:root{
  --bg:#EEF6F4; --bg-2:#E1EFEB; --panel:#0A2E3A; --panel-2:#0E3A48;
  --ink:#06202A; --ink-2:#2E5561; --ink-3:#5E7F88;
  --on-panel:#EAF5F2; --on-panel-2:#9FC2C4;
  --line:#C6DCD8; --line-strong:#9FBFBB;
  --signal:#F5B92E; --signal-ink:#1A1400; --aqua:#1E9C8C; --aqua-soft:#CFEDE7;
  --mid:#3F8FB8; --mid-soft:#D3E7F2; --pend:#8E9AA0;
  --warn-bg:#FFF4D6; --warn-ink:#5A4300;
  --hero-top:#0E5468; --hero-bot:#041A22; --veil-a:89%;
  --shadow:0 18px 40px -22px rgba(6,32,42,.45);
  --display:"Bricolage Grotesque",ui-sans-serif,system-ui,"Segoe UI",sans-serif;
  --body:"Newsreader",Georgia,"Times New Roman",serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#041A22; --bg-2:#082430; --panel:#0B2F3C; --panel-2:#113C4B;
    --ink:#EAF5F2; --ink-2:#B3CFD0; --ink-3:#7FA3A7;
    --on-panel:#EAF5F2; --on-panel-2:#9FC2C4;
    --line:#173F4C; --line-strong:#255A69;
    --signal:#F5B92E; --signal-ink:#1A1400; --aqua:#3FC9B7; --aqua-soft:#0F3D42;
    --mid:#5FB0DA; --mid-soft:#0F3448; --pend:#5E7F88;
    --warn-bg:#3A2D08; --warn-ink:#FFE39A;
    --hero-top:#0B4557; --hero-bot:#02141A; --veil-a:80%;
    --shadow:0 18px 40px -22px rgba(0,0,0,.7);
  }
}
:root[data-theme="dark"]{
  --bg:#041A22; --bg-2:#082430; --panel:#0B2F3C; --panel-2:#113C4B;
  --ink:#EAF5F2; --ink-2:#B3CFD0; --ink-3:#7FA3A7;
  --on-panel:#EAF5F2; --on-panel-2:#9FC2C4;
  --line:#173F4C; --line-strong:#255A69;
  --signal:#F5B92E; --signal-ink:#1A1400; --aqua:#3FC9B7; --aqua-soft:#0F3D42;
  --mid:#5FB0DA; --mid-soft:#0F3448; --pend:#5E7F88;
  --warn-bg:#3A2D08; --warn-ink:#FFE39A;
  --hero-top:#0B4557; --hero-bot:#02141A; --veil-a:80%;
  --shadow:0 18px 40px -22px rgba(0,0,0,.7);
}
:root{--photo-surface:url("/assets/photo-surface.jpg");--photo-reef:url("/assets/photo-reef.jpg")}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:18px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit}
h1,h2,h3,h4,h5{font-family:var(--display);margin:0;text-wrap:balance;letter-spacing:-.02em}
p{margin:0}
.eyebrow{font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:4px}
.btn{display:inline-flex;align-items:center;gap:10px;padding:13px 20px;border-radius:999px;font-family:var(--display);font-weight:700;font-size:.95rem;text-decoration:none;border:1.5px solid transparent;cursor:pointer;transition:transform .15s ease}
.btn:hover{transform:translateY(-1px)}
.btn-signal{background:var(--signal);color:var(--signal-ink)}
.btn-ghost{border-color:var(--line-strong);color:var(--ink)}
.btn-light{border-color:rgba(234,245,242,.45);color:var(--on-panel)}

.deepbg{position:fixed;inset:0;z-index:-1;pointer-events:none}
.deepbg i{position:absolute;inset:0;display:block;background-size:cover;background-repeat:no-repeat}
.deepbg .l0{background-image:var(--photo-surface);background-position:50% 0%;filter:saturate(1.15) brightness(1.06)}
.deepbg .l1{background-image:var(--photo-reef);background-position:52% 48%;filter:saturate(1.25);opacity:0}
.deepbg .l2{background-image:var(--photo-surface);background-position:50% 100%;filter:saturate(.72) brightness(.5);opacity:0}
.deepbg .veil{position:absolute;inset:0;background:color-mix(in srgb,var(--bg) var(--veil-a,86%),transparent)}


.nav{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 84%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:28px;height:66px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-family:var(--display);font-weight:800;font-size:1.2rem}
.brand .mark{width:58px;height:40px;border-radius:10px;background:radial-gradient(circle at 35% 30%,var(--aqua),var(--panel) 72%);box-shadow:inset 0 0 0 1.5px var(--signal);display:grid;place-items:center;overflow:hidden;flex:none}
.brand .mark img{width:46px;height:auto;display:block}
.brand small{font-family:var(--mono);font-weight:500;font-size:.62rem;letter-spacing:.12em;color:var(--ink-3);display:block;margin-top:1px}
.padi-badge{display:block;flex:none;aspect-ratio:33/40;border-radius:5px;background:url("/assets/padi-5star.jpg") center/contain no-repeat}
.nav-cred{height:44px}
@media (max-width:820px){.nav-cred{display:none}}
.foot-lockup{display:flex;align-items:center;gap:20px}
.foot-lockup .mark{flex:none}
.foot-lockup .padi-badge{height:96px}
.nav-links{display:flex;gap:26px;margin-left:auto;font-family:var(--display);font-weight:500;font-size:.95rem}
.nav-links a{text-decoration:none;color:var(--ink-2);padding-bottom:2px;border-bottom:2px solid transparent}
.nav-links a:hover{color:var(--ink)}
.nav-links a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--signal)}
.nav .btn{padding:10px 18px;font-size:.9rem}
@media (max-width:900px){.nav-links{gap:16px;font-size:.88rem}}
@media (max-width:720px){.nav-links a.nav-opt{display:none}}
@media (max-width:560px){.nav-links a.nav-alt{display:none}.nav-links{gap:12px}.brand span span{display:none}.brand .mark{width:48px;height:34px}.brand .mark img{width:38px}}
.view[hidden]{display:none!important}

.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,var(--hero-top),var(--hero-bot));color:var(--on-panel)}
.hero-photo{position:absolute;inset:0;z-index:0;background-image:var(--photo-surface);background-size:cover;background-position:50% 0%;opacity:.28;mix-blend-mode:screen}
.hero-scrim{position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(180deg,rgba(4,26,34,0) 0%,rgba(4,26,34,.35) 55%,var(--hero-bot) 100%)}
.hero .wrap{position:relative;z-index:2;padding:72px 28px 56px}
.hero .eyebrow{color:var(--aqua);display:flex;align-items:center;gap:12px}
.hero .eyebrow::before{content:"";width:28px;height:1px;background:var(--aqua)}
.hero h1{font-size:clamp(2.4rem,5.4vw,4.4rem);line-height:1;font-weight:800;margin:18px 0 20px;letter-spacing:-.035em;max-width:14em}
.hero h1 em{font-style:normal;color:var(--signal)}
.hero .lede{max-width:42rem;font-size:1.15rem;color:var(--on-panel-2)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);margin-top:40px;border:1px solid rgba(159,194,196,.25);border-radius:14px;overflow:hidden;background:rgba(4,26,34,.45)}
.stat{padding:18px 22px;border-right:1px solid rgba(159,194,196,.25)}
.stat:last-child{border-right:0}
.stat .k{font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--on-panel-2)}
.stat .v{font-family:var(--mono);font-size:1.5rem;font-weight:500;margin-top:8px;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
@media (max-width:700px){.stats{grid-template-columns:repeat(2,1fr)}.stat:nth-child(2){border-right:0}.stat:nth-child(-n+2){border-bottom:1px solid rgba(159,194,196,.25)}}

section.stop{padding:80px 0}
section.stop+section.stop{border-top:1px solid var(--line)}
.stop-head{display:grid;grid-template-columns:auto 1fr;gap:20px 40px;align-items:baseline;margin-bottom:36px}
.stop-head .depth{font-family:var(--mono);font-size:.78rem;color:var(--ink-3);padding-top:6px}
.stop-head .depth b{display:block;font-weight:500;font-size:1.55rem;color:var(--ink);letter-spacing:-.02em;line-height:1}
.stop-head h2{font-size:clamp(1.8rem,3.4vw,2.7rem);font-weight:700;line-height:1.05}
.stop-head .sub{max-width:42rem;margin-top:12px;font-size:1.1rem;color:var(--ink-2)}
@media (max-width:640px){.stop-head{grid-template-columns:1fr;gap:10px}section.stop{padding:56px 0}}

