/* The Rogue Wave: deep-sea palette, dramatic serif display, one orange crest.
   The whole site is dark; there is no light theme. */

:root {
  color-scheme: dark;
  --paper: #08141f;
  --paper-2: #0d1d2b;
  --card: #0f2132;
  --ink: #e8f0f3;
  --ink-2: #b4c5d0;
  --ink-3: #8aa0af;
  --rule: #1f3445;
  --accent: #5cc4e0;
  --accent-ink: #04202b;
  --accent-soft: #123446;
  --accent-text: #8fd8ec;
  --signal: #ff8a4c;
  --lost: #ff8f84;
  --shadow: 0 1px 0 rgba(255,255,255,.03), 0 14px 34px -20px rgba(0,0,0,.85);
  --display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --serif: "Source Serif 4", "Iowan Old Style", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --measure: 38rem;
  --wide: 72rem;
  /* the hero and closing band use the deepest sea */
  --sea-0: #050f18;
  --sea-1: #0a1f30;
  --sea-2: #0f3047;
  --foam: #e8f1f4;
  --crest: #ff8a4c;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--serif); font-size: 1.2rem; line-height: 1.62;
  text-rendering: optimizeLegibility; font-optical-sizing: auto;
}
img, svg, canvas { max-width: 100%; display: block; }
a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
::selection { background: var(--accent-soft); color: var(--ink); }
.skip { position: absolute; left: -999px; top: 0; background: var(--ink); color: var(--paper); padding: .5rem 1rem; z-index: 100; }
.skip:focus { left: 1rem; top: 1rem; }

.wrap { width: min(var(--wide), calc(100% - 2.4rem)); margin-inline: auto; }
.measure { max-width: var(--measure); }
h1, h2, h3 { font-family: var(--display); font-weight: 600; line-height: 1.1; letter-spacing: -.015em; margin: 0 0 .5em; }
h2 { font-size: clamp(2rem, 4.4vw, 3.1rem); }
h3 { font-size: 1.45rem; }
p { margin: 0 0 1em; }
.eyebrow { font-family: var(--mono); font-size: .76rem; letter-spacing: .16em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 1rem; }
.lede { font-size: 1.42rem; line-height: 1.5; color: var(--ink-2); }
.small { font-size: .95rem; color: var(--ink-3); }
.mono { font-family: var(--mono); }

/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--paper) 86%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--rule); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 3.6rem; }
.brand { display: flex; align-items: center; gap: .6rem; color: var(--ink); text-decoration: none; font-family: var(--display); font-size: 1.2rem; font-weight: 600; letter-spacing: -.01em; }
.brand svg { width: 2rem; height: 1.4rem; }
.nav ul { display: flex; gap: 1.5rem; list-style: none; margin: 0; padding: 0; align-items: center; }
.nav a.link { color: var(--ink-2); text-decoration: none; font-size: 1rem; }
.nav a.link:hover, .nav a.link[aria-current="page"] { color: var(--ink); text-decoration: underline; text-underline-offset: 6px; }
.menu-btn { display: none; background: none; border: 1px solid var(--rule); color: var(--ink); border-radius: 6px; padding: .35rem .7rem; font: inherit; font-size: 1rem; cursor: pointer; }
@media (max-width: 700px) {
  .menu-btn { display: inline-block; }
  .nav ul { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: flex-start; background: var(--paper); border-bottom: 1px solid var(--rule); padding: 1rem 1.2rem; gap: .9rem; }
  .nav ul.open { display: flex; }
}

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: .5rem; font: inherit; font-size: 1.05rem; padding: .75rem 1.4rem; border-radius: 4px; border: 1px solid currentColor; text-decoration: none; cursor: pointer; color: var(--ink); background: transparent; transition: transform .15s, background .15s, color .15s; }
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn.primary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn.crest { background: var(--crest); color: #1a0d05; border-color: var(--crest); font-weight: 600; }
.btn.crest:hover { background: #ff9d68; }
.btn-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.6rem; }

