/* PTE Pro Lab front-end styles (v2)
   One stylesheet for every public page. Colors, type and spacing live in the
   tokens below, so change them here rather than in components. */

:root {
  /* Brand */
  --brand-900: #0b3d3a;
  --brand-800: #115e59;
  --brand-700: #0f766e;
  --brand-600: #0d9488;
  --brand-500: #14b8a6;
  --brand-300: #5eead4;
  --brand-100: #ccfbf1;
  --brand-50: #effdfa;
  --cyan: #22d3ee;
  --cyan-700: #0e7490;
  --accent: #fbbf24;
  --accent-600: #f59e0b;
  --on-accent: #1c1917;

  /* Night surfaces (hero, header, footer) */
  --night: #031a1c;
  --night-2: #06272b;
  --night-3: #0a3438;
  --night-line: rgba(255, 255, 255, 0.1);
  --night-text: #e7f6f3;
  --night-muted: #a7cdc7;

  /* Skills (always paired with a text label) */
  --speaking: #0f766e;
  --speaking-bg: #ccfbf1;
  --writing: #6d28d9;
  --writing-bg: #ede9fe;
  --reading: #1d4ed8;
  --reading-bg: #dbeafe;
  --listening: #be185d;
  --listening-bg: #fce7f3;

  /* Neutrals */
  --ink: #0b1b2b;
  --ink-2: #334155;
  --muted: #5b6b80;
  --line: #e4ebf2;
  --line-strong: #cbd5e1;
  --bg: #ffffff;
  --bg-soft: #f6f9fb;
  --surface: #ffffff;

  /* Status */
  --success: #15803d;
  --success-bg: #dcfce7;
  --warning: #92400e;
  --warning-bg: #fef3c7;
  --danger: #b91c1c;
  --danger-bg: #fee2e2;
  --info-bg: #eff6ff;

  /* Type */
  --font: Inter, "Inter Variable", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-display: "Inter Tight", "Inter Display", Inter, ui-sans-serif, system-ui, sans-serif;
  --fs-xs: 0.8125rem;
  --fs-sm: 0.9375rem;
  --fs-base: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.3125rem;
  --fs-2xl: clamp(1.5rem, 1.2rem + 1vw, 1.875rem);
  --fs-3xl: clamp(2rem, 1.4rem + 2vw, 2.75rem);
  --fs-4xl: clamp(2.5rem, 1.5rem + 3.6vw, 4.25rem);

  /* Shape and depth */
  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(11, 27, 43, 0.05);
  --shadow: 0 1px 2px rgba(11, 27, 43, 0.04), 0 10px 30px -12px rgba(11, 27, 43, 0.14);
  --shadow-lg: 0 2px 6px rgba(11, 27, 43, 0.05), 0 30px 60px -20px rgba(11, 27, 43, 0.25);
  --glow: 0 0 0 1px rgba(13, 148, 136, 0.25), 0 18px 40px -16px rgba(13, 148, 136, 0.45);

  /* Gradients */
  --grad-brand: linear-gradient(135deg, #14b8a6 0%, #0d9488 45%, #0e7490 100%);
  --grad-text: linear-gradient(90deg, #5eead4 0%, #67e8f9 55%, #fde68a 100%);
  --grad-text-light: linear-gradient(90deg, #0d9488 0%, #0e7490 100%);
  --grad-accent: linear-gradient(180deg, #fcd34d 0%, #f59e0b 100%);

  /* Layout */
  --container: 1200px;
  --gutter: 16px;
  --header-h: 68px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --dur: 220ms;
}
@media (min-width: 768px) { :root { --gutter: 24px; } }

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0; font-family: var(--font); font-size: var(--fs-base); line-height: 1.6; color: var(--ink-2); background: var(--bg);
  text-rendering: optimizeLegibility; -webkit-font-smoothing: antialiased; font-feature-settings: "cv11", "ss01";
}
img, svg { display: block; max-width: 100%; }
h1, h2, h3, h4 { font-family: var(--font-display); color: var(--ink); line-height: 1.15; margin: 0 0 0.5em; letter-spacing: -0.02em; text-wrap: balance; }
h1 { font-size: var(--fs-4xl); font-weight: 800; letter-spacing: -0.04em; line-height: 1.04; }
h2 { font-size: var(--fs-3xl); font-weight: 800; letter-spacing: -0.035em; line-height: 1.1; }
h3 { font-size: var(--fs-xl); font-weight: 700; }
h4 { font-size: var(--fs-lg); font-weight: 700; }
p { margin: 0 0 1em; }
a { color: var(--brand-700); text-underline-offset: 3px; }
a:hover { color: var(--brand-800); }
ul, ol { margin: 0 0 1em; padding-left: 1.25em; }
li + li { margin-top: 0.35em; }
strong { color: var(--ink); }
::selection { background: var(--brand-100); color: var(--ink); }
:focus-visible { outline: 3px solid var(--brand-500); outline-offset: 2px; border-radius: 6px; }

.skip-link { position: absolute; left: 12px; top: -48px; z-index: 100; background: var(--ink); color: #fff; padding: 10px 16px; border-radius: var(--radius-sm); font-weight: 600; text-decoration: none; transition: top var(--dur) var(--ease); }
.skip-link:focus { top: 12px; color: #fff; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.container-narrow { max-width: 780px; }
.section { padding: 72px 0; position: relative; }
.section-sm { padding: 40px 0; }
.section-soft { background: var(--bg-soft); }
.section-tint { background: radial-gradient(1200px 400px at 10% 0%, rgba(20, 184, 166, 0.08), transparent 60%), radial-gradient(900px 400px at 100% 100%, rgba(34, 211, 238, 0.08), transparent 60%), var(--bg-soft); }
@media (min-width: 1024px) { .section { padding: 112px 0; } }

.icon { width: 20px; height: 20px; flex: none; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.icon-sm { width: 16px; height: 16px; }
.icon-lg { width: 24px; height: 24px; }

/* ---------- Text helpers ---------- */
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--brand-700); margin-bottom: 14px; }
.eyebrow::before { content: ""; width: 18px; height: 2px; border-radius: 2px; background: var(--grad-brand); }
.grad { background: var(--grad-text-light); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: var(--fs-lg); color: var(--ink-2); max-width: 62ch; }
.muted { color: var(--muted); }
.small { font-size: var(--fs-sm); }
.section-head { max-width: 720px; margin-bottom: 44px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .eyebrow { justify-content: center; }
.section-head p { color: var(--muted); font-size: var(--fs-lg); margin: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 20px; border-radius: var(--radius-sm);
  font: inherit; font-weight: 700; font-size: var(--fs-sm); line-height: 1.2; text-decoration: none; cursor: pointer; border: 1px solid transparent; white-space: nowrap;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), filter var(--dur) var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--grad-brand); color: #fff; box-shadow: inset 0 1px 0 rgba(255,255,255,0.25), 0 8px 20px -8px rgba(13, 148, 136, 0.7); }
.btn-primary:hover { color: #fff; filter: brightness(1.06); box-shadow: inset 0 1px 0 rgba(255,255,255,0.25), 0 12px 26px -8px rgba(13, 148, 136, 0.8); }
.btn-accent { background: var(--grad-accent); color: var(--on-accent); box-shadow: inset 0 1px 0 rgba(255,255,255,0.5), 0 10px 24px -10px rgba(245, 158, 11, 0.9); }
.btn-accent:hover { color: var(--on-accent); filter: brightness(1.04); box-shadow: inset 0 1px 0 rgba(255,255,255,0.5), 0 14px 30px -10px rgba(245, 158, 11, 1); }
.btn-outline { background: var(--surface); color: var(--ink); border-color: var(--line-strong); box-shadow: var(--shadow-sm); }
.btn-outline:hover { border-color: var(--brand-600); color: var(--brand-800); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--bg-soft); color: var(--ink); }
.btn-glass { background: rgba(255,255,255,0.08); color: #fff; border-color: rgba(255,255,255,0.22); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.btn-glass:hover { background: rgba(255,255,255,0.16); color: #fff; border-color: rgba(255,255,255,0.35); }
.btn-light { background: #fff; color: var(--brand-900); }
.btn-light:hover { background: var(--brand-50); color: var(--brand-900); }
.btn-lg { min-height: 54px; padding: 14px 26px; font-size: var(--fs-base); border-radius: 12px; }
.btn-sm { min-height: 36px; padding: 6px 14px; font-size: var(--fs-xs); }
.btn-block { width: 100%; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }
.link-arrow { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; text-decoration: none; min-height: 44px; }
.link-arrow .icon { transition: transform var(--dur) var(--ease); }
.link-arrow:hover .icon { transform: translateX(3px); }

