/* Self-hosted variable fonts (SIL Open Font License, see assets/fonts/LICENSE-*.txt) */
@font-face{font-family:"Outfit";font-style:normal;font-weight:100 900;font-display:swap;src:url("../fonts/outfit-latin-wght-normal.woff2") format("woff2")}
@font-face{font-family:"Newsreader";font-style:normal;font-weight:200 800;font-display:swap;src:url("../fonts/newsreader-latin-opsz-normal.woff2") format("woff2")}
@font-face{font-family:"Newsreader";font-style:italic;font-weight:200 800;font-display:swap;src:url("../fonts/newsreader-latin-opsz-italic.woff2") format("woff2")}
@font-face{font-family:"Azeret Mono";font-style:normal;font-weight:100 900;font-display:swap;src:url("../fonts/azeret-mono-latin-wght-normal.woff2") format("woff2")}

/* Base reset */
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0}
img,svg{max-width:100%}
[hidden]{display:none!important}

/* Layout: one continuous descent. Surface (porcelain, a live water surface) > shallows (disciplines as depth strata)
   > open water (work as a bathymetric chart) > the deep zone (method, since 2013) > the brand block (contact).
   A fixed depth gauge on the right reads the scroll position in metres. */
:root{
  color-scheme:light;
  /* Brand kit: Ultramarine #243BBA, Ink #171918, White #FFFFFF. Everything else is derived from those three. */
  --paper:#F3F4F9;        /* surface: cool porcelain, biased toward ultramarine */
  --shallows:#E7E9F5;
  --lens:#F7F8FD;
  --ink:#171918;          /* brand Ink */
  --ink-soft:#4F525F;
  --accent:#243BBA;       /* brand Ultramarine */
  --line:#C8CDEA;
  --line-strong:#A0A9DC;
  --watermark:#E3E6F4;
  --water-shade:#243BBA;
  --water-light:#FFFFFF;
  --deep-bg:#121C5C;      /* ultramarine, deepened */
  --abyss:#0A1036;
  --deep-fg:#EEF0FA;
  --deep-soft:#A9B3E4;
  --deep-line:#2A3884;
  --deep-accent:#A5B4FF;
  --brand:#243BBA;        /* the logo ground: identical in both themes */
  --foam:#FFFFFF;         /* brand White, for reverse artwork */
  --foam-line:#7483D4;
  --glass:rgba(243,244,249,.74);
  --glass-deep:rgba(18,28,92,.62);
  --shadow:rgba(23,25,24,.28);

  --font-display:"Outfit","Avenir Next","Futura","Century Gothic",system-ui,sans-serif;
  --font-text:"Newsreader","Iowan Old Style","Palatino Linotype",Georgia,serif;
  --font-mono:"Azeret Mono",ui-monospace,"SF Mono",Menlo,Consolas,monospace;

  --gutter:clamp(16px,4.2vw,64px);
  --ease:cubic-bezier(.2,.7,.2,1);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#0B0D24; --shallows:#10132F; --lens:#171B44; --ink:#ECEDF3; --ink-soft:#A3A8C8;
    --accent:#93A3FF; --line:#252A58; --line-strong:#3A4183; --watermark:#14173A;
    --water-shade:#000000; --water-light:#93A3FF;
    --deep-bg:#070A21; --abyss:#04061A; --deep-fg:#ECEDF6; --deep-soft:#949CC8; --deep-line:#1C2356; --deep-accent:#93A3FF;
    --glass:rgba(11,13,36,.72); --glass-deep:rgba(7,10,33,.66); --shadow:rgba(0,0,0,.6);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#0B0D24; --shallows:#10132F; --lens:#171B44; --ink:#ECEDF3; --ink-soft:#A3A8C8;
    --accent:#93A3FF; --line:#252A58; --line-strong:#3A4183; --watermark:#14173A;
    --water-shade:#000000; --water-light:#93A3FF;
    --deep-bg:#070A21; --abyss:#04061A; --deep-fg:#ECEDF6; --deep-soft:#949CC8; --deep-line:#1C2356; --deep-accent:#93A3FF;
    --glass:rgba(11,13,36,.72); --glass-deep:rgba(7,10,33,.66); --shadow:rgba(0,0,0,.6);
    color-scheme:dark;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden;overflow-x:clip}
body{background:var(--paper);color:var(--ink);font-family:var(--font-text);font-size:clamp(1.0625rem,.3vw + .98rem,1.1875rem);line-height:1.62;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;overflow-x:clip}
a{color:inherit}
::selection{background:var(--accent);color:var(--paper)}
h1,h2,h3{font-family:var(--font-display);font-weight:300;letter-spacing:-.032em;line-height:1.02;margin:0;text-wrap:balance}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
.skip{position:absolute;left:-9999px;top:0}
.skip:focus{left:16px;top:calc(16px + env(safe-area-inset-top,0px));z-index:100;background:var(--paper);color:var(--ink);padding:.5rem .8rem}

