/* 橙轩智能 · 中小企业数字化应用中心
   静态高保真稿：无外部字体、脚本或图片依赖。 */
:root {
  --navy-950: #081722;
  --navy-900: #0d2130;
  --navy-800: #153247;
  --navy-700: #21465e;
  --ink: #142b3a;
  --ink-soft: #496170;
  --ink-muted: #6b7f8b;
  --paper: #f3f6f7;
  --surface: #ffffff;
  --surface-soft: #eaf0f2;
  --line: #d5e0e4;
  --line-strong: #b8c9d0;
  --orange: #f4b860;
  --orange-bright: #f5a442;
  --orange-soft: #fff1dc;
  --orange-deep: #8a4c12;
  --orange-glow: rgba(244, 154, 54, .18);
  --blue: #236a91;
  --blue-soft: #e4f0f6;
  --green: #167154;
  --green-soft: #e2f3eb;
  --red: #a23b36;
  --red-soft: #fae9e7;
  --shadow-sm: 0 5px 18px rgba(8, 23, 34, .07);
  --shadow-lg: 0 28px 70px rgba(4, 16, 25, .2);
  --radius-sm: 7px;
  --radius: 13px;
  --radius-lg: 22px;
  --shell: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-underline-offset: .22em; }
button, input, select, textarea { font: inherit; }
button, select { cursor: pointer; }
button { color: inherit; }
input, textarea { color: var(--ink); }
h1, h2, h3, h4, p, ul, ol { margin-top: 0; }
h1, h2, h3, h4 { line-height: 1.3; }
p:last-child, ul:last-child, ol:last-child { margin-bottom: 0; }
[hidden] { display: none !important; }
::selection { color: var(--navy-950); background: var(--orange); }
:focus-visible { outline: 3px solid #2d83c2; outline-offset: 3px; }
.skip-link {
  position: fixed;
  z-index: 999;
  top: 8px;
  left: 8px;
  padding: 10px 16px;
  color: var(--navy-950);
  background: var(--orange);
  border-radius: var(--radius-sm);
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }
.shell { width: min(var(--shell), calc(100% - 56px)); margin-inline: auto; }
.narrow { width: min(860px, calc(100% - 56px)); margin-inline: auto; }
.icon { width: 24px; height: 24px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.muted { color: var(--ink-soft); }
.small { font-size: 13px; }
.text-link { color: var(--orange-deep); font-weight: 700; }
.nowrap { white-space: nowrap; }

/* 顶部导航 */
.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  color: #fff;
  background: rgba(13, 33, 48, .97);
  border-bottom: 1px solid rgba(244, 184, 96, .32);
  backdrop-filter: blur(16px);
}
.site-header::before { content: ""; position: absolute; inset: 0 0 auto; height: 2px; background: linear-gradient(90deg, #d97b25, var(--orange), #d97b25); }
.header-inner { width: min(1440px, calc(100% - 40px)); min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: #fff; text-decoration: none; flex: none; }
.brand-mark { width: 38px; height: 38px; }
.brand-logo { display: block; width: 142px; height: auto; }
.brand-copy { font-size: 18px; font-weight: 800; letter-spacing: .02em; line-height: 1.25; white-space: nowrap; }
.brand-copy small { display: block; margin-top: 4px; color: #e7b878; font-size: 10px; font-weight: 500; letter-spacing: .12em; }
.main-nav { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.main-nav > a { flex: none; white-space: nowrap; }
.main-nav > a:not(.button) { position: relative; color: #d5e2e9; text-decoration: none; padding-block: 10px; }
.main-nav > a:not(.button)::after { content: ""; position: absolute; right: 0; bottom: 3px; left: 0; height: 2px; background: var(--orange); transform: scaleX(0); transform-origin: left; transition: transform .2s ease; }
.main-nav > a:hover::after, .main-nav > a[aria-current="page"]::after { transform: scaleX(1); }
.main-nav > a[aria-current="page"] { color: #fff; }
.nav-toggle { display: none; width: 44px; height: 44px; padding: 10px; color: #fff; background: transparent; border: 1px solid #587082; border-radius: var(--radius-sm); }
.nav-toggle span { display: block; width: 100%; height: 2px; margin: 5px 0; background: currentColor; transition: transform .2s, opacity .2s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 通用组件 */
.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 19px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: 14px;
  font-weight: 750;
  line-height: 1.4;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}
.button:hover { transform: translateY(-1px); }
.button-primary { color: #281b09; background: linear-gradient(135deg, #ffd083 0%, var(--orange) 48%, var(--orange-bright) 100%); border-color: #f5b25a; box-shadow: 0 7px 22px rgba(238, 149, 50, .2); }
.button-primary:hover { background: linear-gradient(135deg, #ffdc9c, #ffc36f); border-color: #ffd18c; box-shadow: 0 9px 26px rgba(238, 149, 50, .28); }
.button-dark { color: #fff; background: var(--navy-900); border-color: var(--navy-900); }
.button-dark:hover { background: var(--navy-800); }
.button-outline { color: var(--ink); background: transparent; border-color: var(--line-strong); }
.button-outline:hover { background: var(--surface); border-color: var(--ink-soft); }
.button-light { color: #fff; background: transparent; border-color: #738c9c; }
.button-light:hover { background: rgba(255, 255, 255, .08); }
.button-small { min-height: 39px; padding: 7px 13px; font-size: 13px; }
.button .icon { width: 18px; height: 18px; }
.button:disabled { cursor: not-allowed; opacity: .55; transform: none; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; margin-bottom: 18px; color: var(--blue); font-size: 13px; font-weight: 750; letter-spacing: .08em; }
.eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--orange); }
.hero .eyebrow, .page-hero .eyebrow { color: #f3c582; }
.status-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #64c99c; box-shadow: 0 0 0 4px rgba(100, 201, 156, .11); }
.tag { display: inline-flex; align-items: center; gap: 5px; width: fit-content; padding: 3px 8px; color: var(--navy-700); background: var(--surface-soft); border-radius: 5px; font-size: 11px; font-weight: 750; line-height: 1.5; white-space: nowrap; }
.tag-orange { color: var(--orange-deep); background: var(--orange-soft); }
.tag-green { color: var(--green); background: var(--green-soft); }
.tag-blue { color: #205d80; background: var(--blue-soft); }
.tag-outline { background: transparent; border: 1px solid var(--line-strong); }
.section { padding: 90px 0; }
.section-compact { padding: 62px 0; }
.section-white { background: var(--surface); border-block: 1px solid var(--line); }
.section-dark { color: #fff; background: var(--navy-900); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 40px; margin-bottom: 36px; }
.section-heading > div:first-child { max-width: 790px; }
.section-heading h2 { margin-bottom: 12px; font-size: clamp(28px, 3vw, 42px); letter-spacing: -.035em; }
.section-heading p { max-width: 65ch; margin-bottom: 0; color: var(--ink-soft); font-size: 15px; }
.section-dark .section-heading p { color: #b8ccd7; }
.section-number { color: var(--orange-deep); font-size: 12px; font-weight: 800; letter-spacing: .16em; }
.section-dark .section-number { color: var(--orange); }
.notice { display: flex; align-items: flex-start; gap: 10px; padding: 14px 16px; color: var(--ink-soft); background: var(--surface-soft); border-left: 3px solid var(--blue); font-size: 13px; }
.notice .icon { width: 19px; height: 19px; margin-top: 2px; color: var(--blue); }
.notice a { color: var(--blue); font-weight: 600; }
.inline-arrow { display: inline-flex; align-items: center; gap: 7px; color: var(--orange-deep); font-size: 13px; font-weight: 750; text-decoration: none; }
.section-dark .inline-arrow, .hero .inline-arrow, .page-hero .inline-arrow, .next-example .inline-arrow { color: var(--orange); }
.inline-arrow::after { content: "→"; transition: transform .18s; }
.inline-arrow:hover::after { transform: translateX(3px); }

