*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#050508;
  --surface:rgba(255,255,255,0.03);
  --surface-hover:rgba(255,255,255,0.06);
  --glass-border:rgba(255,255,255,0.08);
  --glass-border-strong:rgba(255,255,255,0.15);
  --accent:#8b5cf6;
  --accent-bright:#a78bfa;
  --accent-glow:rgba(139,92,246,0.4);
  --hot:#ec4899;
  --hot-glow:rgba(236,72,153,0.35);
  --cyan:#06b6d4;
  --success:#10b981;
  --text:#f8fafc;
  --text-secondary:#94a3b8;
  --text-muted:#64748b;
  --radius:16px;
  --radius-sm:12px;
  --shadow-glow:0 0 40px rgba(139,92,246,0.15),0 0 80px rgba(236,72,153,0.08);
  --transition:cubic-bezier(0.16,1,0.3,1)
}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}

body{
  font-family:'Inter','Noto Sans SC',system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  line-height:1.6
}

/* ===== 动态极光背景 ===== */
.aurora-bg{
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  overflow:hidden
}
.aurora-bg::before{
  content:'';
  position:absolute;
  top:-50%;
  left:-50%;
  width:200%;
  height:200%;
  background:
    radial-gradient(circle at 20% 80%,rgba(139,92,246,.25) 0%,transparent 50%),
    radial-gradient(circle at 80% 20%,rgba(236,72,153,.18) 0%,transparent 50%),
    radial-gradient(circle at 50% 50%,rgba(6,182,212,.08) 0%,transparent 60%);
  animation:auroraRotate 20s linear infinite
}
.aurora-bg::after{
  content:'';position:absolute;inset:0;
  background:url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  opacity:.4;
  pointer-events:none
}
@keyframes auroraRotate{
  0%{transform:rotate(0deg) scale(1)}
  50%{transform:rotate(180deg) scale(1.1)}
  100%{transform:rotate(360deg) scale(1)}
}

/* ===== 网格光晕装饰 ===== */
.glow-orb{
  position:fixed;
  border-radius:50%;
  filter:blur(80px);
  pointer-events:none;
  z-index:0;
  opacity:.5
}
.glow-orb.purple{
  width:500px;height:500px;
  background:radial-gradient(circle,rgba(139,92,246,.3),transparent 70%);
  top:-10%;left:-10%;
  animation:float 8s ease-in-out infinite
}
.glow-orb.pink{
  width:400px;height:400px;
  background:radial-gradient(circle,rgba(236,72,153,.25),transparent 70%);
  bottom:-5%;right:-5%;
  animation:float 10s ease-in-out infinite reverse
}
@keyframes float{
  0%,100%{transform:translate(0,0)}
  50%{transform:translate(30px,-30px)}
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.2)}

/* ===== 页面布局（主内容 + 侧栏） ===== */
.page-layout{
  position:relative;
  z-index:1;
  max-width:880px;
  margin:0 auto;
  padding:0 24px
}
.main-content{width:100%}

/* 大屏侧栏固定右侧 */
@media (min-width: 1240px){
  .page-layout{
    display:flex;
    gap:28px;
    max-width:1220px;
    align-items:flex-start
  }
  .main-content{flex:1;max-width:880px}
  .sidebar-global{
    width:300px;
    flex-shrink:0;
    position:sticky;
    top:24px;
    max-height:calc(100vh - 48px);
    overflow-y:auto;
    padding-right:4px
  }
}
/* 小屏侧栏变底部区块 */
@media (max-width: 1239px){
  .sidebar-global{
    margin-top:56px;
    max-width:880px;
    margin-left:auto;
    margin-right:auto
  }
}

/* ===== 导航 ===== */
nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:28px 0;
  animation:fadeDown .8s var(--transition) both
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  text-decoration:none
}
.brand-mark{
  width:40px;height:40px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--accent),var(--hot));
  display:grid;place-items:center;
  box-shadow:0 0 20px var(--accent-glow);
  position:relative;overflow:hidden
}
.brand-mark::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,transparent 40%,rgba(255,255,255,.2) 50%,transparent 60%);
  animation:shine 3s infinite
}
@keyframes shine{
  0%{transform:translateX(-100%)}
  100%{transform:translateX(100%)}
}
.brand-mark svg{width:20px;height:20px;fill:#fff;position:relative;z-index:1}
.brand-text{
  font-weight:700;font-size:1.25rem;
  background:linear-gradient(135deg,#fff,var(--accent-bright));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  letter-spacing:-.02em
}
.nav-badge{
  font-size:.72rem;color:var(--text-muted);
  border:1px solid var(--glass-border);
  background:var(--surface);
  padding:6px 14px;border-radius:20px;
  backdrop-filter:blur(10px);
  font-family:'DM Mono',monospace
}

