/* ===========================================================
   虹桥 AI 网关 · 展示站样式
   浅色极简 SaaS 风格 / 移动端表格自动转卡片
   =========================================================== */

:root{
  --bg:#faf9f6;
  --bg-alt:#f4f2ee;
  --surface:#ffffff;
  --border:#e7e4dd;
  --border-soft:#f0eee9;
  --text:#18181b;
  --text-2:#52525b;
  --muted:#8b8b93;
  --accent:#2b5ce6;
  --accent-ink:#1e40af;
  --accent-soft:#eef2ff;
  --ok:#0f9d58;
  --warn:#c2761a;
  --danger:#d64545;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(24,24,27,.04), 0 8px 24px rgba(24,24,27,.05);
  --wrap:1180px;
  --nav-h:64px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Helvetica,Arial,
              system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
img,svg{display:block;max-width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
.wrap--narrow{max-width:820px}

/* ---------------- 导航 ---------------- */
.nav{
  position:sticky;top:0;z-index:60;
  height:var(--nav-h);
  background:rgba(250,249,246,.82);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--border-soft);
}
.nav__inner{
  max-width:var(--wrap);height:100%;margin:0 auto;padding:0 20px;
  display:flex;align-items:center;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand__mark{
  width:32px;height:32px;border-radius:9px;flex-shrink:0;
  display:grid;place-items:center;color:#fff;background:var(--accent);
}
.brand__mark svg{width:20px;height:20px}
.brand__mark--sm{width:26px;height:26px;border-radius:8px}
.brand__mark--sm svg{width:16px;height:16px}
.brand__text{display:flex;flex-direction:column;line-height:1.2}
.brand__text strong{font-size:15px;letter-spacing:-.01em}
.brand__text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.08em}

.nav__links{display:flex;gap:26px;margin-left:8px}
.nav__links a{font-size:14px;color:var(--text-2);transition:color .15s}
.nav__links a:hover{color:var(--accent)}

.nav__actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.lang{
  display:flex;align-items:center;gap:6px;height:34px;padding:0 12px;
  border:1px solid var(--border);border-radius:999px;background:var(--surface);
  font-size:13px;color:var(--text-2);transition:.15s;
}
.lang:hover{border-color:var(--accent);color:var(--accent)}
.lang svg{width:15px;height:15px}
.nav__burger{display:none;width:34px;height:34px;border-radius:8px;place-items:center}
.nav__burger span{display:block;width:18px;height:1.6px;background:var(--text);margin:3px auto;transition:.2s;border-radius:2px}
.nav__burger[aria-expanded="true"] span:nth-child(1){transform:translateY(4.6px) rotate(45deg)}
.nav__burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav__burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-4.6px) rotate(-45deg)}

/* ---------------- 按钮 ---------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;border-radius:var(--radius-sm);
  font-size:14px;font-weight:600;white-space:nowrap;
  transition:transform .12s, box-shadow .15s, background .15s, border-color .15s;
}
.btn--sm{height:34px;padding:0 14px;font-size:13px}
.btn--lg{height:50px;padding:0 30px;font-size:15px}
.btn--block{width:100%}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 1px 2px rgba(43,92,230,.25)}
.btn--primary:hover{background:var(--accent-ink);box-shadow:0 6px 18px rgba(43,92,230,.22)}
.btn--ghost{background:var(--surface);border:1px solid var(--border);color:var(--text)}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn:active{transform:translateY(1px)}

/* ---------------- Hero ---------------- */
.hero{position:relative;padding:76px 0 60px;overflow:hidden}
.hero__glow{
  position:absolute;inset:-30% 0 auto;height:520px;pointer-events:none;
  background:
    radial-gradient(600px 260px at 22% 42%, rgba(43,92,230,.10), transparent 70%),
    radial-gradient(520px 240px at 78% 30%, rgba(120,160,255,.12), transparent 70%);
}
.hero__inner{position:relative;text-align:center}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;margin-bottom:22px;
  border:1px solid var(--border);border-radius:999px;background:var(--surface);
  font-size:12.5px;color:var(--text-2);
}
.dot{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(15,157,88,.15)}
.hero__title{
  font-size:clamp(30px,5.4vw,54px);font-weight:800;letter-spacing:-.03em;
  background:linear-gradient(180deg,#18181b 40%,#4b5563);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__sub{
  max-width:660px;margin:18px auto 0;font-size:16px;color:var(--text-2);
}
.hero__cta{display:flex;gap:12px;justify-content:center;margin-top:30px;flex-wrap:wrap}
.hero__stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
  max-width:860px;margin:52px auto 0;
}
.hero__stats li{
  padding:18px 10px;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);
}
.hero__stats b{display:block;font-size:24px;letter-spacing:-.02em}
.hero__stats span{font-size:12.5px;color:var(--muted)}
.hero__note{margin-top:12px;font-size:11.5px;color:var(--muted)}

