/*
设计提醒：青春电影胶片主义；品牌词“糖心影像社”需要稳定出现在标题、导航、栏目、面包屑与信任区。
本文件负责全站外部CSS，强调奶油白、银盐灰、晚霞橘、深墨蓝的校园青春影视感；兼顾百度落地页体验、移动端可读性与视频卡片悬停交互。
*/
:root {
  --cream: #fffaf1;
  --paper: #f4efe6;
  --ink: #1f2f46;
  --ink-soft: #3f536d;
  --orange: #cf8a52;
  --orange-deep: #ad6233;
  --gold: #e6c89b;
  --line: rgba(31, 47, 70, 0.12);
  --shadow: 0 18px 40px rgba(31, 47, 70, 0.12);
  --radius: 24px;
  --radius-sm: 16px;
  --max: 1220px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(230, 200, 155, 0.16), transparent 36%),
    linear-gradient(180deg, #fffdf8 0%, #fffaf1 18%, #f9f2e8 100%);
  line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.skip-link {
  position: absolute; left: -9999px; top: 12px; z-index: 100;
  background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 999px;
}
.skip-link:focus { left: 12px; }
.site-header {
  position: sticky; top: 0; z-index: 40; backdrop-filter: blur(16px);
  background: rgba(255, 250, 241, 0.88); border-bottom: 1px solid var(--line);
}
.topbar, .nav-row { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.topbar { padding: 12px 0 8px; font-size: 13px; color: var(--ink-soft); }
.nav-row { padding: 14px 0 18px; }
.brand {
  display: inline-flex; align-items: center; gap: 14px;
}
.brand-mark {
  width: 58px; height: 58px; border-radius: 50%; overflow: hidden; flex: 0 0 auto;
  box-shadow: 0 10px 28px rgba(31,47,70,.18); border: 1px solid rgba(31,47,70,.08);
}
.brand-copy strong { display: block; font-size: 24px; line-height: 1.1; }
.brand-copy span { font-size: 13px; color: var(--ink-soft); }
.main-nav { display: flex; flex-wrap: wrap; gap: 8px 10px; justify-content: flex-end; }
.main-nav a {
  padding: 10px 14px; border-radius: 999px; font-size: 14px; font-weight: 600;
  border: 1px solid transparent; transition: .22s ease;
}
.main-nav a:hover, .main-nav a:focus { background: rgba(207,138,82,.12); border-color: rgba(207,138,82,.2); }
.search-strip { padding-bottom: 18px; }
.search-box {
  display: grid; grid-template-columns: 1fr auto; gap: 10px; padding: 10px; border-radius: 999px;
  background: rgba(255,255,255,.9); box-shadow: var(--shadow); border: 1px solid rgba(31,47,70,.08);
}
.search-box input {
  border: 0; outline: 0; background: transparent; padding: 10px 16px; font-size: 15px; color: var(--ink);
}
.search-box button {
  border: 0; border-radius: 999px; background: linear-gradient(135deg, var(--orange), var(--orange-deep));
  color: #fff; padding: 0 22px; font-size: 15px; font-weight: 700;
}
.breadcrumb {
  font-size: 13px; color: var(--ink-soft); padding: 18px 0 4px;
}
.hero {
  padding: 28px 0 24px;
}
.hero-panel {
  position: relative; overflow: hidden; border-radius: 32px; min-height: 640px; box-shadow: var(--shadow);
  background: #e8ddd2;
}
.hero-media {
  position: absolute; inset: 0;
}
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(16,24,38,.75) 0%, rgba(16,24,38,.52) 34%, rgba(16,24,38,.18) 64%, rgba(16,24,38,.06) 100%);
}
.hero-content {
  position: relative; z-index: 2; width: min(620px, 100%); padding: 72px 54px;
  color: #fff;
}
.kicker {
  display: inline-flex; gap: 8px; align-items: center; margin-bottom: 18px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22); padding: 8px 14px; border-radius: 999px; font-size: 13px;
}
.hero h1 {
  margin: 0 0 18px; font-size: clamp(38px, 7vw, 66px); line-height: 1.06; letter-spacing: .5px;
}
.hero p {
  margin: 0 0 24px; font-size: 17px; color: rgba(255,255,255,.92);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px;
  border-radius: 999px; font-weight: 700; transition: .22s ease;
}
.button-primary { background: linear-gradient(135deg, var(--orange), var(--orange-deep)); color: #fff; }
.button-secondary { background: rgba(255,255,255,.14); color: #fff; border: 1px solid rgba(255,255,255,.22); }
.section { padding: 34px 0; }
.section-head { display: flex; justify-content: space-between; gap: 16px; align-items: end; margin-bottom: 18px; }
.section-head h2, .section-head h3 { margin: 0; font-size: clamp(26px, 3vw, 36px); line-height: 1.2; }
.section-head p { margin: 8px 0 0; max-width: 760px; color: var(--ink-soft); }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.panel {
