:root {
  --ink: #0d1f26;
  --ink-soft: #18333b;
  --paper: #f7f8ed;
  --card: #ffffff;
  --lime: #8ee000;
  --lime-light: #c8ff6a;
  --mint: #78d9b2;
  --orange: #ff944d;
  --line: rgba(13, 31, 38, .13);
  --text-soft: #4d676f;
  --surface: rgba(255,255,255,.78);
  --surface-solid: #fff;
  --header: rgba(247, 248, 237, .84);
  --dark-panel: #0d1f26;
  --dark-panel-hover: #18333b;
  --on-dark: #fff;
  --accent-ink: #0d1f26;
  --hero-secondary: #5c7b83;
  --shadow: 0 24px 70px rgba(13, 31, 38, .14);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ink: #edf7f8;
  --ink-soft: #d6e8eb;
  --paper: #0b1b21;
  --card: #142a32;
  --line: rgba(218, 238, 241, .14);
  --text-soft: #9eb4ba;
  --surface: rgba(20,42,50,.88);
  --surface-solid: #142a32;
  --header: rgba(11,27,33,.86);
  --dark-panel: #17313a;
  --dark-panel-hover: #244750;
  --on-dark: #f4fbfc;
  --accent-ink: #0d1f26;
  --hero-secondary: #a6c5cb;
  --shadow: 0 24px 70px rgba(0,0,0,.38);
}

* { box-sizing: border-box; }
body { margin: 0; overflow-x: hidden; background: var(--paper); }
section[id] { scroll-margin-top: 84px; }
a { color: inherit; }
img { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, select:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }

.noise { position: fixed; inset: 0; z-index: 20; pointer-events: none; opacity: .035; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E"); }
.section-shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }

.site-header { position: sticky; top: 0; z-index: 15; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; width: 100%; padding: 14px max(20px, calc((100vw - 1180px) / 2)); border-bottom: 1px solid var(--line); background: var(--header); backdrop-filter: blur(18px); }
.brand { display: inline-flex; align-items: center; gap: 10px; width: fit-content; font-weight: 900; text-decoration: none; letter-spacing: -.03em; }
.brand img { width: 38px; height: 38px; border-radius: 11px; box-shadow: 0 7px 18px rgba(78, 155, 0, .25); }
.site-header nav { display: flex; gap: 28px; }
.site-header nav a { position: relative; color: var(--text-soft); font-size: 14px; font-weight: 700; text-decoration: none; }
.site-header nav a::after { content: ""; position: absolute; right: 0; bottom: -6px; left: 0; height: 2px; background: var(--lime); transform: scaleX(0); transition: transform .25s ease; }
.site-header nav a:hover::after { transform: scaleX(1); }
.header-cta { justify-self: end; padding: 9px 16px; border-radius: 999px; background: var(--dark-panel); color: var(--on-dark); font-size: 13px; font-weight: 800; text-decoration: none; transition: transform .2s ease, background .2s ease; }
.header-cta:hover { transform: translateY(-2px); background: var(--dark-panel-hover); }
.header-actions { justify-self:end; display:flex; align-items:center; gap:8px; }
.header-actions select,.theme-toggle { height:36px; border:1px solid var(--line); border-radius:10px; background:var(--surface-solid); color:var(--ink); font-weight:850; }
.header-actions select { padding:0 8px; }
.theme-toggle { width:36px; padding:0; cursor:pointer; font-size:18px; transition:transform .25s ease,background .25s ease; }
.theme-toggle:hover { transform:rotate(18deg); background:var(--lime-light); color:#0d1f26; }

.hero { min-height: 740px; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 70px; padding-block: 86px 74px; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--text-soft); font-size: 12px; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 0 6px rgba(142, 224, 0, .15); animation: pulse 2s infinite; }
.hero h1 { margin: 20px 0 24px; font-size: clamp(62px, 7.2vw, 108px); line-height: .86; letter-spacing: -.075em; }
.hero h1 span { color: var(--hero-secondary); }
.hero-copy > p { max-width: 600px; margin: 0; color: var(--text-soft); font-size: 18px; line-height: 1.65; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 52px; padding: 0 22px; border: 1px solid var(--ink); border-radius: 14px; font-size: 14px; font-weight: 900; text-decoration: none; box-shadow: 0 8px 0 transparent; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-3px); }
.button.primary { background: var(--lime); color: var(--accent-ink); box-shadow: 0 8px 20px rgba(115, 190, 0, .22); }
.button.primary:hover { box-shadow: 0 11px 26px rgba(115, 190, 0, .3); }
.button.secondary { background: var(--surface-solid); border-color: var(--line); }
.browser-logo { width: 23px; height: 23px; object-fit: contain; }
.hero-copy .microcopy { margin-top: 18px; font-size: 11px; letter-spacing: .04em; }

