:root {
  --brand: #0b6bcb;
  --brand-dark: #084f99;
  --brand-soft: #eaf4ff;
  --ink: #102033;
  --muted: #5d6b7d;
  --line: #dce6f0;
  --surface: #fff;
  --canvas: #f5f8fc;
  --success: #147a48;
  --warning-bg: #fff9e8;
  --warning-line: #f2d98a;
  --warning-text: #6b5315;
  --shadow: 0 12px 38px rgba(35, 73, 111, .1);
  --radius-lg: 22px;
  --radius-md: 14px;
  --focus: 0 0 0 4px rgba(11, 107, 203, .18);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  font: 16px/1.68 Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
body, button, input, select, textarea { font-family: inherit; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--brand); }
button, input, select, textarea { font-size: 1rem; }
button, a { touch-action: manipulation; }
img { max-width: 100%; height: auto; }
ul, ol { margin: 0; }
[hidden] { display: none !important; }
:focus-visible { outline: 0; box-shadow: var(--focus); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
.site-container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 1000; padding: 12px 18px; border-radius: 10px; color: #fff; background: var(--brand-dark); }
.skip-link:focus { top: 16px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 100; border-bottom: 1px solid rgba(220, 230, 240, .9); background: rgba(255, 255, 255, .94); backdrop-filter: blur(14px); }
.nav-shell { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-brand { display: inline-flex; align-items: center; gap: 11px; min-height: 48px; color: var(--ink); }
.site-brand:hover { color: var(--ink); }
.brand-mark { width: 38px; height: 38px; display: grid; place-items: center; flex: 0 0 auto; color: #fff; background: var(--brand); border-radius: 11px; box-shadow: 0 7px 18px rgba(11, 107, 203, .25); }
.brand-mark svg { width: 23px; height: 23px; }
.brand-copy strong, .brand-copy small { display: block; }
.brand-copy strong { font-weight: 820; letter-spacing: -.02em; }
.brand-copy small { color: var(--muted); font-size: 12px; font-weight: 650; letter-spacing: .04em; }
.site-navigation, .site-navigation ul { display: flex; align-items: center; gap: 4px; padding: 0; list-style: none; }
.site-navigation a { min-height: 44px; display: inline-flex; align-items: center; padding: 0 13px; border-radius: 10px; color: #32455d; font-size: 15px; font-weight: 680; transition: color .2s ease, background .2s ease; }
.site-navigation a:hover, .site-navigation a.on { color: var(--brand); background: var(--brand-soft); }
.site-navigation li { position: relative; }
.site-navigation li ul { position: absolute; top: calc(100% + 8px); left: 0; min-width: 180px; display: none; padding: 8px; border: 1px solid var(--line); border-radius: 12px; background: #fff; box-shadow: var(--shadow); }
.site-navigation li:hover > ul, .site-navigation li:focus-within > ul { display: grid; }
.zblog-nav:empty { display: none; }
.nav-toggle { width: 48px; height: 48px; display: none; place-items: center; padding: 0; border: 1px solid var(--line); border-radius: 12px; color: var(--ink); background: #fff; cursor: pointer; }
.nav-toggle svg { width: 23px; height: 23px; }

/* Hero */
.hero { position: relative; overflow: hidden; padding: 72px 0 52px; background: radial-gradient(circle at 85% 10%, rgba(76, 167, 255, .18), transparent 30%), linear-gradient(180deg, #fff 0%, var(--canvas) 100%); }
.hero::before { content: ""; position: absolute; width: 420px; height: 420px; left: -260px; bottom: -260px; border: 1px solid rgba(11, 107, 203, .12); border-radius: 50%; }
.hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(300px, .75fr); align-items: center; gap: 56px; }
.eyebrow { width: fit-content; display: inline-flex; align-items: center; gap: 9px; padding: 6px 11px; border: 1px solid #cfe5fb; border-radius: 999px; color: var(--brand-dark); background: #f2f8ff; font-size: 14px; font-weight: 760; }
.eyebrow-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 4px rgba(20, 122, 72, .1); }
.hero h1 { max-width: 760px; margin: 20px 0 18px; font-size: clamp(36px, 5vw, 64px); line-height: 1.12; letter-spacing: -.045em; }
.hero-copy { max-width: 700px; margin: 0; color: var(--muted); font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; padding: 0 20px; border: 1px solid transparent; border-radius: 12px; font-weight: 760; cursor: pointer; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: var(--brand); box-shadow: 0 10px 22px rgba(11, 107, 203, .24); }
