/* Visual language shared with the social media audit page (社媒检测获客网页):
   light sky gradient background, faint grid, drifting blue glows, frosted-glass
   cards, gradient pill buttons, gradient headline text, mono micro-labels. */
:root {
  --bg: #f5f9ff;
  --surface: #ffffff;
  --glass: rgba(255, 255, 255, 0.34);
  --glass-strong: rgba(255, 255, 255, 0.55);
  --line: rgba(37, 99, 235, 0.16);
  --line-2: rgba(37, 99, 235, 0.3);
  --text: #142a52;
  --text-2: #33496f;
  --muted: #5c7099;
  --blue-light: #38bdf8;
  --accent: #2563eb;
  --accent-deep: #1d4ed8;
  --success: #0ea5a4;
  --danger: #dc2626;
  --grad: linear-gradient(90deg, #38bdf8, #2563eb 55%, #1d4ed8);
  --shadow: 0 20px 60px rgba(15, 23, 42, 0.1);
  --shadow-blue: 0 16px 40px rgba(37, 99, 235, 0.28);
  --r: 16px;
  --r-sm: 10px;
  --wrap: 1160px;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
html, body { overflow-x: hidden; }
body {
  margin: 0;
  font: 400 17px/1.65 var(--sans);
  color: var(--text);
  background: linear-gradient(160deg, #ffffff 0%, #f4f9ff 35%, #e7f1ff 70%, #d9ebff 100%) fixed;
  -webkit-font-smoothing: antialiased;
  position: relative;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { margin: 0 0 0.5em; line-height: 1.15; text-wrap: balance; }
h1 { font-size: clamp(34px, 4.6vw, 58px); font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; }
h2 { font-size: clamp(26px, 3.2vw, 38px); font-weight: 800; letter-spacing: -0.02em; }
h3, .h3 { font-size: 20px; font-weight: 700; }
p { margin: 0 0 1em; }
main, .nav, .footer { position: relative; z-index: 1; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.narrow-wrap { max-width: 820px; }
.narrow { max-width: 620px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.lede { font-size: 18px; color: var(--muted); max-width: 540px; }
.gradient-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.eyebrow { font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin: 0 0 18px; }
.sr-only, .hp { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: #fff; padding: 8px 12px; z-index: 100; border-radius: var(--r-sm); }
.skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* background decoration (same as the audit page) */
.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image: linear-gradient(rgba(37, 99, 235, 0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(37, 99, 235, 0.045) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 90%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 90%);
}
.bg-glow { position: fixed; z-index: 0; width: 620px; height: 620px; border-radius: 50%; filter: blur(130px); opacity: 0.4; pointer-events: none; will-change: transform; animation: drift 14s ease-in-out infinite alternate; }
.bg-glow-a { top: -220px; left: -160px; background: var(--blue-light); }
.bg-glow-b { top: 120px; right: -220px; background: var(--accent); animation-name: driftB; animation-duration: 18s; animation-delay: -6s; }
.bg-glow-c { width: 520px; height: 520px; bottom: -200px; left: 30%; background: var(--accent-deep); opacity: 0.28; animation-name: driftC; animation-duration: 20s; animation-delay: -3s; }
@keyframes drift { to { transform: translate(50px, 36px) scale(1.12); } }
@keyframes driftB { to { transform: translate(-40px, 46px) scale(1.08); } }
@keyframes driftC { to { transform: translate(30px, -30px) scale(1.15); } }

/* glass surfaces */
.glass, .cell, .form-card, .faq details, .final-inner, .table-wrap, .pain-list, .steps li, .svc-list div, .info, .logos .wrap {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--r);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 48px; padding: 0 26px; border-radius: 999px; border: 0; font: 700 16px/1 var(--sans); text-decoration: none; cursor: pointer; white-space: nowrap; transition: filter 0.15s ease, transform 0.15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn-grad { background: var(--grad); color: #fff; box-shadow: var(--shadow-blue); }
.btn-grad:hover { filter: brightness(1.12); }
.btn-ghost { background: var(--glass-strong); color: var(--text); border: 1px solid var(--line-2); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { min-height: 38px; padding: 0 18px; font-size: 14px; box-shadow: 0 8px 20px rgba(37, 99, 235, 0.22); }
.btn-block { width: 100%; border-radius: var(--r-sm); }
.btn[disabled] { opacity: 0.5; cursor: progress; }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }
.link-arrow { display: inline-flex; gap: 6px; font-size: 15px; font-weight: 600; text-decoration: none; border-bottom: 1px solid var(--line-2); padding-bottom: 2px; transition: color 0.15s ease, border-color 0.15s ease; }
.link-arrow:hover { color: var(--accent); border-color: var(--accent); }

