/* =====================================================================
   YABO赛场 · 共享站点套件 /assets/site.css
   深夜记分牌体系：刻度框架 · 非对称分栏 · 等宽数据 · 微交互状态
   ===================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
  --c-ink: #07111F;
  --c-ink-2: #0D1B2E;
  --c-line: #1B2B44;
  --c-paper: #F4EFE6;
  --c-mist: #9AA9BF;
  --c-text-soft: #CBD5E4;
  --c-mint: #35F2C0;
  --c-amber: #FFB547;
  --c-rose: #FF4D8D;
  --c-electric: #5B8CFF;
  --c-deep-teal: #0F3B35;

  --font-head: 'Arial Narrow', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-body: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-num: 'SFMono-Regular', 'Roboto Mono', 'Consolas', 'Menlo', monospace;

  --gutter: clamp(1rem, 4vw, 3rem);
  --shell-max: 1264px;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;

  --t: 180ms;
  --ease: cubic-bezier(.22, .61, .36, 1);

  --yb-header-h: 84px;
  --yb-progress: 0;
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
h1, h2, h3, h4, h5 { font-weight: 700; line-height: 1.15; }
hr { border: 0; }

:focus-visible {
  outline: 2px solid var(--c-mint);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  background:
    radial-gradient(120% 78% at 84% -12%, rgba(91, 140, 255, .16), transparent 62%),
    radial-gradient(92% 58% at 6% -4%, rgba(53, 242, 192, .10), transparent 58%),
    var(--c-ink);
  color: var(--c-paper);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: rgba(255, 181, 71, .28);
  color: var(--c-paper);
}

.yb-eyebrow {
  display: inline-block;
  font-family: var(--font-num);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--c-mint);
}

.yb-title-xl {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.6rem, 6vw, 6.4rem);
  line-height: .94;
  letter-spacing: -.02em;
}

.yb-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.6rem, 3vw, 2.8rem);
  line-height: 1.06;
  letter-spacing: -.015em;
}

.yb-title-sm {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.12rem, 1.7vw, 1.45rem);
  line-height: 1.22;
  letter-spacing: -.01em;
}

.yb-lead {
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
  line-height: 1.7;
  color: rgba(244, 239, 230, .86);
  max-width: 60ch;
}

.yb-text {
  color: rgba(244, 239, 230, .82);
  max-width: 68ch;
}

.yb-muted { color: var(--c-mist); }

.yb-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

.yb-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 4. 布局容器 ---------- */
.yb-main {
  display: block;
  scroll-margin-top: calc(var(--yb-header-h) + 1rem);
}

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

.yb-section { padding-block: clamp(2.4rem, 6vw, 5rem); }

.yb-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: .6rem 1.5rem;
  margin-bottom: clamp(1.2rem, 2.5vw, 2rem);
}

.yb-stack { display: grid; gap: var(--stack-gap, 1.1rem); }

.yb-grid { display: grid; gap: clamp(1rem, 2vw, 1.4rem); }
.yb-grid--auto { grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); }
.yb-grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

@media (max-width: 900px) {
  .yb-grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .yb-grid--12 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.yb-rule { height: 1px; background: var(--c-line); }

.yb-tickline {
  height: 8px;
  background-image: repeating-linear-gradient(90deg, var(--c-line) 0 1px, transparent 1px 14px);
  opacity: .9;
}

/* ---------- 5. Skip link ---------- */
.yb-skip {
  position: absolute;
  left: 50%;
  top: 0;
  z-index: 120;
  transform: translate(-50%, -130%);
  padding: .7rem 1.2rem;
  background: var(--c-amber);
  color: #161008;
  font-weight: 700;
  font-size: .9rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: transform var(--t) var(--ease);
}
.yb-skip:focus-visible { transform: translate(-50%, 0); }

/* ---------- 6. 头部框架 ---------- */
.yb-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(7, 17, 31, .98), rgba(7, 17, 31, .90));
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-line);
}

.yb-header__rule {
  height: 6px;
  background-image: repeating-linear-gradient(90deg, rgba(53, 242, 192, .5) 0 1px, transparent 1px 26px);
  border-bottom: 1px solid rgba(27, 43, 68, .7);
}

