/* ============================================================
   易翻墙 (efq.homes) — original visual identity
   Format: long-form single-column "verification report / dossier"
   — a report-styled deep-dive on one product's three tiers,
   NOT a nav-hub, NOT a dark radar grid, NOT a purple review-lab,
   NOT a warm paper handbook.
   Palette: crisp white background, deep navy primary, single
   teal accent reserved for CTAs and status marks — a clinical,
   corporate "audit report" look.
   (deliberately distinct from itz.mom's cream+green+orange,
   itz.lat's dark navy+cyan, ifq.lol's light purple+coral, and
   ifq.homes's warm paper+burgundy+brass)
   ============================================================ */

:root {
    --bg-page: #f5f7fb;
    --bg-page-alt: #eceff5;
    --bg-card: #ffffff;
    --bg-card-2: #f7f9fc;
    --bg-panel: #eef1f7;
    --border-color: #dde3ee;
    --border-soft: #e7ebf3;
    --primary: #123a63;
    --primary-dark: #0b2743;
    --primary-rgb: 18, 58, 99;
    --primary-bright: #2f6bb0;
    --accent: #0e8f7c;
    --accent-dark: #0b6e5f;
    --accent-rgb: 14, 143, 124;
    --text-main: #101827;
    --text-muted: #4b5768;
    --text-soft: #8492a6;
    --danger: #c0392b;
    --danger-rgb: 192, 57, 43;
    --good: #1f9d6e;
    --good-rgb: 31, 157, 110;
    --font-mono: "SFMono-Regular", Consolas, "Roboto Mono", monospace;
    color-scheme: light;
}

[data-theme="dark"] {
    --bg-page: #0a1120;
    --bg-page-alt: #0d1526;
    --bg-card: #121b2d;
    --bg-card-2: #162034;
    --bg-panel: #121b2d;
    --border-color: #223049;
    --border-soft: #1b2740;
    --primary: #6ba3de;
    --primary-dark: #4d86c4;
    --primary-rgb: 107, 163, 222;
    --primary-bright: #93bfe8;
    --accent: #35c6ac;
    --accent-dark: #26a58e;
    --accent-rgb: 53, 198, 172;
    --text-main: #eef2f8;
    --text-muted: #b6c1d3;
    --text-soft: #7c8aa0;
    --danger: #ef7a6c;
    --danger-rgb: 239, 122, 108;
    --good: #4ad999;
    --good-rgb: 74, 217, 153;
    color-scheme: dark;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg-page);
    color: var(--text-main);
    line-height: 1.72;
    transition: background 0.25s ease, color 0.25s ease;
}
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; }
code { background: rgba(var(--primary-rgb), 0.08); color: var(--primary-dark); padding: 2px 6px; border-radius: 4px; font-size: 0.92em; font-family: var(--font-mono); }
[data-theme="dark"] code { color: var(--primary-bright); }
.container { max-width: 1140px; margin: 0 auto; padding: 0 5%; }
section { padding: 60px 5%; position: relative; }

/* Faint blueprint/grid texture, fixed on page — evokes an audit ledger, not a tech dashboard */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(var(--primary-rgb), 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(var(--primary-rgb), 0.035) 1px, transparent 1px);
    background-size: 46px 46px;
    -webkit-mask-image: radial-gradient(ellipse 1100px 620px at 50% 0%, black 0%, transparent 72%);
    mask-image: radial-gradient(ellipse 1100px 620px at 50% 0%, black 0%, transparent 72%);
    opacity: 0.7;
}
[data-theme="dark"] body::before { opacity: 0.5; }
nav, header, section, footer, main { position: relative; z-index: 1; }

/* Top disclosure bar */
.top-disclosure {
    background: var(--primary-dark);
    color: #eaf1fa;
    text-align: center;
    font-size: 12.5px;
    padding: 8px 5%;
    position: relative;
    z-index: 1001;
}
.top-disclosure a { text-decoration: underline; color: #eaf1fa; font-weight: 600; }
[data-theme="dark"] .top-disclosure { background: #050a14; }

