:root {
  --accent: #1a47c1;
  --accent-dark: #0033ba;
  --accent-soft: #6682d3;
  --blue: #1a47c1;
  --ink: #151515;
  --muted: #666b70;
  --line: #e2e2e2;
  --fog: #eff0f4;
  --white: #fff;
  --container: 1240px;
  --header-h: 110px;
  --ease: cubic-bezier(.22, .78, .24, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  word-break: keep-all;
  -webkit-font-smoothing: antialiased;
}

body.nav-open { overflow: hidden; }
img, video { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }

.container {
  width: min(calc(100% - 48px), var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 500;
  padding: 10px 16px;
  color: #fff;
  background: #000;
  transform: translateY(-150%);
}

.skip-link:focus { transform: translateY(0); }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.97);
  box-shadow: 0 1px 0 rgba(0,0,0,.12);
  backdrop-filter: blur(12px);
}

.header-utility {
  height: 34px;
  color: #53575b;
  background: #f0f0f0;
  border-bottom: 1px solid #ddd;
}

.utility-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .11em;
}

.utility-inner p { margin: 0; }
.utility-inner div { display: flex; gap: 28px; }
.utility-inner a:hover { color: var(--accent); }

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 42px;
}

.brand {
  position: relative;
  align-self: stretch;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  padding-right: 24px;
  border-right: 1px solid #e2e2e2;
}

.brand-logo {
  width: 225px;
  height: 60px;
  object-fit: contain;
  object-position: left center;
}

.brand > span {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 70px;
  height: 6px;
  background: var(--accent);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(22px, 2.8vw, 43px);
  margin-left: auto;
}

.main-nav a {
  position: relative;
  padding: 25px 0 22px;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -.025em;
}

.main-nav a:not(.nav-contact)::after {
  content: "";
  position: absolute;
  right: 100%;
  bottom: 0;
  left: 0;
  height: 4px;
  background: var(--accent);
  transition: right .3s var(--ease);
}

.main-nav a:hover::after,
.main-nav a.is-active::after { right: 0; }

.main-nav .nav-contact {
  min-width: 82px;
  padding: 11px 17px;
  color: #fff;
  background: var(--accent);
  text-align: center;
  font-weight: 700;
}

.main-nav .nav-contact:hover { background: var(--accent-dark); }

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 11px;
  border: 0;
  background: transparent;
}

.nav-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--ink);
  transition: transform .25s, opacity .25s;
}

/* Hero slider */
.hero {
  position: relative;
  min-height: 620px;
  overflow: hidden;
  color: var(--ink);
  background: #222;
}

.hero-slides,
.hero-slide { position: absolute; inset: 0; }

.hero-slide {
  z-index: 0;
  opacity: 0;
  visibility: hidden;
  transform: scale(1.025);
  transition: opacity .65s ease, visibility .65s, transform 1.2s var(--ease);
}

.hero-slide.is-active {
  z-index: 1;
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.hero-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-slide:nth-child(2) .hero-media { object-position: center 54%; }
.hero-slide:nth-child(3) .hero-media { object-position: center 45%; }

.hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,.22), rgba(0,0,0,0) 52%);
}

.hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  align-items: center;
}

.hero-panel {
  width: min(570px, 48vw);
  padding: 42px 48px 46px;
  background: rgba(255,255,255,.94);
  box-shadow: 0 18px 45px rgba(0,0,0,.16);
}

.hero-panel > p {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .15em;
}

.hero-panel h1,
.hero-panel h2 {
  margin: 0;
  font-size: clamp(38px, 4vw, 55px);
  font-weight: 600;
  line-height: 1.16;
  letter-spacing: -.055em;
}

.hero-panel > span {
  display: block;
  margin-top: 22px;
  color: #555b60;
  font-size: 16px;
  line-height: 1.75;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  margin-top: 28px;
  padding: 12px 22px;
  border: 1px solid transparent;
  font-size: 13px;
  font-weight: 750;
  transition: color .25s, background .25s, border-color .25s;
}

.button b { font-size: 18px; font-weight: 400; }
.button-primary { color: #fff; background: var(--accent); }
.button-primary:hover { background: var(--accent-dark); }

