/* ============================================================
   趣玩游戏库 GameBox — detail.css
   游戏详情页 · 深色科技风 · 玻璃拟态 · 响应式
   ============================================================ */

:root{
  --bg:#0f1115;
  --bg-2:#0b0d11;
  --card:#181c24;
  --card-2:#1d2330;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --txt:#e6e9f0;
  --txt-2:#9aa3b2;
  --txt-3:#6b7384;
  --blue:#4f8cff;
  --blue-2:#2f6bff;
  --purple:#a855f7;
  --gold:#e0a040;
  --grad:linear-gradient(135deg,#4f8cff 0%,#7c5cff 50%,#a855f7 100%);
  --grad-blue:linear-gradient(135deg,#4f8cff,#2f6bff);
  --grad-gold:linear-gradient(135deg,#ffd24a,#ff8a3a);
  --grad-vip:linear-gradient(135deg,#a855f7,#ff506e);
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --shadow-lg:0 24px 60px rgba(0,0,0,.55);
  --glass:rgba(24,28,36,.72);
  --blur:saturate(160%) blur(14px);
  --ease:cubic-bezier(.22,.61,.36,1);
  --maxw:1240px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"Microsoft YaHei","PingFang SC","Segoe UI",system-ui,sans-serif;
  background:var(--bg);color:var(--txt);line-height:1.6;overflow-x:hidden;min-height:100vh;
}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ===== 通用按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 22px;border-radius:30px;font-size:15px;font-weight:600;
  transition:transform .25s var(--ease),box-shadow .25s,opacity .2s,background .25s;
  white-space:nowrap;user-select:none;
}
.btn:active{transform:translateY(1px) scale(.98)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(79,140,255,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(79,140,255,.5)}
.btn-ghost{background:rgba(255,255,255,.06);color:var(--txt);border:1px solid var(--line-strong);backdrop-filter:var(--blur)}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-lg{padding:14px 30px;font-size:16px}
.btn-xl{width:100%;padding:16px;font-size:17px;margin-top:18px;border-radius:14px}
.btn-login{padding:9px 22px;background:rgba(255,255,255,.06);border:1px solid var(--line-strong);color:var(--txt)}
.btn-login:hover{background:var(--grad);border-color:transparent}
.btn-vip{background:var(--grad-vip);color:#fff;box-shadow:0 8px 24px rgba(168,85,247,.35);margin-top:16px}
.btn-vip:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(168,85,247,.5)}

.dl-icon{font-size:18px;line-height:1}
.fav-icon{font-size:16px;transition:.2s}
.fav-active .fav-icon,.fav-btn.active .fav-icon{color:#ff506e;transform:scale(1.15)}

/* ===== 导航栏 ===== */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(15,17,21,.65);backdrop-filter:var(--blur);
  border-bottom:1px solid transparent;transition:background .3s,border-color .3s,box-shadow .3s;
}
.navbar.scrolled{background:rgba(11,13,17,.9);border-color:var(--line);box-shadow:0 6px 24px rgba(0,0,0,.4)}
.nav-inner{display:flex;align-items:center;height:68px;gap:24px}
.logo{display:flex;align-items:center;gap:9px;font-size:20px;font-weight:800;letter-spacing:.5px;flex-shrink:0}
.logo-icon{font-size:22px;filter:drop-shadow(0 0 8px rgba(79,140,255,.6))}
.logo-text{color:#fff}
.logo-accent{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

.nav-menu{flex:1;display:flex;justify-content:center}
.nav-menu ul{display:flex;gap:6px}
.nav-link{position:relative;display:block;padding:9px 16px;border-radius:10px;color:var(--txt-2);font-size:15px;font-weight:500;transition:color .25s,background .25s}
.nav-link:hover{color:var(--txt);background:rgba(255,255,255,.05)}
.nav-link.active{color:#fff}
.nav-link.active::after{content:"";position:absolute;left:16px;right:16px;bottom:3px;height:2px;border-radius:2px;background:var(--grad)}

