/* ============================================================
   重庆超音速记 · 首页样式
   主色：深蓝 #0a2a5e    强调：绿 #22c55e
   设计：单屏滚动，每个 section 至少一屏，scroll-snap 吸附
   ============================================================ */

/* ========== 本地思源黑体（开源 OFL，自托管） ========== */
@font-face {
    font-family: 'Source Han Sans CN';
    src: url("../fonts/SourceHanSansCN-Regular.woff2") format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Source Han Sans CN';
    src: url("../fonts/SourceHanSansCN-Medium.woff2") format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Source Han Sans CN';
    src: url("../fonts/SourceHanSansCN-Bold.woff2") format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

:root {
    --primary: #0a2a5e;
    --primary-2: #14366b;
    --primary-light: #e8eef7;
    --accent: #22c55e;
    --accent-dark: #16a34a;
    --text: #1f2d3d;
    --text-light: #6b7a90;
    --bg: #ffffff;
    --bg-soft: #f4f7fb;
    --radius: 16px;
    --shadow: 0 10px 30px rgba(10, 42, 94, .08);
    --header-h: 68px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html {
    scroll-behavior: smooth;
    scroll-padding-top: 0;
    scroll-snap-type: y mandatory;
}
body {
    font-family: 'Source Han Sans CN', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; width: 100%; }

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 40px;
    border-radius: 999px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all .2s;
}
.btn svg { width: 18px; height: 18px; }
.banner-wechat { position: relative; }
.banner-popup {
    position: absolute; bottom: calc(100% + 14px); left: 50%; transform: translateX(-50%);
    background: #fff; border-radius: 12px; padding: 12px; text-align: center;
    box-shadow: 0 12px 40px rgba(0,0,0,.25); width: 160px; z-index: 20;
    opacity: 0; pointer-events: none; transition: opacity .2s;
}
.banner-popup::after {
    content: ''; position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
    border: 8px solid transparent; border-top-color: #fff;
}
.banner-wechat:hover .banner-popup { opacity: 1; }
.banner-popup img { width: 136px; height: 136px; object-fit: contain; }
.banner-popup p { font-size: 12px; color: #666; margin-top: 8px; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); }
.btn-outline { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,.85); }
.btn-outline:hover { background: rgba(255,255,255,.15); }

/* ========== 顶部导航（透明浮层，滚动后变白底） ========== */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: transparent;
    transition: background .3s, box-shadow .3s, transform .3s, opacity .3s;
    height: var(--header-h);
}
.site-header.hidden {
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
}
.site-header.scrolled {
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(8px);
    box-shadow: 0 1px 0 rgba(10,42,94,.06);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { height: 42px; object-fit: cover; border-radius: 8px; }
.brand-logo.logo-scrolled { display: none; }
.site-header.scrolled .logo-default { display: none; }
.site-header.scrolled .logo-scrolled { display: block; }
.nav { display: flex; align-items: center; gap: 32px; }
.nav-link { font-size: 15px; color: rgba(255,255,255,.92); position: relative; padding: 6px 0; transition: color .3s; }
.nav-link:hover, .nav-link.active { color: #fff; }
.site-header.scrolled .nav-link { color: var(--text); }
.site-header.scrolled .nav-link:hover,
.site-header.scrolled .nav-link.active { color: var(--primary); }
.nav-link.active::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 2px;
    background: var(--accent); border-radius: 2px;
}
.nav-cta {
    padding: 9px 24px; border-radius: 999px;
    background: transparent; color: #fff; font-size: 14px;
    border: 1.5px solid rgba(255,255,255,.85);
    transition: all .3s;
}
.nav-cta:hover { background: rgba(255,255,255,.15); }
.site-header.scrolled .nav-cta {
    background: var(--primary); border-color: var(--primary); color: #fff;
}
.site-header.scrolled .nav-cta:hover { background: var(--primary-2); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: #fff; margin: 5px 0; transition: background .3s; }
.site-header.scrolled .nav-toggle span { background: var(--primary); }

