/* ==========================================================================
   湃客AI (PAIPRO) 品牌高端重构样式表
   设计美学: 精密晶体切面 (Gem Cut Geometry) + 极简奢华工业风 + 全屏H5精准响应式
   ========================================================================== */

:root {
  /* 品牌核心调色盘 - 基于湃客晶体 Logo 衍生 */
  --bg-dark: #080b11;
  --bg-surface: #0f1523;
  --bg-card: rgba(18, 25, 40, 0.65);
  --bg-card-hover: rgba(25, 36, 58, 0.85);

  --sapphire-blue: #2563eb;
  --sapphire-light: #38bdf8;
  --sapphire-dark: #1d4ed8;
  --accent-gold: #fbbf24;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-active: rgba(56, 189, 248, 0.35);

  --gradient-gem: linear-gradient(135deg, #38bdf8 0%, #2563eb 50%, #1d4ed8 100%);
  --gradient-text: linear-gradient(180deg, #ffffff 0%, #cbd5e1 100%);

  --font-sans: 'Noto Sans SC', 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;

  --shadow-gem: 0 10px 30px -10px rgba(37, 99, 235, 0.3);
  --shadow-card: 0 20px 40px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

/* 基础重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   按钮体系
   ========================================================================== */

.btn-prime {
  background: var(--gradient-gem);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-gem);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.btn-prime:active {
  transform: scale(0.98);
}

.btn-prime:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px -5px rgba(37, 99, 235, 0.5);
  filter: brightness(1.1);
}

.btn-subtle {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-subtle);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-ghost {
  background: rgba(15, 21, 35, 0.7);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 500;
  backdrop-filter: blur(16px);
  transition: all 0.25s ease;
}

.btn-ghost:hover {
  border-color: var(--sapphire-light);
  transform: translateY(-2px);
}

.btn-xl {
  padding: 16px 36px;
  font-size: 1.05rem;
}

.btn-prime-sm {
  background: var(--sapphire-blue);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s ease;
}

.crystal-gradient-text {
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #6366f1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section {
  padding: 100px 0;
  position: relative;
}

.section-label {
  color: var(--sapphire-light);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-heading {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.2;
  margin-bottom: 16px;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-subtext {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 680px;
  line-height: 1.6;
}

/* ==========================================================================
   悬浮胶囊导航栏 (Floating Pill Navbar)
   ========================================================================== */

.navbar-wrapper {
  position: fixed;
  top: 16px;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: center;
  padding: 0 16px;
}

.navbar-pill {
  width: 100%;
  max-width: 1100px;
  background: rgba(12, 17, 27, 0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-pill);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  position: relative;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
  object-fit: cover;
}

.brand-text {
  display: flex;
  align-items: center;
  gap: 6px;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
}

.brand-ai {
  color: var(--sapphire-light);
}

.brand-tag {
  background: rgba(56, 189, 248, 0.12);
  color: var(--sapphire-light);
  border: 1px solid rgba(56, 189, 248, 0.25);
  font-size: 0.7rem;
  padding: 2px 7px;
  border-radius: 6px;
  font-weight: 600;
}

.nav-menu {
  display: flex;
  gap: 28px;
}

.nav-menu a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: 0.2s ease;
}

.nav-menu a:hover {
  color: #fff;
}

.nav-cta {
  display: flex;
  gap: 10px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.3rem;
  cursor: pointer;
  padding: 4px;
}

/* ==========================================================================
   Hero 大屏 (Gem Precision Aesthetic)
   ========================================================================== */

.hero {
  padding: 150px 0 80px;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.hero-facet-bg {
  position: absolute;
  top: -15%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background: 
    radial-gradient(ellipse at 50% 20%, rgba(37, 99, 235, 0.22) 0%, transparent 60%),
    radial-gradient(ellipse at 30% 50%, rgba(56, 189, 248, 0.12) 0%, transparent 50%);
  filter: blur(70px);
  pointer-events: none;
}

