/* 五华图灵科技官网 · site.css（2026-09 视觉重构）
   视觉基准：codex\03-设计规范\设计规范.md。唯一改动：辅助文字色 #7C838B → #686E75，让暖白底上的小字对比度达到 4.5:1。
   规则：中文正文 ≥14px（主体 15-18px）、辅助 ≥12px、触摸目标 ≥44px、390 宽不横向溢出、不依赖外部字体 CDN。 */

:root {
  --paper: #F7F6F2;
  --paper-0: #FFFFFF;
  --paper-2: #EFEDE6;
  --ink-950: #17191C;
  --ink-800: #2B2F34;
  --ink-700: #4B5158;
  --ink-500: #686E75;
  --line: #E5E5E1;
  --line-strong: #CFCEC7;
  --brand: #0066FF;
  --brand-700: #0052CC;
  --brand-green: #00A676;
  --wash-blue: #EEF4FF;
  --night: #15181B;
  --night-2: #1D2125;
  --night-line: rgba(255, 255, 255, .12);
  --night-text: #E9EAE7;
  --night-muted: #A9ADB1;
  --night-link: #7FB2FF;
  --serif: "WHT Serif", "Noto Serif SC", "Source Han Serif SC", "Source Han Serif CN", "Songti SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
  --container: 1280px;
  --gutter: clamp(20px, 5vw, 80px);
  --radius: 12px;
  --shadow: 0 1px 2px rgba(23, 25, 28, .04), 0 16px 40px rgba(23, 25, 28, .07);
  --header-h: 72px;
}

/* ---------------------------------------------------------------- 基础 */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 16px); }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body { margin: 0; background: var(--paper); color: var(--ink-700); font-family: var(--sans); font-size: 17px; line-height: 1.8; -webkit-font-smoothing: antialiased; overflow-wrap: break-word; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: var(--brand); text-decoration: none; transition: color .2s; }
a:hover { color: var(--brand-700); }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3, h4, p, figure, blockquote, dl, dd { margin: 0; }
h1, h2, h3, h4 { color: var(--ink-950); font-weight: 600; }
ul, ol { margin: 0; padding: 0; }
.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; }
.container { width: 100%; max-width: calc(var(--container) + var(--gutter) * 2); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.skip-link { position: fixed; left: 16px; top: 12px; z-index: 100; padding: 10px 18px; border-radius: 8px; background: var(--ink-950); color: #fff; font-size: 15px; transform: translateY(-220%); transition: transform .2s; }
.skip-link:focus { transform: none; color: #fff; }
.muted { color: var(--ink-500); }

/* ---------------------------------------------------------------- 字体层级：标题用自托管宋体子集 */
h1, h2, .serif, .stat-num, .quote { font-family: var(--serif); }
h1, h2, h3 { text-wrap: balance; }
.display-1 { font-size: clamp(38px, 4.4vw, 64px); line-height: 1.16; letter-spacing: -.01em; }
.display-1.is-page { font-size: clamp(32px, 3.4vw, 48px); line-height: 1.24; }
.display-2 { font-size: clamp(28px, 3.3vw, 46px); line-height: 1.26; }
.kicker { margin-bottom: 14px; color: var(--brand); font-family: var(--sans); font-size: 14px; font-weight: 600; letter-spacing: .12em; }
.lead { max-width: 640px; margin-top: 20px; color: var(--ink-700); font-size: clamp(16px, 1.3vw, 18px); line-height: 1.9; }

