/* ===== 乐游手机端 全站共享样式 /assets/site.css ===== */

/* ---------- 变量 ---------- */
:root {
  --color-primary: #0A1F44;
  --color-primary-deep: #06132B;
  --color-primary-light: #1F3A6E;
  --color-accent: #FFD700;
  --color-accent-soft: #F5C518;
  --color-bg: #F7F8FA;
  --color-text: #1A2130;
  --color-white: #FFFFFF;
  --color-danger: #E63946;
  --color-success: #2ECC71;
  --color-line: rgba(10, 31, 68, 0.14);
  --color-line-light: rgba(255, 255, 255, 0.18);

  --font-head: "Arial Black", Impact, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-data: ui-monospace, "Roboto Mono", SFMono-Regular, Menlo, Consolas, monospace;

  --container: 1200px;
  --gutter: 24px;
  --header-h: 64px;
  --topline-h: 30px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }
body, h1, h2, h3, h4, h5, h6, figure, p, blockquote, dl, dd, pre, ul, ol { margin: 0; }
ul, ol { padding: 0; }
img, svg, video { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; color: inherit; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}
main { display: block; }

/* ---------- 排版 ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.2;
  color: var(--color-primary);
}
h1 { font-size: 40px; }
h2 { font-size: 32px; }
h3 { font-size: 24px; }
p { line-height: 1.7; }
a { color: var(--color-primary-light); text-underline-offset: 3px; }
a:hover { color: var(--color-primary); }

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

/* ---------- 布局容器 ---------- */
.container {
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.container--wide { max-width: 1440px; }

/* ---------- 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 1000;
  background: var(--color-accent);
  color: var(--color-primary);
  font-weight: 700;
  padding: 10px 18px;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform 0.25s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--color-primary);
  box-shadow: 0 2px 12px rgba(6, 19, 43, 0.3);
}

.header-topline {
  background: var(--color-accent);
  color: var(--color-primary);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 1px;
  height: var(--topline-h);
}
.header-topline__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 100%;
}
.header-topline__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.header-topline__item--domain { color: rgba(10, 31, 68, 0.72); }
.header-topline__item--domain::before { content: "//"; margin-right: 4px; opacity: 0.5; }

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex: none;
}
.status-dot--online {
  background: var(--color-success);
  box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.25);
}

.header-main { min-height: var(--header-h); }
.header-main__inner {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex: none;
}
.brand__mark {
  width: 38px;
  height: 38px;
  background: var(--color-accent);
  color: var(--color-primary);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 16px;
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.brand__text {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: 2px;
  color: var(--color-white);
}
.brand:hover .brand__mark { background: var(--color-white); }
.brand:hover .brand__text { color: var(--color-accent); }

.site-nav { margin-left: auto; }
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}
.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 12px;
  color: rgba(255, 255, 255, 0.72);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 1px;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.site-nav__link::before {
  content: attr(data-index);
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--color-accent);
  opacity: 0.6;
  letter-spacing: 0;
}
.site-nav__link:hover {
  color: var(--color-white);
  border-bottom-color: var(--color-accent);
  background: rgba(255, 255, 255, 0.04);
}
.site-nav__link[aria-current="page"] {
  color: var(--color-white);
  border-bottom-color: var(--color-accent);
  background: rgba(255, 215, 0, 0.1);
}
.site-nav__link[aria-current="page"]::before { opacity: 1; }

.header-action {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-accent);
  color: var(--color-primary);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 1px;
  padding: 12px 18px;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s, transform 0.2s;
}
.header-action::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--color-primary);
  transform: rotate(45deg);
  flex: none;
}
.header-action:hover {
  background: var(--color-white);
  color: var(--color-primary);
  transform: translateY(1px);
}