  background: rgba(255,255,255,.88); border: 1px solid rgba(31,47,70,.08); border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.video-card {
  overflow: hidden; position: relative;
}
.video-thumb {
  position: relative; aspect-ratio: 16 / 10; overflow: hidden;
}
.video-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .28s ease; }
.video-card:hover .video-thumb img { transform: scale(1.04); }
.play-badge {
  position: absolute; inset: auto auto 18px 18px; width: 66px; height: 66px; border-radius: 50%;
  display: grid; place-items: center; background: rgba(16,24,38,.68); border: 1px solid rgba(255,255,255,.18);
  color: #fff; font-size: 28px; opacity: 0; transform: translateY(8px); transition: .24s ease;
}
.video-card:hover .play-badge, .video-card:focus-within .play-badge { opacity: 1; transform: translateY(0); }
.video-body { padding: 18px 18px 20px; }
.tag {
  display: inline-flex; padding: 6px 11px; border-radius: 999px; background: rgba(207,138,82,.14); color: var(--orange-deep); font-size: 12px; font-weight: 700;
}
.video-body h3 { margin: 12px 0 10px; font-size: 21px; line-height: 1.35; }
.video-body p { margin: 0; color: var(--ink-soft); }
.dual {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 20px;
}
.feature-media img, .wide-scene img {
  width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius);
}
.info-stack { display: grid; gap: 16px; }
.info-item { padding: 22px; }
.info-item h3 { margin: 0 0 10px; font-size: 21px; }
.info-item p { margin: 0; color: var(--ink-soft); }
.chip-list { display: flex; flex-wrap: wrap; gap: 10px; }
.chip-list span {
  padding: 10px 14px; border-radius: 999px; background: rgba(31,47,70,.06); font-weight: 600; color: var(--ink);
}
.timeline {
  display: grid; gap: 14px;
}
.timeline article { padding: 18px 20px; }
.timeline strong { display: block; margin-bottom: 6px; font-size: 18px; }
.expert-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.expert-card { display: grid; grid-template-columns: 180px 1fr; gap: 18px; padding: 18px; align-items: center; }
.expert-photo {
  border-radius: 24px; overflow: hidden; background: linear-gradient(180deg, #f6eee2, #f3e1cb);
}
.expert-photo img { width: 100%; height: 100%; object-fit: contain; }
.expert-card h3 { margin: 0; font-size: 26px; }
.expert-card p { margin: 8px 0 0; color: var(--ink-soft); }
.quote-wall { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.quote-wall .panel { padding: 18px; }
.quote-wall strong { display: block; font-size: 15px; margin-bottom: 8px; }
.faq-list { display: grid; gap: 12px; }
.faq-item { padding: 18px 20px; }
.faq-item h3 { margin: 0 0 8px; font-size: 20px; }
.contact-box { padding: 26px; }
.contact-box dl { margin: 0; display: grid; grid-template-columns: 110px 1fr; gap: 10px 16px; }
.contact-box dt { color: var(--ink-soft); }
.contact-box dd { margin: 0; font-weight: 600; }
.site-footer {
  margin-top: 34px; padding: 26px 0 50px; border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(244,239,230,.35), rgba(244,239,230,.82));
}
.footer-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; align-items: start; }
.footer-brand { display: flex; gap: 16px; }
.footer-brand img { width: 74px; height: 74px; border-radius: 50%; }
.footer-note { margin-top: 16px; font-size: 13px; color: var(--ink-soft); }
.stats {
  display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px;
}
.stats .panel { padding: 16px; text-align: center; }
.stats strong { display: block; font-size: 28px; }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}
@media (max-width: 1080px) {
  .card-grid, .quote-wall { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dual, .footer-grid, .expert-grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .container { width: min(var(--max), calc(100% - 20px)); }
  .nav-row, .topbar, .section-head { display: block; }
  .main-nav { margin-top: 12px; justify-content: flex-start; }
  .hero-panel { min-height: 560px; }
  .hero-content { padding: 42px 24px; }
  .search-box { grid-template-columns: 1fr; border-radius: 24px; }
  .card-grid, .quote-wall { grid-template-columns: 1fr; }
  .expert-card { grid-template-columns: 1fr; }
  .expert-photo { max-width: 260px; }
  .contact-box dl { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
}