:root {
  /* 配色（对齐画板 313:1） */
  --bg: #13161B;
  --dash-bg: #151821;
  --card: rgba(255, 255, 255, 0.035);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-border-strong: rgba(255, 255, 255, 0.12);
  --white-5: rgba(255, 255, 255, 0.05);
  --purple: #A78BFA;
  --purple-deep: #8B7DDD;
  --purple-light: #C4B5FD;
  --purple-grad: linear-gradient(135deg, #8B7DDD 0%, #A78BFA 100%);
  --purple-soft: rgba(167, 139, 250, 0.14);
  --purple-soft-border: rgba(167, 139, 250, 0.30);
  --purple-soft-border2: rgba(167, 139, 250, 0.35);
  --text: #FFFFFF;
  --text-dim: #9CA3AF;
  --text-mute: #6B7280;
  --green: #34D399;

  /* 字体 */
  --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Noto Sans SC', ui-monospace, Menlo, Consolas, monospace;
  --font-zh: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

/* ===== 滚动入场动画 ===== */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity .7s cubic-bezier(.22, .61, .36, 1),
              transform .7s cubic-bezier(.22, .61, .36, 1);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

body {
  font-family: var(--font-sans);
  background:
    radial-gradient(620px circle at -200px -160px, rgba(167, 139, 250, 0.15), transparent 70%),
    radial-gradient(560px circle at calc(100% - 360px) 520px, rgba(52, 211, 153, 0.10), transparent 70%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap { max-width: 1320px; margin: 0 auto; padding: 0 60px; }

/* ===== 导航 ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(19, 22, 27, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.nav__inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 16px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand__logo { display: block; }
.brand__name { font-size: 20px; font-weight: 700; color: var(--text); letter-spacing: -0.01em; }

.nav__links { display: flex; align-items: center; gap: 36px; }
.nav__links a {
  font-size: 15px;
  color: var(--text);
  text-decoration: none;
  transition: color .2s ease;
}
.nav__links a:hover { color: var(--text); }
.nav__links a:first-child { color: var(--text); }

.nav__cta {
  height: 40px;
  padding: 0 22px;
  border-radius: 20px;
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  display: inline-flex;
  align-items: center;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: var(--white-5);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav__toggle span { width: 18px; height: 2px; background: var(--text); border-radius: 2px; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
  transition: transform .15s ease, opacity .2s ease;
}
.btn--primary {
  height: 52px;
  padding: 0 28px;
  border-radius: 14px;
  background: var(--purple-grad);
  color: #ffffff;
  font-size: 16px;
  border: none;
}
.btn--ghost {
  height: 52px;
  padding: 0 28px;
  border-radius: 14px;
  background: var(--white-5);
  border: 1px solid var(--card-border-strong);
  color: var(--text);
  font-size: 16px;
}
.btn:hover { opacity: .92; }

/* ===== Hero ===== */
.hero { padding: 130px 0 120px; }
.hero__inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 28px;
}
.badge {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--purple-soft);
  border: 1px solid var(--purple-soft-border2);
  font-family: var(--font-zh);
  font-size: 13px;
  font-weight: 500;
  color: var(--purple-light);
}
.hero__title {
  font-family: var(--font-zh);
  font-size: 60px;
  line-height: 68px;
  font-weight: 700;
  color: var(--text);
  max-width: 1000px;
}
.hero__sub {
  font-family: var(--font-zh);
  font-size: 18px;
  line-height: 28px;
  color: var(--text-dim);
  max-width: 760px;
}
.hero__cta { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }

/* ===== 仪表盘预览 ===== */
.dash {
  width: 100%;
  max-width: 1100px;
  margin: 12px auto 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 24px 28px;
  border-radius: 20px;
  background: var(--dash-bg);
  border: 1px solid var(--card-border);
}
.dash__top { display: flex; align-items: center; justify-content: space-between; }
.dash__brand { display: flex; align-items: center; gap: 12px; }
.dash__logo { display: block; }
.dash__brandtext { display: flex; flex-direction: column; gap: 2px; text-align: left; }
.dash__name { font-family: var(--font-sans); font-size: 18px; font-weight: 600; color: var(--text); }
.dash__sub { font-family: var(--font-zh); font-size: 11px; color: var(--text-dim); }
.dash__actions { display: flex; gap: 8px; }
.iconbtn {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 13px;
  background: var(--white-5);
  border: 1px solid var(--card-border);
}

