/* Windblade Codex — Where Winds Meet guide site
   Palette sampled from the official site stylesheet (see _research/visual.md).
   Light = rice paper, dark = ink wash. No generic template colours. */

@font-face {
  font-family: "Cormorant Garamond";
  font-style: normal;
  font-weight: 600 700;
  font-display: swap;
  src: url("fonts/cormorant-garamond-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url("fonts/inter-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --paper: #efe9dc;
  --paper-2: #e6ddc9;
  --panel: #f7f2e7;
  --ink: #1b1c20;
  --ink-soft: #6b675f;
  --line: #d5c7ae;
  --line-strong: #b39a6c;
  --gold: #8a6520;
  --gold-bright: #a57c4d;
  --gold-wash: #eadfc4;
  --vermilion: #b0472f;
  --jade: #4c6f63;
  --shadow: 0 3px 0 rgba(27, 28, 32, .10), 0 12px 28px rgba(27, 28, 32, .06);
  --radius: 3px;
  --wrap: 1120px;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-display: "Cormorant Garamond", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --font-cjk: "Songti SC", SimSun, "Noto Serif CJK SC", serif;
}

[data-theme="dark"] {
  --paper: #0e1118;
  --paper-2: #131722;
  --panel: #161a22;
  --ink: #edf6f9;
  --ink-soft: #a49d91;
  --line: #333a45;
  --line-strong: #7e6b45;
  --gold: #e9cf7a;
  --gold-bright: #d8c391;
  --gold-wash: #232733;
  --vermilion: #e07a5f;
  --jade: #8fbfae;
  --shadow: 0 3px 0 rgba(0, 0, 0, .35), 0 14px 30px rgba(0, 0, 0, .35);
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  background-image: repeating-linear-gradient(112deg, rgba(120, 114, 106, .035) 0 1px, transparent 1px 7px);
}

img, svg { max-width: 100%; }
a { color: var(--gold); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--vermilion); }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--panel); color: var(--ink);
  padding: .6rem 1rem; z-index: 200;
  border: 1px solid var(--line-strong);
}
.skip-link:focus { left: 1rem; top: 1rem; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 1.25rem; }
.cjk { font-family: var(--font-cjk); font-size: .92em; color: var(--ink-soft); }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-strong);
  box-shadow: 0 1px 0 var(--gold) inset;
}
.header-inner { display: flex; align-items: center; gap: 1rem; min-height: 68px; }

.brand { display: inline-flex; align-items: center; gap: .65rem; color: var(--ink); text-decoration: none; flex-shrink: 0; }
.brand:hover { color: var(--ink); }
.brand-mark {
  display: grid; place-items: center; width: 38px; height: 38px;
  border: 1px solid var(--line-strong);
  background: var(--panel);
  box-shadow: inset 0 0 0 3px var(--paper), 0 0 0 1px var(--gold) inset;
  color: var(--gold);
}
.brand-mark svg { width: 22px; height: 22px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; letter-spacing: .01em; }
.brand-sub { font-size: .68rem; color: var(--ink-soft); letter-spacing: .04em; text-transform: uppercase; }

.main-nav { display: flex; align-items: center; gap: .1rem; margin-left: auto; }
.main-nav > a, .nav-group > button {
  font: inherit; font-size: .85rem; font-family: var(--font-body);
  color: var(--ink-soft); background: none; border: 0; cursor: pointer;
  padding: .5rem .6rem; display: inline-flex; align-items: center; gap: .25rem;
  text-decoration: none;
}
.main-nav > a:hover, .nav-group > button:hover, .nav-group.is-open > button { color: var(--gold); }
.main-nav > a[aria-current="page"], .nav-group.is-current > button { color: var(--gold); font-weight: 600; }
.nav-group { position: relative; }
.nav-group > button svg { width: 10px; height: 10px; opacity: .55; }
.nav-menu {
  position: absolute; top: calc(100% + .6rem); left: 0;
  display: none; min-width: 260px; padding: .4rem;
  background: var(--panel); border: 1px solid var(--line-strong);
  box-shadow: inset 0 0 0 4px var(--panel), inset 0 0 0 5px var(--line), 0 14px 30px rgba(0, 0, 0, .12);
  z-index: 70;
}
.nav-group.is-open .nav-menu { display: block; }
.nav-menu a { display: block; padding: .5rem .6rem; color: var(--ink); text-decoration: none; font-size: .86rem; border-left: 2px solid transparent; }
.nav-menu a:hover { background: var(--gold-wash); border-left-color: var(--gold); color: var(--ink); }
.nav-menu a span { display: block; font-size: .72rem; color: var(--ink-soft); }

