/* ============================================
   糖心vlog 官网原创样式表
   配色：珊瑚粉 #FF6B6B / 品红 #C850C0 / 深紫 #4158D0
   字体：系统字体栈
   ============================================ */
:root {
  --coral: #FF6B6B;
  --magenta: #C850C0;
  --indigo: #4158D0;
  --dark-bg: #0f0e17;
  --card-bg: #1a1928;
  --card-hover: #252438;
  --text-main: #f0e6ff;
  --text-muted: #a89ec4;
  --gold: #FFD369;
  --success: #2ecc71;
  --radius: 12px;
  --shadow: 0 8px 32px rgba(0,0,0,0.35);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  background: var(--dark-bg);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--coral); text-decoration: none; transition: color .25s; }
a:hover { color: var(--gold); }
img { max-width: 100%; height: auto; display: block; }
.wrap { max-width: 1240px; margin: 0 auto; padding: 0 20px; }

/* ---- 顶部导航 ---- */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 999;
  background: rgba(15,14,23,0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,107,107,0.15);
  transition: background .3s;
}
.topbar .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.topbar-logo { display: flex; align-items: center; gap: 10px; }
.topbar-logo img { width: 38px; height: 38px; border-radius: 8px; }
.topbar-logo span { font-size: 1.25rem; font-weight: 700; background: linear-gradient(135deg, var(--coral), var(--magenta)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.nav-links { display: flex; gap: 28px; list-style: none; }
.nav-links a { color: var(--text-main); font-size: .95rem; position: relative; padding: 4px 0; }
.nav-links a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--coral); transition: width .3s; }
.nav-links a:hover::after, .nav-links a.on::after { width: 100%; }
.nav-links a:hover { color: var(--coral); }
.mob-toggle { display: none; background: none; border: none; color: var(--text-main); font-size: 1.5rem; cursor: pointer; }

/* ---- 搜索框 ---- */
.search-bar {
  background: var(--card-bg);
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,107,107,0.08);
  margin-top: 64px;
}
.search-bar .wrap { display: flex; justify-content: center; }
.search-box {
  display: flex; width: 100%; max-width: 580px;
  border-radius: 50px; overflow: hidden;
  border: 2px solid rgba(200,80,192,0.3);
  transition: border-color .3s;
}
.search-box:focus-within { border-color: var(--coral); }
.search-box input {
  flex: 1; padding: 10px 22px; background: transparent;
  border: none; color: var(--text-main); font-size: .95rem; outline: none;
}
.search-box input::placeholder { color: var(--text-muted); }
.search-box button {
  padding: 10px 28px; background: linear-gradient(135deg, var(--coral), var(--magenta));
  border: none; color: #fff; font-size: .95rem; cursor: pointer;
  transition: opacity .3s;
}
.search-box button:hover { opacity: .85; }

/* ---- Hero 横幅 ---- */
.hero {
  position: relative;
  min-height: 520px;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  filter: brightness(0.45);
  z-index: 0;
}
.hero-content { position: relative; z-index: 2; padding: 60px 20px; }
.hero h1 { font-size: 2.8rem; font-weight: 800; margin-bottom: 16px; text-shadow: 0 4px 20px rgba(0,0,0,0.5); }
.hero h1 em { font-style: normal; background: linear-gradient(135deg, var(--coral), var(--gold)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { font-size: 1.15rem; color: var(--text-muted); max-width: 640px; margin: 0 auto 28px; }
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 32px; border-radius: 50px; font-size: 1rem; font-weight: 600;
  transition: transform .25s, box-shadow .25s; cursor: pointer; border: none;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: linear-gradient(135deg, var(--coral), var(--magenta)); color: #fff; box-shadow: 0 6px 24px rgba(255,107,107,0.35); }
.btn-outline { background: transparent; color: var(--text-main); border: 2px solid rgba(255,255,255,0.25); }
.btn-outline:hover { border-color: var(--coral); color: var(--coral); }

