/* roulang page: index */
:root {
  --bg: #F5F8FB;
  --surface: #FFFFFF;
  --primary: #2A6FBD;
  --primary-hover: #1E568F;
  --accent: #147D78;
  --dark: #163A66;
  --footer: #1B3F6B;
  --title: #1A2433;
  --text: #3D4A59;
  --muted: #6B7785;
  --line: #E3EAF1;
  --success: #2F7D4A;
  --danger: #B42318;
  --shadow: 0 8px 24px rgba(26,54,93,.08);
  --shadow-hover: 0 14px 32px rgba(26,54,93,.12);
  --radius-card: 10px;
  --radius-btn: 6px;
  --container: 1220px;
  --space-xl: 96px;
  --space-lg: 64px;
  --space-md: 48px;
  --nav-h: 72px;
  --mono: "SFMono-Regular","Menlo","Consolas","Liberation Mono",monospace;
  --sans: "PingFang SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; max-width: 100%; overflow-x: hidden; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
}
img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }
button, input, select, textarea { font-family: inherit; font-size: 16px; }
button { cursor: pointer; border: 0; background: none; }
ul, ol, dl { margin: 0; padding: 0; }
h1, h2, h3, h4, p { margin: 0; }
h1, h2, h3 { color: var(--title); font-weight: 700; letter-spacing: 0; }
h1 { font-size: 40px; line-height: 1.28; }
h2 { font-size: 30px; line-height: 1.35; }
h3 { font-size: 21px; line-height: 1.4; }
.skip {
  position: absolute; left: -999px; top: 8px;
}
.skip:focus {
  left: 8px; z-index: 100; background: #fff; padding: 8px 12px; border-radius: 6px;
  outline: 2px solid var(--primary);
}
.container {
  width: min(100% - 40px, var(--container));
  margin: 0 auto;
}
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.site-header { background: #fff; }
.topbar {
  background: #EAF1F8;
  color: var(--text);
  font-size: 13px;
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 42px; gap: 16px;
}
.topbar-meta { display: flex; flex-wrap: wrap; gap: 18px; color: var(--muted); }
.topbar-meta a { color: var(--text); }
.topbar-meta a:hover { color: var(--primary); }
.topbar-meta span { display: inline-flex; align-items: center; gap: 6px; }
.nav-main {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 80;
}
.nav-main.is-stuck { box-shadow: var(--shadow); }
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: var(--nav-h); gap: 20px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  color: var(--title); font-weight: 800; font-size: 18px; white-space: nowrap;
}
.logo:hover { color: var(--primary); }
.logo-mark {
  width: 36px; height: 36px; flex: 0 0 36px;
  border-radius: 8px; background: var(--primary); display: grid; place-items: center;
}
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  position: relative;
  color: var(--text);
  padding: 10px 12px;
  min-height: 44px;
  display: inline-flex; align-items: center;
  font-size: 15px;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a.is-active { color: var(--primary); font-weight: 600; }
.nav-links a.is-active::after {
  content: "";
  position: absolute; left: 12px; right: 12px; bottom: 6px;
  height: 2px; background: var(--primary); border-radius: 2px;
}
.menu-toggle {
  display: none; width: 44px; height: 44px; border-radius: var(--radius-btn);
  border: 1px solid var(--line); align-items: center; justify-content: center; flex-direction: column; gap: 5px;
}
.menu-toggle span { width: 18px; height: 2px; background: var(--title); display: block; }
.drawer, .drawer-mask { display: none; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 0 18px; border-radius: var(--radius-btn);
  font-weight: 600; transition: .2s ease; border: 1px solid transparent;
}
.btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--primary); outline-offset: 2px;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); color: #fff; }
.btn-primary:active { transform: translateY(1px); }
.btn-ghost { background: #fff; color: var(--accent); border-color: var(--accent); }
.btn-ghost:hover { background: #147D7812; color: var(--accent); }
.btn[disabled] { opacity: .45; pointer-events: none; }
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: #147D7814; color: var(--accent); border-radius: 999px;
  padding: 4px 10px; font-size: 12px; font-weight: 600;
}
.section { padding: var(--space-xl) 0; position: relative; }
.section.alt { background: #fff; }
.section-head { max-width: 760px; margin-bottom: 36px; }
.section-head p { margin-top: 12px; color: var(--text); }
.kicker { color: var(--accent); font-size: 13px; font-weight: 700; letter-spacing: .08em; margin-bottom: 8px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-card);
  box-shadow: var(--shadow); transition: .22s ease;
}
.card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.hero {
  position: relative; min-height: 640px; overflow: hidden; color: var(--title);
  padding: 36px 0 0;
}
.hero-slides { position: absolute; inset: 0; }
.hero-slide {
  position: absolute; inset: 0; opacity: 0; transition: opacity .8s ease;
}
.hero-slide.is-on { opacity: 1; }
.hero-slide img { width: 100%; height: 100%; object-fit: cover; }
.hero-mask {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(245,248,251,.96) 0%, rgba(245,248,251,.88) 42%, rgba(245,248,251,.35) 70%, rgba(22,58,102,.18) 100%),
    repeating-linear-gradient(90deg, rgba(42,111,189,.05) 0 1px, transparent 1px 48px);
}
.hero-inner { position: relative; z-index: 2; padding-bottom: 28px; }
.status-bar {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px;
}
.status-bar span {
  background: #fff; border: 1px solid var(--line); border-radius: 6px;
  padding: 6px 10px; font-size: 12px; color: var(--muted);
  box-shadow: var(--shadow);
}
.status-bar strong { color: var(--accent); font-family: var(--mono); font-weight: 700; }
.hero-brand { font-size: 14px; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.hero h1 { max-width: 720px; }
.hero-lead {
  max-width: 680px; margin: 16px 0 28px; color: var(--text);
}
.icon-matrix {
  display: grid; grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px; max-width: 920px; margin-bottom: 28px;
}
.icon-item {
  background: rgba(255,255,255,.92); border: 1px solid var(--line);
  border-radius: 10px; padding: 14px 10px; text-align: center;
  box-shadow: var(--shadow); min-height: 96px;
}
.icon-item svg { width: 28px; height: 28px; margin: 0 auto 8px; display: block; }
.icon-item b { display: block; font-size: 13px; color: var(--title); font-weight: 700; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.hero-ctrl {
  position: absolute; z-index: 3; right: max(20px, calc((100% - var(--container)) / 2));
  bottom: 86px; display: flex; gap: 8px;
}
.hero-ctrl button {
  width: 44px; height: 44px; border-radius: 6px; background: #fff; border: 1px solid var(--line);
  color: var(--title); font-size: 18px;
}
.hero-ctrl button:hover { background: var(--primary); color: #fff; }
.hero-dots { display: flex; gap: 6px; align-items: center; }
.hero-dots button {
  width: 8px; height: 8px; border-radius: 50%; background: #c5d4e4; padding: 0; min-height: 0;
}
.hero-dots button.is-on { width: 22px; border-radius: 8px; background: var(--primary); }
.hero-bottom {
  position: relative; z-index: 2; background: #fff; border-top: 1px solid var(--line);
}
.hero-bottom-inner {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
}
.hero-kpi {
  padding: 16px 8px; display: flex; gap: 14px; align-items: center;
  border-right: 1px solid var(--line);
}
.hero-kpi:last-child { border-right: 0; }
.hero-kpi b { font-size: 22px; color: var(--primary); font-family: var(--mono); display: block; line-height: 1.2; }
.hero-kpi span { color: var(--muted); font-size: 13px; }
.pain-list { display: grid; gap: 28px; }
.pain-item {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 28px; align-items: center;
}
.pain-item.reverse { grid-template-columns: .95fr 1.05fr; }
.pain-item.reverse .pain-copy { order: 2; }
.pain-item.reverse .pain-pic { order: 1; }
.pain-no {
  font-family: var(--mono); color: var(--primary); font-size: 13px; font-weight: 700; margin-bottom: 8px;
}
.pain-pic { border-radius: var(--radius-card); overflow: hidden; box-shadow: var(--shadow); min-height: 220px; }
.pain-pic img { width: 100%; height: 260px; object-fit: cover; }
.pain-points { margin-top: 12px; color: var(--text); }
.pain-points li { list-style: none; padding-left: 16px; position: relative; margin: 6px 0; }
.pain-points li::before {
  content: ""; position: absolute; left: 0; top: 10px; width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
}
.intro-grid { display: grid; grid-template-columns: 5fr 7fr; gap: 40px; align-items: center; }
.intro-pic { border-radius: var(--radius-card); overflow: hidden; box-shadow: var(--shadow); }
.intro-pic img { width: 100%; height: 460px; object-fit: cover; }
.spec-table { margin-top: 20px; width: 100%; border-collapse: collapse; }
.spec-table th, .spec-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); font-size: 14px; }
.spec-table th { width: 38%; color: var(--muted); font-weight: 600; background: #F7FAFD; }
.check-list { margin-top: 16px; }
.check-list li { list-style: none; padding: 6px 0 6px 22px; position: relative; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.adv-grid {
  display: grid; grid-template-columns: 1.35fr 1fr 1fr; grid-template-rows: auto auto; gap: 16px;
}
.adv-card { padding: 22px; }
.adv-card.large { grid-row: 1 / span 2; background: linear-gradient(180deg, #fff 0%, #F3F8FC 100%); }
.adv-card h3 { margin-bottom: 10px; }
.adv-card p { font-size: 15px; }
.param-row { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; }
.param {
  background: #F3F7FB; border: 1px solid var(--line); border-radius: 6px;
  padding: 4px 8px; font-size: 12px; color: var(--muted); font-family: var(--mono);
}
.steps {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; counter-reset: step;
}
.step {
  background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 18px 14px;
  box-shadow: var(--shadow); position: relative;
}
.step h3 { font-size: 18px; margin: 8px 0 10px; }
.step ol { padding-left: 18px; color: var(--text); font-size: 14px; }
.step-index {
  width: 28px; height: 28px; border-radius: 6px; background: var(--primary); color: #fff;
  display: grid; place-items: center; font-family: var(--mono); font-size: 13px;
}
.prod-grid {
  display: grid; grid-template-columns: 1.25fr 1fr; grid-template-rows: auto auto; gap: 16px;
}
.prod-card { overflow: hidden; display: flex; flex-direction: column; }
.prod-card.large { grid-row: 1 / span 2; }
.prod-card img { width: 100%; height: 180px; object-fit: cover; }
.prod-card.large img { height: 280px; }
.prod-body { padding: 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.prod-meta { font-size: 13px; color: var(--muted); }
.cases { background: var(--dark); color: #E7EEF6; }
