:root{
  --abyss:#03121F;
  --deep:#062537;
  --mid:#0A4E86;
  --brand:#0F6FBB;
  --surf:#3FA9F5;
  --glow:#22D3EE;
  --sand:#F2EDE4;
  --ink:#EAF4FB;
  --muted:#8FAFC6;
  --line:rgba(143,175,198,.16);
  --display:"Bricolage Grotesque",serif;
  --body:"Archivo",sans-serif;
  --mono:"DM Mono",ui-monospace,monospace;
  --shell:min(1180px,92vw);
}

*{box-sizing:border-box;margin:0;padding:0}
/* width/height attrs on <img> apply as presentational hints; without this the
   height attr survives our CSS width and squashes the aspect ratio. */
img{max-width:100%;height:auto;display:block}
/* class beats the element rule above, so cover images keep their fill height */
img.cover{width:100%;height:100%;object-fit:cover}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--abyss);
  color:var(--ink);
  font-family:var(--body);
  font-size:17px;
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

/* ── grain + caustics ──────────────────────────────────────── */
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:99;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

.shell{width:var(--shell);margin-inline:auto}

/* ── nav ───────────────────────────────────────────────────── */
header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  padding:18px 0;
  transition:padding .4s ease;
}
/* The blur lives on a pseudo-element, not on <header> itself: an ancestor with
   backdrop-filter clips descendants to its own box in Chrome, which made the
   language menu hit-testable but invisible. */
header::before{
  content:"";position:absolute;inset:0;z-index:-1;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:linear-gradient(to bottom,rgba(3,18,31,.86),rgba(3,18,31,0));
  transition:background .4s ease,border-color .4s ease;
  border-bottom:1px solid transparent;
}
header.docked{padding:12px 0}
header.docked::before{background:rgba(3,18,31,.92);border-bottom-color:var(--line)}
header .shell{display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand img{height:26px;display:block}
.nav-cta{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;
  color:var(--ink);text-decoration:none;
  border:1px solid var(--line);border-radius:999px;padding:9px 18px;
  transition:border-color .25s,background .25s,color .25s;
}
.nav-cta:hover{border-color:var(--glow);color:var(--glow);background:rgba(34,211,238,.07)}

/* ── depth rail ────────────────────────────────────────────── */
.rail{
  position:fixed;left:max(18px,calc((100vw - var(--shell))/2 - 46px));top:0;bottom:0;
  width:1px;background:linear-gradient(to bottom,transparent,var(--line) 12%,var(--line) 88%,transparent);
  z-index:20;pointer-events:none;
}
.rail::before{
  content:"";position:absolute;left:-1px;top:0;width:3px;height:var(--progress,0%);
  background:linear-gradient(to bottom,var(--surf),var(--glow));
  box-shadow:0 0 14px rgba(34,211,238,.6);
  transition:height .12s linear;
}
.rail-depth{
  position:fixed;left:max(18px,calc((100vw - var(--shell))/2 - 46px));
  top:var(--progress,0%);margin-top:-11px;
  transform:translateX(-50%);
  font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;color:var(--glow);
  z-index:21;white-space:nowrap;pointer-events:none;
  background:var(--abyss);border:1px solid var(--line);border-radius:999px;
  padding:3px 9px;transition:top .12s linear;
}
@media(max-width:1080px){.rail,.rail-depth{display:none}}

/* ── hero ──────────────────────────────────────────────────── */
.hero{position:relative;padding:132px 0 84px;overflow:hidden}
.hero-media{position:absolute;inset:0;z-index:0;overflow:hidden}
.hero-media img{opacity:.85;object-position:60% 46%}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(100deg,rgba(3,18,31,.95) 2%,rgba(3,18,31,.78) 30%,rgba(3,18,31,.3) 58%,rgba(3,18,31,.12) 100%),
    linear-gradient(to bottom,rgba(3,18,31,.82),rgba(3,18,31,0) 24%,rgba(3,18,31,.42) 76%,var(--abyss));
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(900px 640px at 16% 26%,rgba(63,169,245,.24),transparent 70%),
    radial-gradient(780px 560px at 86% 6%,rgba(34,211,238,.17),transparent 70%),
    radial-gradient(1200px 420px at 50% 100%,rgba(10,78,134,.34),transparent 72%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.16;
  background:repeating-linear-gradient(101deg,transparent 0 46px,rgba(180,230,255,.05) 96px,transparent 146px,transparent 210px);
  mask-image:linear-gradient(to bottom,#000,transparent 78%);
  -webkit-mask-image:linear-gradient(to bottom,#000,transparent 78%);
  animation:drift 22s ease-in-out infinite alternate;
}
@keyframes drift{from{transform:translateX(-3%)}to{transform:translateX(3%)}}

.hero .shell{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--glow);margin-bottom:26px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--glow)}

h1{
  font-family:var(--display);font-weight:800;
  font-size:clamp(2.9rem,6.4vw,5.1rem);line-height:.95;letter-spacing:-.035em;
  margin-bottom:24px;
}
h1 em{
  font-style:normal;display:block;padding-bottom:.06em;
  /* the third line is a kicker, not display type — at full h1 size it wraps and
     strands a hyphen at the end of a line */
  font-size:.44em;letter-spacing:-.01em;margin-top:.5em;
  background:linear-gradient(100deg,var(--surf),var(--glow) 60%,var(--sand));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lede{font-size:clamp(1.02rem,1.5vw,1.2rem);color:var(--muted);max-width:33ch;margin-bottom:38px}

/* ── store badges ──────────────────────────────────────────── */
.badges{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px}
.badge{
  display:inline-flex;align-items:center;gap:12px;text-decoration:none;
  background:var(--sand);color:#0A1520;
  border-radius:14px;padding:11px 20px 11px 17px;
  transition:transform .22s cubic-bezier(.2,.8,.3,1),box-shadow .22s;
  box-shadow:0 10px 26px -12px rgba(0,0,0,.85);
}
.badge:hover{transform:translateY(-3px);box-shadow:0 18px 34px -14px rgba(34,211,238,.5)}
.badge svg{width:23px;height:23px;flex:none}
.badge span{display:block;line-height:1.2}
.badge .b1{font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;opacity:.62}
.badge .b2{font-family:var(--display);font-weight:600;font-size:16px;letter-spacing:-.01em}

.weblink{
  display:inline-block;text-decoration:none;
  font-family:var(--mono);font-size:13px;line-height:1.7;color:var(--muted);
  border-bottom:1px solid transparent;padding-bottom:2px;transition:color .25s,border-color .25s;
}
.weblink:hover{color:var(--glow);border-color:var(--glow)}
.weblink b{color:var(--ink);font-weight:500}

