:root {
  --brand: #2980FE;
  --brand-deep: #1767D6;
  --brand-soft: #EAF3FF;
  --ice: #F5F8FD;
  --light: #F7F9FC;
  --white: #FFFFFF;
  --ink: #172033;
  --body: #465266;
  --muted: #718096;
  --line: #DCE6F2;
  --footer: #10233F;
  --shadow: 0 18px 50px rgba(26, 78, 145, .10);
  --shadow-soft: 0 10px 30px rgba(35, 86, 151, .08);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --shell: min(1180px, calc(100% - 40px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--body);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", Arial, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { color: inherit; }
p { margin: 0 0 1em; }
h1, h2, h3 { margin: 0; color: var(--ink); line-height: 1.2; letter-spacing: -.02em; }
h1 { font-size: clamp(2.55rem, 6vw, 5.2rem); }
h2 { font-size: clamp(2rem, 4vw, 3.35rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.45rem); }
main { display: block; }
section { position: relative; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 2000; padding: 12px 18px; background: var(--ink); color: white; border-radius: 12px; transition: top .2s; }
.skip-link:focus { top: 16px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(220, 230, 242, .85);
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(18px);
}
.header-shell {
  width: var(--shell);
  height: 76px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
}
.brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand img { width: auto; max-height: 44px; object-fit: contain; }
.desktop-nav { display: flex; justify-content: center; align-items: stretch; gap: 3px; height: 100%; min-width: 0; }
.nav-link { position: relative; display: inline-flex; align-items: center; padding: 0 11px; color: #39465b; font-size: .94rem; font-weight: 700; white-space: nowrap; }
.nav-link::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 0; height: 3px; border-radius: 3px 3px 0 0; background: var(--brand); transform: scaleX(0); transition: transform .2s; }
.nav-link:hover, .nav-link:focus-visible, .nav-link.is-active { color: var(--brand-deep); }
.nav-link:hover::after, .nav-link:focus-visible::after, .nav-link.is-active::after { transform: scaleX(1); }
.nav-group { position: relative; display: flex; }
.mega-menu {
  position: absolute;
  top: calc(100% - 4px);
  left: 50%;
  width: 650px;
  padding: 20px;
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 20px;
  border: 1px solid var(--line);
  border-radius: 0 0 22px 22px;
  background: white;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 10px);
  transition: .18s ease;
}
.nav-group:hover .mega-menu, .nav-group:focus-within .mega-menu { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.mega-intro { padding: 20px; border-radius: 18px; background: linear-gradient(150deg, var(--brand-soft), #f8fbff); }
.eyebrow { display: inline-block; margin-bottom: 10px; color: var(--brand-deep); font-size: .78rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.mega-intro strong { display: block; color: var(--ink); font-size: 1.1rem; line-height: 1.35; }
.mega-intro p { margin: 10px 0 0; color: var(--muted); font-size: .88rem; line-height: 1.6; }
.mega-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.mega-links a { padding: 12px 13px; border-radius: 14px; transition: background .2s, transform .2s; }
.mega-links a:hover, .mega-links a:focus-visible { background: var(--ice); transform: translateY(-1px); }
.mega-links strong, .mega-links span { display: block; }
.mega-links strong { color: var(--ink); font-size: .94rem; }
.mega-links span { color: var(--muted); font-size: .8rem; }
.header-actions { display: flex; align-items: center; gap: 10px; }
.download-btn { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; padding: 10px 20px; border: 1px solid var(--brand); border-radius: 999px; background: linear-gradient(135deg, var(--brand), var(--brand-deep)); color: white; font-weight: 800; line-height: 1; box-shadow: 0 8px 22px rgba(41,128,254,.23); transition: transform .2s, box-shadow .2s; white-space: nowrap; }
.download-btn:hover, .download-btn:focus-visible { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(41,128,254,.3); }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 0; border: 1px solid var(--line); border-radius: 14px; background: white; align-items: center; justify-content: center; flex-direction: column; gap: 5px; cursor: pointer; }
.menu-toggle span:not(.sr-only) { width: 20px; height: 2px; border-radius: 2px; background: var(--ink); }
.menu-overlay { position: fixed; inset: 0; z-index: 1200; background: rgba(16,35,63,.44); opacity: 0; transition: opacity .22s; }
.menu-overlay.is-visible { opacity: 1; }
.mobile-menu { position: fixed; top: 0; right: 0; bottom: 0; z-index: 1300; width: min(440px, 92vw); display: flex; flex-direction: column; background: white; box-shadow: -20px 0 60px rgba(16,35,63,.18); transform: translateX(105%); transition: transform .25s ease; }
.mobile-menu.is-open { transform: translateX(0); }
.mobile-menu-head { min-height: 76px; padding: 14px 20px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--line); }
.menu-close { width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 14px; background: white; color: var(--ink); font-size: 1.8rem; cursor: pointer; }
.mobile-menu-body { flex: 1; overflow-y: auto; padding: 14px 20px 24px; }
.mobile-home { display: flex; min-height: 48px; align-items: center; padding: 0 14px; border-radius: 14px; color: var(--ink); font-weight: 800; }
.mobile-home:hover { background: var(--ice); }
.mobile-nav-group { border-bottom: 1px solid var(--line); }
.mobile-nav-title { width: 100%; min-height: 54px; padding: 0 14px; display: flex; justify-content: space-between; align-items: center; border: 0; background: transparent; color: var(--ink); font-weight: 800; text-align: left; cursor: pointer; }
.mobile-nav-title span { color: var(--brand); font-size: 1.25rem; }
.mobile-nav-links { padding: 0 8px 12px; }
.mobile-nav-links a { display: flex; min-height: 46px; align-items: center; padding: 0 14px; border-radius: 12px; color: var(--body); }
.mobile-nav-links a:hover { background: var(--brand-soft); color: var(--brand-deep); }
.mobile-menu-foot { padding: 18px 20px 24px; border-top: 1px solid var(--line); background: var(--ice); }
.mobile-menu-foot p { color: var(--muted); font-size: .88rem; }
.mobile-menu-foot .download-btn { width: 100%; }

