:root{
  --ink:#0D1220;
  --ink2:#3A4356;
  --muted:#6B7688;
  --brand:#4338CA;
  --brand2:#5B4CE0;
  --mint:#08A47C;
  --amber:#C2410C;
  --amber-soft:#FEF4EC;
  --violet:#7C3AED;
  --violet-soft:#F5F2FF;
  --bg:#F5F6FB;
  --line:#E2E7F2;
  --soft:#EDEFFC;
  --wrap:1180px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.72;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
svg{display:block;max-width:100%}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(245,246,251,.86);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.02em;flex:none}
.logo-mark{width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--mint));display:grid;place-items:center;flex:none}
.logo-mark svg{width:15px;height:15px}
.logo em{font-style:normal;font-weight:600;font-size:11.5px;color:var(--muted);letter-spacing:.06em;margin-left:2px;padding:2px 7px;border:1px solid var(--line);border-radius:999px}
.nav{display:flex;gap:2px;margin-left:auto}
.nav a{padding:8px 13px;border-radius:10px;font-size:14.5px;font-weight:500;color:var(--ink2);transition:.18s;white-space:nowrap}
.nav a:hover{background:var(--soft);color:var(--brand)}
.nav a.on{color:var(--brand);background:var(--soft);font-weight:700}
.nav-cta{
  flex:none;padding:9px 18px;border-radius:11px;font-size:14px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand2));
  box-shadow:0 6px 18px -8px rgba(67,56,202,.9);transition:.2s;
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 12px 24px -10px rgba(67,56,202,.95)}
.nav-toggle{display:none;margin-left:auto;width:40px;height:40px;border-radius:11px;border:1px solid var(--line);background:#fff;font-size:17px;cursor:pointer}
@media(max-width:1060px){
  .nav{position:absolute;top:68px;left:0;right:0;flex-direction:column;gap:2px;background:#fff;border-bottom:1px solid var(--line);padding:12px 20px 18px;display:none}
  .nav.open{display:flex}
  .nav a{padding:11px 12px;font-size:15px}
  .nav-cta{display:none}
  .nav-toggle{display:block}
}

/* ---------- hero ---------- */
.hero{padding:62px 0 14px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:-210px -12% auto auto;width:680px;height:680px;border-radius:50%;
  background:radial-gradient(circle,rgba(67,56,202,.10),transparent 66%);pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:auto auto -170px -15%;width:540px;height:540px;border-radius:50%;
  background:radial-gradient(circle,rgba(8,164,124,.09),transparent 68%);pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;position:relative}
@media(max-width:1000px){.hero-grid{grid-template-columns:1fr;gap:40px}}

.kicker{
  display:inline-flex;align-items:center;gap:9px;margin:0 0 18px;
  font-size:12.5px;font-weight:700;letter-spacing:.05em;color:var(--brand);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 15px;
}
.dot{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(8,164,124,.16);animation:bp 2s infinite}
@keyframes bp{0%,100%{box-shadow:0 0 0 3px rgba(8,164,124,.18)}50%{box-shadow:0 0 0 7px rgba(8,164,124,.05)}}

.hero h1{margin:0 0 20px;font-size:clamp(31px,4.2vw,48px);line-height:1.18;letter-spacing:-.035em;font-weight:860}
.hero h1 .hl{background:linear-gradient(115deg,var(--brand) 8%,var(--mint) 92%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{margin:0 0 26px;font-size:16.4px;color:var(--ink2);max-width:580px}
.hero .lead strong{color:var(--ink);font-weight:700}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 24px;border-radius:13px;font-size:15px;font-weight:700;transition:.2s}
.btn-main{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 30px -14px rgba(67,56,202,.95)}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 20px 36px -16px rgba(67,56,202,1)}
.btn-ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

.chips{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}
.chips a{display:inline-block;padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;color:var(--ink2);background:#fff;border:1px solid var(--line);transition:.18s}
.chips a:hover{color:var(--brand);border-color:rgba(67,56,202,.4);background:var(--soft)}

/* --- hero 右：热门问题速览 --- */
.hot{background:#fff;border:1px solid var(--line);border-radius:24px;padding:26px;box-shadow:0 34px 70px -56px rgba(13,18,32,.9)}
.hot-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.hot-head b{font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--muted);text-transform:uppercase}
.hot-head span{
  font-size:11.5px;font-weight:800;color:var(--mint);
  background:rgba(8,164,124,.09);border:1px solid rgba(8,164,124,.26);
  border-radius:7px;padding:3px 9px;
}
.hot-list{display:grid;gap:10px}
.hot-q{
  display:flex;align-items:center;gap:13px;
  background:linear-gradient(180deg,#fff,#FAFBFF);
  border:1px solid var(--line);border-radius:14px;padding:14px 16px;
  transition:.2s;
}
.hot-q:hover{border-color:rgba(67,56,202,.35);transform:translateX(3px)}
.hot-num{
  flex:none;width:28px;height:28px;border-radius:9px;
  background:var(--soft);color:var(--brand);
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:12px;font-weight:800;display:grid;place-items:center;
}
.hot-q p{margin:0;font-size:14.2px;font-weight:650;color:var(--ink2);line-height:1.5}
.hot-foot{
  margin-top:16px;padding-top:15px;border-top:1px dashed var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.hot-foot em{font-style:normal;font-size:12.3px;color:var(--muted);font-weight:600}
.hot-foot b{
  font-size:12.3px;font-weight:800;letter-spacing:.06em;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--mint));
  border-radius:8px;padding:6px 14px;
}

