/* ============================================================
   BeautyChain 美链 AI · 美容行业全产业链一站式服务平台
   设计系统 v1.0 — Light Theme
   ============================================================ */

:root{
  /* 主色 */
  --rose:#D6486F;
  --rose-600:#BE3A60;
  --rose-50:#FFF1F5;
  --plum:#6D2E4E;

  /* AI 科技色 */
  --violet:#7C4DFF;
  --violet-50:#F4F0FF;
  --cyan:#0FA8BD;
  --cyan-50:#EAF9FC;

  /* 辅色 */
  --gold:#C9A063;
  --gold-50:#FBF6EC;
  --mint:#12A594;
  --mint-50:#E8F8F5;
  --warn:#E4761B;
  --danger:#DC2F45;

  /* 中性 */
  --ink:#16111F;
  --ink-2:#3E3550;
  --sub:#6B6376;
  --sub-2:#9A92A5;
  --line:#EEE6EC;
  --line-2:#E2D8E1;
  --bg:#FFFFFF;
  --surface:#FFF9FB;
  --surface-2:#FBF7FD;

  /* 尺寸 */
  --maxw:1240px;
  --radius:16px;
  --radius-sm:10px;
  --header-h:66px;

  --shadow-sm:0 1px 2px rgba(22,17,31,.04), 0 2px 8px rgba(22,17,31,.04);
  --shadow:0 2px 6px rgba(22,17,31,.05), 0 10px 30px rgba(22,17,31,.06);
  --shadow-lg:0 8px 20px rgba(22,17,31,.07), 0 24px 60px rgba(22,17,31,.09);

  --grad-ai:linear-gradient(135deg,#7C4DFF 0%,#D6486F 100%);
  --grad-rose:linear-gradient(135deg,#D6486F 0%,#C9A063 100%);
  --grad-cool:linear-gradient(135deg,#0FA8BD 0%,#7C4DFF 100%);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  font-size:15px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.35}
p{margin:0}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.row{display:flex;align-items:center}
.row.between{justify-content:space-between}
.row.wrap{flex-wrap:wrap}
.row.top{align-items:flex-start}
.gap8{gap:8px}.gap12{gap:12px}.gap16{gap:16px}.gap24{gap:24px}
.grow{flex:1}
.tc{text-align:center}

/* ---------- Header ---------- */
.hd{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.hd-in{height:var(--header-h);display:flex;align-items:center;gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.02em}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--grad-ai);
  display:grid;place-items:center;color:#fff;font-size:16px;font-weight:800;
  box-shadow:0 4px 12px rgba(124,77,255,.28);
}
.logo small{display:block;font-size:10px;font-weight:500;color:var(--sub);letter-spacing:.14em;line-height:1}

.nav{display:flex;align-items:center;gap:4px}
.nav a{
  padding:8px 12px;border-radius:9px;font-size:14.5px;color:var(--ink-2);font-weight:500;
  transition:.18s;white-space:nowrap;
}
.nav a:hover{background:var(--surface);color:var(--rose)}
.nav a.on{background:var(--rose-50);color:var(--rose);font-weight:600}

.hd-cta{display:flex;align-items:center;gap:10px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:9px 18px;border-radius:10px;font-weight:600;font-size:14.5px;
  border:1px solid transparent;cursor:pointer;transition:.18s;white-space:nowrap;
}
.btn-pri{background:var(--grad-ai);color:#fff;box-shadow:0 4px 14px rgba(124,77,255,.26)}
.btn-pri:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(124,77,255,.34)}
.btn-rose{background:var(--rose);color:#fff;box-shadow:0 4px 14px rgba(214,72,111,.24)}
.btn-rose:hover{background:var(--rose-600);transform:translateY(-1px)}
.btn-out{border-color:var(--line-2);background:#fff;color:var(--ink-2)}
.btn-out:hover{border-color:var(--rose);color:var(--rose)}
.btn-ghost{background:transparent;color:var(--sub)}
.btn-ghost:hover{background:var(--surface)}
.btn-sm{padding:6px 13px;font-size:13.5px;border-radius:8px}
.btn-lg{padding:12px 26px;font-size:15.5px;border-radius:12px}
.btn-block{width:100%}

