/* AYOU · 移动端 H5（/m/）
 * 目标设备：320–480px 低配安卓、2G/3G 弱网、户外强光
 * 约定：单列纵向、无横向溢出、可点元素 ≥44px、正文对比度 ≥7:1
 * 不含网络字体、不含第三方脚本、不含动画（仅按钮按下反馈）
 */
:root{
  --ink:#0F1C2E; --ink2:#22364D; --mute:#55677C; --faint:#8496A9;
  --line:#DBE3ED; --bg:#fff; --bg2:#F2F6FA;
  --brand:#0E2A47; --brand2:#163A5F;
  --amber:#FFB020; --amber-d:#C97F00;
  --wa:#128C4A; --ok:#0B6B37; --bad:#B3261E;
  --pad:16px; --r:10px;
  --shadow:0 1px 2px rgba(15,28,46,.06),0 8px 24px rgba(15,28,46,.06);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:15px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans","Helvetica Neue",Arial,sans-serif;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,p{margin:0}
.wrap{max-width:560px;margin:0 auto;padding:0 var(--pad)}
.sect{padding:22px 0 6px}
.sect-hd{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:0 0 12px}
.sect-hd h2{font-size:17px;line-height:1.3;letter-spacing:-.01em}
.sect-hd .more{font-size:12.5px;font-weight:700;color:var(--brand);white-space:nowrap}
.sect-hd .sub{font-size:12px;color:var(--faint);font-weight:600}
.hint{font-size:11.5px;color:var(--faint);line-height:1.45}

/* ---------- 顶栏 ---------- */
.top{
  position:sticky;top:0;z-index:40;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);backdrop-filter:saturate(140%) blur(6px);
}
.top-in{display:flex;align-items:center;gap:10px;height:52px}
.logo{display:flex;align-items:center;gap:8px;font-weight:900;letter-spacing:.14em;font-size:15px}
.logo b{display:grid;place-items:center;width:26px;height:26px;border-radius:7px;background:var(--brand);color:#fff;font-size:12px;letter-spacing:.02em}
.logo span{font-size:10px;font-weight:700;color:var(--faint);letter-spacing:.08em}
.top-r{margin-left:auto;display:flex;align-items:center;gap:6px}
.lang{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:#fff}
.lang button{
  border:0;background:none;padding:0 9px;height:32px;font-size:11.5px;font-weight:800;color:var(--mute);letter-spacing:.04em;
}
.lang button.on{background:var(--brand);color:#fff}
.icobtn{width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:#fff;display:grid;place-items:center;color:var(--wa)}
.icobtn:active{background:var(--bg2)}

/* ---------- 首屏 ---------- */
.hero{position:relative;color:#fff;background:#0B1826;overflow:hidden}
.hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,18,30,.55),rgba(8,18,30,.86))}
.hero-in{position:relative;z-index:2;padding:26px var(--pad) 22px}
.hero-tag{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;
  background:rgba(255,176,32,.16);color:var(--amber);font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase}
.hero h1{margin:12px 0 8px;font-size:25px;line-height:1.24;letter-spacing:-.02em}
.hero p{font-size:13.5px;line-height:1.5;color:#C9D6E4;max-width:34em}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:18px 0 16px;
  border-top:1px solid rgba(255,255,255,.14);padding-top:14px}
.stats b{display:block;font-size:19px;line-height:1.1;letter-spacing:-.02em}
.stats span{display:block;margin-top:3px;font-size:10.5px;line-height:1.3;color:#9FB2C6;text-transform:uppercase;letter-spacing:.04em}
.btns{display:grid;gap:9px}
.btn{
  display:flex;align-items:center;justify-content:center;gap:8px;min-height:52px;padding:14px 18px;
  border-radius:var(--r);border:1px solid transparent;font-size:15px;font-weight:800;letter-spacing:.01em;
  text-align:center;line-height:1.25;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--amber);color:#241703;border-color:var(--amber)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn-dark{background:var(--brand);color:#fff}
.btn-sm{min-height:44px;padding:10px 14px;font-size:13.5px;border-radius:9px}
.btn-line{background:#fff;color:var(--brand);border-color:var(--line)}