.nav-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.search-box{display:flex;align-items:center;gap:6px;background:rgba(255,255,255,.06);border:1px solid var(--line);border-radius:30px;padding:5px 6px 5px 16px;transition:border-color .25s,background .25s}
.search-box:focus-within{border-color:var(--blue);background:rgba(79,140,255,.08)}
.search-box input{background:none;border:none;outline:none;color:var(--txt);width:170px;font-size:14px}
.search-box input::placeholder{color:var(--txt-3)}
.search-btn{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;color:var(--txt-2);transition:.2s}
.search-btn:hover{background:var(--grad);color:#fff}

.nav-toggle{display:none;flex-direction:column;gap:5px;padding:8px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--txt);border-radius:2px;transition:.3s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== 面包屑 ===== */
.breadcrumb-bar{padding-top:68px;background:var(--bg-2);border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;align-items:center;gap:8px;padding:14px 0;font-size:13px;color:var(--txt-3);flex-wrap:wrap}
.breadcrumb a{color:var(--txt-2);transition:.2s}
.breadcrumb a:hover{color:var(--blue)}
.breadcrumb .sep{color:var(--txt-3);opacity:.6}
.breadcrumb .cur{color:var(--txt);font-weight:600}

/* ===== 通用区块 ===== */
.section{padding:78px 0}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:34px}
.section-title{font-size:28px;font-weight:800;letter-spacing:.5px;position:relative;padding-left:16px;display:inline-block}
.section-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:3px;background:var(--grad)}
.section-sub{color:var(--txt-3);font-size:14px;margin-top:8px;padding-left:16px}

/* ===== Hero ===== */
.hero{position:relative;min-height:540px;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.06);animation:slowzoom 20s ease-in-out infinite alternate}
@keyframes slowzoom{to{transform:scale(1.16)}}
.hero-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,17,21,.92) 0%,rgba(15,17,21,.65) 45%,rgba(15,17,21,.35) 100%),linear-gradient(0deg,rgba(15,17,21,1) 2%,transparent 60%)}
.hero-inner{position:relative;z-index:2;display:flex;gap:42px;padding:48px 24px;align-items:center}

.hero-cover{position:relative;flex-shrink:0;width:260px;border-radius:18px;overflow:hidden;box-shadow:var(--shadow-lg);animation:fadeup .8s var(--ease) both}
.hero-cover img{width:100%;display:block;aspect-ratio:3/4;object-fit:cover}
.cover-fav{
  position:absolute;top:12px;right:12px;width:40px;height:40px;border-radius:50%;
  background:rgba(0,0,0,.5);backdrop-filter:blur(8px);color:#fff;font-size:18px;
  display:grid;place-items:center;transition:.25s;
}
.cover-fav:hover{background:rgba(255,80,110,.9);transform:scale(1.1)}
.cover-fav.active{background:rgba(255,80,110,.85);color:#ff506e}
.cover-fav.active .fav-icon{color:#fff}

.hero-info{flex:1;min-width:0;animation:fadeup .8s .1s var(--ease) both}
.hero-tags-top{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.badge-edition{padding:5px 14px;border-radius:20px;font-size:12px;font-weight:700;background:var(--grad-gold);color:#1a1230}
.badge-hot{padding:5px 14px;border-radius:20px;font-size:12px;font-weight:700;background:rgba(255,80,110,.18);border:1px solid rgba(255,80,110,.4);color:#ff8aa0}
.hero-title{font-size:clamp(34px,5vw,52px);font-weight:900;line-height:1.1;letter-spacing:1px;margin-bottom:4px;background:linear-gradient(120deg,#fff 30%,#ffd9a0 80%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-en{color:var(--txt-3);font-size:15px;letter-spacing:1.5px;margin-bottom:18px}

