/* =========================================================
   奥门皇8指南 · 共享站点皮肤 /assets/site.css
   Oasis Archive X —— 夜间档案绿洲
   ========================================================= */

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

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

ul, ol { list-style: none; }

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

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

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

:focus-visible {
  outline: 2px solid var(--oax-gold-light);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- 2. Tokens ---------- */
:root {
  --oax-ink: #0A1A2B;
  --oax-midnight: #102A44;
  --oax-archive: #1B3A57;
  --oax-deep: #04101B;
  --oax-gold: #D9A94C;
  --oax-gold-light: #F2CE84;
  --oax-coral: #EF6B45;
  --oax-jade: #6FB69E;
  --oax-cream: #F6F1E6;
  --oax-mist: #9FB0C0;
  --oax-paper: #EFE9DC;

  --oax-line: rgba(159, 176, 192, 0.18);
  --oax-line-strong: rgba(159, 176, 192, 0.34);
  --oax-glass: rgba(16, 42, 68, 0.62);
  --oax-glass-edge: rgba(242, 206, 132, 0.16);

  --oax-radius-sm: 4px;
  --oax-radius: 10px;
  --oax-radius-lg: 18px;

  --oax-rail-w: 240px;
  --oax-rail-w-tablet: 72px;
  --oax-max: 1280px;
  --oax-gutter: 24px;
  --oax-pad: clamp(20px, 4vw, 56px);

  --oax-font-head: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --oax-font-body: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --oax-font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, "Courier New", monospace;

  --oax-ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --oax-t-fast: 200ms;
  --oax-t-mid: 480ms;

  --oax-z-rail: 60;
  --oax-z-scrim: 55;
  --oax-z-topbar: 70;
  --oax-z-totop: 80;
  --oax-z-skip: 200;
}

/* ---------- 3. Base / 中文排版 ---------- */
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--oax-ink);
  background-image:
    radial-gradient(1100px 620px at 88% -8%, rgba(217, 169, 76, 0.10), transparent 62%),
    radial-gradient(900px 680px at 6% 104%, rgba(111, 182, 158, 0.08), transparent 60%),
    linear-gradient(178deg, #0A1A2B 0%, #081827 46%, #06121E 100%);
  background-attachment: fixed;
  color: var(--oax-cream);
  font-family: var(--oax-font-body);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.85;
  letter-spacing: 0.005em;
  padding-left: var(--oax-rail-w);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 噪点纹理层 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.035;
  background-image:
    repeating-linear-gradient(0deg, rgba(246, 241, 230, 0.6) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(246, 241, 230, 0.6) 0 1px, transparent 1px 4px);
  mix-blend-mode: overlay;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--oax-font-head);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--oax-cream);
  text-wrap: balance;
}

h1 { font-size: clamp(2.6rem, 6.4vw, 5.4rem); }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.9rem); }
h3 { font-size: clamp(1.35rem, 2.2vw, 1.85rem); line-height: 1.3; }
h4 { font-size: 1.15rem; letter-spacing: -0.01em; }

p { max-width: 38em; }
p + p { margin-top: 1.05em; }

strong { color: var(--oax-gold-light); font-weight: 700; }

::selection {
  background: rgba(217, 169, 76, 0.32);
  color: #fff;
}

/* ---------- 4. Skip link ---------- */
.oax-skip {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: var(--oax-z-skip);
  transform: translateY(-180%);
  padding: 12px 20px;
  background: var(--oax-gold);
  color: var(--oax-deep);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--oax-radius-sm);
  transition: transform var(--oax-t-fast) var(--oax-ease);
}

.oax-skip:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--oax-cream);
  outline-offset: 3px;
}

/* ---------- 5. Header / 轨道导航 ---------- */
.oax-header {
  position: static;
}

/* 移动端顶部条：桌面隐藏 */
.oax-topbar { display: none; }

/* --- 轨道 --- */
.oax-rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--oax-rail-w);
  z-index: var(--oax-z-rail);
  display: flex;
  flex-direction: column;
  background:
    linear-gradient(180deg, rgba(16, 42, 68, 0.92) 0%, rgba(10, 26, 43, 0.96) 62%, rgba(4, 16, 27, 0.98) 100%);
  border-right: 1px solid var(--oax-line);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  backdrop-filter: blur(14px) saturate(120%);
  overflow: hidden;
}

