/* ============================================================
   YOBO体育 · 体育赛务档案  /assets/site.css
   共享外壳与基础组件：reset、变量、中文排版、页头、页脚、
   按钮、面包屑、正文容器、网格、数据组件、图片容器基础规则
   ============================================================ */

:root {
  --pitch-deep: #0A1C14;
  --pitch-night: #0F2A1E;
  --pitch-mid: #173B2B;
  --line-green: #2C6A4B;
  --chalk: #EEF4EF;
  --dust: #9BB3A6;
  --sand: #D6AE5C;
  --flag-yellow: #E4C544;
  --flag-red: #CE4B41;

  --ff-display: "Archivo Narrow", "Oswald", "Arial Narrow", "Helvetica Neue", Helvetica, sans-serif;
  --ff-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --ff-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;

  --edge: 2px solid var(--line-green);
  --hard-shadow: 6px 6px 0 rgba(0, 0, 0, 0.45);
  --hard-shadow-lg: 10px 10px 0 rgba(0, 0, 0, 0.5);
  --wrap: 1200px;
  --gutter: 28px;
  --header-h: 96px;
  --header-h-sm: 56px;
  --ease: 160ms cubic-bezier(0.3, 0, 0.2, 1);
}

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

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

body {
  margin: 0;
  background-color: var(--pitch-deep);
  color: var(--chalk);
  font-family: var(--ff-body);
  font-size: 17px;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.5em;
  font-family: var(--ff-display);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: 0.005em;
  color: var(--chalk);
}

p { margin: 0 0 1em; }

a {
  color: var(--sand);
  text-decoration: none;
  transition: color var(--ease), border-color var(--ease);
}

a:hover { color: var(--chalk); }

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

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

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

hr { border: 0; }

table { border-collapse: collapse; }

:focus-visible {
  outline: 2px solid var(--sand);
  outline-offset: 3px;
}

::selection {
  background: var(--sand);
  color: var(--pitch-deep);
}

/* ---------- 跳转链接 ---------- */
.yk-skip {
  position: fixed;
  left: -9999px;
  top: 0;
  z-index: 200;
  display: inline-block;
  padding: 12px 20px;
  background: var(--sand);
  color: var(--pitch-deep);
  border: 2px solid var(--pitch-deep);
  font-family: var(--ff-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-decoration: none;
}

.yk-skip:focus {
  left: 12px;
  top: 12px;
  color: var(--pitch-deep);
}

/* ---------- 容器 ---------- */
.yk-container {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* ============================================================
   页头
   ============================================================ */
.yk-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background-color: var(--pitch-deep);
  border-bottom: 2px solid var(--line-green);
  transition: border-color var(--ease);
}

.yk-header[data-scrolled] {
  border-bottom-color: var(--sand);
}

.yk-header__bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  min-height: var(--header-h);
  padding: 14px var(--gutter);
  transition: min-height var(--ease), padding var(--ease);
}

.yk-header[data-scrolled] .yk-header__bar {
  min-height: var(--header-h-sm);
  padding-top: 6px;
  padding-bottom: 6px;
}

/* 品牌 */
.yk-brand {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1px;
  min-width: 0;
  text-decoration: none;
  color: var(--chalk);
}

.yk-brand__latin {
  display: block;
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: 2.15rem;
  line-height: 0.94;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--chalk);
  transition: font-size var(--ease), color var(--ease);
}

.yk-brand:hover .yk-brand__latin { color: var(--sand); }

.yk-brand__cn {
  display: block;
  font-size: 0.7rem;
  line-height: 1.3;
  letter-spacing: 0.3em;
  color: var(--dust);
  transition: opacity var(--ease);
}

.yk-brand__rule {
  display: block;
  width: 100%;
  min-width: 108px;
  height: 3px;
  margin-top: 7px;
  background: var(--pitch-mid);
  overflow: hidden;
}

.yk-brand__rule i {
  display: block;
  width: 62%;
  height: 3px;
  background: var(--sand);
  transition: width var(--ease);
}