.header-actions { display: flex; gap: .35rem; margin-left: .25rem; }
.icon-btn {
  display: grid; place-items: center; width: 38px; height: 38px;
  border: 1px solid var(--line); background: var(--panel); color: var(--ink); cursor: pointer;
}
.icon-btn:hover { border-color: var(--gold); color: var(--gold); }
.icon-btn svg { width: 18px; height: 18px; }
.menu-btn { display: none; }

/* ---------- hero ---------- */
.hero { position: relative; padding: 3.4rem 0 1.6rem; overflow: hidden; }
.hero-ink { position: absolute; right: -40px; top: -10px; width: 420px; opacity: .5; pointer-events: none; }
.hero-inner { position: relative; max-width: 760px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: .45rem; margin: 0 0 1rem;
  padding: .22rem .7rem; border: 1px solid var(--line);
  background: var(--panel); color: var(--ink-soft);
  font-size: .72rem; letter-spacing: .12em; text-transform: uppercase;
}
.eyebrow::before { content: "\25C6"; color: var(--gold); font-size: .8em; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -.005em; }
h1 { font-family: var(--font-display); font-weight: 700; font-size: clamp(2.1rem, 5vw, 3.35rem); margin: 0 0 .8rem; }
h2 { font-family: var(--font-display); font-weight: 700; font-size: 1.6rem; margin: 0 0 .9rem; }
h3 { font-size: 1.02rem; font-weight: 600; margin: 0 0 .35rem; }
.lede { font-size: 1.05rem; color: var(--ink-soft); margin: 0 0 1.4rem; max-width: 64ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .6rem; }

.btn {
  display: inline-block; padding: .65rem 1.15rem;
  border: 1px solid var(--gold); background: var(--gold); color: var(--paper);
  text-decoration: none; font-weight: 600; font-size: .9rem;
  box-shadow: 2px 2px 0 var(--line-strong);
  transition: transform .12s ease, box-shadow .12s ease;
}
.btn:hover { color: var(--paper); transform: translate(1px, 1px); box-shadow: 1px 1px 0 var(--line-strong); }
.btn-ghost { background: transparent; color: var(--gold); box-shadow: none; border-color: var(--line-strong); }
.btn-ghost:hover { color: var(--ink); background: var(--panel); }

/* ---------- newsletter ---------- */
.newsletter {
  position: relative; margin: 1.6rem 0 .5rem; padding: 1.5rem 1.6rem;
  background: var(--panel);
  border: 1px solid var(--line-strong);
  box-shadow: inset 0 0 0 5px var(--panel), inset 0 0 0 6px var(--line), var(--shadow);
}
.newsletter::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(135deg, transparent 60%, var(--gold-wash) 100%);
  opacity: .5;
}
.newsletter-inner { position: relative; display: grid; grid-template-columns: 1fr minmax(280px, 420px); gap: 1.4rem; align-items: center; }
.newsletter h2 { font-size: 1.32rem; margin: 0 0 .35rem; }
.newsletter p { margin: 0; font-size: .9rem; color: var(--ink-soft); }
.nl-form { display: flex; gap: .4rem; }
.nl-form label { position: absolute; left: -9999px; }
.nl-form input[type="email"] {
  flex: 1; min-width: 0; padding: .62rem .75rem;
  border: 1px solid var(--line-strong); background: var(--paper); color: var(--ink);
  font: inherit; font-size: .9rem;
}
.nl-form input[type="email"]:focus { outline: 2px solid var(--gold); outline-offset: 1px; }
.nl-form button {
  border: 1px solid var(--gold); background: var(--gold); color: var(--paper);
  font: inherit; font-weight: 600; font-size: .88rem; padding: .62rem 1rem; cursor: pointer;
}
.nl-note { margin: .5rem 0 0; font-size: .74rem; color: var(--ink-soft); }
.nl-status { margin: .5rem 0 0; font-size: .8rem; color: var(--jade); }

/* ---------- sections + cards ---------- */
.section { padding: 2rem 0 1rem; }
.section-head { display: flex; align-items: baseline; gap: .8rem; flex-wrap: wrap; margin-bottom: 1rem; }
.section-head h2 { margin: 0; }
.section-head h2::before { content: "\25C6  "; color: var(--gold); font-size: .72em; }
.section-head p { margin: 0; color: var(--ink-soft); font-size: .88rem; }

