/* ============================================================
   GTBuy Spreadsheet — "Sourcing Atlas" design system
   Editorial / cartographic field-guide. Warm paper + burnt orange.
   Distinct from sisters (bento / ledger / zine).
   ============================================================ */

:root{
  /* brand (official, from gtbuy.com logo) */
  --orange:#EB6519;         /* GTBuy primary */
  --orange-ink:#B8480D;     /* AA-safe orange for text/links on paper */
  --orange-soft:#FBE6D6;    /* tint */
  --ink:#231815;            /* brand warm near-black */
  --pine:#123E38;           /* cool complement — route ink */
  --pine-soft:#DCE9E4;
  --verify:#3F7A4E;         /* success/verify green */

  /* light surfaces — clean white, matching gtbuy.com */
  --bg:#FFFFFF;             /* official is white */
  --surface:#FFFFFF;
  --surface-2:#F5F6F8;      /* sunk panel — cool light gray */
  --border:#ECEDF0;
  --border-strong:#DDE0E5;
  --text:#231815;
  --muted:#5C616B;          /* AA on white */
  --muted-2:#8A8F98;
  --sky:#EAF2F8;            /* hero sky tint */

  /* type */
  --font-display:"Bricolage Grotesque",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-body:"IBM Plex Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --font-mono:"Spline Sans Mono","SFMono-Regular",Menlo,Consolas,monospace;

  /* scale */
  --maxw:1120px;
  --radius:14px;
  --radius-sm:9px;
  --shadow:0 1px 2px rgba(35,24,21,.05), 0 10px 30px -18px rgba(35,24,21,.28);
  --shadow-lg:0 24px 60px -28px rgba(35,24,21,.4);
  --ring:0 0 0 3px rgba(235,101,25,.35);
  --z-nav:50;
}

@media (prefers-color-scheme:dark){
  :root{
    --orange:#FF7A33;
    --orange-ink:#FF9457;
    --orange-soft:#3A2416;
    --ink:#F5EEE6;
    --pine:#5FBFAE;
    --pine-soft:#173430;
    --verify:#6FC17E;
    --bg:#1A1512;
    --surface:#241D18;
    --surface-2:#2C231D;
    --border:#3A2F27;
    --border-strong:#4A3C31;
    --text:#F5EEE6;
    --muted:#B8A899;
    --muted-2:#9A8877;
    --sky:#12222b;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 14px 34px -20px rgba(0,0,0,.7);
    --shadow-lg:0 26px 64px -30px rgba(0,0,0,.8);
  }
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation-duration:.001ms!important;transition-duration:.001ms!important}}

body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font-body);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

/* official look = clean white, no global texture */

/* ---------- typography ---------- */
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.05;letter-spacing:-.02em;color:var(--ink);margin:0 0 .5em}
h1{font-size:clamp(2.4rem,6.2vw,4.4rem)}
h2{font-size:clamp(1.7rem,3.6vw,2.6rem);letter-spacing:-.025em}
h3{font-size:clamp(1.15rem,2vw,1.45rem);font-weight:700}
h4{font-size:1.02rem;font-weight:700}
p{margin:0 0 1rem;max-width:68ch}
a{color:var(--orange-ink);text-decoration-color:color-mix(in srgb,var(--orange-ink) 40%,transparent);text-underline-offset:3px}
a:hover{text-decoration-color:var(--orange-ink)}
strong{font-weight:600;color:var(--ink)}
small{font-size:.82rem}

.eyebrow,.coord{font-family:var(--font-mono);font-size:.72rem;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.coord{color:var(--orange-ink)}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.section{padding:clamp(3.2rem,7vw,6rem) 0}
.section--tight{padding:clamp(2.2rem,5vw,3.6rem) 0}
.divider{height:1px;background:var(--border);border:0;margin:0}
.lead{font-size:clamp(1.05rem,1.6vw,1.25rem);color:var(--muted);max-width:60ch}
.center{text-align:center;margin-left:auto;margin-right:auto}
.stack>*+*{margin-top:1rem}

/* ---------- skip link ---------- */
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;border-radius:0 0 8px 0;z-index:100}
.skip:focus{left:0}

