/* ===== Variables ===== */
:root {
  --color-primary: #1a1a1a;
  --color-primary-dark: #000000;
  --color-accent: #e20613;
  --color-text: #1a1a1a;
  --color-text-muted: #6b7280;
  --color-bg: #ffffff;
  --color-bg-gray: #f5f5f5;
  --color-bg-dark: #1a1a1a;
  --color-border: #e2e8f0;
  --color-white: #ffffff;
  --shadow-sm: 0 1px 3px rgba(13, 33, 55, 0.08);
  --shadow-md: 0 8px 24px rgba(13, 33, 55, 0.1);
  --radius: 8px;
  --radius-lg: 12px;
  --container: 1200px;
  --header-h: 72px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
.hidden { display: none !important; }

.container {
  width: min(var(--container), 100% - 2rem);
  margin-inline: auto;
}

/* ===== Topbar ===== */
.topbar {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.8125rem;
  padding: 0.4rem 0;
}
.topbar a { color: var(--color-accent); }
.topbar__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: flex-end;
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.logo__img {
  height: 44px;
  width: auto;
  object-fit: contain;
}
.logo__img--footer {
  height: 40px;
  background: #fff;
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius);
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.nav__link {
  padding: 0.5rem 0.85rem;
  font-size: 0.9375rem;
  color: var(--color-text);
  border-radius: var(--radius);
  transition: background 0.2s, color 0.2s;
}
.nav__link:hover,
.nav__link--active { color: var(--color-accent); background: rgba(226, 6, 19, 0.06); }
.nav__link--cta {
  background: var(--color-primary);
  color: #fff !important;
  margin-left: 0.5rem;
}
.nav__link--cta:hover { background: var(--color-primary-dark); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform 0.2s;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.btn--primary { background: var(--color-accent); color: #fff; }
.btn--primary:hover { background: #c00510; }
.btn--secondary { background: var(--color-primary); color: #fff; }
.btn--secondary:hover { background: var(--color-primary-dark); }
.btn--outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}
.btn--outline:hover { background: rgba(255, 255, 255, 0.1); border-color: #fff; }
.btn--block { width: 100%; }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(0, 0, 0, 0.88) 0%, rgba(26, 26, 26, 0.92) 60%, rgba(226, 6, 19, 0.25) 100%),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 40px,
      rgba(255, 255, 255, 0.02) 40px,
      rgba(255, 255, 255, 0.02) 41px
    );
  background-color: var(--color-bg-dark);
}
.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: center;
  padding-block: 4rem;
}
.hero__tag {
  display: inline-block;
  font-size: 0.8125rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 1rem;
  padding: 0.25rem 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
}
.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  line-height: 1.25;
  font-weight: 700;
  margin-bottom: 1rem;
}
.hero__desc {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
  margin-bottom: 2rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; }

.hero__stats {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  min-width: 160px;
}
.stat {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  backdrop-filter: blur(4px);
}
.stat strong {
  display: block;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-accent);
}
.stat span { font-size: 0.8125rem; color: rgba(255, 255, 255, 0.7); }

/* ===== Sections ===== */
.section { padding: 5rem 0; }
.section--gray { background: var(--color-bg-gray); }
.section--dark {
  background: var(--color-bg-dark);
  color: #fff;
}
.section__head {
  text-align: center;
  margin-bottom: 3rem;
}
.section__head--left { text-align: left; }
.section__head--light h2 { color: #fff; }
.section__head--light p { color: rgba(255, 255, 255, 0.65); }
.section__head h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}
.section__head p { color: var(--color-text-muted); max-width: 600px; margin-inline: auto; }
.section__head--left p { margin-inline: 0; }
.section__foot { text-align: center; margin-top: 2.5rem; }

/* ===== Tabs ===== */
.tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.tab {
  padding: 0.6rem 1.25rem;
  font-size: 0.9375rem;
  background: var(--color-bg-gray);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all 0.2s;
}
.tab--active,
.tab:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ===== Product Grid ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}
.product-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
}
.product-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.product-card__img {
  height: 200px;
  background: #f5f5f5;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.product-card__img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0.75rem;
}
.product-card__model {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  background: rgba(226, 6, 19, 0.08);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}
.product-card__features {
  list-style: none;
  margin-bottom: 0.75rem;
}
.product-card__features li {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  padding-left: 0.85rem;
  position: relative;
  margin-bottom: 0.25rem;
}
.product-card__features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 4px;
  height: 4px;
  background: var(--color-accent);
  border-radius: 50%;
}
.product-loading {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--color-text-muted);
}
.link-more--btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  font-family: inherit;
}
.product-card__body { padding: 1.25rem; }
.product-card__body h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}
.product-card__body p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}
.link-more {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
}
.link-more:hover { text-decoration: underline; }

