/* AIMesh Landing v4 — UUMit Dark Design System */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  /* Dark theme HSL tokens — exact UUMit palette */
  --bg-hsl:222 24% 6%;
  --fg-hsl:210 18% 98%;
  --muted-hsl:223 17% 13%;
  --muted-fg-hsl:214 17% 69%;
  --border-hsl:223 15% 18%;
  --primary-hsl:262 83% 58%;
  --primary-fg-hsl:0 0% 100%;
  --ring-hsl:262 83% 58%;
  --secondary-hsl:223 18% 12%;
  --secondary-fg-hsl:210 15% 75%;
  --accent-hsl:223 18% 15%;
  --accent-fg-hsl:210 20% 90%;
  --card-hsl:222 20% 8%;

  /* Computed colors */
  --bg:hsl(var(--bg-hsl));
  --fg:hsl(var(--fg-hsl));
  --muted:hsl(var(--muted-hsl));
  --muted-fg:hsl(var(--muted-fg-hsl));
  --border:hsl(var(--border-hsl));
  --primary:hsl(var(--primary-hsl));
  --primary-fg:hsl(var(--primary-fg-hsl));
  --secondary:hsl(var(--secondary-hsl));
  --card-bg:hsl(var(--card-hsl));

  /* Orange glow */
  --glow-purple:radial-gradient(ellipse, rgba(124,58,237,0.14) 0%, rgba(124,58,237,0.04) 35%, transparent 70%);

  /* Shadows — using HSL var + alpha pattern from UUMit */
  --shadow-card:0 1px 3px hsl(var(--fg-hsl)/.04);
  --shadow-nav:0 8px 20px -16px hsl(var(--fg-hsl)/.48);
  --shadow-hover:0 20px 54px -42px hsl(var(--fg-hsl)/.55);
  --shadow-lg:0 24px 80px -62px hsl(var(--fg-hsl)/.42);

  /* Radii */
  --radius:18px;
  --radius-sm:10px;
  --radius-pill:9999px;

  /* Typography */
  --font:-apple-system,BlinkMacSystemFont,"DM Sans","Space Grotesk","PingFang SC","Noto Sans SC","Microsoft YaHei","Helvetica Neue",sans-serif;
  --font-mono:"JetBrains Mono","SF Mono","Fira Code",monospace;
}

html{font-size:16px;-webkit-text-size-adjust:100%;color-scheme:dark}
body{
  font-family:var(--font);background:var(--bg);color:var(--fg);
  line-height:1.7;-webkit-font-smoothing:antialiased;
  min-height:100vh;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* === Scrollbar === */
::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:hsl(var(--fg-hsl)/.12);border-radius:3px}

/* === Nav === */
.nav{
  position:sticky;top:0;z-index:50;
  background:hsl(var(--bg-hsl)/.92);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid hsl(var(--border-hsl)/.6);
}
.nav-inner{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;height:56px;
}
.nav-brand{
  display:flex;align-items:center;gap:8px;
  font-size:17px;font-weight:700;color:var(--fg);
  transition:opacity .2s;
}
.nav-brand:hover{opacity:.8}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;padding:8px 14px;border-radius:var(--radius-sm);
  font-size:14px;color:var(--muted-fg);transition:all .2s;
}
.nav-links a:hover{color:var(--fg);background:hsl(var(--muted-hsl)/.42)}
.nav-cta{
  background:var(--primary)!important;color:var(--primary-fg)!important;
  font-weight:600;padding:8px 18px!important;border-radius:var(--radius-sm)!important;
}
.nav-cta:hover{
  background:hsl(var(--primary-hsl)/.9)!important;color:var(--primary-fg)!important;
  opacity:1!important;
}

/* === Hero === */
.hero{max-width:1200px;margin:0 auto;padding:48px 20px 32px;position:relative}
.hero::before{
  content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:720px;height:200px;pointer-events:none;
  background:var(--glow-purple);
}
.hero-wrap{
  display:flex;flex-direction:column;gap:36px;align-items:center;
  position:relative;z-index:1;
}
.hero-left{text-align:center;max-width:540px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 16px;border-radius:var(--radius-pill);
  background:hsl(var(--muted-hsl));border:1px solid hsl(var(--border-hsl)/.5);
  font-size:13px;color:var(--muted-fg);margin-bottom:20px;
}
.hero-badge-dot{
  display:inline-block;width:8px;height:8px;border-radius:50%;
  background:hsl(var(--primary-hsl));
  animation:pulse-dot 2s infinite;
}
.hero-title{
  font-size:32px;font-weight:800;letter-spacing:-.02em;line-height:1.15;
  margin-bottom:14px;color:var(--fg);
}
.hero-title-gradient{
  background:linear-gradient(110deg,hsl(var(--fg-hsl)) 0%,hsl(var(--fg-hsl)/.75) 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-desc{
  font-size:16px;color:var(--muted-fg);line-height:1.7;margin-bottom:24px;
}
.hero-actions{
  display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:24px;
}