.hero-visual { position: relative; min-height: 560px; display: grid; place-items: center; isolation: isolate; }
.hero-visual::before { content: ""; position: absolute; width: 440px; height: 440px; border-radius: 50%; background: var(--lime-light); filter: blur(1px); opacity: .48; z-index: -2; }
.orbit { position: absolute; width: 490px; height: 490px; border: 1px solid rgba(13, 31, 38, .12); border-radius: 50%; z-index: -1; animation: rotate 18s linear infinite; }
.orbit::after { content: ""; position: absolute; top: 38px; left: 62px; width: 12px; height: 12px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 9px rgba(255, 148, 77, .15); }
.orbit-two { width: 550px; height: 550px; animation-duration: 25s; animation-direction: reverse; }
.orbit-two::after { top: auto; right: 90px; bottom: 37px; left: auto; background: var(--mint); }
.board-window { width: min(440px, 86vw); overflow: hidden; border: 1px solid rgba(255,255,255,.16); border-radius: 26px; background: var(--ink); box-shadow: 0 36px 80px rgba(13,31,38,.3); transform: rotate(2.5deg); transition: transform .5s cubic-bezier(.2,.8,.2,1); }
.hero-visual:hover .board-window { transform: rotate(0deg) translateY(-6px); }
.window-bar { display: flex; align-items: center; gap: 7px; height: 42px; padding: 0 15px; border-bottom: 1px solid rgba(255,255,255,.1); }
.window-bar > span { width: 8px; height: 8px; border-radius: 50%; background: #597078; }
.window-bar > span:first-child { background: var(--orange); }
.window-bar small { margin-left: auto; color: #799098; font-size: 10px; }
.demo-board { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); grid-template-rows: repeat(8, minmax(0, 1fr)); aspect-ratio: 1; padding: 14px; }
.square { display: grid; place-items: center; position: relative; min-width: 0; min-height: 0; background: #142b32; color: #ecf7f4; font-size: clamp(24px, 3vw, 42px); }
.square:nth-child(16n + 1),.square:nth-child(16n + 3),.square:nth-child(16n + 5),.square:nth-child(16n + 7),.square:nth-child(16n + 10),.square:nth-child(16n + 12),.square:nth-child(16n + 14),.square:nth-child(16n + 16) { background: #294049; }
.square.highlight { background: rgba(255, 227, 106, .42); box-shadow: inset 0 0 0 3px #ffe36a; }
.square.opponent-highlight { background: rgba(255, 148, 77, .35); box-shadow: inset 0 0 0 3px var(--orange); }
.square .moving { animation: piecePop .45s cubic-bezier(.2,1.6,.4,1); }
.move-pill { display: flex; align-items: center; justify-content: space-between; margin: 0 14px 14px; padding: 10px 14px; border-radius: 11px; background: #203840; color: white; font-size: 12px; }
.move-pill b { color: var(--lime-light); }
.floating-king { position: absolute; top: 4%; right: -1%; width: 86px; border-radius: 24px; filter: drop-shadow(0 18px 20px rgba(13,31,38,.25)); animation: float 4s ease-in-out infinite; }

.trust-strip { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 20px; min-height: 82px; padding: 20px; border-block: 1px solid var(--line); background: var(--surface); color: var(--text-soft); font-size: 12px; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.trust-strip i { width: 4px; height: 4px; border-radius: 50%; background: var(--lime); }