/* ===== Product Modal ===== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
}
.modal__dialog {
  position: relative;
  background: #fff;
  border-radius: var(--radius-lg);
  max-width: 860px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-md);
}
.modal__close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 1;
  width: 36px;
  height: 36px;
  border: none;
  background: rgba(0, 0, 0, 0.06);
  border-radius: 50%;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  color: var(--color-text);
}
.modal__close:hover { background: rgba(0, 0, 0, 0.12); }
.modal__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  padding: 2rem;
}
.modal__img-wrap {
  background: #f5f5f5;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 240px;
}
.modal__img-wrap img {
  max-width: 100%;
  max-height: 320px;
  object-fit: contain;
  padding: 1rem;
}
.modal__info h3 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin: 0.5rem 0;
}
.modal__info p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}
@media (max-width: 768px) {
  .modal__content { grid-template-columns: 1fr; padding: 1.5rem; }
}

/* ===== Solutions ===== */
.solution-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}
.solution-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  border: 1px solid var(--color-border);
  transition: box-shadow 0.2s;
}
.solution-card:hover { box-shadow: var(--shadow-md); }
.solution-card__icon {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
  opacity: 0.35;
  margin-bottom: 0.75rem;
}
.solution-card h3 {
  font-size: 1.05rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}
.solution-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ===== About ===== */
.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.about__text p {
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}
.about__list {
  margin-bottom: 1.5rem;
}
.about__list li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
  font-size: 0.9375rem;
  color: var(--color-text);
}
.about__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}
.about__placeholder {
  aspect-ratio: 4 / 3;
  background: linear-gradient(145deg, #dce8f4, #b8cfe8);
  border-radius: var(--radius-lg);
  display: grid;
  place-items: center;
  color: var(--color-primary);
  font-size: 0.9375rem;
  opacity: 0.7;
}

/* ===== Brands ===== */
.brand-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}
.brand-item {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  transition: background 0.2s;
}
.brand-item:hover { background: rgba(255, 255, 255, 0.1); }

/* ===== News ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.news-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: #fff;
  overflow: hidden;
  transition: box-shadow 0.2s;
  display: flex;
  flex-direction: column;
}
.news-card:hover { box-shadow: var(--shadow-md); }
.news-card__img {
  height: 160px;
  background: #f5f5f5;
  overflow: hidden;
}
.news-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-card__body { padding: 1.25rem; flex: 1; display: flex; flex-direction: column; }
.news-card time,
.news-card__date {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}
.news-card h3 {
  font-size: 1rem;
  margin: 0.5rem 0;
  line-height: 1.4;
  flex: 1;
}
.news-card__link {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  font-weight: 600;
  color: var(--color-primary);
  text-align: left;
  cursor: pointer;
}
.news-card__link:hover { color: var(--color-accent); }
.news-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.modal__dialog--news { max-width: 720px; }
.modal__content--news {
  display: block;
  padding: 2rem;
}
.modal__content--news h3 {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin: 0.75rem 0 1rem;
  line-height: 1.4;
}
.modal__content--news p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

.link-more--ext {
  font-size: 0.8125rem;
  margin-left: 1rem;
  color: var(--color-text-muted);
}
.link-more--ext:hover { color: var(--color-accent); }
.product-card__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem;
}

/* ===== ISS ===== */
.iss-hero { padding-top: 2.5rem; }
.iss-hero__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: start;
}
.iss-hero h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--color-primary);
  margin: 0.75rem 0;
}
.iss-about {
  color: var(--color-text-muted);
  max-width: 640px;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}
.iss-hero__badge {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  text-align: center;
  min-width: 140px;
}
.iss-hero__badge strong {
  display: block;
  font-size: 2rem;
  color: var(--color-accent);
}
.iss-hero__badge span { font-size: 0.875rem; color: var(--color-text); }
.iss-hero__badge small { display: block; margin-top: 0.35rem; font-size: 0.75rem; color: var(--color-text-muted); }
.iss-tabs { margin-bottom: 2rem; }
.brand-item a { color: inherit; }
.brand-item a:hover { color: var(--color-accent); }

