:root {
  --bg: #F6F4EF;
  --surface: #FFFFFF;
  --surface-2: #EFECE4;
  --text: #1B1F33;
  --muted: #5F6478;
  --line: #E2DED3;
  --navy: #1E2A5A;
  --navy-2: #2C3B78;
  --coral: #FF7A59;
  --coral-ink: #C2482A;
  --mint: #2FBF83;
  --mint-ink: #1B8A5C;
  --mint-soft: #DDF6EA;
  --on-navy: #FFFFFF;
  --shadow: 0 1px 2px rgba(27, 31, 51, .06), 0 12px 32px rgba(27, 31, 51, .08);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12152A;
    --surface: #1B1F3A;
    --surface-2: #242A4A;
    --text: #ECEEF7;
    --muted: #A3A9C4;
    --line: #2E3456;
    --navy: #8FA2F0;
    --navy-2: #A9B7F5;
    --coral-ink: #FF9C82;
    --mint-ink: #6FE0AE;
    --mint-soft: #173A30;
    --on-navy: #12152A;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 32px rgba(0, 0, 0, .3);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 "Nunito", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; }
a { color: var(--navy); }
h1, h2, h3 { line-height: 1.15; margin: 0 0 .6rem; letter-spacing: -.01em; }
h1 { font-size: clamp(2.1rem, 6vw, 3.6rem); font-weight: 900; }
h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); font-weight: 900; }
h3 { font-size: 1.1rem; font-weight: 800; }
p { margin: 0 0 1rem; }
.wrap { max-width: 1140px; margin: 0 auto; padding: 0 16px; }
.wrap.narrow { max-width: 780px; }
.eyebrow { display: inline-block; font-size: .8125rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--coral-ink); margin-bottom: .6rem; }
.lead { font-size: 1.125rem; color: var(--muted); }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 18px; border-radius: 14px; border: 1px solid transparent; font: inherit; font-weight: 800; text-decoration: none; cursor: pointer; white-space: nowrap; }
.btn.lg { min-height: 54px; padding: 14px 24px; font-size: 1.05rem; border-radius: 16px; }
.btn.block { width: 100%; }
.btn.coral { background: var(--coral); color: #fff; }
.btn.coral:hover { filter: brightness(1.05); }
.btn.ghost { color: var(--navy); }
.btn.outline { border-color: var(--line); color: var(--text); background: var(--surface); }
.btn:focus-visible, input:focus, select:focus, textarea:focus { outline: 3px solid color-mix(in srgb, var(--navy) 35%, transparent); outline-offset: 2px; }

/* ---------- üst menü ---------- */
.nav { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 86%, transparent); backdrop-filter: blur(12px); border-bottom: 1px solid transparent; transition: border-color .2s; }
.nav.scrolled { border-bottom-color: var(--line); }
.nav-in { display: flex; align-items: center; gap: 8px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 900; font-size: 1.15rem; margin-right: auto; }
.brand img { border-radius: 9px; }
.links { display: flex; gap: 4px; margin-right: 8px; }
.links a { padding: 8px 12px; border-radius: 10px; text-decoration: none; color: var(--muted); font-weight: 700; }
.links a:hover { color: var(--text); background: var(--surface-2); }
@media (max-width: 860px) { .links { display: none; } }
@media (max-width: 480px) { .hide-sm { display: none; } }

/* ---------- giriş ---------- */
.hero { padding: 40px 0 56px; overflow: hidden; }
.hero-in { display: grid; gap: 40px; align-items: center; grid-template-columns: 1.05fr .95fr; }
@media (max-width: 920px) { .hero-in { grid-template-columns: 1fr; } }
.hero h1 em { font-style: normal; color: var(--coral); }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin: 24px 0 20px; }
.ticks { list-style: none; padding: 0; margin: 0; display: flex; gap: 8px 20px; flex-wrap: wrap; color: var(--muted); font-weight: 700; font-size: .95rem; }
.ticks li::before { content: "✓"; color: var(--mint-ink); font-weight: 900; margin-right: 6px; }

