:root {
  --blue: #063c85;
  --blue-2: #0c58b5;
  --sky: #1387c0;
  --gold: #ffc209;
  --gold-2: #fac75e;
  --cream: #faedd1;
  --paper: #f4f8fd;
  --ink: #0b2a55;
  --muted: #5c6f89;
  --line: #d9e7f8;
  --purple: #7953b1;
  --green: #117c0d;
  --red: #aa2b3a;
  --orange: #f4520d;
  --navy: #28314e;
  --shadow: 0 16px 34px rgba(8, 41, 92, .13);
}

* { box-sizing: border-box; }
* { min-width: 0; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
p, h1, h2, h3 { margin-top: 0; }
figure { margin: 0; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  padding: 0 clamp(18px, 4vw, 56px);
  color: #fff;
  background: linear-gradient(90deg, #06275a, #074ca5);
  box-shadow: 0 10px 22px rgba(5, 37, 82, .18);
}
.brand { font-size: 28px; font-weight: 900; letter-spacing: 0; }
.site-nav { display: flex; align-items: center; gap: 19px; font-size: 14px; font-weight: 800; }
.site-nav a { height: 68px; display: inline-flex; align-items: center; border-bottom: 4px solid transparent; opacity: .95; }
.site-nav a:hover, .site-nav a.active { color: var(--gold-2); border-bottom-color: var(--gold); }
.nav-toggle { display: none; color: #fff; background: transparent; border: 1px solid rgba(255,255,255,.36); border-radius: 8px; padding: 7px 11px; font-size: 22px; }

.hero {
  position: relative;
  overflow: hidden;
  min-height: 600px;
  padding: 72px 0 92px;
  color: #fff;
  background:
    radial-gradient(circle at 77% 16%, rgba(19,135,192,.45), transparent 34%),
    linear-gradient(120deg, #eff7ff 0%, #eff7ff 49%, #ddecff 100%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0 38% 0 0;
  background: linear-gradient(135deg, #073377, #0c58b5);
  clip-path: ellipse(105% 92% at 0% 38%);
}
.hero::after {
  content: "";
  position: absolute;
  left: -4%;
  right: -4%;
  bottom: 16px;
  height: 44px;
  border-bottom: 8px solid var(--gold);
  border-radius: 50%;
  transform: rotate(-2deg);
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(440px, 1fr);
  gap: 54px;
  align-items: center;
}
.eyebrow { margin-bottom: 14px; color: var(--gold); font-weight: 900; }
h1 {
  max-width: 720px;
  width: 100%;
  margin-bottom: 18px;
  font-size: clamp(42px, 5vw, 70px);
  line-height: 1.12;
  letter-spacing: 0;
}
.lead {
  max-width: 720px;
  width: 100%;
  color: rgba(255,255,255,.92);
  font-size: 22px;
  font-weight: 800;
  overflow-wrap: anywhere;
}
.badges { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 28px; }
.badges span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border: 1px solid rgba(255,255,255,.54);
  border-radius: 999px;
  background: rgba(255,255,255,.11);
  font-weight: 800;
}
.badges span::before {
  content: "";
  width: 8px;
  height: 8px;
  border: 2px solid var(--gold);
  border-radius: 50%;
}
.btn-row { display: flex; flex-wrap: wrap; gap: 16px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 24px;
  border-radius: 9px;
  border: 0;
  font-weight: 900;
  cursor: pointer;
}
.btn-gold { color: #08295c; background: linear-gradient(180deg, #ffe28c, #f6b63b); box-shadow: 0 12px 22px rgba(255,194,9,.26); }
.btn-blue { color: #fff; background: #063c85; box-shadow: 0 12px 22px rgba(6,60,133,.18); }
.btn-ghost { color: #fff; border: 1px solid rgba(255,255,255,.62); background: rgba(255,255,255,.08); }

.hero-media { position: relative; min-height: 420px; }
.hero-main {
  position: absolute;
  inset: 0 0 82px 8%;
  overflow: hidden;
  border: 7px solid rgba(255,255,255,.95);
  border-radius: 20px;
  box-shadow: 0 22px 44px rgba(5,36,82,.22);
}
.hero-main img, .hero-small img { width: 100%; height: 100%; object-fit: cover; }
.hero-small {
  position: absolute;
  overflow: hidden;
  border: 7px solid #fff;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 18px 34px rgba(5,36,82,.24);
}
.hero-small.one { left: 0; bottom: 34px; width: 38%; height: 34%; }
.hero-small.two { right: 2%; bottom: 0; width: 39%; height: 36%; }

