/* ==========================================================================
   壹号娱乐CN · 共享样式 /assets/site.css
   夜间控制室 × 数据校订台：深墨蓝底色、冷银灰刻度、紫青焦点、暖金节点
   ========================================================================== */

/* --- 1. 变量体系 --------------------------------------------------------- */
:root {
  --yh-ink: #0B1B2B;
  --yh-ink-deep: #07121E;
  --yh-ink-soft: #122A40;

  --yh-silver: #9AA6B2;
  --yh-rock: #6E7378;
  --yh-cream: #F0EDE6;
  --yh-moss: #4F6B5A;
  --yh-clay: #B26A4E;

  --yh-violet: #7B4DFF;
  --yh-violet-deep: #5B34D6;
  --yh-cyan: #2FE6D8;
  --yh-gold: #D6A84B;
  --yh-alert: #E05A5A;

  --yh-line: rgba(154, 166, 178, 0.22);
  --yh-line-strong: rgba(154, 166, 178, 0.42);
  --yh-line-dash: rgba(154, 166, 178, 0.16);

  --yh-radius-lg: 28px;
  --yh-radius-md: 18px;
  --yh-radius-sm: 10px;
  --yh-radius-pill: 999px;

  --yh-font-display: "Arial Narrow", "Helvetica Neue Condensed", "Liberation Sans Narrow",
    "Roboto Condensed", system-ui, "PingFang SC", "Microsoft YaHei", sans-serif;
  --yh-font-body: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  --yh-font-mono: ui-monospace, SFMono-Regular, "Cascadia Mono", "JetBrains Mono", Menlo,
    Consolas, "Liberation Mono", monospace;

  --yh-container: 1240px;
  --yh-gutter: clamp(18px, 4vw, 48px);
  --yh-gap: clamp(16px, 2.2vw, 32px);
  --yh-block: clamp(30px, 5vw, 72px);
}

/* --- 2. 重置与基础排版 --------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100%;
  background-color: var(--yh-ink);
  background-image:
    radial-gradient(140% 90% at 82% -10%, rgba(123, 77, 255, 0.16), transparent 60%),
    radial-gradient(110% 80% at 4% 4%, rgba(47, 230, 216, 0.07), transparent 58%),
    repeating-linear-gradient(to bottom, rgba(154, 166, 178, 0.035) 0 1px, transparent 1px 5px);
  background-attachment: fixed;
  color: var(--yh-silver);
  font-family: var(--yh-font-body);
  font-size: clamp(15px, 1.02vw, 16.5px);
  line-height: 1.75;
  letter-spacing: 0.012em;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

img, svg { max-width: 100%; }
img { height: auto; }

h1, h2, h3, h4 {
  margin: 0 0 0.6em;
  color: var(--yh-cream);
  font-family: var(--yh-font-display);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: 0.03em;
}

h1 { font-size: clamp(2rem, 5.6vw, 4.2rem); }
h2 { font-size: clamp(1.35rem, 2.6vw, 2.1rem); }
h3 { font-size: clamp(1.08rem, 1.7vw, 1.4rem); }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--yh-cyan); text-decoration: none; }
a:hover { color: var(--yh-cream); }

ul, ol { margin: 0 0 1em; padding-left: 1.15em; }
li { margin-bottom: 0.35em; }

hr {
  border: 0;
  height: 1px;
  background: var(--yh-line-dash);
  margin: var(--yh-gap) 0;
}

code, kbd, samp { font-family: var(--yh-font-mono); font-size: 0.92em; }

::selection {
  background: rgba(123, 77, 255, 0.45);
  color: var(--yh-cream);
}

:focus-visible {
  outline: 2px solid var(--yh-cyan);
  outline-offset: 2px;
  border-radius: var(--yh-radius-sm);
  box-shadow: 0 0 0 5px rgba(123, 77, 255, 0.55);
}

/* --- 3. 跳转链接与容器 --------------------------------------------------- */
.yh-skip {
  position: absolute;
  left: var(--yh-gutter);
  top: 10px;
  z-index: 120;
  padding: 10px 18px;
  border-radius: var(--yh-radius-pill);
  background: var(--yh-cream);
  color: var(--yh-ink);
  font-family: var(--yh-font-display);
  font-size: 13px;
  letter-spacing: 0.12em;
  transform: translateY(-220%);
  transition: transform 0.2s ease;
}
.yh-skip:focus { transform: translateY(0); color: var(--yh-ink); }