.wrap{max-width:1360px;margin-inline:auto;padding-left:max(var(--gutter),env(safe-area-inset-left,0px));padding-right:max(var(--gutter),env(safe-area-inset-right,0px))}
.eyebrow{font-family:var(--font-mono);font-size:.7rem;font-weight:400;letter-spacing:.15em;text-transform:uppercase;color:var(--ink-soft)}
.it{font-family:var(--font-text);font-style:italic;font-weight:300;letter-spacing:-.02em;color:var(--accent)}

/* ---------- navigation ---------- */
.nav{position:fixed;inset:0 0 auto;z-index:70;padding-top:env(safe-area-inset-top,0px);color:var(--ink);transition:background-color .6s,color .6s,box-shadow .6s}
.nav-in{display:flex;align-items:center;gap:clamp(1rem,2.6vw,2.5rem);height:72px;max-width:1360px;margin-inline:auto;padding-left:max(var(--gutter),env(safe-area-inset-left,0px));padding-right:max(var(--gutter),env(safe-area-inset-right,0px))}
.nav.solid{background:var(--glass);-webkit-backdrop-filter:blur(14px) saturate(1.2);backdrop-filter:blur(14px) saturate(1.2);box-shadow:0 1px 0 var(--line)}
.nav[data-tone="deep"]{color:var(--deep-fg)}
.nav[data-tone="deep"].solid{background:var(--glass-deep);box-shadow:0 1px 0 var(--deep-line)}
.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none;color:var(--accent);transition:color .6s}
.nav[data-tone="deep"] .brand{color:var(--deep-fg)}
.brand svg{height:21px;width:auto;display:block;fill:currentColor}
.brand-sub{font-family:var(--font-mono);font-size:.62rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-soft);transform:translateY(2px)}
.nav[data-tone="deep"] .brand-sub{color:var(--deep-soft)}
.links{display:flex;gap:clamp(1rem,2.2vw,2.1rem);list-style:none;margin:0 0 0 auto;padding:0}
.links a{font-family:var(--font-display);font-size:.95rem;text-decoration:none;opacity:.7;transition:opacity .3s;position:relative;padding-block:.3rem}
.links a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease)}
.links a:hover,.links a[aria-current="true"]{opacity:1}
.links a[aria-current="true"]::after{transform:scaleX(1)}
.nav-cta{font-family:var(--font-display);font-size:.92rem;text-decoration:none;padding:.5rem 1rem;border:1px solid currentColor;border-radius:999px;transition:background-color .3s,color .3s}
.nav-cta:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.nav[data-tone="deep"] .nav-cta:hover{background:var(--deep-fg);color:var(--deep-bg);border-color:var(--deep-fg)}
.menu-btn{display:none;margin-left:auto;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;background:none;border:1px solid currentColor;border-radius:999px;color:inherit;padding:.5rem .95rem;cursor:pointer}
.nav.sheet-open{color:var(--ink);background:transparent;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none}
.nav.sheet-open .brand{color:var(--accent)}
.sheet{position:fixed;inset:0;z-index:60;background:var(--paper);display:flex;flex-direction:column;justify-content:space-between;padding-top:calc(env(safe-area-inset-top,0px) + 104px);padding-bottom:calc(env(safe-area-inset-bottom,0px) + 28px);padding-left:max(var(--gutter),env(safe-area-inset-left,0px));padding-right:max(var(--gutter),env(safe-area-inset-right,0px))}
.sheet ol{list-style:none;margin:0;padding:0;display:grid;gap:.4rem}
.sheet a{font-family:var(--font-display);font-weight:300;font-size:clamp(2.2rem,10vw,3.4rem);letter-spacing:-.03em;text-decoration:none;display:flex;align-items:baseline;gap:1rem}
.sheet a small{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;color:var(--ink-soft);min-width:3.4rem}
.sheet p{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft)}
@media (max-width:900px){.links,.nav-cta{display:none}.menu-btn{display:inline-flex}}

