/* ========================================
   增益AI官网 — 全局样式
   配色：主色 #0F3B57 / 辅色 #2B7A8A
======================================== */

/* --- CSS Variables --- */
:root {
  --primary: #0F3B57;
  --primary-light: #1a5a7a;
  --accent: #2B7A8A;
  --accent-light: #3a9aad;
  --bg: #FFFFFF;
  --bg-alt: #F8FAFC;
  --border: #E5E7EB;
  --text: #374151;
  --text-light: #6B7280;
  --text-dark: #1F2937;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
  --radius: 8px;
  --radius-sm: 4px;
  --max-width: 1300px;
  --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  color: var(--text);
  line-height: 1.7;
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-light); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* --- Typography --- */
h1, h2, h3, h4 { color: var(--primary); line-height: 1.3; }
h1 { font-size: 2.75rem; font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: 2rem; font-weight: 700; }
h3 { font-size: 1.35rem; font-weight: 600; }
h4 { font-size: 1.1rem; font-weight: 600; }

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
}

/* --- Layout --- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }

@media (max-width: 768px) {
  .section { padding: 48px 0; }
}

/* --- Navbar --- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s;
}
.navbar.scrolled { box-shadow: var(--shadow); }
.navbar .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.nav-logo {
  font-size: 1.5rem; font-weight: 700; color: var(--primary);
  display: flex; align-items: center; gap: 8px;
}
.nav-logo img { max-width: 180px; height: auto; }
.nav-logo .logo-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent);
  display: inline-block;
}
.nav-links { display: flex; gap: 36px; align-items: center; }
.nav-links a {
  color: var(--text); font-size: 1.05rem; font-weight: 500;
  position: relative; padding: 4px 0;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
  background: var(--accent); transition: width 0.25s;
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a:hover { color: var(--primary); }
.nav-links a.active { color: var(--accent); font-weight: 600; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.nav-toggle span {
  width: 24px; height: 2px; background: var(--primary);
  transition: all 0.3s; border-radius: 2px;
}

@media (max-width: 1024px) {
  .nav-links { gap: 18px; }
  .nav-links a { font-size: 0.88rem; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; z-index: 1001; }
  .nav-links {
    position: fixed; top: 0; right: -100%; width: 70%; max-width: 320px; height: 100vh;
    flex-direction: column; background: white; padding: 88px 32px 32px;
    gap: 24px; box-shadow: -4px 0 20px rgba(0,0,0,0.1);
    transition: right 0.3s ease;
  }
  .nav-links.open { right: 0; }
  .nav-links a { font-size: 1.05rem; }
}

/* --- Hero --- */
.hero {
  background: linear-gradient(135deg, rgba(15,59,87,0.88) 0%, rgba(26,77,110,0.85) 100%),
              url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?w=1920&h=800&fit=crop');
  background-size: cover; background-position: center;
  color: #fff; text-align: center; padding: 140px 0 100px;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -50%; right: -30%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(43,122,138,0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.hero h1 { color: #fff; margin-bottom: 16px; position: relative; }
.hero .hero-subtitle {
  font-size: 1.1rem; color: rgba(255,255,255,0.9);
  max-width: 900px; margin: 0 auto 32px; position: relative;
  white-space: nowrap;
}
.hero-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; position: relative; }

.btn { display: inline-flex; align-items: center; gap: 6px; padding: 11px 26px; border-radius: var(--radius-sm); font-size: 0.95rem; font-weight: 600; cursor: pointer; transition: all 0.25s; border: none; font-family: inherit; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(43,122,138,0.35); }
.btn-outline { border: 1px solid rgba(255,255,255,0.5); color: #fff; background: transparent; }
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.08); }
.btn-outline-dark { border: 1px solid var(--accent); color: var(--accent); background: transparent; }
.btn-outline-dark:hover { background: var(--accent); color: #fff; }
.btn-sm { padding: 8px 18px; font-size: 0.88rem; }
.btn-lg { padding: 14px 32px; font-size: 1.05rem; }

/* --- Floating Data Cards --- */
.data-cards {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  margin-top: -48px; position: relative; z-index: 10;
}
.data-card {
  background: #fff; padding: 28px 20px; border-radius: var(--radius);
  box-shadow: var(--shadow); text-align: center;
  transition: transform 0.25s, box-shadow 0.25s;
}
.data-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.data-card .data-number { font-size: 2.2rem; font-weight: 700; color: var(--accent); line-height: 1.2; }
.data-card .data-label { font-size: 0.95rem; color: var(--text-light); margin-top: 6px; }