/* 首页首屏 */
.hero { position: relative; overflow: hidden; color: #fff; background: radial-gradient(circle at 12% 14%, rgba(244, 154, 54, .12), transparent 31%), radial-gradient(circle at 88% 82%, rgba(244, 154, 54, .09), transparent 32%), var(--navy-900); }
.hero::before { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(90deg, rgba(137, 176, 198, .07) 1px, transparent 1px), linear-gradient(rgba(137, 176, 198, .07) 1px, transparent 1px); background-size: 52px 52px; mask-image: linear-gradient(to right, #000, transparent 82%); }
.hero::after { content: ""; position: absolute; width: 620px; height: 620px; top: -250px; right: -120px; border-radius: 50%; background: var(--orange-glow); filter: blur(1px); pointer-events: none; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, .96fr) minmax(480px, 1.04fr); gap: 58px; align-items: center; min-height: 680px; padding-block: 62px 72px; }
.hero-copy h1 { max-width: 690px; margin-bottom: 23px; font-size: clamp(39px, 4.2vw, 62px); font-weight: 850; letter-spacing: -.055em; line-height: 1.16; }
.hero-copy h1 span { color: var(--orange); background: linear-gradient(105deg, #ffd58c 8%, var(--orange) 52%, #f3a047 96%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-lead { max-width: 590px; margin-bottom: 28px; color: #c8d9e2; font-size: 16px; line-height: 1.9; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; }
.hero-notes { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 25px; color: #a9c0cd; font-size: 12px; }
.hero-notes span { display: inline-flex; align-items: center; gap: 7px; }
.hero-notes span::before { content: "✓"; color: var(--orange); font-weight: 800; }
.app-launcher { overflow: hidden; color: var(--ink); background: #f8fafb; border: 1px solid rgba(244, 184, 96, .72); border-radius: 17px; box-shadow: 0 28px 70px rgba(4, 16, 25, .26), 0 0 0 4px rgba(244, 184, 96, .06); }
.window-bar { display: flex; min-height: 47px; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 16px; color: #f4d3a5; background: linear-gradient(90deg, #18374b, #273c48); border-top: 3px solid var(--orange); font-size: 11px; }
.window-title { display: flex; align-items: center; gap: 9px; font-weight: 750; letter-spacing: .05em; }
.window-dots { display: flex; gap: 5px; }
.window-dots i { width: 6px; height: 6px; background: #6f8b9c; border-radius: 50%; }
.launcher-body { padding: 22px; }
.launcher-greeting { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 15px; }
.launcher-greeting h2 { margin-bottom: 3px; font-size: 19px; letter-spacing: -.02em; }
.launcher-greeting p { color: var(--ink-muted); font-size: 11px; }
.search-field { position: relative; margin-bottom: 17px; }
.search-field .icon { position: absolute; top: 50%; left: 12px; width: 17px; height: 17px; color: var(--ink-muted); transform: translateY(-50%); pointer-events: none; }
.search-field input { width: 100%; height: 39px; padding: 8px 12px 8px 38px; background: #fff; border: 1px solid var(--line); border-radius: 6px; font-size: 12px; }
.launcher-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 9px; }
.launcher-tile { display: flex; min-width: 0; min-height: 97px; flex-direction: column; align-items: flex-start; justify-content: space-between; gap: 12px; padding: 13px 11px 11px; color: var(--ink); background: #fff; border: 1px solid #dfe7ea; border-radius: 8px; text-decoration: none; font-size: 11px; font-weight: 700; transition: border-color .18s, transform .18s, box-shadow .18s; }
.launcher-tile:hover { border-color: #91afbf; box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.launcher-tile .app-icon { display: grid; width: 32px; height: 32px; place-items: center; color: var(--navy-700); background: var(--surface-soft); border-radius: 7px; }
.launcher-tile:nth-child(3n+1) .app-icon { color: var(--orange-deep); background: var(--orange-soft); }
.launcher-tile .icon { width: 19px; height: 19px; }
.launcher-tile span:last-child { overflow-wrap: anywhere; }
.launcher-empty { grid-column: 1 / -1; padding: 24px; color: var(--ink-muted); text-align: center; font-size: 12px; }
.launcher-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 16px; padding-top: 13px; color: var(--ink-muted); border-top: 1px solid var(--line); font-size: 10px; }
.launcher-foot span { display: inline-flex; align-items: center; gap: 7px; }
.value-strip { background: #e4ecef; border-bottom: 1px solid #cad9df; }
.value-strip-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.value-item { display: grid; grid-template-columns: auto 1fr; gap: 13px; align-items: center; padding: 22px 25px; border-left: 1px solid #c7d6dc; }
.value-item:last-child { border-right: 1px solid #c7d6dc; }
.value-item b { color: var(--navy-700); font-size: 24px; font-weight: 500; letter-spacing: -.04em; }
.value-item strong { display: block; font-size: 14px; }
.value-item span { color: var(--ink-soft); font-size: 12px; }

