/* ============================================================
   聚合AI 官网 — 与 sub2API 控制台一致的视觉
   令牌来源: frontend/tailwind.config.js
   primary teal #14b8a6/#0d9488 · slate 950/900/800/700 · gray-50
   ============================================================ */

:root{
  --bg:#f9fafb; --surface:#ffffff; --surface2:#f9fafb; --sidebar:#ffffff;
  --border:#e5e7eb; --border2:#d1d5db; --border-soft:#f3f4f6;
  --text:#111827; --muted:#6b7280; --faint:#9ca3af;
  --acc:#0d9488; --acc-h:#0f766e; --acc-bright:#14b8a6;
  --acc-dim:#f0fdfa; --acc-line:#99f6e4;
  --code-bg:#0f172a; --code-tx:#e2e8f0; --code-border:#334155;
  --rowh:#f9fafb;
  --term-bg:#0f172a; --term-tx:#e2e8f0; --term-border:#334155;
  --shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08);
  --shadow-lg:0 10px 15px -3px rgba(16,24,40,.10),0 4px 6px -4px rgba(16,24,40,.06);
  --mono:"JetBrains Mono","Cascadia Code","SF Mono",ui-monospace,Consolas,monospace;
  --sans:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --space-1:6px;--space-2:10px;--space-3:16px;--space-4:24px;--space-5:36px;--space-6:52px;--space-7:72px;
}
html.dark{
  --bg:#020617; --surface:#1e293b; --surface2:#0f172a; --sidebar:#0f172a;
  --border:#334155; --border2:#475569; --border-soft:#1e293b;
  --text:#f8fafc; --muted:#94a3b8; --faint:#64748b;
  --acc:#2dd4bf; --acc-h:#5eead4; --acc-bright:#14b8a6;
  --acc-dim:rgba(45,212,191,.08); --acc-line:rgba(45,212,191,.35);
  --rowh:rgba(45,212,191,.05);
  --shadow:0 1px 2px rgba(0,0,0,.4);
  --shadow-lg:0 10px 15px -3px rgba(0,0,0,.45);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--text);
  font-family:var(--sans);font-size:15px;line-height:1.8;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;transition:background .2s,color .2s;
}
.wrap{max-width:1140px;margin:0 auto;padding:0 22px}
a{color:var(--acc);text-decoration:none}
h1,h2,h3{font-weight:700;letter-spacing:-.015em}
::selection{background:var(--acc-line)}

/* 复古氛围层全部停用 */
.atmosphere,.grain,.scanlines{display:none}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:60;
  border-bottom:1px solid var(--border);
  background:color-mix(in srgb,var(--bg) 86%,transparent);
  backdrop-filter:blur(12px);
}
.nav-in{
  max-width:1140px;margin:0 auto;padding:12px 22px;
  display:flex;align-items:center;gap:14px;
}
.brand{
  display:flex;align-items:center;gap:9px;
  font-size:16.5px;font-weight:700;color:var(--text);letter-spacing:-.01em;
}
.brand img{width:26px;height:26px;border-radius:7px}
.brand em{font-style:normal;color:var(--acc)}
.nav .links{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav .links a{
  font-size:13.5px;color:var(--muted);padding:7px 12px;border-radius:8px;transition:.15s;
}
.nav .links a:hover{color:var(--text);background:var(--rowh);text-decoration:none}
.nav .links a.cta{
  color:#fff;background:linear-gradient(135deg,#14b8a6 0%,#0d9488 100%);
  font-weight:600;padding:8px 15px;margin-left:6px;
}
.nav .links a.cta:hover{filter:brightness(1.06)}
.nav .links a.cta .ar{display:inline-block;transition:transform .15s}
.nav .links a.cta:hover .ar{transform:translateX(3px)}
.theme-btn{
  width:36px;height:36px;border:1px solid var(--border);border-radius:8px;
  background:transparent;color:var(--muted);cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:.15s;
}
.theme-btn:hover{color:var(--acc);border-color:var(--acc-line)}
.theme-btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
html.dark .ic-moon{display:none}
html:not(.dark) .ic-sun{display:none}
.menu-btn{
  display:none;width:36px;height:36px;border:1px solid var(--border);border-radius:8px;
  background:transparent;color:var(--muted);font-size:17px;cursor:pointer;
}
.mobile-menu{
  display:none;flex-direction:column;
  border-bottom:1px solid var(--border);background:var(--sidebar);padding:8px 14px 12px;
}
.mobile-menu a{padding:10px 12px;color:var(--muted);border-radius:8px;font-size:14px}
.mobile-menu a:hover{color:var(--text);background:var(--rowh);text-decoration:none}
.mobile-menu.open{display:flex}
@media(max-width:860px){
  .nav .links{display:none}
  .menu-btn{display:flex;align-items:center;justify-content:center;margin-left:auto}
  .theme-btn{margin-left:0}
}