/* ---------------------------------------------------------------- 页头与导航 */
.site-header { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid var(--line); background: rgba(247, 246, 242, .92); -webkit-backdrop-filter: saturate(160%) blur(14px); backdrop-filter: saturate(160%) blur(14px); }
.header-inner { display: flex; align-items: center; gap: 24px; height: var(--header-h); }
.brand { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; color: var(--ink-950); }
.brand:hover { color: var(--ink-950); }
.brand img { width: 32px; height: 32px; }
.brand-name { font-size: 18px; font-weight: 700; letter-spacing: .04em; white-space: nowrap; }
.nav-desktop { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.nav-desktop a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 14px; border-radius: 999px; color: var(--ink-800); font-size: 15px; white-space: nowrap; }
.nav-desktop a:hover { background: rgba(23, 25, 28, .05); color: var(--ink-950); }
.nav-desktop a[aria-current="page"] { color: var(--brand); font-weight: 600; }
.menu-toggle { display: none; }
.nav-mobile { max-height: calc(100vh - var(--header-h)); overflow-y: auto; padding-bottom: 20px; border-top: 1px solid var(--line); background: var(--paper); }
.nav-mobile a { display: flex; align-items: center; min-height: 52px; padding: 0 var(--gutter); border-bottom: 1px solid var(--line); color: var(--ink-950); font-size: 17px; }
.nav-mobile a[aria-current="page"] { color: var(--brand); font-weight: 600; }
.nav-mobile .nav-mobile-cta { justify-content: center; margin: 20px var(--gutter) 0; border: 0; border-radius: 999px; background: var(--brand); color: #fff; font-weight: 600; }
@media (max-width: 1023px) {
  .nav-desktop, .header-inner .header-cta { display: none; }
  .menu-toggle { display: inline-grid; flex-shrink: 0; place-content: center; gap: 6px; width: 44px; height: 44px; margin-left: auto; margin-right: -10px; padding: 0; border: 0; border-radius: 8px; background: transparent; cursor: pointer; }
  .menu-toggle span { display: block; width: 22px; height: 2px; border-radius: 2px; background: var(--ink-950); transition: transform .2s; }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
}
@media (min-width: 1024px) { .nav-mobile { display: none !important; } }

/* ---------------------------------------------------------------- 按钮与链接 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 26px; border: 1px solid transparent; border-radius: 999px; font-family: var(--sans); font-size: 16px; font-weight: 600; line-height: 1.2; white-space: nowrap; cursor: pointer; transition: background-color .2s, color .2s, border-color .2s; }
.btn-sm { min-height: 44px; padding: 0 20px; font-size: 15px; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-700); color: #fff; }
.btn-ghost { border-color: var(--line-strong); background: transparent; color: var(--ink-950); }
.btn-ghost:hover { border-color: var(--ink-950); color: var(--ink-950); }
.btn-light { background: #fff; color: var(--ink-950); }
.btn-light:hover { background: var(--paper); color: var(--ink-950); }
.actions { display: flex; flex-wrap: wrap; gap: 12px 16px; margin-top: 32px; }
.link-arrow { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; font-size: 15px; font-weight: 600; }
.link-arrow::after { content: "→"; transition: transform .2s; }
.link-arrow:hover::after { transform: translateX(3px); }
.section-more { margin-top: 28px; }

/* ---------------------------------------------------------------- 区块 */
.section { padding: clamp(72px, 9vw, 128px) 0; }
.section-white { background: var(--paper-0); }
.section-night { background: var(--night); color: var(--night-muted); }
.section-night h2, .section-night h3 { color: #fff; }
.section-night .kicker, .section-night .link-arrow { color: var(--night-link); }
.section-night .lead { color: var(--night-muted); }
.section-head { margin-bottom: clamp(40px, 5vw, 64px); }
.section-head.split { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 20px 64px; align-items: end; }
.section-head.split .lead { margin-top: 0; }
@media (max-width: 899px) { .section-head.split { grid-template-columns: minmax(0, 1fr); } }

