/* ============================================================
   AMBIENT — BEYOND CLOUD COMPUTING
   Narrative longscroll stylesheet (extends styles.css)
   ============================================================ */

.bc-hero{
  position:relative;overflow:hidden;color:white;text-align:center;
  padding:150px 0 130px;
  background:
   radial-gradient(circle at 78% 18%,rgba(37,201,241,.20),transparent 32%),
   radial-gradient(circle at 18% 80%,rgba(116,70,231,.22),transparent 34%),
   linear-gradient(180deg,#040d28,#07163e 60%,#0a1c4e);
}
.bc-hero:before{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:1050px;height:1050px;border-radius:50%;
  border:1px solid rgba(110,203,255,.14);
  box-shadow:0 0 0 130px rgba(64,128,244,.045),0 0 0 260px rgba(64,128,244,.03),0 0 0 390px rgba(118,82,238,.025);
  pointer-events:none;
}
.bc-hero .wrap{position:relative;z-index:2}
.bc-hero-mark{width:96px;height:96px;margin:0 auto 34px;display:block;filter:drop-shadow(0 18px 45px rgba(30,120,240,.45))}
.bc-hero .kicker{color:#6ecbff;letter-spacing:.22em}
.bc-hero h1{font-size:clamp(52px,7vw,102px);letter-spacing:-.045em;line-height:1.0;margin:10px auto 0;max-width:1000px}
.bc-hero h1 span{background:linear-gradient(90deg,#2bc9f1,#4f7bf5 45%,#8a5cf0);-webkit-background-clip:text;background-clip:text;color:transparent}
.bc-thesis{font-size:clamp(22px,2.6vw,32px);font-weight:750;letter-spacing:-.02em;margin:30px auto 0;color:#dbe8ff}
.bc-hero-lede{color:#9fb4e2;font-size:18px;max-width:680px;margin:22px auto 0;line-height:1.65}
.bc-hero-actions{display:flex;gap:12px;justify-content:center;margin-top:40px;flex-wrap:wrap}
.bc-scroll-hint{margin-top:70px;font-size:11px;letter-spacing:.2em;font-weight:850;color:#5f78b5}
.bc-scroll-hint:after{content:"↓";display:block;font-size:19px;margin-top:8px;animation:bcFloat 2.2s ease-in-out infinite}
@keyframes bcFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(7px)}}

/* ---------- shared narrative primitives ---------- */
.bc-section{padding:110px 0}
.bc-num{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:850;letter-spacing:.18em;color:#2867ed;margin-bottom:16px}
.bc-num:before{content:"";width:34px;height:2px;background:linear-gradient(90deg,#22c8f4,#7652ee);border-radius:2px}
.bc-dark .bc-num{color:#6ecbff}
.bc-section h2{font-size:clamp(38px,4.4vw,62px);letter-spacing:-.045em;line-height:1.04;margin:0 0 22px;max-width:850px}
.bc-lede{font-size:18px;color:var(--muted);max-width:700px;line-height:1.7;margin:0 0 18px}
.bc-dark{background:#07163e;color:white}
.bc-darker{background:
 radial-gradient(circle at 82% 30%,rgba(28,160,255,.20),transparent 30%),
 radial-gradient(circle at 15% 75%,rgba(120,75,235,.18),transparent 28%),
 #030d2a;color:white}
.bc-dark .bc-lede,.bc-darker .bc-lede{color:#b9c8e9}
.bc-quote{font-size:clamp(24px,2.8vw,36px);font-weight:750;letter-spacing:-.025em;line-height:1.25;max-width:820px;margin:34px 0 0}
.bc-quote em{font-style:normal;background:linear-gradient(90deg,#1067f4,#7253ef);-webkit-background-clip:text;background-clip:text;color:transparent}
.bc-dark .bc-quote em,.bc-darker .bc-quote em{background:linear-gradient(90deg,#2bc9f1,#8a5cf0);-webkit-background-clip:text;background-clip:text;color:transparent}
.bc-grid2{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}

/* reveal on scroll */
.bc-reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.bc-reveal.in{opacity:1;transform:none}

