*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#F7F5F1; --surface:#FFFFFF; --surface-2:#F1EFE9;
  --ink:#1B1E21; --ink-2:#5D6167; --ink-3:#8B8F95;
  --line:#E6E3DC; --acc:#0E7A4F; --acc-strong:#0B6340; --acc-soft:#E7F2EB; --acc-line:#C6E0D2;
  --r:14px; --r-sm:10px;
  --sh-1:0 1px 2px rgba(27,30,33,.05);
  --sh-2:0 10px 30px -10px rgba(27,30,33,.14);
  --font:'Golos Text',system-ui,sans-serif;
  --mono:'JetBrains Mono',monospace;
}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--ink);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--acc);text-decoration:none}
h1,h2,h3{font-weight:600;letter-spacing:-.02em;line-height:1.2}
.container{max-width:1240px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-3)}
.muted{color:var(--ink-3);font-size:13px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:600 14px/1 var(--font);border-radius:var(--r-sm);border:1px solid transparent;cursor:pointer;padding:0 18px;height:42px;transition:.15s;white-space:nowrap;color:var(--ink);background:transparent;text-decoration:none}
.btn-primary{background:var(--acc);color:#fff}
.btn-primary:hover{background:var(--acc-strong)}
.btn-dark{background:var(--ink);color:#fff}
.btn-outline{background:var(--surface);border-color:var(--line);box-shadow:var(--sh-1)}
.btn-lg{height:50px;padding:0 24px;font-size:15px;border-radius:12px}
.tag{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:10.5px;font-weight:500;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-3);background:var(--surface-2);border:1px solid var(--line);border-radius:6px;padding:3px 8px}
.tag-acc{color:var(--acc-strong);background:var(--acc-soft);border-color:var(--acc-line)}
.hdr{position:sticky;top:0;z-index:50;background:rgba(247,245,241,.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.hdr-in{display:flex;align-items:center;gap:8px;height:64px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink)}
.logo b{font-size:17px;font-weight:700;letter-spacing:-.02em}
.logo b span{color:var(--acc)}
.hdr-nav{display:flex;gap:2px;margin-left:12px}
.nav-link{font:500 14px var(--font);color:var(--ink-2);padding:8px 13px;border-radius:9px}
.nav-link:hover,.nav-link.on{color:var(--ink);background:var(--surface);border:1px solid var(--line);box-shadow:var(--sh-1)}
.hdr-sp{flex:1}
.hdr-search{display:flex;align-items:center;height:38px;padding:0 14px;border:1px solid var(--line);background:var(--surface);border-radius:10px;color:var(--ink-3);font:400 13.5px var(--font);min-width:180px}
.hdr .btn{margin-left:8px}
.hero{padding:64px 0 56px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(34px,4.4vw,54px);letter-spacing:-.035em;margin:16px 0}
.hero h1 em{font-style:normal;color:var(--acc)}
.hero-sub{font-size:17px;color:var(--ink-2);max-width:460px;margin-bottom:28px}
.big-search{display:flex;gap:8px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:8px;box-shadow:var(--sh-2);max-width:600px}
.big-search input{flex:1;border:none;outline:none;font:400 15px var(--font);padding:0 10px;background:transparent;min-width:0}
.hero-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;align-items:center}
.chip{font-size:13px;font-weight:500;color:var(--ink-2);background:var(--surface);border:1px solid var(--line);border-radius:99px;padding:6px 13px}
.chip:hover{border-color:var(--acc);color:var(--acc-strong);background:var(--acc-soft)}
.hero-trust{display:flex;gap:18px;margin-top:28px;flex-wrap:wrap;font-size:13px;color:var(--ink-2)}
.hero-mock{position:relative;height:440px;perspective:1100px}
.hero-mock::before{content:'';position:absolute;width:280px;height:280px;right:18%;top:12%;border-radius:50%;background:radial-gradient(circle,rgba(14,122,79,.18),transparent 68%);filter:blur(8px);pointer-events:none;animation:heroGlow 5.5s ease-in-out infinite}
