/* ============================================================
   永兴集团 · 共享样式 /assets/site.css
   档案册式编辑部版式：居中刊头 / 非对称网格 / 连续画布
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body,
h1, h2, h3, h4, h5, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }

ul, ol { padding: 0; list-style: none; }

img, svg { display: block; max-width: 100%; }

button { font: inherit; color: inherit; background: none; border: 0; }

a { color: inherit; text-decoration: none; }

table { border-collapse: collapse; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-navy: #1B2A5B;
  --navy-deep: #0F1B3D;
  --navy-link: #34508F;
  --signal-cyan: #2E9E9B;
  --sand-gold: #C8A25C;
  --sand-light: #F0E3C8;
  --paper: #FAF7F0;
  --paper-alt: #F1EDE4;
  --text-ink: #2B2B2B;
  --text-muted: #6B6F76;
  --line: #DCD6C9;

  --font-serif: "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", "STSong", "SimSun", Georgia, serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;

  --fs-body: 16px;
  --max-w: 1280px;
  --gutter: 24px;
  --radius-soft: 14px;
  --shadow-lift: 0 8px 24px rgba(15, 27, 61, 0.08);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

@media (min-width: 768px) {
  :root { --gutter: 40px; --fs-body: 17px; }
}

/* ---------- 3. 基础排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--text-ink);
  background-color: var(--paper);
  background-image: repeating-linear-gradient(180deg, rgba(27, 42, 91, 0.028) 0 1px, transparent 1px 96px);
}

h1, h2, h3, h4 { color: var(--ink-navy); }

h1, .h1 {
  font-family: var(--font-serif);
  font-size: clamp(30px, 4.4vw, 48px);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.28;
}

h2, .h2 {
  font-family: var(--font-serif);
  font-size: clamp(24px, 2.6vw, 30px);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.38;
}

h3, .h3 {
  font-family: var(--font-serif);
  font-size: clamp(18px, 1.6vw, 21px);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.5;
}

h4, .h4 {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

p + p { margin-top: 1.2em; }

a:hover { color: var(--navy-link); }

strong { font-weight: 600; color: var(--ink-navy); }

::selection { background: var(--sand-light); color: var(--ink-navy); }

/* ---------- 4. 布局容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 32px;
}

.col-aside { grid-column: 1 / span 3; min-width: 0; }
.col-main { grid-column: 4 / span 9; min-width: 0; }

@media (max-width: 1000px) {
  .grid-12 { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .col-aside, .col-main { grid-column: auto; }
}

/* ---------- 5. 跳转链与进度条 ---------- */
.skip-link {
  position: absolute;
  left: 50%;
  top: -80px;
  transform: translateX(-50%);
  z-index: 120;
  padding: 12px 22px;
  background: var(--ink-navy);
  color: var(--paper);
  font-size: 14px;
  letter-spacing: 0.08em;
  border-radius: 0 0 3px 3px;
  transition: top 0.18s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible { top: 0; color: var(--paper); }

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 90;
  pointer-events: none;
  background: transparent;
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--ink-navy) 0%, var(--signal-cyan) 62%, var(--sand-gold) 100%);
  transition: width 0.08s linear;
}

/* ---------- 6. 刊头 ---------- */
.site-header {
  position: relative;
  z-index: 40;
  background-color: var(--paper);
  border-bottom: 1px solid var(--line);
}

.site-header__ruler {
  height: 10px;
  border-bottom: 1px solid var(--line);
  background-image:
    repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 8px),
    repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 40px);
  background-size: 100% 4px, 100% 9px;
  background-position: left bottom, left bottom;
  background-repeat: repeat-x, repeat-x;
}

.masthead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: end;
  gap: 24px;
  padding-block: 30px 22px;
}

.masthead__note {
  justify-self: start;
  max-width: 220px;
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.masthead__brand {
  justify-self: center;
  display: block;
  text-align: center;
  padding-inline: 12px;
}

.masthead__name {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 700;
  letter-spacing: 0.24em;
  text-indent: 0.24em;
  line-height: 1.15;
  color: var(--ink-navy);
}

.masthead__tagline {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.3em;
  text-indent: 0.3em;
  color: var(--text-muted);
}

.masthead__actions {
  justify-self: end;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid var(--ink-navy);
  border-radius: 2px;
  background: transparent;
  color: var(--ink-navy);
  font-size: 14px;
  line-height: 1;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease),
              border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.btn:hover { transform: translateY(-2px); color: var(--ink-navy); }

.btn--solid {
  background: var(--ink-navy);
  border-color: var(--ink-navy);
  color: var(--paper);
}

.btn--solid:hover {
  background: var(--navy-link);
  border-color: var(--navy-link);
  color: var(--paper);
}