/* 首页内容 */
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.pain-card { position: relative; min-height: 205px; padding: 25px; background: var(--surface); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pain-card::before { content: ""; position: absolute; top: -1px; left: -1px; width: 42px; height: 3px; background: var(--orange); }
.pain-card .icon { width: 26px; height: 26px; margin-bottom: 20px; color: var(--navy-700); }
.pain-card h3 { margin-bottom: 9px; font-size: 17px; }
.pain-card p { color: var(--ink-soft); font-size: 13px; }
.pain-answer { display: block; margin-top: 15px; color: var(--blue); font-size: 12px; font-weight: 750; }
.category-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.category-card { display: flex; min-height: 330px; flex-direction: column; padding: 22px 19px; background: #f7f9fa; border: 1px solid var(--line); border-top: 3px solid var(--navy-700); }
.category-card:nth-child(2) { border-top-color: var(--orange); }
.category-card:nth-child(3) { border-top-color: #4f819c; }
.category-card:nth-child(4) { border-top-color: #57947e; }
.category-card:nth-child(5) { border-top-color: #7c718e; }
.category-card h3 { margin: 15px 0 8px; font-size: 18px; }
.category-card > p { color: var(--ink-soft); font-size: 12px; }
.category-card ul { margin: 12px 0 22px; padding: 0; list-style: none; }
.category-card li { padding: 7px 0; color: #334e5e; border-bottom: 1px solid #e3eaed; font-size: 12px; }
.category-card .inline-arrow { margin-top: auto; }
.example-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.example-card { overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.example-visual { position: relative; min-height: 220px; padding: 25px; overflow: hidden; background: #dfe9ed; }
.example-card:nth-child(2) .example-visual { background: #e8e5dc; }
.example-card:nth-child(3) .example-visual { background: #e1e9e4; }
.example-card:nth-child(4) .example-visual { background: #e5e3eb; }
.mini-window { position: absolute; right: -18px; bottom: -30px; left: 25px; min-height: 200px; padding: 16px; background: #fff; border: 1px solid #bfcfd5; border-radius: 10px 10px 0 0; box-shadow: 0 14px 35px rgba(21, 50, 71, .12); }
.mini-window-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 1px solid var(--line); font-size: 11px; font-weight: 750; }
.mini-lines { display: grid; gap: 8px; }
.mini-line { display: grid; grid-template-columns: 1.4fr 1fr .7fr; gap: 9px; align-items: center; min-height: 26px; padding: 4px 7px; background: #f1f5f6; border-radius: 4px; }
.mini-line i { display: block; height: 5px; background: #b7c9d1; border-radius: 4px; }
.mini-line i:last-child { background: #85b49f; }
.mini-bars { display: flex; height: 100px; align-items: end; gap: 12px; padding: 16px 8px 0; border-bottom: 1px solid var(--line); }
.mini-bars i { width: 18px; max-height: 85px; background: #548aa5; border-radius: 4px 4px 0 0; }
.mini-bars i:nth-child(2) { height: 60%; }
.mini-bars i:nth-child(3) { height: 82%; background: var(--orange); }
.mini-bars i:nth-child(4) { height: 48%; }
.mini-bars i:nth-child(5) { height: 72%; }
.example-body { padding: 24px; }
.example-body h3 { margin: 12px 0 9px; font-size: 21px; letter-spacing: -.02em; }
.example-body p { color: var(--ink-soft); font-size: 13px; }
.example-meta { display: flex; flex-wrap: wrap; gap: 7px; margin: 16px 0 19px; }
.delivery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
.delivery-card { padding: 26px; background: rgba(255, 255, 255, .045); border: 1px solid #365063; border-radius: var(--radius-sm); }
.delivery-card .step { display: inline-block; margin-bottom: 26px; color: var(--orange); font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.delivery-card h3 { margin-bottom: 11px; font-size: 21px; }
.delivery-card p { color: #b8ccd7; font-size: 13px; }
.delivery-card ul { margin: 18px 0 0; padding: 15px 0 0; border-top: 1px solid #365063; list-style: none; }
.delivery-card li { position: relative; margin: 8px 0; padding-left: 17px; color: #d6e2e9; font-size: 12px; }
.delivery-card li::before { content: ""; position: absolute; top: .72em; left: 0; width: 6px; height: 6px; background: var(--orange); border-radius: 50%; }
.process-row { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 38px; border-top: 1px solid #365063; }
.process-item { position: relative; padding: 25px 20px 0 0; }
.process-item::before { content: ""; position: absolute; top: -5px; left: 0; width: 9px; height: 9px; background: var(--orange); border: 2px solid var(--navy-900); border-radius: 50%; box-shadow: 0 0 0 1px var(--orange); }
.process-item strong { display: block; margin-bottom: 5px; font-size: 14px; }
.process-item span { color: #9db5c2; font-size: 12px; }

/* 需求选择器 */
.selector { display: grid; grid-template-columns: .9fr 1.1fr; overflow: hidden; background: #fff; border: 1px solid var(--line-strong); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.selector-form { padding: 34px; }
.selector-form h3 { margin-bottom: 8px; font-size: 24px; }
.selector-form > p { margin-bottom: 23px; color: var(--ink-soft); font-size: 13px; }
.need-options { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-bottom: 22px; }
.need-option { display: flex; min-height: 47px; align-items: center; gap: 9px; padding: 10px 11px; background: #f3f6f7; border: 1px solid transparent; border-radius: 6px; font-size: 12px; cursor: pointer; }
.need-option:has(input:checked) { background: var(--orange-soft); border-color: #deb678; }
.need-option input { width: 16px; height: 16px; margin: 0; accent-color: var(--orange-deep); }
.selector-actions { display: flex; flex-wrap: wrap; gap: 9px; }
.selector-privacy { margin-top: 14px; color: var(--ink-muted); font-size: 11px; }
.selector-output { padding: 34px; color: #fff; background: var(--navy-900); }
.output-empty { display: flex; min-height: 100%; flex-direction: column; justify-content: center; }
.output-empty .icon { width: 38px; height: 38px; margin-bottom: 22px; color: var(--orange); }
.output-empty h3, .plan-result h3 { margin-bottom: 9px; font-size: 23px; }
.output-empty p { max-width: 37ch; color: #aec3cf; font-size: 13px; }
.plan-result h3 { color: var(--orange); }
.plan-result > p { color: #b8ccd7; font-size: 12px; }
.plan-group { margin-top: 20px; padding-top: 17px; border-top: 1px solid #365063; }
.plan-group strong { display: block; margin-bottom: 8px; color: #fff; font-size: 12px; }
.plan-group ul { margin: 0; padding-left: 17px; color: #c5d6df; font-size: 12px; }
.plan-group li { margin: 4px 0; }
.plan-copy { margin-top: 22px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 22px 44px 22px 0; font-size: 16px; font-weight: 750; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; top: 19px; right: 4px; color: var(--blue); font-size: 24px; font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-answer { max-width: 80ch; padding: 0 40px 22px 0; color: var(--ink-soft); font-size: 14px; }

