:root {
  --accent: #EA9746;
  --accent-dark: #d47f2c;
  --accent-soft: #fdf3e5;
  --text: #23272f;
  --text-soft: #6b7280;
  --border: #e8e9ee;
  --bg: #f6f7fb;
  --card: #ffffff;
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #d97706;
  --radius: 14px;
  --shadow: 0 2px 12px rgba(23, 27, 38, .06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

.wrap { width: 100%; max-width: 960px; margin: 0 auto; padding: 0 16px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 30;
}
.header-inner {
  display: flex; align-items: center; gap: 16px;
  min-height: 60px; padding: 8px 0; flex-wrap: wrap;
}
.logo { font-size: 18px; font-weight: 700; white-space: nowrap; }
.logo-icon { margin-right: 4px; }
.logo-sub { color: var(--accent); }
.nav { display: flex; gap: 6px; flex: 1; flex-wrap: wrap; }
.nav a {
  padding: 6px 12px; border-radius: 999px; color: var(--text-soft); font-size: 15px;
  white-space: nowrap;
}
.nav a:hover { background: var(--accent-soft); color: var(--accent-dark); }
.nav a.active { background: var(--accent-soft); color: var(--accent-dark); font-weight: 600; }
.user-area {
  display: flex; align-items: center; gap: 8px; font-size: 14px;
  margin-left: auto; flex-wrap: wrap; row-gap: 6px; justify-content: flex-end;
}
.username { font-weight: 600; max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.guest-hint { color: var(--text-soft); white-space: nowrap; }

/* 语言切换 */
.lang-switch {
  display: inline-flex; align-items: center; flex-wrap: wrap; border: 1px solid var(--border);
  border-radius: 999px; overflow: hidden; background: #fff;
}
.lang-link { padding: 3px 9px; font-size: 12.5px; color: var(--text-soft); white-space: nowrap; }
.lang-link:hover { background: var(--accent-soft); color: var(--accent-dark); }
.lang-link.active { background: var(--accent-soft); color: var(--accent-dark); font-weight: 600; }

.main { padding: 24px 16px 40px; min-height: calc(100vh - 200px); }

.site-footer {
  border-top: 1px solid var(--border); background: #fff; padding: 18px 0;
  color: var(--text-soft); font-size: 13px; text-align: center;
}
.site-footer p { margin: 2px 0; }
.muted { color: var(--text-soft); }

/* 页脚内链（SEO 用站内链接） */
.footer-inner { display: flex; flex-direction: column; gap: 10px; }
.footer-links {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px;
}
.footer-links .footer-title { color: var(--text); font-weight: 600; }
.footer-links a { color: var(--text-soft); }
.footer-links a:hover { color: var(--accent-dark); }

/* 区块标题 / 面包屑 / CTA / 内容列表 */
.section-title { font-size: 17px; font-weight: 700; margin: 22px 0 12px; }
.breadcrumb {
  display: flex; align-items: center; gap: 8px; font-size: 13px;
  color: var(--text-soft); margin-bottom: 12px;
}
.breadcrumb a { color: var(--text-soft); }
.breadcrumb a:hover { color: var(--accent-dark); }
.crumb-sep { color: #c4c8d0; }
.crumb-current { color: var(--text); }
.cta-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 14px; }
.page-header .lead { font-size: 15px; }
.feature-list { margin: 0; padding-left: 20px; display: flex; flex-direction: column; gap: 8px; }
.feature-list li { line-height: 1.7; }
.step-list { margin: 0; padding-left: 22px; display: flex; flex-direction: column; gap: 10px; }
.step-list li { line-height: 1.7; }
.faq-list { display: flex; flex-direction: column; gap: 8px; }
.faq-item {
  border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; background: #fcfcfe;
}
.faq-item summary { cursor: pointer; font-weight: 600; }
.faq-item p { margin: 10px 0 0; color: var(--text-soft); line-height: 1.7; }
.related-links { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: 1px solid transparent; border-radius: 10px; padding: 9px 16px;
  font-size: 15px; cursor: pointer; background: #fff; transition: .15s;
}
.btn-sm { padding: 5px 12px; font-size: 14px; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost { border-color: var(--border); color: var(--text-soft); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-dark); }
.btn-danger { background: #fff; border-color: #f3c9c9; color: var(--danger); }
.btn-danger:hover { background: #fef2f2; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-block { width: 100%; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px; margin-bottom: 18px;
}
.card-title { font-size: 17px; font-weight: 700; margin: 0 0 12px; }

