/* ===================================================================
   K1体育赛事 · /assets/site.css
   共享外壳：框架式导航、底色分区、按钮、卡片、正文与图片容器
   =================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background: #06120F;
}

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

ol, ul { padding: 0; list-style: none; }

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

a { color: inherit; }

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

table { border-collapse: collapse; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #06120F;
  --ink-800: #0C211C;
  --ink-700: #143A31;
  --line: #2A3A34;
  --paper: #F4F1E8;
  --mist: #9FB0A9;
  --cyan: #35E8C8;
  --cyan-deep: #0E9C86;
  --orange: #FF7A1A;
  --orange-deep: #B8450F;

  --rail-w: 256px;
  --gutter: clamp(18px, 4vw, 44px);
  --section-gap: clamp(56px, 8vw, 96px);

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

  --shadow-hard: 6px 6px 0 rgba(0, 0, 0, .55);
  --ease: cubic-bezier(.2, .7, .3, 1);
  --dur: 180ms;
}

/* ---------- 3. 中文排版基础 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.85;
  letter-spacing: .01em;
  color: var(--paper);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(1100px 560px at 82% -12%, rgba(14, 156, 134, .16), transparent 70%),
    linear-gradient(180deg, rgba(53, 232, 200, .05), transparent 420px);
  background-repeat: no-repeat;
}

@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }
}

#main-content { scroll-margin-top: 96px; }

/* ---------- 4. 焦点与可访问性 ---------- */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.skip-link {
  position: fixed;
  left: 14px;
  top: -160px;
  z-index: 200;
  display: inline-block;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--ink-900);
  background: var(--cyan);
  border: 2px solid var(--ink-900);
  box-shadow: var(--shadow-hard);
  text-decoration: none;
  transition: top var(--dur) var(--ease);
}

.skip-link:focus { top: 14px; }

@media (min-width: 1024px) {
  .skip-link { left: calc(var(--rail-w) + 18px); }
}

/* ---------- 5. 页头 / 框架式导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  color: var(--paper);
  background: var(--ink-800);
  border-bottom: 2px solid var(--line);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  padding: 12px var(--gutter);
}

/* 品牌锁定 */
.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-right: auto;
  min-width: 0;
}

.brand__mark {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 20px;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.02em;
}

.brand__mark::before {
  content: "";
  flex: none;
  width: 8px;
  height: 20px;
  background: linear-gradient(180deg, var(--cyan), var(--orange));
}

.brand__line {
  max-width: 46vw;
  font-size: 11px;
  line-height: 1.4;
  letter-spacing: .06em;
  color: var(--mist);
}

/* 工具链接 */
.header-utility {
  display: flex;
  gap: 8px;
  order: 1;
}

.utility-link {
  display: inline-block;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
  text-decoration: none;
  border: 1px solid var(--line);
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.utility-link:hover {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* 移动菜单按钮 */
.nav-toggle {
  order: 2;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--paper);
  background: transparent;
  border: 2px solid var(--line);
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.nav-toggle:hover { color: var(--cyan); border-color: var(--cyan); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  background: currentColor;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: top var(--dur) var(--ease), transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

.nav-toggle[aria-expanded="true"] { color: var(--orange); border-color: var(--orange-deep); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: var(--orange); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); background: var(--orange); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); background: var(--orange); }

/* 导航链接（横竖屏共用语言） */
.site-nav__item { list-style: none; }

.site-nav__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px;
  font-size: 15px;
  font-weight: 500;
  color: var(--mist);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.site-nav__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan);
  opacity: .65;
}

.site-nav__link:hover {
  color: var(--paper);
  background: var(--ink-700);
  border-left-color: var(--cyan);
  transform: translateX(2px);
}

.site-nav__link[aria-current="page"] {
  color: var(--ink-900);
  background: var(--cyan);
  border-left-color: var(--orange);
  font-weight: 800;
}

.site-nav__link[aria-current="page"] .site-nav__num {
  color: var(--ink-900);
  opacity: .8;
}

/* 手机 / 平板：折叠导航 */
@media (max-width: 1023px) {
  .site-nav {
    display: none;
    order: 20;
    width: 100%;
    padding-top: 14px;
    border-top: 2px solid var(--line);
  }