.features { padding-block: 110px 72px; }
.section-heading { display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: end; margin-bottom: 48px; }
.section-heading .eyebrow { grid-column: 1 / -1; }
.section-heading h2 { margin: 0; font-size: clamp(44px, 6vw, 78px); line-height: .96; letter-spacing: -.055em; }
.section-heading p { margin: 0; color: var(--text-soft); font-size: 17px; line-height: 1.6; }
.bento-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 16px; }
.feature-card { grid-column: span 4; min-height: 330px; position: relative; overflow: hidden; padding: 28px; border: 1px solid var(--line); border-radius: 24px; background: var(--surface); box-shadow: 0 9px 30px rgba(13,31,38,.04); transition: transform .3s ease, box-shadow .3s ease; }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.feature-wide { grid-column: span 8; display: grid; grid-template-columns: 1fr 230px; gap: 25px; background: var(--dark-panel); color: var(--on-dark); }
.feature-number { display: block; color: #7a9299; font: 800 11px/1 ui-monospace, monospace; letter-spacing: .08em; }
.feature-card h3 { margin: 30px 0 12px; font-size: 25px; line-height: 1.05; letter-spacing: -.035em; }
.feature-card p { margin: 0; color: var(--text-soft); font-size: 14px; line-height: 1.6; }
.feature-wide p { color: #a5b7bc; max-width: 520px; }
.mini-board { align-self: center; display: grid; grid-template-columns: repeat(4,1fr); overflow: hidden; border-radius: 15px; transform: rotate(4deg); box-shadow: 0 20px 35px rgba(0,0,0,.24); }
.mini-board span { display: grid; place-items: center; aspect-ratio: 1; background: #203942; color: white; font-size: 30px; }
.mini-board span:nth-child(8n+1),.mini-board span:nth-child(8n+3),.mini-board span:nth-child(8n+6),.mini-board span:nth-child(8n+8) { background: #36505a; }
.mini-board .hot { background: rgba(255,227,106,.45); box-shadow: inset 0 0 0 2px #ffe36a; }
.arrow-demo { height: 95px; position: relative; margin-top: 16px; }
.arrow-demo span { position: absolute; left: 0; bottom: 0; font-size: 43px; }
.arrow-demo svg { width: 100%; height: 100%; overflow: visible; }
.arrow-demo path { fill: none; stroke: #6dbb00; stroke-width: 7; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 260; animation: draw 3s ease-in-out infinite; }
.coordinates-demo { display: grid; grid-template-columns: repeat(4, 1fr); position: relative; width: 210px; height: 105px; margin: 18px 0 8px; border-left: 2px solid var(--ink); border-bottom: 2px solid var(--ink); background: repeating-conic-gradient(#dce8de 0 25%, white 0 50%) 0 0/52px 52px; }
.coordinates-demo span { align-self: end; transform: translateY(21px); text-align: center; font: 800 11px ui-monospace, monospace; }
.coordinates-demo b { position: absolute; left: -17px; font: 800 10px ui-monospace, monospace; }
.coordinates-demo b:nth-of-type(1) { top: 8px; }.coordinates-demo b:nth-of-type(2) { top: 45px; }.coordinates-demo b:nth-of-type(3) { top: 82px; }
.history-card { grid-column: span 5; background: color-mix(in srgb, var(--surface-solid) 86%, #8ee000 14%); }
.history-list { display: grid; gap: 8px; margin-top: 26px; }
.history-list > div { display: flex; align-items: center; gap: 12px; padding: 10px; border-radius: 12px; background: var(--surface-solid); }
.piece-icon { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; background: var(--dark-panel); color: var(--on-dark); font-size: 24px; }
.history-list p { color: var(--ink); font-weight: 850; }.history-list small { display: block; color: #6f858b; font-size: 9px; }
.words-card { grid-column: span 7; background: color-mix(in srgb, var(--surface-solid) 88%, #ff944d 12%); }
.word-swap { display: flex; align-items: center; gap: 16px; margin-top: 38px; font-size: clamp(27px,4vw,48px); letter-spacing: -.05em; }
.word-swap del { color: #9b8271; text-decoration-thickness: 3px; }.word-swap span { color: var(--orange); }.word-swap strong { color: var(--ink); }
.lock-demo { display: flex; align-items: center; gap: 15px; margin-top: 24px; font-size: 55px; }.lock-demo b { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 50%; background: var(--lime); color:var(--accent-ink); font-size: 18px; }

.install { padding-block: 72px 110px; }
.install .section-heading { grid-template-columns: 1fr; }
.install-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.install-card { padding: 34px; border: 1px solid var(--line); border-radius: 28px; background: var(--surface-solid); }
.install-title { display: flex; align-items: center; gap: 14px; }.install-title > span { display: grid; place-items: center; width: 48px; height: 48px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }.install-title img { width: 30px; height: 30px; object-fit: contain; }.install-title h3 { margin: 0; font-size: 24px; }
.install-card ol { list-style: none; margin: 30px 0; padding: 0; border-top: 1px solid var(--line); }
.install-card li { display: flex; align-items: center; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--line); color: var(--text-soft); font-size: 14px; }.install-card li b { color: #8aa000; font: 800 11px ui-monospace, monospace; }.install-card code { padding: 3px 6px; border-radius: 5px; background: color-mix(in srgb,var(--surface-solid) 75%,#8ee000 25%); color: var(--ink); }
.install-card > a { display: flex; justify-content: space-between; font-weight: 900; text-decoration: none; }.install-card > a span { transition: transform .2s ease; }.install-card > a:hover span { transform: translateY(4px); }

.privacy { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 34px; padding: 50px; border-radius: 32px; background: var(--dark-panel); color: var(--on-dark); box-shadow: var(--shadow); }
.privacy-mark { display: grid; place-items: center; width: 72px; height: 72px; border-radius: 22px; background: var(--lime); color: var(--accent-ink); font-size: 30px; font-weight: 900; transform: rotate(-6deg); }
.privacy .eyebrow { color: #9eb4ba; }.privacy h2 { margin: 10px 0 12px; font-size: clamp(32px,4vw,54px); letter-spacing: -.05em; }.privacy p { max-width: 670px; margin: 0; color: #9eb4ba; line-height: 1.65; }
.privacy-list { display: grid; gap: 8px; }.privacy-list span { padding: 9px 12px; border: 1px solid rgba(255,255,255,.13); border-radius: 999px; color: #c9d7da; font-size: 11px; text-align: center; }
.privacy-policy-link { display: inline-block; margin-top: 14px; color: var(--lime-light); font-weight: 800; }

