/* ============================================================
   广州引见科技有限公司官网 — 编辑式响应布局
   设计语言：瑞士编辑风 × 深藏青色块节奏
   · 大号章节数字锚点（01–06 ghost number）
   · 白 / 藏青 / 浅灰交替形成页面节奏
   · 呼应 LOGO 的"节点网络"图形语言
   · 无渐变、无阴影、无浮夸动效；hover 用色彩与位移表达
   ============================================================ */

:root {
  --navy: #1B2A52;
  --navy-dark: #121D3A;
  --navy-ink: #2D3F6B;
  --navy-50: #EEF1F7;
  --navy-100: #DCE2EE;
  --ink: #1F2430;
  --gray: #5A6172;
  --gray-light: #8A92A5;
  --gray-faint: #C5CBD6;
  --line: #E4E7ED;
  --line-soft: #EFF1F5;
  --bg-soft: #F7F8FA;
  --white: #FFFFFF;
  --maxw: 1240px;
  --header-height: 80px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 48px; }
:where(.hero-grid, .split-section, .diag-layout, .about-layout, .services-layout, .contact-grid) > * { min-width: 0; }

/* 通用过渡 */
.btn, .main-nav a, .card, .svc-row, .principle, .stepper-item,
.scene-card, .contact-card, .faq-item, .timeline-item, .platform-chip,
.cmp-panel, .qr-card {
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

/* ============================================================
   导航
   ============================================================ */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--white);
  position: sticky; top: 0; z-index: 100;
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-height);
}
.brand { display: flex; align-items: center; gap: 16px; }
.brand-mark { height: 40px; width: auto; flex-shrink: 0; }
.brand-divider { width: 1px; height: 30px; background: var(--line); flex-shrink: 0; }
.brand-text { display: flex; flex-direction: column; }
.brand-name { font-size: 17px; font-weight: 700; color: var(--navy); letter-spacing: 3px; line-height: 1.1; }
.brand-en { font-size: 9px; font-weight: 600; color: var(--gray-light); letter-spacing: 2.2px; margin-top: 5px; line-height: 1; }

.main-nav { display: flex; align-items: center; gap: 32px; }
.main-nav a {
  font-size: 15px; color: var(--gray); padding: 4px 0;
  border-bottom: 2px solid transparent; font-weight: 500;
}
.main-nav a:hover { color: var(--navy); }
.main-nav a.active { color: var(--navy); border-bottom-color: var(--navy); }
.main-nav .nav-cta {
  margin-left: 8px; padding: 9px 22px !important;
  background: var(--navy); color: var(--white);
  border-bottom: none !important; font-weight: 500;
}
.main-nav .nav-cta:hover { background: var(--navy-dark); color: var(--white); }
.main-nav .nav-cta.active { color: var(--white); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 11px; flex-shrink: 0; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--navy); margin: 5px 0; transition: 0.3s var(--ease); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   首屏 — 双栏：左文案 / 右品牌节点图 + 底部数据条
   ============================================================ */
.hero { padding: 72px 0 0; }
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  grid-template-areas: "copy visual" "stats stats"; gap: 56px 56px; align-items: center;
}
.hero-copy { grid-area: copy; }
.kicker-row { display: flex; align-items: center; gap: 14px; margin-bottom: 26px; }
.kicker-row::before { content: ""; width: 36px; height: 2px; background: var(--navy); }
.kicker-row span {
  font-size: 12px; letter-spacing: 2.6px; color: var(--gray);
  text-transform: uppercase; font-weight: 500;
}
.hero h1 {
  font-size: clamp(32px, 3vw, 43px); font-weight: 700; color: var(--navy); line-height: 1.38;
  margin-bottom: 24px; letter-spacing: -0.8px; text-wrap: balance;
}
.hero h1 em { font-style: normal; border-bottom: 4px solid var(--navy-100); padding-bottom: 2px; }
.hero-title-line { display: block; text-wrap: balance; }
.hero .sub { font-size: 17px; color: var(--gray); max-width: 580px; line-height: 1.9; }
.hero .actions { margin-top: 32px; display: flex; gap: 12px; flex-wrap: wrap; }

/* 品牌节点图面板 */
.hero-visual {
  grid-area: visual; border: 1px solid var(--line); padding: 18px; background: var(--bg-soft);
  position: relative; width: 100%;
}
.hero-visual::before {
  content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 4px;
  background: var(--navy);
}
.hero-visual svg { width: 100%; height: auto; display: block; }
.hero-visual .visual-caption {
  border-top: 1px solid var(--line-soft); padding-top: 14px; margin-top: 4px;
  font-size: 12px; color: var(--gray); text-align: center; letter-spacing: 0.3px;
}

/* 数据条 */
.stat-strip { grid-area: stats; border-top: 1px solid var(--line); width: 100%; }
.hero-brand-strip {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: baseline;
  padding: 18px 24px; border-bottom: 1px solid var(--line);
  font-size: 21px; line-height: 1.8; letter-spacing: 1.2px;
  font-weight: 500; color: var(--navy);
}
.hero-brand-strip > span, .hero-brand-strip > strong { white-space: nowrap; }
.hero-brand-strip strong { font-weight: 600; }
.hero-brand-strip .brand-strip-ending { color: var(--gray); }
.stat-strip .grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
}
.stat {
  padding: 26px 24px; border-left: 1px solid var(--line);
}
.stat:first-child { border-left: none; padding-left: 0; }
.stat .value { font-size: 30px; font-weight: 700; color: var(--navy); line-height: 1.2; letter-spacing: -0.5px; }
.stat .value .unit { font-size: 16px; font-weight: 600; }
.stat .label { font-size: 12px; color: var(--gray); margin-top: 8px; letter-spacing: 0.2px; }

/* ============================================================
   平台覆盖带
   ============================================================ */
.platform-strip { border-bottom: 1px solid var(--line); background: var(--white); }
.platform-strip .container {
  display: flex; align-items: center; gap: 24px; padding-top: 20px; padding-bottom: 20px;
  flex-wrap: wrap;
}
.platform-strip .strip-label {
  font-size: 13px; color: var(--gray-light); letter-spacing: 2px; flex-shrink: 0;
}
.platform-chips { display: flex; gap: 12px; flex-wrap: wrap; }
.platform-chip {
  font-size: 13px; color: var(--navy); font-weight: 500;
  border: 1px solid var(--line); padding: 5px 16px; background: var(--white);
}
.platform-chip:hover { border-color: var(--navy); }

/* ============================================================
   板块通用 — kicker 行 + ghost 大数字
   ============================================================ */
.section { padding: 88px 0; position: relative; }
.section.alt { background: var(--bg-soft); }
.section.navy { background: var(--navy); color: var(--white); }

.section-head { margin-bottom: 44px; position: relative; }
.section-head .ghost {
  position: absolute; right: 0; top: -12px;
  font-size: 104px; font-weight: 800; line-height: 1;
  color: var(--line-soft); user-select: none; pointer-events: none;
  font-family: Georgia, "Times New Roman", serif;
}
.section.navy .section-head .ghost { color: rgba(255,255,255,0.06); }
.section-head .kicker-row { margin-bottom: 18px; }
.section.navy .kicker-row::before { background: var(--white); }
.section.navy .kicker-row span { color: #8A9BBE; }
.section-head h2 {
  font-size: 36px; font-weight: 700; color: var(--navy); line-height: 1.4;
  letter-spacing: -0.5px; position: relative;
}
.section.navy .section-head h2 { color: var(--white); }
.section-head .sub-desc { margin-top: 18px; color: var(--gray); max-width: 640px; font-size: 16px; }
.section.navy .section-head .sub-desc { color: #C6CDDD; }

