/* ============================================================
   AI商贸 aishangmao.cn — 设计系统 / 基础样式
   主色：贸易蓝 #0B5FFF   辅色：东盟金 #F5A524   点睛：生态青 #00B8A9
   ============================================================ */
:root{
  --blue:#0B5FFF; --blue-600:#0A4FD6; --blue-050:#EAF1FF; --blue-100:#D6E4FF;
  --gold:#F5A524; --gold-050:#FFF6E6;
  --teal:#00B8A9; --teal-050:#E6FAF8;
  --ink:#0F172A; --ink-2:#1E293B; --muted:#475569; --muted-2:#64748B;
  --line:#E2E8F0; --line-2:#EEF2F7; --bg:#FFFFFF; --bg-soft:#F6F8FC;
  --danger:#E5484D; --success:#12A150;
  --radius:16px; --radius-sm:10px; --radius-lg:24px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06),0 1px 3px rgba(15,23,42,.05);
  --shadow:0 4px 16px rgba(15,23,42,.07);
  --shadow-lg:0 18px 48px rgba(15,23,42,.12);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --maxw:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  font-size:15px;line-height:1.65;-webkit-font-smoothing:antialiased;
  padding-top:72px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}

/* ---------- 布局 ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:64px 0}
.section--soft{background:var(--bg-soft)}
.section--tight{padding:40px 0}
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g5{grid-template-columns:repeat(5,1fr)}
.row{display:flex;align-items:center;gap:12px}
.row--between{justify-content:space-between}
.row--wrap{flex-wrap:wrap}
.spacer{flex:1}

/* ---------- 文本 ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--blue);background:var(--blue-050);padding:5px 12px;border-radius:999px}
.h1{font-size:44px;line-height:1.2}
.h2{font-size:30px}
.h3{font-size:20px}
.h4{font-size:16px}
.lead{font-size:17px;color:var(--muted);line-height:1.75}
.muted{color:var(--muted)}
.small{font-size:13px}
.tiny{font-size:12px}
.center{text-align:center}
.mt8{margin-top:8px}.mt12{margin-top:12px}.mt16{margin-top:16px}.mt24{margin-top:24px}.mt32{margin-top:32px}.mt48{margin-top:48px}
.mb8{margin-bottom:8px}.mb12{margin-bottom:12px}.mb16{margin-bottom:16px}.mb24{margin-bottom:24px}
.gradient-text{background:linear-gradient(92deg,#0B5FFF,#00B8A9);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;
  height:44px;padding:0 20px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:600;transition:background .2s,color .2s,border-color .2s,box-shadow .2s;
  background:var(--blue);color:#fff;white-space:nowrap;
}
.btn:hover{background:var(--blue-600);box-shadow:0 6px 18px rgba(11,95,255,.28)}
.btn:active{transform:translateY(1px)}
.btn--ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{background:var(--bg-soft);border-color:var(--blue);color:var(--blue);box-shadow:var(--shadow-sm)}
.btn--gold{background:var(--gold);color:#3B2600}
.btn--gold:hover{background:#E09110;box-shadow:0 6px 18px rgba(245,165,36,.32)}
.btn--sm{height:36px;padding:0 14px;font-size:13px;border-radius:10px}
.btn--block{width:100%}
.btn--lg{height:52px;padding:0 28px;font-size:16px;border-radius:14px}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.link{color:var(--blue);font-weight:600;cursor:pointer}
.link:hover{text-decoration:underline}

/* ---------- 卡片 ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);transition:border-color .2s,box-shadow .2s,transform .2s}
.card--hover{cursor:pointer}
.card--hover:hover{border-color:var(--blue-100);box-shadow:var(--shadow);transform:translateY(-2px)}
.card__title{font-size:16px;font-weight:700;margin-bottom:6px}
.card__desc{font-size:13.5px;color:var(--muted);line-height:1.7}

/* ---------- 标签 ---------- */
.tag{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;background:var(--bg-soft);color:var(--muted);border:1px solid var(--line)}
.tag--blue{background:var(--blue-050);color:var(--blue);border-color:var(--blue-100)}
.tag--gold{background:var(--gold-050);color:#B06F00;border-color:#FDE8BC}
.tag--teal{background:var(--teal-050);color:#00796E;border-color:#C7F0EB}
.tag--danger{background:#FEEEED;color:var(--danger);border-color:#FBD5D4}
.tag--success{background:#E9F9EF;color:var(--success);border-color:#C6EFD6}

/* ---------- 表单 ---------- */
.field{display:block;margin-bottom:14px}
.field__label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:6px}
.input,.select,.textarea{
  width:100%;height:42px;padding:0 12px;border:1px solid var(--line);border-radius:10px;background:#fff;
  font-size:14px;color:var(--ink);font-family:inherit;transition:border-color .2s,box-shadow .2s;outline:none;
}
.textarea{height:auto;min-height:96px;padding:10px 12px;line-height:1.6;resize:vertical}
.input:focus,.select:focus,.textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(11,95,255,.12)}
.select{appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%2364748B' stroke-width='2'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;padding-right:32px}
.hint{font-size:12px;color:var(--muted-2);margin-top:6px}
.switch{display:inline-flex;align-items:center;gap:8px;cursor:pointer;font-size:14px}

