/* breathmark.team
   Plain, fast, no dependencies. Near-black, warm off-white, one muted accent.
   Deliberately no logo or glyph: a mark used everywhere stops being a mark. */

:root {
  --bg: #0b0c0e;
  --panel: #14161a;
  --ink: #e8e6e1;
  --dim: #9a9da4;
  --line: #23262c;
  --accent: #7fb3a8;
  --accent-dim: #4d6f68;
  --max: 46rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  letter-spacing: 0.005em;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 3.5rem 1.25rem 5rem; }

a { color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--accent-dim); }
a:hover { border-bottom-color: var(--accent); }

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 0.6rem; }
h1 { font-size: 2.1rem; font-weight: 650; }
h2 { font-size: 1.25rem; font-weight: 600; margin-top: 3rem; }
h3 { font-size: 1.05rem; font-weight: 500; color: var(--dim); margin-top: 0.4rem; }

p { margin: 0 0 1.05rem; }
strong { font-weight: 620; }

.lede { font-size: 1.05rem; }

.sub { color: var(--dim); }

hr { border: 0; border-top: 1px solid var(--line); margin: 3rem 0; }

ul { padding-left: 1.15rem; margin: 0 0 1.05rem; }
li { margin: 0 0 0.7rem; }

.top { display: flex; gap: 1.25rem; align-items: baseline; justify-content: space-between; flex-wrap: wrap; margin-bottom: 3.5rem; }
.brand { font-weight: 650; letter-spacing: 0.02em; }
.top nav a { margin-left: 1.1rem; border-bottom: 0; color: var(--dim); }
.top nav a:hover { color: var(--ink); }

.cta { display: flex; gap: 0.75rem; flex-wrap: wrap; margin: 2rem 0 0; }
.btn {
  display: inline-block; padding: 0.7rem 1.15rem; border: 1px solid var(--line);
  border-radius: 8px; background: var(--panel); color: var(--ink); border-bottom: 1px solid var(--line);
}
.btn:hover { border-color: var(--accent-dim); }
.btn.primary { background: var(--accent); color: #0b0c0e; border-color: var(--accent); font-weight: 600; }

.card { border: 1px solid var(--line); border-radius: 10px; padding: 1.1rem 1.25rem; margin: 0 0 0.9rem; background: var(--panel); }
.card p:last-child { margin-bottom: 0; }

.foot { border-top: 1px solid var(--line); margin-top: 3.5rem; padding-top: 1.25rem; color: var(--dim); font-size: 0.95rem; display: flex; gap: 1.5rem; flex-wrap: wrap; }
.foot a { color: var(--dim); border-bottom-color: var(--line); }
.foot a:hover { color: var(--ink); }

.todo { color: var(--accent-dim); }

@media (max-width: 30rem) {
  .wrap { padding: 2.5rem 1rem 4rem; }
  h1 { font-size: 1.75rem; }
  .top nav { display: flex; gap: 0.9rem; }
  .top nav a { margin-left: 0; }
}