:root{--tnth-bg:#f7f9fc;--tnth-card:#fff;--tnth-text:#172033;--tnth-muted:#667085;--tnth-border:#e6eaf0;--tnth-primary:#4f46e5;--tnth-primary-dark:#3f37c9;--tnth-soft:#eef2ff;--tnth-green:#16a34a;--tnth-red:#dc2626;--tnth-radius:22px;--tnth-shadow:0 10px 30px rgba(31,41,55,.07)}*{box-sizing:border-box}body{margin:0;background:var(--tnth-bg);color:var(--tnth-text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto}.tnth-container{width:min(1160px,calc(100% - 32px));margin:auto}.tnth-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);border-bottom:1px solid var(--tnth-border);backdrop-filter:blur(12px)}.tnth-header-inner{height:72px;display:flex;align-items:center;gap:28px}.tnth-logo-text{font-weight:900;font-size:20px;color:var(--tnth-primary)}.custom-logo{max-height:46px;width:auto}.tnth-nav{margin-left:auto}.tnth-menu{display:flex;gap:24px;align-items:center;list-style:none;margin:0;padding:0}.tnth-menu a{font-weight:700;font-size:14px}.tnth-menu a:hover{color:var(--tnth-primary)}.tnth-menu-toggle{display:none;border:0;background:transparent;font-size:26px;margin-left:auto}.tnth-hero{background:linear-gradient(135deg,#eef2ff,#f0fdf4 70%,#fff7ed);border-bottom:1px solid var(--tnth-border)}.tnth-hero-inner{display:grid;grid-template-columns:1.45fr .55fr;gap:48px;align-items:center;padding:72px 0}.tnth-badge,.tnth-eyebrow{display:inline-flex;color:var(--tnth-primary);font-weight:800;font-size:13px}.tnth-hero h1,.tnth-page-head h1,.tnth-quiz-intro h1{font-size:clamp(34px,5vw,58px);line-height:1.05;margin:16px 0}.tnth-hero p,.tnth-lead{font-size:18px;color:var(--tnth-muted);max-width:720px}.tnth-hero-actions{display:flex;gap:12px;margin-top:28px}.tnth-btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:14px;background:var(--tnth-primary);color:#fff;padding:13px 20px;font-weight:800;cursor:pointer}.tnth-btn:hover{background:var(--tnth-primary-dark)}.tnth-btn-small{padding:9px 14px;font-size:13px}.tnth-btn-ghost{background:#fff;color:var(--tnth-text);border:1px solid var(--tnth-border)}.tnth-btn-ghost:hover{background:#f8fafc}.tnth-hero-panel{background:#fff;border:1px solid var(--tnth-border);border-radius:28px;padding:24px;box-shadow:var(--tnth-shadow)}.tnth-hero-stat{display:flex;align-items:center;justify-content:space-between;padding:15px 4px;border-bottom:1px dashed var(--tnth-border)}.tnth-hero-stat:last-child{border:0}.tnth-hero-stat strong{font-size:26px;color:var(--tnth-primary)}.tnth-section{padding:64px 0}.tnth-soft{background:#fff}.tnth-section-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:24px}.tnth-section-head h2{font-size:32px;margin:4px 0 0}.tnth-grid{display:grid;gap:18px}.tnth-grid-5{grid-template-columns:repeat(5,1fr)}.tnth-grid-4{grid-template-columns:repeat(4,1fr)}.tnth-grid-3{grid-template-columns:repeat(3,1fr)}.tnth-grade-card,.tnth-subject-card,.tnth-quiz-card,.tnth-card{background:#fff;border:1px solid var(--tnth-border);border-radius:var(--tnth-radius);padding:22px;box-shadow:0 4px 15px rgba(31,41,55,.035);transition:.2s}.tnth-grade-card:hover,.tnth-subject-card:hover,.tnth-quiz-card:hover{transform:translateY(-3px);box-shadow:var(--tnth-shadow);border-color:#c7d2fe}.tnth-grade-card{text-align:center}.tnth-grade-card>span{display:grid;place-items:center;width:54px;height:54px;margin:0 auto 12px;border-radius:18px;background:linear-gradient(135deg,#4f46e5,#7c3aed);color:white;font-weight:900;font-size:22px}.tnth-grade-card strong{display:block}.tnth-subject-card{display:flex;flex-direction:column;gap:6px}.tnth-subject-icon{width:48px;height:48px;border-radius:16px;background:var(--tnth-soft);display:grid;place-items:center;color:var(--tnth-primary);font-size:22px}.tnth-subject-card small,.tnth-quiz-card p{color:var(--tnth-muted)}.tnth-card-meta{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}.tnth-card-meta span{background:var(--tnth-soft);color:var(--tnth-primary);border-radius:999px;padding:5px 9px;font-size:11px;font-weight:800}.tnth-quiz-card h3{font-size:19px;line-height:1.35;margin:8px 0}.tnth-page-head,.tnth-quiz-intro{background:#fff;border-bottom:1px solid var(--tnth-border);padding:50px 0}.tnth-page-head h1{font-size:42px}.tnth-quiz-intro-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:34px}.tnth-breadcrumb{font-size:13px;color:var(--tnth-muted);display:flex;gap:7px;flex-wrap:wrap;margin-bottom:18px}.tnth-quiz-info{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0}.tnth-quiz-info span{background:var(--tnth-bg);border:1px solid var(--tnth-border);border-radius:14px;padding:10px 