.hero-orbit-rings {
  position: absolute;
  top: 120px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 450px;
  pointer-events: none;
  opacity: 0.3;
}

.ring {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(56, 189, 248, 0.25);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.ring-1 { width: 500px; height: 260px; }
.ring-2 { width: 750px; height: 380px; }

.badge-capsule {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(18, 25, 40, 0.8);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  color: var(--sapphire-light);
  margin-bottom: 20px;
}

.capsule-dot {
  width: 7px;
  height: 7px;
  background: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-emerald);
}

.hero-heading {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}

.sub-heading-line {
  color: #fff;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 740px;
  margin: 0 auto 36px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
}

/* 核心指标条 */
.metrics-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: rgba(15, 21, 35, 0.85);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 22px 28px;
  backdrop-filter: blur(20px);
  max-width: 960px;
  margin: 0 auto 60px;
  box-shadow: var(--shadow-card);
}

.metric-card {
  text-align: center;
}

.metric-val {
  font-size: 2.1rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 4px;
}

.metric-val small {
  font-size: 1.05rem;
  color: var(--sapphire-light);
  margin-left: 2px;
}

.metric-lbl {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.metric-sep {
  width: 1px;
  height: 38px;
  background: var(--border-subtle);
  align-self: center;
  justify-self: center;
}

/* 控制中枢卡片 Frame */
.console-stage {
  max-width: 1040px;
  margin: 0 auto;
  position: relative;
}

.stage-glow {
  position: absolute;
  inset: -15px;
  background: radial-gradient(circle at center, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
  filter: blur(30px);
}

.console-frame {
  background: #0b0f19;
  border: 1px solid var(--border-active);
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.7), var(--shadow-card);
  overflow: hidden;
  text-align: left;
  position: relative;
}

.console-header {
  background: rgba(18, 25, 40, 0.9);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
}

.window-controls {
  display: flex;
  gap: 8px;
}

.window-controls span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.wc-red { background: #ff5f56; }
.wc-yellow { background: #ffbd2e; }
.wc-green { background: #27c93f; }

.console-title {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: monospace;
}

.console-badge {
  font-size: 0.75rem;
  color: var(--accent-emerald);
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.live-pulse {
  width: 7px;
  height: 7px;
  background: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulse 1.5s infinite;
}

.console-body {
  display: grid;
  grid-template-columns: 260px 1fr;
}

.console-devices {
  background: rgba(8, 12, 20, 0.7);
  border-right: 1px solid var(--border-subtle);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.dev-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 10px;
}

.dev-item.active {
  background: rgba(37, 99, 235, 0.12);
  border-color: var(--sapphire-blue);
}

.dev-icon i {
  font-size: 1.2rem;
  color: var(--sapphire-light);
}

.dev-meta {
  flex: 1;
}

.dev-name {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: #fff;
}

.dev-status {
  font-size: 0.72rem;
  color: var(--text-tertiary);
}

.dev-tag {
  font-size: 0.68rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(56, 189, 248, 0.15);
  color: var(--sapphire-light);
}

.dev-tag.green { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }
.dev-tag.gold { background: rgba(251, 191, 36, 0.15); color: var(--accent-gold); }

.console-stream {
  padding: 18px;
  background: #060911;
  display: flex;
  flex-direction: column;
}

.stream-title {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--sapphire-light);
  margin-bottom: 12px;
  font-family: monospace;
}

.stream-log-container {
  height: 240px;
  overflow-y: auto;
  font-family: monospace;
  font-size: 0.82rem;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.log-row {
  display: flex;
  gap: 10px;
  line-height: 1.4;
}

.log-time { color: var(--text-tertiary); }
.log-tag { color: var(--accent-gold); font-weight: bold; }
.log-msg { color: var(--text-primary); }
.log-msg strong { color: var(--sapphire-light); }

/* ==========================================================================
   Bento Grid 痛点与突破卡片区
   ========================================================================== */

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.bento-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  transition: all 0.3s ease;
  backdrop-filter: blur(15px);
  display: flex;
  flex-direction: column;
}

