@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* ─── Variables ─────────────────────────────────────────────────────────── */
:root {
  --bg:          #ffffff;
  --bg-sec:      #f8fafc;
  --bg-card:     #ffffff;
  --bg-hover:    #f1f5f9;
  --border:      #e2e8f0;
  --border-md:   #cbd5e1;
  --orange:      #f97316;
  --orange-dim:  #ea580c;
  --orange-light:#fff7ed;
  --blue:        #3b82f6;
  --blue-light:  #eff6ff;
  --purple:      #8b5cf6;
  --red:         #ef4444;
  --yellow:      #f59e0b;
  --green-acc:   #10b981;
  --green:       #f97316;
  --text:        #0f172a;
  --muted:       #64748b;
  --muted-dim:   #94a3b8;
  --mono:        'JetBrains Mono', 'Fira Code', Consolas, monospace;
  --sans:        'Inter', system-ui, -apple-system, sans-serif;
  --radius:      8px;
  --shadow-card: 0 4px 24px rgba(0,0,0,.07);
  --shadow-lg:   0 12px 40px rgba(0,0,0,.10);
}

/* ─── Reset ─────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
img, svg { display: block; max-width: 100%; }
a { color: var(--orange); text-decoration: none; }
a:hover { color: var(--orange-dim); }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
ul { list-style: none; }

/* ─── Base ───────────────────────────────────────────────────────────────── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ─── Typography ─────────────────────────────────────────────────────────── */
h1,h2,h3,h4,h5,h6 { font-family: var(--sans); line-height: 1.2; font-weight: 700; }
code, .mono { font-family: var(--mono); }
.text-orange { color: var(--orange);   }
.text-blue   { color: var(--blue);     }
.text-purple { color: var(--purple);   }
.text-yellow { color: var(--yellow);   }
.text-red    { color: var(--red);      }
.text-muted  { color: var(--muted);    }
.text-green  { color: var(--green-acc);}

/* ─── Layout ─────────────────────────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 22px; border-radius: var(--radius);
  font-family: var(--sans); font-size: .9rem; font-weight: 600;
  transition: all .2s; white-space: nowrap; cursor: pointer;
}
.btn-primary {
  background: var(--orange); color: #fff; font-weight: 700;
  box-shadow: 0 2px 12px rgba(249,115,22,.3);
}
.btn-primary:hover {
  background: var(--orange-dim); color: #fff;
  box-shadow: 0 4px 20px rgba(249,115,22,.45);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent; color: var(--orange);
  border: 1.5px solid var(--orange);
}
.btn-outline:hover {
  background: var(--orange-light); color: var(--orange-dim);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent; color: var(--muted);
  border: 1.5px solid var(--border-md);
}
.btn-ghost:hover { color: var(--text); border-color: var(--muted-dim); background: var(--bg-hover); }

/* ─── Navigation ─────────────────────────────────────────────────────────── */
#nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 8px rgba(0,0,0,.06);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; max-width: 1200px; margin: 0 auto; padding: 0 24px;
}
.nav-logo {
  font-family: var(--sans); font-weight: 800; font-size: 1.15rem;
  color: var(--text); display: flex; align-items: center; gap: 6px;
  white-space: nowrap;
}
.nav-logo .prompt { color: var(--orange); }
.nav-logo .cursor {
  display: inline-block; width: 3px; height: 1em;
  background: var(--orange); vertical-align: middle;
  animation: blink 1.1s step-end infinite;
}
.nav-links {
  display: flex; align-items: center; gap: 2px;
}
.nav-links a {
  display: block; padding: 7px 12px;
  font-family: var(--sans); font-size: .85rem; font-weight: 500; color: var(--muted);
  border-radius: 6px; transition: color .2s, background .2s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--orange); background: var(--orange-light);
}
.nav-right {
  display: flex; align-items: center; gap: 10px;
}
.lang-group {
  display: flex; border: 1.5px solid var(--border-md); border-radius: var(--radius); overflow: hidden;
}
.lang-btn {
  padding: 5px 12px;
  font-family: var(--mono); font-size: .78rem; color: var(--muted);
  background: transparent; transition: all .2s;
}
.lang-btn:hover { color: var(--text); background: var(--bg-hover); }
.lang-btn.active { color: var(--orange); background: var(--orange-light); font-weight: 600; }
.nav-dl-btn {
  padding: 8px 16px; font-family: var(--sans); font-size: .85rem; font-weight: 600;
  color: #fff; background: var(--orange);
  border-radius: var(--radius); transition: all .2s;
  box-shadow: 0 2px 8px rgba(249,115,22,.25);
}
.nav-dl-btn:hover {
  background: var(--orange-dim); color: #fff;
  box-shadow: 0 4px 16px rgba(249,115,22,.4);
  transform: translateY(-1px);
}
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px; padding: 8px;
}
.nav-hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--muted); transition: all .2s;
}