/* ---------- ticker ---------- */
.ticker{margin:32px 0 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;overflow:hidden}
.ticker-in{display:flex;gap:44px;padding:13px 24px;white-space:nowrap;animation:slide 38s linear infinite;width:max-content}
.ticker span{font-size:13px;font-weight:600;color:var(--muted);display:inline-flex;align-items:center;gap:9px}
.ticker span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint);flex:none}
@keyframes slide{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- sections ---------- */
.sec{padding:76px 0}
.sec-tint{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{margin:0 0 14px;font-size:12px;font-weight:800;letter-spacing:.16em;color:var(--brand);text-transform:uppercase}
.sec-title{margin:0 0 16px;font-size:clamp(25px,3vw,35px);line-height:1.24;letter-spacing:-.028em;font-weight:820}
.sec-lead{margin:0 0 38px;font-size:16px;color:var(--muted);max-width:800px}

/* ---------- 快答条 ---------- */
.quick{display:grid;gap:10px}
.qa-line{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.35fr);gap:26px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:22px 26px;transition:.2s;align-items:start;
}
.qa-line:hover{border-color:rgba(67,56,202,.3);box-shadow:0 18px 36px -28px rgba(13,18,32,.6)}
.qa-q{display:flex;gap:11px;font-size:15.6px;font-weight:780;letter-spacing:-.014em;line-height:1.55}
.qa-q::before{
  content:"Q";flex:none;width:24px;height:24px;border-radius:8px;
  background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;
  font-size:12px;font-weight:850;display:grid;place-items:center;margin-top:2px;
}
.qa-a{font-size:14.4px;color:var(--muted);line-height:1.76}
.qa-a b{color:var(--ink2);font-weight:750}
@media(max-width:820px){.qa-line{grid-template-columns:1fr;gap:12px}}

/* ---------- 分区问答 ---------- */
.zone{display:grid;gap:16px;margin-bottom:52px}
.zone:last-child{margin-bottom:0}
.zone-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.zone-no{
  flex:none;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:12px;font-weight:800;letter-spacing:.1em;
  border-radius:8px;padding:5px 11px;
}
.zone-no.z1{color:var(--brand);background:var(--soft)}
.zone-no.z2{color:var(--mint);background:rgba(8,164,124,.09)}
.zone-no.z3{color:var(--amber);background:var(--amber-soft)}
.zone-no.z4{color:var(--violet);background:var(--violet-soft)}
.zone-no.z5{color:var(--ink2);background:#F2F4F9}
.zone-head h3{margin:0;font-size:21px;font-weight:820;letter-spacing:-.022em}
.zone-head p{margin:0;font-size:14px;color:var(--muted)}

.qa-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media(max-width:860px){.qa-grid{grid-template-columns:1fr}}
.qa{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px 25px;
  transition:.2s;position:relative;overflow:hidden;
}
.qa::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  transform:scaleY(0);transform-origin:top;transition:.3s;
}
.qa.z1::after{background:linear-gradient(180deg,var(--brand),var(--brand2))}
.qa.z2::after{background:linear-gradient(180deg,var(--mint),#0EA372)}
.qa.z3::after{background:linear-gradient(180deg,var(--amber),#EA580C)}
.qa.z4::after{background:linear-gradient(180deg,var(--violet),#8B5CF6)}
.qa.z5::after{background:linear-gradient(180deg,var(--ink2),#64748B)}
.qa:hover{transform:translateY(-3px);border-color:rgba(67,56,202,.28);box-shadow:0 22px 42px -32px rgba(13,18,32,.62)}
.qa:hover::after{transform:scaleY(1)}
.qa h4{margin:0 0 11px;font-size:16.2px;font-weight:800;letter-spacing:-.016em;line-height:1.5;display:flex;gap:10px}
.qa h4::before{
  content:"Q";flex:none;width:22px;height:22px;border-radius:7px;
  background:var(--soft);color:var(--brand);
  font-size:11px;font-weight:850;display:grid;place-items:center;margin-top:3px;
}
.qa p{margin:0 0 10px;font-size:14.3px;color:var(--muted);line-height:1.78}
.qa p:last-child{margin-bottom:0}
.qa p b{color:var(--ink2);font-weight:750}
.qa .tip{
  display:flex;gap:9px;margin-top:12px;padding:11px 14px;
  border-radius:11px;background:#FAFBFF;border:1px dashed var(--line);
  font-size:13.2px;color:var(--ink2);line-height:1.68;
}
.qa .tip::before{content:"→";color:var(--brand);font-weight:900;flex:none}
.qa .tip b{color:var(--ink);font-weight:780}

