/* ============================================================
   MITCHELL LANGLEY, ml.css
   Self contained stylesheet for every page on the site: home,
   services (infrastructure + analytics + case studies merged),
   bio, contact and the client portal.

   Class names for the header and the hero are the ones site.js
   already looks for, so the intro video keeps working.
   ============================================================ */

:root {
  --ink:#101B24;
  --navy:#1D3F5C;
  --signal:#2D6E9E;
  --teal:#0E6E6B;
  --graphite:#626D7A;
  --vellum:#F1F4F7;
  --paper:#FFFFFF;
  --mist:#B7C7D6;
  --ok:#1E8449;
  --alert:#9C3B2E;

  --sheet-1:rgba(255,255,255,.74);
  --sheet-2:rgba(255,255,255,.90);
  --wash-1:rgba(29,63,92,.04);
  --wash-2:rgba(29,63,92,.06);
  --sheet-dark:rgba(255,255,255,.07);
  --sheet-dark-2:rgba(255,255,255,.11);

  --rule:rgba(29,63,92,.14);
  --rule-strong:rgba(29,63,92,.24);
  --rule-dark:rgba(255,255,255,.16);

  --ground:radial-gradient(70rem 40rem at 12% -8%, rgba(45,110,158,.16), transparent 60%),
           radial-gradient(56rem 36rem at 92% 6%, rgba(14,110,107,.10), transparent 62%),
           linear-gradient(180deg,#EDF1F5 0%,#F4F6F9 46%,#EFF2F5 100%);

  --font:'Inter','Inter var',-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif;

  --fs-display:3.815rem;
  --fs-h1:2.441rem;
  --fs-h2:1.953rem;
  --fs-h3:1.563rem;
  --fs-lead:1.25rem;
  --fs-body:1rem;
  --fs-caption:.8125rem;
  --fs-label:.6875rem;

  --r-sm:4px; --r-md:8px; --r-lg:14px; --r-pill:999px;
  --measure:66ch;

  --shadow:0 1px 2px rgba(16,27,36,.04), 0 12px 32px -14px rgba(16,27,36,.18);
  --shadow-lg:0 1px 2px rgba(16,27,36,.05), 0 26px 60px -22px rgba(16,27,36,.26);

  --dur-fast:140ms; --dur-base:220ms; --dur-slow:420ms;
  --ease-out:cubic-bezier(0.16,1,0.3,1);

  accent-color:var(--signal);
  caret-color:var(--signal);
  scrollbar-color:var(--graphite) var(--vellum);
}

*{margin:0;padding:0;box-sizing:border-box}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

body{
  font-family:var(--font);
  font-optical-sizing:auto;
  font-size:var(--fs-body);
  line-height:1.6;
  color:var(--ink);
  background:var(--vellum);
  -webkit-font-smoothing:antialiased;
}
button,input,select,textarea{font-family:inherit}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img,svg,video{display:block;max-width:100%}

/* Sheets read as translucent only if something sits behind them. */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;background:var(--ground);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.45;
  background-image:linear-gradient(var(--rule) 1px,transparent 1px),
                   linear-gradient(90deg,var(--rule) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(80rem 50rem at 50% 0%,#000,transparent 72%);
  mask-image:radial-gradient(80rem 50rem at 50% 0%,#000,transparent 72%);
}

h1,h2,h3,h4{font-weight:600;color:var(--navy);line-height:1.22;letter-spacing:-.02em}
h1{font-size:var(--fs-h1);line-height:1.12}
h2{font-size:var(--fs-h2)}
h3{font-size:var(--fs-h3)}
p{max-width:var(--measure)}
strong{font-weight:600}

.tnum,table,td,th,time{font-variant-numeric:tabular-nums slashed-zero;font-feature-settings:"tnum" 1,"zero" 1}

.eyebrow{
  display:block;font-size:var(--fs-label);font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--signal);margin-bottom:14px;
}
.eyebrow--teal{color:var(--teal)}
.eyebrow--mist{color:var(--mist)}
.lead{font-size:var(--fs-lead);line-height:1.5;letter-spacing:-.01em}
.muted{color:var(--graphite)}
.caption{font-size:var(--fs-caption);color:var(--graphite)}