.shell { width: var(--shell); margin: 0 auto; }
.section-pad { padding: 104px 0; }
.section-pad-sm { padding: 72px 0; }
.section-head { max-width: 760px; margin-bottom: 42px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { margin: 18px 0 0; color: var(--muted); font-size: 1.05rem; }
.kicker { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 14px; color: var(--brand-deep); font-size: .82rem; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; }
.kicker::before { content: ""; width: 26px; height: 2px; background: var(--brand); }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.text-link { display: inline-flex; align-items: center; gap: 8px; color: var(--brand-deep); font-weight: 800; }
.text-link::after { content: "→"; transition: transform .2s; }
.text-link:hover::after { transform: translateX(4px); }
.secondary-btn { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; padding: 10px 18px; border: 1px solid var(--line); border-radius: 999px; background: white; color: var(--ink); font-weight: 800; }
.secondary-btn:hover { border-color: var(--brand); color: var(--brand-deep); }
.tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 0; padding: 0; list-style: none; }
.tag-list li { padding: 8px 13px; border: 1px solid rgba(41,128,254,.16); border-radius: 999px; background: rgba(255,255,255,.7); color: var(--brand-deep); font-size: .88rem; font-weight: 800; }

.hero { overflow: hidden; padding: 70px 0 86px; background: radial-gradient(circle at 82% 20%, rgba(41,128,254,.22), transparent 34%), linear-gradient(145deg, #f8fbff 0%, #eef5ff 54%, #fff 100%); }
.hero::before { content: ""; position: absolute; width: 420px; height: 420px; left: -220px; bottom: -260px; border: 80px solid rgba(41,128,254,.06); border-radius: 50%; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.16fr .84fr; align-items: center; gap: 56px; }
.hero-copy p { max-width: 680px; margin: 24px 0 30px; font-size: 1.08rem; color: #506078; }
.hero-copy .button-row { margin-top: 28px; }
.hero-visual { position: relative; min-height: 560px; display: grid; place-items: center; }
.hero-image-wrap { width: min(430px, 100%); padding: 26px; border: 1px solid rgba(255,255,255,.8); border-radius: 44px; background: rgba(255,255,255,.64); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
.hero-image-wrap img { width: 100%; max-height: 500px; object-fit: contain; }
.float-note { position: absolute; max-width: 190px; padding: 14px 16px; border: 1px solid rgba(220,230,242,.9); border-radius: 16px; background: rgba(255,255,255,.92); box-shadow: var(--shadow-soft); color: var(--ink); font-size: .88rem; font-weight: 800; }
.float-note small { display: block; margin-top: 3px; color: var(--muted); font-weight: 600; }
.float-note.one { top: 12%; left: -2%; }
.float-note.two { right: -5%; top: 43%; }
.float-note.three { left: 6%; bottom: 7%; }

