:root {
    --bg: #F4F6FF;
    --deep: #E4E8F6;
    --content: #FBFBFF;
    --soft: #EEF0FA;
    --title: #1E1A2A;
    --text: #2E2A3A;
    --muted: #5A5668;
    --helper: #7A7688;
    --coral: #E07070;
    --gold: #E0B050;
    --mint: #70C090;
    --sky: #70A8D8;
    --violet: #A080D0;
    --white: #FBFBFF;
    --border: rgba(30,26,42,0.12);
    --strong-border: rgba(160,128,208,0.48);
    --shadow: 0 12px 28px rgba(30,26,42,0.08);
    --max: 980px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.7;
    overflow-x: hidden;
    padding-top: 126px;
}
body.no-scroll { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; }
img { display: block; max-width: 100%; }
.rainbow-rail {
    position: fixed; left: 0; top: 0; bottom: 0; width: 6px; z-index: 90;
    background: linear-gradient(to bottom, var(--coral) 0 20%, var(--gold) 20% 40%, var(--mint) 40% 60%, var(--sky) 60% 80%, var(--violet) 80% 100%);
}
.site-head { position: fixed; inset: 0 0 auto 0; z-index: 80; }
.head-wrap { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.meta-strip { height: 20px; background: var(--white); color: var(--muted); border-bottom: 1px solid var(--border); font-size: 12px; }
.meta-strip-inner { height: 20px; display: flex; align-items: center; justify-content: space-between; }
.text-trigger { border: 0; background: transparent; min-height: 20px; padding: 0 4px; cursor: pointer; }
.brand-row { height: 54px; background: var(--white); border-bottom: 1px solid var(--strong-border); }
.brand-row-inner { height: 54px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand-link { display: inline-flex; align-items: center; min-height: 44px; }
.brand-logo { height: 24px; width: auto; object-fit: contain; object-position: center; }
.brand-fallback { font-size: 16px; font-weight: 800; letter-spacing: .04em; }
.brand-actions { display: flex; align-items: center; gap: 8px; }
.app-link, .menu-trigger, .btn, .btn-secondary {
    min-height: 40px; padding: 8px 16px; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; white-space: nowrap; font-size: 14px;
}
.app-link, .btn { color: var(--white); background: linear-gradient(90deg,#70A8D8 0%,#A080D0 100%); border: 1px solid transparent; }
.menu-trigger, .btn-secondary { background: var(--white); border: 1px solid var(--violet); color: var(--title); cursor: pointer; }
.primary-ring { height: 52px; background: var(--white); border-bottom: 1px solid var(--border); }
.ring-inner { width: min(720px, calc(100% - 32px)); margin: 0 auto; height: 52px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.ring-item { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; color: var(--muted); font-size: 13px; }
.ring-item.is-current { color: var(--title); font-weight: 700; }
.ring-no { width: 22px; height: 22px; border-radius: 999px; display: inline-grid; place-items: center; color: var(--title); border: 1px solid rgba(30,26,42,.08); }
.ring-item.is-current .ring-no { box-shadow: 0 0 0 2px var(--title); }
.coral { background: var(--coral); }.gold{background:var(--gold)}.mint{background:var(--mint)}.sky{background:var(--sky)}.violet{background:var(--violet)}
.site-main { min-height: 60vh; }
.page-shell { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; padding: 40px 0 64px; }
.hero-plain { padding: 28px 0 26px; border-bottom: 1px solid var(--border); }
.eyebrow { margin: 0 0 8px; color: var(--muted); font-size: 13px; font-weight: 700; letter-spacing: .06em; }
h1 { margin: 0 0 14px; font-size: 24px; line-height: 1.3; color: var(--title); }
h2 { margin: 0 0 12px; font-size: 20px; line-height: 1.4; color: var(--title); }
h3 { margin: 0 0 8px; font-size: 16px; line-height: 1.45; color: var(--title); }
p { margin: 0 0 14px; }
.lead { max-width: 760px; color: var(--muted); }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.section { padding: 34px 0; border-bottom: 1px solid var(--border); }
.section:last-child { border-bottom: 0; }
.index-numbers { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.index-numbers a { min-width: 74px; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: 6px; background: var(--white); border: 1px solid var(--border); border-radius: 999px; box-shadow: var(--shadow); }
