-muted);white-space:nowrap}
  .passage-card h3{font-size:19px;font-weight:600;color:var(--text-strong);line-height:1.45;transition:color .3s var(--ease)}
  .passage-card p{font-size:14.5px;color:var(--text);line-height:1.78}
  .card-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    border-top:1px solid var(--line);padding-top:14px;margin-top:auto;
  }
  .tag{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
    background:var(--brand-050);color:var(--brand-600);font-size:12.5px;font-weight:600;letter-spacing:.02em;
  }

  /* ============ 粘性索引 ============ */
  .side-index{display:grid;gap:18px}
  @media (min-width:1024px){.side-index{position:sticky;top:96px}}
  .index-card{
    background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-md);
    padding:22px;box-shadow:var(--shadow-card);
  }
  .index-card h3{font-size:14px;font-weight:600;color:var(--text-strong);letter-spacing:.04em;margin-bottom:14px}
  .index-card ul{display:grid;gap:4px}
  .index-card a{
    position:relative;display:block;padding:9px 0 9px 16px;
    font-size:14px;color:var(--text-muted);transition:color .25s var(--ease),padding-left .25s var(--ease);
  }
  .index-card a::before{
    content:'';position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:2px;
    background:var(--grad-brand);opacity:0;transition:opacity .25s var(--ease);
  }
  .index-card a:hover{color:var(--brand-600);padding-left:18px}
  .index-card a.is-current{color:var(--brand-600);font-weight:600;padding-left:18px}
  .index-card a.is-current::before{opacity:1}
  .index-note{
    background:var(--brand-050);border:1px solid rgba(106,76,240,.16);border-radius:var(--radius-md);
    padding:20px;font-size:13.5px;color:var(--text);line-height:1.8;
  }
  .index-note strong{display:block;color:var(--text-strong);font-size:14px;margin-bottom:8px}

  /* ============ 流程 ============ */
  .flow-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:36px;align-items:center}
  @media (min-width:1024px){.flow-layout{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:56px}}
  .flow-steps{position:relative;display:grid;gap:26px}
  .flow-steps::before{
    content:'';position:absolute;left:17px;top:16px;bottom:16px;width:1px;
    background:linear-gradient(180deg,rgba(106,76,240,.55),rgba(23,195,178,.5));
  }
  .flow-steps li{position:relative;display:grid;grid-template-columns:36px minmax(0,1fr);gap:18px}
  .step-num{
    width:36px;height:36px;border-radius:50%;flex:none;
    background:var(--paper-2);border:1px solid rgba(106,76,240,.3);
    color:var(--brand-600);font-size:13px;font-weight:700;
    display:grid;place-items:center;position:relative;z-index:1;
  }
  .flow-steps h3{font-size:18px;font-weight:600;color:var(--text-strong);line-height:1.5}
  .flow-steps p{font-size:14.5px;color:var(--text-muted);margin-top:6px;line-height:1.8}
  .flow-figure{margin:0}
  .flow-figure img{
    width:100%;aspect-ratio:16/10;object-fit:cover;
    border-radius:var(--radius-lg);border:1px solid var(--line);
    box-shadow:var(--shadow-card);background:linear-gradient(135deg,#EFEDFB,#E7F7F5);
  }
  .flow-figure figcaption{font-size:13px;color:var(--text-muted);margin-top:12px;line-height:1.7}

  /* ============ 对照表 ============ */
  .table-wrap{
    overflow-x:auto;background:var(--paper-2);
    border:1px solid var(--line);border-radius:var(--radius-md);
    box-shadow:var(--shadow-card);
  }
  .compare-table{width:100%;min-width:640px;border-collapse:collapse;font-size:14.5px}
  .compare-table th{
    background:var(--brand-050);color:var(--brand-600);
    font-size:13px;font-weight:600;letter-spacing:.04em;text-align:left;
    padding:14px 18px;white-space:nowrap;
  }
  .compare-table td{
    padding:16px 18px;color:var(--text);
    border-top:1px solid var(--line);line-height:1.7;
  }
  .compare-table td strong{color:var(--text-strong);font-weight:600}
  .compare-table tbody tr{transition:background .25s var(--ease)}
  .compare-table tbody tr:hover{background:rgba(240,237,254,.5)}
  .compare-table .ok{color:var(--accent-teal);font-weight:600}

