/* ============================================
   AI NEXUS — Redesigned Homepage
   ui-new Design System · MD3 + Apple HIG + Fluent
   ============================================ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
@media(prefers-reduced-motion:reduce){*,*::after,*::before{animation-duration:0.01ms!important;transition-duration:0.01ms!important;scroll-behavior:auto!important}}

/* ----- Design Tokens (Light) ----- */
:root,[data-theme="light"]{
  --primary:#1557d4;
  --primary-hover:#4096ff;
  --primary-bg:rgba(22,119,255,0.06);
  --primary-soft:rgba(22,119,255,0.15);
  --primary-border:rgba(22,119,255,0.20);
  --accent:#7c3aed;
  --accent2:#a855f7;
  --green:#52c41a;
  --gold:#faad14;
  --red:#ff4d4f;
  --bg:#ffffff;
  --bg-alt:#f7f8fa;
  --surface:#ffffff;
  --surface-hover:#f5f6f8;
  --border:#2a2a3e;
  --border-color:#2a2a3e;
  --border-color:#d5d8e0;
  --border-light:#f0f0f0;
  --warning:#ea580c;
  --success:#059669;
  --danger:#dc2626;
  --text:#1a1a2e;
  --text-secondary:#5a5a72;
  --text-muted:#8c8ca1;
  --text-inverse:#ffffff;
  --shadow-sm:0 1px 2px rgba(0,0,0,0.04), 0 4px 16px rgba(0,0,0,0.06);
  --shadow-md:0 4px 8px rgba(0,0,0,0.06), 0 12px 32px rgba(0,0,0,0.10);
  --shadow-lg:0 8px 24px rgba(0,0,0,0.08), 0 20px 48px rgba(0,0,0,0.12);
  --nav-bg:#ffffff;
  --nav-border:rgba(232,234,237,0.8);
  --hero-gradient:linear-gradient(135deg,#1557d4 0%,#7c3aed 100%);
  --hero-glow-start:rgba(22,119,255,0.06);
  --hero-glow-end:rgba(124,58,237,0.05);
  --ambient-gradient:radial-gradient(ellipse at 20% 50%,rgba(22,119,255,0.25) 0%,rgba(22,119,255,0.08) 50%,transparent 100%),radial-gradient(ellipse at 80% 20%,rgba(124,58,237,0.18) 0%,rgba(124,58,237,0.06) 50%,transparent 100%);
  --code-bg:#f4f5f7;
  --code-text:#1a1a2e;
  --provider-logo-bg:#f7f8fa;
  --provider-logo-border:transparent;
}

/* ----- Design Tokens (Dark) ----- */
[data-theme="dark"]{
  --bg:#0d0d1a;
  --bg-alt:#111128;
  --surface:#16162e;
  --surface-hover:#1e1e3a;
  --border:#2a2a4a;
  --border-light:#1e1e36;
  --text:#e8e8f0;
  --text-secondary:#a0a0b8;
  --text-muted:#6b6b85;
  --text-inverse:#0d0d1a;
  --shadow-sm:0 1px 2px rgba(0,0,0,0.2), 0 4px 16px rgba(0,0,0,0.3);
  --shadow-md:0 4px 8px rgba(0,0,0,0.3), 0 12px 32px rgba(0,0,0,0.4);
  --shadow-lg:0 8px 24px rgba(0,0,0,0.4), 0 20px 48px rgba(0,0,0,0.5);
  --nav-bg:#0d0d1a;
  --nav-border:rgba(42,42,74,0.8);
  --hero-gradient:linear-gradient(135deg,#4096ff 0%,#a855f7 100%);
  --hero-glow-start:rgba(64,150,255,0.08);
  --hero-glow-end:rgba(168,85,247,0.06);
  --ambient-gradient:radial-gradient(ellipse at 20% 50%,rgba(22,119,255,0.30) 0%,rgba(22,119,255,0.12) 50%,transparent 100%),radial-gradient(ellipse at 80% 20%,rgba(124,58,237,0.22) 0%,rgba(124,58,237,0.08) 50%,transparent 100%);
  --code-bg:#1e1e3a;
  --code-text:#e8e8f0;
  --provider-logo-bg:#16162e;
  --provider-logo-border:#2a2a4a;
  --primary-bg:rgba(22,119,255,0.12);
  --primary-soft:rgba(22,119,255,0.25);
  --primary-border:rgba(22,119,255,0.30);
}

