/* =============================================
   黑丝「星河流光」原创主题 CSS
   设计理念：浩瀚星空 × 流光视频
   配色：午夜靛蓝 + 流光金 + 星辰蓝 + 极光绿
   ============================================= */

:root {
  --bg-deep: #0d1321;
  --bg-mid: #1a1f35;
  --bg-card: #252a40;
  --bg-card-hover: #2e3450;
  --gold: #f0c040;
  --gold-dim: rgba(240,192,64,0.15);
  --blue: #4da8da;
  --blue-dim: rgba(77,168,218,0.12);
  --green: #2dd4a8;
  --green-dim: rgba(45,212,168,0.12);
  --text: #e8e6f0;
  --text-sub: #9a97b0;
  --text-dim: #6b6880;
  --grad-gold: linear-gradient(135deg,#f0c040,#e8a020);
  --grad-blue: linear-gradient(135deg,#4da8da,#3b7dd8);
  --grad-aurora: linear-gradient(135deg,#2dd4a8,#4da8da,#f0c040);
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --glow-gold: 0 0 20px rgba(240,192,64,0.3);
  --glow-blue: 0 0 20px rgba(77,168,218,0.3);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;background:var(--bg-deep);color:var(--text);line-height:1.7;overflow-x:hidden}
a{color:var(--gold);text-decoration:none;transition:color .3s}
a:hover{color:var(--blue)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}

body::before{
  content:'';position:fixed;top:0;left:0;width:100%;height:100%;z-index:0;pointer-events:none;
  background:
    radial-gradient(1px 1px at 10% 20%,rgba(240,192,64,0.4),transparent),
    radial-gradient(1px 1px at 30% 60%,rgba(77,168,218,0.3),transparent),
    radial-gradient(1.5px 1.5px at 50% 10%,rgba(255,255,255,0.5),transparent),
    radial-gradient(1px 1px at 70% 80%,rgba(45,212,168,0.3),transparent),
    radial-gradient(1px 1px at 90% 40%,rgba(240,192,64,0.3),transparent),
    radial-gradient(1.5px 1.5px at 15% 85%,rgba(255,255,255,0.4),transparent),
    radial-gradient(1px 1px at 45% 45%,rgba(77,168,218,0.4),transparent),
    radial-gradient(1px 1px at 80% 15%,rgba(240,192,64,0.5),transparent),
    radial-gradient(1px 1px at 60% 70%,rgba(255,255,255,0.3),transparent),
    radial-gradient(1.5px 1.5px at 25% 35%,rgba(45,212,168,0.4),transparent);
  background-size:100% 100%;
}
body>*{position:relative;z-index:1}

/* 星河导航条 */
.stellar-nav{
  position:fixed;top:0;left:0;width:100%;z-index:1000;
  background:rgba(13,19,33,0.88);backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(240,192,64,0.1);transition:all .4s;
}
.stellar-nav::after{
  content:'';position:absolute;bottom:0;left:0;width:100%;height:2px;
  background:var(--grad-aurora);animation:flowLight 4s linear infinite;background-size:200% 100%;
}
@keyframes flowLight{0%{background-position:0% 0}100%{background-position:200% 0}}
.nav-inner{max-width:1340px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:68px}
.nav-brand{display:flex;align-items:center;gap:10px;font-size:1.25rem;font-weight:700;color:var(--gold)}
.nav-brand img{width:38px;height:38px;border-radius:8px}
.nav-center{display:flex;gap:6px}
.nav-center a{padding:8px 18px;border-radius:20px;font-size:.92rem;color:var(--text-sub);transition:all .3s}
.nav-center a:hover,.nav-center a.active{color:var(--gold);background:var(--gold-dim)}
.nav-search-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid rgba(240,192,64,0.2);
  background:transparent;color:var(--gold);font-size:1.1rem;cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:all .3s;
}
.nav-search-btn:hover{background:var(--gold-dim);border-color:var(--gold)}
.nav-mobile{display:none;background:transparent;border:none;color:var(--gold);font-size:1.5rem;cursor:pointer}

