/* ============================================
   启智 Keewise · 风格严格对齐 wuciyuan
   ============================================ */

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

:root {
  --blue: #165DFF;
  --blue-dark: #1249CC;
  --blue-soft: #E8F3FF;
  --orange: #FF7D00;
  --orange-soft: #FFF7E8;
  --green: #00B96B;
  --green-soft: #E8FFF3;
  --purple: #722ED1;
  --purple-soft: #F3E8FF;
  --cyan: #08979C;
  --cyan-soft: #E6FFFB;
  --dark: #1d1d1f;
  --gray: #86868b;
  --gray-light: #c8c8cc;
  --light: #f5f5f7;
  --light-2: #fafafc;
  --white: #fff;
  --line: #e5e5e5;
  --shadow-card: 0 12px 40px rgba(0,0,0,0.06);
  --shadow-hover: 0 16px 48px rgba(22, 93, 255, 0.12);
  --r-card: 20px;
  --r-md: 16px;
  --r-sm: 12px;
  --r-pill: 980px;
}

html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--dark);
  line-height: 1.6;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
em { font-style: normal; }

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

/* ============================================
   导航
   ============================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  transition: box-shadow 0.3s, background 0.3s;
}
.nav-scrolled {
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
  background: rgba(255,255,255,0.92);
}
.nav-container {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 56px;
}
.logo {
  display: inline-flex; align-items: baseline; gap: 8px;
}
.logo-mark {
  font-size: 20px; font-weight: 700; color: var(--dark);
  letter-spacing: -0.01em;
}
.logo-en {
  font-size: 12px; font-weight: 500; color: var(--blue);
  letter-spacing: 0.08em;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
}
.nav-links {
  display: flex; gap: 28px; list-style: none; align-items: center;
}
.nav-links a {
  font-size: 14px; color: var(--dark);
  transition: color 0.2s;
  position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--blue); }
.nav-links a.active::after {
  content: ''; position: absolute; bottom: -6px; left: 0; right: 0;
  height: 2px; background: var(--blue); border-radius: 2px;
}
.nav-links .nav-cta {
  background: var(--blue); color: var(--white);
  padding: 8px 18px; border-radius: var(--r-pill);
  font-weight: 500;
  transition: background 0.2s, transform 0.2s;
}
.nav-links .nav-cta:hover {
  background: var(--blue-dark); color: var(--white); transform: scale(1.02);
}
.nav-links .nav-cta.active::after { display: none; }

.menu-btn {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.menu-btn span { width: 20px; height: 2px; background: var(--dark); transition: 0.3s; }

/* ============================================
   Hero
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  background: linear-gradient(180deg, var(--light) 0%, var(--white) 100%);
  padding: 100px 24px 60px;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  z-index: 0;
  opacity: 0.5;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(22,93,255,0.08) 0%, transparent 40%),
    radial-gradient(circle at 80% 30%, rgba(255,125,0,0.06) 0%, transparent 40%),
    radial-gradient(circle at 50% 80%, rgba(114,46,209,0.05) 0%, transparent 50%);
}
.hero-bg::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(22,93,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22,93,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}
.hero-content { position: relative; z-index: 1; max-width: 880px; }
.hero-eyebrow {
  display: inline-block;
  font-size: 12px; font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--blue);
  padding: 6px 14px;
  background: var(--blue-soft);
  border-radius: var(--r-pill);
  margin-bottom: 24px;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
}
.hero h1 {
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 24px;
  color: var(--dark);
}
.hero h1 em {
  background: linear-gradient(120deg, var(--blue) 0%, var(--purple) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  position: relative;
}
.hero-sub {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--gray);
  line-height: 1.7;
  margin: 0 auto 36px;
  max-width: 680px;
}
.hero-pills {
  display: flex; justify-content: center; flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: 14px;
  color: var(--dark);
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
  transition: transform 0.2s, border-color 0.2s;
}
.pill i { color: var(--blue); }
.pill:hover { transform: translateY(-2px); border-color: var(--blue); }
.hero-cta {
  display: flex; justify-content: center; flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 48px;
}
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px;
  background: var(--blue); color: var(--white);
  border-radius: var(--r-pill);
  font-size: 16px; font-weight: 500;
  transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
  box-shadow: 0 8px 24px rgba(22,93,255,0.28);
}
.btn-primary:hover {
  transform: scale(1.02);
  background: var(--blue-dark);
  box-shadow: 0 12px 32px rgba(22,93,255,0.36);
}
.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px;
  background: var(--white); color: var(--dark);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: 16px; font-weight: 500;
  transition: transform 0.2s, border-color 0.2s, color 0.2s;
}
.btn-ghost:hover {
  border-color: var(--blue); color: var(--blue);
  transform: translateY(-2px);
}
.hero-trust {
  font-size: 14px; color: var(--gray);
}
.hero-trust strong { color: var(--dark); font-weight: 500; margin: 0 8px; }

.hero-scroll {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  z-index: 1;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  font-size: 12px; color: var(--gray);
  animation: bounce 2s ease-in-out infinite;
}
.hero-scroll i { font-size: 16px; }
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ============================================
   通用 Section
   ============================================ */
.section { padding: 100px 0; }
.section-tight { padding: 80px 0; }
.section-alt { background: var(--light); }

.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 64px;
}
.section-eyebrow {
  display: inline-block;
  font-size: 12px; font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--blue);
  padding: 6px 14px;
  background: var(--blue-soft);
  border-radius: var(--r-pill);
  margin-bottom: 20px;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--dark);
  margin-bottom: 16px;
}
.section-desc {
  font-size: 17px;
  color: var(--gray);
  line-height: 1.7;
}

.section-conclusion {
  margin-top: 56px;
  padding: 24px 32px;
  background: var(--white);
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  gap: 12px;
  font-size: 17px;
  color: var(--dark);
  text-align: center;
}
.section-alt .section-conclusion { background: var(--white); }
.section-conclusion i { color: var(--blue); font-size: 20px; }
.section-conclusion strong { color: var(--blue); font-weight: 600; }
.section-conclusion-warning i { color: var(--orange); }
.section-conclusion-warning strong { color: var(--orange); }