/* ── hero phone ────────────────────────────────────────────── */
.hero-shot{position:relative;justify-self:center}
.hero-shot img{
  width:min(292px,70vw);display:block;border-radius:24px;
  box-shadow:0 50px 90px -30px rgba(0,0,0,.95),0 0 0 1px rgba(143,175,198,.14);
  animation:bob 7s ease-in-out infinite;
}
@keyframes bob{0%,100%{transform:translateY(0) rotate(-1.4deg)}50%{transform:translateY(-16px) rotate(-.4deg)}}
.hero-shot::before{
  content:"";position:absolute;inset:-14% -22%;z-index:-1;border-radius:50%;
  background:radial-gradient(circle,rgba(15,111,187,.42),transparent 68%);filter:blur(46px);
}

/* ── stats ─────────────────────────────────────────────────── */
.stats{
  border-block:1px solid var(--line);
  display:grid;grid-template-columns:repeat(4,1fr);
}
.stat{padding:34px 22px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat b{display:block;font-family:var(--display);font-weight:800;font-size:clamp(1.7rem,3vw,2.5rem);letter-spacing:-.03em;color:var(--sand)}
.stat span{font-family:var(--mono);font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:var(--muted)}

/* ── sections ──────────────────────────────────────────────── */
section{position:relative;padding:104px 0}
.sec-head{max-width:44ch;margin-bottom:58px}
.sec-tag{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--surf);display:block;margin-bottom:16px;
}
h2{
  font-family:var(--display);font-weight:800;
  font-size:clamp(2rem,4.2vw,3.2rem);line-height:1.02;letter-spacing:-.03em;
}
.sec-head p{color:var(--muted);margin-top:18px;font-size:1.05rem}

/* ── feature grid ──────────────────────────────────────────── */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line)}
@media(max-width:960px){.features{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.features{grid-template-columns:1fr}}
.feat{
  background:var(--abyss);padding:38px 32px 42px;position:relative;
  transition:background .35s ease;
}
.feat:hover{background:var(--deep)}
.feat .n{
  font-family:var(--mono);font-size:11px;color:var(--surf);letter-spacing:.16em;
  display:block;margin-bottom:20px;
}
.feat h3{
  font-family:var(--display);font-weight:600;font-size:1.35rem;letter-spacing:-.02em;
  margin-bottom:12px;line-height:1.15;
}
.feat p{color:var(--muted);font-size:.96rem}
.feat ul{list-style:none;margin-top:16px;display:grid;gap:9px}
.feat li{
  color:var(--muted);font-size:.9rem;padding-left:19px;position:relative;line-height:1.45;
}
.feat li::before{
  content:"";position:absolute;left:0;top:.55em;width:7px;height:7px;border-radius:50%;
  border:1.5px solid var(--surf);
}

/* ── photographic band ─────────────────────────────────────── */
.band{position:relative;overflow:hidden;min-height:min(74vh,540px);display:grid;align-items:center;padding:104px 0}
.band>img{position:absolute;inset:0;z-index:0}
.band::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(96deg,rgba(3,18,31,.97) 0%,rgba(3,18,31,.93) 24%,rgba(3,18,31,.72) 44%,rgba(3,18,31,.32) 70%,rgba(3,18,31,.12) 100%),
    linear-gradient(to bottom,var(--abyss),rgba(3,18,31,0) 22%,rgba(3,18,31,0) 74%,var(--abyss));
}
.band .shell{position:relative;z-index:2}
.band-quote{
  font-family:var(--display);font-weight:800;
  font-size:clamp(1.9rem,4vw,3.1rem);line-height:1.04;letter-spacing:-.03em;
  max-width:17ch;text-wrap:balance;
  text-shadow:0 2px 28px rgba(2,10,18,.85);
}
.band-quote em{
  font-style:normal;
  background:linear-gradient(100deg,var(--surf),var(--glow));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.band-sub{color:var(--ink);opacity:.82;margin-top:20px;max-width:38ch;font-size:1.02rem;text-shadow:0 1px 16px rgba(2,10,18,.9)}

/* ── split editorial ───────────────────────────────────────── */
.split .shell{display:grid;grid-template-columns:.82fr 1.18fr;gap:64px;align-items:center}
.split-media{position:relative}
.split-media img{
  border-radius:20px;
  box-shadow:0 40px 70px -30px rgba(0,0,0,.95),0 0 0 1px rgba(143,175,198,.14);
}
.split-media::before{
  content:"";position:absolute;inset:-12% -14%;z-index:-1;border-radius:50%;
  background:radial-gradient(circle,rgba(15,111,187,.34),transparent 68%);filter:blur(44px);
}
.split h2{margin-bottom:20px}
.split p{color:var(--muted);max-width:46ch}
.split p+p{margin-top:16px}
@media(max-width:900px){
  .split .shell{grid-template-columns:1fr;gap:38px}
  .split-media{max-width:340px;margin-inline:auto}
}

/* ── gallery ───────────────────────────────────────────────── */
.gallery{
  display:flex;gap:22px;overflow-x:auto;padding:6px 0 34px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
  scrollbar-width:thin;scrollbar-color:var(--mid) transparent;
}
.gallery::-webkit-scrollbar{height:5px}
.gallery::-webkit-scrollbar-thumb{background:var(--mid);border-radius:9px}
.gallery img{
  width:270px;flex:none;border-radius:20px;scroll-snap-align:center;display:block;
  box-shadow:0 26px 52px -22px rgba(0,0,0,.9),0 0 0 1px rgba(143,175,198,.12);
  transition:transform .3s cubic-bezier(.2,.8,.3,1);
}
.gallery img:hover{transform:translateY(-8px)}
.gallery-hint{
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);
}

/* ── closing CTA ───────────────────────────────────────────── */
.close{
  position:relative;text-align:center;padding:132px 0 140px;overflow:hidden;
  background:linear-gradient(to bottom,var(--abyss),#020C15);
}
.close>img{position:absolute;inset:0;z-index:0;opacity:.78;object-position:50% 62%}
.close::before{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(52% 54% at 50% 48%,rgba(3,18,31,.72),rgba(3,18,31,.38) 76%),
    linear-gradient(to bottom,var(--abyss),rgba(3,18,31,.24) 26%,rgba(2,12,21,.7) 78%,#020C15);
}
.close h2,.close p{text-shadow:0 2px 24px rgba(2,10,18,.9)}
.close .shell{position:relative;z-index:2}
.close h2{margin-bottom:20px}
.close p{color:var(--muted);max-width:46ch;margin:0 auto 38px}
.close .badges{justify-content:center}
.close .weblink{justify-content:center}

/* ── footer ────────────────────────────────────────────────── */
footer{border-top:1px solid var(--line);padding:44px 0;background:#020C15}
footer .shell{display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between}
footer img{height:22px;opacity:.8}
.f-links{display:flex;flex-wrap:wrap;gap:26px}
footer a{color:var(--muted);text-decoration:none;font-size:.9rem;transition:color .25s}
footer a:hover{color:var(--glow)}
.f-note{font-family:var(--mono);font-size:11px;color:rgba(143,175,198,.5);width:100%;line-height:1.7}

