:root {
  --willow-primary: #174737;
  --willow-secondary: #7d9b7d;
  --willow-accent: #b6975b;
  --willow-plum: #6f3451;
  --willow-background: #f7f8f4;
  --willow-surface: #fffdf7;
  --willow-surface-soft: #edf2ec;
  --willow-surface-deep: #13283d;
  --willow-text: #17263c;
  --willow-muted: #647080;
  --willow-border: rgba(23, 71, 55, .18);
  --willow-radius-small: 8px;
  --willow-radius-medium: 18px;
  --willow-radius-large: 34px;
  --willow-radius-arch: 999px 999px 28px 28px;
  --willow-shadow-soft: 0 18px 60px rgba(23, 38, 60, .09);
  --willow-shadow-elevated: 0 26px 80px rgba(23, 38, 60, .15);
  --willow-container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--willow-background);
  color: var(--willow-text);
  line-height: 1.65;
  overflow-x: hidden;
}
body.menu-open { overflow: hidden; }
img { max-width: 100%; display: block; object-fit: cover; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--willow-plum); outline-offset: 4px; }
.skip-link { position: absolute; left: 1rem; top: -4rem; z-index: 100; background: var(--willow-text); color: white; padding: .7rem 1rem; }
.skip-link:focus { top: 1rem; }

.willow-header {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: 84px;
  padding: 1rem clamp(1rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  gap: 1rem;
  background: rgba(247, 248, 244, .82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(23, 71, 55, .35);
  transition: min-height .25s ease, padding .25s ease;
}
.willow-header.is-compact { min-height: 64px; padding-top: .55rem; padding-bottom: .55rem; }
.brand-mark { display: inline-flex; align-items: center; gap: .75rem; font-weight: 800; text-decoration: none; color: var(--willow-primary); }
.brand-mark img { width: 42px; height: 42px; border-radius: 50%; }
.primary-nav { margin-left: auto; display: flex; align-items: center; gap: 1.05rem; font-size: .88rem; }
.primary-nav a { text-decoration: none; color: var(--willow-muted); font-weight: 700; }
.primary-nav a.is-active, .primary-nav a:hover { color: var(--willow-primary); }
.header-cta, .button-primary, .button-secondary {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--willow-radius-small);
  padding: .75rem 1.05rem;
  text-decoration: none;
  font-weight: 800;
  border: 1px solid var(--willow-primary);
}
.header-cta, .button-primary { background: var(--willow-primary); color: white; }
.button-secondary { background: transparent; color: var(--willow-primary); }
.text-link { color: var(--willow-primary); font-weight: 800; text-underline-offset: .3em; }
.menu-toggle { display: none; margin-left: auto; width: 46px; height: 46px; border: 1px solid var(--willow-border); background: var(--willow-surface); border-radius: 8px; }
.menu-toggle span { display: block; width: 20px; height: 2px; margin: 5px auto; background: var(--willow-primary); }

section, .site-footer { padding: clamp(3.5rem, 7vw, 7rem) clamp(1rem, 4vw, 3rem); }
section > *, .site-footer > * { max-width: var(--willow-container); margin-left: auto; margin-right: auto; }
h1, h2, h3 { font-family: Georgia, "Times New Roman", serif; line-height: 1.05; margin: 0 0 1rem; font-weight: 700; letter-spacing: 0; }
h1 { font-size: clamp(3rem, 7vw, 6.8rem); max-width: 850px; }
h2 { font-size: clamp(2.2rem, 4vw, 4.4rem); }
h3 { font-size: clamp(1.35rem, 2vw, 2rem); }
p { margin: 0 0 1rem; }
.section-label, .category, .entry-badge {
  text-transform: uppercase;
  letter-spacing: .11em;
  font-size: .76rem;
  font-weight: 900;
  color: var(--willow-plum);
}
.section-intro { margin-bottom: 2.5rem; max-width: 760px; }

