/* ============================================================
   WESCO v5 - Premium Industrial · Bigger Type
   ============================================================ */

:root {
  --c-red: #C13816;
  --c-red-dk: #9C2C10;
  --c-red-lt: #FBEEE8;
  --c-red-soft: #F0CDBE;
  --c-head: #2C2924;
  --c-text: #4A4641;
  --c-gray: #78716C;
  --c-gray-lt: #A8A29E;
  --c-gray-xl: #D6D3CD;
  --c-bg: #FDFCF9;
  --c-bg-soft: #F7F4EE;
  --c-bg-warm: #F0EBE3;
  --c-divider: #E0DBD3;
  --c-accent: #4F6886;
  --c-accent-lt: #EBF0F7;
  --c-green: #4F926D;
  --c-green-lt: #E5EFE9;
  --c-dark: #1F1D1A;

  --font-ko: 'Noto Sans KR', '맑은 고딕', sans-serif;
  --font-en: 'Inter', Arial, sans-serif;

  --sb-w: 230px;
  --max-w: 1280px;
  --pad-x: 64px;

  --c-red-tint: color-mix(in srgb, var(--c-red) 12%, transparent);

  /* alias for v6.16 industries/CTA sections */
  --c-sub: var(--c-gray);
}

/* Section eyebrow (industries / CTA 공용 — v6.16) */
.section-eyebrow {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 11.5px;
  font-weight: 700;
  color: var(--c-red);
  letter-spacing: 0.22em;
  margin-bottom: 16px;
  padding-bottom: 6px;
  border-bottom: 1.5px solid var(--c-red);
  text-transform: uppercase;
}

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

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  font-family: var(--font-ko);
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  font-weight: 400;
}

img { max-width: 100%; display: block; }
sup { font-size: 0.55em; vertical-align: super; }

/* Cursor Glow */
.cursor-glow {
  position: fixed;
  top: 0; left: 0;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--c-red) 35%, transparent) 0%, transparent 70%);
  pointer-events: none;
  z-index: 50;
  opacity: 0;
  transform: translate(-50%, -50%);
  transition: opacity 0.4s ease;
  mix-blend-mode: screen;
  filter: blur(40px);
}

body.cursor-active .cursor-glow { opacity: 1; }
@media (hover: none) { .cursor-glow { display: none; } }

/* ============================================================
   사이드바
   ============================================================ */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sb-w);
  height: 100vh;
  background: var(--c-bg);
  border-right: 1px solid var(--c-divider);
  padding: 18px 0 14px;
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-brand { padding: 0 22px 14px; border-bottom: 1px solid var(--c-divider); display: flex; flex-direction: column; gap: 4px; }
.brand-logo { width: 96px; height: auto; }
.brand-tag { font-family: var(--font-en); font-size: 10px; color: var(--c-gray); letter-spacing: 0.05em; font-weight: 500; text-transform: uppercase; }

.sidebar-nav { flex: 1; padding: 8px 0; display: flex; flex-direction: column; }

.nav-item {
  display: flex; align-items: center; gap: 9px;
  padding: 6px 22px;
  text-decoration: none; color: var(--c-gray);
  font-size: 12px; font-weight: 500;
  border-left: 2px solid transparent;
  transition: all 0.2s ease;
  min-height: 32px;
}

.nav-item:hover { color: var(--c-head); background: var(--c-bg-soft); }
.nav-item.active { color: var(--c-red); border-left-color: var(--c-red); background: var(--c-red-tint); font-weight: 700; }

.nav-no { font-family: var(--font-en); font-size: 10px; font-weight: 600; color: var(--c-gray-lt); letter-spacing: 0.05em; min-width: 18px; }
.nav-item.active .nav-no { color: var(--c-red); }

.sidebar-footer { padding: 14px 22px 0; border-top: 1px solid var(--c-divider); }

.sidebar-cta {
  display: block; background: var(--c-head); color: var(--c-bg);
  text-align: center; padding: 11px 14px;
  border-radius: 3px; font-size: 12px; font-weight: 600;
  text-decoration: none; transition: all 0.3s; margin-bottom: 10px;
  font-family: var(--font-en); letter-spacing: 0.05em; text-transform: uppercase;
}

.sidebar-cta:hover { background: var(--c-red); transform: translateY(-1px); box-shadow: 0 6px 16px color-mix(in srgb, var(--c-red) 30%, transparent); }

.sidebar-social { display: flex; gap: 8px; margin-bottom: 10px; }
.sidebar-social a {
  display: flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
  border: 1px solid var(--c-divider); border-radius: 3px;
  color: var(--c-gray); transition: all 0.2s; text-decoration: none;
}
.sidebar-social a:hover { color: var(--c-red); border-color: var(--c-red); background: var(--c-red-lt); }

.sidebar-meta { font-family: var(--font-en); font-size: 10px; color: var(--c-gray-lt); text-align: center; }

.mobile-toggle {
  display: none; position: fixed; top: 14px; right: 14px;
  width: 42px; height: 42px;
  background: var(--c-bg); border: 1px solid var(--c-divider); border-radius: 4px;
  cursor: pointer; z-index: 200;
  flex-direction: column; justify-content: center; align-items: center; gap: 4px;
}
.mobile-toggle span { display: block; width: 20px; height: 1.5px; background: var(--c-head); }

.progress-bar { position: fixed; top: 0; left: var(--sb-w); right: 0; height: 2px; background: transparent; z-index: 99; }
.progress-fill { height: 100%; width: 0%; background: var(--c-red); transition: width 0.1s linear; }

/* ============================================================
   Main + 공통 (글씨 전반 키움)
   ============================================================ */
.main {
  margin-left: var(--sb-w);
  scroll-snap-type: y proximity;
  height: 100vh;
  overflow-y: scroll;
}

.main::-webkit-scrollbar { width: 8px; }
.main::-webkit-scrollbar-thumb { background: var(--c-divider); border-radius: 4px; }
.main::-webkit-scrollbar-track { background: transparent; }

.section {
  min-height: 100vh;
  scroll-snap-align: start;
  padding: 64px var(--pad-x) 56px;
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex; flex-direction: column; justify-content: center;
}

.section-head { margin-bottom: 36px; }

.section-no {
  display: inline-block;
  font-family: var(--font-en); font-size: 12px; font-weight: 600;
  color: var(--c-red); letter-spacing: 0.18em;
  margin-bottom: 14px; padding-bottom: 5px;
  border-bottom: 1.5px solid var(--c-red);
}

.section-title {
  font-size: 40px; font-weight: 700; color: var(--c-head);
  line-height: 1.2; margin-bottom: 14px;
  letter-spacing: -0.025em;
}

.section-sub { font-size: 17px; color: var(--c-gray); line-height: 1.6; }
.section-sub strong { color: var(--c-head); font-weight: 600; }

/* Reveal */
[data-reveal] {
  opacity: 0; transform: translateY(28px);
  transition: opacity 1.0s cubic-bezier(0.22, 0.61, 0.36, 1), transform 1.0s cubic-bezier(0.22, 0.61, 0.36, 1);
}
[data-reveal].in-view { opacity: 1; transform: translateY(0); }

[data-reveal-stagger] > * {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
[data-reveal-stagger].in-view > * { opacity: 1; transform: translateY(0); }
[data-reveal-stagger].in-view > *:nth-child(1) { transition-delay: 0s; }
[data-reveal-stagger].in-view > *:nth-child(2) { transition-delay: 0.1s; }
[data-reveal-stagger].in-view > *:nth-child(3) { transition-delay: 0.2s; }
[data-reveal-stagger].in-view > *:nth-child(4) { transition-delay: 0.3s; }
[data-reveal-stagger].in-view > *:nth-child(5) { transition-delay: 0.4s; }
[data-reveal-stagger].in-view > *:nth-child(6) { transition-delay: 0.5s; }
[data-reveal-stagger].in-view > *:nth-child(7) { transition-delay: 0.6s; }
[data-reveal-stagger].in-view > *:nth-child(8) { transition-delay: 0.7s; }

[data-magnetic] { transition: transform 0.35s cubic-bezier(0.5, 0, 0.5, 1); will-change: transform; }

/* ============================================================
   00. Hero
   ============================================================ */
.section-hero { position: relative; background: var(--c-bg); overflow: hidden; padding: 64px var(--pad-x); }
.hero-bg { position: absolute; inset: 0; pointer-events: none; opacity: 0.35; }
.hero-waveform { position: absolute; bottom: 5%; left: 0; width: 100%; height: 180px; }
.hero-inner { position: relative; z-index: 2; max-width: 1020px; }

.hero-tag { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
.tag-line { width: 32px; height: 1.5px; background: var(--c-red); }
.hero-tag span:last-child {
  font-family: var(--font-en); font-size: 11.5px; font-weight: 600;
  color: var(--c-head); letter-spacing: 0.22em;
}

.hero-title {
  font-size: 88px; font-weight: 700; color: var(--c-head);
  line-height: 0.98; letter-spacing: -0.045em;
  margin-bottom: 28px;
}
.hero-title-em { color: var(--c-red); }

.hero-tagline {
  font-size: 17.5px; color: var(--c-text);
  line-height: 1.85; margin-bottom: 40px;
  max-width: 820px;
}
.hero-tagline strong { color: var(--c-head); font-weight: 700; letter-spacing: -0.005em; }
.hero-tagline em { font-style: normal; color: var(--c-red); font-weight: 700; }

.hero-metrics {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
  padding: 28px 0; border-top: 1px solid var(--c-divider);
  border-bottom: 1px solid var(--c-divider); margin-bottom: 32px;
}

.metric { text-align: left; }

.metric-num {
  font-family: var(--font-en); font-size: 46px; font-weight: 700;
  color: var(--c-head); line-height: 1;
  display: flex; align-items: baseline; gap: 4px;
  letter-spacing: -0.03em;
}

.metric-suffix { font-size: 15px; font-weight: 600; color: var(--c-red); }

.metric-label {
  font-family: var(--font-en); font-size: 11.5px;
  color: var(--c-gray); margin-top: 8px;
  letter-spacing: 0.05em; text-transform: uppercase; font-weight: 500;
}

/* 산업 카탈로그 톤 */
.hero-industries { margin-bottom: 32px; }
.ind-head-mini {
  font-family: var(--font-en); font-size: 11px; font-weight: 600;
  color: var(--c-gray); letter-spacing: 0.22em;
  margin-bottom: 14px; padding-bottom: 10px;
  border-bottom: 1px solid var(--c-divider);
}

.ind-table { display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; }

.ind-col { padding: 4px 16px 4px 0; border-right: 1px solid var(--c-divider); }
.ind-col:last-child { border-right: none; }

.ind-col-label { font-size: 13px; font-weight: 500; color: var(--c-gray); margin-bottom: 4px; }
.ind-col-num {
  font-family: var(--font-en); font-size: 19px; font-weight: 700;
  color: var(--c-head); letter-spacing: -0.02em; line-height: 1.1;
}
.ind-col-num span { color: var(--c-red); font-size: 14px; margin-left: 1px; }
.ind-col-num-sub { font-family: var(--font-ko); font-size: 14px; font-weight: 500; color: var(--c-gray-lt); }

.hero-yt {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px;
  background: transparent; color: var(--c-head);
  text-decoration: none; border: 1px solid var(--c-divider); border-radius: 3px;
  font-size: 12.5px; font-weight: 600; letter-spacing: 0.03em;
  transition: all 0.3s;
}
.hero-yt:hover { border-color: var(--c-red); color: var(--c-red); }
.hero-yt svg:first-child { color: var(--c-red); }

/* ============================================================
   01. About
   ============================================================ */
.about-layout { display: grid; grid-template-columns: 1.7fr 1fr; gap: 28px; align-items: start; }

.kw-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }

.kw-card {
  background: var(--c-bg); border: 1px solid var(--c-divider);
  border-radius: 4px; padding: 20px 18px;
  transition: all 0.3s;
}
.kw-card:hover { border-color: var(--c-red); transform: translateY(-3px); box-shadow: 0 8px 20px color-mix(in srgb, var(--c-head) 6%, transparent); }
.kw-card-em { background: var(--c-red-lt); border-color: var(--c-red); }

.kw-tag {
  font-family: var(--font-en); font-size: 10.5px; font-weight: 600;
  color: var(--c-gray); letter-spacing: 0.12em;
  margin-bottom: 10px; text-transform: uppercase;
}
.kw-card-em .kw-tag { color: var(--c-red); }

.kw-num { font-size: 19px; font-weight: 700; color: var(--c-head); line-height: 1.15; margin-bottom: 6px; letter-spacing: -0.01em; }
.kw-label { font-size: 13px; color: var(--c-text); line-height: 1.45; }

