/* ============================================================
   88体育主站 — 共享样式 /assets/site.css
   深墨绿 · 炭黑 · 荧光青 · 警示橙 · 冷蓝到信号紫
   ============================================================ */

:root {
  --sig-ink: #07110F;
  --sig-carbon: #111417;
  --sig-paper: #F3EFE6;
  --sig-body: #E6F1EC;
  --sig-muted: #9FB7B0;
  --sig-cyan: #35F2D0;
  --sig-cyan-soft: rgba(53, 242, 208, 0.34);
  --sig-cyan-dim: rgba(53, 242, 208, 0.13);
  --sig-orange: #FF7A29;
  --sig-blue: #2E6BFF;
  --sig-violet: #7A4DFF;
  --sig-line: #C8BFA8;
  --sig-ink-text: #16211D;
  --sig-cyan-deep: #0B7A66;

  --sig-mono: ui-monospace, "JetBrains Mono", "IBM Plex Mono", Menlo, Consolas, "Courier New", monospace;
  --sig-sans: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;

  --sig-max: 1280px;
  --sig-gutter: clamp(20px, 4vw, 40px);
  --sig-measure: 40em;
  --sig-radius: 20px;
  --sig-radius-pill: 999px;
  --sig-shadow-float: 0 20px 44px -26px rgba(0, 0, 0, 0.9);
  --sig-ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--sig-ink);
  background-image:
    radial-gradient(120% 70% at 88% -10%, rgba(122, 77, 255, 0.10), transparent 60%),
    radial-gradient(90% 60% at 0% 0%, rgba(53, 242, 208, 0.06), transparent 65%);
  color: var(--sig-body);
  font-family: var(--sig-sans);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1, h2, h3, h4 {
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--sig-body);
}

:focus-visible {
  outline: 2px solid var(--sig-cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 跳转链接 ---------- */
.sig-skip {
  position: fixed;
  top: -120px;
  left: var(--sig-gutter);
  z-index: 300;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--sig-radius-pill);
  background: var(--sig-cyan);
  color: #04120F;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: top 0.2s var(--sig-ease);
}
.sig-skip:focus { top: 16px; }

/* ============================================================
   头部：悬浮胶囊浮岛
   ============================================================ */
.sig-header {
  position: sticky;
  top: 0;
  z-index: 90;
  padding: clamp(10px, 1.4vw, 18px) var(--sig-gutter);
  pointer-events: none;
}

.sig-header__shell {
  position: relative;
  pointer-events: auto;
  width: min(1240px, 100%);
  margin-inline: auto;
  background: rgba(11, 20, 17, 0.84);
  border: 1px solid var(--sig-cyan-dim);
  border-radius: var(--sig-radius-pill);
  box-shadow: var(--sig-shadow-float);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  backdrop-filter: blur(16px) saturate(150%);
  transition: background 0.24s var(--sig-ease), border-color 0.24s var(--sig-ease);
}

.sig-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.8vw, 26px);
  min-height: 74px;
  padding: 6px 10px 6px clamp(14px, 2vw, 22px);
  transition: min-height 0.24s var(--sig-ease);
}

.sig-header.is-compact .sig-header__shell {
  background: rgba(9, 17, 15, 0.94);
  border-color: var(--sig-cyan-soft);
}
.sig-header.is-compact .sig-header__inner { min-height: 58px; }

/* 滚动信号线 */
.sig-progress {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--sig-cyan) 0%, var(--sig-cyan) 62%, var(--sig-orange) 100%);
  transform: scaleX(0);
  transform-origin: left center;
  opacity: 0.85;
  pointer-events: none;
  transition: transform 0.12s linear;
}

/* 品牌 */
.sig-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex: none;
}

.sig-brand__mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  flex: none;
  border-radius: 11px;
  background: var(--sig-cyan);
  color: #04120F;
  font-family: var(--sig-mono);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.sig-brand__text { display: block; min-width: 0; }

.sig-brand__name {
  display: block;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--sig-body);
  line-height: 1.25;
}

.sig-brand__tag {
  display: block;
  font-family: var(--sig-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--sig-muted);
  line-height: 1.35;
}

