:root {
  --ink: #111827;
  --muted: #66758a;
  --line: #e5e7eb;
  --blue: #1f5fbf;
  --blue-dark: #0b2f6b;
  --blue-deep: #071f49;
  --mist: #f7f8fa;
  --navy-gradient: linear-gradient(135deg, #071f49 0%, #0b2f6b 52%, #173f7a 100%);
  --shadow: 0 18px 44px rgba(17, 24, 39, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", Inter, system-ui, sans-serif;
  color: #18181b;
  background: #fff;
}

h1,
h2,
h3,
h4,
p {
  line-break: strict;
  word-break: auto-phrase;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 76px;
  padding: 14px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgba(229, 231, 235, 0.95);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--blue-deep);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  font-size: 13px;
  font-weight: 900;
  background: var(--navy-gradient);
  box-shadow: 0 12px 26px rgba(7, 31, 73, 0.22);
}

.brand-name,
.brand-sub {
  display: block;
}

.brand-name {
  color: var(--blue-deep);
  font-size: 28px;
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1.1;
}

.brand-sub {
  margin-top: 7px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
  line-height: 1.35;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--blue-deep);
  font-size: 13px;
  font-weight: 800;
}

.nav-actions a {
  text-decoration: none;
}

.nav-button {
  padding: 11px 22px;
  border-radius: 999px;
  color: #fff;
  background: var(--navy-gradient);
  box-shadow: 0 12px 24px rgba(7, 31, 73, 0.2);
}

.hero {
  padding: clamp(96px, 12vw, 150px) 0;
  border-bottom: 1px solid var(--line);
  text-align: center;
  background: #fff;
}

.hero-inner,
.section-inner {
  width: min(1000px, calc(100% - 40px));
  margin: 0 auto;
}

.hero h1 {
  margin: 0;
  color: #18181b;
  font-family: Inter, "Noto Sans JP", sans-serif;
  font-size: clamp(64px, 8vw, 104px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  margin: 42px 0 0;
  color: #888;
  font-family: "Noto Sans JP", Inter, sans-serif;
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 600;
  line-height: 1.3;
}

.section-heading h2 {
  margin: 12px 0 0;
  color: var(--blue-deep);
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 900;
  line-height: 1.35;
}

.hero-copy {
  max-width: 650px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 18px;
  font-weight: 600;
  line-height: 2;
}

.section-label {
  margin: 0;
  color: #6b7280;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.centered {
  text-align: center;
}

.vision,
.why-kobe,
.roadmap {
  padding: clamp(76px, 9vw, 112px) 0;
}

.why-kobe,
.roadmap {
  background: #fff;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 38px;
}

.section-heading.centered {
  max-width: 820px;
  margin: 0 auto 42px;
}

.vision-model {
  display: grid;
  gap: 22px;
}

.model-head {
  padding: 32px 0 38px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  background: #fff;
}

.model-head p,
.strip-label {
  margin: 0;
  color: #8a93a3;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.model-head h3 {
  margin: 14px 0 0;
  max-width: 1040px;
  color: var(--blue-deep);
  font-size: clamp(20px, 2.1vw, 28px);
  line-height: 1.9;
  letter-spacing: 0.01em;
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.model-card {
  min-height: 180px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 1px 0 rgba(17, 24, 39, 0.04);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.model-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: #fff;
  font-family: Inter, "Noto Sans JP", sans-serif;
  font-size: 12px;
  font-weight: 900;
  background: var(--navy-gradient);
}

.model-card h4 {
  margin: 12px 0 8px;
  color: var(--blue-deep);
  font-size: 28px;
  line-height: 1.45;
}

.model-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.65;
}

.model-card ul {
  display: grid;
  gap: 8px;
  max-height: 0;
  padding: 0;
  margin: 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.55;
  list-style: none;
  opacity: 0;
  transition: max-height 0.25s ease, margin 0.25s ease, opacity 0.25s ease;
}

.model-card li::before {
  content: "☑︎";
  display: inline-block;
  margin-right: 7px;
  color: var(--blue-deep);
  font-size: 12px;
  vertical-align: 0;
}

.model-card:hover,
.model-card:focus-within {
  transform: translateY(-8px);
  border-color: #c7ccd4;
  box-shadow: 0 24px 60px rgba(17, 24, 39, 0.14);
}

