/* ═══════════════════════════════════════════════════════════
   Специально для бассейна «Восток» · EDITORIAL TECHNICAL MANUAL · v4
   Lean editorial light theme · все исходные классы сохранены
   ═══════════════════════════════════════════════════════════ */

:root{
  --paper:#f7f3e8;
  --paper-2:#efe9d8;
  --paper-3:#fbf8ee;
  --ink:#0a0a0a;
  --ink-2:#1c1c1c;
  --muted:#6b6759;
  --muted-2:#9a9485;
  --rule:#1a1a1a;
  --rule-light:#cfc8b3;
  --rule-dotted:#e0d9c2;
  --accent:#8a5a2b;
  --accent-soft:#b8956a;
  --warn:#b91c1c;
  --warn-soft:rgba(185,28,28,.06);
  --ok:#2d6a4f;
  --ok-soft:rgba(45,106,79,.08);
  --serif:'Cormorant Garamond',Georgia,serif;
  --sans:'Manrope',system-ui,-apple-system,sans-serif;
  --mono:'JetBrains Mono','IBM Plex Mono',ui-monospace,Menlo,monospace;
  --container:1080px;
  --gutter:32px;

  /* Legacy aliases (на случай если где-то остались ссылки) */
  --abyss:var(--paper);
  --pearl:var(--ink);
  --pearl-dim:var(--ink-2);
  --pearl-low:var(--muted);
  --gold:var(--accent);
  --gold-bright:var(--accent);
  --gold-dim:var(--accent-soft);
  --green:var(--ok);
  --mist:var(--rule-light);
  --mist-2:var(--rule);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--serif);
  font-weight:400;
  font-size:17px;
  line-height:1.65;
  font-feature-settings:"kern","liga","onum";
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;cursor:pointer}
a{color:var(--ink);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent)}
::selection{background:var(--ink);color:var(--paper)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ─── Scrollbar ─── */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:var(--paper-2)}
::-webkit-scrollbar-thumb{background:var(--accent-soft)}
::-webkit-scrollbar-thumb:hover{background:var(--accent)}
html{scrollbar-color:var(--accent-soft) var(--paper-2);scrollbar-width:thin}

/* ═══════════════════════════════════════════════════════════
   LOADER
   ═══════════════════════════════════════════════════════════ */
.loader{position:fixed;inset:0;z-index:9999;background:var(--paper);display:flex;align-items:center;justify-content:center;transition:opacity .6s,visibility .6s}
.loader.hidden{opacity:0;visibility:hidden;pointer-events:none}
.loader-inner{text-align:center}
.loader-wing{width:64px;height:80px;animation:loaderPulse 1.6s ease-in-out infinite;color:var(--ink)}
.loader-wing ellipse{stroke:var(--ink) !important;stroke-width:1.2 !important;opacity:.7}
.loader-text{margin-top:18px;font-family:var(--sans);font-size:11px;font-weight:600;letter-spacing:.5em;text-transform:uppercase;color:var(--ink);opacity:.9}
@keyframes loaderPulse{0%,100%{opacity:.4;transform:scale(1)}50%{opacity:1;transform:scale(1.04)}}

/* ─── Hide ambient (light theme не нуждается) ─── */
.cursor-glow,.particles,.bubble{display:none !important}

/* ─── Skip link ─── */
.skip-link{position:absolute;top:-100px;left:16px;background:var(--ink);color:var(--paper);padding:10px 18px;font-family:var(--sans);font-size:11px;font-weight:600;letter-spacing:.15em;text-transform:uppercase;text-decoration:none;z-index:2000;transition:top .2s}
.skip-link:focus{top:16px}

