/* SnowWind V3 — open terrain, quiet reading surfaces. Public site only; tool HUDs stay local. */
html[data-design="light-alpine-v3"] {
  --max: 1320px;
  --gutter: clamp(1.25rem, 5vw, 4.5rem);
  --track-display: -.045em;
  --track-readout: .08em;
}
[data-design="light-alpine-v3"] body::before,
[data-design="light-alpine-v3"] body::after { display: none; }
[data-design="light-alpine-v3"] body { -webkit-font-smoothing: antialiased; }
html[lang="en"][data-design="light-alpine-v3"] body { font-family: "Inter", var(--font); }
[data-design="light-alpine-v3"] [data-reveal] { opacity: 1; transform: none; }
[data-design="light-alpine-v3"] :is(.bc-header, .gp-site-header) {
  background: var(--glass);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  box-shadow: none;
}
[data-design="light-alpine-v3"] :is(.bc-header__bar, .gp-site-header__bar) { max-width: 1440px; min-height: 68px; padding-inline: var(--gutter); }
[data-design="light-alpine-v3"] .bc-brand { font-weight: 600; font-size: 1.15rem; }
[data-design="light-alpine-v3"] :is(.bc-menu summary, .gp-site-menu summary) { min-height: 44px; display: flex; align-items: center; }
[data-design="light-alpine-v3"] :is(.bc-btn, .btn) { min-height: 48px; font-weight: 500; box-shadow: none; border-width: 1px; }
[data-design="light-alpine-v3"] :is(.bc-h1, .h-hero) { font-size: clamp(2rem, 4.3vw, 3.6rem); font-weight: 500; line-height: 1.12; letter-spacing: -.045em; }
[data-design="light-alpine-v3"] :is(.bc-h2, .home-knowledge h2) { font-weight: 500; line-height: 1.2; }
[data-design="light-alpine-v3"] .bc-eyebrow { font-size: .75rem; letter-spacing: .08em; }
[data-design="light-alpine-v3"] :is(.bc-card, .card) { padding: 1.6rem; box-shadow: none; }
[data-design="light-alpine-v3"] :is(.bc-card__name, .bc-stat__v) { font-weight: 500; }
[data-design="light-alpine-v3"] :is(.bc-stat__k, .bc-cond__k) { font-size: .75rem; }
[data-design="light-alpine-v3"] .bc-footer { background: transparent; }
[data-design="light-alpine-v3"] .bc-footer__heading { font-size: .75rem; }
[data-design="light-alpine-v3"] .bc-footer__groups { gap: 2rem; }
[data-design="light-alpine-v3"] .bc-lead { font-size: 1rem; line-height: 1.8; }
[data-design="light-alpine-v3"] .alpine-map-bleed { max-width: none; padding-inline: 0; position: relative; }
[data-design="light-alpine-v3"] .alpine-map-bleed .bc-map { border: 0; border-radius: 0; height: clamp(440px, 72svh, 860px); }
.alpine-map-next { display: none; }
#route-profile, #today { scroll-margin-top: 5rem; }
/* A terrain canvas consumes one-finger gestures. Keep a labelled 48px native-scroll rail
   beside embedded maps so a short/touch viewport can always leave the scene. */
@media(max-width:900px), (max-height:520px), (hover:none) {
  [data-design="light-alpine-v3"] .alpine-map-bleed { padding-right: 48px; }
  .alpine-map-next { display: flex; align-items: center; justify-content: center; gap: 1rem; position: absolute; inset-block: 0; right: 0; width: 48px; padding-block: 1rem; writing-mode: vertical-rl; font-size: .875rem; color: var(--text-dim); background: var(--bg); touch-action: pan-y; }
}
[data-design="light-alpine-v3"] .route-heading .bc-stats { gap: 1.5rem 3rem; margin-block: 1.8rem; }
[data-design="light-alpine-v3"] .route-heading .bc-stat__v { font-size: 1.6rem; }
[data-design="light-alpine-v3"] .alpine-reading-section { display: grid; grid-template-columns: minmax(180px,1fr) minmax(0,2fr); column-gap: 3rem; padding-bottom: 4rem; }
[data-design="light-alpine-v3"] .alpine-reading-section > h2 { font-size: 1.25rem; line-height: 1.5; }
[data-design="light-alpine-v3"] .alpine-reading-section > div { grid-column: 2; font-size: 1rem; line-height: 1.9; }
@media(max-width:760px) {
  [data-design="light-alpine-v3"] .alpine-reading-section { grid-template-columns: 1fr; gap: 1rem; }
  [data-design="light-alpine-v3"] .alpine-reading-section > div { grid-column: 1; }
