/* Vanho official homepage — StyleDNA tokens (grayscale + #ba1f25) */
html.is-official {
  --color-neutral-900: #343535;
  --color-neutral-800: #666666;
  --color-neutral-700: #737373;
  --color-neutral-600: #8d8d8d;
  --color-neutral-500: #999999;
  --color-neutral-300: #aba7a2;
  --color-surface: #ffffff;
  --color-accent: #ba1f25;
  --font-family-base: "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-weight-regular: 400;
  --font-weight-semibold: 600;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-md: 15px;
  --font-size-lg: 16px;
  --font-size-xl: 17px;
  --font-size-xxl: 18px;
  --font-size-display: 20px;
  --font-size-hero: 22px;
  --space-sm: 9.5px;
  --space-md: 16px;
  --space-lg: 18px;
  --space-xl: 22px;
  --radius-default: 0px;
  font-size: 16px !important;
}

html.is-official,
html.is-official body {
  width: 100%;
  max-width: 100%;
  margin: 0;
  overflow-x: clip;
  overflow-y: auto;
  background: var(--color-surface);
  font-family: var(--font-family-base);
  color: var(--color-neutral-900);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

html.is-official #app.official-app,
html.is-official #app.official-app.red-theme,
html.is-official #app.official-app.black-theme {
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  padding-top: 0;
  overflow: visible;
  background: var(--color-surface);
  font-family: var(--font-family-base);
  color: var(--color-neutral-900);
}

html.is-official #app.official-app .body-box,
html.is-official #app.official-app .body-box > * {
  width: 100%;
  max-width: 100%;
  min-height: 0;
  padding-bottom: 0;
  overflow: visible;
}

.official-site {
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--color-surface);
  font-family: var(--font-family-base);
  font-weight: var(--font-weight-regular);
  font-size: var(--font-size-md);
  line-height: 1.7;
  color: var(--color-neutral-900);
  overflow-x: clip;
  padding-bottom: calc(64px + env(safe-area-inset-bottom, 0px));
  -webkit-tap-highlight-color: transparent;
}

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

.official-site a {
  color: inherit;
  text-decoration: none;
}

.official-site img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 0;
}

.official-site button {
  font-family: inherit;
  font-size: inherit;
  font-weight: var(--font-weight-regular);
  border-radius: var(--radius-default);
  box-shadow: none;
  appearance: none;
  -webkit-appearance: none;
}

.official-wrap {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

.official-kicker {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin: 0 0 var(--space-md);
  font-size: var(--font-size-xs);
  letter-spacing: 0.18em;
  color: var(--color-neutral-700);
}

.official-kicker::before {
  content: "";
  width: 16px;
  height: 2px;
  background: var(--color-accent);
}

.official-title {
  margin: 0 0 var(--space-sm);
  font-size: var(--font-size-hero);
  font-weight: var(--font-weight-semibold);
  line-height: 1.35;
  color: var(--color-neutral-900);
}

.official-lead {
  margin: 0;
  max-width: 36em;
  font-size: var(--font-size-md);
  color: var(--color-neutral-700);
}

/* Buttons — StyleDNA: square, flat, 15/400 */
.official-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border: 1px solid var(--color-neutral-600);
  background: transparent;
  color: var(--color-neutral-700);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-regular);
  line-height: 1;
  cursor: pointer;
}

.official-btn--accent {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.official-btn--solid {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-surface);
}

.official-btn--ghost {
  border-color: rgba(255, 255, 255, 0.55);
  color: var(--color-surface);
}

.official-btn--block {
  width: 100%;
}

/* Header */
.official-topbar {
  display: none;
  background: var(--color-neutral-900);
  color: #d8d8d8;
  font-size: var(--font-size-xs);
  line-height: 36px;
}

.official-topbar .official-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.official-topbar span {
  color: var(--color-neutral-300);
}

.official-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--color-surface);
  border-bottom: 1px solid #e6e6e6;
  padding-top: env(safe-area-inset-top, 0px);
}

.official-header-row {
  display: flex;
  align-items: center;
  min-height: 58px;
  gap: var(--space-sm);
}

.official-logo {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  height: 32px;
}

.official-logo img {
  height: 32px;
  width: auto;
  max-width: 168px;
  object-fit: contain;
}

.official-nav {
  display: none;
  flex: 1;
  justify-content: center;
  gap: 4px;
}

.official-nav a {
  padding: 10px 12px;
  font-size: var(--font-size-md);
  color: var(--color-neutral-700);
}

.official-nav a.is-on,
.official-nav a:active {
  color: var(--color-accent);
  font-weight: var(--font-weight-semibold);
}

.official-header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-left: auto;
}

.official-header-actions .official-btn {
  min-height: 36px;
  padding: 0 12px;
}

.official-header-actions .official-btn--desk {
  display: none;
}

.official-menu-btn {
  width: 44px;
  height: 44px;
  margin-right: -8px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--color-neutral-900);
}