.cases h2, .cases .kicker { color: #fff; }
.cases .section-head p { color: #C9D7E6; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.case-card {
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px; padding: 22px; min-height: 100%;
}
.case-card h3 { color: #fff; font-size: 20px; margin-bottom: 12px; }
.case-dl { display: grid; gap: 10px; font-size: 14px; }
.case-dl div { border-top: 1px solid rgba(255,255,255,.1); padding-top: 10px; }
.case-dl dt { color: #9FB4CC; font-size: 12px; margin-bottom: 4px; }
.case-dl dd { margin: 0; color: #F4F8FC; }
.case-dl dd em { color: #7ED0C7; font-style: normal; font-family: var(--mono); }
.results { background: #EEF4FA; }
.result-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.result-item {
  background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 18px 14px;
  box-shadow: var(--shadow);
}
.result-item b { display: block; font-size: 26px; color: var(--primary); font-family: var(--mono); line-height: 1.15; }
.result-item span { display: block; margin-top: 6px; color: var(--muted); font-size: 13px; }
.story-list { display: grid; gap: 22px; }
.story {
  display: grid; grid-template-columns: 360px 1fr; gap: 28px; align-items: stretch;
  background: #fff; border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
  box-shadow: var(--shadow);
}
.story img { width: 100%; height: 100%; min-height: 240px; object-fit: cover; }
.story-body { padding: 28px 28px 28px 0; }
.quote-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.quote {
  padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow);
}
.quote p { font-size: 15px; }
.quote footer { margin-top: 14px; color: var(--muted); font-size: 13px; display: flex; flex-direction: column; gap: 2px; }
.quote footer b { color: var(--title); font-size: 14px; }
.audience-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.aud-card { padding: 18px; background: #fff; border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0; }
.tag {
  background: #E8F1FB; color: var(--primary); border-radius: 6px; padding: 2px 8px; font-size: 12px; font-weight: 600;
}
.aud-card li { list-style: none; font-size: 14px; padding: 4px 0 4px 14px; position: relative; }
.aud-card li::before { content: ""; width: 6px; height: 6px; background: var(--accent); border-radius: 50%; position: absolute; left: 0; top: 11px; }
.scene-grid {
  display: grid; grid-template-columns: 1.2fr .8fr .8fr; grid-template-rows: 220px 220px auto; gap: 14px;
}
.scene-card {
  position: relative; overflow: hidden; border-radius: 10px; min-height: 180px; color: #fff;
  box-shadow: var(--shadow);
}
.scene-card img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.scene-card .cap {
  position: relative; z-index: 1; height: 100%; padding: 20px;
  background: linear-gradient(180deg, rgba(22,58,102,.1), rgba(22,58,102,.78));
  display: flex; flex-direction: column; justify-content: flex-end;
}
.scene-card.tall { grid-row: 1 / span 2; }
.scene-card.wide { grid-column: 1 / -1; min-height: 180px; }
.scene-card h3 { color: #fff; }
.news-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 16px; }
.news-card { overflow: hidden; }
.news-card img { width: 100%; height: 160px; object-fit: cover; }
.news-card .body { padding: 16px 18px 20px; }
.news-card time { color: var(--muted); font-size: 12px; font-family: var(--mono); }
.news-more { margin-top: 18px; }
.metrics-wrap {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0; background: #fff;
  border: 1px solid var(--line); border-radius: 10px; overflow: hidden; box-shadow: var(--shadow);
}
.metrics-wrap dl { display: grid; grid-template-columns: 160px 1fr; gap: 0; margin: 0; border-bottom: 1px solid var(--line); }
.metrics-wrap dl:last-child { border-bottom: 0; }
.metrics-wrap dt, .metrics-wrap dd { padding: 18px 20px; margin: 0; }
.metrics-wrap dt { background: #F4F8FC; color: var(--title); font-weight: 700; border-right: 1px solid var(--line); }
.faq-list { background: #fff; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:last-child { border-bottom: 0; }
.faq-item button {
  width: 100%; text-align: left; padding: 18px 22px; min-height: 56px;
  display: flex; justify-content: space-between; gap: 16px; color: var(--title); font-weight: 700;
}
.faq-item.is-open button { color: var(--primary); }
.faq-item .faq-a { display: none; padding: 0 22px 22px; color: var(--text); }
.faq-item.is-open .faq-a { display: block; }
.faq-ico { color: var(--muted); font-family: var(--mono); }
.cta-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 40px; align-items: start; }
.promise { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 28px; box-shadow: var(--shadow); }
.promise li { list-style: none; padding: 10px 0 10px 28px; position: relative; border-bottom: 1px solid var(--line); }
.promise li:last-child { border-bottom: 0; }
.promise li::before { content: "▣"; position: absolute; left: 0; color: var(--accent); }
.form-card { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 28px; box-shadow: var(--shadow); }
.form-row { margin-bottom: 14px; }
.form-row label { display: block; margin-bottom: 6px; color: var(--title); font-weight: 600; font-size: 14px; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; height: 48px; border: 1px solid var(--line); border-radius: 6px;
  padding: 0 12px; background: #FCFDFE; color: var(--title);
}
.form-row textarea { height: 110px; padding: 12px; resize: vertical; }
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  border-color: var(--primary); background: #fff;
}
.form-row .err { color: var(--danger); font-size: 13px; margin-top: 6px; }
.form-success {
  background: #EAF7EE; border: 1px solid #B7DCC3; color: var(--success);
  padding: 16px 18px; border-radius: 8px;
}
.site-footer { background: var(--footer); color: #D5E2F0; padding: 56px 0 24px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 28px; }
.site-footer h3 { color: #fff; font-size: 16px; margin-bottom: 12px; }
.site-footer a { color: #D5E2F0; }
.site-footer a:hover { color: #fff; }
.foot-brand { font-size: 18px; font-weight: 800; color: #fff; margin-bottom: 10px; display: flex; gap: 8px; align-items: center; }
.site-footer ul { list-style: none; }
.site-footer li { margin: 8px 0; }
.foot-bottom {
  margin-top: 28px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.12);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; color: #B7C7D8;
}
@media (max-width: 1280px) {
  h1 { font-size: 36px; }
  .icon-matrix { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 1024px) {
  :root { --space-xl: 64px; }
  h1 { font-size: 34px; }
  h2 { font-size: 28px; }
  .nav-links { display: none; }
  .menu-toggle { display: inline-flex; }
  .drawer-mask {
    display: block; position: fixed; inset: 0; background: rgba(16,32,51,.4); z-index: 90;
    opacity: 0; pointer-events: none; transition: .2s ease;
  }
  .drawer {
    display: block; position: fixed; top: 0; right: 0; bottom: 0; width: min(86vw, 360px);
    background: #fff; z-index: 100; transform: translateX(100%); transition: .24s ease;
    padding: 24px 18px; box-shadow: var(--shadow-hover);
  }
  body.menu-open .drawer { transform: none; }
  body.menu-open .drawer-mask { opacity: 1; pointer-events: auto; }
  .drawer a {
    display: flex; align-items: center; min-height: 44px; padding: 10px 8px;
    border-bottom: 1px solid var(--line); color: var(--title); font-weight: 600;
  }
  .intro-grid, .pain-item, .pain-item.reverse, .story, .cta-grid { grid-template-columns: 1fr; }
  .pain-item.reverse .pain-copy, .pain-item.reverse .pain-pic { order: unset; }
  .story-body { padding: 22px; }
  .adv-grid, .prod-grid, .scene-grid, .news-grid, .quote-grid { grid-template-columns: 1fr 1fr; }
  .adv-card.large, .prod-card.large, .scene-card.tall, .scene-card.wide { grid-column: 1 / -1; grid-row: auto; }
  .steps, .result-row, .audience-grid, .case-grid, .foot-grid { grid-template-columns: 1fr 1fr; }
  .intro-pic img, .story img { height: 280px; }
}
@media (max-width: 768px) {
  :root { --space-xl: 48px; }
  .container { width: min(100% - 28px, var(--container)); }
  .topbar-meta .hide-sm { display: none; }
  h1 { font-size: 30px; }
  h2 { font-size: 26px; }
  .hero { min-height: 0; padding-top: 20px; }
  .hero-ctrl { position: static; justify-content: flex-start; margin: 8px 0 16px; }
  .hero-bottom-inner, .adv-grid, .prod-grid, .scene-grid, .news-grid, .quote-grid,
  .steps, .result-row, .audience-grid, .case-grid, .foot-grid, .metrics-wrap,
  .metrics-wrap dl { grid-template-columns: 1fr; }
  .hero-kpi { border-right: 0; border-bottom: 1px solid var(--line); }
  .icon-matrix { grid-template-columns: 1fr 1fr; }
  .metrics-wrap dt { border-right: 0; border-bottom: 1px solid var(--line); }
  .btn { width: auto; }
  .hero-actions .btn { min-width: 46%; }
}
@media (max-width: 520px) {
  h1 { font-size: 26px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .icon-item { min-height: 88px; }
  .topbar-inner { padding: 6px 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* roulang page: index */
:root {
      --bg: #F5F8FB;
      --surface: #FFFFFF;
      --primary: #2A6FBD;
      --primary-hover: #1E568F;
      --accent: #147D78;
      --dark: #163A66;
      --footer: #1B4F86;
      --title: #1A2433;
      --text: #3D4A59;
      --muted: #6B7785;
      --line: #E3EAF1;
      --success: #2F7D4A;
      --danger: #B42318;
      --shadow: 0 8px 24px rgba(26, 54, 93, .08);
      --shadow-hover: 0 14px 32px rgba(26, 54, 93, .12);
      --radius-card: 10px;
      --radius-btn: 6px;
      --container: 1240px;
      --header-offset: 108px;
      --space-section: 96px;
      --font: "PingFang SC", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
      --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: var(--font);
      font-size: 16px;
      line-height: 1.75;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--primary); text-decoration: none; }
    a:hover { color: var(--primary-hover); }
    button, input, select, textarea { font-family: inherit; font-size: 16px; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4 { color: var(--title); margin: 0; font-weight: 700; letter-spacing: 0; }
    h1 { font-size: 40px; line-height: 1.25; }
    h2 { font-size: 30px; line-height: 1.35; }
    h3 { font-size: 21px; line-height: 1.4; }
    p { margin: 0 0 1em; }
    ul, ol { margin: 0; padding: 0; }
    :focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
    .container { width: min(100% - 40px, var(--container)); margin: 0 auto; }
    .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
    .skip {
      position: absolute; left: -999px; top: 8px;
    }
    .skip:focus { left: 8px; background: #fff; padding: 8px 12px; z-index: 80; }