/* 页脚 */
.site-footer { color: #adc0cb; background: var(--navy-950); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.2fr); gap: 45px; padding-block: 52px 42px; }
.footer-grid > * { min-width: 0; }
.footer-brand .brand { display: flex; flex-wrap: wrap; width: 100%; }
.footer-brand .brand-copy { min-width: 0; white-space: normal; }
.footer-brand p { max-width: 36ch; margin-top: 18px; font-size: 12px; }
.footer-column h2 { margin-bottom: 15px; color: #fff; font-size: 13px; }
.footer-column a { display: block; width: fit-content; margin: 9px 0; color: #adc0cb; font-size: 12px; text-decoration: none; }
.footer-column a:hover { color: #fff; text-decoration: underline; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 20px; padding-block: 18px; border-top: 1px solid #263c4b; font-size: 11px; }
.record-link { flex: 0 0 100%; width: fit-content; margin: 0 auto; color: #c4d2da; font-size: 12px; text-align: center; text-decoration: none; white-space: nowrap; }
.record-link:hover { color: var(--orange); text-decoration: underline; }
.footer-contact { margin-top: 14px; font-size: 12px; color: #adc0cb; }
.footer-contact a { color: var(--orange); text-decoration: none; white-space: nowrap; }
.footer-contact a:hover { color: #fff; text-decoration: underline; }

/* 内页首屏 */
.page-hero { position: relative; overflow: hidden; padding: 48px 0 64px; color: #fff; background: radial-gradient(circle at 88% 12%, rgba(244, 154, 54, .13), transparent 30%), var(--navy-900); }
.page-hero::after { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(90deg, rgba(137, 176, 198, .06) 1px, transparent 1px), linear-gradient(rgba(137, 176, 198, .06) 1px, transparent 1px); background-size: 52px 52px; mask-image: linear-gradient(to right, #000, transparent); }
.page-hero .shell { position: relative; z-index: 1; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 35px; color: #a9c0cd; font-size: 12px; }
.breadcrumbs a { text-decoration: none; }
.breadcrumbs a:hover { text-decoration: underline; }
.page-hero-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 60px; align-items: end; }
.page-hero h1 { max-width: 820px; margin-bottom: 17px; font-size: clamp(34px, 4.2vw, 54px); letter-spacing: -.045em; }
.page-hero p { max-width: 680px; color: #bfd1db; font-size: 15px; }
.page-hero-aside { padding-left: 24px; border-left: 2px solid var(--orange); }
.page-hero-aside strong { display: block; margin-bottom: 7px; color: var(--orange); font-size: 13px; }
.page-hero-aside p { margin: 0; font-size: 12px; }
.page-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 25px; }

/* 应用中心 */
.filter-wrap { position: sticky; z-index: 50; top: 78px; background: rgba(243, 246, 247, .96); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
.filter-bar { display: flex; align-items: center; gap: 7px; padding-block: 14px; overflow-x: auto; scrollbar-width: thin; }
.filter-button { min-height: 39px; flex: none; padding: 7px 13px; color: var(--ink-soft); background: transparent; border: 1px solid transparent; border-radius: 6px; font-size: 12px; }
.filter-button:hover { background: #e5ecef; }
.filter-button[aria-pressed="true"] { color: #fff; background: var(--navy-800); border-color: var(--navy-800); }
.filter-count { margin-left: auto; padding-left: 15px; color: var(--ink-muted); font-size: 11px; white-space: nowrap; }
.solution-list { display: grid; gap: 22px; }
.solution-card { display: grid; grid-template-columns: 74px 1fr; overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.solution-index { padding: 28px 18px; color: var(--navy-700); background: #e7eef1; border-right: 1px solid var(--line); font-size: 26px; font-weight: 400; letter-spacing: -.05em; }
.solution-index small { display: block; margin-top: 7px; color: var(--ink-muted); font-size: 9px; font-weight: 700; letter-spacing: .12em; }
.solution-content { padding: 28px 30px; }
.solution-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 22px; margin-bottom: 22px; }
.solution-title { display: flex; gap: 14px; align-items: flex-start; }
.solution-title > .app-icon { display: grid; width: 45px; height: 45px; flex: none; place-items: center; color: var(--navy-700); background: var(--surface-soft); border-radius: 9px; }
.solution-title h2 { margin-bottom: 5px; font-size: 24px; letter-spacing: -.025em; }
.solution-title p { margin: 0; color: var(--ink-soft); font-size: 13px; }
.solution-tags { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.answer-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.answer-block { min-height: 115px; padding: 15px 16px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.answer-block strong { display: block; margin-bottom: 6px; color: var(--ink-muted); font-size: 10px; letter-spacing: .08em; }
.answer-block p { margin: 0; color: #334e5e; font-size: 12px; }
.software-line { display: flex; align-items: flex-start; gap: 10px; margin-top: 18px; padding: 12px 14px; color: var(--ink-soft); background: #f2f6f7; font-size: 12px; }
.software-line strong { flex: none; color: var(--ink); }
.solution-foot { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 19px; }
.solution-visibility { color: var(--ink-muted); font-size: 11px; }
.solution-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.empty-filter { padding: 50px; text-align: center; background: #fff; border: 1px solid var(--line); }
.foundation-table-wrap { overflow-x: auto; border: 1px solid var(--line); }
.foundation-table { width: 100%; min-width: 720px; border-collapse: collapse; background: #fff; font-size: 13px; }
.foundation-table th, .foundation-table td { padding: 17px 19px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.foundation-table th { color: var(--ink-soft); background: #e6eef1; font-size: 11px; letter-spacing: .05em; }
.foundation-table tr:last-child td { border-bottom: 0; }
.foundation-table td:first-child { font-weight: 750; }