/* nav */
.nav { position: sticky; top: 0; z-index: 50; background: rgba(245, 249, 255, 0.7); -webkit-backdrop-filter: blur(16px) saturate(1.4); backdrop-filter: blur(16px) saturate(1.4); border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; gap: 28px; height: 68px; }
/* Brand logo D1: navy F mark + "INFOUND.AI" in Manrope 800, ".AI" in brand blue (品牌logo/README.md). */
.wordmark { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; flex: none; }
.wordmark-mark { display: block; width: 28px; height: 28px; flex: none; }
.wordmark-text { font-family: Manrope, var(--sans); font-weight: 800; font-size: 20px; letter-spacing: -0.005em; line-height: 1; color: var(--text); }
.wordmark-text span { color: var(--accent); }
.nav-links { display: flex; gap: 26px; margin-left: auto; font-size: 15px; }
.nav-links a { text-decoration: none; color: var(--text-2); }
.nav-links a:hover { color: var(--accent); }
.nav-links .lang { font-family: var(--mono); font-size: 12px; border: 1px solid var(--line-2); border-radius: 999px; padding: 3px 10px; }
.nav-toggle { display: none; margin-left: auto; background: var(--glass-strong); border: 1px solid var(--line-2); color: var(--text); border-radius: 999px; padding: 8px 14px; font: 600 14px var(--sans); }

/* hero */
.hero { padding: 88px 0 72px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr); gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(30px, 3.5vw, 48px); margin-bottom: 22px; text-wrap: initial; }
.hero .lede { margin-bottom: 34px; }
.url-form { display: flex; flex-direction: column; align-items: flex-start; gap: 18px; max-width: 540px; }
.url-row { display: flex; align-items: center; gap: 4px; width: 100%; background: var(--glass); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); border: 1px solid var(--line); border-radius: 14px; padding: 6px; box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.04), var(--shadow); transition: background 0.2s ease, transform 0.2s ease; }
.url-row:focus-within { background: var(--glass-strong); transform: translateY(-1px); }
.url-row .prompt { font-family: var(--mono); color: var(--accent); padding-left: 14px; font-size: 16px; }
.url-row input { flex: 1; min-width: 0; padding: 14px 8px; border: 0; background: transparent; color: var(--text); font: 400 15px var(--mono); outline: none; }
.url-row input::placeholder { color: var(--muted); }
.url-form .btn { min-height: 58px; padding: 0 40px; font-size: 18px; }
.btn .arrow { transition: transform 0.15s ease; }
.btn:hover .arrow { transform: translateX(3px); }
.hero-solo .hero-grid { grid-template-columns: 1fr; }
.hero-solo .hero-copy { max-width: 760px; }
.hero-sub { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; margin-top: 24px; font-size: 14px; }
.hero-visual { position: relative; height: 460px; }
.rp { position: absolute; height: 78%; width: auto; border-radius: var(--r); border: 1px solid var(--line); box-shadow: 0 20px 60px rgba(15, 23, 42, 0.16); }
.rp-a { left: 0; top: 50px; z-index: 3; animation: floatA 7s ease-in-out infinite; }
.rp-b { left: 22%; top: 10px; z-index: 2; animation: floatB 8s ease-in-out infinite; animation-delay: -2s; }
.rp-c { right: 0; top: 80px; z-index: 1; animation: floatC 9s ease-in-out infinite; animation-delay: -4s; }
@keyframes floatA { 0%, 100% { transform: rotate(-4deg) translateY(0); } 50% { transform: rotate(-3deg) translateY(-14px); } }
@keyframes floatB { 0%, 100% { transform: rotate(2deg) translateY(0); } 50% { transform: rotate(3deg) translateY(-10px); } }
@keyframes floatC { 0%, 100% { transform: rotate(7deg) translateY(0); } 50% { transform: rotate(6deg) translateY(12px); } }

/* logos */
.logos { padding: 8px 0 24px; }
.logos .wrap { padding: 22px 28px; max-width: calc(var(--wrap) - 48px); }
.logos .small { font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; margin: 0; }
.logo-row { list-style: none; margin: 16px 0 0; padding: 0; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px 32px; }
.logo-row img { height: 24px; width: auto; filter: brightness(0) saturate(100%) invert(14%) sepia(37%) saturate(1878%) hue-rotate(198deg) brightness(92%) contrast(95%); opacity: 0.6; }
.logo-row li:nth-child(2) img, .logo-row li:nth-child(3) img { height: 32px; }

/* sections */
.section { padding: 88px 0; }
.section.tight { padding: 40px 0 88px; }
.section h2 { margin-bottom: 36px; max-width: 18em; }

