/* GBMI Green Building � Phase 1 Design System (BRAND.md) */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&family=Noto+Sans+TC:wght@400;500;700&display=swap');

:root {
  --color-primary-green: #2e7d32;
  --color-primary-green-light: #43a047;
  --color-primary-green-dark: #1b5e20;
  --color-primary-blue: #1565c0;
  --color-primary-blue-light: #1976d2;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f9f6;
  --color-accent-green: #e8f5e9;
  --color-accent-blue: #e3f2fd;
  --color-text-primary: #212121;
  --color-text-secondary: #616161;
  --color-border: #e0e0e0;
  --color-gray-100: #f5f5f5;
  --gradient-hero: linear-gradient(135deg, rgba(46, 125, 50, 0.78) 0%, rgba(21, 101, 192, 0.78) 100%);
  --gradient-cta: linear-gradient(135deg, #2e7d32 0%, #1565c0 100%);
  --font-sans-zh: 'Noto Sans TC', 'Microsoft JhengHei', sans-serif;
  --font-sans-en: 'Inter', sans-serif;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-header: 0 1px 0 rgba(0, 0, 0, 0.06);
  --container-max: 1200px;
  --header-height: 72px;
  --section-y: 5.5rem;
}

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

html {
  scroll-behavior: smooth;
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans-zh);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-primary);
  background: var(--color-bg);
}

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

a {
  color: var(--color-primary-blue);
  text-decoration: none;
  transition: color 200ms ease;
}

a:hover {
  color: var(--color-primary-blue-light);
}

h1, h2, h3, h4 {
  line-height: 1.35;
  margin: 0 0 0.75rem;
  color: var(--color-text-primary);
}

h1 { font-size: clamp(1.75rem, 4vw, 2.25rem); font-weight: 700; }
h2 { font-size: clamp(1.375rem, 3vw, 1.5rem); font-weight: 600; }
h3 { font-size: 1.125rem; font-weight: 600; }

p {
  margin: 0 0 1rem;
  color: var(--color-text-secondary);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: var(--section-y) 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 2.5rem;
}

.section-header p {
  margin-bottom: 0;
}

.text-en {
  font-family: var(--font-sans-en);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-sans-zh);
  border: none;
  cursor: pointer;
  transition: background-color 200ms ease, color 200ms ease, border-color 200ms ease;
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary-blue);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--color-primary-green);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-green-dark);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-green);
  border: 1.5px solid var(--color-primary-green);
}

.btn-outline:hover {
  background: var(--color-accent-green);
  color: var(--color-primary-green);
}

.btn-outline-white {
  background: transparent;
  color: #fff;
  border: 1.5px solid #fff;
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Tags */
.tag {
  display: inline-block;
  background: var(--color-accent-green);
  color: var(--color-primary-green);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
}

/* Cards */
.card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: box-shadow 200ms ease, transform 200ms ease;
}

.card--link {
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.card--link:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.card__image {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  width: 100%;
}

.card__body {
  padding: 1.25rem 1.5rem 1.5rem;
}

.card__body h3 {
  color: var(--color-primary-green);
  margin-bottom: 0.5rem;
}

.card__body p {
  font-size: 14px;
  margin-bottom: 0.75rem;
}

.card__link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary-blue);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: box-shadow 200ms ease, border-color 200ms ease;
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-header);
  border-bottom-color: var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
}

.logo img {
  height: 44px;
  width: auto;
}

.logo__text {
  display: none;
  flex-direction: column;
  line-height: 1.2;
}

.logo__text strong {
  font-size: 14px;
  color: var(--color-primary-green);
}

.logo__text span {
  font-size: 10px;
  font-family: var(--font-sans-en);
  color: var(--color-primary-blue);
}

@media (min-width: 640px) {
  .logo__text {
    display: flex;
  }
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 0.25rem;
}

@media (min-width: 1024px) {
  .nav-desktop {
    display: flex;
  }
}

.nav-desktop a {
  color: var(--color-text-primary);
  font-size: 15px;
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-sm);
  transition: color 200ms ease, background 200ms ease;
}

.nav-desktop a:hover,
.nav-desktop a.is-active {
  color: var(--color-primary-green);
  background: var(--color-accent-green);
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown__toggle {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 15px;
  color: var(--color-text-primary);
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color 200ms ease, background 200ms ease;
}

