/* ========== 领界互娱 暗色 showreel 主题 ========== */
:root {
    --bg: #0a0a0c;
    --bg-soft: #121216;
    --fg: #f5f5f7;
    --fg-dim: #9a9aa3;
    --line: rgba(255, 255, 255, .12);
    --accent: #e8e8ec;
    --maxw: 1280px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    background: var(--bg);
    color: var(--fg);
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; }

/* ---------- 头部导航 ---------- */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: linear-gradient(rgba(10,10,12,.85), rgba(10,10,12,0));
    backdrop-filter: blur(6px);
}
.header-inner {
    max-width: var(--maxw); margin: 0 auto; padding: 20px 32px;
    display: flex; align-items: center; justify-content: space-between;
}
.logo { font-size: 22px; font-weight: 800; letter-spacing: 2px; }
.main-nav { display: flex; gap: 36px; align-items: center; }
.main-nav a {
    font-size: 15px; color: var(--fg-dim); letter-spacing: 1px;
    transition: color .25s;
}
.main-nav a:hover, .main-nav a.on { color: var(--fg); }
.main-nav .nav-admin { opacity: .5; font-size: 13px; }
.nav-toggle {
    display: none; background: none; border: none; color: var(--fg);
    font-size: 24px; cursor: pointer;
}

/* ---------- Hero ---------- */
.hero { position: relative; height: 100vh; min-height: 560px; overflow: hidden; }
.hero-video, .hero-fallback {
    position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
}
.hero-fallback {
    background:
        radial-gradient(ellipse at 30% 20%, #1d1d28 0%, transparent 55%),
        radial-gradient(ellipse at 75% 80%, #181822 0%, transparent 50%),
        var(--bg);
}
.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(rgba(10,10,12,.25), rgba(10,10,12,.65) 90%);
}
.hero-content {
    position: absolute; inset: 0; z-index: 2;
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    text-align: center; padding: 0 24px;
}
.hero-title {
    font-size: clamp(48px, 10vw, 120px);
    font-weight: 900; letter-spacing: 6px; line-height: 1.1;
}
.hero-slogan {
    margin-top: 18px; font-size: clamp(15px, 2.2vw, 24px);
    color: var(--fg-dim); letter-spacing: 6px;
}
.hero-scroll {
    position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%);
    z-index: 2; font-size: 28px; color: var(--fg-dim);
    animation: bounce 2s infinite;
}
@keyframes bounce {
    0%, 100% { transform: translate(-50%, 0); }
    50% { transform: translate(-50%, 10px); }
}

/* ---------- 通用 section ---------- */
.section { max-width: var(--maxw); margin: 0 auto; padding: 96px 32px; }
.section-head {
    display: flex; align-items: baseline; justify-content: space-between;
    margin-bottom: 48px;
}
.section-head h2, .page-hero h1 {
    font-size: clamp(32px, 5vw, 56px); font-weight: 800; letter-spacing: 2px;
}
.more-link, .btn-line {
    color: var(--fg-dim); border-bottom: 1px solid var(--line);
    padding-bottom: 4px; transition: color .25s;
}
.more-link:hover, .btn-line:hover { color: var(--fg); }
.page-hero {
    max-width: var(--maxw); margin: 0 auto; padding: 170px 32px 30px;
}
.page-hero p { color: var(--fg-dim); margin-top: 12px; letter-spacing: 2px; }
.empty-hint { color: var(--fg-dim); padding: 60px 0; text-align: center; }

/* ---------- 作品网格 ---------- */
.works-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.work-card { display: block; }
.work-thumb {
    position: relative; overflow: hidden;
    aspect-ratio: 16 / 9; background: var(--bg-soft);
}
.work-thumb img, .work-thumb video {
    position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
    transition: transform .5s ease, opacity .3s;
}
.work-thumb img { z-index: 1; }
.hover-preview { z-index: 2; opacity: 0; }
.work-card:hover .work-thumb img { transform: scale(1.05); }
.work-card:hover .hover-preview { opacity: 1; }
.work-play {
    position: absolute; right: 14px; bottom: 14px; z-index: 3;
    width: 40px; height: 40px; border-radius: 50%;
    border: 1px solid var(--line); background: rgba(10,10,12,.55);
    color: var(--fg); font-size: 13px; line-height: 38px; text-align: center;
}
.work-meta { padding: 16px 2px; }
.work-meta h3 { font-size: 18px; font-weight: 700; }
.work-meta p { color: var(--fg-dim); font-size: 13px; margin-top: 4px; letter-spacing: 1px; }

/* ---------- 筛选 tab ---------- */
.filter-tabs { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 44px; }
.filter-tabs a {
    padding: 8px 22px; border: 1px solid var(--line); border-radius: 999px;
    color: var(--fg-dim); font-size: 14px; transition: all .25s;
}
.filter-tabs a:hover { color: var(--fg); border-color: var(--fg-dim); }
.filter-tabs a.on { background: var(--fg); color: #0a0a0c; border-color: var(--fg); }

/* ---------- 服务 ---------- */
.section-services { border-top: 1px solid var(--line); }
.service-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
}
.service-item {
    border: 1px solid var(--line); padding: 32px 26px;
    background: var(--bg-soft); transition: border-color .3s;
}
.service-item:hover { border-color: var(--fg-dim); }
.service-item h3 { font-size: 19px; margin-bottom: 12px; letter-spacing: 1px; }
.service-item p { color: var(--fg-dim); font-size: 14px; }

/* ---------- 关于 ---------- */
.about-excerpt { max-width: 760px; }
.about-excerpt p { font-size: 18px; color: var(--fg-dim); margin-bottom: 28px; }
.about-lead { font-size: 20px; max-width: 820px; }
.about-contact { text-align: center; }
.about-contact h2 { font-size: clamp(26px, 4vw, 42px); margin-bottom: 24px; }

