/* ===== 钟俊秋 AIGC 作品集 · 深邃黑 + 科技蓝 + 金色 ===== */
:root{
  --bg:#0A0E27; --bg2:#0d1230; --ink:#0a0c1f;
  --gold:#D4AF37; --gold-soft:#e8c969; --blue:#00D9FF;
  --txt:#F5F6FA; --txt-dim:#8B92B0; --line:rgba(212,175,55,.18);
  --card:rgba(255,255,255,.04);
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%;background:var(--bg);color:var(--txt);
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",-apple-system,sans-serif;
  -webkit-font-smoothing:antialiased;overflow:hidden}
a{color:inherit;text-decoration:none;cursor:pointer}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}

/* 视图切换 */
.landing,.module{position:fixed;inset:0;opacity:0;visibility:hidden;
  transition:opacity .6s ease,visibility .6s;overflow-y:auto}
.landing.active,.module.active{opacity:1;visibility:visible}

/* ===== 落地页 ===== */
.landing-bg{position:absolute;inset:0;z-index:0;
  background:radial-gradient(ellipse at 30% 20%,#1a2050 0%,var(--bg) 55%),
             radial-gradient(ellipse at 80% 90%,#16234a 0%,transparent 50%)}
.landing-grain{position:absolute;inset:0;z-index:1;opacity:.5;pointer-events:none;
  background-image:radial-gradient(circle at 50% 50%,rgba(0,217,255,.04) 1px,transparent 1px);
  background-size:28px 28px}
.top-nav{position:relative;z-index:5;display:flex;justify-content:space-between;
  align-items:center;padding:32px 6vw}
.brand{font-size:22px;font-weight:700;letter-spacing:2px;display:flex;flex-direction:column}
.brand-en{font-size:10px;color:var(--gold);letter-spacing:4px;margin-top:2px;font-weight:400}
.nav-links{display:flex;gap:36px}
.nav-links a{font-size:14px;color:var(--txt-dim);letter-spacing:1px;transition:color .3s;position:relative}
.nav-links a:hover{color:var(--gold)}
.nav-links a::after{content:'';position:absolute;left:0;bottom:-6px;width:0;height:1px;
  background:var(--gold);transition:width .3s}
.nav-links a:hover::after{width:100%}

.hero{position:relative;z-index:5;text-align:center;padding:7vh 6vw 0;
  display:flex;flex-direction:column;align-items:center}
.hero-tag{font-size:13px;letter-spacing:6px;color:var(--gold);margin-bottom:24px;
  padding:8px 20px;border:1px solid var(--line);border-radius:30px}
.hero-title{font-size:clamp(56px,9vw,120px);font-weight:800;letter-spacing:8px;
  line-height:1.05;background:linear-gradient(120deg,#fff 30%,var(--gold-soft) 70%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-sub{font-size:clamp(15px,2vw,20px);color:var(--txt);margin-top:20px;letter-spacing:2px}
.hero-desc{font-size:13px;color:var(--txt-dim);margin-top:14px;letter-spacing:1px}

.stats{display:flex;align-items:center;gap:clamp(20px,4vw,56px);margin:48px 0 56px}
.stat{display:flex;flex-direction:column;align-items:center}
.stat-num{font-size:clamp(26px,4vw,42px);font-weight:700;color:var(--gold);letter-spacing:1px}
.stat-label{font-size:12px;color:var(--txt-dim);margin-top:8px;letter-spacing:2px}
.stat-divider{width:1px;height:42px;background:var(--line)}

.entries{display:flex;gap:28px;flex-wrap:wrap;justify-content:center;width:100%;max-width:760px}
.entry-card{flex:1;min-width:280px;background:var(--card);border:1px solid var(--line);
  border-radius:18px;padding:36px 32px;text-align:left;cursor:pointer;position:relative;
  overflow:hidden;transition:transform .4s,border-color .4s,box-shadow .4s;backdrop-filter:blur(8px)}
.entry-card::before{content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(212,175,55,.12),transparent 60%);opacity:0;transition:opacity .4s}
.entry-card:hover{transform:translateY(-6px);border-color:var(--gold);
  box-shadow:0 20px 50px -20px rgba(212,175,55,.4)}
.entry-card:hover::before{opacity:1}
.entry-icon{font-size:30px;color:var(--gold);margin-bottom:18px}
.entry-title{font-size:20px;font-weight:600;letter-spacing:1px}
.entry-desc{font-size:13px;color:var(--txt-dim);margin-top:10px}
.entry-arrow{position:absolute;right:28px;bottom:28px;font-size:22px;color:var(--gold);
  transition:transform .4s}
.entry-card:hover .entry-arrow{transform:translateX(8px)}
.landing-foot{position:relative;z-index:5;text-align:center;padding:40px 0 32px;
  font-size:12px;color:var(--txt-dim);letter-spacing:2px}

