:root {
  --container: 1440px;
  --fs-display: clamp(36px, 3.8vw, 50px);
  --fs-h1: clamp(34px, 3.5vw, 46px);
  --fs-h2: clamp(26px, 2.25vw, 34px);
  --fs-h3: clamp(22px, 1.8vw, 28px);
  --fs-body-lg: 18px;
  --fs-body: 17px;
  --fs-body-sm: 16px;
  --fs-label: 14px;
  --fs-meta: 12px;
  --section-xl: 112px;
  --section-lg: 88px;
  --section-md: 64px;
  --header-height: 104px;
  --bg: #fbfaf8;
  --surface: #ffffff;
  --ink: #151515;
  --muted: #74716d;
  --line: #e6e2dd;
  --line-strong: #d9d4ce;
  --soft: #f4f1ed;
  --orange: #ff6a00;
  --orange-dark: #d95700;
  --orange-soft: #fff3ea;
  --green: #168a54;
  --red: #bf4040;
  --radius: 10px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: -0.022em;
  word-break: keep-all;
}
button, input { font: inherit; }
button { color: inherit; }
a { color: inherit; }
[hidden] { display: none !important; }

.shell {
  width: min(calc(100% - 48px), var(--container));
  margin-inline: auto;
}

.site-header {
  height: var(--header-height);
  background: rgba(251,250,248,.92);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
}
.header-inner {
  height: 100%;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 32px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  width: max-content;
  text-decoration: none;
}
.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  background: var(--orange);
  color: #fff;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 650;
  letter-spacing: -.06em;
}
.brand-copy strong,
.brand-copy small { display: block; }
.brand-copy strong {
  font-size: 15px;
  line-height: 1.1;
  font-weight: 600;
  letter-spacing: .01em;
}
.brand-copy small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.2;
  letter-spacing: .09em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(24px, 3vw, 46px);
}
.main-nav a {
  color: #3a3835;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .055em;
}
.main-nav a:hover { color: var(--orange-dark); }
.header-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 14px;
}
.service-state {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-size: 12px;
}
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #aaa;
}
.status-dot.ready { background: var(--green); }
.status-dot.error { background: var(--red); }
.account-button,
.primary-cta,
.secondary-button,
.google-button {
  min-height: 42px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 510;
  letter-spacing: .04em;
  transition: .16s ease;
}
.account-button {
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
}
.account-button:hover { border-color: var(--ink); }

.hero {
  min-height: 610px;
  padding: 150px 0 118px;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(340px, .65fr);
  gap: clamp(60px, 9vw, 140px);
  align-items: end;
}
.hero-copy-wrap { max-width: 760px; }
.eyebrow {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: var(--fs-label);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: .11em;
}
.hero h1 {
  margin: 0;
  max-width: 720px;
  font-size: var(--fs-display);
  font-weight: 470;
  line-height: 1.12;
  letter-spacing: -.047em;
}
.hero-description {
  max-width: 690px;
  margin: 28px 0 0;
  color: #55514d;
  font-size: var(--fs-body-lg);
  line-height: 1.75;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-top: 38px;
}
.primary-cta {
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid var(--orange);
  background: var(--orange);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}
.primary-cta:hover { background: var(--orange-dark); border-color: var(--orange-dark); }
.text-link {
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .02em;
  border-bottom: 1px solid #bbb4ac;
}
.text-link:hover { color: var(--orange-dark); border-color: var(--orange); }
.hero-guide { padding: 0 0 5px; }
.hero-guide .eyebrow { margin-bottom: 28px; }
.guide-list { border-top: 1px solid var(--line-strong); }
.guide-item {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.guide-item > span {
  color: var(--orange-dark);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
}
.guide-item b {
  display: block;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .08em;
}
.guide-item p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.platform-section {
  padding: var(--section-xl) 0;
  border-top: 1px solid var(--line);
}
.split-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: clamp(48px, 7vw, 120px);
}
.split-label { padding-top: 4px; }
.split-label .eyebrow { margin-bottom: 18px; }
.section-meta {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}
.quiet-button {
  margin-top: 20px;
  padding: 0;
  border: 0;
  border-bottom: 1px solid #a9a29b;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 13px;
}
.quiet-button:hover { color: var(--orange-dark); border-color: var(--orange); }
.section-heading { margin-bottom: 56px; }
.section-heading h2 {
  margin: 0;
  font-size: var(--fs-h2);
  font-weight: 510;
  line-height: 1.3;
  letter-spacing: -.038em;
}
.section-heading > p,
.section-heading > div > p {
  max-width: 650px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: var(--fs-body-sm);
  line-height: 1.7;
}

