/* ==========================================================================
   博尊体育主站 — 共享站点样式 /assets/site.css
   看台墨绿 + 夜场暖白 + 信号橙
   ========================================================================== */

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

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

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

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

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

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

a { color: inherit; text-decoration: none; }

input, textarea, select { font: inherit; color: inherit; }

/* 2. 设计变量 -------------------------------------------------------------- */
:root {
  --ink: #0B1F1A;
  --ink-deep: #071512;
  --ink-2: #12332B;
  --seat: #1C4A3E;
  --paper: #F4EEDF;
  --paper-2: #E8DFC8;
  --signal: #FF7A1A;
  --signal-dark: #1B1006;
  --danger: #C43A2F;
  --mute: #9FB8AE;
  --line: #2E6B58;
  --glow: #FFD9B0;

  --font-display: "Oswald", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "HarmonyOS Sans SC", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --gutter: clamp(16px, 4vw, 48px);
  --maxw: 1320px;
  --radius-soft: 22px;
  --radius-organic: 26px 26px 96px 26px;

  --dur: 180ms;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

/* 3. 基础排版 -------------------------------------------------------------- */
body {
  min-height: 100vh;
  background-color: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: clamp(16px, 0.45vw + 14px, 18px);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

h1 { font-size: clamp(56px, 9vw, 132px); }
h2 { font-size: clamp(32px, 4.4vw, 48px); }
h3 { font-size: clamp(20px, 2vw, 24px); letter-spacing: -0.01em; }
h4 { font-size: clamp(17px, 1.4vw, 20px); letter-spacing: 0; }

p { max-width: 42em; }

.mono {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

::selection {
  background: var(--signal);
  color: var(--signal-dark);
}

/* 4. 焦点与无障碍 ---------------------------------------------------------- */
:where(a, button, [tabindex]):focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 4px;
  border-radius: 3px;
}

#main-content { scroll-margin-top: 128px; }

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--signal);
  color: var(--signal-dark);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  transform: translateY(-180%);
  transition: transform var(--dur) var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible { transform: translateY(0); }

/* 5. 布局容器 -------------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* 6. 页头 ------------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background-color: var(--ink);
  border-bottom: 1px solid var(--line);
  isolation: isolate;
}

/* 6.1 上层品牌说明带 */
.header-rail {
  background-color: var(--ink-2);
  border-bottom: 1px solid rgba(46, 107, 88, 0.45);
}

.header-rail__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 40px;
  padding-block: 5px;
}

.header-rail__note {
  max-width: none;
  font-size: 12.5px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--mute);
}

.rail-utils {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-inline-start: auto;
}

.rail-utils a {
  display: inline-block;
  padding: 4px 11px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--paper-2);
  transition: color var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.rail-utils a:hover,
.rail-utils a:focus-visible {
  color: var(--signal-dark);
  background-color: var(--glow);
  border-color: var(--glow);
}

/* 6.2 下层栏目带 */
.header-main { background-color: var(--ink); }

.header-main__inner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 24px);
  min-height: 70px;
  padding-block: 8px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

.brand__mark {
  width: 10px;
  height: 28px;
  flex: none;
  background: linear-gradient(180deg, var(--signal) 0%, var(--signal) 62%, var(--glow) 100%);
  border-radius: 3px 3px 3px 14px;
  transition: transform var(--dur) var(--ease);
}

.brand:hover .brand__mark { transform: scaleY(1.12); }

.brand__name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.brand__tag {
  padding-left: 10px;
  border-left: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mute);
}

.primary-nav { margin-inline: auto; }

.primary-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  counter-reset: navidx;
}

.primary-nav__item { counter-increment: navidx; }

.primary-nav__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 9px 12px;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--paper-2);
  transition: color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}

.primary-nav__link::before {
  content: counter(navidx, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--mute);
  transform: translateY(-0.35em);
  transition: color var(--dur) var(--ease);
}

.primary-nav__link:hover,
.primary-nav__link:focus-visible {
  color: var(--paper);
  background-color: var(--seat);
}