.yb-header__inner {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.yb-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  min-height: 76px;
}

/* 品牌 */
.yb-brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  min-width: 0;
  color: var(--c-paper);
}
.yb-brand__mark {
  position: relative;
  flex: none;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(53, 242, 192, .55);
  border-radius: 10px;
  background: linear-gradient(160deg, rgba(15, 59, 53, .9), rgba(7, 17, 31, .92));
  color: var(--c-mint);
  font-family: var(--font-num);
  font-size: .82rem;
  letter-spacing: .04em;
  transition: border-color var(--t) var(--ease), color var(--t) var(--ease);
}
.yb-brand__mark::after {
  content: "";
  position: absolute;
  top: -3px;
  right: -3px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-rose);
}
.yb-brand:hover .yb-brand__mark { border-color: var(--c-mint); }
.yb-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  min-width: 0;
}
.yb-brand__name {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.16rem;
  letter-spacing: -.01em;
}
.yb-brand__tag {
  margin-top: .18rem;
  font-size: .68rem;
  letter-spacing: .14em;
  color: var(--c-mist);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 移动菜单按钮 */
.yb-nav-toggle {
  display: none;
  align-items: center;
  gap: .55rem;
  padding: .55rem .85rem;
  border: 1px solid var(--c-line);
  border-radius: 10px;
  color: var(--c-paper);
  font-size: .82rem;
  letter-spacing: .08em;
  transition: border-color var(--t) var(--ease), color var(--t) var(--ease);
}
.yb-nav-toggle:hover { border-color: var(--c-mint); color: var(--c-mint); }
.yb-nav-toggle__bars { display: grid; gap: 4px; width: 18px; }
.yb-nav-toggle__bars i {
  display: block;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--t) var(--ease), opacity var(--t) var(--ease);
}
.yb-nav-toggle__label { line-height: 1; }

[data-header][data-open="true"] .yb-nav-toggle { border-color: var(--c-rose); color: var(--c-paper); }
[data-header][data-open="true"] .yb-nav-toggle__bars i:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
[data-header][data-open="true"] .yb-nav-toggle__bars i:nth-child(2) { opacity: 0; }
[data-header][data-open="true"] .yb-nav-toggle__bars i:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* 导航 */
.yb-nav { display: block; }
.yb-nav__list {
  display: flex;
  align-items: center;
  gap: .1rem;
  counter-reset: navidx;
}
.yb-nav__list > li {
  counter-increment: navidx;
  position: relative;
}
.yb-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: .4rem;
  padding: .62rem .7rem;
  font-size: .88rem;
  line-height: 1.2;
  color: var(--c-text-soft);
  transition: color var(--t) var(--ease);
}
.yb-nav__link::before {
  content: counter(navidx, decimal-leading-zero);
  font-family: var(--font-num);
  font-size: .6rem;
  letter-spacing: .08em;
  color: rgba(154, 169, 191, .72);
  transition: color var(--t) var(--ease);
}
.yb-nav__link::after {
  content: "";
  position: absolute;
  left: .7rem;
  right: .7rem;
  bottom: .3rem;
  height: 1px;
  background: var(--c-mint);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t) var(--ease), background-color var(--t) var(--ease);
}
.yb-nav__link:hover { color: var(--c-paper); }
.yb-nav__link:hover::after { transform: scaleX(1); }
.yb-nav__link[aria-current="page"] { color: var(--c-amber); }
.yb-nav__link[aria-current="page"]::before { color: var(--c-amber); }
.yb-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--c-amber);
}

/* 滚动进度 */
.yb-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  transform: scaleX(var(--yb-progress, 0));
  transform-origin: left center;
  background: linear-gradient(90deg, var(--c-mint), var(--c-amber) 62%, var(--c-rose));
  box-shadow: 0 0 12px rgba(53, 242, 192, .45);
  pointer-events: none;
  transition: transform 120ms linear;
}

/* ---------- 7. 移动导航状态 ---------- */
@media (max-width: 900px) {
  .yb-nav-toggle { display: inline-flex; }

