/* ==========================================================================
   米乐赛场 — /assets/site.css
   共享层：变量 / 重置 / 中文排版 / 报头 / 页脚 / 基础组件
   ========================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root {
  --c-field: #06231C;
  --c-stand: #0B3A2E;
  --c-moss: #12513F;
  --c-neon: #00E5C0;
  --c-neon-soft: #7CF3DA;
  --c-ember: #FF7A30;
  --c-bone: #F4EFE3;
  --c-mist: #C9D6CF;
  --c-deep: #041410;
  --c-glass: rgba(244, 239, 227, 0.07);
  --c-glass-hi: rgba(244, 239, 227, 0.13);
  --hair-line: rgba(18, 81, 63, 0.85);

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

  --shell: min(1240px, calc(100% - 2.5rem));
  --slant: clamp(26px, 4.5vw, 64px);
  --r-xs: 3px;
  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 20px;
  --ease: cubic-bezier(0.22, 0.68, 0.28, 1);
  --t-fast: 140ms;
  --t-base: 200ms;
  --shadow-lift: 0 18px 40px -24px rgba(4, 20, 16, 0.9);
}

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

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

body {
  margin: 0;
  background-color: var(--c-field);
  color: var(--c-bone);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

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

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.6em;
  line-height: 1.2;
  font-weight: 600;
  text-wrap: balance;
}

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

a { color: var(--c-neon); }

hr {
  border: 0;
  border-top: 1px solid var(--hair-line);
  margin: 2rem 0;
}

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

::selection {
  background: var(--c-neon);
  color: var(--c-deep);
}

/* ---------- 3. 中文排版与工具类 ---------- */
@media (min-width: 900px) {
  body { font-size: 17px; }
}

.num,
.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.stack > * + * { margin-top: clamp(1rem, 2.4vw, 1.75rem); }

.eyebrow {
  margin: 0 0 0.9rem;
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--c-mist);
  text-transform: uppercase;
}

.section-title {
  margin: 0 0 0.5em;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 200;
  letter-spacing: 0.01em;
}

.section-title strong,
.section-title b {
  font-weight: 800;
  color: var(--c-neon);
}

.lede {
  font-size: clamp(1.02rem, 1.6vw, 1.2rem);
  line-height: 1.7;
  color: var(--c-bone);
  max-width: 62ch;
}

.note {
  font-size: 0.78rem;
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}

.divider {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--c-moss), rgba(18, 81, 63, 0));
  margin: clamp(1.5rem, 4vw, 3rem) 0;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.22em 0.7em;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--c-neon-soft);
  border: 1px solid var(--hair-line);
  border-radius: 999px;
  background: var(--c-glass);
}

.rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.9em;
  padding: 0.1em 0.4em;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--c-deep);
  background: var(--c-ember);
  border-radius: var(--r-xs);
}

/* ---------- 4. 网格 ---------- */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1rem, 2.4vw, 2rem);
}

@media (max-width: 960px) {
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

@media (max-width: 560px) {
  .grid-12 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 5. 斜切分区 ---------- */
.slant-top {
  clip-path: polygon(0 var(--slant), 100% 0, 100% 100%, 0 100%);
}

.slant-bottom {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--slant)), 0 100%);
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.78em 1.5em;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background-color var(--t-base) var(--ease),
              color var(--t-base) var(--ease),
              border-color var(--t-base) var(--ease),
              transform var(--t-fast) var(--ease);
}

.btn--primary {
  background: var(--c-neon);
  color: var(--c-deep);
}

.btn--primary:hover { background: var(--c-neon-soft); }

.btn--ghost {
  background: transparent;
  color: var(--c-bone);
  border-color: var(--c-moss);
}

.btn--ghost:hover {
  color: var(--c-neon);
  border-color: var(--c-neon);
}

.btn--ember {
  background: transparent;
  color: var(--c-ember);
  border-color: rgba(255, 122, 48, 0.55);
}

.btn--ember:hover {
  background: var(--c-ember);
  color: var(--c-deep);
}

.btn:active { transform: translateY(1px); }

/* ---------- 7. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 clamp(1.25rem, 3vw, 2rem);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--c-mist);
}

.breadcrumb a {
  color: var(--c-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-base) var(--ease), border-color var(--t-base) var(--ease);
}

.breadcrumb a:hover {
  color: var(--c-neon);
  border-bottom-color: var(--c-neon);
}

.breadcrumb__sep { color: var(--c-moss); }

/* ---------- 8. 内容卡片 / 数据件 ---------- */
.section {
  padding-block: clamp(2.75rem, 7vw, 6rem);
  position: relative;
}

