:root {
  /* Volunteer State Register v4 — limestone stone & controlled rust identity; river as secondary/CTA only */
  --tn-graphite:      #241F1A;
  --tn-graphite-2:    #332B23;

  --tn-limestone:     #8A7C64;
  --tn-limestone-2:   #A5967A;
  --tn-limestone-bg:  #EFEAE0;

  --tn-rust:          #A45F3F;
  --tn-rust-2:        #BC7652;
  --tn-rust-bg:       #EFE2D8;

  --tn-river:         #28566A;
  --tn-river-2:       #3D7084;
  --tn-river-bg:      #E4EEF1;

  --tn-green:         #4B6655;
  --tn-green-bg:      #E8EFEA;

  --tn-ivory:         #F1EEE6;
  --tn-parchment:     #E6E1D4;
  --tn-sand:          #D9D2C0;
  --tn-card:          #FFFFFF;
  --tn-rule:          #CFC6B0;
  --tn-rule-light:    #E2DCC9;

  --tn-text:          #241F1B;
  --tn-text-mid:      #4A4238;
  --tn-text-muted:    #6E6656;
  --tn-text-faint:    #9A917C;

  --tn-link:          #A45F3F;
  --tn-link-hover:    #241F1A;

  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans:  'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius-sm: 3px;
  --radius-md: 6px;
  --radius-lg: 11px;
  --shadow-sm: 0 1px 3px rgba(23,37,51,0.07), 0 2px 7px rgba(23,37,51,0.04);
  --shadow-md: 0 5px 18px rgba(23,37,51,0.10), 0 2px 6px rgba(23,37,51,0.05);
  --max-w: 1200px;
  --nav-h: 52px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-sans); background: var(--tn-ivory); color: var(--tn-text); line-height: 1.65; -webkit-font-smoothing: antialiased; font-size: 0.985rem; letter-spacing: -0.006em; }
a { color: var(--tn-link); text-decoration: none; }
a:hover { color: var(--tn-link-hover); text-decoration: underline; }
strong { font-weight: 600; color: inherit; }
.tn-wrap { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }
.tn-sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }
body { overflow-x: hidden; }

/* Top nav — full-bleed band, no clipping at desktop widths */
.tn-topnav { position: sticky; top: 0; z-index: 100; background: var(--tn-graphite); border-bottom: 2px solid var(--tn-rust); min-height: var(--nav-h); display: flex; align-items: center; width: 100%; }
.tn-topnav__inner { max-width: var(--max-w); margin: 0 auto; padding: 0 18px; display: flex; align-items: center; justify-content: space-between; width: 100%; gap: 14px; }
.tn-topnav__brand { font-family: var(--font-serif); font-size: 0.98rem; font-weight: 600; color: #fff; text-decoration: none; white-space: nowrap; flex-shrink: 0; line-height: 1; }
.tn-topnav__brand__sep { color: rgba(255,255,255,0.32); margin: 0 5px; font-family: var(--font-sans); font-weight: 300; font-size: 0.82rem; }
.tn-topnav__brand__state { color: var(--tn-limestone-2); font-family: var(--font-sans); font-size: 0.82rem; font-weight: 600; letter-spacing: 0.01em; }
.tn-topnav__links { display: flex; align-items: center; gap: 2px; overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch; flex-wrap: nowrap; white-space: nowrap; min-width: 0; }
.tn-topnav__links::-webkit-scrollbar { display: none; }
.tn-topnav__link { color: rgba(255,255,255,0.72); text-decoration: none; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.01em; padding: 7px 11px; border-radius: var(--radius-sm); flex-shrink: 0; }
.tn-topnav__link:hover { color: #fff; background: rgba(255,255,255,0.09); text-decoration: none; }
.tn-topnav__link--active { color: #fff; background: var(--tn-rust); }
@media (min-width: 1280px) {
  .tn-topnav__link { font-size: 0.83rem; padding: 8px 13px; }
}
@media (min-width: 1100px) and (max-width: 1279px) {
  .tn-topnav__inner { padding: 0 14px; gap: 8px; }
  .tn-topnav__links { flex-wrap: wrap; justify-content:flex-end; white-space:normal; }
  .tn-topnav__link { font-size: 0.8rem; padding: 8px 10px; }
  .tn-topnav__brand { font-size: 0.9rem; }
}
@media (max-width: 1099px) {
  .tn-topnav__inner { padding: 0 14px; }
  .tn-topnav__links { overflow-x: auto; }
  .tn-topnav__link { font-size: 0.76rem; padding: 7px 9px; }
}