/* ═══════════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════════ */
.hero{
  position:relative;
  display:block;
  overflow:hidden;
  background:var(--paper);
  border-bottom:1px solid var(--rule);
}
.hero-video{
  position:relative;
  top:auto;left:auto;right:auto;
  width:100%;
  height:54vh;
  max-height:560px;
  min-height:340px;
  object-fit:cover;
  filter:grayscale(.25) brightness(.95) contrast(1.05);
  transform:none;
  display:block;
  z-index:1;
}
.hero-overlay{
  position:absolute;
  top:0;left:0;right:0;
  height:54vh;
  max-height:560px;
  min-height:340px;
  background:linear-gradient(180deg,rgba(0,0,0,.06) 0%,rgba(247,243,232,0) 25%,rgba(247,243,232,.85) 92%,var(--paper) 100%);
  inset:auto;
  z-index:2;
  pointer-events:none;
}
.hero-content{
  position:relative;
  z-index:3;
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:64px var(--gutter) 80px;
  text-align:left;
  background:var(--paper);
}
.hero-badge{
  display:inline-block;
  font-family:var(--sans);
  font-size:10px;
  font-weight:600;
  letter-spacing:.32em;
  text-transform:uppercase;
  color:var(--accent);
  background:none;
  border:none;
  padding:0 0 0 48px;
  margin-bottom:24px;
  position:relative;
  backdrop-filter:none;
}
.hero-badge::before{content:'';position:absolute;left:0;top:50%;width:36px;height:1px;background:var(--accent)}
.hero h1{
  font-family:var(--serif);
  font-size:clamp(48px,8vw,108px);
  font-weight:300;
  line-height:.95;
  letter-spacing:-1.5px;
  margin-bottom:20px;
  max-width:900px;
}
.hero h1 em{font-style:italic;color:var(--accent);font-weight:400}
.hero-sub{
  font-family:var(--serif);
  font-size:20px;
  font-style:italic;
  color:var(--ink-2);
  max-width:560px;
  margin-bottom:36px;
  line-height:1.5;
}
.hero-stats{
  display:flex;
  gap:0;
  margin-bottom:36px;
  border-top:1px solid var(--rule);
  border-bottom:1px solid var(--rule);
  max-width:680px;
  flex-wrap:nowrap;
  justify-content:flex-start;
}
.stat{
  flex:1;
  padding:18px 24px 18px 0;
  background:none;
  border:none;
  border-right:1px solid var(--rule-light);
  text-align:left;
  min-width:auto;
  backdrop-filter:none;
  transition:none;
}
.stat:last-child{border-right:none}
.stat:hover{border-right-color:var(--rule-light);transform:none;box-shadow:none}
.stat-val{
  display:block;
  font-family:var(--serif);
  font-size:32px;
  font-style:normal;
  font-weight:400;
  color:var(--ink);
  line-height:1;
  margin-bottom:6px;
}
.stat-label{
  display:block;
  font-family:var(--sans);
  font-size:10px;
  font-weight:600;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
}
.hero-cta{
  background:var(--ink);
  color:var(--paper);
  border:none;
  padding:18px 40px;
  font-family:var(--sans);
  font-style:normal;
  font-weight:600;
  font-size:13px;
  letter-spacing:.2em;
  text-transform:uppercase;
  cursor:pointer;
  transition:all .25s;
  position:relative;
  overflow:visible;
}
.hero-cta::before{display:none}
.hero-cta:hover{background:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:none}

.hero-actions{
  display:flex;
  gap:18px;
  align-items:center;
  flex-wrap:wrap;
  margin-bottom:0;
}
.hero-cta-secondary{
  font-family:var(--sans);
  font-size:12px;
  font-weight:600;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--ink);
  text-decoration:none;
  border-bottom:1px solid var(--ink);
  padding:18px 0;
  transition:all .2s;
  display:inline-block;
}
.hero-cta-secondary:hover{color:var(--accent);border-color:var(--accent)}

.scroll-hint{
  position:absolute;
  bottom:24px;
  left:50%;
  transform:translateX(-50%);
  z-index:5;
  width:1px;
  height:48px;
  background:var(--rule);
  opacity:.5;
}
.scroll-hint::after{content:'';position:absolute;bottom:-3px;left:-3px;width:7px;height:7px;background:var(--accent);border-radius:50%}
.scroll-hint span{display:none}

/* ═══════════════════════════════════════════════════════════
   PROGRESS NAV
   ═══════════════════════════════════════════════════════════ */
.progress-nav{
  position:sticky;
  top:0;
  z-index:50;
  background:var(--paper);
  border-bottom:1px solid var(--rule);
  backdrop-filter:none;
}
.progress-inner{max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.progress-steps{display:flex;gap:0}
.pstep{
  flex:1;
  background:none;
  border:none;
  padding:18px 6px 14px;
  cursor:pointer;
  text-align:center;
  color:var(--muted);
  transition:color .2s;
  border-bottom:2px solid transparent;
  font-family:var(--sans);
}
.pstep:hover{color:var(--ink)}
.pstep.active{color:var(--ink);border-bottom-color:var(--ink)}
.pstep.visited{color:var(--ink-2)}
.pstep.visited .pnum{border-color:var(--ink-2)}
.pstep.completed{color:var(--accent)}
.pstep.completed .pnum{background:var(--accent);color:var(--paper);border-color:var(--accent)}
.pnum{
  display:block;
  width:28px;height:28px;line-height:26px;
  border-radius:50%;
  border:1px solid currentColor;
  margin:0 auto 6px;
  font-family:var(--sans);
  font-style:normal;
  font-size:12px;
  font-weight:600;
  transition:all .2s;
  background:var(--paper);
}
.pstep.active .pnum{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.pname{
  display:block;
  font-family:var(--sans);
  font-size:10px;
  font-weight:600;
  letter-spacing:.14em;
  text-transform:uppercase;
}
.progress-bar{height:1px;background:var(--rule-light)}
.progress-fill{height:100%;background:var(--ink);transition:width .4s ease;width:0;box-shadow:none}

/* ═══════════════════════════════════════════════════════════
   CONTAINER + INTRO
   ═══════════════════════════════════════════════════════════ */
.steps-container{max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}

.intro{padding:80px 0 64px;text-align:center;border-bottom:1px solid var(--rule-light);margin-bottom:32px}
.intro-inner{max-width:760px;margin:0 auto}
.intro h2{
  font-family:var(--serif);
  font-size:48px;
  font-weight:300;
  margin-bottom:20px;
  letter-spacing:-1px;
}
.intro h2 em{font-style:italic;color:var(--accent);font-weight:400}
.intro-desc{
  font-size:18px;
  line-height:1.7;
  color:var(--ink-2);
  max-width:640px;
  margin:0 auto 40px;
  font-family:var(--serif);
}
.intro-desc strong{color:var(--accent);font-weight:600}

