:root {
    --primary: #6F5AE8;
    --primary-soft: #9A8CF2;
    --dark: #242433;
    --bg: #F8F8FC;
    --soft: #F0EEFA;
    --text: #30303A;
    --muted: #70707D;
    --accent: #F29A4A;
    --white: #FFFFFF;
    --line: #DEDBEF;
    --shadow: 0 24px 70px rgba(36, 36, 51, .10);
    --radius-lg: 30px;
    --radius-md: 20px;
    --radius-sm: 13px;
    --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.75; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
.container { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.narrow { width: min(calc(100% - 40px), 880px); }
.skip-link { position: fixed; left: 16px; top: 12px; transform: translateY(-150%); background: var(--dark); color: #fff; padding: 10px 14px; z-index: 1000; border-radius: 8px; }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(248,248,252,.94); backdrop-filter: blur(14px); border-bottom: 1px solid rgba(222,219,239,.85); }
.header-inner { min-height: 76px; display: flex; align-items: center; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--dark); letter-spacing: -.02em; white-space: nowrap; }
.brand img { border-radius: 11px; object-fit: contain; }
.site-nav { margin-left: auto; display: flex; align-items: center; gap: 6px; }
.site-nav a { padding: 10px 12px; border-radius: 10px; color: #535361; font-size: 15px; }
.site-nav a:hover, .site-nav a[aria-current="page"] { background: var(--soft); color: var(--primary); }
.search-open, .nav-toggle { border: 1px solid var(--line); background: var(--white); color: var(--dark); padding: 9px 14px; border-radius: 11px; }
.nav-toggle { display: none; }
.search-modal[hidden] { display: none !important; }
.search-modal { position: fixed; inset: 0; z-index: 400; display: grid; place-items: start center; padding-top: 12vh; background: rgba(24,24,34,.58); }
.search-panel { width: min(calc(100% - 30px), 700px); background: #fff; border-radius: 24px; padding: 26px; box-shadow: var(--shadow); }
.search-panel-head { display: flex; gap: 24px; justify-content: space-between; align-items: flex-start; }
.search-panel h2 { margin: 4px 0 18px; font-size: clamp(24px, 4vw, 34px); line-height: 1.25; }
.icon-button { border: 0; background: var(--soft); width: 42px; height: 42px; border-radius: 50%; font-size: 26px; color: var(--dark); }
.search-form label, .search-page-form label { display: block; font-weight: 700; margin-bottom: 8px; }
.search-input-row, .search-page-form > div { display: flex; gap: 10px; }
.search-input-row input, .search-page-form input { flex: 1; min-width: 0; border: 1px solid var(--line); border-radius: 12px; padding: 13px 15px; background: #fff; color: var(--text); }
.search-hint { color: var(--muted); margin: 12px 0 0; font-size: 14px; }
.eyebrow { display: inline-block; color: var(--primary); font-weight: 800; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; }
.eyebrow-light { color: #cfc8ff; }
.hero { padding: 82px 0 68px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.02fr .98fr; gap: 58px; align-items: center; }
.hero h1, .page-hero h1, .error-page h1 { color: var(--dark); letter-spacing: -.045em; line-height: 1.08; margin: 14px 0 22px; font-size: clamp(42px, 6vw, 72px); }
.hero-lead, .page-lead { color: #555563; font-size: clamp(18px, 2.1vw, 22px); line-height: 1.75; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 11px 18px; border-radius: 12px; font-weight: 800; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
.button:hover { transform: translateY(-1px); }
.button-primary { background: var(--accent); color: #2f2114; box-shadow: 0 12px 30px rgba(242,154,74,.22); border: 0; }
.button-secondary { background: var(--white); border: 1px solid var(--line); color: var(--dark); }
.button-light { background: #fff; color: var(--dark); }