.about-photos { display: flex; flex-direction: column; gap: 10px; max-width: 360px; }
.photo-main { aspect-ratio: 320 / 200; }
.photo-sub { display: flex; flex-direction: column; gap: 10px; }
.photo-sub .photo-item { aspect-ratio: 320 / 160; }

.photo-main, .photo-item {
  position: relative; border-radius: 4px;
  overflow: hidden; background: var(--c-bg-soft);
}

.photo-main img, .photo-item img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.8s ease; display: block;
}

.photo-cap, .photo-cap-sm {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: linear-gradient(180deg, transparent, rgba(31, 29, 26, 0.85));
  color: var(--c-bg); padding: 16px 14px 10px;
  font-size: 13px; font-weight: 600;
}
.photo-cap-sm { padding: 10px 12px 8px; font-size: 12px; }

/* ============================================================
   02. 왜 필요한가 — 큰 임팩트 + 손실 타임라인
   ============================================================ */
.need-impact {
  display: grid; grid-template-columns: 1fr 1.3fr 1fr;
  gap: 18px; margin-bottom: 36px;
}

.impact-kw {
  background: var(--c-bg); border: 1px solid var(--c-divider);
  border-radius: 4px; padding: 32px 30px;
  transition: all 0.3s;
}

.impact-kw-em { background: var(--c-dark); color: var(--c-bg); border-color: var(--c-dark); }

.impact-kw-num {
  font-size: 42px; font-weight: 800; color: var(--c-red);
  line-height: 1.05; margin-bottom: 10px;
  letter-spacing: -0.03em; font-family: var(--font-ko);
}
.impact-kw-em .impact-kw-num { font-size: 32px; color: var(--c-bg); }

.impact-kw-num span { font-size: 19px; color: var(--c-gray); font-weight: 500; margin-left: 4px; }

.impact-kw-label { font-size: 14px; color: var(--c-gray); line-height: 1.55; }
.impact-kw-em .impact-kw-label { color: var(--c-gray-xl); }

.need-row { display: grid; grid-template-columns: 1fr 1.6fr; gap: 24px; }

.cause-block, .impact-block {
  background: var(--c-bg-soft); border-radius: 4px; padding: 28px;
}

.block-h {
  font-size: 19px; font-weight: 700; color: var(--c-head);
  margin-bottom: 10px; letter-spacing: -0.01em;
}
.block-p { font-size: 14.5px; color: var(--c-text); line-height: 1.65; margin-bottom: 18px; }
.block-p strong { color: var(--c-head); font-weight: 700; }

.cause-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }

.cause-card {
  background: var(--c-bg); border: 1px solid var(--c-divider);
  border-radius: 3px; padding: 16px 18px;
  display: flex; align-items: center; gap: 14px;
  transition: all 0.3s;
}
.cause-card:hover { border-color: var(--c-red); transform: translateX(2px); }

.cause-icon { color: var(--c-red); flex-shrink: 0; }
.cause-name { font-size: 14.5px; font-weight: 600; color: var(--c-head); }

/* 손실 타임라인 */
.loss-timeline {
  background: var(--c-bg);
  border: 1px solid var(--c-divider);
  border-radius: 4px;
  padding: 18px 14px;
}

.loss-svg { width: 100%; height: auto; max-height: 290px; display: block; }

.loss-milestone circle { transition: r 0.4s ease, stroke-width 0.4s ease; }
.loss-milestone:hover circle { stroke-width: 4; }

/* ============================================================
   03. 작동 원리
   ============================================================ */
.how-container { display: grid; grid-template-columns: 0.7fr 1.6fr; gap: 24px; margin-bottom: 20px; }

.product-frame {
  position: relative; background: var(--c-bg);
  border: 1px solid var(--c-divider); border-radius: 4px;
  padding: 16px; text-align: center; overflow: hidden;
}

.product-img { width: 100%; height: 250px; object-fit: contain; margin-bottom: 12px; }

.product-label { border-top: 1px solid var(--c-divider); padding-top: 10px; }
.product-name { font-size: 19px; font-weight: 700; color: var(--c-red); margin-bottom: 4px; }
.product-sub { font-family: var(--font-en); font-size: 10.5px; color: var(--c-gray); line-height: 1.4; }

.product-foot {
  font-size: 11.5px; color: var(--c-gray);
  margin-top: 10px; line-height: 1.5;
  text-align: center; font-style: italic;
}

.how-toggle {
  display: flex; gap: 4px; padding: 3px;
  background: var(--c-bg); border: 1px solid var(--c-divider);
  border-radius: 3px; width: fit-content; margin-bottom: 14px;
}

.toggle-btn {
  padding: 9px 22px; border: none; background: transparent;
  font-size: 13px; font-weight: 600; color: var(--c-gray);
  cursor: pointer; border-radius: 2px;
  transition: all 0.3s; font-family: var(--font-ko);
}

.toggle-btn:hover { color: var(--c-head); }
.toggle-btn.active { background: var(--c-head); color: var(--c-bg); }
.toggle-btn[data-mode="comp"].active { background: var(--c-red); }

/* ───────── 시간축 타임라인 ───────── */
.seq-timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin: 14px 0 10px;
  padding: 16px 8px 8px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-divider);
  border-radius: 6px;
}

.seq-track {
  position: absolute;
  top: 28px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: var(--c-divider);
  z-index: 0;
}

.seq-progress-step {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  cursor: default;
}

.seq-marker {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--c-bg);
  border: 2px solid var(--c-divider);
  color: var(--c-gray-lt);
  font-size: 12px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s ease;
  margin-bottom: 6px;
}

.seq-progress-step.done .seq-marker {
  background: var(--c-head);
  border-color: var(--c-head);
  color: var(--c-bg);
}

.seq-progress-step.active .seq-marker {
  background: var(--c-red);
  border-color: var(--c-red);
  color: var(--c-bg);
  transform: scale(1.18);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--c-red) 22%, transparent);
}

.seq-name {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--c-gray);
  margin-bottom: 2px;
}

.seq-progress-step.active .seq-name {
  color: var(--c-red);
}

.seq-time {
  font-family: var(--font-en);
  font-size: 10.5px;
  font-weight: 600;
  color: var(--c-gray-lt);
  letter-spacing: 0.02em;
}

.seq-progress-step.active .seq-time {
  color: var(--c-head);
}

/* ───────── 부하 정상 운전 핵심 메시지 배지 ───────── */
.load-running-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: linear-gradient(90deg, color-mix(in srgb, #10b981 12%, var(--c-bg)) 0%, var(--c-bg) 100%);
  border: 1px solid color-mix(in srgb, #10b981 35%, var(--c-divider));
  border-left: 3px solid #10b981;
  border-radius: 4px;
  margin-bottom: 12px;
  font-size: 12.5px;
  color: var(--c-head);
}

.load-running-badge strong {
  color: #047857;
  font-weight: 800;
}

.lrb-pulse {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  background: #10b981;
  border-radius: 50%;
  position: relative;
  box-shadow: 0 0 0 0 #10b981;
  animation: lrb-pulse 1.6s ease-out infinite;
}

@keyframes lrb-pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, #10b981 70%, transparent); }
  70%  { box-shadow: 0 0 0 10px color-mix(in srgb, #10b981 0%, transparent); }
  100% { box-shadow: 0 0 0 0 color-mix(in srgb, #10b981 0%, transparent); }
}

@media (max-width: 640px) {
  .seq-timeline { padding: 14px 4px 6px; }
  .seq-marker { width: 22px; height: 22px; font-size: 10px; }
  .seq-name { font-size: 10px; }
  .seq-time { font-size: 9.5px; }
  .load-running-badge { font-size: 11.5px; padding: 10px 12px; }
}

.how-stage {
  position: relative; background: var(--c-bg);
  border: 1px solid var(--c-divider); border-radius: 4px;
  padding: 16px; margin-bottom: 12px; overflow: hidden;
}

.tsp-frame { position: relative; z-index: 2; }

.tsp-frame-label {
  font-family: var(--font-en); font-size: 10.5px; font-weight: 700;
  color: var(--c-red); letter-spacing: 0.18em; margin-bottom: 4px;
}

.how-svg { width: 100%; height: auto; }

.storm-fx { position: absolute; inset: 0; pointer-events: none; opacity: 0; z-index: 1; transition: opacity 0.5s; }
.how-stage.storm .storm-fx { opacity: 1; }

/* ═══════════════════ 사실감 있는 SVG 번개 ═══════════════════ */
.lightning-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  mix-blend-mode: screen;
}

/* 외곽 헤일로 — 노란 글로우 */
.bolt-halo {
  fill: none;
  stroke: #fbbf24;
  stroke-width: 7;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0;
  filter: blur(3px);
}

/* 코어 — 흰색 중심 */
.bolt-core {
  fill: none;
  stroke: #ffffff;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0;
}

/* 분기 — 가는 곁가지 */
.bolt-branch {
  fill: none;
  stroke: #fef3c7;
  stroke-width: 1.1;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0;
}

/* 자연스러운 3-strike 패턴 (실제 번개 = 1차 strike + 잔열 + 2차 strike) */
@keyframes boltFlicker {
  0%, 100%      { opacity: 0; }
  2%            { opacity: 0.95; }
  3%, 4%        { opacity: 0.2; }
  5%            { opacity: 1; }
  7%            { opacity: 0.4; }
  8%            { opacity: 0.85; }
  10%           { opacity: 0; }
}

@keyframes haloFlicker {
  0%, 100%      { opacity: 0; }
  2%            { opacity: 0.7; }
  3%, 4%        { opacity: 0.15; }
  5%            { opacity: 0.85; }
  7%            { opacity: 0.3; }
  8%            { opacity: 0.65; }
  10%           { opacity: 0; }
}

/* 3개 bolt를 시간차로 발사 */
.bolt-1 .bolt-core, .bolt-1 .bolt-branch { animation: boltFlicker 4.5s ease-out infinite; }
.bolt-1 .bolt-halo { animation: haloFlicker 4.5s ease-out infinite; }

.bolt-2 .bolt-core, .bolt-2 .bolt-branch { animation: boltFlicker 4.5s ease-out infinite; animation-delay: 1.6s; }
.bolt-2 .bolt-halo { animation: haloFlicker 4.5s ease-out infinite; animation-delay: 1.6s; }

.bolt-3 .bolt-core, .bolt-3 .bolt-branch { animation: boltFlicker 4.5s ease-out infinite; animation-delay: 3.0s; }
.bolt-3 .bolt-halo { animation: haloFlicker 4.5s ease-out infinite; animation-delay: 3.0s; }

/* 배경 섬광 — 번개와 동기화 */
.storm-flash {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 18% 25%, rgba(255, 255, 255, 0.55) 0%, rgba(251, 191, 36, 0.18) 28%, transparent 60%),
    radial-gradient(ellipse at 82% 35%, rgba(255, 255, 255, 0.40) 0%, rgba(251, 191, 36, 0.12) 28%, transparent 55%);
  opacity: 0;
  pointer-events: none;
  animation: stormFlash 4.5s ease-out infinite;
}

@keyframes stormFlash {
  0%, 100%      { opacity: 0; }
  2%            { opacity: 0.8; }
  3%, 4%        { opacity: 0.2; }
  5%            { opacity: 0.9; }
  7%            { opacity: 0.3; }
  8%            { opacity: 0.7; }
  10%           { opacity: 0; }
  35%           { opacity: 0; }
  36%           { opacity: 0.7; }
  37%, 38%      { opacity: 0.15; }
  39%           { opacity: 0.85; }
  41%           { opacity: 0.25; }
  42%           { opacity: 0.6; }
  44%           { opacity: 0; }
  66%           { opacity: 0; }
  67%           { opacity: 0.65; }
  68%, 69%      { opacity: 0.15; }
  70%           { opacity: 0.8; }
  72%           { opacity: 0.2; }
  73%           { opacity: 0.55; }
  75%           { opacity: 0; }
}

/* 사용자가 모션 감소 선호 시 끔 */
@media (prefers-reduced-motion: reduce) {
  .bolt-core, .bolt-halo, .bolt-branch, .storm-flash { animation: none; opacity: 0.35; }
}

.how-stage.storm #grid-input { animation: gridShake 1.2s ease-in-out infinite; }
@keyframes gridShake {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(-1.5px, 0.5px); }
  50% { transform: translate(1px, -1.5px); }
  75% { transform: translate(-0.8px, 1.5px); }
}

#armShoulder { animation: armShoulder 7s ease-in-out infinite; }
#armElbow { animation: armElbow 7s ease-in-out infinite; }
#armWrist { animation: armWrist 7s ease-in-out infinite; }

