/* ===== Variables ===== */
:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #dbeafe;
  --color-primary-subtle: #eff6ff;
  --color-text: #1e293b;
  --color-text-secondary: #475569;
  --color-text-muted: #94a3b8;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-bg-dark: #0f172a;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-success: #16a34a;
  --color-warning: #f59e0b;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.1);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max-width: 1140px;
}

/* ===== Reset ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img,svg{display:block;max-width:100%}

/* ===== Container ===== */
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--color-border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.125rem;color:var(--color-text)}
.logo-icon{flex-shrink:0}
.header-nav{display:flex;gap:28px}
.header-nav a{font-size:0.875rem;color:var(--color-text-secondary);font-weight:500;transition:color .2s}
.header-nav a:hover{color:var(--color-primary)}

.mobile-menu-btn{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.mobile-menu-btn span{display:block;width:22px;height:2px;background:var(--color-text);border-radius:2px;transition:transform .2s}

/* ===== Section common ===== */
.section-label{font-size:0.8125rem;font-weight:600;color:var(--color-primary);text-transform:uppercase;letter-spacing:0.06em;margin-bottom:10px}
section h2{font-size:1.875rem;font-weight:700;line-height:1.25;margin-bottom:16px;color:var(--color-text)}
.section-desc{color:var(--color-text-secondary);max-width:640px;margin-bottom:40px;font-size:0.9375rem}

/* ===== Badge ===== */
.badge{display:inline-block;font-size:0.75rem;font-weight:600;padding:4px 12px;border-radius:20px;background:var(--color-primary-light);color:var(--color-primary);letter-spacing:0.02em}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 24px;font-size:0.875rem;font-weight:600;border-radius:var(--radius-sm);transition:all .2s;border:none;cursor:pointer}
.btn-primary{background:var(--color-primary);color:#fff}
.btn-primary:hover{background:var(--color-primary-dark)}
.btn-secondary{background:transparent;color:var(--color-primary);border:1.5px solid var(--color-primary)}
.btn-secondary:hover{background:var(--color-primary-subtle)}

/* ===== Hero ===== */
.hero{padding:80px 0 64px;background:var(--color-bg)}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.hero-content .badge{margin-bottom:20px}
.hero h1{font-size:2.25rem;font-weight:800;line-height:1.2;margin-bottom:18px;letter-spacing:-0.02em}
.hero-desc{color:var(--color-text-secondary);font-size:1rem;line-height:1.7;margin-bottom:28px;max-width:520px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}

/* Hero Mockup */
.hero-visual{display:flex;justify-content:center}
.mockup-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);width:100%;max-width:420px}
.mockup-topbar{display:flex;align-items:center;gap:6px;padding:12px 16px;background:var(--color-bg-alt);border-bottom:1px solid var(--color-border)}
.dot{width:8px;height:8px;border-radius:50%}
.dot:nth-child(1){background:#ef4444}
.dot:nth-child(2){background:#f59e0b}
.dot:nth-child(3){background:#22c55e}
.mockup-title-bar{margin-left:10px;font-size:0.75rem;font-weight:600;color:var(--color-text-secondary)}
.mockup-body{padding:20px}
.mockup-stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:20px}
.mockup-stat{background:var(--color-primary-subtle);border-radius:var(--radius-sm);padding:14px 12px;text-align:center}
.stat-num{display:block;font-size:1.375rem;font-weight:700;color:var(--color-primary)}
.stat-label{display:block;font-size:0.6875rem;color:var(--color-text-muted);margin-top:2px}
.mockup-bar-chart{display:flex;align-items:flex-end;gap:10px;height:80px;padding:8px 4px;background:var(--color-bg-alt);border-radius:var(--radius-sm)}
.mockup-bar-chart .bar{flex:1;background:var(--color-primary);border-radius:3px 3px 0 0;opacity:0.7;min-height:12px}

/* ===== About ===== */
.about{padding:80px 0;background:var(--color-bg-alt)}
.about-inner{max-width:900px}
.about-columns{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-top:8px}
.about-col p{color:var(--color-text-secondary);font-size:0.9375rem;line-height:1.75}

