:root {
  --ink: #12141A;
  --navy: #0B1C33;
  --navy-2: #13284A;
  --blue: #1E4D8C;
  --blue-mid: #2A62B0;
  --yellow: #E6B325;
  --yellow-soft: #F4D57A;
  --cream: #F6F3EB;
  --paper: #FFFcf6;
  --line: #E3DCCE;
  --muted: #5C6570;
  --ok: #1F7A4D;
  --bad: #B42318;
  --card: #FFFFFF;
  --shadow: 0 18px 50px rgba(11, 28, 51, .08);
  --radius: 18px;
  --max: 1180px;
  --side: 252px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--cream);
  font-weight: 400;
  line-height: 1.55;
  font-size: 17px;
}
img { max-width: 100%; }
a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 3px; }
h1, h2, h3, h4 {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 .5em;
}
h1 { font-size: clamp(2rem, 4vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }
.muted { color: var(--muted); }
.small { font-size: .92rem; }
.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  border: 0; border-radius: 999px; padding: .85rem 1.35rem;
  font: 500 1rem/1 "Source Sans 3", sans-serif;
  cursor: pointer; text-decoration: none; color: inherit;
  transition: transform .15s ease, background .15s ease, box-shadow .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-navy { background: var(--navy); color: #fff; }
.btn-yellow { background: var(--yellow); color: var(--navy); }
.btn-line { background: transparent; color: var(--navy); box-shadow: inset 0 0 0 1px var(--line); }
.btn-line:hover { box-shadow: inset 0 0 0 1px var(--navy); }
.btn[disabled] { opacity: .5; cursor: not-allowed; transform: none; }
.pill-matricula {
  display: inline-flex; align-items: center;
  border-radius: 999px; padding: .55rem 1.05rem;
  background: #fff; color: var(--navy);
  box-shadow: inset 0 0 0 1.5px var(--yellow);
  font-size: .9rem; font-weight: 500; letter-spacing: .03em;
}
.plan .matricula {
  margin: .2rem 0 0; font-size: .92rem; color: var(--muted); font-weight: 400;
}
.plan.featured .matricula { color: var(--yellow-soft); }

/* landing nav */
.top {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(246,243,235,.86);
  border-bottom: 1px solid transparent;
}
.top-in { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: .7rem; text-decoration: none; color: var(--navy); }
.brand img { width: 36px; height: 36px; border-radius: 8px; }
.brand b { font-family: "Fraunces", serif; font-weight: 500; font-size: 1.15rem; }
.brand span { display: block; font-size: .75rem; color: var(--muted); letter-spacing: .04em; }
.nav { display: flex; gap: 1.25rem; align-items: center; }
.nav a { color: var(--navy); text-decoration: none; font-weight: 500; }
.nav a.btn-navy { color: #fff; }
.hero {
  padding: 72px 0 48px;
  background:
    radial-gradient(900px 420px at 90% -10%, rgba(230,179,37,.28), transparent 60%),
    radial-gradient(700px 380px at -10% 20%, rgba(30,77,140,.16), transparent 55%),
    var(--cream);
}
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.kicker { color: var(--blue); font-weight: 500; letter-spacing: .08em; text-transform: uppercase; font-size: .78rem; }
.hero p.lead { font-size: 1.15rem; color: #3c4450; max-width: 38rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: .75rem; margin: 1.4rem 0 1rem; }
.hero-card {
  background: var(--navy); color: #eef3f8; border-radius: 24px; padding: 26px;
  box-shadow: var(--shadow); min-height: 280px;
}
.hero-card .tag { color: var(--yellow-soft); font-size: .8rem; letter-spacing: .06em; text-transform: uppercase; }
.hero-card h3 { color: #fff; margin-top: .4rem; }
.hero-card p { color: #c5d0dc; }
.alts { display: grid; gap: .45rem; }
.alts span {
  display: block; padding: .55rem .75rem; border-radius: 10px;
  background: rgba(255,255,255,.06); font-size: .95rem;
}
.alts span.ok { background: rgba(230,179,37,.18); color: var(--yellow-soft); }