.pain-list { list-style: none; margin: 0; padding: 8px 32px; }
.pain-list li { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 40px; padding: 26px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.pain-list li:last-child { border-bottom: 0; }
.pain-list h3 { font-size: clamp(20px, 2.2vw, 26px); font-weight: 800; margin: 0; color: var(--accent-deep); }
.pain-list p { margin: 0; color: var(--muted); font-size: 17px; }

.bento { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 20px; }
.cell { position: relative; overflow: hidden; padding: 30px; display: flex; flex-direction: column; min-height: 230px; transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease; }
.cell::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; background: var(--grad); opacity: 0; transition: opacity 0.2s ease; -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; }
.cell:hover { background: rgba(255, 255, 255, 0.5); transform: translateY(-5px); box-shadow: 0 16px 44px rgba(37, 99, 235, 0.18); }
.cell:hover::before { opacity: 1; }
.cell h3 { color: var(--accent-deep); font-size: 21px; }
.cell p { color: var(--muted); font-size: 15px; }
.cell-1 { grid-column: span 4; background: var(--glass-strong); }
.cell-1::before { opacity: 1; }
.cell-1 h3 { font-size: 28px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.cell-1 p { font-size: 17px; max-width: 30em; }
.cell-2 { grid-column: span 2; }
.cell-3 { grid-column: span 3; }
.cell-full { grid-column: 1 / -1; }
.tags { list-style: none; margin: auto 0 0; padding: 18px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.tags li { font-family: var(--mono); font-size: 12px; padding: 5px 12px; border-radius: 999px; background: rgba(37, 99, 235, 0.08); border: 1px solid rgba(37, 99, 235, 0.22); color: var(--accent); }

.table-wrap { overflow-x: auto; padding: 8px 12px; }
.engage { width: 100%; border-collapse: collapse; font-size: 16px; }
.engage th, .engage td { text-align: left; padding: 20px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
.engage tbody tr:last-child th, .engage tbody tr:last-child td { border-bottom: 0; }
.engage thead th { font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: 0.08em; color: var(--muted); padding-top: 14px; }
.engage tbody th { font-size: 19px; font-weight: 800; width: 24%; color: var(--text); }
.engage td { color: var(--text-2); }
.engage tr.featured th, .engage tr.featured td { background: rgba(255, 255, 255, 0.5); }
.engage tr.featured th { box-shadow: inset 3px 0 0 var(--accent); }
.badge { display: inline-block; vertical-align: middle; margin-left: 6px; font: 600 11px/1 var(--mono); background: var(--grad); color: #fff; padding: 5px 9px; border-radius: 999px; }

.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; }
.steps li { padding: 22px 20px; }
.step-n { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: var(--grad); color: #fff; font-weight: 800; font-size: 15px; margin-bottom: 16px; box-shadow: 0 8px 20px rgba(37, 99, 235, 0.25); }
.steps h3 { font-size: 17px; margin-bottom: 6px; }
.steps p { color: var(--muted); font-size: 14px; margin: 0; }

.brand-band h2 { margin-bottom: 14px; }
.mosaic { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); grid-auto-rows: 220px; gap: 14px; margin: 34px 0 28px; }
.mosaic-4 { grid-template-columns: 1.4fr 1fr 1fr; grid-template-rows: 220px 220px; }
.tile { position: relative; overflow: hidden; border-radius: var(--r); text-decoration: none; border: 1px solid var(--line); box-shadow: var(--shadow); }
.mosaic-4 .tile:first-child { grid-row: span 2; }
.mosaic-4 .tile:nth-child(4) { grid-column: span 2; }
.tile img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.tile:hover img { transform: scale(1.04); }
.tile span { position: absolute; left: 12px; bottom: 12px; padding: 8px 14px; font-size: 14px; font-weight: 600; color: var(--text); background: rgba(255, 255, 255, 0.72); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); border: 1px solid var(--line); border-radius: 999px; }

.faq { display: flex; flex-direction: column; gap: 12px; }
.faq details { padding: 0 24px; transition: background 0.2s ease; }
.faq details[open] { background: var(--glass-strong); }
.faq summary { list-style: none; cursor: pointer; padding: 20px 36px 20px 0; font-size: 18px; font-weight: 700; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: 14px; font-size: 26px; font-weight: 400; color: var(--accent); transition: transform 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--text-2); padding-bottom: 22px; margin: 0; }

.final { padding: 40px 0 96px; }
.final-inner { display: flex; flex-direction: column; align-items: flex-start; gap: 22px; padding: 56px; background: var(--glass-strong); box-shadow: var(--shadow); position: relative; overflow: hidden; }
.final-inner::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; background: var(--grad); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; }
.final h2 { font-size: clamp(26px, 3.2vw, 40px); max-width: 17em; margin: 0; }
.final .url-form { width: 100%; }