/* 示例页和模拟应用界面 */
.demo-notice { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 16px; color: var(--ink-soft); font-size: 11px; }
.demo-notice span { display: inline-flex; align-items: center; gap: 7px; }
.demo-shell { overflow: hidden; background: #f7f9fa; border: 1px solid #aebfc7; border-radius: 14px; box-shadow: 0 20px 55px rgba(14, 40, 55, .13); }
.demo-topbar { display: flex; min-height: 54px; align-items: center; justify-content: space-between; gap: 15px; padding: 11px 17px; color: #fff; background: var(--navy-800); }
.demo-product { display: flex; align-items: center; gap: 10px; font-size: 13px; font-weight: 750; }
.demo-product .app-icon { display: grid; width: 29px; height: 29px; place-items: center; color: var(--navy-900); background: var(--orange); border-radius: 6px; }
.demo-product .icon { width: 17px; height: 17px; }
.demo-topbar-meta { display: flex; align-items: center; gap: 12px; color: #bfd1db; font-size: 10px; }
.demo-layout { display: grid; grid-template-columns: 185px 1fr; min-height: 510px; }
.demo-sidebar { padding: 20px 13px; color: #d6e2e9; background: #102a3c; }
.demo-sidebar-label { display: block; margin: 10px 11px 9px; color: #7894a5; font-size: 9px; letter-spacing: .12em; }
.demo-nav-item { display: flex; align-items: center; gap: 9px; margin: 3px 0; padding: 9px 11px; color: #afc3cf; border-radius: 5px; font-size: 11px; text-decoration: none; }
.demo-nav-item .icon { width: 16px; height: 16px; }
.demo-nav-item.active { color: #fff; background: #23465b; }
.demo-content { min-width: 0; padding: 25px; }
.demo-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 22px; }
.demo-toolbar h2 { margin: 0; font-size: 21px; }
.demo-toolbar p { margin: 3px 0 0; color: var(--ink-muted); font-size: 10px; }
.demo-controls { display: flex; flex-wrap: wrap; gap: 8px; }
.demo-control { min-height: 35px; padding: 6px 10px; color: var(--ink-soft); background: #fff; border: 1px solid var(--line); border-radius: 5px; font-size: 11px; }
.demo-control[aria-pressed="true"], .demo-control.active { color: #fff; background: var(--navy-700); border-color: var(--navy-700); }
.demo-search { width: min(270px, 100%); min-height: 37px; padding: 7px 10px; background: #fff; border: 1px solid var(--line); border-radius: 5px; font-size: 11px; }
.demo-panel { padding: 18px; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.demo-panel + .demo-panel { margin-top: 14px; }
.demo-panel-title { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.demo-panel-title h3 { margin: 0; font-size: 13px; }
.demo-panel-title span { color: var(--ink-muted); font-size: 10px; }
.data-table-wrap { overflow-x: auto; }
.data-table { width: 100%; min-width: 580px; border-collapse: collapse; font-size: 11px; }
.data-table th { padding: 9px 10px; color: var(--ink-muted); background: #f0f4f5; text-align: left; font-size: 9px; font-weight: 700; letter-spacing: .04em; }
.data-table td { padding: 12px 10px; border-bottom: 1px solid #e5ebee; vertical-align: middle; }
.data-table tr:last-child td { border-bottom: 0; }
.data-table tbody tr:hover { background: #f8fafb; }
.data-table .number { font-variant-numeric: tabular-nums; }
.file-name { display: flex; align-items: center; gap: 9px; font-weight: 700; }
.file-name .icon { width: 17px; height: 17px; color: var(--blue); }
.status-pill { display: inline-flex; align-items: center; gap: 5px; padding: 2px 7px; border-radius: 4px; font-size: 9px; font-weight: 750; white-space: nowrap; }
.status-pill::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }
.status-good { color: var(--green); background: var(--green-soft); }
.status-warn { color: var(--orange-deep); background: var(--orange-soft); }
.status-bad { color: var(--red); background: var(--red-soft); }
.status-neutral { color: var(--ink-soft); background: var(--surface-soft); }
.table-action { padding: 3px 0; color: var(--blue); background: transparent; border: 0; font-size: 10px; text-decoration: underline; text-underline-offset: 3px; }
.crm-stage-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.crm-stage-bar .table-action[aria-pressed="true"] { color: var(--ink); font-weight: 600; text-decoration-color: var(--orange); }
.demo-feedback { min-height: 24px; margin-top: 12px; color: var(--green); font-size: 11px; }
.version-list { margin: 0; padding: 0; list-style: none; }
.version-list li { display: grid; grid-template-columns: 75px 1fr auto; gap: 12px; padding: 11px 0; border-bottom: 1px solid var(--line); font-size: 11px; }
.version-list li:last-child { border-bottom: 0; }
.version-list small { color: var(--ink-muted); }
.demo-tabs { display: flex; gap: 5px; margin-bottom: 18px; padding: 4px; width: fit-content; background: #e5ecef; border-radius: 6px; }
.demo-tab { min-height: 34px; padding: 5px 12px; background: transparent; border: 0; border-radius: 4px; font-size: 11px; }
.demo-tab[aria-selected="true"] { background: #fff; box-shadow: 0 1px 4px rgba(8, 23, 34, .09); font-weight: 750; }
.workorder-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.workorder-card { padding: 13px; background: #fff; border: 1px solid var(--line); border-radius: 6px; }
.workorder-card-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 11px; font-size: 10px; font-weight: 750; }
.workorder-card h3 { margin-bottom: 5px; font-size: 12px; }
.workorder-card p { color: var(--ink-muted); font-size: 9px; }
.meter { overflow: hidden; height: 7px; margin: 10px 0 6px; background: #e4ecef; border-radius: 4px; }
.meter > span { display: block; height: 100%; background: var(--blue); border-radius: 4px; }
.meter-label { display: flex; justify-content: space-between; color: var(--ink-muted); font-size: 9px; }
.inspection-layout { display: grid; grid-template-columns: 1fr 240px; gap: 18px; align-items: start; }
.check-list { display: grid; gap: 8px; }
.check-item { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 11px 12px; background: #fff; border: 1px solid var(--line); border-radius: 6px; font-size: 11px; }
.check-item label { display: flex; align-items: center; gap: 8px; }
.check-item input { accent-color: var(--green); }
.phone { width: 100%; padding: 12px; background: #fff; border: 5px solid var(--navy-800); border-radius: 24px; box-shadow: var(--shadow-sm); }
.phone-notch { width: 55px; height: 5px; margin: 0 auto 15px; background: var(--navy-800); border-radius: 5px; }
.phone h3 { font-size: 13px; }
.phone p { color: var(--ink-muted); font-size: 9px; }
.phone-photo { display: grid; min-height: 105px; place-items: center; margin: 12px 0; color: var(--ink-muted); background: #e7edef; border: 1px dashed var(--line-strong); border-radius: 6px; font-size: 10px; text-align: center; }
.phone .button { width: 100%; min-height: 35px; font-size: 10px; }

