/* ---------- fonts (self-hosted, IBM Plex) ---------- */
@font-face{font-family:"Plex";font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/ibm-plex-sans-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Plex";font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/ibm-plex-sans-latin-ext-400-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Plex";font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/ibm-plex-sans-latin-500-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Plex";font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/ibm-plex-sans-latin-ext-500-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Plex";font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/ibm-plex-sans-latin-600-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Plex";font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/ibm-plex-sans-latin-ext-600-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/ibm-plex-mono-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/ibm-plex-mono-latin-ext-400-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Plex Mono";font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/ibm-plex-mono-latin-500-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Plex Mono";font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/ibm-plex-mono-latin-ext-500-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

/* ---------- tokens ---------- */
:root{
  --paper:#f5f3ee;
  --paper-2:#ece9e1;
  --card:#fffdf9;
  --ink:#15171c;
  --ink-2:#3b3f49;
  --muted:#656b79;
  --line:#dcd8ce;
  --accent:#5a48e0;
  --accent-2:#7c6cff;
  --accent-soft:#e7e4fb;
  --signal:#e0632f;
  --ok:#1f8a4c;
  --err:#d04545;
  --night:#0f1115;
  --night-2:#161920;
  --night-3:#1d2129;
  --night-line:#2a2f39;
  --night-text:#c9cdd6;
  --night-muted:#8a90a0;
  --brand-ink:#f5f3ee;
  --radius:12px;
  --gut:clamp(16px,4vw,40px);
  --maxw:1200px;
  --sans:"Plex",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color-scheme:light;
}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.65 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,video{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3,h4{line-height:1.12;letter-spacing:-.02em;margin:0;font-weight:600;text-wrap:balance}
h1{font-size:clamp(2.2rem,5vw,4rem);letter-spacing:-.035em}
h2{font-size:clamp(1.75rem,3.4vw,2.6rem)}
h3{font-size:1.15rem;letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
code{font-family:var(--mono);font-size:.86em;background:var(--paper-2);border:1px solid var(--line);padding:.06em .38em;border-radius:5px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}
.narrow{max-width:820px}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:var(--paper);padding:8px 14px;border-radius:6px;z-index:200}
.skip:focus{left:8px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.eyebrow{font:500 .76rem/1 var(--mono);text-transform:uppercase;letter-spacing:.14em;color:var(--signal);margin:0 0 16px;display:flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor}
.lead{font-size:clamp(1.08rem,1.5vw,1.22rem);line-height:1.6;color:var(--ink-2);max-width:640px}
.sub{color:var(--muted);max-width:660px;margin-top:16px;font-size:1.06rem}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--ink);color:var(--paper);border:1px solid var(--ink);font:500 .98rem/1 var(--sans);padding:14px 20px;border-radius:9px;text-decoration:none;cursor:pointer;transition:transform .15s ease,background .15s ease,border-color .15s ease}
.btn:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.btn:active{transform:translateY(1px)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{background:var(--card);color:var(--ink);border-color:var(--ink)}
.btn--light{background:#fff;color:var(--night);border-color:#fff}
.btn--light:hover{background:var(--accent-2);border-color:var(--accent-2);color:#fff}
.btn--line{background:transparent;color:#fff;border-color:rgba(255,255,255,.28)}
.btn--line:hover{background:rgba(255,255,255,.08);border-color:#fff;color:#fff}
.btn--sm{padding:9px 14px;font-size:.92rem}
.btn[disabled]{opacity:.6;cursor:progress}
.link{color:var(--accent);font-weight:500;text-decoration:none;border-bottom:1px solid currentColor}
.link:hover{color:var(--ink)}
.icon-btn{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:var(--card);color:var(--ink);font-size:1.1rem;cursor:pointer;transition:border-color .15s}
.icon-btn:hover{border-color:var(--ink)}

