/* ============================================================
   Gopal Billcon — construction and contracting, Surat.

   Colours come from the owner's logo: its navy ground (#2C3F5F), deepened
   for the page, and its gold as the one accent. Condensed uppercase
   headings and square corners keep it reading like a site office, not a
   software studio.
   ============================================================ */

:root{
  --bg:#121C30;
  --bg-alt:#16223A;
  --surface:#1D2B47;
  --line:rgba(255,255,255,.10);
  --line-str:rgba(255,255,255,.18);
  --text:#F3F5F9;
  --muted:#AFB9CA;
  --dim:#8592A9;
  --gold:#D6AC5A;
  --gold-dk:#BF9441;
  /* a cool steel tone so gold can stay an accent rather than the whole palette */
  --steel:#9DAEC4;
  --ease:cubic-bezier(.22,1,.36,1);
  --head:'Barlow Condensed',Impact,sans-serif;
  --body:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--body);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3{margin:0;font-family:var(--head);font-weight:700;letter-spacing:.005em;line-height:1.02;text-transform:uppercase}
p{margin:0}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-9999px;background:var(--gold);color:var(--bg);padding:10px 18px;z-index:200;font-weight:700}
.skip:focus{left:0;top:0}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;background:var(--gold);color:var(--bg);border:2px solid var(--gold);
  font-family:var(--head);font-size:17px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;
  cursor:pointer;transition:background .2s,color .2s,transform .2s var(--ease);
}
.btn:hover{background:var(--gold-dk);border-color:var(--gold-dk);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-str)}
.btn-ghost:hover{background:rgba(214,172,90,.1);border-color:var(--gold);color:var(--gold)}
.btn-sm{padding:9px 18px;font-size:15px}
.btn-wide{width:100%;margin-top:4px}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:100;background:rgba(18,28,48,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:22px;height:72px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.logo{display:block;height:40px;width:auto}
.logo-foot{height:48px}
.nav-links{display:flex;gap:26px;margin-left:auto}
.nav-links a{font-size:14px;font-weight:500;color:var(--muted);transition:color .2s}
.nav-links a:hover{color:var(--text)}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px;margin-left:auto}
.burger span{display:block;width:24px;height:2px;background:var(--text);border-radius:2px}
.burger span+span{margin-top:6px}
.mobile-menu{display:none;flex-direction:column;padding:8px 24px 20px;border-top:1px solid var(--line)}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:13px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:16px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:84px 0 92px}
.hero-grid-bg{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 80% 70% at 50% 0%,#000 30%,transparent 78%);
}
.hero-in{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:52px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;margin-bottom:18px;
  font-family:var(--head);font-size:15px;letter-spacing:.18em;text-transform:uppercase;color:var(--steel);
}
.sq{width:9px;height:9px;background:var(--gold);flex:none}
.hero h1{font-size:clamp(3rem,7.4vw,5.6rem);margin-bottom:22px}
.lede{font-size:clamp(1rem,1.7vw,1.16rem);color:var(--muted);max-width:560px;margin-bottom:32px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap}
.hero-tags li{
  padding:6px 14px;border:1px solid var(--line-str);font-family:var(--head);
  font-size:14px;letter-spacing:.11em;text-transform:uppercase;color:var(--muted);
}
.hero-art svg{display:block;width:100%;height:auto}

/* ---------- sections ---------- */
.section{padding:92px 0}
.section.alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:680px;margin-bottom:52px}
.sec-head h2{font-size:clamp(2.1rem,4.6vw,3.4rem);margin-bottom:18px}
.sec-sub{color:var(--muted);font-size:1.02rem;max-width:620px}

/* ---------- what we build ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(248px,1fr));gap:18px}
.card{
  position:relative;padding:30px 26px 28px;background:var(--surface);
  border:1px solid var(--line);border-top:2px solid var(--steel);
  transition:transform .3s var(--ease),border-color .3s,background .3s;
}
.card:hover{transform:translateY(-5px);background:#23334F;border-top-color:var(--gold)}
.card-n{font-family:var(--head);font-size:15px;letter-spacing:.14em;color:var(--steel)}
.card h3{font-size:24px;margin:10px 0 12px}
.card p{color:var(--muted);font-size:14.5px}

/* ---------- how we work ---------- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(238px,1fr));gap:20px}
.steps li{position:relative;padding-top:26px;border-top:1px solid var(--line-str)}
.steps li:first-child{border-top-color:var(--gold)}
.step-n{
  position:absolute;top:-16px;left:0;background:var(--bg-alt);padding-right:12px;
  font-family:var(--head);font-size:30px;color:var(--steel);line-height:1;
}
.steps h3{font-size:21px;margin:0 0 10px}
.steps p{color:var(--muted);font-size:14.5px}