.dropzone {
  width: 100%;
  min-height: 360px;
  border: 1px dashed #bcb6af;
  border-radius: var(--radius);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: .18s ease;
}
.dropzone:hover,
.dropzone.is-dragging { border-color: var(--orange); background: var(--orange-soft); }
.drop-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 22px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--orange);
  color: #fff;
  font-size: 24px;
  font-weight: 300;
}
.dropzone strong { font-size: 18px; font-weight: 540; }
.dropzone > span:not(.drop-icon) { margin-top: 8px; color: var(--muted); font-size: 16px; }
.dropzone small { margin-top: 26px; color: #918a84; font-size: 14px; }

.empty-state,
.library-empty {
  min-height: 200px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  color: var(--muted);
}
.empty-mark {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--orange-soft);
  color: var(--orange-dark);
  font-size: 14px;
  font-weight: 600;
}
.empty-state strong { color: var(--ink); font-size: 17px; font-weight: 510; }
.empty-state p { margin: 6px 0 0; font-size: 16px; }

.result-list { display: grid; gap: 18px; }
.result-card {
  display: grid;
  grid-template-columns: minmax(220px, 28%) minmax(0, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
}
.preview-wrap {
  min-height: 260px;
  background: #f1efeb;
  border-right: 1px solid var(--line);
  display: grid;
  place-items: center;
  overflow: hidden;
}
.preview-wrap img { width: 100%; height: 100%; object-fit: contain; }
.card-body { padding: 28px 30px; }
.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 20px;
}
.card-index { margin: 0 0 8px; color: var(--muted); font-size: 12px; font-weight: 600; letter-spacing: .1em; }
.card-title { margin: 0; font-size: 22px; font-weight: 540; line-height: 1.35; letter-spacing: -.03em; }
.card-meta { margin: 7px 0 0; color: var(--muted); font-size: 14px; }
.card-actions-top { display: flex; align-items: center; gap: 8px; }
.save-button,
.remove-button,
.copy-button {
  height: 38px;
  padding: 0 13px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
}
.save-button:not(:disabled):hover,
.copy-button:hover { border-color: var(--orange); color: var(--orange-dark); background: var(--orange-soft); }
.save-button:disabled { opacity: .45; cursor: default; }
.remove-button { color: var(--muted); }
.remove-button:hover { color: var(--ink); border-color: #aaa39b; }
.progress { height: 2px; margin-bottom: 12px; overflow: hidden; background: var(--soft); }
.progress > i { display: block; width: 0; height: 100%; background: var(--orange); transition: width .18s ease; }
.card-status { margin: 0 0 18px; color: var(--muted); font-size: 14px; }
.result-card[data-state="done"] .card-status { color: var(--green); }
.result-card[data-state="error"] .card-status { color: var(--red); }
.code-grid { display: grid; gap: 10px; }
.code-row { display: grid; grid-template-columns: 90px minmax(0, 1fr) 64px; gap: 10px; align-items: center; }
.code-label { color: var(--muted); font-size: 13px; font-weight: 600; letter-spacing: .04em; }
.code-input {
  width: 100%; height: 40px; padding: 0 12px; border: 1px solid var(--line); border-radius: 6px;
  background: #fbfaf8; color: #393632; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px; outline: none;
}
.code-input:focus { border-color: var(--orange); }

.library-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; }
.library-tools { display: flex; gap: 8px; }
.library-tools input {
  width: 240px; height: 42px; padding: 0 13px; border: 1px solid var(--line-strong); border-radius: 6px;
  background: #fff; font-size: 14px; outline: none;
}
.library-tools input:focus { border-color: var(--orange); }
.secondary-button { padding: 0 17px; border: 1px solid var(--line-strong); background: #fff; }
.secondary-button:hover { border-color: var(--ink); }
.library-locked {
  min-height: 280px;
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 50px;
}
.library-locked h3 { max-width: 680px; margin: 0; font-size: var(--fs-h3); font-weight: 540; line-height: 1.35; letter-spacing: -.03em; }
.library-locked p:not(.eyebrow) { max-width: 620px; margin: 16px 0 0; color: var(--muted); font-size: 16px; }
.library-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.library-card { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden; }
.library-thumb { aspect-ratio: 16 / 9; background: #f2efeb; overflow: hidden; }
.library-thumb img { width: 100%; height: 100%; object-fit: contain; }
.library-body { padding: 24px; }
.library-meta { color: var(--muted); font-size: var(--fs-meta); letter-spacing: .06em; }
.library-title { margin: 8px 0 18px; font-size: 22px; font-weight: 540; line-height: 1.35; letter-spacing: -.03em; }
.library-code-row { display: flex; gap: 8px; margin-top: 8px; }
.library-code-row button { flex: 1; }
.library-card-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); }
.delete-library-button { padding: 0; border: 0; background: transparent; color: var(--muted); cursor: pointer; font-size: 13px; }
.delete-library-button:hover { color: var(--red); }

.account-section { padding-bottom: 130px; }
.account-panel {
  padding: 36px 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.account-panel h2 { margin: 0; font-size: var(--fs-h2); font-weight: 510; letter-spacing: -.038em; }
.account-panel p { max-width: 760px; margin: 16px 0 0; color: var(--muted); font-size: 16px; }