/* Breadcrumb — full-bleed outer band, max-width inner content */
.tn-breadcrumb-band { width: 100%; background: var(--tn-parchment); border-bottom: 1px solid var(--tn-rule-light); }
.rr-breadcrumb.tn-breadcrumb { max-width: var(--max-w); margin: 0 auto; padding: 11px 18px 9px; font-size: 0.72rem; letter-spacing: 0.01em; color: var(--tn-text-faint); }
.tn-breadcrumb a { color: var(--tn-text-mid); font-weight: 500; }
.tn-breadcrumb a:hover { color: var(--tn-link-hover); text-decoration: none; }
.tn-breadcrumb .tn-crumb-sep { color: var(--tn-rule); margin: 0 7px; font-weight: 400; }
.tn-breadcrumb [aria-current="page"] { color: var(--tn-text-muted); }

/* Jumpnav — full-bleed outer band, max-width inner content */
.tn-jumpnav-band { width: 100%; border-bottom: 1px solid var(--tn-rule); background: var(--tn-card); box-shadow: inset 0 -1px 0 var(--tn-rule-light); }
.tn-jumpnav__inner { max-width: var(--max-w); margin: 0 auto; padding: 0 18px; display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none; }
.tn-jumpnav__inner::-webkit-scrollbar { display: none; }
.tn-jumpnav__link { flex-shrink: 0; font-size: 0.74rem; font-weight: 600; color: var(--tn-text-muted); padding: 10px 11px; border-bottom: 2px solid transparent; white-space: nowrap; }
.tn-jumpnav__link:hover { color: var(--tn-rust); text-decoration: none; border-bottom-color: var(--tn-rust-2); }

.tn-hero { position: relative; background: linear-gradient(155deg, var(--tn-ivory) 0%, var(--tn-parchment) 100%); border-top: 4px solid var(--tn-rust); padding: 34px 0 30px; overflow: hidden; }
.tn-hero::before { content: ""; position: absolute; top: 0; right: 0; width: 260px; height: 100%; background: radial-gradient(circle at 100% 0%, rgba(164,95,63,0.14), transparent 60%); pointer-events: none; }
.tn-hero__inner { position: relative; max-width: var(--max-w); margin: 0 auto; padding: 0 18px; display: grid; grid-template-columns: 1.6fr 1fr; gap: 32px; align-items: start; }
.tn-hero__content { border-left: 3px solid var(--tn-rust); padding-left: 18px; }
.tn-hero__eyebrow { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase; color: var(--tn-limestone); margin-bottom: 9px; }
.tn-hero__h1 { font-family: var(--font-serif); font-size: clamp(2rem, 4vw, 3.25rem); line-height: 1.14; color: var(--tn-graphite-2); margin-bottom: 11px; letter-spacing: -0.01em; }
.tn-hero__sub { font-size: 0.98rem; color: var(--tn-text-mid); max-width: 62ch; margin-bottom: 15px; }
.tn-hero__strip { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 13px; border-top: 1px dashed var(--tn-rule); padding-top: 12px; }
.tn-hero__pill { font-size: 0.72rem; font-weight: 700; padding: 5px 11px; border-radius: 999px; background: var(--tn-limestone-bg); color: var(--tn-limestone-2); border: 1px solid var(--tn-rule-light); }
.tn-hero__pill--rust { background: var(--tn-rust-bg); color: var(--tn-rust); border-color: rgba(164,95,63,0.35); }
.tn-hero__pill--green { background: var(--tn-green-bg); color: var(--tn-green); border-color: rgba(75,102,85,0.3); }
.tn-hero__pill--limestone { background: var(--tn-limestone-bg); color: var(--tn-limestone); border-color: rgba(143,128,98,0.35); }
.tn-hero__disclaimer { font-size: 0.76rem; color: var(--tn-text-faint); max-width: 62ch; }
.tn-stamp-card { background: var(--tn-card); border: 1px solid var(--tn-rule); border-top: 3px solid var(--tn-rust); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); overflow: hidden; }
.tn-stamp-card__head { background: var(--tn-graphite); color: #fff; padding: 13px 17px; }
.tn-stamp-card__state { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--tn-rust-2); font-weight: 700; }
.tn-stamp-card__type { font-family: var(--font-serif); font-size: 1.05rem; margin-top: 2px; }
.tn-stamp-card__rows { padding: 8px 17px; }
.tn-stamp-row { display: flex; justify-content: space-between; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--tn-rule-light); font-size: 0.82rem; }
.tn-stamp-row:last-child { border-bottom: none; }
.tn-stamp-row__label { color: var(--tn-text-muted); }
.tn-stamp-row__val { font-weight: 700; color: var(--tn-text); text-align: right; }
.tn-stamp-row--warn .tn-stamp-row__val { color: var(--tn-limestone); }
.tn-stamp-row--pine .tn-stamp-row__val { color: var(--tn-green); }
.tn-stamp-card__foot { padding: 10px 17px; font-size: 0.7rem; color: var(--tn-text-faint); border-top: 1px solid var(--tn-rule); background: var(--tn-parchment); }