/* ---------- 01 · the three eras ---------- */
.era-track{display:grid;grid-template-columns:1fr auto 1fr auto 1.15fr;gap:0;align-items:stretch;margin-top:54px}
.era{border:1px solid var(--line);border-radius:24px;padding:34px 30px;background:white;position:relative}
.era .tiny-label{color:#7a88a8}
.era h3{font-size:26px;letter-spacing:-.03em;margin:12px 0 8px}
.era p{font-size:14px;color:var(--muted);margin:0;line-height:1.6}
.era-glyph{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;font-size:22px;margin-bottom:18px;background:#eef3fd;color:#2f61c9}
.era-arrow{display:grid;place-items:center;padding:0 16px;color:#b6c4e2;font-size:26px}
.era-now{background:linear-gradient(145deg,#07194a,#1a48ad);color:white;border-color:transparent;box-shadow:0 24px 60px rgba(16,60,170,.35)}
.era-now .era-glyph{background:rgba(255,255,255,.12);color:#7fd6ff}
.era-now h3{color:white}
.era-now p{color:#c9daff}
.era-now .tiny-label{color:#7fd6ff}
.era-claim{margin-top:44px;display:grid;grid-template-columns:1fr 1fr;gap:26px}
.era-claim article{border-left:3px solid #e2e9f7;padding:6px 0 6px 24px}
.era-claim strong{display:block;font-size:17px;margin-bottom:6px}
.era-claim p{font-size:14px;color:var(--muted);margin:0;line-height:1.65}
.era-claim .flip{border-color:#2b6cf0}

/* ---------- 02 · fragmentation ---------- */
.frag-visual{position:relative;min-height:430px;border-radius:30px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.03);overflow:hidden}
.frag-box{position:absolute;width:150px;border-radius:16px;border:1px solid rgba(255,255,255,.2);background:rgba(9,26,72,.85);padding:14px 16px;box-shadow:0 16px 40px rgba(0,0,0,.35)}
.frag-box strong{display:block;font-size:13px;margin-bottom:8px;color:#cfe0ff}
.frag-box span{display:block;font-size:10px;letter-spacing:.08em;color:#7a90c4;padding:3px 0;border-top:1px solid rgba(255,255,255,.08)}
.fb1{left:6%;top:10%}.fb2{right:8%;top:6%;width:160px}.fb3{left:12%;bottom:12%}.fb4{right:14%;bottom:10%}.fb5{left:41%;top:36%;width:160px;opacity:.95}
.frag-caption{position:absolute;left:0;right:0;bottom:0;padding:14px;text-align:center;font-size:11px;letter-spacing:.14em;font-weight:850;color:#6b83bd;background:linear-gradient(0deg,rgba(3,13,42,.9),transparent)}

/* ---------- 03 · MSCAN ---------- */
.mscan-row{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:52px}
.mscan-cell{border-radius:22px;padding:30px 24px;color:white;position:relative;overflow:hidden;min-height:210px;display:flex;flex-direction:column}
.mscan-cell:after{content:"";position:absolute;width:150px;height:150px;border-radius:50%;right:-55px;bottom:-65px;border:1px solid rgba(255,255,255,.22)}
.mscan-cell .letter{font-size:56px;font-weight:850;letter-spacing:-.04em;line-height:1}
.mscan-cell h4{margin:10px 0 6px;font-size:17px;letter-spacing:.06em}
.mscan-cell p{margin:auto 0 0;font-size:12.5px;color:rgba(255,255,255,.82);line-height:1.55}
.ms-m{background:linear-gradient(150deg,#22c9f4,#1e7bf0)}
.ms-s{background:linear-gradient(150deg,#1e7bf0,#3159e6)}
.ms-c{background:linear-gradient(150deg,#3159e6,#5a51e2)}
.ms-a{background:linear-gradient(150deg,#5a51e2,#7c4be9)}
.ms-n{background:linear-gradient(150deg,#7c4be9,#9a4ce6)}
.mscan-flip{margin-top:46px;display:grid;grid-template-columns:1fr 1fr;gap:20px}
.mscan-flip article{border-radius:22px;padding:30px 32px;border:1px solid var(--line);background:white}
.mscan-flip .q{font-size:12px;font-weight:850;letter-spacing:.12em;color:#7a88a8;display:block;margin-bottom:10px}
.mscan-flip p{font-size:19px;font-weight:700;letter-spacing:-.02em;margin:0;line-height:1.4}
.mscan-flip .after{background:linear-gradient(145deg,#07194a,#173e9d);color:white;border-color:transparent}
.mscan-flip .after .q{color:#7fd6ff}

