:root {
  color-scheme: light;
  --ink: #303433;
  --ink-soft: #59625f;
  --paper: #f8faf9;
  --paper-deep: #f0f5f3;
  --white: #ffffff;
  --teal: #18724f;
  --teal-deep: #135f42;
  --aqua: #e9f5ef;
  --coral: #b85f45;
  --amber: #efb44b;
  --line: #d6e2dc;
  --line-strong: #b9d2c6;
  --shadow: 0 10px 28px rgb(35 69 55 / 7%);
  --shadow-card: 0 5px 18px rgb(35 69 55 / 5%);
  --shadow-hover: 0 12px 28px rgb(35 69 55 / 10%);
  --radius-sm: 12px;
  --radius: 16px;
  --radius-lg: 22px;
  --shell: 1180px;
  --reading: 730px;
  --section-space: clamp(2.25rem, 4vw, 3.5rem);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 9rem;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

a { color: var(--teal-deep); overflow-wrap: anywhere; text-underline-offset: .18em; }
a:hover { color: #1f724f; }
img { max-width: 100%; height: auto; }

:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: .75rem;
  left: .75rem;
  z-index: 100;
  padding: .75rem 1rem;
  color: var(--white);
  background: var(--ink);
  border-radius: 10px;
  transform: translateY(-160%);
}

.skip-link:focus { transform: none; }

.shell {
  width: min(calc(100% - 2rem), var(--shell));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--white);
  box-shadow: 0 3px 14px rgb(35 69 55 / 6%);
}

.utility-bar {
  color: var(--white);
  background: var(--teal);
}

.utility-row {
  display: flex;
  min-height: 58px;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.utility-links {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-size: .9rem;
  white-space: nowrap;
}

.utility-links a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding-inline: .35rem;
  color: var(--white);
  font-weight: 650;
  text-decoration: none;
}

.utility-links a:hover { color: var(--white); text-decoration: underline; }
.utility-links span { color: rgb(255 255 255 / 65%); }

.nav-bar {
  background: rgb(255 255 255 / 96%);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.header-row {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.brand {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: .65rem;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -.02em;
  text-decoration: none;
  white-space: nowrap;
}

.brand-stamp {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  color: var(--white);
  background: var(--teal);
  border-radius: 12px;
  font-family: inherit;
  font-size: 1.1rem;
  box-shadow: inset 0 0 0 2px rgb(255 255 255 / 35%);
}

.brand-inverse { color: var(--white); }
.brand-inverse:hover { color: var(--white); }
.brand-inverse .brand-stamp { color: var(--teal-deep); background: var(--white); box-shadow: none; }

.section-home {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: #474c4a;
  font-size: 1.08rem;
  font-weight: 620;
  text-decoration: none;
}
.section-home:hover { color: var(--teal-deep); }

.desktop-nav ul,
.footer-links,
.breadcrumbs,
.inline-list {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
}

.desktop-nav ul { align-items: center; gap: .2rem; }
.desktop-nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: .4rem .62rem;
  color: var(--ink);
  border-radius: var(--radius-sm);
  font-size: .86rem;
  font-weight: 700;
  text-decoration: none;
}
.desktop-nav a:hover { color: var(--teal-deep); background: var(--aqua); }
.mobile-nav { display: none; position: relative; }
.mobile-nav summary {
  min-width: 48px;
  min-height: 44px;
  padding: .55rem .8rem;
  cursor: pointer;
  font-weight: 800;
  list-style: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.mobile-nav summary::-webkit-details-marker { display: none; }
.mobile-nav nav {
  position: absolute;
  top: calc(100% + .65rem);
  right: 0;
  width: min(84vw, 320px);
  padding: .65rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.mobile-nav ul { margin: 0; padding: 0; list-style: none; }
.mobile-nav a { display: block; min-height: 44px; padding: .55rem .75rem; color: var(--ink); font-weight: 700; text-decoration: none; border-radius: 9px; }
.mobile-nav a:hover { background: var(--aqua); }