.diagonal-panel { position: relative; overflow: hidden; background: var(--white); border: 1px solid var(--border); border-radius: 12px; min-height: 238px; box-shadow: var(--shadow); }
.diagonal-copy { width: 58%; padding: 28px; position: relative; z-index: 2; }
.diagonal-media { position: absolute; right: 0; top: 0; width: 48%; height: 176px; background: var(--white); clip-path: polygon(18% 0,100% 0,100% 100%,0 100%); padding-left: 34px; }
.diagonal-media img { width: 100%; height: 100%; object-fit: contain; object-position: center; }
.timeline { position: relative; padding-left: 26px; }
.timeline:before { content:""; position:absolute; left:8px; top:8px; bottom:8px; width:2px; background:var(--deep); }
.timeline-item { position:relative; margin:0 0 24px; padding:20px; background:var(--white); border:1px solid var(--border); border-radius:10px; box-shadow:var(--shadow); }
.timeline-item:before { content:""; position:absolute; left:-24px; top:24px; width:12px; height:12px; border-radius:50%; background:var(--violet); border:2px solid var(--white); box-shadow:0 0 0 1px var(--border); }
.timeline-media { height: 220px; margin: 0 0 16px; background: var(--white); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.timeline-media img { width:100%; height:100%; object-fit:contain; object-position:center; }
.ring-cards { display:grid; grid-template-columns: 1.2fr .8fr; gap:18px; }
.ring-card { position:relative; background:var(--white); border:1px solid var(--border); border-radius:12px; padding:22px; box-shadow:var(--shadow); }
.ring-card:after { content:""; position:absolute; inset:10px; border:1px solid rgba(160,128,208,.18); border-radius:999px; pointer-events:none; }
.ring-card > * { position:relative; z-index:1; }
.media-slot, .media-slot-wide, .media-slot-tall, .about-banner, .app-media { background: var(--white); border:1px solid var(--border); border-radius:12px; overflow:hidden; }
.media-slot { min-height:180px; }
.media-slot-wide { height:220px; }
.media-slot-tall, .app-media { height:320px; }
.about-banner { height:200px; }
.media-slot img, .media-slot-wide img, .media-slot-tall img, .about-banner img, .app-media img { width:100%; height:100%; object-fit:contain; object-position:center; }
.two-cards { display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.info-card { background:var(--white); border:1px solid var(--border); border-radius:10px; padding:22px; box-shadow:var(--shadow); }
.period-grid { display:grid; grid-template-columns: 1fr 1.1fr .9fr; gap:16px; }
.period-card { background:var(--white); border:1px solid var(--border); border-top:4px solid var(--violet); border-radius:10px; padding:20px; }
.status-stack { display:grid; gap:12px; }
.status-row { background:var(--white); border:1px solid var(--border); border-radius:10px; padding:18px 20px; display:grid; grid-template-columns:120px 1fr; gap:18px; align-items:start; }
.status-badge { display:inline-flex; justify-content:center; align-items:center; min-height:36px; border-radius:999px; background:var(--soft); border:1px solid var(--border); font-weight:700; }
.check-list { display:grid; gap:14px; }
.check-item { background:var(--white); border-left:4px solid var(--mint); border-radius:8px; padding:18px 20px; box-shadow:var(--shadow); }
.method-flow { display:grid; gap:18px; }
.method-step { display:grid; grid-template-columns:70px 1fr; gap:18px; align-items:start; }
.method-no { width:54px; height:54px; border-radius:50%; display:grid; place-items:center; background:var(--deep); border:1px solid var(--strong-border); font-weight:800; }
.feature-list { display:grid; gap:16px; }
.feature-row { display:grid; grid-template-columns:180px 1fr; gap:18px; padding:18px 0; border-bottom:1px solid var(--border); }
.center-cards { display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:18px; max-width:820px; margin:0 auto; }
.center-card { text-align:center; background:var(--white); border:1px solid var(--border); border-radius:12px; padding:24px; box-shadow:var(--shadow); }
.single-column { max-width:760px; margin:0 auto; }