/* inner pages */
.page-hero { padding: 80px 0 24px; }
.page-hero .btn { margin-top: 12px; }
.brand-hero .wide-img { margin-top: 36px; border-radius: 20px; aspect-ratio: 21 / 9; object-fit: cover; width: 100%; border: 1px solid var(--line); box-shadow: var(--shadow); }
.split { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 48px; align-items: start; }
.form-card { background: var(--surface); border-radius: 18px; padding: 34px 32px; box-shadow: 0 30px 80px rgba(15, 23, 42, 0.12); }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field input, .field select, .field textarea { width: 100%; background: rgba(37, 99, 235, 0.03); color: var(--text); border: 1px solid var(--line); border-radius: 8px; padding: 11px 14px; font: 400 15px var(--sans); }
.field textarea { resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15); }
.field.invalid input, .field.invalid select { border-color: var(--danger); }
.field input::placeholder, .field textarea::placeholder { color: #8a9bbd; }
.err { color: var(--danger); font-size: 13px; margin: 6px 0 0; }
.err:empty { display: none; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.lead-form .btn-block { min-height: 48px; margin-top: 8px; box-shadow: none; }
.form-error { color: var(--danger); font-size: 14px; margin: 12px 0 0; }
.form-error:empty { display: none; }
.consent { margin: 14px 0 0; }
.form-success { text-align: center; padding: 12px 0; }
.form-success::before { content: "✓"; display: flex; align-items: center; justify-content: center; width: 48px; height: 48px; margin: 0 auto 14px; border-radius: 50%; background: var(--success); color: #fff; font-size: 24px; font-weight: 700; box-shadow: 0 0 20px rgba(14, 165, 164, 0.35); }
.form-success h2 { font-size: 24px; margin-bottom: 8px; }
.form-success p { color: var(--muted); margin-bottom: 22px; }
.includes .h3 { margin: 0 0 16px; }
.checks { list-style: none; padding: 0; margin: 0 0 36px; }
.checks li { padding: 10px 0 10px 30px; border-bottom: 1px solid var(--line); position: relative; }
.checks li::before { content: ""; position: absolute; left: 2px; top: 19px; width: 12px; height: 7px; border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg); }
.sample { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.sample img { border-radius: var(--r-sm); border: 1px solid var(--line); box-shadow: var(--shadow); }

.svc-list { margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.svc-list div { padding: 24px; }
.svc-list dt { font-weight: 800; font-size: 18px; margin-bottom: 6px; color: var(--accent-deep); }
.svc-list dd { margin: 0; color: var(--muted); font-size: 15px; }
.case-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 24px; }
.case { margin: 0; }
.case img { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; border-radius: var(--r); border: 1px solid var(--line); box-shadow: var(--shadow); }
.case figcaption { padding-top: 16px; }
.case h3 { margin-bottom: 4px; }
.case p { color: var(--muted); margin: 0; }
.olympics { margin-top: 32px; }
.olympics strong { color: var(--text); }
.media-row { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 12px; }
.media-row li { font-family: var(--mono); font-size: 14px; padding: 8px 16px; border-radius: 999px; background: var(--glass-strong); border: 1px solid var(--line); color: var(--text-2); }
.info { padding: 4px 22px; }
.info div { padding: 14px 0; border-bottom: 1px solid var(--line); }
.info div:last-child { border-bottom: 0; }
.info dt { font-family: var(--mono); font-size: 12px; color: var(--muted); margin-bottom: 2px; }
.info dd { margin: 0; }
.legal { margin: 24px 0; }
.prose h2 { margin-top: 36px; }
.prose p { color: var(--text-2); }
.qr { border-radius: var(--r-sm); margin-top: 16px; background: #fff; padding: 6px; border: 1px solid var(--line); }

/* footer */
.footer { border-top: 1px solid var(--line); padding: 48px 0 24px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 0.8fr; gap: 40px; }
.footer-grid p { margin-top: 12px; max-width: 26em; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { text-decoration: none; }
.footer-col a:hover { color: var(--accent); }
.footer-base { margin-top: 40px; font-size: 13px; text-align: center; }