/* ---------------- 通用区块 ---------------- */
.section{padding:76px 0}
.section--alt{background:var(--bg-alt);border-top:1px solid var(--border-soft);border-bottom:1px solid var(--border-soft)}
.section__head{max-width:720px;margin-bottom:32px}
.section__title{font-size:clamp(24px,3.4vw,34px);letter-spacing:-.02em}
.section__sub{margin-top:10px;color:var(--text-2);font-size:15px}

.notice{
  display:flex;gap:10px;align-items:flex-start;
  padding:12px 16px;margin-bottom:22px;
  background:#fffbeb;border:1px solid #fde68a;border-radius:var(--radius-sm);
  font-size:13px;color:#8a5a12;
}
.notice svg{width:18px;height:18px;flex-shrink:0;margin-top:1px}

/* ---------------- 工具栏：分类 + 搜索 ---------------- */
.toolbar{
  display:flex;gap:14px;align-items:center;justify-content:space-between;
  margin-bottom:16px;flex-wrap:wrap;
}
.tabs{display:flex;gap:8px;flex-wrap:wrap}
.tab{
  height:34px;padding:0 14px;border-radius:999px;
  border:1px solid var(--border);background:var(--surface);
  font-size:13px;color:var(--text-2);transition:.15s;
}
.tab:hover{border-color:var(--accent);color:var(--accent)}
.tab.is-active{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.search{
  display:flex;align-items:center;gap:8px;height:36px;padding:0 14px;min-width:240px;
  background:var(--surface);border:1px solid var(--border);border-radius:999px;
}
.search svg{width:16px;height:16px;color:var(--muted);flex-shrink:0}
.search input{flex:1;min-width:0;border:0;background:none;outline:none;font:inherit;font-size:13.5px}

/* ---------------- 价格表 ---------------- */
.table-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;
}
.mtable{width:100%;border-collapse:collapse;font-size:13.5px}
.mtable thead th{
  text-align:left;font-weight:600;font-size:12px;letter-spacing:.02em;
  color:var(--muted);background:#fcfbf9;
  padding:12px 16px;border-bottom:1px solid var(--border);white-space:nowrap;
}
.mtable tbody td{
  padding:14px 16px;border-bottom:1px solid var(--border-soft);vertical-align:middle;
}
.mtable tbody tr:last-child td{border-bottom:0}
.mtable tbody tr:hover{background:#fcfcfb}

.m-model{display:flex;flex-direction:column;gap:4px}
.m-model b{font-weight:600;word-break:break-all}
.m-cell-model,.m-cell-vendor,.m-cell-disc{vertical-align:middle}
.m-model code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:11.5px;color:var(--muted);
}
.m-vendor{display:flex;align-items:center;gap:7px;color:var(--text-2);white-space:nowrap}
.m-vendor i{width:7px;height:7px;border-radius:2px;flex-shrink:0}
.num{font-variant-numeric:tabular-nums;white-space:nowrap}
.num s{color:var(--muted);font-size:11.5px;margin-right:5px;text-decoration-color:var(--muted)}
.badge{
  display:inline-block;padding:2px 8px;border-radius:999px;
  font-size:11.5px;font-weight:600;background:var(--accent-soft);color:var(--accent-ink);
}
.badge--ok{background:#e9f7ef;color:#0b7a45}
.badge--warn{background:#fdf3e3;color:#8a5a12}
.empty{padding:48px 16px;text-align:center;color:var(--muted);font-size:14px}
.table-foot{margin-top:12px;font-size:12px;color:var(--muted)}

/* ---------------- 移动端价格卡片（≤820px 显示，桌面隐藏） ---------------- */
.m-cards{display:none}
.mc{padding:16px;border-bottom:1px solid var(--border-soft)}
.mc:last-child{border-bottom:0}
.mc__head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.mc__head b{font-size:14px;font-weight:600;word-break:break-all}
.mc__vendor{display:flex;align-items:center;gap:7px;margin-top:6px;font-size:12.5px;color:var(--text-2)}
.mc__vendor i{width:7px;height:7px;border-radius:2px;flex-shrink:0}
.mc__tier{margin-top:8px;font-size:12.5px;color:var(--text-2)}
.mc__tier .badge{margin-right:6px}
.mc__grid{display:grid;grid-template-columns:1fr 1fr;gap:8px 18px;margin:12px 0 0}
.mc__grid>div{display:flex;align-items:baseline;justify-content:space-between;gap:8px}
.mc__grid dt{font-size:12px;color:var(--muted)}
.mc__grid dd{margin:0;font-size:13px;font-variant-numeric:tabular-nums;text-align:right;white-space:nowrap}
.mc__tbd{margin-top:12px;font-size:12.5px;color:var(--muted)}