:focus-visible{outline:3px solid var(--signal);outline-offset:3px;border-radius:var(--r-sm)}
.band--navy :focus-visible,
.hero-section :focus-visible,
.site-footer :focus-visible{outline-color:var(--paper)}
::selection{background:rgba(45,110,158,.18);color:var(--ink)}
.band--navy ::selection,.hero-section ::selection,.site-footer ::selection{background:rgba(255,255,255,.28);color:var(--paper)}

.skip-link{
  position:absolute;left:12px;top:-60px;z-index:60;background:var(--paper);color:var(--navy);
  padding:10px 16px;border-radius:var(--r-md);font-weight:600;font-size:.875rem;
  transition:top var(--dur-fast) var(--ease-out);
}
.skip-link:focus{top:12px}

/* ---------------- header ---------------- */
.navbar{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:14px 28px;
  background:var(--sheet-1);
  -webkit-backdrop-filter:blur(16px) saturate(1.1);
  backdrop-filter:blur(16px) saturate(1.1);
  border-bottom:1px solid var(--rule);
}
.logo a{display:flex;align-items:center;gap:11px}
.logo .logo-name{
  font-size:.8125rem;font-weight:600;letter-spacing:.17em;text-transform:uppercase;color:var(--navy);
}
.nav-links{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.nav-links li:not(.nav-actions) a{
  position:relative;display:inline-block;
  font-size:.8125rem;font-weight:500;letter-spacing:.01em;color:var(--ink);
  padding-bottom:5px;
  transition:color var(--dur-fast) var(--ease-out);
}
.nav-links li:not(.nav-actions) a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--signal);
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur-base) var(--ease-out);
}
.nav-links li:not(.nav-actions) a:hover{color:var(--signal)}
.nav-links li:not(.nav-actions) a:hover::after{transform:scaleX(1)}
.nav-links li:not(.nav-actions) a.active{color:var(--navy)}
.nav-links li:not(.nav-actions) a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px}
.lang-toggle{
  font-size:var(--fs-label);font-weight:600;letter-spacing:.12em;color:var(--graphite);
  border:1px solid var(--rule-strong);border-radius:var(--r-pill);padding:4px 11px;
  transition:color var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out);
}
.lang-toggle:hover{color:var(--signal);border-color:var(--signal)}
.lang-toggle:active{transform:scale(.94)}
.btn-clientes,.btn-nav{
  font-size:.75rem;font-weight:600;letter-spacing:.03em;padding:8px 15px;border-radius:var(--r-pill);
  border:1px solid transparent;
  transition:background var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out);
}
.btn-clientes{border-color:var(--rule-strong);color:var(--navy)}
.btn-clientes:hover{background:var(--wash-2)}
.btn-clientes:active,.btn-nav:active{transform:scale(.96)}
.btn-nav{background:var(--navy);color:var(--paper)}
.btn-nav:hover{background:var(--signal)}

/* ---------------- layout ---------------- */
.rail{max-width:1100px;margin:0 auto;padding:0 28px}
.rail--narrow{max-width:820px}
.band{padding:88px 0}
.band--tight{padding:56px 0}
.band--vellum{background:var(--wash-1)}
.band--navy{background:var(--navy);color:var(--paper)}
.band--navy h1,.band--navy h2,.band--navy h3{color:var(--paper)}
.band--navy p{color:var(--mist)}
.band-head{margin-bottom:40px}
.band-head h2{max-width:22ch}
.band-head p{margin-top:14px}