/* ----- System Theme (auto) ----- */
@media(prefers-color-scheme:dark){
  [data-theme="auto"]{
    --bg:#0d0d1a;
    --bg-alt:#111128;
    --surface:#16162e;
    --surface-hover:#1e1e3a;
    --border:#2a2a4a;
    --border-light:#1e1e36;
    --text:#e8e8f0;
    --text-secondary:#a0a0b8;
    --text-muted:#6b6b85;
    --text-inverse:#0d0d1a;
    --shadow-sm:0 1px 2px rgba(0,0,0,0.2), 0 4px 16px rgba(0,0,0,0.3);
    --shadow-md:0 4px 8px rgba(0,0,0,0.3), 0 12px 32px rgba(0,0,0,0.4);
    --shadow-lg:0 8px 24px rgba(0,0,0,0.4), 0 20px 48px rgba(0,0,0,0.5);
    --nav-bg:rgba(13,13,26,0.9);
    --nav-border:rgba(42,42,74,0.8);
    --hero-gradient:linear-gradient(135deg,#4096ff 0%,#a855f7 100%);
    --hero-glow-start:rgba(64,150,255,0.08);
    --hero-glow-end:rgba(168,85,247,0.06);
    --ambient-gradient:radial-gradient(ellipse at 20% 50%,rgba(22,119,255,0.30) 0%,rgba(22,119,255,0.12) 50%,transparent 100%),radial-gradient(ellipse at 80% 20%,rgba(124,58,237,0.22) 0%,rgba(124,58,237,0.08) 50%,transparent 100%);
    --code-bg:#1e1e3a;
    --code-text:#e8e8f0;
    --provider-logo-bg:#16162e;
    --provider-logo-border:#2a2a4a;
    --primary-bg:rgba(22,119,255,0.12);
    --primary-soft:rgba(22,119,255,0.25);
    --primary-border:rgba(22,119,255,0.30);
  }
}
@media(prefers-color-scheme:light){
  [data-theme="auto"]{
    --primary:#1557d4;
    --primary-hover:#4096ff;
    --primary-bg:rgba(22,119,255,0.06);
    --primary-soft:rgba(22,119,255,0.20);
    --primary-border:rgba(22,119,255,0.20);
    --accent:#7c3aed;
    --accent2:#a855f7;
    --green:#52c41a;
    --gold:#faad14;
    --red:#ff4d4f;
    --bg:#ffffff;
    --bg-alt:#f7f8fa;
    --surface:#ffffff;
    --surface-hover:#f5f6f8;
    --border:#2a2a3e;
  --border-color:#2a2a3e;
  --border-color:#d5d8e0;
    --border-light:#f0f0f0;
  --warning:#ea580c;
  --success:#059669;
  --danger:#dc2626;
    --text:#1a1a2e;
    --text-secondary:#5a5a72;
    --text-muted:#8c8ca1;
    --text-inverse:#ffffff;
    --shadow-sm:0 1px 2px rgba(0,0,0,0.04), 0 4px 16px rgba(0,0,0,0.06);
    --shadow-md:0 4px 8px rgba(0,0,0,0.06), 0 12px 32px rgba(0,0,0,0.10);
    --shadow-lg:0 8px 24px rgba(0,0,0,0.08), 0 20px 48px rgba(0,0,0,0.12);
    --nav-bg:rgba(255,255,255,0.85);
    --nav-border:rgba(232,234,237,0.8);
    --hero-gradient:linear-gradient(135deg,#1557d4 0%,#7c3aed 100%);
    --hero-glow-start:rgba(22,119,255,0.06);
    --hero-glow-end:rgba(124,58,237,0.05);
    --ambient-gradient:radial-gradient(ellipse at 20% 50%,rgba(22,119,255,0.25) 0%,rgba(22,119,255,0.08) 50%,transparent 100%),radial-gradient(ellipse at 80% 20%,rgba(124,58,237,0.18) 0%,rgba(124,58,237,0.06) 50%,transparent 100%);
    --code-bg:#f4f5f7;
    --code-text:#1a1a2e;
    --provider-logo-bg:#f7f8fa;
    --provider-logo-border:transparent;
  }
}

/* ----- Base Styles ----- */
body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,'Noto Sans',sans-serif,'Apple Color Emoji','Segoe UI Emoji';
  font-size:15px;line-height:1.6;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  transition:background 0.3s cubic-bezier(0.2,0,0,1),color 0.3s cubic-bezier(0.2,0,0,1);
  position:relative;
}
body::before{
  content:'';position:fixed;top:0;left:0;width:100%;height:100%;
  background:var(--ambient-gradient);
  pointer-events:none;z-index:-1;
}
a{color:var(--primary);text-decoration:none;transition:color 0.2s cubic-bezier(0.2,0,0,1)}
a:hover{color:var(--primary-hover)}
img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-title{
  font-size:clamp(24px,3vw,32px);font-weight:700;text-align:center;
  margin-bottom:12px;letter-spacing:-0.02em;color:var(--text);
}
.section-subtitle{
  font-size:15px;text-align:center;color:var(--text-secondary);
  max-width:640px;margin:0 auto 48px;line-height:1.6;
}

