/* ==========================================================================
   浙江山高新能源有限公司 — Design System
   Premium industrial B2B — inspired by Tianneng/enterprise design language
   ========================================================================== */

/* --- Tokens --- */
:root {
  --brand: #1a56db;
  --brand-dark: #1344b0;
  --brand-light: #e8effc;
  --brand-rgb: 26, 86, 219;

  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  --white: #ffffff;
  --black: #000000;

  --success: #16a34a;
  --warning: #d97706;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-cn: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

  --leading-tight: 1.2;
  --leading-snug: 1.35;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);

  --container: 1200px;
  --container-narrow: 960px;
  --container-wide: 1400px;

  --header-h: 72px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-cn);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--gray-800);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--brand-dark); }
ul, ol { list-style: none; }
table { border-collapse: collapse; width: 100%; }
button { cursor: pointer; font: inherit; }
h1, h2, h3, h4, h5, h6 { line-height: var(--leading-tight); color: var(--gray-900); }

/* --- Layout --- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: var(--container-narrow); }
.container--wide { max-width: var(--container-wide); }

.section { padding: 80px 0; }
.section--sm { padding: 48px 0; }
.section--lg { padding: 100px 0; }
.section--gray { background: var(--gray-50); }
.section--dark { background: var(--gray-900); color: var(--white); }
.section--brand { background: var(--brand); color: var(--white); }

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  height: var(--header-h);
  transition: box-shadow 0.3s;
}
.header.scrolled { box-shadow: var(--shadow-md); }
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px;
}
.header__logo {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--gray-900);
  white-space: nowrap;
  letter-spacing: 0.01em;
}
.header__logo:hover { color: var(--gray-900); text-decoration: none; }

/* Nav */
.nav { display: flex; align-items: center; gap: 4px; }
.nav__item { position: relative; }
.nav__link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 16px;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--gray-600);
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}
.nav__link:hover, .nav__link--active {
  color: var(--brand);
  background: var(--brand-light);
  text-decoration: none;
}
.nav__link--active { font-weight: 600; }
.nav__arrow {
  width: 12px;
  height: 12px;
  transition: transform 0.2s;
}
.nav__item:hover .nav__arrow { transform: rotate(180deg); }

/* Dropdown */
.nav__dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 8px 0;
  z-index: 100;
}
.nav__item:hover .nav__dropdown { display: block; }
.nav__dropdown a {
  display: block;
  padding: 10px 20px;
  font-size: var(--text-sm);
  color: var(--gray-700);
  transition: background 0.15s, color 0.15s;
}
.nav__dropdown a:hover {
  background: var(--brand-light);
  color: var(--brand);
  text-decoration: none;
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  color: var(--gray-700);
}
.nav-toggle svg { width: 24px; height: 24px; }

@media (max-width: 1024px) {
  .nav-toggle { display: block; }
  .nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    flex-direction: column;
    padding: 16px 24px;
    gap: 0;
    box-shadow: var(--shadow-lg);
  }
  .nav.open { display: flex; }
  .nav__link { padding: 12px 16px; width: 100%; }
  .nav__dropdown {
    position: static;
    box-shadow: none;
    border: none;
    padding-left: 16px;
    display: none;
  }
  .nav__item:hover .nav__dropdown,
  .nav__item.open .nav__dropdown { display: block; }
}

/* --- Page banner --- */
.page-banner {
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
  color: var(--white);
  padding: 60px 0 48px;
  margin-top: var(--header-h);
}
.page-banner__title {
  font-size: var(--text-4xl);
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--white);
}
.page-banner__desc {
  font-size: var(--text-lg);
  color: var(--gray-300);
  max-width: 640px;
  line-height: var(--leading-relaxed);
}
.breadcrumb {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: var(--text-sm);
  color: var(--gray-400);
  margin-top: 16px;
}
.breadcrumb a { color: var(--gray-300); }
.breadcrumb a:hover { color: var(--white); text-decoration: underline; }
.breadcrumb__sep { color: var(--gray-500); }
.breadcrumb + .page-banner__title { margin-top: 16px; }

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 540px;
  display: flex;
  align-items: center;
  margin-top: var(--header-h);
  background: linear-gradient(135deg, var(--gray-900) 0%, #1a2744 50%, var(--brand-dark) 100%);
  color: var(--white);
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
}
.hero__content {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin-left: 10%;
}
.hero__title {
  font-size: clamp(var(--text-3xl), 4.5vw, var(--text-6xl));
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  color: var(--white);
}
.hero__subtitle {
  font-size: var(--text-xl);
  color: rgba(255,255,255,0.8);
  line-height: var(--leading-relaxed);
  margin-bottom: 32px;
}
.hero__actions { display: flex; gap: 12px; flex-wrap: wrap; }

