/* ---------- homepage sections: editorial, each with its own composition ---------- */
#content { position: relative; }
#content:focus { outline: none; }

/* 2 - what is Cerylex: statement + four pillars as a ruled list, not cards */
.what__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr); gap: clamp(2.5rem, 7vw, 7rem); align-items: start; }
.what__lead { position: sticky; top: calc(var(--header-h) + 2rem); display: grid; gap: var(--s-4); justify-items: start; }
.what__lead .arrow-link { margin-top: var(--s-3); }
.pillars { counter-reset: p; border-top: 1px solid var(--line-strong); }
.pillars li { position: relative; display: grid; grid-template-columns: 6.5rem minmax(0, 1fr); gap: 0.3rem 1.5rem; padding: clamp(1.4rem, 3vw, 2.2rem) 0; border-bottom: 1px solid var(--line); }
.pillars__en { grid-row: 1 / 3; font-family: var(--font-display); font-style: italic; font-variation-settings: "SOFT" 100; font-size: 1.02rem; color: var(--c, var(--peach)); padding-top: 0.5rem; }
.pillars li:nth-child(1) { --c: var(--pink); } .pillars li:nth-child(2) { --c: #a98bff; } .pillars li:nth-child(3) { --c: var(--cyan); } .pillars li:nth-child(4) { --c: var(--peach); }
.pillars h3 { font-size: var(--fs-4); font-weight: 700; }
.pillars p { color: var(--text-2); max-width: 30rem; }

/* 3 - ecosystem map */
.eco { position: relative; aspect-ratio: 1000 / 560; margin-inline: auto; max-width: 68rem; }
.eco__lines { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.eco__spoke { fill: none; stroke: url(#ecog); stroke-width: 1.4; opacity: 0.55; vector-effect: non-scaling-stroke; }
.eco__flow { fill: none; stroke: var(--gold); stroke-width: 1.2; stroke-dasharray: 2 9; stroke-linecap: round; opacity: 0.8; vector-effect: non-scaling-stroke; animation: flow 5s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -110; } }
.eco__core { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); display: grid; place-items: center; align-content: center; gap: 0.1rem; width: clamp(8.5rem, 16vw, 12rem); aspect-ratio: 1; border-radius: 50%; text-decoration: none; color: var(--text); text-align: center; background: radial-gradient(circle at 35% 30%, rgba(243, 90, 173, 0.34), rgba(135, 87, 250, 0.24) 45%, rgba(16, 16, 29, 0.9) 75%); border: 1px solid var(--line-strong); box-shadow: 0 0 80px -10px rgba(135, 87, 250, 0.55), var(--shadow-1); transition: box-shadow var(--t-med); }
.eco__core:hover { box-shadow: 0 0 110px -6px rgba(243, 90, 173, 0.6), var(--shadow-1); }
.eco__core b { font-family: var(--font-display); font-variation-settings: "SOFT" 100; font-size: clamp(1.5rem, 2.6vw, 2.1rem); font-weight: 450; line-height: 1.1; }
.eco__core span { font-size: var(--fs-00); color: var(--text-2); letter-spacing: 0.14em; }
.eco__nodes { position: absolute; inset: 0; }
.eco__node { position: absolute; left: var(--x); top: var(--y); transform: translate(-50%, -50%); }
.eco__node a { display: grid; justify-items: center; gap: 0.2rem; min-width: 8.2rem; padding: 0.75rem 1rem 0.8rem; border-radius: var(--r-2); text-decoration: none; color: var(--text); text-align: center; background: rgba(16, 16, 29, 0.82); border: 1px solid var(--line); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); transition: border-color var(--t-fast), transform var(--t-med) var(--ease-out), background var(--t-fast); }
.eco__node a:hover { border-color: var(--line-strong); transform: translateY(-3px); background: rgba(32, 32, 58, 0.9); }
.eco__node b { font-family: var(--font-serif-tc); font-size: 1.12rem; font-weight: 700; line-height: 1.3; white-space: nowrap; }
.eco__node span:not(.tag) { font-size: var(--fs-00); color: var(--text-3); letter-spacing: 0.1em; }
.eco__node .tag { margin-top: 0.3rem; }
.eco__legend { margin-top: var(--s-6); text-align: center; }
@media (max-width: 860px) {
  .eco { aspect-ratio: auto; display: grid; gap: 0.7rem; padding-left: 1.4rem; border-left: 1px solid; border-image: linear-gradient(180deg, var(--pink), var(--violet), var(--cyan)) 1; }
  .eco__lines { display: none; }
  .eco__core { position: static; transform: none; width: auto; aspect-ratio: auto; border-radius: var(--r-2); padding: 1.1rem; justify-items: start; text-align: left; }
  .eco__nodes { position: static; display: grid; gap: 0.7rem; }
  .eco__node { position: static; transform: none; }
  .eco__node a { grid-template-columns: minmax(0, 1fr) auto; justify-items: start; text-align: left; align-items: center; min-width: 0; padding: 0.9rem 1rem; }
  .eco__node a:hover { transform: none; }
  .eco__node span:not(.tag) { grid-column: 1; }
  .eco__node .tag { grid-column: 2; grid-row: 1 / 3; margin: 0; }
  .eco__legend { text-align: left; }
}

