/* ============================================================
   万博CN · 共享样式 /assets/site.css
   夜间数字娱乐控制台 × 杂志报头
   ============================================================ */

/* ---------- 1. 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(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

::selection { background: var(--gold); color: var(--ink); }

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #0B0D12;
  --panel: #171B24;
  --panel-soft: #1E2430;
  --paper: #F4EFE6;
  --paper-deep: #E7DFD0;
  --gold: #FF9F1C;
  --gold-soft: #FFC46B;
  --cyan: #34C6D3;
  --slate: #7A8291;
  --green: #3DDC97;
  --amber: #FFB020;
  --text: #121212;

  --line: rgba(244, 239, 230, 0.12);
  --line-strong: rgba(244, 239, 230, 0.24);

  --r-lg: 22px;
  --r-md: 14px;
  --r-sm: 9px;
  --wrap: 1240px;

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

/* ---------- 3. 通用容器与排版 ---------- */
.wrap {
  width: min(var(--wrap), 100% - 40px);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -72px;
  z-index: 140;
  padding: 10px 18px;
  background: var(--gold);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  border-radius: var(--r-sm);
  transition: top 0.2s ease;
}
.skip-link:focus { top: 14px; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--slate);
}

.lede {
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.85;
  color: rgba(244, 239, 230, 0.84);
}

.muted { color: var(--slate); }

.rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: var(--line);
}

.section { padding: clamp(56px, 8vw, 112px) 0; }

.section__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--gold);
}

.section__title {
  margin-top: 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 6vw, 84px);
  line-height: 1.02;
  letter-spacing: 0.01em;
}

.section__lede {
  margin-top: 18px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(244, 239, 230, 0.78);
}

.prose {
  max-width: 74ch;
  font-size: 16.5px;
  line-height: 1.9;
  color: rgba(244, 239, 230, 0.84);
}
.prose p + p { margin-top: 1.1em; }
.prose h2,
.prose h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  margin-top: 1.6em;
  margin-bottom: 0.5em;
}
.prose h2 { font-size: clamp(24px, 3vw, 34px); }
.prose h3 { font-size: clamp(19px, 2vw, 24px); }
.prose ul { margin: 1em 0; display: grid; gap: 0.55em; }
.prose ul li { position: relative; padding-left: 22px; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 9px;
  height: 2px;
  background: var(--gold);
}
.prose a { color: var(--cyan); border-bottom: 1px solid rgba(52, 198, 211, 0.42); }
.prose a:hover { border-bottom-color: var(--gold); color: var(--gold-soft); }
.panel--paper .prose,
.panel--paper .lede { color: rgba(18, 18, 18, 0.86); }

/* ---------- 4. 画板与卡片 ---------- */
.panel {
  position: relative;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(22px, 3vw, 40px);
}
.panel--paper {
  background: var(--paper);
  color: var(--text);
  border-color: transparent;
}
.panel--gold {
  background: var(--gold);
  color: var(--ink);
  border-color: transparent;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(20px, 2.4vw, 30px);
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.card:hover {
  border-color: rgba(255, 159, 28, 0.42);
  transform: translateY(-3px);
}
.card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.2vw, 27px);
  line-height: 1.24;
}

.grid { display: grid; gap: 24px; }
.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)); }

/* ---------- 5. 按钮 / 标签 / 面包屑 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14.5px;
  letter-spacing: 0.08em;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.btn--primary { background: var(--gold); color: var(--ink); font-weight: 700; }
.btn--primary:hover { background: var(--gold-soft); transform: translateY(-2px); }
.btn--ghost { border-color: var(--line-strong); color: var(--paper); }
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn--quiet { background: rgba(52, 198, 211, 0.12); color: var(--cyan); }
.btn--quiet:hover { background: rgba(52, 198, 211, 0.2); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}
.chip--gold { color: var(--gold); border-color: rgba(255, 159, 28, 0.42); }

.breadcrumb { padding-top: 22px; }
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}
.breadcrumb__list li { display: inline-flex; align-items: center; gap: 10px; }
.breadcrumb__list li + li::before { content: "/"; color: var(--slate); }
.breadcrumb__list a:hover { color: var(--cyan); }
.breadcrumb__list [aria-current="page"] { color: var(--paper); }

/* ---------- 6. 数字锚点与索引 ---------- */
.anchor-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(56px, 10vw, 140px);
  line-height: 0.88;
  letter-spacing: -0.02em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}
.anchor-label {
  display: block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--slate);
}