/* ===== 模块通用顶栏 ===== */
.module{background:var(--bg)}
.module-bar{position:sticky;top:0;z-index:20;display:flex;align-items:center;
  gap:24px;padding:20px 5vw;background:rgba(10,14,39,.85);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);flex-wrap:wrap}
.back-btn{font-size:14px;color:var(--txt-dim);letter-spacing:1px;transition:color .3s}
.back-btn:hover{color:var(--gold)}
.module-name{font-size:14px;letter-spacing:3px;color:var(--gold);font-weight:600}
.page-indicator{margin-left:auto;font-size:14px;color:var(--txt-dim);letter-spacing:1px}
.page-indicator span{color:var(--gold)}

/* ===== 简介 PPT 翻页 ===== */
.intro{display:flex;flex-direction:column}
.introSwiper{flex:1;width:100%;height:calc(100vh - 130px)}
.introSwiper .swiper-slide{display:flex;align-items:center;justify-content:center;
  padding:24px 5vw}
.introSwiper .swiper-slide img{max-width:100%;max-height:100%;object-fit:contain;
  border-radius:10px;box-shadow:0 30px 80px -30px rgba(0,0,0,.8),0 0 0 1px var(--line)}
.introSwiper .swiper-button-prev,.introSwiper .swiper-button-next{color:var(--gold);
  transition:opacity .3s}
.introSwiper .swiper-button-prev:after,.introSwiper .swiper-button-next:after{font-size:28px}
.page-progress{height:2px;background:rgba(255,255,255,.06)}
.page-progress-bar{height:100%;width:0;background:linear-gradient(90deg,var(--gold),var(--gold-soft));
  transition:width .4s}
.intro-hint{text-align:center;padding:14px 0;font-size:12px;color:var(--txt-dim);letter-spacing:2px}

/* ===== 作品集视频网格 ===== */
.filters{display:flex;gap:10px;flex-wrap:wrap;width:100%;margin-top:4px}
.filter{font-size:13px;color:var(--txt-dim);padding:7px 18px;border:1px solid var(--line);
  border-radius:24px;letter-spacing:1px;transition:all .3s}
.filter:hover{color:var(--gold);border-color:var(--gold)}
.filter.active{background:var(--gold);color:var(--ink);border-color:var(--gold);font-weight:600}
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
  gap:24px;padding:36px 5vw 80px}
.vcard{background:var(--card);border:1px solid var(--line);border-radius:14px;
  overflow:hidden;cursor:pointer;transition:transform .4s,box-shadow .4s,border-color .4s}
.vcard:hover{transform:translateY(-6px);border-color:var(--gold);
  box-shadow:0 24px 50px -24px rgba(0,0,0,.7)}
.vthumb{position:relative;aspect-ratio:16/9;background:#06091c;overflow:hidden}
.vthumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.vcard:hover .vthumb img{transform:scale(1.06)}
.vplay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:rgba(10,14,39,.25);opacity:0;transition:opacity .3s}
.vcard:hover .vplay{opacity:1}
.vplay span{width:58px;height:58px;border-radius:50%;background:rgba(212,175,55,.92);
  color:var(--ink);display:flex;align-items:center;justify-content:center;font-size:20px;padding-left:4px}
.vbadge{position:absolute;top:12px;left:12px;font-size:11px;letter-spacing:1px;
  padding:4px 12px;background:rgba(10,14,39,.7);border:1px solid var(--line);
  border-radius:20px;color:var(--gold);backdrop-filter:blur(4px)}
.vmeta{padding:18px 20px}
.vmeta h4{font-size:16px;font-weight:600;letter-spacing:.5px}
.vmeta p{font-size:12px;color:var(--txt-dim);margin-top:8px;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.grid-empty{text-align:center;padding:120px 20px;color:var(--txt-dim);letter-spacing:1px}

/* ===== 播放弹层 ===== */
.player-overlay{position:fixed;inset:0;z-index:100;background:rgba(4,6,18,.95);
  backdrop-filter:blur(8px);display:none;align-items:center;justify-content:center;padding:4vw}
.player-overlay.show{display:flex}
.player-close{position:absolute;top:24px;right:32px;font-size:26px;color:var(--txt-dim);
  z-index:101;transition:color .3s}
.player-close:hover{color:var(--gold)}
.player-box{width:min(1000px,92vw)}
.player-box .video-js{width:100%;aspect-ratio:16/9;border-radius:12px;overflow:hidden}
.player-meta{margin-top:20px;text-align:center}
.player-meta h3{font-size:20px;color:var(--gold);letter-spacing:1px}
.player-meta p{font-size:13px;color:var(--txt-dim);margin-top:10px;line-height:1.7;max-width:680px;margin-inline:auto}

/* ===== 响应式 ===== */
@media(max-width:680px){
  .top-nav{padding:22px 5vw}.nav-links{gap:18px}.nav-links a{font-size:13px}
  .hero{padding-top:4vh}.stats{gap:18px;margin:32px 0 40px}
  .stat-num{font-size:24px}.entries{flex-direction:column;gap:16px}
  .entry-card{min-width:0;padding:28px 24px}
  .module-bar{gap:14px;padding:16px 5vw}.page-indicator{margin-left:auto}
  .introSwiper{height:calc(100vh - 150px)}
  .video-grid{grid-template-columns:1fr;gap:18px;padding:24px 5vw 60px}
  .introSwiper .swiper-button-prev,.introSwiper .swiper-button-next{display:none}
}