/* ---------- hero (always the deep sea) ---------- */
.hero { position: relative; overflow: hidden; color: var(--foam); background: radial-gradient(120% 90% at 70% 0%, var(--sea-2) 0%, var(--sea-1) 45%, var(--sea-0) 100%); isolation: isolate; }
.hero::after { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(0deg, rgba(255,255,255,.015) 0 1px, transparent 1px 3px); pointer-events: none; z-index: -1; }
.hero-in { padding: clamp(3.5rem, 9vw, 7rem) 0 0; }
.hero .eyebrow { color: #8fb3c4; }
.hero .kick { font-family: var(--display); font-weight: 400; font-style: italic; font-size: clamp(1.4rem, 3vw, 2rem); color: #a9c4d1; letter-spacing: 0; margin: 0 0 .1em; }
.hero h1 { font-size: clamp(3.4rem, 11vw, 8.2rem); font-weight: 700; line-height: .92; letter-spacing: -.035em; margin: 0 0 .28em; color: #fff; }
.hero h1 em { font-style: normal; color: var(--crest); }
.hero .lede { color: #c3d7e0; max-width: 34rem; }
.hero .btn { color: var(--foam); }
.hero .btn.crest { color: #1a0d05; }
.hero .btn:not(.crest):hover { background: rgba(255,255,255,.08); }
.wave-box { position: relative; margin-top: clamp(1.5rem, 4vw, 3rem); height: clamp(180px, 28vw, 300px); }
.wave-box canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.wave-cap { position: absolute; left: 0; bottom: .8rem; font-family: var(--mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: #6f93a5; }
@media (max-width: 700px) {
  .wave-box { height: auto; }
  .wave-box canvas { position: relative; display: block; height: 170px; }
  .wave-cap { position: static; display: block; margin-top: .7rem; font-size: .66rem; letter-spacing: .08em; line-height: 1.5; }
}
.hero .wrap { position: relative; }

/* ---------- three numbers ---------- */
.numbers { background: var(--sea-0); color: var(--foam); border-top: 1px solid rgba(255,255,255,.08); }
.numbers .wrap { display: grid; grid-template-columns: repeat(3, 1fr); }
.num { padding: 2.2rem 1.6rem 2.4rem 0; }
.num + .num { padding-left: 1.6rem; border-left: 1px solid rgba(255,255,255,.1); }
.num b { display: block; font-family: var(--display); font-weight: 700; font-size: clamp(2.6rem, 6vw, 4.2rem); line-height: 1; letter-spacing: -.03em; color: #fff; }
.num b i { font-style: normal; color: var(--crest); }
.num span { display: block; margin-top: .6rem; font-size: 1.02rem; line-height: 1.4; color: #9fbac8; max-width: 17rem; }
@media (max-width: 760px) { .numbers .wrap { grid-template-columns: 1fr; } .num, .num + .num { padding: 1.4rem 0; border-left: 0; } .num + .num { border-top: 1px solid rgba(255,255,255,.1); } }

/* ---------- sections ---------- */
section { padding: clamp(3.4rem, 8vw, 6rem) 0; }
section.alt { background: var(--paper-2); border-block: 1px solid var(--rule); }
.section-head { margin-bottom: 2.2rem; max-width: 46rem; }
.cols-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 2.6rem; }
@media (max-width: 860px) { .cols-2 { grid-template-columns: 1fr; gap: 1.2rem; } }
.dropcap::first-letter { font-family: var(--display); float: left; font-size: 4.6em; line-height: .8; padding: .06em .1em 0 0; color: var(--signal); font-weight: 700; }

/* ---------- the law ---------- */
.formula { font-family: var(--display); font-weight: 600; font-size: clamp(3.6rem, 12vw, 7.4rem); line-height: 1; letter-spacing: -.03em; margin: .1em 0 .2em; }
.formula i { font-style: italic; font-weight: 500; }
.formula sup { font-size: .55em; vertical-align: .55em; color: var(--signal); font-style: italic; }
.formula .approx { font-weight: 400; color: var(--ink-3); padding: 0 .12em; }
.law-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 3rem; align-items: center; }
@media (max-width: 900px) { .law-grid { grid-template-columns: 1fr; gap: 1.6rem; } }
dl.terms { margin: 1.4rem 0 0; display: grid; grid-template-columns: auto 1fr; gap: .5rem 1.1rem; }
dl.terms dt { font-family: var(--display); font-style: italic; font-size: 1.5rem; color: var(--signal); line-height: 1.2; }
dl.terms dd { margin: 0; color: var(--ink-2); }
.chart { background: var(--card); border: 1px solid var(--rule); border-radius: 10px; padding: 1.1rem 1.1rem .8rem; box-shadow: var(--shadow); }
.chart svg { width: 100%; height: auto; overflow: visible; }
.chart .grid { stroke: var(--rule); stroke-width: 1; }
.chart .axis { stroke: var(--ink-3); stroke-width: 1.2; }
.chart .fit { stroke: var(--ink-3); stroke-width: 1.6; stroke-dasharray: 5 5; fill: none; }
.chart .pt { fill: var(--signal); stroke: var(--card); stroke-width: 2; }
.chart .tick { font-family: var(--mono); font-size: 11px; fill: var(--ink-3); }
.chart .lab { font-family: var(--mono); font-size: 11.5px; fill: var(--ink-2); letter-spacing: .04em; }
.chart .note { font-family: var(--display); font-style: italic; font-size: 17px; fill: var(--signal); }
.chart figcaption { font-size: .92rem; color: var(--ink-3); margin: .5rem .3rem 0; line-height: 1.45; }