/* 4 - featured projects */
.feat__lead { position: relative; display: grid; }
.feat__media { display: block; border-radius: var(--r-3); overflow: hidden; background: var(--ink-700); box-shadow: var(--shadow-2); }
.feat__media img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform 1.6s var(--ease-out); }
.feat__media:hover img { transform: scale(1.025); }
.feat__text { position: relative; z-index: 1; width: min(33rem, 100% - 2rem); margin: clamp(-11rem, -14vw, -5rem) 0 0 clamp(1rem, 4vw, 4rem); padding: clamp(1.4rem, 3vw, 2.4rem); display: grid; gap: var(--s-3); justify-items: start; border-radius: var(--r-3); background: rgba(13, 13, 25, 0.86); border: 1px solid var(--line); -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px); box-shadow: var(--shadow-2); }
.feat__text h3, .feat__note h3 { font-size: var(--fs-4); font-weight: 800; }
.feat__text p { color: var(--text-2); }
.feat__facts { display: grid; gap: 0.5rem; margin: var(--s-2) 0; width: 100%; }
.feat__facts div { display: grid; grid-template-columns: 3.2rem minmax(0, 1fr); gap: 0.9rem; padding-top: 0.5rem; border-top: 1px solid var(--line); font-size: var(--fs-0); line-height: 1.65; }
.feat__facts dt { color: var(--peach); letter-spacing: 0.08em; }
.feat__facts dd { margin: 0; color: var(--text-2); }
.feat__pair { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr); gap: clamp(1.25rem, 3vw, 2.5rem); margin-top: clamp(1.5rem, 4vw, 3.5rem); align-items: stretch; }
.feat__note { display: grid; gap: var(--s-3); justify-items: start; align-content: start; padding: clamp(1.5rem, 3.4vw, 2.75rem); border-radius: var(--r-3); border: 1px solid var(--line); background: linear-gradient(160deg, rgba(135, 87, 250, 0.16), rgba(16, 16, 29, 0.72) 55%); }
.feat__quote { font-family: var(--font-serif-tc); font-size: var(--fs-3); font-weight: 700; line-height: 1.5; color: var(--text); }
.feat__note > p:not(.feat__quote) { color: var(--text-2); }
.loop { display: flex; flex-wrap: wrap; gap: 0.4rem 0; margin: var(--s-2) 0; font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-2); }
.loop li { display: flex; align-items: center; }
.loop li + li::before { content: "→"; margin: 0 0.5rem; color: var(--text-3); }
.loop li:last-child { color: var(--gold); }
.feat__side { display: grid; grid-template-rows: auto 1fr; border-radius: var(--r-3); overflow: hidden; border: 1px solid var(--line); background: rgba(16, 16, 29, 0.72); }
.feat__side > a { display: block; background: #ece3d6; overflow: hidden; }
.feat__side img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; object-position: 50% 58%; transition: transform 1.6s var(--ease-out); }
.feat__side > a:hover img { transform: scale(1.03); }
.feat__side > div { display: grid; gap: var(--s-2); justify-items: start; padding: clamp(1.2rem, 2.6vw, 2rem); }
.feat__side h3 { font-size: var(--fs-3); }
.feat__side p { color: var(--text-2); }
.feat__more { margin-top: var(--s-6); }
@media (max-width: 760px) {
  .feat__text { width: auto; margin: -2.5rem 0.75rem 0; }
  .feat__pair { grid-template-columns: 1fr; }
}

