/* ==========================================================================
   尧图网站设计 - 组件库
   核心：瀑布流磁吸卡片 + 独特交互组件
   ========================================================================== */

/* ---------- 网格系统 ---------- */
.grid {
  display: grid;
  gap: 30px;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ==========================================================================
   瀑布流磁吸卡片系统（核心特色）
   ========================================================================== */
.masonry {
  column-count: 3;
  column-gap: 28px;
}

.masonry .masonry-item {
  break-inside: avoid;
  margin-bottom: 28px;
  display: inline-block;
  width: 100%;
}

/* 磁吸卡片基础 */
.mag-card {
  background: var(--white);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid rgba(168, 213, 186, 0.3);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.4s ease,
              border-color 0.4s ease;
  position: relative;
  will-change: transform;
}

.mag-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--green-soft);
}

/* 磁吸光晕效果 */
.mag-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at var(--mx, 50%) var(--my, 50%),
    rgba(127, 176, 105, 0.08) 0%,
    transparent 50%
  );
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 1;
}

.mag-card:hover::before {
  opacity: 1;
}

/* ---------- 卡片图片区 ---------- */
.mag-card .card-img {
  position: relative;
  overflow: hidden;
}

.mag-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.mag-card:hover .card-img img {
  transform: scale(1.06);
}

.mag-card .card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 5px 14px;
  background: rgba(251, 249, 242, 0.92);
  backdrop-filter: blur(6px);
  border-radius: var(--r-pill);
  font-size: 12px;
  color: var(--green-deep);
  font-weight: 600;
  z-index: 2;
}

.mag-card .card-no {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  font-family: var(--font-en);
  color: var(--green-deep);
  z-index: 2;
}

/* ---------- 卡片内容区 ---------- */
.mag-card .card-body {
  padding: 26px 28px;
  position: relative;
  z-index: 2;
}

.mag-card .card-body h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: var(--ink);
  transition: color 0.3s ease;
}

.mag-card:hover .card-body h3 {
  color: var(--green-deep);
}

.mag-card .card-body p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.mag-card .card-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  color: var(--green-soft);
}

.mag-card .card-foot .more-link {
  color: var(--green-deep);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.3s ease;
}

.mag-card:hover .card-foot .more-link {
  gap: 8px;
}

/* ==========================================================================
   特性卡片（不同样式 - 渐变背景）
   ========================================================================== */
.feat-card {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 36px 30px;
  border: 1px solid var(--line);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
  height: 100%;
}

.feat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--green-soft), var(--blue-soft));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.feat-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.feat-card:hover::before {
  transform: scaleX(1);
}

.feat-card .feat-ico {
  width: 60px;
  height: 60px;
  border-radius: var(--r-md);
  background: linear-gradient(135deg, var(--green-mist), var(--blue-mist));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  transition: all 0.4s ease;
}

.feat-card:hover .feat-ico {
  background: linear-gradient(135deg, var(--green), var(--green-deep));
  transform: rotate(-6deg) scale(1.05);
}

.feat-card:hover .feat-ico svg {
  stroke: #fff;
}

.feat-card h3 {
  font-size: 19px;
  margin-bottom: 12px;
}

.feat-card p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.feat-card .feat-no {
  position: absolute;
  right: 24px;
  top: 20px;
  font-size: 42px;
  font-family: var(--font-en);
  color: var(--cream-3);
  font-weight: 700;
  line-height: 1;
}

/* ==========================================================================
   图文交错块（详情页用）
   ========================================================================== */
.split-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 54px;
  align-items: center;
  margin-bottom: 64px;
}

.split-block.reverse .split-img {
  order: 2;
}

.split-img {
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.split-img img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}

.split-img .img-badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  padding: 8px 18px;
  background: rgba(251, 249, 242, 0.95);
  backdrop-filter: blur(8px);
  border-radius: var(--r-pill);
  font-size: 13px;
  color: var(--green-deep);
  font-weight: 600;
}

.split-text .split-label {
  font-size: 13px;
  color: var(--green);
  letter-spacing: 3px;
  font-family: var(--font-en);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.split-text h3 {
  font-size: 26px;
  margin-bottom: 18px;
}

.split-text > p {
  color: var(--muted);
  margin-bottom: 18px;
  line-height: 1.9;
  font-size: 15px;
}

.split-text ul.check-list li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 13px;
  font-size: 14.5px;
  color: var(--body);
}

.split-text ul.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--green-mist);
}

.split-text ul.check-list li::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 11px;
  width: 8px;
  height: 4px;
  border-left: 2px solid var(--green-deep);
  border-bottom: 2px solid var(--green-deep);
  transform: rotate(-45deg);
}

/* ==========================================================================
   资讯列表卡片（横向流式）
   ========================================================================== */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.news-item {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 26px;
  background: var(--white);
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
  transition: all 0.35s ease;
}

.news-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(8px);
  border-color: var(--green-soft);
}

.news-item .n-thumb {
  position: relative;
  overflow: hidden;
  height: 100%;
  min-height: 160px;
}