.hero-panel {
  min-height: calc(100vh - 84px);
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(320px, .72fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  background:
    radial-gradient(circle at 18% 20%, rgba(191, 211, 218, .5), transparent 32%),
    linear-gradient(115deg, #fffdf7 0%, #f7f8f4 58%, #edf2ec 100%);
}
.hero-copy > p:not(.section-label) { max-width: 700px; font-size: 1.14rem; }
.hero-actions, .hero-metrics { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }
.hero-metrics { margin-top: 2rem; border-top: 1px solid var(--willow-border); padding-top: 1rem; }
.hero-metrics strong { display: block; font-family: Georgia, serif; font-size: 2rem; color: var(--willow-primary); }
.hero-art { position: relative; max-width: 520px; justify-self: center; }
.hero-art::before, .hero-art::after { content: ""; position: absolute; inset: -22px 35px 38px; border: 1px solid rgba(182,151,91,.65); border-radius: var(--willow-radius-arch); pointer-events: none; }
.hero-art::after { inset: 22px -12px -10px; border-color: rgba(23,71,55,.22); }
.hero-art img { aspect-ratio: 5 / 7; border-radius: var(--willow-radius-arch); box-shadow: var(--willow-shadow-elevated); }
.edition-note { position: absolute; right: -2rem; bottom: 3rem; max-width: 230px; background: rgba(255,253,247,.88); border: 1px solid var(--willow-border); padding: 1rem; border-radius: 8px; box-shadow: var(--willow-shadow-soft); }
.edition-number { position: absolute; left: -1.2rem; top: 20%; writing-mode: vertical-rl; color: var(--willow-accent); font-weight: 900; }

.principles-line { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; padding-top: 2rem; padding-bottom: 2rem; }
.principles-line div { position: relative; border-top: 1px solid var(--willow-accent); padding: 1.3rem 1rem 0; font-weight: 800; }
.principles-line span { display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: .8rem; border-radius: 50%; background: var(--willow-surface); border: 1px solid var(--willow-accent); color: var(--willow-primary); }

.method-section, .highlights-section, .devices-section, .updates-section { background: var(--willow-surface); }
.method-chapters { display: grid; grid-template-columns: 1.2fr .88fr; gap: 1.4rem; align-items: start; }
.method-chapter { position: relative; min-height: 330px; padding: 2rem; border-left: 1px solid var(--willow-accent); background: linear-gradient(145deg, #fffdf7, #edf2ec); border-radius: 0 28px 28px 0; box-shadow: var(--willow-shadow-soft); }
.method-chapter.offset { margin-top: 4rem; }
.method-chapter.narrow { grid-column: 1 / -1; max-width: 760px; margin-left: auto; }
.chapter-number { font-family: Georgia, serif; font-size: 3.8rem; color: rgba(182,151,91,.5); }
.css-icon { display: inline-block; width: 38px; height: 38px; border: 2px solid var(--willow-primary); border-radius: 50%; }
.shield-icon { border-radius: 50% 50% 45% 45%; }
.interface-icon { box-shadow: inset 0 -12px 0 rgba(126,157,126,.4); }
.variety-icon { border-radius: 50% 8px 50% 8px; transform: rotate(45deg); }

.catalogue-list { display: grid; gap: 1.5rem; }
.game-entry { position: relative; display: grid; grid-template-columns: 280px 1fr; gap: 1.5rem; padding: 1.4rem; background: var(--willow-surface); border: 1px solid var(--willow-border); box-shadow: var(--willow-shadow-soft); }
.leader-entry { grid-template-columns: minmax(280px, 470px) 1fr; padding: 2rem; background: linear-gradient(120deg, #fffdf7 0%, #edf2ec 100%); }
.game-entry img { width: 100%; height: 100%; min-height: 300px; border-radius: var(--willow-radius-arch); border: 1px solid rgba(182,151,91,.55); }
.rank-medallion { position: absolute; top: 1rem; left: 1rem; z-index: 2; display: grid; place-items: center; width: 76px; height: 96px; border-radius: var(--willow-radius-arch); background: var(--willow-primary); color: white; font-family: Georgia, serif; font-size: 1.8rem; }
.feature-list { display: flex; flex-wrap: wrap; gap: .55rem; padding: 0; list-style: none; }
.feature-list li { border: 1px solid var(--willow-border); border-radius: 999px; padding: .3rem .65rem; background: rgba(255,255,255,.45); }
.measure { font-weight: 900; color: var(--willow-primary); }
.duo-rankings { display: grid; grid-template-columns: 1.12fr .88fr; gap: 1.5rem; }
.catalogue-rows { display: grid; gap: .85rem; }
.game-row { display: grid; grid-template-columns: 70px 130px 1fr auto; gap: 1rem; align-items: center; padding: 1rem; border-top: 1px solid var(--willow-border); background: rgba(255,253,247,.55); }
.game-row span, .highlight-grid span, .criteria-branches span, .steps-section span { color: var(--willow-accent); font-family: Georgia, serif; font-size: 2rem; font-weight: 700; }
.game-row img { height: 108px; width: 130px; border-radius: 50%; }
.game-row a { color: var(--willow-primary); font-weight: 900; }

