/* ==========================================================================
   问鼎PG · 鼎器档案库 —— 共享外壳样式表 /assets/site.css
   墨鼎蓝打底 + 蓝图网格 + 切角面板 + 轨道导航
   ========================================================================== */

/* ---------- 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, figcaption, blockquote, dl, dd { margin: 0; }

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

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

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

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

table { border-collapse: collapse; }

:focus-visible {
  outline: 2px solid #E6BC72;
  outline-offset: 3px;
}

/* ---------- 变量 ---------- */
:root {
  --ink: #0B1A2B;
  --deep: #12293F;
  --paper: #F4EFE6;
  --celadon: #8C9E9B;
  --bronze: #C08A3E;
  --bronze-lit: #E6BC72;
  --cinnabar: #B7362F;
  --line: #2E4A61;
  --jade: #4E8C86;
  --shadow-ink: #050F1A;

  --rail-w: 96px;
  --masthead-h: 96px;
  --quota-h: 44px;
  --shell-top: calc(var(--masthead-h) + var(--quota-h));

  --gutter: 64px;
  --col-gap: 24px;

  --font-head: "Songti SC", "SimSun", "Source Han Serif SC", "Noto Serif SC", "STSong", Georgia, serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 180ms;
}

/* ---------- 基面 ---------- */
body {
  min-height: 100vh;
  padding-left: var(--rail-w);
  padding-top: var(--shell-top);
  background-color: var(--ink);
  background-image:
    linear-gradient(to right, rgba(46, 74, 97, 0.42) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46, 74, 97, 0.42) 1px, transparent 1px);
  background-size: 24px 24px, 24px 24px;
  background-attachment: fixed;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
}

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

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  position: fixed;
  inset: 0;
  z-index: 110;
  pointer-events: none;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 210;
  pointer-events: auto;
  display: inline-block;
  padding: 10px 18px;
  background: var(--bronze-lit);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transform: translateY(-220%);
  transition: transform var(--dur) var(--ease);
}

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

/* ---------- 侧边轨道 ---------- */
.rail {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 4;
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 18px 8px 20px;
  border-right: 1px solid var(--line);
  background-color: var(--ink);
  background-image:
    repeating-linear-gradient(45deg, rgba(192, 138, 62, 0.07) 0 1px, transparent 1px 9px),
    linear-gradient(180deg, var(--shadow-ink) 0%, var(--ink) 32%, var(--deep) 100%);
  overflow-y: auto;
  overflow-x: hidden;
}

.rail-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.rail-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--bronze-lit);
  border: 1px solid var(--bronze);
  background: linear-gradient(160deg, rgba(192, 138, 62, 0.24), rgba(183, 54, 47, 0.12));
  clip-path: polygon(0 9px, 9px 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
}

.rail-brand-text {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--paper);
  white-space: nowrap;
}

.rail-status {
  font-size: 10px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  text-align: center;
  color: var(--celadon);
}

.rail-quota { display: none; }

.rail-nav {
  width: 100%;
  flex: 1 1 auto;
}

.rail-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rail-link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 10px 4px 10px 6px;
  border-left: 2px solid transparent;
  color: var(--celadon);
  transition:
    color var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.rail-link:hover {
  color: var(--paper);
  background: rgba(192, 138, 62, 0.12);
  border-left-color: var(--bronze-lit);
}

.rail-link[aria-current="page"] {
  color: var(--paper);
  background: linear-gradient(90deg, rgba(183, 54, 47, 0.34), rgba(183, 54, 47, 0));
  border-left-color: var(--cinnabar);
}

.rail-index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--bronze);
}

.rail-link[aria-current="page"] .rail-index {
  color: var(--bronze-lit);
}

.rail-label {
  font-size: 13px;
  line-height: 1.25;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.rail-foot {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.rail-foot-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--jade);
  box-shadow: 0 0 0 3px rgba(78, 140, 134, 0.22);
}

.rail-foot-note {
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--celadon);
  white-space: nowrap;
}

