/* =========================================================
   /assets/site.css — 新2投注指南 共享外壳
   深空蓝仪表盘 + 霓虹青交互 + 琥珀金序号
   ========================================================= */

/* ---------- 1. 变量 ---------- */
:root {
  --navy-950: #050D1A;
  --navy-900: #0A1B2E;
  --navy-800: #102A44;
  --navy-700: #1B4566;
  --cyan-500: #00E5FF;
  --cyan-300: #79F2FF;
  --amber-500: #FFB020;
  --amber-300: #FFD37A;
  --paper: #F4FAFF;
  --haze: #D7E6F2;
  --steel: #A9C0D4;
  --green: #2EE6A8;

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

  --rail-w: 264px;
  --bar-h: 62px;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --radius: 4px;
  --ease: cubic-bezier(.2, .7, .3, 1);
  --edge: 1px solid var(--navy-700);
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background-color: var(--navy-950);
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--paper);
  background-color: var(--navy-950);
  background-image:
    linear-gradient(rgba(27, 69, 102, .18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 69, 102, .18) 1px, transparent 1px);
  background-size: 64px 64px, 64px 64px;
  -webkit-font-smoothing: antialiased;
  text-wrap: pretty;
}

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

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 .6em;
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.03em;
  color: var(--paper);
  text-wrap: balance;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); }

p { margin: 0 0 1.15em; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--cyan-500);
  text-decoration: none;
  transition: color .18s var(--ease);
}
a:hover { color: var(--cyan-300); }

ul, ol { margin: 0 0 1.15em; padding-left: 1.3em; }
li { margin-bottom: .35em; }

hr {
  border: 0;
  border-top: 1px solid var(--navy-700);
  margin: 2.5rem 0;
}

code, kbd, samp, pre {
  font-family: var(--font-mono);
  font-size: .9em;
}

button { font: inherit; }

:focus-visible {
  outline: 2px solid var(--cyan-300);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection {
  background: var(--amber-500);
  color: var(--navy-950);
}

/* ---------- 3. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  top: -80px;
  left: 12px;
  z-index: 300;
  display: inline-block;
  padding: 10px 18px;
  border-radius: 3px;
  background: var(--amber-500);
  color: var(--navy-950);
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .04em;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; color: var(--navy-950); }

/* ---------- 4. 框架式头部导航轨 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 90;
  width: var(--rail-w);
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 26px 20px 22px;
  overflow-y: auto;
  overscroll-behavior: contain;
  background:
    linear-gradient(180deg, #050D1A 0%, #0A1B2E 58%, #071322 100%);
  border-right: var(--edge);
}
.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan-500) 0%, var(--cyan-500) 42%, var(--amber-500) 100%);
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 18px;
  border-bottom: var(--edge);
  color: var(--paper);
}
.brand:hover { color: var(--paper); }
.brand-mark {
  flex: 0 0 40px;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--cyan-500);
  border-radius: 3px;
  background: rgba(0, 229, 255, .08);
  box-shadow: inset 0 0 14px rgba(0, 229, 255, .22);
  font-family: var(--font-mono);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--cyan-500);
}
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand-name {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--paper);
}
.brand-tag {
  margin-top: 3px;
  font-size: .72rem;
  line-height: 1.45;
  letter-spacing: .02em;
  color: var(--steel);
}

/* 移动端目录按钮（桌面隐藏） */
.nav-toggle { display: none; }
.nav-toggle-box { display: flex; flex-direction: column; gap: 4px; width: 16px; }
.nav-toggle-line {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  transition: transform .22s var(--ease);
}
.nav-toggle-text {
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .1em;
}

/* 目录索引 */
.site-nav {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
}
.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.nav-item { margin: 0; }
.nav-link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid transparent;
  color: var(--steel);
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .01em;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}
.nav-link:hover,
.nav-link:focus-visible {
  color: var(--paper);
  background: rgba(0, 229, 255, .06);
  border-left-color: var(--navy-700);
}
.nav-index {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--cyan-500);
  opacity: .55;
  transition: opacity .18s var(--ease), color .18s var(--ease);
}
.nav-link:hover .nav-index { opacity: 1; }
.nav-label { display: inline; }
.nav-link[aria-current="page"] {
  color: var(--cyan-300);
  border-left-color: var(--amber-500);
  background: linear-gradient(90deg, rgba(0, 229, 255, .16), rgba(0, 229, 255, 0));
}
.nav-link[aria-current="page"] .nav-index {
  color: var(--amber-500);
  opacity: 1;
}