/* ---------- 浮现动画（JS 钩子，保留） ---------- */
.rv{opacity:0;transform:translateY(14px);transition:opacity .55s ease,transform .55s ease}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.08s}.rv.d2{transition-delay:.16s}.rv.d3{transition-delay:.24s}.rv.d4{transition-delay:.32s}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}}

/* ---------- HERO ---------- */
.hero{padding:calc(var(--space-7) - 14px) 0 var(--space-6);display:grid;grid-template-columns:1.02fr .98fr;gap:var(--space-6);align-items:center}
@media(max-width:960px){.hero{grid-template-columns:1fr;gap:var(--space-5)}}
.status{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  color:var(--acc);background:var(--acc-dim);
  border:1px solid var(--acc-line);border-radius:999px;
  padding:5px 13px;
}
.status i{width:7px;height:7px;border-radius:50%;background:var(--acc-bright);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{font-size:clamp(36px,4.4vw,58px);font-weight:800;margin:var(--space-4) 0 var(--space-3);line-height:1.12}
.hero h1 .hl{
  color:var(--acc);
  background:linear-gradient(135deg,#14b8a6,#0d9488);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
html.dark .hero h1 .hl{background:linear-gradient(135deg,#2dd4bf,#14b8a6);-webkit-background-clip:text;background-clip:text}
.hero .sub{font-size:16px;color:var(--muted);max-width:34em;margin:0 0 var(--space-3)}
.proto-line{font-family:var(--mono);font-size:12.5px;color:var(--faint);margin:0 0 var(--space-4)}
.proto-line b{color:var(--acc);font-weight:600}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin:0 0 var(--space-3)}
.hero-note{font-family:var(--mono);font-size:12px;color:var(--faint)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:600;
  padding:11px 22px;border-radius:10px;transition:.15s;
}
.btn-p{
  color:#fff !important;
  background:linear-gradient(135deg,#14b8a6 0%,#0d9488 100%);
  box-shadow:0 2px 8px rgba(13,148,136,.35);
}
.btn-p:hover{filter:brightness(1.07);text-decoration:none;box-shadow:0 4px 14px rgba(13,148,136,.4)}
.btn-p .ar{display:inline-block;transition:transform .15s}
.btn-p:hover .ar{transform:translateX(3px)}
.btn-s{
  color:var(--text) !important;
  background:var(--surface);border:1px solid var(--border2);
}
.btn-s:hover{border-color:var(--acc-line);color:var(--acc) !important;text-decoration:none}

/* ---------- 活终端（两种主题下均为深色代码卡，同控制台） ---------- */
.term{
  background:var(--term-bg);color:var(--term-tx);
  border:1px solid var(--term-border);border-radius:14px;
  overflow:hidden;box-shadow:var(--shadow-lg);
  font-family:var(--mono);font-size:12.8px;line-height:1.75;
}
.term-bar{
  display:flex;align-items:center;gap:7px;
  padding:10px 14px;border-bottom:1px solid var(--term-border);
  color:#64748b;font-size:11.5px;
}
.term-bar i{width:11px;height:11px;border-radius:50%;background:#334155}
.term-bar i:nth-child(1){background:#f87171}.term-bar i:nth-child(2){background:#fbbf24}.term-bar i:nth-child(3){background:#34d399}
.term-bar .live{margin-left:auto;display:flex;align-items:center;gap:6px;color:#34d399;letter-spacing:.08em}
.term-bar .live i{width:7px;height:7px;background:#34d399;animation:pulse 1.6s infinite}
.term-body{padding:16px 18px;min-height:300px;white-space:pre-wrap;word-break:break-all}
.term-body .p1{color:#5eead4}
.term-body .ok{color:#34d399;font-weight:600}
.term-body .cm{color:#64748b}
.term-body .err{color:#f87171}
.term-cursor{display:inline-block;width:8px;height:15px;background:#5eead4;vertical-align:-2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.term-status{
  display:flex;gap:16px;padding:9px 16px;
  border-top:1px solid var(--term-border);
  color:#64748b;font-size:11.5px;
}
.term-status b{color:#34d399;font-weight:600}

