/* 挂单网格s 官网 · 深色量化风 */
:root{
  --bg:#07090d; --panel:#0d1117; --card:#121821; --line:#1f2937;
  --txt:#e5e7eb; --dim:#94a3b8; --label:#64748b;
  --teal:#2dd4bf; --green:#34d399; --red:#f87171; --amber:#f59e0b; --blue:#60a5fa;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--txt);font:16px/1.7 -apple-system,"Segoe UI","Microsoft YaHei",sans-serif}
a{color:inherit;text-decoration:none}
.mono{font-family:ui-monospace,Consolas,"Cascadia Mono",monospace}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
/* 顶部导航 */
header.nav{position:sticky;top:0;z-index:50;background:rgba(9,12,17,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:22px;height:66px}
.brand{font-weight:700;font-size:21px;letter-spacing:.5px}
.badge{display:inline-block;border:1px solid rgba(45,212,191,.5);color:var(--teal);border-radius:999px;padding:2px 10px;font-size:11px;margin-left:10px;vertical-align:middle}
.nav-links{display:flex;gap:26px;margin-left:26px}
.nav-links a{color:var(--dim);font-size:14px}
.nav-links a:hover,.nav-links a.on{color:var(--teal)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:16px;font-size:14px}
.nav-right .login{color:var(--label)}
.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:9px;padding:11px 22px;font-size:15px;font-weight:600;cursor:pointer;border:0;transition:.15s}
.btn.primary{background:rgba(16,60,55,.6);border:1px solid var(--teal);color:var(--teal)}
.btn.primary:hover{background:rgba(45,212,191,.18)}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--dim)}
.btn.ghost:hover{border-color:var(--teal);color:var(--txt)}
.btn.sm{padding:8px 16px;font-size:14px}
/* Hero */
.hero{padding:74px 0 54px;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.tag{display:inline-block;color:var(--green);border:1px solid rgba(52,211,153,.4);border-radius:999px;padding:4px 12px;font-size:12px}
h1{font-size:56px;line-height:1.15;margin:18px 0 10px;letter-spacing:1px}
h1 .accent{color:var(--teal)}
.lead{color:var(--dim);font-size:17px;max-width:560px}
.hero-cta{display:flex;gap:14px;margin:30px 0 16px;flex-wrap:wrap}
.hero-note{color:var(--label);font-size:12px}
/* 卡片 */
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.card h3{margin:0 0 6px;font-size:18px}
.card p{margin:0;color:var(--dim);font-size:14px}
.kpis{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:10px 14px}
.kpi span{display:block;color:var(--label);font-size:12px}
.kpi b{font-family:ui-monospace,Consolas,monospace;font-size:26px;font-weight:600}
.pos{color:var(--green)} .neg{color:var(--red)}
/* 分区 */
.section{padding:56px 0 10px}
.section h2{font-size:30px;margin:0 0 8px}
.section .sub{color:var(--dim);margin:0 0 26px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid2{display:grid;grid-template-columns:1.4fr 1fr;gap:20px;align-items:stretch}
.why h3{font-size:17px;margin:8px 0 4px}
.why .num{width:30px;height:30px;border-radius:8px;background:rgba(45,212,191,.12);color:var(--teal);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.why p{margin:0;color:var(--dim);font-size:14px}
/* 曲线 */
.curve-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px}
.curve-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:6px}
.curve-head b{font-size:16px}
.curve-head span{color:var(--label);font-size:12px}
svg.curve{width:100%;height:auto;display:block}
/* 月度柱 */
.bars{display:flex;align-items:center;gap:8px;height:200px;padding:8px 4px;position:relative}
.bars::before{content:"";position:absolute;left:0;right:0;top:50%;border-top:1px solid #334155}
.bar{flex:1;display:flex;flex-direction:column;justify-content:center;height:100%;position:relative}
.bar i{display:block;border-radius:3px;margin:0 auto;width:60%}
.bar i.up{background:var(--green);align-self:flex-end}
.bar i.down{background:var(--red);align-self:flex-start}
.bar em{position:absolute;bottom:-2px;left:0;right:0;text-align:center;font-style:normal;color:var(--label);font-size:11px}
/* 引用 */
.quote{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px}
.quote .q{font-size:26px;color:var(--teal);line-height:1;margin-bottom:10px}
.quote p{color:var(--txt);font-size:14px;margin:0 0 14px}
.quote span{color:var(--label);font-size:12px}
/* 界面预览 */
.preview{background:#0a0d12;border:1px solid var(--line);border-radius:16px;padding:22px;display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:center}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 16px;max-width:600px}
.panel .ph{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.panel .ph b{font-size:15px}
.panel .ph .st{color:var(--green);font-size:11px;border:1px solid rgba(52,211,153,.4);border-radius:999px;padding:1px 8px}
.panel .acct{color:var(--dim);font-size:12px;margin-bottom:10px}
