:root {
  --ajou-blue: #0b3a82;
  --ajou-deep: #082b62;
  --ajou-cyan: #00a6c8;
  --ink: #16233a;
  --muted: #627087;
  --line: #dce3ec;
  --soft: #f4f7fb;
  --white: #fff;
  --danger: #a12424;
  --success: #176b45;
  --shadow: 0 18px 45px rgba(8, 43, 98, .09);
  --radius: 18px;
  --content-width: 1180px;
  --container: var(--content-width);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: "Pretendard", "Noto Sans KR", "Apple SD Gothic Neo", system-ui, sans-serif; line-height: 1.65; word-break: keep-all; overflow-wrap: break-word; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; }
button, .button { min-height: 44px; }
:focus-visible { outline: 3px solid #f4b942; outline-offset: 3px; }
.container { width: min(calc(100% - 40px), var(--content-width)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 1000; top: 12px; left: 12px; padding: 12px 18px; background: var(--white); color: var(--ajou-blue); transform: translateY(-160%); border-radius: 8px; box-shadow: var(--shadow); }
.skip-link:focus { transform: none; }

.university-bar { color: #dbe9ff; background: var(--ajou-deep); font-size: .83rem; }
.university-bar-inner { display: flex; justify-content: space-between; align-items: center; min-height: 34px; }
.university-bar a { color: var(--white); font-weight: 700; }
.site-header { position: relative; z-index: 50; background: var(--white); border-bottom: 1px solid var(--line); }
.header-main { display: flex; align-items: center; justify-content: space-between; min-height: 92px; gap: 28px; }
.brand { display: flex; align-items: center; gap: 13px; min-width: 350px; }
.brand-mark { display: grid; place-items: center; width: 44px; height: 44px; color: var(--white); background: var(--ajou-blue); border-radius: 5px; font: 800 .92rem/1 system-ui, sans-serif; letter-spacing: -.04em; }
.brand strong { display: block; color: var(--ajou-deep); font-size: 1.25rem; letter-spacing: -.035em; }
.brand small { display: block; color: var(--muted); font-size: .69rem; line-height: 1.3; }
.site-nav { margin-left: auto; }
.main-menu { display: flex; gap: 8px; margin: 0; padding: 0; list-style: none; }
.menu-item { position: relative; }
.menu-item > a { display: flex; align-items: center; min-height: 56px; padding: 0 20px; font-weight: 700; }
.menu-item.is-active > a, .menu-item > a:hover { color: var(--ajou-blue); }
.menu-item.is-active > a::after { content: ""; position: absolute; right: 20px; bottom: 2px; left: 20px; height: 3px; background: var(--ajou-cyan); }
.submenu { visibility: hidden; position: absolute; top: calc(100% + 8px); left: 50%; min-width: 215px; margin: 0; padding: 10px; list-style: none; background: var(--white); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); opacity: 0; transform: translate(-50%, -6px); transition: .2s ease; }
.submenu::before { content: ""; position: absolute; top: -13px; right: 0; left: 0; height: 13px; }
.submenu a { display: block; padding: 9px 12px; border-radius: 7px; font-size: .92rem; }
.submenu a:hover { color: var(--ajou-blue); background: var(--soft); }
.menu-item:hover .submenu, .menu-item:focus-within .submenu, .menu-item.open .submenu { visibility: visible; opacity: 1; transform: translate(-50%, 0); }
.submenu-toggle { display: none; }
.nav-toggle { display: none; width: 46px; border: 0; background: transparent; }
.nav-toggle span:not(.sr-only), .nav-toggle span:not(.sr-only)::before, .nav-toggle span:not(.sr-only)::after { display: block; width: 26px; height: 2px; background: var(--ink); content: ""; transition: .2s; }
.nav-toggle span:not(.sr-only)::before { transform: translateY(-8px); }
.nav-toggle span:not(.sr-only)::after { transform: translateY(6px); }

