:root {
    --bg: #F5F7FF;
    --nav: rgba(12,18,40,0.94);
    --title: #131A35;
    --primary: #5B6CFF;
    --deep: #16213E;
    --cyan: #00D4FF;
    --gold: #FFC857;
    --rose: #D94F70;
    --purple: #7A5CFF;
    --text: #1F2740;
    --muted: #66708A;
    --subtle: #9AA4BA;
    --card: #FFFFFF;
    --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: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.75; overflow-x: hidden; }
body.drawer-open { overflow: hidden; }
a { color: inherit; }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 12000; padding: 10px 16px; background: #fff; color: var(--title); border-radius: 10px; }
.skip-link:focus { top: 12px; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.section-space { padding: 92px 0; }
.soft-section { background: linear-gradient(180deg, rgba(234,247,255,.75), rgba(245,247,255,.95)); }
.section-kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-size: 13px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.section-kicker::before { content: ""; width: 24px; height: 2px; border-radius: 99px; background: var(--gradient); }
h1, h2, h3 { margin: 0 0 18px; color: var(--title); line-height: 1.25; }
h1 { font-size: clamp(42px, 7vw, 82px); letter-spacing: -.04em; }
h2 { font-size: clamp(28px, 4vw, 44px); letter-spacing: -.025em; }
h3 { font-size: 20px; }
p { margin: 0 0 18px; }
.main-btn, .ghost-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border-radius: 999px; text-decoration: none; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease, opacity .2s ease; }
.main-btn { color: #fff; background: var(--gradient); box-shadow: 0 14px 32px rgba(91,108,255,.22); }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 38px rgba(91,108,255,.3); }
.ghost-btn { color: var(--title); background: rgba(255,255,255,.7); border: 1px solid var(--border); }
.ghost-btn:hover { transform: translateY(-2px); background: #fff; }
.text-link { color: var(--primary); text-decoration: none; font-weight: 800; }
.text-link:hover { text-decoration: underline; }
.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,.16); }
.header-inner { max-width: 1280px; margin: 0 auto; min-height: 72px; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-logo, .drawer-brand, .footer-logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.site-logo img { width: 44px; height: 44px; object-fit: contain; }
.site-logo strong { color: #fff; font-size: 24px; letter-spacing: -.04em; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 6px; flex: 1; }
.nav-core a { color: #EEF2FF; text-decoration: none; border-radius: 999px; padding: 8px 12px; white-space: nowrap; font-size: 15px; }
.nav-core a:hover, .nav-core a.active { color: #fff; background: rgba(0,212,255,.16); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.header-cta { min-height: 42px; padding: 0 18px; font-size: 14px; }
.menu-toggle { width: 44px; height: 44px; padding: 10px; border: 1px solid rgba(255,255,255,.15); border-radius: 14px; background: rgba(255,255,255,.06); display: inline-flex; flex-direction: column; justify-content: center; gap: 5px; }
.menu-toggle span { width: 100%; height: 2px; background: #fff; border-radius: 3px; }
.mobile-menu-toggle { display: none; }
.drawer-overlay { position: fixed; inset: 0; z-index: 10000; background: rgba(8,12,28,.56); opacity: 0; visibility: hidden; transition: .25s ease; }
.site-drawer { position: fixed; top: 0; right: 0; z-index: 10001; width: min(390px, 90vw); height: 100vh; padding: 24px; background: #fff; box-shadow: -20px 0 70px rgba(11,16,36,.24); transform: translateX(105%); transition: transform .28s ease; overflow-y: auto; }
.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; gap: 20px; }
.drawer-brand img, .footer-logo img { width: 42px; height: 42px; object-fit: contain; }
.drawer-brand span { color: var(--title); font-size: 24px; font-weight: 900; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: #EEF1FF; color: var(--title); font-size: 30px; line-height: 1; }