.hero-notes { margin: 30px 0 0; padding: 0; list-style: none; display: grid; gap: 9px; color: var(--muted); }
.hero-notes li { position: relative; padding-left: 24px; }
.hero-notes li::before { content: ""; position: absolute; left: 2px; top: .72em; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); }
.hero-media { position: relative; padding: 20px 0 44px 24px; }
.hero-media::before { content: ""; position: absolute; inset: 0 10% 8% 0; background: var(--soft); border-radius: 50px 120px 50px 120px; z-index: -1; transform: rotate(-3deg); }
.hero-media img { border-radius: 28px; box-shadow: var(--shadow); }
.hero-status { position: absolute; right: -10px; bottom: 2px; background: var(--dark); color: #fff; padding: 18px 20px; border-radius: 18px; min-width: 240px; box-shadow: 0 18px 40px rgba(36,36,51,.22); display: grid; gap: 5px; }
.hero-status strong { font-size: 15px; margin-bottom: 4px; }
.hero-status span { color: #d8d6e6; font-size: 13px; }
.section { padding: 78px 0; }
.section-soft { background: var(--soft); }
.section-dark { background: var(--dark); color: #fff; }
.section-head { max-width: 820px; margin-bottom: 34px; }
.section-head h2, .topic-copy h2, .content-panel h2, .about-slab h2, .page-feature-grid h2, .prose-block h2, .decision-grid h2, .inline-guide h2 { margin: 8px 0 12px; color: var(--dark); font-size: clamp(30px, 4vw, 46px); line-height: 1.18; letter-spacing: -.035em; }
.section-head p, .topic-copy p, .content-panel p, .about-slab p, .page-feature-grid p, .prose-block p, .decision-grid p { color: var(--muted); font-size: 17px; }
.split-head { display: grid; grid-template-columns: 1fr .78fr; gap: 44px; max-width: none; align-items: end; }
.feature-columns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature-column { background: #fff; border: 1px solid #e8e6f1; border-radius: var(--radius-md); overflow: hidden; box-shadow: 0 12px 32px rgba(36,36,51,.05); }
.feature-column img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.feature-column-body { padding: 22px; }
.feature-column h3 { margin: 0 0 8px; font-size: 23px; color: var(--dark); }
.feature-column p { color: var(--muted); margin: 0 0 15px; }
.text-link { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-weight: 800; }
.text-link span { transition: transform .18s ease; }
.text-link:hover span { transform: translateX(3px); }
.topic-split, .page-feature-grid { display: grid; grid-template-columns: .92fr 1.08fr; gap: 58px; align-items: center; }
.topic-image img, .page-feature-grid img { border-radius: 26px; box-shadow: var(--shadow); }
.plain-list { display: grid; gap: 14px; margin-top: 24px; }
.plain-list div { display: grid; grid-template-columns: 120px 1fr; gap: 20px; padding: 15px 0; border-top: 1px solid var(--line); }
.plain-list strong { color: var(--dark); }
.plain-list span { color: var(--muted); }
.route-list { display: grid; border-top: 1px solid var(--line); }
.route-list article { display: grid; grid-template-columns: 76px 1fr; gap: 24px; padding: 27px 0; border-bottom: 1px solid var(--line); }
.route-number { color: var(--primary); font-weight: 900; font-size: 14px; padding-top: 8px; }
.route-list h3 { margin: 0 0 5px; font-size: 25px; color: var(--dark); }
.route-list p { margin: 0 0 10px; color: var(--muted); }
.route-list a { color: var(--primary); font-weight: 800; }
.editorial-strip { display: grid; grid-template-columns: 1fr .95fr auto; gap: 36px; align-items: center; }
.editorial-strip h2, .inline-guide h2 { color: #fff; margin: 8px 0 0; font-size: clamp(28px, 4vw, 44px); line-height: 1.2; }
.editorial-strip p, .inline-guide p { color: #d6d5df; margin: 0; }
.guide-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.guide-card { display: grid; grid-template-columns: 180px 1fr; background: #fff; border: 1px solid #e6e3f0; border-radius: var(--radius-md); overflow: hidden; min-height: 230px; }