.yk-header[data-scrolled] .yk-brand__latin { font-size: 1.5rem; }
.yk-header[data-scrolled] .yk-brand__cn { opacity: 0.7; }
.yk-header[data-scrolled] .yk-brand__rule { margin-top: 4px; }

/* 移动导航按钮 */
.yk-burger {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 2px solid var(--line-green);
  background: var(--pitch-night);
  color: var(--chalk);
  font-family: var(--ff-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.yk-burger:hover { border-color: var(--sand); color: var(--sand); }

.yk-burger__box {
  display: block;
  width: 18px;
}

.yk-burger__box i {
  display: block;
  height: 2px;
  margin: 4px 0;
  background: currentColor;
  transition: transform var(--ease), opacity var(--ease);
}

.yk-burger[aria-expanded="true"] .yk-burger__box i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.yk-burger[aria-expanded="true"] .yk-burger__box i:nth-child(2) { opacity: 0; }
.yk-burger[aria-expanded="true"] .yk-burger__box i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* 导航 */
.yk-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.6vw, 40px);
}

.yk-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(14px, 1.9vw, 28px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.yk-nav__link {
  position: relative;
  display: inline-block;
  padding: 6px 0;
  color: var(--dust);
  font-size: 0.93rem;
  letter-spacing: 0.07em;
  white-space: nowrap;
  text-decoration: none;
}

.yk-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--sand);
  transition: width var(--ease);
}

.yk-nav__link:hover { color: var(--chalk); }
.yk-nav__link:hover::after { width: 100%; }

.yk-nav__link[aria-current="page"] { color: var(--chalk); }

.yk-nav__link[aria-current="page"]::after {
  width: 100%;
  background: var(--sand);
}

.yk-nav__link[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: -11px;
  top: 50%;
  width: 4px;
  height: 4px;
  background: var(--sand);
  transform: translateY(-50%);
}

/* 行动按钮 */
.yk-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 20px;
  border: 2px solid var(--sand);
  background: transparent;
  color: var(--sand);
  font-family: var(--ff-mono);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  white-space: nowrap;
  text-decoration: none;
  transition: background-color var(--ease), color var(--ease), transform 120ms ease, border-color var(--ease);
}

.yk-cta:hover {
  background: var(--sand);
  color: var(--pitch-deep);
}

.yk-cta:active { transform: translate(2px, 2px); }

/* 滚动进度 */
.yk-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: transparent;
  pointer-events: none;
}

.yk-progress span {
  display: block;
  height: 3px;
  width: calc(var(--read, 0) * 100%);
  background: var(--sand);
}

/* ============================================================
   页脚
   ============================================================ */
.yk-footer {
  margin-top: 72px;
  background: var(--pitch-deep);
  border-top: 2px solid var(--line-green);
  color: var(--dust);
}

/* 赛季刻度带 */
.yk-ticker {
  background: var(--pitch-night);
  border-bottom: 2px solid var(--line-green);
}

.yk-ticker__inner {
  padding-top: 20px;
  padding-bottom: 18px;
}

.yk-ticker__label {
  margin: 0 0 12px;
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--dust);
}

.yk-ticker__label span { color: var(--sand); }

.yk-ticker__seasons {
  display: grid;
  grid-template-columns: repeat(10, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-green);
  border-bottom: 1px solid var(--pitch-mid);
}

.yk-ticker__seasons li {
  position: relative;
  padding: 10px 4px 12px 8px;
  border-left: 1px solid var(--pitch-mid);
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--dust);
}

.yk-ticker__seasons li:first-child { border-left: 0; }

.yk-ticker__seasons li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 1px;
  height: 7px;
  background: var(--line-green);
}

.yk-ticker__seasons li:first-child::before { background: var(--sand); }

.yk-ticker__range {
  margin: 12px 0 0;
  font-family: var(--ff-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--dust);
}

