* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    background: linear-gradient(180deg, #DDE0F4 0%, #EEF0FA 48%, #DDE0F4 100%);
    color: #2E2E3A;
    line-height: 1.75;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 9999;
    background: rgba(221,224,244,0.94);
    backdrop-filter: blur(10px);
    box-shadow: 0 6px 18px rgba(140,109,230,0.08);
}
.header-shell {
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}
.brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand img { width: 132px; height: 44px; object-fit: contain; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 8px; min-width: 0; flex: 1; }
.nav-core a {
    color: #554B7A;
    position: relative;
    font-weight: 600;
    padding: 10px 14px;
    border-radius: 999px;
    white-space: nowrap;
}
.nav-core a:hover,
.nav-core a.active { color: #8c6de6; background: rgba(140,109,230,0.08); }
.nav-core a.active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -10px;
    width: 28px;
    height: 3px;
    border-radius: 999px;
    background: #8c6de6;
    transform: translateX(-50%);
}
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 22px;
    background: #8c6de6;
    color: #FFFFFF;
    border-radius: 999px;
    box-shadow: 0 10px 22px rgba(140,109,230,0.22);
    font-weight: 700;
    border: 0;
    white-space: nowrap;
    transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}
.main-btn:hover { background: #7E5DDD; transform: translateY(-1px); box-shadow: 0 14px 28px rgba(140,109,230,0.28); }
.channel-bar {
    background: rgba(255,255,255,0.76);
    border-top: 1px solid rgba(140,109,230,0.10);
    border-bottom: 1px solid rgba(140,109,230,0.10);
}
.channel-scroll {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 8px;
    overflow-x: auto;
    scrollbar-width: none;
    padding: 10px 20px;
}
.channel-scroll::-webkit-scrollbar { display: none; }
.channel-bar a {
    color: #66667A;
    border-radius: 999px;
    padding: 7px 14px;
    white-space: nowrap;
    font-size: 14px;
}
.channel-bar a:hover,
.channel-bar a.active { color: #8c6de6; background: rgba(140,109,230,0.10); }
.mobile-header { display: none; }
.menu-toggle {
    width: 42px;
    height: 42px;
    border: 1px solid rgba(140,109,230,0.18);
    border-radius: 14px;
    background: rgba(255,255,255,0.72);
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
}
.menu-toggle span { width: 18px; height: 2px; background: #8c6de6; border-radius: 999px; }
.drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(46,46,58,0.38);
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease;
}
.mobile-drawer {
    position: fixed;
    left: 0;
    top: 0;
    width: 84vw;
    max-width: 320px;
    height: 100vh;
    background: linear-gradient(180deg, #FFFFFF 0%, #F7F7FC 100%);
    z-index: 10000;
    transform: translateX(-105%);
    transition: transform .28s ease;
    box-shadow: 18px 0 44px rgba(75,74,107,0.20);
    padding: 18px;
    overflow-y: auto;
}
.drawer-open { overflow: hidden; }
.drawer-open .drawer-overlay { opacity: 1; pointer-events: auto; }
.drawer-open .mobile-drawer { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 14px; border-bottom: 1px solid rgba(140,109,230,0.14); }
.drawer-head img { width: 124px; height: 42px; object-fit: contain; }
.drawer-head button { border: 0; background: rgba(140,109,230,0.10); color: #8c6de6; border-radius: 12px; width: 36px; height: 36px; font-size: 24px; line-height: 1; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding-top: 16px; }
.drawer-nav a { color: #554B7A; background: rgba(238,240,250,0.72); border-radius: 14px; padding: 11px 12px; font-weight: 600; }
.drawer-nav a.active,
.drawer-nav a:hover { color: #8c6de6; background: rgba(140,109,230,0.12); }
.site-main { padding: 28px 20px 60px; }
.layout-shell {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 172px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
}
.content-area { min-width: 0; }
.side-quick-nav {
    position: sticky;
    top: 116px;
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(140,109,230,0.16);
    border-radius: 18px;
    box-shadow: 0 14px 36px rgba(140,109,230,0.10);
    padding: 14px;
}
.side-quick-nav strong { display: block; color: #8c6de6; margin: 0 0 10px; }
.side-quick-nav a {
    display: block;
    color: #66667A;
    border-radius: 12px;
    padding: 9px 10px;
    font-size: 14px;
}
.side-quick-nav a:hover,
.side-quick-nav a.active { color: #8c6de6; background: rgba(140,109,230,0.10); }
.hero-slider {
    max-width: 1200px;
    height: 360px;
    margin: 28px auto 36px;
    border-radius: 20px;
    background: #FFFFFF;
    box-shadow: 0 18px 40px rgba(140,109,230,0.10);
    overflow: hidden;
    position: relative;
    z-index: 1;
}
.hero-slider .slide { display: none; height: 100%; }
.hero-slider .slide.active { display: block; }
.hero-slider img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #FFFFFF;
}
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(140,109,230,0.18);
    border-radius: 999px;
    background: rgba(255,255,255,0.75);
    color: #8c6de6;
    box-shadow: 0 10px 22px rgba(140,109,230,0.12);
    font-size: 24px;
    cursor: pointer;
}
.slider-arrow.prev { left: 16px; }
.slider-arrow.next { right: 16px; }
.slider-dots {
    position: absolute;
    left: 50%;
    bottom: 14px;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 3;
}
.slider-dots button {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    border: none;
    background: rgba(140,109,230,0.25);
    cursor: pointer;
    padding: 0;
}
.slider-dots button.active { background: #8c6de6; }
