/* ===== 主题变量 ===== */
:root{
  --cyan:#39c5bb;
  --cyan-dark:#2a9d96;
  --cyan-soft:#e6f7f5;
  --pink:#ff66cc;
  --pink-soft:#fff0f9;
  --purple:#8a6cff;
  --ink:#1a2230;
  --ink-2:#3a4658;
  --muted:#8a93a6;
  --line:#e7ebf2;
  --bg:#f5f7fb;
  --card:#ffffff;
  --shadow:0 6px 24px rgba(40,60,90,.08);
  --shadow-hover:0 12px 36px rgba(40,60,90,.16);
  --radius:16px;
  --radius-sm:10px;
  --header-h:66px;
}
[data-theme="dark"]{
  --ink:#e8edf5;
  --ink-2:#c4cdde;
  --muted:#8b95ad;
  --line:#2a3344;
  --bg:#0e1219;
  --card:#161c27;
  --cyan-soft:#13262a;
  --pink-soft:#241526;
  --shadow:0 6px 24px rgba(0,0,0,.4);
  --shadow-hover:0 12px 36px rgba(0,0,0,.55);
}

/* ===== Reset ===== */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.6;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  transition:background .3s,color .3s;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
input{font-family:inherit}

.container{max-width:1240px;margin:0 auto;padding:0 20px}
.app-main{min-height:60vh;padding:24px 20px 80px}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.85);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
[data-theme="dark"] .site-header{background:rgba(18,23,32,.85)}
.header-inner{display:flex;align-items:center;gap:24px;height:var(--header-h)}
.logo{display:flex;align-items:center;gap:8px;font-weight:900;font-size:20px}
.logo-mark{
  display:inline-grid;place-items:center;
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--cyan),var(--pink));
  color:#fff;font-size:18px;box-shadow:0 4px 12px rgba(57,197,187,.4)
}
.logo-text{background:linear-gradient(135deg,var(--cyan),var(--pink));-webkit-background-clip:text;background-clip:text;color:transparent}
.main-nav{display:flex;gap:4px;margin-right:auto;margin-left:8px}
.main-nav a{
  padding:8px 14px;border-radius:10px;font-weight:500;color:var(--ink-2);
  transition:.2s;position:relative
}
.main-nav a:hover{color:var(--cyan);background:var(--cyan-soft)}
.main-nav a.active{color:var(--cyan);background:var(--cyan-soft);font-weight:700}
.header-right{display:flex;align-items:center;gap:12px}
.search-box{display:flex;align-items:center;gap:6px;background:var(--card);border:1px solid var(--line);border-radius:24px;padding:6px 8px 6px 14px;box-shadow:var(--shadow)}
.search-box input{border:none;background:none;outline:none;width:180px;color:var(--ink);font-size:14px}
.search-box button{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--cyan);color:#fff;font-size:13px}
.user-chip{display:flex;align-items:center;gap:8px;padding:5px 12px 5px 5px;border-radius:24px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow)}
.user-chip img{width:30px;height:30px;border-radius:50%;object-fit:cover}
.user-chip span{font-size:14px;font-weight:500}
.theme-toggle,.menu-toggle{width:38px;height:38px;border-radius:12px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);font-size:16px}
.menu-toggle{display:none}

/* ===== 通用 ===== */
.section{margin-top:48px}
.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.section-title{font-size:22px;font-weight:900;display:flex;align-items:center;gap:10px}
.section-title::before{content:"";width:5px;height:22px;border-radius:3px;background:linear-gradient(var(--cyan),var(--pink))}
.section-more{color:var(--cyan);font-size:14px;font-weight:500}
.section-more:hover{text-decoration:underline}