/* ---------- 跑马灯 ---------- */
.marquee{
  overflow:hidden;white-space:nowrap;
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  background:var(--surface);
  padding:13px 0;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
          mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.marquee-track{display:inline-flex;gap:12px;animation:mq 36s linear infinite}
.marquee-track span{
  font-family:var(--mono);font-size:12.5px;color:var(--muted);
  border:1px solid var(--border);border-radius:999px;
  padding:4px 14px;background:var(--surface2);
}
@keyframes mq{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media(prefers-reduced-motion:reduce){.marquee-track{animation:none}}

/* ---------- 区块骨架 ---------- */
.sec{padding-top:var(--space-6)}
.sec-head{display:flex;align-items:baseline;gap:12px;margin:0 0 var(--space-4)}
.sec-head .no{font-family:var(--mono);font-size:13px;color:var(--acc);font-weight:600}
.sec-head h2{font-size:clamp(22px,2.6vw,30px);margin:0}
.sec-head .en{font-family:var(--mono);font-size:11.5px;color:var(--faint);letter-spacing:.08em}

/* ---------- 特性 ---------- */
.feats{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:760px){.feats{grid-template-columns:1fr}}
.feat{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--border);
  border-radius:12px;padding:20px 22px;
  box-shadow:var(--shadow);
  transition:border-color .15s,box-shadow .15s;
}
.feat:hover{border-color:var(--acc-line);box-shadow:var(--shadow-lg)}
.feat>.no{
  font-family:var(--mono);font-size:13px;font-weight:600;color:var(--acc);
  background:var(--acc-dim);border:1px solid var(--acc-line);
  border-radius:8px;padding:3px 9px;margin-top:2px;flex-shrink:0;
}
.feat h3{font-size:16px;margin:0 0 6px}
.feat p{font-size:13.5px;color:var(--muted);margin:0 0 10px}
.tag{
  display:inline-block;font-family:var(--mono);font-size:10.5px;
  letter-spacing:.06em;color:var(--acc);
  background:var(--acc-dim);border:1px solid var(--acc-line);
  border-radius:6px;padding:2px 9px;
}

/* ---------- 双协议代码卡 ---------- */
.protocols{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:860px){.protocols{grid-template-columns:1fr}}
.pcard{
  background:var(--surface);border:1px solid var(--border);
  border-radius:12px;padding:16px;box-shadow:var(--shadow);
}
.pcard .ph{
  display:flex;align-items:baseline;justify-content:space-between;gap:10px;
  margin-bottom:12px;
}
.pcard .ph b{font-size:14.5px}
.pcard .ph span{font-family:var(--mono);font-size:11.5px;color:var(--faint)}
.pcard pre,.codecard pre{
  background:var(--code-bg);color:var(--code-tx);
  border:1px solid var(--code-border);border-radius:10px;
  font-family:var(--mono);font-size:12.3px;line-height:1.75;
  padding:14px 16px;overflow-x:auto;
  box-shadow:none;
}
.pcard pre .u{color:#7dd3fc}
.pcard pre .k{color:#5eead4}
.pcard pre::-webkit-scrollbar,.codecard pre::-webkit-scrollbar{height:7px}
.pcard pre::-webkit-scrollbar-thumb,.codecard pre::-webkit-scrollbar-thumb{background:#2b3648;border-radius:4px}

