:root {
  --navy: #0b1929;
  --navy-deep: #071321;
  --navy-raised: #111f31;
  --navy-soft: #182638;
  --gold: #c9a961;
  --gold-light: #e3c77e;
  --white: #faf8f2;
  --paper: #f1eee6;
  --muted: #a9b0b9;
  --quiet: #727d89;
  --line: rgba(201, 169, 97, 0.25);
  --line-soft: rgba(250, 248, 242, 0.09);
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --sans: "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  margin: 0;
  color: var(--white);
  background: var(--navy);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { color: inherit; font: inherit; }
::selection { color: var(--navy); background: var(--gold); }

.skip-link {
  position: fixed;
  z-index: 999;
  top: 10px;
  left: 10px;
  padding: 10px 16px;
  color: var(--navy);
  background: var(--gold-light);
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.container { width: min(calc(100% - 48px), var(--max)); margin: 0 auto; }
.container-narrow { width: min(calc(100% - 48px), 920px); margin: 0 auto; }

.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  height: 72px;
  background: rgba(7, 19, 33, 0.94);
  border-bottom: 1px solid var(--line-soft);
  backdrop-filter: blur(16px);
}
.nav-shell {
  width: min(calc(100% - 48px), 1360px);
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 40px;
}
.brand {
  flex: 0 0 auto;
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: 0.06em;
  line-height: 1;
}
.brand em { color: var(--gold); font-style: normal; }
.nav-links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-links a {
  position: relative;
  color: #c5cad0;
  font-size: 14px;
  line-height: 72px;
}
.nav-links a::after {
  position: absolute;
  content: "";
  right: 0;
  bottom: 19px;
  left: 0;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] { color: var(--white); }
.nav-links a:hover::after,
.nav-links a[aria-current="page"]::after { transform: scaleX(1); }
.nav-cta {
  flex: 0 0 auto;
  padding: 9px 17px;
  color: var(--gold-light);
  border: 1px solid var(--gold);
  font-size: 13px;
  letter-spacing: 0.08em;
  transition: color 180ms ease, background 180ms ease;
}
.nav-cta:hover { color: var(--navy); background: var(--gold); }
.menu-button {
  display: none;
  width: 40px;
  height: 40px;
  margin-left: auto;
  padding: 8px;
  border: 0;
  background: transparent;
  cursor: pointer;
}
.menu-button span {
  display: block;
  width: 22px;
  height: 1px;
  margin: 6px auto;
  background: var(--white);
  transition: transform 180ms ease, opacity 180ms ease;
}
.menu-button[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-button[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-button[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

main { overflow: hidden; }
.hero {
  position: relative;
  min-height: 780px;
  padding: 176px 0 110px;
  display: flex;
  align-items: center;
  background: var(--navy-deep);
}
.hero::after {
  position: absolute;
  content: "";
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: var(--gold);
  opacity: 0.65;
}
.hero-media {
  position: absolute;
  inset: 72px 0 0 38%;
  width: 62%;
  height: calc(100% - 72px);
  object-fit: cover;
  object-position: 54% center;
  opacity: 0.92;
}
.hero-copy {
  position: relative;
  z-index: 2;
  width: min(620px, 53%);
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 24px;
  color: var(--gold-light);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.19em;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--gold); }
.hero h1,
.page-hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(48px, 5.5vw, 76px);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1.14;
  text-wrap: balance;
}
.hero h1 em { color: var(--gold-light); font-style: normal; }
.hero-lead {
  max-width: 570px;
  margin: 30px 0 0;
  color: #d2d6db;
  font-size: 18px;
  line-height: 1.9;
}
.hero-actions,
.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}
.button {
  display: inline-flex;
  min-height: 50px;
  padding: 12px 24px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  color: var(--white);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: color 180ms ease, background 180ms ease, border-color 180ms ease, transform 180ms ease;
}
.button:hover { border-color: var(--gold); transform: translateY(-2px); }
.button-primary { color: var(--navy-deep); background: var(--gold); border-color: var(--gold); }
.button-primary:hover { background: var(--gold-light); }
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--gold-light);
  font-size: 14px;
}
.text-link::after { content: "→"; transition: transform 180ms ease; }
.text-link:hover::after { transform: translateX(4px); }
.hero-note {
  margin-top: 46px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.03em;
}