/* 导航 */
.sig-nav {
  display: flex;
  align-items: center;
  margin-inline: auto;
}

.sig-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 28px);
}

.sig-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 8px 2px;
  color: var(--sig-muted);
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s var(--sig-ease);
}

.sig-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 1px;
  height: 2px;
  border-radius: 2px;
  background: var(--sig-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.22s var(--sig-ease);
}

.sig-nav__link:hover { color: var(--sig-body); }
.sig-nav__link:hover::after { transform: scaleX(1); }

.sig-nav__link[aria-current="page"] { color: var(--sig-cyan); }
.sig-nav__link[aria-current="page"]::after { transform: scaleX(1); }

.sig-nav__actions { display: none; }

/* 头部行动区 */
.sig-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

/* 移动导航按钮 */
.sig-nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 0 16px;
  border-radius: var(--sig-radius-pill);
  border: 1px solid var(--sig-cyan-soft);
  background: transparent;
  color: var(--sig-body);
  font-family: var(--sig-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: border-color 0.18s var(--sig-ease), color 0.18s var(--sig-ease);
}
.sig-nav-toggle:hover { border-color: var(--sig-cyan); color: var(--sig-cyan); }

.sig-nav-toggle__bars { display: inline-grid; gap: 4px; width: 16px; }
.sig-nav-toggle__bars span {
  display: block;
  height: 1.5px;
  width: 100%;
  background: currentColor;
  transition: transform 0.22s var(--sig-ease);
}
.sig-header[data-open="true"] .sig-nav-toggle__bars span:first-child {
  transform: translateY(2.75px) rotate(45deg);
}
.sig-header[data-open="true"] .sig-nav-toggle__bars span:last-child {
  transform: translateY(-2.75px) rotate(-45deg);
}

/* ============================================================
   通用组件
   ============================================================ */
.sig-container {
  width: min(var(--sig-max), 100%);
  margin-inline: auto;
  padding-inline: var(--sig-gutter);
}

.sig-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--sig-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sig-cyan);
}
.sig-eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--sig-cyan);
  opacity: 0.7;
}

.sig-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: var(--sig-radius-pill);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.18s var(--sig-ease), color 0.18s var(--sig-ease),
              border-color 0.18s var(--sig-ease), transform 0.18s var(--sig-ease);
}
.sig-btn:active { transform: translateY(1px); }

.sig-btn--primary {
  background: var(--sig-cyan);
  color: #04120F;
}
.sig-btn--primary:hover { background: #7CFFE6; }

.sig-btn--ghost {
  background: transparent;
  border-color: var(--sig-cyan-soft);
  color: var(--sig-body);
}
.sig-btn--ghost:hover { border-color: var(--sig-cyan); color: var(--sig-cyan); }

.sig-btn--warn {
  background: var(--sig-orange);
  color: #1A0C03;
}
.sig-btn--warn:hover { background: #FF9A5C; }

.sig-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--sig-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--sig-muted);
}
.sig-breadcrumb a {
  color: var(--sig-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(159, 183, 176, 0.4);
  transition: color 0.18s var(--sig-ease);
}
.sig-breadcrumb a:hover { color: var(--sig-cyan); text-decoration-color: var(--sig-cyan); }
.sig-breadcrumb__sep { color: rgba(159, 183, 176, 0.45); }

.sig-prose {
  max-width: var(--sig-measure);
  padding: clamp(24px, 4vw, 52px);
  border-radius: 22px;
  background: var(--sig-paper);
  color: var(--sig-ink-text);
  font-size: 17px;
  line-height: 1.9;
}
.sig-prose p + p { margin-top: 1.1em; }
.sig-prose h2, .sig-prose h3 { color: var(--sig-ink-text); margin-bottom: 0.6em; }
.sig-prose a {
  color: var(--sig-cyan-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--sig-line);
}
.sig-prose a:hover { text-decoration-color: var(--sig-cyan-deep); }
.sig-prose--dark {
  background: var(--sig-carbon);
  color: var(--sig-body);
  border: 1px solid rgba(159, 183, 176, 0.16);
}
.sig-prose--dark h2, .sig-prose--dark h3 { color: var(--sig-body); }
.sig-prose--dark a { color: var(--sig-cyan); text-decoration-color: var(--sig-cyan-soft); }

