/* ============================================================
   TOPRECISION · 紧固件垂直门户 — 设计系统
   工业蓝（navy→steel）· 行动琥珀 · 钢灰中性 · 1600px 容器
   ============================================================ */
:root{
  --navy-950:#071a33; --navy-900:#0a1f3c; --navy-800:#0e2a52; --navy-700:#123a6b;
  --blue-700:#16519e; --blue-600:#1d5fb0; --blue-500:#2a74d0; --blue-400:#4a94e8; --blue-200:#c4ddf7; --blue-100:#e3eefa; --blue-50:#f2f7fd;
  --ink:#142238; --text:#33415c; --muted:#6b7a94; --line:#dbe4f0; --line-soft:#eaf0f8;
  --bg:#f4f7fb; --card:#ffffff;
  --amber:#f2a33c; --amber-600:#e0861a; --amber-50:#fdf3e3;
  --teal:#1e7f74; --teal-50:#e5f4f2;
  --green:#1f9d55; --green-50:#e9f7ef;
  --red:#d64545; --red-50:#fbecec;
  --radius:10px; --radius-lg:14px;
  --container:1600px;
  --shadow:0 6px 22px rgba(15,42,84,.08);
  --shadow-lg:0 14px 40px rgba(15,42,84,.14);
  --header-h:212px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC",system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);font-size:15px;line-height:1.65;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{color:var(--ink);line-height:1.3;font-weight:700}
a{color:var(--blue-600);text-decoration:none}
a:hover{color:var(--blue-500)}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:14px}
.wrap{max-width:var(--container);margin:0 auto;padding:0 28px}
.hidden{display:none!important}
.serif-num{font-family:"Oswald",sans-serif;letter-spacing:.5px}

/* ============ 顶部工具条 ============ */
.utility{background:var(--navy-950);color:#c7d6ec;font-size:12.5px}
.utility .wrap{display:flex;justify-content:space-between;align-items:center;height:34px;gap:16px}
.utility a{color:#c7d6ec;margin-right:14px}
.utility a:hover{color:#fff}
.u-right{display:flex;align-items:center;gap:6px}
.u-right .sep{opacity:.35}

/* ============ 头部（200px 蓝调渐变横幅） ============ */
.site-header{position:relative;background:linear-gradient(135deg,#071a33 0%,#0e2a52 42%,#1d5fb0 100%);color:#eaf1fc;overflow:hidden}
.site-header::before{content:"";position:absolute;inset:0;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Cpath d='M30 2 54 16v28L30 58 6 44V16Z' fill='none' stroke='%23ffffff' stroke-opacity='.06' stroke-width='2'/%3E%3C/svg%3E");opacity:.8}
.site-header .wrap{position:relative;z-index:1;padding-top:14px;padding-bottom:16px}
.brand-row{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:12px}
.logo-mark{width:46px;height:46px;border-radius:10px;background:linear-gradient(145deg,#2a74d0,#1d5fb0);display:grid;place-items:center;box-shadow:0 4px 14px rgba(0,0,0,.25);flex:none}
.logo-mark svg{width:30px;height:30px}
.logo-name{line-height:1.1}
.logo-name b{display:block;font-family:"Oswald",sans-serif;font-size:26px;letter-spacing:1px;color:#fff;font-weight:600}
.logo-name span{font-size:11.5px;color:#a9c6ea;letter-spacing:.5px}
.header-tools{display:flex;align-items:center;gap:12px}
.searchbox{display:flex;align-items:center;background:#0d2f5f;border:1px solid rgba(255,255,255,.22);border-radius:30px;padding:2px;width:360px;transition:.2s}
.searchbox:focus-within{border-color:#6ea8ee;background:#0f3568}
.searchbox input{flex:1;border:0;background:transparent;color:#fff;padding:9px 14px;outline:none;font-size:13.5px}
.searchbox input::placeholder{color:#8fb2de}
.searchbox .sgo{flex:none;width:38px;height:34px;border:0;border-radius:24px;background:linear-gradient(135deg,#f2a33c,#e0861a);color:#fff;display:grid;place-items:center}
.searchbox .sgo:hover{filter:brightness(1.06)}
.header-cta{display:flex;align-items:center;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:9px;font-weight:600;border:1px solid transparent;transition:.18s;white-space:nowrap;line-height:1}
.btn-primary{background:linear-gradient(135deg,#f2a33c,#e0861a);color:#fff;box-shadow:0 4px 14px rgba(224,134,26,.35)}
.btn-primary:hover{filter:brightness(1.07);color:#fff}
.btn-ghost{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.32);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff}
.btn-outline{background:transparent;border-color:#7fa5d8;color:#1d5fb0}
.btn-outline:hover{background:var(--blue-50)}
.btn-light{background:#fff;color:#1d5fb0;box-shadow:var(--shadow)}
.btn-light:hover{background:var(--blue-50)}
.btn-sm{padding:8px 14px;font-size:13px}
.btn-md{padding:11px 18px;font-size:14px}
.btn-lg{padding:14px 26px;font-size:15px}
.btn-block{width:100%}

/* ============ 主导航（任务制） ============ */
.mainnav{margin-top:14px;border-top:1px solid rgba(255,255,255,.16);padding-top:10px}
.mainnav .wrap{display:flex;gap:4px;align-items:center}
.navlink{color:#dbe7f7;font-size:14.5px;font-weight:500;padding:9px 13px;border-radius:8px;position:relative}
.navlink:hover{color:#fff;background:rgba(255,255,255,.09)}
.navlink.active{color:#fff;background:rgba(255,255,255,.14)}
.navlink.active::after{content:"";position:absolute;left:13px;right:13px;bottom:2px;height:3px;border-radius:3px;background:var(--amber)}
.navlink .dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#7fd39a;margin-right:6px;vertical-align:2px}
.nav-spacer{flex:1}