/* ---------- depth rail ---------- */
.rail{position:fixed;left:0;top:66px;bottom:0;width:72px;display:none;flex-direction:column;z-index:15;pointer-events:none}
@media (min-width:960px){.rail{display:flex}}
.rail .scale{position:absolute;left:34px;top:24px;bottom:24px;width:1px;background:var(--line-strong)}
.rail .tick{position:absolute;left:24px;display:flex;align-items:center;gap:8px;transform:translateY(-50%);font-family:var(--mono);font-size:.62rem;color:var(--ink-3)}
.rail .tick::before{content:"";width:10px;height:1px;background:var(--line-strong);margin-left:6px}
.rail .tick span{margin-left:2px}
.rail .diver{position:absolute;left:24px;top:24px;transform:translate(0,-50%);display:flex;align-items:center;gap:8px;transition:top .12s linear}
.rail .diver i{width:21px;height:21px;border-radius:50%;background:var(--signal);box-shadow:0 0 0 4px color-mix(in srgb,var(--signal) 28%,transparent)}
.rail .diver b{font-family:var(--mono);font-weight:500;font-size:.72rem;color:var(--ink);background:var(--bg);padding:2px 6px;border-radius:4px;border:1px solid var(--line)}

/* ---------- briefing board ---------- */
.board{background:var(--panel);color:var(--on-panel);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.board .top{display:flex;flex-wrap:wrap;align-items:center;gap:14px 24px;padding:16px 24px;border-bottom:1px solid var(--panel-2);font-family:var(--mono);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--on-panel-2)}
.board .top .live{display:inline-flex;align-items:center;gap:8px;color:var(--on-panel)}
.board .top .live::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--aqua);box-shadow:0 0 0 4px color-mix(in srgb,var(--aqua) 25%,transparent)}
.board .top .stamp{font-family:var(--mono);letter-spacing:.06em;text-transform:none;color:var(--on-panel-2)}
.board .top .pending{margin-left:auto;color:var(--signal)}
.gauges{display:grid;grid-template-columns:repeat(5,1fr)}
.gauge{padding:22px 24px;border-right:1px solid var(--panel-2);border-bottom:1px solid var(--panel-2)}
.gauge:nth-child(5n){border-right:0}
.gauge:nth-child(n+6){border-bottom:0}
.gauge .k{font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--on-panel-2)}
.gauge .v{font-family:var(--mono);font-size:1.7rem;font-weight:500;margin-top:10px;letter-spacing:-.02em;line-height:1;color:var(--on-panel)}
.gauge .v small{font-size:.85rem;color:var(--on-panel-2);margin-left:3px}
.gauge .note{font-size:.9rem;color:var(--on-panel-2);margin-top:8px}
.gauge.sun .v{font-size:1.25rem}
.gauge.flag .v{color:var(--aqua)}
.board .foot{padding:14px 24px;font-size:.95rem;color:var(--on-panel-2);border-top:1px solid var(--panel-2);font-style:italic}
@media (max-width:960px){.gauges{grid-template-columns:repeat(3,1fr)}.gauge:nth-child(5n){border-right:1px solid var(--panel-2)}.gauge:nth-child(3n){border-right:0}.gauge:nth-child(n+6){border-bottom:1px solid var(--panel-2)}.gauge:nth-child(n+7){border-bottom:0}}
@media (max-width:560px){.gauges{grid-template-columns:repeat(2,1fr)}.gauge:nth-child(3n){border-right:1px solid var(--panel-2)}.gauge:nth-child(2n){border-right:0}.gauge:nth-child(n+7){border-bottom:1px solid var(--panel-2)}.gauge:nth-child(n+9){border-bottom:0}.gauge .v{font-size:1.4rem}}

/* ---------- why ---------- */
.why{display:grid;grid-template-columns:1fr 1fr;gap:56px}
.why h3{font-size:.78rem;font-family:var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);font-weight:500;margin-bottom:8px;letter-spacing:.14em}
.why dl{margin:0}
.why .item{display:grid;grid-template-columns:44px 1fr;gap:16px;padding:20px 0;border-top:1px solid var(--line)}
.why .item svg{width:36px;height:36px;stroke:var(--aqua);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.why dt{font-family:var(--display);font-weight:700;font-size:1.15rem}
.why dd{margin:6px 0 0;color:var(--ink-2)}
@media (max-width:820px){.why{grid-template-columns:1fr;gap:28px}}

/* ---------- courses ladder ---------- */
.ladder{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--bg-2)}
.rung{display:grid;grid-template-columns:minmax(220px,1fr) minmax(0,1.6fr) auto;gap:24px;align-items:center;padding:24px 28px;border-top:1px solid var(--line);text-decoration:none;color:inherit;transition:background .15s ease}
a.rung:hover{background:color-mix(in srgb,var(--aqua) 10%,transparent)}
a.rung:hover h3{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;text-decoration-color:var(--signal)}
.rung h3::after{content:" \2192";color:var(--aqua);opacity:0;transition:opacity .15s ease}
a.rung:hover h3::after{opacity:1}
.rung:first-child{border-top:0}
.rung h3{font-size:1.35rem;font-weight:700}
.rung .meta{font-family:var(--mono);font-size:.74rem;color:var(--ink-3);margin-top:6px}
.rung .desc{color:var(--ink-2);font-size:1.02rem}
.rung .bar{display:flex;align-items:center;gap:12px;font-family:var(--mono);font-size:.74rem;color:var(--ink-3);min-width:210px}
.rung .bar .track{flex:1;height:8px;background:var(--line);border-radius:4px;overflow:hidden}
.rung .bar .fill{height:100%;background:linear-gradient(90deg,var(--aqua),var(--panel));border-radius:4px}
.rung .bar b{font-weight:500;color:var(--ink);min-width:3.4ch;text-align:right}
.rung.rescue .bar .fill{background:var(--signal)}
.ladder-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px 28px;margin-top:22px;color:var(--ink-2)}
.ladder-foot .btn{margin-left:auto}
@media (max-width:820px){.rung{grid-template-columns:1fr;gap:12px}.ladder-foot .btn{margin-left:0}}