.pain-box {
  background: rgba(20, 15, 25, 0.5);
  border-color: rgba(244, 63, 94, 0.15);
}

.hero-bento {
  grid-column: span 2;
  background: linear-gradient(145deg, rgba(37, 99, 235, 0.15) 0%, rgba(15, 21, 35, 0.85) 100%);
  border-color: rgba(56, 189, 248, 0.3);
}

.box-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--gradient-gem);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
}

.box-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 16px;
}

.box-icon.danger { background: rgba(244, 63, 94, 0.15); color: var(--accent-rose); }
.box-icon.brand { background: rgba(56, 189, 248, 0.15); color: var(--sapphire-light); }
.box-icon.green { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }

.bento-box h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: #fff;
}

.bento-box p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.55;
  flex: 1;
}

.box-meta {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  margin-top: 14px;
}

.bento-visual-mini {
  margin-top: 16px;
  background: rgba(0, 0, 0, 0.3);
  padding: 10px;
  border-radius: var(--radius-sm);
}

.mini-bar-fill {
  height: 5px;
  background: var(--gradient-gem);
  border-radius: 3px;
  margin-bottom: 6px;
}

.bento-visual-mini span {
  font-size: 0.75rem;
  color: var(--sapphire-light);
  font-weight: 600;
}

/* ==========================================================================
   逻辑演进 (Logic Evolution)
   ========================================================================== */

.logic-cards {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 40px;
}

.logic-step {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  position: relative;
}

.highlight-step {
  background: linear-gradient(160deg, rgba(37, 99, 235, 0.18) 0%, rgba(15, 21, 35, 0.9) 100%);
  border: 1px solid var(--sapphire-light);
  box-shadow: var(--shadow-gem);
}

.step-tag {
  font-size: 0.72rem;
  color: var(--text-tertiary);
  font-weight: 700;
  margin-bottom: 6px;
}

.step-tag.gold { color: var(--accent-gold); }

.step-title {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.step-status {
  display: inline-block;
  font-size: 0.75rem;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.step-status.paipro {
  background: var(--gradient-gem);
  color: #fff;
  font-weight: 600;
}

.step-desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  margin-bottom: 16px;
}

.step-case {
  background: rgba(0, 0, 0, 0.3);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--text-primary);
}

.step-case.gold {
  border-left: 3px solid var(--accent-gold);
}

.logic-arrow {
  color: var(--text-tertiary);
  font-size: 1.1rem;
}

/* ==========================================================================
   三大引擎 Features
   ========================================================================== */

.engine-tabs-nav {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin: 36px 0 40px;
}

.tab-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.tab-btn.active, .tab-btn:hover {
  background: var(--gradient-gem);
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-gem);
}

.engine-pane { display: none; }
.engine-pane.active { display: block; }

.engine-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
}

.engine-kicker {
  color: var(--sapphire-light);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.engine-detail h3 {
  font-size: 1.9rem;
  margin-bottom: 14px;
}

.engine-summary {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 24px;
}

.feature-timeline {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.tl-node {
  display: flex;
  gap: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 14px;
  border-radius: var(--radius-md);
}

.tl-num {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--sapphire-light);
}

.tl-node h4 { font-size: 0.95rem; margin-bottom: 3px; }
.tl-node p { font-size: 0.82rem; color: var(--text-secondary); }

/* 模拟器控制 */
.simulator-card {
  background: #0f1523;
  border: 1px solid var(--border-active);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.sim-header {
  color: var(--sapphire-light);
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
}

.sim-input-wrapper {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}

.sim-input-wrapper input {
  flex: 1;
  background: #060911;
  border: 1px solid var(--border-subtle);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: #fff;
  outline: none;
  font-size: 0.9rem;
}

.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 10px 0 16px;
}

.tag-item {
  background: rgba(37, 99, 235, 0.15);
  color: var(--sapphire-light);
  border: 1px solid rgba(56, 189, 248, 0.3);
  font-size: 0.78rem;
  padding: 3px 8px;
  border-radius: 5px;
}