.site-footer { border-top: 1px solid var(--line); }
.footer-inner { min-height: 96px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--muted); font-size: 13px; }
.footer-inner > div { display: flex; align-items: center; gap: 14px; }
.footer-inner strong { color: var(--ink); font-size: 14px; letter-spacing: .05em; }

.auth-dialog {
  width: min(520px, calc(100% - 32px));
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  box-shadow: 0 24px 80px rgba(30,24,19,.14);
}
.auth-dialog::backdrop { background: rgba(20,18,16,.36); backdrop-filter: blur(2px); }
.dialog-close-row { height: 52px; display: flex; justify-content: flex-end; align-items: center; padding: 0 18px; border-bottom: 1px solid var(--line); }
.dialog-close { width: 34px; height: 34px; border: 0; background: transparent; cursor: pointer; font-size: 26px; font-weight: 300; }
.auth-dialog-content { padding: 36px 38px 40px; }
.auth-dialog-content .eyebrow { margin-bottom: 18px; }
.auth-dialog-content h2 { margin: 0; font-size: 30px; font-weight: 510; line-height: 1.3; letter-spacing: -.038em; }
.auth-description { margin: 16px 0 28px; color: var(--muted); font-size: 16px; line-height: 1.7; }
.google-button { width: 100%; border: 1px solid var(--line-strong); background: #fff; }
.google-button:hover { border-color: var(--ink); }
.auth-divider { position: relative; margin: 26px 0; text-align: center; color: var(--muted); font-size: 13px; }
.auth-divider::before { content: ''; position: absolute; left: 0; right: 0; top: 50%; border-top: 1px solid var(--line); }
.auth-divider span { position: relative; padding: 0 12px; background: #fff; }
.auth-field { display: block; margin-top: 16px; }
.auth-field span { display: block; margin-bottom: 8px; font-size: 14px; font-weight: 500; }
.auth-field input { width: 100%; height: 46px; padding: 0 13px; border: 1px solid var(--line-strong); border-radius: 6px; outline: none; font-size: 16px; }
.auth-field input:focus { border-color: var(--orange); }
.auth-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 24px; }
.auth-buttons .primary-cta { width: 100%; }
.auth-message { min-height: 22px; margin: 16px 0 0; color: var(--red); font-size: 13px; }

@media (max-width: 980px) {
  .header-inner { grid-template-columns: 1fr auto; }
  .main-nav { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; gap: 70px; padding: 110px 0 96px; }
  .hero-guide { max-width: 680px; }
  .split-layout { grid-template-columns: 160px minmax(0, 1fr); gap: 50px; }
  .result-card { grid-template-columns: 220px minmax(0, 1fr); }
  .library-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  :root {
    --fs-display: clamp(32px, 9.5vw, 40px);
    --fs-h1: clamp(30px, 9vw, 38px);
    --fs-h2: clamp(24px, 7.5vw, 30px);
    --fs-body: 16px;
    --fs-body-lg: 17px;
    --fs-body-sm: 16px;
    --section-xl: 80px;
    --header-height: 80px;
  }
  .shell { width: min(calc(100% - 32px), var(--container)); }
  .header-actions .service-state { display: none; }
  .brand-copy small { display: none; }
  .brand-mark { width: 36px; height: 36px; }
  .account-button { min-height: 38px; padding: 0 13px; }
  .hero { padding: 82px 0 80px; gap: 58px; }
  .hero-description { margin-top: 24px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 18px; margin-top: 34px; }
  .guide-item { grid-template-columns: 42px 1fr; }
  .split-layout { grid-template-columns: 1fr; gap: 34px; }
  .split-label { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
  .split-label .eyebrow { margin-bottom: 0; }
  .section-heading { margin-bottom: 38px; }
  .dropzone { min-height: 290px; padding: 30px 18px; }
  .result-card { grid-template-columns: 1fr; }
  .preview-wrap { aspect-ratio: 16 / 9; min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .card-body { padding: 22px 20px; }
  .card-top { flex-direction: column; gap: 18px; }
  .card-actions-top { width: 100%; }
  .card-actions-top button { flex: 1; }
  .code-row { grid-template-columns: 1fr 60px; }
  .code-label { grid-column: 1 / -1; }
  .library-heading { align-items: flex-start; flex-direction: column; }
  .library-tools { width: 100%; }
  .library-tools input { flex: 1; min-width: 0; width: auto; }
  .library-locked { min-height: 340px; padding: 28px 24px; align-items: flex-start; flex-direction: column; }
  .account-panel { align-items: flex-start; flex-direction: column; }
  .footer-inner { padding: 26px 0; align-items: flex-start; flex-direction: column; }
  .footer-inner > div { align-items: flex-start; flex-direction: column; gap: 3px; }
  .auth-dialog-content { padding: 30px 24px 32px; }
}