  .site-nav[data-open] { display: block; }

  .site-nav__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4px;
  }

  .site-nav__link {
    padding: 11px 10px;
    font-size: 14px;
    border-left: 2px solid var(--line);
    background: var(--ink-900);
  }
}

@media (max-width: 420px) {
  .site-nav__list { grid-template-columns: 1fr; }
  .brand__line { max-width: 100%; }
}

/* 宽屏：导航柱常驻左侧，成为页面边框 */
@media (min-width: 1024px) {
  .site-header {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--rail-w);
    border-bottom: 0;
    border-right: 2px solid var(--line);
    background-image:
      repeating-linear-gradient(90deg, rgba(42, 58, 52, .38) 0 1px, transparent 1px 44px),
      linear-gradient(180deg, #0C211C 0%, #071714 100%);
    overflow: hidden;
  }

  .site-header__inner {
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    height: 100%;
    padding: 28px 20px 24px;
    gap: 0;
    overflow-y: auto;
  }

  .brand {
    margin: 0 0 22px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--line);
  }

  .brand__line { max-width: none; font-size: 12px; }

  .nav-toggle { display: none; }

  .site-nav { order: 1; flex: 1 1 auto; }
  .site-nav__list { display: flex; flex-direction: column; gap: 2px; }

  .header-utility {
    order: 2;
    margin-top: 20px;
    padding-top: 18px;
    border-top: 2px solid var(--line);
  }
}

/* ---------- 6. 页脚 ---------- */
.site-footer {
  margin-top: var(--section-gap);
  color: var(--paper);
  background-color: var(--ink-800);
  background-image:
    repeating-linear-gradient(135deg, rgba(42, 58, 52, .35) 0 1px, transparent 1px 26px);
  border-top: 2px solid var(--line);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding: clamp(32px, 6vw, 72px) var(--gutter);
}

.footer-brand__mark {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -.02em;
}

.footer-brand__mark::before {
  content: "";
  flex: none;
  width: 10px;
  height: 24px;
  background: linear-gradient(180deg, var(--cyan), var(--orange));
}

.footer-brand__summary {
  margin-top: 14px;
  max-width: 30em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--cyan);
}

.footer-nav__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 18px;
}

.footer-nav__link {
  display: inline-block;
  padding: 3px 0;
  font-size: 15px;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.footer-nav__link:hover {
  color: var(--paper);
  border-bottom-color: var(--orange);
}

.footer-contact__row {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 14px;
}

.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--mist);
}

.footer-contact__value {
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.footer-contact__note {
  margin-top: 10px;
  max-width: 34em;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 26px;
  padding-top: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
  border-top: 1px solid var(--line);
}

@media (min-width: 720px) {
  .site-footer__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
  .footer-legal { grid-column: 1 / -1; }
}

@media (min-width: 1024px) {
  .site-footer__inner { grid-template-columns: 1.25fr .9fr 1.1fr; gap: 40px; }
  .footer-brand { grid-column: auto; }
}

/* ---------- 7. 布局工具 ---------- */
.shell {
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.shell--wide { max-width: 1480px; }

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

.stack > * + * { margin-top: var(--stack-gap, 24px); }

@media (max-width: 767px) {
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; }
}

/* ---------- 8. 文字系统 ---------- */
.t-display {
  font-size: clamp(42px, 8vw, 88px);
  font-weight: 900;
  line-height: .98;
  letter-spacing: -.03em;
}

.t-h2 {
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.02em;
}

.t-h3 {
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 700;
  line-height: 1.32;
  letter-spacing: -.01em;
}

.t-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}

.t-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  flex: none;
  width: 24px;
  height: 2px;
  background: var(--orange);
}

.chapter-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: rgba(53, 232, 200, .45);
}

/* ---------- 9. 正文 ---------- */
.prose {
  max-width: 34em;
  font-size: 17px;
  line-height: 1.85;
  color: var(--paper);
}

.prose p + p { margin-top: 1.1em; }

.prose h2,
.prose h3 {
  margin-top: 1.8em;
  margin-bottom: .6em;
  line-height: 1.3;
  letter-spacing: -.01em;
}

