/* ============================================================
   悟空竞技 · 悟空体育CN
   共享站点核心 CSS
   文件：/assets/site.css
   视觉系统：戈壁竞技场
   包含：变量 / 重置 / 排版 / 容器 / 网格 / 按钮 / 组件
        / 头部 / 页脚 / 动效 / 可访问性 / 响应式
   ============================================================ */

:root {
  --color-bg: #4A4A4A;
  --color-bg-deep: #1E1E1E;
  --color-gold: #C9A96E;
  --color-sand: #F5EBDD;
  --color-green: #2D7F42;
  --color-orange: #E8590C;
  --color-white: #FFFFFF;
  --color-brown: #6B5B3E;

  --font-title: Impact, 'Arial Black', 'Noto Sans SC', 'PingFang SC', sans-serif;
  --font-body: Georgia, 'Noto Serif SC', 'Songti SC', serif;

  --container-width: 1440px;
  --gutter: clamp(1.25rem, 3vw, 3rem);
  --radius-chamfer: 3px 12px;
  --transition: 220ms cubic-bezier(.2, .8, .3, 1);
  --header-height: 74px;
}

/* ---------- 重置与基础 ---------- */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-sand);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(110% 55% at 82% -5%, rgba(232, 89, 12, .13), transparent 62%),
    radial-gradient(90% 42% at 8% 108%, rgba(45, 127, 66, .16), transparent 64%),
    linear-gradient(160deg, #3f3f3f 0%, #484848 45%, #363636 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

ul,
ol {
  padding-inline-start: 1.25em;
}

a {
  color: var(--color-gold);
  text-decoration-thickness: 1px;
  text-underline-offset: .22em;
  transition: color var(--transition), background-color var(--transition), border-color var(--transition), transform var(--transition), opacity var(--transition);
}

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

:focus-visible {
  outline: 3px solid var(--color-orange);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 标题排版 ---------- */

h1,
h2,
h3,
h4 {
  font-family: var(--font-title);
  line-height: 1.12;
  letter-spacing: .02em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-top: 0;
}

h1 {
  font-size: clamp(2.4rem, 6vw, 5.75rem);
}

h2 {
  font-size: clamp(1.7rem, 3.5vw, 3rem);
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.8rem);
}

p {
  margin-top: 0;
}

/* ---------- 容器 / 章节 / 网格 ---------- */

.container {
  width: min(var(--container-width), 92vw);
  margin-inline: auto;
}

.section {
  padding-block: clamp(3rem, 7vw, 6rem);
}

.section--narrow {
  width: min(880px, 92vw);
  margin-inline: auto;
  padding-block: clamp(2.5rem, 5vw, 4.5rem);
}

.section--dark {
  background: var(--color-bg-deep);
}

.grid {
  display: grid;
  gap: var(--gutter);
}

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

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

@media (max-width: 860px) {
  .grid--halves,
  .grid--thirds {
    grid-template-columns: 1fr;
  }
}

/* ---------- 通用文本组件 ---------- */

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: .8rem;
  font-family: var(--font-title);
  font-size: .8rem;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--color-orange);
  margin-block-end: .75rem;
}

.section-kicker::before {
  content: "";
  width: 34px;
  height: 3px;
  background: var(--color-green);
  flex: 0 0 auto;
}

.display-title {
  font-family: var(--font-title);
  font-size: clamp(2.6rem, 7vw, 6rem);
  line-height: .98;
  letter-spacing: .01em;
  text-transform: uppercase;
  color: var(--color-sand);
  margin-block-end: 1.5rem;
}

.prose {
  font-size: 1.0625rem;
  line-height: 1.9;
  color: rgba(245, 235, 221, .92);
}

.prose p + p {
  margin-top: 1.1em;
}

.prose a {
  color: var(--color-gold);
}

.prose h2,
.prose h3 {
  margin-block-start: 1.6em;
  margin-block-end: .55em;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: .88rem;
  color: var(--color-brown);
}

.breadcrumbs li {
  display: inline-flex;
  align-items: center;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-inline: .5rem;
  color: var(--color-brown);
}

.breadcrumbs a {
  color: var(--color-gold);
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .72rem 1.5rem;
  font-family: var(--font-title);
  font-size: .9rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  text-decoration: none;
  line-height: 1;
  color: var(--color-sand);
  background: transparent;
  border: 2px solid var(--color-brown);
  border-radius: var(--radius-chamfer);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn:hover {
  transform: translateY(-3px);
  border-color: var(--color-gold);
}

.btn--primary {
  color: var(--color-white);
  border-color: var(--color-green);
  background: linear-gradient(145deg, #2D7F42, #206230);
}

.btn--primary:hover {
  border-color: var(--color-gold);
  background: linear-gradient(145deg, #348f4b, #256e37);
  box-shadow: 0 8px 20px rgba(45, 127, 66, .35);
}