.section { padding: 58px 0; }
.section.soft { background: linear-gradient(180deg, #fff, #eef6ff); }
.section-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 34px;
  text-align: center;
}
.section-title::before, .section-title::after {
  content: "";
  width: 72px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold));
}
.section-title::after { background: linear-gradient(90deg, var(--gold), transparent); }
.section-title span { color: rgba(6,60,133,.38); font: 900 34px Georgia, serif; }
.section-title h2 { margin: 0; font-size: clamp(28px, 3vw, 42px); line-height: 1.2; }

.contact-strip {
  position: relative;
  z-index: 2;
  margin-top: -46px;
  padding-bottom: 26px;
}
.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.contact-card {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  min-height: 108px;
  padding: 20px 24px;
  color: #fff;
  background: linear-gradient(135deg, #0a56b3, #063c85);
  border-radius: 12px;
  border-right: 14px solid var(--gold-2);
  box-shadow: var(--shadow);
}
.round-icon {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  color: var(--blue);
  background: #fff;
  border-radius: 50%;
  font-weight: 900;
  font-size: 23px;
}
.contact-card p { margin: 0; color: rgba(255,255,255,.84); font-weight: 800; }
.contact-card strong { font-size: 22px; line-height: 1.25; }
.contact-card strong, .contact-card p { overflow-wrap: anywhere; }

.about-grid {
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 48px;
  align-items: center;
}
.photo-frame {
  overflow: hidden;
  border-radius: 16px;
  box-shadow: var(--shadow);
  background: #fff;
}
.photo-frame img { width: 100%; height: 100%; min-height: 330px; object-fit: cover; }
.about-text h2 { margin-bottom: 14px; font-size: 34px; }
.about-text p { color: var(--muted); font-size: 17px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 22px; }
.stat {
  padding: 16px 12px;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}
.stat strong { display: block; color: var(--blue); font-size: 22px; line-height: 1; }
.stat span { color: var(--muted); font-size: 13px; font-weight: 800; }

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.service-card {
  position: relative;
  min-height: 166px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 8px 22px rgba(8,41,92,.07);
  overflow: hidden;
}
.service-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 5px;
  background: var(--accent, var(--blue));
}
.service-card b { color: var(--accent, var(--blue)); font-size: 18px; }
.service-card h3 { margin: 12px 0 8px; font-size: 22px; }
.service-card p { margin: 0; color: var(--muted); font-weight: 700; }
.service-card.featured {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 170px;
  gap: 18px;
  align-items: center;
  min-height: 210px;
}
.service-card img {
  width: 100%;
  height: 136px;
  object-fit: cover;
  border-radius: 10px;
}
.service-card.featured img { height: 168px; }
.accent-degree { --accent: var(--blue); }
.accent-skill { --accent: var(--green); }
.accent-drone { --accent: var(--sky); }
.accent-korea { --accent: var(--purple); }
.accent-cert { --accent: var(--navy); }
.accent-exam { --accent: var(--red); }
.accent-special { --accent: var(--orange); }
.accent-care { --accent: #f06a3a; }

.major-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.major-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--shadow);
}
.major-card img { width: 100%; height: 276px; object-fit: cover; }
.major-body { padding: 28px; }
.major-card h3 { margin-bottom: 10px; color: var(--blue); font-size: 34px; }
.major-card.korea h3 { color: var(--purple); }
.major-body p { color: var(--muted); }
.check-list { display: grid; gap: 6px; padding: 0; margin: 16px 0 22px; list-style: none; color: var(--ink); font-weight: 800; }
.check-list li::before { content: ""; display: inline-block; width: 7px; height: 7px; margin-right: 9px; border-radius: 50%; background: var(--gold); }

.scene-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}
.scene-card {
  position: relative;
  min-height: 176px;
  overflow: hidden;
  border: 5px solid #fff;
  border-radius: 14px;
  box-shadow: 0 10px 22px rgba(8,41,92,.12);
}
.scene-card.big { grid-column: span 2; min-height: 210px; }
.scene-card img { width: 100%; height: 100%; object-fit: cover; }
.scene-card span {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 9px 12px;
  color: #fff;
  text-align: center;
  font-weight: 900;
  background: linear-gradient(180deg, transparent, rgba(6,60,133,.88));
}

