/*
 * @kanway-css-index
 * 文件: css/solutions/solutions-smart-lighting.css
 * 层级: 单页
 * 引用页面: solution-smart-lighting.html
 * 依赖: header.css, contact.css
 * 修改指引: 智能灯光方案区块 .slt-*
 * 索引: css/00-样式文件索引.css
 */
/* Smart Lighting Solution — solution-smart-lighting.html */

.slt-page {
  --slt-primary: #1d5198;
  --slt-primary-dark: #153a6b;
  --slt-accent: #fc6b00;
  --slt-bg: #f8f9fb;
  --slt-text: #1a1a2e;
  --slt-muted: #4a5568;
}

.slt-hero .kh-blog-hero__lead {
  max-width: 36em;
}

.slt-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--slt-accent);
  margin-bottom: 8px;
}

.slt-section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 40px;
}

.slt-section-head h2 {
  margin: 0 0 12px;
  font-size: 28px;
  font-weight: 700;
  color: var(--slt-text);
}

.slt-section-head p {
  margin: 0;
  font-size: 16px;
  color: var(--slt-muted);
  line-height: 1.65;
}

.slt-section-head--compact {
  margin-bottom: 28px;
}

.slt-section-head--light h2,
.slt-section-head--light .slt-eyebrow {
  color: #fff;
}

.slt-section-head--light p {
  color: rgba(255, 255, 255, 0.85);
}

/* Intro */
.slt-intro {
  padding: 56px 0 64px;
  background: #fff;
}

.slt-intro__grid {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 420px);
  gap: 48px;
  align-items: center;
}

.slt-intro__copy h2 {
  margin: 0 0 16px;
  font-size: 30px;
  font-weight: 700;
  color: var(--slt-text);
  line-height: 1.25;
}

.slt-intro__copy > p {
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--slt-muted);
}

.slt-intro__points {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
}

.slt-intro__points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 15px;
  color: var(--slt-text);
}

.slt-intro__points .bx {
  flex-shrink: 0;
  font-size: 20px;
  color: var(--slt-accent);
  margin-top: 2px;
}

.slt-intro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.slt-intro__visual {
  text-align: center;
}

.slt-panel-mock {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  padding: 28px;
  border-radius: 16px;
  background: linear-gradient(145deg, #0a1628 0%, var(--slt-primary) 55%, #2a6099 100%);
  box-shadow: 0 16px 48px rgba(29, 81, 152, 0.25);
}

.slt-panel-mock--hotel {
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: auto 1fr;
}

.slt-panel-mock--hotel .slt-panel-mock__screen {
  grid-column: 1 / -1;
  height: 56px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}

.slt-panel-mock__screen-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.75);
}

.slt-panel-mock--hotel .slt-panel-mock__gang {
  height: 64px;
}

.slt-panel-mock--info .slt-panel-mock__gang--1 {
  background: linear-gradient(180deg, #c0392b 0%, #922b21 100%);
}

.slt-panel-mock--info .slt-panel-mock__gang--2 {
  background: linear-gradient(180deg, #27ae60 0%, #1e8449 100%);
}

.slt-panel-mock--info .slt-panel-mock__gang--3 {
  background: linear-gradient(180deg, #2980b9 0%, #1f618d 100%);
}

.slt-panel-mock__gang {
  height: 72px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  position: relative;
}

.slt-panel-mock__gang::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 28px;
  height: 28px;
  margin: -14px 0 0 -14px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  box-shadow: 0 0 12px rgba(252, 107, 0, 0.5);
}

.slt-intro__visual-caption {
  margin: 14px 0 0;
  font-size: 13px;
  color: var(--slt-muted);
}

/* Engineering specs */
.slt-specs {
  padding: 48px 0 56px;
  background: var(--slt-bg);
  border-top: 1px solid #e8ecf2;
}

