/* =========================================================
   Silk Robotics — About page (about.html). Loaded after style.css.
   ========================================================= */

.page-about { --c: var(--saffron); }

/* ---------- hero ---------- */
.ab-hero { position: relative; padding: calc(var(--nav-h) + 24px) 0 clamp(72px, 9vw, 120px); overflow: hidden; isolation: isolate; }
.ab-hero__bg {
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(45% 50% at 80% 70%, rgba(255,182,30,.13), transparent 65%),
    radial-gradient(40% 50% at 10% 85%, rgba(18,181,176,.14), transparent 65%),
    linear-gradient(180deg, var(--bg-deep), var(--bg));
}
.ab-title { margin: 18px 0 24px; max-width: 18ch; font-weight: 300; font-size: clamp(36px, 5vw, 64px); line-height: 1.06; letter-spacing: -.03em; text-wrap: balance; }
.ab-title b { font-weight: 800; background: none; color: var(--saffron); }
.ab-lead { max-width: 60ch; color: var(--text-dim); font-size: clamp(16px, 1.3vw, 19px); }

/* Silk Road route */
.route { position: relative; aspect-ratio: 1000 / 300; margin: clamp(40px, 6vw, 72px) 0 clamp(48px, 6vw, 72px); }
.route__svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.route__base { fill: none; stroke: rgba(170,182,255,.18); stroke-width: 2; stroke-dasharray: 2 8; stroke-linecap: round; }
.route__draw { fill: none; stroke: url(#routeGrad); stroke-width: 3; stroke-linecap: round; }
.route__future { fill: none; stroke: var(--saffron); stroke-width: 2; stroke-dasharray: 6 8; opacity: .8; }
@keyframes dash { to { stroke-dashoffset: -28; } }
@keyframes fadeUp { to { opacity: .8; } }
.route__dot { display: none; }
.route__nodes g { opacity: 1; }
@keyframes nodeIn { from { opacity: 0; transform: scale(.2); } to { opacity: 1; transform: none; } }
.route__nodes circle { fill: var(--turq-2); }
.route__nodes .route__ring { fill: none; stroke: rgba(67,227,218,.4); stroke-width: 1.5; }
.route__now circle { fill: var(--saffron); }
.route__now .route__ring { stroke: rgba(255,182,30,.55); }
@keyframes ringPulse { 0% { transform: scale(1); opacity: 1; } 100% { transform: scale(2.2); opacity: 0; } }
.route__label {
  position: absolute; display: grid; justify-items: center; gap: 2px; text-align: center; white-space: nowrap;
}
.route__label--below { transform: translate(-50%, 20px); }
.route__label--above { transform: translate(-50%, calc(-100% - 22px)); }
.route__label b { font-size: clamp(14px, 1.6vw, 22px); font-weight: 800; letter-spacing: -.01em; }
.route__label small { font: 500 11px var(--mono); letter-spacing: .08em; color: var(--text-faint); }
.route__label em { font-style: normal; font-size: 13px; font-weight: 600; color: var(--turq-2); }
.route__label--now b { color: var(--saffron); }
.route__label--now em { color: var(--saffron); }
.route__rocket { position: absolute; left: 97.5%; top: 4.7%; width: clamp(28px, 3.4vw, 44px); aspect-ratio: 1; color: var(--saffron); transform: translate(-50%, -50%) rotate(52deg); }
.route__rocket .art { width: 100%; height: 100%; stroke-width: 9; }
.route__next { position: absolute; right: 5%; top: -9%; font: 500 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--saffron); }

