:root {
  --brand: #6d5cff;
  --brand-dark: #4a3de0;
  --brand-soft: #eeecff;
  --accent: #22d3c5;
  --ink: #101225;
  --ink-2: #262a44;
  --muted: #676d85;
  --surface: #ffffff;
  --surface-soft: #f7f8fc;
  --line: #e8eaf3;
  --dark: #0b0d1f;
  --dark-2: #141730;
  --warning: #a35a00;
  --radius: 20px;
  --radius-sm: 12px;
  --shadow-sm: 0 4px 20px rgba(16, 18, 37, .06);
  --shadow-md: 0 16px 48px rgba(16, 18, 37, .10);
  --shadow-lg: 0 32px 80px rgba(16, 18, 37, .16);
  --shadow-brand: 0 16px 40px rgba(109, 92, 255, .32);
  --container: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.narrow, .article-container { width: min(calc(100% - 40px), 800px); margin-inline: auto; }

/* ============ Header ============ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .82);
  border-bottom: 1px solid rgba(232, 234, 243, .8);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
}
.nav-wrap { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand-icon {
  display: grid; place-items: center; flex: 0 0 34px;
  width: 34px; height: 34px; border-radius: 11px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  box-shadow: 0 6px 18px rgba(109, 92, 255, .38);
}
.brand-icon svg { width: 20px; height: 20px; }
.brand-text { display: flex; flex-direction: column; font-size: 19px; font-weight: 800; letter-spacing: -.02em; line-height: 1.15; }
.brand-text small { font-size: 11px; font-weight: 600; color: var(--muted); letter-spacing: .02em; }
.brand-footer .brand-text { color: #fff; font-size: 18px; }
.brand-footer { margin-bottom: 14px; }
.brand img { width: 36px; height: 36px; object-fit: contain; }
.main-nav { display: flex; align-items: center; gap: 30px; font-size: 15px; font-weight: 600; }
.main-nav > a:not(.button) { position: relative; color: var(--ink-2); transition: color .2s; }
.main-nav > a:not(.button):hover { color: var(--brand); }
.nav-toggle { display: none; border: 0; background: transparent; font-size: 24px; }

/* ============ Buttons ============ */
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 48px; padding: 0 26px;
  border: 1px solid transparent; border-radius: 12px;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: #fff; font-weight: 700; font-size: 15px;
  box-shadow: var(--shadow-brand);
  transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
  cursor: pointer;
}
.button:hover { transform: translateY(-2px); box-shadow: 0 20px 48px rgba(109, 92, 255, .40); filter: brightness(1.05); }
.button:active { transform: translateY(0); }
.button-small { min-height: 40px; padding-inline: 18px; border-radius: 10px; font-size: 14px; }
.button-block { width: 100%; }
.button-ghost { color: var(--brand); background: #fff; border-color: #ddd9ff; box-shadow: none; }
.button-ghost:hover { color: #fff; background: linear-gradient(135deg, var(--brand), var(--brand-dark)); box-shadow: var(--shadow-brand); }
.button-light { color: var(--brand-dark); background: #fff; box-shadow: 0 10px 30px rgba(0,0,0,.18); }
.button-outline-light { color: #fff; border-color: rgba(255,255,255,.4); background: rgba(255,255,255,.06); box-shadow: none; backdrop-filter: blur(8px); }
.button-outline-light:hover { background: rgba(255,255,255,.14); }
.text-link { color: var(--brand); font-weight: 700; }

/* ============ Dark Hero（高端深色首屏） ============ */
.hero, .page-hero, .product-hero, .article-header {
  position: relative; overflow: hidden;
  background:
    radial-gradient(ellipse 60% 50% at 85% 10%, rgba(109, 92, 255, .28), transparent 60%),
    radial-gradient(ellipse 50% 45% at 10% 90%, rgba(34, 211, 197, .16), transparent 60%),
    linear-gradient(160deg, var(--dark) 0%, var(--dark-2) 100%);
  color: #fff;
}
.hero::before, .page-hero::before, .product-hero::before, .article-header::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 40%, transparent 100%);
}
.hero .container, .page-hero .container, .product-hero .container, .article-header .container { position: relative; z-index: 2; }

.hero { padding: 110px 0 100px; }
.page-hero { padding: 96px 0 110px; }
.product-hero { padding: 84px 0 120px; }
.article-header { padding: 80px 0 100px; text-align: center; }

