/* ============================================================
   潮生 · 站点公共样式
   多页共用，所有页面只引用本文件，不再内联重复样式
   ============================================================ */
:root{
  --ink:#08202F; --ink2:#28455C; --muted:#6B8497; --line:#E3EDF3; --line2:#EFF5F9;
  --bg:#F7FAFC; --card:#FFFFFF;
  --brand:#0E7490; --brand2:#0891B2; --brand3:#06B6D4; --accent:#14B8A6;
  --brand-bg:#E8F6FA; --grad:linear-gradient(135deg,#082C44 0%,#0E7490 52%,#14B8A6 100%);
  --grad-soft:linear-gradient(135deg,#0E7490,#06B6D4);
  --dark:#061A2A; --dark2:#0A2A40;
  --danger:#DC6B5C; --warn:#B4791A; --ok:#0F8A66;
  --radius:16px; --radius-lg:22px;
  --shadow:0 1px 2px rgba(8,32,47,.04),0 8px 24px -12px rgba(8,32,47,.12);
  --shadow-lg:0 2px 4px rgba(8,32,47,.05),0 24px 60px -24px rgba(8,32,47,.22);
  --max:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
table{border-collapse:collapse;width:100%}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.narrow{max-width:860px;margin:0 auto}

/* ---------- 通用文字 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--brand);background:var(--brand-bg);border:1px solid #CFEAF1;
  padding:6px 14px;border-radius:999px;
}
.eyebrow.on-dark{color:#8FE3F0;background:rgba(143,227,240,.1);border-color:rgba(143,227,240,.25)}
h1,h2.sec,h3{letter-spacing:-.02em}
h2.sec{font-size:clamp(26px,3.4vw,40px);line-height:1.28;font-weight:700;margin:18px 0 14px}
h3.sub{font-size:19px;font-weight:650;letter-spacing:-.01em;margin:44px 0 6px}
.sec-lead{color:var(--muted);font-size:17px;max-width:720px}
.center{text-align:center}
.center .sec-lead{margin-left:auto;margin-right:auto}
section{padding:96px 0}
.tight{padding:64px 0}
.grad-text{background:var(--grad-soft);-webkit-background-clip:text;background-clip:text;color:transparent}
.muted{color:var(--muted)}
.small{font-size:13.5px}

/* ---------- 导航 ---------- */
header{
  position:fixed;top:0;left:0;right:0;z-index:100;transition:.3s;
  background:rgba(247,250,252,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
}
header.scrolled{background:rgba(255,255,255,.92);border-bottom-color:var(--line);box-shadow:0 4px 20px -12px rgba(8,32,47,.2)}
.nav{display:flex;align-items:center;gap:26px;height:70px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--grad);display:grid;place-items:center;box-shadow:0 6px 16px -6px rgba(14,116,144,.6);flex-shrink:0}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.14em;line-height:1.1;display:block}
.brand-sub{font-size:10.5px;color:var(--muted);letter-spacing:.16em;display:block}
.nav-links{display:flex;gap:24px;margin-left:auto}
.nav-links a{font-size:14.5px;color:var(--ink2);font-weight:500;position:relative;padding:4px 0;transition:.2s}
.nav-links a:hover{color:var(--brand)}
.nav-links a.on{color:var(--brand);font-weight:600}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--grad-soft);transition:right .28s;border-radius:2px}
.nav-links a:hover::after,.nav-links a.on::after{right:0}
.nav-cta{display:flex;gap:10px;align-items:center}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:11px;font-size:14.5px;font-weight:600;transition:.22s;white-space:nowrap;
}
.btn.primary{background:var(--grad-soft);color:#fff;box-shadow:0 8px 20px -10px rgba(14,116,144,.9)}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 14px 28px -12px rgba(14,116,144,.95)}
.btn.ghost{border:1px solid var(--line);color:var(--ink2);background:#fff}
.btn.ghost:hover{border-color:var(--brand3);color:var(--brand);background:var(--brand-bg)}
.btn.lg{padding:15px 30px;font-size:16px;border-radius:13px}
.btn.white{background:#fff;color:var(--brand);box-shadow:0 16px 34px -16px rgba(0,0,0,.5)}
.btn.white:hover{transform:translateY(-2px)}
.btn.on-dark{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.28);color:#fff}
.btn.on-dark:hover{background:rgba(255,255,255,.18)}
.btn.wide{width:100%}
.burger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;place-items:center}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff;padding:12px 24px 20px;max-height:calc(100vh - 70px);overflow:auto}
.mobile-menu a{display:block;padding:12px 0;font-size:15px;color:var(--ink2);border-bottom:1px solid var(--line2)}
.mobile-menu a.on{color:var(--brand);font-weight:600}
.mobile-menu .btn{width:100%;margin-top:14px}
@media(max-width:1040px){
  .nav-links,.nav-cta .btn.ghost{display:none}
  .burger{display:grid}
  .mobile-menu.open{display:block}
  .nav-cta{margin-left:auto}
}