/* 搜索浮层 */
.search-overlay{position:fixed;top:0;left:0;width:100%;height:100%;z-index:2000;background:rgba(13,19,33,0.95);backdrop-filter:blur(20px);display:none;align-items:center;justify-content:center}
.search-overlay.open{display:flex}
.search-overlay-inner{width:90%;max-width:640px;text-align:center}
.search-overlay-inner h3{font-size:1.5rem;color:var(--gold);margin-bottom:24px}
.search-overlay-inner .s-input{width:100%;padding:16px 24px;border-radius:40px;border:2px solid rgba(240,192,64,0.3);background:var(--bg-card);color:var(--text);font-size:1.1rem;outline:none;transition:border-color .3s}
.search-overlay-inner .s-input:focus{border-color:var(--gold)}
.search-overlay .s-close{position:absolute;top:30px;right:40px;font-size:2rem;color:var(--text-sub);cursor:pointer;background:none;border:none;transition:color .3s}
.search-overlay .s-close:hover{color:var(--gold)}

/* 全屏Hero */
.hero-galaxy{min-height:100vh;display:flex;align-items:center;padding:100px 24px 60px;background:linear-gradient(160deg,var(--bg-deep) 0%,#111833 40%,#0d1321 100%);overflow:hidden;position:relative}
.hero-galaxy::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(240,192,64,0.06),transparent 70%);border-radius:50%}
.hero-galaxy::after{content:'';position:absolute;bottom:-30%;left:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(77,168,218,0.05),transparent 70%);border-radius:50%}
.hero-wrap{max-width:1340px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-text h1{font-size:3.2rem;font-weight:800;line-height:1.2;margin-bottom:20px}
.hero-text h1 .glow{background:var(--grad-gold);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-text .hero-desc{font-size:1.1rem;color:var(--text-sub);margin-bottom:32px;max-width:520px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.btn-star{padding:14px 36px;border-radius:30px;font-size:1rem;font-weight:600;background:var(--grad-gold);color:#0d1321;border:none;cursor:pointer;transition:all .3s;box-shadow:var(--glow-gold)}
.btn-star:hover{transform:translateY(-2px);box-shadow:0 0 30px rgba(240,192,64,0.5)}
.btn-orbit{padding:14px 36px;border-radius:30px;font-size:1rem;font-weight:600;background:transparent;color:var(--blue);border:2px solid var(--blue);cursor:pointer;transition:all .3s}
.btn-orbit:hover{background:var(--blue-dim);box-shadow:var(--glow-blue)}

/* Hero视频堆叠 */
.hero-stack{position:relative;height:420px;perspective:1000px}
.stack-card{position:absolute;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all .5s;cursor:pointer}
.stack-card img{width:100%;height:100%;object-fit:cover}
.stack-card:nth-child(1){width:300px;height:200px;top:20px;left:40px;z-index:3;transform:rotate(-3deg)}
.stack-card:nth-child(2){width:260px;height:170px;top:100px;left:180px;z-index:2;transform:rotate(4deg)}
.stack-card:nth-child(3){width:240px;height:160px;top:180px;left:60px;z-index:1;transform:rotate(-6deg)}
.stack-card:hover{z-index:10;transform:rotate(0deg) scale(1.08);box-shadow:var(--glow-gold)}
.stack-card .play-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(13,19,33,0.4);opacity:0;transition:opacity .3s}
.stack-card:hover .play-overlay{opacity:1}
.play-circle{width:56px;height:56px;border-radius:50%;background:rgba(240,192,64,0.9);display:flex;align-items:center;justify-content:center;font-size:1.4rem;color:#0d1321}

/* 视频星轨区 */
.star-tracks{padding:80px 0;overflow:hidden;background:var(--bg-mid)}
.star-tracks .section-label{text-align:center;color:var(--gold);font-size:.85rem;letter-spacing:4px;text-transform:uppercase;margin-bottom:8px}
.star-tracks h2{text-align:center;font-size:2rem;margin-bottom:40px}
.track{display:flex;gap:20px;padding:10px 0;animation:scrollTrack 30s linear infinite}
.track.reverse{animation-direction:reverse}
@keyframes scrollTrack{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}
.track-card{flex:0 0 280px;border-radius:var(--radius);overflow:hidden;background:var(--bg-card);transition:all .4s;position:relative}
.track-card:hover{transform:translateY(-6px);box-shadow:var(--glow-gold)}
.track-thumb{position:relative;height:160px;overflow:hidden}
.track-thumb img{width:100%;height:100%;object-fit:cover}
.track-thumb .duration{position:absolute;bottom:8px;right:8px;padding:2px 8px;border-radius:4px;background:rgba(0,0,0,0.7);color:#fff;font-size:.75rem}
.track-thumb .play-hover{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(13,19,33,0.5);opacity:0;transition:opacity .3s}
.track-card:hover .play-hover{opacity:1}
.play-tri{width:0;height:0;border-style:solid;border-width:16px 0 16px 28px;border-color:transparent transparent transparent var(--gold)}
.track-info{padding:14px 16px}
.track-info h4{font-size:.95rem;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.track-info .track-meta{font-size:.8rem;color:var(--text-dim);display:flex;gap:12px}

