/* ============================================================
   APIBase 官网全局样式
   纯静态、无构建：由 nginx / 任意静态服务器直接托管
   品牌色沿用平台 v3「能力积木·拼装」：#7583f1 → #5b6ce8
   ============================================================ */
:root{
  --brand-1:#5b6ce8;
  --brand-2:#7583f1;
  --grad:linear-gradient(135deg,#7583f1,#5b6ce8);
  --ink:#131a2a;
  --muted:#5d6579;
  --line:#e7e9f2;
  --bg:#ffffff;
  --bg-soft:#f6f7fc;
  --ok:#12a594;
  --danger:#e5484d;
  --dark:#0b1024;
  --radius:16px;
  --shadow:0 18px 50px rgba(19,26,42,.09);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}/* 吸顶导航 68px + 余量：锚点/scrollIntoView 不被遮挡 */
body{margin:0;font-family:"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
a:hover{color:var(--brand-1)}
img,svg{vertical-align:middle}
h1,h2,h3,h4{line-height:1.3;margin:0 0 12px}
p{margin:0 0 12px}
::selection{background:rgba(117,131,241,.25)}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px}

.container{max-width:1180px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section.soft{background:var(--bg-soft)}
.section-head{max-width:660px;margin:0 auto 52px;text-align:center}
.kicker{display:inline-block;color:var(--brand-1);background:rgba(91,108,232,.09);border-radius:999px;padding:4px 16px;font-size:13px;font-weight:600;letter-spacing:.04em;margin-bottom:14px}
h2{font-size:34px;letter-spacing:-.01em}
.section-lead{color:var(--muted);font-size:17px;margin:0}

/* ---------------- 按钮 ---------------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:12px;font-weight:600;font-size:15px;padding:11px 24px;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;font-family:inherit;line-height:1.4}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(91,108,232,.35)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 32px rgba(91,108,232,.45)}
.btn-ghost{background:#fff;border-color:#d8dcec;color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand-1);color:var(--brand-1)}
.btn-lg{padding:14px 30px;font-size:16px;border-radius:14px}
.btn-sm{padding:8px 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.btn[disabled]{opacity:.6;cursor:not-allowed;transform:none}

/* ---------------- 顶栏 ---------------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:36px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:-.01em}
.brand:hover{color:inherit}
.brand-sub{font-size:12px;color:var(--muted);font-weight:600;border-left:1px solid #d8dcec;padding-left:10px;letter-spacing:.14em}
.site-nav{margin-left:auto;display:flex;align-items:center;gap:30px;font-size:15px}
.site-nav>a:not(.btn){color:#3c4356;font-weight:500;padding:6px 0;border-bottom:2px solid transparent}
.site-nav>a:not(.btn):hover{color:var(--brand-1)}
.site-nav>a[aria-current="page"]{color:var(--brand-1);border-bottom-color:var(--brand-1)}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:10px;width:44px;height:38px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}

/* ---------------- 首页 Hero ---------------- */
.hero{position:relative;overflow:hidden;color:#fff;background:var(--dark)}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;pointer-events:none}
.hero::before{width:720px;height:720px;left:-220px;top:-260px;background:radial-gradient(closest-side,rgba(91,108,232,.42),transparent 72%)}
.hero::after{width:640px;height:640px;right:-180px;bottom:-300px;background:radial-gradient(closest-side,rgba(139,92,246,.26),transparent 72%)}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center;padding:100px 24px 112px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:6px 16px;font-size:13.5px;color:#c7cffb}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:#8ef0c6;box-shadow:0 0 10px #8ef0c6}
.hero h1{font-size:52px;line-height:1.16;margin:20px 0 18px;letter-spacing:-.015em}
.hero h1 em{font-style:normal;background:linear-gradient(92deg,#a5b4fc,#e0e7ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:17.5px;color:#a7b0d0;max-width:560px;margin:0 0 8px}
.hero-cta{display:flex;gap:14px;margin:28px 0 20px;flex-wrap:wrap}
.hero .btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.28);color:#e6e9ff}
.hero .btn-ghost:hover{border-color:#a5b4fc;color:#a5b4fc}
.hero-points{display:flex;gap:22px;list-style:none;padding:0;margin:0;color:#7f89b3;font-size:13.5px;flex-wrap:wrap}
.hero-points li{display:flex;align-items:center;gap:6px}
.hero-points li::before{content:"✓";color:#8ef0c6;font-weight:700}