.mock-in{position:absolute;inset:0;transition:transform .35s ease;transform-style:preserve-3d;animation:heroFloat 6s ease-in-out infinite}
.paper{position:absolute;width:280px;background:var(--surface);border:1px solid var(--line);border-radius:6px;box-shadow:0 24px 60px -20px rgba(27,30,33,.25);padding:26px 24px}
.paper.back{right:40px;top:36px;transform:rotate(6deg);background:linear-gradient(180deg,#fff 0%,#FBFBF8 100%)}
.paper.front{right:130px;top:78px;transform:rotate(-4deg);width:300px;padding:28px 26px;z-index:2}
.pl{height:7px;border-radius:4px;background:#EFEDE7;margin-bottom:9px}
.pl.w40{width:40%}.pl.w60{width:60%}.pl.w80{width:80%}.pl.w100{width:100%}
.pf{font-family:var(--mono);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);text-align:center;margin:10px 0 14px}
.pf b{display:block;font-size:12px;color:var(--ink);letter-spacing:.12em;margin-bottom:3px}
.pfield{display:block;background:var(--acc-soft);border-radius:3px;padding:2px 5px;margin-bottom:8px;font-size:9.5px;color:var(--acc-strong);width:fit-content;font-weight:500}
.mock-b{position:absolute;z-index:3;display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:var(--sh-2);padding:9px 14px;font-size:12.5px;font-weight:600;animation:badgePop .7s ease both}
.mock-b svg{width:15px;height:15px;flex:none}
.mock-b.b1{left:4%;top:8px;color:var(--acc-strong);animation-delay:.15s}
.mock-b.b1 svg{color:var(--acc)}
.mock-b.b2{right:0;bottom:44px;animation-delay:.35s}
.mock-b.b2 svg{color:var(--ink-2)}
@keyframes heroFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes heroGlow{0%,100%{opacity:.85;transform:scale(1)}50%{opacity:1;transform:scale(1.06)}}
@keyframes badgePop{from{opacity:0;transform:translateY(8px) scale(.96)}to{opacity:1;transform:none}}
.hsec{padding:48px 0;border-top:1px solid var(--line)}
.hsec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.hsec-head h2{font-size:26px}
.hsec-head p{color:var(--ink-2);font-size:14.5px;margin-top:6px}
.link-arrow{font-weight:600;font-size:14px;color:var(--acc)}
.cat-flow{display:flex;flex-wrap:wrap;gap:10px}
.cat-flow.compact{margin:16px 0 20px}
.cat-chip{display:inline-flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 16px;font-size:14px;font-weight:600;color:var(--ink)}
.cat-chip em{font-style:normal;font-family:var(--mono);font-size:11px;color:var(--ink-3);font-weight:500}
.cat-chip:hover,.cat-chip.on{border-color:var(--acc);background:var(--acc-soft)}
.doc-grid,.art-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.dcard,.art-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px 24px;display:flex;flex-direction:column;gap:10px;transition:.18s;color:inherit}
.dcard:hover,.art-card:hover{border-color:#C4C1B9;box-shadow:var(--sh-2);transform:translateY(-2px)}
.dcard h3,.art-card h3{font-size:17px}
.dcard p,.art-card p{font-size:13.5px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.dcard-top{display:flex;gap:8px;flex-wrap:wrap}
.dcard-bot{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:6px}
.go{font-weight:600;font-size:13px;color:var(--acc)}
.art-meta{font-size:12px;color:var(--ink-3);margin-top:auto}
.schedule-pill{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:500;color:var(--acc-strong);background:var(--acc-soft);border:1px solid var(--acc-line);border-radius:99px;padding:6px 12px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.step-n{font-family:var(--mono);font-size:12px;color:var(--acc);margin-bottom:10px}
.step h3{margin-bottom:8px}
.step p{color:var(--ink-2);font-size:14px}
.page-pad{padding:28px 0 80px}
.page-head{margin:8px 0 22px}
.page-head h1{font-size:clamp(26px,3vw,36px);margin-bottom:8px}
.page-head p{color:var(--ink-2)}
.crumbs{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--ink-3);margin-bottom:18px}
.crumbs a{color:var(--ink-2)}
.crumbs .cur{color:var(--ink);font-weight:600}
.crumbs .sep{opacity:.5}
.cat-bar{display:flex;gap:8px;margin-bottom:8px;max-width:640px}
