/* =========================================================
   설악온 SEORAK-ON — 통합 허브 홈페이지
   Editorial luxury newspaper style, taste-skill 가이드 적용
   ========================================================= */

:root {
  --so-bg: #fbf8f2;
  --so-surface: #ffffff;
  --so-ink: #17181c;
  --so-muted: #6b6f76;
  --so-navy: #10233f;
  --so-navy-deep: #081527;
  --so-red: #b3202c;
  --so-gold: #a9832f;
  --so-border: #e4ded0;
  --so-border-strong: #17181c;
  --so-serif: "Noto Serif KR", "Nanum Myeongjo", Georgia, serif;
  --so-sans: "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --so-maxw: 1180px;
  --so-ease: cubic-bezier(0.32, 0.72, 0, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--so-bg);
  color: var(--so-ink);
  font-family: var(--so-sans);
  font-size: 16px;
  line-height: 1.75;
  word-break: keep-all;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s var(--so-ease); }
h1, h2, h3 { font-family: var(--so-serif); font-weight: 700; line-height: 1.28; letter-spacing: -0.01em; margin: 0; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.so-container { max-width: var(--so-maxw); margin: 0 auto; padding: 0 28px; }

.so-skip {
  position: absolute; left: -999px; top: 0; background: var(--so-navy); color: #fff;
  padding: 10px 16px; z-index: 200;
}
.so-skip:focus { left: 12px; top: 12px; }

/* ---------- Header ---------- */
.so-header { position: sticky; top: 0; z-index: 100; }
.so-header-top { background: var(--so-navy-deep); color: #b9c3d4; }
.so-header-top-inner {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 0; font-size: .78rem; letter-spacing: .02em; gap: 12px;
}
.so-header-tagline { color: #8b98ac; }

.so-header-main {
  background: rgba(251, 248, 242, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--so-border);
  transition: box-shadow .3s var(--so-ease);
}
.so-header.is-scrolled .so-header-main { box-shadow: 0 8px 24px rgba(16, 35, 63, 0.08); }
.so-header-inner { display: flex; align-items: center; gap: 32px; padding: 16px 28px; }

.so-brand { display: flex; align-items: center; margin-right: auto; }
.so-brand-logo {
  display: block; height: 48px; width: auto;
}

.so-nav { display: flex; align-items: center; gap: 30px; }
.so-nav a { font-size: .94rem; font-weight: 600; color: var(--so-ink); position: relative; padding: 4px 0; }
.so-nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; background: var(--so-red);
  transform: scaleX(0); transform-origin: left; transition: transform .3s var(--so-ease);
}
.so-nav a:hover::after { transform: scaleX(1); }
.so-nav a:hover { color: var(--so-red); }

.so-cta-small {
  border: 1px solid var(--so-border-strong); border-radius: 999px; padding: 9px 20px;
  font-size: .84rem; font-weight: 700; white-space: nowrap;
}
.so-cta-small:hover { background: var(--so-navy); border-color: var(--so-navy); color: #fff; }

.so-menu-toggle {
  display: none; flex-direction: column; gap: 5px; width: 32px; height: 24px;
  background: none; border: 0; cursor: pointer; padding: 0;
}
.so-menu-toggle span { display: block; height: 2px; background: var(--so-ink); border-radius: 2px; transition: transform .3s var(--so-ease), opacity .3s var(--so-ease); }
.so-menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.so-menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.so-menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.so-hero { position: relative; padding: 100px 0 88px; overflow: hidden; }
.so-hero::before {
  content: ""; position: absolute; inset: -20% -10% auto -10%; height: 60%;
  background: radial-gradient(60% 60% at 30% 20%, rgba(169, 131, 47, 0.10), transparent 70%),
              radial-gradient(50% 50% at 80% 10%, rgba(179, 32, 44, 0.06), transparent 70%);
  pointer-events: none;
}
.so-hero-inner { position: relative; max-width: 900px; }
.so-eyebrow {
  display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: .22em; text-transform: uppercase;
  color: var(--so-red); margin-bottom: 22px; padding-bottom: 10px; border-bottom: 2px solid var(--so-red);
}
.so-hero-title { font-size: clamp(2.4rem, 5.6vw, 4.4rem); margin: 0 0 28px; }
.so-hero-title em { font-style: normal; color: var(--so-navy); position: relative; }
.so-hero-sub { font-size: clamp(1.02rem, 1.6vw, 1.18rem); color: #3a3d44; max-width: 640px; margin-bottom: 40px; }
.so-hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.so-btn {
  display: inline-flex; align-items: center; gap: 10px; border-radius: 999px;
  padding: 15px 26px; font-size: .96rem; font-weight: 700; transition: transform .35s var(--so-ease), background .3s var(--so-ease), color .3s var(--so-ease), box-shadow .3s var(--so-ease);
}
.so-btn-primary { background: var(--so-navy); color: #fff; box-shadow: 0 10px 30px rgba(16, 35, 63, 0.22); }
.so-btn-primary:hover { background: var(--so-navy-deep); transform: translateY(-2px); }
.so-btn-ghost { border: 1px solid var(--so-border-strong); color: var(--so-ink); }
.so-btn-ghost:hover { background: var(--so-ink); color: var(--so-bg); transform: translateY(-2px); }
.so-btn-arrow {
  display: grid; place-items: center; width: 26px; height: 26px; border-radius: 999px;
  background: rgba(255,255,255,0.16); transition: transform .35s var(--so-ease);
}
.so-btn-ghost .so-btn-arrow { background: rgba(23,24,28,0.08); }
.so-btn:hover .so-btn-arrow { transform: translateX(3px); }