@keyframes armShoulder {
  0%, 100% { transform: rotate(-12deg); }
  35%, 50% { transform: rotate(18deg); }
  85% { transform: rotate(-12deg); }
}
@keyframes armElbow {
  0%, 100% { transform: rotate(-8deg); }
  20% { transform: rotate(-32deg); }
  35%, 50% { transform: rotate(15deg); }
  70% { transform: rotate(-30deg); }
  85% { transform: rotate(-8deg); }
}
@keyframes armWrist {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(12deg); }
}

#workpiece { animation: workpiecePick 7s ease-in-out infinite; }
@keyframes workpiecePick {
  0%, 18% { opacity: 1; }
  28%, 60% { opacity: 0; }
  72%, 100% { opacity: 1; }
}

.how-info {
  background: var(--c-bg-soft); padding: 18px 22px;
  border-radius: 4px; border-left: 2px solid var(--c-green);
  transition: border-color 0.4s;
}
.how-info.comp { border-left-color: var(--c-red); }

.info-mode {
  font-family: var(--font-en); font-size: 11px; font-weight: 700;
  color: var(--c-green); letter-spacing: 0.12em;
  margin-bottom: 12px; text-transform: uppercase;
}
.how-info.comp .info-mode { color: var(--c-red); }

.info-body { display: flex; flex-direction: column; gap: 8px; }

.seq-step {
  display: flex; gap: 10px; align-items: flex-start;
  font-size: 13px; color: var(--c-text); line-height: 1.55;
}

.seq-no {
  flex-shrink: 0; width: 19px; height: 19px;
  border-radius: 50%; background: var(--c-head); color: var(--c-bg);
  font-family: var(--font-en); font-size: 10px; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
  margin-top: 1px;
}

.how-info.comp .seq-no { background: var(--c-red); }
.seq-step strong { color: var(--c-head); font-weight: 700; }

.how-metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }

.hm-item {
  background: var(--c-bg); border: 1px solid var(--c-divider);
  border-radius: 4px; padding: 16px 12px;
  text-align: center; transition: all 0.3s;
}
.hm-item:hover { border-color: var(--c-red); }

.hm-num {
  font-family: var(--font-en); font-size: 24px; font-weight: 700;
  color: var(--c-red); line-height: 1; margin-bottom: 6px;
  letter-spacing: -0.02em;
}
.hm-num span { font-size: 12px; color: var(--c-gray); margin-left: 2px; font-weight: 500; }
.hm-label { font-size: 11.5px; color: var(--c-text); }

/* ============================================================
   04. 제품 라인업
   ============================================================ */
.products-photo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 20px; }

.prod-photo-card {
  background: var(--c-bg); border: 1px solid var(--c-divider);
  border-radius: 4px; overflow: hidden; transition: all 0.4s;
}
.prod-photo-card:hover {
  border-color: var(--c-red); transform: translateY(-3px);
  box-shadow: 0 12px 28px color-mix(in srgb, var(--c-head) 8%, transparent);
}

.prod-photo {
  position: relative; background: var(--c-bg-soft);
  height: 240px;
  display: flex; align-items: center; justify-content: center;
  padding: 16px; overflow: hidden;
}
.prod-photo img { max-width: 100%; max-height: 100%; object-fit: contain; transition: transform 0.6s ease; }
.prod-photo-card:hover .prod-photo img { transform: scale(1.05); }

.prod-bar { position: absolute; top: 0; left: 0; width: 100%; height: 3px; }
.prod-bar-mono { background: var(--c-accent); }
.prod-bar-tri { background: var(--c-green); }
.prod-bar-large { background: var(--c-red); }

.prod-info { padding: 20px 22px; }

.prod-tag {
  font-family: var(--font-en); font-size: 10.5px; font-weight: 600;
  color: var(--c-gray); letter-spacing: 0.12em;
  margin-bottom: 8px; text-transform: uppercase;
}

.prod-name { font-size: 20px; font-weight: 700; color: var(--c-head); margin-bottom: 6px; }
.prod-range-text {
  font-family: var(--font-en); font-size: 14px; font-weight: 700;
  color: var(--c-red); margin-bottom: 12px;
}

.prod-feat { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.prod-feat li { font-size: 13px; color: var(--c-text); padding-left: 14px; position: relative; }
.prod-feat li::before {
  content: ''; position: absolute; left: 0; top: 8px;
  width: 6px; height: 1px; background: var(--c-red);
}

.cert-strip {
  background: var(--c-bg-soft); border-radius: 4px;
  padding: 18px 24px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}

.cert-head {
  font-family: var(--font-en); font-size: 11px; font-weight: 600;
  color: var(--c-gray); letter-spacing: 0.15em;
  padding-right: 14px; border-right: 1px solid var(--c-divider);
}

.cert-list { display: flex; flex-wrap: wrap; gap: 6px 10px; }

.cert-item {
  font-size: 12.5px; color: var(--c-text);
  padding: 5px 13px; background: var(--c-bg);
  border: 1px solid var(--c-divider); border-radius: 2px; font-weight: 500;
}

.cert-yt {
  margin-left: auto;
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12.5px; color: var(--c-red);
  text-decoration: none; padding: 6px 14px;
  border: 1px solid var(--c-red); border-radius: 2px;
  font-weight: 600; transition: all 0.3s;
}
.cert-yt:hover { background: var(--c-red); color: var(--c-bg); }

/* ============================================================
   05. Sag-VIEWER (다크)
   ============================================================ */
.section-viewer { background: var(--c-dark); color: var(--c-bg); }
.section-viewer .section-no { color: color-mix(in srgb, var(--c-red) 90%, white); border-bottom-color: var(--c-red); }
.section-viewer .section-title { color: var(--c-bg); }
.section-viewer .section-sub { color: var(--c-gray-xl); }
.section-viewer .section-sub strong { color: var(--c-bg); }

.viewer-layout { display: grid; grid-template-columns: 1.4fr 1fr; gap: 24px; align-items: stretch; }

.viewer-screen { display: flex; flex-direction: column; }

.screen-frame {
  background: #000; border: 1px solid #444; border-radius: 6px;
  overflow: hidden; box-shadow: 0 16px 40px color-mix(in srgb, var(--c-red) 12%, black);
  flex: 1; display: flex; flex-direction: column;
}

.screen-header {
  display: flex; align-items: center; gap: 6px;
  background: #2A2724; padding: 8px 12px; border-bottom: 1px solid #444;
}

.screen-dot { width: 9px; height: 9px; border-radius: 50%; }
.screen-dot:nth-child(1) { background: #FF5F56; }
.screen-dot:nth-child(2) { background: #FFBD2E; }
.screen-dot:nth-child(3) { background: #27C93F; }

.screen-title {
  margin-left: 12px;
  font-family: var(--font-en); font-size: 11.5px;
  color: #BBB; letter-spacing: 0.05em;
  transition: color 0.3s;
}

.screen-img {
  width: 100%; height: auto; display: block;
  flex: 1; object-fit: contain; background: #fff;
  transition: opacity 0.4s ease;
}
.screen-img.fading { opacity: 0; }

.screen-cap {
  text-align: center; font-size: 12px;
  color: var(--c-gray-xl); margin-top: 10px;
  font-style: italic; min-height: 36px;
  line-height: 1.5;
}

.viewer-features { display: flex; flex-direction: column; gap: 8px; }

.vf-item {
  display: flex; gap: 14px; align-items: flex-start;
  background: color-mix(in srgb, var(--c-bg) 4%, transparent);
  border: 1px solid color-mix(in srgb, var(--c-bg) 8%, transparent);
  border-left: 2px solid transparent;
  border-radius: 4px; padding: 13px 16px;
  transition: all 0.35s; cursor: pointer;
}

.vf-item:hover {
  border-color: color-mix(in srgb, var(--c-red) 40%, transparent);
  background: color-mix(in srgb, var(--c-red) 6%, transparent);
}

.vf-item.active {
  border-left-color: var(--c-red);
  background: color-mix(in srgb, var(--c-red) 12%, transparent);
}

.vf-no {
  font-family: var(--font-en); font-size: 13px; font-weight: 700;
  color: var(--c-red); letter-spacing: 0.05em;
  flex-shrink: 0; padding-top: 1px;
}

.vf-content { flex: 1; }

.vf-module {
  font-family: var(--font-en); font-size: 9.5px; font-weight: 600;
  color: var(--c-red); letter-spacing: 0.18em;
  margin-bottom: 4px; text-transform: uppercase;
  opacity: 0.85;
}

.vf-content h4 {
  font-size: 14.5px; font-weight: 700; color: var(--c-bg);
  margin-bottom: 4px; letter-spacing: -0.01em;
}

.vf-content p { font-size: 12px; color: var(--c-gray-xl); line-height: 1.5; }

/* ============================================================
   06. 적용 사례 + 메이저 고객사 부각
   ============================================================ */
.major-customers {
  display: flex; flex-direction: column; gap: 14px;
  margin-bottom: 32px;
}

.mc-block {
  background: var(--c-bg);
  border: 1px solid var(--c-divider);
  border-radius: 4px;
  padding: 22px 26px;
  transition: border-color 0.3s;
}

.mc-block:hover { border-color: var(--c-red); }

.mc-tag {
  font-family: var(--font-en); font-size: 11px; font-weight: 700;
  color: var(--c-red); letter-spacing: 0.18em;
  margin-bottom: 14px; padding-bottom: 8px;
  border-bottom: 1px solid var(--c-divider);
}

.mc-list {
  display: flex; flex-wrap: wrap;
  gap: 10px 22px; align-items: baseline;
}

.mc-name {
  font-family: var(--font-en);
  font-size: 17px; font-weight: 500;
  color: var(--c-text);
  letter-spacing: -0.01em;
  position: relative;
}

.mc-name-em {
  font-size: 22px; font-weight: 700;
  color: var(--c-head); letter-spacing: -0.025em;
}

.mc-name-em::after {
  content: '';
  display: inline-block;
  width: 4px; height: 4px;
  background: var(--c-red);
  border-radius: 50%;
  margin-left: 6px;
  vertical-align: middle;
  margin-bottom: 3px;
}

.cases-grid-compact { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }

.case-mini {
  background: var(--c-bg); border: 1px solid var(--c-divider);
  border-radius: 4px; padding: 14px 16px;
  transition: all 0.3s;
}
.case-mini:hover { border-color: var(--c-red); transform: translateY(-2px); }

.case-mini-tag {
  display: inline-block;
  font-family: var(--font-en); font-size: 9.5px; font-weight: 600;
  color: var(--c-red); background: var(--c-red-lt);
  padding: 2px 7px; border-radius: 2px;
  letter-spacing: 0.06em; margin-bottom: 8px; text-transform: uppercase;
}

.case-mini h4 { font-size: 13.5px; font-weight: 700; color: var(--c-head); margin-bottom: 5px; }
.case-mini p { font-size: 12px; line-height: 1.5; color: var(--c-text); }

/* ============================================================
   07. 글로벌 네트워크
   ============================================================ */
.network-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 22px; }

.network-card {
  background: var(--c-bg); border: 1px solid var(--c-divider);
  border-radius: 4px; padding: 26px 28px;
  transition: all 0.4s;
}
.network-card:hover { border-color: var(--c-red); transform: translateY(-3px); box-shadow: 0 10px 24px color-mix(in srgb, var(--c-head) 8%, transparent); }
.network-card-em { background: var(--c-red-lt); border-color: var(--c-red); }

.net-tag {
  font-family: var(--font-en); font-size: 10.5px; font-weight: 600;
  color: var(--c-gray); letter-spacing: 0.18em; margin-bottom: 10px;
}
.network-card-em .net-tag { color: var(--c-red); }

.net-num {
  font-family: var(--font-en); font-size: 40px; font-weight: 700;
  color: var(--c-head); line-height: 1; margin-bottom: 12px;
  letter-spacing: -0.03em;
}
.net-num span { font-size: 16px; color: var(--c-red); margin-left: 5px; font-weight: 500; }

.net-h { font-size: 14px; font-weight: 700; color: var(--c-head); margin-bottom: 6px; }
.network-card p { font-size: 13px; color: var(--c-text); line-height: 1.55; }

.region-strip { background: var(--c-bg-soft); border-radius: 4px; padding: 20px 24px; }
.region-h {
  font-family: var(--font-en); font-size: 11.5px; font-weight: 600;
  color: var(--c-head); letter-spacing: 0.15em; margin-bottom: 12px;
}
.region-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.region-tags span {
  font-size: 12.5px; color: var(--c-text);
  padding: 5px 13px; background: var(--c-bg);
  border: 1px solid var(--c-divider); border-radius: 2px;
}

/* ============================================================
   08. Performance Report — 실제 보고서 양식
   ============================================================ */
.section-report { background: linear-gradient(180deg, var(--c-bg-warm) 0%, var(--c-bg-soft) 100%); }