/* ---------------------------------------------------------------- 首页首屏 */
.hero { position: relative; display: flex; flex-direction: column; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero-media { position: absolute; top: 0; right: 0; bottom: 0; z-index: 0; width: 64%; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: 72% 50%; }
.hero::after { content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: linear-gradient(90deg, var(--paper) 0%, var(--paper) 36%, rgba(247, 246, 242, .82) 48%, rgba(247, 246, 242, 0) 66%); }
.hero-grid { position: relative; z-index: 1; display: flex; align-items: center; min-height: 680px; padding-top: 64px; padding-bottom: 64px; }
.hero-copy { max-width: 700px; }
@media (min-width: 900px) and (max-width: 1199px) {
  .hero-media { width: 50%; }
  .hero::after { background: linear-gradient(90deg, var(--paper) 0%, var(--paper) 58%, rgba(247, 246, 242, .7) 72%, rgba(247, 246, 242, 0) 92%); }
  .hero-copy { max-width: 520px; }
}
.proof-list { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 28px; list-style: none; color: var(--ink-700); font-size: 14px; }
.proof-list li { display: inline-flex; align-items: center; gap: 8px; }
.proof-list li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--brand-green); }
@media (max-width: 899px) {
  .hero::after { display: none; }
  .hero-grid { order: 1; min-height: 0; padding-top: 44px; padding-bottom: 32px; }
  .hero-media { position: relative; order: 2; width: auto; margin: 0 var(--gutter) 40px; overflow: hidden; border-radius: var(--radius); aspect-ratio: 4 / 3; }
  .hero-media img { object-position: 64% 50%; }
}

/* ---------------------------------------------------------------- 数字条 */
.stats { border-bottom: 1px solid var(--line); background: var(--paper-0); }
.stats-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.stat { padding: 40px 32px 40px 0; }
.stat + .stat { padding-left: 32px; border-left: 1px solid var(--line); }
.stat-num { color: var(--ink-950); font-size: clamp(36px, 3.8vw, 52px); line-height: 1.1; }
.stat-label { margin-top: 10px; color: var(--ink-950); font-size: 16px; font-weight: 600; }
.stat-note { margin-top: 4px; color: var(--ink-500); font-size: 14px; line-height: 1.65; }
@media (max-width: 699px) {
  .stats-grid { grid-template-columns: minmax(0, 1fr); }
  .stat { padding: 26px 0; }
  .stat + .stat { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
}

/* ---------------------------------------------------------------- 网格与线框卡 */
.grid-2, .grid-3 { display: grid; gap: 32px 24px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 899px) { .grid-2, .grid-3 { grid-template-columns: minmax(0, 1fr); } }
.line-card { padding-top: 28px; border-top: 1px solid var(--ink-950); }
.line-card .num { color: var(--ink-500); font-size: 14px; font-variant-numeric: tabular-nums; }
.line-card h3 { margin-top: 12px; font-size: clamp(22px, 2vw, 26px); line-height: 1.4; }
.line-card > p:not(.num) { margin-top: 12px; font-size: 16px; line-height: 1.8; }
.line-card ul { margin-top: 18px; list-style: none; border-top: 1px solid var(--line); }
.line-card li { padding: 11px 0; border-bottom: 1px solid var(--line); color: var(--ink-800); font-size: 15px; line-height: 1.6; }
.line-card .link-arrow { margin-top: 10px; }
.customer-problem-grid { gap: 0 28px; }
.customer-problem { padding: 28px 0 30px; border-top: 1px solid var(--ink-950); }
.customer-problem:nth-child(n+3) { border-top-color: var(--line); }
.customer-problem .num { color: var(--brand); font-size: 14px; font-variant-numeric: tabular-nums; }
.customer-problem h3 { margin-top: 12px; font-size: clamp(22px, 2vw, 28px); line-height: 1.4; }
.customer-problem > p:last-child { max-width: 520px; margin-top: 10px; font-size: 16px; line-height: 1.85; }
.section-night .customer-problem { border-top-color: var(--night-line); }
.section-night .customer-problem h3 { color: #fff; }
.section-night .customer-problem > p:last-child { color: var(--night-muted); }
@media (max-width: 899px) { .customer-problem:nth-child(n+3) { border-top-color: var(--ink-950); } }
@media (max-width: 899px) { .customer-problem-grid { gap: 0; } }