/* 数据看板：单一系列、可键盘访问、含数据表 */
.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 14px; }
.kpi-card { padding: 16px; background: #fff; border: 1px solid var(--line); border-radius: 7px; }
.kpi-card-label { display: flex; align-items: center; justify-content: space-between; gap: 6px; color: var(--ink-muted); font-size: 10px; }
.kpi-value { display: block; margin: 8px 0 4px; color: var(--ink); font-size: 29px; font-weight: 750; line-height: 1.2; letter-spacing: -.04em; }
.kpi-card small { color: var(--ink-soft); font-size: 9px; }
.dashboard-grid { display: grid; grid-template-columns: 1.45fr .8fr; gap: 14px; }
.chart-card { min-width: 0; padding: 18px; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.chart-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.chart-head h3 { margin: 0; font-size: 13px; }
.chart-head p { margin: 3px 0 0; color: var(--ink-muted); font-size: 9px; }
.chart-wrap { position: relative; }
.line-chart { width: 100%; height: auto; min-height: 210px; overflow: visible; }
.line-chart .grid { stroke: #e2eaed; stroke-width: 1; }
.line-chart .axis-label { fill: #6b7f8b; font-family: inherit; font-size: 9px; font-variant-numeric: tabular-nums; }
.line-chart .series-line { fill: none; stroke: #236a91; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.line-chart .series-area { fill: rgba(35, 106, 145, .1); }
.line-chart .series-dot { fill: #236a91; stroke: #fff; stroke-width: 2; }
.line-chart .hit-point { fill: transparent; cursor: crosshair; }
.line-chart .hit-point:focus { outline: none; }
.line-chart .hit-point:focus + .series-dot, .line-chart .hit-point:hover + .series-dot { stroke: #0d2130; stroke-width: 3; }
.line-chart .crosshair { stroke: #8ba3af; stroke-width: 1; pointer-events: none; }
.chart-tooltip { position: absolute; z-index: 5; min-width: 105px; padding: 8px 10px; color: #fff; background: var(--navy-900); border-radius: 5px; box-shadow: var(--shadow-sm); font-size: 10px; pointer-events: none; transform: translate(-50%, -110%); }
.chart-tooltip strong { display: block; font-size: 14px; }
.chart-tooltip span { color: #bfd1db; }
.chart-details { margin-top: 10px; }
.chart-details summary { color: var(--blue); font-size: 10px; cursor: pointer; }
.chart-details .data-table { min-width: 0; margin-top: 8px; }
.exception-list { margin: 0; padding: 0; list-style: none; }
.exception-list li { padding: 12px 0; border-bottom: 1px solid var(--line); }
.exception-list li:last-child { border-bottom: 0; }
.exception-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 4px; font-size: 10px; font-weight: 750; }
.exception-list p { color: var(--ink-muted); font-size: 9px; }
.health-list { display: grid; gap: 9px; }
.health-row { display: grid; grid-template-columns: 1.1fr 1fr auto; gap: 12px; align-items: center; padding: 12px; background: #fff; border: 1px solid var(--line); border-radius: 6px; font-size: 11px; }
.health-row small { color: var(--ink-muted); }
.restore-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 14px 0; }
.restore-step { padding: 12px; color: var(--ink-muted); background: #f0f4f5; border: 1px solid var(--line); border-radius: 6px; font-size: 10px; }
.restore-step strong { display: block; margin-bottom: 4px; color: var(--ink); font-size: 11px; }
.restore-step.active { background: var(--orange-soft); border-color: #dcb375; }
.restore-step.done { color: var(--green); background: var(--green-soft); border-color: #b4d9c9; }
.timeline { margin: 0; padding: 0; list-style: none; }
.timeline li { position: relative; padding: 0 0 17px 21px; border-left: 1px solid var(--line-strong); font-size: 11px; }
.timeline li:last-child { padding-bottom: 0; border-left-color: transparent; }
.timeline li::before { content: ""; position: absolute; top: 5px; left: -4px; width: 7px; height: 7px; background: var(--blue); border: 2px solid #fff; border-radius: 50%; box-shadow: 0 0 0 1px var(--blue); }
.timeline time { display: block; color: var(--ink-muted); font-size: 9px; }

/* 示例说明 */
.comparison-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.comparison-card { padding: 25px; background: #fff; border: 1px solid var(--line); }
.comparison-card.after { border-top: 3px solid var(--green); }
.comparison-card.before { border-top: 3px solid #98aab3; }
.comparison-card h3 { margin-bottom: 15px; font-size: 18px; }
.comparison-card ul { margin: 0; padding: 0; list-style: none; }
.comparison-card li { padding: 8px 0 8px 19px; color: var(--ink-soft); border-bottom: 1px solid #e7edef; font-size: 13px; }
.comparison-card li:last-child { border-bottom: 0; }
.comparison-card li::before { content: "—"; margin-left: -19px; margin-right: 8px; color: var(--ink-muted); }
.comparison-card.after li::before { content: "✓"; color: var(--green); }
.boundary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.boundary-card { padding: 25px; border-radius: var(--radius-sm); }
.boundary-card.included { background: var(--green-soft); border: 1px solid #bfddcf; }
.boundary-card.assessment { background: var(--orange-soft); border: 1px solid #ead1ae; }
.boundary-card h3 { display: flex; align-items: center; gap: 9px; margin-bottom: 14px; font-size: 18px; }
.boundary-card .icon { width: 21px; height: 21px; }
.boundary-card ul { margin: 0; padding-left: 19px; color: #3c5664; font-size: 13px; }
.boundary-card li { margin: 8px 0; }
.acceptance-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; counter-reset: accept; }
.acceptance-item { padding: 20px; background: #fff; border: 1px solid var(--line); counter-increment: accept; }
.acceptance-item::before { content: "0" counter(accept); display: block; margin-bottom: 20px; color: var(--orange-deep); font-size: 12px; font-weight: 800; }
.acceptance-item strong { display: block; margin-bottom: 7px; font-size: 14px; }
.acceptance-item p { color: var(--ink-soft); font-size: 12px; }
.next-example { display: flex; align-items: center; justify-content: space-between; gap: 25px; padding: 30px; color: #fff; background: var(--navy-900); border-radius: var(--radius); }
.next-example h2 { margin-bottom: 7px; font-size: 24px; }
.next-example p { color: #b8ccd7; font-size: 13px; }

