html {
  overflow-y: scroll;
}

:root {
  --bg: #f4f7fb;
  --surface: rgba(255, 255, 255, 0.84);
  --surface-strong: #ffffff;
  --line: rgba(14, 116, 144, 0.14);
  --text: #0f172a;
  --muted: #475569;
  --brand-900: #0f172a;
  --brand-700: #155e75;
  --brand-600: #0e7490;
  --brand-200: #dff6fb;
  --shadow: 0 22px 60px rgba(15, 23, 42, 0.12);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --content-width: min(1180px, calc(100vw - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(14, 116, 144, 0.18), transparent 34%),
    radial-gradient(circle at right center, rgba(21, 94, 117, 0.12), transparent 30%),
    linear-gradient(180deg, #f8fbfe 0%, var(--bg) 45%, #eef4fa 100%);
}

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

.site-shell {
  min-height: 100vh;
}

.hero,
.subhero,
.section,
.footer {
  width: var(--content-width);
  margin: 0 auto;
}

.hero,
.subhero {
  padding: 24px 0 30px;
}

.section {
  padding: 28px 0;
}

.section-stack {
  padding-bottom: 8px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 12px 18px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  backdrop-filter: blur(16px);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.04));
  overflow: hidden;
}

.brand-mark-image {
  background:
    url("../01-home/01-home-logo.png") center/cover no-repeat,
    linear-gradient(160deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.04));
}

.brand-mark-image .brand-cut {
  display: none;
}

.brand-cut {
  position: absolute;
  background: linear-gradient(135deg, #6fd1ff 0%, #0e7490 75%);
  transform: skew(-24deg);
  border-radius: 6px;
}

.brand-cut-a {
  inset: 7px 14px 23px 2px;
}

.brand-cut-b {
  inset: 23px 6px 5px 18px;
  background: linear-gradient(135deg, #3ab1e0 0%, #1b5ea7 100%);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-copy strong {
  font-size: 0.98rem;
  line-height: 1.2;
}

.brand-copy small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.72rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: 999px;
  transition: color 180ms ease, background-color 180ms ease;
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--brand-600);
  background: rgba(14, 116, 144, 0.1);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px;
  border: 1px solid rgba(14, 116, 144, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
}

.lang-switch button {
  min-width: 52px;
  padding: 8px 12px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  cursor: pointer;
  transition: background-color 180ms ease, color 180ms ease;
}

.lang-switch button.is-active {
  background: linear-gradient(135deg, var(--brand-900), var(--brand-600));
  color: #fff;
}

.hero-grid,
.intro-grid,
.capability-grid,
.process-grid,
.footer-card,
.placeholder-row,
.contact-single-grid {
  display: grid;
  gap: 18px;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  margin-top: 28px;
  align-items: stretch;
}

.intro-grid {
  grid-template-columns: 1.1fr 0.9fr 0.9fr;
}

.intro-grid-two {
  grid-template-columns: 1.15fr 0.85fr;
}

.capability-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.capability-grid-three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.capability-grid-two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.process-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.process-grid-three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.process-grid-four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.placeholder-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.placeholder-row-three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}


.hero-copy,
.hero-panel,
.panel,
.capability-card,
.process-card,
.footer-card,
.page-hero-card,
.placeholder-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--surface);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
  animation: rise-in 0.8s ease both;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.hero-copy:hover,
.hero-panel:hover,
.panel:hover,
.capability-card:hover,
.process-card:hover,
.footer-card:hover,
.page-hero-card:hover,
.placeholder-card:hover {
  transform: translateY(-4px);
}

.hero-copy {
  padding: 44px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.7)),
    linear-gradient(135deg, rgba(223, 246, 251, 0.6), rgba(255, 255, 255, 0.2));
}

.hero-panel,
.panel-dark,
.page-hero-dark,
.placeholder-card-dark {
  color: #fff;
  background: linear-gradient(145deg, var(--brand-900), var(--brand-700));
}

.hero-panel {
  padding: 24px;
}

.page-hero-card {
  margin-top: 24px;
  padding: 34px;
}

.page-hero-card-compact {
  padding: 20px 30px;
}

.placeholder-card {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 26px;
}

.placeholder-card-tall {
  min-height: 100%;
}

.placeholder-label,
.eyebrow {
  margin: 0;
  color: var(--brand-600);
  letter-spacing: 0.18em;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
}

.placeholder-card-dark .placeholder-label,
.page-hero-dark .eyebrow,
.panel-dark .eyebrow {
  color: #9edff1;
}

.placeholder-file {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.06);
  color: var(--muted);
  font-size: 0.86rem;
  word-break: break-all;
}