/* ============================================================
   痛点 — 三卡片
   ============================================================ */
.scene-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
.scene-card {
  border-top: 2px solid var(--navy); padding: 28px 0 0; background: var(--white);
  position: relative; display: flex; flex-direction: column;
}
.scene-card::before {
  content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 3px;
  background: var(--navy); transform: scaleX(0); transform-origin: left;
  transition: transform 0.5s var(--ease);
}
.scene-card:hover::before { transform: scaleX(1); }
.scene-card:hover { border-color: var(--navy); }
.scene-card .q-mark {
  font-family: Georgia, serif; font-size: 56px; line-height: 1;
  color: var(--navy-100); margin-bottom: 12px; font-weight: 700;
}
.scene-card .quote {
  font-size: 20px; color: var(--navy); font-weight: 700; line-height: 1.5;
  margin-bottom: 18px; min-height: 60px;
}
.scene-card .tag {
  display: inline-block; font-size: 12px; color: var(--navy); font-weight: 600;
  border: 1px solid var(--navy-100); padding: 4px 12px; margin-bottom: 16px;
  letter-spacing: 0.5px; align-self: flex-start;
}
.scene-card p { font-size: 15px; color: var(--gray); line-height: 1.9; }

/* ============================================================
   信任原则 — 藏青底三栏
   ============================================================ */
.section-principles .container { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 56px; }
.section-principles .section-head { margin: 0; }
.section-principles .ghost { top: -24px; font-size: 88px; }
.section-principles .sub-desc { font-size: 14px; }
.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.principle {
  padding: 8px 22px; border-right: 1px solid rgba(255,255,255,0.18);
}
.principle:first-child { padding-left: 0; }
.principle:last-child { border-right: none; }
.principle .x-icon {
  width: 32px; height: 32px; margin-bottom: 22px;
  border: 1px solid rgba(255,255,255,0.35);
  display: flex; align-items: center; justify-content: center;
}
.principle .x-icon svg { width: 14px; height: 14px; }
.principle h3 { font-size: 16px; color: var(--white); font-weight: 600; margin-bottom: 12px; }
.principle p { font-size: 14.5px; color: #B8C2D8; }
.principle:hover { background: rgba(255,255,255,0.04); }

/* ============================================================
   GEO vs SEO — 双面板对比
   ============================================================ */
.cmp-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.cmp-panel { border: 1px solid var(--line); background: var(--white); padding: 36px; }
.cmp-panel.geo { border: 1px solid var(--navy); background: var(--navy-50); }
.cmp-panel .panel-tag {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 1px;
  padding: 5px 12px; margin-bottom: 24px;
}
.cmp-panel.seo .panel-tag { background: var(--bg-soft); color: var(--gray); border: 1px solid var(--line); }
.cmp-panel.geo .panel-tag { background: var(--navy); color: var(--white); }
.cmp-panel h3 { font-size: 22px; color: var(--navy); font-weight: 700; margin-bottom: 28px; }
.cmp-row { display: flex; gap: 20px; padding: 16px 0; border-top: 1px solid var(--line-soft); }
.cmp-panel.geo .cmp-row { border-top-color: var(--navy-100); }
.cmp-row .k { flex: 0 0 72px; font-size: 13px; color: var(--gray-light); letter-spacing: 1px; padding-top: 3px; font-weight: 600; }
.cmp-row .v { flex: 1; font-size: 15px; color: var(--ink); line-height: 1.7; }
.cmp-panel.geo .cmp-row .v { color: var(--navy); font-weight: 500; }
.cmp-note {
  margin-top: 24px; text-align: center; font-size: 14px; color: var(--gray);
  padding: 16px 24px; border-top: 1px solid var(--line);
}
.cmp-note strong { color: var(--navy); }

/* ============================================================
   服务列表 — 大编号 + 线性图标
   ============================================================ */
.svc-list { display: flex; flex-direction: column; }
.svc-row {
  display: grid; grid-template-columns: 40px 40px minmax(0, 1fr) auto; gap: 20px;
  align-items: center; padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
.svc-row:first-child { border-top: 1px solid var(--line); }
.svc-row .num {
  font-size: 28px; font-weight: 600; color: var(--gray-light); letter-spacing: -1px;
  font-family: Georgia, serif; transition: color 0.4s var(--ease);
}
.svc-row .svc-icon {
  width: 40px; height: 40px; border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center; color: var(--navy);
}
.svc-row .svc-icon svg { width: 21px; height: 21px; }
.svc-row .body h3 { font-size: 19px; color: var(--navy); font-weight: 600; margin-bottom: 6px; }
.svc-row .body p { font-size: 15px; color: var(--gray); }
.svc-row .arrow {
  font-size: 14px; color: var(--gray-light); white-space: nowrap;
  transition: color 0.4s var(--ease), transform 0.4s var(--ease);
}
.svc-row:hover { background: var(--white); }
.svc-row:hover .num { color: var(--navy); }
.svc-row:hover .svc-icon { border-color: var(--navy); }
.svc-row:hover .arrow { color: var(--navy); }

/* ============================================================
   流程 — 水平步骤轴
   ============================================================ */
.stepper { display: grid; grid-template-columns: repeat(4, 1fr); position: relative; gap: 24px; }
.stepper::before {
  content: ""; position: absolute; top: 27px; left: 12%; right: 12%;
  height: 1px; background: var(--gray-faint);
}
.stepper-item { position: relative; text-align: center; padding: 0 12px; }
.stepper-item .dot {
  width: 54px; height: 54px; margin: 0 auto 22px;
  border: 2px solid var(--navy); background: var(--white); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700; color: var(--navy); font-family: Georgia, serif;
  position: relative; z-index: 1; transition: all 0.4s var(--ease);
}
.stepper-item:hover .dot { background: var(--navy); color: var(--white); }
.stepper-item .s-label { font-size: 12px; letter-spacing: 3px; color: var(--gray-light); display: block; margin-bottom: 8px; font-weight: 600; }
.stepper-item h3 { font-size: 19px; color: var(--navy); font-weight: 700; margin-bottom: 10px; }
.stepper-item p { font-size: 14px; color: var(--gray); }

/* ============================================================
   诊断入口带 — 藏青 + 白色二维码卡
   ============================================================ */
.diag-band { background: var(--navy); color: var(--white); padding: 72px 0; position: relative; overflow: hidden; }
.diag-band .ghost {
  position: absolute; right: -30px; top: -40px;
  font-size: 260px; font-weight: 800; line-height: 1;
  color: rgba(255,255,255,0.05); user-select: none; pointer-events: none;
  font-family: Georgia, serif;
}
.diag-band .container {
  display: grid; grid-template-columns: minmax(0, 1fr) 400px; gap: 72px; align-items: center;
  position: relative;
}
.diag-band .price-tag {
  display: inline-block; font-size: 13px; letter-spacing: 2px;
  color: #C6CDDD; margin-bottom: 20px; font-weight: 600; text-transform: uppercase;
}
.diag-band h2 { font-size: 36px; font-weight: 700; margin-bottom: 18px; line-height: 1.3; }
.diag-band .lead { color: #B8C2D8; font-size: 16px; max-width: 520px; margin-bottom: 36px; }

.qr-card {
  display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 6px 24px;
  align-content: center; background: var(--white); padding: 28px; color: var(--ink);
}
.qr-card .qr-code {
  grid-row: 1 / 4; width: 160px; height: 160px; border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  padding: 4px; background: var(--white);
}
.qr-code { cursor: zoom-in; }
.qr-code img { display: block; width: 100%; height: 100%; object-fit: contain; image-rendering: pixelated; }
.qr-card .qr-code:hover, .contact-card .qr-code:hover { border-color: var(--navy); }
html.qr-preview-open { overflow: hidden; }
.wechat-qr-dialog {
  position: fixed; inset: 0; width: min(600px, calc(100vw - 32px)); height: fit-content;
  max-width: none; max-height: calc(100dvh - 32px); margin: auto; padding: 24px;
  border: 1px solid var(--line); background: var(--white); color: var(--navy); overflow: hidden;
}
.wechat-qr-dialog::backdrop { background: rgba(18, 29, 58, .58); }
.wechat-qr-dialog .qr-dialog-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 44px; margin-bottom: 12px; font-size: 18px; font-weight: 600; }
.wechat-qr-dialog .qr-dialog-close { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border: 0; background: transparent; color: var(--navy); font-size: 28px; cursor: pointer; }
.wechat-qr-dialog img { display: block; width: var(--qr-preview-size, 225px); height: auto; aspect-ratio: 1; max-width: 100%; margin: 0 auto; object-fit: contain; image-rendering: pixelated; }
@media (max-height: 400px) {
  .wechat-qr-dialog { padding: 10px; }
  .wechat-qr-dialog .qr-dialog-head { margin-bottom: 8px; }
}
.qr-card h3 { font-size: 17px; color: var(--navy); font-weight: 700; align-self: end; }
.qr-card p { font-size: 13.5px; color: var(--gray); }
.qr-card .qr-phone { font-size: 18px; font-weight: 700; color: var(--navy); white-space: nowrap; }