  [data-design="light-alpine-v3"] .route-heading .bc-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
}

/* Public guide catalogue: small, consistent labels; expansive photography; quiet facts. */
[data-design="light-alpine-v3"] :is(.gp-directory, .gp-profile, [data-page="tour"]) { max-width: 1320px; padding-inline: var(--gutter); }
[data-design="light-alpine-v3"] .gp-directory { padding-top: clamp(2rem,5vw,4rem); }
[data-design="light-alpine-v3"] .gp-site-brand { font-weight: 600; font-size: 1.15rem; }
[data-design="light-alpine-v3"] .gp-directory-head { max-width: none; margin-bottom: 3rem; }
[data-design="light-alpine-v3"] .gp-eyebrow { margin: 0 0 1rem; font-size: .75rem; color: var(--accent-text); letter-spacing: .08em; }
[data-design="light-alpine-v3"] .gp-directory-head h1 { font-size: clamp(2rem,3.8vw,3.3rem); font-weight: 500; margin: 0; }
[data-design="light-alpine-v3"] .gp-directory .gp-empty-state { padding-block: 1.75rem; }
[data-design="light-alpine-v3"] .gp-status-row { font-size: 1.0625rem; }
[data-design="light-alpine-v3"] .gp-status-note { font-size: .9375rem; line-height: 1.85; max-width: 52ch; }
[data-design="light-alpine-v3"] .gp-section-head { margin-block: .5rem 2rem; }
[data-design="light-alpine-v3"] .gp-section-head h2 { font-weight: 500; font-size: 1.4rem; }
[data-design="light-alpine-v3"] .gp-section-head p { font-size: .9375rem; }
[data-design="light-alpine-v3"] .gp-grid--tours { gap: 2.5rem; grid-template-columns: repeat(2,minmax(0,1fr)); margin-block: 2rem 4rem; align-items: start; }
[data-design="light-alpine-v3"] .gp-tcard { border: 0; border-radius: 0; background: transparent; overflow: visible; }
[data-design="light-alpine-v3"] .gp-tcard__media { overflow: hidden; border-radius: 4px; }
[data-design="light-alpine-v3"] .gp-tcard__media img { aspect-ratio: 16/10; transition: transform .6s ease; }
[data-design="light-alpine-v3"] .gp-tcard__body { padding: 1.5rem 0; gap: .25rem; }
[data-design="light-alpine-v3"] .gp-tcard h2 { font-size: 1.35rem; font-weight: 500; line-height: 1.45; margin: 0 0 1rem; }
[data-design="light-alpine-v3"] .gp-tcard h2 a { text-decoration: none; }
[data-design="light-alpine-v3"] .gp-tcard__meta { font-size: .875rem; line-height: 1.7; margin: 0 0 1rem; color: var(--reading-ink); }
[data-design="light-alpine-v3"] .gp-tcard__guide { font-size: .875rem; line-height: 1.7; margin: 0 0 1rem; color: var(--reading-secondary); }
[data-design="light-alpine-v3"] .gp-next { font-size: .875rem; line-height: 1.7; margin: 0; }
[data-design="light-alpine-v3"] .gp-tcard__price { padding-top: 1rem; border-top: 1px solid var(--hairline); margin: .25rem 0 0; font-size: .875rem; }
[data-design="light-alpine-v3"] .gp-tcard__price b { font-size: 1.7rem; font-weight: 500; }
[data-design="light-alpine-v3"] .gp-card-details { border-block: 1px solid var(--hairline); padding-block: .65rem; margin: 0 0 1rem; }
[data-design="light-alpine-v3"] .gp-card-details summary { font-size: .875rem; cursor: pointer; padding-block: .3rem; color: var(--text-dim); }
[data-design="light-alpine-v3"] .gp-route-metrics { border: 0; gap: .5rem 1rem; margin-block: 1rem; }
[data-design="light-alpine-v3"] .gp-route-metrics > div { padding: .65rem 0; }
[data-design="light-alpine-v3"] .gp-route-metrics dt { font-size: .75rem; }
[data-design="light-alpine-v3"] .gp-route-metrics dd { font-size: 1rem; font-weight: 500; }
[data-design="light-alpine-v3"] .gp-fact-source { font-size: .75rem !important; }
[data-design="light-alpine-v3"] .gp-discovery-cta { border-radius: var(--radius-pill); font-size: .9375rem; font-weight: 500; min-height: 48px; }
[data-design="light-alpine-v3"] .gp-filter { gap: 1.5rem; padding: 2rem; border-color: var(--hairline); }
[data-design="light-alpine-v3"] .gp-filter label > span { font-size: .875rem; margin-bottom: .5rem; }
