/* ============ 知荐 GEO 官网主题 ============ */
/* 设计令牌沿用 知荐GEO官网全站.html：冷纸白底 + 深海军蓝墨 + AI 蓝 */

:root{
  --bg:#F5F8FC;          /* 冷纸白底 */
  --card:#FFFFFF;
  --ink:#0C1B33;         /* 深海军蓝墨 */
  --ink-2:#46536B;       /* 正文 */
  --ink-3:#7A879E;       /* 次级说明 */
  --brand:#2E6BFF;       /* AI 蓝 */
  --brand-deep:#1B4FD8;
  --sky:#E4EEFF;         /* 浅蓝底 */
  --sky-2:#F1F6FF;
  --green:#0FA968;       /* 引用绿 */
  --green-bg:#E3F7EE;
  --line:#DCE4F0;
  --line-soft:#E8EDF6;
  --dark:#0A1830;
  --dark-2:#0F2140;
  --radius:14px;
  --radius-s:10px;
  --shadow:0 10px 30px rgba(12,27,51,.08);
  --shadow-lg:0 26px 60px rgba(12,27,51,.14);
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","SimSun",serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);color:var(--ink);background:var(--bg);font-size:15.5px;line-height:1.75;-webkit-font-smoothing:antialiased}
img,svg{display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}
.container{max-width:1160px;margin:0 auto;padding:0 24px}
.container-narrow{max-width:860px}

/* ============ 通用组件 ============ */
.section{padding:92px 0}
.section--alt{background:var(--card)}
.section-head{text-align:center;max-width:640px;margin:0 auto 56px}
.section-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:500;color:var(--brand);background:var(--sky-2);border:1px solid #D3E3FF;padding:5px 14px;border-radius:999px;margin-bottom:18px}
.section-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.section-title{font-size:clamp(26px,3vw,36px);font-weight:900;letter-spacing:-.5px;line-height:1.3}
.section-sub{color:var(--ink-2);font-size:16px;margin-top:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:var(--radius-s);font-size:15px;font-weight:600;border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;white-space:nowrap}
.btn svg{width:16px;height:16px}
.btn-lg{padding:15px 32px;font-size:16px}
.btn-block{width:100%}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(46,107,255,.32)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:0 12px 26px rgba(27,79,216,.35)}
.btn-ghost{background:var(--card);border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.industry-note{text-align:center;margin-top:28px;font-size:13.5px;color:var(--ink-3)}
.industry-note a{color:var(--brand);font-weight:500}
.check-list{margin-top:14px;display:flex;flex-direction:column;gap:11px}
.check-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.7}
.check-list li svg{width:17px;height:17px;color:var(--green);flex:none;margin-top:4px}
.alert{border-radius:var(--radius-s);padding:14px 18px;font-size:14px;margin-bottom:22px}
.alert-error{background:#FDECEC;border:1px solid #F5C2C2;color:#B42318}
.alert-success{background:var(--green-bg);border:1px solid #BCE9D4;color:#067647}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line-soft)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:18px;letter-spacing:-.3px;flex:none}
.brand-mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;font-size:17px;flex:none}
.brand-name{white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:22px}
.main-nav ul{display:flex;align-items:center;gap:22px}
.main-nav a{font-size:14px;color:var(--ink-2);font-weight:500;transition:color .15s;white-space:nowrap}
.main-nav a:hover{color:var(--brand)}
.main-nav a.active{color:var(--brand);font-weight:700}
.nav-cta{padding:9px 18px;font-size:14px;background:var(--brand);color:#fff;border-radius:var(--radius-s);font-weight:600;flex:none;transition:background .18s,transform .18s}
.nav-cta:hover{background:var(--brand-deep);transform:translateY(-1px)}
.mobile-menu-btn{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:9px;background:var(--card);align-items:center;justify-content:center;color:var(--ink);flex:none}

/* ============ Hero ============ */
.hero{position:relative;padding:88px 0 0;overflow:hidden}
.hero::before{content:"";position:absolute;top:-240px;left:-160px;width:640px;height:640px;border-radius:50%;background:radial-gradient(circle,rgba(46,107,255,.13),transparent 65%);pointer-events:none}
.hero::after{content:"";position:absolute;right:-220px;bottom:-260px;width:620px;height:620px;border-radius:50%;background:radial-gradient(circle,rgba(15,169,104,.09),transparent 62%);pointer-events:none}
.hero-dots{position:absolute;inset:0;background-image:radial-gradient(rgba(12,27,51,.07) 1px,transparent 1px);background-size:26px 26px;mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 70%);-webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 70%);pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:1.04fr .96fr;gap:64px;align-items:center;padding-bottom:72px}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);background:var(--sky-2);border:1px solid #D3E3FF;padding:5px 14px;border-radius:999px;margin-bottom:18px}
.hero-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.hero-title{font-size:clamp(32px,4.2vw,50px);font-weight:900;line-height:1.22;letter-spacing:-1px}
.hero-sub{color:var(--ink-2);font-size:16.5px;line-height:1.85;margin:22px 0 30px;max-width:31em}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero-trust{display:flex;gap:34px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line-soft)}
.hero-trust li{display:flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:var(--ink-2)}
.hero-trust li svg{width:15px;height:15px;color:var(--green);flex:none}
.hero-visual{position:relative;display:flex;flex-direction:column;gap:16px}
.hero-glow{position:absolute;inset:10% 0;background:radial-gradient(ellipse at 60% 40%,rgba(46,107,255,.14),transparent 60%);filter:blur(30px);z-index:-1;pointer-events:none}
.chat-card{background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-lg);overflow:hidden;font-size:13.5px}
.chat-card-2{margin-left:auto;max-width:92%}
.chat-head{display:flex;align-items:center;gap:8px;padding:12px 18px;border-bottom:1px solid var(--line-soft);background:#FAFCFF;font-size:12.5px;color:var(--ink-3);font-weight:500}
.chat-dot{width:9px;height:9px;border-radius:50%;background:var(--brand);flex:none}
.chat-dot-2{background:var(--green)}
.chat-q{align-self:flex-end;background:var(--brand);color:#fff;border-radius:14px 14px 4px 14px;padding:10px 15px;line-height:1.6;margin:16px 16px 0 auto;max-width:80%;box-shadow:0 6px 16px rgba(46,107,255,.25)}
.chat-a{background:var(--sky-2);border:1px solid #D8E6FF;border-radius:4px 14px 14px 14px;padding:13px 15px;margin:8px 16px;line-height:1.75;color:var(--ink)}
.chat-a strong{color:var(--brand);font-weight:700}
.chat-src{display:flex;align-items:center;gap:6px;margin:0 16px 14px;font-size:11.5px;color:var(--green)}

/* ============ 痛点区 ============ */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.pain-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;position:relative;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.pain-card:hover{transform:translateY(-3px);border-color:#BBD3FF;box-shadow:var(--shadow)}
.pain-num{position:absolute;top:22px;right:24px;font-size:34px;font-weight:900;color:var(--line);letter-spacing:-1px}
.pain-icon{display:inline-flex;width:46px;height:46px;border-radius:12px;align-items:center;justify-content:center;background:var(--sky);color:var(--brand);margin-bottom:20px}
.pain-icon svg{width:23px;height:23px}
.pain-card h3{font-size:17.5px;font-weight:700;line-height:1.55;margin-bottom:10px}
.pain-card p{font-size:14px;color:var(--ink-2);line-height:1.8}