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display: inline-flex; justify-content: center; align-items: center; min-height: 52px;
  padding: 12px 28px; font-size: 15px; font-weight: 500; text-align: center;
  border: 1px solid var(--navy); cursor: pointer; letter-spacing: 0.5px;
}
.btn-primary { background: var(--navy); color: var(--white); }
.btn-primary:hover { background: var(--navy-dark); border-color: var(--navy-dark); }
.btn-outline { background: transparent; color: var(--navy); }
.btn-outline:hover { background: var(--navy); color: var(--white); }
.btn-white { background: var(--white); border-color: var(--white); color: var(--navy); }
.btn-white:hover { background: var(--navy-50); }
.btn-ghost { background: transparent; border-color: rgba(255,255,255,0.4); color: var(--white); }
.btn-ghost:hover { border-color: var(--white); }

/* ============================================================
   内容页通用
   ============================================================ */
.page-head { padding: 60px 0 44px; border-bottom: 1px solid var(--line); position: relative; }
.page-head .container { position: relative; }
.page-head h1 { font-size: clamp(32px, 3.6vw, 44px); color: var(--navy); font-weight: 700; letter-spacing: -0.5px; line-height: 1.3; }
.page-head .page-sub { margin-top: 18px; color: var(--gray); font-size: 17px; max-width: 780px; }

/* 锚点跳转避开吸顶导航 */
[id] { scroll-margin-top: calc(var(--header-height) + 24px); }

/* 跳转链接（键盘/读屏用户） */
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 999;
  background: var(--navy); color: var(--white); padding: 12px 24px; font-size: 14px;
}
.skip-link:focus { left: 16px; top: 16px; }

/* 键盘焦点可见 */
a:focus-visible, button:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--navy); outline-offset: 3px;
}
.section.navy a:focus-visible, .diag-band a:focus-visible {
  outline-color: var(--white);
}

/* ============================================================
   诊断页：落地页双栏 + 粘性价格卡
   ============================================================ */
.diag-layout {
  display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 56px; align-items: start;
  grid-template-areas: "content summary";
}
.diag-layout > .prose { grid-area: content; }
.diag-side {
  grid-area: summary; position: sticky; top: calc(var(--header-height) + 24px);
  border: 1px solid var(--line); background: var(--white);
}
.diag-side .side-price {
  padding: 28px 24px 24px; border-bottom: 1px solid var(--line-soft); text-align: center;
}
.diag-side .side-label {
  font-size: 13px; letter-spacing: 3px; color: var(--gray-light); font-weight: 600;
}
.diag-side .side-amount {
  font-size: 44px; font-weight: 800; color: var(--navy); line-height: 1.15;
  letter-spacing: -1px; margin: 10px 0 6px;
}
.diag-side .side-note { font-size: 13px; color: var(--gray); }
.diag-side .side-list { list-style: none; padding: 20px 24px; }
.diag-side .side-list li {
  font-size: 14px; color: var(--ink); padding: 8px 0 8px 24px; position: relative;
}
.diag-side .side-list li::before {
  content: ""; position: absolute; left: 2px; top: 17px;
  width: 10px; height: 2px; background: var(--navy);
}
.diag-side .side-cta { padding: 0 24px 24px; }
.diag-side .side-cta .btn { display: block; width: 100%; text-align: center; padding: 14px 0; }
.diag-side .side-phone {
  text-align: center; font-size: 13.5px; color: var(--gray); margin-top: 14px;
}

/* 诊断包含什么：图标卡片组 */
.include-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin: 24px 0 8px; }
.include-item { border: 1px solid var(--line); padding: 24px 22px; background: var(--white); }
.include-item:last-child:nth-child(odd) { grid-column: 1 / -1; }
.include-item .inc-icon { color: var(--navy); margin-bottom: 12px; }
.include-item .inc-icon svg { width: 24px; height: 24px; }
.prose .include-item h3 { font-size: 16px; color: var(--navy); font-weight: 600; margin: 0 0 8px; }
.prose .include-item p { font-size: 14px; color: var(--gray); line-height: 1.85; }
.include-item:hover { border-color: var(--navy-100); }

/* 服务页页内锚点导航 */
.services-layout { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 48px; align-items: start; }
.svc-nav {
  position: sticky; top: calc(var(--header-height) + 24px);
  display: flex; flex-direction: column; align-items: stretch;
  border-top: 2px solid var(--navy);
}
.svc-nav a {
  font-size: 14px; color: var(--gray); border-bottom: 1px solid var(--line);
  padding: 16px 12px; background: var(--white);
}
.svc-nav a:hover, .svc-nav a:focus-visible { color: var(--navy); background: var(--navy-50); }

/* 关于页引言带 */
.about-quote { background: var(--navy); padding: 44px 0; }
.about-quote .container { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 48px; align-items: baseline; }
.about-quote p {
  color: var(--white); font-size: 24px; font-weight: 600; line-height: 1.6;
  max-width: 860px; letter-spacing: 0.5px; text-wrap: balance;
}
.about-quote .quote-tag {
  font-size: 13px; letter-spacing: 3px; color: #C6CDDD;
  display: block; font-weight: 600;
}

/* 404 */
.not-found { padding: 140px 0 120px; text-align: center; }
.not-found .code {
  font-size: 120px; font-weight: 800; color: var(--line); line-height: 1;
  font-family: Georgia, serif; margin-bottom: 24px;
}
.not-found h1 { font-size: 28px; color: var(--navy); margin-bottom: 14px; }
.not-found p { color: var(--gray); margin-bottom: 36px; }

.page-body { padding: 56px 0 88px; }
.prose { max-width: 800px; min-width: 0; overflow-wrap: break-word; }
.prose h2 {
  font-size: 26px; color: var(--navy); margin: 56px 0 20px; font-weight: 700;
  letter-spacing: -0.3px; padding-left: 16px; border-left: 3px solid var(--navy); line-height: 1.45;
}
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 19px; color: var(--navy); margin: 40px 0 14px; font-weight: 600; }
.prose p, .prose li { font-size: 16px; color: var(--ink); }
.prose > p { line-height: 1.95; }
.prose p + p { margin-top: 16px; }
.prose ul, .prose ol { padding-left: 24px; margin: 16px 0; }
.prose li { margin: 10px 0; }
.prose ul { list-style: none; padding-left: 0; }
.prose ul li { padding-left: 26px; position: relative; }
.prose ul li::before {
  content: ""; position: absolute; left: 2px; top: 13px;
  width: 10px; height: 2px; background: var(--navy);
}
.prose ol { padding-left: 28px; }
.prose table { width: 100%; border-collapse: collapse; margin: 28px 0; font-size: 15px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 14px 20px; text-align: left; }
.prose th { background: var(--navy); color: var(--white); font-weight: 600; }
.prose td:first-child { color: var(--navy); font-weight: 600; background: var(--navy-50); width: 140px; }
.prose strong { color: var(--navy); font-weight: 600; }
.prose .lead { font-size: 18px; color: var(--gray); line-height: 1.75; margin-bottom: 36px; }

/* 诊断页：包含什么 — 双列清单卡 */
.prose .diag-include {
  border: 1px solid var(--line); padding: 32px 36px; margin: 20px 0;
  background: var(--white);
}
.prose .diag-include li { margin: 14px 0; }