/* ----- Typography ----- */
h1,h2,h3,h4{line-height:1.2;font-weight:600}
code{font-family:'SF Mono','Fira Code','Cascadia Code','Consolas',monospace;font-size:13px;color:#000}

/* ----- Utility ----- */
.gradient-text{background:var(--hero-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 24px;border-radius:8px;font-size:15px;font-weight:600;
  cursor:pointer;border:none;transition:all 0.2s cubic-bezier(0.2,0,0,1);
  text-decoration:none;position:relative;line-height:1.4;
}
.btn:hover{transform:translateY(-1px);filter:brightness(1.08)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 2px 8px rgba(22,119,255,0.25)}
.btn-primary:hover{background:var(--primary-hover);color:#fff;box-shadow:0 4px 16px rgba(22,119,255,0.35)}
.btn-outline{background:transparent;color:var(--primary);border:1.5px solid var(--primary-border)}
.btn-outline:hover{background:var(--primary-bg);border-color:var(--primary)}
.btn-signin{
  display:inline-flex;align-items:center;justify-content:center;
  padding:5px 16px;border-radius:16px 0 0 16px;font-size:13px;font-weight:600;
  cursor:pointer;border:none;transition:all 0.2s cubic-bezier(0.2,0,0,1);
  text-decoration:none;line-height:1.4;background:var(--bg-alt);color:var(--text);
}
.btn-signin:hover{background:var(--surface-hover)}
.btn-signup{
  display:inline-flex;align-items:center;justify-content:center;
  padding:5px 16px;border-radius:0 16px 16px 0;font-size:13px;font-weight:600;
  cursor:pointer;border:none;transition:all 0.2s cubic-bezier(0.2,0,0,1);
  text-decoration:none;line-height:1.4;background:#1557d4;color:#fff;
}
.btn-signup:hover{background:#4096ff}
.btn-lg{padding:14px 32px;font-size:17px;border-radius:8px}
.btn-sm{padding:6px 16px;font-size:13px}

/* Pulse animation for CTA */
@keyframes pulse-glow{
  0%,100%{box-shadow:0 2px 8px rgba(22,119,255,0.25)}
  50%{box-shadow:0 2px 8px rgba(22,119,255,0.25),0 0 0 8px rgba(22,119,255,0.08),0 0 0 16px rgba(22,119,255,0.04)}
}
.btn-pulse{animation:pulse-glow 2.5s ease-in-out infinite}
@keyframes shimmer-sweep{0%{left:-60%}50%{left:100%}100%{left:100%}}

