/* ============================================================
   瓜子音乐官网 · 子页面共享样式（更新日志 / Pro 激活等）
   与首页 home.css 同一设计语言：深色玻璃拟态 + 动态主题色
   依赖 home.css 的 :root 变量与导航/页脚样式
   ============================================================ */

/* ---------- 页面头 ---------- */
.page-hero {
  position: relative;
  padding: calc(var(--nav-h) + 84px) 24px 64px;
  text-align: center;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(560px 300px at 50% 0%, rgba(255, 45, 85, 0.10), transparent 70%);
}
.page-hero-inner { position: relative; max-width: var(--max-w); margin: 0 auto; }
.page-eyebrow {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.page-title {
  font-size: clamp(32px, 4.6vw, 52px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 14px;
}
.page-desc { color: var(--fg-2); font-size: 16px; max-width: 34em; margin: 0 auto; }

.page-body {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px 110px;
}

/* ---------- 更新日志时间线 ---------- */
.changelog-stats {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 34px;
  font-size: 13px;
  color: var(--fg-3);
}

.tl-list { position: relative; display: flex; flex-direction: column; gap: 22px; }
.tl-list::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), rgba(255, 255, 255, 0.08) 40%, rgba(255, 255, 255, 0.04));
}
.tl-item { position: relative; padding-left: 34px; }
.tl-marker {
  position: absolute;
  left: 0;
  top: 26px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.25);
  background: var(--bg);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.tl-item:hover .tl-marker { border-color: var(--accent); box-shadow: 0 0 12px var(--accent-soft); }
.tl-item.is-latest .tl-marker {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 14px rgba(255, 45, 85, 0.55);
}

.tl-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.025);
  padding: 22px 24px;
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
.tl-item:hover .tl-card { border-color: var(--line-strong); background: rgba(255, 255, 255, 0.045); transform: translateX(3px); }
.tl-item.is-latest .tl-card {
  border-color: rgba(255, 45, 85, 0.28);
  background: linear-gradient(160deg, rgba(255, 45, 85, 0.07), rgba(255, 255, 255, 0.02) 55%);
}

.tl-head { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 14px; }
.tl-version {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
  font-family: 'Inter', var(--font);
}
.tl-latest-tag {
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.tl-pin {
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(251, 146, 60, 0.15);
  border: 1px solid rgba(251, 146, 60, 0.3);
  color: #fdba74;
  font-size: 11px;
  font-weight: 700;
}
.tl-date { margin-left: auto; font-size: 12.5px; color: var(--fg-3); font-family: 'Inter', var(--font); }

/* 日志条目（按类别着色） */
.tl-changes { list-style: none; display: flex; flex-direction: column; gap: 7px; }
.tl-changes li { display: flex; align-items: flex-start; gap: 9px; font-size: 14px; color: var(--fg-2); line-height: 1.65; }
.tl-tag {
  flex-shrink: 0;
  margin-top: 2.5px;
  padding: 1px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.08);
  color: var(--fg-2);
}
.tl-tag.is-new { background: rgba(52, 211, 153, 0.14); color: #6ee7b7; }
.tl-tag.is-fix { background: rgba(255, 45, 85, 0.13); color: #ff8fa3; }
.tl-tag.is-opt { background: rgba(56, 189, 248, 0.13); color: #7dd3fc; }
.tl-tag.is-pro {
  background: linear-gradient(135deg, rgba(250, 204, 21, 0.25), rgba(234, 179, 8, 0.14)) !important;
  color: #facc15 !important;
  text-shadow: 0 0 10px rgba(250, 204, 21, 0.35) !important;
}
.tl-tag.is-untested { background: rgba(251, 146, 60, 0.14); color: #fdba74; }
.tl-tag.is-experimental { background: rgba(167, 139, 250, 0.14); color: #c4b5fd; }
.tl-tag.is-deprecated { background: rgba(156, 163, 175, 0.11); color: #9ca3af; text-decoration: line-through; }
.tl-tag.is-wip { background: rgba(96, 165, 250, 0.13); color: #93c5fd; }
.tl-plain { padding-left: 2px; }

.tl-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.tl-size { font-size: 12.5px; color: var(--fg-3); }
.tl-dl-group {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.tl-dl {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.04);
  color: var(--fg);
  font-size: 12.5px;
  font-weight: 600;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.tl-dl:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.28); transform: translateY(-1px); }
.tl-dl svg { width: 14px; height: 14px; }
.tl-dl--accent { background: var(--accent-soft); border-color: rgba(255, 45, 85, 0.35); }
.tl-dl--accent:hover { background: rgba(255, 45, 85, 0.26); border-color: rgba(255, 45, 85, 0.5); }

.load-more-wrap { display: flex; justify-content: center; margin-top: 38px; }
.state-block {
  padding: 60px 0;
  text-align: center;
  color: var(--fg-3);
  font-size: 14px;
}