/* ---------- 案例详情 ---------- */
.case-detail { max-width: 1080px; margin: 0 auto; padding: 150px 32px 80px; }
.case-player { background: #000; }
.case-player video, .case-player img { width: 100%; max-height: 70vh; object-fit: contain; }
.case-info { padding: 40px 0; }
.case-cat { color: var(--fg-dim); letter-spacing: 3px; font-size: 14px; }
.case-info h1 { font-size: clamp(30px, 4.5vw, 48px); margin: 10px 0 24px; }
.case-info dl { display: flex; gap: 12px; margin-bottom: 28px; color: var(--fg-dim); }
.case-info dt::after { content: "："; }
.case-info dd { color: var(--fg); margin-right: 32px; }
.case-summary h3 { margin-bottom: 10px; font-size: 17px; }
.case-summary p { color: var(--fg-dim); }
.case-nav {
    display: flex; justify-content: space-between; gap: 16px;
    border-top: 1px solid var(--line); padding-top: 28px;
}
.case-nav a { color: var(--fg-dim); max-width: 40%; transition: color .25s; }
.case-nav a:hover { color: var(--fg); }

/* ---------- 联系 ---------- */
.contact-section {
    display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start;
}
.contact-label { color: var(--fg-dim); letter-spacing: 2px; font-size: 14px; margin-top: 28px; }
.contact-label:first-child { margin-top: 0; }
.contact-phone {
    font-size: clamp(30px, 5vw, 52px); font-weight: 800; letter-spacing: 1px;
    display: inline-block; margin-top: 6px;
}
.contact-address { font-size: 18px; margin-top: 6px; }
.contact-qr { margin-top: 32px; }
.contact-qr img { width: 150px; border: 1px solid var(--line); }
.contact-qr span { display: block; color: var(--fg-dim); font-size: 13px; margin-top: 8px; }

.contact-form-wrap {
    border: 1px solid var(--line); background: var(--bg-soft); padding: 40px;
}
.contact-form-wrap h2 { font-size: 24px; margin-bottom: 24px; }
.contact-form label { display: block; color: var(--fg-dim); font-size: 14px; margin: 18px 0 6px; }
.contact-form input, .contact-form textarea {
    width: 100%; background: var(--bg); border: 1px solid var(--line);
    color: var(--fg); padding: 12px 14px; font-size: 15px; font-family: inherit;
    border-radius: 4px;
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--fg-dim); }
.btn-solid {
    margin-top: 24px; background: var(--fg); color: #0a0a0c; border: none;
    padding: 14px 44px; font-size: 15px; font-weight: 700; letter-spacing: 2px;
    cursor: pointer; border-radius: 4px; transition: opacity .25s;
}
.btn-solid:hover { opacity: .85; }
.form-ok { color: #6fd18a; margin: 12px 0; }
.form-err { color: #e06c6c; margin: 12px 0; }

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--line); max-width: var(--maxw); margin: 60px auto 0; padding: 72px 32px 32px; }
.footer-cta { text-align: center; margin-bottom: 64px; }
.footer-label { color: var(--fg-dim); letter-spacing: 3px; margin-bottom: 10px; }
.footer-phone {
    font-size: clamp(34px, 6vw, 64px); font-weight: 900; letter-spacing: 1px;
}
.footer-info {
    display: flex; justify-content: space-between; align-items: flex-start;
    gap: 32px; color: var(--fg-dim); padding-bottom: 40px;
    border-bottom: 1px solid var(--line); flex-wrap: wrap;
}
.footer-info strong { color: var(--fg); font-size: 18px; letter-spacing: 1px; }
.footer-qr img { width: 110px; border: 1px solid var(--line); }
.footer-qr span { display: block; font-size: 12px; margin-top: 6px; text-align: center; }
.footer-copy { text-align: center; color: var(--fg-dim); font-size: 13px; padding-top: 28px; }

/* ---------- 动效 ---------- */
.fade-in { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.fade-in.visible { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
    .works-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
    .service-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .contact-section { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 640px) {
    .header-inner { padding: 16px 20px; }
    .nav-toggle { display: block; }
    .main-nav {
        display: none; position: absolute; top: 100%; left: 0; right: 0;
        flex-direction: column; gap: 0; background: rgba(10,10,12,.97);
        border-bottom: 1px solid var(--line); padding: 12px 0;
    }
    .main-nav.open { display: flex; }
    .main-nav a { padding: 14px 24px; width: 100%; }
    .section { padding: 64px 20px; }
    .page-hero { padding: 140px 20px 20px; }
    .works-grid { grid-template-columns: 1fr; }
    .service-grid { grid-template-columns: 1fr; }
    .case-detail { padding: 120px 20px 60px; }
    .case-nav { flex-direction: column; }
    .case-nav a { max-width: 100%; }
    .contact-form-wrap { padding: 26px; }
}

/* ---------- 业务能力页 services.php ---------- */
.svc-hero { position: relative; height: 62vh; min-height: 420px; overflow: hidden; }
.svc-hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.svc-hero-content {
    position: absolute; inset: 0; z-index: 2;
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    text-align: center; padding: 0 24px;
}
.svc-hero-content h1 { font-size: clamp(40px, 7vw, 84px); font-weight: 900; letter-spacing: 4px; }
.svc-hero-sub {
    margin-top: 14px; font-size: clamp(16px, 2.4vw, 26px);
    letter-spacing: 6px; color: var(--fg);
}
.svc-hero-tag { margin-top: 10px; font-size: 14px; letter-spacing: 2px; color: var(--fg-dim); }

/* 业务线板块（左右交替） */
.biz-block {
    display: grid; grid-template-columns: 5fr 6fr; gap: 56px;
    align-items: center; padding: 56px 0;
    border-top: 1px solid var(--line);
}
.biz-block.rev { grid-template-columns: 6fr 5fr; }
.biz-block.rev .biz-media { order: 2; }
.biz-block.rev .biz-text { order: 1; }
.biz-media { overflow: hidden; background: var(--bg-soft); }
.biz-media img {
    width: 100%; aspect-ratio: 3 / 4; object-fit: cover; object-position: top;
    transition: transform .5s ease;
}
.biz-block:hover .biz-media img { transform: scale(1.03); }
.biz-no { color: var(--fg-dim); letter-spacing: 3px; font-size: 14px; }
.biz-no span { margin-left: 10px; font-size: 12px; opacity: .7; }
.biz-text h3 { font-size: clamp(26px, 3.5vw, 40px); margin: 10px 0 14px; letter-spacing: 2px; }
.biz-desc { color: var(--fg-dim); font-size: 16px; margin-bottom: 20px; }
.biz-items { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; }
.biz-items li {
    border: 1px solid var(--line); border-radius: 999px;
    padding: 7px 18px; font-size: 14px; color: var(--fg-dim);
    transition: all .25s;
}
.biz-items li:hover { color: var(--fg); border-color: var(--fg-dim); }