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

.btn--ghost:hover {
  background: rgba(201, 169, 110, .12);
}

.btn--small {
  padding: .45rem 1rem;
  font-size: .78rem;
}

.btn:focus-visible {
  box-shadow: 0 0 0 3px var(--color-orange);
}

/* ---------- 标签 / 碎条 ---------- */

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.chip {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-title);
  font-size: .78rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-sand);
  background: var(--color-bg-deep);
  border: 1px solid var(--color-brown);
  border-radius: 999px;
  padding: .35rem 1rem;
  text-decoration: none;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.chip:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.tag {
  display: inline-block;
  font-family: var(--font-title);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--color-green);
  border: 1px solid currentColor;
  border-radius: 2px;
  padding: .2rem .65rem;
}

.tag--hot {
  color: var(--color-orange);
}

/* ---------- 卡片 / 面板 ---------- */

.cut-panel {
  position: relative;
  background: var(--color-bg-deep);
  border: 1px solid rgba(201, 169, 110, .28);
  clip-path: polygon(18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%, 0 18px);
  padding: clamp(1.25rem, 2.5vw, 2.25rem);
}

.card {
  position: relative;
  background: rgba(30, 30, 30, .78);
  border: 1px solid rgba(201, 169, 110, .24);
  border-radius: 2px 14px;
  padding: clamp(1.25rem, 2vw, 1.75rem);
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}

.card:hover {
  transform: translateY(-8px) rotate(-.7deg);
  border-color: rgba(232, 89, 12, .75);
}

/* ---------- 媒体占位容器 ---------- */

.media-ratio {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(201, 169, 110, .1), transparent 45%),
    var(--color-bg-deep);
  border: 1px solid rgba(201, 169, 110, .18);
}

.media-ratio--wide {
  aspect-ratio: 16 / 9;
}

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

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

.media-ratio::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(135deg, rgba(255, 255, 255, .04) 0 1px, transparent 1px 16px),
    linear-gradient(160deg, transparent 40%, rgba(232, 89, 12, .08));
  z-index: 0;
}

.media-ratio::after {
  content: attr(data-label);
  position: absolute;
  left: .75rem;
  bottom: .75rem;
  z-index: 2;
  font-family: var(--font-title);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--color-sand);
  background: rgba(30, 30, 30, .78);
  border-inline-start: 3px solid var(--color-green);
  padding: .3rem .65rem;
}

.media-ratio img,
.media-ratio__img {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s ease, filter .6s ease;
}

.media-ratio:hover img {
  transform: scale(1.04);
}

/* ---------- 装饰轨迹线 ---------- */

.trail-line {
  position: relative;
  height: 2px;
  overflow: hidden;
  background: linear-gradient(90deg, var(--color-brown), var(--color-green), var(--color-gold));
}

.trail-line::before {
  content: "";
  position: absolute;
  top: 0;
  left: -45%;
  width: 45%;
  height: 100%;
  background: rgba(255, 255, 255, .8);
  animation: trail-flow 2.4s linear infinite;
}

@keyframes trail-flow {
  from {
    left: -45%;
  }
  to {
    left: 120%;
  }
}

/* ---------- 跳过链接 ---------- */

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1800;
  font-family: var(--font-title);
  font-size: .85rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-bg-deep);
  background: var(--color-gold);
  padding: .7rem 1.2rem;
  border-radius: 4px;
  transform: translateY(-180%);
  transition: transform var(--transition);
}

.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 共享头部 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, .02) 0 1px, transparent 1px 110px),
    linear-gradient(180deg, #262626 0%, #1B1B1B 100%);
  border-bottom: 1px solid rgba(201, 169, 110, .28);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  width: min(var(--container-width), 92vw);
  margin-inline: auto;
  min-height: var(--header-height);
  padding-block: .55rem;
}

/* 滚动进度线 */

.scroll-progress {
  position: relative;
  height: 3px;
  width: 100%;
  background: rgba(255, 255, 255, .06);
  overflow: hidden;
}

.scroll-progress::after {
  content: "";
  display: block;
  height: 100%;
  width: var(--progress, 0%);
  background: linear-gradient(90deg, var(--color-green), var(--color-gold), var(--color-orange));
  transition: width .18s ease-out;
}

/* 品牌 */

.brand {
  display: inline-flex;
}

.brand__link {
  display: inline-flex;
  align-items: center;
  gap: .85rem;
  text-decoration: none;
}

.brand__mark {
  display: inline-grid;
  grid-template-columns: repeat(3, 5px);
  align-items: end;
  gap: 4px;
  width: 26px;
  height: 30px;
}

.brand__mark-line {
  display: block;
  width: 5px;
  height: 16px;
  background: var(--color-green);
  transform-origin: bottom;
  animation: pulse-dash 1.6s ease-in-out infinite alternate;
}

.brand__mark-line:nth-child(2) {
  height: 27px;
  background: var(--color-gold);
  animation-delay: .2s;
}

.brand__mark-line:nth-child(3) {
  height: 11px;
  background: var(--color-orange);
  animation-delay: .4s;
}

