:root{--soot:#201E1C;--paper:#E4E3DE;--paper2:#D8D7D2;--paper3:#CFCEC8;--ink:#3C3C3E;--ink2:#2A2A2C;--soft:#6A6A6C;--line:#B9B8B3;--red:#B4452C;--w:1200px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;position:relative;background:var(--paper);color:var(--ink);font-family:"PT Serif",Georgia,"Times New Roman",serif;font-size:18px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit}
.grain{position:fixed;inset:0;pointer-events:none;opacity:.22;mix-blend-mode:multiply;z-index:50}
.wrap{max-width:var(--w);margin:0 auto;padding:0 40px}
.sans{font-family:"PT Sans",Arial,sans-serif}
/* шапка */
header{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(6px);border-bottom:1px solid transparent;transition:border-color .3s}
header.on{border-color:var(--line)}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:78px}
.brand{display:flex;align-items:center;gap:14px;text-decoration:none}
.brand svg{width:38px;height:38px;display:block;fill:var(--ink)}
.brand .t{font:400 11px/1.25 "PT Sans",Arial,sans-serif;letter-spacing:.22em;text-transform:uppercase}
.brand .t b{display:block;font:400 17px/1.2 "PT Serif";letter-spacing:0;text-transform:none}
nav{display:flex;gap:30px;align-items:center;font:400 16px "PT Sans",Arial,sans-serif}
nav a{text-decoration:none;opacity:.9}
nav a:hover{opacity:1;text-decoration:underline;text-underline-offset:5px}
.btn{display:inline-block;border:1.5px solid var(--ink);color:var(--ink);padding:12px 26px;font:400 16px "PT Sans",Arial,sans-serif;text-decoration:none;border-radius:2px;background:transparent;cursor:pointer;transition:background .2s,color .2s}
.btn:hover{background:var(--ink);color:var(--paper)}
.btn.fill{background:var(--ink);color:var(--paper)}
.btn.fill:hover{background:var(--ink2)}
.btn.red{border-color:var(--red);color:var(--red)}
.btn.red:hover{background:var(--red);color:var(--paper)}
:focus-visible{outline:2px solid var(--red);outline-offset:3px}
/* первый экран */
.hero{position:relative;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1fr 1.1fr;gap:50px;align-items:center;padding:56px 40px 80px;min-height:calc(100vh - 78px)}
.hero .desc{font:400 14px "PT Sans",Arial,sans-serif;letter-spacing:.34em;text-transform:uppercase;margin-bottom:18px}
.hero .wm svg{display:block;width:100%;max-width:560px;height:auto}
.hero h1{font:400 30px/1.35 "PT Serif";margin:36px 0 16px;max-width:520px}
.hero p{max-width:470px;color:var(--soft);margin:0 0 34px}
.hero .cta{display:flex;gap:26px;align-items:center;flex-wrap:wrap}
.hero .cta a.link{font:400 16px "PT Sans",Arial,sans-serif;text-decoration:underline;text-underline-offset:5px}
/* свет из окна храма: пятно с тенью переплёта медленно идёт по стене, как солнце */
.okno{position:absolute;left:-6%;top:-14%;width:30%;max-width:460px;aspect-ratio:10/19;pointer-events:none;z-index:0;opacity:1;filter:blur(9px);
  transform:rotate(-17deg) skewX(-9deg);transform-origin:50% 0;animation:sun 40s ease-in-out infinite alternate}
.okno svg{width:100%;height:100%;display:block}
@keyframes sun{from{transform:translate(0,0) rotate(-17deg) skewX(-9deg)}to{transform:translate(64%,9%) rotate(-10deg) skewX(-4deg)}}
/* тень свода на стене: от того же окна, уходит влево, когда свет идёт вправо */
.shade{fill:var(--soot);fill-opacity:.24;transform:translate(24px,15px);animation:shade 40s ease-in-out infinite alternate}
@keyframes shade{from{transform:translate(24px,15px)}to{transform:translate(8px,18px)}}
/* слой птицы поверх всего: полёт не режется шапкой и краем экрана */
.bird-layer{position:absolute;left:0;top:0;width:100%;height:100%;overflow:visible;pointer-events:none;z-index:45}
.bird-layer .bird{pointer-events:auto}
.hero .wrap>*{position:relative;z-index:1}
/* свод из камней */
.draw{position:relative}
.draw svg{width:100%;height:auto;display:block;overflow:visible}
.stone{fill:var(--paper2);stroke:var(--ink);stroke-width:2;cursor:pointer;transition:fill .2s}
