/* 스크롤 리듬 + 공용 컴포넌트 (헤더/푸터/마퀴/타임라인/케이스/도식/프로세스) */

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { transition: none; opacity: 1; transform: none; }
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--black);
  border-bottom: 1px solid var(--line-on-black);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: 64px;
}
.site-logo { color: var(--white); font-weight: 800; font-size: 17px; text-decoration: none; letter-spacing: -0.01em; flex: none; }
.site-philosophy {
  display: none;
  color: var(--paper-mute);
  font-size: 13px;
  font-weight: 500;
  text-align: center;
  flex: 1;
  padding: 0 16px;
}
.site-header__actions { display: flex; align-items: center; gap: 8px; flex: none; }
.icon-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line-on-black);
  color: var(--white);
  text-decoration: none;
}
.icon-link:hover { border-color: var(--lime); color: var(--lime); }
.header-cta {
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--lime);
  color: var(--black);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  text-decoration: none;
  border: none;
  cursor: pointer;
}
@media (min-width: 860px) {
  .site-philosophy { display: block; }
  .site-header__inner { height: 76px; }
}
@media (max-width: 859px) {
  .site-header__actions .icon-link { display: none; }
}

/* ---------- fixed contact bar ---------- */
.contact-bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 150;
  display: flex; height: 58px;
  box-shadow: 0 -4px 20px rgba(0,0,0,.25);
}
.contact-bar__btn {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; font-size: 11px; font-weight: 700; text-decoration: none;
}
.contact-bar__btn--tel { background: var(--lime); color: var(--black); }
.contact-bar__btn--sms { background: var(--black); color: var(--white); }
.contact-bar__btn--kakao { background: #FEE500; color: #191600; }
body { padding-bottom: 58px; }
@media (min-width: 860px) {
  body { padding-bottom: 0; }
  .contact-bar { left: auto; right: 28px; bottom: 28px; flex-direction: column; height: auto; width: 72px; border-radius: 12px; overflow: hidden; }
  .contact-bar__btn { flex: none; height: 68px; }
}

.contact-cta { display: inline-flex; flex-wrap: wrap; gap: 12px; }
.contact-cta__btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 16px 26px; border-radius: 999px; font-size: 15px; font-weight: 700; text-decoration: none; white-space: nowrap;
}
.contact-cta__btn--tel { background: var(--lime); color: var(--black); }
.contact-cta__btn--sms { background: var(--white); color: var(--black); border: 1.5px solid var(--black); }
.contact-cta__btn--kakao { background: #FEE500; color: #191600; }
.on-black .contact-cta__btn--sms { background: transparent; color: var(--white); border-color: rgba(255,255,255,.5); }

/* ---------- footer ---------- */
.site-footer { background: var(--black-soft); color: var(--paper-mute); padding: 56px 0 88px; }
@media (min-width: 860px) { .site-footer { padding-bottom: 64px; } }
.site-footer__brand { color: var(--white); font-weight: 800; font-size: 18px; margin-bottom: 14px; }
.site-footer__line { font-size: 13px; margin: 0 0 6px; }
.site-footer__notice { font-size: 12px; color: rgba(255,255,255,.4); margin: 4px 0 0; }
.site-footer__links { display: flex; flex-wrap: wrap; gap: 10px 18px; margin: 28px 0; padding: 24px 0; border-top: 1px solid var(--line-on-black); border-bottom: 1px solid var(--line-on-black); }
.site-footer__links a { color: var(--paper-mute); font-size: 13px; text-decoration: none; }
.site-footer__links a:hover { color: var(--lime); }

/* ---------- marquee (section 4) ---------- */
.marquee { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); }
.marquee__track { display: flex; width: max-content; gap: 20px; animation: marquee-scroll 46s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
@keyframes marquee-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .marquee__track { animation: none; overflow-x: auto; } }
.review-card { flex: none; width: 320px; background: var(--white); border: 1px solid var(--line-on-white); border-radius: 8px; padding: 28px; }
.review-card p { font-size: 16px; line-height: 1.6; margin-bottom: 16px; }
.review-card__meta { font-size: 13px; color: var(--ink-mute); }

/* ---------- section 3: timing timeline ---------- */
.timeline { display: flex; flex-direction: column; gap: 0; max-width: 640px; margin: 0 auto; }
.timeline__step { display: flex; align-items: center; gap: 20px; padding: 22px 0; opacity: 0.35; transition: opacity 0.5s ease; }
.timeline__step.in-view { opacity: 1; }
.timeline__dot { flex: none; width: 14px; height: 14px; border-radius: 50%; background: var(--line-on-white); }
.timeline__step.in-view .timeline__dot { background: var(--lime-deep); }
.timeline__label { display: block; font-size: clamp(20px, 3vw, 30px); font-weight: 800; }
.timeline__hint { display: block; font-size: 14px; color: var(--ink-mute); margin-top: 4px; font-weight: 500; }
.timeline__hint a { color: var(--ink-mute); text-decoration: underline; text-underline-offset: 2px; }
.timeline__hint a:hover { color: var(--lime-deep); }
.timeline__connector { width: 2px; height: 40px; background: var(--line-on-white); margin-left: 6px; }