.hero { position: relative; overflow: hidden; color: var(--white); background: var(--ajou-deep); }
.hero::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 74% 30%, rgba(0,166,200,.30), transparent 25%), linear-gradient(120deg, transparent 52%, rgba(255,255,255,.045) 52% 53%, transparent 53% 61%, rgba(255,255,255,.035) 61% 62%, transparent 62%); }
.hero-inner { position: relative; display: grid; grid-template-columns: 1.25fr .75fr; gap: 70px; align-items: center; min-height: 590px; padding-block: 86px; }
.eyebrow { margin: 0 0 18px; color: var(--ajou-cyan); font-size: .85rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.hero h1 { max-width: 800px; margin: 0; font-size: clamp(2.7rem, 5.5vw, 5.35rem); line-height: 1.08; letter-spacing: -.06em; }
.hero h1 em { display: block; color: #6ee3ef; font-style: normal; }
.hero-description { margin: 26px 0 0; color: #d9e7f8; font-size: 1.08rem; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; max-width: 100%; padding: 12px 22px; border: 1px solid transparent; border-radius: 8px; font-weight: 750; text-align: center; cursor: pointer; }
.button-primary { color: var(--ajou-deep); background: var(--white); }
.button-accent { color: var(--white); background: var(--ajou-blue); }
.button-outline { color: inherit; border-color: currentColor; background: transparent; }
.button-light-outline { color: var(--white); border-color: rgba(255,255,255,.55); }
.hero-panel { position: relative; padding: 35px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.22); border-radius: 22px; backdrop-filter: blur(10px); }
.hero-panel::before { content: "AI × MFG × BIZ"; display: block; margin-bottom: 28px; color: #6ee3ef; font-size: .75rem; font-weight: 800; letter-spacing: .18em; }
.hero-panel strong { display: block; margin-bottom: 12px; font-size: 1.6rem; line-height: 1.3; }
.hero-panel p { margin: 0; color: #d7e3f3; }
.hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); margin: 26px 0 0; padding: 24px 0 0; border-top: 1px solid rgba(255,255,255,.2); list-style: none; }
.hero-facts li { font-size: .78rem; text-align: center; }
.hero-facts b { display: block; color: var(--white); font-size: 1.15rem; }

.section { padding-block: 100px; }
.section-soft { background: var(--soft); }
.section-deep { color: var(--white); background: var(--ajou-deep); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 42px; }
.section-heading h2 { max-width: 760px; margin: 0; font-size: clamp(2rem, 4vw, 3.3rem); line-height: 1.17; letter-spacing: -.055em; }
.section-heading p { max-width: 470px; margin: 0; color: var(--muted); }
.section-deep .section-heading p { color: #c7d5e8; }
.kicker { display: block; margin-bottom: 12px; color: var(--ajou-cyan); font-size: .82rem; font-weight: 800; letter-spacing: .12em; }
.lead { color: #40516b; font-size: 1.12rem; }
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 58px; align-items: center; }
.intro-statement { padding: 42px; background: var(--ajou-blue); color: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); }
.intro-statement span { color: #76e3ef; font-weight: 700; }
.intro-statement strong { display: block; margin-top: 22px; font-size: 2rem; line-height: 1.3; }
.tag-list { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 26px; }
.tag { padding: 7px 12px; color: var(--ajou-blue); background: #eaf3ff; border-radius: 999px; font-size: .82rem; font-weight: 700; }

.competency-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.competency-card { position: relative; min-height: 300px; padding: 32px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 10px 30px rgba(8,43,98,.045); }
.competency-card .number { color: var(--ajou-cyan); font: 800 2.4rem/1 Georgia, serif; }
.competency-card h3 { margin: 60px 0 7px; font-size: 1.38rem; line-height: 1.35; }
.competency-card small { color: var(--ajou-blue); font-weight: 700; }
.competency-card p { color: var(--muted); }

.track-grid { display: grid; grid-template-columns: repeat(3, 1fr); overflow: hidden; border: 1px solid rgba(255,255,255,.18); border-radius: var(--radius); }
.track { padding: 36px; border-right: 1px solid rgba(255,255,255,.18); }
.track:last-child { border-right: 0; }
.track .track-no { color: #65d7e7; font-size: .8rem; font-weight: 800; }
.track h3 { margin: 28px 0 12px; font-size: 1.35rem; }
.track p { color: #cad8ea; }
.track ul { padding-left: 20px; color: #e8eef8; }

