/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg: #FFFFFF;
  --bg-alt: #F4F6FB;
  --surface: #ECEFF8;
  --border: #DFE3EE;
  --text: #131726;
  --text-dim: #566074;
  --accent: #3B4BDB;
  --accent-dark: #2F3DB8;
  --accent-soft: #E7EAFC;
  --amber: #F5A524;
  --ok: #17805A;
  --ok-soft: #E3F4EC;
  --bad: #C2342F;
  --bad-soft: #FBE9E8;
  --font-heading: 'Archivo', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
  --radius: 14px;
  --container-w: 1080px;
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-body); font-size: 16px; line-height: 1.6; color: var(--text); background: var(--bg);
  -webkit-font-smoothing: antialiased; overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { color: var(--text-dim); margin-bottom: 1em; text-wrap: pretty; }
h1, h2, h3 { font-family: var(--font-heading); color: var(--text); line-height: 1.1; letter-spacing: -0.02em; text-wrap: balance; margin-bottom: 0.5em; }
h1 { font-size: clamp(2rem, 5vw, 3.1rem); font-weight: 900; }
h2 { font-size: clamp(1.5rem, 3.4vw, 2.1rem); font-weight: 800; }
h3 { font-size: 1.08rem; font-weight: 700; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
[hidden] { display: none !important; }

.skip-link { position: fixed; top: -100px; left: 1rem; padding: .6rem 1rem; background: var(--text); color: #fff; z-index: 9999; border-radius: 8px; }
.skip-link:focus { top: 1rem; }
.container { max-width: var(--container-w); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }
.section { padding: 64px 0; }
.section-alt { background: var(--bg-alt); }
.eyebrow { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 0.6em; }
.lead { font-size: 1.1rem; max-width: 620px; }

/* =============================================================
   3. Buttons
   ============================================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 24px; border-radius: 12px; font-weight: 700; font-family: var(--font-heading);
  transition: background .15s ease, transform .15s ease, border-color .15s ease;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-1px); }
.btn-outline { border: 2px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-amber { background: var(--amber); color: var(--text); }
.btn-amber:hover { transform: translateY(-1px); filter: brightness(0.96); }
.btn-block { width: 100%; }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }

/* =============================================================
   4. Header / footer
   ============================================================= */
.partner-bar { background: var(--text); color: #cfd4e4; font-size: 0.82rem; }
.partner-bar .container { display: flex; justify-content: space-between; gap: 12px; padding-top: 8px; padding-bottom: 8px; flex-wrap: wrap; }
.partner-bar a { color: #fff; font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }

.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,0.96); backdrop-filter: blur(6px); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-heading); font-weight: 900; font-size: 1.45rem; letter-spacing: 0.04em; }
.brand svg { width: 34px; height: 34px; }
.brand span b { color: var(--accent); }
.main-nav ul { list-style: none; display: flex; gap: 22px; padding: 0; margin: 0; }
.main-nav a { font-weight: 600; font-size: 0.92rem; color: var(--text-dim); padding: 6px 0; }
.main-nav a:hover, .main-nav a.is-active { color: var(--accent); }
.nav-toggle { display: none; width: 42px; height: 42px; flex-direction: column; gap: 5px; align-items: center; justify-content: center; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; }

.site-footer { background: var(--text); color: #cfd4e4; padding: 44px 0 30px; margin-top: 0; }
.site-footer p { color: #aab1c6; }
.footer-top { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-brand { font-family: var(--font-heading); font-weight: 900; font-size: 1.3rem; letter-spacing: 0.04em; color: #fff; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 10px 20px; }
.footer-nav a { color: #cfd4e4; font-size: 0.9rem; }
.footer-nav a:hover { color: #fff; }
.footer-copy { margin: 22px 0 0; font-size: 0.82rem; }
.footer-copy a { color: #fff; text-decoration: underline; text-underline-offset: 3px; }

/* =============================================================
   5. Hero
   ============================================================= */
.hero { padding: 56px 0 40px; background: linear-gradient(180deg, var(--accent-soft) 0%, #fff 100%); }
.hero-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero-visual { max-width: 420px; margin: 0 auto; width: 100%; }
.hero-visual svg { width: 100%; height: auto; }
.trust-row { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 22px; font-size: 0.88rem; color: var(--text-dim); }
.trust-row span::before { content: "✓ "; color: var(--ok); font-weight: 800; }