@media (max-width: 768px) {
  .data-cards { grid-template-columns: 1fr; margin-top: -32px; gap: 16px; }
}

/* --- Cards --- */
.card {
  background: #fff; border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.card-body { padding: 24px; }
.card-alt {
  background: var(--bg-alt); border-radius: var(--radius);
  padding: 24px; border: 1px solid var(--border);
}

/* --- Section Header --- */
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { margin-bottom: 12px; }
.section-header p { font-size: 1.1rem; color: var(--text-light); max-width: 640px; margin: 0 auto; }

/* --- Service Flow --- */
.service-flow {
  display: flex; gap: 0; align-items: stretch; flex-wrap: wrap;
  justify-content: center;
}
.service-step {
  flex: 1; min-width: 180px; max-width: 220px;
  text-align: center; padding: 32px 20px; position: relative;
  background: #fff; border-radius: var(--radius);
  box-shadow: var(--shadow-sm); border: 1px solid var(--border);
}
.service-step + .service-step { margin-left: -1px; }
.service-step .step-number {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--accent); color: #fff; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px; font-size: 1.1rem;
}
.service-step h4 { margin-bottom: 8px; }
.service-step p { font-size: 0.9rem; color: var(--text-light); }
.service-arrow {
  position: absolute; right: -16px; top: 50%; transform: translateY(-50%);
  font-size: 1.4rem; color: var(--accent); z-index: 1;
}

@media (max-width: 768px) {
  .service-flow { flex-direction: column; gap: 16px; align-items: center; }
  .service-step { max-width: 100%; width: 100%; }
  .service-step + .service-step { margin-left: 0; }
  .service-arrow { display: none; }
}

/* --- Case Grid --- */
.case-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.case-card {
  background: #fff; border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden;
}
.case-card .case-image {
  height: 180px; background: var(--bg-alt);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-light); font-size: 0.9rem;
}
.case-card .case-body { padding: 20px; }
.case-card .case-tag {
  display: inline-block; font-size: 0.8rem; padding: 3px 10px;
  border-radius: 20px; background: #E8F4F8; color: var(--accent);
  margin-bottom: 10px;
}

@media (max-width: 768px) {
  .case-grid { grid-template-columns: 1fr; }
}

/* --- Logo Bar --- */
.logo-bar {
  display: flex; gap: 48px; align-items: center; justify-content: center;
  flex-wrap: wrap; opacity: 0.6; padding: 32px 0;
}
.logo-bar img, .logo-bar .logo-placeholder {
  height: 36px; filter: grayscale(1); transition: filter 0.3s, opacity 0.3s;
}
.logo-bar img:hover, .logo-bar .logo-placeholder:hover { filter: grayscale(0); opacity: 1; }
.logo-placeholder {
  display: flex; align-items: center; justify-content: center;
  color: var(--text-light); font-size: 1rem; font-weight: 600;
  letter-spacing: 0.05em;
}

/* --- Content Grid (knowledge / resources / insights) --- */
.content-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.content-card {
  background: #fff; border-radius: var(--radius);
  box-shadow: var(--shadow-sm); border: 1px solid var(--border);
  padding: 24px; transition: all 0.25s;
}
.content-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.content-card .content-meta {
  font-size: 0.85rem; color: var(--text-light); margin-bottom: 8px;
  display: flex; gap: 16px;
}
.content-card h4 { margin-bottom: 8px; line-height: 1.4; }
.content-card p { font-size: 0.93rem; color: var(--text-light); }

@media (max-width: 768px) {
  .content-grid { grid-template-columns: 1fr; }
}

/* --- Comparison Table --- */
.comp-table {
  width: 100%; border-collapse: collapse; font-size: 0.95rem;
}
.comp-table thead th {
  background: var(--primary); color: #fff; padding: 16px 20px;
  text-align: left; font-weight: 600;
}
.comp-table thead th:first-child { border-radius: var(--radius-sm) 0 0 0; }
.comp-table thead th:last-child { border-radius: 0 var(--radius-sm) 0 0; }
.comp-table tbody td {
  padding: 14px 20px; border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.comp-table tbody tr:nth-child(even) td { background: var(--bg-alt); }