/* 通用区块 */
.section{padding:80px 24px;max-width:1340px;margin:0 auto}
.section-dark{background:var(--bg-deep)}
.section-mid{background:var(--bg-mid)}
.section-label-center{text-align:center;color:var(--gold);font-size:.82rem;letter-spacing:5px;text-transform:uppercase;margin-bottom:10px}
.section-title-center{text-align:center;font-size:2.2rem;font-weight:700;margin-bottom:12px}
.section-desc-center{text-align:center;color:var(--text-sub);font-size:1rem;margin-bottom:48px;max-width:680px;margin-left:auto;margin-right:auto}

/* 六边形蜂巢服务区 */
.honeycomb-wrap{padding:80px 24px;background:var(--bg-deep)}
.honeycomb{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.hex-card{background:var(--bg-card);border-radius:var(--radius);padding:36px 28px;border:1px solid rgba(240,192,64,0.08);transition:all .4s;position:relative;overflow:hidden}
.hex-card::before{content:'';position:absolute;top:-2px;left:-2px;right:-2px;bottom:-2px;border-radius:var(--radius);z-index:-1;opacity:0;transition:opacity .4s;background:var(--grad-aurora)}
.hex-card:hover::before{opacity:1}
.hex-card:hover{background:var(--bg-card-hover);transform:translateY(-4px)}
.hex-icon{width:56px;height:56px;border-radius:12px;background:var(--gold-dim);display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin-bottom:18px}
.hex-card h4{font-size:1.1rem;font-weight:600;margin-bottom:10px}
.hex-card p{font-size:.9rem;color:var(--text-sub);line-height:1.6}

/* AI仪表盘区 */
.ai-dashboard{padding:80px 24px;background:var(--bg-mid)}
.dashboard-grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.dash-panel{background:var(--bg-card);border-radius:var(--radius);padding:32px;border:1px solid rgba(77,168,218,0.1);text-align:center;transition:all .4s}
.dash-panel:hover{border-color:var(--blue);box-shadow:var(--glow-blue);transform:translateY(-4px)}
.dash-ring{width:120px;height:120px;border-radius:50%;margin:0 auto 20px;background:conic-gradient(var(--blue) var(--pct,75%),rgba(77,168,218,0.1) 0);display:flex;align-items:center;justify-content:center;position:relative}
.dash-ring::after{content:'';position:absolute;inset:10px;border-radius:50%;background:var(--bg-card)}
.dash-ring span{position:relative;z-index:1;font-size:1.5rem;font-weight:700;color:var(--blue)}
.dash-panel h4{font-size:1.05rem;margin-bottom:8px}
.dash-panel p{font-size:.85rem;color:var(--text-sub)}

/* 专家星座区 */
.expert-constellation{padding:80px 24px;background:var(--bg-deep)}
.constellation-grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.star-expert{text-align:center;transition:all .4s}
.star-expert:hover{transform:translateY(-8px)}
.expert-avatar{width:130px;height:130px;border-radius:50%;margin:0 auto 16px;border:3px solid rgba(240,192,64,0.2);overflow:hidden;transition:border-color .4s;position:relative}
.expert-avatar::after{content:'';position:absolute;inset:-4px;border-radius:50%;border:2px dashed rgba(240,192,64,0.15);animation:orbitSpin 12s linear infinite}
@keyframes orbitSpin{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}
.star-expert:hover .expert-avatar{border-color:var(--gold);box-shadow:var(--glow-gold)}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.star-expert h4{font-size:1rem;margin-bottom:4px}
.star-expert .expert-role{font-size:.82rem;color:var(--gold);margin-bottom:6px}
.star-expert .expert-desc{font-size:.8rem;color:var(--text-dim)}