  /* ============ 检查清单 ============ */
  .check-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:24px}
  @media (min-width:1024px){.check-layout{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:28px;align-items:start}}
  .check-list{
    background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:26px;box-shadow:var(--shadow-card);display:grid;gap:16px;
  }
  .check-list li{display:grid;grid-template-columns:22px minmax(0,1fr);gap:14px;align-items:start}
  .check-list .tick{
    width:22px;height:22px;border-radius:50%;margin-top:3px;
    background:var(--brand-050);color:var(--brand-600);
    display:grid;place-items:center;font-size:12px;font-weight:700;
  }
  .check-list strong{display:block;font-size:15.5px;color:var(--text-strong);font-weight:600}
  .check-list span.desc{font-size:14px;color:var(--text-muted);line-height:1.78}
  .tip-card{
    background:var(--brand-050);border:1px solid rgba(106,76,240,.16);
    border-radius:var(--radius-lg);padding:26px;
  }
  .tip-card h3{font-size:17px;font-weight:600;color:var(--text-strong);margin-bottom:12px}
  .tip-card p{font-size:14.5px;color:var(--text);line-height:1.85}
  .tip-card ul{margin-top:16px;display:grid;gap:10px}
  .tip-card ul li{position:relative;padding-left:16px;font-size:14px;color:var(--text)}
  .tip-card ul li::before{
    content:'';position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;
    background:var(--accent-teal);
  }

  /* ============ FAQ ============ */
  .faq-list{display:grid;gap:12px;max-width:900px}
  .faq-item{
    background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-md);
    padding:0 22px;transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
  }
  .faq-item:hover{border-color:rgba(106,76,240,.24)}
  .faq-item.is-open{box-shadow:var(--shadow-card)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:20px 0;text-align:left;
  }
  .faq-q span{font-size:17px;font-weight:600;color:var(--text-strong);line-height:1.6}
  .faq-icon{position:relative;width:14px;height:14px;flex:none}
  .faq-icon::before,.faq-icon::after{
    content:'';position:absolute;left:0;top:6px;width:14px;height:2px;border-radius:2px;
    background:var(--brand-600);transition:transform .25s var(--ease);
  }
  .faq-icon::after{transform:rotate(90deg)}
  .faq-item.is-open .faq-icon::after{transform:rotate(0)}
  .faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .3s var(--ease),opacity .25s var(--ease)}
  .faq-item.is-open .faq-a{opacity:1}
  .faq-a p{font-size:15px;color:var(--text);line-height:1.85;padding-bottom:22px}

  /* ============ CTA / 反馈 ============ */
  .cta-panel{
    position:relative;overflow:hidden;
    background:var(--ink-900);color:#fff;border-radius:var(--radius-lg);
    padding:36px 22px;display:grid;gap:30px;
    border:1px solid rgba(255,255,255,.08);
  }
  .cta-panel::after{
    content:'';position:absolute;left:-80px;bottom:-160px;width:420px;height:420px;
    background:radial-gradient(circle,rgba(106,76,240,.35),transparent 66%);pointer-events:none;
  }
  @media (min-width:1024px){.cta-panel{grid-template-columns:minmax(0,1fr) 400px;gap:56px;padding:56px}}
  .cta-copy{position:relative;z-index:1}
  .cta-copy h2{font-size:26px;font-weight:600;color:#fff;line-height:1.35;letter-spacing:-.01em}
  @media (min-width:1024px){.cta-copy h2{font-size:30px}}
  .cta-copy p{font-size:15px;color:rgba(255,255,255,.72);margin-top:14px;line-height:1.85}
  .cta-points{margin-top:22px;display:grid;gap:10px}
  .cta-points li{position:relative;padding-left:18px;font-size:14px;color:rgba(255,255,255,.72)}
  .cta-points li::before{
    content:'';position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;
    background:linear-gradient(135deg,#7E63F5,#17C3B2);
  }
  .cta-form{
    position:relative;z-index:1;
    background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
    border-radius:var(--radius-md);padding:24px;
  }
  .cta-form .field{margin-bottom:16px}
  .cta-form label{display:block;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:8px;letter-spacing:.02em}
  .cta-form input,.cta-form select{
    width:100%;height:46px;border-radius:14px;padding:0 14px;
    background:#fff;border:1px solid var(--line);color:var(--text-strong);font-size:14px;
    transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
  }
  .cta-form input::placeholder{color:#9B97B4}
  .cta-form input:focus,.cta-form select:focus{
    outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(106,76,240,.18);
  }
  .cta-form .btn-primary{margin-top:8px}
  .cta-form .form-tip{font-size:13px;color:rgba(255,255,255,.55);min-height:20px;margin-top:10px}