main { padding-bottom: 10px; }
.tn-section { padding: 32px 0; border-bottom: 1px solid var(--tn-rule-light); }
.tn-section__header { display: grid; grid-template-columns: 130px 1fr; gap: 16px; margin-bottom: 18px; }
.tn-section__label { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--tn-rust-2); padding-top: 3px; position: relative; }
.tn-section__label::before { content: ""; display: inline-block; width: 14px; height: 2px; background: var(--tn-rust); margin-right: 6px; vertical-align: middle; }
.tn-section__h2 { font-family: var(--font-serif); font-size: clamp(1.55rem, 2.4vw, 2.2rem); color: var(--tn-graphite-2); margin-bottom: 6px; }
.tn-section__intro { color: var(--tn-text-mid); max-width: 72ch; font-size: 1rem; }
.tn-body p { margin-bottom: 12px; max-width: 74ch; font-size: 1rem; color: var(--tn-text); }
.tn-body ul, .tn-body ol { margin: 0 0 14px 20px; max-width: 74ch; font-size: 1rem; }
.tn-body li { margin-bottom: 6px; }
.tn-body h3 { font-family: var(--font-serif); font-size: 1.1rem; color: var(--tn-graphite-2); margin: 20px 0 9px; padding-bottom: 6px; border-bottom: 1px solid var(--tn-rule-light); }

.tn-grid2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-bottom: 6px; }
.tn-grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 6px; }
.tn-snapshot { background: var(--tn-card); border: 1px solid var(--tn-rule); border-radius: var(--radius-md); padding: 14px 16px; box-shadow: var(--shadow-sm); border-left: 3px solid var(--tn-limestone); }
.tn-snapshot--alert { border-color: var(--tn-limestone); border-left-color: var(--tn-limestone); background: var(--tn-limestone-bg); }
.tn-snapshot__label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 700; color: var(--tn-text-muted); margin-bottom: 5px; }
.tn-snapshot__val { font-weight: 700; font-size: 1.05rem; color: var(--tn-graphite-2); margin-bottom: 3px; }
.tn-snapshot__note { font-size: 0.78rem; color: var(--tn-text-mid); }

.tn-trap, .tn-caution, .tn-ok { border-radius: var(--radius-md); padding: 14px 17px; margin-bottom: 13px; border: 1px solid transparent; box-shadow: var(--shadow-sm); }
.tn-trap { border-left: 4px solid var(--tn-rust); border-top-color: rgba(164,95,63,0.2); border-right-color: rgba(164,95,63,0.2); border-bottom-color: rgba(164,95,63,0.2); background: var(--tn-rust-bg); }
.tn-trap__title { font-weight: 700; color: var(--tn-rust); margin-bottom: 5px; font-size: 0.88rem; }
.tn-trap__body { font-size: 0.88rem; color: var(--tn-text-mid); }
.tn-caution { border-left: 4px solid var(--tn-limestone); border-top-color: rgba(143,128,98,0.2); border-right-color: rgba(143,128,98,0.2); border-bottom-color: rgba(143,128,98,0.2); background: var(--tn-limestone-bg); }
.tn-caution__title { font-weight: 700; color: var(--tn-limestone); margin-bottom: 5px; font-size: 0.88rem; }
.tn-caution__body { font-size: 0.88rem; color: var(--tn-text-mid); }
.tn-ok { border-left: 4px solid var(--tn-green); border-top-color: rgba(75,102,85,0.2); border-right-color: rgba(75,102,85,0.2); border-bottom-color: rgba(75,102,85,0.2); background: var(--tn-green-bg); }
.tn-ok__title { font-weight: 700; color: var(--tn-green); margin-bottom: 5px; font-size: 0.88rem; }
.tn-ok__body { font-size: 0.88rem; color: var(--tn-text-mid); }