.primary-nav__link:hover::before,
.primary-nav__link:focus-visible::before { color: var(--signal); }

.primary-nav__link[aria-current="page"] {
  color: var(--glow);
  background-color: var(--seat);
}

.primary-nav__link[aria-current="page"]::before { color: var(--signal); }

.primary-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background-color: var(--signal);
}

/* 6.3 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background-color: var(--seat);
  color: var(--paper);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}

.nav-toggle:hover,
.nav-toggle:focus-visible { border-color: var(--signal); }

.nav-toggle__bars {
  position: relative;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background-color: currentColor;
  transition: background-color var(--dur) var(--ease);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background-color: currentColor;
  transition: transform var(--dur) var(--ease);
}

.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background-color: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-6px) rotate(-45deg); }

.nav-toggle__text { line-height: 1; }

/* 6.4 滚动进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--signal) 0%, var(--glow) 100%);
  pointer-events: none;
  will-change: transform;
}

/* 7. 通用按钮 -------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
  text-align: center;
  transition: transform var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--signal {
  background-color: var(--signal);
  color: var(--signal-dark);
  box-shadow: 0 10px 26px -14px rgba(255, 122, 26, 0.9);
}

.btn--signal:hover { background-color: #FF8F3D; }

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

.btn--ghost:hover {
  border-color: var(--signal);
  color: var(--glow);
  background-color: rgba(255, 122, 26, 0.08);
}

.header-cta {
  flex: none;
  padding: 10px 20px;
  font-size: 14px;
}

/* 8. 页脚 ------------------------------------------------------------------ */
.site-footer {
  position: relative;
  overflow: hidden;
  background-color: var(--ink-2);
  border-top: 1px solid var(--line);
  padding-top: clamp(36px, 6vw, 72px);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 60%;
  width: 220px;
  background-image: repeating-linear-gradient(
    102deg,
    rgba(46, 107, 88, 0.42) 0 2px,
    transparent 2px 16px
  );
  opacity: 0.55;
  pointer-events: none;
}

.site-footer::after {
  content: "";
  position: absolute;
  top: -160px;
  right: -140px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle at 42% 46%, rgba(255, 122, 26, 0.18), transparent 66%);
  pointer-events: none;
}

.footer-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) repeat(3, minmax(110px, 0.75fr));
  gap: clamp(24px, 4vw, 56px);
  padding-bottom: clamp(30px, 5vw, 54px);
}

.footer-brand { min-width: 0; }

.footer-brand__name {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.footer-brand__line {
  max-width: 28ch;
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mute);
}

.footer-legacy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  padding: 9px 16px;
  border: 1px dashed var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--glow);
  transition: border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              color var(--dur) var(--ease);
}

.footer-legacy:hover,
.footer-legacy:focus-visible {
  border-color: var(--signal);
  background-color: rgba(255, 122, 26, 0.12);
  color: var(--paper);
}

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

.footer-col__title {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--signal);
  line-height: 1.4;
}

.footer-col__list {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.footer-col__list a {
  display: inline-block;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--paper-2);
  transition: color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}

.footer-col__list a:hover,
.footer-col__list a:focus-visible {
  color: var(--glow);
  transform: translateX(3px);
}

.footer-contact {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 18px 32px;
  padding-block: 26px;
  border-top: 1px solid rgba(46, 107, 88, 0.45);
  border-bottom: 1px solid rgba(46, 107, 88, 0.45);
}

.footer-contact__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--mute);
}

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

.footer-contact__value--mono {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.01em;
  font-variant-numeric: tabular-nums;
}

.footer-contact__link {
  align-self: flex-start;
  color: var(--glow);
  text-decoration: underline;
  text-decoration-color: var(--line);
  text-underline-offset: 4px;
  transition: color var(--dur) var(--ease),
              text-decoration-color var(--dur) var(--ease);
}

.footer-contact__link:hover,
.footer-contact__link:focus-visible {
  color: var(--signal);
  text-decoration-color: var(--signal);
}

.footer-note {
  position: relative;
  z-index: 1;
  max-width: 70ch;
  padding-top: 18px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mute);
}