  /* ============ 页脚 ============ */
  .site-footer{
    position:relative;background:var(--ink-900);color:rgba(255,255,255,.6);
    padding:64px 0 28px;margin-top:8px;
  }
  .site-footer::before{
    content:'';position:absolute;top:0;left:0;right:0;height:1px;
    background:var(--grad-brand);opacity:.65;
  }
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
  @media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;font-size:13px}
  .footer-brand strong{font-size:16px;color:#fff;font-weight:600;letter-spacing:.01em}
  .footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6)}
  .footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;letter-spacing:.04em}
  .footer-col ul{display:grid;gap:10px}
  .footer-col a{
    position:relative;font-size:14px;color:rgba(255,255,255,.6);
    transition:color .25s var(--ease),padding-left .25s var(--ease);
  }
  .footer-col a::before{
    content:'';position:absolute;left:-12px;top:50%;transform:translateY(-50%);
    width:6px;height:6px;border-radius:50%;background:var(--accent-teal);
    opacity:0;transition:opacity .25s var(--ease);
  }
  .footer-col a:hover{color:#fff;padding-left:8px}
  .footer-col a:hover::before{opacity:1}
  .footer-form label{display:block;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:8px}
  .footer-input{
    width:100%;height:46px;border-radius:14px;padding:0 14px;margin-bottom:14px;
    background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
    color:#fff;font-size:14px;
    transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
  }
  .footer-input::placeholder{color:rgba(255,255,255,.42)}
  .footer-input:focus{outline:none;border-color:rgba(126,99,245,.85);box-shadow:0 0 0 3px rgba(106,76,240,.2)}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    border-top:1px solid rgba(255,255,255,.08);
    margin-top:44px;padding-top:22px;font-size:13px;color:rgba(255,255,255,.5);
  }
  .sr-only{
    position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
    clip:rect(0,0,0,0);white-space:nowrap;border:0;
  }

