/* ============================================================
   澳门金手指 · 全站共享样式表  /assets/site.css
   1 重置  2 变量  3 中文排版  4 容器与章节  5 按钮
   6 页头  7 页脚  8 通用组件  9 动效  10 响应式与可达性
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background: #0B1220;
}

html[data-elder="on"] { font-size: 125%; }

body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
input, select, textarea { font: inherit; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2 设计变量 ---------- */
:root {
  --gold: #D4AF37;
  --gold-bright: #F6E7B0;
  --gold-dim: #8C6B22;
  --night: #0B1220;
  --night-2: #16203A;
  --night-3: #101A30;
  --red: #7C1420;
  --jade: #0F6B4F;
  --ivory: #F7F3E8;
  --muted: #9AA3B8;

  --gold-veil: rgba(212, 175, 55, .12);
  --gold-line: rgba(212, 175, 55, .24);
  --gold-line-strong: rgba(212, 175, 55, .55);
  --rule: rgba(154, 163, 184, .2);
  --text-soft: rgba(247, 243, 232, .8);
  --text-faint: rgba(247, 243, 232, .66);

  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --shell: min(1200px, 90vw);
  --pad-block: clamp(3.2rem, 7vw, 6.5rem);
  --gap: clamp(1.1rem, 2.4vw, 2rem);

  --radius-organic: 22px 8px 26px 10px;
  --radius-pill: 999px;

  --shadow-deep: 0 20px 46px rgba(0, 0, 0, .5);
  --shadow-gold: 0 12px 28px rgba(212, 175, 55, .2);
  --nav-break: 960px;
}

/* ---------- 3 中文排版 ---------- */
body {
  min-height: 100vh;
  overflow-x: hidden;
  background-color: var(--night);
  background-image:
    radial-gradient(1100px 560px at 84% -6%, rgba(212, 175, 55, .10), transparent 64%),
    radial-gradient(900px 520px at 6% 2%, rgba(124, 20, 32, .22), transparent 68%);
  background-repeat: no-repeat;
  color: var(--ivory);
  font-family: var(--font-sans);
  font-size: 1.125rem;
  font-weight: 400;
  line-height: 1.85;
  letter-spacing: .01em;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.32;
  letter-spacing: .02em;
  color: var(--ivory);
}

p { max-width: 40em; }

.prose { font-size: 1.125rem; }
.prose p { max-width: 34em; margin-bottom: 1.1em; }
.prose p:last-child { margin-bottom: 0; }
.prose h2 { margin: 2.6rem 0 1rem; font-size: clamp(1.5rem, 2.6vw, 2rem); }
.prose h3 { margin: 1.9rem 0 .8rem; font-size: clamp(1.2rem, 2vw, 1.45rem); }
.prose strong { color: var(--gold-bright); font-weight: 700; }
.prose a { color: var(--gold-bright); border-bottom: 1px solid rgba(212, 175, 55, .5); }
.prose a:hover { border-color: var(--gold); }
.prose ul { max-width: 34em; margin: 0 0 1.2em; }
.prose ul li { position: relative; margin-bottom: .55em; padding-left: 1.2em; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .82em;
  width: .38em;
  height: .38em;
  border-radius: 50%;
  background: var(--gold);
}

.vertical-note {
  writing-mode: vertical-rl;
  font-size: .8rem;
  letter-spacing: .42em;
  color: var(--muted);
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

#main-content { scroll-margin-top: 8.5rem; }

/* ---------- 4 容器与章节 ---------- */
.shell { width: var(--shell); margin-inline: auto; }

.section {
  position: relative;
  padding: var(--pad-block) 0;
}

.section--band {
  background: linear-gradient(180deg, rgba(22, 32, 58, .92), rgba(22, 32, 58, .34));
  border-top: 1px solid rgba(212, 175, 55, .12);
  border-bottom: 1px solid rgba(212, 175, 55, .12);
}