/* ---------------- 卡片网格 ---------------- */
.grid{display:grid;gap:16px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.card{
  position:relative;padding:24px 22px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  transition:transform .18s, box-shadow .18s, border-color .18s;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#d8d4cb}
.card__no{
  display:inline-block;margin-bottom:12px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:11px;font-weight:700;letter-spacing:.12em;color:var(--accent);
}
.card h3{font-size:16px;margin-bottom:8px}
.card p{font-size:13.5px;color:var(--text-2)}

/* ---------------- 步骤 ---------------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:26px}
.steps li{
  padding:22px;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);
}
.steps__no{
  display:grid;place-items:center;width:30px;height:30px;margin-bottom:12px;
  border-radius:9px;background:var(--accent);color:#fff;font-size:14px;font-weight:700;
}
.steps h3{font-size:15.5px;margin-bottom:6px}
.steps p{font-size:13.5px;color:var(--text-2)}

.code{
  background:#1c1c1f;border-radius:var(--radius);overflow:hidden;
  box-shadow:0 10px 30px rgba(0,0,0,.12);
}
.code__bar{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 14px;border-bottom:1px solid rgba(255,255,255,.08);
}
.code__tag{font-size:12px;color:#a1a1aa}
.code__copy{
  font-size:12px;color:#c7d2fe;padding:4px 10px;border-radius:6px;
  background:rgba(255,255,255,.07);transition:.15s;
}
.code__copy:hover{background:rgba(255,255,255,.14);color:#fff}
.code pre{margin:0;padding:18px 16px;overflow-x:auto}
.code code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:12.5px;line-height:1.75;color:#e4e4e7;
}
.code__note{margin-top:10px;font-size:12px;color:var(--muted)}

/* ---------------- 状态 ---------------- */
.status{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.status li,.status__row{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:14px 18px;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);font-size:13.5px;
}
.status__left{display:flex;align-items:center;gap:9px;min-width:0}
.status__left i{width:8px;height:8px;border-radius:50%;flex-shrink:0}
.status__meta{color:var(--muted);font-size:12px;white-space:nowrap}

/* ---------------- FAQ ---------------- */
.faq{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);overflow:hidden}
.faq__item + .faq__item{border-top:1px solid var(--border-soft)}
.faq__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:14.5px;font-weight:600;
}
.faq__q:hover{background:#fcfcfb}
.faq__q i{
  position:relative;width:14px;height:14px;flex-shrink:0;
}
.faq__q i::before,.faq__q i::after{
  content:"";position:absolute;background:var(--muted);border-radius:2px;transition:transform .2s;
}
.faq__q i::before{left:0;top:6px;width:14px;height:1.8px}
.faq__q i::after{left:6px;top:0;width:1.8px;height:14px}
.faq__item.is-open .faq__q i::after{transform:rotate(90deg);opacity:0}
.faq__a{padding:0 20px 18px;font-size:13.5px;color:var(--text-2);display:none}
.faq__item.is-open .faq__a{display:block}

/* ---------------- CTA ---------------- */
.cta{padding:70px 0;background:var(--accent);color:#fff;text-align:center}
.cta__inner{max-width:640px}
.cta h2{font-size:clamp(24px,3.6vw,34px);letter-spacing:-.02em}
.cta p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.86)}
.cta .btn--primary{
  margin-top:26px;background:#fff;color:var(--accent);box-shadow:0 6px 20px rgba(0,0,0,.14);
}
.cta .btn--primary:hover{background:#f5f7ff;box-shadow:0 10px 26px rgba(0,0,0,.18)}

/* ---------------- 页脚 ---------------- */
.footer{background:#191919;color:#d4d4d8;padding:56px 0 26px;font-size:13.5px}
.footer__inner{
  display:grid;grid-template-columns:1.2fr 2.4fr;gap:40px;
  padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer__brand{display:flex;align-items:center;gap:10px}
.footer__brand strong{display:block;font-size:15px;color:#fff}
.footer__brand em{font-style:normal;font-size:11px;color:#8b8b93;letter-spacing:.08em}
.footer__cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.footer__cols h4{margin-bottom:12px;font-size:12px;letter-spacing:.1em;color:#8b8b93;font-weight:600}
.footer__cols a,.footer__cols span{display:block;padding:3px 0;color:#d4d4d8;font-size:13px}
.footer__cols a:hover{color:#fff}
.footer__bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-top:22px;flex-wrap:wrap;
}
.footer__company{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.footer__company span:first-child{font-size:15px;font-weight:700;color:#fff;letter-spacing:.02em}
.footer__companyEn{font-size:12px;color:#8b8b93;letter-spacing:.02em}
.footer__copy{font-size:12px;color:#8b8b93}