/* ===== 导航栏菜单 ===== */
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none
}
.nav-menu::-webkit-scrollbar{display:none}
.nav-link{
  font-size:.82rem;
  color:var(--text-muted);
  text-decoration:none;
  padding:6px 12px;
  border-radius:8px;
  transition:all .25s;
  white-space:nowrap;
  font-weight:500
}
.nav-link:hover{
  color:var(--text);
  background:var(--surface)
}
.nav-link.active{
  color:var(--text);
  background:var(--surface);
  border:1px solid var(--glass-border-strong)
}

/* 小屏隐藏栏目链接，保留品牌与 badge */
@media(max-width:720px){
  .nav-link{display:none}
}


/* ===== 面包屑导航 ===== */
.breadcrumb{
  padding:12px 0 4px;
  font-size:.78rem;
  color:var(--text-muted);
  animation:fadeDown .6s var(--transition) both
}
.breadcrumb ol{
  display:flex;
  align-items:center;
  gap:8px;
  list-style:none;
  flex-wrap:wrap
}
.breadcrumb li{
  display:flex;
  align-items:center;
  gap:8px
}
.breadcrumb li:not(:last-child)::after{
  content:'';
  width:5px;height:5px;
  border-top:1.5px solid var(--text-muted);
  border-right:1.5px solid var(--text-muted);
  transform:rotate(45deg);
  opacity:.5;
  display:inline-block
}
.breadcrumb a{
  color:var(--text-muted);
  text-decoration:none;
  transition:color .25s
}
.breadcrumb a:hover{
  color:var(--accent-bright)
}
.breadcrumb li[aria-current="page"]{
  color:var(--text-secondary);
  font-weight:500
}

/* ===== Hero ===== */
.hero{
  text-align:center;
  padding:60px 0 40px;
  animation:fadeUp .9s var(--transition) .1s both
}
.hero-h1{
  margin:0 0 0.6rem 0;
  font-size:0.95rem;
  font-weight:500;
  color:var(--text-muted);
  letter-spacing:0.02em;
  line-height:1.5
}
.hero h2{
  font-size:clamp(2.4rem,6vw,3.8rem);
  font-weight:700;
  line-height:1.1;
  letter-spacing:-.03em;
  margin-bottom:16px
}
.hero h2 .gradient-text{
  background:linear-gradient(135deg,var(--accent-bright),var(--hot),var(--cyan));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-size:200% 200%;
  animation:gradientMove 6s ease infinite
}
@keyframes gradientMove{
  0%,100%{background-position:0% 50%}
  50%{background-position:100% 50%}
}
.hero p{
  font-size:1.05rem;
  color:var(--text-secondary);
  max-width:480px;
  margin:0 auto;
  font-weight:300;
  line-height:1.7
}

/* ===== 平台标签 ===== */
.platforms{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:10px;
  margin:32px 0 36px;
  animation:fadeUp .9s var(--transition) .25s both
}
.platform-tag{
  display:flex;
  align-items:center;
  gap:8px;
  padding:8px 16px;
  border-radius:100px;
  background:var(--surface);
  border:1px solid var(--glass-border);
  font-size:.8rem;
  color:var(--text-muted);
  transition:all .35s var(--transition);
  cursor:default;
  backdrop-filter:blur(10px)
}
.platform-tag:hover{
  border-color:var(--glass-border-strong);
  color:var(--text);
  transform:translateY(-2px);
  box-shadow:var(--shadow-glow);
  background:var(--surface-hover)
}
.platform-tag svg{width:14px;height:14px}

