/* =====================================================================
   Stack18 ecosystem pages: /partnerships /events /community /stack-school
   Additive stylesheet. Loaded AFTER style.css, only by those four pages.
   Every selector is prefixed .eco- so nothing on existing pages changes.
   Uses the site's own tokens (--ink, --accent, --line-*, --font-*).
   ===================================================================== */

.eco{--eco-radius:14px;--eco-gap:20px}
.eco [id]{scroll-margin-top:96px}
.eco h1,.eco h2,.eco h3{text-wrap:balance}
.eco .a-head p{max-width:680px}

/* ---------- grids ---------- */
.eco-grid{display:grid;gap:var(--eco-gap)}
.eco-g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.eco-g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.eco-g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.eco-grid>*{min-width:0}
@media (max-width:1100px){.eco-g4{grid-template-columns:repeat(2,minmax(0,1fr))}.eco-g3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:680px){.eco-g2,.eco-g3,.eco-g4{grid-template-columns:minmax(0,1fr)}}

/* ---------- cards ---------- */
.eco-card{position:relative;display:flex;flex-direction:column;gap:10px;padding:28px 26px;background:#fff;border:1px solid var(--line-light);border-radius:var(--eco-radius);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.eco-card:hover{transform:translateY(-3px);border-color:var(--line-light-2);box-shadow:var(--shadow-md)}
.eco-card h3{font-size:1.18rem;line-height:1.25}
.eco-card p{color:var(--text-light-muted);font-size:.95rem;line-height:1.65}
.eco-card .eco-num{font-size:.74rem;font-weight:700;letter-spacing:.12em;color:var(--accent-ink)}
.eco-card .eco-more{margin-top:auto;padding-top:12px;font-weight:600;font-size:.9rem;color:var(--accent-ink)}
.eco-card ul{display:grid;gap:7px;margin-top:4px;font-size:.9rem;color:var(--text-light)}
.eco-card ul li{position:relative;padding-left:18px}
.eco-card ul li::before{content:"";position:absolute;left:0;top:.62em;width:7px;height:2px;background:var(--accent)}
.a-dark .eco-card{background:var(--ink-panel);border-color:var(--line-dark-2)}
.a-dark .eco-card:hover{border-color:rgba(242,169,59,.5);box-shadow:none}
.a-dark .eco-card h3{color:#fff}
.a-dark .eco-card p,.a-dark .eco-card ul{color:var(--text-dark-muted)}
.a-dark .eco-card .eco-num{color:#f2c176}
.eco-card.is-link{color:inherit;text-decoration:none}

.eco-tag{align-self:flex-start;font-size:.68rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;padding:4px 10px;border-radius:999px;background:var(--accent-dim);color:var(--accent-ink);border:1px solid var(--accent-dim-2)}
.a-dark .eco-tag{background:rgba(242,169,59,.12);color:#f2c176;border-color:rgba(242,169,59,.3)}

/* ---------- honest placeholder system ---------- */
.eco-ph{position:relative;display:flex;align-items:flex-end;justify-content:flex-start;min-height:200px;border-radius:12px;overflow:hidden;background-color:#E9E4D6;background-image:radial-gradient(rgba(16,21,36,.16) 1px,transparent 1.2px);background-size:16px 16px;border:1px dashed #B9B09A}
.eco-ph.dark{background-color:#13203B;background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1.2px);border-color:rgba(255,255,255,.28)}
.eco-ph-label{margin:12px;padding:6px 10px;border-radius:8px;background:#fff;color:#33384a;font-size:.7rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;line-height:1.3;border:1px solid #D8D2C3}
.eco-ph.dark .eco-ph-label{background:var(--ink);color:#f2c176;border-color:rgba(242,169,59,.35)}
.eco-ph svg{position:absolute;right:16px;top:16px;width:34px;height:34px;opacity:.45}
.eco-ph.r169{aspect-ratio:16/9;min-height:0}
.eco-ph.r43{aspect-ratio:4/3;min-height:0}
.eco-note{margin-top:22px;padding:14px 18px;border-radius:12px;background:#FFF6DD;border:1px solid #F1DFA8;color:#5a4300;font-size:.9rem;line-height:1.55}
.eco-note b{font-weight:700}
.a-dark .eco-note{background:rgba(242,169,59,.1);border-color:rgba(242,169,59,.35);color:#f3e3c3}