.section--veil {
  background: linear-gradient(180deg, rgba(212, 175, 55, .08), rgba(212, 175, 55, 0));
}

.section-head { max-width: 46rem; }

.section-head__index {
  display: block;
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .26em;
  color: var(--gold);
  margin-bottom: .75rem;
}

.section-head__title {
  font-size: clamp(1.75rem, 3.6vw, 2.9rem);
  letter-spacing: .03em;
}

.section-head__title::after {
  content: "";
  display: block;
  width: 4.6rem;
  height: 2px;
  margin-top: 1.1rem;
  background: linear-gradient(90deg, var(--gold), rgba(212, 175, 55, 0));
}

.section-head__lead {
  margin-top: 1.1rem;
  color: var(--text-soft);
  max-width: 34em;
}

.grid { display: grid; gap: var(--gap); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--index { grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); }

/* ---------- 5 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 48px;
  padding: .8rem 1.7rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: 1rem;
  letter-spacing: .14em;
  transition: transform .22s ease, background-color .24s ease, color .24s ease, border-color .24s ease;
}

.btn--gold {
  background: linear-gradient(140deg, #EBD270, #D4AF37 55%, #A9862A);
  color: #17120A;
  font-weight: 700;
  box-shadow: var(--shadow-gold);
}

.btn--gold:hover { transform: translateY(-2px); }

.btn--ghost {
  border-color: var(--gold-line-strong);
  background: var(--gold-veil);
  color: var(--gold-bright);
}

.btn--ghost:hover {
  background: rgba(212, 175, 55, .2);
  border-color: var(--gold);
  transform: translateY(-2px);
}

.btn:focus-visible { outline: 2px solid var(--gold-bright); outline-offset: 3px; }

/* ---------- 6 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 70;
  background: linear-gradient(180deg, rgba(11, 18, 32, .98), rgba(11, 18, 32, .9));
  border-bottom: 1px solid rgba(212, 175, 55, .22);
}

@supports (backdrop-filter: blur(6px)) {
  .site-header { backdrop-filter: blur(10px); }
}

.skip-link {
  position: absolute;
  left: 50%;
  top: 0;
  z-index: 120;
  transform: translate(-50%, -140%);
  padding: .7rem 1.4rem;
  border-radius: 0 0 12px 12px;
  background: var(--gold);
  color: #17120A;
  font-weight: 700;
  letter-spacing: .08em;
  transition: transform .22s ease;
}

.skip-link:focus { transform: translate(-50%, 0); }

/* 刊头 */
.masthead {
  position: relative;
  width: var(--shell);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(.8rem, 2.4vw, 2rem);
  padding: clamp(1rem, 2.2vw, 1.85rem) 0 clamp(.85rem, 1.8vw, 1.15rem);
  transition: padding .3s ease;
}

.masthead::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1.6px 1.6px at 16% 32%, rgba(246, 231, 176, .85), transparent 62%),
    radial-gradient(1.2px 1.2px at 39% 74%, rgba(246, 231, 176, .6), transparent 62%),
    radial-gradient(1.8px 1.8px at 64% 26%, rgba(246, 231, 176, .7), transparent 62%),
    radial-gradient(1.2px 1.2px at 84% 68%, rgba(246, 231, 176, .55), transparent 62%);
  opacity: .75;
}

.masthead__rule {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-line-strong));
  transition: opacity .28s ease;
}

.masthead__rule--right { background: linear-gradient(270deg, transparent, var(--gold-line-strong)); }

.masthead__block { text-align: center; }

.masthead__brand {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.2vw, 2.4rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: .3em;
  text-indent: .3em;
  background: linear-gradient(180deg, #F6E7B0, #D4AF37 58%, #8C6B22);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  transition: font-size .3s ease, letter-spacing .3s ease;
}