/* ---------- Section ---------- */
.sec{padding:72px 0}
.sec-sm{padding:44px 0}
.sec-tint{background:var(--surface)}
.sec-tint2{background:var(--surface-2)}
.sec-head{margin-bottom:38px}
.sec-head.center{text-align:center;max-width:720px;margin-inline:auto}
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;padding:5px 13px;border-radius:999px;
  background:var(--violet-50);color:var(--violet);font-size:12.5px;font-weight:600;letter-spacing:.02em;
  border:1px solid rgba(124,77,255,.14);
}
.eyebrow.rose{background:var(--rose-50);color:var(--rose);border-color:rgba(214,72,111,.14)}
.eyebrow.mint{background:var(--mint-50);color:var(--mint);border-color:rgba(18,165,148,.16)}
.eyebrow.gold{background:var(--gold-50);color:#9A7526;border-color:rgba(201,160,99,.2)}
.sec-title{font-size:clamp(24px,3.4vw,36px);margin:14px 0 12px}
.sec-desc{color:var(--sub);font-size:15.5px;max-width:680px}
.sec-head.center .sec-desc{margin-inline:auto}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(1000px 480px at 82% -8%, rgba(214,72,111,.14), transparent 60%),
    radial-gradient(820px 420px at 8% 6%, rgba(124,77,255,.14), transparent 62%),
    linear-gradient(180deg,#FFFDFE 0%, var(--surface) 100%);
  padding:78px 0 64px;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.4;
  background-image:linear-gradient(rgba(214,72,111,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(214,72,111,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(70% 60% at 50% 30%,#000,transparent);
  -webkit-mask-image:radial-gradient(70% 60% at 50% 30%,#000,transparent);
}
.hero-in{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(30px,4.6vw,50px);line-height:1.22;margin:18px 0 18px}
.hero h1 .hl{
  background:linear-gradient(120deg,#D6486F 10%,#7C4DFF 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:16.5px;color:var(--ink-2);max-width:560px}
.hero-actions{display:flex;gap:12px;margin:28px 0 22px;flex-wrap:wrap}
.hero-stats{display:flex;gap:32px;flex-wrap:wrap;padding-top:22px;border-top:1px dashed var(--line-2)}
.hs b{display:block;font-size:26px;font-weight:800;letter-spacing:-.02em;color:var(--plum)}
.hs span{font-size:12.5px;color:var(--sub)}

/* 浮动 AI 卡片 */
.hero-card-wrap{position:relative;min-height:430px}
.fcard{
  position:absolute;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:16px;
}
.fc-1{top:0;right:0;left:8%;padding:18px}
.fc-2{bottom:44px;left:0;width:212px}
.fc-3{bottom:0;right:0;width:196px}
.fc-head{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:700;margin-bottom:12px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 3px rgba(18,165,148,.14)}
.bar-row{display:flex;align-items:center;gap:10px;margin-bottom:9px}
.bar-row span{width:62px;font-size:12.5px;color:var(--sub);flex:none}
.bar{flex:1;height:7px;border-radius:99px;background:var(--surface);overflow:hidden}
.bar i{display:block;height:100%;border-radius:99px;background:var(--grad-ai)}
.bar.g i{background:linear-gradient(90deg,#12A594,#5FD0B8)}
.bar.r i{background:linear-gradient(90deg,#E4761B,#F3B45C)}
.bar-val{width:30px;text-align:right;font-size:12.5px;font-weight:700;flex:none}
.mini-stat{display:flex;align-items:baseline;gap:6px}
.mini-stat b{font-size:22px;font-weight:800}
.mini-stat em{font-style:normal;font-size:12px;color:var(--mint);font-weight:600}
.fc-2 .taglist{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.tag-el{border:1px solid var(--line-2);border-radius:7px;padding:3px 8px;font-size:11.5px;color:var(--sub)}

/* ---------- Card 通用 ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);transition:.22s;
}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.card-pad{padding:22px}

.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)}
.g6{grid-template-columns:repeat(6,1fr)}

/* ---------- 能力卡 ---------- */
.cap{
  padding:24px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);
  position:relative;overflow:hidden;transition:.22s;
}
.cap:hover{border-color:rgba(124,77,255,.32);box-shadow:var(--shadow);transform:translateY(-3px)}
.cap-ico{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
  font-size:21px;margin-bottom:14px;
}
.cap h3{font-size:17px;margin-bottom:8px}
.cap p{color:var(--sub);font-size:14px;line-height:1.65}
.cap .more{margin-top:14px;font-size:13.5px;color:var(--rose);font-weight:600;display:inline-flex;gap:4px;align-items:center}
.cap .more:hover{gap:8px}
.cap-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.tag-ai{
  font-size:11.5px;padding:3px 9px;border-radius:99px;background:var(--violet-50);
  color:var(--violet);border:1px solid rgba(124,77,255,.16);font-weight:600;
}

