/* ==================================================
   PKA CODE — Black & White Theme
   No border-radius. Only black and white.
   ================================================== */

/* --- Reset & Variables --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --white: #ffffff; --black: #000000;
  --gray-50: #f7f7f7; --gray-100: #e5e5e5; --gray-200: #cccccc;
  --gray-300: #999999; --gray-400: #666666; --gray-500: #333333;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  --border: 1px solid var(--black); --border-t: 2px solid var(--black);
  --max-w: 1200px;
}

html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-sans); background: var(--white); color: var(--black); line-height: 1.6; overflow-x: hidden; min-height: 100vh; }
::selection { background: var(--black); color: var(--white); }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); } h2 { font-size: clamp(1.8rem, 4vw, 3rem); } h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
p { margin-bottom: 1rem; } p:last-child { margin-bottom: 0; }
a { color: var(--black); text-decoration: none; border-bottom: var(--border); transition: opacity .2s ease; }
a:hover { opacity: .6; }
code, pre { font-family: var(--font-mono); }
code { font-size: .85em; padding: .1em .3em; background: var(--gray-100); border: var(--border); }

/* ── Background ── */
#bg-canvas { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: -1; pointer-events: none; }
.bg-grid { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: -1; pointer-events: none; background-image: linear-gradient(var(--gray-100) 1px, transparent 1px), linear-gradient(90deg, var(--gray-100) 1px, transparent 1px); background-size: 60px 60px; opacity: .4; }

/* ── Nav ── */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: var(--white); border-bottom: var(--border); transition: box-shadow .3s ease; }
.nav.scrolled { box-shadow: 0 2px 0 0 var(--black); }
.nav-inner { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; display: flex; align-items: center; justify-content: space-between; height: 64px; }
.nav-logo { font-family: var(--font-mono); font-weight: 700; font-size: 1.1rem; letter-spacing: -.02em; border: none; display: flex; align-items: center; gap: .5rem; }
.nav-logo:hover { opacity: .6; }
.nav-logo .logo-icon { width: 28px; height: 28px; border: var(--border-t); display: flex; align-items: center; justify-content: center; font-size: .65rem; font-weight: 900; line-height: 1; }
.nav-links { display: flex; align-items: center; gap: 0; list-style: none; height: 100%; }
.nav-links li { height: 100%; display: flex; align-items: center; }
.nav-links a { border: none; padding: 0 1.25rem; height: 100%; display: flex; align-items: center; font-size: .85rem; font-weight: 500; letter-spacing: .02em; text-transform: uppercase; position: relative; transition: background .2s ease; }
.nav-links a::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 0; background: var(--black); transition: height .2s ease; }
.nav-links a:hover { background: var(--gray-50); opacity: 1; }
.nav-links a:hover::after { height: 2px; }
.nav-links a.active { background: var(--black); color: var(--white); }
.menu-toggle { display: none; border: var(--border); background: none; width: 40px; height: 40px; cursor: pointer; align-items: center; justify-content: center; padding: 0; }
.menu-toggle span { display: block; width: 18px; height: 2px; background: var(--black); position: relative; }
.menu-toggle span::before, .menu-toggle span::after { content: ''; position: absolute; left: 0; width: 100%; height: 2px; background: var(--black); transition: transform .2s ease; }
.menu-toggle span::before { top: -6px; } .menu-toggle span::after { top: 6px; }
.menu-toggle.active span { background: transparent; }
.menu-toggle.active span::before { transform: translateY(6px) rotate(45deg); }
.menu-toggle.active span::after { transform: translateY(-6px) rotate(-45deg); }

/* ── Main ── */
.main { padding-top: 64px; min-height: 100vh; }

/* ── Section ── */
.section { max-width: var(--max-w); margin: 0 auto; padding: 6rem 2rem; }
.section-compact { padding: 0; }
.section-center { text-align: center; }
.section-header { margin-bottom: 4rem; max-width: 720px; }
.section-header h2 { margin-bottom: 1rem; display: inline-block; }
.section-header h2::before { content: ''; display: block; width: 40px; height: 3px; background: var(--black); margin-bottom: 1rem; }
.section-header p { font-size: 1.15rem; color: var(--gray-400); line-height: 1.7; }
.section-header.light p { color: var(--gray-300); }

