:root {
  --primary: #4f46e5;
  --primary-2: #7c3aed;
  --accent: #ec4899;
  --ink: #0f172a;
  --ink-2: #334155;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #f8fafc;
  --card: #ffffff;
  --ok: #16a34a;
  --bad: #dc2626;
  --mid: #f59e0b;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06);
  --shadow-lg: 0 20px 50px rgba(79, 70, 229, .18);
  --font: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.6; font-size: 16px; }
img { max-width: 100%; height: auto; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(1.75rem, 3.6vw, 2.6rem); font-weight: 800; }
h2 { font-size: clamp(1.25rem, 2.4vw, 1.6rem); font-weight: 750; }
p { margin: 0 0 1em; }
:focus-visible { outline: 3px solid #a5b4fc; outline-offset: 2px; border-radius: 6px; }

.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 860px; }
.center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.skip { position: absolute; left: -999px; top: 8px; background: #fff; padding: 8px 14px; z-index: 100; border-radius: 8px; }
.skip:focus { left: 8px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, .86); backdrop-filter: saturate(1.6) blur(14px); border-bottom: 1px solid var(--line); }
.nav-wrap { display: flex; align-items: center; gap: 20px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none !important; }
.brand-mark { width: 38px; height: 38px; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-text b { font-size: 1.15rem; font-weight: 800; letter-spacing: -.02em; }
.brand-text small { font-size: .72rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.main-nav { display: flex; align-items: center; gap: 18px; margin-left: auto; }
.main-nav ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.main-nav ul a { display: block; padding: 8px 12px; border-radius: 10px; color: var(--ink-2); font-weight: 600; font-size: .95rem; }
.main-nav ul a:hover { background: #eef2ff; color: var(--primary); text-decoration: none; }
.nav-user { display: flex; align-items: center; gap: 8px; }
.user-chip { display: flex; align-items: center; gap: 8px; padding: 4px 12px 4px 4px; border-radius: 999px; background: #eef2ff; color: var(--ink); text-decoration: none !important; }
.user-chip span { display: flex; flex-direction: column; line-height: 1.1; font-size: .85rem; }
.user-chip small { color: var(--primary); font-weight: 700; font-size: .72rem; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 0; padding: 10px; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; transition: .2s; }

.avatar { border-radius: 50%; display: inline-block; flex: none; background: #fff; }
.avatar-empty { display: inline-flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #c7d2fe, #fbcfe8); color: #3730a3; font-weight: 800; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 20px; border-radius: 12px; font: 700 .95rem var(--font); border: 1.5px solid transparent; cursor: pointer; text-decoration: none !important; transition: transform .15s, box-shadow .15s, background .15s; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; box-shadow: 0 6px 18px rgba(79, 70, 229, .3); }
.btn-primary:hover { box-shadow: 0 10px 26px rgba(79, 70, 229, .4); transform: translateY(-1px); }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: #c7d2fe; background: #f5f7ff; }
.btn-sm { padding: 7px 14px; font-size: .85rem; border-radius: 10px; }
.btn-lg { padding: 15px 28px; font-size: 1.05rem; border-radius: 14px; }
.btn-block { width: 100%; }

/* Breadcrumbs */
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; padding: 14px 20px 0; margin: 0; font-size: .85rem; color: var(--muted); }
.breadcrumbs li + li::before { content: '›'; margin-right: 6px; color: #cbd5e1; }
.breadcrumbs a { color: var(--muted); }

/* Alerts */
.flash-wrap { padding-top: 16px; }
.alert { padding: 12px 16px; border-radius: 12px; margin-bottom: 12px; font-weight: 500; border: 1px solid; }
.alert-success { background: #f0fdf4; border-color: #bbf7d0; color: #166534; }
.alert-error { background: #fef2f2; border-color: #fecaca; color: #991b1b; }
.alert-info { background: #eff6ff; border-color: #bfdbfe; color: #1e40af; }

