:root {
  --blue: #2980FE;
  --blue-deep: #1767D6;
  --blue-soft: #EAF3FF;
  --blue-pale: #F5F8FD;
  --grey-soft: #F7F9FC;
  --white: #FFFFFF;
  --text: #172033;
  --body: #465266;
  --muted: #718096;
  --line: #DCE6F2;
  --footer: #10233F;
  --shadow: 0 18px 48px rgba(35, 79, 135, .11);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body { margin: 0; color: var(--text); background: var(--white); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft JhengHei", "PingFang TC", Arial, sans-serif; line-height: 1.72; overflow-x: hidden; }
body.menu-open, html.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
.skip-link { position: fixed; left: 14px; top: -60px; z-index: 9999; padding: 10px 16px; border-radius: 10px; background: var(--text); color: #fff; }
.skip-link:focus { top: 12px; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.narrow { width: min(calc(100% - 40px), 860px); margin-inline: auto; }
.section { padding: 92px 0; }
.section-sm { padding: 62px 0; }
.section-blue { background: var(--blue-pale); }
.section-soft { background: var(--grey-soft); }
.section-dark { color: #fff; background: linear-gradient(135deg, var(--footer), #174477 72%, #1c5ea3); }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 14px; color: var(--blue-deep); font-weight: 800; font-size: .86rem; letter-spacing: .08em; text-transform: uppercase; }
.eyebrow::before { width: 22px; height: 3px; border-radius: 999px; background: var(--blue); content: ""; }
.section-dark .eyebrow { color: #bcd8ff; }
.section-dark .eyebrow::before { background: #8fc0ff; }
h1, h2, h3 { margin: 0 0 18px; line-height: 1.18; letter-spacing: -.025em; }
h1 { font-size: clamp(2.5rem, 5.2vw, 5.1rem); }
h2 { font-size: clamp(2rem, 3.6vw, 3.3rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 18px; color: var(--body); }
.section-dark p { color: rgba(255,255,255,.78); }
.lead { max-width: 760px; font-size: clamp(1.05rem, 1.6vw, 1.26rem); color: #40516b; }
.section-dark .lead { color: rgba(255,255,255,.82); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 42px; }
.section-heading > div { max-width: 780px; }
.text-link { display: inline-flex; align-items: center; gap: 8px; color: var(--blue-deep); font-weight: 800; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.btn, .download-btn { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 12px 22px; border: 1px solid transparent; border-radius: 14px; background: var(--blue); color: #fff; font-weight: 800; line-height: 1.25; box-shadow: 0 10px 24px rgba(41,128,254,.22); transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
.btn:hover, .download-btn:hover { transform: translateY(-2px); background: var(--blue-deep); box-shadow: 0 14px 28px rgba(41,128,254,.28); }
.btn-secondary { background: #fff; color: var(--text); border-color: var(--line); box-shadow: none; }
.btn-secondary:hover { background: var(--blue-soft); color: var(--blue-deep); }
.btn-ghost { background: transparent; color: var(--blue-deep); border-color: #b9d6ff; box-shadow: none; }
.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(18px); }
.header-inner { width: min(calc(100% - 32px), 1280px); min-height: 78px; margin: auto; display: grid; grid-template-columns: 180px minmax(0,1fr) auto; align-items: center; gap: 22px; }
.brand { display: inline-flex; align-items: center; min-height: 44px; }
.brand img { max-height: 44px; width: auto; object-fit: contain; }
.desktop-nav { min-width: 0; display: flex; align-items: center; justify-content: center; gap: 2px; white-space: nowrap; }
.nav-direct, .nav-trigger { min-height: 44px; display: inline-flex; align-items: center; padding: 10px 11px; border: 0; border-radius: 10px; background: transparent; color: #33425a; font-size: .93rem; font-weight: 750; cursor: pointer; }
.nav-direct:hover, .nav-trigger:hover, .nav-direct.is-active, .nav-cluster.is-active .nav-trigger { color: var(--blue-deep); background: var(--blue-soft); }
.nav-cluster { position: relative; }
.nav-trigger::after { margin-left: 6px; font-size: .7rem; content: "⌄"; }