/* ---------- Badges ---------- */
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: var(--radius-pill); font-size: var(--fs-xs); font-weight: 700; line-height: 1.5; background: var(--bg-soft); color: var(--ink-2); border: 1px solid var(--line); }
.badge-brand { background: var(--brand-50); color: var(--brand-800); border-color: var(--brand-100); }
.badge-core { background: var(--warning-bg); color: var(--warning); border-color: #fde68a; }
.badge-new { background: var(--grad-accent); color: var(--on-accent); border-color: transparent; }
.badge-easy, .badge-done { background: var(--success-bg); color: var(--success); border-color: #bbf7d0; }
.badge-medium { background: var(--warning-bg); color: var(--warning); border-color: #fde68a; }
.badge-hard { background: var(--danger-bg); color: var(--danger); border-color: #fecaca; }
.badge-pte { background: var(--brand-50); color: var(--brand-800); border-color: var(--brand-100); }
.badge-ielts { background: var(--reading-bg); color: var(--reading); border-color: #bfdbfe; }

.skill-speaking { --skill: var(--speaking); --skill-bg: var(--speaking-bg); --skill-grad: linear-gradient(135deg, #2dd4bf, #0f766e); }
.skill-writing { --skill: var(--writing); --skill-bg: var(--writing-bg); --skill-grad: linear-gradient(135deg, #a78bfa, #6d28d9); }
.skill-reading { --skill: var(--reading); --skill-bg: var(--reading-bg); --skill-grad: linear-gradient(135deg, #60a5fa, #1d4ed8); }
.skill-listening { --skill: var(--listening); --skill-bg: var(--listening-bg); --skill-grad: linear-gradient(135deg, #f472b6, #be185d); }
.skill-chip { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; flex: none; background: var(--skill-bg, var(--brand-50)); color: var(--skill, var(--brand-700)); }
.skill-chip .icon { width: 22px; height: 22px; }
.skill-chip.solid { background: var(--skill-grad, var(--grad-brand)); color: #fff; box-shadow: inset 0 1px 0 rgba(255,255,255,0.3), 0 8px 18px -8px var(--skill, var(--brand-700)); }

/* ---------- Announcement bar ---------- */
.announce { background: #021112; color: var(--night-muted); font-size: var(--fs-sm); border-bottom: 1px solid var(--night-line); }
.announce .container { display: flex; align-items: center; justify-content: center; gap: 10px; min-height: 40px; text-align: center; flex-wrap: wrap; padding-top: 6px; padding-bottom: 6px; }
.announce .tag { background: var(--grad-accent); color: var(--on-accent); font-weight: 800; font-size: var(--fs-xs); padding: 2px 10px; border-radius: var(--radius-pill); }
.announce a, .announce strong { color: #fff; font-weight: 700; }
.announce s { opacity: 0.7; }

/* ---------- Header (dark glass) ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(3, 26, 28, 0.82); backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px); border-bottom: 1px solid var(--night-line); }
.header-inner { display: flex; align-items: center; gap: 16px; height: var(--header-h); }
.logo { display: inline-flex; align-items: center; text-decoration: none; flex: none; min-height: 44px; }
.logo img { height: 36px; width: auto; }
.main-nav { display: none; margin-left: 16px; }
.main-nav > ul { display: flex; align-items: center; gap: 2px; list-style: none; margin: 0; padding: 0; }
.main-nav li + li { margin-top: 0; }
.nav-link, .nav-trigger {
  display: inline-flex; align-items: center; gap: 4px; min-height: 44px; padding: 8px 12px; border-radius: var(--radius-sm); color: #cfe7e3;
  font: inherit; font-size: var(--fs-sm); font-weight: 600; text-decoration: none; background: none; border: 0; cursor: pointer;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav-link:hover, .nav-trigger:hover { background: rgba(255,255,255,0.08); color: #fff; }
.nav-link[aria-current="page"] { color: #fff; background: rgba(94, 234, 212, 0.14); box-shadow: inset 0 0 0 1px rgba(94, 234, 212, 0.25); }
.nav-trigger .icon { transition: transform var(--dur) var(--ease); }
.nav-trigger[aria-expanded="true"] { color: #fff; background: rgba(255,255,255,0.08); }
.nav-trigger[aria-expanded="true"] .icon { transform: rotate(180deg); }
.has-menu { position: relative; }
.menu {
  position: absolute; top: calc(100% + 10px); left: 0; min-width: 320px; padding: 8px; list-style: none; margin: 0; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility 0s linear var(--dur);
}
.has-menu.is-open .menu { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
.menu li + li { margin-top: 0; }
.menu a { display: flex; gap: 12px; align-items: flex-start; padding: 10px 12px; border-radius: var(--radius-sm); text-decoration: none; color: var(--ink); }
.menu a:hover { background: var(--bg-soft); }
.menu .mi { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: var(--brand-50); color: var(--brand-700); flex: none; }
.menu .mi .icon { width: 18px; height: 18px; }
.menu strong { display: block; font-size: var(--fs-sm); }
.menu small { display: block; color: var(--muted); font-size: var(--fs-xs); line-height: 1.4; }
.header-actions { display: none; align-items: center; gap: 8px; margin-left: auto; }
.header-actions .btn-ghost { color: #e7f6f3; }
.header-actions .btn-ghost:hover { background: rgba(255,255,255,0.08); color: #fff; }
.nav-toggle { margin-left: auto; width: 44px; height: 44px; display: inline-grid; place-items: center; border-radius: var(--radius-sm); border: 1px solid var(--night-line); background: rgba(255,255,255,0.06); color: #fff; cursor: pointer; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }
.mobile-nav { display: none; border-top: 1px solid var(--night-line); background: var(--night); max-height: calc(100vh - var(--header-h)); overflow-y: auto; }
.mobile-nav.is-open { display: block; }
.mobile-nav .container { padding-top: 12px; padding-bottom: 24px; }
.mobile-nav ul { list-style: none; margin: 0; padding: 0; }
.mobile-nav li + li { margin-top: 0; }
.mobile-nav a { display: flex; align-items: center; min-height: 48px; padding: 0 4px; color: var(--night-text); font-weight: 600; text-decoration: none; border-bottom: 1px solid var(--night-line); }
.mobile-nav a[aria-current="page"] { color: var(--brand-300); }
.mobile-nav .group-label { display: block; margin: 20px 4px 4px; font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--night-muted); }
.mobile-nav .btn-row { margin-top: 20px; }
.mobile-nav .btn-row .btn { flex: 1; }
.mobile-nav .btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.25); box-shadow: none; }
@media (min-width: 1080px) { .main-nav, .header-actions { display: flex; } .nav-toggle, .mobile-nav, .mobile-nav.is-open { display: none; } }

