/* ===== Reset & Variables ===== */
:root {
  --bg-base: #080c16;
  --bg-elevated: #0d1320;
  --bg-card: rgba(15, 23, 42, 0.7);
  --bg-card-hover: rgba(30, 41, 59, 0.8);
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-blue: #3b82f6;
  --accent: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-purple: #8b5cf6;
  --accent-pink: #ec4899;
  --accent-glow: rgba(59, 130, 246, 0.25);
  --cyan-glow: rgba(6, 182, 212, 0.15);
  --purple-glow: rgba(139, 92, 246, 0.15);
  --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
  --gradient-premium: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #ec4899 100%);
  --gradient-card: linear-gradient(135deg, rgba(59,130,246,0.08) 0%, rgba(139,92,246,0.06) 100%);
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(59, 130, 246, 0.3);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 60px rgba(59, 130, 246, 0.12);
  --radius: 14px;
  --radius-lg: 22px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg-base); color: var(--text-primary); line-height: 1.65; overflow-x: hidden;
}
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
strong { color: #cbd5e1; }

/* ===== Global Particle Canvas ===== */
#particleCanvas { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }

/* ===== Header ===== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: 16px 0; transition: var(--transition); }
.header.scrolled { background: rgba(8, 12, 22, 0.8); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); border-bottom: 1px solid rgba(255,255,255,0.05); padding: 10px 0; }
.nav-container { display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 1.25rem; font-weight: 700; flex-shrink: 0; position: relative; z-index: 2; }
.logo-icon { width: 36px; height: 36px; background: var(--gradient-primary); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 800; font-size: 1.2rem; }
.logo-dot { color: var(--accent); }
.nav { display: flex; gap: 2px; align-items: center; position: relative; z-index: 2; }
.nav-link { font-size: 0.85rem; color: var(--text-secondary); transition: var(--transition); padding: 6px 12px; border-radius: 6px; white-space: nowrap; position: relative; }
.nav-link::after { content: ''; position: absolute; bottom: 0; left: 12px; right: 12px; height: 2px; background: var(--accent); width: 0; transition: width var(--transition); }
.nav-link:hover, .nav-link.active { color: #fff; }
.nav-link:hover::after, .nav-link.active::after { width: calc(100% - 24px); }
.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; flex-shrink: 0; position: relative; z-index: 2; }
.menu-toggle span { display: block; width: 24px; height: 2px; background: var(--text-primary); transition: var(--transition); }
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ===== Hero ===== */
.hero { min-height: 100vh; display: flex; align-items: center; position: relative; overflow: hidden; padding: 120px 0 80px; z-index: 1; }
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-glow-primary { position: absolute; top: 40%; left: 50%; transform: translate(-50%,-50%); width: 900px; height: 900px; background: radial-gradient(circle, rgba(59,130,246,0.18) 0%, rgba(6,182,212,0.08) 35%, transparent 70%); animation: heroGlow 5s ease-in-out infinite; border-radius: 50%; }
.hero-glow-secondary { position: absolute; top: 60%; right: 20%; width: 500px; height: 500px; background: radial-gradient(circle, rgba(139,92,246,0.12) 0%, transparent 70%); animation: heroGlow 6s ease-in-out 2s infinite; border-radius: 50%; }
@keyframes heroGlow { 0%,100% { transform: translate(-50%,-50%) scale(1); opacity:.7; } 50% { transform: translate(-50%,-50%) scale(1.3); opacity:1; } }
.hero-content { position: relative; z-index: 1; text-align: center; max-width: 900px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(59,130,246,0.08); border: 1px solid rgba(59,130,246,0.25); border-radius: 100px; padding: 8px 20px; font-size: .85rem; letter-spacing: .12em; color: var(--accent); margin-bottom: 32px; animation: fadeInUp .8s ease; }
.pulse-dot { width: 8px; height: 8px; background: var(--accent-cyan); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(6,182,212,0.5); } 50% { box-shadow: 0 0 0 14px transparent; } }
.hero-title { font-size: clamp(2.5rem, 6vw, 4.2rem); font-weight: 800; line-height: 1.15; margin-bottom: 24px; animation: fadeInUp .8s ease .1s both; }
.hero-line { display: block; }
.gradient-text { background: var(--gradient-premium); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-desc { font-size: 1.15rem; color: var(--text-secondary); max-width: 650px; margin: 0 auto 40px; line-height: 1.8; animation: fadeInUp .8s ease .2s both; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 64px; animation: fadeInUp .8s ease .3s both; }