.timeline{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:0;
  margin:0 auto 28px;
  flex-wrap:nowrap;
  max-width:700px;
}
.tl-item{flex:1;text-align:center;padding:0 4px;min-width:0}
.tl-num{
  width:40px;height:40px;line-height:38px;
  border-radius:50%;
  border:1px solid var(--ink);
  background:var(--paper);
  font-family:var(--serif);
  font-style:italic;
  font-size:18px;
  color:var(--ink);
  margin:0 auto 10px;
  font-weight:400;
}
.tl-label{
  font-family:var(--sans);
  font-size:10px;
  font-weight:600;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--ink);
  margin-bottom:2px;
}
.tl-time{font-family:var(--serif);font-style:italic;font-size:13px;color:var(--muted)}
.tl-line{width:24px;height:1px;background:var(--rule-light);flex-shrink:0;margin:20px 0 0;align-self:flex-start;opacity:1}
.intro-note{
  font-family:var(--serif);
  font-style:italic;
  font-size:15px;
  color:var(--muted);
  margin:0;
}

/* ═══════════════════════════════════════════════════════════
   STEP PANELS
   ═══════════════════════════════════════════════════════════ */
.step-panel{display:none;padding:48px 0 64px}
.step-panel.active{display:block;animation:slideLeft .35s ease}
.step-header{margin-bottom:40px;padding-bottom:32px;border-bottom:1px solid var(--rule)}
.step-badge{
  display:inline-block;
  font-family:var(--sans);
  font-size:10px;
  font-weight:700;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--accent);
  margin-bottom:14px;
  margin-right:14px;
}
.step-header h2{
  font-family:var(--serif);
  font-size:clamp(40px,6vw,72px);
  font-weight:300;
  line-height:1;
  letter-spacing:-1.5px;
  margin:8px 0 16px;
}
.step-header h2 em{font-style:italic;color:var(--accent);font-weight:400}
.step-header p{
  font-size:18px;
  line-height:1.6;
  color:var(--ink-2);
  max-width:640px;
  font-family:var(--serif);
}

/* Difficulty pill */
.diff{
  display:inline-block;
  font-family:var(--sans);
  font-size:9px;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  padding:4px 10px;
  border:1px solid currentColor;
  margin-left:0;
  margin-bottom:14px;
  vertical-align:middle;
  background:none;
}
.diff-easy{color:var(--ok)}
.diff-medium{color:var(--accent)}
.diff-hard{color:var(--warn)}

/* Step nav */
.step-nav{
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid var(--rule);
}
.btn-next,.btn-finish{
  background:var(--ink);
  color:var(--paper);
  border:none;
  padding:14px 30px;
  font-family:var(--sans);
  font-style:normal;
  font-size:12px;
  font-weight:600;
  letter-spacing:.18em;
  text-transform:uppercase;
  cursor:pointer;
  transition:all .25s;
  position:static;
  overflow:visible;
}
.btn-next::before,.btn-finish::before{display:none}
.btn-next:hover,.btn-finish:hover{background:var(--accent);transform:translateY(-1px);box-shadow:none}
.btn-back{
  background:none;
  color:var(--ink);
  border:1px solid var(--ink);
  padding:14px 28px;
  font-family:var(--sans);
  font-style:normal;
  font-size:12px;
  font-weight:600;
  letter-spacing:.18em;
  text-transform:uppercase;
  cursor:pointer;
  transition:all .25s;
}
.btn-back:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-finish{background:var(--accent);color:#fff}
.btn-finish:hover{background:var(--ink)}

/* ═══════════════════════════════════════════════════════════
   SIZE PICKER
   ═══════════════════════════════════════════════════════════ */
.size-picker{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-bottom:32px;border:1px solid var(--rule)}
.size-card{
  background:var(--paper);
  backdrop-filter:none;
  border:none;
  border-right:1px solid var(--rule-light);
  padding:36px 24px;
  text-align:center;
  cursor:pointer;
  transition:background .25s;
  position:relative;
}
.size-card:last-child{border-right:none}
.size-card:hover{background:var(--paper-2);transform:none;box-shadow:none}
.size-card.selected{background:var(--ink);color:var(--paper);box-shadow:none}
.size-card.selected .size-val,
.size-card.selected .size-name,
.size-card.selected .size-desc{color:var(--paper)}
.size-val{
  display:block;
  font-family:var(--serif);
  font-size:64px;
  font-style:italic;
  font-weight:300;
  color:var(--ink);
  line-height:1;
}
.size-val sup{font-size:22px;font-style:normal;font-family:var(--sans);font-weight:500;vertical-align:top;margin-left:4px;color:var(--muted)}
.size-card.selected .size-val sup{color:var(--paper)}
.size-name{font-family:var(--sans);font-size:11px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--ink);margin-top:14px;font-style:normal}
.size-desc{font-family:var(--serif);font-style:italic;font-size:13px;color:var(--muted);margin-top:6px}
.size-rec{
  position:absolute;
  top:-1px;right:-1px;
  background:var(--accent);
  color:#fff;
  font-family:var(--sans);
  font-size:9px;
  font-weight:700;
  letter-spacing:.15em;
  text-transform:uppercase;
  padding:5px 10px;
}
.step-ref{margin-top:20px;border:1px solid var(--rule-light);max-width:520px;background:var(--paper-3);overflow:hidden}
.step-ref img{width:100%;display:block;filter:grayscale(.2) brightness(.95);cursor:zoom-in}