/* ---- 通用板块 ---- */
.section { padding: 72px 0; }
.section-alt { background: var(--card-bg); }
.sec-head { text-align: center; margin-bottom: 48px; }
.sec-head h2 { font-size: 2rem; font-weight: 700; margin-bottom: 10px; }
.sec-head h2 em { font-style: normal; color: var(--coral); }
.sec-head p { color: var(--text-muted); max-width: 600px; margin: 0 auto; }
.breadcrumb { padding: 12px 0; font-size: .85rem; color: var(--text-muted); }
.breadcrumb a { color: var(--coral); }

/* ---- 视频卡片网格 ---- */
.vid-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.vid-card {
  background: var(--card-bg); border-radius: var(--radius); overflow: hidden;
  transition: transform .3s, box-shadow .3s; cursor: pointer;
  border: 1px solid rgba(255,107,107,0.06);
}
.vid-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.vid-thumb {
  position: relative; padding-top: 56.25%; overflow: hidden;
}
.vid-thumb img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  transition: transform .4s;
}
.vid-card:hover .vid-thumb img { transform: scale(1.06); }
.vid-play {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.35); opacity: 0; transition: opacity .3s; z-index: 2;
}
.vid-card:hover .vid-play { opacity: 1; }
.vid-play i {
  width: 56px; height: 56px; border-radius: 50%;
  background: linear-gradient(135deg, var(--coral), var(--magenta));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; color: #fff;
  box-shadow: 0 4px 20px rgba(255,107,107,0.5);
}
.vid-dur {
  position: absolute; bottom: 8px; right: 8px;
  background: rgba(0,0,0,0.75); color: #fff; font-size: .75rem;
  padding: 2px 8px; border-radius: 4px; z-index: 3;
}
.vid-info { padding: 14px 16px; }
.vid-info h3 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.vid-meta { display: flex; gap: 14px; font-size: .8rem; color: var(--text-muted); flex-wrap: wrap; }
.vid-tags { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }
.vid-tags span {
  font-size: .7rem; padding: 2px 10px; border-radius: 20px;
  background: rgba(200,80,192,0.12); color: var(--magenta);
}

/* ---- 专家卡片 ---- */
.expert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.expert-card {
  background: var(--card-bg); border-radius: var(--radius); padding: 28px 20px;
  text-align: center; transition: transform .3s; border: 1px solid rgba(255,107,107,0.06);
}
.expert-card:hover { transform: translateY(-4px); }
.expert-card img { width: 96px; height: 96px; border-radius: 50%; margin: 0 auto 14px; object-fit: cover; border: 3px solid var(--coral); }
.expert-card h4 { font-size: 1.05rem; margin-bottom: 4px; }
.expert-card .role { color: var(--magenta); font-size: .85rem; margin-bottom: 10px; }
.expert-card p { font-size: .85rem; color: var(--text-muted); margin-bottom: 14px; }
.expert-card .btn { font-size: .8rem; padding: 8px 20px; }

/* ---- FAQ ---- */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid rgba(255,107,107,0.1); }
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 0; cursor: pointer; font-weight: 600; font-size: 1rem;
}
.faq-q::after { content: '+'; font-size: 1.4rem; color: var(--coral); transition: transform .3s; }
.faq-item.open .faq-q::after { content: '-'; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-a p { padding: 0 0 18px; color: var(--text-muted); font-size: .92rem; line-height: 1.7; }

/* ---- 用户评价 ---- */
.review-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.review-card {
  background: var(--card-bg); border-radius: var(--radius); padding: 24px;
  border-left: 3px solid var(--coral);
}
.review-card .stars { color: var(--gold); font-size: .9rem; margin-bottom: 10px; }
.review-card blockquote { font-size: .92rem; color: var(--text-muted); margin-bottom: 12px; font-style: italic; }
.review-card .reviewer { font-size: .85rem; font-weight: 600; }