/* ---------- 首页 Hero ---------- */
.hero{position:relative;padding:150px 0 0;background:var(--dark);color:#fff;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 460px at 78% 8%,rgba(20,184,166,.30),transparent 62%),
    radial-gradient(760px 420px at 12% 96%,rgba(8,145,178,.30),transparent 62%),
    linear-gradient(160deg,#061A2A 0%,#08283D 45%,#0A3348 100%);
}
.hero-grid{
  position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:54px 54px;
  mask-image:radial-gradient(760px 560px at 60% 22%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(760px 560px at 60% 22%,#000,transparent 78%);
}
.hero .wrap{position:relative;z-index:2}
.hero-inner{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center;padding-bottom:96px}
.hero h1{font-size:clamp(34px,4.7vw,58px);line-height:1.16;font-weight:700;margin:22px 0 20px}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,#5EEAD4,#67E8F9 50%,#7DD3FC);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:17.5px;color:#B9D3E0;max-width:560px}
.hero p.lead b{color:#E6F6FB;font-weight:600}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin:34px 0 22px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:#8FB2C6}
.hero-tags span{display:inline-flex;align-items:center;gap:7px}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(20,184,166,.22);flex-shrink:0}
@media(max-width:960px){
  .hero-inner{grid-template-columns:1fr;gap:40px;padding-bottom:70px}
  .hero{padding-top:120px}
}

/* 首页 Hero 产品界面模拟 */
.shot{position:relative;border-radius:18px;background:linear-gradient(180deg,#0D2E45,#0A2438);border:1px solid rgba(255,255,255,.14);box-shadow:0 40px 90px -34px rgba(0,0,0,.8);overflow:hidden}
.shot-bar{display:flex;align-items:center;gap:8px;padding:11px 14px;border-bottom:1px solid rgba(255,255,255,.09);background:rgba(255,255,255,.03)}
.shot-bar i{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.2);display:block}
.shot-bar i:first-child{background:#F87171}.shot-bar i:nth-child(2){background:#FBBF24}.shot-bar i:nth-child(3){background:#34D399}
.shot-bar span{margin-left:8px;font-size:11.5px;color:#7FA3B8;letter-spacing:.04em}
.shot-body{padding:16px 16px 20px;display:grid;gap:12px}
.shot-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.kpi{background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.09);border-radius:11px;padding:11px 12px}
.kpi .k{font-size:11px;color:#8FB2C6}
.kpi .v{font-size:19px;font-weight:700;color:#fff;margin-top:3px;letter-spacing:-.01em}
.kpi .d{font-size:11px;margin-top:2px}
.up{color:#5EEAD4}.down{color:#FCA5A5}
.shot-chart{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:13px 14px 10px}
.shot-chart h6{font-size:11.5px;color:#9CBBCE;font-weight:500;margin-bottom:9px}
.bars{display:flex;align-items:flex-end;gap:9px;height:74px}
.bars div{flex:1;border-radius:5px 5px 0 0;background:linear-gradient(180deg,#22D3EE,rgba(34,211,238,.25))}
.bars div.dim{background:linear-gradient(180deg,rgba(148,163,184,.7),rgba(148,163,184,.18))}
.shot-rows{display:grid;gap:7px}
.row-i{display:flex;align-items:center;gap:10px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.07);border-radius:10px;padding:9px 12px;font-size:12px;color:#C6DCE8}
.row-i .tag{margin-left:auto;font-size:10.5px;padding:2px 9px;border-radius:999px;background:rgba(20,184,166,.16);color:#5EEAD4;border:1px solid rgba(20,184,166,.3);white-space:nowrap}
.row-i .tag.amber{background:rgba(251,191,36,.14);color:#FCD34D;border-color:rgba(251,191,36,.3)}
.ai-line{display:flex;gap:9px;align-items:flex-start;background:linear-gradient(100deg,rgba(6,182,212,.16),rgba(20,184,166,.08));border:1px solid rgba(34,211,238,.28);border-radius:11px;padding:11px 13px;font-size:12px;color:#D8F3FA}
.ai-line b{color:#7DD3FC}
.float-badge{position:absolute;right:-14px;bottom:44px;background:#fff;color:var(--ink);border-radius:13px;padding:11px 15px;box-shadow:var(--shadow-lg);font-size:12.5px;line-height:1.45;max-width:200px;border:1px solid var(--line)}
.float-badge b{color:var(--brand);display:block;font-size:13px;margin-bottom:2px}
@media(max-width:960px){.float-badge{right:12px;bottom:-18px}}
@media(max-width:560px){.shot-kpis{grid-template-columns:1fr 1fr}}

