/* bricks — кирпичная кладка. namespace .bk */
:root{
  --mortar:#e8e2d8;
  --panel:#f4f0e8;
  --terra:#7c3a2d;
  --terra-d:#5e2a20;
  --graphite:#2b2b2b;
  --ochre:#d99a3a;
  --ochre-d:#a8741f;
  --ink:#241f1c;
  --half:56px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--mortar);color:var(--ink);
  font-family:"Ubuntu Sans","Segoe UI",Tahoma,sans-serif;font-size:16px;line-height:1.62}
img{max-width:100%}

.bk{width:100%}
.bk p{margin:0 0 14px}
.bk a{color:var(--terra);text-decoration:none;border-bottom:1px solid rgba(124,58,45,.35)}
.bk a:hover{color:var(--terra-d)}
.bk ul{margin:0 0 14px;padding-left:20px}
.bk li{margin-bottom:6px}

.bkIn{max-width:1100px;margin:0 auto}

/* ---------- шов раствора ---------- */
.bkJoint{height:6px;border-top:1px solid rgba(43,43,43,.12);border-bottom:1px solid rgba(43,43,43,.12);
  background:
    radial-gradient(circle at 3px 2px, rgba(43,43,43,.34) .9px, rgba(0,0,0,0) 1.3px) 0 0/9px 6px,
    radial-gradient(circle at 7px 4px, rgba(124,58,45,.30) .9px, rgba(0,0,0,0) 1.3px) 0 0/14px 6px,
    radial-gradient(circle at 5px 1px, rgba(255,255,255,.55) .9px, rgba(0,0,0,0) 1.3px) 0 0/11px 6px,
    linear-gradient(180deg,#ded6c8,#cdc3b2)}

/* ---------- шапка ---------- */
.bkTop{display:flex;align-items:center;justify-content:space-between;gap:14px;
  max-width:1100px;margin:0 auto;padding:13px 20px}
.bkLogo{display:flex;align-items:center;gap:11px;border-bottom:0}
.bk a.bkLogo{border-bottom:0}
.bkMark{display:block;width:46px;height:38px;flex:none}
.bkWord{font-family:"Ysabeau SC","Ubuntu Sans",serif;font-weight:700;font-size:25px;line-height:1;
  color:var(--ink);letter-spacing:.04em}
.bkWordSub{display:block;font-family:"Ubuntu Sans",sans-serif;font-size:10px;font-weight:500;
  letter-spacing:.22em;color:#5f574e;margin-top:3px}

/* ---------- кнопки ---------- */
.bk a.bkGo{display:inline-block;background:var(--terra);color:#fffaf3;font-weight:700;
  padding:14px 28px;border:1px solid var(--terra-d);border-radius:3px;border-bottom:1px solid var(--terra-d);
  box-shadow:0 3px 0 var(--terra-d);letter-spacing:.015em;text-align:center;line-height:1.25}
.bk a.bkGo:hover{background:#8f4433;color:#fffaf3}
.bk a.bkGoSm{padding:10px 17px;font-size:14px}
.bk a.bkGoAlt{background:var(--ochre);color:#241f1c;border-color:var(--ochre-d);box-shadow:0 3px 0 var(--ochre-d)}
.bk a.bkGoAlt:hover{background:#e6a949;color:#241f1c}

/* ---------- hero ---------- */
.bkHero{padding:34px 20px 40px}
.bkHero h1{font-family:"Ysabeau SC","Ubuntu Sans",serif;font-weight:700;
  font-size:clamp(29px,6.4vw,52px);line-height:1.06;margin:0 0 16px;letter-spacing:.01em;
  color:var(--ink);text-shadow:0 1px 0 rgba(255,255,255,.7)}
.bkLead{font-size:clamp(15px,3.6vw,18px);max-width:720px;margin:0 0 22px;color:#3b332d}
.bkCtaRow{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:26px}
.bkCtaNote{font-size:13px;color:#5f574e}
.bkStats{display:grid;grid-template-columns:repeat(4,1fr);gap:9px}
.bkStat{background:var(--panel);border:1px solid rgba(43,43,43,.16);border-radius:3px;
  box-shadow:0 2px 0 rgba(43,43,43,.09);padding:13px 15px}
.bkStatN{font-family:"Ysabeau SC","Ubuntu Sans",serif;font-size:27px;line-height:1.05;color:var(--terra);
  text-shadow:0 1px 0 rgba(255,255,255,.85)}
.bkStatT{font-size:12.5px;color:#655c53;letter-spacing:.04em;margin-top:3px}

/* ---------- ряд кладки ---------- */
.bkCourse{padding:34px 20px 36px}
.bkCourseA{background:linear-gradient(180deg,#ebe5db,#e5dfd4)}
.bkCourseB{background:linear-gradient(180deg,#e5dfd4,#ebe5db)}
.bkCourseA .bkIn{padding-left:var(--half)}
.bkCourseB .bkIn{padding-right:var(--half)}

