/* 九州体育官网 - 站点样式
   风格定位：体育游戏研发工作室 + 体育科技实验室，深色工程感界面，内容密度优先 */

:root {
  --bg: #0a0d13;
  --bg-alt: #0d1119;
  --panel: #12161f;
  --panel-2: #171c28;
  --panel-3: #1c2231;
  --border: #262d3d;
  --border-soft: #1c2230;
  --text: #e9edf5;
  --text-dim: #a7b0c2;
  --text-mute: #707a8f;
  --cyan: #34e2c8;
  --purple: #8c7cf0;
  --orange: #ff7a3d;
  --green: #63e08a;
  --blue: #4f86f7;
  --red: #ef5a6f;
  --radius: 10px;
  --maxw: 1280px;
  --font: "PingFang SC", "Microsoft YaHei", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: "JetBrains Mono", "Consolas", "SFMono-Regular", Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(52,226,200,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(52,226,200,0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(ellipse 100% 60% at 50% 0%, #000 0%, transparent 70%);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; position: relative; z-index: 1; }

/* ---------- Topbar / Header ---------- */
.topbar {
  background: #060810;
  border-bottom: 1px solid var(--border-soft);
  font-size: 13px;
  color: var(--text-mute);
}
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; height: 36px; }
.topbar a { color: var(--text-mute); margin-left: 16px; }
.topbar a:hover { color: var(--cyan); text-decoration: none; }
.topbar .tag { color: var(--cyan); font-family: var(--mono); letter-spacing: 0.02em; }

.site-header {
  background: rgba(10,13,19,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 9px;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  color: #061018; font-weight: 800; font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono);
  flex: none;
}
.brand-text { font-size: 19px; font-weight: 700; color: var(--text); line-height: 1.2; }
.brand-text small { display: block; font-size: 11px; font-weight: 400; color: var(--text-mute); letter-spacing: 0.06em; font-family: var(--mono); margin-top: 2px; }
.main-nav { display: flex; gap: 4px; flex-wrap: wrap; }
.main-nav a {
  color: var(--text-dim); font-size: 14.5px; padding: 8px 12px; border-radius: 7px;
}
.main-nav a:hover { color: var(--text); background: var(--panel-2); text-decoration: none; }
.main-nav a.active { color: var(--cyan); background: rgba(52,226,200,0.1); }

.crumbs { border-bottom: 1px solid var(--border-soft); background: var(--bg-alt); }
.crumbs .wrap { display: flex; gap: 6px; align-items: center; height: 42px; font-size: 13px; color: var(--text-mute); }
.crumbs a { color: var(--text-mute); }
.crumbs a:hover { color: var(--cyan); }
.crumbs .cur { color: var(--text-dim); }
.crumbs .sep { color: #3a4258; }

/* ---------- Hero ---------- */
.hero { padding: 44px 0 30px; border-bottom: 1px solid var(--border-soft); }
.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.12em;
  color: var(--cyan); background: rgba(52,226,200,0.08);
  border: 1px solid rgba(52,226,200,0.25); padding: 5px 12px; border-radius: 999px;
  margin-bottom: 16px; text-transform: uppercase;
}
.hero h1 {
  font-size: 32px; line-height: 1.35; margin: 0 0 16px; font-weight: 800;
  color: var(--text); max-width: 920px;
}
.hero p.lead { font-size: 16.5px; color: var(--text-dim); max-width: 900px; margin: 0 0 22px; }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px; }
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: linear-gradient(135deg, var(--cyan), var(--blue)); color: #061018;
  padding: 11px 20px; border-radius: 8px; font-weight: 700; font-size: 14.5px;
}
.btn:hover { text-decoration: none; opacity: 0.9; }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn.ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn.orange { background: linear-gradient(135deg, var(--orange), #ffb43d); }

.hero-svg-frame {
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--panel); padding: 8px; overflow-x: auto;
}
.hero-svg-frame svg { display: block; margin: 0 auto; }
.svg-caption { text-align: center; font-size: 12.5px; color: var(--text-mute); font-family: var(--mono); margin-top: 10px; letter-spacing: 0.03em; }

