:root {
  --blue: #2F9BD6;
  --blue-deep: #1A7AB5;
  --green: #5BAE4C;
  --yellow: #F2B705;
  --orange: #F0773A;
  --red: #E5483D;

  --ink: #1B1B1F;
  --muted: #6E6E76;
  --line: #ECEAE4;
  --bg: #FBFAF7;
  --surface: #FFFFFF;

  --grad: linear-gradient(90deg, #2F9BD6, #5BAE4C, #F2B705, #F0773A, #E5483D);

  --radius-sm: 12px;
  --radius: 20px;
  --radius-lg: 28px;
  --shadow-sm: 0 2px 8px rgba(27, 27, 31, 0.05);
  --shadow: 0 18px 40px -18px rgba(27, 27, 31, 0.18);
  --container: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Plus Jakarta Sans", -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue-deep); text-decoration: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-deep);
  margin-bottom: 16px;
}

/* ── Buttons ───────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 999px;
  font-size: 0.98rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color 0.18s ease;
}
.btn:hover { transform: translateY(-2px); text-decoration: none; }
.btn-primary {
  background: var(--ink);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { box-shadow: 0 14px 28px -12px rgba(27, 27, 31, 0.5); color: #fff; }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }
.btn-blue { background: var(--blue-deep); color: #fff; }
.btn-blue:hover { color: #fff; }
.btn-disabled {
  background: #EFEDE8;
  color: #A6A39B;
  cursor: not-allowed;
  border-color: transparent;
}
.btn-disabled:hover { transform: none; }

/* ── Header ───────────────────────────── */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 250, 247, 0.82);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background 0.25s ease;
}
header.scrolled { border-bottom-color: var(--line); background: rgba(251, 250, 247, 0.94); }
header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .brand-mark { height: 42px; display: block; }
.brand .brand-text { height: 22px; display: block; }
nav { display: flex; align-items: center; gap: 30px; }
.nav-links { display: flex; align-items: center; gap: 30px; }
nav a {
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 500;
  opacity: 0.85;
  transition: opacity 0.18s ease, color 0.18s ease;
}
nav a:hover { opacity: 1; color: var(--blue-deep); text-decoration: none; }
.lang-toggle {
  border: 1.5px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 7px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.18s ease, color 0.18s ease;
}
.lang-toggle:hover { border-color: var(--blue); color: var(--blue-deep); }

/* ── Hero ───────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  padding: 84px 0 96px;
}
.hero-blob {
  position: absolute;
  inset: -30% -10% auto auto;
  width: 720px;
  height: 720px;
  background:
    radial-gradient(closest-side, rgba(47, 155, 214, 0.30), transparent 70%),
    radial-gradient(closest-side, rgba(91, 174, 76, 0.22), transparent 70%);
  background-position: 30% 30%, 70% 60%;
  background-repeat: no-repeat;
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}
.hero-blob.two {
  inset: auto auto -40% -20%;
  width: 620px; height: 620px;
  background:
    radial-gradient(closest-side, rgba(240, 119, 58, 0.20), transparent 70%),
    radial-gradient(closest-side, rgba(242, 183, 5, 0.18), transparent 70%);
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
}
.hero h1 {
  font-size: clamp(2.6rem, 5.4vw, 4.1rem);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 22px;
}
.hero .lead {
  font-size: 1.18rem;
  color: var(--muted);
  max-width: 30em;
  margin: 0 0 34px;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-visual { display: flex; justify-content: center; align-items: center; position: relative; }
.hero-visual::before {
  content: "";
  position: absolute;
  width: 360px; height: 360px;
  border-radius: 50%;
  background: var(--grad);
  opacity: 0.16;
  filter: blur(46px);
}
.hero-visual img {
  position: relative;
  width: 100%;
  max-width: 420px;
  height: auto;
}

/* ── News ticker ───────────────────────────── */
.news-bar { background: transparent; }
.news-bar .container {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 56px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 10px 0 10px;
  max-width: var(--container);
  box-shadow: var(--shadow-sm);
}
.news-bar .container .news-inner { display: flex; align-items: center; gap: 16px; width: 100%; padding: 0 14px; }
.news-label {
  flex-shrink: 0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #fff;
  background: var(--orange);
  padding: 6px 14px;
  border-radius: 999px;
}
.news-viewport { flex: 1; height: 56px; overflow: hidden; position: relative; }
.news-track { position: absolute; width: 100%; animation: news-scroll 16s linear infinite; }
.news-track:hover { animation-play-state: paused; }
.news-track p {
  margin: 0;
  height: 56px;
  display: flex;
  align-items: center;
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news-track p .date {
  color: var(--blue-deep);
  font-weight: 600;
  margin-right: 12px;
  font-size: 0.85rem;
  flex-shrink: 0;
}
@keyframes news-scroll {
  0% { transform: translateY(0); }
  100% { transform: translateY(-50%); }
}