/* замковый кирпич */
.bkKey{display:flex;align-items:center;gap:15px;background:var(--graphite);border-radius:3px;
  padding:13px 22px;margin:0 0 20px;
  box-shadow:0 3px 0 rgba(36,31,28,.28),inset 0 1px 0 rgba(255,255,255,.08)}
.bkKeyNum{flex:none;font-size:12px;font-weight:700;letter-spacing:.18em;color:var(--ochre);
  border:1px solid rgba(217,154,58,.55);border-radius:2px;padding:6px 9px;white-space:nowrap}
.bkKey h2{margin:0;font-family:"Ysabeau SC","Ubuntu Sans",serif;font-weight:700;
  font-size:clamp(20px,4.1vw,31px);line-height:1.13;color:#f6f2ea;letter-spacing:.015em}

.bkCourse h3{font-family:"Ubuntu Sans",sans-serif;font-size:17px;font-weight:700;
  margin:22px 0 10px;color:var(--terra)}
.bkTxt{max-width:840px}

/* ---------- стена каталога ---------- */
.bkWall{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin:16px 0 18px}
.bkBrick{background:var(--panel);border:1px solid rgba(43,43,43,.16);border-radius:3px;
  box-shadow:0 2px 0 rgba(43,43,43,.10);padding:15px 17px}
.bkW2{grid-column:span 2}
.bkW1{grid-column:span 1}
.bkTile{position:relative;display:flex;flex-direction:column;justify-content:space-between;min-height:132px}
.bkRtp{font-family:"Ysabeau SC","Ubuntu Sans",serif;font-size:37px;line-height:.95;color:#8d4c3c;
  text-shadow:0 1px 0 rgba(255,255,255,.9),0 -1px 0 rgba(43,43,43,.16);letter-spacing:.01em}
.bkRtpL{font-size:11px;letter-spacing:.2em;color:#6b6259;display:block;margin-bottom:2px}
.bkTileN{font-size:15.5px;font-weight:600;margin:10px 0 4px;line-height:1.25}
.bkMeta{font-size:12.5px;color:#6b6259;line-height:1.45}
.bkChip{display:inline-block;font-size:11px;letter-spacing:.08em;color:#6b4a1c;
  background:rgba(217,154,58,.22);border:1px solid rgba(217,154,58,.5);border-radius:2px;
  padding:2px 7px;margin-top:8px}

/* ---------- ступени пакета ---------- */
.bkSteps{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:16px 0 18px}
.bkStepN{font-size:11.5px;letter-spacing:.18em;color:#6b6259}
.bkStepP{font-family:"Ysabeau SC","Ubuntu Sans",serif;font-size:31px;line-height:1;color:var(--terra);margin:5px 0 6px}
.bkStepD{font-size:13.5px;color:#4a423b}

/* ---------- клуб: растущая кладка ---------- */
.bkTiers{display:flex;flex-direction:column-reverse;gap:7px;margin:16px 0 18px}
.bkTier{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;
  background:var(--panel);border:1px solid rgba(43,43,43,.16);border-radius:3px;
  box-shadow:0 2px 0 rgba(43,43,43,.10);padding:14px 18px}
.bkT1{min-height:62px}
.bkT2{min-height:72px}
.bkT3{min-height:82px}
.bkT4{min-height:94px}
.bkT5{min-height:106px}
.bkT6{min-height:132px;padding-top:34px;border-radius:0 0 3px 3px;
  background:linear-gradient(180deg,#efe9de,#f4f0e8);
  clip-path:polygon(0 16px,8% 16px,8% 0,20% 0,20% 16px,32% 16px,32% 0,44% 0,44% 16px,56% 16px,56% 0,68% 0,68% 16px,80% 16px,80% 0,92% 0,92% 16px,100% 16px,100% 100%,0 100%)}
.bkTierN{font-family:"Ysabeau SC","Ubuntu Sans",serif;font-size:24px;line-height:1;min-width:118px;color:var(--ink)}
.bkTierC{font-size:22px;font-weight:700;color:var(--terra);min-width:70px}
.bkTierD{font-size:13.5px;color:#554c45;flex:1 1 220px}

/* ---------- отзыв ---------- */
.bkSay{border-left:5px solid var(--ochre);background:#efe9de;border-radius:0 3px 3px 0;
  padding:14px 18px;margin:18px 0;max-width:840px}
.bkSay p{margin:0 0 8px;font-size:15px}
.bkSayWho{font-size:12.5px;color:#5f574e;letter-spacing:.03em}