/* ---------- dive sites on a depth axis ---------- */
.sitelist{border:1px solid var(--line);border-radius:16px;background:var(--bg-2);overflow:hidden}
.sl-head,.sl-row{display:grid;grid-template-columns:minmax(0,1fr) 190px 78px 104px;gap:20px;align-items:center;padding:12px 22px}
.sl-head{border-bottom:1px solid var(--line-strong);background:var(--bg);font-family:var(--mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);border-left:5px solid transparent}
.sl-ruler{position:relative;height:14px}
.sl-ruler i{position:absolute;top:0;font-style:normal;transform:translateX(-50%)}
.sl-ruler i:first-child{transform:none}
.sl-ruler i:last-child{transform:translateX(-100%)}
.sl-scroll{max-height:470px;overflow-y:auto;overscroll-behavior-y:contain;scrollbar-width:thin;scrollbar-color:var(--line-strong) transparent}
.sl-scroll::-webkit-scrollbar{width:8px}
.sl-scroll::-webkit-scrollbar-track{background:transparent}
.sl-scroll::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:99px}
.sl-row{border-top:1px solid var(--line);border-left:5px solid var(--lvl);text-decoration:none;color:inherit;transition:background .15s ease}
.sl-row:first-child{border-top:0}
.sl-row:hover{background:color-mix(in srgb,var(--aqua) 10%,transparent)}
.sl-row:hover h3{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;text-decoration-color:var(--signal)}
.sl-name{min-width:0}
.sl-name h3{font-size:1.12rem;font-weight:700}
.sl-name p{color:var(--ink-2);font-size:.92rem;margin-top:3px}
.sl-name p.tbc{font-style:italic;color:var(--ink-3)}
.sl-track{position:relative;height:9px;border-radius:5px;background:var(--line)}
.sl-bar{position:absolute;top:0;bottom:0;border-radius:5px;background:var(--lvl)}
.sl-none{position:absolute;left:0;right:0;top:4px;height:1px;border-top:1px dashed var(--line-strong)}
.sl-d{font-family:var(--mono);font-size:.8rem;color:var(--ink);font-variant-numeric:tabular-nums;text-align:right}
.sl-lvl span{display:inline-block;font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;padding:5px 9px;border-radius:999px;background:var(--lvl);color:var(--lvl-ink);white-space:nowrap}
.sl-foot{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;padding:12px 22px;border-top:1px solid var(--line-strong);font-family:var(--mono);font-size:.68rem;color:var(--ink-3);background:var(--bg)}
.sl-foot .keys{display:flex;flex-wrap:wrap;gap:14px}
.sl-foot .keys span::before{content:"";display:inline-block;width:12px;height:8px;border-radius:2px;margin-right:7px;vertical-align:middle;background:var(--sw)}
.sl-foot .hint{margin-left:auto}
.sites-foot{display:flex;flex-wrap:wrap;gap:16px 28px;align-items:center;margin-top:22px;color:var(--ink-2)}
.sites-foot .btn{margin-left:auto}
@media (max-width:820px){
  .sl-head{display:none}
  .sl-row{grid-template-columns:minmax(0,1fr) auto;gap:10px 14px;padding:14px 16px}
  .sl-name{grid-column:1/-1}
  .sl-track{grid-column:1/-1;order:3}
  .sl-d{text-align:left;order:4}
  .sl-lvl{order:5;text-align:right}
  .sl-foot .hint{margin-left:0;width:100%}
  .sites-foot .btn{margin-left:0}
}

/* ---------- review ---------- */
.review{display:grid;grid-template-columns:auto minmax(0,1fr);gap:48px;align-items:start;padding:52px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.review .score{font-family:var(--display);font-weight:800;font-size:5.2rem;line-height:1;letter-spacing:-.05em}
.review .stars{color:var(--signal);font-size:1.3rem;letter-spacing:.1em;margin-top:4px}
.review .from{font-family:var(--mono);font-size:.74rem;color:var(--ink-3);margin-top:8px}
.review .gmore{display:inline-block;margin-top:16px;font-family:var(--display);font-weight:700;font-size:.92rem;text-decoration:none;border-bottom:2px solid var(--signal)}
.revs{min-width:0}
.revrail{display:flex;gap:18px;overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x mandatory;padding:4px 2px 16px;scrollbar-width:thin;scrollbar-color:var(--line-strong) transparent}
.revrail::-webkit-scrollbar{height:8px}
.revrail::-webkit-scrollbar-track{background:transparent}
.revrail::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:99px}
.rev{scroll-snap-align:start;flex:0 0 min(330px,76vw);display:flex;flex-direction:column;gap:12px;padding:22px 24px;border:1px solid var(--line);border-radius:16px;background:var(--bg-2)}
.rev .rs{color:var(--signal);font-size:.95rem;letter-spacing:.1em;line-height:1}
.rev .rs.none{color:var(--ink-3);font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase}
.rev p{font-size:1.02rem;line-height:1.5;font-style:italic;color:var(--ink)}
.rev .by{margin-top:auto;padding-top:10px;border-top:1px dashed var(--line-strong);font-family:var(--mono);font-size:.7rem;color:var(--ink-3)}
.revrail-foot{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.revrail-foot .note{font-family:var(--mono);font-size:.68rem;color:var(--ink-3);margin-left:auto}
.revrail-nav{display:flex;gap:8px}
.revrail-nav button{width:38px;height:38px;border-radius:50%;border:1.5px solid var(--line-strong);background:transparent;color:var(--ink);font-family:var(--mono);font-size:1rem;cursor:pointer;display:grid;place-items:center;transition:background .15s ease}
.revrail-nav button:hover:not(:disabled){background:var(--bg-2)}
.revrail-nav button:disabled{opacity:.3;cursor:default}
@media (max-width:700px){.review{grid-template-columns:1fr;gap:24px}.revrail-foot .note{margin-left:0;width:100%}}

/* ---------- faq ---------- */
.faq{max-width:760px}
.faq details{border-top:1px solid var(--line)}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:20px;align-items:center;padding:20px 0;font-family:var(--display);font-weight:700;font-size:1.15rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);font-size:1.4rem;color:var(--aqua);flex:none;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .a{padding:0 0 22px;color:var(--ink-2);max-width:62ch}
.faq .help{margin-top:18px;color:var(--ink-2)}
.faq .help a{text-decoration:none;border-bottom:2px solid var(--signal);font-family:var(--display);font-weight:700;font-size:.98rem}

/* depth profile chart */
.profile{border:1px solid var(--line);border-radius:16px;background:var(--bg-2);padding:22px 24px 18px;overflow-x:auto}
.profile svg{display:block;width:100%;min-width:640px;height:auto;font-family:var(--mono)}
.profile .legend{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:14px;font-family:var(--mono);font-size:.72rem;color:var(--ink-3)}
.profile .legend span::before{content:"";display:inline-block;width:14px;height:8px;border-radius:2px;margin-right:8px;vertical-align:middle;background:var(--sw)}

.group{margin-bottom:64px}
.group[hidden]{display:none}
.deepbg{position:fixed;inset:0;z-index:-1;pointer-events:none}
.deepbg i{position:absolute;inset:0;display:block;background-size:cover;background-repeat:no-repeat}
.deepbg .l0{background-image:var(--photo-surface);background-position:50% 0%;filter:saturate(1.15) brightness(1.06)}
.deepbg .l1{background-image:var(--photo-reef);background-position:52% 48%;filter:saturate(1.25);opacity:0}
.deepbg .l2{background-image:var(--photo-surface);background-position:50% 100%;filter:saturate(.72) brightness(.5);opacity:0}
.deepbg .veil{position:absolute;inset:0;background:color-mix(in srgb,var(--bg) var(--veil-a,86%),transparent)}

.group-head{max-width:46rem;margin-bottom:26px}

.group-head .who{font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-top:8px}
.group-head h3{font-size:1.7rem;font-weight:700}
.group-head p{color:var(--ink-2);margin-top:12px}
.group-head .band{font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-top:14px}
.group-head .band b{font-weight:500;font-size:.95rem;letter-spacing:-.01em;color:var(--ink);font-variant-numeric:tabular-nums;text-transform:none}