/* Navbar */
.navbar {
    position: sticky; top: 0; width: 100%; z-index: 1000;
    background: rgba(245, 247, 251, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    display: flex; justify-content: space-between; align-items: center;
    padding: 0 5%; height: 66px; gap: 18px;
}
[data-theme="dark"] .navbar { background: rgba(10, 17, 32, 0.92); }
.nav-brand { font-size: 17px; font-weight: 800; color: var(--text-main); display: flex; align-items: center; gap: 10px; letter-spacing: 0.2px; flex-shrink: 0; }
.nav-brand .brand-cn { color: var(--text-main); }
.nav-brand .brand-en { color: var(--text-soft); font-weight: 700; font-size: 10.5px; letter-spacing: 1.6px; margin-left: 1px; }
.verify-mark { width: 28px; height: 28px; border-radius: 7px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; color: var(--primary); background: rgba(var(--primary-rgb), 0.08); border: 1px solid rgba(var(--primary-rgb), 0.25); }
.menu-toggle { display: none; font-size: 24px; cursor: pointer; color: var(--text-main); background: none; border: none; }
.nav-menu-wrapper { display: flex; align-items: center; gap: 20px; flex: 1; justify-content: flex-end; min-width: 0; }
.nav-links { display: flex; gap: 18px; flex-wrap: nowrap; }
.nav-links a { font-weight: 600; font-size: 13.5px; color: var(--text-muted); transition: color 0.2s; white-space: nowrap; }
.nav-links a:hover, .nav-links a.is-current { color: var(--primary); }
.nav-tools { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.search-box { position: relative; }
.search-box input { width: 148px; padding: 7px 12px 7px 30px; border-radius: 8px; border: 1px solid var(--border-color); background: var(--bg-card); color: var(--text-main); font-size: 13px; outline: none; transition: width 0.2s, border-color 0.2s; }
.search-box input:focus { width: 196px; border-color: rgba(var(--primary-rgb), 0.5); }
.search-box .search-icon { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); font-size: 12px; color: var(--text-soft); pointer-events: none; }
.search-results { position: absolute; top: calc(100% + 8px); right: 0; width: 300px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 10px; box-shadow: 0 14px 34px rgba(15, 26, 45, 0.14); padding: 8px; display: none; max-height: 340px; overflow-y: auto; z-index: 1200; }
.search-results.active { display: block; }
.search-results a { display: block; padding: 9px 11px; border-radius: 7px; font-size: 13.5px; color: var(--text-main); }
.search-results a:hover { background: var(--bg-panel); }
.search-results a small { display: block; color: var(--text-soft); font-size: 11.5px; margin-top: 2px; font-weight: 400; }
.search-empty { padding: 10px 11px; font-size: 13px; color: var(--text-soft); }
.theme-toggle { display: flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: 7px; border: 1px solid var(--border-color); background: var(--bg-card); color: var(--text-main); font-size: 14px; cursor: pointer; flex-shrink: 0; }
.theme-toggle:hover { border-color: rgba(var(--primary-rgb), 0.5); }
.nav-actions .btn { padding: 9px 18px; font-size: 13.5px; }

/* Buttons */
.btn { display: inline-block; padding: 12px 26px; border-radius: 6px; font-weight: 700; text-align: center; transition: all 0.2s; cursor: pointer; border: 1px solid transparent; font-size: 15px; }
.btn-primary { background: var(--accent); color: #ffffff; box-shadow: 0 8px 20px rgba(var(--accent-rgb), 0.26); }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-1px); }
.btn-navy { background: var(--primary); color: #ffffff; box-shadow: 0 8px 20px rgba(var(--primary-rgb), 0.22); }
.btn-navy:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-outline { border: 1px solid var(--border-color); color: var(--text-main); background: var(--bg-card); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 8px 18px; font-size: 13.5px; }
.btn-block { display: block; width: 100%; }

