:root {
  color-scheme: light;
  --ink: #17201d;
  --muted: #66706c;
  --line: #d9dfdc;
  --surface: #ffffff;
  --page: #f4f6f5;
  --green: #167c5a;
  --green-dark: #0d5d42;
  --coral: #d94c4c;
  --coral-soft: #fff0ee;
  --shadow: 0 16px 40px rgba(22, 35, 30, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--page);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background: var(--page);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  padding: 0 5vw;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
}

.brand {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  color: var(--ink);
  font-size: 17px;
  font-weight: 750;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  grid-template-columns: repeat(3, 4px);
  align-items: end;
  gap: 3px;
  width: 24px;
  height: 24px;
  padding: 4px;
  border-radius: 5px;
  background: var(--ink);
}

.brand-mark span {
  display: block;
  border-radius: 1px;
  background: #fff;
}

.brand-mark span:nth-child(1) { height: 7px; }
.brand-mark span:nth-child(2) { height: 13px; }
.brand-mark span:nth-child(3) { height: 10px; }

.service-status,
.preview-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--green-dark);
  font-size: 13px;
  font-weight: 650;
}

.status-dot {
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  border-radius: 50%;
  background: #20a875;
  box-shadow: 0 0 0 3px rgba(32, 168, 117, 0.14);
}

main {
  width: min(1180px, 90vw);
  margin: 0 auto;
  padding: 56px 0 72px;
}

.intro {
  max-width: 680px;
  margin-bottom: 34px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--green-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.intro h1 {
  margin: 0;
  font-size: 36px;
  line-height: 1.2;
  letter-spacing: 0;
}

.intro > p:last-child {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.project-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.preview {
  position: relative;
  aspect-ratio: 16 / 8.6;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: #12161b;
}

.preview img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: top center;
  transition: transform 240ms ease;
}

.project-card:hover .preview img {
  transform: scale(1.015);
}

.preview-label {
  position: absolute;
  z-index: 1;
  top: 16px;
  right: 16px;
  min-height: 28px;
  padding: 5px 10px;
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: 4px;
  color: #f8fffc;
  background: rgba(13, 42, 32, 0.86);
  backdrop-filter: blur(8px);
}

.project-content {
  padding: 24px;
}

.project-heading {
  display: flex;
  gap: 14px;
  align-items: center;
}

.project-icon {
  display: grid;
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  place-items: center;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 850;
}

.project-icon--insight {
  color: #fff;
  background: var(--green-dark);
}

.project-icon--eye {
  color: #a52f2f;
  background: var(--coral-soft);
}

.project-heading h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.25;
}

.project-heading p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.tags li {
  padding: 5px 8px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: #4b5551;
  background: #f8faf9;
  font-size: 12px;
  font-weight: 650;
}

.description {
  min-height: 52px;
  margin: 18px 0 22px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.project-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 46px;
  padding: 0 16px;
  border: 1px solid var(--green-dark);
  border-radius: 6px;
  color: #fff;
  background: var(--green-dark);
  font-size: 14px;
  font-weight: 750;
  text-decoration: none;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.project-action:hover,
.project-action:focus-visible {
  border-color: var(--green);
  background: var(--green);
}

.project-action--eye {
  border-color: #b63d3d;
  background: #b63d3d;
}

.project-action--eye:hover,
.project-action--eye:focus-visible {
  border-color: var(--coral);
  background: var(--coral);
}

.project-action--eye:focus-visible {
  outline-color: rgba(217, 76, 76, 0.22);
}

.project-action:focus-visible {
  outline: 3px solid rgba(22, 124, 90, 0.22);
  outline-offset: 2px;
}

.project-action--disabled {
  justify-content: center;
  border-color: #d4d8d6;
  color: #858d89;
  background: #eef1ef;
  cursor: not-allowed;
}

.project-action--disabled:hover {
  border-color: #d4d8d6;
  background: #eef1ef;
}

footer {
  display: flex;
  justify-content: space-between;
  width: min(1180px, 90vw);
  margin: 0 auto;
  padding: 20px 0 30px;
  border-top: 1px solid var(--line);
  color: #7d8682;
  font-size: 12px;
}

@media (max-width: 760px) {
  .site-header {
    min-height: 60px;
    padding: 0 20px;
  }

  .service-status {
    font-size: 0;
  }

  main {
    width: min(100% - 32px, 560px);
    padding: 36px 0 50px;
  }

  .intro {
    margin-bottom: 24px;
  }

  .intro h1 {
    font-size: 29px;
  }

  .intro > p:last-child {
    font-size: 14px;
  }

  .project-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .project-content {
    padding: 20px;
  }

  .description {
    min-height: 0;
  }

  footer {
    width: min(100% - 32px, 560px);
  }

  footer span:last-child {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .preview img,
  .project-action {
    transition: none;
  }
}