/* ===== 昇色投资 · 基础与变量（方案二：科技蓝 + 青色渐变） ===== */
:root {
  --primary: #2563EB;
  --secondary: #06B6D4;
  --bg: #F8FAFC;
  --surface: #FFFFFF;
  --text: #0F172A;
  --text-secondary: #475569;
  --border: #E2E8F0;
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --gradient: linear-gradient(135deg, #2563EB, #06B6D4);
  --gradient-soft: linear-gradient(135deg, rgba(37, 99, 235, .10), rgba(6, 182, 212, .10));
  --primary-soft: rgba(37, 99, 235, .08);
  --secondary-soft: rgba(6, 182, 212, .10);
  --shadow-sm: 0 2px 10px rgba(15, 23, 42, .05);
  --shadow-md: 0 12px 34px rgba(37, 99, 235, .12);
  --shadow-lg: 0 20px 50px rgba(37, 99, 235, .18);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(37, 99, 235, .18); color: var(--text); }

.container { width: min(1200px, 92%); margin: 0 auto; }

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

.gold {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: all .35s ease;
  background: transparent;
}
.site-header.scrolled {
  padding: 10px 0;
  background: rgba(248, 250, 252, .92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  font-size: 22px; font-weight: 700;
  color: #fff;
  background: var(--gradient);
  border-radius: 10px;
  box-shadow: 0 4px 16px rgba(37, 99, 235, .3);
}
.brand-text { font-size: 19px; font-weight: 700; letter-spacing: 1px; color: var(--text); line-height: 1.2; }
.brand-text em { display: block; font-style: normal; font-size: 10px; font-weight: 400; letter-spacing: 3px; color: var(--text-secondary); }

.main-nav { display: flex; align-items: center; gap: 30px; }
.main-nav a {
  font-size: 15px;
  color: var(--text-secondary);
  position: relative;
  transition: color .25s;
  padding: 4px 0;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--gradient);
  transition: width .3s ease;
}
.main-nav a:hover { color: var(--primary); }
.main-nav a:hover::after { width: 100%; }
.main-nav a.nav-cta {
  color: #fff;
  font-weight: 600;
  background: var(--gradient);
  padding: 8px 20px;
  border-radius: 22px;
  transition: transform .25s, box-shadow .25s;
}
.main-nav a.nav-cta::after { display: none; }
.main-nav a.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(37, 99, 235, .35); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 26px; height: 2px; background: var(--text); border-radius: 2px; transition: all .3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background:
    radial-gradient(ellipse at 15% 18%, rgba(37, 99, 235, .14), transparent 55%),
    radial-gradient(ellipse at 85% 78%, rgba(6, 182, 212, .14), transparent 55%),
    radial-gradient(ellipse at 55% 45%, rgba(37, 99, 235, .05), transparent 60%),
    var(--bg);
  overflow: hidden;
}
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(248,250,252,.35) 0%, rgba(248,250,252,.65) 100%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 2; text-align: center; padding: 120px 0 90px; }

.hero-eyebrow {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 6px;
  color: var(--primary);
  border: 1px solid rgba(37, 99, 235, .35);
  border-radius: 20px;
  padding: 6px 22px;
  margin-bottom: 30px;
  background: rgba(255, 255, 255, .6);
}
.hero-title {
  font-size: clamp(56px, 9vw, 104px);
  font-weight: 800;
  letter-spacing: 10px;
  color: var(--text);
  line-height: 1.15;
  margin-bottom: 14px;
}
.hero-title {
  background: linear-gradient(135deg, #0F172A 20%, #2563EB 55%, #06B6D4 90%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero-slogan {
  font-size: clamp(20px, 3.2vw, 30px);
  font-weight: 500;
  letter-spacing: 3px;
  color: var(--text);
  margin-bottom: 20px;
}
.hero-sub { font-size: 16px; color: var(--text-secondary); letter-spacing: 1px; margin-bottom: 48px; }

.hero-entries {
  display: flex;
  justify-content: center;
  gap: 22px;
  flex-wrap: wrap;
}
.entry-card {
  width: 200px;
  padding: 26px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: transform .3s, border-color .3s, box-shadow .3s;
}
.entry-card:hover {
  transform: translateY(-8px);
  border-color: rgba(37, 99, 235, .4);
  box-shadow: var(--shadow-md);
}
.entry-icon { font-size: 30px; color: var(--primary); }
.entry-name { font-size: 18px; font-weight: 700; color: var(--text); letter-spacing: 2px; }
.entry-desc { font-size: 13px; color: var(--text-secondary); }