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2.1rem, 4.2vw, 3.5rem) 0 2.5rem;
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.hero-search { background: linear-gradient(180deg, var(--paper-deep) 0%, var(--paper) 100%); }

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr);
  align-items: center;
  gap: clamp(1.5rem, 4vw, 3.5rem);
}

.eyebrow {
  margin: 0 0 .75rem;
  color: var(--teal-deep);
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .14em;
  text-transform: uppercase;
}

h1, h2, h3 {
  margin: 0;
  color: var(--ink);
  line-height: 1.12;
  text-wrap: balance;
}

h1, h2 { font-family: inherit; letter-spacing: -.035em; }
h1 { max-width: 780px; font-size: clamp(1.95rem, 3.15vw, 3rem); font-weight: 650; }
h2 { font-size: clamp(1.5rem, 2.7vw, 2.2rem); font-weight: 650; }
h3 { font-size: 1.18rem; letter-spacing: -.018em; }

.hero-lede {
  max-width: 700px;
  margin: 1.1rem 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.65;
}

.trust-line {
  max-width: 760px;
  margin: 1rem 0 0;
  padding-left: 1rem;
  color: var(--ink-soft);
  border-left: 3px solid var(--teal);
  font-size: .9rem;
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .72rem;
  margin-top: 1.15rem;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  padding: .72rem 1rem;
  color: var(--teal-deep);
  background: var(--white);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: .93rem;
  font-weight: 850;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
}
.button:hover { color: var(--white); background: var(--teal-deep); border-color: var(--teal-deep); }
.button-primary { color: var(--white); background: var(--teal); border-color: var(--teal); }
.button-primary:hover { background: var(--teal-deep); border-color: var(--teal-deep); }
.button-quiet { border-color: var(--line); background: var(--paper); }

.field-note {
  position: relative;
  padding: 1.2rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.field-note::before {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 15px;
  height: 15px;
  content: "";
  background: var(--teal);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgb(73 189 138 / 14%);
}
.note-index { margin: 0 0 .85rem; color: var(--teal-deep); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .76rem; font-weight: 800; letter-spacing: .08em; }
.field-note h2 { font-family: inherit; font-size: .96rem; font-weight: 900; letter-spacing: 0; }
.source-trail { display: grid; gap: .6rem; margin: .75rem 0 0; padding: 0; list-style: none; }
.source-trail li { position: relative; display: grid; grid-template-columns: 32px 1fr; align-items: start; gap: .65rem; padding-bottom: .6rem; border-bottom: 1px dashed var(--line); }
.source-trail li:last-child { padding-bottom: 0; border: 0; }
.source-trail span { display: grid; width: 30px; height: 30px; place-items: center; color: var(--white); background: var(--teal-deep); border-radius: 50%; font-size: .74rem; font-weight: 900; }
.source-trail strong { display: block; line-height: 1.35; }
.source-trail small { display: block; margin-top: .1rem; color: var(--ink-soft); line-height: 1.45; }

.catalog-search {
  margin-top: 1.5rem;
  padding: 1rem;
  background: rgb(255 253 248 / 72%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.catalog-search label { display: block; margin-bottom: .45rem; font-size: .88rem; font-weight: 850; }
.search-row { display: grid; grid-template-columns: 1fr auto; gap: .6rem; }
.search-row input {
  width: 100%;
  min-height: 50px;
  padding: .75rem .9rem;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  font: inherit;
}
.search-row button { min-height: 50px; padding: .7rem 1.1rem; color: var(--white); background: var(--ink); border: 0; border-radius: 12px; font: inherit; font-weight: 850; cursor: pointer; }
.search-row button:hover { background: var(--teal-deep); }
.micro-note { margin: .55rem 0 0; color: var(--ink-soft); font-size: .82rem; line-height: 1.5; }