    .btn {
      display: inline-flex; align-items: center; justify-content: center;
      min-height: 48px; padding: 0 20px; border-radius: var(--radius-btn);
      font-weight: 600; letter-spacing: 0; transition: background .2s, color .2s, border-color .2s, box-shadow .2s, transform .2s, opacity .2s;
      white-space: nowrap;
    }
    .btn-primary { background: var(--primary); color: #fff; }
    .btn-primary:hover { background: var(--primary-hover); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow); }
    .btn-primary:active { transform: translateY(0); }
    .btn-ghost {
      background: transparent; color: var(--accent);
      border: 1px solid var(--accent);
    }
    .btn-ghost:hover { background: rgba(20,125,120,.08); color: var(--accent); }
    .btn[disabled], .btn.is-disabled { opacity: .45; pointer-events: none; }
    .badge {
      display: inline-flex; align-items: center; gap: 6px;
      height: 28px; padding: 0 10px; border-radius: 6px;
      background: rgba(20,125,120,.1); color: var(--accent);
      font-size: 12px; font-weight: 600;
    }
    .tag {
      display: inline-flex; align-items: center;
      padding: 4px 10px; border-radius: 6px; background: #EEF4FA;
      color: var(--primary); font-size: 12px; font-weight: 600; margin: 0 6px 6px 0;
    }

