:root {
  --bg: #0c0c0a;
  --surface: #171714;
  --surface-2: #20201c;
  --line: rgba(255,255,255,.11);
  --line-strong: rgba(235,157,110,.42);
  --text: #f4f1eb;
  --soft: #c9c2b8;
  --muted: #948e86;
  --coral: #eb9d6e;
  --coral-dark: #3a2013;
  --gold: #c9a84c;
  --green: #87c9a8;
  --danger: #ff9388;
  --max: 1120px;
  --font: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.7 var(--font); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.pro-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--line); background: rgba(12,12,10,.88); backdrop-filter: blur(16px); }
.pro-header-inner { max-width: var(--max); min-height: 70px; margin: auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.pro-brand { display: flex; align-items: center; gap: 11px; }
.pro-brand img { width: 40px; height: 40px; object-fit: contain; border-radius: 9px; background: white; padding: 4px; }
.pro-brand strong { display: block; line-height: 1.1; }
.pro-brand span { display: block; margin-top: 3px; color: var(--muted); font-size: 11px; }
.pro-nav { display: flex; align-items: center; gap: 18px; color: var(--soft); font-size: 13px; }
.pro-nav a:hover { color: var(--coral); }
.pro-shell { max-width: var(--max); margin: auto; padding: 0 24px; }
.pro-hero { min-height: 720px; display: grid; grid-template-columns: 1.18fr .82fr; gap: 72px; align-items: center; padding: 92px 0 76px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 7px 11px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--coral); background: rgba(235,157,110,.07); font-size: 12px; font-weight: 800; }
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 18px var(--coral); }
.pro-hero h1 { max-width: 720px; margin: 20px 0; font-size: clamp(43px, 6.6vw, 78px); line-height: 1.05; letter-spacing: -.065em; }
.pro-hero h1 em { color: var(--coral); font-style: normal; }
.hero-copy { max-width: 690px; margin: 0; color: var(--soft); font-size: clamp(17px, 2.2vw, 21px); }
.hero-copy strong { color: var(--text); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 32px; }
.primary-button, .secondary-button { min-height: 52px; padding: 0 21px; border-radius: 11px; border: 1px solid transparent; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; font-weight: 850; transition: transform .18s ease, opacity .18s ease, border-color .18s ease; }
.primary-button { background: var(--coral); color: #1b100a; }
.secondary-button { background: transparent; border-color: var(--line); color: var(--soft); }
.primary-button:hover, .secondary-button:hover { transform: translateY(-2px); }
.primary-button:disabled { cursor: wait; opacity: .58; transform: none; }
.hero-note { margin: 13px 0 0; color: var(--muted); font-size: 12px; }
.product-panel { position: relative; padding: 30px; border: 1px solid var(--line-strong); border-radius: 22px; background: linear-gradient(145deg, rgba(235,157,110,.13), rgba(255,255,255,.025)); box-shadow: 0 28px 90px rgba(0,0,0,.28); }
.product-panel::before { content: ""; position: absolute; inset: 15px -15px -15px 15px; z-index: -1; border: 1px solid var(--line); border-radius: 22px; }
.panel-label { color: var(--coral); font-size: 12px; font-weight: 900; letter-spacing: .08em; }
.product-panel h2 { margin: 9px 0 5px; font-size: 28px; line-height: 1.3; letter-spacing: -.035em; }
.panel-price { margin: 18px 0 22px; font-size: 42px; font-weight: 950; letter-spacing: -.04em; }
.panel-price small { color: var(--muted); font-size: 12px; font-weight: 600; }
.panel-list { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; color: var(--soft); font-size: 14px; }
.panel-list li { position: relative; padding-left: 23px; }
.panel-list li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 900; }
.panel-secure { margin-top: 24px; padding-top: 17px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.section { padding: 100px 0; border-top: 1px solid var(--line); }
.section-head { max-width: 760px; margin-bottom: 42px; }
.section-head span { color: var(--coral); font-size: 13px; font-weight: 850; }
.section-head h2 { margin: 6px 0 12px; font-size: clamp(32px, 5vw, 52px); line-height: 1.15; letter-spacing: -.045em; }
.section-head p { margin: 0; color: var(--soft); }
.result-grid, .curriculum-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
.result-card, .lesson-tile { padding: 25px; border: 1px solid var(--line); border-radius: 17px; background: var(--surface); }
