/* ============================================
   星治 STAR · 风格严格对齐 wuciyuan / zhiku-landing
   ============================================ */

* { 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;
  --red: #CF1322;
  --red-soft: #FFF1F0;
  --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（同 zhiku-landing）
   ============================================ */
.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;
}
.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; }

/* ============================================
   内页 Page Header
   ============================================ */
.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(8,151,156,0.06) 0%, transparent 40%),
    radial-gradient(circle at 50% 90%, rgba(0,185,107,0.04) 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;
}
.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); }

/* 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;
}
.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);
}
.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; }

/* ============================================
   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;
}
.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;
}
.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;
}

/* 客户规模背书 */
.scale-band {
  background: linear-gradient(120deg, #1d1d1f 0%, #2a2a2e 100%);
  border-radius: var(--r-card);
  padding: 36px 32px;
  color: var(--white);
  margin-bottom: 32px;
}
.scale-head {
  display: flex; align-items: center; gap: 8px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 24px;
  color: #ffd56a;
}
.scale-head i { font-size: 16px; }
.scale-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.scale-item {
  text-align: center;
  padding: 16px 12px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--r-md);
}
.scale-item-warning { background: rgba(255,213,106,0.12); }
.scale-item strong {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
  margin-bottom: 4px;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
}
.scale-item span {
  font-size: 12px;
  color: rgba(255,255,255,0.7);
}
.scale-item-warning strong { color: #ffd56a; }

/* ============================================
   §3 痛点
   ============================================ */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.pain-card {
  background: var(--white);
  padding: 32px 32px 24px;
  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: 12px;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
}
.pain-card h3 {
  font-size: 22px;
  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: 1.75;
  margin-bottom: 20px;
}
.pain-detail strong { color: var(--dark); font-weight: 500; }

.pain-metric {
  display: inline-flex; align-items: baseline; gap: 8px;
  padding: 10px 16px;
  background: var(--orange-soft);
  border-radius: var(--r-md);
  border-left: 3px solid var(--orange);
}
.pain-metric strong {
  font-size: 22px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: -0.02em;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
}
.pain-metric span {
  font-size: 12px;
  color: var(--orange);
}
.pain-metric-warning { background: var(--red-soft); border-color: var(--red); }
.pain-metric-warning strong, .pain-metric-warning span { color: var(--red); }

/* ============================================
   §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;
}
.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-green { background: var(--green-soft); color: var(--green); }
.cap-icon-dark { background: var(--dark); color: var(--white); }
.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;
}

/* ============================================
   §5 范式对比
   ============================================ */
.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-traditional {
  background: linear-gradient(180deg, var(--white) 0%, var(--red-soft) 100%);
}
.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(--red-soft);
  color: var(--red);
  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: 4px;
}
.flow-step {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px;
  background: var(--white);
  border-radius: var(--r-md);
  font-size: 13px;
  line-height: 1.5;
  border-left: 3px solid;
}
.flow-step i { font-size: 14px; }
.flow-step-warn {
  border-color: var(--red);
  color: var(--dark);
}
.flow-step-warn i { color: var(--red); }
.flow-step-good {
  border-color: var(--blue);
  color: var(--dark);
}
.flow-step-good i { color: var(--blue); }
.flow-arrow {
  text-align: center;
  color: var(--gray-light);
  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(--red); opacity: 0.7; }
.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;
}

/* ============================================
   §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-orange { color: var(--orange); background: var(--orange-soft); }
.cap-detail-tag-green { color: var(--green); background: var(--green-soft); }
.cap-detail-tag-purple { color: var(--purple); background: var(--purple-soft); }
.cap-detail-tag-cyan { color: var(--cyan); background: var(--cyan-soft); }
.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);
}
.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-green { background: var(--green-soft); }
.cap-detail-impact-green strong { color: var(--green); }
.cap-detail-impact-dark { background: var(--dark); color: var(--white); }
.cap-detail-impact-dark strong { color: #ffd56a; }