.slt-specs__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 0;
}

.slt-specs__item {
  margin: 0;
  padding: 20px 22px;
  background: #fff;
  border-radius: 12px;
  border: 1px solid #e8ecf2;
}

.slt-specs__item dt {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--slt-primary);
}

.slt-specs__item dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--slt-muted);
}

/* System functions */
.slt-sysfn {
  padding: 64px 0;
  background: #fff;
}

.slt-sysfn__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.slt-sysfn-card {
  padding: 28px 24px;
  border-radius: 14px;
  background: var(--slt-bg);
  border: 1px solid #e8ecf2;
  border-top: 3px solid var(--slt-primary);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.slt-sysfn-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(29, 81, 152, 0.1);
}

.slt-sysfn-card .bx {
  font-size: 34px;
  color: var(--slt-accent);
  margin-bottom: 14px;
  display: block;
}

.slt-sysfn-card h4 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--slt-text);
}

.slt-sysfn-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--slt-muted);
}

/* Project value */
.slt-value {
  padding: 64px 0;
  background: linear-gradient(180deg, #f0f4fa 0%, var(--slt-bg) 100%);
  border-top: 1px solid #e8ecf2;
}

.slt-value__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.slt-value-card {
  padding: 26px 22px;
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
  border: 1px solid #e8ecf2;
  text-align: center;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.slt-value-card:hover {
  border-color: var(--slt-accent);
  box-shadow: 0 8px 24px rgba(252, 107, 0, 0.1);
}

.slt-value-card .bx {
  font-size: 36px;
  color: var(--slt-primary);
  margin-bottom: 12px;
  display: block;
}

.slt-value-card h4 {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--slt-text);
}

.slt-value-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--slt-muted);
  text-align: left;
}

/* Integration */
.slt-integration {
  padding: 64px 0;
  background: #fff;
}

.slt-integration__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.slt-integration-card {
  padding: 28px 22px;
  border-radius: 14px;
  background: var(--slt-bg);
  border: 1px solid #e8ecf2;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.slt-integration-card:hover {
  border-color: var(--slt-primary);
  box-shadow: 0 8px 24px rgba(29, 81, 152, 0.08);
}

.slt-integration-card .bx {
  font-size: 32px;
  color: var(--slt-accent);
  margin-bottom: 14px;
  display: block;
}

.slt-integration-card h4 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--slt-text);
}

.slt-integration-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--slt-muted);
}

/* Scenes */
.slt-scenes {
  padding: 64px 0;
  background: var(--slt-bg);
}

.slt-scenes__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.slt-scene-card {
  background: #fff;
  border-radius: 16px;
  padding: 32px 28px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  border-top: 4px solid var(--slt-primary);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.slt-scene-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(29, 81, 152, 0.12);
}

.slt-scene-card--featured {
  border-top-color: var(--slt-accent);
  box-shadow: 0 8px 28px rgba(252, 107, 0, 0.1);
}

.slt-scene-card__icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--slt-primary), #2a6099);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.slt-scene-card__icon .bx {
  font-size: 28px;
  color: #fff;
}

.slt-scene-card h3 {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 700;
  color: var(--slt-text);
}

.slt-scene-card > p {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slt-muted);
}

.slt-scene-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.slt-scene-card li {
  position: relative;
  padding: 6px 0 6px 18px;
  font-size: 13px;
  color: var(--slt-text);
}

.slt-scene-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--slt-accent);
}

/* Capabilities */
.slt-capabilities {
  padding: 64px 0;
  background: linear-gradient(135deg, var(--slt-primary-dark) 0%, var(--slt-primary) 100%);
}

.slt-capabilities__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.slt-cap-item {
  padding: 28px 24px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.slt-cap-item .bx {
  font-size: 36px;
  color: var(--slt-accent);
  margin-bottom: 14px;
  display: block;
}