.cat-bar input{flex:1;height:44px;border:1px solid var(--line);border-radius:12px;padding:0 14px;font:400 15px var(--font);background:var(--surface)}
.cat-count{margin:8px 0 18px;color:var(--ink-2)}
.pager{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}
.pg{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-weight:600}
.pg.on,.pg:hover{border-color:var(--acc);background:var(--acc-soft);color:var(--acc-strong)}
.doc-hero{margin-bottom:28px}
.doc-hero h1{font-size:clamp(28px,3.4vw,40px);margin:10px 0 14px;letter-spacing:-.03em}
.doc-meta{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:4px}
.doc-lead{font-size:18px;line-height:1.55;color:var(--ink-2);max-width:680px;margin:0}
.cta-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:10px}
.free-note{font-size:13px;color:var(--acc-strong);font-weight:600}
.doc-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:start}
.doc-content{display:flex;flex-direction:column;gap:22px;margin-top:8px}
.doc-sec{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px 24px 24px;box-shadow:var(--sh-1)}
.sec-head{display:flex;gap:14px;align-items:flex-start;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.sec-num{font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--acc-strong);background:var(--acc-soft);border:1px solid var(--acc-line);border-radius:8px;padding:6px 8px;line-height:1}
.sec-head h2{font-size:20px;margin:0 0 4px;letter-spacing:-.02em}
.sec-sub{margin:0;font-size:13px;color:var(--ink-3)}
.about-body{display:flex;flex-direction:column;gap:12px}
.about-body p{margin:0;color:var(--ink-2);font-size:15.5px;line-height:1.65}
.about-lead{font-size:17px!important;line-height:1.6!important;color:var(--ink)!important;font-weight:500}
.field-grid{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:8px}
.field-item{display:flex;gap:10px;align-items:flex-start;background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:12px 14px;font-size:14px;line-height:1.45;color:var(--ink)}
.field-i{font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.04em;color:var(--acc-strong);flex:0 0 auto;margin-top:1px}
.steps-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:0;counter-reset:none}
.step-item{display:grid;grid-template-columns:36px 1fr;gap:14px;align-items:start;padding:14px 0;border-bottom:1px solid var(--line);position:relative}
.step-item:last-child{border-bottom:none;padding-bottom:0}
.step-item:first-child{padding-top:0}
.step-n{width:36px;height:36px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:var(--ink);color:#fff;font:600 14px/1 var(--font);flex:0 0 auto}
.step-t{padding-top:7px;font-size:15px;line-height:1.55;color:var(--ink-2)}
.faq-list{display:flex;flex-direction:column;gap:8px;margin:0}
.faq-item{background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:0;overflow:hidden}
.faq-item summary{cursor:pointer;font-weight:600;color:var(--ink);list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;font-size:14.5px;line-height:1.4}
.faq-item summary::-webkit-details-marker{display:none}
.faq-plus{width:22px;height:22px;border-radius:50%;border:1px solid var(--line);background:var(--surface);flex:0 0 auto;position:relative}
.faq-plus::before,.faq-plus::after{content:'';position:absolute;background:var(--ink-2);left:50%;top:50%;transform:translate(-50%,-50%)}
.faq-plus::before{width:10px;height:1.5px}
.faq-plus::after{width:1.5px;height:10px}
.faq-item[open] .faq-plus::after{display:none}
.faq-item[open] summary{border-bottom:1px solid var(--line);background:var(--surface)}
.faq-item p{margin:0;padding:12px 16px 16px;color:var(--ink-2);font-size:14.5px;line-height:1.55}
.prose h2{font-size:22px;margin:36px 0 14px;letter-spacing:-.02em;scroll-margin-top:88px;padding-top:8px;border-top:1px solid transparent}
.prose h2:first-child{margin-top:0;padding-top:0}
