:root {
  color-scheme: light;
  --ink: #2b211c;
  --dark: #1e1713;
  --brand: #5b3a2e;
  --point: #963f30;
  --grain: #e3c38e;
  --surface: #fffdf8;
  --paper: #f5efe5;
  --line: rgb(91 58 46 / 20%);
  --muted: #786b62;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Pretendard, "Noto Sans KR", Arial, sans-serif;
  line-height: 1.6;
}
a { color: inherit; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 20; padding: 10px 14px; color: white; background: var(--dark); transform: translateY(-160%); }
.skip-link:focus { transform: none; }

.plan-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  min-height: 60px;
  padding: 0 max(24px, calc((100vw - 1320px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--surface);
  background: rgb(30 23 19 / 96%);
  backdrop-filter: blur(12px);
}
.plan-topbar a { font-weight: 700; text-decoration: none; }
.plan-topbar span { color: #cdbfae; font-size: 12px; letter-spacing: .12em; }

.plan-shell {
  width: min(1320px, calc(100% - 48px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr);
  gap: 64px;
}
.plan-index { padding: 54px 0 90px; }
.plan-index > div { margin-bottom: 28px; }
.plan-index span, .plan-hero > span, .plan-card__group, .plan-card__grid span { color: var(--point); font-size: 11px; font-weight: 800; letter-spacing: .12em; }
.plan-index strong { display: block; margin: 6px 0 8px; font-size: 25px; }
.plan-index p { margin: 0; color: var(--muted); font-size: 14px; }
.plan-index nav { position: sticky; top: 92px; max-height: calc(100vh - 120px); overflow: auto; padding-right: 10px; }
.plan-index h2 { margin: 24px 0 8px; color: var(--muted); font-size: 12px; letter-spacing: .1em; }
.plan-index ul { margin: 0; padding: 0; list-style: none; }
.plan-index li + li { border-top: 1px solid var(--line); }
.plan-index a { padding: 8px 0; display: grid; grid-template-columns: 64px 1fr; gap: 8px; color: var(--muted); font-size: 13px; text-decoration: none; }
.plan-index a:hover, .plan-index a:focus-visible { color: var(--point); }

.plan-main { min-width: 0; padding-bottom: 120px; }
.plan-hero { padding: 92px 0 84px; }
.plan-hero h1 { max-width: 720px; margin: 16px 0 24px; font-family: Georgia, "Times New Roman", serif; font-size: clamp(52px, 7vw, 88px); font-weight: 500; line-height: 1.02; letter-spacing: -.045em; }
.plan-hero > p { max-width: 680px; margin: 0; color: var(--muted); font-size: 18px; }
.plan-hero dl { margin: 44px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); }
.plan-hero dl div { padding: 20px 18px; border-right: 1px solid var(--line); }
.plan-hero dl div:last-child { border-right: 0; }
.plan-hero dt { color: var(--muted); font-size: 12px; }
.plan-hero dd { margin: 5px 0 0; font-size: 21px; font-weight: 800; }

.plan-list { display: grid; gap: 26px; }
.plan-card { scroll-margin-top: 86px; padding: 42px; background: var(--surface); border: 1px solid var(--line); box-shadow: 0 18px 50px rgb(43 33 28 / 5%); }
.plan-card > header { display: flex; justify-content: space-between; gap: 20px; }
.plan-card__id { margin-left: 10px; color: var(--muted); }
.plan-card__status { align-self: flex-start; padding: 5px 10px; color: var(--brand); background: #efe3d3; font-size: 12px; }
.plan-card__title { max-width: 760px; margin: 20px 0 10px; font-size: clamp(30px, 4vw, 48px); line-height: 1.15; letter-spacing: -.035em; }
.plan-card__purpose { max-width: 720px; margin: 0; color: var(--muted); font-size: 17px; }
.plan-card__grid { margin-top: 34px; display: grid; grid-template-columns: repeat(2, 1fr); border: 1px solid var(--line); }
.plan-card__grid section { min-height: 150px; padding: 22px; }
.plan-card__grid section:nth-child(odd) { border-right: 1px solid var(--line); }
.plan-card__grid section:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
.plan-card__grid p { margin: 8px 0 0; font-size: 15px; }
.plan-card__back { margin-top: 24px; display: inline-flex; min-height: 44px; align-items: center; color: var(--brand); font-weight: 800; text-decoration: none; }