.sig-grid {
  display: grid;
  gap: clamp(20px, 2.6vw, 36px);
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
}
.sig-grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(360px, 100%), 1fr)); }

.sig-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
  padding: 0 15px;
  border-radius: var(--sig-radius-pill);
  border: 1px solid rgba(159, 183, 176, 0.32);
  background: transparent;
  color: var(--sig-muted);
  font-family: var(--sig-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: color 0.16s var(--sig-ease), border-color 0.16s var(--sig-ease),
              background 0.16s var(--sig-ease);
}
.sig-chip:hover { color: var(--sig-body); border-color: var(--sig-cyan-soft); }
.sig-chip[aria-pressed="true"] {
  background: var(--sig-cyan);
  border-color: var(--sig-cyan);
  color: #04120F;
  font-weight: 700;
}

.sig-num {
  font-family: var(--sig-mono);
  font-weight: 800;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--sig-cyan);
}
.sig-num--warn { color: var(--sig-orange); }
.sig-num--plain { color: var(--sig-body); }

.sig-field { display: block; }
.sig-field__label {
  display: block;
  font-family: var(--sig-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--sig-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.sig-tick {
  height: 10px;
  border-top: 1px solid rgba(53, 242, 208, 0.28);
  background-image: repeating-linear-gradient(
    90deg,
    rgba(53, 242, 208, 0.5) 0 1px,
    transparent 1px 16px
  );
}
.sig-tick--warm {
  border-top-color: rgba(200, 191, 168, 0.3);
  background-image: repeating-linear-gradient(
    90deg,
    rgba(200, 191, 168, 0.45) 0 1px,
    transparent 1px 16px
  );
}

/* ---------- 图像容器基础规则 ---------- */
.sig-media {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--sig-radius);
  background: linear-gradient(150deg, #0C1A16 0%, #111417 70%);
  border: 1px solid rgba(159, 183, 176, 0.14);
}
.sig-media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.sig-media--16x9 { aspect-ratio: 16 / 9; }
.sig-media--4x3 { aspect-ratio: 4 / 3; }
.sig-media--1x1 { aspect-ratio: 1 / 1; }
.sig-media--tall { aspect-ratio: 3 / 4; }
.sig-media--live {
  background: linear-gradient(135deg, var(--sig-blue) 0%, var(--sig-violet) 100%);
  border-color: rgba(53, 242, 208, 0.3);
}
.sig-media__veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 17, 15, 0) 40%, rgba(7, 17, 15, 0.85) 100%);
  pointer-events: none;
}
.sig-media__cap {
  position: absolute;
  left: 14px;
  bottom: 12px;
  right: 14px;
  font-family: var(--sig-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--sig-body);
}

/* ---------- 显现动效 ---------- */
.is-reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.4s var(--sig-ease), transform 0.4s var(--sig-ease);
}
.is-reveal.is-visible { opacity: 1; transform: none; }

/* ============================================================
   页脚
   ============================================================ */
.sig-footer {
  margin-top: clamp(64px, 10vw, 128px);
  background: linear-gradient(180deg, #0C1714 0%, var(--sig-ink) 100%);
  border-top: 1px solid rgba(53, 242, 208, 0.12);
}

.sig-footer__axis {
  height: 9px;
  border-bottom: 1px solid rgba(53, 242, 208, 0.1);
  background-image: repeating-linear-gradient(
    90deg,
    rgba(53, 242, 208, 0.45) 0 1px,
    transparent 1px 15px
  );
  mask-image: linear-gradient(90deg, transparent 0%, #000 18%, #000 82%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 18%, #000 82%, transparent 100%);
}

.sig-footer__inner {
  padding-top: clamp(40px, 5vw, 64px);
  padding-bottom: clamp(28px, 3vw, 40px);
}

.sig-footer__brand {
  padding-bottom: clamp(26px, 3vw, 40px);
  border-bottom: 1px dashed rgba(159, 183, 176, 0.18);
}