.official-menu-btn i,
.official-menu-btn i::before,
.official-menu-btn i::after {
  display: block;
  width: 18px;
  height: 1px;
  margin: 5px auto;
  background: currentColor;
}

.official-menu-btn i {
  position: relative;
  margin: 0 auto;
}

.official-menu-btn i::before,
.official-menu-btn i::after {
  content: "";
  position: absolute;
  left: 0;
  margin: 0;
}

.official-menu-btn i::before {
  top: -6px;
}

.official-menu-btn i::after {
  top: 6px;
}

.official-drawer {
  display: none;
  border-top: 1px solid #e6e6e6;
  background: var(--color-surface);
}

.official-drawer.is-open {
  display: block;
}

.official-drawer a,
.official-drawer button {
  display: block;
  width: 100%;
  min-height: 48px;
  padding: 12px 0;
  border: 0;
  border-bottom: 1px solid #eee;
  background: transparent;
  text-align: left;
  color: var(--color-neutral-900);
  font-size: var(--font-size-md);
}

.official-drawer .official-btn {
  margin-top: var(--space-md);
  margin-bottom: var(--space-md);
  text-align: center;
}

/* Hero */
.official-hero {
  display: flex;
  flex-direction: column;
  background: var(--color-neutral-900);
  color: var(--color-surface);
}

.official-hero-visual {
  width: 100%;
  background: var(--color-neutral-900);
}

.official-hero-visual img {
  width: 100%;
  height: 42vh;
  min-height: 220px;
  object-fit: cover;
  object-position: center 82%;
}

.official-hero-panel {
  width: 100%;
  background: var(--color-neutral-900);
}

.official-hero-inner {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 16px 36px;
}

.official-hero .official-kicker {
  color: rgba(255, 255, 255, 0.72);
}

.official-hero h1 {
  margin: 0 0 var(--space-md);
  font-size: 28px;
  font-weight: var(--font-weight-semibold);
  line-height: 1.3;
  letter-spacing: 0.06em;
}

.official-hero p {
  margin: 0 0 24px;
  max-width: 22em;
  font-size: var(--font-size-md);
  color: rgba(255, 255, 255, 0.86);
}

.official-hero-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 360px;
}

/* Figures */
.official-figures {
  border-bottom: 1px solid #e6e6e6;
  background: var(--color-surface);
}

.official-figures-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.official-figure {
  padding: 22px 16px;
  border-right: 1px solid #e6e6e6;
  border-bottom: 1px solid #e6e6e6;
}

.official-figure:nth-child(2n) {
  border-right: 0;
}

.official-figure b {
  display: block;
  margin-bottom: 4px;
  font-size: var(--font-size-display);
  font-weight: var(--font-weight-semibold);
  line-height: 1.2;
  color: var(--color-accent);
}

.official-figure span {
  font-size: var(--font-size-xs);
  color: var(--color-neutral-700);
}

/* Sections */
.official-section {
  padding: 48px 0;
  scroll-margin-top: 88px;
}

.official-section--tone {
  background: #f7f7f7;
}

.official-section-head {
  margin-bottom: 28px;
}

/* Business */
.official-cards {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--color-neutral-600);
  border-left: 1px solid var(--color-neutral-600);
}

.official-card {
  padding: 22px 16px;
  border-right: 1px solid var(--color-neutral-600);
  border-bottom: 1px solid var(--color-neutral-600);
  background: var(--color-surface);
  text-align: left;
  cursor: pointer;
}

.official-card em {
  display: block;
  margin-bottom: 10px;
  font-style: normal;
  font-size: var(--font-size-xs);
  letter-spacing: 0.12em;
  color: var(--color-accent);
}

.official-card h3 {
  margin: 0 0 8px;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
}

.official-card p {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-neutral-700);
}

.official-card:active h3 {
  color: var(--color-accent);
}

.official-pro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-top: 22px;
}

.official-pro li {
  list-style: none;
  padding: 16px 0;
  border-bottom: 1px solid #e6e6e6;
}

.official-pro strong {
  display: block;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
}

.official-pro span {
  display: block;
  margin-top: 4px;
  font-size: var(--font-size-xs);
  color: var(--color-neutral-700);
}

/* About */
.official-about-grid {
  display: grid;
  gap: 28px;
}

.official-about-copy p {
  margin: 0 0 var(--space-md);
  font-size: var(--font-size-md);
  color: var(--color-neutral-700);
  text-align: justify;
}

.official-share {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid #e6e6e6;
}

.official-share b {
  display: block;
  font-size: var(--font-size-xxl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent);
}

.official-share span {
  font-size: var(--font-size-sm);
  color: var(--color-neutral-700);
}

.official-photo {
  width: 100%;
  overflow: hidden;
  background: #ececec;
}

.official-photo img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.official-photo figcaption {
  padding: 10px 0 0;
  font-size: var(--font-size-xs);
  color: var(--color-neutral-700);
}

/* Enter project */
.official-enter {
  position: relative;
  padding: 56px 0;
  color: var(--color-surface);
  background: var(--color-neutral-900) url("/static/img/official/build.jpg") center / cover no-repeat;
}

