:root{--ink:#11111b;--paper:#f7f6f1;--line:#d9d7ce;--purple:#7025e0;--violet:#a172ff;--yellow:#ffc21c;--coral:#ff6f61;--mint:#b8f7cf;--blue:#b9d8ff;--green:#173d2a;--max:1200px;--shadow:0 28px 70px rgba(28,18,63,.13);--radius:20px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Manrope",sans-serif;background:var(--paper);color:var(--ink)}
a{color:inherit}
button{font-family:inherit}
.skip-link{position:fixed;left:16px;top:12px;z-index:99;transform:translateY(-150%);background:#111;color:#fff;padding:12px 16px;border-radius:8px}
.skip-link:focus{transform:none}

/* header */
.site-header{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px clamp(18px,4vw,56px);background:rgba(247,246,241,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;font-weight:800}
.brand-mark{display:grid;place-items:center;width:42px;height:42px;background:var(--ink);color:#fff;border-radius:50%;font-size:12px}
.brand small{display:block;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;opacity:.6}
.header-actions{display:flex;align-items:center;gap:12px}
.user-chip{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;padding:8px 14px;border:1px solid var(--ink);border-radius:999px}
.user-chip span{width:8px;height:8px;border-radius:50%;background:var(--mint);border:1px solid var(--ink)}

/* buttons */
.button{min-height:48px;display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:0 20px;border-radius:999px;text-decoration:none;font-weight:800;font-size:14px;border:1px solid var(--ink);background:#fff;color:var(--ink);cursor:pointer;transition:transform .2s ease,box-shadow .2s ease}
.button:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(17,17,27,.12)}
.button-dark{background:var(--ink);color:#fff}
.button-ghost{border-color:transparent;background:transparent}
.button-small{min-height:38px;padding:0 14px;font-size:13px}
.button:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* layout helpers */
.grid-bg{background-image:linear-gradient(to right,rgba(17,17,27,.06) 1px,transparent 1px),linear-gradient(to bottom,rgba(17,17,27,.06) 1px,transparent 1px);background-size:72px 72px}
.section{max-width:var(--max);margin:auto;padding:clamp(56px,7vw,110px) clamp(18px,5vw,56px)}
.eyebrow{display:flex;align-items:center;gap:10px;margin:0 0 16px;text-transform:uppercase;letter-spacing:.14em;font-size:12px;font-weight:800}
.eyebrow span{width:10px;height:10px;background:var(--purple);border-radius:2px}

/* hero */
.hero{max-width:var(--max);margin:auto;padding:clamp(56px,8vw,100px) clamp(18px,5vw,56px);display:grid;grid-template-columns:minmax(0,1fr) minmax(340px,.85fr);gap:clamp(36px,6vw,80px);align-items:center}
.hero h1{margin:0;letter-spacing:-.05em;line-height:.98;font-size:clamp(42px,6vw,78px)}
.hero h1 em{font-style:normal;color:var(--purple)}
.hero-text{max-width:560px;font-size:clamp(16px,1.3vw,19px);line-height:1.6;margin:22px 0 30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-board{position:relative;min-height:400px;border:2px solid var(--ink);background:#fff;padding:28px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px}
.feed-card{border:1px solid var(--line);border-radius:16px;padding:16px;background:var(--paper)}
.feed-card header{display:flex;justify-content:space-between;align-items:center;font-size:12px;font-weight:800;margin-bottom:8px}
.feed-card p{margin:0;font-size:14px;line-height:1.5}
.feed-stars{color:var(--purple);font-size:14px;letter-spacing:2px}
.feed-card.tilt{transform:rotate(-2deg)}
.feed-bubble{align-self:flex-end;background:var(--yellow);border-radius:14px 14px 2px 14px;padding:12px 16px;font-weight:700;font-size:13px;max-width:70%}

/* steps */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--ink);margin-top:40px}
.steps-grid article{padding:24px;border-right:1px solid var(--ink);min-height:200px;display:flex;flex-direction:column}
.steps-grid article:last-child{border-right:0}
.steps-grid span{font-size:12px;font-weight:800}
.steps-grid h3{margin:auto 0 10px;font-size:24px;letter-spacing:-.02em}
.steps-grid p{margin:0;line-height:1.55}

/* labs grid */
.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:36px}
.section-heading h2{margin:0;font-size:clamp(34px,4vw,54px);letter-spacing:-.04em}
.section-heading p{max-width:480px;line-height:1.6;margin:10px 0 0}
.labs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.lab-card{border:1px solid var(--ink);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;gap:14px;text-decoration:none;color:var(--ink);background:#fff;transition:transform .2s ease,box-shadow .2s ease}
.lab-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.lab-card-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.chip{display:inline-flex;font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.06em;padding:6px 10px;border-radius:999px;background:var(--mint)}
.chip.blue{background:var(--blue)}
.chip.yellow{background:var(--yellow)}
.chip.coral{background:#ffd0cc}
.lab-card h3{margin:0;font-size:22px;letter-spacing:-.02em}
.lab-card .tagline{margin:0;font-size:14px;line-height:1.5;color:#41414d;flex:1}
.lab-card-meta{display:flex;justify-content:space-between;align-items:center;font-size:12px;font-weight:700;color:#5b5b66;border-top:1px solid var(--line);padding-top:12px}
.stars{color:var(--purple);letter-spacing:1px}
.stars.empty{color:var(--line)}
.empty-state{border:1px dashed var(--ink);border-radius:var(--radius);padding:48px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px}
.empty-state p{max-width:420px;margin:0;line-height:1.6}