.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media (max-width:860px){.cards{grid-template-columns:1fr}}
.card{border:1px solid var(--line);border-radius:16px;background:var(--bg-2);display:grid;grid-template-rows:auto 1fr auto;overflow:hidden;border-left:5px solid var(--lvl)}
.card[hidden]{display:none}
.card{scroll-margin-top:150px}
.card.flash{border-color:var(--signal);box-shadow:0 0 0 3px color-mix(in srgb,var(--signal) 45%,transparent)}
.card .head{padding:22px 24px 0;display:grid;grid-template-columns:1fr auto;gap:16px;align-items:start}
.card h4{font-size:1.4rem;font-weight:700}
.card .aka{font-family:var(--mono);font-size:.7rem;color:var(--ink-3);margin-top:4px}
.card .lvl{font-family:var(--mono);font-size:.64rem;letter-spacing:.12em;text-transform:uppercase;padding:5px 9px;border-radius:4px;background:var(--lvl);color:var(--lvl-ink);white-space:nowrap}
.card .depthv{font-family:var(--mono);font-size:1.5rem;font-weight:500;letter-spacing:-.02em;line-height:1;text-align:right;font-variant-numeric:tabular-nums}
.card .depthv small{display:block;font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);font-weight:400;margin-top:5px}
.card .tag{padding:8px 24px 0;font-size:1.05rem;color:var(--ink)}
.card .body{padding:14px 24px 0}
.card .body p{color:var(--ink-2);font-size:.98rem}
.card .specs{display:grid;grid-template-columns:repeat(3,1fr);gap:12px 16px;margin-top:18px;padding-top:16px;border-top:1px dashed var(--line-strong)}
.card .specs div{font-size:.92rem}
.card .specs .k{display:block;font-family:var(--mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-bottom:3px}
.card .specs .wide{grid-column:1/-1}
.card .life{margin-top:16px}
.card .life .k{font-family:var(--mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.card .life ul{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.card .life li{font-family:var(--mono);font-size:.72rem;padding:4px 9px;border-radius:999px;border:1px solid var(--line-strong);color:var(--ink-2)}
.card .warn{margin:16px 24px 0;padding:10px 14px;border-radius:8px;background:var(--warn-bg);color:var(--warn-ink);font-size:.92rem;display:flex;gap:10px}
.card .warn::before{content:"!";font-family:var(--mono);font-weight:500;flex:none;width:18px;height:18px;border-radius:50%;background:var(--signal);color:var(--signal-ink);display:inline-flex;align-items:center;justify-content:center;font-size:.7rem;margin-top:3px}
.card .foot{padding:18px 24px 22px;margin-top:6px}
.card .foot a{font-family:var(--display);font-weight:700;font-size:.95rem;text-decoration:none;border-bottom:2px solid var(--signal)}
.card.pending .body p{font-style:italic}
@media (max-width:520px){.card .specs{grid-template-columns:1fr 1fr}}

/* before you book */
.rules{display:grid;grid-template-columns:repeat(2,1fr);gap:0 48px}
.rule{padding:22px 0;border-top:1px solid var(--line)}
.rule h3{font-size:1.2rem;font-weight:700}
.rule p{color:var(--ink-2);margin-top:8px;font-size:1rem}
.rules-note{margin-top:28px;color:var(--ink-2)}
.rules-note a{text-decoration:none;border-bottom:2px solid var(--signal);font-family:var(--display);font-weight:700;font-size:.95rem}
@media (max-width:760px){.rules{grid-template-columns:1fr}}

.limits{border:1px solid var(--line);border-radius:16px;background:var(--bg-2);overflow:hidden}
.lim{display:grid;grid-template-columns:74px minmax(0,1fr) 150px;gap:20px;align-items:center;padding:13px 22px;border-top:1px solid var(--line)}
.lim:first-child{border-top:0}
.lim .m{font-family:var(--mono);font-size:1.05rem;font-weight:500;font-variant-numeric:tabular-nums}
.lim .who{color:var(--ink-2);font-size:.96rem}
.lim .track{position:relative;height:9px;border-radius:5px;background:var(--line)}
.lim .fill{position:absolute;left:0;top:0;bottom:0;border-radius:5px;background:var(--lvl)}
.limits .note{padding:14px 22px;border-top:1px solid var(--line-strong);background:var(--bg);color:var(--ink-3);font-size:.92rem}
@media (max-width:640px){.lim{grid-template-columns:64px minmax(0,1fr)}.lim .track{grid-column:1/-1}}

.filters{position:sticky;top:66px;z-index:10;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(10px);padding:14px 0;border-bottom:1px solid var(--line);margin-bottom:40px}
.filters .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.chip{display:inline-flex;align-items:center;gap:10px;padding:8px 14px;border-radius:999px;border:1.5px solid var(--line-strong);background:transparent;color:var(--ink);font-family:var(--display);font-weight:700;font-size:.9rem;cursor:pointer}
.chip b{font-family:var(--mono);font-weight:500;font-size:.72rem;color:var(--ink-3)}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.chip[aria-pressed="true"] b{color:var(--bg);opacity:.75}
.filters .count{margin-left:auto;font-family:var(--mono);font-size:.74rem;color:var(--ink-3)}
@media (max-width:640px){.filters .count{margin-left:0;width:100%}}

.group{margin-bottom:56px}
.group[hidden]{display:none}
.group-head{max-width:46rem;margin-bottom:24px}
.group-head .who{font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-top:8px}
.group-head h3{font-size:1.7rem;font-weight:700}
.group-head p{color:var(--ink-2);margin-top:12px}

.course{border:1px solid var(--line);border-left:5px solid var(--lvl);border-radius:16px;background:var(--bg-2);margin-bottom:18px;overflow:hidden;scroll-margin-top:150px}
.course.flash{border-color:var(--signal);box-shadow:0 0 0 3px color-mix(in srgb,var(--signal) 45%,transparent)}
.course .head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px 28px;padding:22px 24px 0;align-items:start}
.badges{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}
.badges span{font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;padding:4px 8px;border-radius:4px;border:1px solid var(--line-strong);color:var(--ink-2)}
.badges .pop{background:var(--signal);color:var(--signal-ink);border-color:transparent}
.course .padi{font-family:var(--mono);font-size:.68rem;color:var(--ink-3);margin-bottom:4px}
.course h4{font-size:1.45rem;font-weight:700}
.course .tagline{font-size:1.05rem;color:var(--ink);margin-top:6px}
.price{text-align:right;font-family:var(--mono)}
.price b{display:block;font-size:1.7rem;font-weight:500;letter-spacing:-.02em;line-height:1;font-variant-numeric:tabular-nums;white-space:nowrap}
.price small{display:block;font-size:.64rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);margin-top:6px}
.price .extra{display:block;font-size:.7rem;color:var(--ink-2);margin-top:6px;max-width:18rem;text-transform:none;letter-spacing:0;line-height:1.4}
.course .desc{padding:14px 24px 0;color:var(--ink-2);font-size:.98rem}
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:12px 16px;margin:18px 24px 0;padding-top:16px;border-top:1px dashed var(--line-strong)}
.facts div{font-size:.92rem}
.facts .k{display:block;font-family:var(--mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-bottom:3px}
@media (max-width:760px){.facts{grid-template-columns:1fr 1fr}.course .head{grid-template-columns:1fr}.price{text-align:left}.price .extra{max-width:none}}

.course details{margin:18px 0 0;border-top:1px solid var(--line)}
.course summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 24px;font-family:var(--display);font-weight:700;font-size:.95rem}
.course summary::-webkit-details-marker{display:none}
.course summary::after{content:"+";font-family:var(--mono);font-size:1.3rem;color:var(--aqua);transition:transform .2s}
.course details[open] summary::after{transform:rotate(45deg)}
.course .inner{padding:0 24px 22px;display:grid;grid-template-columns:1fr 1fr;gap:22px 32px}
.block h5{font-family:var(--mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);font-weight:500;margin-bottom:8px}
.block ul{list-style:none;margin:0;padding:0}
.block li{position:relative;padding-left:18px;font-size:.95rem;color:var(--ink-2);margin-bottom:5px}
.block li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--aqua)}
.block.no li::before{background:var(--pend)}
.block.wide{grid-column:1/-1}
.steps{display:grid;gap:8px}
.step{display:grid;grid-template-columns:78px minmax(0,1fr);gap:14px;font-size:.95rem;color:var(--ink-2)}
.step b{font-family:var(--mono);font-weight:500;font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink);padding-top:3px}
.opt{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 18px;padding:10px 0;border-top:1px dashed var(--line-strong);font-size:.95rem}
.opt:first-of-type{border-top:0}
.opt b{font-family:var(--mono);font-weight:500;font-variant-numeric:tabular-nums}
.opt span{color:var(--ink-3);font-size:.86rem;grid-column:1/-1}
.outcome{grid-column:1/-1;padding:14px 16px;border-radius:10px;background:var(--aqua-soft);color:var(--ink);font-size:.96rem}
@media (max-width:760px){.course .inner{grid-template-columns:1fr}}