.nav-foot {
  margin-top: auto;
  padding-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: var(--edge);
}
.nav-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .68rem;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--steel);
}

/* ---------- 5. 按钮 ---------- */
.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 16px;
  border: 1px solid transparent;
  border-radius: 3px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .92rem;
  letter-spacing: .01em;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease),
              box-shadow .18s var(--ease), border-color .18s var(--ease);
}
.cta-primary {
  background: var(--amber-500);
  color: var(--navy-900);
  box-shadow: 0 0 0 0 rgba(0, 229, 255, 0);
}
.cta-primary:hover,
.cta-primary:focus-visible {
  background: var(--amber-300);
  color: var(--navy-950);
  box-shadow: 0 0 0 2px rgba(0, 229, 255, .5), 0 0 20px rgba(0, 229, 255, .35);
}
.cta-ghost {
  background: transparent;
  color: var(--cyan-300);
  border-color: var(--navy-700);
}
.cta-ghost:hover,
.cta-ghost:focus-visible {
  color: var(--cyan-300);
  border-color: var(--cyan-500);
  box-shadow: 0 0 18px rgba(0, 229, 255, .3);
}

/* ---------- 6. 页脚 ---------- */
.site-footer {
  position: relative;
  padding: 56px 0 28px;
  background: linear-gradient(180deg, #071322 0%, #050D1A 100%);
  border-top: var(--edge);
  color: var(--steel);
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan-500), rgba(0, 229, 255, 0) 55%, var(--amber-500));
}
.site-footer::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(0, 229, 255, .22) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: .25;
}
.site-footer > .wrap { position: relative; z-index: 1; }

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
  padding-bottom: 42px;
  border-bottom: 1px solid rgba(27, 69, 102, .8);
}

.footer-brand { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.footer-kicker {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan-500);
}
.footer-kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--cyan-500);
}
.footer-name {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1.15;
  color: var(--paper);
}
.footer-summary {
  margin: 0;
  max-width: 34ch;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--steel);
}

.footer-col { min-width: 0; }
.footer-col-title {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--steel);
}
.col-num {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--amber-500);
  letter-spacing: .04em;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links li { margin: 0; }
.footer-links a {
  color: var(--paper);
  font-size: .95rem;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--cyan-300);
  border-bottom-color: var(--cyan-500);
}

.footer-contact-list {
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-contact-list li {
  margin: 0;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 10px;
  align-items: baseline;
}
.contact-key {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--navy-700);
  color: var(--steel);
  opacity: .85;
}
.contact-value {
  font-size: .92rem;
  line-height: 1.7;
  color: var(--paper);
  overflow-wrap: anywhere;
}
.footer-note {
  margin: 0;
  font-size: .76rem;
  line-height: 1.7;
  color: var(--steel);
  opacity: .85;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
  padding-top: 24px;
}
.footer-legal {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}
.footer-legal li { margin: 0; }
.footer-legal a {
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--steel);
}
.footer-legal a:hover,
.footer-legal a:focus-visible { color: var(--cyan-300); }
.footer-icp,
.footer-copy {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .05em;
  color: var(--steel);
  opacity: .9;
}

/* ---------- 7. 布局工具 ---------- */
.wrap {
  width: min(100% - 2.5rem, 1180px);
  margin-inline: auto;
}

#main-content { display: block; }
#main-content:focus { outline: none; }

.prose { max-width: 68ch; }
.prose p { margin-bottom: 1.2em; }
.prose p:last-child { margin-bottom: 0; }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1rem, 2vw, 2rem);
}
.grid-12 > * { grid-column: 1 / -1; }

@media (min-width: 768px) {
  .col-span-4 { grid-column: span 4; }
  .col-span-5 { grid-column: span 5; }
  .col-span-6 { grid-column: span 6; }
  .col-span-7 { grid-column: span 7; }
  .col-span-8 { grid-column: span 8; }
  .col-span-12 { grid-column: 1 / -1; }
}

/* 面包屑 */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--steel);
}
.breadcrumb-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
}
.breadcrumb-list li {
  margin: 0;
  display: inline-flex;
  align-items: center;
}
.breadcrumb-list li:not(:last-child)::after {
  content: "/";
  margin: 0 9px;
  color: var(--navy-700);
}
.breadcrumb a { color: var(--steel); }
.breadcrumb a:hover,
.breadcrumb a:focus-visible { color: var(--cyan-300); }
.breadcrumb [aria-current="page"] { color: var(--cyan-300); }

