:root {
    --primary: #6F5AE8;
    --primary-soft: #9A8CF2;
    --ink: #242433;
    --text: #30303A;
    --muted: #70707D;
    --bg: #F8F8FC;
    --surface: #FFFFFF;
    --surface-alt: #F0EEFA;
    --accent: #F29A4A;
    --border: #E4E1F2;
    --success: #447A66;
    --danger: #A34F4F;
    --shadow: 0 18px 44px rgba(36, 36, 51, .08);
    --shadow-soft: 0 8px 24px rgba(36, 36, 51, .055);
    --radius-xl: 30px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --radius-sm: 11px;
    --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    color: var(--text);
    background: var(--bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
body.modal-open,
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid rgba(111, 90, 232, .32); outline-offset: 3px; }
::selection { background: rgba(154, 140, 242, .28); }
.container { width: min(calc(100% - 40px), var(--container)); margin: 0 auto; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
.skip-link {
    position: fixed;
    left: 16px;
    top: 12px;
    z-index: 999;
    padding: 10px 14px;
    background: var(--ink);
    color: #fff;
    border-radius: 9px;
    transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(248, 248, 252, .93);
    border-bottom: 1px solid rgba(228, 225, 242, .9);
    backdrop-filter: blur(16px);
}
.header-inner {
    min-height: 76px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 24px;
    align-items: center;
}
.brand { display: inline-flex; align-items: center; gap: 11px; min-width: 0; }
.brand img { flex: 0 0 auto; border-radius: 12px; }
.brand-copy { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
.brand-copy strong { color: var(--ink); font-size: 17px; letter-spacing: -.02em; }
.brand-copy small { color: var(--muted); margin-top: 4px; font-size: 11px; white-space: nowrap; }
.primary-nav { display: flex; justify-content: center; align-items: center; gap: 5px; }
.primary-nav a {
    padding: 10px 11px;
    color: #565664;
    font-size: 14px;
    border-radius: 10px;
    transition: background .18s ease, color .18s ease;
}
.primary-nav a:hover,
.primary-nav a[aria-current="page"] { background: var(--surface-alt); color: var(--primary); }
.search-open,
.button,
.search-row button {
    border: 0;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    font-weight: 700;
    padding: 11px 16px;
    box-shadow: 0 8px 18px rgba(111, 90, 232, .18);
    transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.search-open:hover,
.button:hover,
.search-row button:hover { transform: translateY(-1px); box-shadow: 0 11px 22px rgba(111, 90, 232, .24); }
.button.secondary { background: var(--surface); color: var(--ink); border: 1px solid var(--border); box-shadow: none; }
.button.accent { background: var(--accent); color: #2f2419; box-shadow: 0 8px 18px rgba(242, 154, 74, .22); }
.button.small { padding: 9px 13px; font-size: 14px; }
.menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--border); background: #fff; border-radius: 12px; padding: 10px; }
.menu-toggle span:not(.sr-only) { display: block; height: 2px; background: var(--ink); margin: 4px 0; border-radius: 2px; }

.search-modal[hidden] { display: none !important; }
.search-modal { position: fixed; inset: 0; z-index: 500; display: grid; place-items: start center; padding: 11vh 20px 30px; }
.search-backdrop { position: absolute; inset: 0; background: rgba(25, 24, 38, .64); backdrop-filter: blur(5px); }
.search-dialog {
    position: relative;
    z-index: 1;
    width: min(680px, 100%);
    padding: 32px;
    background: var(--surface);
    border-radius: 24px;
    box-shadow: 0 30px 90px rgba(10, 10, 18, .28);
}
.search-close { position: absolute; right: 16px; top: 13px; border: 0; background: transparent; font-size: 30px; color: var(--muted); }
.search-form label { display: block; color: var(--ink); font-weight: 700; margin: 17px 0 8px; }
.search-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
.search-row input,
.form-field input,
.form-field textarea {
    width: 100%;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    border-radius: 12px;
    padding: 12px 14px;
    min-height: 48px;
}
.search-row input:focus,
.form-field input:focus,
.form-field textarea:focus { border-color: var(--primary-soft); outline: 3px solid rgba(111, 90, 232, .1); }
.muted { color: var(--muted); }