/* 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);
}

/* 资产面板 */
.asset-panel { padding: 0; }
.ap-head {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 18px;
  background: linear-gradient(90deg, var(--blue-soft) 0%, var(--white) 100%);
  border-bottom: 1px solid var(--line);
  margin: -24px -24px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--blue);
}
.ap-body { display: flex; flex-direction: column; gap: 14px; }
.ap-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.ap-stat {
  text-align: center;
  padding: 12px 8px;
  background: var(--light);
  border-radius: var(--r-md);
}
.ap-stat strong {
  display: block;
  font-size: 20px;
  font-weight: 700;
  color: var(--blue);
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
  letter-spacing: -0.02em;
}
.ap-stat span {
  font-size: 11px;
  color: var(--gray);
}
.ap-stat-green strong { color: var(--green); }
.ap-stat-orange strong { color: var(--orange); }
.ap-topo {
  background: var(--light);
  border-radius: var(--r-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.ap-node {
  padding: 8px 14px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: 12px;
  color: var(--dark);
}
.ap-node-core {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
  font-weight: 600;
}
.ap-node-edge {
  background: var(--orange-soft);
  color: var(--orange);
  border-color: var(--orange);
}
.ap-node-group {
  display: flex; gap: 6px; flex-wrap: wrap;
  justify-content: center;
}
.ap-line {
  width: 1px; height: 12px;
  background: var(--gray-light);
}
.ap-bottom {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px;
  background: var(--green-soft);
  border-radius: var(--r-md);
  font-size: 12px;
  color: var(--green);
}

/* 告警面板 */
.alert-panel { padding: 0; }
.alert-head {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 18px;
  background: linear-gradient(90deg, var(--red-soft) 0%, var(--white) 100%);
  border-bottom: 1px solid var(--line);
  margin: -24px -24px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--red);
}
.alert-body { display: flex; flex-direction: column; gap: 12px; }
.alert-before, .alert-after {
  background: var(--light);
  border-radius: var(--r-md);
  padding: 14px;
}
.alert-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--red);
  margin-bottom: 10px;
}
.alert-label-good { color: var(--blue); }
.alert-bar-list {
  display: flex; flex-direction: column;
  gap: 3px;
  margin-bottom: 8px;
}
.alert-bar {
  height: 8px;
  border-radius: 2px;
}
.alert-bar-noise {
  background: var(--gray-light);
  opacity: 0.6;
}
.alert-bar-key {
  background: var(--red);
}
.alert-count {
  font-size: 12px;
  color: var(--gray);
}
.alert-count .alert-key { color: var(--red); font-weight: 500; }

.alert-arrow {
  text-align: center;
  font-size: 12px;
  color: var(--blue);
  padding: 4px 0;
}
.alert-arrow i { font-weight: 700; }

.alert-key-card {
  background: var(--white);
  border: 1px solid var(--blue);
  border-radius: var(--r-md);
  padding: 14px;
  display: flex; flex-direction: column;
  gap: 6px;
  box-shadow: 0 4px 16px rgba(22,93,255,0.12);
}
.alert-key-card strong {
  font-size: 15px;
  color: var(--dark);
}
.alert-key-card > span {
  font-size: 12px;
  color: var(--gray);
}
.alert-suggest {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 10px;
  background: var(--blue-soft);
  border-radius: var(--r-sm);
  font-size: 12px;
  color: var(--blue);
}

