/* =========================================================
   易倍体育看台 · 共享样式 /assets/site.css
   看台战术板体系：深墨绿底色 + 苔绿面板 + 金属铜刻度 + 青柠数据闪点
   ========================================================= */

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

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

body { margin: 0; }

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

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩 */
  --yb-deep: #0C2B25;
  --yb-moss: #2E5D4C;
  --yb-copper: #B4763A;
  --yb-copper-lt: #D9A45B;
  --yb-lime: #C8F04B;
  --yb-charcoal: #131716;
  --yb-sand: #E4DACB;
  --yb-paper: #F6F2EA;
  --yb-rock: #6E756E;
  --yb-mist: #7FB8A6;

  --yb-deep-solid: rgba(12, 43, 37, .92);
  --yb-deep-glass: rgba(46, 93, 76, .28);
  --yb-deep-glass-hover: rgba(46, 93, 76, .46);
  --yb-line: rgba(228, 218, 203, .18);
  --yb-line-strong: rgba(228, 218, 203, .34);
  --yb-line-warm: rgba(180, 118, 58, .38);
  --yb-text-soft: rgba(228, 218, 203, .84);
  --yb-text-dim: rgba(228, 218, 203, .68);

  /* 字体 */
  --yb-font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --yb-font-headline: "Source Han Sans CN Narrow", "Noto Sans SC Narrow", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --yb-font-body: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --yb-font-data: ui-monospace, "SFMono-Regular", "JetBrains Mono", "Roboto Mono", Menlo, Consolas, "Noto Sans SC", monospace;

  /* 字号阶梯 */
  --yb-fs-12: .75rem;
  --yb-fs-14: .875rem;
  --yb-fs-16: 1rem;
  --yb-fs-18: 1.125rem;
  --yb-fs-24: 1.5rem;
  --yb-fs-32: 2rem;
  --yb-fs-48: 3rem;
  --yb-fs-72: 4.5rem;
  --yb-fs-display: clamp(2.5rem, 7vw, 6rem);

  /* 形状 */
  --yb-r-card: 14px;
  --yb-r-img: 10px;
  --yb-r-glass: 18px;

  /* 尺寸 */
  --yb-shell: 1240px;
  --yb-shell-narrow: 820px;
  --yb-gap: 24px;
  --yb-panel-space: 72px;
}

/* ---------- 3. 基础排版 ---------- */
body {
  background: var(--yb-deep);
  color: var(--yb-sand);
  font-family: var(--yb-font-body);
  font-size: var(--yb-fs-16);
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: var(--yb-font-headline);
  font-weight: 700;
  line-height: 1.2;
  color: var(--yb-paper);
}

p { max-width: 38em; }

:target, [data-panel] { scroll-margin-top: 96px; }

:where(a, button, [tabindex]):focus-visible {
  outline: 2px solid var(--yb-lime);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 跳至主要内容 */
.yb-skip {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 200;
  padding: 12px 18px;
  background: var(--yb-charcoal);
  color: var(--yb-lime);
  border: 1px solid var(--yb-copper);
  border-radius: 10px;
  font-size: var(--yb-fs-14);
  transition: top .18s ease;
}
.yb-skip:focus { top: 12px; }

/* ---------- 4. 容器 ---------- */
.yb-shell {
  width: 100%;
  max-width: var(--yb-shell);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.yb-shell--narrow { max-width: var(--yb-shell-narrow); }

/* ---------- 5. 页头 ---------- */
.yb-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(12, 43, 37, .78) 0%, rgba(12, 43, 37, .30) 100%);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(228, 218, 203, .14);
  transition: background-color .24s ease, border-color .24s ease, box-shadow .24s ease;
}

.yb-header[data-scrolled="true"] {
  background: var(--yb-deep-solid);
  border-bottom-color: var(--yb-line-warm);
  box-shadow: inset 0 -1px 0 rgba(200, 240, 75, .10);
}