/* ── reveal ────────────────────────────────────────────────── */
.rv{opacity:0;transform:translateY(26px);transition:opacity .8s cubic-bezier(.2,.8,.3,1),transform .8s cubic-bezier(.2,.8,.3,1)}
.rv.in{opacity:1;transform:none}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important}
  .rv{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

@media(max-width:900px){
  /* text is centred here, so it crosses the bright side of the photo —
     swap the directional scrim for an even vertical one */
  .hero-media img{opacity:.7}
  .hero-media::after{
    background:linear-gradient(to bottom,rgba(3,18,31,.92),rgba(3,18,31,.7) 34%,rgba(3,18,31,.8) 70%,var(--abyss));
  }
  .band::after{
    background:linear-gradient(to bottom,var(--abyss),rgba(3,18,31,.72) 26%,rgba(3,18,31,.78) 70%,var(--abyss));
  }
  .band-quote{max-width:none}
  .hero{padding:130px 0 70px}
  .hero .shell{grid-template-columns:1fr;gap:48px;text-align:center}
  .lede{max-width:none}
  .eyebrow,.badges{justify-content:center}
  .eyebrow::before{display:none}
  .stats{grid-template-columns:1fr 1fr}
  .stat{border-left:1px solid var(--line);border-top:1px solid var(--line)}
  .stat:nth-child(-n+2){border-top:0}
  .stat:nth-child(odd){border-left:0}
  section{padding:76px 0}
  footer .shell{justify-content:center;text-align:center}
  .f-links{justify-content:center}
}

/* ══ right-to-left ══════════════════════════════════════════
   Arabic. The layout is mostly logical already (grid/flex), so
   what needs mirroring is the hand-authored *directional* art:
   the angled scrims, the depth rail, and the arrow glyphs. */
[dir="rtl"] .rail,
[dir="rtl"] .rail-depth{
  left:auto;right:max(18px,calc((100vw - var(--shell))/2 - 46px));
}
[dir="rtl"] .rail-depth{transform:translateX(50%)}
[dir="rtl"] .rail::before{left:auto;right:-1px}

/* flip the angled gradients so the dark side stays under the text */
[dir="rtl"] .hero-media::after{
  background:
    linear-gradient(260deg,rgba(3,18,31,.95) 2%,rgba(3,18,31,.78) 30%,rgba(3,18,31,.3) 58%,rgba(3,18,31,.12) 100%),
    linear-gradient(to bottom,rgba(3,18,31,.82),rgba(3,18,31,0) 24%,rgba(3,18,31,.42) 76%,var(--abyss));
}
[dir="rtl"] .band::after{
  background:
    linear-gradient(264deg,rgba(3,18,31,.97) 0%,rgba(3,18,31,.93) 24%,rgba(3,18,31,.72) 44%,rgba(3,18,31,.32) 70%,rgba(3,18,31,.12) 100%),
    linear-gradient(to bottom,var(--abyss),rgba(3,18,31,0) 22%,rgba(3,18,31,0) 74%,var(--abyss));
}
[dir="rtl"] .hero-media img{object-position:40% 46%}
[dir="rtl"] .feat li{padding-left:0;padding-right:19px}
[dir="rtl"] .feat li::before{left:auto;right:0}
[dir="rtl"] .stat{border-left:0;border-right:1px solid var(--line)}
[dir="rtl"] .stat:first-child{border-right:0}
/* the ↗ and → glyphs point the wrong way once mirrored */
[dir="rtl"] .weblink .arrow{display:inline-block;transform:scaleX(-1)}
[dir="rtl"] .gallery-hint .arrow{display:inline-block;transform:scaleX(-1)}

@media(max-width:900px){
  [dir="rtl"] .stat{border-right:1px solid var(--line)}
  [dir="rtl"] .stat:nth-child(odd){border-right:0}
}

/* ══ script-specific type ═══════════════════════════════════
   Bricolage Grotesque and Archivo have no Arabic, Japanese or
   Chinese coverage — without these the browser silently falls
   back to a system font and the page loses its voice. */
:root[lang="ar"]{--display:"Noto Kufi Arabic",sans-serif;--body:"Noto Sans Arabic",sans-serif;--mono:"Noto Sans Arabic",monospace}
:root[lang="ja"]{--display:"Noto Sans JP",sans-serif;--body:"Noto Sans JP",sans-serif;--mono:"Noto Sans JP",monospace}
:root[lang="zh"]{--display:"Noto Sans SC",sans-serif;--body:"Noto Sans SC",sans-serif;--mono:"Noto Sans SC",monospace}
/* CJK and Arabic don't take the tight tracking Latin display type wants */
:root[lang="ar"] h1,:root[lang="ja"] h1,:root[lang="zh"] h1,
:root[lang="ar"] h2,:root[lang="ja"] h2,:root[lang="zh"] h2,
:root[lang="ar"] .band-quote,:root[lang="ja"] .band-quote,:root[lang="zh"] .band-quote{
  letter-spacing:0;line-height:1.22;
}
/* A CJK glyph is a full em, so the Latin display sizes fit only ~7 characters
   per line and strand single characters on their own line. Scale down, and stop
   the browser breaking before closing punctuation. */
:root[lang="ja"],:root[lang="zh"]{ line-break:strict; word-break:normal; overflow-wrap:normal }
:root[lang="ja"] h1,:root[lang="zh"] h1{ font-size:clamp(2.1rem,3.6vw,3.1rem) }
:root[lang="ja"] h2,:root[lang="zh"] h2{ font-size:clamp(1.6rem,2.9vw,2.3rem) }
:root[lang="ja"] .band-quote,:root[lang="zh"] .band-quote{ font-size:clamp(1.5rem,2.8vw,2.2rem);max-width:20em }
/* `ch` is the width of a Latin zero — a 44ch column is absurdly wide in CJK */
:root[lang="ja"] .sec-head,:root[lang="zh"] .sec-head{ max-width:26em }
:root[lang="ja"] .lede,:root[lang="zh"] .lede{ max-width:22em }
:root[lang="ar"] .sec-head{ max-width:34em }
:root[lang="ar"] .lede{ max-width:26em }
:root[lang="ar"] .eyebrow,:root[lang="ja"] .eyebrow,:root[lang="zh"] .eyebrow,
:root[lang="ar"] .sec-tag,:root[lang="ja"] .sec-tag,:root[lang="zh"] .sec-tag,
:root[lang="ar"] .stat span,:root[lang="ja"] .stat span,:root[lang="zh"] .stat span,
:root[lang="ar"] .feat .n,:root[lang="ja"] .feat .n,:root[lang="zh"] .feat .n{
  letter-spacing:.06em;
  /* these labels are uppercased in Latin locales; here the only thing that
     would uppercase is embedded brand text, turning iPhone into IPHONE */
  text-transform:none;
}