/* ---------- hero side panels (reuse .rv visual language) ---------- */
.eco-panel{width:100%;max-width:500px;justify-self:end;border-radius:20px;padding:24px 26px}
.eco-panel h2,.eco-panel .eco-ph-t{font-size:1rem;font-family:var(--font-body);font-weight:700;letter-spacing:0}
.eco-panel-h{display:flex;justify-content:space-between;gap:14px;align-items:flex-start;padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.12);margin-bottom:8px}
.t-light .eco-panel-h{border-color:var(--line-light)}
.eco-panel-h small{display:block;font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;font-weight:700;opacity:.7;margin-bottom:4px}
.eco-panel-h b{font-size:1.1rem;line-height:1.25}
.eco-chip{border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:4px 11px;font-size:.74rem;font-weight:700;white-space:nowrap}
.t-light .eco-chip{border-color:var(--line-light-2);background:var(--paper-panel-2)}
@media (max-width:1000px){.eco-panel{justify-self:start}}

/* partner map: stack18 core + six partner types */
.eco-map{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}
.eco-map a{display:flex;flex-direction:column;gap:2px;padding:12px 13px;border-radius:12px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.04);color:#fff;transition:border-color .2s,background .2s}
.eco-map a:hover,.eco-map a:focus-visible{border-color:var(--accent);background:rgba(242,169,59,.1)}
.eco-map b{font-size:.9rem}
.eco-map span{font-size:.76rem;color:#aab2c5}
.eco-core{grid-column:1/-1;text-align:center;padding:14px;border-radius:12px;border:1px solid rgba(242,169,59,.55);background:rgba(242,169,59,.1);color:#fff}
.eco-core b{display:block;font-size:1rem;letter-spacing:.04em}
.eco-core span{font-size:.78rem;color:#f3e3c3}

/* ---------- step journey ---------- */
.eco-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;counter-reset:es}
.eco-step{position:relative;padding:30px 26px 28px;border:1px solid var(--line-dark-2);background:var(--ink-panel)}
.eco-step+.eco-step{border-left:0}
.eco-step:first-child{border-radius:var(--eco-radius) 0 0 var(--eco-radius)}
.eco-step:last-child{border-radius:0 var(--eco-radius) var(--eco-radius) 0}
.eco-step::before{counter-increment:es;content:"0" counter(es);display:block;font-family:var(--font-display);font-size:2.2rem;font-weight:600;color:var(--accent);margin-bottom:10px;line-height:1}
.eco-step h3{color:#fff;font-size:1.15rem;margin-bottom:6px}
.eco-step p{color:var(--text-dark-muted);font-size:.92rem;line-height:1.6}
@media (max-width:900px){.eco-steps{grid-template-columns:minmax(0,1fr)}.eco-step,.eco-step:first-child,.eco-step:last-child{border-radius:0;border-left:1px solid var(--line-dark-2)}.eco-step+.eco-step{border-top:0}.eco-step:first-child{border-radius:var(--eco-radius) var(--eco-radius) 0 0}.eco-step:last-child{border-radius:0 0 var(--eco-radius) var(--eco-radius)}}

/* ---------- numbered feature rows (editorial list) ---------- */
.eco-rows{border-top:1px solid var(--line-light-2)}
.eco-row{display:grid;grid-template-columns:70px minmax(0,.9fr) minmax(0,1.4fr);gap:24px;align-items:baseline;padding:24px 0;border-bottom:1px solid var(--line-light-2);transition:background .2s,padding .2s}
.eco-row:hover{background:var(--paper-panel-2);padding-left:12px;padding-right:12px}
.eco-row .eco-n{font-size:.8rem;font-weight:700;letter-spacing:.1em;color:var(--accent-ink)}
.eco-row h3{font-size:1.2rem}
.eco-row p{color:var(--text-light-muted);font-size:.96rem;line-height:1.65}
.a-dark .eco-rows,.a-dark .eco-row{border-color:var(--line-dark-2)}
.a-dark .eco-row:hover{background:rgba(255,255,255,.04)}
.a-dark .eco-row h3{color:#fff}
.a-dark .eco-row p{color:var(--text-dark-muted)}
.a-dark .eco-row .eco-n{color:#f2c176}
@media (max-width:760px){.eco-row{grid-template-columns:44px minmax(0,1fr);gap:6px 14px}.eco-row p{grid-column:2}}