.hero { padding: 72px 0 48px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(380px, .95fr); gap: 52px; align-items: center; }
.hero-copy { max-width: 680px; }
.eyebrow {
    margin: 0 0 9px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
}
.hero h1,
.page-hero h1 {
    margin: 0;
    color: var(--ink);
    font-size: clamp(38px, 5vw, 66px);
    line-height: 1.08;
    letter-spacing: -.045em;
}
.hero .lead,
.page-hero .lead {
    margin: 23px 0 0;
    max-width: 760px;
    color: #575765;
    font-size: clamp(17px, 2vw, 20px);
    line-height: 1.8;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-note { margin-top: 20px; color: var(--muted); font-size: 14px; }
.hero-visual { position: relative; }
.hero-frame {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl);
    background: #e9e6fb;
    box-shadow: var(--shadow);
    border: 1px solid rgba(111, 90, 232, .12);
}
.hero-frame img { width: 100%; aspect-ratio: 5 / 4; object-fit: cover; }
.hero-floating {
    position: absolute;
    right: -18px;
    bottom: 24px;
    width: min(270px, 72%);
    background: rgba(255, 255, 255, .94);
    border: 1px solid rgba(228, 225, 242, .95);
    box-shadow: var(--shadow-soft);
    border-radius: 18px;
    padding: 16px 18px;
}
.hero-floating strong { display: block; color: var(--ink); margin-bottom: 4px; }
.hero-floating p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.6; }

.page-hero { padding: 50px 0 34px; }
.page-hero .hero-box {
    padding: 48px;
    background: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
}
.page-hero h1 { font-size: clamp(34px, 4.5vw, 56px); max-width: 900px; }
.page-hero .hero-box::after {
    content: "";
    position: absolute;
    right: -90px;
    bottom: -120px;
    width: 320px;
    height: 320px;
    border: 70px solid rgba(111, 90, 232, .08);
    border-radius: 50%;
}
.page-hero .hero-meta { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 24px; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 7px 10px; border-radius: 999px; background: #fff; border: 1px solid var(--border); color: #5b5b68; font-size: 13px; }

.breadcrumbs { padding-top: 22px; color: var(--muted); font-size: 13px; }
.breadcrumbs ol { list-style: none; padding: 0; margin: 0; display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: 8px; color: #aaa6ba; }
.breadcrumbs a:hover { color: var(--primary); }

.section { padding: 48px 0; }
.section.compact { padding: 32px 0; }
.section.alt { background: var(--surface-alt); border-top: 1px solid rgba(228, 225, 242, .78); border-bottom: 1px solid rgba(228, 225, 242, .78); }
.section-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, .7fr); gap: 40px; align-items: end; margin-bottom: 26px; }
.section-heading h2,
.article-body h2,
.related-panel h2,
.footer-group h2 {
    margin: 0;
    color: var(--ink);
    line-height: 1.22;
    letter-spacing: -.025em;
}
.section-heading h2 { font-size: clamp(28px, 3.4vw, 42px); }
.section-heading p { margin: 0; color: var(--muted); }
.section-heading.single { grid-template-columns: 1fr; max-width: 760px; }
.cards { display: grid; gap: 18px; }
.cards.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cards.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.info-card {
    min-width: 0;
    padding: 24px;
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: 0 1px 0 rgba(36, 36, 51, .02);
}
.info-card h3 { margin: 0; color: var(--ink); font-size: 19px; line-height: 1.45; }
.info-card p { margin: 11px 0 0; color: #666674; }
.info-card .text-link { margin-top: 16px; }
.text-link { display: inline-flex; color: var(--primary); font-weight: 750; font-size: 14px; }
.text-link:hover { text-decoration: underline; text-underline-offset: 4px; }

