/* ============================================================
   AIARE — Alpine field-guide editorial design system
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,800&family=Spectral:ital,wght@0,300;0,400;0,500;0,600;1,400&family=Archivo:wght@400;500;600;700&display=swap');

:root{
  --ink:#0b1a26;
  --ink-2:#102634;
  --snow:#eef3f6;
  --paper:#ffffff;
  --glacier:#1c5675;
  --glacier-deep:#0f3c54;
  --frost:#dde9ef;
  --frost-2:#e9f1f5;
  --line:#d3e0e7;
  --alpenglow:#e85d34;
  --alpenglow-deep:#c2461f;
  --text:#13242f;
  --muted:#5c6f7b;
  --gold:#d9a441;

  --display:'Fraunces',Georgia,serif;
  --body:'Spectral',Georgia,serif;
  --ui:'Archivo','Helvetica Neue',sans-serif;

  --measure:38rem;
  --maxw:74rem;
  --r:3px;

  /* topographic contour motif */
  --topo:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='540' height='360' viewBox='0 0 540 360'%3E%3Cg fill='none' stroke='%23ffffff' stroke-opacity='0.05' stroke-width='1.4'%3E%3Cpath d='M-20 120 C 90 60 200 180 320 110 C 420 50 500 150 580 90'/%3E%3Cpath d='M-20 150 C 90 92 200 210 320 142 C 420 84 500 182 580 122'/%3E%3Cpath d='M-20 182 C 90 126 200 242 320 176 C 420 120 500 214 580 156'/%3E%3Cpath d='M-20 216 C 90 162 200 274 320 212 C 420 158 500 248 580 192'/%3E%3Cpath d='M-20 252 C 90 200 200 306 320 250 C 420 198 500 284 580 230'/%3E%3Cpath d='M-20 290 C 90 240 200 338 320 290 C 420 240 500 322 580 270'/%3E%3C/g%3E%3C/svg%3E");
}

/* ---- reset ------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:var(--body);
  font-weight:400;
  font-size:1.075rem;
  line-height:1.72;
  color:var(--text);
  background:var(--snow);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--glacier);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{color:var(--alpenglow-deep)}
::selection{background:var(--alpenglow);color:#fff}

/* ---- shared layout ----------------------------------------- */
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(1.1rem,4vw,2.6rem)}
.eyebrow{
  font-family:var(--ui);font-weight:600;font-size:.72rem;
  letter-spacing:.22em;text-transform:uppercase;color:var(--alpenglow-deep);
}
.eyebrow--light{color:#9ec3d4}

/* avalanche danger-scale decorative bar */
.scale{display:flex;height:5px;width:88px;border-radius:6px;overflow:hidden}
.scale span{flex:1}
.scale i:nth-child(1){background:#5fb24a}
.scale span:nth-child(1){background:#5fb24a}
.scale span:nth-child(2){background:#f4d23f}
.scale span:nth-child(3){background:#f0922f}
.scale span:nth-child(4){background:#e23b2e}
.scale span:nth-child(5){background:#0b1a26}