/* ---------- forms (extends .vx-form from style.css) ---------- */
.eco-form-wrap{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:48px;align-items:start}
.eco-form-wrap>*{min-width:0}
.eco-form-wrap h2{color:#fff;margin:6px 0 12px}
.eco-form-wrap>div>p{color:var(--text-dark-muted)}
.eco-list{display:grid;gap:10px;margin-top:22px}
.eco-list li{position:relative;padding-left:28px;color:#fff;font-size:.96rem}
.eco-list li::before{content:"✓";position:absolute;left:0;top:1px;width:20px;height:20px;border-radius:50%;display:grid;place-items:center;font-size:.7rem;font-weight:800;background:var(--accent);color:var(--ink)}
.eco-form .vx-priv,.eco-form .vx-form-note{font-size:.78rem}
.eco-form .req-note{grid-column:1/-1;font-size:.78rem;color:var(--text-light-muted);margin:-4px 0 0}
.eco-form label small{font-weight:400;color:var(--text-light-muted);font-size:.76rem}
.eco-form .is-bad{border-color:#e5484d!important;background:#fff5f5!important}
.eco-form.is-sent .vx-st{color:#15803d!important}
@media (max-width:900px){.eco-form-wrap{grid-template-columns:minmax(0,1fr);gap:32px}}

/* inline subscribe strip */
.eco-sub{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:center;padding:40px;border-radius:20px;background:var(--ink);color:var(--text-dark)}
.eco-sub h2{color:#fff;font-size:clamp(1.5rem,2.6vw,2.1rem);margin:6px 0 10px}
.eco-sub p{color:var(--text-dark-muted)}
.eco-sub form{display:flex;flex-wrap:wrap;gap:10px}
.eco-sub input[type=email]{flex:1 1 220px;min-width:0;font:inherit;padding:14px 16px;border-radius:10px;border:1px solid var(--line-dark-2);background:var(--ink-panel);color:#fff}
.eco-sub input[type=email]::placeholder{color:#7f89a3}
.eco-sub input[type=email]:focus{outline:2px solid var(--accent);outline-offset:1px}
.eco-sub .form-note{flex-basis:100%;font-size:.8rem;color:var(--text-dark-muted);margin:2px 0 0;min-height:1.2em}
@media (max-width:860px){.eco-sub{grid-template-columns:minmax(0,1fr);padding:28px 22px;gap:22px}}

/* =====================================================================
   EVENTS: editorial, light
   ===================================================================== */
.eco-feat{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:0;border:1px solid var(--line-light-2);border-radius:20px;overflow:hidden;background:#fff}
.eco-feat>*{min-width:0}
.eco-feat .eco-ph{border-radius:0;border:0;border-right:1px dashed #B9B09A;aspect-ratio:auto;min-height:340px;height:100%;width:100%}
.eco-feat-body{padding:36px 34px;display:flex;flex-direction:column;gap:14px}
.eco-feat-body h3{font-size:clamp(1.5rem,2.4vw,2rem);line-height:1.15}
.eco-feat-body p{color:var(--text-light-muted);line-height:1.7}
.eco-meta{display:grid;gap:0;border-top:1px solid var(--line-light);margin:4px 0}
.eco-meta div{display:grid;grid-template-columns:96px minmax(0,1fr);gap:12px;padding:11px 0;border-bottom:1px solid var(--line-light);font-size:.92rem}
.eco-meta dt{font-size:.7rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text-light-muted);padding-top:2px}
.eco-meta dd{margin:0;color:var(--text-light)}
.eco-meta .tbc{background:#FFF3B0;color:#5a4300;padding:1px 6px;border-radius:4px;font-weight:600}
.eco-status{display:inline-flex;align-items:center;gap:7px;align-self:flex-start;font-size:.7rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;padding:5px 11px;border-radius:999px;border:1px solid var(--line-light-2);background:var(--paper-panel-2);color:var(--text-light)}
.eco-status::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--sc,#9aa0b0)}
.eco-status.up{--sc:#2563eb}.eco-status.open{--sc:#16a34a}.eco-status.done{--sc:#8a8f9f}
.eco-statuskey{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:18px;font-size:.84rem;color:var(--text-light-muted)}
@media (max-width:900px){.eco-feat{grid-template-columns:minmax(0,1fr)}.eco-feat .eco-ph{border-right:0;border-bottom:1px dashed #B9B09A;aspect-ratio:16/9;min-height:0;height:auto}.eco-feat-body{padding:26px 22px}}