/* ---------- Pro 页 ---------- */
.pro-hero-card {
  position: relative;
  border-radius: calc(var(--radius-lg) + 4px);
  border: 1px solid rgba(255, 45, 85, 0.22);
  background:
    radial-gradient(90% 130% at 50% -30%, rgba(255, 45, 85, 0.14), transparent 60%),
    radial-gradient(50% 60% at 90% 120%, rgba(139, 92, 246, 0.10), transparent 70%),
    var(--bg-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  padding: 56px clamp(24px, 5vw, 60px);
  text-align: center;
  overflow: hidden;
  margin-bottom: 26px;
}
.pro-hero-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 45, 85, 0.5), transparent);
}
.pro-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 15px;
  border-radius: 999px;
  background: linear-gradient(135deg, #ff2d55, #ff6b8a);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.1em;
  margin-bottom: 22px;
  box-shadow: 0 6px 20px -6px rgba(255, 45, 85, 0.5);
}
.pro-badge svg { width: 13px; height: 13px; }
.pro-hero-card h2 {
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
  background: linear-gradient(135deg, #fff 20%, rgba(255, 255, 255, 0.6));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.pro-hero-card > p { color: var(--fg-2); font-size: 15px; line-height: 1.8; max-width: 36em; margin: 0 auto; }
.pro-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 9px;
  margin-top: 26px;
}
.pro-tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 15px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  font-size: 12.5px;
  color: var(--fg-2);
}
.pro-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff2d55, #ff6b8a);
}

.pro-no-need {
  margin-top: 22px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px dashed rgba(255, 255, 255, 0.2);
  color: var(--fg-2);
  font-size: 13px;
}
.pro-no-need strong { color: var(--fg); }

/* Pro 定价卡片 */
.price-section { margin-bottom: 26px; text-align: center; }
.price-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.price-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.025);
  padding: 24px 16px;
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.25s ease, background 0.25s ease;
}
.price-card:hover { transform: translateY(-4px); border-color: var(--line-strong); background: rgba(255, 255, 255, 0.05); }
.price-name { font-size: 14px; font-weight: 700; color: var(--fg-2); }
.price-value {
  margin-top: 12px;
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff 30%, rgba(255, 255, 255, 0.65));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.price-cny { font-size: 17px; font-weight: 700; margin-right: 2px; }
.price-unit { margin-top: 4px; font-size: 12.5px; color: var(--fg-3); }
.price-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  padding: 13px 34px;
  border-radius: 999px;
  background: linear-gradient(135deg, #ff2d55, #ff6b8a);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  box-shadow: 0 8px 24px -8px rgba(255, 45, 85, 0.55);
  transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.25s ease;
}
.price-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 30px -8px rgba(255, 45, 85, 0.65); }
.price-cta svg { width: 15px; height: 15px; }
.price-note { margin-top: 12px; font-size: 12.5px; color: var(--fg-3); }

/* 免费权益高亮面板 */
.pro-free {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(52, 211, 153, 0.25);
  background:
    radial-gradient(70% 120% at 50% -20%, rgba(52, 211, 153, 0.10), transparent 60%),
    rgba(255, 255, 255, 0.02);
  padding: 30px 32px;
  text-align: center;
  margin-bottom: 26px;
}
.pro-free-title {
  font-size: 17px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 8px;
}
.pro-free-deadline {
  display: inline-block;
  margin-top: 6px;
  padding: 4px 14px;
  border-radius: 999px;
  background: rgba(255, 45, 85, 0.12);
  border: 1px solid rgba(255, 45, 85, 0.3);
  color: #ff8fa3;
  font-size: 13px;
  font-weight: 700;
}
.pro-free p { font-size: 14px; color: var(--fg-2); line-height: 1.8; }
.pro-free a { color: var(--accent); font-weight: 600; }
.pro-free a:hover { text-decoration: underline; }

/* 成本说明卡片 */
.cost-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 26px 0;
}
.cost-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.025);
  padding: 24px 22px;
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.25s ease, background 0.25s ease;
}
.cost-card:hover { transform: translateY(-4px); border-color: var(--line-strong); background: rgba(255, 255, 255, 0.05); }
.cost-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 11px;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 14px;
}
.cost-icon svg { width: 20px; height: 20px; }
.cost-card h3 { font-size: 15.5px; font-weight: 700; margin-bottom: 7px; }
.cost-card p { font-size: 13px; color: var(--fg-2); line-height: 1.75; }

.pro-why { margin-top: 56px; }
.pro-why-note {
  font-size: 14.5px;
  color: var(--fg-2);
  line-height: 1.85;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.025);
  padding: 24px 26px;
}
.pro-why-note strong { color: var(--fg); }
.pro-why-note a { color: var(--accent); font-weight: 600; }
.pro-why-note a:hover { text-decoration: underline; }
.pro-doc-link { display: inline-flex; margin-top: 14px; }

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .cost-grid { grid-template-columns: 1fr; }
  .price-grid { grid-template-columns: repeat(2, 1fr); }
  .tl-date { margin-left: 0; width: 100%; }
  .page-body { padding-bottom: 72px; }
}

@media (max-width: 400px) {
  .price-grid { grid-template-columns: 1fr; }
}