/* ---------- 页头右半区 ---------- */
.topbar {
  position: absolute;
  left: var(--rail-w);
  right: 0;
  top: 0;
  z-index: 2;
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  background: rgba(11, 26, 43, 0.94);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.masthead {
  display: grid;
  grid-template-columns: auto minmax(240px, 1fr) auto auto;
  align-items: center;
  gap: 28px;
  height: var(--masthead-h);
  padding: 0 var(--gutter);
  border-bottom: 1px solid rgba(46, 74, 97, 0.6);
  overflow: hidden;
}

/* 品牌铭牌 */
.brand-plate {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  place-items: center;
  flex: none;
  width: 40px;
  height: 40px;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  color: var(--bronze-lit);
  border: 1px solid var(--bronze);
  background: linear-gradient(160deg, rgba(192, 138, 62, 0.22), rgba(183, 54, 47, 0.1));
  clip-path: polygon(0 8px, 8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--paper);
  white-space: nowrap;
}

.brand-sub {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--bronze);
  white-space: nowrap;
}

.brand-status {
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: var(--celadon);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 检索入口 */
.search-slot {
  position: relative;
  width: 100%;
  max-width: 460px;
  justify-self: start;
}

.search-trigger {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  height: 44px;
  padding: 0 12px 0 14px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 41, 63, 0.92), rgba(11, 26, 43, 0.92));
  color: var(--celadon);
  font-size: 14px;
  text-align: left;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.search-trigger:hover,
.search-trigger[aria-expanded="true"] {
  border-color: var(--bronze);
  color: var(--paper);
}

.search-glyph {
  position: relative;
  flex: none;
  width: 13px;
  height: 13px;
  border: 2px solid var(--bronze);
  border-radius: 50%;
}

.search-glyph::after {
  content: "";
  position: absolute;
  right: -6px;
  bottom: -3px;
  width: 8px;
  height: 2px;
  background: var(--bronze);
  transform: rotate(45deg);
}

.search-text {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.search-key {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--bronze);
  border: 1px solid rgba(192, 138, 62, 0.55);
  padding: 2px 6px;
}

.suggest-panel {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 10px);
  z-index: 40;
  padding: 14px 0 8px;
  background: var(--deep);
  border: 1px solid var(--bronze);
  box-shadow: 0 26px 54px -22px var(--shadow-ink);
}

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

.suggest-label {
  padding: 0 18px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--bronze);
  border-bottom: 1px solid rgba(46, 74, 97, 0.8);
}

.suggest-list { padding-top: 6px; }

.suggest-link {
  display: block;
  padding: 10px 18px 10px 16px;
  font-size: 14px;
  color: var(--paper);
  border-left: 2px solid transparent;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.suggest-link:hover,
.suggest-link:focus-visible {
  background: rgba(192, 138, 62, 0.14);
  border-left-color: var(--bronze-lit);
}

/* 快捷链接 */
.quick-links {
  display: flex;
  align-items: center;
  gap: 20px;
  white-space: nowrap;
}

.quick-link {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--celadon);
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(140, 158, 155, 0.35);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.quick-link:hover {
  color: var(--bronze-lit);
  border-bottom-color: var(--bronze-lit);
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: var(--deep);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: border-color var(--dur) var(--ease);
}

.nav-toggle:hover { border-color: var(--bronze-lit); }

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 20px;
  height: 2px;
  background: var(--bronze-lit);
  transition: background-color var(--dur) var(--ease);
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--bronze-lit);
  transition: transform var(--dur) var(--ease);
}

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

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

/* ---------- 额度横条 ---------- */
.quota-strip {
  position: relative;
  display: flex;
  align-items: center;
  gap: 18px;
  height: var(--quota-h);
  padding: 0 var(--gutter);
  background: linear-gradient(90deg, rgba(183, 54, 47, 0.24), rgba(11, 26, 43, 0.35) 42%, rgba(11, 26, 43, 0.35));
  border-bottom: 1px solid var(--line);
}

.quota-strip::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--cinnabar);
}