.hero .eyebrow, .page-hero .eyebrow, .product-hero .eyebrow, .article-header .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px; border-radius: 999px;
  color: #cfc9ff; font-size: 13px; font-weight: 700; letter-spacing: .08em;
  background: rgba(109, 92, 255, .14);
  border: 1px solid rgba(109, 92, 255, .35);
  backdrop-filter: blur(6px);
}
.hero .eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }

.hero h1, .page-hero h1, .product-hero h1, .article-header h1 {
  margin: 22px 0 20px; max-width: 880px;
  font-size: clamp(42px, 5.6vw, 70px);
  line-height: 1.08; letter-spacing: -.045em; font-weight: 800;
  overflow-wrap: break-word;
  background: linear-gradient(180deg, #fff 55%, #c9c4ff 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-lead, .page-hero p, .article-summary {
  max-width: 680px; color: rgba(235, 236, 248, .72);
  font-size: clamp(17px, 1.8vw, 20px); line-height: 1.8;
}
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 72px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.trust-inline { display: flex; flex-wrap: wrap; gap: 12px 22px; margin-top: 30px; color: rgba(235,236,248,.6); font-size: 13px; font-weight: 600; }
.trust-inline span { display: inline-flex; align-items: center; gap: 7px; }
.trust-inline span::before { content: "✓"; color: var(--accent); font-weight: 900; }

/* 深色 hero 内的面包屑 */
.page-hero .breadcrumb, .product-hero .breadcrumb, .article-header .breadcrumb { color: rgba(235,236,248,.55); }
.page-hero .breadcrumb a:hover, .product-hero .breadcrumb a:hover, .article-header .breadcrumb a:hover { color: #fff; }

/* Hero 视觉卡片（玻璃拟态） */
.hero-visual { position: relative; min-height: 460px; display: grid; place-items: center; }
.glow { position: absolute; width: 400px; height: 400px; border-radius: 50%; background: conic-gradient(from 180deg, rgba(109,92,255,.5), rgba(34,211,197,.35), rgba(109,92,255,.5)); filter: blur(60px); opacity: .6; }
.visual-card {
  position: relative; z-index: 2;
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 22px;
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .35);
  color: #fff;
}
.visual-card-main { width: min(100%, 430px); padding: 42px; }
.visual-card-main small { color: rgba(235,236,248,.6); font-weight: 600; }
.visual-card-main h2 { margin: 12px 0; font-size: 30px; line-height: 1.25; letter-spacing: -.02em; }
.visual-card-main p { color: rgba(235,236,248,.65); }
.status-dot { display: inline-block; width: 9px; height: 9px; margin-right: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 6px rgba(34,211,197,.15); }
.mini-progress { height: 8px; margin-top: 30px; overflow: hidden; background: rgba(255,255,255,.1); border-radius: 8px; }
.mini-progress i { display: block; width: 76%; height: 100%; border-radius: 8px; background: linear-gradient(90deg, var(--brand), var(--accent)); }
.visual-card-float { position: absolute; z-index: 3; padding: 16px 20px; color: rgba(235,236,248,.7); font-size: 13px; font-weight: 600; }
.visual-card-float strong { display: block; color: #fff; font-size: 28px; letter-spacing: -.02em; }
.visual-card-float.top { top: 34px; right: -8px; }
.visual-card-float.bottom { bottom: 42px; left: -6px; }

/* ============ Trust Strip ============ */
.trust-strip { background: var(--surface); border-bottom: 1px solid var(--line); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-grid > div { padding: 28px 26px; border-right: 1px solid var(--line); }
.trust-grid > div:last-child { border: 0; }
.trust-grid strong { display: block; font-size: 15px; }
.trust-grid span { display: block; margin-top: 3px; color: var(--muted); font-size: 13px; }

/* ============ Sections ============ */
.section { padding: 100px 0; }
.section-muted { background: var(--surface-soft); }
.section-heading { max-width: 720px; margin-bottom: 44px; }
.section-heading.split { max-width: none; display: flex; align-items: end; justify-content: space-between; gap: 24px; }
.section-heading .eyebrow { color: var(--brand); font-size: 13px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.section-heading h2, .cta-panel h2 { margin: 10px 0 12px; font-size: clamp(30px, 4vw, 46px); line-height: 1.16; letter-spacing: -.035em; font-weight: 800; }
.section-heading p { margin: 0; color: var(--muted); font-size: 17px; }

/* ============ 卡片：高端产品卡 ============ */
.card-grid { display: grid; gap: 26px; }
.product-grid { grid-template-columns: repeat(3, 1fr); }
.article-grid { grid-template-columns: repeat(3, 1fr); }

/* 卡片重叠 hero 效果 */
.products-overlap { margin-top: -76px; position: relative; z-index: 3; }