/* ----- Navigation ----- */
.navbar{
  position:sticky;top:0;z-index:1000;
  background:var(--nav-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--nav-border);
  transition:background 0.3s cubic-bezier(0.2,0,0,1),border-color 0.3s cubic-bezier(0.2,0,0,1);
}
.navbar .container{display:flex;align-items:center;height:64px;gap:0;justify-content:space-between}
.navbar-logo{
  display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;
  color:var(--text);text-decoration:none;flex-shrink:0;
}
.navbar-logo:hover{color:var(--text)}
.navbar-logo-icon{width:28px;height:28px;flex-shrink:0}
.navbar-left{display:flex;align-items:center;gap:20px;flex-shrink:0}
.navbar-links{display:flex;align-items:center;gap:16px;margin:0}
.navbar-link{
  position:relative;padding:8px 8px;font-size:16px;font-weight:600;
  color:var(--text);border-radius:6px;transition:all 0.2s cubic-bezier(0.2,0,0,1);
  text-decoration:none;white-space:nowrap;
}
.navbar-link:hover{color:#1557d4;background:transparent}
.navbar-link.active{color:#1557d4}
.navbar-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}
.nav-icon-btn{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:8px;border:none;background:var(--bg-alt,#f7f8fa);color:var(--text-secondary,#5a5a72);font-size:16px;cursor:pointer;transition:all 0.2s}
.nav-icon-btn:hover{background:var(--surface-hover,#f0f0f0);color:#1557d4}
.dd-wrap{position:relative}
.dd-menu{display:none;position:absolute;top:calc(100% + 4px);right:0;background:var(--bg-elevated,#fff);border:1px solid var(--border,rgba(0,0,0,0.06));border-radius:8px;padding:4px;min-width:160px;z-index:200;box-shadow:0 6px 20px rgba(0,0,0,0.08)}
.dd-menu.open{display:block}
.dd-menu a{display:block;padding:7px 12px;border-radius:4px;color:var(--text-secondary,#666);text-decoration:none;font-size:13px;transition:all 0.15s;cursor:pointer}
.dd-menu a:hover{background:var(--hover-bg,rgba(0,0,0,0.04));color:#1557d4}
.dd-menu a.active{color:#1557d4;background:rgba(22,119,255,0.06);font-weight:500}
.dd-menu .dd-item{display:block;padding:7px 12px;border-radius:4px;color:var(--text-secondary,#666);text-decoration:none;font-size:13px;transition:all 0.15s;cursor:pointer}
.dd-menu .dd-item:hover{background:var(--hover-bg,rgba(0,0,0,0.04));color:#1557d4}
.dd-menu a .icon{display:inline-block;width:18px;margin-right:6px}
.bell-btn,.theme-btn,.lang-btn{
  width:32px;height:32px;border-radius:50%;border:none;
  background:var(--bg-alt);color:var(--text-secondary);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;transition:all 0.2s cubic-bezier(0.2,0,0,1);position:relative;
}
.bell-btn:hover,.theme-btn:hover,.lang-btn:hover{background:var(--surface-hover);color:var(--text)}
.dropdown{position:relative;display:inline-block}
.dropdown-menu{
  position:absolute;top:calc(100% + 6px);right:0;min-width:140px;
  background:var(--surface);border:1px solid var(--border);border-radius:12px;
  box-shadow:var(--shadow-md);padding:6px;z-index:100;
  opacity:0;visibility:hidden;transform:translateY(-4px);pointer-events:none;
  transition:all 0.2s cubic-bezier(0.2,0,0,1);
}
.dropdown.open .dropdown-menu{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.dropdown-item{
  display:block;width:100%;padding:8px 14px;font-size:13px;color:var(--text-secondary);
  border:none;background:none;cursor:pointer;border-radius:6px;text-align:left;
  transition:all 0.15s cubic-bezier(0.2,0,0,1);
}
.dropdown-item:hover{background:var(--primary-bg);color:var(--primary)}
.dropdown-item.active{color:var(--primary);font-weight:600}
.mobile-menu-btn{display:none;width:36px;height:36px;border-radius:8px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;align-items:center;justify-content:center;font-size:20px}

/* ----- Hero Section ----- */
.hero{
  padding:32px 0 60px;background:linear-gradient(180deg,var(--hero-glow-start) 0%,var(--bg) 20%,var(--bg) 80%,var(--hero-glow-end) 100%);position:relative;overflow:hidden;
  transition:background 0.3s cubic-bezier(0.2,0,0,1);
}
.hero .container{display:flex;align-items:center;gap:60px;min-height:calc(100vh - 64px - 140px);padding:0 24px}
.hero-content{flex:1 1 50%;max-width:50%;padding-top:20px}
.hero-title{
  font-size:clamp(42px,6vw,64px);font-weight:800;line-height:1.1;
  letter-spacing:-0.03em;margin-bottom:36px;color:var(--text);margin-top:-16px
}
.hero-title-highlight{display:block;font-weight:800;position:relative;overflow:hidden}
.hero-title-highlight::after{content:'';position:absolute;top:0;left:-100%;width:60%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.8),transparent);animation:shimmer-sweep 5s ease-in-out infinite}
@keyframes shimmer-sweep{0%{left:-100%}100%{left:150%}}
.hero-subtitle{font-size:clamp(16px,2vw,22px);font-weight:600;color:var(--accent);margin-bottom:18px;letter-spacing:0.5px}
.hero-desc{font-size:16px;color:var(--text-secondary);margin-bottom:32px;line-height:1.6;max-width:100%}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px;justify-content:center}
.hero-actions .btn{flex:1;min-width:140px;justify-content:center;padding:12px 20px!important}
.hero-visual{
  flex:1 1 50%;max-width:50%;position:relative;display:flex;align-items:center;justify-content:center;
}
.code-visual-inner{width:100%}
.code-block{
  background:var(--code-bg);border-radius:12px;padding:20px 24px;
  box-shadow:var(--shadow-md);width:100%;font-size:13px;line-height:1.7;
  border:1px solid var(--border);transition:all 0.3s cubic-bezier(0.2,0,0,1);
  color:var(--code-text);
}
.code-block .line{display:flex;gap:12px}
.code-block .num{color:var(--text-muted);text-align:right;min-width:20px;user-select:none}
.code-block .keyword{color:#d63384}
.code-block .string{color:var(--green)}
.code-block .fn{color:var(--primary)}
.code-block .comment{color:var(--text-muted);font-style:italic}
.code-block .const{color:var(--accent)}
.code-label{position:absolute;top:-10px;left:24px;z-index:3;font-size:12px;font-weight:600;color:var(--text-secondary);display:flex;align-items:center;gap:4px;letter-spacing:0.02em;background:var(--code-bg);padding:0 10px;border-radius:4px;white-space:nowrap}
.code-block-wrap{position:relative}
.code-block-wrap:hover .code-copy-btn{opacity:1}
.code-copy-btn{position:absolute;top:8px;right:8px;z-index:2;opacity:0;transition:opacity .2s;cursor:pointer;background:var(--bg-card);border:1px solid var(--border);border-radius:6px;width:32px;height:32px;display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1}
.code-copy-btn:hover{background:var(--bg-hover);border-color:var(--primary)}
.hero-urlbar{display:flex;align-items:center;gap:8px;margin-top:20px;padding:10px 16px;background:var(--bg-alt);border-radius:8px;border:1px solid var(--border);min-width:0}
.hero-urlbar .urlbar-label{font-size:12px;font-weight:600;color:var(--text-muted);white-space:nowrap;flex-shrink:0}
.hero-urlbar .urlbar-code{font-size:14px;font-family:ui-monospace,SFMono-Regular,SF Mono,Menlo,Consolas,monospace;color:#000;font-weight:400;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
[data-theme="dark"] .hero-urlbar .urlbar-code{color:#fff}
@media(prefers-color-scheme:dark){[data-theme="auto"] .hero-urlbar .urlbar-code{color:#fff}}
.hero-urlbar .urlbar-copy{flex-shrink:0;width:28px;height:28px;border:1px solid var(--border);border-radius:6px;background:var(--bg-card);cursor:pointer;font-size:14px;display:flex;align-items:center;justify-content:center;transition:all .15s;margin-left:auto}
.hero-urlbar .urlbar-copy:hover{background:var(--bg-hover);border-color:var(--primary)}
.hero-decoration{
  position:absolute;top:-80px;right:-80px;width:500px;height:500px;
  background:radial-gradient(circle,var(--primary) 0%,rgba(22,119,255,0.3) 30%,transparent 70%);
  border-radius:50%;pointer-events:none;opacity:0.25;
}
.hero-decoration-2{
  position:absolute;bottom:0;left:-120px;width:600px;height:600px;
  background:radial-gradient(circle,rgba(124,58,237,0.3) 0%,rgba(124,58,237,0.12) 30%,transparent 70%);
  border-radius:50%;pointer-events:none;opacity:0.4;
}

