/* =========================================================
   LUCKY看台 · 共享样式表 /assets/site.css
   1 tokens  2 reset  3 排版  4 通用组件  5 头部  6 页脚
   7 响应式  8 动效降级
   ========================================================= */

/* ---------- 1. Tokens ---------- */
:root {
  --midnight: #0B1B2B;
  --ink: #07131F;
  --paper: #F4FAF6;
  --mint: #DFF5E7;
  --green: #12D18E;
  --green-deep: #0A8F63;
  --cyan: #12C8D8;
  --orange: #FF6A2B;
  --volt: #DFFF4F;
  --steel: #6B8091;
  --hair: #B9CFD6;

  --line: rgba(185, 207, 214, 0.55);
  --line-dark: rgba(185, 207, 214, 0.22);
  --line-soft: rgba(11, 27, 43, 0.12);

  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", "SFMono-Regular", "Cascadia Mono",
    Consolas, "Liberation Mono", monospace;

  --width: 1240px;
  --gutter: clamp(18px, 4vw, 48px);
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 132px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--midnight);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

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

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

h1, h2, h3, h4, p, figure, blockquote, hr { margin: 0; }

table { border-collapse: collapse; width: 100%; }

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

/* ---------- 3. 中文排版与标题 ---------- */
h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: 0.02em;
  text-wrap: balance;
}

h1 { font-size: clamp(34px, 5vw, 64px); }
h2 { font-size: clamp(24px, 3vw, 40px); }
h3 { font-size: clamp(18px, 2vw, 24px); }

p { text-wrap: pretty; }

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

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

/* ---------- 4. 通用组件 ---------- */
.skip-link {
  position: absolute;
  top: -80px;
  left: 12px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--volt);
  color: var(--midnight);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border: 1px solid var(--midnight);
  transition: top 0.18s var(--ease);
}
.skip-link:focus { top: 12px; }

.container {
  width: 100%;
  max-width: var(--width);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.section { padding: clamp(40px, 7vw, 88px) 0; }
.section--tight { padding: clamp(24px, 4vw, 48px) 0; }

.section--dark {
  background: var(--midnight);
  color: var(--paper);
}
.section--dark .rule { border-color: var(--line-dark); }
.section--dark .prose a { color: var(--green); }

.section--mint { background: var(--mint); }
.section--paper { background: var(--paper); }

.eyebrow {
  position: relative;
  display: inline-block;
  padding-left: 36px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--green-deep);
}
.eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 24px;
  height: 1px;
  background: currentColor;
}
.section--dark .eyebrow { color: var(--green); }

.rule {
  border: 0;
  border-top: 1px solid var(--hair);
  margin: 0;
}

/* 按钮 */
.btn {
  --btn-bg: var(--midnight);
  --btn-fg: var(--paper);
  --btn-bd: var(--midnight);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bd);
  border-radius: 0;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  cursor: pointer;
  transition:
    background 0.15s var(--ease),
    color 0.15s var(--ease),
    border-color 0.15s var(--ease),
    transform 0.15s var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--volt {
  --btn-bg: var(--volt);
  --btn-fg: var(--midnight);
  --btn-bd: var(--volt);
}
.btn--volt:hover { --btn-bg: #ebff7d; --btn-bd: #ebff7d; }

.btn--outline {
  --btn-bg: transparent;
  --btn-fg: var(--midnight);
  --btn-bd: var(--midnight);
}
.btn--outline:hover { --btn-bg: var(--midnight); --btn-fg: var(--paper); }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--paper);
  --btn-bd: var(--line);
}
.btn--ghost:hover {
  --btn-bg: rgba(18, 209, 142, 0.16);
  --btn-bd: var(--green);
}

.btn--sm {
  padding: 9px 16px;
  font-size: 12px;
  letter-spacing: 0.12em;
}
.btn--block { display: flex; width: 100%; }

/* 面包屑 */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--steel);
}
.crumbs__link {
  color: var(--steel);
  border-bottom: 1px solid transparent;
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
}
.crumbs__link:hover {
  color: var(--green-deep);
  border-color: currentColor;
}
.crumbs__sep { color: var(--hair); }
.crumbs [aria-current="page"] { color: var(--midnight); }