.button-primary:hover { color: #fff; background: var(--brand-dark); }
.button-secondary { color: var(--brand-dark); border-color: #c9dced; background: #fff; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 26px; color: #476078; font-size: 14px; font-weight: 680; }
.hero-trust span { display: inline-flex; align-items: center; gap: 7px; }
.hero-trust svg { width: 17px; height: 17px; color: var(--brand); }
.preview-card { position: relative; min-height: 346px; padding: 24px; border: 1px solid rgba(180, 207, 232, .8); border-radius: 28px; background: rgba(255, 255, 255, .88); box-shadow: 0 24px 70px rgba(32, 89, 142, .16); }
.preview-card::after { content: ""; position: absolute; inset: 12px; z-index: -1; border-radius: 24px; background: linear-gradient(135deg, rgba(11, 107, 203, .18), transparent 65%); transform: rotate(4deg); }
.preview-top { display: flex; justify-content: space-between; align-items: center; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.preview-top strong { font-size: 15px; }
.live-badge, .status { display: inline-flex; align-items: center; gap: 7px; color: var(--success); font-size: 13px; font-weight: 760; }
.live-badge::before, .status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.message-bubble { margin-top: 22px; padding: 17px 18px; border-radius: 16px 16px 16px 5px; color: #25405b; background: var(--brand-soft); }
.message-bubble small { display: block; margin-bottom: 5px; color: var(--brand-dark); font-weight: 760; }
.otp { display: block; margin-top: 8px; color: var(--ink); font-size: 26px; font-weight: 850; letter-spacing: .16em; font-variant-numeric: tabular-nums; }
.privacy-note { display: flex; gap: 12px; margin-top: 20px; padding: 15px; border: 1px solid var(--warning-line); border-radius: 14px; color: var(--warning-text); background: var(--warning-bg); font-size: 14px; }
.privacy-note svg { flex: 0 0 auto; width: 21px; height: 21px; margin-top: 2px; }

/* Main utility sections */
section { scroll-margin-top: 88px; }
.numbers-section, .benefits, .articles-section { padding: 72px 0 82px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 32px; margin-bottom: 28px; }
.section-heading h2, .faq-intro h2 { margin: 0 0 8px; font-size: clamp(27px, 3vw, 38px); line-height: 1.2; letter-spacing: -.03em; }
.section-heading p, .faq-intro p { max-width: 720px; margin: 0; color: var(--muted); }
.update-time { flex: 0 0 auto; color: var(--muted); font-size: 14px; }
.filter-panel { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 14px; margin-bottom: 22px; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface); box-shadow: 0 5px 18px rgba(45, 82, 117, .05); }
.field { position: relative; }
.field label { position: absolute; left: -9999px; }
.field svg { position: absolute; left: 16px; top: 50%; width: 20px; height: 20px; color: #607388; transform: translateY(-50%); pointer-events: none; }
.field input, .field select { width: 100%; min-height: 50px; border: 1px solid #cfdbe7; border-radius: 11px; color: var(--ink); background: #fbfdff; }
.field input { padding: 0 16px 0 48px; }
.field select { padding: 0 42px 0 16px; cursor: pointer; }
.field input:focus, .field select:focus { outline: 0; border-color: var(--brand); box-shadow: var(--focus); }
.country-chips { display: flex; gap: 9px; overflow-x: auto; padding: 2px 2px 16px; scrollbar-width: thin; }
.chip { flex: 0 0 auto; min-height: 44px; padding: 0 15px; border: 1px solid var(--line); border-radius: 999px; color: #334b64; background: var(--surface); font-weight: 720; cursor: pointer; transition: color .2s ease, border-color .2s ease, background .2s ease; }
.chip:hover, .chip[aria-pressed="true"] { color: #fff; border-color: var(--brand); background: var(--brand); }
.number-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.number-card { display: flex; flex-direction: column; min-height: 238px; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); box-shadow: 0 8px 25px rgba(31, 70, 107, .06); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.number-card:hover { transform: translateY(-4px); border-color: #bdd8f1; box-shadow: var(--shadow); }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.country { display: flex; align-items: center; gap: 11px; font-weight: 800; }