/* ============ Hero 区 ============ */
.hero{position:relative;z-index:1;padding:34px 0 46px;background:linear-gradient(180deg,rgba(7,26,51,.05),rgba(7,26,51,.05)),linear-gradient(135deg,#0a1f3c 0%,#0e2a52 46%,#1d5fb0 100%)}
.hero .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#d9e7fb;padding:6px 14px;border-radius:30px;font-size:12.5px;margin-bottom:18px}
.hero-eyebrow .pulse{width:8px;height:8px;border-radius:50%;background:#7fd39a;box-shadow:0 0 0 0 rgba(127,211,154,.6);animation:pl 2s infinite}
@keyframes pl{70%{box-shadow:0 0 0 9px rgba(127,211,154,0)}100%{box-shadow:0 0 0 0 rgba(127,211,154,0)}}
.hero h1{color:#fff;font-size:40px;font-weight:800;line-height:1.22;margin-bottom:14px}
.hero h1 em{font-style:normal;color:#ffd28a}
.hero p.lead{color:#cfe0f7;font-size:16.5px;max-width:620px;margin-bottom:22px}
.hero-stats{display:flex;gap:34px;margin-top:26px;flex-wrap:wrap}
.hero-stat b{font-family:"Oswald";font-size:30px;color:#fff;display:block;line-height:1}
.hero-stat span{font-size:12.5px;color:#a9c6ea}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:8px}
.hero-visual{position:relative;min-height:320px}
.hero-card{position:absolute;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(6px);border-radius:14px;padding:18px 20px;color:#eef4fd;box-shadow:0 18px 50px rgba(0,0,0,.25)}
.hc-sel{width:300px;top:6px;right:4px}
.hc-flow{width:250px;bottom:10px;left:0}
.hc-flag{width:210px;bottom:40px;right:24px}
.hero-card .hc-t{font-size:12px;color:#a9c6ea;margin-bottom:8px;display:flex;align-items:center;gap:7px}
.hero-card .hc-t .i{width:20px;height:20px;border-radius:6px;background:var(--amber);display:grid;place-items:center;color:#fff;font-size:11px;font-weight:700}
.hc-pill{display:inline-block;font-size:11px;padding:4px 9px;border-radius:20px;margin:3px 4px 3px 0;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2)}
.hc-line{display:flex;align-items:center;gap:10px;margin:7px 0}
.hc-line .hl{flex:1;height:7px;border-radius:6px;background:rgba(255,255,255,.16)}
.hc-line .hl i{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,#7fd39a,#2a74d0)}
.hc-line span{font-size:11.5px;color:#cfe0f7;width:70px;text-align:right}
.hc-note{font-size:12px;color:#9fb9de}

/* ============ 通用区块 ============ */
.section{padding:52px 0}
.section.tight{padding:34px 0}
.section.alt{background:#fff}
.section.dark{background:var(--navy-900);color:#c7d6ec}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap}
.sec-kicker{font-size:12px;font-weight:700;letter-spacing:1.5px;color:var(--blue-600);text-transform:uppercase;margin-bottom:8px}
.sec-title{font-size:27px;font-weight:800}
.sec-sub{color:var(--muted);max-width:720px;margin-top:8px;font-size:14.5px}
.sec-more{font-size:14px;font-weight:600;color:var(--blue-600)}
.sec-more:hover{color:var(--amber-600)}

/* ============ 卡片 ============ */
.grid{display:grid;gap:28px}
.g4{grid-template-columns:repeat(4,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g5{grid-template-columns:repeat(5,1fr)}
.g6{grid-template-columns:repeat(6,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow);overflow:hidden;transition:.2s;position:relative}
.card.clickable{cursor:pointer}
.card.clickable:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#b8d2ef}
.card-body{padding:24px}
.card-pad{padding:28px}
.family-card .fc-top{background:linear-gradient(135deg,#0e2a52,#1d5fb0);color:#fff;padding:18px;display:flex;align-items:center;gap:14px;min-height:76px}
.family-card .fc-ic{width:46px;height:46px;flex:none;border-radius:10px;background:rgba(255,255,255,.14);display:grid;place-items:center}
.family-card .fc-ic svg{width:28px;height:28px}
.family-card .fc-t{font-size:17px;font-weight:700;color:#fff}
.family-card .fc-s{font-size:12px;color:#bcd2ee}
.family-card .fc-meta{font-size:12.5px;color:var(--muted);padding:12px 16px;border-bottom:1px solid var(--line-soft)}
.family-card .fc-links{padding:12px 16px}
.family-card .fc-links a{font-size:13px;margin-right:12px;font-weight:600}
.fam-count{display:inline-block;background:var(--amber-50);color:var(--amber-600);font-weight:700;border-radius:20px;padding:1px 9px;font-size:12px;margin-left:6px}

/* ============ 徽章 / 标签 ============ */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:11.5px;font-weight:600;padding:3px 9px;border-radius:20px;line-height:1.4;white-space:nowrap}
.b-ok{background:var(--green-50);color:var(--green)}
.b-amber{background:var(--amber-50);color:var(--amber-600)}
.b-red{background:var(--red-50);color:var(--red)}
.b-blue{background:var(--blue-50);color:var(--blue-600)}
.b-teal{background:var(--teal-50);color:var(--teal)}
.b-gray{background:#eef1f6;color:var(--muted)}
.b-ghost{background:rgba(255,255,255,.14);color:#dce8fa;border:1px solid rgba(255,255,255,.24)}
.tag{display:inline-block;background:#eef3fa;color:#44587a;font-size:12px;padding:3px 10px;border-radius:6px;margin:3px 4px 0 0}
.sku{font-family:"Oswald",sans-serif;letter-spacing:.5px;color:var(--blue-700);font-size:13px}