/* ===== Buttons ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 14px 32px; border-radius: 100px; font-size: .95rem; font-weight: 600; border: none; cursor: pointer; transition: var(--transition); white-space: nowrap; }
.btn-primary { background: var(--gradient-primary); color: #fff; box-shadow: 0 4px 24px var(--accent-glow); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 36px rgba(59,130,246,0.4); }
.btn-outline { background: transparent; color: #e2e8f0; border: 1px solid rgba(255,255,255,0.15); }
.btn-outline:hover { border-color: var(--accent); background: rgba(59,130,246,0.08); }
.btn-full { width: 100%; }

/* ===== Hero Stats ===== */
.hero-stats { display: flex; gap: 48px; justify-content: center; flex-wrap: wrap; animation: fadeInUp .8s ease .4s both; }
.stat-item { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.stat-num { font-size: 1.6rem; font-weight: 800; background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { font-size: .85rem; color: var(--text-secondary); }
.scroll-indicator { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--text-muted); font-size: .8rem; animation: bounce 2s infinite; z-index: 1; }
@keyframes bounce { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

/* ===== Sections ===== */
.section { padding: 60px 0; position: relative; z-index: 1; }
.section-header { text-align: center; }
.section-tag { display: inline-block; font-size: .75rem; font-weight: 600; letter-spacing: .2em; color: var(--accent-cyan); margin-bottom: 16px; padding: 5px 14px; background: rgba(6,182,212,0.08); border: 1px solid rgba(6,182,212,0.15); border-radius: 6px; }
.section-title { font-size: clamp(1.8rem, 4vw, 2.5rem); font-weight: 700; margin-bottom: 12px; color: #f1f5f9; }
.section-desc { color: var(--text-secondary); font-size: 1.05rem; }
.sub-title { font-size: 1.3rem; font-weight: 700; text-align: center; margin-bottom: 40px; color: #e2e8f0; }
.section-intro { text-align: center; max-width: 720px; margin: 0 auto 48px; color: var(--text-secondary); font-size: .95rem; line-height: 1.8; }

/* ===== Section Body (no collapse) ===== */
.section-body { padding: 20px 0 40px; }

/* ===== About ===== */
.about-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.about-card { background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px 32px; transition: var(--transition); }
.about-card:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow-glow); }
.about-card.featured { background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(139,92,246,0.06)); border-color: rgba(59,130,246,0.2); }
.card-icon { width: 64px; height: 64px; background: rgba(59,130,246,0.08); border-radius: 16px; display: flex; align-items: center; justify-content: center; color: var(--accent-cyan); margin-bottom: 24px; }
.about-card h3 { font-size: 1.25rem; margin-bottom: 16px; color: #f1f5f9; }
.about-card p { color: var(--text-secondary); line-height: 1.8; font-size: .95rem; }
.about-mission-list { display: flex; flex-direction: column; gap: 12px; }
.about-mission-list li { color: var(--text-secondary); font-size: .95rem; padding-left: 16px; position: relative; line-height: 1.7; }
.about-mission-list li::before { content: ''; position: absolute; left: 0; top: 10px; width: 6px; height: 6px; background: var(--accent-cyan); border-radius: 50%; }

/* ===== Advantages ===== */
.advantages-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.adv-card { background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 44px 32px; text-align: center; transition: var(--transition); }
.adv-card:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow-glow); }
.adv-card.featured { border-color: rgba(59,130,246,0.25); background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(139,92,246,0.05)); }
.adv-icon { margin-bottom: 24px; color: var(--accent-cyan); opacity: 0.85; display: flex; justify-content: center; }
.adv-card h3 { font-size: 1.3rem; margin-bottom: 16px; color: #f1f5f9; }
.adv-card p { color: var(--text-secondary); line-height: 1.8; font-size: .95rem; }

/* ===== Academy Flow ===== */
.academy-flow { display: flex; align-items: flex-start; gap: 0; margin-bottom: 16px; overflow-x: auto; padding-bottom: 16px; justify-content: center; flex-wrap: wrap; }
.academy-step { flex: 0 0 130px; text-align: center; padding: 24px 12px; background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius); transition: var(--transition); }
.academy-step:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.academy-step h4 { font-size: .9rem; margin-top: 8px; margin-bottom: 6px; color: #f1f5f9; }
.academy-step p { color: var(--text-secondary); font-size: .78rem; line-height: 1.6; }
.academy-arrow { flex: 0 0 30px; display: flex; align-items: center; justify-content: center; color: var(--accent-cyan); font-size: 1.3rem; font-weight: 700; padding-top: 30px; }