  .yb-nav {
    position: fixed;
    inset: var(--yb-header-h, 84px) 0 0 0;
    z-index: 55;
    display: flex;
    flex-direction: column;
    padding: 1.2rem var(--gutter) 2.4rem;
    background: linear-gradient(180deg, rgba(13, 27, 46, .99), rgba(7, 17, 31, .99));
    border-top: 1px solid var(--c-line);
    border-left: 1px solid var(--c-line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    transition: opacity var(--t) var(--ease), transform var(--t) var(--ease), visibility var(--t) var(--ease);
  }
  [data-header][data-open="true"] .yb-nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .yb-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-top: .4rem;
  }
  .yb-nav__list > li { border-bottom: 1px solid rgba(27, 43, 68, .85); }
  .yb-nav__link {
    width: 100%;
    justify-content: flex-start;
    padding: 1rem .2rem;
    font-size: 1.06rem;
  }
  .yb-nav__link::before { font-size: .7rem; }
  .yb-nav__link::after { left: 0; right: auto; width: 100%; bottom: .6rem; }

  body.yb-menu-open { overflow: hidden; }
}

@media (max-width: 480px) {
  .yb-brand__tag { display: none; }
  .yb-brand__mark { width: 38px; height: 38px; font-size: .74rem; }
  .yb-header__bar { min-height: 68px; }
}

/* ---------- 8. 按钮与状态组件 ---------- */
.yb-btn {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .85rem 1.25rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: .94rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: .01em;
  transition: background-color var(--t) var(--ease), color var(--t) var(--ease),
              border-color var(--t) var(--ease), transform var(--t) var(--ease);
}
.yb-btn:active { transform: translateY(1px); }

.yb-btn--primary {
  background: var(--c-amber);
  color: #161008;
}
.yb-btn--primary:hover { background: #FFC875; }

.yb-btn--ghost {
  background: transparent;
  border-color: var(--c-line);
  color: var(--c-paper);
}
.yb-btn--ghost:hover { border-color: var(--c-mint); color: var(--c-mint); }

.yb-btn--quiet {
  padding: .6rem .85rem;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--c-line);
  font-family: var(--font-num);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--c-mist);
}
.yb-btn--quiet:hover { border-color: var(--c-electric); color: var(--c-electric); }

.yb-btn__arrow {
  font-family: var(--font-num);
  font-size: .85em;
  line-height: 1;
}

.yb-chip {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .26rem .6rem;
  border: 1px solid var(--c-line);
  border-radius: 6px;
  font-family: var(--font-num);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-mist);
  background: rgba(27, 43, 68, .32);
}
.yb-chip--mint {
  color: var(--c-mint);
  border-color: rgba(53, 242, 192, .42);
  background: rgba(15, 59, 53, .5);
}

.yb-fav {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .45rem .85rem;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  color: var(--c-mist);
  transition: border-color var(--t) var(--ease), color var(--t) var(--ease), background-color var(--t) var(--ease);
}
.yb-fav__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-line);
  transition: background-color var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.yb-fav__label {
  font-size: .78rem;
  letter-spacing: .06em;
  color: inherit;
}
.yb-fav:hover { border-color: var(--c-rose); color: var(--c-paper); }
.yb-fav[aria-pressed="true"] {
  border-color: var(--c-rose);
  background: rgba(255, 77, 141, .13);
  color: var(--c-paper);
}
.yb-fav[aria-pressed="true"] .yb-fav__dot {
  background: var(--c-rose);
  box-shadow: 0 0 0 4px rgba(255, 77, 141, .18);
}

/* ---------- 9. 卡片 / 数据 / 媒体 ---------- */
.yb-card {
  position: relative;
  padding: clamp(1.1rem, 2vw, 1.6rem);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(27, 43, 68, .52), rgba(13, 27, 46, .88));
  transition: border-color var(--t) var(--ease), background-color var(--t) var(--ease),
              transform var(--t) var(--ease);
}
.yb-card:hover {
  border-color: rgba(53, 242, 192, .45);
  transform: translateY(-2px);
}
.yb-card__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.1rem;
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--c-paper);
}
.yb-card__meta {
  margin-top: .5rem;
  font-family: var(--font-num);
  font-size: .74rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-mist);
}

