:root{
  --bg:#F3F5F9;
  --surface:#FFFFFF;
  --ink:#0E1726;
  --ink2:#5B6573;
  --ink3:#9AA3AF;
  --line:#EDF0F5;
  --brand:#6C5CE7;
  --brand2:#4A9DFF;
  --grad:linear-gradient(135deg,#7C6BFF 0%,#5B8DEF 48%,#38C6FF 100%);
  --price:#FF5A1F;
  --ok:#16A957;
  --warn:#F59E0B;
  --bad:#E5484D;
  --shadow:0 8px 24px rgba(22,33,60,.08);
  --shadow-sm:0 3px 12px rgba(22,33,60,.06);
  --r:18px;
  --r-sm:13px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{margin:0;padding:0;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg);color:var(--ink);
  -webkit-font-smoothing:antialiased;
  font-size:15px;line-height:1.5;
}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input{font-family:inherit;}
h2,h3{margin:0;}

.app{
  max-width:480px;margin:0 auto;min-height:100vh;
  display:flex;flex-direction:column;
  background:var(--bg);
  position:relative;
}

/* ---------- 顶部玻璃栏 ---------- */
.topbar{
  position:sticky;top:0;z-index:30;
  display:flex;align-items:center;justify-content:space-between;
  padding:calc(env(safe-area-inset-top) + 12px) 16px 12px;
  background:rgba(243,245,249,.82);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid rgba(237,240,245,.8);
}
.brand{display:flex;align-items:center;gap:9px;}
.logo{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  box-shadow:0 6px 16px rgba(108,92,231,.35);
}
.brand-txt{display:flex;flex-direction:column;line-height:1.05;}
.brand-txt b{font-size:17px;font-weight:800;letter-spacing:.5px;}
.brand-txt i{font-size:11px;font-style:normal;color:var(--ink2);font-weight:600;letter-spacing:1px;}
.cs-btn{
  display:flex;align-items:center;gap:5px;
  padding:8px 13px;border-radius:999px;font-size:13px;font-weight:700;
  color:#fff;background:var(--grad);box-shadow:0 6px 16px rgba(91,141,239,.4);
}

/* ---------- 滚动区 ---------- */
.scroll{flex:1;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;padding-bottom:0;display:flex;flex-direction:column;}

/* ---------- Hero ---------- */
.hero{
  position:relative;margin:12px 14px 0;border-radius:24px;overflow:hidden;
  padding:18px 18px 20px;color:#fff;background:var(--grad);
  box-shadow:0 14px 34px rgba(91,141,239,.34);
}
.deco{position:absolute;border-radius:50%;filter:blur(2px);opacity:.5;pointer-events:none;}
.deco1{width:150px;height:150px;right:-40px;top:-50px;background:radial-gradient(circle,rgba(255,255,255,.55),transparent 70%);}
.deco2{width:90px;height:90px;left:-30px;bottom:-30px;background:radial-gradient(circle,rgba(255,255,255,.35),transparent 70%);}
.deco3{width:46px;height:46px;right:30px;bottom:14px;background:radial-gradient(circle,rgba(255,255,255,.4),transparent 70%);}
.hero-top{position:relative;display:flex;align-items:center;justify-content:space-between;z-index:2;}
.hero-pill{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.35);
  padding:5px 11px;border-radius:999px;font-size:12px;font-weight:600;
}
.hero-pill .dot{width:7px;height:7px;border-radius:50%;background:#7CFFB0;box-shadow:0 0 0 4px rgba(124,255,176,.3);}
.hero-change{
  font-size:12.5px;font-weight:700;color:#fff;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);
  padding:6px 12px;border-radius:999px;
}
.hero-actions{display:flex;align-items:center;gap:7px;}
.hero-reid{
  font-size:12.5px;font-weight:700;color:#241b4a;
  background:rgba(255,255,255,.94);border:1px solid rgba(255,255,255,.6);
  padding:6px 12px;border-radius:999px;
  box-shadow:0 4px 14px rgba(0,0,0,.18);
  transition:transform .15s;
}
.hero-reid:active{transform:scale(.94);}
.hero-model{
  position:relative;z-index:2;margin-top:14px;
  font-size:30px;font-weight:850;letter-spacing:.3px;
  text-shadow:0 2px 10px rgba(0,0,0,.12);
}
.hero-sub{position:relative;z-index:2;margin-top:6px;font-size:13px;opacity:.92;font-weight:500;}
.hero-stat{
  position:relative;z-index:2;margin-top:14px;display:inline-flex;align-items:center;gap:7px;
  background:rgba(255,255,255,.18);border-radius:12px;padding:8px 13px;font-size:13px;font-weight:700;
}
.hero-stat b{font-size:17px;}