/* ============ 行业入口卡 ============ */
.industry-card{padding:22px;display:block;color:var(--text);border:1px solid var(--line);background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow);transition:.2s}
.industry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#b8d2ef;color:var(--text)}
.industry-card .ic-ic{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,#0e2a52,#1d5fb0);display:grid;place-items:center;margin-bottom:14px}
.industry-card .ic-ic svg{width:26px;height:26px}
.industry-card h3{font-size:17px;margin-bottom:6px}
.industry-card p{font-size:13px;color:var(--muted);margin-bottom:12px;min-height:42px}
.industry-card .ic-tags{display:flex;flex-wrap:wrap;gap:5px}
.industry-card .ic-tags span{font-size:11px;background:#f2f6fc;color:#5a6f92;padding:2px 8px;border-radius:5px}

/* ============ 步骤 / 时间轴 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px 18px;box-shadow:var(--shadow)}
.step .st-no{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,#1d5fb0,#2a74d0);color:#fff;display:grid;place-items:center;font-family:"Oswald";font-weight:600;font-size:15px;margin-bottom:12px}
.step h4{font-size:15px;margin-bottom:5px}
.step p{font-size:12.5px;color:var(--muted)}
.timeline{display:grid;grid-template-columns:minmax(120px,180px) 24px 1fr;gap:0;row-gap:0;margin-top:6px}
.tl-node{padding:16px 0;border-bottom:1px dashed var(--line)}
.tl-time{font-family:"Oswald";font-size:15px;font-weight:600;color:var(--blue-700);padding:20px 0}
.tl-axis{display:grid;grid-template-columns:1fr;justify-items:center}
.tl-dot{width:14px;height:14px;border-radius:50%;background:var(--amber);border:3px solid #fff;box-shadow:0 0 0 2px var(--amber);margin-top:24px;z-index:1}
.tl-line{width:2px;background:var(--line);flex:1}
.tl-body{padding:20px 0 18px 6px}
.tl-body h4{font-size:15px}
.tl-body p{font-size:13px;color:var(--muted);margin-top:4px}

/* ============ 表格 ============ */
.tbl{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;font-size:13.5px}
.tbl th{background:var(--navy-900);color:#e7eefb;text-align:left;padding:11px 14px;font-weight:600;font-size:13px;white-space:nowrap}
.tbl td{padding:11px 14px;border-top:1px solid var(--line-soft);vertical-align:top}
.tbl tr:nth-child(even) td{background:#fafcff}
.tbl.fixed{table-layout:fixed}
.tbl .num{font-family:"Oswald";font-variant-numeric:tabular-nums;color:var(--ink);font-weight:600}

/* ============ 表单 ============ */
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:6px}
.field label .req{color:var(--red)}
.field .hint{font-size:12px;color:var(--muted);margin-top:4px}
.field input[type=text],.field input[type=email],.field input[type=tel],.field input[type=number],.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:9px;padding:11px 13px;background:#fff;color:var(--ink);outline:none;transition:.15s}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue-400);box-shadow:0 0 0 3px rgba(42,116,208,.12)}
.field textarea{resize:vertical;min-height:90px}
.checkline{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--text);margin:8px 0}
.checkline input{margin-top:3px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}
.form-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow)}

/* ============ 筛选 ============ */
.filters{display:flex;flex-wrap:wrap;gap:12px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:22px;box-shadow:var(--shadow)}
.filters select,.filters input[type=text]{border:1px solid var(--line);border-radius:8px;padding:8px 12px;background:#fbfdff;color:var(--ink);outline:none}
.filters select:focus,.filters input:focus{border-color:var(--blue-400)}
.filter-group{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.fchip{border:1px solid var(--line);background:#fff;color:#44587a;border-radius:20px;padding:5px 13px;font-size:13px;cursor:pointer;transition:.15s}
.fchip:hover{border-color:var(--blue-400)}
.fchip.on{background:var(--blue-600);border-color:var(--blue-600);color:#fff}
.count-line{font-size:13px;color:var(--muted);margin-bottom:14px}
.count-line b{color:var(--blue-700);font-family:"Oswald";font-size:15px}
.f-lb{font-size:13px;font-weight:600;color:var(--ink);min-width:56px}
.filter-actions{display:flex;align-items:center;gap:14px;width:100%;flex-wrap:wrap}
.empty{text-align:center;padding:40px 20px;color:var(--muted)}
.empty h3{color:var(--ink);font-size:18px}

/* ============ 向导 ============ */
.wizard-wrap{max-width:980px;margin:0 auto}
.wz-steps{display:flex;margin-bottom:24px;gap:0}
.wz-step{flex:1;text-align:center;position:relative;padding:0 6px}
.wz-step .wz-ic{width:38px;height:38px;border-radius:50%;background:#dde6f3;color:#7c8aa5;display:grid;place-items:center;margin:0 auto 8px;font-family:"Oswald";font-weight:600;position:relative;z-index:1;border:2px solid #fff;box-shadow:0 0 0 2px #dde6f3}
.wz-step.done .wz-ic{background:var(--green);color:#fff;box-shadow:0 0 0 2px var(--green)}
.wz-step.on .wz-ic{background:var(--blue-600);color:#fff;box-shadow:0 0 0 2px var(--blue-600)}
.wz-step .wz-lb{font-size:12.5px;color:var(--muted)}
.wz-step.on .wz-lb{color:var(--ink);font-weight:600}
.wz-step::before{content:"";position:absolute;top:19px;left:-50%;width:100%;height:2px;background:#dde6f3;z-index:0}
.wz-step:first-child::before{display:none}
.wz-step.done::before,.wz-step.done~.wz-step::before{background:var(--green)}
.wz-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow)}
.wz-panel h3{font-size:20px;margin-bottom:6px}
.wz-panel .wz-sub{color:var(--muted);font-size:14px;margin-bottom:20px}
.opt-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px}
.opt-card{border:1px solid var(--line);border-radius:10px;padding:13px 14px;cursor:pointer;transition:.15s;background:#fbfdff}
.opt-card:hover{border-color:var(--blue-400)}
.opt-card.on{border-color:var(--blue-600);background:var(--blue-50);box-shadow:0 0 0 2px rgba(42,116,208,.15)}
.opt-card b{font-size:14px;color:var(--ink);display:block}
.opt-card span{font-size:12px;color:var(--muted)}
.wz-nav{display:flex;justify-content:space-between;margin-top:22px;gap:12px}
.rule-legend{display:flex;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--muted);margin-bottom:16px}
.rule-legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px;vertical-align:1px}
.legend-hard{background:var(--red)} .legend-soft{background:var(--amber)} .legend-unknown{background:#8b6bd0}
.candidate{border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:14px;background:#fff}
.candidate .cd-top{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;flex-wrap:wrap}
.candidate .cd-name{font-size:16px;font-weight:700;color:var(--ink)}
.candidate .cd-spec{font-size:12.5px;color:var(--muted);margin-top:2px}
.candidate .cd-actions{display:flex;gap:8px;flex-wrap:wrap}
.cd-tags{margin-top:12px;display:flex;flex-wrap:wrap;gap:6px}
.rule-line{font-size:13px;margin:6px 0;padding:8px 12px;border-radius:8px;display:flex;gap:8px;align-items:flex-start}
.rl-hard{background:var(--red-50);color:#a33434}
.rl-soft{background:var(--amber-50);color:#9c6414}
.rl-unknown{background:#f0ebfb;color:#6c4fb0}
.disclaimer{margin-top:20px;background:var(--amber-50);border:1px solid #f0d8ae;border-radius:10px;padding:14px 16px;font-size:12.5px;color:#7a5a22}
.disclaimer b{color:#6b4c16}
.result-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}