/* 页脚主体 */
.yk-footer__main {
  display: grid;
  grid-template-columns: minmax(200px, 1fr) minmax(0, 2.4fr);
  gap: 36px;
  padding-top: 44px;
  padding-bottom: 36px;
}

.yk-footer__brand { min-width: 0; }

.yk-footer__latin {
  margin: 0;
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: 2.6rem;
  line-height: 0.9;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--chalk);
}

.yk-footer__cn {
  margin: 8px 0 0;
  font-size: 0.74rem;
  letter-spacing: 0.3em;
  color: var(--dust);
}

.yk-footer__meta {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 2px solid var(--line-green);
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  line-height: 1.7;
  letter-spacing: 0.08em;
  color: var(--dust);
  max-width: 26ch;
}

.yk-footer__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.yk-col { min-width: 0; }

.yk-col__title {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--line-green);
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--chalk);
}

.yk-col__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.yk-col__list li { margin: 0 0 2px; }

.yk-index__item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 6px 0;
  font-size: 0.9rem;
  color: var(--dust);
}

.yk-index__no {
  flex: 0 0 auto;
  font-family: var(--ff-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--line-green);
}

.yk-col__link {
  display: inline-block;
  padding: 6px 0;
  color: var(--chalk);
  font-size: 0.9rem;
  border-bottom: 2px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.yk-col__link:hover {
  color: var(--sand);
  border-bottom-color: var(--sand);
}

/* 页脚底部 */
.yk-footer__base {
  padding-top: 24px;
  padding-bottom: 36px;
  border-top: 2px solid var(--pitch-mid);
}

.yk-footer__contact {
  margin: 0 0 8px;
  font-family: var(--ff-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  line-height: 1.9;
  color: var(--chalk);
  word-break: break-word;
}

.yk-footer__contact span[aria-hidden] { color: var(--line-green); }

.yk-footer__note {
  max-width: 68ch;
  margin: 0 0 20px;
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--dust);
}

.yk-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  padding-top: 16px;
  border-top: 1px solid var(--pitch-mid);
  font-family: var(--ff-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--dust);
}

.yk-footer__legal a {
  color: var(--dust);
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.yk-footer__legal a:hover {
  color: var(--sand);
  border-bottom-color: var(--sand);
}

.yk-footer__icp { color: var(--dust); }

.yk-footer__copy {
  margin-left: auto;
  color: var(--dust);
}

/* ============================================================
   通用按钮
   ============================================================ */
.yk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  border: 2px solid var(--sand);
  background: transparent;
  color: var(--sand);
  font-family: var(--ff-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background-color var(--ease), color var(--ease), border-color var(--ease), transform 120ms ease;
}

.yk-btn:hover {
  background: var(--sand);
  color: var(--pitch-deep);
}

.yk-btn:active { transform: translate(2px, 2px); }

.yk-btn--solid {
  background: var(--sand);
  color: var(--pitch-deep);
  border-color: var(--sand);
}

.yk-btn--solid:hover {
  background: var(--chalk);
  border-color: var(--chalk);
  color: var(--pitch-deep);
}

.yk-btn--ghost {
  border-color: var(--line-green);
  color: var(--chalk);
}

.yk-btn--ghost:hover {
  background: var(--pitch-mid);
  border-color: var(--sand);
  color: var(--sand);
}

/* ============================================================
   面包屑
   ============================================================ */
.yk-breadcrumb {
  padding: 16px 0;
  border-bottom: 1px solid var(--pitch-mid);
}

.yk-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dust);
}

.yk-breadcrumb li + li::before {
  content: "／";
  margin-right: 10px;
  color: var(--line-green);
}

.yk-breadcrumb a {
  color: var(--dust);
  border-bottom: 1px solid transparent;
}

.yk-breadcrumb a:hover {
  color: var(--sand);
  border-bottom-color: var(--sand);
}

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

/* ============================================================
   正文容器
   ============================================================ */
.yk-prose {
  max-width: 68ch;
  color: var(--dust);
  font-size: 17px;
  line-height: 1.75;
}

