:root {
    --ink: #20253f;
    --muted: #66708c;
    --lavender: #7567d8;
    --lavender-deep: #5549b8;
    --sky: #dff6ff;
    --mint: #dff7ed;
    --peach: #fff0e2;
    --line: #e6e8f3;
    --paper: #ffffff;
    --night: #171a2c;
    --shadow: 0 22px 60px rgba(46, 42, 105, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--ink);
    background: #fbfbff;
    font-family: "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(251, 251, 255, .9);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(230, 232, 243, .8);
}
.nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 800; letter-spacing: .04em; font-size: 1.15rem; }
.brand img { width: 38px; height: 38px; border-radius: 12px; }
.brand span { color: var(--ink); }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a { padding: 8px 13px; border-radius: 10px; color: var(--muted); font-size: .94rem; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--lavender-deep); background: #efedff; }
.nav-download { padding: 10px 17px !important; color: #fff !important; background: var(--lavender); box-shadow: 0 8px 18px rgba(117, 103, 216, .25); }
.nav-toggle { display: none; border: 0; background: transparent; font-size: 1.5rem; color: var(--ink); }
.hero { padding: 80px 0 62px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 64px; }
.eyebrow { color: var(--lavender-deep); font-weight: 800; letter-spacing: .13em; font-size: .76rem; text-transform: uppercase; }
h1, h2, h3 { margin: 0; line-height: 1.2; letter-spacing: -.02em; }
h1 { font-size: clamp(2.3rem, 5vw, 4.4rem); max-width: 620px; }
h2 { font-size: clamp(1.7rem, 3vw, 2.45rem); }
h3 { font-size: 1.13rem; }
.hero-copy { margin: 23px 0 0; max-width: 570px; color: var(--muted); font-size: 1.08rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 9px; border-radius: 12px; padding: 13px 21px; font-weight: 700; border: 1px solid transparent; transition: transform .2s ease, box-shadow .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--lavender); color: #fff; box-shadow: 0 12px 24px rgba(117, 103, 216, .28); }
.btn-secondary { color: var(--lavender-deep); background: #fff; border-color: #d9d5ff; }
.hero-note { margin-top: 16px; color: #7d84a0; font-size: .86rem; }
.hero-art { position: relative; min-height: 440px; display: grid; place-items: center; }
.hero-art::before, .hero-art::after { content: ""; position: absolute; border-radius: 50%; filter: blur(1px); }
.hero-art::before { width: 380px; height: 380px; background: #e7e4ff; right: 5%; top: 4%; }
.hero-art::after { width: 190px; height: 190px; background: #dff6ff; left: 0; bottom: 4%; }
.phone { position: relative; z-index: 1; width: min(285px, 72vw); border: 10px solid #1f2139; border-radius: 34px; background: #1f2139; box-shadow: var(--shadow); transform: rotate(4deg); }
.phone img { border-radius: 24px; width: 100%; }
.phone-tag { position: absolute; z-index: 2; right: -65px; top: 54px; padding: 10px 14px; background: #fff; border-radius: 13px; box-shadow: 0 14px 30px rgba(39, 42, 87, .12); font-size: .82rem; color: var(--lavender-deep); }
.phone-tag strong { display: block; color: var(--ink); font-size: 1rem; }
.section { padding: 86px 0; }
.section.soft { background: #f2f1ff; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 30px; }
.section-head .kicker { margin: 0 0 10px; color: var(--lavender-deep); font-size: .8rem; font-weight: 800; letter-spacing: .11em; }
.section-head .head-note { max-width: 410px; margin: 0; color: var(--muted); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature-card { padding: 24px; min-height: 210px; background: var(--paper); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 8px 26px rgba(39, 42, 87, .05); }
.feature-card:nth-child(2) { background: #fff9ee; }
.feature-card:nth-child(3) { background: #effaf7; }
.feature-icon { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 12px; margin-bottom: 22px; background: #eae7ff; color: var(--lavender-deep); font-weight: 900; }
.feature-card:nth-child(2) .feature-icon { background: #ffe6c8; color: #b96b27; }
.feature-card:nth-child(3) .feature-icon { background: #c9f0e2; color: #2a8b68; }
.feature-card p, .content p { color: var(--muted); margin: 10px 0 0; }
.screen-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; align-items: end; }
.screen-card { margin: 0; }
.screen-card img { width: min(100%, 240px); max-width: 400px; margin: 0 auto; border-radius: 20px; border: 6px solid #20213a; box-shadow: 0 16px 30px rgba(37, 39, 80, .14); }
