/* ============================================================
   长沙科技传媒技工学校 - 前台样式
   深蓝 #1B3A6B 主色 / 橙 #F0822A 点缀 / 浅灰 #F5F7FA
   响应式三端 / 系统字体栈 / 零外部依赖
   ============================================================ */
:root {
    --c-primary: #1B3A6B;
    --c-primary-dark: #142C52;
    --c-accent: #F0822A;
    --c-accent-dark: #D06F1F;
    --c-bg: #F5F7FA;
    --c-text: #2B3445;
    --c-text-2: #6B7688;
    --c-border: #E3E8F0;
    --c-white: #FFFFFF;
    --radius: 10px;
    --shadow: 0 4px 18px rgba(27, 58, 107, 0.08);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font);
    color: var(--c-text);
    background: var(--c-white);
    line-height: 1.7;
    font-size: 15px;
}
img { max-width: 100%; height: auto; border: 0; }
a { color: var(--c-primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--c-accent); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

/* ---------- 顶部信息条 ---------- */
.topbar { background: var(--c-primary-dark); color: rgba(255,255,255,.85); font-size: 13px; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; height: 36px; }
.topbar a { color: var(--c-accent); font-weight: 600; }
.topbar a:hover { color: #fff; }

/* ---------- 头部导航 ---------- */
.site-header { background: var(--c-white); box-shadow: 0 2px 12px rgba(27,58,107,.08); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; gap: 20px; height: 76px; }
.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo-text { display: flex; flex-direction: column; line-height: 1.3; }
.logo-text strong { font-size: 19px; color: var(--c-primary); letter-spacing: .5px; }
.logo-text small { font-size: 12px; color: var(--c-text-2); }
.main-nav { flex: 1; display: flex; justify-content: center; }
.nav-menu { display: flex; list-style: none; gap: 4px; }
.nav-menu > li { position: relative; }
.nav-menu > li > a { display: block; padding: 10px 16px; color: var(--c-text); font-weight: 500; border-radius: 6px; }
.nav-menu > li > a:hover, .nav-menu > li > a.active { color: var(--c-accent); }
.has-sub:hover .sub-menu { display: block; }
.sub-menu { display: none; position: absolute; top: 100%; left: 0; min-width: 150px; background: var(--c-white); border-radius: 8px; box-shadow: var(--shadow); list-style: none; padding: 8px 0; border: 1px solid var(--c-border); }
.sub-menu a { display: block; padding: 8px 18px; color: var(--c-text); font-size: 14px; }
.sub-menu a:hover { background: var(--c-bg); color: var(--c-accent); }
.header-phone { display: flex; align-items: center; gap: 8px; background: var(--c-accent); color: #fff; padding: 9px 18px; border-radius: 22px; font-weight: 600; flex-shrink: 0; }
.header-phone:hover { background: var(--c-accent-dark); color: #fff; }
.nav-toggle { display: none; }

/* ---------- Hero 轮播 ---------- */
.hero { position: relative; background: var(--c-primary-dark); }
.hero-slide { display: none; min-height: 420px; background-size: cover; background-position: center; position: relative; }
.hero-slide.hero-noimg { background: linear-gradient(120deg, #142c52 0%, #1B3A6B 55%, #2A5298 100%); }
.hero-slide.active { display: flex; align-items: center; }
.hero-slide::before { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(20,44,82,.78) 0%, rgba(20,44,82,.35) 60%, transparent 100%); }
.hero-content { position: relative; z-index: 1; color: #fff; padding-top: 60px; padding-bottom: 60px; }
.hero-content h1 { font-size: 40px; margin-bottom: 14px; text-shadow: 0 2px 10px rgba(0,0,0,.3); }
.hero-content p { font-size: 17px; margin-bottom: 26px; opacity: .92; }
.btn-hero { display: inline-block; background: var(--c-accent); color: #fff; padding: 12px 32px; border-radius: 26px; font-weight: 600; font-size: 16px; border: none; cursor: pointer; transition: background .2s, transform .2s; }
.btn-hero:hover { background: var(--c-accent-dark); color: #fff; transform: translateY(-1px); }
.hero-dots { position: absolute; bottom: 18px; left: 50%; transform: translateX(-50%); display: flex; gap: 8px; z-index: 2; }
.hero-dots button { width: 10px; height: 10px; border-radius: 50%; border: none; background: rgba(255,255,255,.45); cursor: pointer; padding: 0; }
.hero-dots button.active { background: var(--c-accent); }

