/* ============================================================
   ORANO · Landing layout & sections
   Mobile-first; desktop expands. Hero → Story → Features →
   Showcase → Final CTA. Calm motion only.
   ============================================================ */

body {
  background: var(--bg);
}

.fx-grain, .fx-particles, .fx-texture {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1;
}
.fx-grain {
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.fx-particles { z-index: 0; }
.fx-particles canvas { width: 100%; height: 100%; }

/* faint cosmic backdrop — screen-blended so only the bright swirl reads,
   pure blacks in the source image stay invisible against --bg */
.fx-texture {
  z-index: -1;
  background-image: url("assets/bg-texture.png");
  background-size: cover;
  background-position: center 35%;
  background-repeat: no-repeat;
  opacity: 0.10;
  mix-blend-mode: screen;
}
@media (max-width: 720px) {
  .fx-texture { opacity: 0.06; }
}

/* content sits above fx */
.site { position: relative; z-index: 2; }

/* ── Nav (minimal, hairline) ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s-2);
  padding: 18px var(--gutter);
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--d) var(--ease), background var(--d) var(--ease);
}
.nav.scrolled { border-bottom-color: var(--border); background: rgba(0,0,0,0.85); }
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 600; letter-spacing: var(--ls-tight); font-size: 17px;
  flex-shrink: 1; min-width: 0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.nav-brand .logo { width: 28px; height: 28px; flex-shrink: 0; }
.nav-brand .wordmark { height: 16px; width: auto; display: block; }
.nav-links { display: none; gap: 28px; }
.nav-links a { font-size: 13px; color: var(--text-2); transition: color var(--d-fast); }
.nav-links a:hover { color: var(--text); }
.nav-cta { display: flex; gap: 8px; align-items: center; flex-shrink: 0; }
.nav-cta .btn { height: 40px; padding: 0 18px; font-size: 13px; }
@media (min-width: 860px) { .nav-links { display: flex; } }

/* Defensive tightening so the CTA can never crowd the edge on small phones */
@media (max-width: 380px) {
  .nav { padding: 14px 16px; }
  .nav-brand { font-size: 15px; gap: 8px; }
  .nav-brand .logo { width: 24px; height: 24px; }
  .nav-brand .wordmark { height: 14px; }
  .nav-cta .btn { height: 36px; padding: 0 14px; font-size: 12.5px; }
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px var(--gutter) 80px;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  top: 40%; left: 50%;
  transform: translate(-50%, -50%);
  width: min(900px, 120vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(216,222,232,0.08), transparent 60%);
  z-index: 0;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--maxw);
  display: grid;
  gap: var(--s-5);
  grid-template-columns: 1fr;
  align-items: center;
}
@media (min-width: 980px) {
  .hero-inner { grid-template-columns: 1fr auto 1fr; gap: var(--s-4); }
}

/* phone columns (desktop). Fixed width so the device doesn't collapse. */
.hero-phone { display: none; width: 290px; }
.hero-phone.left  { justify-self: end; }
.hero-phone.right { justify-self: start; }
@media (min-width: 980px) {
  .hero-phone { display: block; }
  .hero-phone .device { max-width: 290px; transform: scale(0.92); }
  .hero-phone.left  .device { transform: scale(0.92) translateY(24px) rotate(-2.5deg); }
  .hero-phone.right .device { transform: scale(0.92) translateY(-12px) rotate(2.5deg); }
}

/* center stack */
.hero-center {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s-3);
}
.hero-logo {
  width: clamp(72px, 12vw, 104px);
  height: clamp(72px, 12vw, 104px);
  margin-bottom: var(--s-1);
}
.hero-logo .logo { width: 100%; height: 100%; }
.hero-promise {
  font-size: clamp(34px, 7vw, 68px);
  font-weight: 600;
  letter-spacing: var(--ls-tight);
  line-height: 1.02;
  max-width: 12ch;
}
.hero-promise .em { color: var(--text); }
.hero-promise .dim { color: var(--text-3); }
.hero-sub {
  font-size: clamp(15px, 1.6vw, 19px);
  color: var(--text-2);
  max-width: 34ch;
  line-height: 1.45;
  font-weight: 400;
}
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: var(--s-1); }