/* ============ 服务 ============ */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.svc-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;display:flex;flex-direction:column;position:relative;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.svc-card:hover{transform:translateY(-3px);border-color:#BBD3FF;box-shadow:var(--shadow)}
.svc-num{font-size:12px;font-weight:600;color:var(--brand);background:var(--sky);border-radius:7px;padding:3px 9px;display:inline-block;width:fit-content;margin-bottom:14px}
.svc-card h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.svc-card h3 a:hover{color:var(--brand)}
.svc-tagline{font-size:13px;color:var(--brand);font-weight:600;margin-bottom:10px;line-height:1.6}
.svc-desc{font-size:13.5px;color:var(--ink-2);line-height:1.8;margin-bottom:16px}
.svc-link{display:inline-flex;align-items:center;gap:5px;color:var(--brand);font-size:13.5px;font-weight:600;margin-top:auto}
.svc-link svg{transition:transform .18s ease}
.svc-link:hover svg{transform:translateX(3px)}
.svc-list{display:flex;flex-direction:column;gap:22px}
.svc-block{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:34px 36px}
.svc-block-head{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;margin-bottom:16px}
.svc-block-head h2{font-size:22px;font-weight:800;letter-spacing:-.3px}
.svc-block-head h2 a:hover{color:var(--brand)}
.svc-block-body h3{font-size:16px;font-weight:700;margin:22px 0 12px}
.svc-block-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line-soft);flex-wrap:wrap}
.svc-cycle{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-3)}
.svc-cycle svg{width:15px;height:15px;color:var(--brand)}

/* ============ 行业 ============ */
.ind-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.ind-card{min-width:0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;display:flex;flex-direction:column;gap:14px;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.ind-card-head{display:grid;grid-template-columns:38px minmax(0,1fr) 18px;gap:11px;align-items:center}
.ind-card h3{min-width:0;font-size:16.5px;font-weight:700;line-height:1.5}
.ind-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:10px;background:var(--sky-2);color:var(--brand-deep)}
.ind-icon svg{width:21px;height:21px}
.ind-card p{font-size:14px;color:var(--ink-2);line-height:1.85;text-wrap:balance}
.ind-arrow{display:flex;align-items:center;justify-content:center;color:var(--brand-deep);transition:transform .18s ease}
.ind-arrow svg{width:17px;height:17px}
.ind-card:focus-visible{outline:3px solid var(--brand-deep);outline-offset:4px;border-color:var(--brand)}
.ind-card:active{border-color:var(--brand);background:var(--sky-2)}
@media(hover:hover){
  .ind-card:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--shadow)}
  .ind-card:hover .ind-arrow{transform:translateX(3px)}
}
@media(prefers-reduced-motion:reduce){
  .ind-card,.ind-arrow{transition:none}
  .ind-card:hover,.ind-card:hover .ind-arrow{transform:none}
}
.ind-list{display:flex;flex-direction:column;gap:22px}
.ind-block{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:34px 36px}
.ind-block h2{font-size:22px;font-weight:800;margin-bottom:6px}
.ind-block h2 a:hover{color:var(--brand)}

/* ============ 案例 ============ */
.case-grid{display:flex;flex-direction:column;gap:16px}
.case-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;display:flex;flex-direction:column;gap:12px;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.case-card:hover{transform:translateY(-3px);border-color:#BBD3FF;box-shadow:var(--shadow)}
.case-tag{font-size:11.5px;font-weight:600;color:var(--green);background:var(--green-bg);border:1px solid #BCE9D4;padding:2px 10px;border-radius:999px;width:fit-content}
.case-card h3{font-size:17.5px;font-weight:700}
.case-card h3 a:hover{color:var(--brand)}
.case-tagline{font-size:14px;color:var(--brand);font-weight:600}
.metric-row{display:flex;gap:14px;flex-wrap:wrap}
.metric{background:var(--sky-2);border:1px solid #D8E6FF;border-radius:12px;padding:14px 18px;min-width:130px;flex:1}
.metric strong{display:block;font-size:20px;font-weight:900;color:var(--ink);letter-spacing:-.4px}
.metric strong em{font-style:normal;color:var(--green)}
.metric span{display:block;font-size:11.5px;color:var(--ink-3);margin-top:2px}
.metric p{font-size:12px;color:var(--ink-2);margin-top:6px;line-height:1.6}
.metric-row-lg .metric{padding:20px 24px}
.metric-row-lg .metric strong{font-size:26px}
.case-list{display:flex;flex-direction:column;gap:22px}
.case-block{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:34px 36px;display:flex;flex-direction:column;gap:12px}
.case-block h2{font-size:22px;font-weight:800}
.case-block h2 a:hover{color:var(--brand)}

