/* ============================================
   EDA Work · AI 驱动的 EDA 智能化解决方案
   主题：暗色科技风 + 电路质感
   ============================================ */

:root {
  /* 主色 */
  --brand: #246BCE;
  --brand-2: #3B82F6;
  --brand-3: #60A5FA;
  --accent: #00D4FF;
  --accent-2: #06B6D4;

  /* 状态色 */
  --ok: #10B981;
  --warn: #F59E0B;
  --err: #EF4444;

  /* 中性色 */
  --bg-0: #06090F;
  --bg-1: #0A0E1A;
  --bg-2: #0F1525;
  --bg-3: #161D33;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(36, 107, 206, 0.25);

  /* 文本 */
  --text-1: #F4F6FB;
  --text-2: #C4CBDB;
  --text-3: #8A93A8;
  --text-4: #5A6377;

  /* 渐变 */
  --grad-brand: linear-gradient(135deg, #246BCE 0%, #00D4FF 100%);
  --grad-text: linear-gradient(135deg, #60A5FA 0%, #00D4FF 60%, #34D399 100%);
  --grad-card: linear-gradient(180deg, rgba(36, 107, 206, 0.06) 0%, rgba(36, 107, 206, 0) 100%);

  /* 排版 */
  --font-sans: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Menlo', 'Consolas', monospace;

  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 12px 40px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 24px 80px rgba(0, 0, 0, 0.5);
  --glow-brand: 0 0 40px rgba(36, 107, 206, 0.35);
  --glow-accent: 0 0 60px rgba(0, 212, 255, 0.25);

  /* 容器 */
  --container: 1240px;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-1);
  background: var(--bg-0);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  display: block;
}

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

/* ============================================
   背景层
   ============================================ */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(36, 107, 206, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 100% 100%, rgba(0, 212, 255, 0.10) 0%, transparent 60%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 100%);
}

.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 30%, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 30%, transparent 90%);
}

.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.5;
  pointer-events: none;
}
.bg-glow-1 {
  width: 600px;
  height: 600px;
  background: #246BCE;
  top: -200px;
  right: -100px;
  opacity: 0.3;
}
.bg-glow-2 {
  width: 500px;
  height: 500px;
  background: #00D4FF;
  bottom: -150px;
  left: -100px;
  opacity: 0.18;
}

#particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* ============================================
   顶部导航
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: all 0.3s ease;
  background: rgba(6, 9, 15, 0.0);
}

.nav.scrolled {
  padding: 12px 0;
  background: rgba(6, 9, 15, 0.78);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.brand-logo {
  width: 36px;
  height: 36px;
  filter: drop-shadow(0 0 12px rgba(36, 107, 206, 0.5));
}

.brand-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-links {
  display: flex;
  gap: 36px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
}

.nav-links a {
  position: relative;
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: var(--grad-brand);
  transition: all 0.25s ease;
  transform: translateX(-50%);
}

.nav-links a:hover {
  color: var(--text-1);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  color: var(--text-1);
  background: rgba(36, 107, 206, 0.08);
  transition: all 0.25s ease;
}

.nav-cta:hover {
  background: rgba(36, 107, 206, 0.18);
  border-color: var(--brand-3);
  box-shadow: 0 0 24px rgba(36, 107, 206, 0.35);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh;
  padding: 140px 0 80px;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(36, 107, 206, 0.08);
  border: 1px solid var(--line-2);
  color: var(--text-2);
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  margin-bottom: 28px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: pulse 1.8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.9); }
}

.hero-title {
  font-size: clamp(40px, 5.6vw, 72px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin-bottom: 28px;
}

.title-line {
  display: block;
}

.grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

.hero-subtitle {
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.7;
  color: var(--text-2);
  margin-bottom: 40px;
  max-width: 580px;
}

.hero-subtitle strong {
  color: var(--text-1);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 64px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 999px;
  transition: all 0.25s ease;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-brand);
  color: white;
  box-shadow: 0 8px 24px rgba(36, 107, 206, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(36, 107, 206, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.btn-primary svg {
  transition: transform 0.25s ease;
}

.btn-primary:hover svg {
  transform: translateX(3px);
}

.btn-ghost {
  border: 1px solid var(--line);
  color: var(--text-1);
  background: rgba(255, 255, 255, 0.02);
}

.btn-ghost:hover {
  border-color: var(--brand-3);
  background: rgba(36, 107, 206, 0.08);
}

.hero-stats {
  display: flex;
  gap: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.stat-num {
  font-size: 38px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-1);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-3);
  letter-spacing: 0.02em;
}