/* ---------- 子页顶部横幅 ---------- */
.page-hero{position:relative;background:var(--dark);color:#fff;padding:132px 0 66px;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(760px 380px at 84% 4%,rgba(20,184,166,.24),transparent 62%),
             radial-gradient(620px 340px at 4% 96%,rgba(8,145,178,.24),transparent 62%),
             linear-gradient(160deg,#061A2A,#082B41);
}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{font-size:clamp(28px,3.8vw,46px);line-height:1.2;font-weight:700;margin:18px 0 16px}
.page-hero p.lead{color:#B9D3E0;font-size:17px;max-width:760px}
.crumb{display:flex;align-items:center;gap:9px;font-size:13px;color:#7FA3B8;margin-bottom:6px}
.crumb a:hover{color:#67E8F9}
.crumb i{font-style:normal;opacity:.5}
.page-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.page-tabs a{
  font-size:14px;color:#B9D3E0;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.05);
  padding:8px 16px;border-radius:999px;transition:.22s;
}
.page-tabs a:hover{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.35)}
.page-tabs a.on{background:#fff;color:var(--brand);border-color:#fff;font-weight:600}

/* ---------- 指标条 ---------- */
.metrics{background:#fff;border-bottom:1px solid var(--line);padding:0}
.metrics .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:34px 26px;border-right:1px solid var(--line);text-align:center}
.metric:last-child{border-right:none}
.metric .v{font-size:clamp(24px,3vw,34px);font-weight:700;background:var(--grad-soft);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.2}
.metric .k{font-size:13.5px;color:var(--muted);margin-top:6px}
@media(max-width:820px){
  .metrics .wrap{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:none}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
}

/* ---------- 卡片网格 ---------- */
.grid{display:grid;gap:20px;margin-top:52px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:1000px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;transition:.28s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#CFE6EE}
.card .ico{width:42px;height:42px;border-radius:12px;background:var(--brand-bg);color:var(--brand);display:grid;place-items:center;margin-bottom:16px;border:1px solid #D6EDF3;transition:.28s}
.card:hover .ico{background:var(--grad-soft);color:#fff;border-color:transparent}
.card h3{font-size:17px;font-weight:650;margin-bottom:9px}
.card p{font-size:14.5px;color:var(--muted);line-height:1.72}
.card .num{position:absolute;top:18px;right:20px;font-size:13px;font-weight:700;color:#CFE0E9}
.card.pain .ico{background:#FEF3F2;color:var(--danger);border-color:#FBE0DC}
.card.pain:hover .ico{background:var(--danger);color:#fff}
.card.pain .num{color:#F0DCD8}
.card .more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13.5px;font-weight:600;color:var(--brand)}
.card .more:hover{gap:10px}
.card.link{cursor:pointer}

/* ---------- 图文能力行 ---------- */
.rows{margin-top:56px;display:grid;gap:26px}
.frow{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:38px 40px;transition:.28s;
}
.frow:hover{box-shadow:var(--shadow-lg);border-color:#CFE6EE}
.frow.flip .fcol-txt{order:2}
.frow.flip .fcol-vis{order:1}
.frow .fno{font-size:12.5px;font-weight:700;color:var(--brand);letter-spacing:.1em}
.frow h3{font-size:22px;font-weight:650;margin:10px 0 12px}
.frow p{font-size:15px;color:var(--muted);line-height:1.75}
.frow ul{list-style:none;margin-top:16px;display:grid;gap:9px}
.frow li{font-size:14px;color:var(--ink2);display:flex;gap:9px;align-items:flex-start}
.frow li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);margin-top:9px;flex-shrink:0}
.fcol-vis{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:22px;min-height:186px;display:grid;align-content:center;gap:9px}
@media(max-width:900px){
  .frow{grid-template-columns:1fr;gap:24px;padding:28px 24px}
  .frow.flip .fcol-txt,.frow.flip .fcol-vis{order:initial}
}