.hero-rating{display:flex;align-items:center;gap:10px;margin-bottom:22px;flex-wrap:wrap}
.hero-rating .stars{color:var(--gold);font-size:20px;letter-spacing:2px}
.rating-num{font-size:24px;font-weight:800;color:#fff}
.rating-count{font-size:13px;color:var(--txt-3)}

.hero-meta{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:22px}
.hero-meta li{display:flex;flex-direction:column;gap:4px;padding:12px 16px;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:12px;backdrop-filter:var(--blur)}
.hero-meta .meta-k{font-size:12px;color:var(--txt-3)}
.hero-meta .meta-v{font-size:15px;font-weight:700;color:#fff}

.hero-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
.tag{font-size:12px;padding:5px 12px;border-radius:20px;color:var(--txt-2);background:rgba(79,140,255,.1);border:1px solid rgba(79,140,255,.25)}

.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-actions .fav-btn.active{background:rgba(255,80,110,.18);border-color:rgba(255,80,110,.45);color:#ff8aa0}

@keyframes fadeup{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}

/* ===== 游戏简介 ===== */
.intro-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:36px;align-items:start}
.intro-text .section-title{margin-bottom:18px}
.intro-text p{color:var(--txt-2);font-size:15px;line-height:1.9;margin-bottom:14px}

.info-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;position:sticky;top:90px}
.info-card-title{font-size:17px;font-weight:700;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:8px}
.info-card-title::before{content:"📋";font-size:18px}
.info-list{display:grid;gap:14px}
.info-list li{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:14px}
.info-list span{color:var(--txt-3)}
.info-list b{color:var(--txt);font-weight:600;text-align:right}

/* ===== 游戏特色 ===== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{
  position:relative;padding:30px 24px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;transition:transform .35s var(--ease),border-color .35s,box-shadow .35s;
}
.feature-card::before{content:"";position:absolute;inset:0;opacity:0;transition:opacity .35s;background:radial-gradient(circle at 0% 0%,rgba(79,140,255,.16),transparent 60%)}
.feature-card:hover{transform:translateY(-8px);border-color:rgba(79,140,255,.4);box-shadow:var(--shadow-lg)}
.feature-card:hover::before{opacity:1}
.feature-ico{
  width:62px;height:62px;border-radius:16px;display:grid;place-items:center;margin-bottom:18px;color:#fff;
  background:linear-gradient(135deg,var(--c1),var(--c2));box-shadow:0 10px 24px rgba(0,0,0,.3);position:relative;z-index:1;
}
.feature-card h3{font-size:19px;font-weight:700;margin-bottom:10px;position:relative;z-index:1}
.feature-card p{color:var(--txt-2);font-size:14px;line-height:1.8;position:relative;z-index:1}

/* ===== 截图瀑布 ===== */
.shot-grid{column-count:3;column-gap:18px}
.shot-item{
  position:relative;break-inside:avoid;margin-bottom:18px;border-radius:14px;overflow:hidden;
  cursor:pointer;border:1px solid var(--line);background:#0b0d11;
  transition:transform .35s var(--ease),box-shadow .35s,border-color .35s;
}
.shot-item img{width:100%;height:auto;display:block;transition:transform .5s var(--ease)}
.shot-item::after{content:"🔍";position:absolute;right:14px;bottom:14px;width:38px;height:38px;border-radius:50%;background:rgba(0,0,0,.55);backdrop-filter:blur(6px);display:grid;place-items:center;font-size:15px;opacity:0;transform:translateY(6px);transition:.3s}
.shot-item:hover{transform:translateY(-5px);border-color:rgba(79,140,255,.5);box-shadow:var(--shadow-lg)}
.shot-item:hover img{transform:scale(1.06)}
.shot-item:hover::after{opacity:1;transform:none}