/* ── Hero ── */
.hero { min-height: calc(100vh - 64px); display: flex; flex-direction: column; justify-content: center; padding: 4rem 2rem; max-width: var(--max-w); margin: 0 auto; position: relative; }
.hero-content { max-width: 900px; position: relative; z-index: 1; }
.hero-badge { display: inline-flex; align-items: center; gap: .5rem; border: var(--border); padding: .4rem 1rem; font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 2rem; background: var(--white); }
.hero-badge .dot { width: 6px; height: 6px; background: var(--black); animation: pulse-dot 1.5s ease-in-out infinite; }
@keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }
.hero-title { margin-bottom: 1.5rem; }
.hero-title .highlight { background: var(--black); color: var(--white); padding: 0 .15em; display: inline-block; }
.hero-subtitle { font-size: clamp(1.05rem, 2vw, 1.3rem); color: var(--gray-500); max-width: 680px; line-height: 1.7; margin-bottom: 1.5rem; }
.hero-banner { background: var(--black); color: var(--white); padding: .15em .5em; font-size: .85em; display: inline-block; margin-bottom: 2rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 3rem; }

/* ── Buttons ── */
.btn { display: inline-flex; align-items: center; gap: .5rem; padding: .85rem 1.75rem; font-family: var(--font-sans); font-size: .85rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; border: var(--border-t); cursor: pointer; transition: background .2s ease, color .2s ease; background: var(--white); color: var(--black); text-decoration: none; line-height: 1; }
.btn:hover { background: var(--black); color: var(--white); opacity: 1; }
.btn-primary { background: var(--black); color: var(--white); }
.btn-primary:hover { background: var(--white); color: var(--black); }
.btn-small { padding: .6rem 1.2rem; font-size: .75rem; }
.btn-icon { gap: .35rem; }
.btn .icon-arrow { transition: transform .2s ease; } .btn:hover .icon-arrow { transform: translateX(3px); }
.btn-outline-light { border-color: var(--white); color: var(--white); background: transparent; }
.btn-outline-light:hover { background: var(--white); color: var(--black); }

/* ── Install Box ── */
.install-box { border: var(--border-t); padding: 1.25rem 1.5rem; display: inline-flex; align-items: center; gap: 1rem; background: var(--white); }
.install-label { font-size: .7rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--gray-400); flex-shrink: 0; }
.install-cmd { font-family: var(--font-mono); font-size: .9rem; font-weight: 500; background: var(--gray-50); padding: .45rem 1rem; border: var(--border); flex: 1; }
.install-copy { border: var(--border); background: var(--white); padding: .45rem .9rem; font-size: .7rem; font-weight: 600; text-transform: uppercase; cursor: pointer; transition: background .2s ease, color .2s ease; font-family: var(--font-sans); color: var(--black); flex-shrink: 0; }
.install-copy:hover { background: var(--black); color: var(--white); }

/* ── Badge New ── */
.badge-new { display: inline-flex; align-items: center; gap: .35rem; border: 1px solid var(--black); padding: .25rem .6rem; font-size: .6rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; margin-left: .75rem; vertical-align: middle; }
.badge-new-dot { width: 4px; height: 4px; background: var(--black); animation: pulse-dot 1.2s ease-in-out infinite; }