/* ---------- 搜索 ---------- */
.search-wrap{position:relative;z-index:20;margin:-16px 14px 0;}
.search{
  display:flex;align-items:center;gap:8px;
  background:var(--surface);border-radius:999px;
  padding:12px 14px;box-shadow:var(--shadow);
  border:1px solid var(--line);
}
.search .s-ic{color:var(--ink3);flex:none;}
.search input{
  flex:1;border:none;outline:none;background:transparent;
  font-size:15px;color:var(--ink);min-width:0;
}
.search input::placeholder{color:var(--ink3);}
.s-clear{
  width:22px;height:22px;border-radius:50%;background:#EEF0F5;color:var(--ink2);
  font-size:12px;display:grid;place-items:center;flex:none;
}

/* ---------- 主体两栏 ---------- */
.split{flex:1;min-height:0;display:flex;align-items:stretch;}

/* 左：分类竖栏（彩色字母徽标 · 全部蓝底高亮） */
.catrail{
  flex:none;width:90px;overflow-y:auto;padding:8px 6px 16px;
  background:linear-gradient(180deg,#F7F9FC,#F2F4F8);
  border-right:1px solid var(--line);
  scrollbar-width:none;-ms-overflow-style:none;
}
.catrail::-webkit-scrollbar{display:none;}
.cat{
  display:flex;flex-direction:column;align-items:center;gap:5px;
  width:100%;padding:10px 2px;margin:7px 0;border-radius:15px;
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow-sm);transition:.18s;
}
.cat:active{transform:scale(.97);}
.cat .avatar{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  font-size:15px;font-weight:800;color:#fff;flex:none;letter-spacing:.5px;
}
.cat .lbl{
  font-size:11px;font-weight:700;color:var(--ink2);text-align:center;line-height:1.15;
  max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:0 2px;
}
.cat.active{background:var(--grad);border-color:transparent;box-shadow:0 8px 18px rgba(91,141,239,.4);}
.cat.active .lbl{color:#fff;}
.cat.active .avatar{background:#fff;color:var(--brand);}

/* ---------- 右：配件流 ---------- */
.feed{flex:1;min-width:0;overflow-y:auto;padding:6px 14px 92px;}
.feed-head{display:flex;align-items:baseline;justify-content:space-between;margin:8px 2px 12px;}
.feed-head h2{font-size:18px;font-weight:800;letter-spacing:.3px;}
.feed-count{font-size:12.5px;color:var(--ink3);font-weight:600;}
.parts{display:flex;flex-direction:column;gap:11px;}