/* ---------------------------------------------------------------- 产品卡与截图窗框 */
.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 48px 28px; }
@media (max-width: 1023px) { .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 639px) { .product-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; } }
.shot { display: block; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper-0); box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s; }
.shot img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; object-position: top center; }
.product-shot { display: block; border-radius: var(--radius); }
.product-shot:hover .shot { transform: translateY(-3px); box-shadow: 0 2px 4px rgba(23, 25, 28, .05), 0 24px 48px rgba(23, 25, 28, .1); }
.product-body { padding-top: 20px; }
.product-tag { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; color: var(--ink-500); font-size: 14px; }
.badge { display: inline-flex; align-items: center; min-height: 24px; padding: 0 10px; border-radius: 999px; background: var(--wash-blue); color: var(--brand-700); font-size: 13px; font-weight: 600; }
.product-name { margin-top: 6px; font-size: 26px; line-height: 1.35; }
.product-name a { color: var(--ink-950); }
.product-name a:hover { color: var(--brand); }
.product-desc { margin-top: 10px; font-size: 15px; line-height: 1.8; }
.product-actions { display: flex; flex-wrap: wrap; gap: 0 22px; margin-top: 6px; }
.fact-note { margin-top: 56px; padding: 22px 26px; border-left: 3px solid var(--brand); border-radius: 0 var(--radius) var(--radius) 0; background: var(--paper); color: var(--ink-700); font-size: 15px; line-height: 1.9; overflow-wrap: anywhere; }

/* ---------------------------------------------------------------- 案例卡 */
.case-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 48px 28px; }
@media (max-width: 1023px) { .case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 639px) { .case-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; } }
.case-media { display: block; overflow: hidden; border-radius: var(--radius); background: var(--paper-2); }
.case-media img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; transition: transform .6s; }
.case-card:hover .case-media img { transform: scale(1.04); }
.case-meta { margin-top: 18px; color: var(--ink-500); font-size: 14px; }
.case-title { margin-top: 6px; font-size: 23px; line-height: 1.4; }
.case-title a { color: var(--ink-950); }
.case-title a:hover { color: var(--brand); }
.case-text { margin-top: 8px; font-size: 15px; line-height: 1.8; }
.case-later { display: inline-flex; align-items: center; gap: 8px; margin-top: 12px; color: var(--ink-800); font-size: 14px; font-weight: 600; }
.case-later::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--brand-green); }
.section-night .case-meta, .section-night .case-text { color: var(--night-muted); }
.section-night .case-later { color: var(--night-text); }
.section-night .case-title a { color: #fff; }
.section-night .case-title a:hover { color: var(--night-link); }

/* ---------------------------------------------------------------- 流程线 */
.process { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); list-style: none; }
.process li { position: relative; padding: 30px 28px 0 0; border-top: 1px solid var(--line-strong); }
.process li::before { content: ""; position: absolute; top: -6px; left: 0; width: 11px; height: 11px; border: 2px solid var(--brand); border-radius: 50%; background: var(--paper); }
.section-white .process li::before { background: var(--paper-0); }
.process li:first-child::before { background: var(--brand); }
.step-num { color: var(--ink-500); font-size: 14px; font-variant-numeric: tabular-nums; }
.process h3 { margin-top: 8px; font-size: 23px; }
.process li > p:not(.step-num):not(.step-time) { margin-top: 8px; font-size: 15px; line-height: 1.8; }
.step-time { display: inline-block; margin-top: 14px; color: var(--brand-700); font-size: 14px; font-weight: 600; }
@media (max-width: 899px) {
  .process { grid-template-columns: minmax(0, 1fr); }
  .process li { padding: 0 0 36px 32px; border-top: 0; border-left: 1px solid var(--line-strong); }
  .process li::before { top: 2px; left: -6px; }
  .process li:last-child { padding-bottom: 0; border-left-color: transparent; }
}