.mega-menu { position: absolute; top: calc(100% + 13px); left: 50%; width: 680px; padding: 20px; display: grid; grid-template-columns: 1.1fr repeat(2, 1fr); gap: 10px; border: 1px solid var(--line); border-radius: 22px; background: #fff; box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translate(-50%, 10px); transition: .18s ease; }
.mega-menu::before { position: absolute; top: -14px; left: 0; right: 0; height: 16px; content: ""; }
.nav-cluster:hover .mega-menu, .nav-cluster:focus-within .mega-menu, .nav-cluster.menu-opened .mega-menu { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.mega-menu a, .mega-intro { padding: 14px; border-radius: 14px; }
.mega-menu a { display: flex; flex-direction: column; gap: 4px; }
.mega-menu a:hover, .mega-menu a:focus { background: var(--blue-soft); outline: none; }
.mega-menu strong { color: var(--text); font-size: .96rem; }
.mega-menu span { color: var(--muted); font-size: .82rem; line-height: 1.45; white-space: normal; }
.mega-intro { grid-row: span 2; color: #fff; background: linear-gradient(145deg, var(--blue), var(--blue-deep)); }
.mega-intro strong { display: block; margin-bottom: 8px; color: #fff; font-size: 1.1rem; }
.mega-intro span { color: rgba(255,255,255,.8); }
.compact-menu { width: 620px; }
.small-menu { width: 530px; grid-template-columns: 1.1fr 1fr; }
.menu-right { left: auto; right: 0; transform: translate(0, 10px); }
.nav-cluster:hover .menu-right, .nav-cluster:focus-within .menu-right, .nav-cluster.menu-opened .menu-right { transform: translate(0, 0); }
.header-actions { display: flex; align-items: center; gap: 9px; }
.header-download { min-height: 42px; padding: 10px 17px; border-radius: 12px; font-size: .9rem; }
.menu-toggle { width: 44px; height: 44px; display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; border: 1px solid var(--line); border-radius: 12px; background: #fff; cursor: pointer; }
.menu-toggle span { width: 19px; height: 2px; border-radius: 9px; background: var(--text); }
.menu-overlay { position: fixed; inset: 0; z-index: 1090; background: rgba(15,32,55,.42); backdrop-filter: blur(4px); }
.mobile-menu { position: fixed; inset: 0 0 0 auto; z-index: 1100; width: min(92vw, 520px); display: flex; flex-direction: column; background: #fff; box-shadow: -20px 0 60px rgba(16,35,63,.22); transform: translateX(102%); transition: transform .25s ease; }
.mobile-menu.is-open { transform: translateX(0); }
.mobile-menu-head { min-height: 76px; padding: 14px 18px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.menu-close { width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 12px; background: #fff; font-size: 1.8rem; line-height: 1; cursor: pointer; }
.mobile-menu-body { flex: 1; overflow-y: auto; padding: 18px; }
.mobile-menu details { border-bottom: 1px solid var(--line); }
.mobile-menu summary, .mobile-home { min-height: 52px; display: flex; align-items: center; justify-content: space-between; font-weight: 800; cursor: pointer; }
.mobile-menu details div { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 0 0 15px; }
.mobile-menu details a { min-height: 44px; display: flex; align-items: center; padding: 9px 12px; border-radius: 10px; background: var(--grey-soft); color: var(--body); }
.mobile-menu-foot { padding: 16px 18px max(16px, env(safe-area-inset-bottom)); border-top: 1px solid var(--line); }
.mobile-menu-foot .download-btn { width: 100%; }
.hero { position: relative; overflow: hidden; padding: 88px 0 82px; background: radial-gradient(circle at 90% 15%, rgba(41,128,254,.20), transparent 34%), linear-gradient(180deg, #fff 0%, #f7fbff 100%); }
.hero::after { position: absolute; right: -140px; bottom: -180px; width: 430px; height: 430px; border: 1px solid rgba(41,128,254,.18); border-radius: 50%; content: ""; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.18fr .82fr; align-items: center; gap: 50px; }
.hero-copy h1 span { color: var(--blue); }
.hero-copy .lead { max-width: 700px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 25px; }
.tag { padding: 8px 12px; border: 1px solid #cfe2ff; border-radius: 999px; background: rgba(255,255,255,.8); color: #37506f; font-size: .86rem; font-weight: 700; }
.hero-visual { position: relative; min-height: 540px; display: grid; place-items: center; }