.faculty-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.faculty-card { overflow: hidden; background: var(--white); border: 1px solid var(--line); border-radius: 14px; }
.faculty-visual { display: grid; place-items: center; min-height: 160px; color: rgba(255,255,255,.85); background: linear-gradient(145deg, var(--ajou-deep), #21569d); font: 700 2.5rem/1 Georgia, serif; }
.faculty-info { padding: 24px; }
.faculty-info h3 { margin: 0 0 5px; font-size: 1.25rem; }
.faculty-info .department { margin: 0 0 16px; color: var(--ajou-blue); font-size: .88rem; font-weight: 700; }
.faculty-info .fields { margin: 0; color: var(--muted); font-size: .9rem; }
.faculty-role { display: inline-block; margin-bottom: 12px; padding: 3px 8px; color: var(--success); background: #e6f6ef; border-radius: 4px; font-size: .76rem; font-weight: 800; }

.collaboration-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 60px; align-items: center; }
.collaboration-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.collaboration-list article { padding: 24px; background: var(--white); border: 1px solid var(--line); border-radius: 12px; }
.collaboration-list h3 { margin: 0 0 8px; font-size: 1rem; }
.collaboration-list p { margin: 0; color: var(--muted); font-size: .9rem; }

.admission-band { padding-block: 75px; color: var(--white); background: var(--ajou-blue); }
.admission-inline { margin: 45px 0 26px; border-radius: var(--radius); }
.admission-inline .container { width: calc(100% - 56px); }
.admission-band-inner { display: flex; justify-content: space-between; align-items: center; gap: 35px; }
.admission-band h2 { margin: 0; font-size: clamp(1.8rem, 4vw, 3rem); letter-spacing: -.045em; }
.notice-list { margin: 0; padding: 0; border-top: 2px solid var(--ink); list-style: none; }
.notice-list li { display: grid; grid-template-columns: 110px 1fr auto; gap: 22px; align-items: center; padding: 21px 10px; border-bottom: 1px solid var(--line); }
.notice-label { color: var(--ajou-blue); font-size: .8rem; font-weight: 800; }
.notice-date { color: var(--muted); font-size: .86rem; }

.page-hero { padding: 72px 0 60px; color: var(--white); background: var(--ajou-deep); }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 28px; color: #bfcde1; font-size: .82rem; }
.breadcrumbs span::before { content: "/"; margin-right: 8px; opacity: .5; }
.page-hero h1 { margin: 0 0 10px; font-size: clamp(2.3rem, 5vw, 4.2rem); letter-spacing: -.055em; }
.page-hero p { max-width: 680px; margin: 0; color: #cdd9e9; font-size: 1.03rem; }
.subnav { position: sticky; z-index: 30; top: 0; background: var(--white); border-bottom: 1px solid var(--line); }
.subnav-list { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 0; margin-block: 0; padding: 0; list-style: none; }
.subnav-list li { flex: 0 0 auto; }
.subnav a { display: flex; align-items: center; min-height: 52px; padding: 0 21px; white-space: nowrap; font-size: .9rem; font-weight: 700; }
.subnav a.is-current { color: var(--ajou-blue); box-shadow: inset 0 -3px var(--ajou-cyan); }
.content-grid { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 65px; }
.prose h2 { margin: 55px 0 20px; font-size: 2rem; letter-spacing: -.04em; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin: 36px 0 12px; font-size: 1.25rem; }
.prose p, .prose li { color: #40516b; }
.prose li + li { margin-top: 7px; }
.prose strong { color: var(--ink); }
.sidebar-card { position: sticky; top: 82px; padding: 28px; background: var(--soft); border-radius: 14px; }
.sidebar-card h2 { margin: 0 0 12px; font-size: 1.2rem; }
.sidebar-card p { color: var(--muted); font-size: .9rem; }
.info-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.info-card { padding: 28px; background: var(--soft); border-radius: 12px; }
.info-card h3 { margin: 0 0 9px; }
.info-card p { margin: 0; color: var(--muted); }
.info-note { padding: 15px 18px; color: #41526b; background: #edf4fc; border-left: 4px solid var(--ajou-blue); font-size: .88rem; }
.warning-note { padding: 18px; color: #694c12; background: #fff7df; border: 1px solid #f0d78d; border-radius: 8px; }
.table-wrap { max-width: 100%; overflow-x: auto; margin: 26px 0; -webkit-overflow-scrolling: touch; scrollbar-width: thin; }
.table-wrap:focus-visible { outline-offset: 2px; }
.table-wide { min-width: 680px; }
table { width: 100%; border-collapse: collapse; border-top: 2px solid var(--ink); font-size: .92rem; }
th, td { padding: 15px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--soft); color: var(--ink); }

