:root {
  color-scheme: light;
  --color-bg: #ffffff;
  --color-text: #111827;
  --color-muted: #667085;
  --color-line: #dfe3e8;
  --color-soft: #f6f8fb;
  --color-primary: #155eef;
  --color-primary-soft: #edf4ff;
  --color-success: #087443;
  --color-success-soft: #eaf8f1;
  --color-warning: #a15c00;
  --color-warning-soft: #fff4db;
  --color-danger: #b42318;
  --color-danger-soft: #fff0ee;
  --shadow: 0 16px 48px rgba(16, 24, 40, 0.08);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family:
    Pretendard, "Noto Sans KR", Inter, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  line-height: 1.65;
  word-break: keep-all;
}

button,
textarea,
input {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--color-primary);
}

:focus-visible {
  outline: 3px solid rgba(21, 94, 239, 0.25);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--color-text);
  color: white;
}

.skip-link:focus {
  top: 16px;
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--color-line);
  background: rgba(255, 255, 255, 0.96);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-en {
  color: var(--color-muted);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: #344054;
  font-size: 0.92rem;
  font-weight: 650;
}

.site-nav a[aria-current="page"] {
  color: var(--color-primary);
}

.hero {
  padding: 72px 0 38px;
}

.hero-copy {
  max-width: 760px;
}

.hero h1,
.page-hero h1 {
  margin: 0;
  font-size: clamp(2.35rem, 5vw, 4.5rem);
  line-height: 1.08;
  letter-spacing: -0.065em;
}

.hero p,
.page-hero p {
  max-width: 680px;
  margin: 22px 0 0;
  color: var(--color-muted);
  font-size: 1.08rem;
}

.calculator {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(330px, 0.75fr);
  gap: 24px;
  padding-bottom: 80px;
}

.editor-panel,
.results-panel {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: white;
  box-shadow: var(--shadow);
}

.editor-panel {
  padding: 24px;
}

.control-row,
.editor-actions,
.result-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.control-group {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.control-label {
  display: block;
  margin-bottom: 9px;
  color: var(--color-muted);
  font-size: 0.78rem;
  font-weight: 750;
}

.segmented-control {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  border-radius: 12px;
  background: var(--color-soft);
}

.segmented-control input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  opacity: 0;
}

.segmented-control label {
  min-width: 64px;
  padding: 8px 12px;
  border-radius: 8px;
  color: #475467;
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 700;
  text-align: center;
}

.segmented-control input:checked + label {
  background: white;
  color: var(--color-primary);
  box-shadow: 0 1px 4px rgba(16, 24, 40, 0.12);
}

.segmented-control input:focus-visible + label {
  outline: 3px solid rgba(21, 94, 239, 0.25);
  outline-offset: 2px;
}

.script-label {
  display: block;
  margin: 24px 0 10px;
  font-size: 0.95rem;
  font-weight: 750;
}

.script-input {
  width: 100%;
  min-height: 390px;
  resize: vertical;
  padding: 20px;
  border: 1px solid #c9d0da;
  border-radius: var(--radius-md);
  color: var(--color-text);
  line-height: 1.8;
}

.script-input::placeholder {
  color: #98a2b3;
}

.script-input:focus {
  border-color: var(--color-primary);
  outline: 3px solid rgba(21, 94, 239, 0.12);
}

.editor-actions {
  margin-top: 14px;
}

.privacy-note {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.8rem;
}

.button-row {
  display: flex;
  gap: 8px;
}

.button {
  padding: 9px 14px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: white;
  color: #344054;
  cursor: pointer;
  font-size: 0.84rem;
  font-weight: 750;
}

.button:hover {
  border-color: #b2c5ed;
  color: var(--color-primary);
}

.results-panel {
  overflow: hidden;
}

.duration-card {
  padding: 28px;
  background: var(--color-primary);
  color: white;
}

.duration-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.82rem;
  font-weight: 700;
}

.duration-value {
  display: block;
  margin-top: 6px;
  font-size: clamp(2.6rem, 5vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.055em;
}

.result-meta {
  justify-content: flex-start;
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.82rem;
}

.result-section {
  padding: 24px 28px;
  border-top: 1px solid var(--color-line);
}