.hero-device { max-height: 510px; width: 100%; object-fit: contain; filter: drop-shadow(0 28px 45px rgba(27,75,132,.18)); }
.float-note { position: absolute; max-width: 190px; padding: 13px 15px; border: 1px solid rgba(220,230,242,.9); border-radius: 14px; background: rgba(255,255,255,.92); box-shadow: 0 16px 35px rgba(35,79,135,.12); font-size: .86rem; font-weight: 800; }
.float-note.one { top: 12%; left: -2%; }
.float-note.two { right: -3%; top: 44%; }
.float-note.three { left: 8%; bottom: 8%; }
.ability-strip { position: relative; z-index: 4; width: min(calc(100% - 40px), var(--container)); margin: -34px auto 0; display: grid; grid-template-columns: repeat(4,1fr); border: 1px solid var(--line); border-radius: 22px; background: #fff; box-shadow: var(--shadow); }
.ability-item { padding: 24px 25px; }
.ability-item + .ability-item { border-left: 1px solid var(--line); }
.ability-item strong { display: block; margin-bottom: 7px; color: var(--text); }
.ability-item p { margin: 0; font-size: .9rem; }
.category-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.category-card { min-height: 230px; padding: 26px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid var(--line); border-radius: 22px; background: #fff; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.category-card:hover { transform: translateY(-4px); border-color: #bcd7ff; box-shadow: var(--shadow); }
.category-card.featured { grid-column: span 2; min-height: 260px; background: linear-gradient(145deg, var(--blue), var(--blue-deep)); color: #fff; }
.category-card.featured p, .category-card.featured .text-link { color: rgba(255,255,255,.86); }
.category-card.wide { grid-column: span 2; }
.category-number { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 12px; background: var(--blue-soft); color: var(--blue-deep); font-weight: 900; }
.category-card.featured .category-number { background: rgba(255,255,255,.15); color: #fff; }
.split-feature { display: grid; grid-template-columns: .95fr 1.05fr; gap: 52px; align-items: center; }
.split-feature.reverse { grid-template-columns: 1.05fr .95fr; }
.media-panel { min-height: 520px; display: grid; place-items: center; padding: 34px; border-radius: var(--radius-lg); background: linear-gradient(145deg, #eaf3ff, #fff); overflow: hidden; }
.media-panel img { max-height: 450px; object-fit: contain; }
.content-panel { padding: 38px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow); }
.check-list, .plain-list { margin: 22px 0 0; padding: 0; list-style: none; }
.check-list li, .plain-list li { position: relative; margin: 0; padding: 11px 0 11px 34px; border-bottom: 1px solid var(--line); color: var(--body); }
.check-list li::before { position: absolute; left: 0; top: 12px; width: 22px; height: 22px; display: grid; place-items: center; border-radius: 7px; background: var(--blue-soft); color: var(--blue-deep); content: "✓"; font-size: .78rem; font-weight: 900; }
.dual-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 20px; }
.topic-card { padding: 38px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--line); }
.topic-card.blue { background: linear-gradient(145deg, #eaf3ff, #f8fbff); }
.topic-card.deep { color: #fff; background: linear-gradient(145deg, var(--footer), #1f5c9e); }
.topic-card.deep p, .topic-card.deep li { color: rgba(255,255,255,.78); }
.topic-card img { width: 100%; max-height: 290px; margin-bottom: 25px; object-fit: contain; }
.safety-grid { display: grid; grid-template-columns: .92fr 1.08fr; gap: 38px; align-items: center; }
.safety-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 24px; }
.safety-list div { padding: 16px; border: 1px solid rgba(255,255,255,.17); border-radius: 14px; background: rgba(255,255,255,.07); }
.process { display: grid; grid-template-columns: repeat(6,1fr); gap: 12px; }
.step { position: relative; min-height: 240px; padding: 22px 18px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.step-number { width: 40px; height: 40px; margin-bottom: 22px; display: grid; place-items: center; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 900; }
.step p { font-size: .9rem; }