/* ============================================================
   HEADER
   ============================================================ */
.site-head{
  background:var(--ink);color:#eaf2f6;position:sticky;top:0;z-index:50;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.site-head .wrap{display:flex;align-items:center;gap:2rem;
  min-height:74px;padding-block:.5rem}
.brand{display:flex;align-items:center;gap:.85rem;text-decoration:none;color:inherit}
.brand-mark{
  width:42px;height:42px;flex:none;border-radius:50%;
  background:radial-gradient(circle at 38% 30%,var(--glacier),var(--glacier-deep));
  display:grid;place-items:center;position:relative;
  box-shadow:0 0 0 1px rgba(255,255,255,.12),inset 0 1px 2px rgba(255,255,255,.18);
}
.brand-mark svg{width:24px;height:24px}
.brand-name{font-family:var(--display);font-weight:600;font-size:1.4rem;
  letter-spacing:.02em;line-height:1}
.brand-sub{font-family:var(--ui);font-size:.6rem;letter-spacing:.24em;
  text-transform:uppercase;color:#84a8bb;margin-top:.25rem}
.nav{margin-left:auto;display:flex;gap:1.7rem;align-items:center}
.nav a{
  font-family:var(--ui);font-weight:500;font-size:.83rem;letter-spacing:.04em;
  color:#c4d6df;text-decoration:none;text-transform:uppercase;position:relative;
  padding-block:.4rem;
}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:var(--alpenglow);transition:right .28s ease}
.nav a:hover{color:#fff}
.nav a:hover::after,.nav a[aria-current]::after{right:0}
.nav a[aria-current]{color:#fff}
.menu-toggle{display:none}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  background:
    var(--topo),
    radial-gradient(120% 130% at 78% -10%,#1c4c68 0%,transparent 55%),
    linear-gradient(195deg,var(--ink-2),var(--ink) 70%);
  color:#eef5f8;position:relative;overflow:hidden;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.hero::after{ /* snow grain */
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.5) .5px,transparent .6px);
  background-size:7px 7px;mix-blend-mode:overlay;
}
.hero .wrap{position:relative;z-index:2;
  padding-block:clamp(3.4rem,8vw,6.4rem)}
.hero-grid{display:grid;grid-template-columns:1.55fr .9fr;
  gap:clamp(2rem,5vw,4.5rem);align-items:center}
.hero h1{
  font-family:var(--display);font-optical-sizing:auto;
  font-weight:600;font-size:clamp(2.6rem,6.4vw,4.7rem);
  line-height:1.02;letter-spacing:-.018em;margin:1.3rem 0 1.1rem;
}
.hero h1 em{font-style:italic;font-weight:500;color:var(--alpenglow)}
.hero-lead{font-size:1.2rem;color:#bcd3de;max-width:32rem;line-height:1.62}
.hero-meta{display:flex;align-items:center;gap:1rem;margin-top:2rem;
  font-family:var(--ui)}
.hero-cta{
  display:inline-flex;align-items:center;gap:.6rem;
  background:var(--alpenglow);color:#fff;text-decoration:none;
  font-family:var(--ui);font-weight:600;font-size:.85rem;letter-spacing:.06em;
  text-transform:uppercase;padding:.95rem 1.7rem;border-radius:var(--r);
  transition:transform .18s ease,background .18s ease;
}
.hero-cta:hover{background:var(--alpenglow-deep);color:#fff;transform:translateY(-2px)}
.hero-card{
  background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r);padding:1.6rem;backdrop-filter:blur(3px);
}
.hero-card .scale{margin-bottom:1rem}
.hero-card h3{font-family:var(--display);font-weight:600;font-size:1.35rem;
  line-height:1.18;margin-bottom:.5rem}
.hero-card p{font-size:.96rem;color:#aac4d1}
.hero-card a{color:#fff;text-decoration:none}
.hero-portrait{
  width:62px;height:62px;border-radius:50%;object-fit:cover;flex:none;
  border:2px solid rgba(255,255,255,.25);
}
.hero-byline strong{display:block;font-family:var(--ui);font-weight:600;
  font-size:.92rem;color:#fff}
.hero-byline span{font-family:var(--ui);font-size:.76rem;letter-spacing:.12em;
  text-transform:uppercase;color:#7f9fb0}

/* page-load reveal */
.reveal{opacity:0;transform:translateY(18px);
  animation:rise .8s cubic-bezier(.2,.7,.2,1) forwards}
.reveal.d1{animation-delay:.08s}
.reveal.d2{animation-delay:.18s}
.reveal.d3{animation-delay:.3s}
.reveal.d4{animation-delay:.42s}
@keyframes rise{to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){
  .reveal{animation:none;opacity:1;transform:none}
}

/* ============================================================
   SECTIONS
   ============================================================ */
.section{padding-block:clamp(3rem,7vw,5.5rem)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;
  gap:2rem;margin-bottom:2.4rem;flex-wrap:wrap}
.section-head h2{font-family:var(--display);font-weight:600;
  font-size:clamp(1.8rem,3.6vw,2.7rem);line-height:1.07;letter-spacing:-.015em}
.section-head p{color:var(--muted);margin-top:.4rem;max-width:34rem}
.section-link{font-family:var(--ui);font-weight:600;font-size:.8rem;
  letter-spacing:.08em;text-transform:uppercase;text-decoration:none;
  color:var(--alpenglow-deep);white-space:nowrap}
.section-link:hover{color:var(--ink)}