.page-head { padding: 44px 0 8px; }

/* =============================================================
   6. Cards & grids
   ============================================================= */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 28px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 28px; }
.card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 22px; }
.card p { margin-bottom: 0; font-size: 0.94rem; }
.card-link { display: block; transition: border-color .15s ease, transform .15s ease; }
.card-link:hover { border-color: var(--accent); transform: translateY(-2px); }
.card .icon { width: 46px; height: 46px; border-radius: 12px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; margin-bottom: 14px; }
.card .icon svg { width: 24px; height: 24px; }
.card .more { display: inline-block; margin-top: 12px; color: var(--accent); font-weight: 700; font-size: 0.9rem; }

.level-strip { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-top: 26px; }
.level-chip { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 14px; text-align: center; }
.level-chip b { display: block; font-family: var(--font-heading); font-size: 1.5rem; color: var(--accent); }
.level-chip span { font-size: 0.82rem; color: var(--text-dim); }

.course { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 24px; }
.course + .course { margin-top: 18px; }
.course-head { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.course-badge { background: var(--accent); color: #fff; font-family: var(--font-heading); font-weight: 900; font-size: 1.1rem; border-radius: 10px; padding: 6px 14px; }
.course-head h3 { margin: 0; font-size: 1.2rem; }
.course ol { padding-left: 1.2rem; color: var(--text-dim); columns: 2; column-gap: 32px; font-size: 0.95rem; }
.course li { margin-bottom: 4px; break-inside: avoid; }
.course-meta { font-size: 0.85rem; color: var(--text-dim); margin: 12px 0 0; }
.note { background: var(--accent-soft); border-radius: var(--radius); padding: 16px 18px; color: var(--text); font-size: 0.94rem; margin-top: 22px; }
.note p { color: var(--text); margin: 0; }

.band { background: var(--accent); color: #fff; border-radius: 20px; padding: 36px 32px; display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.band h2 { color: #fff; margin-bottom: 0.3em; }
.band p { color: rgba(255,255,255,0.88); margin: 0; max-width: 520px; }

/* =============================================================
   7. Tool card (shared by test / flashcards / verbs)
   ============================================================= */
.tool-card { background: #fff; border: 1px solid var(--border); border-radius: 18px; padding: 28px 26px; box-shadow: 0 10px 30px rgba(19,23,38,0.06); margin-top: 22px; }
.privacy-badge { font-size: 0.86rem; color: var(--text-dim); margin-top: 14px; }
.limits { font-size: 0.84rem; color: var(--text-dim); margin-top: 6px; }
.noscript-note { background: var(--bad-soft); color: var(--bad); padding: 14px 16px; border-radius: 12px; font-weight: 600; margin-top: 18px; }

.progress { height: 8px; border-radius: 99px; background: var(--surface); overflow: hidden; margin-bottom: 18px; }
.progress > i { display: block; height: 100%; background: var(--accent); width: 0; transition: width .25s ease; }
.q-count { font-size: 0.82rem; font-weight: 700; color: var(--accent); letter-spacing: 0.06em; text-transform: uppercase; }
.q-text { font-family: var(--font-heading); font-size: clamp(1.25rem, 3vw, 1.6rem); font-weight: 700; margin: 8px 0 18px; color: var(--text); }
.options { display: grid; gap: 10px; }
.option { text-align: left; border: 2px solid var(--border); border-radius: 12px; padding: 13px 16px; font-weight: 600; background: #fff; transition: border-color .12s ease, background .12s ease; }
.option:hover { border-color: var(--accent); background: var(--accent-soft); }

.result-level { font-family: var(--font-heading); font-weight: 900; font-size: clamp(3.4rem, 12vw, 5.4rem); color: var(--accent); line-height: 1; }
.result-score { font-size: 0.9rem; color: var(--text-dim); }

.deck-picker { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.chip { border: 2px solid var(--border); border-radius: 99px; padding: 7px 16px; font-weight: 700; font-size: 0.88rem; background: #fff; }
.chip:hover { border-color: var(--accent); }
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }

.flash { perspective: 900px; }
.flash-card {
  position: relative; min-height: 210px; border-radius: 18px; background: var(--accent-soft); border: 2px solid var(--accent);
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 26px 22px; cursor: pointer; width: 100%;
}
.flash-word { font-family: var(--font-heading); font-weight: 900; font-size: clamp(2rem, 7vw, 3rem); color: var(--text); }
.flash-hint { font-size: 0.85rem; color: var(--text-dim); margin-top: 10px; }
.flash-example { font-style: italic; color: var(--text-dim); margin: 10px 0 0; }
.speak { margin-top: 12px; display: inline-flex; align-items: center; gap: 6px; font-weight: 700; color: var(--accent); font-size: 0.9rem; padding: 6px 12px; border-radius: 99px; background: #fff; }
.flash-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 16px; }
.btn-again { background: var(--bad-soft); color: var(--bad); }
.btn-know { background: var(--ok-soft); color: var(--ok); }
.stat-row { display: flex; justify-content: space-between; font-size: 0.86rem; color: var(--text-dim); margin-top: 14px; flex-wrap: wrap; gap: 6px; }

.verb-prompt { font-family: var(--font-heading); font-size: clamp(1.4rem, 4vw, 2rem); font-weight: 800; color: var(--text); }
.verb-prompt small { display: block; font-family: var(--font-body); font-weight: 500; font-size: 0.95rem; color: var(--text-dim); margin-top: 4px; }
.verb-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 18px 0; }
.verb-form label { font-size: 0.82rem; font-weight: 700; color: var(--text-dim); display: block; margin-bottom: 6px; }
.verb-form input { width: 100%; padding: 12px 14px; border: 2px solid var(--border); border-radius: 10px; font: inherit; }
.verb-form input:focus { outline: none; border-color: var(--accent); }
.verb-form input.ok { border-color: var(--ok); background: var(--ok-soft); }
.verb-form input.bad { border-color: var(--bad); background: var(--bad-soft); }
.verb-feedback { min-height: 1.6em; font-weight: 700; margin-top: 4px; }
.verb-feedback.ok { color: var(--ok); }
.verb-feedback.bad { color: var(--bad); }

.table-wrap { overflow-x: auto; margin-top: 18px; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; min-width: 480px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); }
th { background: var(--bg-alt); font-family: var(--font-heading); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.05em; }
tr:last-child td { border-bottom: 0; }
.search { width: 100%; padding: 12px 14px; border: 2px solid var(--border); border-radius: 10px; font: inherit; margin-top: 14px; }
.search:focus { outline: none; border-color: var(--accent); }

.phrase { background: #fff; border: 1px solid var(--border); border-left: 5px solid var(--amber); border-radius: var(--radius); padding: 22px 24px; }
.phrase q { display: block; quotes: none; font-family: var(--font-heading); font-weight: 800; font-size: clamp(1.3rem, 3.4vw, 1.8rem); color: var(--text); }
.phrase p { margin: 6px 0 0; }

.ad-slot { margin: 28px auto; min-height: 90px; max-width: 728px; border: 1px dashed var(--border); border-radius: 10px; display: grid; place-items: center; font-size: 0.78rem; color: var(--text-dim); }

details { border: 1px solid var(--border); border-radius: 12px; padding: 14px 18px; background: #fff; }
details + details { margin-top: 10px; }
summary { font-weight: 700; cursor: pointer; font-family: var(--font-heading); }
details p { margin: 10px 0 0; }

.rules { padding-left: 1.2rem; color: var(--text-dim); }
.rules li { margin-bottom: 6px; }

/* =============================================================
   7b. Gratis vs Pro
   ============================================================= */
.main-nav a.nav-pro { background: var(--amber); color: var(--text); padding: 6px 14px; border-radius: 99px; font-weight: 800; }
.main-nav a.nav-pro:hover, .main-nav a.nav-pro.is-active { color: var(--text); filter: brightness(0.95); }

.badge { display: inline-block; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; padding: 4px 11px; border-radius: 99px; background: var(--amber); color: var(--text); }
.badge-free { background: var(--ok-soft); color: var(--ok); }
.badge-soon { background: var(--surface); color: var(--text-dim); }