.report-paper {
  background: var(--c-bg);
  border: 1px solid var(--c-divider);
  box-shadow: 0 24px 48px color-mix(in srgb, var(--c-head) 10%, transparent),
              0 4px 8px color-mix(in srgb, var(--c-head) 5%, transparent);
  padding: 0;
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
  overflow: hidden;
}

.report-paper::before {
  content: ''; position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--c-red);
}

/* 보고서 헤더 */
.report-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 22px 36px 18px;
  border-bottom: 1px solid var(--c-divider);
}

.report-header-left { display: flex; align-items: center; gap: 22px; }

.report-logo {
  font-family: var(--font-en); font-size: 18px; font-weight: 800;
  color: var(--c-red); letter-spacing: 0.05em;
}

.report-doc-no {
  font-family: var(--font-en); font-size: 10.5px;
  color: var(--c-gray-lt); letter-spacing: 0.08em;
}

.report-header-right { display: flex; align-items: center; gap: 14px; }

.report-classify {
  font-family: var(--font-en); font-size: 10px; font-weight: 700;
  color: var(--c-bg); background: var(--c-head);
  padding: 4px 10px; border-radius: 1px;
  letter-spacing: 0.15em;
}

.report-rev {
  font-family: var(--font-en); font-size: 10.5px;
  color: var(--c-gray); letter-spacing: 0.05em;
}

/* 보고서 타이틀 바 */
.report-title-bar {
  padding: 28px 36px 22px;
  border-bottom: 1px solid var(--c-divider);
  background: linear-gradient(90deg, var(--c-red-lt) 0%, transparent 60%);
}

.report-title-no {
  font-family: var(--font-en); font-size: 11px; font-weight: 700;
  color: var(--c-red); letter-spacing: 0.22em; margin-bottom: 8px;
}

.report-title-h {
  font-size: 24px; font-weight: 700; color: var(--c-head);
  letter-spacing: -0.015em; margin-bottom: 6px;
}

.report-title-sub { font-size: 13px; color: var(--c-gray); }

/* 보고서 메타 그리드 */
.report-meta-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--c-divider);
}

.report-meta-item { padding: 14px 20px; border-right: 1px solid var(--c-divider); }
.report-meta-item:last-child { border-right: none; }

.rmi-key {
  font-family: var(--font-en); font-size: 9.5px; font-weight: 600;
  color: var(--c-gray); letter-spacing: 0.15em;
  margin-bottom: 4px; text-transform: uppercase;
}

.rmi-val { font-size: 12.5px; font-weight: 600; color: var(--c-head); line-height: 1.45; }

/* 보고서 본문 */
.report-body { padding: 24px 36px 28px; }

.report-section {
  display: flex; align-items: baseline; gap: 10px;
  margin: 18px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1.5px solid var(--c-head);
}

.rs-no {
  font-family: var(--font-en); font-size: 14px; font-weight: 700;
  color: var(--c-red);
}

.rs-title { font-size: 14.5px; font-weight: 700; color: var(--c-head); letter-spacing: -0.01em; }

.report-chart-wrap {
  background: var(--c-bg);
  border: 1px solid var(--c-divider);
  padding: 12px;
  margin-bottom: 8px;
}

.report-table {
  width: 100%; border-collapse: collapse;
  border: 1px solid var(--c-divider);
  margin-bottom: 8px;
}

.report-table tr { border-bottom: 1px solid var(--c-divider); }
.report-table tr:last-child { border-bottom: none; }

.rt-key {
  width: 200px; padding: 10px 16px;
  background: var(--c-bg-soft);
  font-size: 12px; color: var(--c-gray); font-weight: 500;
  border-right: 1px solid var(--c-divider);
}

.rt-val {
  padding: 10px 16px;
  font-size: 13px; color: var(--c-head); font-weight: 500;
}

.rt-em { color: var(--c-red); font-weight: 700; font-size: 14px; }

.report-conclusion {
  background: var(--c-bg-soft);
  border-left: 3px solid var(--c-red);
  padding: 16px 20px;
}

.report-conclusion p {
  font-size: 13px; color: var(--c-text);
  line-height: 1.75; margin-bottom: 10px;
}
.report-conclusion p:last-child { margin-bottom: 0; }
.report-conclusion p strong { color: var(--c-head); font-weight: 700; }

.rc-recommend {
  padding-top: 8px; border-top: 1px dashed var(--c-divider);
  margin-top: 10px !important;
}

/* 보고서 푸터 */
.report-footer {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 36px 20px;
  border-top: 1px solid var(--c-divider);
  background: var(--c-bg-soft);
}

.rf-sign { font-size: 11.5px; font-weight: 700; color: var(--c-head); }
.rf-by { font-family: var(--font-en); font-size: 10px; color: var(--c-gray-lt); margin-top: 3px; }

.rf-right { display: flex; align-items: center; gap: 16px; }

.rf-page { font-family: var(--font-en); font-size: 10.5px; color: var(--c-gray); letter-spacing: 0.1em; }

.rf-stamp {
  font-family: var(--font-en); font-size: 11px; font-weight: 800;
  color: var(--c-red); border: 1.5px solid var(--c-red);
  padding: 4px 12px; border-radius: 1px;
  letter-spacing: 0.18em; transform: rotate(-3deg);
  opacity: 0.7;
}

.sag-scatter { width: 100%; height: auto; max-height: 320px; }

#sagDots circle {
  opacity: 0; transform: scale(0);
  transform-origin: center; transform-box: fill-box;
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

#sagDots.in-view circle { opacity: 1; transform: scale(1); }
#sagDots.in-view circle:nth-child(1) { transition-delay: 0.05s; }
#sagDots.in-view circle:nth-child(2) { transition-delay: 0.12s; }
#sagDots.in-view circle:nth-child(3) { transition-delay: 0.18s; }
#sagDots.in-view circle:nth-child(4) { transition-delay: 0.24s; }
#sagDots.in-view circle:nth-child(5) { transition-delay: 0.30s; }
#sagDots.in-view circle:nth-child(6) { transition-delay: 0.36s; }
#sagDots.in-view circle:nth-child(7) { transition-delay: 0.42s; }
#sagDots.in-view circle:nth-child(8) { transition-delay: 0.48s; }
#sagDots.in-view circle:nth-child(9) { transition-delay: 0.54s; }
#sagDots.in-view circle:nth-child(10) { transition-delay: 0.60s; }
#sagDots.in-view circle:nth-child(11) { transition-delay: 0.66s; }
#sagDots.in-view circle:nth-child(12) { transition-delay: 0.72s; }
#sagDots.in-view circle:nth-child(13) { transition-delay: 0.78s; }
#sagDots.in-view circle:nth-child(14) { transition-delay: 0.84s; }
#sagDots.in-view circle:nth-child(15) { transition-delay: 0.90s; }
#sagDots.in-view circle:nth-child(16) { transition-delay: 0.96s; }
#sagDots.in-view circle:nth-child(17) { transition-delay: 1.02s; }
#sagDots.in-view circle:nth-child(18) { transition-delay: 1.08s; }
#sagDots.in-view circle:nth-child(19) { transition-delay: 1.14s; }
#sagDots.in-view circle:nth-child(20) { transition-delay: 1.20s; }
#sagDots.in-view circle:nth-child(21) { transition-delay: 1.26s; }

/* ============================================================
   09. EXECUTIVE QA
   ============================================================ */
.section-qa { background: var(--c-bg-soft); }

.qa-head { margin-bottom: 56px; max-width: 880px; }
.qa-head .section-no { letter-spacing: 0.22em; font-size: 11px; padding-bottom: 6px; margin-bottom: 18px; }
.qa-head .section-title { font-size: 36px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.3; }
.qa-head .section-sub { font-size: 15px; color: var(--c-gray); margin-top: 14px; max-width: 720px; line-height: 1.65; }

.qa-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.qa-card {
  background: var(--c-bg); border: 1px solid var(--c-divider);
  border-radius: 4px; padding: 38px 32px 34px;
  transition: border-color 0.4s, transform 0.4s;
}
.qa-card:hover { border-color: var(--c-head); }

.qa-tag {
  display: inline-block;
  font-family: var(--font-en); font-size: 11px; font-weight: 600;
  color: var(--c-red); letter-spacing: 0.2em;
  margin-bottom: 22px; padding-bottom: 6px;
  border-bottom: 1px solid var(--c-red);
}

.qa-q {
  font-size: 19px; font-weight: 700; color: var(--c-head);
  line-height: 1.45; margin-bottom: 18px;
  letter-spacing: -0.015em; min-height: 56px;
}

.qa-a {
  font-size: 14.5px; line-height: 1.85;
  color: var(--c-text); font-weight: 400;
}
.qa-a strong { color: var(--c-head); font-weight: 600; }

/* ============================================================
   10. Contact
   ============================================================ */
.section-contact { background: var(--c-bg); }
.contact-inner { width: 100%; }

.contact-head { text-align: center; margin-bottom: 36px; }
.contact-head .section-no { display: inline-block; margin-bottom: 14px; }

.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 32px; }

.contact-card {
  background: var(--c-bg); border: 1px solid var(--c-divider);
  border-radius: 4px; padding: 26px 22px;
  text-decoration: none; text-align: center; transition: all 0.4s;
}
.contact-card:hover { border-color: var(--c-red); transform: translateY(-4px); box-shadow: 0 12px 28px color-mix(in srgb, var(--c-red) 14%, transparent); }
.contact-card-yt:hover { border-color: #FF0000; box-shadow: 0 12px 28px color-mix(in srgb, #FF0000 22%, transparent); }
.contact-card-yt:hover .contact-tag { color: #FF0000; }

.contact-tag {
  font-family: var(--font-en); font-size: 11px; font-weight: 600;
  color: var(--c-red); letter-spacing: 0.18em; margin-bottom: 12px;
}
.contact-name { font-size: 17px; font-weight: 700; color: var(--c-head); margin-bottom: 8px; }
.contact-val { font-family: var(--font-en); font-size: 13px; color: var(--c-gray); word-break: break-all; }

.contact-footer { text-align: center; padding-top: 24px; border-top: 1px solid var(--c-divider); }
.cf-logo { width: 100px; margin: 0 auto 10px; }
.cf-line { font-family: var(--font-en); font-size: 12.5px; color: var(--c-text); margin-bottom: 8px; letter-spacing: 0.05em; }
.cf-meta { font-family: var(--font-ko); font-size: 11px; color: var(--c-gray-lt); }

/* ============================================================
   반응형 — 사이드바 자동 축소 + 섹션 fit-to-viewport (v6.18)
   ============================================================ */

/* 1440px 미만: 사이드바 표준 크기 유지하되 섹션 패딩 축소 */
@media (max-width: 1440px) {
  :root { --pad-x: 48px; }
  .section { padding: 48px var(--pad-x); }
  .section-title { font-size: 26px; }
  .hero-title { font-size: 56px; }
}

/* 1280px 미만: 사이드바 좁게 + 섹션 컴팩트 */
@media (max-width: 1280px) {
  :root { --sb-w: 190px; --pad-x: 36px; }
  .sidebar-brand { padding: 0 16px 12px; }
  .brand-logo { width: 84px; }
  .brand-tag { font-size: 9.5px; }
  .nav-item { padding: 5px 16px; font-size: 11.5px; min-height: 30px; gap: 8px; }
  .nav-no { font-size: 9.5px; min-width: 16px; }
  .section { padding: 36px var(--pad-x); }
  .section-title { font-size: 24px; }
  .hero-title { font-size: 48px; }
  .hero-tagline { font-size: 14.5px; }
}

/* 1024px 이하: 사이드바 드로어 (모바일/태블릿) */
@media (max-width: 1024px) {
  :root { --sb-w: 0px; --pad-x: 28px; }

  .sidebar { transform: translateX(-100%); transition: transform 0.3s; width: 280px; }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; scroll-snap-type: none; }
  .mobile-toggle { display: flex; }
  .progress-bar { left: 0; }

  .section { padding: 56px 28px; min-height: auto; scroll-snap-align: none; }

  .hero-title { font-size: 52px; }
  .section-title { font-size: 30px; }

  .kw-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-metrics, .how-metrics { grid-template-columns: repeat(2, 1fr); }
  .ind-table { grid-template-columns: repeat(3, 1fr); gap: 8px 0; }
  .ind-col { padding: 8px 12px 8px 0; }
  .about-layout, .need-row, .how-container, .viewer-layout {
    grid-template-columns: 1fr;
  }
  .need-impact { grid-template-columns: 1fr; }
  .qa-grid { grid-template-columns: 1fr; }
  .products-photo-grid, .cases-grid-compact, .network-grid, .contact-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid-compact { grid-template-columns: repeat(2, 1fr); }

