/* ==========================================================================
   桐灼GEO 2026 全站内页样式 · 明亮产品（V3 主题 B）
   依赖 v3.css 的 tokens 与 header/footer
   ========================================================================== */

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
::selection{background:rgba(43,75,255,.18)}
.shell{width:min(1240px,calc(100% - 48px));margin:0 auto}
.skip-link{position:fixed;left:16px;top:-80px;z-index:200;padding:10px 14px;border-radius:8px;background:var(--brand);color:#fff;font-weight:700}
.skip-link:focus{top:14px}
h1,h2,h3{text-wrap:balance}

/* ---------- 页头（内页） ---------- */
.page-hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#eef4ff 0%,#f8fbff 70%,#fff 100%);border-bottom:1px solid var(--line);padding:76px 0 56px}
.page-hero::before{content:"";position:absolute;right:-120px;top:-180px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(43,75,255,.14),transparent 70%);filter:blur(20px)}
.page-hero .shell{position:relative}
.page-hero h1{margin:18px 0 0;font-size:clamp(34px,3.8vw,50px);line-height:1.2;letter-spacing:-.02em;font-weight:800;max-width:980px}
.page-hero p{max-width:760px;margin:18px 0 0;font-size:15.5px;line-height:1.9;color:var(--muted)}
.page-hero .actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.page-hero .page-index{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:26px;font-size:12.5px;color:var(--muted)}
.page-hero .page-index a{border-bottom:1px solid #c9d3ea;padding-bottom:2px}
.page-hero .page-index a:hover{color:var(--brand);border-color:var(--brand)}
.hero-kicker{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-family:var(--mono);font-size:12px;color:var(--muted)}
.hero-kicker b{color:var(--brand);font-weight:600}
.hero-kicker span{display:inline-flex;align-items:center;gap:8px}
.hero-kicker span+span::before{content:"·";color:#b6c2de}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:7px;align-items:center;font-family:var(--mono);font-size:11px;color:var(--muted);margin-bottom:16px}
.breadcrumbs a:hover{color:var(--brand)}
.breadcrumbs .sep{color:#c3cde3}

/* ---------- 通用区块 ---------- */
.section{padding:92px 0;background:#fff}
.section.tight{padding:64px 0}
.section.paper2,.section.soft{background:var(--soft)}
.section.sheet{background:#fff}
.section.ink{background:linear-gradient(160deg,#070d24,#0b1a44 60%,#102866);color:#fff}
.section.rule-top{border-top:1px solid var(--line)}
.sec-head{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(300px,.75fr);gap:60px;align-items:end;margin-bottom:46px}
.sec-label{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:11.5px;letter-spacing:.05em;color:var(--brand);font-weight:500}
.sec-label::before{content:"";width:18px;height:2px;background:currentColor;border-radius:2px}
.sec-head h2{margin:12px 0 0;font-size:clamp(28px,3.2vw,40px);line-height:1.26;letter-spacing:-.02em;font-weight:800;max-width:780px}
.sec-head p{margin:0;font-size:14.5px;line-height:1.9;color:var(--muted)}
.ink .sec-head h2{color:#fff}
.ink .sec-head p{color:rgba(226,234,255,.7)}
.ink .sec-label{color:#8fb2ff}
.lead{font-size:16px;line-height:1.95;color:#3b4566}
.muted{color:var(--muted)}
.small{font-size:13px;line-height:1.8}
.mono{font-family:var(--mono);font-size:12px}
.actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:50px;padding:0 22px;border-radius:12px;border:1px solid transparent;font-size:14.5px;font-weight:700;transition:transform .2s,box-shadow .2s,background .2s}
.btn:hover{transform:translateY(-2px)}
.btn.primary{background:var(--brand);color:#fff;box-shadow:0 14px 32px rgba(43,75,255,.28)}
.btn.primary:hover{background:#1e3be0}
.btn.ghost{border-color:#c9d3ea;background:#fff;color:var(--text)}
.btn.ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn.ink{background:var(--navy);color:#fff}
.btn.blue{background:var(--brand);color:#fff}
.btn.outline{border-color:var(--brand);color:var(--brand)}
.btn .arrow{font-family:var(--mono);font-size:14px}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:13px;font-weight:700}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- 卡片网格 ---------- */
.infra{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.infra-item{display:grid;grid-template-columns:46px 1fr;gap:16px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s}
.infra-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.infra-item .no{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,#2b4bff,#00a6d6);color:#fff;font-family:var(--mono);font-size:11px;font-weight:600;box-shadow:0 8px 18px rgba(43,75,255,.22)}
.infra-item h3{margin:0;font-size:17px;font-weight:700}
.infra-item p{margin:7px 0 0;font-size:13px;line-height:1.8;color:var(--muted)}
.infra-item .out{display:inline-block;margin-top:10px;font-size:12px;color:var(--brand);font-weight:600}
.infra-item .out a{color:var(--brand)}

.chain{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:var(--shadow-sm)}
.chain-row{display:grid;grid-template-columns:56px minmax(0,1.1fr) minmax(0,1.4fr) minmax(0,1.3fr);gap:22px;align-items:start;padding:22px 26px;border-bottom:1px solid var(--line)}
.chain-row:last-child{border-bottom:0}
.chain-row .idx{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:#eef2ff;color:var(--brand);font-family:var(--mono);font-size:11px;font-weight:600}
.chain-row h3{margin:0;font-size:17px;font-weight:700}
.chain-row h3 small{display:block;margin-top:2px;font-family:var(--mono);font-size:10px;font-weight:400;color:var(--muted);letter-spacing:.04em}
.chain-row p{margin:0;font-size:13px;line-height:1.8;color:var(--muted)}
.chain-row .do{font-size:13px;line-height:1.8;color:#3b4566}
.chain-row .do b{display:block;margin-bottom:4px;font-family:var(--mono);font-size:10px;letter-spacing:.05em;color:var(--brand);font-weight:500}
.chain-foot{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.55fr);gap:48px;margin-top:24px}
.margin-note{padding:18px 20px;border-left:3px solid var(--brand);border-radius:0 12px 12px 0;background:#f4f7ff;font-size:13px;line-height:1.85;color:var(--muted)}
.margin-note b{display:block;margin-bottom:5px;font-family:var(--mono);font-size:10.5px;letter-spacing:.05em;color:var(--brand);font-weight:500}

