:root {
  color-scheme: light;
  --bg: #f6f7f4;
  --paper: #ffffff;
  --ink: #16201b;
  --muted: #65716b;
  --line: #dde5e0;
  --accent: #0f8f66;
  --accent-dark: #087453;
  --gold: #b97812;
  --blue: #2d6fa7;
  --rose: #b64c64;
  --shadow: 0 22px 70px rgba(22, 32, 27, 0.1);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

.site-hero {
  min-height: 92vh;
  background:
    linear-gradient(120deg, rgba(15, 143, 102, 0.14), transparent 36%),
    linear-gradient(245deg, rgba(45, 111, 167, 0.14), transparent 44%),
    #ffffff;
  border-bottom: 1px solid var(--line);
}

.site-nav,
.hero-layout,
.section,
.cta-section {
  width: min(1160px, calc(100vw - 32px));
  margin: 0 auto;
}

.site-nav {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 800;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: var(--ink);
  color: #ffffff;
  font-size: 13px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 720;
}

.nav-cta {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 12px;
  color: var(--ink);
  background: #ffffff;
}

.hero-layout {
  min-height: calc(92vh - 74px);
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(460px, 1.1fr);
  gap: 48px;
  align-items: center;
  padding: 40px 0 72px;
}

.eyebrow {
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 820;
  text-transform: uppercase;
}

.hero-copy h1,
.section-title h2,
.admin-value-card h2,
.cta-section h2 {
  margin: 0;
  line-height: 1.02;
  font-weight: 840;
  letter-spacing: 0;
}

.hero-copy h1 {
  margin-top: 12px;
  max-width: 760px;
  font-size: clamp(42px, 6.5vw, 76px);
}

.hero-copy p {
  max-width: 640px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.55;
}

.hero-actions {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-note {
  max-width: 600px;
  margin-top: 16px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.primary-link,
.secondary-link {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  padding: 0 18px;
  font-size: 15px;
  font-weight: 780;
}

.primary-link {
  background: var(--accent);
  color: #ffffff;
}

.secondary-link {
  border: 1px solid var(--line);
  background: #ffffff;
}

.hero-product {
  position: relative;
  min-height: 580px;
}

.product-phone {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(390px, 82vw);
  transform: translate(-50%, -50%);
  padding: 14px;
  border: 1px solid rgba(22, 32, 27, 0.16);
  border-radius: 30px;
  background: #222b27;
  box-shadow: var(--shadow);
}

.phone-bar {
  width: 82px;
  height: 5px;
  margin: 0 auto 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.34);
}

.auction-message {
  overflow: hidden;
  border-radius: 18px;
  background: var(--paper);
}

.lot-photo {
  height: 190px;
  display: grid;
  place-items: center;
  background:
    linear-gradient(135deg, rgba(15, 143, 102, 0.14), rgba(45, 111, 167, 0.14)),
    #eef3ef;
}

.coin-visual {
  width: 126px;
  height: 126px;
  border: 12px solid #a87931;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 28%, rgba(255, 255, 255, 0.72), transparent 18%),
    radial-gradient(circle, #ecd486 0 48%, #bf8a33 49% 65%, #7d5a26 66%);
  box-shadow: 0 22px 46px rgba(126, 90, 38, 0.34);
}

.message-body {
  padding: 16px;
}

.status {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  border-radius: 999px;
  padding: 0 10px;
  background: rgba(15, 143, 102, 0.1);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 800;
}

.auction-message h2 {
  margin: 11px 0 7px;
  font-size: 22px;
  line-height: 1.2;
}

.auction-message p {
  margin: 0;
  color: var(--muted);
}

.auction-message dl {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 14px 0 0;
}

.auction-message dl div {
  padding: 9px;
  border-radius: var(--radius);
  background: #f3f6f4;
}

.auction-message dt {
  color: var(--muted);
  font-size: 11px;
}

.auction-message dd {
  margin: 4px 0 0;
  font-size: 13px;
  font-weight: 800;
}

.message-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 0 16px 16px;
}

.message-buttons button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  color: var(--ink);
  font-size: 14px;
  font-weight: 760;
}

.message-buttons button:first-child {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

.floating-panel {
  position: absolute;
  width: 210px;
  padding: 14px;
  border: 1px solid rgba(221, 229, 224, 0.9);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 14px 42px rgba(22, 32, 27, 0.1);
  backdrop-filter: blur(14px);
}

.floating-panel span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.floating-panel strong {
  display: block;
  margin-top: 7px;
  font-size: 15px;
  line-height: 1.3;
}