/* resolution flow */
.res-flow{margin-top:60px;display:grid;gap:0;justify-items:center}
.res-node{border-radius:16px;padding:15px 34px;font-weight:800;font-size:14px;letter-spacing:.04em;background:white;border:1px solid var(--line);box-shadow:0 10px 26px rgba(10,37,92,.08)}
.res-node.hub{background:linear-gradient(135deg,#0d63f6,#6b4fe9);color:white;border-color:transparent}
.res-link{width:2px;height:34px;background:linear-gradient(180deg,#c4d2ec,#8fa8d8)}
.res-branch{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;width:min(680px,100%);margin-top:0}
.res-branch span{border-radius:14px;border:1px dashed #b9c8e6;padding:12px;text-align:center;font-size:12px;font-weight:800;letter-spacing:.08em;color:#3b529f;background:#f6f9ff}
.res-providers{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;width:min(760px,100%);margin-top:14px}
.res-providers span{border-radius:999px;padding:9px 16px;font-size:11.5px;font-weight:800;background:#eaf1ff;color:#2d55c4}
.res-note{margin-top:34px;text-align:center;font-size:15px;color:var(--muted);max-width:620px}
.res-note strong{color:var(--ink)}

/* ---------- 04-05 · eVM / progression ---------- */
.evm-stack{display:grid;gap:12px;max-width:460px}
.evm-slab{border-radius:18px;padding:22px 26px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05)}
.evm-slab span{font-size:10px;letter-spacing:.14em;font-weight:850;color:#7fd6ff;display:block;margin-bottom:5px}
.evm-slab strong{font-size:18px}
.evm-slab.hot{background:linear-gradient(120deg,#1e7bf0,#6b4fe9);border-color:transparent;box-shadow:0 20px 50px rgba(35,80,220,.4)}
.prog-rail{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:56px;position:relative}
.prog-rail:before{content:"";position:absolute;left:8%;right:8%;top:31px;height:2px;background:linear-gradient(90deg,#22c9f4,#3159e6,#7c4be9);opacity:.5}
.prog-step{text-align:center;padding:0 18px;position:relative}
.prog-dot{width:62px;height:62px;margin:0 auto 18px;border-radius:20px;display:grid;place-items:center;font-weight:850;font-size:13px;color:white;background:linear-gradient(135deg,#1e7bf0,#6b4fe9);box-shadow:0 14px 34px rgba(30,90,230,.35);position:relative;z-index:2}
.prog-step h4{margin:0 0 8px;font-size:19px;letter-spacing:-.02em}
.prog-step p{margin:0;font-size:13px;color:var(--muted);line-height:1.6}
.bc-dark .prog-step p{color:#a9bbe4}

/* ---------- 06 · fixed vs assembled machine ---------- */
.machine-compare{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:52px}
.machine-panel{border-radius:26px;padding:38px;min-height:420px;display:flex;flex-direction:column}
.machine-panel.old{border:1px solid var(--line);background:#f7f9ff}
.machine-panel.new{background:linear-gradient(150deg,#07194a,#1c50c0);color:white;box-shadow:0 30px 70px rgba(14,55,160,.35)}
.machine-panel h3{font-size:22px;margin:0 0 4px;letter-spacing:-.02em}
.machine-panel .sub{font-size:12px;font-weight:800;letter-spacing:.12em;margin-bottom:26px}
.machine-panel.old .sub{color:#8a97b4}
.machine-panel.new .sub{color:#7fd6ff}
.spec-list{display:grid;gap:9px}
.spec-list span{border-radius:12px;padding:12px 16px;font-size:13.5px;font-weight:700;background:white;border:1px solid var(--line);color:#3d4d76}
.machine-panel.new .spec-list span{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:#dce7ff}
.machine-verdict{margin-top:auto;padding-top:22px;font-size:14px;line-height:1.6}
.machine-panel.old .machine-verdict{color:#7a88a8}
.machine-panel.new .machine-verdict{color:#bcd2ff;font-weight:650}
.assemble-arrow{text-align:center;margin:14px 0 6px;font-size:20px;color:#7fd6ff}