/* Hero 右侧视觉 */
.hero-visual {
  position: relative;
  height: 480px;
}

.visual-card {
  position: absolute;
  background: linear-gradient(180deg, rgba(22, 29, 51, 0.95) 0%, rgba(15, 21, 37, 0.95) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-md);
  transition: transform 0.4s ease;
}

.visual-card:hover {
  transform: translateY(-4px) scale(1.02);
}

.card-1 {
  top: 0;
  left: 0;
  width: 380px;
  z-index: 3;
}

.card-2 {
  top: 40px;
  right: 0;
  width: 260px;
  z-index: 2;
}

.card-3 {
  bottom: 0;
  left: 80px;
  width: 280px;
  z-index: 1;
}

.card-head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 12px;
}

.card-head span:not(.card-title) {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #EF4444; }
.dot-yellow { background: #F59E0B; }
.dot-green { background: #10B981; }

.card-title {
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
}

.card-body {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-2);
  white-space: pre-wrap;
}

.c-key { color: #C084FC; }
.c-fn { color: #60A5FA; }

/* Hero AI 对话卡 */
.chat-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 12.5px;
  line-height: 1.6;
}

.msg {
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.msg-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.msg-user .msg-avatar {
  background: rgba(36, 107, 206, 0.22);
  color: var(--brand-3);
  border: 1px solid rgba(36, 107, 206, 0.35);
}

.msg-ai .msg-avatar {
  background: var(--grad-brand);
  color: white;
  box-shadow: 0 0 12px rgba(36, 107, 206, 0.45);
}

.msg-text {
  color: var(--text-2);
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--line);
  border-radius: 10px;
  flex: 1;
}

.msg-user .msg-text {
  background: rgba(36, 107, 206, 0.08);
  border-color: rgba(36, 107, 206, 0.22);
}

.msg-text strong {
  color: var(--text-1);
  font-weight: 600;
}

.msg-tag {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 5px;
  background: rgba(0, 212, 255, 0.12);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
}

.msg-suggest .msg-text {
  background: linear-gradient(90deg, rgba(0, 212, 255, 0.08) 0%, rgba(36, 107, 206, 0.05) 100%);
  border-color: rgba(0, 212, 255, 0.25);
  color: var(--text-1);
}

.msg-suggest-label {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 4px;
  background: rgba(0, 212, 255, 0.18);
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  margin-right: 6px;
}

.mini-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 4px;
  border-bottom: 1px dashed var(--line);
  font-size: 13px;
  color: var(--text-2);
}
.mini-row:last-child { border-bottom: none; }

.mini-icon {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(36, 107, 206, 0.15);
  font-size: 13px;
}

/* AI 球体 */
.ai-orb {
  width: 140px;
  height: 140px;
  margin: 20px auto 16px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orb-core {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--grad-brand);
  box-shadow: 0 0 40px rgba(36, 107, 206, 0.6), inset 0 0 20px rgba(255, 255, 255, 0.3);
  position: relative;
  z-index: 2;
}

.orb-ring {
  position: absolute;
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 50%;
  border-top-color: rgba(0, 212, 255, 0.9);
}

.orb-ring.r1 {
  width: 90px; height: 90px;
  animation: rotate 4s linear infinite;
}
.orb-ring.r2 {
  width: 115px; height: 115px;
  border-top-color: rgba(36, 107, 206, 0.9);
  animation: rotate 7s linear infinite reverse;
}
.orb-ring.r3 {
  width: 140px; height: 140px;
  border-top-color: rgba(96, 165, 250, 0.9);
  animation: rotate 10s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0); }
  to { transform: rotate(360deg); }
}

.card-foot {
  display: flex;
  justify-content: space-between;
  padding-top: 8px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
}

.card-foot .status {
  color: var(--ok);
  position: relative;
  padding-left: 12px;
}
.card-foot .status::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--ok);
  transform: translateY(-50%);
  box-shadow: 0 0 8px var(--ok);
  animation: pulse 1.8s infinite;
}

/* 滚动提示 */
.scroll-cue {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  animation: bob 2s ease-in-out infinite;
}

.cue-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, transparent 0%, var(--brand-3) 50%, transparent 100%);
}

@keyframes bob {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 8px); }
}

/* ============================================
   通用 Section
   ============================================ */
.section {
  padding: 120px 0;
  position: relative;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--brand-3);
}

.section-tag::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--brand-3);
}

.section-tag.accent {
  color: var(--accent);
}
.section-tag.accent::before {
  background: var(--accent);
}

.section-title {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.section-lede {
  font-size: clamp(15px, 1.2vw, 18px);
  color: var(--text-2);
  max-width: 720px;
  margin-bottom: 72px;
}