.nav-dropdown__toggle:hover,
.nav-dropdown.is-open .nav-dropdown__toggle {
  color: var(--color-primary-green);
  background: var(--color-accent-green);
}

.nav-dropdown__menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  min-width: 200px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card-hover);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 200ms ease, transform 200ms ease, visibility 200ms ease;
}

.nav-dropdown.is-open .nav-dropdown__menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown__menu a {
  display: block;
  padding: 0.625rem 0.875rem;
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
}

.nav-dropdown__menu a:hover {
  background: var(--color-accent-green);
  color: var(--color-primary-green);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-actions .btn-primary {
  display: none;
}

@media (min-width: 768px) {
  .header-actions .btn-primary {
    display: inline-flex;
  }
}

.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--color-text-primary);
}

@media (min-width: 1024px) {
  .menu-toggle {
    display: none;
  }
}

.menu-toggle svg {
  width: 24px;
  height: 24px;
}

/* Mobile nav */
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  height: calc(100dvh - var(--header-height));
  max-height: calc(100dvh - var(--header-height));
  background: var(--color-bg);
  z-index: 60;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  padding: 1.5rem;
  padding-bottom: calc(1.5rem + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--color-border);
}

.nav-mobile.is-open {
  display: block;
}

.nav-mobile a,
.nav-mobile summary {
  display: block;
  padding: 0.875rem 0;
  color: var(--color-text-primary);
  font-size: 16px;
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
}

.nav-mobile details summary {
  list-style: none;
  font-weight: 500;
}

.nav-mobile details summary::-webkit-details-marker {
  display: none;
}

.nav-mobile details a {
  padding-left: 1rem;
  font-size: 15px;
  border-bottom: none;
}

.nav-mobile .btn-primary {
  width: 100%;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

body.nav-open {
  overflow: hidden;
}

body.nav-open .line-float {
  display: none;
}

/* Hero */
.hero {
  position: relative;
  min-height: min(70vh, 640px);
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  padding-block: 4rem;
  max-width: 760px;
}

.hero__content h1 {
  color: #fff;
  font-size: clamp(1.75rem, 5vw, 2.25rem);
  margin-bottom: 1rem;
  line-height: 1.35;
}

.hero__title-line {
  display: block;
}

.hero__title-line + .hero__title-line {
  margin-top: 0.25rem;
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 1.75rem;
  line-height: 1.6;
}

.hero-trust {
  margin-top: 2.25rem;
}

.hero-trust__lead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.625rem;
  padding: 0 0.25rem;
}

.hero-trust__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.92);
}

.hero-trust__eyebrow::before {
  content: '';
  width: 1.5rem;
  height: 2px;
  border-radius: 1px;
  background: linear-gradient(90deg, #66bb6a 0%, #1976d2 100%);
}

.hero-trust__note {
  font-size: 0.75rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.78);
  white-space: nowrap;
}

.hero-trust__strip {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  background: rgba(255, 255, 255, 0.97);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.14);
  overflow: hidden;
}

.hero-trust__strip::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #43a047 0%, #1976d2 100%);
  z-index: 1;
}

.hero-trust__item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.625rem;
  min-width: 0;
  padding: 1rem 0.75rem 0.9375rem;
  transition: background-color 0.2s ease;
}

.hero-trust__item:not(:first-child)::after {
  content: '';
  position: absolute;
  left: 0;
  top: 18%;
  bottom: 18%;
  width: 1px;
  background: var(--color-border);
}

.hero-trust__item:hover {
  background: var(--color-accent-green);
}

.hero-trust__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  color: var(--color-primary-green);
}

.hero-trust__icon svg {
  width: 1.375rem;
  height: 1.375rem;
}

.hero-trust__copy {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  min-width: 0;
  text-align: left;
}

.hero-trust__title {
  color: var(--color-text-primary);
  font-size: clamp(0.6875rem, 2vw, 0.8125rem);
  font-weight: 700;
  line-height: 1.25;
}

.hero-trust__caption {
  color: var(--color-text-secondary);
  font-size: clamp(0.625rem, 1.7vw, 0.6875rem);
  font-weight: 500;
  line-height: 1.2;
}