/* ---------- more laws ---------- */
.more-laws { margin-top: 3.8rem; }
.more-laws h3 { font-size: 1.7rem; }
.laws { margin-top: 1rem; border-bottom: 1px solid var(--rule); }
.law { display: grid; grid-template-columns: 1fr auto; gap: 1rem 1.6rem; padding: 1.5rem 0; border-top: 1px solid var(--rule); align-items: start; }
.law h4 { font-family: var(--display); font-weight: 600; font-size: 1.35rem; margin: 0 0 .4rem; letter-spacing: -.01em; }
.law h4 .small { font-family: var(--mono); font-weight: 400; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; margin-left: .5rem; }
.law-statement { font-size: 1.2rem; line-height: 1.5; margin: 0 0 .5rem; }
.law .small { margin: 0; }
.law .tag { margin: .3rem 0 0; }
.edges { margin: 1.6rem 0 0; max-width: 46rem; color: var(--ink-2); }
@media (max-width: 700px) { .law { grid-template-columns: 1fr; } }

/* ---------- chapters ---------- */
.parts { display: grid; }
.part { display: grid; grid-template-columns: 15rem 1fr; gap: 2rem; padding: 1.7rem 0; border-top: 1px solid var(--rule); }
.part:last-child { border-bottom: 1px solid var(--rule); }
.part .range { font-family: var(--mono); font-size: .76rem; letter-spacing: .14em; text-transform: uppercase; color: var(--signal); }
.part h3 { margin: .3rem 0 0; font-size: 1.7rem; }
@media (max-width: 800px) { .part { grid-template-columns: 1fr; gap: .6rem; } }
.part ol { margin: 0; padding: 0; list-style: none; }
.part details { border-radius: 6px; }
.part summary { display: flex; align-items: baseline; gap: .6rem; padding: .35rem .6rem; font-size: 1.1rem; cursor: pointer; list-style: none; border-radius: 6px; color: var(--ink-2); }
.part summary::-webkit-details-marker { display: none; }
.part summary b { font-family: var(--mono); font-weight: 400; font-size: .8rem; color: var(--ink-3); min-width: 1.4rem; }
.part summary:hover { background: var(--paper-2); color: var(--ink); }
.part summary::after { content: "+"; margin-left: auto; padding-left: 1rem; font-family: var(--mono); color: var(--ink-3); }
.part details[open] { background: var(--card); box-shadow: var(--shadow); }
.part details[open] summary { color: var(--ink); font-weight: 600; }
.part details[open] summary::after { content: "\2212"; color: var(--signal); }
.chap-body { padding: .1rem 1rem 1.1rem 2.8rem; }
.chap-body p { font-size: 1.06rem; line-height: 1.55; color: var(--ink-2); margin: 0 0 .65rem; }
.chap-body a { font-family: var(--mono); font-size: .82rem; letter-spacing: .04em; }
.tag { display: inline-block; font-family: var(--mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent-text); background: var(--accent-soft); border-radius: 999px; padding: .12rem .6rem; margin-right: .4rem; vertical-align: .1em; }

/* ---------- closing band ---------- */
.closing { background: radial-gradient(100% 140% at 20% 0%, var(--sea-2) 0%, var(--sea-1) 50%, var(--sea-0) 100%); color: var(--foam); text-align: center; }
.closing h2 { color: #fff; }
.closing p { color: #b9cfda; max-width: 34rem; margin-inline: auto; }
.closing .btn-row { justify-content: center; }
.closing .btn { color: var(--foam); }
.closing .btn.crest { color: #1a0d05; }
.closing .support { margin-top: 1.6rem; font-size: 1rem; color: #9fbac8; }
.closing .support a { color: var(--crest); }

/* ---------- press ---------- */
.card { background: var(--card); border: 1px solid var(--rule); border-radius: 10px; padding: 1.4rem 1.5rem; box-shadow: var(--shadow); }
dl.facts { display: grid; grid-template-columns: 9rem 1fr; gap: .5rem 1rem; font-size: 1.05rem; margin: 0; }
dl.facts dt { font-family: var(--mono); font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); padding-top: .3rem; }
dl.facts dd { margin: 0; }

.reveal { opacity: 0; transform: translateY(14px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--rule); padding: 3rem 0 3.6rem; background: var(--paper-2); font-size: 1rem; color: var(--ink-2); }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 2rem; }
@media (max-width: 800px) { .foot-grid { grid-template-columns: 1fr; } }
.site-footer h4 { font-family: var(--mono); font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 .8rem; font-weight: 500; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { padding: .15rem 0; }
.site-footer a { color: var(--ink-2); }
.fine { margin-top: 2rem; font-size: .9rem; color: var(--ink-3); }

@media print { .site-header, .site-footer, .btn-row { display: none !important; } body { background: #fff; color: #000; font-size: 11.5pt; } .hero, .numbers, .closing { background: #fff !important; color: #000 !important; } }