:root {
  --blue: #2980FE;
  --blue-deep: #1767D6;
  --blue-soft: #EAF3FF;
  --blue-pale: #F5F8FD;
  --gray: #F7F9FC;
  --white: #FFFFFF;
  --text: #172033;
  --body: #465266;
  --muted: #718096;
  --border: #DCE6F2;
  --footer: #10233F;
  --shadow: 0 18px 50px rgba(29, 80, 145, .10);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --page: min(1180px, calc(100% - 40px));
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--text); background: var(--white); font-family: Arial, "PingFang TC", "Microsoft JhengHei", 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, input, textarea, select { font: inherit; }
button { color: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 9999; padding: 10px 16px; border-radius: 12px; background: var(--text); color: white; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 1000; border-bottom: 1px solid rgba(220,230,242,.8); background: rgba(255,255,255,.94); backdrop-filter: blur(14px); }
.nav-shell { width: min(1280px, calc(100% - 32px)); min-height: 76px; margin: auto; display: flex; align-items: center; gap: 26px; }
.brand { display: inline-flex; flex: 0 0 auto; align-items: center; }
.brand img { width: 170px; height: auto; }
.desktop-nav { flex: 1; display: flex; align-items: stretch; justify-content: center; gap: 2px; min-width: 0; }
.nav-link { min-height: 76px; display: inline-flex; align-items: center; padding: 0 12px; border-bottom: 2px solid transparent; color: #33415c; font-size: 14px; font-weight: 700; white-space: nowrap; }
.nav-link:hover, .nav-link:focus-visible, .nav-link.is-active { color: var(--blue); border-bottom-color: var(--blue); }
.nav-group { position: relative; display: flex; align-items: stretch; }
.mega-menu { position: absolute; top: calc(100% - 6px); left: -40px; width: 680px; display: grid; grid-template-columns: 1.15fr 1fr 1fr; gap: 10px; padding: 18px; border: 1px solid var(--border); border-radius: 22px; background: white; box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(10px); transition: .2s ease; }
.mega-menu-right { left: auto; right: -120px; }
.nav-group:hover .mega-menu, .nav-group:focus-within .mega-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-menu a, .mega-intro { min-height: 86px; padding: 14px; border-radius: 16px; }
.mega-menu a { border: 1px solid transparent; background: var(--gray); }
.mega-menu a:hover, .mega-menu a:focus-visible { border-color: #b9d7ff; background: var(--blue-soft); }
.mega-menu strong { display: block; margin-bottom: 3px; font-size: 15px; }
.mega-menu span { display: block; color: var(--muted); font-size: 12px; line-height: 1.5; }
.mega-intro { grid-row: span 2; background: linear-gradient(145deg, var(--blue), var(--blue-deep)); color: white; }
.mega-intro strong { font-size: 20px; }
.mega-intro span { color: rgba(255,255,255,.82); font-size: 13px; }
.nav-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.download-btn, .primary-btn, .secondary-btn, .text-btn { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; border-radius: 14px; font-weight: 800; transition: .2s ease; }
.download-btn, .primary-btn { padding: 0 22px; background: var(--blue); color: white; box-shadow: 0 12px 24px rgba(41,128,254,.22); }
.download-btn:hover, .primary-btn:hover { background: var(--blue-deep); transform: translateY(-1px); }
.secondary-btn { padding: 0 22px; border: 1px solid #bdd8fb; background: white; color: var(--blue-deep); }
.secondary-btn:hover { border-color: var(--blue); background: var(--blue-soft); }
.text-btn { min-height: auto; justify-content: flex-start; color: var(--blue-deep); }
.text-btn::after { content: "→"; margin-left: 7px; }
.menu-toggle { width: 48px; height: 48px; border: 1px solid var(--border); border-radius: 14px; background: white; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px; cursor: pointer; }
.menu-toggle span { width: 20px; height: 2px; background: var(--text); border-radius: 3px; }
.menu-overlay { position: fixed; inset: 0; z-index: 1090; background: rgba(12,28,54,.45); opacity: 0; transition: opacity .22s ease; }