.eco-formats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border:1px solid var(--line-light-2);border-radius:var(--eco-radius);overflow:hidden;background:#fff}
.eco-format{padding:30px 26px;border-right:1px solid var(--line-light);border-bottom:1px solid var(--line-light);display:flex;flex-direction:column;gap:8px;transition:background .2s}
.eco-format:hover{background:var(--paper-panel-2)}
.eco-format:nth-child(3n){border-right:0}
.eco-format:nth-last-child(-n+3){border-bottom:0}
.eco-format .eco-n{font-family:var(--font-display);font-size:1.6rem;font-weight:600;color:var(--accent-ink);line-height:1}
.eco-format h3{font-size:1.12rem}
.eco-format p{color:var(--text-light-muted);font-size:.92rem;line-height:1.6}
@media (max-width:980px){.eco-formats{grid-template-columns:repeat(2,minmax(0,1fr))}.eco-format:nth-child(3n){border-right:1px solid var(--line-light)}.eco-format:nth-child(2n){border-right:0}.eco-format:nth-last-child(-n+3){border-bottom:1px solid var(--line-light)}.eco-format:nth-last-child(-n+2){border-bottom:0}}
@media (max-width:620px){.eco-formats{grid-template-columns:minmax(0,1fr)}.eco-format{border-right:0!important;border-bottom:1px solid var(--line-light)!important}.eco-format:last-child{border-bottom:0!important}}

.eco-filter{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.eco-filter button{font:inherit;font-size:.84rem;font-weight:600;padding:8px 16px;border-radius:999px;border:1px solid var(--line-light-2);background:#fff;color:var(--text-light);cursor:pointer;transition:all .15s}
.eco-filter button:hover{border-color:var(--ink)}
.eco-filter button[aria-pressed=true]{background:var(--ink);color:#fff;border-color:var(--ink)}
.eco-filter button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.eco-past{display:flex;flex-direction:column;gap:12px}
.eco-past[hidden]{display:none}
.eco-past h3{font-size:1.1rem}
.eco-past p{color:var(--text-light-muted);font-size:.92rem}
.eco-past .eco-ph{transition:transform .25s ease}
.eco-past:hover .eco-ph{transform:scale(1.015)}
.eco-past-meta{display:flex;flex-wrap:wrap;gap:8px 14px;font-size:.78rem;font-weight:600;color:var(--text-light-muted)}
.eco-empty{display:none;padding:28px;text-align:center;color:var(--text-light-muted);border:1px dashed var(--line-light-2);border-radius:12px}
.eco-empty.is-on{display:block}

/* =====================================================================
   COMMUNITY: people-first, warm
   ===================================================================== */
.eco-aud{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.eco-aud-item{display:flex;flex-direction:column;gap:6px;padding:22px 20px;border-radius:var(--eco-radius);background:#fff;border:1px solid var(--line-light);border-top:3px solid var(--accent);transition:transform .2s,box-shadow .2s}
.eco-aud-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.eco-aud-item h3{font-size:1.05rem}
.eco-aud-item p{font-size:.9rem;color:var(--text-light-muted);line-height:1.6}
@media (max-width:1100px){.eco-aud{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.eco-aud{grid-template-columns:minmax(0,1fr)}}

.eco-diff{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.3fr);gap:56px;align-items:start}
.eco-diff>*{min-width:0}
.eco-diff-list{display:grid;gap:0;border-top:1px solid var(--line-dark-2)}
.eco-diff-list li{display:grid;grid-template-columns:36px minmax(0,1fr);gap:14px;padding:18px 0;border-bottom:1px solid var(--line-dark-2);color:#fff;font-size:1rem;line-height:1.5}
.eco-diff-list li::before{content:"";width:10px;height:10px;margin-top:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 5px rgba(242,169,59,.18)}
.eco-diff-list li span{display:block;color:var(--text-dark-muted);font-size:.9rem;margin-top:3px}
@media (max-width:900px){.eco-diff{grid-template-columns:minmax(0,1fr);gap:28px}}