.catalog-search--yupoooo {
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 0;
}
.catalog-search--yupoooo label { margin-bottom: .7rem; }
.yupoooo-search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 58px minmax(118px, 150px);
  min-height: 64px;
  gap: 0;
  overflow: hidden;
  background: var(--white);
  border: 2px solid #49bd8a;
  border-radius: 999px;
  transition: border-color .18s ease, box-shadow .18s ease;
}
.yupoooo-search-row:focus-within {
  border-color: var(--teal-deep);
  box-shadow: 0 0 0 4px rgb(73 189 138 / 18%);
}
.yupoooo-search-row input {
  min-width: 0;
  min-height: 60px;
  padding: .75rem 1.3rem;
  background: transparent;
  border: 0;
  border-radius: 999px 0 0 999px;
}
.yupoooo-search-row input:focus-visible { outline: 0; }
.yupoooo-search-row button {
  min-height: 60px;
  padding: .7rem 1rem;
  color: #fff;
  background: var(--teal);
  border-radius: 0 999px 999px 0;
}
.yupoooo-search-row button:hover { background: var(--teal-deep); }
.camera-mark {
  position: relative;
  align-self: stretch;
  background: var(--white);
}
.camera-mark::before {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 22px;
  height: 16px;
  content: "";
  border: 2px solid #78817e;
  border-radius: 3px;
  transform: translate(-50%, -46%);
}
.camera-mark::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 7px;
  height: 7px;
  content: "";
  border: 2px solid #78817e;
  border-radius: 50%;
  box-shadow: -7px -9px 0 -5px #78817e;
  transform: translate(-50%, -45%);
}

.quick-answer { padding: .9rem 0; color: var(--ink); background: var(--white); border-bottom: 1px solid var(--line); }
.quick-grid { display: grid; grid-template-columns: 160px 1fr; gap: 2rem; }
.quick-grid strong { color: var(--teal-deep); font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; }
.quick-grid p { margin: 0; }
.quick-grid p + p { margin-top: .65rem; color: var(--ink-soft); }

.section { padding: var(--section-space) 0; background: var(--white); }
.section-white { background: var(--white); border-block: 1px solid var(--line); }
.section-search { background: var(--paper-deep); border-block: 1px solid var(--line); }
.section-head { display: grid; grid-template-columns: minmax(0, .7fr) minmax(0, 1fr); gap: clamp(1.15rem, 3.4vw, 3rem); align-items: start; margin-bottom: 1.2rem; }
.section-head > p, .section-head > div > p { margin: .2rem 0 0; color: var(--ink-soft); font-size: 1.06rem; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.card {
  padding: 1.15rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}
.card:hover { border-color: var(--line-strong); box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.card p { margin: .65rem 0 0; color: var(--ink-soft); }
.card-link { display: inline-flex; min-height: 44px; align-items: center; margin-top: .75rem; font-weight: 850; }
.card-tag { display: inline-block; margin-bottom: .7rem; padding: .15rem .55rem; color: var(--teal-deep); background: var(--aqua); border-radius: 999px; font-size: .72rem; font-weight: 900; letter-spacing: .07em; text-transform: uppercase; }

.article-library-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.article-library-grid--prose { grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 1.1rem 0 1.8rem; }
.article-card { display: flex; min-width: 0; flex-direction: column; padding: 1.1rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-card); transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease; }
.article-card:hover { border-color: var(--line-strong); box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.article-card h3 { margin: 0; font-size: 1.05rem; }
.article-card p { margin: .65rem 0 0; color: var(--ink-soft); font-size: .9rem; }
.article-outcome { display: block; margin-top: .75rem; padding-top: .65rem; color: var(--ink-soft); border-top: 1px solid var(--line); font-size: .78rem; }
.article-outcome strong { color: var(--ink); }
.article-card .card-link { margin-top: auto; padding-top: 1rem; }