.yh-container {
  width: 100%;
  max-width: var(--yh-container);
  margin-inline: auto;
  padding-inline: var(--yh-gutter);
}

/* --- 4. 页头 ------------------------------------------------------------- */
.yh-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: linear-gradient(180deg, rgba(7, 18, 30, 0.97), rgba(11, 27, 43, 0.93));
  border-bottom: 1px solid var(--yh-line);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.yh-header__scan {
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--yh-violet) 16%, var(--yh-cyan) 50%,
    var(--yh-gold) 84%, transparent);
  opacity: 0.6;
}

.yh-header__top { border-bottom: 1px dashed var(--yh-line-dash); }

.yh-header__topinner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px clamp(16px, 3vw, 40px);
  padding-block: 12px;
}

.yh-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--yh-cream);
  text-decoration: none;
}
.yh-brand:hover { color: var(--yh-cream); }

.yh-brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border-radius: 12px;
  background: linear-gradient(140deg, var(--yh-cyan), var(--yh-violet));
  color: var(--yh-ink);
  font-family: var(--yh-font-display);
  font-size: 19px;
  font-weight: 800;
  box-shadow: 0 0 0 1px rgba(47, 230, 216, 0.35), 0 10px 24px -14px rgba(123, 77, 255, 0.95);
}

.yh-brand__text { display: flex; flex-direction: column; line-height: 1.14; }

.yh-brand__name {
  font-family: var(--yh-font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.yh-brand__line {
  font-family: var(--yh-font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--yh-rock);
}

.yh-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 0 auto;
  padding: 7px 16px 7px 13px;
  border: 1px solid rgba(47, 230, 216, 0.26);
  border-radius: var(--yh-radius-pill);
  background: rgba(47, 230, 216, 0.06);
  font-size: 12px;
  white-space: nowrap;
}

.yh-status__dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--yh-cyan);
  box-shadow: 0 0 0 4px rgba(47, 230, 216, 0.12);
  animation: yh-pulse 3.6s ease-in-out infinite;
}

@keyframes yh-pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(47, 230, 216, 0.12); }
  50% { box-shadow: 0 0 0 8px rgba(47, 230, 216, 0.03); }
}

.yh-status__label {
  font-family: var(--yh-font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--yh-rock);
}

.yh-status__value {
  font-size: 12px;
  color: var(--yh-cyan);
}

.yh-header__nav { position: relative; }

.yh-header__navinner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 26px);
  min-height: 56px;
}

.yh-nav { flex: 1 1 auto; min-width: 0; }

.yh-nav__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: clamp(2px, 1.4vw, 16px);
  margin: 0;
  padding: 0;
}

.yh-nav__link {
  position: relative;
  display: inline-block;
  padding: 18px 6px 16px;
  color: var(--yh-silver);
  font-family: var(--yh-font-display);
  font-size: 15px;
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: color 0.18s ease, transform 0.18s ease;
}

.yh-nav__link::after {
  content: "";
  position: absolute;
  left: 6px;
  right: 6px;
  bottom: 10px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--yh-cyan), var(--yh-violet));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.22s ease;
}

.yh-nav__link:hover { color: var(--yh-cream); transform: translateY(-1px); }
.yh-nav__link:hover::after { transform: scaleX(1); }

.yh-nav__link[aria-current="page"] { color: var(--yh-cream); }
.yh-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: linear-gradient(90deg, var(--yh-gold), var(--yh-cyan));
}
.yh-nav__link[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 8px;
  width: 5px;
  height: 5px;
  margin-left: -2.5px;
  border-radius: 50%;
  background: var(--yh-gold);
  box-shadow: 0 0 8px var(--yh-gold);
}

.yh-nav__cta {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border: 1px solid rgba(123, 77, 255, 0.62);
  border-radius: var(--yh-radius-pill);
  background: linear-gradient(120deg, var(--yh-violet), var(--yh-violet-deep));
  color: #F7F5FF;
  font-family: var(--yh-font-display);
  font-size: 13.5px;
  letter-spacing: 0.08em;
  text-decoration: none;
  box-shadow: 0 12px 28px -16px rgba(123, 77, 255, 0.95);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.yh-nav__cta:hover {
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 16px 32px -14px rgba(123, 77, 255, 1);
}