.masthead__sub {
  margin-top: .4rem;
  font-size: .75rem;
  letter-spacing: .42em;
  text-indent: .42em;
  color: #A9B3C9;
  transition: opacity .26s ease, visibility .26s ease;
}

/* 滚动收窄 */
.site-header[data-stuck="true"] .masthead { padding-top: .5rem; padding-bottom: .45rem; }
.site-header[data-stuck="true"] .masthead__brand { font-size: clamp(1.1rem, 2vw, 1.4rem); letter-spacing: .24em; }
.site-header[data-stuck="true"] .masthead__sub { opacity: 0; visibility: hidden; }
.site-header[data-stuck="true"] .masthead__rule { opacity: 0; }

/* 导航条 */
.nav-band {
  position: relative;
  background: linear-gradient(90deg, rgba(22, 32, 58, 0), rgba(22, 32, 58, .88) 16%, rgba(22, 32, 58, .88) 84%, rgba(22, 32, 58, 0));
  border-top: 1px solid rgba(212, 175, 55, .16);
  border-bottom: 1px solid rgba(212, 175, 55, .16);
}

.nav-band__inner {
  position: relative;
  width: var(--shell);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 3.3rem;
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(.4rem, 2.4vw, 2.4rem);
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: .85rem .35rem;
  font-size: 1.0625rem;
  letter-spacing: .16em;
  color: rgba(247, 243, 232, .84);
  transition: color .2s ease;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: .42rem;
  width: 0;
  height: 2px;
  background: var(--gold);
  transform: translateX(-50%);
  transition: width .28s ease;
}

.site-nav__link:hover,
.site-nav__link:focus-visible { color: var(--gold-bright); }

.site-nav__link:hover::after { width: 62%; background: rgba(212, 175, 55, .7); }

.site-nav__link[aria-current="page"] { color: var(--gold); }

.site-nav__link[aria-current="page"]::after { width: 78%; }

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: .6rem;
  min-height: 48px;
  min-width: 48px;
  padding: .5rem 1rem;
  border: 1px solid var(--gold-line-strong);
  border-radius: var(--radius-pill);
  color: var(--gold);
  font-size: .95rem;
  letter-spacing: .16em;
}

.nav-toggle__icon {
  position: relative;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: background-color .2s ease;
}

.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform .26s ease;
}

.nav-toggle__icon::before { top: -6px; }
.nav-toggle__icon::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__icon { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after { transform: translateY(-6px) rotate(-45deg); }

/* 阅读进度 */
.read-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  transform: scaleX(var(--progress, 0));
  transform-origin: left center;
  background: linear-gradient(90deg, #8C6B22, #D4AF37 42%, #F6E7B0);
  pointer-events: none;
}

/* 浮动快捷抽屉 */
.quick-drawer {
  position: fixed;
  right: clamp(.85rem, 3vw, 2rem);
  bottom: clamp(.9rem, 3vw, 2rem);
  z-index: 90;
  display: flex;
  flex-direction: column-reverse;
  align-items: flex-end;
  gap: .7rem;
}

.quick-drawer__scrim {
  position: fixed;
  inset: 0;
  z-index: 1;
  background: rgba(11, 18, 32, .62);
  opacity: 0;
  visibility: hidden;
  transition: opacity .26s ease, visibility .26s linear;
}

.quick-drawer__scrim[data-open] { opacity: 1; visibility: visible; }

.quick-drawer__trigger {
  position: relative;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  min-height: 48px;
  padding: .65rem 1.2rem;
  border: 1px solid rgba(212, 175, 55, .5);
  border-radius: var(--radius-pill);
  background: linear-gradient(140deg, #1B2742, #0D1526);
  color: var(--gold-bright);
  font-size: .95rem;
  letter-spacing: .14em;
  box-shadow: var(--shadow-deep);
  transition: transform .22s ease, border-color .22s ease;
}

.quick-drawer__trigger:hover { transform: translateY(-2px); border-color: var(--gold); }