/* ===== 输入区（玻璃拟态） ===== */
.input-glass{
  background:linear-gradient(135deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  border:1px solid var(--glass-border);
  border-radius:var(--radius);
  padding:6px;
  display:flex;
  gap:8px;
  box-shadow:0 8px 32px rgba(0,0,0,.3),inset 0 1px 0 rgba(255,255,255,.05);
  transition:all .4s var(--transition);
  animation:fadeUp .9s var(--transition) .4s both;
  backdrop-filter:blur(20px);
  position:relative
}
.input-glass::before{
  content:'';position:absolute;inset:-1px;border-radius:calc(var(--radius) + 1px);
  padding:1px;background:linear-gradient(135deg,rgba(139,92,246,.3),rgba(236,72,153,.2),transparent 60%);
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  pointer-events:none;opacity:0;transition:opacity .4s
}
.input-glass:focus-within::before{opacity:1}
.input-glass:focus-within{
  border-color:rgba(139,92,246,.3);
  box-shadow:0 0 0 4px rgba(139,92,246,.08),0 8px 32px rgba(0,0,0,.3)
}
.input-wrap{flex:1;position:relative}
.input-glass input{
  width:100%;background:transparent;border:none;outline:none;
  padding:16px 44px 16px 20px;
  font-size:.9rem;color:var(--text);caret-color:var(--accent-bright)
}
.input-glass input::placeholder{color:var(--text-muted);font-weight:300}
.clear-btn{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;
  color:var(--text-muted);cursor:pointer;
  transition:all .2s;background:transparent;border:none;
  font-size:.85rem
}
.clear-btn:hover{color:var(--text);background:rgba(255,255,255,.08)}
.clear-btn.hidden{display:none}

.btn-primary{
  padding:14px 28px;border:none;border-radius:var(--radius-sm);
  cursor:pointer;font-weight:600;font-size:.88rem;
  color:#fff;background:linear-gradient(135deg,var(--accent),var(--hot));
  transition:all .3s var(--transition);
  white-space:nowrap;position:relative;overflow:hidden;
  letter-spacing:.02em
}
.btn-primary::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,transparent 40%,rgba(255,255,255,.25) 50%,transparent 60%);
  transform:translateX(-100%);
  transition:none
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 30px var(--accent-glow),0 4px 12px var(--hot-glow)
}
.btn-primary:hover::after{
  transform:translateX(100%);
  transition:transform .6s
}
.btn-primary:active{transform:scale(.97)}
.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}
.btn-primary .spinner{
  display:none;width:18px;height:18px;
  border:2.5px solid rgba(255,255,255,.3);
  border-top-color:#fff;border-radius:50%;
  animation:spin .7s linear infinite
}
.btn-primary.loading .btn-text{display:none}
.btn-primary.loading .spinner{display:inline-block}

/* ===== 历史记录 ===== */
.history-section{
  margin-top:18px;
  animation:fadeUp .7s var(--transition) both
}
.history-section.hidden{display:none}
.history-label{
  font-size:.7rem;color:var(--text-muted);
  margin-bottom:10px;text-transform:uppercase;
  letter-spacing:.08em;font-weight:500
}
.history-chips{
  display:flex;flex-wrap:wrap;gap:8px
}
.history-chip{
  display:flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:100px;
  background:var(--surface);
  border:1px solid var(--glass-border);
  font-size:.78rem;color:var(--text-muted);
  cursor:pointer;transition:all .3s;
  max-width:240px;backdrop-filter:blur(10px)
}
.history-chip:hover{
  border-color:rgba(139,92,246,.3);
  color:var(--text);
  box-shadow:0 0 20px rgba(139,92,246,.1)
}
.history-chip .h-text{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.history-chip .h-del{
  width:16px;height:16px;display:grid;place-items:center;
  border-radius:50%;flex-shrink:0;
  transition:all .2s;font-size:.7rem
}
.history-chip .h-del:hover{background:rgba(239,68,68,.15);color:#f87171}

/* ===== 错误提示 ===== */
.alert-error{
  margin-top:20px;padding:14px 18px;
  background:rgba(239,68,68,.06);
  border:1px solid rgba(239,68,68,.15);
  border-radius:var(--radius-sm);
  color:#fca5a5;font-size:.85rem;
  display:none;animation:fadeUp .35s var(--transition) both;
  align-items:center;gap:10px;
  backdrop-filter:blur(10px)
}
.alert-error.show{display:flex}
.alert-error svg{width:18px;height:18px;fill:#f87171;flex-shrink:0}