.yh-navtoggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 1px solid var(--yh-line-strong);
  border-radius: var(--yh-radius-pill);
  background: rgba(154, 166, 178, 0.06);
  color: var(--yh-cream);
  font-family: var(--yh-font-display);
  font-size: 13px;
  letter-spacing: 0.14em;
  cursor: pointer;
}

.yh-navtoggle__bars { display: grid; gap: 3px; width: 16px; }
.yh-navtoggle__bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--yh-cyan);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.yh-navtoggle[aria-expanded="true"] .yh-navtoggle__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.yh-navtoggle[aria-expanded="true"] .yh-navtoggle__bars i:nth-child(2) { opacity: 0; }
.yh-navtoggle[aria-expanded="true"] .yh-navtoggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* --- 5. 主体与通用区块 --------------------------------------------------- */
.yh-main {
  position: relative;
  display: block;
  padding-block: clamp(24px, 3.6vw, 52px) clamp(48px, 7vw, 110px);
}

.yh-section { padding-block: var(--yh-block); }
.yh-section:first-child { padding-top: 0; }

.yh-grid {
  display: grid;
  gap: var(--yh-gap);
  grid-template-columns: repeat(12, minmax(0, 1fr));
}
.yh-grid--two { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.yh-grid--three { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }

.yh-span-12 { grid-column: span 12; }
.yh-span-8 { grid-column: span 8; }
.yh-span-7 { grid-column: span 7; }
.yh-span-6 { grid-column: span 6; }
.yh-span-5 { grid-column: span 5; }
.yh-span-4 { grid-column: span 4; }

/* --- 6. 文字与数据 ------------------------------------------------------- */
.yh-num {
  font-family: var(--yh-font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

.yh-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--yh-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.28em;
  color: var(--yh-rock);
}
.yh-eyebrow::before {
  content: "";
  width: 34px;
  height: 1px;
  flex: 0 0 auto;
  background: linear-gradient(90deg, transparent, var(--yh-gold));
}

.yh-display {
  font-family: var(--yh-font-display);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 0.98;
  color: var(--yh-cream);
}
.yh-display--xl { font-size: clamp(2.6rem, 9vw, 7rem); }

.yh-prose {
  max-width: 66ch;
  color: var(--yh-silver);
}
.yh-prose h2 { margin-top: 1.6em; }
.yh-prose h3 { margin-top: 1.4em; }
.yh-prose strong { color: var(--yh-cream); }
.yh-prose a { border-bottom: 1px solid rgba(47, 230, 216, 0.45); }

/* --- 7. 标签、面板、按钮 ------------------------------------------------- */
.yh-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 11px;
  border: 1px solid var(--yh-line-strong);
  border-radius: var(--yh-radius-pill);
  background: rgba(154, 166, 178, 0.07);
  color: var(--yh-silver);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.yh-tag--cyan { border-color: rgba(47, 230, 216, 0.45); background: rgba(47, 230, 216, 0.09); color: var(--yh-cyan); }
.yh-tag--violet { border-color: rgba(123, 77, 255, 0.5); background: rgba(123, 77, 255, 0.13); color: #C3ACFF; }
.yh-tag--gold { border-color: rgba(214, 168, 75, 0.5); background: rgba(214, 168, 75, 0.1); color: var(--yh-gold); }
.yh-tag--clay { border-color: rgba(178, 106, 78, 0.5); background: rgba(178, 106, 78, 0.13); color: #D98F70; }
.yh-tag--alert { border-color: rgba(224, 90, 90, 0.5); background: rgba(224, 90, 90, 0.1); color: var(--yh-alert); }

.yh-panel {
  position: relative;
  border: 1px solid rgba(154, 166, 178, 0.1);
  border-radius: var(--yh-radius-lg);
  background: linear-gradient(160deg, rgba(154, 166, 178, 0.09), rgba(11, 27, 43, 0.35));
  padding: clamp(18px, 2.4vw, 30px);
}
.yh-panel__title {
  margin: 0 0 10px;
  font-family: var(--yh-font-display);
  font-size: 17px;
  letter-spacing: 0.06em;
  color: var(--yh-cream);
}
.yh-panel__body { color: var(--yh-silver); font-size: 14.5px; }
.yh-panel__foot {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--yh-line-dash);
  font-family: var(--yh-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--yh-rock);
}