.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
  margin: -12px 0 64px;
}
.stat {
  background: var(--card); border-radius: 16px; padding: 18px 20px;
  box-shadow: var(--shadow);
}
.stat b { display: block; font-family: "Fraunces", serif; font-size: 1.7rem; font-weight: 500; color: var(--navy); }
.stat span { color: var(--muted); font-size: .9rem; }

section { padding: 28px 0 64px; }
.section-head { max-width: 640px; margin-bottom: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.card {
  background: var(--card); border-radius: var(--radius); padding: 22px;
  box-shadow: 0 1px 0 var(--line);
}
.card h3 { color: var(--navy); }
.mark { width: 36px; height: 4px; background: var(--yellow); border-radius: 4px; margin-bottom: 14px; }

.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; align-items: stretch; }
.plan {
  background: var(--card); border-radius: 22px; padding: 26px 24px;
  box-shadow: var(--shadow); display: flex; flex-direction: column;
  position: relative;
}
.plan.featured { background: var(--navy); color: #e8eef5; transform: translateY(-8px); }
.plan.featured h3, .plan.featured .price { color: #fff; }
.plan.featured li { color: #d5deea; }
.plan .badge {
  position: absolute; top: 16px; right: 16px;
  background: var(--yellow); color: var(--navy); border-radius: 999px;
  font-size: .75rem; font-weight: 500; padding: .25rem .65rem;
}
.price { font-family: "Fraunces", serif; font-size: 2.3rem; font-weight: 500; color: var(--navy); }
.price small { font-size: 1rem; color: var(--muted); font-family: "Source Sans 3", sans-serif; }
.plan.featured .price small { color: #c9d3df; }
.plan ul { padding-left: 1.1rem; margin: 1rem 0 1.4rem; flex: 1; }
.plan li { margin: .4rem 0; }
.fine { font-size: .85rem; color: var(--muted); }

.english-band {
  background: var(--navy); color: #eaf0f6; border-radius: 28px; padding: 36px;
  display: grid; grid-template-columns: 180px 1fr; gap: 32px; align-items: center;
}
.english-band h2, .empty-rank h2 { color: #fff; }
.empty-rank {
  background: var(--navy-2); color: #d7e0ea; border-radius: 24px; padding: 36px;
}

/* Cora avatar */
.cora { width: 168px; height: 210px; margin: 0 auto; position: relative; }
.cora svg { width: 100%; height: 100%; overflow: visible; }
.cora .bob { animation: bob 3.2s ease-in-out infinite; transform-origin: 100px 210px; }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }
.cora .lid { transform-origin: center; animation: blink 4.6s infinite; }
.cora .lid-r { animation-delay: .08s; }
@keyframes blink {
  0%, 42%, 50%, 100% { transform: scaleY(1); }
  46% { transform: scaleY(.08); }
}
.cora.speaking .mouth { animation: talk .28s ease-in-out infinite; transform-origin: 100px 132px; }
@keyframes talk { 50% { transform: scaleY(1.55) translateY(1px); } }
.cora .rings { opacity: 0; }
.cora.speaking .rings { opacity: 1; animation: rings 1.1s ease-out infinite; }
@keyframes rings { from { opacity: .6; } to { opacity: 0; transform: scale(1.15); } }

footer.site {
  border-top: 1px solid var(--line); padding: 36px 0 48px; color: var(--muted); font-size: .92rem;
}
.foot-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 24px; }