/* ---------- 07 · unified 128 GB domain ---------- */
.domain-visual{border-radius:30px;padding:52px 40px;background:
 radial-gradient(circle at 20% 15%,rgba(43,201,241,.16),transparent 40%),
 radial-gradient(circle at 85% 85%,rgba(124,75,233,.2),transparent 45%),
 #050f30;border:1px solid rgba(255,255,255,.1);text-align:center;color:white}
.domain-cap{font-size:clamp(46px,5vw,72px);font-weight:850;letter-spacing:-.04em;background:linear-gradient(90deg,#2bc9f1,#7c8cf5,#a56af0);-webkit-background-clip:text;background-clip:text;color:transparent}
.domain-cap-label{font-size:12px;letter-spacing:.22em;font-weight:850;color:#7a90c8;margin-top:4px}
.domain-split{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:40px}
.domain-split div{border-radius:16px;padding:20px 14px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05)}
.domain-split strong{display:block;font-size:15px;margin-bottom:5px}
.domain-split span{font-size:11px;color:#95a8d6;letter-spacing:.06em}
.domain-gov{margin:34px auto 0;display:inline-block;border-radius:999px;padding:11px 26px;font-size:12px;font-weight:850;letter-spacing:.16em;background:linear-gradient(90deg,#1e7bf0,#7c4be9)}
.domain-note{font-size:12.5px;color:#7a88a8;margin-top:26px;max-width:560px}

/* ---------- 08 · HERT ---------- */
.hert-card{border-radius:26px;border:1px solid var(--line);background:white;padding:44px;box-shadow:var(--shadow)}
.hert-card .letter-row{display:flex;gap:10px;margin-bottom:24px}
.hert-card .letter-row b{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;font-size:23px;color:white;background:linear-gradient(135deg,#1e7bf0,#6b4fe9)}
.hert-list{display:grid;gap:0;margin-top:10px}
.hert-list span{padding:13px 2px;border-bottom:1px solid #edf1f9;font-size:14.5px;font-weight:650;color:#33436e;display:flex;align-items:center;gap:12px}
.hert-list span:before{content:"";width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,#22c9f4,#7c4be9);flex:none}

/* ---------- 09 · vertical integration ---------- */
.vert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:54px}
.vert-col{border-radius:24px;border:1px solid rgba(255,255,255,.13);background:rgba(255,255,255,.04);padding:34px 30px}
.vert-col .tiny-label{color:#7fd6ff}
.vert-col h3{font-size:25px;margin:10px 0 20px;letter-spacing:-.02em}
.vert-col ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.vert-col li{font-size:14px;color:#c4d3f2;padding:9px 0;border-bottom:1px solid rgba(255,255,255,.07)}
.vert-base{margin-top:20px;border-radius:18px;padding:20px;text-align:center;font-weight:850;letter-spacing:.14em;font-size:13px;background:linear-gradient(90deg,#1e7bf0,#7c4be9);box-shadow:0 18px 45px rgba(50,80,230,.4)}
.vert-base small{display:block;font-weight:700;letter-spacing:.04em;font-size:11px;color:rgba(255,255,255,.75);margin-top:5px}

/* ---------- 10 · middleware ---------- */
.mw-stack{display:grid;gap:10px;max-width:560px;margin:52px auto 0}
.mw-tier{border-radius:16px;padding:17px 26px;text-align:center;font-weight:800;font-size:15px;border:1px solid var(--line);background:white;color:#24356b}
.mw-tier.core{background:linear-gradient(120deg,#0d2a6e,#3f43c9);color:white;border-color:transparent;padding:26px;box-shadow:0 24px 55px rgba(25,50,170,.3)}
.mw-tier.core strong{display:block;font-size:18px;margin-bottom:14px}
.mw-caps{display:flex;flex-wrap:wrap;gap:7px;justify-content:center}
.mw-caps span{border-radius:999px;padding:6px 12px;font-size:11px;font-weight:750;background:rgba(255,255,255,.12);color:#cfe0ff}
.mw-down{text-align:center;color:#93a4cc;font-size:18px;margin:2px 0}

