/* PlainShelter public site. Look (owner-directed, 2026-10-23): white top bar with dark-green brand and a green pill, pale mint hero with a heavy dark-green headline,
   blue tagline, pale-blue chips, dark-green footer; same colour and type character as nutrisize.health, with our own CSS, class names and layout. */
:root {
  --paper: #f4f8f5; --mist: #ffffff; --ink: #1b2a22; --ink2: #44514a; --ink3: #5b6a62; --line: #dfe8e2;
  --pine: #1b3b2f; --leaf: #3b8b5a; --leaf-deep: #2b7048; --leaf-tint: #e3f1e8; --cta: #2f7d52; --blue: #214b87; --chip: #e7eef8;
  --sky: #1268b3; --sky-tint: #e5f0fa; --foot: #1d3d30;
  --ember: #c2531a; --glow: #d9962b; --radius: 1rem; --shadow: 0 8px 24px rgba(27,59,47,.14);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 1.125rem/1.65 'Inter', -apple-system, 'Segoe UI', Roboto, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--blue); }
:focus-visible { outline: 3px solid var(--leaf); outline-offset: 3px; border-radius: .4rem; }
.shell { width: min(72rem, 100% - 3rem); margin-inline: auto; }

/* top bar */
.topbar { position: sticky; top: 0; z-index: 40; background: #fff; border-bottom: 1px solid var(--line); }
.topbar-in { display: flex; align-items: center; flex-wrap: wrap; gap: .5rem 1.6rem; padding-block: .8rem; }
.mark { display: flex; align-items: center; gap: .7rem; color: var(--pine); font-weight: 800; font-size: 1.4rem; letter-spacing: -.02em; text-decoration: none; }
.mark img { width: 2.6rem; height: 2.6rem; border-radius: .65rem; }
.tb-nav { display: flex; flex-wrap: wrap; gap: .25rem 1.8rem; margin-inline: auto; }
.tb-nav a { color: #34443b; text-decoration: none; font-size: 1.1rem; font-weight: 500; }
.tb-nav a:hover { color: var(--leaf-deep); }
.tb-cta { background: var(--cta); color: #fff; padding: .7rem 1.4rem; border-radius: 999px; font-weight: 700; font-size: 1.05rem; text-decoration: none; }
.tb-cta:hover { background: var(--leaf-deep); }

/* intro */
.hero { background: linear-gradient(160deg, #f4f8f5 55%, #e9f0f8 100%); border-bottom: 1px solid var(--line); }
.intro { display: block; text-align: center; padding-block: 4.5rem 3rem; }
.intro h1 { margin: 0 auto 1.2rem; max-width: 16ch; font-size: clamp(2.8rem, 8vw, 5.2rem); font-weight: 800; line-height: 1.04; letter-spacing: -.04em; color: var(--pine); }
.intro h1 em { display: block; font-style: normal; color: var(--leaf); }
.tagline { margin: 0 0 1.4rem; font-size: clamp(1.3rem, 3vw, 1.9rem); font-weight: 650; color: var(--blue); letter-spacing: -.01em; }
.lede { font-size: 1.3rem; color: var(--ink2); max-width: 46rem; margin: 0 auto 1.4rem; }
.chips { display: flex; flex-wrap: wrap; justify-content: center; gap: .8rem; margin: 1.6rem 0; padding: 0; list-style: none; }
.chips li { background: var(--chip); color: var(--blue); font-weight: 700; font-size: 1.15rem; padding: .7rem 1.6rem; border-radius: 999px; }
.soon { display: inline-block; margin: .4rem 0 1.5rem; padding: .7rem 1.2rem; border: 1.5px dashed var(--ink3); border-radius: .8rem; color: var(--ink2); font-weight: 600; font-size: 1rem; background: #fff; }
.facts { display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem 1.6rem; margin: 0; padding: 0; list-style: none; color: var(--ink2); font-size: 1rem; }
.facts li::before { content: ""; display: inline-block; width: .5rem; height: .5rem; margin-right: .5rem; border-radius: 50%; background: var(--leaf); }
.ladder-wrap { padding-block: 2.5rem 3rem; }
.stairs { margin: 0 auto; padding: 0; list-style: none; display: grid; gap: .75rem; max-width: 40rem; }
.stairs li { padding: 1rem 1.2rem; border: 1px solid var(--line); border-left: .45rem solid var(--leaf); border-radius: var(--radius); background: #fff; }
.stairs li:nth-child(2) { margin-left: 1rem; border-left-color: var(--sky); }
.stairs li:nth-child(3) { margin-left: 2rem; border-left-color: var(--glow); }
.stairs li:nth-child(4) { margin-left: 3rem; border-left-color: var(--ember); }
.stairs b { display: block; font-size: 1.25rem; color: var(--pine); }
.stairs span { font-size: 1rem; color: var(--ink2); }
.stairs em { font-style: normal; font-weight: 700; font-size: .7rem; letter-spacing: .06em; text-transform: uppercase; color: var(--leaf-deep); }
.eyebrow { margin: 0; font-size: .8rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--leaf); }
@media (max-width: 56rem) { .intro { padding-top: 2.5rem; } }