/* ===== Roadmap ===== */
.roadmap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.roadmap-card { background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px 28px; transition: var(--transition); position: relative; overflow: hidden; }
.roadmap-card:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow-glow); }
.roadmap-card.featured { border-color: rgba(139,92,246,0.35); background: linear-gradient(135deg, rgba(139,92,246,0.06), rgba(6,182,212,0.04)); }
.roadmap-year { display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .2em; color: var(--accent-cyan); margin-bottom: 16px; padding: 5px 16px; background: rgba(6,182,212,0.08); border: 1px solid rgba(6,182,212,0.15); border-radius: 6px; text-transform: uppercase; }
.roadmap-card h4 { font-size: 1.15rem; margin-bottom: 20px; color: #f1f5f9; }
.roadmap-card ul { display: flex; flex-direction: column; gap: 10px; }
.roadmap-card li { color: var(--text-secondary); font-size: .9rem; padding-left: 16px; position: relative; line-height: 1.7; }
.roadmap-card li::before { content: ''; position: absolute; left: 0; top: 9px; width: 5px; height: 5px; background: var(--accent-purple); border-radius: 50%; }

/* ===== Step Num ===== */
.step-num { width: 40px; height: 40px; margin: 0 auto 12px; background: var(--gradient-primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: .85rem; color: #fff; }

/* ===== Values ===== */
.values-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 700px; margin: 0 auto; }
.value-item { background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px 28px; text-align: center; transition: var(--transition); }
.value-item:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.value-icon { font-size: 2.8rem; margin-bottom: 16px; }
.value-item h4 { font-size: 1.15rem; margin-bottom: 10px; color: #f1f5f9; }
.value-item p { color: var(--text-secondary); font-size: .9rem; line-height: 1.7; }

/* ===== Biz Flow ===== */
.flow-steps { display: flex; align-items: stretch; justify-content: center; gap: 8px; margin-bottom: 40px; overflow-x: auto; padding-bottom: 16px; flex-wrap: wrap; }
.flow-step { flex: 0 0 200px; text-align: center; padding: 28px 20px; background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius); transition: var(--transition); }
.flow-step:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.flow-step.highlight { border-color: var(--border); background: var(--bg-card); }
.flow-step h4 { font-size: 1rem; margin-bottom: 8px; color: #f1f5f9; }
.flow-step p { color: var(--text-secondary); font-size: .8rem; line-height: 1.6; }
.flow-arrow { flex: 0 0 36px; display: flex; align-items: center; justify-content: center; color: var(--accent-cyan); font-size: 1.5rem; font-weight: 700; padding-top: 40px; }

/* ===== Core Loop ===== */
.loop-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.loop-item { background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 18px; text-align: center; transition: var(--transition); }
.loop-item:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.loop-item h4 { font-size: .95rem; margin: 12px 0 8px; color: #f1f5f9; }
.loop-item p { color: var(--text-secondary); font-size: .85rem; line-height: 1.6; }

/* ===== Solutions ===== */
.solutions-grid { display: flex; flex-wrap: wrap; gap: 24px; justify-content: center; }
.solutions-grid .solution-card { flex: 0 0 calc(25% - 18px); min-width: 240px; }
.solution-card { background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px 24px; transition: var(--transition); position: relative; overflow: hidden; }
.solution-card::before { content: ''; position: absolute; top: -50%; right: -50%; width: 200px; height: 200px; background: radial-gradient(circle, rgba(6,182,212,0.06), transparent 70%); transition: var(--transition); }
.solution-card:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow-glow); }
.solution-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 20px; }
.solution-icon { width: 52px; height: 52px; background: rgba(6,182,212,0.08); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--accent-cyan); }
.solution-num { font-size: 1.5rem; font-weight: 800; color: rgba(255,255,255,0.03); line-height: 1; }
.solution-card h3 { font-size: 1.15rem; margin-bottom: 12px; color: #f1f5f9; }
.solution-card > p { color: var(--text-secondary); font-size: .9rem; line-height: 1.7; }

/* ===== Institute ===== */
.service-matrix { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.matrix-item { background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 20px; text-align: center; transition: var(--transition); }
.matrix-item:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.matrix-item h4 { font-size: 1rem; margin-bottom: 12px; color: var(--accent-cyan); }
.matrix-item p { color: var(--text-secondary); font-size: .85rem; line-height: 1.7; }

/* ===== Industries ===== */
.industries-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.industry-card { background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 16px; text-align: center; transition: var(--transition); }
.industry-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.industry-card h4 { font-size: .9rem; margin-bottom: 8px; color: #f1f5f9; }
.industry-card p { color: var(--text-secondary); font-size: .8rem; line-height: 1.6; }