/* Hero 产品示意窗（纯 CSS 模拟界面） */
.mock-window{background:linear-gradient(180deg,#161e42,#0e1531);border:1px solid rgba(255,255,255,.13);border-radius:18px;box-shadow:0 40px 90px rgba(0,0,0,.55),0 0 0 6px rgba(255,255,255,.03);overflow:hidden}
.mock-top{display:flex;gap:7px;padding:13px 16px;border-bottom:1px solid rgba(255,255,255,.08)}
.mock-top i{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.16)}
.mock-top i:first-child{background:#f16a5d}
.mock-top i:nth-child(2){background:#f5bf4f}
.mock-top i:nth-child(3){background:#58c26a}
.mock-body{display:grid;grid-template-columns:128px 1fr}
.mock-side{border-right:1px solid rgba(255,255,255,.07);padding:16px 14px;display:flex;flex-direction:column;gap:12px}
.mock-side i{height:9px;border-radius:5px;background:rgba(255,255,255,.12)}
.mock-side i:first-child{background:linear-gradient(90deg,#7583f1,#5b6ce8);width:70%}
.mock-side i:nth-child(2){width:88%}
.mock-side i:nth-child(3){width:60%}
.mock-side i:nth-child(4){width:80%}
.mock-side i:nth-child(5){width:52%}
.mock-main{padding:18px;display:flex;flex-direction:column;gap:14px}
.mock-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.mock-stat{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.07);border-radius:11px;padding:10px 12px}
.mock-stat small{display:block;color:#8b93bd;font-size:11px}
.mock-stat b{font-size:17px;color:#e8ebff}
.mock-stat b.up{color:#6ee7b7}
.mock-chart{display:flex;align-items:flex-end;gap:9px;height:118px;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.06);border-radius:11px;padding:12px}
.mock-chart i{flex:1;border-radius:6px 6px 3px 3px;background:linear-gradient(180deg,#8d99f6,#5b6ce8);opacity:.92}
.mock-chart i:nth-child(even){background:linear-gradient(180deg,#b7a8f7,#8b5cf6)}
.mock-rows{display:flex;flex-direction:column;gap:8px}
.mock-rows i{height:9px;border-radius:5px;background:rgba(255,255,255,.09)}
.mock-rows i:nth-child(1){width:86%}
.mock-rows i:nth-child(2){width:64%}
.mock-rows i:nth-child(3){width:74%}

/* ---------------- 数字条 ---------------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 20px;text-align:center}
.stat b{display:block;font-size:32px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{color:var(--muted);font-size:14px}

/* ---------------- 网格与卡片 ---------------- */
.grid{display:grid;gap:20px}
.cols-2{grid-template-columns:repeat(2,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-4{grid-template-columns:repeat(4,1fr)}
.grid-auto{grid-template-columns:repeat(auto-fill,minmax(330px,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:transform .22s ease,box-shadow .22s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card-icon{width:48px;height:48px;border-radius:13px;display:grid;place-items:center;margin-bottom:16px;background:rgba(91,108,232,.10);color:var(--brand-1)}
.tint-violet{background:rgba(139,92,246,.10);color:#8b5cf6}
.tint-teal{background:rgba(18,165,148,.10);color:#12a594}
.tint-amber{background:rgba(217,119,6,.12);color:#d97706}
.tint-sky{background:rgba(14,165,233,.10);color:#0ea5e9}
.tint-rose{background:rgba(229,72,77,.10);color:#e5484d}
.card h3{font-size:18px;margin-bottom:8px}
.card p{color:var(--muted);font-size:14.5px;margin:0}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chip{font-size:12px;color:#454e66;background:var(--bg-soft);border:1px solid var(--line);padding:3px 11px;border-radius:999px}
.chip.link{color:var(--brand-1);border-color:rgba(91,108,232,.35);background:rgba(91,108,232,.06);font-weight:600}

/* 应用卡片 */
.app-card{display:flex;flex-direction:column}
.app-card ul{margin:12px 0 0;padding-left:0;list-style:none;color:var(--muted);font-size:14px;display:grid;gap:7px}
.app-card ul li{position:relative;padding-left:16px}
.app-card ul li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;background:var(--brand-2);opacity:.55}
.app-card .chips{margin-top:auto;padding-top:18px}

/* ---------------- 套餐卡 ---------------- */
.plan{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px 28px;transition:transform .22s ease,box-shadow .22s ease}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.plan.featured{border:2px solid transparent;background:linear-gradient(#fff,#fff) padding-box,var(--grad) border-box;box-shadow:0 24px 60px rgba(91,108,232,.18)}
.plan-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:12px;font-weight:600;padding:4px 16px;border-radius:999px;white-space:nowrap}
.plan h3{font-size:19px;margin-bottom:2px}
.plan .plan-desc{color:var(--muted);font-size:13.5px;margin:0 0 8px}
.price{font-size:38px;font-weight:800;letter-spacing:-.02em}
.price small{font-size:14px;color:var(--muted);font-weight:500;letter-spacing:0}
.plan-feats{list-style:none;margin:18px 0 26px;padding:18px 0 0;border-top:1px dashed var(--line);display:grid;gap:11px;font-size:14.5px;color:#3d455c}
.plan-feats li{display:flex;gap:9px;align-items:flex-start}
.plan-feats .mk{color:var(--ok);font-weight:700;flex:none}
.plan-feats li.off{color:#a7adbd}
.plan-feats li.off .mk{color:#c3c8d4}
.plan .btn{margin-top:auto}