/* ============ 证据 / 追溯 ============ */
.ev-card{border:1px solid var(--line);border-radius:12px;padding:18px;background:#fff}
.ev-hash{font-family:"Consolas","Oswald",monospace;font-size:11px;color:#7a86a0;background:#f2f5fa;padding:6px 10px;border-radius:6px;word-break:break-all;margin-top:10px}
.verify-note{font-size:12px;color:var(--muted);margin-top:8px;display:flex;align-items:center;gap:7px}
.trace-chain{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.trace-node{background:var(--blue-50);border:1px solid var(--blue-200);color:var(--blue-700);font-size:12px;padding:6px 12px;border-radius:8px}
.trace-arrow{color:#9fb0c9;font-weight:700}
.seal{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;color:var(--green);background:var(--green-50);padding:5px 11px;border-radius:7px}

/* ============ 供应商评分 ============ */
.grade-A{background:var(--green);color:#fff} .grade-B{background:var(--blue-500);color:#fff} .grade-C{background:var(--amber);color:#fff} .grade-D{background:#a9a9b5;color:#fff}
.grade-badge{font-family:"Oswald";font-weight:700;font-size:13px;width:26px;height:26px;border-radius:8px;display:grid;place-items:center}
.scorebar{height:7px;border-radius:6px;background:#eef1f6;overflow:hidden;width:110px}
.scorebar i{display:block;height:100%;background:linear-gradient(90deg,#1d5fb0,#2a74d0)}

/* ============ 社区 ============ */
.post-card{border:1px solid var(--line);border-radius:12px;padding:18px;background:#fff;margin-bottom:14px}
.post-card .pc-head{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#1d5fb0,#2a74d0);color:#fff;display:grid;place-items:center;font-weight:700;font-size:15px;flex:none}
.post-card h4{font-size:15.5px;margin-bottom:6px;color:var(--ink)}
.post-card p{font-size:14px;color:var(--text)}
.post-meta{font-size:12px;color:var(--muted);margin-top:10px;display:flex;gap:14px;flex-wrap:wrap}
.reply{border-left:3px solid var(--blue-200);background:#f7faff;padding:12px 14px;border-radius:0 8px 8px 0;margin-top:12px;font-size:13.5px}

/* ============ 页脚（六栏） ============ */
.site-footer{background:var(--navy-950);color:#a9bcd9;margin-top:0}
.site-footer .wrap{padding-top:46px;padding-bottom:30px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr 1.3fr;gap:30px}
.foot-brand .fb-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.foot-brand .fb-logo b{font-family:"Oswald";font-size:21px;color:#fff;letter-spacing:1px}
.foot-brand p{font-size:13px;color:#8fa6c8;margin-bottom:16px}
.foot-brand .fb-cert{display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}
.foot-cert{font-size:10.5px;font-weight:700;color:#cfe0f7;border:1px solid rgba(255,255,255,.22);padding:4px 9px;border-radius:6px;letter-spacing:.5px}
.foot-col h4{color:#fff;font-size:14px;margin-bottom:14px;font-weight:600}
.foot-col a{display:block;color:#a9bcd9;font-size:13px;padding:5px 0}
.foot-col a:hover{color:#fff}
.foot-contact a{display:flex;align-items:flex-start;gap:9px;color:#a9bcd9;font-size:13px;padding:5px 0}
.foot-contact a:hover{color:#fff}
.foot-contact svg{flex:none;margin-top:3px;opacity:.7}
.foot-bottom{border-top:1px solid rgba(255,255,255,.10);margin-top:34px;padding-top:20px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:#7e95b8}
.foot-bottom a{color:#8fa6c8;margin-left:14px}
.foot-bottom a:hover{color:#fff}