.highlight-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 1rem; align-items: stretch; }
.highlight-grid article { position: relative; padding: 1rem; border: 1px solid var(--willow-border); background: #fffdf7; min-height: 220px; }
.highlight-grid img { height: 180px; width: 100%; border-radius: 90px 90px 12px 12px; }
.highlight-main { grid-row: span 2; }
.highlight-main img { height: 430px; }
.highlight-grid .small { background: var(--willow-surface-soft); }

.criteria-branches { position: relative; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.1rem 5rem; }
.criteria-branches::before { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: var(--willow-accent); }
.criteria-branches article { padding: 1.2rem; background: transparent; border-bottom: 1px solid var(--willow-border); }

.leader-feature { display: grid; grid-template-columns: 90px minmax(250px, 360px) 1fr 260px; gap: 1.5rem; align-items: start; background: linear-gradient(90deg, #edf2ec, #fffdf7); }
.leader-number { font-family: Georgia, serif; font-size: 5rem; color: var(--willow-accent); writing-mode: vertical-rl; }
.leader-feature img { min-height: 580px; border-radius: var(--willow-radius-arch); }
.leader-aside { border-left: 1px solid var(--willow-accent); padding-left: 1rem; }

.support-section { display: grid; grid-template-columns: 1fr 300px 220px; gap: 2rem; align-items: center; }
.support-section img { height: 460px; border-radius: 140px; }
.support-section aside { border: 1px solid var(--willow-border); border-radius: var(--willow-radius-arch); padding: 2rem 1.3rem; }

.collection-gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.collection-gallery .section-intro { grid-column: 1 / -1; }
.collection-gallery article { min-height: 250px; padding: 1rem; border: 1px solid var(--willow-border); background: rgba(255,253,247,.72); }
.collection-gallery img { height: 210px; width: 100%; margin-bottom: 1rem; border-radius: 90px 90px 12px 12px; }
.gallery-wide { grid-column: span 2; }
.gallery-tall { grid-row: span 2; }
.gallery-tall img { height: 430px; }

.benefit-ribbon { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; padding-top: 3rem; padding-bottom: 3rem; }
.benefit-ribbon article { padding: 1rem 1.2rem; border-left: 1px solid var(--willow-accent); }

.device-tabs { display: grid; grid-template-columns: 310px 1fr; gap: 2rem; align-items: start; }
.tab-list { display: grid; gap: .85rem; border-left: 1px solid var(--willow-accent); padding-left: 1rem; }
.tab-list button { text-align: left; min-height: 58px; border: 1px solid var(--willow-border); border-radius: 999px; background: #fffdf7; color: var(--willow-muted); font-weight: 900; padding: .7rem 1rem; cursor: pointer; }
.tab-list button[aria-selected="true"] { border-color: var(--willow-primary); color: var(--willow-primary); box-shadow: inset 0 0 0 3px rgba(23,71,55,.08); }
.tab-panel { min-height: 280px; padding: 2rem; background: linear-gradient(145deg, #fffdf7, #edf2ec); border: 1px solid var(--willow-border); border-radius: 120px 20px 20px 20px; }

.security-panel { background: var(--willow-surface-deep); color: #f8f4ea; }
.security-panel .section-label { color: #d9c18d; }
.security-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: .8rem; margin: 2rem auto; }
.security-grid p { border: 1px solid rgba(217,193,141,.38); padding: 1rem; border-radius: 8px; }

.steps-section ol { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.steps-section li { min-height: 190px; padding: 1.2rem; border: 1px solid var(--willow-border); border-radius: var(--willow-radius-arch); background: var(--willow-surface); font-weight: 800; }

.faq-list details { border-bottom: 1px solid var(--willow-border); padding: 1rem 0; }
.faq-list summary { cursor: pointer; font-weight: 900; font-size: 1.05rem; }
.faq-list p { max-width: 780px; }
.update-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.update-grid article { padding: 1.2rem; border: 1px solid var(--willow-border); background: var(--willow-surface); }
.update-grid a { color: var(--willow-primary); font-weight: 900; }

.contact-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 2rem; background: linear-gradient(145deg, #edf2ec, #fffdf7); }
.email-line { overflow-wrap: anywhere; font-weight: 900; color: var(--willow-primary); }
.contact-form { display: grid; gap: 1rem; padding: 1.3rem; background: var(--willow-surface); border: 1px solid var(--willow-border); box-shadow: var(--willow-shadow-soft); }
.contact-form label { display: grid; gap: .35rem; font-weight: 800; }
.contact-form input, .contact-form textarea { width: 100%; border: 1px solid var(--willow-border); border-radius: 8px; padding: .85rem; font: inherit; background: white; }
.check-row { grid-template-columns: auto 1fr !important; align-items: start; }
.check-row input { width: auto; margin-top: .38rem; }
.form-status { min-height: 1.5rem; font-weight: 800; color: var(--willow-plum); }

