/* ─────────────────────────────────────────────
   Value Tree — 공통 스타일시트
   디자인: 명함 기반 (딥그린 + 라임 + 화이트)
───────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-deep:     #0A191C;   /* 명함 실측값 */
  --bg-section:  #0E1F23;
  --bg-card:     #152428;
  --bg-card-hi:  #1C2F34;

  --lime:        #8BD41E;
  --lime-bright: #C8F25A;
  --green:       #4A9B2F;
  --green-deep:  #2D6B1F;

  --white:       #FFFFFF;
  --off-white:   #E8F0E8;
  --sub:         #8FA399;
  --sub-dim:     #6B7C72;

  --border:      rgba(139, 212, 30, .18);
  --border-soft: rgba(232, 240, 232, .08);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg-deep);
  color: var(--off-white);
  font-family: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
  min-height: 100vh;
}

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

/* ─── NAV ─────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 5%;
  background: rgba(10, 31, 26, .85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
}
.nav-brand {
  display: flex; align-items: center; gap: .65rem;
  font-family: 'Raleway', 'Inter', sans-serif;
  font-weight: 800;
  font-variant: small-caps;
  letter-spacing: .06em;
  font-size: 1.15rem;
  color: var(--white);
}
.nav-brand img { height: 34px; width: auto; display: block; object-fit: contain; }
.nav-brand .accent { color: var(--lime); margin-left: .2rem; font-weight: 400; letter-spacing: .15em; font-size: .7rem; }

.nav-links {
  display: flex; gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-size: .88rem; color: var(--sub); letter-spacing: .04em;
  transition: color .2s;
  position: relative;
}
.nav-links a:hover,
.nav-links a.active { color: var(--lime); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -.4rem;
  height: 2px; background: var(--lime); border-radius: 2px;
}

/* mobile menu button */
.nav-toggle {
  display: none;
  background: none; border: 1px solid var(--border);
  color: var(--off-white); padding: .4rem .7rem;
  border-radius: .4rem; cursor: pointer; font-size: .8rem;
}

@media (max-width: 720px) {
  .nav-links {
    position: absolute; top: 100%; right: 5%;
    flex-direction: column; gap: 1rem;
    background: var(--bg-section);
    border: 1px solid var(--border-soft);
    border-radius: .8rem;
    padding: 1.2rem 1.6rem;
    display: none;
    box-shadow: 0 12px 40px rgba(0,0,0,.4);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: inline-block; }
}

/* ─── HERO ────────────────────────────────── */
.hero {
  min-height: 88vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  padding: 5rem 5% 4rem;
  position: relative; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 70% 55% at 50% 25%, rgba(139,212,30,.10) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(74,155,47,.08) 0%, transparent 65%),
    radial-gradient(ellipse 60% 50% at 85% 75%, rgba(200,242,90,.05) 0%, transparent 65%);
}
.hero-grid {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(139,212,30,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139,212,30,.04) 1px, transparent 1px);
  background-size: 70px 70px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 40%, #000 30%, transparent 75%);
}

.hero-content { position: relative; z-index: 1; max-width: 820px; }

.hero-logo {
  width: 130px; height: auto; margin: 0 auto 1.8rem;
  filter: drop-shadow(0 8px 24px rgba(139,212,30,.18));
}
.hero h1 {
  font-size: clamp(3rem, 9vw, 5.8rem);
  font-weight: 800;
  letter-spacing: .12em;
  line-height: 1;
  color: var(--white);
  margin-bottom: 1.2rem;
}
.hero-sub-kr {
  font-size: clamp(1rem, 2.2vw, 1.3rem);
  color: var(--lime);
  letter-spacing: .15em;
  font-weight: 500;
  margin-bottom: 1.8rem;
}
.hero-tagline {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--off-white);
  font-weight: 300;
  line-height: 1.8;
  max-width: 620px;
  margin: 0 auto;
}
.hero-cta {
  display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
  margin-top: 2.5rem;
}

/* ─── BUTTONS ─────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .85rem 1.8rem; border-radius: 9999px;
  font-size: .95rem; font-weight: 600;
  font-family: inherit; cursor: pointer;
  transition: all .25s;
  border: none;
}
.btn-primary {
  background: #8BD41E;
  color: var(--bg-deep);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(139,212,30,.30);
}
.btn-outline {
  background: rgba(139,212,30,.05);
  color: var(--off-white);
  border: 1px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--lime);
  color: var(--lime);
  transform: translateY(-2px);
}