.menu-overlay.is-visible { opacity: 1; }
.mobile-menu { position: fixed; top: 0; right: 0; bottom: 0; z-index: 1100; width: min(440px, 94vw); 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; display: flex; align-items: center; justify-content: space-between; padding: 12px 18px; border-bottom: 1px solid var(--border); }
.menu-close { width: 48px; height: 48px; border: 0; border-radius: 14px; background: var(--gray); font-size: 30px; cursor: pointer; }
.mobile-menu-body { flex: 1; overflow-y: auto; padding: 16px 20px; }
.mobile-home, .mobile-menu summary { min-height: 52px; display: flex; align-items: center; padding: 0 4px; border-bottom: 1px solid var(--border); font-weight: 800; cursor: pointer; }
.mobile-menu details > div { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 10px 0 16px; }
.mobile-menu details a { min-height: 46px; display: flex; align-items: center; padding: 8px 12px; border-radius: 12px; background: var(--blue-pale); color: #29425f; font-size: 14px; }
.mobile-menu-foot { padding: 18px 20px calc(18px + env(safe-area-inset-bottom)); border-top: 1px solid var(--border); }
.mobile-menu-foot .download-btn { width: 100%; }
main { display: block; }
.container { width: var(--page); margin-inline: auto; }
.section { padding: 92px 0; }
.section-sm { padding: 68px 0; }
.section-soft { background: var(--blue-pale); }
.section-gray { background: var(--gray); }
.section-dark { color: white; background: linear-gradient(135deg, #10233F, #1767D6); }
.section-head { max-width: 760px; margin-bottom: 38px; }
.section-head.center { margin-inline: auto; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 14px; color: var(--blue-deep); font-size: 13px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--blue); }
.section-dark .eyebrow { color: #bcd9ff; }
h1, h2, h3 { margin: 0 0 16px; line-height: 1.22; letter-spacing: -.02em; }
h1 { font-size: clamp(42px, 6vw, 72px); }
h2 { font-size: clamp(30px, 4vw, 46px); }
h3 { font-size: clamp(20px, 2vw, 26px); }
p { margin: 0 0 16px; color: var(--body); }
.section-dark p { color: rgba(255,255,255,.78); }
.lead { font-size: clamp(18px, 2vw, 22px); color: #33415c; }
.hero { position: relative; overflow: hidden; padding: 74px 0 60px; background: radial-gradient(circle at 85% 15%, rgba(41,128,254,.18), transparent 30%), linear-gradient(180deg, #ffffff 0%, #f5f9ff 100%); }
.hero::after { content: ""; position: absolute; left: -80px; bottom: -140px; width: 340px; height: 340px; border-radius: 50%; border: 60px solid rgba(41,128,254,.05); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.18fr .82fr; gap: 58px; align-items: center; }
.hero-copy { max-width: 680px; }
.hero-copy h1 span { color: var(--blue); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0; }
.tag-list { display: flex; flex-wrap: wrap; gap: 10px; }
.tag { padding: 8px 12px; border: 1px solid #c9dfff; border-radius: 999px; background: rgba(255,255,255,.72); color: #335a86; font-size: 13px; font-weight: 800; }
.hero-visual { position: relative; min-height: 520px; display: flex; align-items: center; justify-content: center; }
.hero-visual::before { content: ""; position: absolute; inset: 10% 5%; border-radius: 50%; background: linear-gradient(145deg, rgba(41,128,254,.18), rgba(255,255,255,.2)); filter: blur(2px); }
.hero-visual > img { position: relative; z-index: 2; max-height: 520px; object-fit: contain; filter: drop-shadow(0 30px 34px rgba(20,74,140,.17)); }
.float-note { position: absolute; z-index: 3; min-width: 155px; padding: 12px 14px; border: 1px solid rgba(255,255,255,.9); border-radius: 16px; background: rgba(255,255,255,.88); box-shadow: var(--shadow); color: #2b486c; font-size: 13px; font-weight: 800; backdrop-filter: blur(10px); }
.float-note.one { top: 13%; left: 0; }
.float-note.two { top: 44%; right: -2%; }
.float-note.three { bottom: 11%; left: 2%; }
.capability-strip { position: relative; z-index: 4; width: var(--page); margin: -20px auto 0; display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--border); border-radius: 24px; background: white; box-shadow: var(--shadow); overflow: hidden; }