/* ---------- 7. 图片容器基础（页面阶段放图用） ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--r-md);
  background: var(--panel-soft);
  border: 1px solid var(--line);
}
.media img { width: 100%; height: 100%; object-fit: cover; }
.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media__index {
  position: absolute;
  left: 14px;
  top: 14px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(11, 13, 18, 0.72);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--paper);
}
.media__fallback {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 12% 12%, rgba(255, 159, 28, 0.28), transparent 58%),
    radial-gradient(100% 80% at 92% 88%, rgba(52, 198, 211, 0.22), transparent 62%),
    linear-gradient(160deg, #1E2430, #0B0D12);
}
.media__fallback::after {
  content: "";
  position: absolute;
  right: -30px;
  bottom: -46px;
  width: 150px;
  height: 150px;
  border-radius: 46% 54% 60% 40% / 50% 42% 58% 50%;
  background: rgba(255, 159, 28, 0.18);
}

/* ---------- 8. 状态灯 ---------- */
.lamp {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--green);
}
.lamp::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 3px rgba(61, 220, 151, 0.15);
  animation: lampPulse 2.8s ease-in-out infinite;
}
.lamp--amber { color: var(--amber); }
.lamp--amber::before { box-shadow: 0 0 0 3px rgba(255, 176, 32, 0.15); }
.lamp--cyan { color: var(--cyan); }
.lamp--cyan::before { box-shadow: 0 0 0 3px rgba(52, 198, 211, 0.15); }

@keyframes lampPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.42; transform: scale(0.8); }
}

/* ---------- 9. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(11, 13, 18, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.progress-track {
  height: 3px;
  background: rgba(244, 239, 230, 0.07);
  overflow: hidden;
}
.progress-bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--gold-soft) 58%, var(--cyan));
  transition: width 0.12s linear;
}

.masthead { border-bottom: 1px solid var(--line); }

.masthead__inner {
  width: min(var(--wrap), 100% - 40px);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 18px;
  padding: 16px 0 14px;
}

.masthead__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slate);
}
.masthead__meta--right { justify-content: flex-end; }
.masthead__fact { white-space: nowrap; }

.brand {
  display: grid;
  justify-items: center;
  gap: 4px;
  text-align: center;
}
.brand__mark {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 2.5vw, 32px);
  line-height: 1;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--paper);
}
.brand__mark em { font-style: normal; color: var(--gold); transition: color 0.2s ease; }
.brand:hover .brand__mark em { color: var(--gold-soft); }
.brand__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--slate);
}

.masthead__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 17px;
  border: 1px solid rgba(255, 159, 28, 0.45);
  border-radius: 999px;
  color: var(--gold);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.masthead__cta:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.nav-toggle:hover { border-color: var(--gold); color: var(--gold-soft); }
.nav-toggle__bars { display: grid; gap: 4px; width: 16px; }
.nav-toggle__bars span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--gold);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.nav-rail { display: block; }

.nav-rail__list {
  counter-reset: navidx;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px;
}

.nav-rail__list a {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 13px 18px 15px;
  color: rgba(244, 239, 230, 0.68);
  font-size: 15px;
  letter-spacing: 0.1em;
  transition: color 0.2s ease, background 0.2s ease;
}
.nav-rail__list a::before {
  counter-increment: navidx;
  content: counter(navidx, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--slate);
  transition: color 0.2s ease;
}
.nav-rail__list a::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 8px;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.22s ease;
}
.nav-rail__list a:hover { color: var(--paper); }
.nav-rail__list a:hover::before { color: var(--gold-soft); }
.nav-rail__list a[aria-current="page"] { color: var(--paper); }
.nav-rail__list a[aria-current="page"]::before { color: var(--gold); }
.nav-rail__list a[aria-current="page"]::after { transform: scaleX(1); }

/* ---------- 10. 页脚 ---------- */
.site-footer {
  position: relative;
  background: var(--ink);
  border-top: 1px solid var(--line);
  padding: 64px 0 36px;
}

.footer-deck {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--line);
}

.footer-brand__title {
  margin-top: 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(42px, 7vw, 88px);
  line-height: 0.92;
  letter-spacing: 0.02em;
}
.footer-brand__title em { font-style: normal; color: var(--gold); }

.footer-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin-top: 24px;
}
.footer-facts li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14.5px;
  color: rgba(244, 239, 230, 0.76);
}
.footer-facts li::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--gold);
  border-radius: 1px;
  transform: rotate(45deg);
}

