.diy-hero {
  margin-top: 82px;
  width: 100%;
  height: 610px;
  background-image: url("../assets/hero-diy.png");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
  background-color: #05080b;
  border-bottom: 4px solid #f4f6f8;
}

.diy-products {
  color: #111;
  padding: 42px 56px;
  background: #f4f6f8;
}

.section-title {
  margin-bottom: 24px;
}

.section-title h2 {
  font-size: 32px;
  text-transform: uppercase;
}

.section-title p {
  color: #555;
  margin-top: 8px;
}

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

.diy-product-card {
  background: #fff;
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 14px 34px rgba(0,0,0,.12);
}

.product-img {
  height: 190px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: white;
  font-size: 34px;
  font-weight: 900;
  margin-bottom: 18px;
}

.green-box {
  background: linear-gradient(135deg, #0d3b1a, #21c335);
}

.blue-box {
  background: linear-gradient(135deg, #0b1e3b, #2c7be5);
}

.purple-box {
  background: linear-gradient(135deg, #261044, #7b4de8);
}

.diy-product-card h3 {
  font-size: 21px;
  margin-bottom: 10px;
}

.diy-product-card p {
  color: #555;
  line-height: 1.5;
}

.diy-product-card ul {
  margin: 16px 0;
  padding-left: 18px;
  color: #333;
}

.diy-product-card li {
  margin-bottom: 7px;
}

.diy-product-card strong {
  display: block;
  color: var(--green);
  font-size: 24px;
  margin: 14px 0;
}

.buy-btn {
  display: block;
  text-align: center;
  background: linear-gradient(135deg, var(--green), #109321);
  color: white;
  padding: 14px;
  border-radius: 8px;
  font-weight: 900;
  text-transform: uppercase;
}

.solution-builder {
  padding: 46px;
  background: #f4f6f8;
  color: #111;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 28px;
}

.builder-left,
.builder-right {
  background: #071017;
  color: #fff;
  border-radius: 16px;
  padding: 30px;
  box-shadow: 0 16px 38px rgba(0,0,0,.18);
}

.builder-left h2,
.builder-right h3 {
  font-size: 30px;
  margin-bottom: 10px;
}

.builder-left p {
  color: var(--muted);
  margin-bottom: 22px;
  line-height: 1.6;
}

#diyForm {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

#diyForm .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

#diyForm input,
#diyForm select,
#diyForm textarea {
  width: 100%;
  background: #101820;
  border: 1px solid rgba(255,255,255,.12);
  color: #fff;
  padding: 15px;
  border-radius: 8px;
  outline: none;
}

#diyForm textarea {
  min-height: 110px;
  resize: vertical;
}

.option-group {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 12px;
  padding: 16px;
}

.option-group h4 {
  color: var(--green2);
  margin-bottom: 12px;
}

.option-group label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 6px 14px 6px 0;
  color: #dce6ee;
}

.option-group input {
  width: auto !important;
}

.delivery-box {
  background: rgba(33,195,53,.10);
  color: #dfffe4;
  border: 1px solid rgba(33,195,53,.35);
  padding: 14px;
  border-radius: 8px;
}

.pay-btn {
  width: 100%;
  border: 0;
  background: linear-gradient(135deg, var(--green), #109321);
  color: white;
  padding: 18px;
  border-radius: 9px;
  font-size: 16px;
  font-weight: 900;
  cursor: pointer;
}

.price-box {
  margin-top: 22px;
  background: #101820;
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 12px;
  padding: 18px;
}

.price-box div {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.price-box div:last-child {
  border-bottom: 0;
}

.price-box span {
  color: var(--muted);
}

.price-box strong {
  color: #fff;
}

.price-box .total strong {
  color: var(--green2);
  font-size: 28px;
}

.notice {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
  margin-top: 16px;
}

@media (max-width: 1050px) {
  .diy-product-grid,
  .solution-builder {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 650px) {
  .diy-hero {
    height: 520px;
    background-position: center center;
  }

  .diy-products,
  .solution-builder {
    padding: 22px;
  }

  #diyForm .form-row {
    grid-template-columns: 1fr;
  }

  .builder-left,
  .builder-right {
    padding: 22px;
  }
}