/* ---------- Night sections (hero, page hero, CTA, footer) ---------- */
.night { position: relative; overflow: hidden; background: var(--night); color: var(--night-muted); isolation: isolate; }
.night h1, .night h2, .night h3 { color: #fff; }
.night .lead { color: #c3e2dd; }
.night .eyebrow { color: var(--brand-300); }
.night .grad { background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
.aurora { position: absolute; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.aurora span { position: absolute; border-radius: 50%; filter: blur(70px); opacity: 0.55; }
.aurora .a1 { width: 620px; height: 620px; left: -160px; top: -260px; background: radial-gradient(circle, #14b8a6, transparent 65%); animation: drift1 14s ease-in-out infinite alternate; }
.aurora .a2 { width: 560px; height: 560px; right: -140px; top: -120px; background: radial-gradient(circle, #0891b2, transparent 65%); animation: drift2 16s ease-in-out infinite alternate; }
.aurora .a3 { width: 420px; height: 420px; left: 40%; bottom: -260px; background: radial-gradient(circle, rgba(251, 191, 36, 0.55), transparent 65%); animation: drift1 18s ease-in-out infinite alternate-reverse; }
.aurora::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 56px 56px; mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 30%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 30%, transparent 75%);
}
@keyframes drift1 { to { transform: translate(60px, 40px) scale(1.08); } }
@keyframes drift2 { to { transform: translate(-50px, 50px) scale(1.1); } }

/* ---------- Home hero ---------- */
.hero { padding: 64px 0 0; }
.hero-grid { display: grid; gap: 56px; align-items: center; }
.hero h1 { margin-bottom: 22px; }
.hero .lead { margin-bottom: 30px; font-size: 1.1875rem; }
.pill { display: inline-flex; align-items: center; gap: 10px; padding: 5px 14px 5px 5px; border-radius: var(--radius-pill); background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.14); color: #d7f3ee; font-size: var(--fs-xs); font-weight: 600; margin-bottom: 22px; text-decoration: none; }
.pill b { background: var(--grad-accent); color: var(--on-accent); border-radius: var(--radius-pill); padding: 2px 10px; font-weight: 800; }
.pill:hover { color: #fff; border-color: rgba(255,255,255,0.3); }
.check-list { list-style: none; padding: 0; margin: 26px 0 0; display: flex; flex-wrap: wrap; gap: 10px 22px; }
.check-list li { display: flex; align-items: center; gap: 8px; margin: 0; font-size: var(--fs-sm); font-weight: 600; color: #cfe7e3; }
.check-list .icon { color: var(--brand-300); width: 18px; height: 18px; }
@media (min-width: 1024px) { .hero { padding: 96px 0 0; } .hero-grid { grid-template-columns: 1fr 1.02fr; gap: 56px; } }

/* App mockup (illustrative) */
.app { position: relative; }
.app-window {
  position: relative; border-radius: var(--radius-lg); background: linear-gradient(180deg, rgba(255,255,255,0.1), rgba(255,255,255,0.04));
  border: 1px solid rgba(255,255,255,0.16); box-shadow: 0 40px 80px -30px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.12); padding: 10px; backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.app-inner { background: #fff; border-radius: 14px; overflow: hidden; display: grid; grid-template-columns: 1fr; color: var(--ink-2); }
@media (min-width: 640px) { .app-inner { grid-template-columns: 168px 1fr; } }
.app-bar { display: flex; align-items: center; gap: 6px; padding: 4px 8px 12px; }
.app-bar i { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,0.25); }
.app-bar span { margin-left: 10px; font-size: var(--fs-xs); color: var(--night-muted); font-weight: 600; }
.app-side { display: none; background: var(--bg-soft); border-right: 1px solid var(--line); padding: 16px 12px; }
@media (min-width: 640px) { .app-side { display: block; } }
.app-side .lbl { font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin: 0 6px 10px; }
.app-skill { display: flex; align-items: center; gap: 8px; padding: 8px 6px; border-radius: 8px; font-size: var(--fs-xs); font-weight: 700; color: var(--ink); }
.app-skill.on { background: #fff; box-shadow: var(--shadow-sm); }
.app-skill i { width: 22px; height: 22px; border-radius: 7px; display: grid; place-items: center; background: var(--skill-grad); color: #fff; flex: none; }
.app-skill i .icon { width: 13px; height: 13px; }
.app-skill .bar { margin-top: 5px; height: 4px; border-radius: 4px; background: var(--line); overflow: hidden; }
.app-skill .bar b { display: block; height: 100%; background: var(--skill); border-radius: inherit; }
.app-main { padding: 20px 22px 24px; }
@media (min-width: 1024px) { .app-main { padding: 24px 26px 28px; } .app-text { font-size: var(--fs-base) !important; } .app-head strong { font-size: 1.1875rem !important; } .app-skill { font-size: 13px !important; } }
.app-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 12px; }
.app-head strong { font-family: var(--font-display); font-size: 1.0625rem; }
.app-text { font-size: var(--fs-sm); line-height: 1.85; margin: 0 0 16px; }
.w-ok { border-bottom: 2px solid #34d399; }
.w-miss { color: var(--danger); text-decoration: line-through; text-decoration-thickness: 2px; background: var(--danger-bg); border-radius: 4px; padding: 0 2px; }
.w-cur { background: var(--brand-100); color: var(--brand-900); border-radius: 4px; padding: 0 3px; }
.app-controls { display: flex; align-items: center; gap: 14px; padding: 12px; border-radius: 12px; background: var(--bg-soft); border: 1px solid var(--line); }
.mic-btn { width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center; background: var(--grad-brand); color: #fff; flex: none; box-shadow: 0 0 0 6px rgba(20, 184, 166, 0.18); }
.wave { display: flex; align-items: center; gap: 3px; height: 30px; flex: 1; }
.wave span { flex: 1; max-width: 4px; border-radius: 3px; background: var(--brand-500); animation: wave 1.2s ease-in-out infinite; transform-origin: center; }
.wave span:nth-child(3n) { animation-delay: -0.4s; } .wave span:nth-child(3n+1) { animation-delay: -0.8s; }
@keyframes wave { 50% { transform: scaleY(0.45); } }
.timer-ring { --p: 0.42; width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center; flex: none; background: conic-gradient(var(--brand-600) calc(var(--p) * 360deg), var(--line) 0); }
.timer-ring span { width: 38px; height: 38px; border-radius: 50%; background: #fff; display: grid; place-items: center; font-weight: 800; color: var(--ink); font-size: 12px; font-variant-numeric: tabular-nums; }
.float-chip {
  position: absolute; display: none; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 14px; background: rgba(255,255,255,0.96);
  box-shadow: var(--shadow-lg); font-size: var(--fs-xs); font-weight: 700; color: var(--ink); animation: bob 6s ease-in-out infinite;
}
.float-chip small { display: block; font-weight: 600; color: var(--muted); }
.float-chip .skill-chip { width: 32px; height: 32px; border-radius: 10px; }
.float-chip .skill-chip .icon { width: 16px; height: 16px; }
.fc-1 { left: 20px; bottom: -24px; }
.fc-2 { right: 18px; top: -24px; animation-delay: -3s; }
@media (min-width: 1100px) { .float-chip { display: flex; } .app .app-note { margin-top: 40px; text-align: right; padding-left: 230px; } .app-window { margin-top: 12px; } }
@keyframes bob { 50% { transform: translateY(-8px); } }
.app-note { margin: 14px 0 0; font-size: var(--fs-xs); color: var(--night-muted); text-align: center; }