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

.breadcrumb {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}
.breadcrumb a { color: var(--color-accent); }

.product-detail__hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}
.product-detail__main-img {
  background: #f5f5f5;
  border-radius: var(--radius-lg);
  padding: 1rem;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-detail__main-img img {
  max-width: 100%;
  max-height: 360px;
  object-fit: contain;
}
.product-detail__thumbs {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}
.product-detail__thumb {
  width: 72px;
  height: 72px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  background: #f5f5f5;
}
.product-detail__thumb:hover { border-color: var(--color-accent); }
.product-detail h1 {
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  color: var(--color-primary);
  margin: 0.5rem 0;
}
.product-detail__tagline {
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}
.product-detail__summary { color: var(--color-text-muted); line-height: 1.8; margin-bottom: 1rem; }
.product-detail__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.25rem; }
.product-detail__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}
.product-detail__body h2 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin: 0 0 1rem;
}
.product-detail__body p {
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 1rem;
}
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.spec-table th,
.spec-table td {
  border: 1px solid var(--color-border);
  padding: 0.65rem 0.85rem;
  text-align: left;
  vertical-align: top;
}
.spec-table th {
  background: var(--color-bg-gray);
  width: 38%;
  font-weight: 600;
  color: var(--color-primary);
}
.iss-priority-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}
.iss-priority-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
  color: inherit;
}
.iss-priority-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.iss-priority-card__img {
  height: 160px;
  background: #f5f5f5;
  display: flex;
  align-items: center;
  justify-content: center;
}
.iss-priority-card__img img {
  max-height: 140px;
  max-width: 90%;
  object-fit: contain;
}
.iss-priority-card__body { padding: 1.25rem; }
.iss-priority-card__body h3 {
  font-size: 1rem;
  margin: 0.4rem 0;
  color: var(--color-primary);
}
.iss-priority-card__body p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}
.iss-priority-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.iss-priority-link {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--color-primary);
}
.iss-priority-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.product-detail-loading { padding: 4rem 0; text-align: center; color: var(--color-text-muted); }

@media (max-width: 768px) {
  .product-detail__hero,
  .product-detail__body { grid-template-columns: 1fr; }
}

.page-header { padding-top: 3rem; }

/* ===== Achievements ===== */
.achievement-blocks {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  height: 100%;
}
.achievement-block {
  display: block;
  padding: 1rem 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-gray);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.achievement-block:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}
.achievement-block__head {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}
.achievement-block__head strong {
  font-size: 1.5rem;
  color: var(--color-accent);
  line-height: 1;
}
.achievement-block__head span {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary);
}
.achievement-block p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.achievement-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.achievement-preview-col h3 {
  font-size: 1.125rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-accent);
}
.achievement-preview-col__desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}
.achievement-preview-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.achievement-preview-list li {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.achievement-preview-list a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.4;
}
.achievement-preview-list a:hover { color: var(--color-accent); }
.achievement-preview-list span {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.achievement-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2rem;
}
.achievement-summary__item {
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-gray);
}
.achievement-summary__item strong {
  display: block;
  font-size: 2rem;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.35rem;
}
.achievement-summary__item span {
  font-weight: 600;
  color: var(--color-primary);
}
.achievement-summary__item p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

.achievement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.achievement-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: #fff;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s;
}
.achievement-card:hover { box-shadow: var(--shadow-md); }
.achievement-card__media {
  display: block;
  height: 180px;
  background: var(--color-bg-gray);
  overflow: hidden;
}
.achievement-card__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0.5rem;
}
.achievement-card__pdf {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a1a1a 0%, #333 100%);
}
.achievement-card__pdf-label {
  font-size: 1.25rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.05em;
}
.achievement-card__body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.achievement-card__badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  background: rgba(226, 6, 19, 0.08);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
  margin-right: 0.35rem;
  align-self: flex-start;
}
.achievement-card__badge--aff {
  color: var(--color-primary);
  background: rgba(26, 26, 26, 0.06);
}
.achievement-preview-list em.achievement-preview-list__aff {
  font-style: normal;
  font-size: 0.75rem;
  color: var(--color-accent);
  font-weight: 600;
}
.achievement-card h3 {
  font-size: 1rem;
  line-height: 1.4;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}
.achievement-card__subtitle {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}
.achievement-card__desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  flex: 1;
  margin-bottom: 1rem;
  line-height: 1.6;
}