/* ---------- 服务能力 2×2 ---------- */
.svc{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.svc div{display:flex;gap:9px;align-items:flex-start;padding:12px 12px;border:1px solid var(--line);border-radius:var(--r);background:#fff}
.svc svg{flex:none;width:18px;height:18px;color:var(--brand);margin-top:1px}
.svc span{font-size:12.5px;font-weight:700;line-height:1.35;color:var(--ink2)}

/* ---------- 品类横滑 ---------- */
.rail{display:flex;gap:10px;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
  scrollbar-width:none;padding:0 var(--pad) 4px;margin:0 calc(-1 * var(--pad))}
.rail::-webkit-scrollbar{display:none}
.cat{flex:0 0 138px;scroll-snap-align:start;border-radius:12px;overflow:hidden;background:#fff;border:1px solid var(--line);
  display:flex;flex-direction:column;box-shadow:0 1px 2px rgba(15,28,46,.05)}
.cat img{width:100%;height:84px;object-fit:cover;background:#E9EEF4}
.cat .cat-cap{padding:8px 10px 9px;min-height:56px}
.cat b{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:12px;line-height:1.28;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.cat i{display:block;margin-top:3px;font-style:normal;font-size:10px;color:var(--faint);font-weight:700}

/* ---------- 产品卡 ---------- */
.picks{display:grid;gap:12px}
.pick{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.pick-media{position:relative;display:block;aspect-ratio:4/3;background:#EDF1F6}
.pick-media img{width:100%;height:100%;object-fit:cover}
.badge{position:absolute;left:10px;top:10px;height:22px;padding:0 8px;border-radius:5px;background:var(--amber);color:#241703;
  font-size:10.5px;font-weight:900;letter-spacing:.04em;display:flex;align-items:center;text-transform:uppercase}
.pick-body{padding:11px 12px 12px}
.pick-cat{font-size:10.5px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--faint)}
.pick-body h3{margin:4px 0 8px;font-size:14.5px;line-height:1.35;font-weight:800;letter-spacing:-.01em}
.pick-foot{display:flex;align-items:flex-end;justify-content:space-between;gap:10px}
.price{font-size:17px;font-weight:900;letter-spacing:-.02em}
.price small{font-weight:700;font-size:10.5px;color:var(--faint);letter-spacing:0}
.pick-moq{text-align:right;font-size:10.5px;line-height:1.35;color:var(--mute);font-weight:700}
.pick-ship{margin-top:8px;padding-top:8px;border-top:1px dashed var(--line);font-size:11px;color:var(--mute);display:flex;gap:6px;align-items:center}
.pick-ship b{font-weight:800;color:var(--ink2)}
.pick-cta{display:flex;gap:8px;margin-top:10px}
.pick-cta .btn{flex:1 1 0;min-width:0}
.wa-btn{flex:0 0 46px;width:46px;height:46px;border-radius:9px;background:#E6F6EC;color:var(--wa);display:grid;place-items:center;border:1px solid #C6E9D4}
.wa-btn:active{background:#D6F0E0}

/* ---------- 深色行动区 ---------- */
.dark{background:var(--brand);color:#fff;border-radius:14px;padding:22px 18px;margin:18px 0 8px}
.dark h2{font-size:18px;line-height:1.3}
.dark p{margin:8px 0 16px;font-size:12.5px;line-height:1.55;color:#B9C9DA}

/* ---------- 页脚 ---------- */
.foot{border-top:1px solid var(--line);margin-top:22px;padding:18px 0 96px;background:var(--bg2)}
.foot .co{font-size:12px;font-weight:800;color:var(--ink2);line-height:1.5}
.foot .links{display:grid;gap:0;margin-top:10px}
.foot .links a,.foot .links button{display:flex;align-items:center;justify-content:space-between;gap:10px;
  width:100%;min-height:44px;padding:0;border:0;border-bottom:1px solid var(--line);background:none;font-size:13px;color:var(--ink2);text-align:left}
.foot .links a:active,.foot .links button:active{color:var(--brand)}
.foot .legal{margin-top:12px;font-size:11px;color:var(--faint);line-height:1.6}
.foot .legal a{text-decoration:underline}

