:root {
  --green-dark: #0f5f34;
  --green-deep: #08351f;
  --green: #2f9a56;
  --green-light: #62b978;
  --green-soft: #e8f5e8;
  --green-pale: #f3faf1;
  --cream: #fffaf1;
  --red: #b62d2f;
  --text: #06170e;
  --muted: #24382d;
  --white: #ffffff;
  --border: #cfe5cb;
  --shadow: 0 18px 45px rgba(18, 75, 39, 0.11);
  --shadow-soft: 0 10px 28px rgba(18, 75, 39, 0.08);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  text-decoration: none;
  color: #b62d2f;

}

.df-container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

/* HEADER */

.df-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(31, 107, 58, 0.14);
}

.df-header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.df-logo {
  display: flex;
  align-items: center;
  width: 150px;
}

.df-logo img {
  max-width: 150px;
  max-height: 52px;
  object-fit: contain;
}

.df-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.df-nav span {
  color: #173c27;
  font-size: 15px;
  font-weight: 900;
}

/* TOP IMAGE */

.df-top-banner {
  width: 100%;
  overflow: hidden;
  background: var(--green-pale);
}

.df-top-banner img {
  width: 100%;
  height: clamp(300px, 29vw, 500px);
  object-fit: cover;
  object-position: center;
}

/* HERO */

.df-hero {
  padding: 72px 0 78px;
  background:
    radial-gradient(circle at 8% 8%, rgba(47, 154, 86, 0.16), transparent 28%),
    radial-gradient(circle at 95% 18%, rgba(182, 45, 47, 0.06), transparent 26%),
    linear-gradient(135deg, #ffffff 0%, #f3faf1 52%, #edf7ea 100%);
}

.df-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) 390px;
  gap: 56px;
  align-items: center;
}

.df-label {
  display: inline-flex;
  margin: 0 0 18px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--green-dark);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.df-hero h1 {
  max-width: 780px;
  margin: 0 0 24px;
  color: var(--green-dark);
  font-size: clamp(40px, 4.4vw, 62px);
  line-height: 1.05;
  letter-spacing: -0.05em;
}

.df-hero-lead {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.df-hero p,
.df-section p,
.df-science-section p {
  color: var(--muted);
  font-size: 17px;
}

.df-hero-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 760px;
  margin: 30px 0 28px;
}

.df-hero-points div {
  padding: 18px 18px 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.df-hero-points strong {
  display: block;
  margin-bottom: 4px;
  color: var(--green-dark);
  font-size: 25px;
  line-height: 1.1;
}

.df-hero-points span {
  display: block;
  color: var(--text);
  font-size: 14px;
  font-weight: 800;
  line-height: 1.35;
}

.df-hero-product {
  position: relative;
  border-radius: 30px;
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: 0 24px 60px rgba(18, 75, 39, 0.14);
  overflow: hidden;
}

.df-hero-product::before {
  content: "";
  position: absolute;
  inset: 16px;
  border-radius: 24px;
  border: 1px solid rgba(47, 154, 86, 0.14);
  pointer-events: none;
}

.df-hero-product-img {
  padding: 18px 18px 0;
  background: linear-gradient(180deg, #f7fcf4 0%, #ffffff 100%);
}

.df-hero-product-img img {
  width: 100%;
  height: 255px;
  object-fit: cover;
  object-position: center;
  border-radius: 22px;
}

.df-hero-product-info {
  padding: 28px 30px 32px;
}

.df-hero-product-info p {
  margin: 0 0 8px;
  color: var(--green-dark);
  font-size: 14px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.df-hero-product-info strong {
  display: block;
  margin-bottom: 12px;
  color: var(--green-deep);
  font-size: 29px;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.df-hero-product-info span {
  display: block;
  color: var(--muted);
  font-size: 16px;
}

/* LISTS */

.df-check-list,
.df-dot-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.df-check-list li {
  position: relative;
  margin: 10px 0;
  padding-left: 34px;
  font-weight: 900;
  color: var(--text);
}

.df-check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 2px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--green);
  color: var(--white);
  font-size: 14px;
  font-weight: 900;
}