/* 差异化优势 */
.adv-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.adv-item {
    border: 1px solid var(--line); background: var(--bg-soft);
    padding: 28px 22px; transition: border-color .3s;
}
.adv-item:hover { border-color: var(--fg-dim); }
.adv-icon { font-size: 26px; display: block; margin-bottom: 14px; }
.adv-item h3 { font-size: 16px; margin-bottom: 8px; line-height: 1.4; }
.adv-item p { color: var(--fg-dim); font-size: 13px; }

/* 交付流程时间线 */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative; }
.step { padding: 0 26px; position: relative; }
.step::before {
    content: ""; position: absolute; top: 22px; left: 0; right: 0;
    height: 1px; background: var(--line);
}
.step:first-child::before { left: 22px; }
.step:last-child::before { right: auto; width: 22px; }
.step-no {
    display: inline-block; width: 44px; height: 44px; line-height: 42px;
    text-align: center; border: 1px solid var(--fg-dim); border-radius: 50%;
    background: var(--bg); font-size: 16px; font-weight: 700;
    position: relative; z-index: 1; margin-bottom: 18px;
}
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { color: var(--fg-dim); font-size: 14px; }

/* 合作对象 */
.client-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.client-card {
    border: 1px solid var(--line); background: var(--bg-soft); padding: 34px 30px;
    transition: border-color .3s;
}
.client-card:hover { border-color: var(--fg-dim); }
.client-card h3 { font-size: 20px; margin-bottom: 10px; }
.client-desc { color: var(--fg-dim); font-size: 14px; margin-bottom: 18px; min-height: 44px; }
.client-card ul { list-style: none; }
.client-card li {
    padding: 8px 0; border-top: 1px solid var(--line);
    font-size: 14px; letter-spacing: 1px;
}
.client-card li::before { content: "→ "; color: var(--fg-dim); }
.svc-cta { text-align: center; margin-top: 56px; }
.svc-cta .field-hint { margin-top: 14px; }

/* ---------- 首页业务线卡片 ---------- */
.bline-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.bline-card { display: block; }
.bline-thumb {
    overflow: hidden; aspect-ratio: 3 / 4; background: var(--bg-soft);
    position: relative;
}
.bline-thumb img {
    width: 100%; height: 100%; object-fit: cover; object-position: top;
    transition: transform .5s ease;
}
.bline-card:hover .bline-thumb img { transform: scale(1.05); }
.bline-thumb::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(rgba(10,10,12,0) 55%, rgba(10,10,12,.85));
}
.bline-meta { position: absolute; left: 0; right: 0; bottom: 0; padding: 18px; z-index: 2; }
.bline-meta h3 { font-size: 19px; }
.bline-meta p { color: var(--fg-dim); font-size: 12px; letter-spacing: 1px; margin-top: 2px; }
.bline-more { display: block; text-align: center; margin-top: 40px; }

/* ---------- 首页优势简版 ---------- */
.adv-mini { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.adv-mini .adv-item { text-align: center; padding: 24px 16px; }

/* ---------- 联系页客户类型 ---------- */
.who-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-bottom: 40px; }
.who-card {
    border: 1px solid var(--line); background: var(--bg-soft); padding: 28px 26px;
}
.who-card h3 { font-size: 18px; margin-bottom: 12px; }
.who-card ul { list-style: none; }
.who-card li { color: var(--fg-dim); font-size: 14px; padding: 6px 0; border-top: 1px solid var(--line); }
.who-card li::before { content: "→ "; }

/* ---------- 关于页 ---------- */
.about-grid { display: grid; grid-template-columns: 7fr 5fr; gap: 56px; align-items: center; }
.about-grid .about-media { overflow: hidden; }
.about-grid .about-media img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; object-position: top; }
.principle-list { list-style: none; margin-top: 8px; }
.principle-list li {
    padding: 16px 0; border-top: 1px solid var(--line);
}
.principle-list strong { display: block; font-size: 16px; margin-bottom: 4px; }
.principle-list span { color: var(--fg-dim); font-size: 14px; }

/* ---------- services 响应式 ---------- */
@media (max-width: 1080px) {
    .adv-grid, .adv-mini { grid-template-columns: repeat(3, 1fr); }
    .bline-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 960px) {
    .biz-block, .biz-block.rev { grid-template-columns: 1fr; gap: 28px; padding: 40px 0; }
    .biz-block.rev .biz-media { order: 0; }
    .biz-block.rev .biz-text { order: 1; }
    .biz-media img { aspect-ratio: 4 / 3; }
    .steps { grid-template-columns: 1fr; gap: 28px; }
    .step { padding: 0 0 0 62px; }
    .step::before { top: 22px; left: 22px; right: auto; bottom: -28px; width: 1px; height: auto; }
    .step:last-child::before { display: none; }
    .client-grid, .who-grid { grid-template-columns: 1fr; }
    .client-desc { min-height: 0; }
    .about-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 640px) {
    .adv-grid, .adv-mini { grid-template-columns: 1fr; }
    .bline-grid { grid-template-columns: 1fr; }
    .svc-hero { height: 48vh; }
}

.hero-tagline { font-size: clamp(13px, 1.6vw, 18px); letter-spacing: 3px; margin-top: 12px; }
.about-h2 { font-size: clamp(22px, 3vw, 32px); margin-bottom: 12px; }

/* ---------- 业务线深化（我们能做什么 / 适用场景） ---------- */
.biz-sub {
    font-size: 13px; color: var(--fg-dim); letter-spacing: 3px;
    margin: 22px 0 12px; text-transform: uppercase;
}
.biz-sub::before { content: "— "; }
.biz-scene { color: var(--fg-dim); font-size: 14px; border-left: 2px solid var(--line); padding-left: 14px; }

/* ---------- 行业解决方案 ---------- */
.ind-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.ind-item {
    border: 1px solid var(--line); background: var(--bg-soft);
    padding: 30px 26px; transition: border-color .3s;
}
.ind-item:hover { border-color: var(--fg-dim); }
.ind-item h3 { font-size: 20px; margin-bottom: 10px; letter-spacing: 1px; }
.ind-item p { color: var(--fg-dim); font-size: 14px; }

/* ---------- 实力数字 ---------- */
.stats-band {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
    border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
    padding: 56px 0;
}
.stat-item { text-align: center; padding: 0 16px; }
.stat-big {
    display: block; font-size: clamp(36px, 5vw, 60px); font-weight: 900;
    letter-spacing: 1px; line-height: 1.1;
}
.stat-item h3 { font-size: 16px; margin: 10px 0 6px; }
.stat-item p { color: var(--fg-dim); font-size: 13px; }