/* Marquee of question types */
.marquee { margin-top: 64px; padding: 22px 0; border-top: 1px solid var(--night-line); overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.marquee-track { display: flex; gap: 12px; width: max-content; animation: marquee 50s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: var(--radius-pill); border: 1px solid var(--night-line); background: rgba(255,255,255,0.04); color: #cfe7e3; font-size: var(--fs-sm); font-weight: 600; white-space: nowrap; }
.marquee-track span i { width: 8px; height: 8px; border-radius: 50%; background: var(--skill); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Stats ---------- */
.stats-wrap { position: relative; z-index: 2; margin-top: -1px; }
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.stat { background: #fff; padding: 22px 22px; display: flex; flex-direction: column; gap: 4px; text-decoration: none; color: inherit; transition: background-color var(--dur) var(--ease); }
a.stat:hover { background: var(--bg-soft); }
.stat-value { font-family: var(--font-display); font-size: clamp(1.75rem, 1.4rem + 1vw, 2.25rem); font-weight: 800; color: var(--ink); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; line-height: 1.1; }
.stat-label { display: flex; align-items: center; gap: 8px; font-size: var(--fs-sm); font-weight: 600; color: var(--muted); }
.stat-label i { width: 10px; height: 10px; border-radius: 3px; background: var(--skill, var(--brand-600)); }
.stat-total { grid-column: 1 / -1; background: var(--grad-brand); }
.stat-total .stat-value { color: #fff; }
.stat-total .stat-label { color: #d9fbf5; }
@media (min-width: 768px) { .stats { grid-template-columns: repeat(5, 1fr); } .stat-total { grid-column: auto; order: -1; } }

/* ---------- Cards and grids ---------- */
.grid { display: grid; gap: 20px; }
@media (min-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } .grid-4 { grid-template-columns: repeat(4, 1fr); } }
.card { position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px; box-shadow: var(--shadow-sm); transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease); }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--muted); }
.card > :last-child { margin-bottom: 0; }
.card-link { display: flex; flex-direction: column; }
.card-link:hover { border-color: rgba(13, 148, 136, 0.4); box-shadow: var(--glow); transform: translateY(-3px); }
.card-link .stretched::after { content: ""; position: absolute; inset: 0; border-radius: inherit; z-index: 1; }
.card-link .stretched { color: var(--ink); text-decoration: none; }
.card-link .stretched:focus-visible { outline: none; }
.card-link:focus-within { outline: 3px solid var(--brand-500); outline-offset: 2px; }
.card-head { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.card-head h3 { margin: 0; }
.card-foot { margin-top: auto; padding-top: 18px; display: flex; align-items: center; justify-content: space-between; gap: 12px; font-size: var(--fs-sm); font-weight: 700; color: var(--brand-700); }
.card-foot .icon { transition: transform var(--dur) var(--ease); }
.card-link:hover .card-foot .icon { transform: translateX(4px); }

.skill-card { overflow: hidden; }
.skill-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 120px; background: radial-gradient(260px 120px at 0% 0%, var(--skill-bg), transparent 70%); opacity: 0.9; pointer-events: none; }
.skill-card > * { position: relative; }
.skill-card .count { font-family: var(--font-display); font-size: var(--fs-2xl); font-weight: 800; color: var(--ink); letter-spacing: -0.03em; }
.skill-card ul { list-style: none; padding: 0; margin: 12px 0 0; font-size: var(--fs-sm); color: var(--ink-2); }
.skill-card li { display: flex; gap: 8px; }
.skill-card li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--skill); margin-top: 0.6em; flex: none; }

/* ---------- Bento ---------- */
.bento { display: grid; gap: 18px; grid-template-columns: 1fr; }
@media (min-width: 768px) { .bento { grid-template-columns: repeat(6, 1fr); } .b-lg { grid-column: span 4; grid-row: span 2; } .b-sm { grid-column: span 2; } .b-md { grid-column: span 3; } }
.tile { position: relative; overflow: hidden; display: flex; flex-direction: column; gap: 6px; padding: 26px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-sm); transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease), border-color var(--dur) var(--ease); }
.tile:hover { box-shadow: var(--glow); transform: translateY(-3px); border-color: rgba(13, 148, 136, 0.4); }
.tile:focus-within { outline: 3px solid var(--brand-500); outline-offset: 2px; }
.tile h3 { font-size: var(--fs-lg); margin: 0; }
.tile h3 a { color: var(--ink); text-decoration: none; }
.tile h3 a::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.tile h3 a:focus-visible { outline: none; }
.tile p { font-size: var(--fs-sm); color: var(--muted); margin: 0; }
.tile .visual { margin-top: auto; padding-top: 20px; }
.tile-dark { background: var(--night-2); border-color: var(--night-3); color: var(--night-muted); }
.tile-dark h3 a { color: #fff; }
.tile-dark p { color: var(--night-muted); }
.tile-dark::before { content: ""; position: absolute; width: 420px; height: 420px; right: -160px; top: -200px; border-radius: 50%; background: radial-gradient(circle, rgba(20, 184, 166, 0.45), transparent 65%); pointer-events: none; }
.tile .tag { display: inline-flex; align-self: flex-start; font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.tile-dark .tag { color: var(--brand-300); }