    .site-header {
      position: sticky; top: 0; z-index: 40;
      background: rgba(255,255,255,.96);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(10px);
    }
    .utility-bar {
      display: flex; align-items: center; justify-content: space-between;
      min-height: 40px; background: #EEF3F8; color: var(--muted); font-size: 13px;
    }
    .utility-left, .utility-right { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
    .utility-bar a { color: var(--text); }
    .utility-bar a:hover { color: var(--primary); }
    .utility-bar .btn { min-height: 32px; padding: 0 14px; font-size: 13px; }
    .main-bar { display: flex; align-items: center; justify-content: space-between; min-height: 68px; gap: 20px; }
    .logo {
      display: flex; align-items: center; gap: 10px; color: var(--title); font-weight: 700; font-size: 18px;
    }
    .logo:hover { color: var(--title); }
    .logo-mark {
      width: 36px; height: 36px; border-radius: 8px; background: var(--primary);
      display: grid; place-items: center; flex-shrink: 0;
    }
    .nav-list { display: flex; align-items: center; gap: 4px; list-style: none; }
    .nav-list a {
      position: relative; display: flex; align-items: center;
      min-height: 44px; padding: 0 12px; color: var(--text); font-size: 15px; font-weight: 500;
    }
    .nav-list a:hover { color: var(--primary); }
    .nav-list a.active { color: var(--primary); }
    .nav-list a.active::after {
      content: ""; position: absolute; left: 12px; right: 12px; bottom: 8px;
      height: 2px; background: var(--primary); border-radius: 2px;
    }
    .nav-toggle, .nav-phone { display: none; }
    .nav-toggle {
      width: 44px; height: 44px; border-radius: 6px; border: 1px solid var(--line);
      align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .nav-toggle span { width: 18px; height: 2px; background: var(--title); display: block; }
    .drawer-mask {
      display: none; position: fixed; inset: 0; background: rgba(26,36,51,.35); z-index: 45;
    }
    .site-header.is-stuck .utility-bar { display: none; }
    .site-header.is-stuck { box-shadow: var(--shadow); }