.stone:hover,.stone.on{fill:var(--paper3)}
.stone.key{fill:var(--ink);cursor:default}
.lbl{font-family:"PT Serif";font-size:17px;fill:var(--ink);transition:fill .2s,font-weight .2s}
.lbl.on{fill:var(--red)}
.leader{stroke:var(--ink);stroke-width:1}
.hand{font-family:"PT Serif";font-style:italic;font-size:17px;fill:var(--red)}
.dim{font-family:"PT Sans",Arial,sans-serif;font-size:13px;fill:var(--red)}
/* сборка */
.anim .stone,.anim .pier,.anim .imp{opacity:0;transform:translateY(-18px);animation:drop .55s cubic-bezier(.2,.7,.2,1) forwards}
.anim .lbl,.anim .leader,.anim .hand,.anim .dimline,.anim .dim{opacity:0;animation:fade .6s ease forwards;animation-delay:1.6s}
.anim .shade{opacity:0;animation:fade 1.2s ease 1.4s forwards,shade 40s ease-in-out infinite alternate}
.anim .ground{stroke-dasharray:900;stroke-dashoffset:900;animation:draw 1s ease forwards}
@keyframes drop{to{opacity:1;transform:translateY(0)}}
@keyframes fade{to{opacity:1}}
@keyframes draw{to{stroke-dashoffset:0}}
.bird{fill:var(--soot);cursor:pointer}
.vine{cursor:pointer}
@media (prefers-reduced-motion:reduce){
  .okno,.shade,.anim .shade{animation:none}
  .anim .stone,.anim .pier,.anim .imp,.anim .lbl,.anim .leader,.anim .hand,.anim .dimline,.anim .dim{animation:none;opacity:1;transform:none}
  .anim .ground{animation:none;stroke-dashoffset:0}
}
/* разделы */
section{padding:88px 0;border-top:1px solid var(--line)}
h2{font:400 40px/1.2 "PT Serif";margin:0 0 14px}
.lead{color:var(--soft);max-width:600px;margin:0 0 44px}
.spec{width:100%;border-collapse:collapse}
.spec tr{transition:background .2s}
.spec tr.on{background:var(--paper2)}
.spec td{padding:22px 0;border-top:1px solid var(--line);vertical-align:top}
.spec tr:last-child td{border-bottom:1px solid var(--line)}
.spec .n{width:64px;font:400 15px "PT Sans",Arial,sans-serif;color:var(--red);padding-top:28px}
.spec .nm{width:32%;font-size:22px;line-height:1.35;padding-right:30px}
.spec .w{color:var(--soft);padding-right:40px;font-size:17px}
.spec .pr{width:180px;text-align:right;font:400 16px "PT Sans",Arial,sans-serif;white-space:nowrap;padding-top:28px}
.works{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.sheet{background:var(--paper2);border:1px solid var(--line);padding:26px 26px 20px;position:relative;min-height:236px;display:flex;flex-direction:column;text-decoration:none;color:inherit;transition:transform .2s,box-shadow .2s}
a.sheet:hover{transform:translateY(-2px);box-shadow:0 8px 24px -14px rgba(60,60,62,.5)}
.sheet.empty{background:transparent;border:1.5px dashed var(--line);justify-content:center}
.sheet h3{font:400 23px/1.25 "PT Serif";margin:0 0 8px;padding-right:44px}
.sheet .u{font:400 14px "PT Sans",Arial,sans-serif;color:var(--soft);margin-bottom:10px}
.sheet p{color:var(--soft);margin:0 0 auto;font-size:16px}
.sheet .st{margin-top:22px;display:flex;font:400 11px "PT Sans",Arial,sans-serif;letter-spacing:.14em;text-transform:uppercase;border:1px solid var(--ink);align-self:flex-start}
.sheet .st span{padding:6px 10px;border-right:1px solid var(--ink)}
.sheet .st span:last-child{border-right:0}
.sheet .st .r{color:var(--red)}
.sheet .corner{position:absolute;right:18px;top:18px;width:30px;height:30px;fill:var(--ink)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
.step .c{width:44px;height:44px;border:2px solid var(--red);border-radius:50%;display:flex;align-items:center;justify-content:center;font:400 20px "PT Sans",Arial,sans-serif;color:var(--red);margin-bottom:18px}
.step h3{font:400 22px "PT Serif";margin:0 0 8px}
.step p{color:var(--soft);margin:0;font-size:17px}
.price{margin-top:50px;padding:26px 30px;border:1px solid var(--line);background:var(--paper2);display:flex;gap:30px;align-items:center;flex-wrap:wrap}
.price b{font-weight:400;font-size:23px}
.price span{color:var(--soft);font-size:16px}