/* ---------- 区块通用 ---------- */
.section { padding: 56px 0; }
.section-gray { background: var(--c-bg); }
.section-head { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 28px; border-bottom: 2px solid var(--c-border); padding-bottom: 12px; }
.section-head h2 { font-size: 26px; color: var(--c-primary); position: relative; padding-left: 14px; }
.section-head h2::before { content: ''; position: absolute; left: 0; top: 6px; bottom: 4px; width: 4px; background: var(--c-accent); border-radius: 2px; }
.section-sub { color: var(--c-text-2); font-size: 14px; }
.section-more { font-size: 14px; color: var(--c-text-2); }
.section-more:hover { color: var(--c-accent); }

/* ---------- 学校简介 ---------- */
.about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 36px; align-items: center; }
.about-text p { color: var(--c-text-2); margin-bottom: 20px; }
.btn-outline { display: inline-block; border: 1.5px solid var(--c-primary); color: var(--c-primary); padding: 9px 26px; border-radius: 22px; font-weight: 600; transition: all .2s; }
.btn-outline:hover { background: var(--c-primary); color: #fff; }
.about-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.fact-item { background: var(--c-bg); border-radius: var(--radius); padding: 22px 14px; text-align: center; border: 1px solid var(--c-border); }
.fact-item strong { display: block; font-size: 24px; color: var(--c-accent); margin-bottom: 4px; }
.fact-item span { font-size: 13px; color: var(--c-text-2); }

/* ---------- 专业卡片 ---------- */
.major-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.major-card { background: var(--c-white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column; transition: transform .25s, box-shadow .25s; }
.major-card:hover { transform: translateY(-4px); box-shadow: 0 10px 28px rgba(27,58,107,.14); }
.major-img { height: 180px; overflow: hidden; }
.major-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.major-card:hover .major-img img { transform: scale(1.05); }
.major-info { padding: 18px; flex: 1; display: flex; flex-direction: column; }
.major-info h3 { font-size: 18px; color: var(--c-primary); margin-bottom: 6px; }
.major-info p { font-size: 13px; color: var(--c-text-2); flex: 1; }
.major-sub { color: var(--c-accent) !important; font-weight: 600; margin-bottom: 4px; flex: 0 !important; }
.major-link { margin-top: 10px; font-size: 13px; color: var(--c-accent); font-weight: 600; }
.major-grid-page .major-card .major-info p { line-height: 1.6; }

/* ---------- 新闻卡片 ---------- */
.news-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 22px; }
.news-card { background: var(--c-white); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 18px; display: block; transition: box-shadow .2s, border-color .2s; }
.news-card:hover { box-shadow: var(--shadow); border-color: #CFDCEE; }
.news-card-main { grid-row: span 2; padding: 0; overflow: hidden; }
.news-cover { height: 220px; overflow: hidden; }
.news-cover img { width: 100%; height: 100%; object-fit: cover; }
.news-card-main .news-info { padding: 18px; }
.news-info time { font-size: 12px; color: var(--c-text-2); }
.news-info h3 { font-size: 16px; color: var(--c-text); margin-top: 6px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card:hover .news-info h3 { color: var(--c-accent); }
.news-info p { font-size: 13px; color: var(--c-text-2); margin-top: 8px; }

/* ---------- 校园环境 ---------- */
.scene-tabs { display: flex; gap: 8px; margin-bottom: 20px; flex-wrap: wrap; }
.scene-tab { border: 1px solid var(--c-border); background: var(--c-white); color: var(--c-text-2); padding: 7px 20px; border-radius: 20px; cursor: pointer; font-size: 14px; transition: all .2s; }
.scene-tab.active, .scene-tab:hover { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }
.scene-panel { display: none; }
.scene-panel.active { display: block; }
.scene-grid-front { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.scene-item { border-radius: var(--radius); overflow: hidden; position: relative; background: var(--c-white); box-shadow: var(--shadow); }
.scene-item img { width: 100%; height: 170px; object-fit: cover; display: block; transition: transform .4s; }
.scene-item:hover img { transform: scale(1.05); }
.scene-item figcaption { padding: 10px 12px; font-size: 13px; color: var(--c-text); text-align: center; }
.scene-section { margin-bottom: 40px; }
.scene-group-title { font-size: 20px; color: var(--c-primary); margin-bottom: 16px; padding-left: 12px; border-left: 4px solid var(--c-accent); }
.scene-grid-page .scene-item img { height: 200px; }
.scene-video { margin-bottom: 40px; }
.scene-video-player { width: 100%; max-height: 520px; border-radius: var(--radius); background: #000; }
.scene-video-embed { position: relative; width: 100%; padding-top: 56.25%; border-radius: var(--radius); overflow: hidden; background: #000; box-shadow: var(--shadow); }
.scene-video-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; }
.video-link-card { display: flex; align-items: center; gap: 14px; background: var(--c-primary); color: #fff; border-radius: var(--radius); padding: 22px 26px; font-size: 16px; }
.video-link-card:hover { background: var(--c-primary-dark); color: #fff; }
.video-play-icon { width: 46px; height: 46px; border-radius: 50%; background: var(--c-accent); display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }

/* ---------- 优秀学子 ---------- */
.student-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.student-card { background: var(--c-white); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 20px; text-align: center; transition: box-shadow .2s; }
.student-card:hover { box-shadow: var(--shadow); }
.student-photo { width: 96px; height: 96px; border-radius: 50%; overflow: hidden; margin: 0 auto 12px; border: 3px solid var(--c-bg); }
.student-photo img { width: 100%; height: 100%; object-fit: cover; }
.student-card h3 { font-size: 16px; color: var(--c-primary); margin-bottom: 6px; }
.student-tag { display: inline-block; font-size: 12px; color: var(--c-accent); background: #FFF4E8; border-radius: 12px; padding: 3px 12px; }

/* ---------- 资质荣誉 ---------- */
.qual-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.qual-card { background: var(--c-white); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 14px; text-align: center; display: flex; flex-direction: column; gap: 8px; align-items: center; }
.qual-card img { height: 80px; object-fit: contain; }
.qual-card span { font-size: 13px; color: var(--c-text); }

/* ---------- CTA 横幅 ---------- */
.cta-band { background: linear-gradient(120deg, var(--c-primary-dark), var(--c-primary)); color: #fff; padding: 44px 0; }
.cta-inner { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.cta-inner h2 { font-size: 26px; margin-bottom: 6px; }
.cta-inner p { opacity: .88; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-outline-light { display: inline-block; border: 1.5px solid rgba(255,255,255,.7); color: #fff; padding: 11px 30px; border-radius: 26px; font-weight: 600; }
.btn-outline-light:hover { background: rgba(255,255,255,.12); color: #fff; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--c-primary-dark); color: rgba(255,255,255,.78); margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1.2fr 1fr 1fr; gap: 32px; padding: 46px 16px 30px; }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-logo strong { font-size: 17px; color: #fff; }
.footer-desc { font-size: 13px; line-height: 1.8; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer-contact { list-style: none; }
.footer-contact li { display: flex; gap: 8px; align-items: flex-start; margin-bottom: 10px; font-size: 14px; }
.footer-contact svg { flex-shrink: 0; margin-top: 4px; color: var(--c-accent); }
.footer-contact a { color: var(--c-accent); font-weight: 600; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { color: rgba(255,255,255,.78); font-size: 14px; }
.footer-links a:hover { color: var(--c-accent); }
.footer-qr { display: flex; gap: 14px; margin-top: 12px; }
.qr-item { text-align: center; font-size: 12px; }
.qr-item img { width: 82px; height: 82px; border-radius: 6px; background: #fff; padding: 4px; }
.footer-friendlinks { padding: 12px 16px; border-top: 1px solid rgba(255,255,255,.12); font-size: 13px; display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: center; }
.footer-friendlinks .fl-label { color: rgba(255,255,255,.55); }
.footer-friendlinks a { color: rgba(255,255,255,.72); }
.footer-friendlinks a:hover { color: var(--c-accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding: 14px 0; font-size: 13px; }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.footer-bottom a { color: rgba(255,255,255,.72); }
.footer-bottom a:hover { color: var(--c-accent); }

/* ---------- 内页通用 ---------- */
.page-banner { background: linear-gradient(120deg, var(--c-primary-dark), var(--c-primary)); color: #fff; padding: 44px 0; }
.page-banner h1 { font-size: 28px; margin-bottom: 10px; }
.crumb { font-size: 13px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.crumb a { color: rgba(255,255,255,.85); }
.crumb a:hover { color: var(--c-accent); }
.crumb span { opacity: .5; }
.crumb em { font-style: normal; opacity: .95; }
.page-body { padding: 40px 16px 56px; }
.empty-box { text-align: center; color: var(--c-text-2); padding: 60px 0; }
.sub-cat-bar { display: flex; gap: 8px; margin-bottom: 24px; flex-wrap: wrap; }
.sub-cat-bar a { padding: 7px 18px; border-radius: 20px; border: 1px solid var(--c-border); color: var(--c-text-2); font-size: 14px; }
.sub-cat-bar a.active, .sub-cat-bar a:hover { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }

/* ---------- 文章列表 ---------- */
.article-list { display: flex; flex-direction: column; gap: 16px; }
.article-item { display: flex; gap: 18px; background: var(--c-white); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 16px; transition: box-shadow .2s; }
.article-item:hover { box-shadow: var(--shadow); }
.article-thumb { width: 220px; height: 140px; border-radius: 8px; overflow: hidden; flex-shrink: 0; }
.article-thumb img { width: 100%; height: 100%; object-fit: cover; }
.article-meta { flex: 1; display: flex; flex-direction: column; }
.article-meta h2 { font-size: 18px; color: var(--c-text); margin-bottom: 8px; }
.article-item:hover .article-meta h2 { color: var(--c-accent); }
.article-meta p { font-size: 13px; color: var(--c-text-2); flex: 1; }
.article-foot { display: flex; gap: 18px; font-size: 12px; color: var(--c-text-2); margin-top: 8px; }

