/* ==========================================================================
   Certificate Page Styles (证书列表页面专属样式)
   Header / Footer / 通用布局样式继承自 common.css
   配色沿用全站金色系：深金 #dca32c / #b8860b，亮金 #f5cb66
   ========================================================================== */

:root {
  --cert-gold: #d4952c;
  --cert-gold-deep: #b8860b;
  --cert-gold-bright: #f5cb66;
  --cert-ink: #221d13;
  --cert-gray: #6e6759;
  --cert-cream: #faf6ec;
  --cert-line: #e9dfc8;
}

.cert-page main {
  background: #ffffff;
  color: var(--cert-ink);
}

/* -------------------------------------------------------------
   Shared: Reveal Animation & Capsule Button (与全站一致)
------------------------------------------------------------- */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(48px);
  transition: opacity 1.25s cubic-bezier(0.16, 1, 0.3, 1), transform 1.25s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.is-revealed {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

@media (prefers-reduced-motion: reduce) {
  .reveal-on-scroll {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

.btn-primary-capsule {
  position: relative;
  overflow: hidden;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 44px;
  padding: 0 32px;
  border: 1.5px solid #dca32c;
  border-radius: 22px;
  background: #ffffff;
  color: #dca32c;
  font-size: 13.5px;
  font-weight: 800;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  text-decoration: none;
  transition: color 0.45s ease, transform 0.35s ease, box-shadow 0.35s ease;
}

.btn-primary-capsule::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #dca32c, #f5cb66);
  transform: translateX(-101%);
  transition: transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1;
}

.btn-primary-capsule:hover::before {
  transform: translateX(0);
}

.btn-primary-capsule:hover {
  color: #ffffff;
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(220, 163, 44, 0.35);
}

.btn-primary-capsule span,
.btn-primary-capsule i {
  position: relative;
  z-index: 2;
}

/* 导航右侧 CTA 按钮 (与全站 header 保持一致) */
.nav-cta-btn {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 26px;
  border-radius: 22px;
  background: linear-gradient(135deg, var(--cert-gold), var(--cert-gold-deep));
  color: #ffffff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(212, 149, 44, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.nav-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(212, 149, 44, 0.45);
}

/* -------------------------------------------------------------
   1. Certificates Hero Banner (金色奖杯装饰)
------------------------------------------------------------- */
.cert-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 38%, rgba(245, 203, 102, 0.4) 0%, rgba(245, 203, 102, 0) 46%),
    linear-gradient(135deg, #fdfaf2 0%, #faf3e2 55%, #f4e8cd 100%);
  border-bottom: 1px solid var(--cert-line);
}

.cert-hero__decor {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.cert-hero__decor i {
  position: absolute;
  color: var(--cert-gold);
}

.cert-hero__decor i:nth-child(1) {
  right: 8%;
  top: 50%;
  transform: translateY(-50%);
  font-size: clamp(120px, 14vw, 220px);
  opacity: 0.28;
}

.cert-hero__decor i:nth-child(2) {
  right: 26%;
  top: 14%;
  font-size: clamp(40px, 4.6vw, 70px);
  opacity: 0.22;
}

.cert-hero__decor i:nth-child(3) {
  right: 3%;
  bottom: 10%;
  font-size: clamp(36px, 4vw, 60px);
  opacity: 0.2;
}

.cert-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: clamp(44px, 5vw, 72px);
  padding-bottom: clamp(44px, 5vw, 72px);
}

.cert-hero__title {
  margin: 0;
  font-size: clamp(40px, 4.8vw, 68px);
  font-weight: 800;
  letter-spacing: 3px;
  color: var(--cert-gold-deep);
}

.cert-hero__underline {
  display: block;
  width: 84px;
  height: 4px;
  margin-top: 16px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cert-gold), var(--cert-gold-bright));
}

.cert-hero__sub {
  margin: 20px 0 0;
  max-width: 620px;
  font-size: clamp(14.5px, 1.3vw, 17px);
  line-height: 1.8;
  color: var(--cert-gray);
}

.cert-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  font-size: 14px;
}

.cert-hero__breadcrumb a {
  color: var(--cert-gray);
  text-decoration: none;
  transition: color 0.3s ease;
}

.cert-hero__breadcrumb a:hover {
  color: var(--cert-gold-deep);
}

.cert-hero__breadcrumb .breadcrumb-arrow {
  font-size: 10px;
  color: var(--cert-gold);
}

.cert-hero__breadcrumb .breadcrumb-current {
  color: var(--cert-gold-deep);
  font-weight: 700;
}

/* -------------------------------------------------------------
   2. 分类筛选标签列表
------------------------------------------------------------- */
.cert-main {
  padding: clamp(40px, 4.4vw, 64px) 0 clamp(56px, 6vw, 88px);
}