.guide-card img { width: 100%; height: 100%; object-fit: cover; }
.guide-card-body { padding: 22px; }
.guide-card h2 { margin: 8px 0 8px; font-size: 22px; line-height: 1.35; color: var(--dark); }
.guide-card p { color: var(--muted); margin: 0 0 14px; }
.tag-row { display: flex; gap: 7px; flex-wrap: wrap; }
.tag { font-size: 12px; padding: 4px 8px; background: var(--soft); color: var(--primary); border-radius: 999px; }
.dual-panel { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.content-panel { background: #fff; border-radius: var(--radius-md); padding: 34px; border: 1px solid #e5e2ef; }
.accent-panel { border-top: 4px solid var(--accent); }
.about-slab { display: grid; grid-template-columns: .72fr 1.28fr; gap: 50px; align-items: center; background: #fff; padding: 24px; border: 1px solid #e7e4f0; border-radius: 30px; }
.about-slab-image img { border-radius: 22px; }
.faq-preview-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.faq-preview-grid article { padding: 24px; border-left: 3px solid var(--primary-soft); background: #fff; }
.faq-preview-grid h3 { margin: 0 0 9px; color: var(--dark); font-size: 20px; }
.faq-preview-grid p { color: var(--muted); margin: 0 0 10px; }
.faq-preview-grid a { color: var(--primary); font-weight: 800; }
.center-action { margin-top: 28px; text-align: center; }
.page-hero { padding: 66px 0 48px; background: linear-gradient(180deg, #F0EEFA 0%, rgba(240,238,250,0) 100%); }
.page-hero h1 { font-size: clamp(40px, 6vw, 66px); }
.breadcrumbs { margin-bottom: 22px; }
.breadcrumbs ol { list-style: none; margin: 0; padding: 0; display: flex; gap: 8px; flex-wrap: wrap; color: var(--muted); font-size: 14px; }
.breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: 8px; color: #aaa7b6; }
.breadcrumbs a:hover { color: var(--primary); }
.scenario-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.scenario-grid article { background: #fff; padding: 26px; border-radius: 18px; border: 1px solid #e8e5f1; }
.scenario-grid h3 { margin: 0 0 9px; color: var(--dark); font-size: 21px; }
.scenario-grid p { margin: 0; color: var(--muted); }
.compare-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.compare-cards article { border: 1px solid var(--line); border-radius: 20px; padding: 28px; background: #fff; }
.status-dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; background: var(--accent); }
.compare-cards h3 { margin: 14px 0 7px; font-size: 24px; }
.compare-cards p { color: var(--muted); }
.compare-cards a { color: var(--primary); font-weight: 800; }
.inline-guide { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.inline-guide .button { margin-top: 18px; }
.two-column-content { display: grid; grid-template-columns: 1.2fr .8fr; gap: 44px; align-items: start; }
.two-column-content h2 { color: var(--dark); font-size: 34px; line-height: 1.25; }
.check-list { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 11px; }
.check-list li { padding-left: 26px; position: relative; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--primary); font-weight: 900; }
.check-list a { color: var(--primary); font-weight: 800; }
.side-note { background: var(--soft); padding: 22px; border-radius: 22px; }
.side-note img { border-radius: 16px; margin-bottom: 18px; }
.side-note h3 { margin: 0 0 8px; }
.side-note p { color: var(--muted); }
.side-note a { color: var(--primary); font-weight: 800; }
.platform-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 28px; }
.platform-tabs a { padding: 9px 14px; border-radius: 999px; background: #fff; border: 1px solid var(--line); color: var(--dark); font-weight: 700; }
.platform-tabs a[aria-current="page"] { background: var(--primary); color: #fff; border-color: var(--primary); }