/* mobile hero mockup (shown below the sub-copy, above the CTA, on small screens) */
.hero-mobile-phone { display: block; margin: var(--s-4) auto 0; }
.hero-mobile-phone img { display: block; width: 100%; max-width: 300px; height: auto; margin: 0 auto; }
@media (min-width: 980px) { .hero-mobile-phone { display: none; } }

/* ── Mobile hero: fills the screen, CTA pinned to the bottom ──
   100svh (not auto) so the hero always spans a full viewport regardless
   of phone size/browser chrome; a flex "sticky footer" pushes the CTA to
   the bottom edge instead of leaving dead space above the next section.
   Degrades gracefully on short phones: if content needs more room than
   the screen gives, the hero just grows (min-height) and CTA follows
   normal flow instead of getting artificially pinned. */
@media (max-width: 720px) {
  .hero {
    min-height: 100svh;
    display: flex;
    flex-direction: column;
    /* top padding must clear the fixed nav (~65-70px tall) or the logo
       renders partially hidden behind it */
    padding: 84px var(--gutter) max(24px, env(safe-area-inset-bottom));
  }
  .hero-inner { flex: 1; display: flex; flex-direction: column; }
  .hero-glow { opacity: 0.55; width: min(560px, 150vw); }
  .hero-logo {
    width: 44px;
    height: 44px;
    margin-bottom: 0;
    opacity: 0.65;
  }
  .hero-center { flex: 1; justify-content: flex-start; gap: 14px; }
  .hero-promise {
    font-size: clamp(26px, 8vw, 34px);
    max-width: 11ch;
  }
  .hero-sub {
    font-size: 14px;
    max-width: none;
    white-space: nowrap;
  }
  .hero-ctas { width: 100%; margin-top: auto; padding-top: var(--s-3); }
  .hero-ctas .btn { flex: 1; height: 58px; font-size: 16px; }
  /* Scaled slightly past full-bleed (114vw, cropping a little off each
     side) to gain extra height beyond what 100vw alone allows — this
     eats further into the leftover vertical space that piles up as a
     gap before the CTA, pushing image and button closer together. */
  .hero-mobile-phone {
    width: 108vw;
    margin: 10px calc(50% - 54vw) 0;
    overflow: hidden;
  }
  .hero-mobile-phone img { max-width: 100%; }
}

/* scroll cue */
.scroll-cue {
  position: absolute;
  bottom: 28px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--text-3);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  z-index: 3;
  animation: cue-float 2.6s var(--ease) infinite;
}
.scroll-cue svg { width: 16px; height: 16px; }
@keyframes cue-float { 0%,100% { transform: translate(-50%, 0); opacity: 0.5; } 50% { transform: translate(-50%, 6px); opacity: 1; } }
@media (max-width: 979px) { .scroll-cue { display: none; } }

/* ── Section shell ── */
.section {
  position: relative;
  padding: clamp(72px, 12vh, 140px) var(--gutter);
}
.section-inner { max-width: var(--maxw); margin: 0 auto; }
.section-head { margin-bottom: var(--s-5); }
.section-head.center { text-align: center; }
.section-head .kicker { margin-bottom: 14px; }
.section-head .lead { max-width: 52ch; margin-top: 14px; }
.section-head.center .lead { margin-left: auto; margin-right: auto; }