.diff { background: rgba(255,255,255,0.06); border: 1px solid var(--night-line); border-radius: var(--radius); padding: 18px; color: #e7f6f3; font-size: var(--fs-base); line-height: 1.9; }
.diff .w-ok { border-bottom-color: #34d399; }
.diff .w-miss { background: rgba(248, 113, 113, 0.16); color: #fca5a5; }
.diff .w-extra { background: rgba(251, 191, 36, 0.18); color: #fde68a; border-radius: 4px; padding: 0 3px; }
.result-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 14px; }
.result-strip div { padding: 12px 14px; border-radius: 12px; background: rgba(255,255,255,0.06); border: 1px solid var(--night-line); }
.result-strip b { display: block; font-family: var(--font-display); font-size: 1.5rem; color: #fff; letter-spacing: -0.02em; line-height: 1.2; }
.result-strip span { font-size: var(--fs-xs); color: var(--night-muted); }
.legend { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 14px; font-size: var(--fs-xs); color: var(--night-muted); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 10px; height: 10px; border-radius: 3px; }
.dd-row { display: flex; flex-wrap: wrap; gap: 8px; }
.dd-chip { padding: 6px 12px; border-radius: 8px; background: var(--reading-bg); color: var(--reading); font-weight: 700; font-size: var(--fs-sm); border: 1px dashed #93c5fd; }
.dd-chip.used { opacity: 0.35; }
.dd-line { margin-top: 12px; font-size: var(--fs-sm); line-height: 2; }
.dd-gap { display: inline-block; min-width: 72px; padding: 0 8px; border-radius: 6px; border: 1.5px solid var(--reading); background: #fff; color: var(--reading); font-weight: 700; text-align: center; }
.ring-lg { --p: 0.65; width: 108px; height: 108px; border-radius: 50%; display: grid; place-items: center; background: conic-gradient(var(--accent-600) calc(var(--p) * 360deg), var(--line) 0); }
.ring-lg span { width: 88px; height: 88px; border-radius: 50%; background: #fff; display: grid; place-items: center; text-align: center; font-family: var(--font-display); font-weight: 800; color: var(--ink); line-height: 1.1; }
.ring-lg small { display: block; font-family: var(--font); font-size: 11px; color: var(--muted); font-weight: 600; }
.weekbar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.weekbar div { padding: 10px 8px; border-radius: 10px; background: var(--bg-soft); border: 1px solid var(--line); font-size: 11px; font-weight: 700; color: var(--muted); text-align: center; }
.weekbar div b { display: block; font-family: var(--font-display); font-size: var(--fs-base); color: var(--ink); }
.weekbar .on { background: var(--brand-50); border-color: var(--brand-100); color: var(--brand-800); }
.flash { padding: 16px; border-radius: 14px; background: linear-gradient(135deg, var(--brand-50), #fff); border: 1px solid var(--brand-100); }
.flash b { font-family: var(--font-display); font-size: var(--fs-xl); color: var(--ink); display: block; }
.flash span { font-size: var(--fs-sm); color: var(--muted); }
.bars { display: grid; gap: 9px; }
.bars div { display: grid; grid-template-columns: 70px 1fr; gap: 10px; align-items: center; font-size: 12px; font-weight: 700; color: var(--ink-2); }
.bars i { display: block; height: 8px; border-radius: 8px; background: var(--skill-grad); }
.example-tag { font-size: 11px; color: var(--muted); font-weight: 600; margin-top: 8px; }

/* Steps (connected) */
.steps { counter-reset: step; display: grid; gap: 20px; list-style: none; padding: 0; margin: 0; position: relative; }
@media (min-width: 900px) { .steps { grid-template-columns: repeat(3, 1fr); } .steps::before { content: ""; position: absolute; top: 44px; left: 16%; right: 16%; height: 2px; background: linear-gradient(90deg, transparent, var(--brand-300), var(--cyan), transparent); opacity: 0.6; } }
.steps > li { counter-increment: step; position: relative; margin: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px; box-shadow: var(--shadow-sm); }
.steps > li::before { content: counter(step, decimal-leading-zero); display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: var(--grad-brand); color: #fff; font-family: var(--font-display); font-weight: 800; margin-bottom: 16px; box-shadow: 0 8px 18px -8px rgba(13,148,136,0.8); position: relative; }
.steps h3 { font-size: var(--fs-lg); }
.steps p { color: var(--muted); margin: 0; font-size: var(--fs-sm); }
.steps ul { font-size: var(--fs-sm); color: var(--muted); margin: 8px 0 0; }

/* Link list */
.link-grid { display: grid; gap: 12px; }
@media (min-width: 640px) { .link-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .link-grid { grid-template-columns: repeat(3, 1fr); } }
.link-item { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 18px; min-height: 68px; border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; color: var(--ink); background: #fff; box-shadow: var(--shadow-sm); transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease); }
.link-item:hover { border-color: rgba(13,148,136,0.4); box-shadow: var(--glow); color: var(--ink); transform: translateY(-2px); }
.link-item strong { display: block; font-size: var(--fs-sm); }
.link-item small { display: block; color: var(--muted); font-size: var(--fs-xs); }
.link-item .go { width: 32px; height: 32px; border-radius: 10px; background: var(--brand-50); color: var(--brand-700); display: grid; place-items: center; flex: none; }
.link-item .go .icon { width: 16px; height: 16px; }

/* ---------- Pricing ---------- */
.plans { display: grid; gap: 24px; max-width: 940px; margin: 0 auto; }
@media (min-width: 768px) { .plans { grid-template-columns: 1fr 1fr; align-items: stretch; } }
.plan { position: relative; display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-xl); padding: 32px; box-shadow: var(--shadow-sm); }
.plan-featured { background: linear-gradient(#fff, #fff) padding-box, linear-gradient(135deg, #14b8a6, #22d3ee, #fbbf24) border-box; border: 2px solid transparent; box-shadow: 0 30px 60px -28px rgba(13, 148, 136, 0.55); }
.plan-flag { position: absolute; top: -13px; left: 32px; }
.plan h3 { font-size: var(--fs-xl); margin-bottom: 4px; }
.plan .muted { font-size: var(--fs-sm); }
.price { display: flex; align-items: baseline; gap: 8px; margin: 20px 0 6px; flex-wrap: wrap; }
.price b { font-family: var(--font-display); font-size: 3.5rem; line-height: 1; color: var(--ink); letter-spacing: -0.04em; }
.price span { color: var(--muted); font-weight: 600; }
.price s { color: var(--muted); font-weight: 600; }
.plan ul { list-style: none; padding: 0; margin: 22px 0 26px; }
.plan li { display: flex; gap: 10px; font-size: var(--fs-sm); color: var(--ink-2); }
.plan li + li { margin-top: 12px; }
.plan li .icon { color: #fff; background: var(--brand-600); border-radius: 50%; padding: 3px; width: 20px; height: 20px; margin-top: 1px; stroke-width: 3; }
.plan .btn { margin-top: auto; }
.compare { width: 100%; border-collapse: separate; border-spacing: 0; font-size: var(--fs-sm); background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.compare th, .compare td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line); }
.compare thead th { background: var(--bg-soft); color: var(--ink); font-weight: 700; }
.compare tbody th { font-weight: 600; color: var(--ink-2); }
.compare td { text-align: center; }
.compare tr:last-child > * { border-bottom: 0; }
.compare .yes { color: var(--success); font-weight: 700; }
.compare .yes .icon { margin: 0 auto; }
.compare .no { color: var(--muted); }
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); }

/* ---------- Accordion ---------- */
.accordion { display: grid; gap: 12px; }
.accordion details { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease); }
.accordion summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 16px; cursor: pointer; padding: 18px 20px; min-height: 60px; font-weight: 700; color: var(--ink); }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary .icon { transition: transform var(--dur) var(--ease); color: var(--brand-700); width: 28px; height: 28px; padding: 5px; border-radius: 8px; background: var(--brand-50); }
.accordion details[open] summary .icon { transform: rotate(180deg); }
.accordion details[open] { border-color: rgba(13,148,136,0.35); box-shadow: var(--shadow); }
.accordion .answer { padding: 0 20px 18px; color: var(--ink-2); }
.accordion .answer > :last-child { margin-bottom: 0; }

/* ---------- Callouts ---------- */
.callout { display: flex; gap: 12px; align-items: flex-start; padding: 16px 18px; border-radius: var(--radius); background: var(--info-bg); border: 1px solid #bfdbfe; color: var(--ink-2); font-size: var(--fs-sm); }
.callout .icon { color: var(--reading); margin-top: 2px; }
.callout p:last-child { margin-bottom: 0; }
.callout-warn { background: var(--warning-bg); border-color: #fde68a; }
.callout-warn .icon { color: var(--warning); }
.callout-brand { background: var(--brand-50); border-color: var(--brand-100); }
.callout-brand .icon { color: var(--brand-700); }