/* ---------- Layout ---------- */
.wrap.layout { display: grid; grid-template-columns: 1fr; gap: 40px; padding-top: 34px; padding-bottom: 60px; }
.wrap.layout.with-side { grid-template-columns: 1fr 300px; align-items: start; }
@media (max-width: 900px) { .wrap.layout.with-side { grid-template-columns: 1fr; } }

.section { margin-bottom: 46px; }
.section-head { margin-bottom: 16px; }
.section-head .eyebrow {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--orange); margin-bottom: 8px; display: block;
}
.section h2 { font-size: 24px; font-weight: 800; color: var(--text); margin: 0 0 6px; }
.section h3 { font-size: 18.5px; font-weight: 700; color: var(--text); margin: 26px 0 10px; }
.section-intro { color: var(--text-dim); font-size: 15.5px; max-width: 880px; }
.content p { color: var(--text-dim); margin: 0 0 16px; }
.content article p { color: var(--text-dim); }
.content ul, .content ol { color: var(--text-dim); padding-left: 22px; margin: 0 0 16px; }
.content li { margin-bottom: 6px; }
.content strong { color: var(--text); }

/* ---------- Cards / Grids ---------- */
.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; } }
@media (max-width: 1100px) and (min-width: 901px) { .grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, 1fr); } }

.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--cyan); }
.card h3 { margin-top: 0; font-size: 16.5px; }
.card h3 a { color: var(--text); }
.card h3 a:hover { color: var(--cyan); text-decoration: none; }
.card p { font-size: 14.5px; margin-bottom: 10px; }
.card .meta { font-size: 12.5px; color: var(--text-mute); font-family: var(--mono); }

.art-card { display: flex; flex-direction: column; overflow: hidden; padding: 0; }
.art-card img { border-bottom: 1px solid var(--border); }
.art-card .body { padding: 16px; display: flex; flex-direction: column; flex: 1; }
.art-card .tag {
  align-self: flex-start; font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em;
  color: var(--cyan); background: rgba(52,226,200,0.1); padding: 3px 9px; border-radius: 999px; margin-bottom: 10px;
}
.art-card .tag.orange { color: var(--orange); background: rgba(255,122,61,0.1); }
.art-card .tag.purple { color: var(--purple); background: rgba(140,124,240,0.12); }
.art-card .tag.green { color: var(--green); background: rgba(99,224,138,0.1); }

.feature-card {
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel);
  padding: 22px; margin-bottom: 18px;
}
.feature-card .tag { font-family: var(--mono); font-size: 11.5px; color: var(--orange); letter-spacing: 0.08em; }
.feature-card h3 { font-size: 19px; margin: 8px 0 12px; }
.feature-card h3 a { color: var(--text); }

/* ---------- Pipeline / Stage chain ---------- */
.stage-chain { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0; }
.stage {
  flex: 1 1 200px; background: var(--panel); border: 1px solid var(--border); border-radius: 9px;
  padding: 16px; position: relative;
}
.stage .num { font-family: var(--mono); font-size: 12px; color: var(--orange); letter-spacing: 0.08em; }
.stage h4 { margin: 6px 0 8px; font-size: 15.5px; color: var(--text); }
.stage p { font-size: 13.5px; color: var(--text-dim); margin: 0 0 8px; }
.stage .links a { font-size: 12.5px; margin-right: 10px; }

/* ---------- Table ---------- */
table.spec { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14.5px; }
table.spec th, table.spec td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; color: var(--text-dim); }
table.spec th { background: var(--panel-2); color: var(--text); font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.04em; text-transform: uppercase; }
table.spec tr:nth-child(even) td { background: rgba(255,255,255,0.015); }

/* ---------- Device / role field list ---------- */
.field-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 10px; margin: 14px 0 20px; }
.field-box { background: var(--panel-2); border: 1px solid var(--border-soft); border-radius: 8px; padding: 12px 14px; }
.field-box .k { font-family: var(--mono); font-size: 11px; color: var(--cyan); letter-spacing: 0.08em; display: block; margin-bottom: 4px; }
.field-box .v { font-size: 13.5px; color: var(--text-dim); }