.yb-header__inner {
  width: 100%;
  max-width: var(--yb-shell);
  margin: 0 auto;
  min-height: 68px;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.yb-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

/* 品牌 */
.yb-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}
.yb-brand__mark {
  position: relative;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  border: 2px solid var(--yb-copper);
  border-radius: 9px;
  transition: border-color .2s ease, background-color .2s ease;
}
.yb-brand__mark::before {
  content: "";
  position: absolute;
  right: 3px;
  bottom: 3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--yb-lime);
  box-shadow: 0 0 0 3px rgba(200, 240, 75, .16);
}
.yb-brand__mark::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 13px;
  width: 15px;
  height: 2px;
  background: var(--yb-copper);
  transform: rotate(-38deg);
  transform-origin: left center;
}
.yb-brand:hover .yb-brand__mark { border-color: var(--yb-copper-lt); background: rgba(180, 118, 58, .12); }
.yb-brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.yb-brand__name {
  font-family: var(--yb-font-headline);
  font-weight: 700;
  font-size: var(--yb-fs-18);
  color: var(--yb-paper);
  letter-spacing: .04em;
}
.yb-brand__tag {
  font-family: var(--yb-font-data);
  font-size: var(--yb-fs-12);
  letter-spacing: .3em;
  color: var(--yb-copper-lt);
}

/* 导航 */
.yb-nav { margin-left: auto; }
.yb-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}
.yb-nav__item { position: relative; }
.yb-nav__index { display: none; }
.yb-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 10px 12px;
  font-family: var(--yb-font-headline);
  font-weight: 700;
  font-size: var(--yb-fs-14);
  letter-spacing: .06em;
  color: var(--yb-sand);
  transition: color .2s ease;
}
.yb-nav__link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  background: var(--yb-copper);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .2s ease;
}
.yb-nav__link:hover,
.yb-nav__link:focus-visible { color: var(--yb-paper); }
.yb-nav__link:hover::after,
.yb-nav__link:focus-visible::after { transform: scaleX(1); }
.yb-nav__link[aria-current="page"] { color: var(--yb-copper-lt); }
.yb-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--yb-copper-lt);
}
.yb-nav__link[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 50%;
  width: 5px;
  height: 5px;
  margin-top: -2.5px;
  border-radius: 50%;
  background: var(--yb-lime);
}

/* 汉堡按钮 */
.yb-nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--yb-line-strong);
  border-radius: 12px;
  color: var(--yb-sand);
  font-size: var(--yb-fs-14);
  letter-spacing: .14em;
  transition: border-color .2s ease, color .2s ease;
}
.yb-nav-toggle:hover { border-color: var(--yb-copper-lt); color: var(--yb-paper); }
.yb-nav-toggle__bars { position: relative; display: block; width: 16px; height: 10px; }
.yb-nav-toggle__bars::before,
.yb-nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: var(--yb-copper-lt);
  transition: transform .2s ease, top .2s ease, bottom .2s ease;
}
.yb-nav-toggle__bars::before { top: 0; }
.yb-nav-toggle__bars::after { bottom: 0; }
.yb-nav-toggle[aria-expanded="true"] .yb-nav-toggle__bars::before { top: 4px; transform: rotate(45deg); }
.yb-nav-toggle[aria-expanded="true"] .yb-nav-toggle__bars::after { bottom: 4px; transform: rotate(-45deg); }

/* 滚动进度 */
.yb-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  overflow: hidden;
  pointer-events: none;
}
.yb-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--yb-copper), var(--yb-lime));
  transition: width .12s linear;
}