.slt-cap-item h4 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: #fff;
}

.slt-cap-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.82);
}

/* Products */
.slt-products {
  padding: 64px 0;
  background: #fff;
}

.slt-products__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.slt-product-tile {
  display: block;
  padding: 24px 20px;
  border-radius: 14px;
  background: var(--slt-bg);
  border: 1px solid #e8ecf2;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.slt-product-tile:hover {
  border-color: var(--slt-primary);
  box-shadow: 0 8px 24px rgba(29, 81, 152, 0.1);
  transform: translateY(-4px);
}

.slt-product-tile__badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--slt-primary);
  background: rgba(29, 81, 152, 0.1);
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.slt-product-tile h4 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--slt-text);
}

.slt-product-tile > p {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--slt-muted);
}

.slt-product-tile__link {
  font-size: 13px;
  font-weight: 600;
  color: var(--slt-primary);
}

.slt-product-tile__link .bx {
  vertical-align: middle;
}

/* Flow */
.slt-flow {
  padding: 64px 0;
  background: var(--slt-bg);
}

.slt-flow__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.slt-flow__steps li {
  position: relative;
  padding: 28px 22px 24px;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
}

.slt-flow__num {
  display: block;
  font-size: 32px;
  font-weight: 800;
  color: var(--slt-primary);
  opacity: 0.25;
  line-height: 1;
  margin-bottom: 12px;
}

.slt-flow__steps h4 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--slt-text);
}

.slt-flow__steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--slt-muted);
}

/* Certs */
.slt-certs {
  padding: 40px 0;
  background: #fff;
  border-top: 1px solid #e8ecf2;
}

.slt-certs__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px 32px;
}

.slt-certs__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--slt-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.slt-certs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.slt-certs__list li {
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 700;
  color: var(--slt-primary);
  background: rgba(29, 81, 152, 0.08);
  border-radius: 8px;
  border: 1px solid rgba(29, 81, 152, 0.15);
}

.slt-certs__note {
  flex: 1 1 100%;
  margin: 0;
  font-size: 14px;
  color: var(--slt-muted);
}

/* CTA */
.slt-cta {
  padding: 56px 0 72px;
  background: linear-gradient(135deg, #0a1628 0%, var(--slt-primary-dark) 50%, var(--slt-primary) 100%);
}

.slt-cta__inner {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.slt-cta h2 {
  margin: 0 0 12px;
  font-size: 26px;
  font-weight: 700;
  color: #fff;
}

.slt-cta p {
  margin: 0 0 28px;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.65;
}

.slt-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

/* Buttons */
.slt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.slt-btn--primary {
  background: var(--slt-primary);
  color: #fff;
}

.slt-btn--primary:hover {
  background: var(--slt-primary-dark);
  color: #fff;
}

.slt-btn--outline {
  background: transparent;
  color: var(--slt-primary);
  border: 2px solid var(--slt-primary);
}

.slt-btn--outline:hover {
  background: var(--slt-primary);
  color: #fff;
}

.slt-btn--accent {
  background: var(--slt-accent);
  color: #fff;
}

.slt-btn--accent:hover {
  background: #e65c00;
  color: #fff;
}

.slt-btn--ghost {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.45);
}

.slt-btn--ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: #fff;
}

@media (max-width: 1100px) {
  .slt-intro__grid {
    grid-template-columns: 1fr;
  }

  .slt-specs__grid,
  .slt-sysfn__grid,
  .slt-value__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .slt-integration__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .slt-scenes__grid,
  .slt-capabilities__grid {
    grid-template-columns: 1fr;
  }

  .slt-products__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .slt-flow__steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .slt-specs__grid,
  .slt-sysfn__grid,
  .slt-value__grid,
  .slt-integration__grid,
  .slt-products__grid,
  .slt-flow__steps {
    grid-template-columns: 1fr;
  }

  .slt-intro__actions,
  .slt-cta__actions {
    flex-direction: column;
  }

  .slt-btn {
    width: 100%;
  }
}