/* 时间线 — 左竖线 + 节点 */
.timeline { position: relative; padding-left: 36px; margin: 12px 0; }
.timeline::before {
  content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px;
  width: 2px; background: var(--navy-100);
}
.timeline-item { position: relative; padding: 26px 0 26px 24px; }
.timeline-item::before {
  content: ""; position: absolute; left: -36px; top: 36px;
  width: 12px; height: 12px; background: var(--white);
  border: 3px solid var(--navy); border-radius: 50%;
}
.timeline-item .day {
  font-size: 14px; color: var(--navy); font-weight: 700; letter-spacing: 2px;
  margin-bottom: 6px; text-transform: uppercase;
}
.timeline-item .desc h3 { font-size: 18px; color: var(--navy); font-weight: 600; margin: 0 0 6px; }
.timeline-item .desc p { font-size: 15px; color: var(--gray); }
.timeline-item:hover::before { background: var(--navy); }

/* 报告截图 */
.report-shot {
  border: 1px solid var(--line); padding: 20px; background: var(--white); margin: 32px 0;
  position: relative;
}
.report-shot::before {
  content: ""; position: absolute; top: -1px; left: -1px; width: 5px; height: 100%;
  background: var(--navy);
}
.report-shot img { width: 100%; }
.report-placeholder { padding: 48px; text-align: center; color: var(--gray-light); font-size: 14px; overflow-wrap: anywhere; }
.report-shot figcaption { font-size: 13px; color: var(--gray); margin-top: 12px; text-align: center; }

/* FAQ */
.faq-item { border-bottom: 1px solid var(--line); padding: 24px 0; }
.prose .faq-item h3 { font-size: 17px; color: var(--navy); font-weight: 600; margin: 0 0 12px; }
.faq-item p { font-size: 15px; color: var(--gray); }

/* 服务详情块 — 自动编号 */
.svc-blocks { counter-reset: svc; }
.svc-blocks .service-block { counter-increment: svc; }
.service-block {
  border: 1px solid var(--line); padding: 52px 52px 48px; margin-bottom: 36px; background: var(--white);
  position: relative;
}
.service-block::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 5px;
  background: var(--navy);
}
.service-block .blk-no {
  font-size: 15px; color: var(--gray-light); letter-spacing: 3px; font-weight: 700;
  margin-bottom: 10px; font-family: Georgia, serif;
}
.service-block h2 { font-size: 24px; color: var(--navy); font-weight: 700; margin-bottom: 8px; }
.service-block .tagline { font-size: 15px; color: var(--gray); margin-bottom: 26px; }
.service-block h3 { font-size: 15px; color: var(--navy); margin: 26px 0 10px; font-weight: 600; letter-spacing: 1px; }
.service-block ul { padding-left: 22px; }
.service-block li { font-size: 15px; margin: 7px 0; color: var(--gray); }
.service-block:hover { border-color: var(--gray-faint); }

/* 联系页 */
.contact-grid { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 24px; align-items: stretch; margin-top: 32px; }
.contact-card {
  border: 1px solid var(--line); padding: 40px; background: var(--bg-soft); text-align: center;
  position: relative;
}
.contact-card::before {
  content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 4px;
  background: var(--navy);
}
.contact-card:hover { border-color: var(--gray-faint); }
.contact-card h2 { font-size: 24px; color: var(--navy); font-weight: 700; margin-bottom: 8px; }
.contact-card .sub { font-size: 14px; color: var(--gray); margin-bottom: 32px; }
.contact-card .qr-code {
  width: 200px; height: 200px; border: 1px solid var(--line); margin: 0 auto 24px;
  display: flex; align-items: center; justify-content: center;
  padding: 4px; background: var(--white);
}
.contact-card .phone-big { font-size: 34px; color: var(--navy); font-weight: 700; letter-spacing: 1px; }
.contact-card .phone-label { font-size: 14px; color: var(--gray); margin-top: 8px; }

.contact-info-card { height: 100%; border: 1px solid var(--line); padding: 40px; background: var(--white); }
.contact-info-card h2 { font-size: 24px; color: var(--navy); font-weight: 700; margin-bottom: 8px; }
.contact-info-card .sub { font-size: 14px; color: var(--gray); margin-bottom: 32px; }
.contact-info-card .info-list { list-style: none; }
.contact-info-card .info-list li { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 20px; align-items: baseline; padding: 20px 0; border-bottom: 1px solid var(--line-soft); }
.contact-info-card .info-list li:last-child { border-bottom: none; }
.contact-info-card .info-list .label { font-size: 12px; color: var(--gray); letter-spacing: 1px; display: block; font-weight: 600; }
.contact-info-card .info-list .value { font-size: 16px; color: var(--ink); font-weight: 500; overflow-wrap: anywhere; }
.contact-info-card .info-list a.value:hover { color: var(--navy); }

/* ============================================================
   页脚
   ============================================================ */
.site-footer { background: var(--navy-dark); color: #AEB8CD; padding: 56px 0 28px; font-size: 14px; }
.site-footer .cols {
  display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.8fr) minmax(0, 1fr); gap: 48px;
  margin-bottom: 28px; padding-bottom: 36px; border-bottom: 1px solid rgba(255,255,255,0.12);
}
.site-footer .footer-brand { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }
.site-footer .footer-brand .brand-mark { height: 44px; }
.site-footer .footer-brand .brand-name { color: var(--white); }
.site-footer .footer-brand .brand-en { color: rgba(255,255,255,0.4); }
.site-footer .footer-heading { color: var(--white); font-size: 14px; margin-bottom: 18px; font-weight: 600; letter-spacing: 2px; }
.site-footer ul { list-style: none; }
.site-footer li { margin: 9px 0; overflow-wrap: anywhere; }
.site-footer a { color: #AEB8CD; transition: color 0.2s var(--ease); }
.site-footer a:hover { color: var(--white); }
.site-footer .copy {
  font-size: 13px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.site-footer .icp, .site-footer .icp a { color: #929DB6; }
.site-footer .icp a:hover { color: #9AA5BF; }

/* ============================================================
   滚动渐入（渐进增强，无JS时内容全量可见）
   ============================================================ */
html.js .reveal { opacity: 0; transition: opacity 0.45s var(--ease); }
html.js .reveal.in { opacity: 1; }

/* ============================================================
   服务详情 / 关于页侧栏 / 首页分栏 / 页头装饰
   ============================================================ */

/* 页头右侧大号装饰标签 */
.page-head .page-ghost {
  position: absolute; right: 48px; top: 0;
  font-size: 64px; font-weight: 800; color: var(--line-soft);
  font-family: Georgia, "Times New Roman", serif; letter-spacing: 3px;
  user-select: none; pointer-events: none; line-height: 1;
}

/* 服务页：结构化服务卡片 */
.svc-cards { display: flex; flex-direction: column; }
.svc-card {
  border: 1px solid var(--line); background: var(--white); margin-bottom: 24px;
  position: relative;
}
.svc-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--navy);
}
.svc-card-head {
  display: grid; grid-template-columns: 40px 44px minmax(0, 1fr); gap: 16px; align-items: start; padding: 28px;
}
.svc-card-no {
  font-family: Georgia, "Times New Roman", serif; font-size: 30px; font-weight: 600;
  color: var(--gray-light); line-height: 1; padding-top: 6px;
}
.svc-card-icon {
  width: 44px; height: 44px; border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center; color: var(--navy);
}
.svc-card-icon svg { width: 22px; height: 22px; }
.svc-card-title h2 {
  font-size: 22px; color: var(--navy); font-weight: 700; margin: 0 0 6px;
  letter-spacing: -0.2px; border: none; padding: 0; line-height: 1.3;
}
.svc-card-title .tagline { font-size: 14.5px; color: var(--gray); }
.svc-card-body {
  display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.8fr) minmax(0, 1.3fr);
  border-top: 1px solid var(--line-soft);
}
.svc-col { padding: 22px 24px; border-left: 1px solid var(--line-soft); }
.svc-col:first-child { border-left: none; }
.svc-col:nth-child(2) { background: var(--bg-soft); }
.svc-col h3 {
  font-size: 12px; letter-spacing: 1px; color: var(--gray);
  font-weight: 700; margin: 0 0 8px; text-transform: uppercase;
}
.svc-col p { font-size: 14.5px; color: var(--ink); line-height: 1.75; margin: 0; }
.svc-card-foot { padding: 20px 28px; border-top: 1px solid var(--line-soft); }
.svc-card-foot a {
  font-size: 14px; color: var(--navy); font-weight: 500;
  border-bottom: 1px solid var(--navy); padding-bottom: 1px;
}
.svc-card:hover { border-color: var(--gray-faint); }