/* ---------- 6. 按钮 ---------- */
.yb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-family: var(--yb-font-headline);
  font-weight: 700;
  font-size: var(--yb-fs-14);
  letter-spacing: .06em;
  cursor: pointer;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease;
}
.yb-btn--copper {
  background: var(--yb-copper);
  border-color: var(--yb-copper);
  color: var(--yb-charcoal);
}
.yb-btn--copper:hover,
.yb-btn--copper:focus-visible {
  background: var(--yb-copper-lt);
  border-color: var(--yb-copper-lt);
}
.yb-btn--ghost {
  background: transparent;
  border-color: var(--yb-line-strong);
  color: var(--yb-sand);
}
.yb-btn--ghost:hover,
.yb-btn--ghost:focus-visible {
  border-color: var(--yb-copper-lt);
  background: rgba(180, 118, 58, .14);
  color: var(--yb-paper);
}
.yb-btn--sm { padding: 9px 14px; border-radius: 10px; font-size: var(--yb-fs-14); }
.yb-btn--block { width: 100%; }

/* ---------- 7. 面包屑 ---------- */
.yb-crumb {
  width: 100%;
  max-width: var(--yb-shell);
  margin: 0 auto;
  padding: 20px 24px 0;
}
.yb-crumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: var(--yb-fs-14);
  color: var(--yb-rock);
}
.yb-crumb__link {
  color: var(--yb-rock);
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}
.yb-crumb__link:hover,
.yb-crumb__link:focus-visible {
  color: var(--yb-copper-lt);
  border-bottom-color: var(--yb-copper-lt);
}
.yb-crumb__sep { color: rgba(110, 117, 110, .8); }
.yb-crumb__current { color: var(--yb-sand); }

/* ---------- 8. 刻度轨道布局 ---------- */
.yb-layout {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}
.yb-layout__aside { position: relative; }
.yb-layout__main { min-width: 0; }

.yb-rail { position: sticky; top: 100px; }
.yb-rail__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-left: 1px solid var(--yb-line-strong);
}
.yb-rail__item { display: block; }
.yb-rail__link {
  display: grid;
  grid-template-columns: 10px 24px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  margin-left: -1px;
  padding: 10px 8px 10px 12px;
  border-left: 2px solid transparent;
  font-size: var(--yb-fs-14);
  letter-spacing: .05em;
  color: var(--yb-rock);
  transition: color .2s ease, border-color .12s ease, background-color .2s ease;
}
.yb-rail__link:hover,
.yb-rail__link:focus-visible { color: var(--yb-paper); background: rgba(46, 93, 76, .22); }
.yb-rail__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--yb-line-strong);
  transition: background-color .2s ease, box-shadow .2s ease;
}
.yb-rail__num {
  font-family: var(--yb-font-data);
  font-size: var(--yb-fs-12);
  color: var(--yb-copper);
  letter-spacing: .08em;
}
.yb-rail__label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.yb-rail__link[data-current] {
  color: var(--yb-paper);
  border-left-color: var(--yb-copper);
  background: rgba(46, 93, 76, .28);
}
.yb-rail__link[data-current] .yb-rail__dot {
  background: var(--yb-lime);
  box-shadow: 0 0 0 3px rgba(200, 240, 75, .18);
}

/* ---------- 9. 面板 ---------- */
.yb-panel {
  position: relative;
  background: var(--yb-deep);
  border: 1px solid var(--yb-line);
  border-radius: var(--yb-r-card);
  padding: 32px;
  margin-bottom: var(--yb-panel-space);
}
.yb-panel--glass {
  background: var(--yb-deep-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-radius: var(--yb-r-glass);
  border-color: rgba(228, 218, 203, .24);
}
.yb-panel--moss { background: var(--yb-moss); border-color: rgba(228, 218, 203, .22); }
.yb-panel--charcoal { background: var(--yb-charcoal); border-color: rgba(180, 118, 58, .28); }
.yb-panel--sand {
  background: var(--yb-sand);
  border-color: rgba(19, 23, 22, .12);
  color: var(--yb-charcoal);
}
.yb-panel--sand .yb-panel__title,
.yb-panel--sand .yb-card__title,
.yb-panel--sand .yb-section-title { color: var(--yb-charcoal); }
.yb-panel--sand .yb-panel__foot { border-top-color: rgba(19, 23, 22, .16); color: rgba(19, 23, 22, .62); }
.yb-panel--sand .yb-note,
.yb-panel--sand .yb-card__meta { color: rgba(19, 23, 22, .62); }
.yb-panel--sand .yb-card {
  background: rgba(255, 255, 255, .42);
  border-color: rgba(19, 23, 22, .12);
}
.yb-panel--sand .yb-card:hover { background: rgba(255, 255, 255, .68); border-color: var(--yb-copper); }
.yb-panel--sand .yb-card__text { color: rgba(19, 23, 22, .82); }

