:root {
  --g900: #102A22;
  --g800: #173A2E;
  --g700: #1F4B3B;
  --lime: #C5E384;
  --lime-d: #9FC458;
  --ivory: #F6F5F0;
  --mint: #E8F0EA;
  --line: #DCE3DD;
  --text: #17211D;
  --muted: #5C6B66;
  --ok: #2E9E5B; --warn: #E5A800; --bad: #D93A3A;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--ivory); color: var(--text); font-family: Pretendard, 'Apple SD Gothic Neo', system-ui, sans-serif; font-size: 16px; line-height: 1.65; word-break: keep-all; }
img { max-width: 100%; display: block; }
h1, h2, h3 { margin: 0; line-height: 1.25; letter-spacing: -0.02em; }
p { margin: 0; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.wrap.narrow { max-width: 820px; }
[hidden] { display: none !important; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 24px; border-radius: 999px; font: inherit; font-weight: 800; font-size: 16px; text-decoration: none; border: 1.5px solid transparent; cursor: pointer; transition: transform .15s, background .15s; }
.btn:hover { transform: translateY(-1px); }
.btn-sm { padding: 9px 16px; font-size: 14px; }
.btn-lime { background: var(--lime); color: var(--g900); }
.btn-lime:hover { background: #d3ec9d; }
.btn-dark { background: var(--g800); color: #fff; }
.btn-outline-light { border-color: rgba(255,255,255,.5); color: #fff; }
.btn-outline-light:hover { background: rgba(255,255,255,.08); }
.btns { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.btns.center { justify-content: center; }

/* header */
.hdr { position: sticky; top: 0; z-index: 50; background: rgba(16,42,34,.96); backdrop-filter: blur(8px); color: #fff; }
.hdr-in { height: 64px; display: flex; align-items: center; gap: 24px; }
.logo { color: var(--lime); font-weight: 900; letter-spacing: .04em; text-decoration: none; font-size: 17px; }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { color: rgba(255,255,255,.82); text-decoration: none; font-size: 15px; font-weight: 600; }
.nav a:hover { color: #fff; }
.hdr-right { display: flex; align-items: center; gap: 12px; }
.lang { display: inline-flex; border: 1px solid rgba(255,255,255,.25); border-radius: 999px; padding: 2px; }
.lang button { background: none; border: 0; color: rgba(255,255,255,.7); font: inherit; font-size: 12px; font-weight: 800; padding: 5px 9px; border-radius: 999px; cursor: pointer; }
.lang button[aria-pressed="true"] { background: #fff; color: var(--g900); }

/* hero */
.hero { background: radial-gradient(1200px 500px at 85% 0%, #24563f 0%, transparent 60%), var(--g800); color: #fff; padding: 72px 0 80px; overflow: hidden; }
.hero-in { display: grid; grid-template-columns: 1.35fr .9fr; gap: 56px; align-items: center; }
.eyebrow { font-size: 14px; font-weight: 800; letter-spacing: .08em; color: var(--g700); margin-bottom: 14px; }
.eyebrow.lime { color: var(--lime); }
.hero h1 { font-size: clamp(34px, 5.4vw, 60px); font-weight: 900; }
.hero-sub { margin-top: 20px; font-size: clamp(16px, 1.6vw, 19px); color: rgba(255,255,255,.82); max-width: 600px; }
.badges { list-style: none; padding: 0; margin: 24px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.badges li { border: 1px solid rgba(197,227,132,.45); color: var(--lime); border-radius: 999px; padding: 6px 12px; font-size: 13px; font-weight: 700; }
.hero-note { margin-top: 16px; font-size: 14px; color: rgba(255,255,255,.6); }
.hero-photo { margin: 0; position: relative; justify-self: end; width: min(100%, 380px); }
.hero-photo img { width: 100%; aspect-ratio: 324 / 418; object-fit: cover; border-radius: 24px; box-shadow: 0 30px 60px rgba(0,0,0,.35); }
.hero-photo::before { content: ''; position: absolute; inset: -14px 14px 14px -14px; border: 2px solid var(--lime); border-radius: 26px; z-index: -1; }
.hero-photo { isolation: isolate; }
.hero-photo figcaption { position: absolute; left: 16px; bottom: 16px; background: rgba(16,42,34,.88); border-radius: 12px; padding: 10px 14px; display: grid; }
.hero-photo figcaption b { font-size: 17px; }
.hero-photo figcaption span { font-size: 12px; color: var(--lime); letter-spacing: .05em; }