/* 关于页：双栏 + 信息卡 */
.about-layout {
  display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 56px; align-items: start;
}
.about-side { position: sticky; top: calc(var(--header-height) + 24px); display: flex; flex-direction: column; gap: 20px; }
.about-card { border: 1px solid var(--line); background: var(--bg-soft); padding: 24px; }
.about-card.cta { background: var(--white); }
.about-card h3 {
  font-size: 12px; letter-spacing: 2.5px; color: var(--gray-light);
  font-weight: 700; margin: 0 0 16px; text-transform: uppercase;
}
.about-card ul { list-style: none; }
.about-card li {
  display: flex; justify-content: space-between; gap: 14px;
  padding: 10px 0; border-bottom: 1px solid var(--line-soft); font-size: 13.5px;
}
.about-card li:last-child { border-bottom: none; }
.about-card .k { color: var(--gray); flex-shrink: 0; }
.about-card .v { color: var(--ink); font-weight: 500; text-align: right; }
.about-card.cta p { font-size: 14px; color: var(--gray); margin-bottom: 16px; }
.about-card.cta .btn { display: block; width: 100%; text-align: center; padding: 12px 0; font-size: 14px; }

/* 首页服务区：左粘性标题 + 右列表 */
.split-section { display: grid; grid-template-columns: 248px minmax(0, 1fr); gap: 64px; align-items: start; }
.split-head { position: sticky; top: 120px; }
.split-head .ghost {
  position: static; display: block; font-size: 72px; line-height: 1;
  margin-bottom: 10px; color: var(--line); font-family: Georgia, serif;
}
.split-head h2 { font-size: 34px; font-weight: 700; color: var(--navy); line-height: 1.3; letter-spacing: -0.5px; }
.split-head .sub-desc { margin-top: 16px; color: var(--gray); font-size: 15px; }

/* ============================================================
   响应式：桌面 / 平板 / 手机统一断点
   ============================================================ */
@media (min-width: 961px) {
  /* 桌面沿用同一版心，以 48px 栏距、24px 卡片内边距统一节奏。 */
  .hero { padding-top: 56px; }
  .hero-grid { row-gap: 40px; }
  .hero-visual { padding: 16px; }
  .hero-visual svg { max-height: 320px; }
  .hero-visual svg text[font-size="13"] { font-size: 15px; }
  .stat { padding-block: 24px; }
  .section { padding-block: 80px; }
  .section-head { margin-bottom: 40px; }
  .section-principles .container { column-gap: 48px; }
  .split-section { column-gap: 48px; }
  .split-head h2 { font-size: 36px; line-height: 1.4; }
  .diag-band .container { column-gap: 48px; }
  .btn { line-height: 1.6; }

  .page-head { padding: 48px 0 40px; }
  .page-head h1 { font-size: clamp(36px, 3.2vw, 42px); }
  .page-head .page-sub { margin-top: 16px; }
  .page-body { padding: 48px 0 72px; }
  .diag-layout, .about-layout { column-gap: 48px; }

  .svc-card-head { padding: 24px; }
  .svc-col { padding: 24px; }
  .svc-col p { font-size: 15px; line-height: 1.8; }
  .svc-card-foot { padding: 16px 24px; }

  .diag-side .side-price { padding: 24px; }
  .diag-side .side-label { font-size: 12px; letter-spacing: 2px; }
  .diag-side .side-note { line-height: 1.75; }
  .diag-side .side-list { padding: 16px 24px; }
  .diag-side .side-list li { padding: 4px 0 4px 20px; line-height: 1.7; }
  .diag-side .side-list li::before { top: calc(.85em + 3px); }
  .diag-side .side-cta .btn { min-height: 52px; padding: 12px 16px; }
  .diag-side .side-phone { margin-top: 12px; line-height: 1.7; }

  .about-quote { padding-block: 40px; }
  .about-quote p { font-size: 22px; line-height: 1.75; }
  .about-layout > .prose.reveal { opacity: 1; }
  .about-card h3 { color: var(--gray); letter-spacing: 2px; }
  .about-card li { padding-block: 8px; }

  .page-body > .container > .prose > p { font-size: 15px; line-height: 1.85; color: var(--gray); }
  .contact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 24px; }
  .contact-card, .contact-info-card { padding: 32px; }
  .contact-card {
    display: grid; grid-template-columns: clamp(160px, 14vw, 200px) minmax(0, 1fr);
    grid-template-areas: "qr title" "qr note" "qr phone-label" "qr phone";
    gap: 8px 24px; align-content: center; text-align: left;
  }
  .contact-card h2, .contact-info-card h2 { font-size: 22px; line-height: 1.4; }
  .contact-card h2 { grid-area: title; margin: 0; }
  .contact-card .sub { grid-area: note; margin: 0; line-height: 1.8; }
  .contact-card .qr-code { grid-area: qr; align-self: center; width: 100%; height: auto; aspect-ratio: 1; margin: 0; padding: 4px; }
  .contact-card .phone-label { grid-area: phone-label; margin: 0; font-size: 13px; }
  .contact-card .phone-big { grid-area: phone; font-size: clamp(24px, 2.2vw, 30px); line-height: 1.4; letter-spacing: .2px; }
  .contact-card .phone-big a { display: inline-flex; align-items: center; min-height: 44px; }
  .contact-info-card .sub { margin-bottom: 24px; }
  .contact-info-card .info-list li { padding-block: 16px; }
}

@media (max-width: 1100px) {
  .container { padding-inline: 32px; }
  .main-nav { gap: 24px; }
  .hero-grid { column-gap: 36px; }
  .hero h1 { font-size: 36px; }
  .section-principles .container { gap: 32px; }
  .principle { padding-inline: 16px; }
  .split-section { grid-template-columns: 220px minmax(0, 1fr); gap: 40px; }
  .svc-row { grid-template-columns: 32px 36px minmax(0, 1fr); gap: 16px; }
  .svc-row .svc-icon { width: 36px; height: 36px; }
  .svc-row .arrow { grid-column: 3; margin-top: -8px; }
  .diag-layout, .about-layout { gap: 36px; grid-template-columns: minmax(0, 1fr) 296px; }
  .services-layout { grid-template-columns: 180px minmax(0, 1fr); gap: 32px; }
  .svc-col { padding: 20px; }
  .diag-band .container { gap: 40px; grid-template-columns: minmax(0, 1fr) 360px; }
  .qr-card { padding: 24px; grid-template-columns: 160px minmax(0, 1fr); gap: 6px 20px; }
  .qr-card .qr-code { width: 160px; height: 160px; }
  .contact-card, .contact-info-card { padding: 32px; }
  .contact-info-card .info-list li { grid-template-columns: 76px minmax(0, 1fr); gap: 16px; }
}

@media (min-width: 961px) and (max-width: 1100px) {
  .hero-grid, .split-section, .diag-layout, .about-layout, .services-layout,
  .diag-band .container, .section-principles .container { column-gap: 32px; }
  .svc-card-head { padding: 20px; }
  .svc-card-foot { padding-inline: 20px; }
}