.yb-panel__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  padding-bottom: 14px;
  margin-bottom: 24px;
  border-bottom: 1px dashed var(--yb-line-strong);
}
.yb-panel--sand .yb-panel__head { border-bottom-color: rgba(19, 23, 22, .18); }
.yb-panel__num {
  font-family: var(--yb-font-data);
  font-size: var(--yb-fs-12);
  letter-spacing: .18em;
  color: var(--yb-copper);
}
.yb-panel__title {
  font-family: var(--yb-font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: .01em;
}
.yb-panel__kicker {
  margin-left: auto;
  font-family: var(--yb-font-data);
  font-size: var(--yb-fs-12);
  letter-spacing: .2em;
  color: var(--yb-rock);
}
.yb-panel__body { min-width: 0; }
.yb-panel__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  justify-content: space-between;
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px dashed var(--yb-line);
  font-size: var(--yb-fs-14);
  color: var(--yb-rock);
}

/* ---------- 10. 网格 ---------- */
.yb-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--yb-gap);
  align-items: start;
}
.yb-col-3 { grid-column: span 3; }
.yb-col-4 { grid-column: span 4; }
.yb-col-5 { grid-column: span 5; }
.yb-col-6 { grid-column: span 6; }
.yb-col-7 { grid-column: span 7; }
.yb-col-8 { grid-column: span 8; }
.yb-col-12 { grid-column: span 12; }
.yb-tilt-1 { margin-top: 8px; }
.yb-tilt-2 { margin-top: 18px; }
.yb-tilt-3 { margin-top: 32px; }

/* ---------- 11. 卡片与数据 ---------- */
.yb-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
  background: var(--yb-deep-glass);
  border: 1px solid var(--yb-line);
  border-radius: var(--yb-r-card);
  transition: border-color .2s ease, background-color .2s ease;
}
.yb-card:hover,
.yb-card:focus-within {
  border-color: var(--yb-copper);
  background: var(--yb-deep-glass-hover);
}
.yb-card__tag {
  font-family: var(--yb-font-data);
  font-size: var(--yb-fs-12);
  letter-spacing: .16em;
  color: var(--yb-copper-lt);
}
.yb-card__title {
  font-family: var(--yb-font-headline);
  font-weight: 700;
  font-size: var(--yb-fs-18);
  line-height: 1.4;
  color: var(--yb-paper);
}
.yb-card__text { font-size: var(--yb-fs-16); line-height: 1.75; color: var(--yb-text-soft); }
.yb-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--yb-line);
  font-family: var(--yb-font-data);
  font-size: var(--yb-fs-12);
  color: var(--yb-rock);
}

.yb-stat { display: flex; flex-direction: column; gap: 4px; }
.yb-stat__value {
  font-family: var(--yb-font-data);
  font-size: clamp(1.75rem, 3.4vw, 2.75rem);
  line-height: 1.05;
  color: var(--yb-lime);
  font-variant-numeric: tabular-nums;
  transform-origin: left center;
  transition: transform .2s ease;
}
.yb-stat__unit { margin-left: 4px; font-size: .48em; color: var(--yb-copper-lt); }
.yb-stat__label { font-size: var(--yb-fs-12); letter-spacing: .14em; color: var(--yb-rock); }
.yb-card:hover .yb-stat__value { transform: scale(1.04); }