/* 巡检面板 */
.inspect-panel { padding: 0; }
.inspect-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);
}
.inspect-body { display: flex; flex-direction: column; gap: 14px; }
.sri-gauge {
  background: var(--light);
  border-radius: var(--r-md);
  padding: 20px;
  text-align: center;
}
.sri-score {
  display: inline-flex; align-items: baseline; gap: 4px;
}
.sri-score strong {
  font-size: 48px;
  font-weight: 700;
  color: var(--green);
  letter-spacing: -0.03em;
  line-height: 1;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
}
.sri-score span {
  font-size: 16px;
  color: var(--gray);
}
.sri-label {
  font-size: 12px;
  color: var(--gray);
  margin-top: 6px;
}
.inspect-list { display: flex; flex-direction: column; gap: 6px; }
.inspect-item {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 12px;
  background: var(--light);
  border-radius: var(--r-sm);
  font-size: 13px;
  color: var(--dark);
}
.inspect-item-good i { color: var(--green); }
.inspect-item-warn {
  background: var(--orange-soft);
  color: var(--dark);
}
.inspect-item-warn i { color: var(--orange); }
.inspect-foot {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 12px;
  background: var(--blue-soft);
  border-radius: var(--r-sm);
  font-size: 12px;
  color: var(--blue);
}

/* 根因定位面板 */
.rootcause-panel {
  padding: 0;
  background: linear-gradient(180deg, #1d1d1f 0%, #2a2a2e 100%) !important;
  color: var(--white);
  border-color: var(--dark) !important;
}
.rc-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;
}
.rc-body { display: flex; flex-direction: column; gap: 6px; }
.rc-trigger, .rc-step {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--r-md);
  font-size: 13px;
  line-height: 1.5;
}
.rc-trigger-tag {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  background: var(--red);
  color: var(--white);
  border-radius: var(--r-pill);
  letter-spacing: 0.05em;
  flex-shrink: 0;
}
.rc-trigger-text { flex: 1; color: rgba(255,255,255,0.92); }
.rc-step { border-left: 3px solid rgba(255,213,106,0.4); }
.rc-step-num {
  font-size: 11px;
  font-weight: 700;
  color: #ffd56a;
  background: rgba(255,213,106,0.15);
  padding: 2px 8px;
  border-radius: var(--r-pill);
  flex-shrink: 0;
}
.rc-step-num-good {
  background: rgba(0,185,107,0.2);
  color: #34d399;
}
.rc-step-text {
  flex: 1;
  color: rgba(255,255,255,0.92);
}
.rc-step-text strong { color: var(--white); font-weight: 600; }
.rc-step-final {
  background: rgba(0,185,107,0.1);
  border-left-color: var(--green);
}
.rc-time {
  font-family: "SF Mono", "Monaco", monospace;
  font-size: 11px;
  color: rgba(255,255,255,0.5);
  flex-shrink: 0;
}
.rc-recommend {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 14px;
  background: rgba(0,185,107,0.15);
  border: 1px solid rgba(52, 211, 153, 0.3);
  border-radius: var(--r-md);
  font-size: 12px;
  color: #34d399;
}
.rc-recommend i { color: #ffd56a; }

/* SOP 面板 */
.sop-panel { padding: 0; }
.sop-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);
}
.sop-body { display: flex; flex-direction: column; gap: 14px; }
.sop-trigger {
  padding: 10px 14px;
  background: var(--orange-soft);
  border-radius: var(--r-sm);
  font-size: 13px;
  color: var(--orange);
  font-weight: 500;
  text-align: center;
}
.sop-flow {
  display: flex; align-items: center; gap: 4px;
  flex-wrap: wrap;
  padding: 14px;
  background: var(--light);
  border-radius: var(--r-md);
}
.sop-node {
  display: flex; align-items: center; gap: 4px;
  padding: 6px 10px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: 11px;
  color: var(--dark);
}
.sop-node i { font-size: 10px; color: var(--purple); }
.sop-node-warn {
  background: var(--orange-soft);
  color: var(--orange);
  border-color: var(--orange);
}
.sop-node-warn i { color: var(--orange); }
.sop-node-good {
  background: var(--green-soft);
  color: var(--green);
  border-color: var(--green);
}
.sop-node-good i { color: var(--green); }
.sop-arrow {
  color: var(--gray-light);
  font-size: 12px;
  font-weight: 700;
}
.sop-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.sop-stat {
  text-align: center;
  padding: 10px;
  background: var(--light);
  border-radius: var(--r-sm);
}
.sop-stat strong {
  display: block;
  font-size: 18px;
  font-weight: 700;
  color: var(--purple);
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
}
.sop-stat span {
  font-size: 11px;
  color: var(--gray);
}
.sop-foot {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 12px;
  background: var(--purple-soft);
  border-radius: var(--r-sm);
  font-size: 12px;
  color: var(--purple);
}