/* ---------------- hero, video preserved ---------------- */
.hero-section{position:relative;background:var(--navy);color:var(--paper);overflow:hidden}
.hero-section.has-video{min-height:min(86vh,760px);display:flex;align-items:center}
.hero-video{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;opacity:.5;
}
.hero-section.has-video::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(100deg,rgba(16,27,36,.92) 0%,rgba(29,63,92,.80) 46%,rgba(29,63,92,.42) 100%);
}
.hero-content{
  position:relative;z-index:2;max-width:1100px;margin:0 auto;padding:110px 28px 130px;width:100%;
}
.hero-content .panel{
  max-width:60ch;background:var(--sheet-dark);border:1px solid var(--rule-dark);
  border-radius:var(--r-lg);padding:34px 36px 36px;
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.hero-content h1{
  color:var(--paper);font-size:clamp(2rem,4.6vw,var(--fs-h1));letter-spacing:-.025em;max-width:20ch;
}
.hero-content .subtitle{
  color:var(--paper);font-size:var(--fs-lead);line-height:1.5;margin-top:18px;max-width:52ch;
}
.hero-content p{color:var(--mist);margin-top:14px;max-width:56ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-play-btn,.hero-sound-btn{
  display:inline-flex;align-items:center;gap:9px;cursor:pointer;
  font-size:.8125rem;font-weight:600;letter-spacing:.02em;
  background:var(--sheet-dark-2);color:var(--paper);
  border:1px solid var(--rule-dark);border-radius:var(--r-pill);padding:10px 18px;
  transition:background var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out);
}
.hero-play-btn:hover,.hero-sound-btn:hover{background:rgba(255,255,255,.2)}
.hero-play-btn:active,.hero-sound-btn:active{transform:scale(.96)}
.hero-sound-btn{position:absolute;right:22px;bottom:22px;z-index:3}

.btn-solid{
  display:inline-flex;align-items:center;gap:9px;
  font-size:.8125rem;font-weight:600;letter-spacing:.02em;
  background:var(--paper);color:var(--navy);border:1px solid transparent;
  border-radius:var(--r-pill);padding:11px 20px;
  transition:transform var(--dur-fast) var(--ease-out),background var(--dur-fast) var(--ease-out);
}
.btn-solid:hover{background:var(--mist)}
.btn-solid:active{transform:scale(.96)}
.btn-line{
  display:inline-flex;align-items:center;gap:9px;
  font-size:.8125rem;font-weight:600;letter-spacing:.02em;
  color:var(--navy);border:1px solid var(--rule-strong);border-radius:var(--r-pill);padding:11px 20px;
  transition:border-color var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out);
}
.btn-line:hover{border-color:var(--signal);color:var(--signal)}
.btn-line:active{transform:scale(.96)}
.btn-solid span,.btn-line span{display:inline-block;transition:transform var(--dur-fast) var(--ease-out)}
.btn-solid:hover span,.btn-line:hover span{transform:translateX(3px)}
.band--navy .btn-line{color:var(--paper);border-color:var(--rule-dark)}
.band--navy .btn-line:hover{border-color:var(--paper);color:var(--paper)}

/* ---------------- page banner, pages without video ---------------- */
.page-banner{
  background:var(--navy);color:var(--paper);padding:96px 0 84px;position:relative;overflow:hidden;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(46rem 26rem at 84% 0%,rgba(45,110,158,.45),transparent 62%),
             radial-gradient(38rem 24rem at 4% 100%,rgba(14,110,107,.30),transparent 60%);
}
.page-banner--data::before{
  background:radial-gradient(46rem 26rem at 84% 0%,rgba(14,110,107,.48),transparent 62%),
             radial-gradient(38rem 24rem at 4% 100%,rgba(45,110,158,.30),transparent 60%);
}
.page-banner .rail{position:relative;z-index:1}
.page-banner h1{color:var(--paper);font-size:clamp(2rem,5vw,var(--fs-h1));max-width:30ch}
.page-banner p{color:var(--mist);margin-top:18px;font-size:var(--fs-lead);line-height:1.5;max-width:56ch}
.subnav{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.subnav a{
  font-size:.8125rem;font-weight:600;letter-spacing:.02em;color:var(--paper);
  border:1px solid var(--rule-dark);border-radius:var(--r-pill);padding:8px 16px;
  transition:background var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out);
}
.subnav a:hover{background:var(--sheet-dark-2);border-color:var(--paper)}
.subnav a:active{transform:scale(.96)}