.yb-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--yb-lime);
  box-shadow: 0 0 0 4px rgba(200, 240, 75, .16);
  vertical-align: middle;
}

.yb-tag {
  display: inline-block;
  padding: 3px 8px;
  border: 1px solid rgba(217, 164, 91, .42);
  border-radius: 6px;
  font-family: var(--yb-font-data);
  font-size: var(--yb-fs-12);
  letter-spacing: .12em;
  color: var(--yb-copper-lt);
}

/* ---------- 12. 筛选 chip ---------- */
.yb-chip-group { display: flex; flex-wrap: wrap; gap: 8px; }
.yb-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--yb-line-strong);
  border-radius: 999px;
  font-size: var(--yb-fs-14);
  letter-spacing: .04em;
  color: var(--yb-sand);
  transition: border-color .2s ease, color .2s ease, background-color .2s ease;
}
.yb-chip:hover { border-color: var(--yb-copper-lt); color: var(--yb-paper); }
.yb-chip[aria-pressed="true"],
.yb-chip[data-chip-active] {
  border-color: var(--yb-lime);
  background: rgba(200, 240, 75, .10);
  color: var(--yb-lime);
}

/* ---------- 13. 表格 ---------- */
.yb-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--yb-line);
  border-radius: var(--yb-r-card);
  background: rgba(19, 23, 22, .45);
}
.yb-table { min-width: 560px; font-size: var(--yb-fs-14); }
.yb-table caption {
  padding: 14px 18px;
  text-align: left;
  font-family: var(--yb-font-data);
  font-size: var(--yb-fs-12);
  letter-spacing: .16em;
  color: var(--yb-copper);
  border-bottom: 1px solid var(--yb-line);
}
.yb-table th,
.yb-table td {
  padding: 12px 18px;
  text-align: left;
  border-bottom: 1px solid var(--yb-line);
  white-space: nowrap;
}
.yb-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: #12211c;
  font-family: var(--yb-font-data);
  font-weight: 400;
  font-size: var(--yb-fs-12);
  letter-spacing: .12em;
  color: var(--yb-mist);
}
.yb-table tbody tr:hover { background: rgba(46, 93, 76, .28); }
.yb-table td.is-num {
  font-family: var(--yb-font-data);
  font-size: var(--yb-fs-18);
  color: var(--yb-lime);
  font-variant-numeric: tabular-nums;
}

/* ---------- 14. 图片容器 ---------- */
.yb-figure { margin: 0; }
.yb-figure__media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--yb-line);
  border-radius: var(--yb-r-img);
  background: linear-gradient(140deg, #123a31 0%, #0C2B25 58%, #131716 100%);
}
.yb-figure__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(228, 218, 203, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(228, 218, 203, .07) 1px, transparent 1px);
  background-size: 32px 32px;
}
.yb-figure__img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.yb-figure--16x9 .yb-figure__media { aspect-ratio: 16 / 9; }
.yb-figure--4x3 .yb-figure__media { aspect-ratio: 4 / 3; }
.yb-figure--1x1 .yb-figure__media { aspect-ratio: 1 / 1; }
.yb-figure--wide .yb-figure__media { aspect-ratio: 21 / 9; }
.yb-figure__cap {
  margin-top: 10px;
  font-family: var(--yb-font-data);
  font-size: var(--yb-fs-12);
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--yb-rock);
}