.cert-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: clamp(32px, 3.6vw, 52px);
}

.cert-filter__tab {
  padding: 9px 22px;
  border: 1px solid var(--cert-line);
  border-radius: 20px;
  background: #ffffff;
  color: var(--cert-gray);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.4px;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.3s ease, border-color 0.3s ease, background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.cert-filter__tab:hover {
  color: var(--cert-gold-deep);
  border-color: var(--cert-gold);
  transform: translateY(-2px);
}

.cert-filter__tab.is-active {
  background: linear-gradient(135deg, var(--cert-gold), var(--cert-gold-deep));
  border-color: var(--cert-gold);
  color: #ffffff;
  box-shadow: 0 6px 16px rgba(212, 149, 44, 0.32);
}

/* -------------------------------------------------------------
   3. 证书卡片网格
------------------------------------------------------------- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(20px, 2.4vw, 30px);
}

.cert-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.cert-card.is-hidden {
  display: none;
}

/* 金色描边相框 (可点击放大) */
.cert-card__frame {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  padding: 10px;
  border: 2px solid var(--cert-gold);
  border-radius: 6px;
  background: #ffffff;
  cursor: zoom-in;
  box-shadow: 0 10px 26px rgba(184, 134, 11, 0.12);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.cert-card__frame::after {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid rgba(212, 149, 44, 0.45);
  border-radius: 3px;
  pointer-events: none;
}

.cert-card__frame:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(184, 134, 11, 0.24);
}

.cert-card__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 3px;
  display: block;
}

/* 悬停放大预览提示 */
.cert-card__frame::before {
  content: "\f00e";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  color: #ffffff;
  background: rgba(34, 29, 19, 0.42);
  border-radius: 6px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.cert-card__frame:hover::before {
  opacity: 1;
}

.cert-card__name {
  margin: 16px 0 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--cert-ink);
}

.cert-card__category {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--cert-gray);
}

/* -------------------------------------------------------------
   4. 品质承诺宣传条
------------------------------------------------------------- */
.cert-cta {
  padding: clamp(48px, 5vw, 76px) 0;
  background:
    radial-gradient(circle at 90% 20%, rgba(245, 203, 102, 0.28) 0%, rgba(245, 203, 102, 0) 42%),
    linear-gradient(135deg, #fdfaf2, #f6ecd4);
  border-top: 1px solid var(--cert-line);
}

.cert-cta__inner {
  text-align: center;
}

.cert-cta__title {
  margin: 0;
  font-size: clamp(22px, 2.6vw, 34px);
  font-weight: 800;
  color: var(--cert-ink);
}

.cert-cta__desc {
  margin: 14px auto 0;
  max-width: 640px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--cert-gray);
}

/* -------------------------------------------------------------
   5. 证书放大灯箱 (遮罩层)
------------------------------------------------------------- */
.cert-lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(10px, 2vw, 26px);
  padding: clamp(16px, 4vw, 48px);
  background: rgba(18, 14, 8, 0.78);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.cert-lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.cert-lightbox__body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  max-width: min(560px, 88vw);
  transform: scale(0.94);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.cert-lightbox.is-open .cert-lightbox__body {
  transform: scale(1);
}

.cert-lightbox__body img {
  width: 100%;
  max-height: 68vh;
  object-fit: contain;
  border: 6px solid var(--cert-gold);
  border-radius: 6px;
  background: #ffffff;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
}

.cert-lightbox__caption {
  text-align: center;
}

.cert-lightbox__caption h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  color: #ffffff;
}

.cert-lightbox__caption p {
  margin: 6px 0 0;
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.72);
}

.cert-lightbox__close {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
  font-size: 20px;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.3s ease;
}

.cert-lightbox__close:hover {
  background: var(--cert-gold);
  transform: rotate(90deg);
}

.cert-lightbox__arrow {
  width: 46px;
  height: 46px;
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.3s ease;
}

.cert-lightbox__arrow:hover {
  background: var(--cert-gold);
  transform: scale(1.08);
}

/* -------------------------------------------------------------
   Responsive (响应式适配)
------------------------------------------------------------- */
@media (max-width: 1080px) {
  .cert-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

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

  .cert-hero__decor i:nth-child(1) {
    opacity: 0.16;
  }
}

@media (max-width: 520px) {
  .cert-grid {
    grid-template-columns: 1fr;
    max-width: 340px;
    margin: 0 auto;
  }

  .cert-lightbox__arrow {
    width: 38px;
    height: 38px;
  }
}

@media (max-width: 1200px) {
  .nav-cta-btn {
    display: none;
  }
}