/* Buttons */
.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  padding:14px 28px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;transition:all .25s;
  cursor:pointer;border:none;font-family:inherit;white-space:nowrap;
}
.btn-primary{
  background:var(--primary);color:var(--primary-fg);
  box-shadow:0 4px 20px hsl(var(--primary-hsl)/.3);
}
.btn-primary:hover{
  filter:brightness(1.1);transform:translateY(-2px);
  box-shadow:0 8px 32px hsl(var(--primary-hsl)/.4);
}
.btn-ghost{
  background:transparent;color:var(--fg);
  border:1px solid hsl(var(--border-hsl));
}
.btn-ghost:hover{
  border-color:hsl(var(--primary-hsl)/.5);
  color:hsl(var(--primary-hsl));
}

/* Hero trust */
.hero-trust{display:flex;gap:20px;justify-content:center;flex-wrap:wrap}
.trust-item{
  display:flex;align-items:center;gap:6px;
  font-size:13px;color:var(--muted-fg);
}
.trust-item svg{flex-shrink:0;opacity:.7}

/* Hero demo chat */
.hero-right{width:100%;max-width:480px}
.hero-demo{
  background:hsl(var(--card-hsl));border:1px solid hsl(var(--border-hsl)/.58);
  border-radius:var(--radius);overflow:hidden;
  box-shadow:0 18px 70px -58px hsl(var(--fg-hsl)/.38);
}
.demo-header{
  display:flex;gap:6px;padding:14px 16px;
  background:hsl(var(--muted-hsl));border-bottom:1px solid hsl(var(--border-hsl)/.4);
}
.demo-dot{width:10px;height:10px;border-radius:50%;background:hsl(var(--fg-hsl)/.15)}
.demo-body{padding:16px}
.demo-msg{margin-bottom:12px;font-size:13px;line-height:1.65}
.demo-msg:last-child{margin-bottom:0}
.demo-label{
  display:inline-block;font-weight:700;font-size:11px;margin-right:6px;
  padding:2px 8px;border-radius:4px;vertical-align:top;margin-top:2px;
}
.demo-msg.user .demo-label{
  background:hsl(var(--primary-hsl)/.12);color:var(--primary);
}
.demo-msg.ai .demo-label{
  background:hsl(160 84% 39%/.12);color:#10b981;
}
.demo-msg.user{color:var(--fg)}
.demo-msg.ai{color:var(--muted-fg)}
.demo-content{
  background:hsl(var(--muted-hsl)/.6);border-radius:10px;
  padding:12px 14px;margin-top:6px;
}

/* === Eco Bar === */
.eco-bar{
  border-top:1px solid hsl(var(--border-hsl)/.4);
  border-bottom:1px solid hsl(var(--border-hsl)/.4);
  background:hsl(var(--card-hsl));
}
.eco-inner{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;gap:10px;padding:14px 20px;
  flex-wrap:wrap;justify-content:center;font-size:12px;
}
.eco-label{color:var(--muted-fg);font-weight:500}
.eco-badge{
  padding:5px 12px;border-radius:var(--radius-pill);
  background:hsl(var(--muted-hsl));border:1px solid hsl(var(--border-hsl)/.4);
  color:var(--muted-fg);font-weight:500;white-space:nowrap;
  font-size:11px;
}
.eco-divider{color:hsl(var(--border-hsl))}

/* === Section heads === */
.section-head{text-align:center;margin-bottom:32px}
.section-head h2{
  font-size:24px;font-weight:700;color:var(--fg);margin-bottom:8px;
}
.section-sub{font-size:15px;color:var(--muted-fg)}