.form-shell { max-width: 900px; }
.form-section { margin-bottom: 34px; padding: 32px; border: 1px solid var(--line); border-radius: 14px; }
.form-section legend { padding: 0 10px; font-size: 1.2rem; font-weight: 800; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field-full { grid-column: 1 / -1; }
.field label, .field-label { font-weight: 700; }
.required { color: var(--danger); }
input[type="text"], input[type="email"], input[type="tel"], input[type="password"], input[type="search"], select, textarea { width: 100%; min-height: 48px; padding: 10px 13px; color: var(--ink); background: var(--white); border: 1px solid #aab6c7; border-radius: 7px; }
input[type="file"] { max-width: 100%; min-height: 48px; padding: 9px; border: 1px solid #aab6c7; border-radius: 7px; background: var(--white); }
textarea { min-height: 120px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--ajou-blue); outline: 3px solid rgba(11,58,130,.14); }
.help { margin: 0; color: var(--muted); font-size: .82rem; }
.check-row { display: flex; align-items: flex-start; gap: 10px; }
.check-row input { width: 20px; height: 20px; margin-top: 3px; }
.honeypot { position: absolute !important; left: -9999px !important; }
.error-list { margin-bottom: 28px; padding: 18px 22px; color: #6f2020; background: #fff0f0; border: 1px solid #e6b9b9; border-radius: 9px; }
.success-panel { max-width: 760px; padding: 46px; background: #edf9f4; border: 1px solid #bfe4d2; border-radius: 18px; text-align: center; }
.receipt-number { display: inline-block; max-width: 100%; margin: 18px 0; padding: 13px 20px; color: var(--ajou-deep); background: var(--white); border: 1px dashed var(--ajou-blue); border-radius: 8px; font: 800 1.25rem/1.2 monospace; overflow-wrap: anywhere; }
.flash { margin-top: 20px; padding: 14px 18px; border-radius: 8px; }
.flash-success { color: var(--success); background: #eaf8f1; }
.flash-error { color: var(--danger); background: #fff0f0; }

.admin-header { color: var(--white); background: #151d2b; }
.admin-header .container { display: flex; justify-content: space-between; align-items: center; min-height: 66px; }
.admin-header a { font-weight: 700; }
.admin-nav { display: flex; align-items: center; gap: 18px; }
.admin-nav form { margin: 0; }
.admin-nav button { min-height: 0; padding: 0; color: inherit; background: transparent; border: 0; cursor: pointer; }
.admin-nav button:hover { text-decoration: underline; }
.admin-shell { min-height: 70vh; padding-block: 55px; background: #f3f5f8; }
.admin-card { padding: 28px; background: var(--white); border: 1px solid var(--line); border-radius: 12px; }
.admin-login-card { max-width: 520px; margin-inline: auto; }
.admin-spaced-card { margin-top: 22px; }
.admin-toolbar { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }
.admin-toolbar input, .admin-toolbar select { width: auto; min-width: 180px; }
.status { display: inline-block; padding: 4px 9px; background: #e7eef8; border-radius: 999px; font-size: .78rem; font-weight: 800; }
.detail-list { display: grid; grid-template-columns: 180px 1fr; margin: 0; }
.detail-list dt, .detail-list dd { margin: 0; padding: 13px 0; border-bottom: 1px solid var(--line); }
.detail-list dt { color: var(--muted); font-weight: 700; }
.file-list { padding: 0; list-style: none; }
.file-list li { display: flex; justify-content: space-between; gap: 20px; padding: 14px 0; border-bottom: 1px solid var(--line); }

.site-footer { padding: 58px 0 24px; color: #c7d3e4; background: #0b1f3d; font-size: .88rem; }
.footer-grid { display: grid; grid-template-columns: 1.7fr .8fr .7fr; gap: 45px; }
.footer-title { color: var(--white); font-size: 1.1rem; }
.site-footer h2 { margin: 0 0 11px; color: var(--white); font-size: .88rem; }
.site-footer a:hover { color: var(--white); text-decoration: underline; }
.footer-bottom { display: flex; justify-content: space-between; gap: 25px; margin-top: 38px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); font-size: .78rem; }