/* ---------- 三步 ---------- */
.steps{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}
@media(max-width:820px){.steps{grid-template-columns:1fr}}
.step{
  background:var(--surface);border:1px solid var(--border);
  border-radius:12px;padding:20px 22px;box-shadow:var(--shadow);
  transition:border-color .15s,box-shadow .15s;
}
.step:hover{border-color:var(--acc-line);box-shadow:var(--shadow-lg)}
.step h3{font-size:15.5px;margin:0 0 6px}
.step p{font-size:13.5px;color:var(--muted);margin:0 0 12px}
.step .cmd{
  font-family:var(--mono);font-size:12px;color:var(--acc);
  background:var(--acc-dim);border:1px dashed var(--acc-line);
  border-radius:8px;padding:8px 12px;
  overflow-x:auto;white-space:nowrap;
}

/* ---------- 统计 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
  background:var(--surface);border:1px solid var(--border);
  border-radius:12px;padding:22px;box-shadow:var(--shadow);
}
@media(max-width:760px){.stats{grid-template-columns:1fr 1fr}}
.stat{text-align:center}
.stat b{
  display:block;font-size:clamp(26px,3vw,34px);font-weight:800;
  font-family:var(--mono);color:var(--acc);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat span{font-size:12.5px;color:var(--muted)}

/* ---------- 定价表 ---------- */
.ptable{
  background:var(--surface);border:1px solid var(--border);
  border-radius:12px;padding:8px 18px 18px;box-shadow:var(--shadow);
}
.ptable table{width:100%;border-collapse:collapse;font-size:13.5px;margin:8px 0 4px}
.ptable th{
  font-family:var(--sans);font-weight:600;font-size:12.5px;
  color:var(--muted);text-align:left;
  padding:11px 12px;border-bottom:1px solid var(--border);
  white-space:nowrap;
}
.ptable th span{color:var(--faint);font-size:10.5px;font-weight:400}
.ptable td{padding:11px 12px;border-bottom:1px solid var(--border-soft)}
.ptable tbody tr:hover td{background:var(--rowh)}
.ptable .mname{font-family:var(--mono);font-size:13px}
.ptable .num{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--text)}
.ptable .pnote{margin-top:12px;font-size:12.5px;color:var(--faint)}
.ptable .pnote a{color:var(--acc)}

/* ---------- FAQ ---------- */
.faq details{
  background:var(--surface);border:1px solid var(--border);
  border-radius:10px;margin:8px 0;box-shadow:var(--shadow);
}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14.5px;font-weight:600;
  padding:14px 18px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .m{
  position:relative;width:14px;height:14px;flex-shrink:0;
}
.faq summary .m::before,.faq summary .m::after{
  content:"";position:absolute;background:var(--muted);border-radius:2px;
  transition:.15s;
}
.faq summary .m::before{left:0;top:6px;width:14px;height:2px}
.faq summary .m::after{left:6px;top:0;width:2px;height:14px}
.faq details[open] summary{color:var(--acc)}
.faq details[open] summary .m::after{transform:scaleY(0)}
.faq details p{padding:0 18px 16px;font-size:13.5px;color:var(--muted)}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(135deg,#14b8a6 0%,#0d9488 100%);
  border-radius:16px;
  padding:var(--space-5) var(--space-5);
  text-align:center;color:#fff;
  box-shadow:0 8px 24px rgba(13,148,136,.35);
}
.cta-band h2{font-size:clamp(22px,2.8vw,30px);margin:0 0 8px}
.cta-band p{color:rgba(255,255,255,.85);font-size:14.5px;margin:0 0 18px}
.cta-band .btn-p{
  background:#fff;color:#0d9488 !important;box-shadow:none;
}
.cta-band .btn-p:hover{filter:brightness(.96)}
.cta-band .cmd{
  margin:18px auto 0;max-width:640px;
  font-family:var(--mono);font-size:11.5px;color:rgba(255,255,255,.9);
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);
  border-radius:8px;padding:8px 14px;
  overflow-x:auto;white-space:nowrap;
}

/* ---------- 页脚 ---------- */
footer{border-top:1px solid var(--border);margin-top:var(--space-6);padding:22px 0 30px;color:var(--faint);font-size:12.5px}
footer .f-in{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
footer .f-brand{display:flex;align-items:center;gap:8px;color:var(--muted);font-weight:600}
footer .f-brand img{width:20px;height:20px;border-radius:5px}
footer a{color:var(--muted)}
footer a:hover{color:var(--acc)}
footer .qq{font-family:var(--mono)}

@media(max-width:640px){
  .hero h1{font-size:32px}
  .hero .sub{font-size:14.5px}
}