/* ============ Report header (homepage) ============ */
.report-header { max-width: 900px; margin: 0 auto; text-align: left; padding: 56px 5% 40px; border-bottom: 1px solid var(--border-color); }
.report-id { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 12px; color: var(--text-soft); background: var(--bg-card); border: 1px solid var(--border-color); padding: 6px 14px; border-radius: 20px; margin-bottom: 22px; }
.report-id .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--good); box-shadow: 0 0 6px 1px rgba(var(--good-rgb), 0.7); flex-shrink: 0; }
.report-header h1 { font-size: 36px; line-height: 1.38; margin-bottom: 16px; color: var(--text-main); max-width: 800px; }
.report-header h1 em { color: var(--primary); font-style: normal; }
[data-theme="dark"] .report-header h1 em { color: var(--primary-bright); }
.report-lede { font-size: 15.5px; color: var(--text-muted); max-width: 720px; margin-bottom: 28px; }

.trust-badges { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 30px; }
.trust-badge { display: flex; align-items: center; gap: 8px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 8px; padding: 10px 16px; font-size: 13px; color: var(--text-muted); }
.trust-badge .tb-ico { color: var(--accent); font-weight: 800; }

.verdict-box { background: var(--bg-card); border: 1px solid var(--border-color); border-left: 4px solid var(--accent); border-radius: 6px; padding: 22px 26px; margin-bottom: 28px; }
.verdict-box h2 { font-size: 16.5px; margin-bottom: 12px; color: var(--text-main); }
.verdict-box ul { padding-left: 0; }
.verdict-box li { font-size: 14.5px; color: var(--text-muted); margin-bottom: 8px; padding-left: 22px; position: relative; }
.verdict-box li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-weight: 800; }
.verdict-box li strong { color: var(--text-main); }

.report-btns { display: flex; gap: 14px; flex-wrap: wrap; }

/* ============ Methodology mini-section (three honesty principles) ============ */
.principle-strip { background: var(--bg-page-alt); border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); padding: 40px 5%; }
.principle-grid { max-width: 1000px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.principle-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 10px; padding: 22px 22px; }
.principle-card .pc-num { font-family: var(--font-mono); font-size: 12px; color: var(--accent); font-weight: 700; margin-bottom: 8px; letter-spacing: 1px; }
.principle-card h3 { font-size: 15.5px; margin-bottom: 8px; color: var(--text-main); }
.principle-card p { font-size: 13.3px; color: var(--text-muted); }

/* ============ Jump nav (sticky pills to each tier / section) ============ */
.jump-nav-wrap { position: sticky; top: 66px; z-index: 900; background: var(--bg-page); border-bottom: 1px solid var(--border-color); }
.jump-nav { max-width: 1000px; margin: 0 auto; display: flex; gap: 8px; overflow-x: auto; padding: 12px 5%; scrollbar-width: thin; }
.jump-nav a { flex-shrink: 0; font-size: 13px; font-weight: 600; color: var(--text-muted); background: var(--bg-card); border: 1px solid var(--border-color); padding: 8px 16px; border-radius: 20px; white-space: nowrap; transition: all 0.15s; }
.jump-nav a:hover { border-color: var(--primary); color: var(--primary); }

/* Section head */
.section-head { text-align: center; margin-bottom: 36px; max-width: 760px; margin-left: auto; margin-right: auto; }
.section-head .eyebrow { display: inline-block; font-size: 11.5px; font-weight: 700; color: var(--primary); background: rgba(var(--primary-rgb), 0.08); padding: 4px 14px; border-radius: 20px; margin-bottom: 14px; letter-spacing: 1px; }
[data-theme="dark"] .section-head .eyebrow { color: var(--primary-bright); }
.section-head h2 { font-size: 26px; margin-bottom: 10px; color: var(--text-main); }
.section-head p { font-size: 14.5px; color: var(--text-muted); }
.section-head.align-left { text-align: left; margin-left: 0; }