/* roulang page: category3 */
:root{
    --ink-900:#100C1F;
    --ink-700:#1C1633;
    --paper:#F7F6FC;
    --paper-2:#FFFFFF;
    --line:#E8E5F3;
    --brand-600:#6A4CF0;
    --brand-500:#7E63F5;
    --brand-050:#F0EDFE;
    --teal:#17C3B2;
    --amber:#FFB347;
    --grad-brand:linear-gradient(115deg,#6A4CF0 0%,#8B5CF6 42%,#17C3B2 100%);
    --text-strong:#171232;
    --text:#3B3757;
    --text-muted:#6E6A8A;
    --radius-lg:24px;
    --radius-md:18px;
    --radius-sm:14px;
    --shadow-card:0 2px 4px rgba(23,18,50,.04),0 24px 48px -32px rgba(106,76,240,.35);
    --shadow-hover:0 2px 4px rgba(23,18,50,.05),0 28px 52px -30px rgba(106,76,240,.45);
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.85;
    letter-spacing:0;
  }
  body.is-locked{overflow:hidden;}
  h1,h2,h3,h4{margin:0;color:var(--text-strong);font-weight:600;line-height:1.3;}
  p{margin:0 0 1em;}
  p:last-child{margin-bottom:0;}
  a{color:inherit;text-decoration:none;background:transparent;}
  img{max-width:100%;display:block;border:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  input,textarea,select{font:inherit;color:inherit;}
  :focus-visible{outline:2px solid rgba(106,76,240,.55);outline-offset:2px;border-radius:6px;}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:1024px){.container{padding:0 32px;}}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(247,246,252,.9);
    border-bottom:1px solid rgba(23,18,50,.08);
    transition:background .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(247,246,252,.86);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-bottom-color:rgba(23,18,50,.14);
  }
  .header-inner{
    min-height:72px;display:flex;align-items:center;gap:24px;justify-content:space-between;
  }
  .brand{display:flex;align-items:center;gap:12px;flex:none;}
  .brand-mark{
    width:40px;height:40px;border-radius:12px;flex:none;
    display:flex;align-items:center;justify-content:center;
    background:var(--grad-brand);color:#fff;font-size:14px;font-weight:700;
    letter-spacing:.04em;box-shadow:0 10px 22px -14px rgba(106,76,240,.9);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.25;}
  .brand-text strong{font-size:17px;color:var(--text-strong);font-weight:600;letter-spacing:-.01em;}
  .brand-text em{font-style:normal;font-size:12px;color:var(--text-muted);letter-spacing:.02em;}
  .nav-links{display:flex;align-items:center;gap:26px;}
  .nav-link{
    position:relative;font-size:15px;color:var(--text);padding:6px 0;
    transition:color .25s var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:50%;bottom:-2px;height:2px;width:0;border-radius:2px;
    background:var(--grad-brand);transform:translateX(-50%);
    transition:width .28s var(--ease);
  }
  .nav-link:hover{color:var(--brand-600);}
  .nav-link:hover::after{width:calc(100% + 8px);}
  .nav-link.is-active{color:var(--brand-600);font-weight:600;}
  .nav-link.is-active::after{width:calc(100% + 8px);}
  .header-actions{display:flex;align-items:center;gap:14px;flex:none;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 28px;border-radius:999px;
    font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
    transition:transform .35s var(--ease),box-shadow .35s var(--ease),background-color .35s var(--ease),border-color .35s var(--ease),color .35s var(--ease);
    border:1px solid transparent;white-space:nowrap;
  }
  .btn-primary{
    color:#fff;background-image:var(--grad-brand);background-size:160% 100%;background-position:0% 50%;
    box-shadow:0 10px 24px -18px rgba(106,76,240,.9);
  }
  .btn-primary:hover{
    background-position:100% 50%;transform:translateY(-1px);
    box-shadow:0 14px 28px -12px rgba(106,76,240,.5);
  }
  .btn-primary:active{transform:translateY(0) scale(.985);}
  .btn-ghost{
    background:transparent;border-color:var(--line);color:var(--text-strong);
  }
  .btn-ghost:hover{background:var(--brand-050);border-color:rgba(106,76,240,.4);color:var(--brand-600);}
  .btn-sm{height:40px;padding:0 20px;font-size:14px;}
  .btn-block{width:100%;}
  .link-more{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);
    position:relative;
  }
  .link-more span.underline{
    position:absolute;left:0;bottom:-3px;height:1px;width:0;background:currentColor;
    transition:width .25s var(--ease);
  }
  .link-more:hover{color:var(--teal);}
  .link-more:hover span.underline{width:100%;}
  .link-more .arrow{transition:transform .25s var(--ease);}
  .link-more:hover .arrow{transform:translateX(2px);}

  .nav-toggle{
    display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
    align-items:center;justify-content:center;background:var(--paper-2);
  }
  .nav-toggle span{position:relative;width:18px;height:1.5px;background:var(--text-strong);display:block;border-radius:2px;}
  .nav-toggle span::before,.nav-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--text-strong);border-radius:2px;
  }
  .nav-toggle span::before{top:-6px;}
  .nav-toggle span::after{top:6px;}