/* ---------- 顶部导航 ---------- */
.topbar{position:fixed;top:0;left:0;right:0;z-index:100;height:72px;background:rgba(255,255,255,.88);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line-2)}
.topbar__inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;height:72px;display:flex;align-items:center;gap:18px}
.logo{display:flex;align-items:center;gap:10px;cursor:pointer}
.logo__mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,#0B5FFF,#00B8A9);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:17px;letter-spacing:-.03em;box-shadow:0 4px 12px rgba(11,95,255,.3);flex:none}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__name{font-size:17px;font-weight:800;letter-spacing:-.01em}
.logo__slogan{font-size:10.5px;color:var(--muted-2);letter-spacing:.02em}
.nav{display:flex;align-items:center;gap:2px;flex:1;min-width:0}
.nav__item{position:relative}
.nav__link{display:block;padding:9px 13px;border-radius:9px;font-size:14.5px;font-weight:500;color:var(--ink-2);white-space:nowrap;transition:background .18s,color .18s}
.nav__link:hover{background:var(--bg-soft);color:var(--blue)}
.nav__link.is-active{color:var(--blue);background:var(--blue-050);font-weight:600}
.nav__trigger{cursor:pointer;display:flex;align-items:center;gap:4px}
.nav__menu{position:absolute;top:100%;left:0;padding-top:8px;min-width:230px;display:none}
.nav__item:hover .nav__menu{display:block}
.nav__panel{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-lg);padding:8px;overflow:hidden}
.nav__panel a{display:block;padding:9px 12px;border-radius:9px;font-size:14px;transition:background .16s}
.nav__panel a:hover{background:var(--bg-soft)}
.nav__panel a b{display:block;font-size:14px;font-weight:600}
.nav__panel a span{display:block;font-size:12px;color:var(--muted-2);margin-top:1px}
.topbar__actions{display:flex;align-items:center;gap:10px;flex:none}
.burger{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;align-items:center;justify-content:center}
.burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.burger span::before{top:-6px}.burger span::after{top:6px}
.mobile-nav{display:none;position:fixed;top:72px;left:0;right:0;bottom:0;z-index:99;background:#fff;padding:16px 20px 40px;overflow-y:auto}
.mobile-nav.is-open{display:block}
.mobile-nav a{display:block;padding:13px 4px;border-bottom:1px solid var(--line-2);font-size:16px;font-weight:600}
.mobile-nav .mobile-nav__sub a{padding-left:18px;font-size:14px;font-weight:500;color:var(--muted)}

/* ---------- 页脚 ---------- */
.footer{background:#0B1220;color:#A9B6CC;padding:52px 0 24px;font-size:13.5px}
.footer h4{color:#fff;font-size:14px;margin-bottom:14px}
.footer a{color:#A9B6CC;display:block;padding:5px 0;transition:color .18s}
.footer a:hover{color:#fff}
.footer__bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:32px;padding-top:20px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:#7A8AA3;font-size:12.5px}
.footer__brand{display:flex;gap:12px;align-items:flex-start}
.footer p{line-height:1.8}