/* 轨道顶部聚光 */
.oax-rail::before {
  content: "";
  position: absolute;
  top: -120px;
  left: 50%;
  width: 300px;
  height: 300px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(242, 206, 132, 0.22), transparent 68%);
  pointer-events: none;
}

/* 轨道底部渐隐细线 */
.oax-rail::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 140px;
  background: linear-gradient(180deg, transparent, rgba(4, 16, 27, 0.9));
  pointer-events: none;
}

.oax-rail__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 22px;
  height: 100%;
  padding: 28px 22px 24px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--oax-archive) transparent;
}

.oax-rail__inner::-webkit-scrollbar { width: 4px; }
.oax-rail__inner::-webkit-scrollbar-thumb { background: var(--oax-archive); border-radius: 4px; }

.oax-rail__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--oax-line);
}

.oax-rail__mark {
  position: relative;
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--oax-gold-light), var(--oax-gold) 52%, #B3822F 100%);
  box-shadow: 0 0 0 1px rgba(242, 206, 132, 0.35), 0 6px 18px -6px rgba(217, 169, 76, 0.7);
}

.oax-rail__mark::after {
  content: "";
  position: absolute;
  inset: 6px 6px auto auto;
  width: 7px;
  height: 7px;
  background: var(--oax-ink);
  border-radius: 1px;
}

.oax-rail__name {
  font-family: var(--oax-font-head);
  font-size: 1.16rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--oax-cream);
  white-space: nowrap;
}

.oax-rail__tagline {
  max-width: none;
  font-size: 0.74rem;
  line-height: 1.4;
  color: var(--oax-mist);
  letter-spacing: 0.06em;
  min-height: 108px;
}

.oax-vert {
  display: inline-block;
  writing-mode: vertical-rl;
  text-orientation: upright;
  transform: rotate(180deg);
  letter-spacing: 0.22em;
  font-size: 0.7rem;
  color: rgba(159, 176, 192, 0.8);
}

/* --- 导航 --- */
.oax-nav-wrap { flex: 1 1 auto; }

.oax-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.oax-nav a {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 10px 11px 14px;
  border-radius: 0 var(--oax-radius-sm) var(--oax-radius-sm) 0;
  color: rgba(246, 241, 230, 0.78);
  font-size: 0.97rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: color var(--oax-t-fast) var(--oax-ease),
              background-color var(--oax-t-fast) var(--oax-ease),
              padding-left var(--oax-t-fast) var(--oax-ease);
}

.oax-nav a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 3px;
  height: 0;
  background: linear-gradient(180deg, var(--oax-gold-light), var(--oax-gold));
  border-radius: 0 2px 2px 0;
  transform: translateY(-50%);
  transition: height var(--oax-t-fast) var(--oax-ease);
}

.oax-nav a:hover {
  color: var(--oax-gold-light);
  background: rgba(242, 206, 132, 0.06);
}

.oax-nav a:hover::before { height: 22px; }

.oax-nav a:focus-visible {
  outline: 2px solid var(--oax-gold-light);
  outline-offset: 2px;
}

.oax-nav a[aria-current="page"] {
  color: var(--oax-gold-light);
  background: linear-gradient(90deg, rgba(217, 169, 76, 0.16), rgba(217, 169, 76, 0.02));
  font-weight: 700;
}

.oax-nav a[aria-current="page"]::before { height: 62%; }

.oax-nav__index {
  font-family: var(--oax-font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: rgba(159, 176, 192, 0.62);
  transition: color var(--oax-t-fast) var(--oax-ease);
}

.oax-nav a:hover .oax-nav__index,
.oax-nav a[aria-current="page"] .oax-nav__index { color: var(--oax-coral); }

.oax-nav__label { flex: 1 1 auto; }

/* --- 轨道底部 --- */
.oax-rail__actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--oax-line);
}

.oax-rail__cta {
  width: 100%;
  text-align: center;
  font-size: 0.88rem;
  padding: 12px 14px;
}

.oax-rail__meta {
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  color: rgba(159, 176, 192, 0.6);
  text-transform: uppercase;
  max-width: none;
}

