/* === Tokens === */
:root {
  --color-primary: #0D9488;
  --color-secondary: #14B8A6;
  --color-accent: #F97316;
  --color-neutral-dark: #134E4A;
  --color-neutral-light: #F0FDFA;
  --color-text: #0F2E2B;
  --color-muted: #547471;
  --color-border: rgba(19, 78, 74, 0.12);
  --font-heading: 'Nanum Myeongjo', serif;
  --font-body: 'Noto Sans KR', sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --radius-lg: 20px;
  --radius-md: 14px;
  --shadow-sm: 0 2px 20px rgba(15, 46, 43, 0.06);
  --shadow-md: 0 10px 30px -12px rgba(15, 46, 43, 0.18);
  --shadow-lg: 0 30px 60px -30px rgba(15, 46, 43, 0.35);
}

/* === Reset & base === */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: #ffffff;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--color-neutral-dark); }
h1, h2, h3, h4 { font-family: var(--font-heading); color: var(--color-neutral-dark); line-height: 1.25; margin: 0 0 .75rem; font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.25rem, 5vw, 4rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, 3.4vw, 2.5rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1rem; }
.container { width: 100%; max-width: 1160px; margin-inline: auto; padding-inline: 1.25rem; }
.narrow { max-width: 780px; }
.body-lg { font-size: 1.0625rem; line-height: 1.8; color: #244744; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.8rem; font-weight: 600; color: var(--color-primary); margin: 0 0 .75rem; font-family: var(--font-body); }
.center { text-align: center; }

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.85rem 1.5rem; border-radius: 999px; font-weight: 600;
  font-family: var(--font-body); font-size: 0.98rem;
  cursor: pointer; border: 1px solid transparent;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
  text-decoration: none;
}
.btn:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 2px; }
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-neutral-dark));
  color: #fff;
  box-shadow: 0 12px 30px -12px rgba(13, 148, 136, 0.5);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -14px rgba(13, 148, 136, 0.6); color:#fff; }
.btn-ghost { background: transparent; color: var(--color-neutral-dark); border-color: var(--color-border); }
.btn-ghost:hover { background: var(--color-neutral-light); border-color: var(--color-primary); color: var(--color-neutral-dark); transform: translateY(-2px); }
.btn-accent { background: var(--color-accent); color: #fff; box-shadow: 0 12px 30px -12px rgba(249, 115, 22, 0.55); }
.btn-accent:hover { transform: translateY(-2px); color:#fff; box-shadow: 0 16px 36px -14px rgba(249, 115, 22, 0.65); }

/* === Header (glass nav) === */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(240, 253, 250, 0.72);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid rgba(19, 78, 74, 0.08);
  transition: background .25s var(--ease), box-shadow .25s var(--ease);
}
.site-header.scrolled { background: rgba(240, 253, 250, 0.92); box-shadow: 0 6px 24px -18px rgba(15, 46, 43, 0.4); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding-block: 0.75rem; gap: 1rem; }
.logo { display: inline-flex; align-items: center; }
.logo img { height: 72px; width: auto; display: block; }
.nav-toggle { background: none; border: none; padding: .5rem; color: var(--color-neutral-dark); cursor: pointer; border-radius: 8px; }
.nav-toggle:hover { background: rgba(19,78,74,.06); }
.primary-nav { display: none; flex-direction: column; gap: 0.25rem; }
.primary-nav.is-open { display: flex; position: absolute; top: 100%; left: 0; right: 0; background: #fff; padding: 1rem 1.25rem 1.25rem; border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-md); }
.primary-nav a { color: var(--color-neutral-dark); font-weight: 500; padding: .65rem 0; position: relative; }
.primary-nav a.is-active { color: var(--color-primary); }
.primary-nav .nav-cta { color: #fff; background: var(--color-primary); padding: .55rem 1.15rem; border-radius: 999px; align-self: flex-start; margin-top: .5rem; }
.primary-nav .nav-cta:hover { background: var(--color-neutral-dark); }

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .primary-nav { display: flex; flex-direction: row; align-items: center; gap: 2rem; position: static; padding: 0; background: transparent; box-shadow: none; border: 0; }
  .primary-nav a { padding: 0; }
  .primary-nav a::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 2px;
    background: var(--color-primary); transform: scaleX(0); transform-origin: left;
    transition: transform .25s var(--ease);
  }
  .primary-nav a:hover::after, .primary-nav a.is-active::after { transform: scaleX(1); }
  .primary-nav .nav-cta { margin-top: 0; align-self: auto; }
  .primary-nav .nav-cta::after { display: none; }
  .logo img { height: 96px; }
}