.hero-scroll {
  position: absolute;
  left: 50%; bottom: 34px;
  transform: translateX(-50%);
  width: 26px; height: 44px;
  border: 2px solid rgba(71, 85, 105, .4);
  border-radius: 14px;
  z-index: 2;
}
.hero-scroll span {
  position: absolute;
  left: 50%; top: 8px;
  width: 4px; height: 10px;
  margin-left: -2px;
  background: var(--primary);
  border-radius: 2px;
  animation: scrollHint 1.8s ease-in-out infinite;
}
@keyframes scrollHint {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(14px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ===== 通用区块 ===== */
.section { position: relative; padding: 110px 0; }

.section-head { text-align: center; margin-bottom: 64px; }
.section-kicker {
  font-size: 13px;
  letter-spacing: 5px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 12px;
  font-weight: 600;
}
.section-title {
  font-size: clamp(30px, 4.5vw, 44px);
  font-weight: 700;
  color: var(--text);
  letter-spacing: 3px;
  margin-bottom: 18px;
}
.section-line { width: 72px; height: 3px; margin: 0 auto; background: var(--border); border-radius: 2px; position: relative; }
.section-line span {
  position: absolute; inset: 0;
  width: 0;
  background: var(--gradient);
  border-radius: 2px;
  animation: lineGrow 2s ease forwards;
  animation-delay: .4s;
}
@keyframes lineGrow { to { width: 100%; } }
.section-desc { margin-top: 22px; color: var(--text-secondary); font-size: 16px; letter-spacing: 1px; }

/* ===== 关于昇色 ===== */
.about { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.about-lead {
  max-width: 860px;
  margin: 0 auto 60px;
  text-align: center;
  font-size: 17px;
  color: var(--text);
  letter-spacing: 1px;
}
.about-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.about-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 34px 28px;
  transition: transform .3s, border-color .3s, box-shadow .3s;
}
.about-card:hover { transform: translateY(-6px); border-color: rgba(6, 182, 212, .45); box-shadow: var(--shadow-sm); }
.about-card-head { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.about-num {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  background: var(--gradient);
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 10px;
}
.about-card h3 { font-size: 20px; color: var(--text); letter-spacing: 2px; }
.about-card p { color: var(--text-secondary); font-size: 15px; }
.advantage-list { list-style: none; }
.advantage-list li { padding: 8px 0; font-size: 14.5px; color: var(--text-secondary); border-bottom: 1px dashed var(--border); }
.advantage-list li:last-child { border-bottom: 0; }
.advantage-list b { color: var(--primary); font-weight: 600; }

/* ===== 投资战略 ===== */
.strategy {
  background: var(--bg);
  overflow: hidden;
}
.strategy-canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .5; }
.strategy-grid { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.strategy-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform .35s, border-color .35s, box-shadow .35s;
}
.strategy-card-inner {
  position: relative;
  z-index: 2;
  padding: 38px 30px;
  height: 100%;
}
.strategy-card::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity .4s;
  pointer-events: none;
}
.strategy-card[data-theme="tech"]::before {
  background:
    radial-gradient(circle at 30% 20%, rgba(37, 99, 235, .16), transparent 60%),
    radial-gradient(circle at 75% 85%, rgba(37, 99, 235, .10), transparent 55%);
}
.strategy-card[data-theme="scene"]::before {
  background:
    radial-gradient(circle at 70% 25%, rgba(6, 182, 212, .16), transparent 60%),
    radial-gradient(circle at 25% 80%, rgba(37, 99, 235, .12), transparent 55%);
}
.strategy-card[data-theme="data"]::before {
  background:
    radial-gradient(circle at 50% 30%, rgba(37, 99, 235, .14), transparent 60%),
    radial-gradient(circle at 30% 80%, rgba(6, 182, 212, .14), transparent 55%);
}
.strategy-card:hover { transform: translateY(-10px); border-color: rgba(37, 99, 235, .45); box-shadow: var(--shadow-md); }
.strategy-card:hover::before { opacity: 1; }
.strategy-icon {
  width: 60px; height: 60px;
  display: grid; place-items: center;
  font-size: 28px;
  color: #fff;
  background: var(--gradient);
  border-radius: 14px;
  margin-bottom: 22px;
  box-shadow: 0 6px 18px rgba(37, 99, 235, .25);
}
.strategy-card h3 { font-size: 20px; color: var(--text); letter-spacing: 1px; margin-bottom: 10px; }
.strategy-tagline {
  display: inline-block;
  font-size: 12.5px;
  color: var(--primary);
  font-weight: 600;
  background: var(--primary-soft);
  border: 1px solid rgba(37, 99, 235, .25);
  padding: 3px 14px;
  border-radius: 12px;
  margin-bottom: 20px;
}
.strategy-dir, .strategy-logic { font-size: 14.5px; color: var(--text-secondary); margin-bottom: 14px; }
.strategy-dir b { color: var(--primary); font-weight: 600; }
.strategy-logic b { color: var(--secondary); font-weight: 600; }