.media-split { display: grid; grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr); gap: 38px; align-items: center; }
.media-split.reverse { grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr); }
.media-card { overflow: hidden; border-radius: var(--radius-xl); border: 1px solid var(--border); background: #ebe8fa; box-shadow: var(--shadow-soft); }
.media-card img { width: 100%; aspect-ratio: 16 / 11; object-fit: cover; }
.copy-block h2 { margin: 0 0 14px; color: var(--ink); font-size: clamp(28px, 3.4vw, 40px); line-height: 1.25; letter-spacing: -.025em; }
.copy-block h3 { color: var(--ink); margin: 24px 0 8px; font-size: 20px; }
.copy-block p { color: #5f5f6d; margin: 0 0 13px; }
.copy-block ul { margin: 18px 0; padding-left: 21px; color: #555563; }
.copy-block li + li { margin-top: 8px; }

.topic-band {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 30px;
    align-items: center;
    padding: 30px 34px;
    border-radius: var(--radius-xl);
    background: var(--ink);
    color: #f7f6ff;
}
.topic-band h2 { margin: 0; font-size: clamp(26px, 3vw, 38px); line-height: 1.2; }
.topic-band p { margin: 10px 0 0; max-width: 760px; color: #cbc9dc; }
.topic-band .button.secondary { background: #fff; border: 0; }

.path-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: path; }
.path-card { position: relative; padding: 24px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--border); }
.path-card::before { counter-increment: path; content: "0" counter(path); display: inline-flex; margin-bottom: 20px; color: var(--primary); font-weight: 850; font-size: 13px; letter-spacing: .08em; }
.path-card h3 { color: var(--ink); margin: 0 0 8px; }
.path-card p { color: var(--muted); margin: 0; }

.step-list { display: grid; gap: 14px; }
.step-item { display: grid; grid-template-columns: 74px 1fr; gap: 22px; padding: 24px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); }
.step-number { width: 56px; height: 56px; display: grid; place-items: center; border-radius: 16px; background: var(--surface-alt); color: var(--primary); font-weight: 850; }
.step-item h2,
.step-item h3 { margin: 0 0 7px; color: var(--ink); }
.step-item p { margin: 0; color: var(--muted); }

.checklist { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.check-item { padding: 22px 22px 22px 58px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: #fff; position: relative; }
.check-item::before { content: "✓"; position: absolute; left: 21px; top: 22px; width: 25px; height: 25px; display: grid; place-items: center; border-radius: 50%; background: rgba(111, 90, 232, .12); color: var(--primary); font-weight: 900; }
.check-item h3 { margin: 0 0 6px; color: var(--ink); }
.check-item p { margin: 0; color: var(--muted); }

.notice { padding: 20px 22px; border-radius: var(--radius-md); background: #fff8f1; border: 1px solid #f3d7bd; color: #715238; }
.notice strong { color: #593d26; }
.notice.info { background: #f3f1ff; border-color: #dcd6ff; color: #55506d; }
.notice.success { background: #f1f8f5; border-color: #d1e4db; color: #456557; }

.guide-groups { display: grid; gap: 22px; }
.guide-group { display: grid; grid-template-columns: minmax(220px, .6fr) minmax(0, 1.4fr); gap: 34px; padding: 28px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); }
.guide-group h2 { margin: 0 0 8px; color: var(--ink); font-size: 25px; }
.guide-group p { margin: 0; color: var(--muted); }
.guide-group ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.guide-group a { display: flex; justify-content: space-between; gap: 18px; padding: 13px 14px; border-radius: 12px; background: var(--bg); color: #484858; }
.guide-group a::after { content: "→"; color: var(--primary); }
.guide-group a:hover { background: var(--surface-alt); color: var(--primary); }

.faq-list { display: grid; gap: 11px; }
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
.faq-question { width: 100%; border: 0; background: transparent; color: var(--ink); padding: 19px 52px 19px 20px; text-align: left; font-weight: 760; position: relative; }
.faq-question::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); color: var(--primary); font-size: 23px; font-weight: 400; }
.faq-question[aria-expanded="true"]::after { content: "−"; }
.faq-answer { padding: 0 20px 20px; color: #646471; }
.faq-answer p { margin: 0; }

