:root {
  --navy: #0a2540;
  --navy-2: #0d3a5c;
  --blue: #1b6ca8;
  --accent: #00a6c9;
  --sky: #e8f3f8;
  --ink: #16222e;
  --muted: #5a6b78;
  --line: #e3e9ee;
  --bg: #ffffff;
  --bg-alt: #f5f8fa;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(10, 37, 64, 0.08);
  --maxw: 1140px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Sans KR", "Inter", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

a { color: inherit; text-decoration: none; }

/* Buttons */
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  padding: 14px 26px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-size: 15px;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  box-shadow: 0 8px 20px rgba(0, 166, 201, 0.25);
}
.btn:hover { transform: translateY(-2px); background: #0093b3; }
.btn--sm { padding: 10px 18px; font-size: 14px; }
.btn--ghost { background: transparent; box-shadow: none; border: 1.5px solid rgba(255,255,255,.6); }
.btn--ghost:hover { background: rgba(255,255,255,.12); }
.btn--light { background: #fff; color: var(--navy); }
.btn--light:hover { background: #eef6fa; }

/* Topbar */
.topbar { background: var(--navy); color: #cfe0ec; font-size: 13px; }
.topbar__inner { display: flex; align-items: center; gap: 14px; height: 40px; flex-wrap: wrap; }
.topbar__sep { opacity: .4; }
.topbar__spacer { flex: 1; }
.topbar a:hover { color: #fff; }

/* Header */
.header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.header__inner { display: flex; align-items: center; gap: 24px; height: 108px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand__mark { font-size: 30px; color: var(--accent); line-height: 1; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__text strong { font-size: 17px; letter-spacing: .5px; color: var(--navy); }
.brand__text small { font-size: 11px; letter-spacing: 2px; color: var(--muted); }
.nav { display: flex; gap: 28px; margin-left: auto; font-weight: 500; font-size: 15px; }
.nav a { color: var(--ink); position: relative; }
.nav a:hover { color: var(--accent); }
.header .btn { margin-left: 8px; }

/* Hero */
.hero {
  position: relative;
  color: #fff;
  background-color: var(--navy);
  background-image:
    linear-gradient(180deg, rgba(10,37,64,.80), rgba(10,37,64,.74)),
    linear-gradient(120deg, rgba(10,37,64,.55), rgba(0,166,201,.18)),
    url("img/hero.jpg");
  background-size: cover;
  background-position: center 38%;
  background-repeat: no-repeat;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(255,255,255,.04) 0 1px, transparent 1px 80px);
  opacity: .5;
}
.hero__content { position: relative; z-index: 2; padding: 96px 24px 88px; }
.hero__eyebrow { letter-spacing: 4px; font-size: 13px; color: var(--accent); font-weight: 600; margin-bottom: 18px; }
.hero__title { font-size: clamp(32px, 5vw, 54px); line-height: 1.18; font-weight: 800; letter-spacing: -.5px; }
.hero__desc { max-width: 620px; margin: 22px 0 32px; color: #d6e4ef; font-size: 17px; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__stats { display: flex; gap: 48px; margin-top: 56px; flex-wrap: wrap; }
.hero__stats div { display: flex; flex-direction: column; }
.hero__stats strong { font-size: 30px; font-weight: 800; color: #fff; }
.hero__stats span { font-size: 14px; color: #aac4d6; }

/* Sections */
.section { padding: 88px 0; }
.section--alt { background: var(--bg-alt); }
.section__head { text-align: center; max-width: 680px; margin: 0 auto 52px; }
.eyebrow { letter-spacing: 3px; font-size: 13px; font-weight: 700; color: var(--accent); margin-bottom: 12px; }
.section__title { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; color: var(--navy); letter-spacing: -.5px; line-height: 1.25; }
.section__sub { color: var(--muted); margin-top: 14px; font-size: 16px; }
.lead { font-size: 18px; color: var(--ink); margin: 18px 0 16px; }
.section p { color: var(--muted); }

/* Grid */
.grid { display: grid; gap: 40px; }
.grid--2 { grid-template-columns: 1fr 1fr; align-items: start; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }

/* Checklist */
.checklist { list-style: none; margin-top: 22px; display: grid; gap: 12px; }
.checklist li { position: relative; padding-left: 30px; color: var(--ink); }
.checklist li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  width: 20px; height: 20px; background: var(--sky); color: var(--blue);
  border-radius: 50%; font-size: 12px; display: grid; place-items: center; font-weight: 700;
}