.seller-panel {
  left: 10px;
  top: 76px;
}

.admin-panel {
  right: 0;
  bottom: 96px;
}

.section {
  padding: 0 0 78px;
}

main > .section:first-child {
  padding-top: 78px;
}

.section-title {
  max-width: 800px;
}

.section-title h2,
.admin-value-card h2,
.cta-section h2 {
  margin-top: 10px;
  font-size: clamp(30px, 5vw, 50px);
}

.section-title p,
.admin-value-card p,
.cta-section p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
}

.flow-grid,
.feature-board,
.mode-grid,
.tariff-grid,
.commands-grid {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.flow-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-board,
.mode-grid,
.tariff-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.commands-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.flow-grid article,
.feature-board article,
.mode-grid article,
.tariff-grid article,
.commands-grid article,
.admin-value-card,
.cta-section {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.flow-grid article,
.feature-board article,
.mode-grid article,
.tariff-grid article,
.commands-grid article {
  padding: 20px;
}

.step,
.mode-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  border-radius: 999px;
  padding: 0 12px;
  background: rgba(15, 143, 102, 0.1);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 820;
}

.step {
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: 50%;
  background: var(--accent);
  color: #ffffff;
}

.mode-badge.pro {
  background: rgba(185, 120, 18, 0.12);
  color: var(--gold);
}

.flow-grid h3,
.feature-board h3,
.mode-grid h3,
.tariff-grid h3 {
  margin: 16px 0 0;
  font-size: 20px;
  line-height: 1.25;
}

.flow-grid p,
.feature-board p,
.mode-grid p,
.tariff-grid p {
  margin: 9px 0 0;
  color: var(--muted);
  line-height: 1.5;
}

.tariff-grid article {
  display: grid;
  align-content: start;
  gap: 10px;
  min-height: 230px;
}

.tariff-grid article.highlight {
  border-color: rgba(185, 120, 18, 0.34);
  background:
    linear-gradient(180deg, rgba(185, 120, 18, 0.08), rgba(255, 255, 255, 0) 44%),
    var(--paper);
}

.tariff-grid h3,
.tariff-grid p {
  margin: 0;
}

.tariff-grid strong {
  margin-top: 4px;
  font-size: 24px;
  line-height: 1.1;
}

.tariff-grid small {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
}

.tariff-explain {
  display: grid;
  gap: 6px;
  margin-top: 14px;
  padding: 14px 16px;
  border: 1px solid rgba(15, 143, 102, 0.24);
  border-radius: var(--radius);
  background: rgba(15, 143, 102, 0.07);
}

.tariff-explain strong {
  font-size: 15px;
}

.tariff-explain span,
.tariff-note {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.tariff-note {
  margin: 12px 0 0;
}

.commands-grid article {
  display: grid;
  gap: 9px;
}

.commands-grid article.primary-command {
  border-color: rgba(15, 143, 102, 0.32);
  background: rgba(15, 143, 102, 0.08);
}

.commands-grid article.primary-command code {
  color: var(--accent-dark);
}

.commands-grid article.primary-command span {
  color: var(--ink);
}

.commands-grid code {
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
}

.commands-grid span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.view-tabs {
  width: fit-content;
  max-width: 100%;
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-top: 26px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.view-tabs button {
  min-height: 44px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  padding: 0 16px;
  font-size: 14px;
  font-weight: 780;
  white-space: nowrap;
}

.view-tabs button.active {
  background: var(--ink);
  color: #ffffff;
}

.view-panel {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.view-layout {
  display: grid;
  grid-template-columns: minmax(310px, 0.9fr) minmax(0, 1.1fr);
  gap: 28px;
  align-items: center;
  padding: 26px;
}

.miniapp-preview,
.admin-preview {
  display: grid;
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f7f9f6;
}

.preview-top,
.admin-mode-line {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.preview-top span,
.locked-preview span,
.miniapp-preview label span,
.admin-mode-line span,
.admin-settings-grid span,
.moderation-preview span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.preview-top strong {
  font-size: 20px;
}

.preview-top a {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  color: var(--ink);
  padding: 0 10px;
  font-size: 13px;
  font-weight: 800;
}

.save-preview {
  width: fit-content;
  border-radius: 999px;
  background: rgba(185, 120, 18, 0.1);
  color: var(--gold);
  padding: 6px 9px;
  font-size: 12px;
  font-weight: 800;
}

.locked-preview,
.admin-mode-line,
.locked-settings-preview {
  padding: 12px;
  border: 1px solid rgba(15, 143, 102, 0.24);
  border-radius: var(--radius);
  background: rgba(15, 143, 102, 0.07);
}