/* sections */
.sec { padding: 96px 0; }
.sec-mint { background: var(--mint); }
.sec-dark { background: var(--g900); color: #fff; }
.title { font-size: clamp(28px, 3.6vw, 42px); font-weight: 900; color: var(--g900); }
.title.light { color: #fff; }
.lead { margin-top: 14px; font-size: 18px; color: var(--muted); max-width: 680px; }
.lead.light { color: rgba(255,255,255,.78); }
.muted { color: var(--muted); }
.muted-light { color: rgba(255,255,255,.5); }
.small { font-size: 13px; margin-top: 12px; }

.pains { list-style: none; padding: 0; margin: 40px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.pains li { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 24px; display: flex; gap: 14px; align-items: flex-start; }
.pains .pn { font-weight: 900; color: var(--lime-d); font-size: 15px; }
.pains p { font-size: 18px; font-weight: 700; line-height: 1.45; }

.steps { list-style: none; padding: 0; margin: 44px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: s; }
.steps li { background: #fff; border-radius: 18px; padding: 26px 22px; position: relative; }
.steps li:not(:last-child)::after { content: '→'; position: absolute; right: -14px; top: 30px; color: var(--g700); font-weight: 900; z-index: 1; }
.sn { width: 36px; height: 36px; border-radius: 50%; background: var(--g800); color: var(--lime); display: grid; place-items: center; font-weight: 900; margin-bottom: 14px; }
.steps h3 { font-size: 19px; margin-bottom: 6px; color: var(--g900); }
.steps p { color: var(--muted); font-size: 15px; }

/* AI */
.ai-in { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.ticks { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 10px; }
.ticks li { padding-left: 28px; position: relative; color: rgba(255,255,255,.88); }
.ticks li::before { content: ''; position: absolute; left: 0; top: 7px; width: 16px; height: 9px; border-left: 3px solid var(--lime); border-bottom: 3px solid var(--lime); transform: rotate(-45deg); }
.mock { background: #13342A; border: 1px solid rgba(255,255,255,.08); border-radius: 24px; padding: 22px; box-shadow: 0 30px 60px rgba(0,0,0,.3); }
.mock-top { display: flex; gap: 16px; align-items: center; margin-bottom: 16px; }
.mock-ring { width: 76px; height: 76px; position: relative; flex: none; }
.mock-ring b { position: absolute; inset: 0; display: grid; place-items: center; font-size: 24px; }
.mock-top small { color: rgba(255,255,255,.55); }
.mock-prio { font-weight: 800; color: var(--lime); }
.mock-row { background: rgba(255,255,255,.05); border-radius: 12px; padding: 12px 14px; margin-bottom: 8px; display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; position: relative; }
.mock-row.bad { outline: 2px solid var(--bad); }
.mock-row em { font-style: normal; font-size: 11px; font-weight: 800; border-radius: 6px; padding: 2px 7px; color: #fff; }
.b-bad { background: var(--bad); } .b-ok { background: var(--ok); } .b-warn { background: var(--warn); }
.mock-row i { grid-column: 1 / -1; height: 6px; border-radius: 99px; background: linear-gradient(90deg, var(--bad) 0 18%, var(--warn) 18% 32%, var(--ok) 32% 68%, var(--warn) 68% 82%, var(--bad) 82%); position: relative; }
.mock-row i::after { content: ''; position: absolute; left: var(--p); top: -4px; width: 4px; height: 14px; background: #fff; border-radius: 2px; }
.mock-split { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }

/* coach */
.coach-in { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: start; }
.coach-card { background: var(--g800); color: #fff; border-radius: 24px; overflow: hidden; display: grid; grid-template-columns: 160px 1fr; gap: 0; position: sticky; top: 90px; }
.coach-card img { width: 100%; height: 100%; object-fit: cover; }
.coach-card > div { padding: 24px; }
.coach-card .eyebrow { color: var(--lime); }
.coach-name { font-size: 30px; font-weight: 900; }
.coach-en { color: var(--lime); font-weight: 700; letter-spacing: .05em; font-size: 14px; margin-top: 4px; }
.coach-lead { margin-top: 14px; color: rgba(255,255,255,.85); }
.coach-langs { margin-top: 12px; color: var(--lime); font-size: 14px; }
.coach-info h3 { font-size: 20px; color: var(--g900); margin: 28px 0 10px; }
.coach-info h3:first-child { margin-top: 0; }
.tm { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 24px; }
.tm table { width: 100%; border-collapse: collapse; margin-top: 14px; }
.tm th, .tm td { text-align: left; padding: 12px 0; border-top: 1px solid var(--line); font-size: 15px; }
.tm td { text-align: right; color: var(--g700); font-weight: 800; white-space: nowrap; padding-left: 12px; }
.career { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.career li { padding-left: 18px; position: relative; }
.career li::before { content: ''; position: absolute; left: 0; top: 11px; width: 8px; height: 8px; border-radius: 50%; background: var(--lime-d); }
.focus { margin-top: 20px; background: var(--mint); border-radius: 12px; padding: 14px 16px; font-weight: 700; color: var(--g800); }