.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 40px; align-items: start; }
.article-body { min-width: 0; }
.article-body .article-cover { margin: 0 0 32px; overflow: hidden; border-radius: var(--radius-xl); border: 1px solid var(--border); background: #ebe8f7; }
.article-body .article-cover img { width: 100%; aspect-ratio: 16 / 8.6; object-fit: cover; }
.article-body h2 { font-size: 28px; margin-top: 38px; }
.article-body h2:first-child { margin-top: 0; }
.article-body p { margin: 14px 0; color: #4f4f5c; font-size: 16px; }
.article-body ul, .article-body ol { color: #4f4f5c; padding-left: 24px; }
.article-sidebar { position: sticky; top: 100px; display: grid; gap: 16px; }
.sidebar-card { padding: 20px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); }
.sidebar-card h2, .sidebar-card h3 { margin: 0 0 10px; color: var(--ink); font-size: 18px; }
.sidebar-card p { color: var(--muted); margin: 0; font-size: 14px; }
.sidebar-card a { display: block; padding: 8px 0; color: #555563; border-bottom: 1px solid #efedf6; font-size: 14px; }
.sidebar-card a:last-child { border-bottom: 0; }
.sidebar-card a:hover { color: var(--primary); }

.content-list { display: grid; gap: 13px; }
.content-row { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; padding: 22px 24px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); }
.content-row h2, .content-row h3 { margin: 0 0 7px; color: var(--ink); font-size: 20px; }
.content-row p { margin: 0; color: var(--muted); }
.content-row .tag-list { margin-top: 11px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 7px; }
.tag { display: inline-flex; padding: 5px 8px; border-radius: 999px; background: var(--surface-alt); color: #686276; font-size: 12px; }

.related-panel { margin-top: 44px; padding: 28px; border-radius: var(--radius-xl); background: var(--surface-alt); display: grid; grid-template-columns: .75fr 1.25fr; gap: 30px; }
.related-panel ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 9px; }
.related-panel a { display: block; padding: 12px 13px; border-radius: 10px; background: #fff; color: #4f4b61; }
.related-panel a:hover { color: var(--primary); }

.problem-list { display: grid; gap: 18px; }
.problem-card { padding: 26px; border: 1px solid var(--border); background: #fff; border-radius: var(--radius-lg); }
.problem-card h2 { margin: 0 0 12px; color: var(--ink); font-size: 23px; }
.problem-card ol { margin: 0; padding-left: 22px; color: #565664; }
.problem-card li + li { margin-top: 5px; }
.problem-next { margin-top: 15px; padding-top: 14px; border-top: 1px solid var(--border); color: var(--primary); font-weight: 650; }

.form-card { max-width: 760px; padding: 28px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl); }
.form-field { margin-bottom: 17px; }
.form-field label { display: block; margin-bottom: 7px; color: var(--ink); font-weight: 700; }
.form-field textarea { min-height: 150px; resize: vertical; }
.form-note { color: var(--muted); font-size: 13px; }

.status-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
.status-card { padding: 22px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--border); }
.status-card strong { display: block; color: var(--ink); margin-bottom: 7px; }
.status-card p { margin: 0; color: var(--muted); }

.search-summary { padding: 24px; margin-bottom: 20px; background: var(--surface-alt); border-radius: var(--radius-lg); }
.search-summary h1 { margin: 0; color: var(--ink); font-size: clamp(28px, 4vw, 44px); }
.search-summary p { margin: 9px 0 0; color: var(--muted); }
.empty-state { padding: 42px; text-align: center; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl); }
.empty-state h2 { color: var(--ink); margin: 0 0 8px; }
.empty-state p { color: var(--muted); margin: 0 auto 18px; max-width: 620px; }

.site-footer { margin-top: 60px; background: var(--ink); color: #d7d5e2; }
.footer-main { display: grid; grid-template-columns: 1.3fr repeat(3, .7fr); gap: 40px; padding: 50px 0 36px; }
.footer-brand p { max-width: 430px; color: #aaa8b9; font-size: 14px; }
.footer-logo .brand-copy strong { color: #fff; }
.footer-logo .brand-copy small { color: #aaa8b9; }
.footer-group h2 { color: #fff; font-size: 14px; margin-bottom: 13px; }
.footer-group a { display: block; color: #aaa8b9; padding: 4px 0; font-size: 13px; }
.footer-group a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding: 17px 0 24px; border-top: 1px solid rgba(255,255,255,.08); color: #898796; font-size: 12px; }
.footer-bottom p { margin: 0; }
.footer-bottom div { display: flex; flex-wrap: wrap; gap: 14px; }
.footer-bottom a:hover { color: #fff; }
.back-top { position: fixed; right: 18px; bottom: 18px; z-index: 80; width: 44px; height: 44px; border: 1px solid var(--border); background: #fff; color: var(--ink); border-radius: 14px; box-shadow: var(--shadow-soft); opacity: 0; pointer-events: none; transform: translateY(10px); transition: .2s ease; }
.back-top.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0); }