/* ===== 配置要求 ===== */
.req-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.req-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;position:relative;overflow:hidden}
.req-rec{border-color:rgba(79,140,255,.35)}
.req-rec::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad)}
.req-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.req-badge{padding:6px 16px;border-radius:20px;font-size:13px;font-weight:700}
.req-min .req-badge{background:rgba(255,255,255,.08);color:var(--txt-2)}
.req-rec .req-badge{background:var(--grad);color:#fff}
.req-note{font-size:12px;color:var(--txt-3)}
.req-list{display:grid;gap:14px}
.req-list li{display:grid;grid-template-columns:70px 1fr;gap:14px;align-items:center;font-size:14px}
.req-k{color:var(--txt-3);font-size:13px}
.req-v{color:var(--txt);font-weight:500}

/* ===== 下载区域 ===== */
.dl-card{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;background:var(--card);border:1px solid var(--line);border-radius:22px;overflow:hidden}
.dl-main{padding:30px}
.dl-row{display:flex;justify-content:space-between;align-items:center;padding:14px 0;border-bottom:1px dashed var(--line);font-size:14px}
.dl-row:last-of-type{border-bottom:none}
.dl-k{color:var(--txt-3)}
.dl-v{color:var(--txt);font-weight:600}
.dl-mono{font-family:"Consolas","SF Mono",monospace;font-size:13px;color:var(--blue)}

.dl-vip{position:relative;padding:30px;background:linear-gradient(135deg,#1a1230 0%,#101a3a 60%,#0f1722 100%);overflow:hidden}
.vip-glow{position:absolute;top:-30%;right:-20%;width:80%;height:160%;background:radial-gradient(circle,rgba(168,85,247,.4),transparent 60%);pointer-events:none}
.vip-flag{display:inline-block;padding:5px 14px;border-radius:20px;font-size:12px;font-weight:700;background:var(--grad-vip);color:#fff;margin-bottom:14px;position:relative;z-index:1}
.dl-vip h3{font-size:20px;font-weight:700;margin-bottom:10px;position:relative;z-index:1}
.dl-vip p{color:var(--txt-2);font-size:13px;margin-bottom:18px;position:relative;z-index:1}
.dl-vip ul{display:grid;gap:10px;margin-bottom:6px;position:relative;z-index:1}
.dl-vip li{font-size:13px;color:var(--txt)}
.dl-vip .btn{position:relative;z-index:1}

/* ===== 玩家评价 ===== */
.comment-summary{display:grid;grid-template-columns:1fr 1.4fr;gap:36px;padding:28px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:30px;align-items:center}
.cs-score{display:flex;flex-direction:column;align-items:center;gap:8px;padding-right:20px;border-right:1px solid var(--line)}
.cs-score b{font-size:54px;font-weight:900;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.cs-score .stars{color:var(--gold);font-size:20px;letter-spacing:2px}
.cs-count{font-size:12px;color:var(--txt-3)}
.cs-bars{display:grid;gap:8px}
.bar-row{display:grid;grid-template-columns:46px 1fr 42px;align-items:center;gap:12px;font-size:12px;color:var(--txt-3)}
.bar{height:8px;border-radius:5px;background:rgba(255,255,255,.08);overflow:hidden}
.bar i{display:block;height:100%;border-radius:5px;background:var(--grad-gold)}
.bar-row b{text-align:right;color:var(--txt-2);font-weight:600}

.comment-list{display:grid;gap:16px}
.comment-item{display:flex;gap:14px;padding:20px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);transition:border-color .3s}
.comment-item:hover{border-color:var(--line-strong)}
.comment-avatar{width:48px;height:48px;border-radius:50%;flex-shrink:0;overflow:hidden;background:#0b0d11}
.comment-avatar img{width:100%;height:100%;object-fit:cover}
.comment-body{flex:1;min-width:0}
.comment-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.comment-user{font-size:15px;font-weight:700;color:var(--txt)}
.comment-user .badge-vip{display:inline-block;margin-left:8px;padding:2px 8px;font-size:10px;font-weight:700;border-radius:10px;background:var(--grad-vip);color:#fff;vertical-align:middle}
.comment-stars{color:var(--gold);font-size:13px;letter-spacing:1px}
.comment-text{color:var(--txt-2);font-size:14px;line-height:1.8}
.comment-meta{display:flex;gap:14px;margin-top:10px;font-size:12px;color:var(--txt-3)}
.comment-meta .like{cursor:pointer;transition:.2s;user-select:none}
.comment-meta .like:hover{color:#ff506e}
.comment-meta .like.active{color:#ff506e}
.comment-item.collapsed{max-height:160px;overflow:hidden;position:relative}
.comment-item.collapsed::after{content:"";position:absolute;left:0;right:0;bottom:0;height:60px;background:linear-gradient(0deg,var(--card),transparent);pointer-events:none}

