/* ==========================================================================
   LKSCOIN 2.0 — Design system
   Brand blue #175DAB and Titillium Web inherited from the existing site.
   ========================================================================== */

/* Titillium Web is self-hosted, not loaded from Google Fonts: fetching it from
   Google discloses every visitor's IP address to a third party, which Italian
   and German supervisory practice treats as a transfer needing a legal basis.
   Only 400/600/700 exist as local files; 300 and 900 fall back to the nearest
   weight, which is what the browser does anyway. */
@font-face{font-family:'Titillium Web';font-style:normal;font-weight:400;font-display:swap;
  src:url('../fonts/TitilliumWeb-Regular.woff2') format('woff2'),
      url('../fonts/TitilliumWeb-Regular.woff') format('woff');}
@font-face{font-family:'Titillium Web';font-style:normal;font-weight:600;font-display:swap;
  src:url('../fonts/TitilliumWeb-SemiBold.woff2') format('woff2'),
      url('../fonts/TitilliumWeb-SemiBold.woff') format('woff');}
@font-face{font-family:'Titillium Web';font-style:normal;font-weight:700;font-display:swap;
  src:url('../fonts/TitilliumWeb-Bold.woff2') format('woff2'),
      url('../fonts/TitilliumWeb-Bold.woff') format('woff');}

:root{
  /* Brand */
  --lks-blue:        #175DAB;
  --lks-blue-dark:   #0E3F77;
  --lks-blue-deep:   #08284C;
  --lks-blue-light:  #2E86D6;
  --lks-cyan:        #12B5D8;
  --lks-cyan-soft:   #6FD8EC;

  /* Neutrals */
  --ink:             #0C1C2E;
  --ink-soft:        #33475B;
  --muted:           #61758C;
  --line:            #DDE6F0;
  --surface:         #F4F8FC;
  --surface-2:       #EAF2FA;
  --white:           #FFFFFF;

  /* Semantics */
  --ok:              #1E9E6A;
  --warn:            #C08A1E;

  --radius:          14px;
  --radius-sm:       9px;
  --shadow:          0 10px 34px rgba(8, 40, 76, .09);
  --shadow-lg:       0 24px 60px rgba(8, 40, 76, .16);
  --maxw:            1180px;
  --ease:            cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth;scroll-padding-top:102px}

body{
  margin:0;
  font-family:'Titillium Web',system-ui,-apple-system,Segoe UI,sans-serif;
  font-size:17px;
  line-height:1.68;
  color:var(--ink-soft);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4,h5{
  font-family:'Titillium Web',sans-serif;
  color:var(--ink);
  line-height:1.18;
  margin:0 0 .6em;
  font-weight:700;
  letter-spacing:-.015em;
}
h1{font-size:clamp(2.1rem,4.4vw,3.4rem);font-weight:700}
h2{font-size:clamp(1.65rem,2.8vw,2.35rem)}
h3{font-size:1.24rem}
h4{font-size:1.03rem;font-weight:600}
p{margin:0 0 1.05em}
a{color:var(--lks-blue);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--lks-cyan)}
strong{color:var(--ink);font-weight:600}
ul,ol{margin:0 0 1.15em;padding-left:1.2em}
li{margin-bottom:.42em}
code,kbd,pre{font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
hr{border:0;border-top:1px solid var(--line);margin:2.6rem 0}
img{max-width:100%;height:auto}

/* ---------- Layout ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.container-narrow{max-width:840px}
.section{padding:88px 0}
.section-sm{padding:60px 0}
.section-tint{background:var(--surface)}
.section-tint-2{background:var(--surface-2)}
.section-dark{background:linear-gradient(160deg,var(--lks-blue-deep) 0%,var(--lks-blue-dark) 55%,var(--lks-blue) 100%);color:#CFE2F5}
.section-dark h1,.section-dark h2,.section-dark h3,.section-dark h4{color:#fff}
.section-dark a{color:var(--lks-cyan-soft)}
.section-dark strong{color:#fff}

.grid{display:grid;gap:26px}
/* Without this a wide child (table, code block) stretches the track instead of
   scrolling inside it. The implicit minimum of a grid track is `auto`. */
.grid > *{min-width:0}
.g-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g-4{grid-template-columns:repeat(4,minmax(0,1fr))}
/* minmax(0,…) is not decoration. A grid track's implicit minimum is `auto`,
   which means a wide child — a code block, a table — pushes the track past
   the container instead of scrolling inside it. That is what caused the
   horizontal overflow on phones. */
.split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center}
.split > *{min-width:0}
.split-top{align-items:start}