/* ---------- 15. 文字工具 ---------- */
.yb-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--yb-font-data);
  font-size: var(--yb-fs-12);
  letter-spacing: .24em;
  color: var(--yb-copper);
}
.yb-eyebrow::before { content: ""; width: 18px; height: 2px; background: var(--yb-copper); }
.yb-section-title {
  font-family: var(--yb-font-display);
  font-weight: 900;
  font-size: clamp(1.75rem, 4vw, 3rem);
  line-height: 1.12;
  letter-spacing: .01em;
  color: var(--yb-paper);
}
.yb-lede {
  font-size: var(--yb-fs-18);
  line-height: 1.8;
  color: var(--yb-text-soft);
  max-width: 38em;
}
.yb-note { font-size: var(--yb-fs-14); line-height: 1.75; color: var(--yb-rock); }
.yb-link {
  color: var(--yb-copper-lt);
  border-bottom: 1px solid rgba(217, 164, 91, .45);
  transition: color .2s ease, border-color .2s ease;
}
.yb-link:hover,
.yb-link:focus-visible { color: var(--yb-lime); border-bottom-color: var(--yb-lime); }
.yb-divider { height: 1px; margin: 48px 0; background: var(--yb-line); }
.yb-stack > * + * { margin-top: 16px; }

/* ---------- 16. 滚动显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .24s ease, transform .24s ease;
}
[data-reveal].is-visible { opacity: 1; transform: none; }
html:not(.yb-js) [data-reveal] { opacity: 1; transform: none; }

/* ---------- 17. 页脚 ---------- */
.yb-footer {
  background: var(--yb-charcoal);
  color: var(--yb-sand);
  border-top: 1px solid var(--yb-line-warm);
}
.yb-footer__top {
  width: 100%;
  max-width: var(--yb-shell);
  margin: 0 auto;
  padding: 64px 24px 36px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.5fr) minmax(0, 1.15fr);
  gap: 44px;
}
.yb-footer__wordmark {
  font-family: var(--yb-font-display);
  font-weight: 900;
  font-size: var(--yb-fs-24);
  color: var(--yb-paper);
  letter-spacing: .02em;
}
.yb-footer__tagline {
  margin-top: 6px;
  font-family: var(--yb-font-data);
  font-size: var(--yb-fs-12);
  letter-spacing: .34em;
  color: var(--yb-copper-lt);
}
.yb-footer__closing {
  margin-top: 18px;
  font-size: var(--yb-fs-14);
  line-height: 1.85;
  color: var(--yb-text-dim);
  max-width: 26em;
}
.yb-footer__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}
.yb-footer__title {
  margin-bottom: 14px;
  font-family: var(--yb-font-data);
  font-weight: 400;
  font-size: var(--yb-fs-12);
  letter-spacing: .22em;
  color: var(--yb-mist);
}
.yb-footer__list { display: flex; flex-direction: column; gap: 10px; }
.yb-footer__link {
  display: inline-block;
  padding-bottom: 2px;
  font-size: var(--yb-fs-14);
  color: var(--yb-text-soft);
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}
.yb-footer__link:hover,
.yb-footer__link:focus-visible {
  color: var(--yb-lime);
  border-bottom-color: rgba(200, 240, 75, .5);
}
.yb-footer__contact-list { display: flex; flex-direction: column; gap: 12px; }
.yb-footer__contact-row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}
.yb-footer__contact-label {
  font-size: var(--yb-fs-12);
  letter-spacing: .14em;
  color: var(--yb-rock);
}
.yb-footer__contact-value {
  margin: 0;
  font-family: var(--yb-font-data);
  font-size: var(--yb-fs-14);
  line-height: 1.7;
  color: var(--yb-sand);
  word-break: break-word;
}
.yb-footer__note {
  margin-top: 16px;
  font-size: var(--yb-fs-12);
  line-height: 1.8;
  color: rgba(110, 117, 110, .98);
  max-width: 34em;
}
.yb-footer__bottom {
  width: 100%;
  max-width: var(--yb-shell);
  margin: 0 auto;
  padding: 18px 24px 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  justify-content: space-between;
  border-top: 1px dashed rgba(228, 218, 203, .18);
}
.yb-footer__legal {
  font-family: var(--yb-font-data);
  font-size: var(--yb-fs-12);
  letter-spacing: .06em;
  color: var(--yb-rock);
  max-width: none;
}