/* ========== 通用全屏 section ========== */
.section, .stats, .scene, .about, .banner {
    min-height: 100vh;
    display: flex;
    align-items: center;
    scroll-snap-align: start;
    scroll-snap-stop: always;
}
.section { padding: 80px 0 60px; }
.section .wrap { flex: 1; }

.section-title {
    text-align: center; font-size: 38px; font-weight: 700; color: var(--primary);
    margin-bottom: 14px; letter-spacing: 1px;
}
.section-desc { text-align: center; color: var(--text-light); font-size: 16px; margin-bottom: 56px; }
.section-desc.accent { color: var(--primary); font-size: 18px; font-weight: 500; }

/* ========== Banner（首屏） ========== */
.banner {
    position: relative;
    color: #fff; overflow: hidden;
    min-height: 100vh;
}
.banner-bg {
    position: absolute; inset: 0;
    background:url("../images/home/banner-hand.png") right center / cover no-repeat;
}
.banner-inner {
    position: relative; z-index: 2;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    padding-top: var(--header-h);
}
.banner-title {
    font-size: 64px; font-weight: 700; line-height: 1.15;
    letter-spacing: 4px; margin-bottom: 24px;
}
.banner-sub {
    font-size: 20px; display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 0;
    margin-bottom: 40px; color: rgba(255,255,255,.92);
}
.banner-sub span { padding: 0 18px; }
.banner-sub .dot {
    width: 1px; height: 18px; background: rgba(255,255,255,.5); border-radius: 0;
    margin: 0 4px;
}
.banner-btns { display: flex; gap: 20px; flex-wrap: wrap; justify-content: center; }

/* ========== 核心服务 ========== */
.service {
    background: radial-gradient(circle at 0% 0%, rgba(34,197,94,.12), transparent 50%), #fff;
}
.service-grid {
    display: flex; gap: 18px; align-items: stretch;
}
.service-card {
    position: relative; border-radius: var(--radius); overflow: hidden;background-color: transparent;
    flex: 1; min-height: 380px; cursor: pointer;
    transition: flex .4s ease;
}
.service-card.active { flex: 2; }
.service-img { width: 100%; flex: 1; min-height: 440px; object-fit: cover; display: block; position: absolute; inset: 0; }
.service-overlay {
    position: absolute; left: 0; right: 0; bottom: 0;
    padding: 28px;
    background: linear-gradient(to top, rgba(255,255,255,.96) 0%, rgba(255,255,255,.85) 55%, transparent 100%);
}
.service-overlay h3 { font-size: 22px; color: var(--primary); margin-bottom: 6px; }
.service-short { font-size: 14px; color: #555; line-height: 1.5; }
.service-detail {
    max-height: 0; overflow: hidden; opacity: 0;
    transition: max-height .35s ease, opacity .35s ease, margin-top .35s ease;
}
.service-detail p { font-size: 13px; color: #444; line-height: 1.7; margin-top: 8px; }
.service-card.active .service-detail,
.service-card.open .service-detail { max-height: 180px; opacity: 1; margin-top: 8px; }
.service-card.active { transform: translateY(-4px); transition: all .25s; }
.stats {
    background-color: #DEEFFD;
    background-repeat: no-repeat;
    background-position: center center;
    background-size: auto;
    position: relative;
}
.stats .wrap { position: relative; z-index: 2; }
.stats-title { margin-bottom: 60px; color: #004ABF; }
.stats-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center;
}
.stat-num { font-size: 52px; font-weight: 700; color: #004ABF; line-height: 1.1; }
.stat-num span { font-size: 16px; font-weight: 400; color: var(--text-light); margin-left: 6px; }
.stat-label { color: #333; margin-top: 10px; font-size: 14px; }