/* ===== Talent ===== */
.talent-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 20px; margin-bottom: 48px; }
.talent-card { background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px 32px; text-align: center; transition: var(--transition); display: flex; flex-direction: column; align-items: center; justify-content: flex-start; min-height: 240px; min-width: 0; }
.talent-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.talent-card h4 { font-size: 1.15rem; margin: 14px 0 12px; color: #f1f5f9; }
.talent-card p { color: var(--text-secondary); font-size: .95rem; line-height: 1.7; flex: 1; }
.academy-benefits { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.benefit-card { background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 18px; text-align: center; transition: var(--transition); }
.benefit-card:hover { border-color: var(--border-hover); }
.benefit-card h4 { font-size: .95rem; margin-bottom: 8px; color: #f1f5f9; }
.benefit-card p { color: var(--text-secondary); font-size: .85rem; line-height: 1.8; }

/* ===== Cases ===== */
.case-card { background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px; margin-bottom: 32px; transition: var(--transition); }
.case-card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-glow); }
.case-header { margin-bottom: 28px; }
.case-tag { display: inline-block; font-size: .85rem; padding: 6px 14px; background: rgba(6,182,212,0.08); border-radius: 6px; color: var(--accent-cyan); margin-bottom: 12px; }
.case-header h3 { font-size: 1.3rem; color: #f1f5f9; }
.case-body { display: grid; grid-template-columns: 1fr 1fr 1.5fr; gap: 32px; }
.case-problems h4, .case-solutions h4 { font-size: .85rem; color: var(--accent-purple); margin-bottom: 12px; text-transform: uppercase; letter-spacing: .06em; }
.case-problems ul, .case-solutions ul { display: flex; flex-direction: column; gap: 8px; }
.case-problems li { color: var(--text-secondary); font-size: .9rem; padding-left: 16px; position: relative; line-height: 1.6; }
.case-problems li::before { content: '✕'; position: absolute; left: 0; color: #f87171; font-size: .7rem; top: 2px; }
.case-solutions li { color: var(--text-secondary); font-size: .9rem; padding-left: 16px; position: relative; line-height: 1.6; }
.case-solutions li::before { content: '✓'; position: absolute; left: 0; color: #34d399; font-size: .75rem; top: 1px; }
.case-results { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.result-item { background: linear-gradient(135deg, rgba(59,130,246,0.06), rgba(139,92,246,0.04)); border: 1px solid rgba(59,130,246,0.12); border-radius: var(--radius); padding: 16px; text-align: center; display: flex; flex-direction: column; gap: 4px; }
.result-num { font-size: 1.5rem; font-weight: 800; background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.result-item span:last-child { font-size: .8rem; color: var(--text-secondary); }

/* ===== Standards ===== */
.standards-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.standard-card { background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius); padding: 34px 24px; transition: var(--transition); }
.standard-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.standard-card h4 { font-size: 1.05rem; margin-bottom: 12px; color: var(--accent-purple); }
.standard-card p { color: var(--text-secondary); font-size: .9rem; line-height: 1.7; }
.strategy-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.strategy-card { background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 38px 28px; transition: var(--transition); }
.strategy-card:hover { border-color: var(--border-hover); }

.strategy-card h4 { font-size: 1.2rem; margin-bottom: 20px; color: #f1f5f9; }
.strategy-card ul { display: flex; flex-direction: column; gap: 10px; }
.strategy-card li { color: var(--text-secondary); font-size: .9rem; padding-left: 16px; position: relative; line-height: 1.7; }
.strategy-card li::before { content: ''; position: absolute; left: 0; top: 9px; width: 5px; height: 5px; background: var(--accent-purple); border-radius: 50%; }
.vision-quote { text-align: center; margin-top: 48px; padding: 40px; background: linear-gradient(135deg, rgba(59,130,246,0.05), rgba(139,92,246,0.04)); border: 1px solid rgba(59,130,246,0.15); border-radius: var(--radius-lg); }
.vision-quote p { font-size: 1.15rem; color: var(--text-secondary); line-height: 1.8; max-width: 700px; margin: 0 auto; }

/* ===== Jobs ===== */
.jobs-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-bottom: 32px; }
.job-card { background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 20px; text-align: center; transition: var(--transition); display: flex; flex-direction: column; gap: 10px; }
.job-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.job-card h4 { font-size: .95rem; color: #f1f5f9; }
.job-card p { color: var(--text-secondary); font-size: .85rem; line-height: 1.6; }
.job-skill { display: inline-block; font-size: .84rem; color: var(--text-muted); background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.06); padding: 8px 14px; border-radius: 4px; line-height: 1.5; margin-top: auto; }
.ai-staff-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.ai-staff-card { background: var(--bg-card); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 20px; text-align: center; transition: var(--transition); }
.ai-staff-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.ai-staff-card h4 { font-size: .95rem; margin-bottom: 8px; color: #f1f5f9; }
.ai-staff-card p { color: var(--text-secondary); font-size: .85rem; line-height: 1.6; }