/* ============================================
   §2 范式跃迁
   ============================================ */
.era-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}
.era-card {
  background: var(--white);
  padding: 36px 28px;
  border-radius: var(--r-card);
  border: 1px solid var(--line);
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
}
.era-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.era-now {
  background: linear-gradient(180deg, #fff 0%, var(--blue-soft) 100%);
  border-color: var(--blue);
}
.era-tag {
  display: inline-block;
  font-size: 12px; font-weight: 500;
  letter-spacing: 0.1em;
  padding: 4px 12px;
  background: var(--light);
  color: var(--gray);
  border-radius: var(--r-pill);
  margin-bottom: 20px;
}
.era-tag-highlight {
  background: var(--blue); color: var(--white);
}
.era-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}
.era-desc {
  font-size: 14px;
  color: var(--blue);
  margin-bottom: 20px;
  font-weight: 500;
}
.era-card ul {
  margin-bottom: 24px;
  display: grid; gap: 8px;
}
.era-card li {
  font-size: 14px;
  color: var(--dark);
  padding-left: 18px;
  position: relative;
}
.era-card li::before {
  content: ''; position: absolute; left: 0; top: 9px;
  width: 6px; height: 6px;
  background: var(--blue); border-radius: 50%;
  opacity: 0.6;
}
.era-essence {
  padding-top: 20px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  color: var(--gray);
}
.era-essence::before {
  content: '本质  ';
  color: var(--gray-light);
  font-weight: 500;
}

.quote-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}
.quote-card {
  background: var(--white);
  padding: 28px 28px 24px;
  border-radius: var(--r-card);
  border-left: 3px solid var(--blue);
  box-shadow: 0 4px 16px rgba(0,0,0,0.03);
  position: relative;
}
.quote-card::before {
  content: '"';
  position: absolute;
  top: -10px; left: 20px;
  font-size: 64px;
  color: var(--blue-soft);
  font-family: Georgia, serif;
  line-height: 1;
  z-index: 0;
}
.quote-text {
  font-size: 15px;
  color: var(--dark);
  line-height: 1.7;
  position: relative; z-index: 1;
  margin-bottom: 16px;
}
.quote-text strong {
  color: var(--blue);
  font-size: 22px;
  font-weight: 700;
}
.quote-source {
  font-size: 13px;
  color: var(--gray);
  letter-spacing: 0.04em;
  font-weight: 500;
}

/* ============================================
   §3 痛点
   ============================================ */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pain-card {
  background: var(--white);
  padding: 32px 28px;
  border-radius: var(--r-card);
  border: 1px solid var(--line);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  position: relative;
}
.pain-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255,125,0,0.4);
}
.pain-num {
  font-size: 14px;
  font-weight: 600;
  color: var(--orange);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
}
.pain-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}
.pain-sub {
  font-size: 14px;
  color: var(--orange);
  margin-bottom: 18px;
  font-weight: 500;
}
.pain-detail {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.7;
}
.pain-detail strong { color: var(--dark); font-weight: 500; }

/* ============================================
   §4 能力地图
   ============================================ */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.cap-card {
  background: var(--white);
  padding: 32px 28px;
  border-radius: var(--r-card);
  border: 1px solid var(--line);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  display: flex; flex-direction: column;
  position: relative;
}
.cap-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: var(--blue);
}
.cap-card-highlight {
  background: linear-gradient(180deg, var(--white) 0%, var(--blue-soft) 100%);
  border-color: var(--blue);
}
.cap-icon {
  width: 56px; height: 56px;
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}
.cap-icon i { font-size: 22px; }
.cap-icon-blue { background: var(--blue-soft); color: var(--blue); }
.cap-icon-orange { background: var(--orange-soft); color: var(--orange); }
.cap-icon-dark { background: var(--dark); color: var(--white); }
.cap-icon-green { background: var(--green-soft); color: var(--green); }
.cap-icon-purple { background: var(--purple-soft); color: var(--purple); }
.cap-icon-cyan { background: var(--cyan-soft); color: var(--cyan); }

.cap-tag {
  font-size: 12px;
  color: var(--gray);
  letter-spacing: 0.1em;
  margin-bottom: 6px;
  font-weight: 500;
}
.cap-tag-highlight { color: var(--blue); font-weight: 600; }
.cap-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}
.cap-card > p {
  font-size: 14px;
  color: var(--gray);
  margin-bottom: 18px;
}
.cap-card ul {
  display: grid; gap: 6px;
  margin-bottom: 20px;
  flex: 1;
}
.cap-card li {
  font-size: 13px;
  color: var(--dark);
  padding-left: 16px;
  position: relative;
}
.cap-card li::before {
  content: '·';
  position: absolute; left: 4px; top: -2px;
  font-size: 18px;
  color: var(--blue);
  font-weight: 700;
}
.cap-link {
  font-size: 13px;
  color: var(--blue);
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: gap 0.2s;
}