.slogan-roll {
    margin-top: 40px;
    height: 180px;
    overflow: hidden;
    position: relative;
    display: flex;
    justify-content: center;
}
.slogan-track {
    display: flex; flex-direction: column; align-items: center;
    padding: 60px 0;
    transition: transform .8s ease;
}
.slogan-track img { height: 60px; width: auto; display: block; flex-shrink: 0; transition: filter .6s, opacity .6s; }
.slogan-track img.blur { filter: blur(3px); opacity: .5; }

/* ========== 会议集锦 ========== */
.scene {
    background: #0a2a5e;
    color: #fff; padding: 60px 0;
    position: relative;
}
.scene-inner { display: grid; grid-template-columns: 1fr 1.1fr; gap: 60px; align-items: stretch; }
.scene-text { display: flex; flex-direction: column; justify-content: space-between; padding: 20px 0; }
.scene-line { width: 40px; height: 3px; background: var(--accent); margin: 12px 0; border-radius: 2px; }
.scene-eyebrow {
    color: var(--accent); font-size: 14px; letter-spacing: 3px; margin-bottom: 14px;
}
.scene-text h2 { font-size: 28px; margin-bottom: 18px; line-height: 1.3; }
.scene-text > p { color: rgba(255,255,255,.8); margin-bottom: 28px; font-size: 17px; }
.scene-current {
    font-size: 46px; font-weight: 700; color: var(--accent);
    line-height: 1.1; letter-spacing: 2px; margin-top: 20px !important;
    transition: opacity .3s;
}
.scene-visual { position: relative; display: flex; justify-content: center; align-items: center; }
.scene-circle {
    width: 640px; height: 420px;
    border-radius: 210px;
    overflow: hidden; position: relative;
    box-shadow: 0 20px 60px rgba(0,0,0,.4);
}
.scene-slide {
    position: absolute; inset: 0; opacity: 0; transition: opacity .5s ease;
}
.scene-slide.active { opacity: 1; }
.scene-slide img { width: 100%; flex: 1; min-height: 440px; object-fit: cover; }
.scene-arrow {
    position: absolute; right: -20px; top: 50%; transform: translateY(-50%);
    width: 64px; height: 64px; border-radius: 50%;
    background: var(--accent); border: none;
    cursor: pointer; z-index: 5;
    box-shadow: 0 8px 24px rgba(34,197,94,.4);
    transition: transform .2s;
    
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0; 
}
.scene-arrow::after {
    content: ''; 
    display: block;
    width: 16px;
    height: 16px;
    border-top: 4px solid #ffffff;
    border-right: 4px solid #ffffff;
    transform: rotate(45deg);
    margin-left: -3px; 
}
.scene-arrow:hover { 
    transform: translateY(-50%) scale(1.08); 
}
.scene-dots {
    position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
    display: flex; gap: 10px; z-index: 5;
}
.scene-dot {
    width: 10px; height: 10px; border-radius: 50%;
    background: rgba(255,255,255,.35); cursor: pointer; transition: all .2s;
}
.scene-dot.active { background: var(--accent); width: 28px; border-radius: 5px; }