/* ---------- standards ---------- */
.std-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(266px,1fr));gap:1px;background:var(--line)}
.std{background:var(--bg);padding:32px 28px}
.std h3{font-size:21px;margin-bottom:12px;color:var(--text)}
.std{border-top:2px solid transparent;transition:border-color .3s,background .3s}
.std:hover{border-top-color:var(--gold);background:var(--bg-alt)}
.std p{color:var(--muted);font-size:14.5px}

/* ---------- enquiry ---------- */
.enquiry{padding:92px 0 104px;background:var(--bg-alt);border-top:1px solid var(--line)}
.enq-card{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;
  background:var(--surface);border:1px solid var(--line-str);border-left:3px solid var(--steel);
  padding:52px 48px;
}
.enq-copy h2{font-size:clamp(1.9rem,3.6vw,2.8rem);margin-bottom:16px}
.enq-where{margin-top:26px;font-family:var(--head);font-size:17px;letter-spacing:.12em;text-transform:uppercase;color:var(--steel)}
.enq-where span{color:var(--gold);margin-right:7px}
.enq{display:flex;flex-direction:column;gap:15px}
.enq-row{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.fld{display:flex;flex-direction:column;gap:6px;min-width:0}
.fld label{font-size:12.5px;font-weight:600;color:var(--text)}
.fld input,.fld select,.fld textarea{
  width:100%;padding:12px 14px;font-family:var(--body);font-size:14.5px;color:var(--text);
  background:rgba(0,0,0,.24);border:1px solid var(--line-str);border-radius:0;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.fld textarea{resize:vertical;min-height:108px;line-height:1.6}
.fld input::placeholder,.fld textarea::placeholder{color:var(--dim)}
.fld select{appearance:none;cursor:pointer;padding-right:38px;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237E7668' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;background-size:16px}
.fld select option{background:var(--surface);color:var(--text)}
.fld input:focus,.fld select:focus,.fld textarea:focus{
  outline:none;border-color:var(--gold);background:rgba(214,172,90,.06);box-shadow:0 0 0 3px rgba(214,172,90,.16);
}
.fld.bad input,.fld.bad select,.fld.bad textarea{border-color:#E2685E;box-shadow:0 0 0 3px rgba(226,104,94,.14)}
.err{font-size:11.5px;color:#F2857B;display:none}
.fld.bad .err{display:block}
.fld .count{align-self:flex-end;font-size:11px;color:var(--dim);font-variant-numeric:tabular-nums}
.fld .count.low{color:#E0A33C}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.enq-note{font-size:11.5px;color:var(--dim);line-height:1.55}
.enq-status{font-size:13.5px;font-weight:600;display:none}
.enq-status.ok{display:block;color:#7FD1A6}
.enq-status.bad{display:block;color:#F2857B}
.enq.sending button[type=submit]{opacity:.6;pointer-events:none}

/* ---------- footer ---------- */
.foot{padding:52px 0 0;border-top:1px solid var(--line)}
.foot-in{display:grid;grid-template-columns:1.4fr 1fr auto;gap:36px;padding-bottom:36px}
.foot-in p{color:var(--dim);font-size:13.5px;margin-top:10px;max-width:380px}
.foot-links{display:flex;flex-direction:column;gap:11px}
.foot-links a{color:var(--muted);font-size:14px}
.foot-links a:hover{color:var(--text)}
.foot-where{font-family:var(--head);font-size:16px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.foot-bar{padding:20px 24px;border-top:1px solid var(--line);color:var(--dim);font-size:12.5px}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease);transition-delay:calc(var(--i,0)*70ms)}
.reveal.in{opacity:1;transform:none}

@media (max-width:960px){
  .hero-in{grid-template-columns:1fr;gap:38px}
  .hero-art{max-width:460px;margin-inline:auto;width:100%}
  .enq-card{grid-template-columns:1fr;gap:34px;padding:38px 26px}
  .foot-in{grid-template-columns:1fr;gap:24px}
}
/* The header collapses to the burger before the links stop fitting, not at a
   round number. With four links (Guides was the fourth) they no longer fit at
   760, which left a 430-760 band where the row overflowed by 28px. This
   breakpoint belongs to the nav alone - the rules below it are about spacing
   and are unrelated. */
@media (max-width:860px){
  .nav-links{display:none}
  .burger{display:block}
  .nav-in .btn-sm{display:none}
}
@media (max-width:760px){
  .hero{padding:56px 0 68px}
  .section,.enquiry{padding:64px 0}
  .enq-row{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none!important}
}

