:root {
  --bg0: #061a14;
  --bg1: #0b3d2e;
  --bg2: #145c45;
  --accent: #c8f560;
  --accent-ink: #10240f;
  --text: #f3f7f2;
  --muted: #a8c0b4;
  --line: rgba(200, 245, 96, 0.18);
  --panel: rgba(8, 36, 28, 0.55);
  --danger: #ff8f7a;
  --ok: #7dffb3;
  --font-display: "Noto Serif SC", "Songti SC", serif;
  --font-ui: "Sora", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  color: var(--text);
  font-family: var(--font-ui);
  background: var(--bg0);
  min-height: 100dvh;
  overflow-x: hidden;
}

.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1200px 700px at 12% -10%, rgba(20, 92, 69, 0.85), transparent 60%),
    radial-gradient(900px 600px at 100% 10%, rgba(200, 245, 96, 0.12), transparent 55%),
    linear-gradient(165deg, #04140f 0%, #0b3d2e 42%, #082820 100%);
}
.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(243, 247, 242, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(243, 247, 242, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 20%, transparent 75%);
  opacity: 0.45;
}
.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  animation: drift 14s ease-in-out infinite alternate;
}
.bg-glow-a {
  width: 42vw; height: 42vw; max-width: 420px; max-height: 420px;
  left: -8%; top: 18%;
  background: rgba(200, 245, 96, 0.22);
}
.bg-glow-b {
  width: 50vw; height: 50vw; max-width: 520px; max-height: 520px;
  right: -12%; bottom: 5%;
  background: rgba(56, 168, 130, 0.28);
  animation-delay: -4s;
}
.bg-topo {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      -18deg,
      transparent 0 18px,
      rgba(168, 192, 180, 0.04) 18px 19px
    );
  opacity: 0.7;
  mix-blend-mode: soft-light;
}

@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(24px, -18px, 0) scale(1.08); }
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.25rem 0;
  max-width: 720px;
  margin: 0 auto;
  animation: rise 0.7s ease both;
}
.brand { display: flex; align-items: center; gap: 0.75rem; }
.brand-mark {
  width: 2.35rem; height: 2.35rem; border-radius: 0.7rem;
  background:
    linear-gradient(135deg, var(--accent), #5fd4a0 55%, #1b7a5c);
  box-shadow: 0 0 0 1px rgba(200, 245, 96, 0.35), 0 10px 30px rgba(0, 0, 0, 0.25);
  position: relative;
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 28% 30% 32% 30%;
  border: 2px solid rgba(16, 36, 15, 0.75);
  border-radius: 2px 8px 2px 8px;
  transform: rotate(-18deg);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.brand-text span {
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 0.15rem;
}
.top-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.78rem;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.top-link:hover { color: var(--accent); border-color: var(--accent); }

.hero {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.4rem 1.25rem 3rem;
  animation: rise 0.85s ease both;
  animation-delay: 0.08s;
}
.eyebrow {
  margin: 0 0 0.7rem;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}
h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 8vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: 0.01em;
}
.lede {
  margin: 1rem 0 0;
  max-width: 34rem;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.65;
}

.meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.75rem;
  padding: 1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
@media (min-width: 560px) {
  .meta { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
.meta-item { min-width: 0; }
.meta-label {
  display: block;
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.28rem;
}
.meta-value {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.meta-value.mono {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 500;
}

.desc {
  margin: 1rem 0 0;
  color: var(--text);
  opacity: 0.88;
  font-size: 0.95rem;
  line-height: 1.55;
}

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.8rem;
}
.btn-primary, .btn-ghost {
  appearance: none;
  border: 0;
  cursor: pointer;
  font-family: inherit;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.95rem 1.35rem;
  transition: transform 0.15s ease, box-shadow 0.2s ease, opacity 0.2s;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #9fdc4a);
  color: var(--accent-ink);
  box-shadow: 0 12px 32px rgba(200, 245, 96, 0.22);
  min-width: min(100%, 16rem);
}
.btn-primary:hover:not(:disabled) { transform: translateY(-1px); }
.btn-primary:active:not(:disabled) { transform: translateY(1px); }
.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}
.btn-primary.is-busy {
  background: linear-gradient(135deg, #d7f98a, #7ecf55);
}
.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid rgba(168, 192, 180, 0.35);
}
.btn-ghost:hover { color: var(--text); border-color: var(--text); }

.progress-wrap {
  margin-top: 1.35rem;
  padding: 1rem 1.05rem 1.1rem;
  background: rgba(4, 20, 15, 0.55);
  border: 1px solid var(--line);
}
.progress-head, .progress-foot {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.82rem;
  color: var(--muted);
}
.progress-head { margin-bottom: 0.55rem; }
.progress-foot { margin-top: 0.55rem; }
#progressPct { color: var(--accent); font-weight: 600; }
.progress-track {
  height: 0.55rem;
  background: rgba(243, 247, 242, 0.08);
  overflow: hidden;
  position: relative;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #5fd4a0, var(--accent));
  box-shadow: 0 0 18px rgba(200, 245, 96, 0.45);
  transition: width 0.12s linear;
}
.progress-fill.indeterminate {
  width: 35% !important;
  animation: slide 1.1s ease-in-out infinite;
}
@keyframes slide {
  0% { transform: translateX(-120%); }
  100% { transform: translateX(320%); }
}

.hint {
  margin: 1.4rem 0 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.55;
  max-width: 36rem;
}
.steps {
  margin: 1.5rem 0 0;
  padding: 0 0 0 1.15rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 34rem;
}
.steps strong { color: var(--text); font-weight: 600; }

.foot {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.25rem 1.6rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  color: rgba(168, 192, 180, 0.7);
  font-size: 0.75rem;
}
.health { color: rgba(168, 192, 180, 0.35); }
.health.ok { color: var(--ok); }
.health.bad { color: var(--danger); }

.hint.error { color: var(--danger); }
.hint.ok { color: var(--ok); }

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}