/* ===== 投后赋能 ===== */
.empower { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.empower-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.empower-item {
  text-align: center;
  padding: 44px 30px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: transform .3s, border-color .3s, box-shadow .3s;
}
.empower-item:hover { transform: translateY(-6px); border-color: rgba(6, 182, 212, .45); box-shadow: var(--shadow-sm); }
.empower-icon {
  font-size: 40px;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-bottom: 20px;
  display: inline-block;
}
.empower-item h3 { font-size: 19px; color: var(--text); letter-spacing: 2px; margin-bottom: 14px; }
.empower-item p { font-size: 14.5px; color: var(--text-secondary); }

/* ===== 投资组合 ===== */
.portfolio { background: var(--bg); }
.portfolio-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.portfolio-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform .3s, border-color .3s, box-shadow .3s;
}
.portfolio-card:hover { transform: translateY(-8px); border-color: rgba(37, 99, 235, .4); box-shadow: var(--shadow-md); }
.portfolio-visual { height: 190px; position: relative; }
.visual-tech {
  background:
    linear-gradient(160deg, rgba(37, 99, 235, .85), rgba(15, 23, 42, .88)),
    repeating-linear-gradient(45deg, transparent 0 14px, rgba(255,255,255,.06) 14px 15px);
}
.visual-tech::after {
  content: "◈";
  position: absolute; inset: 0;
  display: grid; place-items: center;
  font-size: 64px; color: rgba(255, 255, 255, .9);
  animation: pulseIcon 3s ease-in-out infinite;
}
.visual-scene {
  background:
    linear-gradient(160deg, rgba(6, 182, 212, .55), rgba(15, 23, 42, .9)),
    radial-gradient(circle at 70% 30%, rgba(37, 99, 235, .5), transparent 50%);
}
.visual-scene::after {
  content: "◉";
  position: absolute; inset: 0;
  display: grid; place-items: center;
  font-size: 64px; color: rgba(255, 255, 255, .92);
  animation: pulseIcon 3s ease-in-out infinite .5s;
}
.visual-data {
  background:
    linear-gradient(160deg, rgba(37, 99, 235, .7), rgba(6, 182, 212, .75)),
    repeating-linear-gradient(0deg, transparent 0 16px, rgba(255,255,255,.05) 16px 17px);
}
.visual-data::after {
  content: "⬡";
  position: absolute; inset: 0;
  display: grid; place-items: center;
  font-size: 64px; color: rgba(255, 255, 255, .92);
  animation: pulseIcon 3s ease-in-out infinite 1s;
}
@keyframes pulseIcon { 0%,100% { transform: scale(1); opacity: .8; } 50% { transform: scale(1.12); opacity: 1; } }
.portfolio-body { padding: 26px 24px; }
.portfolio-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--primary);
  border: 1px solid rgba(37, 99, 235, .35);
  background: var(--primary-soft);
  border-radius: 12px;
  padding: 2px 12px;
  margin-bottom: 14px;
}
.portfolio-body h3 { font-size: 19px; color: var(--text); letter-spacing: 1px; margin-bottom: 10px; }
.portfolio-body p { font-size: 14.5px; color: var(--text-secondary); }