/* ---------- 底部常驻行动条 ---------- */
.bar{
  position:fixed;left:0;right:0;bottom:0;z-index:50;background:rgba(255,255,255,.98);
  border-top:1px solid var(--line);padding:8px var(--pad) calc(8px + env(safe-area-inset-bottom));
  display:flex;align-items:center;gap:10px;
}
.bar .txt{flex:1;min-width:0;font-size:11.5px;line-height:1.3;color:var(--mute);font-weight:700}
.bar .txt b{display:block;font-size:12.5px;color:var(--ink)}
.bar .btn{flex:0 0 auto;min-width:132px}
.bar .priceblk{flex:1;min-width:0}
.bar .priceblk b{display:block;font-size:18px;font-weight:900;letter-spacing:-.02em}
.bar .priceblk span{font-size:10.5px;color:var(--faint);font-weight:700}

/* ---------- 分类列表 ---------- */
.crumb{display:flex;align-items:center;gap:8px;padding:12px 0 6px;font-size:12px;color:var(--faint)}
.crumb a{font-weight:700;color:var(--brand)}
.pagehd{padding:6px 0 10px}
.pagehd h1{font-size:21px;letter-spacing:-.02em;line-height:1.25}
.pagehd .meta{margin-top:5px;font-size:12px;color:var(--mute)}
.chips{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding:2px 0 10px;margin:0 calc(-1 * var(--pad));padding-left:var(--pad);padding-right:var(--pad)}
.chips::-webkit-scrollbar{display:none}
.chip{flex:0 0 auto;height:34px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:12.5px;font-weight:800;color:var(--ink2);display:flex;align-items:center;white-space:nowrap}
.chip.on{background:var(--brand);border-color:var(--brand);color:#fff}
.list{display:grid;gap:10px}
.row{display:flex;gap:11px;padding:10px;border:1px solid var(--line);border-radius:12px;background:#fff}
.row-thumb{flex:none;width:96px;height:96px;border-radius:9px;overflow:hidden;background:#EDF1F6}
.row-thumb img{width:100%;height:100%;object-fit:cover}
.row-body{flex:1;min-width:0;display:flex;flex-direction:column}
.row-body h3{font-size:13.5px;line-height:1.35;font-weight:800;margin:1px 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.row-meta{display:flex;align-items:flex-end;justify-content:space-between;gap:8px;margin-top:auto}
.row-meta .price{font-size:15px}
.row-meta .moq{font-size:10px;line-height:1.3;color:var(--mute);text-align:right;font-weight:700}
.row-cta{display:flex;gap:7px;margin-top:8px}
.row-cta .btn{flex:1 1 0;min-width:0;min-height:42px;font-size:13px}
.row-cta .wa-btn{flex:0 0 42px;width:42px;height:42px}
.pager{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px 0 4px}
.pager .btn{flex:0 0 auto;min-width:104px}
.pager span{font-size:12px;color:var(--mute);font-weight:700}