/* ═══════════════════════════════════════════════════════════
   TIER PICKER
   ═══════════════════════════════════════════════════════════ */
.tier-picker{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-bottom:32px;border:1px solid var(--rule)}
.tier-card{
  background:var(--paper);
  backdrop-filter:none;
  border:none;
  border-right:1px solid var(--rule-light);
  padding:32px 24px;
  text-align:left;
  cursor:pointer;
  transition:background .25s;
  position:relative;
}
.tier-card:last-child{border-right:none}
.tier-card:hover{background:var(--paper-2);transform:none}
.tier-card.selected{background:var(--ink);color:var(--paper);box-shadow:none}
.tier-card.selected .tier-name,
.tier-card.selected .tier-price,
.tier-card.selected .tier-desc{color:var(--paper)}
.tier-card.selected .tier-tag{color:var(--accent-soft)}
.tier-tag{
  display:block;
  font-family:var(--sans);
  font-size:9px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:10px;
}
.tier-tag-rec{color:var(--accent)}
.tier-name{
  font-family:var(--serif);
  font-size:24px;
  font-style:italic;
  font-weight:400;
  color:var(--ink);
  margin-bottom:4px;
}
.tier-card.selected .tier-name{color:var(--paper)}
.tier-price{
  font-family:var(--serif);
  font-size:32px;
  font-style:normal;
  font-weight:400;
  color:var(--ink);
  margin:8px 0 12px;
  line-height:1;
}
.tier-desc{font-family:var(--serif);font-size:13px;line-height:1.55;color:var(--ink-2);margin:0}

/* ═══════════════════════════════════════════════════════════
   SHOP LIST
   ═══════════════════════════════════════════════════════════ */
.shop-list{display:flex;flex-direction:column;border:none;border-top:1px solid var(--rule)}
.shop-cat{
  padding:14px 0 10px;
  font-family:var(--sans);
  font-size:10px;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--accent);
  background:none;
  border-bottom:1px solid var(--rule-light);
  font-style:normal;
  margin-top:24px;
}
.shop-cat:first-child{margin-top:0}
.shop-item{
  display:flex;
  align-items:flex-start;
  gap:18px;
  padding:18px 0;
  border-bottom:1px solid var(--rule-dotted);
  transition:none;
}
.shop-item:last-child{border-bottom:1px solid var(--rule-light)}
.shop-item:hover{background:none}
.shop-item.done{opacity:.42}
.shop-item.done .shop-name{text-decoration:line-through}
.shop-check{flex-shrink:0;cursor:pointer;display:flex;align-items:flex-start;padding-top:3px}
.shop-check input[type="checkbox"]{
  width:16px;height:16px;
  accent-color:var(--ink);
  appearance:none;
  -webkit-appearance:none;
  border:1.5px solid var(--ink);
  background:var(--paper);
  cursor:pointer;
  position:relative;
  margin:0;
}
.shop-check input[type="checkbox"]:checked{background:var(--ink)}
.shop-check input[type="checkbox"]:checked::after{content:'✓';position:absolute;top:-2px;left:1px;color:var(--paper);font-size:12px;font-weight:700;line-height:1}
.shop-info{flex:1;min-width:0}
.shop-name{font-family:var(--serif);font-size:17px;color:var(--ink);margin-bottom:4px;font-weight:400;line-height:1.4}
.shop-meta{font-family:var(--sans);font-size:12px;color:var(--muted);margin-bottom:8px}
.shop-meta strong{color:var(--ink);font-weight:600;font-family:var(--mono);font-size:12px}
.shop-links{display:flex;gap:14px;flex-wrap:wrap}
.shop-links a{
  font-family:var(--sans);
  font-style:normal;
  font-size:11px;
  font-weight:600;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink);
  text-decoration:none;
  border-bottom:1px solid var(--ink);
  padding-bottom:2px;
  transition:color .2s;
}
.shop-links a:hover{color:var(--accent);border-color:var(--accent)}
.shop-total{
  margin-top:24px;
  padding:24px 0;
  background:none;
  border:none;
  border-top:2px solid var(--ink);
  border-bottom:2px solid var(--ink);
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  font-family:var(--sans);
  font-size:11px;
  font-weight:600;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--muted);
  font-style:normal;
}
.shop-total strong{
  font-family:var(--serif);
  font-style:italic;
  font-size:36px;
  color:var(--ink);
  font-weight:400;
  letter-spacing:0;
  text-transform:none;
}
.btn-export{
  display:inline-block;
  background:none;
  border:1px solid var(--ink);
  color:var(--ink);
  padding:12px 22px;
  font-family:var(--sans);
  font-style:normal;
  font-size:11px;
  font-weight:600;
  letter-spacing:.18em;
  text-transform:uppercase;
  cursor:pointer;
  transition:all .25s;
  margin-top:18px;
  width:auto;
  text-align:center;
}
.btn-export:hover{background:var(--ink);color:var(--paper)}

/* ═══════════════════════════════════════════════════════════
   INSTRUCTIONS
   ═══════════════════════════════════════════════════════════ */
.tools-needed{
  margin:24px 0;
  padding:18px 22px;
  background:var(--paper-2);
  border:none;
  border-left:3px solid var(--ink);
  font-family:var(--serif);
  font-size:15px;
  line-height:1.6;
  color:var(--ink-2);
}
.tools-needed strong{
  display:block;
  font-family:var(--sans);
  font-size:10px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--ink);
  margin-bottom:6px;
}