.footer-base {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 16px 28px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: var(--mute);
}

.footer-base__copy { max-width: none; }
.footer-base__icp { max-width: none; }

/* 9. 正文容器 -------------------------------------------------------------- */
.prose { max-width: 42em; }

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

.prose p { max-width: none; color: var(--paper-2); }

.prose h2 {
  margin-top: 1.9em;
  font-size: clamp(24px, 2.4vw, 32px);
  color: var(--paper);
}

.prose h3 {
  margin-top: 1.6em;
  font-size: clamp(19px, 1.8vw, 23px);
  color: var(--paper);
}

.prose ul,
.prose ol {
  display: grid;
  gap: 0.5em;
  padding-left: 1.2em;
  list-style: disc;
  list-style-position: outside;
}

.prose ol { list-style: decimal; }

.prose li { color: var(--paper-2); }

.prose a {
  color: var(--glow);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--line);
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease),
              text-decoration-color var(--dur) var(--ease);
}

.prose a:hover,
.prose a:focus-visible {
  color: var(--signal);
  text-decoration-color: var(--signal);
}

.prose strong { color: var(--paper); font-weight: 700; }

/* 10. 网格 ----------------------------------------------------------------- */
.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}

.grid--gap-lg { gap: clamp(24px, 4vw, 56px); }

/* 11. 面包屑 --------------------------------------------------------------- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mute);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--line);
}

.breadcrumb a {
  color: var(--paper-2);
  transition: color var(--dur) var(--ease);
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible { color: var(--signal); }

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

/* 12. 图片容器（页面阶段放 <img>） ----------------------------------------- */
.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border: 1px solid rgba(46, 107, 88, 0.6);
  border-radius: var(--radius-soft);
  background-color: var(--seat);
}

.img-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 240ms var(--ease);
}

.img-frame:hover > img { transform: scale(1.03); }

.img-frame--wide {
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-soft);
}

.img-frame--tall {
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-organic);
}

/* 13. 状态标签 ------------------------------------------------------------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid rgba(46, 107, 88, 0.85);
  border-radius: 999px;
  background-color: var(--seat);
  color: var(--paper-2);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1.6;
}

.tag--signal {
  background-color: var(--signal);
  border-color: var(--signal);
  color: var(--signal-dark);
}

.tag--danger {
  background-color: var(--danger);
  border-color: var(--danger);
  color: var(--paper);
}

/* 14. 响应式 --------------------------------------------------------------- */
@media (max-width: 1023px) {
  .nav-toggle { display: inline-flex; order: 3; }

  .brand { margin-inline-end: auto; }

  .header-main__inner { min-height: 64px; }

  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    margin: 0;
    padding: 10px var(--gutter) 22px;
    background-color: var(--ink-2);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 26px 44px -26px rgba(0, 0, 0, 0.9);
  }

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

  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .primary-nav__link {
    padding: 13px 12px;
    border-bottom: 1px solid rgba(46, 107, 88, 0.35);
    border-radius: 0;
    font-size: 16px;
  }

  .primary-nav__link::before { transform: none; font-size: 11px; }

  .primary-nav__link[aria-current="page"]::after {
    left: auto;
    right: 12px;
    top: 50%;
    bottom: auto;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    transform: translateY(-50%);
  }

  .header-cta { padding: 9px 16px; font-size: 13.5px; }
}

@media (max-width: 900px) {
  .header-cta { display: none; }

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

  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .site-footer::before {
    left: auto;
    right: 0;
    width: 120px;
    opacity: 0.35;
  }

  .footer-contact { padding-block: 22px; }

  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .header-rail__note { display: none; }
  .brand__tag { display: none; }
  .rail-utils a { padding: 4px 9px; font-size: 11px; }
}

@media (max-width: 520px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-base { flex-direction: column; align-items: flex-start; }
}

/* 15. 动效降级 ------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .btn:hover,
  .brand:hover .brand__mark,
  .img-frame:hover > img,
  .footer-col__list a:hover { transform: none; }

  .scroll-progress { display: none; }
}