.eco-mosaic{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));grid-auto-rows:150px;gap:12px}
.eco-mosaic .eco-ph{min-height:0;height:100%}
.eco-mosaic .m1{grid-column:span 3;grid-row:span 2}
.eco-mosaic .m2{grid-column:span 3}
.eco-mosaic .m3{grid-column:span 3}
.eco-mosaic .m4,.eco-mosaic .m5,.eco-mosaic .m6{grid-column:span 2}
@media (max-width:760px){.eco-mosaic{grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-rows:130px}.eco-mosaic .m1{grid-column:span 2;grid-row:span 2}.eco-mosaic .m2,.eco-mosaic .m3,.eco-mosaic .m4,.eco-mosaic .m5,.eco-mosaic .m6{grid-column:span 1}}

/* =====================================================================
   STACK SCHOOL: catalogue + learning-path feel
   ===================================================================== */
.eco-tracks{counter-reset:tr;border-top:1px solid var(--line-dark-2)}
.eco-track{counter-increment:tr;display:grid;grid-template-columns:64px minmax(0,1fr) minmax(0,1.25fr);gap:22px;align-items:center;padding:24px 4px;border-bottom:1px solid var(--line-dark-2);transition:background .2s,padding .2s}
.eco-track::before{content:"0" counter(tr);font-family:var(--font-display);font-size:1.5rem;font-weight:600;color:var(--accent)}
.eco-track:hover{background:rgba(255,255,255,.04);padding-left:14px;padding-right:14px}
.eco-track h3{color:#fff;font-size:1.2rem}
.eco-track p{color:var(--text-dark-muted);font-size:.93rem;line-height:1.6}
@media (max-width:760px){.eco-track{grid-template-columns:44px minmax(0,1fr);gap:6px 12px}.eco-track p{grid-column:2}}

.eco-pill-row{display:flex;flex-wrap:wrap;gap:10px}
.eco-pill{padding:11px 18px;border-radius:999px;border:1px solid var(--line-light-2);background:#fff;font-weight:600;font-size:.92rem;transition:all .18s}
.eco-pill:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.a-dark .eco-pill{background:rgba(255,255,255,.04);border-color:var(--line-dark-2);color:#fff}
.a-dark .eco-pill:hover{background:var(--accent);color:var(--ink);border-color:var(--accent)}

.eco-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
.eco-split>*{min-width:0}
@media (max-width:900px){.eco-split{grid-template-columns:minmax(0,1fr);gap:28px}}
.eco-prose p{color:var(--text-light-muted);line-height:1.75;font-size:1.02rem;margin:0 0 14px}
.a-dark .eco-prose p{color:var(--text-dark-muted)}

.eco-learn{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.eco-learn li{display:flex;gap:12px;align-items:flex-start;padding:16px 18px;border-radius:12px;background:#fff;border:1px solid var(--line-light);font-weight:600;font-size:.96rem}
.eco-learn li::before{content:"";flex:none;width:9px;height:9px;margin-top:7px;border-radius:2px;background:var(--accent)}
.eco-learn li span{display:block;font-weight:400;color:var(--text-light-muted);font-size:.88rem;margin-top:2px}
.a-dark .eco-learn li{background:var(--ink-panel);border-color:var(--line-dark-2);color:#fff}
.a-dark .eco-learn li span{color:var(--text-dark-muted)}
@media (max-width:620px){.eco-learn{grid-template-columns:minmax(0,1fr)}}

/* code-window motif for the School hero */
.eco-term{white-space:pre-wrap;overflow-x:auto;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.84rem;line-height:1.75;color:#d8dbe8}
.eco-term .p{color:#f2c176}.eco-term .c{color:#7f89a3}.eco-term .ok{color:#86efac}
.eco-term-bar{display:flex;gap:6px;margin-bottom:14px}
.eco-term-bar i{width:9px;height:9px;border-radius:50%;background:#3a4560}

/* ---------- reveal on scroll (opt-in, respects reduced motion) ---------- */
.eco-js .eco-rv{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.eco-js .eco-rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.eco-js .eco-rv{opacity:1;transform:none;transition:none}.eco-card,.eco-aud-item,.eco-row,.eco-track,.eco-past .eco-ph{transition:none}}

/* small utility */
.eco-lede-sm{font-size:1.05rem;color:var(--text-light-muted);max-width:720px;line-height:1.7}
.eco-center{text-align:center}
.eco-center .a-head{margin-left:auto;margin-right:auto}
.eco-mt{margin-top:28px}
.eco-links{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:22px;font-size:.92rem}
.eco-links a{color:var(--accent-ink);font-weight:600;text-decoration:underline;text-underline-offset:3px}
.a-dark .eco-links a{color:#f2c176}