/* 全本地 CSS，不引用任何外部 CDN 或字体（保证中国大陆访问速度）。 */

:root {
  --primary: #0b6b8a;
  --primary-dark: #084e66;
  --accent: #d9534f;
  --text: #1c2733;
  --muted: #5b6b78;
  --bg: #f7f9fb;
  --card: #ffffff;
  --border: #e2e8ee;
  --shadow: 0 2px 8px rgba(20, 40, 60, 0.06);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-dark);
}
.brand small {
  font-weight: 400;
  color: var(--muted);
  font-size: 13px;
  margin-left: 8px;
}
.nav a {
  margin-left: 20px;
  color: var(--text);
  font-size: 15px;
}
.nav a.cta {
  background: var(--primary);
  color: #fff;
  padding: 8px 16px;
  border-radius: 6px;
}
.nav a.cta:hover { background: var(--primary-dark); text-decoration: none; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, #0b6b8a 0%, #084e66 100%);
  color: #fff;
  padding: 70px 0 60px;
}
.hero h1 {
  font-size: 34px;
  margin: 0 0 16px;
  line-height: 1.3;
}
.hero p.lead {
  font-size: 18px;
  opacity: 0.92;
  max-width: 680px;
  margin: 0 0 28px;
}
.hero .btn {
  display: inline-block;
  background: #fff;
  color: var(--primary-dark);
  padding: 12px 26px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 16px;
}
.hero .btn:hover { background: #f0f5f8; text-decoration: none; }

/* ---------- 分区 ---------- */
section.block { padding: 60px 0; }
section.block h2 {
  font-size: 26px;
  margin: 0 0 12px;
  color: var(--primary-dark);
}
section.block .sub {
  color: var(--muted);
  margin: 0 0 32px;
  font-size: 15px;
}
.alt-bg { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* 三栏卡片 */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  box-shadow: var(--shadow);
}
.card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  color: var(--primary-dark);
}
.card .step-num {
  display: inline-block;
  width: 32px;
  height: 32px;
  line-height: 32px;
  text-align: center;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  margin-bottom: 10px;
}
.card p { margin: 0; color: var(--muted); font-size: 14px; }

/* 医生卡 */
.doctor-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  box-shadow: var(--shadow);
}
.doctor-card .name { font-size: 18px; font-weight: 700; margin-bottom: 4px; color: var(--primary-dark); }
.doctor-card .title { color: var(--accent); font-size: 14px; margin-bottom: 12px; }
.doctor-card .meta { color: var(--muted); font-size: 14px; margin: 4px 0; }
.doctor-card .bio { font-size: 14px; color: var(--text); margin-top: 12px; }

/* 优势列表 */
ul.advantages {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}
ul.advantages li {
  background: #fff;
  border-left: 4px solid var(--primary);
  padding: 14px 18px;
  border-radius: 6px;
  box-shadow: var(--shadow);
  font-size: 15px;
}

/* ---------- 表单 ---------- */
.form-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 30px;
  box-shadow: var(--shadow);
}
.form-row { margin-bottom: 18px; }
.form-row label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 15px;
}
.form-row label .req { color: var(--accent); }
.form-row input[type=text],
.form-row input[type=email],
.form-row input[type=number],
.form-row select,
.form-row textarea {
  width: 100%;
  border: 1px solid #cdd6df;
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 15px;
  font-family: inherit;
  background: #fff;
}
.form-row textarea { min-height: 110px; resize: vertical; }
.form-row .hint { font-size: 13px; color: var(--muted); margin-top: 4px; }

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
@media (max-width: 600px) {
  .form-grid-2 { grid-template-columns: 1fr; }
}

button.submit-btn {
  background: var(--primary);
  color: #fff;
  border: 0;
  padding: 14px 32px;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
}
button.submit-btn:hover { background: var(--primary-dark); }

.flash {
  padding: 12px 16px;
  border-radius: 6px;
  margin-bottom: 18px;
  font-size: 14px;
}
.flash.error { background: #fdecea; color: #a4332e; border: 1px solid #f5c1bd; }

/* 付款区域 */
.pay-box {
  background: #f4faf7;
  border: 1px dashed #79c2a2;
  border-radius: 10px;
  padding: 22px;
  margin: 24px 0;
}
.pay-box h3 { margin: 0 0 10px; color: #1d6a4a; font-size: 18px; }
.qr-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-top: 14px;
}
.qr-grid .qr {
  background: #fff;
  border: 1px solid var(--border);
  padding: 14px;
  border-radius: 8px;
  text-align: center;
  font-size: 14px;
}
.qr img { max-width: 100%; height: auto; display: block; margin: 0 auto 8px; }
.qr-placeholder {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  background: #f0f3f6;
  border-radius: 4px;
  font-size: 13px;
  margin-bottom: 8px;
}

/* 成功页 */
.success-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 40px;
  box-shadow: var(--shadow);
  text-align: center;
}
.success-card .check {
  font-size: 56px;
  color: #2da06b;
  margin-bottom: 14px;
  line-height: 1;
}
.success-card h2 { color: var(--primary-dark); margin-top: 0; }
.success-card .ref {
  display: inline-block;
  background: #f0f5f8;
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 15px;
  margin: 6px 0 16px;
}

/* 后台简表 */
table.admin {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
table.admin th, table.admin td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  text-align: left;
}
table.admin th { background: #f4f6f8; }

/* 页脚 */
.site-footer {
  background: #1c2733;
  color: #aab8c3;
  padding: 30px 0;
  margin-top: 40px;
  text-align: center;
  font-size: 13px;
}
.site-footer a { color: #aab8c3; }

/* 一些工具类 */
.center { text-align: center; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-2 { margin-bottom: 16px; }
.small { font-size: 13px; color: var(--muted); }