/* ============================================
   §5 FAQ vs Agent
   ============================================ */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 60px 1fr;
  gap: 0;
  align-items: stretch;
  margin-bottom: 32px;
}
.compare-card {
  background: var(--white);
  border-radius: var(--r-card);
  padding: 36px 32px;
  border: 1px solid var(--line);
  display: flex; flex-direction: column;
}
.compare-card-faq {
  /* 同色 */
}
.compare-card-agent {
  background: linear-gradient(180deg, var(--white) 0%, var(--blue-soft) 100%);
  border-color: var(--blue);
  box-shadow: var(--shadow-hover);
}
.compare-head {
  margin-bottom: 24px;
}
.compare-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  padding: 4px 10px;
  background: var(--light);
  color: var(--gray);
  border-radius: var(--r-pill);
  margin-bottom: 10px;
}
.compare-label-highlight {
  background: var(--blue); color: var(--white);
}
.compare-head h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--dark);
}
.compare-dialog {
  background: var(--light);
  border-radius: var(--r-md);
  padding: 20px;
  margin-bottom: 24px;
  display: flex; flex-direction: column; gap: 10px;
  min-height: 200px;
}
.bubble {
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 14px;
  max-width: 85%;
  line-height: 1.5;
}
.bubble-user {
  background: var(--white);
  color: var(--dark);
  align-self: flex-end;
  border: 1px solid var(--line);
}
.bubble-bot {
  background: var(--white);
  color: var(--gray);
  align-self: flex-start;
  border-left: 3px solid var(--gray-light);
}
.bubble-agent {
  background: var(--blue);
  color: var(--white);
  align-self: flex-start;
  font-weight: 500;
}
.agent-flow {
  display: flex; align-items: center; flex-wrap: wrap;
  gap: 6px;
  padding: 12px;
  background: var(--white);
  border-radius: var(--r-md);
  border: 1px dashed var(--blue);
  align-self: flex-start;
  max-width: 100%;
}
.flow-step {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 10px;
  background: var(--blue-soft);
  color: var(--blue);
  border-radius: var(--r-pill);
  font-size: 12px;
  font-weight: 500;
}
.flow-step i { font-size: 11px; }
.flow-arrow { color: var(--blue); font-size: 12px; }

.compare-meta { display: grid; gap: 10px; flex: 1; }
.meta-row {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
}
.meta-row:last-child { border-bottom: none; }
.meta-key { color: var(--gray); }
.meta-val { color: var(--dark); font-weight: 500; }
.meta-val-yes { color: var(--green); }
.meta-val-yes::before { content: '✓ '; }
.meta-val-no { color: var(--gray-light); }
.meta-val-no::before { content: '✗ '; }

.compare-vs {
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700;
  color: var(--gray-light);
  letter-spacing: 0.1em;
  font-family: -apple-system, "Inter", sans-serif;
}

/* ============================================
   §6 能力深度解读
   ============================================ */
.cap-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 100px;
}
.cap-detail:last-child { margin-bottom: 0; }
.cap-detail-alt .cap-detail-text { order: 2; }
.cap-detail-alt .cap-detail-visual { order: 1; }

.cap-detail-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--blue);
  padding: 4px 12px;
  background: var(--blue-soft);
  border-radius: var(--r-pill);
  margin-bottom: 18px;
}
.cap-detail-tag-highlight {
  background: var(--dark); color: var(--white);
}
.cap-detail-text h3 {
  font-size: 30px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.cap-detail-hook {
  font-size: 16px;
  color: var(--gray);
  line-height: 1.8;
  margin-bottom: 24px;
  padding: 20px 24px;
  background: var(--light);
  border-radius: var(--r-md);
  border-left: 3px solid var(--blue);
  position: relative;
}
.cap-detail-hook i {
  color: var(--blue);
  margin-right: 6px;
  opacity: 0.5;
}
.cap-detail-hook strong { color: var(--dark); font-weight: 600; }

.cap-detail-list {
  display: grid; gap: 12px;
  margin-bottom: 28px;
}
.cap-detail-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 15px;
  color: var(--dark);
  line-height: 1.6;
}
.cap-detail-list i {
  color: var(--blue);
  margin-top: 4px;
  flex-shrink: 0;
}
.cap-detail-list strong { color: var(--dark); font-weight: 600; }

.cap-detail-impact {
  padding: 16px 22px;
  background: var(--blue-soft);
  border-radius: var(--r-md);
  font-size: 14px;
  color: var(--dark);
  display: flex; align-items: center; flex-wrap: wrap;
  gap: 4px;
}
.cap-detail-impact strong { color: var(--blue); font-weight: 600; }
.cap-detail-impact-orange { background: var(--orange-soft); }
.cap-detail-impact-orange strong { color: var(--orange); }
.cap-detail-impact-dark { background: var(--dark); color: var(--white); }
.cap-detail-impact-dark strong { color: #ffd56a; }

.cap-detail-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.cap-stat {
  text-align: center;
  padding: 18px 12px;
  background: var(--light);
  border-radius: var(--r-md);
}
.cap-stat strong {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 4px;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
  letter-spacing: -0.02em;
}
.cap-stat span {
  font-size: 13px;
  color: var(--gray);
}

/* ---- 视觉模块通用 ---- */
.cap-detail-visual > div {
  background: var(--white);
  border-radius: var(--r-card);
  padding: 24px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--line);
}

/* 对话窗 */
.chat-window { padding: 0; overflow: hidden; }
.chat-head {
  display: flex; align-items: center; gap: 6px;
  padding: 12px 18px;
  background: var(--light);
  border-bottom: 1px solid var(--line);
  margin: -24px -24px 16px;
}
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-red { background: #ff5f57; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #28ca42; }
.chat-title { margin-left: 8px; font-size: 13px; color: var(--gray); }
.chat-body { display: flex; flex-direction: column; gap: 10px; }
.chat-msg {
  max-width: 80%;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 14px;
  line-height: 1.6;
}
.chat-msg-user {
  background: var(--blue);
  color: var(--white);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}
.chat-msg-bot {
  background: var(--light);
  color: var(--dark);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}
.chat-msg strong { color: inherit; font-weight: 600; }

/* 知识面板 */
.knowledge-panel { padding: 0; }
.kp-head {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 18px;
  background: linear-gradient(90deg, var(--orange-soft) 0%, var(--white) 100%);
  border-bottom: 1px solid var(--line);
  margin: -24px -24px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--orange);
}
.kp-body { display: grid; gap: 10px; }
.kp-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 14px;
  background: var(--light);
  border-radius: var(--r-md);
  font-size: 13px;
}
.kp-source { display: flex; align-items: center; gap: 8px; color: var(--dark); }
.kp-source i { color: var(--gray); }
.kp-status {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 12px;
  padding: 3px 8px;
  border-radius: var(--r-pill);
}
.kp-status-updated { background: var(--green-soft); color: var(--green); }
.kp-status-mining { background: var(--orange-soft); color: var(--orange); }
.kp-row-insight {
  flex-direction: column;
  align-items: stretch;
  background: var(--orange-soft);
  padding: 14px;
}
.kp-insight-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--orange);
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}
.kp-insight-text { font-size: 13px; color: var(--dark); line-height: 1.5; }