/* ---------- 内容生产工作流 ---------- */
.flow {
    display: flex; align-items: center; justify-content: center;
    gap: 18px; flex-wrap: wrap; padding: 20px 0 8px;
}
.flow-node { display: flex; align-items: center; gap: 12px; }
.flow-no {
    width: 48px; height: 48px; line-height: 46px; text-align: center;
    border: 1px solid var(--fg-dim); border-radius: 50%;
    font-size: 17px; font-weight: 700; background: var(--bg);
}
.flow-name { font-size: 19px; font-weight: 700; letter-spacing: 2px; }
.flow-arrow { color: var(--fg-dim); font-size: 20px; }
.flow-note {
    max-width: 780px; margin: 18px auto 0; text-align: center;
    color: var(--fg-dim); font-size: 15px;
}

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; }
.faq-item { border-top: 1px solid var(--line); }
.faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-item summary {
    cursor: pointer; list-style: none; padding: 20px 4px;
    font-size: 17px; font-weight: 600; position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: "+"; position: absolute; right: 6px; top: 50%;
    transform: translateY(-50%); font-size: 22px; font-weight: 300; color: var(--fg-dim);
}
.faq-item[open] summary::after { content: "−"; }
.faq-item p { color: var(--fg-dim); font-size: 15px; padding: 0 4px 22px; max-width: 720px; }

/* ---------- 首页 CTA ---------- */
.home-cta { text-align: center; padding: 20px 0; }
.home-cta h2 { font-size: clamp(28px, 4.5vw, 46px); margin-bottom: 14px; }
.home-cta > p { color: var(--fg-dim); margin-bottom: 30px; }
.home-cta-actions {
    display: flex; gap: 24px; justify-content: center; align-items: center;
    flex-wrap: wrap; margin-bottom: 18px;
}
.home-cta-actions .btn-line { font-size: 17px; }
.home-cta-more { color: var(--fg-dim); font-size: 14px; }
.home-cta-more:hover { color: var(--fg); }

/* ---------- 关于页制作实力 ---------- */
.strength-item { padding: 14px 0; border-top: 1px solid var(--line); }
.strength-item:first-child { border-top: none; }
.strength-item h3 { font-size: 17px; margin-bottom: 4px; letter-spacing: 1px; }
.strength-item p { color: var(--fg-dim); font-size: 14px; }
.about-contact-line { color: var(--fg-dim); }
.about-contact-line a { color: var(--fg); }

/* ---------- 页脚邮箱 ---------- */
.footer-email { margin-top: 12px; font-size: 18px; letter-spacing: 1px; }
.footer-email a { color: var(--fg-dim); }
.footer-email a:hover { color: var(--fg); }
.footer-contact-line { font-size: 13px; margin-top: 8px; color: var(--fg-dim); }
.footer-contact-line a:hover { color: var(--fg); }

/* ---------- 新增板块响应式 ---------- */
@media (max-width: 1080px) {
    .ind-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-band { grid-template-columns: repeat(2, 1fr); gap: 36px; }
}
@media (max-width: 640px) {
    .ind-grid { grid-template-columns: 1fr; }
    .stats-band { grid-template-columns: 1fr; }
    .flow { flex-direction: column; gap: 12px; }
    .flow-arrow { transform: rotate(90deg); }
}

/* ---------- about.php 新版排版 ---------- */
.about-hero { position: relative; height: 66vh; min-height: 440px; overflow: hidden; }
.about-hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.about-hero-content {
    position: absolute; inset: 0; z-index: 2;
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    text-align: center; padding: 0 24px;
}
.about-hero-content h1 {
    font-size: clamp(30px, 5.5vw, 64px); font-weight: 900;
    letter-spacing: 3px; line-height: 1.3;
}
.about-hero-sub {
    margin-top: 16px; font-size: clamp(14px, 2vw, 20px);
    color: var(--fg-dim); letter-spacing: 4px;
}

/* 我们是谁：图文并排 */
.who-grid2 { display: grid; grid-template-columns: 7fr 5fr; gap: 64px; align-items: center; }
.who-text h2 { font-size: clamp(28px, 4vw, 44px); margin: 10px 0 22px; letter-spacing: 2px; }
.who-text p { color: var(--fg-dim); font-size: 16px; margin-bottom: 16px; }
.who-text p:first-of-type { color: var(--fg); font-size: 18px; }
.who-text .btn-line { display: inline-block; margin-top: 10px; }
.who-media { overflow: hidden; }
.who-media img {
    width: 100%; aspect-ratio: 3 / 4; object-fit: cover;
    transition: transform .5s ease;
}
.who-grid2:hover .who-media img { transform: scale(1.03); }

/* 痛点列表 */
.pain-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.pain-item {
    border: 1px solid var(--line); background: var(--bg-soft);
    padding: 32px 28px; transition: border-color .3s;
}
.pain-item:hover { border-color: var(--fg-dim); }
.pain-item h3 { font-size: 19px; margin-bottom: 12px; }
.pain-item h3::before { content: "？ "; color: var(--fg-dim); }
.pain-item p { color: var(--fg-dim); font-size: 14px; }
.pain-conclusion {
    margin-top: 40px; text-align: center;
    font-size: clamp(18px, 2.6vw, 26px); font-weight: 700; letter-spacing: 1px;
}

/* 实力卡片 */
.strength-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.strength-card {
    border: 1px solid var(--line); background: var(--bg-soft);
    padding: 30px 24px; transition: border-color .3s;
}
.strength-card:hover { border-color: var(--fg-dim); }
.strength-card h3 { font-size: 17px; margin: 4px 0 10px; line-height: 1.4; }
.strength-card p { color: var(--fg-dim); font-size: 13px; }

/* 工作原则卡片 */
.principle-grid { list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.principle-card {
    border: 1px solid var(--line); background: var(--bg-soft);
    padding: 26px 20px; text-align: center; transition: border-color .3s;
}
.principle-card:hover { border-color: var(--fg-dim); }
.principle-no {
    display: inline-block; width: 34px; height: 34px; line-height: 32px;
    border: 1px solid var(--line); border-radius: 50%;
    font-size: 14px; color: var(--fg-dim); margin-bottom: 14px;
}
.principle-card h3 { font-size: 17px; margin-bottom: 8px; letter-spacing: 2px; }
.principle-card p { color: var(--fg-dim); font-size: 13px; }