/* 案例目录：沿用全站品牌，按项目、指标、问答组织信息。 */
.case-catalog{--case-accent:var(--brand-deep)}
.case-catalog a:focus-visible,.case-catalog button:focus-visible,.case-catalog [tabindex]:focus-visible{outline:3px solid var(--case-accent);outline-offset:5px}
.case-catalog [id]{scroll-margin-top:92px}
.case-catalog .case-catalog-hero{text-align:left;padding:56px 0 42px}
.case-catalog-hero::before{display:none}
.case-catalog .hero-eyebrow{border:0;background:none;padding:0;color:var(--case-accent);font-size:14px;letter-spacing:.04em}
.case-catalog .hero-eyebrow::before{display:none}
.case-catalog .page-hero-sub{max-width:40em;margin-left:0;margin-top:22px;line-height:1.9}
.case-jump-links{display:flex;flex-wrap:wrap;gap:10px 28px;margin-top:28px}
.case-jump-links a{color:var(--case-accent);font-size:14px;font-weight:600;min-height:44px;display:inline-flex;align-items:center;border-bottom:1px solid var(--line)}
.case-catalog a:hover{text-decoration:underline;text-underline-offset:4px}
.case-catalog .svc-link{color:var(--case-accent)}
.case-catalog-note{display:grid;grid-template-columns:auto minmax(0,1fr);gap:18px;padding:18px 0 26px;border-top:1px solid var(--line);color:var(--ink-2);font-size:13px;line-height:1.8}
.case-catalog-note strong{color:var(--ink);white-space:nowrap}
.case-catalog .case-list{gap:28px}
.case-catalog .case-block{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:0;padding:0;overflow:hidden}
.case-project-main{padding:32px 36px;min-width:0}
.case-project-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--ink-2);margin-bottom:14px}
.case-project-meta span:first-child{color:var(--case-accent);font-weight:700}
.case-project-meta span+span{padding-left:14px;border-left:1px solid var(--line)}
.case-catalog .case-block h2{font-size:clamp(21px,2.1vw,26px);line-height:1.55;letter-spacing:-.3px}
.case-context-title{font-size:13px;font-weight:700;margin:24px 0 8px;color:var(--ink)}
.case-project-summary{font-size:14px;line-height:1.95;color:var(--ink-2);max-width:48em}
.case-project-steps{list-style:none;counter-reset:case-step;display:grid;gap:13px;margin-top:12px}
.case-project-steps li{counter-increment:case-step;position:relative;padding-left:32px;font-size:13px;line-height:1.8;color:var(--ink-2)}
.case-project-steps li::before{content:counter(case-step,decimal-leading-zero);position:absolute;left:0;top:0;font-size:12px;color:var(--case-accent);font-variant-numeric:tabular-nums;font-weight:700}
.case-project-steps strong{color:var(--ink);margin-right:10px}
.case-project-links{display:flex;flex-wrap:wrap;align-items:center;gap:8px 24px;margin-top:25px}
.case-project-links a{min-height:44px;display:inline-flex;align-items:center;font-size:13px;font-weight:600;color:var(--ink-2);margin:0}
.case-project-observation{background:var(--sky-2);padding:32px 28px;min-width:0;border-left:1px solid var(--line-soft)}
.case-project-observation h3{font-size:15px}
.case-observation-note{font-size:12px;color:var(--ink-2);margin-top:5px}
.case-observations{margin-top:22px}
.case-observations>div{padding:18px 0;border-top:1px solid var(--line)}
.case-observations dt{font-size:13px;color:var(--ink-2)}
.case-observations dd{margin-top:5px;line-height:1.4}
.case-observations strong{display:block;font-size:clamp(26px,2.8vw,36px);font-weight:800;letter-spacing:-.7px;color:var(--ink);overflow-wrap:anywhere;font-variant-numeric:tabular-nums}
.case-observations dd span{display:block;font-size:13px;color:var(--ink-2);margin-top:6px}
.case-measurement-link{color:var(--case-accent);display:inline-flex;align-items:center;min-height:44px;margin-top:12px;font-size:12px;text-decoration:underline;text-underline-offset:4px}
.case-observation-empty{font-size:14px;color:var(--ink-2);margin-top:24px}
.case-section-heading{margin-bottom:28px;max-width:48em}
.case-section-heading h2,.case-contact-copy h2{font-size:clamp(24px,3vw,32px);line-height:1.5;letter-spacing:-.5px}
.case-section-heading p,.case-contact-copy>p{font-size:15px;color:var(--ink-2);margin-top:13px;line-height:1.9}
.case-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--card)}
.case-table-hint{display:none}
.case-metric-guide{width:100%;border-collapse:collapse;text-align:left;font-size:14px;line-height:1.85}
.case-metric-guide caption{text-align:left;padding:16px 24px;font-size:13px;color:var(--ink-2)}
.case-metric-guide th,.case-metric-guide td{padding:18px 24px;vertical-align:top;border-top:1px solid var(--line-soft)}
.case-metric-guide thead{background:var(--sky-2)}
.case-metric-guide thead th{font-size:13px}
.case-metric-guide tbody th{width:18%;white-space:nowrap;font-weight:600}
.case-metric-guide td{color:var(--ink-2);width:41%}
.case-evidence{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:60px;margin-top:50px}
.case-evidence h3{font-size:21px;line-height:1.6}
.case-evidence p{font-size:14px;color:var(--ink-2);line-height:1.9;margin-top:12px;max-width:28em}
.case-evidence .svc-link{font-size:13px;display:inline-block;margin-top:16px}
.case-evidence-steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 32px;list-style:none;counter-reset:evidence}
.case-evidence-steps li{counter-increment:evidence;border-left:2px solid var(--line);padding-left:18px;position:relative}
.case-evidence-steps li::before{content:counter(evidence,decimal-leading-zero);display:block;color:var(--case-accent);font-size:13px;font-weight:700;margin-bottom:6px}
.case-evidence-steps strong{font-size:14px;display:block;margin-bottom:6px}
.case-evidence-steps span{font-size:13px;color:var(--ink-2);line-height:1.8;display:block}
.case-catalog .case-questions{background:var(--card);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.case-questions-layout{display:grid;grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:72px}
.case-catalog-faq section+section{border-top:1px solid var(--line);padding-top:22px;margin-top:22px}
.case-catalog-faq h3{font-size:17px;line-height:1.7}
.case-catalog-faq p{font-size:14px;color:var(--ink-2);line-height:1.95;margin-top:10px}
.case-catalog .case-catalog-cta{background:var(--bg);padding:76px 0}
.case-catalog-cta::before,.case-catalog-cta::after{display:none}
.case-contact-layout{display:grid;grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:72px;align-items:start}
.case-contact-copy{padding-top:20px}
.case-contact-copy .svc-link{display:inline-block;margin-top:24px;font-size:14px}
.case-catalog .lead-form{box-shadow:none;border:1px solid var(--line);padding:28px}
.case-catalog .form-note{color:var(--ink-2)}
.case-catalog .btn-primary{background:var(--case-accent);box-shadow:none;white-space:normal}
.case-catalog .form-success{color:var(--ink);border:1px solid var(--line);background:var(--card)}
.case-catalog .form-success p{color:var(--ink-2)}
.case-catalog input::placeholder,.case-catalog textarea::placeholder{color:#626F83;opacity:1}
@media(max-width:920px){
  .case-catalog .case-block{grid-template-columns:minmax(0,1fr) 235px}
  .case-project-main{padding:28px}
  .case-project-observation{padding:28px 22px}
  .case-questions-layout,.case-contact-layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .case-questions-layout .case-section-heading{margin-bottom:0}
  .case-evidence{gap:32px}
}
@media(max-width:640px){
  .case-catalog .case-catalog-hero{padding:36px 0 28px}
  .case-catalog-hero h1{font-size:28px;line-height:1.45}
  .case-catalog .page-hero-sub{font-size:15px;margin-top:16px}
  .case-jump-links{gap:6px 18px;margin-top:18px}
  .case-jump-links a{font-size:13px}
  .case-catalog-note{grid-template-columns:1fr;gap:4px;padding:16px 0 22px}
  .case-catalog .case-block{grid-template-columns:minmax(0,1fr)}
  .case-project-main{padding:24px 20px}
  .case-project-observation{padding:22px 20px;border-left:0;border-top:1px solid var(--line-soft)}
  .case-observations{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 20px;margin-top:14px}
  .case-observations>div:first-child{grid-column:1/-1}
  .case-observations>div{padding:14px 0}
  .case-observations strong{font-size:28px}
  .case-project-links{gap:4px 16px}
  .case-metric-guide{min-width:600px;font-size:13px}
  .case-table-hint{display:block;font-size:12px;color:var(--ink-2);margin-bottom:10px}
  .case-metric-guide th,.case-metric-guide td{padding:14px 16px}
  .case-metric-guide caption{padding:14px 16px}
  .case-evidence{grid-template-columns:minmax(0,1fr);gap:26px;margin-top:34px}
  .case-evidence-steps{gap:24px 18px}
  .case-catalog .case-catalog-cta{padding:52px 0}
  .case-contact-copy{padding-top:0}
  .case-catalog .lead-form{padding:24px 20px}
}
@media(prefers-reduced-motion:reduce){
  .case-catalog .btn{transition:none}
  .case-catalog .btn:hover{transform:none}
}

/* ============ 方法论 ============ */
.md-title{font-size:22px;font-weight:800;margin:44px 0 22px;letter-spacing:-.3px}
.md-title:first-child{margin-top:0}
.method-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.method-grid-lg{grid-template-columns:repeat(2,1fr)}
.dim-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.dim-card:hover{transform:translateY(-3px);border-color:#BBD3FF;box-shadow:var(--shadow)}
.dim-key{font-size:11.5px;font-weight:700;color:var(--brand);background:var(--sky);border-radius:6px;padding:3px 9px;display:inline-block;margin-bottom:14px;letter-spacing:.5px}
.dim-card h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.dim-card p{font-size:13.5px;color:var(--ink-2);line-height:1.75}
.dim-examples{margin-top:14px;display:flex;flex-direction:column;gap:7px}
.dim-examples li{font-size:12.5px;color:var(--ink-3);padding-left:14px;position:relative}
.dim-examples li::before{content:"·";position:absolute;left:2px;color:var(--brand);font-weight:900}