/* ---------------- 弹窗 ---------------- */
.modal{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:20px}
.modal[hidden]{display:none}
.modal__mask{position:absolute;inset:0;background:rgba(24,24,27,.45);backdrop-filter:blur(2px)}
.modal__box{
  position:relative;width:100%;max-width:400px;padding:28px;
  background:var(--surface);border-radius:18px;
  box-shadow:0 24px 60px rgba(0,0,0,.24);
  animation:pop .18s ease-out;
}
@keyframes pop{from{opacity:0;transform:translateY(8px) scale(.98)}to{opacity:1;transform:none}}
.modal__x{
  position:absolute;top:14px;right:14px;width:30px;height:30px;
  display:grid;place-items:center;border-radius:8px;color:var(--muted);
}
.modal__x:hover{background:var(--bg-alt);color:var(--text)}
.modal__x svg{width:18px;height:18px}
.modal__title{font-size:19px;margin-bottom:18px}
.modal__alert{
  display:flex;gap:11px;padding:13px 14px;margin-bottom:20px;
  background:#fff5f5;border:1px solid #fecaca;border-radius:var(--radius-sm);
}
.modal__alert svg{width:19px;height:19px;flex-shrink:0;margin-top:1px;color:var(--danger)}
.modal__alert strong{display:block;font-size:13.5px;color:#b91c1c}
.modal__alert span{font-size:12.5px;color:#9f5b5b}

.form{display:flex;flex-direction:column;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field span{font-size:12.5px;color:var(--text-2)}
.field input{
  height:42px;padding:0 13px;border:1px solid var(--border);border-radius:var(--radius-sm);
  background:#fff;font:inherit;font-size:14px;outline:none;transition:.15s;
}
.field input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(43,92,230,.12)}
.field input.is-err{border-color:var(--danger);box-shadow:0 0 0 3px rgba(214,69,69,.1)}
.form__err{
  padding:9px 12px;background:#fff5f5;border:1px solid #fecaca;border-radius:8px;
  font-size:12.5px;color:#b91c1c;
}
.modal__foot{margin-top:16px;text-align:center;font-size:12px;color:var(--muted)}

/* ---------------- Toast ---------------- */
.toast{
  position:fixed;left:50%;bottom:34px;transform:translateX(-50%);z-index:200;
  padding:11px 18px;border-radius:999px;background:#18181b;color:#fff;font-size:13px;
  box-shadow:0 10px 30px rgba(0,0,0,.2);animation:pop .18s ease-out;
}
.toast[hidden]{display:none}

/* ===========================================================
   响应式
   =========================================================== */
@media (max-width:1080px){
  .nav__links{gap:18px}
}

@media (max-width:920px){
  .grid--3,.steps,.status{grid-template-columns:repeat(2,1fr)}
  .hero__stats{grid-template-columns:repeat(2,1fr)}
  .footer__inner{grid-template-columns:1fr;gap:28px}
}

@media (max-width:820px){
  .nav__burger{display:grid}
  .nav__links{
    position:absolute;top:var(--nav-h);left:0;right:0;
    flex-direction:column;gap:0;padding:8px 20px 16px;
    background:var(--surface);border-bottom:1px solid var(--border);
    box-shadow:0 10px 24px rgba(0,0,0,.06);
    display:none;
  }
  .nav__links.is-open{display:flex}
  .nav__links a{padding:12px 0;font-size:15px;border-bottom:1px solid var(--border-soft)}
  .nav__links a:last-child{border-bottom:0}

  /* 表格 → 卡片 */
  .toolbar{flex-direction:column;align-items:stretch}
  .search{min-width:0}
  .mtable{display:none}
  .m-cards{display:block}
}

@media (max-width:640px){
  .section{padding:56px 0}
  .hero{padding:52px 0 44px}
  .hero__stats{gap:10px;margin-top:36px}
  .hero__stats li{padding:14px 8px}
  .hero__stats b{font-size:20px}
  .grid--3,.steps,.status{grid-template-columns:1fr}
  .footer__cols{grid-template-columns:1fr 1fr}
  .btn--lg{width:100%}
  .hero__cta .btn{width:100%}
  .footer__bottom{flex-direction:column;align-items:flex-start;gap:8px}
}