/* bands */
.band { padding-block: 3.2rem; }
.band.mist { background: #fff; border-block: 1px solid var(--line); }
.band h2 { margin: .3rem 0 .6rem; font-size: clamp(1.7rem, 3.6vw, 2.4rem); line-height: 1.15; letter-spacing: -.02em; color: var(--pine); }
.band .sub { margin: 0 0 1.8rem; max-width: 42rem; color: var(--ink2); font-size: 1.1rem; }
.how { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; margin: 0; padding: 0; list-style: none; counter-reset: s; }
.how li { counter-increment: s; border-top: 3px solid var(--leaf); padding-top: 1rem; }
.how li::before { content: counter(s); display: block; font-size: 2rem; font-weight: 800; color: var(--leaf); line-height: 1; margin-bottom: .5rem; }
.how h3 { margin: 0 0 .35rem; font-size: 1.15rem; color: var(--pine); }
.how p { margin: 0; color: var(--ink2); font-size: .98rem; }
@media (max-width: 56rem) { .how { grid-template-columns: 1fr; } }
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr)); gap: .8rem; margin: 0 0 2rem; padding: 0; list-style: none; }
.tiles li { padding: .8rem 1rem; background: #fff; border: 1px solid var(--line); border-radius: .8rem; font-weight: 650; color: var(--pine); }
.tiles small { display: block; margin-top: .15rem; font-weight: 500; font-size: .8rem; color: var(--ink3); }
.sample { background: #fff; border: 1px solid var(--line); border-radius: 1.2rem; padding: 1.4rem 1.6rem; max-width: 52rem; }
.sample h3 { margin: 0 0 .6rem; font-size: 1.4rem; color: var(--pine); }
.sample h4 { margin: 1.1rem 0 .2rem; font-size: 1rem; color: var(--pine); }
.sample p, .sample li { color: var(--ink2); font-size: .98rem; }
.sample ul { padding-left: 1.3rem; margin: .4rem 0; }
.diagram { margin: .8rem 0; }
.diagram svg { display: block; width: 100%; max-width: 40rem; height: auto; margin-inline: auto; border: 1px solid var(--line); border-radius: .9rem; }
.diagram figcaption { margin-top: .4rem; font-size: .82rem; color: var(--ink3); }
.cite { font-size: .85rem; color: var(--ink3); }
.sources { background: var(--foot); color: #e3f5ec; border-radius: 1.4rem; padding: 2.4rem clamp(1.2rem, 4vw, 3rem); }
.sources h2 { color: #fff; margin-top: 0; }
.sources p { max-width: 44rem; margin: .6rem 0 0; color: #cfe6db; }

.band h3.mod { margin: 2rem 0 .3rem; font-size: 1.4rem; color: var(--pine); }

/* inner pages */
.page { padding-block: 2.5rem 4rem; max-width: 46rem; }
.page h1 { margin: 0 0 .3rem; font-size: clamp(1.8rem, 4vw, 2.5rem); color: var(--pine); letter-spacing: -.02em; }
.page .meta { color: var(--ink3); font-size: .9rem; margin: 0 0 1.5rem; }
.page p, .page li { color: var(--ink2); }
.note { background: var(--sky-tint); border: 1px solid #cbe1f5; color: #0b4f8a; border-radius: .9rem; padding: 1rem 1.2rem; margin: 1rem 0; }
.crumb { font-size: .85rem; color: var(--ink3); margin-bottom: 1rem; }

/* footer: always on screen (sticky), compact bar that expands with More / Less */
.feedback { text-align: center; padding: 3rem 0 1.6rem; background: var(--paper); }
.feedback a { display: inline-block; background: var(--leaf-tint); color: var(--leaf-deep); font-weight: 800; letter-spacing: .08em; text-transform: uppercase; font-size: .95rem; padding: .75rem 1.6rem; border-radius: 999px; text-decoration: none; }
.foot { position: sticky; bottom: 0; z-index: 45; background: var(--foot); color: #b9cfc3; font-size: 1.05rem; box-shadow: 0 -6px 18px rgba(20,40,30,.18); }
.foot-bar { display: flex; align-items: center; flex-wrap: wrap; gap: .4rem 1.6rem; padding-block: .85rem; }
.foot-bar nav { display: flex; flex-wrap: wrap; gap: .3rem 1.6rem; }
.foot a { color: #fff; font-weight: 600; text-decoration: none; }
.foot a:hover { text-decoration: underline; text-underline-offset: 4px; }
.foot-copy { margin-left: auto; color: #b9cfc3; }
.foot-toggle { background: transparent; border: 0; color: #fff; font: inherit; font-weight: 700; cursor: pointer; padding: .3rem .2rem; }
.foot-toggle:hover { text-decoration: underline; text-underline-offset: 4px; }
.foot-more { max-height: 55vh; overflow-y: auto; border-top: 1px solid rgba(255,255,255,.14); padding-block: 1.2rem 1.4rem; text-align: center; }
.foot-more[hidden] { display: none; }
.foot-more nav { display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem 1.8rem; margin-bottom: 1rem; }
.foot-more p { margin: .45rem auto 0; max-width: 52rem; }
.foot-fine { font-size: .85rem; color: #8fab9d; }