/* 品牌宣言 + CTA */
.manifesto { text-align: center; padding: 30px 0 60px; }
.manifesto-big {
    font-size: clamp(24px, 4vw, 42px); font-weight: 800;
    letter-spacing: 2px; line-height: 1.6;
}
.manifesto-sub { margin-top: 16px; color: var(--fg-dim); font-size: 15px; letter-spacing: 1px; }
.about-cta {
    display: grid; grid-template-columns: 1fr auto; gap: 48px;
    align-items: center; border: 1px solid var(--line);
    background: var(--bg-soft); padding: 48px;
}
.about-cta-info h2 { font-size: clamp(24px, 3.5vw, 38px); margin-bottom: 12px; }
.about-cta-info p { color: var(--fg-dim); font-size: 15px; margin-bottom: 8px; }
.about-cta-mail { font-size: 20px; }
.about-cta-mail a { color: var(--fg); border-bottom: 1px solid var(--line); }

/* ---------- 企业微信二维码卡片 ---------- */
.wechat-card {
    border: 1px solid var(--line); background: var(--bg-soft);
    padding: 26px; text-align: center; max-width: 280px;
}
.wechat-card h3 { font-size: 16px; letter-spacing: 1px; margin-bottom: 16px; }
.wechat-qr {
    width: 168px; height: 168px; margin: 0 auto; overflow: hidden;
    border: 1px solid var(--line); background: var(--bg);
    display: flex; align-items: center; justify-content: center;
}
.wechat-qr img { width: 100%; height: 100%; object-fit: cover; }
.wechat-empty span { color: var(--fg-dim); font-size: 13px; line-height: 1.8; }
.wechat-note { margin-top: 14px; color: var(--fg-dim); font-size: 13px; }

/* 联系页邮箱放大 */
.contact-mail { font-size: 24px; font-weight: 700; }
.contact-mail a { color: var(--fg); }

/* 页脚邮箱主展示 */
.footer-mail-big {
    display: inline-block; font-size: clamp(24px, 4.5vw, 46px);
    font-weight: 900; letter-spacing: 1px; margin-top: 4px;
}
.footer-mail-big:hover { opacity: .85; }
.footer-cta-sub { margin-top: 12px; color: var(--fg-dim); font-size: 14px; letter-spacing: 1px; }

/* ---------- about 新版响应式 ---------- */
@media (max-width: 1080px) {
    .strength-grid { grid-template-columns: repeat(2, 1fr); }
    .principle-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 960px) {
    .who-grid2 { grid-template-columns: 1fr; gap: 32px; }
    .who-media img { aspect-ratio: 4 / 3; }
    .pain-list { grid-template-columns: 1fr; }
    .about-cta { grid-template-columns: 1fr; gap: 32px; padding: 32px; }
    .wechat-card { max-width: 100%; }
}
@media (max-width: 640px) {
    .strength-grid, .principle-grid { grid-template-columns: 1fr; }
    .about-hero { height: 52vh; }
}

/* ---------- 洞察栏目 insights.php ---------- */
.ins-group { margin-bottom: 64px; }
.ins-cat {
    font-size: clamp(24px, 3.5vw, 36px); letter-spacing: 2px;
    margin-bottom: 28px; padding-bottom: 14px; border-bottom: 1px solid var(--line);
}
.ins-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.ins-card {
    display: grid; grid-template-columns: 220px 1fr; gap: 24px;
    border: 1px solid var(--line); background: var(--bg-soft);
    padding: 20px; transition: border-color .3s; align-items: start;
}
.ins-card:hover { border-color: var(--fg-dim); }
.ins-thumb { overflow: hidden; background: var(--bg); }
.ins-thumb img {
    width: 100%; aspect-ratio: 3 / 4; object-fit: cover;
    transition: transform .5s ease;
}
.ins-card:hover .ins-thumb img { transform: scale(1.04); }
.ins-body { padding: 4px 0; }
.ins-tag {
    display: inline-block; font-size: 12px; letter-spacing: 2px;
    color: var(--fg-dim); border: 1px solid var(--line);
    border-radius: 999px; padding: 3px 12px; margin-bottom: 12px;
}
.ins-body h3 { font-size: 18px; line-height: 1.5; margin-bottom: 8px; }
.ins-body p {
    color: var(--fg-dim); font-size: 13px; line-height: 1.7;
    display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.ins-more {
    display: inline-block; margin-top: 12px; font-size: 13px;
    color: var(--fg-dim); letter-spacing: 1px;
}
.ins-card:hover .ins-more { color: var(--fg); }

/* services 业务线「相关洞察」 */
.biz-insight {
    display: inline-block; margin-top: 20px; font-size: 14px;
    color: var(--fg-dim); border-bottom: 1px solid var(--line); padding-bottom: 3px;
    transition: color .25s;
}
.biz-insight:hover { color: var(--fg); }

/* ---------- 文章详情 article.php ---------- */
.article { max-width: 880px; margin: 0 auto; padding: 150px 32px 80px; }
.article-head { margin-bottom: 36px; }
.article-head .ins-tag { margin: 18px 0 14px; }
.article-head h1 {
    font-size: clamp(28px, 4.5vw, 46px); line-height: 1.35; letter-spacing: 1px;
}
.article-excerpt { margin-top: 16px; color: var(--fg-dim); font-size: 16px; }
.article-cover { margin-bottom: 44px; }
.article-cover img {
    width: 100%; max-height: 70vh; object-fit: contain; background: var(--bg-soft);
}
.article-body h2 {
    font-size: clamp(22px, 3vw, 30px); margin: 44px 0 16px; letter-spacing: 1px;
    padding-top: 32px; border-top: 1px solid var(--line);
}
.article-body h2:first-child { border-top: none; padding-top: 0; margin-top: 0; }
.article-body p { color: var(--fg-dim); font-size: 16px; line-height: 1.9; margin-bottom: 14px; }
.article-body strong, .article-body b { color: var(--fg); font-weight: 700; }
.article-gallery { margin-top: 52px; }
.gallery-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.gallery-grid a { display: block; overflow: hidden; background: var(--bg-soft); }
.gallery-grid img {
    width: 100%; display: block; transition: transform .5s ease;
}
.gallery-grid a:hover img { transform: scale(1.03); }
.article-cta {
    margin-top: 64px; text-align: center;
    border: 1px solid var(--line); background: var(--bg-soft); padding: 48px 32px;
}
.article-cta h2 { font-size: clamp(22px, 3.5vw, 32px); margin-bottom: 10px; }
.article-cta > p { color: var(--fg-dim); margin-bottom: 26px; }
.article-related { margin-top: 64px; }
.rel-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