.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(268px, 1fr)); gap: 1rem; }
.card {
  position: relative; display: flex; flex-direction: column;
  padding: 1.1rem 1.2rem; background: var(--panel);
  border: 1px solid var(--line); box-shadow: var(--shadow);
  color: var(--ink); text-decoration: none;
  transition: transform .12s ease, border-color .12s ease;
}
.card:hover { transform: translateY(-2px); border-color: var(--gold); color: var(--ink); }
.card::before { content: ""; position: absolute; inset: 5px; border: 1px solid var(--line); pointer-events: none; opacity: .6; }
.card-tag {
  align-self: flex-start; margin-bottom: .5rem; padding: .1rem .5rem;
  border: 1px solid var(--line-strong); color: var(--gold);
  font-size: .66rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
}
.card h3 { font-family: var(--font-display); font-size: 1.18rem; font-weight: 700; }
.card p { margin: 0; color: var(--ink-soft); font-size: .86rem; }

/* ---------- article ---------- */
.breadcrumb { padding: 1rem 0 0; font-size: .78rem; color: var(--ink-soft); }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: .4rem; list-style: none; margin: 0; padding: 0; }
.breadcrumb li + li::before { content: "\203A"; margin-right: .4rem; color: var(--line-strong); }
.breadcrumb a { color: var(--ink-soft); text-decoration: none; }
.breadcrumb a:hover { color: var(--gold); }

.article-head { padding: 1.4rem 0 .4rem; max-width: 800px; }
.article-head h1 { font-size: clamp(1.9rem, 4vw, 2.8rem); }
.meta-row { display: flex; flex-wrap: wrap; align-items: center; gap: .55rem; color: var(--ink-soft); font-size: .78rem; margin: 1rem 0 0; }
.badge { padding: .1rem .5rem; border: 1px solid var(--line-strong); background: var(--panel); font-size: .7rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; }
.badge-gold { color: var(--gold); border-color: var(--gold); }
.badge-warn { color: var(--vermilion); border-color: var(--vermilion); }

.keybox {
  position: relative; margin: 1.4rem 0 1.6rem; padding: 1.1rem 1.3rem;
  background: var(--panel); border: 1px solid var(--line-strong);
  box-shadow: inset 0 0 0 4px var(--panel), inset 0 0 0 5px var(--line);
}
.keybox h2 {
  font-family: var(--font-body); font-size: .74rem; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); margin: 0 0 .7rem;
}
.keybox dl { display: grid; grid-template-columns: minmax(120px, max-content) 1fr; gap: .45rem 1.2rem; margin: 0; font-size: .88rem; }
.keybox dt { color: var(--ink-soft); }
.keybox dd { margin: 0; }

.prose { max-width: 780px; padding-bottom: 1.5rem; }
.prose h2 { margin-top: 2.4rem; }
.prose h2::before { content: "\25C6  "; color: var(--gold); font-size: .7em; }
.prose h3 { margin-top: 1.6rem; color: var(--ink); }
.prose p { margin: .9rem 0; }
.prose ul, .prose ol { padding-left: 1.3rem; margin: .8rem 0; }
.prose li { margin: .35rem 0; }
.prose li::marker { color: var(--gold); }
.prose table { width: 100%; border-collapse: collapse; margin: 1.1rem 0; font-size: .86rem; background: var(--panel); }
.prose th, .prose td { border: 1px solid var(--line); padding: .55rem .7rem; text-align: left; vertical-align: top; }
.prose th { background: var(--gold-wash); font-weight: 600; }
.prose code { padding: .08rem .35rem; background: var(--paper-2); border: 1px solid var(--line); font-size: .88em; }
.prose blockquote { margin: 1.1rem 0; padding: .2rem 0 .2rem 1rem; border-left: 3px solid var(--gold); color: var(--ink-soft); font-size: .92rem; }
.prose .note {
  margin: 1.2rem 0; padding: .9rem 1.1rem;
  border: 1px solid var(--line); border-left: 3px solid var(--vermilion);
  background: var(--panel); font-size: .88rem;
}
.prose .note strong { color: var(--vermilion); }
.prose .answer { padding: 1rem 1.2rem; border: 1px solid var(--line); background: var(--panel); font-size: 1rem; }
.prose .answer p { margin: 0; }

.ad-slot {
  display: grid; place-items: center; margin: 1.6rem 0;
  min-height: 90px; border: 1px dashed var(--line-strong);
  color: var(--ink-soft); font-size: .68rem; letter-spacing: .18em; text-transform: uppercase;
  background: color-mix(in srgb, var(--panel) 50%, transparent);
}
.ad-slot.ad-rect { min-height: 250px; }