/* ---------- 文章详情 ---------- */
.article-layout { display: grid; grid-template-columns: 1fr 300px; gap: 30px; align-items: start; }
.article-main { background: var(--c-white); min-width: 0; }
.article-title { font-size: 26px; color: var(--c-primary); line-height: 1.4; margin-bottom: 12px; }
.article-info { display: flex; gap: 18px; flex-wrap: wrap; font-size: 13px; color: var(--c-text-2); border-bottom: 1px solid var(--c-border); padding-bottom: 14px; margin-bottom: 20px; }
.rich-content { font-size: 15px; line-height: 1.9; word-break: break-word; }
.rich-content p { margin-bottom: 14px; }
.rich-content img { max-width: 100%; height: auto; border-radius: 6px; margin: 8px 0; }
.rich-content h1, .rich-content h2, .rich-content h3, .rich-content h4 { color: var(--c-primary); margin: 22px 0 12px; line-height: 1.4; }
.rich-content ul, .rich-content ol { margin: 0 0 14px 22px; }
.rich-content blockquote { border-left: 3px solid var(--c-accent); background: var(--c-bg); padding: 10px 16px; margin: 0 0 14px; color: var(--c-text-2); }
.rich-content table { width: 100%; border-collapse: collapse; margin-bottom: 14px; }
.rich-content td, .rich-content th { border: 1px solid var(--c-border); padding: 8px 12px; }
.article-tags { display: flex; gap: 8px; flex-wrap: wrap; margin: 20px 0; }
.article-tags .tag { font-size: 12px; background: var(--c-bg); color: var(--c-text-2); padding: 4px 12px; border-radius: 12px; }
.article-pn { display: flex; justify-content: space-between; gap: 14px; border-top: 1px solid var(--c-border); padding-top: 16px; margin-top: 24px; flex-wrap: wrap; }
.pn-item { font-size: 14px; }
.muted { color: var(--c-text-2); }

/* ---------- 侧栏 ---------- */
.article-side { display: flex; flex-direction: column; gap: 20px; position: sticky; top: 96px; }
.side-card { background: var(--c-white); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 20px; }
.side-card h3 { font-size: 16px; color: var(--c-primary); margin-bottom: 14px; padding-bottom: 10px; border-bottom: 2px solid var(--c-bg); position: relative; }
.side-card h3::after { content: ''; position: absolute; left: 0; bottom: -2px; width: 36px; height: 2px; background: var(--c-accent); }
.side-list { list-style: none; }
.side-list li { padding: 7px 0; border-bottom: 1px dashed var(--c-border); font-size: 14px; }
.side-list li:last-child { border-bottom: none; }
.side-cta { background: linear-gradient(150deg, var(--c-primary), var(--c-primary-dark)); color: #fff; }
.side-cta h3 { color: #fff; border-bottom-color: rgba(255,255,255,.15); }
.side-cta p { font-size: 13px; opacity: .85; margin-bottom: 12px; }
.side-phone { display: block; font-size: 22px; font-weight: 700; color: var(--c-accent); margin-bottom: 12px; }
.side-phone:hover { color: #fff; }
.btn-side { display: block; text-align: center; background: var(--c-accent); color: #fff; padding: 10px; border-radius: 8px; font-weight: 600; }
.btn-side:hover { background: var(--c-accent-dark); color: #fff; }

/* ---------- 专业详情 ---------- */
.major-hero { border-radius: var(--radius); overflow: hidden; margin-bottom: 20px; }
.major-subtitle-line { font-size: 17px; color: var(--c-accent); font-weight: 600; margin-bottom: 16px; }
.major-cta { display: flex; justify-content: space-between; align-items: center; gap: 20px; background: var(--c-bg); border-radius: var(--radius); padding: 22px 26px; margin-top: 28px; flex-wrap: wrap; }
.major-cta strong { font-size: 18px; color: var(--c-primary); }
.major-cta p { font-size: 13px; color: var(--c-text-2); margin-top: 4px; }

/* ---------- 单页 ---------- */
.single-page { background: var(--c-white); max-width: 900px; }
.contact-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 30px; }

