/* ==========================================================================
   尧图网站设计 - 首页专属样式
   核心：全屏Hero + 瀑布流磁吸 + 独特非通用布局
   ========================================================================== */

/* ==========================================================================
   Hero 全屏 Banner（非居中常规式，采用斜切分屏）
   ========================================================================== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(150deg, #2D5028 0%, #3A6B9C 100%);
  padding-top: var(--nav-h);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, rgba(45, 80, 40, 0.88) 0%, rgba(58, 107, 156, 0.5) 55%, transparent 100%);
}

/* 斜切装饰 */
.hero-shape {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 3;
  pointer-events: none;
}

.hero-shape svg {
  width: 100%;
  height: 80px;
  display: block;
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 18px;
  border-radius: var(--r-pill);
  background: rgba(168, 213, 186, 0.15);
  border: 1px solid rgba(168, 213, 186, 0.35);
  color: var(--green-soft);
  font-size: 13px;
  letter-spacing: 1.5px;
  margin-bottom: 26px;
}

.hero-tag .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green-soft);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero h1 {
  color: #fff;
  font-size: 58px;
  line-height: 1.15;
  letter-spacing: 1.5px;
  margin-bottom: 24px;
  max-width: 780px;
}

.hero h1 .grad {
  background: linear-gradient(135deg, var(--green-soft), var(--blue-soft));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .hero-sub {
  color: rgba(251, 249, 242, 0.82);
  font-size: 18px;
  max-width: 600px;
  margin-bottom: 38px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 50px;
  margin-top: 60px;
  padding-top: 36px;
  border-top: 1px solid rgba(251, 249, 242, 0.15);
  flex-wrap: wrap;
}

.hero-stats .stat strong {
  display: block;
  font-size: 40px;
  color: var(--green-soft);
  font-family: var(--font-en);
  line-height: 1;
}

.hero-stats .stat span {
  color: rgba(251, 249, 242, 0.68);
  font-size: 13.5px;
  margin-top: 8px;
  display: block;
}

/* 滚动提示 */
.hero-scroll {
  position: absolute;
  bottom: 100px;
  right: 50px;
  z-index: 3;
  color: rgba(251, 249, 242, 0.55);
  font-size: 11px;
  letter-spacing: 2px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  writing-mode: vertical-rl;
}

.hero-scroll .mouse {
  width: 22px;
  height: 36px;
  border: 1.5px solid rgba(251, 249, 242, 0.35);
  border-radius: 12px;
  position: relative;
  writing-mode: horizontal-tb;
}

.hero-scroll .mouse::after {
  content: "";
  position: absolute;
  top: 7px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 7px;
  background: var(--green-soft);
  border-radius: 2px;
  animation: scrollWheel 1.6s infinite;
}

@keyframes scrollWheel {
  0% { opacity: 1; top: 7px; }
  100% { opacity: 0; top: 18px; }
}

/* ==========================================================================
   核心板块入口（瀑布流磁吸卡片 - 首页核心特色区）
   非常规三栏/四栏网格，而是错落瀑布流
   ========================================================================== */
.module-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  grid-auto-flow: dense;
}

/* 部分卡片跨列，形成瀑布流错落感 */
.module-card {
  background: var(--white);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.4s ease;
  position: relative;
  will-change: transform;
}

.module-card.size-lg {
  grid-column: span 2;
  grid-row: span 2;
}

.module-card.size-wide {
  grid-column: span 2;
}

.module-card:hover {
  transform: translateY(-10px) scale(1.01);
  box-shadow: var(--shadow-lg);
}

.module-card .mod-img {
  position: relative;
  overflow: hidden;
  height: 200px;
}

.module-card.size-lg .mod-img {
  height: 320px;
}

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

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

.module-card .mod-img .mod-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(45, 80, 40, 0.5) 0%, transparent 50%);
  display: flex;
  align-items: flex-end;
  padding: 20px;
}

.module-card .mod-img .mod-cat {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(251, 249, 242, 0.9);
  border-radius: var(--r-pill);
  font-size: 12px;
  color: var(--green-deep);
  font-weight: 600;
}

.module-card .mod-body {
  padding: 24px 26px;
}

.module-card .mod-body .mod-no {
  font-size: 13px;
  color: var(--green);
  letter-spacing: 2px;
  font-family: var(--font-en);
  margin-bottom: 8px;
}

.module-card .mod-body h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: var(--ink);
}

.module-card.size-lg .mod-body h3 {
  font-size: 24px;
}

.module-card .mod-body p {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 14px;
}

.module-card .mod-body .mod-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--green-deep);
  transition: gap 0.3s ease;
}