/* === Suggestions === */
.suggestions{max-width:1200px;margin:0 auto;padding:56px 20px}
.suggest-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.suggest-card{
  background:hsl(var(--card-hsl));border:1px solid hsl(var(--border-hsl)/.5);
  border-radius:var(--radius);padding:24px 16px;text-align:center;
  cursor:pointer;transition:all .3s;
  box-shadow:var(--shadow-card);
}
.suggest-card:nth-child(1):hover{border-color:#7c3aed/35%;box-shadow:0 20px 54px -42px hsl(var(--fg-hsl)/.55)}
.suggest-card:nth-child(2):hover{border-color:#0ea5e9/35%}
.suggest-card:nth-child(3):hover{border-color:#8b5cf6/35%}
.suggest-card:nth-child(4):hover{border-color:#10b981/35%}
.suggest-card:nth-child(5):hover{border-color:#f59e0b/35%}
.suggest-card:nth-child(6):hover{border-color:#ec4899/35%}
.suggest-card:hover{
  transform:translateY(-3px);
  background:hsl(var(--card-hsl));
}
.suggest-icon-wrap{
  width:48px;height:48px;border-radius:14px;
  background:hsl(var(--primary-hsl)/.08);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 14px;
}
.suggest-emoji{font-size:24px;line-height:1}
.suggest-card h3{font-size:15px;font-weight:700;margin-bottom:6px;color:var(--fg)}
.suggest-card p{font-size:13px;color:var(--muted-fg);line-height:1.5}

/* === Tools === */
.tools{max-width:1200px;margin:0 auto;padding:0 20px 56px}
.tools-grid{display:grid;grid-template-columns:1fr;gap:14px}
.tool-card{
  display:flex;gap:16px;
  background:hsl(var(--card-hsl));border:1px solid hsl(var(--border-hsl)/.5);
  border-radius:var(--radius);padding:24px 20px;
  transition:all .3s;cursor:pointer;
  box-shadow:var(--shadow-card);align-items:flex-start;
}
.tool-card:hover{
  transform:translateY(-3px);
  border-color:hsl(var(--primary-hsl)/.35);
  box-shadow:var(--shadow-hover);
}
.tool-icon-wrap{
  width:48px;height:48px;border-radius:14px;
  background:hsl(var(--primary-hsl)/.08);
  display:flex;align-items:center;justify-content:center;
  font-size:24px;flex-shrink:0;
}
.tool-body{flex:1;min-width:0}
.tool-top{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.tool-top h3{font-size:15px;font-weight:700;color:var(--fg)}
.tool-badge{
  padding:2px 8px;border-radius:var(--radius-pill);
  font-size:11px;font-weight:600;flex-shrink:0;
}
.tool-badge.hot{
  background:linear-gradient(135deg,hsl(45 93% 47%/.15),hsl(38 92% 50%/.1));
  color:#f59e0b;
}
.tool-badge.new{
  background:hsl(var(--primary-hsl)/.12);
  color:var(--primary);
}
.tool-badge.free{
  background:hsl(160 84% 39%/.12);
  color:#10b981;
}
.tool-body p{font-size:13px;color:var(--muted-fg);line-height:1.5;margin-bottom:8px}
.tool-link{font-size:13px;font-weight:600;color:var(--primary);transition:color .2s}
.tool-card:hover .tool-link{color:hsl(var(--primary-hsl)/.8)}
.tools-more{text-align:center;margin-top:24px}
.tools-more a{
  font-size:14px;color:var(--primary);font-weight:600;
  transition:color .2s;
}
.tools-more a:hover{color:hsl(var(--primary-hsl)/.8)}

/* === Steps === */
.steps{max-width:1200px;margin:0 auto;padding:0 20px 56px}
.steps-row{
  display:flex;align-items:center;justify-content:center;
  gap:0;flex-direction:column;margin-bottom:32px;
}
.step-card{
  background:hsl(var(--card-hsl));border:1px solid hsl(var(--border-hsl)/.5);
  border-radius:var(--radius);padding:28px 20px;text-align:center;
  box-shadow:var(--shadow-card);width:100%;max-width:260px;
}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:50%;
  background:hsl(var(--primary-hsl)/.12);color:var(--primary);
  font-size:18px;font-weight:700;margin-bottom:14px;
}
.step-card h3{font-size:15px;font-weight:700;margin-bottom:4px;color:var(--fg)}
.step-card p{font-size:13px;color:var(--muted-fg);line-height:1.6}
.step-line{font-size:22px;color:var(--muted-fg);padding:10px 0;transform:rotate(90deg);opacity:.4}
.steps-cta{text-align:center}

/* === Dev Banner === */
.dev-banner{max-width:1200px;margin:0 auto;padding:0 20px 56px}
.dev-banner-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;flex-direction:column;text-align:center;
  background:hsl(var(--primary-hsl)/.06);
  border:1px solid hsl(var(--primary-hsl)/.15);
  border-radius:var(--radius);padding:32px 24px;
  position:relative;overflow:hidden;
}
.dev-banner-inner::before{
  content:'';position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 30% 50%,rgba(124,58,237,0.08),transparent 60%);
}
.dev-text{position:relative;z-index:1}
.dev-text h2{font-size:18px;font-weight:700;margin-bottom:6px;color:var(--fg)}
.dev-text p{font-size:14px;color:var(--muted-fg);line-height:1.6}
.dev-banner-inner .btn-ghost{position:relative;z-index:1;flex-shrink:0}