/* ─── Hero ───────────────────────────────────────────────────────────────── */
#hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  padding-top: 64px; overflow: hidden;
  background: linear-gradient(135deg, #fff7ed 0%, #ffffff 50%, #eff6ff 100%);
}
#matrix-canvas {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%; opacity: .04;
  filter: hue-rotate(30deg);
}
.hero-grid-overlay {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%; opacity: .5;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-content {
  position: relative; z-index: 2;
  max-width: 1200px; margin: 0 auto; padding: 60px 24px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--orange-light); border: 1px solid rgba(249,115,22,.3);
  border-radius: 999px; padding: 6px 16px;
  font-family: var(--mono); font-size: .75rem; color: var(--orange);
  margin-bottom: 28px; font-weight: 600;
}
.hero-badge .live-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--orange); animation: pulse-dot 2s infinite;
}
.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800; margin-bottom: 20px; line-height: 1.1;
  color: var(--text);
}
.hero-title .line2 { display: block; color: var(--orange); }
.hero-sub {
  color: var(--muted); font-size: 1rem; line-height: 1.85;
  margin-bottom: 32px; max-width: 540px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Terminal card */
.hero-terminal {
  background: #1e293b; border: 1px solid #334155;
  border-radius: 12px; overflow: hidden;
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(249,115,22,.08);
}
.term-bar {
  background: #273345; border-bottom: 1px solid #334155;
  padding: 10px 16px; display: flex; align-items: center; gap: 8px;
}
.term-dot { width: 11px; height: 11px; border-radius: 50%; }
.term-dot.r { background: #ff5f57; }
.term-dot.y { background: #febc2e; }
.term-dot.g { background: #28c840; }
.term-title {
  margin: 0 auto;
  font-family: var(--mono); font-size: .75rem; color: #64748b;
}
.term-body {
  padding: 20px 22px;
  font-family: var(--mono); font-size: .82rem; line-height: 2;
  color: #e2e8f0;
}
.tl { display: block; }
.tl .p { color: #fb923c; }
.tl .k { color: #60a5fa; }
.tl .s { color: #fbbf24; }
.tl .c { color: #475569; }
.tl .v { color: #a78bfa; }
.tl .o { color: #e2e8f0; }
.term-cursor {
  display: inline-block; width: 8px; height: .9em;
  background: var(--orange); vertical-align: middle;
  animation: blink 1.1s step-end infinite;
}

/* ─── Stats ──────────────────────────────────────────────────────────────── */
#stats {
  padding: 70px 0;
  background: var(--orange);
  border-top: 1px solid rgba(249,115,22,.2);
  border-bottom: 1px solid rgba(249,115,22,.2);
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 40px; text-align: center;
}
.stat-num {
  font-family: var(--mono); font-size: 2.8rem; font-weight: 700;
  color: #fff; line-height: 1; margin-bottom: 8px;
  letter-spacing: -1px;
}
.stat-label { font-family: var(--sans); font-size: .85rem; color: rgba(255,255,255,.85); font-weight: 500; }