@media (max-width: 479px) {
  .hero-trust__note {
    display: none;
  }

  .hero-trust__item {
    padding: 0.875rem 0.375rem 0.8125rem;
    gap: 0.375rem;
  }

  .hero-trust__icon {
    width: 1.625rem;
    height: 1.625rem;
  }

  .hero-trust__icon svg {
    width: 1.125rem;
    height: 1.125rem;
  }
}

/* Page hero (inner pages) */
.page-hero {
  background: var(--color-bg-alt);
  padding: 3rem 0;
  border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
  color: var(--color-primary-green);
  margin-bottom: 0.5rem;
}

.page-hero p {
  font-size: 1.125rem;
  max-width: 640px;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  text-align: center;
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat__value {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary-green);
  line-height: 1.2;
}

.stat__label {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: 0.25rem;
}

/* Features grid */
.features-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-item {
  text-align: center;
  padding: 1.5rem 1rem;
}

.feature-item__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-green);
  border-radius: var(--radius-lg);
  color: var(--color-primary-green);
}

.feature-item h3 {
  margin-bottom: 0.5rem;
}

.feature-item p {
  font-size: 14px;
  margin: 0;
}

/* Product grid */
.product-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* CTA band */
.cta-band {
  background: var(--gradient-cta);
  color: #fff;
  text-align: center;
}

.cta-band h2 {
  color: #fff;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 520px;
  margin: 0 auto 1.5rem;
}

.cta-band .btn-group {
  justify-content: center;
}

.cta-band__phone {
  margin-top: 1.25rem;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
}

.cta-band__phone a {
  color: #fff;
  font-weight: 600;
}

/* Footer */
.site-footer {
  padding: 2.5rem 0 0;
  background: var(--color-bg);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding-bottom: 2rem;
}

@media (min-width: 768px) {
  .site-footer__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

.site-footer__brand p {
  font-size: 14px;
  margin: 0.5rem 0 0;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  font-size: 14px;
}

.site-footer__links a {
  color: var(--color-text-secondary);
}

.site-footer__links a:hover {
  color: var(--color-primary-green);
}

.site-footer__copy {
  font-size: 12px;
  color: var(--color-text-secondary);
  padding-bottom: 0;
}

.footer-stripe {
  height: 4px;
  background: var(--color-primary-green-light);
}

/* LINE float */
.line-float {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 45;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #06c755;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-card-hover);
  cursor: pointer;
  transition: transform 200ms ease;
  text-decoration: none;
}

.line-float:hover {
  transform: scale(1.05);
  color: #fff;
}

.line-float svg {
  width: 28px;
  height: 28px;
}

/* Product page */
.spec-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.spec-table--comparison {
  min-width: 36rem;
}

.spec-table th,
.spec-table td {
  padding: 0.875rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.spec-table tr:last-child th,
.spec-table tr:last-child td {
  border-bottom: none;
}

.spec-table th {
  color: var(--color-text-primary);
  font-weight: 600;
  background: var(--color-bg-alt);
}

.spec-table:not(.spec-table--comparison) th {
  width: 35%;
}

.color-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (min-width: 640px) {
  .color-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.color-swatch {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.color-swatch img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  width: 100%;
}

.color-swatch__info {
  padding: 0.75rem;
  font-size: 13px;
}

.color-swatch__info strong {
  display: block;
  color: var(--color-text-primary);
}

/* Filter tabs */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.filter-tab {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-bg);
  font-family: inherit;
  font-size: 14px;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: border-color 200ms ease, color 200ms ease, background 200ms ease;
}

.filter-tab:hover {
  border-color: var(--color-primary-green);
  color: var(--color-primary-green);
}

.filter-tab--active {
  background: var(--color-primary-green);
  border-color: var(--color-primary-green);
  color: #fff;
}

.filter-tab--active:hover {
  color: #fff;
}

.cases-empty,
.faq-empty {
  text-align: center;
  color: var(--color-text-secondary);
  padding: 2rem 0;
}

.detail-list {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--color-text-secondary);
}

.detail-list li + li {
  margin-top: 0.5rem;
}

/* Case detail */
.case-detail-grid {
  display: grid;
  gap: 2rem;
  align-items: start;
}