.product-card, .article-card {
  position: relative; overflow: hidden;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: #fff; box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.product-card:hover, .article-card:hover {
  transform: translateY(-7px);
  box-shadow: var(--shadow-lg);
  border-color: #cfc9ff;
}
.product-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
  opacity: 0; transition: opacity .25s ease;
}
.product-card:hover::before { opacity: 1; }
.product-card.featured { border-color: #bdb4ff; box-shadow: 0 12px 44px rgba(109, 92, 255, .14); }

.card-body { padding: 28px; }
.card-body h3 { margin: 16px 0 10px; font-size: 21px; line-height: 1.35; letter-spacing: -.01em; }
.card-body h3 a:hover { color: var(--brand); }
.card-body p { color: var(--muted); font-size: 15px; }

/* 产品首字母徽章（渐变） */
.product-badge {
  display: grid; place-items: center;
  width: 52px; height: 52px; border-radius: 14px;
  color: #fff; font-size: 22px; font-weight: 800; letter-spacing: -.02em;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  box-shadow: 0 10px 24px rgba(109, 92, 255, .30);
}
.card-grid > article:nth-child(2) .product-badge { background: linear-gradient(135deg, #ff7a59, #ffb86c); box-shadow: 0 10px 24px rgba(255, 122, 89, .28); }
.card-grid > article:nth-child(3) .product-badge { background: linear-gradient(135deg, #19c2a8, #4be3c9); box-shadow: 0 10px 24px rgba(25, 194, 168, .28); }
.card-grid > article:nth-child(4) .product-badge { background: linear-gradient(135deg, #f0509c, #ff8fc0); box-shadow: 0 10px 24px rgba(240, 80, 156, .28); }
.card-grid > article:nth-child(5) .product-badge { background: linear-gradient(135deg, #2f8cf0, #6cc3ff); box-shadow: 0 10px 24px rgba(47, 140, 240, .28); }
.card-grid > article:nth-child(6) .product-badge { background: linear-gradient(135deg, #8f5cf0, #c08fff); box-shadow: 0 10px 24px rgba(143, 92, 240, .28); }

.card-badge {
  position: absolute; z-index: 2; top: 18px; right: 18px;
  padding: 6px 13px; border-radius: 999px;
  color: #fff; background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  font-size: 12px; font-weight: 800; letter-spacing: .02em;
  box-shadow: 0 8px 20px rgba(109, 92, 255, .35);
}

.card-footer { display: flex; align-items: flex-end; justify-content: space-between; gap: 14px; margin-top: 24px; padding-top: 22px; border-top: 1px solid var(--line); }
.price-wrap small { display: block; color: var(--muted); font-size: 12px; margin-bottom: 2px; }
.price { color: var(--ink); font-size: 22px; font-weight: 800; letter-spacing: -.02em; }
.price.big { margin: 6px 0 2px; font-size: 40px; background: linear-gradient(135deg, var(--brand), var(--accent)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.check-list { display: grid; gap: 9px; padding: 0; margin: 18px 0 0; list-style: none; }
.check-list li { display: flex; align-items: flex-start; gap: 9px; color: var(--ink-2); font-size: 14.5px; }
.check-list li::before {
  content: "✓"; flex: 0 0 20px; display: grid; place-items: center;
  width: 20px; height: 20px; margin-top: 2px; border-radius: 50%;
  color: #fff; background: linear-gradient(135deg, var(--accent), #0ea592);
  font-size: 11px; font-weight: 900;
}

.meta, .article-meta { color: #82879c; font-size: 13px; }

/* 文章卡片 */
.product-card img, .article-card img, .article-placeholder { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.article-placeholder {
  display: grid; place-items: center;
  background:
    radial-gradient(circle at 75% 20%, rgba(34,211,197,.25), transparent 50%),
    linear-gradient(135deg, #171a38, #2a2f6b);
  color: #d9d6ff; font-weight: 800; font-size: 17px; letter-spacing: .04em;
}
.article-card .card-body { padding: 24px 26px; }
.article-card .text-link { font-size: 14px; }

/* 场景区块 */
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.scenario-grid article { padding: 36px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-sm); transition: transform .25s ease, box-shadow .25s ease; }
.scenario-grid article:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.scenario-grid b { display: inline-block; color: var(--brand); font-size: 13px; font-weight: 800; letter-spacing: .08em; }
.scenario-grid h3 { margin: 14px 0 10px; font-size: 21px; letter-spacing: -.02em; }
.scenario-grid p { margin: 0; color: var(--muted); font-size: 15px; }