/* lab detail */
.lab-detail{max-width:900px;margin:0 auto;padding:clamp(32px,5vw,56px) clamp(18px,5vw,24px)}
.back-link{display:inline-flex;align-items:center;gap:6px;font-weight:800;font-size:14px;text-decoration:none;margin-bottom:24px}
.lab-header{border:1px solid var(--ink);border-radius:var(--radius);padding:clamp(24px,4vw,40px);background:#fff;margin-bottom:32px}
.lab-header-top{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;flex-wrap:wrap}
.lab-header h1{margin:12px 0;font-size:clamp(30px,4vw,48px);letter-spacing:-.03em}
.lab-owner{font-size:13px;font-weight:700;color:#5b5b66}
.lab-description{line-height:1.65;font-size:16px;margin:18px 0}
.lab-rating-badge{text-align:right;flex-shrink:0}
.lab-rating-badge strong{display:block;font-size:32px}
.lab-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.lab-links a{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:800;padding:9px 16px;border:1px solid var(--ink);border-radius:999px;text-decoration:none}

.timeline-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px}
.timeline-head h2{margin:0;font-size:26px;letter-spacing:-.02em}
.update-card{border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:18px;background:#fff}
.update-card header{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.update-card h3{margin:0;font-size:19px}
.update-meta{font-size:12px;font-weight:700;color:#5b5b66}
.update-body{line-height:1.6;white-space:pre-wrap;margin:0 0 16px}
.feedback-list{display:flex;flex-direction:column;gap:10px;margin:14px 0}
.feedback-item{background:var(--paper);border-radius:12px;padding:12px 14px;font-size:14px}
.feedback-item header{display:flex;justify-content:space-between;font-size:12px;font-weight:800;margin-bottom:4px}
.feedback-toggle{font-size:13px;font-weight:800;background:none;border:none;color:var(--purple);cursor:pointer;padding:4px 0}
.feedback-form{display:none;gap:10px;margin-top:12px;border-top:1px solid var(--line);padding-top:14px}
.feedback-form.open{display:flex;flex-direction:column}
.star-picker{display:flex;gap:6px}
.star-picker button{background:none;border:none;font-size:22px;cursor:pointer;color:var(--line);padding:0}
.star-picker button.active,.star-picker button:hover{color:var(--purple)}

/* forms */
form.stacked{display:flex;flex-direction:column;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.06em}
.field input,.field textarea,.field select{border:1px solid var(--ink);border-radius:10px;padding:11px 14px;font-family:inherit;font-size:14px;background:#fff;color:var(--ink)}
.field textarea{resize:vertical;min-height:90px}
.field small{font-size:12px;color:#5b5b66}
.form-error{color:#b3261e;font-size:13px;font-weight:700;min-height:18px}
.form-actions{display:flex;justify-content:flex-end;gap:10px}

/* modal */
.modal-overlay{position:fixed;inset:0;background:rgba(17,17,27,.55);display:none;align-items:center;justify-content:center;padding:20px;z-index:50}
.modal-overlay.open{display:flex}
.modal-panel{background:#fff;border-radius:var(--radius);border:1px solid var(--ink);padding:clamp(24px,4vw,36px);max-width:460px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow);position:relative}
.modal-panel.wide{max-width:600px}
.modal-close{position:absolute;top:16px;right:16px;background:none;border:none;font-size:20px;cursor:pointer;line-height:1}
.modal-panel h2{margin:0 0 6px;font-size:26px;letter-spacing:-.03em}
.modal-panel .sub{margin:0 0 22px;font-size:14px;color:#5b5b66}
.tabs{display:flex;gap:8px;margin-bottom:20px}
.tab-btn{flex:1;padding:10px;border:1px solid var(--ink);border-radius:999px;background:#fff;font-weight:800;font-size:13px;cursor:pointer}
.tab-btn.active{background:var(--ink);color:#fff}
.hidden{display:none !important}

/* footer */
footer{max-width:var(--max);margin:auto;border-top:1px solid #111;padding:28px clamp(18px,5vw,56px);display:flex;justify-content:space-between;gap:20px;align-items:center;flex-wrap:wrap}
footer a{text-decoration:none;font-weight:800}

.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:none}

@media(max-width:900px){
  .hero{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
  .steps-grid article{border-right:0;border-bottom:1px solid var(--ink)}
  .steps-grid article:last-child{border-bottom:0}
}
@media(max-width:640px){
  .site-header{flex-wrap:wrap}
  .lab-header-top{flex-direction:column}
  .lab-rating-badge{text-align:left}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
}