/* --- 导航按钮（移动） --- */
.oax-nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 1px solid var(--oax-line-strong);
  border-radius: var(--oax-radius-sm);
  background: var(--oax-glass);
  color: var(--oax-cream);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: border-color var(--oax-t-fast) var(--oax-ease), color var(--oax-t-fast) var(--oax-ease);
}

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

.oax-nav-toggle__bars {
  position: relative;
  width: 16px;
  height: 10px;
}

.oax-nav-toggle__bars::before,
.oax-nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--oax-t-fast) var(--oax-ease), opacity var(--oax-t-fast) var(--oax-ease);
}

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

.oax-nav-toggle[aria-expanded="true"] .oax-nav-toggle__bars::before { transform: translateY(4px) rotate(45deg); }
.oax-nav-toggle[aria-expanded="true"] .oax-nav-toggle__bars::after { transform: translateY(-4px) rotate(-45deg); }

.oax-nav-toggle__label { font-weight: 600; }

/* --- 遮罩 --- */
.oax-rail__scrim {
  position: fixed;
  inset: 0;
  z-index: var(--oax-z-scrim);
  background: rgba(4, 16, 27, 0.72);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
}

.oax-rail__scrim[hidden] { display: none; }

/* --- 阅读进度 --- */
.oax-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: calc(var(--oax-z-rail) + 5);
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--oax-gold), var(--oax-coral));
  box-shadow: 0 0 12px rgba(217, 169, 76, 0.55);
  transition: width 120ms linear;
  pointer-events: none;
}

/* ---------- 6. 容器与栅格 ---------- */
.oax-container {
  width: 100%;
  max-width: var(--oax-max);
  margin-inline: auto;
  padding-inline: var(--oax-pad);
}

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

.oax-col-5 { grid-column: span 5; }
.oax-col-7 { grid-column: span 7; }
.oax-col-4 { grid-column: span 4; }
.oax-col-6 { grid-column: span 6; }
.oax-col-8 { grid-column: span 8; }
.oax-col-12 { grid-column: 1 / -1; }

.oax-offset-note {
  grid-column: span 3;
  margin-top: 56px;
  padding-left: 18px;
  border-left: 1px solid var(--oax-line-strong);
}

/* ---------- 7. 页面容器 ---------- */
.oax-page { padding-block: clamp(56px, 8vw, 104px) clamp(72px, 10vw, 128px); }

.oax-page__head {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--oax-gutter);
  align-items: end;
  padding-bottom: clamp(28px, 4vw, 48px);
  border-bottom: 1px solid var(--oax-line);
  margin-bottom: clamp(32px, 5vw, 64px);
}

.oax-page__head > * { grid-column: 1 / -1; }

.oax-page__body { max-width: 78ch; }

/* ---------- 8. 文本组件 ---------- */
.oax-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--oax-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--oax-gold);
}

.oax-eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
}

.oax-annotation {
  display: inline-block;
  font-family: var(--oax-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--oax-mist);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.oax-mono {
  font-family: var(--oax-font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--oax-mist);
  max-width: none;
}

.oax-lead {
  font-size: clamp(1.02rem, 1.4vw, 1.18rem);
  line-height: 1.8;
  color: rgba(246, 241, 230, 0.86);
  max-width: 36em;
}

/* ---------- 9. 按钮 ---------- */
.oax-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: var(--oax-radius-sm);
  font-family: var(--oax-font-head);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  transition: background-color var(--oax-t-fast) var(--oax-ease),
              color var(--oax-t-fast) var(--oax-ease),
              border-color var(--oax-t-fast) var(--oax-ease),
              box-shadow var(--oax-t-fast) var(--oax-ease),
              transform var(--oax-t-fast) var(--oax-ease);
}

.oax-btn--gold {
  background: linear-gradient(135deg, var(--oax-gold-light), var(--oax-gold) 58%, #C08F33 100%);
  color: #201503;
  box-shadow: 0 10px 26px -14px rgba(217, 169, 76, 0.85);
}

.oax-btn--gold:hover {
  box-shadow: 0 14px 30px -12px rgba(242, 206, 132, 0.7);
  transform: translateY(-1px);
}

.oax-btn--gold:active { transform: translateY(0); }

.oax-btn--ghost {
  background: transparent;
  color: var(--oax-cream);
  border-color: var(--oax-line-strong);
}