13px;color:var(--tnth-muted)}.tnth-quiz-info strong{color:var(--tnth-text)}.tnth-quiz-note{background:var(--tnth-bg);border:1px solid var(--tnth-border);border-radius:20px;padding:20px}.tnth-quiz-focus{padding-top:40px}.tnth-quiz-app{max-width:820px;margin:auto;scroll-margin-top:100px}.tnth-runner,.tnth-result{background:#fff;border:1px solid var(--tnth-border);border-radius:28px;padding:28px;box-shadow:var(--tnth-shadow)}.tnth-runner-top{display:flex;justify-content:space-between;gap:20px;align-items:center}.tnth-progress{height:8px;background:#edf0f4;border-radius:999px;overflow:hidden;width:min(420px,60vw);margin-top:8px}.tnth-progress span{display:block;height:100%;background:var(--tnth-primary)}.tnth-time{font-weight:900;color:var(--tnth-primary)}.tnth-runner h2{font-size:26px;margin:30px 0 20px}.tnth-options{display:grid;gap:12px}.tnth-option{display:flex;align-items:center;gap:13px;width:100%;border:2px solid var(--tnth-border);background:#fff;border-radius:16px;padding:14px;text-align:left;cursor:pointer;color:var(--tnth-text);font-size:15px}.tnth-option>span{display:grid;place-items:center;width:38px;height:38px;border:2px solid var(--tnth-border);border-radius:12px;font-weight:900}.tnth-option:hover,.tnth-option.is-selected{border-color:#818cf8;background:#f5f7ff}.tnth-option.is-selected>span{background:var(--tnth-primary);border-color:var(--tnth-primary);color:#fff}.tnth-option.is-correct{border-color:#86efac;background:#f0fdf4}.tnth-option.is-wrong{border-color:#fca5a5;background:#fef2f2}.tnth-explain{margin-top:18px;background:#f8fafc;border-radius:14px;padding:14px}.tnth-runner-actions{display:flex;justify-content:space-between;gap:10px;margin-top:24px}.tnth-result{text-align:center}.tnth-result-icon{width:60px;height:60px;border-radius:20px;background:#fef3c7;display:grid;place-items:center;margin:auto;font-size:28px}.tnth-score{font-size:66px;font-weight:950;color:var(--tnth-primary)}.tnth-score small{font-size:22px;color:var(--tnth-muted)}.tnth-result-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:20px 0}.tnth-result-grid div{border:1px solid var(--tnth-border);border-radius:14px;padding:12px}.tnth-result-grid strong,.tnth-result-grid span{display:block}.tnth-result-grid span{font-size:12px;color:var(--tnth-muted)}.tnth-review{text-align:left;margin-top:28px}.tnth-review-card{border-top:1px solid var(--tnth-border);padding:18px 0}.tnth-review-answer{padding:7px 10px;border-radius:9px;margin-top:6px}.tnth-review-answer.ok{background:#f0fdf4;color:#166534}.tnth-review-answer.bad{background:#fef2f2;color:#991b1b}.tnth-footer{margin-top:40px;background:#111827;color:#e5e7eb;padding:48px 0 24px}.tnth-footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}.tnth-footer-menu{list-style:none;margin:0;padding:0}.tnth-copy{border-top:1px solid #263244;margin-top:28px;padding-top:20px;font-size:13px;color:#9ca3af}.tnth-content-narrow{max-width:780px}.tnth-empty{text-align:center;padding:60px 0}.tnth-pagination{margin-top:30px}.nav-links{display:flex;gap:8px;justify-content:center}.page-numbers{background:#fff;border:1px solid var(--tnth-border);border-radius:10px;padding:8px 12px}.page-numbers.current{background:var(--tnth-primary);color:#fff}@media(max-width:900px){.tnth-grid-5{grid-template-columns:repeat(3,1fr)}.tnth-grid-4,.tnth-grid-3{grid-template-columns:repeat(2,1fr)}.tnth-hero-inner,.tnth-quiz-intro-grid{grid-template-columns:1fr}.tnth-menu-toggle{display:block}.tnth-nav{display:none;position:absolute;left:16px;right:16px;top:72px;background:#fff;border:1px solid var(--tnth-border);border-radius:16px;padding:12px;box-shadow:var(--tnth-shadow)}.tnth-nav.is-open{display:block}.tnth-menu{flex-direction:column;align-items:stretch;gap:4px}.tnth-menu a{display:block;padding:10px 12px;border-radius:10px}.tnth-menu a:hover{background:var(--tnth-soft)}}@media(max-width:620px){.tnth-container{width:min(100% - 24px,1160px)}.tnth-hero-inner{padding:48px 0}.tnth-hero h1{font-size:36px}.tnth-section{padding:44px 0}.tnth-section-head h2{font-size:26px}.tnth-grid-5,.tnth-grid-4,.tnth-grid-3{grid-template-columns:1fr}.tnth-grade-card{display:flex;align-items:center;text-align:left;gap:12px}.tnth-grade-card>span{margin:0}.tnth-result-grid{grid-template-columns:repeat(2,1fr)}.tnth-runner,.tnth-result{padding:18px;border-radius:20px}.tnth-runner h2{font-size:22px}.tnth-runner-actions{position:sticky;bottom:8px;background:#fff;padding-top:10px}.tnth-btn{padding:12px 15px}.tnth-footer-grid{grid-template-columns:1fr}}