/* About cards */
.about__cards { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.mini-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.mini-card__icon { font-size: 28px; }
.mini-card h3 { margin: 12px 0 6px; font-size: 17px; color: var(--navy); }
.mini-card p { font-size: 14px; color: var(--muted); }

/* Cards */
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; box-shadow: var(--shadow);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(10,37,64,.12); border-color: #cfe6ee; }
.card__num { font-size: 14px; font-weight: 800; color: var(--accent); letter-spacing: 1px; }
.card h3 { margin: 12px 0 10px; font-size: 19px; color: var(--navy); }
.card p { font-size: 15px; color: var(--muted); }

/* Tags */
.tags { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.tags span {
  background: #fff; border: 1px solid var(--line); color: var(--navy);
  padding: 12px 20px; border-radius: 999px; font-weight: 500; font-size: 15px;
  box-shadow: 0 4px 12px rgba(10,37,64,.05);
  transition: background .15s ease, color .15s ease, transform .15s ease;
}
.tags span:hover { background: var(--navy); color: #fff; transform: translateY(-2px); }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step { background: #fff; border-radius: var(--radius); padding: 28px 24px; border: 1px solid var(--line); position: relative; }
.step__no {
  display: grid; place-items: center; width: 44px; height: 44px;
  background: var(--navy); color: #fff; border-radius: 12px; font-weight: 800; font-size: 18px; margin-bottom: 16px;
}
.step h3 { color: var(--navy); font-size: 17px; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 14px; }

/* CTA */
.cta {
  background-color: var(--navy);
  background-image:
    linear-gradient(120deg, rgba(10,37,64,.92), rgba(27,108,168,.82)),
    url("img/cta.jpg");
  background-size: cover;
  background-position: center 45%;
  background-repeat: no-repeat;
  color: #fff; text-align: center;
}
.cta__inner { padding: 72px 24px; }
.cta h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; }
.cta p { margin: 14px 0 28px; color: #d6e4ef; font-size: 17px; }

/* Contact */
.contact-list { list-style: none; margin-top: 22px; display: grid; gap: 14px; }
.contact-list li { display: flex; gap: 14px; align-items: baseline; padding-bottom: 14px; border-bottom: 1px solid var(--line); color: var(--ink); }
.contact-list strong { flex: 0 0 84px; color: var(--muted); font-weight: 600; font-size: 14px; }
.contact-list li > a, .contact-list li > span { min-width: 0; overflow-wrap: anywhere; }
.contact-list a:hover { color: var(--accent); }

/* Form */
.form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label { display: block; font-size: 14px; font-weight: 600; color: var(--navy); margin-bottom: 16px; }
.form input, .form textarea {
  width: 100%; margin-top: 7px; padding: 12px 14px; font: inherit; font-size: 15px;
  border: 1px solid var(--line); border-radius: 10px; background: var(--bg-alt); color: var(--ink);
  font-weight: 400; transition: border-color .15s ease, background .15s ease;
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--accent); background: #fff; }
.form .btn { width: 100%; margin-top: 4px; }
.form__msg { display: none; margin-top: 16px; color: var(--blue); font-size: 14px; font-weight: 500; text-align: center; }

/* Footer */
.footer { background: var(--navy); color: #b9cdda; padding-top: 48px; }
.footer__inner { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer__brand { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.footer__brand strong { color: #fff; font-size: 16px; }
.footer__brand p { font-size: 13px; color: #8fa8b9; }
.footer__nav { display: flex; gap: 24px; font-size: 15px; }
.footer__nav a:hover { color: #fff; }
.footer__bottom { padding: 22px 24px; font-size: 13px; color: #7e97a8; }

/* ===== Animations ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Hero entrance (runs on load, staggered) */
.hero__eyebrow,
.hero__title,
.hero__desc,
.hero__actions,
.hero__tags {
  opacity: 0;
  animation: fadeUp .9s cubic-bezier(.22,.61,.36,1) forwards;
}
.hero__eyebrow { animation-delay: .15s; }
.hero__title   { animation-delay: .32s; }
.hero__desc    { animation-delay: .50s; }
.hero__actions { animation-delay: .66s; }
.hero__tags    { animation-delay: .82s; }