/* ---------------- 报价表 ---------------- */
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px;background:#fff}
.price-table{width:100%;border-collapse:collapse;min-width:660px}
.price-table th,.price-table td{padding:14px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
.price-table thead th{background:var(--bg-soft);font-size:13px;color:var(--muted);font-weight:600}
.price-table tbody tr:last-child td{border-bottom:none}
.price-table td.num{font-weight:700;white-space:nowrap}
.price-table td .sub{display:block;color:var(--muted);font-size:12.5px;font-weight:400}
.price-notes{margin:22px 0 0;padding:0;list-style:none;display:grid;gap:8px;color:var(--muted);font-size:13.5px}
.price-notes li{position:relative;padding-left:18px}
.price-notes li::before{content:"";position:absolute;left:0;top:8px;width:7px;height:7px;border-radius:50%;background:var(--brand-2);opacity:.4}

/* ---------------- 步骤 ---------------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.step .num{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:50%;background:var(--grad);color:#fff;font-weight:700;margin-bottom:14px}
.step h3{font-size:16.5px;margin-bottom:6px}
.step p{color:var(--muted);font-size:14px;margin:0}
.steps.vertical{grid-template-columns:1fr;gap:14px}
.steps.vertical .step{display:flex;gap:16px;align-items:flex-start;padding:18px 20px}
.steps.vertical .num{margin-bottom:0;flex:none}

/* ---------------- FAQ ---------------- */
.faq{display:grid;gap:14px;max-width:820px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:13px;padding:16px 22px}
.faq details[open]{border-color:rgba(91,108,232,.4)}
.faq summary{font-weight:600;font-size:15.5px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--brand-1);font-size:20px;font-weight:400}
.faq details p{color:var(--muted);font-size:14.5px;margin:12px 0 0}

/* ---------------- CTA 横幅 ---------------- */
.cta-band{background:var(--grad);border-radius:22px;color:#fff;padding:52px 56px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;box-shadow:0 26px 70px rgba(91,108,232,.35)}
.cta-band h2{color:#fff;margin:0 0 8px;font-size:30px}
.cta-band p{color:rgba(255,255,255,.86);margin:0}
.cta-band .btn-white{background:#fff;color:var(--brand-1);border:none}
.cta-band .btn-white:hover{color:#3d4ed6;transform:translateY(-2px)}

/* ---------------- 页脚 ---------------- */
.site-footer{background:var(--dark);color:#8d96b8;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.2fr;gap:40px;padding:60px 0 46px}
.site-footer h4{color:#fff;font-size:15px;margin:0 0 16px}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;font-size:14px}
.site-footer a:hover{color:#c3cbf5}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:19px;margin-bottom:14px}
.footer-desc{font-size:14px;max-width:340px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.09);padding:18px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px}
.footer-bottom a{color:#8d96b8}

/* ---------------- 子页头 ---------------- */
.page-hero{position:relative;overflow:hidden;background:var(--dark);color:#fff;text-align:center;padding:76px 0}
.page-hero::before{content:"";position:absolute;width:560px;height:560px;left:50%;top:-330px;transform:translateX(-50%);background:radial-gradient(closest-side,rgba(91,108,232,.5),transparent 72%)}
.page-hero .container{position:relative;z-index:1}
.page-hero h1{font-size:40px;margin:0 0 12px;letter-spacing:-.01em}
.page-hero p{color:#a7b0d0;max-width:620px;margin:0 auto;font-size:16.5px}