.center{text-align:center}
.lead{font-size:1.16rem;line-height:1.62;color:var(--ink-soft)}
.section-dark .lead{color:#C3DAF1}
.muted{color:var(--muted);font-size:.95rem}
.mb-0{margin-bottom:0}
.mt-3{margin-top:2rem}

/* ---------- Eyebrow / section head ---------- */
.eyebrow{
  display:inline-block;font-size:.76rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--lks-blue);margin-bottom:14px;
}
.section-dark .eyebrow{color:var(--lks-cyan-soft)}
.section-head{max-width:760px;margin-bottom:52px}
.section-head.center{margin-left:auto;margin-right:auto}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:90px;gap:24px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:42px;height:42px;flex:0 0 42px}
.brand-logo{height:58px;width:auto;display:block}
.brand-logo-footer{height:66px;width:auto;display:block}
.brand-coin{width:46px;height:46px;flex:0 0 46px;display:block}
.brand-text{line-height:1.05}
.brand-name{display:block;font-weight:700;font-size:1.16rem;color:var(--lks-blue);letter-spacing:-.02em}
.brand-sub{display:block;font-size:.68rem;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);font-weight:600}

.nav-links{display:flex;align-items:center;gap:5px;list-style:none;margin:0;padding:0}
.nav-links a{
  display:block;padding:9px 13px;border-radius:8px;font-size:.94rem;font-weight:600;
  color:var(--ink-soft);transition:all .18s var(--ease);
}
.nav-links a:hover{background:var(--surface-2);color:var(--lks-blue)}
.nav-links a.active{color:var(--lks-blue);background:var(--surface-2)}

/* external explorer link, visually promoted */
.nav-links a.nav-explorer{
  display:inline-flex;align-items:center;gap:6px;margin-left:8px;
  background:var(--lks-blue);color:#fff;padding:9px 16px;border-radius:8px;
  box-shadow:0 4px 12px rgba(23,93,171,.24);
}
.nav-links a.nav-explorer:hover{background:var(--lks-blue-dark);color:#fff}
.nav-links a.nav-explorer svg{
  width:14px;height:14px;stroke:currentColor;fill:none;
  stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;
}

.nav-toggle{
  display:none;background:none;border:1px solid var(--line);border-radius:8px;
  padding:9px 11px;cursor:pointer;line-height:0;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--lks-blue);margin:4px 0;border-radius:2px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;justify-content:center;
  padding:13px 26px;border-radius:9px;font-weight:600;font-size:.97rem;
  border:1.5px solid transparent;cursor:pointer;transition:all .2s var(--ease);
  text-align:center;
}
.btn-primary{background:var(--lks-blue);color:#fff;box-shadow:0 6px 18px rgba(23,93,171,.26)}
.btn-primary:hover{background:var(--lks-blue-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(23,93,171,.32)}
.btn-outline{border-color:var(--lks-blue);color:var(--lks-blue);background:transparent}
.btn-outline:hover{background:var(--lks-blue);color:#fff}
.btn-ghost-light{border-color:rgba(255,255,255,.42);color:#fff}
.btn-ghost-light:hover{background:#fff;color:var(--lks-blue-dark);border-color:#fff}
.btn-light{background:#fff;color:var(--lks-blue-dark)}
.btn-light:hover{background:var(--surface-2);color:var(--lks-blue-dark);transform:translateY(-1px)}
.btn-sm{padding:9px 18px;font-size:.9rem}
.btn-row{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(140deg,#08284C 0%,#0E3F77 42%,#175DAB 78%,#1E7BC4 100%);
  padding:104px 0 128px;
}
.hero::after{
  content:'';position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(900px 480px at 82% 22%, rgba(18,181,216,.30), transparent 62%),
    radial-gradient(700px 420px at 10% 88%, rgba(46,134,214,.34), transparent 66%);
}