/* ===== Contact ===== */

/* 顶部联系方式卡片 */
.contact-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 48px; }
.contact-card { background: var(--bg-card); backdrop-filter: blur(12px); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px 24px; display: flex; flex-direction: column; align-items: center; text-align: center; transition: all .3s ease; position: relative; overflow: hidden; }
.contact-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan), var(--accent-purple)); opacity: 0; transition: opacity .3s; }
.contact-card:hover { transform: translateY(-4px); border-color: rgba(6,182,212,0.25); box-shadow: 0 12px 40px rgba(6,182,212,0.08); }
.contact-card:hover::before { opacity: 1; }
.cc-icon { width: 56px; height: 56px; border-radius: 14px; background: linear-gradient(135deg, rgba(6,182,212,0.12), rgba(139,92,246,0.12)); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; color: var(--accent-cyan); }
.cc-body h4 { font-size: .9rem; color: #94a3b8; margin-bottom: 6px; font-weight: 500; letter-spacing: .5px; }
.cc-body p { font-size: 1rem; color: #f1f5f9; font-weight: 600; margin-bottom: 4px; }
.cc-note { font-size: .72rem; color: var(--text-muted); font-style: italic; }

/* 双栏布局 */
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 48px; align-items: start; }

/* 左侧边栏 */
.contact-sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card { background: var(--bg-card); backdrop-filter: blur(12px); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px 28px; }
.sidebar-title { display: flex; align-items: center; gap: 10px; font-size: 1.05rem; color: #f1f5f9; margin-bottom: 12px; }
.sidebar-title svg { color: var(--accent-cyan); flex-shrink: 0; }
.sidebar-desc { color: var(--text-secondary); font-size: .9rem; line-height: 1.7; margin-bottom: 20px; }

.quick-links { display: flex; flex-direction: column; gap: 12px; }
.quick-link { display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: var(--bg-elevated); border-radius: 10px; color: var(--text-secondary); font-size: .9rem; text-decoration: none; transition: all .25s; border: 1px solid transparent; }
.quick-link:hover { background: rgba(6,182,212,0.06); border-color: rgba(6,182,212,0.2); color: var(--accent-cyan); }
.quick-link svg { margin-left: auto; opacity: 0; transform: translateX(-4px); transition: all .25s; }
.quick-link:hover svg { opacity: 1; transform: translateX(0); }
.ql-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-cyan); flex-shrink: 0; }

/* 快速响应卡片 */
.highlight-card { background: linear-gradient(135deg, rgba(6,182,212,0.05), rgba(139,92,246,0.05)); border-color: rgba(6,182,212,0.15); }
.highlight-badge { display: inline-flex; align-items: center; gap: 8px; font-size: .88rem; color: var(--accent-cyan); font-weight: 600; margin-bottom: 20px; }
.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-cyan); animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(6,182,212,0.4); } 50% { box-shadow: 0 0 0 8px rgba(6,182,212,0); } }
.promise-items { display: flex; gap: 16px; }
.promise-item { flex: 1; text-align: center; padding: 14px 8px; background: var(--bg-elevated); border-radius: 10px; border: 1px solid var(--border); }
.promise-num { display: block; font-size: 1.25rem; font-weight: 700; color: var(--accent-cyan); margin-bottom: 4px; }
.promise-label { display: block; font-size: .75rem; color: var(--text-muted); }

/* 右侧表单 */
.contact-form { background: var(--bg-card); backdrop-filter: blur(12px); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px 36px; position: relative; overflow: hidden; }
.contact-form::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan), var(--accent-purple)); }
.form-title { font-size: 1.2rem; color: #f1f5f9; margin-bottom: 6px; }
.form-subtitle { font-size: .85rem; color: var(--text-muted); margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group.full { margin-bottom: 16px; }
.form-group label { display: flex; align-items: center; gap: 6px; font-size: .85rem; color: var(--text-secondary); font-weight: 500; }
.form-group label svg { flex-shrink: 0; color: var(--accent-cyan); }
.required { color: #ef4444; margin-left: 2px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 13px 16px; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 10px; color: var(--text-primary); font-size: .9rem; font-family: inherit; transition: all .25s; outline: none; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--accent-cyan); box-shadow: 0 0 0 3px rgba(6,182,212,0.12); }
.form-group input::placeholder, .form-group textarea::placeholder { color: #475569; }
.form-group textarea { resize: vertical; min-height: 110px; }
.form-group select option { background: #1e293b; color: var(--text-primary); }

