/* ========================================
   HUANGSHIPIN22.COM.CN — 黄色视频设计系统
   “黄流涌动，视界全新”
   风格：极简白 + 霓虹黄光晕 + 杂志网格
   ======================================== */

/* 基础重置 */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
body { font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif; overflow-x:hidden; background:#fcf9f0; color:#2a1e0e; }

/* 核心布局 */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; position:relative; }
.section:nth-child(even) { background:#fcf5e6; }

/* 导航 */
.site-header { position:fixed; top:0; left:0; width:100%; z-index:1000; background:rgba(252,249,240,0.92); backdrop-filter:blur(14px); border-bottom:1px solid rgba(255,200,50,0.25); }
.header-inner { display:flex; align-items:center; justify-content:space-between; height:68px; max-width:1200px; margin:0 auto; padding:0 24px; }
.logo { display:flex; align-items:center; gap:8px; font-weight:800; font-size:1.3rem; text-decoration:none; color:#1a1206; letter-spacing:-0.5px; }
.logo-icon { width:38px; height:38px; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:1.1rem; background:linear-gradient(135deg,#ffd966,#f5b342); color:#1a1206; font-weight:700; box-shadow:0 2px 12px rgba(255,200,50,0.4); }
.main-nav { display:flex; align-items:center; gap:28px; list-style:none; }
.main-nav a { text-decoration:none; font-size:0.9rem; font-weight:500; color:#4a3e2a; transition:0.2s; letter-spacing:0.3px; }
.main-nav a:hover { color:#d4a017; }
.nav-cta { padding:8px 22px; border-radius:40px; color:#1a1206!important; font-weight:700; background:linear-gradient(135deg,#ffd966,#f5b342); box-shadow:0 2px 10px rgba(255,200,50,0.3); }
.menu-toggle { display:none; background:none; border:none; font-size:1.4rem; cursor:pointer; color:#1a1206; }

/* 首页Hero */
.hero { min-height:75vh; display:flex; align-items:center; position:relative; overflow:hidden; background:linear-gradient(160deg,#fcf9f0 0%,#fdf1d6 40%,#fcefc8 100%); }
.hero::after { content:''; position:absolute; top:-20%; right:-10%; width:600px; height:600px; background:radial-gradient(circle,rgba(255,215,0,0.12) 0%,transparent 70%); border-radius:50%; pointer-events:none; }
.hero-content { max-width:720px; position:relative; z-index:2; }
.hero-eyebrow { display:inline-block; font-size:0.8rem; font-weight:700; padding:5px 16px; border-radius:40px; margin-bottom:16px; background:rgba(255,200,50,0.2); color:#b8860b; letter-spacing:2px; text-transform:uppercase; }
.hero h1 { font-size:3.2rem; line-height:1.15; margin-bottom:20px; font-weight:900; color:#1a1206; letter-spacing:-1px; }
.hero h1::after { content:'✦'; display:inline-block; margin-left:12px; font-size:2rem; color:#f5b342; opacity:0.6; }
.hero p { font-size:1.15rem; opacity:0.7; max-width:560px; margin-bottom:32px; color:#3d3220; font-weight:400; }
.hero-buttons { display:flex; gap:14px; }
.hero-image { border-radius:16px; overflow:hidden; box-shadow:0 8px 40px rgba(255,200,50,0.15); }
.hero-image img { width:100%; height:auto; display:block; }

/* 按钮 */
.btn { display:inline-flex; align-items:center; gap:8px; padding:12px 30px; border-radius:50px; font-weight:700; cursor:pointer; border:none; text-decoration:none; transition:0.3s; font-size:0.95rem; }
.btn-primary { color:#1a1206; background:linear-gradient(135deg,#ffd966,#f5b342); box-shadow:0 4px 16px rgba(255,200,50,0.3); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(255,200,50,0.4); }
.btn-outline { background:transparent; border:1.5px solid #d4a017; color:#1a1206; }
.btn-outline:hover { background:rgba(212,160,23,0.08); }

/* 标签/标题 */
.section-label { display:inline-block; font-size:0.75rem; font-weight:700; letter-spacing:3px; margin-bottom:12px; color:#b8860b; text-transform:uppercase; }
.section-title { font-size:2.2rem; margin-bottom:14px; font-weight:900; color:#1a1206; letter-spacing:-0.5px; }
.section-desc { max-width:600px; opacity:0.7; margin-bottom:40px; color:#3d3220; font-size:1.05rem; }

/* 卡片网格 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:28px; }
.category-card { border-radius:16px; padding:32px 28px; border:1px solid rgba(212,160,23,0.15); background:rgba(255,255,255,0.5); backdrop-filter:blur(4px); transition:0.3s; }
.category-card:hover { transform:translateY(-4px); box-shadow:0 8px 32px rgba(255,200,50,0.12); border-color:rgba(212,160,23,0.3); }
.card-icon { width:52px; height:52px; border-radius:14px; display:flex; align-items:center; justify-content:center; margin-bottom:16px; font-size:1.5rem; background:linear-gradient(135deg,#fff3d6,#ffe0a0); color:#b8860b; }
.card-link { font-weight:700; font-size:0.85rem; text-decoration:none; color:#d4a017; display:inline-flex; align-items:center; gap:6px; }
.card-link::after { content:'→'; transition:0.2s; }
.card-link:hover::after { transform:translateX(4px); }