/* ---------- header + menu ---------- */
.top{position:sticky;top:0;z-index:100;background:rgba(15,17,21,.86);backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid rgba(255,255,255,.07);color:#fff}
.top__in{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:600;font-size:1.08rem;text-decoration:none;letter-spacing:-.01em}
.brand__mark{width:28px;height:28px;color:#fff;--brand-ink:var(--night)}
.nav{display:flex;align-items:center;gap:22px}
.menu{list-style:none;margin:0;padding:0;display:flex;align-items:center;gap:4px}
.menu__item{position:relative;display:flex;align-items:center}
.menu__link{text-decoration:none;font-size:.95rem;color:rgba(255,255,255,.78);padding:10px 12px;border-radius:8px;transition:color .15s,background .15s}
.menu__link:hover,.menu__item:focus-within>.menu__link{color:#fff;background:rgba(255,255,255,.06)}
.menu__link[aria-current="page"]{color:#fff}
.menu__link[aria-current="page"]::after{content:"";display:block;height:2px;background:var(--signal);margin-top:4px;border-radius:2px}
.menu__toggle{display:none}
.menu__sub{list-style:none;margin:0;padding:8px;position:absolute;top:calc(100% + 6px);left:0;min-width:240px;background:var(--night-2);border:1px solid var(--night-line);border-radius:12px;box-shadow:0 24px 48px -20px rgba(0,0,0,.6);opacity:0;visibility:hidden;transform:translateY(-4px);transition:opacity .16s,transform .16s,visibility .16s}
.menu__sub::before{content:"";position:absolute;left:0;right:0;top:-10px;height:10px}
.menu__item--sub:hover .menu__sub,.menu__item--sub:focus-within .menu__sub{opacity:1;visibility:visible;transform:none}
.menu__sub a{display:block;padding:9px 12px;border-radius:8px;color:var(--night-text);text-decoration:none;font-size:.93rem}
.menu__sub a:hover{background:var(--night-3);color:#fff}
.nav__cta{background:#fff;color:var(--night);border-color:#fff}
.nav__cta:hover{background:var(--accent-2);border-color:var(--accent-2);color:#fff}
.burger{display:none;width:44px;height:44px;border:0;background:none;cursor:pointer;position:relative;color:#fff}
.burger span{position:absolute;left:11px;right:11px;height:2px;background:currentColor;transition:transform .2s}
.burger span:first-child{top:17px}.burger span:last-child{top:25px}
.burger[aria-expanded="true"] span:first-child{transform:translateY(4px) rotate(45deg)}
.burger[aria-expanded="true"] span:last-child{transform:translateY(-4px) rotate(-45deg)}

/* ---------- dark hero with network canvas ---------- */
.hero{position:relative;background:var(--night);color:#fff;overflow:hidden;isolation:isolate;margin-top:-69px;padding-top:69px}
.hero canvas.net{position:absolute;inset:0;width:100%;height:100%;z-index:-1}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(ellipse 70% 60% at 18% 45%,rgba(15,17,21,.92) 0%,rgba(15,17,21,.55) 55%,rgba(15,17,21,.15) 100%);pointer-events:none}
.hero__in{padding-block:clamp(72px,11vw,150px) clamp(64px,9vw,120px);position:relative}
.hero h1{max-width:900px}
.hero h1 em{font-style:normal;color:transparent;background:linear-gradient(90deg,#b7adff,#ff9f75);-webkit-background-clip:text;background-clip:text}
.hero .lead{color:var(--night-text);margin-top:26px;max-width:600px}
.hero .lead strong{color:#fff;font-weight:500}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.hero__facts{list-style:none;padding:0;margin:56px 0 0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;max-width:880px;border-top:1px solid rgba(255,255,255,.12)}
.hero__facts li{padding:18px 18px 0 0;color:var(--night-muted);font-size:.9rem;line-height:1.45}
.hero__facts li + li{padding-left:18px;border-left:1px solid rgba(255,255,255,.12)}
.hero__facts b{display:block;color:#fff;font:600 1.5rem/1.1 var(--sans);margin-bottom:6px;white-space:nowrap}
.hero .eyebrow{color:#ff9f75}
.hero--page .hero__in{padding-block:clamp(56px,8vw,110px) clamp(48px,6vw,84px)}
.hero--page h1{font-size:clamp(2rem,4.2vw,3.3rem)}
.crumbs{font:400 .8rem var(--mono);color:var(--night-muted);margin-bottom:18px}
.crumbs a{color:var(--night-muted);text-decoration:none}
.crumbs a:hover{color:#fff}

/* ---------- strip ---------- */
.strip{border-bottom:1px solid var(--line);background:var(--paper-2)}
.strip__in{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;padding-block:18px}
.strip__label{font:500 .72rem/1 var(--mono);text-transform:uppercase;letter-spacing:.1em;color:var(--muted)}
.strip__label:not(:first-child){margin-left:14px}
.strip ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.strip li{font:500 .85rem/1 var(--mono);padding:8px 11px;border:1px solid var(--line);border-radius:6px;background:var(--card)}
.strip li.more{border-style:dashed;color:var(--muted);background:transparent}