.quick-drawer__glyph { font-size: .7rem; color: var(--gold); }

.quick-drawer__panel {
  position: relative;
  z-index: 3;
  width: min(17rem, 78vw);
  padding: 1.1rem 1.15rem 1.2rem;
  border: 1px solid rgba(212, 175, 55, .34);
  border-radius: 18px 6px 20px 8px;
  background: linear-gradient(165deg, #141F38, #0B1220);
  box-shadow: 0 22px 48px rgba(0, 0, 0, .55);
  transform: translateY(12px) scale(.97);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .24s ease, transform .24s ease, visibility .24s linear;
}

.quick-drawer__panel[data-open] {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.quick-drawer__title {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .24em;
  color: var(--gold);
  margin-bottom: .7rem;
}

.quick-drawer__list { margin-bottom: .9rem; }

.quick-drawer__link {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: .3rem .2rem;
  font-size: 1rem;
  letter-spacing: .1em;
  color: var(--text-soft);
  border-bottom: 1px solid rgba(212, 175, 55, .14);
  transition: color .2s ease, padding-left .2s ease;
}

.quick-drawer__link:hover,
.quick-drawer__link:focus-visible {
  color: var(--gold-bright);
  padding-left: .5rem;
}

.quick-drawer__elder {
  width: 100%;
  min-height: 48px;
  margin-top: .9rem;
  border: 1px dashed rgba(212, 175, 55, .45);
  border-radius: 12px;
  color: var(--gold-bright);
  font-size: .92rem;
  letter-spacing: .12em;
  background: rgba(212, 175, 55, .07);
}

.quick-drawer__elder[aria-pressed="true"] {
  background: rgba(15, 107, 79, .35);
  border-color: rgba(15, 107, 79, .9);
  color: #C9F2E1;
}

/* ---------- 7 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(4rem, 10vw, 8rem);
  background: linear-gradient(180deg, #0B1220, #101A30 46%, #16203A);
  border-top: 1px solid rgba(212, 175, 55, .28);
  color: var(--text-soft);
  font-size: 1rem;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, .85), transparent);
}

.footer-top {
  width: var(--shell);
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(13rem, 1fr) 2.2fr;
  gap: clamp(1.8rem, 4vw, 4rem);
  padding: clamp(2.6rem, 6vw, 4.4rem) 0 clamp(1.8rem, 4vw, 2.6rem);
}

.footer-identity__name {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: .24em;
  color: var(--gold);
}

.footer-identity__note {
  margin-top: .4rem;
  font-size: .78rem;
  letter-spacing: .34em;
  color: #A9B3C9;
}

.footer-identity__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin-top: 1.3rem;
  padding: .7rem 1.5rem;
  border: 1px solid var(--gold-line-strong);
  border-radius: var(--radius-pill);
  color: var(--gold-bright);
  font-size: .95rem;
  letter-spacing: .16em;
  transition: background-color .24s ease, border-color .24s ease;
}

.footer-identity__cta:hover,
.footer-identity__cta:focus-visible {
  background: rgba(212, 175, 55, .14);
  border-color: var(--gold);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(9rem, 1fr));
  gap: clamp(1.2rem, 3vw, 2.4rem);
}

.footer-col__title {
  margin-bottom: .9rem;
  font-family: var(--font-sans);
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .3em;
  color: rgba(212, 175, 55, .75);
}

.footer-col__list li { margin-bottom: .5rem; }

.footer-col__list a {
  padding-bottom: .1rem;
  font-size: 1rem;
  letter-spacing: .06em;
  color: rgba(247, 243, 232, .8);
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

.footer-col__list a:hover,
.footer-col__list a:focus-visible {
  color: var(--gold-bright);
  border-color: rgba(212, 175, 55, .6);
}

.footer-meta {
  width: var(--shell);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 1.4rem;
  padding: clamp(1.4rem, 3vw, 2rem) 0;
  border-top: 1px solid rgba(212, 175, 55, .16);
}