.definition-list {
  display: grid;
  grid-template-columns: minmax(120px, .34fr) minmax(0, 1fr);
  margin: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
.definition-list dt,
.definition-list dd { margin: 0; padding: 1rem 1.15rem; border-bottom: 1px solid var(--line); }
.definition-list dt { font-weight: 900; background: var(--paper-deep); }
.definition-list dd { color: var(--ink-soft); }
.definition-list dt:last-of-type,
.definition-list dd:last-of-type { border-bottom: 0; }

.category-section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 1.5rem; margin-bottom: .7rem; padding-left: 1rem; border-left: 3px solid var(--teal); }
.category-section-heading h2 { font-size: clamp(1.45rem, 2.35vw, 1.95rem); }
.category-view-all { min-height: 44px; display: inline-flex; align-items: center; color: var(--teal-deep); font-weight: 750; text-decoration: none; }
.category-section-note { margin: 0 auto 1.1rem; color: var(--ink-soft); }
.category-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: .85rem; }
.category-card { position: relative; display: flex; min-height: 288px; flex-direction: column; align-items: center; padding: 1rem .9rem; overflow: hidden; color: var(--ink); background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-card); text-align: center; text-decoration: none; transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease; }
.category-card:hover { color: var(--ink); border-color: var(--line-strong); box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.category-icon-stage { display: grid; width: 104px; height: 104px; place-items: center; margin: .1rem auto .75rem; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: inset 0 -10px 24px rgb(35 69 55 / 2%); }
.category-icon { width: 66px; height: 66px; color: #1f2221; filter: contrast(1.15); }
.category-card h3 { margin-top: .15rem; font-size: 1.08rem; font-weight: 750; }
.category-popular { margin-top: .25rem; color: #4a7d68; font-size: .69rem; font-weight: 650; letter-spacing: .16em; text-transform: uppercase; }
.category-card-note { margin-top: .5rem; color: var(--ink-soft); font-size: .75rem; line-height: 1.42; }
.category-cta { display: inline-flex; margin-top: auto; padding-top: .55rem; color: var(--teal-deep); font-size: .79rem; font-weight: 800; }
.prose .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.brand-directory-section { overflow: hidden; background: var(--white); border-top: 1px solid var(--line); }
.brand-section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 1.5rem; margin-bottom: .7rem; padding-left: 1rem; border-left: 3px solid var(--teal); }
.brand-section-heading h2 { font-size: clamp(1.45rem, 2.35vw, 1.95rem); }
.brand-view-all { min-height: 44px; display: inline-flex; align-items: center; color: var(--teal-deep); font-weight: 750; text-decoration: none; }
.brand-section-note { margin: 0 auto 1.1rem; color: var(--ink-soft); }
.brand-grid { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: .85rem; }
.brand-card {
  position: relative;
  z-index: 0;
  display: flex;
  min-width: 0;
  min-height: 194px;
  flex-direction: column;
  color: var(--ink);
  background: var(--white);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  text-decoration: none;
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}
.brand-card:hover { z-index: 2; color: var(--ink); border-color: var(--line-strong); box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.brand-mark-stage { display: grid; min-height: 138px; flex: 1; place-items: center; padding: .85rem; background: var(--paper); }
.brand-logo { display: block; width: min(100%, 128px); height: 64px; object-fit: contain; filter: brightness(0); }
.brand-card-label { display: flex; min-height: 56px; align-items: center; justify-content: space-between; gap: .45rem; padding: .7rem .78rem; background: var(--white); border-top: 1px solid var(--line); font-size: .82rem; font-weight: 720; line-height: 1.25; }
.brand-card-arrow { flex: 0 0 auto; color: var(--teal-deep); font-weight: 900; }
.brand-disclaimer { margin-top: 1.1rem; margin-bottom: 0; color: var(--ink-soft); font-size: .8rem; }