.glass-card {
  position: relative;
  padding: clamp(1.25rem, 2.6vw, 2rem);
  background: var(--c-glass);
  border: 1px solid var(--hair-line);
  border-radius: var(--r-md);
  backdrop-filter: blur(10px);
  transition: border-color var(--t-base) var(--ease),
              transform var(--t-base) var(--ease),
              background-color var(--t-base) var(--ease);
}

.glass-card:hover {
  border-color: var(--c-neon);
  transform: translateY(-2px);
  background: var(--c-glass-hi);
}

.panel {
  padding: clamp(1.25rem, 2.6vw, 2rem);
  background: var(--c-stand);
  border: 1px solid var(--hair-line);
  border-radius: var(--r-md);
}

.stat { display: flex; flex-direction: column; gap: 0.2em; }

.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.9rem, 3.6vw, 2.9rem);
  line-height: 1;
  font-weight: 700;
  color: var(--c-neon);
  letter-spacing: -0.02em;
}

.stat__value--ember { color: var(--c-ember); }
.stat__value--soft { color: var(--c-neon-soft); }

.stat__label {
  font-size: 0.76rem;
  letter-spacing: 0.13em;
  color: var(--c-mist);
}

.data-bar { display: block; }

.data-bar__track {
  position: relative;
  display: block;
  height: 8px;
  border-radius: 999px;
  background: rgba(18, 81, 63, 0.55);
  overflow: hidden;
}

.data-bar__fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--c-moss), var(--c-neon));
}

.data-bar__fill--ember { background: linear-gradient(90deg, var(--c-moss), var(--c-ember)); }

/* ---------- 9. 图片容器（页面阶段放占位图） ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border-radius: var(--r-md);
  border: 1px solid var(--hair-line);
  background: linear-gradient(140deg, var(--c-stand), var(--c-deep) 70%);
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--hero { aspect-ratio: 4 / 3; }

@media (min-width: 900px) {
  .media-frame--hero { aspect-ratio: 16 / 11; }
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.06);
  transition: transform 400ms var(--ease);
}

.media-frame:hover img { transform: scale(1.02); }

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(102deg, rgba(0, 229, 192, 0.10) 0%, rgba(0, 229, 192, 0) 44%),
    repeating-linear-gradient(100deg, rgba(4, 20, 16, 0.16) 0 2px, rgba(4, 20, 16, 0) 2px 5px);
  mix-blend-mode: screen;
  opacity: 0.7;
}

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 1.6rem 1rem 0.7rem;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--c-bone);
  background: linear-gradient(to top, rgba(4, 20, 16, 0.92), rgba(4, 20, 16, 0));
}

/* ---------- 10. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 400;
  padding: 0.7rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--c-deep);
  background: var(--c-neon);
  border-radius: var(--r-sm);
  text-decoration: none;
  transition: top var(--t-base) var(--ease);
}

.skip-link:focus { top: 1rem; }

/* ---------- 11. 报头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(180deg, rgba(4, 20, 16, 0.97), rgba(6, 35, 28, 0.92));
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--hair-line);
}

.masthead {
  position: relative;
  width: var(--shell);
  margin-inline: auto;
  padding: 1.3rem 0 1rem;
  text-align: center;
}

.masthead__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.7rem;
  padding: 0.3rem 0.75rem;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--c-mist);
  border: 1px solid var(--hair-line);
  border-radius: 999px;
  background: var(--c-glass);
}

.masthead__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-neon);
  box-shadow: 0 0 0 3px rgba(0, 229, 192, 0.16);
}

.masthead__brand {
  display: inline-block;
  text-decoration: none;
  color: inherit;
}

.masthead__mark {
  display: block;
  font-size: clamp(30px, 6vw, 58px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: 0.16em;
  text-indent: 0.16em;
  color: var(--c-bone);
  transition: color var(--t-base) var(--ease);
}

.masthead__brand:hover .masthead__mark,
.masthead__brand:focus-visible .masthead__mark { color: var(--c-neon-soft); }

.masthead__tagline {
  margin: 0.5rem 0 0;
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  color: var(--c-mist);
}

@media (min-width: 901px) {
  .masthead { padding: 1.9rem 0 1.3rem; }
  .masthead__badge {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    margin: 0;
  }
}

.nav-bar {
  border-top: 1px solid rgba(18, 81, 63, 0.7);
  background: rgba(4, 20, 16, 0.45);
}

.nav-bar__inner {
  width: var(--shell);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-height: 58px;
}

.site-nav {
  flex: 1 1 auto;
  min-width: 0;
}

.site-nav__list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1rem, 2.8vw, 2.5rem);
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 0.35rem 0;
  font-size: 0.94rem;
  color: var(--c-mist);
  text-decoration: none;
  transition: color var(--t-base) var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--c-neon);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t-base) var(--ease);
}