table.tn-table { width: 100%; border-collapse: collapse; margin-bottom: 14px; font-size: 0.86rem; box-shadow: var(--shadow-sm); }
table.tn-table th, table.tn-table td { border: 1px solid var(--tn-rule); padding: 10px 12px; text-align: left; }
table.tn-table th { background: var(--tn-graphite); color: #fff; font-weight: 600; font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.03em; }
table.tn-table tr:nth-child(even) td { background: var(--tn-parchment); }

.tn-cta { position: relative; background: var(--tn-river); border-radius: var(--radius-lg); padding: 28px 30px; color: #fff; margin: 6px 0 30px; border-top: 3px solid var(--tn-rust-2); overflow: hidden; }
.tn-cta::after { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 100% 100%, rgba(164,95,63,0.22), transparent 55%); pointer-events: none; }
.tn-cta__h2 { font-family: var(--font-serif); font-size: 1.32rem; margin-bottom: 6px; position: relative; }
.tn-cta__sub { color: rgba(255,255,255,0.8); font-size: 0.88rem; margin-bottom: 15px; max-width: 60ch; position: relative; }
.tn-email-form { display: flex; flex-wrap: wrap; gap: 8px; position: relative; }
.tn-email-form input[type="email"] { flex: 1 1 240px; padding: 11px 13px; border-radius: var(--radius-sm); border: 1px solid var(--tn-rule); font-size: 0.9rem; font-family: var(--font-sans); }
.tn-email-form button { background: var(--tn-rust); color: #fff; font-weight: 700; padding: 11px 18px; border: none; border-radius: var(--radius-sm); cursor: pointer; font-size: 0.9rem; }
.tn-email-form button:hover { background: var(--tn-rust-2); }
.tn-email-note { font-size: 0.76rem; color: rgba(255,255,255,0.68); margin-top: 9px; max-width: 60ch; position: relative; }
.tn-email-note a { color: var(--tn-limestone-bg); }
.tn-signup-message { display: none; padding: 10px 13px; border-radius: var(--radius-sm); font-weight: 600; line-height: 1.5; margin-top: 10px; position: relative; }
.tn-signup-message--success { display: block; color: var(--tn-green); background: var(--tn-green-bg); border: 1px solid var(--tn-green); }
.tn-signup-message--error { display: block; color: #7A2E2E; background: #FBEAEA; border: 1px solid #C46A6A; }

.tn-faq-item { border-bottom: 1px solid var(--tn-rule-light); padding: 13px 0; }
.tn-faq-btn { width: 100%; display: flex; justify-content: space-between; align-items: center; background: none; border: none; text-align: left; font-family: var(--font-sans); font-weight: 600; font-size: 0.92rem; color: var(--tn-graphite-2); cursor: pointer; padding: 0; }
.tn-faq-answer { font-size: 0.88rem; color: var(--tn-text-mid); margin-top: 8px; max-width: 74ch; }

.tn-allguides { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.tn-allguides a { display: block; background: var(--tn-card); border: 1px solid var(--tn-rule); border-left: 3px solid var(--tn-limestone); border-radius: var(--radius-md); padding: 11px 13px; font-size: 0.84rem; font-weight: 600; color: var(--tn-graphite-2); }
.tn-allguides a:hover { border-color: var(--tn-rust); border-left-color: var(--tn-rust); text-decoration: none; background: var(--tn-rust-bg); }

.tn-guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 6px; }
.tn-guide-card { display: flex; flex-direction: column; background: var(--tn-card); border: 1px solid var(--tn-rule); border-top: 3px solid var(--tn-limestone); border-radius: var(--radius-md); padding: 15px 16px; box-shadow: var(--shadow-sm); height: 100%; }
.tn-guide-card:hover { border-color: var(--tn-rust-2); border-top-color: var(--tn-rust-2); box-shadow: var(--shadow-md); }
.tn-guide-card__chip { align-self: flex-start; font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--tn-rust-2); background: var(--tn-limestone-bg); border-radius: 999px; padding: 3px 9px; margin-bottom: 9px; }
.tn-guide-card__title { font-family: var(--font-serif); font-size: 1.02rem; color: var(--tn-graphite-2); margin-bottom: 6px; line-height: 1.28; }
.tn-guide-card__desc { font-size: 0.83rem; color: var(--tn-text-mid); margin-bottom: 12px; flex-grow: 1; }
.tn-guide-card__open { font-size: 0.8rem; font-weight: 700; color: var(--tn-link); }
.tn-guide-card__open::after { content: " \2192"; margin-left: 5px; }
.tn-guide-group__label, h3.tn-guide-group__label { font-family: var(--font-serif); font-size: 1.06rem; color: var(--tn-graphite-2); margin: 26px 0 12px; padding-bottom: 6px; border-bottom: 2px solid var(--tn-rust); display: inline-block; }