/* ---- article card grid ------------------------------------- */
.card-grid{display:grid;gap:1.6rem;
  grid-template-columns:repeat(auto-fill,minmax(270px,1fr))}
.card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;display:flex;flex-direction:column;
  text-decoration:none;color:inherit;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);
  box-shadow:0 18px 38px -22px rgba(11,26,38,.5);border-color:#bcd0da}
.card-img{aspect-ratio:3/2;overflow:hidden;background:var(--frost)}
.card-img img{width:100%;height:100%;object-fit:cover;
  transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.card:hover .card-img img{transform:scale(1.06)}
.card-body{padding:1.25rem 1.3rem 1.45rem;display:flex;
  flex-direction:column;gap:.55rem;flex:1}
.tag{align-self:flex-start;font-family:var(--ui);font-weight:600;
  font-size:.65rem;letter-spacing:.16em;text-transform:uppercase;
  padding:.3rem .6rem;border-radius:2px}
.tag--skiing{background:var(--frost);color:var(--glacier-deep)}
.tag--avalanche{background:#fae0d7;color:var(--alpenglow-deep)}
.tag--uncategorized{background:#e7ecef;color:var(--muted)}
.card h3{font-family:var(--display);font-weight:600;font-size:1.24rem;
  line-height:1.18;letter-spacing:-.01em}
.card:hover h3{color:var(--glacier-deep)}
.card-meta{margin-top:auto;font-family:var(--ui);font-size:.74rem;
  letter-spacing:.05em;text-transform:uppercase;color:var(--muted);
  display:flex;align-items:center;gap:.5rem}

/* feature card (wide) */
.feature{grid-column:span 2;display:grid;grid-template-columns:1.05fr 1fr}
.feature .card-img{aspect-ratio:auto}
.feature .card-body{padding:2rem 2.2rem;justify-content:center;gap:.85rem}
.feature h3{font-size:1.95rem}
.feature p{color:var(--muted);font-size:1rem}

/* ---- band (dark interlude) --------------------------------- */
.band{background:var(--topo),linear-gradient(160deg,var(--ink-2),var(--ink));
  color:#e7f0f4}
.band .section-head h2{color:#fff}
.band-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.stat{border:1px solid rgba(255,255,255,.12);border-radius:var(--r);
  padding:1.7rem 1.6rem;background:rgba(255,255,255,.03)}
.stat .num{font-family:var(--display);font-weight:600;font-size:2.7rem;
  color:var(--alpenglow);line-height:1}
.stat p{color:#a9c3d0;font-size:.95rem;margin-top:.5rem}

/* ============================================================
   FOOTER
   ============================================================ */
.site-foot{background:var(--topo),var(--ink);color:#aebfc9;
  padding-block:3.4rem 2rem;border-top:3px solid var(--alpenglow)}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2.5rem;
  padding-bottom:2.4rem;border-bottom:1px solid rgba(255,255,255,.09)}
.foot-top h4{font-family:var(--ui);font-weight:600;font-size:.74rem;
  letter-spacing:.18em;text-transform:uppercase;color:#6f91a3;margin-bottom:1rem}
.foot-top p{font-size:.95rem;max-width:24rem}
.foot-links{display:flex;flex-direction:column;gap:.55rem}
.foot-links a{color:#c2d3dc;text-decoration:none;font-size:.95rem}
.foot-links a:hover{color:var(--alpenglow)}
.foot-brand{font-family:var(--display);font-weight:600;font-size:1.5rem;
  color:#fff;margin-bottom:.7rem}
.foot-bottom{display:flex;justify-content:space-between;gap:1rem;
  flex-wrap:wrap;padding-top:1.6rem;font-family:var(--ui);font-size:.78rem;
  letter-spacing:.04em;color:#6f91a3}
.disclosure{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.09);
  border-radius:var(--r);padding:.9rem 1.1rem;font-size:.82rem;
  color:#90aab9;margin-top:1.4rem}