.prose h3{font-size:17.5px;margin:24px 0 10px;scroll-margin-top:88px}
.prose p,.prose ul,.prose ol{color:var(--ink-2);margin-bottom:14px;font-size:15.5px;line-height:1.7}
.prose h2 + p{font-size:16px;color:var(--ink);font-weight:450}
.prose ul{list-style:none;padding-left:0;margin:4px 0 18px}
.prose ul > li{position:relative;padding-left:22px;margin-bottom:9px}
.prose ul > li::before{content:"";position:absolute;left:2px;top:9px;width:7px;height:7px;border-radius:2px;background:var(--acc)}
.prose ol{padding-left:22px}
.prose ol > li{margin-bottom:8px}
.prose strong{color:var(--ink);font-weight:600}
.prose a{font-weight:500;text-underline-offset:2px}
.prose a:hover{text-decoration:underline}
.prose a.doc-link{color:var(--acc);font-weight:600;border-bottom:1px solid var(--acc-line);text-decoration:none}
.prose a.doc-link:hover{border-color:var(--acc)}
.file-list{list-style:none;padding:0}
.file-list li{padding:10px 0;border-bottom:1px solid var(--line);display:flex;gap:12px;flex-wrap:wrap;align-items:baseline}
.aside .action-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;margin-bottom:14px;box-shadow:var(--sh-1)}
.aside .action-card b{display:block;margin-bottom:6px}
.aside .action-card p{color:var(--ink-2);font-size:13.5px;margin-bottom:14px}
.aside .action-card .btn{width:100%;margin-bottom:8px}
.aside-sticky{position:sticky;top:88px}
.preview-sec{margin-bottom:36px}
.preview-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.preview-head h2{font-size:22px;margin:0}
.preview-open{font:600 14px var(--font);color:var(--acc-strong)}
.preview-open:hover{text-decoration:underline}
.pdf-viewer{background:#525659;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh-1);overflow:hidden;min-height:480px}
.pdf-viewer-native{display:block}
.pdf-frame{display:block;width:100%;height:min(82vh,980px);border:0;background:#525659}
@media(max-width:900px){
  .pdf-frame{height:min(70vh,720px)}
}
.toc{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px}
.toc .t{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3);margin-bottom:10px}
.toc a{display:block;padding:8px 0;color:var(--ink-2);font-size:14px;border-bottom:1px solid var(--line)}
.toc a:last-child{border:none}
.art-page{padding-bottom:64px}
.art-band{background:linear-gradient(180deg,#F1EFE9 0%,var(--bg) 100%);border-bottom:1px solid var(--line);padding:8px 0 28px;margin-bottom:8px}
.art-pad{padding-top:28px}
.art-head{max-width:760px;margin:8px 0 0}
.art-meta-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.art-head h1{font-size:clamp(28px,3.4vw,42px);margin:0 0 14px;letter-spacing:-.03em}
.art-lede{font-size:18.5px;line-height:1.55;color:var(--ink-2);max-width:640px;margin:0;font-weight:500}
.art-chips{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:20px}
.art-chip{display:inline-flex;align-items:center;gap:8px;max-width:100%;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:8px 12px;font-size:13px;font-weight:600;color:var(--ink);box-shadow:var(--sh-1);transition:.15s}
.art-chip .mono{color:var(--acc-strong);font-size:10px}
.art-chip:hover{border-color:var(--acc);background:var(--acc-soft);transform:translateY(-1px)}
.art-lay{display:block}
.art-lay--toc{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start}
.art-toc{position:sticky;top:88px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 14px 14px;box-shadow:var(--sh-1);max-height:calc(100vh - 110px);overflow:auto}
.art-toc-t{font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);margin:0 4px 10px}
.art-toc ol{list-style:none;padding:0;margin:0}
.art-toc a{display:grid;grid-template-columns:22px 1fr;gap:8px;align-items:start;padding:8px 8px;border-radius:9px;font-size:13px;line-height:1.35;color:var(--ink-2);border:none}
.art-toc a .n{font-family:var(--mono);font-size:10.5px;color:var(--ink-3);padding-top:1px}