/* ── Dual CTA ── */
.dual-cta { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2rem; }
.cta-card { flex: 1; min-width: 220px; border: var(--border-t); padding: 1.5rem; text-align: center; background: var(--white); transition: transform .2s ease, box-shadow .2s ease; }
.cta-card:hover { transform: translate(-2px, -2px); box-shadow: 4px 4px 0 0 var(--black); }
.cta-icon { font-size: 1.4rem; font-family: var(--font-mono); font-weight: 700; width: 44px; height: 44px; border: 2px solid var(--black); display: flex; align-items: center; justify-content: center; margin: 0 auto .75rem; }
.cta-card h3 { font-size: .95rem; margin-bottom: .5rem; }
.cta-card p { font-size: .78rem; color: var(--gray-400); line-height: 1.6; margin-bottom: 1rem; }

/* ── Stats ── */
.stats-bar { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); border: var(--border-t); border-top: none; max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; }
.stat-item { padding: 1.5rem; text-align: center; border-right: var(--border); background: var(--white); }
.stat-item:last-child { border-right: none; }
.stat-num { font-family: var(--font-mono); font-size: 2rem; font-weight: 700; display: block; margin-bottom: .25rem; }
.stat-label { font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; color: var(--gray-400); font-weight: 600; }

/* ── Interface Grid ── */
.interface-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; border: var(--border-t); background: var(--black); }
.interface-card { background: var(--white); padding: 1.5rem; text-align: center; }
.interface-icon { width: 40px; height: 40px; border: var(--border-t); display: flex; align-items: center; justify-content: center; margin: 0 auto .75rem; font-family: var(--font-mono); font-size: 1rem; font-weight: 700; }
.interface-name { font-family: var(--font-mono); font-size: .8rem; font-weight: 700; margin-bottom: .5rem; }
.interface-card p { font-size: .82rem; color: var(--gray-400); line-height: 1.6; margin-bottom: 1rem; }

/* ── Feature Grid ── */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1px; border: var(--border-t); background: var(--black); }
.feature-card { background: var(--white); padding: 2.5rem 2rem; transition: transform .25s ease, box-shadow .25s ease; }
.feature-card:hover { transform: translate(-2px, -2px); box-shadow: 4px 4px 0 0 var(--black); }
.feature-card-highlight { background: var(--black); color: var(--white); }
.feature-card-highlight h3 { color: var(--white); }
.feature-card-highlight p { color: var(--gray-200); }
.feature-icon, .icon { width: 40px; height: 40px; border: var(--border-t); display: flex; align-items: center; justify-content: center; margin-bottom: 1.25rem; }
.feature-card-highlight .feature-icon, .feature-card-highlight .icon { border-color: var(--white); }
.feature-card h3 { font-size: 1rem; margin-bottom: .75rem; }
.feature-card p { font-size: .9rem; color: var(--gray-400); line-height: 1.7; }

/* ── Mode Grid (features page) ── */
.mode-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--black); border: var(--border-t); }
.mode-card { background: var(--white); padding: 2rem; text-align: center; }
.mode-name { font-family: var(--font-mono); font-weight: 700; margin-bottom: .75rem; }
.mode-desc { font-size: .85rem; color: var(--gray-400); line-height: 1.6; }

/* ── Two Column Layout ── */
.cols-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.cols-2-wide { display: grid; grid-template-columns: 1.5fr 1fr; gap: 2rem; }

/* ── Architecture Diagram ── */
.arch-diagram { font-family: var(--font-mono); font-size: .72rem; line-height: 1.4; padding: 1.5rem; border: var(--border-t); background: var(--black); color: var(--white); overflow-x: auto; white-space: pre; }
.arch-diagram strong { color: var(--gray-200); }

/* ── Provider Grid ── */
.provider-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--black); border: var(--border-t); }
.provider-card { background: var(--white); padding: 2rem; text-align: center; }
.provider-name { font-family: var(--font-mono); font-size: 1.1rem; font-weight: 700; margin-bottom: .5rem; }
.provider-tier { font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; color: var(--gray-400); font-weight: 600; margin-bottom: 1rem; padding-bottom: 1rem; border-bottom: var(--border); }
.provider-desc { font-size: .82rem; color: var(--gray-400); line-height: 1.6; margin-bottom: 1.25rem; }
.provider-link { font-size: .8rem; border: var(--border); padding: .4rem .9rem; display: inline-block; transition: background .2s ease, color .2s ease; }
.provider-link:hover { background: var(--black); color: var(--white); opacity: 1; }