.tag{
  display:inline-block;padding:3px 10px;border-radius:20px;font-size:12px;
  background:var(--cyan-soft);color:var(--cyan-dark);font-weight:500
}
.tag.pink{background:var(--pink-soft);color:var(--pink)}
.btn{
  display:inline-flex;align-items:center;gap:6px;padding:9px 18px;border-radius:24px;
  font-weight:600;font-size:14px;transition:.2s;border:1px solid transparent
}
.btn-primary{background:linear-gradient(135deg,var(--cyan),var(--cyan-dark));color:#fff;box-shadow:0 6px 16px rgba(57,197,187,.4)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{background:var(--card);border-color:var(--line);color:var(--ink-2)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-pink{background:linear-gradient(135deg,var(--pink),#d94aa8);color:#fff;box-shadow:0 6px 16px rgba(255,102,204,.4)}

/* ===== Hero ===== */
.hero{
  position:relative;border-radius:24px;overflow:hidden;
  min-height:340px;display:flex;align-items:flex-end;
  box-shadow:var(--shadow);margin-top:24px
}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(10,15,25,.75) 0%,rgba(10,15,25,.35) 50%,rgba(57,197,187,.25) 100%)}
.hero-content{position:relative;z-index:2;padding:40px 36px;color:#fff;max-width:640px}
.hero-badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:20px;background:rgba(255,255,255,.18);backdrop-filter:blur(6px);font-size:12px;font-weight:600;margin-bottom:14px}
.hero-title{font-size:40px;font-weight:900;line-height:1.15;margin-bottom:12px;text-shadow:0 2px 20px rgba(0,0,0,.3)}
.hero-title .grad{background:linear-gradient(135deg,#7ff5ec,var(--pink));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-desc{font-size:15px;opacity:.92;margin-bottom:22px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ===== 快捷分类卡 ===== */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:24px}
.cat-card{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  padding:22px 12px;border-radius:var(--radius);background:var(--card);
  box-shadow:var(--shadow);transition:.25s;cursor:pointer;text-align:center
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.cat-icon{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;font-size:22px;color:#fff;background:linear-gradient(135deg,var(--cyan),var(--pink))}
.cat-name{font-weight:700;font-size:15px}
.cat-count{font-size:12px;color:var(--muted)}

/* ===== 作品卡片网格 ===== */
.work-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.work-card{
  background:var(--card);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);transition:.25s;cursor:pointer;display:flex;flex-direction:column
}
.work-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.work-cover{position:relative;aspect-ratio:1/1;overflow:hidden;background:var(--cyan-soft)}
.work-cover img{width:100%;height:100%;object-fit:cover;transition:.4s}
.work-card:hover .work-cover img{transform:scale(1.06)}
.work-type{position:absolute;top:10px;left:10px;font-size:11px;padding:3px 8px;border-radius:6px;background:rgba(0,0,0,.55);color:#fff;backdrop-filter:blur(4px)}
.work-body{padding:12px 14px 14px;flex:1;display:flex;flex-direction:column;gap:8px}
.work-title{font-weight:700;font-size:15px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.work-author{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted)}
.work-author img{width:20px;height:20px;border-radius:50%;object-fit:cover}
.work-stats{display:flex;gap:14px;font-size:12px;color:var(--muted);margin-top:auto}
.work-stats span{display:flex;align-items:center;gap:3px}

/* 横向滚动行 */
.scroll-row{display:flex;gap:16px;overflow-x:auto;padding-bottom:8px;scroll-snap-type:x mandatory}
.scroll-row::-webkit-scrollbar{height:6px}
.scroll-row::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}
.scroll-row .work-card{flex:0 0 240px;scroll-snap-align:start}
.scroll-row .work-card .work-cover{aspect-ratio:3/4}

/* ===== 筛选条 ===== */
.filter-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.chip{
  padding:7px 16px;border-radius:20px;background:var(--card);border:1px solid var(--line);
  font-size:13px;font-weight:500;color:var(--ink-2);transition:.2s
}
.chip:hover{border-color:var(--cyan);color:var(--cyan)}
.chip.active{background:linear-gradient(135deg,var(--cyan),var(--cyan-dark));color:#fff;border-color:transparent;box-shadow:0 4px 12px rgba(57,197,187,.35)}