/* Agent 流程面板 */
.agent-flow-panel { padding: 0; background: linear-gradient(180deg, #1d1d1f 0%, #2a2a2e 100%) !important; color: var(--white); border-color: var(--dark) !important; }
.af-head {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin: -24px -24px 16px;
  font-size: 13px;
  color: #ffd56a;
  font-weight: 500;
}
.af-body {
  display: flex; flex-direction: column;
  gap: 6px;
}
.af-step {
  padding: 12px 14px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--r-md);
  display: flex; align-items: flex-start; gap: 12px;
  font-size: 13px;
  line-height: 1.5;
  border-left: 3px solid;
}
.af-step-perceive { border-color: #5b8def; }
.af-step-think { border-color: #ffd56a; }
.af-step-act { border-color: #34d399; }
.af-step-feedback { border-color: #c084fc; }
.af-step-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #ffd56a;
  padding: 2px 8px;
  background: rgba(255,213,106,0.15);
  border-radius: var(--r-pill);
  flex-shrink: 0;
  margin-top: 2px;
}
.af-step-text { flex: 1; color: rgba(255,255,255,0.92); }
.af-step-text strong { color: #ffd56a; }
.af-tool {
  display: inline-block;
  font-family: "SF Mono", "Monaco", "Consolas", monospace;
  font-size: 11px;
  padding: 2px 8px;
  margin: 2px 4px 2px 0;
  background: rgba(52, 211, 153, 0.15);
  color: #34d399;
  border-radius: 6px;
}
.af-arrow {
  text-align: center;
  color: rgba(255,255,255,0.3);
  font-size: 14px;
}

/* 协同面板 */
.collab-panel { padding: 0; }
.collab-head {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 18px;
  background: linear-gradient(90deg, var(--green-soft) 0%, var(--white) 100%);
  border-bottom: 1px solid var(--line);
  margin: -24px -24px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--green);
}
.collab-body { display: flex; flex-direction: column; gap: 12px; }
.collab-user {
  background: var(--light);
  padding: 10px 14px;
  border-radius: var(--r-md);
  font-size: 13px;
  color: var(--dark);
}
.collab-ai {
  padding: 12px 14px;
  background: var(--blue-soft);
  border-radius: var(--r-md);
}
.collab-ai-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--blue);
  margin-bottom: 8px;
  letter-spacing: 0.1em;
}
.collab-ai-options { display: grid; gap: 6px; }
.collab-option {
  font-size: 13px;
  color: var(--dark);
  padding: 6px 10px;
  background: var(--white);
  border-radius: 8px;
  line-height: 1.5;
}
.collab-option strong { color: var(--blue); font-weight: 600; }
.collab-action {
  display: flex; gap: 8px;
  margin-top: 4px;
}
.collab-btn {
  flex: 1;
  padding: 8px 12px;
  border-radius: var(--r-pill);
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--dark);
  cursor: pointer;
  transition: all 0.2s;
}
.collab-btn-primary {
  background: var(--blue); color: var(--white); border-color: var(--blue);
}

/* 语音面板 */
.voice-panel { padding: 0; }
.voice-head {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 18px;
  background: linear-gradient(90deg, var(--purple-soft) 0%, var(--white) 100%);
  border-bottom: 1px solid var(--line);
  margin: -24px -24px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--purple);
}
.voice-duration {
  margin-left: auto;
  font-family: "SF Mono", "Monaco", monospace;
  color: var(--green);
  font-weight: 600;
  font-size: 12px;
}
.voice-body { display: flex; flex-direction: column; gap: 10px; }
.voice-msg {
  display: flex; align-items: flex-start; gap: 8px;
  padding: 10px 14px;
  border-radius: var(--r-md);
  font-size: 13px;
  line-height: 1.5;
}
.voice-msg-user {
  background: var(--light);
  color: var(--dark);
}
.voice-msg-bot {
  background: var(--purple-soft);
  color: var(--dark);
}
.voice-msg i { color: var(--purple); margin-top: 2px; }
.voice-thinking {
  display: flex; align-items: center; flex-wrap: wrap; gap: 6px;
  padding: 8px 12px;
  background: var(--purple-soft);
  border-radius: var(--r-md);
  font-size: 11px;
  color: var(--purple);
}
.voice-tag {
  padding: 2px 8px;
  background: var(--white);
  border-radius: var(--r-pill);
  font-size: 11px;
  font-weight: 500;
}
.voice-action {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  background: var(--white);
  border: 1px dashed var(--purple);
  border-radius: var(--r-md);
  font-size: 12px;
  color: var(--dark);
}
.voice-action i { color: var(--purple); }