.sticky-cta { display: none; }

@media (max-width: 960px) {
  .hero-grid, .split { grid-template-columns: 1fr; }
  .hero-visual { height: 360px; max-width: 520px; }
  .pain-list li { grid-template-columns: 1fr; gap: 8px; }
  .bento { grid-template-columns: 1fr 1fr; }
  .cell-1 { grid-column: span 2; }
  .cell-2, .cell-3, .cell-full { grid-column: span 1; }
  .cell:last-child:nth-child(even) { grid-column: span 2; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .nav-inner { height: 60px; gap: 12px; }
  .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .nav-links { display: none; position: absolute; top: 60px; left: 0; right: 0; flex-direction: column; gap: 0; background: rgba(245, 249, 255, 0.96); border-bottom: 1px solid var(--line); padding: 8px 16px 16px; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-links .lang { border: 0; border-radius: 0; padding: 12px 0; font-size: 14px; }
  .hero { padding: 48px 0 60px; }
  .hero h1 { font-size: 30px; }
  .hero-visual { height: 260px; }
  .url-form { align-items: stretch; }
  .url-row .prompt { display: none; }
  .url-form .btn { font-size: 17px; padding: 0 24px; }
  .section { padding: 64px 0; }
  .section.tight { padding: 28px 0 64px; }
  .section h2 { margin-bottom: 26px; }
  .pain-list { padding: 4px 20px; }
  .bento { grid-template-columns: 1fr; }
  .cell-1, .cell-2, .cell-3, .cell-full, .cell:last-child:nth-child(even) { grid-column: auto; min-height: 0; }
  .engage thead { display: none; }
  .engage, .engage tbody, .engage tr, .engage th, .engage td, .engage tbody th { display: block; width: 100%; }
  .engage tr { border-bottom: 1px solid var(--line); padding: 16px 8px; }
  .engage tr:last-child { border-bottom: 0; }
  .engage th, .engage td, .engage tbody th { border: 0; padding: 4px 0; background: none !important; box-shadow: none !important; }
  .engage td::before { content: attr(data-label); display: block; font-family: var(--mono); font-size: 11px; color: var(--muted); }
  .steps { grid-template-columns: 1fr; }
  .mosaic, .mosaic-4 { grid-template-columns: 1fr 1fr; grid-template-rows: none; grid-auto-rows: 150px; }
  .mosaic .tile:first-child { grid-column: span 2; grid-row: auto; height: 200px; }
  .mosaic-4 .tile:nth-child(4) { grid-column: span 2; }
  .case-grid, .row2 { grid-template-columns: 1fr; }
  .row2 { gap: 0; }
  .form-card { padding: 24px 18px; }
  .final-inner { padding: 32px 22px; }
  .footer-grid { grid-template-columns: 1fr; }
  .final { padding-bottom: 110px; }
  .sticky-cta { display: block; position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); background: rgba(245, 249, 255, 0.9); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); border-top: 1px solid var(--line); transform: translateY(110%); transition: transform 0.25s ease; }
  .sticky-cta.show { transform: none; }
  .sticky-cta .btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

/* ===== Additions for the modular site (same glass language as above) ===== */

/* header: section links left, language + contact + diagnosis right */
.nav-links { flex: 1; margin-left: 12px; }
.nav-sep { flex: 1; }
.nav-links .nav-contact { font-weight: 600; color: var(--text); }
.nav-links .nav-contact:hover, .nav-links a[aria-current="page"] { color: var(--accent); }

/* hero: URL input with the button inside the same glass row */
.url-row { padding: 6px 6px 6px 0; }
.url-row .btn, .url-form .url-row .btn { min-height: 48px; padding: 0 24px; font-size: 16px; border-radius: 10px; flex: none; }
.hero-note { margin: 18px 0 0; font-size: 14px; color: var(--muted); }
.final-note { margin: -8px 0 0; font-size: 14px; color: var(--muted); }
.text-link { font-weight: 600; text-decoration: none; border-bottom: 1px solid var(--line-2); padding-bottom: 2px; transition: color 0.15s ease, border-color 0.15s ease; }
.text-link:hover { color: var(--accent); border-color: var(--accent); }

/* hero globe */
.hero-visual { height: auto; aspect-ratio: 1; width: 112%; margin-right: -12%; cursor: grab; opacity: 0; transition: opacity 1.2s ease; }
.hero-visual.is-ready { opacity: 1; }
.hero-visual::before { content: ""; position: absolute; inset: 6%; border-radius: 50%; background: radial-gradient(closest-side, rgba(37, 99, 235, 0.28), transparent 78%); filter: blur(18px); }
.globe { position: relative; width: 100%; height: 100%; }
.globe-overlay { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.globe-label { position: absolute; left: 0; top: 0; padding: 6px 12px; font-size: 13px; font-weight: 600; color: var(--text); background: rgba(255, 255, 255, 0.82); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); border: 1px solid var(--line); border-radius: 999px; box-shadow: 0 8px 22px rgba(15, 23, 42, 0.18); white-space: nowrap; pointer-events: none; opacity: 0; will-change: transform, opacity; }
.globe-label[data-anchor="cn"] { background: var(--grad); color: #fff; border-color: transparent; }

