:root{--bg-canvas:#1c1f24;--bg-surface:#292e35;--bg-surface-hover:#323840;--bg-deep:#15181c;--text-primary:#e5e7eb;--text-muted:#a7aeb8;--accent-primary:#14b8a6;--accent-secondary:#0f766e;--accent-soft:#5eead4;--border-subtle:rgba(229,231,235,.1);--border-highlight:rgba(20,184,166,.45);--font-sans:"Trebuchet MS","Segoe UI",sans-serif;--font-serif:"Trebuchet MS","Segoe UI",sans-serif;--font-mono:ui-monospace,SFMono-Regular,Menlo,monospace;--ease-kinetic:cubic-bezier(.16,1,.3,1);--shadow-elevation:0 20px 40px -15px rgba(0,0,0,.6);--shadow-inner:inset 0 1px 0 rgba(255,255,255,.06);--glow-accent:0 0 30px -6px var(--accent-primary);--glass-backdrop:blur(20px) saturate(160%);--r:4px;--frame:40px}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg-deep);color:var(--text-primary);font:1.0625rem/1.8 var(--font-sans);overflow-wrap:anywhere;hyphens:auto;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%}
a{color:var(--accent-soft);text-underline-offset:3px}
a:hover{color:var(--accent-primary)}
:focus-visible{outline:3px solid var(--text-primary);outline-offset:3px;box-shadow:0 0 0 6px rgba(20,184,166,.55);border-radius:var(--r)}
h1,h2,h3{line-height:1.25;font-weight:700;letter-spacing:.005em}
.skip{position:absolute;left:-999px;top:0;background:var(--accent-primary);color:#0b1412;padding:.6rem 1rem;z-index:100;border-radius:var(--r)}
.skip:focus{left:1rem;top:1rem}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.frame{position:relative;margin:var(--frame);border:1px solid var(--border-highlight);border-radius:var(--r);background:var(--bg-canvas);min-height:calc(100vh - 2*var(--frame));box-shadow:var(--shadow-inner)}
.wrap{max-width:1240px;margin:0 auto}
.site-header{position:absolute;top:0;left:0;right:0;z-index:30;background:transparent;transition:background .4s var(--ease-kinetic),box-shadow .4s}
.site-header.solid,.site-header.open{background:rgba(28,31,36,.97);box-shadow:0 8px 24px -12px rgba(0,0,0,.7)}
.hdr-in{display:flex;align-items:center;gap:1rem;padding:1rem 1.5rem}
.brand{display:flex;align-items:center;gap:.6rem;color:var(--text-primary);text-decoration:none;font-weight:700;font-size:1.05rem;margin-right:auto;white-space:nowrap}
.brand:hover{color:var(--text-primary)}
.mark{width:30px;height:30px;flex:none;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Crect x='1' y='1' width='30' height='30' rx='4' fill='none' stroke='%2314b8a6' stroke-width='2'/%3E%3Ccircle cx='16' cy='9' r='5' fill='%2314b8a6'/%3E%3Ccircle cx='8' cy='23' r='5' fill='%2314b8a6'/%3E%3Ccircle cx='24' cy='23' r='5' fill='%2314b8a6'/%3E%3Cpath d='M16 9L8 23h16z' fill='%231c1f24'/%3E%3C/svg%3E") center/contain no-repeat}
.nav ul{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:.2rem 1rem;list-style:none;margin:0;padding:0}
.nav a{position:relative;display:inline-block;color:var(--text-primary);text-decoration:none;font-size:.86rem;padding:.3rem 0;white-space:nowrap}
.nav a::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:var(--accent-primary);transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease-kinetic)}
.nav a:hover::after,.nav a[aria-current="page"]::after{transform:scaleX(1)}
.nav a[aria-current="page"]{color:var(--accent-soft)}
.menu-btn{display:none;align-items:center;justify-content:center;width:44px;height:44px;border:0;border-radius:999px;background:var(--accent-primary);color:#0b1412;font-size:1.5rem;font-weight:700;cursor:pointer;line-height:1}
