:root {
  --bg: #f1eadb;
  --ink: #080b09;
  --muted: #59625d;
  --line: rgba(8, 11, 9, .15);
  --panel: #fffaf0;
  --green: #042d27;
  --green-soft: #dfe9e1;
  --gold: #d0ad65;
  --accent: #6d744f;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 18px;
  line-height: 1.58;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 78% 10%, rgba(208, 173, 101, .2), transparent 25rem),
    radial-gradient(circle at 8% 72%, rgba(4, 45, 39, .08), transparent 28rem);
  background-size: auto;
}
a { color: inherit; }
.header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 22px;
  padding: 18px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
  background: rgba(241, 234, 219, .9);
  backdrop-filter: blur(18px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 24px;
  font-weight: 950;
}
.brand::before {
  content: "";
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 20px 0 0 var(--gold);
}
.header nav { display: flex; flex-wrap: wrap; gap: 8px; }
.header nav a {
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 250, 240, .58);
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 850;
}
main {
  position: relative;
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
}
.hero, .section {
  padding: clamp(58px, 7vw, 96px) 0;
  border-bottom: 1px solid var(--line);
}
.hero {
  min-height: calc(100vh - 76px);
  display: grid;
  align-content: center;
}
.tag {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 860px;
  margin-bottom: 24px;
  font-size: clamp(40px, 5.2vw, 66px);
  line-height: 1.04;
  letter-spacing: 0;
}
h2 {
  max-width: 820px;
  margin-bottom: 22px;
  font-size: clamp(30px, 3.2vw, 46px);
  line-height: 1.1;
  letter-spacing: 0;
}
.lead, .text-section p {
  max-width: 800px;
  color: var(--muted);
  font-size: clamp(20px, 1.7vw, 25px);
  line-height: 1.45;
}
.hero-system {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 930px;
  margin: 32px 0 0;
}
.hero-system div {
  min-height: 154px;
  padding: 22px;
  border: 1px solid rgba(4, 45, 39, .18);
  border-radius: 20px;
  background: rgba(255, 250, 240, .72);
  box-shadow: 0 18px 48px rgba(8, 11, 9, .07);
}
.hero-system span {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 30px;
  margin-bottom: 18px;
  border-radius: 999px;
  background: var(--green);
  color: var(--gold);
  font-size: 14px;
  font-weight: 950;
}
.hero-system b {
  display: block;
  margin-bottom: 6px;
  font-size: 22px;
  line-height: 1.08;
}
.hero-system p {
  margin: 0;
  color: var(--muted);
  line-height: 1.35;
}
.hero-box {
  max-width: 860px;
  margin-top: 34px;
  padding: clamp(24px, 4vw, 36px);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(135deg, var(--panel), #efe4cf);
  box-shadow: 0 28px 70px rgba(8, 11, 9, .12);
}
.hero-box p {
  color: #26302b;
  font-size: clamp(19px, 1.7vw, 24px);
  font-weight: 850;
}
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 56px;
  padding: 14px 22px;
  border: 1px solid var(--green);
  border-radius: 999px;
  background: var(--green);
  color: var(--panel);
  text-decoration: none;
  font-weight: 950;
}
.button.full { width: 100%; }
.contrast, .author, .cards {
  display: grid;
  gap: 16px;
}
.contrast { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.visual-proof h2 { max-width: 760px; }
.visual-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 30px;
}
.visual-grid figure {
  margin: 0;
  border: 1px solid rgba(4, 45, 39, .18);
  border-radius: 22px;
  overflow: hidden;
  background: #071613;
  box-shadow: 0 24px 70px rgba(8, 11, 9, .13);
}
.visual-grid img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
.visual-grid figcaption {
  min-height: 76px;
  padding: 18px 20px;
  border-top: 1px solid rgba(8, 11, 9, .12);
  background: var(--panel);
  color: var(--ink);
  font-weight: 850;
  line-height: 1.28;
}
.bad, .good, .method, .cards article, details, .price {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 250, 240, .75);
  box-shadow: 0 18px 50px rgba(8, 11, 9, .06);
}
.bad, .good, .method, .cards article, .price { padding: clamp(24px, 3vw, 34px); }
.good {
  background: var(--green);
  color: var(--panel);
}
.bad ul, .good ul, .first {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}
.bad li, .good li, .first li {
  padding: 13px 15px;
  border-radius: 14px;
  background: var(--green-soft);
  font-weight: 800;
}
.good li {
  background: rgba(255, 250, 240, .1);
  color: #edf4ef;
}
.steps {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
  margin: 30px 0;
}
.steps span {
  min-height: 66px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: var(--green-soft);
  color: var(--green);
  font-weight: 950;
}
.steps span:last-child {
  background: var(--green);
  color: var(--panel);