.tiers{border:1px solid var(--line);border-radius:16px;background:var(--bg-2);overflow:hidden;margin-bottom:26px}
.tier{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.5fr) 110px;gap:20px;align-items:center;padding:13px 22px;border-top:1px solid var(--line);font-size:.96rem}
.tier:first-child{border-top:0}
.tier .lab{font-family:var(--mono);font-size:.8rem}
.tier .ex{color:var(--ink-2);font-size:.92rem}
.tier .p{font-family:var(--mono);text-align:right;font-variant-numeric:tabular-nums}
@media (max-width:760px){.tier{grid-template-columns:minmax(0,1fr) auto}.tier .ex{grid-column:1/-1}}
.speclist{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.spec{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 16px;padding:14px 18px;border:1px solid var(--line);border-radius:12px;background:var(--bg-2)}
.spec h4{font-size:1.02rem;font-weight:700}
.spec .p{font-family:var(--mono);font-size:.92rem;font-variant-numeric:tabular-nums;white-space:nowrap}
.spec .c{grid-column:1;font-family:var(--mono);font-size:.68rem;color:var(--ink-3)}
.spec .tag{grid-column:2;justify-self:end;font-family:var(--mono);font-size:.58rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2)}
@media (max-width:760px){.speclist{grid-template-columns:1fr}}

.surface{background:var(--panel);color:var(--on-panel);border-radius:22px;padding:56px 48px;display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center;box-shadow:var(--shadow);position:relative;overflow:hidden}
.surface::before{content:"";position:absolute;inset:auto -10% -60% auto;width:60%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--aqua) 35%,transparent),transparent 65%);pointer-events:none}
.surface .eyebrow{color:var(--aqua)}
.surface h2{font-size:clamp(1.8rem,3.6vw,2.8rem);font-weight:800;margin-top:12px}
.surface p{color:var(--on-panel-2);font-size:1.1rem;margin-top:12px;max-width:32rem}
.surface .cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.surface .info{display:grid;gap:14px;font-family:var(--mono);font-size:.8rem;position:relative}
.surface .info div{padding:12px 0;border-top:1px dashed rgba(159,194,196,.3)}
.surface .info .k{display:block;font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:var(--on-panel-2);margin-bottom:4px}
@media (max-width:760px){.surface{grid-template-columns:1fr;padding:40px 28px}}
footer{padding:40px 0 48px;color:var(--ink-3);font-family:var(--mono);font-size:.74rem}
footer .wrap{display:flex;flex-wrap:wrap;gap:14px 32px}
footer .wrap span:last-child{margin-left:auto}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn,.course summary::after{transition:none}}


/* ---------- index beside detail ---------- */
.browser{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);border:1px solid var(--line);border-radius:16px;background:var(--bg-2);overflow:hidden}
.bx-index{border-right:1px solid var(--line);background:var(--bg);align-self:start;position:sticky;top:80px;max-height:calc(100vh - 104px);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--line-strong) transparent}
.bx-index::-webkit-scrollbar{width:7px}
.bx-index::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:99px}
.bx-head{position:sticky;top:0;z-index:2;background:var(--bg);border-bottom:1px solid var(--line-strong);padding:10px 16px;display:flex;justify-content:space-between;gap:10px;font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.bx-sub{padding:9px 16px 7px;background:color-mix(in srgb,var(--bg-2) 60%,var(--bg));border-bottom:1px solid var(--line);border-top:1px solid var(--line);font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);display:flex;justify-content:space-between;gap:8px}
.bx-sub:first-of-type{border-top:0}
.bx-sub b{font-weight:500;color:var(--ink-2)}
.bx-item{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2px 10px;align-items:center;width:100%;text-align:left;font:inherit;color:inherit;background:none;border:0;border-bottom:1px solid var(--line);border-left:3px solid var(--lvl);padding:10px 14px;cursor:pointer;transition:background .12s ease}
.bx-item:hover{background:color-mix(in srgb,var(--aqua) 8%,transparent)}
.bx-item[aria-selected="true"]{background:color-mix(in srgb,var(--aqua) 16%,transparent)}
.bx-item[hidden]{display:none}
.bx-item .nm{font-family:var(--display);font-weight:700;font-size:.96rem;line-height:1.25}
.bx-item .mt{font-family:var(--mono);font-size:.7rem;color:var(--ink-3);font-variant-numeric:tabular-nums;white-space:nowrap}
.bx-item[aria-selected="true"] .mt{color:var(--ink-2)}
.bx-item .sm{grid-column:1/-1;font-family:var(--mono);font-size:.62rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.bx-empty{padding:18px 16px;color:var(--ink-3);font-size:.9rem}

.bx-detail{min-width:0;padding:30px 32px 32px}
.bx-pane[hidden]{display:none}
.pane-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px 28px;align-items:start;padding-bottom:18px;border-bottom:1px dashed var(--line-strong)}
.pane-head .lvl{display:inline-block;font-family:var(--mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;padding:5px 9px;border-radius:4px;background:var(--lvl);color:var(--lvl-ink);margin-bottom:10px}
.pane-head h3,.pane-head h2{font-size:1.9rem;font-weight:700;line-height:1.05}
.pane-head .aka{font-family:var(--mono);font-size:.7rem;color:var(--ink-3);margin-top:6px}
.pane-head .tag{font-size:1.08rem;color:var(--ink);margin-top:10px;max-width:38rem}
.pane-fig{text-align:right;font-family:var(--mono);white-space:nowrap}
.pane-fig b{display:block;font-size:2.1rem;font-weight:500;letter-spacing:-.02em;line-height:1;font-variant-numeric:tabular-nums}
.pane-fig small{display:block;font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-top:7px}
.pane-fig .note{display:block;font-size:.68rem;color:var(--ink-2);margin-top:8px;text-transform:none;letter-spacing:0;white-space:normal;max-width:16rem;line-height:1.4}
.pane-body{margin-top:18px;color:var(--ink-2);font-size:1rem;max-width:46rem}
.pane-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px 20px;margin-top:22px;padding-top:18px;border-top:1px dashed var(--line-strong)}
.pane-grid div{font-size:.94rem}
.pane-grid .k{display:block;font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-bottom:3px}
.pane-grid .wide{grid-column:1/-1}
.pane-sec{margin-top:22px}
.pane-sec h4{font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);font-weight:500;margin-bottom:9px}
.chips{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.chips li{font-family:var(--mono);font-size:.72rem;padding:4px 9px;border-radius:999px;border:1px solid var(--line-strong);color:var(--ink-2)}
.pane-note{margin-top:20px;padding:11px 15px;border-radius:8px;background:var(--warn-bg,#3A2D08);color:var(--warn-ink,#FFE39A);font-size:.93rem;display:flex;gap:10px}
.pane-note::before{content:"!";font-family:var(--mono);flex:none;width:18px;height:18px;border-radius:50%;background:var(--signal);color:var(--signal-ink);display:inline-flex;align-items:center;justify-content:center;font-size:.7rem;margin-top:2px}
.pane-foot{margin-top:26px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.pane-foot .hint{font-family:var(--mono);font-size:.68rem;color:var(--ink-3);margin-left:auto}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:22px 32px;margin-top:22px}
.cols .wide{grid-column:1/-1}
.cols ul{list-style:none;margin:0;padding:0}
.cols li{position:relative;padding-left:18px;font-size:.95rem;color:var(--ink-2);margin-bottom:5px}
.cols li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--aqua)}
.cols .no li::before{background:var(--pend)}
.steps{display:grid;gap:8px}
.step{display:grid;grid-template-columns:78px minmax(0,1fr);gap:14px;font-size:.95rem;color:var(--ink-2)}
.step b{font-family:var(--mono);font-weight:500;font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink);padding-top:3px}
.payopt{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:3px 18px;padding:10px 0;border-top:1px dashed var(--line-strong);font-size:.95rem}
.payopt:first-of-type{border-top:0}
.payopt b{font-family:var(--mono);font-weight:500;font-variant-numeric:tabular-nums}
.payopt span{grid-column:1/-1;color:var(--ink-3);font-size:.85rem}
.outcome{margin-top:22px;padding:14px 16px;border-radius:10px;background:var(--aqua-soft);color:var(--ink);font-size:.96rem}
@media (max-width:960px){
  .browser{grid-template-columns:1fr}
  .bx-index{position:static;max-height:302px;border-right:0;border-bottom:1px solid var(--line-strong)}
  .bx-detail{padding:24px 20px 26px}
  .pane-head{grid-template-columns:1fr}
  .pane-fig{text-align:left}
  .pane-fig .note{max-width:none}
  .pane-grid{grid-template-columns:1fr 1fr}
  .cols{grid-template-columns:1fr}
}
@media (max-width:520px){.pane-grid{grid-template-columns:1fr}.pane-head h3,.pane-head h2{font-size:1.55rem}}


