/* =========================================================
   浩瀚体育安装 —— 共享 Site Kit
   /assets/site.css
   ========================================================= */

/* ---------- 0. 变量 ---------- */
:root {
  --night: #071426;
  --stand: #0E2138;
  --turf: #0F2A24;
  --cyan: #4FE3D0;
  --orange: #FF8A3D;
  --orange-soft: #FFC79A;
  --cyan-mist: #A9F3E7;
  --paper: #F1F5F7;
  --muted: #8FA6B8;
  --rule: #1E3A55;

  --shell: 1280px;
  --pad: 20px;
  --header-h: 84px;
  --header-h-compact: 56px;

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

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

@media (min-width: 900px) {
  :root { --pad: 32px; }
}

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--night);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@media (min-width: 900px) {
  body {
    font-size: 18px;
    line-height: 1.8;
  }
}

h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, pre { margin: 0; }

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

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

a {
  color: var(--cyan);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

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

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

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

/* ---------- 2. 基础排版 ---------- */
h1, h2, h3, h4 {
  font-weight: 300;
  letter-spacing: 0.02em;
  line-height: 1.12;
}

h1 { font-size: clamp(2.5rem, 7vw, 5.5rem); }
h2 { font-size: clamp(1.75rem, 3.6vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2.2vw, 1.75rem); }
h4 { font-size: 1.125rem; letter-spacing: 0.04em; }

p { max-width: 72ch; }

strong { font-weight: 600; color: var(--paper); }

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

/* ---------- 3. 语义化小件 ---------- */
.eyebrow {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan-mist);
  border: 1px solid var(--rule);
  padding: 4px 10px;
  border-radius: 999px;
  line-height: 1.4;
  white-space: nowrap;
}

.num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-stretch: 85%;
  letter-spacing: -0.02em;
  color: var(--orange);
  line-height: 1;
}

/* ---------- 4. 布局工具 ---------- */
.container {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.grid-rail {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
}

@media (min-width: 900px) {
  .grid-rail {
    grid-template-columns: minmax(0, 1fr) minmax(0, 2.2fr);
    gap: 56px;
  }
}

.rail {
  display: flex;
  flex-direction: column;
  gap: 20px;
  border-left: 1px solid var(--rule);
  padding-left: 20px;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.section-head__index {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  font-family: var(--font-mono);
}

.section-head__title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 300;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.prose { max-width: 72ch; }

.prose > * + * { margin-top: 1.4em; }

.prose h2 { margin-top: 2em; }

.prose ul,
.prose ol {
  padding-left: 1.2em;
  list-style: disc;
}

.prose ol { list-style: decimal; }

.prose li + li { margin-top: 0.5em; }

.prose blockquote {
  border-left: 2px solid var(--cyan);
  padding-left: 20px;
  color: var(--muted);
}

.breadcrumb {
  padding-block: 20px;
  font-size: 13px;
  letter-spacing: 0.06em;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  color: var(--muted);
}

.breadcrumb__list > li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--rule);
}

.breadcrumb__list a { color: var(--muted); }
.breadcrumb__list a:hover { color: var(--cyan); }
.breadcrumb__list [aria-current="page"] { color: var(--paper); }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 2px;
  font-size: 14px;
  letter-spacing: 0.06em;
  line-height: 1.2;
  border: 1px solid transparent;
  transition: background-color 180ms var(--ease),
              color 180ms var(--ease),
              border-color 180ms var(--ease);
}

.btn--primary {
  background-color: var(--orange);
  color: var(--night);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: var(--orange-soft);
  color: var(--night);
}

.btn--ghost {
  background-color: transparent;
  color: var(--cyan);
  border-color: var(--rule);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan-mist);
}

/* ---------- 6. 图片容器 ---------- */
.image-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 3px;
  background-color: var(--stand);
  background-image:
    linear-gradient(135deg, rgba(79, 227, 208, 0.14) 0%, rgba(7, 20, 38, 0) 55%),
    linear-gradient(315deg, rgba(255, 138, 61, 0.14) 0%, rgba(7, 20, 38, 0) 55%);
}

.image-frame--wide { aspect-ratio: 21 / 9; }

.image-frame > img,
.image-frame > picture > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-frame__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  padding: 32px 20px 14px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--paper);
  background: linear-gradient(180deg, rgba(7, 20, 38, 0) 0%, rgba(7, 20, 38, 0.88) 100%);
}

/* ---------- 7. 极简卡片 ---------- */
.card {
  display: block;
  background-color: var(--stand);
  padding: 24px;
  border-radius: 3px;
  transition: background-color 220ms var(--ease),
              border-color 220ms var(--ease);
}

.card:hover .num,
.card:focus-within .num { color: var(--orange-soft); }

.card__head {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  letter-spacing: -0.02em;
  color: var(--orange);
  line-height: 1;
}

.card__body {
  margin-top: 12px;
  color: var(--paper);
}

.card__foot {
  margin-top: 16px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 8. 跳转链 ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 16px;
  background-color: var(--cyan);
  color: var(--night);
  font-size: 13px;
  letter-spacing: 0.06em;
  border-radius: 2px;
  transform: translateY(-160%);
  transition: transform 200ms var(--ease);
}

.skip-link:focus-visible {
  transform: translateY(0);
  outline-color: var(--night);
  outline-offset: 2px;
}

/* ---------- 9. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 70;
  background-color: var(--night);
  border-bottom: 1px solid transparent;
  transition: border-color 240ms var(--ease),
              background-color 240ms var(--ease);
}