/* ---------------- sheets and cards ---------------- */
.sheet{
  background:var(--sheet-1);
  -webkit-backdrop-filter:blur(14px) saturate(1.1);
  backdrop-filter:blur(14px) saturate(1.1);
  border:1px solid var(--rule);border-radius:var(--r-lg);box-shadow:var(--shadow);
}
.band--navy .sheet{background:var(--sheet-dark);border-color:var(--rule-dark)}
/* Never nest blur inside blur: text contrast falls below the floor. */
.sheet .sheet{background:var(--sheet-2);backdrop-filter:none;-webkit-backdrop-filter:none;box-shadow:none}

.duo{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.practice-card{
  padding:32px 34px 34px;display:flex;flex-direction:column;gap:14px;
  transition:transform var(--dur-base) var(--ease-out),box-shadow var(--dur-base) var(--ease-out);
}
.practice-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.practice-card h3{font-size:var(--fs-h3);max-width:18ch}
.practice-card .scope{
  font-size:var(--fs-caption);color:var(--graphite);border-top:1px solid var(--rule);
  padding-top:14px;margin-top:auto;
}
.band--navy .practice-card .scope{color:var(--mist);border-top-color:var(--rule-dark)}
.practice-card .more{
  font-size:.8125rem;font-weight:600;color:var(--signal);display:inline-flex;align-items:center;gap:7px;
}
.practice-card--data .more{color:var(--teal)}
.band--navy .practice-card .more{color:var(--paper)}
.practice-card .more:hover{text-decoration:underline;text-underline-offset:3px}
.practice-card .more span{display:inline-block;transition:transform var(--dur-fast) var(--ease-out)}
.practice-card .more:hover span{transform:translateX(4px)}

/* ---------------- stages ---------------- */
.stages{display:flex;flex-direction:column;gap:2px;margin-top:8px}
.stage{
  display:grid;grid-template-columns:64px 1fr;gap:28px;
  padding:32px 24px;margin:0 -24px;border-top:1px solid var(--rule);border-radius:var(--r-md);
  transition:background var(--dur-base) var(--ease-out);
}
.stage:hover{background:var(--wash-1)}
.stage:last-child{border-bottom:1px solid var(--rule)}
.stage-no{
  font-size:var(--fs-label);font-weight:600;letter-spacing:.12em;color:var(--graphite);
  font-variant-numeric:tabular-nums;padding-top:7px;
}
.stage h3{max-width:26ch}
.stage .summary{margin-top:12px;font-size:1.0625rem;line-height:1.55}
.stage .proof{
  margin-top:22px;padding:20px 22px;background:var(--wash-2);border-radius:var(--r-md);
  border-left:2px solid var(--signal);
}
.stage--data .proof{border-left-color:var(--teal)}
.stage .proof strong{display:block;color:var(--navy);font-size:.9375rem;margin-bottom:8px}
.stage .proof p{font-size:.9375rem;color:var(--graphite)}

/* ---------------- symptoms ---------------- */
.symptoms{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:8px}
.symptom{
  padding:24px 24px 26px;border-radius:var(--r-md);background:var(--sheet-2);border:1px solid var(--rule);
  transition:transform var(--dur-base) var(--ease-out),box-shadow var(--dur-base) var(--ease-out),border-color var(--dur-base) var(--ease-out);
}
.symptom:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--rule-strong)}
.symptom h3{font-size:1.0625rem;margin-bottom:8px}
.symptom p{font-size:.9375rem;color:var(--graphite)}

/* ---------------- bridge ---------------- */
.bridge{display:grid;grid-template-columns:1.1fr 1fr;gap:34px;align-items:center;padding:40px 40px 42px}
.bridge ul{display:flex;flex-direction:column;gap:12px}
.bridge li{
  font-size:.9375rem;padding-left:22px;position:relative;color:var(--mist);
}
.bridge li::before{
  content:"";position:absolute;left:0;top:10px;width:10px;height:2px;background:var(--paper);border-radius:2px;
}