.prose h2 { font-size: 26px; font-weight: 800; }
.prose h3 { font-size: 20px; font-weight: 700; }

.prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.prose a:hover { color: var(--orange); }

.prose ul,
.prose ol { margin: 1em 0; }

.prose li {
  position: relative;
  padding-left: 1.5em;
}

.prose li + li { margin-top: .5em; }

.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .85em;
  width: 9px;
  height: 2px;
  background: var(--orange);
}

.prose ol { counter-reset: prose-ol; }

.prose ol li::before {
  counter-increment: prose-ol;
  content: counter(prose-ol, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .1em;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 18px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mist);
}

.breadcrumb__link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.breadcrumb__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--orange);
}

.breadcrumb__sep { color: var(--line); }

.breadcrumb__current { color: var(--paper); }

/* ---------- 11. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.4;
  color: var(--paper);
  background: var(--ink-700);
  border: 2px solid transparent;
  box-shadow: var(--shadow-hard);
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, .55);
}

.btn--primary {
  color: var(--ink-900);
  background: var(--orange);
  border-color: var(--orange);
}

.btn--primary:hover {
  background: var(--cyan);
  border-color: var(--cyan);
}

.btn--ghost {
  color: var(--paper);
  background: transparent;
  border-color: var(--line);
  box-shadow: none;
}

.btn--ghost:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  box-shadow: var(--shadow-hard);
}

/* ---------- 12. 标签与状态 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  line-height: 1.6;
  color: var(--mist);
  background: transparent;
  border: 1px solid var(--line);
  text-decoration: none;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.tag:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(53, 232, 200, .08);
}

.tag--live {
  color: var(--orange);
  border-color: var(--orange-deep);
  background: rgba(255, 122, 26, .1);
}

.tag--live:hover {
  color: var(--orange);
  border-color: var(--orange);
}

.tag--ok {
  color: var(--cyan);
  border-color: var(--cyan-deep);
  background: rgba(53, 232, 200, .1);
}

.tag--ok:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
  background: rgba(53, 232, 200, .08);
  border: 1px solid var(--cyan-deep);
}

.status-pill::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  background: currentColor;
}

/* ---------- 13. 卡片 ---------- */
.card {
  position: relative;
  padding: 22px 24px;
  color: var(--paper);
  background: var(--ink-800);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, .55);
}

.card__title {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -.01em;
}

.card__meta {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
}

/* ---------- 14. 图片容器 ---------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 2px solid var(--line);
  background-color: var(--ink-700);
  background-image: repeating-linear-gradient(135deg, rgba(53, 232, 200, .07) 0 2px, transparent 2px 14px);
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media--square { aspect-ratio: 1 / 1; }
.media--portrait { aspect-ratio: 3 / 4; }
.media--wide { aspect-ratio: 21 / 9; }

.media--slant {
  clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
}

.media__caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mist);
  background: linear-gradient(0deg, rgba(6, 18, 15, .94), rgba(6, 18, 15, 0));
}

/* ---------- 15. 斜切分隔条 ---------- */
.slant-rule {
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  clip-path: polygon(0 0, 100% 0, calc(100% - 14px) 100%, 0 100%);
}

/* ---------- 16. 脚本注入的全局控件 ---------- */
.scroll-meter {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 120;
  height: 3px;
  background: rgba(42, 58, 52, .6);
  pointer-events: none;
}

.scroll-meter__bar {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  transition: width 120ms linear;
}

@media (min-width: 1024px) {
  .scroll-meter { left: var(--rail-w); }
}

.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 110;
  display: none;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ink-900);
  background: var(--cyan);
  border: 2px solid var(--ink-900);
  box-shadow: var(--shadow-hard);
  cursor: pointer;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.to-top[data-visible] { display: inline-flex; }

.to-top:hover {
  background: var(--orange);
  transform: translateY(-2px);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, .6);
}

/* ---------- 17. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  .card:hover,
  .btn:hover,
  .to-top:hover,
  .site-nav__link:hover { transform: none; }

  .scroll-meter__bar { transition: none; }
}