/* 数据运营面板 */
.data-panel { padding: 0; }
.data-head {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 18px;
  background: linear-gradient(90deg, var(--cyan-soft) 0%, var(--white) 100%);
  border-bottom: 1px solid var(--line);
  margin: -24px -24px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--cyan);
}
.data-alert {
  margin-left: auto;
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 11px;
  padding: 3px 8px;
  background: var(--orange-soft);
  color: var(--orange);
  border-radius: var(--r-pill);
  font-weight: 500;
}
.data-body { display: flex; flex-direction: column; gap: 12px; }
.data-chart {
  display: flex; align-items: flex-end;
  gap: 8px;
  height: 120px;
  padding: 12px;
  background: var(--light);
  border-radius: var(--r-md);
}
.data-bar {
  flex: 1;
  background: linear-gradient(180deg, var(--cyan) 0%, #4fd4d8 100%);
  border-radius: 4px 4px 0 0;
  opacity: 0.6;
  transition: opacity 0.3s;
}
.data-bar-alert {
  background: linear-gradient(180deg, var(--orange) 0%, #ffa940 100%);
  opacity: 1;
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.65; }
}
.data-insight {
  padding: 12px 14px;
  background: var(--orange-soft);
  border-radius: var(--r-md);
  border-left: 3px solid var(--orange);
}
.data-insight-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--orange);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}
.data-insight-text {
  font-size: 13px;
  color: var(--dark);
  line-height: 1.5;
}
.data-insight-text strong { color: var(--orange); }
.data-action {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px;
  color: var(--green);
  font-weight: 500;
}

/* ============================================
   内页 Page Header（参考 wuciyuan product-service.html）
   ============================================ */
.page-header {
  padding: 140px 24px 70px;
  background: linear-gradient(180deg, var(--light) 0%, var(--white) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-header-bg {
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 18% 30%, rgba(22,93,255,0.08) 0%, transparent 38%),
    radial-gradient(circle at 82% 20%, rgba(255,125,0,0.06) 0%, transparent 40%),
    radial-gradient(circle at 50% 90%, rgba(114,46,209,0.04) 0%, transparent 50%);
  pointer-events: none;
}
.page-header-bg::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(22,93,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22,93,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}
.page-header > .container { position: relative; z-index: 1; max-width: 880px; }
.page-header .tag {
  display: inline-block;
  padding: 7px 20px;
  background: var(--blue);
  color: var(--white);
  border-radius: var(--r-pill);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: 24px;
}
.page-header h1 {
  font-size: clamp(40px, 6vw, 60px);
  font-weight: 700;
  color: var(--dark);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  line-height: 1.15;
}
.page-header p {
  font-size: clamp(17px, 2vw, 22px);
  color: var(--gray);
  margin-bottom: 32px;
  line-height: 1.5;
}
.page-header-pills {
  display: flex; justify-content: center; flex-wrap: wrap;
  gap: 12px;
}

/* 产品概览 */
.product-overview {
  padding: 70px 0 100px;
  background: var(--white);
}
.overview-card {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  padding: 48px 56px;
  background: var(--light);
  border-radius: var(--r-card);
  border: 1px solid var(--line);
}
.overview-desc {
  font-size: 17px;
  color: var(--dark);
  line-height: 1.85;
  margin-bottom: 32px;
  text-align: justify;
}
.overview-desc strong { color: var(--blue); font-weight: 600; }
.overview-cta {
  display: flex; justify-content: center; flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}
.overview-trust {
  font-size: 14px;
  color: var(--gray);
  padding-top: 24px;
  border-top: 1px dashed var(--line);
}
.overview-trust strong { color: var(--dark); font-weight: 500; margin: 0 8px; }

/* ============================================
   §9 增强版可视化指标表
   ============================================ */
.metrics-table {
  background: var(--white);
  border-radius: var(--r-card);
  padding: 6px;
  border: 1px solid var(--line);
  box-shadow: 0 8px 30px rgba(0,0,0,0.04);
  overflow: hidden;
}
.metrics-row {
  display: grid;
  grid-template-columns: 2.4fr 1fr 1fr 2.4fr 1fr;
  gap: 20px;
  align-items: center;
  padding: 22px 28px;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s;
}
.metrics-row:last-child { border-bottom: none; }
.metrics-row:not(.metrics-row-head):hover {
  background: var(--light);
}
.metrics-row-head {
  background: linear-gradient(90deg, var(--light) 0%, var(--white) 100%);
  padding: 14px 28px;
}
.metrics-row-head .metrics-cell {
  font-size: 11px;
  font-weight: 600;
  color: var(--gray);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.metrics-cell-name {
  display: flex; align-items: center; gap: 14px;
}
.metrics-cell-name > i {
  width: 40px; height: 40px;
  border-radius: var(--r-md);
  background: var(--blue-soft); color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.metrics-cell-name .name-text {
  display: flex; flex-direction: column;
}
.metrics-cell-name strong {
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 3px;
  line-height: 1.3;
}
.metrics-cell-name .name-text > span {
  font-size: 12px;
  color: var(--gray);
  line-height: 1.4;
}
.metrics-cell-before {
  font-size: 14px;
  color: var(--gray);
  text-align: center;
}
.metrics-cell-after {
  font-size: 22px;
  font-weight: 700;
  color: var(--blue);
  text-align: center;
  letter-spacing: -0.02em;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
}
.metrics-cell-bar {
  position: relative;
}
.bar-track {
  position: relative;
  height: 28px;
  background: var(--light);
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
}
.bar-track .bar-before {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  background: linear-gradient(90deg, #d8d8dd 0%, #c5c5cc 100%);
  opacity: 0.55;
  border-radius: 14px;
}
.bar-track .bar-after {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  background: linear-gradient(90deg, var(--blue) 0%, #4d8aff 100%);
  border-radius: 14px;
  box-shadow: 0 0 18px rgba(22,93,255,0.35);
}
.metrics-cell-trend {
  text-align: right;
}

.metrics-legend {
  display: flex; justify-content: center; flex-wrap: wrap;
  gap: 24px;
  margin-top: 20px;
  font-size: 12px;
  color: var(--gray);
}
.legend-item {
  display: inline-flex; align-items: center; gap: 8px;
}
.legend-swatch {
  display: inline-block;
  width: 20px; height: 8px;
  border-radius: 4px;
}
.legend-swatch-before { background: #c5c5cc; opacity: 0.7; }
.legend-swatch-after { background: linear-gradient(90deg, var(--blue) 0%, #4d8aff 100%); }