/* ---------------- life cycle, horizontal scroller ----------------
   One stage fills the frame at a time, not three side by side, so
   there's something to actually scroll to. Native scroll-snap gives
   touch and trackpad momentum and rubber-banding for free; motion.js
   adds mouse drag-to-scroll, prev/next buttons, and dots that track
   the active card. */
.lifecycle{padding-bottom:64px}
.lifecycle .band-head{margin-bottom:36px}
.lifecycle-track{
  display:flex;overflow-x:auto;overflow-y:hidden;
  -webkit-overflow-scrolling:touch;
  scroll-snap-type:x mandatory;
  cursor:grab;scrollbar-width:none;
  border-radius:var(--r-lg);
}
@media (prefers-reduced-motion:no-preference){.lifecycle-track{scroll-behavior:smooth}}
.lifecycle-track::-webkit-scrollbar{display:none}
.lifecycle-track.is-grabbing{cursor:grabbing;scroll-snap-type:none}
.lifecycle-card{
  scroll-snap-align:start;flex:0 0 100%;width:100%;
  display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
  background:var(--sheet-dark);border:1px solid var(--rule-dark);border-radius:var(--r-lg);
  padding:56px 48px 52px;
  -webkit-backdrop-filter:blur(14px) saturate(1.1);backdrop-filter:blur(14px) saturate(1.1);
}
.lifecycle-no{
  font-size:var(--fs-label);font-weight:600;letter-spacing:.12em;color:var(--mist);
  font-variant-numeric:tabular-nums;
}
.lifecycle-card .eyebrow{margin-bottom:0}
.lifecycle-card h3{color:var(--paper);font-size:var(--fs-h3);max-width:40ch}
.lifecycle-card p{color:var(--mist);max-width:60ch}
.lifecycle-card .more{
  margin-top:4px;font-size:.8125rem;font-weight:600;color:var(--paper);
  display:inline-flex;align-items:center;gap:7px;
}
.lifecycle-card .more:hover{text-decoration:underline;text-underline-offset:3px}
.lifecycle-card .more span{display:inline-block;transition:transform var(--dur-fast) var(--ease-out)}
.lifecycle-card .more:hover span{transform:translateX(4px)}

.lifecycle-nav{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;margin-top:24px}
.lifecycle-controls{display:flex;align-items:center;gap:14px}
.lifecycle-btn{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;flex:0 0 auto;
  border-radius:var(--r-pill);border:1px solid var(--rule-dark);background:var(--sheet-dark-2);color:var(--paper);
  cursor:pointer;transition:background var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out),opacity var(--dur-fast) var(--ease-out);
}
.lifecycle-btn:hover{background:rgba(255,255,255,.22)}
.lifecycle-btn:active{transform:scale(.92)}
.lifecycle-btn:disabled{opacity:.35;cursor:default;transform:none}
.lifecycle-dots{display:flex;align-items:center;gap:8px}
.lifecycle-dot{
  width:8px;height:8px;padding:0;border:0;border-radius:50%;background:var(--rule-dark);cursor:pointer;
  transition:background var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out);
}
.lifecycle-dot.is-active{background:var(--paper);transform:scale(1.25)}

@media (max-width:900px){
  .lifecycle-card{padding:44px 28px 40px}
}

/* ---------------- proof strip ---------------- */
.strip{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--rule)}
.strip > div{padding:26px 24px;border-bottom:1px solid var(--rule);border-right:1px solid var(--rule)}
.strip > div:last-child{border-right:0}
.strip dt{font-size:var(--fs-label);font-weight:600;letter-spacing:.13em;text-transform:uppercase;color:var(--graphite);margin-bottom:9px}
.strip dd{font-size:.9375rem;color:var(--ink)}