.hero{position:relative;isolation:isolate;display:grid;place-items:center;text-align:center;padding:7.5rem 1.5rem 4rem;overflow:hidden;border-radius:var(--r) var(--r) 0 0}
.hero.home{min-height:calc(100vh - 2*var(--frame))}
.hero-art{position:absolute;inset:0;width:100%;height:100%;z-index:-2;display:block}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(28,31,36,.7) 0%,rgba(28,31,36,.28) 45%,rgba(28,31,36,.95) 100%)}
.hero.sub{min-height:58vh;background:radial-gradient(circle at 70% 30%,rgba(20,184,166,.16),transparent 55%),repeating-linear-gradient(90deg,rgba(20,184,166,.1) 0 1px,transparent 1px 64px),repeating-linear-gradient(0deg,rgba(229,231,235,.06) 0 1px,transparent 1px 64px),var(--bg-canvas)}
.hero-in{max-width:52rem}
.hero h1{font-size:clamp(2.1rem,6vw,4.4rem);margin:0 auto .9rem;max-width:18ch}
.hero.sub h1{font-size:clamp(2rem,5vw,3.6rem)}
.hero-lede{color:var(--text-primary);font-size:1.15rem;max-width:60ch;margin:0 auto 1.8rem;opacity:.92}
.kicker{display:block;font-size:.78rem;letter-spacing:.2em;text-transform:uppercase;color:var(--accent-soft);margin:0 0 .8rem;font-weight:700}
.btns{display:flex;flex-wrap:wrap;gap:.8rem;justify-content:center}
.btn{display:inline-flex;align-items:center;gap:.5rem;background:var(--accent-primary);color:#0b1412;border:0;border-radius:999px;padding:.8rem 1.6rem;font:700 1rem var(--font-sans);text-decoration:none;cursor:pointer;transition:transform .4s var(--ease-kinetic),box-shadow .4s var(--ease-kinetic),background .3s}
.btn:hover{color:#0b1412;transform:translateY(-4px) scale(1.01);box-shadow:var(--shadow-elevation),var(--glow-accent)}
.btn.alt{background:var(--accent-soft)}
.btn.sm{padding:.55rem 1.1rem;font-size:.92rem}
.sec{padding:4.5rem 1.5rem;border-top:1px solid var(--border-subtle)}
.sec-h{font-size:clamp(1.6rem,3.2vw,2.4rem);margin:0 0 .6rem}
.lede{color:var(--text-muted);max-width:68ch;margin:0 0 2rem}
.lead{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:2.5rem;align-items:start}
.demo{margin:0;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--r);padding:1.25rem}
.demo svg{display:block;width:100%;height:auto;border-radius:var(--r)}
.demo figcaption,.pair figcaption,.media-cap{font-size:.93rem;color:var(--text-muted);margin-top:.8rem;line-height:1.7}
.guide h3{margin:0 0 .4rem;font-size:1.2rem}
.steps{counter-reset:s;list-style:none;padding:0;margin:1rem 0 1.5rem}
.steps li{counter-increment:s;position:relative;padding:.8rem 0 .8rem 3.1rem;border-bottom:1px solid var(--border-subtle)}
.steps li::before{content:counter(s);position:absolute;left:0;top:.85rem;width:2.1rem;height:2.1rem;border-radius:50%;background:rgba(20,184,166,.15);color:var(--accent-soft);display:grid;place-items:center;font-weight:700;font-size:.9rem}
.pair{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.25rem;margin:2.5rem 0 0}
.pair figure{margin:0;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--r);padding:1rem}
.pair svg{display:block;width:100%;height:auto;border-radius:var(--r)}
.pair strong{color:var(--accent-soft)}
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:0 3rem;margin-top:3rem}
.block{padding:1.6rem 0;border-top:1px solid var(--border-subtle)}
.block h2,.block h3{margin:0 0 .6rem;font-size:1.3rem}
.block p{margin:0 0 1rem}
.rows{list-style:none;padding:0;margin:0}
.row{display:grid;grid-template-columns:44px minmax(0,1fr);gap:1rem;align-items:start;padding:1.1rem .25rem;border-top:1px solid var(--border-subtle);color:inherit;text-decoration:none;transition:background .35s,transform .45s var(--ease-kinetic)}
