/* ==========================================================================
   大江体育 / 共享站点样式  /assets/site.css
   夜间赛场转播室 · 海报分层 · 展签索引
   ========================================================================== */

:root {
  --dj-deep: #061826;
  --dj-deepest: #030f19;
  --dj-panel: #0b2a45;
  --dj-panel-soft: #0e3253;
  --dj-orange: #ff6a1a;
  --dj-orange-soft: rgba(255, 106, 26, 0.14);
  --dj-mint: #2ef2c8;
  --dj-mint-soft: rgba(46, 242, 200, 0.12);
  --dj-blue: #3d8bff;
  --dj-violet: #7b61ff;
  --dj-paper: #f4f7fb;
  --dj-mist: #93a4b8;
  --dj-red: #ff3b5c;
  --dj-yellow: #f5c542;
  --dj-ink: #08151f;
  --dj-line: rgba(244, 247, 251, 0.16);
  --dj-line-soft: rgba(244, 247, 251, 0.08);
  --dj-shadow: 0 24px 56px -32px rgba(0, 0, 0, 0.95);

  --dj-font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --dj-font-display: "Barlow Condensed", "Archivo Narrow", "Noto Sans SC",
    "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --dj-font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular,
    Menlo, Consolas, monospace;

  --dj-radius: 2px;
  --dj-shell: 1280px;
  --dj-gutter: clamp(16px, 4vw, 44px);
  --dj-section-pad: clamp(40px, 6.5vw, 88px);

  --dj-h1: clamp(2.4rem, 6.4vw, 5.5rem);
  --dj-h2: clamp(1.75rem, 3.6vw, 2.9rem);
  --dj-h3: clamp(1.2rem, 2vw, 1.7rem);
  --dj-idx: 11px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 124px;
}

body {
  margin: 0;
  min-height: 100%;
  font-family: var(--dj-font-body);
  font-size: 17px;
  line-height: 1.78;
  color: var(--dj-paper);
  background-color: var(--dj-deep);
  background-image:
    radial-gradient(900px 520px at 84% -10%, rgba(61, 139, 255, 0.18), transparent 70%),
    radial-gradient(760px 480px at 4% 2%, rgba(46, 242, 200, 0.1), transparent 72%),
    repeating-linear-gradient(90deg, rgba(244, 247, 251, 0.035) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(244, 247, 251, 0.028) 0 1px, transparent 1px 96px);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

/* --------------------------------------------------------- 中文排版基础 */
h1,
h2,
h3,
h4 {
  margin: 0 0 0.55em;
  font-family: var(--dj-font-display);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--dj-paper);
}

h1 {
  font-size: var(--dj-h1);
  line-height: 0.98;
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--dj-h2);
}

h3 {
  font-size: var(--dj-h3);
}

h4 {
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

p {
  margin: 0 0 1.1em;
}

p:last-child,
ul:last-child,
ol:last-child {
  margin-bottom: 0;
}

ul,
ol {
  margin: 0 0 1.1em;
  padding-left: 1.35em;
}

li {
  margin-bottom: 0.4em;
}

strong,
b {
  font-weight: 700;
  color: #ffffff;
}

small {
  font-size: 12px;
  letter-spacing: 0.04em;
}

a {
  color: var(--dj-mint);
  text-decoration: none;
  transition: color 0.16s ease;
}

a:hover {
  color: var(--dj-orange);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

code,
kbd,
samp {
  font-family: var(--dj-font-mono);
  font-size: 0.92em;
  padding: 0.1em 0.4em;
  background: rgba(61, 139, 255, 0.14);
  border-radius: var(--dj-radius);
}

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

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

#main-content {
  display: block;
  min-height: 45vh;
}

#main-content:focus,
#main-content:focus-visible {
  outline: none;
}

/* --------------------------------------------------------------- 骨架 */
.dj-shell {
  width: 100%;
  max-width: var(--dj-shell);
  margin-inline: auto;
  padding-inline: var(--dj-gutter);
}

.dj-section {
  padding-block: var(--dj-section-pad);
}

.dj-hr {
  height: 0;
  border: 0;
  border-top: 1px dashed var(--dj-line);
  margin: clamp(24px, 4vw, 44px) 0;
}

