/* ============================================================
   CROCS™ JIBBI CHAIR — MOBILE-FIRST CSS
   Max-width: 430px (iPhone 기준), 전체 모바일 전용
   ============================================================ */

:root {
  --g: #44D62C;          /* crocs green */
  --g-dark: #2fb81c;
  --bk: #000;
  --wh: #fff;
  --gray: #f2f2f2;
  --gray2: #e0e0e0;
  --gray3: #aaa;
  --gray4: #555;
  --header-h: 52px;
  --pad: 20px;
  --font-h: 'Barlow Condensed', sans-serif;
  --font-b: 'Noto Sans KR', sans-serif;
  --ease: cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-b);
  background: var(--wh);
  color: var(--bk);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ── UTILITIES ── */
.eyebrow {
  font-family: var(--font-h);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gray3);
  display: block;
  margin-bottom: 8px;
}
.eyebrow.green { color: var(--g); }
.eyebrow.white { color: rgba(255,255,255,0.7); }

/* ── PLACEHOLDER (회색 박스) ── */
.ph {
  background: #d4d4d4;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.ph::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(45deg, transparent, transparent 8px, rgba(0,0,0,0.04) 8px, rgba(0,0,0,0.04) 9px);
}
.ph span {
  position: relative;
  font-family: var(--font-h);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #888;
  background: rgba(255,255,255,0.8);
  padding: 4px 10px;
  border-radius: 3px;
}

/* placeholder sizes */
.ph-hero        { height: 100vh; min-height: 580px; }
.ph-wide        { height: 220px; width: 100%; }
.ph-sq          { height: 160px; width: 100%; }
.ph-form        { height: 120px; width: 100%; }
.ph-aes         { height: 180px; width: 100%; }
.ph-proc        { height: 160px; width: 140px; flex-shrink: 0; border-radius: 4px; }
.ph-print       { height: 130px; width: 100%; }
.ph-how         { height: 130px; width: 100%; }
.ph-detail-sq   { height: 150px; width: 130px; flex-shrink: 0; border-radius: 4px; }
.ph-fullscreen  { width: 100%; height: 100%; position: absolute; inset: 0; }

/* ── BUTTONS ── */
.m-btn-main {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  background: var(--bk);
  color: var(--wh);
  font-family: var(--font-h);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 16px 24px;
  border: 2px solid var(--bk);
  transition: background .2s var(--ease), color .2s var(--ease);
}
.m-btn-main:active { background: #222; }
.m-btn-main.big { padding: 20px 24px; font-size: 16px; }

.m-btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-h);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bk);
  border-bottom: 2px solid var(--bk);
  padding-bottom: 2px;
  background: transparent;
}
.m-btn-ghost.sm { font-size: 12px; }
.m-btn-ghost:active { opacity: 0.6; }

/* ── HEADER ── */
.m-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--wh);
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad);
  border-bottom: 1px solid var(--gray2);
  box-shadow: 0 1px 8px rgba(0,0,0,.06);
}
.m-logo svg { width: 90px; height: auto; display: block; }
.m-header-cta {
  font-family: var(--font-h);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--g);
  border: 1.5px solid var(--g);
  padding: 6px 12px;
}

/* ── HERO (INDEX) ── */
.m-hero {
  position: relative;
  height: 100svh;
  min-height: 580px;
  overflow: hidden;
}
.m-hero-bg { position: absolute; inset: 0; }
.m-hero-bg .ph-hero { height: 100%; }
.m-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.75) 40%, rgba(0,0,0,.2) 100%);
}
.m-hero-content {
  position: absolute;
  bottom: 80px;
  left: 0; right: 0;
  padding: 0 var(--pad);
  color: var(--wh);
}
.m-hero-title {
  font-family: var(--font-h);
  font-weight: 900;
  font-size: 80px;
  line-height: .88;
  text-transform: uppercase;
  letter-spacing: -.02em;
  margin: 10px 0 14px;
}
.m-hero-sub {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255,255,255,.85);
  margin-bottom: 24px;
}
.m-scroll-hint {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,.6);
  font-size: 18px;
  animation: bounce 1.8s infinite;
}
@keyframes bounce {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(8px); }
}

/* ── INTRO ── */
.m-intro {
  padding: 48px var(--pad);
  border-bottom: 1px solid var(--gray2);
}
.m-intro-title {
  font-family: var(--font-h);
  font-weight: 900;
  font-size: 40px;
  line-height: .95;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.m-intro-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray4);
}
.m-intro-desc strong { color: var(--bk); }

/* ── ROADMAP ── */
.m-roadmap {
  padding: 48px var(--pad);
  background: var(--gray);
}
.m-roadmap-title {
  font-family: var(--font-h);
  font-weight: 900;
  font-size: 36px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.m-roadmap-desc {
  font-size: 13px;
  color: var(--gray4);
  margin-bottom: 28px;
  line-height: 1.6;
}