/* ---------------------------------------------------------------- 何老师 */
.about-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(40px, 6vw, 96px); align-items: center; }
.about-media img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow); }
.about-media figcaption { margin-top: 14px; color: var(--ink-500); font-size: 14px; }
.quote { margin-top: 28px; padding-left: 20px; border-left: 2px solid var(--brand); color: var(--ink-950); font-size: clamp(20px, 1.8vw, 24px); line-height: 1.55; }
.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px 24px; margin-top: 32px; list-style: none; }
.principles li { padding-top: 14px; border-top: 1px solid var(--line); }
.principles strong { display: block; color: var(--ink-950); font-size: 16px; }
.principles span { display: block; margin-top: 4px; color: var(--ink-500); font-size: 14px; line-height: 1.65; }
@media (max-width: 899px) { .about-grid { grid-template-columns: minmax(0, 1fr); } .about-media { max-width: 420px; } }
@media (max-width: 599px) { .principles { grid-template-columns: minmax(0, 1fr); } }

/* ---------------------------------------------------------------- 给老板看的 AI 判断 */
.insight-layout { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(32px, 5vw, 80px); align-items: start; }
.insight-aside { position: sticky; top: calc(var(--header-h) + 24px); padding: 36px 32px; border-radius: var(--radius); background: var(--wash-blue); }
.insight-aside .lead { font-size: 16px; }
.article-list { list-style: none; border-top: 1px solid var(--ink-950); }
.article-row { border-bottom: 1px solid var(--line); }
.article-row a { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 6px 24px; padding: 24px 0; color: inherit; }
.article-row time { grid-row: span 2; padding-top: 3px; color: var(--ink-500); font-size: 14px; font-variant-numeric: tabular-nums; }
.article-row h3 { color: var(--ink-950); font-size: 18px; line-height: 1.55; transition: color .2s; }
.article-row p { color: var(--ink-700); font-size: 15px; line-height: 1.75; }
.article-row a:hover h3 { color: var(--brand); }
@media (max-width: 899px) { .insight-layout { grid-template-columns: minmax(0, 1fr); } .insight-aside { position: static; } }
@media (max-width: 599px) { .article-row a { grid-template-columns: minmax(0, 1fr); } .article-row time { grid-row: auto; padding-top: 0; } }

/* ---------------------------------------------------------------- 联系 */
.contact-band { border-top: 1px solid var(--line); background: var(--paper-0); }
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(40px, 6vw, 96px); align-items: center; }
.facts { margin-top: 28px; }
.facts div { display: grid; grid-template-columns: 88px minmax(0, 1fr); gap: 16px; padding: 12px 0; border-top: 1px solid var(--line); }
.facts dt { color: var(--ink-500); font-size: 14px; }
.facts dd { color: var(--ink-950); font-size: 15px; }
.qr-card { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 28px; align-items: center; padding: 32px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
.qr-card img { width: 220px; height: 220px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.qr-title { color: var(--ink-950); font-size: 18px; font-weight: 600; }
.qr-card p + p { margin-top: 8px; font-size: 15px; line-height: 1.8; }
.qr-note { color: var(--ink-500); font-size: 14px !important; }
.platforms { margin-top: 16px; list-style: none; font-size: 15px; }
.platforms li { display: flex; gap: 12px; padding: 9px 0; border-top: 1px solid var(--line); color: var(--ink-950); }
.platforms span { min-width: 52px; color: var(--ink-500); }
@media (max-width: 899px) { .contact-grid { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 599px) { .qr-card { grid-template-columns: minmax(0, 1fr); justify-items: start; padding: 24px; } .qr-card img { width: 200px; height: 200px; } }

