:root {
    --bg: #F5F7FF;
    --nav: rgba(12,18,40,0.94);
    --title: #131A35;
    --primary: #5B6CFF;
    --deep: #16213E;
    --cyan: #00D4FF;
    --gold: #FFC857;
    --rose: #D94F70;
    --lavender: #7A5CFF;
    --text: #1F2740;
    --muted: #66708A;
    --soft: #9AA4BA;
    --card: #FFFFFF;
    --dark-card: #11182F;
    --light-blue: #EFF8FF;
    --border: rgba(91,108,255,0.18);
    --shadow: 0 20px 46px rgba(25,43,91,0.14);
    --gradient: linear-gradient(135deg, #5B6CFF 0%, #7A5CFF 48%, #00D4FF 100%);
    --radius: 22px;
    --max: 1240px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}
body.drawer-open { overflow: hidden; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--lavender); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font: inherit; }
h1, h2, h3 { margin-top: 0; color: var(--title); line-height: 1.25; }
p { margin-top: 0; }
.container { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.skip-link { position: fixed; left: 12px; top: -80px; z-index: 12000; background: #fff; color: #111; padding: 10px 14px; border-radius: 10px; }
.skip-link:focus { top: 12px; }
.site-header {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 9999;
    background: var(--nav);
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 26px rgba(25,43,91,0.16);
}
.header-inner {
    width: min(calc(100% - 32px), 1280px);
    margin: 0 auto;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
}
.site-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; letter-spacing: .02em; white-space: nowrap; }
.site-logo:hover { color: #fff; }
.site-logo img { width: 42px; max-height: 44px; object-fit: contain; }
.nav-core { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.nav-core a { color: #EEF2FF; border-radius: 999px; padding: 8px 12px; font-size: 15px; white-space: nowrap; transition: .2s ease; }
.nav-core a:hover, .nav-core a.active { color: #fff; background: rgba(0,212,255,0.16); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.main-btn, .secondary-btn, .footer-cta {
    min-height: 46px;
    padding: 10px 20px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.main-btn { background: var(--gradient); color: #fff; box-shadow: 0 14px 32px rgba(91,108,255,.22); }
.main-btn:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 18px 34px rgba(91,108,255,.3); }
.secondary-btn { background: #fff; color: var(--primary); border: 1px solid var(--border); box-shadow: 0 10px 26px rgba(25,43,91,.08); }
.secondary-btn:hover { transform: translateY(-2px); background: #f7f8ff; }
.header-cta { min-height: 40px; padding: 8px 16px; font-size: 14px; }
.menu-toggle { width: 42px; height: 42px; border-radius: 13px; border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.08); display: inline-flex; flex-direction: column; gap: 5px; justify-content: center; align-items: center; cursor: pointer; }
.menu-toggle span { width: 18px; height: 2px; background: #fff; border-radius: 10px; }
.mobile-only { display: none; }
.drawer-overlay { position: fixed; inset: 0; z-index: 10000; background: rgba(4,8,22,.58); opacity: 0; visibility: hidden; transition: .25s ease; }
.site-drawer { position: fixed; top: 0; right: 0; z-index: 10001; width: min(390px, 88vw); height: 100vh; background: #fff; transform: translateX(102%); transition: transform .3s ease; padding: 22px; overflow-y: auto; box-shadow: -18px 0 50px rgba(7,13,36,.22); }
.drawer-open .drawer-overlay { opacity: 1; visibility: visible; }
.drawer-open .site-drawer { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.drawer-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--title); }
.drawer-brand img { width: 38px; height: 38px; object-fit: contain; }
.drawer-close { border: 0; background: #F0F3FF; color: var(--title); width: 40px; height: 40px; border-radius: 12px; cursor: pointer; font-size: 28px; line-height: 1; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding: 20px 0; }
.drawer-nav a { padding: 11px 13px; border-radius: 12px; background: #F7F8FF; color: var(--text); font-weight: 600; }
.drawer-nav a:hover { background: #EEF1FF; color: var(--primary); }