/* --- Contact Form --- */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 0.93rem; font-weight: 500; color: var(--text-dark); margin-bottom: 6px; }
.form-input, .form-textarea {
  width: 100%; padding: 11px 14px; border: 1px solid var(--border);
  border-radius: var(--radius-sm); font-size: 0.95rem;
  font-family: var(--font-sans); color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
  background: #fff;
}
.form-input:focus, .form-textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(43,122,138,0.12);
}
.form-textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 768px) { .form-row { grid-template-columns: 1fr; } }

/* --- Page Hero (inner pages) --- */
.page-hero {
  background: linear-gradient(135deg, var(--primary) 0%, #1a4d6e 100%);
  color: #fff; text-align: center; padding: 120px 0 60px;
}
.page-hero h1 { color: #fff; }
.page-hero p { color: rgba(255,255,255,0.8); font-size: 1.1rem; margin-top: 12px; }

/* --- Download Card --- */
.download-card {
  display: flex; align-items: center; gap: 20px;
  background: #fff; border-radius: var(--radius);
  box-shadow: var(--shadow-sm); border: 1px solid var(--border);
  padding: 24px; transition: all 0.25s;
}
.download-card:hover { box-shadow: var(--shadow); }
.download-card .download-icon {
  width: 56px; height: 56px; border-radius: var(--radius-sm);
  background: #E8F4F8; display: flex; align-items: center;
  justify-content: center; font-size: 1.5rem; flex-shrink: 0;
}
.download-card .download-info { flex: 1; }
.download-card .download-info h4 { margin-bottom: 4px; }
.download-card .download-info p { font-size: 0.88rem; color: var(--text-light); }

/* --- About Team --- */
.team-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.team-card { text-align: center; }
.team-card .team-avatar {
  width: 96px; height: 96px; border-radius: 50%; background: var(--bg-alt);
  margin: 0 auto 16px; border: 3px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-light); font-size: 0.8rem;
}
.team-card h4 { margin-bottom: 4px; }
.team-card .team-role { font-size: 0.9rem; color: var(--accent); }

@media (max-width: 768px) {
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}

/* --- Footer --- */
.footer {
  background: var(--primary); color: rgba(255,255,255,0.7);
  padding: 56px 0 32px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px; margin-bottom: 40px;
}
.footer h4 { color: #fff; margin-bottom: 16px; font-size: 1rem; }
.footer a { color: rgba(255,255,255,0.6); font-size: 0.92rem; }
.footer a:hover { color: #fff; }
.footer .footer-brand { font-size: 1.3rem; font-weight: 700; color: #fff; }
.footer .footer-desc { margin-top: 12px; font-size: 0.9rem; line-height: 1.6; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px; font-size: 0.88rem;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}

/* --- Utility --- */
.text-center { text-align: center; }
.text-light { color: var(--text-light); }
.mt-sm { margin-top: 16px; }
.mt-md { margin-top: 32px; }
.mt-lg { margin-top: 48px; }
.mb-sm { margin-bottom: 16px; }
.mb-md { margin-bottom: 32px; }
.bg-alt { background: var(--bg-alt); }
.highlight { color: var(--accent); font-weight: 600; }
.badge {
  display: inline-block; font-size: 0.8rem; padding: 4px 12px;
  border-radius: 20px; font-weight: 500;
}
.badge-primary { background: #E8F4F8; color: var(--accent); }
.badge-outline { border: 1px solid var(--accent); color: var(--accent); background: transparent; }

/* --- Scroll animation --- */
.fade-in {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* --- Breadcrumb --- */
.breadcrumb { font-size: 0.9rem; color: var(--text-light); margin-bottom: 16px; }
.breadcrumb a { color: var(--text-light); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { margin: 0 6px; }

/* --- Visual: Hero Decoration --- */
.hero-graphic {
  position: absolute; right: -10%; top: -30%;
  width: 500px; height: 500px; opacity: 0.06;
  pointer-events: none;
}
.hero-grid {
  position: absolute; inset: 0; opacity: 0.03; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.3) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* --- Visual: Case Image Placeholder --- */
.case-img {
  height: 260px; position: relative; overflow: hidden;
}
.case-img img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; transition: transform 0.4s ease;
}
.case-card:hover .case-img img { transform: scale(1.05); }
.case-img-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(10,22,40,0.08) 0%, rgba(10,22,40,0.5) 100%);
}
.case-img-tag {
  position: absolute; bottom: 18px; left: 20px; z-index: 2;
  color: #fff; font-size: 0.88rem; font-weight: 600;
  letter-spacing: 0.04em;
  text-shadow: 0 1px 6px rgba(0,0,0,0.5);
}