.country-code { width: 38px; height: 30px; display: grid; place-items: center; border-radius: 8px; color: var(--brand-dark); background: var(--brand-soft); font-size: 12px; letter-spacing: .08em; }
.phone { margin: 24px 0 5px; color: var(--ink); font-size: 22px; font-weight: 850; letter-spacing: .015em; font-variant-numeric: tabular-nums; }
.meta { margin: 0 0 20px; color: var(--muted); font-size: 14px; }
.card-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: auto; }
.card-button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid #cbd9e6; border-radius: 11px; color: #29445f; background: #fff; font-weight: 760; cursor: pointer; transition: color .2s ease, border-color .2s ease, background .2s ease; }
.card-button svg { width: 18px; height: 18px; }
.card-button:hover { color: var(--brand-dark); border-color: #9ec4e7; background: var(--brand-soft); }
.card-button.primary { color: #fff; border-color: var(--brand); background: var(--brand); }
.card-button.primary:hover { color: #fff; background: var(--brand-dark); }
.empty-state { padding: 36px; border: 1px dashed #b9c9d8; border-radius: var(--radius-md); color: var(--muted); text-align: center; background: #fff; }
.info-band { padding: 76px 0; color: #fff; background: #0e2742; }
.info-band .section-heading p { color: #c1d0df; }
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.step { padding: 24px; border: 1px solid rgba(186, 213, 238, .18); border-radius: 18px; background: rgba(255, 255, 255, .055); }
.step > span { display: block; margin-bottom: 28px; color: #68b9ff; font-size: 14px; font-weight: 850; letter-spacing: .1em; }
.step h3 { margin: 0 0 8px; font-size: 19px; }
.step p { margin: 0; color: #b9c9d8; font-size: 15px; }
.benefit-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.benefit { padding: 25px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.benefit-icon { width: 46px; height: 46px; display: grid; place-items: center; margin-bottom: 20px; border-radius: 12px; color: var(--brand); background: var(--brand-soft); }
.benefit-icon svg { width: 23px; height: 23px; }
.benefit h3 { margin: 0 0 8px; font-size: 19px; }
.benefit p { margin: 0; color: var(--muted); font-size: 15px; }
.safe-use { padding: 0 0 82px; }
.safe-panel { display: grid; grid-template-columns: .8fr 1.2fr; gap: 42px; padding: 36px; border: 1px solid var(--warning-line); border-radius: 24px; background: var(--warning-bg); }
.safe-panel h2 { margin: 0; font-size: clamp(26px, 3vw, 36px); line-height: 1.25; }
.safe-panel ul { padding-left: 22px; color: var(--warning-text); }
.safe-panel li + li { margin-top: 10px; }
.faq-section { padding: 78px 0; background: #fff; }
.faq-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 64px; align-items: start; }
.faq-intro { position: sticky; top: 104px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 16px 4px; font-weight: 800; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; width: 30px; height: 30px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 50%; color: var(--brand); background: var(--brand-soft); font-size: 22px; font-weight: 500; transition: transform .2s ease; }
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details p { margin: -2px 44px 22px 4px; color: var(--muted); }

/* Article cards */
.articles-section { background: var(--canvas); }
.article-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.post-card { position: relative; min-width: 0; display: flex; flex-direction: column; padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: #fff; box-shadow: 0 8px 25px rgba(31, 70, 107, .05); }
.post-card-featured { border-color: #a9ceeE; background: linear-gradient(145deg, #fff, #f1f8ff); }
.featured-label { width: fit-content; margin-bottom: 12px; padding: 4px 9px; border-radius: 999px; color: var(--brand-dark); background: var(--brand-soft); font-size: 12px; font-weight: 760; }
.post-card-meta, .article-meta { display: flex; flex-wrap: wrap; gap: 8px 14px; color: var(--muted); font-size: 13px; }
.post-card-title { margin: 14px 0 10px; font-size: 21px; line-height: 1.38; }
.post-card-title a:hover { color: var(--brand); }
.post-card-intro { max-height: 8.2em; overflow: hidden; color: var(--muted); font-size: 15px; }
.post-card-intro img { display: none; }
.post-card-intro p { margin: 0; }
.post-card-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto; padding-top: 20px; color: var(--muted); font-size: 14px; }