.comment-more{margin:24px auto 0;display:flex;justify-content:center}
.comment-more .btn{transition:.25s}
.comment-more .btn:hover{transform:translateY(-2px)}

.comment-form{margin-top:30px;padding:24px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius)}
.comment-form h3{font-size:17px;font-weight:700;margin-bottom:16px}
.form-rating{display:flex;align-items:center;gap:12px;margin-bottom:14px;font-size:14px;color:var(--txt-2)}
.star-input{display:flex;gap:4px;font-size:22px;color:var(--txt-3)}
.star-input span{cursor:pointer;transition:.2s}
.star-input span.on{color:var(--gold);transform:scale(1.1)}
#starLabel{font-weight:700;color:var(--gold)}
#commentText{width:100%;padding:14px;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:12px;color:var(--txt);font-size:14px;font-family:inherit;resize:vertical;transition:border-color .25s}
#commentText:focus{outline:none;border-color:var(--blue);background:rgba(79,140,255,.06)}
#commentText::placeholder{color:var(--txt-3)}

/* ===== 猜你喜欢 ===== */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.rel-card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;cursor:pointer;transition:transform .35s var(--ease),box-shadow .35s,border-color .35s;
  animation:fadeup .6s var(--ease) both;
}
.rel-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:rgba(79,140,255,.45)}
.rel-cover{position:relative;aspect-ratio:3/4;overflow:hidden;background:#0b0d11}
.rel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.rel-card:hover .rel-cover img{transform:scale(1.1)}
.rel-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(0,0,0,.7) 100%)}
.rel-body{padding:14px 16px 16px}
.rel-name{font-size:15px;font-weight:700;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rel-tags{display:flex;gap:6px;margin-bottom:10px;flex-wrap:wrap}
.rel-foot{display:flex;justify-content:space-between;font-size:12px;color:var(--txt-3)}
.rel-foot b{color:var(--txt-2);font-weight:600}

/* ===== Footer ===== */
.footer{background:var(--bg-2);border-top:1px solid var(--line);padding-top:54px}
.footer-inner{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:36px}
.footer-brand .logo{margin-bottom:14px}
.footer-desc{color:var(--txt-3);font-size:13px;max-width:280px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:#fff}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:var(--txt-3);font-size:13px;transition:.2s}
.footer-col a:hover{color:var(--blue)}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0;text-align:center}
.footer-bottom p{font-size:12px;color:var(--txt-3)}

/* ===== 灯箱 ===== */
.lightbox{position:fixed;inset:0;z-index:300;display:none;align-items:center;justify-content:center;padding:40px}
.lightbox.open{display:flex}
.lightbox-backdrop{position:absolute;inset:0;background:rgba(5,7,11,.92);backdrop-filter:blur(8px);animation:fade .3s}
.lightbox-img{position:relative;max-width:90vw;max-height:82vh;border-radius:12px;box-shadow:var(--shadow-lg);animation:lbz .4s var(--ease);object-fit:contain}
@keyframes lbz{from{opacity:0;transform:scale(.95)}to{opacity:1;transform:none}}
@keyframes fade{from{opacity:0}to{opacity:1}}
.lb-close{position:absolute;top:24px;right:30px;z-index:5;width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.1);color:#fff;font-size:20px;backdrop-filter:blur(6px);transition:.2s}
.lb-close:hover{background:rgba(255,80,110,.9);transform:rotate(90deg)}
.lb-nav{position:absolute;z-index:5;top:50%;transform:translateY(-50%);width:54px;height:54px;border-radius:50%;background:rgba(255,255,255,.1);color:#fff;font-size:30px;backdrop-filter:blur(6px);transition:.2s;display:grid;place-items:center}
.lb-nav:hover{background:var(--grad)}
.lb-prev{left:30px}
.lb-next{right:30px}
.lb-counter{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);padding:6px 16px;border-radius:20px;background:rgba(0,0,0,.5);color:#fff;font-size:13px;backdrop-filter:blur(6px)}