/* ---------- Problem -> Role board ---------- */
.problem-row { border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); padding: 18px; margin-bottom: 14px; }
.problem-row .q { font-size: 16px; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.problem-row .q::before { content: "「"; color: var(--orange); }
.problem-row .q::after { content: "」"; color: var(--orange); }
.role-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.role-chip {
  font-family: var(--mono); font-size: 12.5px; background: var(--panel-3); border: 1px solid var(--border);
  padding: 6px 11px; border-radius: 7px; color: var(--text-dim);
}
.role-chip b { color: var(--cyan); font-weight: 600; }

/* ---------- FAQ ---------- */
.faq-item { border-bottom: 1px solid var(--border-soft); padding: 16px 0; }
.faq-item:last-child { border-bottom: none; }
.faq-item .q { font-weight: 700; color: var(--text); margin-bottom: 8px; font-size: 15.5px; }
.faq-item .q::before { content: "Q  "; color: var(--cyan); font-family: var(--mono); }
.faq-item .a { color: var(--text-dim); font-size: 14.5px; }
.faq-item .a::before { content: "A  "; color: var(--orange); font-family: var(--mono); }

/* ---------- Sidebar ---------- */
.side-box { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.side-box h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-mute); font-family: var(--mono); margin: 0 0 12px; }
.side-box ul { list-style: none; padding: 0; margin: 0; }
.side-box li { margin-bottom: 10px; padding-bottom: 10px; border-bottom: 1px solid var(--border-soft); font-size: 14px; }
.side-box li:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.side-box a { color: var(--text-dim); }
.side-box a:hover { color: var(--cyan); }

/* ---------- Article page ---------- */
.article-head { max-width: 820px; margin-bottom: 26px; }
.article-head h1 { font-size: 28px; line-height: 1.4; margin: 10px 0 14px; }
.article-meta { display: flex; gap: 14px; flex-wrap: wrap; font-size: 13px; color: var(--text-mute); font-family: var(--mono); margin-bottom: 16px; }
.article-meta span { display: inline-flex; align-items: center; }
.article-cover { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-bottom: 30px; max-width: 900px; }
.article-body { max-width: 780px; }
.article-body h2 { font-size: 21px; margin: 34px 0 12px; padding-top: 4px; }
.article-body h2:first-child { margin-top: 0; }
.article-body p { font-size: 16px; color: var(--text-dim); }
.article-body ul, .article-body ol { font-size: 16px; }
.callout {
  border-left: 3px solid var(--cyan); background: var(--panel); padding: 14px 18px; border-radius: 0 8px 8px 0;
  font-size: 14.5px; color: var(--text-dim); margin: 22px 0;
}
.callout b { color: var(--text); }
.related-box { max-width: 780px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; margin-top: 34px; }
.related-box h4 { margin: 0 0 12px; font-size: 14px; color: var(--text-mute); font-family: var(--mono); letter-spacing: 0.06em; text-transform: uppercase; }
.related-box ul { margin: 0; padding-left: 18px; }
.related-box li { margin-bottom: 8px; }

/* ---------- Topic page ---------- */
.topic-intro { max-width: 860px; font-size: 16px; color: var(--text-dim); }
.topic-intro p { margin-bottom: 16px; }

/* ---------- Company / footer ---------- */
.company-box {
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel);
  padding: 26px 28px; margin: 46px 0 10px;
}
.company-box h2 { margin-top: 0; }
.company-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); gap: 14px; margin-top: 18px; font-size: 14px; }
.company-grid .k { color: var(--text-mute); font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.06em; display: block; margin-bottom: 3px; text-transform: uppercase; }
.company-grid .v { color: var(--text); }