.quota-lead {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: rgba(244, 239, 230, 0.86);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.quota-key {
  display: inline-block;
  margin-right: 10px;
  padding: 1px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--bronze-lit);
  border: 1px solid rgba(192, 138, 62, 0.6);
}

.quota-toggle {
  flex: none;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--bronze-lit);
  border-bottom: 1px dashed rgba(230, 188, 114, 0.6);
  padding-bottom: 1px;
  transition: color var(--dur) var(--ease);
}

.quota-toggle:hover { color: var(--paper); }

.quota-detail {
  position: absolute;
  left: var(--gutter);
  right: var(--gutter);
  top: 100%;
  z-index: 45;
  margin-top: 1px;
  padding: 18px 22px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px 24px;
  background: var(--deep);
  border: 1px solid var(--bronze);
  box-shadow: 0 30px 60px -26px var(--shadow-ink);
}

.quota-detail[hidden] { display: none; }

.quota-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: 10px;
  border-left: 2px solid rgba(192, 138, 62, 0.6);
}

.quota-name {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--paper);
}

.quota-num {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.1;
  letter-spacing: 0.06em;
  color: var(--bronze-lit);
}

.quota-note {
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--celadon);
}

/* ---------- 滚动进度 ---------- */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  pointer-events: none;
  z-index: 6;
  overflow: hidden;
}

.scroll-progress span {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--bronze), var(--bronze-lit) 58%, var(--cinnabar));
}

/* ---------- 抽屉遮罩 ---------- */
.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 3;
  background: rgba(5, 15, 26, 0.76);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 200ms var(--ease), visibility 200ms var(--ease);
}

.nav-scrim[data-open] {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  position: relative;
  margin-top: 96px;
  padding: 64px var(--gutter) 26px;
  background: linear-gradient(180deg, rgba(5, 15, 26, 0.9) 0%, var(--ink) 45%, #0A1524 100%);
  border-top: 1px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  left: var(--gutter);
  right: var(--gutter);
  top: -1px;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--bronze) 0 14px, transparent 14px 28px);
  opacity: 0.65;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(0, 1.7fr);
  gap: 48px 64px;
  max-width: 1360px;
  margin: 0 auto;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.footer-mark {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  font-family: var(--font-head);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--bronze-lit);
  border: 1px solid var(--bronze);
  background: linear-gradient(160deg, rgba(192, 138, 62, 0.22), rgba(183, 54, 47, 0.12));
  clip-path: polygon(0 10px, 10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.footer-brand-name {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--paper);
}

.footer-summary {
  max-width: 34em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--celadon);
}

.footer-snapshot {
  display: inline-block;
  margin-top: 4px;
  padding: 10px 16px;
  font-size: 13.5px;
  letter-spacing: 0.04em;
  color: var(--bronze-lit);
  border: 1px solid rgba(192, 138, 62, 0.6);
  background: rgba(192, 138, 62, 0.08);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.footer-snapshot:hover {
  background: rgba(192, 138, 62, 0.2);
  color: var(--paper);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--bronze);
  padding-left: 10px;
  border-left: 2px solid var(--bronze);
  line-height: 1.4;
}

.footer-col-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-link {
  font-size: 15px;
  color: rgba(244, 239, 230, 0.86);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.footer-link:hover {
  color: var(--bronze-lit);
  padding-left: 4px;
}

.footer-meta {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px 32px;
  padding-top: 28px;
  border-top: 1px solid rgba(46, 74, 97, 0.7);
}

.footer-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-meta-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--bronze);
}

.footer-meta-val {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 239, 230, 0.86);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  max-width: 1360px;
  margin: 36px auto 0;
  padding-top: 18px;
  border-top: 1px solid rgba(46, 74, 97, 0.55);
}

.footer-copy,
.footer-icp {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--celadon);
}

.footer-icp {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

/* ==========================================================================
   通用组件
   ========================================================================== */
.container {
  width: 100%;
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.prose {
  max-width: 68ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: rgba(244, 239, 230, 0.88);
}