.hero-art { position: relative; min-height: 560px; display: grid; place-items: center; }
.hero-art::before { content: ""; position: absolute; width: 420px; height: 420px; border-radius: 50%; background: radial-gradient(circle, color-mix(in srgb, var(--coral) 28%, transparent), transparent 68%); }
.phone { position: relative; width: min(320px, 86vw); background: var(--surface); border: 1px solid var(--line); border-radius: 32px; padding: 16px; box-shadow: var(--shadow); }
.phone-top { display: flex; align-items: center; gap: 8px; font-size: .8125rem; font-weight: 800; color: var(--muted); padding: 4px 6px 12px; border-bottom: 1px solid var(--line); }
.phone-top .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--mint); }
.chat { display: flex; flex-direction: column; gap: 8px; padding: 14px 2px; }
.msg { max-width: 86%; padding: 9px 13px; border-radius: 16px; font-size: .9rem; line-height: 1.4; }
.msg.tutor { align-self: flex-start; background: var(--surface-2); border-bottom-left-radius: 5px; }
.msg.student { align-self: flex-end; background: #1E2A5A; color: #fff; border-bottom-right-radius: 5px; }
.msg b { color: var(--mint-ink); }
.orb-mini { display: flex; align-items: center; gap: 10px; padding: 10px; border-radius: 16px; background: #1E2A5A; color: #fff; font-weight: 800; font-size: .875rem; }
.orb-mini img { width: 34px; height: 34px; border-radius: 10px; box-shadow: 0 0 0 4px rgba(61, 220, 151, .35); }
.float-card { position: absolute; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 10px 14px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 2px; font-size: .875rem; }
.float-card .k { font-size: .6875rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.float-card.fix { top: 30px; right: 0; }
.float-card .was { text-decoration: line-through; color: var(--coral-ink); }
.float-card .now { font-weight: 800; }
.float-card.score { bottom: 0; left: 0; min-width: 170px; }
.float-card .bars { display: flex; gap: 6px; align-items: flex-end; height: 36px; margin: 4px 0; }
.float-card .bars i { flex: 1; height: calc(var(--v) * 100%); background: var(--mint); border-radius: 4px 4px 0 0; }
.float-card .lvl b { color: var(--mint-ink); }
@media (max-width: 520px) {
  .hero-art { min-height: 0; display: flex; flex-direction: column; align-items: center; gap: 12px; }
  .float-card.fix { display: none; }  /* sohbetteki kalın "people" zaten düzeltmeyi gösteriyor */
  .float-card.score { position: relative; bottom: auto; left: auto; align-self: stretch; flex-direction: row; align-items: center; justify-content: space-between; gap: 12px; }
  .float-card.score .bars { width: 80px; flex: none; margin: 0; }
}

/* ---------- bant ---------- */
.band { background: #1E2A5A; color: #fff; padding: 36px 0; }
.band-in { display: grid; gap: 24px; grid-template-columns: repeat(3, 1fr); }
@media (max-width: 760px) { .band-in { grid-template-columns: 1fr; } }
.band .stat b { display: block; font-size: 1.5rem; font-weight: 900; color: var(--coral); }
.band .stat span { color: rgba(255, 255, 255, .82); }

/* ---------- bölümler ---------- */
.section { padding: 80px 0; }
.section.alt { background: var(--surface-2); }
@media (max-width: 640px) { .section { padding: 56px 0; } }
.head { max-width: 680px; margin-bottom: 36px; }

.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; grid-template-columns: repeat(3, 1fr); }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }
.steps li { background: var(--surface); border: 1px solid var(--line); border-radius: 22px; padding: 24px; }
.steps .num { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: var(--coral); color: #fff; font-weight: 900; margin-bottom: 14px; }
.steps p { color: var(--muted); margin: 0; }

.features { display: grid; gap: 16px; grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1000px) { .features { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .features { grid-template-columns: 1fr; } }
.features article { background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 22px; }
.features p { color: var(--muted); margin: 0; font-size: .95rem; }
.ic { width: 44px; height: 44px; border-radius: 12px; background: var(--mint-soft); display: grid; place-items: center; margin-bottom: 14px; }
.ic svg { width: 22px; height: 22px; fill: none; stroke: var(--mint-ink); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }

.two { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; }
@media (max-width: 860px) { .two { grid-template-columns: 1fr; } }
.side { background: var(--surface); border: 1px solid var(--line); border-radius: 24px; padding: 32px; }
.side.navy { background: #1E2A5A; border-color: #1E2A5A; color: #fff; }
.side.navy .eyebrow { color: var(--coral); }
.side.navy .list li { color: rgba(255, 255, 255, .85); }
.side.navy .list li::before { background: var(--coral); }
.list { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 12px; }
.list li { position: relative; padding-left: 22px; color: var(--muted); }
.list li::before { content: ""; position: absolute; left: 0; top: .6em; width: 9px; height: 9px; border-radius: 3px; background: var(--mint); }
.list b { color: var(--text); }