/* ============================================================
   ARTICLE  (editorial + buyer's guide)
   ============================================================ */
.article-head{background:var(--topo),
  linear-gradient(170deg,var(--ink-2),var(--ink));color:#eef5f8;
  position:relative;overflow:hidden}
.article-head .wrap{padding-block:clamp(2.6rem,6vw,4.4rem)}
.crumbs{font-family:var(--ui);font-size:.74rem;letter-spacing:.1em;
  text-transform:uppercase;color:#88a8b9;margin-bottom:1.1rem}
.crumbs a{color:#88a8b9;text-decoration:none}
.crumbs a:hover{color:#fff}
.article-head h1{font-family:var(--display);font-weight:600;
  font-size:clamp(2.1rem,5vw,3.7rem);line-height:1.05;letter-spacing:-.018em;
  max-width:20ch;margin:.7rem 0 1.2rem}
.article-meta{display:flex;align-items:center;gap:.9rem;
  font-family:var(--ui);font-size:.8rem;letter-spacing:.05em;
  text-transform:uppercase;color:#9ab6c4}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#577387}

.article-body{max-width:var(--measure);margin:0 auto;
  padding-block:clamp(2.4rem,5vw,3.6rem)}
.article-body.wide{max-width:58rem}
.article-body p{margin-bottom:1.3rem}
.article-body h2{font-family:var(--display);font-weight:600;
  font-size:1.7rem;line-height:1.15;letter-spacing:-.01em;
  margin:2.6rem 0 1rem;color:var(--ink)}
.article-body h3{font-family:var(--display);font-weight:600;font-size:1.3rem;
  margin:2rem 0 .8rem;color:var(--glacier-deep)}
.article-body h4{font-family:var(--ui);font-weight:700;font-size:.95rem;
  letter-spacing:.04em;margin:1.6rem 0 .6rem}
.article-body ul,.article-body ol{margin:0 0 1.4rem 1.3rem}
.article-body li{margin-bottom:.45rem}
.article-body img{border-radius:var(--r);margin:1.6rem 0}
.article-body > p:first-of-type::first-letter{
  font-family:var(--display);font-weight:600;float:left;
  font-size:3.9rem;line-height:.84;padding:.32rem .6rem 0 0;color:var(--alpenglow)}
.article-body blockquote{border-left:3px solid var(--alpenglow);
  padding-left:1.2rem;margin:1.6rem 0;font-style:italic;color:var(--muted)}

/* inline links list (course pages) */
.linklist{list-style:none;margin:1.4rem 0 !important;padding:0;
  display:flex;flex-direction:column;gap:.1rem}
.linklist li{margin:0;border-top:1px solid var(--line)}
.linklist li:last-child{border-bottom:1px solid var(--line)}
.linklist a{display:flex;align-items:center;gap:.7rem;padding:.95rem .4rem;
  text-decoration:none;font-family:var(--ui);font-weight:500;color:var(--ink)}
.linklist a::before{content:"↗";color:var(--alpenglow);font-size:1.1rem}
.linklist a:hover{color:var(--alpenglow-deep);padding-left:.9rem;
  transition:padding .2s ease}

