/* =========================================================
   龙珠体育 CN 站 · 共享样式表 /assets/site.css
   仅承载 reset、变量、中文排版、共享头尾、通用组件
   ========================================================= */

*,
*::before,
*::after { box-sizing: border-box; }

:root {
  --void: #0B1220;
  --panel: #131C2E;
  --stone: #2A3345;
  --mist: #9AA6B8;
  --rice: #F4EFE6;
  --blaze: #FF4A1C;
  --ember: #C7320F;
  --cyan: #3AE0C8;
  --clay: #B4653F;
  --moss: #7C8C63;

  --rice-soft: rgba(244, 239, 230, 0.78);
  --rice-dim: rgba(244, 239, 230, 0.54);
  --cyan-soft: rgba(58, 224, 200, 0.55);

  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC",
    "SimSun", Georgia, serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", "Roboto Mono",
    "Cascadia Mono", Menlo, Consolas, monospace;

  --wrap: 1280px;
  --gutter: clamp(16px, 4.2vw, 48px);
  --header-top-h: 46px;
  --header-nav-h: 58px;
  --radius: 3px;
  --ease: cubic-bezier(0.22, 0.68, 0.3, 1);
  --dur: 180ms;
}

/* ---------- 文档与正文基础 ---------- */

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-nav-h) + 10px);
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--void);
  color: var(--rice);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--blaze);
  color: #14070D;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 0.5em;
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--rice);
}

h1 { font-size: clamp(34px, 4.6vw, 64px); }
h2 { font-size: clamp(26px, 3.1vw, 40px); }
h3 { font-size: clamp(18px, 1.9vw, 24px); }
h4 { font-size: clamp(16px, 1.5vw, 20px); }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--cyan);
  text-decoration: none;
}

a:hover { color: var(--blaze); }

ul,
ol { margin: 0 0 1em; padding-left: 1.2em; }

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

button { font: inherit; color: inherit; }

hr {
  border: 0;
  border-top: 1px solid var(--stone);
  margin: 0;
}

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

/* ---------- 布局工具 ---------- */

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.stack > * + * { margin-top: var(--stack, 16px); }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

.section {
  padding-block: clamp(56px, 8.5vw, 108px);
}

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-transform: uppercase;
}

.chapter-no {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(72px, 9vw, 128px);
  font-weight: 700;
  line-height: 0.82;
  letter-spacing: -0.03em;
  color: var(--clay);
  font-variant-numeric: tabular-nums;
  user-select: none;
}

.prose {
  max-width: 38em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--rice-soft);
}

.prose p { margin: 0 0 1.05em; }

.color-band {
  padding-block: clamp(30px, 5vw, 56px);
  background: var(--panel);
  border-block: 1px solid var(--stone);
}

.color-band--blaze {
  background: var(--blaze);
  border-color: var(--ember);
  color: #14070D;
}

.color-band--blaze h2,
.color-band--blaze h3,
.color-band--blaze .eyebrow { color: #14070D; }

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 跳过链接 ---------- */

.skip-link {
  position: fixed;
  top: -140px;
  left: 16px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--cyan);
  color: #05231E;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  border-radius: 2px;
  text-decoration: none;
  transition: top var(--dur) var(--ease);
}

.skip-link:focus { top: 14px; }

/* ---------- 共享头部 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--void);
  border-bottom: 1px solid var(--stone);
  transition: box-shadow 240ms var(--ease);
}

.site-header[data-collapsed="true"] {
  box-shadow: 0 18px 40px -24px rgba(0, 0, 0, 0.92);
}

.header-top {
  height: var(--header-top-h);
  overflow: hidden;
  border-bottom: 1px solid rgba(42, 51, 69, 0.75);
  transition: height 280ms var(--ease), opacity 180ms var(--ease);
}

.site-header[data-collapsed="true"] .header-top {
  height: 0;
  opacity: 0;
  border-bottom-color: transparent;
  pointer-events: none;
}

.header-top__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  height: var(--header-top-h);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--rice);
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark__ring {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--blaze);
}

.brand-mark__ring::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--blaze);
  opacity: 0.88;
}