@media (max-width: 768px) {
  .hero { min-height: 420px; padding: 40px 0; }
  .hero__subtitle { font-size: var(--text-lg); }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  transition: all 0.2s;
  white-space: nowrap;
}
.btn--primary {
  background: var(--brand);
  color: var(--white);
  border-color: var(--brand);
}
.btn--primary:hover {
  background: var(--brand-dark);
  border-color: var(--brand-dark);
  color: var(--white);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn--outline {
  background: transparent;
  color: var(--brand);
  border-color: var(--brand);
}
.btn--outline:hover {
  background: var(--brand);
  color: var(--white);
  text-decoration: none;
  transform: translateY(-1px);
}
.btn--white {
  background: var(--white);
  color: var(--brand);
  border-color: var(--white);
}
.btn--white:hover {
  background: var(--gray-100);
  color: var(--brand-dark);
  text-decoration: none;
  transform: translateY(-1px);
}
.btn--ghost {
  background: transparent;
  color: rgba(255,255,255,0.9);
  border-color: rgba(255,255,255,0.4);
}
.btn--ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
  color: var(--white);
  text-decoration: none;
}
.btn--sm { padding: 8px 20px; font-size: var(--text-xs); }
.btn--lg { padding: 16px 36px; font-size: var(--text-base); }

/* --- Section typography --- */
.section__label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--brand);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.section__title {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--gray-900);
}
.section--dark .section__title,
.section--brand .section__title { color: var(--white); }
.section__desc {
  font-size: var(--text-lg);
  color: var(--gray-500);
  max-width: 640px;
  line-height: var(--leading-relaxed);
}
.section--dark .section__desc { color: var(--gray-400); }

.section__header { margin-bottom: 48px; }
.section__header--center { text-align: center; }
.section__header--center .section__desc { margin-left: auto; margin-right: auto; }

/* --- Stats bar --- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.stats--overlay {
  position: relative;
  z-index: 2;
  margin-top: -48px;
}
.stat {
  padding: 32px 24px;
  text-align: center;
  border-right: 1px solid var(--gray-200);
}
.stat:last-child { border-right: none; }
.stat__value {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 800;
  color: var(--brand);
  line-height: 1;
  margin-bottom: 8px;
}
.stat__label {
  font-size: var(--text-sm);
  color: var(--gray-500);
  font-weight: 500;
}

@media (max-width: 768px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat { border-bottom: 1px solid var(--gray-200); }
  .stat:nth-child(even) { border-right: none; }
  .stat:nth-last-child(-n+2) { border-bottom: none; }
}

/* --- Cards --- */
.card-grid {
  display: grid;
  gap: 24px;
}
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }
.card-grid--3 { grid-template-columns: repeat(3, 1fr); }
.card-grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .card-grid--3, .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .card-grid--2, .card-grid--3, .card-grid--4 { grid-template-columns: 1fr; }
}

.card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.card:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card__icon {
  width: 48px;
  height: 48px;
  background: var(--brand-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--brand);
  font-size: var(--text-xl);
  font-weight: 700;
}
.card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--gray-900);
}
.card__text {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: var(--leading-relaxed);
}
.card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--brand);
}
.card__link:hover { color: var(--brand-dark); text-decoration: none; gap: 10px; }

/* Product card */
.product-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.product-card:hover {
  border-color: var(--brand);
  box-shadow: 0 12px 32px rgba(var(--brand-rgb), 0.15);
  transform: translateY(-6px);
}
.product-card:hover .product-card__img img {
  transform: scale(1.03);
}
.product-card__img {
  overflow: hidden;
  background: var(--gray-50);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.product-card__img img {
  max-width: 100%;
  height: auto;
  object-fit: contain;
  transition: transform 0.4s;
}
.product-card__img--sm img {
  max-width: 75%;
  margin: 0 auto;
}
.product-card__img--quarter {
  background: transparent;
  padding: 24px 24px 0;
  justify-content: flex-start;
}
.product-card__img--quarter img {
  max-width: 100%;
  height: auto;
  display: block;
}
.product-card__img--cover {
  aspect-ratio: 16 / 10;
  padding: 0;
}
.product-card__img--cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: none;
}
.product-card:hover .product-card__img img { transform: scale(1.03); }
.product-card__body { padding: 24px; }
.product-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: 8px;
}
.product-card__title a { color: var(--gray-900); }
.product-card__title a:hover { color: var(--brand); text-decoration: none; }
.product-card__desc {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: var(--leading-relaxed);
  margin-bottom: 16px;
}
.product-card__link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--brand);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.product-card__link:hover { gap: 10px; text-decoration: none; }