/* 5 - gallery mosaic + evolution diptych */
.mosaic { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); grid-auto-rows: clamp(5.5rem, 9.5vw, 9.5rem); gap: clamp(0.5rem, 1vw, 0.9rem); }
.mosaic__tile { position: relative; display: block; overflow: hidden; border-radius: var(--r-2); background: var(--ink-700); color: #fff; }
.mosaic__tile img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.4s var(--ease-out), filter var(--t-med); }
.mosaic__tile span { position: absolute; left: 0; right: 0; bottom: 0; padding: 2.2rem 1rem 0.8rem; font-size: var(--fs-0); letter-spacing: 0.06em; background: linear-gradient(180deg, transparent, rgba(6, 6, 13, 0.82)); opacity: 0; transform: translateY(6px); transition: opacity var(--t-med), transform var(--t-med) var(--ease-out); }
.mosaic__tile:hover img, .mosaic__tile:focus-visible img { transform: scale(1.045); }
.mosaic__tile:hover span, .mosaic__tile:focus-visible span { opacity: 1; transform: none; }
@media (hover: none) { .mosaic__tile span { opacity: 1; transform: none; } }
.mosaic__tile--a { grid-column: 1 / 8; grid-row: 1 / 5; }
.mosaic__tile--b { grid-column: 8 / 13; grid-row: 1 / 4; }
.mosaic__tile--c { grid-column: 8 / 13; grid-row: 4 / 7; }
.mosaic__tile--d { grid-column: 1 / 4; grid-row: 5 / 7; }
.mosaic__tile--e { grid-column: 4 / 8; grid-row: 5 / 7; }
.evo { margin-block: clamp(2.5rem, 6vw, 5rem) var(--s-5); }
.evo__pair { display: grid; grid-template-columns: minmax(0, 0.42fr) auto minmax(0, 1fr); gap: clamp(0.8rem, 2.4vw, 2rem); align-items: center; max-width: 60rem; }
.evo__item { position: relative; border-radius: var(--r-2); overflow: hidden; background: var(--ink-700); }
.evo__item img { width: 100%; }
.evo__tag { position: absolute; left: 0.6rem; top: 0.6rem; padding: 0.15rem 0.55rem; border-radius: var(--r-pill); background: rgba(6, 6, 13, 0.78); font-size: 0.72rem; color: var(--text); }
.evo__arrow { font-size: 1.6rem; color: var(--peach); }
.evo figcaption { margin-top: var(--s-4); color: var(--text-2); max-width: 44rem; }
.evo figcaption b { color: var(--text); font-family: var(--font-serif-tc); }
.gal .note { margin-bottom: var(--s-5); }
@media (max-width: 760px) {
  .mosaic { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-auto-rows: auto; }
  .mosaic__tile { grid-column: auto !important; grid-row: auto !important; aspect-ratio: 4 / 3; }
  .mosaic__tile--a { grid-column: 1 / -1 !important; aspect-ratio: 16 / 9; }
  .evo__pair { grid-template-columns: 1fr; justify-items: start; }
  .evo__item:first-child { width: 58%; }
  .evo__arrow { transform: rotate(90deg); margin-left: 1rem; }
}

/* 6 - products: rows */
.plist { border-top: 1px solid var(--line-strong); margin-bottom: var(--s-5); }
.plist a { display: grid; grid-template-columns: minmax(8rem, 0.9fr) minmax(7rem, 0.7fr) minmax(0, 2fr) auto 1.5rem; gap: var(--s-4); align-items: center; padding: 1.25rem 0.5rem; border-bottom: 1px solid var(--line); color: var(--text); text-decoration: none; transition: background var(--t-fast), padding var(--t-med) var(--ease-out); }
.plist a:hover { background: rgba(255, 255, 255, 0.035); padding-inline: 1rem; }
.plist__name { font-family: var(--font-serif-tc); font-size: var(--fs-3); font-weight: 700; line-height: 1.3; }
.plist__role { color: var(--peach); font-size: var(--fs-0); letter-spacing: 0.06em; }
.plist__use { color: var(--text-2); font-size: 0.95rem; line-height: 1.7; }
.plist__go { color: var(--text-3); transition: transform var(--t-med) var(--ease-out), color var(--t-fast); }
.plist a:hover .plist__go { transform: translateX(4px); color: var(--peach); }
@media (max-width: 860px) {
  .plist a { grid-template-columns: minmax(0, 1fr) auto; gap: 0.3rem 1rem; padding: 1.1rem 0.25rem; }
  .plist__name { grid-column: 1; } .plist a .tag { grid-column: 2; grid-row: 1; justify-self: end; }
  .plist__role, .plist__use { grid-column: 1 / -1; }
  .plist__go { display: none; }
}