.m-steps { display: flex; flex-direction: column; gap: 2px; }

.m-step {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--wh);
  padding: 16px 14px;
  border-left: 3px solid transparent;
  transition: border-color .2s var(--ease), background .2s;
  cursor: pointer;
}
.m-step:active { background: #f8f8f8; border-left-color: var(--g); }
.m-step.step-final { border-left: 3px solid var(--g); }

.m-step-num {
  font-family: var(--font-h);
  font-weight: 900;
  font-size: 28px;
  color: var(--g);
  min-width: 36px;
  line-height: 1;
}
.m-step-num.final { color: var(--g); }

.m-step-body { flex: 1; }
.m-step-body h3 {
  font-family: var(--font-h);
  font-weight: 700;
  font-size: 17px;
  text-transform: uppercase;
  letter-spacing: .02em;
  margin-bottom: 2px;
}
.m-step-body p {
  font-size: 12px;
  color: var(--gray3);
  line-height: 1.5;
}
.m-step-arrow { color: var(--gray3); font-size: 13px; }

/* ── CTA SECTION ── */
.m-cta {
  background: var(--g);
  padding: 56px var(--pad);
  text-align: center;
}
.m-cta h2 {
  font-family: var(--font-h);
  font-weight: 900;
  font-size: 52px;
  line-height: .92;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.m-cta .m-btn-main {
  background: var(--bk);
  border-color: var(--bk);
  color: var(--wh);
}

/* ── PREVIEW GRID ── */
.m-preview {
  padding: 48px var(--pad);
}
.m-preview-title {
  font-family: var(--font-h);
  font-weight: 900;
  font-size: 36px;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.m-preview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 24px;
}
.m-preview-grid .ph-sq { border-radius: 4px; }

/* ── JIBBITZ TEASER ── */
.m-jibbitz-teaser { background: var(--bk); color: var(--wh); }
.m-jibbitz-text {
  padding: 36px var(--pad);
}
.m-jibbitz-text h2 {
  font-family: var(--font-h);
  font-weight: 900;
  font-size: 44px;
  line-height: .92;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.m-jibbitz-text p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,.75);
  margin-bottom: 24px;
}
.m-jibbitz-text .m-btn-ghost { color: var(--g); border-color: var(--g); }

/* ── FOOTER ── */
.m-footer {
  background: var(--bk);
  color: var(--wh);
  padding: 40px var(--pad) 48px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}
.m-footer-logo { width: 80px; }
.m-footer-tag {
  font-family: var(--font-h);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--g);
  text-transform: uppercase;
}
.m-footer-dis {
  font-size: 11px;
  color: #666;
  line-height: 1.7;
}

/* ── INTRO SCHOOL ── */
.intro-school {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.intro-school span {
  font-family: var(--font-h);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray3);
  background: var(--gray);
  padding: 4px 12px;
}

/* ── KEY CONCEPT STRIP ── */
.m-key-concepts {
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--bk);
}
.kc-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px var(--pad);
  border-bottom: 1px solid #1a1a1a;
}
.kc-icon {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
  color: var(--wh);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}
.kc-icon.green { background: var(--g); color: var(--bk); }
.kc-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.kc-text strong {
  font-family: var(--font-h);
  font-weight: 800;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--wh);
}
.kc-text span {
  font-size: 12px;
  color: rgba(255,255,255,.5);
}

/* ── PERSONA PREVIEW ── */
.m-persona-preview {
  padding: 48px var(--pad);
  background: var(--gray);
}
.persona-preview-cards {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-bottom: 20px;
}
.ppc-card {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px 14px;
  background: var(--wh);
  border-radius: 4px;
}
.ppc-card.child { border-left: 4px solid var(--bk); }
.ppc-card.parent { border-left: 4px solid var(--g); }
.ppc-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--bk);
  color: var(--wh);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.ppc-avatar.green { background: var(--g); color: var(--bk); }
.ppc-label {
  display: inline-block;
  font-family: var(--font-h);
  font-weight: 700;
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray3);
  margin-bottom: 4px;
}
.ppc-info strong {
  display: block;
  font-family: var(--font-h);
  font-weight: 900;
  font-size: 18px;
  text-transform: uppercase;
  margin-bottom: 5px;
}
.ppc-info p {
  font-size: 12px;
  color: var(--gray4);
  font-style: italic;
  line-height: 1.5;
  margin-bottom: 8px;
}
.ppc-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.ppc-tags span {
  background: var(--gray);
  font-family: var(--font-h);
  font-weight: 700;
  font-size: 10px;
  letter-spacing: .04em;
  padding: 2px 8px;
  color: var(--gray4);
}

