/* 探花 - 主样式文件 | yc312249.cn */
/* ===== CSS Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;background:#0d0f1a;color:#e0e0e0;line-height:1.7;overflow-x:hidden}
a{color:#c9a84c;text-decoration:none;transition:color .3s}
a:hover{color:#f0c96e}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button{cursor:pointer;border:none;outline:none}
input,textarea{outline:none;border:none}

/* ===== CSS Variables ===== */
:root{
  --gold:#c9a84c;
  --gold-light:#f0c96e;
  --gold-dark:#a07830;
  --navy:#0d0f1a;
  --navy-mid:#161929;
  --navy-light:#1e2235;
  --navy-card:#242840;
  --text-main:#e0e0e0;
  --text-muted:#8a8fa8;
  --text-white:#ffffff;
  --accent-red:#e84040;
  --accent-purple:#7c3aed;
  --border-color:#2e3250;
  --shadow-gold:0 4px 24px rgba(201,168,76,.18);
  --radius:12px;
  --radius-sm:8px;
  --radius-lg:20px;
  --transition:.3s ease;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:#161929}
::-webkit-scrollbar-thumb{background:#c9a84c;border-radius:3px}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(13,15,26,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color);padding:0}
.header-inner{max-width:1280px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:68px}
.site-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.site-logo img{height:44px;width:auto;object-fit:contain}
.site-logo .logo-text{font-size:1.5rem;font-weight:700;background:linear-gradient(135deg,#c9a84c,#f0c96e);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:2px}
.site-logo .logo-sub{font-size:.7rem;color:var(--text-muted);letter-spacing:1px;display:block;margin-top:-4px}

/* ===== Navigation ===== */
.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{color:var(--text-main);font-size:.92rem;padding:8px 14px;border-radius:var(--radius-sm);transition:all var(--transition);white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:var(--gold);background:rgba(201,168,76,.1)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:transparent;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--gold);border-radius:2px;transition:all var(--transition)}

/* ===== Search Bar ===== */
.search-bar{background:var(--navy-mid);border-bottom:1px solid var(--border-color);padding:10px 0}
.search-inner{max-width:1280px;margin:0 auto;padding:0 20px;display:flex;justify-content:center}
.search-form{display:flex;width:100%;max-width:600px;background:var(--navy-card);border:1px solid var(--border-color);border-radius:30px;overflow:hidden;transition:border-color var(--transition)}
.search-form:focus-within{border-color:var(--gold)}
.search-form input{flex:1;background:transparent;color:var(--text-main);padding:10px 20px;font-size:.9rem}
.search-form input::placeholder{color:var(--text-muted)}
.search-form button{background:linear-gradient(135deg,var(--gold),var(--gold-light));color:#0d0f1a;padding:10px 22px;font-size:.9rem;font-weight:600;border-radius:0 30px 30px 0;transition:opacity var(--transition)}
.search-form button:hover{opacity:.85}

/* ===== Breadcrumb ===== */
.breadcrumb{background:var(--navy-mid);padding:10px 0;border-bottom:1px solid var(--border-color)}
.breadcrumb-inner{max-width:1280px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--text-muted)}
.breadcrumb-inner a{color:var(--text-muted)}
.breadcrumb-inner a:hover{color:var(--gold)}
.breadcrumb-inner span.sep{color:var(--border-color)}
.breadcrumb-inner span.current{color:var(--gold)}

/* ===== Hero Banner ===== */
.hero-section{position:relative;overflow:hidden;min-height:520px;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.45)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(13,15,26,.9) 0%,rgba(13,15,26,.5) 60%,rgba(13,15,26,.2) 100%)}
.hero-content{position:relative;z-index:2;max-width:1280px;margin:0 auto;padding:60px 20px}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(201,168,76,.15);border:1px solid rgba(201,168,76,.4);color:var(--gold);padding:5px 14px;border-radius:20px;font-size:.8rem;font-weight:600;margin-bottom:18px;letter-spacing:1px}
.hero-content h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;line-height:1.2;color:var(--text-white);margin-bottom:16px}
.hero-content h1 span{background:linear-gradient(135deg,var(--gold),var(--gold-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:1.05rem;color:rgba(255,255,255,.75);max-width:580px;margin-bottom:30px;line-height:1.8}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{background:linear-gradient(135deg,var(--gold),var(--gold-light));color:#0d0f1a;padding:12px 28px;border-radius:30px;font-weight:700;font-size:.95rem;transition:all var(--transition);box-shadow:0 4px 16px rgba(201,168,76,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(201,168,76,.5);color:#0d0f1a}
.btn-outline{background:transparent;color:var(--text-white);padding:12px 28px;border-radius:30px;font-weight:600;font-size:.95rem;border:2px solid rgba(255,255,255,.4);transition:all var(--transition)}
.btn-outline:hover{border-color:var(--gold);color:var(--gold);background:rgba(201,168,76,.08)}
.hero-stats{display:flex;gap:30px;margin-top:36px;flex-wrap:wrap}
.hero-stat{text-align:center}
.hero-stat .num{font-size:1.8rem;font-weight:800;color:var(--gold);line-height:1}
.hero-stat .label{font-size:.78rem;color:var(--text-muted);margin-top:4px}