/* ---------- 案例 ---------- */
.case-record{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);gap:40px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px;box-shadow:var(--shadow-sm);margin-bottom:18px;position:relative;overflow:hidden}
.case-record::before{content:"";position:absolute;left:0;top:0;right:0;height:4px;background:linear-gradient(90deg,#2b4bff,#6fe7ff)}
.case-top{display:flex;flex-wrap:wrap;gap:10px 16px;font-family:var(--mono);font-size:11px;color:var(--muted)}
.case-top b{color:var(--brand);font-weight:600}
.case-record h3{margin:12px 0 0;font-size:26px;line-height:1.35;font-weight:800;letter-spacing:-.01em}
.case-record h3 span{color:var(--muted)}
.case-record .case-lead{margin:14px 0 0;font-size:14px;line-height:1.9;color:#3b4566}
.case-did{display:grid;grid-template-columns:1fr 1fr;gap:14px 26px;margin-top:20px}
.case-did div{font-size:12.5px;line-height:1.8;color:var(--muted)}
.case-did b{display:block;margin-bottom:3px;color:var(--text);font-weight:700}
.case-metrics{border-left:1px solid var(--line);padding-left:26px;display:flex;flex-direction:column;justify-content:center}
.metric{padding:14px 0;border-bottom:1px solid var(--line)}
.metric:first-child{padding-top:0}
.metric:last-child{border-bottom:0}
.metric b{display:block;font-size:28px;line-height:1.1;font-weight:800;letter-spacing:-.02em;color:var(--brand)}
.metric b small{font-size:12px;font-weight:700;margin-left:3px}
.metric span{display:block;margin-top:4px;font-size:11.5px;color:var(--muted);line-height:1.6}
.metric.neg b{font-size:12px;font-weight:700;line-height:1.7;color:#c8401f}
.case-link{margin-top:16px}

.case-detail{background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px;box-shadow:var(--shadow-sm);margin-bottom:18px}
.case-detail-head{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(300px,.7fr);gap:40px;align-items:start}
.case-detail h2{margin:12px 0 0;font-size:clamp(26px,2.7vw,36px);line-height:1.32;font-weight:800;letter-spacing:-.01em}
.case-detail .sub{margin:9px 0 0;font-family:var(--mono);font-size:11.5px;color:var(--muted)}
.case-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}
.case-step{background:#f7f9ff;border:1px solid var(--line);border-radius:16px;padding:20px}
.case-step b{font-family:var(--mono);font-size:10px;color:var(--brand);font-weight:500;letter-spacing:.04em}
.case-step h4{margin:8px 0 0;font-size:15px;font-weight:700}
.case-step p{margin:6px 0 0;font-size:12.5px;line-height:1.8;color:var(--muted)}

/* ---------- 表格 / 记录 ---------- */
.result-table{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm)}
.result-row{display:grid;grid-template-columns:170px 110px minmax(0,1.1fr) minmax(0,1fr);gap:22px;padding:18px 22px;border-bottom:1px solid var(--line);align-items:start}
.result-row:last-child{border-bottom:0}
.result-row.head{padding:12px 22px;font-family:var(--mono);font-size:10.5px;letter-spacing:.05em;color:var(--muted);background:#f7f9ff}
.result-row .client{font-size:14px;font-weight:700}
.result-row .client small{display:block;margin-top:2px;font-family:var(--mono);font-size:10px;font-weight:400;color:var(--muted)}
.result-row .sector{font-size:12px;color:var(--muted);padding-top:2px}
.result-row .did,.result-row .out{font-size:12.5px;line-height:1.8;color:var(--muted)}
.result-row .out b{color:var(--text)}
.log{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm)}
.log-row{display:grid;grid-template-columns:110px 1fr;gap:22px;padding:16px 22px;border-bottom:1px solid var(--line);font-size:13px;line-height:1.8}
.log-row:last-child{border-bottom:0}
.log-row time{display:inline-block;justify-self:start;font-family:var(--mono);font-size:10px;line-height:1.5;color:var(--brand);background:#eef2ff;border-radius:5px;padding:2px 7px;margin-top:1px;white-space:nowrap}
.log-row b{color:var(--text)}
.log-row span{color:var(--muted)}

.data-table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-sm)}
.data-table{width:100%;border-collapse:collapse;font-size:13px;line-height:1.8}
.data-table th,.data-table td{padding:14px 18px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.data-table th{font-family:var(--mono);font-size:10.5px;font-weight:500;color:var(--muted);letter-spacing:.04em;background:#f7f9ff;white-space:nowrap}
.data-table td:first-child{font-weight:700;white-space:nowrap}
.data-table tr:last-child td{border-bottom:0}
.data-table tr:hover td{background:rgba(43,75,255,.03)}

/* ---------- 工具 / 报告 ---------- */
.tool-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(360px,1.1fr);gap:56px;align-items:start}
.tool-copy h2{margin:12px 0 0;font-size:clamp(28px,3vw,38px);line-height:1.3;font-weight:800}
.tool-copy p{margin:16px 0 0;font-size:14px;line-height:1.9;color:var(--muted)}
.platforms{display:flex;flex-wrap:wrap;gap:7px;margin-top:20px}
.platforms span{padding:5px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;font-size:11.5px;color:#3b4566}
.report{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--shadow-sm)}
.report-head{display:flex;justify-content:space-between;gap:12px;padding-bottom:12px;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:11px;color:var(--muted)}
.report-head b{color:var(--brand);font-weight:600}
.report-row{display:grid;grid-template-columns:1fr 100px;gap:18px;padding:13px 0;border-bottom:1px solid var(--line);font-size:13px;color:#3b4566}
.report-row:last-of-type{border-bottom:0}
.report-row b{text-align:right;color:var(--text);font-weight:700}
.report-note{margin-top:12px;font-size:11px;line-height:1.7;color:var(--muted)}

/* ---------- 方法 / 边界 ---------- */
.method-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.method-step{position:relative;padding:28px 0 0;border-top:2px solid var(--line)}
.method-step .no{position:absolute;top:-14px;left:0;display:inline-flex;align-items:center;justify-content:center;min-width:64px;height:28px;padding:0 10px;border-radius:999px;background:var(--brand);color:#fff;font-family:var(--mono);font-size:9.5px;font-weight:600;line-height:1;white-space:nowrap;letter-spacing:.05em;box-shadow:0 8px 18px rgba(43,75,255,.26)}
.method-step h3{margin:8px 0 0;font-size:18px;font-weight:700}
.method-step p{margin:7px 0 0;font-size:12.5px;line-height:1.8;color:var(--muted)}
.boundaries{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:34px}
.boundary{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow-sm)}
.boundary b{display:block;font-size:14px;font-weight:700;color:#c8401f}
.boundary span{display:block;margin-top:6px;font-size:12.5px;line-height:1.8;color:var(--muted)}