.brand-mark__name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.brand-mark__tag {
  padding-left: 10px;
  border-left: 1px solid var(--stone);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.header-top__aside {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist);
}

.header-chip {
  padding: 3px 8px;
  border: 1px solid var(--stone);
  border-radius: 2px;
  letter-spacing: 0.08em;
  line-height: 1.5;
}

.header-chip--lang {
  color: var(--rice);
  border-color: var(--cyan-soft);
}

.header-nav { position: relative; }

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

.nav { margin-right: auto; }

.nav-mini-brand {
  display: none;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--rice);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav__list li { list-style: none; }

.nav__list a {
  position: relative;
  display: block;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.nav__list a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--blaze);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}

.nav__list a:hover { color: var(--rice); }
.nav__list a:hover::after { transform: scaleX(1); }

.nav__list a[aria-current="page"] { color: var(--rice); }
.nav__list a[aria-current="page"]::after { transform: scaleX(1); }

.nav__panel-link {
  display: none;
  padding: 12px 16px;
  margin-bottom: 12px;
  background: var(--blaze);
  color: #17070B;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: 2px;
  text-align: center;
  text-decoration: none;
}

.nav__panel-link:hover { background: var(--ember); color: var(--rice); }

.header-panel-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 15px;
  background: var(--blaze);
  color: #17070B;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  border-radius: 2px;
  text-decoration: none;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.header-panel-link::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.header-panel-link:hover {
  background: var(--ember);
  color: var(--rice);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  background: transparent;
  border: 1px solid var(--stone);
  border-radius: 2px;
  color: var(--rice);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.nav-toggle__bars {
  position: relative;
  display: inline-block;
  width: 14px;
  height: 11px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), top var(--dur) var(--ease),
    bottom var(--dur) var(--ease);
}

.nav-toggle__bars::before { top: 1px; }
.nav-toggle__bars::after { bottom: 1px; }

.site-header[data-open="true"] .nav-toggle__bars::before {
  top: 4.5px;
  transform: rotate(45deg);
}

.site-header[data-open="true"] .nav-toggle__bars::after {
  bottom: 5px;
  transform: rotate(-45deg);
}

.nav-scrim { display: none; }

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}

/* ---------- 共享页脚 ---------- */

.site-footer {
  margin-top: 0;
  background: var(--void);
  border-top: 1px solid var(--stone);
}

.footer-band {
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--blaze) 0 18%,
    var(--ember) 18% 30%,
    var(--clay) 30% 46%,
    var(--moss) 46% 62%,
    var(--cyan) 62% 80%,
    var(--stone) 80% 100%
  );
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 1.6fr 1fr;
  gap: 40px 48px;
  padding-top: 56px;
  padding-bottom: 44px;
}

.footer-brand__line {
  margin: 16px 0 0;
  max-width: 22em;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.footer-heading {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.footer-nav__cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.footer-nav__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.footer-nav__list li { list-style: none; }

.footer-nav__list a {
  position: relative;
  display: inline-block;
  color: var(--rice-soft);
  font-size: 14px;
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.footer-nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}

.footer-nav__list a:hover { color: var(--cyan); }
.footer-nav__list a:hover::after { transform: scaleX(1); }

.footer-stats {
  margin: 0;
  display: grid;
  gap: 12px;
}

.footer-stats > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 9px;
  border-bottom: 1px dashed var(--stone);
}

.footer-stats dt {
  font-size: 13px;
  color: var(--mist);
}

.footer-stats dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--rice);
  font-variant-numeric: tabular-nums;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 26px;
  padding-top: 18px;
  padding-bottom: 30px;
  border-top: 1px solid var(--stone);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist);
}

.footer-legal p { margin: 0; }

/* ---------- 通用按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  border: 1px solid transparent;
  border-radius: 2px;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.btn--solid {
  background: var(--blaze);
  color: #17070B;
  font-weight: 700;
}

.btn--solid:hover {
  background: var(--ember);
  color: var(--rice);
}

.btn--ghost {
  background: transparent;
  border-color: var(--stone);
  color: var(--rice);
}