/* ===== ISS Resources ===== */
.iss-resource-preview {
  grid-template-columns: repeat(2, 1fr);
}
.iss-resource-summary {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.iss-resource-summary article {
  padding: 1rem 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: #fff;
}
.iss-resource-summary strong {
  font-size: 1.75rem;
  color: var(--color-accent);
  margin-right: 0.35rem;
}
.iss-resource-summary p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 0.35rem;
}
.iss-resource-intro {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}
.iss-resource-intro--block {
  padding: 1rem 1.25rem;
  background: var(--color-bg-gray);
  border-radius: var(--radius-lg);
}
.iss-resource-section {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: #fff;
  margin-bottom: 0.75rem;
  overflow: hidden;
}
.iss-resource-section summary {
  cursor: pointer;
  padding: 1rem 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.iss-resource-section summary::-webkit-details-marker { display: none; }
.iss-resource-section summary::after {
  content: "+";
  color: var(--color-accent);
  font-size: 1.25rem;
  font-weight: 400;
}
.iss-resource-section[open] summary::after { content: "−"; }
.iss-resource-section__body {
  padding: 0 1.25rem 1.25rem;
  border-top: 1px solid var(--color-border);
}
.iss-resource-section h4 {
  font-size: 1rem;
  margin: 1.25rem 0 0.75rem;
  color: var(--color-primary);
}
.iss-resource-section h5 {
  font-size: 0.875rem;
  margin: 1rem 0 0.5rem;
  color: var(--color-text-muted);
}
.iss-table-wrap {
  overflow-x: auto;
  margin-bottom: 1rem;
}
.iss-data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}
.iss-data-table th,
.iss-data-table td {
  border: 1px solid var(--color-border);
  padding: 0.5rem 0.65rem;
  text-align: left;
  vertical-align: top;
}
.iss-data-table thead th {
  background: var(--color-bg-gray);
  font-weight: 600;
  white-space: nowrap;
}
.iss-data-table tbody th {
  background: rgba(226, 6, 19, 0.04);
  font-weight: 600;
}
.iss-resource-footnote {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
  line-height: 1.6;
}
.iss-resource-refs {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  padding-left: 1.25rem;
  line-height: 1.6;
}
.iss-example-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  padding: 1rem 1.25rem 1.25rem;
}
.iss-example-card {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  text-align: left;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: #fff;
  padding: 0;
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.iss-example-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}
.iss-example-card img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  background: var(--color-bg-gray);
}
.iss-example-card__title {
  padding: 0.65rem 0.75rem 0.25rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.4;
}
.iss-example-card__product {
  padding: 0 0.75rem 0.65rem;
  font-size: 0.75rem;
  color: var(--color-accent);
}

/* ===== CTA / Contact ===== */
.cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: 4rem 0;
}
.cta__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.cta__text h2 {
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  margin-bottom: 0.75rem;
}
.cta__text p { color: rgba(255, 255, 255, 0.8); font-size: 0.9375rem; }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-family: inherit;
  font-size: 0.9375rem;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(255, 255, 255, 0.5); }
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: rgba(255, 255, 255, 0.12);
}

/* ===== Footer ===== */
.footer {
  background: #111111;
  color: rgba(255, 255, 255, 0.75);
  padding-top: 3rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2rem;
}
.footer__brand p {
  margin-top: 1rem;
  font-size: 0.875rem;
  line-height: 1.7;
}
.footer__col h4 {
  color: #fff;
  font-size: 0.9375rem;
  margin-bottom: 1rem;
}
.footer__col a,
.footer__col p {
  display: block;
  font-size: 0.875rem;
  margin-bottom: 0.4rem;
  color: rgba(255, 255, 255, 0.65);
}
.footer__col a:hover { color: var(--color-accent); }
.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1rem 0;
}
.footer__bottom-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.45);
}
.footer__bottom a { color: rgba(255, 255, 255, 0.45); }
.footer__bottom a:hover { color: rgba(255, 255, 255, 0.7); }

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }
  .hero__stats {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .stat { flex: 1; min-width: 120px; }
  .about,
  .cta__inner {
    grid-template-columns: 1fr;
  }
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
  .achievement-preview-grid,
  .achievement-summary {
    grid-template-columns: 1fr;
  }
  .iss-resource-preview {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav {
    position: fixed;
    top: calc(var(--header-h) + 32px);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s, opacity 0.25s;
  }
  .nav--open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav__link--cta { margin-left: 0; }
  .form-row { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .topbar__inner { justify-content: center; }
}