/* --- Visual: Team Avatar --- */
.team-avatar {
  width: 100px; height: 100px; border-radius: 50%;
  margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; font-weight: 700; color: var(--accent);
  border: 3px solid var(--border);
  background: linear-gradient(135deg, #E8F4F8 0%, #d4eef5 100%);
}
.team-avatar.av1 { background: linear-gradient(135deg, #E8F4F8, #c8e6f0); color: #0F3B57; }
.team-avatar.av2 { background: linear-gradient(135deg, #e8f0f8, #c8d8f0); color: #1a4d6e; }
.team-avatar.av3 { background: linear-gradient(135deg, #e8f8f4, #c8f0e0); color: #0F3B57; }
.team-avatar.av4 { background: linear-gradient(135deg, #f4e8f8, #e0c8f0); color: #1a4d6e; }

/* --- Visual: Article Thumbnail --- */
.article-thumb {
  height: 180px; position: relative; overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
}
.article-thumb img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover;
}
.article-thumb::after {
  content: ''; position: absolute; inset: 0;
  background: rgba(15,59,87,0.2);
}

/* --- Case Detail Side Panel --- */
.case-detail-row {
  display: grid; grid-template-columns: 1fr 2fr;
  min-height: 380px;
}
.case-detail-side {
  position: relative; overflow: hidden;
  border-radius: var(--radius) 0 0 var(--radius);
  min-height: 380px;
}
.case-detail-side img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover;
}
.case-detail-side .case-detail-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(15,59,87,0.05) 0%, rgba(10,22,40,0.55) 100%);
}
.case-detail-side .case-detail-tag {
  position: absolute; bottom: 24px; left: 24px; z-index: 2;
  color: #fff; font-size: 1.05rem; font-weight: 600;
  letter-spacing: 0.06em;
  text-shadow: 0 1px 6px rgba(0,0,0,0.6);
}

.case-content { padding: 36px 32px; min-width: 300px; }

@media (max-width: 768px) {
  .case-detail-row {
    grid-template-columns: 1fr;
  }
  .case-detail-side {
    min-height: 240px; border-radius: var(--radius) var(--radius) 0 0;
  }
}

/* --- Visual: Service Icons --- */
.service-icon {
  width: 64px; height: 64px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px; font-size: 1.8rem;
  background: linear-gradient(135deg, #E8F4F8, #d4eef5);
  color: var(--accent);
}

/* --- Visual: Data Highlight on About --- */
.stats-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.stat-card {
  text-align: center; padding: 28px 16px;
  background: #fff; border-radius: var(--radius);
  box-shadow: var(--shadow-sm); border: 1px solid var(--border);
}
.stat-icon { font-size: 2rem; margin-bottom: 8px; }
.stat-number { font-size: 2rem; font-weight: 700; color: var(--accent); }
.stat-label { font-size: 0.9rem; color: var(--text-light); margin-top: 4px; }

@media (max-width: 768px) {
  .stats-grid { grid-template-columns: 1fr; }
  .hero .hero-subtitle { white-space: normal; max-width: 100%; font-size: 0.95rem; }
}