/* --- photographic hero -------------------------------------------------
   The photo is a real <img class="hero-bg">, not a background-image: if it
   ever fails to load you see it immediately instead of silently getting a
   flat blue band. ::after carries the blue wash that keeps white text
   readable — strong on the left where the copy sits, light on the right
   so the photograph is actually visible.                                  */
.hero-bg{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;object-position:center;
  z-index:0;pointer-events:none;user-select:none;
}
.hero-photo::after{
  background:
    linear-gradient(100deg,
      rgba(5,26,50,.88) 0%,
      rgba(8,40,76,.74) 30%,
      rgba(14,63,119,.46) 60%,
      rgba(23,93,171,.22) 100%),
    linear-gradient(to bottom, rgba(5,26,50,.30), rgba(5,26,50,0) 38%),
    radial-gradient(760px 430px at 86% 18%, rgba(18,181,216,.20), transparent 66%);
}
.hero-photo .hero-mesh{opacity:.12;z-index:1}
.hero-mesh{
  position:absolute;inset:0;opacity:.30;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.13) 1px, transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 78% 68% at 62% 42%, #000 15%, transparent 74%);
  -webkit-mask-image:radial-gradient(ellipse 78% 68% at 62% 42%, #000 15%, transparent 74%);
}
.hero .container{position:relative;z-index:2}
.hero h1{color:#fff;max-width:15ch}
.hero h1 .thin{font-weight:300;color:#BEDCF5;display:block}
.hero-lead{font-size:1.22rem;line-height:1.6;color:#CFE4F7;max-width:56ch;margin-bottom:2rem}
.hero-sub{padding:76px 0 72px}
.hero-sub h1{max-width:22ch}

.hero-badge{
  display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:100px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);
  font-size:.82rem;font-weight:600;color:#DDEEFB;margin-bottom:22px;letter-spacing:.01em;
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:#4EE39B;box-shadow:0 0 0 4px rgba(78,227,155,.22)}

/* Inline elements the base stylesheet paints dark. Without these they inherit
   near-black on top of a dark blue panel and become unreadable. */
.hero strong,.cta-band strong,.section-dark h5,.hero h5,.cta-band h5{color:#fff}
.hero code,.cta-band code{color:#DDEEFB}
.hero a:not(.btn),.cta-band a:not(.btn){color:var(--lks-cyan-soft)}
.hero a:not(.btn):hover,.cta-band a:not(.btn):hover{color:#fff}
.section-dark .callout-quote{color:#fff}

/* wave divider */
.wave{display:block;width:100%;height:auto;margin-bottom:-1px}
.wave-top{margin-top:-1px}

/* ---------- Cards ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;transition:all .22s var(--ease);height:100%;
}
.card:hover{border-color:#BBD3EA;box-shadow:var(--shadow);transform:translateY(-2px)}
.card h3{margin-bottom:.45em}
.card p:last-child{margin-bottom:0}
.card-flat:hover{transform:none;box-shadow:none;border-color:var(--line)}
.card-dark{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);padding:28px;height:100%;
}
.card-dark h3{color:#fff}
.card-dark p{color:#C3DAF1;margin-bottom:0}

.card-icon{
  width:46px;height:46px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--lks-blue) 0%,var(--lks-cyan) 100%);
  margin-bottom:18px;
}
.card-icon svg{width:23px;height:23px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.card-dark .card-icon{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.2)}

/* brand illustration icons (blue PNG artwork on light surfaces) */
.card-art{height:56px;width:auto;display:block;margin-bottom:20px}

.card-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:.94rem;margin-top:6px}

/* ---------- Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:var(--line);border-radius:var(--radius);overflow:hidden}
.stat{background:#fff;padding:28px 22px;text-align:center}
.stat-num{font-size:2rem;font-weight:700;color:var(--lks-blue);line-height:1.1;display:block;letter-spacing:-.02em}
.stat-label{font-size:.82rem;color:var(--muted);text-transform:uppercase;letter-spacing:.09em;font-weight:600;margin-top:6px;display:block}
.section-dark .stats{background:rgba(255,255,255,.15)}
.section-dark .stat{background:transparent}
.section-dark .stat-num{color:#fff}
.section-dark .stat-label{color:#A9C9E8}

/* ---------- Layer / stack diagram ---------- */
.layers{display:grid;gap:14px}
.layer{
  display:grid;grid-template-columns:74px 1fr auto;gap:20px;align-items:center;
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--lks-blue);
  border-radius:var(--radius-sm);padding:22px 24px;
}
.layer-tag{font-weight:700;color:var(--lks-blue);font-size:.9rem;letter-spacing:.04em}
.layer h4{margin-bottom:.25em}
.layer p{margin:0;font-size:.95rem}
.layer-l1{border-left-color:var(--lks-blue-deep)}
.layer-l2{border-left-color:var(--lks-blue)}
.layer-l3{border-left-color:var(--lks-cyan)}

/* ---------- Steps / flow ---------- */
.steps{counter-reset:step;display:grid;gap:20px}
.step{position:relative;padding-left:60px}
.step::before{
  counter-increment:step;content:counter(step);
  position:absolute;left:0;top:-2px;width:38px;height:38px;border-radius:50%;
  background:var(--lks-blue);color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:.98rem;
}
.step h4{margin-bottom:.25em}
.step p{margin:0;font-size:.96rem}
.section-dark .step::before{background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.3)}