/* ============ 其他组件 ============ */
.breadcrumb{font-size:12.5px;color:var(--muted);margin-bottom:16px;background:#fff;border:1px solid var(--line);border-radius:9px;padding:9px 14px;display:flex;flex-wrap:wrap;gap:6px}
.breadcrumb a{color:var(--blue-600)}
.breadcrumb span{color:#9fb0c9}
.notice-bar{background:var(--blue-50);border:1px solid var(--blue-200);color:#1a4a86;font-size:13px;padding:11px 16px;border-radius:10px;margin-bottom:20px;display:flex;gap:10px;align-items:center}
.notice-bar.warn{background:var(--amber-50);border-color:#f0d8ae;color:#7a5a22}
.notice-bar.info{background:#f0f6fd;border-color:#cfe0f7;color:#1a4a86}
.tabs{display:flex;gap:6px;border-bottom:2px solid var(--line);margin-bottom:22px;overflow-x:auto}
.tab{padding:10px 18px;font-size:14px;font-weight:600;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;white-space:nowrap}
.tab.on{color:var(--blue-700);border-bottom-color:var(--blue-600)}
.accordion .acc{border:1px solid var(--line);border-radius:10px;background:#fff;margin-bottom:10px;overflow:hidden}
.acc-head{padding:15px 18px;cursor:pointer;font-weight:600;color:var(--ink);display:flex;justify-content:space-between;align-items:center;font-size:14.5px}
.acc-head .caret{transition:.2s;color:var(--muted)}
.acc.open .acc-head .caret{transform:rotate(180deg)}
.acc-body{padding:0 18px 16px;font-size:14px;color:var(--text);display:none}
.acc.open .acc-body{display:block}
.kv{display:grid;grid-template-columns:150px 1fr;gap:10px 16px;font-size:13.5px}
.kv dt{color:var(--muted)}
.kv dd{color:var(--ink)}
.metric{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 20px;box-shadow:var(--shadow)}
.metric .m-lb{font-size:12.5px;color:var(--muted)}
.metric .m-val{font-family:"Oswald";font-size:30px;color:var(--ink);font-weight:600;line-height:1.1;margin:4px 0}
.metric .m-delta{font-size:12.5px;color:var(--green);font-weight:600}
.metric .m-delta.down{color:var(--red)}
.compare-bar{position:fixed;left:0;right:0;bottom:0;background:var(--navy-900);color:#dce8fa;z-index:90;box-shadow:0 -6px 24px rgba(0,0,0,.25);display:none}
.compare-bar .cb-in{display:flex;align-items:center;gap:12px;padding:10px 20px;max-width:1600px;margin:0 auto}
.compare-thumb{width:56px;font-size:10.5px;color:#a9c6ea}
.compare-thumb b{display:block;color:#fff;font-size:11.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);background:var(--navy-900);color:#fff;padding:12px 22px;border-radius:10px;box-shadow:var(--shadow-lg);font-size:14px;z-index:200;opacity:0;pointer-events:none;transition:.25s}
.toast.show{opacity:1;transform:translateX(-50%) translateY(-6px)}
.modal-mask{position:fixed;inset:0;background:rgba(7,26,51,.55);z-index:150;display:grid;place-items:center;padding:20px;backdrop-filter:blur(2px)}
.modal{background:#fff;border-radius:14px;max-width:480px;width:100%;padding:26px;box-shadow:var(--shadow-lg);max-height:86vh;overflow:auto}
.modal h3{font-size:18px;margin-bottom:10px}
.notfound{text-align:center;padding:60px 20px;color:var(--muted)}
.notfound .nf-ic{font-size:44px;margin-bottom:12px}
.page-head{background:linear-gradient(135deg,#0e2a52,#1d5fb0);color:#fff;padding:34px 0 30px;position:relative;overflow:hidden}
.page-head::before{content:"";position:absolute;inset:0;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60'%3E%3Cpath d='M30 2 54 16v28L30 58 6 44V16Z' fill='none' stroke='%23fff' stroke-opacity='.06'/%3E%3C/svg%3E")}
.page-head .wrap{position:relative;z-index:1}
.page-head h1{color:#fff;font-size:30px;font-weight:800;margin-bottom:8px}
.page-head p{color:#cfe0f7;font-size:15px;max-width:760px}
.page-head .ph-crumb{font-size:12.5px;color:#a9c6ea;margin-top:12px}
.page-head .ph-crumb a{color:#cfe0f7}
.detail-hero{background:linear-gradient(135deg,#0e2a52,#1d5fb0);color:#fff;padding:30px 0}
.detail-hero h1{color:#fff;font-size:26px}
.detail-hero .dh-sub{color:#cfe0f7;font-size:14px;margin-top:6px}
.big-stat{text-align:center;padding:20px 14px}
.big-stat b{font-family:"Oswald";font-size:34px;color:var(--blue-700);display:block}
.big-stat span{font-size:12.5px;color:var(--muted)}
.donut{position:relative;width:150px;height:150px;border-radius:50%;background:conic-gradient(var(--blue-600) 0 48%,var(--amber) 48% 75%,var(--teal) 75% 89%,var(--blue-200) 89% 100%);display:grid;place-items:center;margin:0 auto}
.donut::before{content:"";position:absolute;inset:14px;background:#fff;border-radius:50%}
.donut .donut-lb{position:relative;z-index:1;text-align:center;font-size:12px;color:var(--muted)}
.donut .donut-lb b{font-family:"Oswald";font-size:22px;color:var(--ink);display:block}
.legend-row{display:flex;align-items:center;gap:8px;font-size:13px;margin:6px 0}
.legend-row .sw{width:12px;height:12px;border-radius:4px;flex:none}
.bar-row{display:flex;align-items:center;gap:10px;margin:9px 0}
.bar-row .br-lb{width:96px;font-size:12.5px;color:var(--muted);text-align:right;flex:none}
.bar-row .br-track{flex:1;height:12px;background:#eef1f6;border-radius:7px;overflow:hidden}
.bar-row .br-track i{display:block;height:100%;border-radius:7px;background:linear-gradient(90deg,#1d5fb0,#2a74d0)}
.bar-row .br-val{width:64px;font-family:"Oswald";font-size:13px;color:var(--ink);font-weight:600}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .g4{grid-template-columns:repeat(3,1fr)}
  .g6{grid-template-columns:repeat(4,1fr)}
  .g5{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1024px){
  .hero .wrap{grid-template-columns:1fr}
  .hero-visual{display:none}
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .g5{grid-template-columns:repeat(2,1fr)}
  .g6{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .searchbox{width:260px}
}
@media (max-width:768px){
  .wrap{padding:0 16px}
  .g4,.g3,.g5,.g6{grid-template-columns:repeat(2,1fr)}
  .g2{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .hero h1{font-size:27px}
  .steps{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .foot-grid .foot-brand{grid-column:1/-1}
  .utility .u-left{display:none}
  .wz-steps{overflow-x:auto}
  .opt-grid{grid-template-columns:1fr 1fr}
  .header-tools .searchbox{display:none}
  .header-cta .btn-md{display:none}
  .header-cta .btn-sm{display:inline-flex}
  .mainnav{overflow-x:auto;scrollbar-width:none}
  .mainnav::-webkit-scrollbar{display:none}
  .mainnav .wrap{min-width:660px;width:max-content}
  .timeline{grid-template-columns:64px 20px 1fr}
  .kv{grid-template-columns:110px 1fr}
}
@media (max-width:480px){
  .g4,.g3,.g5,.g6,.g2{grid-template-columns:1fr}
  .hero-stats{gap:18px}
}