.yk-prose h2,
.yk-prose h3 { color: var(--chalk); }

.yk-prose h2 { margin-top: 1.8em; font-size: 1.7rem; }
.yk-prose h3 { margin-top: 1.5em; font-size: 1.25rem; }

.yk-prose strong { color: var(--chalk); font-weight: 600; }

.yk-prose a {
  color: var(--sand);
  border-bottom: 2px solid var(--line-green);
}

.yk-prose a:hover { border-bottom-color: var(--sand); }

.yk-prose ul,
.yk-prose ol { padding-left: 1.3em; }

.yk-prose li { margin-bottom: 0.4em; }

.yk-rule {
  height: 2px;
  margin: 32px 0;
  background: var(--line-green);
}

/* ============================================================
   网格
   ============================================================ */
.yk-grid {
  display: grid;
  gap: 22px;
}

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

/* ============================================================
   数据与内容组件
   ============================================================ */
.yk-panel {
  padding: 22px 24px;
  border: var(--edge);
  background: var(--pitch-night);
}

.yk-panel > :last-child { margin-bottom: 0; }

.yk-scoreboard {
  padding: 22px 24px;
  border: 2px solid var(--sand);
  background: var(--pitch-deep);
  box-shadow: var(--hard-shadow-lg);
}

.yk-scoreboard__label {
  margin: 0 0 10px;
  font-family: var(--ff-mono);
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--dust);
}

.yk-scoreboard__value {
  display: block;
  margin: 0;
  font-family: var(--ff-mono);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--sand);
  font-variant-numeric: tabular-nums;
}

.yk-scoreboard__unit {
  display: inline-block;
  margin-left: 8px;
  font-family: var(--ff-body);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--dust);
}

.yk-num {
  font-family: var(--ff-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.yk-lane {
  display: flex;
  width: 100%;
  height: 12px;
  border: 1px solid var(--line-green);
  background: var(--pitch-night);
}

.yk-lane__seg { flex: 1 1 0; }
.yk-lane__seg--top { background: var(--sand); }
.yk-lane__seg--mid { background: var(--line-green); }
.yk-lane__seg--mid2 { background: var(--pitch-mid); }
.yk-lane__seg--drop { background: var(--flag-red); }

.yk-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  font-variant-numeric: tabular-nums;
}

.yk-table th,
.yk-table td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid var(--pitch-mid);
  vertical-align: baseline;
}

.yk-table thead th {
  border-bottom: 2px solid var(--line-green);
  font-family: var(--ff-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dust);
  white-space: nowrap;
}

.yk-table tbody tr { transition: background-color var(--ease); }

.yk-table tbody tr:hover { background: var(--pitch-mid); }

.yk-table .yk-num { font-size: 1.05rem; color: var(--chalk); }

.yk-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid var(--line-green);
  background: var(--pitch-deep);
  font-family: var(--ff-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dust);
  white-space: nowrap;
}

.yk-tag--sand { border-color: var(--sand); color: var(--sand); }
.yk-tag--yellow { border-color: var(--flag-yellow); color: var(--flag-yellow); }
.yk-tag--red { border-color: var(--flag-red); color: var(--flag-red); }

.yk-flag {
  display: inline-block;
  width: 10px;
  height: 14px;
  vertical-align: -2px;
  margin-right: 6px;
}