.timeline { display: grid; gap: 0; border: 1px solid var(--line); border-radius: 22px; overflow: hidden; background: #fff; }
.timeline-item { display: grid; grid-template-columns: 150px 1fr auto; align-items: center; gap: 22px; padding: 23px 26px; }
.timeline-item + .timeline-item { border-top: 1px solid var(--line); }
.timeline-item time { color: var(--blue-deep); font-size: .85rem; font-weight: 800; }
.timeline-item h3 { margin: 0 0 5px; }
.timeline-item p { margin: 0; font-size: .92rem; }
.review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.review { padding: 25px; border-radius: 18px; background: #fff; border: 1px solid var(--line); }
.review::before { display: block; margin-bottom: 14px; color: var(--blue); content: "“"; font-size: 3rem; font-weight: 900; line-height: .6; }
.review p { margin: 0; }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item button { width: 100%; min-height: 68px; padding: 17px 4px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border: 0; background: transparent; text-align: left; font-weight: 850; cursor: pointer; }
.faq-item button::after { width: 30px; height: 30px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 10px; background: var(--blue-soft); color: var(--blue-deep); content: "+"; }
.faq-item.is-open button::after { content: "−"; }
.faq-answer { padding: 0 46px 20px 4px; }
.cta-panel { position: relative; overflow: hidden; padding: 64px 32px; border-radius: 30px; text-align: center; background: linear-gradient(135deg, var(--blue), var(--blue-deep)); color: #fff; }
.cta-panel::before, .cta-panel::after { position: absolute; border: 1px solid rgba(255,255,255,.2); border-radius: 50%; content: ""; }
.cta-panel::before { width: 260px; height: 260px; left: -120px; top: -120px; }
.cta-panel::after { width: 220px; height: 220px; right: -80px; bottom: -120px; }
.cta-panel h2, .cta-panel p, .cta-panel .button-row { position: relative; z-index: 1; }
.cta-panel p { max-width: 720px; margin-inline: auto; color: rgba(255,255,255,.82); }
.cta-panel .button-row { justify-content: center; }
.cta-panel .download-btn { background: #fff; color: var(--blue-deep); box-shadow: none; }
.page-hero { padding: 78px 0; background: radial-gradient(circle at 83% 15%, rgba(41,128,254,.18), transparent 32%), linear-gradient(180deg, #fff, var(--blue-pale)); }
.page-hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 45px; }
.page-hero h1 { font-size: clamp(2.5rem, 4.5vw, 4.4rem); }
.page-hero-media { min-height: 380px; display: grid; place-items: center; }
.page-hero-media img { max-height: 380px; object-fit: contain; filter: drop-shadow(0 26px 42px rgba(35,79,135,.18)); }
.info-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.info-card { padding: 27px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.info-card.highlight { background: var(--blue-soft); border-color: #c6dcff; }
.info-card h3 { margin-bottom: 10px; }
.info-card p:last-child { margin-bottom: 0; }
.numbered-list { counter-reset: item; display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.numbered-list li { position: relative; min-height: 70px; padding: 18px 20px 18px 70px; border: 1px solid var(--line); border-radius: 16px; background: #fff; color: var(--body); }
.numbered-list li::before { counter-increment: item; content: counter(item); position: absolute; left: 18px; top: 16px; width: 36px; height: 36px; display: grid; place-items: center; border-radius: 11px; background: var(--blue); color: #fff; font-weight: 900; }
.comparison { width: 100%; border-collapse: collapse; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; background: #fff; }
.comparison th, .comparison td { padding: 16px 18px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.comparison th { background: var(--blue-soft); color: var(--text); }
.comparison tr:last-child td { border-bottom: 0; }
.notice { padding: 22px 24px; border-left: 4px solid var(--blue); border-radius: 0 16px 16px 0; background: var(--blue-soft); color: var(--body); }
.notice strong { color: var(--text); }
.contact-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 18px; }
.policy article { padding: 0 0 30px; margin-bottom: 30px; border-bottom: 1px solid var(--line); }