.df-dot-list li {
  position: relative;
  margin: 9px 0;
  padding-left: 22px;
  color: var(--text);
}

.df-dot-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}

/* SECTIONS */

.df-section {
  padding: 72px 0;
}

.df-soft {
  background: var(--green-pale);
}

.df-two-col {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.86fr);
  gap: 52px;
  align-items: center;
}

.df-section h2 {
  margin: 0 0 22px;
  color: var(--green-dark);
  font-size: clamp(30px, 3.3vw, 46px);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.df-section h3 {
  margin: 0 0 18px;
  color: var(--green-dark);
  font-size: 25px;
  line-height: 1.18;
}

.df-card {
  padding: 32px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.df-card h2 {
  font-size: clamp(26px, 2.7vw, 38px);
}

/* IMAGE SECTION */

.df-image-section {
  padding: 18px 0 58px;
  background: var(--white);
}

.df-image-section img {
  width: 100%;
  height: clamp(240px, 28vw, 500px);
  object-fit: cover;
  object-position: center;
  border-radius: 26px;
  box-shadow: var(--shadow);
}

/* SECTION TITLE */

.df-section-title {
  max-width: 880px;
  margin: 0 auto 42px;
  text-align: center;
}

.df-section-title h2 {
  margin-bottom: 18px;
}

.df-section-title p {
  margin-left: auto;
  margin-right: auto;
}

/* BENEFITS */

.df-benefits-box {
  padding: 36px;
  border-radius: 28px;
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.df-check-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.df-check-grid li {
  position: relative;
  padding-left: 32px;
  font-weight: 900;
  color: var(--text);
}

.df-check-grid li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 900;
}

/* SCIENCE */

.df-science-section {
  padding: 58px 0;
  background: #ffffff;
}

.df-science-card {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 38px;
  align-items: center;
  padding: 42px;
  border-radius: 32px;
  background:
    radial-gradient(circle at top left, rgba(47, 154, 86, 0.12), transparent 34%),
    linear-gradient(135deg, #ffffff 0%, #f7fcf4 100%);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.df-science-text h2 {
  margin: 0 0 18px;
  color: var(--green-dark);
  font-size: clamp(31px, 3.2vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.df-science-text p:last-child {
  margin-bottom: 0;
}

.df-science-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.df-science-points div {
  padding: 22px;
  border-radius: 22px;
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(18, 75, 39, 0.06);
}

.df-science-points span {
  display: inline-flex;
  margin-bottom: 10px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
}

.df-science-points strong {
  display: block;
  margin-bottom: 7px;
  color: var(--green-deep);
  font-size: 18px;
  line-height: 1.25;
}

.df-science-points p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

/* FORMULA */

.df-formula-section {
  background: var(--white);
}

.df-formula-section .df-section-title {
  text-align: left;
  margin-left: 0;
}

.df-formula-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.df-formula-card {
  padding: 28px;
  border-radius: 22px;
  background: linear-gradient(180deg, #ffffff 0%, #f7fcf4 100%);
  border: 1px solid var(--border);
  box-shadow: 0 12px 30px rgba(25, 80, 45, 0.07);
}

.df-formula-card h3 {
  margin: 0 0 18px;
  color: var(--green-dark);
  font-size: 23px;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.df-components {
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.df-components ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.df-components li {
  position: relative;
  margin: 9px 0;
  padding-left: 18px;
  color: var(--text);
  font-size: 15px;
  font-weight: 900;
}

.df-components li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
}

/* PRODUCT HIGHLIGHTS */

.df-highlight-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.df-highlight-grid li {
  position: relative;
  min-height: 170px;
  padding: 24px;
  border-radius: 22px;
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.df-highlight-grid span {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.df-highlight-grid strong {
  display: block;
  margin-bottom: 10px;
  color: var(--green-deep);
  font-size: 20px;
  line-height: 1.2;
}

.df-highlight-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

/* FAQ */

.df-faq {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.df-faq details {
  border-radius: 18px;
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: 0 10px 26px rgba(25, 80, 45, 0.07);
}