/* 任务面板 */
.task-panel { padding: 0; }
.task-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);
}
.task-body { display: flex; flex-direction: column; gap: 12px; }
.task-list { display: flex; flex-direction: column; gap: 8px; }
.task-item {
  display: flex; gap: 12px;
  padding: 12px;
  background: var(--light);
  border-radius: var(--r-md);
  align-items: flex-start;
}
.task-status {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}
.task-status-done { background: var(--green); color: var(--white); }
.task-status-progress { background: var(--blue); color: var(--white); }
.task-status-review { background: var(--orange); color: var(--white); }
.task-content { flex: 1; }
.task-content strong {
  display: block;
  font-size: 13px;
  color: var(--dark);
  margin-bottom: 2px;
}
.task-content span {
  font-size: 12px;
  color: var(--gray);
  line-height: 1.5;
}
.task-ai {
  display: flex; align-items: center; gap: 8px;
  padding: 12px;
  background: var(--cyan-soft);
  border: 1px dashed var(--cyan);
  border-radius: var(--r-md);
  font-size: 12px;
  color: var(--dark);
}
.task-ai i { color: var(--cyan); }
.task-ai strong { color: var(--cyan); }

/* ============================================
   §7 真实案例
   ============================================ */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: var(--white);
  border-radius: var(--r-card);
  padding: 0;
  border: 1px solid var(--line);
  display: flex; flex-direction: column;
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}
.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.case-head {
  display: flex; align-items: center; gap: 14px;
  padding: 24px 24px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--light);
}
.case-icon {
  width: 48px; height: 48px;
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.case-icon-red { background: var(--red-soft); color: var(--red); }
.case-icon-orange { background: var(--orange-soft); color: var(--orange); }
.case-icon-purple { background: var(--purple-soft); color: var(--purple); }
.case-tag {
  display: block;
  font-size: 11px;
  color: var(--gray);
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}
.case-head h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.3;
}

.case-section {
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
}
.case-section:last-of-type { border-bottom: none; }
.case-section p {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.7;
}
.case-section p strong { color: var(--dark); font-weight: 500; }
.case-label {
  display: flex; align-items: center; gap: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gray);
  margin-bottom: 8px;
}
.case-label i { color: var(--gray); font-size: 12px; }
.case-label-warn { color: var(--red); }
.case-label-warn i { color: var(--red); }
.case-label-loss {
  color: var(--orange);
  font-size: 12px;
}
.case-label-loss i { color: var(--orange); }

.case-section-loss {
  background: linear-gradient(180deg, var(--white) 0%, var(--red-soft) 100%);
}
.case-loss-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 4px;
}
.case-loss {
  text-align: center;
  padding: 12px 6px;
  background: var(--white);
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
}
.case-loss strong {
  display: block;
  font-size: 18px;
  font-weight: 700;
  color: var(--red);
  letter-spacing: -0.02em;
  margin-bottom: 2px;
  font-family: -apple-system, "SF Pro Display", "Inter", sans-serif;
}
.case-loss span {
  font-size: 10px;
  color: var(--gray);
  line-height: 1.3;
}
.case-loss-primary {
  background: var(--red);
  border-color: var(--red);
}
.case-loss-primary strong { color: var(--white); font-size: 20px; }
.case-loss-primary span { color: rgba(255,255,255,0.85); }