.drawer-note { background: linear-gradient(135deg,#EEF1FF,#EAFBFF); border: 1px solid var(--border); border-radius: 18px; padding: 18px; }
.drawer-note strong { color: var(--title); }
.drawer-note p { color: var(--muted); margin: 8px 0 0; font-size: 14px; }

.hero { position: relative; overflow: hidden; padding: 78px 0 58px; background: radial-gradient(circle at 10% 10%, rgba(122,92,255,.18), transparent 32%), radial-gradient(circle at 84% 22%, rgba(0,212,255,.2), transparent 28%), linear-gradient(145deg,#F8F4FF 0%,#EDF8FF 55%,#FFF8FC 100%); }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(4px); pointer-events: none; }
.hero::before { width: 230px; height: 230px; background: rgba(255,200,87,.14); left: -70px; bottom: -90px; }
.hero::after { width: 170px; height: 170px; background: rgba(217,79,112,.1); right: 5%; top: 8%; }
.hero-grid { display: grid; grid-template-columns: 1.04fr .96fr; gap: 56px; align-items: center; position: relative; z-index: 1; }
.eyebrow, .section-kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--lavender); font-weight: 800; letter-spacing: .08em; font-size: 13px; text-transform: uppercase; }
.eyebrow::before, .section-kicker::before { content: ""; width: 22px; height: 2px; border-radius: 2px; background: var(--gradient); }
.hero h1 { font-size: clamp(44px, 6vw, 78px); margin: 16px 0 12px; letter-spacing: -.045em; }
.hero-subtitle { font-size: clamp(22px, 2.4vw, 34px); color: var(--deep); font-weight: 800; margin-bottom: 18px; }
.hero-copy > p { color: var(--muted); font-size: 17px; max-width: 720px; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 20px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 20px 0 0; list-style: none; }
.hero-points li { background: rgba(255,255,255,.78); border: 1px solid rgba(91,108,255,.16); color: var(--deep); padding: 8px 13px; border-radius: 999px; font-weight: 700; font-size: 14px; }
.hero-visual { position: relative; }
.hero-visual > img { width: 100%; object-fit: contain; filter: drop-shadow(0 26px 38px rgba(25,43,91,.18)); }
.floating-card { position: absolute; background: rgba(255,255,255,.88); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: 18px; box-shadow: var(--shadow); padding: 14px 16px; max-width: 210px; }
.floating-card strong { display: block; color: var(--title); }
.floating-card span { color: var(--muted); font-size: 13px; }
.floating-one { left: -34px; bottom: 13%; }
.floating-two { right: -20px; top: 13%; }

.highlight-strip { position: relative; margin-top: -1px; padding: 0 0 36px; background: linear-gradient(180deg,#EFF8FF 0%,var(--bg) 100%); }
.highlight-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; transform: translateY(14px); }
.highlight-item { background: #fff; border: 1px solid var(--border); border-radius: 18px; padding: 20px; box-shadow: 0 14px 34px rgba(25,43,91,.1); }
.highlight-item h2 { font-size: 18px; margin-bottom: 8px; }
.highlight-item p { color: var(--muted); font-size: 14px; margin: 0; }
.channel-nav { padding: 44px 0 24px; }
.channel-wrap { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.channel-pill { max-width: 270px; background: #fff; border: 1px solid var(--border); border-radius: 999px; padding: 10px 15px; box-shadow: 0 8px 20px rgba(25,43,91,.07); display: inline-flex; gap: 8px; align-items: center; }
.channel-pill strong { color: var(--title); white-space: nowrap; }
.channel-pill span { color: var(--muted); font-size: 13px; }
.channel-pill:hover { transform: translateY(-1px); box-shadow: 0 12px 24px rgba(25,43,91,.12); }
.section { padding: 78px 0; }
.section-soft { background: linear-gradient(180deg,#F1F5FF 0%,#F9FBFF 100%); }
.section-deep { background: radial-gradient(circle at 80% 0%,rgba(0,212,255,.12),transparent 30%), #0F1730; color: #EAF0FF; }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-heading.center .section-kicker { justify-content: center; }
.section-heading h2 { font-size: clamp(30px, 4vw, 48px); margin: 12px 0; }
.section-heading p { color: var(--muted); font-size: 16px; }
.section-heading.light h2 { color: #fff; }
.section-heading.light p { color: #B9C4E5; }