/* ---------- turtle cursor ---------- */
.turcur{position:fixed;left:0;top:0;width:0;height:0;z-index:9999;pointer-events:none;will-change:transform}
.turcur svg{position:absolute;left:-70px;top:-42px;width:76px;height:84px;overflow:visible;filter:drop-shadow(0 3px 8px rgba(0,0,0,.5))}
.turcur .fa{transform-origin:-20px -10px;animation:turFlapA var(--sw,.62s) ease-in-out infinite}
.turcur .fb{transform-origin:-20px 10px;animation:turFlapB var(--sw,.62s) ease-in-out infinite}
.turcur .ra{transform-origin:-48px -8px;animation:turFlapB calc(var(--sw,.62s) * 1.6) ease-in-out infinite}
.turcur .rb{transform-origin:-48px 8px;animation:turFlapA calc(var(--sw,.62s) * 1.6) ease-in-out infinite}
.turcur.near svg{filter:drop-shadow(0 0 10px color-mix(in srgb,var(--signal) 75%,transparent)) drop-shadow(0 3px 8px rgba(0,0,0,.5))}
@keyframes turFlapA{0%,100%{transform:rotate(-12deg)}50%{transform:rotate(13deg)}}
@keyframes turFlapB{0%,100%{transform:rotate(12deg)}50%{transform:rotate(-13deg)}}
.bubbles{position:fixed;left:0;top:0;width:0;height:0;z-index:9998;pointer-events:none}
.bubbles i{position:absolute;display:block;border-radius:50%;border:1.5px solid rgba(226,246,244,.9);background:rgba(226,246,244,.16);animation:bubbleUp .9s ease-out forwards}
@keyframes bubbleUp{0%{opacity:.95;transform:translate(0,0) scale(.5)}100%{opacity:0;transform:translate(var(--bx),-46px) scale(1.15)}}
html.turtle-on,html.turtle-on *{cursor:none!important}
html.turtle-on input,html.turtle-on textarea,html.turtle-on select{cursor:auto!important}
.turtletoggle{font:inherit;font-family:var(--mono);font-size:.72rem;color:var(--on-panel-2);background:none;border:0;border-bottom:1px dashed rgba(159,194,196,.5);padding:0 0 1px;cursor:pointer}
.turtletoggle:hover{color:var(--on-panel);border-bottom-color:var(--signal)}
.turtletoggle[hidden]{display:none}
@media (prefers-reduced-motion:reduce){.turcur .fa,.turcur .fb,.turcur .ra,.turcur .rb{animation:none}.bubbles i{animation-duration:.01ms}}


/* ---------- the home view's own hero ---------- */
#v-home .hero .wrap{position:relative;z-index:3;padding-top:96px;padding-bottom:88px;display:grid;grid-template-columns:minmax(0,1fr);align-items:end}
#v-home .hero .wrap>div{max-width:46rem}
#v-home .hero h1{font-size:clamp(2.8rem,6.6vw,5.4rem);line-height:.98;margin:20px 0 22px;max-width:none}
#v-home .hero .lede{max-width:34rem;font-size:1.22rem;line-height:1.5;text-shadow:0 1px 12px rgba(0,0,0,.4)}
#v-home .hero h1{text-shadow:0 2px 20px rgba(0,0,0,.4)}
#v-home .hero .cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
#v-home .hero .cta .btn-signal{box-shadow:0 12px 30px -12px var(--signal)}
#v-home .hero-photo{background-image:var(--photo-reef);background-position:42% 45%;transform:scaleX(-1);filter:saturate(1.2) contrast(1.05);opacity:1;mix-blend-mode:normal}
#v-home .hero-scrim{background:linear-gradient(90deg,rgba(4,26,34,.72) 0%,rgba(4,26,34,.42) 40%,rgba(4,26,34,.08) 70%,rgba(4,26,34,.2) 100%),linear-gradient(180deg,rgba(4,26,34,.45) 0%,rgba(4,26,34,0) 30%,rgba(4,26,34,.25) 70%,var(--hero-bot) 100%)}
#v-home .hero canvas{position:absolute;inset:0;width:100%;height:100%;display:block;z-index:2;opacity:.55;mix-blend-mode:screen}
#v-home .surface .cta{justify-content:flex-end;margin-top:0}
#v-home section.stop{padding:92px 0}
@media (max-width:820px){#v-home .hero .wrap{padding-top:64px;padding-bottom:56px}#v-home .hero-photo{background-position:35% 50%}#v-home .surface .cta{justify-content:flex-start}}
@media (max-width:640px){#v-home section.stop{padding:56px 0}}


/* ---------- footer ---------- */
.site-foot{border-top:1px solid var(--line);background:color-mix(in srgb,var(--panel) 92%,transparent);color:var(--on-panel);margin-top:0}
.site-foot .wrap{display:block;padding-top:56px;padding-bottom:0}
.foot-top{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));gap:36px 40px;padding-bottom:44px}
.foot-brand .mark{width:112px;height:78px;border-radius:14px;background:radial-gradient(circle at 35% 30%,var(--aqua),var(--panel) 72%);box-shadow:inset 0 0 0 1.5px var(--signal);display:grid;place-items:center;overflow:hidden}
.foot-brand .mark img{width:92px;height:auto;display:block}
.foot-brand p{margin-top:18px;color:var(--on-panel-2);font-size:.96rem;max-width:22rem;line-height:1.5}
.foot-col h4{font-family:var(--mono);font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--on-panel);font-weight:500;margin-bottom:16px}
.foot-col ul{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.foot-col a{text-decoration:none;color:var(--on-panel-2);font-size:.98rem;border-bottom:1px solid transparent}
.foot-col a:hover{color:var(--on-panel);border-bottom-color:var(--signal)}
.foot-col .val{display:block;font-family:var(--mono);font-size:.72rem;color:var(--on-panel-2);opacity:.75;margin-top:2px}
.foot-bar{display:flex;flex-wrap:wrap;gap:10px 28px;align-items:center;padding:18px 0 28px;border-top:1px solid rgba(159,194,196,.2);font-family:var(--mono);font-size:.72rem;color:var(--on-panel-2)}
.foot-bar .mid{margin-left:auto}
.foot-bar .end{margin-left:auto}
@media (max-width:900px){.foot-top{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:560px){.foot-top{grid-template-columns:1fr}.foot-bar .mid,.foot-bar .end{margin-left:0}}


