/* AnimeVocab — editorial dark layout. Newsreader + IBM Plex Sans. */

:root {
  --bg: #121013;
  --bg-2: #18161b;
  --bg-3: #1f1c22;
  --line: rgba(244, 236, 228, 0.1);
  --ink: rgba(244, 236, 228, 0.94);
  --ink-2: rgba(244, 236, 228, 0.68);
  --ink-3: rgba(244, 236, 228, 0.42);
  --accent: #d96c4f;
  --accent-d: #b8553c;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", system-ui, sans-serif;
  --jp: "Noto Sans JP", "Hiragino Sans", sans-serif;
  --wrap: min(1080px, calc(100% - 48px));
  --narrow: min(680px, calc(100% - 48px));
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.skip {
  position: absolute; left: -9999px; top: 0;
}
.skip:focus { left: 16px; top: 16px; z-index: 100; background: var(--accent); color: #fff; padding: 8px 12px; }

.wrap { width: var(--wrap); margin-inline: auto; }
.narrow { width: var(--narrow); margin-inline: auto; }

/* promo bar */
.promo-bar {
  background: linear-gradient(90deg, rgba(217,108,79,.18), rgba(217,108,79,.08));
  border-bottom: 1px solid rgba(217,108,79,.35);
  font-size: 13px;
}
.promo-inner {
  display: flex; align-items: center; justify-content: center; gap: 16px;
  padding: 10px 0; flex-wrap: wrap;
}
.promo-text { font-weight: 600; color: var(--accent); letter-spacing: 0.02em; }
.promo-link { color: var(--ink-2); text-decoration: none; border-bottom: 1px solid var(--line); }
.promo-link:hover { color: var(--ink); }

/* top nav */
.top {
  position: sticky; top: 0; z-index: 20;
  background: rgba(18, 16, 19, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.top-inner {
  display: flex; align-items: center; gap: 24px;
  padding: 14px 0;
}
.logo {
  font-family: var(--jp); font-size: 17px; color: var(--ink);
  text-decoration: none; margin-right: auto;
}
.logo b { color: var(--accent); font-weight: 600; }
.top nav { display: flex; gap: 22px; }
.top nav a {
  color: var(--ink-3); text-decoration: none; font-size: 13.5px;
  transition: color 120ms;
}
.top nav a:hover { color: var(--ink); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  text-decoration: none; border-radius: 7px; font-weight: 600;
  font-size: 14px; padding: 11px 20px; border: 1px solid transparent;
  transition: background 120ms, border-color 120ms, transform 120ms;
}
.btn:hover { transform: translateY(-1px); }
.btn-sm { padding: 8px 14px; font-size: 13px; }
.btn-accent { background: var(--accent-d); color: #fff; }
.btn-accent:hover { background: var(--accent); }
.btn-line { border-color: var(--line); color: var(--ink-2); background: transparent; }
.btn-line:hover { border-color: rgba(244,236,228,.25); color: var(--ink); }

/* hero */
.hero { padding: clamp(56px, 8vw, 96px) 0 clamp(48px, 6vw, 72px); }
.hero-grid {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
.kicker {
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-3); margin-bottom: 18px;
}
.hero h1 {
  font-family: var(--serif); font-size: clamp(36px, 5.2vw, 54px);
  font-weight: 500; line-height: 1.08; letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.lede { color: var(--ink-2); font-size: 17px; max-width: 52ch; }
.lede strong { color: var(--ink); font-weight: 600; }
.hero-promo {
  margin-top: 14px; font-size: 13px; color: var(--accent); font-weight: 500;
}
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.hero-facts {
  list-style: none; display: flex; flex-wrap: wrap; gap: 8px 18px;
  margin-top: 22px; font-size: 12.5px; color: var(--ink-3);
}
.hero-facts li::before { content: "— "; color: var(--line); }

/* card mock */
.hero-card { margin: 0; }
.card-caption {
  font-family: var(--jp); font-size: 14px; color: var(--ink-3);
  margin-bottom: 14px; letter-spacing: 0.03em;
}
.card-ui {
  background: #0f0e11; border: 1px solid rgba(255,255,255,.09);
  border-radius: 10px; padding: 22px 22px 18px;
  box-shadow: 0 40px 80px rgba(0,0,0,.45);
  font-family: var(--jp);
}
.tag {
  display: inline-block; font-family: var(--sans); font-size: 10px;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3);
  border: 1px solid var(--line); border-radius: 4px; padding: 3px 8px;
}
.card-head { display: flex; align-items: baseline; gap: 12px; margin: 14px 0 6px; }
.card-word { font-size: 34px; font-weight: 600; }
.card-listen {
  font-family: var(--sans); font-size: 11px; color: var(--ink-3);
  border: 1px solid var(--line); border-radius: 5px; padding: 2px 9px;
}
.card-reading { color: var(--ink-2); font-size: 15px; }
.card-meaning { margin: 8px 0 14px; font-size: 14px; }
.card-line {
  font-size: 13px; color: var(--ink-2); line-height: 1.55;
  border-left: 2px solid rgba(255,255,255,.12); padding-left: 12px;
}
.card-line-label {
  display: block; font-family: var(--sans); font-size: 9px;
  text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-3);
  margin-bottom: 4px;
}
.card-line em { font-style: normal; color: var(--accent); font-weight: 600; }
.card-actions { display: flex; gap: 8px; margin-top: 16px; }
.act {
  flex: 1; text-align: center; font-family: var(--sans); font-size: 12px;
  padding: 9px 6px; border-radius: 6px; border: 1px solid var(--line);
  color: var(--ink-3);
}
.act-main { background: var(--accent-d); border-color: transparent; color: #fff; }