/* ---------------- case studies ---------------- */
.cases{display:flex;flex-direction:column;gap:20px}
.case{
  padding:30px 32px 32px;
  transition:transform var(--dur-base) var(--ease-out),box-shadow var(--dur-base) var(--ease-out);
}
.case:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.case-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px;margin-bottom:18px}
.case-head h3{font-size:1.25rem;max-width:34ch}
.tag{
  font-size:var(--fs-label);font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  padding:4px 10px;border-radius:var(--r-sm);background:var(--wash-2);color:var(--graphite);
}
.tag--infra{background:rgba(45,110,158,.12);color:var(--signal)}
.tag--data{background:rgba(14,110,107,.12);color:var(--teal)}
.case dl{display:grid;grid-template-columns:130px 1fr;gap:10px 22px;font-size:.9375rem}
.case dt{font-size:var(--fs-label);font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--graphite);padding-top:3px}
.case dd{color:var(--ink)}
.notice{
  padding:18px 22px;border-radius:var(--r-md);background:var(--wash-2);
  border-left:2px solid var(--graphite);font-size:.9375rem;color:var(--graphite);margin-bottom:28px;
}

/* ---------------- contact ---------------- */
.contact-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:34px}
.contact-block h3{font-size:1.0625rem;margin-bottom:8px}
.contact-block + .contact-block{margin-top:26px;padding-top:26px;border-top:1px solid var(--rule)}
.contact-block p{font-size:.9375rem;color:var(--graphite)}
.contact-card{
  padding:32px 34px;height:fit-content;
  transition:transform var(--dur-base) var(--ease-out),box-shadow var(--dur-base) var(--ease-out);
}
.contact-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.contact-card .addr{font-size:.9375rem;color:var(--graphite);line-height:1.9;margin-top:16px}
.contact-card a.mail{
  font-size:1.0625rem;font-weight:600;color:var(--signal);word-break:break-all;
  transition:color var(--dur-fast) var(--ease-out);
}
.contact-card a.mail:hover{text-decoration:underline;text-underline-offset:3px;color:var(--teal)}

/* ---------------- footer ---------------- */
.site-footer{background:var(--navy);color:var(--mist);padding:56px 0 40px;margin-top:0}
.footer-grid{display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between;align-items:flex-start}
.site-footer .logo-name{color:var(--paper)}
.footer-nav{display:flex;flex-wrap:wrap;gap:20px;font-size:.8125rem}
.site-footer a{transition:color var(--dur-fast) var(--ease-out)}
.site-footer a:hover{color:var(--paper)}
.footer-base{
  margin-top:34px;padding-top:20px;border-top:1px solid var(--rule-dark);
  font-size:var(--fs-caption);display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
}

/* ---------------- motion, scroll-triggered reveal ----------------
   motion.js adds .pre-reveal (only when JS + IntersectionObserver are
   available) and then .is-visible once the element enters the
   viewport. Elements are fully visible by default, so a page with no
   JS, or with reduced motion requested, never hides content waiting
   on an animation that will not run. */
@media (prefers-reduced-motion:no-preference){
  .pre-reveal{
    opacity:0;transform:translateY(16px) scale(.985);
    transition:opacity var(--dur-slow) var(--ease-out),transform var(--dur-slow) var(--ease-out);
  }
  .pre-reveal.is-visible{opacity:1;transform:none}
}

/* ---------------- responsive ---------------- */
@media (max-width:900px){
  .navbar{padding:12px 18px;flex-wrap:wrap;gap:12px}
  .nav-links{gap:16px;width:100%;justify-content:flex-start}
  .rail{padding:0 20px}
  .band{padding:60px 0}
  .duo,.bridge,.contact-grid{grid-template-columns:1fr}
  .symptoms,.strip{grid-template-columns:1fr}
  .strip > div{border-right:0}
  .stage{grid-template-columns:1fr;gap:0}
  .stage-no{padding-top:0;margin-bottom:8px}
  .case dl{grid-template-columns:1fr;gap:4px 0}
  .case dd{margin-bottom:12px}
  .hero-content{padding:80px 20px 96px}
  .hero-content .panel{padding:26px 24px 28px}
  .hero-sound-btn{right:16px;bottom:16px}
}

/* Backdrop blur is missing in a few browsers. Fall back to an opaque
   sheet instead of an unreadable one. */
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .sheet,.navbar{background:var(--sheet-2)}
  .band--navy .sheet,.hero-content .panel{background:#2B4B66}
}