.policy-page { min-height: 100vh; background: var(--paper); color: var(--ink); }
.policy-shell { width: min(100% - 36px, 880px); margin: 0 auto; padding: 72px 0 110px; }
.policy-back { display: inline-flex; margin-bottom: 34px; color: var(--text-soft); font-weight: 800; text-decoration: none; }
.policy-shell h1 { margin: 0 0 12px; font-size: clamp(42px, 7vw, 72px); letter-spacing: -.06em; }
.policy-updated { margin: 0 0 42px; color: var(--text-soft); }
.policy-language { margin-top: 22px; padding: 30px; border: 1px solid var(--line); border-radius: 24px; background: var(--surface); box-shadow: var(--shadow); }
.policy-language h2 { margin-top: 0; font-size: 28px; }
.policy-language h3 { margin: 26px 0 8px; font-size: 17px; }
.policy-language p,.policy-language li { color: var(--text-soft); line-height: 1.7; }
.policy-language a { color: var(--ink); font-weight: 800; }

.final-cta { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 28px; padding-block: 130px; }
.final-cta img { width: 96px; border-radius: 25px; animation: float 4s ease-in-out infinite; }.final-cta h2 { max-width: 720px; margin: 10px 0 0; font-size: clamp(38px,5vw,67px); line-height: .98; letter-spacing: -.055em; }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 24px max(20px, calc((100vw - 1180px)/2)); border-top: 1px solid var(--line); color: #63787e; font-size: 12px; }.site-footer .brand { color: var(--ink); }.site-footer .brand img { width: 32px; height: 32px; border-radius: 9px; }.site-footer > a:last-child { font-weight: 800; text-decoration: none; }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .75s ease, transform .75s cubic-bezier(.2,.8,.2,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }

@keyframes pulse { 50% { box-shadow: 0 0 0 11px rgba(142,224,0,0); } }
@keyframes rotate { to { transform: rotate(360deg); } }
@keyframes float { 50% { transform: translateY(-13px) rotate(2deg); } }
@keyframes piecePop { 0% { transform: scale(.4) rotate(-12deg); } 100% { transform: scale(1) rotate(0); } }
@keyframes draw { 0%,15% { stroke-dashoffset: 260; } 55%,100% { stroke-dashoffset: 0; } }

@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto; }.site-header nav { display: none; }
  .hero { grid-template-columns: 1fr; gap: 20px; padding-top: 70px; }.hero-visual { min-height: 520px; }.hero-copy { text-align: center; }.hero-copy > p { margin-inline: auto; }.hero-actions { justify-content: center; }
  .section-heading { grid-template-columns: 1fr; }.feature-card,.feature-wide,.history-card,.words-card { grid-column: span 12; }.feature-wide { grid-template-columns: 1fr 200px; }
  .privacy { grid-template-columns: auto 1fr; }.privacy-list { grid-column: 1 / -1; grid-template-columns: repeat(3,1fr); }
  .final-cta { grid-template-columns: auto 1fr; }.final-cta .button { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .section-shell { width: min(100% - 28px, 1180px); }.site-header { padding-inline: 14px; }.header-cta { display:none; }.header-actions{gap:5px}
  .hero { min-height: auto; padding-block: 62px; }.hero h1 { font-size: clamp(55px,19vw,78px); }.hero-copy > p { font-size: 16px; }.button { width: 100%; }.hero-visual { min-height: 440px; }.floating-king { width: 68px; right: 0; }.orbit { width: 390px; height: 390px; }.orbit-two { width: 430px; height: 430px; }
  .trust-strip { gap: 12px; }.features { padding-block: 72px 48px; }.install { padding-block: 48px 72px; }.section-heading h2 { font-size: 44px; }.bento-grid { gap: 12px; }.feature-card { min-height: 300px; padding: 23px; }.feature-wide { grid-template-columns: 1fr; }.mini-board { display: none; }
  .install-grid { grid-template-columns: 1fr; }.install-card { padding: 26px; }.privacy { grid-template-columns: 1fr; padding: 30px; }.privacy-list { grid-template-columns: 1fr; }.privacy-mark { width: 58px; height: 58px; }.final-cta { grid-template-columns: 1fr; padding-block: 90px; }.final-cta img { width: 76px; }.site-footer { flex-direction: column; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { scroll-behavior: auto !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}