/* =========================================================
   半岛赛事 · 共享样式 /assets/site.css
   高原夜空底 + 经幡五色数据高亮 + 精密网格直角模块
   ========================================================= */

/* ---------- 1. reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 104px;
}
body { margin: 0; }
h1, h2, h3, h4, h5, h6, p, ul, ol, figure, blockquote, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. tokens ---------- */
:root {
  --ink-900: #0A1230;
  --ink-800: #0F1B3D;
  --ink-700: #1B2B5C;
  --ink-600: #2E4A8F;
  --data:    #4DA3FF;
  --paper:   #F2F6FF;
  --white:   #FFFFFF;
  --red:     #D93A3A;
  --green:   #2FA36B;
  --yellow:  #E8B33A;
  --muted:   #8A97B8;
  --line:    #22305C;
  --text-body: #DCE4F8;

  --font-head: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: var(--font-head);
  --font-mono: ui-monospace, SFMono-Regular, "JetBrains Mono", "IBM Plex Mono", "Roboto Mono", Menlo, Consolas, monospace;

  --header-h: 84px;
  --gap: 8px;
  --radius: 2px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 3. base ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
/* 96px 基准网格 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(to right, rgba(34, 48, 92, .55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(34, 48, 92, .55) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: .32;
}
/* 轻微颗粒/扫描纹理 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(242, 246, 255, .022) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(242, 246, 255, .014) 0 1px, transparent 1px 5px);
  opacity: .55;
}
body[data-nav-open="true"] { overflow: hidden; }

main, .site-footer { position: relative; z-index: 1; }

#main-content { padding-top: var(--header-h); }
#main-content[data-bleed] { padding-top: 0; }

/* ---------- 4. focus / selection ---------- */
:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 2px;
  border-radius: var(--radius);
}
::selection { background: var(--ink-600); color: var(--white); }

.skip-link {
  position: absolute;
  top: -72px;
  left: 16px;
  z-index: 300;
  padding: 10px 18px;
  background: var(--yellow);
  color: var(--ink-900);
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius);
  transition: top .16s var(--ease);
}
.skip-link:focus { top: 16px; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 5. layout ---------- */
.wrap {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 48px;
}
.section { padding: 72px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 20px;
  margin-bottom: 28px;
}

.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}
.col-3  { grid-column: span 3; }
.col-4  { grid-column: span 4; }
.col-5  { grid-column: span 5; }
.col-7  { grid-column: span 7; }
.col-8  { grid-column: span 8; }
.col-9  { grid-column: span 9; }
.col-12 { grid-column: span 12; }

/* ---------- 6. typography ---------- */
.h1, .h2, .h3, .h4 {
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.12;
  color: var(--paper);
}
.h1 { font-size: clamp(34px, 5vw, 56px); }
.h2 { font-size: clamp(26px, 3.4vw, 40px); }
.h3 { font-size: clamp(20px, 2.2vw, 28px); }
.h4 { font-size: 20px; letter-spacing: -.01em; }

.lead {
  font-size: 18px;
  line-height: 1.7;
  color: #C6D2EE;
  max-width: 38em;
}
.muted { color: var(--muted); }
.mono { font-family: var(--font-mono); letter-spacing: .04em; }
.num { font-family: var(--font-mono); letter-spacing: .08em; font-variant-numeric: tabular-nums; }

.eyebrow {
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--muted);
  text-transform: uppercase;
}
.vertical-label {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--muted);
}

p { max-width: 38em; }

/* ---------- 7. buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--paper);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color .16s var(--ease), border-color .16s var(--ease), color .16s var(--ease), transform .16s var(--ease);
}
.btn:hover { background: var(--ink-600); border-color: var(--data); }
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--data);
  border-color: var(--data);
  color: var(--ink-900);
}
.btn-primary:hover { background: #7CBCFF; border-color: #7CBCFF; color: var(--ink-900); }
.btn-ghost { background: transparent; }
.btn-sm { padding: 8px 14px; font-size: 13px; }
.btn-block { width: 100%; }

/* ---------- 8. header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background-color: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color .2s var(--ease), border-color .2s var(--ease);
}
.site-header[data-scrolled="true"] {
  background-color: rgba(15, 27, 61, .96);
  border-bottom-color: var(--line);
}
.site-header::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  background: rgba(10, 18, 48, .74);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s var(--ease);
}
.site-header[data-nav-open="true"]::after { opacity: 1; }

