@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@500&family=Noto+Sans+KR:wght@400;500;600;700;800&display=swap');

:root {
  --ink: #172019;
  --muted: #68716a;
  --paper: #f3f2ec;
  --card: #fffef9;
  --line: #d8ddd4;
  --green: #176448;
  --green-dark: #112c21;
  --lime: #c9f36c;
  --blue: #2f80ed;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Noto Sans KR", sans-serif; }
a { color: inherit; }

.guide-header {
  height: 64px;
  padding: 0 max(24px, calc((100vw - 1100px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,254,249,.96);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
}
.guide-brand { font-size: 20px; font-weight: 800; letter-spacing: -.06em; text-decoration: none; }
.guide-header nav { display: flex; align-items: center; gap: 22px; }
.guide-header nav a { color: var(--muted); font-size: 12px; font-weight: 700; text-decoration: none; }
.guide-header nav a:hover, .guide-header nav a.active { color: var(--green); }
.guide-header nav a.kakao-link { padding: 8px 11px; color: #241f00; background: #fee500; border: 1px solid #ebd500; border-radius: 999px; font-size: 10px; line-height: 1; white-space: nowrap; }
.guide-header nav a.kakao-link:hover { color: #241f00; background: #f5dc00; }

main { width: min(1100px, calc(100% - 48px)); margin: 0 auto; }
.guide-hero {
  min-height: 510px;
  padding: 90px 8% 80px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    linear-gradient(120deg, rgba(17,44,33,.98), rgba(23,100,72,.91)),
    repeating-linear-gradient(35deg, transparent 0 42px, rgba(201,243,108,.08) 42px 44px);
}
.guide-hero::after {
  content: "";
  width: 420px;
  height: 420px;
  position: absolute;
  right: -100px;
  bottom: -160px;
  border: 2px solid rgba(201,243,108,.42);
  border-radius: 47% 53% 42% 58%;
  transform: rotate(23deg);
}
.eyebrow, .section-title > span, .notice-section span {
  color: var(--green);
  font: 500 11px/1 "IBM Plex Mono", monospace;
  letter-spacing: .12em;
}
.guide-hero .eyebrow { color: var(--lime); }
.guide-hero h1 { max-width: 900px; margin: 20px 0 18px; font-size: clamp(38px, 5vw, 58px); line-height: 1.14; letter-spacing: -.055em; word-break: keep-all; overflow-wrap: normal; }
.hero-title-line { white-space: nowrap; }
.guide-hero > p:not(.eyebrow) { max-width: 650px; margin: 0; color: rgba(255,255,255,.7); font-size: 16px; line-height: 1.85; word-break: keep-all; overflow-wrap: break-word; }
.guide-cta {
  width: fit-content;
  margin-top: 34px;
  padding: 15px 18px;
  display: flex;
  align-items: center;
  gap: 35px;
  color: var(--green-dark);
  background: var(--lime);
  border-radius: 4px;
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
}
.seo-hero {
  background:
    linear-gradient(120deg, rgba(14,39,48,.98), rgba(23,100,72,.92)),
    repeating-linear-gradient(35deg, transparent 0 42px, rgba(201,243,108,.08) 42px 44px);
}

.guide-section { padding: 86px 0; border-bottom: 1px solid var(--line); }
.section-title { margin-bottom: 34px; }
.section-title h2, .notice-section h2 { margin: 13px 0 0; font-size: clamp(27px, 4vw, 42px); line-height: 1.25; letter-spacing: -.045em; }
.step-grid { margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); list-style: none; border: 1px solid var(--line); }
.step-grid li { min-height: 230px; padding: 28px; background: var(--card); border-right: 1px solid var(--line); }
.step-grid li:last-child { border-right: 0; }
.step-grid b { color: var(--green); font: 500 11px/1 "IBM Plex Mono", monospace; }
.step-grid h3 { margin: 46px 0 10px; font-size: 20px; }
.step-grid p, .feature-list p, .notice-section p, details p { color: var(--muted); font-size: 13px; line-height: 1.75; }
.prose-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.prose-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.split-section { display: grid; grid-template-columns: .75fr 1.25fr; gap: 60px; }
.feature-list { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); }
.feature-list article { padding: 26px 22px 28px 0; border-bottom: 1px solid var(--line); }
.feature-list article:nth-child(even) { padding-left: 22px; border-left: 1px solid var(--line); }
.feature-list h3 { margin: 0 0 8px; font-size: 15px; }
.feature-list p { margin: 0; font-size: 12px; }