/* ---------- CTA band ---------- */
.cta-band { border-radius: var(--radius-xl); padding: 48px 28px; display: grid; gap: 24px; align-items: center; }
.cta-band h2 { margin-bottom: 10px; }
.cta-band p { margin: 0; max-width: 56ch; color: #c3e2dd; }
.cta-band .btn-row { position: relative; z-index: 1; }
@media (min-width: 900px) { .cta-band { grid-template-columns: 1fr auto; padding: 64px 64px; } }

/* ---------- Page hero (inner pages) ---------- */
.page-hero { padding: 48px 0 52px; }
.page-hero h1 { font-size: var(--fs-3xl); margin-bottom: 14px; }
.page-hero .lead { margin-bottom: 0; }
.page-hero .btn-row { margin-top: 26px; }
.page-hero .btn-outline { background: rgba(255,255,255,0.08); color: #fff; border-color: rgba(255,255,255,0.24); box-shadow: none; }
.page-hero .btn-outline:hover { background: rgba(255,255,255,0.16); color: #fff; }
@media (min-width: 1024px) { .page-hero { padding: 72px 0 72px; } .page-hero h1 { font-size: clamp(2.5rem, 1.6rem + 2.4vw, 3.5rem); } }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; padding: 0; margin: 0 0 18px; font-size: var(--fs-sm); color: var(--night-muted); }
.breadcrumb li { display: flex; align-items: center; gap: 6px; margin: 0; }
.breadcrumb li + li::before { content: "/"; opacity: 0.5; }
.breadcrumb a { color: var(--night-muted); text-decoration: none; }
.breadcrumb a:hover { color: #fff; text-decoration: underline; }
.breadcrumb [aria-current] { color: #fff; }
.meta-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.meta { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: var(--radius-pill); background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.14); font-size: var(--fs-sm); font-weight: 600; color: #dff4f0; }
.meta .icon { color: var(--brand-300); width: 18px; height: 18px; }
a.meta { text-decoration: none; min-height: 44px; transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease); }
a.meta:hover { background: rgba(255,255,255,0.14); color: #fff; border-color: rgba(255,255,255,0.3); }
.page-hero .badge-pte { background: rgba(94, 234, 212, 0.14); color: var(--brand-300); border-color: rgba(94, 234, 212, 0.3); }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; font-size: var(--fs-sm); color: var(--night-muted); margin-top: 18px; }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }

/* ---------- Layout with sidebar ---------- */
.with-aside { display: grid; gap: 32px; }
@media (min-width: 1024px) { .with-aside { grid-template-columns: minmax(0, 1fr) 340px; gap: 44px; align-items: start; } .aside-sticky { position: sticky; top: calc(var(--header-h) + 24px); } }
.aside { display: grid; gap: 20px; }
.aside .card { padding: 22px; }
.aside h3 { font-size: var(--fs-lg); }
.aside .card-promo { background: var(--night-2); border-color: var(--night-3); color: var(--night-muted); overflow: hidden; }
.aside .card-promo h3 { color: #fff; }
.aside .card-promo p { color: var(--night-muted); }
.aside .card-promo strong { color: #fff; }
.aside .card-promo::before { content: ""; position: absolute; width: 260px; height: 260px; right: -110px; top: -120px; border-radius: 50%; background: radial-gradient(circle, rgba(20,184,166,0.5), transparent 65%); pointer-events: none; }
.aside .card-promo > * { position: relative; }

/* ---------- Toolbar, tabs, search ---------- */
.toolbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; padding: 4px; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 12px; }
.tab { display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 8px 14px; border: 0; border-radius: 9px; background: transparent; color: var(--ink-2); font: inherit; font-size: var(--fs-sm); font-weight: 700; cursor: pointer; transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease); }
.tab:hover { color: var(--ink); background: #fff; }
.tab[aria-pressed="true"] { background: #fff; color: var(--brand-800); box-shadow: 0 1px 3px rgba(11,27,43,0.1); }
.tab .count { font-size: var(--fs-xs); color: var(--muted); font-weight: 700; }
.search { position: relative; flex: 1 1 260px; max-width: 360px; }
.search .icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }
.search input[type="search"] { padding-left: 44px; }

/* ---------- Question list ---------- */
.progress-line { display: flex; align-items: center; gap: 14px; font-size: var(--fs-sm); color: var(--muted); margin-bottom: 16px; }
.progress-bar { flex: 1; max-width: 260px; height: 8px; border-radius: 99px; background: var(--line); overflow: hidden; }
.progress-bar span { display: block; height: 100%; background: var(--grad-brand); border-radius: inherit; min-width: 6px; }
.q-list { list-style: none; padding: 0; margin: 0; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; background: #fff; box-shadow: var(--shadow-sm); }
.q-item { display: grid; grid-template-columns: 1fr auto; gap: 8px 16px; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--line); margin: 0; transition: background-color var(--dur) var(--ease); }
.q-item:last-child { border-bottom: 0; }
.q-item:hover { background: var(--bg-soft); }
.q-item[hidden] { display: none; }
.q-main { display: flex; align-items: center; gap: 14px; min-width: 0; }
.q-id { font-size: var(--fs-xs); font-weight: 700; color: var(--muted); font-variant-numeric: tabular-nums; min-width: 40px; }
.q-title { font-weight: 700; color: var(--ink); }
.q-tags { display: flex; gap: 6px; flex-wrap: wrap; grid-column: 1 / -1; padding-left: 54px; }
.q-item > .btn { grid-column: 2; grid-row: 1; }
.q-empty { padding: 32px; text-align: center; color: var(--muted); }
@media (min-width: 768px) {
  .q-item { grid-template-columns: 1fr auto auto; }
  .q-item > .btn { grid-column: 3; }
  .q-tags { grid-column: auto; padding-left: 0; }
  .q-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
}
.modes { display: grid; gap: 12px; margin: 0 0 28px; }
@media (min-width: 640px) { .modes { grid-template-columns: repeat(3, 1fr); } }
.mode { padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); }
.mode strong { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }
.mode strong .icon { color: var(--brand-700); }
.mode p { font-size: var(--fs-sm); color: var(--muted); margin: 0; }

/* Type rows */
.type-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.type-row { position: relative; display: grid; grid-template-columns: auto 1fr auto; gap: 4px 14px; align-items: center; margin: 0; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease); }
.type-row:hover { border-color: rgba(13,148,136,0.4); box-shadow: var(--glow); transform: translateY(-1px); }
.type-row:focus-within { outline: 3px solid var(--brand-500); outline-offset: 2px; }
.type-row .skill-chip { width: 40px; height: 40px; grid-row: span 2; background: var(--skill-grad); color: #fff; }
.type-row a { color: var(--ink); font-weight: 700; text-decoration: none; }
.type-row a::after { content: ""; position: absolute; inset: 0; border-radius: inherit; }
.type-row a:focus-visible { outline: none; }
.type-row .desc { grid-column: 2; font-size: var(--fs-sm); color: var(--muted); }
.type-row .right { grid-row: span 2; grid-column: 3; display: flex; align-items: center; gap: 10px; }
.type-row .qcount { font-size: var(--fs-sm); font-weight: 700; color: var(--ink-2); font-variant-numeric: tabular-nums; white-space: nowrap; }
.type-row .go { color: var(--brand-700); transition: transform var(--dur) var(--ease); }
.type-row:hover .go { transform: translateX(3px); }
.type-row .badges { display: inline-flex; gap: 6px; margin-left: 8px; vertical-align: 2px; }
@media (max-width: 520px) { .type-row { grid-template-columns: auto 1fr; } .type-row .right { grid-column: 2; grid-row: auto; } }
.module-group + .module-group { margin-top: 52px; }
.module-head { display: flex; flex-wrap: wrap; gap: 12px 16px; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.module-head .left { display: flex; align-items: center; gap: 14px; }
.module-head h2 { font-size: var(--fs-2xl); margin: 0; }
.module-head p { margin: 2px 0 0; color: var(--muted); font-size: var(--fs-sm); }
.module-head .skill-chip { background: var(--skill-grad); color: #fff; width: 48px; height: 48px; }