.nav-link:hover,
.nav-link:focus-visible { color: var(--c-bone); }

.nav-link:hover::after,
.nav-link:focus-visible::after { transform: scaleX(1); }

.nav-link[aria-current="page"] { color: var(--c-neon); }

.nav-link[aria-current="page"]::after { transform: scaleX(1); }

.nav-cta {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  padding: 0.55em 1.15em;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--c-deep);
  background: var(--c-neon);
  border: 1px solid var(--c-neon);
  border-radius: var(--r-sm);
  text-decoration: none;
  transition: background-color var(--t-base) var(--ease),
              color var(--t-base) var(--ease),
              border-color var(--t-base) var(--ease);
}

.nav-cta:hover {
  background: transparent;
  color: var(--c-neon);
}

.nav-cta:active { background: var(--c-neon-soft); color: var(--c-deep); }

/* 移动导航按钮（桌面隐藏） */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.85rem;
  font-size: 0.86rem;
  letter-spacing: 0.06em;
  color: var(--c-bone);
  background: var(--c-glass);
  border: 1px solid var(--hair-line);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: border-color var(--t-base) var(--ease), color var(--t-base) var(--ease);
}

.nav-toggle:hover { border-color: var(--c-neon); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  background: var(--c-neon);
  transition: background-color var(--t-fast) var(--ease);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: var(--c-neon);
  transition: transform var(--t-base) var(--ease);
}

.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

.site-header[data-open] .nav-toggle { border-color: var(--c-neon); }
.site-header[data-open] .nav-toggle__bars { background: transparent; }
.site-header[data-open] .nav-toggle__bars::before { transform: translateY(5px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }

@media (max-width: 900px) {
  .nav-bar__inner {
    flex-wrap: wrap;
    gap: 0.75rem;
    padding-block: 0.55rem;
    min-height: 0;
  }

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

  .nav-cta { margin-left: auto; }

  .site-nav {
    order: 3;
    flex-basis: 100%;
    width: 100%;
    display: none;
    border-top: 1px solid var(--hair-line);
    padding-top: 0.5rem;
  }

  .site-header[data-open] .site-nav { display: block; }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-link {
    display: block;
    padding: 0.85rem 0.2rem;
    font-size: 1rem;
    border-bottom: 1px solid rgba(18, 81, 63, 0.55);
  }

  .nav-link::after { display: none; }

  .nav-link[aria-current="page"] {
    padding-left: 0.9rem;
    box-shadow: inset 3px 0 0 var(--c-neon);
  }
}

/* ---------- 12. 页脚 ---------- */
.site-footer {
  margin-top: clamp(3rem, 8vw, 7rem);
  padding-block: clamp(2.5rem, 5vw, 4.5rem) 1.75rem;
  background: var(--c-deep);
  border-top: 1px solid var(--hair-line);
  color: var(--c-mist);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 2fr) minmax(0, 1.1fr);
  gap: clamp(1.75rem, 4vw, 3.5rem);
}

.footer-brand__mark {
  margin: 0 0 0.6rem;
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--c-bone);
}

.footer-brand__line {
  margin: 0 0 0.9rem;
  max-width: 34ch;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--c-bone);
}

.footer-brand__meta {
  margin: 0;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--c-mist);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2rem);
}

.footer-group__title {
  margin: 0 0 0.9rem;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--c-neon-soft);
}

.footer-list li + li { margin-top: 0.55rem; }

.footer-link {
  display: inline-block;
  font-size: 0.92rem;
  color: var(--c-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-base) var(--ease), border-color var(--t-base) var(--ease);
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--c-neon);
  border-bottom-color: var(--c-neon);
}

.footer-contact__title {
  margin: 0 0 0.9rem;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--c-neon-soft);
}

.footer-contact__item {
  margin: 0 0 0.5rem;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--c-mist);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1.5rem;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 1.25rem;
  border-top: 1px solid var(--hair-line);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}

.footer-legal__icp { color: var(--c-bone); }

.footer-legal__note {
  margin-left: auto;
  color: var(--c-mist);
}

@media (max-width: 960px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-nav { grid-column: 1 / -1; }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-legal__note { margin-left: 0; width: 100%; }
}

/* ---------- 13. 滚动进度条（JS 注入） ---------- */
.scroll-meter {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 300;
  height: 3px;
  width: 0;
  pointer-events: none;
  background: linear-gradient(90deg, var(--c-neon), var(--c-ember));
  transition: width 100ms linear;
}

/* ---------- 14. 一次性显现 ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 500ms var(--ease), transform 500ms var(--ease);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 15. 动效降级与外层容器 ---------- */
@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;
    scroll-behavior: auto !important;
  }

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

  .glass-card:hover,
  .media-frame:hover img { transform: none; }
}

.page-main { display: block; }