/* ---------- about 居中大改版 ---------- */
.center-sec { text-align: center; }
.center-h2 { font-size: clamp(30px, 4.5vw, 48px); letter-spacing: 2px; margin-bottom: 28px; }
.center-sub { color: var(--fg-dim); font-size: 16px; max-width: 760px; margin: 0 auto 28px; }
.center-text { max-width: 780px; margin: 0 auto; }
.center-text p { color: var(--fg-dim); font-size: 16px; line-height: 1.9; margin-bottom: 16px; text-align: center; }
.center-text .center-lead { color: var(--fg); font-size: 19px; }
.center-text strong, .center-text b { color: var(--fg); }
.center-duo {
    display: flex; gap: 24px; justify-content: center; margin-top: 44px; flex-wrap: wrap;
}
.center-duo img {
    width: min(340px, 44vw); aspect-ratio: 3 / 4; object-fit: cover;
    border: 1px solid var(--line);
}
.chip-cloud {
    list-style: none; display: flex; flex-wrap: wrap; gap: 10px;
    justify-content: center; max-width: 900px; margin: 0 auto 32px;
}
.chip-cloud li {
    border: 1px solid var(--line); border-radius: 999px;
    padding: 8px 20px; font-size: 14px; color: var(--fg-dim);
    transition: all .25s;
}
.chip-cloud li:hover { color: var(--fg); border-color: var(--fg-dim); }
.chip-sm li { padding: 6px 16px; font-size: 13px; }
.loop-line {
    display: flex; align-items: center; justify-content: center;
    gap: 14px; flex-wrap: wrap; margin: 36px 0;
}
.loop-node {
    border: 1px solid var(--fg-dim); border-radius: 999px;
    padding: 10px 26px; font-size: 15px; letter-spacing: 1px; background: var(--bg);
}
.about-roles { margin-top: 20px; }
.pain-center { text-align: left; }
.about-cta-center {
    grid-template-columns: 1fr auto; text-align: left;
    max-width: 860px; margin: 0 auto;
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
    .ins-grid { grid-template-columns: 1fr; }
    .ins-card { grid-template-columns: 160px 1fr; gap: 18px; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .rel-grid { grid-template-columns: 1fr; }
    .about-cta-center { grid-template-columns: 1fr; text-align: center; }
    .about-cta-center .wechat-card { margin: 0 auto; }
}
@media (max-width: 640px) {
    .ins-card { grid-template-columns: 1fr; }
    .ins-thumb img { aspect-ratio: 16 / 10; }
    .gallery-grid { grid-template-columns: 1fr; }
    .article { padding: 120px 20px 60px; }
    .center-duo img { width: 100%; }
}

/* ---------- SYT-X 风格排版升级 ---------- */
/* 小号大写标签 */
.eyebrow {
    font-size: 13px; letter-spacing: 4px; text-transform: uppercase;
    color: var(--fg-dim); margin-bottom: 18px;
}
.eyebrow::before { content: ""; display: inline-block; width: 28px; height: 1px; background: var(--fg-dim); vertical-align: middle; margin-right: 12px; }

/* 超大标题 + 斜体衬线强调词 */
.mega-title {
    font-size: clamp(38px, 6.5vw, 84px);
    font-weight: 800; line-height: 1.15; letter-spacing: 1px;
}
.serif-i {
    font-family: Georgia, "Times New Roman", "Songti SC", serif;
    font-style: italic; font-weight: 400; letter-spacing: 0;
}

/* 板块头 v2 */
.sec-head-v2 { margin-bottom: 56px; }
.sec-head-v2 .mega-title { margin-top: 4px; }
.sec-head-v2 .sec-desc {
    margin-top: 18px; color: var(--fg-dim); font-size: 16px; max-width: 640px;
}

/* Hero v2：宣言式大字 */
.hero-v2 { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; }
.hero-v2 .hero-video, .hero-v2 .hero-fallback { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-v2 .hero-overlay { position: absolute; inset: 0; background: linear-gradient(rgba(10,10,12,.35), rgba(10,10,12,.55) 80%); }
.hero-v2-content {
    position: relative; z-index: 2; max-width: var(--maxw);
    margin: 0 auto; padding: 140px 32px 120px; width: 100%;
}
.hero-v2-content h1 {
    font-size: clamp(44px, 9vw, 118px); font-weight: 900;
    line-height: 1.12; letter-spacing: 2px;
}
.hero-v2-sub {
    margin-top: 26px; font-size: clamp(15px, 2vw, 21px);
    color: var(--fg-dim); letter-spacing: 1px; max-width: 640px; line-height: 1.8;
}
.hero-v2-sub .serif-i { color: var(--fg); font-size: 1.1em; }
.hero-v2 .hero-scroll { animation: bounce 2s infinite; }

/* 跑马灯 */
.marquee {
    overflow: hidden; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
    padding: 22px 0; background: var(--bg);
}
.marquee-track {
    display: flex; width: max-content; white-space: nowrap;
    animation: marquee 36s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
    font-size: clamp(18px, 2.4vw, 28px); font-weight: 700; letter-spacing: 3px;
    color: var(--fg-dim); padding: 0 14px;
}
.marquee-track i { font-style: normal; color: rgba(255,255,255,.25); padding: 0 14px; font-size: .7em; vertical-align: middle; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* 编辑式编号列表 */
.edit-list { border-top: 1px solid var(--line); }
.edit-row {
    display: grid; grid-template-columns: 90px 1fr auto; gap: 32px;
    align-items: center; padding: 38px 8px;
    border-bottom: 1px solid var(--line);
    transition: background .3s, padding .3s;
}
.edit-row:hover { background: var(--bg-soft); padding-left: 24px; }
.edit-no {
    font-family: Georgia, "Times New Roman", serif; font-style: italic;
    font-size: 22px; color: var(--fg-dim);
}
.edit-row:hover .edit-no { color: var(--fg); }
.edit-main .edit-tag {
    display: block; font-size: 12px; letter-spacing: 3px; text-transform: uppercase;
    color: var(--fg-dim); margin-bottom: 8px;
}
.edit-main h3 { font-size: clamp(20px, 2.6vw, 30px); font-weight: 700; letter-spacing: 1px; }
.edit-main p { color: var(--fg-dim); font-size: 15px; margin-top: 10px; max-width: 720px; line-height: 1.8; }
.edit-link {
    font-size: 14px; letter-spacing: 2px; color: var(--fg-dim);
    border: 1px solid var(--line); border-radius: 999px;
    padding: 12px 28px; white-space: nowrap; transition: all .3s;
}
.edit-row:hover .edit-link { color: var(--fg); border-color: var(--fg); }