h1, h2, h3, .section-title { color: #8c6de6; line-height: 1.25; }
h1 { font-size: clamp(30px, 4vw, 48px); margin: 10px 0 18px; }
h2 { font-size: clamp(24px, 3vw, 34px); margin: 8px 0 14px; }
h3 { font-size: 20px; margin: 8px 0 10px; }
p { color: #2E2E3A; margin: 0 0 14px; }
.section { margin: 32px 0; }
.section-head { max-width: 760px; margin-bottom: 18px; }
.section-kicker,
.tag,
.label,
.num,
.badge { color: #8c6de6; font-weight: 800; letter-spacing: .04em; }
.card-soft,
.card,
.zone-card,
.info-card,
.review-card,
.faq-item {
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(140,109,230,0.16);
    box-shadow: 0 14px 36px rgba(140,109,230,0.10);
    border-radius: 22px;
}
.home-intro,
.inner-hero,
.content-panel,
.app-band,
.notice-strip {
    padding: 28px;
}
.home-intro,
.inner-hero,
.content-panel,
.app-band {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 26px;
    align-items: center;
}
.hero-visual,
.content-panel figure,
.app-band figure { margin: 0; }
.hero-visual img,
.content-img,
.zone-card img,
.app-section img {
    max-width: 100%;
    width: 100%;
    height: 260px;
    object-fit: contain;
    border-radius: 18px;
    background: #F7F7FC;
}
.quick-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.quick-card { padding: 18px; border-radius: 18px; background: rgba(255,255,255,0.86); border: 1px solid rgba(140,109,230,0.14); }
.quick-card p { color: #66667A; font-size: 14px; margin-bottom: 10px; }
.text-link { color: #8c6de6; font-weight: 800; display: inline-flex; align-items: center; gap: 6px; }
.text-link::after { content: "→"; }
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.info-card { padding: 20px; }
.info-card .num { font-size: 18px; }
.split-two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.zone-card { overflow: hidden; }
.zone-card img { height: 190px; border-radius: 22px 22px 0 0; }
.zone-card div { padding: 20px; }
.wall-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.clean-list { margin: 14px 0 16px; padding: 0; list-style: none; display: grid; gap: 9px; }
.clean-list li { padding-left: 24px; position: relative; color: #554B7A; }
.clean-list li::before { content: ""; position: absolute; left: 0; top: 11px; width: 8px; height: 8px; border-radius: 50%; background: #8c6de6; box-shadow: 0 0 0 5px rgba(140,109,230,0.10); }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.review-card { padding: 18px; }
.review-card p { color: #554B7A; margin: 0; }
.faq-list { display: grid; gap: 12px; }
.faq-item { padding: 18px 20px; }
.faq-item h3 { margin-top: 0; }
.notice-strip { margin-top: 32px; background: rgba(255,255,255,0.86); border: 1px solid rgba(140,109,230,0.16); border-radius: 22px; }
.notice-strip p { margin: 0; color: #554B7A; }
.site-footer { background: #4B4A6B; color: #F3F2FB; margin-top: 40px; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 36px 20px; display: grid; grid-template-columns: 1.2fr .8fr; gap: 28px; align-items: start; }
.footer-brand img { width: 138px; height: 44px; object-fit: contain; margin-bottom: 12px; }
.footer-brand p,
.footer-note { color: #F3F2FB; opacity: .9; margin: 0; }
.footer-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.footer-links a { color: #F3F2FB; background: rgba(255,255,255,0.08); border-radius: 12px; padding: 10px 12px; }
.footer-note { grid-column: 1 / -1; border-top: 1px solid rgba(255,255,255,0.16); padding-top: 16px; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1024px) {
    .layout-shell { grid-template-columns: 1fr; }
    .side-quick-nav { display: none; }
    .feature-grid, .quick-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .hero-slider { height: 300px; }
}
@media (max-width: 760px) {
    body { padding-bottom: 72px; }
    .desktop-header, .channel-bar { display: none; }
    .mobile-header { display: flex; padding: 10px 14px; }
    .mobile-brand { position: absolute; left: 50%; transform: translateX(-50%); }
    .brand img { width: 112px; height: 38px; }
    .mobile-reg { padding: 8px 14px; font-size: 13px; }
    .site-main { padding: 18px 14px 38px; }
    .hero-slider { height: 205px; margin: 18px auto 24px; border-radius: 18px; }
    .slider-arrow { width: 34px; height: 34px; font-size: 18px; }
    .slider-arrow.prev { left: 10px; }
    .slider-arrow.next { right: 10px; }
    .home-intro,
    .inner-hero,
    .content-panel,
    .app-band { grid-template-columns: 1fr; padding: 20px; }
    .hero-visual img,
    .content-img,
    .zone-card img,
    .app-section img { height: 190px; }
    .quick-grid,
    .feature-grid,
    .split-two,
    .wall-grid,
    .review-grid { grid-template-columns: 1fr; }
    h1 { font-size: 30px; }
    h2 { font-size: 24px; }
    .footer-inner { grid-template-columns: 1fr; padding-bottom: 92px; }
    .footer-links { grid-template-columns: 1fr 1fr; }
    .mobile-bottom-nav {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 9998;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        background: rgba(255,255,255,0.96);
        border-top: 1px solid rgba(140,109,230,0.16);
        box-shadow: 0 -8px 24px rgba(140,109,230,0.10);
    }
    .mobile-bottom-nav a { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; padding: 8px 4px; color: #66667A; font-size: 13px; }
    .mobile-bottom-nav a span { color: inherit; font-weight: 900; line-height: 1; }
    .mobile-bottom-nav a.active,
    .mobile-bottom-nav a:hover { color: #8c6de6; }
}
@media (max-width: 420px) {
    .hero-slider { height: 182px; }
    .home-intro, .inner-hero, .content-panel, .app-band { padding: 18px; }
    .drawer-nav { grid-template-columns: 1fr; }
}