.locked-settings-preview {
  border-color: var(--line);
  background: #edf2ee;
}

.locked-preview strong,
.admin-mode-line strong,
.locked-settings-preview strong,
.miniapp-preview label strong,
.admin-settings-grid strong,
.moderation-preview strong {
  display: block;
  margin-top: 5px;
  font-size: 15px;
  line-height: 1.3;
}

.miniapp-preview label {
  display: grid;
  gap: 5px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.input-row,
.admin-settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.moderation-preview .admin-settings-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.admin-preview-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.admin-preview-tabs span {
  min-height: 34px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.admin-preview-tabs span.active {
  background: var(--ink);
  color: #ffffff;
}

.miniapp-preview button,
.moderation-preview button {
  min-height: 42px;
  border: 0;
  border-radius: var(--radius);
  background: var(--accent);
  color: #ffffff;
  font-size: 14px;
  font-weight: 800;
}

.view-copy h3 {
  margin: 0;
  font-size: 28px;
  line-height: 1.15;
}

.view-copy p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
}

.view-copy ul {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.view-copy li {
  position: relative;
  padding-left: 24px;
  color: var(--ink);
  line-height: 1.45;
}

.view-copy li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
}

.permission-note {
  display: grid;
  gap: 6px;
  margin-top: 18px;
  padding: 14px;
  border: 1px solid rgba(15, 143, 102, 0.22);
  border-radius: var(--radius);
  background: rgba(15, 143, 102, 0.07);
}

.permission-note strong {
  font-size: 15px;
}

.permission-note span,
.cta-note {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.admin-settings-grid div {
  padding: 11px;
  border-radius: var(--radius);
  background: #ffffff;
}

.moderation-preview {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid rgba(185, 120, 18, 0.28);
  border-radius: var(--radius);
  background: #fffaf0;
}

.moderation-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.moderation-head span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.moderation-preview > div:last-child {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.moderation-preview button:last-child {
  border: 1px solid var(--line);
  background: #ffffff;
  color: #9b2f41;
}

.feature-board article:first-child {
  grid-column: span 2;
}

.admin-value-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 28px;
  align-items: center;
  padding: 28px;
}

.admin-benefits {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.admin-benefits div {
  padding: 14px;
  border-radius: var(--radius);
  background: #f3f6f4;
}

.admin-benefits span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 780;
  text-transform: uppercase;
}

.admin-benefits strong {
  display: block;
  margin-top: 5px;
  font-size: 23px;
}

.cta-section {
  margin-bottom: 72px;
  padding: 34px;
  text-align: center;
}

.cta-section .primary-link {
  margin-top: 22px;
}

.cta-section .cta-note {
  max-width: 620px;
  margin: 10px auto 0;
}

.policy-link {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.policy-link a {
  color: var(--muted);
  font-weight: 800;
}

@media (max-width: 980px) {
  .hero-layout,
  .admin-value-card {
    grid-template-columns: 1fr;
  }

  .hero-product {
    min-height: 560px;
  }

  .flow-grid,
  .feature-board,
  .mode-grid,
  .tariff-grid,
  .commands-grid,
  .view-layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-board article:first-child {
    grid-column: span 1;
  }
}

@media (max-width: 680px) {
  .site-nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  .nav-actions {
    width: 100%;
    flex-wrap: wrap;
  }

  .hero-layout {
    padding-top: 44px;
    padding-bottom: 54px;
  }

  .section {
    padding-top: 0;
    padding-bottom: 54px;
  }

  main > .section:first-child {
    padding-top: 54px;
  }

  .hero-copy h1 {
    font-size: 35px;
  }

  .hero-copy p {
    font-size: 16px;
  }

  .hero-actions,
  .primary-link,
  .secondary-link {
    width: 100%;
  }

  .hero-product {
    min-height: 680px;
  }

  .product-phone {
    top: 48%;
    width: min(350px, 94vw);
  }

  .floating-panel {
    left: 50%;
    right: auto;
    width: min(300px, 88vw);
    transform: translateX(-50%);
  }

  .seller-panel {
    top: 0;
  }

  .admin-panel {
    bottom: 0;
  }

  .flow-grid,
  .feature-board,
  .mode-grid,
  .tariff-grid,
  .commands-grid,
  .view-layout {
    grid-template-columns: 1fr;
  }

  .view-tabs {
    width: 100%;
  }

  .view-tabs button {
    white-space: normal;
  }

  .admin-value-card,
  .cta-section,
  .view-layout {
    padding: 20px;
  }
}