/* 简易视觉件 */
.viz-row{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 13px;font-size:13px;color:var(--ink2)}
.viz-row .pill{margin-left:auto;font-size:11.5px;padding:2px 9px;border-radius:999px;background:var(--brand-bg);color:var(--brand);border:1px solid #CFEAF1}
.viz-row .pill.ok{background:#E9F8F2;color:var(--ok);border-color:#C6EEDF}
.viz-row .pill.warn{background:#FFF6E6;color:var(--warn);border-color:#FBE3BB}
.viz-row .pill.bad{background:#FEF3F2;color:var(--danger);border-color:#FBE0DC}
.viz-bars{display:flex;align-items:flex-end;gap:9px;height:78px}
.viz-bars div{flex:1;border-radius:5px 5px 0 0;background:linear-gradient(180deg,#22D3EE,rgba(34,211,238,.25))}
.viz-bars div.dim{background:linear-gradient(180deg,#94A3B8,rgba(148,163,184,.22))}

/* ---------- 深色区 ---------- */
.dark{background:var(--dark);color:#fff;position:relative;overflow:hidden}
.dark::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(800px 420px at 82% 6%,rgba(20,184,166,.20),transparent 60%),
             radial-gradient(700px 400px at 6% 92%,rgba(8,145,178,.22),transparent 62%);
}
.dark .wrap{position:relative;z-index:2}
.dark h2.sec{color:#fff}
.dark .sec-lead{color:#9CBBCE}
.pipe{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:56px}
.pipe-col{background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.13);border-radius:var(--radius-lg);padding:26px 22px}
.pipe-col .pid{font-size:11.5px;letter-spacing:.14em;color:#67E8F9;font-weight:700}
.pipe-col h3{font-size:19px;margin:10px 0 14px;font-weight:650}
.pipe-col ul{list-style:none;display:grid;gap:11px}
.pipe-col li{font-size:14px;color:#B5CFDE;display:flex;gap:10px;align-items:flex-start;line-height:1.62}
.pipe-col li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);margin-top:9px;flex-shrink:0}
@media(max-width:900px){.pipe{grid-template-columns:1fr}}
.note-strip{
  margin-top:34px;display:flex;gap:14px;align-items:center;justify-content:center;flex-wrap:wrap;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:16px 22px;
  font-size:14.5px;color:#C6DCE8;text-align:center;
}
.note-strip svg{flex-shrink:0}

/* ---------- 清单 / 政策表 ---------- */
.tax-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:40px;margin-top:48px;align-items:start}
@media(max-width:940px){.tax-grid{grid-template-columns:1fr}}
.checklist{list-style:none;display:grid;gap:16px}
.checklist li{display:flex;gap:13px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;transition:.25s}
.checklist li:hover{border-color:#CFE6EE;box-shadow:var(--shadow)}
.checklist .ci{width:26px;height:26px;border-radius:8px;background:var(--brand-bg);color:var(--brand);display:grid;place-items:center;flex-shrink:0;margin-top:2px}
.checklist b{display:block;font-size:15px;font-weight:650;margin-bottom:3px}
.checklist span{font-size:13.5px;color:var(--muted);line-height:1.65}
.rules{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.rules-head{padding:20px 24px;border-bottom:1px solid var(--line);background:linear-gradient(120deg,#F2FAFC,#fff)}
.rules-head h3{font-size:16.5px;font-weight:650}
.rules-head p{font-size:13px;color:var(--muted);margin-top:4px}
.rules-body{padding:8px 24px 20px}
.rule-row{display:flex;align-items:center;gap:12px;padding:13px 0;border-bottom:1px dashed var(--line2);font-size:14px}
.rule-row:last-child{border-bottom:none}
.rule-row .rn{color:var(--ink2);flex:1}
.rb{font-size:12px;padding:2px 9px;border-radius:999px;font-weight:600;white-space:nowrap}
.low{background:#E9F8F2;color:var(--ok);border:1px solid #C6EEDF}
.mid{background:#FFF6E6;color:var(--warn);border:1px solid #FBE3BB}
.high{background:#FEF3F2;color:var(--danger);border:1px solid #FBE0DC}
.redline{margin-top:26px;background:#FFF8F7;border:1px solid #FBDDD8;border-radius:var(--radius-lg);padding:22px 24px}
.redline h3{font-size:15.5px;color:#B4413A;display:flex;align-items:center;gap:9px;font-weight:650}
.redline p{font-size:13.5px;color:#8A5B56;margin-top:10px;line-height:1.7}
.redline-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.redline-tags span{font-size:12.5px;background:#fff;border:1px solid #F5D3CD;color:#A94C44;padding:4px 11px;border-radius:999px}
.calc-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;margin-top:20px}
.calc-card .cl{font-size:13px;color:var(--muted);margin-bottom:12px}
.calc-bar{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.calc-item{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.calc-item .t{font-size:12.5px;color:var(--muted)}
.calc-item .n{font-size:22px;font-weight:700;margin-top:4px}
.calc-item.a .n{color:var(--warn)}
.calc-item.b .n{color:var(--ok)}
.calc-foot{font-size:12.5px;color:var(--muted);margin-top:14px;line-height:1.65}
@media(max-width:520px){.calc-bar{grid-template-columns:1fr}}