.capability-strip article { padding: 25px; border-right: 1px solid var(--border); }
.capability-strip article:last-child { border-right: 0; }
.capability-strip h2 { margin-bottom: 7px; font-size: 19px; }
.capability-strip p { margin: 0; font-size: 14px; }
.category-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.category-card { min-height: 220px; display: flex; flex-direction: column; justify-content: space-between; padding: 28px; border: 1px solid var(--border); border-radius: 24px; background: white; transition: .2s ease; }
.category-card:hover { transform: translateY(-3px); border-color: #b7d6ff; box-shadow: var(--shadow); }
.category-card.wide { grid-column: span 2; background: linear-gradient(135deg, #eef6ff, #ffffff); }
.category-card h3 { font-size: 23px; }
.category-card p { font-size: 15px; }
.category-card .number { color: #a2c6f8; font-size: 13px; font-weight: 900; }
.split-feature { display: grid; grid-template-columns: .9fr 1.1fr; gap: 64px; align-items: center; }
.split-feature.reverse { grid-template-columns: 1.1fr .9fr; }
.split-feature.reverse .feature-media { order: 2; }
.feature-media { min-height: 500px; display: flex; align-items: center; justify-content: center; padding: 30px; border-radius: 30px; background: linear-gradient(145deg, #eaf3ff, #ffffff); }
.feature-media img { max-height: 460px; object-fit: contain; }
.feature-panel { padding: 38px; border: 1px solid var(--border); border-radius: 26px; background: white; box-shadow: var(--shadow); }
.check-list, .plain-list { list-style: none; padding: 0; margin: 24px 0; }
.check-list li, .plain-list li { position: relative; padding: 12px 0 12px 34px; border-bottom: 1px solid var(--border); color: var(--body); }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 12px; width: 22px; height: 22px; display: grid; place-items: center; border-radius: 50%; background: var(--blue-soft); color: var(--blue-deep); font-size: 12px; font-weight: 900; }
.plain-list li::before { content: ""; position: absolute; left: 3px; top: 22px; width: 8px; height: 8px; border-radius: 50%; background: var(--blue); }
.dual-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: stretch; }
.topic-panel { padding: 38px; border: 1px solid var(--border); border-radius: 28px; background: white; }
.topic-panel.offset { margin-top: 54px; }
.topic-panel.blue { background: linear-gradient(145deg, #eff6ff, #fff); }
.topic-panel.dark { color: white; background: linear-gradient(145deg, #17345c, #1767d6); border-color: transparent; }
.topic-panel.dark p, .topic-panel.dark li { color: rgba(255,255,255,.78); }
.topic-panel.dark .text-btn { color: white; }
.media-topic { overflow: hidden; display: grid; grid-template-columns: 1.1fr .9fr; border: 1px solid var(--border); border-radius: 28px; background: white; }
.media-topic .copy { padding: 42px; }
.media-topic .image { min-height: 360px; display: flex; align-items: center; justify-content: center; padding: 30px; background: var(--blue-soft); }
.media-topic .image img { max-height: 330px; object-fit: contain; }
.security-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 28px; }
.security-main { padding: 46px; border-radius: 30px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.15); }
.security-notes { display: grid; gap: 14px; }
.security-note { padding: 22px; border-radius: 20px; background: rgba(255,255,255,.10); border: 1px solid rgba(255,255,255,.12); }
.security-note h3 { font-size: 19px; }
.process { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.process-step { position: relative; min-height: 260px; padding: 24px 20px; border: 1px solid var(--border); border-radius: 22px; background: white; }
.process-step .step-no { width: 42px; height: 42px; display: grid; place-items: center; margin-bottom: 28px; border-radius: 14px; background: var(--blue); color: white; font-weight: 900; }
.process-step h3 { font-size: 18px; }
.process-step p { font-size: 14px; }
.timeline { display: grid; gap: 0; border-left: 2px solid #cfe1fb; margin-left: 12px; padding-left: 30px; }