/* ---------- 联系页 ---------- */
.contact-layout { display: grid; grid-template-columns: 380px 1fr; gap: 30px; align-items: start; }
.contact-info-col { display: flex; flex-direction: column; gap: 18px; }
.contact-card { background: var(--c-white); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 22px; }
.contact-card h3 { font-size: 15px; color: var(--c-primary); margin-bottom: 10px; }
.contact-big { font-size: 26px; font-weight: 700; color: var(--c-accent); display: block; }
.contact-qr { width: 130px; border-radius: 8px; }
.form-title { font-size: 22px; color: var(--c-primary); margin-bottom: 6px; }
.apply-form-wrap { max-width: 640px; margin: 36px auto 8px; }
.message-form { background: var(--c-white); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 26px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.req { color: #DC2626; }
.form-input { width: 100%; border: 1px solid var(--c-border); border-radius: 8px; padding: 10px 14px; font-size: 14px; font-family: var(--font); transition: border-color .2s; background: #fff; }
.form-input:focus { outline: none; border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(27,58,107,.08); }
textarea.form-input { resize: vertical; }
.form-submit { width: 100%; }
.form-submit:disabled { opacity: .6; cursor: not-allowed; }

/* ---------- 404 ---------- */
.notfound-box strong { display: block; font-size: 88px; color: var(--c-primary); line-height: 1; margin-bottom: 14px; }
.notfound-box p { margin-bottom: 22px; }
.notfound-actions { display: flex; gap: 14px; justify-content: center; }

/* ---------- 第三方客服浮动入口 ---------- */
.cs-third-float { position: fixed; right: 22px; bottom: 96px; z-index: 900; display: flex; flex-direction: column; align-items: center; gap: 4px; background: var(--c-primary); color: #fff; border-radius: 26px; padding: 12px 16px; font-size: 12px; box-shadow: 0 6px 20px rgba(27,58,107,.3); }
.cs-third-float:hover { background: var(--c-accent); color: #fff; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .major-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
    .news-card-main { grid-row: auto; grid-column: span 2; }
    .scene-grid-front, .student-grid { grid-template-columns: repeat(3, 1fr); }
    .qual-grid { grid-template-columns: repeat(4, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .article-layout { grid-template-columns: 1fr; }
    .article-side { position: static; }
    .contact-layout { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .topbar-left { display: none; }
    .topbar-inner { justify-content: center; }
    .header-inner { height: 64px; gap: 10px; }
    .logo-text small { display: none; }
    .logo-text strong { font-size: 16px; }
    .nav-toggle { display: flex; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
    .nav-toggle span { width: 24px; height: 2px; background: var(--c-primary); border-radius: 2px; transition: all .25s; }
    .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
    .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .main-nav { position: relative; flex: 0; margin-left: auto; }
    .nav-menu { display: none; position: absolute; right: 0; top: 52px; width: 220px; background: #fff; border-radius: 10px; box-shadow: var(--shadow); flex-direction: column; padding: 10px; border: 1px solid var(--c-border); max-height: 70vh; overflow-y: auto; }
    .nav-menu.open { display: flex; }
    .sub-menu { position: static; display: none; box-shadow: none; border: none; padding-left: 14px; }
    .has-sub.open .sub-menu { display: block; }
    .header-phone span { display: none; }
    .header-phone { padding: 9px 12px; border-radius: 50%; }
    .hero-slide { min-height: 300px; }
    .hero-content h1 { font-size: 26px; }
    .hero-content p { font-size: 14px; }
    .section { padding: 36px 0; }
    .section-head h2 { font-size: 21px; }
    .about-grid { grid-template-columns: 1fr; }
    .major-grid, .news-grid { grid-template-columns: 1fr; }
    .news-card-main { grid-column: auto; }
    .scene-grid-front, .student-grid { grid-template-columns: repeat(2, 1fr); }
    .qual-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1fr; gap: 22px; padding: 32px 16px 22px; }
    .cta-inner { flex-direction: column; text-align: center; }
    .cta-actions { justify-content: center; }
    .article-item { flex-direction: column; }
    .article-thumb { width: 100%; height: 170px; }
    .article-title { font-size: 21px; }
    .contact-cards { grid-template-columns: 1fr; }
    .major-cta { flex-direction: column; align-items: flex-start; }
    .footer-bottom .container { justify-content: center; text-align: center; }
}

/* ============================================================
 * 图片灯箱（校园环境 / 文章正文 点击放大）
 * ============================================================ */
.lb-mask {
    position: fixed; inset: 0; z-index: 9999;
    background: rgba(0,0,0,0.88);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: opacity 0.25s;
}
.lb-mask.show { opacity: 1; }
.lb-img {
    max-width: 92vw; max-height: 84vh;
    border-radius: 8px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.5);
    user-select: none; -webkit-user-drag: none;
}
.lb-close, .lb-prev, .lb-next {
    position: absolute; z-index: 2;
    width: 44px; height: 44px; border: none; border-radius: 50%;
    background: rgba(255,255,255,0.14); color: #fff;
    font-size: 22px; line-height: 1; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background 0.2s;
}
.lb-close:hover, .lb-prev:hover, .lb-next:hover { background: rgba(255,255,255,0.3); }
.lb-close { top: 20px; right: 22px; }
.lb-prev { left: 18px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 18px; top: 50%; transform: translateY(-50%); }
.lb-info {
    position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%);
    color: rgba(255,255,255,0.85); font-size: 14px; text-align: center;
    background: rgba(0,0,0,0.35); padding: 6px 16px; border-radius: 16px;
    max-width: 80vw;
}
@media (max-width: 768px) {
    .lb-prev { left: 8px; } .lb-next { right: 8px; }
    .lb-close, .lb-prev, .lb-next { width: 38px; height: 38px; font-size: 18px; }
}