/* ---------- depth gauge ---------- */
.gauge{position:fixed;right:max(14px,env(safe-area-inset-right,0px));top:50%;transform:translateY(-50%);z-index:40;display:none;width:52px;height:min(54vh,500px);color:var(--ink-soft);transition:color .6s}
.gauge[data-tone="deep"]{color:var(--deep-soft)}
@media (min-width:1200px) and (min-height:640px){.gauge{display:block}}
.g-read{position:absolute;right:0;top:-2.4rem;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.04em;font-variant-numeric:tabular-nums;white-space:nowrap}
.g-read small{font-size:.6rem;margin-left:.15rem;opacity:.7}
.g-track{position:absolute;right:6px;top:0;bottom:0;width:8px}
.g-track::before{content:"";position:absolute;right:0;top:0;bottom:0;width:1px;background:currentColor;opacity:.55}
.g-track::after{content:"";position:absolute;right:0;top:0;bottom:0;width:5px;background:repeating-linear-gradient(to bottom,currentColor 0 1px,transparent 1px 10px);opacity:.38}
.g-mark{position:absolute;right:-4px;width:16px;height:2px;background:var(--accent);top:0;transform:translateY(var(--y,0px));transition:background-color .6s}
.gauge[data-tone="deep"] .g-mark{background:var(--deep-fg)}
.g-stops{list-style:none;margin:0;padding:0;position:absolute;inset:0}
.g-stops li{position:absolute;right:0;transform:translateY(-50%)}
.g-stops button{display:flex;align-items:center;gap:.55rem;background:none;border:0;padding:.2rem 0;color:inherit;cursor:pointer;font-family:var(--font-mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;white-space:nowrap}
.g-stops button span{opacity:0;transform:translateX(6px);transition:opacity .4s,transform .4s var(--ease)}
.g-stops button i{display:block;width:9px;height:9px;border:1px solid currentColor;border-radius:50%;background:transparent;transition:background-color .3s}
.g-stops button.on i{background:currentColor}
.gauge:hover .g-stops span,.gauge:focus-within .g-stops span,.g-stops button.on span{opacity:1;transform:none}