    .hero {
      position: relative;
      padding: 36px 0 28px;
      background:
        linear-gradient(180deg, rgba(245,248,251,.92), rgba(245,248,251,.96)),
        repeating-linear-gradient(90deg, rgba(42,111,189,.05) 0 1px, transparent 1px 72px),
        repeating-linear-gradient(0deg, rgba(20,125,120,.04) 0 1px, transparent 1px 72px);
      overflow: hidden;
    }
    .hero::after {
      content: ""; position: absolute; right: -80px; top: 40px; width: 340px; height: 340px;
      border-radius: 50%; border: 1px dashed rgba(42,111,189,.18); pointer-events: none;
    }
    .hero-status {
      display: flex; flex-wrap: wrap; gap: 10px 18px;
      padding: 10px 14px; margin-bottom: 28px;
      background: #fff; border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow);
    }
    .hero-status span { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }
    .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(20,125,120,.12); }
    .hero-kicker { color: var(--primary); font-weight: 700; font-size: 14px; margin-bottom: 10px; }
    .hero-lead { max-width: 760px; font-size: 16px; color: var(--text); margin: 16px 0 22px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
    .icon-matrix {
      display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; margin-bottom: 28px;
    }
    .icon-card {
      background: var(--surface); border: 1px solid var(--line); border-radius: 10px;
      padding: 16px 14px; min-height: 148px; box-shadow: var(--shadow);
      transition: transform .2s, box-shadow .2s;
    }
    .icon-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
    .icon-card svg { width: 28px; height: 28px; margin-bottom: 10px; color: var(--primary); }
    .icon-card h3 { font-size: 16px; margin-bottom: 6px; }
    .icon-card p { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.6; }
    .kpi-strip {
      display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px;
    }
    .kpi-item {
      background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 16px 14px;
    }
    .kpi-item strong { display: block; font-size: 28px; line-height: 1.2; color: var(--dark); font-family: var(--mono); }
    .kpi-item em { font-style: normal; color: var(--accent); font-size: 14px; margin-left: 4px; }
    .kpi-item span { display: block; margin-top: 6px; color: var(--muted); font-size: 13px; }