.oax-btn--ghost:hover {
  border-color: var(--oax-gold);
  color: var(--oax-gold-light);
  background: rgba(242, 206, 132, 0.07);
}

/* ---------- 10. 面包屑 ---------- */
.oax-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--oax-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: rgba(159, 176, 192, 0.72);
  margin-bottom: 22px;
}

.oax-breadcrumb li { display: inline-flex; align-items: center; gap: 8px; }

.oax-breadcrumb li + li::before {
  content: "/";
  color: rgba(159, 176, 192, 0.38);
}

.oax-breadcrumb a {
  color: rgba(159, 176, 192, 0.9);
  border-bottom: 1px solid transparent;
  transition: color var(--oax-t-fast) var(--oax-ease), border-color var(--oax-t-fast) var(--oax-ease);
}

.oax-breadcrumb a:hover { color: var(--oax-gold-light); border-bottom-color: var(--oax-gold); }

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

/* ---------- 11. 层与卡片 ---------- */
.oax-glass {
  background: var(--oax-glass);
  border: 1px solid var(--oax-glass-edge);
  border-radius: var(--oax-radius);
  -webkit-backdrop-filter: blur(16px) saturate(130%);
  backdrop-filter: blur(16px) saturate(130%);
  box-shadow: inset 0 1px 0 rgba(246, 241, 230, 0.07), 0 24px 48px -32px rgba(0, 0, 0, 0.9);
}

.oax-panel {
  background: linear-gradient(165deg, var(--oax-midnight), #0C2136 72%, #0A1B2C 100%);
  border: 1px solid var(--oax-line);
  border-radius: var(--oax-radius);
  padding: clamp(22px, 3vw, 34px);
}

.oax-card {
  position: relative;
  background: var(--oax-midnight);
  border: 1px solid var(--oax-line);
  border-radius: var(--oax-radius);
  padding: clamp(20px, 2.6vw, 30px);
  transition: border-color var(--oax-t-fast) var(--oax-ease),
              transform var(--oax-t-fast) var(--oax-ease),
              box-shadow var(--oax-t-fast) var(--oax-ease);
}

.oax-card:hover {
  border-color: rgba(217, 169, 76, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 22px 44px -30px rgba(0, 0, 0, 0.95);
}

.oax-card--coral { border-top: 2px solid var(--oax-coral); }
.oax-card--jade { border-top: 2px solid var(--oax-jade); }
.oax-card--gold { border-top: 2px solid var(--oax-gold); }

/* ---------- 12. 图片容器基础规则 ---------- */
.oax-figure {
  position: relative;
  margin: 0;
  border-radius: var(--oax-radius);
  overflow: hidden;
  background:
    linear-gradient(150deg, rgba(27, 58, 87, 0.9), rgba(10, 26, 43, 0.95)),
    repeating-linear-gradient(135deg, rgba(159, 176, 192, 0.08) 0 1px, transparent 1px 12px);
  border: 1px solid var(--oax-line);
  isolation: isolate;
}

.oax-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 78% 18%, rgba(217, 169, 76, 0.16), transparent 58%);
  pointer-events: none;
}

.oax-figure__media {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  background:
    linear-gradient(115deg, transparent 44%, rgba(242, 206, 132, 0.14) 45%, transparent 46%),
    linear-gradient(180deg, rgba(111, 182, 158, 0.12), transparent 62%);
}

.oax-figure__media img,
.oax-figure__media svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.oax-figure--wide .oax-figure__media { aspect-ratio: 21 / 9; }
.oax-figure--tall .oax-figure__media { aspect-ratio: 3 / 4; }
.oax-figure--square .oax-figure__media { aspect-ratio: 1 / 1; }

.oax-figure__caption {
  position: relative;
  z-index: 1;
  padding: 12px 16px;
  font-family: var(--oax-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--oax-mist);
  border-top: 1px solid var(--oax-line);
  background: rgba(4, 16, 27, 0.55);
}

/* ---------- 13. 标签筛选 ---------- */
.oax-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 15px;
  border: 1px solid var(--oax-line-strong);
  border-radius: 999px;
  background: rgba(16, 42, 68, 0.5);
  color: rgba(246, 241, 230, 0.8);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  transition: border-color var(--oax-t-fast) var(--oax-ease),
              color var(--oax-t-fast) var(--oax-ease),
              background-color var(--oax-t-fast) var(--oax-ease);
}