/* ================= Analytics consent ================= */
.consent{
  position:fixed;left:16px;right:16px;bottom:16px;z-index:300;
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  max-width:760px;margin:0 auto;padding:16px 20px;
  background:var(--surface);border:1px solid var(--line-str);border-left:3px solid var(--gold);
  box-shadow:0 22px 50px -18px rgba(0,0,0,.75);
  opacity:0;transform:translateY(14px);transition:opacity .3s var(--ease),transform .3s var(--ease);
}
.consent.in{opacity:1;transform:none}
.consent p{margin:0;flex:1 1 320px;font-size:13px;color:var(--muted);line-height:1.55}
.consent-btns{display:flex;gap:10px;flex:none;margin-left:auto}
@media (max-width:560px){
  .consent{left:10px;right:10px;bottom:10px;padding:14px 16px}
  .consent-btns{width:100%;margin-left:0}
  .consent-btns .btn{flex:1}
}
@media (prefers-reduced-motion:reduce){ .consent{transition:none;opacity:1;transform:none} }

/* ================= Work-type pages ================= */

/* nav: "what we build" dropdown + login link */
.drop{position:relative}
.drop-t{
  display:inline-flex;align-items:center;gap:6px;padding:0;border:0;background:none;cursor:pointer;
  font-family:var(--body);font-size:14px;font-weight:500;color:var(--muted);transition:color .2s;
}
.drop-t:hover,.drop.open .drop-t{color:var(--text)}
.drop-t .chev{transition:transform .2s var(--ease)}
.drop.open .drop-t .chev{transform:rotate(180deg)}
.drop-m{
  position:absolute;top:calc(100% + 16px);left:-18px;z-index:120;min-width:250px;
  display:flex;flex-direction:column;padding:8px 0;
  background:var(--surface);border:1px solid var(--line-str);border-top:2px solid var(--gold);
  box-shadow:0 26px 54px -20px rgba(0,0,0,.8);
}
.drop-m[hidden]{display:none}
.drop-m a{padding:10px 20px;font-size:14px;color:var(--muted);border-left:2px solid transparent}
.drop-m a:hover{color:var(--text);background:rgba(214,172,90,.07);border-left-color:var(--gold)}
.drop-m a[aria-current=page]{color:var(--gold);border-left-color:var(--gold)}
.nav-login{
  display:inline-flex;align-items:center;gap:7px;flex:none;
  font-family:var(--head);font-size:15px;letter-spacing:.07em;text-transform:uppercase;
  color:var(--steel);transition:color .2s;
}
.nav-login:hover{color:var(--gold)}
.nav-links{margin-left:auto}

/* page hero + breadcrumb */
.page-hero{padding:58px 0 66px}
.page-hero h1{font-size:clamp(2.5rem,5.6vw,4.4rem);margin-bottom:20px}
.page-hero .lede{margin-bottom:30px}
.crumb{display:flex;align-items:center;gap:10px;margin-bottom:22px;font-family:var(--head);font-size:14px;letter-spacing:.14em;text-transform:uppercase}
.crumb a{color:var(--steel)}
.crumb a:hover{color:var(--gold)}
.crumb span{color:var(--dim)}
.crumb b{color:var(--muted);font-weight:700}

/* scope grid */
.specs{display:grid;grid-template-columns:repeat(auto-fit,minmax(288px,1fr));gap:20px}
.spec{padding:26px 24px 24px;background:var(--surface);border:1px solid var(--line);border-left:2px solid var(--steel);transition:border-left-color .3s,background .3s,transform .3s var(--ease)}
.spec:hover{border-left-color:var(--gold);background:#23334F;transform:translateY(-3px)}
.spec-n{font-family:var(--head);font-size:14px;letter-spacing:.16em;color:var(--steel)}
.spec h3{font-size:21px;margin:8px 0 10px}
.spec p{color:var(--muted);font-size:14.5px}

/* cross links to the other work types */
.xlinks{display:grid;grid-template-columns:repeat(auto-fit,minmax(252px,1fr));gap:1px;background:var(--line)}
.xlink{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:26px 24px;background:var(--bg-alt);border-top:2px solid transparent;transition:border-color .3s,background .3s}
.xlink:hover{border-top-color:var(--gold);background:var(--surface)}
.xlink-n{font-family:var(--head);font-size:14px;letter-spacing:.16em;text-transform:uppercase;color:var(--steel);width:100%}
.xlink-t{font-family:var(--head);font-size:22px;text-transform:uppercase;line-height:1.05}
.xlink-go{margin-left:auto;color:var(--gold);font-size:20px;transition:transform .3s var(--ease)}
.xlink:hover .xlink-go{transform:translateX(5px)}