/* ---- 品牌墙 ---- */
.brand-wall { display: flex; gap: 36px; justify-content: center; flex-wrap: wrap; align-items: center; opacity: .6; }
.brand-wall span { font-size: 1.1rem; font-weight: 700; color: var(--text-muted); letter-spacing: 2px; }

/* ---- HowTo ---- */
.howto-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.howto-step {
  background: var(--card-bg); border-radius: var(--radius); padding: 28px 20px;
  text-align: center; position: relative; counter-increment: step;
}
.howto-step::before {
  content: counter(step); display: flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 50%;
  background: linear-gradient(135deg, var(--coral), var(--magenta));
  color: #fff; font-weight: 700; font-size: 1.1rem; margin: 0 auto 14px;
}
.howto-step h4 { margin-bottom: 8px; font-size: 1rem; }
.howto-step p { font-size: .85rem; color: var(--text-muted); }

/* ---- 联系我们 ---- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
.contact-info { background: var(--card-bg); border-radius: var(--radius); padding: 32px; }
.contact-info h3 { font-size: 1.2rem; margin-bottom: 18px; color: var(--coral); }
.contact-info p { margin-bottom: 10px; font-size: .92rem; color: var(--text-muted); }
.contact-qr { display: flex; gap: 24px; justify-content: center; }
.contact-qr figure { text-align: center; }
.contact-qr img { width: 140px; height: 140px; border-radius: 8px; }
.contact-qr figcaption { font-size: .8rem; color: var(--text-muted); margin-top: 6px; }

/* ---- 社交分享 ---- */
.share-row { display: flex; gap: 14px; justify-content: center; margin-top: 24px; }
.share-row a {
  width: 44px; height: 44px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: var(--card-bg); color: var(--text-main); font-size: 1.1rem;
  transition: background .3s, color .3s;
}
.share-row a:hover { background: var(--coral); color: #fff; }

/* ---- 页脚 ---- */
.site-footer {
  background: #0a0918; padding: 56px 0 24px;
  border-top: 1px solid rgba(255,107,107,0.1);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 36px; }
.footer-grid h4 { font-size: 1rem; margin-bottom: 14px; color: var(--coral); }
.footer-grid p, .footer-grid li { font-size: .85rem; color: var(--text-muted); line-height: 1.8; }
.footer-grid ul { list-style: none; }
.footer-grid a { color: var(--text-muted); }
.footer-grid a:hover { color: var(--coral); }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.footer-logo img { width: 36px; height: 36px; border-radius: 8px; }
.footer-logo span { font-size: 1.1rem; font-weight: 700; color: var(--coral); }
.footer-bottom { text-align: center; padding-top: 24px; border-top: 1px solid rgba(255,107,107,0.08); font-size: .8rem; color: var(--text-muted); }

/* ---- 内页通用 ---- */
.page-hero {
  padding: 100px 0 48px;
  background: linear-gradient(135deg, rgba(65,88,208,0.2), rgba(200,80,192,0.15));
  text-align: center;
}
.page-hero h1 { font-size: 2.2rem; margin-bottom: 10px; }
.page-hero p { color: var(--text-muted); }
.page-content { padding: 48px 0; }
.page-content p { margin-bottom: 16px; font-size: .95rem; color: var(--text-muted); line-height: 1.8; }
.page-content h2 { font-size: 1.5rem; margin: 32px 0 16px; color: var(--coral); }
.page-content h3 { font-size: 1.2rem; margin: 24px 0 12px; }

/* ---- AI赋能 ---- */
.ai-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.ai-card {
  background: var(--card-bg); border-radius: var(--radius); padding: 28px;
  border: 1px solid rgba(65,88,208,0.15); transition: border-color .3s;
}
.ai-card:hover { border-color: var(--indigo); }
.ai-card .icon { font-size: 2rem; margin-bottom: 12px; }
.ai-card h4 { margin-bottom: 8px; }
.ai-card p { font-size: .88rem; color: var(--text-muted); }

