:root {
  --bg: #05070a;
  --panel: #0b1119;
  --panel-2: #101925;
  --line: #223246;
  --text: #eef7ff;
  --muted: #95a8bb;
  --cyan: #2bbcff;
  --purple: #b86cff;
  --green: #39df91;
  --orange: #ff9f32;
  --red: #ff5370;
  --shadow: 0 26px 80px rgba(0,0,0,.38);
  font-family: "Microsoft YaHei UI", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 12% -10%, rgba(43,188,255,.13), transparent 35%),
    radial-gradient(circle at 88% 8%, rgba(184,108,255,.11), transparent 30%),
    linear-gradient(rgba(39,62,84,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(39,62,84,.08) 1px, transparent 1px),
    var(--bg);
  background-size: auto, auto, 42px 42px, 42px 42px, auto;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { max-width: 100%; display: block; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  height: 72px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(121,164,202,.18);
  background: rgba(5,8,12,.88);
  backdrop-filter: blur(18px);
}

.topbar-inner {
  width: min(1440px, calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 12px;
  display: grid; place-items: center;
  color: #041019;
  background: linear-gradient(135deg, #70dcff, #4d7dff);
  box-shadow: 0 0 28px rgba(43,188,255,.35);
}
.brand small { display: block; color: var(--muted); font-size: 11px; letter-spacing: .12em; font-weight: 600; }
.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  padding: 9px 12px; border-radius: 10px; color: #b8c8d8; font-size: 14px;
}
.nav a:hover, .nav a:focus-visible { background: #131d29; color: white; outline: none; }

.page { width: min(1440px, calc(100% - 40px)); margin: 0 auto; }
.hero { padding: 70px 0 34px; display: grid; grid-template-columns: .86fr 1.14fr; gap: 54px; align-items: center; }
.eyebrow { color: var(--cyan); font-weight: 800; letter-spacing: .16em; font-size: 13px; text-transform: uppercase; }
.hero h1 { font-size: clamp(42px, 6vw, 82px); line-height: 1.04; letter-spacing: -.05em; margin: 13px 0 22px; }
.hero h1 span { color: transparent; background: linear-gradient(90deg, #f6fbff, #56c9ff 48%, #b58cff); background-clip: text; }
.hero p { margin: 0 0 26px; color: #b2c2d1; font-size: 18px; line-height: 1.85; max-width: 650px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 0 18px; border-radius: 12px; font-weight: 800;
  border: 1px solid #2b3c4f; background: #101925; color: #eaf6ff;
}
.button.primary { color: #061019; border-color: transparent; background: linear-gradient(135deg, #66d8ff, #6d87ff); box-shadow: 0 14px 36px rgba(43,188,255,.22); }
.button:hover { transform: translateY(-1px); }
.hero-poster { border: 1px solid rgba(85,166,224,.32); border-radius: 22px; overflow: hidden; box-shadow: var(--shadow), 0 0 50px rgba(43,188,255,.09); position: relative; }
.hero-poster::after { content: ""; position: absolute; inset: 0; box-shadow: inset 0 0 50px rgba(0,0,0,.25); pointer-events: none; }
.image-map { position: relative; }
.image-hotspots { position: absolute; inset: 0; z-index: 3; display: grid; }
.image-map-three .image-hotspots { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.image-map-four .image-hotspots {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  left: 1.8%; right: 1.8%; top: 29%; bottom: 9%;
}
.image-hotspots a {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 14px 8px;
  background: transparent;
  transition: background .18s ease, box-shadow .18s ease;
}
.image-hotspots a span {
  opacity: 0;
  transform: translateY(5px);
  padding: 7px 11px;
  border-radius: 999px;
  color: #fff;
  background: rgba(3,8,13,.88);
  border: 1px solid rgba(116,211,255,.65);
  font-size: 12px;
  font-weight: 800;
  box-shadow: 0 7px 24px rgba(0,0,0,.35);
  transition: opacity .18s ease, transform .18s ease;
  pointer-events: none;
}
.image-hotspots a:hover,
.image-hotspots a:focus-visible {
  outline: none;
  background: linear-gradient(to top, rgba(43,188,255,.16), rgba(43,188,255,.015) 58%, transparent);
  box-shadow: inset 0 0 0 2px rgba(83,199,255,.58);
}
.image-hotspots a:hover span,
.image-hotspots a:focus-visible span { opacity: 1; transform: translateY(0); }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 26px 0 80px; }
.stat { padding: 21px; border: 1px solid var(--line); border-radius: 16px; background: rgba(13,21,31,.86); }
.stat strong { display: block; font-size: 26px; color: white; }
.stat span { color: var(--muted); font-size: 13px; }