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid rgba(0, 229, 255, .35);
  border-radius: 2px;
  background: rgba(0, 229, 255, .07);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--cyan-300);
}
.tag--amber {
  border-color: rgba(255, 176, 32, .5);
  background: rgba(255, 176, 32, .1);
  color: var(--amber-300);
}

/* ---------- 8. 图片容器基础规则（页面阶段放占位） ---------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--navy-700);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 28% 18%, rgba(0, 229, 255, .2), transparent 62%),
    linear-gradient(160deg, #0A1B2E 0%, #050D1A 100%);
  box-shadow: 0 0 0 1px rgba(0, 229, 255, .07), 0 22px 44px -30px rgba(0, 229, 255, .55);
}
.media > img,
.media > picture > img,
.media > svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media--wide { aspect-ratio: 21 / 9; }
.media--portrait { aspect-ratio: 3 / 4; }
.media--panel { aspect-ratio: 1 / 1; }
.media-caption {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--steel);
}

/* ---------- 9. 滚动进度 / 返回顶部 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 120;
  pointer-events: none;
  background: rgba(27, 69, 102, .4);
}
.scroll-progress-bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan-500), var(--amber-500));
}

.to-top {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 110;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border: 1px solid var(--navy-700);
  border-radius: 3px;
  background: var(--navy-800);
  color: var(--cyan-300);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .22s var(--ease), transform .22s var(--ease),
              visibility .22s var(--ease), box-shadow .22s var(--ease),
              border-color .22s var(--ease);
}
.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.to-top:hover,
.to-top:focus-visible {
  border-color: var(--cyan-500);
  box-shadow: 0 0 18px rgba(0, 229, 255, .35);
}
.to-top-icon { font-size: .95rem; line-height: 1; }

/* ---------- 10. 显现 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
}
html.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
  transition: opacity .34s var(--ease), transform .34s var(--ease);
}

/* 导航打开时锁滚动 */
.u-nav-lock,
.u-nav-lock body { overflow: hidden; }

/* ---------- 11. 桌面导轨布局 ---------- */
@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }
  .scroll-progress { left: var(--rail-w); }
  .to-top { right: 28px; bottom: 28px; }
}

/* ---------- 12. 移动/平板：顶部条 + 全屏目录 ---------- */
@media (max-width: 1023px) {
  .site-header {
    position: sticky;
    top: 0;
    left: auto;
    bottom: auto;
    width: 100%;
    height: var(--bar-h);
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 0 16px;
    overflow: visible;
    border-right: 0;
    border-bottom: var(--edge);
    background: var(--navy-950);
    z-index: 95;
  }
  .site-header::before { height: 2px; }

  .brand { border-bottom: 0; padding-bottom: 0; gap: 10px; }
  .brand-mark { flex-basis: 34px; width: 34px; height: 34px; font-size: .74rem; }
  .brand-name { font-size: .98rem; }
  .brand-tag { display: none; }

  .nav-toggle {
    position: relative;
    z-index: 110;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border: 1px solid var(--navy-700);
    border-radius: 3px;
    background: var(--navy-800);
    color: var(--cyan-300);
    cursor: pointer;
  }
  .nav-toggle[aria-expanded="true"] {
    border-color: var(--cyan-500);
    box-shadow: 0 0 16px rgba(0, 229, 255, .3);
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle-line:first-child {
    transform: translateY(3px) rotate(45deg);
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle-line:last-child {
    transform: translateY(-3px) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 105;
    padding: calc(var(--bar-h) + 24px) 20px 36px;
    background: linear-gradient(180deg, #071322 0%, #050D1A 100%);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s var(--ease);
  }
  .site-nav::before {
    content: "";
    position: absolute;
    top: var(--bar-h);
    left: 20px;
    right: 20px;
    height: 1px;
    background: var(--navy-700);
  }
  .site-header[data-open="true"] .site-nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-list { gap: 4px; }
  .nav-link { padding: 15px 12px; font-size: 1.05rem; }
  .nav-index { font-size: .8rem; }
  .nav-foot { margin-top: 28px; padding-top: 22px; }
  .nav-note { font-size: .72rem; }
}

/* ---------- 13. 页脚响应式 ---------- */
@media (min-width: 600px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
}
@media (min-width: 1200px) {
  .footer-grid {
    grid-template-columns: 1.55fr .85fr .85fr 1.35fr;
    gap: 32px 40px;
  }
  .footer-brand { grid-column: auto; }
}

/* ---------- 14. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  html.js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}