:root {
  --color-primary: #4F46E5;
  --color-secondary: #818CF8;
  --color-accent: #F97316;
  --color-neutral-dark: #1E1B4B;
  --color-neutral-light: #EEF2FF;
  --font-heading: 'Noto Serif KR', serif;
  --font-body: 'Noto Sans KR', sans-serif;
  --sidebar-w: 240px;
  --radius: 12px;
}

/* === Base === */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  color: var(--color-neutral-dark);
  background: #fdfdff;
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; height: auto; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { font-family: var(--font-heading); font-weight: 600; color: var(--color-neutral-dark); letter-spacing: -0.01em; line-height: 1.25; margin: 0 0 0.75rem; }
h1 { font-size: clamp(2rem, 4.5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); margin-bottom: 1rem; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1rem; }

/* === Logo === */
.logo { display: inline-block; }
.logo img { height: 72px; width: auto; }
@media (min-width: 768px) {
  .logo img { height: 96px; }
}
.logo--footer img { height: 64px; }

/* === Layout: sidebar + main === */
.layout { display: block; }
.sidebar {
  background: var(--color-neutral-light);
  border-bottom: 1px solid rgba(30, 27, 75, 0.08);
  padding: 1rem 1.25rem;
  position: sticky;
  top: 0;
  z-index: 50;
}
.sidebar__brand { display: flex; align-items: center; margin: 0; }
.sidebar__nav { margin-top: 0.5rem; }
.sidebar__nav ul { list-style: none; padding: 0; margin: 0; display: none; flex-direction: column; gap: 0.25rem; }
.sidebar__nav ul.is-open { display: flex; }
.sidebar__nav li a {
  display: block;
  padding: 0.6rem 0.75rem;
  color: var(--color-neutral-dark);
  font-weight: 500;
  border-radius: 8px;
}
.sidebar__nav li a[aria-current="page"] { background: rgba(79, 70, 229, 0.1); color: var(--color-primary); }
.sidebar__nav li a:hover { background: rgba(79, 70, 229, 0.08); text-decoration: none; }
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  border: 1px solid rgba(30, 27, 75, 0.15);
  color: var(--color-neutral-dark);
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
}
.sidebar__foot { display: none; margin: 0; font-size: 0.85rem; color: var(--color-neutral-dark); opacity: 0.6; }

.main { padding: 2rem 1.25rem 3rem; }
.main--article { padding-top: 2rem; }

@media (min-width: 900px) {
  .layout { display: grid; grid-template-columns: var(--sidebar-w) 1fr; min-height: 100vh; }
  .sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    border-right: 1px solid rgba(30, 27, 75, 0.08);
    border-bottom: none;
  }
  .sidebar__nav ul { display: flex !important; }
  .nav-toggle { display: none; }
  .sidebar__foot { display: block; margin-top: auto; }
  .main { padding: 3.5rem 3rem 4rem; }
}

/* === Hero === */
.hero { max-width: 900px; margin: 0 auto 3rem; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  color: var(--color-primary);
  font-weight: 700;
  margin: 0 0 1rem;
}
.lede { font-size: 1.15rem; color: rgba(30, 27, 75, 0.75); max-width: 56ch; margin-bottom: 1.5rem; }
.hero__img { margin: 2rem 0 0; }
.hero__img img { aspect-ratio: 16 / 9; object-fit: cover; border-radius: var(--radius); width: 100%; }

/* === Buttons === */
.btn {
  display: inline-block;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  font-size: 1rem;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); box-shadow: 0 8px 20px -8px rgba(30, 27, 75, 0.3); }
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--accent { background: var(--color-accent); color: #fff; }

/* === Sections === */
.section { max-width: 1080px; margin: 0 auto 4rem; }
.section--narrow { max-width: 720px; }
.section__head { max-width: 640px; margin: 0 auto 2rem; text-align: center; }
.section__head p { color: rgba(30, 27, 75, 0.7); margin: 0; }

/* === Grid + Cards === */
.grid { display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid--2 { grid-template-columns: repeat(2, 1fr); } .grid--3 { grid-template-columns: repeat(2, 1fr); } .grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .grid--3 { grid-template-columns: repeat(3, 1fr); } .grid--4 { grid-template-columns: repeat(4, 1fr); } }
.card {
  background: #fff;
  border: 1px solid rgba(30, 27, 75, 0.08);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.card__icon { color: var(--color-primary); margin-bottom: 0.75rem; }
.card h3 { margin-bottom: 0.5rem; }
.card p { margin: 0; color: rgba(30, 27, 75, 0.78); font-size: 0.97rem; }
.card-link { display: block; color: inherit; }
.card-link:hover { text-decoration: none; transform: translateY(-2px); box-shadow: 0 20px 40px -20px rgba(30, 27, 75, 0.25); }