/* ========== 成稿对比 ========== */
.compare {
    background: #fff;
}
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.compare-card {
    background: #eaf2fd; border-radius: var(--radius); padding: 36px;
    min-height: 340px; display: flex; flex-direction: column;
}
.compare-tag {
    display: inline-block; padding: 5px 16px; background: var(--primary);
    color: #fff; border-radius: 999px; font-size: 13px; margin-bottom: 24px;
    align-self: flex-start;
}
.wave { flex: 1; display: flex; align-items: center; gap: 8px; padding: 0 16px; }
.wave span { display: block; width: 8px; border-radius: 4px; background: linear-gradient(180deg, #4a8fe7, #14366b); }
.wave span:nth-child(1)  { height: 24px; }
.wave span:nth-child(2)  { height: 55px; }
.wave span:nth-child(3)  { height: 95px; }
.wave span:nth-child(4)  { height: 65px; }
.wave span:nth-child(5)  { height: 130px; }
.wave span:nth-child(6)  { height: 80px; }
.wave span:nth-child(7)  { height: 150px; }
.wave span:nth-child(8)  { height: 70px; }
.wave span:nth-child(9)  { height: 110px; }
.wave span:nth-child(10) { height: 50px; }
.wave span:nth-child(11) { height: 85px; }
.wave span:nth-child(12) { height: 130px; }
.wave span:nth-child(13) { height: 60px; }
.wave span:nth-child(14) { height: 40px; }
.wave span:nth-child(15) { height: 24px; }
.audio-player { flex: 1; display: flex; align-items: center; justify-content: center; padding: 0 20px; }
.audio-player audio { width: 100%; max-width: 420px; }
.wave-visual { display: flex; align-items: center; justify-content: center; gap: 20px; padding: 20px; height: 160px; flex-shrink: 0; background: #d6e4f7; border-radius: 12px; margin: 20px 0; }
.wave-bars { display: flex; align-items: center; gap: 4px; height: 100px; justify-content: center; }
.wave-bars span { display: block; width: 5px; border-radius: 3px; background: #14366b; height: 30px; }
.wave-play { width: 50px; height: 50px; border-radius: 50%; background: var(--primary); color: #fff; border: none; cursor: pointer; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.wave-play svg { width: 24px; height: 24px; }
.wave-play.playing svg path { d: path("M6 19h4V5H6v14zm8-14v14h4V5h-4z"); }
.doc {
    flex: 1; background: #fff; border-radius: 12px; padding: 24px;
    box-shadow: inset 0 0 0 1px rgba(10,42,94,.06);
}
.doc-title { font-size: 15px; color: var(--primary); margin-bottom: 14px; }
.doc-line { font-size: 13px; color: #445; margin-bottom: 10px; line-height: 1.6; }
.compare-note { text-align: center; color: var(--text-light); font-size: 13px; margin-top: 20px; }

/* ========== 案例展示 ========== */
.cases {
    background: radial-gradient(circle at 100% 100%, rgba(34,197,94,.12), transparent 50%), var(--bg-soft);
}
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
    background: #fff; border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s;
}
.case-card:hover { transform: translateY(-4px); box-shadow: 0 14px 36px rgba(10,42,94,.14); }
.case-cover { height: 180px; overflow: hidden; background: var(--primary-light); }
.case-cover img { width: 100%; flex: 1; object-fit: cover; }
.case-cover-ph {
    width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
    color: #9ab; font-size: 15px;
}
.case-info { padding: 20px 22px 24px; }
.case-title { font-size: 17px; color: var(--primary); margin-bottom: 8px; line-height: 1.4; }
.case-desc {
    font-size: 13px; color: var(--text-light); margin-bottom: 10px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.case-date { font-size: 12px; color: #9ab; }
.cases-empty { text-align: center; color: var(--text-light); padding: 40px 0; }
.cases-head {
    position: relative; display: flex; align-items: center; justify-content: center;
    margin-bottom: 14px;
}
.cases-head .section-title { margin-bottom: 0; }
.cases-more {
    position: absolute; right: 0; top: 50%; transform: translateY(-50%);
    display: flex;
}
.cases-more .btn { padding: 9px 20px; font-size: 14px; }
.cases-more svg { width: 15px; height: 15px; }