.page-header { margin-bottom: 18px; }
.page-header h1 { font-size: 22px; margin: 0 0 4px; }
.page-header p { margin: 0; color: var(--text-soft); font-size: 14px; }

/* ---------- 提示卡 ---------- */
.tips-card {
  background: #fffbf4; border: 1px solid #f6e3c8; border-radius: var(--radius);
  padding: 14px 16px; margin-bottom: 18px;
}
.tips-header { font-weight: 700; color: var(--accent-dark); margin-bottom: 6px; }
.tips-content { display: flex; flex-direction: column; gap: 4px; font-size: 14px; color: #7a6446; }

/* ---------- 首页功能卡 ---------- */
.card-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 14px;
}
.feature-card {
  display: block; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow);
  transition: .15s; cursor: pointer;
}
.feature-card:hover { transform: translateY(-2px); border-color: var(--accent); box-shadow: 0 8px 20px rgba(234,151,70,.16); }
.feature-icon { font-size: 30px; }
.feature-title { font-size: 17px; font-weight: 700; margin-top: 8px; }
.feature-desc { color: var(--text-soft); font-size: 13px; margin-top: 4px; }
.feature-card.highlight {
  grid-column: 1 / -1; display: flex; align-items: center; gap: 16px;
  background: linear-gradient(120deg, #fff7ec, #fff); border-color: #f3ddbe;
}
.feature-card.highlight .feature-icon { font-size: 34px; }

/* ---------- 表单 ---------- */
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.input, input[type=text], input[type=password], input[type=url] {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px;
  font-size: 15px; background: #fff; color: var(--text);
}
.input:focus, input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(234,151,70,.15); }
.form-hint { font-size: 13px; color: var(--text-soft); margin-top: 4px; }
.auth-card { max-width: 420px; margin: 30px auto; }

/* ---------- 音轨滑块 ---------- */
.slider-grid { display: flex; flex-direction: column; gap: 12px; }
.slider-row { display: grid; grid-template-columns: 56px 1fr 56px; align-items: center; gap: 10px; }
.slider-row .slider-name { font-size: 14px; color: var(--text-soft); }
.slider-row .slider-value { font-size: 13px; color: var(--accent-dark); text-align: right; font-variant-numeric: tabular-nums; }
input[type=range] { width: 100%; accent-color: var(--accent); }
.preset-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }

/* ---------- 上传区 ---------- */
.upload-zone {
  border: 2px dashed #dfe2ea; border-radius: var(--radius); padding: 26px 20px;
  text-align: center; background: #fcfcfe; cursor: pointer; transition: .15s;
}
.upload-zone:hover, .upload-zone.dragover { border-color: var(--accent); background: var(--accent-soft); }
.upload-zone .zone-icon { font-size: 34px; }
.upload-zone .zone-title { font-weight: 700; margin-top: 8px; }
.upload-zone .zone-desc { color: var(--text-soft); font-size: 13px; }
.option-list { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }
.option-item {
  display: flex; align-items: center; gap: 12px; padding: 14px 16px; background: #fff;
  border: 1px solid var(--border); border-radius: var(--radius); cursor: pointer;
}
.option-item:hover { border-color: var(--accent); }
.option-item .opt-icon { font-size: 22px; }
.option-item .opt-title { font-weight: 600; }
.option-item .opt-desc { color: var(--text-soft); font-size: 13px; }

/* ---------- 进度条 ---------- */
.progress-wrap { margin-top: 14px; }
.progress-bar { height: 10px; background: #eef0f5; border-radius: 999px; overflow: hidden; }
.progress-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), #f5b877); transition: width .2s; }
.progress-text { font-size: 13px; color: var(--text-soft); margin-top: 6px; text-align: center; }