.dash__stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px;
  border-radius: 14px;
  background: var(--white-5);
  border: 1px solid var(--card-border);
  text-align: left;
}
.stat__label { font-family: var(--font-zh); font-size: 11px; color: var(--text-dim); }
.stat__value { font-family: var(--font-mono); font-size: 20px; font-weight: 700; color: var(--text); font-feature-settings: 'tnum' 1; }
.stat__value--up { color: var(--green); }

.chart {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px 18px;
  border-radius: 14px;
  background: var(--white-5);
  border: 1px solid var(--card-border);
}
.chart__label { font-family: var(--font-zh); font-size: 11px; color: var(--text-dim); }
.chart__svg { width: 100%; height: 120px; display: block; }

/* ===== 区块通用标题 ===== */
.section__head { display: flex; flex-direction: column; gap: 14px; }
.section__head--center { align-items: center; text-align: center; }
.section__title {
  font-family: var(--font-zh);
  font-size: 42px;
  line-height: 48px;
  font-weight: 700;
  color: var(--text);
}
.section__sub {
  font-family: var(--font-zh);
  font-size: 17px;
  line-height: 26px;
  color: var(--text-dim);
  max-width: 820px;
}

/* ===== 产品 ===== */
.products { padding: 120px 0; }
.products__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-top: 44px; }
.pcard {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 32px;
  border-radius: 20px;
  background: var(--card);
  border: 1px solid var(--card-border);
}
.pcard__badge {
  align-self: flex-start;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--purple-soft);
  border: 1px solid var(--purple-soft-border);
  font-family: var(--font-zh);
  font-size: 12px;
  font-weight: 600;
  color: var(--purple-light);
}
.pcard__title { font-family: var(--font-zh); font-size: 32px; font-weight: 600; color: var(--text); }
.pcard__title--en { font-family: var(--font-sans); font-weight: 700; }
.pcard__desc { font-family: var(--font-zh); font-size: 15px; line-height: 24px; color: var(--text-dim); }
.pcard__tags { display: flex; flex-wrap: wrap; gap: 10px; }
.pill {
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--white-5);
  border: 1px solid var(--card-border);
  font-family: var(--font-zh);
  font-size: 13px;
  color: var(--text);
}
.pcard__cta {
  margin-top: auto;
  font-family: var(--font-zh);
  font-size: 15px;
  font-weight: 600;
  color: var(--purple);
  text-decoration: none;
}

/* ===== 基础设施 ===== */
.infra { padding: 120px 0; }
.infra__stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 48px; }
.infra__stat { display: flex; flex-direction: column; gap: 8px; }
.infra__num { font-family: var(--font-zh); font-size: 52px; font-weight: 700; color: var(--purple); line-height: 1.1; }
.infra__num--en { font-family: var(--font-sans); }
.infra__label { font-family: var(--font-zh); font-size: 14px; color: var(--text-dim); }
.infra__label--strong { font-weight: 600; }

/* ===== 团队 ===== */
.team { padding: 120px 0; }
.group__label {
  font-family: var(--font-zh);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-mute);
  margin-top: 40px;
  margin-bottom: 20px;
}
.team__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.member {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--card-border);
  margin: 0;
}
.member--advisor { gap: 10px; }
.member__avatar { width: 56px; height: 56px; border-radius: 28px; object-fit: cover; display: block; }
.member figcaption { display: flex; flex-direction: column; gap: 4px; text-align: left; }
.member__name { font-family: var(--font-sans); font-size: 18px; font-weight: 600; color: var(--text); }
.member--advisor .member__name { font-size: 17px; }
.member__role { font-family: var(--font-zh); font-size: 14px; color: var(--text-dim); }
.member--advisor .member__role { font-size: 13px; }
.member__org { font-family: var(--font-sans); font-size: 12px; color: var(--text-mute); }

/* ===== 页脚 ===== */
.footer { padding: 60px 0; }
.footer__divider { width: 100%; height: 1px; background: rgba(255, 255, 255, 0.06); margin-bottom: 32px; }
.footer__body { display: flex; justify-content: space-between; align-items: flex-start; gap: 40px; }
.footer__brand { display: flex; flex-direction: column; gap: 14px; }
.footer__tag { font-family: var(--font-zh); font-size: 14px; color: var(--text-dim); }
.footer__cols { display: flex; gap: 72px; }
.footer__col { display: flex; flex-direction: column; gap: 12px; }
.footer__col h4 { font-family: var(--font-zh); font-size: 14px; font-weight: 600; color: var(--text); }
.footer__col a { font-family: var(--font-zh); font-size: 14px; color: var(--text-dim); text-decoration: none; }
.footer__col a:hover { color: var(--text); }
.footer__bottom { margin-top: 32px; }
.footer__bottom span { font-family: var(--font-zh); font-size: 13px; color: var(--text-mute); }