.header-inner {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 28px;
  height: var(--header-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}
.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: var(--data);
  color: var(--ink-900);
  font-size: 18px;
  font-weight: 900;
  border-radius: var(--radius);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-size: 18px; font-weight: 900; letter-spacing: -.02em; color: var(--paper); }
.brand-sub { font-size: 11px; letter-spacing: .2em; color: var(--muted); }

.site-nav {
  display: flex;
  align-items: center;
  flex: 1 1 auto;
  min-width: 0;
}
.nav-group { display: flex; align-items: center; }
.nav-group + .nav-group {
  margin-left: 20px;
  padding-left: 20px;
  border-left: 1px solid var(--line);
}
.nav-group-title { display: none; }
.nav-list { display: flex; align-items: center; gap: 2px; }

.nav-link {
  position: relative;
  display: inline-block;
  padding: 9px 12px;
  font-size: 15px;
  color: var(--paper);
  border-radius: var(--radius);
  transition: color .16s var(--ease), background-color .16s var(--ease);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: 2px;
  height: 2px;
  background: var(--yellow);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .16s var(--ease);
}
.nav-link:hover { color: var(--data); background: rgba(46, 74, 143, .3); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link[aria-current="page"] { color: var(--paper); font-weight: 700; }
.nav-link[aria-current="page"]::after { transform: scaleX(1); }

.nav-utility {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
  padding-left: 20px;
  border-left: 1px solid var(--line);
}
.utility-link {
  font-size: 13px;
  color: var(--muted);
  transition: color .16s var(--ease);
}
.utility-link:hover { color: var(--data); }

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(15, 27, 61, .7);
  transition: border-color .16s var(--ease), background-color .16s var(--ease);
}
.nav-toggle:hover { border-color: var(--ink-600); }
.nav-toggle-bars {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--paper);
  transition: transform .18s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars:nth-child(1) { transform: translateY(3.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars:nth-child(2) { transform: translateY(-3.5px) rotate(-45deg); }

.scroll-progress {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  pointer-events: none;
}
.scroll-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--data), var(--yellow));
}

/* ---------- 9. generic components ---------- */
.card {
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform .16s var(--ease), border-color .16s var(--ease), background-color .16s var(--ease);
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--ink-600);
  background: #122045;
}
.card-title { font-size: 20px; font-weight: 900; letter-spacing: -.01em; line-height: 1.3; }
.card-meta {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.data-chip {
  display: inline-flex;
  align-items: baseline;
  gap: .08em;
  padding: 2px 8px;
  background: var(--white);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-weight: 700;
  border-radius: var(--radius);
}
.stat {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--data);
  font-variant-numeric: tabular-nums;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}
.dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: 0 0 auto;
}
.dot-blue   { background: var(--data); }
.dot-green  { background: var(--green); }
.dot-red    { background: var(--red); }
.dot-yellow { background: var(--yellow); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  font-size: 13px;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  transition: color .16s var(--ease), border-color .16s var(--ease), background-color .16s var(--ease);
}
.tag:hover { color: var(--paper); border-color: var(--ink-600); }
.tag[aria-pressed="true"] {
  color: var(--paper);
  background: var(--ink-600);
  border-color: var(--data);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 18px 0;
  font-size: 13px;
  color: var(--muted);
}
.breadcrumb li { display: flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before { content: "/"; color: var(--ink-700); }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--data); }
.breadcrumb [aria-current="page"] { color: var(--paper); }

.anchor-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.anchor-nav a {
  padding: 6px 10px;
  font-size: 13px;
  color: var(--muted);
  border-left: 2px solid transparent;
  transition: color .16s var(--ease), background-color .16s var(--ease), border-color .16s var(--ease);
}
.anchor-nav a:hover { color: var(--paper); background: rgba(46, 74, 143, .25); }
.anchor-nav a[aria-current="true"] {
  color: var(--paper);
  border-left-color: var(--yellow);
  background: rgba(46, 74, 143, .3);
}

/* ---------- 10. image frames ---------- */
.img-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--ink-800);
  background-image: linear-gradient(135deg, rgba(46, 74, 143, .38), rgba(10, 18, 48, .95));
}
.img-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.72) contrast(1.06) brightness(.94);
}
.img-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(10, 18, 48, .06), rgba(10, 18, 48, .58));
}
.img-16x9 { aspect-ratio: 16 / 9; }
.img-4x3  { aspect-ratio: 4 / 3; }
.img-1x1  { aspect-ratio: 1 / 1; }
.img-21x9 { aspect-ratio: 21 / 9; }
.img-caption {
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

/* ---------- 11. reveal ---------- */
html[data-js="true"] [data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .32s var(--ease), transform .32s var(--ease);
}
html[data-js="true"] [data-reveal][data-revealed="true"] {
  opacity: 1;
  transform: none;
}

