/* "How it is built" — an engineering note, not a brochure. */
.how { background: #fbf9f5; }
.how-wrap { max-width: 46rem; margin: 0 auto; padding: 0 1.1rem 4rem; }
.how h1 { font-family: var(--font-display); font-size: clamp(1.6rem, 4.5vw, 2.3rem); margin: 1.4rem 0 .4rem; }
.how h2 { font-family: var(--font-display); font-size: 1.35rem; margin: 2rem 0 .6rem; }
.how h3 { font-size: 1rem; margin: 1.2rem 0 .3rem; }
.how p, .how li { color: #3c3730; }
.how .lede { font-size: 1.08rem; color: #4a443c; }
.how code { font-family: var(--font-mono); font-size: .88em; background: #f0ece2; padding: .1em .35em; border-radius: 4px; }
.how figure { margin: 1.2rem 0; }
.how figcaption { font-size: .82rem; color: var(--muted); margin-top: .4rem; }
.how ul { padding-left: 1.1rem; }
.how li { margin-bottom: .35rem; }

.num-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr)); gap: .7rem; margin: 1rem 0; }
.num { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: .8rem; }
.num b { display: block; font-size: 1.45rem; font-variant-numeric: tabular-nums; line-height: 1.1; }
.num span { font-size: .74rem; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.num small { display: block; color: var(--muted); font-size: .78rem; margin-top: .25rem; }

.compare { width: 100%; border-collapse: collapse; font-size: .92rem; margin: .8rem 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.compare th, .compare td { padding: .55rem .7rem; text-align: left; border-bottom: 1px solid #f0ebe0; }
.compare th { font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.compare tr:last-child td { border-bottom: 0; }
.compare .win { color: var(--olive); font-weight: 700; }

.callout { background: #f4f7ef; border-left: 3px solid var(--olive); border-radius: 0 10px 10px 0; padding: .8rem 1rem; margin: 1.1rem 0; }
.callout.warn { background: #fdf5ec; border-left-color: var(--gold); }
.callout h3 { margin-top: 0; }

.diagram { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem; overflow-x: auto; }
.diagram svg { min-width: 34rem; width: 100%; height: auto; display: block; }

.how-nav { display: flex; gap: .5rem; flex-wrap: wrap; padding: 1rem 0 0; }
.how-nav a { text-decoration: none; border: 1px solid var(--line); border-radius: 999px; padding: .4rem .8rem; font-size: .86rem; font-weight: 600; background: #fff; }