.policy article:last-child { border-bottom: 0; }
.site-footer { color: #fff; background: var(--footer); }
.footer-main { width: min(calc(100% - 40px), var(--container)); margin: auto; padding: 70px 0 46px; display: grid; grid-template-columns: 1.5fr repeat(3,1fr); gap: 46px; }
.footer-brand img { max-height: 42px; margin-bottom: 20px; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 360px; color: rgba(255,255,255,.66); }
.footer-download { margin-top: 8px; }
.footer-links h2 { margin: 0 0 18px; font-size: 1rem; }
.footer-links a { display: block; padding: 5px 0; color: rgba(255,255,255,.66); font-size: .92rem; }
.footer-links a:hover { color: #fff; }
.footer-bottom { width: min(calc(100% - 40px), var(--container)); min-height: 70px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-top: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.55); font-size: .88rem; }
.footer-bottom div { display: flex; gap: 20px; }
@media (max-width: 1180px) {
  .desktop-nav { display: none; }
  .header-inner { grid-template-columns: 1fr auto; }
  .header-actions { justify-self: end; }
  .process { grid-template-columns: repeat(3,1fr); }
}
@media (max-width: 900px) {
  .section { padding: 72px 0; }
  .hero-grid, .page-hero-grid, .split-feature, .split-feature.reverse, .dual-grid, .safety-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 65px; }
  .hero-visual { min-height: 430px; }
  .hero-device { max-height: 400px; }
  .ability-strip { grid-template-columns: 1fr 1fr; }
  .ability-item:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .ability-item:nth-child(4) { border-top: 1px solid var(--line); }
  .category-grid { grid-template-columns: 1fr 1fr; }
  .category-card.featured, .category-card.wide { grid-column: span 2; }
  .media-panel { min-height: 420px; }
  .info-grid, .review-grid { grid-template-columns: 1fr 1fr; }
  .timeline-item { grid-template-columns: 110px 1fr; }
  .timeline-item .text-link { grid-column: 2; }
  .footer-main { grid-template-columns: 1.3fr 1fr 1fr; }
  .footer-links:last-child { grid-column: 2 / 4; display: grid; grid-template-columns: repeat(4,auto); align-content: start; gap: 8px 24px; }
  .footer-links:last-child h2 { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .container, .narrow { width: min(calc(100% - 28px), var(--container)); }
  .header-inner { width: calc(100% - 20px); min-height: 68px; gap: 8px; }
  .brand img { max-width: 126px; max-height: 36px; }
  .header-download { min-height: 42px; padding: 9px 13px; font-size: .82rem; }
  .menu-toggle { width: 42px; height: 42px; }
  .hero { padding: 52px 0 62px; }
  h1 { font-size: clamp(2.25rem, 12vw, 3.4rem); }
  h2 { font-size: clamp(1.85rem, 9vw, 2.6rem); }
  .hero-visual { min-height: 360px; }
  .hero-device { max-height: 330px; }
  .float-note { position: static; max-width: none; }
  .hero-visual { grid-template-columns: 1fr 1fr; gap: 8px; }
  .hero-device { grid-column: 1 / -1; }
  .float-note.three { grid-column: 1 / -1; }
  .ability-strip { width: calc(100% - 28px); margin-top: -24px; grid-template-columns: 1fr; }
  .ability-item + .ability-item, .ability-item:nth-child(3), .ability-item:nth-child(4) { border-left: 0; border-top: 1px solid var(--line); }
  .section-heading { align-items: start; flex-direction: column; }
  .category-grid, .info-grid, .review-grid, .contact-grid { grid-template-columns: 1fr; }
  .category-card.featured, .category-card.wide { grid-column: span 1; }
  .content-panel, .topic-card { padding: 25px; }
  .media-panel { min-height: 330px; padding: 20px; }
  .safety-list { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr; }
  .step { min-height: auto; }
  .timeline-item { grid-template-columns: 1fr; gap: 8px; padding: 20px; }
  .timeline-item .text-link { grid-column: 1; }
  .comparison { display: block; overflow-x: auto; white-space: nowrap; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 32px 22px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-links:last-child { grid-column: 1 / -1; display: block; }
  .footer-bottom { padding: 18px 0; flex-direction: column; align-items: flex-start; }
  .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; }
}