/* ── Terminal Demo ── */
.terminal-demo { border: var(--border-t); background: var(--black); max-width: 800px; margin: 0 auto; overflow: hidden; }
.terminal-header { background: var(--white); padding: .6rem 1rem; display: flex; align-items: center; justify-content: space-between; border-bottom: var(--border-t); }
.term-title { font-family: var(--font-mono); font-size: .72rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.term-dots { display: flex; gap: 5px; }
.term-dots span { width: 10px; height: 10px; border: var(--border); display: block; }
.terminal-body { padding: 1.5rem; min-height: 320px; max-height: 480px; overflow-y: auto; font-family: var(--font-mono); font-size: .78rem; line-height: 1.6; color: var(--gray-200); background: var(--black); }
.term-line { white-space: pre-wrap; word-break: break-word; min-height: 1.2em; }
.term-line.prompt { color: var(--white); } .term-line.prompt::before { content: '$ '; color: var(--gray-400); }
.term-line.output { color: var(--gray-200); } .term-line.output-em { color: var(--white); font-weight: 600; }
.term-line.output-dim { color: var(--gray-300); }
.term-cursor { display: inline-block; width: 7px; height: 14px; background: var(--white); animation: term-blink .8s step-end infinite; vertical-align: text-bottom; margin-left: 2px; }
@keyframes term-blink { 50% { opacity: 0; } }

/* ── Quick Start / Info Box ── */
.quick-start-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.info-box { border: var(--border-t); padding: 2rem; background: var(--white); }
.info-box-title { font-size: 1rem; margin-bottom: 1rem; }
.info-box ul { list-style: none; padding: 0; }
.info-box ul li { padding: .5rem 0; border-bottom: var(--border); font-size: .85rem; line-height: 1.6; }
.info-box ul li:last-child { border-bottom: none; }
.info-box h3 { font-size: .95rem; margin-bottom: .75rem; }
.info-box code { font-size: .78rem; }

.step-list { list-style: none; padding: 0; }
.step-item { padding: .6rem 0; border-bottom: var(--border); display: flex; gap: .75rem; align-items: flex-start; }
.step-item:last-child { border-bottom: none; }
.step-num { font-weight: 700; font-family: var(--font-mono); font-size: .75rem; min-width: 24px; flex-shrink: 0; }
.step-item strong { display: block; }
.step-item code, .step-link { font-size: .78rem; }
.step-link { font-family: var(--font-mono); color: var(--black); }

.cmd-list { max-width: 100%; }
.cmd-step { display: flex; align-items: flex-start; gap: 1rem; margin-bottom: 1rem; }
.cmd-step:last-child { margin-bottom: 0; }
.cmd-num { font-family: var(--font-mono); font-size: .75rem; font-weight: 700; min-width: 26px; height: 26px; border: var(--border); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.cmd-body { flex: 1; }
.cmd-text { font-family: var(--font-mono); font-size: .78rem; padding: .35rem 0; border-bottom: var(--border); margin-bottom: .25rem; }
.cmd-desc { font-size: .78rem; color: var(--gray-400); }

/* ── CTA ── */
.cta-heading { margin-bottom: 1.5rem; color: var(--white); }
.cta-text { color: var(--gray-300); margin-bottom: 2rem; font-size: 1.05rem; max-width: 500px; margin-left: auto; margin-right: auto; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }

/* ── Dark Section ── */
.section-dark { background: var(--black); color: var(--white); padding: 6rem 2rem; }
.section-dark .section-header h2::before { background: var(--white); }
.section-dark .section-header p { color: var(--gray-300); }