.footer-service {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem 2.2rem;
}

.footer-service__item {
  font-size: .95rem;
  color: var(--text-soft);
}

.footer-service__label {
  margin-right: .7rem;
  font-size: .78rem;
  letter-spacing: .22em;
  color: rgba(212, 175, 55, .85);
}

.footer-service__value { color: var(--ivory); }

.footer-legal {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  text-align: right;
  font-size: .9rem;
  color: #A9B3C9;
}

.footer-legal__icp { font-family: var(--font-mono); letter-spacing: .06em; }
.footer-legal__year { color: rgba(212, 175, 55, .8); }

.footer-base {
  width: var(--shell);
  margin-inline: auto;
  padding: 1.3rem 0 2.3rem;
  border-top: 1px solid rgba(212, 175, 55, .16);
  text-align: center;
}

.footer-signature {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  letter-spacing: .24em;
  color: rgba(212, 175, 55, .82);
  max-width: none;
}

/* ---------- 8 通用组件 ---------- */
/* 面包屑 */
.breadcrumb {
  width: var(--shell);
  margin-inline: auto;
  padding: 1.4rem 0 .3rem;
  font-size: .9rem;
  color: #A9B3C9;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .35rem;
}

.breadcrumb li { display: inline-flex; align-items: center; gap: .35rem; }

.breadcrumb li + li::before {
  content: "／";
  color: rgba(212, 175, 55, .5);
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible { color: var(--gold-bright); }

/* 索引卡片 */
.index-card {
  position: relative;
  padding: 1.4rem 1.3rem 1.5rem;
  border: 1px solid rgba(212, 175, 55, .2);
  border-radius: var(--radius-organic);
  background: linear-gradient(160deg, rgba(22, 32, 58, .92), rgba(11, 18, 32, .6));
  transition: transform .26s ease, border-color .26s ease, background-color .26s ease;
}

.index-card:hover {
  transform: translateY(-4px);
  border-color: rgba(212, 175, 55, .5);
}

.index-card__code {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .2em;
  color: var(--gold);
}

.index-card__title {
  margin-top: .5rem;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: .04em;
}

.index-card__text {
  margin-top: .55rem;
  font-size: 1rem;
  color: var(--text-faint);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .25rem .8rem;
  border: 1px solid rgba(212, 175, 55, .42);
  border-radius: var(--radius-pill);
  background: rgba(212, 175, 55, .1);
  color: var(--gold-bright);
  font-size: .8rem;
  letter-spacing: .12em;
}

.tag--season {
  border-color: rgba(124, 20, 32, .95);
  background: rgba(124, 20, 32, .55);
  color: #F7E4D2;
}

.tag--ready {
  border-color: rgba(15, 107, 79, .95);
  background: rgba(15, 107, 79, .4);
  color: #C9F2E1;
}

.tag--muted {
  border-color: rgba(154, 163, 184, .4);
  background: rgba(154, 163, 184, .12);
  color: #C9D0E0;
}

/* 图片容器 */
.frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid rgba(212, 175, 55, .24);
  border-radius: 24px 8px 26px 10px;
  background: linear-gradient(140deg, #101A30, #0B1220);
}

.frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 58%, rgba(11, 18, 32, .6));
}

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

.frame--wide { aspect-ratio: 21 / 9; }
.frame--portrait { aspect-ratio: 4 / 5; }

.frame__caption {
  max-width: 34em;
  margin-top: .7rem;
  font-size: .85rem;
  letter-spacing: .04em;
  color: #A9B3C9;
}

/* 右侧锚点轨道 */
.anchor-rail {
  position: sticky;
  top: 9rem;
  display: flex;
  flex-direction: column;
  gap: .8rem;
  font-size: .95rem;
}

.anchor-rail__link {
  padding-left: .9rem;
  border-left: 2px solid rgba(212, 175, 55, .22);
  color: var(--text-faint);
  transition: color .22s ease, border-color .22s ease, padding-left .22s ease;
}