/* ============ FAQ（展开式：问答全文直接可见） ============ */
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px 24px;transition:border-color .18s ease,box-shadow .18s ease}
.faq-item:hover{border-color:#BBD3FF;box-shadow:var(--shadow)}
.faq-q{display:flex;align-items:flex-start;gap:12px;margin-bottom:10px}
.faq-q h3{font-size:16px;font-weight:700;line-height:1.6;color:var(--ink)}
.faq-num{flex:none;width:26px;height:26px;border-radius:8px;background:var(--sky);color:var(--brand);font-size:12.5px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:1px}
.faq-num-a{background:var(--green-bg);color:var(--green)}
.faq-a{display:flex;align-items:flex-start;gap:12px}
.faq-a p{font-size:14.5px;color:var(--ink-2);line-height:1.9}

/* ============ 最终行动区 ============ */
.cta{background:var(--dark);position:relative;overflow:hidden;padding:96px 0}
.cta::before{content:"";position:absolute;top:-180px;left:50%;transform:translateX(-50%);width:760px;height:420px;border-radius:50%;background:radial-gradient(ellipse,rgba(46,107,255,.35),transparent 65%);pointer-events:none}
.cta::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);background-size:26px 26px;pointer-events:none}
.cta .container{position:relative;z-index:1}
.cta-head{text-align:center;color:#fff;max-width:660px;margin:0 auto 52px}
.cta-head h2{font-size:clamp(26px,3vw,36px);font-weight:900;letter-spacing:-.5px;line-height:1.35}
.cta-head p{color:#A9BBD8;font-size:15.5px;margin-top:16px}
.cta-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:stretch;max-width:980px;margin:0 auto}
.lead-form{background:#fff;border-radius:16px;padding:32px 34px;box-shadow:0 30px 70px rgba(0,0,0,.35)}
.cta-grid .lead-form{max-width:none}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{margin-bottom:14px;display:block}
.field span{display:block;font-size:12.5px;font-weight:600;color:var(--ink-2);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:9px;padding:0 14px;font-size:14px;font-family:inherit;color:var(--ink);background:var(--card);transition:border-color .15s,box-shadow .15s}
.field input,.field select{height:44px}
.field textarea{padding:12px 14px;resize:vertical}
.field select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%237A879E' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 13px center;padding-right:34px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(46,107,255,.14)}
.form-note{font-size:12px;color:var(--ink-2);margin-top:13px;line-height:1.8}
.form-note a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px}
.form-note a:focus-visible{outline:2px solid var(--brand-deep);outline-offset:3px}
.form-note .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.form-success{text-align:center;padding:32px 24px;background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:16px;scroll-margin-top:88px}
.form-success:focus-visible{outline:3px solid var(--brand);outline-offset:4px}
.form-success h3{font-size:18px;color:var(--ink);margin-bottom:8px}
.form-success p{font-size:14px;color:var(--ink-2);line-height:1.8}
@media(max-width:767px){form.lead-form .field input,form.lead-form .field select,form.lead-form .field textarea{font-size:16px}}
.cta-aside{background:rgba(255,255,255,.05);border:1px dashed rgba(255,255,255,.28);border-radius:16px;padding:30px 28px;color:#fff}
.cta-aside h3{font-size:17px;margin-bottom:14px}
.cta-aside .check-list li{color:#B8C9E2}
.cta-aside .check-list li svg{color:var(--green)}
.cta-note{font-size:12.5px;color:#A9BBD8;margin-top:18px}

/* ============ 页头（子页面） ============ */
.page-hero{padding:64px 0 48px;text-align:center;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;top:-200px;left:50%;transform:translateX(-50%);width:640px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(46,107,255,.12),transparent 62%);pointer-events:none}
.page-hero .container{position:relative}
.page-hero h1{font-size:clamp(26px,3.4vw,40px);font-weight:900;letter-spacing:-.8px;line-height:1.3}
.page-hero-sub{color:var(--ink-2);font-size:16px;margin-top:14px;max-width:34em;margin-left:auto;margin-right:auto}
.banner-rule{width:56px;height:3px;border-radius:3px;background:var(--brand);margin:18px auto}
.error-code{font-size:88px;font-weight:900;color:var(--line);letter-spacing:-3px;line-height:1}
.error-links{display:flex;gap:14px;justify-content:center;margin-top:26px;flex-wrap:wrap}
.banner-top{padding:72px 0 40px;text-align:center}
.banner-top h1{font-size:clamp(26px,3.4vw,40px);font-weight:900;letter-spacing:-.8px}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);padding:18px 0 0;flex-wrap:wrap}
.breadcrumb a{color:var(--ink-3);transition:color .15s}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--ink-2);font-weight:500}

/* ============ 文章与内容 ============ */
.art-main{padding:20px 0 80px}
.art-head{margin-bottom:30px}
.art-head h1{font-size:clamp(24px,3vw,34px);font-weight:900;letter-spacing:-.6px;line-height:1.35;margin:14px 0}
.art-meta{display:flex;gap:18px;font-size:12.5px;color:var(--ink-3);flex-wrap:wrap}
.article-body{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:40px 44px}
.article-body h2{font-size:21px;font-weight:800;margin:30px 0 14px;letter-spacing:-.3px}
.article-body h2:first-child{margin-top:0}
.article-body h3{font-size:17px;font-weight:700;margin:22px 0 10px}
.article-body p{font-size:15px;color:var(--ink-2);line-height:1.9;margin-bottom:14px}
.article-body ul,.article-body ol{font-size:15px;color:var(--ink-2);line-height:1.9;margin:0 0 14px 22px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:6px}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body table{margin:18px 0}
.art-content h2{font-size:21px;font-weight:800;margin:30px 0 14px;letter-spacing:-.3px}
.art-content h3{font-size:17px;font-weight:700;margin:22px 0 10px}
.art-content p{font-size:15px;color:var(--ink-2);line-height:1.9;margin-bottom:14px}
.art-content ul,.art-content ol{font-size:15px;color:var(--ink-2);line-height:1.9;margin:0 0 14px 22px}
.art-content ul{list-style:disc}
.art-content ol{list-style:decimal}
.art-content li{margin-bottom:6px}
.art-content table{margin:18px 0;border-collapse:collapse;width:100%}
.art-faq{margin-top:34px}
.art-faq h2{font-size:21px;font-weight:800;margin-bottom:18px}
.art-faq .faq-list{max-width:none}
.related{margin-top:44px}
.related h2{font-size:21px;font-weight:800;margin-bottom:18px}

/* GEO 直接答案块 */
.direct-answer{background:var(--sky-2);border:1px solid #C9DDFF;border-left:4px solid var(--brand);border-radius:12px;padding:20px 24px;margin:0 0 26px}
.da-label{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;color:var(--brand);background:var(--sky);border-radius:6px;padding:3px 10px;margin-bottom:10px;letter-spacing:.5px}
.da-label::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.direct-answer p{font-size:15px;color:var(--ink);line-height:1.85;margin:0}