.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center; }
.split-grid.reverse .content-media { order: 2; }
.content-media img, .zone-card img, .app-section img, .hero-visual img, .inner-hero-media img { max-width: 100%; height: auto; object-fit: contain; }
.content-media { background: linear-gradient(145deg,#EEF1FF,#EAFBFF); border-radius: 30px; padding: 28px; border: 1px solid var(--border); box-shadow: var(--shadow); }
.content-copy { padding: 18px 10px; }
.content-copy h2 { font-size: clamp(30px,3.5vw,46px); margin: 12px 0 16px; }
.content-copy p { color: var(--muted); }
.text-link { color: var(--primary); font-weight: 800; }
.mini-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; margin: 22px 0; }
.mini-list div { background: #fff; border: 1px solid var(--border); border-radius: 16px; padding: 14px; }
.mini-list strong { display: block; color: var(--title); }
.mini-list span { color: var(--muted); font-size: 13px; }
.card, .zone-card, .info-card, .review-card, .article-card, .side-note-card, .step-card { background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); border-radius: var(--radius); }
.dual-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.zone-card { overflow: hidden; }
.zone-card .card-image { background: linear-gradient(145deg,#F0F2FF,#EAFBFF); min-height: 260px; display: grid; place-items: center; padding: 18px; }
.zone-card .card-image img { max-height: 300px; }
.zone-card .card-body { padding: 26px; }
.zone-card h3 { font-size: 28px; margin: 8px 0 12px; }
.zone-card p { color: var(--muted); }
.point-list { padding: 0; list-style: none; display: grid; gap: 9px; }
.point-list li { position: relative; padding-left: 20px; color: var(--text); }
.point-list li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--gradient); position: absolute; left: 0; top: .7em; }
.triple-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.service-card { border-radius: 22px; overflow: hidden; background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); }
.service-card img { width: 100%; height: 230px; object-fit: contain; background: linear-gradient(145deg,#F5F1FF,#EAFBFF); padding: 16px; }
.service-card .card-body { padding: 24px; }
.service-card h3 { font-size: 24px; }
.service-card p { color: var(--muted); }
.security-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.security-card { padding: 30px; border-radius: 26px; border: 1px solid var(--border); box-shadow: var(--shadow); background: #fff; display: grid; grid-template-columns: .8fr 1.2fr; gap: 22px; align-items: center; }
.security-card img { max-height: 280px; margin: auto; }
.security-card h3 { font-size: 28px; }
.security-card p { color: var(--muted); }
.review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.review-grid.two { grid-template-columns: repeat(2,1fr); }
.review-card { padding: 24px; margin: 0; }
.review-card p { color: var(--text); font-size: 16px; }
.review-card footer { color: var(--primary); font-weight: 800; }
.dark-review { background: rgba(255,255,255,.07); border-color: rgba(255,255,255,.13); box-shadow: none; }
.dark-review p { color: #F3F6FF; }
.dark-review footer { color: var(--cyan); }
.faq-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 44px; align-items: start; }
.sticky-heading { position: sticky; top: 104px; }
.faq-list { display: grid; gap: 12px; }
details { background: #fff; border: 1px solid var(--border); border-radius: 18px; padding: 0 20px; box-shadow: 0 12px 30px rgba(25,43,91,.08); }
summary { cursor: pointer; font-weight: 800; color: var(--title); padding: 18px 34px 18px 0; position: relative; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: 14px; font-size: 24px; color: var(--primary); }
details[open] summary::after { content: "−"; }
details p { color: var(--muted); padding-bottom: 18px; margin: 0; }
.notice-card { background: linear-gradient(135deg,#182443,#11182F); border-radius: 30px; padding: 38px; color: #EEF2FF; display: grid; grid-template-columns: 1.3fr .7fr; gap: 28px; align-items: center; box-shadow: 0 26px 56px rgba(10,18,46,.24); }
.notice-card h2 { color: #fff; font-size: 34px; }