.section { position: relative; padding: 122px 0; }
.section-dark { background: var(--navy-deep); }
.section-raised { background: var(--navy-raised); }
.section-paper { color: #142234; background: var(--paper); }
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.72fr);
  gap: 72px;
  align-items: end;
  margin-bottom: 64px;
}
.section-head.single { display: block; max-width: 790px; }
.section-kicker {
  display: block;
  margin-bottom: 18px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.section h2,
.page-section h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.section-head p,
.section-intro {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}
.section-paper .section-head p,
.section-paper .section-intro { color: #596270; }

.issue-grid,
.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line-soft);
}
.issue-card,
.proof-card {
  min-height: 248px;
  padding: 38px 32px 36px;
  border-right: 1px solid var(--line-soft);
}
.issue-card:last-child,
.proof-card:last-child { border-right: 0; }
.card-number {
  display: block;
  margin-bottom: 44px;
  color: var(--gold);
  font-family: var(--serif);
  font-size: 18px;
}
.issue-card h3,
.proof-card h3,
.solution-card h3,
.layer-card h3,
.detail-block h3 {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.35;
}
.issue-card p,
.proof-card p,
.solution-card p,
.layer-card p,
.detail-block p {
  margin: 0;
  color: var(--muted);
}
.section-paper .issue-card p,
.section-paper .proof-card p { color: #616b77; }

.value-list { border-top: 1px solid var(--line); }
.value-row {
  display: grid;
  grid-template-columns: 70px minmax(250px, 0.72fr) minmax(320px, 1fr);
  gap: 42px;
  align-items: baseline;
  padding: 30px 0;
  border-bottom: 1px solid var(--line-soft);
}
.value-row span { color: var(--gold); font-family: var(--serif); font-size: 20px; }
.value-row h3 { margin: 0; font-family: var(--serif); font-size: 25px; font-weight: 600; }
.value-row p { margin: 0; color: var(--muted); }

.solution-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border: 1px solid var(--line);
}
.solution-card {
  position: relative;
  min-height: 290px;
  padding: 30px 24px;
  border-right: 1px solid var(--line-soft);
  transition: color 180ms ease, background 180ms ease;
}
.solution-card:last-child { border-right: 0; }
.solution-card:hover { background: var(--navy-soft); }
.solution-card .card-number { margin-bottom: 52px; }
.solution-card p { font-size: 14px; }
.solution-card .text-link { position: absolute; bottom: 27px; left: 24px; }

.concept-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.82fr) minmax(420px, 1.18fr);
  gap: 88px;
  align-items: center;
}
.concept-copy blockquote {
  margin: 30px 0 0;
  padding: 26px 0 26px 28px;
  border-left: 2px solid var(--gold);
  color: #e6e2d8;
  font-family: var(--serif);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.55;
}
.concept-steps { border-top: 1px solid var(--line); }
.concept-step {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line-soft);
}
.concept-step span { color: var(--gold); }
.concept-step strong { display: block; margin-bottom: 4px; font-size: 16px; }
.concept-step p { margin: 0; color: var(--muted); font-size: 14px; }