/* ---------- sections + text layout ---------- */
.section{padding:clamp(64px,9vw,120px) 0}
.section--alt{background:var(--paper-2);border-block:1px solid var(--line)}
.section--night{background:var(--night);color:var(--night-text)}
.section--night h2,.section--night h3{color:#fff}
.section--night .sub{color:var(--night-muted)}
.section__head{max-width:760px;margin-bottom:clamp(36px,5vw,56px)}
.split{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(28px,6vw,88px);align-items:start}
.sticky{position:sticky;top:110px}

.prose{font-size:1.06rem;color:var(--ink-2);max-width:640px}
.prose p{margin-bottom:1.15em}
.prose p:first-child::first-line{color:var(--ink);font-weight:500}
.pull{margin:28px 0;padding:6px 0 6px 22px;border-left:3px solid var(--signal);font-size:clamp(1.15rem,1.8vw,1.4rem);line-height:1.45;color:var(--ink);font-weight:500;letter-spacing:-.01em}
.pull small{display:block;margin-top:8px;font:400 .82rem var(--mono);color:var(--muted);letter-spacing:0}

.notes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px);counter-reset:n}
.note{counter-increment:n;padding-top:18px;border-top:1px solid var(--ink)}
.note::before{content:counter(n,decimal-leading-zero);display:block;font:500 .8rem var(--mono);color:var(--signal);margin-bottom:14px}
.note h3{margin-bottom:10px;font-size:1.2rem}
.note p{color:var(--ink-2);font-size:.98rem}
.section--night .note{border-color:rgba(255,255,255,.4)}
.section--night .note p{color:var(--night-text)}

.callout{display:flex;gap:18px;align-items:flex-start;padding:22px 24px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card)}
.callout__icon{flex:none;width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);font:600 1rem var(--mono)}
.callout p{color:var(--ink-2);font-size:.98rem}
.callout h3{margin-bottom:6px}

/* ---------- cards / rails ---------- */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.card{position:relative;padding:26px 24px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);display:flex;flex-direction:column;gap:10px;transition:border-color .2s,transform .2s}
.card:hover{border-color:var(--ink)}
.card h3{font-size:1.12rem}
.card p{color:var(--ink-2);font-size:.96rem;margin:0}
.card__tag{align-self:flex-start;font:500 .7rem/1 var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--accent);background:var(--accent-soft);padding:6px 8px;border-radius:5px}
.card__more{margin-top:auto;padding-top:8px;font-weight:500;font-size:.93rem;color:var(--accent);text-decoration:none}
.card__more::after{content:" →"}
a.card{text-decoration:none;color:inherit}

/* ---------- steps ---------- */
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--ink)}
.step{padding:26px 28px 30px 0;display:flex;flex-direction:column}
.step + .step{padding-left:28px;border-left:1px solid var(--line)}
.step__n{font:500 .82rem var(--mono);color:var(--signal);margin-bottom:18px}
.step h3{font-size:1.35rem;margin-bottom:10px}
.step p{color:var(--ink-2);font-size:.98rem}
.step__code{align-self:flex-start;margin-top:auto;font-size:.8rem}