.single-block { padding:24px 0; border-bottom:1px solid var(--border); }
.single-block:last-child { border-bottom:0; }
.app-story { max-width:760px; margin:0 auto; }
.app-icons { display:flex; justify-content:center; align-items:center; gap:18px; margin:18px 0; }
.app-icons .icon-slot { width:48px; height:48px; background:var(--white); border:1px solid var(--border); border-radius:12px; overflow:hidden; }
.app-icons img { width:100%; height:100%; object-fit:contain; object-position:center; }
.legal-blocks { display:grid; gap:14px; }
.legal-block { background:var(--white); border:1px solid var(--border); border-radius:10px; padding:20px; }
.help-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:16px; }
.help-card { background:var(--white); border:1px solid var(--border); border-radius:10px; padding:20px; }
.faq-list { display:grid; gap:14px; }
.faq-item { background:var(--white); border:1px solid var(--border); border-radius:10px; padding:20px; }
.contact-list { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:16px; }
.contact-card { background:var(--white); border:1px solid var(--border); border-radius:10px; padding:20px; min-height:180px; }
.about-statement { display:grid; grid-template-columns: 1fr .7fr; gap:20px; align-items:start; }
.about-note { background:var(--white); border:1px solid var(--border); border-radius:10px; padding:20px; box-shadow:var(--shadow); }
.install-steps { counter-reset: install; display:grid; gap:14px; }
.install-step { background:var(--white); border:1px solid var(--border); border-radius:10px; padding:20px 20px 20px 64px; position:relative; }
.install-step:before { counter-increment:install; content:counter(install); position:absolute; left:20px; top:20px; width:30px; height:30px; border-radius:50%; display:grid; place-items:center; background:var(--violet); color:var(--white); font-weight:800; }
.notice { background:var(--soft); border:1px solid var(--border); border-radius:10px; padding:18px; color:var(--muted); }
.mt-14 { margin-top: 14px; }
.mt-18 { margin-top: 18px; }
.mt-20 { margin-top: 20px; }
.text-center { text-align: center; }
.lead-center { margin-left: auto; margin-right: auto; }

.site-footer { position:relative; background:#1E1A2A; color:#F4F6FF; font-size:13px; padding:38px 0 28px; }
.site-footer:before { content:""; position:absolute; left:0; top:0; bottom:0; width:6px; background:linear-gradient(to bottom,var(--coral) 0 20%,var(--gold) 20% 40%,var(--mint) 40% 60%,var(--sky) 60% 80%,var(--violet) 80% 100%); }
.footer-inner { width:min(var(--max),calc(100% - 32px)); margin:0 auto; }
.footer-brand { display:flex; align-items:center; gap:10px; margin-bottom:24px; }
.footer-en { color:#C8C5D4; }
.footer-links { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; padding-bottom:24px; border-bottom:1px solid rgba(255,255,255,.12); }
.footer-links h2 { color:#F4F6FF; font-size:13px; margin:0 0 8px; }
.footer-links a { display:block; color:#DCD9E8; padding:4px 0; }
.rights-note { max-width:760px; color:#DCD9E8; margin-top:20px; }
.copyright { color:#AFAABC; margin-bottom:0; }
.overlay { position:fixed; inset:0; background:rgba(30,26,42,.36); opacity:0; visibility:hidden; pointer-events:none; transition:.18s ease; z-index:85; }
.overlay.is-active { opacity:1; visibility:visible; pointer-events:auto; }
.mega-menu { position:fixed; left:0; right:0; top:20px; height:28vh; min-height:260px; max-height:440px; background:var(--white); transform:translateY(-110%); visibility:hidden; pointer-events:none; transition:.22s ease; z-index:95; border-bottom:1px solid var(--strong-border); box-shadow:var(--shadow); overflow:auto; padding:16px max(16px, calc((100% - var(--max))/2)); }
.mega-menu.is-open { transform:translateY(0); visibility:visible; pointer-events:auto; }
.mega-head { display:flex; justify-content:space-between; align-items:center; min-height:44px; }
.mega-brand { display:flex; gap:8px; align-items:center; }
.close-btn { min-height:44px; padding:8px 14px; border-radius:10px; background:var(--white); border:1px solid var(--border); cursor:pointer; }
.mega-grid { display:grid; grid-template-columns:1.2fr 1.2fr .8fr 1.5fr; gap:18px; padding-bottom:18px; }