/* ===== 结果卡片 ===== */
.result-section{
  margin-top:36px;display:none;
  animation:fadeUp .6s var(--transition) both
}
.result-section.show{display:block}
.glass-card{
  background:linear-gradient(135deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--glass-border);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:0 20px 60px rgba(0,0,0,.4),var(--shadow-glow);
  backdrop-filter:blur(20px)
}
.result-layout{display:flex;gap:0}
.result-visual{
  width:320px;min-height:200px;
  flex-shrink:0;position:relative;overflow:hidden;
  background:var(--surface)
}
.result-visual img{
  width:100%;height:100%;object-fit:cover;display:block;
  transition:transform .6s var(--transition)
}
.glass-card:hover .result-visual img{transform:scale(1.03)}
.result-visual .duration{
  position:absolute;bottom:12px;right:12px;
  font-family:'DM Mono',monospace;font-size:.72rem;
  background:rgba(0,0,0,.7);backdrop-filter:blur(8px);
  padding:4px 10px;border-radius:6px;color:#fff;
  border:1px solid rgba(255,255,255,.1)
}
.result-detail{
  padding:28px;flex:1;display:flex;
  flex-direction:column;justify-content:center;gap:12px
}
.result-detail h2{
  font-size:1.15rem;font-weight:600;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  letter-spacing:-.01em
}
.result-meta-row{
  display:flex;gap:18px;flex-wrap:wrap;
  font-size:.8rem;color:var(--text-muted)
}
.result-meta-row span{display:flex;align-items:center;gap:6px}
.result-meta-row svg{width:14px;height:14px;color:var(--text-muted)}
.result-actions-row{display:flex;gap:10px;margin-top:4px}
.result-actions-row button{
  padding:7px 16px;border-radius:8px;
  border:1px solid var(--glass-border);
  background:rgba(255,255,255,.04);
  color:var(--text-muted);font-size:.78rem;
  cursor:pointer;transition:all .25s;
  font-family:inherit;font-weight:500
}
.result-actions-row button:hover{
  border-color:var(--glass-border-strong);
  color:var(--text);background:rgba(255,255,255,.08)
}

/* ===== 格式列表 ===== */
.format-list{
  padding:20px 24px 24px;
  display:flex;flex-direction:column;gap:10px
}
.format-item{
  padding:16px 18px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.03);
  border:1px solid transparent;
  cursor:pointer;display:flex;
  align-items:center;justify-content:space-between;
  transition:all .35s var(--transition);
  position:relative;overflow:hidden
}
.format-item::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(139,92,246,.08),transparent);
  transform:translateX(-100%);
  transition:none
}
.format-item:hover::before{
  transform:translateX(100%);
  transition:transform .8s
}
.format-item:hover{
  background:rgba(255,255,255,.05);
  border-color:var(--glass-border-strong);
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(0,0,0,.2)
}
.format-item.downloading{opacity:.6;cursor:wait;transform:none}
.format-info{display:flex;flex-direction:column;gap:4px}
.format-name{
  font-weight:600;font-size:.88rem;
  display:flex;align-items:center;gap:8px
}
.format-badge{
  font-size:.65rem;padding:3px 10px;border-radius:100px;
  font-weight:500;letter-spacing:.02em
}
.badge-hd{background:rgba(139,92,246,.12);color:var(--accent-bright);border:1px solid rgba(139,92,246,.2)}
.badge-rec{background:rgba(16,185,129,.12);color:#34d399;border:1px solid rgba(16,185,129,.2)}
.badge-audio{background:rgba(236,72,153,.12);color:#f472b6;border:1px solid rgba(236,72,153,.2)}
.format-size{font-size:.75rem;color:var(--text-muted);font-family:'DM Mono',monospace}
.format-dl{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,var(--accent),var(--hot));
  display:grid;place-items:center;flex-shrink:0;
  transition:all .3s var(--transition);
  box-shadow:0 4px 12px rgba(139,92,246,.25)
}
.format-item:hover .format-dl{transform:scale(1.1) rotate(-5deg)}
.format-dl svg{width:16px;height:16px;fill:#fff}

/* ===== 特性卡片 ===== */
.features{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:18px;margin:64px 0 48px;
  animation:fadeUp .9s var(--transition) .6s both
}
.feature-card{
  background:linear-gradient(135deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  border:1px solid var(--glass-border);
  border-radius:var(--radius);
  padding:32px 24px;
  transition:all .4s var(--transition);
  backdrop-filter:blur(10px);
  position:relative;overflow:hidden
}
.feature-card::after{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent-bright),transparent);
  opacity:0;transition:opacity .4s
}
.feature-card:hover::after{opacity:.5}
.feature-card:hover{
  border-color:var(--glass-border-strong);
  transform:translateY(-6px);
  box-shadow:0 20px 40px rgba(0,0,0,.3),var(--shadow-glow)
}
.feature-icon{
  width:44px;height:44px;border-radius:12px;
  display:grid;place-items:center;margin-bottom:18px;
  position:relative
}
.feature-icon::after{
  content:'';position:absolute;inset:0;border-radius:12px;
  background:inherit;filter:blur(12px);opacity:.5;z-index:-1
}
.feature-card h3{font-size:.95rem;font-weight:600;margin-bottom:8px;letter-spacing:-.01em}
.feature-card p{font-size:.82rem;color:var(--text-muted);line-height:1.65;font-weight:300}