  .report-meta-grid { grid-template-columns: repeat(2, 1fr); }
  .report-meta-item:nth-child(2n) { border-right: none; }
}

@media (max-width: 600px) {
  .hero-title { font-size: 44px; }
  .section { padding: 40px 18px; }
  .kw-grid { grid-template-columns: 1fr; }
  .hero-metrics { grid-template-columns: 1fr; gap: 12px; }
  .contact-grid { grid-template-columns: 1fr; }
  .ind-table { grid-template-columns: repeat(2, 1fr); }
  .ind-col-num { font-size: 17px; }
  .cases-grid-compact { grid-template-columns: 1fr; }
  .mc-name { font-size: 14px; }
  .mc-name-em { font-size: 18px; }
  .report-header, .report-title-bar, .report-body, .report-footer { padding-left: 18px; padding-right: 18px; }
}

/* ============================================================
   v6 추가 — News card / Cost visual / Cert marks / Modal / SCADA
   ============================================================ */

/* WHY — 산업 사고 헤드라인 카드 */
.news-badge {
  display: inline-block;
  font-family: var(--font-en); font-size: 10.5px; font-weight: 700;
  color: var(--c-red); letter-spacing: 0.18em;
  margin-bottom: 14px; padding: 5px 12px;
  border: 1px solid var(--c-red); border-radius: 2px;
}

.news-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 10px; margin-bottom: 16px;
}

.news-card {
  background: var(--c-bg);
  border: 1px solid var(--c-divider);
  border-left: 3px solid var(--c-gray-lt);
  border-radius: 3px;
  padding: 16px 18px;
  transition: all 0.3s;
}
.news-card:hover {
  border-left-color: var(--c-red);
  transform: translateX(2px);
  box-shadow: 0 4px 14px color-mix(in srgb, var(--c-head) 6%, transparent);
}
.news-card-em {
  background: var(--c-dark); color: var(--c-bg);
  border-left-color: var(--c-red);
}

.news-source {
  font-family: var(--font-en); font-size: 10px; font-weight: 700;
  color: var(--c-gray); letter-spacing: 0.1em; margin-bottom: 8px;
}
.news-card-em .news-source { color: var(--c-red); }

.news-title {
  font-size: 14.5px; font-weight: 700;
  color: var(--c-head); line-height: 1.45;
  margin-bottom: 8px;
}
.news-card-em .news-title { color: var(--c-bg); }

.news-meta { font-size: 11.5px; color: var(--c-gray); line-height: 1.5; }
.news-card-em .news-meta { color: var(--c-gray-xl); }

.news-disclaimer {
  font-size: 10.5px; color: var(--c-gray-lt);
  font-style: italic; text-align: right;
  padding-top: 8px; border-top: 1px dashed var(--c-divider);
}

/* WHY — 비용 시각화 */
.cost-visual {
  display: grid; grid-template-columns: 1fr 1.3fr 1fr;
  gap: 14px; margin-bottom: 32px;
}

.cost-card {
  background: var(--c-bg); border: 1px solid var(--c-divider);
  border-radius: 4px; padding: 24px 26px;
  transition: all 0.3s;
}
.cost-card:hover { border-color: var(--c-red); }

.cost-card-em { background: var(--c-dark); color: var(--c-bg); border-color: var(--c-dark); }

.cost-tag {
  font-family: var(--font-en); font-size: 10.5px; font-weight: 700;
  color: var(--c-red); letter-spacing: 0.15em; margin-bottom: 10px;
}
.cost-card-em .cost-tag { color: #fbbf24; }

.cost-num {
  font-size: 32px; font-weight: 800; color: var(--c-head);
  line-height: 1.05; margin-bottom: 8px; letter-spacing: -0.025em;
}
.cost-card-em .cost-num { color: var(--c-bg); }
.cost-num span { font-size: 16px; font-weight: 500; color: var(--c-gray); margin-left: 4px; }
.cost-card-em .cost-num span { color: var(--c-gray-xl); }

.cost-label { font-size: 13px; color: var(--c-gray); margin-bottom: 12px; line-height: 1.5; }
.cost-card-em .cost-label { color: var(--c-gray-xl); }

.cost-bar {
  height: 4px; background: var(--c-bg-soft);
  border-radius: 2px; overflow: hidden;
}
.cost-card-em .cost-bar { background: rgba(255,255,255,0.1); }

.cost-bar-fill {
  height: 100%; width: 0;
  background: var(--c-red); border-radius: 2px;
  transition: width 1.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.cost-visual.in-view .cost-bar-fill { width: var(--w); }

/* PRODUCTS — 인증 마크 강화 */
.cert-marks-block {
  background: var(--c-bg);
  border: 1px solid var(--c-divider);
  border-radius: 4px;
  padding: 24px 28px;
  margin-bottom: 12px;
}

.cert-marks-head { margin-bottom: 18px; }
.cert-marks-title {
  font-family: var(--font-en); font-size: 11.5px; font-weight: 700;
  color: var(--c-head); letter-spacing: 0.18em; margin-bottom: 4px;
}
.cert-marks-sub { font-size: 12px; color: var(--c-gray); }

.cert-marks-grid {
  display: grid; grid-template-columns: repeat(6, 1fr);
  gap: 10px; margin-bottom: 16px;
}

.cert-mark-card {
  background: var(--c-bg-soft);
  border: 1px solid var(--c-divider);
  border-radius: 3px;
  padding: 14px 8px;
  text-align: center;
  transition: all 0.3s;
}
.cert-mark-card:hover { border-color: var(--c-head); transform: translateY(-2px); }

.cert-mark-card-rel {
  background: var(--c-bg);
  border-style: dashed;
  opacity: 0.85;
}

.cert-mark-svg {
  display: flex; justify-content: center; align-items: center;
  height: 50px; margin-bottom: 8px;
}

.cert-mark-name {
  font-family: var(--font-en); font-size: 12px; font-weight: 700;
  color: var(--c-head); margin-bottom: 3px;
  letter-spacing: 0.02em;
}

.cert-mark-desc { font-size: 10.5px; color: var(--c-gray); line-height: 1.3; }

.cert-marks-foot {
  font-size: 11.5px; color: var(--c-text);
  padding-top: 12px; border-top: 1px solid var(--c-divider);
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  line-height: 1.6;
}

.cert-foot-tag {
  font-family: var(--font-en); font-size: 9.5px; font-weight: 700;
  color: var(--c-red); background: var(--c-red-lt);
  padding: 3px 8px; border-radius: 2px; letter-spacing: 0.08em;
}
.cert-foot-tag-rel { color: var(--c-gray); background: var(--c-bg-soft); }

.cert-foot-divider { color: var(--c-gray-lt); }

/* SAG-VIEWER — Action Button + Modals */
.screen-action-btn {
  margin-left: auto;
  display: inline-flex; align-items: center; gap: 5px;
  background: #22d3ee; color: #0f172a;
  border: none; padding: 4px 10px;
  border-radius: 3px;
  font-family: var(--font-en); font-size: 10.5px; font-weight: 700;
  letter-spacing: 0.05em; cursor: pointer;
  transition: all 0.2s;
}
.screen-action-btn:hover { background: #67e8f9; transform: translateY(-1px); }

/* Modal */
.vf-modal {
  position: fixed; inset: 0;
  display: none; align-items: center; justify-content: center;
  z-index: 1000;
}
.vf-modal.open { display: flex; }

.vf-modal-bg {
  position: absolute; inset: 0;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(4px);
  cursor: pointer;
}

.vf-modal-frame {
  position: relative;
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 8px;
  width: 90%; max-width: 880px;
  max-height: 90vh; overflow-y: auto;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
  animation: modalIn 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(20px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.vf-modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px;
  background: #1e293b;
  border-bottom: 1px solid #334155;
  border-radius: 8px 8px 0 0;
}

.vf-modal-title {
  font-family: var(--font-en); font-size: 12.5px; font-weight: 700;
  color: #22d3ee; letter-spacing: 0.08em;
}

.vf-modal-close {
  background: transparent; border: 1px solid #475569;
  color: #cbd5e1; width: 28px; height: 28px;
  border-radius: 3px; font-size: 16px; cursor: pointer;
  transition: all 0.2s;
}
.vf-modal-close:hover { background: #dc2626; color: #fff; border-color: #dc2626; }

.vf-modal-body { padding: 22px 26px; color: #cbd5e1; }

.vf-modal-meta {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 8px 16px;
  background: #1e293b;
  padding: 14px 18px;
  border-radius: 4px;
  margin-bottom: 16px;
  font-size: 12px;
}
.vf-modal-meta strong { color: #94a3b8; font-weight: 600; margin-right: 6px; }

.vf-modal-chart { background: #1e293b; padding: 14px; border-radius: 4px; margin-bottom: 14px; }

.vf-modal-finding {
  background: rgba(34, 211, 238, 0.08);
  border-left: 3px solid #22d3ee;
  padding: 12px 16px; border-radius: 2px;
  font-size: 12.5px; color: #cbd5e1; line-height: 1.6;
}
.vf-modal-finding strong { color: #22d3ee; }

.vf-modal-actions {
  display: flex; gap: 10px; margin-bottom: 14px;
}

.vf-export-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: #22d3ee; color: #0f172a;
  border: none; padding: 9px 18px;
  border-radius: 3px;
  font-family: var(--font-ko); font-size: 12.5px; font-weight: 700;
  cursor: pointer; transition: all 0.2s;
}
.vf-export-btn:hover { background: #67e8f9; transform: translateY(-1px); }
.vf-export-btn-secondary { background: transparent; color: #22d3ee; border: 1px solid #22d3ee; }
.vf-export-btn-secondary:hover { background: rgba(34,211,238,0.12); }

.event-graph-svg, .report-graph-svg { width: 100%; height: auto; }

/* SCADA 화면 (Sag-VIEWER 메뉴 5) */
.scada-screen-content {
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 4px;
  overflow: hidden;
}
.scada-svg { width: 100%; height: auto; display: block; }

/* 반응형 */
@media (max-width: 1024px) {
  .news-grid, .cost-visual { grid-template-columns: 1fr; }
  .cert-marks-grid { grid-template-columns: repeat(3, 1fr); }
  .vf-modal-meta { grid-template-columns: 1fr; }
  .vf-modal-actions { flex-direction: column; }
}

@media (max-width: 600px) {
  .cert-marks-grid { grid-template-columns: repeat(2, 1fr); }
  .vf-modal-frame { width: 95%; max-height: 95vh; }
  .vf-modal-body { padding: 14px 16px; }
}

/* ============================================================
   v6.1 — Loss split / 5-stage toggle / Flags / Refined certs
   ============================================================ */

/* 손실 구조 — 직접 vs 간접 */
.loss-split {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 18px;
  align-items: stretch;
}

.loss-col {
  background: var(--c-bg);
  border: 1px solid var(--c-divider);
  border-radius: 4px;
  padding: 24px 26px;
  display: flex; flex-direction: column;
  transition: all 0.3s;
}

.loss-col-direct { border-top: 3px solid var(--c-red); }
.loss-col-indirect { border-top: 3px solid var(--c-head); }

.loss-col:hover { transform: translateY(-3px); box-shadow: 0 10px 24px color-mix(in srgb, var(--c-head) 8%, transparent); }

.loss-col-head { margin-bottom: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--c-divider); }

.loss-col-tag {
  display: inline-block;
  font-family: var(--font-en); font-size: 10px; font-weight: 700;
  color: var(--c-red); letter-spacing: 0.18em;
  margin-bottom: 8px;
}

.loss-col-indirect .loss-col-tag { color: var(--c-head); }

.loss-col-title {
  font-size: 22px; font-weight: 700;
  color: var(--c-head); margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.loss-col-desc { font-size: 13px; color: var(--c-gray); line-height: 1.5; }

.loss-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }

.loss-list li {
  display: flex; align-items: center; gap: 14px;
  padding: 10px 12px;
  background: var(--c-bg-soft);
  border-radius: 3px;
  transition: all 0.25s;
}

.loss-col-direct .loss-list li:hover {
  background: var(--c-red-lt);
  transform: translateX(3px);
}
.loss-col-indirect .loss-list li:hover {
  background: var(--c-bg-warm);
  transform: translateX(3px);
}

.loss-num {
  font-family: var(--font-en); font-size: 11px; font-weight: 700;
  color: var(--c-red); letter-spacing: 0.05em;
  background: var(--c-bg);
  padding: 4px 8px; border-radius: 2px;
  flex-shrink: 0;
}
.loss-col-indirect .loss-num { color: var(--c-head); }

.loss-text { font-size: 14px; font-weight: 600; color: var(--c-head); }

.loss-vs {
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-en); font-size: 14px; font-weight: 700;
  color: var(--c-gray-lt); letter-spacing: 0.18em;
  min-width: 32px;
}