.instruction{display:flex;flex-direction:column;gap:48px;margin-top:8px}
.instr-block{display:grid;grid-template-columns:280px 1fr;gap:32px;align-items:start}
.instr-block .instr-text.full{grid-column:1/-1}
.instr-img{
  border:1px solid var(--rule-light);
  overflow:hidden;
  background:var(--paper-3);
  position:relative;
  transition:none;
}
.instr-img::after{display:none}
.instr-img:hover{border-color:var(--ink);box-shadow:none}
.instr-img img{width:100%;display:block;filter:grayscale(.15) brightness(.96);transition:none;cursor:zoom-in}
.instr-img:hover img{transform:none}
.instr-text h3{
  font-family:var(--serif);
  font-size:30px;
  font-weight:400;
  margin-bottom:16px;
  letter-spacing:-.5px;
  line-height:1.15;
  padding-bottom:12px;
  border-bottom:1px solid var(--rule);
  display:flex;
  align-items:baseline;
  gap:14px;
}
.instr-text h3::before{
  content:'';
  display:inline-block;
  width:24px;height:1px;
  background:var(--accent);
  flex-shrink:0;
}
.instr-text ol{padding:0;margin:14px 0 0;list-style:none;counter-reset:proc-step}
.instr-text ol li{
  counter-increment:proc-step;
  font-family:var(--serif);
  font-size:16px;
  line-height:1.7;
  color:var(--ink-2);
  margin-bottom:0;
  padding:14px 0 14px 56px;
  border-bottom:1px solid var(--rule-dotted);
  position:relative;
}
.instr-text ol li::before{
  content:counter(proc-step,decimal-leading-zero);
  position:absolute;
  left:0;
  top:14px;
  font-family:var(--mono);
  font-size:12px;
  font-weight:700;
  color:var(--accent);
  letter-spacing:.5px;
}
.instr-text ol li:last-child{border-bottom:none}
.instr-text ol li strong{color:var(--ink);font-weight:700;background:rgba(138,90,43,.08);padding:1px 5px;font-family:var(--serif)}
.instr-text ul{padding-left:0;margin:8px 0;list-style:none}
.instr-text ul li{
  font-family:var(--serif);
  font-size:14px;
  line-height:1.65;
  color:var(--ink-2);
  margin-bottom:6px;
  padding:0 0 0 16px;
  position:relative;
  border-bottom:none;
  counter-increment:none;
}
.instr-text ul li::before{
  content:'—';
  position:absolute;
  left:0;
  top:0;
  color:var(--accent);
  font-weight:700;
}
.instr-text ul li strong{color:var(--ink);background:none;padding:0;font-weight:700}

.instr-goal{
  font-family:var(--serif);
  font-style:italic;
  font-size:16px;
  line-height:1.55;
  color:var(--ink-2);
  margin:8px 0 18px;
  padding:12px 0 12px 18px;
  border-left:3px solid var(--accent);
  background:none;
}

/* Diagrams */
.diagram-wrap{
  margin:24px 0;
  border:1px solid var(--rule-light);
  background:var(--paper-3);
  padding:32px 24px 24px;
  position:relative;
  text-align:center;
  overflow:hidden;
  backdrop-filter:none;
  box-shadow:none;
}
.diagram-wrap::before{
  content:'FIG';
  position:absolute;
  top:10px;left:14px;
  font-family:var(--mono);
  font-size:9px;
  font-weight:700;
  color:var(--muted);
  letter-spacing:1px;
}
.diagram-wrap svg,.diagram{display:inline-block;margin:0 auto;max-width:100%;height:auto;width:100%;max-width:540px}

/* Light-theme override для diagrams.js (золото на тёмном → чёрное на бумаге) */
.diagram-wrap .diagram ellipse,
.diagram-wrap .diagram path,
.diagram-wrap .diagram line,
.diagram-wrap .diagram rect,
.diagram-wrap .diagram polygon,
.diagram-wrap .diagram circle{
  stroke:var(--ink) !important;
}
.diagram-wrap .diagram text{fill:var(--ink) !important}
.diagram-wrap .diagram .d-dim,
.diagram-wrap .diagram .d-angle{fill:var(--accent) !important}
.diagram-wrap .diagram .d-title{fill:var(--ink) !important;font-style:italic}
.diagram-wrap .diagram .d-label{fill:var(--muted) !important}

.result-box{
  margin-top:18px;
  padding:18px 22px;
  background:var(--paper-2);
  border:none;
  border-left:3px solid var(--ok);
  border-radius:0;
  font-family:var(--serif);
  font-size:15px;
  line-height:1.65;
  color:var(--ink-2);
}
.result-box strong{
  display:block;
  font-family:var(--sans);
  font-size:10px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--ok);
  margin-bottom:6px;
  font-style:normal;
}