/* 数据条精修 */
.stats-band .stat-big { font-family: Georgia, "Times New Roman", serif; }

/* 尾部 CTA 大字 */
.cta-v2 { text-align: center; padding: 40px 0 20px; }
.cta-v2 .mega-title { margin: 14px 0 22px; }
.cta-v2 > p { color: var(--fg-dim); font-size: 17px; max-width: 560px; margin: 0 auto 34px; }

@media (max-width: 760px) {
    .edit-row { grid-template-columns: 1fr; gap: 14px; padding: 28px 4px; }
    .edit-row:hover { padding-left: 4px; }
    .edit-link { justify-self: start; }
}

/* ---------- 全局精致度微调 ---------- */
.logo { letter-spacing: 3px; }
.main-nav a { letter-spacing: 2px; }
.main-nav { gap: 40px; }
.site-footer { margin-top: 0; border-top: none; }
.page-hero .eyebrow { margin-bottom: 14px; }
.page-hero h1 { letter-spacing: 4px; }
@media (max-width: 640px) {
    .main-nav { gap: 0; }
}

/* ---------- 评审落地：CTA 按钮 / 缩略图 / hover 微交互 ---------- */
:root { --blue: #2374ff; }

.btn-blue, .btn-outline {
    display: inline-block; padding: 15px 42px; border-radius: 4px;
    font-size: 15px; font-weight: 700; letter-spacing: 2px;
    transition: transform .25s, box-shadow .25s, background .25s, color .25s, border-color .25s;
}
.btn-blue { background: var(--blue); color: #fff; }
.btn-blue:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(35,116,255,.4); }
.btn-outline { border: 1px solid rgba(255,255,255,.6); color: var(--fg); }
.btn-outline:hover { transform: translateY(-3px); border-color: #fff; box-shadow: 0 8px 24px rgba(255,255,255,.12); }

.hero-v2-actions { display: flex; gap: 18px; margin-top: 36px; flex-wrap: wrap; }

/* 重点业务行：加深背景 + 右侧缩略图 */
.edit-row.has-thumb { background: var(--bg-soft); }
.edit-row.has-thumb:hover { background: #17171d; }
.edit-thumb {
    width: 190px; height: 120px; overflow: hidden; border: 1px solid var(--line);
}
.edit-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s ease; }
.edit-row:hover .edit-thumb img { transform: scale(1.06); }
.edit-thumb-lg { width: 230px; height: 140px; }

/* 全局 hover 微交互：上浮 + 淡蓝光晕 */
.btn-solid, .edit-link, .ins-card, .adv-item, .edit-row, .bline-card, .service-item {
    transition: transform .3s, box-shadow .3s, border-color .3s, background .3s, color .25s, padding .3s;
}
.btn-solid:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(255,255,255,.15); }
.edit-link:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(35,116,255,.25); }
.ins-card:hover {
    transform: translateY(-4px);
    border-color: rgba(35,116,255,.55);
    box-shadow: 0 12px 32px rgba(35,116,255,.14);
}
.adv-item:hover {
    background: #18181f;
    border-color: rgba(35,116,255,.55);
    box-shadow: 0 10px 28px rgba(35,116,255,.14);
}

/* 洞察分类标签主色 */
.ins-tag { color: var(--blue); border-color: rgba(35,116,255,.4); }

/* 关于摘要：左图右文三段式 */
.about-split {
    display: grid; grid-template-columns: 5fr 7fr; gap: 56px; align-items: center;
}
.about-split-media { overflow: hidden; }
.about-split-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .5s ease; }
.about-split:hover .about-split-media img { transform: scale(1.03); }
.about-split-text p { color: var(--fg-dim); font-size: 15px; line-height: 1.9; margin-bottom: 14px; }
.about-split-text p:first-child { color: var(--fg); font-size: 17px; }
.about-split-text .btn-line { display: inline-block; margin-top: 8px; }

/* CTA：邮箱按钮 + 企业微信并排 */
.cta-duo {
    display: flex; gap: 40px; justify-content: center; align-items: center;
    flex-wrap: wrap; margin-top: 8px;
}
.cta-duo-actions { display: flex; flex-direction: column; gap: 16px; align-items: stretch; }
.cta-duo-actions .btn-blue, .cta-duo-actions .btn-outline { text-align: center; }

/* 页脚版权弱化 */
.footer-copy { font-size: 12px; opacity: .75; }

@media (max-width: 960px) {
    .about-split { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 760px) {
    .edit-thumb, .edit-thumb-lg { width: 100%; height: 160px; }
}

/* ---------- 视觉精修 pass（设计系统统一） ---------- */
/* 基础节奏：防横向滚动 */
html, body { overflow-x: hidden; }

/* 字体排版统一 */
body { letter-spacing: .2px; }
h1, h2, h3 { line-height: 1.3; }
.section .sec-desc, .center-text p, .article-body p { line-height: 1.9; }

/* 板块留白节奏：桌面 96~120px 呼吸感 */
@media (min-width: 961px) {
    .section { padding-top: 110px; padding-bottom: 110px; }
    .section-services { border-top: 1px solid var(--line); }
}

/* 导航：滚动毛玻璃 + 细边框 */
.site-header { border-bottom: 1px solid transparent; transition: background .35s, border-color .35s, backdrop-filter .35s; }
.site-header.scrolled {
    background: rgba(10, 10, 12, .82);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
}