.section-lede strong {
  color: var(--text-1);
  font-weight: 600;
}

/* ============================================
   About
   ============================================ */
.about {
  background: linear-gradient(180deg, transparent 0%, rgba(36, 107, 206, 0.03) 50%, transparent 100%);
}

.quote {
  position: relative;
  max-width: 880px;
  padding: 48px 56px;
  margin-top: 32px;
  border-left: 3px solid var(--brand-2);
  background: linear-gradient(90deg, rgba(36, 107, 206, 0.06) 0%, transparent 100%);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.quote-mark {
  position: absolute;
  top: -10px;
  left: 18px;
  font-size: 100px;
  line-height: 1;
  font-family: Georgia, serif;
  color: var(--brand-2);
  opacity: 0.4;
}

.quote p {
  font-size: clamp(16px, 1.3vw, 20px);
  line-height: 1.8;
  color: var(--text-1);
  margin-bottom: 14px;
}

.quote .quote-em {
  color: var(--text-2);
  font-style: italic;
}

/* ============================================
   Capabilities
   ============================================ */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.cap-card {
  position: relative;
  padding: 36px 32px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.35s ease;
}

.cap-card::before {
  content: attr(data-i);
  position: absolute;
  top: 18px;
  right: 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-4);
  letter-spacing: 0.1em;
}

.cap-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-card);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.cap-card:hover {
  transform: translateY(-6px);
  border-color: var(--brand-2);
  box-shadow: 0 16px 48px rgba(36, 107, 206, 0.18);
}

.cap-card:hover::after {
  opacity: 1;
}

.cap-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(36, 107, 206, 0.18) 0%, rgba(0, 212, 255, 0.10) 100%);
  border: 1px solid var(--line-2);
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.cap-icon svg {
  width: 28px;
  height: 28px;
  color: var(--brand-3);
}

.cap-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.cap-card p {
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.cap-list {
  list-style: none;
  position: relative;
  z-index: 1;
}

.cap-list li {
  position: relative;
  padding: 8px 0 8px 22px;
  font-size: 14px;
  color: var(--text-2);
  border-top: 1px dashed var(--line);
}

.cap-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  width: 8px;
  height: 8px;
  border: 2px solid var(--brand-3);
  transform: translateY(-50%) rotate(45deg);
  border-radius: 1px;
}

.cap-corner {
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, transparent 50%, rgba(36, 107, 206, 0.15) 50%);
  pointer-events: none;
}

/* ============================================
   AI Section
   ============================================ */
.ai-section {
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0, 212, 255, 0.08) 0%, transparent 60%),
    var(--bg-1);
  position: relative;
  overflow: hidden;
}

.ai-stage {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
  margin-bottom: 72px;
}

.ai-stage-bg {
  position: absolute;
  inset: -40px -40px;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 30%, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 30%, transparent 90%);
  z-index: 0;
  pointer-events: none;
}

.ai-features {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.ai-feat {
  padding: 32px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(15, 21, 37, 0.7);
  backdrop-filter: blur(20px);
  transition: all 0.3s ease;
}

.ai-feat-center {
  border-color: var(--brand-2);
  box-shadow: 0 0 40px rgba(36, 107, 206, 0.15);
}

.ai-feat:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.2);
}

.ai-feat-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-bottom: 14px;
}

.ai-feat h4 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 14px;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.ai-feat p {
  color: var(--text-2);
  font-size: 14.5px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.ai-feat-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.25);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
}

/* AI Console */
.ai-console {
  position: relative;
  z-index: 1;
  background: linear-gradient(180deg, #0A0F1E 0%, #060A14 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  font-family: var(--font-mono);
}

.console-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.console-tabs {
  display: flex;
  gap: 8px;
}

.tab {
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 12px;
  color: var(--text-3);
}

.tab.active {
  background: rgba(36, 107, 206, 0.18);
  color: var(--brand-3);
}

.console-dots {
  display: flex;
  gap: 6px;
}

.console-dots span {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--bg-3);
}

.console-body {
  padding: 28px;
  font-size: 14px;
  line-height: 2;
  color: var(--text-2);
  min-height: 260px;
}

.line {
  white-space: nowrap;
  overflow: hidden;
}

.line.out {
  color: var(--text-3);
}

.prompt {
  color: var(--accent);
  margin-right: 8px;
}

.cmd { color: var(--text-1); }

.ok {
  display: inline-block;
  width: 18px;
  color: var(--ok);
  margin-right: 4px;
}

.warn {
  display: inline-block;
  width: 18px;
  color: var(--warn);
  margin-right: 4px;
}

.cursor {
  display: inline-block;
  width: 10px;
  background: var(--accent);
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* AI Beliefs */
.ai-beliefs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding-top: 48px;
  border-top: 1px solid var(--line);
}