.drawer-copy { margin: 24px 0; color: var(--muted); }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.drawer-nav a { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 13px 14px; border: 1px solid var(--border); border-radius: 14px; text-decoration: none; color: var(--text); background: #fff; }
.drawer-nav a:hover, .drawer-nav a.active { color: var(--primary); background: #F2F4FF; }
.drawer-nav b { color: var(--primary); }
.drawer-note { margin-top: 24px; padding: 16px; color: var(--muted); font-size: 13px; background: #FFF8E7; border-radius: 16px; }
.hero { position: relative; isolation: isolate; overflow: hidden; padding: 76px 0 48px; background: radial-gradient(circle at 15% 20%, rgba(122,92,255,.2), transparent 31%), radial-gradient(circle at 85% 35%, rgba(0,212,255,.2), transparent 31%), linear-gradient(135deg, #F7F3FF 0%, #EEF9FF 55%, #FFF6FB 100%); }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(4px); z-index: -1; }
.hero::before { width: 260px; height: 260px; background: rgba(91,108,255,.08); left: -70px; bottom: -90px; }
.hero::after { width: 180px; height: 180px; background: rgba(217,79,112,.08); right: 8%; top: 60px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr); align-items: center; gap: 58px; }
.hero-copy h1 { margin-top: 12px; }
.hero-subtitle { color: var(--purple); font-size: clamp(22px, 3vw, 32px); font-weight: 900; margin-bottom: 22px; }
.hero-description { color: var(--muted); font-size: 17px; max-width: 680px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-points span, .hero-tags span { display: inline-flex; align-items: center; padding: 8px 13px; color: var(--deep); background: rgba(255,255,255,.76); border: 1px solid rgba(91,108,255,.12); border-radius: 999px; font-size: 13px; font-weight: 700; }
.hero-visual { position: relative; }
.hero-visual::before { content: ""; position: absolute; inset: 8% 2%; background: var(--gradient); opacity: .16; filter: blur(48px); border-radius: 48%; }
.hero-visual img { position: relative; width: 100%; max-height: 620px; object-fit: contain; filter: drop-shadow(0 30px 42px rgba(36,48,96,.22)); }
.floating-card { position: absolute; display: flex; align-items: center; gap: 10px; padding: 11px 14px; background: rgba(255,255,255,.9); border: 1px solid rgba(255,255,255,.75); border-radius: 16px; box-shadow: var(--shadow); backdrop-filter: blur(14px); font-size: 13px; font-weight: 800; }
.floating-card.one { left: -30px; top: 18%; }
.floating-card.two { right: -25px; bottom: 20%; }
.service-strip { margin-top: -1px; padding: 20px 0; background: #fff; border-bottom: 1px solid var(--border); }
.service-strip-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.service-chip { padding: 16px 18px; border-radius: 18px; background: #F8FAFF; border: 1px solid rgba(91,108,255,.11); }
.service-chip h3 { font-size: 16px; margin-bottom: 5px; }
.service-chip p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.6; }
.section-heading { max-width: 760px; margin-bottom: 42px; }
.section-heading.centered { margin-left: auto; margin-right: auto; text-align: center; }
.section-heading.centered .section-kicker { justify-content: center; }
.section-heading p { color: var(--muted); font-size: 16px; }
.channel-pills { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.channel-pill { display: block; padding: 18px; border-radius: 20px; background: #fff; border: 1px solid var(--border); box-shadow: 0 12px 28px rgba(25,43,91,.08); text-decoration: none; transition: transform .2s ease, border-color .2s ease; }
.channel-pill:hover { transform: translateY(-3px); border-color: rgba(91,108,255,.45); }
.channel-pill strong { display: block; color: var(--title); margin-bottom: 5px; }
.channel-pill span { color: var(--muted); font-size: 13px; line-height: 1.5; }
.brand-panel { display: grid; grid-template-columns: .9fr 1.1fr; gap: 44px; align-items: center; padding: 52px; background: #fff; border: 1px solid var(--border); border-radius: 32px; box-shadow: var(--shadow); }
.brand-panel img { width: 100%; max-height: 460px; object-fit: contain; }
.brand-panel p { color: var(--muted); }
.banner-mini-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 22px 0; }