.hero-arrow {
  position: absolute;
  z-index: 5;
  top: 50%;
  width: 54px;
  height: 64px;
  border: 0;
  color: #222;
  background: rgba(255,255,255,.9);
  font-family: Arial, sans-serif;
  font-size: 42px;
  font-weight: 200;
  line-height: 1;
  cursor: pointer;
  transform: translateY(-50%);
  transition: color .2s, background .2s;
}

.hero-arrow:hover { color: #fff; background: var(--accent); }
.hero-arrow-prev { left: 0; }
.hero-arrow-next { right: 0; }

.hero-pagination {
  position: absolute;
  z-index: 5;
  right: max(24px, calc((100% - var(--container)) / 2));
  bottom: 25px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  color: #fff;
  background: rgba(0,0,0,.62);
}

.hero-pagination button {
  width: 34px;
  height: 16px;
  padding: 7px 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.hero-pagination button span {
  display: block;
  width: 100%;
  height: 2px;
  background: rgba(255,255,255,.4);
}

.hero-pagination button.is-active span { background: var(--accent); }
.hero-pagination output { min-width: 48px; margin-left: 6px; font-size: 10px; letter-spacing: .12em; }

.fact-strip { border-bottom: 1px solid var(--line); background: #fff; }

.fact-strip-inner {
  min-height: 112px;
  display: grid;
  grid-template-columns: 150px 190px 220px 1fr;
  align-items: stretch;
}

.fact-strip-inner > div {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 18px 26px 18px 0;
  border-right: 1px solid var(--line);
}

.fact-strip-inner > div + div { padding-left: 26px; }
.fact-strip strong { font-size: 24px; font-weight: 700; line-height: 1; }
.fact-strip span { margin-top: 8px; color: var(--muted); font-size: 11px; }
.fact-strip p { align-self: center; margin: 0 0 0 38px; color: #575c61; font-size: 10px; font-weight: 700; letter-spacing: .1em; }

/* Shared sections */
.section { padding-block: clamp(90px, 9vw, 135px); }
.section-heading { max-width: 850px; margin: 0 auto 68px; text-align: center; }
.section-kicker { margin: 0 0 18px; color: var(--accent); font-size: 11px; font-weight: 800; letter-spacing: .16em; }
.section-heading h2,
.film-copy h2,
.contact h2 {
  margin: 0;
  font-size: clamp(38px, 4.5vw, 60px);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -.055em;
}

.heading-row { max-width: none; }
.heading-note { max-width: 690px; margin: 22px auto 0; color: var(--muted); font-size: 15px; }

/* About */
.about { overflow: hidden; background: #fff; }
.about .section-heading { max-width: 860px; margin: 0 0 clamp(45px, 5vw, 68px); text-align: left; }
.about .section-heading h2 { font-size: clamp(38px, 4.4vw, 62px); }
.about-layout { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(310px, .75fr); gap: clamp(42px, 6vw, 82px); align-items: stretch; }
.about-visual { position: relative; min-height: 500px; overflow: hidden; background: #e9eaeb; }
.about-machine { position: absolute; inset: 0; }
.about-machine img { width: 100%; height: 100%; object-fit: cover; }
.about-content { display: flex; flex-direction: column; justify-content: center; }
.about-content > .lead { margin: 0; font-size: clamp(21px, 2vw, 28px); font-weight: 550; line-height: 1.6; letter-spacing: -.035em; }
.about-principles { margin: clamp(35px, 4vw, 54px) 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.about-principles li { min-height: 88px; display: grid; grid-template-columns: 42px 1fr; align-items: center; gap: 10px; border-bottom: 1px solid var(--line); }
.about-principles > li > span { align-self: start; padding-top: 29px; color: var(--accent); font-size: 10px; font-weight: 800; letter-spacing: .08em; }
.about-principles div { display: flex; align-items: baseline; justify-content: space-between; gap: 18px; }
.about-principles strong { font-size: 17px; letter-spacing: -.025em; }
.about-principles small { color: #71767a; font-size: 11px; text-align: right; }

