/* PK Laptops — site styles */

:root {
  --paper: #FFFFFF;
  --paper-2: #F4F4F4;
  --ink: #0A0A0A;
  --body: #2E2E2E;
  --mute: #6B6B6B;
  --line: #E6E6E6;
  --gray: #A3A3A3;
  --highlight: #E8E8E8;
  --serif: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --sans: 'Geist', ui-sans-serif, system-ui, 'Segoe UI', Arial, sans-serif;
  --mono: 'Geist Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  --shadow: 0 1px 2px rgba(0, 0, 0, .05), 0 18px 40px -16px rgba(0, 0, 0, .18);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--body);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { color: var(--ink); margin: 0; line-height: 1.1; font-weight: 400; }
h1 em, h2 em { font-style: italic; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
svg { flex-shrink: 0; }

:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 6px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.skip {
  position: absolute; left: 16px; top: -48px; z-index: 100;
  background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 8px;
}
.skip:focus { top: 12px; }

.wrap { max-width: 1160px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }

.label {
  font-family: var(--mono); font-size: 12px; font-weight: 500;
  letter-spacing: .12em; text-transform: uppercase; color: var(--ink);
}
.label-light { color: var(--gray); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 46px; padding: 0 22px; border-radius: 999px; border: 1px solid transparent;
  font: inherit; font-weight: 500; font-size: 15px; cursor: pointer; white-space: nowrap;
  transition: background-color .2s, border-color .2s, color .2s, transform .2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #333; }
.btn-outline { height: 40px; padding: 0 18px; border-color: var(--ink); color: var(--ink); font-size: 14px; }
.btn-outline:hover { background: var(--ink); color: var(--paper); }
.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { background: var(--paper-2); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 40px; height: 68px; }

.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); }
.logo-mark {
  display: grid; place-items: center; width: 32px; height: 32px; border-radius: 9px;
  background: var(--ink); color: #fff;
}
.logo-text { font-weight: 600; font-size: 19px; letter-spacing: -0.03em; }
.logo-text em { font-family: var(--serif); font-weight: 400; font-size: 22px; letter-spacing: 0; margin-left: 1px; }

.nav { display: flex; gap: 30px; font-size: 15px; color: var(--mute); }
.nav a { position: relative; }
.nav a::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -4px; height: 1px;
  background: var(--ink); transform: scaleX(0); transform-origin: left; transition: transform .25s;
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after { transform: scaleX(1); }
.header-cta { margin-left: auto; }

.mobile-nav { display: none; margin-left: auto; position: relative; }
.mobile-nav summary {
  list-style: none; cursor: pointer; display: grid; place-items: center;
  width: 42px; height: 42px; border-radius: 999px; color: var(--ink); border: 1px solid var(--line);
}
.mobile-nav summary::-webkit-details-marker { display: none; }
.mobile-nav[open] summary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.mobile-nav nav {
  position: absolute; right: 0; top: 52px; width: 230px; padding: 8px;
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow);
}
.mobile-nav nav a { padding: 11px 14px; border-radius: 10px; color: var(--ink); }
.mobile-nav nav a:hover { background: var(--paper); }

/* Hero */
.hero { position: relative; overflow: hidden; }
.hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(0, 0, 0, .09) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: radial-gradient(ellipse 60% 70% at 78% 45%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 60% 70% at 78% 45%, #000 20%, transparent 75%);
}
.hero-grid {
  position: relative;
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
  padding-top: 84px; padding-bottom: 96px;
}

.kicker { display: inline-flex; align-items: center; gap: 10px; font-size: 14px; color: var(--mute); }
.pulse { position: relative; width: 8px; height: 8px; border-radius: 50%; background: var(--ink); }
.pulse::after {
  content: ''; position: absolute; inset: -4px; border-radius: 50%;
  border: 1px solid var(--ink); animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse { from { opacity: .8; transform: scale(.6); } to { opacity: 0; transform: scale(1.8); } }

.hero h1 {
  margin-top: 22px;
  font-family: var(--serif); font-size: clamp(44px, 6vw, 78px); line-height: .98; letter-spacing: -0.02em;
}
.hero h1 em { display: block; }
.mark {
  background: linear-gradient(transparent 62%, var(--highlight) 62%, var(--highlight) 92%, transparent 92%);
  -webkit-box-decoration-break: clone; box-decoration-break: clone; padding: 0 .06em;
}
.lead { margin-top: 26px; max-width: 30em; font-size: 18px; color: var(--mute); }