/* ---------- Tables ---------- */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%;min-width:0;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table{width:100%;border-collapse:collapse;font-size:.95rem;min-width:560px}
th,td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--surface);font-weight:700;color:var(--ink);font-size:.83rem;text-transform:uppercase;letter-spacing:.07em}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:var(--surface)}

/* ---------- Code block ---------- */
.code{
  background:var(--lks-blue-deep);color:#CBE4F7;border-radius:var(--radius);
  padding:24px 26px;overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%;min-width:0;font-size:.87rem;line-height:1.72;
}
.code .c{color:#7FA6C9}
.code .k{color:#6FD8EC;font-weight:600}
.code .s{color:#A8E6B4}
.code pre{margin:0;white-space:pre}

.endpoint{
  display:flex;align-items:center;gap:14px;padding:14px 18px;border:1px solid var(--line);
  border-radius:var(--radius-sm);background:#fff;font-size:.93rem;margin-bottom:10px;flex-wrap:wrap;
}
.method{
  font-family:ui-monospace,monospace;font-weight:700;font-size:.76rem;letter-spacing:.06em;
  padding:4px 10px;border-radius:5px;background:var(--surface-2);color:var(--lks-blue);flex-shrink:0;
}
.method-post{background:#E4F1E9;color:#1E7A54}
.endpoint code{color:var(--ink);font-size:.9rem}
.endpoint .desc{color:var(--muted);font-size:.88rem;margin-left:auto}

/* ---------- Timeline / roadmap ---------- */
.timeline{position:relative;padding-left:38px}
.timeline::before{content:'';position:absolute;left:11px;top:8px;bottom:8px;width:2px;background:var(--line)}
.phase{position:relative;margin-bottom:38px}
.phase:last-child{margin-bottom:0}
.phase::before{
  content:'';position:absolute;left:-33px;top:7px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--lks-blue);
}
.phase-vision::before{border-color:var(--line)}
.phase-head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:8px}
.phase-head h3{margin:0}
.phase-when{font-size:.86rem;color:var(--muted);font-weight:600}

.pill{
  display:inline-block;padding:4px 12px;border-radius:100px;font-size:.73rem;font-weight:700;
  letter-spacing:.07em;text-transform:uppercase;
}
.pill-funded{background:#E4F1E9;color:#1E7A54}
.pill-vision{background:var(--surface-2);color:var(--muted)}
.pill-live{background:#E4F1E9;color:#1E7A54}
.pill-progress{background:#FDF2DC;color:#96690D}
.pill-planned{background:var(--surface-2);color:var(--muted)}

/* ---------- Callout ---------- */
.callout{
  border-left:4px solid var(--lks-cyan);background:var(--surface);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:22px 26px;margin:0 0 1.4em;
}
.callout p:last-child{margin-bottom:0}
.callout h4{margin-bottom:.4em}
.callout-quote{
  border-left:4px solid var(--lks-blue);font-size:1.2rem;line-height:1.55;color:var(--ink);
  font-weight:600;padding:20px 28px;background:transparent;
}
.section-dark .callout{background:rgba(255,255,255,.07);border-left-color:var(--lks-cyan-soft)}

/* ---------- Checklist ---------- */
.checklist{list-style:none;padding:0;margin:0}
.checklist li{position:relative;padding-left:30px;margin-bottom:.7em}
.checklist li::before{
  content:'';position:absolute;left:0;top:.5em;width:15px;height:9px;
  border-left:2.4px solid var(--lks-cyan);border-bottom:2.4px solid var(--lks-cyan);
  transform:rotate(-45deg);
}

/* ---------- Team ---------- */
.person{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.person-name{font-weight:700;color:var(--ink);font-size:1.03rem;margin-bottom:2px}
.person-role{font-size:.74rem;letter-spacing:.11em;text-transform:uppercase;color:var(--lks-blue);font-weight:700;margin-bottom:10px}
.person p{font-size:.9rem;margin:0;color:var(--muted);line-height:1.55}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(135deg,var(--lks-blue-dark) 0%,var(--lks-blue) 60%,#1E86CE 100%);
  color:#fff;padding:78px 0;position:relative;overflow:hidden;
}
.cta-band h2{color:#fff}
.cta-band p{color:#CFE4F7;font-size:1.1rem}
.cta-band .container{position:relative;z-index:2}
.cta-photo::after{
  content:'';position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    linear-gradient(100deg,
      rgba(8,40,76,.84) 0%,
      rgba(14,63,119,.70) 48%,
      rgba(23,93,171,.46) 100%),
    linear-gradient(to bottom, rgba(5,26,50,.26), rgba(5,26,50,.10));
}