/* CTA 大面板 */
.cta-panel {
  position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: space-between; gap: 40px;
  padding: 60px 64px; border-radius: 28px;
  color: #fff;
  background:
    radial-gradient(ellipse 50% 80% at 90% 10%, rgba(34,211,197,.35), transparent 55%),
    linear-gradient(120deg, #2a1e8f, var(--brand) 60%, #125e68);
  box-shadow: var(--shadow-lg);
}
.cta-panel::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 48px 48px; pointer-events: none; }
.cta-panel > * { position: relative; }
.cta-panel p { color: rgba(255,255,255,.78); margin: 0; }
.cta-panel .eyebrow.light { color: #d6d2ff; font-weight: 800; letter-spacing: .1em; font-size: 13px; }

/* ============ 产品详情 ============ */
.product-hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 70px; align-items: center; }
.purchase-card, .article-cta, .contact-card, .side-panel {
  padding: 32px; border-radius: var(--radius);
  background: #fff; border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
}
.product-hero .purchase-card {
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .16);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .35);
  color: #fff;
}
.product-hero .purchase-card small { color: rgba(235,236,248,.65); font-weight: 600; letter-spacing: .06em; }
.product-hero .purchase-card del { color: rgba(235,236,248,.5); }
.product-hero .purchase-card .fine-print { color: rgba(235,236,248,.6); font-size: 12px; }
.product-hero .purchase-card .button-ghost { color: #fff; background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.3); }
.product-hero .purchase-card .button-ghost:hover { background: rgba(255,255,255,.18); }
.product-hero .purchase-card .button + .button { margin-top: 12px; }
.product-hero .check-list li { color: rgba(235,236,248,.82); }

.content-layout { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: 60px; align-items: start; }
.side-panel { position: sticky; top: 100px; box-shadow: var(--shadow-sm); }
.side-panel h3 { margin-top: 0; }
.steps { display: grid; gap: 16px; padding: 0; list-style: none; }
.steps li { display: flex; gap: 13px; align-items: center; color: var(--ink-2); font-size: 15px; }
.steps b { display: grid; width: 28px; height: 28px; place-items: center; flex: 0 0 28px; border-radius: 50%; color: #fff; background: linear-gradient(135deg, var(--brand), var(--brand-dark)); font-size: 13px; }

/* ============ 文章详情 ============ */
.article-header .breadcrumb { justify-content: center; }
.article-header .eyebrow { margin-bottom: 6px; }
.article-summary { margin: 0 auto 22px; }
.article-header .article-meta { color: rgba(235,236,248,.55); }
.article-section { padding-top: 76px; margin-top: -60px; position: relative; z-index: 3; }
.article-layout { display: grid; grid-template-columns: minmax(0, 760px) 300px; justify-content: center; gap: 64px; align-items: start; }
.article-prose {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 48px 54px; box-shadow: var(--shadow-md);
}
.article-aside { position: sticky; top: 98px; display: grid; gap: 20px; }
.article-cta { box-shadow: var(--shadow-sm); }
.article-cta .eyebrow { color: var(--brand); font-size: 12px; font-weight: 800; letter-spacing: .1em; }
.article-cta h3, .contact-card h3 { margin: 8px 0; font-size: 21px; }
.article-cta p, .contact-card p { color: var(--muted); font-size: 14px; }
.contact-card { box-shadow: var(--shadow-sm); background: var(--surface-soft); }

/* 正文排版 */
.prose { color: #2b2e45; font-size: 17px; line-height: 1.9; }
.prose h2 { margin: 52px 0 18px; font-size: 30px; line-height: 1.3; letter-spacing: -.02em; font-weight: 800; }
.prose h3 { margin: 36px 0 14px; font-size: 23px; letter-spacing: -.01em; }
.prose p { margin: 0 0 22px; }
.prose a { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; }
.prose img { margin: 30px auto; border-radius: 14px; }
.prose blockquote, .notice { margin: 30px 0; padding: 22px 26px; border-left: 4px solid var(--brand); background: var(--brand-soft); border-radius: 0 14px 14px 0; }
.notice.warning { border-color: #f0a64b; background: #fff8ee; color: var(--warning); }
.prose pre { overflow: auto; padding: 24px; color: #e8eaff; background: #171a2c; border-radius: 14px; }
.prose table { width: 100%; border-collapse: collapse; margin: 28px 0; font-size: 15px; }
.prose th, .prose td { padding: 12px 14px; border: 1px solid var(--line); text-align: left; }
.prose th { background: var(--surface-soft); }
.sources { margin-top: 56px; padding-top: 26px; border-top: 1px solid var(--line); }
.sources h2 { font-size: 20px; }