/* Sections */
.section { padding: 56px 0; }
.section.pt-0 { padding-top: 0; }
.section-alt { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-title { text-align: center; margin-bottom: 32px; }
.section-title.left { text-align: left; margin-bottom: 20px; }
.eyebrow { display: inline-block; font-size: .8rem; font-weight: 700; color: var(--primary); background: #eef2ff; padding: 6px 12px; border-radius: 999px; margin-bottom: 16px; }
.lead { font-size: 1.1rem; color: var(--ink-2); max-width: 680px; }
.grad-text { background: linear-gradient(120deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* Hero */
.hero { padding: 56px 0 72px; background: radial-gradient(1200px 500px at 85% -10%, #e0e7ff 0, transparent 60%), radial-gradient(800px 400px at -10% 20%, #fce7f3 0, transparent 60%); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0; }
.hero-stats { display: flex; gap: 32px; list-style: none; padding: 0; margin: 0; }
.hero-stats b { display: block; font-size: 1.7rem; font-weight: 800; }
.hero-stats span { color: var(--muted); font-size: .9rem; }
.hero-art { position: relative; height: 420px; }
.float-card { position: absolute; background: #fff; border-radius: 18px; box-shadow: var(--shadow-lg); padding: 18px; width: 270px; border: 1px solid #eef2ff; animation: floaty 6s ease-in-out infinite; }
.float-card p { font-weight: 600; margin: 10px 0; font-size: .95rem; }
.fc-1 { top: 0; left: 10%; }
.fc-2 { top: 140px; right: 0; animation-delay: -2s; }
.fc-3 { bottom: 0; left: 0; animation-delay: -4s; }
@keyframes floaty { 50% { transform: translateY(-10px); } }
.pill { display: inline-block; font-size: .72rem; font-weight: 700; padding: 4px 10px; border-radius: 999px; }
.pill-tf { background: #dcfce7; color: #166534; }
.pill-mc { background: #e0e7ff; color: #3730a3; }
.pill-open { background: #fce7f3; color: #9d174d; }
.tf-mini, .mc-mini { display: flex; gap: 8px; }
.tf-mini i, .mc-mini i { font-style: normal; padding: 6px 12px; border-radius: 10px; border: 1.5px solid var(--line); font-size: .85rem; font-weight: 600; }
.tf-mini .ok, .mc-mini .ok { border-color: var(--ok); background: #f0fdf4; color: var(--ok); }
.bars { display: flex; align-items: flex-end; gap: 8px; height: 70px; }
.bars i { flex: 1; background: linear-gradient(180deg, #a5b4fc, #6366f1); border-radius: 6px 6px 2px 2px; }

/* Grade cards */
.grade-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grade-card { position: relative; display: flex; flex-direction: column; padding: 26px; border-radius: 22px; color: #fff; background: linear-gradient(140deg, var(--c1), var(--c2)); box-shadow: 0 14px 34px color-mix(in srgb, var(--c1) 35%, transparent); overflow: hidden; text-decoration: none !important; min-height: 220px; transition: transform .2s; }
.grade-card:hover { transform: translateY(-4px); }
.grade-card::after { content: ''; position: absolute; right: -40px; top: -40px; width: 160px; height: 160px; border-radius: 50%; background: rgba(255, 255, 255, .15); }
.grade-num { font-size: 4rem; font-weight: 800; line-height: 1; }
.grade-name { font-size: 1.2rem; font-weight: 700; }
.grade-subs { display: flex; gap: 6px; margin: 14px 0; font-size: 1.2rem; }
.grade-subs i { font-style: normal; background: rgba(255, 255, 255, .22); border-radius: 10px; padding: 3px 6px; }
.grade-go { margin-top: auto; font-weight: 700; }

/* Steps & skills */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; list-style: none; padding: 0; margin: 0 0 40px; counter-reset: s; }
.steps li { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; position: relative; }
.steps b { display: inline-flex; width: 36px; height: 36px; border-radius: 10px; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; margin-bottom: 12px; }
.steps h3 { font-size: 1.05rem; }
.steps p { color: var(--muted); margin: 0; font-size: .92rem; }
.skills { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.skill { padding: 22px; border-radius: var(--radius); background: linear-gradient(180deg, #fff, #f8fafc); border: 1px solid var(--line); }
.skill span { font-size: 1.8rem; }
.skill h3 { font-size: 1.05rem; margin-top: 8px; }
.skill p { color: var(--muted); margin: 0; font-size: .92rem; }