/* 正文 */
.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.8;
}
.prose > * + * { margin-top: 1.05em; }
.prose h2 { margin-top: 1.9em; }
.prose h3 { margin-top: 1.6em; }
.prose a {
  color: var(--green-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.prose ul,
.prose ol {
  padding-left: 1.35em;
  list-style: square;
}
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 0.4em; }

/* 网格 */
.grid {
  display: grid;
  gap: clamp(18px, 2.4vw, 32px);
}
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--asym {
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: clamp(24px, 4vw, 56px);
}

/* 图片容器（供页面阶段放 <img class="media__img">） */
.media {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  border: 1px solid var(--line-soft);
  isolation: isolate;
}
.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    128deg,
    rgba(11, 27, 43, 0.44),
    rgba(7, 19, 31, 0) 52%,
    rgba(18, 200, 216, 0.16)
  );
  pointer-events: none;
}
.media__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 10px 14px;
  background: linear-gradient(transparent, rgba(7, 19, 31, 0.86));
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}
.media--wide { aspect-ratio: 16 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media--diag {
  clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
}

/* 状态标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--green-deep);
}
.tag--live {
  color: var(--orange);
  border-color: var(--orange);
}
.tag--volt {
  background: var(--volt);
  border-color: var(--volt);
  color: var(--midnight);
}

/* ---------- 5. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--midnight);
  color: var(--paper);
  border-bottom: 1px solid var(--line-dark);
}

/* 数据滚动带 */
.score-ticker {
  display: flex;
  align-items: center;
  height: 32px;
  overflow: hidden;
  background: var(--ink);
  border-bottom: 1px solid var(--line-dark);
  transition: height 0.24s var(--ease), opacity 0.24s var(--ease);
}
.site-header[data-compact="true"] .score-ticker {
  height: 0;
  opacity: 0;
  border-bottom: 0;
}
.score-ticker__track {
  display: flex;
  flex: none;
  gap: 40px;
  width: max-content;
  white-space: nowrap;
  animation: ticker-roll 42s linear infinite;
  will-change: transform;
}
.score-ticker:hover .score-ticker__track { animation-play-state: paused; }

.ticker__item {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(185, 207, 214, 0.82);
}
.ticker__item b {
  color: var(--green);
  font-weight: 700;
}
.ticker__item em {
  font-style: normal;
  color: var(--cyan);
}

@keyframes ticker-roll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* 刊头 */
.header-inner {
  width: 100%;
  max-width: var(--width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.masthead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  padding: 16px 0 12px;
  transition: padding 0.24s var(--ease);
}
.site-header[data-compact="true"] .masthead { padding: 9px 0 7px; }

.brand {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
  text-decoration: none;
}
.brand__word {
  font-family: var(--font-sans);
  font-size: 27px;
  font-weight: 900;
  letter-spacing: 0.16em;
  line-height: 1;
  color: var(--paper);
  transition: font-size 0.24s var(--ease);
}
.brand__cn {
  font-size: 21px;
  font-weight: 800;
  letter-spacing: 0.24em;
  line-height: 1;
  color: var(--green);
}
.brand__tag {
  margin-left: 14px;
  padding-left: 14px;
  border-left: 1px solid var(--line-dark);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(185, 207, 214, 0.78);
}
.site-header[data-compact="true"] .brand__word { font-size: 22px; }

.header-tools {
  display: flex;
  align-items: center;
  gap: 16px;
}
.header-link {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: rgba(185, 207, 214, 0.9);
  padding-bottom: 2px;
  border-bottom: 1px solid var(--line-dark);
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
}
.header-link:hover {
  color: var(--volt);
  border-color: var(--volt);
}

/* 栏目索引行 */
.site-nav {
  counter-reset: nav;
  padding-bottom: 4px;
}
.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
}
.site-nav__item {
  counter-increment: nav;
  display: flex;
}
.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-right: clamp(16px, 2.6vw, 34px);
  padding: 11px 0 13px;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--mint);
  text-decoration: none;
  transition: color 0.15s var(--ease);
}
.site-nav__link::before {
  content: counter(nav, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0;
  color: var(--green);
  opacity: 0.9;
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 6px;
  height: 2px;
  background: var(--green);
  transition: right 0.2s var(--ease);
}
.site-nav__link:hover { color: var(--paper); }
.site-nav__link:hover::after { right: 0; }
.site-nav__link[aria-current="page"] { color: var(--volt); }
.site-nav__link[aria-current="page"]::after {
  right: 0;
  background: var(--volt);
}