.tn-footer { background: var(--tn-graphite); color: rgba(255,255,255,0.7); padding: 34px 0 22px; margin-top: 10px; }
.tn-footer__inner { max-width: var(--max-w); margin: 0 auto; padding: 0 18px; display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.tn-footer__heading { color: #fff; font-weight: 700; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 9px; }
.tn-footer a { color: rgba(255,255,255,0.62); display: block; margin-bottom: 6px; text-decoration: none; font-size: 0.82rem; }
.tn-footer a:hover { color: var(--tn-rust-2); }
.tn-footer__bottom { max-width: var(--max-w); margin: 22px auto 0; padding: 16px 18px 0; border-top: 1px solid rgba(255,255,255,0.12); font-size: 0.74rem; }
.tn-footer__disclaimer { max-width: 900px; margin-bottom: 7px; line-height: 1.6; color: rgba(255,255,255,0.55); }

@media (max-width: 860px) {
  .tn-hero__inner { grid-template-columns: 1fr; }
  .tn-hero__content { border-left: none; padding-left: 0; border-top: 3px solid var(--tn-rust); padding-top: 14px; }
  .tn-grid2, .tn-grid3, .tn-guide-grid { grid-template-columns: 1fr; }
  .tn-section__header { grid-template-columns: 1fr; }
  .tn-allguides { grid-template-columns: 1fr 1fr; }
  .tn-footer__inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .tn-allguides { grid-template-columns: 1fr; }
}

/* v4 additions: accessible FAQ accordion (was static always-open in v3) */
.tn-faq-answer { display: none; }
.tn-faq-btn[aria-expanded="true"] + .tn-faq-answer { display: block; }
.tn-faq-btn span:last-child { transition: transform 0.15s ease; }
.tn-faq-btn[aria-expanded="true"] span:last-child { transform: rotate(45deg); }

/* v4 additions: sources section */
.tn-sources-list { list-style: none; }
.tn-sources-list li { margin-bottom: 8px; padding-left: 16px; position: relative; }
.tn-sources-list li::before { content: "\2014"; position: absolute; left: 0; color: var(--tn-rust); }
.tn-sources-note { font-size: 0.8rem; color: var(--tn-text-faint); margin-top: 10px; }

/* v4: hub stage-resolver */
.tn-stage-resolver { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 6px 0 10px; }
.tn-stage-resolver a { display: block; background: var(--tn-card); border: 1px solid var(--tn-rule); border-left: 3px solid var(--tn-rust); border-radius: var(--radius-md); padding: 12px 14px; font-size: 0.86rem; color: var(--tn-graphite-2); font-weight: 600; }
.tn-stage-resolver a span { display: block; font-weight: 400; color: var(--tn-text-mid); font-size: 0.8rem; margin-top: 3px; }
.tn-stage-resolver a:hover { border-color: var(--tn-rust-2); text-decoration: none; background: var(--tn-rust-bg); }
@media (max-width: 720px) { .tn-stage-resolver { grid-template-columns: 1fr; } }

/* v4: legacy alias banner */
.tn-alias-banner { background: var(--tn-limestone-bg); border: 1px solid var(--tn-rule); border-left: 4px solid var(--tn-rust); border-radius: var(--radius-md); padding: 16px 18px; margin-bottom: 4px; }
.tn-alias-banner a { font-weight: 700; }

/* v4 responsive readability contract */
@media (max-width:480px){body,.tn-body p,.tn-body li,.tn-faq-answer,.tn-trap__body,.tn-caution__body,.tn-ok__body,.tn-guide-card__desc,.tn-stage-resolver a span,.tn-stamp-row,.tn-table{font-size:16px}.tn-topnav__link{min-height:42px;display:inline-flex;align-items:center}}