/* =========================================================
   38娱乐会馆 · 共享样式表 /assets/site.css
   档案室 × 校对台：切角面板、索引轨、轨迹线
   ========================================================= */

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

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

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, figure, blockquote, dl, dd, dt {
  margin: 0;
}

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

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: 0;
  cursor: pointer;
}

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

table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩 */
  --ink-900: #071A2C;
  --ink-800: #0F2A44;
  --ink-700: #163853;
  --ink-500: #2A5C82;
  --amber: #E0A63C;
  --amber-soft: #F3CE86;
  --signal: #FF7A45;
  --sage: #7E9C93;
  --paper: #F3EFE6;
  --paper-line: #D8D2C4;
  --steel: #93A8BC;
  --paper-ink: #1B2430;

  /* 字体 */
  --font-display: "Arial Narrow", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", "SimSun", Georgia, serif;
  --font-body: "Songti SC", "STSong", "Noto Serif SC", "SimSun", Georgia, serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  /* 字号阶梯 1.0 / 1.25 / 1.56 / 1.95 / 2.44 */
  --step-0: 1rem;
  --step-1: 1.25rem;
  --step-2: 1.5625rem;
  --step-3: 1.953rem;
  --step-4: 2.441rem;

  /* 骨架 */
  --shell: 1280px;
  --gut: clamp(16px, 3.4vw, 40px);
  --cut: 14px;
  --radius: 4px;

  /* 动效 */
  --dur: 240ms;
  --ease: cubic-bezier(0.22, 0.68, 0.28, 1);
}

/* ---------- 3. 基底与中文排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink-900);
  background-image:
    radial-gradient(1200px 620px at 10% -10%, rgba(42, 92, 130, 0.34), transparent 62%),
    radial-gradient(900px 520px at 94% 2%, rgba(224, 166, 60, 0.10), transparent 58%);
  background-repeat: no-repeat;
  background-attachment: fixed;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.85;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: 0.005em;
  color: var(--paper);
}

h1 { font-size: var(--step-4); }
h2 { font-size: var(--step-2); }
h3 { font-size: var(--step-1); }
h4 { font-size: var(--step-0); }

p { max-width: 78ch; }

strong { font-weight: 700; color: var(--amber-soft); }
em { font-style: normal; color: var(--sage); }

main { display: block; }

:focus-visible {
  outline: 2px solid var(--amber-soft);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection {
  background: var(--amber);
  color: var(--ink-900);
}

/* ---------- 4. Skip link ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 300;
  padding: 10px 18px;
  background: var(--amber);
  color: var(--ink-900);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  border-radius: var(--radius);
  transform: translateY(-180%);
  transition: transform var(--dur) var(--ease);
}

.skip-link:focus-visible,
.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 5. 头部：悬浮胶囊 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  padding: 12px var(--gut) 14px;
  background: linear-gradient(180deg, rgba(7, 26, 44, 0.94) 0%, rgba(7, 26, 44, 0.66) 58%, rgba(7, 26, 44, 0) 100%);
}

.capsule {
  position: relative;
  max-width: var(--shell);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.4vw, 22px);
  padding: 9px clamp(12px, 1.6vw, 20px);
  background: rgba(15, 42, 68, 0.94);
  border: 1px solid var(--ink-500);
  border-radius: 999px;
  box-shadow: 0 20px 44px rgba(2, 10, 20, 0.55);
  backdrop-filter: blur(12px);
  transition: padding var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.site-header[data-condensed="true"] .capsule {
  padding-top: 6px;
  padding-bottom: 6px;
  background: rgba(15, 42, 68, 0.98);
  border-color: rgba(42, 92, 130, 0.9);
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  border-radius: 999px;
}

.brand-seal {
  display: grid;
  place-items: center;
  flex: none;
  width: 38px;
  height: 38px;
  background: linear-gradient(150deg, var(--amber), var(--amber-soft));
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 0.94rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  color: var(--paper);
  line-height: 1.25;
}

.brand-tagline {
  display: block;
  height: 1.15em;
  line-height: 1.15em;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--steel);
  overflow: hidden;
  opacity: 1;
  transition: opacity var(--dur) var(--ease), height var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.site-header[data-condensed="true"] .brand-tagline {
  opacity: 0;
  height: 0;
  transform: translateY(-4px);
}

/* 导航 */
.site-nav { margin-left: auto; }

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(2px, 0.5vw, 6px);
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 12px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.09em;
  color: var(--steel);
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.nav-link:hover {
  color: var(--paper);
  background: rgba(42, 92, 130, 0.34);
}

.nav-link[aria-current="page"] {
  color: var(--amber);
  background: rgba(224, 166, 60, 0.1);
  box-shadow: inset 0 0 0 1px rgba(224, 166, 60, 0.45);
}