.sim-verify-status {
  border-top: 1px dashed var(--border-subtle);
  padding-top: 12px;
  font-size: 0.8rem;
}

.text-green { color: var(--accent-emerald); }

.st-progress {
  height: 5px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 6px;
}

.st-bar {
  height: 100%;
  background: var(--gradient-gem);
}

/* 矩阵与截流卡片 */
.matrix-cards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.m-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 20px;
  border-radius: var(--radius-md);
  text-align: center;
}

.m-card i { font-size: 2rem; margin-bottom: 8px; display: block; }
.m-card.dy i { color: #fe2c55; }
.m-card.xhs i { color: #ff2442; }
.m-card.sph i { color: #07c160; }
.m-card.ks i { color: #ff5000; }
.m-card span { display: block; font-weight: 700; font-size: 0.92rem; }
.m-card small { color: var(--text-tertiary); font-size: 0.75rem; }

.intercept-preview {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.ip-title {
  color: var(--sapphire-light);
  font-weight: 700;
  margin-bottom: 14px;
  font-size: 0.88rem;
}

.ip-user { display: flex; gap: 10px; margin-bottom: 12px; }
.u-avatar { width: 32px; height: 32px; background: #334155; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; font-size: 0.85rem; }
.u-name { font-size: 0.72rem; color: var(--text-tertiary); }
.u-msg { background: rgba(255, 255, 255, 0.05); padding: 8px 10px; border-radius: 0 8px 8px 8px; font-size: 0.85rem; margin-top: 3px; }

.ip-ai-detect { background: rgba(251, 191, 36, 0.15); color: var(--accent-gold); padding: 7px 10px; border-radius: var(--radius-sm); font-size: 0.8rem; font-weight: 600; margin-bottom: 10px; }
.ip-action { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); padding: 8px 10px; border-radius: var(--radius-sm); font-size: 0.8rem; }

/* ==========================================================================
   ROI 计算器
   ========================================================================== */

.calc-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.calc-header { text-align: center; margin-bottom: 32px; }

.calc-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

.sliders-col {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sg-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.88rem;
}

.sg-label strong { color: var(--sapphire-light); font-size: 1.05rem; }

.slider-group input[type="range"] {
  width: 100%;
  accent-color: var(--sapphire-blue);
  cursor: pointer;
}

.result-col {
  background: #060911;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-align: center;
}

.rc-label { font-size: 0.82rem; color: var(--text-tertiary); }
.rc-amount { font-size: 2.1rem; font-weight: 800; color: var(--accent-rose); margin: 4px 0; }

.res-divider { color: var(--text-tertiary); margin: 8px 0; }

.rc-tag { background: rgba(251, 191, 36, 0.18); color: var(--accent-gold); font-size: 0.78rem; font-weight: 700; display: inline-block; padding: 3px 10px; border-radius: var(--radius-pill); }
.rc-amount-gold { font-size: 2.6rem; font-weight: 900; color: var(--accent-gold); margin: 6px 0; }

.btn-full { width: 100%; justify-content: center; margin-top: 12px; }

/* ==========================================================================
   行业应用 (Industries)
   ========================================================================== */

.ind-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.ind-pill {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  cursor: pointer;
  transition: 0.2s ease;
  white-space: nowrap;
}

.ind-pill.active {
  background: var(--sapphire-blue);
  color: #fff;
  border-color: var(--sapphire-blue);
}

.ind-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.ind-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
}

.ib-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--sapphire-light);
  margin-bottom: 10px;
}

.ind-box p { font-size: 0.82rem; color: var(--text-secondary); margin-bottom: 4px; }

/* ==========================================================================
   视频演示与关于我们
   ========================================================================== */

.video-trio {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.v-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.v-frame {
  position: relative;
  padding-top: 56.25%;
  background: #000;
}

.v-frame video {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%; object-fit: cover;
}