.guide-hero { padding: 2.2rem 0 1.7rem; background: var(--white); border-bottom: 1px solid var(--line); }
.breadcrumbs { flex-wrap: wrap; gap: .4rem; margin-bottom: 1rem; color: var(--ink-soft); font-size: .82rem; }
.breadcrumbs li:not(:last-child)::after { margin-left: .4rem; content: "/"; color: var(--line); }
.guide-hero h1 { max-width: 840px; font-size: clamp(1.9rem, 3.35vw, 2.85rem); }
.guide-deck { max-width: var(--reading); margin: .8rem 0 0; color: var(--ink-soft); font-size: 1.12rem; }
.editorial-meta { display: flex; flex-wrap: wrap; gap: .35rem .55rem; margin: .9rem 0 0; color: var(--ink-soft); font-size: .82rem; }
.editorial-meta a { color: var(--teal-deep); font-weight: 750; }
.article-layout { display: grid; grid-template-columns: minmax(0, var(--reading)) minmax(230px, 310px); justify-content: space-between; gap: clamp(1.75rem, 4.3vw, 4rem); padding-block: 2.1rem 3.5rem; }
.prose { min-width: 0; }
.prose > :first-child { margin-top: 0; }
.prose [id] { scroll-margin-top: 9rem; }
.prose h2 { margin-top: 2.05rem; font-size: clamp(1.42rem, 2.35vw, 1.92rem); }
.prose h3 { margin-top: 1.35rem; }
.prose p, .prose ul, .prose ol, .prose dl { margin-block: .85rem; }
.prose li + li { margin-top: .55rem; }
.prose .quick-box { margin: 0 0 1.5rem; padding: 1.15rem 1.25rem; color: var(--ink); background: linear-gradient(135deg, var(--aqua) 0%, var(--paper) 100%); border: 1px solid var(--line-strong); border-radius: var(--radius); box-shadow: var(--shadow-card); }
.quick-box strong { display: block; margin-bottom: .45rem; color: var(--teal-deep); font-size: .76rem; letter-spacing: .12em; text-transform: uppercase; }
.quick-box p { margin: 0; }
.quick-box p + p { margin-top: .65rem; }
.callout { margin: 1.25rem 0; padding: 1rem 1.1rem; background: var(--aqua); border: 1px solid var(--line); border-left: 4px solid var(--teal); border-radius: var(--radius-sm); }
.callout.warning { background: #f9e7df; border-color: var(--coral); }
.callout p { margin: 0; }
.article-toc { margin: 0 0 1.5rem; padding: 1.05rem 1.15rem; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); }
.article-toc strong { display: block; color: var(--teal-deep); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; }
.article-toc ol { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .4rem 1.4rem; margin: .8rem 0 0; padding-left: 1.2rem; }
.article-toc li { margin: 0; color: var(--ink-soft); font-size: .88rem; }
.record-template { margin: 1.1rem 0 1.5rem; overflow: hidden; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-card); }
.record-row { display: grid; grid-template-columns: minmax(140px, .38fr) minmax(0, 1fr); gap: 1rem; padding: .8rem 1rem; border-bottom: 1px solid var(--line); }
.record-row:last-child { border-bottom: 0; }
.record-row strong { color: var(--teal-deep); }
.record-row span { color: var(--ink-soft); }
.comparison { width: 100%; margin: 1.1rem 0; border-collapse: collapse; font-size: .93rem; }
.comparison th, .comparison td { padding: .8rem; vertical-align: top; text-align: left; border-bottom: 1px solid var(--line); }
.comparison th { background: var(--paper-deep); color: var(--ink); }
.checklist { margin: 1rem 0; padding: 0; list-style: none; }
.checklist li { display: grid; grid-template-columns: 26px 1fr; gap: .65rem; padding: .72rem 0; border-bottom: 1px solid var(--line); }
.checklist li::before { display: grid; width: 23px; height: 23px; place-items: center; content: ""; background: var(--white); border: 2px solid var(--teal); border-radius: 6px; }
.score-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem; margin-block: 1rem; }
.score-card { padding: 1rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-sm); box-shadow: var(--shadow-card); }
.score-card strong { display: block; color: var(--teal-deep); }
.side-note { align-self: start; position: sticky; top: 100px; padding: 1.2rem; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-card); }
.side-note h2 { font-family: inherit; font-size: .86rem; font-weight: 900; letter-spacing: 0; }
.side-note ul { margin: .8rem 0 0; padding-left: 1.15rem; }
.side-note li + li { margin-top: .45rem; }
.side-note a { font-size: .88rem; font-weight: 750; }
.faq-list { display: grid; gap: .8rem; }
.faq-item { padding: 1.1rem 1.2rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-card); }
.faq-item h2 { font-family: inherit; font-size: 1rem; font-weight: 900; letter-spacing: 0; }
.faq-item p { margin: .6rem 0 0; }

