:root {
  --bg: #07111f;
  --panel: #0d1d31;
  --panel-soft: #10253e;
  --line: rgba(70, 191, 255, 0.28);
  --text: #eef7ff;
  --muted: #9db7c9;
  --cyan: #25c8ff;
  --blue: #327cff;
  --red: #e43535;
  --gold: #f7c85a;
  --white: #ffffff;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.36);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 10%, rgba(37, 200, 255, 0.18), transparent 30%),
    radial-gradient(circle at 86% 8%, rgba(228, 53, 53, 0.18), transparent 28%),
    linear-gradient(180deg, #040914 0%, var(--bg) 46%, #050b13 100%);
  line-height: 1.75;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(106, 191, 255, 0.18);
  background: rgba(5, 11, 20, 0.84);
  backdrop-filter: blur(18px);
}

.nav {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(37, 200, 255, 0.76);
  border-radius: 10px;
  background:
    linear-gradient(135deg, rgba(37, 200, 255, 0.22), rgba(50, 124, 255, 0.1)),
    radial-gradient(circle, rgba(37, 200, 255, 0.42), transparent 56%);
  box-shadow: 0 0 28px rgba(37, 200, 255, 0.24);
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(255, 255, 255, 0.58);
  transform: rotate(45deg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 15px;
}

.nav-links a:hover {
  color: var(--white);
}

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 6px;
  border: 1px solid rgba(37, 200, 255, 0.46);
  background: linear-gradient(135deg, rgba(37, 200, 255, 0.18), rgba(50, 124, 255, 0.26));
  color: #effbff;
  font-weight: 700;
  box-shadow: 0 0 24px rgba(37, 200, 255, 0.14);
}

.nav-cta {
  border-color: rgba(228, 53, 53, 0.72);
  background: linear-gradient(135deg, #f04444, #9c171c);
  color: #fff;
  box-shadow: 0 12px 34px rgba(228, 53, 53, 0.24);
}

.button.primary {
  border-color: rgba(228, 53, 53, 0.72);
  background: linear-gradient(135deg, #e43535, #921b1f);
  box-shadow: 0 18px 44px rgba(228, 53, 53, 0.22);
}

.button.primary.button-large {
  min-height: 58px;
  padding: 0 28px;
  font-size: 19px;
  border-color: rgba(255, 120, 120, 0.82);
  background: linear-gradient(135deg, #ff4242 0%, #d71920 46%, #7f1014 100%);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08) inset, 0 22px 56px rgba(228, 53, 53, 0.32);
}

.button.ghost {
  background: rgba(13, 29, 49, 0.76);
}

.hero {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 76px 0 54px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 42px;
  align-items: center;
}

.eyebrow {
  color: var(--cyan);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 13px;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.2;
}

h1 {
  margin-top: 12px;
  font-size: clamp(36px, 6vw, 72px);
  letter-spacing: 0;
}

.hero p {
  max-width: 680px;
  color: #c8d8e6;
  font-size: 18px;
  margin: 20px 0 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.system-entry {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 620px;
}

.entry-point {
  border: 1px solid rgba(37, 200, 255, 0.22);
  background: rgba(13, 29, 49, 0.68);
  padding: 12px;
  border-radius: 8px;
}

.entry-point strong {
  display: block;
  color: #fff;
  font-size: 16px;
}

.entry-point span {
  color: var(--muted);
  font-size: 13px;
}

.hero-panel {
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(16, 37, 62, 0.92), rgba(7, 17, 31, 0.76)),
    repeating-linear-gradient(90deg, transparent 0 78px, rgba(37, 200, 255, 0.06) 79px, transparent 80px);
  box-shadow: var(--shadow);
  border-radius: 10px;
  padding: 24px;
  overflow: hidden;
}

.chart-shell {
  min-height: 330px;
  position: relative;
  border: 1px solid rgba(37, 200, 255, 0.24);
  background:
    linear-gradient(180deg, rgba(37, 200, 255, 0.08), rgba(228, 53, 53, 0.06)),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: auto, 64px 64px, 64px 64px;
}

.chart-line {
  position: absolute;
  inset: 44px 28px 76px;
  clip-path: polygon(0 78%, 10% 64%, 18% 68%, 28% 45%, 37% 52%, 46% 34%, 56% 40%, 67% 23%, 78% 27%, 88% 15%, 100% 6%, 100% 100%, 0 100%);
  background: linear-gradient(180deg, rgba(228, 53, 53, 0.92), rgba(228, 53, 53, 0.08));
  border-top: 3px solid #ff4a4a;
}