/* ---------- hero: the surface ---------- */
.hero{position:relative;min-height:clamp(620px,92svh,1000px);display:flex;flex-direction:column;background:var(--paper);overflow:hidden;isolation:isolate;touch-action:pan-y}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;display:block;z-index:0}
.hero-inner{position:relative;z-index:1;flex:1;display:flex;flex-direction:column;gap:clamp(2rem,5vw,3.5rem);padding-top:calc(72px + env(safe-area-inset-top,0px) + clamp(1.75rem,6vw,5rem));padding-bottom:clamp(1.5rem,3vw,2.5rem)}
.hero-title{font-size:clamp(3.35rem,12.4vw,12.6rem);font-weight:300;line-height:.9;letter-spacing:-.05em;margin-block:auto}
.hero-title .ln{display:block}
.hero-title .ln + .ln{padding-left:.86em}
.hero-title .it{font-size:1.04em;letter-spacing:-.035em}
.hero.is-live .hero-title,.hero.is-live .hero-title .it{color:transparent}
.hero-base{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.35fr) auto;gap:clamp(1.25rem,3vw,3rem);align-items:end;border-top:1px solid var(--line);padding-top:1.3rem}
.sea{display:grid;gap:.35rem;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;color:var(--ink-soft)}
.sea b{font-weight:500;color:var(--ink);font-variant-numeric:tabular-nums}
.sea .hint{opacity:.75}
.lede{max-width:40ch;font-size:clamp(1.1rem,.55vw + .95rem,1.32rem);line-height:1.5;text-wrap:pretty}
.actions{display:flex;gap:1.25rem;align-items:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:.65rem;font-family:var(--font-display);font-size:1rem;font-weight:400;text-decoration:none;color:var(--paper);background:var(--accent);padding:.85rem 1.4rem;border-radius:999px;border:0;cursor:pointer;transition:transform .5s var(--ease)}
.btn:hover{transform:translateY(-2px)}
.btn .arr{display:inline-block;transition:transform .5s var(--ease)}
.btn:hover .arr{transform:translateX(4px)}
.textlink{font-family:var(--font-display);font-size:1rem;text-decoration:none;border-bottom:1px solid var(--line-strong);padding-bottom:2px;transition:border-color .3s}
.textlink:hover{border-color:currentColor}
@media (max-width:900px){.hero-base{grid-template-columns:minmax(0,1fr)}.sea{order:3;grid-auto-flow:column;justify-content:space-between}}

/* ---------- shared section head ---------- */
.section-head{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:clamp(1.5rem,5vw,6rem);align-items:end;margin-bottom:clamp(2.5rem,6vw,4.75rem)}
.section-head h2{font-size:clamp(2.15rem,4.9vw,4.4rem);margin-top:1.1rem}
.section-head .note{max-width:44ch;color:var(--ink-soft);text-wrap:pretty}
@media (max-width:900px){.section-head{grid-template-columns:minmax(0,1fr)}}

/* ---------- disciplines: strata ---------- */
.disciplines{background:linear-gradient(var(--paper),var(--shallows));padding-block:clamp(5rem,11vw,9.5rem) clamp(4rem,8vw,7rem)}