.capability-strip { margin-top: -34px; position: relative; z-index: 3; }
.capability-grid { display: grid; grid-template-columns: repeat(4,1fr); overflow: hidden; border: 1px solid var(--line); border-radius: 24px; background: white; box-shadow: var(--shadow-soft); }
.capability-item { position: relative; padding: 26px; }
.capability-item:not(:last-child)::after { content: ""; position: absolute; right: 0; top: 22px; bottom: 22px; width: 1px; background: var(--line); }
.capability-item strong { display: block; color: var(--ink); font-size: 1.05rem; }
.capability-item p { margin: 9px 0 0; color: var(--muted); font-size: .9rem; }

.category-section { background: var(--white); }
.category-grid { display: grid; grid-template-columns: repeat(15, minmax(0, 1fr)); gap: 16px; }
.category-card { position: relative; min-height: 210px; padding: 27px; overflow: hidden; border: 1px solid var(--line); border-radius: 22px; background: white; box-shadow: var(--shadow-soft); transition: transform .2s, border-color .2s; }
.category-card:hover { transform: translateY(-4px); border-color: rgba(41,128,254,.45); }
.category-card::before { content: attr(data-index); display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 28px; border-radius: 14px; background: var(--brand-soft); color: var(--brand-deep); font-weight: 900; }
.category-card h3 { margin-bottom: 10px; }
.category-card p { color: var(--muted); font-size: .92rem; }
.category-card:nth-child(1) { grid-column: span 6; background: linear-gradient(145deg, var(--brand), var(--brand-deep)); border-color: transparent; }
.category-card:nth-child(1) h3, .category-card:nth-child(1) p, .category-card:nth-child(1) .text-link { color: white; }
.category-card:nth-child(1)::before { background: rgba(255,255,255,.18); color: white; }
.category-card:nth-child(2), .category-card:nth-child(3), .category-card:nth-child(4) { grid-column: span 3; }
.category-card:nth-child(5), .category-card:nth-child(6), .category-card:nth-child(7) { grid-column: span 5; }
.category-card:nth-child(8) { grid-column: span 3; }
.category-card:nth-child(9), .category-card:nth-child(10) { grid-column: span 6; background: var(--ice); }

.feature-band { background: linear-gradient(180deg, var(--brand-soft), #f9fbff); }
.feature-panel { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: center; padding: 46px; border: 1px solid rgba(41,128,254,.12); border-radius: var(--radius-xl); background: rgba(255,255,255,.86); box-shadow: var(--shadow-soft); }
.product-image { min-height: 390px; display: grid; place-items: center; padding: 30px; border-radius: 24px; background: linear-gradient(145deg, #eaf3ff, #fff); }
.product-image img { width: 100%; max-height: 430px; object-fit: contain; }
.check-list { display: grid; gap: 12px; margin: 26px 0 30px; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 34px; color: var(--body); }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: .08em; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--brand-soft); color: var(--brand-deep); font-size: .78rem; font-weight: 900; }

.offset-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 28px; align-items: start; }
.topic-panel { padding: 38px; border-radius: var(--radius-xl); border: 1px solid var(--line); background: white; box-shadow: var(--shadow-soft); }
.topic-panel:nth-child(2) { margin-top: 68px; background: var(--ice); }
.topic-panel p { color: var(--muted); }
.topic-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 24px 0; padding: 0; list-style: none; }
.topic-list li { padding: 12px 14px; border-radius: 13px; background: var(--brand-soft); color: var(--brand-deep); font-weight: 800; font-size: .9rem; }

.dual-feature { display: grid; grid-template-columns: 1.15fr .85fr; gap: 24px; align-items: stretch; }
.dual-card { padding: 42px; border-radius: var(--radius-xl); overflow: hidden; }
.dual-card.primary { background: linear-gradient(145deg, #f1f7ff, #ffffff); border: 1px solid var(--line); }
.dual-card.secondary { background: linear-gradient(150deg, var(--brand), var(--brand-deep)); color: white; }
.dual-card.secondary h2, .dual-card.secondary h3, .dual-card.secondary p, .dual-card.secondary .text-link { color: white; }
.dual-card .inline-image { margin-top: 26px; min-height: 250px; display: grid; place-items: center; }
.dual-card .inline-image img { max-height: 280px; object-fit: contain; }