.section { padding: 34px 0 68px; }
.section-head { display: flex; justify-content: space-between; gap: 30px; align-items: end; margin-bottom: 25px; }
.section-head h2 { margin: 4px 0 0; font-size: clamp(28px, 4vw, 46px); letter-spacing: -.04em; }
.section-head p { color: var(--muted); max-width: 620px; line-height: 1.7; margin: 0; }

.category { --accent: var(--cyan); margin-bottom: 42px; border: 1px solid var(--line); border-radius: 24px; overflow: hidden; background: linear-gradient(145deg, rgba(15,24,35,.97), rgba(7,11,17,.97)); box-shadow: var(--shadow); }
.category-top { padding: 26px 28px 20px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); }
.category-title { display: flex; align-items: center; gap: 14px; }
.category-icon { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 13px; color: #041017; background: var(--accent); font-weight: 900; box-shadow: 0 0 28px color-mix(in srgb, var(--accent) 35%, transparent); }
.category-title h3 { margin: 0; font-size: 25px; }
.category-title p { margin: 4px 0 0; color: var(--muted); }
.category-grid { display: grid; grid-template-columns: .9fr 1.1fr; }
.category-poster { min-height: 280px; background: #020305; border-right: 1px solid var(--line); overflow: hidden; }
.category-poster img { width: 100%; height: 100%; object-fit: cover; }
.indicator-list { padding: 20px; display: grid; gap: 13px; align-content: center; }
.indicator-card { display: grid; grid-template-columns: 48px 1fr auto; gap: 14px; align-items: center; padding: 17px; border: 1px solid #243548; border-radius: 14px; background: rgba(13,22,33,.92); transition: .2s ease; }
.indicator-card:hover { border-color: var(--accent); transform: translateX(4px); background: #111d2a; }
.indicator-number { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 12px; color: var(--accent); background: color-mix(in srgb, var(--accent) 13%, transparent); font-weight: 900; }
.indicator-card strong { display: block; font-size: 17px; }
.indicator-card small { display: block; color: var(--muted); margin-top: 4px; line-height: 1.5; }
.indicator-arrow { color: var(--accent); font-size: 22px; }

.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.guide-card { padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: rgba(12,19,28,.88); }
.guide-card b { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; background: #163049; color: #75d7ff; margin-bottom: 18px; }
.guide-card h3 { margin: 0 0 8px; }
.guide-card p { color: var(--muted); line-height: 1.7; margin: 0; }

.notice { margin: 0 0 76px; display: grid; grid-template-columns: 1.1fr .9fr; gap: 20px; }
.notice-card { padding: 27px; border: 1px solid var(--line); border-radius: 20px; background: linear-gradient(145deg, #101a27, #0a1018); }
.notice-card h3 { margin-top: 0; }
.notice-card ul { padding-left: 20px; color: #b7c7d6; line-height: 1.9; }
.code-line { padding: 14px 16px; border-radius: 12px; background: #05090d; border: 1px solid #26384b; color: #90ddff; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; overflow-wrap: anywhere; }