/* 步骤列表 */
.step-list{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:12px}
.step-list li{background:var(--sky-2);border:1px solid #D8E6FF;border-radius:12px;padding:14px 18px;display:flex;flex-direction:column;gap:4px}
.step-list li strong{font-size:14.5px;color:var(--ink)}
.step-list li span{font-size:13.5px;color:var(--ink-2);line-height:1.7}
.step-list-lg li{padding:18px 22px}
.step-list-lg li strong{font-size:15.5px}

/* 案例长文使用独立分节，避免套用短步骤卡片而压缩正文。 */
.case-detail .metric-row{margin-bottom:28px}
.case-detail .metric p{font-size:12px;margin-bottom:0;line-height:1.6}
.case-detail .metric span{color:var(--ink-2);font-size:12.5px}
.case-detail .direct-answer p+p{margin-top:14px}
.case-story{margin-top:32px}
.case-story-section{padding:26px 0;border-top:1px solid var(--line)}
.case-detail .case-story-section h2{margin:0 0 16px;font-size:21px}
.case-story-body>:last-child{margin-bottom:0}
.case-detail .case-actions{padding-left:22px;margin:16px 0;list-style:decimal}
.case-detail .case-actions li{padding-left:4px;margin-bottom:10px}
.case-empty{padding:32px 0;color:var(--ink-2)}
@media(max-width:600px){
  .case-detail .metric-row{display:grid;grid-template-columns:minmax(0,1fr);gap:10px}
  .case-detail .metric{min-width:0;padding:16px 20px}
  .case-detail .case-story-section h2{font-size:19px}
  .case-story-section{padding:22px 0}
}

/* 数据表格 */
.data-table{border-collapse:collapse;width:100%;margin:18px 0;font-size:14px}
.data-table caption{font-size:13px;color:var(--ink-3);text-align:left;margin-bottom:10px}
.data-table th,.data-table td{border:1px solid var(--line);padding:12px 16px;text-align:left;vertical-align:top}
.data-table th{background:var(--sky-2);font-weight:700;color:var(--ink);white-space:nowrap}
.data-table td{color:var(--ink-2);line-height:1.7}

/* 方案要点 */
.point-list{display:flex;flex-direction:column;gap:16px}
.point-item{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px 24px;display:flex;gap:18px;align-items:flex-start}
.point-item .pain-num{position:static;font-size:28px;flex:none;line-height:1}
.point-item h3{font-size:16px;font-weight:700;margin-bottom:6px}
.point-item p{font-size:13.5px;color:var(--ink-2);line-height:1.8}

/* 信源块 */
.source-block{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px 26px;margin-top:30px}
.source-block-row{display:flex;gap:14px;padding:8px 0}
.source-block-row .source-label{flex:none;width:70px;font-size:12px;font-weight:700;color:var(--brand);background:var(--sky);border-radius:6px;padding:2px 0;text-align:center;height:fit-content;margin-top:2px}
.source-block-row p{font-size:13px;color:var(--ink-3);line-height:1.8;margin:0}
.art-main .article-disclaimer{border-top:1px solid var(--line-soft);margin-top:8px;padding-top:16px}
.art-main .article-disclaimer .source-label{color:var(--brand-deep)}
.art-main .article-disclaimer p{min-width:0;color:var(--ink-2);line-height:1.9;overflow-wrap:anywhere}
@media(max-width:600px){
  .art-main .article-disclaimer{flex-direction:column;gap:10px}
}

/* 价值观 */
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:16px}
.value-card{background:var(--sky-2);border:1px solid #D8E6FF;border-radius:12px;padding:22px 22px}
.value-card h3{font-size:15.5px;font-weight:700;margin-bottom:8px}
.value-card p{font-size:13px;color:var(--ink-2);line-height:1.8;margin:0}

/* 文章卡片 */
.article-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.article-grid-3{grid-template-columns:repeat(3,1fr)}
.article-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;display:flex;flex-direction:column;gap:12px;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.article-card:hover{transform:translateY(-3px);border-color:#BBD3FF;box-shadow:var(--shadow)}
.article-card h3{font-size:16.5px;font-weight:700;line-height:1.55}
.article-card h3 a{text-decoration:none}
.article-card h3 a:hover{color:var(--brand)}
.art-date{font-size:12.5px;color:var(--ink-3)}

/* ============ 洞察栏目 ============ */
.block-head{text-align:center;max-width:640px;margin:0 auto 26px}
.block-title{font-size:clamp(22px,2.6vw,30px);font-weight:900;letter-spacing:-.5px;line-height:1.3}
.cs-tabs{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:34px}
.cs-tab{padding:9px 20px;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--ink-2);font-size:13.5px;font-weight:600;transition:all .18s ease}
.cs-tab:hover{border-color:var(--brand);color:var(--brand)}
.cs-tab.active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(46,107,255,.25)}
.cs-tab.active .tab-count{color:var(--brand)}
.tab-count{display:inline-block;font-style:normal;font-size:11px;font-weight:700;background:rgba(255,255,255,.85);color:var(--brand);border-radius:999px;padding:1px 7px;margin-left:6px}
.group-title{font-size:18px;font-weight:800;margin:0}
.in-list-3 .in-card{grid-template-columns:96px 1fr}
.in-list-3 .c-cover{min-height:150px}
.in-featured{display:grid;grid-template-columns:.9fr 1.1fr;gap:0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:20px;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.in-featured:hover{transform:translateY(-3px);border-color:#BBD3FF;box-shadow:var(--shadow)}
.f-cover{position:relative;display:flex;flex-direction:column;justify-content:flex-end;gap:10px;padding:26px;color:#fff;min-height:230px}
.f-cover .tag{position:absolute;top:20px;left:22px}
.f-mark{font-size:56px;font-weight:900;opacity:.35;line-height:1;letter-spacing:-2px;position:absolute;top:56px;left:22px}
.f-label{font-size:17px;font-weight:700;line-height:1.55;max-width:16em;position:relative;z-index:1}
.tag{display:inline-block;width:fit-content;font-size:11.5px;font-weight:600;background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.35);padding:2px 10px;border-radius:999px}
.f-body{padding:28px 30px;display:flex;flex-direction:column;gap:12px}
.f-meta{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--ink-3);flex-wrap:wrap}
.dot-s{width:3px;height:3px;border-radius:50%;background:var(--line);flex:none}
.f-body h3{font-size:20px;font-weight:800;letter-spacing:-.3px;line-height:1.5}
.f-body p{font-size:14px;color:var(--ink-2);line-height:1.85}
.link-more{display:inline-flex;align-items:center;gap:5px;color:var(--brand);font-size:13.5px;font-weight:600}
.link-more svg{transition:transform .18s ease}
.in-featured:hover .link-more svg{transform:translateX(3px)}
.in-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-bottom:28px}
.in-card{display:grid;grid-template-columns:118px 1fr;gap:0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.in-card:hover{transform:translateY(-3px);border-color:#BBD3FF;box-shadow:var(--shadow)}
.c-cover{position:relative;display:flex;flex-direction:column;justify-content:space-between;padding:16px;color:#fff;min-height:190px}
.c-num{font-size:40px;font-weight:900;opacity:.4;line-height:1;letter-spacing:-1px}
.c-body{display:flex;flex-direction:column;gap:8px;padding:20px 22px}
.c-meta{font-size:11.5px;color:var(--ink-3)}
.c-body h4{font-size:15.5px;font-weight:700;line-height:1.55}
.c-body p{font-size:12.5px;color:var(--ink-2);line-height:1.75;flex:1}
.more{display:inline-flex;align-items:center;gap:5px;color:var(--brand);font-size:12.5px;font-weight:600}
.more svg{transition:transform .18s ease}
.in-card:hover .more svg{transform:translateX(3px)}
.in-note{text-align:center;font-size:13px;color:var(--ink-3)}