.result-number, .lesson-number { color: var(--coral); font-size: 12px; font-weight: 900; }
.result-card h3, .lesson-tile h3 { margin: 19px 0 9px; font-size: 21px; line-height: 1.35; letter-spacing: -.025em; }
.result-card p, .lesson-tile p { margin: 0; color: var(--muted); font-size: 13px; }
.result-file { display: inline-block; margin-top: 22px; padding: 7px 10px; border: 1px solid rgba(135,201,168,.24); border-radius: 7px; background: rgba(135,201,168,.09); color: var(--green); cursor: pointer; font-size: 11px; font-weight: 800; transition: background .18s ease, border-color .18s ease, transform .18s ease; }
.result-file:hover, .result-file:focus-visible { border-color: var(--green); background: rgba(135,201,168,.18); transform: translateY(-1px); }
.curriculum-grid { grid-template-columns: repeat(2, 1fr); }
.lesson-tile { min-height: 190px; }
.lesson-tile strong { display: block; margin-top: 21px; color: var(--soft); font-size: 12px; }
.lesson-action { position: relative; color: inherit; cursor: pointer; transition: transform .18s ease, border-color .18s ease, background .18s ease; }
.lesson-action:hover, .lesson-action:focus-visible { border-color: var(--line-strong); background: var(--surface-2); transform: translateY(-2px); outline: none; }
.lesson-cta { display: block; margin-top: 12px; color: var(--coral); font-size: 12px; font-weight: 850; }
.lesson-action[aria-disabled="true"], .result-file:disabled { cursor: wait; opacity: .58; transform: none; }
.difference { display: grid; grid-template-columns: 1fr 1fr; overflow: hidden; border: 1px solid var(--line); border-radius: 19px; }
.difference > div { padding: 34px; }
.difference > div + div { border-left: 1px solid var(--line); background: rgba(235,157,110,.065); }
.difference h3 { margin: 0 0 18px; font-size: 23px; }
.difference ul { margin: 0; padding-left: 20px; color: var(--soft); }
.difference li + li { margin-top: 9px; }
.price-section { padding-bottom: 120px; }
.price-box { max-width: 850px; margin: auto; padding: 42px; border: 1px solid var(--line-strong); border-radius: 22px; text-align: center; background: linear-gradient(135deg, rgba(235,157,110,.12), rgba(201,168,76,.05)); }
.price-box h2 { margin: 8px 0; font-size: 35px; }
.price-box .price { margin: 18px 0; font-size: 48px; font-weight: 950; }
.price-box p { color: var(--soft); }
.price-box .primary-button { width: min(100%, 420px); margin-top: 12px; }
.policy-links { margin-top: 18px; color: var(--muted); font-size: 12px; }
.policy-links a { text-decoration: underline; }
.status-line { min-height: 23px; margin: 12px 0 0; color: var(--muted); font-size: 13px; }
.status-line.error { color: var(--danger); }
.status-line.success { color: var(--green); }
.pro-footer { border-top: 1px solid var(--line); }
.pro-footer-inner { max-width: var(--max); margin: auto; padding: 28px 24px; display: flex; justify-content: space-between; gap: 20px; color: var(--muted); font-size: 12px; }
dialog { width: min(92vw, 440px); padding: 0; border: 1px solid var(--line); border-radius: 18px; color: var(--text); background: var(--surface); box-shadow: 0 36px 120px rgba(0,0,0,.62); }
dialog::backdrop { background: rgba(0,0,0,.72); backdrop-filter: blur(6px); }
.dialog-head { display: flex; align-items: start; justify-content: space-between; gap: 20px; padding: 22px 23px 16px; border-bottom: 1px solid var(--line); }
.dialog-head h2 { margin: 0; font-size: 21px; }
.dialog-head p { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.dialog-close { width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 9px; background: transparent; color: var(--soft); cursor: pointer; }
.dialog-body { padding: 22px 23px 25px; }
.field { display: grid; gap: 6px; margin-bottom: 14px; }
.field label { color: var(--soft); font-size: 12px; }
.field input { width: 100%; padding: 12px 13px; border: 1px solid var(--line); border-radius: 10px; background: #0f0f0d; color: var(--text); }
.field input:focus { outline: 2px solid rgba(235,157,110,.35); border-color: var(--coral); }
.dialog-actions { display: grid; gap: 10px; margin-top: 18px; }
.dialog-actions .primary-button { width: 100%; }
.dialog-link { color: var(--coral); font-size: 12px; text-align: center; }