.timeline article { position: relative; padding: 0 0 28px; }
.timeline article::before { content: ""; position: absolute; left: -39px; top: 7px; width: 14px; height: 14px; border: 4px solid white; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 1px #bcd7fb; }
.timeline time { color: var(--blue-deep); font-size: 12px; font-weight: 900; }
.timeline h3 { margin: 5px 0 8px; font-size: 20px; }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.review { min-height: 220px; padding: 26px; border-radius: 22px; background: white; border: 1px solid var(--border); }
.review:nth-child(2n) { background: var(--blue-soft); }
.review p { font-size: 15px; }
.review span { color: var(--blue-deep); font-size: 13px; font-weight: 900; }
.faq-list { max-width: 900px; margin: auto; border-top: 1px solid var(--border); }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item > button { width: 100%; min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 16px 0; border: 0; background: transparent; text-align: left; font-weight: 800; cursor: pointer; }
.faq-item > button::after { content: "+"; flex: 0 0 34px; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; background: var(--blue-soft); color: var(--blue-deep); font-size: 22px; }
.faq-item.is-open > button::after { content: "−"; }
.faq-answer { padding: 0 54px 24px 0; }
.cta-box { position: relative; overflow: hidden; padding: 60px; border-radius: 32px; background: linear-gradient(135deg, #2980fe, #1767d6); color: white; text-align: center; }
.cta-box::before, .cta-box::after { content: ""; position: absolute; border-radius: 50%; border: 40px solid rgba(255,255,255,.08); }
.cta-box::before { width: 220px; height: 220px; left: -100px; bottom: -120px; }
.cta-box::after { width: 160px; height: 160px; right: -70px; top: -90px; }
.cta-box p { max-width: 700px; margin: 0 auto 24px; color: rgba(255,255,255,.82); }
.cta-box .download-btn { background: white; color: var(--blue-deep); box-shadow: none; }
.inner-hero { position: relative; overflow: hidden; padding: 88px 0 72px; background: linear-gradient(180deg, #fff, #f3f8ff); }
.inner-hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.inner-hero h1 { font-size: clamp(40px, 5vw, 66px); }
.inner-hero-card { min-height: 320px; display: flex; flex-direction: column; justify-content: flex-end; padding: 34px; border-radius: 28px; background: linear-gradient(145deg, #1767d6, #2980fe); color: white; box-shadow: var(--shadow); }
.inner-hero-card p { color: rgba(255,255,255,.78); }
.inner-hero-card .mini-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 20px; }
.inner-hero-card .mini-grid span { padding: 11px 12px; border-radius: 12px; background: rgba(255,255,255,.12); font-size: 13px; font-weight: 800; }
.content-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.info-card { padding: 30px; border: 1px solid var(--border); border-radius: 22px; background: white; }
.info-card h3 { font-size: 21px; }
.info-card p { font-size: 15px; }
.number-card { counter-increment: item; position: relative; padding-top: 72px; }
.number-card::before { content: counter(item, decimal-leading-zero); position: absolute; top: 22px; left: 30px; color: #9fc5fa; font-weight: 900; }
.steps-grid { counter-reset: step; display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.step-card { counter-increment: step; padding: 28px; border-radius: 22px; background: var(--gray); }
.step-card::before { content: counter(step); width: 38px; height: 38px; display: grid; place-items: center; margin-bottom: 18px; border-radius: 12px; background: var(--blue); color: white; font-weight: 900; }
.comparison { width: 100%; border-collapse: collapse; border: 1px solid var(--border); border-radius: 20px; overflow: hidden; background: white; }
.comparison th, .comparison td { padding: 16px 18px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.comparison th { background: var(--blue-soft); color: #274b76; }
.comparison tr:last-child td { border-bottom: 0; }
.notice { padding: 26px; border-left: 4px solid var(--blue); border-radius: 0 18px 18px 0; background: var(--blue-soft); }