.platform-detail { background: #fff; padding: 32px; border-radius: 24px; border: 1px solid #e5e2ef; }
.platform-detail h2 { font-size: 34px; margin: 7px 0 9px; }
.number-checks { list-style: none; padding: 0; margin: 24px 0; display: grid; grid-template-columns: repeat(2,1fr); gap: 10px 24px; }
.number-checks li { display: flex; gap: 12px; align-items: baseline; }
.number-checks span { color: var(--primary); font-weight: 900; }
.reverse-mobile { grid-template-columns: 1.02fr .98fr; }
.device-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.device-grid article { background: #fff; padding: 24px; border-radius: 18px; border: 1px solid #e4e1ed; }
.device-grid h3 { margin: 0 0 8px; color: var(--dark); font-size: 23px; }
.device-grid p { color: var(--muted); font-size: 15px; }
.device-grid a { color: var(--primary); font-weight: 800; }
.decision-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 22px; }
.decision-grid article { padding: 30px; border: 1px solid var(--line); border-radius: 22px; background: #fff; }
.decision-grid h2 { font-size: 31px; }
.decision-grid a { color: var(--primary); font-weight: 800; }
.prose-block { background: #fff; border: 1px solid var(--line); border-radius: 24px; padding: 36px; }
.prose-block h2 { font-size: 34px; }
.link-pills { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.link-pills a { padding: 8px 13px; border-radius: 999px; background: var(--soft); color: var(--primary); font-weight: 800; }
.guide-map { display: grid; grid-template-columns: .85fr 1.15fr; gap: 50px; align-items: start; }
.guide-map h2 { font-size: 36px; margin: 8px 0; line-height: 1.25; }
.guide-map p { color: var(--muted); }
.map-list { display: grid; gap: 10px; }
.map-list a { display: grid; gap: 2px; background: #fff; border: 1px solid #e6e3ef; border-radius: 14px; padding: 17px 18px; }
.map-list strong { color: var(--dark); }
.map-list span { color: var(--muted); font-size: 14px; }
.timeline-list, .diagnostic-list, .safety-steps { display: grid; max-width: 920px; margin: 0 auto; }
.timeline-list article, .diagnostic-list article, .safety-steps article { display: grid; grid-template-columns: 72px 1fr; gap: 26px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.timeline-list article > span, .diagnostic-index, .safety-step { color: var(--primary); font-weight: 900; font-size: 14px; padding-top: 8px; }
.timeline-list h2, .diagnostic-list h2, .safety-steps h2 { margin: 0 0 7px; font-size: 27px; color: var(--dark); }
.timeline-list p, .diagnostic-list p, .safety-steps p { margin: 0; color: var(--muted); }
.matrix-table { display: grid; background: #fff; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; }
.matrix-row { display: grid; grid-template-columns: .9fr 1.05fr 1.05fr; }
.matrix-row span { padding: 17px 18px; border-bottom: 1px solid var(--line); }
.matrix-row span + span { border-left: 1px solid var(--line); }
.matrix-head { background: var(--dark); color: #fff; font-weight: 800; }
.matrix-row:last-child span { border-bottom: 0; }
.case-list { display: grid; gap: 14px; }
.case-list article { display: grid; grid-template-columns: .72fr 1.15fr 1.15fr; gap: 24px; align-items: start; padding: 24px; background: #fff; border: 1px solid var(--line); border-radius: 18px; }
.case-title span { color: var(--primary); font-size: 12px; font-weight: 900; letter-spacing: .1em; }
.case-title h2 { margin: 5px 0 0; font-size: 23px; }
.case-list strong { color: var(--dark); }
.case-list p { color: var(--muted); margin: 5px 0 0; }
.warning-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 22px; }
.warning-grid article { padding: 30px; border-radius: 22px; background: #fff; border: 1px solid var(--line); }
.warning-grid h2 { margin: 0; font-size: 29px; }
.privacy-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