/* ----- Stats / Trust Bar ----- */
.stats-bar{
  padding:40px 0;
  transition:background 0.3s cubic-bezier(0.2,0,0,1);
  background:var(--bg-elevated);
  margin:24px auto;
  max-width:900px;
  border-radius:16px;
  border:1px solid var(--border-color);
}
.stats-grid{display:flex;justify-content:center;gap:48px;flex-wrap:wrap}
.stat-item{text-align:center;min-width:140px}
.stat-number{
  font-size:clamp(28px,3.5vw,40px);font-weight:800;background:var(--hero-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  letter-spacing:-0.02em;line-height:1.1;
}
.stat-label{font-size:14px;color:var(--text-secondary);margin-top:4px}

/* ----- Why Developers ----- */
.why-section{}
.features-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.feature-card{
  background:var(--surface);border-radius:12px;padding:28px 24px;
  box-shadow:var(--shadow-sm);border:1px solid var(--border-color);
  transition:all 0.3s cubic-bezier(0.2,0,0,1);
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.feature-icon{font-size:28px;margin-bottom:14px;display:block}
.feature-card-title{font-size:18px;font-weight:600;margin-bottom:6px;color:var(--text)}
.feature-card-desc{font-size:14px;color:var(--text-secondary);line-height:1.5}

/* ----- Featured Models ----- */
.models-section{background:var(--bg)}
.models-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.model-card{
  background:var(--surface);border-radius:12px;padding:24px;
  box-shadow:var(--shadow-sm);border:1px solid var(--border-light);
  transition:all 0.3s cubic-bezier(0.2,0,0,1);position:relative;
}
.model-logo{height:52px;display:flex;align-items:center;margin-bottom:6px}
.model-logo img{height:32px;width:auto;object-fit:contain}
.model-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.model-badge{
  position:absolute;top:12px;right:12px;
  background:#ff4d4f;color:#fff;font-size:11px;font-weight:600;
  padding:3px 10px;border-radius:20px;
}
.model-name{font-size:16px;font-weight:600;margin-bottom:12px;color:var(--text)}
.model-pricing{display:flex;gap:24px;margin-bottom:12px;font-size:13px}
.model-price-item{}
.model-price-label{color:var(--text-muted);font-size:12px}
.model-price-value{color:var(--text);font-weight:600}
.model-use{display:inline-block;font-size:12px;padding:3px 10px;border-radius:20px;
  background:var(--primary-bg);color:var(--primary);font-weight:500}