    main section { scroll-margin-top: var(--header-offset); }
    .section { padding: var(--space-section) 0; }
    .section-alt { background: #fff; }
    .section-head { max-width: 760px; margin-bottom: 36px; }
    .section-head p { color: var(--text); margin-top: 12px; }
    .eyebrow { display: inline-block; color: var(--accent); font-size: 13px; font-weight: 700; margin-bottom: 8px; }

    .pain-wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: 36px; align-items: start; }
    .pain-list { list-style: none; display: grid; gap: 14px; }
    .pain-item {
      display: grid; grid-template-columns: 48px 1fr; gap: 14px;
      background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px;
      box-shadow: var(--shadow);
    }
    .pain-item:nth-child(even) { margin-left: 28px; }
    .pain-no {
      width: 48px; height: 48px; border-radius: 8px; background: #EAF2FA;
      display: grid; place-items: center; color: var(--primary); font-family: var(--mono); font-weight: 700;
    }
    .pain-item h3 { font-size: 18px; margin-bottom: 4px; }
    .pain-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .pain-visual { display: grid; gap: 14px; }
    .photo {
      border-radius: 10px; overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow);
    }
    .photo img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 16/10; }

    .intro-grid { display: grid; grid-template-columns: 5fr 7fr; gap: 40px; align-items: center; }
    .spec-list { list-style: none; display: grid; gap: 10px; margin-top: 18px; }
    .spec-list li {
      display: grid; grid-template-columns: 120px 1fr; gap: 12px;
      padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 14px;
    }
    .spec-list strong { color: var(--primary); font-weight: 700; }

    .bento {
      display: grid; grid-template-columns: 1.35fr 1fr 1fr; grid-template-rows: auto auto; gap: 16px;
    }
    .adv-card {
      background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 22px;
      box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s;
    }
    .adv-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
    .adv-card.large { grid-row: span 2; background: linear-gradient(180deg, #fff 0%, #F3F8FC 100%); }
    .adv-card .params { margin-top: 12px; display: grid; gap: 8px; }
    .adv-card .params span {
      display: flex; justify-content: space-between; gap: 12px;
      background: #F5F8FB; border-radius: 6px; padding: 8px 10px; font-size: 13px;
    }
    .adv-card p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
    .mark { width: 36px; height: 36px; border-radius: 8px; display: grid; place-items: center; margin-bottom: 12px; }
    .mark-a { background: #E7F1FB; color: var(--primary); }
    .mark-b { background: #E6F4F3; color: var(--accent); }
    .mark-c { background: #EDF0F4; color: var(--dark); }

    .stepper { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; position: relative; }
    .step {
      background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 18px 16px;
      box-shadow: var(--shadow); position: relative;
    }
    .step ol { margin: 12px 0 0 18px; color: var(--muted); font-size: 13px; }
    .step-index { font-family: var(--mono); color: var(--primary); font-size: 12px; font-weight: 700; }

    .product-grid {
      display: grid; grid-template-columns: 1.25fr 1fr; grid-template-rows: auto auto; gap: 16px;
    }
    .product-card {
      background: #fff; border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
      box-shadow: var(--shadow); display: flex; flex-direction: column;
      transition: transform .2s, box-shadow .2s;
    }
    .product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
    .product-card.featured { grid-row: span 2; }
    .product-card img { width: 100%; object-fit: cover; }
    .product-card.featured img { aspect-ratio: 16/11; min-height: 240px; }
    .product-card:not(.featured) { display: grid; grid-template-columns: 160px 1fr; }
    .product-card:not(.featured) img { height: 100%; aspect-ratio: auto; min-height: 160px; }
    .product-body { padding: 18px 18px 20px; }
    .product-body p { color: var(--muted); font-size: 14px; margin: 8px 0 12px; }
    .meta-line { font-size: 13px; color: var(--text); margin-bottom: 8px; }
    .meta-line b { color: var(--title); }

    .cases {
      background: var(--dark) url("/assets/images/a244af75a33a239b.webp") center/cover no-repeat;
      color: #E7EEF6; position: relative;
    }
    .cases::before {
      content: ""; position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(22,58,102,.94), rgba(22,58,102,.88) 55%, rgba(22,58,102,.78));
    }
    .cases .container { position: relative; z-index: 1; }
    .cases h2, .cases h3 { color: #fff; }
    .cases .section-head p { color: #D5E0EC; }
    .case-grid { display: grid; grid-template-columns: 1.15fr .85fr .85fr; gap: 16px; }
    .case-card {
      background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
      border-radius: 10px; padding: 22px; min-height: 100%;
    }
    .case-card p { color: #D7E3EF; font-size: 14px; }
    .case-label { font-size: 12px; color: #9AD0CC; font-weight: 700; letter-spacing: .04em; }
    .case-result { margin-top: 14px; padding-top: 12px; border-top: 1px solid rgba(255,255,255,.12); color: #fff; font-weight: 700; }