.v-info { padding: 16px; }
.v-tag { font-size: 0.72rem; color: var(--sapphire-light); font-weight: 700; }
.v-info h4 { font-size: 1rem; margin: 4px 0 4px; }
.v-info p { font-size: 0.82rem; color: var(--text-secondary); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.about-lead { font-size: 1.05rem; margin-bottom: 14px; line-height: 1.6; }
.about-desc { color: var(--text-secondary); margin-bottom: 24px; font-size: 0.9rem; }

.qual-badges { display: flex; flex-direction: column; gap: 10px; }
.qb-item { display: flex; align-items: center; gap: 10px; background: rgba(255, 255, 255, 0.04); border: 1px solid var(--border-subtle); padding: 10px 14px; border-radius: var(--radius-md); font-size: 0.85rem; font-weight: 600; }
.qb-item i { color: var(--accent-gold); }

.qual-img { border-radius: var(--radius-lg); border: 1px solid var(--border-subtle); width: 100%; }

/* 表单与页脚 */
.contact-card {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.15) 0%, rgba(15, 21, 35, 0.9) 100%);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
}

.contact-inner { max-width: 760px; margin: 0 auto; }
.contact-inner h2 { font-size: 1.9rem; margin-bottom: 10px; }
.contact-inner p { color: var(--text-secondary); margin-bottom: 24px; font-size: 0.95rem; }

.lead-form { display: flex; flex-direction: column; gap: 14px; }
.form-inputs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.form-inputs input { background: #060911; border: 1px solid var(--border-subtle); padding: 12px 16px; border-radius: var(--radius-pill); color: #fff; outline: none; font-size: 0.9rem; }

.feishu-integration-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(251, 191, 36, 0.12);
  border: 1px solid rgba(251, 191, 36, 0.25);
  color: var(--accent-gold);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 500;
  margin-top: 18px;
}

.text-gold { color: var(--accent-gold); }

.form-notice { margin-top: 14px; font-size: 0.75rem; color: var(--text-tertiary); }

/* 模态弹窗样式 */
.custom-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.custom-modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.custom-modal-card {
  background: #0f1523;
  border: 1px solid var(--border-active);
  border-radius: var(--radius-lg);
  padding: 36px;
  max-width: 480px;
  width: 100%;
  text-align: center;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
  transform: translateY(20px);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.custom-modal-overlay.active .custom-modal-card {
  transform: translateY(0);
}

.modal-icon {
  width: 60px;
  height: 60px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 16px;
}

.custom-modal-card h3 {
  font-size: 1.5rem;
  margin-bottom: 10px;
  color: #fff;
}

.modal-desc {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.modal-desc strong {
  color: var(--sapphire-light);
}

.feishu-tip-box {
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius-md);
  padding: 14px;
  text-align: left;
  margin-bottom: 24px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.tip-title {
  color: var(--sapphire-light);
  font-weight: 700;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.feishu-tip-box code {
  background: rgba(0, 0, 0, 0.4);
  color: var(--accent-gold);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
}

.modal-close-btn {
  width: 100%;
  justify-content: center;
}

.footer { background: #04060a; border-top: 1px solid var(--border-subtle); padding: 50px 0 24px; font-size: 0.85rem; }
.footer-content { display: grid; grid-template-columns: 2fr 3fr; gap: 32px; }
.footer-brand p { color: var(--text-secondary); margin: 14px 0 16px; font-size: 0.82rem; }
.copyright { color: var(--text-tertiary); font-size: 0.75rem; }

.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.footer-links h5 { color: #fff; margin-bottom: 10px; font-size: 0.9rem; }
.footer-links ul { display: flex; flex-direction: column; gap: 6px; }
.footer-links a { color: var(--text-secondary); font-size: 0.82rem; }

/* 关键帧 */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.92); }
}

/* 全手机端 / H5 精准适配 */
@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .container { padding: 0 16px; }