.prose > * + * { margin-top: 1.1em; }

.prose h2 {
  font-family: var(--font-head);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.prose h3 {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--paper);
}

.prose a {
  color: var(--bronze-lit);
  border-bottom: 1px solid rgba(230, 188, 114, 0.5);
}

.prose strong { color: var(--paper); }

/* 面包屑 */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--celadon);
}

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

.breadcrumb li:not(:first-child)::before {
  content: "/";
  margin: 0 10px;
  color: var(--line);
}

.breadcrumb a {
  color: var(--celadon);
  border-bottom: 1px solid rgba(140, 158, 155, 0.35);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.breadcrumb a:hover {
  color: var(--bronze-lit);
  border-bottom-color: var(--bronze-lit);
}

.breadcrumb [aria-current="page"] {
  color: var(--bronze-lit);
}

/* 网格 */
.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--col-gap);
}

.col-4 { grid-column: span 4; }
.col-6 { grid-column: span 6; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

/* 分区 */
.section {
  position: relative;
  padding: 72px 0;
}

.section + .section {
  border-top: 1px solid rgba(46, 74, 97, 0.55);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 8px 20px;
  margin-bottom: 32px;
}

.section-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--bronze);
  padding-bottom: 4px;
}

.section-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(24px, 3vw, 32px);
  letter-spacing: 0.06em;
  line-height: 1.3;
  color: var(--paper);
}

.section-desc {
  width: 100%;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--celadon);
}

/* 卡片 */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(18, 41, 63, 0.92), rgba(11, 26, 43, 0.94));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 56px;
  height: 1px;
  background: var(--bronze);
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card-title {
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.4;
  color: var(--paper);
}

.card-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--bronze);
  padding-left: 8px;
  border-left: 2px solid var(--bronze);
}

.card-body {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.82);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 24px;
  padding: 0 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--celadon);
  border: 1px solid var(--line);
  background: rgba(18, 41, 63, 0.6);
}

.tag--gold { color: var(--bronze-lit); border-color: rgba(192, 138, 62, 0.6); }
.tag--green { color: var(--jade); border-color: rgba(78, 140, 134, 0.6); }
.tag--red { color: #E08A83; border-color: rgba(183, 54, 47, 0.6); }

/* 表格 */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  background: rgba(11, 26, 43, 0.62);
}

.data-table {
  width: 100%;
  min-width: 560px;
  font-size: 14.5px;
}

.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(46, 74, 97, 0.7);
}

.data-table th {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--bronze);
  background: rgba(18, 41, 63, 0.9);
  white-space: nowrap;
}

.data-table td {
  color: rgba(244, 239, 230, 0.85);
  line-height: 1.7;
}

.data-table tbody tr:hover { background: rgba(192, 138, 62, 0.07); }

.data-table .mono,
.data-table code {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--bronze-lit);
}

/* 按钮 */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  padding: 0 20px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  white-space: nowrap;
  color: var(--paper);
  border: 1px solid var(--line);
  background: rgba(18, 41, 63, 0.7);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition:
    background-color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.btn:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--bronze-lit);
}

.btn:hover {
  border-color: var(--bronze-lit);
  color: var(--bronze-lit);
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--cinnabar);
  border-color: var(--cinnabar);
  color: var(--paper);
}

.btn--primary:hover {
  background: #C9423A;
  border-color: var(--bronze-lit);
  color: var(--paper);
}

.btn--gold {
  background: rgba(192, 138, 62, 0.12);
  border-color: var(--bronze);
  color: var(--bronze-lit);
}

.btn--ghost {
  background: transparent;
}

/* 图片容器（页面阶段放置 <img> / <picture>） */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    repeating-linear-gradient(45deg, rgba(192, 138, 62, 0.06) 0 1px, transparent 1px 10px),
    linear-gradient(150deg, var(--deep), var(--shadow-ink));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.media-frame img,
.media-frame picture,
.media-frame > svg {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }

.media-caption {
  margin-top: 10px;
  padding-left: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--celadon);
  border-left: 2px solid var(--bronze);
}

/* 显现动效 */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}

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

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1279px) {
  :root { --gutter: 40px; }

  .quick-links { display: none; }
  .masthead { grid-template-columns: auto minmax(220px, 1fr) auto; gap: 20px; }
  .brand-status { display: none; }
  .footer-grid { grid-template-columns: minmax(240px, 1fr) minmax(0, 1.6fr); gap: 40px 48px; }
}

@media (max-width: 959px) {
  :root {
    --rail-w: 0px;
    --masthead-h: 112px;
    --quota-h: 0px;
    --gutter: 32px;
  }

  .rail {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: min(320px, 88vw);
    padding: 0 0 24px;
    align-items: stretch;
    gap: 0;
    z-index: 5;
    border-right: 1px solid var(--bronze);
    transform: translateX(-102%);
    transition: transform 240ms var(--ease);
    overflow-y: auto;
  }

  .rail[data-open] {
    transform: translateX(0);
    box-shadow: 28px 0 64px rgba(5, 15, 26, 0.72);
  }

  .rail-brand {
    flex-direction: row;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--line);
  }

  .rail-brand-text { font-size: 14px; letter-spacing: 0.1em; }

  .rail-status {
    padding: 12px 20px 0;
    text-align: left;
    font-size: 12px;
    line-height: 1.6;
  }

  .rail-quota {
    display: block;
    position: sticky;
    top: 0;
    z-index: 2;
    margin-top: 12px;
    padding: 11px 20px;
    font-size: 12.5px;
    letter-spacing: 0.05em;
    color: var(--paper);
    background: linear-gradient(90deg, rgba(183, 54, 47, 0.9), rgba(183, 54, 47, 0.35));
    border-top: 1px solid rgba(230, 188, 114, 0.4);
    border-bottom: 1px solid rgba(230, 188, 114, 0.4);
  }

  .rail-nav { margin-top: 14px; }
  .rail-list { gap: 0; }

  .rail-link {
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 14px;
    padding: 15px 20px;
    border-left: 3px solid transparent;
    border-bottom: 1px solid rgba(46, 74, 97, 0.45);
  }

  .rail-label { font-size: 15px; }
  .rail-index { font-size: 11px; }

  .rail-foot {
    margin-top: 24px;
    flex-direction: row;
    justify-content: flex-start;
    gap: 10px;
    padding: 0 20px;
  }

  .rail-foot-note { font-size: 11px; }

  .masthead {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "brand toggle"
      "search search";
    align-content: center;
    gap: 8px 12px;
    padding: 8px var(--gutter);
  }

  .brand-plate { grid-area: brand; }
  .search-slot { grid-area: search; max-width: none; }
  .nav-toggle { grid-area: toggle; display: inline-flex; }
  .masthead > .btn { display: none; }

  .brand-mark { width: 34px; height: 34px; font-size: 17px; }
  .brand-name { font-size: 17px; }
  .brand-sub { font-size: 10px; }

  .quota-strip { display: none; }

  .nav-scrim { z-index: 4; }

  body.is-nav-open { overflow: hidden; }

  .site-footer { margin-top: 64px; padding: 48px var(--gutter) 24px; }

  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 36px; }

  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }

  .footer-meta { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

  .section { padding: 52px 0; }

  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-4 { grid-column: span 6; }
  .col-6 { grid-column: span 6; }
  .col-8 { grid-column: span 6; }

  .media-frame--wide { aspect-ratio: 4 / 3; }
}

@media (max-width: 599px) {
  :root { --gutter: 20px; }

  .masthead { padding: 8px var(--gutter); }

  .search-key { display: none; }

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

  .footer-base { flex-direction: column; align-items: flex-start; }

  .media-frame--wide { aspect-ratio: 3 / 2; }
  .media-frame--tall { aspect-ratio: 4 / 5; }
}

/* ==========================================================================
   动效偏好
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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

  .rail { transition: none; }
}