/* Compare */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 920px; }
.compare-card { position: relative; background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 30px; }
.compare-pro { border: 2px solid #c7d2fe; box-shadow: var(--shadow-lg); }
.ribbon { position: absolute; top: 18px; right: 18px; background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; font-size: .75rem; font-weight: 700; padding: 5px 12px; border-radius: 999px; }
.checks { list-style: none; padding: 0; margin: 0 0 20px; }
.checks li { padding: 8px 0 8px 30px; position: relative; }
.checks li::before { content: '✓'; position: absolute; left: 0; top: 7px; width: 20px; height: 20px; border-radius: 50%; background: #dcfce7; color: var(--ok); font-size: .75rem; font-weight: 800; display: flex; align-items: center; justify-content: center; }

/* FAQ */
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px 20px; margin-bottom: 10px; }
.faq summary { font-weight: 700; cursor: pointer; }
.faq p { margin: 10px 0 0; color: var(--ink-2); }

/* Page head */
.page-head { padding: 34px 0 30px; }
.page-head .lead { margin-bottom: 0; }
.course-icon { display: inline-flex; width: 52px; height: 52px; border-radius: 14px; align-items: center; justify-content: center; font-size: 1.6rem; background: color-mix(in srgb, var(--sc, #4f46e5) 14%, #fff); }
.course-icon.big { width: 64px; height: 64px; font-size: 2rem; margin-bottom: 14px; }

/* Course cards */
.course-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.course-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 24px; color: var(--ink); text-decoration: none !important; border-top: 5px solid var(--sc); box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s; }
.course-card:hover { transform: translateY(-3px); box-shadow: 0 16px 36px rgba(15, 23, 42, .1); }
.course-card h2 { font-size: 1.2rem; margin: 14px 0 6px; }
.course-card p { color: var(--muted); font-size: .9rem; }
.course-go { margin-top: auto; font-weight: 700; color: var(--sc); }

/* Exams */
.exam-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.term-title { font-size: 1rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 12px; }
.exam-card { display: block; background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 20px 22px; margin-bottom: 14px; color: var(--ink); text-decoration: none !important; box-shadow: var(--shadow); transition: border-color .2s, transform .2s; }
.exam-card:hover { border-color: #a5b4fc; transform: translateY(-2px); }
.exam-card-top { display: flex; justify-content: space-between; align-items: center; }
.exam-no { font-size: .78rem; font-weight: 700; color: var(--primary); background: #eef2ff; padding: 4px 10px; border-radius: 999px; }
.exam-card h4 { font-size: 1.1rem; margin: 12px 0 6px; }
.exam-units { color: var(--muted); font-size: .88rem; margin-bottom: 12px; }
.exam-meta { display: flex; gap: 14px; font-size: .85rem; color: var(--ink-2); font-weight: 600; }
.exam-meta .go, .unit-row .go { margin-left: auto; color: var(--primary); }
.score-badge { font-size: .78rem; font-weight: 700; padding: 4px 10px; border-radius: 999px; }
.score-badge.good { background: #dcfce7; color: #166534; }
.score-badge.mid { background: #fef3c7; color: #92400e; }
.score-badge.low { background: #fee2e2; color: #991b1b; }
.unit-list { display: grid; gap: 10px; }
.unit-row { display: flex; align-items: center; gap: 16px; padding: 14px 18px; background: var(--bg); border: 1px solid var(--line); border-radius: 14px; color: var(--ink); text-decoration: none !important; }
.unit-row:hover { border-color: #a5b4fc; background: #fff; }
.unit-no { width: 36px; height: 36px; border-radius: 10px; background: #fff; border: 1px solid var(--line); display: flex; align-items: center; justify-content: center; font-weight: 800; color: var(--primary); flex: none; }
.unit-name { display: flex; flex-direction: column; }
.unit-name small { color: var(--muted); }