/* Film */
.film-section { padding-block: clamp(80px, 8vw, 115px); background: var(--fog); }
.film-layout { display: grid; grid-template-columns: 1.35fr .65fr; gap: clamp(45px, 7vw, 90px); align-items: center; }
.film-player { position: relative; border-left: 8px solid var(--accent); background: #000; box-shadow: 0 20px 45px rgba(0,0,0,.12); }
.film-player video { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.film-duration { position: absolute; right: 12px; bottom: 12px; padding: 3px 8px; color: #fff; background: rgba(0,0,0,.7); font-size: 10px; }
.film-copy p:not(.section-kicker) { margin: 24px 0 0; color: var(--muted); }
.film-copy ul { margin: 25px 0 0; padding: 0; list-style: none; border-top: 1px solid #c9cbcd; }
.film-copy li { position: relative; padding: 11px 0 11px 17px; border-bottom: 1px solid #d6d8da; font-size: 12px; font-weight: 650; }
.film-copy li::before { content: ""; position: absolute; top: 20px; left: 0; width: 6px; height: 2px; background: var(--accent); }

/* Products */
.products { background: #fff; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.product-card { position: relative; min-width: 0; border: 1px solid var(--line); background: #fff; transition: transform .35s var(--ease), box-shadow .35s var(--ease); }
.product-card::after { content: ""; position: absolute; right: 100%; bottom: -1px; left: -1px; height: 5px; background: var(--accent); transition: right .35s var(--ease); }
.product-card:hover { transform: translateY(-7px); box-shadow: 0 18px 40px rgba(0,0,0,.12); }
.product-card:hover::after { right: -1px; }
.product-card figure { aspect-ratio: 16/10; margin: 0; overflow: hidden; background: #eee; }
.product-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.product-card:hover img { transform: scale(1.035); }
.product-card-metal img { object-fit: contain; }
.product-body { min-height: 190px; padding: 25px 26px 30px; }
.product-body > span { color: var(--accent); font-size: 9px; font-weight: 800; letter-spacing: .13em; }
.product-body h3 { margin: 11px 0 8px; font-size: 21px; letter-spacing: -.04em; }
.product-body p { margin: 0; color: var(--muted); font-size: 13px; }
.source-note { margin: 20px 0 0; color: #85898d; font-size: 10px; text-align: right; }

/* Process */
.process { background: var(--fog); }
.process-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; margin: 0; padding: 1px; list-style: none; background: #d6d8da; }
.process-grid li { position: relative; min-height: 190px; display: flex; flex-direction: column; justify-content: flex-end; padding: 22px; background: #fff; transition: color .25s, background .25s; }
.process-grid li:hover { color: #fff; background: var(--accent); }
.process-grid b { position: absolute; top: 18px; left: 21px; color: var(--accent); font-size: 11px; }
.process-grid li:hover b { color: #fff; }
.process-grid span { font-size: 18px; font-weight: 700; letter-spacing: -.035em; }
.process-grid small { margin-top: 5px; color: #7b8084; font-size: 10px; }
.process-grid li:hover small { color: rgba(255,255,255,.75); }
.process-grid li::after { content: "→"; position: absolute; top: 16px; right: 18px; color: #a5aaad; }
.process-grid li:nth-child(5n)::after,
.process-grid li:last-child::after { display: none; }