/* 场景插画（AI 生成，仅深色区域使用） */
.scene-figure { max-width: 720px; margin: 34px auto 0; }
.section-heading + .scene-figure { margin-top: 0; }
.scene-figure img { width: 100%; height: auto; border: 1px solid rgba(137, 176, 198, .28); border-radius: var(--radius); }
.scene-figure figcaption { margin-top: 9px; color: #8fa8b5; font-size: 12px; text-align: center; }

/* 响应式 */
@media (max-width: 1439px) {
  .header-inner { gap: 16px; }
  .brand-logo { width: 128px; }
  .brand-copy { font-size: 16px; }
  .brand-copy small { font-size: 9px; }
  .main-nav { gap: 16px; }
  .main-nav > a:not(.button) { font-size: 13px; }
}
@media (max-width: 1359px) {
  .site-header .brand-copy { display: none; }
}
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: minmax(0, .9fr) minmax(440px, 1.1fr); gap: 32px; }
  .hero-copy h1 { font-size: 45px; }
  .category-grid { grid-template-columns: repeat(3, 1fr); }
  .category-card { min-height: 290px; }
  .category-card:nth-child(4), .category-card:nth-child(5) { min-height: 260px; }
  .answer-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr); }
  .footer-column:last-child { grid-column: 1 / -1; }
  .header-inner { gap: 14px; }
  .brand-logo { width: 118px; }
  .brand-copy { font-size: 15px; }
  .main-nav { gap: 14px; }
  .main-nav > a:not(.button) { font-size: 12px; }
}
@media (max-width: 1199px) {
  .header-inner { min-height: 66px; gap: 12px; }
  .site-header { backdrop-filter: none; }
  .brand { gap: 8px; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-logo { width: 112px; }
  .site-header .brand-copy { display: block; }
  .site-header .brand-copy small { display: none; }
  .brand-copy { font-size: 16px; }
  .nav-toggle { display: block; flex: none; }
  .main-nav { position: fixed; z-index: 99; top: 66px; right: 0; bottom: 0; left: 0; display: none; align-items: stretch; flex-direction: column; gap: 3px; padding: 24px 20px; overflow-y: auto; background: var(--navy-900); }
  .main-nav.is-open { display: flex; }
  .main-nav > a:not(.button) { padding: 15px 8px; border-bottom: 1px solid #2b4657; font-size: 15px; }
  .main-nav .button { margin-top: 15px; }
  .filter-wrap { top: 66px; }
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; padding-block: 55px; }
  .hero-copy { max-width: 700px; }
  .hero-copy h1 { max-width: 680px; font-size: clamp(39px, 7vw, 57px); }
  .app-launcher { max-width: 700px; }
  .pain-grid { grid-template-columns: repeat(2, 1fr); }
  .delivery-grid { gap: 10px; }
  .selector { grid-template-columns: 1fr; }
  .selector-output { min-height: 320px; }
  .page-hero-grid { grid-template-columns: 1fr; gap: 25px; }
  .page-hero-aside { max-width: 580px; }
  .solution-head { display: block; }
  .solution-tags { justify-content: flex-start; margin-top: 13px; }
  .demo-layout { grid-template-columns: 1fr; }
  .demo-sidebar { display: none; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-grid { grid-template-columns: 1fr; }
  .acceptance-list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  html { scroll-padding-top: 74px; }
  .shell, .narrow { width: calc(100% - 32px); }
  .header-inner { min-height: 66px; gap: 12px; }
  .site-header { backdrop-filter: none; }
  .brand { gap: 8px; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-logo { width: 112px; }
  .site-header .brand-copy { display: block; }
  .site-header .brand-copy small { display: none; }
  .brand-copy { font-size: 16px; }
  .nav-toggle { display: block; }
  .main-nav { position: fixed; z-index: 99; top: 66px; right: 0; bottom: 0; left: 0; display: none; align-items: stretch; flex-direction: column; gap: 3px; padding: 24px 20px; background: var(--navy-900); }
  .main-nav.is-open { display: flex; }
  .main-nav > a:not(.button) { padding: 15px 8px; border-bottom: 1px solid #2b4657; font-size: 15px; }
  .main-nav .button { margin-top: 15px; }
  .section { padding: 60px 0; }
  .section-compact { padding: 45px 0; }
  .section-heading { display: block; margin-bottom: 27px; }
  .section-heading > a, .section-heading > .tag { margin-top: 15px; }
  .section-heading h2 { font-size: 30px; }
  .hero-grid { min-height: auto; padding-block: 42px; }
  .hero-copy h1 { font-size: 39px; }
  .hero-lead { font-size: 14px; }
  .launcher-body { padding: 15px; }
  .launcher-grid { grid-template-columns: repeat(3, 1fr); }
  .launcher-tile { min-height: 88px; }
  .value-strip-grid { grid-template-columns: 1fr; }
  .value-item { padding: 14px 17px; border-right: 1px solid #c7d6dc; border-bottom: 1px solid #c7d6dc; }
  .value-item:last-child { border-bottom: 0; }
  .value-item b { font-size: 20px; }
  .pain-grid, .category-grid, .example-grid, .delivery-grid { grid-template-columns: 1fr; }
  .pain-card { min-height: auto; }
  .category-card, .category-card:nth-child(4), .category-card:nth-child(5) { min-height: auto; }
  .category-card ul { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 15px; }
  .example-visual { min-height: 205px; }
  .process-row { grid-template-columns: repeat(2, 1fr); gap: 22px 0; }
  .selector-form, .selector-output { padding: 24px; }
  .need-options { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-column:last-child { grid-column: auto; }
  .footer-bottom { flex-direction: column; gap: 7px; }
  .page-hero { padding: 33px 0 46px; }
  .breadcrumbs { margin-bottom: 25px; }
  .page-hero h1 { font-size: 36px; }
  .filter-wrap { top: 66px; }
  .filter-count { display: none; }
  .solution-card { grid-template-columns: 1fr; }
  .solution-index { display: flex; align-items: center; justify-content: space-between; padding: 9px 20px; border-right: 0; border-bottom: 1px solid var(--line); font-size: 17px; }
  .solution-index small { margin: 0; }
  .solution-content { padding: 22px 19px; }
  .answer-grid { grid-template-columns: 1fr; }
  .answer-block { min-height: auto; }
  .solution-foot { align-items: flex-start; flex-direction: column; }
  .software-line { display: block; }
  .software-line strong { display: block; margin-bottom: 4px; }
  .demo-content { padding: 16px; }
  .demo-toolbar { align-items: flex-start; flex-direction: column; }
  .workorder-grid { grid-template-columns: 1fr; }
  .inspection-layout { grid-template-columns: 1fr; }
  .phone { max-width: 260px; margin-inline: auto; }
  .comparison-grid, .boundary-grid { grid-template-columns: 1fr; }
  .next-example { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 480px) {
  .site-header .brand-copy { display: none; }
  .site-footer .brand { flex-wrap: wrap; }
  .site-footer .brand-copy { white-space: normal; }
}
@media (max-width: 430px) {
  .hero-copy h1 { font-size: 34px; }
  .hero-actions .button { width: 100%; }
  .launcher-greeting { display: block; }
  .launcher-greeting .tag { margin-top: 7px; }
  .launcher-grid { grid-template-columns: repeat(2, 1fr); }
  .launcher-foot { align-items: flex-start; flex-direction: column; }
  .example-body { padding: 20px; }
  .selector-actions .button { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-column:last-child { grid-column: auto; }
  .solution-title h2 { font-size: 21px; }
  .solution-title > .app-icon { width: 39px; height: 39px; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
  .kpi-value { font-size: 25px; }
  .health-row { grid-template-columns: 1fr auto; }
  .health-row small { grid-column: 1 / -1; grid-row: 2; }
  .restore-steps { grid-template-columns: 1fr; }
  .acceptance-list { grid-template-columns: 1fr; }
  .demo-topbar-meta span:first-child { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}
@media (forced-colors: active) {
  .status-pill, .tag, .meter > span { border: 1px solid currentColor; }
  .line-chart .series-line { stroke: CanvasText; }
  .line-chart .series-dot { fill: CanvasText; stroke: Canvas; }
  .hero-copy h1 span { color: CanvasText; background: none; -webkit-text-fill-color: CanvasText; }
}
@media print {
  .site-header, .site-footer, .hero-actions, .page-actions, .filter-wrap, .button, .nav-toggle { display: none !important; }
  body { color: #000; background: #fff; }
  .hero, .page-hero, .section-dark { color: #000; background: #fff; }
  .hero-copy h1 span { color: #000; background: none; -webkit-text-fill-color: #000; }
  .hero-grid { min-height: 0; }
  .app-launcher, .demo-shell { box-shadow: none; }
  .section { padding: 30px 0; }
}