/* ── Scroll Story (pinned storytelling) ── */
.story { position: relative; }
.story-rail {
  position: absolute;
  left: var(--gutter);
  /* start below the section head so the rail doesn't slice through the headline */
  top: 200px;
  bottom: 100px;
  width: 1px;
  background: var(--border);
  z-index: 0;              /* rail sits BEHIND content */
}
.story-rail .fill {
  position: absolute; top: 0; left: 0; width: 100%;
  background: var(--platinum);
  height: 0;
  transition: height 0.1s linear;
}
.story-stages {
  position: relative;
  z-index: 2;              /* content above the rail */
  display: flex;
  flex-direction: column;
  /* Softer gap between stages so transitions feel cinematic, not jumpy */
  gap: clamp(80px, 20vh, 200px);
  padding-top: clamp(40px, 8vh, 80px);
  padding-bottom: clamp(40px, 8vh, 80px);
}
.stage {
  position: relative;
  min-height: 70vh;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-5);
  align-items: center;
  /* subtle radial glow behind each stage for depth */
  background: radial-gradient(ellipse 60% 50% at 50% 50%, rgba(216,222,232,0.04), transparent 70%);
}
.stage > * { position: relative; z-index: 1; }
.stage-text { max-width: 30ch; }
/* large headlines get a faint glow so they feel dimensional, not flat */
.stage-text h3 {
  text-shadow: 0 0 40px rgba(255,255,255,0.06);
}
.stage-text .step-num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-3);
  margin-bottom: 16px;
}
/* Step number overlaid on the top-left of each phone — sits on the device,
   doesn't push the phone down or offset it. Center-aligned visually because
   it sits inside the device frame's bounding box. */
.stage-phone { position: relative; }
.step-num-mobile {
  position: absolute;
  top: -16px;
  left: 16px;
  z-index: 4;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--text-2);
  opacity: 0;
  transition: opacity var(--d) var(--ease);
}
@media (max-width: 720px) {
  .step-num-mobile {
    opacity: 1;
    font-size: 11px;
    top: -20px;
    left: 22px;
    color: var(--text-2);
    /* subtle backdrop so it reads against any phone screen content */
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    padding: 4px 8px;
    border-radius: 6px;
    border: 1px solid rgba(255,255,255,0.06);
  }
}
/* On desktop, the .step-num-mobile is redundant with the one in .stage-text, so hide */
@media (min-width: 980px) {
  .step-num-mobile { display: none; }
}
.stage-text h3 {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 600;
  letter-spacing: var(--ls-tight);
  line-height: 1.08;
  margin-bottom: 16px;
}
.stage-text p {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.5;
}
.stage-text .stage-socials {
  margin-top: 24px;
  max-width: 360px;
}
.stage-text .stage-socials img {
  width: 100%;
  height: auto;
  display: block;
  opacity: 0.85;
}
.stage-phone { display: flex; justify-content: center; }
.stage-phone .device { max-width: 270px; }

/* one-line caption under each phone — mobile only. The full h3/p pair
   in .stage-text is hidden on mobile, so this is the only description
   a mobile visitor gets for what each screen is showing. */
.stage-caption-mobile { display: none; }
@media (max-width: 720px) {
  .stage-caption-mobile {
    display: block;
    position: relative;
    z-index: 2;
    text-align: center;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: var(--ls-tight);
    color: var(--text);
    max-width: 26ch;
    margin: 16px auto 0;
    padding: 2px 12px;
    /* opaque, same as page bg — masks the story-rail line passing behind it
       (the rail shows through the gaps around glyphs otherwise) */
    background: var(--bg);
  }
}

/* desktop: alternate sides + sticky phone behavior */
@media (min-width: 980px) {
  .stage { grid-template-columns: 1fr 1fr; gap: var(--s-6); }
  .stage:nth-child(even) .stage-text { order: 2; }
  .stage:nth-child(even) .stage-phone { order: 1; }
  .stage-text { justify-self: center; }
}

/* stage connector dot on rail */
.stage::before {
  content: "";
  position: absolute;
  left: calc(var(--gutter) * -1 + 30px);
  left: 0;
  top: 50%;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--border);
  transform: translate(-50%, -50%);
  transition: background var(--d), box-shadow var(--d);
}
.story-rail {
  /* Centered on ALL viewports so the line stays in the middle of the section */
  left: 50%;
  transform: translateX(-50%);
  /* start below the section head so the rail doesn't slice through the headline */
  top: 200px;
  bottom: 100px;
}
@media (min-width: 980px) {
  .stage::before { display: none; }
  /* same centered position on desktop, slightly more clearance for the larger section head */
  .story-rail { top: 260px; bottom: 100px; }
}

/* ── Features (side-by-side visual blocks) ── */
.features-grid {
  display: grid;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  overflow: hidden;
  grid-template-columns: 1fr;
}
.feature {
  background: var(--bg);
  padding: clamp(32px, 5vw, 56px);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  min-height: clamp(280px, 40vh, 380px);
}
.feature .f-icon {
  width: 40px; height: 40px;
  color: var(--platinum);
  margin-bottom: 4px;
}
.feature .f-icon svg { width: 100%; height: 100%; }
.feature h3 {
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 600;
  letter-spacing: var(--ls-tight);
}
.feature p { font-size: 14px; color: var(--text-2); line-height: 1.5; max-width: 34ch; }
.feature .f-visual { margin-top: auto; }
@media (min-width: 720px) { .features-grid { grid-template-columns: 1fr 1fr; } }