/* ---------- 架构 ---------- */
.arch{display:grid;gap:12px;margin-top:48px}
.layer{display:grid;grid-template-columns:150px 1fr;gap:20px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 24px;transition:.25s}
.layer:hover{border-color:#CFE6EE;box-shadow:var(--shadow)}
.layer .ln{font-size:12px;letter-spacing:.1em;color:var(--brand);font-weight:700}
.layer .ln b{display:block;font-size:15px;letter-spacing:0;color:var(--ink);margin-top:3px;font-weight:650}
.layer .lc{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:13px;background:var(--bg);border:1px solid var(--line);border-radius:9px;padding:6px 12px;color:var(--ink2)}
@media(max-width:700px){.layer{grid-template-columns:1fr;gap:12px}}
.models{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:26px}
@media(max-width:900px){.models{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.models{grid-template-columns:1fr}}
.model{background:#fff;border:1px solid var(--line);border-radius:13px;padding:16px 16px 18px}
.model b{font-size:14.5px;display:block;margin-bottom:5px}
.model span{font-size:12.5px;color:var(--muted);line-height:1.6}
.model code{font-size:11.5px;background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:2px 6px;display:inline-block;margin-top:9px;color:var(--brand);word-break:break-all}

/* ---------- 表格 ---------- */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff;margin-top:28px}
table.tbl{font-size:14px;min-width:620px}
table.tbl th{background:var(--bg);text-align:left;padding:14px 18px;font-weight:650;color:var(--ink);border-bottom:1px solid var(--line);font-size:13.5px;white-space:nowrap}
table.tbl td{padding:14px 18px;border-bottom:1px solid var(--line2);color:var(--ink2);vertical-align:top}
table.tbl tr:last-child td{border-bottom:none}
table.tbl tbody tr:hover{background:#FAFDFE}
table.tbl .yes{color:var(--ok);font-weight:600}
table.tbl .no{color:#B9C9D4}
table.tbl td b{color:var(--ink)}

/* ---------- 方案 ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:52px;align-items:stretch}
@media(max-width:960px){.plans{grid-template-columns:1fr}}
.plan{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px 26px;display:flex;flex-direction:column;transition:.28s;position:relative}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.plan.hot{border-color:var(--brand3);box-shadow:0 0 0 3px rgba(6,182,212,.10),var(--shadow-lg)}
.plan .flag{position:absolute;top:-12px;left:26px;font-size:12px;font-weight:650;color:#fff;background:var(--grad-soft);padding:4px 13px;border-radius:999px}
.plan h3{font-size:19px;font-weight:650}
.plan .sub{font-size:13.5px;color:var(--muted);margin-top:6px;min-height:42px}
.plan .price{font-size:26px;font-weight:700;margin:18px 0 4px}
.plan .price small{font-size:13px;font-weight:500;color:var(--muted)}
.plan hr{border:none;border-top:1px solid var(--line2);margin:20px 0}
.plan ul{list-style:none;display:grid;gap:11px;flex:1}
.plan li{font-size:14px;color:var(--ink2);display:flex;gap:10px;align-items:flex-start;line-height:1.6}
.tick{width:17px;height:17px;border-radius:50%;background:var(--brand-bg);color:var(--brand);display:grid;place-items:center;flex-shrink:0;margin-top:4px}
.plan .btn{margin-top:24px}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:50px}
@media(max-width:900px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px}
.step .sn{width:34px;height:34px;border-radius:10px;background:var(--grad-soft);color:#fff;display:grid;place-items:center;font-size:15px;font-weight:700;margin-bottom:14px;box-shadow:0 8px 18px -10px rgba(14,116,144,.9)}
.step h3{font-size:15.5px;font-weight:650;margin-bottom:7px}
.step p{font-size:13.5px;color:var(--muted);line-height:1.68}