/* ----- Pricing Table ----- */
.pricing-section{}
.pricing-table-wrap{overflow-x:auto;border-radius:12px;border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow-sm)}
.pricing-table{width:100%;border-collapse:collapse;font-size:14px;}
.pricing-table thead{background:var(--bg-alt)}
.pricing-table th{
  padding:14px 20px;text-align:left;font-size:13px;font-weight:600;
  color:var(--text-secondary);text-transform:uppercase;letter-spacing:0.04em;
  white-space:nowrap;
}
.pricing-table td{
  padding:12px 20px;color:var(--text);
  transition:background 0.15s cubic-bezier(0.2,0,0,1);
}
.pricing-table tbody tr:nth-child(even){background:var(--bg-alt);}
.pricing-table tbody tr:hover td{background:var(--primary-bg)}
.pricing-table tbody tr:last-child td{border-bottom:none}
.pricing-table .model-cell{font-weight:600}
.pricing-table .highlight td{background:var(--primary-soft)!important}
.pricing-note{
  margin-top:20px;font-size:13px;color:var(--text-muted);text-align:center;padding:12px;
  background:var(--surface);border-radius:8px;border:1px solid var(--border-light);
}
.pricing-link{display:block;text-align:center;margin-top:16px;font-size:14px;font-weight:500}

/* ----- Providers ----- */
.providers-section{background:var(--bg)}
.providers-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:20px}
.provider-logo{
  background:var(--provider-logo-bg);border-radius:12px;padding:24px 16px;
  display:flex;align-items:center;justify-content:center;min-height:72px;
  border:1px solid var(--provider-logo-border);font-weight:600;font-size:14px;
  color:var(--text-secondary);transition:all 0.3s cubic-bezier(0.2,0,0,1);
}
.provider-logo:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm);color:var(--text);background:var(--surface)}

/* ----- CTA Section ----- */
.cta-section{text-align:center;padding:48px 24px;position:relative;overflow:hidden;}
.cta-section::before{
  content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;
  background:radial-gradient(circle at center,var(--primary-soft) 0%,transparent 50%);
  pointer-events:none;opacity:0.4;
}
.cta-title{font-size:clamp(28px,4vw,40px);font-weight:700;margin-bottom:12px;color:var(--text);}
.cta-section .btn{position:relative;z-index:1}

/* ----- Referral Banner ----- */
.referral-banner{
  display:flex;align-items:center;justify-content:center;gap:24px;
  margin-top:32px;padding:18px 32px;
  background:var(--bg-container);border-radius:16px;
  border:1px solid var(--primary-border);
  box-shadow:var(--shadow-sm);position:relative;z-index:1;
  text-align:center;
}
.referral-item{
  display:flex;align-items:center;gap:12px;justify-content:center;flex:1;
}
.referral-icon{
  font-size:28px;line-height:1;flex-shrink:0;
}
.referral-item div{
  text-align:left;
}
.referral-item strong{
  display:block;font-size:15px;font-weight:600;color:var(--text);margin-bottom:2px;
}
.referral-item span{
  display:block;font-size:13px;color:var(--text-secondary);
}
.referral-divider{
  width:1px;height:36px;background:var(--border);flex-shrink:0;
}
@media(max-width:600px){
  .referral-banner{flex-direction:column;gap:12px;padding:18px 16px;}
  .referral-divider{width:60%;height:1px;margin:0 auto;}
  .referral-item div{text-align:center;}
}

/* ----- Footer ----- */
.footer{
  background:var(--bg);border-top:1px solid var(--border-light);
  padding:48px 0 32px;margin-top:-28px;
}
.footer-grid{display:grid;grid-template-columns:2fr 3fr 1fr;gap:40px;margin-bottom:32px}
.footer-brand{font-size:18px;font-weight:700;color:var(--text);margin-bottom:8px}
.footer-tagline{font-size:14px;color:var(--text-secondary);margin-bottom:16px;font-weight:500}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 20px}
.footer-link{font-size:14px;color:var(--text-secondary);transition:color 0.2s cubic-bezier(0.2,0,0,1)}
.footer-link:hover{color:var(--primary)}
.footer-contact{font-size:13px;color:var(--text-muted)}
.footer-contact a{color:var(--text-secondary)}
.footer-contact a:hover{color:var(--primary)}
.footer-bottom{border-top:1px solid var(--border-light);padding-top:20px;text-align:center;font-size:13px;color:var(--text-muted)}