/* ===== 音乐列表 ===== */
.music-wrap{display:grid;grid-template-columns:300px 1fr;gap:28px;align-items:start}
.music-feature{position:sticky;top:calc(var(--header-h) + 20px)}
.music-feature-cover{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);aspect-ratio:1/1}
.music-feature-cover img{width:100%;height:100%;object-fit:cover}
.music-feature-info{padding:16px 4px}
.music-feature-title{font-size:20px;font-weight:900}
.music-feature-artist{color:var(--muted);margin:4px 0 14px}
.music-list{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.music-row{display:grid;grid-template-columns:40px 50px 1fr auto auto;align-items:center;gap:14px;padding:12px 18px;border-bottom:1px solid var(--line);transition:.2s;cursor:pointer}
.music-row:last-child{border-bottom:none}
.music-row:hover{background:var(--cyan-soft)}
.music-row.playing{background:var(--cyan-soft);color:var(--cyan-dark)}
.music-rank{font-weight:700;color:var(--muted);text-align:center}
.music-row:nth-child(-n+3) .music-rank{color:var(--pink);font-size:16px}
.music-cover{width:50px;height:50px;border-radius:10px;object-fit:cover}
.music-meta .m-title{font-weight:600}
.music-meta .m-artist{font-size:12px;color:var(--muted)}
.music-dur,.music-plays{font-size:13px;color:var(--muted)}
.music-plays{text-align:right;min-width:70px}

/* ===== 文章 ===== */
.article-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.article-card{
  display:flex;gap:16px;background:var(--card);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);transition:.25s;cursor:pointer
}
.article-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.article-cover{flex:0 0 200px;overflow:hidden}
.article-cover img{width:100%;height:100%;object-fit:cover}
.article-body{padding:16px 16px 16px 4px;display:flex;flex-direction:column;gap:8px}
.article-title{font-size:17px;font-weight:700;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-excerpt{font-size:13px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.article-meta{font-size:12px;color:var(--muted);display:flex;gap:10px;align-items:center}
.article-meta img{width:18px;height:18px;border-radius:50%}

/* ===== 排行榜 ===== */
.rank-tabs{display:flex;gap:8px;margin-bottom:20px}
.rank-list{display:flex;flex-direction:column;gap:12px}
.rank-item{
  display:grid;grid-template-columns:46px 90px 1fr auto;align-items:center;gap:16px;
  background:var(--card);border-radius:var(--radius);padding:10px 18px;box-shadow:var(--shadow);
  transition:.2s;cursor:pointer
}
.rank-item:hover{box-shadow:var(--shadow-hover);transform:translateX(4px)}
.rank-num{font-size:24px;font-weight:900;color:var(--muted);text-align:center}
.rank-item:nth-child(1) .rank-num{color:#ff4d4d}
.rank-item:nth-child(2) .rank-num{color:#ff9c40}
.rank-item:nth-child(3) .rank-num{color:#ffd23f}
.rank-cover{width:90px;height:90px;border-radius:12px;object-fit:cover}
.rank-meta .r-title{font-weight:700;font-size:16px;margin-bottom:4px}
.rank-meta .r-author{font-size:12px;color:var(--muted);margin-bottom:6px}
.rank-meta .r-tags{display:flex;gap:6px;flex-wrap:wrap}
.rank-score{text-align:right;font-size:13px;color:var(--muted)}
.rank-score b{display:block;font-size:18px;color:var(--pink);font-weight:900}