/* ══ language switcher ══════════════════════════════════════ */
.lang{position:relative}
.lang summary{
  list-style:none;cursor:pointer;
  font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;
  color:var(--ink);border:1px solid var(--line);border-radius:999px;
  padding:9px 14px;display:inline-flex;align-items:center;gap:7px;
  transition:border-color .25s,color .25s;
}
.lang summary::-webkit-details-marker{display:none}
.lang summary:hover{border-color:var(--glow);color:var(--glow)}
.lang[open] summary{border-color:var(--glow);color:var(--glow)}
.lang-menu{
  position:absolute;top:calc(100% + 8px);inset-inline-end:0;z-index:60;
  background:rgba(3,18,31,.97);border:1px solid var(--line);border-radius:14px;
  padding:7px;min-width:184px;
  box-shadow:0 24px 48px -20px rgba(0,0,0,.95);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  display:grid;gap:1px;max-height:min(64vh,420px);overflow-y:auto;
}
.lang-menu a{
  display:block;padding:8px 12px;border-radius:9px;
  color:var(--muted);text-decoration:none;font-size:.9rem;
  transition:background .2s,color .2s;
}
.lang-menu a:hover{background:rgba(34,211,238,.09);color:var(--ink)}
.lang-menu a[aria-current="true"]{color:var(--glow);background:rgba(34,211,238,.07)}
@media(max-width:560px){
  .nav-cta{display:none}
}

/* ══════════════════════════════════════════════════════════════
   diveisc.com — components beyond the app landing page
   ══════════════════════════════════════════════════════════════ */

/* ── site nav ─────────────────────────────────────────────── */
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  color:var(--ink);text-decoration:none;font-size:.93rem;
  opacity:.86;transition:opacity .2s,color .2s;white-space:nowrap;
}
.nav-links a:hover{opacity:1;color:var(--glow)}
.nav-cta.solid{
  background:var(--sand);color:#0A1520;border-color:transparent;font-weight:600;
}
.nav-cta.solid:hover{background:#fff;color:#0A1520;border-color:transparent}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px;color:var(--ink)}
.burger svg{width:24px;height:24px;display:block}
@media(max-width:1080px){
  .nav-links{
    position:absolute;top:100%;inset-inline:0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(3,18,31,.98);border-block:1px solid var(--line);
    padding:8px 0;display:none;
  }
  .nav-links a{padding:13px max(18px,calc((100vw - var(--shell))/2));font-size:1rem}
  nav.open .nav-links{display:flex}
  .burger{display:block}
}

/* ── hero (site) ──────────────────────────────────────────── */
.hero-site{position:relative;overflow:hidden;padding:150px 0 96px;min-height:min(88vh,760px);display:grid;align-items:center}
.hero-site>img{position:absolute;inset:0;z-index:0;opacity:.8;object-position:50% 42%}
.hero-site::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    linear-gradient(96deg,rgba(3,18,31,.95) 0%,rgba(3,18,31,.8) 34%,rgba(3,18,31,.34) 64%,rgba(3,18,31,.2) 100%),
    linear-gradient(to bottom,rgba(3,18,31,.8),rgba(3,18,31,0) 26%,rgba(3,18,31,.5) 74%,var(--abyss));
}
.hero-site .shell{position:relative;z-index:2}
.hero-site h1{max-width:15ch;text-wrap:balance}
.hero-site .lede{max-width:46ch;font-size:clamp(1.05rem,1.6vw,1.3rem)}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.btn{
  display:inline-flex;align-items:center;gap:10px;text-decoration:none;
  border-radius:12px;padding:14px 24px;font-weight:600;font-size:1rem;
  transition:transform .2s cubic-bezier(.2,.8,.3,1),box-shadow .2s,background .2s,border-color .2s;
}
.btn-primary{background:var(--sand);color:#0A1520;box-shadow:0 12px 30px -14px rgba(0,0,0,.9)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 38px -16px rgba(34,211,238,.55)}
.btn-ghost{border:1px solid rgba(234,244,251,.34);color:var(--ink)}
.btn-ghost:hover{border-color:var(--glow);color:var(--glow);background:rgba(34,211,238,.07)}

/* ── course category cards ────────────────────────────────── */
.cats{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:800px){.cats{grid-template-columns:1fr}}
.cat{
  position:relative;overflow:hidden;border-radius:22px;min-height:340px;
  display:flex;align-items:flex-end;text-decoration:none;isolation:isolate;
  color:var(--ink);   /* the card is an <a>; without this the h3 takes UA link blue */
  box-shadow:0 0 0 1px rgba(143,175,198,.14);
}
.cat>img{position:absolute;inset:0;z-index:-2;transition:transform .7s cubic-bezier(.2,.8,.3,1)}
.cat::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(to top,rgba(2,12,21,.94) 8%,rgba(3,18,31,.5) 52%,rgba(3,18,31,.2) 100%);
}
.cat:hover>img{transform:scale(1.06)}
.cat-body{padding:30px 30px 32px}
.cat .count{
  font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--glow);display:block;margin-bottom:10px;
}
.cat h3{font-family:var(--display);font-weight:800;font-size:clamp(1.5rem,2.4vw,2rem);letter-spacing:-.025em;margin-bottom:8px}
.cat p{color:var(--muted);font-size:.95rem;max-width:34ch}
.cat .go{
  display:inline-flex;align-items:center;gap:8px;margin-top:16px;
  font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink);
}
.cat:hover .go{color:var(--glow)}

/* ── principles ───────────────────────────────────────────── */
.principles{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1px;background:var(--line)}
.principle{background:var(--abyss);padding:32px 28px 36px}
.principle .k{
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--surf);
  display:block;margin-bottom:16px;
}
.principle h3{font-family:var(--display);font-weight:600;font-size:1.18rem;letter-spacing:-.02em;margin-bottom:10px}
.principle p{color:var(--muted);font-size:.93rem}

/* ── credentials strip ────────────────────────────────────── */
.creds{
  border:1px solid var(--line);border-radius:20px;padding:38px clamp(24px,4vw,44px);
  background:linear-gradient(150deg,rgba(10,78,134,.22),rgba(3,18,31,0) 62%);
}
.creds h3{font-family:var(--display);font-weight:800;font-size:clamp(1.4rem,2.4vw,1.9rem);letter-spacing:-.025em;margin-bottom:14px;max-width:22ch}
.creds p{color:var(--muted);max-width:62ch}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.pill{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;
  border:1px solid var(--line);border-radius:999px;padding:8px 15px;color:var(--ink);
  background:rgba(3,18,31,.5);
}
.pill.on{border-color:rgba(34,211,238,.5);color:var(--glow)}
.underwriters{margin-top:22px;color:var(--muted);font-size:.9rem}
.underwriters b{color:var(--ink);font-weight:500}