/* 5단계 토글 */
.how-toggle-5 {
  flex-wrap: wrap;
}
.how-toggle-5 .toggle-btn {
  padding: 8px 14px; font-size: 11.5px;
}

/* 인증 마크 — 4개 그리드 (실제 보유만) */
.cert-marks-grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1024px) { .cert-marks-grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .cert-marks-grid-4 { grid-template-columns: repeat(2, 1fr); } }

.cert-mark-card { padding: 16px 12px; }

/* 글로벌 네트워크 — 국기 */
.region-tags span {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 14px;
}

.flag {
  font-style: normal;
  font-size: 14px;
  line-height: 1;
}

/* 1024 반응형 추가 */
@media (max-width: 1024px) {
  .loss-split { grid-template-columns: 1fr; }
  .loss-vs { transform: rotate(90deg); margin: 4px auto; }
  .how-toggle-5 .toggle-btn { padding: 7px 10px; font-size: 11px; }
}

/* ============================================================
   v6.4 — Flag images + Light REPORT Modal (페이지 톤)
   ============================================================ */

/* 국기 이미지 */
.flag-img {
  width: 22px;
  height: 14px;
  object-fit: cover;
  display: inline-block;
  vertical-align: middle;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.08);
  flex-shrink: 0;
}

.region-tags span img.flag-img {
  margin-right: 2px;
}

/* REPORT 모달 — Light 테마 (페이지 톤 통일) */
.vf-modal-frame-light {
  background: var(--c-bg) !important;
  border: 1px solid var(--c-divider) !important;
  box-shadow: 0 24px 60px rgba(44, 41, 36, 0.25) !important;
}

.vf-modal-header-light {
  background: var(--c-bg-soft) !important;
  border-bottom: 1px solid var(--c-divider) !important;
}

.vf-modal-frame-light .vf-modal-title {
  color: var(--c-red) !important;
  font-weight: 700;
}

.vf-modal-close-light {
  background: transparent !important;
  border: 1px solid var(--c-divider) !important;
  color: var(--c-gray) !important;
}

.vf-modal-close-light:hover {
  background: var(--c-red) !important;
  color: var(--c-bg) !important;
  border-color: var(--c-red) !important;
}

.vf-modal-body-light {
  color: var(--c-text) !important;
  background: var(--c-bg) !important;
}

.vf-modal-meta-light {
  background: var(--c-bg-soft) !important;
  color: var(--c-text) !important;
}

.vf-modal-meta-light strong {
  color: var(--c-gray) !important;
}

.vf-modal-chart-light {
  background: var(--c-bg) !important;
  border: 1px solid var(--c-divider) !important;
}

.vf-modal-finding-light {
  background: var(--c-red-lt) !important;
  border-left: 3px solid var(--c-red) !important;
  color: var(--c-text) !important;
}

.vf-modal-finding-light strong {
  color: var(--c-red) !important;
}

.vf-export-btn-light {
  background: var(--c-red) !important;
  color: var(--c-bg) !important;
}

.vf-export-btn-light:hover {
  background: var(--c-red-dk) !important;
}

.vf-export-btn-secondary-light {
  background: transparent !important;
  color: var(--c-red) !important;
  border: 1px solid var(--c-red) !important;
}

.vf-export-btn-secondary-light:hover {
  background: var(--c-red-lt) !important;
}

/* ============================================================
   v6.5 — 자동 시퀀스 + 진행 바 + Play 버튼
   ============================================================ */

.how-controls {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap;
  margin-bottom: 14px;
}

.play-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--c-head); color: var(--c-bg);
  border: none; padding: 9px 18px;
  border-radius: 4px;
  font-family: var(--font-ko); font-size: 12.5px; font-weight: 700;
  cursor: pointer; transition: all 0.25s;
  letter-spacing: 0.02em;
}

.play-btn:hover {
  background: var(--c-red);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px color-mix(in srgb, var(--c-red) 30%, transparent);
}

.play-btn.playing {
  background: var(--c-red);
  animation: playPulse 1.5s ease-in-out infinite;
}

@keyframes playPulse {
  0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--c-red) 50%, transparent); }
  50% { box-shadow: 0 0 0 8px color-mix(in srgb, var(--c-red) 0%, transparent); }
}

.play-btn svg { transition: transform 0.3s; }
.play-btn.playing svg {
  /* Play 아이콘 → Stop 사각형으로 보이게 (동그란 테두리로) */
  transform: scale(0.85);
}

/* 진행 바 */
.seq-progress {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--c-bg-soft);
  padding: 14px 22px;
  border-radius: 4px;
  margin-bottom: 14px;
  gap: 6px;
}

.seq-progress-step {
  display: flex; flex-direction: column; align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all 0.3s;
  flex-shrink: 0;
  min-width: 70px;
}

.seq-dot {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--c-bg);
  border: 2px solid var(--c-divider);
  transition: all 0.4s ease;
  position: relative;
}

.seq-progress-step.done .seq-dot {
  background: var(--c-gray-lt);
  border-color: var(--c-gray-lt);
}

.seq-progress-step.active .seq-dot {
  background: var(--c-red);
  border-color: var(--c-red);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--c-red) 20%, transparent);
  animation: dotPulse 1.4s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 0 4px color-mix(in srgb, var(--c-red) 20%, transparent); }
  50% { box-shadow: 0 0 0 8px color-mix(in srgb, var(--c-red) 5%, transparent); }
}

.seq-label {
  font-family: var(--font-en); font-size: 9.5px; font-weight: 700;
  color: var(--c-gray); letter-spacing: 0.1em;
  transition: color 0.3s;
}

.seq-progress-step.done .seq-label { color: var(--c-gray-lt); }
.seq-progress-step.active .seq-label { color: var(--c-red); }

.seq-progress-line {
  flex: 1;
  height: 1.5px;
  background: var(--c-divider);
  min-width: 12px;
  transition: background 0.3s;
}

@media (max-width: 1024px) {
  .seq-progress { padding: 10px 14px; gap: 4px; }
  .seq-progress-step { min-width: 50px; }
  .seq-label { font-size: 8.5px; }
}

@media (max-width: 600px) {
  .seq-progress { overflow-x: auto; padding: 8px 10px; }
  .seq-label { display: none; }
  .how-controls { flex-direction: column; align-items: stretch; }
  .play-btn { justify-content: center; }
}

/* ============================================================
   v6.6 — 상태 인디케이터 숨김 + 인증 마크 SVG + 화살표
   ============================================================ */

/* 상단 상태 인디케이터 (중복 — 진행 바와 토글 버튼이 이미 있음) */
#statusIndicator { display: none; }

/* 인증 마크 SVG 이미지 */
.cert-mark-img {
  max-width: 90px;
  max-height: 50px;
  object-fit: contain;
  display: block;
  margin: 0 auto;
}

.cert-section-label {
  display: flex; align-items: center; gap: 12px;
  margin: 14px 0 10px;
}

.cert-section-label-mt { margin-top: 22px; }

.cert-section-tag {
  font-family: var(--font-en); font-size: 10px; font-weight: 700;
  color: var(--c-gray); background: var(--c-bg-soft);
  padding: 4px 10px; border-radius: 2px; letter-spacing: 0.12em;
}

.cert-section-tag-em {
  color: var(--c-bg); background: var(--c-red);
}

.cert-section-text {
  font-size: 12px; color: var(--c-text); font-weight: 600;
}

.cert-marks-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

@media (max-width: 1024px) {
  .cert-marks-grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .cert-marks-grid-3 { grid-template-columns: repeat(2, 1fr); }
}

/* SEMI 마크 옆 F47 / S2 배지 */
.cert-mark-svg { position: relative; }

.cert-mark-badge {
  position: absolute;
  bottom: -2px; right: 6px;
  background: #dc2626; color: #fff;
  font-family: var(--font-en); font-size: 10px; font-weight: 800;
  padding: 2px 7px; border-radius: 2px;
  letter-spacing: 0.05em;
}

/* ============================================================
   v6.7 — 실제 인증서 썸네일 + SOC/랜드마크
   ============================================================ */

/* 인증서 썸네일 카드 */
.cert-doc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.cert-doc-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.cert-doc-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.cert-doc-grid-5 {
  grid-template-columns: repeat(5, 1fr);
}

/* ============================================================
   보호 방식 — scheme-block (v6.15)
   비전공자 3초 이해 · 카드 높이 동일 · 브랜드 톤 (삼성/ABB/Schneider)
   ============================================================ */
.scheme-block {
  margin: 56px 0 40px;
  padding: 0;
  background: transparent;
  border: none;
}

.scheme-head {
  text-align: center;
  margin-bottom: 36px;
}

.scheme-eyebrow {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  color: var(--c-red);
  letter-spacing: 0.22em;
  margin-bottom: 12px;
}

.scheme-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--c-head);
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.scheme-sub {
  font-size: 15px;
  color: var(--c-gray);
  margin-top: 10px;
  line-height: 1.55;
}

/* 2열 카드 (동일 높이) */
.scheme-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  align-items: stretch;
}

.scheme-card {
  background: var(--c-bg);
  border: 1px solid var(--c-divider);
  border-radius: 10px;
  padding: 36px 32px 32px;
  display: flex;
  flex-direction: column;
  min-width: 0;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
}

.scheme-card:hover {
  border-color: var(--c-red);
  box-shadow: 0 12px 36px color-mix(in srgb, var(--c-head) 8%, transparent);
  transform: translateY(-2px);
}

.scheme-card-b:hover { border-color: #5B7AA8; }

/* 헤더 */
.scheme-card-head {
  margin-bottom: 24px;
}

.scheme-tag {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 0.18em;
  padding: 5px 11px;
  border-radius: 3px;
  margin-bottom: 14px;
}

.scheme-tag-a {
  color: var(--c-bg);
  background: var(--c-red);
}

.scheme-tag-b {
  color: var(--c-bg);
  background: #5B7AA8;
}

.scheme-card-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--c-head);
  margin: 0 0 8px;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.scheme-card-sub {
  font-size: 15px;
  color: var(--c-gray);
  margin: 0;
  line-height: 1.5;
}

/* 비주얼 */
.scheme-visual {
  margin: 0 0 28px;
  padding: 16px 12px;
  background: var(--c-bg-soft);
  border-radius: 6px;
}

.scheme-svg {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
}

/* 핵심 포인트 (체크) */
.scheme-points {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}

.scheme-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 0;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--c-head);
  line-height: 1.4;
}

.sp-check {
  flex-shrink: 0;
  color: var(--c-red);
}

.scheme-card-b .sp-check { color: #5B7AA8; }

/* 적용 예시 chips */
.scheme-examples {
  margin-bottom: 22px;
  padding-top: 20px;
  border-top: 1px dashed var(--c-divider);
}

.scheme-examples-label {
  font-family: var(--font-en);
  font-size: 10.5px;
  font-weight: 700;
  color: var(--c-gray);
  letter-spacing: 0.16em;
  margin-bottom: 10px;
}

.scheme-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.scheme-chip {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--c-text);
  background: var(--c-bg-soft);
  border: 1px solid var(--c-divider);
  padding: 6px 12px;
  border-radius: 100px;
  line-height: 1.3;
}

/* 추천 환경 박스 (하단 고정) */
.scheme-fit {
  margin-top: auto; /* 카드 높이 동일화 핵심 */
  padding: 20px 22px;
  border-radius: 8px;
  background: var(--c-bg-soft);
  border-left: 3px solid var(--c-red);
}

.scheme-fit-b {
  border-left-color: #5B7AA8;
}

.scheme-fit-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-head);
  margin-bottom: 10px;
  letter-spacing: -0.005em;
}

.scheme-fit-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.scheme-fit-list li {
  position: relative;
  padding: 5px 0 5px 18px;
  font-size: 13.5px;
  color: var(--c-text);
  line-height: 1.5;
}

.scheme-fit-list li::before {
  content: "✔";
  position: absolute;
  left: 0; top: 5px;
  font-size: 11px;
  font-weight: 700;
  color: var(--c-red);
}

.scheme-fit-b .scheme-fit-list li::before { color: #5B7AA8; }

/* === 반응형 === */
@media (max-width: 1024px) {
  .scheme-card { padding: 28px 24px 24px; }
  .scheme-card-title { font-size: 22px; }
  .scheme-title { font-size: 24px; }
}

@media (max-width: 768px) {
  .scheme-block { margin: 40px 0 28px; }
  .scheme-grid { grid-template-columns: 1fr; gap: 16px; }
  .scheme-head { margin-bottom: 24px; }
  .scheme-title { font-size: 21px; }
  .scheme-sub { font-size: 13.5px; }
  .scheme-card { padding: 24px 20px 22px; }
  .scheme-card-title { font-size: 20px; }
  .scheme-card-sub { font-size: 13.5px; }
  .scheme-points li { font-size: 13.5px; }
}