.card{
  display:flex;gap:13px;align-items:stretch;
  background:var(--surface);border-radius:var(--r);padding:13px;
  box-shadow:var(--shadow-sm);border:1px solid var(--line);
  transition:transform .15s,box-shadow .15s;
  animation:pop .35s both;
}
.card:active{transform:scale(.985);}
@keyframes pop{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:none;}}
.card .thumb{
  flex:none;width:54px;height:54px;border-radius:14px;display:grid;place-items:center;
  font-size:26px;background:linear-gradient(135deg,#EEF1FF,#E4F6FF);
}
.card .body{flex:1;min-width:0;display:flex;flex-direction:column;}
.card .name{font-size:15.5px;font-weight:750;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card .meta{display:flex;align-items:center;gap:7px;margin-top:6px;flex-wrap:wrap;}
.badge{font-size:11px;font-weight:700;padding:3px 8px;border-radius:999px;}
.badge.q{background:#F0EDFF;color:#6C5CE7;}
.badge.ok{background:#E7F8EE;color:var(--ok);}
.badge.warn{background:#FEF3E0;color:var(--warn);}
.badge.bad{background:#FDECEC;color:var(--bad);}
.card .fit{font-size:11.5px;color:var(--ink3);margin-top:5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.card .right{flex:none;display:flex;flex-direction:column;align-items:flex-end;justify-content:space-between;padding-left:6px;}
.card .price{font-size:19px;font-weight:850;color:var(--price);letter-spacing:-.3px;}
.card .price small{font-size:12px;font-weight:700;}
.card .plabel{font-size:10.5px;color:var(--ink3);font-weight:600;margin-top:1px;}
.card .vip{font-size:11px;color:var(--ink2);font-weight:600;margin-top:2px;}

.loading,.empty{
  text-align:center;color:var(--ink3);padding:46px 16px;font-size:14px;
}
.empty .ic{
  width:58px;height:58px;border-radius:50%;background:#EEF1F5;color:var(--ink3);
  display:grid;place-items:center;font-size:26px;font-style:italic;font-weight:800;margin:0 auto 14px;
}
.empty b{display:block;color:var(--ink2);font-size:14.5px;margin-bottom:4px;}
.tail{height:8px;}

/* ---------- 底部 Tab ---------- */
.tabbar{
  position:fixed;left:50%;transform:translateX(-50%);bottom:0;z-index:40;
  width:100%;max-width:480px;
  display:flex;justify-content:space-around;
  padding:8px 10px calc(env(safe-area-inset-bottom) + 8px);
  background:rgba(255,255,255,.9);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-top:1px solid var(--line);
}
.tab{
  display:flex;flex-direction:column;align-items:center;gap:3px;
  font-size:11px;font-weight:600;color:var(--ink3);padding:4px 14px;border-radius:12px;
}
.tab svg{opacity:.55;transition:.2s;}
.tab.active{color:var(--brand);background:linear-gradient(180deg,rgba(108,92,231,.08),rgba(108,92,231,.16));}
.tab.active svg{opacity:1;stroke:var(--brand);}

/* ---------- 弹层 ---------- */
.mask{position:fixed;inset:0;background:rgba(14,23,38,.5);z-index:50;animation:fade .2s both;}
@keyframes fade{from{opacity:0}to{opacity:1}}
.sheet{
  position:fixed;left:50%;bottom:0;transform:translate(-50%,100%);
  width:100%;max-width:480px;z-index:60;
  background:var(--surface);border-radius:22px 22px 0 0;
  max-height:86vh;display:flex;flex-direction:column;
  transition:transform .3s cubic-bezier(.22,1,.36,1);
  box-shadow:0 -10px 40px rgba(14,23,38,.2);
}
.sheet[hidden]{display:none;}
.sheet.open{transform:translate(-50%,0);}
.sheet-xl{max-height:90vh;}
.sheet-bar{width:40px;height:4px;border-radius:4px;background:#E2E6EC;margin:10px auto 2px;flex:none;}
.sheet-head{display:flex;align-items:center;justify-content:space-between;padding:6px 18px 12px;border-bottom:1px solid var(--line);}
.sheet-head h3{font-size:17px;font-weight:800;}
.sheet-x{width:30px;height:30px;border-radius:50%;background:#F2F4F8;color:var(--ink2);font-size:14px;display:grid;place-items:center;}
.sheet-body{padding:16px 18px 24px;overflow-y:auto;-webkit-overflow-scrolling:touch;}

