/* Metadata's own visual system: warm white, forest green, technical typography. */
:root {
  --bg: #fbfdf9;
  --surface: #fff;
  --surface-raised: #f1f8ef;
  --text-main: #183021;
  --text-muted: #526957;
  --primary: #20743a;
  --primary-deep: #176531;
  --primary-dark: #155c2c;
  --accent-blue: #2e7b63;
  --border-color: #d2e4d3;
  --bg-card: #fff;
  --bg-slate: #eef7ec;
  --primary-light: #eaf6e7;
  --radius-card: 4px;
  --radius-sm: 3px;
  --shadow-sm: none;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text-main); font-family: "DM Sans", sans-serif; line-height: 1.6; }
button, input { font: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 4px; }
::selection { background: var(--primary); color: #fff; }
.container { width: min(100% - 48px, 1200px); margin-inline: auto; }
.site-header { position: relative; z-index: 10; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--border-color); }
.header-inner { min-height: 78px; display: flex; align-items: center; gap: 48px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-family: "Space Grotesk", sans-serif; font-size: 1.48rem; font-weight: 700; letter-spacing: -.06em; white-space: nowrap; }
.brand-symbol { display: grid; place-items: center; width: 39px; height: 39px; border: 1px solid var(--primary); color: var(--primary); font: 600 1.1rem "IBM Plex Mono", monospace; letter-spacing: -.2em; padding-right: 3px; }
.brand-dot, .footer-brand span { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 38px; margin-left: auto; }
.nav-links a { color: var(--text-muted); font-size: .88rem; font-weight: 600; transition: color .2s; }
.nav-links a:hover { color: var(--primary); }
.header-cta { display: inline-flex; justify-content: space-between; align-items: center; gap: 24px; padding: 11px 16px; border: 1px solid var(--primary); color: var(--primary); font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; transition: background .2s, color .2s; }
.header-cta:hover { color: #fff; background: var(--primary); }
.mobile-toggle { display: none; }

.hero { overflow: hidden; border-bottom: 1px solid var(--border-color); background: radial-gradient(ellipse at 72% 50%, #e7f7e6 0%, var(--bg) 65%); }
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 70px; align-items: center; min-height: 620px; padding-block: 90px; }
.hero-copy { position: relative; z-index: 1; }
.eyebrow, .section-top, .panel-kicker, .panel-status, .art-top, .art-bottom, .art-coordinate, .hero-proof, .method-number, .footer-note { font-family: "IBM Plex Mono", monospace; font-size: .68rem; font-weight: 500; letter-spacing: .11em; }
.eyebrow { color: var(--primary); display: inline-flex; align-items: center; gap: 12px; }
.eyebrow-index { color: var(--text-muted); margin-left: 8px; }
.signal-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 4px rgba(32,116,58,.12); vertical-align: middle; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: "Space Grotesk", sans-serif; }
.hero h1 { font-size: clamp(4.1rem, 7.2vw, 7.8rem); line-height: .97; letter-spacing: -.09em; margin: 30px 0; }
.hero h1 span, .workspace-heading h2 span, .method-section h2 span { color: var(--primary); }
.hero-description { color: var(--text-muted); font-size: 1.06rem; max-width: 490px; line-height: 1.8; }
.hero-link { display: inline-flex; gap: 28px; align-items: center; border-bottom: 1px solid var(--primary); padding: 12px 0; margin-top: 15px; color: var(--primary); font-weight: 700; }
.hero-link:hover { gap: 36px; }
.hero-proof { display: flex; align-items: center; gap: 10px; color: var(--text-muted); margin-top: 70px; letter-spacing: .01em; }
.proof-icon { color: var(--primary); font-size: 1.5rem; }
.hero-art { position: relative; min-height: 470px; border: 1px solid #bddcbd; overflow: hidden; background-color: #f1faef; background-image: linear-gradient(rgba(46,123,63,.085) 1px, transparent 1px), linear-gradient(90deg,rgba(46,123,63,.085) 1px,transparent 1px); background-size: 32px 32px; }
.hero-art::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 50% 50%, rgba(32,116,58,.09), transparent 58%); }
.art-top, .art-bottom { position: absolute; left: 25px; right: 25px; display: flex; justify-content: space-between; gap: 12px; color: var(--text-muted); }
.art-top { top: 23px; }.art-bottom { bottom: 22px; }
.art-top .signal-dot { width: 5px; height: 5px; margin-left: 7px; }
.art-orbit { position: absolute; border: 1px solid rgba(32,116,58,.2); border-radius: 50%; top: 50%; left: 50%; transform: translate(-50%,-50%); }
.orbit-one { width: 230px; height: 230px; }.orbit-two { width: 345px; height: 345px; }.orbit-three { width: 470px; height: 470px; }
.art-core { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 180px; height: 180px; display: flex; flex-direction: column; justify-content: center; align-items: center; background: var(--primary); color: #fff; box-shadow: 0 20px 70px rgba(32,116,58,.22); }
.core-glyph { font: 700 4.5rem "IBM Plex Mono", monospace; letter-spacing: -.24em; padding-right: 18px; line-height: 1.25; }
.core-caption { font: 600 .56rem "IBM Plex Mono", monospace; letter-spacing: .16em; }
.core-cross { position: absolute; top: 7px; right: 11px; font: 1rem "IBM Plex Mono", monospace; }
.art-coordinate { position: absolute; color: var(--primary); }.art-coordinate-a { top: 31%; left: 25px; }.art-coordinate-b { bottom: 29%; right: 25px; }