/* homepage cards are links now */
.card{display:block;color:inherit}
.card-go{
  display:inline-flex;align-items:center;gap:7px;margin-top:16px;
  font-family:var(--head);font-size:14px;letter-spacing:.13em;text-transform:uppercase;color:var(--gold);
}
.card-go span{transition:transform .3s var(--ease);display:inline-block}
.card:hover .card-go span{transform:translateX(4px)}

@media (max-width:760px){
  .nav-login{display:none}
  .page-hero{padding:40px 0 52px}
}

/* ================= FAQ =================
   <details> rather than JS, so the answers are in the HTML whether or not the
   script runs - which is also what makes them eligible as a rich result. */
.faq-list{
  max-width:860px;margin-top:30px;
  border-top:1px solid var(--line);
}
.faq{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 46px 20px 0;
  font-family:var(--head);font-size:clamp(18px,2.4vw,21px);
  font-weight:600;letter-spacing:.005em;color:var(--text);
  transition:color .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover,.faq summary:focus-visible{color:var(--gold)}
.faq summary::after{
  content:"";position:absolute;right:8px;top:50%;
  width:11px;height:11px;margin-top:-7px;
  border-right:2px solid var(--gold);border-bottom:2px solid var(--gold);
  transform:rotate(45deg);transform-origin:center;
  transition:transform .25s var(--ease);
}
.faq[open] summary::after{transform:rotate(-135deg);margin-top:-3px}
.faq-a{padding:0 40px 22px 0}
.faq-a p{margin:0;color:var(--muted);line-height:1.8;max-width:70ch}

@media (max-width:560px){
  .faq summary{padding-right:38px;font-size:17px}
  .faq-a{padding-right:0}
}
@media (prefers-reduced-motion:reduce){
  .faq summary,.faq summary::after{transition:none}
}

/* ================= Comparison, stages, handover ================= */
.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;
}

/* The wrapper scrolls, never the page. A grid or flex item's automatic minimum
   size is min-content, so a wide table inside one widens the whole layout
   sideways; overflow on the table itself does not help, only min-width:0 on
   the item holding it. */
.cmp-wrap{
  min-width:0;overflow-x:auto;margin-top:30px;
  border:1px solid var(--line);border-radius:10px;background:var(--surface);
  -webkit-overflow-scrolling:touch;
}
.cmp{width:100%;border-collapse:collapse;font-size:14.5px;min-width:620px}
/* Four columns (aspect + three options) need more room before wrapping
   turns every cell into a column of single words. */
.cmp-3{min-width:820px}
.cmp-3 tbody th{width:16%}
.cmp th,.cmp td{
  padding:14px 18px;text-align:left;vertical-align:top;
  border-bottom:1px solid var(--line);
}
.cmp thead th{
  background:var(--bg-alt);color:var(--text);
  font-family:var(--head);font-size:13px;font-weight:600;
  letter-spacing:.08em;text-transform:uppercase;
  position:sticky;top:0;z-index:1;
}
.cmp tbody th{color:var(--text);font-weight:600;width:20%}
.cmp td{color:var(--muted);line-height:1.6}
.cmp td:last-child{color:var(--text)}
.cmp tbody tr:last-child th,.cmp tbody tr:last-child td{border-bottom:0}
.cmp tbody tr:hover th,.cmp tbody tr:hover td{background:rgba(255,255,255,.02)}

.stages{display:grid;gap:14px;margin-top:30px;counter-reset:stg}
.stage{
  min-width:0;position:relative;padding:22px 24px 22px 66px;
  border:1px solid var(--line);border-radius:10px;background:var(--surface);
}
.stage::before{
  counter-increment:stg;content:counter(stg,decimal-leading-zero);
  position:absolute;left:22px;top:22px;
  font-family:var(--head);font-size:17px;font-weight:700;color:var(--gold);
}
.stage h3{font-size:17px;margin-bottom:8px;font-family:var(--head);letter-spacing:.01em}
.stage p{color:var(--muted);font-size:14.5px;line-height:1.75;margin:0}

.handover{display:grid;gap:12px;margin-top:26px;max-width:80ch}
.handover li{position:relative;padding-left:30px;color:var(--muted);line-height:1.75}
.handover li::before{
  content:"";position:absolute;left:6px;top:10px;
  width:8px;height:8px;background:var(--gold);
  transform:rotate(45deg);
}