@media (max-width: 480px) {
  .scheme-card { padding: 22px 18px 20px; }
  .scheme-card-title { font-size: 19px; }
  .scheme-fit { padding: 16px 18px; }
}

/* 대응 규격 (보유 안 한 표준) — 텍스트 칩 */
.cert-spec-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.cert-spec-chip {
  background: var(--c-bg-soft);
  border: 1px solid var(--c-divider);
  border-radius: 4px;
  padding: 14px 18px;
  text-align: center;
  transition: all 0.3s;
}

.cert-spec-chip:hover {
  border-color: var(--c-red);
  background: var(--c-bg);
}

.cert-spec-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-head);
  font-family: var(--font-en);
  letter-spacing: 0.04em;
}

.cert-spec-desc {
  font-size: 11.5px;
  color: var(--c-gray);
  margin-top: 4px;
}

@media (max-width: 760px) {
  .cert-spec-row { grid-template-columns: 1fr; }
}

.cert-doc-card {
  background: var(--c-bg);
  border: 1px solid var(--c-divider);
  border-radius: 4px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: all 0.3s;
}

.cert-doc-card:hover {
  border-color: var(--c-red);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--c-head) 8%, transparent);
}

.cert-doc-card-rel {
  border-style: dashed;
  opacity: 0.92;
}

.cert-doc-thumb {
  background: #fff;
  border: 1px solid var(--c-divider);
  border-radius: 3px;
  padding: 6px;
  margin-bottom: 12px;
  width: 100%;
  height: 130px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.cert-doc-thumb img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.cert-doc-thumb-mark {
  background: var(--c-bg-soft);
}

.cert-doc-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-head);
  margin-bottom: 5px;
}

.cert-doc-desc {
  font-size: 11.5px;
  color: var(--c-gray);
  line-height: 1.4;
}

/* SOC + 랜드마크 */
.soc-landmark {
  background: linear-gradient(135deg, var(--c-bg) 0%, var(--c-bg-soft) 100%);
  border: 1px solid var(--c-divider);
  border-left: 4px solid var(--c-red);
  border-radius: 4px;
  padding: 28px 32px;
  margin-top: 28px;
}

.soc-landmark-head { margin-bottom: 22px; }

.soc-tag {
  display: inline-block;
  font-family: var(--font-en); font-size: 10.5px; font-weight: 700;
  color: var(--c-red); letter-spacing: 0.18em;
  margin-bottom: 10px; padding: 4px 12px;
  background: var(--c-red-lt); border-radius: 2px;
}

.soc-title {
  font-size: 22px; font-weight: 700;
  color: var(--c-head);
  margin-bottom: 6px;
  letter-spacing: -0.015em;
}

.soc-sub {
  font-size: 14px; color: var(--c-gray); line-height: 1.6;
}

.soc-sub strong { color: var(--c-head); font-weight: 700; }

.soc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}

.soc-card {
  background: var(--c-bg);
  border: 1px solid var(--c-divider);
  border-radius: 4px;
  padding: 22px 20px;
  transition: all 0.3s;
  text-align: left;
}

.soc-card:hover {
  border-color: var(--c-red);
  transform: translateY(-3px);
  box-shadow: 0 10px 24px color-mix(in srgb, var(--c-head) 8%, transparent);
}

.soc-card-icon {
  font-size: 28px;
  margin-bottom: 14px;
  display: block;
  filter: grayscale(0.2);
}

.soc-card-tag {
  font-family: var(--font-en); font-size: 9.5px; font-weight: 700;
  color: var(--c-red); letter-spacing: 0.12em;
  margin-bottom: 8px; text-transform: uppercase;
}

.soc-card-name {
  font-size: 17px; font-weight: 700;
  color: var(--c-head); margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.soc-card-desc {
  font-size: 12.5px; color: var(--c-text); line-height: 1.6;
}

.soc-foot {
  font-size: 13px;
  color: var(--c-text);
  line-height: 1.7;
  padding: 14px 18px;
  background: var(--c-bg);
  border-radius: 3px;
  border-left: 2px solid var(--c-red);
}

.soc-foot strong { color: var(--c-red); font-weight: 700; }

/* 반응형 */
@media (max-width: 1024px) {
  .cert-doc-grid, .soc-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-doc-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .cert-doc-grid-5 { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 600px) {
  .cert-doc-grid, .soc-grid, .cert-doc-grid-3 { grid-template-columns: 1fr; }
  .cert-doc-grid-5 { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   📱 MOBILE OPTIMIZATION PASS — 통합 반응형 (768 / 480)
   ============================================================ */

/* === 태블릿~큰 모바일 (≤ 768px) === */
@media (max-width: 768px) {
  /* 타이포 자연 스케일 */
  body { font-size: 15px; line-height: 1.65; }
  .hero-title { font-size: 38px; line-height: 1.2; }
  .hero-tagline { font-size: 16px; }
  .section-title { font-size: 26px; line-height: 1.25; }
  .section-sub { font-size: 14px; }
  .section-no { font-size: 11px; }

  /* 섹션 padding 조정 */
  .section { padding: 44px 22px 38px; gap: 0; }
  .section-head { margin-bottom: 24px; }

  /* Hero 메트릭 줄바꿈 + 사이즈 */
  .hero-metrics { gap: 14px; }
  .hero-tag { font-size: 11px; }

  /* 작동원리 — 5단계 토글 가로 스크롤 */
  .how-toggle-5 {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
  }
  .how-toggle-5::-webkit-scrollbar { display: none; }
  .how-toggle-5 .toggle-btn {
    flex-shrink: 0;
    padding: 9px 14px;
    font-size: 12px;
    min-height: 36px;
  }
  .play-btn { width: 100%; justify-content: center; min-height: 38px; }
  .how-controls { flex-direction: column; gap: 10px; align-items: stretch; }

  /* 시간축 타임라인 */
  .seq-timeline { padding: 14px 6px 8px; }
  .seq-marker { width: 24px; height: 24px; font-size: 11px; }
  .seq-name { font-size: 10.5px; }
  .seq-time { font-size: 9.5px; letter-spacing: 0; }
  .seq-track { top: 26px; left: 14%; right: 14%; }

  /* 부하 운전 배지 */
  .load-running-badge {
    font-size: 12px;
    padding: 10px 14px;
  }

  /* 작동원리 SVG — 가로 스크롤 허용 (squish 방지) */
  .how-stage { overflow-x: auto; padding: 12px; }
  .how-svg { min-width: 100%; }

  /* 모달 풀스크린 가까이 */
  .vf-modal-frame, .vf-modal-frame-light {
    width: 100%;
    max-width: 100%;
    max-height: 100vh;
    height: 100vh;
    border-radius: 0;
    margin: 0;
  }
  .vf-modal-header, .vf-modal-header-light { padding: 14px 16px; }
  .vf-modal-title { font-size: 13px; line-height: 1.3; }
  .vf-modal-body, .vf-modal-body-light { padding: 14px 16px; }
  .vf-modal-meta, .vf-modal-meta-light { grid-template-columns: 1fr; gap: 6px; font-size: 12px; }
  .vf-modal-chart, .vf-modal-chart-light { padding: 10px 6px; overflow-x: auto; }
  .report-graph-svg { min-width: 600px; }
  .vf-modal-actions { flex-direction: column; gap: 8px; }
  .vf-export-btn { width: 100%; justify-content: center; min-height: 42px; }
  .vf-modal-finding, .vf-modal-finding-light { font-size: 12.5px; }

  /* 사이드바 모바일 — 햄버거 메뉴 누를 때 배경 어둡게 */
  .sidebar.open ~ .main::before {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(20, 18, 15, 0.45);
    z-index: 50;
  }

  /* 카드/그리드 spacing 조정 */
  .kw-grid, .hero-metrics, .how-metrics { gap: 10px; }

  /* 인증 카드 thumbnail 모바일에서 좀 더 작게 */
  .cert-doc-thumb { padding: 8px; }
  .cert-doc-thumb img { max-height: 90px; }

  /* SOC/적용사례 */
  .soc-card { padding: 12px 14px; font-size: 12.5px; }
  .mc-name { font-size: 13px; }
  .mc-name-em { font-size: 16px; }

  /* 글로벌 네트워크 국기 */
  .region-tags span { padding: 6px 10px; font-size: 12px; }

  /* QA 카드 */
  .qa-card { padding: 16px 18px; }
  .qa-q { font-size: 15px; }
  .qa-a { font-size: 13px; }

  /* 푸터 contact */
  .contact-grid { gap: 12px; }
}

/* === 작은 모바일 (≤ 480px) — iPhone SE 등 === */
@media (max-width: 480px) {
  .section { padding: 36px 16px 32px; }
  .hero-title { font-size: 32px; }
  .hero-tagline { font-size: 14.5px; }
  .section-title { font-size: 22px; }
  .section-sub { font-size: 13px; }

  /* 매트릭 숫자 단순화 */
  .hm-num { font-size: 24px; }
  .hm-label { font-size: 11.5px; }

  /* 비용 시각화 */
  .cost-visual { gap: 14px; }
  .cv-card { padding: 14px 12px; }

  /* 인증 단일 컬럼 */
  .cert-doc-grid, .cert-doc-grid-3, .cert-doc-grid-4, .cert-doc-grid-5 {
    grid-template-columns: 1fr;
  }

  /* 대응 규격 칩 단일 컬럼 */
  .cert-spec-row { grid-template-columns: 1fr; gap: 8px; }
  .cert-spec-chip { padding: 11px 14px; }

  /* SOC/사례 카드 */
  .soc-grid { gap: 8px; }

  /* 작동원리 SVG 더 작게 (가로 스크롤 유지) */
  .how-svg { min-width: 580px; }

  /* 시간축 글자 매우 작게 */
  .seq-marker { width: 22px; height: 22px; font-size: 10px; }
  .seq-name { font-size: 9.5px; }
  .seq-time { font-size: 8.5px; }

  /* 모바일 토글 버튼 안전 영역 */
  .mobile-toggle { width: 44px; height: 44px; }

  /* nav 아이템 터치 타겟 */
  .nav-item { padding: 12px 22px; min-height: 44px; }
}

/* ============================================================
   ★ INDUSTRIES — 적용 산업 섹션 (v6.16)
   ============================================================ */
.section-industries {
  padding: 96px var(--pad-x);
  background: var(--c-bg);
}
.industries-inner { max-width: var(--max-w); margin: 0 auto; }
.industries-head { margin-bottom: 52px; }
.industries-title {
  font-size: 38px;
  font-weight: 700;
  color: var(--c-head);
  line-height: 1.2;
  letter-spacing: -0.025em;
  margin-bottom: 14px;
}
.industries-sub {
  font-size: 16.5px;
  color: var(--c-sub);
  line-height: 1.65;
  max-width: 680px;
}
.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.ind-card {
  background: var(--c-bg);
  border: 1px solid var(--c-divider);
  border-radius: 5px;
  padding: 32px 30px 28px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.22, 0.61, 0.36, 1),
              box-shadow 0.3s ease,
              border-color 0.3s ease;
  min-width: 0;
}
.ind-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px color-mix(in srgb, var(--c-head) 8%, transparent);
  border-color: color-mix(in srgb, var(--c-red) 35%, var(--c-divider));
}
.ind-card:hover .ind-icon-wrap {
  background: var(--c-red-tint);
  border-color: color-mix(in srgb, var(--c-red) 30%, transparent);
  color: var(--c-red);
}
.ind-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--c-red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.ind-card:hover::before { transform: scaleX(1); }
.ind-icon-wrap {
  width: 48px; height: 48px;
  border: 1.5px solid var(--c-divider);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  color: var(--c-sub);
  margin-bottom: 22px;
  transition: background 0.3s, border-color 0.3s, color 0.3s;
  flex-shrink: 0;
}
.ind-name {
  font-size: 17px; font-weight: 700;
  color: var(--c-head);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.ind-desc {
  font-size: 13.5px;
  color: var(--c-text);
  line-height: 1.7;
  margin-bottom: 18px;
}
.ind-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.ind-tag {
  display: inline-block;
  font-family: var(--font-ko);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--c-accent);
  background: var(--c-accent-lt);
  padding: 3px 10px;
  border-radius: 2px;
}

/* ============================================================
   ★ CONTACT CTA — 문의 섹션 (v6.16)
   ============================================================ */
.section-contact-cta {
  padding: 96px var(--pad-x);
  background: linear-gradient(160deg, var(--c-bg) 0%, var(--c-bg-soft) 100%);
  border-top: 1px solid var(--c-divider);
}
.contact-cta-inner { max-width: var(--max-w); margin: 0 auto; }