.notice-section {
  padding: 54px 60px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  color: #fff;
  background: var(--green-dark);
  border-bottom: 0;
}
.notice-section span { color: var(--lime); }
.notice-section h2 { font-size: 30px; }
.notice-section p { margin: 0; color: rgba(255,255,255,.67); }
.use-case-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
}
.use-case-grid article {
  min-height: 180px;
  padding: 28px 24px;
  background: var(--card);
  border-right: 1px solid var(--line);
}
.use-case-grid article:last-child { border-right: 0; }
.use-case-grid b { font-size: 16px; }
.use-case-grid p {
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.75;
}

.faq-section details { padding: 22px 0; border-top: 1px solid var(--line); }
.faq-section details:last-child { border-bottom: 1px solid var(--line); }
.faq-section summary { cursor: pointer; font-size: 15px; font-weight: 700; }
.faq-section details p { margin: 14px 0 0; }

footer {
  min-height: 120px;
  padding: 38px max(24px, calc((100vw - 1100px) / 2));
  display: flex;
  align-items: center;
  gap: 18px;
  color: rgba(255,255,255,.7);
  background: #0b1c14;
  font-size: 12px;
}
footer strong { color: #fff; font-size: 18px; }
footer nav { margin-left: auto; display: flex; gap: 18px; }
footer a { color: var(--lime); font-weight: 700; }

.privacy-document {
  width: min(100% - 48px, 920px);
  margin: 0 auto;
  padding: 86px 0 100px;
}
.privacy-title { padding-bottom: 52px; border-bottom: 2px solid var(--ink); }
.privacy-title h1 { margin: 13px 0 16px; font-size: clamp(38px, 6vw, 68px); letter-spacing: -.045em; }
.privacy-title p { max-width: 720px; margin: 0; color: var(--muted); font-size: 16px; line-height: 1.75; }
.privacy-title small { display: block; margin-top: 18px; color: var(--muted); font-size: 11px; }
.privacy-document section { padding: 40px 0; border-bottom: 1px solid var(--line); }
.privacy-document section h2 { margin: 0 0 20px; font-size: 20px; }
.privacy-document section p,
.privacy-document section li { color: var(--muted); font-size: 13px; line-height: 1.9; }
.privacy-document section p { margin: 12px 0 0; }
.privacy-document section ul { margin: 0; padding-left: 20px; }
.policy-table { overflow: hidden; border: 1px solid var(--line); border-radius: 5px; }
.policy-table > div { display: grid; grid-template-columns: 150px 1fr; border-top: 1px solid var(--line); }
.policy-table > div:first-child { border-top: 0; }
.policy-table strong,
.policy-table span { padding: 15px 17px; font-size: 12px; line-height: 1.7; }
.policy-table strong { background: #eef1eb; }
.policy-table span { color: var(--muted); }
.policy-contact { display: inline-flex; min-height: 42px; margin-top: 18px; padding: 0 16px; align-items: center; border-radius: 4px; color: #fff; background: var(--green); font-size: 12px; font-weight: 800; text-decoration: none; }
.policy-help { margin-top: 20px !important; font-size: 11px !important; }

@media (max-width: 760px) {
  .guide-header { padding: 0 18px; }
  .guide-header nav a:first-child { display: none; }
  main { width: min(100% - 28px, 1100px); }
  .guide-hero { min-height: 450px; padding: 70px 24px; }
  .guide-hero h1 { font-size: clamp(34px, 10vw, 52px); }
  .hero-title-line { white-space: normal; }
  .guide-hero > p:not(.eyebrow) { font-size: 14px; }
  .guide-section { padding: 62px 0; }
  .step-grid, .split-section, .notice-section, .prose-grid, .use-case-grid { grid-template-columns: 1fr; }
  .step-grid li { min-height: 185px; border-right: 0; border-bottom: 1px solid var(--line); }
  .step-grid li:last-child { border-bottom: 0; }
  .step-grid h3 { margin-top: 28px; }
  .split-section, .notice-section { gap: 28px; }
  .feature-list { grid-template-columns: 1fr; }
  .feature-list article:nth-child(even) { padding-left: 0; border-left: 0; }
  .notice-section { padding: 42px 28px; }
  .prose-grid { gap: 22px; }
  .use-case-grid article {
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .use-case-grid article:last-child { border-bottom: 0; }
  .use-case-grid p { margin-top: 12px; }
  footer { padding: 34px 18px; flex-wrap: wrap; }
  .privacy-document { width: min(100% - 28px, 920px); padding: 54px 0 72px; }
  .privacy-title { padding-bottom: 38px; }
  .policy-table > div { grid-template-columns: 1fr; }
  .policy-table strong { padding-bottom: 7px; }
  .policy-table span { padding-top: 4px; }
}