.banner-mini-grid img { width: 100%; height: 120px; object-fit: contain; border-radius: 16px; background: linear-gradient(135deg, #F4F1FF, #EDF9FF); border: 1px solid var(--border); }
.media-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 24px; }
.media-feature, .media-side, .split-card, .triple-card, .security-card, .review-card, .step-card, .aside-card, .content-section, .review-feature, .mini-faq { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.media-feature { padding: 28px; display: grid; grid-template-columns: 1fr .95fr; gap: 26px; align-items: center; }
.media-feature img { width: 100%; max-height: 400px; object-fit: contain; }
.media-feature p, .media-side p, .split-card p, .triple-card p, .security-card p { color: var(--muted); }
.media-side { padding: 28px; }
.media-side img { width: 100%; max-height: 220px; object-fit: contain; margin-bottom: 22px; }
.feature-list { display: grid; gap: 12px; padding: 0; margin: 22px 0; list-style: none; }
.feature-list li { position: relative; padding-left: 24px; color: var(--text); }
.feature-list li::before { content: "✓"; position: absolute; left: 0; color: var(--primary); font-weight: 900; }
.split-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.split-card { overflow: hidden; }
.split-card img { width: 100%; height: 300px; object-fit: contain; background: linear-gradient(135deg, #F2F1FF, #EDFAFF); }
.split-card-body { padding: 28px; }
.small-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 22px 0; }
.small-points span { padding: 11px 12px; text-align: center; border-radius: 12px; background: #F4F6FF; color: var(--primary); font-size: 13px; font-weight: 800; }
.triple-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.triple-card { overflow: hidden; }
.triple-card img { width: 100%; height: 220px; object-fit: contain; background: linear-gradient(135deg, #F4F1FF, #EDF9FF); }
.triple-card-body { padding: 24px; }
.security-wrap { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.security-card { padding: 30px; display: grid; grid-template-columns: 170px 1fr; gap: 26px; align-items: center; }
.security-card img { width: 100%; max-height: 210px; object-fit: contain; }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.review-card { padding: 24px; }
.review-card p { color: var(--muted); }
.review-card strong { display: block; color: var(--title); }
.review-card small { color: var(--subtle); }
.faq-list { display: grid; gap: 12px; max-width: 920px; margin: 0 auto; }
details { background: #fff; border: 1px solid var(--border); border-radius: 18px; padding: 0 20px; }
summary { list-style: none; cursor: pointer; position: relative; padding: 18px 36px 18px 0; color: var(--title); font-weight: 800; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: 14px; width: 30px; height: 30px; display: grid; place-items: center; color: var(--primary); background: #F0F2FF; border-radius: 50%; }
details[open] summary::after { content: "−"; }
details p { color: var(--muted); padding: 0 0 18px; }
.notice-panel { padding: 34px; border-radius: 28px; background: linear-gradient(135deg, #16213E, #1A2A57); color: #EEF2FF; box-shadow: var(--shadow); }
.notice-panel h2 { color: #fff; }
.notice-panel p { color: rgba(238,242,255,.78); }
.notice-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.notice-links a { padding: 10px 16px; border-radius: 999px; background: rgba(255,255,255,.09); color: #fff; text-decoration: none; }
.about-strip { display: grid; grid-template-columns: 1fr 260px; gap: 30px; align-items: center; padding: 36px; border-radius: 28px; background: #fff; border: 1px solid var(--border); }
.about-strip img { width: 100%; max-height: 220px; object-fit: contain; }
.inner-hero { position: relative; overflow: hidden; padding: 78px 0 68px; background: radial-gradient(circle at 10% 20%, rgba(122,92,255,.18), transparent 34%), radial-gradient(circle at 88% 28%, rgba(0,212,255,.16), transparent 30%), linear-gradient(135deg, #F8F4FF, #EEF9FF); }
.inner-hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 50px; align-items: center; }