/* ---------- flow diagram ---------- */
.flow{position:relative;margin-top:8px;border-radius:18px;background:var(--night);border:1px solid var(--night-line);padding:clamp(14px,2vw,26px);color:var(--night-text);overflow:hidden}
.flow::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);background-size:22px 22px;pointer-events:none}
.flow__scroll{position:relative;overflow-x:auto;scrollbar-width:thin;-webkit-overflow-scrolling:touch}
.flow svg{display:block;width:100%;min-width:1000px;height:auto;font-family:var(--mono)}
.flow__legend{position:relative;display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:14px;font:400 .78rem var(--mono);color:var(--night-muted)}
.flow__hint{display:none;position:relative;font:400 .75rem var(--mono);color:var(--night-muted);margin-top:10px}
.flow__ctl{position:relative;display:flex;justify-content:flex-end;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.flow__btn{border:1px solid var(--night-line);background:var(--night-2);color:var(--night-text);font:500 .75rem var(--mono);padding:7px 10px;border-radius:7px;cursor:pointer}
.flow__btn:hover{color:#fff;border-color:#fff}
.fnode rect{fill:var(--night-2);stroke:var(--night-line);stroke-width:1}
.fnode text{fill:var(--night-text);font-size:12.5px}
.fnode .t{fill:#fff;font-family:var(--sans);font-weight:600;font-size:14px}
.fnode .s{fill:var(--night-muted);font-size:11px}
.fnode--core rect{fill:#23213d;stroke:#4a42a0}
.fnode--gate rect{fill:#1f2a24;stroke:#2f6b48}
.fnode--err rect{fill:#2e1c1c;stroke:#7a3434}
.fnode--err .t{fill:#ffb3a8}
.fnode--out rect{fill:#1b222b;stroke:#34506e}
.fgroup{fill:none;stroke:rgba(255,255,255,.08);stroke-dasharray:3 5}
.fgroup-l{fill:var(--night-muted);font-size:10.5px;letter-spacing:.12em}
.fedge{fill:none;stroke:#3a404c;stroke-width:1.4}
.fedge--err{stroke:#6b3434;stroke-dasharray:5 5}
.fedge--retry{stroke:#6b5a2c;stroke-dasharray:3 4}
.fedge--sync{stroke:#2f6b48;stroke-dasharray:4 4;opacity:.3;transition:opacity .3s}
.fsync-l{opacity:.35;transition:opacity .3s}
.flow svg.is-sync .fedge--sync,.flow svg.is-sync .fsync-l{opacity:1}
.flow svg.is-sync [data-e="s2q"]{opacity:.3}
.lg--resp{background:#6fe0a0}
.fbadge rect{fill:var(--signal)}
.fbadge text{fill:#fff;font-size:10.5px;font-weight:500}
.fdot{filter:drop-shadow(0 0 4px currentColor)}

/* ---------- video player ---------- */
.player{position:relative;margin:0;border-radius:14px;overflow:hidden;background:var(--night);border:1px solid var(--line);box-shadow:0 1px 0 rgba(0,0,0,.02),0 40px 80px -40px rgba(22,24,29,.45)}
.player__bar{display:flex;align-items:center;gap:6px;height:36px;padding:0 12px;background:#e9e6de;border-bottom:1px solid var(--line)}
.player__bar i{width:10px;height:10px;border-radius:50%;background:#cfcabd}
.player__bar span{margin:0 auto;font:400 .74rem var(--mono);color:var(--muted);padding-right:40px}
.player video{width:100%;aspect-ratio:16/10;object-fit:cover;background:#f4f5f7;cursor:pointer}
.player__ctl{position:absolute;left:14px;bottom:14px;display:flex;align-items:center;gap:10px;padding:6px 12px 6px 6px;border-radius:999px;background:rgba(15,17,21,.78);color:#fff;font:500 .78rem var(--mono);border:0;cursor:pointer;backdrop-filter:blur(6px);transition:opacity .2s}
.player__ctl svg{width:26px;height:26px;border-radius:50%;background:#fff;color:var(--night);padding:7px}
.player__prog{position:absolute;left:0;right:0;bottom:0;height:3px;background:rgba(15,17,21,.12)}
.player__prog i{display:block;height:100%;width:0;background:var(--accent)}
.player.is-paused::after{content:"";position:absolute;inset:36px 0 0 0;background:rgba(15,17,21,.12);pointer-events:none}

/* ---------- demo tabs ---------- */
.demo{display:grid;grid-template-columns:minmax(0,.38fr) minmax(0,1fr);gap:28px;align-items:start}
.demo__tabs{display:flex;flex-direction:column;gap:8px}
.demo__tabs button{text-align:left;font:inherit;color:inherit;background:transparent;border:1px solid transparent;border-left:2px solid var(--line);border-radius:0 10px 10px 0;padding:16px 18px;cursor:pointer;transition:background .15s,border-color .15s}
.demo__tabs button b{display:block;font-weight:600;margin-bottom:4px}
.demo__tabs button span{color:var(--muted);font-size:.92rem;line-height:1.45;display:block}
.demo__tabs button:hover{background:var(--card)}
.demo__tabs button[aria-selected="true"]{background:var(--card);border-color:var(--line);border-left-color:var(--accent)}
.demo__dots{display:none;justify-content:center;gap:8px;margin-top:14px}
.demo__dots i{width:8px;height:8px;border-radius:50%;background:var(--line)}
.demo__dots i.on{background:var(--accent);width:22px;border-radius:4px}