.news-item .n-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.news-item:hover .n-thumb img {
  transform: scale(1.06);
}

.news-item .n-body {
  padding: 24px 28px 24px 0;
  display: flex;
  flex-direction: column;
}

.news-item .n-body h4 {
  font-size: 17.5px;
  color: var(--ink);
  margin-bottom: 10px;
  line-height: 1.5;
  transition: color 0.3s ease;
}

.news-item:hover .n-body h4 {
  color: var(--green-deep);
}

.news-item .n-body .n-excerpt {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.78;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item .n-foot {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--green-soft);
}

.news-item .n-foot .date {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.news-item .n-foot .read {
  color: var(--green-deep);
  font-weight: 600;
}

/* 紧凑文字列表（侧边/相关） */
.news-mini {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.news-mini .mini-item {
  display: flex;
  gap: 14px;
  align-items: center;
  padding: 12px;
  border-radius: var(--r-sm);
  transition: all 0.3s ease;
}

.news-mini .mini-item:hover {
  background: var(--green-mist);
}

.news-mini .mini-item .m-thumb {
  width: 84px;
  height: 64px;
  border-radius: var(--r-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.news-mini .mini-item .m-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-mini .mini-item .m-body h5 {
  font-size: 14px;
  color: var(--ink);
  line-height: 1.5;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.3s ease;
}

.news-mini .mini-item:hover .m-body h5 {
  color: var(--green-deep);
}

.news-mini .mini-item .m-body .m-date {
  font-size: 12px;
  color: var(--green-soft);
}

/* ==========================================================================
   CTA 行动召唤
   ========================================================================== */
.cta-band {
  background: linear-gradient(120deg, var(--green-ink) 0%, var(--green-deep) 60%, var(--blue-deep) 100%);
  border-radius: var(--r-xl);
  padding: 54px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(168, 213, 186, 0.2) 0%, transparent 70%);
}

.cta-band::after {
  content: "";
  position: absolute;
  left: 20%;
  top: -40px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(168, 200, 232, 0.15) 0%, transparent 70%);
}

.cta-band .cta-text h3 {
  color: #fff;
  font-size: 28px;
  margin-bottom: 10px;
  position: relative;
  z-index: 2;
}

.cta-band .cta-text p {
  color: rgba(251, 249, 242, 0.72);
  font-size: 15px;
  position: relative;
  z-index: 2;
}

.cta-band .cta-actions {
  display: flex;
  gap: 14px;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
}

/* ==========================================================================
   数字步骤
   ========================================================================== */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  position: relative;
}

.steps::before {
  content: "";
  position: absolute;
  top: 40px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: repeating-linear-gradient(
    90deg,
    var(--green-soft) 0,
    var(--green-soft) 8px,
    transparent 8px,
    transparent 16px
  );
  z-index: 0;
}

.step-item {
  text-align: center;
  position: relative;
}

.step-item .step-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--green-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 22px;
  font-size: 26px;
  font-family: var(--font-en);
  font-weight: 700;
  color: var(--green-deep);
  position: relative;
  z-index: 2;
  transition: all 0.4s ease;
}

.step-item:hover .step-circle {
  background: linear-gradient(135deg, var(--green), var(--green-deep));
  color: #fff;
  border-color: var(--green-deep);
  transform: scale(1.08);
}

.step-item h4 {
  font-size: 17px;
  margin-bottom: 8px;
}

.step-item p {
  font-size: 13.5px;
  color: var(--muted);
  padding: 0 10px;
}

/* ==========================================================================
   数据指标条
   ========================================================================== */
.metric-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}

.metric-row .metric {
  padding: 30px 16px;
  background: var(--white);
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  transition: all 0.3s ease;
}

.metric-row .metric:hover {
  border-color: var(--green-soft);
  box-shadow: var(--shadow-sm);
}

.metric-row .metric strong {
  display: block;
  font-size: 36px;
  color: var(--green-deep);
  font-family: var(--font-en);
  line-height: 1;
  margin-bottom: 8px;
}

.metric-row .metric span {
  font-size: 13.5px;
  color: var(--muted);
}

/* ==========================================================================
   返回顶部
   ========================================================================== */
.back-top {
  position: fixed;
  right: 30px;
  bottom: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green), var(--green-deep));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.35s ease;
  z-index: 80;
}

.back-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   响应式组件
   ========================================================================== */
@media (max-width: 1100px) {
  .masonry { column-count: 2; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .steps::before { display: none; }
  .cta-band { flex-direction: column; text-align: center; padding: 40px 30px; }
  .split-block { grid-template-columns: 1fr; gap: 36px; }
  .split-block.reverse .split-img { order: 0; }
}

@media (max-width: 700px) {
  .masonry { column-count: 1; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; }
  .news-item .n-thumb { min-height: 180px; }
  .news-item .n-body { padding: 18px 20px 22px; }
  .steps { grid-template-columns: 1fr; }
  .metric-row { grid-template-columns: 1fr 1fr; }
}