.oax-chip:hover {
  border-color: var(--oax-gold);
  color: var(--oax-gold-light);
}

.oax-chip[aria-pressed="true"] {
  background: rgba(217, 169, 76, 0.16);
  border-color: var(--oax-gold);
  color: var(--oax-gold-light);
  font-weight: 600;
}

.oax-chip[aria-pressed="true"]::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--oax-coral);
}

/* ---------- 14. 显现 / 返回顶部 ---------- */
.oax-reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--oax-t-mid) var(--oax-ease), transform var(--oax-t-mid) var(--oax-ease);
  will-change: opacity, transform;
}

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

.oax-totop {
  position: fixed;
  right: clamp(16px, 3vw, 34px);
  bottom: clamp(16px, 3vw, 34px);
  z-index: var(--oax-z-totop);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 12px 10px 10px;
  border-radius: var(--oax-radius-sm);
  border: 1px solid var(--oax-glass-edge);
  background: var(--oax-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  color: var(--oax-gold-light);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity var(--oax-t-fast) var(--oax-ease),
              transform var(--oax-t-fast) var(--oax-ease),
              visibility var(--oax-t-fast) var(--oax-ease),
              border-color var(--oax-t-fast) var(--oax-ease);
}

.oax-totop.is-shown {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.oax-totop:hover { border-color: var(--oax-gold); }

.oax-totop__arrow {
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-bottom: 7px solid currentColor;
}

.oax-totop__page {
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  color: rgba(159, 176, 192, 0.85);
}

/* ---------- 15. 状态点 ---------- */
.oax-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--oax-gold);
  box-shadow: 0 0 0 3px rgba(217, 169, 76, 0.16);
}

.oax-dot--jade {
  background: var(--oax-jade);
  box-shadow: 0 0 0 3px rgba(111, 182, 158, 0.2);
}

.oax-dot--coral {
  background: var(--oax-coral);
  box-shadow: 0 0 0 3px rgba(239, 107, 69, 0.2);
}

/* ---------- 16. Footer ---------- */
.oax-footer {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(760px 320px at 82% 0%, rgba(217, 169, 76, 0.10), transparent 66%),
    linear-gradient(180deg, #071522 0%, var(--oax-deep) 58%, #030B13 100%);
  border-top: 1px solid var(--oax-line-strong);
  padding-block: clamp(48px, 7vw, 88px) 28px;
  margin-top: clamp(48px, 8vw, 96px);
}

.oax-footer__glow {
  position: absolute;
  top: -180px;
  right: -120px;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(111, 182, 158, 0.14), transparent 66%);
  pointer-events: none;
}

.oax-footer__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 3.2fr) repeat(3, minmax(0, 1.6fr)) minmax(0, 3.4fr);
  gap: clamp(24px, 3vw, 44px);
  padding-bottom: clamp(32px, 4vw, 52px);
  border-bottom: 1px solid var(--oax-line);
}

.oax-footer__brand { max-width: 30ch; }

.oax-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--oax-font-head);
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--oax-cream);
  margin-bottom: 16px;
}

.oax-footer__logo .oax-rail__mark { width: 22px; height: 22px; }
.oax-footer__logo .oax-rail__mark::after { inset: 5px 5px auto auto; width: 6px; height: 6px; }

.oax-footer__tagline {
  font-size: 0.93rem;
  color: rgba(246, 241, 230, 0.74);
  max-width: 22em;
}

.oax-footer__stamp {
  margin-top: 14px;
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(159, 176, 192, 0.6);
}

.oax-footer__status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 16px;
  padding: 6px 14px 6px 12px;
  border: 1px solid rgba(111, 182, 158, 0.3);
  border-radius: 999px;
  background: rgba(111, 182, 158, 0.08);
  font-size: 0.78rem;
  color: rgba(246, 241, 230, 0.85);
  max-width: none;
}

.oax-footer__col-title {
  font-family: var(--oax-font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--oax-gold);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--oax-line);
}

.oax-footer__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.oax-footer__list a {
  position: relative;
  display: inline-block;
  font-size: 0.92rem;
  color: rgba(246, 241, 230, 0.74);
  transition: color var(--oax-t-fast) var(--oax-ease), padding-left var(--oax-t-fast) var(--oax-ease);
}