.plan-card--featured { padding: 0; overflow: hidden; color: var(--surface); background: var(--dark); border: 0; }
.plan-card--featured > header, .plan-card--featured > h2, .plan-card--featured > p { margin-inline: 42px; }
.plan-card--featured > header { padding-top: 42px; }
.plan-card--featured .plan-card__group { color: var(--grain); }
.plan-card--featured .plan-card__id, .plan-card--featured > p { color: #cdbfae; }
.plan-card--featured .plan-card__status { color: var(--dark); background: var(--grain); }
.sales-plan-visual { position: relative; min-height: 720px; margin-top: 36px; overflow: hidden; background: #160f0c; }
.sales-plan-visual::after { position: absolute; inset: 0; content: ""; background: linear-gradient(90deg, rgb(30 23 19 / 88%) 0%, rgb(30 23 19 / 42%) 50%, rgb(30 23 19 / 8%) 100%); }
.sales-plan-visual > img:first-child { width: 100%; height: 720px; display: block; object-fit: cover; opacity: .82; filter: saturate(.86) contrast(.98); }
.sales-plan-visual__copy { position: absolute; top: 54px; left: 42px; z-index: 2; max-width: 540px; }
.sales-plan-visual__copy span { color: var(--grain); font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.sales-plan-visual__copy strong { display: block; margin-top: 10px; font-size: clamp(34px, 5vw, 58px); line-height: 1.08; }
.sales-plan-visual__copy b { display: block; margin-top: 25px; color: #f0d2a8; font-size: clamp(68px, 9vw, 110px); line-height: .88; letter-spacing: -.05em; }
.sales-plan-visual__product { position: absolute; right: 30px; bottom: 10px; z-index: 3; width: min(41%, 360px); filter: drop-shadow(0 24px 34px rgb(0 0 0 / 28%)); }
.sales-plan-proof { margin: 0 42px; padding: 32px 0; display: grid; grid-template-columns: 1.05fr .95fr; gap: 24px; }
.sales-plan-proof h3 { margin: 0 0 14px; color: var(--grain); font-size: 15px; }
.sales-plan-proof ul { margin: 0; padding-left: 18px; color: #d8c9bb; font-size: 14px; }
.sales-plan-proof__assets { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.sales-plan-proof__assets figure { margin: 0; }
.sales-plan-proof__assets img { width: 100%; aspect-ratio: 1; display: block; object-fit: cover; border: 1px solid rgb(247 240 228 / 18%); }
.sales-plan-proof__assets figcaption { margin-top: 6px; color: #cdbfae; font-size: 11px; }
.plan-card--featured .plan-card__grid { margin: 0 42px; border-color: rgb(247 240 228 / 20%); }
.plan-card--featured .plan-card__grid section { border-color: rgb(247 240 228 / 20%); }
.plan-card--featured .plan-card__grid p { color: #d8c9bb; }
.plan-card--featured .plan-card__back { margin: 24px 42px 36px; color: var(--grain); }

.review-plan-board { margin: 34px 0 0; padding: 34px 0; display: grid; gap: 14px; overflow: hidden; background: var(--paper); border-block: 1px solid var(--line); }
.review-plan-board__carousel { min-height: 390px; display: grid; grid-template-columns: 1fr 1.3fr 1fr; align-items: center; gap: 20px; overflow: hidden; }
.review-plan-board__carousel > img { width: 100%; height: 270px; display: block; object-fit: cover; opacity: .65; box-shadow: 8px 10px 20px rgb(43 33 28 / 12%); }
.review-plan-board__carousel > img:first-child { transform: translateX(-28%); }
.review-plan-board__carousel > img:last-child { transform: translateX(28%); }
.review-plan-board__carousel > div { position: relative; z-index: 1; height: 370px; padding: 28px 12px 20px; overflow: hidden; background: #111; border: 4px solid #171717; border-radius: 42px; box-shadow: 14px 18px 30px rgb(43 33 28 / 20%); }
.review-plan-board__carousel > div img { width: 100%; height: 100%; display: block; object-fit: cover; }
.review-plan-board__carousel > div span { position: absolute; right: 12px; bottom: 12px; left: 12px; padding: 8px; color: white; background: rgb(17 17 17 / 68%); font-size: 10px; text-align: center; letter-spacing: .1em; }
.review-plan-board dl { margin: 14px 42px 0; display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid var(--line); }
.review-plan-board dl div { padding: 16px; border-right: 1px solid var(--line); }
.review-plan-board dl div:last-child { border-right: 0; }
.review-plan-board dt { color: var(--muted); font-size: 10px; letter-spacing: .1em; }
.review-plan-board dd { margin: 4px 0 0; font-size: 15px; font-weight: 800; }