.notice strong { display: block; margin-bottom: 8px; }
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.contact-card { padding: 32px; border-radius: 24px; background: var(--gray); }
.site-footer { padding: 68px 0 24px; background: var(--footer); color: white; }
.footer-grid { width: var(--page); margin: auto; display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 44px; }
.footer-brand p { max-width: 360px; color: rgba(255,255,255,.64); }
.footer-logo { display: inline-flex; margin-bottom: 18px; padding: 8px 12px; border-radius: 12px; background: white; }
.footer-grid h2 { margin-bottom: 14px; font-size: 16px; }
.footer-grid > div:not(.footer-brand) { display: flex; flex-direction: column; align-items: flex-start; }
.footer-grid a { min-height: 34px; color: rgba(255,255,255,.66); font-size: 14px; }
.footer-grid a:hover { color: white; }
.footer-bottom { width: var(--page); margin: 42px auto 0; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); display: flex; justify-content: space-between; gap: 20px; color: rgba(255,255,255,.48); font-size: 13px; }
.footer-bottom span:last-child { display: flex; gap: 20px; }
.footer-bottom a { color: rgba(255,255,255,.65); }
@media (max-width: 1120px) {
  .desktop-nav { display: none; }
  .nav-shell { justify-content: space-between; }
  .hero-grid, .inner-hero-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .process { grid-template-columns: repeat(3, 1fr); }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .category-card.wide { grid-column: span 1; }
  .footer-grid { grid-template-columns: 1.4fr repeat(3, 1fr); gap: 28px; }
}
@media (max-width: 820px) {
  :root { --page: min(100% - 28px, 720px); }
  .section { padding: 68px 0; }
  .hero { padding-top: 48px; }
  .hero-grid, .inner-hero-grid, .split-feature, .split-feature.reverse, .media-topic, .security-grid { grid-template-columns: 1fr; }
  .split-feature.reverse .feature-media { order: 0; }
  .hero-visual { min-height: 420px; }
  .hero-visual > img { max-height: 420px; }
  .float-note { min-width: 135px; font-size: 12px; }
  .capability-strip { grid-template-columns: 1fr 1fr; margin-top: 0; }
  .capability-strip article:nth-child(2) { border-right: 0; }
  .capability-strip article:nth-child(-n+2) { border-bottom: 1px solid var(--border); }
  .dual-grid, .review-grid, .content-grid-3, .contact-grid { grid-template-columns: 1fr 1fr; }
  .topic-panel.offset { margin-top: 0; }
  .feature-media { min-height: 380px; }
  .process { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: span 2; }
}
@media (max-width: 560px) {
  :root { --page: calc(100% - 24px); }
  .nav-shell { min-height: 68px; width: calc(100% - 20px); gap: 8px; }
  .brand img { width: 132px; }
  .nav-actions .download-btn { min-height: 44px; padding: 0 14px; font-size: 13px; }
  .menu-toggle { width: 44px; height: 44px; }
  h1 { font-size: 40px; }
  h2 { font-size: 31px; }
  .section { padding: 58px 0; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .hero-actions a { width: 100%; }
  .hero-visual { min-height: 370px; }
  .hero-visual > img { max-height: 340px; }
  .float-note.one { top: 4%; left: 0; }
  .float-note.two { top: 45%; right: 0; }
  .float-note.three { bottom: 1%; left: 4%; }
  .capability-strip, .category-grid, .dual-grid, .review-grid, .content-grid-3, .contact-grid, .steps-grid, .process { grid-template-columns: 1fr; }
  .capability-strip article { border-right: 0; border-bottom: 1px solid var(--border); }
  .capability-strip article:last-child { border-bottom: 0; }
  .category-card, .process-step { min-height: auto; }
  .feature-panel, .topic-panel, .security-main, .media-topic .copy, .cta-box { padding: 28px 22px; }
  .feature-media { min-height: 320px; padding: 18px; }
  .media-topic .image { min-height: 300px; }
  .inner-hero { padding: 58px 0; }
  .inner-hero-card { min-height: 280px; }
  .comparison { display: block; overflow-x: auto; white-space: normal; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
  .mobile-menu details > div { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}