/* ---------------------------------------------------------------- 子页首屏 */
.page-hero { padding: clamp(40px, 6vw, 80px) 0 clamp(56px, 7vw, 96px); border-bottom: 1px solid var(--line); }
.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 0 6px; margin-bottom: clamp(20px, 3vw, 40px); list-style: none; color: var(--ink-500); font-size: 14px; }
.crumbs a { display: inline-flex; align-items: center; min-height: 44px; color: var(--ink-700); }
.crumbs a:hover { color: var(--brand); }
.crumbs li + li::before { content: "/"; margin-right: 6px; color: var(--line-strong); }
.page-hero-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(32px, 5vw, 80px); align-items: center; }
.page-hero-grid.no-media { grid-template-columns: minmax(0, 1fr); max-width: 860px; }
.page-hero-media { overflow: hidden; border-radius: var(--radius); background: var(--paper-2); }
.page-hero-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.contact-hero-wrap .page-hero-media img { object-position: 28% 50%; }
@media (max-width: 899px) { .page-hero-grid { grid-template-columns: minmax(0, 1fr); } }

/* ---------------------------------------------------------------- 企业服务 */
.process + .service-list { margin-top: clamp(56px, 7vw, 88px); }
.service-list { border-top: 1px solid var(--ink-950); }
.service { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 5fr) minmax(0, 2fr); gap: 20px 48px; padding: 40px 0; border-bottom: 1px solid var(--line); }
.service-title .num { color: var(--ink-500); font-size: 14px; }
.service-title h3 { margin-top: 8px; font-size: clamp(24px, 2.2vw, 30px); }
.service-title .who { margin-top: 10px; font-size: 15px; line-height: 1.8; }
.service-points { list-style: none; }
.service-points li { position: relative; padding: 9px 0 9px 22px; color: var(--ink-800); font-size: 15px; line-height: 1.75; }
.service-points li::before { content: ""; position: absolute; top: 21px; left: 0; width: 10px; height: 1px; background: var(--brand); }
.service-price { text-align: right; }
.service-price strong { display: block; color: var(--ink-950); font-size: 30px; font-weight: 600; line-height: 1.2; }
.service-price span { display: block; margin-top: 6px; color: var(--ink-500); font-size: 14px; }
@media (max-width: 899px) {
  .service { grid-template-columns: minmax(0, 1fr); padding: 32px 0; }
  .service-price { display: flex; align-items: baseline; gap: 12px; text-align: left; }
  .service-price span { margin-top: 0; }
}
.faq { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 48px; border-top: 1px solid var(--ink-950); }
.faq-item { padding: 26px 0; border-bottom: 1px solid var(--line); }
.faq dt { color: var(--ink-950); font-size: 18px; font-weight: 600; line-height: 1.5; }
.faq dd { margin-top: 8px; font-size: 15px; line-height: 1.8; }
@media (max-width: 899px) { .faq { grid-template-columns: minmax(0, 1fr); } }