/* logo strip: scrolling inside the glass card */
.logos-title { font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; color: var(--muted); margin: 0 0 16px; }
.marquee { display: flex; overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent); mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent); }
.logo-track { list-style: none; margin: 0; padding: 0 64px 0 0; display: flex; align-items: center; gap: 64px; flex: none; animation: marquee 36s linear infinite; }
.marquee:hover .logo-track { animation-play-state: paused; }
.logo-track li { height: 44px; display: flex; align-items: center; }
.logo-track img { height: 24px; width: auto; filter: grayscale(1) contrast(1.1); opacity: 0.6; transition: opacity 0.2s ease, filter 0.2s ease; }
.logo-track li:hover img { opacity: 1; filter: none; }
.logo-track .logo-miniso, .logo-track .logo-yadea { height: 40px; }
.logo-track .logo-chanel { height: 17px; }
.logo-track .logo-byd { height: 21px; }
@keyframes marquee { to { transform: translateX(-100%); } }

/* AI agent cases: glass cards with a gradient edge */
.ai-cases { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 20px; }
.ai-cases li { position: relative; overflow: hidden; display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 32px; align-items: center; padding: 36px 40px; background: var(--glass-strong); border: 1px solid var(--line); border-radius: var(--r); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); box-shadow: var(--shadow); }
.ai-cases li::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; background: var(--grad); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; }
.ai-case-name h3 { font-size: 34px; font-weight: 800; letter-spacing: -0.03em; margin: 0 0 10px; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.ai-case-name p { display: inline-block; margin: 0; font-family: var(--mono); font-size: 12px; padding: 5px 12px; border-radius: 999px; background: rgba(37, 99, 235, 0.08); border: 1px solid rgba(37, 99, 235, 0.22); color: var(--accent); }
.ai-case-body { margin: 0; font-size: 18px; color: var(--text-2); }

/* Europe track record: glass panel with metric cards */
.proof-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 48px; align-items: center; padding: 48px; background: var(--glass-strong); border: 1px solid var(--line); border-radius: 20px; -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); box-shadow: var(--shadow); }
.proof h2 { margin-bottom: 16px; }
.proof .lede { margin-bottom: 24px; }
.stats { margin: 0; display: grid; gap: 12px; }
.stats div { display: grid; grid-template-columns: 150px 1fr; align-items: center; gap: 16px; padding: 18px 22px; background: rgba(255, 255, 255, 0.7); border: 1px solid var(--line); border-radius: var(--r-sm); }
.stats dt { font-size: 36px; font-weight: 800; letter-spacing: -0.03em; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stats dd { margin: 0; color: var(--muted); font-size: 15px; }

/* diagnosis: only the report cover, as tall as the form */
.split-diag { align-items: stretch; }
.split-diag .includes { display: flex; flex-direction: column; min-height: 0; }
.split-diag .sample { display: flex; flex-direction: column; flex: 1; min-height: 0; gap: 0; margin: 0; }
.sample-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.sample-head .h3 { margin: 0; }
.sample-head .text-link { font-size: 14px; }
.split-diag .sample > .muted { margin: 6px 0 16px; }
.sample-cover { flex: 1 1 0; min-height: 220px; display: block; position: relative; }
.sample-cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; object-position: left bottom; border: 0; box-shadow: none; filter: drop-shadow(0 18px 30px rgba(20, 42, 82, 0.2)); }

@media (max-width: 960px) {
  .hero-visual { width: 100%; margin: 0 auto; max-width: 520px; }
  .proof-grid { grid-template-columns: 1fr; gap: 28px; }
  .sample-cover { flex: none; height: 420px; }
  .ai-cases li { grid-template-columns: 1fr; gap: 14px; }
}
@media (max-width: 760px) {
  .nav-sep { display: none; }
  .url-row { flex-direction: column; padding: 8px; background: var(--glass); }
  .url-row input { min-height: 46px; }
  .url-row .btn { width: 100%; }
  .proof-grid { padding: 28px 20px; }
  .stats div { grid-template-columns: 110px 1fr; padding: 14px 16px; }
  .stats dt { font-size: 28px; }
  .ai-cases { grid-template-columns: 1fr; }
  .ai-cases li { padding: 26px 22px; }
}
@media (prefers-reduced-motion: reduce) {
  .logo-track { animation: none; }
  .marquee { overflow-x: auto; }
}