/* Equipment */
.equipment { position: relative; overflow: hidden; color: var(--ink); background: #fff; }
.equipment-grid-bg { display: none; }
.heading-light .section-kicker { color: var(--accent-soft); }
.heading-light .heading-note { color: var(--muted); }
.equipment-slider { position: relative; }
.equipment-slider-window { width: 100%; overflow: hidden; outline: none; touch-action: pan-y; user-select: none; }
.equipment-slider-track { display: flex; gap: 22px; transform: translate3d(0,0,0); transition: transform .65s var(--ease); will-change: transform; }
.equipment-slide { position: relative; flex: 0 0 calc((100% - 22px) / 2); min-width: 0; padding: 0; overflow: hidden; border: 1px solid var(--line); color: var(--ink); background: #fff; text-align: left; cursor: zoom-in; }
.equipment-slide-media { height: 430px; display: block; overflow: hidden; background: #f3f3f3; }
.equipment-slide-media img { width: 100%; height: 100%; object-fit: contain; padding: 28px; transition: transform .6s var(--ease); }
.equipment-slide:first-child .equipment-slide-media img { object-fit: cover; padding: 0; }
.equipment-slide:hover .equipment-slide-media img { transform: scale(1.025); }
.equipment-slide-info { min-height: 108px; display: flex; flex-direction: column; justify-content: center; padding: 18px 72px 18px 24px; border-top: 1px solid var(--line); }
.equipment-slide-info small { color: var(--accent); font-size: 9px; font-weight: 800; letter-spacing: .14em; }
.equipment-slide-info b { margin-top: 7px; font-size: 21px; line-height: 1.25; letter-spacing: -.025em; }
.equipment-slide-info em { margin-top: 4px; color: #777; font-size: 10px; font-style: normal; letter-spacing: .1em; }
.equipment-slide > i { position: absolute; right: 22px; bottom: 37px; width: 38px; height: 38px; display: grid; place-items: center; color: #fff; background: var(--accent); font-size: 20px; font-style: normal; transition: transform .25s; }
.equipment-slide:hover > i { transform: rotate(90deg); }
.equipment-slider-controls { min-height: 82px; display: grid; grid-template-columns: minmax(140px,1fr) auto 54px 54px; align-items: center; gap: 14px; }
.equipment-progress { height: 2px; overflow: hidden; background: #d5d7d9; }
.equipment-progress span { width: 12.5%; height: 100%; display: block; background: var(--accent); transition: width .45s var(--ease); }
.equipment-slider-controls output { min-width: 64px; color: #62666a; font-size: 10px; font-weight: 700; letter-spacing: .12em; text-align: center; }
.equipment-slider-controls button { width: 54px; height: 54px; border: 1px solid #bbb; background: #fff; font-family: Arial,sans-serif; font-size: 34px; font-weight: 200; line-height: 1; cursor: pointer; transition: color .2s, background .2s, border-color .2s; }
.equipment-slider-controls button:hover { color: #fff; border-color: var(--accent); background: var(--accent); }
.equipment-list { margin-top: 25px; border-top: 1px solid #aaa; border-bottom: 1px solid var(--line); }
.equipment-list summary { min-height: 76px; display: flex; align-items: center; gap: 18px; padding: 0 4px; cursor: pointer; list-style: none; }
.equipment-list summary::-webkit-details-marker { display: none; }
.equipment-list summary span { font-size: 16px; font-weight: 750; }
.equipment-list summary small { color: #777; font-size: 10px; }
.equipment-list summary i { position: relative; width: 30px; height: 30px; margin-left: auto; }
.equipment-list summary i::before,
.equipment-list summary i::after { content: ""; position: absolute; top: 14px; left: 6px; width: 18px; height: 1px; background: var(--ink); transition: transform .25s; }
.equipment-list summary i::after { transform: rotate(90deg); }
.equipment-list[open] summary i::after { transform: rotate(0); }
.table-wrap { overflow-x: auto; padding-bottom: 24px; }
.equipment-list table { width: 100%; min-width: 760px; border-collapse: collapse; color: #555; font-size: 12px; }
.equipment-list th { color: #fff; background: #303336; text-align: left; }
.equipment-list th, .equipment-list td { padding: 12px 15px; border: 1px solid var(--line); }

/* History */
.history { background: var(--fog); }
.history-layout { display: grid; grid-template-columns: 1fr .78fr; gap: clamp(50px, 7vw, 95px); align-items: start; }
.timeline { border-top: 2px solid var(--ink); }
.timeline-item { display: grid; grid-template-columns: 115px 1fr; gap: 25px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.timeline-item time { color: var(--accent); font-size: 18px; font-weight: 750; }
.timeline-item h3 { margin: 0 0 5px; font-size: 16px; }
.timeline-item p { margin: 0; color: var(--muted); font-size: 12px; }
.history-proof { position: sticky; top: calc(var(--header-h) + 25px); color: #fff; background: #202326; }
.proof-image { aspect-ratio: 758 / 556; overflow: hidden; background: #fff; }
.proof-image img { width: 100%; height: 100%; object-fit: contain; }
.proof-copy { padding: 30px 32px 34px; }
.proof-copy > span { color: var(--accent-soft); font-size: 9px; font-weight: 800; letter-spacing: .14em; }
.proof-copy h3 { margin: 12px 0; font-size: 26px; line-height: 1.4; }
.proof-copy p { margin: 0; color: rgba(255,255,255,.65); font-size: 12px; }
.proof-list { margin: 22px 0 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.18); }
.proof-list li { display: flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.7); font-size: 11px; }
.proof-list span { color: #fff; font-weight: 700; }