.checkout-notice { position: fixed; left: 50%; bottom: 22px; z-index: 30; width: min(92vw, 510px); transform: translateX(-50%); padding: 16px 18px; border: 1px solid var(--line-strong); border-radius: 14px; background: rgba(23,23,20,.96); box-shadow: 0 18px 70px rgba(0,0,0,.44); }
.checkout-notice[hidden] { display: none; }
.checkout-notice strong { display: block; font-size: 14px; }
.checkout-notice p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
.checkout-notice a { color: var(--coral); text-decoration: underline; }
.course-main { min-height: calc(100vh - 135px); padding: 68px 0 100px; }
.course-status { max-width: 650px; margin: 60px auto; padding: 34px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); text-align: center; }
.course-status h1 { margin: 0 0 10px; font-size: 30px; }
.course-status p { color: var(--soft); }
.course-content[hidden], .course-status[hidden] { display: none; }
.course-top { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 35px; }
.course-top h1 { margin: 8px 0 0; font-size: clamp(36px, 6vw, 60px); letter-spacing: -.05em; line-height: 1.08; }
.course-progress { color: var(--muted); font-size: 13px; }
.course-guide { margin-bottom: 22px; padding: 19px 21px; border: 1px solid rgba(135,201,168,.28); border-radius: 14px; background: rgba(135,201,168,.065); }
.course-guide strong { display: block; color: var(--green); font-size: 14px; }
.course-guide p { margin: 4px 0 0; color: var(--soft); font-size: 13px; }
.course-lessons { display: grid; gap: 13px; }
.course-lesson { overflow: hidden; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); }
.lesson-summary { width: 100%; min-height: 88px; display: grid; grid-template-columns: 70px 1fr auto 28px; gap: 18px; align-items: center; padding: 19px 22px; border: 0; color: inherit; background: transparent; text-align: left; cursor: pointer; }
.lesson-summary.is-static { grid-template-columns: 70px 1fr auto; cursor: default; }
.lesson-summary-copy strong, .lesson-summary > div strong { display: block; }
.lesson-summary-copy small, .lesson-summary > div p { display: block; margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.course-lesson .state { color: var(--green); font-size: 12px; font-weight: 800; }
.course-lesson.is-pending .state { color: var(--muted); }
.course-lesson.is-ready { border-color: rgba(135,201,168,.3); }
.course-lesson.is-open { border-color: var(--line-strong); }
.lesson-toggle { color: var(--coral); font-size: 22px; text-align: center; }
.lesson-body { display: none; border-top: 1px solid var(--line); }
.course-lesson.is-open .lesson-body { display: block; }
.course-video-wrap { padding: 22px; background: #050504; }
.course-video { display: block; width: 100%; aspect-ratio: 16 / 9; border: 1px solid var(--line); border-radius: 13px; background: #000; }
.course-video-placeholder { min-height: 390px; display: grid; place-content: center; padding: 40px 24px; background: radial-gradient(circle at 50% 35%, rgba(235,157,110,.13), transparent 45%), #050504; text-align: center; }
.course-video-placeholder span { color: var(--coral); font-size: 12px; font-weight: 900; letter-spacing: .08em; }
.course-video-placeholder strong { display: block; margin-top: 8px; font-size: 25px; }
.course-video-placeholder p { max-width: 450px; margin: 8px auto 0; color: var(--muted); font-size: 13px; }
.practice-materials { padding: 34px 30px 38px; background: var(--surface-2); }
.practice-title-row { display: flex; align-items: start; justify-content: space-between; gap: 24px; }
.practice-kicker { color: var(--coral); font-size: 11px; font-weight: 900; letter-spacing: .08em; }
.practice-title-row h3 { margin: 7px 0 0; font-size: clamp(24px, 4vw, 34px); line-height: 1.25; letter-spacing: -.035em; }
.practice-page-link { flex: 0 0 auto; margin-top: 5px; padding: 9px 12px; border: 1px solid var(--line); border-radius: 9px; color: var(--soft); font-size: 12px; }
.practice-page-link:hover { border-color: var(--coral); color: var(--coral); }
.practice-description { max-width: 820px; margin: 13px 0 0; color: var(--soft); font-size: 14px; }
.practice-outcome { display: flex; align-items: center; gap: 11px; margin-top: 18px; padding: 12px 14px; border: 1px solid rgba(135,201,168,.25); border-radius: 11px; background: rgba(135,201,168,.055); }
.practice-outcome span { color: var(--green); font-size: 11px; font-weight: 900; }
.practice-outcome strong { font-size: 13px; }
