/* 转换云 · NCM 转 MP3 —— 全站样式（无外部依赖） */
:root{
  --ink:#0b1220;
  --ink-2:#3c4858;
  --ink-3:#6b7787;
  --line:#e5ece9;
  --line-2:#eef3f1;
  --bg:#f6faf8;
  --card:#ffffff;
  --accent:#0b9c6b;
  --accent-d:#077c55;
  --accent-l:#e7f7f0;
  --grad:linear-gradient(135deg,#0b9c6b 0%,#12aec4 100%);
  --warn:#b4530a;
  --err:#c0392b;
  --ok:#0b8043;
  --r:16px;
  --shadow:0 8px 28px rgba(9,32,24,.06);
  --shadow-2:0 16px 48px rgba(9,32,24,.10);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:15px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;
}
img,svg{vertical-align:middle}
a{color:var(--accent-d);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:980px;margin:0 auto;padding:0 18px}
.read{max-width:760px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line-2)}
.site-header .wrap{display:flex;align-items:center;gap:14px;height:58px}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:15.5px;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand svg{width:26px;height:26px;flex:none}
.brand small{display:block;font-weight:500;font-size:11px;color:var(--ink-3);letter-spacing:.4px}
.nav{margin-left:auto;display:flex;gap:4px;font-size:13.5px;flex-wrap:wrap;justify-content:flex-end}
.nav a{color:var(--ink-2);padding:7px 10px;border-radius:9px}
.nav a:hover{background:var(--accent-l);color:var(--accent-d);text-decoration:none}
.nav a.on{color:var(--accent-d);background:var(--accent-l);font-weight:600}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:34px 0 6px}
.hero:before{content:"";position:absolute;inset:-40% -20% auto -20%;height:420px;
  background:
    radial-gradient(60% 60% at 20% 20%,rgba(11,156,107,.14),transparent 70%),
    radial-gradient(50% 50% at 85% 10%,rgba(18,174,196,.16),transparent 70%);
  pointer-events:none}
.hero .wrap{position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--accent-d);
  background:var(--accent-l);border:1px solid #d2efe3;padding:4px 11px;border-radius:999px;margin-bottom:14px}
h1{font-size:clamp(25px,5.6vw,38px);line-height:1.28;margin:0 0 12px;letter-spacing:-.3px}
h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{color:var(--ink-2);font-size:15.5px;margin:0 0 18px;max-width:640px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 22px;padding:0;list-style:none}
.chips li{font-size:12.5px;color:var(--ink-2);background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:5px 11px;box-shadow:0 1px 2px rgba(9,32,24,.03)}
.chips b{color:var(--accent-d);font-weight:600}

/* ---------- Tool card ---------- */
.tool{background:var(--card);border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--shadow-2);padding:16px;margin-bottom:26px}
.drop{border:2px dashed #c8ddd4;border-radius:14px;background:linear-gradient(180deg,#fbfefc,#f4fbf8);
  padding:30px 16px;text-align:center;cursor:pointer;transition:.18s}
.drop:hover{border-color:var(--accent);background:#f2fbf6}
.drop.over{border-color:var(--accent);background:#e9f8f1;transform:scale(.995)}
.drop .ico{width:46px;height:46px;margin:0 auto 10px;display:grid;place-items:center;
  background:var(--accent-l);border-radius:14px;color:var(--accent-d)}
.drop b{display:block;font-size:16px;margin-bottom:3px}
.drop span{color:var(--ink-3);font-size:12.8px}
.tool-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin-top:13px}
button{font:inherit;border:0;cursor:pointer;border-radius:11px;transition:.15s;min-height:44px}
button:active{transform:translateY(1px)}
.btn-p{background:var(--grad);color:#fff;font-weight:600;box-shadow:0 6px 16px rgba(11,156,107,.22)}
.btn-p:hover{filter:brightness(1.05)}
.btn-s{background:#f1f5f3;color:var(--ink);border:1px solid var(--line)}
.btn-s:hover{background:#e9f1ee}
button[disabled]{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}
.progress{height:5px;background:#eef3f1;border-radius:5px;overflow:hidden;margin-top:14px}
.progress i{display:block;height:100%;width:0;background:var(--grad);transition:width .25s}
.tool-stat{display:flex;justify-content:space-between;align-items:center;gap:10px;
  margin-top:9px;font-size:12.5px;color:var(--ink-3)}
.tool-stat b{color:var(--accent-d);font-weight:600}
#list{margin-top:12px;border-top:1px solid var(--line-2)}
.row{display:flex;align-items:center;gap:12px;padding:11px 2px;border-bottom:1px solid var(--line-2)}
.row:last-child{border-bottom:0}
.row .meta{min-width:0;flex:1}
.row .meta .nm{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13.8px;font-weight:500}
.row .meta .sub{color:var(--ink-3);font-size:11.8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pill{font-size:11.8px;padding:3px 9px;border-radius:999px;background:#f1f5f3;color:var(--ink-3);white-space:nowrap}
.pill.ok{background:#e7f7ee;color:var(--ok)}
.pill.err{background:#fdecea;color:var(--err)}
.pill.run{background:#e8f1fe;color:#1f6feb}
.dl-link{font-size:12.8px;color:var(--accent-d);border:1px solid #cfe9dd;border-radius:9px;
  padding:5px 11px;white-space:nowrap;background:#fff}
.dl-link:hover{background:var(--accent-l);text-decoration:none}
.empty{color:var(--ink-3);font-size:13px;text-align:center;padding:16px 0}