.model-card:hover ul,
.model-card:focus-within ul {
  max-height: 190px;
  margin-top: 14px;
  opacity: 1;
}

.quality-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 28px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.quality-strip .strip-label {
  color: #8a93a3;
}

.quality-strip div {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.quality-strip span {
  padding: 9px 16px;
  border-radius: 999px;
  color: var(--blue-deep);
  font-size: 13px;
  font-weight: 900;
  background: var(--mist);
}

.talent-grid,
.kobe-grid,
.quality-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.kobe-grid {
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.info-card,
.mini-card,
.quality-card,
.road-flow article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 1px 0 rgba(17, 24, 39, 0.04);
}

.info-card,
.quality-card {
  padding: 30px;
}

.mini-card {
  padding: 24px;
}

.info-card > span,
.quality-card > span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  color: #fff;
  font-family: Inter, "Noto Sans JP", sans-serif;
  font-weight: 900;
  background: var(--navy-gradient);
}

.info-card h3,
.mini-card h3,
.quality-card h3,
.road-flow h3 {
  margin: 18px 0 10px;
  color: var(--blue-deep);
  font-size: 20px;
}

.info-card ul {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.info-card li,
.mini-card p,
.quality-card p,
.road-flow p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}

.info-card li::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 10px;
  border-radius: 50%;
  background: var(--blue-deep);
  vertical-align: 0.12em;
}

.mini-card {
  padding: 28px 24px;
  border-color: transparent;
  border-radius: 0;
  background: #fff;
}

.mini-card + .mini-card {
  border-left: 1px solid var(--line);
}

.mini-card h3 {
  margin-top: 0;
  min-height: calc(1.55em * 2 + 18px);
  font-size: 18px;
  line-height: 1.55;
}

.mini-card h3::before {
  content: "";
  display: block;
  width: 30px;
  height: 2px;
  margin-bottom: 16px;
  background: var(--blue-deep);
}

.quality-card {
  position: relative;
  border-color: transparent;
  background: #fff;
  box-shadow: none;
  border-top: 1px solid var(--line);
}

.quality-card > span {
  width: auto;
  height: auto;
  color: #9aa3b2;
  font-size: 13px;
  letter-spacing: 0.12em;
  background: none;
}

.quality-card h3 {
  margin-top: 14px;
  font-size: 22px;
}

.road-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}

.road-flow article {
  position: relative;
  padding: 34px 26px 12px;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.road-flow span {
  color: #b8552f;
  font-family: Inter, "Noto Sans JP", sans-serif;
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.road-flow h3 {
  margin: 26px 0 18px;
  color: #18181b;
  font-family: Inter, "Noto Sans JP", sans-serif;
  font-size: clamp(24px, 2.8vw, 36px);
  line-height: 1.2;
}

.road-flow p {
  min-height: 72px;
  font-size: 16px;
  font-weight: 600;
}

.road-flow strong {
  display: block;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--blue-deep);
  font-size: 14px;
}

.road-message {
  max-width: 820px;
  margin: 28px auto 0;
  color: var(--blue-deep);
  font-size: 18px;
  font-weight: 900;
  line-height: 1.9;
  text-align: center;
}

.site-footer {
  color: #d8eaff;
  background: #0c254a;
}

.footer-skyline {
  height: 340px;
  background:
    radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.08), transparent 24%),
    linear-gradient(135deg, #071f49 0%, #0c2344 58%, #111827 100%);
}

.footer-content {
  width: min(1000px, calc(100% - 40px));
  margin: 0 auto;
  padding: 36px 0 42px;
  text-align: center;
}

.footer-title {
  margin: 0 0 12px;
  color: #fff;
  font-size: 22px;
  font-weight: 900;
}

.footer-content p {
  margin: 6px 0;
  color: #9ebde0;
  font-size: 12px;
  line-height: 1.8;
}

.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .talent-grid,
  .kobe-grid,
  .quality-grid,
  .road-flow {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .site-header {
    min-height: 66px;
    padding: 11px 16px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .brand-sub,
  .nav-actions a:not(.nav-button) {
    display: none;
  }

  .brand-name {
    font-size: 17px;
  }

  .talent-grid,
  .kobe-grid,
  .quality-grid,
  .road-flow {
    grid-template-columns: 1fr;
  }
}