  .mobile-panel{
    position:fixed;inset:72px 0 0 0;z-index:55;background:rgba(247,246,252,.98);
    backdrop-filter:blur(10px);padding:28px 24px 40px;
    transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .25s var(--ease),transform .25s var(--ease);
    border-top:1px solid var(--line);
  }
  .mobile-panel.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .mobile-panel a.m-link{
    display:flex;align-items:center;gap:10px;font-size:20px;color:var(--text-strong);
    padding:14px 0;border-bottom:1px solid var(--line);
  }
  .mobile-panel a.m-link.active{color:var(--brand-600);font-weight:600;}
  .mobile-panel a.m-link.active::before{content:"";width:6px;height:6px;border-radius:999px;background:var(--grad-brand);}
  .mobile-panel .btn{margin-top:24px;}

  /* ---------- 通用区块 ---------- */
  .section{padding:64px 0;}
  @media (min-width:1024px){.section{padding:96px 0;}}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
    letter-spacing:.06em;color:var(--brand-600);background:var(--brand-050);
    border-radius:999px;padding:6px 14px;margin-bottom:18px;
  }
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:999px;background:var(--grad-brand);}
  .section-head{max-width:720px;margin-bottom:36px;}
  .section-title{font-size:28px;letter-spacing:-.02em;}
  @media (min-width:1024px){.section-title{font-size:34px;}}
  .section-desc{margin-top:12px;font-size:16px;color:var(--text-muted);line-height:1.85;}

  /* ---------- Hero ---------- */
  .hero{position:relative;overflow:hidden;background:var(--paper);border-bottom:1px solid var(--line);}
  .hero::before{
    content:"";position:absolute;inset:0;
    background-image:radial-gradient(rgba(23,195,178,.55) 1px,transparent 1px);
    background-size:22px 22px;opacity:.12;pointer-events:none;
  }
  .hero::after{
    content:"";position:absolute;inset:0;
    background-image:url("/assets/images/backpic/back-1.webp");
    background-size:cover;background-position:center;opacity:.06;pointer-events:none;
  }
  .hero-inner{position:relative;z-index:2;padding:56px 0 64px;}
  @media (min-width:1024px){.hero-inner{padding:72px 0 88px;}}
  .hero-grid{display:grid;gap:40px;align-items:center;}
  @media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:56px;}}
  .hero-title{
    font-size:30px;line-height:1.22;letter-spacing:-.02em;
  }
  @media (min-width:768px){.hero-title{font-size:40px;}}
  @media (min-width:1024px){.hero-title{font-size:48px;}}
  .hero-sub{margin-top:18px;font-size:16px;line-height:1.85;color:var(--text-muted);max-width:620px;}
  .hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:28px;}
  .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
  .chip{
    display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 14px;border-radius:999px;
    background:var(--paper-2);border:1px solid var(--line);font-size:13px;color:var(--text-muted);
  }
  .chip b{color:var(--text-strong);font-weight:600;}
  .hero-visual{position:relative;}
  .hero-card{
    position:relative;background:var(--paper-2);border:1px solid var(--line);
    border-radius:var(--radius-lg);box-shadow:var(--shadow-card);overflow:hidden;
  }
  .hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
  .hero-card-body{padding:22px 24px 26px;}
  .hero-card-body h2{font-size:18px;}
  .hero-card-body p{margin-top:10px;font-size:14px;color:var(--text-muted);line-height:1.75;}
  .stat-badge{
    position:absolute;left:-12px;bottom:36px;display:flex;align-items:center;gap:12px;
    background:var(--ink-900);border:1px solid rgba(255,255,255,.12);border-radius:16px;
    padding:12px 18px;box-shadow:0 20px 40px -26px rgba(16,12,31,.9);
  }
  .stat-badge .num{font-size:26px;font-weight:700;color:var(--amber);letter-spacing:-.01em;line-height:1;}
  .stat-badge .lbl{font-size:12px;color:rgba(255,255,255,.62);letter-spacing:.02em;}
  @media (max-width:520px){.stat-badge{left:12px;bottom:12px;padding:10px 14px;}}