.practice-sample, .practice-prompt { margin-top: 22px; border: 1px solid var(--line); border-radius: 13px; background: #11110f; }
.practice-prompt { margin-top: 0; }
.practice-prompt + .practice-prompt { margin-top: 12px; }
.practice-prompt-head { display: flex; align-items: start; justify-content: space-between; gap: 18px; padding: 16px 17px 13px; }
.practice-prompt-head strong { display: block; font-size: 14px; }
.practice-prompt-head p { margin: 3px 0 0; color: var(--muted); font-size: 11px; }
.copy-practice-button { flex: 0 0 auto; min-height: 35px; padding: 0 12px; border: 1px solid var(--line-strong); border-radius: 8px; color: var(--coral); background: rgba(235,157,110,.06); cursor: pointer; font-size: 11px; font-weight: 850; }
.copy-practice-button:hover, .copy-practice-button.is-copied { color: #16100c; background: var(--coral); }
.practice-sample pre, .practice-prompt pre { max-height: 420px; overflow: auto; margin: 0; padding: 17px; border-top: 1px solid var(--line); color: #e7e2d9; font: 13px/1.75 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; white-space: pre-wrap; overflow-wrap: anywhere; }
.practice-section-head { display: flex; align-items: start; gap: 13px; margin: 34px 0 14px; }
.practice-section-head > span { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 50%; color: #15100c; background: var(--coral); font-size: 11px; font-weight: 950; }
.practice-section-head strong { display: block; font-size: 16px; }
.practice-section-head p { margin: 2px 0 0; color: var(--muted); font-size: 11px; }
.course-checklist { display: grid; grid-template-columns: repeat(2, 1fr); gap: 9px; }
.course-check-item { min-height: 58px; display: flex; align-items: center; gap: 11px; padding: 11px 13px; border: 1px solid var(--line); border-radius: 10px; color: var(--soft); background: #11110f; font-size: 12px; cursor: pointer; }
.course-check-item:has(input:checked) { border-color: rgba(135,201,168,.42); color: var(--text); background: rgba(135,201,168,.07); }
.course-check-item input { width: 17px; height: 17px; accent-color: var(--green); }
.practice-downloads { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.practice-download { min-height: 72px; display: flex; flex-direction: column; justify-content: center; align-items: start; padding: 13px 15px; border: 1px solid var(--line); border-radius: 11px; color: var(--text); background: #11110f; }
.practice-download:hover { border-color: var(--coral); }
.practice-download span { font-size: 13px; font-weight: 800; }
.practice-download small { margin-top: 3px; color: var(--muted); font-size: 10px; }
.practice-download.is-disabled { cursor: not-allowed; opacity: .48; }
@media (max-width: 840px) {
  .pro-hero { min-height: auto; grid-template-columns: 1fr; gap: 52px; padding-top: 70px; }
  .result-grid { grid-template-columns: 1fr; }
  .curriculum-grid { grid-template-columns: 1fr; }
  .difference { grid-template-columns: 1fr; }
  .difference > div + div { border-left: 0; border-top: 1px solid var(--line); }
  .course-checklist { grid-template-columns: 1fr; }
  .practice-downloads { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .pro-header-inner { min-height: 62px; padding: 0 16px; }
  .pro-brand span, .pro-nav a:first-child { display: none; }
  .pro-shell { padding: 0 17px; }
  .pro-hero { padding: 54px 0 66px; }
  .pro-hero h1 { font-size: 45px; }
  .hero-actions { display: grid; }
  .primary-button, .secondary-button { width: 100%; }
  .product-panel { padding: 25px 22px; }
  .section { padding: 72px 0; }
  .price-box { padding: 30px 21px; }
  .pro-footer-inner { flex-direction: column; padding: 24px 17px; }
  .course-top { align-items: start; flex-direction: column; }
  .lesson-summary { grid-template-columns: 42px 1fr 22px; gap: 11px; padding: 16px 14px; }
  .lesson-summary.is-static { grid-template-columns: 42px 1fr; }
  .lesson-summary .state { display: none; }
  .practice-materials { padding: 27px 16px 31px; }
  .course-video-wrap { padding: 10px; }
  .course-video-placeholder { min-height: 230px; }
  .practice-title-row { flex-direction: column; gap: 11px; }
  .practice-page-link { width: 100%; text-align: center; }
  .practice-prompt-head { flex-direction: column; }
  .copy-practice-button { width: 100%; }
  .practice-outcome { align-items: start; flex-direction: column; }
}