/* ---------- 术语翻译 ---------- */
.trans{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media(max-width:820px){.trans{grid-template-columns:1fr}}
.tr{
  display:grid;grid-template-columns:150px 1fr;gap:20px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 22px;transition:.2s;
}
.tr:hover{border-color:rgba(67,56,202,.3)}
.tr-k{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:13.2px;font-weight:800;color:var(--brand);
  background:var(--soft);border-radius:9px;padding:7px 12px;text-align:center;
}
.tr-v{font-size:14.3px;color:var(--ink2);line-height:1.7}
.tr-v b{color:var(--ink);font-weight:780}
@media(max-width:560px){.tr{grid-template-columns:1fr;gap:10px}.tr-k{text-align:left}}

/* ---------- 新手动线 ---------- */
.route{display:grid;gap:0}
.rstep{display:grid;grid-template-columns:74px 1fr;gap:24px;padding:26px 0;border-top:1px solid var(--line)}
.rstep:first-child{border-top:0;padding-top:0}
.rstep:last-child{padding-bottom:0}
.rstep-n{
  align-self:start;width:52px;height:52px;border-radius:15px;
  background:linear-gradient(135deg,var(--soft),#fff);
  border:1px solid rgba(67,56,202,.22);
  display:grid;place-items:center;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:17px;font-weight:800;color:var(--brand);
}
.rstep h4{margin:0 0 9px;font-size:18px;font-weight:800;letter-spacing:-.018em}
.rstep p{margin:0;color:var(--ink2);font-size:15.2px}
.rstep p + p{margin-top:9px}
.rstep b{color:var(--ink);font-weight:750}
@media(max-width:640px){.rstep{grid-template-columns:1fr;gap:12px}.rstep-n{width:44px;height:44px;font-size:15px}}

/* ---------- 安全合规 ---------- */
.safe-box{
  background:linear-gradient(135deg,#171B33,#2C2A6B);
  border-radius:22px;padding:38px 40px;color:#fff;
}
.safe-box h3{margin:0 0 16px;font-size:22px;font-weight:820;letter-spacing:-.022em;color:#fff}
.safe-box > p{margin:0 0 22px;font-size:15.2px;color:rgba(255,255,255,.72);line-height:1.78;max-width:760px}
.safe-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:860px){.safe-list{grid-template-columns:1fr}}
.safe-item{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:14px;padding:20px 22px;
}
.safe-item b{display:block;font-size:15.2px;font-weight:800;color:#7FE3C4;margin-bottom:8px}
.safe-item p{margin:0;font-size:13.8px;color:rgba(255,255,255,.7);line-height:1.72}
@media(max-width:600px){.safe-box{padding:28px 24px}}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media(max-width:820px){.faq-grid{grid-template-columns:1fr}}
.faq{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px 26px;transition:.2s}
.faq:hover{border-color:rgba(67,56,202,.3)}
.faq h4{margin:0 0 9px;font-size:16.5px;font-weight:780;letter-spacing:-.012em}
.faq p{margin:0;font-size:14.4px;color:var(--muted)}
.faq a{color:var(--brand);font-weight:700}
.faq a:hover{text-decoration:underline}

/* ---------- 文章 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:920px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.post-grid{grid-template-columns:1fr}}
.post{
  display:flex;flex-direction:column;gap:10px;background:#fff;border:1px solid var(--line);
  border-radius:16px;padding:24px;transition:.22s;
}
.post:hover{transform:translateY(-3px);border-color:rgba(67,56,202,.3);box-shadow:0 22px 40px -30px rgba(13,18,32,.6)}
.post-tag{font-size:11.5px;font-weight:800;letter-spacing:.1em;color:var(--brand);text-transform:uppercase}
.post h3{margin:0;font-size:17px;line-height:1.48;font-weight:780;letter-spacing:-.015em}
.post p{margin:0;font-size:14px;color:var(--muted);flex:1}
.post-meta{font-size:12.5px;color:var(--muted);padding-top:8px;border-top:1px solid var(--line)}
.more-line{margin:34px 0 0;text-align:center}
.more-link{font-weight:750;color:var(--brand);font-size:15px}
.more-link:hover{text-decoration:underline}

/* ---------- footer ---------- */
.site-footer{background:#0D1122;color:rgba(255,255,255,.72);padding:56px 0 30px;margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:34px}
@media(max-width:840px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:540px){.foot-grid{grid-template-columns:1fr}}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:16px;margin-bottom:12px}
.foot-brand .logo-mark{width:26px;height:26px}
.foot-desc{font-size:13.6px;line-height:1.75;color:rgba(255,255,255,.55);max-width:330px}
.foot-h{font-size:12px;font-weight:800;letter-spacing:.14em;color:#fff;margin:0 0 14px}
.foot-list{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.foot-list a{font-size:13.8px;color:rgba(255,255,255,.62);transition:.18s}
.foot-list a:hover{color:#7FE3C4}
.foot-base{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.8px;color:rgba(255,255,255,.42);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .ticker-in{animation:none}
}