/* ---------- header / nav ---------- */
.nav{position:sticky;top:0;z-index:var(--z-nav);background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav__inner{max-width:var(--maxw);margin:0 auto;padding:11px 22px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:800;font-size:1.12rem;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.brand img{height:30px;width:auto;display:block}
.brand .tag{font-family:var(--font-mono);font-size:.6rem;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;padding:2px 6px;border:1px solid var(--border-strong);border-radius:5px}
.nav__links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav__links a{font-size:.92rem;font-weight:500;color:var(--text);text-decoration:none;padding:8px 12px;border-radius:8px;line-height:1}
.nav__links a:hover{background:var(--surface-2);color:var(--ink)}
.nav__links a[aria-current="page"]{color:var(--orange-ink);background:var(--orange-soft)}
.nav__cta{display:inline-flex;align-items:center;gap:6px;background:var(--ink);color:var(--bg)!important;padding:9px 15px!important;border-radius:9px;font-weight:600!important}
.nav__cta:hover{background:var(--orange);color:#fff!important}
.nav__toggle{display:none;margin-left:auto;background:var(--surface);border:1px solid var(--border-strong);border-radius:9px;width:44px;height:44px;cursor:pointer;color:var(--ink)}
.nav__toggle svg{width:22px;height:22px}

@media (max-width:900px){
  .nav__toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav__links{position:fixed;inset:60px 12px auto 12px;flex-direction:column;align-items:stretch;gap:4px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:12px;box-shadow:var(--shadow-lg);display:none}
  .nav__links.open{display:flex}
  .nav__links a{padding:13px 14px;font-size:1rem}
  .nav__cta{justify-content:center;margin-top:4px}
}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font-body);font-weight:600;font-size:.98rem;line-height:1;padding:14px 22px;border-radius:11px;border:1px solid transparent;cursor:pointer;text-decoration:none;transition:background .2s,color .2s,border-color .2s,transform .1s;min-height:48px}
.btn:active{transform:translateY(1px)}
.btn--primary{background:var(--orange);color:#fff;box-shadow:0 8px 22px -12px var(--orange)}
.btn--primary:hover{background:#d4570f;color:#fff}
.btn--ink{background:var(--ink);color:var(--bg)}
.btn--ink:hover{background:#3a2a24;color:var(--bg)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--border-strong)}
.btn--ghost:hover{border-color:var(--ink);background:var(--surface)}
.btn--sm{padding:9px 15px;min-height:40px;font-size:.9rem;border-radius:9px}
.btn__ext::after{content:"↗";font-family:var(--font-mono);font-size:.85em;opacity:.8}

/* ---------- hero ---------- */
.hero{position:relative;padding:clamp(2.6rem,6vw,4.6rem) 0 clamp(2.4rem,5vw,3.6rem)}
.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(1.6rem,4vw,3rem);align-items:center}
.hero h1{margin-bottom:.35em}
.hero h1 .hl{color:var(--orange-ink);position:relative;white-space:nowrap}
.hero__ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:1.6rem}
.hero__meta{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:1.5rem}
.hero__meta span{display:inline-flex;align-items:center;gap:7px;font-size:.86rem;color:var(--muted)}
.hero__meta svg{width:16px;height:16px;color:var(--verify)}
@media (max-width:860px){.hero__grid{grid-template-columns:1fr;gap:2rem}}