/* --- Product detail --- */
.product-hero {
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  padding: 40px 0;
}
.product-hero__img {
  max-width: 800px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.product-hero__img img { width: 100%; }

.product-intro {
  font-size: var(--text-lg);
  color: var(--gray-600);
  line-height: var(--leading-relaxed);
  max-width: 800px;
}
.section--intro { padding-top: 0; }
.product-intro strong { color: var(--gray-900); }

/* Tech cards */
.tech-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.tech-card:hover { border-color: var(--brand); box-shadow: var(--shadow-md); }
.tech-card__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--brand);
  color: var(--white);
  border-radius: 50%;
  font-size: var(--text-sm);
  font-weight: 700;
  margin-bottom: 16px;
}
.tech-card__title {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--gray-900);
}
.tech-card__text {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: var(--leading-relaxed);
}

/* Advantages list */
.advantages {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.advantage {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: var(--gray-50);
  border-radius: var(--radius);
  font-size: var(--text-sm);
  color: var(--gray-700);
  line-height: var(--leading-relaxed);
}
.advantage::before {
  content: "";
  flex: 0 0 8px;
  width: 8px;
  height: 8px;
  background: var(--brand);
  border-radius: 50%;
  margin-top: 6px;
}
@media (max-width: 640px) {
  .advantages { grid-template-columns: 1fr; }
}

/* --- Tables --- */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
}
.data-table {
  width: 100%;
  font-size: var(--text-sm);
  border-collapse: collapse;
}
.data-table th, .data-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
  border-right: 1px solid var(--gray-100);
}
.data-table th:last-child, .data-table td:last-child { border-right: none; }
.data-table thead th {
  background: var(--gray-900);
  color: var(--white);
  font-weight: 600;
  font-size: var(--text-xs);
  letter-spacing: 0.03em;
  text-transform: none;
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr { background: var(--white); }
.data-table tbody tr:nth-child(even) { background: var(--white); }
.data-table tbody tr:hover { background: var(--brand-light); }
.data-table td:first-child { font-weight: 600; color: var(--gray-800); background: var(--white); }
.data-table tbody tr:hover td:first-child { background: var(--brand-light); }
.data-table strong { color: var(--brand); }

/* --- Product image viewer --- */
.pv {
  max-width: 560px;
  margin: 0 auto 32px;
}
.pv-main {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  margin-bottom: 8px;
  cursor: zoom-in;
}
.pv-main img { max-width: 100%; max-height: 100%; object-fit: contain; transition: opacity 0.25s; }
.pv-subtitle {
  text-align: center;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 12px;
}
.pv-label {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--gray-500);
  margin-bottom: 12px;
  font-weight: 500;
}
.pv-thumbs {
  display: flex;
  gap: 8px;
  justify-content: center;
  overflow-x: auto;
  padding-bottom: 4px;
}
.pv-thumb {
  flex: 0 0 64px;
  width: 64px;
  height: 64px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
  transition: border-color 0.2s;
}
.pv-thumb:hover { border-color: var(--brand); }
.pv-thumb.active { border-color: var(--brand); box-shadow: 0 0 0 2px var(--brand-light); }
.pv-thumb img { max-width: 100%; max-height: 100%; object-fit: contain; }

/* --- Lightbox --- */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.9);
  align-items: center;
  justify-content: center;
  padding: 40px;
  cursor: pointer;
}
.lightbox.active { display: flex; }
.lightbox__close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: none;
  border: none;
  color: var(--white);
  font-size: var(--text-3xl);
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s;
}
.lightbox__close:hover { opacity: 1; }
.lightbox img { max-width: 90vw; max-height: 85vh; object-fit: contain; border-radius: var(--radius); }

/* --- Tabs --- */
.tabs__nav {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--gray-200);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 32px;
}
.tabs__btn {
  padding: 14px 24px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--gray-500);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.2s, border-color 0.2s;
}
.tabs__btn:hover { color: var(--brand); }
.tabs__btn.active {
  color: var(--brand);
  border-bottom-color: var(--brand);
}
.tabs__panel { display: none; }
.tabs__panel.active { display: block; }

/* --- CTA section --- */
.cta-section {
  background: linear-gradient(135deg, var(--gray-900) 0%, #1a2744 100%);
  color: var(--white);
  text-align: center;
  padding: 80px 0;
}
.cta-section__title {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--white);
}
.cta-section__text {
  font-size: var(--text-lg);
  color: var(--gray-300);
  margin-bottom: 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Footer --- */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 64px 0 0;
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--gray-700);
}
.footer__brand {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}
.footer__desc {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--gray-400);
  margin-bottom: 16px;
}
.footer__heading {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__links a { font-size: var(--text-sm); color: var(--gray-400); transition: color 0.2s; }
.footer__links a:hover { color: var(--white); text-decoration: none; }
.footer__bottom {
  padding: 24px 0;
  text-align: center;
  font-size: var(--text-xs);
  color: var(--gray-500);
}