/* 7 - milestones */
.mile__grid { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.mile .section__head { position: sticky; top: calc(var(--header-h) + 2rem); margin: 0; }
.timeline { position: relative; display: grid; gap: clamp(1.6rem, 3vw, 2.4rem); padding-left: 1.75rem; }
.timeline::before { content: ""; position: absolute; left: 0.3rem; top: 0.6rem; bottom: 0.2rem; width: 1px; background: linear-gradient(180deg, var(--peach), var(--pink) 30%, var(--violet) 65%, transparent); }
.timeline li { position: relative; display: grid; gap: 0.25rem; }
.timeline li::before { content: ""; position: absolute; left: -1.75rem; top: 0.55rem; width: 0.65rem; height: 0.65rem; border-radius: 50%; background: var(--ink-800); box-shadow: 0 0 0 1.5px var(--peach), 0 0 14px rgba(255, 174, 114, 0.6); }
.timeline time { color: var(--peach); }
.timeline h3 { font-size: var(--fs-3); font-weight: 700; }
.timeline p { color: var(--text-2); }
.next { margin-top: clamp(2rem, 4vw, 3rem); padding: clamp(1.2rem, 2.6vw, 1.8rem); border: 1px dashed var(--line-strong); border-radius: var(--r-3); }
.next h3 { font-size: var(--fs-2); margin-bottom: var(--s-3); }
.next ul { display: grid; gap: 0.75rem; }
.next li { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 0.15rem 0.8rem; align-items: baseline; }
.next li b { font-weight: 600; }
.next li span:last-child { grid-column: 2; color: var(--text-2); font-size: 0.95rem; }
@media (max-width: 860px) {
  .what__grid, .mile__grid { grid-template-columns: 1fr; }
  .what__lead, .mile .section__head { position: static; }
  .pillars li { grid-template-columns: 1fr; }
  .pillars__en { grid-row: auto; padding: 0; }
}

/* 8 - downloads callout */
.start__panel { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--s-6); align-items: end; padding: clamp(1.6rem, 5vw, 4rem); background: linear-gradient(135deg, rgba(255, 174, 114, 0.13), rgba(23, 23, 41, 0.78) 45%); }
.start__panel > div:first-child { display: grid; gap: var(--s-3); }
.start__actions { display: flex; flex-wrap: wrap; gap: 0.8rem; }
@media (max-width: 860px) { .start__panel { grid-template-columns: 1fr; } }

/* 9 - docs + faq */
.help__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.help__grid > div:first-child { display: grid; gap: var(--s-5); }
.guides { display: grid; border-top: 1px solid var(--line-strong); }
.guides a { display: grid; gap: 0.2rem; padding: 1.1rem 0; border-bottom: 1px solid var(--line); text-decoration: none; color: var(--text); }
.guides a b { font-family: var(--font-serif-tc); font-size: var(--fs-2); }
.guides a span { color: var(--text-2); font-size: 0.95rem; line-height: 1.75; }
.guides a:hover b { color: var(--peach); }
.faq { display: grid; gap: 0.6rem; }
.faq details { border: 1px solid var(--line); border-radius: var(--r-2); background: rgba(16, 16, 29, 0.6); }
.faq summary { display: flex; justify-content: space-between; gap: 1rem; padding: 1.05rem 1.2rem; cursor: pointer; font-weight: 600; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--peach); font-family: var(--font-mono); transition: transform var(--t-med) var(--ease-out); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 1.2rem 1.15rem; color: var(--text-2); }
@media (max-width: 860px) { .help__grid { grid-template-columns: 1fr; } }