/* ---------- gallery ---------- */
.gal__head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap}
.gal__nav{display:flex;align-items:center;gap:12px}
.gal__count{font:500 .85rem var(--mono);color:var(--muted);min-width:52px;text-align:center}
.gal__count b{color:var(--ink);font-weight:500}
.gal{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;padding:36px max(var(--gut),calc((100vw - var(--maxw))/2 + var(--gut))) 14px;scroll-padding-inline:max(var(--gut),calc((100vw - var(--maxw))/2 + var(--gut)));scrollbar-width:none;overscroll-behavior-x:contain}
.gal::-webkit-scrollbar{display:none}
.gal__item{flex:0 0 min(80vw,720px);scroll-snap-align:start;margin:0}
.gal__zoom{display:block;width:100%;padding:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#f4f5f7;cursor:zoom-in;transition:transform .2s ease,box-shadow .2s ease}
.gal__zoom img{width:100%;aspect-ratio:16/10;object-fit:cover;object-position:top left}
.gal__zoom:hover{transform:translateY(-3px);box-shadow:0 18px 36px -22px rgba(22,24,29,.35)}
.gal__item figcaption{margin-top:14px;font-size:.93rem;color:var(--muted);max-width:580px}
.gal__item figcaption b{display:block;color:var(--ink);font-weight:600;margin-bottom:2px}

/* ---------- duo ---------- */
.duo{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.duo__col{padding:clamp(24px,3vw,36px);border:1px solid var(--line);border-radius:16px;background:var(--card)}
.duo__col--you{background:var(--night);border-color:var(--night);color:var(--night-text)}
.duo__h{font-size:1.3rem;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.duo__col--you .duo__h{color:#fff;border-color:rgba(255,255,255,.14)}
.ticks{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.ticks li{position:relative;padding-left:28px;font-size:.97rem;color:var(--ink-2)}
.ticks li::before{content:"";position:absolute;left:2px;top:.5em;width:12px;height:7px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}
.ticks b{color:var(--ink);font-weight:600}
.duo__col--you .ticks li{color:var(--night-text)}
.duo__col--you .ticks b{color:#fff}
.duo__col--you .ticks li::before{border-color:var(--signal)}

/* ---------- spec list (formats) ---------- */
.spec{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.spec__box{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);overflow:hidden}
.spec__box h3{padding:18px 22px;border-bottom:1px solid var(--line);font-size:1.02rem;display:flex;justify-content:space-between;align-items:center}
.spec__box h3 small{font:400 .75rem var(--mono);color:var(--muted)}
.spec__box dl{margin:0}
.spec__box dl div{display:grid;grid-template-columns:130px 1fr;gap:14px;padding:14px 22px;border-bottom:1px solid var(--line)}
.spec__box dl div:last-child{border-bottom:0}
.spec__box dt{font:500 .86rem var(--mono);color:var(--ink)}
.spec__box dd{margin:0;color:var(--ink-2);font-size:.94rem}
.spec__box--more{border-style:dashed;background:transparent}

/* ---------- timeline ---------- */
.timeline{list-style:none;counter-reset:t;margin:0;padding:0}
.timeline li{counter-increment:t;position:relative;padding:0 0 30px 60px;color:var(--ink-2)}
.timeline li::before{content:counter(t,decimal-leading-zero);position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;border:1px solid var(--ink);display:grid;place-items:center;font:500 .8rem var(--mono);color:var(--ink);background:var(--paper)}
.timeline li:not(:last-child)::after{content:"";position:absolute;left:20px;top:44px;bottom:4px;width:1px;background:var(--line)}
.timeline b{display:block;color:var(--ink);font-weight:600;font-size:1.08rem;margin-bottom:4px;padding-top:8px}