/* ---------- 18. 响应式 ---------- */
@media (max-width: 1080px) {
  .yb-footer__top { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 36px; }
  .yb-footer__contact { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .yb-header__inner { min-height: 62px; padding: 10px 16px; gap: 12px; }
  .yb-shell { padding-left: 18px; padding-right: 18px; }
  .yb-crumb { padding: 16px 18px 0; }
  .yb-footer__top { padding: 48px 18px 28px; }
  .yb-footer__bottom { padding: 16px 18px 24px; }

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

  .yb-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-left: 0;
    max-height: min(72vh, 520px);
    overflow-y: auto;
    padding: 8px 16px 20px;
    background: rgba(12, 43, 37, .97);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(180, 118, 58, .5);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
  }
  .yb-nav[data-open] { opacity: 1; visibility: visible; transform: none; }
  .yb-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .yb-nav__item { border-bottom: 1px dashed rgba(228, 218, 203, .16); }
  .yb-nav__item:last-child { border-bottom: 0; }
  .yb-nav__link {
    width: 100%;
    padding: 14px 4px;
    font-size: var(--yb-fs-16);
    justify-content: flex-start;
  }
  .yb-nav__link::after { display: none; }
  .yb-nav__index {
    display: inline-block;
    width: 34px;
    flex: 0 0 34px;
    font-family: var(--yb-font-data);
    font-size: var(--yb-fs-12);
    font-weight: 400;
    letter-spacing: .08em;
    color: var(--yb-copper);
  }
  .yb-nav__link[aria-current="page"] { color: var(--yb-copper-lt); }
  .yb-nav__link[aria-current="page"]::before { left: auto; right: 6px; }

  .yb-layout { display: block; }
  .yb-layout__main { padding-bottom: 8px; }
  .yb-rail {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: auto;
    z-index: 55;
    padding: 8px 12px;
    background: rgba(12, 43, 37, .95);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-top: 1px solid rgba(180, 118, 58, .45);
  }
  .yb-rail__list {
    flex-direction: row;
    gap: 6px;
    overflow-x: auto;
    border-left: 0;
    scrollbar-width: none;
  }
  .yb-rail__list::-webkit-scrollbar { display: none; }
  .yb-rail__item { flex: 0 0 auto; }
  .yb-rail__link {
    grid-template-columns: 10px minmax(0, 1fr);
    margin-left: 0;
    padding: 6px 12px;
    border-left: 0;
    border-bottom: 2px solid transparent;
    border-radius: 8px;
    white-space: nowrap;
    font-size: var(--yb-fs-12);
  }
  .yb-rail__num { display: none; }
  .yb-rail__label { white-space: nowrap; }
  .yb-rail__link[data-current] {
    border-left-color: transparent;
    border-bottom-color: var(--yb-copper);
    background: rgba(46, 93, 76, .5);
  }
  body:has(.yb-rail) { padding-bottom: 58px; }

  .yb-col-3, .yb-col-4, .yb-col-5, .yb-col-6, .yb-col-7, .yb-col-8 { grid-column: span 12; }
  .yb-tilt-1, .yb-tilt-2, .yb-tilt-3 { margin-top: 0; }
  .yb-panel { padding: 22px 18px; margin-bottom: 52px; }
  .yb-panel__kicker { margin-left: 0; width: 100%; }
}

@media (max-width: 620px) {
  :root { --yb-gap: 16px; }
  .yb-btn--sm { padding: 8px 12px; font-size: var(--yb-fs-12); }
  .yb-nav-toggle__label { display: none; }
  .yb-footer__top { grid-template-columns: minmax(0, 1fr); }
  .yb-footer__grid { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .yb-footer__bottom { flex-direction: column; align-items: flex-start; }
  .yb-panel__foot { flex-direction: column; }
}

/* ---------- 19. 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .yb-card:hover .yb-stat__value { transform: none; }
  .yb-nav__link::after { transform: scaleX(1); }
}