.yb-stat { display: grid; gap: .3rem; }
.yb-stat__value {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.75rem, 4vw, 2.55rem);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--c-mint);
}
.yb-stat__label {
  font-size: .8rem;
  line-height: 1.5;
  color: var(--c-mist);
}

.yb-media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, var(--c-deep-teal), #0A1830 68%);
  isolation: isolate;
}
.yb-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(244, 239, 230, .06) 0 1px, transparent 1px 34px);
  pointer-events: none;
}
.yb-media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.yb-media--wide { aspect-ratio: 16 / 9; }
.yb-media--tall { aspect-ratio: 4 / 5; }
.yb-media--square { aspect-ratio: 1 / 1; }
.yb-media__caption {
  position: absolute;
  left: .8rem;
  bottom: .7rem;
  z-index: 2;
  font-family: var(--font-num);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-paper);
  background: rgba(7, 17, 31, .7);
  border: 1px solid var(--c-line);
  border-radius: 5px;
  padding: .2rem .5rem;
}

/* ---------- 10. 面包屑 ---------- */
.yb-breadcrumb { padding-top: clamp(1rem, 2.5vw, 1.6rem); }
.yb-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .15rem .4rem;
  font-family: var(--font-num);
  font-size: .74rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-mist);
}
.yb-breadcrumb__item { display: inline-flex; align-items: center; gap: .4rem; }
.yb-breadcrumb__item + .yb-breadcrumb__item::before {
  content: "/";
  color: #2C405E;
}
.yb-breadcrumb__link { transition: color var(--t) var(--ease); }
.yb-breadcrumb__link:hover { color: var(--c-mint); }
.yb-breadcrumb__item[aria-current="page"] { color: var(--c-paper); }

/* ---------- 11. 页脚 ---------- */
.yb-footer {
  position: relative;
  margin-top: clamp(3rem, 8vw, 6rem);
  background: linear-gradient(180deg, #0A1626, var(--c-ink-2));
  border-top: 1px solid var(--c-line);
  color: var(--c-text-soft);
}
.yb-footer::before {
  content: "";
  display: block;
  height: 6px;
  background-image: repeating-linear-gradient(90deg, rgba(53, 242, 192, .45) 0 1px, transparent 1px 26px);
}

.yb-footer__inner {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: clamp(2.2rem, 5vw, 3.6rem) var(--gutter) 1.6rem;
}

.yb-footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: clamp(1.6rem, 3vw, 2.6rem);
}

.yb-footer__brandname {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: -.015em;
  color: var(--c-paper);
}
.yb-footer__tagline {
  margin-top: .55rem;
  max-width: 34ch;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--c-mist);
}
.yb-footer__cta { margin-top: 1.1rem; }

.yb-footer__contact {
  display: grid;
  gap: .4rem;
  margin-top: 1.4rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--c-line);
  font-family: var(--font-num);
  font-size: .82rem;
  line-height: 1.6;
  letter-spacing: .01em;
  color: var(--c-mist);
}

.yb-footer__heading {
  margin-bottom: .9rem;
  font-family: var(--font-num);
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--c-mint);
}

.yb-footer__list { display: grid; gap: .55rem; }

.yb-footer__link {
  position: relative;
  display: inline-block;
  font-size: .92rem;
  color: var(--c-text-soft);
  transition: color var(--t) var(--ease);
}
.yb-footer__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: var(--c-mint);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t) var(--ease);
}
.yb-footer__link:hover { color: var(--c-paper); }
.yb-footer__link:hover::after { transform: scaleX(1); }

.yb-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .7rem 1.5rem;
  margin-top: clamp(1.8rem, 3vw, 2.6rem);
  padding-top: 1.2rem;
  border-top: 1px solid var(--c-line);
}
.yb-footer__legal {
  font-family: var(--font-num);
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--c-mist);
}
.yb-footer__year { color: var(--c-amber); }

@media (max-width: 900px) {
  .yb-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .yb-footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  .yb-footer__grid { grid-template-columns: minmax(0, 1fr); }
  .yb-footer__base { justify-content: flex-start; }
}

/* ---------- 12. 降级动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .yb-progress { transition: none; }
  .yb-card:hover { transform: none; }
}