/* ============================================
   §7 业务场景片段
   ============================================ */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.scenario-card {
  background: var(--white);
  border-radius: var(--r-card);
  padding: 32px 28px;
  border: 1px solid var(--line);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  display: flex; flex-direction: column;
}
.scenario-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--blue);
}
.scenario-head {
  display: flex; align-items: center; gap: 16px;
  margin-bottom: 20px;
}
.scenario-icon {
  width: 56px; height: 56px;
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.scenario-icon-orange { background: var(--orange-soft); color: var(--orange); }
.scenario-icon-blue { background: var(--blue-soft); color: var(--blue); }
.scenario-icon-purple { background: var(--purple-soft); color: var(--purple); }
.scenario-icon-cyan { background: var(--cyan-soft); color: var(--cyan); }
.scenario-industry {
  display: block;
  font-size: 12px;
  color: var(--gray);
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}
.scenario-head h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.4;
}
.scenario-bg {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.7;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px dashed var(--line);
}
.scenario-bg strong { color: var(--dark); font-weight: 500; }
.scenario-action { flex: 1; margin-bottom: 20px; }
.action-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--blue);
  margin-bottom: 10px;
}
.scenario-action ul { display: grid; gap: 6px; }
.scenario-action li {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 13px;
  color: var(--dark);
  line-height: 1.6;
}
.scenario-action i { color: var(--blue); margin-top: 4px; font-size: 12px; }
.scenario-result {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px dashed var(--line);
}
.result-item {
  text-align: center;
  padding: 12px;
  background: var(--light);
  border-radius: var(--r-md);
}
.result-item strong {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: -0.02em;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
  margin-bottom: 2px;
}
.result-item span { font-size: 12px; color: var(--gray); }

/* ============================================
   §8 平台架构
   ============================================ */
.arch-stack {
  display: flex; flex-direction: column;
  gap: 12px;
}
.arch-layer {
  background: var(--white);
  border-radius: var(--r-card);
  padding: 24px 28px;
  border: 1px solid var(--line);
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 32px;
  align-items: center;
  transition: transform 0.3s, box-shadow 0.3s;
}
.arch-layer:hover {
  transform: translateX(4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.05);
}
.arch-layer-access { border-left: 4px solid var(--blue); }
.arch-layer-app { border-left: 4px solid var(--purple); }
.arch-layer-capability { border-left: 4px solid var(--orange); }
.arch-layer-platform { border-left: 4px solid var(--green); }
.arch-layer-infra { border-left: 4px solid var(--cyan); }
.arch-layer-head {
  display: flex; align-items: center; gap: 12px;
}
.arch-layer-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--gray-light);
  letter-spacing: 0.05em;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
}
.arch-layer-head h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 2px;
}
.arch-layer-head p { font-size: 12px; color: var(--gray); }
.arch-chips {
  display: flex; flex-wrap: wrap;
  gap: 8px;
}
.chip {
  display: inline-block;
  font-size: 12px;
  padding: 6px 12px;
  background: var(--light);
  color: var(--dark);
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  transition: all 0.2s;
}
.chip:hover {
  background: var(--blue-soft);
  color: var(--blue);
  border-color: var(--blue);
}
.chip-strong {
  background: var(--blue-soft);
  color: var(--blue);
  font-weight: 500;
  border-color: transparent;
}
.chip-security {
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.9);
  border-color: rgba(255,255,255,0.15);
}
.arch-security {
  margin-top: 8px;
  background: linear-gradient(120deg, #1d1d1f 0%, #2a2a2e 100%);
  border-radius: var(--r-card);
  padding: 24px 28px;
  color: var(--white);
}
.arch-security-head {
  display: flex; align-items: center; gap: 8px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  color: #ffd56a;
}
.arch-security-head i { font-size: 16px; }

/* ============================================
   §9 量化效果
   ============================================ */
.metric-hero-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.metric-hero-card {
  background: var(--white);
  border-radius: var(--r-card);
  padding: 32px 28px;
  border: 1px solid var(--line);
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}
.metric-hero-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.metric-hero-label {
  font-size: 13px;
  color: var(--gray);
  margin-bottom: 16px;
}
.metric-hero-row {
  display: flex; align-items: baseline; justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
}
.metric-before {
  font-size: 18px;
  color: var(--gray-light);
  text-decoration: line-through;
  font-weight: 500;
}
.metric-hero-row i { color: var(--blue); font-size: 14px; }
.metric-after {
  font-size: 36px;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: -0.02em;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
}
.metric-hero-bar {
  position: relative;
  height: 6px;
  background: var(--light);
  border-radius: 3px;
  margin-bottom: 14px;
  overflow: hidden;
}
.bar-before {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  background: var(--gray-light);
  opacity: 0.4;
  border-radius: 3px;
}
.bar-after {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  background: linear-gradient(90deg, var(--blue) 0%, #4d8aff 100%);
  border-radius: 3px;
  box-shadow: 0 0 12px rgba(22,93,255,0.3);
}
.metric-hero-tag { font-size: 12px; color: var(--gray); line-height: 1.5; }

.compare-table-wrap {
  background: var(--white);
  border-radius: var(--r-card);
  padding: 12px;
  border: 1px solid var(--line);
  overflow: hidden;
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
}
.compare-table th, .compare-table td {
  padding: 18px 24px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--line);
}
.compare-table th {
  background: var(--light);
  font-weight: 600;
  color: var(--gray);
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr:hover { background: var(--light); }
.compare-table td:nth-child(2) { color: var(--gray); }
.compare-table td:nth-child(3) strong { color: var(--blue); font-size: 16px; }
.compare-table td:nth-child(4) { text-align: right; }
.trend {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  font-size: 12px;
  font-weight: 600;
}
.trend-up { background: var(--green-soft); color: var(--green); }
.trend-down { background: var(--blue-soft); color: var(--blue); }

