/* =====================================================================
 *  合规与说明页样式（legal.css）
 *  用于：privacy/ 安全声明 safety/ 章程 charter/ forms/ 两个登记说明页。
 *  品牌视觉与官网一致（海军蓝 + 香槟金 + 象牙白），以清晰易读为第一原则。
 * ===================================================================== */

:root {
  --navy-950: #071522;
  --navy-900: #0B2233;
  --navy-800: #123149;
  --gold: #C5A15B;
  --gold-lt: #DCC58F;
  --gold-deep: #75591B;
  --ivory: #F6F2E8;
  --paper: #FBF9F3;
  --ink: #17232C;
  --muted: #5C6874;
  --line: rgba(18, 49, 73, 0.14);
  --white: #ffffff;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(7, 21, 34, 0.10);
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
               "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.7;
}

:focus-visible { outline: 2px solid var(--navy-800); outline-offset: 2px; }
.doc-topbar :focus-visible, .doc-footer :focus-visible { outline-color: var(--gold-lt); }

/* 顶栏 */
.doc-topbar {
  background: linear-gradient(160deg, var(--navy-950), var(--navy-900));
  padding: 14px 0;
}
.doc-topbar__inner {
  max-width: 880px; margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.doc-topbar__brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--white); text-decoration: none; font-weight: 700; letter-spacing: 0.5px;
}
.doc-topbar__brand img { width: 32px; height: 32px; }
.doc-topbar__back {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px;
  color: var(--gold-lt); text-decoration: none; font-size: 14px;
  border: 1px solid rgba(220, 197, 143, 0.4); border-radius: 999px;
  padding: 6px 16px; white-space: nowrap;
}
.doc-topbar__back:hover { background: rgba(220, 197, 143, 0.12); }

/* 正文 */
.doc-main { max-width: 880px; margin: 0 auto; padding: 40px 20px 64px; }
.doc-kicker {
  color: var(--gold-deep); font-size: 13px; letter-spacing: 2px;
  text-transform: uppercase; margin: 0 0 8px;
}
.doc-title {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(26px, 5vw, 36px); line-height: 1.3;
  margin: 0 0 6px; color: var(--navy-900);
}
.doc-meta { color: var(--muted); font-size: 13.5px; margin: 0 0 28px; }
.doc-lede { font-size: 16px; color: var(--ink); margin: 0 0 28px; }

/* 页内目录（长文档页顶部，锚点跳转） */
.doc-toc {
  margin: 0 0 32px; padding: 14px 0 10px;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.doc-toc__title {
  margin: 0 0 8px; font-size: 13px; font-weight: 700;
  letter-spacing: 2px; color: var(--gold-deep);
}
.doc-toc__list { margin: 0; padding-left: 1.4em; }
.doc-toc__list li { margin: 4px 0; }
.doc-toc__list li::marker { color: var(--gold); }
.doc-toc__list a { color: var(--navy-800); text-decoration: none; }
.doc-toc__list a:hover { color: var(--gold-deep); text-decoration: underline; }
@media (min-width: 560px) {
  .doc-toc__list { columns: 2; column-gap: 36px; }
}

/* 章节：连续文档排版 + 细分隔线，仅警告/提示保留卡片 */
.doc-section {
  margin: 0 0 28px; padding: 0 0 28px;
  border-bottom: 1px solid var(--line);
}
.doc-section h2 {
  font-family: var(--font-display); font-size: 20px; color: var(--navy-900);
  margin: 0 0 12px;
}
.doc-section h3 { font-size: 16px; color: var(--navy-800); margin: 18px 0 8px; }
.doc-section p { margin: 0 0 10px; }
.doc-section ul, .doc-section ol { margin: 0 0 10px; padding-left: 1.4em; }
.doc-section li { margin: 4px 0; }
.doc-section li::marker { color: var(--gold); }

/* 章节折叠（原生 details，默认展开，可点击标题收起） */
details.doc-section > summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; gap: 12px;
  border-radius: 6px;
}
details.doc-section > summary::-webkit-details-marker { display: none; }
details.doc-section > summary h2 { margin: 0; flex: 1 1 auto; }
details.doc-section[open] > summary { margin-bottom: 12px; }
details.doc-section > summary::after {
  content: ""; flex: 0 0 auto; width: 9px; height: 9px;
  border-right: 2px solid var(--gold-deep); border-bottom: 2px solid var(--gold-deep);
  transform: rotate(45deg); /* 收起状态：向下箭头，提示可展开 */
  transition: transform 0.15s ease;
}
details.doc-section[open] > summary::after { transform: rotate(-135deg); }

.doc-note {
  background: var(--ivory); border-left: 3px solid var(--gold);
  border-radius: 8px; padding: 12px 16px; margin: 12px 0;
  font-size: 14.5px; color: var(--navy-800);
}
.doc-warn {
  background: #FBF1EC; border-left: 3px solid #B4552D;
  border-radius: 8px; padding: 12px 16px; margin: 12px 0;
  font-size: 14.5px; color: #6E3418;
}

/* 表格（章程费用等） */
.doc-table { width: 100%; border-collapse: collapse; margin: 10px 0; font-size: 15px; }
.doc-table th, .doc-table td {
  border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top;
}
.doc-table th { background: var(--ivory); color: var(--navy-900); font-weight: 700; }

/* 确认区（登记说明页） */
.confirm-box {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 24px; margin: 24px 0; box-shadow: var(--shadow);
}
.confirm-box label {
  display: flex; gap: 10px; align-items: flex-start; cursor: pointer;
  font-size: 15px; line-height: 1.7;
}
.confirm-box input[type="checkbox"] {
  width: 20px; height: 20px; margin-top: 3px; flex: 0 0 20px;
  accent-color: var(--navy-800);
}
.confirm-target { color: var(--muted); font-size: 13.5px; margin: 14px 0 10px; }
.confirm-target b { color: var(--navy-800); overflow-wrap: anywhere; word-break: break-all; }

.btn {
  display: inline-block; text-decoration: none; border-radius: 12px;
  padding: 13px 26px; font-size: 16px; font-weight: 700; letter-spacing: 0.5px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn--gold {
  background: linear-gradient(160deg, var(--gold-lt), var(--gold));
  color: var(--navy-950); box-shadow: 0 6px 18px rgba(197, 161, 91, 0.35);
}
.btn--gold:hover { transform: translateY(-1px); }
.btn--disabled, .btn[aria-disabled="true"] {
  background: #D8DCE1; color: #8A929C; box-shadow: none;
  pointer-events: none; transform: none;
}
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 6px; }
.btn--ghost {
  border: 1px solid var(--line); color: var(--navy-800); background: var(--white);
}

/* 页脚 */
.doc-footer {
  background: linear-gradient(160deg, var(--navy-950), var(--navy-900));
  color: #B9C4D6; padding: 28px 20px; text-align: center; font-size: 13.5px;
}
.doc-footer__links { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: center; margin-bottom: 12px; }
.doc-footer__links a { color: var(--gold-lt); text-decoration: none; }
.doc-footer__links a:hover { text-decoration: underline; }
.doc-footer p { margin: 4px 0; }

@media (max-width: 480px) {
  .doc-main { padding: 28px 14px 48px; }
  .doc-topbar__inner { padding: 0 14px; }
}