/* ---------------- 表单 ---------------- */
.trial-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:start}
.benefit-list{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:12px;font-size:15px;color:#3d455c}
.benefit-list li{display:flex;gap:10px;align-items:flex-start}
.benefit-list .mk{color:var(--ok);font-weight:700;flex:none}
.form-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px;box-shadow:var(--shadow)}
.form-card h2{font-size:22px}
.form-sub{color:var(--muted);font-size:14px;margin:-4px 0 22px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px}
.field label .opt{color:#98a0b3;font-weight:400}
.field input[type=text],.field input[type=tel],.field textarea{width:100%;padding:11px 14px;border:1px solid #d9deec;border-radius:11px;font:inherit;font-size:15px;background:#fbfcfe;transition:border-color .18s,box-shadow .18s;color:var(--ink)}
.field textarea{resize:vertical;min-height:84px}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand-1);box-shadow:0 0 0 3px rgba(91,108,232,.15);background:#fff}
.field.err input{border-color:var(--danger);box-shadow:0 0 0 3px rgba(229,72,77,.12)}
.err-msg{display:none;color:var(--danger);font-size:12.5px;margin:6px 0 0}
.field.err .err-msg{display:block}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.checks{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.checks label{display:flex;gap:8px;align-items:center;font-weight:500;font-size:13.5px;border:1px solid var(--line);border-radius:11px;padding:10px 12px;cursor:pointer;transition:border-color .15s;margin:0}
.checks label:hover{border-color:var(--brand-1)}
.checks input{accent-color:var(--brand-1);width:15px;height:15px;flex:none;margin:0}
.hp{position:absolute !important;left:-9999px !important;width:1px;height:1px;opacity:0}
.form-error{background:#fdf1f1;border:1px solid #f3cccc;color:var(--danger);border-radius:11px;padding:10px 14px;font-size:13.5px;margin:0 0 16px}
.form-note{font-size:12.5px;color:var(--muted);margin:14px 0 0;text-align:center}
.success-panel{text-align:center;padding:44px 34px}
.ok-ic{width:64px;height:64px;border-radius:50%;background:rgba(18,165,148,.12);color:var(--ok);display:grid;place-items:center;margin:0 auto 18px}
.success-panel h2{font-size:22px}
.success-panel p{color:var(--muted);font-size:14.5px}
.success-panel a{color:var(--brand-1);font-weight:600;word-break:break-all}
.success-account{background:var(--bg-soft);border:1px dashed #d3d9ee;border-radius:11px;padding:10px 16px;font-size:14px;color:#3d455c;font-weight:600}

/* ---------------- 入场动画 ---------------- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s cubic-bezier(.2,.7,.3,1),transform .6s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .card:hover,.plan:hover,.btn:hover{transform:none}
}

/* ---------------- 响应式 ---------------- */
@media (max-width:1020px){
  .hero-grid{grid-template-columns:1fr;padding:72px 24px 84px}
  .hero-visual{display:none}
  .hero h1{font-size:42px}
  .cols-4,.stats,.steps{grid-template-columns:repeat(2,1fr)}
  .trial-layout{grid-template-columns:1fr}
}
@media (max-width:860px){
  .site-nav{position:fixed;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 24px 40px rgba(19,26,42,.08);flex-direction:column;align-items:stretch;gap:4px;padding:14px 24px 20px;display:none;margin-left:0;z-index:70}
  .site-nav.open{display:flex}
  .site-nav>a:not(.btn){padding:11px 4px;border-bottom:none;font-size:16px}
  .site-nav>a[aria-current="page"]{border-bottom:none}
  .site-nav .btn{margin-top:8px}
  .nav-toggle{display:flex}
  .brand-sub{display:none}
}
@media (max-width:720px){
  .section{padding:60px 0}
  h2{font-size:26px}
  .hero h1{font-size:34px}
  .hero-lead{font-size:16px}
  .cols-3,.cols-2{grid-template-columns:1fr}
  .grid-auto{grid-template-columns:1fr}
  .stats,.steps,.cols-4{grid-template-columns:1fr 1fr}
  .field-row,.checks{grid-template-columns:1fr}
  .page-hero{padding:56px 0}
  .page-hero h1{font-size:30px}
  .cta-band{padding:36px 26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .form-card{padding:26px 20px}
  .price{font-size:32px}
}
@media (max-width:460px){
  .stats,.cols-4,.steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}

/* ---------------- 私有化报价区块 ---------------- */
.private-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.price.price-contact{font-size:26px;letter-spacing:0}
.private-ctas{margin-top:auto;display:grid;gap:10px}
.private-ctas .btn{margin-top:0}
@media (max-width:900px){.private-grid{grid-template-columns:1fr}}

/* ---------------- 应用基础授权额度(单价表内) ---------------- */
.price-table .quota{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.price-table .quota .chip{margin:0}

/* ---------------- 双档授权单价表(基础版/高级版) ---------------- */
.price-table.tiers{min-width:1020px}
.price-table.tiers td.plist{font-size:13px;color:#3d455c;line-height:1.55}
.price-table.tiers td.plist span{display:block;padding:1.5px 0}
.price-table.tiers td.num.pro{color:var(--brand-1)}
.price-table.tiers td.mid{text-align:center;color:var(--muted)}