@media (max-width: 980px) {
  .header-main { min-height: 78px; }
  .brand { min-width: 0; }
  .brand small { display: none; }
  .nav-toggle { display: block; cursor: pointer; }
  .main-menu { display: none; position: absolute; top: 100%; right: 0; left: 0; padding: 12px 20px 20px; background: var(--white); border-top: 1px solid var(--line); box-shadow: var(--shadow); }
  .site-nav.open .main-menu { display: block; }
  .menu-item { display: grid; grid-template-columns: 1fr 48px; border-bottom: 1px solid var(--line); }
  .menu-item > a { padding: 0 8px; }
  .menu-item.is-active > a::after { display: none; }
  .submenu-toggle { display: block; border: 0; background: transparent; font-size: 1.35rem; }
  .submenu { display: none; visibility: visible; position: static; grid-column: 1 / -1; min-width: 0; padding: 3px 0 12px 14px; border: 0; box-shadow: none; opacity: 1; transform: none; }
  .submenu a { display: flex; align-items: center; min-height: 44px; }
  .menu-item.open .submenu { display: block; transform: none; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; min-height: auto; }
  .hero-panel { max-width: 620px; }
  .competency-grid, .track-grid { grid-template-columns: 1fr; }
  .track { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.18); }
  .faculty-grid { grid-template-columns: repeat(2, 1fr); }
  .content-grid { grid-template-columns: 1fr; }
  .sidebar-card { position: static; }
}

@media (max-width: 820px) {
  .info-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .collaboration-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 700px) {
  .container { width: min(calc(100% - 28px), var(--content-width)); }
  .university-bar-inner span { display: none; }
  .brand-mark { width: 36px; height: 36px; font-size: .8rem; }
  .brand strong { font-size: 1.05rem; }
  .hero-inner { padding-block: 65px; }
  .hero h1 { font-size: clamp(2.35rem, 12.5vw, 3.6rem); }
  .hero-facts { grid-template-columns: 1fr; gap: 14px; text-align: left; }
  .hero-facts li { text-align: left; }
  .section { padding-block: 70px; }
  .section-heading { display: block; }
  .section-heading p { margin-top: 16px; }
  .intro-grid, .collaboration-grid { grid-template-columns: 1fr; gap: 30px; }
  .collaboration-list, .info-cards, .form-grid { grid-template-columns: 1fr; }
  .faculty-grid { grid-template-columns: 1fr; }
  .admission-band-inner { display: block; }
  .admission-band .button-row { margin-top: 25px; }
  .notice-list li { grid-template-columns: 76px 1fr; gap: 12px; }
  .notice-date { grid-column: 2; }
  .notice-list li > .button { grid-column: 2; justify-self: start; width: 100%; }
  .page-hero { padding-block: 52px; }
  .page-hero h1 { font-size: clamp(2.15rem, 11vw, 3rem); }
  .subnav-list { justify-content: flex-start; flex-wrap: nowrap; overflow-x: auto; scroll-padding-inline: 14px; scrollbar-width: thin; }
  .subnav a { min-height: 48px; padding-inline: 17px; }
  .form-section { padding: 24px 18px; }
  .field-full { grid-column: auto; }
  .form-shell > form > .button[type="submit"] { width: 100%; }
  .button-row .button { flex: 1 1 100%; width: 100%; }
  .admission-inline .container { width: calc(100% - 32px); }
  .footer-grid { grid-template-columns: 1fr; gap: 22px; }
  .footer-bottom { display: block; }
  .detail-list { grid-template-columns: 1fr; }
  .detail-list dt { padding-bottom: 0; border-bottom: 0; }
  .file-list li { display: block; }
  .admin-header .container { flex-wrap: wrap; gap: 8px 18px; padding-block: 12px; }
  .admin-nav { margin-left: auto; gap: 12px; font-size: .88rem; }
  .admin-shell { padding-block: 32px; }
  .admin-card { padding: 22px 16px; }
  .admin-toolbar > input, .admin-toolbar > select, .admin-toolbar > .button { width: 100%; min-width: 0; }
  .success-panel { padding: 32px 18px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

@media print {
  .site-header, .site-footer, .subnav, .button, .admin-header { display: none !important; }
  .section, .page-hero { padding: 20px 0; color: #000; background: #fff; }
  .container { width: 100%; }
}