/* ===== 作品详情 ===== */
.detail-back{display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-weight:600;margin-bottom:16px}
.detail-wrap{display:grid;grid-template-columns:1fr 320px;gap:28px;align-items:start}
.detail-main{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.detail-image{width:100%;max-height:560px;object-fit:contain;background:#0c0c0c}
.detail-info{padding:18px 22px}
.detail-title{font-size:24px;font-weight:900}
.detail-author{display:flex;align-items:center;gap:10px;margin:10px 0}
.detail-author img{width:36px;height:36px;border-radius:50%}
.detail-tags{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}
.detail-desc{color:var(--ink-2);font-size:14px;margin-top:10px;line-height:1.8}
.detail-actions{display:flex;gap:12px;padding:16px 22px;border-top:1px solid var(--line)}
.detail-actions .btn{flex:1;justify-content:center}
.detail-actions .btn.active{box-shadow:0 0 0 3px rgba(57,197,187,.3)}

.detail-side .card-box{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin-bottom:20px}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;text-align:center}
.stat-grid .num{font-size:20px;font-weight:900;color:var(--cyan-dark)}
.stat-grid .lbl{font-size:12px;color:var(--muted)}
.author-card{display:flex;align-items:center;gap:12px}
.author-card img{width:50px;height:50px;border-radius:50%}
.author-card .a-name{font-weight:700}
.author-card .a-bio{font-size:12px;color:var(--muted)}

/* 评论 */
.comments{padding:22px}
.comment-input{display:flex;gap:12px;margin-bottom:24px}
.comment-input img{width:38px;height:38px;border-radius:50%;flex:0 0 38px}
.comment-input textarea{flex:1;border:1px solid var(--line);border-radius:12px;padding:10px 14px;resize:vertical;min-height:54px;color:var(--ink);background:var(--bg);outline:none;font-size:14px}
.comment-input textarea:focus{border-color:var(--cyan)}
.comment-item{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}
.comment-item:last-child{border-bottom:none}
.comment-item img{width:38px;height:38px;border-radius:50%;flex:0 0 38px}
.comment-head{display:flex;justify-content:space-between;font-size:13px;margin-bottom:4px}
.comment-head .c-name{font-weight:700;color:var(--ink)}
.comment-head .c-time{color:var(--muted);font-size:12px}
.comment-body{font-size:14px;color:var(--ink-2)}

/* ===== 个人中心 ===== */
.profile-header{
  background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:30px;display:flex;align-items:center;gap:24px;flex-wrap:wrap;
  position:relative;overflow:hidden;margin-top:24px
}
.profile-header::before{content:"";position:absolute;top:0;left:0;right:0;height:90px;background:linear-gradient(135deg,var(--cyan),var(--pink));opacity:.15}
.profile-avatar{width:96px;height:96px;border-radius:50%;object-fit:cover;border:4px solid var(--card);box-shadow:var(--shadow);position:relative;z-index:2}
.profile-info{position:relative;z-index:2}
.profile-name{font-size:24px;font-weight:900}
.profile-bio{color:var(--muted);margin:4px 0 10px}
.profile-stats{display:flex;gap:24px}
.profile-stats b{font-size:18px;font-weight:900}
.profile-stats span{font-size:12px;color:var(--muted)}
.profile-tabs{display:flex;gap:8px;margin:24px 0}

.empty-state{text-align:center;padding:60px 20px;color:var(--muted)}
.empty-state .emoji{font-size:48px;display:block;margin-bottom:12px}

/* ===== 播放器 ===== */
.player-bar{
  position:fixed;left:50%;bottom:18px;transform:translateX(-50%);
  z-index:200;display:flex;align-items:center;gap:14px;
  background:rgba(22,28,39,.92);backdrop-filter:blur(16px);
  color:#fff;padding:10px 16px;border-radius:24px;box-shadow:0 12px 40px rgba(0,0,0,.4);
  width:min(720px,calc(100% - 40px))
}
.player-bar img{width:42px;height:42px;border-radius:8px;object-fit:cover}
.player-btn{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--cyan),var(--pink));color:#fff;font-size:14px;display:grid;place-items:center;flex:0 0 38px}
.player-info{display:flex;align-items:center;gap:10px;flex:0 0 auto;min-width:0}
.player-meta{min-width:0}
.player-title{font-weight:600;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:160px}
.player-artist{font-size:11px;opacity:.7}
.player-progress{flex:1;height:5px;background:rgba(255,255,255,.2);border-radius:3px;overflow:hidden;cursor:pointer}
.player-progress-fill{height:100%;background:linear-gradient(90deg,var(--cyan),var(--pink));width:0%;transition:width .25s linear}
.player-time{font-size:11px;opacity:.8;font-variant-numeric:tabular-nums}