@media (max-width:560px){
  .cmp th,.cmp td{padding:12px 14px}
  .stage{padding:18px}
  .stage::before{position:static;display:block;margin-bottom:8px}
}

/* ================= Language switcher ================= */
.lang-wrap{position:relative;flex:none}
.lang-btn{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 12px;border:1px solid var(--line-str);border-radius:6px;
  background:transparent;color:var(--muted);cursor:pointer;
  font-family:var(--body);font-size:13px;font-weight:500;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.lang-btn:hover,.lang-btn:focus-visible{color:var(--text);border-color:var(--gold)}
.lang-menu{
  position:absolute;top:calc(100% + 8px);right:0;z-index:60;
  min-width:190px;padding:6px;
  background:var(--surface);border:1px solid var(--line-str);border-radius:8px;
  box-shadow:0 18px 40px -14px rgba(0,0,0,.7);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s;
}
.lang-wrap.open .lang-menu{opacity:1;visibility:visible;transform:none}
.lang-menu a{
  display:flex;align-items:baseline;gap:9px;
  padding:9px 11px;border-radius:5px;color:var(--muted);
  font-size:14px;transition:background .15s var(--ease),color .15s var(--ease);
}
.lang-menu a:hover,.lang-menu a:focus-visible{background:var(--bg-alt);color:var(--text)}
.lang-menu a[aria-current="true"]{color:var(--gold)}
.lang-menu a b{font-weight:600}
.lang-menu a span{font-size:12px;color:var(--dim)}

@media (max-width:760px){
  /* the header collapses to burger + CTA; the switcher stays, since a visitor
     who needs another language needs it before anything else on the page */
  .lang-btn span{display:none}
  .lang-btn{padding:8px 10px}
  .lang-menu{right:-4px}
}
@media (prefers-reduced-motion:reduce){ .lang-menu{transition:none} }

/* ---------- guides / articles ----------
   The TOC sits beside the prose on desktop and above it on mobile, so the
   grid is declared once and collapsed under the breakpoint rather than
   positioned twice. `min-width:0` on the article is what stops a long
   unbroken string (a URL, a code) forcing the whole grid wider than the
   viewport - a grid item's default min-width is auto, not zero. */
.art-meta{
  margin-top:20px;font-family:var(--head);font-size:15px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--steel);display:flex;gap:12px;align-items:center;flex-wrap:wrap;
}
.art-meta span{color:var(--dim)}
.art-wrap{display:grid;grid-template-columns:260px minmax(0,1fr);gap:56px;align-items:start}
.art-toc{position:sticky;top:96px;border-left:2px solid var(--gold);padding-left:20px}
.art-toc .eyebrow{margin-bottom:14px}
.art-toc ol{display:flex;flex-direction:column;gap:9px;counter-reset:none}
.art-toc a{display:flex;gap:10px;color:var(--muted);font-size:14.5px;line-height:1.45;transition:color .2s}
.art-toc a:hover{color:var(--gold)}
.art-toc a span{font-family:var(--head);color:var(--dim);font-size:13px;letter-spacing:.1em;padding-top:2px}
.art-body{min-width:0;max-width:74ch}
.art-body h2{
  font-size:30px;margin:52px 0 16px;padding-top:6px;color:var(--text);
  border-top:2px solid var(--line-str);scroll-margin-top:96px;
}
.art-body h2:first-child{margin-top:0}
.art-body p{color:var(--muted);font-size:16.5px;margin-bottom:18px}
.art-body .art-note{
  border-left:2px solid var(--gold);background:var(--bg-alt);
  padding:18px 22px;color:var(--text);font-size:16px;margin:26px 0;
}
.art-ul,.art-ol{display:flex;flex-direction:column;gap:12px;margin:0 0 22px}
.art-ul li{position:relative;padding-left:22px;color:var(--muted);font-size:16.5px}
.art-ul li::before{content:"";position:absolute;left:0;top:11px;width:9px;height:2px;background:var(--gold)}
.art-ol{counter-reset:ai}
.art-ol li{position:relative;padding-left:40px;color:var(--muted);font-size:16.5px}
.art-ol li::before{
  counter-increment:ai;content:counter(ai,decimal-leading-zero);position:absolute;left:0;top:1px;
  font-family:var(--head);font-size:15px;letter-spacing:.1em;color:var(--steel);
}
.art-ol li b{color:var(--text);font-weight:600}
@media(max-width:900px){
  .art-wrap{grid-template-columns:1fr;gap:36px}
  .art-toc{position:static;top:auto}
  .art-body h2{font-size:26px;margin-top:42px}
}