/* 社区星球区 */
.planet-community{padding:80px 24px;background:var(--bg-mid)}
.planet-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.planet-card{background:var(--bg-card);border-radius:20px;padding:32px 20px;text-align:center;border:1px solid rgba(45,212,168,0.08);transition:all .4s}
.planet-card:hover{border-color:var(--green);box-shadow:0 0 20px rgba(45,212,168,0.2);transform:translateY(-6px)}
.planet-icon{width:64px;height:64px;border-radius:50%;margin:0 auto 16px;background:var(--green-dim);display:flex;align-items:center;justify-content:center;font-size:1.6rem}
.planet-card h4{font-size:1rem;margin-bottom:8px}
.planet-card p{font-size:.85rem;color:var(--text-sub)}

/* 数据统计条 */
.stats-bar{padding:48px 24px;background:linear-gradient(90deg,rgba(240,192,64,0.05),rgba(77,168,218,0.05),rgba(45,212,168,0.05));border-top:1px solid rgba(240,192,64,0.08);border-bottom:1px solid rgba(240,192,64,0.08)}
.stats-inner{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-item .stat-num{font-size:2.4rem;font-weight:800;color:var(--gold)}
.stat-item .stat-label{font-size:.88rem;color:var(--text-sub);margin-top:4px}

/* 用户评价流星区 */
.meteor-reviews{padding:80px 24px;background:var(--bg-deep);overflow:hidden}
.meteor-track{display:flex;gap:24px;animation:meteorScroll 25s linear infinite}
@keyframes meteorScroll{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}
.meteor-card{flex:0 0 340px;background:var(--bg-card);border-radius:var(--radius);padding:28px;border:1px solid rgba(240,192,64,0.06);position:relative}
.meteor-card::before{content:'★';position:absolute;top:12px;right:16px;color:var(--gold);font-size:.8rem;opacity:.5}
.meteor-card .review-stars{color:var(--gold);font-size:.9rem;margin-bottom:12px}
.meteor-card .review-text{font-size:.92rem;color:var(--text-sub);margin-bottom:16px;line-height:1.7}
.meteor-card .reviewer{display:flex;align-items:center;gap:10px}
.reviewer-avatar{width:36px;height:36px;border-radius:50%;background:var(--gold-dim);display:flex;align-items:center;justify-content:center;font-size:.8rem;color:var(--gold)}
.reviewer-name{font-size:.85rem;font-weight:600}
.reviewer-tag{font-size:.75rem;color:var(--text-dim)}

/* FAQ手风琴 */
.faq-section{padding:80px 24px;background:var(--bg-mid)}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid rgba(240,192,64,0.08);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden;transition:all .3s}
.faq-item:hover{border-color:rgba(240,192,64,0.2)}
.faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:.98rem;transition:background .3s}
.faq-q:hover{background:rgba(240,192,64,0.04)}
.faq-q .arrow{color:var(--gold);transition:transform .3s;font-size:.9rem}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s;padding:0 24px;color:var(--text-sub);font-size:.92rem;line-height:1.8}
.faq-item.open .faq-a{max-height:300px;padding:0 24px 18px}

/* 星河页脚 */
.galaxy-footer{background:linear-gradient(180deg,var(--bg-mid),var(--bg-deep));border-top:1px solid rgba(240,192,64,0.08);padding:60px 24px 0}
.footer-grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer-brand-col img{width:110px;margin-bottom:14px}
.footer-brand-col p{font-size:.88rem;color:var(--text-sub);line-height:1.7;max-width:320px}
.footer-col h5{font-size:1rem;color:var(--gold);margin-bottom:16px;font-weight:600}
.footer-col a{display:block;font-size:.88rem;color:var(--text-sub);padding:4px 0;transition:color .3s}
.footer-col a:hover{color:var(--gold)}
.footer-bottom{max-width:1200px;margin:40px auto 0;padding:20px 0;border-top:1px solid rgba(240,192,64,0.06);display:flex;justify-content:space-between;align-items:center;font-size:.82rem;color:var(--text-dim)}

/* 面包屑 */
.breadcrumb{max-width:1340px;margin:0 auto;padding:16px 24px;font-size:.85rem;color:var(--text-dim)}
.breadcrumb a{color:var(--text-sub)}
.breadcrumb a:hover{color:var(--gold)}
.breadcrumb span{margin:0 6px}