/* -------------------------------------------------------- skip link */
.dj-skip {
  position: fixed;
  top: -120px;
  left: 16px;
  z-index: 400;
  padding: 12px 20px;
  background: var(--dj-orange);
  color: var(--dj-ink);
  font-family: var(--dj-font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: var(--dj-radius);
  text-decoration: none;
  transition: top 0.16s ease;
}

.dj-skip:focus,
.dj-skip:focus-visible {
  top: 14px;
  color: var(--dj-ink);
  text-decoration: none;
}

/* ------------------------------------------------------------- header */
.dj-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background: linear-gradient(180deg, rgba(4, 18, 28, 0.98) 0%, rgba(6, 24, 38, 0.97) 100%);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--dj-line);
}

.dj-header__top {
  border-bottom: 1px solid var(--dj-line-soft);
}

.dj-header__top-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  min-height: 44px;
  padding-block: 8px;
}

.dj-header__brandline {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  min-width: 0;
}

.dj-brandmark {
  position: relative;
  padding-left: 14px;
  font-family: var(--dj-font-display);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--dj-paper);
  white-space: nowrap;
}

.dj-brandmark::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 4px;
  height: 17px;
  transform: translateY(-50%);
  background: var(--dj-orange);
}

.dj-header__rule {
  display: inline-block;
  width: 1px;
  height: 14px;
  background: var(--dj-line);
}

.dj-header__tagline {
  font-family: var(--dj-font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--dj-mist);
  white-space: nowrap;
}

.dj-header__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 14px;
  margin: 0;
  font-family: var(--dj-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--dj-mist);
}

.dj-header__meta-label {
  color: var(--dj-mint);
  letter-spacing: 0.2em;
}

.dj-header__tel {
  color: var(--dj-paper);
  font-weight: 700;
  letter-spacing: 0.06em;
}

.dj-header__meta-item {
  color: var(--dj-mist);
  letter-spacing: 0.08em;
}

/* 第二层导航带 */
.dj-header__navzone {
  position: relative;
  background: rgba(11, 42, 69, 0.55);
  border-top: 1px solid var(--dj-line-soft);
}

.dj-header__navinner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 30px);
  padding-block: 10px;
}

.dj-nav {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  justify-content: space-between;
  gap: clamp(12px, 2vw, 28px);
  min-width: 0;
}

.dj-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px clamp(6px, 1.5vw, 22px);
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: djnav;
}

.dj-nav__item {
  counter-increment: djnav;
  margin: 0;
}

.dj-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 2px 8px;
  color: rgba(244, 247, 251, 0.78);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.18s ease;
}

.dj-nav__link::before {
  content: counter(djnav, decimal-leading-zero);
  font-family: var(--dj-font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--dj-mist);
  opacity: 0.7;
}

.dj-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--dj-orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.22s ease;
}

.dj-nav__link:hover,
.dj-nav__link:focus-visible {
  color: #ffffff;
  text-decoration: none;
}

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

.dj-nav__link[aria-current="page"] {
  color: #ffffff;
}

.dj-nav__link[aria-current="page"]::before {
  color: var(--dj-orange);
  opacity: 1;
}

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

.dj-nav__cta {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  background: var(--dj-orange);
  color: var(--dj-ink);
  font-family: var(--dj-font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  white-space: nowrap;
  border-radius: var(--dj-radius);
  text-decoration: none;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18);
  transition: background 0.18s ease, color 0.18s ease;
}

.dj-nav__cta::after {
  content: "→";
  font-size: 12px;
  line-height: 1;
}

.dj-nav__cta:hover,
.dj-nav__cta:focus-visible {
  background: var(--dj-mint);
  color: var(--dj-ink);
  text-decoration: none;
}

/* 移动导航按钮 */
.dj-nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 14px 9px 12px;
  background: transparent;
  color: var(--dj-paper);
  border: 1px solid var(--dj-line);
  border-radius: var(--dj-radius);
  cursor: pointer;
  font-family: var(--dj-font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  transition: border-color 0.18s ease, color 0.18s ease;
}

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

.dj-nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  width: 16px;
}

.dj-nav-toggle__bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--dj-orange);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.dj-nav-toggle[aria-expanded="true"] .dj-nav-toggle__bar:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.dj-nav-toggle[aria-expanded="true"] .dj-nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.dj-nav-toggle[aria-expanded="true"] .dj-nav-toggle__bar:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