.search {
  position: relative; display: flex; gap: 8px; margin-top: 34px; max-width: 480px;
  padding: 6px; background: #fff; border: 1px solid var(--line); border-radius: 999px; box-shadow: var(--shadow);
  transition: border-color .2s, box-shadow .2s;
}
.search:focus-within { border-color: var(--ink); box-shadow: 0 0 0 4px rgba(0, 0, 0, .08), var(--shadow); }
.search-icon { position: absolute; left: 22px; top: 50%; transform: translateY(-50%); color: var(--mute); pointer-events: none; }
.search input {
  flex: 1; min-width: 0; border: 0; outline: 0; background: transparent;
  padding: 0 8px 0 44px; font: inherit; font-size: 16px; color: var(--ink);
}
.search input::placeholder { color: #9A9A9A; }

.popular { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 18px; font-size: 14px; }
.popular span { font-family: var(--mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--mute); margin-right: 4px; }
.popular a { padding: 4px 12px; border: 1px solid var(--line); border-radius: 999px; color: var(--ink); background: rgba(255,255,255,.6); }
.popular a:hover { border-color: var(--ink); }

/* Hero visual */
.hero-visual { position: relative; padding: 40px 20px 30px; }
.laptop { position: relative; transform: perspective(1600px) rotateY(-8deg) rotateX(3deg); transform-origin: center; }
.screen {
  background: #fff; border: 10px solid var(--ink); border-bottom-width: 14px;
  border-radius: 18px 18px 6px 6px; overflow: hidden; box-shadow: var(--shadow);
}
.screen-bar {
  display: flex; align-items: center; gap: 6px; padding: 9px 12px;
  background: var(--paper-2); border-bottom: 1px solid var(--line);
}
.screen-bar i { width: 8px; height: 8px; border-radius: 50%; background: #D4D4D4; }
.screen-bar span { margin-left: 10px; font-family: var(--mono); font-size: 11px; color: var(--mute); }
.screen-body { padding: 20px 22px 22px; }

.vs { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 10px; }
.vs small { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; color: var(--mute); }
.vs strong { font-size: 15px; font-weight: 600; color: var(--ink); }
.vs > div:last-child { text-align: right; }
.vs-badge {
  display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%;
  background: var(--ink); color: #fff; font-family: var(--serif); font-style: italic; font-size: 17px;
}

.mini-specs { margin-top: 18px; border-top: 1px solid var(--line); }
.mini-specs .row {
  display: grid; grid-template-columns: 64px 1fr 1fr; gap: 10px; align-items: center;
  padding: 9px 8px; border-bottom: 1px solid var(--line); font-size: 12.5px;
}
.mini-specs .row span { font-family: var(--mono); font-size: 10.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--mute); }
.mini-specs .row b { font-weight: 500; color: var(--ink); }
.mini-specs .row b:last-child { text-align: right; }
.mini-specs .diff { background: var(--paper-2); box-shadow: inset 3px 0 0 var(--ink); }
.mini-specs .diff b { font-weight: 600; }
.mini-specs .row { animation: rise .6s cubic-bezier(.2, .8, .2, 1) both; }
.mini-specs .row:nth-child(2) { animation-delay: .06s; }
.mini-specs .row:nth-child(3) { animation-delay: .12s; }
.mini-specs .row:nth-child(4) { animation-delay: .18s; }
.mini-specs .row:nth-child(5) { animation-delay: .24s; }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.mini-legend { display: flex; align-items: center; gap: 8px; margin-top: 14px; font-size: 11px; color: var(--mute); }
.mini-legend i { width: 12px; height: 12px; border-radius: 3px; background: var(--paper-2); box-shadow: inset 3px 0 0 var(--ink); }

.base {
  position: relative; height: 16px; margin: 0 -7%;
  background: linear-gradient(#2A2A2A, var(--ink)); border-radius: 2px 2px 14px 14px;
}
.base span { position: absolute; left: 50%; top: 0; width: 18%; height: 6px; transform: translateX(-50%); background: #3A3A3A; border-radius: 0 0 8px 8px; }