.warn-box{
  margin-top:18px;
  padding:18px 22px;
  background:var(--warn-soft);
  border:none;
  border-left:3px solid var(--warn);
  font-family:var(--serif);
  font-size:14px;
  line-height:1.65;
  color:var(--ink-2);
}
.warn-box > strong:first-child{
  display:block;
  font-family:var(--sans);
  font-size:10px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--warn);
  margin-bottom:6px;
  font-style:normal;
}
.warn-box ul{padding-left:0;margin-top:8px;list-style:none}
.warn-box ul li{margin-bottom:6px;padding-left:18px;position:relative;font-size:14px;line-height:1.55}
.warn-box ul li::before{content:'⚠';position:absolute;left:0;top:0;color:var(--warn);font-size:11px}
.warn-box ul li strong{display:inline;background:none;padding:0;font-family:var(--serif);font-size:inherit;font-weight:700;text-transform:none;letter-spacing:0;color:var(--ink);margin:0}

.tip-box{
  margin-top:18px;
  padding:18px 22px;
  background:var(--ok-soft);
  border:none;
  border-left:3px solid var(--ok);
  font-family:var(--serif);
  font-size:14px;
  line-height:1.65;
  color:var(--ink-2);
}
.tip-box > strong:first-child{
  display:block;
  font-family:var(--sans);
  font-size:10px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--ok);
  margin-bottom:6px;
  font-style:normal;
}
.tip-box strong{color:var(--ok)}
.tip-box ul{padding-left:0;list-style:none;margin-top:8px}
.tip-box ul li{padding-left:18px;position:relative;margin-bottom:6px;line-height:1.55}
.tip-box ul li::before{content:'·';position:absolute;left:6px;top:-2px;color:var(--ok);font-size:18px;font-weight:700}
.tip-box ul li strong{color:var(--ink);font-weight:700}

/* Blueprint (Step 0 wing diagram) */
.blueprint{margin:24px 0;padding:32px 24px;border:1px solid var(--rule-light);background:var(--paper-3);text-align:center;backdrop-filter:none;box-shadow:none}
.blueprint-label{font-family:var(--sans);font-size:10px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);margin-bottom:14px}
.wing-svg{width:100%;max-width:480px;height:auto;margin:0 auto}
.wing-svg ellipse,.wing-svg line,.wing-svg path,.wing-svg circle,.wing-svg rect{stroke:var(--ink) !important}
.wing-svg text{fill:var(--ink) !important}
.blueprint-dims{margin-top:14px;font-family:var(--mono);font-size:11px;color:var(--muted);letter-spacing:.5px}
.blueprint-dims strong{color:var(--accent);font-weight:700}

/* ═══════════════════════════════════════════════════════════
   CHECKLISTS
   ═══════════════════════════════════════════════════════════ */
.checks-title{
  font-family:var(--sans);
  font-size:11px;
  font-weight:700;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--ink);
  margin:36px 0 16px;
  padding-top:24px;
  border-top:1px solid var(--rule);
}

.substeps{
  margin-top:32px;
  padding:24px 0 0;
  border-top:1px solid var(--rule);
  border-left:none;
  border-right:none;
  border-bottom:none;
  background:none;
}
.substeps-title{
  font-family:var(--sans);
  font-size:10px;
  font-weight:700;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--accent);
  margin-bottom:12px;
  font-style:normal;
}
.substep{
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:12px 0;
  border-bottom:1px solid var(--rule-dotted);
  cursor:pointer;
  font-family:var(--serif);
  font-size:15px;
  color:var(--ink-2);
  line-height:1.5;
  transition:none;
}
.substep:last-of-type{border-bottom:none}
.substep:hover{background:none}
.substep input{
  width:18px;height:18px;
  margin-top:1px;
  appearance:none;-webkit-appearance:none;
  border:1.5px solid var(--ink);
  background:var(--paper);
  cursor:pointer;
  flex-shrink:0;
  position:relative;
  accent-color:var(--accent);
}
.substep input:checked{background:var(--accent);border-color:var(--accent)}
.substep input:checked::after{content:'✓';position:absolute;top:-2px;left:1px;color:#fff;font-size:13px;font-weight:700;line-height:1}
.substep input:checked + span{color:var(--muted);text-decoration:line-through;opacity:.7}

.step-done{
  display:flex;
  align-items:flex-start;
  gap:14px;
  margin-top:24px;
  padding:18px 22px;
  background:var(--paper-2);
  border:1px solid var(--ink);
  cursor:pointer;
  font-family:var(--serif);
  font-size:16px;
  color:var(--ink);
  font-weight:600;
  line-height:1.45;
  transition:background .2s;
}
.step-done:hover{background:var(--paper-3)}
.step-done input{
  width:20px;height:20px;
  appearance:none;-webkit-appearance:none;
  border:1.5px solid var(--ink);
  background:var(--paper);
  cursor:pointer;
  flex-shrink:0;
  margin-top:1px;
  position:relative;
  accent-color:var(--ok);
}
.step-done input:checked{background:var(--ok);border-color:var(--ok)}
.step-done input:checked::after{content:'✓';position:absolute;top:-2px;left:2px;color:#fff;font-size:14px;font-weight:700;line-height:1}
.step-done input:checked + span{color:var(--ok)}

.step-timer{
  margin-top:20px;
  font-family:var(--sans);
  font-size:11px;
  font-weight:600;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  font-style:normal;
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
}
.step-timer strong{color:var(--ink);font-family:var(--serif);font-style:italic;font-weight:400;font-size:15px;letter-spacing:0;text-transform:none}