/* ---- 哈希校验工具 ---- */
.dropzone{border:2px dashed var(--blue-200);border-radius:var(--radius-lg);padding:38px 20px;text-align:center;cursor:pointer;transition:.2s;background:var(--blue-50)}
.dropzone:hover,.dropzone.on{border-color:var(--blue-500);background:var(--blue-100)}
.dz-ic{color:var(--blue-500);margin-bottom:10px}
.dz-t{font-weight:600;color:var(--ink)}
.dz-s{font-size:13px;color:var(--muted);margin-top:4px}
.mono,input.mono{font-family:ui-monospace,Consolas,"SF Mono",monospace;font-size:12px;letter-spacing:.2px;word-break:break-all}
.match-ok{border:1px solid var(--teal);background:var(--teal-50);border-radius:var(--radius);padding:12px 14px;color:var(--teal);font-size:14px}
.match-ok b{display:block;margin-bottom:4px}
.match-bad{border:1px solid var(--red);background:var(--red-50);border-radius:var(--radius);padding:12px 14px;color:var(--red);font-size:14px}
.match-bad b{display:block;margin-bottom:4px}
.chk-list{list-style:none;margin-top:12px}
.chk-list li{display:flex;gap:10px;align-items:flex-start;padding:7px 0;color:var(--text);font-size:14px}
.chk-dot{flex:none;width:20px;height:20px;border-radius:50%;background:var(--blue-600);color:#fff;font-size:11px;display:inline-flex;align-items:center;justify-content:center;margin-top:2px}

/* ---- 工程计算工具 ---- */
.calc-tabs{display:flex;gap:8px;margin-bottom:20px;flex-wrap:wrap}
.calc-tab{border:1px solid var(--line);background:#fff;color:var(--text);padding:9px 20px;border-radius:999px;font-size:14px;font-weight:600;transition:.15s}
.calc-tab:hover{border-color:var(--blue-400)}
.calc-tab.on{background:var(--blue-600);color:#fff;border-color:var(--blue-600)}
.calc-out{font-size:20px;font-weight:700;color:var(--blue-700);font-family:"Oswald";margin-top:8px}
.calc-result{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.calc-row{display:flex;justify-content:space-between;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line-soft);font-size:14px}
.calc-row:last-child{border-bottom:none}
.calc-row span{color:var(--muted)}
.calc-row b{color:var(--ink);font-family:"Oswald";font-size:16px}
.calc-row b.hl{color:var(--amber-600);font-size:20px}


/* ---- 供应商评分交互 ---- */
.sup-card{cursor:pointer;margin-bottom:14px}
.sup-card:hover{border-color:#b8d2ef}
.sup-card.open{border-color:var(--blue-500);box-shadow:var(--shadow-lg)}
.sup-dims{display:grid;gap:8px}
.sup-dim{display:flex;align-items:center;gap:10px}
.sup-dim .sd-lb{width:72px;font-size:12.5px;color:var(--muted);flex:none}
.sup-dim .sd-track{flex:1;height:9px;background:#eef1f6;border-radius:6px;overflow:hidden}
.sup-dim .sd-track i{display:block;height:100%;background:linear-gradient(90deg,#1d5fb0,#2a74d0)}
.sup-dim b{width:34px;font-family:"Oswald";font-size:13px;color:var(--ink);text-align:right}
.sup-total{display:flex;justify-content:space-between;align-items:center;border-top:1px dashed var(--line);margin-top:10px;padding-top:10px;font-size:14px}
.sup-total span{color:var(--muted)}
.sup-total b{color:var(--blue-700);font-family:"Oswald";font-size:20px}


/* ---- 运营看板：漏斗 ---- */
.funnel{margin-top:4px}
.frow{background:linear-gradient(90deg,#0e2a52,#1d5fb0);color:#fff;padding:9px 12px;border-radius:7px;margin:7px 0;font-size:13px;font-weight:600;display:flex;justify-content:space-between;gap:10px;min-width:120px}
.frow em{font-style:normal;font-size:11px;opacity:.75}

/* ---- 产品比较：差异高亮 ---- */
.tbl.compare tr.diff th,.tbl.compare tr.diff td{background:#fff3d6 !important}
.tbl.compare tr.same td{color:#55637d}
.tbl.compare tr.diff th{color:#8a6a1a;font-weight:700}
.compare-table-wrap{overflow-x:auto}
.cth{display:flex;flex-direction:column;gap:8px;align-items:flex-start}
.cth .sku{white-space:nowrap}