/* ---------- 文章列表 ---------- */
.post-list{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm)}
.post-row{display:grid;grid-template-columns:150px 1fr 24px;gap:24px;align-items:start;padding:18px 22px;border-bottom:1px solid var(--line);transition:background .2s}
.post-row:last-child{border-bottom:0}
.post-row:hover{background:#f7f9ff}
.post-row time{font-family:var(--mono);font-size:10.5px;color:var(--muted);padding-top:2px}
.post-row h3{margin:0;font-size:17px;line-height:1.5;font-weight:700}
.post-row p{margin:5px 0 0;font-size:12.5px;line-height:1.75;color:var(--muted)}
.post-row .arrow{justify-self:end;color:var(--brand);font-family:var(--mono);transition:transform .2s}
.post-row:hover .arrow{transform:translateX(4px)}

/* ---------- CTA ---------- */
.cta-band{position:relative;overflow:hidden;background:linear-gradient(120deg,rgba(43,75,255,.96),rgba(91,59,255,.9) 58%,rgba(0,166,214,.9)),url(/assets/img/city-night.webp) center/cover no-repeat;color:#fff;padding:76px 0}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(255,255,255,.18),transparent 45%)}
.cta-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(300px,.8fr);gap:56px;align-items:center}
.cta-band h2{margin:0;font-size:clamp(28px,3.2vw,42px);line-height:1.3;font-weight:800;color:#fff}
.cta-band p{margin:14px 0 0;max-width:640px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.8)}
.cta-side{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.cta-band .btn{background:#fff;border-color:#fff;color:var(--navy)}
.cta-band .btn:hover{background:var(--navy);border-color:var(--navy);color:#fff}
.cta-band .btn.outline{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.cta-band .btn.outline:hover{background:rgba(255,255,255,.12)}
.cta-band .mono{color:rgba(255,255,255,.7)}

/* ---------- 分栏 / 正文 ---------- */
.split{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(300px,.6fr);gap:48px;align-items:start}
.side{background:#f7f9ff;border:1px solid var(--line);border-radius:20px;padding:24px}
.side dl{margin:0}
.side dt{font-family:var(--mono);font-size:10px;letter-spacing:.05em;color:var(--brand);margin-top:16px}
.side dt:first-child{margin-top:0}
.side dd{margin:4px 0 0;font-size:13px;line-height:1.8;color:#3b4566}
.prose h2{margin:44px 0 0;font-size:26px;line-height:1.4;font-weight:800;letter-spacing:-.01em}
.prose h3{margin:30px 0 0;font-size:18px;line-height:1.5;font-weight:700}
.prose p{margin:14px 0 0;font-size:15px;line-height:1.95;color:#3b4566}
.prose ul,.prose ol{margin:14px 0 0;padding-left:1.25em;color:#3b4566;font-size:14.5px;line-height:1.95}
.prose li{margin:6px 0}
.prose blockquote{margin:24px 0 0;padding:18px 22px;border-left:3px solid var(--brand);border-radius:0 12px 12px 0;background:#f4f7ff;font-size:14.5px;line-height:1.9;color:#3b4566}
.prose .note{font-size:12.5px;color:var(--muted)}
.prose a{color:var(--brand)}

/* ---------- 服务页 ---------- */
.service-list{display:flex;flex-direction:column;gap:18px}
.service-block{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:48px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}
.service-block::before{content:"";position:absolute;left:0;top:0;right:0;height:4px;background:linear-gradient(90deg,#2b4bff,#6fe7ff)}
.service-block .service-title h2{margin:10px 0 0;font-size:28px;line-height:1.35;font-weight:800;letter-spacing:-.01em}
.service-block .service-title p{margin:10px 0 0;font-size:13px;line-height:1.85;color:var(--muted)}
.service-block .service-body{display:grid;grid-template-columns:1fr 1fr;gap:16px 26px}
.service-block .service-body div{font-size:12.5px;line-height:1.8;color:var(--muted)}
.service-block .service-body b{display:block;margin-bottom:3px;color:var(--text);font-weight:700}
.service-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.service-tags span{font-family:var(--mono);font-size:10px;padding:4px 8px;border:1px solid var(--line);border-radius:6px;color:var(--muted);background:#fff}

.service-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.service-card{position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.service-card::before{content:"";position:absolute;left:0;top:0;right:0;height:4px;background:linear-gradient(90deg,#2b4bff,#6fe7ff)}
.service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.service-card .no{font-family:var(--mono);font-size:10.5px;color:var(--brand);letter-spacing:.05em}
.service-card h3{margin:10px 0 0;font-size:22px;font-weight:800;letter-spacing:-.01em}
.service-card p{margin:8px 0 0;font-size:13px;line-height:1.85;color:var(--muted);flex:1}
.service-card ul{margin:14px 0 0;padding-left:1.1em;font-size:12px;line-height:1.95;color:#3b4566}
.service-card .text-link{margin-top:16px}

/* ---------- FAQ ---------- */
.faq{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{width:100%;display:flex;justify-content:space-between;gap:22px;align-items:baseline;padding:17px 22px;background:none;border:0;text-align:left;font-size:14.5px;font-weight:700}
.faq-q::after{content:"+";font-family:var(--mono);font-size:15px;color:var(--brand);flex:none}
.faq-item.open .faq-q::after{content:"−"}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:460px}
.faq-a p{margin:0 0 18px;padding:0 22px;font-size:13px;line-height:1.9;color:var(--muted);max-width:900px}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:12px;color:var(--muted)}
.field input,.field select,.field textarea{width:100%;padding:12px 13px;background:#fff;border:1px solid var(--line);border-radius:10px;font-size:14px;outline:none}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,75,255,.12)}
.field textarea{min-height:120px;resize:vertical}
.form-status{margin:10px 0 0;font-size:12px;color:var(--muted)}
.contact-facts{background:#f7f9ff;border:1px solid var(--line);border-radius:20px;padding:22px}
.contact-facts div{padding:14px 0;border-bottom:1px solid var(--line)}
.contact-facts div:first-child{padding-top:0}
.contact-facts div:last-child{border-bottom:0;padding-bottom:0}
.contact-facts small{display:block;font-family:var(--mono);font-size:10px;color:var(--brand);letter-spacing:.05em}
.contact-facts strong{display:block;margin-top:4px;font-size:13.5px;font-weight:600}
.contact-facts a:hover{color:var(--brand)}