/* ── Footer ── */
.footer { border-top: var(--border-t); padding: 4rem 2rem; margin-top: 4rem; }
.footer-inner { max-width: var(--max-w); margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; }
.footer-logo, .footer .logo-icon { width: 32px; height: 32px; border: var(--border-t); display: flex; align-items: center; justify-content: center; font-size: .7rem; font-weight: 900; margin-bottom: 1rem; font-family: var(--font-mono); }
.footer-brand p { font-size: .85rem; color: var(--gray-400); max-width: 280px; line-height: 1.7; }
.footer-col h4 { font-size: .7rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 1.25rem; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: .6rem; }
.footer-col ul li a { font-size: .85rem; border: none; color: var(--gray-400); transition: color .2s ease; }
.footer-col ul li a:hover { color: var(--black); opacity: 1; }
.footer-bottom { max-width: var(--max-w); margin: 0 auto; padding-top: 2rem; margin-top: 2rem; border-top: var(--border); display: flex; justify-content: space-between; align-items: center; font-size: .75rem; color: var(--gray-300); }

/* ── Tables ── */
.table-wrap { overflow-x: auto; border: var(--border-t); }
table { width: 100%; border-collapse: collapse; font-size: .85rem; }
thead th { background: var(--black); color: var(--white); padding: 1rem 1.25rem; text-align: left; font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; border-bottom: var(--border-t); }
tbody td { padding: .9rem 1.25rem; border-bottom: var(--border); vertical-align: top; line-height: 1.5; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--gray-50); }

/* ── Details / Accordion ── */
details { border: var(--border); margin-bottom: .75rem; }
details:last-child { margin-bottom: 0; }
details summary { padding: 1rem 1.25rem; font-weight: 600; font-size: .9rem; cursor: pointer; user-select: none; list-style: none; display: flex; align-items: center; justify-content: space-between; transition: background .2s ease; }
details summary::-webkit-details-marker { display: none; }
details summary:hover { background: var(--gray-50); }
details summary::after { content: '+'; font-size: 1.1rem; font-weight: 400; font-family: var(--font-mono); }
details[open] summary::after { content: '-'; }
details .details-content { padding: 1rem 1.25rem 1.25rem; border-top: var(--border); }

/* ── Code Block ── */
.code-block { border: var(--border-t); margin-bottom: 1.5rem; }
.code-block:last-child { margin-bottom: 0; }
.code-block .code-header { background: var(--black); color: var(--white); padding: .65rem 1.25rem; font-size: .7rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; display: flex; justify-content: space-between; align-items: center; }
.code-block pre { border: none; margin: 0; background: var(--black); color: var(--white); padding: 1.5rem; overflow-x: auto; font-size: .85rem; line-height: 1.5; }
.code-block pre code { background: none; border: none; padding: 0; font-size: inherit; }

/* ── Page Header ── */
.page-header { padding: 5rem 2rem 3rem; border-bottom: var(--border-t); background: var(--gray-50); }
.page-header-inner { max-width: var(--max-w); margin: 0 auto; }
.page-header h1 { margin-bottom: .75rem; }
.page-header p { font-size: 1.1rem; color: var(--gray-400); max-width: 600px; line-height: 1.7; }
.page-header .breadcrumb { display: flex; gap: .5rem; margin-bottom: 1.5rem; font-size: .75rem; font-weight: 500; text-transform: uppercase; letter-spacing: .04em; }
.page-header .breadcrumb a { border: none; color: var(--gray-300); }
.page-header .breadcrumb a:hover { color: var(--black); opacity: 1; }
.page-header .breadcrumb .sep { color: var(--gray-300); }

/* ─── Animations ── */
.animate-in { opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s ease; }
.animate-in.visible { opacity: 1; transform: translateY(0); }
.animate-in-delay-1 { transition-delay: .1s; } .animate-in-delay-2 { transition-delay: .2s; }
.animate-in-delay-3 { transition-delay: .3s; } .animate-in-delay-4 { transition-delay: .4s; } .animate-in-delay-5 { transition-delay: .5s; }
.typing-line { overflow: hidden; white-space: nowrap; border-right: 2px solid var(--black); animation: typing 2s steps(40) forwards, blink-caret .8s step-end infinite; max-width: fit-content; }
@keyframes typing { from { width: 0; } to { width: 100%; } }
@keyframes blink-caret { 50% { border-color: transparent; } }