/* ===== 回到顶部 ===== */
.back-top{
  position:fixed;right:24px;bottom:24px;z-index:150;width:44px;height:44px;border-radius:50%;
  background:linear-gradient(135deg,var(--cyan),var(--pink));color:#fff;font-size:20px;
  box-shadow:0 8px 24px rgba(57,197,187,.5);opacity:0;pointer-events:none;transition:.3s
}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{transform:translateY(-3px)}

/* ===== Toast ===== */
.toast{
  position:fixed;left:50%;top:80px;transform:translateX(-50%) translateY(-20px);
  background:var(--ink);color:var(--bg);padding:10px 20px;border-radius:24px;
  font-size:14px;font-weight:500;z-index:300;opacity:0;pointer-events:none;transition:.3s;
  box-shadow:var(--shadow-hover)
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== 页脚 ===== */
.site-footer{background:var(--card);border-top:1px solid var(--line);margin-top:40px}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;padding:48px 20px 28px}
.footer-desc{font-size:13px;color:var(--muted);margin-top:12px;max-width:320px}
.footer-col h4{font-size:15px;margin-bottom:14px}
.footer-col a{display:block;color:var(--ink-2);font-size:13px;padding:5px 0;transition:.2s}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{display:flex;justify-content:space-between;padding:18px 20px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);flex-wrap:wrap;gap:8px}

/* ===== 响应式 ===== */
@media(max-width:1080px){
  .work-grid{grid-template-columns:repeat(3,1fr)}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .detail-wrap{grid-template-columns:1fr}
  .music-wrap{grid-template-columns:1fr}
  .music-feature{position:static}
}
@media(max-width:760px){
  .main-nav{display:none;position:absolute;top:var(--header-h);left:0;right:0;flex-direction:column;background:var(--card);border-bottom:1px solid var(--line);padding:10px 16px;gap:4px}
  .main-nav.open{display:flex}
  .menu-toggle{display:grid;place-items:center}
  .search-box input{width:120px}
  .user-chip span{display:none}
  .work-grid{grid-template-columns:repeat(2,1fr)}
  .article-grid{grid-template-columns:1fr}
  .article-card{flex-direction:column}
  .article-cover{flex:0 0 auto;width:100%;aspect-ratio:16/9}
  .hero-title{font-size:28px}
  .footer-inner{grid-template-columns:1fr 1fr}
  .profile-header{text-align:center;justify-content:center}
  .player-bar{flex-wrap:wrap}
  .player-progress{order:5;flex-basis:100%}
}
@media(max-width:460px){
  .work-grid{grid-template-columns:1fr}
  .rank-item{grid-template-columns:36px 70px 1fr}
  .rank-cover{width:70px;height:70px}
}