/* 头部工具 */
.header-tools {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  flex: none;
}

.search-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--ink-500);
  border-radius: 999px;
  color: var(--steel);
  font-family: var(--font-display);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.search-toggle:hover,
.search-toggle[aria-expanded="true"] {
  color: var(--amber);
  border-color: var(--amber);
  background: rgba(224, 166, 60, 0.08);
}

.search-toggle-icon {
  position: relative;
  width: 12px;
  height: 12px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
  flex: none;
}

.search-toggle-icon::after {
  content: "";
  position: absolute;
  right: -4px;
  bottom: -3px;
  width: 6px;
  height: 1.5px;
  background: currentColor;
  transform: rotate(45deg);
}

.header-cta {
  font-size: 0.82rem;
  padding: 0 16px;
}

/* 导航开关 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--ink-500);
  border-radius: 999px;
  color: var(--steel);
  font-family: var(--font-display);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.nav-toggle-box {
  display: grid;
  gap: 4px;
  width: 16px;
}

.nav-toggle-box span {
  display: block;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.nav-toggle[aria-expanded="true"] {
  color: var(--amber);
  border-color: var(--amber);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

/* 检索面板 */
.search-panel {
  max-width: var(--shell);
  margin: 10px auto 0;
  background: var(--ink-800);
  border: 1px solid var(--ink-500);
  border-radius: 20px;
  padding: 18px clamp(16px, 2vw, 26px);
  box-shadow: 0 26px 54px rgba(2, 10, 20, 0.62);
}

.search-panel[hidden] { display: none; }

.search-panel__inner { max-width: 760px; }

.search-field { display: block; }

.search-field__label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  color: var(--amber);
}

.search-field__input {
  width: 100%;
  padding: 12px 14px;
  background: var(--ink-900);
  border: 1px solid var(--ink-500);
  border-radius: 6px;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: border-color var(--dur) var(--ease);
}

.search-field__input::placeholder {
  color: rgba(147, 168, 188, 0.72);
  font-family: var(--font-body);
  letter-spacing: 0.02em;
}

.search-field__input:focus-visible {
  border-color: var(--amber);
  outline-offset: 2px;
}

.search-panel__hint {
  margin-top: 10px;
  font-size: 0.82rem;
  color: var(--steel);
  max-width: 62ch;
}

.search-routes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.search-routes a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  background: rgba(42, 92, 130, 0.28);
  border: 1px solid var(--ink-500);
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--paper);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.search-routes a:hover {
  color: var(--amber);
  border-color: var(--amber);
  background: rgba(224, 166, 60, 0.1);
}

.search-panel__empty {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--signal);
}

.search-panel__empty[hidden] { display: none; }

/* ---------- 6. 页脚 ---------- */
.site-footer {
  margin-top: clamp(48px, 7vw, 96px);
  background: var(--ink-800);
  border-top: 1px solid var(--ink-500);
  color: var(--steel);
  font-size: 0.92rem;
}

.footer-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(32px, 5vw, 58px) var(--gut) clamp(20px, 3vw, 34px);
  display: grid;
  gap: clamp(24px, 3vw, 46px);
  grid-template-columns: minmax(200px, 1.1fr) minmax(0, 2.2fr) minmax(230px, 1.3fr);
  align-items: start;
}

.footer-brand__link {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 1.24rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--paper);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--amber);
}

.footer-brand__line {
  margin-top: 14px;
  font-size: 0.86rem;
  letter-spacing: 0.14em;
  color: var(--sage);
}

.footer-brand__meta {
  margin-top: 12px;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--steel);
  max-width: 34ch;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}

.footer-col__title,
.footer-contact__title {
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px dashed rgba(42, 92, 130, 0.85);
  font-family: var(--font-display);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--amber);
}

.footer-col__list {
  display: grid;
  gap: 8px;
}

.footer-col__link {
  display: inline-block;
  font-size: 0.88rem;
  color: var(--steel);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.footer-col__link::before {
  content: "—";
  margin-right: 6px;
  color: var(--ink-500);
}

.footer-col__link:hover {
  color: var(--paper);
  transform: translateX(3px);
}

.footer-contact__list {
  display: grid;
  gap: 10px;
}

.footer-contact__row {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--sage);
}

.footer-contact__val {
  color: var(--paper);
  font-size: 0.9rem;
  word-break: break-word;
  line-height: 1.6;
}

.footer-contact__note {
  margin-top: 12px;
  font-size: 0.82rem;
  line-height: 1.75;
  color: var(--steel);
  max-width: 40ch;
}

.footer-legal {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 14px var(--gut) 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 24px;
  border-top: 1px solid rgba(42, 92, 130, 0.6);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--steel);
}