.notice-card p { color: #C7D1EB; }
.notice-links { display: flex; flex-direction: column; gap: 10px; }
.notice-links a { background: rgba(255,255,255,.08); color: #fff; border: 1px solid rgba(255,255,255,.15); border-radius: 14px; padding: 12px 14px; }
.about-summary { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; }
.about-summary img { background: linear-gradient(145deg,#F0F2FF,#EAFBFF); border-radius: 28px; padding: 22px; box-shadow: var(--shadow); }
.about-summary p { color: var(--muted); }

.inner-hero { position: relative; padding: 72px 0 66px; background: radial-gradient(circle at 12% 0%,rgba(122,92,255,.17),transparent 34%), radial-gradient(circle at 88% 30%,rgba(0,212,255,.15),transparent 30%), linear-gradient(145deg,#F8F5FF,#EDF8FF); overflow: hidden; }
.inner-hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 48px; align-items: center; }
.inner-hero-copy h1 { font-size: clamp(40px,5vw,64px); margin: 14px 0 18px; }
.inner-hero-copy .lead { font-size: 22px; color: var(--deep); font-weight: 800; }
.inner-hero-copy p:not(.lead) { color: var(--muted); }
.inner-hero-media { position: relative; background: rgba(255,255,255,.58); border: 1px solid var(--border); border-radius: 30px; padding: 24px; box-shadow: var(--shadow); }
.inner-hero-media img { max-height: 460px; margin: auto; }
.media-caption { position: absolute; left: 24px; right: 24px; bottom: 18px; background: rgba(12,18,40,.84); color: #fff; border-radius: 15px; padding: 11px 14px; font-size: 14px; backdrop-filter: blur(8px); }
.feature-grid { display: grid; gap: 18px; }
.feature-grid.four { grid-template-columns: repeat(4,1fr); }
.info-card { padding: 24px; }
.feature-number { color: var(--gold); font-weight: 900; font-size: 13px; letter-spacing: .08em; }
.info-card h3 { margin: 10px 0; font-size: 21px; }
.info-card p { color: var(--muted); font-size: 14px; }
.article-layout { display: grid; grid-template-columns: 1.35fr .65fr; gap: 24px; align-items: start; }
.article-card, .side-note-card { padding: 30px; }
.article-card h2, .side-note-card h2 { font-size: 30px; }
.article-card p { color: var(--muted); }
.side-note-card { position: sticky; top: 104px; background: linear-gradient(145deg,#fff,#EFF8FF); }
.check-list { padding: 0; list-style: none; display: grid; gap: 12px; }
.check-list li { padding-left: 28px; position: relative; color: var(--text); }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--primary); font-weight: 900; }
.steps-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
.step-card { padding: 24px; }
.step-card > span { display: inline-flex; width: 42px; height: 42px; border-radius: 14px; align-items: center; justify-content: center; background: linear-gradient(135deg,#EEF0FF,#E7FAFF); color: var(--primary); font-weight: 900; }
.step-card h3 { margin: 16px 0 8px; }
.step-card p { color: var(--muted); font-size: 14px; }
.compliance-section { padding-top: 20px; }
.compliance-card { background: linear-gradient(135deg,#182443,#11182F); color: #EAF0FF; border-radius: 28px; padding: 36px; display: grid; grid-template-columns: 1.35fr .65fr; gap: 30px; align-items: center; box-shadow: 0 24px 54px rgba(11,16,36,.22); }
.compliance-card h2 { color: #fff; font-size: 32px; }
.compliance-card p { color: #C3CCE4; margin: 0; }
.compliance-links { display: grid; gap: 10px; }
.compliance-links a { border: 1px solid rgba(255,255,255,.16); color: #fff; background: rgba(255,255,255,.08); padding: 12px 14px; border-radius: 14px; }

.site-footer { background: #0B1024; color: #EEF2FF; padding: 62px 0 24px; margin-top: 78px; }
.footer-inner { width: min(calc(100% - 40px),var(--max)); margin: 0 auto; display: grid; grid-template-columns: 1.6fr repeat(3,1fr); gap: 34px; }
.footer-brand p { color: #AEB9D7; max-width: 460px; }
.footer-logo { margin-bottom: 16px; }
.footer-cta { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14); color: #fff; margin-top: 8px; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h2 { color: #fff; font-size: 17px; margin-bottom: 8px; }
.footer-col a { color: #BFC8DF; font-size: 14px; }
.footer-col a:hover { color: #fff; }