[data-design="light-alpine-v3"] .gp-filter :is(input,select) { background: transparent; border-width: 0 0 1px; border-radius: 0; font-size: 1rem; min-height: 48px; padding-inline: .15rem; }
[data-design="light-alpine-v3"] .gp-filter button { min-height: 48px; font-weight: 500; }
[data-design="light-alpine-v3"] .gp-directory .gp-card { border: 0; border-bottom: 1px solid var(--hairline); border-radius: 0; padding: 1.5rem 0 2rem; background: transparent; }
[data-design="light-alpine-v3"] .gp-directory .gp-card h2 { font-size: 1.25rem; font-weight: 500; margin-bottom: .7rem; }
[data-design="light-alpine-v3"] :is(.gp-sample-stamp,.gp-preview-banner__tag) { font-size: .75rem; font-weight: 500; justify-self: start; align-self: flex-start; }
[data-design="light-alpine-v3"] .gp-profile-grid { gap: 4rem; }
[data-design="light-alpine-v3"] .gp-profile .gp-hero { padding-block: 1rem 2.5rem; margin-bottom: 3rem; }
[data-design="light-alpine-v3"] .gp-profile .gp-hero h1 { font-size: clamp(2rem,3.5vw,3rem); font-weight: 500; }
[data-design="light-alpine-v3"] .gp-profile-main .gp-bio-sec { font-size: 1rem; line-height: 1.95; }
[data-design="light-alpine-v3"] .gp-tour-main h1 { font-size: clamp(1.85rem,3vw,2.7rem); font-weight: 500; letter-spacing: -.035em; }
[data-design="light-alpine-v3"] .gp-tour-layout { gap: 3rem; }
[data-design="light-alpine-v3"] .gp-gallery { border: 0; border-radius: 0; }
[data-design="light-alpine-v3"] .gp-gallery:not(.gp-gallery--photos) img { aspect-ratio: 21/9; }
[data-design="light-alpine-v3"] .gp-process { margin-top: 3.5rem; padding-block: 2.5rem; gap: 3rem; }
[data-design="light-alpine-v3"] .gp-process h2 { font-size: 1rem; font-weight: 500; margin-block: 1.3rem .65rem; }
[data-design="light-alpine-v3"] :is(a,button,input,select,summary):focus-visible { outline: 2px solid var(--accent-text); outline-offset: 4px; }
@media(hover:hover) and (prefers-reduced-motion:no-preference) { [data-design="light-alpine-v3"] .gp-tcard__media:hover img { transform: scale(1.025); } }
@media(max-width:760px) {
  [data-design="light-alpine-v3"] .gp-directory-head { margin-bottom: 2.5rem; }
  [data-design="light-alpine-v3"] .gp-grid--tours { grid-template-columns: 1fr; gap: 2rem; }
  [data-design="light-alpine-v3"] .gp-filter { padding: 1.25rem; gap: 1.25rem 1rem; grid-template-columns: 1fr 1fr; }
  [data-design="light-alpine-v3"] .gp-filter button { grid-column: 1/-1; }
  [data-design="light-alpine-v3"] .gp-directory .gp-grid--preview { grid-template-columns: 1fr; }
  [data-design="light-alpine-v3"] .gp-profile-grid { gap: 2rem; }
  [data-design="light-alpine-v3"] .gp-process { gap: 1.5rem; padding-block: 2rem; }
  [data-design="light-alpine-v3"] .gp-process h2 { margin-block: 0 .5rem; }
  [data-design="light-alpine-v3"] .gp-gallery:not(.gp-gallery--photos) img { aspect-ratio: 16/10; }
}

/* Declarative scroll staging: readable without JS, no wheel interception, no pinned scroll trap.
   Browsers without view timelines simply display the completed layout. */
@keyframes alpine-arrive { from { transform: translateY(36px); } to { transform: none; } }
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    [data-alpine-reveal], [data-design="light-alpine-v3"] [data-reveal] {
      animation: alpine-arrive 1ms linear both;
      animation-timeline: view();
      animation-range: entry 0% entry 80%;
    }
  }
}
@media (max-width: 760px) {
  [data-design="light-alpine-v3"] :is(.bc-header__bar, .gp-site-header__bar) { min-height: 60px; }
  [data-design="light-alpine-v3"] :is(.bc-card, .card) { padding: 1.25rem; }
}
@media (prefers-reduced-motion: reduce) {
  [data-alpine-reveal] { animation: none; transform: none; opacity: 1; }
}
/* Tour page: same facts -> guide-line spacing as the home and directory cards (3-tier info hierarchy, 2026-09-14). */
[data-design="light-alpine-v3"] .gp-tour-facts-line { margin: 0 0 1rem; }