:root {
  --ink: #111411;
  --ink-soft: #343b35;
  --paper: #f2f1eb;
  --paper-deep: #e5e3da;
  --line: #cbc9bf;
  --signal: #d7ef8a;
  --signal-dark: #7d9d24;
  --white: #ffffff;
  --display: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  background: var(--signal);
  color: var(--ink);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  display: flex;
  width: min(1440px, 100%);
  min-height: 92px;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  margin: 0 auto;
  padding: 20px clamp(22px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
}

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

.brand img {
  flex: 0 0 auto;
}

.brand span {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand strong {
  font-family: var(--display);
  font-size: 18px;
  letter-spacing: 0.06em;
}

.brand small {
  margin-top: 4px;
  color: #6a716b;
  font-size: 9px;
  letter-spacing: 0.18em;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 12px 28px;
}

.site-nav a {
  position: relative;
  color: #4d544e;
  font-size: 14px;
  text-decoration: none;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -5px;
  left: 0;
  height: 1px;
  background: var(--ink);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 220ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.hero {
  position: relative;
  display: grid;
  min-height: min(760px, calc(100vh - 92px));
  overflow: hidden;
  grid-template-columns: minmax(0, 1fr) minmax(250px, 0.34fr);
  grid-template-rows: 1fr auto;
  gap: 0 56px;
  padding: clamp(64px, 9vw, 132px) clamp(22px, 7vw, 108px) 0;
  background: var(--ink);
  color: var(--white);
}

.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.19;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.12) 1px, transparent 1px);
  background-position: center;
  background-size: 88px 88px;
  mask-image: linear-gradient(90deg, transparent 0%, #000 38%, #000 100%);
}

.hero-index {
  position: absolute;
  top: 5%;
  right: 3%;
  color: transparent;
  font-family: var(--display);
  font-size: clamp(150px, 30vw, 460px);
  font-weight: 700;
  line-height: 1;
  opacity: 0.22;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.4);
  user-select: none;
}

.hero-content,
.hero-meta {
  position: relative;
  z-index: 1;
}

.eyebrow,
.section-label,
.contact-kicker {
  margin: 0 0 20px;
  color: var(--signal-dark);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: var(--signal);
}

.hero h1 {
  max-width: 880px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(54px, 7.2vw, 112px);
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.08;
}

.hero h1 span {
  display: block;
  color: #aeb5ae;
}

.hero-copy {
  max-width: 680px;
  margin: 38px 0 0;
  color: #c5cac5;
  font-size: clamp(16px, 1.5vw, 20px);
  line-height: 1.9;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 40px;
  color: var(--signal);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.text-link span {
  transition: transform 180ms ease;
}

.text-link:hover span {
  transform: translateY(4px);
}

.hero-meta {
  display: flex;
  flex-direction: column;
  align-self: end;
  gap: 24px;
  padding-bottom: 74px;
}

.hero-meta div {
  display: grid;
  gap: 4px;
  border-top: 1px solid #3b423b;
  padding-top: 16px;
}

.hero-meta span {
  color: #8e978f;
  font-size: 11px;
  letter-spacing: 0.1em;
}

.hero-meta strong {
  color: #e8ebe8;
  font-family: var(--display);
  font-size: 18px;
  font-weight: 500;
}

.section {
  display: grid;
  width: min(1440px, 100%);
  grid-template-columns: minmax(150px, 0.25fr) minmax(0, 1fr);
  gap: clamp(28px, 7vw, 100px);
  margin: 0 auto;
  padding: clamp(76px, 10vw, 150px) clamp(22px, 7vw, 108px);
  border-bottom: 1px solid var(--line);
}

.section-label {
  margin: 8px 0 0;
  color: #747b74;
}

.section-content h2 {
  max-width: 900px;
  margin: 0 0 42px;
  font-family: var(--display);
  font-size: clamp(36px, 4.4vw, 68px);
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.24;
}

.profile-copy {
  display: grid;
  max-width: 940px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px 52px;
  color: #505851;
  font-size: 17px;
}