/* feature mini-visuals (monochrome, abstract) */
.fv-sources { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.fv-sources .glyph-pill {
  width: 48px; height: 48px;
  border: 1px solid var(--border);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-2);
  transition: border-color var(--d), color var(--d);
}
.fv-sources .glyph-pill:hover { border-color: var(--text-3); color: var(--text); }
.fv-sources .glyph-pill svg { width: 22px; height: 22px; }

.fv-bars { display: flex; align-items: flex-end; gap: 6px; height: 70px; }
.fv-bars span {
  flex: 1; border-radius: 3px;
  background: var(--text-4);
  animation: fv-bar 3s var(--ease) infinite;
}
.fv-bars span:nth-child(1){ height: 40%; animation-delay: 0s; }
.fv-bars span:nth-child(2){ height: 75%; animation-delay: .2s; }
.fv-bars span:nth-child(3){ height: 55%; animation-delay: .4s; }
.fv-bars span:nth-child(4){ height: 90%; animation-delay: .6s; background: var(--text-2); }
.fv-bars span:nth-child(5){ height: 30%; animation-delay: .8s; }
.fv-bars span:nth-child(6){ height: 65%; animation-delay: 1s; }
@keyframes fv-bar { 0%,100% { transform: scaleY(1); opacity: 0.6; } 50% { transform: scaleY(0.7); opacity: 1; } }

.fv-steps { display: flex; flex-direction: column; gap: 8px; }
.fv-steps .step {
  display: flex; align-items: center; gap: 10px;
  font-size: 12px; color: var(--text-2);
}
.fv-steps .step .chk {
  width: 16px; height: 16px; border-radius: 5px;
  border: 1px solid var(--text-3); flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.fv-steps .step.on .chk { background: var(--platinum); border-color: var(--platinum); }
.fv-steps .step.on .chk svg { width: 10px; height: 10px; color: var(--bg); }
.fv-steps .step .chk svg { display: none; }
.fv-steps .step.on .chk svg { display: block; }

/* ── Real social-icons image visual ── */
.fv-socials { margin-top: auto; }
.fv-socials .social-row {
  display: flex;
  gap: 14px;
  margin-bottom: 16px;
}
.fv-socials .social-pill {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--text-2);
  transition: border-color var(--d), color var(--d);
}
.fv-socials .social-pill:hover { border-color: var(--text-3); color: var(--text); }
.fv-socials .social-pill svg { width: 22px; height: 22px; }
.fv-socials img {
  width: 100%;
  max-width: 320px;
  height: auto;
  display: block;
  opacity: 0.85;
  filter: brightness(1.1);
}

/* ── Connect your agent — compact 2-column grid of supported agents ── */
.fv-agents { margin-top: auto; display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.fv-agents .agent-item {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 12px;
  color: var(--text-2);
  background: rgba(255,255,255,0.015);
  min-width: 0;
}
.fv-agents .agent-item:last-child:nth-child(odd) { grid-column: 1 / -1; }
.fv-agents .agent-code {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 30px; height: 22px; padding: 0 6px;
  border-radius: 6px;
  background: rgba(216,222,232,0.10);
  border: 1px solid rgba(216,222,232,0.18);
  color: var(--platinum);
  font-family: var(--mono);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}
.fv-agents .agent-code svg { width: 13px; height: 13px; }
.fv-agents .agent-name {
  font-size: 12px; color: var(--text); font-weight: 500; letter-spacing: -0.01em;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0;
}