.placeholder-card-dark .placeholder-file {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.84);
}

.section-heading {
  margin-bottom: 20px;
}

.hero-copy h1,
.page-title,
.section-heading h2,
.footer-card h2 {
  margin: 0;
  font-family: "Iowan Old Style", "Songti SC", "STSong", serif;
  line-height: 1.04;
}

.hero-copy h1 {
  max-width: 12ch;
  font-size: clamp(2.8rem, 5.2vw, 5.1rem);
}

.page-title,
.section-heading h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.section-heading h2 {
  max-width: 15ch;
}

html[lang="en"] .page-title,
html[lang="en"] .section-heading h2 {
  max-width: none;
  font-size: clamp(1.8rem, 3.2vw, 2.8rem);
  line-height: 1.12;
}

@media (min-width: 761px) {
  html[lang="en"] .page-title,
  html[lang="en"] .section-heading h2 {
    white-space: nowrap;
  }
}

.hero-text,
.page-summary,
.panel p,
.capability-card p,
.process-card p,
.footer-text,
.list,
.placeholder-card span,
.placeholder-card strong,
.contact-list span {
  line-height: 1.8;
}

.hero-text,
.page-summary,
.panel p,
.capability-card p,
.process-card p,
.footer-text,
.list {
  color: var(--muted);
  font-size: 1rem;
}

.panel-dark p,
.page-hero-dark .page-summary {
  color: rgba(255, 255, 255, 0.78);
}

.hero-text {
  max-width: 680px;
  margin: 22px 0 0;
}

.page-summary {
  max-width: 760px;
  margin-top: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 700;
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand-900), var(--brand-600));
}

a.button-primary {
  color: #fff;
}

.button-secondary {
  border: 1px solid rgba(14, 116, 144, 0.22);
  background: rgba(255, 255, 255, 0.72);
}

.button-disabled {
  color: var(--muted);
  cursor: default;
  pointer-events: none;
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.hero-points li {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.95rem;
  line-height: 1.6;
}

.signal-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.panel,
.capability-card,
.process-card {
  padding: 28px;
}

.tile-link {
  display: block;
}

.list {
  margin: 14px 0 0;
  padding-left: 18px;
}

.list-light {
  color: rgba(255, 255, 255, 0.76);
}

.contact-list {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(15, 23, 42, 0.04);
}

.contact-list a {
  color: var(--brand-600);
  font-weight: 700;
}

.footer {
  padding-bottom: 44px;
}

.footer-card {
  grid-template-columns: 1.15fr 0.85fr;
  padding: 30px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(223, 246, 251, 0.62)),
    rgba(255, 255, 255, 0.84);
}

.footer-card-inline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.footer-inline-copy {
  display: flex;
  align-items: center;
}

.contact-list-inline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.contact-list-inline span,
.contact-list-inline a {
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
}

.contact-list-inline span {
  background: rgba(15, 23, 42, 0.05);
  color: var(--muted);
}

.footer-note {
  margin: 16px 2px 0;
  color: var(--muted);
  font-size: 0.9rem;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(28px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1080px) {

  .hero-grid,
  .intro-grid,
  .intro-grid-two,
  .capability-grid,
  .capability-grid-three,
  .process-grid,
  .process-grid-three,
  .process-grid-four,
  .placeholder-row,
  .placeholder-row-three,
  .footer-card {
    grid-template-columns: 1fr;
  }

  .hero-copy h1,
  .section-heading h2,
  .page-title {
    max-width: none;
  }

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

@media (max-width: 760px) {

  .hero,
  .subhero {
    padding-top: 16px;
  }

  .nav {
    flex-direction: column;
    align-items: stretch;
    border-radius: 28px;
  }

  .nav-meta {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-links {
    justify-content: space-between;
    gap: 10px 12px;
    font-size: 0.9rem;
  }

  .lang-switch {
    justify-content: center;
  }

  .hero-copy,
  .hero-panel,
  .panel,
  .capability-card,
  .process-card,
  .footer-card,
  .page-hero-card,
  .placeholder-card {
    border-radius: 26px;
  }

  .hero-copy,
  .hero-panel,
  .page-hero-card,
  .placeholder-card {
    padding: 26px;
  }

  .hero-copy h1 {
    font-size: clamp(2.3rem, 12vw, 3.3rem);
  }

  .page-title,
  .section-heading h2 {
    font-size: clamp(1.8rem, 8vw, 2.6rem);
  }

  .signal-row {
    grid-template-columns: 1fr;
  }

  .footer-card-inline {
    display: grid;
    justify-content: stretch;
  }

  .contact-list-inline {
    justify-content: flex-start;
  }
}