/* ---------- 产业链 ---------- */
.chain{
  display:grid;grid-template-columns:repeat(6,1fr);gap:12px;align-items:stretch;
}
.chain-node{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 14px;
  text-align:center;transition:.2s;position:relative;
}
.chain-node:hover{border-color:var(--rose);box-shadow:var(--shadow)}
.chain-node .cn-i{font-size:24px;margin-bottom:8px}
.chain-node b{display:block;font-size:14.5px;margin-bottom:4px}
.chain-node span{font-size:12.5px;color:var(--sub);line-height:1.5;display:block}
.chain-node .cn-n{
  position:absolute;top:-9px;left:50%;transform:translateX(-50%);
  width:22px;height:22px;border-radius:50%;background:var(--grad-ai);color:#fff;
  font-size:11.5px;font-weight:700;display:grid;place-items:center;box-shadow:0 2px 8px rgba(124,77,255,.3);
}

/* ---------- 数据表 ---------- */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.tbl{width:100%;border-collapse:collapse;font-size:14px;min-width:640px}
table.tbl th{
  background:var(--surface);text-align:left;padding:13px 16px;font-weight:700;
  color:var(--ink-2);font-size:13px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.tbl td{padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink-2)}
table.tbl tr:last-child td{border-bottom:0}
table.tbl tr:hover td{background:var(--surface)}
.pill{
  display:inline-block;padding:2px 9px;border-radius:99px;font-size:11.5px;font-weight:600;white-space:nowrap;
}
.pill.ok{background:var(--mint-50);color:var(--mint)}
.pill.warn{background:#FFF4E8;color:var(--warn)}
.pill.bad{background:#FFEDF0;color:var(--danger)}
.pill.ai{background:var(--violet-50);color:var(--violet)}
.pill.gold{background:var(--gold-50);color:#9A7526}

/* ---------- 对比条 ---------- */
.cmp{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.cmp-box{border-radius:var(--radius);padding:22px;border:1px solid var(--line)}
.cmp-bad{background:#FFF7F8;border-color:rgba(220,47,69,.16)}
.cmp-good{background:#F4FDFB;border-color:rgba(18,165,148,.2)}
.cmp-box h4{display:flex;align-items:center;gap:8px;font-size:15.5px;margin-bottom:14px}
.cmp-box li{display:flex;gap:9px;padding:7px 0;font-size:14px;color:var(--ink-2);line-height:1.6}
.cmp-box li i{font-style:normal;flex:none;font-weight:700}

/* ---------- 商品/商家卡 ---------- */
.p-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:.22s;display:flex;flex-direction:column}
.p-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.p-img{aspect-ratio:4/3;display:grid;place-items:center;font-size:42px;background:linear-gradient(135deg,var(--rose-50),var(--violet-50));position:relative}
.p-img .badge{position:absolute;top:10px;left:10px}
.p-badge{
  background:rgba(255,255,255,.94);border:1px solid rgba(214,72,111,.2);color:var(--rose);
  font-size:11px;font-weight:700;padding:2px 8px;border-radius:99px;backdrop-filter:blur(4px);
}
.p-body{padding:14px 16px 16px;flex:1;display:flex;flex-direction:column}
.p-title{font-size:15px;font-weight:700;line-height:1.45;margin-bottom:6px}
.p-meta{font-size:12.5px;color:var(--sub);margin-bottom:10px}
.p-price{display:flex;align-items:baseline;gap:6px;margin-top:auto}
.p-price b{font-size:19px;color:var(--rose);font-weight:800}
.p-price del{font-size:12.5px;color:var(--sub-2)}
.p-foot{display:flex;gap:8px;margin-top:12px}

/* ---------- 筛选 ---------- */
.filters{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:22px}
.chip{
  padding:6px 14px;border-radius:99px;border:1px solid var(--line-2);background:#fff;
  font-size:13.5px;color:var(--ink-2);cursor:pointer;transition:.18s;white-space:nowrap;
}
.chip:hover{border-color:var(--rose);color:var(--rose)}
.chip.on{background:var(--rose);border-color:var(--rose);color:#fff;font-weight:600}
.sfield{position:relative;flex:1;min-width:200px}
.sfield input{
  width:100%;padding:9px 14px 9px 36px;border:1px solid var(--line-2);border-radius:10px;
  outline:none;transition:.18s;background:#fff;
}
.sfield input:focus{border-color:var(--violet);box-shadow:0 0 0 3px rgba(124,77,255,.1)}
.sfield::before{content:"⌕";position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--sub-2);font-size:16px}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:s}
.step{position:relative;padding-top:16px}
.step::before{
  counter-increment:s;content:counter(s,decimal-leading-zero);
  display:block;font-size:12px;font-weight:800;color:var(--rose);letter-spacing:.1em;margin-bottom:8px;
}
.step h4{font-size:15.5px;margin-bottom:6px}
.step p{font-size:13.5px;color:var(--sub);line-height:1.6}