/* ===== 科技感交互 ===== */
/* 背景网格 + 缓慢漂浮光晕 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 50px 50px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% -10%, #000 0%, transparent 75%);
          mask-image: radial-gradient(ellipse 80% 60% at 50% -10%, #000 0%, transparent 75%);
}
body::after {
  content: '';
  position: fixed;
  width: 760px;
  height: 760px;
  top: 8%;
  left: 4%;
  z-index: -1;
  pointer-events: none;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(167, 139, 250, 0.09), transparent 62%);
  filter: blur(20px);
  animation: bgFloat 20s ease-in-out infinite alternate;
}
@keyframes bgFloat {
  from { transform: translate(0, 0); }
  to   { transform: translate(140px, -70px); }
}

/* 卡片 hover：仅轻微上浮与描边提亮 */
.pcard, .member, .stat, .infra__stat {
  transition: transform .35s cubic-bezier(.22, .61, .36, 1), border-color .35s ease, box-shadow .35s ease;
}
.pcard:hover, .member:hover, .stat:hover, .infra__stat:hover {
  transform: translateY(-4px);
  border-color: var(--purple-soft-border);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

/* 成员头像 hover 放大 */
.member__avatar { transition: transform .35s ease; }
.member:hover .member__avatar { transform: scale(1.06); }

/* 按钮扫光 */
.btn { position: relative; overflow: hidden; }
.btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -60%;
  width: 45%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-20deg);
  transition: left .6s ease;
  pointer-events: none;
}
.btn:hover::after { left: 130%; }

/* 导航滚动强化 */
.nav { transition: background .3s ease, border-color .3s ease, box-shadow .3s ease; }
.nav.is-scrolled {
  background: rgba(19, 22, 27, 0.92);
  border-bottom-color: rgba(167, 139, 250, 0.22);
  box-shadow: 0 1px 0 rgba(167, 139, 250, 0.10), 0 8px 30px rgba(0, 0, 0, 0.25);
}

@media (prefers-reduced-motion: reduce) {
  body::after { animation: none; }
  .pcard, .member, .stat, .infra__stat { transition: border-color .2s ease; }
  .pcard:hover, .member:hover, .stat:hover, .infra__stat:hover { transform: none; }
  .btn::after { display: none; }
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .wrap, .nav__inner, .hero__inner { padding-left: 40px; padding-right: 40px; }
  .hero__title { font-size: 48px; line-height: 56px; }
  .section__title { font-size: 36px; line-height: 42px; }
  .infra__num { font-size: 44px; }
}

@media (max-width: 768px) {
  .nav__links {
    position: absolute;
    top: 72px;
    left: 20px;
    right: 20px;
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    padding: 20px;
    border-radius: 16px;
    background: rgba(21, 24, 33, 0.96);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(14px);
    display: none;
  }
  .nav__links.is-open { display: flex; }
  .nav__cta { justify-content: center; }
  .nav__toggle { display: flex; }

  .hero { padding: 80px 0 80px; }
  .hero__inner { padding-left: 24px; padding-right: 24px; }
  .hero__title { font-size: 36px; line-height: 44px; }
  .hero__sub { font-size: 16px; }
  .dash { padding: 20px; }
  .dash__stats { grid-template-columns: repeat(2, 1fr); }

  .products { padding: 80px 0; }
  .products__grid { grid-template-columns: 1fr; gap: 20px; margin-top: 32px; }
  .pcard { padding: 24px; }

  .infra { padding: 80px 0; }
  .infra__stats { grid-template-columns: 1fr; gap: 28px; text-align: center; align-items: center; }
  .infra__stat { align-items: center; }

  .team { padding: 80px 0; }
  .team__grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

  .footer__body { flex-direction: column; gap: 32px; }
  .footer__cols { gap: 40px; flex-wrap: wrap; }
}

@media (max-width: 480px) {
  .wrap, .nav__inner { padding-left: 20px; padding-right: 20px; }
  .hero__title { font-size: 30px; line-height: 38px; }
  .dash__stats { grid-template-columns: 1fr; }
  .team__grid { grid-template-columns: 1fr; }
  .infra__num { font-size: 40px; }
}