/* ===== Section Base ===== */
.section{padding:64px 0}
.section-alt{background:var(--navy-mid)}
.container{max-width:1280px;margin:0 auto;padding:0 20px}
.section-header{text-align:center;margin-bottom:44px}
.section-tag{display:inline-block;background:rgba(201,168,76,.12);color:var(--gold);padding:4px 14px;border-radius:20px;font-size:.78rem;font-weight:600;letter-spacing:1px;margin-bottom:12px;border:1px solid rgba(201,168,76,.25)}
.section-title{font-size:clamp(1.6rem,3.5vw,2.4rem);font-weight:800;color:var(--text-white);margin-bottom:12px;line-height:1.3}
.section-title span{color:var(--gold)}
.section-desc{color:var(--text-muted);font-size:1rem;max-width:560px;margin:0 auto;line-height:1.8}

/* ===== Video Cards ===== */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.video-card{background:var(--navy-card);border-radius:var(--radius);overflow:hidden;transition:all var(--transition);border:1px solid var(--border-color);cursor:pointer}
.video-card:hover{transform:translateY(-6px);border-color:rgba(201,168,76,.4);box-shadow:var(--shadow-gold)}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#111}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.06)}
.play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.3);opacity:0;transition:opacity var(--transition)}
.video-card:hover .play-btn{opacity:1}
.play-icon{width:52px;height:52px;background:rgba(201,168,76,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(4px)}
.play-icon svg{width:22px;height:22px;fill:#0d0f1a;margin-left:3px}
.video-badge{position:absolute;top:10px;left:10px;background:var(--accent-red);color:#fff;font-size:.7rem;font-weight:700;padding:3px 8px;border-radius:4px}
.video-badge.hot{background:var(--accent-red)}
.video-badge.new{background:#059669}
.video-badge.ai{background:var(--accent-purple)}
.video-info{padding:14px}
.video-title{font-size:.92rem;font-weight:600;color:var(--text-white);margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;align-items:center;gap:12px;font-size:.78rem;color:var(--text-muted)}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-meta svg{width:13px;height:13px;fill:currentColor}
.video-category{font-size:.72rem;background:rgba(201,168,76,.12);color:var(--gold);padding:2px 8px;border-radius:4px;margin-bottom:8px;display:inline-block}

/* ===== Feature Cards ===== */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px}
.feature-card{background:var(--navy-card);border-radius:var(--radius);padding:28px 22px;border:1px solid var(--border-color);transition:all var(--transition);text-align:center}
.feature-card:hover{border-color:rgba(201,168,76,.4);transform:translateY(-4px);box-shadow:var(--shadow-gold)}
.feature-icon{width:60px;height:60px;background:linear-gradient(135deg,rgba(201,168,76,.15),rgba(201,168,76,.05));border-radius:16px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;border:1px solid rgba(201,168,76,.2)}
.feature-icon svg{width:28px;height:28px;fill:var(--gold)}
.feature-card h3{font-size:1rem;font-weight:700;color:var(--text-white);margin-bottom:10px}
.feature-card p{font-size:.85rem;color:var(--text-muted);line-height:1.7}

/* ===== Expert Cards ===== */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:22px}
.expert-card{background:var(--navy-card);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border-color);transition:all var(--transition)}
.expert-card:hover{border-color:rgba(201,168,76,.4);box-shadow:var(--shadow-gold)}
.expert-avatar{width:100%;aspect-ratio:1;overflow:hidden}
.expert-avatar img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.expert-card:hover .expert-avatar img{transform:scale(1.05)}
.expert-info{padding:16px}
.expert-name{font-size:1rem;font-weight:700;color:var(--text-white);margin-bottom:4px}
.expert-title{font-size:.8rem;color:var(--gold);margin-bottom:8px}
.expert-desc{font-size:.82rem;color:var(--text-muted);line-height:1.6;margin-bottom:12px}
.expert-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.expert-tag{font-size:.7rem;background:rgba(124,58,237,.15);color:#a78bfa;padding:2px 8px;border-radius:4px}
.expert-btns{display:flex;gap:8px}
.btn-sm{padding:6px 14px;border-radius:20px;font-size:.78rem;font-weight:600;transition:all var(--transition)}
.btn-gold-sm{background:linear-gradient(135deg,var(--gold),var(--gold-light));color:#0d0f1a}
.btn-ghost-sm{border:1px solid var(--border-color);color:var(--text-muted);background:transparent}
.btn-ghost-sm:hover{border-color:var(--gold);color:var(--gold)}