/* ---------- 通用模块 ---------- */
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.stat__num{font-size:26px;font-weight:800;letter-spacing:-.02em}
.stat__label{font-size:12.5px;color:var(--muted);margin-top:2px}
.hero{position:relative;overflow:hidden;background:
  radial-gradient(900px 420px at 8% -10%,#DCE8FF 0%,rgba(220,232,255,0) 60%),
  radial-gradient(760px 380px at 96% 6%,#DFF7F4 0%,rgba(223,247,244,0) 62%),
  linear-gradient(180deg,#F8FAFF 0%,#FFFFFF 100%);border-bottom:1px solid var(--line-2)}
.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;padding:64px 0 56px}
.hero__badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.hero__panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:18px}
.pill-nav{display:flex;gap:8px;flex-wrap:wrap}
.pill{cursor:pointer;border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 15px;font-size:13.5px;font-weight:600;color:var(--muted);transition:all .18s}
.pill:hover{border-color:var(--blue-100);color:var(--blue)}
.pill.is-active{background:var(--blue);border-color:var(--blue);color:#fff}
.marquee{overflow:hidden;position:relative;mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.marquee__track{display:flex;gap:36px;width:max-content;animation:marquee 38s linear infinite}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.step{display:flex;gap:14px}
.step__no{flex:none;width:30px;height:30px;border-radius:9px;background:var(--blue-050);color:var(--blue);font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center}
.table{width:100%;border-collapse:collapse;font-size:14px}
.table th,.table td{padding:11px 12px;border-bottom:1px solid var(--line-2);text-align:left}
.table th{font-size:12.5px;color:var(--muted);font-weight:600;background:var(--bg-soft)}
.table tbody tr:hover{background:#FAFCFF}
.divider{height:1px;background:var(--line-2);margin:24px 0}
.notice{display:flex;gap:10px;padding:12px 14px;border-radius:12px;background:var(--blue-050);border:1px solid var(--blue-100);font-size:13.5px;color:#12409E}
.notice--gold{background:var(--gold-050);border-color:#FDE8BC;color:#8A5A00}
.empty{padding:44px 20px;text-align:center;color:var(--muted-2);font-size:14px}
.skeleton{background:linear-gradient(90deg,#EEF2F7 25%,#F7F9FC 37%,#EEF2F7 63%);background-size:400% 100%;animation:sk 1.4s ease infinite;border-radius:8px;height:14px}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}
.badge-dot{width:7px;height:7px;border-radius:50%;background:var(--success);display:inline-block;box-shadow:0 0 0 3px rgba(18,161,80,.16)}
.progress{height:8px;border-radius:999px;background:var(--line-2);overflow:hidden}
.progress__bar{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--blue),var(--teal));transition:width .6s ease}
.kv{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line-2);font-size:14px}
.kv:last-child{border-bottom:none}
.kv b{font-variant-numeric:tabular-nums}
.avatar{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--blue),var(--teal));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;flex:none}
.toast{position:fixed;left:50%;bottom:36px;transform:translateX(-50%) translateY(20px);opacity:0;pointer-events:none;z-index:300;background:#0F172A;color:#fff;padding:12px 20px;border-radius:12px;font-size:14px;box-shadow:var(--shadow-lg);transition:opacity .25s,transform .25s}
.toast.is-show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- AI 助手浮窗 ---------- */
.ai-dock{position:fixed;right:22px;bottom:22px;z-index:120;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.ai-fab{width:56px;height:56px;border-radius:18px;border:none;cursor:pointer;background:linear-gradient(135deg,#0B5FFF,#00B8A9);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 12px 30px rgba(11,95,255,.36);transition:transform .2s}
.ai-fab:hover{transform:translateY(-2px)}
.ai-fab__pulse{position:absolute;inset:0;border-radius:18px;animation:pulse 2.4s ease-out infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(11,95,255,.35)}70%{box-shadow:0 0 0 14px rgba(11,95,255,0)}100%{box-shadow:0 0 0 0 rgba(11,95,255,0)}}
.ai-panel{width:390px;max-width:calc(100vw - 32px);height:560px;max-height:calc(100vh - 120px);background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-lg);display:none;flex-direction:column;overflow:hidden}
.ai-panel.is-open{display:flex}
.ai-panel__head{padding:14px 16px;border-bottom:1px solid var(--line-2);display:flex;align-items:center;gap:10px;background:linear-gradient(135deg,#0B5FFF,#00B8A9);color:#fff}
.ai-panel__head b{font-size:15px}
.ai-panel__head span{font-size:11.5px;opacity:.85;display:block}
.ai-panel__body{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px;background:#FBFCFE}
.msg{max-width:86%;padding:10px 13px;border-radius:14px;font-size:13.5px;line-height:1.7;white-space:pre-wrap;word-break:break-word}
.msg--ai{align-self:flex-start;background:#fff;border:1px solid var(--line);border-top-left-radius:4px}
.msg--me{align-self:flex-end;background:var(--blue);color:#fff;border-bottom-right-radius:4px}
.msg--card{align-self:flex-start;background:#fff;border:1px solid var(--blue-100);border-radius:14px;padding:12px 14px;max-width:92%;box-shadow:var(--shadow-sm)}
.ai-panel__foot{border-top:1px solid var(--line-2);padding:10px;display:flex;gap:8px;align-items:flex-end;background:#fff}
.ai-panel__foot .input{height:40px;border-radius:12px}
.ai-chips{display:flex;gap:6px;flex-wrap:wrap;padding:0 12px 10px}
.ai-chip{cursor:pointer;font-size:12px;padding:5px 10px;border-radius:999px;border:1px solid var(--blue-100);background:var(--blue-050);color:var(--blue);font-weight:600}
.ai-chip:hover{background:var(--blue-100)}
.typing{display:inline-flex;gap:4px;align-items:center}
.typing i{width:6px;height:6px;border-radius:50%;background:var(--muted-2);animation:tp 1.2s infinite}
.typing i:nth-child(2){animation-delay:.18s}.typing i:nth-child(3){animation-delay:.36s}
@keyframes tp{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-4px);opacity:1}}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){ .nav__link{padding:9px 10px;font-size:14px} .g5{grid-template-columns:repeat(3,1fr)} }
@media (max-width:1024px){
  .h1{font-size:36px}.h2{font-size:26px}
  .hero__grid{grid-template-columns:1fr;gap:28px;padding:44px 0 40px}
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .nav{display:none}
  .burger{display:flex}
  .section{padding:48px 0}
}
@media (max-width:720px){
  body{padding-top:64px}
  .topbar,.topbar__inner{height:64px}
  .mobile-nav{top:64px}
  .wrap{padding:0 16px}
  .h1{font-size:28px}.h2{font-size:22px}.lead{font-size:15.5px}
  .g2,.g3,.g4,.g5{grid-template-columns:1fr}
  .section{padding:36px 0}
  .ai-dock{right:14px;bottom:14px}
  .ai-panel{width:calc(100vw - 28px);height:70vh}
  .logo__slogan{display:none}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}