/* === Footer === */
.footer{
  border-top:1px solid hsl(var(--border-hsl)/.4);
  background:hsl(var(--card-hsl));padding:32px 20px 28px;
}
.footer-inner{
  max-width:1200px;margin:0 auto;
  display:flex;flex-direction:column;align-items:center;
  gap:16px;text-align:center;
}
.footer-brand{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--muted-fg)}
.footer-links{display:flex;gap:20px;flex-wrap:wrap;justify-content:center}
.footer-links a{font-size:13px;color:var(--muted-fg);transition:color .2s}
.footer-links a:hover{color:var(--fg)}
.footer-bottom{
  display:flex;gap:16px;flex-wrap:wrap;justify-content:center;
  font-size:12px;color:hsl(var(--muted-fg-hsl)/.6);
}
.footer-bottom a{color:hsl(var(--muted-fg-hsl)/.6);transition:color .2s}
.footer-bottom a:hover{color:var(--muted-fg)}

/* === Divider line (gradient) === */
.section-divider{
  max-width:1200px;margin:0 auto;padding:0 20px;
}
.section-divider-line{
  height:1px;width:100%;
  background:linear-gradient(90deg,transparent,hsl(var(--border-hsl)/.6),transparent);
}

/* === Modal === */
.modal-backdrop{
  position:fixed;inset:0;z-index:100;
  background:hsl(var(--bg-hsl)/.75);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  display:flex;align-items:center;justify-content:center;
  padding:20px;animation:fadeIn .2s ease;
}
.modal-card{
  background:hsl(var(--card-hsl));border:1px solid hsl(var(--border-hsl)/.6);
  border-radius:var(--radius);padding:32px 28px;
  width:100%;max-width:420px;position:relative;
  box-shadow:0 24px 80px hsl(var(--bg-hsl)/.8);
  animation:scaleIn .25s ease;
}
.modal-close{
  position:absolute;top:14px;right:18px;
  background:none;border:none;color:var(--muted-fg);
  font-size:22px;cursor:pointer;line-height:1;padding:4px;
  transition:color .2s;
}
.modal-close:hover{color:var(--fg)}
.modal-card h2{font-size:20px;font-weight:700;margin-bottom:6px;color:var(--fg)}
.modal-sub{font-size:14px;color:var(--muted-fg);margin-bottom:24px}
.input{
  width:100%;padding:12px 14px;border-radius:var(--radius-sm);
  background:hsl(var(--muted-hsl));border:1px solid hsl(var(--border-hsl)/.6);
  color:var(--fg);font-size:14px;font-family:inherit;outline:none;
  margin-bottom:12px;transition:border-color .2s;
}
.input::placeholder{color:hsl(var(--muted-fg-hsl)/.5)}
.input:focus{border-color:hsl(var(--primary-hsl)/.5)}
.modal-card .btn-primary{width:100%}
.modal-error{color:#ef4444;font-size:13px;margin-top:8px;display:none}
.modal-note{font-size:12px;color:var(--muted-fg);text-align:center;margin-top:16px}
.modal-note a{color:var(--primary);transition:color .2s}
.modal-note a:hover{text-decoration:underline}

/* Career grid */
.career-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:8px}
.career-btn{
  display:flex;align-items:center;gap:10px;padding:14px 16px;
  border-radius:var(--radius-sm);
  background:hsl(var(--muted-hsl));border:1px solid hsl(var(--border-hsl)/.5);
  color:var(--fg);font-size:14px;font-family:inherit;
  cursor:pointer;transition:all .2s;
}
.career-btn:hover{
  background:hsl(var(--primary-hsl)/.08);
  border-color:hsl(var(--primary-hsl)/.35);
}
.career-btn span{font-size:20px}