/* ============================================================
 * 分页导航（pagination() 函数输出 .pagination>ul>li）
 * ============================================================ */
.pagination { margin: 34px 0 10px; }
.pagination ul { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; padding: 0; margin: 0; }
.pagination li { display: inline-flex; }
.pagination li a {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 38px; height: 38px; padding: 0 12px;
    border: 1px solid #E3E8F0; border-radius: 8px;
    background: #fff; color: #344054; font-size: 14px;
    text-decoration: none; transition: all .18s;
}
.pagination li a:hover { border-color: var(--c-primary); color: var(--c-primary); background: #F4F8FF; }
.pagination li.active a { background: var(--c-primary); border-color: var(--c-primary); color: #fff; font-weight: 600; }
.pagination li.dots { align-items: center; color: #98A2B3; padding: 0 2px; user-select: none; }

/* 底部公众号/视频号二维码：图文垂直居中，修复文字被挤到图片右侧的错位 */
.qr-item { display: flex; flex-direction: column; align-items: center; gap: 8px; text-align: center; font-size: 12px; }
.qr-item img { display: block; width: 82px; height: 82px; border-radius: 6px; background: #fff; padding: 4px; }

/* ============================================================
 * 前端视觉升级层 v1.3（2026-07-31）
 * 纯CSS3动效体系：磨砂玻璃导航 / Hero入场 / 扫光按钮 / 卡片悬浮
 * 电影胶卷模块 / CTA网格光纹；含 prefers-reduced-motion 与移动端降级
 * 仅视觉增强，不改变布局结构与SEO标签
 * ============================================================ */

/* ---------- 1. 导航栏滚动磨砂玻璃（JS 滚动时加 .is-scrolled） ---------- */
.site-header { transition: background .3s ease, box-shadow .3s ease; }
.site-header.is-scrolled {
    background: rgba(255, 255, 255, .82);
    -webkit-backdrop-filter: saturate(1.6) blur(14px);
    backdrop-filter: saturate(1.6) blur(14px);
    box-shadow: 0 6px 24px rgba(15, 42, 80, .12);
}
/* 不支持 backdrop-filter 的浏览器回退为近实色，保证可读性 */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .site-header.is-scrolled { background: rgba(255, 255, 255, .96); }
}

/* ---------- 2. Hero 内容入场动效 + 按钮扫光 ---------- */
.hero-slide.active .hero-content h1 { animation: heroRise .7s ease both; }
.hero-slide.active .hero-content p { animation: heroRise .7s ease .12s both; }
.hero-slide.active .hero-content .btn-hero { animation: heroRise .7s ease .24s both; }
@keyframes heroRise {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}
.btn-hero { position: relative; overflow: hidden; }
.btn-hero::after {
    content: ''; position: absolute; top: 0; left: -70%;
    width: 45%; height: 100%;
    background: linear-gradient(105deg, transparent, rgba(255, 255, 255, .38), transparent);
    transform: skewX(-20deg); pointer-events: none;
}
.btn-hero:hover::after { animation: sweepLight .7s ease; }
@keyframes sweepLight { from { left: -70%; } to { left: 130%; } }

/* ---------- 3. 卡片悬浮升级（在既有规则上补充上浮位移） ---------- */
.news-card, .student-card, .qual-card, .fact-item, .article-item, .side-card, .contact-card {
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.news-card:hover, .student-card:hover, .qual-card:hover, .fact-item:hover, .article-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(27, 58, 107, .13);
}
.student-photo { transition: transform .3s ease, border-color .3s ease; }
.student-card:hover .student-photo { transform: scale(1.05); border-color: rgba(240, 130, 42, .35); }
.qual-card img { transition: transform .3s ease; }
.qual-card:hover img { transform: scale(1.06); }

/* ---------- 4. 区块标题装饰条渐变 ---------- */
.section-head h2::before { background: linear-gradient(180deg, var(--c-accent), #F5A85C); }

/* ---------- 5. CTA 横幅网格光纹背景（纯CSS，替代粒子插件） ---------- */
.cta-band { position: relative; overflow: hidden; }
.cta-band::before {
    content: ''; position: absolute; inset: 0; pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
    background-size: 34px 34px;
    animation: gridDrift 26s linear infinite;
}
.cta-inner { position: relative; z-index: 1; }
@keyframes gridDrift { from { background-position: 0 0, 0 0; } to { background-position: 34px 34px, 34px 34px; } }