/* 特性块 */
.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; }
.feature-image { border-radius:16px; overflow:hidden; box-shadow:0 8px 32px rgba(255,200,50,0.08); }
.feature-image img { width:100%; height:auto; display:block; }
.feature-text { }
.feature-list { list-style:none; }
.feature-list li { padding:8px 0; display:flex; align-items:center; gap:10px; font-weight:500; color:#2a1e0e; }
.feature-list li::before { content:'✦'; font-weight:700; color:#f5b342; font-size:1.1rem; }

/* 数据条 */
.stats-bar { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center; }
.stat-item { padding:28px 16px; border-radius:16px; border:1px solid rgba(212,160,23,0.12); background:rgba(255,255,255,0.4); backdrop-filter:blur(4px); }
.stat-number { font-size:2.6rem; font-weight:900; color:#1a1206; letter-spacing:-1px; }
.stat-number::after { content:'+'; color:#f5b342; font-size:1.8rem; margin-left:2px; }
.stat-label { font-size:0.9rem; opacity:0.6; margin-top:6px; color:#3d3220; }

/* 内容墙 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:24px; }
.content-wall-item { border-radius:16px; overflow:hidden; border:1px solid rgba(212,160,23,0.12); transition:0.3s; background:rgba(255,255,255,0.3); backdrop-filter:blur(4px); }
.content-wall-item:hover { transform:translateY(-4px); box-shadow:0 8px 32px rgba(255,200,50,0.1); }
.content-wall-item img { width:100%; height:200px; object-fit:cover; display:block; }
.content-wall-body { padding:20px; }
.content-wall-body h3 { font-size:1.1rem; font-weight:700; color:#1a1206; margin-bottom:6px; }
.content-wall-body p { font-size:0.9rem; opacity:0.7; color:#3d3220; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { border:1px solid rgba(212,160,23,0.15); border-radius:14px; margin-bottom:10px; overflow:hidden; cursor:pointer; background:rgba(255,255,255,0.3); backdrop-filter:blur(4px); transition:0.2s; }
.faq-item:hover { border-color:rgba(212,160,23,0.3); }
.faq-item .faq-question { padding:18px 24px; font-weight:700; display:flex; justify-content:space-between; color:#1a1206; font-size:1rem; }
.faq-item .faq-question::after { content:'+'; font-size:1.3rem; color:#d4a017; transition:0.2s; }
.faq-item.open .faq-question::after { content:'−'; }
.faq-item .faq-answer { padding:0 24px 18px; display:none; opacity:0.75; color:#3d3220; line-height:1.6; }
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 */
.cta-banner { padding:64px 24px; text-align:center; border-radius:20px; color:#1a1206; background:linear-gradient(135deg,#ffd966,#f5b342); box-shadow:0 8px 40px rgba(255,200,50,0.25); }
.cta-banner h2 { color:#1a1206; font-size:2rem; font-weight:900; }
.cta-banner p { color:#3d3220; opacity:0.8; margin-bottom:24px; }
.cta-banner .btn-primary { background:#1a1206; color:#fcf9f0; box-shadow:0 4px 16px rgba(0,0,0,0.15); }
.cta-banner .btn-primary:hover { background:#2a1e0e; }

/* 页脚 */
.site-footer { padding:56px 0 28px; background:#fcf5e6; border-top:1px solid rgba(212,160,23,0.12); }
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; }
.footer-brand { }
.footer-brand .logo { font-size:1.2rem; margin-bottom:12px; }
.footer-brand p { font-size:0.9rem; opacity:0.7; color:#3d3220; max-width:260px; }
.footer-col h4 { font-weight:700; color:#1a1206; margin-bottom:16px; font-size:0.95rem; }
.footer-col ul { list-style:none; }
.footer-col ul li { margin-bottom:8px; }
.footer-col ul li a { text-decoration:none; color:#3d3220; font-size:0.9rem; opacity:0.8; transition:0.2s; }
.footer-col ul li a:hover { color:#d4a017; opacity:1; }
.footer-bottom { border-top:1px solid rgba(212,160,23,0.15); margin-top:40px; padding-top:20px; text-align:center; font-size:0.85rem; color:#3d3220; opacity:0.7; }

/* 工具类 */
.text-accent { color:#d4a017; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; color:#3d3220; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* 额外细节：黄光晕装饰 */
.section::before { content:''; position:absolute; width:400px; height:400px; background:radial-gradient(circle,rgba(255,215,0,0.06) 0%,transparent 70%); border-radius:50%; pointer-events:none; top:-10%; left:-10%; z-index:0; }
.section:nth-child(even)::before { left:auto; right:-10%; top:auto; bottom:-10%; }

/* ⚠️ 响应式 */
@media (max-width: 768px) {
  .feature-block { grid-template-columns:1fr; gap:40px; }
  .stats-bar { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .main-nav { display:none; }
  .menu-toggle { display:flex; align-items:center; justify-content:center; width:40px; height:40px; }
  .main-nav.open { display:flex; flex-direction:column; position:absolute; top:68px; left:0; width:100%; background:#fcf9f0; padding:24px; border-bottom:1px solid rgba(212,160,23,0.15); gap:16px; }
  .hero h1 { font-size:2.4rem; }
  .section-title { font-size:1.8rem; }
}
@media (max-width: 480px) {
  .cards-grid,.content-wall,.stats-bar { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; }
  .hero-buttons { flex-direction:column; }
  .hero h1 { font-size:2rem; }
  .stat-number { font-size:2rem; }
}