.anchor-rail__link:hover,
.anchor-rail__link:focus-visible { color: var(--gold-bright); border-color: rgba(212, 175, 55, .6); }

.anchor-rail__link[aria-current="true"] {
  color: var(--gold);
  border-color: var(--gold);
  padding-left: 1.2rem;
}

/* 折叠问答 */
.fold { border-bottom: 1px solid rgba(212, 175, 55, .16); }

.fold__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  min-height: 56px;
  padding: 1rem .2rem;
  text-align: left;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  letter-spacing: .02em;
  color: var(--ivory);
  transition: color .2s ease;
}

.fold__trigger::after {
  content: "＋";
  font-family: var(--font-sans);
  font-size: 1.15rem;
  color: var(--gold);
  transition: transform .24s ease;
}

.fold__trigger[aria-expanded="true"] { color: var(--gold-bright); }
.fold__trigger[aria-expanded="true"]::after { content: "－"; }

.fold__panel {
  padding: 0 .2rem 1.4rem;
  color: var(--text-soft);
  font-size: 1rem;
}

.fold__panel[hidden] { display: none; }

/* ---------- 9 动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s ease, transform .6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@keyframes goldDrift {
  0% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(0, -4px, 0); }
  100% { transform: translate3d(0, 0, 0); }
}

@media (prefers-reduced-motion: no-preference) {
  .masthead::after { animation: goldDrift 14s ease-in-out infinite; }
}

/* ---------- 10 响应式与可达性 ---------- */
:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (max-width: 1024px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 840px) {
  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .footer-links { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-meta { grid-template-columns: minmax(0, 1fr); }
  .footer-legal { text-align: left; }
}

@media (max-width: 960px) {
  .nav-band__inner { justify-content: space-between; min-height: 3.2rem; }
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 6;
    padding: .35rem 0 .9rem;
    background: linear-gradient(180deg, #111C33, #0B1220);
    border-bottom: 1px solid rgba(212, 175, 55, .38);
    box-shadow: 0 26px 44px rgba(0, 0, 0, .5);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity .26s ease, transform .26s ease, visibility .26s linear;
  }

  .site-nav[data-open] {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__list li { border-bottom: 1px solid rgba(212, 175, 55, .14); }
  .site-nav__list li:last-child { border-bottom: 0; }

  .site-nav__link {
    display: flex;
    align-items: center;
    min-height: 54px;
    padding: .55rem 1.4rem;
    letter-spacing: .2em;
  }

  .site-nav__link::after { display: none; }

  .site-nav__link[aria-current="page"] {
    background: rgba(212, 175, 55, .09);
    box-shadow: inset 3px 0 0 var(--gold);
  }

  .site-nav__link:hover { background: rgba(212, 175, 55, .06); }
}

@media (max-width: 720px) {
  .grid--2,
  .grid--3,
  .grid--index { grid-template-columns: minmax(0, 1fr); }

  .footer-links { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem; }
  .quick-drawer__word { display: none; }
  .quick-drawer__trigger { padding: .65rem .95rem; }
}

@media (max-width: 640px) {
  body { font-size: 1.0625rem; }

  .masthead {
    grid-template-columns: minmax(0, 1fr);
    padding: .95rem 0 .75rem;
  }

  .masthead__rule { display: none; }

  .masthead__brand {
    font-size: 1.5rem;
    letter-spacing: .22em;
    text-indent: .22em;
  }

  .masthead__sub { font-size: .7rem; letter-spacing: .3em; text-indent: .3em; }

  .nav-band__inner { min-height: 3rem; }
  .nav-toggle__text { display: none; }

  .quick-drawer {
    right: .85rem;
    bottom: .9rem;
  }

  .footer-base { padding-bottom: 5.2rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  .reveal { opacity: 1; transform: none; }
}