/* Scroll reveal */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .7s cubic-bezier(.22,.61,.36,1), transform .7s cubic-bezier(.22,.61,.36,1); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
/* Stagger children within a revealed group */
.reveal-group.is-visible > * { animation: fadeUp .7s cubic-bezier(.22,.61,.36,1) both; }
.reveal-group.is-visible > *:nth-child(1) { animation-delay: .00s; }
.reveal-group.is-visible > *:nth-child(2) { animation-delay: .08s; }
.reveal-group.is-visible > *:nth-child(3) { animation-delay: .16s; }
.reveal-group.is-visible > *:nth-child(4) { animation-delay: .24s; }
.reveal-group.is-visible > *:nth-child(5) { animation-delay: .32s; }
.reveal-group.is-visible > *:nth-child(6) { animation-delay: .40s; }

@media (prefers-reduced-motion: reduce) {
  .hero__eyebrow, .hero__title, .hero__desc, .hero__actions, .hero__tags,
  .reveal, .reveal-group.is-visible > * { animation: none !important; opacity: 1 !important; transform: none !important; transition: none !important; }
}

/* Logo */
.brand__logo { height: 80px; width: auto; display: block; }
.footer__logo { height: 72px; width: auto; display: block; }

/* Hero tags */
.hero__tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 48px; max-width: 720px; }
.hero__tags span {
  border: 1px solid rgba(255,255,255,.28); background: rgba(255,255,255,.06);
  color: #dbeaf5; padding: 8px 16px; border-radius: 999px; font-size: 14px; font-weight: 500;
}

/* About right column */
.about__right { display: grid; gap: 22px; align-content: start; }
.about__photo { width: 100%; height: 230px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); display: block; }

/* Overview table */
.overview { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 28px; box-shadow: var(--shadow); }
.overview__title { color: var(--navy); font-size: 20px; margin-bottom: 18px; }
.overview__table { width: 100%; border-collapse: collapse; }
.overview__table th, .overview__table td { text-align: left; vertical-align: top; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.overview__table th { width: 130px; color: var(--accent); font-weight: 700; font-size: 13px; letter-spacing: .5px; text-transform: uppercase; }
.overview__table td { color: var(--ink); }
.overview__table td span { color: var(--muted); font-size: 13px; }
.overview__table a:hover { color: var(--accent); }
.overview__table tr:last-child th, .overview__table tr:last-child td { border-bottom: none; }

/* Card list */
.card__list { list-style: none; margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.card__list li {
  background: var(--sky); color: var(--blue); font-size: 13px; font-weight: 500;
  padding: 5px 12px; border-radius: 6px;
}
.card__list--flags li { font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.card__list--flags li::first-letter { font-size: 16px; }

/* Clients logo wall */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 18px;
}
.client-tile {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  min-height: 124px;
  padding: 18px 22px;
  display: grid;
  place-items: center;
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--navy);
  line-height: 1.4;
  box-shadow: 0 6px 16px rgba(10,37,64,.05);
  filter: grayscale(1);
  opacity: .82;
  transition: transform .18s ease, box-shadow .18s ease, opacity .18s ease, border-color .18s ease, filter .18s ease;
}
.client-tile:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 34px rgba(10,37,64,.12);
  border-color: #cfe6ee;
  opacity: 1;
  filter: grayscale(0);
}
.client-tile img { max-width: 82%; max-height: 74px; width: auto; height: auto; object-fit: contain; display: block; }
/* Tall / square brand marks need more height to match the optical size of wide logos */
.client-tile--mark img { max-height: 100px; max-width: 88%; }

/* Makers */
.makers { display: grid; gap: 18px; }
.maker {
  display: grid; grid-template-columns: 200px 1fr; gap: 20px; align-items: center;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 28px; box-shadow: var(--shadow);
}
.maker h3 { color: var(--navy); font-size: 18px; }
.maker__tags { display: flex; flex-wrap: wrap; gap: 10px; }
.maker__tags span {
  background: var(--navy); color: #fff; font-size: 14px; font-weight: 500;
  padding: 8px 16px; border-radius: 999px; letter-spacing: .3px;
}

/* Hamburger toggle (hidden on desktop) */
.navtoggle { display: none; background: none; border: none; cursor: pointer; width: 44px; height: 44px; padding: 10px; }
.navtoggle span { display: block; height: 2.5px; background: var(--navy); border-radius: 2px; margin: 5px 0; transition: transform .25s ease, opacity .25s ease; }
.navtoggle.is-active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.navtoggle.is-active span:nth-child(2) { opacity: 0; }
.navtoggle.is-active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }
.nav__cta { display: none; }