/* Contact/footer */
.contact { position: relative; overflow: hidden; padding-block: clamp(90px, 9vw, 135px); color: #fff; background: var(--blue); }
.contact-grid { position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px); background-size: 90px 90px; }
.contact-inner { position: relative; display: grid; grid-template-columns: 1.08fr .92fr; gap: clamp(60px, 9vw, 130px); align-items: end; }
.contact .section-kicker { color: #ccd6f1; }
.contact-copy > p:not(.section-kicker) { max-width: 570px; margin: 26px 0 0; color: rgba(255,255,255,.72); }
.button-light { color: #fff; background: var(--accent); }
.button-light:hover { color: var(--accent-dark); background: #fff; }
.contact-info { display: grid; grid-template-columns: 1fr 1fr; margin: 0; font-style: normal; border-top: 1px solid rgba(255,255,255,.55); }
.contact-info > div { min-height: 112px; padding: 18px 7px 16px 0; border-bottom: 1px solid rgba(255,255,255,.2); }
.contact-info > div:first-child { grid-column: 1/-1; }
.contact-info > div:nth-child(3) { padding-left: 20px; border-left: 1px solid rgba(255,255,255,.2); }
.contact-info small { color: #ccd6f1; font-size: 9px; font-weight: 800; letter-spacing: .14em; }
.contact-info p { margin: 7px 0 0; font-size: 16px; font-weight: 650; }
.site-footer { color: rgba(255,255,255,.58); background: #17191b; }
.footer-inner { min-height: 145px; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 10px 35px; padding-block: 24px; }
.footer-brand { display: flex; flex-direction: column; }
.footer-brand strong { color: #fff; font-size: 19px; }
.footer-brand small { color: #9aace3; font-size: 9px; letter-spacing: .12em; }
.site-footer p { margin: 0; font-size: 10px; }
.copyright { grid-column: 2; }

/* Lightbox / motion */
.lightbox { width: min(900px, calc(100% - 40px)); padding: 0; border: 0; color: #fff; background: #17191b; box-shadow: 0 30px 90px rgba(0,0,0,.5); }
.lightbox::backdrop { background: rgba(0,0,0,.84); backdrop-filter: blur(5px); }
.lightbox > button { position: absolute; z-index: 2; top: 10px; right: 10px; width: 42px; height: 42px; border: 1px solid rgba(255,255,255,.35); color: #fff; background: rgba(0,0,0,.65); font-size: 26px; cursor: pointer; }
.lightbox img { width: 100%; max-height: 72vh; object-fit: contain; background: #fff; }
.lightbox p { margin: 0; padding: 16px 20px; color: rgba(255,255,255,.72); font-size: 12px; }
.reveal { opacity: 1; transform: none; }
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal-delay { transition-delay: .12s; }
.js .reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1080px) {
  .main-nav { gap: 20px; }
  .main-nav a { font-size: 14px; }
  .brand-logo { width: 200px; height: 56px; }
  .fact-strip-inner { grid-template-columns: 135px 170px 195px 1fr; }
  .fact-strip p { margin-left: 24px; font-size: 9px; }
}

@media (max-width: 900px) {
  :root { --header-h: 68px; }
  .container { width: min(calc(100% - 36px), var(--container)); }
  .header-utility { display: none; }
  .header-inner { min-height: var(--header-h); }
  .brand { padding-right: 0; border: 0; }
  .brand > span { width: 55px; height: 4px; }
  .nav-toggle { position: relative; z-index: 3; display: block; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .main-nav { position: fixed; inset: var(--header-h) 0 auto; display: grid; gap: 0; margin: 0; padding: 18px; border-top: 1px solid var(--line); background: #fff; box-shadow: 0 20px 45px rgba(0,0,0,.16); opacity: 0; visibility: hidden; transform: translateY(-120%); transition: transform .35s var(--ease), opacity .25s, visibility .35s; }
  .main-nav.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
  .main-nav a { padding: 13px 8px; border-bottom: 1px solid #e6e6e6; font-size: 15px; }
  .main-nav a::after { display: none; }
  .main-nav .nav-contact { margin-top: 8px; }
  .hero { min-height: 650px; }
  .hero-panel { width: min(570px, calc(100% - 80px)); }
  .fact-strip-inner { grid-template-columns: repeat(3, 1fr); min-height: 105px; }
  .fact-strip-inner > div { padding: 18px 18px; }
  .fact-strip-inner > div:first-child { padding-left: 0; }
  .fact-strip p { grid-column: 1/-1; margin: 0; padding: 14px 0; text-align: center; border-top: 1px solid var(--line); }
  .about-layout, .film-layout, .history-layout, .contact-inner { grid-template-columns: 1fr; }
  .about-visual { min-height: 480px; }
  .about-content { max-width: 720px; }
  .film-copy { max-width: 650px; }
  .product-grid { grid-template-columns: repeat(2,1fr); }
  .process-grid { grid-template-columns: repeat(2,1fr); }
  .process-grid li:nth-child(5n)::after { display: block; }
  .process-grid li:nth-child(2n)::after { display: none; }
  .equipment-slide { flex-basis: min(680px, 78vw); }
  .equipment-slide-media { height: 400px; }
  .history-proof { position: static; display: grid; grid-template-columns: 1fr 1fr; }
  .proof-image { min-height: 360px; aspect-ratio: auto; }
}