.float { position: absolute; box-shadow: var(--shadow); animation: bob 6s ease-in-out infinite; }
.tag-diff {
  top: 4px; right: -4px; padding: 12px 18px 12px 30px;
  background: var(--ink); color: #fff; border-radius: 6px 14px 14px 6px;
  transform: rotate(6deg);
  clip-path: polygon(14px 0, 100% 0, 100% 100%, 14px 100%, 0 50%);
}
.tag-hole { position: absolute; left: 13px; top: 50%; width: 7px; height: 7px; margin-top: -3.5px; border-radius: 50%; background: var(--paper); }
.tag-diff small { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; }
.tag-diff strong { font-family: var(--serif); font-size: 26px; font-weight: 400; line-height: 1.1; }

.tag-add {
  bottom: -18px; left: -8px; display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; background: #fff; border: 1px solid var(--line); border-radius: 14px;
  animation-delay: -3s;
}
.add-icon {
  display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%;
  border: 1.5px dashed var(--ink); font-size: 18px; line-height: 1; color: var(--ink);
}
.tag-add strong { display: block; font-size: 14px; font-weight: 600; color: var(--ink); }
.tag-add small { font-size: 12px; color: var(--mute); }

@keyframes bob { 0%, 100% { translate: 0 0; } 50% { translate: 0 -8px; } }

/* Ticker */
.ticker { overflow: hidden; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); background: var(--ink); color: var(--paper); }
.ticker-track { display: flex; width: max-content; animation: scroll 45s linear infinite; }
.ticker span { padding: 14px 0; font-family: var(--serif); font-size: 22px; font-style: italic; white-space: nowrap; }
.ticker span::after { content: '✦'; margin: 0 28px; font-style: normal; font-size: 12px; color: var(--gray); vertical-align: 4px; }
@keyframes scroll { to { transform: translateX(-50%); } }

/* Sections */
.section { padding: 112px 0; }
.section-head { max-width: 620px; margin-bottom: 56px; }
.section-head h2, .dark-section h2 {
  margin-top: 14px; font-family: var(--serif); font-size: clamp(38px, 4.6vw, 58px); letter-spacing: -0.015em;
}
.section-head h2 em { color: var(--mute); }
.section-sub { margin-top: 18px; font-size: 17px; color: var(--mute); }

/* Steps */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.step { position: relative; padding-top: 28px; border-top: 1px solid var(--ink); }
.step-num { font-family: var(--mono); font-size: 13px; color: var(--mute); }
.step h3 { margin-top: 36px; font-family: var(--serif); font-size: 40px; }
.step p { margin-top: 14px; color: var(--mute); max-width: 32ch; }
.step::before {
  content: ''; position: absolute; top: -1px; left: 0; width: 0; height: 3px; background: var(--ink);
  transition: width .5s cubic-bezier(.2, .8, .2, 1);
}
.step:hover::before { width: 100%; }

/* Directory (dark) */
.dark-section { background: var(--ink); color: rgba(255, 255, 255, .7); padding: 112px 0; }
.dark-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 48px; }
.dark-section h2 { color: #fff; }
.dark-section h2 em { color: var(--gray); }
.dark-intro { max-width: 26em; font-size: 17px; }

.brands {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, .16); border-left: 1px solid rgba(255, 255, 255, .16);
}
.brand {
  position: relative; display: flex; align-items: center; justify-content: space-between;
  padding: 34px 28px; border-right: 1px solid rgba(255, 255, 255, .16); border-bottom: 1px solid rgba(255, 255, 255, .16);
  font-family: var(--serif); font-size: clamp(28px, 3vw, 38px); color: #fff;
  transition: background-color .25s, color .25s;
}
.brand span { font-family: var(--sans); font-size: 18px; opacity: 0; transform: translateX(-8px); transition: opacity .25s, transform .25s; }
.brand:hover { background: #fff; color: var(--ink); }
.brand:hover span { opacity: 1; transform: none; }

.by-type { display: flex; align-items: center; flex-wrap: wrap; gap: 16px 24px; margin-top: 40px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips a {
  padding: 8px 16px; border: 1px solid rgba(255, 255, 255, .25); border-radius: 999px;
  font-size: 14px; color: #fff; transition: background-color .2s, color .2s, border-color .2s;
}
.chips a:hover { background: #fff; border-color: #fff; color: var(--ink); }