/* ----- Animations ----- */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(24px)}
  to{opacity:1;transform:translateY(0)}
}
.fade-up{opacity:1;transform:translateY(24px);transition:opacity 0.5s cubic-bezier(0.2,0,0,1),transform 0.5s cubic-bezier(0.2,0,0,1)}
.fade-up.visible{opacity:1;transform:translateY(0)}
.stagger-children>*{opacity:1;transform:translateY(24px);transition:opacity 0.5s cubic-bezier(0.2,0,0,1),transform 0.5s cubic-bezier(0.2,0,0,1)}
.stagger-children.visible>*:nth-child(1){transition-delay:0ms}
.stagger-children.visible>*:nth-child(2){transition-delay:80ms}
.stagger-children.visible>*:nth-child(3){transition-delay:160ms}
.stagger-children.visible>*:nth-child(4){transition-delay:240ms}
.stagger-children.visible>*:nth-child(5){transition-delay:320ms}
.stagger-children.visible>*:nth-child(6){transition-delay:400ms}
.stagger-children.visible>*:nth-child(7){transition-delay:480ms}
.stagger-children.visible>*:nth-child(8){transition-delay:560ms}
.stagger-children.visible>*{opacity:1;transform:translateY(0)}

/* ----- Count-up animation ----- */
@keyframes countUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.stat-number.counted{animation:countUp 0.4s cubic-bezier(0.2,0,0,1) both}

/* ----- Responsive ----- */
@media(max-width:1024px){
  .hero .container{flex-direction:column;text-align:center;gap:40px;min-height:auto}
  .hero-content{flex:1 1 100%;max-width:100%}
  .hero-desc{margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center;gap:10px}
  .agentic-trust-split{grid-template-columns:1fr!important}

  .hero-visual{flex:1 1 100%;max-width:100%}
  .hero-urlbar{max-width:100%}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .usecases-section div[style*="grid-template-columns"]{grid-template-columns:repeat(2,1fr)!important}
  .agentic-trust-grid{grid-template-columns:repeat(2,1fr)!important}
  .models-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .steps-grid::before{display:none}
}
@media(max-width:768px){
  .navbar-links{display:none}
  .navbar-actions .btn{display:none}
  .mobile-menu-btn{display:flex}
  .mobile-menu-btn.show+.navbar-links{display:flex;flex-direction:column;position:absolute;top:64px;left:0;right:0;background:var(--nav-bg);backdrop-filter:blur(16px);border-bottom:1px solid var(--border);padding:8px 16px}
  .section{padding:60px 0}
  .stats-grid{gap:24px}
  .steps-grid{grid-template-columns:1fr}
  .features-grid{grid-template-columns:1fr}
  .usecases-section div[style*="grid-template-columns"]{grid-template-columns:1fr!important}
  .agentic-trust-grid{grid-template-columns:1fr!important}
  .models-grid{grid-template-columns:1fr}
  .pricing-table{font-size:13px}
  /* Agentic Trust dashboard mobile */
  .agentic-trust-dashboard{overflow-x:auto!important;-webkit-overflow-scrolling:touch}
  .agentic-trust-dashboard table{font-size:10px!important}
  .agentic-trust-dashboard th, .agentic-trust-dashboard td{padding:5px 3px!important;white-space:nowrap}
  .agentic-trust-dashboard .hide-mobile{display:none}
  .agentic-trust-dashboard .hide-limit{display:none}
  .agentic-trust-stats{font-size:11px!important;padding:8px 10px!important}
  .agentic-trust-stats .stat-num{font-size:18px!important}
  .agentic-trust-identity{font-size:10px!important;overflow:hidden;text-overflow:ellipsis}
  .table-wrap{overflow-x:auto}
  .pricing-table th,.pricing-table td{padding:10px 12px}
  .providers-grid{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .hero{padding:48px 0 40px}
  .hero-actions{flex-direction:column;align-items:center}
  .hero-actions .btn{width:100%;justify-content:center}
  .section-title{font-size:clamp(22px,5vw,28px)}
  .navbar .container{height:56px}
  .stat-item{min-width:100px}
}
@media(max-width:480px){
  .container{padding:0 16px}
  .stats-grid{gap:16px}
  .stat-item{min-width:80px}
  .providers-grid{grid-template-columns:repeat(2,1fr)}
  .code-block{padding:16px;font-size:12px}
  .step-card{padding:24px 20px}
}
@media(min-width:769px){
  .navbar-links{display:flex!important}
}