@media (max-width: 960px) {
  :root { --header-height: 72px; }
  .container { padding-inline: 28px; }
  .main-nav {
    display: none; position: absolute; top: var(--header-height); left: 0; right: 0;
    background: var(--white); border-bottom: 1px solid var(--line);
    flex-direction: column; gap: 0; padding: 8px 28px 24px; align-items: stretch;
    max-height: calc(100dvh - var(--header-height)); overflow-y: auto;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 13px 0; border-bottom: 1px solid var(--line-soft); }
  .main-nav .nav-cta { margin: 16px 0 0; text-align: center; }
  .nav-toggle { display: block; }
  .hero { padding-top: 48px; }
  .hero h1 { font-size: 32px; }
  .hero .sub { font-size: 16px; }
  .hero-grid { grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 40px 28px; }
  .hero .actions .btn { padding-inline: 20px; }
  .stat { padding: 22px 18px; }
  .stat .value { font-size: 27px; }
  .section { padding-block: 64px; }
  .section-head { margin-bottom: 36px; }
  .section-head h2 { font-size: 30px; }
  .section-head .ghost { font-size: 80px; top: -8px; }
  .scene-grid { gap: 24px; }
  .scene-card .quote { font-size: 18px; }
  .scene-card .tag { font-size: 11px; padding: 4px 8px; }
  .section-principles .container { grid-template-columns: 1fr; gap: 32px; }
  .section-principles .section-head { max-width: 100%; }
  .principle { padding: 0 24px; }
  .cmp-panel { padding: 28px; }
  .cmp-row { gap: 12px; }
  .cmp-row .k { flex-basis: 60px; }
  .split-section { grid-template-columns: 1fr; gap: 32px; }
  .split-head { position: relative; padding-right: 100px; }
  .split-head .ghost { position: absolute; right: 0; top: -6px; font-size: 80px; }
  .split-head h2 { font-size: 30px; }
  .split-head .sub-desc { max-width: 560px; }
  .svc-row { grid-template-columns: 40px 40px minmax(0, 1fr) auto; }
  .svc-row .arrow { grid-column: auto; margin-top: 0; }
  .stepper { gap: 16px; }
  .stepper-item { padding-inline: 0; }
  .stepper-item h3 { font-size: 17px; }
  .diag-band { padding-block: 56px; }
  .diag-band .container { grid-template-columns: minmax(0, 1fr) 320px; gap: 32px; }
  .diag-band h2 { font-size: 30px; }
  .diag-band .price-tag { letter-spacing: 0.5px; }
  .qr-card { padding: 20px; grid-template-columns: 144px minmax(0, 1fr); gap: 6px 16px; }
  .qr-card .qr-code { width: 144px; height: 144px; padding: 4px; }
  .qr-card .qr-phone { font-size: 17px; }
  .page-head { padding: 44px 0 36px; }
  .page-head .page-ghost { display: none; }
  .page-head h1 { font-size: 36px; }
  .page-head .page-sub { font-size: 16px; }
  .page-body { padding: 40px 0 64px; }
  .diag-layout { grid-template-columns: minmax(0, 1fr); gap: 40px; grid-template-areas: "summary" "content"; }
  .diag-side { position: static; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .diag-side .side-price { display: flex; flex-direction: column; justify-content: center; border-bottom: 0; border-right: 1px solid var(--line-soft); }
  .diag-side .side-list { padding: 20px 24px; }
  .diag-side .side-cta { grid-column: 1 / -1; display: flex; align-items: center; gap: 24px; padding-top: 8px; }
  .diag-side .side-cta .btn { flex: 1; width: auto; }
  .diag-side .side-phone { margin: 0; }
  .about-layout { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .about-side { position: static; display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); align-items: start; }
  .about-quote .container { grid-template-columns: 1fr; gap: 16px; }
  .about-quote p { font-size: 22px; }
  .services-layout { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .svc-nav {
    flex-direction: row; flex-wrap: nowrap; position: sticky; top: var(--header-height); z-index: 5;
    width: 100%; overflow-x: auto; background: var(--white); border-top: 0; border-bottom: 1px solid var(--line);
    padding: 12px 0; gap: 8px; scrollbar-width: thin;
  }
  .svc-nav a { flex: 0 0 auto; white-space: nowrap; border: 1px solid var(--line); padding: 9px 16px; }
  .svc-card { scroll-margin-top: calc(var(--header-height) + 96px); }
  .svc-col { padding: 20px 24px; }
  .contact-grid { gap: 20px; }
  .contact-card, .contact-info-card { padding: 28px; }
  .contact-info-card .info-list li { display: block; padding: 16px 0; }
  .contact-info-card .info-list .label { margin-bottom: 5px; }
  .contact-card .phone-big { font-size: 30px; }
  .site-footer .cols { gap: 28px; grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr) minmax(0, 1fr); }
}