/* ============================================================
 * 6. 电影胶卷模块（招生专业视觉引子 · 方案B）
 * 深海蓝基底 + 胶片齿孔 + 两端环绕遮罩 + 无缝横向滚动
 * ============================================================ */
.filmstrip {
    position: relative;
    /* 与前后 section 自带 padding(56px) 叠加后，实现 上40px / 下30px 的净间距 */
    margin: -16px 0 -26px;
    height: 240px;
    overflow: hidden;
    /* 深海蓝深色基底 */
    background: linear-gradient(160deg, #0D2138 0%, #15395C 52%, #0D2138 100%);
    /* 电光青极细描边 + 轻微内阴影，呈现轻薄悬浮质感 */
    box-shadow:
        inset 0 1px 0 rgba(110, 196, 255, .20),
        inset 0 -1px 0 rgba(110, 196, 255, .12),
        inset 0 16px 30px -20px rgba(0, 0, 0, .6),
        inset 0 -16px 30px -24px rgba(0, 0, 0, .5);
}
/* 胶片齿孔：上下边缘浅灰蓝孔带（不滚动，固定在"放映机"上） */
.filmstrip::before, .filmstrip::after {
    content: ''; position: absolute; left: 0; right: 0; height: 22px; z-index: 3; pointer-events: none;
    background:
        repeating-linear-gradient(90deg,
            transparent 0, transparent 9px,
            rgba(172, 200, 229, .5) 9px, rgba(172, 200, 229, .5) 21px,
            transparent 21px, transparent 32px) center / 32px 11px repeat-x,
        linear-gradient(180deg, rgba(7, 19, 33, .92), rgba(12, 30, 50, .92));
}
.filmstrip::before { top: 0; }
.filmstrip::after { bottom: 0; background: repeating-linear-gradient(90deg, transparent 0, transparent 9px, rgba(172, 200, 229, .5) 9px, rgba(172, 200, 229, .5) 21px, transparent 21px, transparent 32px) center / 32px 11px repeat-x, linear-gradient(0deg, rgba(7, 19, 33, .92), rgba(12, 30, 50, .92)); }

/* 装饰性文字（非SEO标签） */
.filmstrip-title {
    position: absolute; top: 34px; left: 36px; z-index: 4; pointer-events: none;
    color: rgba(233, 243, 255, .92); font-size: 15px; font-weight: 300;
    letter-spacing: 3px; text-shadow: 0 1px 6px rgba(0, 0, 0, .55);
}
.filmstrip-tag {
    position: absolute; bottom: 34px; right: 36px; z-index: 4; pointer-events: none;
    color: rgba(143, 197, 246, .78); font-size: 12px; letter-spacing: 1.5px;
    text-shadow: 0 1px 4px rgba(0, 0, 0, .5);
}

/* 视口：两端 100px 渐变遮罩，营造"胶卷从页面两侧环绕穿出"的空间感 */
.filmstrip-viewport { position: absolute; inset: 0; perspective: 1000px; }
.filmstrip-viewport::before, .filmstrip-viewport::after {
    content: ''; position: absolute; top: 0; bottom: 0; width: 100px; z-index: 2; pointer-events: none;
}
.filmstrip-viewport::before { left: 0; background: linear-gradient(90deg, #0B1C30 0%, rgba(11, 28, 48, 0) 100%); }
.filmstrip-viewport::after { right: 0; background: linear-gradient(270deg, #0B1C30 0%, rgba(11, 28, 48, 0) 100%); }

/* 透视倾斜层：极轻微 rotateX 提供纵深，滚动动画只作用在内层 track 的 translateX 上 */
.filmstrip-tilt { height: 100%; display: flex; align-items: center; transform: rotateX(4deg) scale(1.02); transform-origin: center; }

/* 滚动轨道：双份帧组，translateX(-50%) 无缝循环，35s 匀速，仅 transform 不触发重排 */
.filmstrip-track {
    display: flex; width: max-content; will-change: transform;
    animation: filmScroll 35s linear infinite;
}
.filmstrip:hover .filmstrip-track { animation-play-state: paused; }
@keyframes filmScroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

