:root{
  --bg:#eef3f8;
  --surface:#ffffff;
  --surface-soft:#f8fbff;
  --text:#14213d;
  --muted:#5b6577;
  --line:#d8e2ee;
  --primary:#1d4ed8;
  --primary-strong:#163da8;
  --accent:#0f766e;
  --shadow:0 14px 40px rgba(18, 38, 63, 0.08);
  --radius-xl:24px;
  --radius-lg:18px;
  --radius-md:14px;
  --container:1160px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--text);
  background:
    radial-gradient(circle at top left, rgba(29,78,216,0.10), transparent 28%),
    radial-gradient(circle at top right, rgba(15,118,110,0.10), transparent 26%),
    linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
  font-family:"Inter","Segoe UI",sans-serif;
  line-height:1.6;
}

a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-strong)}
img{max-width:100%;display:block}

.site-shell{width:min(100% - 32px, var(--container));margin:0 auto}
.site-header{position:sticky;top:0;z-index:1030;backdrop-filter:blur(14px);background:rgba(255,255,255,0.84);border-bottom:1px solid rgba(216,226,238,0.85)}
.site-header__inner{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:14px;color:var(--text);font-weight:800;letter-spacing:-0.03em}
.brand img{width:112px;height:auto}
.site-nav{display:flex;align-items:center;flex-wrap:wrap;gap:10px}
.site-nav a{color:var(--muted);font-weight:600;padding:10px 14px;border-radius:999px;transition:background-color .2s ease,color .2s ease}
.site-nav a:hover,.site-nav a.is-active{color:var(--primary);background:rgba(29,78,216,0.08)}
.header-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.lang-switch{display:inline-flex;align-items:center;gap:6px;padding:6px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,0.96)}
.lang-switch a,.lang-switch span{min-width:52px;text-align:center;padding:8px 12px;border-radius:999px;font-size:14px;font-weight:700;color:var(--muted)}
.lang-switch .is-active{background:var(--primary);color:#fff}
.button-primary,.button-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:14px;font-weight:700;border:1px solid transparent;transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease}
.button-primary{color:#fff;background:linear-gradient(135deg, var(--primary) 0%, var(--primary-strong) 100%);box-shadow:0 10px 24px rgba(29,78,216,0.20)}
.header-actions .button-primary{min-width:132px}
.button-secondary{color:var(--text);background:#fff;border-color:var(--line)}
.button-primary:hover,.button-secondary:hover{transform:translateY(-1px)}
.hero{padding:54px 0 28px}
.hero__panel{background:linear-gradient(135deg, rgba(20,33,61,0.96) 0%, rgba(29,78,216,0.92) 58%, rgba(15,118,110,0.82) 100%);color:#fff;border-radius:32px;padding:56px;box-shadow:var(--shadow)}
.hero__eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;margin-bottom:18px;border-radius:999px;background:rgba(255,255,255,0.12);font-size:14px;font-weight:700;letter-spacing:0.02em}
.hero h1{margin:0 0 16px;font-size:clamp(2.1rem, 5vw, 4rem);line-height:1.05;letter-spacing:-0.05em}
.hero p{margin:0;max-width:760px;color:rgba(255,255,255,0.86);font-size:1.08rem}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.page-main{padding:34px 0 72px}
.page-card,.feature-card,.info-card,.auth-card{background:var(--surface);border:1px solid rgba(216,226,238,0.9);border-radius:var(--radius-xl);box-shadow:var(--shadow)}
.page-card{padding:34px}
.section-title{margin:0 0 10px;font-size:clamp(1.8rem, 4vw, 2.7rem);line-height:1.1;letter-spacing:-0.04em}
.section-subtitle{margin:0 0 28px;color:var(--muted);max-width:760px}
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2, minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3, minmax(0,1fr))}
.feature-card,.info-card{padding:24px;height:100%}
.feature-card h3,.info-card h3,.page-card h2{margin-top:0;margin-bottom:10px;letter-spacing:-0.03em}
.feature-card p,.info-card p,.page-card p,.page-card li{color:var(--muted)}
.team-grid{display:grid;grid-template-columns:repeat(3, minmax(0,1fr));gap:22px}
.team-card{text-align:center;padding:24px;border-radius:var(--radius-lg);background:var(--surface-soft);border:1px solid var(--line)}