  /* ---------- 锚点胶囊 ---------- */
  .anchor-bar{
    position:sticky;top:72px;z-index:40;background:rgba(247,246,252,.94);
    backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
    padding:14px 0;
  }
  .anchor-scroll{display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;padding-bottom:2px;}
  .anchor-scroll::-webkit-scrollbar{display:none;}
  .anchor-pill{
    flex:none;display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:999px;
    border:1px solid var(--line);background:var(--paper-2);font-size:14px;color:var(--text);
    transition:all .28s var(--ease);
  }
  .anchor-pill:hover{border-color:rgba(106,76,240,.4);color:var(--brand-600);background:var(--brand-050);}
  .anchor-pill.is-active{
    background-image:var(--grad-brand);border-color:transparent;color:#fff;font-weight:600;
    box-shadow:0 12px 24px -18px rgba(106,76,240,.9);
  }

  /* ---------- 自查清单 ---------- */
  .check-grid{display:grid;gap:20px;}
  @media (min-width:768px){.check-grid{grid-template-columns:repeat(3,1fr);}}
  .check-card{
    background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-md);
    padding:26px 24px;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  }
  .check-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(106,76,240,.24);}
  .check-num{
    width:36px;height:36px;border-radius:12px;display:flex;align-items:center;justify-content:center;
    background:var(--brand-050);color:var(--brand-600);font-weight:700;font-size:15px;
  }
  .check-card h3{margin-top:16px;font-size:18px;}
  .check-card p{margin-top:10px;font-size:15px;color:var(--text-muted);line-height:1.8;}

  /* ---------- 问答手风琴 ---------- */
  .faq-group{margin-bottom:44px;scroll-margin-top:140px;}
  .faq-group:last-child{margin-bottom:0;}
  .faq-group-head{display:flex;align-items:center;gap:14px;margin-bottom:18px;}
  .faq-group-head .dot{width:8px;height:8px;border-radius:999px;background:var(--grad-brand);flex:none;}
  .faq-group-head h2{font-size:22px;letter-spacing:-.01em;}
  .faq-group-head .cnt{font-size:13px;color:var(--text-muted);}
  .faq-item{
    background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-md);
    margin-bottom:12px;overflow:hidden;transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
  }
  .faq-item:hover{border-color:rgba(106,76,240,.26);}
  .faq-item.is-open{box-shadow:var(--shadow-card);border-color:rgba(106,76,240,.3);}
  .faq-q{margin:0;}
  .faq-toggle{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:20px 24px;text-align:left;font-size:17px;font-weight:600;color:var(--text-strong);
    min-height:44px;
  }
  .faq-item.is-open .faq-toggle{color:var(--brand-600);}
  .faq-icon{position:relative;width:18px;height:18px;flex:none;}
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;left:50%;top:50%;background:var(--brand-600);border-radius:2px;
    transition:transform .25s var(--ease),opacity .25s var(--ease);
  }
  .faq-icon::before{width:14px;height:1.5px;transform:translate(-50%,-50%);}
  .faq-icon::after{width:1.5px;height:14px;transform:translate(-50%,-50%);}
  .faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
  .faq-a{max-height:0;opacity:0;overflow:hidden;transition:max-height .28s var(--ease),opacity .25s var(--ease);}
  .faq-a-inner{padding:0 24px 22px;font-size:15px;line-height:1.9;color:var(--text);}
  .faq-a-inner p{margin-bottom:12px;}
  .faq-a-inner p:last-child{margin-bottom:0;}

  /* ---------- 图文指引 ---------- */
  .guide-list{display:grid;gap:20px;}
  @media (min-width:1024px){.guide-list{grid-template-columns:repeat(2,1fr);gap:24px;}}
  .guide-card{
    display:grid;grid-template-columns:132px 1fr;gap:20px;align-items:center;
    background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-md);
    padding:18px;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  }
  .guide-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(106,76,240,.24);}
  .guide-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;}
  .guide-card h3{font-size:18px;}
  .guide-card p{margin-top:8px;font-size:14px;color:var(--text-muted);line-height:1.75;}
  @media (max-width:520px){.guide-card{grid-template-columns:1fr;}}