.cta-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 48px;
  align-items: center;
  padding-bottom: 52px;
  border-bottom: 1px solid var(--c-divider);
  margin-bottom: 52px;
}
.cta-copy { max-width: 720px; min-width: 0; }
.cta-main-text {
  font-size: 40px;
  font-weight: 700;
  color: var(--c-head);
  line-height: 1.25;
  letter-spacing: -0.028em;
  margin-bottom: 18px;
}
.cta-main-text em { font-style: normal; color: var(--c-red); }
.cta-sub-text {
  font-size: 16px;
  color: var(--c-sub);
  line-height: 1.7;
  margin-bottom: 20px;
  max-width: 560px;
}
.cta-trust-line {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 600;
  color: var(--c-gray-lt);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 10px;
}
.cta-trust-line::before {
  content: '';
  display: block;
  width: 24px; height: 1.5px;
  background: var(--c-gray-lt);
  flex-shrink: 0;
}
.cta-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: stretch;
  min-width: 220px;
}
.btn-cta-primary {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  padding: 15px 28px;
  background: var(--c-red);
  color: #FDFCF9;
  border: 1.5px solid var(--c-red);
  border-radius: 3px;
  font-family: var(--font-ko);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: -0.005em;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
  white-space: nowrap;
}
.btn-cta-primary:hover {
  background: var(--c-red-dk);
  border-color: var(--c-red-dk);
  transform: translateY(-1px);
  box-shadow: 0 8px 22px color-mix(in srgb, var(--c-red) 35%, transparent);
}
.btn-cta-secondary {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  background: transparent;
  color: var(--c-red);
  border: 1.5px solid var(--c-red);
  border-radius: 3px;
  font-family: var(--font-ko);
  font-size: 14.5px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.25s, color 0.25s, transform 0.25s;
  white-space: nowrap;
}
.btn-cta-secondary:hover {
  background: var(--c-red-lt);
  transform: translateY(-1px);
}
.btn-cta-link {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 7px;
  padding: 10px 4px;
  background: transparent;
  color: var(--c-sub);
  border: none;
  font-family: var(--font-ko);
  font-size: 13.5px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: color 0.2s, gap 0.2s;
}
.btn-cta-link:hover { color: var(--c-head); gap: 11px; }
.btn-cta-link svg { flex-shrink: 0; }

.contact-info-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--c-divider);
  border: 1px solid var(--c-divider);
  border-radius: 5px;
  overflow: hidden;
}
.contact-info-cell {
  background: var(--c-bg);
  padding: 28px 26px;
  transition: background 0.25s;
  min-width: 0;
}
.contact-info-cell:hover { background: var(--c-bg-soft); }
.ci-icon-wrap {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 14px;
}
.ci-icon { color: var(--c-red); flex-shrink: 0; }
.ci-label {
  font-family: var(--font-en);
  font-size: 10.5px;
  font-weight: 700;
  color: var(--c-sub);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.ci-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-head);
  line-height: 1.5;
  word-break: keep-all;
}
.ci-value a { color: inherit; text-decoration: none; transition: color 0.2s; }
.ci-value a:hover { color: var(--c-red); }
.ci-value-sub {
  font-size: 12px;
  color: var(--c-sub);
  margin-top: 4px;
  line-height: 1.4;
}

/* === 반응형 — industries / CTA === */
@media (max-width: 1024px) {
  .section-industries, .section-contact-cta { padding: 72px var(--pad-x); }
  .industries-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .industries-title { font-size: 30px; }
  .cta-hero { grid-template-columns: 1fr; gap: 32px; }
  .cta-main-text { font-size: 32px; }
  .cta-actions { flex-direction: row; flex-wrap: wrap; min-width: auto; }
  .contact-info-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 768px) {
  .section-industries, .section-contact-cta { padding: 56px var(--pad-x); }
  .industries-title, .cta-main-text { font-size: 26px; }
  .cta-actions { flex-direction: column; }
}
@media (max-width: 480px) {
  .industries-grid { grid-template-columns: 1fr; gap: 10px; }
  .section-industries, .section-contact-cta { padding: 56px 16px; }
  .cta-main-text { font-size: 22px; }
  .industries-title { font-size: 24px; }
  .contact-info-grid { grid-template-columns: 1fr; }
  .btn-cta-primary, .btn-cta-secondary { width: 100%; }
  .ind-card { padding: 26px 22px 22px; }
  .ind-name { font-size: 15px; }
}

/* === 반응형 안전 — 가로/세로 스크롤 보호 (v6.13) === */
html, body { overflow-x: hidden; max-width: 100vw; }
.section, .main { max-width: 100%; }
img, svg { max-width: 100%; }

/* Grid track 폭 폭주 방지: min-content 강제 → minmax(0, 1fr) */
.how-container,
.about-layout,
.need-row,
.viewer-layout,
.kw-grid,
.hero-metrics,
.how-metrics,
.cause-grid,
.qa-grid,
.contact-grid,
.products-photo-grid,
.cases-grid-compact,
.network-grid,
.news-grid,
.seq-timeline,
.ind-table,
.report-meta-grid,
.cert-marks-grid-4 {
  min-width: 0;
}
.how-container > *,
.about-layout > *,
.need-row > *,
.viewer-layout > *,
.kw-grid > *,
.hero-metrics > *,
.how-metrics > *,
.cause-grid > *,
.qa-grid > *,
.contact-grid > *,
.products-photo-grid > *,
.cases-grid-compact > *,
.network-grid > *,
.news-grid > *,
.seq-timeline > *,
.ind-table > *,
.report-meta-grid > *,
.cert-marks-grid-4 > * {
  min-width: 0;
  max-width: 100%;
}

/* SVG: 컨테이너 폭 절대 초과 금지 */
.how-svg,
.lightning-svg,
.loss-svg,
.sag-scatter,
.hero-waveform,
.tsp-frame > svg,
.storm-fx > svg,
.how-stage svg {
  max-width: 100%;
  width: 100%;
  height: auto;
  display: block;
}

/* product-img: object-fit contain 유지하면서 폭 초과 방지 */
.product-img,
.prod-photo img {
  max-width: 100%;
  width: 100%;
}

/* === 480px 이하 (소형 모바일: 360 / 375) === */
@media (max-width: 480px) {
  :root { --pad-x: 16px; }
  .section { padding: 40px 16px; }
  .hero-title { font-size: 36px; line-height: 1.18; }
  .section-title { font-size: 24px; }
  .section-sub, .qa-head .section-sub { font-size: 13.5px; }

  /* how 섹션: SVG 컨테이너 강제 축소 + 가로 스크롤 차단 */
  .how-stage, .product-frame, .how-product, .how-inside, .how-info {
    max-width: 100%;
    overflow-x: hidden;
  }
  .product-img { height: 200px; }

  /* 5단계 시퀀스: 가로폭 부족하면 폰트만 축소 */
  .seq-marker { width: 20px; height: 20px; font-size: 9.5px; }
  .seq-name { font-size: 9.5px; }
  .seq-time { font-size: 9px; }

  /* 표·카드 패딩 압축 */
  .news-card, .cert-doc-card { padding: 12px 14px; }

  /* 사이드바 풀폭으로 (드로어가 280 → 화면 폭에 맞게) */
  .sidebar { width: 88vw; max-width: 320px; }
}

/* === 360px 초미세 폭 (옛 폰) === */
@media (max-width: 360px) {
  .section { padding: 36px 14px; }
  .hero-title { font-size: 32px; }
  .section-title { font-size: 22px; }
}

/* 터치 디바이스 최적화 */
@media (hover: none) and (pointer: coarse) {
  /* hover 효과는 active로 대체 */
  .toggle-btn:active { background: var(--c-head); color: var(--c-bg); }
  .cert-doc-card:active { transform: translateY(-2px); border-color: var(--c-red); }

  /* 마그네틱 효과 끔 (모바일에서 어색함) */
  [data-magnetic] { transform: none !important; }

  /* cursor-glow 끔 */
  .cursor-glow { display: none; }
}


}

/* ============================================================
   ★ HOW V2 — 산업 솔루션 톤 (v6.20)
   회로 노출 제거 · 생산라인 중심 · ABB/Siemens 톤
   ============================================================ */
.how-v2 {
  position: relative;
  background: var(--c-bg);
  border: 1px solid var(--c-divider);
  border-radius: 6px;
  overflow: hidden;
  font-family: var(--font-ko);
}

/* 상단 상태 바 (HUD 아닌 산업 UI) */
.hv-status {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-bottom: 1px solid var(--c-divider);
  background: var(--c-bg-soft);
}
.hv-status-cell {
  padding: 14px 22px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-right: 1px solid var(--c-divider);
}
.hv-status-cell:last-child { border-right: none; }
.hv-status-cell-em { background: rgba(16,185,129,0.04); }
.hv-status-key {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 700;
  color: var(--c-gray-lt);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.hv-status-val {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-head);
  transition: color 0.4s;
}
.hv-status-val-ok { color: #10B981; }
.hv-status-val-alert { color: #EF4444; }
.hv-status-val-active { color: #3B82F6; }

/* 메인 stage */
.hv-stage {
  width: 100%;
  background: #FAF8F4;
}
.hv-stage svg {
  width: 100%;
  height: auto;
  display: block;
}

/* 하단 카피 + 씬 */
.hv-bottom {
  padding: 18px 22px 20px;
  background: var(--c-bg);
  border-top: 1px solid var(--c-divider);
}
.hv-copy {
  font-size: 14.5px;
  color: var(--c-text);
  line-height: 1.6;
  margin: 0 0 14px;
  min-height: 44px;
  word-break: keep-all;
  transition: color 0.4s;
}
.hv-copy strong { color: var(--c-red); font-weight: 700; }

/* 씬 탭 */
.hv-tabs {
  display: flex;
  gap: 0;
  border-top: 1px solid var(--c-divider);
  padding-top: 14px;
}
.hv-tab {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--c-divider);
  background: var(--c-bg);
  color: var(--c-gray);
  font-family: var(--font-ko);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border-radius: 0;
  transition: all 0.2s ease;
  letter-spacing: -0.005em;
}
.hv-tab + .hv-tab { border-left: none; }
.hv-tab:first-child { border-radius: 3px 0 0 3px; }
.hv-tab:last-child  { border-radius: 0 3px 3px 0; }
.hv-tab:hover { background: var(--c-bg-soft); color: var(--c-head); }
.hv-tab.active {
  background: var(--c-head);
  color: var(--c-bg);
  border-color: var(--c-head);
}

/* SVG 인터널 애니메이션 — 부드럽고 산업적 */
@keyframes hv-conv-move {
  from { transform: translateX(0); }
  to   { transform: translateX(-28px); }
}
.hv-conv-anim { animation: hv-conv-move 1.6s linear infinite; }

@keyframes hv-parts-move {
  from { transform: translateX(0); }
  to   { transform: translateX(-540px); }
}
.hv-parts-anim { animation: hv-parts-move 14s linear infinite; }

@keyframes hv-robot-swing {
  0%, 100% { transform: rotate(-8deg); }
  50%      { transform: rotate(8deg); }
}
.hv-robot-arm {
  animation: hv-robot-swing 3.2s ease-in-out infinite;
  transform-origin: 50px 74px;
}
@keyframes hv-robot-wrist {
  0%, 100% { transform: rotate(6deg); }
  50%      { transform: rotate(-6deg); }
}
.hv-robot-wrist {
  animation: hv-robot-wrist 3.2s ease-in-out infinite;
  transform-origin: 50px 42px;
}

@keyframes hv-led-blink {
  0%, 60%  { opacity: 1; }
  70%, 90% { opacity: 0.3; }
}
.hv-led { animation: hv-led-blink 2.4s ease-in-out infinite; }

@keyframes hv-blink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.2; }
}
.hv-blink { animation: hv-blink 1.4s ease-in-out infinite; }

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .hv-conv-anim, .hv-parts-anim, .hv-robot-arm, .hv-robot-wrist, .hv-led, .hv-blink {
    animation: none !important;
  }
}

/* 반응형 */
@media (max-width: 1024px) {
  .hv-status-cell { padding: 12px 16px; }
  .hv-status-val { font-size: 13px; }
}
@media (max-width: 768px) {
  .hv-status { grid-template-columns: 1fr; }
  .hv-status-cell { border-right: none; border-bottom: 1px solid var(--c-divider); }
  .hv-status-cell:last-child { border-bottom: none; }
  .hv-tabs { flex-direction: column; }
  .hv-tab + .hv-tab { border-left: 1px solid var(--c-divider); border-top: none; }
  .hv-tab:first-child { border-radius: 3px 3px 0 0; }
  .hv-tab:last-child  { border-radius: 0 0 3px 3px; }
  .hv-copy { font-size: 13px; min-height: auto; }
}