/* 文章页：返回 / 目录 / 关键认知 / 对比示意 */
.art-back{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--ink-3);margin-bottom:18px;transition:color .15s}
.art-back:hover{color:var(--brand)}
.art-industry-link{display:inline-flex;align-items:center;gap:8px;margin:6px 0 4px;padding:12px 18px;background:var(--sky-2);border:1px solid #C9DDFF;border-radius:12px;color:var(--brand);font-size:14px;font-weight:600;transition:transform .18s ease,border-color .18s ease}
.art-industry-link:hover{transform:translateY(-2px);border-color:var(--brand)}
.service-chips{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:12px 0 4px;padding:14px 0;border-top:1px dashed var(--line)}
.service-chips-label{font-size:13px;font-weight:700;color:var(--ink-3)}
.service-chip{display:inline-flex;align-items:center;font-size:13px;font-weight:600;color:var(--ink-2);background:var(--card);border:1px solid var(--line);border-radius:999px;padding:6px 14px;transition:all .18s ease}
.service-chip:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-1px)}
.art-meta{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-3);flex-wrap:wrap}
.art-toc{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin:0 0 24px}
.art-toc b{font-size:13px;color:var(--ink);display:block;margin-bottom:10px}
.art-toc-chips{display:flex;gap:8px;flex-wrap:wrap}
.art-toc-chips a{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);background:var(--sky-2);border:1px solid #D8E6FF;border-radius:999px;padding:6px 14px 6px 8px;transition:all .18s ease}
.art-toc-chips a:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-1px)}
.art-toc-chips .n{width:22px;height:22px;border-radius:50%;background:var(--brand);color:#fff;font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center}
/* 移动端目录紧凑化：芯片缩小、内边距收紧，少占首屏 */
@media (max-width:640px){
  .art-toc{padding:12px 14px;margin-bottom:18px}
  .art-toc-chips{gap:6px}
  .art-toc-chips a{font-size:12px;padding:5px 11px 5px 6px;gap:6px}
  .art-toc-chips .n{width:19px;height:19px;font-size:10px}
}

/* 要点速览 */
.takeaways{background:linear-gradient(135deg,var(--sky-2),#FFFFFF);border:1px solid #C9DDFF;border-radius:14px;padding:20px 24px;margin:0 0 24px}
.takeaways ul{margin:10px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:8px}
.takeaways li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--ink);line-height:1.7}
.takeaways li::before{content:"◆";color:var(--brand);font-size:11px;margin-top:6px;flex:none}
.art-callout{background:var(--sky-2);border:1px solid #C9DDFF;border-left:4px solid var(--brand);border-radius:12px;padding:18px 22px;margin:20px 0;font-size:14.5px;line-height:1.85;color:var(--ink)}
.art-callout b{color:var(--brand-deep)}
.cs-compare{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0}
.aiq-card{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.aiq-head{display:flex;align-items:center;gap:8px;padding:11px 16px;border-bottom:1px solid var(--line-soft);font-size:13px;font-weight:700;color:var(--ink)}
.aiq-head .dot{width:9px;height:9px;border-radius:50%;flex:none}
.aiq-head .tag-b{margin-left:auto;font-size:10.5px;font-weight:600;color:var(--ink-3);background:var(--bg);border:1px solid var(--line);padding:1px 8px;border-radius:999px}
.aiq-q{background:var(--brand);color:#fff;border-radius:12px 12px 4px 12px;padding:9px 14px;font-size:13px;margin:14px 16px 0 auto;max-width:85%;box-shadow:0 5px 14px rgba(46,107,255,.22)}
.aiq-a{padding:12px 16px 14px;font-size:13.5px;line-height:1.8;color:var(--ink)}
.aiq-a .hl{color:var(--brand);font-weight:700;background:linear-gradient(180deg,transparent 62%,#CBE1FF 62%);padding:0 2px}
.src-line{margin-top:9px;padding-top:8px;border-top:1px dashed var(--line);font-size:11px;color:var(--green)}

/* 洞察正文卡片：阅读体验与信息密度并重 */
.art-content{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:40px 48px;box-shadow:var(--shadow)}
.art-content h2{font-size:21px;font-weight:800;margin:34px 0 16px;letter-spacing:-.3px;display:flex;align-items:center;gap:12px;padding-left:16px;border-left:4px solid var(--brand);line-height:1.5}
.art-content h2:first-child{margin-top:0}
.art-content h2 .n{flex:none;font-size:12.5px;font-weight:700;color:var(--brand);background:var(--sky);border-radius:7px;padding:3px 9px}
.art-content h3{font-size:17px;font-weight:700;margin:22px 0 10px}
.art-content p{font-size:15.5px;color:var(--ink-2);line-height:2;margin-bottom:16px;text-indent:2em;text-align:justify}
.art-content ul,.art-content ol{font-size:15.5px;color:var(--ink-2);line-height:2;margin:0 0 16px 6px}
.art-content ul{list-style:none;padding-left:0}
.art-content ul li{position:relative;padding-left:18px;margin-bottom:8px}
.art-content ul li::before{content:"";position:absolute;left:0;top:12px;width:7px;height:7px;border-radius:50%;background:var(--brand)}
.art-content ol{list-style:none;counter-reset:art-ol;padding-left:0}
.art-content ol li{counter-increment:art-ol;position:relative;padding-left:38px;margin-bottom:8px}
.art-content ol li::before{content:counter(art-ol,decimal-leading-zero);position:absolute;left:0;top:3px;width:27px;height:27px;border-radius:8px;background:var(--sky);color:var(--brand);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
.art-content table{margin:20px 0;border-collapse:separate;border-spacing:0;width:100%;font-size:14px;border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}
.art-content table caption{font-size:13px;color:var(--ink-3);text-align:left;margin-bottom:10px}
.art-content table th,.art-content table td{border-bottom:1px solid var(--line-soft);border-right:1px solid var(--line-soft);padding:12px 16px;text-align:left;vertical-align:top}
.art-content table th:last-child,.art-content table td:last-child{border-right:none}
.art-content table th{background:var(--sky-2);font-weight:700;color:var(--ink);white-space:nowrap}
.art-content table td{color:var(--ink-2);line-height:1.8}
.art-content table tbody tr:nth-child(even){background:#FAFCFF}
.art-content a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.art-content .art-callout{margin:24px 0}
@media (max-width:600px){
  .art-content{padding:26px 20px}
  .art-content p{text-indent:0}
}

.entity-chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:10px}
.entity-chip{display:inline-flex;align-items:center;font-size:13px;font-weight:600;color:var(--ink-2);background:var(--card);border:1px solid var(--line);border-radius:999px;padding:5px 14px;transition:all .18s ease;text-decoration:none}
.entity-chip:hover{color:var(--brand);border-color:var(--brand)}
.entity-chip-link::after{content:"→";margin-left:6px;font-size:11px;color:var(--brand)}