/* ===== Auth 模态框 ===== */
.auth-modal{position:fixed;inset:0;z-index:500;display:flex;align-items:center;justify-content:center}
.auth-mask{position:absolute;inset:0;background:rgba(10,15,25,.55);backdrop-filter:blur(6px)}
.auth-card{
  position:relative;background:var(--card);border-radius:20px;padding:28px 30px;
  width:min(420px,calc(100% - 32px));box-shadow:var(--shadow-hover);
  animation:authIn .2s ease-out
}
@keyframes authIn{from{opacity:0;transform:translateY(12px) scale(.98)}to{opacity:1;transform:none}}
.auth-close{position:absolute;top:12px;right:14px;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;color:var(--muted);font-size:16px}
.auth-close:hover{background:var(--cyan-soft);color:var(--cyan)}
.auth-tabs{display:flex;gap:4px;background:var(--bg);padding:4px;border-radius:12px;margin-bottom:20px}
.auth-tab{flex:1;padding:9px;border-radius:10px;font-weight:600;font-size:14px;color:var(--muted);transition:.2s}
.auth-tab.active{background:var(--card);color:var(--cyan);box-shadow:var(--shadow)}
.auth-form{display:flex;flex-direction:column;gap:14px}
.auth-field{display:flex;flex-direction:column;gap:5px}
.auth-field span{font-size:13px;color:var(--muted);font-weight:500}
.auth-field input{
  border:1px solid var(--line);border-radius:12px;padding:11px 14px;
  font-size:14px;color:var(--ink);background:var(--bg);outline:none;transition:.2s
}
.auth-field input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(57,197,187,.15)}
.auth-submit{width:100%;margin-top:6px}
.auth-error{color:#ff4d4d;font-size:13px;min-height:18px}
.auth-hint{font-size:12px;color:var(--muted);text-align:center;margin-top:4px}
[data-theme="dark"] .auth-card{background:var(--card)}

/* ===== 3D MMD 查看器 ===== */
.mmd-page{padding:8px 0 24px}
.mmd-head{margin-bottom:18px}
.mmd-sub{color:var(--muted);font-size:14px;margin-top:4px;max-width:680px}
.mmd-toolbar{
  display:flex;flex-wrap:wrap;gap:14px;align-items:flex-end;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 18px;margin-bottom:16px;box-shadow:var(--shadow)
}
.mmd-file{display:flex;flex-direction:column;gap:6px;flex:1;min-width:220px}
.mmd-file > span{font-size:13px;color:var(--ink-2);font-weight:500}
.mmd-file input[type=file]{
  font-size:13px;padding:8px 10px;border:1px dashed var(--line);
  border-radius:var(--radius-sm);background:var(--bg);color:var(--ink);cursor:pointer
}
.mmd-file input[type=file]::-webkit-file-upload-button{
  background:var(--cyan);color:#fff;border:none;border-radius:6px;
  padding:5px 10px;margin-right:10px;cursor:pointer;font-size:12px
}
.mmd-btns{display:flex;gap:8px;flex-wrap:wrap}
.mmd-stage{
  position:relative;width:100%;min-height:480px;
  background:#0e1219;border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center
}
.mmd-stage canvas{display:block;max-width:100%}
.mmd-placeholder{
  position:absolute;inset:0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:8px;color:rgba(255,255,255,.6);
  text-align:center;padding:24px;pointer-events:none
}
.mmd-placeholder-icon{font-size:64px;color:var(--cyan);text-shadow:0 0 24px rgba(57,197,187,.5)}
.mmd-placeholder p{font-size:15px}
.mmd-tip{font-size:12px;color:rgba(255,255,255,.4)!important;max-width:420px}
.mmd-loading{
  position:absolute;inset:0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:14px;
  background:rgba(14,18,25,.85);color:#fff;z-index:5
}
.mmd-spinner{
  width:42px;height:42px;border:3px solid rgba(57,197,187,.2);
  border-top-color:var(--cyan);border-radius:50%;animation:mmdSpin .8s linear infinite
}
@keyframes mmdSpin{to{transform:rotate(360deg)}}
.mmd-hint{
  margin-top:18px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:16px 20px;box-shadow:var(--shadow)
}
.mmd-hint h3{font-size:16px;margin-bottom:8px;color:var(--ink)}
.mmd-hint ul{padding-left:18px;color:var(--muted);font-size:13px;line-height:1.9}
.mmd-hint li{list-style:disc}
@media(max-width:600px){
  .mmd-toolbar{flex-direction:column;align-items:stretch}
  .mmd-file{min-width:0}
  .mmd-btns{justify-content:center}
}