@media (max-width: 720px) {
  .container { padding-inline: 24px; }
  .brand { gap: 12px; }
  .brand-mark { height: 34px; }
  .brand-name { font-size: 16px; letter-spacing: 2px; }
  .brand-en { font-size: 8px; letter-spacing: 1.5px; }
  .brand-divider { height: 26px; }
  .hero { padding-top: 24px; }
  .hero-grid { grid-template-columns: minmax(0, 1fr); grid-template-areas: "copy" "stats" "visual"; gap: 20px; }
  .hero h1 { font-size: clamp(28px, 6vw, 36px); line-height: 1.45; letter-spacing: -0.5px; margin-bottom: 18px; }
  .hero .kicker-row { gap: 12px; margin-bottom: 16px; }
  .hero .kicker-row::before { width: 24px; flex-shrink: 0; }
  .hero .kicker-row span { font-size: 10px; letter-spacing: 1.6px; }
  .hero .sub { font-size: 15px; line-height: 1.85; }
  .hero .actions { gap: 10px; margin-top: 20px; }
  .hero .actions .btn { padding-inline: 16px; font-size: 14px; }
  .hero-visual { max-width: 440px; margin: 0 auto 28px; padding: 16px; }
  .hero-visual svg { max-height: 260px; }
  .hero-visual .visual-caption { font-size: 11px; letter-spacing: 0; }
  .hero-brand-strip { justify-content: flex-start; padding: 14px 0; font-size: 18px; letter-spacing: 0.6px; }
  .stat-strip .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat { padding: 16px; }
  .stat:nth-child(odd) { border-left: 0; padding-left: 0; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .stat .value { font-size: 26px; }
  .stat .label { font-size: 11px; text-wrap: balance; }
  .hero .stat-label-phrase { display: inline-block; white-space: nowrap; }
  .platform-strip .container { align-items: flex-start; flex-direction: column; gap: 12px; padding-block: 20px; }
  .platform-strip .strip-label { font-size: 11px; }
  .platform-chips { gap: 8px; }
  .platform-chip { font-size: 12px; padding: 5px 12px; }
  .section { padding-block: 52px; }
  .section-head { margin-bottom: 28px; padding-right: 40px; }
  .section-head h2 { font-size: 28px; }
  .section-head .ghost { font-size: 64px; top: -4px; }
  .section-head .sub-desc { font-size: 15px; margin-top: 16px; }
  .kicker-row { gap: 12px; margin-bottom: 16px; }
  .kicker-row span { font-size: 10px; letter-spacing: 2px; }
  .kicker-row::before { width: 24px; flex-shrink: 0; }
  .scene-grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .scene-card { padding-top: 20px; }
  .scene-card .q-mark { font-size: 44px; margin-bottom: 4px; }
  .scene-card .quote { min-height: 0; font-size: 20px; margin-bottom: 12px; }
  .scene-card .tag { font-size: 12px; }
  .principles { grid-template-columns: minmax(0, 1fr); }
  .principle, .principle:first-child {
    display: grid; grid-template-columns: 32px minmax(0, 1fr); gap: 8px 20px;
    border-right: 0; border-bottom: 1px solid rgba(255,255,255,0.18); padding: 24px 0;
  }
  .principle:last-child { border-bottom: 0; padding-bottom: 0; }
  .principle .x-icon { grid-row: 1 / 3; margin: 0; }
  .principle h3 { margin: 0; font-size: 17px; }
  .principle p { grid-column: 2; }
  .cmp-grid { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .cmp-panel { padding: 24px; }
  .cmp-panel h3 { font-size: 21px; margin-bottom: 20px; }
  .cmp-row { padding: 14px 0; }
  .cmp-row .k { flex-basis: 58px; font-size: 12px; }
  .cmp-row .v { font-size: 14px; }
  .cmp-note { padding: 16px 0 0; text-align: left; }
  .split-head { padding-right: 72px; }
  .split-head .ghost { font-size: 64px; }
  .split-head h2 { font-size: 28px; }
  .svc-row { grid-template-columns: 32px minmax(0, 1fr); gap: 8px 16px; padding: 24px 0; }
  .svc-row .num { align-self: start; font-size: 24px; }
  .svc-row .svc-icon { display: none; }
  .svc-row .body h3 { font-size: 18px; }
  .svc-row .body p { font-size: 14px; line-height: 1.85; }
  .svc-row .arrow { grid-column: 2; font-size: 12px; }
  .stepper { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .stepper::before { top: 24px; bottom: 24px; left: 23px; right: auto; width: 1px; height: auto; }
  .stepper-item { display: flex; gap: 24px; text-align: left; padding: 18px 0; align-items: flex-start; }
  .stepper-item .dot { margin: 0; flex-shrink: 0; width: 48px; height: 48px; }
  .stepper-item .s-label { margin-bottom: 4px; }
  .stepper-item h3 { font-size: 18px; margin-bottom: 6px; }
  .diag-band { padding-block: 48px; }
  .diag-band .container { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .diag-band h2 { font-size: 30px; }
  .diag-band .lead { font-size: 15px; margin-bottom: 24px; }
  .qr-card { max-width: 440px; width: 100%; grid-template-columns: 160px minmax(0, 1fr); gap: 6px 20px; padding: 24px; }
  .qr-card .qr-code { width: 160px; height: 160px; }
  .page-head { padding: 24px 0; }
  .page-head h1 { font-size: 30px; }
  .page-head .page-sub { font-size: 15px; line-height: 1.85; margin-top: 12px; }
  .page-body { padding: 24px 0 48px; }
  .prose h2 { font-size: 23px; margin-top: 36px; padding-left: 14px; }
  .prose p, .prose li { font-size: 15px; }
  .prose th, .prose td { padding: 12px; font-size: 13px; overflow-wrap: anywhere; }
  .prose td:first-child { width: 82px; }
  .include-grid { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .include-item { padding: 20px; }
  .include-item .inc-icon { margin-bottom: 12px; }
  .diag-side { grid-template-columns: minmax(0, 1fr); }
  .diag-layout { gap: 32px; }
  .diag-side .side-price { border-right: 0; border-bottom: 1px solid var(--line-soft); padding: 20px; }
  .diag-side .side-label { font-size: 12px; letter-spacing: 2px; }
  .diag-side .side-amount { font-size: 36px; margin: 8px 0 4px; }
  .diag-side .side-note { font-size: 12.5px; line-height: 1.7; }
  .diag-side .side-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 12px; padding: 12px 20px; }
  .diag-side .side-list li { font-size: clamp(12px, 3.3vw, 13px); padding: 6px 0 6px 16px; }
  .diag-side .side-list li::before { width: 7px; top: calc(.9em + 5px); }
  .diag-side .side-cta { display: block; padding: 0 20px 20px; }
  .diag-side .side-cta .btn { width: 100%; min-height: 52px; padding: 12px 16px; font-size: 14px; }
  .diag-side .side-phone { margin-top: 10px; font-size: 13px; }
  .timeline { padding-left: 26px; }
  .timeline-item { padding: 20px 0 20px 16px; }
  .timeline-item::before { left: -26px; top: 30px; }
  .report-shot { padding: 16px; }
  .report-shot > div { padding: 32px 16px !important; overflow-wrap: anywhere; }
  .prose .faq-item h3 { font-size: 16px; }
  .faq-item { padding-block: 20px; }
  .about-quote { padding-block: 24px; }
  .about-quote .container { gap: 12px; }
  .about-quote .quote-tag { font-size: 12px; letter-spacing: 2px; }
  .about-quote p { font-size: 18px; line-height: 1.8; letter-spacing: .2px; }
  .about-layout { gap: 28px; }
  /* 长正文默认可见，避免窄屏首屏被整块渐入动画隐藏。 */
  .about-layout > .prose.reveal { opacity: 1; }
  .about-side { grid-template-columns: minmax(0, 1fr); }
  .about-card { padding: 20px; }
  .about-card h3 { margin-bottom: 14px; }
  .services-layout { gap: 20px; }
  .svc-nav { margin-top: -8px; padding-block: 10px; }
  .svc-nav a { min-height: 44px; padding: 10px 14px; font-size: 13px; }
  .svc-card { margin-bottom: 20px; }
  .svc-card:last-child { margin-bottom: 0; }
  .svc-card-head { grid-template-columns: 28px minmax(0, 1fr); gap: 12px; padding: 20px; }
  .svc-card-no { font-size: 25px; }
  .svc-card-icon { display: none; }
  .svc-card-title h2 { font-size: 18px; }
  .svc-card-title .tagline { font-size: 14px; line-height: 1.85; margin-top: 6px; }
  .svc-card-body { grid-template-columns: minmax(0, 1fr); }
  .svc-col { border-left: 0; border-top: 1px solid var(--line-soft); padding: 16px 20px; }
  .svc-col:first-child { border-top: 0; }
  .svc-col p { font-size: 14px; }
  .svc-card-foot { padding: 8px 20px; }
  .svc-card-foot a { display: inline-flex; align-items: center; min-height: 44px; border-bottom: 0; padding-bottom: 0; text-decoration: underline; text-underline-offset: 4px; }
  .page-body > .container > .prose > p { font-size: 14px; line-height: 1.85; color: var(--gray); }
  .contact-grid { grid-template-columns: minmax(0, 1fr); margin-top: 24px; }
  .contact-card, .contact-info-card { padding: 20px; }
  .contact-card {
    display: grid; grid-template-columns: clamp(128px, 35vw, 160px) minmax(0, 1fr);
    grid-template-areas: "qr title" "qr note" "qr phone-label" "phone phone";
    gap: 6px 16px; align-content: center; text-align: left;
  }
  .contact-card h2 { grid-area: title; margin: 0; font-size: clamp(18px, 5vw, 20px); line-height: 1.4; }
  .contact-card .sub { grid-area: note; margin: 0; font-size: 13px; line-height: 1.75; }
  .contact-card .qr-code { grid-area: qr; align-self: center; width: 100%; height: auto; aspect-ratio: 1; margin: 0; padding: 4px; }
  .contact-card .phone-label { grid-area: phone-label; margin: 0; font-size: 12px; }
  .contact-card .phone-big { grid-area: phone; font-size: clamp(19px, 5.6vw, 24px); line-height: 1.4; letter-spacing: .2px; }
  .contact-card .phone-big a { display: flex; align-items: center; justify-content: center; min-height: 44px; }
  .contact-info-card h2 { font-size: 21px; line-height: 1.4; }
  .contact-info-card .sub { margin: 8px 0 16px; font-size: 13px; line-height: 1.75; }
  .contact-info-card .info-list li { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 12px; align-items: center; min-height: 60px; padding: 12px 0; }
  .contact-info-card .info-list .label { margin: 0; letter-spacing: .2px; }
  .contact-info-card .info-list .value { font-size: 15px; }
  .contact-info-card .info-list a.value { display: flex; align-items: center; min-height: 44px; }
  .site-footer { padding: 44px 0 24px; }
  .site-footer .cols { grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 32px 24px; padding-bottom: 28px; }
  .site-footer .cols > div:first-child { grid-column: 1 / -1; }
  .site-footer .copy { flex-direction: column; gap: 8px; font-size: 11px; }
  .not-found { padding: 88px 0; }
  .not-found .code { font-size: 88px; }
}

@media (max-width: 480px) {
  .hero .actions { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); }
}

@media (max-width: 380px) {
  .container { padding-inline: 20px; }
  .brand { gap: 10px; }
  .brand-mark { height: 30px; }
  .brand-en { font-size: 7px; letter-spacing: 1px; }
  .hero .actions .btn { padding-inline: 8px; font-size: 14px; }
  .qr-card { padding: 20px; grid-template-columns: 128px minmax(0, 1fr); gap: 6px 12px; }
  .qr-card .qr-code { width: 128px; height: 128px; padding: 4px; }
  .qr-card h3 { font-size: 15px; }
  .qr-card p { font-size: 12px; }
  .qr-card .qr-phone { font-size: 16px; }
  .contact-info-card .info-list a[href^="mailto:"] { font-size: 14px; }
}

/* 矮屏手机优先呈现定位、咨询入口和品牌横条。 */
@media (max-width: 380px) and (max-height: 640px) {
  .hero { padding-top: 20px; }
  .hero h1 { font-size: 26px; margin-bottom: 16px; }
  .hero .actions { margin-top: 18px; }
  .hero .actions .btn { min-height: 48px; }
  .hero-grid { row-gap: 16px; }
  .hero-brand-strip { padding-block: 12px; font-size: 17px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.js .reveal, html.js .reveal.in { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { transition-duration: 0s !important; }
}