[data-reveal] { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; }
[data-reveal].is-revealed { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
    [data-reveal] { opacity: 1; transform: none; }
}

@media (max-width: 1100px) {
    .header-inner { gap: 12px; }
    .primary-nav a { padding-inline: 8px; font-size: 13px; }
    .hero-grid { gap: 34px; grid-template-columns: minmax(0, 1fr) minmax(330px, .85fr); }
    .cards.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-main { grid-template-columns: 1.2fr repeat(3, .65fr); gap: 24px; }
}

@media (max-width: 900px) {
    .container { width: min(calc(100% - 32px), var(--container)); }
    .header-inner { grid-template-columns: auto 1fr auto auto; }
    .menu-toggle { display: block; grid-column: 4; }
    .search-open { grid-column: 3; grid-row: 1; padding: 9px 12px; }
    .primary-nav {
        position: fixed;
        top: 77px;
        left: 16px;
        right: 16px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        border: 1px solid var(--border);
        border-radius: 18px;
        background: #fff;
        box-shadow: var(--shadow);
    }
    .primary-nav.is-open { display: flex; }
    .primary-nav a { font-size: 15px; padding: 11px 12px; }
    .hero { padding-top: 48px; }
    .hero-grid { grid-template-columns: 1fr; }
    .hero-visual { max-width: 700px; }
    .section-heading { grid-template-columns: 1fr; gap: 12px; }
    .cards.three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .media-split,
    .media-split.reverse { grid-template-columns: 1fr; }
    .media-split.reverse .media-card { order: -1; }
    .path-grid { grid-template-columns: 1fr; }
    .guide-group { grid-template-columns: 1fr; gap: 18px; }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-main { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 700px) {
    .brand-copy small { display: none; }
    .search-open { font-size: 0; width: 42px; height: 42px; padding: 0; position: relative; background: #fff; border: 1px solid var(--border); box-shadow: none; }
    .search-open::before { content: "⌕"; font-size: 23px; color: var(--ink); position: absolute; inset: 0; display: grid; place-items: center; }
    .hero { padding: 38px 0 32px; }
    .hero h1, .page-hero h1 { letter-spacing: -.035em; }
    .hero-floating { position: static; width: auto; margin-top: 12px; }
    .page-hero .hero-box { padding: 32px 24px; }
    .section { padding: 38px 0; }
    .cards.two,
    .cards.three,
    .cards.four,
    .checklist,
    .status-grid { grid-template-columns: 1fr; }
    .topic-band { grid-template-columns: 1fr; padding: 26px; }
    .article-sidebar { grid-template-columns: 1fr; }
    .related-panel { grid-template-columns: 1fr; }
    .content-row { grid-template-columns: 1fr; }
    .step-item { grid-template-columns: 56px 1fr; padding: 20px; gap: 14px; }
    .step-number { width: 48px; height: 48px; border-radius: 13px; }
    .footer-main { grid-template-columns: 1fr; }
    .footer-brand { grid-column: auto; }
    .footer-bottom { flex-direction: column; }
    .search-dialog { padding: 25px 20px; }
    .search-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .container { width: min(calc(100% - 24px), var(--container)); }
    .header-inner { min-height: 68px; }
    .primary-nav { top: 69px; left: 12px; right: 12px; }
    .brand img { width: 38px; height: 38px; }
    .brand-copy strong { font-size: 15px; }
    .hero h1 { font-size: 38px; }
    .page-hero h1 { font-size: 34px; }
    .hero .lead, .page-hero .lead { font-size: 16px; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .button { text-align: center; }
    .info-card, .problem-card { padding: 20px; }
    .guide-group { padding: 22px; }
    .back-top { right: 12px; bottom: 12px; }
}