/* Auth */
.auth-wrap { display: flex; justify-content: center; }
.auth-card { width: 100%; max-width: 440px; background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 32px; box-shadow: var(--shadow); }
.auth-card.wide { max-width: 760px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 18px; }
.field { display: block; margin-bottom: 16px; }
.field.full { grid-column: 1 / -1; }
.field > span { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 6px; }
.field input, .field select, .lb-filter select { width: 100%; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 12px; font: inherit; background: #fff; transition: border-color .15s, box-shadow .15s; }
.field input:focus, .field select:focus { border-color: #818cf8; box-shadow: 0 0 0 4px #e0e7ff; outline: none; }
.field input[aria-invalid="true"] { border-color: var(--bad); }
.field-err { color: var(--bad); font-size: .84rem; margin: 6px 0 0; }
.auth-alt { text-align: center; margin: 18px 0 0; font-size: .92rem; }
.check { display: flex; gap: 10px; align-items: flex-start; margin: 10px 0 18px; font-size: .9rem; }
.check input { margin-top: 4px; width: 18px; height: 18px; }
.avatar-pick { border: 1px solid var(--line); border-radius: 16px; padding: 16px; margin: 4px 0 16px; display: flex; flex-wrap: wrap; gap: 10px; }
.avatar-pick legend { font-weight: 700; padding: 0 6px; }
.av-opt { position: relative; cursor: pointer; }
.av-opt input { position: absolute; opacity: 0; }
.av-opt img, .av-none span { display: flex; width: 60px; height: 60px; border-radius: 50%; border: 3px solid transparent; transition: .15s; background: #f1f5f9; }
.av-none span { align-items: center; justify-content: center; font-size: .7rem; font-weight: 700; color: var(--muted); text-align: center; line-height: 1.1; }
.av-opt input:checked + img, .av-opt input:checked + span { border-color: var(--primary); box-shadow: 0 0 0 4px #e0e7ff; transform: scale(1.06); }
.av-opt input:focus-visible + img, .av-opt input:focus-visible + span { outline: 3px solid #a5b4fc; }
.pw-change { margin: 6px 0 18px; }
.pw-change summary { cursor: pointer; font-weight: 600; margin-bottom: 12px; }

/* Result */
.result-hero { text-align: center; background: #fff; border: 1px solid var(--line); border-radius: 26px; padding: 36px 24px; box-shadow: var(--shadow); }
.result-counts { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin: 26px 0; }
.rc { min-width: 120px; padding: 16px; border-radius: 18px; background: var(--bg); border: 1px solid var(--line); }
.rc b { display: block; font-size: 2.1rem; font-weight: 800; line-height: 1.1; }
.rc span { color: var(--muted); font-size: .85rem; font-weight: 600; }
.rc-ok { background: #f0fdf4; border-color: #bbf7d0; } .rc-ok b { color: var(--ok); }
.rc-bad { background: #fef2f2; border-color: #fecaca; } .rc-bad b { color: var(--bad); }
.rc-score { background: #eef2ff; border-color: #c7d2fe; } .rc-score b { color: var(--primary); }
.result-actions { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
.upsell { margin-top: 26px; text-align: center; padding: 30px; border-radius: 22px; background: linear-gradient(135deg, #eef2ff, #fdf2f8); border: 1px solid #e0e7ff; }
.reward { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin: 20px 0; }
.reward-xp { font-weight: 800; color: #fff; background: linear-gradient(135deg, #f59e0b, #ef4444); padding: 8px 16px; border-radius: 999px; animation: pop .5s ease; }
.badge-pop { padding: 8px 16px; border-radius: 999px; background: #fff; border: 2px solid var(--bc); animation: pop .5s ease .2s both; }
.badge-pop i { font-style: normal; }
@keyframes pop { from { transform: scale(.6); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.analysis-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin: 26px 0 34px; }
.panel { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 22px; }
.panel h2 { font-size: 1.05rem; margin-bottom: 14px; }
.kv { list-style: none; padding: 0; margin: 0 0 12px; }
.kv li { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px dashed var(--line); }
.kv li:last-child { border: 0; }
.meter { margin-bottom: 12px; }
.meter-label { display: flex; justify-content: space-between; gap: 10px; font-size: .88rem; margin-bottom: 5px; }
.meter-label span { color: var(--ink-2); }
.meter-bar { height: 9px; background: #f1f5f9; border-radius: 999px; overflow: hidden; }
.meter-bar span { display: block; height: 100%; border-radius: 999px; background: var(--primary); transition: width .6s; }
.meter-bar .good { background: linear-gradient(90deg, #22c55e, #16a34a); }
.meter-bar .mid { background: linear-gradient(90deg, #fbbf24, #f59e0b); }
.meter-bar .low { background: linear-gradient(90deg, #f87171, #dc2626); }
.review-list { display: grid; gap: 10px; }
.review-item { background: #fff; border: 1px solid var(--line); border-left: 5px solid var(--line); border-radius: 14px; }
.review-item.r-ok { border-left-color: var(--ok); }
.review-item.r-bad { border-left-color: var(--bad); }
.review-item.r-blank { border-left-color: var(--mid); }
.review-item > summary { display: flex; align-items: center; gap: 10px; padding: 14px 16px; cursor: pointer; list-style: none; }
.review-item > summary::-webkit-details-marker { display: none; }
.r-icon { width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; color: #fff; flex: none; font-size: .85rem; }
.r-ok .r-icon { background: var(--ok); } .r-bad .r-icon { background: var(--bad); } .r-blank .r-icon { background: var(--mid); }
.r-num { font-weight: 800; }
.r-text { flex: 1; color: var(--ink-2); font-size: .93rem; }
.r-tag { font-size: .72rem; font-weight: 700; color: var(--muted); background: var(--bg); padding: 3px 8px; border-radius: 8px; white-space: nowrap; }
.r-body { padding: 0 18px 18px 52px; }
.r-q { font-weight: 600; margin-bottom: 10px; }
.r-img { max-height: 260px; border-radius: 10px; margin-bottom: 10px; }
.lbl { font-weight: 700; color: var(--muted); }
.r-exp { background: #f8fafc; border-radius: 10px; padding: 12px 14px; font-size: .93rem; }
.r-passage { background: #fffbeb; border: 1px solid #fde68a; border-radius: 10px; padding: 10px 14px; margin-bottom: 12px; font-size: .92rem; }
.r-passage summary { cursor: pointer; font-weight: 700; }