/* ---------- таблицы ---------- */
.bkTableWrap{overflow-x:auto;margin:16px 0 18px;-webkit-overflow-scrolling:touch}
.bkTable{border-collapse:collapse;width:100%;min-width:560px;background:var(--panel);
  border:1px solid rgba(43,43,43,.16);border-radius:3px}
.bkTable caption{caption-side:top;text-align:left;font-size:12.5px;color:#5f574e;padding:0 0 7px}
.bkTable th,.bkTable td{padding:11px 14px;text-align:left;font-size:14px;
  border-bottom:1px solid rgba(43,43,43,.12)}
.bkTable th{background:rgba(43,43,43,.07);font-weight:700;font-size:12.5px;letter-spacing:.06em;color:#3b332d}
.bkTable tr:last-child td{border-bottom:0}
.bkSpeed{display:inline-flex;gap:3px;vertical-align:middle;margin-right:8px}
.bkSpeed i{display:block;width:13px;height:9px;border-radius:1px;
  background:rgba(43,43,43,.12);border:1px solid rgba(43,43,43,.22)}
.bkSpeed i.bkOn{background:var(--terra);border-color:var(--terra-d)}

/* ---------- FAQ ---------- */
.bkQ{background:var(--panel);border:1px solid rgba(43,43,43,.16);border-radius:3px;
  box-shadow:0 2px 0 rgba(43,43,43,.08);margin-bottom:8px;max-width:900px}
.bkQ summary{cursor:pointer;padding:13px 18px;font-weight:600;font-size:15.5px;list-style:none;
  display:flex;gap:11px;align-items:flex-start;color:var(--ink)}
.bkQ summary::-webkit-details-marker{display:none}
.bkQ summary::before{content:"";flex:none;width:11px;height:11px;margin-top:6px;border-radius:1px;
  background:var(--ochre);border:1px solid var(--ochre-d)}
.bkQ[open] summary::before{background:var(--terra);border-color:var(--terra-d)}
.bkQ p{margin:0;padding:0 18px 15px 40px;font-size:14.5px;color:#413a34}

/* ---------- заметка автора + подвал ---------- */
.bkNote{max-width:900px;background:var(--panel);border:1px solid rgba(43,43,43,.16);
  border-left:5px solid var(--graphite);border-radius:0 3px 3px 0;padding:16px 20px}
.bkNote h3{margin:0 0 9px}
.bkNote p{font-size:14px;color:#453e37}
.bkAge{display:inline-block;margin-top:4px;font-size:12.5px;font-weight:700;letter-spacing:.06em;
  color:#fffaf3;background:var(--graphite);border-radius:2px;padding:5px 10px}
.bkFoot{background:var(--graphite);color:#cfc7bd;padding:28px 20px 34px}
.bkFoot .bkIn{display:flex;flex-wrap:wrap;gap:20px 40px}
.bkFootCol{flex:1 1 280px;font-size:13.5px;line-height:1.6}
.bkFootCol h4{margin:0 0 9px;font-family:"Ysabeau SC","Ubuntu Sans",serif;font-size:19px;
  font-weight:700;color:#f2eee6;letter-spacing:.03em}
.bk .bkFoot a{color:var(--ochre);border-bottom-color:rgba(217,154,58,.4)}
.bk .bkFoot a:hover{color:#eab254}
.bk .bkFoot a.bkGo{color:#fffaf3;border-bottom-color:var(--terra-d);margin-top:6px}
.bk .bkFoot a.bkGo:hover{color:#fffaf3}
.bk .bkFoot a.bkGoAlt{color:#241f1c;border-bottom-color:var(--ochre-d)}
.bk .bkFoot a.bkGoAlt:hover{color:#241f1c}
.bkFootLine{border-top:1px solid rgba(255,255,255,.12);margin-top:22px;padding-top:16px;
  font-size:12.5px;color:#a79e93;max-width:1100px;margin-left:auto;margin-right:auto}

/* ---------- адаптив ---------- */
@media (max-width:980px){
  :root{--half:30px}
  .bkWall{grid-template-columns:repeat(2,1fr)}
  .bkW2,.bkW1{grid-column:span 1}
  .bkSteps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  :root{--half:0px}
  .bkCourse{padding:24px 16px 26px}
  .bkHero{padding:24px 16px 30px}
  .bkTop{padding:11px 16px}
  .bkFoot{padding:24px 16px 28px}
  .bkStats{grid-template-columns:repeat(2,1fr)}
  .bkWall{grid-template-columns:1fr}
  .bkSteps{grid-template-columns:1fr}
  .bkKey{flex-direction:column;align-items:flex-start;gap:9px;padding:13px 16px}
  .bkTierN{min-width:0;flex:1 1 100%}
  .bkT6{clip-path:polygon(0 14px,10% 14px,10% 0,26% 0,26% 14px,42% 14px,42% 0,58% 0,58% 14px,74% 14px,74% 0,90% 0,90% 14px,100% 14px,100% 100%,0 100%);padding-top:30px}
  .bkMark{width:40px;height:33px}
  .bkWord{font-size:21px}
  .bk a.bkGoSm{padding:9px 14px;font-size:13.5px}
  .bkQ p{padding-left:18px}
}