/* ---------- 定价 ---------- */
.plan{
  border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;background:#fff;
  display:flex;flex-direction:column;transition:.22s;position:relative;overflow:hidden;
}
.plan:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.plan.hot{border-color:var(--rose);box-shadow:0 8px 30px rgba(214,72,111,.14)}
.plan-hot-tag{
  position:absolute;top:14px;right:-34px;transform:rotate(38deg);
  background:var(--grad-rose);color:#fff;font-size:11.5px;font-weight:700;padding:3px 40px;
}
.plan h3{font-size:17px}
.plan .who{font-size:13px;color:var(--sub);margin-bottom:16px}
.plan .price{display:flex;align-items:baseline;gap:4px;margin-bottom:4px}
.plan .price b{font-size:34px;font-weight:800;letter-spacing:-.03em;color:var(--plum)}
.plan .price span{font-size:13.5px;color:var(--sub)}
.plan .note{font-size:12.5px;color:var(--sub-2);margin-bottom:18px}
.plan ul{flex:1;margin-bottom:20px}
.plan li{display:flex;gap:9px;padding:6px 0;font-size:13.8px;color:var(--ink-2)}
.plan li i{color:var(--mint);font-style:normal;flex:none;font-weight:700}

/* ---------- AI 小工具 ---------- */
.ai-panel{
  border:1px solid rgba(124,77,255,.22);border-radius:var(--radius);overflow:hidden;
  background:linear-gradient(160deg,#FDFCFF 0%,#F7F4FF 100%);
}
.ai-panel-hd{
  padding:14px 18px;background:linear-gradient(90deg,rgba(124,77,255,.08),rgba(214,72,111,.06));
  border-bottom:1px solid rgba(124,77,255,.14);display:flex;align-items:center;gap:9px;
  font-weight:700;font-size:14.5px;
}
.ai-panel-bd{padding:20px}

/* ---------- 上传区 ---------- */
.uploader{
  border:2px dashed var(--line-2);border-radius:var(--radius);padding:38px 20px;text-align:center;
  transition:.2s;background:#fff;cursor:pointer;
}
.uploader:hover{border-color:var(--rose);background:var(--rose-50)}
.uploader .u-ico{font-size:40px;margin-bottom:10px}
.uploader b{display:block;font-size:15.5px;margin-bottom:4px}
.uploader span{font-size:13px;color:var(--sub)}

/* 结果区 */
.res-grid{display:grid;grid-template-columns:300px 1fr;gap:26px;align-items:start}
.score-circle{text-align:center}
.score-num{font-size:52px;font-weight:800;letter-spacing:-.04em;line-height:1;background:var(--grad-ai);-webkit-background-clip:text;background-clip:text;color:transparent}
.metric{margin-bottom:13px}
.metric-top{display:flex;justify-content:space-between;font-size:13px;margin-bottom:5px}
.metric-top b{font-weight:700}
.metric-bar{height:8px;border-radius:99px;background:var(--surface);overflow:hidden}
.metric-bar i{display:block;height:100%;border-radius:99px;transition:width .8s cubic-bezier(.22,1,.36,1)}
.disclaimer{
  margin-top:18px;padding:12px 14px;border-radius:10px;background:#FFF8EC;border:1px solid rgba(228,118,27,.2);
  font-size:12.5px;color:#8A5A16;line-height:1.65;
}

/* ---------- 聊天/助手 ---------- */
.chat-log{max-height:340px;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}
.msg{max-width:82%;padding:11px 14px;border-radius:13px;font-size:14px;line-height:1.65;white-space:pre-wrap}
.msg.ai{background:#fff;border:1px solid var(--line);border-top-left-radius:4px;align-self:flex-start}
.msg.me{background:var(--grad-ai);color:#fff;border-top-right-radius:4px;align-self:flex-end}
.msg b{font-weight:700}
.chat-in{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line);background:#fff}
.chat-in input{flex:1;padding:9px 14px;border:1px solid var(--line-2);border-radius:10px;outline:none}
.chat-in input:focus{border-color:var(--violet)}
.quick{display:flex;gap:6px;flex-wrap:wrap;padding:0 12px 12px;background:#fff}
.quick button{border:1px solid var(--line-2);background:#fff;border-radius:99px;padding:5px 11px;font-size:12.5px;color:var(--ink-2);cursor:pointer}
.quick button:hover{border-color:var(--violet);color:var(--violet)}