.sig-footer__brandline {
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--sig-body);
  max-width: 30em;
}

.sig-footer__meta {
  margin-top: 10px;
  font-family: var(--sig-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--sig-muted);
}

.sig-footer__grid {
  display: grid;
  gap: clamp(26px, 3.4vw, 48px);
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding: clamp(30px, 4vw, 48px) 0;
}

.sig-footer__coltitle {
  font-family: var(--sig-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--sig-cyan);
  margin-bottom: 16px;
}

.sig-footer__list { display: grid; gap: 10px; }
.sig-footer__list a {
  color: var(--sig-muted);
  font-size: 14.5px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--sig-ease), border-color 0.16s var(--sig-ease);
  padding-bottom: 1px;
}
.sig-footer__list a:hover {
  color: var(--sig-body);
  border-bottom-color: var(--sig-cyan);
}

.sig-footer__facts { display: grid; gap: 12px; }
.sig-footer__fact { display: grid; gap: 2px; }
.sig-footer__fact dt {
  font-family: var(--sig-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(159, 183, 176, 0.75);
}
.sig-footer__fact dd {
  font-size: 14px;
  color: var(--sig-body);
  word-break: break-all;
}

.sig-footer__note {
  margin-top: 16px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--sig-muted);
}

.sig-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 24px;
  padding-top: clamp(20px, 2.4vw, 28px);
  border-top: 1px dashed rgba(159, 183, 176, 0.18);
  font-family: var(--sig-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--sig-muted);
}
.sig-footer__legal-links { display: inline-flex; flex-wrap: wrap; gap: 18px; }
.sig-footer__legal-links a {
  color: var(--sig-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(159, 183, 176, 0.35);
  transition: color 0.16s var(--sig-ease);
}
.sig-footer__legal-links a:hover { color: var(--sig-cyan); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1180px) {
  .sig-header__actions .sig-btn--ghost { display: none; }
  .sig-nav__list { gap: 16px; }
}

@media (max-width: 960px) {
  html { scroll-padding-top: 96px; }

  .sig-nav-toggle { display: inline-flex; }
  .sig-header__actions { display: none; }

  .sig-header__inner { min-height: 66px; }
  .sig-header.is-compact .sig-header__inner { min-height: 58px; }

  .sig-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 10px);
    display: none;
    margin-inline: 0;
    padding: 14px 16px 18px;
    border: 1px solid var(--sig-cyan-dim);
    border-radius: 24px;
    background: rgba(8, 16, 14, 0.98);
    box-shadow: var(--sig-shadow-float);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    max-height: calc(100vh - 150px);
    overflow-y: auto;
  }
  .sig-header[data-open="true"] .sig-nav { display: block; }

  .sig-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .sig-nav__link {
    padding: 14px 12px;
    font-size: 16px;
    border-bottom: 1px dashed rgba(159, 183, 176, 0.16);
    border-radius: 10px;
  }
  .sig-nav__link::after { display: none; }
  .sig-nav__link[aria-current="page"] {
    background: rgba(53, 242, 208, 0.08);
    color: var(--sig-cyan);
  }

  .sig-nav__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
  }
  .sig-nav__actions .sig-btn { flex: 1 1 160px; }

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

@media (max-width: 620px) {
  body { font-size: 16px; }

  .sig-brand__tag { display: none; }
  .sig-brand__mark { width: 32px; height: 32px; border-radius: 10px; font-size: 13px; }
  .sig-brand__name { font-size: 14px; }

  .sig-nav-toggle__label { display: none; }
  .sig-nav-toggle { padding: 0 14px; }

  .sig-progress { left: 16px; right: 16px; }

  .sig-footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .sig-footer__legal { flex-direction: column; align-items: flex-start; gap: 8px; }
  .sig-prose { border-radius: 16px; font-size: 16px; line-height: 1.85; }
}

/* ============================================================
   动效偏好
   ============================================================ */
@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;
  }
  .is-reveal { opacity: 1; transform: none; }
  .sig-progress { transition: none; }
}