.team-card img{width:112px;height:112px;margin:0 auto 16px;border-radius:50%;object-fit:cover;border:4px solid #fff;box-shadow:0 10px 24px rgba(20,33,61,0.10)}
.metric-row{display:grid;grid-template-columns:repeat(4, minmax(0,1fr));gap:18px;margin-top:26px}
.metric{padding:20px;border-radius:18px;background:rgba(255,255,255,0.12)}
.metric strong{display:block;font-size:2rem;line-height:1;margin-bottom:8px}
.site-footer{padding:0 0 46px}
.site-footer__panel{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;padding:26px 30px;background:rgba(255,255,255,0.92);border:1px solid rgba(216,226,238,0.95);border-radius:22px;box-shadow:var(--shadow)}
.footer-links{display:flex;flex-wrap:wrap;gap:14px 18px}
.footer-note{color:var(--muted)}
.form-stack{display:grid;gap:16px}
.form-grid{display:grid;grid-template-columns:repeat(2, minmax(0,1fr));gap:16px}
.label{display:block;margin-bottom:8px;font-weight:700;color:var(--text)}
.input,.textarea{width:100%;padding:14px 16px;border:1px solid var(--line);border-radius:14px;background:#fff;font:inherit;color:var(--text)}
.textarea{min-height:140px;resize:vertical}
.auth-card{width:min(100%, 560px);margin:40px auto 72px;padding:30px}
.tabs{display:grid;grid-template-columns:repeat(2,1fr);margin-bottom:22px;padding:6px;border-radius:18px;background:var(--surface-soft)}
.tab-link{text-align:center;padding:12px;border-radius:12px;font-weight:700;color:var(--muted)}
.tab-link.is-active{background:#fff;color:var(--primary);box-shadow:0 8px 18px rgba(20,33,61,0.06)}
.list-clean{margin:0;padding-left:18px}
.list-clean li + li{margin-top:8px}
.muted{color:var(--muted)}
.dashboard-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:24px}
.dashboard-sidebar,.dashboard-content{background:var(--surface);border:1px solid rgba(216,226,238,0.9);border-radius:var(--radius-xl);box-shadow:var(--shadow)}
.dashboard-sidebar{padding:22px;position:sticky;top:104px;align-self:start}
.dashboard-content{padding:30px}
.sidebar-title{margin:0 0 18px;font-size:1.1rem;letter-spacing:-0.03em}
.sidebar-nav{display:grid;gap:10px}
.sidebar-nav a{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-radius:14px;color:var(--muted);font-weight:700;background:transparent;transition:background-color .2s ease,color .2s ease}
.sidebar-nav a:hover,.sidebar-nav a.is-active{background:rgba(29,78,216,0.08);color:var(--primary)}
.dashboard-hero{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;flex-wrap:wrap;margin-bottom:24px}
.dashboard-hero__text{max-width:720px}
.dashboard-hero__actions{display:flex;gap:12px;flex-wrap:wrap}
.profile-badge{display:inline-flex;padding:8px 14px;border-radius:999px;background:rgba(29,78,216,0.08);color:var(--primary);font-weight:700;margin-bottom:12px}
.stat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.stat-card{padding:20px;border-radius:18px;background:var(--surface-soft);border:1px solid var(--line)}
.stat-card strong{display:block;font-size:1.8rem;line-height:1;margin-bottom:8px}
.stack-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.smart-upload{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:16px;align-items:end}
.smart-history-item{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;flex-wrap:wrap}
.smart-history-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

@media (max-width: 992px){
  .site-header__inner{padding:14px 0}
  .site-nav{width:100%}
  .hero__panel{padding:34px}
  .grid-3,.team-grid,.metric-row,.stat-grid{grid-template-columns:repeat(2, minmax(0,1fr))}
  .dashboard-layout{grid-template-columns:1fr}
  .dashboard-sidebar{position:static;top:auto}
}

@media (max-width: 768px){
  .site-shell{width:min(100% - 20px, var(--container))}
  .site-header__inner{gap:14px}
  .site-nav{gap:6px}
  .site-nav a{padding:8px 12px;font-size:14px}
  .lang-switch a,.lang-switch span{min-width:44px;padding:8px 10px}
  .page-card{padding:22px}
  .grid-2,.grid-3,.team-grid,.metric-row,.form-grid,.stat-grid,.smart-upload{grid-template-columns:1fr}
  .hero{padding-top:28px}
  .hero__panel{padding:24px;border-radius:24px}
  .dashboard-content,.dashboard-sidebar{padding:20px}
}