/* ---------- Footer ---------- */
.site-footer{background:var(--lks-blue-deep);color:#96B6D4;padding:64px 0 30px;font-size:.93rem}
.site-footer h4{color:#fff;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:16px}
.site-footer a{color:#B8D3EC;display:block;padding:3px 0}
.site-footer a:hover{color:#fff}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:44px}
.footer-brand p{color:#7FA3C4;font-size:.92rem;max-width:36ch;margin-top:14px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding-top:22px;
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:.85rem;color:#7FA3C4;
}
.footer-note{max-width:78ch;font-size:.8rem;color:#6C90B2;line-height:1.6;margin-top:18px}

/* ---------- Unfilled legal placeholders --------------------------------
   Deliberately loud. Delete this rule once every [bracketed] field on
   legal.html has been completed and reviewed.                            */
[data-todo-legal]{
  background:#FFF4D6;
  box-shadow:inset 0 -2px 0 #E0BA33;
  border-radius:3px;
  padding:0 3px;
}

/* ---------- Legal / disclaimer ---------- */
.disclaimer{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 28px;font-size:.9rem;color:var(--muted);
}
.disclaimer strong{color:var(--ink-soft)}

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .g-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr;gap:36px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}

  .nav-toggle{display:block}
  .nav-links{
    position:absolute;top:90px;left:0;right:0;background:#fff;flex-direction:column;
    align-items:stretch;gap:0;padding:10px 16px 18px;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow);display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 10px;border-radius:8px}
  .nav-links a.nav-explorer{margin:8px 0 0;justify-content:center;padding:13px 16px}
  .brand-logo{height:46px}
  .nav{height:78px}
  .nav-links{top:78px}
}
@media (max-width:640px){
  body{font-size:16px}
  .container{padding:0 18px}
  .section{padding:62px 0}
  .section-sm{padding:44px 0}
  .section-head{margin-bottom:36px}
  .g-2,.g-3,.g-4{grid-template-columns:minmax(0,1fr)}
  .split{grid-template-columns:minmax(0,1fr);gap:32px}
  .hero{padding:74px 0 92px}
  .hero-sub{padding:58px 0 62px}
  .layer{grid-template-columns:1fr;gap:8px;padding:20px}
  .footer-grid{grid-template-columns:1fr}
  .btn{width:100%}
  .btn-row{flex-direction:column}

  /* Long status text in a fully rounded pill wraps into an ugly lozenge. */
  .hero-badge{border-radius:12px;padding:9px 14px;font-size:.78rem;line-height:1.4}

  .hero-lead{font-size:1.06rem}
  .lead{font-size:1.05rem}

  /* ASCII diagrams are up to 71 characters wide. They scroll inside .code —
     shrinking the type first means less scrolling, not none. */
  .code{padding:18px 16px;font-size:.72rem;line-height:1.6}
  .code pre{white-space:pre}

  /* Two stat columns still fit; the numbers do not at 2rem. */
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat{padding:20px 12px}
  .stat-num{font-size:1.6rem}
  .stat-label{font-size:.72rem;letter-spacing:.06em}

  /* Tables keep their 560px floor and scroll, but the wrapper must be allowed
     to be narrower than its content for that scroll to engage. */
  .table-wrap{min-width:0;max-width:100%}
  th,td{padding:12px 14px;font-size:.9rem}

  /* Endpoint rows: the description was pushed right by margin-left:auto and
     ended up alone on a line, far from the path it describes. */
  .endpoint{padding:12px 14px}
  .endpoint .desc{margin-left:0;flex-basis:100%}

  .steps{gap:16px}
  .step{padding-left:48px}
  .step::before{width:32px;height:32px;font-size:.9rem}

  .timeline{padding-left:28px}
  .timeline::before{left:7px}
  .phase::before{left:-25px;width:14px;height:14px}

  .card,.person{padding:22px}
  .callout{padding:18px 20px}
  .callout-quote{font-size:1.05rem;padding:16px 20px}
  .disclaimer{padding:20px 22px}

  /* Multi-column lists are unreadable at this width. */
  [style*="columns:2"]{columns:1 !important}

  .cta-band{padding:56px 0}
  .site-footer{padding:48px 0 26px}
}

/* Very narrow phones — 320-360px. */
@media (max-width:380px){
  .container{padding:0 14px}
  h1{font-size:1.85rem}
  .code{font-size:.66rem}
  .stats{grid-template-columns:1fr}
  .brand-logo{height:40px}
}