@media (max-width: 640px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .brand-logo { width: 180px; height: 52px; }
  .hero { min-height: 665px; }
  .hero-shade { background: linear-gradient(to top, rgba(0,0,0,.35), rgba(0,0,0,0) 70%); }
  .hero-content { align-items: flex-end; padding-bottom: 78px; }
  .hero-panel { width: 100%; padding: 28px 26px 30px; }
  .hero-panel > p { margin-bottom: 12px; font-size: 9px; }
  .hero-panel h1, .hero-panel h2 { font-size: clamp(31px, 9vw, 39px); }
  .hero-panel > span { margin-top: 16px; font-size: 14px; line-height: 1.65; }
  .hero-panel .button { width: 100%; margin-top: 21px; }
  .hero-arrow { top: 40%; width: 42px; height: 54px; font-size: 34px; }
  .hero-pagination { right: 14px; bottom: 18px; }
  .fact-strip-inner { grid-template-columns: repeat(3,1fr); }
  .fact-strip-inner > div { min-width: 0; padding: 16px 8px; }
  .fact-strip-inner > div:first-child { padding-left: 0; }
  .fact-strip strong { font-size: 18px; }
  .fact-strip span { font-size: 9px; line-height: 1.4; }
  .fact-strip p { display: none; }
  .section { padding-block: 82px; }
  .section-heading { margin-bottom: 43px; text-align: left; }
  .section-heading h2, .film-copy h2, .contact h2 { font-size: 37px; }
  .heading-note { margin: 18px 0 0; font-size: 14px; }
  .about .section-heading { margin-bottom: 36px; }
  .about .section-heading h2 { font-size: 37px; }
  .about-visual { min-height: 360px; }
  .about-content > .lead { font-size: 21px; }
  .about-principles { margin-top: 30px; }
  .about-principles div { display: block; }
  .about-principles small { display: block; margin-top: 3px; text-align: left; }
  .film-section { padding-block: 72px; }
  .film-player { border-left-width: 5px; }
  .product-grid { grid-template-columns: 1fr; gap: 18px; }
  .product-body { min-height: 0; }
  .source-note { text-align: left; }
  .process-grid { grid-template-columns: 1fr; }
  .process-grid li { min-height: 145px; }
  .process-grid li::after { display: none !important; }
  .equipment-slider-window { width: calc(100vw - 14px); }
  .equipment-slider-track { gap: 14px; }
  .equipment-slide { flex-basis: calc(100vw - 42px); }
  .equipment-slide-media { height: 315px; }
  .equipment-slide-info { min-height: 102px; padding: 16px 62px 16px 18px; }
  .equipment-slide-info b { font-size: 18px; }
  .equipment-slide > i { right: 17px; bottom: 32px; width: 36px; height: 36px; }
  .equipment-slider-controls { grid-template-columns: 1fr auto 48px 48px; gap: 8px; }
  .equipment-slider-controls button { width: 48px; height: 48px; }
  .timeline-item { grid-template-columns: 80px 1fr; gap: 15px; }
  .history-proof { display: block; }
  .proof-image { min-height: 0; aspect-ratio: 758/556; }
  .contact-info { grid-template-columns: 1fr; }
  .contact-info > div:first-child { grid-column: auto; }
  .contact-info > div:nth-child(3) { padding-left: 0; border-left: 0; }
  .footer-inner { min-height: 180px; display: flex; align-items: flex-start; justify-content: center; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}