/* 小屏（≤640px）：装饰数字缩小上移，避免与标题重叠 */
@media (max-width: 640px) {
  .section-head .ghost { font-size: 52px; top: -20px; }
}

/* SEO+GEO：沿用现有版心、色彩和间距，补充四维度与常见问题布局。 */
.hero-identity { color: var(--navy); font-size: 14px; line-height: 1.8; margin-bottom: 10px; }
.search-map { padding: 24px; }
.search-map-brand { width: fit-content; margin: 0 auto 28px; padding: 12px 32px; color: var(--white); background: var(--navy); font-weight: 600; }
.search-map-channels { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.search-map-channels > div { padding: 18px 10px; background: var(--white); border: 1px solid var(--line); text-align: center; }
.search-map-label { font-size: 11px; color: var(--gray); letter-spacing: 2px; }
.search-map-title { color: var(--navy); font-size: 20px; font-weight: 600; margin: 6px 0 8px; }
.search-map-channels p:last-child { color: var(--gray); font-size: 13px; line-height: 1.85; }
.search-map-platforms { font-size: 12px; color: var(--gray); text-align: center; padding: 18px 0; line-height: 1.9; }
.dimension-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.dimension-card { display: flex; flex-direction: column; min-width: 0; padding: 28px 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.dimension-card:hover, .dimension-card:focus-visible { background: var(--bg-soft); }
.dimension-number { color: var(--gray-light); font-family: Georgia, serif; font-size: 26px; line-height: 1; margin-bottom: 20px; }
.dimension-card h3 { color: var(--navy); font-size: 21px; line-height: 1.4; margin-bottom: 14px; }
.dimension-summary { color: var(--gray); font-size: 14px; line-height: 1.9; flex: 1; }
.dimension-metrics { margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 14px; line-height: 1.85; color: var(--navy); min-height: 100px; }
.dimension-metrics > span { display: block; color: var(--gray); font-size: 12px; margin-bottom: 6px; }
.dimension-link { display: flex; justify-content: space-between; align-items: center; margin-top: 20px; min-height: 24px; font-size: 13px; color: var(--navy); }
.dimension-detail .svc-card-head { grid-template-columns: 40px minmax(0, 1fr); }
.dimension-detail .svc-card-body { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.dimension-detail .svc-col { border: 0; }
.dimension-detail .svc-col:nth-child(even) { border-left: 1px solid var(--line-soft); background: transparent; }
.dimension-detail .svc-col:nth-child(n+3) { border-top: 1px solid var(--line-soft); }
.dimension-detail .svc-col h3, .svc-pending h3 { font-size: 13px; color: var(--navy); letter-spacing: .5px; }
.svc-pending { border-top: 1px solid var(--line-soft); background: var(--bg-soft); padding: 20px 24px; }
.svc-pending h3 { margin-bottom: 8px; font-weight: 600; }
.svc-pending p { font-size: 13px; line-height: 1.85; color: var(--gray); overflow-wrap: anywhere; }
.svc-pending p + p { margin-top: 6px; }
.anchor-alias { position: absolute; top: 0; scroll-margin-top: calc(var(--header-height) + 100px); }
.service-next { border: 1px solid var(--line); background: var(--bg-soft); padding: 28px; margin-top: 8px; }
.service-next h2, .service-boundary h2 { font-size: 23px; color: var(--navy); line-height: 1.5; margin-bottom: 12px; }
.service-next p, .service-boundary p { font-size: 15px; color: var(--gray); }
.service-next p + p { margin-top: 12px; }
.service-next .actions, .faq-contact .actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; margin-top: 20px; }
.service-boundary { padding: 32px 0 0; }
.text-link { display: inline-flex; align-items: center; min-height: 44px; color: var(--navy); text-decoration: underline; text-underline-offset: 5px; font-size: 14px; }
.faq-layout { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 48px; align-items: start; }
.faq-layout > * { min-width: 0; }
.faq-nav { display: flex; flex-direction: column; position: sticky; top: calc(var(--header-height) + 24px); border-top: 2px solid var(--navy); }
.faq-nav a { display: block; padding: 16px 12px; min-height: 44px; border-bottom: 1px solid var(--line); font-size: 14px; color: var(--gray); }
.faq-nav a:hover, .faq-nav a:focus-visible { color: var(--navy); background: var(--navy-50); }
.faq-content { max-width: none; }
.faq-group + .faq-group { margin-top: 44px; }
.faq-group .faq-item:last-child { border-bottom: 0; }
.faq-group .faq-item p { line-height: 1.9; color: var(--gray); }
.faq-contact { border-top: 1px solid var(--line); padding-top: 28px; margin-top: 32px; }
.faq-more { margin-top: 16px; }
@media (min-width: 961px) {
  .main-nav { gap: 24px; }
  .main-nav a { white-space: nowrap; }
}
@media (min-width: 961px) and (max-width: 1100px) {
  .main-nav { gap: 16px; }
  .main-nav a { font-size: 14px; }
  .main-nav .nav-cta { padding-inline: 16px !important; margin-left: 0; }
  .dimension-card { padding: 24px 20px; }
  .dimension-card h3 { font-size: 19px; }
  .faq-layout { grid-template-columns: 180px minmax(0, 1fr); gap: 32px; }
}
@media (max-width: 960px) {
  .dimension-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dimension-metrics { min-height: 0; }
  .search-map { padding: 16px; }
  .search-map-brand { margin-bottom: 20px; }
  .search-map-title { font-size: 18px; }
  .search-map-channels { gap: 8px; }
  .search-map-channels > div { padding: 16px 8px; }
  .faq-layout { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .faq-nav { flex-direction: row; flex-wrap: wrap; position: static; border-top: 0; border-bottom: 1px solid var(--line); gap: 8px; padding-bottom: 16px; }
  .faq-nav a { border: 1px solid var(--line); padding: 9px 16px; }
}
@media (max-width: 720px) {
  .hero-identity { font-size: 13px; margin-bottom: 8px; }
  .hero .actions .btn { padding-inline: 10px; }
  .search-map { margin-bottom: 0; }
  .search-map-brand { font-size: 15px; }
  .search-map .visual-caption { font-size: 12px; }
  .dimension-card { padding: 24px 20px; }
  .dimension-card h3 { font-size: 20px; }
  .dimension-number { margin-bottom: 16px; }
  .dimension-detail .svc-card-head { grid-template-columns: 28px minmax(0, 1fr); }
  .dimension-detail .svc-card-body { grid-template-columns: minmax(0, 1fr); }
  .dimension-detail .svc-col { padding: 20px; }
  .dimension-detail .svc-col:nth-child(even) { border-left: 0; }
  .dimension-detail .svc-col + .svc-col { border-top: 1px solid var(--line-soft); }
  .svc-pending { padding: 20px; }
  .service-next { padding: 24px 20px; }
  .service-next h2, .service-boundary h2 { font-size: 21px; }
  .service-next p, .service-boundary p { font-size: 14px; line-height: 1.85; }
  .faq-nav a { font-size: 13px; padding-inline: 12px; }
  .faq-group + .faq-group { margin-top: 32px; }
  .faq-contact .actions { gap: 8px 20px; }
}
@media (max-width: 600px) {
  .dimension-grid { grid-template-columns: minmax(0, 1fr); }
  .dimension-metrics { margin-top: 18px; }
  .dimension-link { margin-top: 12px; }
  .svc-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); overflow: visible; gap: 8px; }
  .svc-nav a { display: flex; align-items: center; justify-content: center; min-height: 44px; padding: 8px 12px; }
  .svc-card, .anchor-alias { scroll-margin-top: calc(var(--header-height) + 136px); }
}
@media (max-width: 380px) {
  .hero .actions { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); }
  .hero .actions .btn { font-size: 13px; padding-inline: 8px; }
  .faq-nav { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; }
  .faq-nav a { padding-inline: 4px; text-align: center; white-space: nowrap; }
}