/* ========== 客户 Logo 墙 ========== */
.clients {
    background: #0a2a5e;
    color: #fff;
}
.clients .section-title { color: #fff; }
.clients .section-desc { color: rgba(255,255,255,.75); }
.clients-grid {
    display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px;
    max-width: 1100px; margin: 0 auto;
}
.client-tag {
    padding: 26px 16px; text-align: center;
    background: rgba(255,255,255,.1); border-radius: 12px;
    color: #fff; font-size: 15px;
}
.client-group { margin-bottom: 36px; }
.client-group-title {
    font-size: 16px; color: #fff; text-align: center;
    margin-bottom: 18px; font-weight: 500;
}
.client-logo-item {
    background: transparent; border: none; border-radius: 12px;
    padding: 0; display: flex; align-items: center; justify-content: center;
    min-height: 80px; overflow: hidden;
}
.client-logo-item img {
    width: 100%; height: 100%; object-fit: cover; display: block;
}
.client-tabs {
    display: flex; justify-content: center; gap: 40px; margin: 20px 0 30px; flex-wrap: wrap;
}
.client-tab {
    padding: 10px 4px; border: none; background: transparent;
    color: rgba(255,255,255,.85); font-size: 16px; cursor: pointer; position: relative;
    transition: color .25s;
}
.client-tab::after {
    content: ''; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px;
    background: var(--accent); transform: scaleX(0); transition: transform .25s;
}
.client-tab.active { color: var(--accent); font-weight: 600; }
.client-tab.active::after { transform: scaleX(1); }
.client-panel { display: none; }
.client-panel.active { display: block; }
.client-panel-wrap {
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.15);
    border-radius: 20px;
    padding: 30px;
    max-width: 1100px;
    margin: 0 auto;
    backdrop-filter: blur(10px);
}
.client-panel-wrap .client-tabs { margin-top: 0; }

/* ========== 报价 ========== */
.pricing {
    background: linear-gradient(135deg, #d9f5e4 0%, #ffffff 40%, #ffffff 100%);
}
.pricing-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.price-card {
    background: linear-gradient(180deg, #eaf4ff 0%, #f5faff 100%);
    border-radius: var(--radius); padding: 30px 26px 20px;
    text-align: center;
}
.price-card h3 { font-size: 20px; color: var(--primary); margin-bottom: 8px; }
.price-desc { color: var(--accent); font-size: 15px; margin-bottom: 18px; font-weight: 600; }
.price-card ul { text-align: left; margin: 0 auto; display: inline-block; }
.price-card ul li {
    padding: 5px 0 5px 20px; position: relative; font-size: 14px; color: #333;
}
.price-card ul li::before {
    content: '•'; position: absolute; left: 6px; color: var(--accent);
}
.price-img { width: 100%; max-width: 140px; height: auto; margin: 16px auto 0; display: block; }
.price-card ul li::before {
    content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700;
}

/* ========== 关于我们 ========== */
.about {
    background: #0a2a5e;
    color: #fff; padding: 60px 0;
}
.about-inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: 60px; align-items: center; }
.about-text > p.about-bigtitle {
    font-size: 72px; font-weight: 700; color: #fff; line-height: 1;
    margin-bottom: 18px; letter-spacing: 1px;
}
.about-text h2 { font-size: 26px; margin-bottom: 22px; font-weight: 500; }
.about-text > p { color: rgba(255,255,255,.85); margin-bottom: 30px; font-size: 16px; }
.about-photos { display: flex; gap: 12px; height: 320px; }
.about-photo {
    flex: 1; border-radius: 18px; overflow: hidden; cursor: pointer;
    transition: flex .4s ease;
}
.about-photo.active { flex: 2.2; }
.about-photo img {
    width: 100%; height: 100%; object-fit: cover; display: block;
}