/* 文章页瘦身 CTA（表单统一收敛到联系页，减少模板样板占比） */
.cta-slim .container{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-slim .cta-head{text-align:left;flex:1;min-width:240px}
.cta-slim .cta-head h2{margin-bottom:6px}
.cta-slim .cta-head p{margin:0;color:var(--ink-2);font-size:14.5px}
@media (max-width:640px){.cta-slim .container{flex-direction:column;align-items:flex-start}}

/* 参考资料编号列表（文章页） */
.source-refs{margin-top:4px}
.ref-list{margin:0;padding-left:0;list-style:none;counter-reset:ref}
.ref-list li{counter-increment:ref;position:relative;padding-left:32px;margin-bottom:8px;line-height:1.8}
.ref-list li::before{content:"[" counter(ref) "]";position:absolute;left:0;top:0;font-size:13px;font-weight:700;color:var(--brand);background:var(--sky);border-radius:6px;padding:0 7px}
.ref-list a{color:var(--ink-1);font-size:14px;text-decoration:none;border-bottom:1px solid transparent}
.ref-list a:hover{color:var(--brand);border-bottom-color:var(--brand)}
.ref-source-note{margin:8px 0 0;font-size:12.5px;color:var(--ink-3);line-height:1.7}

/* 用户常问 AI 的问题清单（行业方案页） */
.article-lead{font-size:14.5px;color:var(--ink-2);line-height:1.9;margin:0 0 18px}
.ask-list{margin:0 0 30px;padding:0;list-style:none;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--card);counter-reset:ask}
.ask-list li{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 18px;border-bottom:1px solid var(--line);counter-increment:ask}
.ask-list li:last-child{border-bottom:0}
.ask-list li::before{content:counter(ask,decimal-leading-zero);font-size:12.5px;font-weight:800;color:var(--brand);background:var(--sky);border-radius:7px;padding:3px 8px;flex-shrink:0}
.ask-list a{flex:1;font-size:15px;font-weight:600;color:var(--ink-1);text-decoration:none}
.ask-list a:hover{color:var(--brand)}
.ask-list li span{font-size:12.5px;font-weight:600;color:var(--ink-3);flex-shrink:0}
.ask-list li:hover span{color:var(--brand)}

/* 相关区块头部 */
.related-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap}
.related-head h2{font-size:21px;font-weight:800;margin:0}
.related-more{display:inline-flex;align-items:center;gap:5px;color:var(--brand);font-size:13.5px;font-weight:600}

/* ============ 网站地图 ============ */
.sitemap-group{margin-bottom:34px}
.sitemap-group .section-title{font-size:20px;font-weight:800;margin-bottom:14px}
.sitemap-links ul{columns:2;column-gap:40px}
.sitemap-links li{margin-bottom:9px;break-inside:avoid}
.sitemap-links a{font-size:14px;color:var(--ink-2)}
.sitemap-links a:hover{color:var(--brand)}
.pagination{display:flex;gap:10px;justify-content:center;margin:30px 0 60px}
.pagination a,.pagination span{min-width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:9px;font-size:14px;background:var(--card)}
.pagination a:hover{border-color:var(--brand);color:var(--brand)}
.pagination .current{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:700}

/* ============ 页脚 ============ */
.site-footer{background:#081426;color:#8FA3C0;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:13px;line-height:1.85;max-width:30em}
.footer-col h3{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px}
.footer-col ul li{margin-bottom:9px}
.footer-col ul a{font-size:13px;transition:color .15s}
.footer-col ul a:hover{color:#fff}
.footer-industries ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:24px}
.footer-industries ul li{min-width:0}
.footer-beian{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;padding:0 0 16px;font-size:12.5px}
.footer-beian a:hover{color:#fff}
.copyright{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;display:flex;justify-content:center;gap:12px;flex-wrap:wrap;font-size:12px}
.copyright a{color:#8FA3C0}
.copyright a:hover{color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .hero-inner{grid-template-columns:1fr;gap:56px}
  .hero-visual{max-width:560px;margin:0 auto}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .ind-grid{grid-template-columns:repeat(3,1fr)}
  .method-grid,.method-grid-lg{grid-template-columns:repeat(2,1fr)}
  .cta-grid{grid-template-columns:1fr}
}
@media (max-width:920px){
  .section{padding:72px 0}
  .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line-soft);flex-direction:column;align-items:flex-start;gap:0;padding:10px 24px 18px;box-shadow:0 20px 40px rgba(12,27,51,.08)}
  .main-nav.open{display:flex}
  .main-nav ul{flex-direction:column;align-items:flex-start;gap:0;width:100%}
  .main-nav li{width:100%}
  .main-nav a{display:block;width:100%;padding:12px 0;border-bottom:1px solid var(--line-soft)}
  .mobile-menu-btn{display:flex}
  .pain-grid{grid-template-columns:1fr}
  .ind-grid{grid-template-columns:repeat(2,1fr)}
  .article-grid,.article-grid-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .value-grid{grid-template-columns:1fr}
  .sitemap-links ul{columns:1}
}
@media (max-width:600px){
  .container{padding:0 18px}
  .hero{padding:56px 0 0}
  .hero-trust{gap:22px;flex-wrap:wrap}
  .nav-cta{display:none}
  .svc-grid{grid-template-columns:1fr}
  .ind-grid{grid-template-columns:1fr;gap:12px}
  .ind-card{padding:18px 20px;gap:10px}
  .method-grid,.method-grid-lg{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .svc-block,.ind-block,.case-block{padding:24px 20px}
  .article-body{padding:26px 20px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-industries ul{column-gap:32px}
  .lead-form{padding:24px 20px}
  input,select,textarea{font-size:16px}
}
@media (max-width:920px){
  .in-featured{grid-template-columns:1fr}
  .f-cover{min-height:170px}
  .in-list{grid-template-columns:1fr}
  .cs-compare{grid-template-columns:1fr}
}
@media (max-width:600px){
  .in-card{grid-template-columns:96px 1fr}
  .c-cover{min-height:150px;padding:12px}
  .c-num{font-size:30px}
  .c-body{padding:14px}
  .f-body{padding:20px}
  .cs-tab{padding:8px 14px;font-size:12.5px}
}