.privacy-grid article { padding: 28px; border-top: 3px solid var(--primary-soft); background: #fff; }
.privacy-grid h2 { margin: 0 0 8px; font-size: 25px; }
.privacy-grid p { color: var(--muted); margin: 0; }
.faq-layout { display: grid; grid-template-columns: 1.15fr .45fr; gap: 36px; align-items: start; }
.faq-list { display: grid; gap: 12px; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 17px; overflow: hidden; }
.faq-item h2 { margin: 0; font-size: 19px; }
.faq-item button { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 19px 20px; border: 0; background: transparent; text-align: left; font-weight: 800; color: var(--dark); }
.faq-item button span:last-child { font-size: 24px; color: var(--primary); }
.faq-answer { padding: 0 20px 20px; }
.faq-answer[hidden] { display: none; }
.faq-answer p { color: var(--muted); margin: 0 0 10px; }
.faq-answer a { color: var(--primary); font-weight: 800; }
.faq-side { position: sticky; top: 104px; background: var(--soft); border-radius: 20px; padding: 20px; }
.faq-side img { border-radius: 14px; margin-bottom: 18px; }
.faq-side h2 { font-size: 24px; margin: 0 0 8px; }
.faq-side p { color: var(--muted); }
.faq-side a { display: block; color: var(--primary); font-weight: 800; margin-top: 9px; }
.principles-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 18px; }
.principles-grid article { background: #fff; padding: 28px; border-radius: 20px; border: 1px solid #e5e2ef; }
.principles-grid article > span { color: var(--primary); font-weight: 900; }
.principles-grid h2 { margin: 8px 0 6px; font-size: 25px; }
.principles-grid p { color: var(--muted); margin: 0; }
.feedback-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 22px; }
.feedback-card { padding: 30px; background: #fff; border: 1px solid var(--line); border-radius: 22px; }
.feedback-card.warning { border-top: 4px solid var(--accent); }
.feedback-card h2 { margin: 7px 0 15px; font-size: 30px; }
.feedback-card ol { padding-left: 22px; color: var(--muted); }
.feedback-card li { margin: 8px 0; }
.search-page-form { margin-top: 28px; }
.search-results { display: grid; gap: 14px; }
.result-count { color: var(--muted); }
.search-results article { padding: 22px 0; border-bottom: 1px solid var(--line); }
.search-results h2 { margin: 0 0 6px; font-size: 26px; }
.search-results h2 a:hover { color: var(--primary); }
.search-results p { color: var(--muted); margin: 0 0 9px; }
.empty-state { text-align: center; padding: 26px; }
.empty-state img { width: min(100%, 430px); margin: 0 auto 24px; border-radius: 22px; }
.error-page { padding: 100px 0; min-height: 60vh; display: grid; align-items: center; }
.error-code { font-size: clamp(90px, 18vw, 170px); font-weight: 900; line-height: .8; color: #d9d4fa; letter-spacing: -.08em; }
.error-page h1 { font-size: clamp(38px, 6vw, 62px); }
.error-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.error-links a { padding: 10px 14px; border-radius: 11px; background: var(--soft); color: var(--primary); font-weight: 800; }
.site-footer { background: #1f1f2b; color: #d9d7e3; padding: 58px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr repeat(3, .7fr); gap: 40px; }
.brand-footer { color: #fff; margin-bottom: 14px; }
.footer-intro p { color: #aaa8b6; max-width: 390px; }
.site-footer h2 { color: #fff; font-size: 15px; margin: 0 0 14px; }
.site-footer a:not(.brand) { display: block; color: #bdbac8; margin: 8px 0; font-size: 14px; }
.site-footer a:hover { color: #fff; }
.footer-bottom { margin-top: 38px; padding-top: 20px; border-top: 1px solid #363543; display: flex; justify-content: space-between; gap: 20px; color: #8f8c9a; font-size: 13px; }