/* ─── Section base ───────────────────────────────────────────────────────── */
.section { padding: 100px 0; }
.section-alt { background: var(--bg-sec); }
.section-tag {
  font-family: var(--mono); font-size: .72rem;
  color: var(--orange); letter-spacing: 2px; text-transform: uppercase;
  margin-bottom: 12px; font-weight: 600;
}
.section-tag::before { content: '▸ '; opacity: .7; }
.section-title {
  font-size: clamp(1.7rem, 3.5vw, 2.5rem); font-weight: 800;
  margin-bottom: 14px; color: var(--text);
}
.section-desc {
  color: var(--muted); font-size: .97rem; line-height: 1.85;
  max-width: 580px;
}

/* ─── Cards ──────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card); border: 1.5px solid var(--border);
  border-radius: 12px; padding: 28px;
  transition: border-color .25s, transform .25s, box-shadow .25s;
  position: relative; overflow: hidden;
}
.card::after {
  content: ''; position: absolute; inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--yellow));
  opacity: 0; transition: opacity .3s;
  border-radius: 12px 12px 0 0;
}
.card:hover {
  border-color: rgba(249,115,22,.35);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.card:hover::after { opacity: 1; }

.card-badge {
  display: inline-block; padding: 3px 10px;
  font-family: var(--mono); font-size: .68rem;
  border-radius: 999px; margin-bottom: 16px;
  border: 1px solid; font-weight: 600;
}
.badge-green  { color: var(--green-acc); border-color: rgba(16,185,129,.35); background: rgba(16,185,129,.07); }
.badge-blue   { color: var(--blue);      border-color: rgba(59,130,246,.35);  background: rgba(59,130,246,.07);  }
.badge-purple { color: var(--purple);    border-color: rgba(139,92,246,.35);  background: rgba(139,92,246,.07); }
.badge-yellow { color: var(--yellow);    border-color: rgba(245,158,11,.35);  background: rgba(245,158,11,.07);  }
.badge-orange { color: var(--orange);    border-color: rgba(249,115,22,.35);  background: var(--orange-light);  }

.card-icon {
  width: 48px; height: 48px;
  background: var(--orange-light); border: 1.5px solid rgba(249,115,22,.2);
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.card-icon svg { width: 22px; height: 22px; stroke: var(--orange); fill: none; }
.card-title { font-size: 1rem; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.card-desc  { font-size: .88rem; color: var(--muted); line-height: 1.75; }

/* Products grid */
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }

/* ─── Feature list ───────────────────────────────────────────────────────── */
.feat-list { display: flex; flex-direction: column; gap: 14px; }
.feat-item {
  display: flex; gap: 14px; align-items: flex-start;
  background: var(--bg-card); border: 1.5px solid var(--border);
  border-radius: 10px; padding: 18px 20px;
  transition: border-color .2s, box-shadow .2s;
}
.feat-item:hover { border-color: rgba(249,115,22,.3); box-shadow: 0 4px 16px rgba(249,115,22,.08); }
.feat-icon {
  flex-shrink: 0; width: 38px; height: 38px; border-radius: 8px;
  background: var(--orange-light); border: 1.5px solid rgba(249,115,22,.2);
  display: flex; align-items: center; justify-content: center;
}
.feat-icon svg { width: 18px; height: 18px; stroke: var(--orange); fill: none; }
.feat-title { font-size: .9rem; font-weight: 700; margin-bottom: 4px; color: var(--text); }
.feat-desc  { font-size: .82rem; color: var(--muted); line-height: 1.65; }

/* ─── Split layout ───────────────────────────────────────────────────────── */
.split {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: center;
}
.split.reverse { }

/* ─── Cases ──────────────────────────────────────────────────────────────── */
.case-card {
  background: var(--bg-card); border: 1.5px solid var(--border);
  border-radius: 12px; padding: 24px;
  display: flex; gap: 18px;
  transition: border-color .2s, box-shadow .2s;
}
.case-card:hover {
  border-color: rgba(249,115,22,.35);
  box-shadow: 0 6px 24px rgba(249,115,22,.1);
}
.case-num {
  font-family: var(--mono); font-size: 1.8rem; font-weight: 700;
  color: rgba(249,115,22,.18); line-height: 1; min-width: 36px;
}
.case-industry {
  font-family: var(--mono); font-size: .7rem; color: var(--orange);
  text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 4px; font-weight: 600;
}
.case-title { font-size: .95rem; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.case-desc  { font-size: .84rem; color: var(--muted); line-height: 1.65; }