/* ---------- 11 · cloud absorbed ---------- */
.absorb-ring{position:relative;min-height:480px;display:grid;place-items:center}
.absorb-ring:before{content:"";position:absolute;width:430px;height:430px;border-radius:50%;border:1px solid rgba(110,203,255,.28);box-shadow:0 0 0 65px rgba(64,128,244,.06),0 0 0 130px rgba(64,128,244,.04)}
.absorb-core{width:140px;height:140px;border-radius:38px;background:white;display:grid;place-items:center;box-shadow:0 25px 70px rgba(0,0,0,.4);z-index:2}
.absorb-core img{width:82px}
.absorb-sat{position:absolute;border-radius:14px;padding:11px 16px;font-size:11.5px;font-weight:800;letter-spacing:.06em;background:rgba(10,30,82,.85);border:1px solid rgba(255,255,255,.22);color:#d7e4ff}
.absorb-sat.cloud{background:linear-gradient(120deg,#14a8f4,#3d5ae8);border-color:transparent;box-shadow:0 16px 40px rgba(30,110,240,.45)}
.as1{left:50%;top:2%;transform:translateX(-50%)}.as2{right:8%;top:19%}.as3{right:2%;top:52%}.as4{right:16%;bottom:12%}
.as5{left:50%;bottom:1%;transform:translateX(-50%)}.as6{left:14%;bottom:14%}.as7{left:1%;top:50%}.as8{left:9%;top:18%}

/* ---------- 12 · Ambient OS interface ---------- */
.os-journey{display:grid;grid-template-columns:repeat(5,auto);gap:12px;align-items:center;justify-content:start;margin:44px 0 12px;flex-wrap:wrap}
.os-journey span{border-radius:999px;padding:11px 20px;font-weight:800;font-size:13.5px;background:#eef3ff;color:#2c50b9}
.os-journey b{color:#a9b7d6;font-weight:400}
.os-hidden{margin-top:34px;border-radius:22px;border:1px dashed #c3d0ea;background:#f8faff;padding:28px 32px}
.os-hidden h4{margin:0 0 14px;font-size:12px;font-weight:850;letter-spacing:.16em;color:#7a88a8}
.os-hidden div{display:flex;flex-wrap:wrap;gap:8px}
.os-hidden span{border-radius:10px;padding:8px 13px;font-size:12px;font-weight:700;background:white;border:1px solid var(--line);color:#54658e}

/* ---------- 13 · computer classes ---------- */
.class-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:50px}
.class-card{border-radius:20px;border:1px solid var(--line);background:white;padding:26px;min-height:150px;transition:.2s}
.class-card:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(15,44,101,.1)}
.class-card .glyph{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;color:white;font-size:18px;background:linear-gradient(135deg,#1ac8f2,#4657e7);margin-bottom:16px}
.class-card h4{margin:0 0 6px;font-size:18px}
.class-card p{margin:0;font-size:13px;color:var(--muted);line-height:1.55}

/* ---------- 14 · software → silicon ---------- */
.method-compare{display:grid;grid-template-columns:1fr 1.2fr;gap:22px;margin-top:54px;align-items:stretch}
.method-panel{border-radius:24px;padding:36px}
.method-panel.trad{border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.03)}
.method-panel.amb{background:linear-gradient(150deg,#0b2564,#3a3fbc);box-shadow:0 30px 70px rgba(20,40,160,.45)}
.method-panel h3{margin:0 0 22px;font-size:20px}
.method-flow{display:grid;gap:8px}
.method-flow span{border-radius:12px;padding:12px 18px;font-size:13.5px;font-weight:750;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.13);color:#d5e2ff}
.method-flow i{text-align:center;font-style:normal;color:#7f95cf;font-size:15px}
.method-panel.amb .method-flow span{background:rgba(255,255,255,.12)}
.method-flow .final{background:linear-gradient(90deg,#22c9f4,#7c4be9);border-color:transparent;color:white;font-weight:850;letter-spacing:.08em;text-align:center}