.plan-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 28px; align-items: stretch; }
.plan { border: 1px solid var(--border); border-radius: 18px; padding: 26px 24px; background: #fff; display: flex; flex-direction: column; }
.plan h3 { font-size: 1.35rem; margin: 10px 0 4px; }
.plan > p { font-size: 0.95rem; }
.plan-pro { border: 2px solid var(--accent); background: linear-gradient(180deg, var(--accent-soft) 0%, #fff 55%); }
.plan .btn { margin-top: auto; align-self: flex-start; }
.ticks { list-style: none; padding: 0; margin: 6px 0 22px; }
.ticks li { position: relative; padding-left: 26px; margin-bottom: 9px; color: var(--text-dim); font-size: 0.95rem; }
.ticks li::before { content: "✓"; position: absolute; left: 0; color: var(--ok); font-weight: 900; }
.plan-pro .ticks li::before { color: var(--accent); }

.pro-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 28px; }
.pro-card { background: #fff; border: 1px solid var(--border); border-radius: 18px; padding: 24px 22px; display: flex; flex-direction: column; border-top: 5px solid var(--accent); }
.pro-card.alt { border-top-color: var(--amber); }
.pro-card .icon { width: 50px; height: 50px; border-radius: 14px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; margin-bottom: 12px; }
.pro-card.alt .icon { background: #FFF1D6; color: #9A5E00; }
.pro-card .icon svg { width: 26px; height: 26px; }
.pro-card h3 { font-size: 1.2rem; margin: 8px 0 2px; }
.pro-card .tagline { font-family: var(--font-heading); font-weight: 700; color: var(--accent); font-size: 0.95rem; margin-bottom: 10px; }
.pro-card.alt .tagline { color: #9A5E00; }
.pro-card .ticks { margin-bottom: 18px; }
.pro-card .btn { margin-top: auto; align-self: flex-start; }

.steps3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 24px; counter-reset: s; }
.steps3 .card { counter-increment: s; position: relative; padding-top: 34px; }
.steps3 .card::before { content: counter(s); position: absolute; top: -16px; left: 22px; background: var(--accent); color: #fff; font-family: var(--font-heading); font-weight: 900; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; }

.phrasal { background: #fff; border: 1px solid var(--border); border-left: 5px solid var(--accent); border-radius: var(--radius); padding: 22px 24px; }
.phrasal q { display: block; quotes: none; font-family: var(--font-heading); font-weight: 900; font-size: clamp(1.6rem, 4.4vw, 2.3rem); color: var(--accent); }
.phrasal p { margin: 6px 0 0; }
.phrasal-ex { font-style: italic; }
.teaser-note { font-size: 0.9rem; color: var(--text-dim); margin-top: 14px; }

/* =============================================================
   8. Responsive
   ============================================================= */
@media (max-width: 960px) {
  .pro-grid { grid-template-columns: 1fr 1fr; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { max-width: 320px; order: -1; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .level-strip { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .main-nav { position: absolute; top: 68px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border); max-height: 0; overflow: hidden; transition: max-height .25s ease; }
  .main-nav.is-open { max-height: 380px; }
  .main-nav ul { flex-direction: column; gap: 0; padding: 8px 20px 16px; }
  .main-nav a { display: block; padding: 12px 0; border-bottom: 1px solid var(--border); }
}
@media (max-width: 640px) {
  .section { padding: 46px 0; }
  .grid-3, .grid-2, .plan-grid, .pro-grid, .steps3 { grid-template-columns: minmax(0, 1fr); }
  .main-nav a.nav-pro { display: inline-block; margin-top: 8px; }
  .level-strip { grid-template-columns: repeat(2, 1fr); }
  .course ol { columns: 1; }
  .verb-form { grid-template-columns: minmax(0, 1fr); }
  .tool-card { padding: 22px 18px; }
  .band { padding: 28px 22px; }
  .btn-row .btn { width: 100%; }
  .partner-bar { font-size: 0.74rem; }
  .partner-bar .container { padding-top: 6px; padding-bottom: 6px; }
  .page-head { padding: 22px 0 0; }
  .page-head h1 { font-size: 1.7rem; }
  .page-head .lead { font-size: 0.98rem; margin-bottom: 0.4em; }
  .tool-card { margin-top: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .card-link, .progress > i { transition: none; }
}