.oax-footer__list a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 0;
  height: 1px;
  background: var(--oax-coral);
  transform: translateY(-50%);
  transition: width var(--oax-t-fast) var(--oax-ease);
}

.oax-footer__list a:hover {
  color: var(--oax-gold-light);
  padding-left: 14px;
}

.oax-footer__list a:hover::before { width: 9px; }

.oax-footer__contact { max-width: none; }

.oax-footer__contact-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.oax-footer__contact-list li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 0.87rem;
  color: rgba(246, 241, 230, 0.82);
  word-break: break-word;
}

.oax-footer__contact-list .oax-mono {
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  color: rgba(159, 176, 192, 0.6);
}

.oax-footer__contact-list a {
  color: var(--oax-gold-light);
  border-bottom: 1px solid rgba(242, 206, 132, 0.28);
  transition: border-color var(--oax-t-fast) var(--oax-ease);
}

.oax-footer__contact-list a:hover { border-bottom-color: var(--oax-coral); }

.oax-note {
  margin-top: 16px;
  font-size: 0.74rem;
  line-height: 1.7;
  color: rgba(159, 176, 192, 0.78);
  max-width: 34em;
  padding-left: 12px;
  border-left: 1px solid var(--oax-line-strong);
}

.oax-footer__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-top: 22px;
}

.oax-footer__meta .oax-mono {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: rgba(159, 176, 192, 0.62);
}

.oax-footer__icp a { color: rgba(159, 176, 192, 0.8); }
.oax-footer__icp a:hover { color: var(--oax-gold-light); }

.oax-footer__meta-links {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.oax-footer__meta-links a { color: rgba(159, 176, 192, 0.8); }
.oax-footer__meta-links a:hover { color: var(--oax-gold-light); }
.oax-footer__meta-links span { color: rgba(159, 176, 192, 0.34); }

/* ---------- 17. 断点：1440 / 1200 / 960 / 720 / 480 ---------- */
@media (max-width: 1280px) {
  :root { --oax-rail-w: 228px; --oax-pad: clamp(20px, 3.4vw, 44px); }
  .oax-footer__grid { grid-template-columns: minmax(0, 3fr) repeat(3, minmax(0, 1.5fr)) minmax(0, 2.8fr); }
}

@media (max-width: 960px) {
  :root { --oax-rail-w: 72px; }

  body { font-size: 16.5px; }

  .oax-rail { width: var(--oax-rail-w); }
  .oax-rail__inner { padding: 22px 10px 18px; gap: 16px; align-items: center; }

  .oax-rail__brand { padding-bottom: 14px; justify-content: center; }
  .oax-rail__name { display: none; }

  .oax-rail__tagline { display: none; }

  .oax-nav a {
    justify-content: center;
    padding: 12px 0;
    border-radius: var(--oax-radius-sm);
  }

  .oax-nav__label { display: none; }

  .oax-nav a::before {
    left: 50%;
    top: auto;
    bottom: 4px;
    width: 0;
    height: 3px;
    transform: translateX(-50%);
    border-radius: 2px;
    transition: width var(--oax-t-fast) var(--oax-ease);
  }

  .oax-nav a:hover::before,
  .oax-nav a[aria-current="page"]::before { height: 3px; width: 18px; }

  .oax-nav__index { font-size: 0.62rem; }

  .oax-rail__actions { align-items: center; width: 100%; padding-top: 12px; }
  .oax-rail__cta { padding: 10px 6px; font-size: 0.66rem; letter-spacing: 0; }
  .oax-rail__meta { display: none; }

  .oax-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .oax-col-5, .oax-col-7, .oax-col-8 { grid-column: 1 / -1; }
  .oax-col-4, .oax-col-6 { grid-column: span 3; }
  .oax-offset-note { grid-column: 1 / -1; margin-top: 8px; }

  .oax-page__head { grid-template-columns: repeat(6, minmax(0, 1fr)); }

  .oax-footer__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px 20px;
  }
  .oax-footer__brand { grid-column: 1 / -1; max-width: 46ch; }
  .oax-footer__contact { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  :root { --oax-rail-w: 0px; }

  body {
    padding-left: 0;
    padding-top: 62px;
    font-size: 16px;
  }

  /* 顶部条 */
  .oax-topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--oax-z-topbar);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px var(--oax-pad);
    background: rgba(10, 26, 43, 0.9);
    border-bottom: 1px solid var(--oax-line);
    -webkit-backdrop-filter: blur(14px) saturate(130%);
    backdrop-filter: blur(14px) saturate(130%);
  }