/* ===== 页脚 ===== */
footer{
  text-align:center;padding:40px 0 56px;
  font-size:.78rem;color:var(--text-muted);
  border-top:1px solid var(--glass-border);
  position:relative
}
footer::before{
  content:'';position:absolute;top:-1px;left:50%;transform:translateX(-50%);
  width:120px;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent-bright),transparent)
}

/* ===== 全站侧栏 ===== */
.sidebar-global{
  animation:fadeUp .9s var(--transition) .7s both
}
.sidebar-header{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
  padding-bottom:14px;
  border-bottom:1px solid var(--glass-border);
  position:relative
}
.sidebar-header::after{
  content:'';position:absolute;bottom:-1px;left:0;width:60px;height:1px;
  background:linear-gradient(90deg,var(--accent-bright),transparent)
}
.sidebar-header h3{
  font-size:.95rem;
  font-weight:600;
  letter-spacing:-.01em
}
.live-dot{
  width:8px;height:8px;
  border-radius:50%;
  background:var(--success);
  box-shadow:0 0 8px var(--success);
  animation:pulse 2s infinite
}
@keyframes pulse{
  0%,100%{opacity:1}
  50%{opacity:.4}
}
.gh-list{
  display:flex;
  flex-direction:column;
  gap:10px
}
.gh-item{
  display:flex;
  gap:12px;
  padding:10px;
  border-radius:var(--radius-sm);
  background:linear-gradient(135deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  border:1px solid var(--glass-border);
  cursor:pointer;
  transition:all .3s var(--transition);
  backdrop-filter:blur(10px);
  text-decoration:none;
  color:inherit
}
.gh-item:hover{
  border-color:var(--glass-border-strong);
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(0,0,0,.2)
}
.gh-thumb{
  width:72px;height:54px;
  border-radius:8px;
  object-fit:cover;
  flex-shrink:0;
  background:var(--surface)
}
.gh-info{
  flex:1;
  min-width:0;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:4px
}
.gh-title{
  font-size:.8rem;
  font-weight:500;
  color:var(--text);
  overflow:hidden;
  text-overflow:ellipsis;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  line-height:1.4
}
.gh-meta{
  font-size:.7rem;
  color:var(--text-muted);
  display:flex;
  gap:6px;
  align-items:center
}
.gh-meta .gh-time{
  font-family:'DM Mono',monospace;
  font-size:.65rem
}
.gh-empty{
  color:var(--text-muted);
  font-size:.82rem;
  text-align:center;
  padding:24px 0
}
.gh-loading{
  color:var(--text-muted);
  font-size:.82rem;
  text-align:center;
  padding:20px 0
}

