:root {
  --brand: #2980FE;
  --brand-deep: #1767D6;
  --brand-soft: #EAF3FF;
  --canvas: #F5F8FD;
  --muted-bg: #F7F9FC;
  --white: #FFFFFF;
  --text: #172033;
  --body: #465266;
  --muted: #718096;
  --border: #DCE6F2;
  --footer: #10233F;
  --shadow: 0 18px 55px rgba(23, 103, 214, .10);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: min(1180px, calc(100% - 40px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Noto Sans TC", Arial, sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
p { margin: 0 0 1rem; color: var(--body); }
h1, h2, h3 { margin: 0; line-height: 1.22; letter-spacing: -.025em; }
h1 { font-size: clamp(2.45rem, 6vw, 5rem); }
h2 { font-size: clamp(1.8rem, 3.8vw, 3rem); }
h3 { font-size: 1.15rem; }
section { position: relative; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 9999; padding: 10px 16px; background: var(--text); color: #fff; border-radius: 10px; }
.skip-link:focus { top: 16px; }

.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.94); border-bottom: 1px solid rgba(220,230,242,.85); backdrop-filter: blur(18px); }
.header-shell { width: var(--container); min-height: 78px; margin: 0 auto; display: flex; align-items: center; gap: 22px; }
.brand { flex: 0 0 auto; display: inline-flex; align-items: center; min-height: 48px; }
.brand img { width: 164px; object-fit: contain; }
.desktop-nav { flex: 1; display: flex; align-items: center; justify-content: center; gap: 2px; white-space: nowrap; }
.nav-link, .nav-trigger { min-height: 44px; display: inline-flex; align-items: center; gap: 5px; padding: 0 12px; border: 0; background: transparent; color: var(--body); border-radius: 12px; cursor: pointer; }
.nav-link:hover, .nav-trigger:hover, .nav-link.is-active, .nav-trigger[aria-expanded="true"] { color: var(--brand-deep); background: var(--brand-soft); }
.nav-group { position: relative; }
.mega-menu { position: absolute; left: 50%; top: calc(100% + 14px); transform: translate(-50%, 10px); width: min(760px, calc(100vw - 48px)); padding: 22px; display: grid; grid-template-columns: 210px 1fr; gap: 18px; background: #fff; border: 1px solid var(--border); border-radius: 24px; box-shadow: var(--shadow); opacity: 0; visibility: hidden; pointer-events: none; transition: .2s ease; }
.nav-group:hover .mega-menu, .nav-trigger[aria-expanded="true"] + .mega-menu, .nav-group:focus-within .mega-menu { opacity: 1; visibility: visible; pointer-events: auto; transform: translate(-50%, 0); }
.mega-intro { padding: 18px; background: linear-gradient(145deg, var(--brand-soft), #fff); border-radius: 18px; }
.mega-intro strong { display: block; margin: 8px 0; font-size: 1.3rem; }
.mega-intro p { font-size: .9rem; margin: 0; }
.eyebrow { display: inline-flex; color: var(--brand-deep); font-size: .78rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.mega-links { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 8px; }
.mega-links a { padding: 12px 14px; border-radius: 14px; }
.mega-links a:hover, .mega-links a:focus { background: var(--muted-bg); }
.mega-links strong, .mega-links span { display: block; }
.mega-links span { margin-top: 3px; color: var(--muted); font-size: .82rem; line-height: 1.45; }
.header-actions { display: flex; align-items: center; gap: 9px; margin-left: auto; }
.download-btn, .button-primary, .button-secondary { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 0 23px; border-radius: 999px; font-weight: 800; transition: .2s ease; }
.download-btn, .button-primary { color: #fff; background: linear-gradient(135deg, var(--brand), var(--brand-deep)); box-shadow: 0 12px 26px rgba(41,128,254,.22); }
.download-btn:hover, .button-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 32px rgba(41,128,254,.28); }
.download-btn.compact { min-height: 44px; padding: 0 18px; }
.button-secondary { color: var(--brand-deep); background: #fff; border: 1px solid var(--border); }
.button-secondary:hover { border-color: var(--brand); background: var(--brand-soft); }
.menu-toggle { width: 46px; height: 46px; padding: 0; display: none; align-items: center; justify-content: center; flex-direction: column; gap: 5px; border: 1px solid var(--border); background: #fff; border-radius: 50%; cursor: pointer; }
.menu-toggle span { width: 18px; height: 2px; background: var(--text); border-radius: 2px; }