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

  .oax-topbar__name {
    font-family: var(--oax-font-head);
    font-size: 1.02rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--oax-cream);
    white-space: nowrap;
  }

  .oax-topbar .oax-rail__mark { width: 22px; height: 22px; }
  .oax-topbar .oax-rail__mark::after { inset: 5px 5px auto auto; width: 6px; height: 6px; }

  /* 抽屉 */
  .oax-rail {
    top: 0;
    bottom: 0;
    width: min(310px, 84vw);
    transform: translateX(-100%);
    transition: transform 260ms var(--oax-ease);
    box-shadow: 24px 0 60px -30px rgba(0, 0, 0, 0.9);
    border-right: 1px solid var(--oax-line-strong);
  }

  .oax-rail[data-open="true"] { transform: translateX(0); }

  .oax-rail__inner {
    align-items: stretch;
    padding: 22px 20px;
    gap: 20px;
    padding-top: 76px;
  }

  .oax-rail__brand { padding-bottom: 16px; justify-content: flex-start; }
  .oax-rail__name { display: inline; font-size: 1.05rem; }
  .oax-rail__tagline { display: block; min-height: 0; }

  .oax-vert {
    writing-mode: horizontal-tb;
    transform: none;
    letter-spacing: 0.04em;
    font-size: 0.78rem;
  }

  .oax-nav { gap: 4px; }

  .oax-nav a {
    justify-content: flex-start;
    padding: 12px 12px 12px 16px;
    border-radius: 0 var(--oax-radius-sm) var(--oax-radius-sm) 0;
    font-size: 1rem;
  }

  .oax-nav__label { display: inline; }

  .oax-nav a::before {
    left: 0;
    top: 50%;
    bottom: auto;
    width: 3px;
    height: 0;
    transform: translateY(-50%);
  }

  .oax-nav a:hover::before,
  .oax-nav a[aria-current="page"]::before { height: 60%; width: 3px; }

  .oax-rail__actions { align-items: stretch; padding-top: 16px; }
  .oax-rail__cta { padding: 12px 14px; font-size: 0.88rem; letter-spacing: 0.02em; }
  .oax-rail__meta { display: block; }

  .oax-rail__scrim { display: block; }

  .oax-progress { z-index: calc(var(--oax-z-topbar) + 2); }

  .oax-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .oax-col-4, .oax-col-6, .oax-col-5, .oax-col-7, .oax-col-8 { grid-column: 1 / -1; }

  .oax-page__head { grid-template-columns: repeat(4, minmax(0, 1fr)); }

  .oax-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .oax-footer__col--terms { grid-column: 1 / -1; }
  .oax-footer__meta { flex-direction: column; align-items: flex-start; gap: 10px; }
}

@media (max-width: 480px) {
  body { padding-top: 58px; }

  .oax-container { padding-inline: 18px; }
  .oax-topbar { padding: 8px 18px; }

  .oax-nav-toggle { padding: 8px 11px; font-size: 0.8rem; gap: 8px; }

  .oax-btn { padding: 12px 20px; font-size: 0.9rem; }

  .oax-footer__grid { grid-template-columns: 1fr; gap: 26px; }
  .oax-footer__col--terms { grid-column: auto; }

  .oax-footer__contact-list li { grid-template-columns: 42px minmax(0, 1fr); }

  .oax-totop { right: 14px; bottom: 14px; padding: 10px 8px 8px; }

  .oax-page { padding-block: 44px 72px; }
}

/* 高对比 / 打印不相关，保持简洁 */
@media print {
  body::before, .oax-rail, .oax-topbar, .oax-totop, .oax-progress { display: none !important; }
  body { padding-left: 0; background: #fff; color: #04101B; }
}

/* ---------- 18. Reduced motion ---------- */
@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;
    scroll-behavior: auto !important;
  }

  .oax-reveal {
    opacity: 1;
    transform: none;
    transition: opacity 200ms linear;
  }

  .oax-totop {
    transition: opacity 200ms linear, visibility 200ms linear;
    transform: none;
  }
}