/* ── Sections ───────────────────────────── */
section { padding: 92px 0; }
.section-head { max-width: 640px; margin-bottom: 52px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}
.section-head p { font-size: 1.1rem; color: var(--muted); margin: 0; }
.section-alt { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-copy p { font-size: 1.12rem; color: #3C3C42; margin: 0 0 18px; }
.about-copy p:last-child { margin-bottom: 0; }
.about-card {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 44px;
  background: var(--bg);
  border: 1px solid var(--line);
  overflow: hidden;
}
.about-card::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 6px;
  background: var(--grad);
}
.about-card .quote { font-size: 1.5rem; font-weight: 700; line-height: 1.4; letter-spacing: -0.01em; margin: 0 0 16px; }
.about-card .sign { color: var(--muted); font-size: 0.98rem; }

/* Products */
.products-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 28px; }
.product-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 34px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
  overflow: hidden;
}
.product-card::before {
  content: "";
  position: absolute; left: 0; right: 0; top: 0;
  height: 5px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.product-card.accent-blue::before { background: var(--blue); }
.product-card.accent-amber::before { background: var(--orange); }
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.product-card:hover::before { transform: scaleX(1); }
.product-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 22px;
}
.product-icon svg { width: 26px; height: 26px; }
.accent-blue .product-icon { background: rgba(47, 155, 214, 0.12); color: var(--blue-deep); }
.accent-amber .product-icon { background: rgba(240, 119, 58, 0.12); color: var(--orange); }
.product-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.product-card h3 { margin: 0; font-size: 1.4rem; font-weight: 700; letter-spacing: -0.01em; }
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 4px 11px;
  border-radius: 999px;
}
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge-live { background: rgba(91, 174, 76, 0.14); color: #3F7D33; }
.badge-dev { background: rgba(242, 183, 5, 0.16); color: #9A7400; }
.product-card p { color: var(--muted); font-size: 1.02rem; margin: 0 0 26px; }
.product-link { font-weight: 600; font-size: 1rem; display: inline-flex; align-items: center; gap: 6px; }
.product-link:hover { text-decoration: none; gap: 10px; }
.product-link svg { width: 16px; height: 16px; transition: transform 0.2s ease; }

/* CTA band */
.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.cta-card {
  border-radius: var(--radius-lg);
  padding: 48px 44px;
  text-align: center;
  border: 1px solid var(--line);
}
.cta-card.contact { background: var(--ink); color: #fff; border-color: transparent; }
.cta-card.contact h3, .cta-card.donate h3 { font-size: 1.6rem; font-weight: 700; margin: 0 0 12px; letter-spacing: -0.01em; }
.cta-card.contact p { color: rgba(255, 255, 255, 0.72); }
.cta-card.donate { background: var(--surface); }
.cta-card.donate p { color: var(--muted); }
.cta-card p { font-size: 1.05rem; margin: 0 0 28px; }
.cta-card.contact .btn { background: #fff; color: var(--ink); }
.cta-card.contact .btn:hover { color: var(--ink); }

/* Footer */
footer {
  background: var(--bg);
  border-top: 1px solid var(--line);
  padding: 48px 0;
}
footer .container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 18px; }
.foot-brand { display: flex; align-items: center; gap: 11px; }
.foot-brand .brand-mark { height: 36px; }
.foot-brand .brand-text { height: 19px; }
.foot-meta { color: var(--muted); font-size: 0.9rem; text-align: right; }
.foot-meta a { color: var(--muted); }
.foot-meta a:hover { color: var(--blue-deep); }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ── Responsive ───────────────────────────── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 24px; }
  .hero-visual { display: none; }
  .hero { padding-top: 64px; }
  .hero-visual::before { width: 260px; height: 260px; }
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .cta-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .nav-links { display: none; }
  section { padding: 64px 0; }
  .hero { padding: 56px 0 64px; }
  .container { padding: 0 20px; }
  .about-card, .cta-card { padding: 32px 26px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .news-track { animation: none; }
  .btn:hover, .product-card:hover { transform: none; }
}