@media (min-width: 992px) {
  .case-detail-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* FAQ accordion */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-accordion {
  border-bottom: 1px solid var(--color-border);
}

.faq-accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1.25rem 0;
  border: none;
  background: none;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-primary);
  text-align: left;
  cursor: pointer;
}

.faq-accordion__trigger:hover {
  color: var(--color-primary-green);
}

.faq-accordion__icon {
  flex-shrink: 0;
  transition: transform 200ms ease;
}

.faq-accordion__trigger[aria-expanded="true"] .faq-accordion__icon {
  transform: rotate(180deg);
}

.faq-accordion__panel {
  padding-bottom: 1.25rem;
}

.faq-accordion__panel p {
  margin: 0;
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 1.25rem 0;
}

.faq-item h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--color-text-primary);
}

.faq-item p {
  margin: 0;
  font-size: 15px;
}

/* Contact */
.contact-grid {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 992px) {
  .contact-grid {
    grid-template-columns: 1fr 1.1fr;
  }
}

.contact-info__item {
  margin-bottom: 1.25rem;
}

.contact-info__item strong {
  display: block;
  color: var(--color-text-primary);
  margin-bottom: 0.25rem;
}

.contact-form {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

@media (min-width: 640px) {
  .contact-form {
    padding: 2rem;
  }
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: 0.375rem;
}

.form-group input:not([type="checkbox"]):not([type="radio"]),
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 16px;
  transition: border-color 200ms ease, box-shadow 200ms ease;
}

.form-group input:not([type="checkbox"]):not([type="radio"]):focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary-green);
  box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.15);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.checkbox-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

@media (min-width: 520px) {
  .checkbox-group {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.25;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.checkbox-group label:has(input:checked) {
  border-color: var(--color-primary-green);
  background: var(--color-accent-green);
}

.checkbox-group label:hover {
  border-color: var(--color-primary-green-light);
}

.checkbox-group input[type="checkbox"] {
  flex-shrink: 0;
  width: 1rem;
  height: 1rem;
  margin: 0;
  padding: 0;
  border: none;
  accent-color: var(--color-primary-green);
  cursor: pointer;
}

@media (max-width: 519px) {
  .checkbox-group label:last-child:nth-child(odd) {
    grid-column: span 2;
    max-width: calc(50% - 0.25rem);
  }
}

.form-success {
  display: none;
  padding: 1rem;
  background: var(--color-accent-green);
  color: var(--color-primary-green);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  font-size: 14px;
}

.form-success.is-visible {
  display: block;
}

.form-error {
  display: none;
  padding: 1rem;
  background: #fdecea;
  color: #b71c1c;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  font-size: 14px;
}

.form-error.is-visible {
  display: block;
}

#form-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* About */
.values-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.value-card {
  padding: 1.5rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.value-card h3 {
  color: var(--color-primary-green);
}

.cert-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.cert-grid img {
  height: 48px;
  width: auto;
}

.cert-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
  width: 100%;
  height: 100%;
  padding: 1rem 1.25rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.cert-card__label {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.cert-card__label strong {
  color: var(--color-text-primary);
  font-size: 15px;
}

.cert-card img {
  flex-shrink: 0;
  height: 40px;
  width: auto;
}

.cert-card p {
  margin: 0;
  width: 100%;
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.45;
}

@media (max-width: 479px) {
  .cert-card {
    padding: 0.875rem 0.75rem;
    gap: 0.5rem;
  }

  .cert-card img {
    height: 32px;
  }

  .cert-card__label strong {
    font-size: 14px;
  }

  .cert-card p {
    font-size: 12px;
  }
}

.process-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .process-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.process-step {
  padding: 1.25rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.process-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin-bottom: 0.75rem;
  border-radius: 999px;
  background: var(--color-accent-green);
  color: var(--color-primary-green);
  font-weight: 700;
  font-size: 14px;
}

.process-step h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.process-step p {
  margin: 0;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.pricing-panel {
  max-width: 560px;
  padding: 1.5rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.prose {
  max-width: 680px;
}

.prose p:last-child {
  margin-bottom: 0;
}

.breadcrumb {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}

.breadcrumb a {
  color: var(--color-text-secondary);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}