.nav-toggle { display: none; }

.header-progress {
  position: absolute;
  left: 0;
  bottom: -2px;
  height: 3px;
  width: 0;
  background: var(--color-accent);
  z-index: 1;
}
.header-progress::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  transform: translateY(-50%) rotate(45deg);
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.72);
  margin-top: 80px;
}
.footer-topline {
  border-top: 4px solid var(--color-accent);
  border-bottom: 1px solid var(--color-line-light);
  padding: 8px 0;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}
.footer-topline span { display: inline-block; padding: 0 var(--gutter); }
.footer-topline span + span { border-left: 1px solid var(--color-line-light); }

.footer-main { padding: 56px 0 40px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.4fr;
  gap: 48px;
}
.footer-brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: var(--color-accent);
  color: var(--color-primary);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 18px;
}
.footer-brand__name {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 24px;
  letter-spacing: 2px;
  color: var(--color-white);
  margin-left: 12px;
}
.footer-brand__note {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
}
.footer-col__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-white);
  margin-bottom: 16px;
  text-transform: uppercase;
}
.footer-col__title::before {
  content: "";
  width: 14px;
  height: 2px;
  background: var(--color-accent);
  flex: none;
}
.footer-col__list { list-style: none; font-size: 14px; line-height: 2; }
.footer-col__list a { color: rgba(255, 255, 255, 0.65); text-decoration: none; }
.footer-col__list a:hover { color: var(--color-accent); }

.footer-legal {
  border-top: 1px solid var(--color-line-light);
  background: rgba(6, 19, 43, 0.6);
  padding: 28px 0;
}
.footer-legal__inner { display: grid; gap: 14px; }
.footer-trust {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
  max-width: 980px;
}
.footer-legal__links { display: flex; flex-wrap: wrap; gap: 6px 22px; }
.footer-legal__links a {
  color: var(--color-accent);
  font-size: 14px;
  text-underline-offset: 3px;
}
.footer-legal__links a:hover { color: var(--color-white); }
.footer-legal__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  align-items: center;
}
.footer-copy,
.footer-icp {
  font-family: var(--font-data);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* ---------- 通用组件 ---------- */
.section { padding: 72px 0; }
.section--tight { padding: 48px 0; }
.section--dark {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.75);
}
.section--dark h1,
.section--dark h2,
.section--dark h3 { color: var(--color-white); }
.section--rule { border-top: 2px solid var(--color-primary); }

.section-head { margin-bottom: 32px; max-width: 720px; }
.section-head__kicker {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--color-primary);
  text-transform: uppercase;
  display: block;
  margin-bottom: 10px;
}
.section-head__kicker::before { content: "// "; color: var(--color-accent); }
.section--dark .section-head__kicker { color: var(--color-accent); }

.breadcrumb {
  font-family: var(--font-data);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.65);
  padding: 12px 0;
}
.breadcrumb a { color: rgba(255, 255, 255, 0.65); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-white); }
.breadcrumb__sep { margin: 0 8px; color: var(--color-accent); }
.breadcrumb__current { color: var(--color-accent); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  font-size: 15px;
  padding: 10px 20px;
  border: 2px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.2s;
}
.btn--primary {
  background: var(--color-accent);
  color: var(--color-primary);
  border-color: var(--color-accent);
}
.btn--primary:hover {
  background: var(--color-accent-soft);
  border-color: var(--color-accent-soft);
  color: var(--color-primary);
  transform: translateY(-2px);
}
.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary-light);
}
.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(10, 31, 68, 0.04);
  transform: translateY(-2px);
}
.btn--light {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.6);
}
.btn--light:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}
.btn--small { padding: 6px 12px; font-size: 13px; }