.closing { padding: 2.1rem 0; color: var(--ink); background: var(--white); border-top: 1px solid var(--line); }
.closing-grid { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }
.closing h2 { color: var(--ink); font-size: clamp(1.42rem, 2.35vw, 2rem); }
.closing p { max-width: 720px; margin: .7rem 0 0; color: var(--ink-soft); }
.closing .button { color: var(--teal-deep); border-color: var(--line-strong); }
.closing .button:hover { color: var(--white); background: var(--teal-deep); border-color: var(--teal-deep); }

.site-footer { padding: 2.1rem 0 1.1rem; background: var(--white); border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: minmax(250px, .65fr) minmax(0, 1.35fr); gap: 2rem; }
.footer-copy p { max-width: 460px; margin: 1rem 0 0; color: var(--ink-soft); font-size: .88rem; }
.footer-links { flex-wrap: wrap; gap: .5rem 1rem; align-content: start; }
.footer-links a { font-size: .84rem; font-weight: 750; }
.footer-bottom { margin-top: 1.4rem; padding-top: .9rem; color: var(--ink-soft); border-top: 1px solid var(--line); font-size: .8rem; }

.whatsapp-float {
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 100;
  display: flex;
  width: 58px;
  height: 58px;
  align-items: center;
  justify-content: center;
  color: var(--white);
  background: #25d366;
  border: 2px solid var(--teal-deep);
  border-radius: 50%;
  box-shadow: 0 12px 30px rgb(9 46 28 / 30%);
  text-decoration: none;
  transition: transform .18s ease, box-shadow .18s ease;
}
.whatsapp-float:hover,
.whatsapp-float:focus-visible {
  color: var(--white);
  box-shadow: 0 16px 36px rgb(9 46 28 / 38%);
  transform: translateY(-2px) scale(1.04);
}
.whatsapp-float img { display: block; width: 32px; height: 32px; }
.whatsapp-label {
  position: absolute;
  top: 50%;
  right: 68px;
  width: max-content;
  max-width: 210px;
  padding: .55rem .7rem;
  color: var(--white);
  background: #17231d;
  border-radius: 9px;
  box-shadow: 0 8px 24px rgb(0 0 0 / 20%);
  font-size: 13px;
  font-weight: 650;
  line-height: 1.2;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-50%);
  transition: opacity .18s ease, visibility .18s ease;
}
.whatsapp-float:hover .whatsapp-label,
.whatsapp-float:focus-visible .whatsapp-label { opacity: 1; visibility: visible; }

.not-found { min-height: 58vh; display: grid; align-items: center; padding: clamp(2.5rem, 5.5vw, 4.5rem) 0; background: var(--white); }
.not-found-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 390px); align-items: center; gap: clamp(2rem, 8vw, 7rem); }
.not-found h1 { max-width: 760px; font-size: clamp(1.9rem, 3.35vw, 2.85rem); }