/* ---------- 文章 ---------- */
.article-header{position:relative;overflow:hidden;background:linear-gradient(180deg,#eef4ff 0%,#f8fbff 70%,#fff 100%);border-bottom:1px solid var(--line);padding:60px 0 42px}
.article-header::before{content:"";position:absolute;right:-120px;top:-180px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(43,75,255,.13),transparent 70%);filter:blur(20px)}
.article-header .shell{position:relative}
.article-header .meta{display:flex;flex-wrap:wrap;gap:10px 18px;font-family:var(--mono);font-size:11px;color:var(--muted)}
.article-header h1{margin:16px 0 0;font-size:clamp(30px,3.2vw,42px);line-height:1.3;font-weight:800;letter-spacing:-.02em;max-width:920px}
.article-header .dek{margin:16px 0 0;font-size:15px;line-height:1.9;color:var(--muted);max-width:780px}
.article-body{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(260px,.5fr);gap:48px;padding:44px 0 72px;align-items:start}
.article-aside{background:#f7f9ff;border:1px solid var(--line);border-radius:20px;padding:22px;position:sticky;top:96px}
.article-aside h4{margin:0 0 8px;font-family:var(--mono);font-size:10px;color:var(--brand);letter-spacing:.05em;font-weight:500}
.article-aside h4:not(:first-child){margin-top:18px}
.article-aside p{margin:0 0 12px;font-size:12.5px;line-height:1.8;color:var(--muted)}
.article-aside a{color:var(--brand)}

/* ---------- 关于 / 团队 / 历程 ---------- */
.timeline{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm)}
.timeline-row{display:grid;grid-template-columns:130px 1fr;gap:32px;padding:22px 24px;border-bottom:1px solid var(--line)}
.timeline-row:last-child{border-bottom:0}
.timeline-row time{font-family:var(--mono);font-size:11.5px;color:var(--brand);padding-top:2px}
.timeline-row h3{margin:0;font-size:16px;font-weight:700}
.timeline-row p{margin:6px 0 0;font-size:12.5px;line-height:1.8;color:var(--muted)}
.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.team-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:var(--shadow-sm)}
.team-card b{display:block;font-family:var(--mono);font-size:10px;color:var(--brand);letter-spacing:.05em}
.team-card h3{margin:8px 0 0;font-size:17px;font-weight:700}
.team-card p{margin:7px 0 0;font-size:12.5px;line-height:1.8;color:var(--muted)}
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.feature{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:var(--shadow-sm)}
.feature b{display:block;font-family:var(--mono);font-size:10px;color:var(--brand);letter-spacing:.05em}
.feature h3{margin:8px 0 0;font-size:17px;font-weight:700}
.feature p{margin:7px 0 0;font-size:12.5px;line-height:1.8;color:var(--muted)}

/* ---------- 资源 / 术语 / 法务 ---------- */
.resource-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.resource-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;display:flex;flex-direction:column;min-height:180px;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s}
.resource-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.resource-card b{font-family:var(--mono);font-size:10px;color:var(--brand);letter-spacing:.05em;font-weight:500}
.resource-card h3{margin:10px 0 0;font-size:19px;font-weight:800;letter-spacing:-.01em}
.resource-card p{margin:8px 0 0;font-size:12.5px;line-height:1.8;color:var(--muted);flex:1}
.resource-card .text-link{margin-top:14px}
.glossary{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm)}
.glossary-item{display:grid;grid-template-columns:180px 1fr;gap:32px;padding:18px 24px;border-bottom:1px solid var(--line)}
.glossary-item:last-child{border-bottom:0}
.glossary-item dt{font-size:14px;font-weight:700}
.glossary-item dt small{display:block;margin-top:2px;font-family:var(--mono);font-size:10px;font-weight:400;color:var(--muted)}
.glossary-item dd{margin:0;font-size:13px;line-height:1.85;color:#3b4566}
.legal-body{max-width:820px}
.legal-body h2{margin:36px 0 0;font-size:22px;font-weight:800}
.legal-body p,.legal-body li{font-size:14px;line-height:1.95;color:#3b4566}
.legal-body ul{padding-left:1.25em}
.lost{min-height:54vh;display:flex;align-items:center}
.lost h1{margin:0;font-size:clamp(40px,6vw,76px);line-height:1.1;font-weight:800;letter-spacing:-.02em}
.lost p{margin:18px 0 0;max-width:560px;font-size:14.5px;line-height:1.9;color:var(--muted)}
.lost .actions{margin-top:24px}
.lost-links{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:26px;font-size:13px}
.lost-links a{color:var(--brand)}
.anchor-list{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:12.5px;color:var(--muted);margin-top:20px}
.anchor-list a{border-bottom:1px solid #c9d3ea;padding-bottom:2px}
.anchor-list a:hover{color:var(--brand);border-color:var(--brand)}
.company-quote{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(280px,.6fr);gap:40px;margin-top:34px}
.company-quote blockquote{margin:0;font-size:clamp(22px,2.4vw,30px);line-height:1.55;font-weight:800}
.company-quote blockquote span{color:var(--brand)}
.company-quote cite{display:block;margin-top:14px;font-style:normal;font-size:12px;color:var(--muted)}

/* ---------- geocalc ---------- */
.geocalc{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm)}
.geocalc-grid{display:grid;grid-template-columns:minmax(300px,.6fr) minmax(0,1.4fr)}
.geocalc-form{padding:26px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:16px}
.geocalc-form label{display:flex;flex-direction:column;gap:5px;font-size:12.5px;font-weight:600}
.geocalc-form label span{font-size:11px;font-weight:400;color:var(--muted)}
.geocalc-form input[type=number]{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:9px;background:#f7f9ff;font-family:var(--mono);font-size:14px;outline:none}
.geocalc-form input[type=number]:focus{border-color:var(--brand)}
.geocalc-check{flex-direction:row !important;align-items:center;gap:8px !important;font-weight:400 !important;font-size:12.5px;color:#3b4566}
.geocalc-check input{width:15px;height:15px;accent-color:var(--brand)}
.geocalc-result{padding:26px}
.geocalc-cards{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.geocalc-cards div{padding:16px 14px;border-right:1px solid var(--line)}
.geocalc-cards div:last-child{border-right:0}
.geocalc-cards b{display:block;font-size:20px;font-weight:800;color:var(--brand)}
.geocalc-cards span{display:block;margin-top:3px;font-size:10.5px;color:var(--muted)}
.geocalc-steps{margin:18px 0 0;padding-left:1.1em;font-size:12px;line-height:1.9;color:var(--muted)}
.geocalc-steps li{margin:4px 0}
.geocalc-note{margin:12px 0 0;font-size:11px;line-height:1.7;color:var(--muted)}
.geocalc-note a{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .page-hero{padding:56px 0 42px}
  .section{padding:70px 0}
  .sec-head,.split,.cta-grid,.tool-grid,.case-detail-head,.company-quote{grid-template-columns:1fr;gap:32px}
  .case-record{grid-template-columns:1fr;gap:24px}
  .case-metrics{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:18px;flex-direction:row;flex-wrap:wrap;gap:0 34px}
  .case-metrics .metric{flex:1 1 150px}
  .case-metrics .metric:first-child{padding-top:14px}
  .infra,.feature-grid,.resource-grid,.team-grid,.service-cards{grid-template-columns:1fr 1fr}
  .method-grid{grid-template-columns:1fr 1fr}
  .chain-row{grid-template-columns:44px 1fr;gap:12px}
  .chain-row p,.chain-row .do{grid-column:2}
  .article-body{grid-template-columns:1fr;gap:32px}
  .article-aside{position:static}
  .service-block{grid-template-columns:1fr;gap:24px}
  .geocalc-grid{grid-template-columns:1fr}
  .geocalc-form{border-right:0;border-bottom:1px solid var(--line)}
}
@media (max-width:760px){
  .shell{width:calc(100% - 36px)}
  .section{padding:56px 0}
  .section.tight{padding:44px 0}
  .page-hero{padding:44px 0 34px}
  .page-hero h1{font-size:clamp(28px,8vw,38px)}
  .infra,.feature-grid,.resource-grid,.team-grid,.service-cards,.method-grid,.boundaries,.case-did,.case-steps,.form-grid,.service-block .service-body{grid-template-columns:1fr}
  .result-row{grid-template-columns:1fr 1fr;gap:8px 18px}
  .result-row.head{display:none}
  .result-row .did,.result-row .out{grid-column:1/-1}
  .post-row{grid-template-columns:1fr 22px;gap:6px}
  .post-row time{grid-column:1/-1}
  .timeline-row,.glossary-item{grid-template-columns:1fr;gap:8px}
  .geocalc-cards{grid-template-columns:1fr 1fr}
  .geocalc-cards div:nth-child(2){border-right:0}
  .geocalc-cards div:nth-child(3),.geocalc-cards div:nth-child(4){border-top:1px solid var(--line)}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none !important;animation:none !important}
}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px}