    .stat-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
    .stat-card {
      background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 22px 18px;
      box-shadow: var(--shadow);
    }
    .stat-card strong { display: block; font-size: 32px; font-family: var(--mono); color: var(--primary); line-height: 1.1; }
    .stat-card b { font-size: 14px; color: var(--accent); font-weight: 600; margin-left: 4px; }
    .stat-card p { margin: 8px 0 0; color: var(--muted); font-size: 13px; }

    .story-stack { display: grid; gap: 20px; }
    .story-card {
      display: grid; grid-template-columns: 280px 1fr; gap: 28px; align-items: center;
      background: #fff; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; box-shadow: var(--shadow);
    }
    .story-card:nth-child(even) { grid-template-columns: 1fr 280px; }
    .story-card:nth-child(even) .story-photo { order: 2; }
    .story-photo img { width: 100%; height: 100%; min-height: 220px; object-fit: cover; aspect-ratio: 4/3; }
    .story-body { padding: 24px 24px 24px 0; }
    .story-card:nth-child(even) .story-body { padding: 24px 0 24px 24px; }
    .story-body p { color: var(--text); }

    .quote-grid { display: grid; grid-template-columns: 1.2fr .9fr .9fr; gap: 16px; }
    .quote-card {
      background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 22px;
      box-shadow: var(--shadow);
    }
    .quote-card:first-child { background: #F3F8FC; }
    .quote-card blockquote { margin: 0 0 16px; color: var(--text); font-size: 15px; }
    .quote-card cite { font-style: normal; color: var(--muted); font-size: 13px; display: block; }
    .quote-card cite strong { color: var(--title); display: block; font-size: 14px; }

    .audience-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .audience-card {
      background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 20px;
      box-shadow: var(--shadow);
    }
    .audience-card ul { margin: 10px 0 0 18px; color: var(--muted); font-size: 14px; }

    .scene-grid {
      display: grid; grid-template-columns: 1.2fr .8fr; grid-template-rows: auto auto auto; gap: 16px;
    }
    .scene-card {
      position: relative; border-radius: 10px; overflow: hidden; min-height: 220px;
      box-shadow: var(--shadow); color: #fff;
    }
    .scene-card img { width: 100%; height: 100%; object-fit: cover; min-height: 220px; }
    .scene-card figcaption {
      position: absolute; left: 0; right: 0; bottom: 0; padding: 18px 18px 16px;
      background: linear-gradient(180deg, transparent, rgba(22,58,102,.88));
    }
    .scene-card p { margin: 6px 0 0; color: #D9E6F2; font-size: 14px; }
    .scene-card.wide { grid-column: 1 / -1; min-height: 260px; }
    .scene-card.wide img { min-height: 260px; aspect-ratio: 21/7; }
    .scene-card:nth-child(2) { margin-top: 28px; }
    .scene-card:nth-child(3) { margin-top: -28px; }

    .news-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 18px; }
    .news-feature, .news-item {
      background: #fff; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; box-shadow: var(--shadow);
    }
    .news-feature img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
    .news-feature div, .news-item { padding: 18px; }
    .news-item { display: grid; grid-template-columns: 120px 1fr; gap: 14px; padding: 12px; margin-bottom: 12px; }
    .news-item:last-child { margin-bottom: 0; }
    .news-item img { width: 120px; height: 86px; object-fit: cover; border-radius: 8px; }
    .news-item h3, .news-feature h3 { font-size: 18px; margin-bottom: 6px; }
    .news-item p, .news-feature p { margin: 0; color: var(--muted); font-size: 14px; }
    .news-more { margin-top: 16px; display: inline-flex; }

    .metric-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 10px; overflow: hidden; box-shadow: var(--shadow); }
    .metric-table th, .metric-table td { text-align: left; padding: 16px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
    .metric-table th { width: 22%; color: var(--primary); font-size: 15px; background: #F3F8FC; }
    .metric-table td { color: var(--text); font-size: 14px; }
    .metric-table tr:last-child th, .metric-table tr:last-child td { border-bottom: 0; }
    .guarantee {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 20px;
    }
    .guarantee div {
      background: #fff; border: 1px dashed var(--line); border-radius: 10px; padding: 14px;
      font-size: 14px; color: var(--text);
    }
    .guarantee strong { display: block; color: var(--title); margin-bottom: 4px; }

    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); background: #fff; }
    .faq-q {
      width: 100%; text-align: left; min-height: 56px; padding: 16px 8px;
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
      color: var(--title); font-weight: 700; font-size: 16px;
    }
    .faq-item.is-open .faq-q { color: var(--primary); }
    .faq-q i {
      width: 28px; height: 28px; border-radius: 6px; border: 1px solid var(--line);
      display: grid; place-items: center; color: var(--primary); flex-shrink: 0; font-style: normal;
    }
    .faq-a { display: none; padding: 4px 8px 22px; color: var(--text); max-width: 900px; }
    .faq-item.is-open .faq-a { display: block; }