/* ============ 行业目录：行业选择与采购评估 ============ */
.industry-catalog{--industry-accent:var(--brand-deep)}
.industry-catalog [hidden]{display:none!important}
.industry-catalog [id]{scroll-margin-top:94px}
.industry-catalog a:focus-visible,.industry-catalog button:focus-visible,.industry-catalog summary:focus-visible,.industry-catalog [tabindex]:focus-visible{outline:3px solid var(--industry-accent);outline-offset:5px}
.industry-catalog a:hover{text-decoration:underline;text-underline-offset:4px}
.industry-catalog .btn:hover{text-decoration:none}
.industry-catalog .industry-catalog-hero{text-align:left;padding:44px 0 48px}
.industry-catalog-hero::before{display:none}
.industry-catalog-hero h1{max-width:24em;line-height:1.5}
.industry-catalog .page-hero-sub{max-width:48em;margin:20px 0 0;line-height:1.9}
.industry-jump-links{display:flex;align-items:center;gap:26px;flex-wrap:wrap;margin-top:28px;color:var(--industry-accent);font-size:14px;font-weight:600}
.industry-catalog .btn-primary{background:var(--industry-accent);box-shadow:none}
.industry-section{padding:72px 0}
.industry-section-head{margin-bottom:28px;max-width:780px}
.industry-catalog h2{font-size:clamp(23px,2.4vw,29px);line-height:1.5;letter-spacing:-.4px}
.industry-section-head p{color:var(--ink-2);font-size:15px;margin-top:10px;line-height:1.85}
.industry-directory{padding:34px 0 60px;border-top:1px solid var(--line)}
.industry-filters{display:flex;flex-wrap:wrap;gap:9px;margin:0 0 24px}
.industry-filters button{display:inline-flex;gap:8px;align-items:center;padding:10px 14px;border:1px solid var(--line);border-radius:var(--radius-s);background:var(--card);color:var(--ink-2);font-size:13px;line-height:1.7}
.industry-filters button:hover{border-color:var(--industry-accent);color:var(--industry-accent)}
.industry-filters button[aria-pressed="true"]{background:var(--industry-accent);border-color:var(--industry-accent);color:#fff}
.industry-filters button span{font-variant-numeric:tabular-nums;font-size:12px}
.industry-result-count{font-size:13px;color:var(--ink-2);margin:-8px 0 16px}
.industry-results{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.industry-option{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.industry-option-heading{padding-bottom:18px;border-bottom:1px solid var(--line-soft)}
.industry-option h3{font-size:21px;line-height:1.5;letter-spacing:-.2px}
.industry-option-heading p{font-size:12.5px;line-height:1.7;color:var(--ink-2);margin-top:7px;min-height:3.4em}
.industry-option dl{font-size:13.5px;line-height:1.85;padding-top:16px;margin-bottom:22px}
.industry-option dl div+div{margin-top:14px}
.industry-option dt{font-size:12px;color:var(--industry-accent);font-weight:600;margin-bottom:4px}
.industry-option dd{color:var(--ink-2)}
.industry-text-link{color:var(--industry-accent);font-size:13.5px;font-weight:600;line-height:1.8;display:inline-block}
.industry-option>.industry-text-link{margin-top:auto}
.industry-directory-note{padding-top:26px;color:var(--ink-2);font-size:14px}
.industry-directory-note a{color:var(--industry-accent);text-decoration:underline;text-underline-offset:3px}
.industry-empty{padding:32px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);color:var(--ink-2)}
.industry-empty .industry-text-link{margin-top:14px}
.industry-needs{background:var(--card);border-block:1px solid var(--line-soft)}
.industry-needs-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:34px 64px}
.industry-needs-grid article{border-left:3px solid var(--line);padding-left:22px}
.industry-needs-grid h3{font-size:18px;line-height:1.6}
.industry-needs-grid p{font-size:14px;color:var(--ink-2);line-height:1.85;margin:10px 0 14px;max-width:30em}
.industry-fit-layout{display:grid;grid-template-columns:1fr 1fr;gap:74px}
.industry-fit-copy p{font-size:14px;color:var(--ink-2);line-height:1.95;margin-top:18px}
.industry-fit-copy .industry-text-link{margin-top:24px}
.industry-fit-checks{background:var(--sky);padding:28px 32px;border-radius:var(--radius)}
.industry-fit-checks div+div{margin-top:22px}
.industry-fit-checks h3{font-size:16px;line-height:1.7}
.industry-fit-checks p{font-size:14px;color:var(--ink-2);line-height:1.85;margin-top:6px}
.industry-delivery{background:var(--card);border-block:1px solid var(--line-soft)}
.industry-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-s)}
.industry-delivery-table{width:100%;border-collapse:collapse;min-width:680px;text-align:left;font-size:14px;line-height:1.85}
.industry-delivery-table caption{text-align:left;padding:14px 20px;color:var(--ink-2);font-size:13px;background:var(--sky-2)}
.industry-delivery-table th,.industry-delivery-table td{padding:17px 20px;border-top:1px solid var(--line);vertical-align:top}
.industry-delivery-table thead th{font-weight:600;background:var(--sky-2)}
.industry-delivery-table tbody th{font-weight:600;width:18%}
.industry-delivery-table td{color:var(--ink-2);width:41%}
.industry-delivery-note{margin-top:12px;font-size:12.5px;line-height:1.8;color:var(--ink-2)}
.industry-measurement-note{padding:24px 0 0;max-width:800px;font-size:14px;line-height:1.9}
.industry-measurement-note p{color:var(--ink-2);margin:6px 0 12px}
.industry-faq-list details{border-bottom:1px solid var(--line);padding:20px 0}
.industry-faq-list details:first-child{border-top:1px solid var(--line)}
.industry-faq-list summary{cursor:pointer;font-size:16px;font-weight:600;line-height:1.7;padding-right:16px}
.industry-faq-list summary::marker{color:var(--industry-accent)}
.industry-faq-list details p{margin-top:14px;color:var(--ink-2);font-size:14px;line-height:1.95;max-width:54em}
.industry-diagnosis{background:var(--sky-2);border-top:1px solid var(--line)}
.industry-contact-layout{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:70px;align-items:start}
.industry-contact-copy p{font-size:15px;color:var(--ink-2);line-height:1.95;margin-top:20px}
.industry-contact-copy h3{font-size:15px;margin-top:28px}
.industry-contact-copy ul{list-style:disc;padding-left:20px;color:var(--ink-2);font-size:14px;margin-top:12px;line-height:2.1}
.industry-catalog .lead-form{box-shadow:none;border:1px solid var(--line);padding:28px}
.industry-catalog .field{min-width:0}
.industry-catalog .field input,.industry-catalog .field textarea,.industry-catalog .field select{min-width:0}
.industry-catalog .form-note{color:var(--ink-2)}
.industry-catalog input::placeholder,.industry-catalog textarea::placeholder{color:#626F83;opacity:1}
.industry-catalog .form-success{color:var(--ink);border:1px solid var(--line);background:var(--card)}
.industry-catalog .form-success p{color:var(--ink-2)}
@media (max-width:1000px){
  .industry-results{grid-template-columns:repeat(2,minmax(0,1fr))}
  .industry-fit-layout,.industry-contact-layout{gap:32px}
  .industry-needs-grid{column-gap:32px}
}
@media (max-width:760px){
  .industry-fit-layout,.industry-contact-layout{grid-template-columns:minmax(0,1fr)}
  .industry-needs-grid{column-gap:24px}
}
@media (max-width:600px){
  .industry-catalog .industry-catalog-hero{padding:28px 0 32px}
  .industry-catalog-hero h1{font-size:28px!important;line-height:1.5}
  .industry-catalog .page-hero-sub{font-size:15px;margin-top:16px}
  .industry-jump-links{gap:16px 22px;margin-top:22px;font-size:13px}
  .industry-jump-links .btn{width:100%;font-size:14px}
  .industry-section{padding:48px 0}
  .industry-directory{padding:28px 0 42px}
  .industry-section-head{margin-bottom:22px}
  .industry-filters{gap:8px}
  .industry-filters button{font-size:12px;padding:9px 11px}
  .industry-results{grid-template-columns:minmax(0,1fr);gap:14px}
  .industry-option{padding:22px}
  .industry-option-heading p{min-height:0}
  .industry-needs-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .industry-needs-grid article{padding-left:18px}
  .industry-fit-checks{padding:24px}
  .industry-catalog .lead-form{padding:24px 20px}
  .industry-faq-list summary{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  html:has(.industry-catalog){scroll-behavior:auto}
  .industry-catalog .btn{transition:none}
  .industry-catalog .btn:hover{transform:none}
}