.test-checks{display:flex;flex-direction:column;gap:0}
.tcheck{
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:14px 0;
  border-bottom:1px solid var(--rule-dotted);
  cursor:pointer;
  font-family:var(--serif);
  font-size:15px;
  color:var(--ink-2);
  line-height:1.5;
}
.tcheck:last-child{border-bottom:none}
.tcheck input{
  width:18px;height:18px;
  margin-top:1px;
  appearance:none;-webkit-appearance:none;
  border:1.5px solid var(--ink);
  background:var(--paper);
  cursor:pointer;
  flex-shrink:0;
  position:relative;
  accent-color:var(--ok);
}
.tcheck input:checked{background:var(--ok);border-color:var(--ok)}
.tcheck input:checked::after{content:'✓';position:absolute;top:-2px;left:1px;color:#fff;font-size:13px;font-weight:700;line-height:1}
.tcheck input:checked + span{color:var(--ok);text-decoration:line-through;opacity:.7}

/* ═══════════════════════════════════════════════════════════
   FAQ
   ═══════════════════════════════════════════════════════════ */
.faq{max-width:var(--container);margin:0 auto;padding:64px var(--gutter);border-top:1px solid var(--rule)}
.faq h2{
  font-family:var(--serif);
  font-size:48px;
  font-weight:300;
  letter-spacing:-1px;
  margin-bottom:32px;
  text-align:center;
}
.faq h2 em{font-style:italic;color:var(--accent);font-weight:400}
.faq-item{
  border-bottom:1px solid var(--rule-light);
  padding:8px 0;
}
.faq-item summary{
  cursor:pointer;
  font-family:var(--serif);
  font-size:20px;
  font-weight:400;
  color:var(--ink);
  list-style:none;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:24px;
  padding:16px 0;
  transition:color .2s;
}
.faq-item summary:hover{color:var(--accent)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:'+';
  font-family:var(--sans);
  font-size:24px;
  font-weight:300;
  color:var(--accent);
  flex-shrink:0;
  transition:transform .25s;
}
.faq-item[open] summary::after{content:'−';transform:none}
.faq-item p{
  font-family:var(--serif);
  font-size:16px;
  line-height:1.7;
  color:var(--ink-2);
  margin:0 0 16px;
  padding:0;
  max-width:840px;
}
.faq-item strong{color:var(--accent);font-weight:600}

/* ═══════════════════════════════════════════════════════════
   FINISH SCREEN
   ═══════════════════════════════════════════════════════════ */
.finish-screen{
  position:fixed;
  inset:0;
  z-index:200;
  background:var(--paper);
  display:flex;
  align-items:center;
  justify-content:center;
  opacity:0;
  pointer-events:none;
  transition:opacity .5s;
  overflow-y:auto;
  padding:60px 24px;
}
.finish-screen.visible{opacity:1;pointer-events:auto}
.finish-inner{text-align:center;max-width:760px;margin:0 auto;padding:0}
.finish-icon{
  font-size:36px;
  color:var(--ok);
  width:80px;height:80px;
  border:1px solid var(--ok);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  margin:0 auto 28px;
  font-weight:300;
  line-height:1;
}
.finish-inner h2{
  font-family:var(--serif);
  font-size:64px;
  font-weight:300;
  letter-spacing:-1px;
  margin-bottom:16px;
}
.finish-inner h2 em{color:var(--accent);font-style:italic}
.finish-inner > p{
  font-family:var(--serif);
  font-size:20px;
  font-style:italic;
  color:var(--muted);
  margin-bottom:48px;
}
.finish-tips{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:0;
  margin-bottom:48px;
  border:1px solid var(--rule);
  text-align:left;
}
.ftip{
  padding:24px 26px;
  border:none;
  border-right:1px solid var(--rule-light);
  border-bottom:1px solid var(--rule-light);
  font-family:var(--serif);
  font-size:14px;
  line-height:1.6;
  color:var(--ink-2);
}
.ftip:nth-child(2n){border-right:none}
.ftip:nth-last-child(-n+2){border-bottom:none}
.ftip strong{
  display:block;
  font-family:var(--sans);
  font-size:11px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--accent);
  margin-bottom:8px;
}
.finish-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-reset{
  background:none;
  color:var(--muted);
  border:1px solid var(--rule-light);
  padding:14px 28px;
  font-family:var(--sans);
  font-style:normal;
  font-size:11px;
  font-weight:600;
  letter-spacing:.18em;
  text-transform:uppercase;
  cursor:pointer;
  transition:all .25s;
}
.btn-reset:hover{color:var(--warn);border-color:var(--warn)}

/* Confetti приглушаем для светлой темы */
.confetti{position:absolute;inset:0;pointer-events:none;overflow:hidden;opacity:.5}
.confetti-piece{position:absolute;top:-10px;width:8px;height:8px;background:var(--accent);border-radius:0;animation:confettiFall 3s ease-out forwards}
@keyframes confettiFall{0%{transform:translateY(0) rotate(0deg);opacity:1}100%{transform:translateY(80vh) rotate(720deg);opacity:0}}