/* ---------- 案例指标条 ---------- */
.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm)}
.proof-cell{padding:22px 24px;border-right:1px solid var(--line)}
.proof-cell:last-child{border-right:0}
.proof-cell b{display:block;font-size:clamp(24px,2.8vw,34px);line-height:1.1;font-weight:800;letter-spacing:-.02em;color:var(--brand)}
.proof-cell b small{font-size:12px;margin-left:3px;font-weight:700}
.proof-cell span{display:block;margin-top:5px;font-size:11.5px;color:var(--muted);line-height:1.6}
@media (max-width:760px){
  .proof-grid{grid-template-columns:1fr 1fr}
  .proof-cell:nth-child(2){border-right:0}
  .proof-cell:nth-child(3),.proof-cell:nth-child(4){border-top:1px solid var(--line)}
}

/* 内页与首页统一使用吸顶导航 */
body.theme-b .v3-header{position:sticky;top:0;z-index:100}

/* ---------- 案例四层读数表 ---------- */
.layer-table{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm)}
.layer-row{display:grid;grid-template-columns:84px minmax(180px,.8fr) minmax(0,1.2fr);gap:20px;padding:16px 20px;border-bottom:1px solid var(--line);align-items:start}
.layer-row:last-child{border-bottom:0}
.layer-label{font-size:13px;font-weight:700;color:var(--text);padding-top:1px}
.layer-value{font-size:14px;font-weight:700;color:var(--brand);line-height:1.7}
.layer-note{font-size:12.5px;line-height:1.8;color:var(--muted)}
@media (max-width:760px){
  .layer-row{grid-template-columns:1fr;gap:4px;padding:14px 16px}
  .layer-value{font-size:13.5px}
}

/* 侧栏内的信息列表不再重复画卡片 */
.side .contact-facts{background:transparent;border:0;border-radius:0;padding:0;box-shadow:none}

/* ---------- 2026-10-24 · 滚动动效层（轻量、无依赖、可降级） ---------- */
@supports (translate: 0 1px){
  @media (prefers-reduced-motion: no-preference){
    html.has-reveal .v3-metrics-grid > div,
    html.has-reveal .v3-section .v3-head,
    html.has-reveal .v3-feature,
    html.has-reveal .v3-card,
    html.has-reveal .v3-step,
    html.has-reveal .v3-product-copy,
    html.has-reveal .v3-product-visual,
    html.has-reveal .v3-network-copy,
    html.has-reveal .v3-network-visual,
    html.has-reveal .v3-case,
    html.has-reveal .v3-insight,
    html.has-reveal .v3-faq-item,
    html.has-reveal .v3-cta-grid > *,
    html.has-reveal .section .sec-head,
    html.has-reveal .infra-item,
    html.has-reveal .feature,
    html.has-reveal .method-step,
    html.has-reveal .service-card,
    html.has-reveal .case-record,
    html.has-reveal .post-row,
    html.has-reveal .resource-card,
    html.has-reveal .faq-item,
    html.has-reveal .team-card,
    html.has-reveal .timeline-row,
    html.has-reveal .data-table-wrap,
    html.has-reveal .glossary-item,
    html.has-reveal .chain-row,
    html.has-reveal .cta-grid > *,
    html.has-reveal .boundary,
    html.has-reveal .form-grid,
    html.has-reveal .proof-grid,
    html.has-reveal .layer-table,
    html.has-reveal .log-row,
    html.has-reveal .margin-note{
      opacity:.4;
      translate:0 10px;
      transition:opacity .45s cubic-bezier(.22,.61,.36,1),translate .45s cubic-bezier(.22,.61,.36,1);
    }
    html.has-reveal .is-visible.is-visible{opacity:1;translate:0 0}
  }
}

@media (prefers-reduced-motion: no-preference){
  .v3-hero-copy > .v3-eyebrow,
  .v3-hero-copy > h1,
  .v3-hero-copy > .v3-hero-lead,
  .v3-hero-copy > .v3-actions,
  .v3-hero-copy > .v3-trust{animation:heroIn .85s cubic-bezier(.22,.61,.36,1) both}
  .v3-hero-copy > h1{animation-delay:.06s}
  .v3-hero-copy > .v3-hero-lead{animation-delay:.12s}
  .v3-hero-copy > .v3-actions{animation-delay:.18s}
  .v3-hero-copy > .v3-trust{animation-delay:.24s}
  .v3-hero-visual{animation:heroVisualIn 1s cubic-bezier(.22,.61,.36,1) .1s both}

  .page-hero .breadcrumbs,
  .page-hero .hero-kicker,
  .page-hero h1,
  .page-hero > .shell > p,
  .page-hero .actions,
  .page-hero .page-index{animation:heroIn .8s cubic-bezier(.22,.61,.36,1) both}
  .page-hero .hero-kicker{animation-delay:.05s}
  .page-hero h1{animation-delay:.1s}
  .page-hero > .shell > p{animation-delay:.16s}
  .page-hero .actions{animation-delay:.22s}
  .page-hero .page-index{animation-delay:.28s}
}