/* ===== 研究院 ===== */
.insight { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.insight-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.insight-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 34px 28px;
  display: flex;
  flex-direction: column;
  transition: transform .3s, border-color .3s, box-shadow .3s;
}
.insight-card:hover { transform: translateY(-6px); border-color: rgba(6, 182, 212, .45); box-shadow: var(--shadow-sm); }
.insight-tag {
  align-self: flex-start;
  font-size: 12px;
  color: var(--secondary);
  background: var(--secondary-soft);
  border: 1px solid rgba(6, 182, 212, .35);
  border-radius: 12px;
  padding: 3px 13px;
  margin-bottom: 16px;
}
.insight-card h3 { font-size: 18px; color: var(--text); letter-spacing: 1px; margin-bottom: 12px; line-height: 1.5; }
.insight-card p { font-size: 14.5px; color: var(--text-secondary); flex: 1; }
.insight-link { margin-top: 18px; font-size: 13px; color: var(--primary); letter-spacing: 1px; font-weight: 600; }

/* ===== 合作联系 ===== */
.contact { background: var(--bg); }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-bottom: 44px; }
.contact-card {
  text-align: center;
  padding: 42px 30px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform .3s, border-color .3s, box-shadow .3s;
}
.contact-card:hover { transform: translateY(-6px); border-color: rgba(37, 99, 235, .45); box-shadow: var(--shadow-md); }
.contact-card h3 { font-size: 20px; color: var(--text); letter-spacing: 2px; margin-bottom: 14px; }
.contact-card p { font-size: 14.5px; color: var(--text-secondary); margin-bottom: 26px; min-height: 48px; }
.btn-gold, .btn-outline {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 26px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 1px;
  transition: all .3s;
}
.btn-gold {
  color: #fff;
  background: var(--gradient);
  box-shadow: 0 8px 24px rgba(37, 99, 235, .3);
}
.btn-gold:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(37, 99, 235, .4); }
.btn-outline { color: var(--primary); border: 1px solid rgba(37, 99, 235, .5); }
.btn-outline:hover { background: var(--primary-soft); transform: translateY(-3px); }
.contact-info { text-align: center; color: var(--text-secondary); font-size: 14px; letter-spacing: 1px; }
.contact-info .sep { margin: 0 14px; color: var(--border); }

/* ===== 页脚 ===== */
.site-footer { background: var(--text); padding: 46px 0 30px; }
.footer-inner { text-align: center; }
.footer-brand { display: flex; align-items: center; justify-content: center; gap: 12px; margin-bottom: 22px; }
.footer-brand .brand-mark { width: 36px; height: 36px; font-size: 18px; border-radius: 8px; }
.footer-name { font-size: 17px; font-weight: 700; color: #fff; letter-spacing: 2px; text-align: left; }
.footer-en { font-size: 11px; color: #94A3B8; letter-spacing: 2px; text-align: left; }
.footer-nav { display: flex; justify-content: center; flex-wrap: wrap; gap: 26px; margin-bottom: 22px; }
.footer-nav a { font-size: 14px; color: #CBD5E1; transition: color .25s; }
.footer-nav a:hover { color: #38BDF8; }
.footer-copy { font-size: 12.5px; color: #94A3B8; letter-spacing: 1px; }

/* ===== 滚动显现动画 ===== */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .8s ease, transform .8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal.delay-1 { transition-delay: .12s; }
.reveal.delay-2 { transition-delay: .24s; }
.reveal.delay-3 { transition-delay: .36s; }

.fade-up { opacity: 0; transform: translateY(36px); animation: fadeUp .9s ease forwards; }
.fade-up.delay-1 { animation-delay: .15s; }
.fade-up.delay-2 { animation-delay: .3s; }
.fade-up.delay-3 { animation-delay: .45s; }
.fade-up.delay-4 { animation-delay: .6s; }
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }

/* ===== 响应式 ===== */
@media (max-width: 992px) {
  .about-grid, .strategy-grid, .empower-grid,
  .portfolio-grid, .insight-grid, .contact-grid {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
  }
  .main-nav {
    position: fixed;
    top: 0; right: -280px;
    width: 260px; height: 100vh;
    flex-direction: column;
    justify-content: center;
    gap: 26px;
    background: rgba(248, 250, 252, .98);
    border-left: 1px solid var(--border);
    transition: right .35s ease;
  }
  .main-nav.open { right: 0; }
  .nav-toggle { display: flex; z-index: 101; }
  .section { padding: 80px 0; }
}

@media (max-width: 560px) {
  .hero-entries { flex-direction: column; align-items: center; }
  .entry-card { width: 100%; max-width: 320px; flex-direction: row; justify-content: flex-start; gap: 14px; text-align: left; }
  .entry-icon { font-size: 26px; }
  .hero-title { letter-spacing: 6px; }
}