.profile-copy p {
  margin: 0;
}

.direction {
  background: var(--paper-deep);
}

.direction-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.direction-list li {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 24px;
  padding: 32px 0;
  border-top: 1px solid #bdbcb2;
}

.direction-list li:last-child {
  border-bottom: 1px solid #bdbcb2;
}

.item-number {
  color: var(--signal-dark);
  font-family: var(--display);
  font-size: 30px;
  line-height: 1;
}

.direction-list h3,
.principle-grid h3 {
  margin: 0;
  font-family: var(--display);
  font-size: 28px;
  font-weight: 600;
}

.direction-list p {
  max-width: 780px;
  margin: 12px 0 0;
  color: #565e57;
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.principle-grid article {
  min-height: 260px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 28px;
}

.principle-grid article > span {
  color: var(--signal-dark);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.principle-grid h3 {
  margin-top: 46px;
  font-size: 26px;
}

.principle-grid p {
  margin: 14px 0 0;
  color: #565e57;
  font-size: 15px;
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(240px, 0.75fr);
  gap: 48px;
  border-top: 1px solid var(--ink);
  padding-top: 34px;
}

.contact-panel h2 {
  margin-bottom: 12px;
  font-size: clamp(30px, 3.2vw, 48px);
}

.contact-panel p {
  margin: 0;
  color: #626a63;
}

.contact-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  gap: 8px;
}

.contact-links span {
  color: #737a73;
  font-size: 12px;
  letter-spacing: 0.12em;
}

.contact-links a {
  border-bottom: 1px solid var(--ink);
  font-family: var(--display);
  font-size: 22px;
  text-decoration: none;
}

.site-footer {
  display: flex;
  width: min(1440px, 100%);
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 0 auto;
  padding: 28px clamp(22px, 7vw, 108px);
  background: var(--ink);
  color: #b4bbb4;
  font-size: 12px;
}

.site-footer > div {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.site-footer strong {
  color: #eef1ee;
  font-weight: 500;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.site-footer a {
  color: #b4bbb4;
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--signal);
}

.section.is-pending {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 520ms ease,
    transform 520ms ease;
}

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

.legal-page {
  min-height: 100vh;
}

.legal-main {
  width: min(900px, calc(100% - 44px));
  margin: 0 auto;
  padding: clamp(70px, 9vw, 126px) 0;
}

.legal-main > h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(48px, 7vw, 82px);
  font-weight: 500;
  line-height: 1.12;
}

.legal-date {
  margin: 18px 0 56px;
  color: #6e756f;
  font-size: 13px;
}

.legal-main section {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.legal-main h2 {
  margin: 0 0 14px;
  font-family: var(--display);
  font-size: 26px;
  font-weight: 600;
}

.legal-main p {
  margin: 0;
  color: #4f5750;
}

.legal-main a {
  color: var(--signal-dark);
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-bottom: 0;
  }

  .hero-index {
    top: 2%;
    right: -4%;
    font-size: 210px;
  }

  .hero h1 {
    font-size: clamp(46px, 13vw, 74px);
  }

  .hero-meta {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding-bottom: 42px;
  }

  .section {
    grid-template-columns: 1fr;
  }

  .section-label {
    margin-bottom: 8px;
  }

  .profile-copy,
  .principle-grid,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .principle-grid article {
    min-height: auto;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .site-nav {
    gap: 10px 18px;
  }

  .hero {
    padding-top: 58px;
  }

  .hero h1 {
    font-size: 44px;
  }

  .hero-copy {
    margin-top: 28px;
    font-size: 16px;
  }

  .hero-meta {
    grid-template-columns: 1fr;
  }

  .section {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .direction-list li {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 16px;
  }

  .direction-list h3,
  .principle-grid h3 {
    font-size: 23px;
  }

  .contact-links a {
    font-size: 18px;
    overflow-wrap: anywhere;
  }

  .site-footer {
    padding-top: 24px;
    padding-bottom: 30px;
  }

  .legal-main {
    width: min(100% - 36px, 900px);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .section.is-pending {
    opacity: 1;
    transform: none;
  }
}