.footer-contact {
  position: relative;
  overflow: hidden;
  background: var(--paper);
  color: var(--text);
  border-radius: var(--r-lg);
  padding: 30px clamp(22px, 3vw, 34px);
}
.footer-contact::after {
  content: "";
  position: absolute;
  right: -50px;
  bottom: -70px;
  width: 190px;
  height: 190px;
  border-radius: 46% 54% 60% 40% / 50% 42% 58% 50%;
  background: rgba(255, 159, 28, 0.16);
}
.footer-contact .eyebrow { color: #6B6255; }

.contact-list {
  position: relative;
  margin-top: 18px;
  display: grid;
  gap: 14px;
}
.contact-list li {
  display: grid;
  grid-template-columns: 66px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding-bottom: 13px;
  border-bottom: 1px dashed rgba(18, 18, 18, 0.16);
}
.contact-list li:last-child { padding-bottom: 0; border-bottom: 0; }
.contact-list__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #6B6255;
}
.contact-list__value {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  word-break: break-word;
}
.contact-list__value--strong {
  font-family: var(--font-mono);
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}
.footer-nav__heading {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
}
.footer-nav__list { display: grid; gap: 2px; }
.footer-nav__list a {
  display: block;
  padding: 8px 0;
  font-size: 15px;
  color: rgba(244, 239, 230, 0.74);
  transition: color 0.2s ease, transform 0.2s ease;
}
.footer-nav__list a:hover { color: var(--gold-soft); transform: translateX(4px); }

.footer-note {
  max-width: 74ch;
  margin-top: 26px;
  font-size: 12.5px;
  line-height: 1.95;
  color: var(--slate);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 26px;
  margin-top: 26px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.footer-base__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--slate);
}
.footer-base__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 13.5px;
}
.footer-base__legal a { color: var(--cyan); transition: color 0.2s ease; }
.footer-base__legal a:hover { color: var(--gold-soft); }

.totop {
  position: fixed;
  right: 20px;
  bottom: 22px;
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 17px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(23, 27, 36, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--paper);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s, border-color 0.2s ease;
}
.totop[data-visible] { opacity: 1; visibility: visible; transform: none; }
.totop:hover { border-color: var(--gold); color: var(--gold-soft); }

/* ---------- 11. 滚动显现与章节高亮 ---------- */
html.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.22s ease, transform 0.22s ease;
}
html.has-js [data-reveal].is-visible { opacity: 1; transform: none; }

[data-spy-link] { transition: color 0.2s ease; }
[data-spy-link].is-current { color: var(--gold); }

/* ---------- 12. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-deck { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 920px) {
  html { scroll-padding-top: 106px; }

  .masthead__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    padding: 12px 0;
  }
  .masthead__meta--left { display: none; }
  .brand { justify-items: start; text-align: left; }
  .nav-toggle { display: inline-flex; }

  .nav-rail { display: none; border-top: 1px solid var(--line); }
  .nav-rail[data-open] { display: block; }
  .nav-rail__list {
    flex-direction: column;
    gap: 0;
    padding: 8px 0 16px;
  }
  .nav-rail__list a {
    justify-content: flex-start;
    padding: 15px 4px;
    border-bottom: 1px dashed var(--line);
  }
  .nav-rail__list li:last-child a { border-bottom: 0; }
  .nav-rail__list a::after {
    left: 0;
    right: auto;
    bottom: 9px;
    width: 28px;
  }
}

@media (max-width: 820px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: minmax(0, 1fr); }
  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
  .footer-base { justify-content: flex-start; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap,
  .masthead__inner { width: min(var(--wrap), 100% - 28px); }
  .brand__mark { font-size: 20px; letter-spacing: 0.06em; }
  .brand__sub { font-size: 9px; letter-spacing: 0.22em; }
  .masthead__cta { display: none; }
  .site-footer { padding: 48px 0 28px; }
  .footer-nav { grid-template-columns: minmax(0, 1fr); }
  .footer-facts { gap: 10px 18px; }
  .contact-list li { grid-template-columns: 58px minmax(0, 1fr); gap: 10px; }
  .footer-brand__title { font-size: clamp(38px, 14vw, 56px); }
  .media { aspect-ratio: 4 / 3; }
  .media--wide { aspect-ratio: 16 / 10; }
  .totop { right: 14px; bottom: 16px; padding: 9px 14px; }
}

/* ---------- 13. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.has-js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .lamp::before { animation: none; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}