/* related links */
.related { margin: 2rem 0 0; padding: 1.3rem 0 0; border-top: 1px solid var(--line-strong); }
.related h2 { font-family: var(--font-body); font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); }
.related ul { list-style: none; padding: 0; margin: .6rem 0 0; display: grid; gap: .5rem; }
.related a { display: block; padding: .65rem .8rem; border: 1px solid var(--line); background: var(--panel); text-decoration: none; color: var(--ink); font-size: .88rem; }
.related a:hover { border-color: var(--gold); }
.related a span { display: block; color: var(--ink-soft); font-size: .76rem; }

/* timeline */
.rail { position: relative; margin: 1.4rem 0; padding-left: 1.4rem; border-left: 1px solid var(--line-strong); }
.rail-item { position: relative; padding: 0 0 1.3rem .2rem; }
.rail-item::before { content: ""; position: absolute; left: -1.62rem; top: .35rem; width: 9px; height: 9px; background: var(--gold); transform: rotate(45deg); }
.rail-item time { display: block; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-soft); }
.rail-item h3 { font-family: var(--font-display); font-size: 1.15rem; margin: .15rem 0 .3rem; }
.rail-item p { margin: 0; font-size: .88rem; }

/* diagrams */
.figure { margin: 1.7rem 0; overflow-x: auto; }
.figure svg { display: block; width: 100%; min-width: 540px; height: auto; }
.figure figcaption { margin-top: .55rem; font-size: .78rem; color: var(--ink-soft); }
.figure text { font-family: var(--font-body); }

/* footer */
.site-footer { margin-top: 3rem; border-top: 1px solid var(--line-strong); background: var(--panel); }
.footer-inner { display: grid; grid-template-columns: 1.1fr 2fr; gap: 2rem; padding-top: 2.2rem; padding-bottom: 1.6rem; }
.footer-brand { max-width: 320px; }
.footer-brand p { margin: .35rem 0 0; color: var(--ink-soft); font-size: .8rem; }
.footer-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.footer-cols a { display: block; color: var(--ink-soft); text-decoration: none; font-size: .82rem; padding: .14rem 0; }
.footer-cols a:hover { color: var(--gold); }
.footer-head { margin: 0 0 .45rem; font-size: .7rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--ink); }
.footer-base { padding-top: 1rem; padding-bottom: 1.8rem; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: .75rem; }
.footer-base p { margin: 0; }

/* cookie banner */
.cookie-bar {
  position: fixed; left: 1rem; right: 1rem; bottom: 1rem; z-index: 90;
  display: none; gap: 1rem; align-items: center; flex-wrap: wrap;
  max-width: 720px; margin: 0 auto; padding: .9rem 1.1rem;
  background: var(--panel); border: 1px solid var(--line-strong); box-shadow: var(--shadow);
  font-size: .82rem;
}
.cookie-bar.is-open { display: flex; }
.cookie-bar p { margin: 0; flex: 1 1 320px; color: var(--ink-soft); }
.cookie-bar .btn { padding: .4rem .8rem; font-size: .8rem; box-shadow: none; }

/* responsive */
@media (max-width: 1000px) {
  .brand-sub { display: none; }
  .newsletter-inner { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .menu-btn { display: grid; }
  .main-nav {
    display: none; position: absolute; left: 1rem; right: 1rem; top: calc(100% + .5rem);
    max-height: 72vh; overflow-y: auto; padding: .6rem;
    background: var(--panel); border: 1px solid var(--line-strong); box-shadow: var(--shadow);
    flex-direction: column; align-items: stretch; margin-left: 0;
  }
  .main-nav.is-open { display: flex; }
  .header-inner { position: relative; }
  .main-nav > a, .nav-group > button { padding: .6rem .5rem; text-align: left; border-bottom: 1px solid var(--line); }
  .nav-menu { position: static; display: block; min-width: 0; padding: 0 0 .3rem .6rem; border: 0; box-shadow: none; background: transparent; }
  .nav-group > button svg { display: none; }
  .keybox dl { grid-template-columns: 1fr; gap: .1rem; }
  .keybox dd { margin-bottom: .6rem; }
  .prose table { display: block; overflow-x: auto; }
  .hero-ink { display: none; }
  .footer-cols { grid-template-columns: repeat(2, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}

@media print {
  .site-header, .site-footer, .newsletter, .ad-slot, .cookie-bar, .hero-ink { display: none; }
}