.home-showcase {
  margin-top: 90px;
  padding-top: 72px;
  border-top: 1px solid var(--line);
}
.home-showcase-head {
  display: grid;
  grid-template-columns: minmax(300px, 0.9fr) minmax(320px, 1.1fr);
  gap: 72px;
  align-items: end;
  margin-bottom: 42px;
}
.home-showcase-head .section-kicker { grid-column: 1 / -1; margin-bottom: -52px; }
.home-showcase-head h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(28px, 3.2vw, 42px);
  font-weight: 600;
  line-height: 1.35;
}
.home-showcase-head p { margin: 0; color: var(--muted); line-height: 1.9; }
.home-showcase-card {
  display: grid;
  grid-template-columns: minmax(0, 1.72fr) minmax(280px, 0.78fr);
  min-height: 410px;
  color: inherit;
  border: 1px solid var(--line);
  background: var(--navy-deep);
  transition: border-color 180ms ease, background-color 180ms ease;
}
.home-showcase-card + .home-showcase-card { margin-top: 24px; }
.home-showcase-card:hover { border-color: rgba(205, 169, 92, 0.6); background: #091726; }
.home-showcase-media {
  display: flex;
  align-items: center;
  min-width: 0;
  padding: 16px;
  background: #061421;
  overflow: hidden;
}
.home-showcase-media img {
  width: 100%;
  height: auto;
  max-height: 440px;
  object-fit: contain;
  transition: transform 320ms ease;
}
.home-showcase-card:hover .home-showcase-media img { transform: scale(1.012); }
.home-showcase-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 42px 38px;
  border-left: 1px solid var(--line-soft);
}
.home-showcase-copy > span {
  margin-bottom: 26px;
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.home-showcase-copy h4 {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 600;
  line-height: 1.45;
}
.home-showcase-copy p { margin: 0 0 34px; color: var(--muted); font-size: 14px; line-height: 1.85; }
.home-showcase-copy .text-link { margin-top: auto; }
.home-showcase-card-reverse { grid-template-columns: minmax(280px, 0.78fr) minmax(0, 1.72fr); }
.home-showcase-card-reverse .home-showcase-media { grid-column: 2; grid-row: 1; }
.home-showcase-card-reverse .home-showcase-copy { grid-column: 1; grid-row: 1; border-right: 1px solid var(--line-soft); border-left: 0; }

.proof-card { min-height: 300px; }
.proof-card .industry {
  display: block;
  margin-bottom: 46px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
}
.proof-card .text-link { margin-top: 26px; }

.reason-layout {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 88px;
}
.reason-statement {
  padding-top: 24px;
  border-top: 2px solid var(--gold);
  font-family: var(--serif);
  font-size: 30px;
  line-height: 1.55;
}
.reason-list { border-top: 1px solid var(--line-soft); }
.reason-item {
  display: grid;
  grid-template-columns: 44px 210px 1fr;
  gap: 22px;
  padding: 25px 0;
  border-bottom: 1px solid var(--line-soft);
}
.reason-item span { color: var(--gold); }
.reason-item strong { font-family: var(--serif); font-size: 18px; font-weight: 600; }
.reason-item p { margin: 0; color: var(--muted); }

.mission-section { padding: 112px 0; background: var(--paper); color: #102033; }
.mission-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 1px solid #b69b60; border-bottom: 1px solid rgba(16,32,51,0.15); }
.mission-item { padding: 58px 56px 64px 0; }
.mission-item + .mission-item { padding-left: 56px; border-left: 1px solid rgba(16,32,51,0.15); }
.mission-item small { color: #9a7b38; font-size: 12px; font-weight: 700; letter-spacing: 0.2em; }
.mission-item p { margin: 22px 0 0; font-family: var(--serif); font-size: clamp(30px, 3.5vw, 46px); line-height: 1.45; }

.routing-section { padding: 72px 0 96px; background: var(--navy-deep); }
.routing-title { margin: 0 0 34px; font-family: var(--serif); font-size: 30px; font-weight: 600; }
.route-grid { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); }
.route-card {
  min-height: 160px;
  padding: 28px 30px;
  border-right: 1px solid var(--line-soft);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: background 180ms ease;
}
.route-card:last-child { border-right: 0; }
.route-card:hover { background: var(--navy-raised); }
.route-card small { color: var(--muted); }
.route-card strong { font-family: var(--serif); font-size: 21px; font-weight: 600; }
.route-card span { color: var(--gold); }

.page-hero {
  padding: 172px 0 92px;
  background: var(--navy-deep);
  border-bottom: 1px solid var(--line);
}
.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(320px, 0.78fr) minmax(520px, 1.22fr);
  gap: 72px;
  align-items: center;
}
.page-hero h1 { font-size: clamp(46px, 5vw, 68px); }
.page-hero .hero-lead { margin-bottom: 32px; }
.visual-frame { padding: 10px; border: 1px solid var(--line); background: #061421; }
.visual-frame img { width: 100%; height: auto; }
.visual-caption { display: flex; justify-content: space-between; gap: 24px; padding: 14px 8px 5px; color: var(--quiet); font-size: 12px; }