/* ---------- chapters ---------- */
.chapters { position: relative; display: grid; gap: 0; padding-left: 0; }
.chapters__line { position: absolute; top: 12px; bottom: 12px; left: 7px; width: 1px; background: var(--line); }
.chapters__line i { display: block; width: 100%; height: 100%; background: linear-gradient(var(--turq), var(--saffron)); transform-origin: top; transform: scaleY(var(--p, 0)); }
.chap { position: relative; display: grid; grid-template-columns: 240px 1fr 260px; gap: 32px; align-items: center; padding: 36px 0 36px 44px; border-bottom: 1px solid var(--line); }
.chap:last-child { border-bottom: 0; }
.chap__meta { display: flex; align-items: center; gap: 14px; }
.chap__dot { position: absolute; left: 0; top: 50%; width: 15px; height: 15px; margin-top: -8px; border-radius: 50%; border: 1px solid var(--line-strong); background: var(--bg); transition: background-color .5s, border-color .5s, box-shadow .5s; }
.chap.is-lit .chap__dot { border-color: var(--turq-2); background: var(--turq); box-shadow: 0 0 0 5px rgba(18,181,176,.15); }
.chap--now.is-lit .chap__dot { border-color: var(--saffron); background: var(--saffron); box-shadow: 0 0 0 6px rgba(255,182,30,.18), 0 0 24px rgba(255,182,30,.6); }
.chap__y { font: 500 13px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--turq-2); }
.chap--now .chap__y { color: var(--saffron); }
.chap__body h3 { font-size: clamp(26px, 2.6vw, 38px); font-weight: 800; letter-spacing: -.02em; line-height: 1.1; }
.chap__body p { margin-top: 10px; max-width: 46ch; color: var(--text-dim); font-size: 17px; }
.chap__art { height: 110px; display: grid; place-items: center; border-radius: 20px; border: 1px solid var(--line); background: var(--card); color: var(--text-faint); }
.chap__art svg { width: 80%; height: 80%; fill: none; stroke: currentColor; stroke-width: 1.4; }
.chap__art svg text { fill: currentColor; stroke: none; font: 500 14px var(--mono); }
.chap__art--eq { font: 400 clamp(20px, 2vw, 26px) var(--mono); letter-spacing: -.02em; color: var(--text-dim); }
.chap__art--logo svg { width: 64px; height: 64px; stroke-width: 2.4; }
.chap--now .chap__art { border-color: rgba(255,182,30,.35); background: linear-gradient(135deg, rgba(255,182,30,.1), transparent 70%); }

/* ---------- mission ---------- */
.ab-mission { overflow: hidden; background: var(--bg-deep); }
.mission { margin: 28px 0 clamp(56px, 7vw, 96px); max-width: 22ch; font-weight: 300; font-size: clamp(32px, 4.8vw, 72px); line-height: 1.08; letter-spacing: -.03em; text-wrap: balance; }
.mission b { font-weight: 800; color: var(--saffron); }

/* ---------- values ---------- */
.vals { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.val { position: relative; display: grid; gap: 12px; align-content: start; min-height: 300px; padding: 28px; border-radius: 24px; border: 1px solid var(--line); background: var(--card); overflow: hidden; transition: border-color .4s, opacity 1.1s var(--ease-out), transform 1.1s var(--ease-out); }
.val::after { content: ""; position: absolute; right: -40px; bottom: -40px; width: 160px; height: 160px; border-radius: 50%; background: radial-gradient(circle, color-mix(in srgb, var(--c) 30%, transparent), transparent 70%); opacity: .6; transition: transform .8s var(--ease-out); }
.val:hover { border-color: color-mix(in srgb, var(--c) 55%, transparent); }
.val:hover::after { transform: scale(1.4); }
.val__n { font: 500 12px var(--mono); letter-spacing: .12em; color: var(--text-faint); }
.val__art { width: 44px; height: 44px; margin: 16px 0 18px; color: var(--c); }
.val__art.art { stroke-width: 8; }
.val__art.ic { stroke-width: 1.6; }
.val__art--logo { fill: none; stroke-width: 2.4; }
.val h3 { font-size: 21px; font-weight: 800; letter-spacing: -.01em; }
.val p { position: relative; z-index: 1; color: var(--text-dim); font-size: 15px; }