/* === Quote === */
.section--quote { max-width: 780px; text-align: center; }
.section--quote blockquote { margin: 0; padding: 2rem 1rem; border-top: 1px solid rgba(30, 27, 75, 0.1); border-bottom: 1px solid rgba(30, 27, 75, 0.1); }
.section--quote blockquote p { font-family: var(--font-heading); font-size: 1.25rem; line-height: 1.6; color: var(--color-neutral-dark); }
.section--quote cite { font-style: normal; color: rgba(30, 27, 75, 0.65); font-size: 0.92rem; }

/* === CTA band === */
.cta-band {
  background: var(--color-primary);
  color: #fff;
  padding: 3rem 1.5rem;
  text-align: center;
  border-radius: var(--radius);
  max-width: 1080px;
  margin: 0 auto 4rem;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255, 255, 255, 0.88); margin-bottom: 1.5rem; }

/* === Split === */
.split { display: grid; gap: 2rem; align-items: center; max-width: 1080px; margin: 0 auto 4rem; }
.split__img img { aspect-ratio: 4 / 5; object-fit: cover; border-radius: var(--radius); }
@media (min-width: 768px) {
  .split { grid-template-columns: 1fr 1fr; gap: 3.5rem; }
}

/* === Article detail === */
.article { max-width: 65ch; margin: 0 auto; padding-inline: 0; }
.article__head { margin-bottom: 1rem; }
.article__sub { font-size: 1.2rem; color: rgba(30, 27, 75, 0.7); margin: 0.5rem 0 0; }
.article__hero { margin: 2rem 0; }
.article__hero img { aspect-ratio: 16 / 9; object-fit: cover; border-radius: 8px; }
.article p { font-size: 1.08rem; line-height: 1.8; }
.article__foot { margin: 2.5rem 0 3rem; }
.back-link { display: inline-block; font-weight: 600; color: var(--color-primary); }

/* === Form === */
.contact-form { display: flex; flex-direction: column; gap: 1rem; background: #fff; padding: 1.75rem; border-radius: var(--radius); border: 1px solid rgba(30, 27, 75, 0.08); }
.contact-form label { display: flex; flex-direction: column; font-weight: 500; gap: 0.4rem; font-size: 0.95rem; }
.contact-form input, .contact-form textarea {
  font-family: inherit;
  font-size: 1rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid rgba(30, 27, 75, 0.15);
  border-radius: 8px;
  background: var(--color-neutral-light);
  color: var(--color-neutral-dark);
}
.contact-form input:focus, .contact-form textarea:focus { outline: 2px solid var(--color-primary); outline-offset: 1px; background: #fff; }
.form-consent { flex-direction: row !important; align-items: flex-start; gap: 0.6rem; font-size: 0.88rem; font-weight: 400; color: rgba(30, 27, 75, 0.8); }
.form-consent input { margin-top: 0.25rem; }
.contact-form button[type="submit"] { align-self: flex-start; }

/* === Footer === */
.footer {
  border-top: 1px solid rgba(30, 27, 75, 0.1);
  margin-top: 3rem;
  padding: 3rem 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 1080px;
  margin-left: auto;
  margin-right: auto;
}
.footer h3 { font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.1em; color: rgba(30, 27, 75, 0.6); margin-bottom: 0.75rem; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-bottom: 0.4rem; }
.footer a { color: var(--color-neutral-dark); }
.footer address { font-style: normal; color: rgba(30, 27, 75, 0.78); margin-bottom: 1rem; font-size: 0.94rem; }
.footer__legal { display: flex; flex-wrap: wrap; gap: 0.75rem; font-size: 0.88rem; }
.footer__legal li { margin: 0; }
.footer__copy { grid-column: 1 / -1; text-align: center; font-size: 0.85rem; color: rgba(30, 27, 75, 0.55); border-top: 1px solid rgba(30, 27, 75, 0.06); padding-top: 1.25rem; margin: 0; }
@media (min-width: 768px) {
  .footer { grid-template-columns: repeat(3, 1fr); }
}

/* === Cookie banner === */
.cookie-banner {
  position: fixed;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  display: none;
  z-index: 9999;
  background: var(--color-neutral-dark);
  color: var(--color-neutral-light);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.35);
  max-width: 680px;
  margin-inline: auto;
}
.cookie-banner.is-visible { display: block; }
.cookie-banner p { margin: 0 0 1rem; font-size: 0.95rem; }
.cookie-banner__actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.cookie-banner__actions button {
  font-family: inherit;
  font-size: 0.9rem;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  border: 1px solid rgba(238, 242, 255, 0.25);
  background: transparent;
  color: var(--color-neutral-light);
  cursor: pointer;
}
.cookie-banner__actions button[data-cookie-accept] { background: var(--color-accent); border-color: var(--color-accent); color: #fff; font-weight: 600; }
.cookie-banner__prefs { margin-top: 1rem; display: flex; flex-direction: column; gap: 0.5rem; padding-top: 1rem; border-top: 1px solid rgba(238, 242, 255, 0.15); }
.cookie-banner__prefs label { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; }
.cookie-banner__prefs button {
  align-self: flex-start;
  margin-top: 0.5rem;
  background: var(--color-neutral-light);
  color: var(--color-neutral-dark);
  border: none;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
}