.disclosure-banner { max-width: 1000px; margin: 0 auto 26px; background: rgba(var(--primary-rgb), 0.06); border: 1px dashed rgba(var(--primary-rgb), 0.35); border-radius: 8px; padding: 14px 20px; font-size: 13px; color: var(--text-muted); text-align: center; }
.disclosure-banner strong { color: var(--primary); }
[data-theme="dark"] .disclosure-banner strong { color: var(--primary-bright); }

/* ============ Tier report cards (the "our detailed test results" section) ============ */
.tier-report { max-width: 1000px; margin: 0 auto; display: flex; flex-direction: column; gap: 28px; }
.tier-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 14px; padding: 30px 32px; scroll-margin-top: 130px; }
.tier-card.is-reco { border-color: rgba(var(--accent-rgb), 0.4); box-shadow: 0 20px 44px rgba(15, 26, 45, 0.06); }
[data-theme="dark"] .tier-card.is-reco { box-shadow: 0 20px 44px rgba(0,0,0,0.35); }
.tier-card-head { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 12px; margin-bottom: 6px; }
.tier-rank { display: inline-flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 800; color: var(--text-main); }
.tier-rank .medal { font-size: 20px; }
.tier-rank-note { font-size: 12.5px; color: var(--text-soft); margin-top: 4px; }
.reco-chip { display: inline-flex; align-items: center; background: var(--accent); color: #fff; font-size: 11px; font-weight: 800; padding: 4px 12px; border-radius: 20px; letter-spacing: 0.3px; }
.tier-name { font-size: 22px; font-weight: 800; color: var(--text-main); margin: 6px 0 4px; }
.tier-tagline { font-size: 14px; color: var(--text-muted); margin-bottom: 22px; }

.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 20px; }
.metric-cell { background: var(--bg-panel); border-radius: 10px; padding: 14px 16px; }
.metric-cell .m-label { font-size: 11px; color: var(--text-soft); margin-bottom: 6px; display: flex; align-items: center; gap: 5px; }
.metric-cell .m-value { font-size: 14.5px; font-weight: 700; color: var(--text-main); line-height: 1.4; }
.metric-cell.untested .m-value { color: var(--text-soft); font-weight: 600; font-size: 13px; }
.tag-vendor { display: inline-block; font-size: 9.5px; font-weight: 700; color: var(--primary); background: rgba(var(--primary-rgb), 0.09); padding: 1px 7px; border-radius: 10px; margin-left: 5px; vertical-align: middle; }
[data-theme="dark"] .tag-vendor { color: var(--primary-bright); }
.tag-untested { display: inline-block; font-size: 9.5px; font-weight: 700; color: var(--text-soft); background: var(--bg-card-2); border: 1px dashed var(--border-color); padding: 1px 7px; border-radius: 10px; margin-left: 5px; vertical-align: middle; }

.platform-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; }
.platform-chip { display: flex; align-items: center; gap: 6px; background: var(--bg-panel); border-radius: 20px; padding: 6px 13px; font-size: 12.5px; color: var(--text-muted); }

.best-for { background: rgba(var(--accent-rgb), 0.07); border-left: 3px solid var(--accent); border-radius: 6px; padding: 14px 18px; margin-bottom: 22px; font-size: 14px; color: var(--text-muted); }
.best-for strong { color: var(--text-main); }

.tier-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.tier-coupon { font-size: 13px; color: var(--text-muted); }

.compare-fineprint { max-width: 1000px; margin: 20px auto 0; font-size: 12.3px; color: var(--text-soft); text-align: center; }