.strata{--c1:clamp(8.5rem,15vw,13rem);--g:clamp(1rem,2.6vw,2.5rem);list-style:none;margin:0;padding:0;border-bottom:1px solid var(--line)}
.stratum{border-top:1px solid var(--line);background:color-mix(in srgb,var(--accent) calc(var(--i) * 1.6%),transparent);transition:background-color .6s}
.stratum:hover{background:color-mix(in srgb,var(--accent) calc(var(--i) * 1.6% + 3%),transparent)}
.stratum h3{margin:0;font:inherit;letter-spacing:normal}
.s-btn{display:grid;grid-template-columns:var(--c1) minmax(0,1fr) clamp(7rem,17vw,15rem) 2.4rem;align-items:center;gap:var(--g);width:100%;padding-block:clamp(1.25rem,2.4vw,2rem);padding-inline:clamp(0rem,1vw,1rem);background:none;border:0;color:inherit;text-align:left;cursor:pointer;font:inherit}
.s-z{display:grid;gap:.25rem;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft)}
.s-z b{font-weight:500;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:.06em}
.s-main{min-width:0}
.s-name{display:block;font-family:var(--font-display);font-weight:300;font-size:clamp(2.1rem,4.8vw,4.1rem);letter-spacing:-.04em;line-height:1}
.s-gist{display:block;font-family:var(--font-text);font-size:1.02rem;font-style:italic;color:var(--ink-soft);margin-top:.5rem}
.s-swell{display:block;width:100%;height:46px}
.s-icon{position:relative;width:2.4rem;height:2.4rem;border:1px solid var(--line-strong);border-radius:50%;transition:transform .6s var(--ease),background-color .4s,border-color .4s}
.s-icon::before,.s-icon::after{content:"";position:absolute;left:50%;top:50%;width:12px;height:1px;background:currentColor;transform:translate(-50%,-50%)}
.s-icon::after{transform:translate(-50%,-50%) rotate(90deg);transition:transform .6s var(--ease)}
.stratum.open .s-icon{background:var(--accent);border-color:var(--accent);color:var(--paper)}
.stratum.open .s-icon::after{transform:translate(-50%,-50%) rotate(0deg)}
.s-detail{display:grid;grid-template-rows:0fr;transition:grid-template-rows .7s var(--ease)}
.stratum.open .s-detail{grid-template-rows:1fr}
.s-detail > div{min-height:0;overflow:hidden}
.s-body{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:clamp(1.5rem,4vw,4rem);padding-bottom:clamp(1.75rem,3vw,2.75rem);padding-left:calc(var(--c1) + var(--g) + clamp(0rem,1vw,1rem));padding-right:clamp(0rem,1vw,1rem)}
.s-body p{max-width:48ch;font-size:1.08rem;text-wrap:pretty}
.s-body ul{list-style:none;margin:0;padding:0;display:grid;gap:.55rem;font-family:var(--font-display);font-size:1rem;align-content:start}
.s-body li{display:flex;gap:.8rem;align-items:center}
.s-body li::before{content:"";width:16px;height:1px;background:var(--accent);flex:none}
@media (max-width:780px){
  .s-btn{grid-template-columns:minmax(0,1fr) 2.4rem;row-gap:.8rem}
  .s-z{grid-column:1 / -1;grid-auto-flow:column;justify-content:start;gap:.75rem}
  .s-swell{display:none}
  .s-body{grid-template-columns:minmax(0,1fr);padding-left:clamp(0rem,1vw,1rem)}
}