/* === Hero spotlight === */
.hero-spotlight { position: relative; overflow: hidden; padding-block: 4rem 2rem; background: linear-gradient(180deg, var(--color-neutral-light) 0%, #ffffff 100%); }
.hero-spotlight.compact { padding-block: 3rem 1rem; }
.hero-glow {
  position: absolute; inset: -20% -10% auto -10%; height: 70%;
  background: radial-gradient(50% 60% at 50% 30%, rgba(249, 115, 22, 0.14), transparent 70%),
              radial-gradient(60% 60% at 20% 20%, rgba(20, 184, 166, 0.22), transparent 70%);
  filter: blur(20px);
  pointer-events: none;
  z-index: 0;
}
.hero-inner { position: relative; z-index: 1; text-align: center; max-width: 780px; margin-inline: auto; }
.hero-inner h1 { margin-bottom: 1.25rem; letter-spacing: -0.02em; }
.lede { font-size: 1.15rem; color: #244744; max-width: 60ch; margin-inline: auto; margin-bottom: 1.75rem; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: center; }
.hero-visual { margin-top: 2.5rem; position: relative; z-index: 1; }
.hero-visual img {
  width: 100%; max-height: 520px; object-fit: cover; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.proof-strip {
  display: flex; flex-wrap: wrap; gap: 1rem 2rem; justify-content: center;
  margin-top: 2.5rem; padding-block: 1rem; color: var(--color-muted); font-size: 0.9rem;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

/* === Sections === */
.section { padding-block: 4rem; }
.section-tinted { background: var(--color-neutral-light); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 2.5rem; }
.section-head p { color: var(--color-muted); }

/* === Grids === */
.grid-3, .grid-4 { display: grid; grid-template-columns: 1fr; gap: 1.25rem; }
@media (min-width: 700px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1000px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* === Cards === */
.card {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md);
  padding: 1.75rem; box-shadow: var(--shadow-sm);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(13, 148, 136, 0.4); }
.card-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: linear-gradient(135deg, rgba(20,184,166,.15), rgba(13,148,136,.25));
  color: var(--color-primary);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 1rem;
}
.card h3 { margin-bottom: .5rem; }
.card p { color: #33544f; margin: 0; font-size: 0.97rem; }

/* === Quote === */
.quote {
  background: linear-gradient(135deg, #ffffff, var(--color-neutral-light));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem; margin: 0;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.quote-mark { color: var(--color-primary); opacity: .55; margin-bottom: .75rem; }
.quote p { font-family: var(--font-heading); font-size: 1.2rem; line-height: 1.7; color: var(--color-neutral-dark); margin-bottom: 1rem; }
.quote cite { color: var(--color-muted); font-style: normal; font-size: 0.92rem; }

/* === CTA band === */
.cta-band {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary), var(--color-neutral-dark));
  color: #fff; padding-block: 3.5rem;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(60% 100% at 80% 50%, rgba(249, 115, 22, 0.28), transparent 70%);
  pointer-events: none;
}
.cta-inner { position: relative; display: flex; flex-direction: column; gap: 1.5rem; align-items: flex-start; }
.cta-inner h2 { color: #fff; margin-bottom: .5rem; }
.cta-inner p { color: rgba(255,255,255,.85); margin: 0; }
@media (min-width: 800px) {
  .cta-inner { flex-direction: row; align-items: center; justify-content: space-between; }
}

/* === Split === */
.split-grid { display: grid; grid-template-columns: 1fr; gap: 2.5rem; align-items: center; }
.split-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); aspect-ratio: 4/3; object-fit: cover; }
@media (min-width: 900px) {
  .split-grid { grid-template-columns: 1fr 1fr; gap: 4rem; }
}

/* === Steps === */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr; gap: 1rem; counter-reset: step; }
.step {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md);
  padding: 1.75rem; box-shadow: var(--shadow-sm); position: relative;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.step-num {
  font-family: var(--font-heading); font-weight: 800;
  font-size: 2rem; color: var(--color-accent); display: block; margin-bottom: .5rem;
}
.step h3 { margin-bottom: .5rem; }
.step p { margin: 0; color: #33544f; font-size: 0.97rem; }
@media (min-width: 800px) {
  .steps { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
}
@media (min-width: 1100px) {
  .steps { grid-template-columns: repeat(4, 1fr); }
}