.rows>li:last-child .row,.rows>.row:last-child{border-bottom:1px solid var(--border-subtle)}
.row h3{margin:0 0 .2rem;font-size:1.08rem}
.row p{margin:0;color:var(--text-muted)}
a.row:hover{color:inherit;background:linear-gradient(90deg,rgba(20,184,166,.1),transparent 70%);transform:translateX(4px)}
a.row:hover .ico{border-color:var(--accent-primary);box-shadow:var(--glow-accent)}
a.row .go{color:var(--accent-soft);font-weight:700;font-size:.92rem}
.ico{width:44px;height:44px;border:1px solid var(--border-highlight);border-radius:var(--r);background:var(--bg-surface) center/26px no-repeat;transition:box-shadow .4s,border-color .4s}
.i-eye{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2314b8a6' stroke-width='1.6'%3E%3Cpath d='M2 12s4-7 10-7 10 7 10 7-4 7-10 7S2 12 2 12z'/%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3C/svg%3E")}
.i-two{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2314b8a6' stroke-width='1.6'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M12 3a9 9 0 0 0 0 18z' fill='%2314b8a6'/%3E%3C/svg%3E")}
.i-cube{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2314b8a6' stroke-width='1.6' stroke-linejoin='round'%3E%3Cpath d='M12 2l9 5v10l-9 5-9-5V7zM3 7l9 5 9-5M12 12v10'/%3E%3C/svg%3E")}
.i-grid{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2314b8a6' stroke-width='1.6'%3E%3Cpath d='M2 21L10 4h4l8 17zM6 13h12M4 17h16M12 4v17'/%3E%3C/svg%3E")}
.i-search{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2314b8a6' stroke-width='1.8'%3E%3Ccircle cx='10.5' cy='10.5' r='6.5'/%3E%3Cpath d='M15.5 15.5L21 21'/%3E%3C/svg%3E")}
.i-q{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2314b8a6' stroke-width='1.6'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M9.5 9.5a2.5 2.5 0 1 1 3.5 2.3c-.7.3-1 .8-1 1.5V14M12 17v1'/%3E%3C/svg%3E")}
.i-shield{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2314b8a6' stroke-width='1.6'%3E%3Cpath d='M12 3l8 3v6c0 5-3.5 8-8 9-4.5-1-8-4-8-9V6z'/%3E%3C/svg%3E")}
.i-layers{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2314b8a6' stroke-width='1.6' stroke-linejoin='round'%3E%3Cpath d='M12 3l9 5-9 5-9-5zM3 13l9 5 9-5'/%3E%3C/svg%3E")}
.i-mail{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2314b8a6' stroke-width='1.6'%3E%3Crect x='3' y='5' width='18' height='14' rx='2'/%3E%3Cpath d='M3 7l9 6 9-6'/%3E%3C/svg%3E")}
.explain{border-top:1px solid var(--border-subtle)}
.explain:last-of-type{border-bottom:1px solid var(--border-subtle)}
.explain summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:1rem;padding:1rem .25rem;font-weight:700}
.explain summary::-webkit-details-marker{display:none}
.explain summary::after{content:"+";color:var(--accent-primary);font-size:1.3rem;line-height:1}
.explain[open] summary::after{content:"\2212"}
.explain .body{padding:0 .25rem 1.2rem;color:var(--text-muted)}
.explain .body p{margin:0 0 .8rem}
.callout{border-left:4px solid var(--accent-primary);background:rgba(41,46,53,.65);-webkit-backdrop-filter:var(--glass-backdrop);backdrop-filter:var(--glass-backdrop);padding:1.2rem 1.5rem;border-radius:0 var(--r) var(--r) 0;margin:2rem 0}
.callout p{margin:0}
.quote{font-style:italic;font-size:1.15rem}
.quote cite{display:block;font-style:normal;font-size:.88rem;color:var(--text-muted);margin-top:.5rem}
.media{margin:2rem 0 0}
.media .ratio{aspect-ratio:16/9;overflow:hidden;border-radius:var(--r);background:var(--bg-surface)}