.page-section { padding: 108px 0; }
.page-section + .page-section { border-top: 1px solid var(--line-soft); }
.page-intro-grid {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 90px;
  align-items: start;
}
.page-intro-grid > p { margin: 0; color: var(--muted); font-size: 18px; line-height: 1.95; }
.detail-list { margin-top: 60px; border-top: 1px solid var(--line); }
.detail-block {
  display: grid;
  grid-template-columns: 80px 250px 1fr;
  gap: 30px;
  padding: 34px 0;
  border-bottom: 1px solid var(--line-soft);
}
.detail-block > span { color: var(--gold); font-family: var(--serif); font-size: 18px; }
.detail-block h3 { font-size: 21px; }
.detail-meta { margin-top: 12px; color: var(--quiet); font-size: 13px; }

.layer-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line-soft); }
.layer-card { min-height: 260px; padding: 32px; border-right: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.layer-card .card-number { margin-bottom: 40px; }

.student-case-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line-soft);
}
.student-case-filters { display: flex; flex-wrap: wrap; gap: 9px; }
.student-case-filters button {
  min-height: 38px;
  padding: 0 15px;
  border: 1px solid var(--line-soft);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}
.student-case-filters button:hover,
.student-case-filters button[aria-pressed="true"] { border-color: var(--gold); color: var(--gold-light); background: rgba(205,169,92,.08); }
.student-case-toolbar > p { margin: 0; color: var(--quiet); font-size: 13px; white-space: nowrap; }
.student-case-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.student-case-card {
  display: flex;
  min-width: 0;
  min-height: 460px;
  flex-direction: column;
  padding: 28px;
  border: 1px solid var(--line-soft);
  background: var(--navy-raised);
}
.student-case-card-top { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 28px; }
.student-case-card-top > span { color: var(--gold-light); font-size: 11px; font-weight: 700; letter-spacing: .12em; }
.student-case-card-top > small { color: var(--quiet); text-align: right; }
.student-case-card h3 { margin: 0 0 24px; font-size: 23px; line-height: 1.5; }
.student-case-route { display: grid; grid-template-columns: 1fr 20px 1fr; gap: 12px; padding: 20px 0; border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.student-case-route > span { align-self: center; color: var(--gold); text-align: center; }
.student-case-route small { display: block; margin-bottom: 8px; color: var(--gold); font-size: 11px; letter-spacing: .08em; }
.student-case-route p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.student-case-card blockquote { margin: 24px 0; color: #d7dbe0; font-family: var(--serif); font-size: 17px; line-height: 1.75; }
.student-case-actions { display: flex; flex-wrap: wrap; gap: 18px; margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line-soft); }
.student-case-action { color: var(--gold-light); font-size: 13px; font-weight: 700; }
.student-case-video { color: #eef1f4; }
.student-case-more { display: flex; justify-content: center; margin-top: 38px; }
.student-case-more [hidden] { display: none; }
.student-case-empty { grid-column: 1 / -1; margin: 0; padding: 28px; border: 1px solid var(--line-soft); color: var(--muted); text-align: center; }

.principle-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.principle-card { padding: 34px; border: 1px solid var(--line-soft); }
.principle-card strong { display: block; margin-bottom: 12px; font-family: var(--serif); font-size: 22px; }
.principle-card p { margin: 0; color: var(--muted); }

.about-lead { max-width: 860px; margin: 0 auto; text-align: center; }
.about-lead p { color: var(--muted); font-size: 19px; }
.about-facts { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 68px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line-soft); }
.about-fact { min-height: 190px; padding: 30px 24px; border-right: 1px solid var(--line-soft); }
.about-fact:last-child { border-right: 0; }
.about-fact strong { display: block; margin-bottom: 20px; color: var(--gold); font-family: var(--serif); font-size: 28px; }
.about-fact span { color: var(--muted); }