.result-section h2 {
  margin: 0 0 14px;
  font-size: 0.98rem;
  letter-spacing: -0.02em;
}

.fit-list,
.warning-list,
.plain-list,
.check-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.fit-list {
  display: grid;
  gap: 8px;
}

.fit-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 13px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.fit-row--fit {
  background: var(--color-success-soft);
  color: var(--color-success);
}

.fit-row--close {
  background: var(--color-warning-soft);
  color: var(--color-warning);
}

.fit-row--over {
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

.fit-time {
  font-size: 0.9rem;
  font-weight: 800;
}

.empty-message,
.warning-summary {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.84rem;
}

.warning-summary {
  color: var(--color-danger);
  font-weight: 700;
}

.warning-list {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.warning-list li {
  padding-left: 14px;
  border-left: 2px solid #fda29b;
  color: #475467;
  font-size: 0.78rem;
}

.guide-band {
  padding: 84px 0;
  background: var(--color-soft);
}

.section-heading {
  max-width: 660px;
  margin-bottom: 34px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3.5vw, 2.7rem);
  line-height: 1.2;
  letter-spacing: -0.045em;
}

.section-heading p {
  margin: 12px 0 0;
  color: var(--color-muted);
}

.check-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 64px;
}

.check-block h3 {
  margin: 0 0 18px;
  font-size: 1.1rem;
}

.check-list {
  display: grid;
  gap: 12px;
}

.check-list label {
  display: flex;
  gap: 11px;
  align-items: flex-start;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-line);
  cursor: pointer;
  font-size: 0.93rem;
}

.check-list input {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  accent-color: var(--color-primary);
}

.method-section {
  padding: 84px 0;
}

.method-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 70px;
  align-items: start;
}

.method-grid h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3.5vw, 2.7rem);
  letter-spacing: -0.045em;
}

.plain-list {
  display: grid;
  gap: 22px;
}

.plain-list li {
  padding-bottom: 22px;
  border-bottom: 1px solid var(--color-line);
}

.plain-list strong {
  display: block;
  margin-bottom: 5px;
}

.plain-list span {
  color: var(--color-muted);
  font-size: 0.92rem;
}

.page-hero {
  padding: 76px 0 46px;
  border-bottom: 1px solid var(--color-line);
}

.page-hero h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
}

.content-page {
  max-width: 820px;
  padding: 62px 0 90px;
}

.content-page h2 {
  margin: 48px 0 12px;
  font-size: 1.45rem;
  letter-spacing: -0.035em;
}

.content-page h2:first-child {
  margin-top: 0;
}

.content-page p,
.content-page li {
  color: #475467;
}

.content-page a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.faq-list {
  display: grid;
  gap: 0;
}

.faq-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--color-line);
}

.faq-item h2 {
  margin: 0 0 8px;
  font-size: 1.08rem;
}

.faq-item p {
  margin: 0;
}

.notice {
  padding: 18px 20px;
  border-left: 4px solid var(--color-warning);
  background: var(--color-warning-soft);
  color: #6f4300;
}

.site-footer {
  padding: 38px 0;
  border-top: 1px solid var(--color-line);
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 30px;
}

.footer-copy {
  margin: 8px 0 0;
  color: var(--color-muted);
  font-size: 0.8rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: #475467;
  font-size: 0.82rem;
}

@media (max-width: 900px) {
  .site-nav {
    gap: 14px;
    font-size: 0.82rem;
  }

  .calculator,
  .method-grid {
    grid-template-columns: 1fr;
  }

  .results-panel {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }

  .duration-card {
    grid-row: span 2;
  }

  .result-section {
    border-left: 1px solid var(--color-line);
  }
}

@media (max-width: 680px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .header-inner {
    min-height: auto;
    padding: 18px 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero,
  .page-hero {
    padding-top: 48px;
  }

  .hero h1,
  .page-hero h1 {
    letter-spacing: -0.05em;
  }

  .calculator {
    padding-bottom: 56px;
  }

  .editor-panel {
    padding: 18px;
  }

  .control-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .script-input {
    min-height: 320px;
  }

  .editor-actions,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .results-panel {
    display: block;
  }

  .result-section {
    border-left: 0;
  }

  .check-columns {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .guide-band,
  .method-section {
    padding: 64px 0;
  }
}