.menu-overlay { position: fixed; inset: 0; z-index: 1090; background: rgba(16,35,63,.42); opacity: 0; transition: .2s ease; }
.menu-overlay.is-visible { opacity: 1; }
.mobile-menu { position: fixed; top: 0; right: 0; bottom: 0; z-index: 1100; width: min(92vw, 470px); padding: 20px; background: #fff; transform: translateX(105%); transition: .25s ease; overflow-y: auto; box-shadow: -30px 0 70px rgba(16,35,63,.16); }
.mobile-menu.is-open { transform: translateX(0); }
.mobile-menu-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.menu-close { width: 46px; height: 46px; border: 0; background: var(--muted-bg); border-radius: 50%; font-size: 1.8rem; cursor: pointer; }
.mobile-nav { display: grid; gap: 10px; padding-top: 18px; }
.mobile-home { min-height: 48px; display: flex; align-items: center; padding: 0 14px; font-weight: 800; border-radius: 14px; background: var(--muted-bg); }
.mobile-group { border: 1px solid var(--border); border-radius: 16px; overflow: hidden; }
.mobile-group-trigger { width: 100%; min-height: 52px; padding: 0 15px; display: flex; align-items: center; justify-content: space-between; border: 0; background: #fff; font-weight: 800; text-align: left; cursor: pointer; }
.mobile-group-links { padding: 8px; background: var(--muted-bg); }
.mobile-group-links a { display: block; padding: 12px; border-radius: 12px; }
.mobile-group-links a:hover { background: #fff; }
.mobile-group-links strong, .mobile-group-links span { display: block; }
.mobile-group-links span { margin-top: 2px; color: var(--muted); font-size: .84rem; }

main { overflow: hidden; }
.container { width: var(--container); margin: 0 auto; }
.section { padding: 96px 0; }
.section-sm { padding: 68px 0; }
.section-soft { background: var(--canvas); }
.section-blue { background: linear-gradient(145deg, #F0F6FF, #fff); }
.section-dark { color: #fff; background: linear-gradient(135deg, #10233F, #1767D6); }
.section-dark p, .section-dark .muted { color: rgba(255,255,255,.78); }
.section-head { max-width: 760px; margin-bottom: 38px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head .eyebrow { margin-bottom: 12px; }
.section-head p { margin-top: 16px; font-size: 1.04rem; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.text-link { display: inline-flex; align-items: center; gap: 6px; color: var(--brand-deep); font-weight: 800; }
.text-link::after { content: '→'; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }

.hero { padding: 74px 0 52px; background: radial-gradient(circle at 78% 18%, rgba(41,128,254,.18), transparent 30%), linear-gradient(180deg, #fff, #F5F8FD); }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: 54px; }
.hero-copy p { max-width: 700px; margin-top: 22px; font-size: 1.08rem; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.hero-tags span { padding: 8px 13px; border: 1px solid #CFE1FA; background: rgba(255,255,255,.78); color: var(--brand-deep); border-radius: 999px; font-size: .88rem; font-weight: 750; }
.hero-visual { position: relative; min-height: 530px; display: grid; place-items: center; }
.hero-visual::before { content: ''; position: absolute; width: 86%; aspect-ratio: 1; border-radius: 50%; background: linear-gradient(145deg, rgba(41,128,254,.2), rgba(234,243,255,.5)); filter: blur(2px); }
.hero-visual img { position: relative; z-index: 2; max-height: 500px; object-fit: contain; filter: drop-shadow(0 28px 40px rgba(16,35,63,.18)); }
.float-note { position: absolute; z-index: 3; max-width: 180px; padding: 13px 16px; background: rgba(255,255,255,.92); border: 1px solid rgba(220,230,242,.9); border-radius: 16px; box-shadow: var(--shadow); font-size: .84rem; font-weight: 800; }
.float-note.one { left: 0; top: 18%; }
.float-note.two { right: 0; top: 38%; }
.float-note.three { left: 8%; bottom: 10%; }