/* ---------- section 5: case interactive ---------- */
.case-layout { display: grid; gap: 28px; }
@media (min-width: 900px) { .case-layout { grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items: stretch; } }
.case-list { display: flex; flex-direction: column; gap: 12px; }
.case-card {
  text-align: left; width: 100%; background: var(--white); border: 1px solid var(--line-on-white); border-radius: 6px;
  padding: 24px; cursor: pointer; transition: border-color 0.2s ease, background 0.2s ease;
}
.case-card:hover { border-color: var(--lime-deep); }
.case-card.is-active { background: var(--black); border-color: var(--black); }
.case-card.is-active .case-card__industry,
.case-card.is-active .case-card__situation,
.case-card.is-active .case-card__point-label { color: var(--white); }
.case-card.is-active .case-card__point { color: var(--lime); }
.case-card__industry { font-size: 20px; font-weight: 800; margin-bottom: 10px; }
.case-card__situation { font-size: 14px; color: var(--ink-mute); margin-bottom: 12px; }
.case-card__point-label { font-size: 12px; font-weight: 700; letter-spacing: 0.05em; color: var(--ink-mute); text-transform: uppercase; margin-bottom: 4px; }
.case-card__point { font-size: 15px; font-weight: 700; color: var(--lime-deep); }
.case-photo { position: relative; aspect-ratio: 4 / 5; border-radius: 6px; overflow: hidden; background: var(--black); }
@media (min-width: 900px) { .case-photo { aspect-ratio: auto; min-height: 420px; } }
.case-photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: none; }
.case-photo img.is-active { display: block; }

/* ---------- section 7: signature diagram ---------- */
.diagram { max-width: 720px; margin: 0 auto; }
.diagram__node { display: flex; align-items: baseline; gap: 20px; padding: 26px 0; border-bottom: 1px solid var(--line-on-black); opacity: 0.3; transform: translateX(-12px); transition: opacity 0.6s ease, transform 0.6s ease; text-decoration: none; color: inherit; }
.diagram__node.in-view { opacity: 1; transform: translateX(0); }
.diagram__node:hover { opacity: 1; }
.diagram__index { font-size: 15px; font-weight: 700; color: var(--lime); flex: none; width: 28px; }
.diagram__label { font-size: clamp(24px, 4vw, 40px); font-weight: 800; }
.diagram__hint { display: block; font-size: 13px; color: var(--paper-mute); margin-top: 6px; font-weight: 500; }
.diagram__arrow { margin-left: auto; flex: none; font-size: 20px; color: var(--lime); opacity: 0; transition: opacity 0.3s ease; }
.diagram__node:hover .diagram__arrow { opacity: 1; }
.diagram__result { margin-top: 48px; text-align: center; padding: 40px 24px; border: 1px solid var(--lime); border-radius: 8px; }

/* ---------- section 8: process numbers ---------- */
.process-list { display: flex; flex-direction: column; }
.process-step { display: grid; gap: 6px; padding: 40px 0; border-bottom: 1px solid var(--line-on-white); }
@media (min-width: 720px) { .process-step { grid-template-columns: 180px 1fr; align-items: center; padding: 56px 0; } }
.process-step__num { font-size: var(--fs-num); font-weight: 800; line-height: 0.85; color: var(--soft-white); -webkit-text-stroke: 2px var(--black); }
.process-step__text { font-size: clamp(22px, 3vw, 36px); font-weight: 800; }

/* ---------- full-bleed photo section ---------- */
/* ---------- section 9: 실제 사진 + 한마디 ---------- */
.meeting-banner { position: relative; aspect-ratio: 4 / 5; overflow: hidden; }
@media (min-width: 720px) { .meeting-banner { aspect-ratio: 3 / 2; } }
.meeting-banner img { width: 100%; height: 100%; object-fit: cover; object-position: center 35%; }
.meeting-banner__overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,.1) 0%, rgba(0,0,0,.75) 100%); display: flex; align-items: flex-end; }
.meeting-banner__text { color: var(--white); font-size: clamp(26px, 4.4vw, 52px); font-weight: 800; line-height: 1.25; padding: 40px 24px; max-width: 900px; }
@media (min-width: 720px) { .meeting-banner__text { padding: 56px; } }