/* === FAQ === */
.faq details {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md);
  padding: 1rem 1.25rem; margin-bottom: .75rem; box-shadow: var(--shadow-sm);
  transition: border-color .2s var(--ease);
}
.faq details[open] { border-color: rgba(13, 148, 136, 0.4); }
.faq summary {
  font-family: var(--font-heading); font-weight: 700; color: var(--color-neutral-dark);
  cursor: pointer; list-style: none; padding: .35rem 0;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--color-primary); font-size: 1.5rem; font-weight: 400; transition: transform .2s var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: .75rem 0 .25rem; color: #33544f; font-size: 0.97rem; line-height: 1.75; }

/* === Contact form === */
.contact-form {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: 2rem; box-shadow: var(--shadow-sm);
  display: grid; gap: 1.1rem;
}
.field { display: flex; flex-direction: column; gap: .4rem; }
.field label { font-weight: 600; color: var(--color-neutral-dark); font-size: 0.95rem; }
.field input, .field select, .field textarea {
  font: inherit; padding: .8rem 1rem; border-radius: 10px;
  border: 1px solid var(--color-border); background: #fff; color: var(--color-text);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.18);
}
.form-consent { display: flex; gap: .6rem; align-items: flex-start; font-size: 0.9rem; color: #33544f; line-height: 1.5; flex-wrap: wrap; }
.form-consent input { margin-top: .25rem; }
.contact-form .btn { justify-self: start; }

.contact-card {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: 2rem; box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; gap: 1rem; align-items: flex-start;
}
.contact-card p { margin: 0; line-height: 1.8; }

/* === Success check === */
.success-check {
  width: 88px; height: 88px; border-radius: 50%;
  background: linear-gradient(135deg, rgba(13,148,136,.15), rgba(20,184,166,.3));
  color: var(--color-primary);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 1.25rem;
}

/* === Footer === */
.site-footer { background: var(--color-neutral-dark); color: rgba(255,255,255,.82); padding-top: 3rem; margin-top: 2rem; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 2rem; padding-bottom: 2rem; }
.site-footer h4 { color: #fff; font-family: var(--font-body); font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 1rem; }
.site-footer .logo img { height: 64px; filter: brightness(0) invert(1); }
.footer-tag { margin-top: .75rem; color: rgba(255,255,255,.7); }
.footer-nav { display: flex; flex-direction: column; gap: .5rem; }
.footer-nav a { color: rgba(255,255,255,.82); }
.footer-nav a:hover { color: #fff; }
.footer-contact p { margin-bottom: .5rem; }
.footer-contact a { color: rgba(255,255,255,.82); }
.footer-contact a:hover { color: #fff; }
.footer-legal { margin-top: 1rem; font-size: 0.88rem; }
.footer-legal a { color: rgba(255,255,255,.72); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding-block: 1.25rem; text-align: center; font-size: 0.85rem; color: rgba(255,255,255,.55); }
.footer-bottom p { margin: 0; }
@media (min-width: 800px) {
  .footer-grid { grid-template-columns: 1.2fr 1fr 1.4fr; gap: 3rem; padding-block: 3rem 2rem; }
}

/* === Reveal motion === */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); will-change: opacity, transform; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* === 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);
  padding: 1.25rem 1.5rem; border-radius: var(--radius-md);
  box-shadow: 0 20px 50px -20px rgba(0,0,0,0.5);
  max-width: 640px; margin-inline: auto;
  font-size: 0.92rem;
}
.cookie-banner.is-visible { display: block; }
.cookie-banner p { margin: 0 0 1rem; line-height: 1.55; }
.cookie-banner__actions { display: flex; flex-wrap: wrap; gap: .5rem; }
.cookie-banner__actions button {
  font: inherit; padding: .6rem 1.1rem; border-radius: 999px; cursor: pointer;
  border: 1px solid rgba(240,253,250,.25); background: transparent; color: var(--color-neutral-light);
  transition: background .2s var(--ease), color .2s var(--ease);
}
.cookie-banner__actions button:hover { background: rgba(240,253,250,.1); }
.cookie-banner__actions [data-cookie-accept] {
  background: var(--color-accent); border-color: var(--color-accent); color: #fff; font-weight: 600;
}
.cookie-banner__actions [data-cookie-accept]:hover { background: #ea6a13; border-color: #ea6a13; }
.cookie-banner__prefs { display: grid; gap: .5rem; margin-top: 1rem; padding-top: 1rem; border-top: 1px solid rgba(240,253,250,.15); }
.cookie-banner__prefs label { display: flex; gap: .5rem; align-items: center; font-size: 0.92rem; }
.cookie-banner__prefs [data-cookie-save] {
  font: inherit; margin-top: .5rem; padding: .55rem 1rem; border-radius: 999px;
  background: var(--color-primary); color: #fff; border: none; cursor: pointer; justify-self: start;
}
.cookie-banner__prefs [data-cookie-save]:hover { background: var(--color-secondary); }