.flow {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}
.flow-step {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 142px;
  padding: 18px 10px;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 8px 18px rgba(8,41,92,.07);
}
.flow-step:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -13px;
  top: 50%;
  width: 18px;
  height: 18px;
  border-top: 4px solid #9db7d8;
  border-right: 4px solid #9db7d8;
  transform: translateY(-50%) rotate(45deg);
}
.flow-step i {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 10px;
  color: #fff;
  background: var(--blue);
  border-radius: 50%;
  font-style: normal;
  font-weight: 900;
}
.flow-step strong { display: block; font-size: 17px; }
.flow-step p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }

.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.news-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 8px 22px rgba(8,41,92,.08);
}
.news-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.news-body { padding: 20px; }
.tag { display: inline-flex; margin-bottom: 10px; padding: 5px 10px; color: #fff; background: var(--blue); border-radius: 999px; font-size: 12px; font-weight: 900; }
.news-body h3 { font-size: 20px; }
.news-body p { color: var(--muted); }

.faq-wrap { display: grid; grid-template-columns: 1.2fr .8fr; gap: 26px; align-items: stretch; }
.faq-list { display: grid; gap: 12px; }
details {
  border: 1px solid #cfe0f5;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 7px 18px rgba(8,41,92,.06);
}
summary { padding: 15px 18px; color: var(--blue); font-weight: 900; cursor: pointer; }
details p { margin: 0; padding: 0 18px 16px; color: var(--muted); }
.faq-image { overflow: hidden; border-radius: 14px; box-shadow: var(--shadow); }
.faq-image img { width: 100%; height: 100%; min-height: 250px; object-fit: cover; }

.contact-band {
  padding: 50px 0;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(6,39,90,.96), rgba(6,76,166,.96)),
    linear-gradient(90deg, #06275a, #074ca5);
}
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 36px; align-items: start; }
.contact-band h2 { margin-bottom: 18px; font-size: 36px; }
.contact-line { display: grid; gap: 12px; color: rgba(255,255,255,.9); font-size: 18px; font-weight: 800; }
.contact-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  padding: 22px;
  border-radius: 14px;
  background: rgba(255,255,255,.12);
}
.contact-form label { display: grid; gap: 7px; font-weight: 900; }
.contact-form .wide, .contact-form textarea, .contact-form button { grid-column: 1 / -1; }
input, select, textarea { width: 100%; border: 0; border-radius: 8px; padding: 13px 14px; color: var(--ink); font: inherit; }

.site-footer { padding: 28px 0 34px; color: #fff; background: #06275a; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.slogan { width: 100%; margin-top: 8px; color: var(--gold-2); text-align: center; font-size: 28px; font-weight: 900; letter-spacing: 3px; }

.page-hero { min-height: 420px; padding: 62px 0 82px; }
.page-hero .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(360px, .85fr); }
.page-hero h1 { font-size: clamp(38px, 5vw, 62px); }
.content-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.info-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 8px 20px rgba(8,41,92,.07);
}
.info-card h3 { color: var(--blue); }
.info-card p { color: var(--muted); margin-bottom: 0; }