/* ---------- Sections ---------- */
section{padding:6px 0 4px}
h2{font-size:clamp(19px,3.4vw,24px);margin:34px 0 12px;letter-spacing:-.2px}
h3{font-size:16px;margin:22px 0 8px}
p{margin:0 0 12px;color:var(--ink-2)}
ul,ol{color:var(--ink-2);padding-left:22px;margin:0 0 14px}
li{margin:6px 0}
strong{color:var(--ink)}
.grid{display:grid;gap:12px;grid-template-columns:repeat(3,1fr);margin:14px 0 6px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;box-shadow:var(--shadow)}
.card h3{margin:0 0 6px;font-size:15px;display:flex;align-items:center;gap:8px}
.card p{margin:0;font-size:13.5px;color:var(--ink-3)}
.card .n{width:24px;height:24px;border-radius:8px;background:var(--accent-l);color:var(--accent-d);
  display:grid;place-items:center;font-size:12.5px;font-weight:700;flex:none}
table{width:100%;border-collapse:collapse;margin:12px 0 16px;font-size:13.8px;
  background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line-2);overflow-wrap:anywhere;word-break:break-word}
th{background:#f7fbf9;font-weight:600;color:var(--ink);white-space:nowrap}
tr:last-child td{border-bottom:0}
td code,code{background:#f2f7f5;border:1px solid var(--line-2);border-radius:6px;padding:1px 6px;
  font-size:12.6px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:#0a5f45;
  white-space:normal;overflow-wrap:anywhere}
.note{background:#fffdf5;border:1px solid #f2e6c9;border-radius:12px;padding:13px 15px;
  color:#6b5622;font-size:13.5px}
.note b{color:#8a6a12}
details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 15px;margin:9px 0}
details[open]{box-shadow:var(--shadow)}
summary{cursor:pointer;list-style:none;padding:13px 0;font-weight:600;font-size:14.5px;position:relative;padding-right:26px}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";position:absolute;right:2px;top:11px;color:var(--accent);font-weight:400;font-size:19px;line-height:1}
details[open] summary:after{content:"–"}
details .ans{padding:0 0 13px;color:var(--ink-2);font-size:14px}
details .ans p:last-child{margin-bottom:0}
.cta{display:flex;gap:10px;flex-wrap:wrap;margin:6px 0 26px}
.cta a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;
  border-radius:11px;font-weight:600;font-size:14px}
.cta a.primary{background:var(--grad);color:#fff;box-shadow:0 6px 16px rgba(11,156,107,.22)}
.cta a.primary:hover{text-decoration:none;filter:brightness(1.05)}
.cta a.ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
.cta a.ghost:hover{text-decoration:none;background:#f7fbf9}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);margin-top:38px;padding:26px 0 34px;background:#fff}
.site-footer .wrap{display:flex;gap:18px;flex-wrap:wrap;align-items:flex-start;justify-content:space-between}
.site-footer p{margin:0;color:var(--ink-3);font-size:12.5px;line-height:1.9}
.site-footer .fl{display:flex;gap:14px;flex-wrap:wrap;font-size:12.8px}
.site-footer .copy{margin-top:6px;color:#8a94a3;font-size:12px}
.site-footer .copy a{color:#8a94a3;text-decoration:none;border-bottom:1px dotted #c9d2cf}
.site-footer .copy a:hover{color:var(--accent)}
.site-footer .sep{margin:0 7px;opacity:.45}
.crumb{font-size:12.5px;color:var(--ink-3);margin:18px 0 0}
.crumb a{color:var(--ink-3)}
.crumb span{margin:0 6px}


/* ---------- 顶部实时计数 ---------- */
.hero-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.hero-top .eyebrow{margin-bottom:0}
.livebar{display:inline-flex;align-items:center;gap:8px;padding:5px 13px 5px 11px;border-radius:999px;
  background:linear-gradient(180deg,#ffffff,#f7fdfa);border:1px solid #d7efe5;
  box-shadow:0 2px 10px rgba(9,32,24,.06),inset 0 1px 0 #fff;
  font-size:12.5px;color:var(--ink-3);white-space:nowrap;
  opacity:0;transform:translateY(-3px);transition:opacity .45s ease,transform .45s ease}
.livebar.on{opacity:1;transform:none}
.livebar .lp{width:7px;height:7px;border-radius:50%;background:#12b47c;flex:0 0 auto;
  box-shadow:0 0 0 0 rgba(18,180,124,.55);animation:lpPulse 2.2s infinite}
@keyframes lpPulse{0%{box-shadow:0 0 0 0 rgba(18,180,124,.5)}70%{box-shadow:0 0 0 8px rgba(18,180,124,0)}100%{box-shadow:0 0 0 0 rgba(18,180,124,0)}}
.livebar .lab{font-size:11.5px;color:#12a072;letter-spacing:.4px}
.livebar .kv{display:inline-flex;align-items:baseline;gap:3px}
.livebar b{color:var(--accent-d);font-size:14.5px;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:.2px}
.livebar .sep{width:1px;height:13px;background:#dbe9e4}
@media (max-width:420px){
  .hero-top{gap:8px}
  .livebar{font-size:12px;padding:4px 11px}
  .livebar b{font-size:13.5px}
  .livebar .lab{display:none}
}

/* ---------- Responsive ---------- */
@media (max-width:760px){
  .grid{grid-template-columns:1fr}
  .tool-actions{grid-template-columns:1fr 1fr}
  .nav{font-size:12.5px;gap:0}
  .nav a{padding:6px 8px}
  .site-header .wrap{height:auto;padding-top:8px;padding-bottom:8px;flex-wrap:wrap}
  h2{margin-top:28px}
  table{font-size:13px}
  th,td{padding:9px 10px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}