:root {
  color-scheme: light;
  --page: #f7f8fa;
  --paper: #ffffff;
  --ink: #1b1f24;
  --muted: #525b66;
  --quiet: #78828e;
  --line: #dde2e8;
  --line-strong: #c8d0da;
  --accent: #1267b3;
  --accent-soft: #eaf3ff;
  --shadow: 0 18px 42px rgba(22, 34, 51, 0.08);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--page);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

p,
h1,
h2,
h3,
li,
dd {
  overflow-wrap: anywhere;
}

.site-header,
.hero,
.project-stack,
.principle-band,
.contact-strip,
.case-hero,
.case-grid,
.case-detail,
.legal-main,
.site-footer {
  width: min(1120px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 248, 250, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.brand {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 720;
}

.brand-mark {
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  color: var(--accent);
  background: var(--paper);
  font-size: 15px;
  font-weight: 760;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
}

.site-nav a {
  color: var(--muted);
  font-size: 14px;
  line-height: 1;
  font-weight: 620;
}

.site-nav a:hover {
  color: var(--accent);
}

.hero {
  padding: 88px 0 72px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.72fr);
  gap: 56px;
  align-items: end;
}

.hero-text h1,
.case-hero h1 {
  margin: 0;
  max-width: 820px;
  color: var(--ink);
  font-size: 54px;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-text p,
.case-hero p,
.section-heading p,
.contact-strip p,
.legal-document p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.78;
}

.hero-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.hero-panel dl {
  margin: 0;
}

.hero-panel div {
  padding: 20px;
  border-bottom: 1px solid var(--line);
}

.hero-panel div:last-child {
  border-bottom: 0;
}

.hero-panel dt {
  color: var(--quiet);
  font-size: 13px;
  font-weight: 700;
}

.hero-panel dd {
  margin: 8px 0 0;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.55;
  font-weight: 650;
}

.project-stack {
  padding: 48px 0 88px;
}

.section-heading {
  max-width: 680px;
  margin-bottom: 32px;
}

.section-heading h2,
.contact-strip h2,
.legal-document h1 {
  margin: 0;
  color: var(--ink);
  font-size: 34px;
  line-height: 1.2;
}

.project-card {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(460px, 1.08fr);
  gap: 34px;
  align-items: center;
  padding: 32px 0;
  border-top: 1px solid var(--line);
}

.project-card.reverse {
  grid-template-columns: minmax(460px, 1.08fr) minmax(0, 0.92fr);
}

.project-card.reverse .project-copy {
  order: 2;
}

.project-card.reverse .project-image {
  order: 1;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 13px;
  line-height: 1.3;
  font-weight: 740;
}

.project-copy h3 {
  margin: 0;
  color: var(--ink);
  font-size: 31px;
  line-height: 1.2;
}

.project-copy p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.72;
}

.project-copy ul,
.detail-copy ul {
  margin: 18px 0 0;
  padding-left: 20px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
}

.project-copy li + li,
.detail-copy li + li {
  margin-top: 6px;
}

.text-link {
  margin-top: 20px;
  display: inline-flex;
  color: var(--accent);
  font-size: 15px;
  font-weight: 720;
}

.text-link::after {
  content: "→";
  margin-left: 8px;
}

.project-image,
.case-shot,
.shot-grid img {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.project-image img,
.case-shot img,
.shot-grid img {
  width: 100%;
  height: auto;
}

.principle-band {
  width: 100%;
  padding: 72px max(24px, calc((100% - 1120px) / 2));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.principle-grid,
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.principle-grid article,
.case-grid article,
.legal-document {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.principle-grid article,
.case-grid article {
  padding: 22px;
}

.principle-grid h3,
.case-grid h2,
.detail-copy h2,
.legal-document h2 {
  margin: 0;
  color: var(--ink);
  font-size: 20px;
  line-height: 1.35;
}

.principle-grid p,
.case-grid p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.68;
}

.contact-strip {
  padding: 54px 0;
}

.contact-strip a,
.legal-document a {
  color: var(--accent);
  font-weight: 700;
}

.site-footer {
  padding: 36px 0 44px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: start;
  gap: 28px 32px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.footer-brand,
.site-footer a {
  color: var(--ink);
  font-weight: 700;
}

.site-footer p {
  margin: 8px 0 0;
  line-height: 1.55;
}

.site-footer nav {
  min-width: 128px;
  display: grid;
  gap: 9px;
}

.footer-record {
  grid-column: 1 / -1;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  text-align: center;
}

.footer-record a {
  color: var(--quiet);
  font-size: 12px;
  line-height: 1.5;
  font-weight: 520;
}

.footer-record a:hover {
  color: var(--accent);
}

.case-hero {
  padding: 72px 0 42px;
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(520px, 1.18fr);
  gap: 42px;
  align-items: center;
}

.case-grid {
  padding: 0 0 42px;
}

.case-detail {
  padding: 0 0 80px;
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(520px, 1.25fr);
  gap: 30px;
  align-items: start;
}

.detail-copy {
  position: sticky;
  top: 90px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.shot-grid {
  display: grid;
  gap: 18px;
}

.legal-main {
  padding: 72px 0;
}

.legal-document {
  max-width: 820px;
  padding: 34px;
}

.legal-document h2 {
  margin-top: 28px;
}

.section-label,
.updated {
  color: var(--quiet);
  font-size: 14px;
}

@media (max-width: 980px) {
  .hero,
  .project-card,
  .project-card.reverse,
  .case-hero,
  .case-detail {
    grid-template-columns: 1fr;
  }

  .project-card.reverse .project-copy,
  .project-card.reverse .project-image {
    order: initial;
  }

  .principle-grid,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .detail-copy {
    position: static;
  }
}

@media (max-width: 720px) {
  .site-header,
  .hero,
  .project-stack,
  .case-hero,
  .case-grid,
  .case-detail,
  .legal-main,
  .site-footer {
    width: calc(100% - 28px);
  }

  .site-header {
    min-height: 58px;
    padding: 10px 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .site-nav {
    width: 100%;
    justify-content: flex-start;
    gap: 14px;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .site-nav a {
    flex: 0 0 auto;
  }

  .hero {
    padding-top: 48px;
    gap: 28px;
  }

  .hero-text h1,
  .case-hero h1 {
    font-size: 38px;
  }

  .section-heading h2,
  .contact-strip h2,
  .legal-document h1 {
    font-size: 28px;
  }

  .project-copy h3 {
    font-size: 26px;
  }

  .principle-band {
    padding-block: 52px;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }

  .legal-document {
    padding: 24px;
  }
}