.dj-nav-toggle__label {
  line-height: 1;
}

/* 阅读进度 */
.dj-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(46, 242, 200, 0.14);
  pointer-events: none;
}

.dj-progress__fill {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--dj-mint) 0%, var(--dj-blue) 55%, var(--dj-orange) 100%);
  transition: width 0.09s linear;
}

/* ------------------------------------------------------------- footer */
.dj-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 96px);
  background: linear-gradient(180deg, #051624 0%, var(--dj-deepest) 100%);
  border-top: 1px solid var(--dj-line);
}

.dj-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--dj-orange) 0%, var(--dj-mint) 46%, rgba(46, 242, 200, 0) 88%);
}

.dj-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 0.9fr 1.25fr 0.9fr;
  gap: clamp(24px, 4vw, 48px);
  padding-block: clamp(40px, 6vw, 72px);
}

.dj-footer__col {
  min-width: 0;
}

.dj-footer__brand {
  margin: 0 0 12px;
  font-family: var(--dj-font-display);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1;
  color: var(--dj-paper);
}

.dj-footer__claim {
  margin: 0 0 14px;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--dj-mist);
}

.dj-footer__note {
  margin: 0;
  font-family: var(--dj-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--dj-mint);
}

.dj-footer__title {
  margin: 0 0 16px;
  font-family: var(--dj-font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--dj-mint);
}

.dj-footer__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.dj-footer__list li {
  margin: 0;
}

.dj-footer__list a {
  color: rgba(244, 247, 251, 0.8);
  font-size: 14px;
  text-decoration: none;
}

.dj-footer__list a:hover,
.dj-footer__list a:focus-visible {
  color: var(--dj-orange);
  text-decoration: none;
}

.dj-footer__list span {
  display: block;
  color: var(--dj-mist);
  font-size: 14px;
  line-height: 1.7;
  word-break: break-word;
}

.dj-footer__base {
  border-top: 1px solid var(--dj-line-soft);
  background: rgba(3, 15, 25, 0.66);
}

.dj-footer__base-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 28px;
  padding-block: 18px;
}

.dj-footer__cpy {
  margin: 0;
  font-family: var(--dj-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--dj-mist);
}

/* --------------------------------------------------------- 通用按钮 */
.dj-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: var(--dj-radius);
  background: var(--dj-orange);
  color: var(--dj-ink);
  font-family: var(--dj-font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.dj-btn:hover,
.dj-btn:focus-visible {
  background: #ff8543;
  color: var(--dj-ink);
  text-decoration: none;
}

.dj-btn--ghost {
  background: transparent;
  color: var(--dj-paper);
  border-color: var(--dj-line);
}

.dj-btn--ghost:hover,
.dj-btn--ghost:focus-visible {
  background: rgba(46, 242, 200, 0.08);
  border-color: var(--dj-mint);
  color: var(--dj-mint);
}

.dj-btn--mint {
  background: var(--dj-mint);
  color: #04231d;
}

.dj-btn--mint:hover,
.dj-btn--mint:focus-visible {
  background: #6ff8dc;
  color: #04231d;
}

/* --------------------------------------------------------- 面包屑 */
.dj-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(16px, 3vw, 28px);
  padding: 0;
  list-style: none;
  font-family: var(--dj-font-mono);
  font-size: var(--dj-idx);
  letter-spacing: 0.1em;
  color: var(--dj-mist);
}

.dj-crumbs li {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}

.dj-crumbs li + li::before {
  content: "/";
  color: rgba(244, 247, 251, 0.3);
}

.dj-crumbs a {
  color: var(--dj-mist);
  text-decoration: none;
}

.dj-crumbs a:hover,
.dj-crumbs a:focus-visible {
  color: var(--dj-mint);
  text-decoration: none;
}

.dj-crumbs [aria-current="page"] {
  color: var(--dj-paper);
}

/* --------------------------------------------------------- 正文容器 */
.dj-prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(244, 247, 251, 0.9);
}

.dj-prose > h2 {
  margin-top: 1.8em;
  padding-top: 0.6em;
  border-top: 1px solid var(--dj-line-soft);
}