/* ===== Features ===== */
.features{padding:80px 0;background:var(--color-bg)}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-md);padding:28px 24px;transition:box-shadow .2s,border-color .2s}
.feature-card:hover{box-shadow:var(--shadow-md);border-color:var(--color-primary-light)}
.feature-icon{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--color-primary-subtle);border-radius:var(--radius-sm);color:var(--color-primary);margin-bottom:16px}
.feature-card h3{font-size:1rem;font-weight:700;margin-bottom:10px}
.feature-card p{color:var(--color-text-secondary);font-size:0.8125rem;line-height:1.65}

/* ===== Workflow ===== */
.workflow{padding:80px 0;background:var(--color-bg-alt)}
.workflow-steps{display:flex;align-items:flex-start;gap:0;justify-content:center;flex-wrap:wrap}
.workflow-step{text-align:center;flex:0 1 200px;padding:0 12px}
.step-number{width:40px;height:40px;border-radius:50%;background:var(--color-primary);color:#fff;font-weight:700;font-size:1rem;display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.workflow-step h3{font-size:0.9375rem;font-weight:700;margin-bottom:8px}
.workflow-step p{color:var(--color-text-secondary);font-size:0.8125rem;line-height:1.6}
.workflow-connector{width:48px;height:2px;background:var(--color-border);margin-top:20px;flex-shrink:0}

/* ===== Dashboard Mockup ===== */
.tool-preview{padding:80px 0;background:var(--color-bg)}
.dashboard-mockup{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}

.dash-topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;background:var(--color-bg-dark);color:#fff}
.dash-topbar-left{display:flex;align-items:center;gap:10px;font-weight:600;font-size:0.875rem}
.dash-topbar-right{display:flex;align-items:center;gap:12px}
.dash-topbar-badge{font-size:0.625rem;font-weight:600;padding:3px 8px;border-radius:10px;background:rgba(255,255,255,0.15);color:rgba(255,255,255,0.8);letter-spacing:0.04em}
.dash-avatar{width:26px;height:26px;border-radius:50%;background:var(--color-primary)}

.dash-body{display:grid;grid-template-columns:180px 1fr;min-height:420px}
.dash-sidebar{background:var(--color-bg-alt);border-right:1px solid var(--color-border);padding:16px 0}
.dash-nav-item{display:flex;align-items:center;gap:8px;padding:9px 20px;font-size:0.75rem;font-weight:500;color:var(--color-text-secondary);cursor:default}
.dash-nav-item.active{color:var(--color-primary);background:var(--color-primary-subtle);border-right:2px solid var(--color-primary);font-weight:600}

.dash-main{padding:20px 24px;overflow-x:auto}
.dash-summary-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}
.dash-summary-card{background:var(--color-bg-alt);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:16px;text-align:center}
.dash-summary-label{display:block;font-size:0.6875rem;color:var(--color-text-muted);margin-bottom:4px}
.dash-summary-value{display:block;font-size:1.375rem;font-weight:700;color:var(--color-text)}

.dash-panels{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.dash-panel{border:1px solid var(--color-border);border-radius:var(--radius-sm);overflow:hidden}
.dash-panel-full{grid-column:1/-1}
.dash-panel-header{padding:12px 16px;font-size:0.8125rem;font-weight:700;background:var(--color-bg-alt);border-bottom:1px solid var(--color-border)}

.dash-table{font-size:0.75rem}
.dash-table-header{display:grid;grid-template-columns:2fr 1fr 1fr;padding:8px 16px;background:var(--color-bg-alt);font-weight:600;color:var(--color-text-muted);border-bottom:1px solid var(--color-border-light)}
.dash-table-row{display:grid;grid-template-columns:2fr 1fr 1fr;padding:10px 16px;border-bottom:1px solid var(--color-border-light);align-items:center}
.dash-table-row:last-child{border-bottom:none}

.kw-header{grid-template-columns:2.5fr 1.5fr 1fr 1fr}
.kw-row{grid-template-columns:2.5fr 1.5fr 1fr 1fr}

.status-badge{font-size:0.6875rem;font-weight:600;padding:2px 8px;border-radius:10px}
.status-active{background:#dcfce7;color:#16a34a}
.status-paused{background:#fef9c3;color:#a16207}
.comp-low{color:#16a34a;font-weight:600}
.comp-med{color:#f59e0b;font-weight:600}