.chart-arrow {
  position: absolute;
  right: 26px;
  top: 28px;
  width: 120px;
  height: 120px;
  border-top: 9px solid var(--cyan);
  border-right: 9px solid var(--cyan);
  transform: rotate(18deg);
  filter: drop-shadow(0 0 16px rgba(37, 200, 255, 0.45));
}

.metric-row {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 18px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.metric {
  padding: 12px;
  border: 1px solid rgba(37, 200, 255, 0.25);
  background: rgba(3, 10, 19, 0.64);
}

.metric strong {
  display: block;
  color: var(--red);
  font-size: 24px;
}

.metric span {
  color: var(--muted);
  font-size: 13px;
}

.section {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 54px 0;
}

.conversion-band {
  width: min(1180px, calc(100% - 32px));
  margin: 16px auto 0;
  padding: 28px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: center;
  border: 1px solid rgba(228, 53, 53, 0.38);
  border-radius: 10px;
  background:
    linear-gradient(135deg, rgba(228, 53, 53, 0.22), rgba(37, 200, 255, 0.1)),
    rgba(8, 18, 31, 0.88);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.3);
}

.conversion-band h2 {
  font-size: clamp(24px, 3vw, 34px);
}

.conversion-band p {
  margin: 8px 0 0;
  color: #c8d8e6;
}

.floating-entry {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 30;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid rgba(255, 132, 132, 0.78);
  background: linear-gradient(135deg, #ff4444, #b8141a);
  color: #fff;
  font-weight: 800;
  box-shadow: 0 16px 44px rgba(228, 53, 53, 0.36), 0 0 0 6px rgba(228, 53, 53, 0.1);
}

.section-title {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 18px;
  margin-bottom: 24px;
}

.section-title p {
  color: var(--muted);
  margin: 8px 0 0;
}

.grid {
  display: grid;
  gap: 18px;
}

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

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

.card,
.article-card,
.content-panel {
  border: 1px solid rgba(37, 200, 255, 0.22);
  background: linear-gradient(180deg, rgba(13, 29, 49, 0.82), rgba(7, 17, 31, 0.74));
  border-radius: 8px;
  padding: 24px;
}

.card h3,
.article-card h3 {
  font-size: 21px;
}

.card p,
.article-card p,
.content-panel p,
.content-panel li {
  color: #bed1df;
}

.article-card {
  display: block;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border: 1px solid rgba(37, 200, 255, 0.28);
  color: var(--cyan);
  background: rgba(37, 200, 255, 0.08);
  font-size: 13px;
  margin-bottom: 14px;
}

.page-hero {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
  padding: 70px 0 34px;
}

.page-hero h1 {
  font-size: clamp(32px, 5vw, 54px);
}

.page-hero p {
  color: #c6d6e3;
  font-size: 18px;
}

.article-layout {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0 70px;
}

.article-layout h2 {
  margin-top: 34px;
  font-size: 28px;
}

.article-layout h3 {
  margin-top: 26px;
}

.article-layout p,
.article-layout li {
  color: #c8d8e6;
}

.notice {
  border-left: 4px solid var(--gold);
  background: rgba(247, 200, 90, 0.08);
  padding: 16px 18px;
  color: #f3dfaa;
}

.footer {
  border-top: 1px solid rgba(106, 191, 255, 0.18);
  padding: 34px 0;
  color: var(--muted);
  background: rgba(4, 9, 20, 0.72);
}

.footer-inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.beian {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  font-size: 14px;
}

.beian img {
  width: 18px;
  height: 18px;
  vertical-align: middle;
}

.breadcrumb {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 18px;
}

.table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
}

.table th,
.table td {
  border: 1px solid rgba(37, 200, 255, 0.2);
  padding: 12px;
  text-align: left;
}

.table th {
  background: rgba(37, 200, 255, 0.1);
}

@media (max-width: 860px) {
  .nav {
    align-items: flex-start;
    padding: 14px 0;
  }

  .nav-links {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 46px;
  }

  .system-entry,
  .conversion-band {
    grid-template-columns: 1fr;
  }

  .floating-entry {
    left: 16px;
    right: 16px;
    bottom: 14px;
    min-height: 52px;
  }

  .grid.cols-3,
  .grid.cols-2 {
    grid-template-columns: 1fr;
  }

  .section-title {
    display: block;
  }

  .metric-row {
    grid-template-columns: 1fr;
  }

  .chart-shell {
    min-height: 420px;
  }

  .footer {
    padding-bottom: 86px;
  }
}