.back-top { position: fixed; right: 20px; bottom: 20px; width: 44px; height: 44px; border: 0; border-radius: 50%; background: var(--primary); color: #fff; box-shadow: 0 12px 28px rgba(111,90,232,.3); z-index: 90; }
.back-top[hidden] { display: none; }
body.modal-open { overflow: hidden; }
@media (max-width: 1100px) {
    .site-nav a { padding: 8px 9px; font-size: 14px; }
    .header-inner { gap: 12px; }
    .editorial-strip { grid-template-columns: 1fr 1fr; }
    .editorial-strip .button { grid-column: 1 / -1; justify-self: start; }
    .device-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 900px) {
    .header-inner { min-height: 68px; }
    .nav-toggle { display: inline-flex; margin-left: auto; }
    .site-nav { position: absolute; left: 20px; right: 20px; top: 72px; padding: 12px; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); display: none; flex-direction: column; align-items: stretch; }
    .site-nav.is-open { display: flex; }
    .site-nav a { padding: 10px 12px; }
    .search-open { display: none; }
    .hero-grid, .topic-split, .page-feature-grid, .guide-map, .two-column-content { grid-template-columns: 1fr; }
    .hero { padding-top: 58px; }
    .hero-media { max-width: 720px; }
    .split-head { grid-template-columns: 1fr; gap: 10px; }
    .feature-columns { grid-template-columns: 1fr; }
    .feature-column { display: grid; grid-template-columns: .8fr 1.2fr; }
    .feature-column img { height: 100%; aspect-ratio: auto; }
    .guide-grid { grid-template-columns: 1fr; }
    .faq-layout { grid-template-columns: 1fr; }
    .faq-side { position: static; }
    .footer-grid { grid-template-columns: 1.2fr 1fr 1fr; }
    .footer-intro { grid-column: 1 / -1; }
}
@media (max-width: 700px) {
    .container, .narrow { width: min(calc(100% - 28px), var(--max)); }
    .section { padding: 56px 0; }
    .hero h1, .page-hero h1 { font-size: clamp(36px, 12vw, 52px); }
    .hero-lead, .page-lead { font-size: 17px; }
    .hero-media { padding: 10px 0 52px; }
    .hero-status { right: 10px; left: 10px; min-width: 0; }
    .feature-column { display: block; }
    .feature-column img { aspect-ratio: 16/9; height: auto; }
    .plain-list div { grid-template-columns: 1fr; gap: 2px; }
    .route-list article { grid-template-columns: 48px 1fr; gap: 14px; }
    .editorial-strip, .inline-guide, .dual-panel, .scenario-grid, .compare-cards, .decision-grid, .privacy-grid, .warning-grid, .feedback-grid, .principles-grid { grid-template-columns: 1fr; }
    .guide-card { grid-template-columns: 1fr; }
    .guide-card img { height: 210px; }
    .about-slab { grid-template-columns: 1fr; padding: 16px; }
    .faq-preview-grid { grid-template-columns: 1fr; }
    .number-checks { grid-template-columns: 1fr; }
    .device-grid { grid-template-columns: 1fr; }
    .matrix-row { grid-template-columns: 1fr; padding: 10px 0; }
    .matrix-row span, .matrix-row span + span { border-left: 0; border-bottom: 1px solid var(--line); padding: 10px 14px; }
    .matrix-head { display: none; }
    .case-list article { grid-template-columns: 1fr; gap: 12px; }
    .timeline-list article, .diagnostic-list article, .safety-steps article { grid-template-columns: 44px 1fr; gap: 12px; }
    .search-input-row, .search-page-form > div { flex-direction: column; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px 18px; }
    .footer-intro { grid-column: 1 / -1; }
    .footer-bottom { flex-direction: column; }
}
@media (max-width: 430px) {
    .brand span { font-size: 15px; }
    .brand img { width: 38px; height: 38px; }
    .button-row { flex-direction: column; align-items: stretch; }
    .button { width: 100%; }
    .route-list article { grid-template-columns: 1fr; }
    .route-number { padding: 0; }
    .timeline-list article, .diagnostic-list article, .safety-steps article { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
}