/* ---- 右下角客服浮窗 ---- */
.cs-float{position:fixed;right:18px;bottom:86px;z-index:95;display:flex;flex-direction:column;gap:10px}
.cs-fab{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,#1d5fb0,#2a74d0);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 6px 20px rgba(29,95,176,.4);border:none;transition:transform .15s}
.cs-fab:hover{transform:translateY(-2px)}
.cs-panel{position:absolute;right:0;bottom:62px;width:240px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 40px rgba(10,31,60,.18);padding:14px;display:none}
.cs-panel.open{display:block}
.cs-panel h4{font-size:14px;color:var(--ink);margin-bottom:10px}
.cs-panel a{display:flex;align-items:center;gap:9px;padding:9px 8px;border-radius:8px;font-size:13.5px;color:var(--ink);text-decoration:none}
.cs-panel a:hover{background:var(--bg-soft)}
.cs-panel a svg{flex:none}
.cs-panel .cs-tag{font-size:11.5px;color:var(--muted);margin-top:6px;line-height:1.5}

/* ---- 打印：只保留正文 ---- */
@media print{
  .site-header,.site-footer,.utility,.compare-bar,.cs-float,.btn,button,#vbAuthSlot{display:none !important}
  body{background:#fff}
  main,.section{padding:0 !important;margin:0 !important}
  .card,.card-pad{box-shadow:none !important;border:1px solid #ccc !important;break-inside:avoid}
  a{color:#000 !important;text-decoration:none}
}

.cs-fab.cs-top{background:linear-gradient(135deg,#475569,#64748b);box-shadow:0 6px 20px rgba(71,85,105,.4)}

/* Cookie 同意条 */
.cookie-bar{position:fixed;left:18px;bottom:18px;right:18px;z-index:120;display:flex;align-items:center;justify-content:space-between;gap:16px;background:#0a1f3c;color:#e3eefa;padding:12px 18px;border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.25);font-size:13.5px}
.cookie-bar .cookie-ok{background:#f2a33c;color:#0a1f3c;border:none;padding:7px 18px;border-radius:6px;cursor:pointer;font-weight:600;white-space:nowrap}
.cookie-bar .cookie-ok:hover{background:#e0952a}
@media(max-width:640px){.cookie-bar{flex-direction:column;align-items:stretch;text-align:center}}

/* ============ 移动端深度适配 ============ */
@media (max-width:768px){
  /* 表格横向滚动 */
  .tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .tbl{min-width:600px}
  
  /* 按钮大小适配 */
  .btn{padding:10px 16px;font-size:14px}
  .btn-sm{padding:8px 12px;font-size:13px}
  .btn-lg{padding:12px 20px;font-size:15px}
  
  /* 字体大小调整 */
  body{font-size:14px}
  h1{font-size:24px}
  h2{font-size:20px}
  h3{font-size:18px}
  h4{font-size:16px}
  
  /* 卡片内边距 */
  .card,.card-pad{padding:14px}
  
  /* 页面头部 */
  .page-head{padding:30px 0}
  .page-head h1{font-size:24px}
  
  /* 区块间距 */
  .section{padding:30px 0}
  .sec-head{margin-bottom:20px}
  
  /* 表单元素 */
  .inp{padding:10px 12px;font-size:14px}
  
  /* 分页 */
  .pager{gap:4px}
  .pager .btn{padding:8px 12px;font-size:13px}
  
  /* 下拉菜单 */
  .dropdown-menu{position:fixed;left:16px;right:16px;top:auto;bottom:80px;max-height:300px;overflow-y:auto}
  
  /* 模态框 */
  .modal{max-width:calc(100vw - 32px);padding:20px}
  
  /* 客服浮窗 */
  .cs-float{right:12px;bottom:70px}
  .cs-fab{width:46px;height:46px}
  .cs-panel{width:calc(100vw - 32px);right:-12px}
}

@media (max-width:480px){
  /* 更小屏幕 */
  .wrap{padding:0 12px}
  
  /* 英雄区 */
  .hero h1{font-size:22px}
  .hero p.lead{font-size:14px}
  .hero-stats{gap:14px}
  .hero-stat b{font-size:24px}
  
  /* 按钮 */
  .btn-lg{padding:10px 16px;font-size:14px}
  
  /* 表格 */
  .tbl{min-width:500px}
  
  /* 卡片 */
  .card,.card-pad{padding:12px}
  
  /* 字体 */
  body{font-size:13.5px}
  h1{font-size:22px}
  h2{font-size:18px}
}

/* ============ 移动端深度适配增强 ============ */
@media (max-width: 768px) {
  /* 产品列表表格优化 */
  .compare-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: 8px;
  }
  
  .tbl.fixed {
    min-width: 600px;
    font-size: 12px;
  }
  
  .tbl.fixed th,
  .tbl.fixed td {
    padding: 8px 6px;
  }
  
  /* 产品详情页布局优化 */
  .detail-hero .wrap > div:first-child {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
  
  .detail-hero .btn {
    flex: 1;
    min-width: 120px;
  }
  
  /* 产品规格表格优化 */
  .spec-table {
    font-size: 13px;
  }
  
  .spec-table td {
    padding: 8px 10px;
  }
  
  /* 筛选条件优化 */
  .filter-section {
    margin-bottom: 12px;
  }
  
  .filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
  }
  
  .fchip {
    padding: 6px 12px;
    font-size: 12px;
  }
  
  /* 购物车页面优化 */
  .cart-item {
    flex-direction: column;
    gap: 12px;
  }
  
  .cart-item-info {
    width: 100%;
  }
  
  .cart-item-actions {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .cart-summary {
    position: sticky;
    bottom: 0;
    background: #fff;
    padding: 16px;
    border-top: 1px solid var(--line);
    box-shadow: 0 -4px 12px rgba(0,0,0,0.1);
  }
  
  /* 产品卡片优化 */
  .product-card {
    padding: 12px;
  }
  
  .product-card .product-image {
    width: 60px;
    height: 60px;
  }
  
  .product-card .product-info h4 {
    font-size: 14px;
  }
  
  /* 搜索框优化 */
  .searchbox {
    width: 100% !important;
    max-width: 100% !important;
  }
  
  /* 导航栏优化 */
  .mainnav {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  
  .mainnav::-webkit-scrollbar {
    display: none;
  }
  
  .navlink {
    white-space: nowrap;
    padding: 8px 10px;
    font-size: 13px;
  }
  