.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  padding: 24px;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(10, 31, 68, 0.08);
  border-color: var(--color-primary-light);
}
.card--dark {
  background: var(--color-primary-light);
  border-color: transparent;
  color: rgba(255, 255, 255, 0.8);
}
.card--dark h3 { color: var(--color-white); }
.card__title {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 900;
  margin-bottom: 12px;
}
.card__meta {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 1px;
  color: rgba(10, 31, 68, 0.55);
  display: block;
  margin-bottom: 8px;
}
.card--dark .card__meta { color: rgba(255, 255, 255, 0.5); }
.card__text { font-size: 14px; line-height: 1.7; }
.card__link {
  margin-top: 16px;
  display: inline-block;
  font-weight: 700;
  text-underline-offset: 3px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  font-size: 14px;
}
.data-table th,
.data-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--color-line);
}
.data-table th {
  background: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 1px;
}
.data-table tr:hover td { background: rgba(255, 215, 0, 0.06); }
.data-table .num { font-family: var(--font-data); font-weight: 700; }

.display-num {
  font-family: var(--font-data);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-primary);
}
.display-num--accent { color: var(--color-accent); }
.data-label {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 1px;
  color: rgba(10, 31, 68, 0.55);
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}
.section--dark .data-label { color: rgba(255, 255, 255, 0.55); }

.tag {
  display: inline-block;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  border: 1px solid var(--color-line);
  color: var(--color-primary-light);
  background: transparent;
}
.tag--accent {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-primary);
}
.tag--dark {
  border-color: rgba(255, 255, 255, 0.3);
  color: rgba(255, 255, 255, 0.8);
}

.hero-frame {
  position: relative;
  border: 1px solid var(--color-line);
  background: var(--color-white);
  padding: 40px;
}
.hero-frame::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--color-accent);
}

.media-frame {
  position: relative;
  overflow: hidden;
  background: var(--color-primary-light);
  border: 1px solid var(--color-line);
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}
.media-frame::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 10px;
  width: 18px;
  height: 18px;
  border-top: 2px solid var(--color-accent);
  border-left: 2px solid var(--color-accent);
  z-index: 1;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.2);
  pointer-events: none;
}
.media-frame--hero { aspect-ratio: 16 / 7; }
.media-frame--card { aspect-ratio: 4 / 3; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
[data-reveal].is-revealed { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .site-nav__link { padding: 10px 8px; font-size: 14px; }
  .header-main__inner { gap: 12px; }
}

@media (max-width: 980px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.35);
    padding: 8px 12px;
    color: var(--color-white);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    line-height: 1;
  }
  .nav-toggle:hover { border-color: var(--color-accent); }
  .nav-toggle__label { letter-spacing: 1px; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-primary);
    border-top: 2px solid var(--color-accent);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s var(--ease);
    box-shadow: 0 16px 24px rgba(6, 19, 43, 0.5);
  }
  .site-nav[data-open] { max-height: 520px; }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    padding: 8px var(--gutter) 20px;
    gap: 0;
  }
  .site-nav__link {
    display: flex;
    align-items: center;
    padding: 14px 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  .site-nav__link:hover,
  .site-nav__link[aria-current="page"] { background: rgba(255, 215, 0, 0.06); border-bottom-color: rgba(255, 255, 255, 0.1); }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --gutter: 18px; }
  h1 { font-size: 32px; }
  h2 { font-size: 26px; }
  .section { padding: 48px 0; }
  .media-frame--hero { aspect-ratio: 4 / 3; }
  .data-table { display: block; overflow-x: auto; white-space: nowrap; }
}

@media (max-width: 640px) {
  .header-topline__item--status { display: none; }
  .header-topline__inner { justify-content: center; }
  .brand__text { font-size: 17px; letter-spacing: 1px; }
  .header-action { font-size: 12px; padding: 10px 12px; gap: 6px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-brand__name { display: block; margin-left: 0; margin-top: 10px; }
  .footer-legal__bottom { flex-direction: column; align-items: flex-start; }
  .footer-topline span { padding: 0 12px; }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
  .header-progress { display: none; }
  [data-reveal] { opacity: 1; transform: none; }
  .btn:hover,
  .btn--primary:hover,
  .btn--ghost:hover,
  .btn--light:hover,
  .card:hover { transform: none; }
}