.belief {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.belief span {
  font-size: 22px;
  font-weight: 700;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.belief p {
  font-size: 14.5px;
  color: var(--text-2);
}

/* ============================================
   Scenes
   ============================================ */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.scene {
  padding: 28px 24px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: all 0.3s ease;
}

.scene:hover {
  border-color: var(--brand-3);
  transform: translateY(-3px);
  background: linear-gradient(180deg, var(--bg-2) 0%, rgba(36, 107, 206, 0.05) 100%);
}

.scene-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  background: rgba(36, 107, 206, 0.12);
  border: 1px solid var(--line-2);
  margin-bottom: 18px;
}

.scene h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.scene p {
  font-size: 14.5px;
  color: var(--text-3);
  line-height: 1.7;
}

/* ============================================
   Workflow
   ============================================ */
.flow {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex-wrap: wrap;
}

.flow-step {
  flex: 1;
  min-width: 180px;
  position: relative;
}

.flow-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--brand-2);
  box-shadow: 0 0 0 6px rgba(36, 107, 206, 0.18), 0 0 16px rgba(36, 107, 206, 0.6);
  margin: 0 auto 20px;
}

.flow-card {
  padding: 24px 20px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: center;
  transition: all 0.3s ease;
}

.flow-card:hover {
  border-color: var(--brand-3);
  transform: translateY(-4px);
}

.flow-step-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--brand-3);
  margin-bottom: 12px;
}

.flow-card h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.flow-card p {
  font-size: 13.5px;
  color: var(--text-3);
  line-height: 1.6;
}

.flow-arrow {
  align-self: center;
  width: 36px;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--brand-3) 50%, transparent 100%);
  position: relative;
  flex-shrink: 0;
}

.flow-arrow::after {
  content: '▶';
  position: absolute;
  right: -2px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 8px;
  color: var(--brand-3);
}

/* ============================================
   CTA / Footer
   ============================================ */
.cta {
  padding: 100px 0 120px;
  background:
    radial-gradient(ellipse 60% 80% at 50% 50%, rgba(36, 107, 206, 0.15) 0%, transparent 60%),
    var(--bg-0);
}

.cta-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
  align-items: center;
}

.cta-title {
  font-size: clamp(34px, 4vw, 54px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.cta-sub {
  font-size: 17px;
  color: var(--text-2);
  margin-bottom: 36px;
  max-width: 540px;
}

.cta-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.cta-domain {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--brand-3);
  letter-spacing: 0.05em;
}

.cta-mark {
  position: relative;
  width: 280px;
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

.cta-mark img {
  width: 140px;
  height: 140px;
  filter: drop-shadow(0 0 30px rgba(36, 107, 206, 0.5));
  z-index: 2;
  position: relative;
}

.cta-mark-ring {
  position: absolute;
  inset: 0;
  border: 1px solid var(--line-2);
  border-radius: 50%;
  border-top-color: var(--brand-3);
  border-right-color: transparent;
  animation: rotate 12s linear infinite;
}
.cta-mark-ring::before {
  content: '';
  position: absolute;
  inset: 20px;
  border: 1px solid var(--line);
  border-radius: 50%;
  border-bottom-color: var(--accent);
  border-left-color: transparent;
  animation: rotate 8s linear infinite reverse;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 28px 0;
  background: var(--bg-0);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--text-3);
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-logo {
  width: 24px;
  height: 24px;
}

/* ============================================
   Reveal 动画
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { height: 380px; max-width: 480px; margin: 0 auto; width: 100%; }
  .cap-grid, .ai-features, .scene-grid, .ai-beliefs { grid-template-columns: repeat(2, 1fr); }
  .cta-inner { grid-template-columns: 1fr; }
  .cta-mark { width: 200px; height: 200px; }
  .cta-mark img { width: 100px; height: 100px; }
}

@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .nav-links { display: none; }
  .hero { padding: 110px 0 60px; }
  .hero-stats { gap: 32px; }
  .stat-num { font-size: 28px; }
  .hero-visual { height: auto; }
  .visual-card { position: relative; width: 100% !important; margin-bottom: 16px; }
  .card-1, .card-2, .card-3 { top: auto; left: auto; right: auto; bottom: auto; }
  .section { padding: 80px 0; }
  .section-lede { margin-bottom: 48px; }
  .cap-grid, .ai-features, .scene-grid, .ai-beliefs { grid-template-columns: 1fr; }
  .quote { padding: 32px 28px; }
  .flow { flex-direction: column; }
  .flow-arrow { width: 1px; height: 24px; transform: rotate(90deg); align-self: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}