.yk-flag--yellow { background: var(--flag-yellow); }
.yk-flag--red { background: var(--flag-red); }

details.yk-fold {
  border: var(--edge);
  background: var(--pitch-night);
  padding: 0;
}

details.yk-fold > summary {
  padding: 14px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--ff-mono);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--chalk);
  border-bottom: 2px solid transparent;
  transition: color var(--ease), border-color var(--ease), background-color var(--ease);
}

details.yk-fold > summary::-webkit-details-marker { display: none; }

details.yk-fold > summary::before {
  content: "＋";
  margin-right: 10px;
  color: var(--sand);
}

details.yk-fold[open] > summary {
  border-bottom-color: var(--line-green);
  background: var(--pitch-mid);
}

details.yk-fold[open] > summary::before { content: "－"; }

details.yk-fold > summary:hover { color: var(--sand); }

.yk-fold__body { padding: 18px; }

/* ============================================================
   图片容器基础规则（无远程资源，供页面阶段放占位或内联 SVG）
   ============================================================ */
.yk-figure {
  position: relative;
  margin: 0;
  border: var(--edge);
  background: var(--pitch-night);
  overflow: hidden;
}

.yk-figure__media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: linear-gradient(160deg, var(--pitch-mid) 0%, var(--pitch-deep) 100%);
}

.yk-figure__media > img,
.yk-figure__media > svg {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.yk-figure__media > img {
  filter: saturate(0.62) contrast(1.06) brightness(0.9);
}

.yk-figure__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(155, 179, 166, 0.16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(155, 179, 166, 0.16) 1px, transparent 1px);
  background-size: 12.5% 16.666%;
  mix-blend-mode: screen;
}

.yk-figure__round {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  padding: 6px 11px;
  border-right: 2px solid var(--line-green);
  border-bottom: 2px solid var(--line-green);
  background: var(--pitch-deep);
  font-family: var(--ff-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--sand);
}

.yk-figure__cap {
  padding: 10px 14px;
  border-top: 2px solid var(--line-green);
  background: var(--pitch-deep);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--dust);
}

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

/* ============================================================
   显现
   ============================================================ */
.yk-js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.yk-js [data-reveal][data-reveal-in] {
  opacity: 1;
  transform: none;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  :root { --gutter: 22px; }
  .yk-footer__main { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 900px) {
  :root { --header-h: 76px; }

  .yk-burger { display: inline-flex; }

  .yk-brand__latin { font-size: 1.75rem; }
  .yk-brand__cn { letter-spacing: 0.24em; }
  .yk-brand__rule { min-width: 84px; }

  .yk-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    background: var(--pitch-night);
    border-top: 2px solid var(--line-green);
    border-bottom: 2px solid var(--line-green);
    transition: max-height 260ms ease, visibility 260ms;
  }

  .yk-nav[data-open] {
    max-height: 660px;
    visibility: visible;
  }

  .yk-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 22px 0;
  }

  .yk-nav__link {
    display: block;
    padding: 15px 0;
    border-bottom: 1px solid var(--pitch-mid);
    font-size: 1rem;
    letter-spacing: 0.1em;
  }

  .yk-nav__link::after { display: none; }

  .yk-nav__link[aria-current="page"] {
    color: var(--sand);
    padding-left: 14px;
  }

  .yk-nav__link[aria-current="page"]::before {
    left: 0;
    width: 6px;
    height: 6px;
  }

  .yk-nav .yk-cta {
    margin: 18px 22px 24px;
  }

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

@media (max-width: 720px) {
  body { font-size: 16px; }

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

  .yk-ticker__seasons { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .yk-ticker__seasons li:nth-child(6) { border-left: 0; }
  .yk-ticker__seasons li:nth-child(6)::before { background: var(--sand); }

  .yk-figure__media { aspect-ratio: 4 / 3; }
  .yk-figure--wide .yk-figure__media { aspect-ratio: 16 / 9; }

  .yk-footer__copy { margin-left: 0; width: 100%; }
}

@media (max-width: 560px) {
  .yk-grid--2,
  .yk-grid--3 { grid-template-columns: minmax(0, 1fr); }

  .yk-footer__cols { grid-template-columns: minmax(0, 1fr); gap: 22px; }

  .yk-brand__cn { font-size: 0.64rem; letter-spacing: 0.18em; }
  .yk-footer__latin { font-size: 2rem; }

  .yk-burger__text { display: none; }
}

/* ============================================================
   减少动态
   ============================================================ */
@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;
  }

  .yk-js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}