.case-fix {
  padding: 16px 24px;
  background: var(--blue-soft);
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 12px;
  color: var(--dark);
  line-height: 1.5;
}
.case-fix i { color: var(--blue); font-size: 14px; flex-shrink: 0; margin-top: 2px; }
.case-fix strong { color: var(--blue); font-weight: 600; }

/* ============================================
   §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: 260px 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-data { border-left: 4px solid var(--cyan); }
.arch-layer-discover { border-left: 4px solid var(--blue); }
.arch-layer-heal { border-left: 4px solid var(--purple); }
.arch-layer-govern { border-left: 4px solid var(--green); }
.arch-layer-head { display: flex; align-items: center; gap: 12px; }
.arch-layer-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--gray-light);
  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;
}

.arch-copilot {
  margin-top: 8px;
  background: linear-gradient(120deg, var(--purple) 0%, #9254de 100%);
  border-radius: var(--r-card);
  padding: 24px 28px;
  color: var(--white);
  box-shadow: 0 8px 30px rgba(114,46,209,0.25);
}
.copilot-head {
  display: flex; align-items: center; gap: 8px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
}
.copilot-head i { font-size: 16px; }
.copilot-desc {
  font-size: 13px;
  color: rgba(255,255,255,0.92);
  line-height: 1.6;
}

/* ============================================
   §9 量化指标表
   ============================================ */
.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;
}
.metrics-cell-name .name-text > span {
  font-size: 12px;
  color: var(--gray);
}
.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%); }

.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 分角色价值
   ============================================ */
.role-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.role-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;
}
.role-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.role-card-blue { border-top: 4px solid var(--blue); }
.role-card-green { border-top: 4px solid var(--green); }
.role-card-purple { border-top: 4px solid var(--purple); }

.role-head { margin-bottom: 24px; }
.role-icon {
  width: 52px; height: 52px;
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
}
.role-card-blue .role-icon { background: var(--blue-soft); color: var(--blue); }
.role-card-green .role-icon { background: var(--green-soft); color: var(--green); }
.role-card-purple .role-icon { background: var(--purple-soft); color: var(--purple); }
.role-head h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}
.role-sub {
  font-size: 13px;
  color: var(--gray);
}
.role-list { display: flex; flex-direction: column; gap: 20px; }
.role-list li {
  padding-left: 18px;
  border-left: 3px solid var(--light);
  transition: border-color 0.2s;
}
.role-list li:hover { border-left-color: var(--blue); }
.role-card-green .role-list li:hover { border-left-color: var(--green); }
.role-card-purple .role-list li:hover { border-left-color: var(--purple); }

.role-list strong {
  display: block;
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.role-card-blue .role-list strong { color: var(--blue); }
.role-card-green .role-list strong { color: var(--green); }
.role-card-purple .role-list strong { color: var(--purple); }
.role-list span {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.6;
}

/* ============================================
   §11 Copilot + 交付
   ============================================ */
.copilot-card {
  background: linear-gradient(120deg, var(--dark) 0%, #2a2a2e 50%, var(--purple) 100%);
  border-radius: var(--r-card);
  padding: 48px 40px;
  color: var(--white);
  margin-bottom: 40px;
  box-shadow: 0 20px 60px rgba(114,46,209,0.2);
  position: relative;
  overflow: hidden;
}
.copilot-card::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255,213,106,0.1) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(114,46,209,0.2) 0%, transparent 50%);
  pointer-events: none;
}
.copilot-card-head {
  text-align: center;
  margin-bottom: 36px;
  position: relative;
  z-index: 1;
}
.copilot-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 6px 16px;
  background: rgba(255,213,106,0.15);
  color: #ffd56a;
  border-radius: var(--r-pill);
  margin-bottom: 16px;
}
.copilot-card-head h3 {
  font-size: 28px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.copilot-card-head p {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
}
.copilot-abilities {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  position: relative;
  z-index: 1;
}
.copilot-ability {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r-md);
  padding: 24px 20px;
  transition: background 0.2s;
}
.copilot-ability:hover { background: rgba(255,255,255,0.1); }
.copilot-ability-icon {
  width: 40px; height: 40px;
  border-radius: var(--r-md);
  background: rgba(255,213,106,0.15);
  color: #ffd56a;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  margin-bottom: 14px;
}
.copilot-ability strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 6px;
}
.copilot-ability p {
  font-size: 12px;
  color: rgba(255,255,255,0.75);
  line-height: 1.6;
}