/* ---------- gallery ---------- */
.gal{columns:3;column-gap:16px}
@media (max-width:900px){.gal{columns:2}}
@media (max-width:560px){.gal{columns:1}}
.gal figure{break-inside:avoid;margin:0 0 16px;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--bg-2);box-shadow:var(--shadow)}
.gal .shot{display:block;width:100%;padding:0;border:0;background:none;cursor:zoom-in;position:relative;line-height:0}
.gal .shot img{display:block;width:100%;height:auto}
.gal .shot::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,26,34,0) 60%,rgba(4,26,34,.45) 100%);opacity:0;transition:opacity .18s ease}
.gal .shot:hover::after,.gal .shot:focus-visible::after{opacity:1}
.gal .shot:focus-visible{outline:2px solid var(--signal);outline-offset:-3px}
.gal figcaption{display:flex;gap:12px;align-items:baseline;padding:12px 16px 14px;color:var(--ink);font-size:.99rem;line-height:1.3}
.gal figcaption .n{font-family:var(--mono);font-size:.7rem;color:var(--ink-3);font-variant-numeric:tabular-nums;flex:none}
.gal-empty{padding:28px 0 8px;color:var(--ink-2)}
@media (prefers-reduced-motion:reduce){.gal .shot::after{transition:none}}

/* the lightbox sits above everything, outside the routed views */
.lb{position:fixed;inset:0;z-index:200;display:flex;flex-direction:column;background:rgba(4,26,34,.95);backdrop-filter:blur(8px);color:var(--on-panel)}
.lb[hidden]{display:none}
.lb-bar{flex:none;display:flex;align-items:center;gap:18px;padding:16px 22px;font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--on-panel-2)}
.lb-stage{position:relative;flex:1 1 auto;min-height:0;display:flex;align-items:center;justify-content:center;padding:0 64px}
.lb-stage img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;border-radius:10px;box-shadow:0 30px 80px -34px rgba(0,0,0,.85)}
.lb-foot{flex:none;padding:14px 22px 26px;text-align:center}
.lb-foot .cap{font-family:var(--display);font-weight:700;font-size:1.06rem}
.lb-foot .hint{font-family:var(--mono);font-size:.68rem;color:var(--on-panel-2);margin-top:6px;opacity:.8}
.lb-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-width:42px;height:42px;padding:0 14px;border-radius:999px;border:1.5px solid rgba(234,245,242,.4);background:rgba(4,26,34,.5);color:var(--on-panel);font-family:var(--display);font-weight:700;font-size:1rem;cursor:pointer}
.lb-btn:hover{background:rgba(234,245,242,.14)}
.lb-btn:focus-visible{outline:2px solid var(--signal);outline-offset:2px}
.lb-x{margin-left:auto}
.lb-prev,.lb-next{position:absolute;top:50%;transform:translateY(-50%)}
.lb-prev{left:12px}.lb-next{right:12px}
@media (max-width:640px){.lb-stage{padding:0 12px}.lb-prev{left:4px}.lb-next{right:4px}.lb-foot .hint{display:none}}


/* ---------- PADI eLearning links ---------- */
.el-btn{border-color:var(--aqua);color:var(--ink)}
.el-btn:hover{background:var(--aqua-soft)}
.el-btn .go{font-family:var(--mono);font-weight:500;font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.spec .c .el-mini{display:inline-block;margin-left:6px;padding:3px 0;color:var(--aqua);text-decoration:none;border-bottom:1px solid transparent;font-size:.7rem}
.spec .c .el-mini:hover{border-bottom-color:var(--aqua)}
.el-bar{display:flex;flex-wrap:wrap;align-items:center;gap:12px 16px;padding:16px 20px;border:1px solid var(--line);border-radius:14px;background:var(--bg-2);margin-bottom:28px}
.el-bar label{font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.el-bar select{font-family:var(--display);font-weight:700;font-size:.95rem;color:var(--ink);background:var(--bg);border:1.5px solid var(--line-strong);border-radius:999px;padding:9px 14px;cursor:pointer}
.el-bar select:focus-visible{outline:2px solid var(--signal);outline-offset:2px}
.el-bar .note{flex:1 1 20rem;margin:0;font-size:.92rem;color:var(--ink-2);line-height:1.45}
.el-groups{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 32px}
@media (max-width:820px){.el-groups{grid-template-columns:1fr}}
.el-group h5{margin-bottom:10px}
.el-list{list-style:none;margin:0;padding:0}
.el-list li{border-bottom:1px solid var(--line)}
.el-list li:first-child{border-top:1px solid var(--line)}
.el-list a{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:baseline;gap:4px 16px;padding:12px 4px;text-decoration:none;color:var(--ink)}
.el-list a:hover{background:var(--bg-2)}
.el-list a:focus-visible{outline:2px solid var(--signal);outline-offset:-2px}
.el-list .n{font-family:var(--display);font-weight:700;font-size:1.02rem}
.el-list .go{font-family:var(--mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--aqua);white-space:nowrap}
.el-list .d{grid-column:1;font-size:.92rem;color:var(--ink-2)}
.el-foot{margin-top:26px;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.el-foot .hint{font-family:var(--mono);font-size:.68rem;color:var(--ink-3)}


/* ---------- phones ---------- */
/* The header was one flex row that could not shrink below 496px, so every page
   scrolled sideways on a phone. Below 600px it stacks: brand and the booking
   button on top, the three routes on their own line underneath. */
@media (max-width:860px){
  .nav .wrap{flex-wrap:wrap;height:auto;gap:8px 12px;padding-top:9px;padding-bottom:0}
  .brand{flex:1 1 auto;min-width:0;gap:10px}
  .brand small{white-space:nowrap}
  .nav .btn{flex:none;margin-left:auto;white-space:nowrap}
  .nav-links{order:3;flex:1 0 100%;margin-left:0;justify-content:space-between;gap:4px;
             font-size:.96rem;border-top:1px solid var(--line);margin-top:1px}
  .nav-links a{padding:11px 2px 9px;white-space:nowrap}

  /* the header is now two rows tall, so a second sticky bar under it would eat
     a third of the screen - the filters scroll away with the page instead */
  .filters{position:static;padding:12px 0;margin-bottom:28px}
  .filters .count{margin-left:0;flex:1 0 100%}
}

@media (max-width:600px){
  .brand{font-size:1.06rem}
  .brand .mark{width:44px;height:31px}
  .brand .mark img{width:35px}
  .brand small{font-size:.56rem;letter-spacing:.1em}
  .nav .btn{padding:9px 15px;font-size:.84rem}

  /* mono labels were rendering at 9.6-11.2px, too small to read on a phone */
  .stat .k{font-size:.72rem}
  .gauge .k{font-size:.72rem}
  .bx-head span,.bx-sub span,.bx-sub b{font-size:.72rem}
  .bx-item .sm{font-size:.74rem}
  .bx-item .mt{font-size:.76rem}
  .pane-grid .k{font-size:.72rem}
  .pane-head .lvl{font-size:.72rem}
  .pane-head .aka{font-size:.8rem}
  .sl-lvl span{font-size:.68rem;padding:6px 10px}
  .sl-foot .keys span,.sl-foot .hint{font-size:.74rem}
  .rev .by{font-size:.8rem}
  .rev .rs{font-size:.78rem}
  .foot-col h4{font-size:.72rem}
  .el-list .go{font-size:.74rem}
  .gal figcaption .n{font-size:.74rem}
  .spec .c{font-size:.74rem}
  .spec .tag{font-size:.64rem}