/* ---- 社区功能 ---- */
.comm-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.comm-card {
  background: linear-gradient(135deg, rgba(255,107,107,0.06), rgba(200,80,192,0.06));
  border-radius: var(--radius); padding: 24px; text-align: center;
}
.comm-card .icon { font-size: 2.2rem; margin-bottom: 10px; }
.comm-card h4 { margin-bottom: 6px; font-size: 1rem; }
.comm-card p { font-size: .85rem; color: var(--text-muted); }

/* ---- 响应式 ---- */
@media(max-width:1024px) {
  .vid-grid { grid-template-columns: repeat(2, 1fr); }
  .expert-grid { grid-template-columns: repeat(2, 1fr); }
  .howto-steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-features { grid-template-columns: repeat(2, 1fr); }
}
@media(max-width:768px) {
  .nav-links { display: none; position: fixed; top: 64px; left: 0; right: 0; background: var(--dark-bg); flex-direction: column; padding: 20px; gap: 16px; border-bottom: 1px solid rgba(255,107,107,0.1); }
  .nav-links.open { display: flex; }
  .mob-toggle { display: block; }
  .hero h1 { font-size: 1.8rem; }
  .hero { min-height: 380px; }
  .vid-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .howto-steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .ai-features { grid-template-columns: 1fr; }
  .comm-features { grid-template-columns: 1fr; }
  .sec-head h2 { font-size: 1.5rem; }
}
@media(max-width:480px) {
  .hero h1 { font-size: 1.4rem; }
  .btn { padding: 10px 24px; font-size: .9rem; }
  .search-box { max-width: 100%; }
}

/* ---- 懒加载 ---- */
img.lazy { opacity: 0; transition: opacity .5s; }
img.lazy.loaded { opacity: 1; }

/* 行业资讯模块 */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.news-card{background:rgba(255,255,255,.04);border:1px solid rgba(255,107,129,.12);border-radius:12px;padding:24px;transition:border-color .3s,transform .3s;}
.news-card:hover{border-color:rgba(255,107,129,.4);transform:translateY(-3px);}
.news-card h4{font-size:1rem;color:#fff;margin-bottom:10px;line-height:1.5;}
.news-card p{font-size:.88rem;color:#a89ec4;line-height:1.7;margin-bottom:10px;}
.news-date{font-size:.8rem;color:#ff6b81;font-weight:500;}

/* 创作者故事模块 */
.story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.story-card{background:rgba(255,255,255,.04);border:1px solid rgba(255,107,129,.12);border-radius:12px;padding:24px;transition:border-color .3s,transform .3s;}
.story-card:hover{border-color:rgba(255,107,129,.4);transform:translateY(-3px);}
.story-card h4{font-size:.95rem;color:#ff6b81;margin-bottom:12px;line-height:1.5;}
.story-card p{font-size:.88rem;color:#a89ec4;line-height:1.7;}

/* 排行榜模块 */
.ranking-list{max-width:800px;margin:0 auto;}
.rank-item{display:flex;align-items:center;gap:16px;padding:14px 20px;border-bottom:1px solid rgba(255,255,255,.06);transition:background .3s;}
.rank-item:hover{background:rgba(255,107,129,.06);}
.rank-num{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:6px;font-size:.85rem;font-weight:700;background:rgba(255,255,255,.06);color:#a89ec4;flex-shrink:0;}
.rank-num.top{background:linear-gradient(135deg,#ff6b81,#ff9a76);color:#fff;}
.rank-title{flex:1;font-size:.92rem;color:#e0d8f0;line-height:1.4;}
.rank-play{font-size:.82rem;color:#ff6b81;white-space:nowrap;font-weight:500;}

@media(max-width:768px){
  .news-grid{grid-template-columns:1fr;}
  .story-grid{grid-template-columns:1fr;}
  .rank-item{flex-wrap:wrap;gap:8px;}
  .rank-play{width:100%;text-align:right;}
}