@media (max-width: 768px) {
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 480px) {
  .footer__grid { grid-template-columns: 1fr; }
}

/* --- Investor highlights --- */
.highlight-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.highlight {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.highlight:hover { border-color: var(--brand); box-shadow: var(--shadow-md); }
.highlight__title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
}
.highlight__text {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: var(--leading-relaxed);
}
.highlight strong { color: var(--brand); }

@media (max-width: 768px) {
  .highlight-grid { grid-template-columns: 1fr; }
}

/* --- IP/Patent boxes --- */
.ip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.ip-box {
  background: var(--brand-light);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--brand-dark);
}
@media (max-width: 768px) {
  .ip-grid { grid-template-columns: repeat(2, 1fr); }
}

/* --- Team stats --- */
.team-stats {
  display: flex;
  gap: 48px;
  margin-top: 32px;
}
.team-stat__value {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--brand);
  line-height: 1;
}
.team-stat__label {
  font-size: var(--text-sm);
  color: var(--gray-500);
  margin-top: 4px;
}
@media (max-width: 640px) {
  .team-stats { flex-direction: column; gap: 24px; }
}

/* --- Services --- */
.service-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.service-block__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.service-block__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  background: var(--gray-50);
  border-radius: var(--radius);
  border-left: 3px solid var(--brand);
  font-size: var(--text-sm);
  color: var(--gray-700);
  line-height: var(--leading-relaxed);
}
.section--gray .service-block__item { background: var(--white); }
.service-block__list + .btn { margin-top: 24px; }
@media (max-width: 768px) {
  .service-block { grid-template-columns: 1fr; gap: 24px; }
}

/* --- Contact form --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  align-items: start;
}
.contact-info {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.contact-info__title {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: 16px;
}
.contact-info__item {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  font-size: var(--text-sm);
  color: var(--gray-600);
}
.contact-info__item strong { color: var(--gray-800); }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}
.form-group input, .form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font: inherit;
  font-size: var(--text-sm);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--gray-800);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(var(--brand-rgb), 0.15);
}
.form-group textarea { min-height: 140px; resize: vertical; }
@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* --- Recycling outputs --- */
.output-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.output-col__header {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--gray-900);
  padding-bottom: 12px;
  border-bottom: 2px solid var(--brand);
  margin-bottom: 12px;
}
.output-col__item {
  padding: 10px 0;
  font-size: var(--text-sm);
  color: var(--gray-600);
  border-bottom: 1px solid var(--gray-100);
}
@media (max-width: 640px) {
  .output-grid { grid-template-columns: 1fr; }
}

/* --- Performance metrics --- */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.metric {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: var(--white);
  border-radius: var(--radius);
  border-left: 3px solid var(--brand);
}
.metric__label {
  font-size: var(--text-sm);
  color: var(--gray-600);
  font-weight: 500;
}
.metric__value {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--brand);
}
@media (max-width: 640px) {
  .metrics-grid { grid-template-columns: 1fr; }
}

/* --- Factory gallery --- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 32px;
}
.gallery-grid img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
}
@media (max-width: 768px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}

/* --- Growth strategy --- */
.strategy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.strategy-col {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.strategy-col__title {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--gray-900);
}
.strategy-col__text {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: var(--leading-relaxed);
}
.strategy-col__text + .strategy-col__text { margin-top: 12px; }
@media (max-width: 768px) {
  .strategy-grid { grid-template-columns: 1fr; }
}

/* --- Disclaimer --- */
.disclaimer {
  background: var(--gray-50);
  border-left: 3px solid var(--gray-300);
  padding: 16px 20px;
  font-size: var(--text-xs);
  color: var(--gray-500);
  line-height: var(--leading-relaxed);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 32px;
}

/* --- Misc --- */
.text-muted { color: var(--gray-500); font-size: var(--text-sm); margin-top: 8px; }
.divider { border: none; border-top: 1px solid var(--gray-200); margin: 0; }
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--brand);
}
.back-link:hover { color: var(--brand-dark); gap: 10px; text-decoration: none; }

.page-content { margin-top: var(--header-h); }
.page-content > .section:first-child { padding-top: 48px; }

/* Scroll padding for header */
html { scroll-padding-top: calc(var(--header-h) + 24px); }