/* Dashboard */
.dash-head { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-bottom: 24px; }
.dash-head h1 { margin: 0; font-size: 1.8rem; }
.dash-head p { margin: 0; }
.level-box { margin-left: auto; min-width: 260px; background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 14px 18px; }
.level-top { display: flex; justify-content: space-between; margin-bottom: 8px; }
.level-box small { color: var(--muted); }
.stat-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; margin-bottom: 20px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 16px; }
.stat b { display: block; font-size: 1.6rem; font-weight: 800; }
.stat span { color: var(--muted); font-size: .82rem; font-weight: 600; }
.stat-ok b { color: var(--ok); } .stat-bad b { color: var(--bad); } .stat-fire b { color: #ea580c; }
.dash-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.span-2 { grid-column: span 2; } .span-3 { grid-column: 1 / -1; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.h-weak { color: var(--bad); font-size: .95rem; } .h-strong { color: var(--ok); font-size: .95rem; }
.big-num { font-size: 2.6rem; font-weight: 800; margin: 0; color: var(--primary); }
.spark { display: flex; align-items: flex-end; gap: 4px; height: 90px; }
.spark span { flex: 1; background: #e2e8f0; border-radius: 4px 4px 1px 1px; }
.spark span.on { background: linear-gradient(180deg, #818cf8, #4f46e5); }
.badge-mini { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.medal { display: inline-flex; width: 46px; height: 46px; border-radius: 50%; align-items: center; justify-content: center; font-size: 1.4rem; background: radial-gradient(circle at 30% 30%, #fff, color-mix(in srgb, var(--bc) 30%, #fff)); border: 3px solid var(--bc); }
.medal.big { width: 76px; height: 76px; font-size: 2.2rem; }
.table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.table th, .table td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); }
.table th { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; }
.table .ok { color: var(--ok); font-weight: 700; } .table .bad { color: var(--bad); font-weight: 700; }
.badge-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 20px; }
.badge-card { text-align: center; background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 24px 16px; }
.badge-card h2 { font-size: 1.05rem; margin: 12px 0 6px; }
.badge-card p { color: var(--muted); font-size: .88rem; }
.badge-card.locked { opacity: .55; filter: grayscale(1); }
.badge-card.earned { box-shadow: 0 10px 26px color-mix(in srgb, var(--bc) 25%, transparent); }
.page-row { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.wb-list { list-style: none; padding: 0; display: grid; gap: 10px; }
.wb-list li { display: flex; gap: 14px; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; }
.wb-list p { margin: 0 0 4px; }
.wb-list small { color: var(--muted); }
.wb-count { flex: none; width: 40px; height: 40px; border-radius: 10px; background: #fee2e2; color: var(--bad); font-weight: 800; display: flex; align-items: center; justify-content: center; }
.empty { text-align: center; padding: 40px 20px; background: #fff; border: 2px dashed var(--line); border-radius: 18px; color: var(--muted); }