/* ---- product review cards (buyer's guide) ------------------ */
.guide-intro{max-width:var(--measure);margin:0 auto;
  padding-block:clamp(2.2rem,4vw,3rem)}
.guide-intro p{margin-bottom:1.2rem;font-size:1.13rem;color:#2c3f4a}
.products{max-width:54rem;margin:0 auto;display:flex;
  flex-direction:column;gap:1.8rem;padding-bottom:1rem}
.product{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;transition:box-shadow .25s ease,border-color .25s ease;
}
.product:hover{box-shadow:0 20px 44px -28px rgba(11,26,38,.55);
  border-color:#bcd0da}
.product-head{display:flex;align-items:center;gap:1.15rem;
  padding:1.2rem 1.5rem;background:var(--frost-2);
  border-bottom:1px solid var(--line)}
.rank{
  font-family:var(--display);font-weight:600;font-size:1.55rem;
  color:#fff;background:var(--alpenglow);width:46px;height:46px;flex:none;
  display:grid;place-items:center;line-height:1;border-radius:var(--r);
  box-shadow:0 6px 14px -6px rgba(232,93,52,.7);
}
.product-id{flex:1;min-width:0}
.product-label{font-family:var(--ui);font-weight:600;font-size:.68rem;
  letter-spacing:.15em;text-transform:uppercase;color:var(--alpenglow-deep)}
.product-id h2{font-family:var(--display);font-weight:600;font-size:1.4rem;
  line-height:1.12;margin:.2rem 0 0;letter-spacing:-.01em}
.product-thumb{width:88px;height:88px;flex:none;object-fit:contain;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:.4rem}
.specs{display:flex;flex-wrap:wrap;gap:.5rem;list-style:none;
  padding:1.1rem 1.5rem 0}
.specs li{font-family:var(--ui);font-size:.77rem;background:var(--frost);
  color:var(--glacier-deep);padding:.34rem .7rem;border-radius:2px}
.specs li strong{font-weight:700;color:var(--ink)}
.product-copy{padding:1.2rem 1.5rem .4rem}
.product-copy p{font-size:1.02rem;margin-bottom:.85rem;color:#2c3f4a}
.product .buy{margin:.4rem 1.5rem 1.5rem}
.buy{
  display:inline-flex;align-items:center;gap:.55rem;
  background:var(--ink);color:#fff;text-decoration:none;
  font-family:var(--ui);font-weight:600;font-size:.8rem;letter-spacing:.07em;
  text-transform:uppercase;padding:.85rem 1.5rem;border-radius:var(--r);
  transition:background .18s ease,transform .18s ease;
}
.buy::after{content:"↗";font-size:.95rem}
.buy:hover{background:var(--alpenglow);color:#fff;transform:translateY(-2px)}

/* article footer / share back */
.article-foot{max-width:58rem;margin:0 auto;
  padding:2rem 0 1rem;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  font-family:var(--ui);font-size:.85rem}
.back-link{text-decoration:none;font-weight:600;color:var(--glacier-deep);
  text-transform:uppercase;letter-spacing:.06em;font-size:.78rem}
.back-link:hover{color:var(--alpenglow-deep)}

/* related */
.related{background:var(--frost-2);border-top:1px solid var(--line)}

/* ---- category / index header ------------------------------- */
.page-head{background:var(--topo),
  linear-gradient(170deg,var(--ink-2),var(--ink));color:#eef5f8}
.page-head .wrap{padding-block:clamp(2.6rem,6vw,4rem)}
.page-head h1{font-family:var(--display);font-weight:600;
  font-size:clamp(2.2rem,5vw,3.5rem);line-height:1.05;margin:.8rem 0 .6rem}
.page-head p{color:#b3cdd9;max-width:38rem;font-size:1.1rem}

/* ---- responsive -------------------------------------------- */
@media (max-width:860px){
  .hero-grid{grid-template-columns:1fr}
  .hero-card{order:-1}
  .feature{grid-column:span 1;grid-template-columns:1fr}
  .band-grid{grid-template-columns:1fr}
  .foot-top{grid-template-columns:1fr;gap:1.8rem}
}
@media (max-width:520px){
  .product-thumb{display:none}
}
@media (max-width:640px){
  .nav{position:fixed;inset:74px 0 auto 0;background:var(--ink);
    flex-direction:column;gap:0;padding:.5rem 0;
    border-bottom:1px solid rgba(255,255,255,.1);
    transform:translateY(-130%);transition:transform .3s ease;margin:0}
  .nav.open{transform:none}
  .nav a{width:100%;padding:.95rem clamp(1.1rem,4vw,2.6rem)}
  .nav a::after{display:none}
  .menu-toggle{display:grid;margin-left:auto;background:none;border:0;
    cursor:pointer;gap:5px;padding:.4rem}
  .menu-toggle span{width:24px;height:2px;background:#dce8ee;display:block}
  .article-body > p:first-of-type::first-letter{font-size:3rem}
}