/* brand activation cases: text + photo gallery per case */
.bcases { display: flex; flex-direction: column; gap: 24px; }
.bcase { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: 36px; align-items: start; padding: 32px; background: var(--glass-strong); border: 1px solid var(--line); border-radius: 20px; -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); box-shadow: var(--shadow); }
.bcase:nth-child(even) .bcase-text { order: 2; }
.bcase-text-only { grid-template-columns: 1fr; padding: 24px 32px; }
.bcase h3 { font-size: 24px; font-weight: 800; letter-spacing: -0.02em; margin: 4px 0 10px; }
.bcase-summary { font-size: 17px; color: var(--text); margin: 0 0 12px; }
.bcase-detail { color: var(--muted); white-space: pre-line; margin: 0; font-size: 15px; }
.bcase-gallery { display: grid; gap: 10px; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 120px; }
.bcase-photo { position: relative; display: block; overflow: hidden; border-radius: 12px; border: 1px solid var(--line); }
.bcase-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.bcase-photo:hover img { transform: scale(1.04); }
.bcase-photo:first-child { grid-column: 1 / -1; grid-row: span 2; }
.bcase-photo.is-extra { display: none; }
.bcase-photo .more { position: absolute; inset: 0; display: grid; place-items: center; background: rgba(20, 42, 82, 0.55); color: #fff; font-weight: 700; font-size: 18px; }
.g-1 { grid-auto-rows: 300px; }
.g-1 .bcase-photo:first-child { grid-row: span 1; }
.g-2 .bcase-photo:nth-child(2) { grid-column: 1 / -1; }
.g-3 .bcase-photo:nth-child(n+2) { grid-column: span 2; }
.g-4 .bcase-photo:nth-child(n+2) { grid-column: span 1; }
.g-4 .bcase-photo:nth-child(4) { grid-column: span 2; }
.lightbox { position: fixed; inset: 0; z-index: 200; display: flex; align-items: center; justify-content: center; background: rgba(10, 20, 40, 0.88); padding: 48px 64px; }
.lightbox img { max-width: 100%; max-height: 100%; border-radius: 10px; box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5); }
.lightbox button { position: absolute; border: 0; background: rgba(255, 255, 255, 0.14); color: #fff; width: 44px; height: 44px; border-radius: 50%; font-size: 22px; cursor: pointer; }
.lightbox button:hover { background: rgba(255, 255, 255, 0.26); }
.lightbox .lb-close { top: 16px; right: 16px; }
.lightbox .lb-prev { left: 12px; top: 50%; transform: translateY(-50%); }
.lightbox .lb-next { right: 12px; top: 50%; transform: translateY(-50%); }
.lightbox .lb-count { position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%); color: #cfd8ea; font-size: 13px; }
@media (max-width: 860px) {
  .bcase { grid-template-columns: 1fr; padding: 22px; gap: 20px; }
  .bcase:nth-child(even) .bcase-text { order: 0; }
  .bcase-gallery { grid-auto-rows: 90px; }
  .lightbox { padding: 56px 12px; }
}

/* Advoo-style client logo in AI case cards */
.ai-case-logo { height: 32px; width: auto; display: block; margin-bottom: 14px; }
.ai-case-text .text-link { display: inline-block; margin-top: 14px; font-size: 15px; }

/* Case galleries tuned for smaller photos: cover across the top, others in pairs */
.bcase-gallery, .g-1, .g-2, .g-3, .g-4, .g-5 { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-auto-rows: 170px; }
.bcase-gallery .bcase-photo, .g-2 .bcase-photo:nth-child(2), .g-3 .bcase-photo:nth-child(n+2), .g-4 .bcase-photo:nth-child(n+2), .g-4 .bcase-photo:nth-child(4) { grid-column: auto; grid-row: auto; }
.bcase-gallery .bcase-photo:first-child { grid-column: 1 / -1; grid-row: span 2; }
.bcase-gallery .bcase-photo:last-child:nth-child(even) { grid-column: 1 / -1; }
.g-1 { grid-auto-rows: 170px; }
.bcase-photo { background: #fff; }
@media (max-width: 860px) {
  .bcase-gallery, .g-1, .g-2, .g-3, .g-4, .g-5 { grid-auto-rows: 120px; }
}
.svc-list { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.ai-case-logo { filter: brightness(0) saturate(100%) invert(13%) sepia(38%) saturate(1900%) hue-rotate(200deg) brightness(92%); height: 34px; }

/* logo strip additions: Advoo is white at source; raster logos sized to match */
.logo-track .logo-advoo { filter: brightness(0); opacity: 0.6; height: 22px; }
.logo-track li:hover .logo-advoo { filter: brightness(0); opacity: 0.95; }
.logo-track .logo-goojodoq { height: 20px; }
.logo-track .logo-gokoco { height: 26px; }

/* brand page: media logo wall */
.media-logos { list-style: none; margin: 0; padding: 24px; display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; background: var(--glass); border: 1px solid var(--line); border-radius: var(--r); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); }
.media-logos li { display: flex; align-items: center; justify-content: center; height: 88px; padding: 0 18px; background: rgba(255, 255, 255, 0.72); border: 1px solid var(--line); border-radius: var(--r-sm); }
.media-logos img { max-height: 34px; max-width: 100%; width: auto; filter: grayscale(1) contrast(1.05); opacity: 0.75; transition: opacity 0.2s ease, filter 0.2s ease; }
.media-logos img[src$="bfmtv.svg"] { max-height: 52px; }
.media-logos li:hover img { filter: none; opacity: 1; }
.media-logos .media-text { font-weight: 700; color: var(--text-2); }

