.certificate-page {
  --line: rgba(212, 225, 244, 0.9);
  --title: #1b2431;
  --text: #4d5a6a;
  --muted: #7c8b9f;
  --shadow: 0 18px 40px rgba(53, 87, 140, 0.1);
  --shadow-soft: 0 26px 70px rgba(98, 128, 182, 0.1);
  min-height: 100vh;
  overflow: hidden;
  font: 16px/1.6 "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 50% 0%, rgba(190, 225, 255, 0.42), transparent 32%),
    radial-gradient(circle at 0% 18%, rgba(226, 233, 255, 0.52), transparent 28%),
    radial-gradient(circle at 100% 16%, rgba(223, 240, 255, 0.48), transparent 24%),
    linear-gradient(180deg, #f9fbff 0%, #ffffff 30%, #fdfefe 100%);
}

.certificate-page,
.certificate-page * {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #f7faff;
}

body.lightbox-open {
  overflow: hidden;
}

.page-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 78px 0 96px;
}

.certificate-section + .certificate-section {
  margin-top: 96px;
}

.section-heading {
  text-align: center;
  margin-bottom: 44px;
}

.heading-kicker {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: #a6b4c8;
}

.section-heading h2 {
  margin: 0;
  color: #1d2129;
  text-align: center;
  font-feature-settings: "liga" off, "clig" off;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 38px;
  font-style: normal;
  font-weight: 700;
  line-height: normal;
}

.heading-desc {
  margin: 16px 0 0;
  color: #4e5969;
  text-align: center;
  font-feature-settings: "liga" off, "clig" off;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 18px;
  font-style: normal;
  font-weight: 400;
  line-height: normal;
}

.certificate-grid {
  display: grid;
  gap: 24px;
}

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

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

.certificate-grid--spacious {
  gap: 30px;
}

.certificate-grid--wide {
  gap: 28px;
}

.certificate-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 14px 14px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.certificate-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
}

.certificate-card h3 {
  margin: 18px 0 0;
  color: #2b3038;
  font-size: 17px;
  line-height: 1.5;
  font-weight: 500;
}

.certificate-card .certificate-visual {
  flex-shrink: 0;
}

.certificate-card > h3:first-of-type {
  margin-top: auto;
  padding-top: 14px;
}

.certificate-section--honor .certificate-grid {
  gap: 14px;
}

.certificate-section--honor .certificate-card {
  padding: 6px 6px 12px;
  border-radius: 8px;
  border: 2px solid #fff;
  background: linear-gradient(180deg, #e8f2fa 0%, #fff 100%);
  box-shadow: 0 4px 12px 0 rgba(37, 73, 100, 0.12);
}

.certificate-section--honor .certificate-card h3 {
  margin-top: auto;
  padding-top: 12px;
  color: #333;
  text-align: center;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  font-style: normal;
  font-weight: 500;
  line-height: normal;
}

.certificate-section--honor .certificate-visual img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  padding: 0;
  margin: auto;
}

.certificate-section--honor .certificate-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: auto;
  height: 160px;
  padding: 6px;
}

.certificate-card p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.certificate-card--copyright,
.certificate-card--product {
  padding-bottom: 10px;
  background: transparent;
  border-color: transparent;
  box-shadow: none;
}

.certificate-card--copyright:hover,
.certificate-card--product:hover {
  transform: none;
  box-shadow: none;
}

.certificate-card--copyright h3,
.certificate-card--product h3 {
  margin-top: 20px;
  font-size: 18px;
  font-weight: 700;
}

.certificate-card--copyright .certificate-visual,
.certificate-card--product .certificate-visual {
  border: 1px solid #dbe5f2;
  border-radius: 8px;
  overflow: visible;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(246, 250, 255, 0.92)),
    repeating-linear-gradient(90deg, rgba(180, 201, 227, 0.14) 0, rgba(180, 201, 227, 0.14) 1px, transparent 1px, transparent 26px),
    repeating-linear-gradient(0deg, rgba(180, 201, 227, 0.12) 0, rgba(180, 201, 227, 0.12) 1px, transparent 1px, transparent 24px);
  box-shadow: inset 0 0 0 8px rgba(240, 246, 255, 0.95);
}

.certificate-card--copyright .certificate-visual::before,
.certificate-card--product .certificate-visual::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px dashed rgba(108, 145, 196, 0.45);
  border-radius: 4px;
}

.certificate-card--copyright .certificate-visual--soft,
.certificate-card--product .certificate-visual--soft {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(242, 250, 255, 0.96)),
    radial-gradient(circle at top left, rgba(182, 222, 255, 0.22), transparent 36%),
    repeating-linear-gradient(90deg, rgba(180, 201, 227, 0.14) 0, rgba(180, 201, 227, 0.14) 1px, transparent 1px, transparent 26px),
    repeating-linear-gradient(0deg, rgba(180, 201, 227, 0.12) 0, rgba(180, 201, 227, 0.12) 1px, transparent 1px, transparent 24px);
}

