:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --bg-elevated: #fffdf8;
  --text: #12324f;
  --muted: #3d5870;
  --panel: #1a73c7;
  --panel-text: #f7fbff;
  --panel-muted: #e7f2fc;
  --line: rgba(18, 50, 79, 0.14);
  --line-strong: rgba(18, 50, 79, 0.32);
  --seal: #0d5eae;
  --yellow: #f2c14b;
  --focus: #1a73c7;
  --header: rgba(244, 247, 251, 0.92);
  --shadow: 0 18px 40px rgba(26, 115, 199, 0.12);
  --serif: "Noto Serif SC", "Songti SC", "Source Han Serif SC", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --latin: "Cormorant Garamond", "Iowan Old Style", "Palatino Linotype", serif;
  --space: 8px;
  --header-h: 72px;
  --measure: 68ch;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  margin: 0;
  background:
    radial-gradient(ellipse at 0% 0%, rgba(26, 115, 199, 0.12), transparent 42%),
    radial-gradient(ellipse at 100% 8%, rgba(242, 193, 75, 0.28), transparent 36%),
    var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 40;
  opacity: 0.12;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.35'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

a:hover {
  color: var(--seal);
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 16px;
  top: 8px;
  z-index: 60;
  transform: translateY(-140%);
  background: var(--text);
  color: var(--bg);
  padding: 10px 14px;
  text-decoration: none;
}

.skip:focus {
  transform: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  height: var(--header-h);
  background: var(--header);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(14px);
}

.site-header.is-stuck {
  border-bottom-color: var(--line);
}

.header-inner {
  max-width: 1180px;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  min-height: 44px;
}

.brand:hover {
  color: inherit;
}

.mark {
  width: 28px;
  height: 28px;
  color: var(--panel);
}

.mark rect,
.mark path {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.4;
}

.brand-name {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.12em;
}

.brand-en {
  font-family: var(--latin);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--muted);
}

.nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.nav a {
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  font-size: 0.95rem;
  color: var(--muted);
}

.nav a[aria-current="true"] {
  color: var(--text);
  box-shadow: inset 0 -2px 0 var(--yellow);
}

.header-cta {
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  border: 1px solid var(--line-strong);
  font-size: 0.95rem;
}

.header-cta:hover {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.menu-lines,
.menu-lines::before,
.menu-lines::after {
  display: block;
  width: 16px;
  height: 1.5px;
  background: currentColor;
  position: relative;
}

.menu-lines::before,
.menu-lines::after {
  content: "";
  position: absolute;
  left: 0;
}

.menu-lines::before {
  top: -5px;
}

.menu-lines::after {
  top: 5px;
}

.menu-btn[aria-expanded="true"] .menu-lines {
  background: transparent;
}

.menu-btn[aria-expanded="true"] .menu-lines::before {
  top: 0;
  transform: rotate(40deg);
}

.menu-btn[aria-expanded="true"] .menu-lines::after {
  top: 0;
  transform: rotate(-40deg);
}

.hero {
  max-width: 1180px;
  margin: 0 auto;
  padding: 12px 24px 72px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 28px;
  align-items: stretch;
}

.hero-photo {
  grid-column: 1 / -1;
  margin: 0;
}

.hero-photo img {
  width: 100%;
  height: min(46vh, 460px);
  object-fit: cover;
  object-position: center 42%;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px 8px 12px 0;
}

.eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 28px;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.eyebrow-dot {
  width: 18px;
  height: 1px;
  background: var(--yellow);
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h1 {
  margin: 0;
  font-size: clamp(2.6rem, 5.4vw, 4.6rem);
  font-weight: 700;
  max-width: 11em;
}

.lede {
  max-width: var(--measure);
  margin: 24px 0 0;
  font-size: 1.125rem;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.btn {
  appearance: none;
  border: 1px solid transparent;
  cursor: pointer;
  font: inherit;
  min-height: 48px;
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}

.btn:hover {
  color: inherit;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--yellow);
  color: #12324f;
  font-weight: 500;
}

.btn-primary:hover {
  background: #e0aa2a;
  color: #12324f;
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}

.btn-ghost:hover {
  border-color: var(--text);
  color: var(--text);
}

.hero-panel {
  background: var(--panel);
  color: var(--panel-text);
  padding: 32px 28px 24px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.hero-panel::after {
  content: "泽";
  position: absolute;
  right: -12px;
  bottom: -28px;
  font-family: var(--serif);
  font-size: 11rem;
  line-height: 1;
  opacity: 0.08;
  pointer-events: none;
}

.panel-kicker {
  margin: 0 0 18px;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  text-transform: uppercase;
  color: var(--panel-muted);
}

.toc {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  z-index: 1;
}

.toc li {
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 13px 0;
  border-top: 1px solid color-mix(in srgb, var(--panel-text) 22%, transparent);
  font-family: var(--serif);
  font-size: 1.25rem;
}

.toc li span {
  font-family: var(--latin);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--panel-muted);
  min-width: 1.6em;
}

.panel-note {
  margin: auto 0 0;
  padding-top: 22px;
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--panel-muted);
  position: relative;
  z-index: 1;
}

.about,
.scope,
.services,
.contact {
  max-width: 1180px;
  margin: 0 auto;
  padding: 88px 24px;
}