.filmstrip-group { display: flex; gap: 18px; padding-right: 18px; }

/* 宽幅帧格：冷调科技感统一调色，悬停放大+淡蓝光效 */
.film-frame {
    position: relative; display: block; flex-shrink: 0;
    width: 300px; height: 172px; border-radius: 6px; overflow: hidden;
    border: 1px solid rgba(110, 196, 255, .26);
    box-shadow: 0 6px 18px rgba(2, 10, 20, .5);
    transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.film-frame img {
    width: 100%; height: 100%; object-fit: cover; display: block;
    filter: saturate(.82) hue-rotate(-6deg) brightness(.94) contrast(1.04);
    transition: transform .35s ease, filter .35s ease;
}
.film-frame:hover {
    transform: scale(1.03);
    border-color: rgba(110, 196, 255, .78);
    box-shadow: 0 0 0 3px rgba(90, 178, 255, .22), 0 10px 26px rgba(2, 10, 20, .55);
}
.film-frame:hover img { filter: saturate(.95) hue-rotate(-3deg) brightness(1) contrast(1.04); }
.film-frame-name {
    position: absolute; left: 0; right: 0; bottom: 0;
    padding: 20px 12px 9px; font-size: 13px; color: #EAF4FF; letter-spacing: .5px;
    background: linear-gradient(180deg, transparent, rgba(6, 17, 30, .85));
    text-shadow: 0 1px 3px rgba(0, 0, 0, .6);
}

/* ---------- 平板端降级（≤1024px）：降透视、缩齿孔、减速 ---------- */
@media (max-width: 1024px) {
    .filmstrip { height: 180px; }
    .filmstrip::before, .filmstrip::after { height: 16px; background-size: 26px 9px, auto; }
    .filmstrip-tilt { transform: none; }
    .filmstrip-track { animation-duration: 45s; }
    .film-frame { width: 236px; height: 128px; }
    .filmstrip-viewport::before, .filmstrip-viewport::after { width: 64px; }
    .filmstrip-title { top: 24px; left: 24px; font-size: 13px; letter-spacing: 2px; }
    .filmstrip-tag { bottom: 24px; right: 24px; font-size: 11px; }
}

/* ---------- 移动端降级（≤768px）：关透视与自动滚动，静态胶片可手滑，去高强度光效 ---------- */
@media (max-width: 768px) {
    .filmstrip { height: 140px; margin: 0; box-shadow: inset 0 1px 0 rgba(110, 196, 255, .14); }
    .filmstrip::before, .filmstrip::after { height: 12px; background-size: 22px 7px, auto; }
    .filmstrip-tilt { transform: none; }
    .filmstrip-track { animation: none; padding: 0 14px; }
    .filmstrip-viewport { overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; perspective: none; }
    .filmstrip-viewport::-webkit-scrollbar { display: none; }
    .filmstrip-viewport::before, .filmstrip-viewport::after { width: 36px; }
    .film-frame { width: 188px; height: 96px; }
    .film-frame:hover { transform: none; box-shadow: 0 6px 18px rgba(2, 10, 20, .5); }
    .film-frame-name { font-size: 11px; padding: 14px 9px 6px; }
    .filmstrip-title { top: 18px; left: 18px; font-size: 12px; }
    .filmstrip-tag { display: none; }
    /* 移动端同步关闭高强度动效，保证流畅 */
    .cta-band::before { animation: none; }
    .hero-slide.active .hero-content h1,
    .hero-slide.active .hero-content p,
    .hero-slide.active .hero-content .btn-hero { animation: none; }
    .btn-hero::after { display: none; }
    .news-card:hover, .student-card:hover, .qual-card:hover, .fact-item:hover, .article-item:hover { transform: none; }
}

/* ---------- 无障碍：系统开启"减弱动态效果"时全局降级 ---------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }
    html { scroll-behavior: auto; }
    /* 胶卷转为静态展示，保留手动拖动查看能力 */
    .filmstrip-track { animation: none !important; }
    .filmstrip-viewport { overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
    .filmstrip-viewport::-webkit-scrollbar { display: none; }
    .filmstrip-tilt { transform: none; }
    .cta-band::before { animation: none; }
}

/* ============================================================
 * v1.3.1 前台导航挤压修复：LOGO英文名收窄+导航禁止竖排换行
 * 根因：新增英文校名后LOGO区过宽挤压导航，菜单文字被迫竖排
 * ============================================================ */
.logo-text small { font-size: 10.5px; letter-spacing: 0; white-space: nowrap; }
.nav-menu { flex-wrap: nowrap; }
.nav-menu > li > a { white-space: nowrap; padding: 10px 12px; }
.header-inner { gap: 14px; }
.header-phone { padding: 9px 14px; white-space: nowrap; }
@media (max-width: 1280px) {
    .nav-menu > li > a { padding: 10px 9px; font-size: 15px; }
    .logo-text small { font-size: 10px; }
}
@media (max-width: 1100px) {
    .logo-text small { display: none; } /* 窄屏隐藏英文校名，优先保住导航一行排开 */
    .logo-text strong { font-size: 17px; }
}

/* --- v1.3.1 footer 品牌区中英文校名（与页头LOGO区一致） --- */
.footer-logo-text { display: flex; flex-direction: column; line-height: 1.35; }
.footer-logo-text small { font-size: 10.5px; opacity: .72; letter-spacing: 0; }