/* ---------- team ---------- */
.ab-note { display: flex; align-items: center; gap: 10px; max-width: 34ch; font-size: 14px; color: var(--text-faint); }
.ab-note .ic { flex: none; color: var(--saffron); }
.team { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.member { display: grid; gap: 6px; align-content: start; transition: opacity 1.1s var(--ease-out), transform 1.1s var(--ease-out); }
.member__ph {
  position: relative; aspect-ratio: 4 / 5; margin-bottom: 10px; display: grid; place-items: center; border-radius: 22px; overflow: hidden; color: var(--c);
  border: 1px solid var(--line);
  background:
    radial-gradient(70% 60% at 50% 100%, color-mix(in srgb, var(--c) 30%, transparent), transparent 70%),
    linear-gradient(160deg, #141C48, #0A0F2A);
}
.member__ph::before { content: ""; position: absolute; inset: 0; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='56' fill='none' stroke='%23AAB6FF' stroke-opacity='.10'%3E%3Cpath d='M19 19h18v18H19z'/%3E%3Cpath d='M28 15.27 40.73 28 28 40.73 15.27 28z'/%3E%3C/svg%3E"); }
.member__ph .ic { position: relative; width: 34px; height: 34px; stroke-width: 1.4; opacity: .8; }
.member__name { font: 500 12px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--text-faint); }
.member__name::before { content: "["; } .member__name::after { content: "]"; }
.member h3 { font-size: 17px; font-weight: 700; line-height: 1.3; }
.member--join { place-content: center; justify-items: center; gap: 12px; padding: 24px; text-align: center; text-decoration: none; border-radius: 22px; border: 1px dashed var(--line-strong); transition: border-color .4s, background-color .4s, opacity 1.1s var(--ease-out), transform 1.1s var(--ease-out); }
.member--join:hover { border-color: var(--saffron); background: rgba(255,182,30,.05); }
.member--join p { font-size: 14px; color: var(--text-dim); }
.member__plus { width: 56px; height: 56px; display: grid; place-items: center; border-radius: 50%; background: var(--saffron); color: var(--ink); transition: transform .6s var(--ease-out); }
.member--join:hover .member__plus { transform: rotate(90deg); }

/* ---------- partners ---------- */
.partner {
  position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(32px, 5vw, 72px); align-items: center;
  padding: clamp(32px, 5vw, 72px); border-radius: clamp(28px, 4vw, 44px); overflow: hidden; isolation: isolate;
  border: 1px solid rgba(255,182,30,.28);
  background: radial-gradient(60% 80% at 100% 0%, rgba(255,182,30,.14), transparent 60%), radial-gradient(60% 80% at 0% 100%, rgba(18,181,176,.14), transparent 60%), #0B1236;
}
.partner__orbits { left: 78%; top: 50%; z-index: -1; opacity: .7; }
.partner__copy { display: grid; gap: 20px; }
.partner__side { display: grid; gap: 24px; }
.partner__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.partner__list li { display: flex; align-items: center; gap: 14px; padding: 14px 16px; border-radius: 16px; border: 1px solid var(--line); background: rgba(13,19,48,.6); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); font-weight: 600; }
.partner__list .ic { color: var(--saffron); }
.partner__ctas { margin-top: 0; }