/* ---------- robot ---------- */
.robot { display: grid; gap: 48px; grid-template-columns: .9fr 1.1fr; align-items: center; }
@media (max-width: 860px) { .robot { grid-template-columns: 1fr; } }
.robot-art { display: grid; place-items: center; gap: 22px; padding: 24px 0; }
.bot { position: relative; width: 220px; height: 180px; background: #fff; border-radius: 52px; box-shadow: var(--shadow), inset 0 -10px 0 #E7E4DC; display: grid; place-items: center; }
.bot .antenna { position: absolute; top: -46px; left: 50%; width: 6px; height: 40px; background: #fff; transform: translateX(-50%); border-radius: 3px; }
.bot .antenna::after { content: ""; position: absolute; top: -16px; left: 50%; transform: translateX(-50%); width: 24px; height: 24px; border-radius: 50%; background: var(--coral); }
.bot .face { width: 160px; height: 104px; background: #1E2A5A; border-radius: 30px; position: relative; display: flex; justify-content: center; gap: 36px; padding-top: 30px; }
.bot .face i { width: 26px; height: 26px; border-radius: 50%; background: #3DDC97; animation: blink 5s infinite; }
.bot .smile { position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); width: 44px; height: 20px; border: 5px solid var(--coral); border-top: 0; border-radius: 0 0 30px 30px; }
.bot .glow { position: absolute; bottom: -18px; left: 50%; transform: translateX(-50%); width: 70%; height: 10px; border-radius: 50%; background: radial-gradient(#3DDC97, transparent 70%); opacity: .7; }
@keyframes blink { 0%, 92%, 100% { transform: scaleY(1); } 95% { transform: scaleY(.1); } }
@media (prefers-reduced-motion: reduce) { .bot .face i { animation: none; } }
.lights { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.lights span { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line); font-weight: 700; font-size: .875rem; }
.lights i { width: 10px; height: 10px; border-radius: 50%; }
.l-blue { background: #4C7BFF; } .l-green { background: #2FBF83; } .l-teal { background: #22C3C3; }

/* ---------- örnek rapor ---------- */
.report { max-width: 720px; background: var(--surface); border: 1px solid var(--line); border-radius: 24px; padding: 24px; box-shadow: var(--shadow); display: grid; gap: 18px; }
.report-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.report-top b { display: block; font-size: 1.15rem; }
.report-top span { color: var(--muted); font-size: .875rem; }
.chip { padding: 4px 12px; border-radius: 999px; background: var(--mint-soft); color: var(--mint-ink); font-weight: 900; }
.scores { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.scores div { text-align: center; padding: 12px 6px; border-radius: 14px; background: var(--surface-2); }
.scores b { display: block; font-size: 1.4rem; font-weight: 900; }
.scores span { font-size: .75rem; color: var(--muted); font-weight: 800; }
.fixes { display: grid; gap: 10px; }
.fix-row { display: grid; gap: 2px; padding: 12px 14px; border-radius: 14px; background: var(--surface-2); }
.fix-row .was { text-decoration: line-through; color: var(--coral-ink); }
.fix-row .now { font-weight: 800; }
.fix-row .why { color: var(--muted); font-size: .875rem; }
.words { display: flex; gap: 8px; flex-wrap: wrap; }
.words span { padding: 6px 12px; border-radius: 12px; border: 1px solid var(--line); font-size: .9rem; color: var(--muted); }
.words b { color: var(--text); margin-right: 4px; }

/* ---------- SSS ---------- */
.faq { display: grid; gap: 10px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 0 18px; }
.faq summary { cursor: pointer; padding: 16px 0; font-weight: 800; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-weight: 900; color: var(--coral-ink); font-size: 1.3rem; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq p { color: var(--muted); }

/* ---------- demo ---------- */
.demo { background: #1E2A5A; color: #fff; }
.demo .eyebrow { color: var(--coral); }
.demo .lead { color: rgba(255, 255, 255, .8); }
.demo-in { display: grid; gap: 40px; grid-template-columns: .9fr 1.1fr; align-items: start; }
@media (max-width: 860px) { .demo-in { grid-template-columns: 1fr; } }
.demo-form { background: var(--surface); color: var(--text); border-radius: 24px; padding: 24px; display: grid; gap: 14px; box-shadow: var(--shadow); }
.grid2 { display: grid; gap: 14px; grid-template-columns: 1fr 1fr; }
@media (max-width: 520px) { .grid2 { grid-template-columns: 1fr; } }
label { display: block; font-weight: 800; font-size: .875rem; margin-bottom: 6px; }
input, select, textarea { width: 100%; min-height: 46px; padding: 10px 12px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); color: var(--text); font: inherit; }
textarea { resize: vertical; }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 600; color: var(--muted); }
.check input { width: 20px; min-height: 20px; height: 20px; margin-top: 2px; flex: none; accent-color: var(--coral); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-msg { margin: 0; font-weight: 800; min-height: 1.5em; }
.form-msg.ok { color: var(--mint-ink); }
.form-msg.err { color: var(--coral-ink); }

/* ---------- alt bilgi ---------- */
.foot { padding: 28px 0 calc(28px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); }
.foot-in { display: flex; align-items: center; gap: 12px 24px; flex-wrap: wrap; color: var(--muted); font-size: .9rem; }
.foot .brand { margin-right: 0; font-size: 1rem; }
.foot a:last-child { margin-left: auto; font-weight: 700; }
@media (max-width: 640px) { .foot a:last-child { margin-left: 0; } }