.footer-legal { width: min(calc(100% - 40px),var(--max)); margin: 38px auto 0; border-top: 1px solid rgba(255,255,255,.1); padding-top: 22px; display: flex; justify-content: space-between; gap: 24px; color: #8995B6; font-size: 13px; }
.footer-legal p { margin: 0; max-width: 780px; }
.mobile-bottom-nav { display: none; }

@media (max-width: 1080px) {
    .nav-core { display: none; }
    .header-inner { gap: 12px; }
    .header-actions { margin-left: auto; }
    .hero-grid, .inner-hero-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
    .highlight-grid { grid-template-columns: repeat(2,1fr); }
    .feature-grid.four, .steps-grid { grid-template-columns: repeat(2,1fr); }
    .triple-grid { grid-template-columns: 1fr 1fr; }
    .triple-grid .service-card:last-child { grid-column: 1 / -1; }
    .security-card { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1.4fr 1fr 1fr; }
    .footer-col:last-child { grid-column: 2 / 4; display: grid; grid-template-columns: repeat(4,1fr); align-items: start; }
    .footer-col:last-child h2 { grid-column: 1 / -1; }
}
@media (max-width: 820px) {
    .desktop-only { display: none; }
    .mobile-only { display: inline-flex; }
    .header-inner { min-height: 66px; width: min(calc(100% - 20px),1280px); }
    .site-logo { position: absolute; left: 50%; transform: translateX(-50%); }
    .site-logo span { display: none; }
    .site-logo img { width: 38px; }
    .header-cta { min-height: 38px; padding: 7px 13px; font-size: 13px; }
    .hero { padding: 48px 0; }
    .hero-grid, .inner-hero-grid, .split-grid, .dual-grid, .security-grid, .about-summary, .article-layout, .faq-layout, .notice-card, .compliance-card { grid-template-columns: 1fr; }
    .hero-visual { max-width: 620px; margin: 0 auto; }
    .floating-one { left: 0; }
    .floating-two { right: 0; }
    .section { padding: 58px 0; }
    .content-media { order: 0 !important; }
    .review-grid, .review-grid.two { grid-template-columns: 1fr 1fr; }
    .sticky-heading, .side-note-card { position: static; }
    .site-footer { padding-bottom: 92px; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-col:last-child { grid-column: 1 / -1; grid-template-columns: repeat(4,1fr); }
    .footer-legal { flex-direction: column; }
    .mobile-bottom-nav { position: fixed; left: 12px; right: 12px; bottom: calc(10px + env(safe-area-inset-bottom)); z-index: 9500; height: 62px; display: grid; grid-template-columns: repeat(4,1fr); background: rgba(11,16,36,.94); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,.12); border-radius: 20px; box-shadow: 0 18px 42px rgba(9,14,33,.3); overflow: hidden; }
    .mobile-bottom-nav a { color: #E9EEFF; display: flex; flex-direction: column; align-items: center; justify-content: center; font-size: 12px; gap: 2px; }
    .mobile-bottom-nav span { color: var(--cyan); font-size: 18px; line-height: 1; }
}
@media (max-width: 620px) {
    .container { width: min(calc(100% - 28px),var(--max)); }
    .hero h1 { font-size: 48px; }
    .hero-subtitle { font-size: 23px; }
    .hero-copy > p { font-size: 15px; }
    .floating-card { position: static; margin: 10px 0 0; max-width: none; }
    .highlight-grid, .feature-grid.four, .steps-grid, .review-grid, .review-grid.two, .triple-grid { grid-template-columns: 1fr; }
    .triple-grid .service-card:last-child { grid-column: auto; }
    .channel-pill { max-width: none; width: 100%; border-radius: 18px; align-items: flex-start; }
    .channel-pill strong { min-width: 72px; }
    .mini-list { grid-template-columns: 1fr; }
    .security-card { padding: 22px; }
    .inner-hero { padding: 46px 0; }
    .inner-hero-copy h1 { font-size: 40px; }
    .inner-hero-copy .lead { font-size: 19px; }
    .media-caption { position: static; margin-top: 14px; }
    .article-card, .side-note-card, .info-card, .step-card { padding: 22px; }
    .notice-card, .compliance-card { padding: 26px; }
    .footer-inner { grid-template-columns: 1fr; }
    .footer-brand, .footer-col:last-child { grid-column: auto; }
    .footer-col:last-child { display: flex; }
    .drawer-nav { grid-template-columns: 1fr; }
}