/* 机型选择 */
.model-top{display:flex;flex-direction:column;gap:10px;margin-bottom:12px;}
.all-btn{
  width:100%;padding:13px;border-radius:14px;font-size:14px;font-weight:700;color:var(--brand);
  background:linear-gradient(180deg,rgba(108,92,231,.07),rgba(56,198,255,.1));border:1px dashed rgba(108,92,231,.4);
}
.sheet-search{
  width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--line);
  background:#F7F9FC;font-size:14px;outline:none;
}
.sheet-search:focus{border-color:var(--brand);background:#fff;}
.brand-tabs{display:flex;gap:8px;overflow-x:auto;padding-bottom:12px;scrollbar-width:none;}
.brand-tabs::-webkit-scrollbar{display:none;}
.btab{
  flex:none;padding:8px 15px;border-radius:999px;font-size:13px;font-weight:700;color:var(--ink2);
  background:#F2F4F8;white-space:nowrap;transition:.18s;
}
.btab.active{color:#fff;background:var(--grad);}
.model-list{display:flex;flex-direction:column;gap:9px;padding-bottom:10px;}
.mitem{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:14px 15px;border-radius:14px;background:#F7F9FC;border:1px solid transparent;transition:.15s;
}
.mitem:active{background:#EEF2FB;}
.mitem .mn{font-size:15px;font-weight:700;}
.mitem .my{font-size:11.5px;color:var(--ink3);font-weight:600;}
.mitem .sel{color:var(--brand);font-weight:800;font-size:13px;}

/* 详情 */
.detail-hero{display:flex;gap:13px;align-items:center;margin-bottom:16px;}
.detail-hero .thumb{width:60px;height:60px;border-radius:16px;display:grid;place-items:center;font-size:30px;background:linear-gradient(135deg,#EEF1FF,#E4F6FF);flex:none;}
.detail-hero .dn{font-size:17px;font-weight:800;line-height:1.35;}
.detail-hero .dc{font-size:12.5px;color:var(--ink3);margin-top:3px;}
.drow{display:flex;justify-content:space-between;align-items:center;padding:13px 2px;border-bottom:1px solid var(--line);}
.drow .k{color:var(--ink2);font-size:14px;font-weight:600;}
.drow .v{color:var(--ink);font-size:14px;font-weight:700;text-align:right;max-width:62%;}
.drow .v.price{color:var(--price);font-size:18px;}
.dnote{margin-top:14px;padding:13px;border-radius:14px;background:#F7F9FC;font-size:13.5px;color:var(--ink2);line-height:1.6;}
.dcta{margin-top:18px;width:100%;padding:15px;border-radius:14px;font-size:15.5px;font-weight:800;color:#fff;background:var(--grad);box-shadow:0 8px 20px rgba(91,141,239,.4);}

/* 关于 / 反馈 */
.ab-hero{text-align:center;padding:6px 0 18px;border-bottom:1px solid var(--line);margin-bottom:14px;}
.ab-hero .logo{margin:0 auto 12px;width:56px;height:56px;}
.ab-hero h3{font-size:19px;font-weight:850;}
.ab-hero p{font-size:13px;color:var(--ink2);margin:6px 0 0;}
.ab-row{display:flex;gap:11px;padding:13px 2px;border-bottom:1px solid var(--line);}
.ab-row .ic{font-size:20px;flex:none;}
.ab-row .t{font-size:13px;color:var(--ink3);font-weight:600;}
.ab-row .c{font-size:14.5px;font-weight:700;margin-top:2px;word-break:break-all;}
.copy-btn{margin-top:18px;width:100%;padding:14px;border-radius:14px;font-size:14.5px;font-weight:800;color:var(--brand);background:linear-gradient(180deg,rgba(108,92,231,.07),rgba(56,198,255,.1));border:1px solid rgba(108,92,231,.25);}
.fb-area{width:100%;min-height:110px;padding:13px;border-radius:14px;border:1px solid var(--line);background:#F7F9FC;font-size:14px;outline:none;resize:none;}
.fb-area:focus{border-color:var(--brand);background:#fff;}
.fb-tip{font-size:12px;color:var(--ink3);margin:8px 2px 0;}

/* Toast */
.toast{
  position:fixed;left:50%;bottom:96px;transform:translateX(-50%);
  background:rgba(14,23,38,.88);color:#fff;padding:10px 18px;border-radius:22px;
  font-size:13.5px;z-index:90;max-width:80%;text-align:center;animation:fade .2s both;
}
.toast[hidden]{display:none;}