/* ─── Services tiers ─────────────────────────────────────────────────────── */
.tier-card {
  background: var(--bg-card); border: 1.5px solid var(--border);
  border-radius: 12px; padding: 24px 28px;
  transition: all .25s; position: relative; overflow: hidden;
}
.tier-card .tier-accent {
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
}
.tier-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.tier-name {
  font-size: 1.1rem; font-weight: 700; margin-bottom: 6px; color: var(--text);
}
.tier-level {
  font-family: var(--mono); font-size: .72rem; color: var(--muted);
  letter-spacing: 1px; text-transform: uppercase; margin-bottom: 16px;
}
.tier-req { font-size: .83rem; color: var(--muted); margin-bottom: 4px; }
.tier-req strong { color: var(--text); font-weight: 600; }

/* ─── OSS terminal ───────────────────────────────────────────────────────── */
.oss-term {
  background: #1e293b; border: 1px solid #334155;
  border-radius: 12px; overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.oss-term-bar {
  background: #273345; border-bottom: 1px solid #334155;
  padding: 10px 16px; display: flex; align-items: center; gap: 8px;
}
.oss-term-body {
  padding: 20px 22px;
  font-family: var(--mono); font-size: .8rem; line-height: 2;
  color: #e2e8f0;
}
.oss-tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.oss-tag {
  font-family: var(--mono); font-size: .7rem; padding: 3px 10px;
  border-radius: 999px; border: 1px solid;
}

/* ─── Community logos ────────────────────────────────────────────────────── */
.community-row {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
}
.comm-pill {
  font-family: var(--mono); font-size: .75rem; padding: 6px 14px;
  border: 1.5px solid var(--border-md); border-radius: 999px; color: var(--muted);
  transition: all .2s;
}
.comm-pill:hover { border-color: var(--orange); color: var(--orange); background: var(--orange-light); }

/* ─── Footer ─────────────────────────────────────────────────────────────── */
footer {
  background: #1e293b;
  border-top: 1px solid #334155;
  padding: 64px 0 36px;
  color: #94a3b8;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px; margin-bottom: 48px;
}
.footer-brand-name {
  font-weight: 800; font-size: 1.1rem;
  color: #fff; margin-bottom: 12px;
}
.footer-brand-name .prompt { color: var(--orange); }
.footer-tagline { font-size: .88rem; color: #64748b; line-height: 1.8; max-width: 260px; }
.footer-contact { margin-top: 18px; font-family: var(--mono); font-size: .8rem; color: #64748b; }
.footer-contact a { color: var(--orange); }
.footer-head {
  font-size: .8rem; color: #cbd5e1; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 14px;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: .84rem; color: #64748b; transition: color .2s; }
.footer-links a:hover { color: var(--orange); }
.footer-bottom {
  border-top: 1px solid #334155; padding-top: 24px;
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--mono); font-size: .72rem; color: #475569;
  flex-wrap: wrap; gap: 12px;
}
.footer-bottom a { color: #475569; }
.footer-bottom a:hover { color: var(--orange); }

/* ─── Scroll animation ───────────────────────────────────────────────────── */
.fade-up {
  opacity: 0; transform: translateY(24px);
  transition: opacity .65s ease, transform .65s ease;
}
.fade-up.visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: .1s; }
.delay-2 { transition-delay: .2s; }
.delay-3 { transition-delay: .3s; }
.delay-4 { transition-delay: .4s; }

/* ─── Utility ────────────────────────────────────────────────────────────── */
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-40 { margin-bottom: 40px; }
.mb-60 { margin-bottom: 60px; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.gap-12 { gap: 12px; }
.flex   { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.section-gap { margin-bottom: 60px; }

/* ─── Language toggle ────────────────────────────────────────────────────── */
.zh { display: block;  }
.en { display: none;   }
.en-inline { display: none; }
.zh-inline { display: inline; }

body.lang-en .zh         { display: none;   }
body.lang-en .en         { display: block;  }
body.lang-en .zh-inline  { display: none;   }
body.lang-en .en-inline  { display: inline; }