.capability-bar { margin-top: -10px; }
.capability-grid { display: grid; grid-template-columns: repeat(4,1fr); border: 1px solid var(--border); background: #fff; border-radius: 24px; box-shadow: var(--shadow); overflow: hidden; }
.capability-item { padding: 26px; }
.capability-item + .capability-item { border-left: 1px solid var(--border); }
.capability-item h2 { font-size: 1.05rem; margin-bottom: 8px; }
.capability-item p { margin: 0; font-size: .9rem; }

.category-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
.category-card { min-height: 220px; padding: 26px; display: flex; flex-direction: column; border: 1px solid var(--border); border-radius: 22px; background: #fff; transition: .2s ease; }
.category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #BDD8FA; }
.category-card.featured { grid-column: span 2; background: linear-gradient(135deg, var(--brand-deep), var(--brand)); color: #fff; }
.category-card.featured p, .category-card.featured .text-link { color: rgba(255,255,255,.9); }
.category-card.wide { grid-column: span 2; background: linear-gradient(145deg, #fff, var(--brand-soft)); }
.category-card p { margin: 12px 0 24px; }
.category-card .text-link { margin-top: auto; }
.category-icon { width: 42px; height: 42px; margin-bottom: 28px; display: grid; place-items: center; border-radius: 14px; background: var(--brand-soft); color: var(--brand-deep); font-weight: 900; }
.category-card.featured .category-icon { background: rgba(255,255,255,.16); color: #fff; }

.split-feature { display: grid; grid-template-columns: .9fr 1.1fr; gap: 52px; align-items: center; padding: 36px; border-radius: var(--radius-lg); background: var(--brand-soft); }
.split-feature.reverse { grid-template-columns: 1.1fr .9fr; }
.split-feature.reverse .feature-media { order: 2; }
.feature-media { min-height: 420px; display: grid; place-items: center; padding: 22px; background: rgba(255,255,255,.72); border-radius: 24px; }
.feature-media img { max-height: 400px; object-fit: contain; }
.feature-panel { padding: 16px; }
.feature-panel p { margin-top: 16px; }
.check-list { display: grid; gap: 11px; padding: 0; margin: 24px 0 0; list-style: none; }
.check-list li { position: relative; padding-left: 30px; color: var(--body); }
.check-list li::before { content: '✓'; position: absolute; left: 0; top: 1px; width: 20px; height: 20px; display: grid; place-items: center; border-radius: 50%; background: var(--brand-soft); color: var(--brand-deep); font-size: .75rem; font-weight: 900; }
.section-dark .check-list li { color: rgba(255,255,255,.9); }
.section-dark .check-list li::before { background: rgba(255,255,255,.16); color: #fff; }

.dual-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.topic-panel { padding: 34px; border: 1px solid var(--border); border-radius: 26px; background: #fff; }
.topic-panel.offset { margin-top: 48px; }
.topic-panel h2 { font-size: clamp(1.55rem,3vw,2.35rem); }
.topic-panel p { margin-top: 15px; }
.topic-panel.accent { background: linear-gradient(145deg, var(--brand-deep), var(--brand)); color: #fff; border: 0; }
.topic-panel.accent p, .topic-panel.accent .text-link { color: rgba(255,255,255,.86); }

.process { display: grid; grid-template-columns: repeat(6,1fr); gap: 14px; counter-reset: process; }
.process-step { position: relative; min-height: 245px; padding: 22px; border: 1px solid var(--border); border-radius: 20px; background: #fff; }
.process-step::before { counter-increment: process; content: counter(process, decimal-leading-zero); display: inline-flex; margin-bottom: 28px; color: var(--brand); font-size: 1.35rem; font-weight: 900; }
.process-step h3 { margin-bottom: 10px; }
.process-step p { font-size: .88rem; }
.process-step .text-link { font-size: .87rem; }