.inner-hero-copy h1 { margin: 12px 0 22px; font-size: clamp(40px, 6vw, 68px); }
.hero-lead { color: var(--muted); font-size: 17px; max-width: 720px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.inner-hero-media { position: relative; min-height: 420px; display: grid; place-items: center; }
.inner-hero-media img { position: relative; z-index: 1; width: 100%; max-height: 450px; object-fit: contain; filter: drop-shadow(0 28px 40px rgba(36,48,96,.22)); }
.media-glow { position: absolute; width: 74%; aspect-ratio: 1; border-radius: 50%; background: var(--gradient); opacity: .18; filter: blur(55px); }
.prose-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 34px; align-items: start; }
.prose-main { display: grid; gap: 22px; }
.content-section { position: relative; padding: 34px; }
.content-section h2 { padding-right: 70px; }
.content-section p { color: var(--muted); }
.section-number { position: absolute; right: 28px; top: 26px; color: rgba(91,108,255,.18); font-size: 42px; line-height: 1; font-weight: 900; }
.sticky-card { position: sticky; top: 96px; padding: 28px; }
.check-list { display: grid; gap: 13px; padding: 0; margin: 22px 0 26px; list-style: none; }
.check-list li { position: relative; padding-left: 26px; color: var(--muted); }
.check-list li::before { content: "•"; position: absolute; left: 7px; color: var(--cyan); font-size: 22px; line-height: 1.25; }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.step-card { padding: 24px; }
.step-card > span { width: 42px; height: 42px; display: grid; place-items: center; margin-bottom: 18px; border-radius: 14px; background: var(--gradient); color: #fff; font-weight: 900; }
.step-card p { color: var(--muted); font-size: 14px; }
.quote-and-faq { display: grid; grid-template-columns: .8fr 1.2fr; gap: 24px; align-items: stretch; }
.review-feature { position: relative; padding: 42px; background: linear-gradient(145deg, #11182F, #1A2857); color: #fff; }
.review-feature p { color: rgba(255,255,255,.86); font-size: 18px; }
.review-feature strong { display: block; }
.review-feature small { color: rgba(255,255,255,.58); }
.quote-mark { display: block; color: var(--cyan); font-size: 72px; line-height: .8; font-family: Georgia, serif; }
.mini-faq { padding: 34px; }
.mini-faq details { box-shadow: none; margin-bottom: 10px; }
.safety-band { padding-top: 30px; }
.safety-band-inner { display: grid; grid-template-columns: .8fr 1.4fr auto; gap: 30px; align-items: center; padding: 36px; border-radius: 28px; background: linear-gradient(135deg, #FFF4D6, #EEF8FF); border: 1px solid rgba(255,200,87,.36); }
.safety-band-inner h2 { font-size: 28px; margin-bottom: 0; }
.safety-band-inner p { color: var(--muted); margin: 0; }
.safety-links { display: grid; gap: 8px; }
.safety-links a { color: var(--primary); text-decoration: none; font-weight: 800; white-space: nowrap; }
.site-footer { margin-top: 80px; background: #0B1024; color: #EEF2FF; }
.footer-inner { width: min(1180px, calc(100% - 40px)); margin: 0 auto; display: grid; grid-template-columns: 1.1fr 2fr; gap: 60px; padding: 68px 0 44px; }
.footer-logo span { color: #fff; font-size: 28px; font-weight: 900; }
.footer-brand p { color: rgba(238,242,255,.65); max-width: 430px; }
.footer-links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.footer-links h3 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-links a { display: block; margin: 9px 0; color: rgba(238,242,255,.66); text-decoration: none; font-size: 14px; }
.footer-links a:hover { color: var(--cyan); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 30px; width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 22px 0 30px; border-top: 1px solid rgba(255,255,255,.08); }
.footer-bottom p { margin: 0; color: rgba(238,242,255,.52); font-size: 12px; }
.footer-bottom p:last-child { max-width: 720px; text-align: right; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1050px) {
    .nav-core { display: none; }
    .mobile-menu-toggle { display: inline-flex; }
    .desktop-menu-toggle { display: none; }
    .site-logo { margin-right: auto; }