/* ===== 下载确认面板 ===== */
.modal-overlay{
  display:none;position:fixed;inset:0;z-index:10000;
  align-items:center;justify-content:center;
  padding:20px
}
.modal-overlay.show{display:flex}
.modal-backdrop{
  position:absolute;inset:0;
  background:rgba(5,5,8,.85);
  backdrop-filter:blur(16px);
  cursor:pointer
}
.modal-card{
  position:relative;width:100%;max-width:520px;
  background:linear-gradient(135deg,rgba(255,255,255,.08),rgba(255,255,255,.03));
  border:1px solid var(--glass-border-strong);
  border-radius:var(--radius);
  box-shadow:0 32px 80px rgba(0,0,0,.5),var(--shadow-glow);
  animation:modalIn .4s var(--transition) both;
  backdrop-filter:blur(30px);
  overflow:hidden
}
.modal-card::before{
  content:'';position:absolute;inset:0;border-radius:var(--radius);
  padding:1px;background:linear-gradient(135deg,rgba(139,92,246,.4),rgba(236,72,153,.3),rgba(6,182,212,.2));
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  pointer-events:none;opacity:.6
}
@keyframes modalIn{
  from{opacity:0;transform:scale(.95) translateY(10px)}
  to{opacity:1;transform:scale(1) translateY(0)}
}
.modal-header{
  display:flex;justify-content:space-between;align-items:center;
  padding:20px 24px;border-bottom:1px solid var(--glass-border)
}
.modal-header h3{font-size:1.05rem;font-weight:600;letter-spacing:-.01em}
.modal-close{
  width:32px;height:32px;border-radius:8px;
  border:none;background:rgba(255,255,255,.05);
  color:var(--text-muted);font-size:1.1rem;
  cursor:pointer;display:grid;place-items:center;
  transition:all .2s
}
.modal-close:hover{background:rgba(255,255,255,.1);color:var(--text)}
.modal-body{padding:24px}
.modal-preview{
  width:100%;height:220px;border-radius:var(--radius-sm);
  overflow:hidden;background:var(--surface);
  margin-bottom:20px;position:relative;
  border:1px solid var(--glass-border)
}
.modal-preview img{
  width:100%;height:100%;object-fit:cover;display:block
}
.modal-preview .play-icon{
  position:absolute;inset:0;display:grid;place-items:center;
  background:rgba(0,0,0,.3);pointer-events:none
}
.modal-preview .play-icon svg{
  width:48px;height:48px;fill:#fff;opacity:.9;
  filter:drop-shadow(0 4px 12px rgba(0,0,0,.4))
}
.modal-video-wrap{
  width:100%;height:220px;border-radius:var(--radius-sm);
  overflow:hidden;background:#000;
  margin-bottom:20px;
  border:1px solid var(--glass-border);
  display:none;
  position:relative
}
.modal-video-wrap video{
  width:100%;height:100%;object-fit:contain;display:block
}
.modal-video-wrap .video-fallback{
  position:absolute;inset:0;display:none;align-items:center;justify-content:center;
  color:var(--text-muted);font-size:.85rem;background:var(--surface)
}
.modal-info{margin-bottom:20px}
.modal-info .m-title{
  font-size:1.05rem;font-weight:600;line-height:1.4;
  margin-bottom:10px;display:-webkit-box;
  -webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.modal-meta{
  display:flex;gap:10px;flex-wrap:wrap
}
.modal-meta span{
  font-size:.75rem;color:var(--text-muted);
  background:var(--surface);padding:5px 12px;
  border-radius:6px;border:1px solid var(--glass-border);
  font-family:'DM Mono',monospace
}
.modal-actions{display:flex;gap:10px;flex-wrap:wrap}
.modal-actions .btn-main{
  flex:1;min-width:120px;padding:12px 18px;
  border-radius:var(--radius-sm);border:none;
  background:linear-gradient(135deg,var(--accent),var(--hot));
  color:#fff;font-weight:600;font-size:.85rem;
  cursor:pointer;transition:all .3s;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  text-decoration:none
}
.modal-actions .btn-main:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 24px var(--accent-glow)
}
.modal-actions .btn-main svg{fill:currentColor}
.modal-actions .btn-sec{
  flex:1;min-width:120px;padding:12px 18px;
  border-radius:var(--radius-sm);
  border:1px solid var(--glass-border);
  background:rgba(255,255,255,.05);
  color:var(--text);font-size:.85rem;
  cursor:pointer;transition:all .2s;
  font-weight:500
}
.modal-actions .btn-sec:hover{
  border-color:var(--glass-border-strong);
  background:rgba(255,255,255,.1)
}
.modal-hint{
  margin-top:16px;font-size:.75rem;color:var(--text-muted);
  line-height:1.6;padding:12px 14px;
  background:rgba(139,92,246,.06);
  border-radius:var(--radius-sm);
  border:1px solid rgba(139,92,246,.1)
}
.modal-hint strong{color:var(--accent-bright)}

/* ===== 动画 ===== */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(30px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes fadeDown{
  from{opacity:0;transform:translateY(-20px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== 响应式 ===== */
@media(max-width:720px){
  .result-layout{flex-direction:column}
  .result-visual{width:100%;min-height:220px}
  .features{grid-template-columns:1fr}
  .input-glass{flex-direction:column;gap:8px}
  .btn-primary{width:100%;margin:0}
  .modal-actions{flex-direction:column}
  .modal-actions .btn-main,.modal-actions .btn-sec{width:100%}
  .hero{padding:40px 0 30px}
  .hero h2{font-size:2rem}
  nav{padding:20px 0}
}
@media(max-width:480px){
  .history-chip{max-width:160px}
  .result-detail{padding:20px}
  .format-list{padding:16px 20px 20px}
  .gh-thumb{width:60px;height:45px}
}