@keyframes heroIn{from{opacity:.35;translate:0 18px}to{opacity:1;translate:0 0}}
@keyframes heroVisualIn{from{opacity:.35;translate:0 20px;transform:scale(.985)}to{opacity:1;translate:0 0;transform:scale(1)}}

/* ---------- 2026-10-24 · 手机版布局（不是把桌面压成一列） ---------- */
.v3-mobile-report{display:none}

@media (max-width:760px){
  .v3-shell,.shell{width:calc(100% - 32px)}
  .section{padding:40px 0}
  .section.tight{padding:30px 0}
  .v3-section,.v3-section.v3-soft{padding:44px 0}
  .v3-head,.v3-company-grid,.v3-product-grid,.v3-network-grid,.v3-cta-grid{gap:22px}
  .v3-head h2,.v3-product h2,.v3-network-grid h2,.v3-cta h2,.sec-head h2{font-size:26px;line-height:1.3}
  .v3-head p,.v3-network-copy,.sec-head p{font-size:13px;line-height:1.8}

  /* 首屏：收紧留白，答案卡变紧凑 */
  .v3-hero{padding:38px 0 48px}
  .v3-hero-grid{gap:26px}
  .v3-hero h1{margin-top:16px;font-size:clamp(34px,9.2vw,42px);line-height:1.18}
  .v3-hero-lead{margin-top:16px;font-size:14px;line-height:1.82}
  .v3-actions{margin-top:20px;gap:9px}
  .v3-actions .v3-btn{width:100%;min-height:46px;font-size:13.5px}
  .v3-trust{margin-top:16px;gap:7px 12px;font-size:10.5px}
  .v3-answer{padding:18px;border-radius:18px}
  .v3-answer-head{padding-bottom:10px;font-size:9.5px}
  .v3-answer-q{margin-top:13px;font-size:13px}
  .v3-answer-q b{width:20px;height:20px;font-size:9px}
  .v3-answer-text{margin-top:10px;font-size:12.8px;line-height:1.8}
  .v3-sources{margin-top:10px;padding-top:9px;gap:5px;font-size:10px}
  .v3-sources div{overflow-wrap:anywhere}
  .v3-answer-foot{gap:5px;margin-top:10px}
  .v3-badge-hot,.v3-badge{font-size:9px;padding:4px 7px}
  .v3-float,.v3-platforms{display:none}

  /* 指标：2×2 等高清点，不再大留白 */
  .v3-metrics{padding-bottom:0}
  .v3-metrics-grid{margin-top:16px;border:1px solid var(--line);border-radius:16px;overflow:hidden}
  .v3-metrics-grid div{padding:15px 14px;border-top:1px solid var(--line)}
  .v3-metrics-grid div:first-child{padding-left:14px}
  .v3-metrics-grid div:nth-child(1),.v3-metrics-grid div:nth-child(2){border-top:0}
  .v3-metrics-grid div:nth-child(2n){border-right:0}
  .v3-metrics-grid b{font-size:33px}
  .v3-metrics-grid b small{font-size:10.5px}
  .v3-metrics-grid span{margin-top:5px;font-size:10.5px;line-height:1.5}
  .v3-metrics-note{padding:9px 0 12px;font-size:10px;line-height:1.65}

  /* 公司：四张卡改成四行紧凑清单 */
  .v3-company-grid{display:block}
  .v3-feature-grid{display:block;border-top:1px solid var(--line)}
  .v3-feature{display:grid;grid-template-columns:40px 1fr;grid-template-areas:"icon title" "icon text";gap:4px 12px;align-items:start;padding:15px 0;border:0;border-bottom:1px solid var(--line);border-radius:0;box-shadow:none;background:transparent}
  .v3-feature:hover{transform:none;box-shadow:none}
  .v3-feature .v3-icon{grid-area:icon;align-self:start;width:36px;height:36px;border-radius:10px;font-size:10px}
  .v3-feature h3{grid-area:title;margin:0;font-size:15.5px}
  .v3-feature p{grid-area:text;margin:0;font-size:12.3px;line-height:1.72}
  .v3-photo{margin-top:16px;min-height:0;border-radius:16px}
  .v3-photo img{height:170px;object-fit:cover}
  .v3-photo figcaption{padding:7px 11px;font-size:10px}

  /* 首页服务：横向滑动卡片，下一张露出一角 */
  .v3-cards{display:flex;gap:12px;overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x mandatory;padding:0 16px 12px;margin:0 -16px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .v3-cards::-webkit-scrollbar{display:none}
  .v3-card{flex:0 0 84%;scroll-snap-align:start;padding:18px;border-radius:18px}
  .v3-card:hover{transform:none;box-shadow:var(--shadow-sm)}
  .v3-card-media{margin:-18px -18px 14px;border-radius:18px 18px 0 0;aspect-ratio:16/9}
  .v3-card-no{margin-top:10px;font-size:9.5px}
  .v3-card h3{margin-top:5px;font-size:20px}
  .v3-card p{margin-top:7px;font-size:12.3px;line-height:1.72}
  .v3-card ul{margin-top:11px;font-size:11.3px;line-height:1.7}
  .v3-card a{margin-top:13px;font-size:12px}

  /* 四步：2×2，而不是四行 */
  .v3-steps{grid-template-columns:1fr 1fr;gap:10px}
  .v3-step{padding:19px 13px 13px;border-top:2px solid var(--line);border-radius:0 0 12px 12px;background:#fff;border-left:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
  .v3-step b{top:-12px;width:24px;height:24px;font-size:9px;left:12px}
  .v3-step h3{margin-top:3px;font-size:15.5px}
  .v3-step p{margin-top:5px;font-size:11.3px;line-height:1.65}

  /* 见度：移动端用报告卡，不再缩小桌面浏览器截图 */
  .v3-product{padding:46px 0}
  .v3-product h2{font-size:29px}
  .v3-product-copy p{margin-top:13px;font-size:12.8px;line-height:1.78}
  .v3-product-metrics{gap:16px;margin-top:18px}
  .v3-product-metrics b{font-size:23px}
  .v3-product-metrics span{font-size:10px}
  .v3-product-copy .v3-btn{width:100%;min-height:45px;margin-top:18px}
  .v3-product-visual .v3-browser,.v3-product-visual .v3-product-badge{display:none}
  .v3-mobile-report{display:block;background:#fff;color:var(--text);border-radius:18px;padding:17px;box-shadow:0 24px 60px rgba(0,0,0,.3)}
  .v3-mobile-report-head{display:flex;justify-content:space-between;align-items:center;gap:10px;padding-bottom:9px;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:9px;color:var(--muted)}
  .v3-mobile-report-head .v3-live{font-size:10.5px;color:var(--text)}
  .v3-mobile-report-q{margin-top:11px;font-size:12.3px;font-weight:700}
  .v3-mobile-report-q b{display:inline-grid;place-items:center;width:18px;height:18px;margin-right:5px;border-radius:5px;background:#eef2ff;color:var(--brand);font-family:var(--mono);font-size:9px;font-weight:500}
  .v3-mobile-report p{margin:7px 0 0;font-size:12.3px;line-height:1.78;color:#3b4566}
  .v3-mobile-report p mark{padding:0 1px;background:linear-gradient(transparent 55%,#dbe3ff 55%);color:var(--text);font-weight:800}
  .v3-mobile-report-src{margin-top:9px;padding-top:8px;border-top:1px dashed var(--line);font-size:9.8px;line-height:1.6;color:var(--muted)}
  .v3-mobile-report-src b{color:var(--brand);font-family:var(--mono);font-weight:500}
  .v3-mobile-report-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:9px}
  .v3-mobile-report-tags span{padding:4px 7px;border:1px solid #dbe3ff;border-radius:999px;background:#f2f5ff;color:var(--brand);font-size:9px;font-weight:700}