/* ── Screen showcase ── */
.showcase-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  justify-items: center;
  align-items: end;
}
.showcase-item {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}
.showcase-item .device { max-width: 200px; }
.showcase-item .label {
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
@media (max-width: 720px) {
  /* Features stay 2-col, compact on mobile */
  .features-grid { grid-template-columns: 1fr 1fr; gap: 1px; }
  .feature { padding: 22px 18px; min-height: 180px; gap: 12px; }
  .feature .f-icon { width: 28px; height: 28px; margin-bottom: 0; }
  .feature .f-icon svg { width: 28px; height: 28px; }
  .feature h3 { font-size: 14px; letter-spacing: -0.02em; line-height: 1.2; }
  .feature p { font-size: 11.5px; line-height: 1.4; max-width: none; }
  /* Show ALL feature visuals on mobile (steps checklist, bars, agent row) */
  .feature .f-visual {
    display: block;
    margin-top: 4px;
    opacity: 0.85;
  }
  .fv-bars { height: 40px; gap: 4px; }
  .fv-socials img { max-width: 100%; opacity: 0.7; }
  /* Aggressive mobile sizing for step text so they FIT */
  .fv-steps .step { font-size: 10px; gap: 8px; }
  .fv-steps .step .chk { width: 14px; height: 14px; }
  .fv-steps .step .chk svg { width: 9px; height: 9px; }
  /* Agent grid compact */
  .fv-agents { gap: 5px; }
  .fv-agents .agent-item { padding: 6px 8px; gap: 6px; }
  .fv-agents .agent-code { min-width: 24px; height: 19px; font-size: 8.5px; }
  .fv-agents .agent-name { font-size: 10.5px; }

  /* Showcase repeats screens already shown in the story above — redundant
     scroll length on mobile, so it's cut entirely rather than shrunk. */
  #showcase { display: none; }

  /* ── Mobile story: keep only the section header + phones ── */
  .story-stages { gap: 92px; padding-top: 24px; padding-bottom: 24px; }
  .stage { min-height: auto; padding: 8px 0; background: none; }
  .stage-text { display: none; }
  /* .stage-phone is display:flex (row) so it can center the device on
     desktop; on mobile it also holds .stage-caption-mobile as a second
     child, which must stack BELOW the phone, not beside it. */
  .stage-phone {
    justify-self: center;
    flex-direction: column;
    align-items: center;
  }
  /* Fixed vw-based width (not a percentage of the flex/grid container) so
     stages whose screen contains a nested grid (the in-phone .tabbar) can't
     shrink the device frame via intrinsic sizing — every phone in the
     "How it works" story is the same width regardless of its content.
     Sized down further per feedback — these don't need to be as large as
     the hero phone. */
  .stage-phone .device { width: min(230px, 66vw); max-width: none; flex: none; }
  /* "How it works" header stays, centered */
  .story .section-head { margin-bottom: 36px; }
  .story .section-head .h-sec { font-size: 26px; }
  .story .section-head .lead { font-size: 14px; max-width: 36ch; margin: 10px auto 0; }
}

/* ── Final CTA ── */
.cta {
  text-align: center;
  padding: clamp(100px, 18vh, 200px) var(--gutter);
  position: relative;
}
.cta .hero-glow { opacity: 0.7; }
.cta-inner { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: center; gap: var(--s-3); }
.cta h2 {
  font-size: clamp(32px, 6vw, 60px);
  font-weight: 600;
  letter-spacing: var(--ls-tight);
  line-height: 1.05;
  max-width: 14ch;
}
.cta .sub { font-size: 15px; color: var(--text-2); max-width: 40ch; }
.cta .btn { margin-top: var(--s-2); }
.cta .cta-discord { margin-top: var(--s-3); }

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: var(--s-6) var(--gutter) var(--s-4);
}
.footer-inner { max-width: var(--maxw); margin: 0 auto; }
.footer-top {
  display: flex; flex-direction: column; align-items: center;
  gap: var(--s-2);
  text-align: center;
  padding-bottom: var(--s-5);
}
.footer-brand { display: flex; align-items: center; gap: 10px; font-size: 15px; font-weight: 600; }
.footer-brand .logo { width: 20px; height: 20px; }
.footer-brand .wordmark { height: 14px; width: auto; display: block; }
.footer-tag {
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 500;
  letter-spacing: var(--ls-tight);
  color: var(--text-2);
}
.footer-bottom {
  display: flex; flex-wrap: wrap; gap: var(--s-3);
  align-items: center; justify-content: space-between;
  padding-top: var(--s-3);
  border-top: 1px solid var(--border-soft);
}
.footer-links { font-size: 12px; color: var(--text-3); display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a:hover { color: var(--text-2); }
.footer-copy { font-size: 12px; color: var(--text-3); }
@media (max-width: 640px) {
  .footer-bottom { flex-direction: column; align-items: center; gap: var(--s-2); text-align: center; }
}