@keyframes pulse-dash {
  from {
    transform: scaleY(.6);
  }
  to {
    transform: scaleY(1.15);
  }
}

.brand__text {
  display: grid;
  gap: .15rem;
}

.brand__name {
  font-family: var(--font-title);
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-sand);
}

.brand__sub {
  font-family: var(--font-body);
  font-size: .65rem;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--color-brown);
}

/* 导航开关 */

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  width: 48px;
  height: 48px;
  padding: .35rem .5rem;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 24px;
  height: 2px;
  margin: 3px auto;
  background: var(--color-sand);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle__label {
  font-family: var(--font-title);
  font-size: .6rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-sand);
  line-height: 1;
  margin-top: 4px;
}

/* 导航容器 */

.nav-wrap {
  display: none;
  align-items: center;
  gap: 1.5rem;
}

.nav-wrap[data-open="true"] {
  display: block;
  width: 100%;
  padding-block: .35rem .6rem;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .15rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  position: relative;
}

.nav-item + .nav-item::before {
  content: "/";
  color: var(--color-brown);
  margin-inline: .55rem .9rem;
}

.nav-link {
  display: inline-block;
  position: relative;
  z-index: 1;
  font-family: var(--font-title);
  font-size: .82rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-sand);
  padding-block: .3rem;
  border-block-end: 3px solid transparent;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 62%;
  height: 3px;
  background: var(--color-green);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform var(--transition);
}

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

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

.nav-cta {
  margin-inline-start: .75rem;
}

/* 头部打开状态：移动端按钮变形 */

.site-header[data-open] .nav-toggle__bar:nth-child(1) {
  transform: translateY(6px) rotate(40deg);
}

.site-header[data-open] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.site-header[data-open] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-6px) rotate(-40deg);
}

.site-header[data-open] .nav-toggle__label {
  opacity: .65;
}

/* ---------- 共享页脚 ---------- */

.site-footer {
  position: relative;
  background: var(--color-bg-deep);
  color: var(--color-sand);
  border-top: 4px solid var(--color-brown);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 26%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-green), var(--color-gold), var(--color-orange));
}

.site-footer__bar {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, .04), transparent 32%),
    repeating-linear-gradient(115deg, transparent 0 18px, rgba(201, 169, 110, .045) 18px 20px),
    var(--color-bg-deep);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1.4fr;
  gap: clamp(2rem, 5vw, 4rem);
  width: min(var(--container-width), 92vw);
  margin-inline: auto;
  padding-block: clamp(2.5rem, 5vw, 4rem) 2rem;
}

.site-footer__brand {
  display: grid;
  align-content: start;
  gap: 1rem;
}

.brand--footer .brand__name {
  font-size: 2.1rem;
}

.site-footer__statement {
  max-width: 36rem;
  font-size: .95rem;
  line-height: 1.8;
  color: rgba(245, 235, 221, .72);
  margin: 0;
}

.site-footer__heading {
  font-family: var(--font-title);
  font-size: .8rem;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--color-orange);
  border-block-end: 1px solid rgba(201, 169, 110, .25);
  padding-block-end: .65rem;
  margin-block-end: 1rem;
}

.site-footer__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .55rem;
  font-size: .95rem;
  line-height: 1.55;
}

.site-footer__list a {
  color: var(--color-gold);
  text-decoration-color: rgba(232, 89, 12, .4);
  text-underline-offset: .25em;
}

.site-footer__list a:hover {
  color: var(--color-orange);
}

.site-footer__meta {
  background: #111;
  border-top: 1px solid rgba(201, 169, 110, .18);
}

.site-footer__meta-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .85rem;
  width: min(var(--container-width), 92vw);
  margin-inline: auto;
  padding-block: 1rem 1.15rem;
  font-size: .85rem;
  color: rgba(245, 235, 221, .72);
}

.site-footer__icp {
  margin: 0;
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: .9rem 1.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer__legal a {
  color: var(--color-sand);
  text-decoration: none;
  border-block-end: 1px solid transparent;
}

.site-footer__legal a:hover {
  color: var(--color-gold);
  border-block-end-color: var(--color-gold);
}

/* ---------- 响应式 ---------- */

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-wrap {
    display: none;
    order: 5;
  }

  .nav-wrap[data-open="true"] {
    display: block;
    width: 100%;
    padding-block: .5rem .75rem;
    border-top: 1px solid rgba(201, 169, 110, .22);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: .2rem;
  }

  .nav-item + .nav-item::before {
    content: none;
  }

  .nav-link {
    display: flex;
    padding-block: .85rem;
    font-size: 1rem;
    border-block-end: 1px solid rgba(201, 169, 110, .13);
  }

  .nav-cta {
    margin: 1rem 0 .25rem;
    width: 100%;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 2.2rem;
  }

  .site-footer__meta-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .scroll-progress::after {
    transition: none;
  }

  .trail-line::before {
    animation: none;
  }
}