.certificate-card--copyright .certificate-visual--blueprint,
.certificate-card--product .certificate-visual--blueprint {
  box-shadow:
    inset 0 0 0 8px rgba(240, 246, 255, 0.95),
    0 14px 30px rgba(56, 92, 150, 0.12);
  background:
    linear-gradient(180deg, rgba(233, 248, 255, 0.98), rgba(244, 250, 255, 0.98)),
    radial-gradient(circle at top right, rgba(122, 198, 255, 0.16), transparent 36%),
    repeating-linear-gradient(90deg, rgba(118, 182, 224, 0.14) 0, rgba(118, 182, 224, 0.14) 1px, transparent 1px, transparent 26px),
    repeating-linear-gradient(0deg, rgba(118, 182, 224, 0.12) 0, rgba(118, 182, 224, 0.12) 1px, transparent 1px, transparent 24px);
}

.certificate-visual {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  border: 0;
  border-radius: 0;
  overflow: hidden;
  background: transparent;
  box-shadow: none;
}

.certificate-visual::before {
  content: none;
}

.certificate-visual img {
  position: relative;
  z-index: 1;
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  box-sizing: border-box;
  object-fit: contain;
  padding: 16px;
  cursor: zoom-in;
}

.certificate-visual--landscape {
  aspect-ratio: 1.28 / 0.82;
}

.certificate-visual--landscape-large {
  aspect-ratio: 1.36 / 0.84;
}

.certificate-card--product .certificate-visual img {
  padding: 10px;
}

.certificate-visual--portrait {
  aspect-ratio: 0.76 / 1;
}

.certificate-visual--soft {
  background: transparent;
}

.certificate-visual--warm {
  background: transparent;
}

.certificate-visual--dark {
  background: transparent;
}

.certificate-visual--blueprint {
  box-shadow: none;
  background: transparent;
}

.certificate-lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
}

.certificate-lightbox.is-open {
  display: flex;
}

.certificate-lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 18, 28, 0.76);
  backdrop-filter: blur(6px);
}

.certificate-lightbox__dialog {
  position: relative;
  z-index: 2;
  width: min(92vw, 1180px);
  max-height: 88vh;
  margin: 0;
  padding: 18px 18px 22px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
}

.certificate-lightbox__image {
  display: block;
  width: 100%;
  max-width: 100%;
  max-height: calc(88vh - 92px);
  margin: 0 auto;
  object-fit: contain;
}

.certificate-lightbox__caption {
  margin-top: 14px;
  color: #1d2129;
  text-align: center;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
}

.certificate-lightbox__close,
.certificate-lightbox__nav {
  position: absolute;
  z-index: 3;
  border: 0;
  color: #fff;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.certificate-lightbox__close {
  top: 22px;
  right: 22px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: 30px;
  line-height: 1;
  background: rgba(19, 31, 46, 0.62);
}

.certificate-lightbox__nav {
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(19, 31, 46, 0.62);
}

.certificate-lightbox__nav span {
  display: block;
  font-size: 34px;
  line-height: 1;
}

.certificate-lightbox__nav--prev {
  left: 24px;
}

.certificate-lightbox__nav--next {
  right: 24px;
}

.certificate-lightbox__nav:hover {
  transform: translateY(-50%) scale(1.05);
  background: rgba(19, 31, 46, 0.84);
}

.certificate-lightbox__close:hover {
  transform: scale(1.05);
  background: rgba(19, 31, 46, 0.84);
}

@media (max-width: 640px) {
  .certificate-lightbox__dialog {
    width: min(94vw, 94vw);
    padding: 14px 14px 18px;
    border-radius: 16px;
  }

  .certificate-lightbox__image {
    max-height: calc(84vh - 84px);
  }

  .certificate-lightbox__nav {
    width: 44px;
    height: 44px;
  }

  .certificate-lightbox__nav--prev {
    left: 10px;
  }

  .certificate-lightbox__nav--next {
    right: 10px;
  }

  .certificate-lightbox__close {
    top: 10px;
    right: 10px;
    width: 38px;
    height: 38px;
    font-size: 26px;
  }
}

@media (max-width: 1180px) {
  .page-shell {
    width: min(1080px, calc(100% - 32px));
  }
}

@media (max-width: 980px) {
  .certificate-grid--4,
  .certificate-grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .certificate-section + .certificate-section {
    margin-top: 82px;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: calc(100% - 24px);
    padding: 54px 0 70px;
  }

  .section-heading {
    margin-bottom: 30px;
  }

  .heading-kicker {
    letter-spacing: 0.18em;
  }

  .heading-desc {
    font-size: 15px;
  }

  .certificate-grid--4,
  .certificate-grid--3 {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .certificate-card {
    padding: 12px 12px 16px;
  }

  .certificate-card h3 {
    font-size: 16px;
  }

  .certificate-card--copyright h3,
  .certificate-card--product h3 {
    margin-top: 16px;
  }
}