/* ---------- work: bathymetric chart ---------- */
.work{background:var(--shallows);padding-block:clamp(4.5rem,9vw,7.5rem) clamp(3.5rem,7vw,6rem)}
.chart-block{position:relative}
.chart{position:relative;height:clamp(440px,47vw,660px);touch-action:pan-y;cursor:crosshair;max-width:100%}
.chart canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.w-card{position:absolute;z-index:3;left:0;top:0;width:min(320px,calc(100% - 32px));background:var(--paper);border:1px solid var(--line-strong);box-shadow:0 22px 44px -28px var(--shadow);padding:1.05rem 1.2rem 1.15rem;pointer-events:none;opacity:0;transform:translateY(6px);transition:opacity .35s,transform .45s var(--ease);display:grid;gap:.5rem}
.w-card.show{opacity:1;transform:none}
.w-card .wc-top{display:flex;justify-content:space-between;gap:1rem;font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft)}
.w-card h3{font-size:1.32rem;letter-spacing:-.02em;line-height:1.15}
.w-card p{font-size:.98rem;line-height:1.5;color:var(--ink-soft)}
.w-card .wc-tags{font-family:var(--font-display);font-size:.88rem;color:var(--accent)}
.w-card .wc-flag{font-family:var(--font-mono);font-size:.6rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft);border-top:1px solid var(--line);padding-top:.55rem}
@media (max-width:700px){
  .w-card{position:static;width:auto;margin-top:1rem;pointer-events:auto;transition:none;transform:none}
  .w-card:not(.show){display:none}
}
.chart-legend{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.75rem 2rem;margin-top:1rem;font-family:var(--font-mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft)}
.lg-keys{display:flex;flex-wrap:wrap;gap:.6rem 1.75rem}
.lg-key{display:inline-flex;align-items:center;gap:.6rem}
.lg-key i{display:block;width:24px;height:0;border-top:1.5px solid var(--accent)}
.lg-key i.dash{border-top:1.5px dashed var(--ink-soft)}
.lg-src{display:inline-flex;align-items:center;gap:.55rem}
.lg-src svg{width:14px;height:auto;fill:var(--accent)}
.lg-key i.dot{width:9px;height:9px;border:1.5px solid var(--accent);border-top-width:1.5px;border-radius:50%;background:var(--shallows)}
.lg-key i.ring{width:9px;height:9px;border:1.5px dashed var(--ink-soft);border-top-width:1.5px;border-radius:50%}
.lg-key i.bead{width:7px;height:7px;border:0;border-radius:50%;background:var(--accent)}
/* the project list: a year-by-year ledger of names */
.ledger{margin-top:clamp(3rem,6vw,5rem);display:grid}
.ly{display:grid;grid-template-columns:clamp(4.25rem,10vw,8.5rem) minmax(0,1fr);gap:clamp(1rem,3vw,2.5rem);padding-block:clamp(1.1rem,2vw,1.6rem);border-top:1px solid var(--line)}
.ly:last-child{border-bottom:1px solid var(--line)}
.ly-year{font-family:var(--font-display);font-weight:200;font-size:clamp(1.9rem,3.6vw,3.1rem);line-height:1;letter-spacing:-.04em;color:var(--ink-soft);font-variant-numeric:tabular-nums}
.ly-body{min-width:0;display:grid;gap:.7rem}
.ly-names{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;align-items:baseline;gap:.25rem clamp(1.25rem,2.6vw,2.5rem)}
.nm{display:inline-flex;align-items:center;gap:.6rem;background:none;border:0;padding:0;color:var(--ink);font-family:var(--font-display);font-weight:300;font-size:clamp(1.45rem,2.7vw,2.35rem);letter-spacing:-.03em;line-height:1.15;cursor:pointer;text-align:left;transition:color .3s}
.nm .nm-t{background-image:linear-gradient(currentColor,currentColor);background-size:0% 1px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .5s var(--ease)}
.nm:hover,.nm.cur,.nm.on{color:var(--accent)}
.nm.cur .nm-t,.nm:hover .nm-t{background-size:100% 1px}
.nm.wl{font-family:var(--font-text);font-style:italic;font-size:clamp(1.05rem,1.6vw,1.3rem);color:var(--ink-soft);letter-spacing:0}
.glyph{width:7px;height:28px;flex:none;overflow:visible}
.glyph circle{fill:none;stroke:var(--line-strong);stroke-width:1}
.glyph circle.on{fill:var(--accent);stroke:var(--accent)}
.nm.wl .glyph circle.on{fill:none;stroke:var(--ink-soft);stroke-dasharray:1.5 1.5}
.ly-note{display:flex;flex-wrap:wrap;align-items:baseline;gap:.25rem .9rem;max-width:72ch;color:var(--ink-soft);font-size:1rem;line-height:1.5;min-height:1.5em}
.ly-note .sv{font-family:var(--font-mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink)}
.ly-note a{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.06em;color:var(--accent);text-decoration:none;border-bottom:1px solid currentColor}
@media (max-width:600px){.ly{grid-template-columns:3.4rem minmax(0,1fr)}.glyph{height:22px}}