/* ── app promo ────────────────────────────────────────────── */
.app-promo .shell{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
@media(max-width:900px){.app-promo .shell{grid-template-columns:1fr;gap:40px;text-align:center}
  .app-promo .cta-row{justify-content:center}}
.app-shot{justify-self:center;position:relative}
.app-shot img{width:min(300px,72vw);border-radius:24px;box-shadow:0 44px 80px -30px rgba(0,0,0,.95),0 0 0 1px rgba(143,175,198,.14)}
.app-shot::before{
  content:"";position:absolute;inset:-12% -18%;z-index:-1;border-radius:50%;
  background:radial-gradient(circle,rgba(15,111,187,.4),transparent 68%);filter:blur(46px);
}

/* the landing page's h1 em is a small kicker under a 3-line headline; here it
   is the second half of a 2-line statement and wants full display size */
.hero-site h1 em{font-size:1em;margin-top:0;letter-spacing:-.035em}

/* ── page head (interior pages) ───────────────────────────── */
.page-head{position:relative;padding:150px 0 44px}
.page-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(900px 520px at 12% 0%,rgba(63,169,245,.2),transparent 70%),
    radial-gradient(700px 440px at 88% 8%,rgba(34,211,238,.13),transparent 70%);
}
.page-head .shell{position:relative;z-index:2}
.page-head h1{font-size:clamp(2.4rem,5.2vw,4.2rem);max-width:16ch}
.page-head h1 em{font-size:1em;margin-top:0;letter-spacing:-.035em}
.page-head .lede{max-width:58ch;margin-bottom:0}

/* ── filters ──────────────────────────────────────────────── */
.filters{
  display:flex;flex-wrap:wrap;gap:14px 22px;align-items:center;
  padding:22px 0;border-block:1px solid var(--line);
}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;
  color:var(--muted);background:transparent;cursor:pointer;
  border:1px solid var(--line);border-radius:999px;padding:8px 15px;
  transition:color .2s,border-color .2s,background .2s;
}
.chip:hover{color:var(--ink);border-color:rgba(143,175,198,.4)}
.chip[aria-pressed="true"]{
  color:var(--abyss);background:var(--glow);border-color:var(--glow);font-weight:500;
}
.search{
  display:flex;align-items:center;gap:9px;margin-inline-start:auto;
  border:1px solid var(--line);border-radius:999px;padding:8px 16px;
  transition:border-color .2s;
}
.search:focus-within{border-color:var(--glow)}
.search svg{width:16px;height:16px;color:var(--muted);flex:none}
.search input{
  background:none;border:0;outline:0;color:var(--ink);font-family:var(--body);
  font-size:.92rem;width:min(220px,42vw);
}
.search input::placeholder{color:var(--muted)}
.result-count{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);padding-top:18px;
}
.empty{color:var(--muted);padding:60px 0;text-align:center}
.linkish{background:none;border:0;color:var(--glow);cursor:pointer;font:inherit;text-decoration:underline}

/* ── course grid ──────────────────────────────────────────── */
.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(272px,1fr));gap:20px}
.course{
  display:flex;flex-direction:column;text-decoration:none;color:var(--ink);
  background:var(--deep);border:1px solid var(--line);border-radius:18px;overflow:hidden;
  transition:transform .25s cubic-bezier(.2,.8,.3,1),border-color .25s,box-shadow .25s;
}
.course:hover{
  transform:translateY(-4px);border-color:rgba(34,211,238,.4);
  box-shadow:0 26px 46px -24px rgba(0,0,0,.9);
}
.course-img{position:relative;aspect-ratio:3/2;overflow:hidden;background:#08202f}
.course-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.8,.3,1)}
.course:hover .course-img img{transform:scale(1.05)}
.course-img::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(6,37,55,.9),transparent 58%);
}
.tag{
  position:absolute;top:12px;inset-inline-start:12px;z-index:2;
  font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;
  background:rgba(3,18,31,.8);border:1px solid var(--line);border-radius:999px;
  padding:5px 11px;color:var(--ink);backdrop-filter:blur(6px);
}
.course-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.course-body h3{
  font-family:var(--display);font-weight:600;font-size:1.14rem;letter-spacing:-.02em;
  line-height:1.2;margin-bottom:8px;
}
.course-quote{color:var(--muted);font-size:.88rem;line-height:1.5;margin-bottom:16px}
.specs{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto}
.spec{
  border:1px solid var(--line);border-radius:8px;padding:6px 10px;
  display:flex;flex-direction:column;gap:2px;
}
.spec dt{
  font-family:var(--mono);font-size:9px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);
}
.spec dd{font-size:.82rem;color:var(--ink);font-weight:500}
@media(max-width:560px){
  .search{margin-inline-start:0;width:100%}
  .search input{width:100%}
  .page-head{padding-top:120px}
}
/* three specs, one row, no ragged wrap */
.specs{display:grid;grid-template-columns:repeat(3,1fr);gap:7px}

/* ── course detail ────────────────────────────────────────── */
.course-hero{position:relative;overflow:hidden;padding:150px 0 44px;min-height:min(62vh,520px);display:grid;align-items:end}
.course-hero>img{position:absolute;inset:0;z-index:0;opacity:.78;object-position:50% 40%}
.course-hero::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    linear-gradient(to top,var(--abyss) 4%,rgba(3,18,31,.55) 46%,rgba(3,18,31,.28) 100%),
    linear-gradient(to bottom,rgba(3,18,31,.7),rgba(3,18,31,0) 30%);
}
.course-hero .shell{position:relative;z-index:2}
.crumbs{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--muted);margin-bottom:20px}
.crumbs a{color:var(--muted);text-decoration:none;transition:color .2s}
.crumbs a:hover{color:var(--glow)}
.crumbs span{margin:0 8px;opacity:.5}
.course-hero .tag{position:static;display:inline-block;margin-bottom:16px}
.course-hero h1{font-size:clamp(2.3rem,5.4vw,4rem);letter-spacing:-.035em;line-height:1;max-width:18ch}
.course-hero-quote{color:var(--ink);opacity:.9;font-size:clamp(1.05rem,1.7vw,1.35rem);max-width:52ch;margin-top:18px;text-shadow:0 1px 20px rgba(2,10,18,.8)}

.dspecs{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden;margin-top:-30px;position:relative;z-index:5;
}
.dspec{background:var(--deep);padding:20px 22px;display:flex;flex-direction:column;gap:6px}
.dspec dt{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.dspec dd{font-family:var(--display);font-weight:600;font-size:1.15rem;letter-spacing:-.01em;color:var(--sand)}