/* ── SIZE TEASER ── */
.m-size-teaser {
  padding: 48px var(--pad);
  background: var(--bk);
  color: var(--wh);
  text-align: center;
}
.m-size-teaser h2 {
  font-family: var(--font-h);
  font-weight: 900;
  font-size: 40px;
  text-transform: uppercase;
  line-height: .95;
  margin-bottom: 24px;
}
.size-nums {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 0;
  margin-bottom: 16px;
}
.sn-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 14px;
  flex: 1;
}
.sn-val {
  font-family: var(--font-h);
  font-weight: 900;
  font-size: 28px;
  color: var(--g);
  line-height: 1;
}
.sn-unit {
  font-family: var(--font-h);
  font-weight: 700;
  font-size: 12px;
  color: rgba(255,255,255,.4);
  margin-bottom: 4px;
}
.sn-label {
  font-family: var(--font-h);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
  text-align: center;
  line-height: 1.3;
}
.sn-divider {
  width: 1px;
  background: #333;
  margin: 8px 0;
}
.size-sub {
  font-size: 11px;
  color: rgba(255,255,255,.35);
  margin-bottom: 20px;
  line-height: 1.6;
}
.m-size-teaser .m-btn-ghost { color: var(--g); border-color: var(--g); }

/* ── JIBBITZ MINI FEATS ── */
.jibbitz-mini-feats {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}
.jibbitz-mini-feats span {
  font-family: var(--font-h);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .04em;
  color: rgba(255,255,255,.7);
  display: flex;
  align-items: center;
  gap: 8px;
}
.jibbitz-mini-feats i { color: var(--g); }

/* ── FOOTER SCHOOL ── */
.m-footer-school {
  font-family: var(--font-h);
  font-size: 11px;
  letter-spacing: .08em;
  color: rgba(255,255,255,.4);
  line-height: 1.7;
  text-transform: uppercase;
}

/* ── SCROLL REVEAL ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .55s var(--ease), transform .55s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ════════════════════════════
   INDEX — 신규 섹션 CSS
════════════════════════════ */

/* 인트로 팀 */
.intro-team {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--gray2);
}
.team-names {
  font-family: var(--font-h);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.team-school {
  font-size: 11px;
  color: var(--gray3);
  line-height: 1.6;
}

/* 컨셉 스트립 */
.m-concept-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--bk);
  padding: 2px;
}
.cs-item {
  display: flex;
  gap: 12px;
  align-items: center;
  background: var(--bk);
  padding: 16px 14px;
  border-bottom: 1px solid #1a1a1a;
}
.cs-icon {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
  color: var(--wh);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}
.cs-icon.green { background: var(--g); color: var(--bk); }
.cs-text { display: flex; flex-direction: column; gap: 2px; }
.cs-text strong {
  font-family: var(--font-h);
  font-weight: 800;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: rgba(255,255,255,.4);
}
.cs-text span {
  font-family: var(--font-h);
  font-weight: 700;
  font-size: 13px;
  color: var(--wh);
  letter-spacing: .02em;
}

/* 페르소나 티저 */
.m-persona-teaser {
  padding: 48px var(--pad);
  background: var(--gray);
}
.m-persona-title {
  font-family: var(--font-h);
  font-weight: 900;
  font-size: 36px;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.m-persona-pair {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-bottom: 20px;
}
.mp-card {
  display: flex;
  gap: 14px;
  align-items: center;
  padding: 18px 14px;
  background: var(--wh);
  border-radius: 4px;
}
.mp-card.child-card  { border-left: 4px solid var(--bk); }
.mp-card.parent-card { border-left: 4px solid var(--g); }
.mp-avatar {
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--bk);
  color: var(--wh);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.mp-avatar.green { background: var(--g); color: var(--bk); }
.mp-type {
  display: block;
  font-family: var(--font-h);
  font-weight: 700;
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray3);
  margin-bottom: 3px;
}
.mp-info h3 {
  font-family: var(--font-h);
  font-weight: 900;
  font-size: 20px;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.mp-info h3 em {
  font-style: normal;
  font-size: 14px;
  opacity: .5;
}
.mp-info p {
  font-size: 12px;
  color: var(--gray4);
  font-style: italic;
  line-height: 1.5;
}

/* 피처 리스트 */
.m-features {
  padding: 48px var(--pad);
}
.m-features-title {
  font-family: var(--font-h);
  font-weight: 900;
  font-size: 36px;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.m-feat-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.mf-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px 14px;
  background: var(--gray);
  border-left: 3px solid transparent;
}
.mf-item:nth-child(odd) { background: var(--wh); }
.mf-item:nth-child(even) { border-left-color: var(--g); }
.mf-num {
  font-family: var(--font-h);
  font-weight: 900;
  font-size: 30px;
  color: var(--g);
  line-height: 1;
  flex-shrink: 0;
  min-width: 36px;
}
.mf-body h4 {
  font-family: var(--font-h);
  font-weight: 800;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: .02em;
  margin-bottom: 4px;
}
.mf-body p { font-size: 12px; color: var(--gray4); line-height: 1.5; }

/* 푸터 팀 */
.m-footer-team {
  font-family: var(--font-h);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
}