/* ---------------------------------------------------------------- 客户案例 */
.night-card { padding: 32px; border: 1px solid var(--night-line); border-radius: var(--radius); background: var(--night-2); }
.night-card .tag { color: var(--night-muted); font-size: 14px; }
.night-card h3 { margin-top: 8px; color: #fff; font-size: 26px; }
.night-card > p:not(.tag) { margin-top: 10px; color: var(--night-muted); font-size: 15px; line-height: 1.8; }
.night-card ul { margin-top: 18px; list-style: none; }
.night-card li { position: relative; padding: 10px 0 10px 18px; border-top: 1px solid var(--night-line); color: var(--night-text); font-size: 15px; line-height: 1.7; }
.night-card li::before { content: ""; position: absolute; top: 21px; left: 0; width: 6px; height: 6px; border-radius: 50%; background: var(--brand-green); }
@media (max-width: 599px) { .night-card { padding: 24px; } }
.industry-head, .industry-row { display: grid; grid-template-columns: 48px minmax(0, 2.2fr) minmax(0, 2.4fr) minmax(0, 3fr) minmax(0, 2.4fr); gap: 12px 28px; }
.industry-head { padding-bottom: 12px; border-bottom: 1px solid var(--ink-950); color: var(--ink-500); font-size: 14px; }
.industry-list { list-style: none; }
.industry-row { padding: 24px 0; border-bottom: 1px solid var(--line); font-size: 15px; line-height: 1.75; }
.industry-row .n { color: var(--ink-500); font-size: 14px; font-variant-numeric: tabular-nums; }
.industry-row h3 { color: var(--ink-950); font-size: 17px; line-height: 1.5; }
.ind-title { margin-top: 4px; color: var(--ink-700); font-size: 14px; }
.industry-row .label { display: none; }
.industry-row .result { color: var(--ink-950); font-weight: 600; }
.industry-row .result .muted { font-weight: 400; }
@media (max-width: 899px) {
  .industry-head { display: none; }
  .industry-list { border-top: 1px solid var(--ink-950); }
  .industry-row { grid-template-columns: 36px minmax(0, 1fr); gap: 6px 12px; }
  .industry-row > :nth-child(n+3) { grid-column: 2; }
  .industry-row .label { display: inline; margin-right: 8px; color: var(--ink-500); font-weight: 400; }
}

/* ---------------------------------------------------------------- 收束条 */
.cta-band { padding: clamp(56px, 7vw, 96px) 0; background: var(--ink-950); }
.cta-band .container { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px 40px; }
.cta-band h2 { color: #fff; }

/* ---------------------------------------------------------------- 页脚 */
.site-footer { background: var(--night); color: var(--night-muted); font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr)); gap: 40px; padding-top: 64px; padding-bottom: 44px; }
.site-footer .brand, .site-footer .brand:hover { color: #fff; }
.footer-brand p { margin-top: 16px; line-height: 1.9; }
.footer-title { margin-bottom: 10px; color: #fff; font-size: 14px; font-weight: 600; }
.footer-col a { display: flex; align-items: center; min-height: 36px; color: var(--night-muted); }
.footer-col a:hover { color: #fff; }
.footer-col p:not(.footer-title) { line-height: 1.9; }
.footer-note { display: block; margin-top: 12px; color: var(--night-muted); font-size: 12px; line-height: 1.7; }
.footer-bottom { position: relative; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 24px; padding-top: 18px; padding-bottom: 26px; font-size: 13px; }
.footer-bottom::before { content: ""; position: absolute; top: 0; left: var(--gutter); right: var(--gutter); border-top: 1px solid var(--night-line); }
.footer-beian { display: flex; flex-wrap: wrap; gap: 4px 20px; }
.footer-beian a { display: inline-flex; align-items: center; gap: 5px; min-height: 36px; color: var(--night-muted); }
.footer-beian a:hover { color: #fff; }
@media (max-width: 899px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
  .footer-col a, .footer-beian a { min-height: 44px; }
}
@media (max-width: 519px) { .footer-grid { grid-template-columns: minmax(0, 1fr); } }