/* app shell */
body.app { background: #eef1f4; }
.app-shell { display: grid; grid-template-columns: var(--side) 1fr; min-height: 100vh; }
.side {
  background: var(--navy); color: #d5deea; padding: 22px 16px;
  position: sticky; top: 0; height: 100vh;
  display: flex; flex-direction: column; gap: .35rem;
}
.side a, .side button.navlink {
  color: #d5deea; text-decoration: none; background: none; border: 0;
  text-align: left; width: 100%;
  padding: .62rem .8rem; border-radius: 10px; font: 500 .95rem/1.2 "Source Sans 3", sans-serif;
  cursor: pointer;
}
.side a.active, .side button.navlink.active, .side a:hover, .side button.navlink:hover {
  background: rgba(255,255,255,.08); color: #fff;
}
.side .who { margin-top: auto; padding: .8rem; font-size: .85rem; color: #9aabc0; }
.main { padding: 28px 32px 60px; }
.topbar { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 22px; gap: 12px; }
.panel { background: #fff; border-radius: 18px; padding: 22px; box-shadow: 0 8px 30px rgba(16,20,26,.04); }
.filters { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 16px; }
select, input, textarea {
  font: inherit; border: 1px solid var(--line); border-radius: 10px; padding: .65rem .75rem;
  background: #fff; color: var(--ink);
}
textarea { width: 100%; min-height: 220px; resize: vertical; }
.q-list { display: grid; gap: 10px; }
.q-item {
  display: grid; grid-template-columns: 88px 1fr auto; gap: 12px; align-items: start;
  padding: 12px 0; border-bottom: 1px solid var(--line); cursor: pointer;
}
.q-item:hover h4 { color: var(--blue); }
.pill {
  display: inline-block; background: var(--cream); color: var(--navy);
  border-radius: 999px; padding: .15rem .55rem; font-size: .78rem; font-weight: 500;
}
.choice {
  display: block; width: 100%; text-align: left; margin: .4rem 0; padding: .75rem .9rem;
  border-radius: 12px; border: 1px solid var(--line); background: #fff; cursor: pointer; font: inherit;
}
.choice:hover { border-color: var(--blue-mid); }
.choice.picked { border-color: var(--navy); background: var(--cream); }
.choice.right { border-color: var(--ok); background: #eef8f2; }
.choice.wrong { border-color: var(--bad); background: #fdecea; }
.feedback { margin-top: 12px; padding: 12px 14px; border-radius: 12px; background: var(--cream); }
.bars { display: grid; gap: 10px; }
.bar { background: #e6e1d6; border-radius: 999px; height: 10px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--blue); width: 0; }
.chat { display: flex; flex-direction: column; gap: 10px; max-height: 480px; overflow: auto; }
.bubble { max-width: 80%; padding: .75rem 1rem; border-radius: 14px; }
.bubble.me { align-self: flex-end; background: var(--navy); color: #fff; }
.bubble.ai { align-self: flex-start; background: var(--cream); }
.lock {
  background: var(--cream); border-radius: 16px; padding: 28px; text-align: center;
}
.timer { font-family: "Fraunces", serif; font-size: 1.6rem; color: var(--navy); }
.source { font-size: .82rem; color: var(--muted); margin-top: 10px; }
.hidden { display: none !important; }
.row { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; }

/* english studio */
.studio { display: grid; grid-template-columns: 220px 1fr; gap: 22px; align-items: start; }
.studio-stage {
  background: linear-gradient(180deg, #10233f, #0B1C33); border-radius: 22px; padding: 18px 12px 14px;
  text-align: center; color: #dce6f1;
}
.mic-row { display: flex; justify-content: center; gap: .5rem; margin-top: 8px; }
.corrected { background: #fff8e1; border-left: 3px solid var(--yellow); padding: 10px 12px; border-radius: 8px; }

@media (max-width: 960px) {
  .hero-grid, .grid-3, .plans, .grid-2, .english-band, .studio, .app-shell, .foot-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .plan.featured { transform: none; }
  .side { position: relative; height: auto; flex-direction: row; flex-wrap: wrap; }
  .app-shell { grid-template-columns: 1fr; }
  .main { padding: 18px 16px 48px; }
  .q-item { grid-template-columns: 1fr; }
}