    .cta-box {
      display: grid; grid-template-columns: .9fr 1.1fr; gap: 40px; align-items: start;
      background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 36px;
      box-shadow: var(--shadow);
    }
    .promise li { list-style: none; padding: 12px 0; border-bottom: 1px solid var(--line); }
    .promise li:last-child { border-bottom: 0; }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { font-size: 13px; color: var(--title); font-weight: 600; }
    .field input, .field select, .field textarea {
      min-height: 48px; border: 1px solid var(--line); border-radius: 6px;
      padding: 10px 12px; background: #FCFDFE; color: var(--title);
      transition: border-color .2s, box-shadow .2s;
    }
    .field textarea { min-height: 110px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus {
      outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(42,111,189,.12);
    }
    .field.has-error input, .field.has-error select, .field.has-error textarea { border-color: var(--danger); }
    .error { display: none; color: var(--danger); font-size: 12px; }
    .field.has-error .error { display: block; }
    .form-success {
      display: none; background: #F1F8F3; border: 1px solid #C6E2CF; color: var(--success);
      border-radius: 10px; padding: 24px;
    }
    .form-success.is-show { display: block; }
    #assess-form.is-hide { display: none; }

    .site-footer { background: var(--footer); color: #D7E4F2; padding: 56px 0 24px; }
    .footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 28px; }
    .site-footer h3 { color: #fff; font-size: 16px; margin-bottom: 12px; }
    .site-footer a { color: #D7E4F2; }
    .site-footer a:hover { color: #fff; }
    .footer-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; margin-bottom: 12px; }
    .foot-links { list-style: none; display: grid; gap: 8px; }
    .footer-bottom {
      margin-top: 28px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.12);
      display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; color: #B9C9DB;
    }

    @media (max-width: 1280px) {
      h1 { font-size: 36px; }
      .icon-matrix { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 1024px) {
      :root { --space-section: 64px; --header-offset: 72px; }
      h1 { font-size: 34px; }
      h2 { font-size: 28px; }
      .utility-left span:nth-child(2) { display: none; }
      .nav-list a { padding: 0 8px; font-size: 14px; }
      .icon-matrix, .kpi-strip, .stat-row, .guarantee { grid-template-columns: repeat(3, 1fr); }
      .pain-wrap, .intro-grid, .cta-box, .news-layout { grid-template-columns: 1fr; }
      .bento { grid-template-columns: 1fr 1fr; }
      .adv-card.large { grid-row: auto; grid-column: 1 / -1; }
      .stepper { grid-template-columns: repeat(3, 1fr); }
      .product-grid { grid-template-columns: 1fr; }
      .product-card.featured { grid-row: auto; }
      .product-card:not(.featured) { grid-template-columns: 200px 1fr; }
      .case-grid, .quote-grid, .audience-grid, .footer-grid { grid-template-columns: 1fr 1fr; }
      .scene-grid { grid-template-columns: 1fr 1fr; }
      .scene-card:nth-child(2), .scene-card:nth-child(3) { margin-top: 0; }
      .story-card, .story-card:nth-child(even) { grid-template-columns: 240px 1fr; }
      .story-card:nth-child(even) .story-photo { order: 0; }
      .story-body, .story-card:nth-child(even) .story-body { padding: 20px; }
    }
    @media (max-width: 768px) {
      :root { --space-section: 48px; }
      .container { width: min(100% - 28px, var(--container)); }
      h1 { font-size: 30px; }
      .utility-left { display: none; }
      .nav-list { display: none; }
      .nav-toggle, .nav-phone { display: inline-flex; }
      .nav-phone {
        min-height: 40px; padding: 0 12px; border-radius: 6px; background: var(--primary); color: #fff; font-weight: 600;
      }
      .nav-phone:hover { color: #fff; background: var(--primary-hover); }
      body.nav-open { overflow: hidden; }
      body.nav-open .drawer-mask { display: block; }
      body.nav-open .nav-list {
        display: flex; flex-direction: column; align-items: stretch;
        position: fixed; top: 0; right: 0; width: min(86vw, 360px); height: 100vh;
        background: #fff; z-index: 50; padding: 72px 18px 24px; gap: 0;
        box-shadow: var(--shadow-hover);
      }
      .nav-list a { min-height: 48px; border-bottom: 1px solid var(--line); }
      .hero-status { gap: 8px; }
      .icon-matrix, .kpi-strip, .stat-row, .guarantee, .audience-grid, .footer-grid { grid-template-columns: 1fr 1fr; }
      .pain-item:nth-child(even) { margin-left: 0; }
      .stepper { grid-template-columns: 1fr; border-left: 2px solid var(--line); margin-left: 12px; padding-left: 14px; }
      .product-card:not(.featured), .news-item, .quote-grid, .case-grid, .scene-grid { grid-template-columns: 1fr; }
      .product-card:not(.featured) img, .news-item img { width: 100%; height: 180px; }
      .story-card, .story-card:nth-child(even) { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .cta-box { padding: 22px; }
      .metric-table th, .metric-table td { display: block; width: 100%; }
      .metric-table th { border-bottom: 0; padding-bottom: 4px; }
      .footer-bottom { flex-direction: column; }
    }
    @media (max-width: 520px) {
      h1 { font-size: 28px; }
      h2 { font-size: 24px; }
      .icon-matrix, .kpi-strip, .stat-row, .bento, .guarantee, .audience-grid, .footer-grid { grid-template-columns: 1fr; }
      .utility-bar .btn { min-width: 44px; }
      .kpi-item strong, .stat-card strong { font-size: 26px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { transition: none !important; animation: none !important; }
      .icon-card:hover, .adv-card:hover, .product-card:hover, .btn-primary:hover { transform: none; }
    }