/* ===== PAIN POINTS SECTION ===== */
.pain-section{padding:20px 0;position:relative}
.pain-title{font-size:clamp(24px,4vw,32px);font-weight:800;text-align:center;color:var(--text-primary);margin-bottom:6px;position:relative;z-index:1}
.pain-subtitle{font-size:17px;text-align:center;color:var(--text-secondary);margin-bottom:40px;position:relative;z-index:1;max-width:640px;margin-left:auto;margin-right:auto}
.pain-badge{display:inline-block;background:rgba(239,68,68,0.10);color:#ef4444;padding:8px 20px;border-radius:20px;font-size:16px;font-weight:700;margin-bottom:10px;letter-spacing:1px;text-transform:uppercase}
.pain-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:860px;margin:0 auto;position:relative;z-index:1}
.pain-card{background:var(--bg);border:1px solid var(--card-border);border-radius:14px;padding:24px 22px;transition:all .3s;position:relative}
.pain-card:hover{background:var(--bg-hover);border-color:rgba(239,68,68,0.2);transform:translateY(-2px)}
.pain-card-top{display:flex;align-items:flex-start;gap:14px;margin-bottom:10px}
.pain-card-icon{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;background:rgba(239,68,68,0.10);color:#ef4444}
.pain-card-title{font-size:15px;font-weight:700;color:var(--text-primary);padding-top:6px}
.pain-card-desc{font-size:13px;color:var(--text-secondary);line-height:1.6;margin-left:52px}
.pain-card-footer{display:flex;align-items:center;gap:6px;margin-top:12px;margin-left:52px;font-size:12px;color:var(--text-muted)}
.pain-card-footer .arrow{color:#ef4444;font-weight:700}
.pain-divider{display:flex;align-items:center;justify-content:center;gap:16px;margin:32px 0 0;position:relative;z-index:1}
.pain-divider-line{flex:1;height:1px;max-width:200px;background:linear-gradient(90deg,transparent,var(--card-border),transparent)}
.pain-divider-text{font-size:15px;color:#6366f1;letter-spacing:2px;text-transform:uppercase;font-weight:700}
@media(max-width:640px){.pain-grid{grid-template-columns:1fr;gap:12px}.pain-card{padding:18px 16px}.pain-card-desc{margin-left:0;margin-top:6px}.pain-card-footer{margin-left:0}}
/* ===== Agentic Trust 板块 ===== */
.trust-section{padding:48px 24px;max-width:100%;margin:0 auto;}
.trust-section .section-subtitle{max-width:600px;margin:0 auto;}
.trust-split{display:grid;grid-template-columns:1.6fr 1fr;gap:24px;}
@media(max-width:768px){.trust-split{grid-template-columns:1fr;}}

/* 仪表盘 */
.dash-card{border-radius:14px;border:1px solid #9ca0b0;padding:12px;}
.dash-stats{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap;}
.dash-stat{background:var(--surface);border-radius:10px;padding:12px 16px;flex:1;min-width:80px;text-align:center;border:1px solid #9ca0b0;}
.dash-stat-label{font-size:10px;color:var(--text-secondary);font-weight:600;text-transform:uppercase;letter-spacing:0.5px;}
.dash-stat-num{font-size:20px;font-weight:800;margin-top:2px;}

/* 仪表盘表格 */
.dash-table{width:100%;border-collapse:collapse;font-size:12px;}
.dash-table th{text-align:left;padding:8px 6px;font-weight:600;color:var(--text);border-bottom:1px solid var(--border-color);}
.dash-table td{padding:8px 6px;color:var(--text);border-bottom:1px solid var(--border-light);}
.dash-table td:not(.td-left){text-align:right;}
.dash-table .td-center{text-align:center;}
.dash-table .td-right{text-align:right;}

/* 状态标签 */
.status-badge{font-size:10px;font-weight:600;padding:2px 8px;border-radius:6px;}
.status-normal{background:var(--success-bg,#d1fae5);color:var(--success,#065f46);}

/* 底部 X-Agent-Identity */
.agent-identity-bar{background:var(--bg-alt);padding:8px 16px;border-radius:8px;font-family:monospace;font-size:12px;color:var(--text-muted);margin-top:16px;}

/* 信任特性卡片 */
.trust-feature{flex:1;min-width:200px;}
.trust-feature-title{font-size:17px;font-weight:700;color:var(--text-primary);margin-bottom:6px;}
.trust-feature-desc{font-size:13px;color:var(--text-secondary);line-height:1.5;}
.trust-feature-icon{font-size:28px;margin-bottom:8px;display:block;}
.trust-features-grid{display:flex;gap:16px;flex-wrap:wrap;margin-top:20px;}


/* ===== 统一容器 ===== */
.section-container{max-width:1200px;margin:0 auto;padding:0 24px;}


.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
@media(max-width:600px){.grid-2{grid-template-columns:1fr;}}

.section-header{text-align:center;margin-bottom:36px}
.ent-badge:hover{color:var(--primary);border-color:var(--primary-soft,rgba(21,87,212,0.3));transform:translateY(-1px);}