  .navbar-wrapper { top: 10px; padding: 0 10px; }
  .navbar-pill { padding: 8px 16px; border-radius: 18px; }
  .brand-img { width: 32px; height: 32px; }
  .brand-name { font-size: 1.1rem; }
  .brand-tag { display: none; }

  .nav-menu {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: rgba(12, 17, 27, 0.96);
    backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    flex-direction: column;
    gap: 16px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.7);
  }

  .nav-menu.show-mobile { display: flex; }
  .nav-cta { display: none; }
  .mobile-toggle { display: block; }

  .hero { padding: 120px 0 50px; }
  .hero-heading { font-size: 2.1rem; letter-spacing: -0.5px; }
  .hero-description { font-size: 0.95rem; margin-bottom: 24px; }

  .hero-actions { flex-direction: column; gap: 12px; margin-bottom: 40px; }
  .btn-xl { width: 100%; padding: 14px 20px; font-size: 0.98rem; }

  .metrics-strip { grid-template-columns: 1fr 1fr; gap: 16px 10px; padding: 16px; border-radius: var(--radius-md); }
  .metric-val { font-size: 1.6rem; }
  .metric-lbl { font-size: 0.75rem; }
  .metric-sep { display: none; }

  .console-frame { border-radius: var(--radius-md); }
  .console-body { grid-template-columns: 1fr; }
  .console-devices { display: none; }
  .console-stream { padding: 14px; }
  .stream-log-container { height: 190px; font-size: 0.76rem; }

  .section-heading { font-size: 1.8rem; }
  .section-subtext { font-size: 0.95rem; }

  .bento-grid { grid-template-columns: 1fr; gap: 16px; }
  .hero-bento { grid-column: span 1; }
  .bento-box { padding: 20px; border-radius: var(--radius-md); }

  .logic-cards { flex-direction: column; gap: 12px; }
  .logic-arrow { transform: rotate(90deg); margin: 4px 0; }
  .logic-step { width: 100%; padding: 20px; border-radius: var(--radius-md); }

  .engine-tabs-nav { justify-content: flex-start; overflow-x: auto; padding-bottom: 8px; margin: 24px 0 30px; -webkit-overflow-scrolling: touch; }
  .engine-tabs-nav::-webkit-scrollbar { display: none; }
  .tab-btn { padding: 10px 18px; font-size: 0.85rem; }

  .engine-layout { grid-template-columns: 1fr; gap: 24px; }
  .engine-detail h3 { font-size: 1.5rem; }

  .simulator-card, .intercept-preview { padding: 16px; border-radius: var(--radius-md); }
  .sim-input-wrapper { flex-direction: column; }
  .matrix-cards-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .m-card { padding: 14px 10px; }

  .calc-wrapper { padding: 24px 16px; border-radius: var(--radius-md); }
  .calc-body { grid-template-columns: 1fr; gap: 24px; }
  .rc-amount-gold { font-size: 2.1rem; }

  .ind-tabs { justify-content: flex-start; overflow-x: auto; padding-bottom: 8px; -webkit-overflow-scrolling: touch; }
  .ind-tabs::-webkit-scrollbar { display: none; }
  .ind-grid { grid-template-columns: 1fr; gap: 14px; }

  .video-trio { grid-template-columns: 1fr; gap: 16px; }
  .about-grid { grid-template-columns: 1fr; gap: 24px; }

  .contact-card { padding: 30px 16px; border-radius: var(--radius-md); }
  .contact-inner h2 { font-size: 1.5rem; }

  .form-inputs { grid-template-columns: 1fr; gap: 10px; }
  .form-inputs input { border-radius: var(--radius-sm); padding: 12px 14px; }
  .btn-submit { border-radius: var(--radius-sm); padding: 14px; }

  .footer-content { grid-template-columns: 1fr; gap: 24px; }
  .footer-links { grid-template-columns: 1fr 1fr; gap: 20px; }
}

@media (max-width: 480px) {
  .hero-heading { font-size: 1.8rem; }
  .section-heading { font-size: 1.5rem; }
  .footer-links { grid-template-columns: 1fr; }
}