/* ---------- 12. footer ---------- */
.site-footer {
  position: relative;
  margin-top: 96px;
  padding: 64px 0 28px;
  background: var(--ink-800);
  border-top: 1px solid var(--line);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -2px; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    var(--data) 0 20%,
    var(--paper) 20% 40%,
    var(--red) 40% 60%,
    var(--green) 60% 80%,
    var(--yellow) 80% 100%);
  opacity: .9;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr 1.5fr;
  gap: 32px;
}
.footer-brand { display: flex; flex-direction: column; }
.footer-logo { font-size: 24px; font-weight: 900; letter-spacing: -.02em; color: var(--paper); }
.footer-sub { margin-top: 6px; font-size: 11px; letter-spacing: .2em; color: var(--muted); }
.footer-slogan {
  margin-top: 18px;
  font-size: 14px;
  color: var(--data);
  letter-spacing: .06em;
}

.footer-col { min-width: 0; }
.footer-col-title {
  margin-bottom: 14px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .28em;
  color: var(--muted);
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 14px;
  color: var(--text-body);
  transition: color .16s var(--ease);
}
.footer-links a:hover { color: var(--data); }

.footer-contact-list { display: flex; flex-direction: column; gap: 12px; }
.footer-contact-item { display: flex; flex-direction: column; gap: 2px; }
.contact-label {
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--muted);
}
.contact-value {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--paper);
  word-break: break-all;
}
.contact-value-text {
  font-family: var(--font-body);
  letter-spacing: .02em;
  word-break: normal;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}
.footer-legal { font-family: var(--font-mono); }
.footer-closing { color: var(--data); }

/* ---------- 13. responsive ---------- */
@media (max-width: 1180px) {
  .utility-link { display: none; }
  .nav-utility { gap: 12px; padding-left: 12px; }
  .nav-group + .nav-group { margin-left: 12px; padding-left: 12px; }
}

@media (max-width: 1024px) {
  .col-3, .col-4, .col-5 { grid-column: span 6; }
  .col-7, .col-8, .col-9 { grid-column: span 12; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 980px) {
  :root { --header-h: 64px; }
  .wrap { padding: 0 20px; }
  .header-inner { gap: 12px; }
  .brand-sub { display: none; }
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 2;
    width: min(86vw, 336px);
    max-width: 100%;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: calc(var(--header-h) + 20px) 24px 40px;
    background: var(--ink-800);
    border-right: 1px solid var(--line);
    overflow-y: auto;
    transform: translateX(-102%);
    transition: transform .22s var(--ease);
  }
  .site-nav[data-open="true"] { transform: translateX(0); }

  .nav-group { display: block; padding: 18px 0; border-top: 1px solid var(--line); }
  .nav-group + .nav-group { margin-left: 0; padding-left: 0; border-left: 0; }
  .nav-group:first-child { padding-top: 0; border-top: 0; }
  .nav-group-title {
    display: block;
    margin-bottom: 10px;
    font-size: 11px;
    letter-spacing: .3em;
    color: var(--muted);
  }
  .nav-list { display: block; }
  .nav-list li + li { margin-top: 2px; }
  .nav-link { display: block; padding: 12px; font-size: 17px; font-weight: 700; }
  .nav-link::after { left: 12px; right: auto; width: 18px; bottom: 6px; }
  .nav-link:hover { background: rgba(46, 74, 143, .3); }

  .nav-utility {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    margin: 20px 0 0;
    padding: 20px 0 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .utility-link {
    display: block;
    padding: 10px 12px;
    font-size: 15px;
    color: var(--paper);
    border: 1px solid var(--line);
    border-radius: var(--radius);
  }
  .utility-link:hover { color: var(--data); border-color: var(--ink-600); }
  .btn-sm { width: 100%; padding: 12px 16px; font-size: 14px; }
}

@media (max-width: 720px) {
  .section { padding: 52px 0; }
  .lead { font-size: 16px; }
  .vertical-label { writing-mode: horizontal-tb; }
  .anchor-nav { overflow-x: auto; flex-wrap: nowrap; }
  .anchor-nav a { white-space: nowrap; }
}

@media (max-width: 640px) {
  .bento > * { grid-column: span 12; }
  .card { padding: 18px; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .site-footer { padding-top: 48px; margin-top: 64px; }
  .footer-base { flex-direction: column; align-items: flex-start; }
}

/* ---------- 14. motion preference ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  html[data-js="true"] [data-reveal] { opacity: 1 !important; transform: none !important; }
  .card:hover { transform: none; }
}