/* Specs datasheet */
.specs-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: start; }
.specs-grid .section-head { margin-bottom: 0; position: sticky; top: 120px; }
.datasheet { margin: 0; border-top: 1px solid var(--ink); }
.datasheet > div {
  display: flex; align-items: baseline; justify-content: space-between; gap: 24px;
  padding: 18px 4px; border-bottom: 1px solid var(--line); transition: padding .25s;
}
.datasheet > div:hover { padding-left: 14px; }
.datasheet dt { display: flex; align-items: baseline; gap: 18px; font-family: var(--serif); font-size: 28px; color: var(--ink); }
.datasheet dt span { font-family: var(--mono); font-size: 12px; color: var(--mute); }
.datasheet dd { margin: 0; font-size: 14px; color: var(--mute); text-align: right; }

/* CTA */
.cta {
  display: flex; align-items: center; justify-content: space-between; gap: 32px;
  margin-bottom: 112px; padding: 52px 56px; border-radius: 28px; background: var(--ink); color: rgba(255, 255, 255, .7);
  position: relative; overflow: hidden;
}
.cta::before {
  content: ''; position: absolute; right: -80px; top: -80px; width: 280px; height: 280px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .18); box-shadow: 0 0 0 40px rgba(255, 255, 255, .03), 0 0 0 80px rgba(255, 255, 255, .02);
}
.cta-copy { position: relative; }
.cta h2 { color: #fff; font-family: var(--serif); font-size: clamp(30px, 3.4vw, 42px); }
.cta p { margin-top: 10px; }
.cta .btn { position: relative; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding-top: 64px; }
.footer-brand p { max-width: 320px; font-family: var(--serif); font-size: 26px; line-height: 1.2; color: var(--ink); }
.footer-mail { display: inline-block; margin-top: 18px; color: var(--ink); border-bottom: 1px solid currentColor; }
.site-footer h4 { font-family: var(--mono); font-size: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: .12em; color: var(--mute); }
.site-footer ul { list-style: none; margin: 16px 0 0; padding: 0; display: grid; gap: 10px; }
.site-footer ul a { color: var(--ink); }
.site-footer ul a:hover { color: var(--mute); }

.wordmark {
  margin: 48px 0 0; padding-bottom: .08em; font-weight: 600; font-size: clamp(64px, 16vw, 220px); line-height: 1; letter-spacing: -0.06em;
  color: transparent; -webkit-text-stroke: 1px #D4D4D4; user-select: none;
}
.wordmark em { font-family: var(--serif); font-weight: 400; letter-spacing: -0.02em; }

.footer-bottom {
  display: flex; justify-content: space-between; gap: 24px;
  padding-top: 24px; padding-bottom: 32px; border-top: 1px solid var(--line);
  color: var(--mute); font-size: 13px;
}
.footer-bottom p:last-child { max-width: 520px; text-align: right; }

/* Responsive */
@media (max-width: 980px) {
  .hero-grid, .specs-grid { grid-template-columns: minmax(0, 1fr); gap: 56px; }
  .specs-grid .section-head { position: static; }
  .dark-head { flex-direction: column; align-items: flex-start; gap: 16px; }
  .brands { grid-template-columns: repeat(2, 1fr); }
  .hero-grid { padding-top: 56px; padding-bottom: 72px; }
  .hero-visual { max-width: 560px; }
  .steps { grid-template-columns: 1fr; gap: 32px; }
  .step h3 { margin-top: 16px; }
  .section, .dark-section { padding: 80px 0; }
  .cta { margin-bottom: 80px; }
}

@media (max-width: 760px) {
  .nav, .header-cta { display: none; }
  .mobile-nav { display: block; }
  .cta { flex-direction: column; align-items: flex-start; padding: 36px 28px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
  .footer-bottom p:last-child { text-align: left; }
}

@media (max-width: 480px) {
  .wrap { padding-left: 16px; padding-right: 16px; }
  .hero-visual { padding: 36px 0 40px; }
  .laptop { transform: none; }
  .screen-body { padding: 16px; }
  .mini-specs .row { grid-template-columns: 54px 1fr 1fr; font-size: 11.5px; padding: 8px 6px; }
  .brand { padding: 24px 18px; }
  .datasheet dt { font-size: 24px; }
  .datasheet > div { flex-direction: column; gap: 2px; }
  .datasheet dd { text-align: left; padding-left: 34px; }
  .tag-diff { right: -6px; top: 0; padding: 8px 14px 8px 26px; }
  .tag-diff strong { font-size: 20px; }
  .tag-add { left: 0; bottom: -4px; }
  .search .btn { padding: 0 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}