/* ---------- official-style hero (plane + warehouse, matches gtbuy.com) ---------- */
.ohero{position:relative;overflow:hidden;background:linear-gradient(155deg,var(--sky) 0%,#fff 58%);border-bottom:1px solid var(--border)}
.ohero__art{position:absolute;top:0;right:0;height:100%;width:auto;max-width:70%;object-fit:cover;object-position:right center;z-index:0;pointer-events:none;user-select:none}
.ohero::after{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;background:linear-gradient(90deg,var(--bg) 22%,color-mix(in srgb,var(--bg) 55%,transparent) 44%,transparent 66%)}
.ohero__inner{position:relative;z-index:1;padding:clamp(2.4rem,5vw,4.2rem) 0 clamp(2rem,4vw,3rem)}
.ohero__text{max-width:620px}
.ohero h1{margin:.1em 0 .35em}
.ohero h1 .hl{color:var(--orange-ink)}
.ohero .lead{max-width:44ch}
.osearch{display:flex;align-items:center;gap:6px;background:var(--surface);border:1px solid var(--border-strong);border-radius:999px;padding:6px 6px 6px 22px;max-width:600px;box-shadow:var(--shadow-lg);margin-top:1.7rem}
.osearch input{flex:1;min-width:0;border:0;background:transparent;font-size:1.05rem;padding:13px 0;color:var(--text);outline:none;font-family:var(--font-body)}
.osearch button{flex:none;border-radius:999px;min-height:50px;padding:0 26px}
.otabs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px;align-items:center}
.otab{display:inline-flex;align-items:center;gap:6px;font-size:.86rem;font-weight:500;text-decoration:none;padding:8px 15px;border-radius:999px;border:1px solid var(--border-strong);background:var(--surface);color:var(--ink);min-height:38px}
.otab:hover{border-color:var(--orange);color:var(--orange-ink)}
.otab--pick{background:var(--ink);color:var(--bg);border-color:var(--ink);font-family:var(--font-mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase}
.otab--pick:hover{background:var(--orange);border-color:var(--orange);color:#fff}
.oflow{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:2.2rem;max-width:760px}
.ostep{background:color-mix(in srgb,var(--surface) 86%,transparent);border:1px solid var(--border);border-radius:14px;padding:16px;backdrop-filter:blur(3px)}
.ostep__h{display:flex;align-items:center;gap:10px;margin-bottom:9px}
.ostep__n{flex:none;width:28px;height:28px;border-radius:50%;background:var(--orange);color:#fff;font-family:var(--font-mono);font-weight:500;font-size:.85rem;display:flex;align-items:center;justify-content:center}
.ostep__h b{font-family:var(--font-display);font-size:1rem;color:var(--ink)}
.ostep ul{list-style:none;margin:0;padding:0;display:grid;gap:5px}
.ostep li{font-size:.83rem;color:var(--muted);padding-left:14px;position:relative;line-height:1.4}
.ostep li::before{content:"";position:absolute;left:0;top:8px;width:5px;height:5px;border-radius:50%;background:var(--orange)}
@media (max-width:900px){
  .ohero__art{max-width:100%;height:auto;width:118%;right:-9%;top:auto;bottom:0;opacity:.5}
  .ohero::after{background:linear-gradient(180deg,var(--bg) 40%,color-mix(in srgb,var(--bg) 60%,transparent) 100%)}
  .oflow{grid-template-columns:1fr;max-width:520px}
}
@media (max-width:560px){.osearch{flex-wrap:wrap;border-radius:18px;padding:12px}.osearch input{width:100%;padding:8px 6px}.osearch button{width:100%}}

/* ---------- search hero (echoes official gtbuy.com) ---------- */
.hero-search{position:relative;padding:clamp(2.6rem,6vw,4.4rem) 0 clamp(2rem,4vw,3rem);text-align:center}
.hero-search .wrap{max-width:940px}
.hero-search h1{margin:.15em auto .4em;max-width:16ch}
.hero-search h1 .hl{color:var(--orange-ink)}
.hero-search .lead{margin-left:auto;margin-right:auto}
.searchbox{background:var(--surface);border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow-lg);padding:16px;max-width:760px;margin:1.9rem auto 0;text-align:left}
.searchbox__tabs{display:flex;gap:4px;margin-bottom:14px;flex-wrap:wrap}
.searchbox__tab{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);background:transparent;border:0;border-radius:8px;padding:8px 12px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:7px;min-height:40px}
.searchbox__tab.on{background:var(--orange-soft);color:var(--orange-ink)}
.searchbox__tab:not(.on):hover{background:var(--surface-2);color:var(--ink)}
.searchbox__row{display:flex;gap:8px;align-items:stretch}
.searchbox__row input{flex:1;min-width:0;min-height:54px;padding:0 18px;border:1px solid var(--border-strong);border-radius:13px;background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:1.05rem}
.searchbox__row input:focus{outline:none;border-color:var(--orange);box-shadow:var(--ring)}
.searchbox__row .btn{min-height:54px;padding:0 24px;border-radius:13px;flex:none}
.searchbox__foot{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:14px}
.searchbox__foot .lbl{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.plat-row{display:inline-flex;flex-wrap:wrap;gap:7px;justify-content:center;margin-top:6px}
.plat{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-mono);font-size:.78rem;color:var(--ink);background:var(--surface);border:1px solid var(--border-strong);border-radius:9px;padding:7px 12px}
.plat i{width:9px;height:9px;border-radius:50%;display:inline-block}
@media (max-width:560px){.searchbox__row{flex-direction:column}.searchbox__row .btn{width:100%}}