/* Leaderboard */
.tabs { display: flex; flex-wrap: wrap; gap: 6px; margin: 18px 0; align-items: center; }
.tabs a { padding: 8px 14px; border-radius: 10px; background: #fff; border: 1px solid var(--line); color: var(--ink-2); font-weight: 600; font-size: .9rem; text-decoration: none; }
.tabs a.on { background: var(--primary); border-color: var(--primary); color: #fff; }
.tabs-sep { flex: 1; }
.lb-filter { margin-bottom: 16px; max-width: 260px; }
.lb { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.lb li { display: flex; align-items: center; gap: 14px; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 10px 16px; }
.lb li.top-1 { background: linear-gradient(90deg, #fef9c3, #fff); border-color: #fde047; }
.lb li.top-2 { background: linear-gradient(90deg, #f1f5f9, #fff); }
.lb li.top-3 { background: linear-gradient(90deg, #ffedd5, #fff); }
.lb li.me { outline: 2px solid var(--primary); }
.lb-rank { width: 34px; text-align: center; font-weight: 800; font-size: 1.1rem; }
.lb-name { display: flex; flex-direction: column; flex: 1; line-height: 1.2; }
.lb-name small { color: var(--muted); }
.lb-xp { font-weight: 800; color: var(--primary); }

.prose h2 { margin-top: 1.6em; }
.prose ul { padding-left: 1.2em; }
.big-404 { font-size: 7rem; font-weight: 800; margin: 0; background: linear-gradient(120deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; line-height: 1; }

/* Footer */
.site-footer { background: #0f172a; color: #cbd5e1; padding: 52px 0 24px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(4, 1fr); gap: 28px; }
.footer-grid p { font-size: .9rem; color: #94a3b8; margin-top: 12px; }
.brand-footer .brand-text b { color: #fff; }
.footer-title { font-size: .85rem; color: #fff; text-transform: uppercase; letter-spacing: .08em; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 6px; }
.site-footer a { color: #cbd5e1; font-size: .88rem; }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; border-top: 1px solid #1e293b; margin-top: 34px; padding-top: 20px; font-size: .85rem; color: #94a3b8; }

@media (max-width: 1024px) {
  .grade-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-row { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .badge-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .main-nav { position: fixed; inset: 68px 0 auto 0; background: #fff; flex-direction: column; align-items: stretch; padding: 16px 20px 24px; border-bottom: 1px solid var(--line); box-shadow: 0 20px 40px rgba(0, 0, 0, .08); display: none; }
  .main-nav.open { display: flex; }
  .main-nav ul { flex-direction: column; }
  .nav-user { flex-wrap: wrap; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { display: none; }
  .steps, .skills { grid-template-columns: 1fr 1fr; }
  .compare, .exam-grid, .analysis-grid, .two-col { grid-template-columns: 1fr; }
  .course-grid { grid-template-columns: 1fr 1fr; }
  .dash-grid { grid-template-columns: 1fr; }
  .span-2, .span-3 { grid-column: auto; }
  .level-box { margin-left: 0; width: 100%; }
}
@media (max-width: 560px) {
  .container { padding: 0 16px; }
  .grade-grid, .course-grid, .steps, .skills, .form-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .badge-grid { grid-template-columns: 1fr 1fr; }
  .auth-card { padding: 22px; }
  .r-body { padding-left: 18px; }
  .table { font-size: .8rem; }
  .table th:nth-child(5), .table td:nth-child(5), .table th:nth-child(6), .table td:nth-child(6) { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}