:root {
  --primary: rgb(70,139,223);
  --primary-soft: rgba(70,139,223,.12);
  --primary-weak: rgba(70,139,223,.07);
  --ink: #132033;
  --muted: #66758a;
  --line: #dfe9f6;
  --paper: #ffffff;
  --blue-paper: #f4f9ff;
  --deep: #0d2744;
  --shadow: 0 22px 60px rgba(28, 73, 130, .10);
  --radius: 22px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #f8fbff 0%, #ffffff 36%, #f5f9ff 100%);
  line-height: 1.75;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(70,139,223,.12);
}
.header-inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand, .footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--deep);
}
.brand-logo { width: 38px; height: 38px; border-radius: 12px; }
.brand-text { white-space: nowrap; }
.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
  font-size: 14px;
}
.site-nav a {
  padding: 8px 11px;
  color: #4f6177;
  border-radius: 999px;
}
.site-nav a.active, .site-nav a:hover {
  color: var(--primary);
  background: var(--primary-soft);
}

.container, .section, .page-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}
.section { padding: 72px 0; }
.section-kicker, .page-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.section-kicker::before, .page-badge::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--primary);
}
h1, h2, h3 { color: var(--deep); line-height: 1.18; margin: 0; letter-spacing: -.04em; }
p { margin: 0; color: var(--muted); }
.lead { font-size: 18px; color: #4d6075; }

.magazine-hero {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 64px 0 52px;
  display: grid;
  gap: 34px;
}
.hero-copy h1 {
  font-size: clamp(42px, 9vw, 86px);
  max-width: 820px;
}
.hero-copy .lead { margin-top: 22px; max-width: 670px; }
.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
  margin-top: 30px;
}
.safety-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.safety-tags span {
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.78);
  color: #52647a;
  border-radius: 999px;
  font-size: 13px;
}
.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  box-shadow: 0 12px 28px rgba(70,139,223,.26);
  transition: transform .18s ease, box-shadow .18s ease;
}
.download-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 36px rgba(70,139,223,.30); }
.product-visual {
  position: relative;
  min-height: 440px;
  border-radius: 32px;
  background: radial-gradient(circle at 20% 20%, rgba(70,139,223,.24), transparent 28%), linear-gradient(145deg, #eef7ff, #ffffff 62%);
  border: 1px solid rgba(70,139,223,.15);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: grid;
  place-items: center;
  padding: 34px;
}
.product-visual .app-shot { width: min(270px, 72vw); filter: drop-shadow(0 26px 48px rgba(20, 55, 95, .18)); }
.float-card {
  position: absolute;
  max-width: 210px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255,255,255,.88);
  border: 1px solid rgba(70,139,223,.16);
  box-shadow: 0 16px 34px rgba(34,77,130,.10);
}
.float-card strong { display: block; color: var(--deep); font-size: 14px; }
.float-card span { color: var(--muted); font-size: 12px; }
.card-a { left: 18px; top: 26px; }
.card-b { right: 18px; top: 44%; }
.card-c { left: 36px; bottom: 26px; }

.brand-statement {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 54px 28px;
  border-radius: 34px;
  background: linear-gradient(135deg, rgba(70,139,223,.13), rgba(255,255,255,.94) 56%, rgba(70,139,223,.08));
  border: 1px solid rgba(70,139,223,.16);
}
.brand-statement blockquote {
  margin: 18px 0 20px;
  font-size: clamp(28px, 6vw, 56px);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -.05em;
  color: var(--deep);
}
.brand-statement p { max-width: 880px; font-size: 17px; }

.split-section {
  display: grid;
  gap: 26px;
  align-items: center;
}
.split-copy h2, .section-title { font-size: clamp(32px, 6vw, 58px); margin-top: 10px; }
.split-copy p { margin-top: 16px; }
.info-panel, .risk-panel, .cta-section, .page-hero, .article-card, .faq-card {
  border: 1px solid rgba(70,139,223,.14);
  background: rgba(255,255,255,.82);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
}
.info-panel {
  padding: 24px;
  background: linear-gradient(145deg, #ffffff, #f0f7ff);
}
.info-row {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.info-row:last-child { border-bottom: 0; }
.info-row strong { display: block; color: var(--deep); }
.info-row span { color: var(--muted); font-size: 14px; }

.story-timeline { margin-top: 34px; position: relative; display: grid; gap: 18px; }
.timeline-item {
  padding: 22px;
  border-radius: 24px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 16px 40px rgba(35,73,119,.06);
}
.timeline-no { color: var(--primary); font-weight: 900; letter-spacing: .08em; }
.timeline-item h3 { margin-top: 8px; font-size: 22px; }
.timeline-item p { margin-top: 10px; }
.text-link { color: var(--primary); font-weight: 800; display: inline-block; margin-top: 12px; }

.chapter-index {
  display: grid;
  gap: 30px;
  align-items: start;
}
.chapter-list { display: grid; gap: 12px; }
.chapter-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.chapter-no { color: var(--primary); font-weight: 900; font-size: 18px; }
.chapter-item h3 { font-size: 21px; }
.chapter-item p { margin-top: 4px; }

.scenario-story-grid { display: grid; gap: 16px; margin-top: 28px; }
.scenario-card {
  padding: 24px;
  border-radius: 24px;
  background: #fff;
  border: 1px solid rgba(70,139,223,.14);
  min-height: 210px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.scenario-card h3 { font-size: 24px; }
.scenario-card p { margin-top: 10px; }