/* 提交按钮 */
.btn-submit { display: flex; align-items: center; justify-content: center; gap: 10px; padding: 14px 32px; font-size: 1rem; font-weight: 600; margin-top: 8px; position: relative; overflow: hidden; }
.btn-submit::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent); transform: translateX(-100%); transition: transform .5s; }
.btn-submit:hover::after { transform: translateX(100%); }
.btn-submit .btn-icon svg { display: block; transition: transform .3s; }
.btn-submit:hover .btn-icon svg { transform: rotate(-15deg) scale(1.1); }

.form-footnote { text-align: center; font-size: .78rem; color: var(--text-muted); margin-top: 20px; line-height: 1.6; }
.form-footnote a { color: var(--accent-cyan); text-decoration: underline; text-underline-offset: 3px; }
.form-footnote a:hover { color: #22d3ee; }

/* Toast 成功提示 */
.toast-success { display: none; position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: 5000; background: var(--bg-elevated); border: 1px solid rgba(6,182,212,0.3); border-radius: var(--radius-lg); padding: 48px 40px; text-align: center; max-width: 420px; width: 90%; backdrop-filter: blur(20px); box-shadow: 0 24px 80px rgba(0,0,0,0.5); }
.toast-success.active { display: block; animation: toastIn .35s ease-out; }
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, -45%); } to { opacity: 1; transform: translate(-50%, -50%); } }
.toast-icon { width: 72px; height: 72px; border-radius: 50%; background: linear-gradient(135deg, rgba(6,182,212,0.15), rgba(34,197,94,0.15)); display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; color: #22c55e; }
.toast-success h3 { font-size: 1.3rem; color: #f1f5f9; margin-bottom: 12px; }
.toast-success p { color: var(--text-secondary); font-size: .92rem; line-height: 1.7; margin-bottom: 24px; }
.btn-toast-close { padding: 10px 36px; font-size: .9rem; }

/* ═══════ AI 客服悬浮组件 ═══════ */
.ai-chat-widget { position: fixed; bottom: 28px; right: 28px; z-index: 9999; }

/* 悬浮按钮 (FAB) */
.ai-chat-fab {
  width: 60px; height: 60px; border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
  border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: #fff; box-shadow: 0 6px 28px rgba(59,130,246,0.45);
  transition: var(--transition); position: relative;
}
.ai-chat-fab:hover { transform: scale(1.08); box-shadow: 0 8px 36px rgba(59,130,246,0.6); }
.ai-chat-fab.hidden { display: none; }
.ai-fab-icon, .ai-fab-close-icon { display: flex; align-items: center; justify-content: center; }
.ai-fab-badge {
  position: absolute; top: -4px; right: -4px;
  width: 20px; height: 20px; border-radius: 50%;
  background: #ef4444; color: #fff; font-size: .7rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--bg-base);
}
.ai-fab-badge.hidden { display: none; }

/* 聊天窗口 */
.ai-chat-window {
  position: fixed; bottom: 100px; right: 28px;
  width: 380px; max-height: 520px;
  background: rgba(13,19,32,0.98); backdrop-filter: blur(24px);
  border: 1px solid rgba(255,255,255,0.1); border-radius: 18px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
  display: flex; flex-direction: column;
  overflow: hidden; opacity: 0; transform: translateY(20px) scale(0.95);
  pointer-events: none; transition: opacity .3s ease, transform .3s ease;
}
.ai-chat-window.active { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }

/* 窗口头部 */
.ai-chat-header {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 18px; border-bottom: 1px solid rgba(255,255,255,0.06);
  background: linear-gradient(135deg, rgba(59,130,246,0.12), rgba(6,182,212,0.08));
}
.ai-avatar {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  display: flex; align-items: center; justify-content: center; color: #fff; flex-shrink: 0;
}
.ai-header-info { flex: 1; display: flex; flex-direction: column; }
.ai-header-name { font-size: .92rem; font-weight: 700; color: #f1f5f9; }
.ai-header-status { font-size: .75rem; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
.ai-status-dot { width: 7px; height: 7px; border-radius: 50%; background: #22c55e; display: inline-block; }
.ai-chat-minimize {
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; padding: 4px; border-radius: 6px;
  display: flex; align-items: center; justify-content: center; transition: var(--transition);
}
.ai-chat-minimize:hover { background: rgba(255,255,255,0.08); color: #fff; }