/* ============================================
   §10 ROI 测算
   ============================================ */
.roi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}
.roi-card {
  background: var(--white);
  border-radius: var(--r-card);
  padding: 28px 24px;
  border: 1px solid var(--line);
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.roi-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--blue);
}
.roi-icon {
  width: 48px; height: 48px;
  margin: 0 auto 16px;
  border-radius: var(--r-md);
  background: var(--blue-soft);
  color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
}
.roi-value {
  font-size: 36px;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: -0.02em;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
  margin-bottom: 6px;
  line-height: 1;
}
.roi-value span {
  font-size: 16px;
  font-weight: 500;
  color: var(--gray);
  margin-left: 2px;
}
.roi-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
}
.roi-detail { font-size: 12px; color: var(--gray); line-height: 1.6; }

.roi-payback {
  background: linear-gradient(120deg, var(--blue) 0%, #4d8aff 100%);
  border-radius: var(--r-card);
  padding: 36px 32px;
  text-align: center;
  color: var(--white);
  margin-bottom: 32px;
  box-shadow: 0 20px 40px rgba(22,93,255,0.25);
}
.payback-label {
  font-size: 13px;
  letter-spacing: 0.1em;
  opacity: 0.9;
  margin-bottom: 8px;
}
.payback-value {
  font-size: clamp(48px, 8vw, 72px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 12px;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
}
.payback-value span {
  font-size: 24px;
  font-weight: 500;
  margin-left: 4px;
}
.payback-desc { font-size: 14px; opacity: 0.95; }
.payback-desc strong { font-weight: 600; }

.roi-intangible {
  background: var(--light);
  border-radius: var(--r-card);
  padding: 28px 32px;
  margin-bottom: 32px;
}
.intangible-head {
  display: flex; align-items: center; gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--orange);
  margin-bottom: 18px;
}
.intangible-head i { font-size: 16px; }
.intangible-tags {
  display: flex; flex-wrap: wrap;
  gap: 10px;
}
.intangible-tag {
  display: inline-block;
  padding: 8px 16px;
  background: var(--white);
  border-radius: var(--r-pill);
  font-size: 13px;
  color: var(--dark);
  border: 1px solid var(--line);
}

/* ============================================
   §11 交付保障
   ============================================ */
.delivery-paths {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}
.path-card {
  background: var(--white);
  border-radius: var(--r-card);
  padding: 36px 32px;
  border: 1px solid var(--line);
  transition: transform 0.3s, box-shadow 0.3s;
}
.path-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.path-card-primary {
  background: linear-gradient(180deg, var(--white) 0%, var(--blue-soft) 100%);
  border-color: var(--blue);
}
.path-head {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.path-icon {
  width: 44px; height: 44px;
  border-radius: var(--r-md);
  background: var(--blue-soft);
  color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.path-tag {
  font-size: 11px;
  padding: 4px 10px;
  background: var(--light);
  color: var(--gray);
  border-radius: var(--r-pill);
  font-weight: 600;
  letter-spacing: 0.1em;
}
.path-tag-highlight {
  background: var(--blue);
  color: var(--white);
}
.path-head h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
  flex-basis: 100%;
  margin-top: 4px;
}
.path-steps {
  display: flex; flex-direction: column;
  gap: 4px;
  margin-bottom: 24px;
}
.path-step {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 18px;
  background: var(--light);
  border-radius: var(--r-md);
}
.path-card-primary .path-step { background: var(--white); }
.path-step-num {
  font-size: 22px;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: -0.02em;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
  min-width: 60px;
}
.path-step-text {
  font-size: 14px;
  color: var(--dark);
  font-weight: 500;
}
.path-arrow { text-align: center; color: var(--gray-light); }
.path-fit { font-size: 13px; color: var(--gray); line-height: 1.6; }

.promise-band {
  background: var(--dark);
  color: var(--white);
  border-radius: var(--r-card);
  padding: 32px;
  margin-bottom: 32px;
}
.promise-head {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 24px;
}
.promise-head i { color: #ffd56a; font-size: 18px; }
.promise-head h3 { font-size: 18px; font-weight: 700; }
.promise-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 16px;
  align-items: center;
}
.promise-item {
  text-align: center;
  padding: 16px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--r-md);
}
.promise-item-highlight { background: rgba(255,213,106,0.12); }
.promise-num {
  font-size: 13px;
  color: #ffd56a;
  margin-bottom: 6px;
  letter-spacing: 0.05em;
  font-weight: 600;
}
.promise-text {
  font-size: 14px;
  color: rgba(255,255,255,0.92);
}
.promise-text strong {
  display: block;
  font-size: 22px;
  color: var(--white);
  font-weight: 700;
  margin-top: 4px;
}
.promise-divider {
  width: 1px;
  height: 60px;
  background: rgba(255,255,255,0.15);
}

.team-grid {
  background: var(--white);
  border-radius: var(--r-card);
  padding: 36px 32px;
  border: 1px solid var(--line);
}
.team-head { text-align: center; margin-bottom: 28px; }
.team-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--dark);
  letter-spacing: 0.05em;
}
.team-roles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.team-role {
  text-align: center;
  padding: 20px 12px;
  background: var(--light);
  border-radius: var(--r-md);
}
.team-role-icon {
  width: 44px; height: 44px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: var(--white);
  color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.team-role strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 4px;
}
.team-role span { font-size: 12px; color: var(--gray); line-height: 1.5; }