/* 图片统一：圆角 + 暗色描边（懒加载已就位，首屏除外） */
.work-thumb, .ins-thumb, .edit-thumb, .biz-media, .who-media, .about-split-media, .center-duo img,
.bline-thumb, .case-player, .gallery-grid a, .footer-qr {
    border-radius: 6px;
}
.work-thumb img, .case-player video, .case-player img { border-radius: 6px; }
.edit-thumb, .gallery-grid a { border: 1px solid var(--line); }
.who-media img, .about-split-media img, .center-duo img, .biz-media img { border: 1px solid var(--line); }
.article-cover img { border-radius: 6px; border: 1px solid var(--line); }

/* 画廊/海报悬停统一 */
.gallery-grid a img { transition: transform .5s ease, opacity .3s; }

/* 文字选中：品牌蓝系 */
::selection { background: rgba(35, 116, 255, .38); color: #fff; }

/* 链接 hover 统一 */
a { transition: color .2s; }
.main-nav a.on { color: var(--fg); }

/* 按钮/链接 focus 可见态 */
:focus-visible { outline: 2px solid rgba(35, 116, 255, .8); outline-offset: 2px; border-radius: 2px; }

/* 表单精修 */
.contact-form input, .contact-form textarea {
    transition: border-color .25s, box-shadow .25s;
}
.contact-form input:focus, .contact-form textarea:focus {
    outline: none; border-color: rgba(35, 116, 255, .7);
    box-shadow: 0 0 0 3px rgba(35, 116, 255, .15);
}

/* 企业微信二维码：白色圆角底衬，暗色背景上更清晰 */
.wechat-qr { background: #fff; padding: 10px; border-radius: 10px; border: none; }
.wechat-qr img { object-fit: contain; border-radius: 4px; }
.wechat-empty { background: var(--bg); }
.footer-qr img { background: #fff; padding: 6px; border-radius: 8px; }

/* 滚动淡入统一时长缓动 */
.fade-in { transition: opacity .8s cubic-bezier(.22, .61, .36, 1), transform .8s cubic-bezier(.22, .61, .36, 1); }

/* 数字条数字字重精修 */
.stats-band .stat-big { font-variant-numeric: tabular-nums; }

/* 跑马灯与页脚衔接 */
.marquee + .site-footer { border-top: 1px solid var(--line); }

/* 文章页正文链接 */
.article-body a { color: var(--blue); border-bottom: 1px solid rgba(35,116,255,.4); }
.article-body a:hover { color: #6ea2ff; }

@media (max-width: 640px) {
    .section { padding-top: 72px; padding-bottom: 72px; }
}

/* ---------- 二期评审精修 ---------- */
/* Hero 文字区渐变黑蒙版，保证可读性 */
.hero-v2-content { position: relative; }
.hero-v2-content::before {
    content: ""; position: absolute; inset: -60px -80px; z-index: -1;
    background: radial-gradient(ellipse 75% 65% at 30% 45%, rgba(5,6,10,.62), rgba(5,6,10,.25) 55%, transparent 75%);
    pointer-events: none;
}
/* 价值定位行：主标题与定位语层次拉开 */
.hero-value {
    margin-top: 26px; font-size: clamp(18px, 2.6vw, 28px);
    font-weight: 600; letter-spacing: 2px; color: var(--fg);
}
.hero-v2-sub { margin-top: 12px; font-size: clamp(13px, 1.6vw, 17px); }
/* 信任标签行 */
.hero-trust {
    margin-top: 22px; font-size: clamp(12px, 1.3vw, 14px);
    color: var(--fg-dim); letter-spacing: 1px; max-width: 620px; line-height: 1.9;
    border-left: 2px solid rgba(35,116,255,.6); padding-left: 14px;
}

/* 业务板块打包提示 */
.biz-note {
    margin-top: 28px; text-align: center; color: var(--fg-dim);
    font-size: 14px; letter-spacing: 1px;
}

/* 板块末尾统一收口按钮 */
.section-more { text-align: center; margin-top: 44px; }

/* 数字条备注 */
.stats-note { color: var(--fg-dim); font-size: 13px; margin: -30px 0 40px; opacity: .8; }

/* WHY US 线性科技图标 */
.adv-svg { display: inline-block; width: 30px; height: 30px; color: var(--blue); margin-bottom: 14px; }
.adv-svg svg { width: 100%; height: 100%; }

/* 洞察分类标签放大 */
.ins-tag { font-size: 13px; padding: 4px 14px; }

/* CTA：企业微信视觉 C 位 */
.wechat-hero { display: flex; flex-direction: column; align-items: center; }
.cta-v2 .wechat-card { max-width: 300px; padding: 32px; }
.cta-v2 .wechat-qr { width: 210px; height: 210px; }
.wechat-hero-note { margin-top: 14px; font-size: 14px; color: var(--fg-dim); letter-spacing: 1px; }

/* 联系表单下拉框与提交按钮 */
.contact-form select {
    width: 100%; background: var(--bg); border: 1px solid var(--line);
    color: var(--fg); padding: 12px 14px; font-size: 15px; font-family: inherit;
    border-radius: 4px; transition: border-color .25s, box-shadow .25s;
}
.contact-form select:focus {
    outline: none; border-color: rgba(35,116,255,.7);
    box-shadow: 0 0 0 3px rgba(35,116,255,.15);
}
.btn-submit-wide { width: 100%; margin-top: 26px; }

@media (max-width: 640px) {
    .hero-value { letter-spacing: 1px; }
    .cta-v2 .wechat-qr { width: 190px; height: 190px; }
    .cta-duo { flex-direction: column-reverse; }
}

/* ---------- 业务线缩略图加大 + 3:2 裁切 + 悬停微光 ---------- */
.edit-thumb {
    width: 236px; height: 157px;   /* 3:2 */
    overflow: hidden; border: 1px solid var(--line); border-radius: 6px;
    transition: border-color .3s, box-shadow .3s;
    flex-shrink: 0;
}
.edit-thumb img {
    width: 100%; height: 100%; object-fit: cover; display: block;
    transition: transform .5s ease;
}
.edit-row:hover .edit-thumb {
    border-color: rgba(35, 116, 255, .6);
    box-shadow: 0 8px 26px rgba(35, 116, 255, .28);
}
.edit-row:hover .edit-thumb img { transform: scale(1.04); }
/* 行高相应拉开 */
.edit-row { padding-top: 44px; padding-bottom: 44px; }
.edit-row.has-thumb { align-items: center; }
@media (max-width: 760px) {
    .edit-thumb { width: 100%; height: auto; aspect-ratio: 3 / 2; }
    .edit-row { padding-top: 30px; padding-bottom: 30px; }
}