/* ---------- 详情 ---------- */
.gal{position:relative;background:#0B1826;aspect-ratio:4/3;overflow:hidden}
.gal img{width:100%;height:100%;object-fit:contain}
.gal-hint{position:absolute;left:10px;bottom:10px;height:26px;padding:0 10px;border-radius:13px;background:rgba(10,20,32,.66);
  color:#fff;font-size:11px;font-weight:800;display:flex;align-items:center;gap:5px}
.gal-hint svg{width:13px;height:13px}
.detail{padding:14px 0 0}
.detail h1{font-size:18px;line-height:1.35;letter-spacing:-.01em}
.detail .cat{margin:6px 0 10px;font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--faint)}
.pricerow{display:flex;align-items:flex-end;justify-content:space-between;gap:10px;padding:12px;background:var(--bg2);border-radius:10px}
.pricerow .price{font-size:22px}
.pricerow .pricerow-note{font-size:11px;color:var(--mute);line-height:1.4;font-weight:700}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}
.facts div{padding:10px;border:1px solid var(--line);border-radius:9px}
.facts span{display:block;font-size:10px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;color:var(--faint)}
.facts b{display:block;margin-top:3px;font-size:13px;line-height:1.3}
.specs{margin-top:14px;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.specs div{display:flex;justify-content:space-between;gap:14px;padding:10px 12px;font-size:12.5px;border-bottom:1px solid var(--line)}
.specs div:last-child{border-bottom:0}
.specs span{color:var(--mute);flex:none;font-weight:700}
.specs b{font-weight:800;text-align:right;color:var(--ink2)}
.fcard{margin-top:14px;padding:12px;border:1px solid var(--line);border-radius:10px;display:flex;gap:11px;align-items:center}
.fcard .av{flex:none;width:40px;height:40px;border-radius:9px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:900;font-size:13px}
.fcard b{display:block;font-size:13px;line-height:1.3}
.fcard span{font-size:11px;color:var(--mute)}
.rel{display:grid;gap:10px;margin-top:10px}

/* ---------- 表单 ---------- */
.form{padding:4px 0 8px}
.field{margin-bottom:12px}
.field label{display:block;font-size:12.5px;font-weight:800;margin-bottom:6px;color:var(--ink2)}
.field .req{color:var(--bad)}
.inp,.sel,textarea.inp{
  width:100%;min-height:48px;padding:12px 13px;border:1px solid var(--line);border-radius:9px;background:#fff;
  font-size:15px;color:var(--ink);outline:none;appearance:none;
}
textarea.inp{min-height:96px;resize:vertical;line-height:1.5}
.inp:focus,.sel:focus,textarea.inp:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,42,71,.10)}
.sel{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2355677C' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;background-size:15px;padding-right:38px}
.qty{display:flex;gap:8px;flex-wrap:wrap}
.qty button{min-height:42px;padding:0 14px;border:1px solid var(--line);border-radius:9px;background:#fff;font-size:13px;font-weight:800;color:var(--ink2)}
.qty button.on{background:#EAF0F7;border-color:var(--brand);color:var(--brand)}
.prefill{display:flex;gap:10px;align-items:center;padding:10px;border:1px solid var(--line);border-radius:10px;background:var(--bg2);margin-bottom:14px}
.prefill img{flex:none;width:52px;height:52px;border-radius:8px;object-fit:cover;background:#E4EBF3}
.prefill div{flex:1;min-width:0}
.prefill b{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:12.5px;line-height:1.35;font-weight:800}
.prefill span{font-size:11px;color:var(--mute);font-weight:700}
.prefill button{flex:none;width:36px;height:36px;border:0;background:none;color:var(--faint);font-size:19px;line-height:1}
.wa-note{display:flex;gap:8px;align-items:flex-start;padding:10px 12px;border-radius:9px;background:#E6F6EC;color:#0B5B31;font-size:11.5px;line-height:1.5;font-weight:700;margin-bottom:12px}
.wa-note svg{flex:none;width:15px;height:15px;margin-top:1px;color:var(--wa)}
.cap{display:flex;align-items:center;gap:10px}
.cap .q{flex:none;height:48px;padding:0 14px;border-radius:9px;background:var(--bg2);border:1px solid var(--line);
  display:flex;align-items:center;font-size:14px;font-weight:900;letter-spacing:.04em;color:var(--ink2)}
.cap .inp{flex:1}
.err{display:none;margin:0 0 12px;padding:10px 12px;border-radius:9px;background:#FDECEA;color:#8C1D18;font-size:12.5px;font-weight:700;line-height:1.45}
.err.on{display:block}
.submitwrap{padding-top:2px}
.submitwrap .btn{width:100%}
.submitwrap .btn{width:100%}
.form-note{margin-top:10px;font-size:11px;color:var(--faint);line-height:1.5;text-align:center}