.post-card-footer a, .text-link { color: var(--brand-dark); font-weight: 760; }
.pagebar { margin-top: 30px; text-align: center; }
.pagebar .page, .pagebar a { min-width: 42px; min-height: 42px; display: inline-flex; align-items: center; justify-content: center; margin: 4px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.pagebar .now-page { color: #fff; border-color: var(--brand); background: var(--brand); }

/* Single, page, search */
.inner-main { min-height: 65dvh; padding: 54px 0 80px; }
.inner-layout { display: grid; grid-template-columns: minmax(0, 1fr) 336px; gap: 32px; align-items: start; }
.content-column { min-width: 0; }
.article-shell, .comments-shell, .search-result, .sidebar-column .function, .reading-card { border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: 0 8px 28px rgba(31, 70, 107, .06); }
.article-shell { padding: clamp(24px, 4vw, 52px); }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 30px; color: var(--muted); font-size: 14px; }
.breadcrumb a { color: var(--brand-dark); }
.breadcrumb span[aria-current="page"] { max-width: 32em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.article-header { padding-bottom: 30px; border-bottom: 1px solid var(--line); }
.article-category { min-height: 34px; display: inline-flex; align-items: center; padding: 0 12px; border-radius: 999px; color: var(--brand-dark); background: var(--brand-soft); font-size: 13px; font-weight: 760; }
.article-category:hover { color: #fff; background: var(--brand); }
.article-header h1 { max-width: 820px; margin: 16px 0 20px; font-size: clamp(34px, 4.4vw, 52px); line-height: 1.2; letter-spacing: -.04em; }
.article-header .article-meta { gap: 8px 0; font-size: 14px; }
.article-header .article-meta > * { display: inline-flex; align-items: center; }
.article-header .article-meta > *:not(:last-child)::after { content: ""; width: 4px; height: 4px; margin: 0 12px; border-radius: 50%; background: #b2bdcc; }
.post-body { padding-top: 24px; color: #24374c; font-size: 17px; line-height: 1.85; overflow-wrap: anywhere; }
.post-body > :first-child { margin-top: 0; }
.post-body > :last-child { margin-bottom: 0; }
.post-body h2 { margin: 2em 0 .7em; font-size: 1.65em; line-height: 1.35; }
.post-body h3 { margin: 1.7em 0 .65em; font-size: 1.3em; }
.post-body p { margin: 1em 0; }
.post-body ul, .post-body ol { padding-left: 1.5em; }
.post-body a { color: var(--brand-dark); text-decoration: underline; text-underline-offset: 3px; }
.post-body blockquote { margin: 1.5em 0; padding: 18px 22px; border-left: 4px solid var(--brand); border-radius: 0 12px 12px 0; color: #36506b; background: var(--brand-soft); }
.post-body pre, .post-body code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.post-body pre { overflow-x: auto; padding: 20px; border-radius: 14px; color: #eaf4ff; background: #0e2742; }
.post-body :not(pre) > code { padding: .15em .4em; border-radius: 5px; color: #75410d; background: #fff2d8; }
.post-body table { width: 100%; border-collapse: collapse; display: block; overflow-x: auto; }
.post-body th, .post-body td { padding: 10px 12px; border: 1px solid var(--line); text-align: left; }
.post-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 34px; padding-top: 22px; border-top: 1px solid var(--line); }
.post-tags a { padding: 5px 10px; border-radius: 999px; color: var(--brand-dark); background: var(--brand-soft); font-size: 14px; }
.sidebar-column { display: grid; gap: 16px; }
.sidebar-column .function { padding: 20px; }
.sidebar-column .function_t { margin: 0 0 12px; font-size: 17px; font-weight: 800; }
.sidebar-column .function_c, .sidebar-column .function ul { padding: 0; list-style: none; }
.sidebar-column .function li { padding: 8px 0; border-bottom: 1px solid #edf2f6; }
.sidebar-column input[type="text"], .sidebar-column input[type="search"] { width: 100%; min-height: 44px; padding: 0 12px; border: 1px solid var(--line); border-radius: 10px; }
.reading-sidebar { align-self: stretch; }
.reading-sidebar-stack { position: sticky; top: 116px; display: grid; gap: 16px; }
.reading-card { min-width: 0; padding: 24px; }
.reading-card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.reading-card-header.compact { margin-bottom: 14px; }
.reading-card-header h2, .reading-cta h2 { margin: 2px 0 0; font-size: 19px; line-height: 1.35; }