/* ---------- 图表容器 ---------- */
.chart{width:100%}
.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--sub);margin-top:10px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:5px}

/* ---------- 悬浮助手 ---------- */
.fab{
  position:fixed;right:22px;bottom:22px;z-index:200;
  width:54px;height:54px;border-radius:18px;background:var(--grad-ai);color:#fff;
  display:grid;place-items:center;font-size:22px;cursor:pointer;border:0;
  box-shadow:0 8px 26px rgba(124,77,255,.36);transition:.22s;
}
.fab:hover{transform:translateY(-3px) scale(1.04)}
.fab-panel{
  position:fixed;right:22px;bottom:86px;z-index:201;width:352px;max-width:calc(100vw - 32px);
  border-radius:16px;overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid var(--line);
  background:#fff;display:none;flex-direction:column;
}
.fab-panel.open{display:flex;animation:pop .22s cubic-bezier(.22,1,.36,1)}
@keyframes pop{from{opacity:0;transform:translateY(12px) scale(.97)}to{opacity:1;transform:none}}

/* ---------- Toast ---------- */
.toast-wrap{position:fixed;left:50%;top:80px;transform:translateX(-50%);z-index:300;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
.toast{
  background:rgba(22,17,31,.93);color:#fff;padding:10px 18px;border-radius:10px;font-size:14px;
  box-shadow:var(--shadow);animation:tin .26s cubic-bezier(.22,1,.36,1);
}
@keyframes tin{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}

/* ---------- Footer ---------- */
.ft{background:#1B1524;color:#C9C1D2;padding:56px 0 24px;margin-top:0}
.ft a{color:#C9C1D2}
.ft a:hover{color:#fff}
.ft-grid{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:32px;padding-bottom:34px}
.ft h5{color:#fff;font-size:14px;margin-bottom:14px;font-weight:700}
.ft li{padding:5px 0;font-size:13.5px}
.ft li a:hover{color:#fff}
.ft-bot{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;font-size:12.5px;color:#8C839A;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.ft .logo-mark{background:var(--grad-ai)}
.ft .logo{color:#fff}
.ft .logo small{color:#8C839A}

/* ---------- 移动端底部导航 ---------- */
.mbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:150;
  background:rgba(255,255,255,.96);backdrop-filter:blur(14px);
  border-top:1px solid var(--line);padding:6px 4px calc(6px + env(safe-area-inset-bottom));
}
.mbar-in{display:flex;justify-content:space-around;align-items:center}
.mbar a{flex:1;text-align:center;padding:4px 0;color:var(--sub-2);font-size:10.5px;text-decoration:none}
.mbar a .mi{display:block;font-size:19px;line-height:1.2}
.mbar a.on{color:var(--rose);font-weight:700}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .hero-in{grid-template-columns:1fr;gap:32px}
  .hero-card-wrap{min-height:400px;max-width:520px}
  .g4,.g5,.g6{grid-template-columns:repeat(3,1fr)}
  .chain{grid-template-columns:repeat(3,1fr)}
  .ft-grid{grid-template-columns:1fr 1fr 1fr}
  .res-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .nav{display:none}
  .g3{grid-template-columns:repeat(2,1fr)}
  .sec{padding:52px 0}
  .cmp{grid-template-columns:1fr}
}
@media (max-width:680px){
  body{font-size:14.5px;padding-bottom:64px}
  .container{padding:0 16px}
  .hero{padding:44px 0 40px}
  .hero-actions .btn{flex:1;justify-content:center}
  .hero-stats{gap:20px}
  .hs b{font-size:21px}
  .g2,.g3,.g4,.g5,.g6{grid-template-columns:1fr}
  .chain{grid-template-columns:repeat(2,1fr)}
  .ft-grid{grid-template-columns:1fr 1fr}
  .mbar{display:block}
  .fcard{position:static;width:auto!important;margin-bottom:12px}
  .hero-card-wrap{min-height:auto}
  .sec-title{font-size:22px}
  .steps{grid-template-columns:1fr}
  .fab{bottom:74px;right:14px;width:48px;height:48px}
  .fab-panel{right:14px;bottom:132px;left:14px;width:auto;max-width:none}
  .ft{padding-bottom:80px}
  .hd-cta .btn-out{display:none}
}
@media (max-width:400px){
  .ft-grid{grid-template-columns:1fr}
  .hero-stats{gap:14px}
}