/* ========== 底部（独立一屏） ========== */
.site-footer {
    background: #0a2a5e;
    color: rgba(255,255,255,.75);
    min-height: 100vh; scroll-snap-align: start;
    display: flex; flex-direction: column; justify-content: center;
    padding: 80px 0 0; position: relative;
}
.footer-head { text-align: center; margin-bottom: 50px; }
.footer-eyebrow {
    color: var(--accent); font-size: 13px; letter-spacing: 4px; margin-bottom: 12px;
}
.footer-head h2 { font-size: 36px; color: #fff; margin-bottom: 10px; }
.footer-sub { color: rgba(255,255,255,.65); font-size: 15px; }
.footer-inner {
    display: grid; grid-template-columns: 0.8fr 1.6fr; gap: 50px;
    padding-bottom: 50px; align-items: stretch;
}
.footer-left { display: flex; flex-direction: column; gap: 20px; }
.footer-brand-logo { display: block; }
.footer-qr-wrap { display: flex; justify-content: flex-start; }
.footer-qrcode {
    width: 140px; height: 140px; background: #fff; border-radius: 12px; padding: 8px;
}
.footer-qrcode.ph {
    display: flex; align-items: center; justify-content: center;
    color: #999; font-size: 13px; padding: 0;
}
.footer-contact { margin-top: 8px; }
.contact-line {
    display: flex; align-items: center; gap: 8px; margin-bottom: 12px; font-size: 14px; color: rgba(255,255,255,.85);
}
.contact-icon { width: 16px; height: 16px; color: rgba(255,255,255,.7); flex-shrink: 0; }
.contact-line a { color: #fff; }
.footer-map {
    position: relative; border-radius: 16px; overflow: hidden; min-height: 440px;
    box-shadow: 0 8px 30px rgba(0,0,0,.3);
}
.footer-map iframe { display: block; width: 100%; height: 100%; min-height: 440px; border: 0; }
.map-open {
    position: absolute; right: 16px; bottom: 16px;
    background: var(--accent); color: #fff; padding: 5px 10px; border-radius: 999px;
    font-size: 14px; box-shadow: 0 4px 14px rgba(34,197,94,.4); z-index: 2;
}
.map-open:hover { transform: translateY(-1px); }
.map-placeholder {
    width: 100%; height: 100%; min-height: 440px; background: rgba(255,255,255,.06);
    display: flex; align-items: center; justify-content: center;
    color: rgba(255,255,255,.5);
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.3); padding: 20px 0;
    text-align: center; font-size: 13px; color: rgba(255,255,255,.55);
    margin-top: auto;
}
.footer-bottom p { margin: 0; display: inline; }
.filing { display: inline; margin-left: 10px; }
.filing a { margin: 0 8px; color: rgba(255,255,255,.55); }
.filing a:hover { color: #fff; }
/* ========== 右下角浮窗 ========== */
.float-bar {
    position: fixed; right: 24px; bottom: 80px; z-index: 90;
    display: flex; flex-direction: column; gap: 10px;
}
.float-item {
    position: relative;
    width: 56px; height: 56px; border-radius: 50%;
    background: var(--primary); color: #fff;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    cursor: pointer; border: none; box-shadow: 0 6px 18px rgba(10,42,94,.3);
    transition: transform .2s;
}
.float-item:hover { transform: translateY(-2px); background: var(--primary-2); }
.float-icon { width: 22px; height: 22px; line-height: 1; }
.float-icon svg { width: 100%; flex: 1; min-height: 440px; }
.float-tip {
    position: absolute; right: calc(100% + 12px); top: 50%; transform: translateY(-50%);
    background: rgba(10,42,94,.92); color: #fff;
    padding: 6px 12px; border-radius: 6px; font-size: 12px; white-space: nowrap;
    opacity: 0; pointer-events: none; transition: opacity .2s;
}
.float-item:hover .float-tip { opacity: 1; }
.float-wechat .float-popup {
    position: absolute; right: calc(100% + 12px); top: 50%; transform: translateY(-50%);
    background: #fff; border-radius: 10px; padding: 10px; text-align: center;
    box-shadow: 0 8px 30px rgba(0,0,0,.2);
    opacity: 0; pointer-events: none; transition: opacity .2s; width: 140px;
}
.float-wechat:hover .float-popup { opacity: 1; }
.float-popup img { width: 120px; height: 120px; object-fit: contain; }
.float-popup-ph { width: 136px; height: 136px; background: #f5f5f5; display: flex; align-items: center; justify-content: center; color: #999; font-size: 12px; border-radius: 6px; margin: 0 auto; }
.float-popup p { font-size: 12px; color: #666; margin-top: 6px; }
.float-top { display: none; }
.float-top.show { display: flex; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
    .banner-title { font-size: 44px; }
    .service-card { min-height: 220px; }
    .stats-grid { grid-template-columns: repeat(3, 1fr); row-gap: 40px; }
    .scene-inner, .about-inner { grid-template-columns: 1fr; gap: 40px; }
    .pricing-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    html { scroll-snap-type: y mandatory; }
    body { font-size: 15px; }
    .section, .stats, .scene,.about,.site-footer { padding: 0; }
    .section-title { font-size: 28px; margin-bottom:0; }
    .section-desc { margin-bottom: 10px; font-size: 14px; }