}
.dark-visual {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(360px, 1fr);
  gap: clamp(24px, 5vw, 60px);
  align-items: center;
  margin: 70px 0;
  padding: clamp(34px, 5vw, 58px);
  border: 1px solid rgba(255, 250, 240, .22);
  border-radius: 28px;
  background:
    radial-gradient(circle at 76% 28%, rgba(208, 173, 101, .24), transparent 24rem),
    #071613;
  color: var(--panel);
  box-shadow: 0 34px 90px rgba(8, 11, 9, .22);
}
.dark-visual .tag { color: var(--gold); }
.dark-visual h2 {
  color: var(--panel);
  font-size: clamp(31px, 3.3vw, 48px);
}
.dark-visual p:not(.tag) {
  color: #cfd8d3;
  font-size: clamp(19px, 1.5vw, 23px);
}
.dark-visual img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid rgba(255, 250, 240, .18);
  border-radius: 22px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, .28);
}
.method p, .cards p, .author p:not(.tag), details p { color: var(--muted); }
.author {
  grid-template-columns: 240px minmax(0, 1fr);
  align-items: center;
}
.author img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  border-radius: 18px;
  filter: grayscale(1) contrast(1.08);
  box-shadow: 0 24px 60px rgba(8, 11, 9, .14);
}
.cards { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.cards article {
  min-height: 220px;
  overflow: hidden;
}
.cards b, summary {
  display: block;
  margin-bottom: 10px;
  font-size: clamp(20px, 1.7vw, 23px);
  line-height: 1.14;
  font-weight: 950;
}
.first {
  max-width: 880px;
  counter-reset: item;
}
.first li {
  display: grid;
  grid-template-columns: 54px 1fr;
  align-items: center;
  min-height: 64px;
  padding: 0 15px 0 0;
  overflow: hidden;
  background: rgba(255, 250, 240, .78);
}
.first li::before {
  counter-increment: item;
  content: counter(item);
  display: grid;
  place-items: center;
  align-self: stretch;
  margin-right: 15px;
  background: var(--green);
  color: var(--panel);
}
.result-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}
.result-grid article {
  min-height: 230px;
  padding: 26px;
  border: 1px solid rgba(4, 45, 39, .16);
  border-radius: 22px;
  background: linear-gradient(145deg, rgba(255, 250, 240, .82), rgba(223, 233, 225, .58));
  box-shadow: 0 20px 55px rgba(8, 11, 9, .07);
}
.result-grid span {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 32px;
  margin-bottom: 22px;
  border-radius: 999px;
  background: var(--green);
  color: var(--gold);
  font-size: 14px;
  font-weight: 950;
}
.result-grid b {
  display: block;
  margin-bottom: 10px;
  font-size: clamp(22px, 2vw, 28px);
  line-height: 1.08;
}
.result-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.42;
}
details {
  max-width: 900px;
  margin-bottom: 12px;
  overflow: hidden;
}
summary {
  cursor: pointer;
  padding: 20px 22px;
}
details p {
  margin: 0;
  padding: 0 22px 22px;
}
.price {
  max-width: 1040px;
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(340px, 1fr);
  gap: 28px 42px;
  align-items: start;
  background: var(--green);
  color: var(--panel);
}
.price .tag,
.price h2,
.price > p,
.price .button,
.price small {
  grid-column: 1;
}
.price h2 {
  color: var(--panel);
  font-size: clamp(42px, 4.2vw, 62px);
}
.price p { color: #dbe4df; }
.price-includes {
  grid-column: 2;
  grid-row: 1 / span 5;
  display: grid;
  gap: 12px;
}
.price-includes article {
  padding: 18px 20px;
  border: 1px solid rgba(255, 250, 240, .18);
  border-radius: 16px;
  background: rgba(255, 250, 240, .08);
}
.price-includes b {
  display: block;
  margin-bottom: 6px;
  color: var(--gold);
  font-size: 18px;
  line-height: 1.16;
}
.price-includes span {
  display: block;
  color: #dbe4df;
  line-height: 1.38;
}
.price-note {
  padding-top: 8px;
  font-weight: 800;
}
.price .button {
  margin-top: 22px;
  border-color: var(--gold);
  background: var(--gold);
  color: var(--ink);
}
.price small {
  display: block;
  margin-top: 12px;
  color: #bac8c1;
}
@media(max-width: 900px) {
  .header { align-items: flex-start; flex-direction: column; }
  .contrast, .author, .cards { grid-template-columns: 1fr; }
  .visual-grid { grid-template-columns: 1fr; }
  .result-grid { grid-template-columns: 1fr; }
  .hero-system, .dark-visual { grid-template-columns: 1fr; }
  .price { grid-template-columns: 1fr; }
  .price .tag,
  .price h2,
  .price > p,
  .price .button,
  .price small,
  .price-includes {
    grid-column: 1;
  }
  .price-includes {
    grid-row: auto;
  }
  .author img { max-width: 260px; }
  .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media(max-width: 580px) {
  main { width: min(100% - 28px, 1120px); }
  h1 { font-size: clamp(36px, 10vw, 50px); }
  h2 { font-size: clamp(28px, 7.6vw, 38px); }
  .steps { grid-template-columns: 1fr; }
}