/* 内页Hero */
.page-banner{padding:120px 24px 50px;text-align:center;background:linear-gradient(160deg,var(--bg-deep),#111833)}
.page-banner h1{font-size:2.6rem;font-weight:800;margin-bottom:14px}
.page-banner h1 .glow{background:var(--grad-gold);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.page-banner p{color:var(--text-sub);font-size:1.05rem;max-width:640px;margin:0 auto}

/* 标签云 */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:40px}
.tag-cloud button{padding:8px 20px;border-radius:20px;border:1px solid rgba(240,192,64,0.15);background:transparent;color:var(--text-sub);font-size:.88rem;cursor:pointer;transition:all .3s}
.tag-cloud button:hover,.tag-cloud button.active{background:var(--gold);color:#0d1321;border-color:var(--gold)}

/* 视频网格 */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1200px;margin:0 auto}
.vg-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;transition:all .4s}
.vg-card:hover{transform:translateY(-6px);box-shadow:var(--glow-gold)}
.vg-thumb{position:relative;height:180px;overflow:hidden}
.vg-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.vg-card:hover .vg-thumb img{transform:scale(1.06)}
.vg-thumb .vg-play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(13,19,33,0.4);opacity:0;transition:opacity .3s}
.vg-card:hover .vg-play{opacity:1}
.vg-thumb .vg-dur{position:absolute;bottom:8px;right:10px;padding:2px 8px;border-radius:4px;background:rgba(0,0,0,0.75);color:#fff;font-size:.75rem}
.vg-thumb .vg-tag{position:absolute;top:10px;left:10px;padding:3px 10px;border-radius:10px;background:var(--gold);color:#0d1321;font-size:.72rem;font-weight:600}
.vg-body{padding:16px}
.vg-body h4{font-size:.98rem;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.vg-body .vg-meta{font-size:.8rem;color:var(--text-dim);display:flex;gap:14px}

/* 创作者聚光灯 */
.spotlight-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;max-width:1100px;margin:0 auto}
.spotlight-card{display:flex;gap:20px;background:var(--bg-card);border-radius:var(--radius);padding:24px;border:1px solid rgba(240,192,64,0.06);transition:all .4s}
.spotlight-card:hover{border-color:var(--gold);transform:translateY(-4px)}
.spotlight-img{width:90px;height:90px;border-radius:50%;overflow:hidden;flex-shrink:0}
.spotlight-img img{width:100%;height:100%;object-fit:cover}
.spotlight-info h4{font-size:1.05rem;margin-bottom:4px}
.spotlight-info .sp-role{font-size:.82rem;color:var(--gold);margin-bottom:8px}
.spotlight-info p{font-size:.85rem;color:var(--text-sub)}

/* 时间线 */
.timeline{max-width:800px;margin:0 auto;position:relative;padding-left:40px}
.timeline::before{content:'';position:absolute;left:15px;top:0;bottom:0;width:2px;background:linear-gradient(180deg,var(--gold),var(--blue),var(--green))}
.tl-item{position:relative;margin-bottom:36px}
.tl-item::before{content:'';position:absolute;left:-33px;top:4px;width:14px;height:14px;border-radius:50%;background:var(--gold);border:3px solid var(--bg-deep)}
.tl-item h4{font-size:1.05rem;margin-bottom:6px}
.tl-item p{font-size:.9rem;color:var(--text-sub)}

/* 话题卡片 */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1200px;margin:0 auto}
.topic-card{background:var(--bg-card);border-radius:var(--radius);padding:24px;border-left:4px solid var(--gold);transition:all .4s}
.topic-card:nth-child(2){border-left-color:var(--blue)}
.topic-card:nth-child(3){border-left-color:var(--green)}
.topic-card:nth-child(4){border-left-color:var(--gold)}
.topic-card:nth-child(5){border-left-color:var(--blue)}
.topic-card:nth-child(6){border-left-color:var(--green)}
.topic-card:hover{transform:translateX(6px);box-shadow:var(--shadow)}
.topic-card h4{font-size:1rem;margin-bottom:8px}
.topic-card p{font-size:.85rem;color:var(--text-sub);margin-bottom:10px}
.topic-card .topic-stats{font-size:.78rem;color:var(--text-dim)}