.df-faq summary {
  cursor: pointer;
  padding: 22px 24px;
  color: var(--green-dark);
  font-size: 18px;
  font-weight: 900;
}

.df-faq details p {
  margin: 0;
  padding: 0 24px 24px;
}

/* PRODUCT SUMMARY */

.df-product-summary {
  padding: 82px 0;
  background:
    radial-gradient(circle at top right, rgba(63, 155, 88, 0.14), transparent 35%),
    linear-gradient(180deg, var(--cream) 0%, var(--green-pale) 100%);
}

.df-summary-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 42px;
  align-items: center;
  padding: 34px;
  border-radius: 30px;
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.df-summary-image img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  object-position: 72% center;
  border-radius: 24px;
}

.df-summary-content h2 {
  margin: 0 0 14px;
  color: var(--green-dark);
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.06;
  letter-spacing: -0.045em;
}

.df-summary-content h3 {
  margin: 0 0 26px;
  max-width: 620px;
  color: var(--text);
  font-size: 27px;
  line-height: 1.22;
}

.df-order-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.df-order-list li {
  position: relative;
  margin: 12px 0;
  padding-left: 34px;
  color: var(--text);
  font-size: 19px;
  font-weight: 900;
}

.df-order-list li::before {
  content: "✔";
  position: absolute;
  left: 0;
  color: var(--green);
}

/* NOTICE */

.df-notice {
  padding: 50px 0;
  background: #fff5f5;
  border-top: 1px solid #ffd6d6;
}

.df-notice h2 {
  margin: 0 0 14px;
  color: var(--red);
  font-size: 32px;
}

.df-notice p {
  max-width: 1000px;
  margin: 0;
  color: #5c2428;
}

/* FOOTER */

.df-footer {
  padding: 32px 0;
  background: #0f2e1d;
  color: var(--white);
}

.df-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.df-footer strong {
  display: block;
  font-size: 26px;
  letter-spacing: 0.04em;
}

.df-footer p {
  margin: 4px 0 0;
  color: rgba(255, 255, 255, 0.78);
}

/* TABLET */

@media (max-width: 1050px) {
  .df-nav {
    gap: 18px;
  }

  .df-hero-grid,
  .df-two-col,
  .df-science-card,
  .df-summary-card {
    grid-template-columns: 1fr;
  }

  .df-hero-product {
    max-width: 520px;
  }

  .df-formula-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .df-highlight-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* MOBILE */

@media (max-width: 700px) {
  .df-container {
    width: min(100% - 24px, 1180px);
  }

  .df-header-inner {
    min-height: 64px;
  }

  .df-logo {
    width: 130px;
  }

  .df-logo img {
    max-width: 130px;
    max-height: 46px;
  }

  .df-nav {
    display: none;
  }

  .df-top-banner img {
    height: 250px;
  }

  .df-hero {
    padding: 48px 0 54px;
  }

  .df-hero h1 {
    font-size: 36px;
  }

  .df-hero-lead,
  .df-hero p,
  .df-section p {
    font-size: 16px;
  }

  .df-hero-points {
    grid-template-columns: 1fr;
  }

  .df-section {
    padding: 56px 0;
  }

  .df-section h2,
  .df-summary-content h2,
  .df-science-text h2 {
    font-size: 31px;
  }

  .df-card,
  .df-benefits-box,
  .df-formula-card,
  .df-summary-card,
  .df-science-card {
    padding: 24px;
    border-radius: 20px;
  }

  .df-check-grid,
  .df-formula-grid,
  .df-highlight-grid,
  .df-science-points {
    grid-template-columns: 1fr;
  }

  .df-image-section {
    padding: 12px 0 46px;
  }

  .df-image-section img {
    height: 230px;
    border-radius: 18px;
  }

  .df-product-summary {
    padding: 56px 0;
  }

  .df-summary-image img {
    height: 240px;
    border-radius: 18px;
    object-position: 74% center;
  }

  .df-summary-content h3 {
    font-size: 22px;
  }

  .df-footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}