/* Anonymous activity block — dive/diver counts + monthly bar chart + conditions */
.activity-sec{padding:56px 0 8px}
.activity{border:1px solid var(--line);border-radius:20px;padding:34px 36px 30px;background:linear-gradient(160deg,rgba(10,78,134,.16),transparent 62%),var(--deep)}
.act-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 22px;margin-bottom:26px}
.act-head h2{font-family:var(--display);font-weight:700;font-size:clamp(1.5rem,3vw,2.1rem);letter-spacing:-.02em}
.act-head .sec-tag{flex-basis:100%}
.act-summary{color:var(--muted);font-size:1.05rem}
.act-summary b{color:var(--sand);font-family:var(--display);font-weight:600}
.act-chart{display:grid;grid-template-columns:repeat(12,1fr);gap:6px;align-items:end;height:118px;margin-top:4px}
.act-bar{display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;gap:7px}
.act-bar span{display:block;width:100%;max-width:26px;min-height:2px;border-radius:4px 4px 2px 2px;background:linear-gradient(to top,var(--mid),var(--surf));transition:filter .2s}
.act-bar:hover span{filter:brightness(1.25)}
.act-bar em{font-family:var(--mono);font-size:10px;font-style:normal;color:var(--muted);opacity:.75}
.act-cap{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:14px}
.act-conds{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.act-cond{border:1px solid var(--line);border-radius:12px;padding:14px 20px;background:rgba(3,18,31,.4);display:flex;flex-direction:column;gap:4px;min-width:120px}
.act-cond b{font-family:var(--display);font-weight:600;font-size:1.4rem;letter-spacing:-.02em;color:var(--sand)}
.act-cond span{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
@media(max-width:560px){
  .activity{padding:26px 22px 24px}
  .act-chart{gap:4px;height:96px}
  .act-bar em{font-size:9px}
}

/* Named leaderboard — "Firstname L." rows, top 3 highlighted */
.leader-sec{padding:34px 0 8px}
.leaders{border:1px solid var(--line);border-radius:20px;padding:34px 36px 28px;background:var(--deep)}
.lead-head{margin-bottom:22px}
.lead-head h2{font-family:var(--display);font-weight:700;font-size:clamp(1.4rem,2.6vw,1.9rem);letter-spacing:-.02em;margin:4px 0 8px}
.lead-head p{color:var(--muted);font-size:.98rem}
.lead-list{list-style:none;display:grid;gap:2px}
.lead-row{display:grid;grid-template-columns:28px 40px 1fr auto;align-items:center;gap:14px;padding:11px 14px;border-radius:12px;transition:background .2s}
.lead-row:hover{background:rgba(63,169,245,.06)}
.lead-top{background:linear-gradient(100deg,rgba(34,211,238,.08),transparent 70%)}
.lead-rank{font-family:var(--mono);font-size:13px;color:var(--muted);text-align:center}
.lead-top .lead-rank{color:var(--glow);font-weight:500}
.lead-av img,.lead-ini{width:40px;height:40px;border-radius:50%;object-fit:cover;display:flex;align-items:center;justify-content:center}
.lead-ini{background:linear-gradient(140deg,var(--mid),var(--brand));font-family:var(--display);font-weight:600;font-size:.9rem;color:var(--ink);border:1px solid var(--line)}
.lead-av img{border:1px solid var(--line)}
.lead-name{font-family:var(--display);font-weight:600;font-size:1.05rem;letter-spacing:-.01em;color:var(--sand)}
.lead-dives{font-family:var(--mono);font-size:.82rem;color:var(--muted);white-space:nowrap}
.lead-dives b{color:var(--surf);font-weight:500}
.lead-note{font-size:.82rem;color:var(--muted);opacity:.75;margin-top:18px;line-height:1.5}
@media(max-width:560px){
  .leaders{padding:26px 22px 22px}
  .lead-row{grid-template-columns:22px 36px 1fr auto;gap:10px;padding:10px 8px}
  .lead-av img,.lead-ini{width:36px;height:36px}
  .lead-name{font-size:.98rem}
}

/* Backend-curated photo gallery — first image featured wide, rest in a grid.
   Named pg-/photo-gal to avoid the existing horizontal-scroll .gallery component. */
.photo-gal-sec{padding:44px 0 8px}
.photo-gal{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:1fr;gap:12px}
.pg-item{position:relative;overflow:hidden;border-radius:14px;border:1px solid var(--line);aspect-ratio:4/3;margin:0}
.pg-item img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.8,.3,1)}
.pg-item:hover img{transform:scale(1.05)}
.pg-lead{grid-column:span 2;grid-row:span 2;aspect-ratio:auto}
.pg-item figcaption{position:absolute;left:0;right:0;bottom:0;padding:18px 14px 10px;font-family:var(--mono);font-size:10px;letter-spacing:.06em;color:var(--ink);background:linear-gradient(to top,rgba(2,12,21,.85),transparent);opacity:0;transition:opacity .25s}
.pg-item:hover figcaption{opacity:1}
@media(max-width:700px){
  .photo-gal{grid-template-columns:repeat(2,1fr);gap:8px}
  .pg-lead{grid-column:span 2;grid-row:auto}
}

.course-detail{padding:64px 0 20px}
.detail-grid{display:grid;grid-template-columns:1.55fr .9fr;gap:56px;align-items:start}
.detail-body p{color:var(--ink);opacity:.9;font-size:1.06rem;line-height:1.7;margin-bottom:18px;max-width:62ch}
.detail-body ul{list-style:none;margin:0 0 20px;display:grid;gap:10px;max-width:60ch}
.detail-body li{color:var(--muted);padding-left:22px;position:relative;line-height:1.55}
.detail-body li::before{content:"";position:absolute;left:0;top:.55em;width:8px;height:8px;border-radius:50%;border:1.5px solid var(--surf)}
.outcome{margin-top:32px;padding:22px 26px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(140deg,rgba(10,78,134,.2),transparent 66%)}
.outcome p{font-family:var(--display);font-weight:600;font-size:1.2rem;letter-spacing:-.02em;color:var(--sand);opacity:1;margin:8px 0 0}

.detail-side{display:flex;flex-direction:column;gap:22px;position:sticky;top:96px}
.side-card{border:1px solid var(--line);border-radius:18px;padding:26px;background:var(--deep)}
.side-card h3{font-family:var(--display);font-weight:700;font-size:1.3rem;letter-spacing:-.02em;margin-bottom:10px}
.side-card p{color:var(--muted);font-size:.94rem;margin-bottom:18px}
.side-card .btn{width:100%;justify-content:center;margin-bottom:10px}
.side-card .btn:last-child{margin-bottom:0}
.side-block{border-top:1px solid var(--line);padding-top:20px}
.side-block .sec-tag{margin-bottom:12px}
.side-block p{color:var(--muted);font-size:.92rem;line-height:1.6;margin-bottom:10px}
.side-block ul{list-style:none;display:grid;gap:8px}
.side-block li{color:var(--muted);font-size:.9rem;padding-left:18px;position:relative;line-height:1.5}
.side-block li::before{content:"";position:absolute;left:0;top:.5em;width:6px;height:6px;border-radius:50%;border:1.5px solid var(--surf)}