.plan-card--promise { color: #fafaf8; background: #2a2a26; border-radius: 46px 46px 0 0; }
.plan-card--promise .plan-card__group { color: var(--grain); }
.plan-card--promise .plan-card__id,
.plan-card--promise .plan-card__purpose { color: #c9c9c2; }
.plan-card--promise .plan-card__status { color: var(--dark); background: var(--grain); }
.promise-plan-board { margin: 38px -42px 0; padding: 54px 42px 60px; display: grid; place-items: center; color: #fafaf8; text-align: center; border-block: 1px solid rgb(250 250 248 / 16%); }
.promise-plan-board img { width: min(520px, 100%); height: auto; object-fit: contain; opacity: .58; }
.promise-plan-board strong { margin-top: 28px; font-size: 38px; }
.promise-plan-board p { margin: 28px 0 0; color: #d4d4ce; font-size: 16px; line-height: 1.8; }
.promise-plan-board a { margin-top: 28px; color: var(--grain); font-size: 13px; font-weight: 800; text-decoration: none; }
.plan-card--promise .plan-card__grid { border-color: rgb(250 250 248 / 18%); }
.plan-card--promise .plan-card__grid section { border-color: rgb(250 250 248 / 18%); }
.plan-card--promise .plan-card__grid p { color: #d4d4ce; }
.plan-card--promise .plan-card__back { color: var(--grain); }

@media (max-width: 900px) {
  .plan-shell { width: min(860px, 100%); grid-template-columns: 1fr; gap: 0; }
  .plan-index { padding: 34px 28px 0; }
  .plan-index nav { position: static; max-height: none; display: flex; gap: 8px; overflow-x: auto; padding: 0 0 12px; }
  .plan-index nav section { flex: 0 0 230px; }
  .plan-main { padding-inline: 28px; }
  .plan-hero { padding-top: 64px; }
}

@media (max-width: 600px) {
  .plan-topbar { padding-inline: 18px; }
  .plan-topbar span { display: none; }
  .plan-main, .plan-index { padding-inline: 18px; }
  .plan-hero h1 { font-size: 48px; }
  .plan-hero dl { grid-template-columns: 1fr; }
  .plan-hero dl div { border-right: 0; border-bottom: 1px solid var(--line); }
  .plan-hero dl div:last-child { border-bottom: 0; }
  .plan-card { padding: 28px 22px; }
  .plan-card__grid { grid-template-columns: 1fr; }
  .plan-card__grid section:nth-child(odd) { border-right: 0; }
  .plan-card__grid section { border-bottom: 1px solid var(--line); }
  .plan-card__grid section:last-child { border-bottom: 0; }
  .plan-card--featured > header, .plan-card--featured > h2, .plan-card--featured > p { margin-inline: 22px; }
  .sales-plan-visual { min-height: 680px; }
  .sales-plan-visual > img:first-child { height: 680px; object-position: 58% center; }
  .sales-plan-visual__copy { top: 34px; left: 22px; right: 22px; }
  .sales-plan-visual__copy b { font-size: 64px; }
  .sales-plan-visual__product { right: 8px; width: 58%; }
  .sales-plan-proof { margin-inline: 22px; grid-template-columns: 1fr; }
  .plan-card--featured .plan-card__grid { margin-inline: 22px; }
  .plan-card--featured .plan-card__back { margin-left: 22px; }
  .review-plan-board__carousel { min-height: 320px; grid-template-columns: .8fr 1.5fr .8fr; gap: 10px; }
  .review-plan-board__carousel > img { height: 210px; }
  .review-plan-board__carousel > div { height: 300px; border-radius: 34px; }
  .review-plan-board dl { margin-inline: 22px; grid-template-columns: repeat(2, 1fr); }
  .review-plan-board dl div:nth-child(2) { border-right: 0; }
  .review-plan-board dl div:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
  .plan-card--promise { border-radius: 34px 34px 0 0; }
  .promise-plan-board { margin-inline: -22px; padding-inline: 22px; }
  .promise-plan-board img { width: 100%; height: auto; }
}