.so-hero-rule {
  height: 1px; background: linear-gradient(90deg, transparent, var(--so-gold), transparent);
  max-width: var(--so-maxw); margin: 0 auto;
}

/* ---------- Section shared ---------- */
section { padding: 96px 0; }
.so-section-head { max-width: 640px; margin: 0 0 56px; }
.so-kicker { font-size: .76rem; font-weight: 700; letter-spacing: .22em; color: var(--so-gold); margin-bottom: 14px; }
.so-section-head h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); margin-bottom: 14px; }
.so-section-sub { color: var(--so-muted); font-size: 1.02rem; }

/* ---------- Mission pillars ---------- */
.so-mission { background: var(--so-surface); border-top: 1px solid var(--so-border); border-bottom: 1px solid var(--so-border); }
.so-pillars { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--so-border); }
.so-pillar { padding: 44px 28px; border-right: 1px solid var(--so-border); }
.so-pillar:first-child { padding-left: 0; }
.so-pillar:last-child { border-right: 0; padding-right: 0; }
.so-pillar-num { display: block; font-family: var(--so-serif); font-size: .85rem; color: var(--so-gold); font-weight: 700; margin-bottom: 18px; }
.so-pillar h3 { font-size: 1.18rem; margin-bottom: 12px; }
.so-pillar p { color: var(--so-muted); font-size: .92rem; }

/* ---------- Coverage ---------- */
.so-region-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.so-region {
  display: block; background: var(--so-surface); border: 1px solid var(--so-border); border-radius: 4px;
  padding: 28px 24px; transition: transform .35s var(--so-ease), box-shadow .35s var(--so-ease), border-color .35s var(--so-ease);
}
.so-region h3 { font-size: 1.4rem; margin: 14px 0 8px; }
.so-region p { color: var(--so-muted); font-size: .88rem; }
.so-region-status {
  display: inline-block; font-size: .68rem; font-weight: 700; letter-spacing: .06em;
  padding: 4px 10px; border-radius: 999px; background: #eef1e9; color: #4a6a3d;
}
.so-region-status-soon { background: #f1efe8; color: var(--so-muted); }
.so-region-live { cursor: pointer; border-color: var(--so-navy); }
.so-region-live:hover { transform: translateY(-4px); box-shadow: 0 16px 36px rgba(16,35,63,0.12); }
.so-region-link { display: block; margin-top: 14px; font-size: .8rem; font-weight: 700; color: var(--so-navy); }

/* ---------- Live / sokcho-on ---------- */
.so-live { background: var(--so-navy); color: #eef1f7; }
.so-live .so-kicker { color: #d9b76a; }
.so-live-inner { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,420px); gap: 64px; align-items: center; }
.so-live-copy h2 { color: #fff; margin-bottom: 20px; }
.so-live-copy p { color: #c3cbdb; margin-bottom: 24px; }
.so-live-points { display: flex; flex-direction: column; gap: 12px; margin-bottom: 32px; }
.so-live-points li { padding-left: 22px; position: relative; color: #dde3ee; font-size: .95rem; }
.so-live-points li::before { content: "—"; position: absolute; left: 0; color: var(--so-gold); }
.so-live .so-btn-primary { background: #fff; color: var(--so-navy); }
.so-live .so-btn-primary .so-btn-arrow { background: rgba(16,35,63,0.1); }
.so-live .so-btn-primary:hover { background: var(--so-gold); color: #fff; }