/* Stats band */
.stats { background: #fff; border-bottom: 1px solid var(--line); }
.stats__inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { text-align: center; padding: 34px 16px; border-left: 1px solid var(--line); }
.stat:first-child { border-left: none; }
.stat strong { display: block; font-size: clamp(28px, 4vw, 40px); font-weight: 800; color: var(--navy); line-height: 1; letter-spacing: -1px; }
.stat span { display: block; margin-top: 8px; font-size: 14px; color: var(--muted); font-weight: 500; }

/* Certifications */
.certs { padding: 80px 0; background: var(--bg-alt); }
.certs__row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 880px; margin: 0 auto; }
.cert { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 24px; text-align: center; box-shadow: var(--shadow); transition: transform .18s ease, box-shadow .18s ease; }
.cert:hover { transform: translateY(-4px); box-shadow: 0 16px 34px rgba(10,37,64,.12); }
.cert img { height: 84px; width: auto; max-width: 100%; object-fit: contain; margin: 0 auto 16px; display: block; }
.cert p { font-size: 16px; font-weight: 700; color: var(--navy); line-height: 1.4; }
.cert p span { display: block; font-size: 13px; font-weight: 500; color: var(--muted); margin-top: 4px; }

/* Contact map */
.map { margin-top: 44px; }
.map iframe { width: 100%; height: 380px; border: 0; border-radius: var(--radius); box-shadow: var(--shadow); display: block; filter: grayscale(.2); background: var(--bg-alt); }
.map__link { display: inline-block; margin-top: 14px; font-weight: 600; color: var(--blue); }
.map__link:hover { color: var(--accent); }

/* Form error message */
.form__msg--err { color: #c0392b; }

/* Warehouse & Storage */
.wh-gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 44px; }
.wh-shot { margin: 0; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); background: #fff; position: relative; }
.wh-shot img { width: 100%; height: 230px; object-fit: cover; display: block; transition: transform .4s ease; }
.wh-shot:hover img { transform: scale(1.05); }
.wh-shot figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 26px 18px 14px; color: #fff; font-size: 14px; font-weight: 600;
  background: linear-gradient(to top, rgba(10,37,64,.82), transparent);
}
.wh-copy { max-width: 860px; margin: 0 auto 44px; text-align: center; }
.wh-copy p { color: var(--muted); font-size: 16.5px; line-height: 1.85; margin-bottom: 16px; }
.wh-copy p:last-child { margin-bottom: 0; }
.wh-copy strong { color: var(--navy); font-weight: 700; }
.wh-features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.wh-feat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; text-align: center; box-shadow: var(--shadow); transition: transform .18s ease, box-shadow .18s ease; }
.wh-feat:hover { transform: translateY(-4px); box-shadow: 0 16px 34px rgba(10,37,64,.12); }
.wh-feat__icon { font-size: 30px; }
.wh-feat h3 { color: var(--navy); font-size: 17px; margin: 12px 0 8px; }
.wh-feat p { color: var(--muted); font-size: 14px; line-height: 1.6; }

/* Responsive */
@media (max-width: 900px) {
  .maker { grid-template-columns: 1fr; gap: 12px; }
  .grid--2, .grid--3 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .certs__row { grid-template-columns: 1fr; max-width: 420px; }
  .wh-gallery { grid-template-columns: 1fr 1fr; }
  .wh-features { grid-template-columns: 1fr 1fr; }

  /* Mobile navigation */
  .navtoggle { display: block; margin-left: auto; }
  .header__cta { display: none; }
  .nav {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    box-shadow: 0 16px 30px rgba(10,37,64,.12);
    padding: 8px 0; margin: 0;
    max-height: 0; overflow: hidden; opacity: 0; pointer-events: none;
    transition: max-height .3s ease, opacity .2s ease;
  }
  .nav.is-open { max-height: 460px; opacity: 1; pointer-events: auto; }
  .nav a { padding: 14px 24px; border-bottom: 1px solid var(--bg-alt); }
  .nav a:last-child { border-bottom: none; }
  .nav__cta { display: block; margin: 10px 24px 6px; text-align: center; }
}
@media (max-width: 560px) {
  .about__cards { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .stats__inner { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(3) { border-left: none; }
  .stat:nth-child(odd) { border-left: none; }
  .stat { border-top: 1px solid var(--line); }
  .stat:nth-child(1), .stat:nth-child(2) { border-top: none; }
}