.contact-grid {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(360px, 1.1fr);
  gap: 72px;
  align-items: start;
}
.contact-card { padding: 42px; border: 1px solid var(--line); background: var(--navy-raised); }
.contact-card h2 { margin: 0 0 16px; font-family: var(--serif); font-size: 30px; font-weight: 600; }
.contact-card > p { margin: 0; color: var(--muted); }
.contact-steps { margin: 34px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line-soft); }
.contact-steps li { padding: 18px 0; border-bottom: 1px solid var(--line-soft); color: #d5d9de; }
.contact-steps span { display: inline-block; width: 38px; color: var(--gold); }
.qr-panel { display: grid; grid-template-columns: 180px 1fr; gap: 28px; align-items: center; margin-top: 34px; }
.qr-panel img { width: 180px; height: 180px; padding: 8px; background: #fff; }
.qr-panel strong { display: block; margin-bottom: 8px; font-family: var(--serif); font-size: 21px; }
.qr-panel p { margin: 0; color: var(--muted); font-size: 14px; }

.site-footer { padding: 64px 0 38px; background: #06111d; border-top: 1px solid var(--line); }
.footer-top { display: grid; grid-template-columns: 1fr auto; gap: 64px; align-items: start; }
.footer-brand { max-width: 420px; }
.footer-brand .brand { display: inline-block; margin-bottom: 20px; }
.footer-brand p { margin: 0; color: var(--muted); }
.footer-links { display: grid; grid-template-columns: repeat(2, minmax(120px, 1fr)); gap: 10px 36px; color: #b8bec6; font-size: 14px; }
.footer-links a:hover { color: var(--gold-light); }
.footer-bottom { margin-top: 54px; padding-top: 24px; display: flex; justify-content: space-between; gap: 24px; border-top: 1px solid var(--line-soft); color: var(--quiet); font-size: 12px; }

.fade-up { opacity: 1; transform: none; }
.js .fade-up { opacity: 1; transform: none; transition: opacity 550ms ease, transform 550ms ease; }
.js .fade-up.is-visible { opacity: 1; transform: none; }