/* ---------- Mock tests ---------- */
.mock { display: flex; flex-direction: column; gap: 18px; }
.mock-head { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; flex-wrap: wrap; }
.mock-head h3 { font-size: var(--fs-2xl); margin: 0; }
.mock-facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.fact { padding: 14px 16px; border-radius: var(--radius); background: var(--bg-soft); border: 1px solid var(--line); }
.fact b { display: block; font-family: var(--font-display); font-size: var(--fs-3xl); color: var(--ink); line-height: 1.05; letter-spacing: -0.03em; }
.fact span { font-size: var(--fs-xs); color: var(--muted); font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }
.timeline { display: flex; gap: 4px; height: 14px; border-radius: 99px; overflow: hidden; }
.timeline span { display: block; height: 100%; }
.timeline-legend { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; font-size: var(--fs-sm); }
.timeline-legend li { display: flex; align-items: center; gap: 10px; margin: 0; }
.timeline-legend i { width: 12px; height: 12px; border-radius: 3px; flex: none; }
.timeline-legend b { margin-left: auto; color: var(--ink); font-variant-numeric: tabular-nums; }

/* ---------- Blog ---------- */
.post-grid { display: grid; gap: 20px; }
@media (min-width: 640px) { .post-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .post-grid { grid-template-columns: repeat(3, 1fr); } }
.post-card { display: flex; flex-direction: column; gap: 12px; overflow: hidden; padding-top: 0; }
.post-card .cover { margin: 0 -26px 6px; height: 112px; display: grid; place-items: center; background: var(--cover, var(--grad-brand)); position: relative; overflow: hidden; }
.post-card .cover::after { content: ""; position: absolute; inset: 0; background-image: radial-gradient(rgba(255,255,255,0.18) 1px, transparent 1px); background-size: 16px 16px; }
.post-card .cover .icon { width: 36px; height: 36px; color: #fff; position: relative; z-index: 1; opacity: 0.95; }
.post-card[data-cat="ielts"] .cover, .post-card.cat-ielts .cover { --cover: linear-gradient(135deg, #60a5fa, #1d4ed8); }
.post-card .top { display: flex; align-items: center; gap: 10px; font-size: var(--fs-xs); color: var(--muted); font-weight: 600; }
.post-card h3 { font-size: var(--fs-lg); margin: 0; line-height: 1.35; }
.post-card[hidden] { display: none; }
.pagination { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; margin-top: 40px; font-size: var(--fs-sm); color: var(--muted); }
.pagination ul { display: flex; gap: 6px; list-style: none; padding: 0; margin: 0; }
.pagination li { margin: 0; }
.pagination a, .pagination span[aria-current] { display: grid; place-items: center; min-width: 44px; height: 44px; padding: 0 10px; border-radius: var(--radius-sm); border: 1px solid var(--line); text-decoration: none; color: var(--ink); font-weight: 700; background: #fff; }
.pagination a:hover { border-color: var(--brand-600); color: var(--brand-800); }
.pagination span[aria-current] { background: var(--grad-brand); border-color: transparent; color: #fff; }
.article { font-size: 1.0625rem; line-height: 1.8; color: var(--ink-2); }
.article h2 { font-size: var(--fs-2xl); margin-top: 1.8em; }
.article li::marker { color: var(--brand-700); }
.tasklist { list-style: none; padding: 0 !important; display: grid; gap: 10px; }
.tasklist li { display: flex; gap: 12px; align-items: flex-start; margin: 0; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.tasklist input { width: 20px; height: 20px; margin-top: 4px; accent-color: var(--brand-700); flex: none; }
.example { display: grid; gap: 8px; padding: 16px 18px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--bg-soft); font-size: var(--fs-sm); }
.example div { display: flex; gap: 10px; align-items: center; }
.example .ok { color: var(--success); }
.example .bad { color: var(--danger); }

/* ---------- Vocab ---------- */
.word-grid { display: grid; gap: 12px; }
@media (min-width: 640px) { .word-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .word-grid { grid-template-columns: repeat(3, 1fr); } }
.word { padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); border-left: 3px solid var(--brand-500); }
.word[hidden] { display: none; }
.word b { display: block; font-family: var(--font-display); font-size: var(--fs-lg); color: var(--ink); }
.word span { font-size: var(--fs-sm); color: var(--muted); }
.word-group + .word-group { margin-top: 36px; }
.word-group[hidden] { display: none; }
.word-group h2 { font-size: var(--fs-xl); display: flex; align-items: center; gap: 10px; }

/* ---------- Study plan ---------- */
.weeks { display: grid; gap: 20px; }
@media (min-width: 900px) { .weeks { grid-template-columns: repeat(2, 1fr); } }
.week { overflow: hidden; }
.week::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--grad-brand); }
.week .wk { font-size: var(--fs-xs); font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; color: var(--brand-700); }
.week h3 { margin: 4px 0 12px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 12px; padding: 0; list-style: none; }
.chips li { margin: 0; }
.chips a, .chips span { display: inline-flex; align-items: center; min-height: 36px; padding: 6px 12px; border-radius: var(--radius-pill); border: 1px solid var(--line); background: var(--bg-soft); color: var(--ink-2); font-size: var(--fs-sm); font-weight: 600; text-decoration: none; }
.chips a:hover { border-color: var(--brand-600); color: var(--brand-800); background: var(--brand-50); }
.sitting { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; counter-reset: sit; }
.sitting li { counter-increment: sit; display: flex; gap: 14px; align-items: flex-start; margin: 0; padding: 16px 18px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-sm); }
.sitting li::before { content: counter(sit); width: 30px; height: 30px; border-radius: 9px; background: var(--grad-brand); color: #fff; display: grid; place-items: center; font-weight: 800; flex: none; font-size: var(--fs-sm); }

/* ---------- Score report gate ---------- */
.gate { position: relative; min-height: 420px; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; background: #fff; box-shadow: var(--shadow-sm); }
.gate-preview { padding: 28px; display: grid; gap: 18px; filter: blur(1.5px); opacity: 0.6; pointer-events: none; user-select: none; }
.skeleton-row { display: grid; grid-template-columns: 120px 1fr; gap: 16px; align-items: center; }
.skeleton { height: 14px; border-radius: 99px; background: var(--line); }
.skeleton-bar { height: 14px; border-radius: 99px; background: var(--skill-grad); opacity: 0.6; }
.gate-overlay { position: absolute; inset: 0; display: grid; place-items: center; padding: 24px; background: linear-gradient(180deg, rgba(255,255,255,0.4), rgba(255,255,255,0.92)); }
.gate-box { max-width: 420px; text-align: center; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 30px; box-shadow: var(--shadow-lg); }
.gate-box .skill-chip { margin: 0 auto 14px; background: var(--grad-brand); color: #fff; }