/* ── Tags ── */
.tag-list { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1rem 0; }
.tag { border: var(--border); padding: .25rem .7rem; font-size: .72rem; font-family: var(--font-mono); }

/* ── Badge ── */
.badge-row { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2rem; }
.badge { display: inline-flex; align-items: center; padding: .3rem .8rem; border: var(--border); font-size: .72rem; font-weight: 500; font-family: var(--font-mono); background: var(--white); color: var(--black); }
.badge-dark { background: var(--black); color: var(--white); border-color: var(--white); }

/* ─── Responsive ── */
@media (max-width: 900px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .provider-grid { grid-template-columns: 1fr; }
  .mode-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: 1fr; }
  .interface-grid { grid-template-columns: 1fr; }
  .quick-start-2col { grid-template-columns: 1fr; }
  .cols-2 { grid-template-columns: 1fr; }
  .cols-2-wide { grid-template-columns: 1fr; }
  .dual-cta { flex-direction: column; }
  .cta-card { min-width: auto; }
}

@media (max-width: 768px) {
  .nav-links { position: fixed; top: 64px; left: 0; right: 0; background: var(--white); flex-direction: column; border-bottom: var(--border-t); height: auto; transform: translateY(-100%); opacity: 0; transition: transform .3s ease, opacity .3s ease; pointer-events: none; }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: all; }
  .nav-links li { height: auto; width: 100%; }
  .nav-links a { padding: 1rem 2rem; border-bottom: var(--border); width: 100%; }
  .nav-links a::after { display: none; }
  .menu-toggle { display: flex; }
  .section { padding: 4rem 1.5rem; }
  .hero { padding: 3rem 1.5rem; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .install-box { flex-direction: column; align-items: stretch; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: .5rem; text-align: center; }
  .page-header { padding: 3rem 1.5rem; }
  .section-dark { padding: 4rem 1.5rem; }
  .cta-actions { flex-direction: column; align-items: center; }
}

/* ── Utilities ── */
.main-no-pad { padding-top: 0; }
.about-text-block p { font-size: 1.05rem; line-height: 1.8; color: var(--gray-500); }

/* ── Utility Extras ── */
.info-box-full { height: 100%; }
.info-box-medium { max-width: 500px; }
.info-box-mb { margin-bottom: 1.5rem; }
.code-block-narrow { max-width: 720px; margin: 0 auto; }
.section-compact-center { padding: 0; text-align: center; }
.about-margin-top { margin-top: 1rem; }
.badge-sm { font-size: .72rem; }


/* ── Web Chat Dark Section ── */
.webchat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 1px solid var(--white); }
.webchat-cell { padding: 2rem; border-bottom: 1px solid var(--white); }
.webchat-cell:nth-child(5), .webchat-cell:nth-child(6) { border-bottom: none; }
.webchat-label { font-family: var(--font-mono); font-weight: 700; margin-bottom: .75rem; color: var(--white); }
.webchat-desc { color: var(--gray-300); font-size: .85rem; line-height: 1.7; }
.webchat-desc code { background: var(--gray-500); color: var(--gray-100); }
.webchat-cta { text-align: center; padding-top: 3rem; }
.webchat-cta .btn + .btn { margin-left: .5rem; }

@media (max-width: 768px) {
  .webchat-grid { grid-template-columns: 1fr; }
  .webchat-cell { border-bottom: 1px solid var(--white); }
  .webchat-cell:last-child { border-bottom: none; }
}

/* ── Logo Images ── */
.nav-logo .logo-icon img { width: 100%; height: 100%; object-fit: contain; display: block; }
.footer .logo-icon img, .footer-logo img { width: 100%; height: 100%; object-fit: contain; display: block; }