.mega-grid h2 { font-size:14px; margin:4px 0 8px; }
.mega-grid a { display:grid; grid-template-columns:80px 1fr; gap:8px; padding:6px 0; border-bottom:1px dashed rgba(30,26,42,.08); }
.mega-grid a span { color:var(--muted); font-size:12px; }
.search-panel { position:fixed; left:0; right:0; top:74px; z-index:96; visibility:hidden; pointer-events:none; opacity:0; transition:.18s ease; }
.search-panel.is-open { visibility:visible; pointer-events:auto; opacity:1; }
.search-card { width:min(680px,calc(100% - 32px)); margin:0 auto; padding:20px; background:var(--white); border:1px solid var(--strong-border); border-radius:0 0 12px 12px; box-shadow:var(--shadow); }
.search-card-head { display:flex; justify-content:space-between; align-items:center; margin-bottom:12px; }
.search-card label { display:block; color:var(--muted); margin-bottom:8px; }
.search-card input { width:100%; min-height:44px; border:1px solid var(--border); border-radius:10px; padding:10px 12px; background:var(--content); color:var(--text); outline:none; }
.search-card input:focus { border-color:var(--violet); box-shadow:0 0 0 3px rgba(160,128,208,.16); }
.search-presets { display:flex; flex-wrap:wrap; gap:8px; margin-top:12px; }
.search-presets a { min-height:40px; display:inline-flex; align-items:center; padding:8px 14px; border-radius:999px; background:var(--soft); border:1px solid var(--border); }
.search-empty { margin-top:12px; color:var(--muted); }
.mobile-bottom { display:none; }
a:hover, button:hover { filter:brightness(.98); }
a:focus-visible, button:focus-visible, input:focus-visible { outline:3px solid rgba(112,168,216,.45); outline-offset:2px; }
@media (max-width: 760px) {
    body { padding-top:74px; padding-bottom:calc(48px + env(safe-area-inset-bottom)); }
    .primary-ring { display:none; }
    .meta-strip, .meta-strip-inner { height:20px; }
    .brand-row, .brand-row-inner { height:54px; }
    .brand-actions { gap:6px; }
    .app-link, .menu-trigger { min-height:44px; padding:8px 12px; }
    .page-shell { width:calc(100% - 32px); padding-top:26px; }
    .diagonal-copy { width:100%; padding:20px; padding-top:196px; }
    .diagonal-media { width:100%; height:176px; clip-path:polygon(0 0,100% 0,100% 82%,0 100%); padding-left:0; }
    .ring-cards, .two-cards, .period-grid, .center-cards, .help-grid, .contact-list, .about-statement { grid-template-columns:1fr; }
    .status-row, .feature-row { grid-template-columns:1fr; gap:8px; }
    .method-step { grid-template-columns:54px 1fr; gap:12px; }
    .footer-links { grid-template-columns:repeat(2,1fr); }
    .mega-menu { top:0; height:28vh; min-height:300px; padding:12px 16px; }
    .mega-grid { grid-template-columns:1fr 1fr; }
    .mega-grid a { grid-template-columns:1fr; gap:0; }
    .mega-grid a span { display:block; }
    .search-panel { top:0; bottom:0; background:#1E1A2A; padding:16px; }
    .search-card { width:100%; height:100%; margin:0; border-radius:12px; background:#1E1A2A; color:#F4F6FF; border-color:rgba(255,255,255,.18); }
    .search-card strong, .search-card label, .search-card .search-empty { color:#F4F6FF; }
    .search-card input { background:#FBFBFF; color:#2E2A3A; }
    .search-presets a { background:rgba(255,255,255,.08); color:#F4F6FF; border-color:rgba(255,255,255,.16); }
    .search-card .close-btn { background:transparent; color:#F4F6FF; border-color:rgba(255,255,255,.24); }
    .mobile-bottom { position:fixed; left:0; right:0; bottom:0; z-index:82; height:calc(48px + env(safe-area-inset-bottom)); padding-bottom:env(safe-area-inset-bottom); background:var(--white); border-top:1px solid var(--border); display:grid; grid-template-columns:repeat(4,1fr); }
    .mobile-bottom a { display:grid; place-items:center; min-height:48px; font-size:13px; }
    .mobile-bottom a.is-current { background:var(--violet); color:var(--white); }
}
@media (max-width: 480px) {
    .brand-link { max-width:110px; }
    .brand-logo { max-width:110px; }
    .brand-actions { min-width:0; }
    .app-link, .menu-trigger { font-size:13px; padding-left:10px; padding-right:10px; }
    .footer-links { grid-template-columns:1fr 1fr; }
}