/* ===== 多语言：语言切换器（深色头部适配）===== */
.lang-switch { position: relative; flex: none; }
.lang-summary { display: inline-flex; align-items: center; gap: 7px; padding: 7px 11px; color: #d5e2e9; background: transparent; border: 1px solid #587082; border-radius: var(--radius-sm); font-size: 13px; white-space: nowrap; cursor: pointer; list-style: none; }
.lang-summary::-webkit-details-marker { display: none; }
.lang-summary:hover { color: #fff; border-color: #8aa2b1; }
.lang-icon { width: 16px; height: 16px; flex: none; }
.lang-switch[open] .lang-summary { color: #fff; border-color: var(--orange); }
.lang-menu { position: absolute; z-index: 60; top: calc(100% + 8px); right: 0; min-width: 176px; margin: 0; padding: 6px; list-style: none; background: #fff; border: 1px solid var(--line-strong); border-radius: 9px; box-shadow: var(--shadow-lg); }
.lang-item { display: flex; align-items: center; gap: 8px; padding: 8px 11px; color: var(--ink); border-radius: 6px; font-size: 13px; text-decoration: none; }
.lang-item:hover { background: var(--surface-soft); }
.lang-item-active { color: var(--orange); font-weight: 700; }
.lang-check { display: inline-block; min-width: 14px; }
/* 中等宽度以下只显示地球图标，减轻导航宽度压力 */
@media (max-width: 1439px) { .lang-current { display: none; } }
/* 移动端全屏导航内：菜单改为就地展开 */
@media (max-width: 720px) {
  .lang-switch { margin-top: 4px; }
  .lang-menu { position: static; margin-top: 8px; min-width: 0; }
}

/* ===== 多语言：RTL（dir="rtl" 语言页）方向修正 ===== */
html[dir="rtl"] .lang-menu { right: auto; left: 0; }
html[dir="rtl"] .inline-arrow::after { content: "←"; }
html[dir="rtl"] .inline-arrow:hover::after { transform: translateX(-3px); }
html[dir="rtl"] .notice { border-left: 0; border-right: 3px solid var(--blue); }
html[dir="rtl"] .comparison-card li { padding: 8px 19px 8px 0; }
html[dir="rtl"] .comparison-card li::before { margin: 0 8px 0 -19px; }
html[dir="rtl"] .faq-answer { padding: 0 0 22px 40px; }
html[dir="rtl"] .search-field .icon { left: auto; right: 12px; }

/* ===== 知识文章 ===== */
.article-body { max-width: 72ch; }
.article-body h2 { margin: 30px 0 12px; font-size: 22px; letter-spacing: -.01em; }
.article-body h3 { margin: 24px 0 10px; font-size: 17px; }
.article-body p, .article-body li { color: var(--ink-soft); font-size: 15px; line-height: 1.85; }
.article-body ul, .article-body ol { margin: 10px 0 18px; padding-left: 22px; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin: 6px 0; }
.article-body blockquote { margin: 18px 0; padding: 12px 18px; background: var(--surface-soft); border-left: 3px solid var(--orange); }
.article-body blockquote p { margin: 4px 0; }
.article-body code { padding: 2px 6px; background: #eef2f4; border-radius: 4px; font-size: 13px; }
.article-body hr { margin: 26px 0; border: 0; border-top: 1px solid var(--line); }
.article-body strong { color: var(--ink); }
.article-card { max-width: 72ch; margin-bottom: 18px; padding: 22px 24px; background: #fff; border: 1px solid var(--line); border-radius: 12px; }
.article-card h2 { margin: 0 0 8px; font-size: 19px; }
.article-card h2 a { color: var(--ink); text-decoration: none; }
.article-card h2 a:hover { color: var(--orange); }
.article-card p { margin: 8px 0 0; color: var(--ink-soft); font-size: 14px; }
.article-card .inline-arrow { display: inline-flex; margin-top: 10px; }
html[dir="rtl"] .article-body ul, html[dir="rtl"] .article-body ol { padding-right: 22px; padding-left: 0; }
html[dir="rtl"] .article-body blockquote { border-right: 3px solid var(--orange); border-left: 0; }