/* 聊天内容区 */
.ai-chat-body {
  flex: 1; overflow-y: auto; padding: 18px 16px;
  display: flex; flex-direction: column; gap: 16px;
  scrollbar-width: thin; scrollbar-color: rgba(255,255,255,0.1) transparent;
}
.ai-chat-body::-webkit-scrollbar { width: 5px; }
.ai-chat-body::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 10px; }

/* 消息气泡 */
.ai-msg { display: flex; gap: 10px; max-width: 88%; animation: aiMsgIn .3s ease; }
@keyframes aiMsgIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.ai-msg-bot { align-self: flex-start; }
.ai-msg-user { align-self: flex-end; flex-direction: row-reverse; }
.ai-msg-avatar {
  width: 28px; height: 28px; border-radius: 8px; flex-shrink: 0;
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: .7rem;
}
.ai-msg-user .ai-msg-avatar {
  background: linear-gradient(135deg, #8b5cf6, #ec4899);
}
.ai-msg-bubble {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px 14px 14px 4px; padding: 12px 16px;
  font-size: .88rem; line-height: 1.7; color: var(--text-secondary);
}
.ai-msg-user .ai-msg-bubble {
  background: linear-gradient(135deg, rgba(59,130,246,0.18), rgba(6,182,212,0.12));
  border-color: rgba(59,130,246,0.25); border-radius: 14px 14px 4px 14px;
  color: #e2e8f0;
}
.ai-msg-bubble p { margin: 0; }

/* 快捷回复按钮 */
.ai-quick-replies { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.ai-quick-btn {
  padding: 7px 14px; border-radius: 100px;
  background: rgba(59,130,246,0.08); border: 1px solid rgba(59,130,246,0.25);
  color: var(--accent-cyan); font-size: .8rem; cursor: pointer;
  transition: var(--transition); white-space: nowrap;
}
.ai-quick-btn:hover { background: rgba(59,130,246,0.18); border-color: var(--accent-cyan); }

/* 输入中提示 */
.ai-typing { display: flex; gap: 4px; padding: 12px 16px; }
.ai-typing span {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--text-muted); animation: aiTyping 1.2s infinite;
}
.ai-typing span:nth-child(2) { animation-delay: .2s; }
.ai-typing span:nth-child(3) { animation-delay: .4s; }
@keyframes aiTyping { 0%,60%,100% { opacity: .3; transform: scale(0.8); } 30% { opacity: 1; transform: scale(1); } }

/* 底部输入栏 */
.ai-chat-footer {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 16px; border-top: 1px solid rgba(255,255,255,0.06);
}
.ai-chat-input {
  flex: 1; padding: 11px 16px; border-radius: 100px;
  background: var(--bg-elevated); border: 1px solid var(--border);
  color: var(--text-primary); font-size: .88rem; outline: none;
  font-family: inherit; transition: border-color .25s;
}
.ai-chat-input:focus { border-color: var(--accent-cyan); }
.ai-chat-input::placeholder { color: var(--text-muted); }
.ai-chat-send {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--gradient-primary); border: none;
  color: #fff; cursor: pointer; display: flex;
  align-items: center; justify-content: center;
  transition: var(--transition); flex-shrink: 0;
}
.ai-chat-send:hover { transform: scale(1.06); box-shadow: 0 4px 20px var(--accent-glow); }

/* 响应式 */
@media (max-width: 480px) {
  .ai-chat-widget { bottom: 16px; right: 16px; }
  .ai-chat-window { right: 8px; bottom: 84px; width: calc(100vw - 16px); max-height: 65vh; border-radius: 14px; }
  .ai-chat-fab { width: 54px; height: 54px; }
}
.footer { background: #060b14; border-top: 1px solid rgba(255,255,255,0.04); padding: 64px 0 32px; position: relative; z-index: 1; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { color: var(--text-secondary); font-size: .9rem; line-height: 1.8; }
.footer-col h4 { font-size: .95rem; margin-bottom: 16px; color: #e2e8f0; }
.footer-col a { display: block; color: var(--text-secondary); font-size: .9rem; padding: 4px 0; transition: color var(--transition); }
.footer-col a:hover { color: var(--accent-cyan); }
.footer-bottom { padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.04); text-align: center; display: flex; flex-direction: column; gap: 8px; }
.footer-bottom p { color: var(--text-muted); font-size: .85rem; }
.footer-bottom a { color: var(--accent-cyan); }