.security-block { overflow: hidden; background: linear-gradient(140deg, var(--footer), #164a8a); color: white; }
.security-block::after { content: ""; position: absolute; right: -170px; top: -180px; width: 480px; height: 480px; border: 80px solid rgba(255,255,255,.055); border-radius: 50%; }
.security-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .9fr 1.1fr; gap: 60px; align-items: center; }
.security-block h2, .security-block h3 { color: white; }
.security-block p { color: #c8d8ee; }
.security-points { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; }
.security-point { padding: 20px; border: 1px solid rgba(255,255,255,.13); border-radius: 18px; background: rgba(255,255,255,.07); }
.security-point strong { display: block; color: white; }
.security-point span { color: #c8d8ee; font-size: .88rem; }
.security-alert { margin-top: 24px; padding: 18px 20px; border-left: 4px solid #77b7ff; border-radius: 12px; background: rgba(234,243,255,.1); color: white; }

.image-copy-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 52px; align-items: center; }
.image-frame { min-height: 420px; padding: 34px; display: grid; place-items: center; border-radius: var(--radius-xl); background: linear-gradient(145deg, var(--ice), var(--brand-soft)); }
.image-frame img { max-height: 410px; object-fit: contain; }

.swap-layout { display: grid; grid-template-columns: .88fr 1.12fr; gap: 32px; align-items: stretch; }
.swap-visual { padding: 36px; border-radius: var(--radius-xl); background: var(--brand-soft); }
.swap-visual img { width: 100%; max-height: 360px; object-fit: contain; margin-bottom: 24px; }
.swap-checks { padding: 42px; border: 1px solid var(--line); border-radius: var(--radius-xl); background: white; box-shadow: var(--shadow-soft); }
.check-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; margin-top: 24px; }
.check-chip { padding: 15px; border-radius: 14px; background: var(--ice); color: var(--ink); font-weight: 800; }

.steps-section { background: var(--ice); }
.steps-grid { display: grid; grid-template-columns: repeat(6,1fr); gap: 12px; }
.step { position: relative; padding: 24px 18px 22px; border: 1px solid var(--line); border-radius: 18px; background: white; }
.step:not(:last-child)::after { content: ""; position: absolute; top: 39px; right: -14px; width: 16px; height: 2px; background: var(--brand); }
.step-number { display: grid; place-items: center; width: 34px; height: 34px; margin-bottom: 18px; border-radius: 11px; background: var(--brand); color: white; font-weight: 900; }
.step p { margin: 9px 0 12px; color: var(--muted); font-size: .86rem; }
.step a { color: var(--brand-deep); font-weight: 800; font-size: .86rem; }

.eco-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.eco-card { padding: 42px; border: 1px solid var(--line); border-radius: var(--radius-xl); background: white; box-shadow: var(--shadow-soft); }
.eco-card:nth-child(2) { background: linear-gradient(145deg, var(--brand-soft), white); }

.timeline { position: relative; display: grid; gap: 0; }
.timeline::before { content: ""; position: absolute; left: 18px; top: 12px; bottom: 12px; width: 2px; background: var(--line); }
.timeline-item { position: relative; padding: 0 0 28px 58px; }
.timeline-dot { position: absolute; left: 7px; top: 4px; width: 24px; height: 24px; border: 6px solid white; border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 1px var(--line); }
.timeline-meta { color: var(--brand-deep); font-size: .82rem; font-weight: 800; }
.timeline-item h3 { margin: 4px 0 8px; }
.timeline-item p { color: var(--muted); }

.review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.review { padding: 28px; border: 1px solid var(--line); border-radius: 20px; background: white; }
.review:nth-child(2), .review:nth-child(5) { background: var(--ice); }
.review-mark { color: var(--brand); font-size: 2.2rem; line-height: .8; }
.review p { margin: 14px 0 18px; color: var(--body); }
.review span { color: var(--muted); font-size: .85rem; font-weight: 700; }

.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-question { width: 100%; min-height: 74px; display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 18px 2px; border: 0; background: transparent; color: var(--ink); font-weight: 800; text-align: left; cursor: pointer; }
.faq-question::after { content: "+"; flex: 0 0 36px; display: grid; place-items: center; width: 36px; height: 36px; border-radius: 12px; background: var(--brand-soft); color: var(--brand-deep); font-size: 1.4rem; }
.faq-item.is-open .faq-question::after { content: "−"; }
.faq-answer { padding: 0 54px 24px 2px; color: var(--muted); }