/* ---------- route diagram (hero visual) ---------- */
.routemap{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:22px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.routemap__label{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.routemap__label .coord{color:var(--muted)}
.routemap__pin{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--pine);border:1px solid var(--border-strong);border-radius:6px;padding:3px 7px}
.rm-sources{display:flex;gap:8px;margin-bottom:14px}
.rm-src{flex:1;text-align:center;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:10px 6px;font-family:var(--font-mono);font-size:.72rem;font-weight:500;color:var(--ink);letter-spacing:.02em}
.rm-src b{display:block;font-family:var(--font-display);font-size:.92rem;color:var(--orange-ink);letter-spacing:0}
.rm-line{height:2px;background:repeating-linear-gradient(90deg,var(--border-strong) 0 6px,transparent 6px 12px);margin:0 8px}
.rm-stops{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-direction:column;gap:2px}
.rm-stops li{display:flex;align-items:center;gap:12px;padding:9px 4px}
.rm-stops .n{flex:none;width:30px;height:30px;border-radius:50%;background:var(--ink);color:var(--bg);font-family:var(--font-mono);font-size:.82rem;font-weight:500;display:flex;align-items:center;justify-content:center}
.rm-stops li:last-child .n{background:var(--orange);color:#fff}
.rm-stops .t{font-size:.92rem;font-weight:500}
.rm-stops .t small{display:block;color:var(--muted);font-weight:400;font-size:.78rem}
.rm-connector{width:2px;height:14px;background:repeating-linear-gradient(var(--border-strong) 0 4px,transparent 4px 8px);margin-left:18px}

/* ---------- cards / plates ---------- */
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:860px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

.plate{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);position:relative;display:flex;flex-direction:column}
.plate--link{text-decoration:none;color:inherit;transition:border-color .2s,transform .15s,box-shadow .2s}
.plate--link:hover{border-color:var(--border-strong);transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.plate .coord{margin-bottom:12px;display:block}
.plate h3{margin-bottom:.35em}
.plate p{color:var(--muted);font-size:.95rem;margin-bottom:.9rem}
.plate__go{margin-top:auto;font-family:var(--font-mono);font-size:.78rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--orange-ink);display:inline-flex;align-items:center;gap:6px}
.plate--link:hover .plate__go{gap:10px}
.plate__icon{width:40px;height:40px;border-radius:10px;background:var(--orange-soft);color:var(--orange-ink);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.plate__icon svg{width:22px;height:22px}

/* stop-numbered "plate" for journey */
.plate--stop{border-left:3px solid var(--orange)}
.plate--stop .num{position:absolute;top:18px;right:20px;font-family:var(--font-display);font-size:2.4rem;font-weight:800;color:var(--border-strong);line-height:1}

/* ---------- route spine (journey) ---------- */
.spine{position:relative;margin:2rem 0;padding-left:0}
.spine__item{position:relative;display:grid;grid-template-columns:64px 1fr;gap:18px;padding-bottom:26px}
.spine__item:last-child{padding-bottom:0}
.spine__rail{position:relative;display:flex;flex-direction:column;align-items:center}
.spine__dot{width:48px;height:48px;border-radius:50%;background:var(--surface);border:2px solid var(--orange);color:var(--orange-ink);font-family:var(--font-mono);font-weight:500;display:flex;align-items:center;justify-content:center;flex:none;box-shadow:var(--shadow);z-index:1}
.spine__line{position:absolute;top:48px;bottom:-26px;width:2px;background:repeating-linear-gradient(var(--border-strong) 0 5px,transparent 5px 10px)}
.spine__item:last-child .spine__line{display:none}
.spine__body{padding-top:6px}
.spine__body h3{margin-bottom:.25em}
.spine__body p{color:var(--muted);font-size:.96rem;margin-bottom:.5rem}
@media (max-width:560px){.spine__item{grid-template-columns:44px 1fr;gap:12px}.spine__dot{width:40px;height:40px}.spine__line{top:40px}}

/* ---------- tables ---------- */
.tablewrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow)}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:.93rem}
th,td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--border);vertical-align:top}
thead th{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);background:var(--surface-2);font-weight:500}
tbody tr:last-child td{border-bottom:0}
td b{color:var(--ink)}
.tag-best{display:inline-block;font-family:var(--font-mono);font-size:.66rem;letter-spacing:.06em;text-transform:uppercase;color:var(--pine);background:var(--pine-soft);border-radius:5px;padding:2px 7px}

/* ---------- callouts ---------- */
.note{border:1px solid var(--border);border-left:3px solid var(--pine);background:var(--surface);border-radius:10px;padding:15px 18px;margin:1.4rem 0;font-size:.94rem;color:var(--muted)}
.note strong{color:var(--ink)}
.note--warn{border-left-color:var(--orange)}
.note--verify{border-left-color:var(--verify)}
.note .coord{display:block;margin-bottom:6px}

/* checklist */
.check{list-style:none;padding:0;margin:1rem 0;display:grid;gap:10px}
.check li{display:grid;grid-template-columns:24px 1fr;gap:12px;align-items:start;font-size:.95rem}
.check li::before{content:"";width:22px;height:22px;border-radius:6px;background:var(--orange-soft);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23B8480D' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center;background-size:14px;margin-top:2px}