.timeline { display: grid; gap: 0; border-top: 1px solid var(--border); }
.timeline-item { display: grid; grid-template-columns: 140px 1fr auto; gap: 20px; align-items: center; padding: 24px 0; border-bottom: 1px solid var(--border); }
.timeline-item time { color: var(--brand-deep); font-weight: 800; }
.timeline-item p { margin: 4px 0 0; }

.quote-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.quote { padding: 26px; border-radius: 20px; background: var(--muted-bg); }
.quote p { margin: 0; }
.quote span { display: block; margin-top: 18px; color: var(--brand-deep); font-weight: 800; }

.faq-list { display: grid; gap: 12px; }
.faq-item { border: 1px solid var(--border); border-radius: 18px; background: #fff; overflow: hidden; }
.faq-question { width: 100%; min-height: 64px; padding: 15px 20px; display: flex; justify-content: space-between; align-items: center; gap: 16px; border: 0; background: #fff; color: var(--text); font-weight: 850; text-align: left; cursor: pointer; }
.faq-question:hover { background: var(--muted-bg); }
.faq-answer { padding: 0 20px 20px; }
.faq-answer p { margin: 0; }
.faq-icon { flex: 0 0 auto; color: var(--brand); font-size: 1.35rem; }

.download-cta { padding: 56px; text-align: center; border-radius: 30px; background: radial-gradient(circle at top, rgba(255,255,255,.18), transparent 40%), linear-gradient(135deg, var(--brand-deep), var(--brand)); color: #fff; }
.download-cta p { max-width: 720px; margin: 18px auto 0; color: rgba(255,255,255,.84); }
.download-cta .download-btn { margin-top: 28px; background: #fff; color: var(--brand-deep); box-shadow: none; }

.page-hero { padding: 78px 0 62px; background: radial-gradient(circle at 80% 20%, rgba(41,128,254,.2), transparent 30%), linear-gradient(180deg, #fff, var(--canvas)); }
.page-hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 46px; align-items: center; }
.page-hero h1 { font-size: clamp(2.4rem,5vw,4.5rem); }
.page-hero p { max-width: 700px; margin-top: 20px; font-size: 1.05rem; }
.page-hero-visual { min-height: 360px; display: grid; place-items: center; padding: 28px; border: 1px solid rgba(220,230,242,.8); border-radius: 28px; background: rgba(255,255,255,.72); box-shadow: var(--shadow); }
.page-hero-visual img { max-height: 350px; object-fit: contain; }
.pill-row { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 22px; }
.pill-row span { padding: 7px 12px; border-radius: 999px; color: var(--brand-deep); background: var(--brand-soft); font-weight: 750; font-size: .86rem; }
.content-grid { display: grid; grid-template-columns: minmax(0,1.1fr) minmax(280px,.9fr); gap: 28px; align-items: start; }
.content-card { padding: 32px; border: 1px solid var(--border); border-radius: 24px; background: #fff; }
.content-card h2 { font-size: clamp(1.45rem,3vw,2.2rem); margin-bottom: 15px; }
.content-card h3 { margin: 24px 0 9px; }
.content-card p:last-child { margin-bottom: 0; }
.stack { display: grid; gap: 20px; }
.info-strip { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.info-strip article { padding: 24px; border-radius: 20px; background: var(--muted-bg); }
.info-strip h3 { margin-bottom: 8px; }
.data-table { width: 100%; border-collapse: collapse; border-radius: 18px; overflow: hidden; border: 1px solid var(--border); }
.data-table th, .data-table td { padding: 15px 16px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.data-table th { width: 30%; background: var(--brand-soft); }
.data-table tr:last-child th, .data-table tr:last-child td { border-bottom: 0; }
.notice { padding: 22px 24px; border-left: 4px solid var(--brand); border-radius: 0 18px 18px 0; background: var(--brand-soft); }
.notice strong { display: block; margin-bottom: 6px; }
.number-list { display: grid; gap: 16px; counter-reset: number; padding: 0; list-style: none; }
.number-list li { position: relative; min-height: 48px; padding-left: 58px; }
.number-list li::before { counter-increment: number; content: counter(number); position: absolute; left: 0; top: 0; width: 40px; height: 40px; display: grid; place-items: center; border-radius: 13px; color: #fff; background: var(--brand); font-weight: 900; }