.pagination { display: flex; justify-content: center; align-items: center; gap: 20px; margin-top: 52px; color: var(--muted); }
.pagination a { color: var(--brand); font-weight: 800; }

.empty-card { grid-column: 1 / -1; padding: 52px; border: 1px dashed #c9ccda; border-radius: var(--radius); text-align: center; color: var(--muted); background: #fff; }

/* ============ Footer ============ */
.site-footer { position: relative; padding: 76px 0 26px; color: #d9dbea; background: linear-gradient(180deg, #10132a, var(--dark)); }
.site-footer::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(109,92,255,.5), rgba(34,211,197,.5), transparent); }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 48px; }
.footer-grid h3 { color: #fff; font-size: 15px; }
.footer-grid a, .footer-grid p { display: block; margin: 8px 0; color: #a6abc5; font-size: 14px; transition: color .2s; }
.footer-grid a:hover { color: #fff; }
.footer-bottom { margin-top: 48px; padding-top: 24px; border-top: 1px solid #262a45; color: #838aa5; font-size: 13px; }

.floating-contact {
  position: fixed; z-index: 40; right: 24px; bottom: 24px;
  display: grid; width: 58px; height: 58px; place-items: center;
  border-radius: 50%; color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  box-shadow: 0 16px 40px rgba(109,92,255,.45);
  font-weight: 800; font-size: 14px;
  transition: transform .2s ease;
}
.floating-contact:hover { transform: translateY(-3px) scale(1.05); }

.mobile-action-bar { display: none; }
.error-page { min-height: 70vh; display: grid; place-items: center; padding: 50px 20px; text-align: center; }
.error-page h1 { font-size: clamp(36px, 6vw, 62px); margin: 8px 0; }

/* ============ 响应式 ============ */
@media (max-width: 960px) {
  .hero-grid, .product-hero-grid, .content-layout, .article-layout { grid-template-columns: 1fr; }
  .hero-visual { min-height: 400px; }
  .product-grid, .article-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-grid > div:nth-child(2) { border-right: 0; }
  .article-aside, .side-panel { position: static; }
  .article-aside { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .article-prose { padding: 36px 30px; }
}

@media (max-width: 720px) {
  .container, .narrow, .article-container { width: min(calc(100% - 28px), var(--container)); }
  .nav-toggle { display: block; }
  .main-nav { position: absolute; top: 71px; left: 0; right: 0; display: none; padding: 18px 20px 24px; flex-direction: column; align-items: stretch; gap: 8px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 14px 30px rgba(30,34,60,.08); }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 9px 0; }
  .hero { padding: 70px 0 64px; }
  .hero-grid { gap: 44px; }
  .hero h1, .page-hero h1, .product-hero h1, .article-header h1 { font-size: clamp(30px, 8.6vw, 40px); overflow-wrap: break-word; word-break: break-word; }
  .hero-actions .button { flex: 1 1 100%; }
  .hero-visual { min-height: 330px; }
  .visual-card-main { padding: 30px; }
  .visual-card-float.top { right: 0; }
  .visual-card-float.bottom { bottom: 6px; }
  .trust-grid, .product-grid, .article-grid, .scenario-grid, .article-aside, .footer-grid { grid-template-columns: 1fr; }
  .trust-grid > div { border-right: 0; border-bottom: 1px solid var(--line); }
  .section { padding: 68px 0; }
  .page-hero { padding: 64px 0 90px; }
  .product-hero { padding: 56px 0 110px; }
  .article-header { padding: 56px 0 90px; text-align: left; }
  .article-header .breadcrumb { justify-content: flex-start; }
  .section-heading.split, .cta-panel { align-items: flex-start; flex-direction: column; }
  .cta-panel { padding: 40px 28px; }
  .prose { font-size: 16px; }
  .prose h2 { font-size: 26px; }
  .article-prose { padding: 28px 20px; border-radius: 16px; }
  .products-overlap { margin-top: -56px; }
  .floating-contact { display: none; }
  .mobile-action-bar {
    position: fixed; z-index: 45; left: 0; right: 0; bottom: 0;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
    border-top: 1px solid var(--line);
    background: rgba(255,255,255,.96); backdrop-filter: blur(12px);
    box-shadow: 0 -12px 30px rgba(23,26,50,.1);
  }
  .mobile-action-bar span, .mobile-action-bar small, .mobile-action-bar strong { display: block; }
  .mobile-action-bar small { color: var(--muted); font-size: 11px; }
  .mobile-action-bar strong { color: var(--ink); font-size: 17px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}