  /* 城市网络：手机端不显示缩小的地图，改成 2×2 数据卡 */
  .v3-network-grid{gap:20px}
  .v3-network-visual{display:none}
  .v3-network-stats{gap:9px;margin-top:16px}
  .v3-network-stats>div{padding:13px 12px;border:1px solid var(--line);border-radius:13px;background:#fff}
  .v3-network-stats b{font-size:25px}
  .v3-network-stats span{font-size:10px;line-height:1.45}
  .v3-network-grid .v3-btn{width:100%;min-height:44px;margin-top:16px;font-size:12px}

  /* 首页案例 / 洞察：横向滑动，下一张露出 */
  .v3-cases,.v3-insights{display:flex;gap:12px;overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x mandatory;padding:0 16px 12px;margin:0 -16px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .v3-cases::-webkit-scrollbar,.v3-insights::-webkit-scrollbar{display:none}
  .v3-case{flex:0 0 86%;scroll-snap-align:start;padding:18px;border-radius:18px}
  .v3-case:hover{transform:none;box-shadow:var(--shadow-sm)}
  .v3-case-media{margin:-18px -18px 14px;border-radius:18px 18px 0 0;aspect-ratio:16/9}
  .v3-case-tag{font-size:10px;padding:4px 8px}
  .v3-case h3{margin-top:10px;font-size:20px}
  .v3-case p{margin-top:6px;font-size:12.2px;line-height:1.7}
  .v3-case-metrics{gap:8px;margin-top:13px;padding-top:12px}
  .v3-case-metrics b{font-size:18px}
  .v3-case-metrics span{font-size:9.5px;line-height:1.35}
  .v3-case>a{margin-top:11px;font-size:12px}
  .v3-insight{flex:0 0 82%;scroll-snap-align:start;padding:18px;border-radius:18px}
  .v3-insight:hover{transform:none;box-shadow:var(--shadow-sm)}
  .v3-insight time{font-size:10px}
  .v3-insight h3{margin-top:9px;font-size:16.5px;line-height:1.4}
  .v3-insight p{margin-top:6px;font-size:11.8px;line-height:1.68}
  .v3-insight span{margin-top:12px;font-size:11.5px}

  /* FAQ / CTA / 页脚 */
  .v3-faq{gap:9px}
  .v3-faq-item{padding:15px 16px;border-radius:14px}
  .v3-faq-item summary{font-size:13px;gap:10px}
  .v3-faq-item p{margin-top:8px;font-size:12px;line-height:1.75}
  .v3-cta-band{padding:46px 0}
  .v3-cta-grid{gap:18px}
  .v3-cta-grid h2{font-size:27px;line-height:1.28}
  .v3-cta-grid p{font-size:13px;line-height:1.78}
  .v3-cta-actions{gap:9px}
  .v3-cta-actions .v3-btn{width:100%;min-height:46px;font-size:13px}
  .v3-cta-phone{font-size:10.5px;line-height:1.6}
  .v3-footer-grid{grid-template-columns:1fr 1fr;gap:24px 18px;padding:36px 0 20px}
  .v3-footer-grid>div:first-child{grid-column:1/-1}
  .v3-footer-grid p{font-size:11px;line-height:1.7}
  .v3-footer-grid b{font-size:11.5px;margin-bottom:8px}
  .v3-footer-grid div a{font-size:11.5px;padding:3px 0}
  .v3-footer-bottom{flex-direction:column;align-items:flex-start;gap:5px;font-size:10px;line-height:1.6}

  /* 内页：hero、章节头与内容节奏 */
  .page-hero{padding:32px 0 26px}
  .page-hero h1{font-size:clamp(26px,7.8vw,34px);line-height:1.24}
  .page-hero .hero-kicker,.page-hero .breadcrumbs{font-size:10px}
  .page-hero>.shell>p{font-size:12.8px;line-height:1.78}
  .page-hero .page-index{gap:5px 11px;font-size:11px}
  .page-hero .actions{gap:8px}
  .page-hero .actions .btn{min-height:44px;font-size:12.5px}
  .sec-head h2{font-size:24px;line-height:1.3}
  .sec-head p{font-size:12.3px;line-height:1.72}
  .sec-label{font-size:10px}

  /* 内页四块能力：紧凑行，不再是四张卡 */
  .infra{display:block;border-top:1px solid var(--line)}
  .infra-item{display:grid;grid-template-columns:36px 1fr;gap:11px;padding:15px 0;border:0;border-bottom:1px solid var(--line);border-radius:0;box-shadow:none;background:transparent}
  .infra-item:hover{transform:none;box-shadow:none}
  .infra-item .no{width:32px;height:32px;font-size:9.5px}
  .infra-item h3{font-size:15px}
  .infra-item p{margin-top:5px;font-size:12px;line-height:1.7}
  .infra-item .out{margin-top:7px;font-size:11px}

  /* 内页卡片组：横向滑动 */
  .feature-grid,.service-cards,.team-grid{display:flex;gap:11px;overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x mandatory;padding:0 16px 12px;margin:0 -16px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .feature-grid::-webkit-scrollbar,.service-cards::-webkit-scrollbar,.team-grid::-webkit-scrollbar{display:none}
  .feature,.service-card,.team-card{flex:0 0 84%;scroll-snap-align:start;padding:18px;border-radius:18px}
  .feature:hover,.service-card:hover,.team-card:hover{transform:none;box-shadow:var(--shadow-sm)}
  .feature h3,.service-card h3,.team-card h3{font-size:16.5px}
  .feature p,.service-card p,.team-card p{font-size:12px;line-height:1.7}