.reading-card-header.compact h2 { margin: 0; }
.reading-card-eyebrow { display: block; color: var(--brand); font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.reading-card-icon { width: 40px; height: 40px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 12px; color: var(--brand); background: var(--brand-soft); }
.reading-card-icon svg { width: 21px; height: 21px; }
.related-article-list, .reading-category-list ul, .reading-tag-cloud ul { margin: 0; padding: 0; list-style: none; }
.related-article-list li + li { border-top: 1px solid #edf1f7; }
.related-article-list a { min-height: 74px; display: grid; align-content: center; gap: 7px; padding: 13px 2px; border-radius: 10px; }
.related-article-list a:hover .related-article-title { color: var(--brand); }
.related-article-title { color: #202938; font-size: 15px; font-weight: 720; line-height: 1.48; transition: color .2s ease; }
.related-article-meta { display: flex; flex-wrap: wrap; gap: 4px 10px; color: var(--muted); font-size: 12px; }
.reading-tag-cloud, .reading-tag-cloud ul { display: flex; flex-wrap: wrap; gap: 8px; }
.reading-tag-cloud li { display: contents; }
.reading-tag-cloud a { min-height: 36px; display: inline-flex; align-items: center; padding: 0 12px; border: 1px solid #dce5f5; border-radius: 999px; color: #4c5e75; background: #f7f9fd; font-size: 13px; text-decoration: none; transition: color .2s ease, border-color .2s ease, background .2s ease; }
.reading-tag-cloud a:hover { color: var(--brand-dark); border-color: #b9caff; background: var(--brand-soft); }
.reading-category-list ul { display: grid; gap: 2px; }
.reading-category-list li { border-bottom: 1px solid #edf1f7; }
.reading-category-list li:last-child { border-bottom: 0; }
.reading-category-list a { min-height: 44px; display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 6px 2px; color: #34445a; font-size: 14px; }
.reading-category-list a:hover { color: var(--brand); }
.reading-cta { overflow: hidden; color: #fff; border-color: transparent; background: linear-gradient(145deg, var(--brand-dark), var(--brand)); box-shadow: 0 18px 38px rgba(57, 115, 246, .22); }
.reading-cta .reading-card-eyebrow { color: #cddaff; }
.reading-cta h2 { margin-top: 7px; font-size: 22px; }
.reading-cta p { margin: 11px 0 18px; color: #e4ebff; font-size: 14px; line-height: 1.65; }
.reading-cta-button { min-height: 46px; display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 0 15px; border-radius: 12px; color: var(--brand-dark); background: #fff; font-size: 14px; font-weight: 780; }
.reading-cta-button:hover { color: var(--brand); background: #f5f8ff; }
.reading-safety-link { min-height: 38px; display: inline-flex; align-items: center; margin-top: 9px; color: #eef3ff; font-size: 13px; text-decoration: underline; text-underline-offset: 3px; }
.reading-safety-link:hover { color: #fff; }
.archive-header { margin-bottom: 30px; }
.archive-header h1 { margin: 14px 0 6px; font-size: clamp(32px, 5vw, 48px); }
.archive-header p { margin: 0; color: var(--muted); }
.search-results { display: grid; gap: 16px; }
.search-result { padding: 28px; }
.search-result h2 { margin: 12px 0 10px; font-size: 25px; }
.search-result-intro { max-height: 8em; overflow: hidden; color: var(--muted); }
.search-result-intro img { display: none; }
.search-result .text-link { display: inline-block; margin-top: 14px; }

/* Comments */
.comments-shell { margin-top: 24px; padding: clamp(22px, 3vw, 34px); }
.comments-title { margin: 0 0 20px; font-size: 24px; }
.comments-title span { color: var(--muted); font-size: 16px; }
.comment { margin-top: 16px; padding: 20px; border: 1px solid var(--line); border-radius: 14px; background: #fbfdff; }
.comment .comment { margin-left: 34px; background: #fff; }
.comment-header { display: flex; align-items: center; gap: 12px; }
.avatar { width: 44px; height: 44px; flex: 0 0 auto; border-radius: 50%; object-fit: cover; }
.comment-header strong, .comment-header time { display: block; }
.comment-header time { color: var(--muted); font-size: 13px; }
.comment-reply { margin-left: auto; color: var(--brand-dark); font-size: 14px; font-weight: 720; }
.comment-body { margin-top: 14px; color: #334b64; }
.comment-form { margin-top: 32px; }
.comment-form-title { display: flex; align-items: center; justify-content: space-between; }