/* ---------- the descent ---------- */
.thermo{height:clamp(150px,20vw,300px);background:linear-gradient(var(--shallows),var(--deep-bg))}
.deep-zone{position:relative;background:linear-gradient(var(--deep-bg) 0%,var(--deep-bg) 55%,var(--abyss) 100%);color:var(--deep-fg)}
.snow{position:sticky;top:0;display:block;width:100%;height:100vh;margin-bottom:-100vh;pointer-events:none;z-index:0}
.deep-zone > section{position:relative;z-index:1}
.deep-zone .eyebrow,.deep-zone .section-head .note{color:var(--deep-soft)}
.deep-zone .it{color:var(--deep-accent)}
.deep-zone :focus-visible{outline-color:var(--deep-fg)}

/* method: the sounding line */
.method{padding-block:clamp(3rem,7vw,6rem) clamp(4rem,9vw,7.5rem)}
.steps-wrap{position:relative;padding-left:clamp(3.25rem,9vw,8rem)}
.plumb{position:absolute;left:clamp(.5rem,3.2vw,3rem);top:0;bottom:0;width:20px;pointer-events:none}
.plumb .guide{position:absolute;left:9px;top:0;bottom:0;width:1px;background:repeating-linear-gradient(to bottom,var(--deep-line) 0 5px,transparent 5px 10px)}
.plumb .cord{position:absolute;left:9px;top:0;width:1px;height:var(--h,0px);background:var(--deep-soft)}
.plumb .lead{position:absolute;left:3px;top:0;width:14px;height:26px;background:var(--deep-fg);clip-path:polygon(34% 0,66% 0,100% 100%,0 100%);transform:translateY(var(--h,0px))}
.plumb .lead::after{content:"";position:absolute;left:50%;top:-6px;width:5px;height:5px;margin-left:-2.5px;border:1px solid var(--deep-fg);border-radius:50%}
.steps{list-style:none;margin:0;padding:0;display:grid;gap:clamp(2.75rem,6.5vw,5.25rem)}
.step{display:grid;grid-template-columns:minmax(5.5rem,9rem) minmax(0,1fr) minmax(0,1.3fr);gap:clamp(1rem,3vw,3rem);align-items:baseline;opacity:.5;transition:opacity 1s var(--ease)}
.step.reached{opacity:1}
.step-mark{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--deep-soft)}
.step h3{font-size:clamp(2.1rem,4.2vw,3.5rem);letter-spacing:-.04em}
.step p{color:var(--deep-soft);max-width:46ch;text-wrap:pretty}
@media (max-width:780px){.step{grid-template-columns:minmax(0,1fr);gap:.55rem}}

/* since 2013 */
.since{padding-block:clamp(3rem,7vw,6rem) clamp(5rem,10vw,9rem)}
.since-top{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:clamp(1.5rem,5vw,5rem);align-items:end}
.since-year{display:block;font-family:var(--font-display);font-weight:200;font-size:clamp(6.5rem,22vw,19.5rem);line-height:.78;letter-spacing:-.065em;margin-top:1rem;font-variant-numeric:tabular-nums}
.since-copy{max-width:40ch;font-size:clamp(1.12rem,.6vw + .95rem,1.35rem);line-height:1.5;padding-bottom:.6rem;text-wrap:pretty}
.ruler{margin-top:clamp(2.5rem,6vw,4.5rem);position:relative;padding-top:1.9rem}
.ruler-span{position:absolute;left:0;right:calc(100% / var(--n,14));top:.55rem;height:1px;background:var(--deep-fg)}
.ruler-span::before,.ruler-span::after{content:"";position:absolute;top:-4px;width:1px;height:9px;background:var(--deep-fg)}
.ruler-span::before{left:0}.ruler-span::after{right:0}
.ruler-span span{position:absolute;left:50%;top:-1.55rem;transform:translateX(-50%);font-family:var(--font-mono);font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:var(--deep-soft);background:var(--deep-bg);padding-inline:.6rem;white-space:nowrap}
.ruler ol{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(var(--n,14),minmax(0,1fr))}
.ruler li{border-left:1px solid var(--deep-line);padding:1.1rem 0 0 .45rem;font-family:var(--font-mono);font-size:.64rem;letter-spacing:.04em;color:var(--deep-soft);font-variant-numeric:tabular-nums}
.ruler li:first-child,.ruler li:last-child{color:var(--deep-fg)}
@media (max-width:700px){.ruler li:nth-child(even){color:transparent}.ruler li{font-size:.56rem;padding-left:.25rem}}
.principles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(1.75rem,4vw,4rem);margin-top:clamp(3.5rem,8vw,6.5rem);border-top:1px solid var(--deep-line);padding-top:clamp(1.75rem,3vw,2.5rem)}
.principles h3{font-size:clamp(1.55rem,2.3vw,2.1rem);letter-spacing:-.03em;margin-bottom:.85rem}
.principles p{color:var(--deep-soft);max-width:36ch;text-wrap:pretty}
@media (max-width:900px){.since-top,.principles{grid-template-columns:minmax(0,1fr)}}