.site-header[data-scrolled] {
  background-color: var(--night);
  border-bottom-color: var(--rule);
}

.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: var(--progress, 0%);
  height: 2px;
  background-image: linear-gradient(90deg, var(--cyan) 0%, var(--cyan) 70%, var(--orange) 100%);
  pointer-events: none;
  transition: width 90ms linear;
}

.header-shell {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad);
  min-height: var(--header-h);
  transition: min-height 260ms var(--ease);
}

.site-header[data-scrolled] .header-shell {
  min-height: var(--header-h-compact);
}

/* 品牌 */
.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  justify-self: start;
  color: var(--paper);
}

.brand:hover { color: var(--paper); }

.brand__mark {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-stretch: 85%;
  font-size: 17px;
  letter-spacing: -0.015em;
  line-height: 1.25;
  white-space: nowrap;
  transition: font-size 220ms var(--ease);
}

.site-header[data-scrolled] .brand__mark { font-size: 15px; }

.brand__meta {
  display: block;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  white-space: nowrap;
  transition: opacity 200ms var(--ease);
}

.site-header[data-scrolled] .brand__meta {
  opacity: 0;
  height: 0;
  overflow: hidden;
}

/* 状态条 */
.header-strip {
  justify-self: start;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  opacity: 0;
  transform: translateY(4px);
  pointer-events: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
  transition: opacity 240ms var(--ease), transform 240ms var(--ease);
}

.site-header[data-scrolled] .header-strip {
  opacity: 1;
  transform: translateY(0);
}

/* 导航 */
.site-nav { justify-self: end; }

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 30px;
}

.site-nav__list a {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  color: var(--paper);
  font-size: 14px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.site-nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background-color: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 220ms var(--ease);
}

.site-nav__list a:hover,
.site-nav__list a:focus-visible { color: var(--cyan-mist); }

.site-nav__list a:hover::after,
.site-nav__list a:focus-visible::after { transform: scaleX(1); }

.site-nav__list a[aria-current="page"] {
  color: var(--cyan);
  outline-offset: 6px;
}

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

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  position: relative;
  z-index: 90;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--paper);
}

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

.nav-toggle__lines {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 20px;
  height: 12px;
}

.nav-toggle__lines i {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--cyan);
  transition: transform 220ms var(--ease), opacity 220ms var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__lines i:first-child {
  transform: translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__lines i:last-child {
  transform: translateY(-5px) rotate(-45deg);
}

@media (max-width: 899px) {
  .header-shell {
    grid-template-columns: 1fr auto;
    gap: 12px;
  }

  .header-strip { display: none; }

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

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 60;
    display: none;
    flex-direction: column;
    justify-content: center;
    background-color: var(--night);
    background-image:
      linear-gradient(160deg, rgba(79, 227, 208, 0.08) 0%, rgba(7, 20, 38, 0) 60%),
      linear-gradient(340deg, rgba(255, 138, 61, 0.08) 0%, rgba(7, 20, 38, 0) 60%);
    padding: 96px var(--pad) 48px;
    overflow-y: auto;
  }

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

  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    width: 100%;
  }

  .site-nav__list li {
    width: 100%;
    border-bottom: 1px solid var(--rule);
  }

  .site-nav__list a {
    display: block;
    padding: 18px 0;
    font-size: clamp(1.35rem, 6vw, 1.85rem);
    font-weight: 300;
    letter-spacing: 0.04em;
    width: 100%;
  }

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

  .site-nav__list a[aria-current="page"] { color: var(--cyan); }
}

/* ---------- 10. 页脚 ---------- */
.site-footer {
  margin-top: 96px;
  background-color: var(--night);
  border-top: 1px solid var(--rule);
}

.footer-status {
  background-color: var(--stand);
  border-bottom: 1px solid var(--rule);
}

.footer-status__label,
.footer-status__list {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.footer-status__label {
  display: block;
  padding-top: 16px;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.footer-status__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 24px;
  padding-bottom: 20px;
  padding-top: 10px;
}

@media (min-width: 720px) {
  .footer-status__list { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.footer-status__name {
  display: block;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan-mist);
}

.footer-status__value {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
}

.footer-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 56px var(--pad) 40px;
}

@media (min-width: 720px) {
  .footer-shell {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px 32px;
  }
}

@media (min-width: 1024px) {
  .footer-shell {
    grid-template-columns: 1.4fr 1fr 1.5fr 1fr;
    gap: 48px;
  }
}

.footer-col { min-width: 0; }

.footer-brand {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-stretch: 85%;
  font-size: 20px;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.footer-brand:hover { color: var(--cyan-mist); }

.footer-brand__note {
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.footer-head {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}

.footer-list > li + li { margin-top: 10px; }

.footer-list a {
  color: var(--paper);
  font-size: 14px;
  letter-spacing: 0.03em;
}

.footer-list a:hover,
.footer-list a:focus-visible { color: var(--cyan); }

.footer-list--contact > li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-key {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.footer-val {
  font-size: 14px;
  color: var(--paper);
  word-break: break-word;
}

.footer-icp {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 20px var(--pad) 32px;
  border-top: 1px solid var(--rule);
}

.footer-base__copy,
.footer-base__note {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 11. 滚动揭示 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 620ms var(--ease), transform 620ms var(--ease);
}

[data-reveal].is-in {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 12. 减少动效 ---------- */
@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-reveal] {
    opacity: 1;
    transform: none;
  }

  .scroll-progress { transition: none; }
}