.panel .pkpis{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.panel .pkpickup{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:8px 10px}
.panel .pkpickup span{display:block;color:var(--label);font-size:10px}
.panel .pkpickup b{font-family:ui-monospace,Consolas,monospace;font-size:17px}
.panel .rowline{color:var(--dim);font-size:12px;margin-top:10px}
.panel .btns{display:flex;gap:8px;margin-top:12px}
.panel .btns span{border:1px solid var(--line);border-radius:7px;padding:6px 14px;font-size:12px;color:var(--dim)}
.panel .btns span.p{color:var(--teal);border-color:var(--teal)}
.preview .side h3{font-size:22px;margin:0 0 12px}
.preview .side li{color:var(--dim);font-size:14px;line-height:2}
/* CTA */
.cta{margin:64px 0;border:1px solid var(--teal);background:linear-gradient(180deg,rgba(14,40,36,.9),rgba(9,16,18,.9));border-radius:16px;padding:30px 34px;display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.cta h2{font-size:28px;margin:0 0 6px}
.cta p{margin:0;color:var(--dim);font-size:14px}
.cta .actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.qr{width:96px;height:96px;border-radius:10px;border:1px dashed var(--line);display:flex;align-items:center;justify-content:center;color:var(--label);font-size:11px;text-align:center;line-height:1.4}
/* FAQ */
.faq{display:grid;gap:12px}
.faq details{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 20px}
.faq summary{cursor:pointer;font-size:16px;font-weight:600;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq details[open]{border-color:rgba(45,212,191,.4)}
.faq p{color:var(--dim);font-size:14px;margin:10px 0 0}
/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:22px}
.step{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.step .no{font-family:ui-monospace,Consolas,monospace;color:var(--teal);font-size:26px}
.step h4{margin:6px 0 4px;font-size:16px}
.step p{color:var(--dim);font-size:13px;margin:0}
/* 风险提示 */
.risk{border:1px solid rgba(245,158,11,.35);background:rgba(60,40,10,.25);border-radius:12px;padding:16px 20px;color:var(--dim);font-size:13px;margin:26px 0}
.risk b{color:var(--amber)}
/* 页脚 */
footer.site{border-top:1px solid var(--line);margin-top:30px;padding:34px 0 40px;color:var(--label);font-size:13px}
footer.site .top{display:flex;gap:60px;flex-wrap:wrap}
footer.site .col b{display:block;color:var(--dim);font-size:13px;margin-bottom:10px}
footer.site .col a{display:block;color:var(--label);font-size:13px;line-height:2}
footer.site .riskline{margin-top:26px;font-size:12px;line-height:1.8}
@media(max-width:900px){
  .hero{grid-template-columns:1fr}
  h1{font-size:40px}
  .grid4,.grid3,.grid2,.steps,.preview{grid-template-columns:1fr}
  .nav-links{display:none}
}

/* ================= 移动端适配 ================= */
.nav-toggle{display:none;background:transparent;border:1px solid var(--line);color:var(--dim);border-radius:8px;padding:6px 10px;font-size:18px;line-height:1;cursor:pointer}
@media(max-width:820px){
  .nav-in{height:auto;flex-wrap:wrap;padding:10px 0;gap:12px}
  .nav-links{display:none;order:3;width:100%;flex-direction:column;gap:0;margin:0;border-top:1px solid var(--line);padding-top:6px}
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 4px;font-size:15px;border-bottom:1px solid rgba(31,41,55,.6)}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;margin-left:auto}
  .nav-right{margin-left:0;gap:10px}
  .nav-right .login{display:none}
  .brand{font-size:19px}
  .badge{margin-left:6px}
}
@media(max-width:900px){
  .wrap{padding:0 18px}
  .hero{padding:40px 0 30px;gap:26px}
  h1{font-size:38px;line-height:1.2}
  .lead{font-size:15px}
  .hero-cta{gap:10px}
  .hero-cta .btn{flex:1 1 46%}
  .section{padding:36px 0 6px}
  .section h2{font-size:24px}
  .section .sub{font-size:14px;margin-bottom:18px}
  .grid4,.grid3,.grid2,.steps,.preview{grid-template-columns:1fr}
  .preview{padding:16px;gap:18px}
  .panel{max-width:100%}
  .panel .pkpis{grid-template-columns:repeat(3,1fr)}
  .curve-card{padding:12px}
  .curve-head{flex-wrap:wrap;gap:4px}
  .bars{height:160px}
  .cta{flex-direction:column;align-items:flex-start;gap:16px;padding:22px}
  .cta h2{font-size:22px}
  .cta .actions{margin-left:0;width:100%;justify-content:space-between}
  .cta .actions .btn{flex:1;margin-right:10px}
  .qr{width:84px;height:84px}
  footer.site{padding:26px 0 30px}
  footer.site .top{gap:26px}
  footer.site .col{flex:1 1 44%}
  .faq details{padding:13px 15px}
  .faq summary{font-size:15px}
  .risk{font-size:12px;padding:13px 15px}
}
@media(max-width:520px){
  h1{font-size:32px}
  .hero-cta .btn{flex:1 1 100%}
  .hero-note{font-size:11px}
  .kpis{grid-template-columns:1fr}
  .panel .pkpis{grid-template-columns:1fr 1fr}
  .quote p{font-size:13px}
  .step{padding:14px 16px}
  .section h2{font-size:22px}
}