/* ============================================================
   dl_treasure · base.css
   全局变量 / 文字 / 按钮 / 徽标 / 链接（GitHub Releases 风）
   ============================================================ */

:root {
  --dl-primary: #ca8a04;
  --dl-primary-hover: #0860c4;
  --dl-success: #1f883d;
  --dl-danger: #cf222e;
  --dl-warning: #9a6700;
  --dl-bg: #ffffff;
  --dl-bg-soft: #f6f8fa;
  --dl-bg-alt: #f0f3f6;
  --dl-border: #d0d7de;
  --dl-border-soft: #e6ebf1;
  --dl-text: #1f2328;
  --dl-text-2: #424a53;
  --dl-muted: #656d76;
  --dl-shadow-sm: 0 1px 2px rgba(31, 35, 40, 0.04);
  --dl-shadow: 0 4px 14px rgba(31, 35, 40, 0.08);
  --dl-shadow-lg: 0 8px 30px rgba(31, 35, 40, 0.10);
  --dl-radius: 10px;
  --dl-radius-sm: 6px;
  --dl-radius-lg: 14px;
}

* { box-sizing: border-box; }

html, body {
  background: var(--dl-bg);
  color: var(--dl-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  -webkit-font-smoothing: antialiased;
  font-size: 15px;
  line-height: 1.55;
}

a { color: var(--dl-primary); text-decoration: none; transition: color .15s; }
a:hover { color: var(--dl-primary-hover); }

img { max-width: 100%; height: auto; }

.dl-muted { color: var(--dl-muted) !important; }
.dl-text-2 { color: var(--dl-text-2); }

.dl-link {
  color: var(--dl-primary);
  font-weight: 500;
}
.dl-link:hover { text-decoration: underline; }

/* ===== Buttons ===== */
.btn-dl-primary {
  background: var(--dl-primary);
  color: #fff;
  border: 1px solid var(--dl-primary);
  font-weight: 600;
  border-radius: 8px;
  padding: 8px 16px;
  transition: all .2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-dl-primary:hover,
.btn-dl-primary:focus {
  background: var(--dl-primary-hover);
  border-color: var(--dl-primary-hover);
  color: #fff;
  box-shadow: 0 2px 8px rgba(9, 105, 218, .25);
}

.btn-dl-success {
  background: var(--dl-success);
  color: #fff;
  border: 1px solid var(--dl-success);
  font-weight: 600;
  border-radius: 8px;
  padding: 8px 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all .2s;
}
.btn-dl-success:hover { background: #1a7733; color: #fff; }

.btn-dl-outline {
  background: #fff;
  color: var(--dl-text);
  border: 1px solid var(--dl-border);
  font-weight: 500;
  border-radius: 8px;
  padding: 8px 16px;
  transition: all .2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-dl-outline:hover {
  background: var(--dl-bg-soft);
  border-color: var(--dl-primary);
  color: var(--dl-primary);
}

.btn-dl-platform {
  background: #fff;
  color: var(--dl-text);
  border: 1px solid var(--dl-border);
  border-radius: 8px;
  padding: 10px 16px;
  font-weight: 500;
  transition: all .2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-dl-platform:hover {
  background: var(--dl-bg-soft);
  border-color: var(--dl-primary);
  color: var(--dl-primary);
  transform: translateY(-1px);
}

.btn-dl-main {
  padding: 12px 22px;
  font-size: 16px;
  border-radius: 10px;
  box-shadow: 0 2px 0 rgba(31, 35, 40, 0.08);
}
.btn-dl-main .dl-btn-text {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.15;
}
.btn-dl-main .dl-btn-text strong { font-size: 15px; }
.btn-dl-main .dl-btn-text small {
  font-weight: 400;
  font-size: 12px;
  opacity: .85;
  margin-top: 2px;
}

/* ===== Badges ===== */
.dl-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--dl-border);
  background: #fff;
  color: var(--dl-text);
}
.dl-badge-success {
  background: rgba(31, 136, 61, 0.1);
  border-color: rgba(31, 136, 61, 0.3);
  color: var(--dl-success);
}
.dl-badge-primary {
  background: rgba(9, 105, 218, 0.08);
  border-color: rgba(9, 105, 218, 0.3);
  color: var(--dl-primary);
}
.dl-badge-soft { background: var(--dl-bg-soft); color: var(--dl-muted); }

/* ===== Section Titles ===== */
.dl-section-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--dl-text);
  letter-spacing: -.5px;
  margin: 0 0 6px;
}

.dl-section-head { margin-bottom: 24px; }

/* ===== Generic Card ===== */
.dl-card {
  background: #fff;
  border: 1px solid var(--dl-border);
  border-radius: var(--dl-radius);
  padding: 20px;
  transition: all .2s;
}

/* MOBILE ENHANCED - base */
@media (max-width: 991.98px) {
  html, body { font-size: 15px; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
}
@media (max-width: 768px) {
  html, body { font-size: 16px; }
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.45rem; }
  .btn { min-height: 44px; }
  .py-5 { padding-top: 2.5rem !important; padding-bottom: 2.5rem !important; }
  img, svg, video, iframe { max-width: 100%; height: auto; }
  table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  input, textarea, select { font-size: 16px; }
}
@media (max-width: 480px) {
  html, body { font-size: 15px; }
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
  .btn { padding: 10px 14px; font-size: 14px; }
}