.section-label {
  display: flex;
  gap: 12px;
  align-items: baseline;
  color: var(--seal);
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.section-label span:first-child {
  font-family: var(--latin);
  font-style: italic;
  font-size: 1.15rem;
  letter-spacing: 0;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(240px, 0.7fr);
  gap: 48px;
  align-items: end;
}

.about h2,
.scope h2,
.services h2,
.contact h2 {
  margin: 0 0 18px;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  max-width: 16em;
}

.about p,
.scope-intro p,
.contact-lead {
  margin: 0 0 14px;
  max-width: 62ch;
  color: var(--muted);
}

blockquote {
  margin: 0;
  padding: 8px 0 8px 22px;
  border-left: 3px solid var(--yellow);
}

blockquote p {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.45rem;
  line-height: 1.45;
  color: var(--text);
}

.facts {
  margin: 48px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.facts dt,
.contact-meta dt {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--seal);
}

.facts dd,
.contact-meta dd {
  margin: 6px 0 0;
}

.mail-link {
  font-family: var(--latin);
  font-size: 1.45rem;
  font-style: italic;
  color: var(--seal);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.mail-link:hover {
  color: var(--text);
}

.scope {
  border-top: 1px solid var(--line);
}

.scope-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.scope-intro {
  position: sticky;
  top: calc(var(--header-h) + 24px);
}

.scope-cols {
  display: grid;
  gap: 16px;
}

.scope-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.scope-pair .scope-block li {
  grid-template-columns: 1fr;
  gap: 4px;
}

.credential {
  display: grid;
  grid-template-columns: 8.5em minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  padding: 18px 22px;
  box-shadow: inset 3px 0 0 var(--panel);
}

.credential strong {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 600;
}

.credential p {
  margin: 0;
  color: var(--muted);
}

.scope-block {
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  padding: 22px 22px 8px;
}

.scope-primary {
  box-shadow: inset 3px 0 0 var(--yellow);
}

.scope-block header h3 {
  margin: 0;
  font-size: 1.45rem;
}

.scope-block header p {
  margin: 4px 0 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

.scope-block ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.scope-block li {
  display: grid;
  grid-template-columns: 9.5em minmax(0, 1fr);
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.scope-block li span {
  color: var(--muted);
}

.section-head {
  max-width: 40rem;
  margin-bottom: 12px;
}

.service-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.service-list li {
  display: grid;
  grid-template-columns: minmax(180px, 260px) minmax(0, 1fr);
  gap: 28px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  align-items: center;
}

.service-list figure {
  margin: 0;
}

.service-list img {
  width: 100%;
  height: 168px;
  object-fit: cover;
}

.service-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.idx {
  font-family: var(--latin);
  font-style: italic;
  font-size: 1.8rem;
  color: var(--seal);
  line-height: 1.2;
}

.service-list h3 {
  margin: 0 0 8px;
  font-size: 1.6rem;
}

.service-list p {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
}

.maps {
  margin-top: 10px !important;
  font-size: 0.92rem;
  color: var(--text) !important;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 48px;
  align-items: start;
}

.contact-meta {
  margin: 28px 0 0;
  display: grid;
  gap: 16px;
}

.form,
.success {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  padding: 24px;
}

.field {
  margin-bottom: 14px;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.92rem;
  margin-bottom: 6px;
}

.optional {
  color: var(--muted);
  font-size: 0.8rem;
}

input,
select,
textarea {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: 0;
  padding: 12px 12px;
  min-height: 48px;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline-offset: 0;
  border-color: var(--focus);
}

.field.is-invalid input,
.field.is-invalid select,
.field.is-invalid textarea {
  border-color: var(--seal);
}

.error {
  margin: 6px 0 0;
  color: var(--seal);
  font-size: 0.88rem;
}

.btn-submit {
  width: 100%;
  margin-top: 4px;
}

.form-note,
.copy-status {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.success h3 {
  margin: 0 0 8px;
  font-size: 1.6rem;
}

.success > p {
  margin: 0 0 14px;
  color: var(--muted);
}

.success pre {
  margin: 0;
  white-space: pre-wrap;
  font-family: var(--sans);
  font-size: 0.95rem;
  line-height: 1.65;
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 16px;
  max-height: 280px;
  overflow: auto;
}

.success-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.site-footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 24px 48px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1.2fr 1.4fr auto;
  gap: 18px;
  align-items: start;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-name {
  margin: 0 0 4px;
  color: var(--text);
  font-family: var(--serif);
  font-size: 1.05rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 980px) {
  .hero,
  .about-grid,
  .scope-layout,
  .contact-grid,
  .facts,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .scope-intro {
    position: static;
  }

  .hero {
    min-height: 0;
    padding-top: 12px;
  }

  .hero-copy {
    padding-top: 12px;
  }

  .header-cta {
    display: none;
  }
}

@media (max-width: 760px) {
  .menu-btn {
    display: inline-flex;
  }

  .nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    margin: 0;
    padding: 8px 16px 16px;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 0;
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    border-top: 1px solid var(--line);
    padding: 4px 4px;
  }

  .scope-block li,
  .field-row,
  .service-list li {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .service-list img {
    height: 200px;
  }

  .scope-pair,
  .credential {
    grid-template-columns: 1fr;
  }

  .about,
  .scope,
  .services,
  .contact {
    padding: 64px 20px;
  }

  h1 {
    font-size: 2.35rem;
  }
}

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

  .btn {
    transition: none;
  }

  .btn:active {
    transform: none;
  }
}