/* ---------- 成功页 ---------- */
.done{padding:44px 0 10px;text-align:center}
.done .ok{width:64px;height:64px;margin:0 auto 16px;border-radius:50%;background:#E6F6EC;color:var(--ok);display:grid;place-items:center}
.done h1{font-size:22px;letter-spacing:-.02em}
.done p{margin:10px auto 0;max-width:30em;font-size:13.5px;line-height:1.6;color:var(--mute)}
.ref{margin:16px auto 0;display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 12px;border-radius:999px;background:var(--bg2);font-size:12px;font-weight:800;color:var(--ink2);letter-spacing:.04em}
.next{margin-top:26px;text-align:left;border:1px solid var(--line);border-radius:12px;padding:14px}
.next b{display:block;font-size:12.5px;letter-spacing:.04em;text-transform:uppercase;color:var(--faint);margin-bottom:8px}
.next ol{margin:0;padding-left:18px;font-size:12.5px;line-height:1.7;color:var(--ink2)}

/* ---------- 骨架屏 / 状态 ---------- */
.sk{position:relative;overflow:hidden;background:#E7ECF3;border-radius:8px}
.sk::after{content:"";position:absolute;inset:0;transform:translateX(-100%);
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.65),transparent);animation:sh 1.2s infinite}
@keyframes sh{100%{transform:translateX(100%)}}
.sk-card{border:1px solid var(--line);border-radius:12px;overflow:hidden}
.sk-card .m{height:150px}
.sk-card .b{padding:12px}
.sk-card .l{height:12px;margin-bottom:8px}
.sk-card .l.s{width:52%}
.empty{padding:36px 16px;text-align:center;color:var(--mute);font-size:13px;line-height:1.6}
.empty b{display:block;font-size:15px;color:var(--ink);margin-bottom:6px}
.toast{position:fixed;left:50%;bottom:96px;transform:translateX(-50%) translateY(8px);z-index:60;
  max-width:88vw;padding:10px 14px;border-radius:9px;background:#1B2A3C;color:#fff;font-size:12.5px;font-weight:700;
  opacity:0;pointer-events:none;transition:opacity .16s,transform .16s;line-height:1.45}
.toast.on{opacity:1;transform:translateX(-50%)}

/* ---------- 放大查看（原生双指缩放 + 双击） ---------- */
.zoomer{position:fixed;inset:0;z-index:80;background:#08121C;display:none;overflow:auto;-webkit-overflow-scrolling:touch;touch-action:pan-x pan-y pinch-zoom}
.zoomer.on{display:block}
.zoomer img{width:100%;height:auto;transform-origin:center center}
.zoomer .close{position:fixed;right:12px;top:calc(12px + env(safe-area-inset-top));width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,.14);border:0;color:#fff;display:grid;place-items:center}
.zoomer .tip{position:fixed;left:50%;bottom:calc(18px + env(safe-area-inset-bottom));transform:translateX(-50%);
  padding:7px 13px;border-radius:999px;background:rgba(255,255,255,.14);color:#fff;font-size:11.5px;font-weight:800;letter-spacing:.02em}

/* ---------- 省流量模式 ---------- */
html.lowdata img[data-src]{visibility:hidden}
html.lowdata .pick-media::after,html.lowdata .row-thumb::after{
  content:"Low data mode · image hidden";position:absolute;inset:0;display:grid;place-items:center;
  background:#E9EEF4;color:var(--faint);font-size:10px;font-weight:800;letter-spacing:.02em;text-align:center;padding:6px}

/* 宽屏（桌面浏览器打开 /m/）时居中成手机宽度，不影响手机布局 */
@media (min-width:640px){
  body{background:#E8EDF4}
  .top,.hero,.sect,.foot,.bar,.wrap{max-width:560px;margin-left:auto;margin-right:auto}
  .top{position:sticky}
  .bar{left:50%;transform:translateX(-50%);width:100%}
  .shell{background:#fff;box-shadow:0 0 0 1px var(--line)}
}