.comment-form-title h2 { font-size: 24px; }
.comment-fields { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.comment-form label { display: grid; gap: 7px; color: #344a61; font-size: 14px; font-weight: 680; }
.comment-form label span { color: #b42318; }
.comment-form input, .comment-form textarea { width: 100%; min-height: 46px; padding: 10px 12px; border: 1px solid #cbd9e6; border-radius: 10px; color: var(--ink); background: #fff; }
.comment-form textarea { min-height: 150px; resize: vertical; }
.comment-form input:focus, .comment-form textarea:focus { outline: 0; border-color: var(--brand); box-shadow: var(--focus); }
.comment-content-label { margin: 16px 0; }
.reply-frm { padding: 16px !important; border: 1px solid #9ec4e7; border-radius: 14px; background: var(--brand-soft); }

/* Footer */
.site-footer { padding: 48px 0 28px; color: #b9c7d5; background: #081a2d; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 48px; padding-bottom: 38px; }
.footer-brand { color: #fff; }
.footer-brand:hover { color: #fff; }
.footer-copy { max-width: 430px; margin: 16px 0 0; font-size: 14px; }
.site-footer h2 { margin: 0 0 12px; color: #fff; font-size: 14px; letter-spacing: .08em; text-transform: uppercase; }
.site-footer ul { display: grid; gap: 6px; padding: 0; list-style: none; }
.site-footer li, .site-footer a { color: #b9c7d5; font-size: 14px; }
.site-footer a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; padding-top: 24px; border-top: 1px solid rgba(220, 230, 240, .14); font-size: 13px; }
.toast { position: fixed; left: 50%; bottom: 24px; z-index: 300; min-width: 240px; padding: 13px 18px; border-radius: 12px; color: #fff; background: #102d47; box-shadow: var(--shadow); text-align: center; opacity: 0; pointer-events: none; transform: translate(-50%, 14px); transition: opacity .2s ease, transform .2s ease; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 1040px) {
  .site-navigation .primary-nav { display: none; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .preview-card { min-height: auto; }
  .number-grid, .article-grid, .benefit-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .inner-layout { grid-template-columns: 1fr; }
  .sidebar-column { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .reading-sidebar-stack { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .reading-cta { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .site-container { width: min(100% - 28px, 1180px); }
  .site-header { position: relative; }
  .nav-shell { min-height: 66px; }
  .nav-toggle { display: grid; }
  .site-navigation { position: absolute; top: calc(100% + 1px); left: 14px; right: 14px; display: none; padding: 14px; border: 1px solid var(--line); border-radius: 14px; background: #fff; box-shadow: var(--shadow); }
  .site-navigation.open { display: block; }
  .site-navigation .primary-nav, .site-navigation .zblog-nav { display: grid; gap: 4px; }
  .site-navigation a { width: 100%; }
  .site-navigation li ul { position: static; box-shadow: none; }
  .hero { padding: 48px 0 40px; }
  .hero h1 { font-size: clamp(34px, 11vw, 48px); }
  .hero-copy { font-size: 16px; }
  .hero-actions .button { width: 100%; }
  .section-heading { display: block; }
  .update-time { display: block; margin-top: 10px; }
  .filter-panel { grid-template-columns: 1fr; }
  .number-grid, .article-grid, .benefit-grid, .steps, .footer-grid, .sidebar-column, .comment-fields { grid-template-columns: 1fr; }
  .reading-sidebar-stack { grid-template-columns: 1fr; }
  .number-card { min-height: 222px; }
  .numbers-section, .benefits, .articles-section, .faq-section, .info-band { padding: 60px 0; }
  .safe-use { padding-bottom: 60px; }
  .safe-panel, .faq-layout { grid-template-columns: 1fr; gap: 24px; }
  .safe-panel { padding: 26px 22px; }
  .faq-intro { position: static; }
  .inner-main { padding: 32px 0 60px; }
  .article-shell { padding: 24px 20px; }
  .breadcrumb span[aria-current="page"] { max-width: 16em; }
  .article-header .article-meta { display: grid; gap: 4px; }
  .article-header .article-meta > *:not(:last-child)::after { display: none; }
  .post-body { font-size: 16px; }
  .comment .comment { margin-left: 12px; }
  .footer-grid { gap: 30px; }
  .footer-bottom { display: block; }
  .footer-bottom span { display: block; margin-top: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}