.media .ratio.r43{aspect-ratio:4/3}
.media img{display:block;width:100%;height:100%;object-fit:cover}
.prose{max-width:70ch;margin:0 auto}
.prose h2{font-size:1.45rem;margin:2.2rem 0 .6rem}
.prose ul,.block ul{padding-left:1.2rem}
.prose li,.block li{margin:.35rem 0}
.tbl{width:100%;border-collapse:collapse;min-width:560px;font-size:.95rem}
.tbl th,.tbl td{text-align:left;padding:.75rem;border-bottom:1px solid var(--border-subtle);vertical-align:top}
.tbl th{color:var(--accent-soft);font-weight:700}
.form{display:grid;gap:1.1rem;max-width:42rem}
.form label{display:block;font-weight:700;margin-bottom:.3rem}
.form .hint{font-size:.88rem;color:var(--text-muted);font-weight:400}
.form input,.form select,.form textarea{width:100%;background:var(--bg-surface);color:var(--text-primary);border:1px solid var(--border-subtle);border-radius:var(--r);padding:.75rem .85rem;font:inherit;line-height:1.5}
.form textarea{min-height:120px;resize:vertical}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--accent-primary)}
.form [aria-invalid="true"]{border-color:#fca5a5}
.check{display:flex;gap:.6rem;align-items:flex-start}
.check input{width:auto;margin-top:.45rem}
.check label{font-weight:400}
.err{display:block;color:#fca5a5;font-size:.88rem;min-height:1em}
.status{color:var(--accent-soft);min-height:1.5em}
.output{background:var(--bg-surface);border:1px solid var(--border-highlight);border-radius:var(--r);padding:1.25rem;margin-top:1.5rem;max-width:42rem}
.output pre{white-space:pre-wrap;background:var(--bg-deep);padding:1rem;border-radius:var(--r);font:.92rem/1.6 var(--font-mono);margin:0 0 1rem}
.meta-line{font-size:.9rem;color:var(--text-muted)}
.site-footer{border-top:1px solid var(--border-subtle);padding:3rem 1.5rem 2.5rem;font-size:.94rem;color:var(--text-muted)}
.ft{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:2rem}
.ft-h{font-size:.8rem;letter-spacing:.18em;text-transform:uppercase;color:var(--accent-soft);margin:0 0 .6rem}
.ft ul{list-style:none;padding:0;margin:0}
.ft li{margin:.3rem 0}
.ft a{color:var(--text-primary)}
.ft p{margin:0 0 .6rem}
.ft-domain{font-weight:700;font-size:1.05rem}
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .8s var(--ease-kinetic),transform .8s var(--ease-kinetic)}
.js .reveal.in{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}.js .reveal{opacity:1;transform:none}}
@media (min-width:1201px){:root{--frame:44px}}
@media (max-width:1200px){:root{--frame:28px}}
@media (max-width:980px){.lead{grid-template-columns:1fr}}
@media (max-width:900px){.menu-btn{display:inline-flex}.nav{position:absolute;top:100%;left:.75rem;right:.75rem;background:var(--bg-surface);border:1px solid var(--border-highlight);border-radius:var(--r);padding:.75rem 1.25rem;box-shadow:var(--shadow-elevation);opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .35s var(--ease-kinetic),transform .35s var(--ease-kinetic),visibility .35s}.site-header.open .nav{opacity:1;visibility:visible;transform:none}.nav ul{flex-direction:column;align-items:flex-start;gap:0}.nav li{width:100%;border-bottom:1px solid var(--border-subtle)}.nav li:last-child{border-bottom:0}.nav a{display:block;padding:.7rem 0;font-size:1rem}}
@media (max-width:768px){:root{--frame:12px}.sec{padding:3.2rem 1.1rem}.hero{padding:6.5rem 1.1rem 3rem}.cols{gap:0}}
@media (max-width:480px){:root{--frame:6px}body{font-size:1rem}.hdr-in{padding:.8rem 1rem}.brand{font-size:.95rem}.btn{width:100%;justify-content:center}}