.btn--ghost { background: transparent; color: var(--ink-navy); }

.btn--ghost:hover { background: var(--sand-light); }

/* ---------- 8. 栏目导航 ---------- */
.site-nav {
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.site-nav__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  min-height: 58px;
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 34px;
}

.site-nav__item { display: block; }

.site-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 12px 2px;
  border-bottom: 2px solid transparent;
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--text-ink);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease),
              background-color 0.18s var(--ease);
}

.site-nav__link:hover {
  color: var(--navy-link);
  border-bottom-color: var(--sand-gold);
}

.site-nav__link[aria-current="page"] {
  color: var(--ink-navy);
  font-weight: 600;
  border-bottom-color: var(--ink-navy);
}

.site-nav__num {
  font-family: var(--font-serif);
  font-size: 11px;
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--sand-gold);
  font-variant-numeric: tabular-nums;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--ink-navy);
  font-size: 14px;
  letter-spacing: 0.16em;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.nav-toggle:hover { background: var(--sand-light); border-color: var(--sand-gold); }

.nav-toggle__label { line-height: 1; }

.nav-toggle__icon {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
}

.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform 0.18s var(--ease);
}

.nav-toggle__icon::before { top: 0; }
.nav-toggle__icon::after { bottom: 0; }

.site-nav[data-open] .nav-toggle__icon::before { transform: translateY(5px) rotate(45deg); }
.site-nav[data-open] .nav-toggle__icon::after { transform: translateY(-5px) rotate(-45deg); }

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }

  .site-nav__inner {
    flex-direction: column;
    align-items: stretch;
    padding-block: 12px;
  }

  .nav-toggle { align-self: flex-start; }

  .site-nav__list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-top: 12px;
    border-top: 1px solid var(--line);
  }

  .site-nav[data-open] .site-nav__list { display: flex; }

  .site-nav__link {
    width: 100%;
    padding: 14px 2px;
    border-bottom: 1px solid var(--line);
    border-left: 3px solid transparent;
  }

  .site-nav__link:hover { border-bottom-color: var(--line); }

  .site-nav__link[aria-current="page"] {
    border-bottom-color: var(--line);
    border-left-color: var(--ink-navy);
    padding-left: 12px;
    background: var(--paper-alt);
  }
}

@media (max-width: 900px) {
  .masthead {
    grid-template-columns: minmax(0, 1fr);
    justify-items: center;
    gap: 14px;
    padding-block: 26px 22px;
  }

  .masthead__brand { order: 1; }
  .masthead__note { order: 2; justify-self: center; text-align: center; max-width: none; }
  .masthead__actions { order: 3; justify-self: center; }
}

/* ---------- 9. 分区与区块头 ---------- */
.section { padding-block: clamp(56px, 8vw, 118px); }

.section--sand { background: var(--sand-light); }
.section--alt { background: var(--paper-alt); }

.section--ink {
  background: var(--navy-deep);
  color: #E8E4DA;
}

.section--ink h1,
.section--ink h2,
.section--ink h3 { color: #FFFFFF; }

.section__kicker {
  display: inline-block;
  margin-bottom: 14px;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--sand-gold);
  font-variant-numeric: tabular-nums;
}

.section__title { max-width: 22ch; }

.section__note {
  max-width: 40ch;
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.8;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.section--ink .section__note { color: rgba(232, 228, 218, 0.76); }

/* ---------- 10. 索引侧栏 ---------- */
.index-nav {
  position: sticky;
  top: 24px;
  font-size: 13px;
}

.index-nav__title {
  margin-bottom: 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--text-muted);
}

.index-nav__list { border-left: 1px solid var(--line); }

.index-nav__link {
  display: block;
  margin-left: -1px;
  padding: 9px 0 9px 14px;
  border-left: 2px solid transparent;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease),
              background-color 0.18s var(--ease);
}

.index-nav__link:hover { color: var(--navy-link); background: var(--paper-alt); }

.index-nav__link[aria-current="true"] {
  color: var(--ink-navy);
  font-weight: 600;
  border-left-color: var(--sand-gold);
  background: var(--paper-alt);
}

/* ---------- 11. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-block: 18px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.breadcrumb__item { display: inline-flex; align-items: center; gap: 10px; }

.breadcrumb__sep { color: var(--line); }

.breadcrumb__link { border-bottom: 1px solid transparent; }

.breadcrumb__link:hover { border-bottom-color: var(--sand-gold); color: var(--navy-link); }

/* ---------- 12. 通用元件 ---------- */
.annotation {
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.numeral {
  font-family: var(--font-serif);
  font-size: clamp(30px, 3.6vw, 52px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--ink-navy);
  font-variant-numeric: tabular-nums;
}

.rule-dashed {
  border: 0;
  border-top: 1px dashed var(--line);
  margin-block: 26px;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--signal-cyan);
}