/* ---------- 15 · silicon convergence ---------- */
.chip-visual{border-radius:28px;background:
 radial-gradient(circle at 30% 20%,rgba(43,201,241,.13),transparent 45%),
 #04081c;border:1px solid rgba(255,255,255,.1);padding:46px;color:white}
.chip-die{max-width:560px;margin:auto;border-radius:22px;border:1px solid rgba(255,255,255,.25);background:linear-gradient(145deg,#0a122e,#111a3f);padding:34px;box-shadow:0 40px 90px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.12)}
.chip-die .chip-brand{display:flex;align-items:center;gap:13px;justify-content:center;margin-bottom:26px}
.chip-die .chip-brand img{width:44px}
.chip-die .chip-brand strong{font-size:19px;letter-spacing:.24em;font-weight:800}
.chip-blocks{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.chip-blocks span{border:1px solid rgba(255,255,255,.18);border-radius:10px;padding:11px 13px;font-size:11.5px;font-weight:750;letter-spacing:.05em;color:#c8d7fa;background:rgba(255,255,255,.04);text-align:center}
.chip-rail{margin-top:8px;border-radius:10px;padding:11px;text-align:center;font-size:11px;font-weight:850;letter-spacing:.18em;background:linear-gradient(90deg,rgba(34,201,244,.25),rgba(124,75,233,.25));border:1px solid rgba(126,150,255,.35);color:#e6eeff}
.chip-above{margin-top:26px;text-align:center;font-size:13px;color:#8fa3d4;line-height:2}
.chip-above b{color:#e2ebff;font-weight:750}

/* ---------- 16 · vision / final ---------- */
.vision-list{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:40px 0}
.vision-list span{border-radius:999px;border:1px solid rgba(255,255,255,.22);padding:11px 22px;font-size:13.5px;font-weight:750;color:#d5e2ff}
.vision-tag{text-align:center;font-size:15px;letter-spacing:.06em;color:#8fa3d4;font-weight:750}
.bc-final{position:relative;text-align:center;padding:170px 0 150px;overflow:hidden;background:
 radial-gradient(circle at 50% 120%,rgba(60,90,235,.35),transparent 55%),
 radial-gradient(circle at 85% 15%,rgba(37,201,241,.12),transparent 30%),
 #030b24;color:white}
.bc-final img{width:88px;margin:0 auto 30px;display:block}
.bc-final h2{font-size:clamp(46px,6vw,86px);letter-spacing:-.045em;line-height:1.02;margin:0}
.bc-final .thesis{margin-top:26px;font-size:clamp(20px,2.4vw,30px);font-weight:750;background:linear-gradient(90deg,#2bc9f1,#8a5cf0);-webkit-background-clip:text;background-clip:text;color:transparent}
.bc-final .where{margin:56px auto 0;max-width:640px;color:#8fa3d4;font-size:16px;line-height:1.8}
.bc-final .where b{color:#e2ebff}
.bc-final .bc-hero-actions{margin-top:48px}

/* ---------- responsive ---------- */
@media(max-width:1000px){
  .bc-grid2{grid-template-columns:1fr;gap:44px}
  .era-track{grid-template-columns:1fr}
  .era-arrow{transform:rotate(90deg);padding:10px 0}
  .mscan-row{grid-template-columns:repeat(2,1fr)}
  .mscan-flip,.era-claim,.machine-compare,.method-compare{grid-template-columns:1fr}
  .vert-grid,.class-grid{grid-template-columns:1fr 1fr}
  .prog-rail{grid-template-columns:1fr 1fr;gap:34px}
  .prog-rail:before{display:none}
}
@media(max-width:640px){
  .bc-section{padding:80px 0}
  .mscan-row,.vert-grid,.class-grid,.domain-split,.res-branch{grid-template-columns:1fr}
  .frag-visual{min-height:520px}
  .absorb-ring:before{width:300px;height:300px}
  .prog-rail{grid-template-columns:1fr}
}