.footer-legal__item { max-width: none; }

.footer-version {
  margin-left: auto;
  color: var(--sage);
  max-width: none;
}

.footer-rule {
  height: 4px;
  border-top: 1px solid rgba(42, 92, 130, 0.75);
  background-image: repeating-linear-gradient(90deg, rgba(224, 166, 60, 0.9) 0 2px, transparent 2px 48px);
  background-repeat: repeat-x;
  background-size: auto 3px;
  opacity: 0.85;
}

.progress-rail {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  z-index: 150;
  background: rgba(42, 92, 130, 0.35);
  pointer-events: none;
}

.progress-rail__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--amber), var(--signal));
  transition: width 120ms linear;
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  white-space: nowrap;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.btn--amber {
  background: var(--amber);
  color: var(--ink-900);
}

.btn--amber:hover {
  background: var(--amber-soft);
  transform: translateY(-1px);
}

.btn--ghost {
  border-color: var(--ink-500);
  color: var(--paper);
}

.btn--ghost:hover {
  border-color: var(--amber);
  color: var(--amber);
  transform: translateY(-1px);
}

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

.btn--paper:hover {
  background: #ffffff;
  transform: translateY(-1px);
}

/* ---------- 8. 面包屑 ---------- */
.crumbs {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--steel);
}

.crumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0 6px;
}

.crumbs__item {
  display: inline-flex;
  align-items: center;
}

.crumbs__item::after {
  content: "/";
  margin-left: 6px;
  color: var(--ink-500);
}

.crumbs__item:last-child::after { content: ""; }

.crumbs__link { transition: color var(--dur) var(--ease); }

.crumbs__link:hover { color: var(--amber); }

.crumbs__item[aria-current="page"] { color: var(--amber); }

/* ---------- 9. 骨架与网格 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-inline: var(--gut);
}

.layout-rail {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 9fr) minmax(0, 1fr);
  gap: clamp(18px, 2.4vw, 36px);
  align-items: start;
}

.rail {
  position: sticky;
  top: 108px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 14px;
  border-left: 1px solid var(--ink-500);
}

.rail__item {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--steel);
  padding: 5px 0;
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.rail__item::before {
  content: attr(data-index);
  margin-right: 8px;
  color: var(--ink-500);
}

.rail__item:hover { color: var(--paper); transform: translateX(2px); }

.rail__item.is-active {
  color: var(--amber);
  transform: translateX(2px);
}

.rail__item.is-active::before { color: var(--amber); }

.grid {
  display: grid;
  gap: clamp(14px, 2vw, 26px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--collage { grid-template-columns: repeat(6, minmax(0, 1fr)); }

.grid--span2 { grid-column: span 2; }
.grid--span3 { grid-column: span 3; }
.grid--span4 { grid-column: span 4; }
.grid--span6 { grid-column: span 6; }

/* ---------- 10. 通用组件 ---------- */
.card {
  position: relative;
  background: var(--ink-800);
  border: 1px solid var(--ink-500);
  padding: clamp(16px, 2vw, 26px);
  clip-path: polygon(
    var(--cut) 0,
    100% 0,
    100% calc(100% - var(--cut)),
    calc(100% - var(--cut)) 100%,
    0 100%,
    0 var(--cut)
  );
}

.card--paper {
  background: var(--paper);
  border-color: var(--paper-line);
  color: var(--paper-ink);
}

.card--paper h1,
.card--paper h2,
.card--paper h3,
.card--paper h4 { color: var(--paper-ink); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  margin-bottom: clamp(16px, 2vw, 26px);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ink-500);
}

.section-head__index {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.section-head__title {
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 700;
  color: var(--paper);
  letter-spacing: 0.01em;
}

.section-head__note {
  font-size: 0.86rem;
  color: var(--steel);
  max-width: none;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.meta {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--steel);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid var(--ink-500);
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--steel);
  white-space: nowrap;
}

.tag--amber {
  border-color: rgba(224, 166, 60, 0.5);
  background: rgba(224, 166, 60, 0.1);
  color: var(--amber);
}

.tag--sage {
  border-color: rgba(126, 156, 147, 0.55);
  background: rgba(126, 156, 147, 0.12);
  color: var(--sage);
}

.tag--signal {
  border-color: rgba(255, 122, 69, 0.5);
  background: rgba(255, 122, 69, 0.1);
  color: var(--signal);
}

.entry {
  border-top: 1px solid var(--ink-500);
  padding: clamp(14px, 1.8vw, 22px) 0;
}

.entry.is-hidden,
.entry[hidden] { display: none !important; }

.entry__title {
  font-family: var(--font-serif);
  font-size: var(--step-1);
  line-height: 1.5;
  color: var(--paper);
}