/* ---------------------------------------------------------------- 图片化信息层：让页面有内容密度，但不靠廉价装饰 */
.section-has-backdrop, .contact-band-media, .section-has-panel { position: relative; overflow: hidden; }
.section-has-backdrop > .container, .contact-band-media > .container, .section-has-panel > .container { position: relative; z-index: 1; }
.section-backdrop { position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: .12; }
.section-backdrop img { width: 100%; height: 100%; object-fit: cover; object-position: center; filter: saturate(.7) contrast(.95); }
.section-has-backdrop::after { content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: linear-gradient(90deg, rgba(247,246,242,.98), rgba(247,246,242,.84) 54%, rgba(247,246,242,.94)); }
.section-white.section-has-backdrop::after { background: linear-gradient(90deg, rgba(255,255,255,.98), rgba(255,255,255,.85) 54%, rgba(255,255,255,.96)); }
.contact-band-media::after { content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: linear-gradient(90deg, rgba(255,255,255,.97), rgba(255,255,255,.82)); }
.contact-band-media .section-backdrop { opacity: .18; }
.line-media { overflow: hidden; margin: 0 0 24px; border-radius: 10px; background: var(--paper-2); }
.line-media img { width: 100%; aspect-ratio: 16 / 8; object-fit: cover; transition: transform .5s; }
.line-card:hover .line-media img { transform: scale(1.035); }
.insight-aside-media { overflow: hidden; margin: -36px -32px 28px; border-radius: var(--radius) var(--radius) 0 0; }
.insight-aside-media img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.service { grid-template-columns: 180px minmax(0, 3.4fr) minmax(0, 4fr) minmax(0, 1.3fr); align-items: start; }
.service-media { overflow: hidden; border-radius: 10px; background: var(--paper-2); }
.service-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.faq-panel-media { float: right; width: min(30%, 360px); margin: 0 0 24px 48px; overflow: hidden; border-radius: var(--radius); background: var(--paper-2); }
.faq-panel-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.night-card { overflow: hidden; }
.paid-media { margin: -32px -32px 26px; overflow: hidden; }
.paid-media img { width: 100%; aspect-ratio: 16 / 8; object-fit: cover; opacity: .92; }
.detail-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.detail-scene { overflow: hidden; border-radius: var(--radius); background: var(--paper-2); box-shadow: var(--shadow); }
.detail-scene img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.detail-copy { padding-top: 8px; }
.detail-points { list-style: none; border-top: 1px solid var(--ink-950); }
.detail-points li { padding: 16px 0 16px 22px; border-bottom: 1px solid var(--line); color: var(--ink-950); font-size: 16px; font-weight: 600; }
.detail-points li::before { content: "—"; display: inline-block; width: 22px; margin-left: -22px; color: var(--brand); }
.detail-copy .badge { margin-top: 24px; }
.case-industry-wrap { position: relative; }
.credential-section { border-top: 1px solid var(--line); }
.credential-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.credential-card { margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: 0 12px 30px rgba(16, 32, 46, .05); }
.credential-card img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: #f4f6f8; }
.credential-card figcaption { display: grid; gap: 6px; padding: 16px 16px 18px; }
.credential-card figcaption span { color: var(--brand); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.credential-card figcaption strong { color: var(--ink-950); font-size: 14px; line-height: 1.55; }
@media (max-width: 899px) {
  .service { grid-template-columns: 120px minmax(0, 1fr); gap: 18px 24px; }
  .service-media { grid-row: span 2; }
  .service-title, .service-points, .service-price { grid-column: 2; }
  .service-price { grid-row: 3; }
  .faq-panel-media { float: none; width: 100%; max-width: 520px; margin: 0 0 32px; }
  .detail-grid { grid-template-columns: minmax(0, 1fr); }
  .credential-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 599px) {
  body { font-size: 16px; }
  .line-media { margin-bottom: 20px; }
  .service { grid-template-columns: minmax(0, 1fr); }
  .service-media, .service-title, .service-points, .service-price { grid-column: auto; grid-row: auto; }
  .service-media { max-width: 100%; }
  .paid-media { margin: -24px -24px 22px; }
  .insight-aside-media { margin-left: -24px; margin-right: -24px; margin-top: -24px; }
  .credential-grid { grid-template-columns: minmax(0, 1fr); gap: 18px; }
}

/* ---------------------------------------------------------------- 手机与减少动效 */
@media (max-width: 599px) {
  body { font-size: 16px; }
  .display-1 { font-size: 36px; line-height: 1.22; }
  .display-1.is-page { font-size: 32px; }
  .display-2 { font-size: 28px; }
  .section { padding: 64px 0; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}