.module-card:hover .mod-body .mod-link {
  gap: 10px;
}

/* ==========================================================================
   教程预览（首页 - 横向卡片流，区别于瀑布流）
   ========================================================================== */
.tut-preview {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.tut-card {
  background: var(--white);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  transition: all 0.4s ease;
  display: flex;
  flex-direction: column;
}

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

.tut-card .tut-thumb {
  position: relative;
  height: 180px;
  overflow: hidden;
}

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

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

.tut-card .tut-level {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  font-size: 11.5px;
  font-weight: 600;
  backdrop-filter: blur(6px);
}

.tut-card .tut-level.lvl-1 {
  background: rgba(168, 213, 186, 0.92);
  color: var(--green-ink);
}

.tut-card .tut-level.lvl-2 {
  background: rgba(168, 200, 232, 0.92);
  color: var(--blue-deep);
}

.tut-card .tut-level.lvl-3 {
  background: rgba(251, 249, 242, 0.92);
  color: var(--ink);
}

.tut-card .tut-body {
  padding: 24px 26px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.tut-card .tut-body .tut-cat {
  font-size: 12px;
  color: var(--green);
  letter-spacing: 2px;
  font-family: var(--font-en);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.tut-card .tut-body h3 {
  font-size: 17px;
  margin-bottom: 10px;
  line-height: 1.5;
  color: var(--ink);
  transition: color 0.3s ease;
}

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

.tut-card .tut-body p {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 16px;
  flex: 1;
}

.tut-card .tut-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12.5px;
  color: var(--green-soft);
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.tut-card .tut-foot .read-more {
  color: var(--green-deep);
  font-weight: 600;
}

/* ==========================================================================
   配色色板展示区（首页独特组件）
   ========================================================================== */
.palette-showcase {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.palette-card {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--white);
  transition: all 0.4s ease;
}

.palette-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.palette-card .swatch-row {
  display: flex;
  height: 100px;
}

.palette-card .swatch {
  flex: 1;
  transition: flex 0.3s ease;
}

.palette-card:hover .swatch:hover {
  flex: 2;
}

.palette-card .pal-body {
  padding: 22px 24px;
}

.palette-card .pal-body .pal-name {
  font-size: 12px;
  color: var(--green);
  letter-spacing: 2px;
  font-family: var(--font-en);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.palette-card .pal-body h4 {
  font-size: 17px;
  margin-bottom: 8px;
}

.palette-card .pal-body p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}

/* ==========================================================================
   工具速查卡（首页独特组件 - 横向滚动）
   ========================================================================== */
.tool-scroll {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.tool-mini {
  background: var(--white);
  border-radius: var(--r-md);
  padding: 28px 24px;
  border: 1px solid var(--line);
  transition: all 0.4s ease;
  text-align: center;
}

.tool-mini:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-sm);
  border-color: var(--green-soft);
}

.tool-mini .tool-ico {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: var(--r-md);
  background: linear-gradient(135deg, var(--green-mist), var(--blue-mist));
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s ease;
}

.tool-mini:hover .tool-ico {
  background: linear-gradient(135deg, var(--green), var(--green-deep));
  transform: rotate(-6deg);
}

.tool-mini:hover .tool-ico svg {
  stroke: #fff;
}

.tool-mini h4 {
  font-size: 15px;
  margin-bottom: 6px;
}

.tool-mini p {
  font-size: 12.5px;
  color: var(--muted);
}

/* ==========================================================================
   首页响应式
   ========================================================================== */
@media (max-width: 1100px) {
  .module-grid { grid-template-columns: repeat(2, 1fr); }
  .module-card.size-lg { grid-column: span 2; grid-row: auto; }
  .module-card.size-wide { grid-column: span 2; }
  .tut-preview { grid-template-columns: repeat(2, 1fr); }
  .palette-showcase { grid-template-columns: repeat(2, 1fr); }
  .tool-scroll { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 44px; }
  .hero-scroll { display: none; }
}

@media (max-width: 700px) {
  .hero { min-height: auto; padding: calc(var(--nav-h) + 40px) 0 60px; }
  .hero h1 { font-size: 32px; }
  .hero .hero-sub { font-size: 15px; }
  .hero-stats { gap: 26px; }
  .hero-stats .stat strong { font-size: 28px; }
  .module-grid { grid-template-columns: 1fr; }
  .module-card.size-lg, .module-card.size-wide { grid-column: span 1; }
  .tut-preview { grid-template-columns: 1fr; }
  .palette-showcase { grid-template-columns: 1fr; }
  .tool-scroll { grid-template-columns: 1fr 1fr; }
}