@media (max-width: 1080px) {
  .nav-links { gap: 22px; }
  .hero-media { right: 0; left: 30%; width: 70%; opacity: 0.66; }
  .hero-copy { width: min(650px, 68%); }
  .solution-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-card { border-bottom: 1px solid var(--line-soft); }
  .solution-card:nth-child(2n) { border-right: 0; }
  .solution-card:last-child { grid-column: 1 / -1; min-height: 230px; }
  .page-hero-grid { grid-template-columns: 1fr; }
  .page-hero-copy { max-width: 820px; }
  .about-facts { grid-template-columns: repeat(2, 1fr); }
  .about-fact:nth-child(2) { border-right: 0; }
  .about-fact:nth-child(-n+2) { border-bottom: 1px solid var(--line-soft); }
  .student-case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .site-header { height: 64px; }
  .nav-shell { width: min(calc(100% - 32px), 1360px); }
  .menu-button { display: block; }
  .nav-cta { margin-left: 4px; }
  .nav-links {
    position: fixed;
    inset: 64px 0 auto;
    height: calc(100vh - 64px);
    padding: 24px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--navy-deep);
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 0 6px; border-bottom: 1px solid var(--line-soft); font-family: var(--serif); font-size: 22px; line-height: 68px; }
  .nav-links a::after { display: none; }
  .hero { min-height: 760px; padding: 132px 0 84px; display: flex; isolation: isolate; }
  .hero::before {
    position: absolute;
    z-index: 1;
    content: "";
    inset: 64px 0 0;
    background: rgba(5, 16, 28, 0.72);
  }
  .hero .container { position: relative; z-index: 2; }
  .hero-copy { width: min(650px, 86%); padding-bottom: 0; }
  .hero h1 { font-size: clamp(42px, 11vw, 64px); }
  .hero-media { position: absolute; inset: 64px 0 0; width: 100%; height: calc(100% - 64px); object-position: 64% center; opacity: 0.88; }
  .hero-note { margin-top: 34px; }
  .section { padding: 82px 0; }
  .section-head,
  .concept-grid,
  .reason-layout,
  .page-intro-grid { grid-template-columns: 1fr; gap: 30px; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .section-head { margin-bottom: 46px; }
  .issue-grid,
  .proof-grid { grid-template-columns: 1fr; }
  .issue-card,
  .proof-card { border-right: 0; border-bottom: 1px solid var(--line-soft); }
  .value-row { grid-template-columns: 54px 1fr; gap: 18px; }
  .value-row p { grid-column: 2; }
  .concept-grid { gap: 56px; }
  .home-showcase { margin-top: 72px; padding-top: 58px; }
  .home-showcase-head { grid-template-columns: 1fr; gap: 22px; }
  .home-showcase-head .section-kicker { grid-column: auto; margin-bottom: 0; }
  .home-showcase-card,
  .home-showcase-card-reverse { grid-template-columns: 1fr; min-height: auto; }
  .home-showcase-card .home-showcase-media,
  .home-showcase-card-reverse .home-showcase-media { grid-column: 1; grid-row: 1; padding: 10px; }
  .home-showcase-card .home-showcase-copy,
  .home-showcase-card-reverse .home-showcase-copy { grid-column: 1; grid-row: 2; padding: 30px 26px 34px; border-top: 1px solid var(--line-soft); border-right: 0; border-left: 0; }
  .home-showcase-copy .text-link { margin-top: 0; }
  .reason-layout { gap: 52px; }
  .reason-item { grid-template-columns: 38px 1fr; }
  .reason-item p { grid-column: 2; }
  .mission-grid { grid-template-columns: 1fr; }
  .mission-item { padding: 44px 0; }
  .mission-item + .mission-item { padding-left: 0; border-top: 1px solid rgba(16,32,51,0.15); border-left: 0; }
  .route-grid { grid-template-columns: 1fr; }
  .route-card { border-right: 0; border-bottom: 1px solid var(--line-soft); }
  .page-hero { padding: 134px 0 70px; }
  .detail-block { grid-template-columns: 50px 1fr; }
  .detail-block > div { grid-column: 2; }
  .layer-grid { grid-template-columns: repeat(2, 1fr); }
  .principle-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .container,
  .container-narrow { width: min(calc(100% - 36px), var(--max)); }
  .brand { font-size: 20px; }
  .nav-cta { padding: 7px 10px; font-size: 12px; }
  .hero { min-height: 720px; padding-top: 112px; }
  .hero::before { background: rgba(5, 16, 28, 0.78); }
  .hero-copy { width: 100%; }
  .hero h1,
  .page-hero h1 { font-size: clamp(38px, 11vw, 50px); line-height: 1.2; }
  .hero-lead { font-size: 16px; }
  .hero-actions .button { width: 100%; }
  .hero-media { height: calc(100% - 64px); min-height: 0; object-position: 66% center; }
  .section h2,
  .page-section h2 { font-size: 34px; }
  .solution-grid { grid-template-columns: 1fr; }
  .solution-card,
  .solution-card:nth-child(2n) { border-right: 0; }
  .solution-card:last-child { grid-column: auto; }
  .value-row { grid-template-columns: 38px 1fr; }
  .value-row h3 { font-size: 21px; }
  .concept-copy blockquote { font-size: 25px; }
  .home-showcase-head h3 { font-size: 31px; }
  .home-showcase-copy h4 { font-size: 25px; }
  .mission-item p { font-size: 30px; }
  .page-hero-grid { gap: 46px; }
  .visual-frame { margin-right: -18px; margin-left: -18px; padding: 5px; }
  .visual-caption { display: block; }
  .visual-caption span { display: block; }
  .layer-grid { grid-template-columns: 1fr; }
  .student-case-toolbar { align-items: flex-start; flex-direction: column; }
  .student-case-toolbar > p { white-space: normal; }
  .student-case-grid { grid-template-columns: 1fr; }
  .student-case-card { min-height: 0; padding: 24px 20px; }
  .student-case-route { grid-template-columns: 1fr; }
  .student-case-route > span { justify-self: start; transform: rotate(90deg); }
  .about-facts { grid-template-columns: 1fr; }
  .about-fact { border-right: 0; border-bottom: 1px solid var(--line-soft); }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
  .contact-card { padding: 30px 24px; }
  .qr-panel { grid-template-columns: 132px 1fr; gap: 18px; }
  .qr-panel img { width: 132px; height: 132px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .js .fade-up { opacity: 1; transform: none; }
}