.official-enter::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(52, 53, 53, 0.72);
}

.official-enter .official-wrap {
  position: relative;
  z-index: 1;
}

.official-enter .official-kicker {
  color: rgba(255, 255, 255, 0.72);
}

.official-enter h2 {
  margin: 0 0 var(--space-md);
  font-size: 26px;
  font-weight: var(--font-weight-semibold);
}

.official-enter p {
  margin: 0 0 28px;
  max-width: 28em;
  color: rgba(255, 255, 255, 0.84);
}

.official-enter-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 360px;
}

/* News */
.official-news-grid {
  display: grid;
  gap: 32px;
}

.official-news-col h3 {
  margin: 0 0 var(--space-md);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-neutral-600);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

.official-news-col ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.official-news-col li {
  display: flex;
  gap: var(--space-md);
  padding: 14px 0;
  border-bottom: 1px solid #eee;
}

.official-news-col time {
  flex: 0 0 72px;
  font-size: var(--font-size-xs);
  color: var(--color-neutral-500);
}

.official-news-col span {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--color-neutral-900);
  line-height: 1.55;
}

/* Contact */
.official-contact-grid {
  display: grid;
  gap: 28px;
}

.official-contact-item {
  padding-bottom: 18px;
  border-bottom: 1px solid #eee;
}

.official-contact-item h3 {
  margin: 0 0 8px;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
}

.official-contact-item p,
.official-contact-item a {
  margin: 0 0 6px;
  font-size: var(--font-size-sm);
  color: var(--color-neutral-700);
}

.official-contact-item a {
  color: var(--color-accent);
}

.official-wechat {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.official-wechat img {
  width: 96px;
  height: 96px;
  object-fit: cover;
  border: 1px solid var(--color-neutral-600);
}

.official-wechat p {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-neutral-700);
}

/* Footer */
.official-footer {
  padding: 28px 0 calc(28px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid #e6e6e6;
  background: var(--color-surface);
  color: var(--color-neutral-700);
  font-size: var(--font-size-xs);
}

.official-footer p {
  margin: 0 0 8px;
  line-height: 1.7;
}

.official-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-bottom: 12px;
}

.official-footer-links a {
  color: var(--color-neutral-700);
}

/* Mobile enter bar */
.official-mbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  display: flex;
  padding: 8px 16px calc(8px + env(safe-area-inset-bottom, 0px));
  background: var(--color-surface);
  border-top: 1px solid #e6e6e6;
}

.official-mbar .official-btn {
  flex: 1;
}

@media (max-width: 719px) {
  .official-hero,
  .official-hero-actions,
  .official-enter-actions {
    flex-direction: column;
  }

  .official-hero-visual,
  .official-hero-panel {
    flex: none;
    width: 100%;
  }

  .official-hero-visual img {
    width: 100%;
    height: 42vh;
    min-height: 220px;
  }

  .official-hero-inner {
    padding: 32px 16px 36px;
  }

  .official-nav,
  .official-header-actions .official-btn--desk {
    display: none;
  }

  .official-menu-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}

@media (min-width: 720px) {
  .official-site {
    padding-bottom: 0;
  }

  .official-wrap {
    padding-left: 24px;
    padding-right: 24px;
  }

  .official-topbar {
    display: block;
  }

  .official-header-row {
    min-height: 72px;
  }

  .official-logo,
  .official-logo img {
    height: 36px;
    max-width: 200px;
  }

  .official-nav {
    display: flex;
  }

  .official-menu-btn,
  .official-drawer,
  .official-mbar {
    display: none !important;
  }

  .official-header-actions .official-btn--desk {
    display: inline-flex;
  }

  .official-hero {
    flex-direction: row;
    min-height: 72vh;
    align-items: stretch;
  }

  .official-hero-visual {
    flex: 1.15;
    min-width: 0;
  }

  .official-hero-visual img {
    height: 100%;
    min-height: 72vh;
  }

  .official-hero-panel {
    flex: 0.85;
    display: flex;
    align-items: center;
  }

  .official-hero-inner {
    padding: 48px 40px;
  }

  .official-hero h1 {
    font-size: 40px;
  }

  .official-hero-actions,
  .official-enter-actions {
    flex-direction: row;
    max-width: none;
  }

  .official-figures-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .official-figure {
    border-bottom: 0;
  }

  .official-figure:nth-child(2n) {
    border-right: 1px solid #e6e6e6;
  }

  .official-figure:last-child {
    border-right: 0;
  }

  .official-section {
    padding: 72px 0;
  }

  .official-cards {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .official-pro {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0 32px;
  }

  .official-about-grid,
  .official-news-grid,
  .official-contact-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 48px;
    align-items: start;
  }

  .official-photo img {
    height: 320px;
  }

  .official-share {
    grid-template-columns: 1fr 1fr;
  }

  .official-enter h2 {
    font-size: 32px;
  }
}

@media (min-width: 1080px) {
  .official-hero h1 {
    font-size: 46px;
  }

  .official-card {
    padding: 28px 22px;
  }
}