.delivery-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}
.delivery-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;
}
.delivery-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.delivery-card-primary {
  background: linear-gradient(180deg, var(--white) 0%, var(--purple-soft) 100%);
  border-color: var(--purple);
}
.delivery-head {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.delivery-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;
}
.delivery-card-primary .delivery-icon {
  background: var(--purple-soft);
  color: var(--purple);
}
.delivery-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;
}
.delivery-tag-highlight {
  background: var(--purple);
  color: var(--white);
}
.delivery-head h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
  flex-basis: 100%;
  margin-top: 4px;
}
.delivery-list { display: grid; gap: 10px; }
.delivery-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px;
  color: var(--dark);
  line-height: 1.6;
}
.delivery-list i {
  color: var(--blue);
  margin-top: 4px;
  flex-shrink: 0;
}
.delivery-card-primary .delivery-list i { color: var(--purple); }
.delivery-list strong { color: var(--dark); font-weight: 600; }

.team-band {
  background: var(--white);
  border-radius: var(--r-card);
  padding: 32px;
  border: 1px solid var(--line);
  display: flex; flex-direction: column; align-items: center;
  gap: 12px;
  text-align: center;
}
.team-head {
  display: flex; align-items: center; gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
}
.team-head i { color: var(--blue); font-size: 20px; }
.team-desc {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.7;
  max-width: 800px;
}

/* ============================================
   §12 完整 CTA
   ============================================ */
.cta-section {
  background: linear-gradient(180deg, var(--white) 0%, var(--light) 100%);
}
.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-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);
  justify-content: flex-start;
}
.cta-trust span { display: inline-flex; align-items: center; gap: 6px; }
.cta-trust i { color: var(--blue); }
.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; }

/* ============================================
   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; font-weight: 700; }
.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, .pain-grid, .cap-grid, .case-grid, .role-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; }
  .scale-grid { grid-template-columns: repeat(3, 1fr); }
  .copilot-abilities { grid-template-columns: 1fr; }
  .delivery-grid { grid-template-columns: 1fr; }
  .metrics-row { grid-template-columns: 1.5fr 0.8fr 0.8fr 1.5fr 0.8fr; gap: 12px; padding: 18px 20px; }
  .metrics-cell-name > i { width: 32px; height: 32px; font-size: 14px; }
  .cta-final { grid-template-columns: 1fr; gap: 32px; }
  .arch-layer { grid-template-columns: 1fr; gap: 16px; }
}

@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, .pain-grid, .cap-grid, .case-grid, .role-grid { grid-template-columns: 1fr; }
  .scale-grid { grid-template-columns: repeat(2, 1fr); }
  .cap-detail { gap: 28px; margin-bottom: 64px; }
  .cap-detail-text h3 { font-size: 24px; }

  .page-header { padding: 100px 20px 50px; }
  .overview-card { padding: 32px 24px; }

  .metrics-row {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 16px 18px;
  }
  .metrics-row-head { display: none; }
  .metrics-cell-before, .metrics-cell-after, .metrics-cell-trend { text-align: left; }
  .metrics-cell-after { font-size: 18px; }

  .section-conclusion { padding: 18px 20px; font-size: 15px; flex-direction: column; gap: 8px; }

  .copilot-card { padding: 32px 24px; }
  .cta-final-text h2 { font-size: 28px; }
}


/* ===== 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);
}