/* ---------- price ---------- */
.price{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0;border:1px solid var(--line);border-radius:16px;background:var(--card);overflow:hidden}
.price__main{padding:clamp(26px,4vw,44px);border-right:1px solid var(--line)}
.price__main .big{font:600 clamp(1.6rem,3vw,2.2rem)/1.15 var(--sans);letter-spacing:-.02em;margin:10px 0 16px}
.price__main p{color:var(--ink-2)}
.price__list{padding:clamp(26px,4vw,44px);background:var(--paper-2)}
.price__list h3{font-size:.8rem;font-family:var(--mono);font-weight:500;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin-bottom:16px}
.price__list ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.price__list li{display:flex;gap:12px;align-items:baseline;padding-bottom:10px;border-bottom:1px solid var(--line);font-size:.97rem}
.price__list li:last-child{border-bottom:0}
.price__list li span{font:500 .78rem var(--mono);color:var(--signal);min-width:22px}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:22px 44px 22px 0;font-weight:500;font-size:1.08rem;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);font:400 1.5rem/1 var(--mono);color:var(--muted);transition:transform .2s}
.faq details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq details p{color:var(--ink-2);margin:-4px 0 22px;max-width:680px}

/* ---------- CTA band ---------- */
.band{background:var(--night);color:#fff;position:relative;overflow:hidden;isolation:isolate}
.band canvas.net{position:absolute;inset:0;width:100%;height:100%;z-index:-1;opacity:.55}
.band__in{padding-block:clamp(56px,8vw,96px);display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap}
.band h2{max-width:640px}
.band p{color:var(--night-text);margin-top:12px;max-width:560px}

/* ---------- contact ---------- */
.contact{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(28px,5vw,72px);align-items:start}
.contact__list{list-style:none;padding:0;margin:26px 0 0}
.contact__list li{padding:12px 0 12px 30px;border-top:1px solid var(--line);position:relative;font-size:.97rem}
.contact__list li::before{content:"✓";position:absolute;left:2px;color:var(--ok);font-weight:600}
.form{display:grid;grid-template-columns:1fr 1fr;gap:16px 18px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:clamp(20px,3vw,34px)}
.form__row{display:flex;flex-direction:column;gap:6px;min-width:0}
.form__row--full{grid-column:1/-1}
.form label{font-size:.88rem;font-weight:500}
.form .opt{font-weight:400;color:var(--muted);font-size:.8rem;margin-left:4px}
.form input,.form select,.form textarea{font:inherit;font-size:16px;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:9px;padding:11px 13px;width:100%;transition:border-color .15s,box-shadow .15s}
.form textarea{resize:vertical;min-height:140px}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.form [aria-invalid="true"]{border-color:var(--err)}
.form__consent{flex-direction:row;align-items:flex-start;gap:10px}
.form__consent input{width:18px;height:18px;flex:none;margin-top:3px;accent-color:var(--accent)}
.form__consent label{font-weight:400;font-size:.88rem;color:var(--ink-2)}
.form__foot{flex-direction:row;align-items:center;flex-wrap:wrap;gap:16px}
.form__status{margin:0;font-size:.92rem}
.form__status.ok{color:var(--ok)}
.form__status.err{color:var(--err)}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}