/* 移动开关 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 0;
  color: var(--paper);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
}
.nav-toggle:hover {
  color: var(--green);
  border-color: var(--green);
}
.nav-toggle__lines {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 16px;
}
.nav-toggle__lines span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform 0.18s var(--ease), opacity 0.18s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__lines span:first-child {
  transform: translateY(3px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__lines span:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

/* 阅读进度 */
.scroll-meter {
  position: relative;
  height: 2px;
  background: rgba(185, 207, 214, 0.16);
}
.scroll-meter__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--green), var(--cyan) 62%, var(--volt));
}

/* ---------- 6. 页脚 ---------- */
.site-footer {
  background: var(--midnight);
  color: var(--paper);
  margin-top: clamp(48px, 8vw, 96px);
}
.site-footer::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--green) 0%,
    var(--green) 38%,
    var(--cyan) 38%,
    var(--cyan) 66%,
    var(--orange) 66%,
    var(--orange) 76%,
    var(--volt) 76%,
    var(--volt) 100%
  );
}

.footer-inner {
  width: 100%;
  max-width: var(--width);
  margin: 0 auto;
  padding: clamp(40px, 6vw, 72px) var(--gutter) 28px;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(32px, 5vw, 64px);
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line-dark);
}

.footer-brand__word {
  display: block;
  font-size: 30px;
  font-weight: 900;
  letter-spacing: 0.18em;
  line-height: 1;
  color: var(--paper);
}
.footer-brand__cn {
  display: block;
  margin-top: 8px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.5em;
  color: var(--green);
}
.footer-brand__line {
  margin-top: 18px;
  max-width: 30ch;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(185, 207, 214, 0.82);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
}
.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--cyan);
}
.footer-col__list { display: grid; gap: 9px; }
.footer-col__link {
  display: inline-block;
  font-size: 14px;
  color: var(--mint);
  border-bottom: 1px solid transparent;
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
}
.footer-col__link:hover {
  color: var(--volt);
  border-color: var(--volt);
}
.footer-col__link[aria-current="page"] { color: var(--volt); }

.footer-contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 18px 32px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line-dark);
}
.footer-contact__item { display: grid; gap: 5px; }
.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--steel);
}
.footer-contact__value {
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 28px;
  padding-top: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: rgba(185, 207, 214, 0.78);
}
.footer-base__addr { max-width: 46ch; }

/* 返回顶部（由 JS 创建） */
.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 70;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  background: var(--midnight);
  color: var(--volt);
  border: 1px solid var(--green);
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition:
    opacity 0.18s var(--ease),
    transform 0.18s var(--ease),
    visibility 0.18s var(--ease),
    background 0.15s var(--ease),
    color 0.15s var(--ease);
}
.to-top.is-on {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.to-top:hover {
  background: var(--green);
  color: var(--midnight);
}

/* 进入视口显现 */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 7. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 920px) {
  html { scroll-padding-top: 96px; }

  .brand__tag { display: none; }

  .nav-toggle { display: inline-flex; }

  .site-nav {
    display: none;
    padding-bottom: 14px;
    border-top: 1px solid var(--line-dark);
    margin-top: 4px;
  }
  .site-nav[data-open="true"] { display: block; }
  .site-nav__list { flex-direction: column; }
  .site-nav__item { width: 100%; }
  .site-nav__link {
    width: 100%;
    margin-right: 0;
    padding: 13px 0;
    font-size: 15px;
    border-bottom: 1px solid var(--line-dark);
  }
  .site-nav__link::after { display: none; }

  .grid--3,
  .grid--asym { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 640px) {
  body { font-size: 16px; }

  .score-ticker { height: 28px; }

  .masthead { gap: 12px; }
  .brand__word { font-size: 22px; letter-spacing: 0.12em; }
  .brand__cn { font-size: 17px; letter-spacing: 0.18em; }
  .header-link { display: none; }

  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-base { flex-direction: column; align-items: flex-start; }

  .grid--2 { grid-template-columns: minmax(0, 1fr); }
  .media--diag { clip-path: none; }
}

@media (min-width: 921px) {
  .site-nav[data-open] { display: block; }
}

/* ---------- 8. 动效降级 ---------- */
@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;
  }

  .score-ticker__track { animation: none; transform: none; }

  .js [data-reveal],
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

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