/* ============================================
   §12 完整 CTA
   ============================================ */
.cta-final {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 56px;
  align-items: center;
  max-width: 1080px;
  margin: 0 auto;
}
.cta-final-text .section-eyebrow { margin-bottom: 16px; }
.cta-final-text h2 {
  font-size: clamp(32px, 4.5vw, 44px);
  font-weight: 700;
  color: var(--dark);
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin-bottom: 20px;
}
.cta-final-desc {
  font-size: 16px;
  color: var(--gray);
  line-height: 1.8;
  margin-bottom: 28px;
}
.cta-final-actions {
  display: flex; flex-wrap: wrap; gap: 14px;
  margin-bottom: 28px;
}
.cta-final-card {
  background: var(--white);
  border-radius: var(--r-card);
  padding: 32px 28px;
  box-shadow: 0 20px 60px rgba(22,93,255,0.10);
  border: 1px solid var(--line);
  text-align: center;
}
.qr-placeholder {
  width: 220px; height: 220px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--light) 0%, var(--blue-soft) 100%);
  border-radius: var(--r-md);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 8px;
  color: var(--blue);
}
.qr-placeholder i {
  font-size: 120px;
  opacity: 0.7;
}
.qr-placeholder span {
  font-size: 13px;
  color: var(--dark);
  font-weight: 500;
}
.cta-contact {
  display: flex; flex-direction: column;
  gap: 10px;
  text-align: left;
}
.contact-row {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px;
  color: var(--gray);
}
.contact-row i { color: var(--blue); width: 16px; }

/* ============================================
   进度提示 & CTA
   ============================================ */
.progress-band {
  padding: 24px 0;
  background: var(--dark);
  color: var(--white);
}
.progress-note {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,0.85);
  text-align: center;
}
.progress-note i { color: #ffd56a; font-size: 16px; }
.progress-note strong { color: var(--white); font-weight: 500; margin: 0 4px; }

.cta-section {
  background: linear-gradient(180deg, var(--white) 0%, var(--light) 100%);
}
.cta-card {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  padding: 56px 40px;
  background: var(--white);
  border-radius: var(--r-card);
  box-shadow: 0 20px 60px rgba(22,93,255,0.10);
  border: 1px solid var(--line);
}
.cta-card .section-eyebrow { margin-bottom: 16px; }
.cta-card h2 {
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}
.cta-card .section-desc {
  margin-bottom: 32px;
  font-size: 16px;
}
.cta-actions {
  display: flex; justify-content: center; flex-wrap: wrap; gap: 14px;
  margin-bottom: 28px;
}
.cta-trust {
  display: flex; justify-content: center; flex-wrap: wrap; gap: 20px;
  font-size: 13px;
  color: var(--gray);
  padding-top: 24px;
  border-top: 1px dashed var(--line);
}
.cta-trust span { display: inline-flex; align-items: center; gap: 6px; }
.cta-trust i { color: var(--blue); }

/* ============================================
   页脚
   ============================================ */
.footer {
  background: var(--dark);
  color: var(--white);
  padding: 60px 0 40px;
  text-align: center;
}
.footer-brand {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  margin-bottom: 20px;
}
.logo-mark-light { color: var(--white); font-size: 24px; }
.logo-en-light { color: var(--blue); font-size: 13px; letter-spacing: 0.08em; }
.footer-tagline {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-top: 8px;
}
.footer-copy {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  opacity: 0.8;
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
  .era-grid, .quote-grid, .pain-grid, .cap-grid { grid-template-columns: repeat(2, 1fr); }
  .compare-grid { grid-template-columns: 1fr; gap: 16px; }
  .compare-vs { padding: 8px 0; }
  .cap-detail { grid-template-columns: 1fr; gap: 32px; }
  .cap-detail-alt .cap-detail-text { order: 1; }
  .cap-detail-alt .cap-detail-visual { order: 2; }
}

@media (max-width: 768px) {
  .menu-btn { display: flex; }
  .nav-links {
    position: absolute; top: 56px; left: 0; right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 20px 24px;
    gap: 16px;
    display: none;
    border-bottom: 1px solid var(--line);
  }
  .nav-links.active { display: flex; }
  .nav-links .nav-cta { text-align: center; }

  .section { padding: 60px 0; }
  .section-tight { padding: 48px 0; }
  .section-head { margin-bottom: 40px; }

  .era-grid, .quote-grid, .pain-grid, .cap-grid { grid-template-columns: 1fr; }
  .cap-detail { gap: 28px; margin-bottom: 64px; }
  .cap-detail-text h3 { font-size: 24px; }

  .hero { padding: 100px 20px 60px; }
  .hero-cta { flex-direction: column; }
  .hero-cta a { width: 100%; justify-content: center; }
  .hero-scroll { display: none; }

  .cap-detail-stats { grid-template-columns: 1fr; }

  .section-conclusion { padding: 18px 20px; font-size: 15px; }
}


/* ===== Nav dropdown (产品中心二级菜单) ===== */
.nav-links li.has-dropdown { position: relative; }
.nav-links li.has-dropdown > a { padding-right: 18px; position: relative; }
.nav-links li.has-dropdown > a::after {
  content: '\f107';
  font-family: FontAwesome;
  position: absolute;
  right: 0; top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  opacity: 0.55;
  transition: transform 0.2s, opacity 0.2s;
}
.nav-links li.has-dropdown:hover > a::after {
  transform: translateY(-50%) rotate(180deg);
  opacity: 1;
}
.dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #ffffff;
  min-width: 240px;
  list-style: none;
  padding: 8px 0;
  margin: 0;
  border-radius: 12px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.10);
  border: 1px solid rgba(0,0,0,0.06);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  z-index: 200;
}
.dropdown::before {
  content: '';
  position: absolute;
  top: -10px; left: 0; right: 0; height: 10px;
}
.dropdown li { padding: 0; }
.dropdown a {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  color: #1d1d1f;
  transition: background 0.15s, color 0.15s;
}
.dropdown a:hover {
  background: #f5f5f7;
  color: #165DFF;
}
.nav-links li.has-dropdown:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
@media (max-width: 768px) {
  .dropdown {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: none;
    background: rgba(0,0,0,0.03);
    margin: 8px 0 4px;
    border-radius: 8px;
    min-width: 0;
  }
  .dropdown::before { display: none; }
  .nav-links li.has-dropdown > a::after { display: none; }
}

/* ===== QR placeholder image (replaces fa-icon) ===== */
.qr-placeholder img {
  width: 180px;
  height: 180px;
  object-fit: contain;
  background: #fff;
  border-radius: 8px;
  padding: 8px;
  margin-bottom: 6px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}