.project-page { --theme: var(--blue); --theme-soft: #eef6ff; }
.project-drone { --theme: #1387c0; --theme-soft: #eaf7ff; }
.project-korea { --theme: #7953b1; --theme-soft: #f5efff; }
.project-degree { --theme: #063c85; --theme-soft: #eef6ff; }
.project-skills { --theme: #117c0d; --theme-soft: #eef9ec; }
.project-certificate { --theme: #28314e; --theme-soft: #f1f3f8; }
.project-exam { --theme: #aa2b3a; --theme-soft: #fff0f2; }
.project-special { --theme: #f4520d; --theme-soft: #fff2ea; }
.project-care { --theme: #e75d3f; --theme-soft: #fff2ed; }
.project-page .hero { background: linear-gradient(135deg, var(--theme), #063c85); }
.project-page .hero::before { background: linear-gradient(135deg, var(--theme), #063c85); }
.project-page .section-title span,
.project-page .info-card h3,
.project-page .major-card h3 { color: var(--theme); }
.project-page .info-card { border-top: 5px solid var(--theme); }
.project-page .section.soft { background: linear-gradient(180deg, #fff, var(--theme-soft)); }
.detail-visual {
  overflow: hidden;
  border: 6px solid #fff;
  border-radius: 18px;
  box-shadow: var(--shadow);
}
.detail-visual img { width: 100%; height: 420px; object-fit: cover; }
.intro-panel {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 32px;
  align-items: center;
}
.definition-box {
  padding: 28px;
  border-left: 8px solid var(--theme);
  border-radius: 16px;
  background: #fff;
  box-shadow: var(--shadow);
}
.definition-box h2 { margin-bottom: 14px; text-align: left; font-size: 34px; }
.definition-box p { color: var(--muted); font-size: 17px; }
.pill-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.pill-list span { padding: 7px 12px; color: var(--theme); border: 1px solid color-mix(in srgb, var(--theme) 32%, #fff); border-radius: 999px; background: var(--theme-soft); font-weight: 900; }
.module-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.module-card {
  min-height: 190px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 8px 20px rgba(8,41,92,.07);
}
.module-card h3 { color: var(--theme); }
.module-card p { color: var(--muted); }
.check-panel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  padding: 24px;
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--shadow);
}
.check-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(180deg, #fff, var(--theme-soft));
  font-weight: 800;
}
.check-item i {
  display: grid;
  place-items: center;
  flex: 0 0 26px;
  width: 26px;
  height: 26px;
  color: #fff;
  background: var(--theme);
  border-radius: 50%;
  font-style: normal;
  font-size: 13px;
}
.project-cta {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 28px;
  color: #fff;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--theme), #063c85);
  box-shadow: var(--shadow);
}
.project-cta h2 { margin: 0; text-align: left; }
.project-cta h2::before, .project-cta h2::after { display: none; }
.project-cta p { margin: 8px 0 0; color: rgba(255,255,255,.86); }

@media (max-width: 1100px) {
  .site-nav { gap: 12px; font-size: 13px; }
  .hero-grid, .about-grid, .contact-grid, .faq-wrap { grid-template-columns: 1fr; }
  .hero::before { inset: 0; clip-path: none; }
  .hero-media { min-height: 430px; }
  .service-grid, .content-grid { grid-template-columns: repeat(2, 1fr); }
  .major-grid, .contact-cards { grid-template-columns: 1fr; }
  .intro-panel, .project-cta { grid-template-columns: 1fr; }
  .module-grid { grid-template-columns: repeat(2, 1fr); }
  .scene-grid { grid-template-columns: repeat(3, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); }
  .flow-step:nth-child(3)::after { display: none; }
}

@media (max-width: 760px) {
  .site-header { height: 64px; }
  .brand { font-size: 23px; }
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: absolute;
    top: 64px;
    right: 16px;
    left: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    border-radius: 12px;
    background: #06316f;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { height: auto; padding: 12px; }
  .container { width: calc(100% - 52px); }
  .hero { min-height: auto; padding: 44px 0 76px; }
  h1 { max-width: 312px; font-size: 26px; line-height: 1.22; word-break: break-all; }
  .lead { max-width: 300px; font-size: 16px; word-break: break-all; }
  .hero-media { min-height: 330px; }
  .hero-main { inset: 0 0 54px 0; border-width: 5px; }
  .hero-small { border-width: 5px; }
  .hero-small.one { width: 46%; height: 32%; }
  .hero-small.two { width: 46%; height: 34%; }
  .section { padding: 44px 0; }
  .section-title { gap: 10px; }
  .section-title::before, .section-title::after { width: 28px; }
  .section-title h2 { font-size: 26px; }
  .stats, .service-grid, .content-grid, .news-grid, .contact-form { grid-template-columns: 1fr; }
  .module-grid, .check-panel { grid-template-columns: 1fr; }
  .detail-visual img { height: 260px; }
  .service-card.featured { grid-column: span 1; grid-template-columns: 1fr; }
  .service-card.featured img, .service-card img { height: 190px; }
  .scene-grid { grid-template-columns: 1fr; }
  .scene-card, .scene-card.big { grid-column: auto; min-height: 220px; }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .flow-step::after { display: none; }
  .major-card img { height: 230px; }
  .contact-card { grid-template-columns: 58px minmax(0, 1fr); padding: 18px; }
  .round-icon { width: 56px; height: 56px; }
  .contact-card strong { display: block; font-size: 18px; word-break: break-all; overflow-wrap: anywhere; }
  .slogan { font-size: 22px; }
}