  /* 回到顶部按钮优化 */
  .back-to-top {
    right: 12px !important;
    bottom: 80px !important;
    width: 40px !important;
    height: 40px !important;
  }
  
  /* 客服浮窗优化 */
  .cs-float {
    right: 12px !important;
    bottom: 140px !important;
  }
  
  /* 分页优化 */
  .pager {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .pager .btn {
    padding: 6px 10px;
    font-size: 12px;
  }
  
  /* 网格布局优化 */
  .grid.g2,
  .grid.g3,
  .grid.g4 {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }
  
  /* 行业卡片优化 */
  .industry-card {
    padding: 16px;
  }
  
  .industry-card h3 {
    font-size: 16px;
  }
  
  /* 文章卡片优化 */
  .article-card {
    padding: 14px;
  }
  
  .article-card h4 {
    font-size: 15px;
  }
}

@media (max-width: 480px) {
  /* 超小屏幕优化 */
  .wrap {
    padding: 0 10px;
  }
  
  /* 头部优化 */
  .site-header .wrap {
    padding-top: 10px;
    padding-bottom: 12px;
  }
  
  .logo-name b {
    font-size: 20px;
  }
  
  .logo-mark {
    width: 40px;
    height: 40px;
  }
  
  /* 英雄区优化 */
  .hero {
    padding: 20px 0 30px;
  }
  
  .hero h1 {
    font-size: 20px;
  }
  
  .hero p.lead {
    font-size: 13px;
  }
  
  .hero-stats {
    gap: 12px;
    margin-top: 16px;
  }
  
  .hero-stat b {
    font-size: 20px;
  }
  
  .hero-stat span {
    font-size: 11px;
  }
  
  /* 按钮优化 */
  .btn-lg {
    padding: 10px 14px;
    font-size: 13px;
  }
  
  .btn-md {
    padding: 8px 14px;
    font-size: 13px;
  }
  
  /* 区块优化 */
  .section {
    padding: 24px 0;
  }
  
  .sec-title {
    font-size: 18px;
  }
  
  .sec-kicker {
    font-size: 11px;
  }
  
  /* 产品规格表优化 */
  .spec-table {
    font-size: 12px;
  }
  
  .spec-table td {
    padding: 6px 8px;
  }
  
  /* 阶梯价格表优化 */
  .price-table {
    font-size: 12px;
  }
  
  /* 底部优化 */
  .site-footer {
    padding: 30px 0 20px;
  }
  
  .foot-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 20px !important;
  }
  
  .foot-brand {
    grid-column: 1 / -1;
  }
}

/* 横屏模式优化 */
@media (max-width: 900px) and (orientation: landscape) {
  .hero {
    padding: 20px 0;
  }
  
  .hero .wrap {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .hero-visual {
    min-height: 200px;
  }
}

/* ============ 回到顶部按钮 ============ */
.back-to-top {
  position: fixed;
  right: 18px;
  bottom: 150px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1d5fb0, #2a74d0);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(29,95,176,.4);
  border: none;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 90;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-2px);
}

/* ============ 滚动进度条 ============ */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, #f2a33c, #e0861a);
  z-index: 999;
  width: 0%;
  transition: width 0.1s;
}

/* ============ 页面加载动画 ============ */
.page-loader {
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  transition: opacity 0.3s;
}

.page-loader.hidden {
  opacity: 0;
  pointer-events: none;
}

.loader-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid #e3eefa;
  border-top-color: #1d5fb0;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============ 搜索高亮 ============ */
.search-highlight {
  background: #fff3d6;
  padding: 1px 2px;
  border-radius: 2px;
}

/* ============ 筛选条件标签 ============ */
.filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.filter-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--blue-50);
  border: 1px solid var(--blue-200);
  border-radius: 20px;
  font-size: 12px;
  color: var(--blue-700);
}

.filter-tag .remove {
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s;
}

.filter-tag .remove:hover {
  opacity: 1;
}

/* ============ 相关产品推荐 ============ */
.related-products {
  margin-top: 30px;
}

.related-products .section-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--ink);
}

/* ============ 产品分享按钮 ============ */
.share-buttons {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.share-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: #fff;
  cursor: pointer;
  transition: all 0.2s;
}

.share-btn:hover {
  background: var(--blue-50);
  border-color: var(--blue-400);
}

/* P2-7: 移动端导航栏滑动视觉提示 */
.mainnav {
  position: relative;
}
.mainnav::after {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 40px;
  background: linear-gradient(to right, transparent, var(--bg, #fff));
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}
@media (max-width: 768px) {
  .mainnav {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .mainnav::-webkit-scrollbar {
    display: none;
  }
  .mainnav::after {
    opacity: 1;
  }
}

/* P2-7: 加载骨架屏 */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: 8px;
}
@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.skeleton-card {
  height: 120px;
  margin-bottom: 14px;
}

/* P2-7: 暗模式支持 */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1620;
    --bg-soft: #1a2332;
    --ink: #e8edf5;
    --text: #c5cdd9;
    --muted: #8a94a6;
    --line: #2a3548;
    --line-soft: #1f2a3d;
  }
  .site-header, .site-footer {
    background: var(--bg-soft);
  }
  .panel, .card {
    background: var(--bg-soft);
  }
}

/* P0-2: 移动端按钮点击区域优化 */
@media (max-width: 768px) {
  .btn {
    min-height: 44px;
    padding: 12px 20px;
    font-size: 15px;
  }
  .btn-sm {
    min-height: 36px;
    padding: 8px 14px;
  }
  .inp {
    min-height: 44px;
  }
}

/* P1-5: iPhone 安全区域适配 */
@supports (padding: max(0px)) {
  body {
    padding-left: max(0px, env(safe-area-inset-left));
    padding-right: max(0px, env(safe-area-inset-right));
  }
  .site-footer {
    padding-bottom: max(0px, env(safe-area-inset-bottom));
  }
}