.related{padding:40px 0 90px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:22px}
.related-card{position:relative;overflow:hidden;border-radius:14px;aspect-ratio:3/2;display:flex;align-items:flex-end;text-decoration:none;border:1px solid var(--line)}
.related-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-1;transition:transform .5s cubic-bezier(.2,.8,.3,1)}
.related-card::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(2,12,21,.92),transparent 62%)}
.related-card:hover img{transform:scale(1.06)}
.related-card span{position:relative;z-index:1;padding:16px 18px;font-family:var(--display);font-weight:600;font-size:1.05rem;color:var(--ink);letter-spacing:-.01em}

@media(max-width:860px){
  .detail-grid{grid-template-columns:1fr;gap:36px}
  .detail-side{position:static}
}

/* prereqs/medical live in the main column now; sidebar holds the CTA + a spec recap */
.detail-block{margin-top:34px;padding-top:30px;border-top:1px solid var(--line)}
.detail-block h2{font-family:var(--display);font-weight:700;font-size:1.4rem;letter-spacing:-.02em;margin-bottom:16px}
.detail-block p{color:var(--muted);font-size:1rem;line-height:1.7;margin-bottom:14px;max-width:62ch}
.detail-block ul{list-style:none;display:grid;gap:10px;max-width:60ch}
.detail-block li{color:var(--muted);padding-left:22px;position:relative;line-height:1.55}
.detail-block li::before{content:"";position:absolute;left:0;top:.55em;width:8px;height:8px;border-radius:50%;border:1.5px solid var(--surf)}
.side-specs{display:grid;gap:1px;margin-top:22px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.side-specs .dspec{padding:14px 18px}
.side-specs .dspec dd{font-size:1rem}

/* ── about: story prose ───────────────────────────────────── */
.prose{max-width:64ch}
.prose p{color:var(--ink);opacity:.9;font-size:clamp(1.05rem,1.5vw,1.22rem);line-height:1.7;margin-bottom:22px}
.prose p:first-child{color:var(--sand);opacity:1;font-size:clamp(1.15rem,1.8vw,1.4rem)}

/* ── about: founder cards ─────────────────────────────────── */
.founders{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:820px){.founders{grid-template-columns:1fr}}
.founder{
  border:1px solid var(--line);border-radius:18px;padding:30px 28px;
  background:linear-gradient(160deg,var(--deep),var(--abyss));position:relative;overflow:hidden;
}
.founder::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(to right,var(--surf),var(--glow));opacity:.7;
}
.f-since{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--glow);display:block;margin-bottom:14px}
.founder h3{font-family:var(--display);font-weight:800;font-size:1.5rem;letter-spacing:-.025em;margin-bottom:18px}
.founder ul{list-style:none;display:grid;gap:11px}
.founder li{color:var(--muted);font-size:.94rem;line-height:1.5;padding-left:20px;position:relative}
.founder li::before{content:"";position:absolute;left:0;top:.5em;width:7px;height:7px;border-radius:50%;border:1.5px solid var(--surf)}

/* ── instructors: benefits checklist ──────────────────────── */
.benefits{list-style:none;display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}
@media(max-width:680px){.benefits{grid-template-columns:1fr}}
.benefits li{background:var(--abyss);padding:20px 24px;display:flex;align-items:center;gap:14px;color:var(--ink);font-size:.98rem}
.benefits li::before{
  content:"";flex:none;width:22px;height:22px;border-radius:50%;
  background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.5);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2322D3EE' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:center;background-size:13px;
}

/* ── instructors: pricing highlight ───────────────────────── */
.pricing{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  border:1px solid rgba(34,211,238,.4);border-radius:20px;padding:32px clamp(24px,4vw,40px);
  background:linear-gradient(140deg,rgba(15,111,187,.28),rgba(3,18,31,0) 66%);margin-top:44px;
}
.price{font-family:var(--display);font-weight:800;letter-spacing:-.03em;line-height:1;display:flex;align-items:baseline;gap:10px}
.price b{font-size:clamp(2.6rem,6vw,3.6rem);color:var(--sand)}
.price span{font-family:var(--mono);font-size:14px;letter-spacing:.1em;color:var(--muted)}
.price-note{color:var(--muted);margin-top:12px;max-width:46ch;font-size:.96rem}

/* ── instructors: steps ───────────────────────────────────── */
.steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden;counter-reset:step}
@media(max-width:820px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.steps{grid-template-columns:1fr}}
.steps li{background:var(--abyss);padding:30px 26px 34px;position:relative}
.step-n{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--surf);display:block;margin-bottom:20px}
.steps h3{font-family:var(--display);font-weight:600;font-size:1.2rem;letter-spacing:-.02em;margin-bottom:10px}
.steps p{color:var(--muted);font-size:.92rem;line-height:1.5}

/* ── instructors: cross-over form ─────────────────────────── */
.crossover{background:linear-gradient(to bottom,var(--abyss),var(--deep))}
.form-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}
@media(max-width:880px){.form-grid{grid-template-columns:1fr;gap:36px}}
.lead-form{
  display:grid;gap:16px;border:1px solid var(--line);border-radius:20px;
  padding:clamp(24px,3.5vw,36px);background:var(--abyss);
}
.lead-form label{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.lead-form label span{color:var(--surf)}
.lead-form input,.lead-form textarea{
  display:block;width:100%;margin-top:8px;
  font-family:var(--body);font-size:1rem;color:var(--ink);text-transform:none;letter-spacing:normal;
  background:var(--deep);border:1px solid var(--line);border-radius:10px;padding:12px 14px;transition:border-color .2s;
}
.lead-form input:focus,.lead-form textarea:focus{outline:0;border-color:var(--glow)}
.lead-form textarea{resize:vertical;min-height:80px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:520px){.field-row{grid-template-columns:1fr}}
.checkline{display:flex;flex-direction:row;align-items:center;gap:9px;text-transform:none;letter-spacing:.02em;font-size:12px;color:var(--muted);align-items:end;padding-bottom:12px}
.checkline input{width:auto;margin-top:0;padding:0}
.lead-form .btn{margin-top:6px;justify-content:center}
.form-note{color:var(--glow);font-size:.9rem;text-transform:none;letter-spacing:normal;font-family:var(--body)}

/* ── course sections (tier + discipline) ──────────────────── */
.course-section{padding:0}
.course-section[hidden]{display:none}
.course-section+.course-section{margin-top:56px}
.section-head{
  display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;
  padding-bottom:18px;margin-bottom:26px;border-bottom:1px solid var(--line);
}
.section-head h2{font-family:var(--display);font-weight:800;font-size:clamp(1.5rem,2.8vw,2.1rem);letter-spacing:-.025em}
.section-sub{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}