.detail-shell { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 34px; padding: 34px 0 80px; }
.sidebar { position: sticky; top: 94px; align-self: start; max-height: calc(100vh - 120px); overflow: auto; border: 1px solid var(--line); border-radius: 18px; background: rgba(10,16,24,.95); padding: 14px; }
.side-home { display: block; padding: 13px; border-radius: 11px; background: #142235; color: #83d9ff; font-weight: 800; margin-bottom: 14px; }
.side-group { margin: 17px 0 8px; padding: 0 10px; color: var(--accent, #7dd9ff); font-size: 12px; font-weight: 900; letter-spacing: .08em; }
.side-link { display: block; padding: 10px 12px; border-radius: 10px; color: #9fb0c1; font-size: 14px; }
.side-link:hover, .side-link.active { background: #182537; color: white; }
.detail-main { min-width: 0; }
.detail-hero { --accent: var(--cyan); display: grid; grid-template-columns: .82fr 1.18fr; gap: 28px; align-items: stretch; }
.detail-copy { border: 1px solid var(--line); border-radius: 22px; padding: 32px; background: linear-gradient(145deg, #111b28, #080d13); }
.crumbs { color: var(--muted); font-size: 13px; }
.detail-copy h1 { font-size: clamp(38px, 5vw, 64px); margin: 22px 0 8px; letter-spacing: -.05em; color: var(--accent); }
.detail-copy .badge { display: inline-flex; padding: 7px 11px; border: 1px solid color-mix(in srgb, var(--accent) 60%, #243548); border-radius: 999px; color: var(--accent); font-size: 12px; font-weight: 900; }
.detail-copy p { color: #b9c8d6; line-height: 1.85; font-size: 16px; }
.tag-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 20px; }
.tag { padding: 7px 10px; border-radius: 9px; color: #bbcada; background: #131f2c; border: 1px solid #24364a; font-size: 12px; }

.demo-card { border: 1px solid color-mix(in srgb, var(--accent) 55%, #243548); border-radius: 22px; background: #030609; overflow: hidden; min-height: 430px; box-shadow: 0 0 44px color-mix(in srgb, var(--accent) 12%, transparent); }
.demo-head { height: 54px; display: flex; align-items: center; justify-content: space-between; padding: 0 17px; border-bottom: 1px solid #1c2b3a; background: #09111a; }
.demo-head span { color: var(--accent); font-weight: 800; }
.demo-toggle { color: #a9bdcf; background: #121e2a; border: 1px solid #2a4054; border-radius: 9px; padding: 7px 11px; cursor: pointer; }
.demo-toggle:hover { color: white; }
.chart-wrap { position: relative; height: 374px; }
.chart-wrap canvas { width: 100%; height: 100%; display: block; }
.chart-legend { position: absolute; left: 13px; bottom: 12px; padding: 8px 10px; border-radius: 9px; background: rgba(3,7,10,.82); border: 1px solid #233548; color: #9eb3c5; font-size: 11px; }