@media (max-width: 980px) {
  .desktop-nav { display: none; }
  .mobile-nav { display: block; }
  .hero-grid { grid-template-columns: 1fr; }
  .field-note { max-width: 650px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .article-library-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .category-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .brand-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
  .article-layout { grid-template-columns: 1fr; }
  .side-note { position: static; }
  .not-found-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  html { scroll-padding-top: 8.5rem; }
  .shell { width: min(calc(100% - 1.25rem), var(--shell)); }
  .utility-row { min-height: 54px; gap: .5rem; }
  .brand { gap: .45rem; font-size: .9rem; }
  .brand-stamp { width: 34px; height: 34px; font-size: .95rem; }
  .utility-links { gap: .28rem; font-size: .72rem; }
  .utility-links a { display: inline-flex; min-height: 44px; align-items: center; padding-inline: .2rem; }
  .header-row { min-height: 64px; }
  .hero { padding: 1.9rem 0 2.1rem; }
  h1 { font-size: clamp(1.72rem, 7.8vw, 2rem); }
  .guide-hero h1,
  .not-found h1 { font-size: clamp(1.75rem, 8vw, 2.05rem); }
  .hero-lede { margin-top: .85rem; line-height: 1.55; }
  .trust-line { margin-top: .8rem; font-size: .84rem; line-height: 1.55; }
  .hero .catalog-search { margin-top: 1.15rem; }
  .hero .field-note { display: none; }
  .hero-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .55rem; }
  .hero-actions,
  .closing .button-row { padding-right: 56px; }
  .hero-actions .button:first-child { grid-column: 1 / -1; }
  .hero-actions .button { min-height: 44px; padding: .62rem .7rem; }
  .button-row { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
  .search-row { grid-template-columns: 1fr; }
  .yupoooo-search-row { grid-template-columns: minmax(0, 1fr) 44px 92px; }
  .yupoooo-search-row input { min-height: 56px; padding-inline: 1rem .45rem; }
  .yupoooo-search-row button { min-height: 56px; padding-inline: .6rem; }
  .camera-mark::before { transform: translate(-52%, -46%) scale(.9); }
  .camera-mark::after { transform: translate(-52%, -45%) scale(.9); }
  .quick-grid, .section-head, .closing-grid, .footer-grid { grid-template-columns: 1fr; }
  .quick-grid { gap: .55rem; }
  .card-grid, .score-grid { grid-template-columns: 1fr; }
  .article-library-grid, .article-library-grid--prose, .article-toc ol { grid-template-columns: 1fr; }
  .record-row { grid-template-columns: 1fr; gap: .2rem; }
  .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .7rem; }
  .category-section-heading { align-items: flex-start; flex-direction: column; gap: .35rem; }
  .brand-section-heading { align-items: flex-start; flex-direction: column; gap: .35rem; }
  .brand-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .75rem; }
  .brand-card { min-height: 182px; }
  .brand-mark-stage { min-height: 128px; }
  .brand-card-label { padding-inline: .68rem; font-size: .78rem; }
  .definition-list { grid-template-columns: 1fr; }
  .definition-list dt { border-bottom: 0; }
  .category-card { min-height: 252px; padding-inline: .65rem; }
  .category-icon-stage { width: 84px; height: 84px; border-radius: 18px; }
  .category-icon { width: 50px; height: 50px; }
  .section { padding-block: 2.1rem; }
  .section-head { gap: .9rem; }
  .guide-hero { padding: 1.8rem 0 1.45rem; }
  .breadcrumbs a { display: inline-flex; min-height: 44px; align-items: center; }
  .article-layout { padding-block: 1.5rem 2.75rem; }
  .prose h2 { margin-top: 1.7rem; }
  .closing { padding-block: 1.9rem; }
  .site-footer { padding: 1.9rem 0 4.5rem; }
  .footer-links a { display: inline-flex; min-height: 44px; align-items: center; padding-inline: .25rem; }
  .whatsapp-float { right: max(10px, env(safe-area-inset-right)); bottom: max(10px, env(safe-area-inset-bottom)); width: 48px; height: 48px; }
  .whatsapp-float img { width: 28px; height: 28px; }
  .whatsapp-label { display: none; }
  .comparison { display: block; overflow-x: auto; }
  .closing .button-row { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

@media print {
  .whatsapp-float { display: none !important; }
}