/* ── contact ──────────────────────────────────────────────── */
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start}
@media(max-width:880px){.contact-grid{grid-template-columns:1fr;gap:40px}}
.contact-ways{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden}
.way{background:var(--abyss);padding:24px 26px}
.way .sec-tag{margin-bottom:10px}
.way-link{
  font-family:var(--display);font-weight:600;font-size:1.2rem;letter-spacing:-.02em;
  color:var(--ink);text-decoration:none;display:inline-block;transition:color .2s;
}
.way-link:hover{color:var(--glow)}
.way p{color:var(--muted);font-size:.9rem;margin-top:6px;line-height:1.5}

/* select reuses the lead-form input look */
.lead-form select{
  display:block;width:100%;margin-top:8px;
  font-family:var(--body);font-size:1rem;color:var(--ink);text-transform:none;letter-spacing:normal;
  background:var(--deep);border:1px solid var(--line);border-radius:10px;padding:12px 14px;transition:border-color .2s;
  -webkit-appearance:none;appearance:none;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238FAFC6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:18px;padding-right:42px;
}
.lead-form select:focus{outline:0;border-color:var(--glow)}
.lead-form select option{background:var(--deep);color:var(--ink)}

/* ── homepage three pillars ───────────────────────────────── */
#pillars{padding-top:56px}
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:900px){.pillars{grid-template-columns:1fr}}
.pillar{
  position:relative;overflow:hidden;border-radius:22px;min-height:420px;
  display:flex;align-items:flex-end;text-decoration:none;color:var(--ink);isolation:isolate;
  box-shadow:0 0 0 1px rgba(143,175,198,.14);
}
.pillar>img{position:absolute;inset:0;z-index:-2;transition:transform .7s cubic-bezier(.2,.8,.3,1)}
.pillar::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(to top,rgba(2,12,21,.95) 10%,rgba(3,18,31,.55) 52%,rgba(3,18,31,.25) 100%);
}
.pillar:hover>img{transform:scale(1.06)}
.pillar-body{padding:32px 30px 34px}
.pillar-k{
  font-family:var(--mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--glow);display:block;margin-bottom:12px;
}
.pillar h2{font-family:var(--display);font-weight:800;font-size:clamp(1.6rem,2.6vw,2.1rem);letter-spacing:-.03em;margin-bottom:10px}
.pillar p{color:var(--muted);font-size:.96rem;line-height:1.55;max-width:36ch}
.pillar .go{
  display:inline-flex;align-items:center;gap:8px;margin-top:18px;
  font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink);
}
.pillar:hover .go{color:var(--glow)}

/* ── connect: leaderboard ─────────────────────────────────── */
.board-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
@media(max-width:820px){.board-grid{grid-template-columns:1fr;gap:36px}}
.board{border:1px solid var(--line);border-radius:20px;overflow:hidden;background:var(--deep)}
.board-head{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  padding:20px 24px;border-bottom:1px solid var(--line);flex-wrap:wrap;
}
.board-head .sec-tag{margin:0}
.board-window{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.board-list{list-style:none;margin:0;padding:8px 0}
.board-list li{display:flex;align-items:center;gap:16px;padding:12px 24px;transition:background .2s}
.board-list li:hover{background:rgba(34,211,238,.05)}
.board-list .rank{
  font-family:var(--mono);font-size:13px;width:24px;flex:none;text-align:center;color:var(--muted);
}
.board-list li:nth-child(1) .rank{color:var(--glow);font-weight:600}
.board-list .who{flex:1;font-weight:500;color:var(--ink)}
.board-list .score{font-family:var(--display);font-weight:700;font-size:1.15rem;color:var(--sand)}
.board-foot{padding:14px 24px;border-top:1px solid var(--line);color:var(--muted);font-size:.85rem;font-family:var(--mono);letter-spacing:.02em}

/* ── dive-site pages ──────────────────────────────────────── */
.site-hero{position:relative;overflow:hidden;padding:150px 0 44px;min-height:min(64vh,540px);display:grid;align-items:end}
.site-hero-blank{min-height:auto;padding-top:132px}
.site-hero>video,.site-hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;opacity:.82}
.site-hero-blank{background:radial-gradient(1000px 600px at 30% 10%,rgba(15,111,187,.35),transparent 70%),var(--abyss)}
.site-hero::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(to top,var(--abyss) 5%,rgba(3,18,31,.5) 48%,rgba(3,18,31,.25) 100%),
    linear-gradient(to bottom,rgba(3,18,31,.7),rgba(3,18,31,0) 30%);
}
.site-hero .shell{position:relative;z-index:2}
.site-hero .tag{position:static;display:inline-block;margin-bottom:14px;text-transform:capitalize}
.site-hero h1{font-size:clamp(2.2rem,5vw,3.8rem);letter-spacing:-.035em;line-height:1;max-width:20ch}
.site-place{color:var(--ink);opacity:.85;font-size:clamp(1rem,1.6vw,1.25rem);margin-top:14px;text-shadow:0 1px 18px rgba(2,10,18,.8)}

.species-grid{display:flex;flex-wrap:wrap;gap:10px}
.species-chip{
  display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:999px;
  padding:6px 16px 6px 6px;background:var(--deep);
}
.species-chip img{width:36px;height:36px;border-radius:50%;object-fit:cover;flex:none}
.species-ph{width:36px;height:36px;border-radius:50%;background:rgba(34,211,238,.14);border:1px solid rgba(34,211,238,.4);flex:none}
.species-chip span{font-size:.92rem;color:var(--ink)}

/* dive-site index */
.site-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.site-card{
  display:block;text-decoration:none;border:1px solid var(--line);border-radius:14px;padding:20px 22px;
  background:var(--deep);transition:transform .2s cubic-bezier(.2,.8,.3,1),border-color .2s;
}
.site-card:hover{transform:translateY(-3px);border-color:rgba(34,211,238,.4)}
.site-card h3{font-family:var(--display);font-weight:600;font-size:1.1rem;letter-spacing:-.02em;color:var(--ink);margin-bottom:6px}
.site-card p{color:var(--muted);font-size:.86rem}
.country-row{display:flex;flex-wrap:wrap;gap:10px}
.country-row .chip b{color:var(--surf);margin-left:6px;font-weight:600}
.country-row .chip[aria-pressed="true"]{color:var(--abyss);background:var(--glow);border-color:var(--glow)}
.country-row .chip[aria-pressed="true"] b{color:var(--abyss)}

/* dive-site hero satellite attribution (Mapbox TOS) */
.hero-attr{position:absolute;bottom:10px;inset-inline-end:14px;z-index:3;font-family:var(--mono);font-size:9px;letter-spacing:.04em;color:rgba(234,244,251,.72);background:rgba(3,18,31,.5);padding:3px 8px;border-radius:6px}