/* Site 01 — classic sticky product landing: dark-green topbar, split hero, grids, table */
:root {
  --ink: #111111;
  --paper: #ffffff;
  --cream: #ece5dd;
  --forest: #075e54;
  --teal: #128c7e;
  --mint: #25d366;
  --line: #cfc6bb;
  --shadow: 0 10px 28px rgba(7, 94, 84, 0.12);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.7;
}

a { color: inherit; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--forest);
  color: var(--paper);
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.12);
}

.topbar-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand-mark {
  font-weight: 700;
  letter-spacing: 0.04em;
  font-size: 1.05rem;
}

.nav-line {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.nav-line a {
  text-decoration: none;
  color: var(--paper);
  font-size: 0.95rem;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

.nav-line a:hover,
.nav-line a:focus {
  border-bottom-color: var(--mint);
}

.hero-board {
  max-width: 1120px;
  margin: 0 auto;
  padding: 48px 22px 36px;
  display: flex;
  align-items: stretch;
  gap: 36px;
}

.hero-copy {
  flex: 1 1 48%;
}

.brand-chip {
  display: inline-block;
  background: var(--cream);
  color: var(--forest);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.hero-copy h1 {
  font-size: clamp(1.8rem, 3vw, 2.45rem);
  line-height: 1.25;
  color: var(--forest);
  margin-bottom: 16px;
}

.hero-copy > p {
  margin-bottom: 22px;
  font-size: 1.02rem;
}

.cta-btn {
  display: inline-block;
  background: var(--mint);
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  padding: 12px 22px;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.cta-btn:hover,
.cta-btn:focus {
  background: #1ebe5d;
}

.hero-mosaic {
  flex: 1 1 46%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.mosaic-cell {
  background: var(--forest);
  color: var(--paper);
  padding: 16px;
  border-radius: 12px;
  min-height: 148px;
}

.mosaic-cell:nth-child(2),
.mosaic-cell:nth-child(3) {
  background: var(--teal);
}

.mosaic-cell svg { display: block; margin-bottom: 8px; }

.mosaic-cell h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.mosaic-cell p { font-size: 0.88rem; color: #e8fff3; }

.band {
  max-width: 1120px;
  margin: 0 auto;
  padding: 42px 22px;
}

.band-cream {
  background: var(--cream);
  max-width: none;
  padding-left: calc(50vw - 560px);
  padding-right: calc(50vw - 560px);
}

@media (max-width: 1160px) {
  .band-cream {
    padding-left: 22px;
    padding-right: 22px;
  }
}

.band h2 {
  font-size: 1.55rem;
  color: var(--forest);
  margin-bottom: 12px;
}

.band > p { margin-bottom: 22px; max-width: 76ch; }

.trio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.trio-card {
  border: 1px solid var(--line);
  border-top: 4px solid var(--mint);
  background: var(--paper);
  padding: 18px 16px 20px;
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.trio-card h3,
.tile-unit h3,
.icon-cell h3,
.crypt-box h3,
.browse-cards h3,
.faq-card h3,
.step-node h3 {
  color: var(--teal);
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.tile-lane {
  display: flex;
  gap: 14px;
}

.tile-unit {
  flex: 1;
  background: var(--paper);
  padding: 18px;
  border-radius: 10px;
  border-left: 6px solid var(--forest);
}

.quad-icons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.icon-cell {
  text-align: left;
  background: #f7f3ee;
  padding: 16px;
  border-radius: 12px;
}

.icon-cell svg { color: var(--teal); margin-bottom: 8px; }

.step-horizon {
  list-style: none;
  display: flex;
  gap: 12px;
}

.step-node {
  flex: 1;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 16px 14px 18px;
  border-radius: 10px;
  position: relative;
}

.step-num {
  display: inline-flex;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  background: var(--forest);
  color: var(--paper);
  border-radius: 50%;
  font-weight: 700;
  margin-bottom: 8px;
}

.crypt-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.crypt-box {
  background: var(--forest);
  color: var(--paper);
  padding: 22px;
  border-radius: 12px;
}

.crypt-box h3 { color: var(--mint); }

.pill-row {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.pill {
  background: var(--teal);
  color: var(--paper);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.92rem;
}

.browse-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.browse-cards article {
  background: var(--paper);
  padding: 14px;
  border-radius: 10px;
  border: 1px dashed var(--teal);
}

.compare-sheet {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
  font-size: 0.92rem;
}

.compare-sheet caption {
  text-align: left;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--forest);
}

.compare-sheet th,
.compare-sheet td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  vertical-align: top;
}

.compare-sheet thead th {
  background: var(--forest);
  color: var(--paper);
}

.compare-sheet tbody tr:nth-child(even) { background: #f4faf8; }

.faq-stack { display: flex; flex-direction: column; gap: 12px; }

.faq-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px;
}

.page-end {
  background: var(--ink);
  color: #f3f3f3;
  padding: 28px 22px 36px;
  text-align: center;
}

.page-end p { margin: 6px 0; font-size: 0.92rem; }

@media (max-width: 900px) {
  .hero-board,
  .trio-grid,
  .tile-lane,
  .crypt-split {
    flex-direction: column;
    grid-template-columns: 1fr;
    display: flex;
  }
  .quad-icons,
  .browse-cards,
  .step-horizon {
    grid-template-columns: 1fr 1fr;
    flex-wrap: wrap;
    display: grid;
  }
  .topbar-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  .hero-mosaic,
  .quad-icons,
  .browse-cards,
  .step-horizon {
    grid-template-columns: 1fr;
  }
  .compare-sheet { display: block; overflow-x: auto; }
}

#news .news-list { list-style: none; max-width: 1120px; margin: 18px auto 0; display: grid; gap: 14px; }
#news .news-list li { background: #fff; border-left: 6px solid #25d366; padding: 16px 18px; box-shadow: var(--shadow); }
#news time { display: block; color: #128c7e; font-size: 0.82rem; font-weight: 700; margin-bottom: 6px; }
#news .news-list h3 { font-size: 1.05rem; margin-bottom: 6px; color: #075e54; }