:root{--radius: 14px;--header-height: 80px;--max-width: 1200px;--bg: #f6fbff;--surface: #ffffff;--surface-2: #eef7ff;--border-soft: rgba(11, 34, 90, .08);--footer-bg: #eef6ff;--text-main: #0b1220;--text-sub: #566074;--muted: #566074;--accent: #3b82f6;--accent-2: #60a5fa;--shadow: 0 10px 30px rgba(11, 34, 90, .06);--glass: rgba(255, 255, 255, .75);--gb-50: #f1f5fd;--gb-100: #dee7fb;--gb-200: #c5d7f8;--gb-300: #9dbef3;--gb-600: #385bd8;--gb-700: #2d45be}.dp-root--light{--bg: #f6fbff;--surface: #ffffff;--text-main: #0b1220;--text-sub: #566074}.dp-root--light .dp-welcome-title,.dp-root--light .dp-card-title,.dp-root--light .dp-activity-title,.dp-root--light .dp-contest-name,.dp-root--light .dp-prob-title{color:#0b1220!important}.dp-root--light .dp-activity-meta,.dp-root--light .dp-contest-meta{color:#566074!important}.dp-root--light .dp-big-btn-ghost{color:#0b1220!important;border:1px solid var(--border-soft)}.dp-root--light .dp-big-btn-ghost .dp-big-btn-title,.dp-root--light .dp-big-btn-ghost .dp-big-btn-desc{color:#0b1220!important}.dp-root--light .dp-activity-item{background:var(--surface-2)!important;border-color:var(--border-soft)!important}.dp-root--dark{--bg: radial-gradient(circle at 50% -20%, #1e293b, #020617 60%);--surface: rgba(30, 41, 59, .4);--surface-2: rgba(15, 23, 42, .6);--text-main: #f8fafc;--text-sub: #94a3b8;--muted: #64748b;--shadow: 0 20px 40px -10px rgba(0, 0, 0, .5);--glass: rgba(15, 23, 42, .7);--footer-bg: transparent;--border-soft: rgba(255, 255, 255, .08);--gb-50: rgba(59, 130, 246, .1);--gb-100: rgba(59, 130, 246, .15);--gb-200: rgba(59, 130, 246, .25);--gb-600: #60a5fa}body,html{height:100%;margin:0;padding:0}.dp-root{min-height:100vh;background:var(--bg);color:var(--text-main);display:flex;flex-direction:column;font-family:Inter,system-ui,-apple-system,sans-serif;transition:color .2s ease,background .2s ease}.dp-main{max-width:var(--max-width);width:100%;margin:24px auto;padding:0 20px 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#0b225a0f;cursor:pointer;display:flex;align-items:center;justify-content:center}.dp-user-block{display:flex;gap:10px;align-items:center}.dp-user-name{font-weight:700;color:var(--text-main)}.dp-logout-btn{padding:8px 12px;border-radius:999px;border:1px solid var(--border-soft);background:transparent;color:var(--accent-2);cursor:pointer;transition:all .18s}.dp-logout-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow);background:linear-gradient(135deg,#3b82f60f,#60a5fa0a)}.dp-hero{display:flex;gap:22px;align-items:flex-start}.dp-hero-left{flex:1}.dp-hero-head{margin-bottom:22px}.dp-welcome-title{margin:0;font-size:1.8rem;font-weight:900;line-height:1.02}.dp-welcome-sub{margin:8px 0 18px;color:var(--text-sub)}.dp-hero-actions{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.dp-big-btn{display:flex;align-items:center;gap:16px;padding:22px 26px;border-radius:12px;background:linear-gradient(90deg,var(--accent),var(--accent-2));color:#fff;border:0;min-width:420px;max-width:720px;box-shadow:0 18px 40px #0b225a14;cursor:pointer;text-align:left}.dp-big-btn-ghost{background:linear-gradient(180deg,#f3e6a0c4,#a2fbb0d9);color:var(--text-main);border:1px solid var(--border-soft);box-shadow:0 20px 18px #1651e80d}.dp-big-btn-left{width:64px;height:64px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:28px;background:#ffffff1f}.dp-big-btn-title{font-weight:800;font-size:1.05rem;margin-bottom:6px}.dp-big-btn-desc{font-size:.95rem}.dp-btn{border-radius:999px;padding:8px 14px;border:0;background:transparent;cursor:pointer;font-weight:700}.dp-btn-solid{background:linear-gradient(90deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 10px 30px #3b82f61f}.dp-icon-action{font-size:1.2rem;color:var(--gb-300);transition:transform .2s ease,color .2s 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