/* for flex children */
.en-flex { display: none !important; }
body.lang-en .zh-flex { display: none !important; }
body.lang-en .en-flex { display: flex !important; }

/* ─── Keyframes ──────────────────────────────────────────────────────────── */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}
@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(249,115,22,.5); }
  50%       { box-shadow: 0 0 0 6px rgba(249,115,22,0); }
}
@keyframes glitch {
  0%, 92%, 100% { transform: none; text-shadow: none; clip-path: none; }
  93% { transform: translateX(-3px); text-shadow: 3px 0 var(--orange); }
  94% { transform: translateX(3px);  text-shadow: -3px 0 var(--blue); }
  95% { transform: none; clip-path: inset(30% 0 40% 0); }
  96% { transform: translateX(3px);  clip-path: inset(60% 0 5% 0); text-shadow: -3px 0 var(--orange-dim); }
  97% { transform: none; text-shadow: none; clip-path: none; }
}
.glitch { animation: glitch 6s ease-in-out infinite; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}

/* ─── Orange accent divider ──────────────────────────────────────────────── */
.orange-line {
  width: 48px; height: 4px; background: var(--orange);
  border-radius: 4px; margin-bottom: 20px;
}

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .grid-4  { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .hero-content   { grid-template-columns: 1fr; gap: 40px; }
  .split          { grid-template-columns: 1fr; gap: 40px; }
  .grid-3         { grid-template-columns: 1fr; }
  .grid-2         { grid-template-columns: 1fr; }
  .grid-4         { grid-template-columns: 1fr; }
  .stats-grid     { grid-template-columns: repeat(2,1fr); gap: 28px; }
  .footer-grid    { grid-template-columns: 1fr; gap: 32px; }
  .nav-links      { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute;
    top: 64px; left: 0; right: 0; background: #fff;
    border-bottom: 1px solid var(--border); padding: 12px;
    gap: 4px; box-shadow: var(--shadow-lg);
  }
  .nav-hamburger  { display: flex; }
  .section        { padding: 64px 0; }
  .hero-title     { font-size: 2rem; }
  .stat-num       { font-size: 2rem; }

  .dropdown {
    position: static !important; box-shadow: none !important; border: none !important;
    background: var(--bg-sec) !important; border-radius: 6px !important;
    margin: 4px 0 0 !important; padding: 4px !important;
    display: none !important; animation: none !important;
  }
  .dropdown::before { display: none !important; }
  .nav-links > li.open .dropdown { display: flex !important; flex-direction: column; }
  .nav-links > li > a { pointer-events: auto; }
}

/* ─── Dropdown Navigation ────────────────────────────────────────────────── */
.nav-links > li { position: relative; }
.nav-links > li > a { display: flex; align-items: center; gap: 3px; }

.chevron {
  font-style: normal; font-size: .6rem; opacity: .4; line-height: 1;
  transition: transform .2s, opacity .2s, color .2s; margin-left: 1px;
}
.nav-links > li:hover > a .chevron,
.nav-links > li:focus-within > a .chevron {
  transform: rotate(90deg); opacity: 1; color: var(--orange);
}

.dropdown {
  display: none;
  position: absolute; top: 100%; left: 0;
  min-width: 185px;
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 6px 6px;
  box-shadow: 0 12px 40px rgba(0,0,0,.12);
  z-index: 300;
  animation: dd-in .14s ease;
}
.nav-links > li:hover .dropdown,
.nav-links > li:focus-within .dropdown { display: flex; flex-direction: column; }

.dropdown a {
  display: block; padding: 8px 12px;
  color: var(--muted); font-family: var(--sans); font-size: .85rem;
  border-radius: 4px; white-space: nowrap;
  transition: color .15s, background .15s;
}
.dropdown a:hover { color: var(--orange); background: var(--orange-light); }

.dropdown::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--yellow));
  border-radius: var(--radius) var(--radius) 0 0;
}

@keyframes dd-in {
  from { opacity: 0; transform: translateY(-5px); }
  to   { opacity: 1; transform: none; }
}