/* ---------- contact ---------- */
.ct-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 24px; align-items: stretch; }
.ct-list { display: grid; gap: 10px; align-content: start; }
.ct { display: flex; align-items: center; gap: 16px; min-height: 76px; padding: 14px 18px; border-radius: 18px; border: 1px solid var(--line); background: var(--card); text-decoration: none; transition: border-color .3s, background-color .3s, opacity 1.1s var(--ease-out), transform 1.1s var(--ease-out); }
a.ct:hover { border-color: rgba(255,182,30,.5); background: rgba(255,182,30,.05); }
.ct__ic { width: 48px; height: 48px; flex: none; display: grid; place-items: center; border-radius: 14px; background: rgba(255,182,30,.12); color: var(--saffron); }
.ct__body { display: grid; gap: 2px; min-width: 0; }
.ct__body small { font: 500 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--text-faint); }
.ct__body b { font-size: 17px; font-weight: 700; overflow-wrap: anywhere; }
.ct__body small + b + small { text-transform: none; letter-spacing: .02em; font-size: 12px; }
.ct__go { display: inline-flex; align-items: center; gap: 6px; margin-left: auto; font-weight: 600; font-size: 14px; color: var(--text-dim); }
.ct__go .ic { transition: transform .35s var(--ease-out); }
a.ct:hover .ct__go .ic { transform: translate(3px, -3px); }

.map { position: relative; min-height: 420px; border-radius: 26px; overflow: hidden; border: 1px solid var(--line); background: #0A0F2A; }
.map__svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.map__river { fill: none; stroke: rgba(18,181,176,.45); stroke-width: 10; stroke-linecap: round; }
.map__road { fill: none; stroke: rgba(170,182,255,.22); stroke-width: 5; stroke-linecap: round; }
.map__road--thin { stroke-width: 2.5; stroke-dasharray: 6 8; }
.map__ring { fill: none; stroke: rgba(255,182,30,.3); stroke-width: 1.5; }
.map__ring--2 { animation-delay: 1.5s; }
.map__pin { position: absolute; left: 50%; top: 50%; width: 56px; height: 56px; display: grid; place-items: center; transform: translate(-50%, -50%); border-radius: 50%; background: var(--bg-deep); border: 1px solid rgba(255,182,30,.5); }
.map__pin svg { width: 34px; height: 34px; fill: none; stroke-width: 2.6; }
.map__card { position: absolute; left: 20px; bottom: 20px; display: grid; gap: 4px; padding: 16px 18px; border-radius: 16px; border: 1px solid var(--line-strong); background: rgba(10,14,38,.85); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.map__card b { font-size: 20px; font-weight: 800; }
.map__card small { font: 500 12px var(--mono); color: var(--text-faint); }
.map__card .link-arrow { min-height: 36px; font-size: 14px; color: var(--saffron); }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .chap { grid-template-columns: 200px 1fr; }
  .chap__art { display: none; }
  .vals { grid-template-columns: repeat(2, 1fr); }
  .team { grid-template-columns: repeat(3, 1fr); }
  .partner, .ct-grid { grid-template-columns: 1fr; }
}
@media (max-width: 767px) {
  .route { margin-bottom: 64px; }
  .route__label small, .route__label em { display: none; }
  .route__label b { font-size: 13px; }
  .route__next { top: auto; bottom: -28px; right: 0; font-size: 10px; }
  .chap { grid-template-columns: 1fr; gap: 10px; padding: 28px 0 28px 36px; }
  .chap__dot { top: 34px; margin-top: 0; }
  .vals { grid-template-columns: 1fr; }
  .val { min-height: 0; }
  .team { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .member h3 { font-size: 15px; }
  .member--join { grid-column: 1 / -1; }
  .map { min-height: 320px; }
  .ct__go span { display: none; }
}

/* calmer cards: text first, small icons */
.val { min-height: 0; padding: 24px; }
.val::after { display: none; }
.member { padding-top: 16px; border-top: 1px solid var(--line-strong); }
.member--join { padding: 20px; }
.member__plus { width: 40px; height: 40px; }
.ct { min-height: 64px; }
.ct__ic { width: auto; height: auto; background: none; color: var(--text-dim); }

/* new logo mark */
.chap__art--logo { color: var(--text); }
.chap__art--logo svg { width: 78%; height: auto; stroke: none; }
.map__pin { width: 72px; height: 72px; color: #fff; }
.map__pin svg { width: 48px; height: auto; stroke: none; }