/* 工具卡片 */
.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1200px;margin:0 auto}
.tool-card{background:var(--bg-card);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:all .5s;position:relative;overflow:hidden}
.tool-card::after{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:conic-gradient(transparent,rgba(240,192,64,0.05),transparent,rgba(77,168,218,0.05),transparent);animation:toolSpin 8s linear infinite;opacity:0;transition:opacity .4s}
.tool-card:hover::after{opacity:1}
@keyframes toolSpin{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}
.tool-card>*{position:relative;z-index:1}
.tool-card:hover{transform:translateY(-8px) scale(1.02);box-shadow:var(--glow-gold)}
.tool-icon-lg{width:72px;height:72px;border-radius:16px;margin:0 auto 18px;background:var(--gold-dim);display:flex;align-items:center;justify-content:center;font-size:2rem}
.tool-card h4{font-size:1.1rem;margin-bottom:10px}
.tool-card p{font-size:.88rem;color:var(--text-sub)}

/* 直播卡片 */
.live-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1200px;margin:0 auto}
.live-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;transition:all .4s}
.live-card:hover{transform:translateY(-6px);box-shadow:var(--glow-gold)}
.live-thumb{position:relative;height:180px;overflow:hidden}
.live-thumb img{width:100%;height:100%;object-fit:cover}
.live-badge{position:absolute;top:10px;left:10px;padding:4px 12px;border-radius:12px;background:rgba(255,60,60,0.9);color:#fff;font-size:.72rem;font-weight:700;animation:livePulse 2s ease-in-out infinite}
@keyframes livePulse{0%,100%{opacity:1}50%{opacity:.6}}
.live-thumb .play-hover{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(13,19,33,0.4);opacity:0;transition:opacity .3s}
.live-card:hover .play-hover{opacity:1}
.live-info{padding:14px 16px}
.live-info h4{font-size:.95rem;margin-bottom:4px}
.live-info .live-meta{font-size:.8rem;color:var(--text-dim)}

/* 视频横向推荐带 */
.video-ribbon{display:flex;gap:20px;overflow-x:auto;padding:10px 0 20px;scrollbar-width:thin;scrollbar-color:var(--gold-dim) transparent}
.video-ribbon::-webkit-scrollbar{height:4px}
.video-ribbon::-webkit-scrollbar-thumb{background:var(--gold-dim);border-radius:2px}
.ribbon-card{flex:0 0 260px;background:var(--bg-card);border-radius:var(--radius-sm);overflow:hidden;transition:all .4s}
.ribbon-card:hover{transform:translateY(-4px);box-shadow:var(--glow-gold)}
.ribbon-thumb{position:relative;height:150px;overflow:hidden}
.ribbon-thumb img{width:100%;height:100%;object-fit:cover}
.ribbon-thumb .play-btn-sm{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(13,19,33,0.4);opacity:0;transition:opacity .3s}
.ribbon-thumb .play-btn-sm::after{content:'';width:0;height:0;border-style:solid;border-width:12px 0 12px 20px;border-color:transparent transparent transparent var(--gold)}
.ribbon-card:hover .play-btn-sm{opacity:1}
.ribbon-info{padding:12px 14px}
.ribbon-info .ribbon-title{font-size:.88rem;margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ribbon-info .ribbon-meta{font-size:.78rem;color:var(--text-dim)}

/* 滚动揭示 */
.js-enabled .reveal{opacity:0;transform:translateY(30px);transition:opacity .7s,transform .7s}
.js-enabled .reveal.visible{opacity:1;transform:translateY(0)}

/* 响应式 */
@media(max-width:1024px){
  .hero-wrap{grid-template-columns:1fr;text-align:center}
  .hero-text .hero-desc{margin:0 auto 32px}
  .hero-actions{justify-content:center}
  .hero-stack{display:none}
  .honeycomb,.dashboard-grid{grid-template-columns:repeat(2,1fr)}
  .constellation-grid,.planet-grid{grid-template-columns:repeat(2,1fr)}
  .stats-inner{grid-template-columns:repeat(2,1fr);gap:28px}
  .video-grid,.spotlight-grid,.topic-grid,.tool-grid,.live-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-center{display:none;position:absolute;top:68px;left:0;width:100%;background:rgba(13,19,33,0.98);flex-direction:column;padding:16px 0;border-bottom:1px solid rgba(240,192,64,0.1)}
  .nav-center.open{display:flex}
  .nav-center a{padding:12px 24px;border-radius:0}
  .nav-mobile{display:block}
  .nav-search-btn{display:none}
  .hero-text h1{font-size:2rem}
  .page-banner h1{font-size:1.8rem}
  .honeycomb,.dashboard-grid,.video-grid,.topic-grid,.tool-grid,.live-grid{grid-template-columns:1fr}
  .constellation-grid,.planet-grid,.stats-inner{grid-template-columns:repeat(2,1fr)}
  .spotlight-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px;text-align:center}
  .section-title-center{font-size:1.6rem}
}
@media(max-width:480px){
  .hero-text h1{font-size:1.6rem}
  .btn-star,.btn-orbit{padding:12px 24px;font-size:.9rem}
  .constellation-grid,.planet-grid,.stats-inner{grid-template-columns:1fr}
}