/* ---------- interactive translation demo ---------- */
.lab{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:20px;align-items:start}
.lab__panel{border:1px solid var(--night-line);border-radius:16px;background:var(--night-2);color:var(--night-text);overflow:hidden}
.lab__head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px 18px;border-bottom:1px solid var(--night-line);flex-wrap:wrap}
.lab__head h3{color:#fff;font-size:.98rem}
.lab__head small{font:400 .75rem var(--mono);color:var(--night-muted)}
.lab__presets{display:flex;flex-wrap:wrap;gap:8px;padding:14px 18px 0}
.chip{font:500 .78rem var(--mono);border:1px solid var(--night-line);background:transparent;color:var(--night-text);padding:7px 10px;border-radius:999px;cursor:pointer;transition:border-color .15s,color .15s,background .15s}
.chip:hover{border-color:#fff;color:#fff}
.chip[aria-pressed="true"]{background:#fff;color:var(--night);border-color:#fff}
.chip--add{border-style:dashed}
.chip--add::before{content:"+ ";color:var(--signal)}
.chip--add[aria-pressed="true"]::before{content:"✓ ";color:var(--ok)}
.lab textarea{display:block;width:100%;min-height:420px;margin:0;border:0;resize:vertical;background:transparent;color:#e6e8ee;font:400 .86rem/1.7 var(--mono);padding:16px 18px;outline:none;white-space:pre;overflow:auto}
.lab__opts{display:flex;flex-wrap:wrap;gap:14px 22px;padding:14px 18px;border-top:1px solid var(--night-line);font-size:.88rem}
.lab__opts label{display:flex;align-items:center;gap:8px;cursor:pointer}
.lab__opts input{accent-color:var(--accent-2);width:16px;height:16px}
.lab__status{display:flex;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--night-line);font-size:.9rem}
.lab__status .pill{font:500 .74rem var(--mono);padding:5px 9px;border-radius:999px;background:#1f3a2b;color:#8fe0ad}
.lab__status .pill.err{background:#3a1f1f;color:#ffb3a8}
.lab__status .pill.warn{background:#3a321f;color:#ffd48a}
.lab__pipe{display:flex;align-items:center;gap:6px;flex-wrap:wrap;font:400 .76rem var(--mono);color:var(--night-muted);margin-left:auto}
.lab__pipe b{font-weight:500;color:var(--night-text)}
.lab__pipe .x{color:#ff8f80}
.lab__add{display:flex;flex-wrap:wrap;gap:8px;padding:14px 18px;border-bottom:1px solid var(--night-line)}
.lab__tabs{display:flex;overflow-x:auto;border-bottom:1px solid var(--night-line);scrollbar-width:none}
.lab__tabs::-webkit-scrollbar{display:none}
.lab__tabs button{flex:none;font:500 .8rem var(--mono);color:var(--night-muted);background:none;border:0;border-right:1px solid var(--night-line);padding:13px 16px;cursor:pointer;white-space:nowrap}
.lab__tabs button small{font-size:.7rem;color:#6b7280;margin-left:6px}
.lab__tabs button[aria-selected="true"]{color:#fff;background:var(--night);box-shadow:inset 0 -2px 0 var(--signal)}
.lab pre{margin:0;padding:16px 18px;overflow:auto;font:400 .84rem/1.7 var(--mono);color:#c7ccd6;min-height:300px;max-height:460px;background:var(--night)}
.lab pre code{background:none;border:0;padding:0;font-size:inherit}
.lab .k{color:#f0a36b}.lab .v{color:#8fe0ad}.lab .c{color:#8b93a3}
.lab__empty{padding:40px 18px;color:var(--night-muted);font-size:.92rem;text-align:center}
.mail{margin:16px 18px;border:1px solid #4d2b2b;border-radius:12px;background:#1d1414;overflow:hidden}
.mail__head{padding:12px 16px;border-bottom:1px solid #3b2323;font:400 .78rem/1.6 var(--mono);color:#d9b3ad}
.mail__head b{color:#fff;font-weight:500}
.mail__body{padding:14px 16px;font-size:.9rem;color:#ecd7d3}
.mail__body ul{margin:8px 0 0;padding-left:18px}
.lab__note{margin-top:14px;font:400 .8rem var(--mono);color:var(--muted)}

/* ---------- footer ---------- */
.foot{background:var(--night);color:var(--night-text);padding:64px 0 36px}
.foot__grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px}
.foot .brand{color:#fff}
.foot__brand p{color:var(--night-muted);font-size:.93rem;margin-top:14px;max-width:320px}
.foot__col{display:flex;flex-direction:column;gap:10px}
.foot__col h2{font:500 .74rem var(--mono);text-transform:uppercase;letter-spacing:.12em;color:var(--night-muted);margin-bottom:6px}
.foot__col a{color:var(--night-text);text-decoration:none;font-size:.94rem}
.foot__col a:hover{color:#fff}
.foot__copy{grid-column:1/-1;border-top:1px solid var(--night-line);padding-top:22px;margin-top:20px;font:400 .8rem var(--mono);color:var(--night-muted)}

/* ---------- lightbox ---------- */
.lightbox{border:0;padding:0;background:transparent;max-width:min(94vw,1680px);max-height:94vh;overflow:visible}
.lightbox::backdrop{background:rgba(10,11,14,.88)}
.lightbox img{max-height:84vh;width:auto;margin:0 auto;border-radius:10px;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.lightbox__cap{color:#e5e7eb;text-align:center;margin:14px 0 0;font-size:.92rem}
.lightbox__close{position:absolute;top:-46px;right:0;width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.3);background:rgba(0,0,0,.4);color:#fff;font-size:1.4rem;line-height:1;cursor:pointer}