.final-cta { position: relative; text-align: center; overflow: hidden; background: radial-gradient(circle at 50% 0%, rgba(126,157,126,.5), transparent 45%), #edf2ec; }
.decor-letter { position: absolute; left: 4vw; top: -1rem; font-family: Georgia, serif; font-size: 16rem; color: rgba(182,151,91,.18); line-height: 1; }

.site-footer { background: var(--willow-primary); color: #f8f4ea; }
.footer-brand { display: grid; grid-template-columns: 54px 1fr; gap: 1rem; align-items: center; }
.footer-brand img { width: 54px; height: 54px; border-radius: 50%; }
.footer-brand p { grid-column: 1 / -1; max-width: 680px; }
.footer-links { display: flex; flex-wrap: wrap; gap: .9rem 1.3rem; margin-top: 1.4rem; margin-bottom: 1.4rem; }
.footer-links a { color: #f8f4ea; }

.cookie-banner { position: fixed; left: 1rem; right: 1rem; bottom: 1rem; z-index: 80; max-width: 880px; margin: auto; display: none; gap: .75rem; align-items: center; padding: 1rem; background: var(--willow-surface); border: 1px solid var(--willow-border); box-shadow: var(--willow-shadow-elevated); border-radius: 8px; }
.cookie-banner.is-visible { display: flex; }
.cookie-banner p { margin: 0; flex: 1; }
.cookie-banner button { min-height: 42px; border: 1px solid var(--willow-primary); border-radius: 8px; padding: .5rem .9rem; font-weight: 900; background: var(--willow-primary); color: white; }
.cookie-banner button:last-child { background: transparent; color: var(--willow-primary); }
.back-to-top { position: fixed; right: 1rem; bottom: 1rem; z-index: 70; width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--willow-primary); background: var(--willow-surface); color: var(--willow-primary); display: none; font-weight: 900; }
.back-to-top.is-visible { display: block; }
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

.internal-hero { background: linear-gradient(135deg, #fffdf7, #edf2ec); }
.content-page { max-width: 920px; margin: 0 auto; }
.content-page h2 { margin-top: 2rem; font-size: clamp(1.7rem, 3vw, 2.8rem); }
.content-page ul { padding-left: 1.2rem; }
.legal-date { font-weight: 900; color: var(--willow-primary); }

@media (max-width: 1080px) {
  .primary-nav, .header-cta { display: none; }
  .menu-toggle { display: block; }
  .primary-nav.is-open {
    position: fixed;
    inset: 72px 1rem auto;
    display: grid;
    gap: 0;
    background: var(--willow-surface);
    border: 1px solid var(--willow-border);
    box-shadow: var(--willow-shadow-elevated);
    padding: .75rem;
  }
  .primary-nav.is-open a { padding: .9rem; border-bottom: 1px solid var(--willow-border); }
  .hero-panel, .leader-feature, .support-section, .contact-section { grid-template-columns: 1fr; }
  .duo-rankings, .method-chapters, .device-tabs { grid-template-columns: 1fr; }
  .leader-feature img { min-height: 360px; }
  .leader-number { writing-mode: horizontal-tb; }
}

@media (max-width: 760px) {
  section, .site-footer { padding-left: 1rem; padding-right: 1rem; }
  .brand-mark span { max-width: 180px; line-height: 1.1; }
  .hero-panel { min-height: auto; grid-template-columns: 1fr; }
  .edition-note { position: static; margin-top: 1rem; }
  .principles-line, .highlight-grid, .criteria-branches, .benefit-ribbon, .security-grid, .steps-section ol, .update-grid, .collection-gallery { grid-template-columns: 1fr; }
  .principles-line div { border-left: 1px solid var(--willow-accent); border-top: 0; }
  .game-entry, .leader-entry { grid-template-columns: 1fr; padding: 1rem; }
  .game-row { grid-template-columns: 46px 86px 1fr; }
  .game-row a { grid-column: 2 / -1; }
  .game-row img { width: 86px; height: 86px; }
  .criteria-branches::before { left: 1rem; }
  .criteria-branches article { padding-left: 2.2rem; }
  .gallery-wide, .gallery-tall { grid-column: auto; grid-row: auto; }
  .gallery-tall img, .highlight-main img { height: 240px; }
  .cookie-banner { flex-direction: column; align-items: stretch; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
  .reveal { opacity: 1; transform: none; }
}