  /* ---------- 联系支持 ---------- */
  .support-card{
    background:var(--brand-050);border:1px solid rgba(106,76,240,.18);border-radius:var(--radius-lg);
    padding:32px 24px;
  }
  @media (min-width:1024px){
    .support-card{padding:48px;}
    .support-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
  }
  .support-card h2{font-size:28px;letter-spacing:-.02em;}
  .support-points{margin-top:22px;}
  .support-points li{
    display:flex;gap:12px;font-size:15px;color:var(--text);padding:10px 0;
    border-bottom:1px solid rgba(106,76,240,.12);
  }
  .support-points li:last-child{border-bottom:0;}
  .support-points li::before{
    content:"";flex:none;width:6px;height:6px;border-radius:999px;margin-top:11px;background:var(--teal);
  }
  .field{margin-bottom:18px;}
  .field label{display:block;font-size:13px;font-weight:600;color:var(--text-strong);margin-bottom:8px;letter-spacing:.02em;}
  .input,.textarea,.select{
    width:100%;height:46px;padding:0 16px;border-radius:var(--radius-sm);
    background:var(--paper-2);border:1px solid var(--line);color:var(--text-strong);font-size:15px;
    transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
    appearance:none;-webkit-appearance:none;
  }
  .textarea{height:auto;min-height:118px;padding:14px 16px;line-height:1.8;resize:vertical;}
  .select{
    background-image:linear-gradient(45deg,transparent 50%,var(--text-muted) 50%),linear-gradient(135deg,var(--text-muted) 50%,transparent 50%);
    background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;
    background-size:6px 6px,6px 6px;background-repeat:no-repeat;
  }
  .input::placeholder,.textarea::placeholder{color:#A9A5BE;}
  .input:focus,.textarea:focus,.select:focus{
    outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(106,76,240,.14);
  }
  .form-tip{font-size:13px;color:var(--text-muted);margin-top:12px;min-height:20px;}
  .form-tip.is-error{color:#E5484D;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    position:relative;background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 32px;margin-top:8px;
  }
  .site-footer::before{
    content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad-brand);opacity:.75;
  }
  .footer-grid{display:grid;gap:36px;}
  @media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:repeat(4,1fr);gap:40px;}}
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
  .footer-brand .brand-mark{width:38px;height:38px;}
  .footer-brand strong{color:#fff;font-size:17px;font-weight:600;letter-spacing:-.01em;}
  .footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px;}
  .footer-col h3{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
  .footer-col ul li{margin-bottom:10px;}
  .footer-col ul li a{
    position:relative;font-size:14px;color:rgba(255,255,255,.6);padding-left:0;
    transition:color .25s var(--ease),padding-left .25s var(--ease);
  }
  .footer-col ul li a::before{
    content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
    width:6px;height:6px;border-radius:999px;background:var(--teal);opacity:0;transition:opacity .25s var(--ease);
  }
  .footer-col ul li a:hover{color:#fff;padding-left:12px;}
  .footer-col ul li a:hover::before{opacity:1;}
  .footer-form{margin-top:16px;}
  .footer-form label{display:block;font-size:13px;color:rgba(255,255,255,.55);margin-bottom:8px;}
  .footer-input{
    width:100%;height:46px;padding:0 16px;border-radius:var(--radius-sm);
    background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);color:#fff;font-size:15px;
    transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
  }
  .footer-input::placeholder{color:rgba(255,255,255,.4);}
  .footer-input:focus{outline:none;border-color:rgba(106,76,240,.9);box-shadow:0 0 0 3px rgba(106,76,240,.24);}
  .footer-form .btn{margin-top:14px;}
  .footer-bottom{
    margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:rgba(255,255,255,.5);
  }

  /* ---------- 响应式导航 ---------- */
  @media (max-width:1023px){
    .nav-links{display:none;}
    .header-actions .btn{display:none;}
    .nav-toggle{display:flex;}
    .anchor-bar{top:72px;}
  }
  @media (max-width:520px){
    .brand-text em{display:none;}
    .brand-text strong{font-size:15px;}
    .hero-actions{gap:14px;}
    .hero-actions .btn{width:100%;}
    .section{padding:52px 0;}
    .faq-toggle{padding:18px;font-size:16px;}
    .faq-a-inner{padding:0 18px 20px;}
  }