.dash-chart-area{padding:16px}
.dash-chart-bars{display:flex;align-items:flex-end;gap:14px;height:120px;padding-bottom:24px;position:relative}
.dash-chart-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;height:100%}
.dash-chart-col{justify-content:flex-end}
.dash-chart-bar{width:100%;background:var(--color-primary);border-radius:3px 3px 0 0;opacity:0.65}
.dash-chart-col span{font-size:0.625rem;color:var(--color-text-muted)}
.dash-chart-legend{text-align:center;margin-top:4px}
.dash-chart-legend span{font-size:0.6875rem;color:var(--color-text-muted)}

/* ===== Internal Use ===== */
.internal-use{padding:72px 0;background:var(--color-primary-subtle)}
.internal-use-inner{max-width:640px;margin:0 auto;text-align:center}
.internal-use-icon{width:56px;height:56px;display:flex;align-items:center;justify-content:center;background:var(--color-primary-light);color:var(--color-primary);border-radius:50%;margin:0 auto 20px}
.internal-use h2{margin-bottom:16px}
.internal-use p{color:var(--color-text-secondary);font-size:0.9375rem;line-height:1.75;margin-bottom:10px}

/* ===== Footer ===== */
.site-footer{padding:48px 0 0;background:var(--color-bg-dark);color:#cbd5e1}
.footer-main{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.08)}
.footer-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1rem;color:#fff;margin-bottom:10px}
.footer-tagline{font-size:0.8125rem;color:#94a3b8;line-height:1.6}
.footer-contact h4,.footer-links-col h4{font-size:0.8125rem;font-weight:600;color:#e2e8f0;margin-bottom:12px}
.footer-contact a{color:var(--color-primary);font-size:0.8125rem}
.footer-contact a:hover{text-decoration:underline}
.footer-links-col ul{display:flex;flex-direction:column;gap:8px}
.footer-links-col a{font-size:0.8125rem;color:#94a3b8;transition:color .2s}
.footer-links-col a:hover{color:#fff}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding:20px 0;font-size:0.75rem;color:#64748b}
.footer-bottom-links{display:flex;gap:20px}
.footer-bottom-links a{color:#64748b;transition:color .2s}
.footer-bottom-links a:hover{color:#94a3b8}

/* ===== Responsive ===== */

/* Tablet */
@media(max-width:1200px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
}

@media(max-width:768px){
  .header-nav{display:none;position:absolute;top:60px;left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--color-border);padding:16px 24px;gap:12px;box-shadow:var(--shadow-md)}
  .header-nav.open{display:flex}
  .mobile-menu-btn{display:flex}

  .hero{padding:56px 0 48px}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:1.75rem}
  .hero-visual{order:-1}
  .mockup-card{max-width:100%}

  .about-columns{grid-template-columns:1fr}
  .features-grid{grid-template-columns:1fr 1fr}

  .workflow-steps{flex-direction:column;align-items:center}
  .workflow-connector{width:2px;height:32px;margin:0}
  .workflow-step{flex-basis:auto;max-width:280px}

  .dash-body{grid-template-columns:1fr}
  .dash-sidebar{display:flex;overflow-x:auto;border-right:none;border-bottom:1px solid var(--color-border);padding:8px 0}
  .dash-nav-item{white-space:nowrap;padding:8px 16px}
  .dash-nav-item.active{border-right:none;border-bottom:2px solid var(--color-primary)}
  .dash-summary-row{grid-template-columns:repeat(2,1fr)}
  .dash-panels{grid-template-columns:1fr}

  .footer-main{grid-template-columns:1fr;gap:28px}
}

@media(max-width:480px){
  section h2{font-size:1.5rem}
  .hero h1{font-size:1.5rem}
  .hero-actions{flex-direction:column}
  .btn{width:100%;justify-content:center}
  .features-grid{grid-template-columns:1fr}
  .mockup-stat-row{grid-template-columns:1fr}
  .dash-summary-row{grid-template-columns:1fr}
  .kw-header,.kw-row{grid-template-columns:2fr 1fr}
  .kw-header span:nth-child(3),.kw-header span:nth-child(4),
  .kw-row span:nth-child(3),.kw-row span:nth-child(4){display:none}
  .footer-bottom{flex-direction:column;gap:10px;text-align:center}
}