/* small helpers */
.mt{margin-top:26px}
.lg{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:8px}
.lg--ok{background:#9d90ff}.lg--item{background:#7fd1ff}.lg--pass{background:#b8c0cc}.lg--retry{background:#ffc861}.lg--err{background:#ff7a6b}
.notes--stack{grid-template-columns:1fr;gap:28px}
.lab pre .x{color:#ff8f80}

/* legal / simple pages */
.legal h2{font-size:1.3rem;margin:34px 0 10px}
.legal p,.legal li{color:var(--ink-2)}

/* ---------- responsive ---------- */
@media (max-width:1060px){
  .hero__facts{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:22px}
  .hero__facts li:nth-child(3){padding-left:0;border-left:0}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .demo{grid-template-columns:1fr}
  .demo__tabs{flex-direction:row;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;margin-inline:calc(var(--gut) * -1);padding-inline:var(--gut)}
  .demo__tabs::-webkit-scrollbar{display:none}
  .demo__tabs button{flex:0 0 240px;scroll-snap-align:start;border-left:1px solid transparent;border-top:2px solid var(--line);border-radius:0 0 10px 10px}
  .demo__tabs button[aria-selected="true"]{border-left-color:var(--line);border-top-color:var(--accent)}
  .demo__dots{display:flex}
  .lab{grid-template-columns:1fr}
  .foot__grid{grid-template-columns:1fr 1fr}
  .foot__brand{grid-column:1/-1}
}
@media (max-width:900px){
  body{font-size:16px}
  .burger{display:block}
  .nav{position:fixed;inset:68px 0 auto 0;max-height:calc(100dvh - 68px);overflow:auto;flex-direction:column;align-items:stretch;gap:0;background:var(--night);border-bottom:1px solid var(--night-line);padding:8px var(--gut) 22px;transform:translateY(-8px);opacity:0;visibility:hidden;transition:opacity .2s,transform .2s,visibility .2s}
  .nav.is-open{opacity:1;visibility:visible;transform:none}
  .menu{flex-direction:column;align-items:stretch;gap:0}
  .menu__item{flex-wrap:wrap;border-bottom:1px solid var(--night-line)}
  .menu__link{flex:1;padding:15px 0;font-size:1.06rem;border-radius:0;background:none!important}
  .menu__link[aria-current="page"]::after{display:none}
  .menu__link[aria-current="page"]{color:#ff9f75}
  .menu__toggle{display:grid;place-items:center;width:44px;height:44px;border:0;background:none;color:#fff;cursor:pointer}
  .menu__toggle span{width:9px;height:9px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);transition:transform .2s;margin-top:-4px}
  .menu__toggle[aria-expanded="true"] span{transform:rotate(-135deg);margin-top:4px}
  .menu__sub{position:static;flex-basis:100%;min-width:0;opacity:1;visibility:visible;transform:none;display:none;background:none;border:0;box-shadow:none;padding:0 0 10px 12px}
  .menu__sub.is-open{display:block}
  .menu__item--sub:hover .menu__sub{transform:none}
  .nav__cta{margin-top:16px}
  .split,.contact,.duo,.price,.spec{grid-template-columns:1fr}
  .sticky{position:static}
  .price__main{border-right:0;border-bottom:1px solid var(--line)}
  .steps{grid-template-columns:1fr}
  .step,.step + .step{padding:24px 0;border-left:0}
  .step + .step{border-top:1px solid var(--line)}
  .notes{grid-template-columns:1fr}
  .flow__hint{display:block}
  .strip__label:not(:first-child){margin-left:0}
  /* swipeable rails on mobile */
  .cards--rail{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:14px;margin-inline:calc(var(--gut) * -1);padding:4px var(--gut) 10px;scrollbar-width:none}
  .cards--rail::-webkit-scrollbar{display:none}
  .cards--rail .card{flex:0 0 82%;scroll-snap-align:start}
}
@media (max-width:600px){
  .cards{grid-template-columns:1fr}
  .form{grid-template-columns:1fr}
  .gal__item{flex-basis:88vw}
  .hero__cta .btn{flex:1 1 auto}
  .hero__facts b{font-size:1.25rem}
  .spec__box dl div{grid-template-columns:1fr;gap:4px}
  .lab textarea{min-height:300px;font-size:.78rem}
  .lab pre{font-size:.76rem}
  .player__ctl span{display:none}
  .player__ctl{padding:6px}
  .foot__grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
}