.entry__body {
  margin-top: 8px;
  color: rgba(243, 239, 230, 0.86);
  font-size: 0.96rem;
}

.entry__meta { margin-top: 10px; }

.copy {
  max-width: 72ch;
  color: rgba(243, 239, 230, 0.92);
}

.copy p { max-width: none; }
.copy p + p { margin-top: 0.9em; }

.copy--paper {
  background: var(--paper);
  border: 1px solid var(--paper-line);
  color: var(--paper-ink);
  padding: clamp(20px, 3vw, 40px);
}

.copy--paper h1,
.copy--paper h2,
.copy--paper h3 { color: var(--paper-ink); }

.copy--paper a {
  color: #8a5a10;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 11. 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background: var(--ink-700);
  border: 1px solid var(--ink-500);
  clip-path: polygon(
    var(--cut) 0,
    100% 0,
    100% calc(100% - var(--cut)),
    calc(100% - var(--cut)) 100%,
    0 100%,
    0 var(--cut)
  );
}

.media-frame > img,
.media-frame > svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.86) contrast(1.06);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(0deg, rgba(243, 239, 230, 0.05) 0 1px, transparent 1px 3px);
  mix-blend-mode: screen;
}

.media-frame--1x1 { aspect-ratio: 1 / 1; }
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 14px 10px;
  background: linear-gradient(0deg, rgba(7, 26, 44, 0.92), rgba(7, 26, 44, 0));
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--paper);
  z-index: 1;
}

/* ---------- 12. 横向轨迹带 ---------- */
.ticker {
  overflow-x: auto;
  overflow-y: hidden;
  border-top: 1px solid var(--ink-500);
  border-bottom: 1px solid var(--ink-500);
  background: var(--ink-800);
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.ticker__track {
  display: flex;
  gap: clamp(12px, 1.6vw, 22px);
  padding: 16px var(--gut);
  min-width: max-content;
}

.ticker__item {
  scroll-snap-align: start;
  min-width: 200px;
  padding: 12px 16px;
  border-left: 2px solid var(--amber);
  background: var(--ink-700);
}

/* ---------- 13. 表格 ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--ink-500);
  background: var(--ink-800);
}

.table {
  min-width: 640px;
  font-size: 0.9rem;
}

.table th,
.table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid rgba(42, 92, 130, 0.7);
  vertical-align: top;
}

.table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--ink-700);
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--amber);
  white-space: nowrap;
}

.table__pin {
  position: sticky;
  left: 0;
  background: var(--ink-800);
  z-index: 1;
}

/* ---------- 14. 显现与状态 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 300ms var(--ease), transform 300ms var(--ease);
}

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

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1180px) {
  .footer-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
  .footer-nav { grid-column: 1 / -1; }
}

@media (max-width: 980px) {
  .capsule {
    flex-wrap: wrap;
    border-radius: 24px;
    padding: 10px 14px;
    gap: 10px;
  }

  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    margin: 0;
    padding: 12px;
    background: rgba(15, 42, 68, 0.99);
    border: 1px solid var(--ink-500);
    border-radius: 20px;
    box-shadow: 0 28px 60px rgba(2, 10, 20, 0.66);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur) var(--ease);
  }

  .site-nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-link {
    justify-content: flex-start;
    min-height: 48px;
    padding: 0 14px;
    border-radius: 12px;
    font-size: 0.95rem;
    letter-spacing: 0.1em;
  }

  .nav-link[aria-current="page"] {
    box-shadow: inset 3px 0 0 0 var(--amber);
    border-radius: 0 12px 12px 0;
  }

  .layout-rail {
    grid-template-columns: minmax(0, 1fr);
  }

  .rail {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px 16px;
    padding-left: 0;
    padding-bottom: 12px;
    border-left: 0;
    border-bottom: 1px solid var(--ink-500);
  }
}

@media (max-width: 760px) {
  .header-cta { display: none; }
  .search-toggle-text { display: none; }
  .search-toggle { padding: 0 15px; }

  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }

  .grid--span2,
  .grid--span3,
  .grid--span4 { grid-column: span 6; }

  .footer-inner { grid-template-columns: minmax(0, 1fr); }
  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-version { margin-left: 0; }
  .footer-contact__row { grid-template-columns: 42px minmax(0, 1fr); }
  .media-frame__caption { font-size: 0.66rem; }
}

@media (max-width: 480px) {
  .brand-tagline { display: none; }
  .footer-nav { grid-template-columns: minmax(0, 1fr); }
  .footer-legal { font-size: 0.7rem; }
}

/* ---------- 16. 减少动态效果 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

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

  .progress-rail__bar { transition: none; }
}