/* ===== Review Cards ===== */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.review-card{background:var(--navy-card);border-radius:var(--radius);padding:22px;border:1px solid var(--border-color)}
.review-stars{display:flex;gap:3px;margin-bottom:10px}
.review-stars svg{width:16px;height:16px;fill:var(--gold)}
.review-text{font-size:.88rem;color:var(--text-main);line-height:1.7;margin-bottom:14px;font-style:italic}
.review-author{display:flex;align-items:center;gap:10px}
.review-avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--gold),var(--gold-dark));display:flex;align-items:center;justify-content:center;font-weight:700;color:#0d0f1a;font-size:.9rem}
.review-name{font-size:.85rem;font-weight:600;color:var(--text-white)}
.review-date{font-size:.75rem;color:var(--text-muted)}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--navy-card);border-radius:var(--radius);border:1px solid var(--border-color);overflow:hidden}
.faq-q{padding:18px 22px;display:flex;align-items:center;justify-content:space-between;cursor:pointer;font-weight:600;color:var(--text-white);font-size:.95rem;transition:background var(--transition)}
.faq-q:hover{background:rgba(201,168,76,.06)}
.faq-q.open{color:var(--gold)}
.faq-arrow{width:20px;height:20px;fill:var(--text-muted);transition:transform .3s;flex-shrink:0}
.faq-q.open .faq-arrow{transform:rotate(180deg);fill:var(--gold)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s}
.faq-a.open{max-height:300px;padding:0 22px 18px}
.faq-a p{color:var(--text-muted);font-size:.88rem;line-height:1.8}

/* ===== Partner Logos ===== */
.partner-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:16px}
.partner-item{background:var(--navy-card);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:14px 24px;font-size:.85rem;font-weight:600;color:var(--text-muted);transition:all var(--transition)}
.partner-item:hover{border-color:var(--gold);color:var(--gold)}

/* ===== Contact Section ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.contact-card{background:var(--navy-card);border-radius:var(--radius);padding:28px;border:1px solid var(--border-color)}
.contact-card h3{font-size:1.1rem;font-weight:700;color:var(--text-white);margin-bottom:18px;padding-bottom:12px;border-bottom:1px solid var(--border-color)}
.contact-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:14px}
.contact-icon{width:36px;height:36px;background:rgba(201,168,76,.12);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.contact-icon svg{width:18px;height:18px;fill:var(--gold)}
.contact-label{font-size:.78rem;color:var(--text-muted);margin-bottom:2px}
.contact-value{font-size:.9rem;color:var(--text-white);font-weight:500}
.qrcode-row{display:flex;gap:20px;margin-top:16px;flex-wrap:wrap}
.qrcode-item{text-align:center}
.qrcode-item img{width:100px;height:100px;border-radius:8px;border:2px solid var(--border-color)}
.qrcode-item p{font-size:.75rem;color:var(--text-muted);margin-top:6px}

/* ===== Social Share ===== */
.share-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:center;padding:20px 0}
.share-label{font-size:.85rem;color:var(--text-muted)}
.share-btn{display:flex;align-items:center;gap:6px;padding:8px 16px;border-radius:20px;font-size:.82rem;font-weight:600;transition:all var(--transition);border:1px solid var(--border-color);color:var(--text-muted);background:var(--navy-card)}
.share-btn:hover{transform:translateY(-2px)}
.share-btn.weixin:hover{border-color:#07c160;color:#07c160}
.share-btn.weibo:hover{border-color:#e6162d;color:#e6162d}
.share-btn.douyin:hover{border-color:#fe2c55;color:#fe2c55}
.share-btn.bilibili:hover{border-color:#00a1d6;color:#00a1d6}