.yh-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: var(--yh-radius-pill);
  font-family: var(--yh-font-display);
  font-size: 14px;
  letter-spacing: 0.1em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease,
    color 0.16s ease, border-color 0.16s ease;
}
.yh-btn--primary {
  border-color: rgba(123, 77, 255, 0.7);
  background: linear-gradient(120deg, var(--yh-violet), var(--yh-violet-deep));
  color: #F7F5FF;
  box-shadow: 0 14px 32px -18px rgba(123, 77, 255, 1);
}
.yh-btn--primary:hover {
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 18px 36px -16px rgba(123, 77, 255, 1);
}
.yh-btn--ghost {
  border-color: var(--yh-line-strong);
  background: transparent;
  color: var(--yh-cream);
}
.yh-btn--ghost:hover {
  border-color: var(--yh-cyan);
  background: rgba(47, 230, 216, 0.07);
  color: var(--yh-cyan);
  transform: translateY(-2px);
}

/* --- 8. 面包屑与索引 ----------------------------------------------------- */
.yh-crumb { padding-top: clamp(14px, 2.2vw, 24px); }
.yh-crumb__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  font-family: var(--yh-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--yh-rock);
}
.yh-crumb__item { display: inline-flex; align-items: center; gap: 8px; margin: 0; }
.yh-crumb__item + .yh-crumb__item::before { content: "/"; color: rgba(154, 166, 178, 0.42); }
.yh-crumb__link {
  color: var(--yh-silver);
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}
.yh-crumb__link:hover { color: var(--yh-cyan); border-bottom-color: var(--yh-cyan); }

.yh-index {
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--yh-font-mono);
  font-size: 13px;
}
.yh-index__item { margin: 0; border-bottom: 1px dashed var(--yh-line-dash); }
.yh-index__link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 2px;
  color: var(--yh-silver);
  text-decoration: none;
  transition: color 0.16s ease, padding-left 0.16s ease;
}
.yh-index__link:hover { color: var(--yh-cyan); padding-left: 8px; }
.yh-index__link[aria-current="true"] { color: var(--yh-cream); }
.yh-index__num { color: var(--yh-gold); font-size: 11px; letter-spacing: 0.1em; }

.yh-rail { position: relative; padding-left: 18px; }
.yh-rail::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, var(--yh-gold), var(--yh-cyan), transparent);
}

/* --- 9. 媒体容器（页面阶段放图） ----------------------------------------- */
.yh-media {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid rgba(154, 166, 178, 0.16);
  border-radius: var(--yh-radius-md);
  background:
    radial-gradient(120% 120% at 18% 0%, rgba(123, 77, 255, 0.22), transparent 62%),
    linear-gradient(160deg, rgba(154, 166, 178, 0.14), rgba(11, 27, 43, 0.62));
}
.yh-media--16x9 { aspect-ratio: 16 / 9; }
.yh-media--4x3 { aspect-ratio: 4 / 3; }
.yh-media--1x1 { aspect-ratio: 1 / 1; }
.yh-media--wide { aspect-ratio: 21 / 9; }

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

.yh-media__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 14px;
  font-family: var(--yh-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--yh-silver);
  background: linear-gradient(180deg, transparent, rgba(7, 18, 30, 0.9));
}

.yh-media--empty::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(to bottom, rgba(240, 237, 230, 0.05) 0 1px, transparent 1px 4px);
}

/* --- 10. 动效与进度 ------------------------------------------------------ */
.yh-reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.yh-reveal.is-visible { opacity: 1; transform: none; }

.yh-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 120;
  pointer-events: none;
}
.yh-progress__bar {
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--yh-violet), var(--yh-cyan) 58%, var(--yh-gold));
}

/* --- 11. 页脚 ------------------------------------------------------------ */
.yh-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 96px);
  border-top: 1px solid var(--yh-line);
  background: linear-gradient(180deg, var(--yh-ink) 0%, var(--yh-ink-deep) 100%);
}

.yh-footer__rail {
  height: 10px;
  background-image: repeating-linear-gradient(90deg, rgba(154, 166, 178, 0.42) 0 1px, transparent 1px 18px);
}