/* ============ Generic report-page prose (wuyoulink.html / guide-choosing.html) ============ */
.report-wrap { max-width: 880px; margin: 0 auto; padding: 44px 5% 90px; }
.breadcrumb { font-size: 13px; color: var(--text-soft); margin-bottom: 18px; }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.report-wrap h1 { font-size: 30px; line-height: 1.42; margin-bottom: 14px; color: var(--text-main); }
.report-meta { font-size: 12.5px; color: var(--text-soft); margin-bottom: 28px; padding-bottom: 20px; border-bottom: 1px solid var(--border-color); display: flex; gap: 16px; flex-wrap: wrap; }
.summary-box { background: var(--bg-card); border: 1px solid var(--border-color); border-left: 3px solid var(--primary); border-radius: 6px; padding: 18px 22px; margin-bottom: 28px; font-size: 15px; color: var(--text-muted); }
.summary-box strong { color: var(--primary); }
[data-theme="dark"] .summary-box strong { color: var(--primary-bright); }

.prose h2 { font-size: 21px; margin: 34px 0 14px; color: var(--text-main); }
.prose h3 { font-size: 16.5px; margin: 24px 0 10px; color: var(--text-main); font-weight: 700; }
.prose p { font-size: 15.2px; color: var(--text-muted); margin-bottom: 16px; }
.prose ul, .prose ol.decimal { padding-left: 22px; margin-bottom: 16px; color: var(--text-muted); }
.prose ul { list-style: disc; }
.prose ol.decimal { list-style: decimal; }
.prose li { margin-bottom: 7px; font-size: 15.2px; }
.prose a { color: var(--primary); text-decoration: underline; }
[data-theme="dark"] .prose a { color: var(--primary-bright); }
.prose table { width: 100%; border-collapse: collapse; margin: 18px 0 26px; font-size: 14px; }
.prose th, .prose td { border: 1px solid var(--border-color); padding: 10px 12px; text-align: left; }
.prose th { background: var(--bg-panel); }

.quick-access { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 12px; padding: 22px 24px; margin-bottom: 30px; }
.quick-access .qa-text { flex: 1; min-width: 220px; }
.quick-access .qa-text h3 { font-size: 16px; margin-bottom: 6px; }
.quick-access .qa-text p { font-size: 13.3px; color: var(--text-muted); }
.promo-pill { display: inline-flex; align-items: center; gap: 8px; background: rgba(var(--accent-rgb), 0.09); border: 1px dashed rgba(var(--accent-rgb), 0.5); border-radius: 8px; padding: 8px 14px; font-size: 13px; color: var(--accent-dark); margin-top: 10px; }
[data-theme="dark"] .promo-pill { color: var(--accent); }
.promo-pill code { background: transparent; color: inherit; font-weight: 800; letter-spacing: 1px; padding: 0; }

.spec-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 10px; }
.spec-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 10px; padding: 18px 16px; }
.spec-card .spec-label { font-size: 11.5px; color: var(--text-soft); margin-bottom: 8px; }
.spec-card .spec-value { font-size: 14px; font-weight: 700; color: var(--text-main); line-height: 1.4; }
.spec-note { font-size: 12px; color: var(--text-soft); margin: 12px 0 34px; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin: 24px 0 10px; }
.pro-list, .caution-list { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 10px; padding: 20px 22px; }
.pro-list h4, .caution-list h4 { font-size: 14.5px; margin-bottom: 12px; }
.pro-list h4 { color: var(--good); }
.caution-list h4 { color: var(--danger); }
.pro-list li, .caution-list li { font-size: 13.8px; color: var(--text-muted); margin-bottom: 9px; padding-left: 18px; position: relative; list-style: none; }
.pro-list li::before { content: "✓"; position: absolute; left: 0; color: var(--good); font-weight: 800; }
.caution-list li::before { content: "!"; position: absolute; left: 2px; color: var(--danger); font-weight: 800; }

.shop-wrap { max-width: 100%; margin: 0 auto; overflow-x: auto; }
.shop-table { width: 100%; border-collapse: separate; border-spacing: 0; min-width: 700px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 12px; overflow: hidden; }
.shop-table th, .shop-table td { padding: 15px 16px; text-align: left; font-size: 13.6px; border-bottom: 1px solid var(--border-soft); vertical-align: top; }
.shop-table thead th { background: var(--bg-panel); color: var(--text-soft); font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.5px; }
.shop-table tbody tr:last-child td { border-bottom: none; }
.shop-table tbody tr.is-reco { background: rgba(var(--accent-rgb), 0.05); }
.reco-chip-sm { background: var(--accent); color: #fff; font-size: 10.5px; font-weight: 800; padding: 2px 9px; border-radius: 10px; margin-left: 6px; }