/* service card titles: navy like other headings, the gradient stays on the first card's accent edge */
.cell h3, .cell-1 h3 { color: var(--text); background: none; -webkit-background-clip: border-box; background-clip: border-box; font-weight: 700; }
.cell-1 h3 { font-size: 24px; }

/* secondary CTA: book a 30-minute call, next to the diagnosis note */
.cta-alt { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 16px; }
.cta-alt .hero-note, .cta-alt .final-note { margin: 0; }
.cta-alt .btn-ghost { min-height: 44px; padding: 0 20px; font-size: 15px; border-radius: 999px; }
.final .cta-alt { margin-top: -6px; }

/* ---------- Insights (出海获客指南) ---------- */
.section-top { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 36px; }
.section-top h2 { margin: 0; }
.insight-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
.insight-card { position: relative; display: flex; flex-direction: column; gap: 10px; padding: 26px; border-radius: var(--r); background: var(--glass); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); border: 1px solid var(--line); box-shadow: var(--shadow); color: var(--text); text-decoration: none; transition: transform 0.2s ease, background 0.2s ease; }
.insight-card::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; background: var(--grad); opacity: 0; transition: opacity 0.2s ease; -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; }
.insight-card:hover { transform: translateY(-3px); background: var(--glass-strong); }
.insight-card:hover::before { opacity: 1; }
.insight-card h3 { font-size: 19px; font-weight: 750; line-height: 1.35; margin: 0; }
.insight-card p { margin: 0; color: var(--text-2); font-size: 15px; line-height: 1.6; flex: 1; }
.insight-cat { font: 500 11px/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); }
.insight-more { font-size: 14px; font-weight: 600; color: var(--accent); }
.insight-section { padding: 48px 0; }
.insight-section h2 { font-size: clamp(22px, 2.4vw, 28px); margin-bottom: 22px; }
.cat-jump { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.cat-jump a { padding: 8px 16px; border-radius: 999px; background: var(--glass-strong); border: 1px solid var(--line); color: var(--text); text-decoration: none; font-size: 14px; font-weight: 600; }
.cat-jump a:hover { border-color: var(--accent); color: var(--accent); }
.article-hero h1 { font-size: clamp(30px, 3.8vw, 46px); }
.article-hero .lede { max-width: none; }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; font-size: 14px; color: var(--muted); margin-bottom: 18px; }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--accent); }
.article-meta { font: 400 13px var(--mono); color: var(--muted); }
.article-wrap { padding: 8px 0 64px; }
.takeaways, .toc { padding: 22px 26px; border-radius: var(--r); background: var(--glass-strong); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); border: 1px solid var(--line); box-shadow: var(--shadow); margin-bottom: 18px; }
.takeaways { border-left: 3px solid var(--accent); }
.takeaways ul, .toc ol { margin: 0; padding-left: 20px; color: var(--text-2); }
.takeaways li, .toc li { margin: 6px 0; }
.toc a { color: var(--text-2); text-decoration: none; }
.toc a:hover { color: var(--accent); }
.toc-title { font: 600 12px var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin: 0 0 8px; }
.article { margin-top: 40px; }
.article h2 { font-size: clamp(22px, 2.4vw, 28px); margin: 48px 0 14px; scroll-margin-top: 90px; }
.article h3 { font-size: 19px; margin: 28px 0 8px; }
.article p, .article li { color: var(--text-2); }
.article ul, .article ol { padding-left: 22px; }
.article li { margin: 6px 0; }
.article strong { color: var(--text); }
.article a { color: var(--accent); }
.article code { font: 14px var(--mono); background: rgba(37, 99, 235, 0.08); padding: 1px 6px; border-radius: 6px; }
.article blockquote { margin: 24px 0; padding: 16px 22px; border-radius: var(--r-sm); background: var(--glass-strong); border-left: 3px solid var(--accent); }
.article blockquote p { margin: 0; color: var(--text); }
.article .table-wrap { margin: 20px 0; overflow-x: auto; border-radius: var(--r-sm); border: 1px solid var(--line); background: var(--glass-strong); }
.article-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.article-table th, .article-table td { text-align: left; vertical-align: top; padding: 11px 14px; border-bottom: 1px solid var(--line); }
.article-table thead th { font: 500 12px var(--mono); letter-spacing: 0.06em; color: var(--muted); }
.article-table tbody tr:last-child > * { border-bottom: 0; }
.article-back { margin-top: 40px; }
.insight-related { padding-top: 24px; }
.final .lede { margin: 0; max-width: 40em; }
@media (max-width: 760px) {
  .insight-grid { grid-template-columns: 1fr; }
  .takeaways, .toc { padding: 18px; }
}