/* ---------- FAQ ---------- */
.faq{margin-top:44px;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff}
.faq details{border-bottom:1px solid var(--line2)}
.faq details:last-child{border-bottom:none}
.faq summary{padding:21px 26px;font-size:15.5px;font-weight:600;cursor:pointer;list-style:none;display:flex;align-items:center;gap:14px;transition:.2s}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{background:var(--bg);color:var(--brand)}
.faq summary .pm{margin-left:auto;width:22px;height:22px;border-radius:6px;background:var(--brand-bg);color:var(--brand);display:grid;place-items:center;font-size:15px;flex-shrink:0;transition:.25s}
.faq details[open] summary{color:var(--brand)}
.faq details[open] summary .pm{transform:rotate(45deg)}
.faq .ans{padding:0 26px 22px;font-size:14.5px;color:var(--muted);line-height:1.78;max-width:940px}

/* ---------- 原则 / 引用 ---------- */
.principles{display:grid;gap:18px;margin-top:48px}
.principle{background:#fff;border:1px solid var(--line);border-left:3px solid var(--brand3);border-radius:0 var(--radius) var(--radius) 0;padding:24px 26px}
.principle h3{font-size:16.5px;font-weight:650;margin-bottom:9px;display:flex;align-items:center;gap:10px}
.principle p{font-size:14.5px;color:var(--muted);line-height:1.78}
.quote{
  background:linear-gradient(120deg,#F2FAFC,#fff);border:1px solid #D6EDF3;border-radius:var(--radius-lg);
  padding:32px 34px;margin-top:44px;
}
.quote p{font-size:19px;line-height:1.68;color:var(--ink);font-weight:500;letter-spacing:-.01em}
.quote .by{margin-top:14px;font-size:13.5px;color:var(--muted)}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:44px}
@media(max-width:820px){.contact-grid{grid-template-columns:1fr}}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 26px}
.contact-card h3{font-size:16.5px;font-weight:650;margin-bottom:8px}
.contact-card p{font-size:14px;color:var(--muted);line-height:1.72}
.kv{margin-top:18px;display:grid;gap:12px}
.kv-row{display:flex;gap:14px;font-size:14px;padding-bottom:12px;border-bottom:1px dashed var(--line2)}
.kv-row:last-child{border-bottom:none;padding-bottom:0}
.kv-row .k{color:var(--muted);min-width:74px;flex-shrink:0}
.kv-row .v{color:var(--ink);font-weight:500;word-break:break-all}

/* ---------- CTA ---------- */
.cta{background:var(--grad);color:#fff;text-align:center;padding:88px 0;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 380px at 50% 0%,rgba(255,255,255,.16),transparent 65%)}
.cta .wrap{position:relative;z-index:2}
.cta h2{font-size:clamp(26px,3.6vw,42px);line-height:1.26;font-weight:700;margin-bottom:16px}
.cta p{color:rgba(255,255,255,.86);font-size:17px;max-width:640px;margin:0 auto 34px}
.cta .btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.cta-note{margin-top:22px;font-size:13px;color:rgba(255,255,255,.7)}

/* ---------- 页脚 ---------- */
footer{background:#04141F;color:#7FA3B8;padding:64px 0 30px;font-size:14px}
.f-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:30px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.09)}
@media(max-width:1000px){.f-top{grid-template-columns:1fr 1fr 1fr}}
@media(max-width:680px){.f-top{grid-template-columns:1fr 1fr}}
@media(max-width:440px){.f-top{grid-template-columns:1fr}}
.f-brand p{margin-top:16px;font-size:13.5px;line-height:1.75;max-width:320px;color:#6D93A9}
.f-col h4{color:#D8E8F0;font-size:14px;font-weight:650;margin-bottom:16px}
.f-col a,.f-col span{display:block;font-size:13.5px;color:#7FA3B8;padding:5px 0;transition:.2s}
.f-col a:hover{color:#67E8F9}
.f-bottom{padding-top:24px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12.5px;color:#5A7E94}
.f-legal{margin-top:22px;font-size:12px;color:#4E6D80;line-height:1.8;max-width:1000px}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}