.dj-prose > h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.dj-prose > h3 {
  margin-top: 1.6em;
}

.dj-prose ul,
.dj-prose ol {
  padding-left: 1.2em;
}

.dj-prose li::marker {
  color: var(--dj-orange);
}

.dj-prose blockquote {
  margin: 1.6em 0;
  padding: 14px 20px;
  border-left: 3px solid var(--dj-mint);
  background: rgba(46, 242, 200, 0.06);
  color: rgba(244, 247, 251, 0.92);
}

.dj-prose blockquote p:last-child {
  margin-bottom: 0;
}

/* ------------------------------------------------------------- 网格 */
.dj-grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}

.dj-grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.dj-grid--split {
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
}

/* --------------------------------------------------------- 章节标题 */
.dj-eyebrow {
  display: block;
  margin: 0 0 12px;
  font-family: var(--dj-font-mono);
  font-size: var(--dj-idx);
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--dj-mint);
}

.dj-section-title {
  margin: 0 0 0.5em;
  font-family: var(--dj-font-display);
  font-size: var(--dj-h2);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--dj-paper);
}

/* --------------------------------------------------------- 面板组件 */
.dj-panel {
  position: relative;
  padding: clamp(18px, 2.6vw, 28px);
  background: var(--dj-panel);
  border: 1px solid var(--dj-line);
  border-radius: var(--dj-radius);
  box-shadow: var(--dj-shadow);
}

.dj-panel::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  width: 48px;
  height: 2px;
  background: var(--dj-orange);
}

.dj-panel--paper {
  background: var(--dj-paper);
  color: #0a2135;
  border-color: rgba(10, 33, 53, 0.16);
}

.dj-panel--paper::before {
  background: var(--dj-blue);
}

.dj-panel--paper h2,
.dj-panel--paper h3,
.dj-panel--paper h4 {
  color: #061826;
}

.dj-panel--paper a {
  color: #0b5ab8;
}

.dj-panel--paper a:hover {
  color: var(--dj-orange);
}

.dj-panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--dj-line-soft);
}

.dj-panel--paper .dj-panel__head {
  border-bottom-color: rgba(10, 33, 53, 0.14);
}

/* --------------------------------------------------------- 标签体系 */
.dj-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  border-left: 2px solid var(--dj-orange);
  background: var(--dj-orange-soft);
  font-family: var(--dj-font-mono);
  font-size: var(--dj-idx);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dj-orange);
}

.dj-tag {
  display: inline-block;
  padding: 3px 8px;
  border: 1px solid rgba(61, 139, 255, 0.35);
  border-radius: var(--dj-radius);
  background: rgba(61, 139, 255, 0.16);
  color: #9fc4ff;
  font-family: var(--dj-font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  line-height: 1.6;
}

.dj-tag--orange {
  background: var(--dj-orange-soft);
  border-color: rgba(255, 106, 26, 0.4);
  color: #ffb083;
}

.dj-tag--mint {
  background: var(--dj-mint-soft);
  border-color: rgba(46, 242, 200, 0.4);
  color: #7ff5dd;
}

.dj-tag--violet {
  background: rgba(123, 97, 255, 0.18);
  border-color: rgba(123, 97, 255, 0.42);
  color: #b5a8ff;
}

.dj-tag--yellow {
  background: rgba(245, 197, 66, 0.16);
  border-color: rgba(245, 197, 66, 0.42);
  color: #f6d67d;
}

.dj-tag--red {
  background: rgba(255, 59, 92, 0.16);
  border-color: rgba(255, 59, 92, 0.42);
  color: #ff90a3;
}

.dj-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border: 1px solid var(--dj-line);
  border-radius: 999px;
  background: rgba(11, 42, 69, 0.6);
  color: rgba(244, 247, 251, 0.82);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
  cursor: pointer;
  transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.dj-chip:hover {
  border-color: var(--dj-mint);
  color: #ffffff;
}

.dj-chip[aria-pressed="true"],
.dj-chip[data-active] {
  background: var(--dj-mint);
  border-color: var(--dj-mint);
  color: #04231d;
}

.dj-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--dj-font-mono);
  font-size: var(--dj-idx);
  letter-spacing: 0.14em;
  color: var(--dj-mint);
}