  /* stats read better two-up with room to breathe */
  .stats{grid-template-columns:1fr 1fr}
  .stat{padding:14px 16px}
  .stat .v{font-size:1.35rem}
}

/* links sat at 17-25px high, under the 30px a thumb needs */
@media (max-width:760px){
  .foot-col ul{gap:2px}
  .foot-col a{display:inline-block;padding:7px 0}
  .spec .c .el-mini{padding:8px 0 7px}
  .rules-note a{display:inline-block;padding:7px 0}
  .gmore{display:inline-block;padding:7px 0}
  .surface .info a{display:inline-block;padding:7px 0}
  .notice a,.el-foot a{display:inline-block}
  .pane-foot .btn{width:100%;justify-content:center}
  .el-bar select{width:100%}
}

/* 56px of side padding is a lot of a 360px screen */
@media (max-width:430px){
  .wrap{padding-left:18px;padding-right:18px}
  .hero .wrap{padding-left:18px;padding-right:18px}
  .gal{column-gap:12px}
  .gal figure{margin-bottom:12px}
}

/* the depth chart stays a horizontal scroller on small screens - say so */
@media (max-width:760px){
  .profile{-webkit-overflow-scrolling:touch}
  .profile::after{content:"Scroll the chart sideways to read all 21 sites";
    display:block;margin-top:10px;font-family:var(--mono);font-size:.7rem;color:var(--ink-3)}
}

/* second pass: the last of the sub-11.5px microcopy and two stray tap targets */
@media (max-width:600px){
  .pane-sec h4{font-size:.72rem}
  .pane-fig .note{font-size:.72rem}
  .pane-foot .hint,.el-foot .hint{font-size:.72rem}
  .revrail-foot .note{font-size:.72rem}
  .rev .rs,.rev .rs.none{font-size:.76rem}
  .spec .tag{font-size:.72rem}
  .sl-lvl span{font-size:.72rem}
  .spec .c .el-mini{font-size:.76rem}
  .filters .chip{font-size:.92rem;padding:9px 15px}
}
@media (max-width:760px){
  .turtletoggle{display:inline-block;padding:7px 0}
  .foot-bar a{display:inline-block;padding:6px 0}
}


/* ---------- phone deck: sections become swipeable pages ---------- */
/* Only active when the script has added .deck to <html>, so a phone with no
   JavaScript still gets the ordinary vertical page rather than a broken one. */
@media (max-width:860px){
  html.deck, html.deck body{overflow:hidden;height:100%}
  html.deck body{overscroll-behavior:none}

  html.deck main.view{
    display:flex;flex-wrap:nowrap;align-items:stretch;
    height:calc(100vh - var(--deckh,112px));
    height:calc(100dvh - var(--deckh,112px));
    overflow-x:auto;overflow-y:hidden;
    scroll-snap-type:x mandatory;scroll-behavior:smooth;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  html.deck main.view::-webkit-scrollbar{display:none}
  html.deck main.view > .rail{display:none}

  html.deck main.view > section,
  html.deck main.view > footer{
    flex:0 0 100%;width:100%;min-width:100%;
    scroll-snap-align:start;scroll-snap-stop:always;
    overflow-y:auto;overscroll-behavior-y:contain;
    -webkit-overflow-scrolling:touch;
    padding-bottom:calc(var(--pagerh,74px) + 18px);   /* clears the pager */
  }
  /* a slide is its own scroll box, so the generous desktop rhythm is wasted here */
  html.deck main.view > section.stop,
  html.deck #v-home section.stop{padding-top:26px;padding-bottom:calc(var(--pagerh,74px) + 18px)}
  html.deck .hero .wrap{padding-top:30px;padding-bottom:34px}
  html.deck #v-home .hero .wrap{padding-top:30px;padding-bottom:34px}
  html.deck .hero{min-height:100%}

  /* multi-column inside a height-capped scroller spills sideways into new
     columns, so the gallery runs as a single column on the deck */
  html.deck .gal{columns:1}

  /* the pager: where you are, and how to get elsewhere */
  .deck-pager{position:fixed;left:0;right:0;bottom:0;z-index:18;display:none;
    align-items:center;gap:10px;padding:9px 14px calc(9px + env(safe-area-inset-bottom));
    background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px);
    border-top:1px solid var(--line)}
  html.deck .deck-pager{display:flex}
  .deck-pager .dp-btn{flex:none;width:38px;height:38px;border-radius:999px;
    border:1.5px solid var(--line-strong);background:transparent;color:var(--ink);
    font-size:1rem;line-height:1;cursor:pointer;display:grid;place-items:center}
  .deck-pager .dp-btn:disabled{opacity:.32}
  .deck-pager .dp-btn:focus-visible{outline:2px solid var(--signal);outline-offset:2px}
  .deck-pager .dp-mid{flex:1 1 auto;min-width:0;text-align:center}
  .deck-pager .dp-name{display:block;font-family:var(--display);font-weight:700;
    font-size:.92rem;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .deck-pager .dp-dots{display:flex;justify-content:center;gap:5px;margin-top:5px}
  .deck-pager .dp-dot{width:6px;height:6px;border-radius:999px;background:var(--line-strong);
    border:0;padding:0;cursor:pointer}
  .deck-pager .dp-dot[aria-current="true"]{background:var(--signal);width:18px}
  @media (prefers-reduced-motion:reduce){html.deck main.view{scroll-behavior:auto}}
}


/* ---------- standalone pages (generated) ---------- */
.page-crumbs{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);display:flex;flex-wrap:wrap;gap:6px 10px;margin:0 0 18px}
.page-crumbs a{color:var(--ink-2);text-decoration:none}
.page-crumbs a:hover{color:var(--ink);text-decoration:underline}
.page-crumbs span[aria-hidden]{opacity:.6}
.page-pane{border:1px solid var(--line);border-radius:16px;background:var(--bg-2);overflow:hidden;border-left:5px solid var(--lvl,var(--aqua))}
.page-more{margin-top:44px;display:grid;gap:14px}
.page-more h2{font-family:var(--display);font-size:1.45rem;margin:0}
.page-more p{margin:0;color:var(--ink-2);max-width:46rem}
.hub-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.hub-list a{display:grid;gap:4px;height:100%;padding:14px 16px;border:1px solid var(--line);border-left:4px solid var(--lvl);border-radius:12px;background:var(--bg-2);color:inherit;text-decoration:none;transition:background .12s ease,border-color .12s ease}
.hub-list a:hover{background:var(--bg);border-color:var(--line-strong)}
.hub-list a:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.hub-list .nm{font-family:var(--display);font-weight:700;font-size:1.08rem;line-height:1.25}
.hub-list .mt{font-family:var(--mono);font-size:.74rem;letter-spacing:.04em;color:var(--ink-2)}
.hub-list .tg{font-size:.92rem;color:var(--ink-2);line-height:1.45}
.hub-group{display:grid;gap:14px;margin-top:38px}
.hub-group:first-of-type{margin-top:6px}
.hub-group header{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px;border-bottom:1px solid var(--line);padding-bottom:8px}
.hub-group h2{font-family:var(--display);font-size:1.5rem;margin:0}
.hub-group header span{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.hub-group header p{flex-basis:100%;margin:0;color:var(--ink-2);font-size:.98rem}
.prose{max-width:46rem;display:grid;gap:14px}
.prose h2{font-family:var(--display);font-size:1.45rem;margin:26px 0 0}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:var(--ink-2)}
.prose p{margin:0}
.prose ul{margin:0;padding-left:22px;display:grid;gap:6px}
.prose strong{color:var(--ink)}
.prose .updated{font-family:var(--mono);font-size:.74rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}