.site-footer { padding-top: 74px; color: #fff; background: var(--footer); }
.footer-shell { width: var(--container); margin: 0 auto; display: grid; grid-template-columns: 1.05fr 1.95fr; gap: 58px; }
.footer-brand img { width: 168px; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 420px; margin: 18px 0 24px; color: rgba(255,255,255,.68); }
.footer-links { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.footer-links h2 { margin-bottom: 15px; font-size: 1rem; }
.footer-links a { display: block; padding: 5px 0; color: rgba(255,255,255,.68); font-size: .9rem; }
.footer-links a:hover { color: #fff; }
.footer-bottom { width: var(--container); margin: 54px auto 0; padding: 22px 0 28px; border-top: 1px solid rgba(255,255,255,.1); }
.footer-bottom p { margin: 0; color: rgba(255,255,255,.55); font-size: .85rem; }

@media (max-width: 1080px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: flex; }
  .hero-grid, .page-hero-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .process { grid-template-columns: repeat(3,1fr); }
  .footer-shell { grid-template-columns: 1fr; }
}

@media (max-width: 820px) {
  :root { --container: min(100% - 30px, 720px); }
  .section { padding: 72px 0; }
  .hero { padding-top: 56px; }
  .hero-grid, .page-hero-grid, .split-feature, .split-feature.reverse, .content-grid { grid-template-columns: 1fr; }
  .hero-copy { text-align: left; }
  .hero-visual { min-height: 430px; }
  .split-feature.reverse .feature-media { order: 0; }
  .capability-grid { grid-template-columns: repeat(2,1fr); }
  .capability-item:nth-child(3) { border-left: 0; border-top: 1px solid var(--border); }
  .capability-item:nth-child(4) { border-top: 1px solid var(--border); }
  .category-grid { grid-template-columns: repeat(2,1fr); }
  .category-card.featured, .category-card.wide { grid-column: span 2; }
  .quote-grid { grid-template-columns: repeat(2,1fr); }
  .info-strip { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 560px) {
  :root { --container: calc(100% - 24px); }
  h1 { font-size: 2.55rem; }
  .header-shell { min-height: 68px; gap: 8px; }
  .brand img { width: 126px; }
  .header-actions { gap: 6px; }
  .download-btn.compact { min-height: 42px; padding: 0 14px; font-size: .86rem; }
  .menu-toggle { width: 42px; height: 42px; }
  .hero { padding: 44px 0 32px; }
  .hero-grid, .page-hero-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 380px; }
  .float-note { max-width: 145px; padding: 10px 12px; font-size: .76rem; }
  .float-note.one { left: 0; top: 12%; }
  .float-note.two { right: 0; top: 42%; }
  .float-note.three { left: 2%; bottom: 5%; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-item + .capability-item { border-left: 0; border-top: 1px solid var(--border); }
  .category-grid { grid-template-columns: 1fr; }
  .category-card.featured, .category-card.wide { grid-column: span 1; }
  .split-feature { padding: 18px; gap: 24px; }
  .feature-media { min-height: 310px; }
  .dual-grid { grid-template-columns: 1fr; }
  .topic-panel.offset { margin-top: 0; }
  .process { grid-template-columns: 1fr; }
  .process-step { min-height: 0; }
  .timeline-item { grid-template-columns: 1fr; gap: 6px; }
  .quote-grid { grid-template-columns: 1fr; }
  .download-cta { padding: 38px 20px; }
  .page-hero { padding: 50px 0 42px; }
  .page-hero-visual { min-height: 290px; }
  .content-card { padding: 24px; }
  .data-table th, .data-table td { display: block; width: 100%; }
  .data-table th { border-bottom: 0; }
  .footer-links { grid-template-columns: 1fr 1fr; gap: 26px 16px; }
}