/* lessons */
.lessons { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 40px; }
.lesson { background: #fff; border-radius: 22px; padding: 28px; display: flex; flex-direction: column; border: 1px solid var(--line); }
.lesson.featured { background: var(--g800); color: #fff; border-color: var(--g800); }
.ltag { align-self: flex-start; font-size: 12px; font-weight: 800; background: var(--mint); color: var(--g700); border-radius: 999px; padding: 4px 10px; }
.featured .ltag { background: var(--lime); color: var(--g900); }
.lesson h3 { font-size: 22px; margin: 14px 0 10px; }
.lesson > p { color: var(--muted); font-size: 15px; }
.featured > p { color: rgba(255,255,255,.78); }
.lesson ul { list-style: none; padding: 0; margin: 18px 0; display: grid; gap: 6px; font-size: 15px; }
.lesson li::before { content: '✓  '; color: var(--lime-d); font-weight: 900; }
.price { margin-top: auto; padding-top: 16px; border-top: 1px solid var(--line); font-weight: 800; font-size: 15px; margin-bottom: 14px; }
.featured .price { border-color: rgba(255,255,255,.15); }

/* reviews */
.revs { display: grid; grid-template-columns: 1fr 1fr 1.3fr; gap: 16px; margin-top: 36px; }
.ph { border: 2px dashed var(--line); border-radius: 20px; padding: 26px; color: var(--muted); min-height: 180px; }
.ph b { color: var(--g800); display: block; margin-bottom: 6px; }
.ba-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 16px; }
.ba-row span { background: var(--mint); border-radius: 12px; aspect-ratio: 3 / 4; display: grid; place-items: center; font-weight: 800; color: var(--g700); font-size: 14px; }

/* faq */
.faq { margin-top: 32px; display: grid; gap: 10px; }
.faq details { background: #fff; border-radius: 16px; padding: 0 22px; border: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: 20px 0; font-weight: 800; font-size: 17px; list-style: none; position: relative; padding-right: 28px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; position: absolute; right: 0; top: 16px; font-size: 22px; color: var(--g700); }
.faq details[open] summary::after { content: '−'; }
.faq details p { padding: 0 0 20px; color: var(--muted); }

/* final */
.final { background: var(--g800); color: #fff; text-align: center; padding: 88px 0; }
.final h2 { font-size: clamp(28px, 4vw, 44px); font-weight: 900; }
.final p { margin-top: 12px; color: rgba(255,255,255,.75); }

/* footer */
.foot { background: var(--g900); color: rgba(255,255,255,.65); padding: 40px 0 120px; font-size: 14px; }
.foot-in { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.foot .logo { margin-bottom: 8px; }
.foot-links { display: grid; gap: 4px; text-align: right; }
.draft { color: var(--lime); }

/* mobile bottom bar */
.mbar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; display: none; gap: 8px; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); background: rgba(246,245,240,.96); backdrop-filter: blur(6px); border-top: 1px solid var(--line); }
.mb { flex: 1; text-align: center; border-radius: 999px; padding: 13px; font: inherit; font-weight: 800; font-size: 15px; text-decoration: none; border: 0; cursor: pointer; }
.mb.wa { background: #1F8F4E; color: #fff; }
.mb.kakao { background: #FEE500; color: #191600; }
.toast { position: fixed; left: 50%; bottom: 90px; transform: translateX(-50%); background: var(--g900); color: #fff; padding: 12px 16px; border-radius: 12px; font-size: 14px; z-index: 70; max-width: calc(100% - 32px); }

@media (max-width: 960px) {
  .nav { display: none; }
  .hdr-right { margin-left: auto; }
  .hero-in, .ai-in, .coach-in { grid-template-columns: 1fr; gap: 36px; }
  .hero-photo { justify-self: start; width: min(70%, 300px); }
  .steps { grid-template-columns: 1fr 1fr; }
  .steps li::after { display: none; }
  .lessons, .revs { grid-template-columns: 1fr; }
  .pains { grid-template-columns: 1fr 1fr; }
  .coach-card { position: static; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .sec { padding: 64px 0; }
  .hero { padding: 48px 0 56px; }
  .hdr-right .btn { display: none; }
  .mbar { display: flex; }
  .pains { grid-template-columns: 1fr; }
  .pains p br, .lesson br { display: none; }
  .steps { grid-template-columns: 1fr; }
  .coach-card { grid-template-columns: 120px 1fr; }
  .coach-card > div { padding: 18px; }
  .coach-name { font-size: 24px; }
  .btns .btn { flex: 1 1 100%; }
  .foot-links { text-align: left; }
}