/* --- Gain System Section --- */
.gain-section {
  background: var(--primary); color: #fff; padding: 80px 0;
  position: relative; overflow: hidden;
}
.gain-section::before {
  content: ''; position: absolute; top: -50%; right: -20%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(43,122,138,0.2) 0%, transparent 70%);
  border-radius: 50%;
}
.gain-section h2, .gain-section h3 { color: #fff; }
.gain-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
  align-items: center; position: relative; z-index: 1;
}
.gain-metrics {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.gain-metric {
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius); padding: 20px;
  text-align: center;
}
.gain-metric .num { font-size: 1.8rem; font-weight: 700; color: #4fc3f7; }
.gain-metric .lbl { font-size: 0.85rem; color: rgba(255,255,255,0.7); margin-top: 4px; }
.gain-dashboard {
  background: rgba(10,22,40,0.6); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px; overflow: hidden;
  display: flex; flex-direction: column;
  align-self: stretch;
}
.gain-dash-topbar {
  background: rgba(0,0,0,0.3); padding: 14px 20px;
  display: flex; align-items: center; gap: 10px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.gain-dash-dot { width: 10px; height: 10px; border-radius: 50%; }
.gain-dash-dot.r { background: #ff5f57; } .gain-dash-dot.y { background: #febc2e; } .gain-dash-dot.g { background: #28c840; }
.gain-dash-title { color: rgba(255,255,255,0.5); font-size: 0.8rem; margin-left: 8px; }
.gain-dash-body { padding: 20px; flex: 1; display: flex; flex-direction: column; gap: 16px; }
.gain-dash-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.gain-dash-stat {
  background: rgba(255,255,255,0.05); border-radius: 8px;
  padding: 12px 10px; text-align: center;
}
.gain-dash-stat .val { font-size: 1.3rem; font-weight: 700; color: #4fc3f7; }
.gain-dash-stat .val.up { color: #28c840; }
.gain-dash-stat .val.warn { color: #febc2e; }
.gain-dash-stat .lbl { font-size: 0.7rem; color: rgba(255,255,255,0.5); margin-top: 4px; }

.gain-dash-chart {
  background: rgba(255,255,255,0.03); border-radius: 8px;
  padding: 14px; flex: 1;
}
.gain-dash-chart-label {
  font-size: 0.75rem; color: rgba(255,255,255,0.5); margin-bottom: 10px;
}
.gain-chart-bars { display: flex; align-items: flex-end; gap: 8px; height: 80px; padding: 0 4px; }
.gain-chart-bar {
  flex: 1; border-radius: 4px 4px 0 0; min-width: 14px;
  position: relative;
}
.gain-chart-bar.b1 { height: 65%; background: linear-gradient(180deg, #4fc3f7, #2B7A8A); }
.gain-chart-bar.b2 { height: 78%; background: linear-gradient(180deg, #4fc3f7, #2B7A8A); }
.gain-chart-bar.b3 { height: 55%; background: linear-gradient(180deg, #4fc3f7, #2B7A8A); }
.gain-chart-bar.b4 { height: 88%; background: linear-gradient(180deg, #4fc3f7, #2B7A8A); }
.gain-chart-bar.b5 { height: 72%; background: linear-gradient(180deg, #4fc3f7, #2B7A8A); }
.gain-chart-bar.b6 { height: 90%; background: linear-gradient(180deg, #4fc3f7, #2B7A8A); }
.gain-chart-bar.b7 { height: 82%; background: linear-gradient(180deg, #4fc3f7, #2B7A8A); }
.gain-chart-x { display: flex; gap: 8px; margin-top: 6px; padding: 0 4px; }
.gain-chart-x span { flex: 1; text-align: center; font-size: 0.6rem; color: rgba(255,255,255,0.3); min-width: 14px; }

.gain-dash-table { font-size: 0.78rem; }
.gain-dash-table .row {
  display: grid; grid-template-columns: 1fr 1fr 1fr 0.8fr;
  padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.04);
  align-items: center;
}
.gain-dash-table .row:last-child { border-bottom: none; }
.gain-dash-table .hdr { color: rgba(255,255,255,0.4); font-size: 0.7rem; }
.gain-dash-table .engine-name { color: rgba(255,255,255,0.8); font-weight: 500; }
.gain-dash-table .val { color: #4fc3f7; font-weight: 600; text-align: center; }
.gain-dash-table .rank { text-align: center; }
.gain-dash-table .rank .tag {
  display: inline-block; padding: 2px 8px; border-radius: 10px;
  font-size: 0.7rem; font-weight: 600;
}
.gain-dash-table .rank .tag.green { background: rgba(40,200,64,0.15); color: #28c840; }
.gain-dash-table .rank .tag.blue  { background: rgba(79,195,247,0.15); color: #4fc3f7; }

@media (max-width: 768px) {
  .gain-grid { grid-template-columns: 1fr; }
  .gain-dash-stats { grid-template-columns: repeat(2, 1fr); }
}

/* --- Visual: Resource icon color --- */
.download-card .download-icon.pdf  { background: #fef2f2; }
.download-card .download-icon.report { background: #eff6ff; }
.download-card .download-icon.guide { background: #f0fdf4; }