/* Match loading */
.match-loading{text-align:center;padding:20px 0}
.loading-dots{display:flex;justify-content:center;gap:6px;margin-bottom:16px}
.loading-dots span{
  width:8px;height:8px;border-radius:50%;
  background:var(--primary);animation:bounce 1.2s infinite ease;
}
.loading-dots span:nth-child(2){animation-delay:.15s}
.loading-dots span:nth-child(3){animation-delay:.3s}
.match-loading p{color:var(--muted-fg);font-size:14px}
.match-badge{
  display:inline-block;padding:6px 16px;border-radius:var(--radius-pill);
  background:hsl(var(--primary-hsl)/.12);
  color:var(--primary);font-size:14px;font-weight:600;margin-bottom:12px;
}
.match-recommend{font-size:14px;color:var(--muted-fg);margin-bottom:12px}
.match-tools{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
.match-tools span{
  padding:6px 14px;border-radius:var(--radius-sm);
  font-size:13px;background:hsl(var(--muted-hsl));
  border:1px solid hsl(var(--border-hsl)/.4);
  color:var(--muted-fg);
}

/* Result card */
.result-check{
  width:56px;height:56px;border-radius:50%;
  background:hsl(160 84% 39%/.12);color:#10b981;
  display:flex;align-items:center;justify-content:center;
  font-size:28px;margin:0 auto 16px;
}
.key-box{
  display:flex;gap:8px;background:hsl(var(--muted-hsl));
  border:1px solid hsl(var(--border-hsl)/.4);
  border-radius:var(--radius-sm);padding:6px 6px 6px 14px;
  align-items:center;margin-bottom:16px;
}
.key-box code{
  flex:1;font-size:12px;color:var(--muted-fg);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  font-family:var(--font-mono);
}
.key-copy{
  padding:8px 14px;border-radius:8px;
  background:hsl(var(--primary-hsl)/.12);color:var(--primary);
  border:none;font-size:13px;font-weight:600;
  cursor:pointer;font-family:inherit;white-space:nowrap;
  transition:all .2s;
}
.key-copy:hover{background:var(--primary);color:var(--primary-fg)}
.gift-box{
  background:hsl(45 93% 47%/.08);
  border:1px solid hsl(45 93% 47%/.2);
  border-radius:var(--radius-sm);padding:14px;text-align:center;margin-bottom:16px;
}
.gift-title{font-size:15px;font-weight:600;color:#f59e0b;margin-bottom:4px}
.gift-desc{font-size:13px;color:var(--muted-fg)}
.result-links{display:flex;gap:10px}
.result-links .btn-primary,.result-links .btn-ghost{flex:1;font-size:14px;padding:12px 16px}

/* === Animations === */
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes scaleIn{from{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}
@keyframes bounce{0%,80%,100%{transform:scale(.6);opacity:.4}40%{transform:scale(1);opacity:1}}
@keyframes pulse-dot{0%,100%{opacity:1}50%{opacity:.4}}

/* Scroll-reveal */
.reveal{animation:fadeUp .6s ease both}
.reveal:nth-child(1){animation-delay:0s}
.reveal:nth-child(2){animation-delay:.1s}
.reveal:nth-child(3){animation-delay:.2s}
.reveal:nth-child(4){animation-delay:.3s}
.reveal:nth-child(5){animation-delay:.4s}
.reveal:nth-child(6){animation-delay:.5s}

/* === Desktop (768px+) === */
@media(min-width:768px){
  .nav-inner{padding:0 32px;height:64px}
  .nav-links{gap:8px}
  .nav-links a{padding:8px 16px;font-size:15px}

  .hero{padding:72px 32px 48px}
  .hero-wrap{flex-direction:row;gap:48px;align-items:center}
  .hero-left{text-align:left;flex:1}
  .hero-title{font-size:40px}
  .hero-actions{justify-content:flex-start}
  .hero-trust{justify-content:flex-start}
  .hero-right{flex:1;max-width:440px}

  .eco-inner{padding:14px 32px}

  .section-head h2{font-size:28px}

  .suggestions{padding:64px 32px}
  .suggest-grid{grid-template-columns:repeat(3,1fr);gap:16px}

  .tools{padding:0 32px 64px}
  .tools-grid{grid-template-columns:repeat(3,1fr);gap:16px}

  .steps{padding:0 32px 64px}
  .steps-row{flex-direction:row;gap:0}
  .step-line{transform:none;padding:0 20px;font-size:24px}

  .dev-banner{padding:0 32px 64px}
  .dev-banner-inner{flex-direction:row;text-align:left;padding:40px 36px}

  .footer-inner{flex-direction:row;flex-wrap:wrap;justify-content:space-between;text-align:left}
  .footer-bottom{width:100%;justify-content:center;padding-top:4px}
}

@media(min-width:1024px){
  .hero{padding:96px 32px 64px}
  .hero-title{font-size:48px}
  .hero-desc{font-size:17px}
  .suggest-card{padding:32px 24px}
}