/* ===== 创作工具展示 ===== */
.tool-showcase{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;max-width:1200px;margin:0 auto;padding:0 20px}
.tool-item{background:var(--bg-card);border:1px solid rgba(240,192,64,0.1);border-radius:var(--radius);padding:36px 28px;transition:all .35s ease;position:relative;overflow:hidden}
.tool-item::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:var(--grad-aurora);transform:scaleX(0);transform-origin:left;transition:transform .4s ease}
.tool-item:hover{transform:translateY(-6px);border-color:var(--gold);box-shadow:var(--glow-gold)}
.tool-item:hover::before{transform:scaleX(1)}
.tool-icon-wrap{margin-bottom:20px}
.tool-num{display:inline-block;font-size:2rem;font-weight:800;background:var(--grad-gold);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-family:'Georgia',serif}
.tool-item h4{color:var(--gold);font-size:1.15rem;margin-bottom:12px}
.tool-item p{color:var(--text-sub);font-size:.92rem;line-height:1.7}
.tool-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.tool-tags span{background:var(--gold-dim);color:var(--gold);padding:4px 12px;border-radius:20px;font-size:.78rem}

/* ===== 优势网格 ===== */
.advantage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;max-width:1200px;margin:0 auto;padding:0 20px}
.adv-card{background:var(--bg-card);border:1px solid rgba(77,168,218,0.15);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:all .35s ease}
.adv-card:hover{transform:translateY(-5px);border-color:var(--blue);box-shadow:var(--glow-blue)}
.adv-card h4{color:var(--blue);font-size:1.1rem;margin-bottom:12px}
.adv-card p{color:var(--text-sub);font-size:.9rem;line-height:1.6}

/* ===== 直播卡片补充 ===== */
.live-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1200px;margin:0 auto;padding:0 20px}
.live-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;transition:transform .3s ease}
.live-card:hover{transform:translateY(-5px)}
.live-thumb{position:relative;overflow:hidden}
.live-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block}
.live-badge{position:absolute;top:12px;left:12px;background:rgba(255,50,50,0.9);color:#fff;padding:4px 12px;border-radius:20px;font-size:.78rem;animation:livePulse 1.5s infinite}
@keyframes livePulse{0%,100%{opacity:1}50%{opacity:.6}}
.play-hover{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0.4);opacity:0;transition:opacity .3s ease}
.live-info{padding:16px}
.live-info h4{color:var(--text);font-size:1rem;margin-bottom:6px}
.live-meta{color:var(--text-sub);font-size:.82rem}

/* ===== 话题卡片补充 ===== */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:1200px;margin:0 auto;padding:0 20px}
.topic-card{background:var(--bg-card);border:1px solid rgba(45,212,168,0.1);border-radius:var(--radius);padding:28px 24px;transition:all .3s ease}
.topic-card:hover{border-color:var(--green);transform:translateY(-4px);box-shadow:0 0 15px rgba(45,212,168,0.2)}
.topic-card h4{color:var(--green);font-size:1.05rem;margin-bottom:10px}
.topic-card p{color:var(--text-sub);font-size:.88rem;line-height:1.6;margin-bottom:12px}
.topic-stats{color:var(--text-dim);font-size:.8rem;border-top:1px solid rgba(255,255,255,0.05);padding-top:10px}

/* ===== 响应式补充 ===== */
@media(max-width:900px){
  .tool-showcase{grid-template-columns:repeat(2,1fr)}
  .advantage-grid{grid-template-columns:repeat(2,1fr)}
  .live-grid{grid-template-columns:repeat(2,1fr)}
  .topic-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:600px){
  .tool-showcase{grid-template-columns:1fr}
  .advantage-grid{grid-template-columns:1fr}
  .live-grid{grid-template-columns:1fr}
  .topic-grid{grid-template-columns:1fr}
}