/* online: green brand bar + media tile mosaic */
:root {
  --bg: #ffffff;
  --bar: #128c7e;
  --tile: #dcfce7;
  --green: #25d366;
  --ink: #0f172a;
  --muted: #334155;
  --line: #bbf7d0;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Gill Sans", "Gill Sans MT", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
}

a {
  color: var(--bar);
}

.topbar {
  background: var(--bar);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.12rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.nav a {
  color: #ecfdf5;
  text-decoration: none;
  font-size: 0.9rem;
}

.nav a:hover,
.nav a:focus {
  text-decoration: underline;
}

.canvas {
  width: min(1080px, calc(100% - 36px));
  margin: 0 auto;
  padding: 28px 0 50px;
}

.hero {
  margin-bottom: 18px;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: 2rem;
  color: var(--bar);
}

.hero p {
  margin: 0 0 10px;
  color: var(--muted);
}

.tiles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 0 0 38px;
}

.tile {
  background: var(--tile);
  border: 1px solid var(--line);
  padding: 16px;
  min-height: 150px;
}

.tile h3 {
  margin: 10px 0 8px;
  color: #065f46;
}

.tile p {
  margin: 0;
  font-size: 0.95rem;
}

.mod {
  margin: 0 0 38px;
}

.mod h2 {
  margin: 0 0 12px;
  color: #115e59;
  font-size: 1.42rem;
}

.mod p {
  margin: 0 0 12px;
}

.compare {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  align-items: stretch;
}

.side {
  background: var(--tile);
  padding: 18px;
  border: 1px solid var(--line);
}

.side h3 {
  margin: 0 0 8px;
}

.versus {
  align-self: center;
  background: var(--green);
  color: #064e3b;
  font-weight: 700;
  padding: 8px 10px;
}

.degree {
  width: 100%;
  border-collapse: collapse;
}

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

.degree th {
  background: #ecfdf5;
  color: #065f46;
}

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

.flow li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 12px;
  margin: 0 0 12px;
  align-items: start;
}

.badge {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bar);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.saves {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.saves article {
  border: 1px solid var(--line);
  padding: 16px;
}

.saves h3 {
  margin: 8px 0;
}

.limits {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.limits article {
  background: #f0fdf4;
  padding: 18px;
  border: 1px solid var(--line);
}

.scenes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.scenes article {
  border-left: 4px solid var(--green);
  padding: 4px 0 4px 14px;
}

.faq article {
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
}

.faq h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.faq p {
  margin: 0;
}

.foot {
  background: var(--bar);
  color: #ecfdf5;
  padding: 26px 24px;
}

.foot p {
  margin: 0 0 8px;
}

@media (max-width: 900px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .tiles,
  .saves,
  .limits,
  .scenes {
    grid-template-columns: 1fr 1fr;
  }

  .compare {
    grid-template-columns: 1fr;
  }

  .versus {
    justify-self: start;
  }
}

@media (max-width: 560px) {
  .tiles,
  .saves,
  .limits,
  .scenes {
    grid-template-columns: 1fr;
  }
}