/* ─── PAGE HEADER (for non-home pages) ────── */
.page-header {
  padding: 5rem 5% 3.5rem;
  text-align: center;
  position: relative;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(139,212,30,.08) 0%, transparent 70%);
  border-bottom: 1px solid var(--border-soft);
}
.page-eyebrow {
  display: inline-block;
  font-size: .75rem; font-weight: 600;
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--lime);
  padding: .35rem .9rem;
  border: 1px solid var(--border);
  border-radius: 9999px;
  margin-bottom: 1.2rem;
}
.page-title {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--white);
  margin-bottom: 1rem;
  line-height: 1.2;
}
.page-lede {
  font-size: clamp(.95rem, 1.6vw, 1.1rem);
  color: var(--sub);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ─── SECTIONS ────────────────────────────── */
.section {
  padding: 5rem 5%;
  max-width: 1200px;
  margin: 0 auto;
}
.section-narrow { max-width: 880px; }

.section-label {
  font-size: .75rem; font-weight: 700;
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--lime);
  margin-bottom: 1rem;
}
.section-title {
  font-size: clamp(1.7rem, 3.2vw, 2.3rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 1.2rem;
  line-height: 1.3;
}
.section-desc {
  color: var(--sub);
  font-size: 1rem;
  line-height: 1.85;
  margin-bottom: 2.5rem;
  max-width: 680px;
}

/* ─── CARDS ───────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.6rem;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: 1.2rem;
  padding: 2rem 1.8rem;
  transition: transform .25s, border-color .25s, box-shadow .25s;
  position: relative;
  overflow: hidden;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--border);
  box-shadow: 0 16px 50px rgba(0,0,0,.35);
}
.card-link { display: block; color: inherit; }

.card-icon {
  width: 52px; height: 52px;
  border-radius: .8rem;
  background: linear-gradient(135deg, rgba(139,212,30,.18), rgba(74,155,47,.08));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.3rem;
  font-size: 1.6rem;
  border: 1px solid var(--border);
}
.card-rank {
  position: absolute; top: 1.2rem; right: 1.5rem;
  font-size: .72rem; font-weight: 700;
  color: var(--lime); letter-spacing: .15em;
  opacity: .55;
}
.card h3 {
  font-size: 1.15rem; font-weight: 700;
  color: var(--white);
  margin-bottom: .6rem;
}
.card p {
  font-size: .9rem; color: var(--sub);
  line-height: 1.7;
}
.card-more {
  display: inline-flex; align-items: center; gap: .35rem;
  margin-top: 1.2rem;
  font-size: .82rem; font-weight: 600;
  color: var(--lime);
  letter-spacing: .04em;
}
.card-more::after {
  content: "→"; transition: transform .25s;
}
.card-link:hover .card-more::after { transform: translateX(4px); }

/* ─── BUSINESS REGISTRATION TABLE ─────────── */
.biz-list {
  display: grid;
  gap: .9rem;
  margin-top: 2rem;
}
.biz-row {
  display: grid;
  grid-template-columns: 1fr 1.5fr auto;
  gap: 1.2rem;
  align-items: center;
  padding: 1.1rem 1.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: .8rem;
  font-size: .92rem;
}
.biz-row .biz-cat {
  color: var(--sub); font-size: .82rem; letter-spacing: .04em;
}
.biz-row .biz-name {
  color: var(--off-white); font-weight: 600;
}
.biz-row .biz-tag {
  font-size: .7rem; font-weight: 700;
  padding: .25rem .7rem; border-radius: 9999px;
  background: rgba(139,212,30,.1);
  color: var(--lime);
  letter-spacing: .08em;
  border: 1px solid var(--border);
}
@media (max-width: 600px) {
  .biz-row { grid-template-columns: 1fr; gap: .4rem; }
  .biz-row .biz-tag { justify-self: start; }
}

/* ─── FEATURE LIST (icon + text) ──────────── */
.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.feature-item {
  display: flex; gap: 1rem;
  padding: 1.4rem;
  border-left: 2px solid var(--lime);
  background: rgba(139,212,30,.03);
  border-radius: 0 .6rem .6rem 0;
}
.feature-item .feat-bullet {
  flex-shrink: 0;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(139,212,30,.15);
  color: var(--lime);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: .85rem;
}
.feature-item h4 {
  color: var(--white); font-size: 1rem; font-weight: 700;
  margin-bottom: .35rem;
}
.feature-item p {
  color: var(--sub); font-size: .88rem; line-height: 1.7;
}