.risk-panel {
  padding: 28px;
  background: linear-gradient(135deg, #eef7ff, #ffffff 60%);
}
.risk-grid { display: grid; gap: 14px; margin-top: 24px; }
.risk-item {
  padding: 18px;
  border-radius: 18px;
  background: rgba(255,255,255,.78);
  border: 1px solid rgba(70,139,223,.14);
}
.risk-item strong { display: block; color: var(--deep); }
.risk-item span { color: var(--muted); font-size: 14px; }

.faq-list { display: grid; gap: 14px; margin-top: 26px; }
.faq-item, .faq-card {
  padding: 22px;
  border-radius: 22px;
  background: #fff;
  border: 1px solid var(--line);
}
.faq-item h3, .faq-card h2 { font-size: 21px; margin-bottom: 8px; }

.cta-section {
  width: min(980px, calc(100% - 32px));
  margin: 0 auto 74px;
  padding: 44px 24px;
  text-align: center;
  background: linear-gradient(135deg, rgba(70,139,223,.14), #fff 62%);
}
.cta-section h2 { font-size: clamp(30px, 5vw, 52px); }
.cta-section p { margin: 14px auto 24px; max-width: 720px; }

.page-shell { padding: 54px 0 70px; }
.page-hero {
  padding: 34px 24px;
  background: linear-gradient(135deg, #ffffff, #f0f7ff);
}
.page-hero h1 { font-size: clamp(34px, 7vw, 64px); margin-top: 12px; max-width: 900px; }
.page-hero p { margin-top: 16px; max-width: 780px; font-size: 17px; }
.page-layout { display: grid; gap: 24px; margin-top: 28px; }
.article-card { padding: 26px; }
.article-card h2 { font-size: 28px; margin-top: 4px; margin-bottom: 12px; }
.article-card h3 { font-size: 22px; margin-top: 24px; margin-bottom: 8px; }
.article-card p + p { margin-top: 14px; }
.side-panel {
  padding: 22px;
  border-radius: 22px;
  background: var(--blue-paper);
  border: 1px solid rgba(70,139,223,.14);
  align-self: start;
}
.side-panel h2, .side-panel h3 { font-size: 22px; }
.side-panel ul, .article-card ul, .article-card ol { padding-left: 20px; color: var(--muted); margin: 12px 0 0; }
.side-panel li, .article-card li { margin: 8px 0; }
.check-list { display: grid; gap: 10px; margin-top: 16px; }
.check-list div {
  padding: 13px 14px;
  border-radius: 16px;
  background: var(--primary-weak);
  color: #465a72;
}
.download-strip {
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.step-list { counter-reset: step; display: grid; gap: 14px; margin-top: 18px; }
.step-list div {
  counter-increment: step;
  padding: 18px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--line);
}
.step-list div::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  color: var(--primary);
  font-weight: 900;
  margin-bottom: 6px;
}

.site-footer {
  background: #f1f7ff;
  border-top: 1px solid rgba(70,139,223,.14);
  padding: 42px 0 24px;
}
.footer-inner {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  display: grid;
  gap: 28px;
}
.footer-brand img { width: 34px; height: 34px; border-radius: 10px; }
.footer-inner p { margin-top: 12px; max-width: 540px; }
.footer-links { display: grid; gap: 10px; }
.footer-links a { color: #55677c; }
.footer-links a:hover { color: var(--primary); }
.footer-bottom {
  width: min(1120px, calc(100% - 32px));
  margin: 28px auto 0;
  color: #7a8798;
  font-size: 13px;
  border-top: 1px solid rgba(70,139,223,.12);
  padding-top: 18px;
}

@media (min-width: 700px) {
  .magazine-hero { grid-template-columns: 1.05fr .95fr; align-items: center; padding-top: 82px; }
  .hero-actions { flex-direction: row; flex-wrap: wrap; align-items: center; }
  .split-section { grid-template-columns: .95fr 1.05fr; }
  .split-section.reverse { grid-template-columns: 1.05fr .95fr; }
  .split-section.reverse .split-copy { order: 2; }
  .split-section.reverse .info-panel { order: 1; }
  .story-timeline { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .timeline-item:nth-child(even) { transform: translateY(34px); }
  .chapter-index { grid-template-columns: .7fr 1.3fr; }
  .scenario-story-grid { grid-template-columns: repeat(3, 1fr); }
  .risk-grid { grid-template-columns: repeat(2, 1fr); }
  .page-layout { grid-template-columns: minmax(0, 1fr) 320px; }
  .footer-inner { grid-template-columns: 1fr auto; align-items: start; }
}

@media (min-width: 1024px) {
  .section { padding: 94px 0; }
  .brand-statement { padding: 70px; }
  .scenario-card.featured { grid-column: span 2; }
  .page-hero { padding: 54px; }
  .article-card { padding: 38px; }
}

@media (max-width: 699px) {
  .header-inner { flex-direction: column; align-items: flex-start; padding: 14px 0; }
  .site-nav { justify-content: flex-start; width: 100%; }
  .product-visual { min-height: 390px; padding: 22px; }
  .float-card { position: static; margin-top: 12px; max-width: none; width: 100%; }
  .product-visual { display: flex; flex-direction: column; }
  .download-btn { width: 100%; }
  .brand-statement { padding: 34px 22px; }
  .section { padding: 56px 0; }
  .cta-section { margin-bottom: 54px; }
}