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

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

.text-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.text-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -3px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}

.text-link:hover { color: var(--blaze); }
.text-link:hover::after { transform: scaleX(1); }

/* ---------- 面包屑 ---------- */

.crumbs {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist);
}

.crumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.crumbs__list li {
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.crumbs__list li:not(:last-child)::after {
  content: "›";
  color: var(--stone);
}

.crumbs__list a {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.crumbs__list a:hover { color: var(--cyan); }

.crumbs__list [aria-current="page"] { color: var(--rice); }

/* ---------- 数据卡片 ---------- */

.data-card {
  padding: 20px 22px;
  background: var(--panel);
  border: 1px solid var(--stone);
  border-radius: var(--radius);
  transition: border-color 200ms var(--ease), transform 200ms var(--ease);
}

.data-card:hover {
  border-color: var(--cyan-soft);
  transform: translateY(-2px);
}

.data-card__label {
  display: block;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.data-card__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--rice);
  font-variant-numeric: tabular-nums;
}

.data-card__value--blaze { color: var(--blaze); }
.data-card__value--cyan { color: var(--cyan); }
.data-card__value--clay { color: var(--clay); }

/* ---------- 图片容器基础规则 ---------- */

.media {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--stone);
  border-radius: var(--radius);
}

.media > img,
.media > svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media--wide { aspect-ratio: 16 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }

.media__placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
  background-image:
    linear-gradient(135deg, rgba(58, 224, 200, 0.1), transparent 55%),
    repeating-linear-gradient(90deg, var(--stone) 0 1px, transparent 1px 56px);
}

.media figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
  background: linear-gradient(transparent, rgba(11, 18, 32, 0.92));
}

.media-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

/* ---------- 响应式 ---------- */

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-data { grid-column: 1 / -1; }
}

@media (max-width: 960px) {
  .brand-mark__tag { display: none; }

  .header-nav__inner { justify-content: space-between; }

  .nav-mini-brand {
    display: inline-block;
    margin-right: auto;
  }

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

  .header-panel-link { display: none; }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 95;
    width: min(86vw, 340px);
    margin: 0;
    padding: 96px 24px 32px;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    background: var(--panel);
    border-left: 1px solid var(--stone);
    transform: translateX(102%);
    visibility: hidden;
    transition: transform 280ms var(--ease), visibility 0s linear 280ms;
  }

  .site-header[data-open="true"] .nav {
    transform: translateX(0);
    visibility: visible;
    transition: transform 280ms var(--ease), visibility 0s linear 0s;
  }

  .nav__panel-link { display: block; }

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

  .nav__list a {
    position: relative;
    padding: 15px 2px;
    font-size: 15px;
    letter-spacing: 0.04em;
    color: var(--rice);
    border-bottom: 1px solid var(--stone);
  }

  .nav__list a::after { display: none; }

  .nav__list a[aria-current="page"] {
    color: var(--blaze);
    padding-left: 16px;
  }

  .nav__list a[aria-current="page"]::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 6px;
    height: 6px;
    margin-top: -3px;
    border-radius: 50%;
    background: var(--blaze);
  }

  .nav-scrim {
    position: fixed;
    inset: 0;
    z-index: 90;
    display: none;
    padding: 0;
    margin: 0;
    border: 0;
    background: rgba(4, 8, 16, 0.72);
    cursor: pointer;
  }

  .site-header[data-open="true"] .nav-scrim { display: block; }

  body.has-drawer { overflow: hidden; }
}

@media (max-width: 780px) {
  .grid-12 { gap: 16px; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-top: 44px;
    padding-bottom: 34px;
  }

  .footer-nav__cols { gap: 22px; }

  .footer-legal { font-size: 11px; gap: 4px 18px; }
}

@media (max-width: 560px) {
  body { font-size: 15px; }

  .section { padding-block: 56px; }

  .footer-nav__cols { grid-template-columns: 1fr; }
}

/* ---------- 减少动态偏好 ---------- */

@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;
  }

  .data-card:hover,
  .btn:active { transform: none; }
}