/* strip */
.strip { border-block: 1px solid var(--line); background: var(--bg-2); }
.strip-inner { padding: 28px 0; text-align: center; color: var(--ink-2); font-family: var(--serif); font-size: 20px; }
.strip strong { color: var(--ink); font-weight: 500; }

/* sections */
section { padding: clamp(64px, 9vw, 100px) 0; }
.section-head { margin-bottom: 40px; max-width: 640px; }
.section-head h2 {
  font-family: var(--serif); font-size: clamp(28px, 4vw, 38px);
  font-weight: 500; line-height: 1.15; margin-bottom: 10px;
}
.section-head p { color: var(--ink-2); }

.flow { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.flow li { padding: 28px 24px; border-right: 1px solid var(--line); background: var(--bg-2); }
.flow li:last-child { border-right: none; }
.step-num {
  font-family: var(--serif); font-size: 13px; color: var(--accent);
  letter-spacing: 0.12em; display: block; margin-bottom: 12px;
}
.flow h3 { font-size: 16px; margin-bottom: 8px; }
.flow p { font-size: 14px; color: var(--ink-2); }

.feat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.feat { background: var(--bg-2); padding: 28px 26px; }
.feat h3 { font-size: 15px; margin-bottom: 8px; }
.feat p { font-size: 14px; color: var(--ink-2); }

.price-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 760px; }
.price-card {
  border: 1px solid var(--line); border-radius: 10px; padding: 28px 26px;
  background: var(--bg-2); display: flex; flex-direction: column;
}
.price-card-pro { border-color: rgba(217,108,79,.4); position: relative; }
.pro-tag {
  position: absolute; top: -11px; left: 22px;
  background: var(--accent-d); color: #fff; font-size: 10px;
  letter-spacing: 0.12em; text-transform: uppercase; padding: 4px 10px; border-radius: 100px;
}
.price-card h3 { font-size: 14px; color: var(--ink-2); font-weight: 500; margin-bottom: 8px; }
.amount-row { margin-bottom: 18px; min-height: 48px; }
.strike { display: block; font-size: 13px; color: var(--ink-3); text-decoration: line-through; margin-bottom: 2px; }
.amount { font-family: var(--serif); font-size: 36px; font-weight: 500; }
.price-card ul { list-style: none; margin-bottom: 22px; flex: 1; }
.price-card li {
  font-size: 14px; color: var(--ink-2); padding: 6px 0 6px 18px; position: relative;
}
.price-card li::before {
  content: ""; position: absolute; left: 0; top: 13px;
  width: 8px; height: 4px; border-left: 1.5px solid var(--accent);
  border-bottom: 1.5px solid var(--accent); transform: rotate(-45deg);
}

.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; padding: 18px 28px 18px 0;
  font-weight: 500; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 4px; top: 14px;
  font-family: var(--serif); font-size: 22px; color: var(--accent);
}
.faq details[open] summary::after { content: "×"; }
.faq p { color: var(--ink-2); font-size: 15px; padding-bottom: 18px; max-width: 60ch; }

.closing { text-align: center; border-top: 1px solid var(--line); }
.closing h2 {
  font-family: var(--serif); font-size: clamp(26px, 4vw, 34px);
  font-weight: 500; margin-bottom: 24px;
}

.foot { border-top: 1px solid var(--line); background: var(--bg-2); }
.foot-inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px; padding: 24px 0; font-size: 13px; color: var(--ink-3);
}
.foot nav { display: flex; gap: 18px; }
.foot a { color: var(--ink-3); text-decoration: none; }
.foot a:hover { color: var(--ink); }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity 550ms ease, transform 550ms ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn:hover { transform: none; }
}

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-card { order: -1; max-width: 420px; }
  .flow { grid-template-columns: 1fr; }
  .flow li { border-right: none; border-bottom: 1px solid var(--line); }
  .flow li:last-child { border-bottom: none; }
  .feat-grid, .price-grid { grid-template-columns: 1fr; }
  .top nav { display: none; }
}

@media (max-width: 520px) {
  :root { --wrap: calc(100% - 32px); --narrow: calc(100% - 32px); }
}