/* pill row */
.pills{display:flex;flex-wrap:wrap;gap:8px;margin:1rem 0}
.pill{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.02em;color:var(--ink);background:var(--surface);border:1px solid var(--border-strong);border-radius:20px;padding:7px 14px;text-decoration:none;display:inline-flex;gap:6px;align-items:center;min-height:36px}
.pill:hover{border-color:var(--orange);color:var(--orange-ink)}

/* stat row */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:1.4rem 0}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:18px}
.stat b{font-family:var(--font-display);font-size:1.9rem;color:var(--orange-ink);display:block;line-height:1}
.stat span{font-size:.86rem;color:var(--muted)}
@media (max-width:560px){.stats{grid-template-columns:1fr}}

/* ---------- CTA band ---------- */
.band{background:var(--ink);color:var(--bg);border-radius:20px;padding:clamp(2rem,4vw,3rem);text-align:center;position:relative;overflow:hidden}
.band h2{color:#fff}
.band p{color:rgba(245,238,230,.8);margin-left:auto;margin-right:auto}
.band__ctas{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:1.5rem}
.band .btn--ghost{color:#fff;border-color:rgba(255,255,255,.3)}
.band .btn--ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.band::after{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 15% 20%,rgba(235,101,25,.25),transparent 45%);pointer-events:none}

/* ---------- FAQ ---------- */
.faq details{border:1px solid var(--border);border-radius:12px;background:var(--surface);margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:17px 20px;font-family:var(--font-display);font-weight:700;font-size:1.02rem;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:14px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--font-mono);font-size:1.3rem;color:var(--orange-ink);flex:none}
.faq details[open] summary::after{content:"–"}
.faq details[open] summary{border-bottom:1px solid var(--border)}
.faq__body{padding:16px 20px;color:var(--muted);font-size:.96rem}
.faq__body p:last-child{margin-bottom:0}

/* ---------- breadcrumb ---------- */
.crumb{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.04em;color:var(--muted);padding:16px 0 0}
.crumb a{color:var(--muted);text-decoration:none}
.crumb a:hover{color:var(--orange-ink)}
.crumb span{color:var(--orange-ink)}

/* page header */
.phead{padding:clamp(2rem,5vw,3.4rem) 0 clamp(1.2rem,3vw,2rem)}
.phead h1{margin-bottom:.3em}
.phead .lead{font-size:clamp(1.05rem,1.7vw,1.28rem)}

/* prose */
.prose h2{margin-top:2.4rem}
.prose h3{margin-top:1.8rem}
.prose ul,.prose ol{color:var(--muted);padding-left:1.2rem;max-width:68ch}
.prose li{margin-bottom:.5rem}
.prose li::marker{color:var(--orange-ink)}

/* placeholder block (source-evidence rules) */
.ph{border:1px dashed var(--border-strong);border-radius:12px;padding:16px 18px;background:var(--surface-2);margin:1.2rem 0;font-size:.9rem;color:var(--muted)}
.ph .coord{color:var(--muted);display:block;margin-bottom:6px}

/* ---------- footer ---------- */
.foot{background:var(--surface);border-top:1px solid var(--border);margin-top:clamp(3rem,6vw,5rem)}
.foot__inner{max-width:var(--maxw);margin:0 auto;padding:clamp(2.4rem,5vw,3.4rem) 22px 2rem;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
.foot__brand .brand{margin-bottom:12px}
.foot__brand p{font-size:.88rem;color:var(--muted);max-width:34ch}
.foot h4{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:500;margin-bottom:14px}
.foot ul{list-style:none;padding:0;margin:0;display:grid;gap:9px}
.foot a{color:var(--text);text-decoration:none;font-size:.92rem}
.foot a:hover{color:var(--orange-ink)}
.foot__bot{border-top:1px solid var(--border);max-width:var(--maxw);margin:0 auto;padding:18px 22px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center}
.foot__bot small{color:var(--muted-2);font-size:.8rem}
.disc{font-size:.8rem;color:var(--muted-2);max-width:var(--maxw);margin:0 auto;padding:0 22px 26px;line-height:1.6}
@media (max-width:800px){.foot__inner{grid-template-columns:1fr 1fr}.foot__brand{grid-column:1/-1}}
@media (max-width:480px){.foot__inner{grid-template-columns:1fr}}

/* utilities */
.mt0{margin-top:0}.mb0{margin-bottom:0}
.hide{display:none}
.nowrap{white-space:nowrap}