.status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--signal-cyan);
}

.stamp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 68px;
  height: 68px;
  border: 1px solid var(--sand-gold);
  border-radius: 50%;
  font-family: var(--font-serif);
  font-size: 24px;
  line-height: 1;
  color: var(--sand-gold);
  transform: rotate(-7deg);
  transition: transform 0.2s var(--ease);
}

.stamp:hover { transform: rotate(-7deg) scale(1.03); }

.media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-soft);
  background: var(--paper-alt);
}

.media--wide { aspect-ratio: 16 / 9; }
.media--tall { aspect-ratio: 4 / 5; }

.media:not(.media--wide):not(.media--tall) { aspect-ratio: 4 / 3; }

.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.ledger-wrap { overflow-x: auto; }

.ledger {
  width: 100%;
  min-width: 560px;
  font-size: 15px;
  font-variant-numeric: tabular-nums;
}

.ledger caption {
  padding-bottom: 12px;
  text-align: left;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.ledger th,
.ledger td {
  padding: 13px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.ledger thead th {
  background: var(--ink-navy);
  color: var(--paper);
  font-weight: 600;
  letter-spacing: 0.08em;
  border-bottom-color: var(--ink-navy);
}

.ledger tbody tr:nth-child(even) { background: var(--sand-light); }

.fold { border-top: 1px solid var(--line); }

.fold:last-of-type { border-bottom: 1px solid var(--line); }

.fold__summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--ink-navy);
  transition: background-color 0.18s var(--ease);
}

.fold__summary::-webkit-details-marker { display: none; }

.fold__summary::after {
  content: "＋";
  flex: none;
  font-size: 15px;
  color: var(--sand-gold);
}

.fold[open] .fold__summary::after { content: "－"; }

.fold__summary:hover { background: var(--paper-alt); }

.fold__body {
  padding: 0 2px 24px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-ink);
}

/* ---------- 13. 页脚 ---------- */
.site-footer {
  background: var(--navy-deep);
  color: #E8E4DA;
}

.site-footer__ruler {
  height: 12px;
  border-bottom: 1px solid rgba(200, 162, 92, 0.28);
  background-image:
    repeating-linear-gradient(90deg, rgba(200, 162, 92, 0.55) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, rgba(200, 162, 92, 0.3) 0 1px, transparent 1px 96px);
  background-size: 100% 6px, 100% 11px;
  background-position: left bottom, left bottom;
  background-repeat: repeat-x, repeat-x;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: 48px;
  padding-block: 66px 52px;
}

.site-footer__brand { min-width: 0; }

.site-footer__mark {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.2em;
  line-height: 1.3;
  color: #FFFFFF;
}

.site-footer__slogan {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.8;
  letter-spacing: 0.08em;
  color: rgba(232, 228, 218, 0.82);
}

.site-footer__hours {
  margin-top: 16px;
  padding-left: 12px;
  border-left: 2px solid var(--sand-gold);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: rgba(232, 228, 218, 0.7);
}

.site-footer__seal {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 62px;
  height: 62px;
  margin-top: 22px;
  border: 1px solid var(--sand-gold);
  border-radius: 50%;
  font-family: var(--font-serif);
  font-size: 22px;
  line-height: 1;
  color: var(--sand-gold);
  transform: rotate(-7deg);
}

.site-footer__col { min-width: 0; }

.site-footer__title {
  margin-bottom: 16px;
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--sand-gold);
}

.footer-list li + li { margin-top: 11px; }

.footer-list a {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: #E8E4DA;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.footer-list a:hover {
  color: #FFFFFF;
  border-bottom-color: var(--sand-gold);
}

.site-footer__contact { min-width: 0; }

.footer-contact__line {
  font-size: 14px;
  line-height: 1.9;
  letter-spacing: 0.04em;
  color: rgba(232, 228, 218, 0.82);
  word-break: break-word;
}

.footer-contact__line + .footer-contact__line { margin-top: 12px; }

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  padding-block: 20px 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: rgba(232, 228, 218, 0.66);
}

@media (max-width: 1000px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    padding-block: 52px 40px;
  }
}

@media (max-width: 620px) {
  .site-footer__grid { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .site-footer__seal { width: 54px; height: 54px; font-size: 20px; }
}

/* ---------- 14. 显现与状态 ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.2s ease-out, transform 0.2s ease-out;
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 15. 键盘焦点 ---------- */
:focus-visible {
  outline: 2px solid var(--sand-gold);
  outline-offset: 2px;
  border-radius: 1px;
}

a:focus-visible,
button:focus-visible { outline: 2px solid var(--sand-gold); outline-offset: 2px; }

/* ---------- 16. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .js [data-reveal] { opacity: 1; transform: none; }

  .btn:hover,
  .stamp:hover { transform: none; }
}