.dj-status__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--dj-mint);
  box-shadow: 0 0 0 3px rgba(46, 242, 200, 0.18);
}

.dj-num {
  font-family: var(--dj-font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--dj-paper);
}

/* ------------------------------------------------------- 媒体容器 */
.dj-media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--dj-line);
  border-radius: var(--dj-radius);
  background: #0a2338;
}

.dj-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.dj-media--wide {
  aspect-ratio: 21 / 9;
}

.dj-media--tall {
  aspect-ratio: 3 / 4;
}

.dj-media--square {
  aspect-ratio: 1 / 1;
}

.dj-media__ph {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  text-align: center;
  font-family: var(--dj-font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: rgba(244, 247, 251, 0.46);
  background-image:
    radial-gradient(120% 120% at 20% 0%, rgba(61, 139, 255, 0.24), transparent 62%),
    radial-gradient(90% 90% at 90% 100%, rgba(46, 242, 200, 0.14), transparent 64%),
    repeating-linear-gradient(45deg, rgba(244, 247, 251, 0.05) 0 2px, transparent 2px 12px);
  background-color: #0a2338;
}

.dj-media__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  padding: 10px 12px;
  background: linear-gradient(180deg, rgba(3, 15, 25, 0) 0%, rgba(3, 15, 25, 0.9) 100%);
  font-family: var(--dj-font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: rgba(244, 247, 251, 0.82);
}

/* --------------------------------------------------- 页内章节索引 */
.dj-spy {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--dj-font-mono);
  font-size: var(--dj-idx);
  letter-spacing: 0.1em;
}

.dj-spy li {
  margin: 0;
}

.dj-spy__link {
  display: block;
  padding: 8px 10px;
  border-left: 2px solid var(--dj-line);
  color: var(--dj-mist);
  text-decoration: none;
  transition: color 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.dj-spy__link:hover,
.dj-spy__link:focus-visible {
  color: var(--dj-paper);
  border-left-color: rgba(46, 242, 200, 0.55);
  text-decoration: none;
}

.dj-spy__link[data-active] {
  color: var(--dj-mint);
  border-left-color: var(--dj-mint);
  background: rgba(46, 242, 200, 0.06);
}

/* --------------------------------------------------------- 响应式 */
@keyframes dj-nav-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1080px) {
  .dj-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .dj-footer__col--brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 980px) {
  html {
    scroll-padding-top: 110px;
  }

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

  .dj-nav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 10;
    padding: 8px var(--dj-gutter) 18px;
    background: #071f33;
    border-top: 1px solid var(--dj-line);
    border-bottom: 1px solid var(--dj-line);
    box-shadow: 0 28px 52px -26px rgba(0, 0, 0, 0.95);
  }

  .dj-nav[data-open] {
    display: flex;
    animation: dj-nav-in 0.24s ease both;
  }

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

  .dj-nav__item {
    border-top: 1px solid var(--dj-line-soft);
  }

  .dj-nav__item:first-child {
    border-top: 0;
  }

  .dj-nav__link {
    display: flex;
    width: 100%;
    padding: 14px 4px;
    font-size: 16px;
    white-space: normal;
  }

  .dj-nav__link::after {
    display: none;
  }

  .dj-nav__link[aria-current="page"] {
    padding-left: 12px;
    border-left: 2px solid var(--dj-orange);
    background: rgba(255, 106, 26, 0.08);
  }

  .dj-nav__cta {
    justify-content: center;
    margin-top: 16px;
    padding-block: 12px;
  }

  .dj-grid--2,
  .dj-grid--3,
  .dj-grid--split {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 780px) {
  body {
    font-size: 16px;
  }

  .dj-header__tagline {
    display: none;
  }

  .dj-header__rule {
    display: none;
  }

  .dj-prose {
    font-size: 16px;
  }
}

@media (max-width: 640px) {
  .dj-header__meta-item {
    display: none;
  }

  .dj-footer__grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .dj-footer__base-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}

@media (max-width: 420px) {
  .dj-header__meta-label {
    display: none;
  }
}

/* --------------------------------------------------- 动效偏好约束 */
@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;
  }

  .dj-progress__fill {
    transition: none;
  }

  .dj-nav__link::after,
  .dj-skip {
    transition: none;
  }
}