:root{--color-bg:#f7f9fc;--color-bg-soft:#fff;--color-primary:#0b2345;--color-primary-soft:#143867;--color-text:#1d1f23;--color-text-muted:#67738a;--color-border:#e7edf5;--color-border-soft:#edf2f9;--color-accent:#3b82f6;--color-accent-bg:#e9f1ff;--radius-lg:22px;--radius-md:16px;--radius-sm:12px;--radius-pill:999px;--shadow-soft:0 18px 40px rgba(15,35,69,.08)}*{box-sizing:border-box}body{background:var(--color-bg);color:var(--color-text);font-family:Inter,system-ui,-apple-system,sans-serif;margin:0}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}.container{margin:0 auto;max-width:1160px;padding:0 20px}.hidden{display:none!important}.site-header{-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#ffffffe6;border-bottom:1px solid var(--color-border-soft);position:sticky;top:0;z-index:10}.header-inner{align-items:center;display:flex;gap:16px;justify-content:space-between;padding:16px 0}.logo{color:var(--color-primary);display:flex;flex-direction:column;font-size:18px;font-weight:700;letter-spacing:-.02em}.logo-sub{font-size:12px;font-weight:500}.logo-sub,.main-nav{color:var(--color-text-muted)}.main-nav{display:flex;font-size:14px;gap:18px}.main-nav a{padding-bottom:4px;position:relative}.main-nav a:after{background:var(--color-accent);bottom:0;content:"";height:2px;left:0;position:absolute;transition:width .2s ease;width:0}.main-nav a:focus-visible:after,.main-nav a:hover:after{width:100%}.header-actions{gap:12px}.header-actions,.lang-switch{align-items:center;display:flex}.lang-switch{color:var(--color-text-muted);font-size:12px;gap:6px}.lang-switch a{border-radius:8px;padding:4px 6px}.lang-switch a.is-active{background:var(--color-accent-bg);color:var(--color-primary)}.lang-divider{color:#ccd3df}.btn{align-items:center;border:1px solid transparent;border-radius:var(--radius-pill);cursor:pointer;display:inline-flex;font-size:13px;gap:8px;justify-content:center;padding:10px 18px;transition:.2s ease}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-soft)}.btn-outline{background:transparent;border-color:#0b234533;color:var(--color-primary)}.btn-outline:hover{background:var(--color-accent-bg)}.btn-ghost{background:transparent;color:var(--color-text-muted)}.btn-full{width:100%}.hero{padding:54px 0 70px}.hero-inner{align-items:start;display:grid;gap:32px;grid-template-columns:repeat(2,minmax(0,1fr))}.hero-title{color:var(--color-primary);font-size:40px;letter-spacing:-.03em;margin:0 0 16px}.hero-subtitle{color:var(--color-text-muted);font-size:16px;line-height:1.65;margin:0 0 20px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px}.ai-panel,.auth-card,.chat-card,.dashboard-card,.history-board{background:#fff;border:1px solid var(--color-border-soft);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft)}.hero-image-card{align-items:center;background:transparent;border:none;border-radius:0;display:flex;justify-content:center;min-height:360px;padding:0}.hero-image-card img{border-radius:0;height:auto;width:100%}.auth-card{padding:20px 22px}.auth-title{color:var(--color-primary);font-size:18px;margin:0 0 6px}.auth-subtitle{color:var(--color-text-muted);font-size:13px;margin:0 0 16px}.field{display:flex;flex-direction:column;gap:6px}.field-label{color:var(--color-text-muted);font-size:12px}.field-input,.field-select,.field-textarea{border:1px solid var(--color-border);border-radius:var(--radius-md);font-family:inherit;font-size:14px;padding:10px 12px;width:100%}.field-input:focus,.field-select:focus,.field-textarea:focus{border-color:var(--color-accent);box-shadow:0 0 0 3px #3b82f626;outline:none}.auth-footer{display:flex;flex-direction:column;gap:10px;margin-top:14px}.auth-hint{color:var(--color-text-muted);font-size:12px}.cta-cards{padding:10px 0 70px}.cards-grid{display:grid;gap:16px;grid-template-columns:repeat(3,minmax(0,1fr))}.cta-card{background:#fff;border:1px solid var(--color-border-soft);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);padding:18px 18px 22px;transition:transform .2s ease}.cta-card:hover{transform:translateY(-2px)}.cta-title{color:var(--color-primary);font-size:16px;margin:8px 0 6px}.cta-subtitle{color:var(--color-text-muted);font-size:13px}.dashboard{padding:40px 0 80px}.dashboard-header{align-items:flex-end;display:flex;gap:16px;justify-content:space-between;margin-bottom:20px}.dashboard-title{color:var(--color-primary);font-size:28px;margin:0 0 6px}.dashboard-subtitle{color:var(--color-text-muted);font-size:14px;margin:0}.dashboard-user-pill{background-color:var(--color-accent-bg);border-radius:var(--radius-pill);color:var(--color-primary);font-size:11px;letter-spacing:.12em;padding:6px 14px;text-transform:uppercase}.tabs{border-bottom:1px solid var(--color-border-soft);display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;padding-bottom:4px}.tab-button{background-color:transparent;border:1px solid transparent;border-radius:var(--radius-pill);color:var(--color-text-muted);cursor:pointer;font-size:12px;letter-spacing:.12em;padding:7px 18px;text-transform:uppercase}.tab-button.is-active{background-color:var(--color-primary);border-color:var(--color-primary);color:#fff}.tab-panel{display:none}.tab-panel.is-active{display:block}.ai-layout{align-items:start;display:grid;gap:20px;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.ai-panel{padding:18px}.ai-panel-title{color:var(--color-primary);font-size:16px;margin:0 0 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12px}.history-item.is-active{border-color:#0b234559}.history-item-title{font-size:13px;font-weight:600}.history-item-date{color:var(--color-text-muted);font-size:12px}.alert{align-items:center;background:#fff1f1;border:1px solid #ffd1d1;border-radius:12px;color:#8b1a1a;display:flex;font-size:14px;font-weight:500;gap:8px;padding:14px 16px}.alert-info{background:#e9f1ff;border-color:#b3d4ff;color:#0b2345}.alert-warning{background:#fff4e6;border-color:#ffd699;color:#8b5a00}@media(max-width:980px){.ai-layout,.cards-grid,.hero-inner{grid-template-columns:1fr}}