.so-live-card {
  background: #fff; color: var(--so-ink); border-radius: 8px; padding: 22px 24px;
  box-shadow: 0 30px 70px rgba(0,0,0,0.35);
  transform: rotate(-1.4deg);
}
.so-live-card-bar { display: flex; gap: 6px; margin-bottom: 18px; }
.so-live-card-bar span { width: 8px; height: 8px; border-radius: 50%; background: var(--so-border); }
.so-live-card-mast { font-family: var(--so-serif); font-weight: 900; font-size: 1.3rem; border-bottom: 2px solid var(--so-ink); padding-bottom: 12px; margin-bottom: 16px; }
.so-live-card-line { height: 10px; background: #eee7d7; border-radius: 3px; margin-bottom: 10px; }
.so-live-card-line-lg { height: 16px; width: 88%; background: #e3dcc9; }
.so-live-card-line-sm { width: 55%; }
.so-live-card-tag {
  display: inline-block; background: var(--so-red); color: #fff; font-size: .68rem; font-weight: 700;
  padding: 3px 9px; border-radius: 3px; margin: 6px 0 12px;
}

/* ---------- Join ---------- */
.so-join-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.so-join-card {
  background: var(--so-surface); border: 1px solid var(--so-border); border-radius: 4px; padding: 32px 26px;
  transition: transform .35s var(--so-ease), box-shadow .35s var(--so-ease);
}
.so-join-card:hover { transform: translateY(-4px); box-shadow: 0 16px 36px rgba(16,35,63,0.08); }
.so-join-card h3 { font-size: 1.1rem; margin-bottom: 12px; }
.so-join-card p { color: var(--so-muted); font-size: .9rem; margin-bottom: 18px; }
.so-join-card a { font-weight: 700; color: var(--so-navy); font-size: .92rem; }
.so-join-card a:hover { color: var(--so-red); }

/* ---------- Footer ---------- */
.so-footer { background: var(--so-navy-deep); color: #93a0b6; padding: 56px 0 32px; }
.so-footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; padding-bottom: 28px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.so-footer-brand { display: flex; align-items: center; gap: 18px; }
.so-brand-logo-footer { height: 52px; }
.so-footer-desc { font-size: .82rem; margin-top: 4px; max-width: 220px; }
.so-footer-links { display: flex; gap: 22px; font-size: .88rem; font-weight: 600; }
.so-footer-links a:hover { color: #fff; }
.so-footer-copy { font-size: .78rem; margin-top: 20px; }

/* ---------- Scroll reveal ---------- */
.so-reveal { opacity: 0; transform: translateY(22px); filter: blur(6px); transition: opacity .9s var(--so-ease), transform .9s var(--so-ease), filter .9s var(--so-ease); }
.so-reveal.is-visible { opacity: 1; transform: translateY(0); filter: blur(0); }
@media (prefers-reduced-motion: reduce) {
  .so-reveal { opacity: 1; transform: none; filter: none; transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .so-pillars { grid-template-columns: repeat(2, 1fr); }
  .so-pillar { border-right: 0; border-bottom: 1px solid var(--so-border); padding: 32px 24px; }
  .so-pillar:nth-child(odd) { padding-left: 0; }
  .so-pillar:nth-child(even) { padding-right: 0; }
  .so-region-grid { grid-template-columns: repeat(2, 1fr); }
  .so-live-inner { grid-template-columns: 1fr; gap: 48px; }
  .so-live-card { max-width: 420px; }
  .so-join-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .so-header-top-inner { font-size: .7rem; }
  .so-header-tagline { display: none; }
  .so-nav { position: fixed; inset: 0 0 0 auto; width: min(78vw, 320px); background: var(--so-bg);
    flex-direction: column; align-items: flex-start; gap: 4px; padding: 100px 28px 28px;
    transform: translateX(100%); transition: transform .4s var(--so-ease); box-shadow: -20px 0 50px rgba(0,0,0,0.15); }
  .so-nav.is-open { transform: translateX(0); }
  .so-nav a { width: 100%; padding: 14px 0; border-bottom: 1px solid var(--so-border); font-size: 1.05rem; }
  .so-cta-small { display: none; }
  .so-menu-toggle { display: flex; }
  .so-hero { padding: 64px 0 56px; }
  section { padding: 64px 0; }
  .so-pillars { grid-template-columns: 1fr; }
  .so-pillar { padding-left: 0; padding-right: 0; }
  .so-region-grid { grid-template-columns: 1fr; }
}