.workspace-section, .method-section, .guide-section { padding: 90px 0 110px; }
.workspace-section { background: #f1f8f0; }
.section-top { display: flex; align-items: center; gap: 18px; color: var(--primary); white-space: nowrap; }
.section-rule { flex: 1; height: 1px; background: var(--border-color); }
.section-meta { color: var(--text-muted); }
.workspace-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin: 52px 0 42px; }
.workspace-heading h2, .method-section h2 { font-size: clamp(2.8rem, 5vw, 5.1rem); line-height: 1.04; letter-spacing: -.065em; margin: 0 0 22px; }
.workspace-heading p { max-width: 580px; margin: 0; color: var(--text-muted); line-height: 1.8; }
.workspace-mark { font: 400 5rem "Space Grotesk", sans-serif; color: var(--primary); line-height: 1; }
.guide-section { background: #fff; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.guide-layout { display: grid; grid-template-columns: .88fr 1.12fr; align-items: start; gap: clamp(32px, 6vw, 100px); margin-top: 54px; }
.guide-label { display: inline-block; color: var(--primary); font: 600 .73rem "IBM Plex Mono", monospace; letter-spacing: .12em; margin-bottom: 18px; }
.guide-intro h2 { font-size: clamp(2.8rem, 4.7vw, 4.7rem); line-height: 1.08; letter-spacing: -.065em; margin: 0 0 24px; }
.guide-intro h2 span { color: var(--primary); }
.guide-intro > p { color: var(--text-muted); line-height: 1.85; max-width: 470px; }
.guide-note { display: flex; gap: 16px; margin-top: 35px; border: 1px solid #b5d8b5; background: var(--primary-light); padding: 18px; }
.guide-note > span { flex: 0 0 30px; display: grid; place-items: center; width: 30px; height: 30px; background: var(--primary); color: #fff; font: 600 1rem "IBM Plex Mono", monospace; }
.guide-note p { margin: 0; font-size: .87rem; line-height: 1.7; }
.guide-steps ol { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--border-color); }
.guide-steps li { display: flex; align-items: baseline; gap: 22px; padding: 19px 0; border-bottom: 1px solid var(--border-color); }
.step-number { color: var(--primary); font: 600 .8rem "IBM Plex Mono", monospace; }
.guide-steps li p { margin: 0; color: var(--text-muted); font-size: .93rem; line-height: 1.7; }
.guide-steps strong { color: var(--text-main); }
.guide-after { margin: 24px 0 0; color: var(--text-muted); font-size: .86rem; line-height: 1.8; }
.guide-after a { color: var(--primary); font-weight: 700; text-decoration: underline; text-underline-offset: 3px; }
.method-section { background: var(--bg); }
.method-section h2 { margin: 53px 0 40px; }
.method-grid { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--border-color); }
.method-card { padding: 30px; min-height: 270px; border-right: 1px solid var(--border-color); background: var(--surface); }
.method-card:last-child { border: 0; }
.method-number { color: var(--primary); }
.method-icon { display: block; font: 500 2.4rem "IBM Plex Mono", monospace; color: var(--primary); margin: 30px 0 22px; }
.method-card h3 { font-size: 1.25rem; margin-bottom: 8px; letter-spacing: -.03em; }
.method-card p { color: var(--text-muted); line-height: 1.75; font-size: .89rem; margin: 0; }
.site-footer { border-top: 1px solid var(--border-color); padding: 42px 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: end; gap: 24px; }
.footer-brand { font: 700 1.7rem "Space Grotesk", sans-serif; letter-spacing: -.065em; }
.footer-inner p { color: var(--text-muted); margin: 3px 0 0; font-size: .88rem; }
.footer-note { color: var(--text-muted); line-height: 1.9; text-align: right; }

@media (max-width: 980px) {
  .hero-grid { gap: 30px; }.hero-art { min-height: 400px; }
  .nav-links { gap: 18px; }.header-inner { gap: 22px; }
}
@media (max-width: 760px) {
  .container { width: min(100% - 36px, 1200px); }
  .header-inner { min-height: 68px; justify-content: space-between; }
  .header-cta { display: none; }
  .mobile-toggle { display: flex; flex-direction: column; justify-content: center; gap: 5px; border: 1px solid var(--border-color); background: transparent; width: 40px; height: 40px; padding: 10px; }
  .mobile-toggle span { display: block; height: 2px; background: var(--primary); }
  .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; align-items: stretch; background: var(--surface); border-bottom: 1px solid var(--border-color); margin: 0; padding: 18px; }
  .nav-links.active { display: flex; }.nav-links a { padding: 7px; }
  .hero-grid { grid-template-columns: 1fr; padding-block: 70px; min-height: 0; }
  .hero h1 { font-size: clamp(4.3rem, 12vw, 6.5rem); }.hero-proof { margin-top: 38px; }
  .hero-art { min-height: 340px; }.art-coordinate { display: none; }
  .workspace-section, .method-section, .guide-section { padding: 65px 0 75px; }
  .workspace-heading { margin-top: 34px; }.workspace-mark { display: none; }
  .guide-layout { grid-template-columns: 1fr; gap: 32px; margin-top: 38px; }
  .method-grid { grid-template-columns: 1fr; }.method-card { min-height: 0; border-right: 0; border-bottom: 1px solid var(--border-color); }
  .footer-inner { align-items: start; flex-direction: column; }.footer-note { text-align: left; }
}
@media (max-width: 430px) {
  .hero h1 { font-size: 3.85rem; }.hero-art { min-height: 300px; }
  .section-meta { display: none; }.art-top, .art-bottom { font-size: .52rem; left: 14px; right: 14px; }
}