.art-toc a:hover{background:var(--surface-2);color:var(--ink)}
.art-toc a.on{background:var(--acc-soft);color:var(--acc-strong)}
.art-toc a.on .n{color:var(--acc-strong)}
.art-toc .lvl3 a{grid-template-columns:22px 1fr;padding-left:16px;font-size:12.5px}
.art-main{max-width:760px;min-width:0}
.art-body{margin-top:4px}
.art-sec-head{margin:0 0 16px}
.art-sec-head h2{font-size:22px;margin:0 0 6px}
.art-sec-head .muted{margin:0}
.art-callout{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--ink-3);border-radius:0 12px 12px 0;padding:14px 16px;margin:22px 0}
.art-callout p{margin:0;color:var(--ink-2);font-size:14.5px;line-height:1.55}
.art-callout-tip{border-left-color:var(--acc);background:var(--acc-soft)}
.art-callout-tip p{color:var(--acc-strong)}
.art-callout-warn{border-left-color:#96590F;background:#FBF1DE}
.art-callout-warn p{color:#6B3F0A}
.table-wrap{overflow-x:auto;margin:20px 0 24px;border:1px solid var(--line);border-radius:12px;background:var(--surface);box-shadow:var(--sh-1)}
.table-wrap table{width:100%;border-collapse:collapse;font-size:14px}
.table-wrap th,.table-wrap td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.table-wrap th{font-family:var(--mono);font-size:11px;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-3);background:var(--surface-2);font-weight:600}
.table-wrap tr:last-child td{border-bottom:none}
.table-wrap tr:hover td{background:#FBFAF7}
.checklist{list-style:none!important;padding:0!important;margin:16px 0 22px;display:flex;flex-direction:column;gap:8px}
.checklist > li::before{display:none!important}
.check-item{display:flex;gap:12px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px;font-size:14.5px;line-height:1.45;color:var(--ink);cursor:pointer;transition:.12s;user-select:none}
.check-item:hover{border-color:var(--acc-line);background:#FBFAF7}
.check-item.is-on{border-color:var(--acc-line);background:var(--acc-soft)}
.check-item.is-on > span:last-child{color:var(--ink-2);text-decoration:line-through;text-decoration-color:rgba(14,122,79,.35)}
.check-box{width:18px;height:18px;border-radius:5px;border:1.5px solid var(--acc-line);background:var(--acc-soft);flex:0 0 auto;margin-top:1px;position:relative}
.check-box.on,.check-item.is-on .check-box{background:var(--acc);border-color:var(--acc)}
.check-box.on::after,.check-item.is-on .check-box::after{content:'';position:absolute;left:5px;top:2px;width:5px;height:9px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}
.art-hr{border:none;border-top:1px solid var(--line);margin:28px 0}
.art-code{background:var(--surface-2);border:1px solid var(--line);border-radius:10px;padding:14px 16px;overflow:auto;font:13px/1.5 var(--mono);margin:16px 0;color:var(--ink)}
.art-faq{margin-top:48px;padding-top:8px}
.art-related{margin-top:48px;padding-top:28px;border-top:1px solid var(--line)}
.ftr{border-top:1px solid var(--line);padding:48px 0 28px;background:var(--surface-2)}
.ftr-in{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;margin-bottom:28px}
.ftr p{color:var(--ink-2);font-size:14px;margin-top:12px;max-width:360px}
.ftr-col h4{font-size:13px;margin-bottom:12px}
.ftr-col a,.ftr-col span{display:block;color:var(--ink-2);font-size:14px;padding:5px 0}
.ftr-bot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-3);border-top:1px solid var(--line);padding-top:18px}
.empty{padding:40px;text-align:center;color:var(--ink-2)}
@media(max-width:900px){
  .hero-grid,.doc-layout,.steps,.ftr-in,.doc-grid,.art-grid{grid-template-columns:1fr}
  .hdr-nav,.hdr-search{display:none}
  .hero-mock{height:340px;max-width:520px;margin:0 auto}
  .art-lay--toc{grid-template-columns:1fr}
  .art-toc{position:static;max-height:none;margin-bottom:8px}
  .field-grid{grid-template-columns:1fr}
  .doc-sec{padding:18px 16px 20px}
}
@media(max-width:640px){
  .hero{padding:40px 0 44px}
  .hero-mock{display:none}
}