/* ─── CONTACT CARD (명함 모티프) ─────────── */
.namecard {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 1.2rem;
  overflow: hidden;
  max-width: 560px;
  margin: 0 auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.namecard-top {
  padding: 3rem 2rem 2rem;
  text-align: center;
  background:
    radial-gradient(ellipse 80% 60% at 50% 100%, rgba(139,212,30,.08), transparent 70%);
}
.namecard-top img {
  width: 90px; height: auto; margin-bottom: 1.2rem;
  filter: drop-shadow(0 4px 16px rgba(139,212,30,.2));
}
.namecard-top .nc-en {
  font-size: 1.6rem; font-weight: 800;
  color: var(--white); letter-spacing: .15em;
}
.namecard-top .nc-kr {
  font-size: .95rem; color: var(--lime);
  letter-spacing: .15em; margin-top: .4rem;
}
.namecard-bottom {
  padding: 1.8rem 2rem 2.2rem;
  border-top: 1px solid var(--border-soft);
  display: flex; align-items: center; gap: 1rem;
}
.namecard-bar {
  width: 4px; align-self: stretch;
  background: var(--lime);
  border-radius: 2px;
  min-height: 56px;
}
.namecard-bottom .nc-role {
  color: var(--off-white); font-size: 1.05rem;
  letter-spacing: .1em; font-weight: 500;
}
.namecard-bottom .nc-name {
  color: var(--white); font-weight: 700;
  letter-spacing: .25em; margin-left: .4rem;
}
.namecard-bottom .nc-phone {
  color: var(--sub); font-size: .92rem;
  margin-top: .3rem; letter-spacing: .05em;
}

/* ─── CONTACT INFO ROWS ───────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.2rem;
  margin-top: 2.5rem;
}
.contact-item {
  padding: 1.4rem 1.6rem;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: .8rem;
}
.contact-item .ci-label {
  font-size: .72rem; color: var(--lime);
  letter-spacing: .15em; text-transform: uppercase;
  margin-bottom: .5rem; font-weight: 700;
}
.contact-item .ci-value {
  color: var(--off-white); font-size: 1rem;
  word-break: break-all;
}
.contact-item .ci-note {
  display: block; color: var(--sub-dim);
  font-size: .78rem; margin-top: .3rem;
}

/* ─── DIVIDER ─────────────────────────────── */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 0 5%;
}

/* ─── FOOTER ──────────────────────────────── */
.footer {
  border-top: 1px solid var(--border-soft);
  padding: 2.5rem 5% 2rem;
  background: var(--bg-section);
}
.footer-inner {
  max-width: 1200px; margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}
.footer-brand {
  display: flex; align-items: center; gap: .65rem;
  margin-bottom: .8rem;
}
.footer-brand img { width: 24px; height: 30px; }
.footer-brand .fb-text {
  font-weight: 800; letter-spacing: .12em;
  color: var(--white);
}
.footer-brand .fb-kr {
  display: block; color: var(--sub);
  font-size: .78rem; letter-spacing: .1em; font-weight: 400;
  margin-top: .15rem;
}
.footer-col h5 {
  color: var(--lime);
  font-size: .72rem; letter-spacing: .2em;
  text-transform: uppercase;
  margin-bottom: .9rem; font-weight: 700;
}
.footer-col p,
.footer-col a {
  display: block; color: var(--sub);
  font-size: .85rem;
  margin-bottom: .35rem;
  line-height: 1.7;
}
.footer-col a:hover { color: var(--lime); }
.footer-bottom {
  max-width: 1200px; margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-soft);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: .8rem;
  font-size: .76rem; color: var(--sub-dim);
  letter-spacing: .04em;
}

@media (max-width: 720px) {
  .footer-inner { grid-template-columns: 1fr; gap: 1.8rem; }
}

/* ─── REVEAL ANIMATION ────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── UTILITIES ───────────────────────────── */
.center-text { text-align: center; }
.mt-lg { margin-top: 3rem; }
.mb-lg { margin-bottom: 3rem; }