/* ===== Footer ===== */
.site-footer{background:var(--navy-mid);border-top:1px solid var(--border-color);padding:48px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:40px}
.footer-brand .logo-text{font-size:1.4rem;font-weight:800;background:linear-gradient(135deg,var(--gold),var(--gold-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:10px}
.footer-brand p{font-size:.85rem;color:var(--text-muted);line-height:1.8;margin-bottom:16px}
.footer-social{display:flex;gap:10px}
.social-icon{width:36px;height:36px;background:var(--navy-card);border:1px solid var(--border-color);border-radius:8px;display:flex;align-items:center;justify-content:center;transition:all var(--transition)}
.social-icon:hover{border-color:var(--gold);background:rgba(201,168,76,.1)}
.social-icon svg{width:18px;height:18px;fill:var(--text-muted)}
.social-icon:hover svg{fill:var(--gold)}
.footer-col h4{font-size:.9rem;font-weight:700;color:var(--text-white);margin-bottom:14px;padding-bottom:8px;border-bottom:1px solid var(--border-color)}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{font-size:.83rem;color:var(--text-muted);transition:color var(--transition)}
.footer-col ul li a:hover{color:var(--gold)}
.footer-bottom{border-top:1px solid var(--border-color);padding:18px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:gap;gap:12px}
.footer-copy{font-size:.8rem;color:var(--text-muted)}
.footer-copy a{color:var(--text-muted)}
.footer-copy a:hover{color:var(--gold)}
.footer-links{display:flex;gap:16px}
.footer-links a{font-size:.8rem;color:var(--text-muted)}
.footer-links a:hover{color:var(--gold)}
.update-time{font-size:.78rem;color:var(--text-muted);margin-top:4px}

/* ===== Page Header ===== */
.page-header{background:linear-gradient(135deg,var(--navy-mid) 0%,var(--navy) 100%);padding:48px 0;border-bottom:1px solid var(--border-color)}
.page-header h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;color:var(--text-white);margin-bottom:10px}
.page-header h1 span{color:var(--gold)}
.page-header p{color:var(--text-muted);font-size:1rem;max-width:600px;line-height:1.8}

/* ===== How-To Steps ===== */
.steps-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px}
.step-card{background:var(--navy-card);border-radius:var(--radius);padding:24px;border:1px solid var(--border-color);text-align:center;position:relative}
.step-num{width:44px;height:44px;background:linear-gradient(135deg,var(--gold),var(--gold-light));border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.1rem;color:#0d0f1a;margin:0 auto 14px}
.step-card h3{font-size:.95rem;font-weight:700;color:var(--text-white);margin-bottom:8px}
.step-card p{font-size:.83rem;color:var(--text-muted);line-height:1.7}

/* ===== Tags ===== */
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag{background:var(--navy-card);border:1px solid var(--border-color);color:var(--text-muted);padding:5px 12px;border-radius:20px;font-size:.8rem;transition:all var(--transition)}
.tag:hover{border-color:var(--gold);color:var(--gold)}

/* ===== Stats Bar ===== */
.stats-bar{background:linear-gradient(135deg,rgba(201,168,76,.08),rgba(201,168,76,.03));border:1px solid rgba(201,168,76,.15);border-radius:var(--radius);padding:28px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-item .num{font-size:2rem;font-weight:800;color:var(--gold);line-height:1}
.stat-item .label{font-size:.8rem;color:var(--text-muted);margin-top:6px}

/* ===== Live Badge ===== */
.live-badge{display:inline-flex;align-items:center;gap:5px;background:#e84040;color:#fff;padding:3px 10px;border-radius:4px;font-size:.72rem;font-weight:700}
.live-dot{width:7px;height:7px;background:#fff;border-radius:50%;animation:pulse 1.2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* ===== Lazy Load ===== */
img.lazy{opacity:0;transition:opacity .4s}
img.lazy.loaded{opacity:1}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:rgba(13,15,26,.98);flex-direction:column;padding:16px;border-bottom:1px solid var(--border-color);gap:4px}
  .main-nav.open{display:flex}
  .nav-toggle{display:flex}
  .hero-section{min-height:400px}
  .hero-btns{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
  .footer-bottom{flex-direction:column;text-align:center}
}
@media(max-width:480px){
  .hero-content h1{font-size:1.8rem}
  .stats-bar{grid-template-columns:repeat(2,1fr);gap:14px}
  .qrcode-row{justify-content:center}
}

/* ===== Animations ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.fade-in{animation:fadeInUp .6s ease forwards}
.fade-in-delay-1{animation-delay:.1s;opacity:0}
.fade-in-delay-2{animation-delay:.2s;opacity:0}
.fade-in-delay-3{animation-delay:.3s;opacity:0}

/* ===== Misc ===== */
.divider{height:1px;background:var(--border-color);margin:32px 0}
.text-gold{color:var(--gold)}
.text-muted{color:var(--text-muted)}
.text-center{text-align:center}
.mt-8{margin-top:8px}
.mt-16{margin-top:16px}
.mt-24{margin-top:24px}
.mb-16{margin-bottom:16px}
.flex-center{display:flex;align-items:center;justify-content:center}
.gap-12{gap:12px}
.section-more{text-align:center;margin-top:32px}
.btn-more{display:inline-flex;align-items:center;gap:8px;background:transparent;border:1px solid var(--border-color);color:var(--text-muted);padding:10px 24px;border-radius:30px;font-size:.88rem;transition:all var(--transition)}
.btn-more:hover{border-color:var(--gold);color:var(--gold)}