.cta-section { padding: 92px 0; background: linear-gradient(145deg, var(--brand), var(--brand-deep)); text-align: center; color: white; }
.cta-section h2 { color: white; }
.cta-section p { max-width: 700px; margin: 18px auto 28px; color: #e7f1ff; }
.cta-section .download-btn { border-color: white; background: white; color: var(--brand-deep); box-shadow: none; }

/* Inner pages */
.page-hero { padding: 82px 0 72px; overflow: hidden; background: radial-gradient(circle at 80% 10%, rgba(41,128,254,.18), transparent 32%), var(--ice); }
.page-hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 50px; align-items: center; }
.page-hero h1 { font-size: clamp(2.4rem, 5vw, 4.4rem); }
.page-hero p { margin: 22px 0 28px; color: var(--muted); font-size: 1.06rem; }
.page-hero-art { min-height: 360px; padding: 30px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: var(--radius-xl); background: rgba(255,255,255,.84); box-shadow: var(--shadow-soft); }
.page-hero-art img { max-height: 360px; object-fit: contain; }
.abstract-art { position: relative; width: 100%; min-height: 300px; overflow: hidden; border-radius: 22px; background: linear-gradient(145deg, #dcecff, #f9fcff); }
.abstract-art::before { content: ""; position: absolute; width: 180px; height: 180px; left: 12%; top: 16%; border-radius: 42px; background: linear-gradient(145deg, var(--brand), var(--brand-deep)); transform: rotate(-12deg); box-shadow: var(--shadow); }
.abstract-art::after { content: ""; position: absolute; width: 210px; height: 110px; right: 9%; bottom: 16%; border-radius: 999px; border: 22px solid white; background: rgba(255,255,255,.25); }
.page-intro-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 54px; align-items: start; }
.sticky-label { position: sticky; top: 110px; padding: 26px; border-radius: 20px; background: var(--brand-soft); }
.sticky-label strong { display: block; color: var(--ink); font-size: 1.1rem; }
.sticky-label p { margin: 8px 0 0; color: var(--muted); font-size: .9rem; }
.prose h2 { margin-bottom: 18px; }
.prose h3 { margin: 34px 0 12px; }
.prose p { color: var(--body); }
.info-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.info-card { padding: 28px; border: 1px solid var(--line); border-radius: 20px; background: white; }
.info-card p { margin: 10px 0 0; color: var(--muted); }
.info-card.featured { grid-column: span 2; background: linear-gradient(145deg, var(--brand-soft), white); }
.process-list { counter-reset: steps; display: grid; gap: 14px; padding: 0; list-style: none; }
.process-list li { counter-increment: steps; position: relative; padding: 22px 24px 22px 76px; border: 1px solid var(--line); border-radius: 18px; background: white; }
.process-list li::before { content: counter(steps); position: absolute; left: 22px; top: 20px; display: grid; place-items: center; width: 36px; height: 36px; border-radius: 12px; background: var(--brand); color: white; font-weight: 900; }
.notice-box { padding: 28px 30px; border-left: 5px solid var(--brand); border-radius: 16px; background: var(--brand-soft); }
.notice-box strong { display: block; margin-bottom: 8px; color: var(--ink); }
.compare-table { width: 100%; border-collapse: collapse; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; background: white; }
.compare-table th, .compare-table td { padding: 16px 18px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.compare-table th { background: var(--ice); color: var(--ink); }
.compare-table tr:last-child td { border-bottom: 0; }
.related-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.related-links a { padding: 11px 15px; border: 1px solid var(--line); border-radius: 999px; color: var(--brand-deep); font-weight: 800; }
.related-links a:hover { border-color: var(--brand); background: var(--brand-soft); }
.support-categories { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.support-card { padding: 28px; border: 1px solid var(--line); border-radius: 20px; background: white; }
.support-card ul { padding-left: 20px; color: var(--muted); }
.policy-section { padding: 30px 0; border-bottom: 1px solid var(--line); }
.policy-section:last-child { border-bottom: 0; }