/* ===== Privacy Modal ===== */
.privacy-modal { display: none; position: fixed; inset: 0; z-index: 3000; background: rgba(0,0,0,0.7); backdrop-filter: blur(10px); align-items: center; justify-content: center; }
.privacy-modal.active { display: flex; }
.privacy-dialog { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px; max-width: 640px; width: 90%; max-height: 80vh; overflow-y: auto; position: relative; animation: fadeInUp .3s ease; }
.privacy-close { position: absolute; top: 16px; right: 20px; background: none; border: none; color: var(--text-muted); font-size: 1.8rem; cursor: pointer; transition: var(--transition); line-height: 1; }
.privacy-close:hover { color: #fff; }
.privacy-dialog h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 24px; color: #f1f5f9; }
.privacy-body h3 { font-size: 1rem; font-weight: 700; margin: 20px 0 8px; color: #f1f5f9; }
.privacy-body p { color: var(--text-secondary); font-size: .9rem; line-height: 1.8; margin-bottom: 8px; }

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .loop-grid { grid-template-columns: repeat(3, 1fr); }
  .service-matrix { grid-template-columns: repeat(3, 1fr); }
  .industries-grid { grid-template-columns: repeat(3, 1fr); }
  .talent-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .jobs-grid { grid-template-columns: repeat(3, 1fr); }
  .ai-staff-grid { grid-template-columns: repeat(3, 1fr); }
  .advantages-grid { grid-template-columns: 1fr; }
  .roadmap-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; }
  .solutions-grid .solution-card { flex: 0 0 calc(50% - 12px); min-width: 200px; }
  .academy-benefits { grid-template-columns: repeat(3, 1fr); }
  .case-body { grid-template-columns: 1fr 1fr; }
  .case-results { grid-template-columns: repeat(4, 1fr); }
  .standards-grid { grid-template-columns: repeat(2, 1fr); }
  .strategy-grid { grid-template-columns: 1fr; }
  .roadmap-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .academy-flow { flex-wrap: nowrap; overflow-x: auto; justify-content: flex-start; }
  .academy-step { flex: 0 0 120px; }
  .academy-arrow { flex: 0 0 22px; font-size: 1.1rem; }
}
@media (max-width: 768px) {
  .header { padding: 12px 0; }
  .header.scrolled { padding: 8px 0; }
  .nav { position: fixed; top: 0; right: -100%; width: 280px; height: 100vh; background: rgba(13,19,32,0.95); backdrop-filter: blur(20px); flex-direction: column; padding: 80px 32px 32px; gap: 0; transition: var(--transition); border-left: 1px solid var(--border); overflow-y: auto; align-items: stretch; }
  .nav.active { right: 0; }
  .menu-toggle { display: flex; z-index: 1001; }
  .nav-link { padding: 10px 16px; border-radius: 8px; font-size: .95rem; }
  .nav-link::after { display: none; }
  .hero { padding: 100px 0 60px; min-height: auto; }
  .hero-stats { gap: 20px; }
  .solutions-grid .solution-card { flex: 0 0 100%; min-width: auto; }
  .service-matrix { grid-template-columns: repeat(2, 1fr); }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .talent-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .academy-benefits { grid-template-columns: repeat(2, 1fr); }
  .loop-grid { grid-template-columns: repeat(2, 1fr); }
  .case-body { grid-template-columns: 1fr; }
  .case-results { grid-template-columns: repeat(2, 1fr); }
  .standards-grid { grid-template-columns: 1fr; }
  .roadmap-grid { grid-template-columns: 1fr; }
  .advantages-grid { grid-template-columns: 1fr; }
  .jobs-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-staff-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .flow-steps { flex-wrap: nowrap; overflow-x: auto; scroll-snap-type: x mandatory; }
  .flow-step { flex: 0 0 140px; scroll-snap-align: start; }
  .flow-arrow { flex: 0 0 24px; font-size: 1.2rem; }
  .section { padding: 40px 0; }
  .case-card { padding: 24px; }

}
@media (max-width: 480px) {
  .values-grid { grid-template-columns: 1fr; }
  .service-matrix { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: 1fr; }
  .talent-grid { grid-template-columns: minmax(0, 1fr); }
  .loop-grid { grid-template-columns: 1fr; }
  .jobs-grid { grid-template-columns: 1fr; }
  .ai-staff-grid { grid-template-columns: 1fr; }
  .academy-step { flex: 0 0 100px; }
  .academy-arrow { flex: 0 0 18px; }
  .hero-title { font-size: 2rem; }
  .contact-cards { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .promise-items { flex-direction: column; }
  .contact-form { padding: 28px 20px; }
  .toast-success { padding: 32px 24px; max-width: 320px; }
}

@media (min-width: 481px) and (max-width: 768px) {
  .contact-cards { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .promise-items { gap: 10px; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .contact-cards { grid-template-columns: repeat(2, 1fr); }
}