/* ---------- 任务记录 ---------- */
.record-list { display: flex; flex-direction: column; gap: 14px; }
.record-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px;
}
.record-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.record-id { font-weight: 700; }
.badge {
  font-size: 12px; padding: 3px 10px; border-radius: 999px; background: #eef0f5; color: var(--text-soft);
  white-space: nowrap;
}
.badge.status-0 { background: #eef4ff; color: #2563eb; }
.badge.status-1 { background: #fff7e6; color: var(--warning); }
.badge.status-2 { background: #ecfdf3; color: var(--success); }
.badge.status-3 { background: #fef2f2; color: var(--danger); }
.badge.status-5 { background: #f5f0ff; color: #7c3aed; }
.record-info { margin: 10px 0 4px; font-size: 14px; color: var(--text-soft); display: flex; flex-direction: column; gap: 3px; }
.record-info .info-row { display: flex; gap: 6px; }
.record-info .label { color: #9aa1ad; min-width: 68px; }
.record-info .value { color: var(--text); word-break: break-all; }
.record-gain { white-space: pre-line; font-size: 13px; color: var(--accent-dark); }
.record-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 12px; }
.empty-state { text-align: center; padding: 48px 16px; color: var(--text-soft); }
.empty-state .empty-icon { font-size: 40px; }
.empty-state .empty-text { display: block; font-size: 16px; margin-top: 10px; color: var(--text); }

/* ---------- 结果页 ---------- */
.track { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; margin-bottom: 16px; }
.track-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.track-label { font-size: 16px; font-weight: 700; }
.play-controls { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.play-btn {
  width: 42px; height: 42px; border-radius: 50%; border: none; background: var(--accent); color: #fff;
  font-size: 17px; cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
  flex: 0 0 auto;
}
.play-btn:hover { background: var(--accent-dark); }
.time { font-size: 13px; color: var(--text-soft); font-variant-numeric: tabular-nums; min-width: 40px; text-align: center; }
.seek { flex: 1; min-width: 140px; }
.loop-toggle { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-soft); white-space: nowrap; }
.download-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.gain-panel { border-top: 1px dashed var(--border); margin-top: 14px; padding-top: 14px; }
.gain-msg { font-size: 13px; color: var(--accent-dark); white-space: pre-line; }

/* ---------- 个人中心 ---------- */
.info-list { display: flex; flex-direction: column; gap: 8px; font-size: 14px; }
.info-list .row { display: flex; gap: 8px; }
.info-list .label { color: #9aa1ad; min-width: 90px; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 12px; }
.stat { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; text-align: center; }
.stat .num { font-size: 24px; font-weight: 700; color: var(--accent-dark); }
.stat .name { font-size: 13px; color: var(--text-soft); }

/* ---------- flash / toast ---------- */
.flash-area { margin-bottom: 16px; display: flex; flex-direction: column; gap: 8px; }
.flash { padding: 10px 14px; border-radius: 10px; font-size: 14px; border: 1px solid transparent; }
.flash-success { background: #ecfdf3; border-color: #bbf7d0; color: #15803d; }
.flash-danger { background: #fef2f2; border-color: #fecaca; color: #b91c1c; }
.flash-warning { background: #fffbeb; border-color: #fde68a; color: #b45309; }
.toast {
  position: fixed; left: 50%; bottom: 40px; transform: translateX(-50%);
  background: rgba(35,39,47,.92); color: #fff; padding: 10px 18px; border-radius: 10px;
  font-size: 14px; z-index: 100; max-width: 80vw;
}

/* ---------- 弹窗 ---------- */
.modal-mask {
  position: fixed; inset: 0; background: rgba(20,22,28,.45); display: flex;
  align-items: center; justify-content: center; padding: 16px; z-index: 50;
}
.modal {
  background: #fff; border-radius: var(--radius); width: 100%; max-width: 460px; padding: 20px;
  box-shadow: 0 20px 50px rgba(0,0,0,.2);
}
.modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.modal-head h3 { margin: 0; font-size: 17px; }
.modal-close { border: none; background: none; font-size: 22px; line-height: 1; cursor: pointer; color: var(--text-soft); }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 16px; }
[hidden] { display: none !important; }

@media (max-width: 640px) {
  .header-inner { height: auto; padding: 10px 0; flex-wrap: wrap; }
  .nav { order: 3; width: 100%; }
  .user-area { margin-left: auto; flex-wrap: wrap; row-gap: 6px; }
  .lang-link { padding: 3px 7px; font-size: 12px; }
  .slider-row { grid-template-columns: 48px 1fr 48px; }
}