.yh-footer__grid {
  display: grid;
  gap: clamp(26px, 4vw, 56px);
  grid-template-columns: minmax(260px, 1.4fr) minmax(220px, 1fr) minmax(200px, 0.85fr);
  padding-block: clamp(36px, 5vw, 68px) clamp(22px, 3vw, 34px);
}

.yh-footer__brandline {
  margin: 0 0 12px;
  font-family: var(--yh-font-display);
  font-size: 17px;
  letter-spacing: 0.12em;
  color: var(--yh-cream);
}

.yh-footer__desc {
  margin: 0 0 12px;
  max-width: 44ch;
  font-size: 14px;
  color: var(--yh-silver);
}

.yh-footer__note {
  margin: 0 0 18px;
  max-width: 46ch;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--yh-rock);
}

.yh-footer__heading {
  margin: 0 0 14px;
  font-family: var(--yh-font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.24em;
  color: var(--yh-rock);
}

.yh-footer__data { margin: 0; }

.yh-footer__row {
  display: grid;
  gap: 4px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--yh-line-dash);
}
.yh-footer__row dt {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--yh-rock);
}
.yh-footer__row dd {
  margin: 0;
  font-size: 13.5px;
  color: var(--yh-cream);
  word-break: break-word;
}

.yh-footer__links,
.yh-footer__marks {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13.5px;
}

.yh-footer__links { display: flex; flex-wrap: wrap; gap: 8px 18px; }

.yh-footer__link {
  color: var(--yh-silver);
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}
.yh-footer__link:hover { color: var(--yh-cyan); border-bottom-color: var(--yh-cyan); }

.yh-footer__markitem {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 9px 0;
  margin: 0;
  border-bottom: 1px dashed var(--yh-line-dash);
  color: var(--yh-silver);
}
.yh-footer__markitem .yh-num { color: var(--yh-gold); font-size: 11px; }

.yh-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 26px;
  padding-block: 18px 28px;
  border-top: 1px dashed var(--yh-line-dash);
  font-size: 12px;
  color: var(--yh-rock);
}
.yh-footer__icp { margin: 0; color: var(--yh-silver); }
.yh-footer__meta { margin: 0; }

/* --- 12. 响应式 ---------------------------------------------------------- */
@media (max-width: 1080px) {
  .yh-span-8, .yh-span-7, .yh-span-6, .yh-span-5, .yh-span-4 { grid-column: span 12; }
}

@media (max-width: 900px) {
  .yh-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .yh-footer__intro { grid-column: 1 / -1; }
}

@media (max-width: 920px) {
  .yh-navtoggle { display: inline-flex; }

  .yh-header__navinner { justify-content: space-between; }

  .yh-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    padding: 10px var(--yh-gutter) 22px;
    border-bottom: 1px solid var(--yh-line-strong);
    background: linear-gradient(180deg, rgba(9, 22, 36, 0.99), rgba(7, 18, 30, 0.99));
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    max-height: calc(100vh - 140px);
    overflow-y: auto;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s linear;
  }
  .yh-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .yh-nav__list { flex-direction: column; gap: 0; }
  .yh-nav__link {
    display: block;
    padding: 13px 6px;
    border-bottom: 1px dashed var(--yh-line-dash);
  }
  .yh-nav__link::after { bottom: 6px; }
  .yh-nav__link[aria-current="page"]::before { top: 50%; margin-top: -2.5px; left: 0; margin-left: 0; }
  .yh-nav__link[aria-current="page"] { padding-left: 16px; }
}

@media (max-width: 720px) {
  .yh-header__topinner { padding-block: 10px; }
  .yh-status { margin-left: auto; }
  .yh-status__label { display: none; }
}

@media (max-width: 620px) {
  .yh-footer__grid { grid-template-columns: 1fr; }
  .yh-footer__bottom { justify-content: flex-start; }
  .yh-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

@media (max-width: 520px) {
  .yh-navtoggle__text { display: none; }
  .yh-status__value { font-size: 11px; }
}

/* --- 13. 可访问性与动效降级 --------------------------------------------- */
@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;
  }

  .yh-reveal { opacity: 1; transform: none; }
  .yh-status__dot { animation: none; }
  .yh-progress { display: none; }
}