/* ---------- Forms ---------- */
.field { display: grid; gap: 6px; margin-bottom: 18px; align-content: start; }
.field label, .field .label { font-weight: 700; color: var(--ink); font-size: var(--fs-sm); }
.field .hint { font-size: var(--fs-xs); color: var(--muted); }
.field .error { display: none; align-items: center; gap: 6px; font-size: var(--fs-xs); color: var(--danger); font-weight: 600; }
.field.has-error .error { display: flex; }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: var(--danger); }
input[type="text"], input[type="email"], input[type="password"], input[type="search"], select, textarea {
  width: 100%; min-height: 50px; padding: 12px 14px; border: 1.5px solid var(--line-strong); border-radius: 12px; font: inherit; font-size: var(--fs-base); color: var(--ink); background: #fff;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
textarea { min-height: 150px; resize: vertical; }
input:hover, select:hover, textarea:hover { border-color: var(--muted); }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--brand-600); box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.2); }
.password-wrap { position: relative; }
.password-wrap input { padding-right: 56px; }
.password-toggle { position: absolute; right: 4px; top: 50%; transform: translateY(-50%); width: 44px; height: 44px; display: grid; place-items: center; border: 0; background: transparent; color: var(--muted); cursor: pointer; border-radius: var(--radius-sm); }
.password-toggle:hover { color: var(--ink); background: var(--bg-soft); }
.check { display: flex; align-items: center; gap: 10px; min-height: 44px; font-size: var(--fs-sm); color: var(--ink-2); cursor: pointer; }
.check input { width: 20px; height: 20px; accent-color: var(--brand-700); }
.form-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.radio-cards { display: grid; gap: 10px; }
@media (min-width: 640px) { .radio-cards { grid-template-columns: repeat(3, 1fr); } }
.radio-card { position: relative; display: flex; gap: 10px; align-items: flex-start; padding: 14px; border: 1.5px solid var(--line-strong); border-radius: var(--radius); cursor: pointer; font-size: var(--fs-sm); transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease); }
.radio-card input { margin-top: 3px; accent-color: var(--brand-700); width: 18px; height: 18px; flex: none; }
.radio-card:has(input:checked) { border-color: var(--brand-600); background: var(--brand-50); }
.radio-card:has(input:focus-visible) { outline: 3px solid var(--brand-500); outline-offset: 2px; }
.radio-card strong { display: block; }
.radio-card small { color: var(--muted); }
.form-note { font-size: var(--fs-xs); color: var(--muted); margin-top: 14px; }
.pagination { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 28px; padding: 0; list-style: none; }
.pagination .page-link { display: inline-flex; min-width: 44px; min-height: 44px; align-items: center; justify-content: center; padding: 0 12px; border-radius: 12px; border: 1px solid var(--line); color: var(--ink); text-decoration: none; background: #fff; }
.pagination .page-item.active .page-link { background: var(--ink); color: #fff; border-color: var(--ink); }
.pagination .page-item.disabled .page-link { opacity: .45; }
.form-success { display: none; }
.form-success.is-visible { display: flex; }

/* ---------- Auth pages ---------- */
.auth { min-height: 100vh; display: grid; }
@media (min-width: 960px) { .auth { grid-template-columns: 1.05fr 1fr; } }
.auth-panel { display: none; padding: 48px; }
@media (min-width: 960px) { .auth-panel { display: flex; flex-direction: column; justify-content: space-between; } }
.auth-panel h2 { font-size: var(--fs-3xl); max-width: 15ch; }
.auth-panel ul { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 14px; color: #d7efeb; }
.auth-panel li { display: flex; gap: 12px; align-items: flex-start; margin: 0; }
.auth-panel li .icon { color: var(--brand-300); margin-top: 3px; }
.auth-panel .fine { font-size: var(--fs-xs); color: var(--night-muted); margin: 0; }
.auth-panel .app { margin-top: 36px; max-width: 460px; }
.auth-main { display: flex; flex-direction: column; padding: 24px var(--gutter); background: radial-gradient(600px 300px at 100% 0%, rgba(20,184,166,0.08), transparent 70%), #fff; }
.auth-main .logo img { height: 34px; }
@media (min-width: 960px) { .auth-main .mobile-logo { display: none; } }
.auth-box { width: 100%; max-width: 420px; margin: auto; padding: 32px 0; }
.auth-box h1 { font-size: var(--fs-3xl); margin-bottom: 8px; }
.auth-box .lead { font-size: var(--fs-base); color: var(--muted); margin-bottom: 28px; }
.auth-foot { text-align: center; font-size: var(--fs-sm); color: var(--muted); margin-top: 24px; }
.auth-copy { text-align: center; font-size: var(--fs-xs); color: var(--muted); }

/* ---------- Content pages ---------- */
.prose { max-width: 72ch; }
.prose p, .prose li { color: var(--ink-2); }
.toc { list-style: none; padding: 0; margin: 0; display: grid; gap: 2px; font-size: var(--fs-sm); }
.toc li { margin: 0; }
.toc a { display: flex; align-items: center; min-height: 40px; padding: 6px 12px; border-left: 2px solid var(--line); color: var(--ink-2); text-decoration: none; }
.toc a:hover, .toc a.is-active { border-color: var(--brand-600); color: var(--brand-800); background: var(--brand-50); }
.split { display: grid; gap: 20px; }
@media (min-width: 768px) { .split { grid-template-columns: 1fr 1fr; } }
.list-check, .list-x { list-style: none; padding: 0; }
.list-check li, .list-x li { display: flex; gap: 10px; align-items: flex-start; }
.list-check .icon { color: var(--success); margin-top: 3px; width: 18px; height: 18px; }
.list-x .icon { color: var(--danger); margin-top: 3px; width: 18px; height: 18px; }

/* ---------- Footer ---------- */
.site-footer { padding: 72px 0 28px; font-size: var(--fs-sm); }
.site-footer::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(94,234,212,0.5), rgba(34,211,238,0.5), transparent); }
.footer-grid { display: grid; gap: 36px; }
@media (min-width: 768px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; } }
.site-footer h2 { color: #fff; font-family: var(--font); font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 14px; font-weight: 700; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 2px; }
.site-footer li { margin: 0; }
.site-footer a { color: #c9dcd9; text-decoration: none; display: inline-flex; min-height: 36px; align-items: center; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.footer-brand p { margin: 18px 0 0; max-width: 40ch; }
.footer-disclaimer { margin-top: 16px; padding: 12px 14px; border-radius: var(--radius-sm); border: 1px solid var(--night-line); background: rgba(255,255,255,0.03); color: #c9dcd9; font-size: var(--fs-xs); }
.footer-bottom { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--night-line); display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; font-size: var(--fs-xs); }
.footer-bottom a { min-height: auto; color: #e2f1ef; text-decoration: underline; }

/* ---------- Utilities ---------- */
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }
.mt-2 { margin-top: 8px; } .mt-4 { margin-top: 16px; } .mt-6 { margin-top: 24px; } .mt-8 { margin-top: 32px; } .mt-10 { margin-top: 40px; }
.center { text-align: center; }

/* ---------- Motion preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  .card-link:hover, .tile:hover, .link-item:hover, .type-row:hover { transform: none; }
  .marquee-track { width: auto; flex-wrap: wrap; justify-content: center; }
  .marquee-track [aria-hidden="true"] { display: none; }
}

/* ---------- Print ---------- */
@media print { .site-header, .announce, .site-footer, .nav-toggle, .cta-band, .aurora { display: none !important; } body { color: #000; } }