*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', sans-serif;
  background: #F5F6FA;
  color: #1A1A1A;
  -webkit-font-smoothing: antialiased;
}

/* ─── HEADER ─── */
.hdr {
  background: #1B5E20;
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 40px;
}

.hdr-inner {
  width: 100%;
  max-width: 1360px;
  margin: 0 auto;
}

.logo {
  color: #FFFFFF;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

/* ─── HERO ─── */
.hero {
  background: #ECEEF2;
  padding: 52px 40px;
  display: flex;
  justify-content: center;
}

.hero-inner {
  max-width: 800px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.hero-title {
  font-size: 36px;
  font-weight: 700;
  color: #1A1A1A;
  text-align: center;
}

.hero-sub {
  font-size: 16px;
  font-weight: 400;
  color: #666666;
  line-height: 1.5;
  text-align: center;
  max-width: 680px;
}

/* ─── CALCULATOR SECTION ─── */
.cwrp {
  background: #F5F6FA;
  padding: 48px 40px 56px;
}

.cwrp-inner {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  gap: 40px;
}

/* Card */
.card {
  background: #FFFFFF;
  border-radius: 10px;
  border: 1px solid #E5E5E5;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.071);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  flex: 1;
  min-width: 0;
}

.card-title {
  font-size: 18px;
  font-weight: 700;
  color: #1A1A1A;
}

/* Fields */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-label {
  font-size: 13px;
  font-weight: 500;
  color: #444444;
}

.field-input {
  height: 44px;
  border-radius: 6px;
  border: 1px solid #E5E5E5;
  background: #FAFAFA;
  padding: 0 14px;
  font-size: 14px;
  font-family: 'Inter', sans-serif;
  color: #1A1A1A;
  outline: none;
  transition: border-color 0.15s;
  width: 100%;
}

.field-input::placeholder {
  color: #BBBBBB;
}

.field-input:focus {
  border-color: #2E7D32;
  background: #FFFFFF;
}

/* Button */
.btn-calc {
  height: 48px;
  border-radius: 6px;
  background: #2E7D32;
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 700;
  font-family: 'Inter', sans-serif;
  border: none;
  cursor: pointer;
  width: 100%;
  transition: background 0.15s, transform 0.1s;
}

.btn-calc:hover {
  background: #256328;
}

.btn-calc:active {
  transform: scale(0.99);
}

/* Result */
.result {
  background: #E8F5E9;
  border-radius: 8px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.result-header {
  font-size: 11px;
  font-weight: 600;
  color: #888888;
  letter-spacing: 2px;
}

.result-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.result-label {
  font-size: 13px;
  font-weight: 400;
  color: #555555;
}

.result-value {
  font-size: 24px;
  font-weight: 700;
}

.result-value.green  { color: #2E7D32; }
.result-value.dark   { color: #1A1A1A; }
.result-value.teal   { color: #0D6E6E; }

/* ─── ATTENTION BLOCK ─── */
.attention {
  background: #FFFBEB;
  border-radius: 10px;
  border-top: 1px solid #F59E0B;
  border-right: 1px solid #F59E0B;
  border-bottom: 1px solid #F59E0B;
  border-left: 4px solid #F59E0B;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 280px;
  flex-shrink: 0;
}

.attention-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.attention-title {
  font-size: 15px;
  font-weight: 700;
  color: #92400E;
}

.attention-divider {
  border: none;
  border-top: 1px solid #FDE68A;
  margin: 0;
}

.attention-text {
  font-size: 13px;
  font-weight: 400;
  color: #78350F;
  line-height: 1.6;
}

/* ─── FAQ ─── */
.faq-section {
  background: #FFFFFF;
  padding: 60px 40px;
}

.faq-inner {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.faq-header {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-label {
  font-size: 11px;
  font-weight: 600;
  color: #888888;
  letter-spacing: 2px;
}

.faq-title {
  font-size: 26px;
  font-weight: 700;
  color: #1A1A1A;
}

.faq-list {
  border-radius: 10px;
  border: 1px solid #E5E5E5;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.063);
  overflow: hidden;
}

.faq-item {
  background: #FFFFFF;
}

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 500;
  color: #1A1A1A;
  text-align: left;
  gap: 12px;
}

.faq-q:hover {
  background: #FAFAFA;
}

.faq-icon {
  flex-shrink: 0;
  color: #888888;
  transition: transform 0.2s;
}

.faq-item.active .faq-icon {
  color: #2E7D32;
}

.faq-a {
  padding: 0 20px 18px;
}

.faq-a p {
  font-size: 14px;
  font-weight: 400;
  color: #666666;
  line-height: 1.5;
}

.faq-sep {
  border: none;
  border-top: 1px solid #E5E5E5;
  margin: 0;
}

/* ─── FOOTER ─── */
.footer {
  background: #1A2A1A;
  padding: 32px 40px;
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 184px;
}

.footer-logo {
  font-size: 16px;
  font-weight: 700;
  color: #FFFFFF;
}

.footer-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.footer-copy {
  font-size: 13px;
  font-weight: 400;
  color: #888888;
}

.footer-disc {
  font-size: 12px;
  font-weight: 400;
  color: #666666;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
  .cwrp-inner {
    flex-direction: column;
  }

  .attention {
    width: 100%;
  }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer-center {
    align-items: center;
  }

  .hero-title {
    font-size: 28px;
  }
}