.related-links { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border-color); }
.related-links h4 { font-size: 14px; margin-bottom: 12px; color: var(--text-soft); }
.related-links li { list-style: none; margin-bottom: 8px; }
.related-links a { color: var(--primary); font-weight: 600; font-size: 14.2px; }
[data-theme="dark"] .related-links a { color: var(--primary-bright); }

/* Client download grid */
.client-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin: 24px 0 10px; }
.client-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 12px; padding: 20px 14px; text-align: center; transition: transform 0.2s, border-color 0.2s; }
.client-card:hover { transform: translateY(-3px); border-color: rgba(var(--primary-rgb), 0.3); }
.client-card .client-icon { font-size: 25px; margin-bottom: 10px; }
.client-card h4 { font-size: 14.5px; margin-bottom: 6px; }
.client-card .client-os { font-size: 11px; color: var(--text-soft); background: var(--bg-panel); display: inline-block; padding: 2px 9px; border-radius: 6px; margin-bottom: 10px; }
.client-card p { font-size: 12.3px; color: var(--text-muted); margin-bottom: 14px; min-height: 50px; }
.mirror-note { background: var(--bg-card); border: 1px solid var(--border-color); border-left: 4px solid var(--primary); border-radius: 10px; padding: 18px 22px; font-size: 13.5px; color: var(--text-muted); margin: 24px 0; }
.mirror-note strong { color: var(--primary); }
[data-theme="dark"] .mirror-note strong { color: var(--primary-bright); }

.teaser-row { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; max-width: 1000px; margin: 0 auto; }
.teaser-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 12px; padding: 24px 26px; }
.teaser-card .teaser-icon { font-size: 24px; margin-bottom: 10px; }
.teaser-card h3 { font-size: 16px; margin-bottom: 8px; }
.teaser-card p { font-size: 13.5px; color: var(--text-muted); }

.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; max-width: 1000px; margin: 0 auto; }
.guide-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 10px; padding: 20px 22px; }
.guide-num { font-family: var(--font-mono); font-size: 11px; font-weight: 700; color: var(--accent); margin-bottom: 8px; letter-spacing: 1px; }
.guide-card h3 { font-size: 15px; margin-bottom: 6px; }
.guide-card p { font-size: 13.3px; color: var(--text-muted); }

/* Checklist (choosing guide) */
.checklist { display: flex; flex-direction: column; gap: 4px; }
.checklist-item { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 10px; padding: 18px 20px; margin-bottom: 12px; }
.checklist-item .ci-num { display: inline-block; font-family: var(--font-mono); font-size: 12px; font-weight: 700; color: var(--primary); background: rgba(var(--primary-rgb), 0.08); padding: 2px 10px; border-radius: 20px; margin-bottom: 9px; }
[data-theme="dark"] .checklist-item .ci-num { color: var(--primary-bright); }
.checklist-item h3 { font-size: 15px; margin-bottom: 6px; color: var(--text-main); }
.checklist-item p { font-size: 13.8px; color: var(--text-muted); }

/* FAQ */
.faq-list { max-width: 100%; }
.faq-list details { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 10px; padding: 16px 20px; margin-bottom: 10px; }
.faq-list details[open] { border-color: rgba(var(--primary-rgb), 0.35); }
.faq-list summary { font-weight: 700; cursor: pointer; font-size: 15px; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::before { content: "▸"; color: var(--primary); margin-right: 10px; display: inline-block; transition: transform 0.2s; }
[data-theme="dark"] .faq-list summary::before { color: var(--primary-bright); }
.faq-list details[open] summary::before { transform: rotate(90deg); }
.faq-list p { margin-top: 10px; font-size: 14px; color: var(--text-muted); }