.screen-card figcaption { margin-top: 13px; text-align: center; color: var(--muted); font-size: .88rem; }
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 28px; }
.stat { padding: 18px 20px; border-left: 3px solid var(--lavender); background: #fff; }
.stat b { display: block; font-size: 1.65rem; color: var(--ink); }
.stat span { color: var(--muted); font-size: .85rem; }
.route-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.route-card { padding: 24px; border-radius: 16px; background: #fff; border: 1px solid var(--line); }
.route-card .route-top { display: flex; justify-content: space-between; gap: 16px; align-items: center; }
.route-card small { color: var(--lavender-deep); font-weight: 800; }
.route-card p { color: var(--muted); margin: 12px 0 17px; }
.text-link { color: var(--lavender-deep); font-weight: 700; }
.quote-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 16px; }
.quote { padding: 31px; background: var(--night); color: #fff; border-radius: 18px; }
.quote p { margin: 0; font-size: 1.2rem; line-height: 1.75; }
.quote cite { display: block; margin-top: 18px; color: #bfc4df; font-style: normal; font-size: .9rem; }
.quote-side { display: grid; gap: 16px; }
.mini-callout { padding: 22px; border-radius: 16px; background: #fff; border: 1px solid var(--line); }
.mini-callout strong { font-size: 1.28rem; display: block; }
.mini-callout span { color: var(--muted); font-size: .9rem; }
.page-hero { padding: 72px 0 44px; background: linear-gradient(120deg, #f0efff 0%, #fbfbff 58%); }
.page-hero p { max-width: 650px; color: var(--muted); margin: 18px 0 0; font-size: 1.05rem; }
.content-layout { display: grid; grid-template-columns: minmax(0, 1fr) 290px; gap: 38px; align-items: start; }
.content { font-size: 1.02rem; }
.content h2 { margin: 38px 0 14px; font-size: 1.65rem; }
.content h3 { margin: 25px 0 8px; }
.content ul, .content ol { padding-left: 22px; color: var(--muted); }
.content li { margin: 8px 0; }
.aside { position: sticky; top: 100px; padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 16px; }
.aside h3 { margin-bottom: 14px; }
.aside a { display: block; padding: 9px 0; color: var(--muted); border-bottom: 1px solid #f0f0f6; font-size: .92rem; }
.aside a:last-child { border-bottom: 0; }
.faq-list { display: grid; gap: 12px; }
details { background: #fff; border: 1px solid var(--line); border-radius: 13px; padding: 17px 19px; }
summary { cursor: pointer; font-weight: 700; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; float: right; color: var(--lavender-deep); font-size: 1.2rem; }
details[open] summary::after { content: "−"; }
details p { margin: 12px 0 0; color: var(--muted); }
.footer { padding: 44px 0 26px; background: #171a2c; color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.footer .brand span { color: #fff; }
.footer p { color: #b7bdd7; margin: 13px 0 0; max-width: 560px; }
.footer-nav { justify-self: end; display: flex; gap: 18px; align-items: start; flex-wrap: wrap; }
.footer-nav a { color: #dce0f0; font-size: .9rem; }
.disclaimer { margin-top: 28px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.15); color: #aeb4cd; font-size: .84rem; }
.copyright { margin-top: 16px; color: #8e95b2; font-size: .8rem; }
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 850px) {
    .wrap { width: min(100% - 28px, 680px); }
    .nav-toggle { display: block; }
    .nav-links { display: none; position: absolute; left: 14px; right: 14px; top: 70px; padding: 10px; background: #fff; border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); flex-direction: column; align-items: stretch; }
    .nav-links.open { display: flex; }
    .nav-links a { text-align: center; }
    .hero { padding-top: 48px; }
    .hero-grid, .content-layout, .quote-grid { grid-template-columns: 1fr; gap: 38px; }
    .hero-art { min-height: 360px; }
    .phone-tag { right: 3%; }
    .feature-grid, .route-grid { grid-template-columns: 1fr; }
    .screen-strip { grid-template-columns: repeat(2, 1fr); }
    .stat-row { grid-template-columns: repeat(2, 1fr); }
    .aside { position: static; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-nav { justify-self: start; }
}
@media (max-width: 480px) {
    h1 { font-size: 2.35rem; }
    .section { padding: 60px 0; }
    .section-head { display: block; }
    .section-head .head-note { margin-top: 14px; }
    .screen-strip { gap: 10px; }
    .screen-card img { border-width: 4px; border-radius: 15px; }
    .stat b { font-size: 1.35rem; }
}