    .nav-toggle { display: block; }
    .nav {
        position: fixed !important; top: var(--header-h) !important; right: 0 !important; bottom: 0 !important;
        width: 50vw !important; min-width: 200px !important; height: calc(100vh - 68px) !important; min-height: 400px !important; background: #fff !important; opacity: 1 !important; flex-direction: column;
        align-items: flex-start; padding: 28px; gap: 20px;
        box-shadow: -4px 0 20px rgba(0,0,0,.08);
        transform: translateX(100%); transition: transform .25s;
    }
    .nav.open { transform: translateX(0) !important; z-index: 9999 !important; }
    .nav-link { font-size: 16px; color: #333 !important; }
    .nav.open .nav-link.active { color: var(--primary) !important; }
    .nav-cta { margin-top: 8px; }

    .banner-title { font-size: 36px; letter-spacing: 2px; }
    .banner-sub { font-size: 15px; gap: 0; }
    .banner-sub span { padding: 0 10px; }
    .btn { padding: 5px 20px; font-size: 15px; }

    .service-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
    .service-card { min-height: 200px; flex: none !important; }
    .service-overlay { padding: 20px; }
    .service-overlay h3 { font-size: 18px; }
    .service-short { font-size: 13px; }
    .service-card .service-detail { display: none !important; }
    .service-card.open .service-detail { display: block !important; }
    .service-card.open h3, .service-card.open .service-short { display: none !important; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); row-gap: 32px; }
    .stat-num { font-size: 38px; }

    .scene-text h2, .about-text h2 { font-size: 28px; margin-bottom: 15px; }
    .about-text > p.about-bigtitle { font-size: 36px; visibility: hidden; }
    .about-text > p { margin-bottom: 15px;font-size: 14px; line-height: 1.5;}
    .about-photos {height: auto;}
    .scene-current { font-size: 38px; }
    .scene-circle { width: 100%; max-width: 420px; height: 240px; border-radius: 120px; box-shadow: unset; }
    .scene-slide img { min-height: 240px; object-fit: contain; }
    .scene-arrow { width: 50px; height: 50px; font-size: 22px; right: 0; }

    .compare-grid { grid-template-columns: 1fr; gap: 14px; }
    .compare-card { padding: 20px; min-height: 180px; }
    .compare-tag { margin-bottom: 10px; font-size: 12px; padding: 3px 10px; }
    .doc { padding: 14px; }
    .doc-title { font-size: 13px; }
    .doc-line { font-size: 12px; margin-bottom: 6px; }
    .cases {padding-top: 80px;}
    .cases-grid { grid-template-columns: 1fr; gap: 14px; }
    .cases-head { margin-bottom: 10px; }
    .cases-head .section-title { font-size: 28px; }
    .cases-more .btn { padding: 6px 14px; font-size: 12px; border-radius: 999px; }
    .cases-more svg { width: 13px; height: 13px; }
    .clients-grid { grid-template-columns: 1fr 1fr; }
    .client-tabs { gap: 16px !important; }
    .client-tab { font-size: 14px !important; padding: 8px 2px !important; }
    .client-logo-item { min-height: 0; aspect-ratio: 2.5/1; }
    .clients { min-height: 100vh !important; overflow: hidden; }
    .client-panel-wrap { padding: 16px; min-height: 500px; overflow: hidden; }
    .client-panel { min-height: 260px; }
    .pricing-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .price-card { padding: 12px 10px; }
    .price-card h3 { font-size: 14px; margin-bottom: 4px; }
    .price-desc { font-size: 11px; margin-bottom: 6px; }
    .price-card ul li { font-size: 11px; padding: 2px 0 2px 14px; }
    .price-img { max-width: 80px; margin: 8px auto 0; }
    .about-photos { grid-template-columns: 1fr; }
    .about-photos img { height: 180px; }
    .compare, .pricing { padding-top: 20px !important; }
    .footer-head {margin-top: 20px; margin-bottom: 20px;}
    .footer-inner { grid-template-columns: 1fr; gap: 20px; }
    .footer-left { flex-direction: column; align-items: stretch; gap: 16px; }
    .footer-brand-row { display: flex; flex-direction: row; align-items: center; gap: 16px; }
    .footer-brand { flex: 2; }
    .footer-brand-logo { width: 100%; height: auto; }
    .footer-qr-wrap { flex: 1; }
    .footer-qrcode { width: 100%; height: auto; aspect-ratio: 1; }
    .footer-contact { width: 100%; }
    .footer-map { min-height: 260px; }
    .footer-head h2 { font-size: 20px !important; }
    .footer-sub { font-size: 13px !important; }
    .footer-head h2 { font-size: 26px; }