.about{display:grid;grid-template-columns:1fr 1.4fr;gap:60px;align-items:start}
.about .port{aspect-ratio:1/1;max-width:380px;background:var(--paper2);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.about .port svg{width:60%;height:60%;fill:var(--ink);opacity:.9}
.about p{margin:0 0 16px}
.faq details{border-top:1px solid var(--line);padding:18px 0}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-size:21px;list-style:none;display:flex;justify-content:space-between;gap:20px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--red);font-family:"PT Sans";font-size:26px;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--soft);margin:12px 0 0;max-width:720px}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.contact .ways{display:flex;flex-direction:column;gap:14px}
.contact .ways a{display:flex;justify-content:space-between;align-items:center;border:1px solid var(--line);padding:16px 20px;text-decoration:none;font:400 17px "PT Sans",Arial,sans-serif;transition:border-color .2s,background .2s}
.contact .ways a:hover{border-color:var(--ink);background:var(--paper2)}
.contact .ways a small{color:var(--soft);font-size:14px}
footer{border-top:1px solid var(--ink);padding:40px 0 56px}
footer .wrap{display:flex;justify-content:space-between;align-items:flex-end;font:400 15px/1.7 "PT Sans",Arial,sans-serif;color:var(--soft);gap:30px;flex-wrap:wrap}
.ornament{height:34px;margin:0 auto;display:block;opacity:.9}
@media (max-width:760px){
 .wrap{padding:0 20px}
 header .wrap{height:64px} nav a:not(.btn){display:none} nav{gap:0}
 .btn{padding:10px 18px;font-size:15px}
 .hero .wrap{grid-template-columns:1fr;gap:26px;padding:26px 20px 44px;min-height:0}
 .hero h1{font-size:23px;margin-top:22px}
 .hero p{font-size:16px}
 .hero .cta{flex-direction:column;align-items:flex-start;gap:16px}
 .okno{width:70%;left:-20%;top:-6%}
 .works,.steps,.about,.contact{grid-template-columns:1fr}
 .about .port{max-width:320px}
 .spec .w{display:none}
 .spec .nm{width:auto;font-size:19px}
 .spec .pr{width:auto;font-size:15px}
 h2{font-size:30px}
 section{padding:56px 0}
 .faq summary{font-size:18px}
}

/* сажа: тёмные листы */
.num{font-family:"Old Standard TT","PT Serif",serif}
.hero .wm svg{stroke:var(--soot)}
.stone.key{fill:var(--soot)}
.bird{fill:var(--soot)}
.vine{fill:var(--soot)} .vine .berry{fill:var(--red)}
.anim .vine{opacity:0;animation:fade .8s ease forwards;animation-delay:1.1s}
section.dark{background:var(--soot);color:var(--paper);border-top:0}
section.dark .lead{color:#B9B8B3}
section.dark .sheet{border-color:rgba(226,225,220,.45);color:var(--paper);background:transparent}
section.dark .sheet p,section.dark .sheet .u{color:#B9B8B3}
section.dark .sheet .st{border-color:var(--paper)} section.dark .sheet .st span{border-color:var(--paper)}
section.dark .sheet .st .r{color:#D9654A}
section.dark .sheet .corner{fill:var(--paper)}
section.dark a.sheet:hover{background:rgba(226,225,220,.06);box-shadow:none}
section.dark .sheet.empty{border-color:rgba(226,225,220,.35)}
.sheet{background:transparent}
footer{background:var(--soot);color:#B9B8B3;border-top:0;padding:56px 0 64px}
footer .brand svg{fill:var(--paper)} footer .brand .t{color:var(--paper)}
footer .quote{font:italic 20px/1.5 "PT Serif";color:var(--paper);max-width:520px;margin:0 0 6px}
footer .quote small{display:block;font:400 14px "Old Standard TT","PT Serif",serif;font-style:normal;color:#B9B8B3;letter-spacing:.04em;margin-top:6px}
footer .wrap{align-items:flex-start}
footer .cols{display:flex;gap:60px;flex-wrap:wrap}
.spec .n{font-family:"Old Standard TT","PT Serif",serif;font-size:22px;padding-top:24px}
.sheet .st span:first-child{font-family:"Old Standard TT","PT Serif",serif;letter-spacing:.06em;font-size:13px;text-transform:none}
.step .c{font-family:"Old Standard TT","PT Serif",serif;font-size:22px}

.keylbl{fill:var(--paper)!important}
.hero .draw{padding-bottom:10px}