  /* 内页三块原则：横向滑动，避免三张高卡把页面拉长 */
  .boundaries{display:flex;gap:11px;overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x mandatory;padding:0 16px 12px;margin:0 -16px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .boundaries::-webkit-scrollbar{display:none}
  .boundary{flex:0 0 82%;scroll-snap-align:start;padding:18px;border-radius:18px}
  .boundary b{font-size:13.5px}
  .boundary span{font-size:12px;line-height:1.72}

  /* 内页四步：2×2 */
  .method-grid{grid-template-columns:1fr 1fr;gap:10px}
  .method-step{padding:20px 12px 12px;border-top:2px solid var(--line);border-radius:0 0 12px 12px;background:#fff;border-left:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
  .method-step .no{top:-12px;left:12px;min-width:52px;height:24px;font-size:8px}
  .method-step h3{margin-top:3px;font-size:15px}
  .method-step p{margin-top:5px;font-size:11.2px;line-height:1.65}

  /* 资源中心：两列，减少一屏长度 */
  .resource-grid{grid-template-columns:1fr 1fr;gap:9px}
  .resource-card{padding:15px;min-height:0;border-radius:15px}
  .resource-card b{font-size:9px}
  .resource-card h3{margin-top:7px;font-size:14.5px;line-height:1.35}
  .resource-card p{margin-top:6px;font-size:11px;line-height:1.65}
  .resource-card .text-link{margin-top:9px;font-size:10.5px}

  /* 案例记录：读数三列，正文更紧凑 */
  .case-record{grid-template-columns:1fr;gap:14px;padding:19px;border-radius:18px;margin-bottom:12px}
  .case-record h3{font-size:20px;line-height:1.35}
  .case-record .case-lead{font-size:12.5px;line-height:1.75}
  .case-did{grid-template-columns:1fr 1fr;gap:9px 12px;margin-top:12px}
  .case-did div{font-size:11.2px;line-height:1.62}
  .case-metrics{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:13px;margin-top:0;display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
  .metric{padding:0;border-bottom:0;min-width:0}
  .metric b{font-size:19px}
  .metric span{font-size:9.5px;line-height:1.35}
  .case-link{margin-top:11px}
  .case-detail{padding:19px;border-radius:18px;margin-bottom:12px}
  .case-detail h2{font-size:24px}
  .case-steps{grid-template-columns:1fr;gap:8px;margin-top:18px}
  .case-step{padding:15px;border-radius:13px}
  .case-step h4{font-size:14px}
  .case-step p{font-size:11.5px;line-height:1.7}

  /* 表格：横向滚动，不压扁字号 */
  .data-table-wrap{-webkit-overflow-scrolling:touch;border-radius:15px;scrollbar-width:thin}
  .data-table{min-width:600px;font-size:11.8px}
  .data-table th,.data-table td{padding:10px 11px}
  .data-table th{font-size:9px}

  /* 文章 / 术语 / 时间线 / FAQ */
  .article-header h1{font-size:clamp(25px,7.4vw,32px);line-height:1.3}
  .article-header .dek{font-size:12.8px;line-height:1.75}
  .article-body{gap:22px}
  .article-aside{padding:17px;border-radius:15px}
  .glossary-item{grid-template-columns:1fr;gap:4px;padding:13px 15px}
  .glossary-item dt{font-size:13px}
  .glossary-item dd{font-size:12px;line-height:1.75}
  .timeline-row{grid-template-columns:1fr;gap:5px;padding:13px 0}
  .timeline-row h3{font-size:14.5px}
  .timeline-row p{font-size:11.8px;line-height:1.7}
  .post-row{padding:13px 15px;gap:4px}
  .post-row h3{font-size:15px;line-height:1.4}
  .post-row p{font-size:11.8px;line-height:1.65}
  .post-row time{font-size:10px}
  .faq-item{border-radius:14px}
  .faq-q{font-size:13px;padding:14px 15px}
  .faq-a p{font-size:12px;line-height:1.75;padding:0 15px 15px}

  /* 联系表单与 CTA */
  .form-grid{gap:13px}
  .form-grid .field input,.form-grid .field select,.form-grid .field textarea{font-size:14px}
  .cta-band{padding:38px 0}
  .cta-grid{gap:16px}
  .cta-grid h2{font-size:25px;line-height:1.3}
  .cta-grid p{font-size:12.5px;line-height:1.75}
  .cta-side{gap:8px}
  .cta-side .btn{width:100%;min-height:45px;font-size:12.5px}

  /* 页头按钮更紧凑 */
  .v3-cta{height:38px;padding:0 14px;font-size:12.5px}
  .v3-brand span{font-size:18px}
  .v3-brand img{width:28px;height:28px}
  /* 手机菜单：去掉 header 的 backdrop-filter，避免它成为 fixed 子元素的包含块 */
  body.theme-b .v3-header{backdrop-filter:none;-webkit-backdrop-filter:none}
  body.v3-menu-open{overflow:hidden}
  .v3-menu-open .v3-links{top:68px;bottom:0;z-index:120;display:grid;grid-template-columns:1fr 1fr;gap:0 18px;align-content:start;padding:16px 18px 40px;background:#fff;opacity:1;box-shadow:0 24px 60px rgba(15,29,74,.18)}
  .v3-menu-open .v3-links a{font-size:16px;padding:16px 0}
  .v3-menu-open .v3-links::after{content:"预约诊断 178-5203-0756 · 山东淄博";grid-column:1/-1;margin-top:26px;padding-top:18px;border-top:1px solid var(--line);font-family:var(--mono);font-size:10.5px;line-height:1.6;color:var(--muted)}
  .v3-menu-open .v3-burger{position:relative;z-index:130}
}
/* 2026-10-24 · FAQ 问题式标题（h3 包裹按钮，保持原交互） */
.faq-q-heading{margin:0;font:inherit;line-height:inherit}

/* 2026-10-24 · 下拉导航的手机菜单：单列分组，子项两列 */
@media (max-width:900px){
  .v3-menu-open .v3-links{display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;grid-template-columns:none;align-content:stretch}
  .v3-menu-open .v3-links>a,.v3-menu-open .v3-menu>a{display:flex;justify-content:space-between;align-items:center;font-size:16px;padding:15px 0;border-bottom:1px solid var(--line);opacity:1}
  .v3-menu-open .v3-menu{display:block;width:100%}
  .v3-menu-open .v3-sub{position:static;display:grid;grid-template-columns:1fr 1fr;gap:0 16px;min-width:0;padding:4px 0 10px;background:transparent;border:0;box-shadow:none;transform:none;opacity:1;visibility:visible;pointer-events:auto}
  .v3-menu-open .v3-sub a{padding:9px 0;border-bottom:1px dashed var(--line);font-size:13.5px;color:var(--muted);white-space:normal}
  .v3-menu-open .v3-caret{display:none}
  .v3-menu-open .v3-links::after{grid-column:auto;display:block}
}