    .float-bar { right: 14px; bottom: 20px; }
    .float-item { width: 48px; height: 48px;}
}

/* ============================================================
   案例列表页
   ============================================================ */
.case-page-wrap {
    max-width: 1140px; margin: 0 auto;
    padding: 112px 24px 80px; background: #fff; min-height: 100vh;
}
.case-page-head { text-align: center; margin-bottom: 44px; }
.case-page-head h1 { font-size: 34px; font-weight: 700; color: var(--primary); letter-spacing: 2px; }
.case-page-head p { color: var(--text-light); font-size: 14px; margin-top: 10px; }
.case-list { grid-template-columns: repeat(3, 1fr); }
.case-list .case-card { display: block; }
.case-list .case-cover img { width: 100%; height: 100%; object-fit: cover; }
.case-empty { text-align: center; padding: 60px 0 20px; color: var(--text-light); }

/* ---- web 端分页 ---- */
.case-pager {
    display: flex; justify-content: center; align-items: center; flex-wrap: wrap;
    gap: 8px; margin-top: 50px;
}
.case-pager-btn, .case-pager-num {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 42px; height: 42px; padding: 0 16px;
    border-radius: 10px; background: #fff; color: var(--primary); font-size: 14px;
    box-shadow: 0 4px 14px rgba(10,42,94,.1); transition: all .2s;
}
.case-pager-num { padding: 0 8px; }
a.case-pager-btn:hover, a.case-pager-num:hover { background: var(--primary); color: #fff; }
.case-pager-num.active { background: var(--primary); color: #fff; font-weight: 600; box-shadow: 0 6px 18px rgba(10,42,94,.24); }
.case-pager-btn.disabled { color: #b9c4d4; box-shadow: none; cursor: not-allowed; }
.case-pager-ellipsis { color: #9ab; letter-spacing: 2px; padding: 0 4px; }

/* ---- h5 端上滑加载 ---- */
.case-loadmore {
    display: none; align-items: center; justify-content: center; gap: 10px;
    margin-top: 26px; font-size: 14px; color: var(--text-light);
}
.case-loadmore-spin {
    display: none; width: 16px; height: 16px; border-radius: 50%;
    border: 2px solid rgba(10,42,94,.15); border-top-color: var(--primary);
    animation: caseSpin .8s linear infinite;
}
.case-loadmore.loading .case-loadmore-spin { display: block; }
@keyframes caseSpin { to { transform: rotate(360deg); } }

@media (max-width: 1024px) {
    .case-list { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .case-page-wrap { padding: 96px 16px 50px; }
    .case-page-head { margin-bottom: 26px; }
    .case-page-head h1 { font-size: 26px; }
    .case-page-head p { font-size: 13px; }
    .case-list { grid-template-columns: 1fr; gap: 14px; }
    .case-pager { display: none; }
    .case-loadmore { display: flex; }
}