    .hero-grid, .inner-hero-grid, .brand-panel, .media-grid, .prose-layout, .quote-and-faq { grid-template-columns: 1fr; }
    .hero-copy { text-align: center; }
    .hero-description { margin-left: auto; margin-right: auto; }
    .hero-actions, .hero-points { justify-content: center; }
    .hero-visual { max-width: 700px; margin: 0 auto; }
    .floating-card.one { left: 5%; }
    .floating-card.two { right: 5%; }
    .channel-pills { grid-template-columns: repeat(3, 1fr); }
    .service-strip-grid, .steps-grid { grid-template-columns: repeat(2, 1fr); }
    .media-feature { grid-template-columns: 1fr; }
    .triple-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
    .security-card { grid-template-columns: 130px 1fr; }
    .inner-hero-copy { text-align: center; }
    .inner-hero-copy .hero-actions, .inner-hero-copy .hero-tags { justify-content: center; }
    .prose-aside { order: -1; }
    .sticky-card { position: static; }
    .safety-band-inner { grid-template-columns: 1fr; }
    .safety-links { grid-template-columns: repeat(3, max-content); }
    .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
    body { padding-bottom: 68px; }
    .container { width: min(100% - 28px, 1180px); }
    .section-space { padding: 64px 0; }
    .header-inner { min-height: 64px; padding: 0 12px; gap: 10px; }
    .site-logo { margin: 0 auto; }
    .site-logo img { width: 38px; height: 38px; }
    .site-logo strong { display: none; }
    .menu-toggle { width: 40px; height: 40px; }
    .header-cta { min-height: 38px; padding: 0 14px; font-size: 13px; }
    .hero { padding: 54px 0 38px; }
    .hero-grid { gap: 32px; }
    .hero-copy h1 { font-size: 56px; }
    .hero-subtitle { font-size: 24px; }
    .hero-description { font-size: 15px; }
    .floating-card { display: none; }
    .service-strip-grid, .channel-pills, .split-grid, .triple-grid, .security-wrap, .review-grid, .steps-grid { grid-template-columns: 1fr; }
    .service-chip { padding: 14px 16px; }
    .brand-panel { padding: 26px; gap: 24px; }
    .media-feature { padding: 22px; }
    .split-card img { height: 230px; }
    .triple-card img { height: 200px; }
    .security-card { grid-template-columns: 1fr; padding: 24px; }
    .security-card img { max-height: 180px; }
    .small-points { grid-template-columns: 1fr; }
    .notice-panel, .about-strip, .content-section, .mini-faq, .review-feature, .safety-band-inner { padding: 24px; }
    .about-strip { grid-template-columns: 1fr; }
    .inner-hero { padding: 56px 0 44px; }
    .inner-hero-grid { gap: 24px; }
    .inner-hero-media { min-height: 280px; }
    .content-section h2 { padding-right: 0; }
    .section-number { position: static; display: inline-block; margin-bottom: 12px; font-size: 30px; }
    .safety-links { grid-template-columns: 1fr; }
    .footer-inner { padding-top: 54px; gap: 34px; }
    .footer-links { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .footer-bottom { flex-direction: column; align-items: flex-start; padding-bottom: 28px; }
    .footer-bottom p:last-child { text-align: left; }
    .mobile-bottom-nav { position: fixed; left: 0; right: 0; bottom: 0; z-index: 9000; display: grid; grid-template-columns: repeat(4, 1fr); min-height: 64px; padding-bottom: env(safe-area-inset-bottom); background: rgba(255,255,255,.96); border-top: 1px solid var(--border); box-shadow: 0 -8px 26px rgba(25,43,91,.12); backdrop-filter: blur(14px); }
    .mobile-bottom-nav a { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; color: var(--muted); text-decoration: none; font-size: 11px; }
    .mobile-bottom-nav a span { font-size: 19px; line-height: 1; }
    .mobile-bottom-nav a.active { color: var(--primary); }
    .site-drawer { left: 0; right: auto; transform: translateX(-105%); }
    .drawer-open .site-drawer { transform: translateX(0); }
    .drawer-nav { grid-template-columns: 1fr; }
}
@media (max-width: 430px) {
    .header-cta { padding: 0 11px; }
    .hero-actions { flex-direction: column; }
    .hero-actions a { width: 100%; }
    .footer-links { grid-template-columns: 1fr; }
}