/* Bottom CTA */
.bottom-cta { text-align: center; background: linear-gradient(120deg, rgba(var(--primary-rgb),0.07), rgba(var(--accent-rgb),0.08)); border: 1px solid var(--border-color); border-radius: 16px; max-width: 1140px; margin: 0 auto; padding: 50px 5%; }
.bottom-cta h2 { font-size: 23px; margin-bottom: 12px; color: var(--text-main); }
.bottom-cta p { color: var(--text-muted); margin-bottom: 22px; font-size: 15px; }

/* Subpage (about/terms/privacy/sitemap) */
.subpage-header { padding: 84px 5% 40px; text-align: center; border-bottom: 1px solid var(--border-color); }
.subpage-header h1 { font-size: 27px; margin-bottom: 10px; color: var(--text-main); }
.subpage-header p { color: var(--text-muted); font-size: 15px; }
.subpage-content { padding: 50px 5%; max-width: 780px; margin: 0 auto; color: var(--text-muted); font-size: 15.2px; }
.subpage-content h2 { color: var(--text-main); margin: 28px 0 14px; font-size: 19px; }
.subpage-content p { margin-bottom: 15px; }
.subpage-content ul { padding-left: 20px; margin-bottom: 15px; list-style: disc; }
.subpage-content li { margin-bottom: 7px; }

/* Footer */
footer { border-top: 1px solid var(--border-color); padding: 50px 5% 32px; background: var(--bg-page-alt); color: var(--text-muted); text-align: center; }
.footer-logo { font-size: 18px; font-weight: 800; color: var(--text-main); margin-bottom: 22px; display: flex; align-items: center; justify-content: center; gap: 9px; }
.footer-links { display: flex; justify-content: center; gap: 26px; margin-bottom: 24px; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); transition: color 0.2s; font-size: 14px; }
.footer-links a:hover { color: var(--primary); }
.footer-friends { margin-bottom: 20px; font-size: 13.3px; color: var(--text-soft); }
.footer-friends a { color: var(--text-soft); transition: color 0.2s; margin: 0 8px; }
.footer-friends a:hover { color: var(--primary); }
.footer-disclosure { font-size: 12px; color: var(--text-soft); max-width: 720px; margin: 0 auto 18px; line-height: 1.6; }
.footer-copy { color: var(--text-soft); font-size: 12.3px; }

/* Mobile */
@media (max-width: 1020px) {
    .metrics-grid { grid-template-columns: repeat(2, 1fr); }
    .client-grid { grid-template-columns: repeat(3, 1fr); }
    .spec-grid { grid-template-columns: repeat(2, 1fr); }
    .principle-grid { grid-template-columns: 1fr; }
    .guide-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .nav-menu-wrapper { display: none; flex-direction: column; align-items: stretch; position: absolute; top: 66px; left: 0; width: 100%; background: var(--bg-page); padding: 22px 20px; border-bottom: 1px solid var(--border-color); gap: 16px; }
    .nav-menu-wrapper.active { display: flex; }
    .menu-toggle { display: block; }
    .nav-links { flex-direction: column; gap: 14px; text-align: center; width: 100%; }
    .nav-tools { justify-content: center; }
    .search-box input, .search-box input:focus { width: 100%; }
    .report-header h1 { font-size: 26px; }
    section { padding: 42px 5%; }
    .report-wrap h1 { font-size: 22px; }
    .footer-links { gap: 14px; flex-direction: column; }
    .metrics-grid { grid-template-columns: 1fr 1fr; }
    .two-col { grid-template-columns: 1fr; }
    .client-grid { grid-template-columns: repeat(2, 1fr); }
    .teaser-row { grid-template-columns: 1fr; }
    .trust-badges { flex-direction: column; align-items: stretch; }
    .jump-nav-wrap { top: 0; }
}
@media (max-width: 420px) {
    .metrics-grid, .spec-grid, .client-grid { grid-template-columns: 1fr; }
}