.content-section { margin-top: 28px; border: 1px solid var(--line); border-radius: 20px; background: rgba(10,16,24,.92); overflow: hidden; }
.content-title { padding: 20px 24px; border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 12px; }
.content-title i { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; font-style: normal; background: color-mix(in srgb, var(--accent) 14%, #101925); color: var(--accent); }
.content-title h2 { margin: 0; font-size: 21px; }
.content-body { padding: 24px; }
.formula { display: grid; gap: 10px; }
.formula-line { padding: 14px 16px; border-left: 3px solid var(--accent); border-radius: 0 10px 10px 0; background: #070c12; color: #d3e4f2; line-height: 1.65; font-family: ui-monospace, "Microsoft YaHei UI", monospace; }
.two-col { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.info-card { padding: 17px; border-radius: 14px; border: 1px solid #223448; background: #0d1621; }
.info-card h3 { margin: 0 0 7px; color: white; font-size: 16px; }
.info-card p { margin: 0; color: var(--muted); line-height: 1.7; font-size: 14px; }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step { position: relative; padding: 18px 18px 18px 64px; border: 1px solid #223448; background: #0c151f; border-radius: 14px; }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 18px; top: 18px; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: var(--accent); color: #051018; font-weight: 900; }
.step h3 { margin: 0 0 5px; font-size: 15px; }
.step p { margin: 0; color: var(--muted); line-height: 1.65; font-size: 14px; }
.param-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.param-table th, .param-table td { padding: 14px; text-align: left; vertical-align: top; border-bottom: 1px solid #203044; }
.param-table th { color: #8298ab; font-size: 12px; }
.param-table td:nth-child(2) { color: var(--accent); font-weight: 800; white-space: nowrap; }
.warning-list { margin: 0; padding-left: 20px; color: #b8c7d4; line-height: 1.9; }
.combo { padding: 20px; border: 1px solid color-mix(in srgb, var(--accent) 45%, #263548); border-radius: 14px; background: color-mix(in srgb, var(--accent) 8%, #0a1119); color: #d9edf8; line-height: 1.7; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 28px; }
.pager a { border: 1px solid var(--line); border-radius: 14px; padding: 17px; background: #0d151f; color: var(--muted); }
.pager a:last-child { text-align: right; }
.pager strong { color: white; display: block; margin-top: 5px; }

.footer { border-top: 1px solid var(--line); color: var(--muted); padding: 28px 0 44px; font-size: 13px; }
.footer-inner { width: min(1440px, calc(100% - 40px)); margin: 0 auto; display: flex; justify-content: space-between; gap: 20px; }

@media (max-width: 1050px) {
  .hero, .detail-hero, .notice { grid-template-columns: 1fr; }
  .detail-shell { grid-template-columns: 1fr; }
  .sidebar { position: static; max-height: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 5px; }
  .side-home { grid-column: 1 / -1; margin: 0; }
  .side-group { grid-column: 1 / -1; margin-bottom: 0; }
  .category-grid { grid-template-columns: 1fr; }
  .category-poster { border-right: 0; border-bottom: 1px solid var(--line); }
}

@media (max-width: 760px) {
  .topbar { height: auto; min-height: 64px; }
  .topbar-inner { width: min(100% - 24px, 1440px); }
  .nav { display: none; }
  .page { width: min(100% - 24px, 1440px); }
  .hero { padding-top: 42px; gap: 30px; }
  .stats, .guide-grid, .two-col { grid-template-columns: 1fr; }
  .stats { margin-bottom: 45px; }
  .section-head, .category-top { align-items: start; flex-direction: column; }
  .category-top { padding: 21px; }
  .indicator-card { grid-template-columns: 42px 1fr; }
  .indicator-arrow { display: none; }
  .detail-shell { padding-top: 18px; }
  .sidebar { grid-template-columns: repeat(2, 1fr); }
  .detail-copy { padding: 24px; }
  .chart-wrap { height: 310px; }
  .content-body { padding: 17px; }
  .param-table, .param-table tbody, .param-table tr, .param-table td { display: block; width: 100%; }
  .param-table thead { display: none; }
  .param-table tr { padding: 10px 0; border-bottom: 1px solid #203044; }
  .param-table td { border: 0; padding: 5px 0; white-space: normal !important; }
  .pager { grid-template-columns: 1fr; }
  .pager a:last-child { text-align: left; }
  .footer-inner { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

.overview-current{padding:32px;border:1px solid #294255;border-radius:24px;background:linear-gradient(135deg,#0c2230,#111321)}.overview-current h2{font-size:clamp(24px,3vw,42px)}.overview-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.overview-grid a{display:grid;gap:10px;padding:20px;border:1px solid var(--accent);border-radius:12px;color:inherit;text-decoration:none}.overview-grid strong{color:var(--accent);font-size:22px}.overview-grid a:hover{background:#ffffff10}.overview-current p{font-size:16px;color:#a9bac9}@media(max-width:420px){.overview-grid{grid-template-columns:1fr}}