.site-footer { padding: 70px 0 0; background: var(--footer); color: #c8d8ee; }
.footer-shell { width: var(--shell); margin: 0 auto; display: grid; grid-template-columns: .9fr 1.7fr; gap: 64px; }
.brand-on-dark { padding: 8px 12px; border-radius: 12px; background: white; }
.footer-brand p { max-width: 420px; margin: 22px 0; color: #b8c9df; }
.footer-links { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.footer-links strong { display: block; margin-bottom: 14px; color: white; }
.footer-links a { display: block; padding: 5px 0; color: #b8c9df; font-size: .9rem; }
.footer-links a:hover { color: white; }
.footer-bottom { width: var(--shell); margin: 56px auto 0; padding: 22px 0; display: flex; justify-content: space-between; gap: 24px; border-top: 1px solid rgba(255,255,255,.1); color: #93a9c4; font-size: .84rem; }

@media (max-width: 1120px) {
  :root { --shell: min(100% - 32px, 1040px); }
  .desktop-nav { display: none; }
  .header-shell { grid-template-columns: 1fr auto; }
  .menu-toggle { display: inline-flex; }
  .hero-grid, .page-hero-grid { gap: 34px; }
  .steps-grid { grid-template-columns: repeat(3,1fr); }
  .step:nth-child(3)::after { display: none; }
  .footer-shell { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .section-pad { padding: 82px 0; }
  .hero { padding-top: 48px; }
  .hero-grid, .feature-panel, .security-grid, .image-copy-grid, .swap-layout, .page-hero-grid, .page-intro-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 480px; }
  .capability-grid { grid-template-columns: repeat(2,1fr); }
  .capability-item:nth-child(2)::after { display: none; }
  .capability-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .category-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .category-card, .category-card:nth-child(n) { grid-column: auto; }
  .category-card:nth-child(1), .category-card:nth-child(9), .category-card:nth-child(10) { grid-column: span 2; }
  .offset-grid, .dual-feature, .eco-grid { grid-template-columns: 1fr; }
  .topic-panel:nth-child(2) { margin-top: 0; }
  .review-grid, .info-grid, .support-categories { grid-template-columns: repeat(2,1fr); }
  .info-card.featured { grid-column: span 2; }
  .footer-links { grid-template-columns: repeat(2,1fr); }
  .sticky-label { position: static; }
}

@media (max-width: 620px) {
  :root { --shell: calc(100% - 24px); }
  .header-shell { height: 68px; gap: 10px; }
  .brand img { max-width: 126px; max-height: 38px; }
  .header-actions { gap: 7px; }
  .header-actions .download-btn { min-height: 40px; padding: 9px 13px; font-size: .86rem; }
  .menu-toggle { width: 42px; height: 42px; border-radius: 12px; }
  h1 { font-size: clamp(2.3rem, 13vw, 3.45rem); }
  h2 { font-size: clamp(1.8rem, 9vw, 2.6rem); }
  .section-pad { padding: 68px 0; }
  .section-pad-sm { padding: 52px 0; }
  .hero { padding: 42px 0 70px; }
  .hero-copy p { font-size: 1rem; }
  .button-row { align-items: stretch; }
  .button-row .download-btn, .button-row .secondary-btn { flex: 1 1 100%; }
  .hero-visual { min-height: 410px; padding: 0 8px; }
  .hero-image-wrap { padding: 18px; border-radius: 30px; }
  .float-note { max-width: 154px; padding: 10px 11px; font-size: .78rem; }
  .float-note.one { top: 3%; left: 0; }
  .float-note.two { right: 0; top: 45%; }
  .float-note.three { left: 0; bottom: 3%; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-item:not(:last-child)::after { display: none; }
  .capability-item { border-bottom: 1px solid var(--line); }
  .capability-item:last-child { border-bottom: 0; }
  .category-grid { grid-template-columns: 1fr; }
  .category-card, .category-card:nth-child(n) { grid-column: auto; min-height: 0; }
  .feature-panel, .topic-panel, .dual-card, .swap-checks, .eco-card { padding: 28px 22px; }
  .product-image, .image-frame { min-height: 300px; padding: 20px; }
  .topic-list, .security-points, .check-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .step:not(:last-child)::after { left: 33px; right: auto; top: auto; bottom: -14px; width: 2px; height: 16px; display: block; }
  .review-grid, .info-grid, .support-categories { grid-template-columns: 1fr; }
  .info-card.featured { grid-column: auto; }
  .page-hero { padding: 58px 0; }
  .page-hero-art { min-height: 280px; padding: 18px; }
  .compare-table { display: block; overflow-x: auto; white-space: nowrap; }
  .footer-links { grid-template-columns: 1fr 1fr; gap: 28px 18px; }
  .footer-bottom { flex-direction: column; }
}