.site-footer { border-top: 1px solid var(--border); background: var(--bg-alt); padding: 34px 0 22px; margin-top: 20px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px; margin-bottom: 24px; }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h5 { font-size: 12.5px; color: var(--text-mute); text-transform: uppercase; letter-spacing: 0.08em; font-family: var(--mono); margin: 0 0 12px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 8px; }
.footer-grid a { color: var(--text-dim); font-size: 14px; }
.footer-grid a:hover { color: var(--cyan); }
.footer-bottom { border-top: 1px solid var(--border-soft); padding-top: 18px; font-size: 12.5px; color: var(--text-mute); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.footer-bottom a { color: var(--text-mute); }
.disclaimer { font-size: 12.5px; color: var(--text-mute); max-width: 900px; margin-top: 10px; line-height: 1.7; }

/* ---------- Misc ---------- */
.divider { height: 1px; background: var(--border-soft); margin: 40px 0; }
.pill-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }
.pill { font-family: var(--mono); font-size: 12.5px; background: var(--panel-2); border: 1px solid var(--border); color: var(--text-dim); padding: 5px 12px; border-radius: 999px; }
.updates-list { display: flex; flex-direction: column; gap: 14px; }
.update-item { border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); padding: 16px 20px; display: grid; grid-template-columns: 140px 90px 1fr; gap: 16px; align-items: start; }
@media (max-width: 720px) { .update-item { grid-template-columns: 1fr; } }
.update-item .date { font-family: var(--mono); font-size: 13px; color: var(--text-mute); }
.update-item .cat { font-family: var(--mono); font-size: 11.5px; padding: 3px 9px; border-radius: 999px; align-self: start; text-align: center; }
.update-item .cat.design { background: rgba(140,124,240,0.14); color: var(--purple); }
.update-item .cat.ai { background: rgba(52,226,200,0.12); color: var(--cyan); }
.update-item .cat.device { background: rgba(255,122,61,0.12); color: var(--orange); }
.update-item .cat.career { background: rgba(99,224,138,0.12); color: var(--green); }
.update-item .cat.qa { background: rgba(239,90,111,0.12); color: var(--red); }
.update-item .cat.app { background: rgba(79,134,247,0.14); color: var(--blue); }
.update-item h4 { margin: 0 0 6px; font-size: 15.5px; color: var(--text); }
.update-item p { margin: 0 0 6px; font-size: 13.5px; color: var(--text-dim); }
.update-item .fixes { font-size: 12.5px; color: var(--text-mute); }

.assistant-box { border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); padding: 20px; }
.assistant-log { background: var(--bg-alt); border: 1px solid var(--border-soft); border-radius: 8px; padding: 14px; height: 320px; overflow-y: auto; font-size: 14px; margin-bottom: 12px; }
.assistant-log .msg { margin-bottom: 12px; }
.assistant-log .msg.user { color: var(--text); }
.assistant-log .msg.user .who { color: var(--orange); font-family: var(--mono); font-size: 11.5px; }
.assistant-log .msg.bot .who { color: var(--cyan); font-family: var(--mono); font-size: 11.5px; }
.assistant-log .msg.bot { color: var(--text-dim); }
.assistant-quick { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.assistant-quick button {
  font-family: var(--font); font-size: 13px; background: var(--panel-2); color: var(--text-dim);
  border: 1px solid var(--border); padding: 7px 12px; border-radius: 999px; cursor: pointer;
}
.assistant-quick button:hover { border-color: var(--cyan); color: var(--cyan); }
.assistant-input-row { display: flex; gap: 8px; }
.assistant-input-row input {
  flex: 1; background: var(--bg-alt); border: 1px solid var(--border); border-radius: 8px; color: var(--text);
  padding: 11px 14px; font-size: 14px; font-family: var(--font);
}
.assistant-input-row input:focus { outline: none; border-color: var(--cyan); }
.assistant-input-row button.send {
  background: linear-gradient(135deg, var(--cyan), var(--blue)); color: #061018; border: none; border-radius: 8px;
  padding: 0 20px; font-weight: 700; cursor: pointer; font-size: 14px;
}

@media (max-width: 720px) {
  .hero h1 { font-size: 25px; }
  .site-header .wrap { height: auto; flex-direction: column; align-items: flex-start; padding: 12px 20px; gap: 10px; }
  .main-nav { gap: 2px; }
  .main-nav a { padding: 6px 8px; font-size: 13.5px; }
  .footer-grid { grid-template-columns: 1fr; }
}