/* ---------- contact: the brand block ---------- */
/* ---------- contact: the page resurfaces onto paper; the footer is a strip of brand ultramarine ---------- */
.contact{position:relative;background:var(--paper);color:var(--ink)}
.waterline{display:block;width:100%;height:clamp(72px,9vw,120px)}
.contact > .wrap{padding-top:clamp(4rem,9vw,7.5rem)}
.c-mark{display:block;width:clamp(230px,56vw,820px);max-width:100%;height:auto;fill:var(--accent);margin-bottom:clamp(3.5rem,8vw,6.5rem)}
.c-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:clamp(2.5rem,6vw,7rem)}
.contact h2{font-size:clamp(2.5rem,5.4vw,4.8rem);margin-top:1rem}
.c-lede{margin-top:1.4rem;max-width:38ch;font-size:clamp(1.1rem,.55vw + .95rem,1.3rem);line-height:1.5}
.mail{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem 1rem;margin-top:2.25rem}
.mail span{font-family:var(--font-display);font-size:clamp(1.25rem,2.1vw,1.7rem);letter-spacing:-.01em;user-select:all;-webkit-user-select:all}
.chip-btn{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;background:none;color:var(--ink);border:1px solid var(--line-strong);border-radius:999px;padding:.45rem .85rem;cursor:pointer;transition:background-color .3s,color .3s,border-color .3s}
.chip-btn:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.mail-note{flex-basis:100%;font-family:var(--font-mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);min-height:1.2em}
.brief{position:relative;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.6rem 1.5rem;align-content:start}
.field{display:grid;gap:.35rem;min-width:0}
.field.full{grid-column:1 / -1}
.field label,.brief legend{font-family:var(--font-mono);font-size:.64rem;letter-spacing:.15em;text-transform:uppercase;color:var(--ink-soft)}
.field input,.field textarea{width:100%;background:transparent;border:0;border-bottom:1px solid var(--line-strong);color:var(--ink);font-family:var(--font-display);font-size:1.12rem;padding:.55rem 0;border-radius:0;outline:none;transition:border-color .3s}
.field textarea{resize:vertical;min-height:6.5rem;line-height:1.45}
.field input:focus,.field textarea:focus{border-bottom-color:var(--accent)}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-soft);opacity:.7}
.brief fieldset{grid-column:1 / -1;border:0;margin:0;padding:0;min-width:0}
.chips{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.7rem}
.chips label{position:relative;cursor:pointer}
.chips input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.chips span{display:inline-block;font-family:var(--font-display);font-size:.95rem;border:1px solid var(--line-strong);border-radius:999px;padding:.4rem .95rem;transition:background-color .3s,color .3s,border-color .3s}
.chips input:checked + span{background:var(--accent);color:var(--paper);border-color:var(--accent)}
.chips input:focus-visible + span{outline:2px solid var(--accent);outline-offset:2px}
.hp{position:absolute;left:-10000px;top:auto;width:1px;height:1px;overflow:hidden}
.brief-foot{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:1rem 1.5rem}
.btn[disabled]{opacity:.6;cursor:progress;transform:none}
.status{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.08em;line-height:1.6;color:var(--ink-soft);max-width:44ch}
.status[data-state="ok"]{color:var(--accent)}
.status[data-state="error"]{color:var(--ink)}
@media (max-width:900px){.c-grid{grid-template-columns:minmax(0,1fr)}}
@media (max-width:560px){.brief{grid-template-columns:minmax(0,1fr)}}
.foot-band{margin-top:clamp(5rem,10vw,8rem);background:var(--brand);color:var(--foam)}
.foot-band ::selection{background:var(--foam);color:var(--brand)}
.foot-band :focus-visible{outline-color:var(--foam)}
.foot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.75rem 2rem;padding-top:1.5rem;padding-bottom:calc(1.6rem + env(safe-area-inset-bottom,0px));font-family:var(--font-mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase}
.foot a{text-decoration:none;opacity:.85}
.foot a:hover{opacity:1}
.foot sup{font-size:.8em;vertical-align:.45em}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
}