/* ===== Toast ===== */
.toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(20px);padding:12px 26px;border-radius:30px;font-size:14px;font-weight:600;color:#fff;background:rgba(24,28,36,.95);border:1px solid var(--line-strong);box-shadow:var(--shadow);backdrop-filter:blur(10px);opacity:0;pointer-events:none;transition:.35s var(--ease);z-index:400}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== 回到顶部 ===== */
.back-top{position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;font-size:20px;font-weight:700;box-shadow:0 10px 26px rgba(79,140,255,.4);opacity:0;pointer-events:none;transition:.3s var(--ease);z-index:90;display:grid;place-items:center}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{transform:translateY(-4px)}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1440px){
  .hero-meta{grid-template-columns:repeat(2,1fr)}
  .info-card{position:static}
}
@media (max-width:1080px){
  .intro-grid{grid-template-columns:1fr}
  .info-card{position:static}
  .feature-grid{grid-template-columns:repeat(3,1fr)}
  .shot-grid{column-count:3}
  .related-grid{grid-template-columns:repeat(4,1fr)}
  .dl-card{grid-template-columns:1fr 1fr}
  .search-box input{width:120px}
}
@media (max-width:900px){
  .nav-toggle{display:flex}
  .nav-menu{position:fixed;top:68px;left:0;right:0;flex-direction:column;background:rgba(11,13,17,.97);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);padding:14px 24px 22px;transform:translateY(-130%);transition:transform .35s var(--ease);max-height:calc(100vh - 68px);overflow:auto}
  .nav-menu.open{transform:translateY(0)}
  .nav-menu ul{flex-direction:column;gap:4px}
  .nav-link{padding:13px 16px;font-size:16px}
  .nav-link.active::after{display:none}
  .nav-link.active{background:rgba(79,140,255,.15)}
  .nav-actions{margin-left:auto}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .shot-grid{column-count:2}
  .dl-card{grid-template-columns:1fr}
  .related-grid{grid-template-columns:repeat(3,1fr)}
  .comment-summary{grid-template-columns:1fr;gap:24px}
  .cs-score{border-right:none;border-bottom:1px solid var(--line);padding-right:0;padding-bottom:20px}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .section-title{font-size:23px}
  .hero{min-height:auto;padding-bottom:40px}
  .hero-inner{flex-direction:column;gap:24px;padding:32px 16px;align-items:flex-start}
  .hero-cover{width:160px;align-self:center}
  .hero-meta{grid-template-columns:repeat(2,1fr);gap:10px}
  .hero-meta li{padding:10px 12px}
  .hero-actions{width:100%}
  .hero-actions .btn{flex:1}
  .feature-grid{grid-template-columns:1fr}
  .shot-grid{column-count:1}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .req-grid{grid-template-columns:1fr}
  .comment-item{flex-direction:column;gap:12px}
  .comment-avatar{width:40px;height:40px}
  .footer-inner{grid-template-columns:1fr;gap:24px}
  .lb-nav{width:42px;height:42px;font-size:24px}
  .lb-prev{left:12px}
  .lb-next{right:12px}
  .lb-close{top:14px;right:16px}
}
@media (max-width:420px){
  .related-grid{grid-template-columns:1fr}
  .hero-tags-top{flex-direction:column;align-items:flex-start;gap:8px}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}