/* ═══════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════ */
.site-footer{
  margin-top:0;
  padding:48px var(--gutter) 32px;
  border-top:1px solid var(--rule);
  background:var(--paper);
  text-align:center;
}
.footer-inner{max-width:var(--container);margin:0 auto}
.footer-brand{
  font-family:var(--serif);
  font-size:18px;
  font-weight:400;
  letter-spacing:.32em;
  text-transform:uppercase;
  color:var(--ink);
  margin-bottom:10px;
}
.footer-desc{font-family:var(--serif);font-style:italic;font-size:14px;color:var(--muted);margin-bottom:8px}
.footer-credit{font-family:var(--serif);font-size:13px;color:var(--ink-2);margin-bottom:16px}
.footer-credit strong{color:var(--accent);font-weight:600}
.footer-links{margin:18px 0 0;font-family:var(--sans);font-size:11px;letter-spacing:.12em;text-transform:uppercase;font-weight:600}
.footer-links a{color:var(--ink);text-decoration:none;border-bottom:1px solid var(--ink);padding-bottom:2px;transition:all .2s}
.footer-links a:hover{color:var(--accent);border-color:var(--accent)}
.footer-note{font-family:var(--sans);font-size:10px;line-height:1.6;color:var(--muted-2);max-width:600px;margin:18px auto 0;letter-spacing:.04em;opacity:1}

/* ═══════════════════════════════════════════════════════════
   LIGHTBOX
   ═══════════════════════════════════════════════════════════ */
.lightbox{
  position:fixed;inset:0;z-index:400;
  background:rgba(10,10,10,.92);
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;
  transition:opacity .3s;
  padding:32px;
}
.lightbox.open{opacity:1;pointer-events:auto}
.lb-close{
  position:absolute;
  top:24px;right:24px;
  width:44px;height:44px;
  background:none;
  border:1px solid rgba(247,243,232,.4);
  color:var(--paper);
  font-size:24px;
  font-weight:300;
  cursor:pointer;
  transition:all .2s;
  display:flex;align-items:center;justify-content:center;
}
.lb-close:hover{border-color:var(--accent);color:var(--accent)}
.lb-img{max-width:90vw;max-height:85vh;object-fit:contain;border:1px solid rgba(247,243,232,.2)}
.instr-img img,.step-ref img{cursor:zoom-in}

.price-note{margin-top:8px;font-family:var(--sans);font-size:10px;color:var(--muted-2);font-style:normal;letter-spacing:.05em}

/* ═══════════════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════════════ */
.anim-fade{opacity:0;transform:translateY(12px);transition:opacity .8s ease,transform .8s ease;transition-delay:var(--d,0s)}
.anim-fade.go{opacity:1;transform:none;animation:none}
.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}
@keyframes slideLeft{from{opacity:0;transform:translateX(-12px)}to{opacity:1;transform:none}}
@keyframes slideRight{from{opacity:0;transform:translateX(12px)}to{opacity:1;transform:none}}
@keyframes heroFadeIn{to{opacity:1;transform:translateY(0)}}
@keyframes scrollBounce{0%,100%{opacity:.5}50%{opacity:1}}

/* Reduced motion */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;animation-iteration-count:1 !important}
  .scroll-hint{display:none}
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */
@media(max-width:880px){
  body{font-size:16px}
  :root{--gutter:20px}
  .hero{min-height:80vh}
  .hero h1{font-size:44px;letter-spacing:-1px}
  .hero-sub{font-size:17px}
  .hero-stats{flex-direction:row;flex-wrap:wrap}
  .stat{flex:1 1 28%;padding:14px 12px 14px 0;min-width:auto}
  .stat-val{font-size:24px}
  .progress-steps{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .pname{font-size:9px;letter-spacing:.08em}
  .pnum{font-size:11px;width:24px;height:24px;line-height:22px}
  .intro{padding:48px 0 40px}
  .intro h2{font-size:36px}
  .timeline{flex-wrap:wrap;justify-content:center;gap:8px 0}
  .tl-line{display:none}
  .tl-item{flex:0 0 30%;padding:8px 4px}
  .step-panel{padding:36px 0 48px}
  .step-header h2{font-size:36px}
  .size-picker,.tier-picker{grid-template-columns:1fr;border-bottom:none}
  .size-card,.tier-card{border-right:none;border-bottom:1px solid var(--rule-light)}
  .size-card{padding:24px 20px}
  .instr-block{grid-template-columns:1fr}
  .instr-img{max-width:100%}
  .instr-text h3{font-size:24px}
  .instr-text ol li{padding-left:42px;font-size:15px}
  .step-nav{flex-direction:row;gap:12px}
  .btn-back,.btn-next,.btn-finish{padding:12px 18px;font-size:11px}
  .faq{padding:48px 20px}
  .faq h2{font-size:36px}
  .faq-item summary{font-size:17px}
  .finish-tips{grid-template-columns:1fr}
  .ftip{border-right:none;border-bottom:1px solid var(--rule-light)}
  .ftip:last-child{border-bottom:none}
  .finish-inner h2{font-size:44px}
}

/* ═══════════════════════════════════════════════════════════
   PRINT
   ═══════════════════════════════════════════════════════════ */
@media print{
  body{background:#fff;color:#000;font-size:11pt}
  .hero,.progress-nav,.finish-screen,.lightbox,.scroll-hint,.cursor-glow,.particles,.btn-export,.step-nav,.shop-check,.tcheck input,.substep input,.step-done input,.loader,.skip-link,.hero-cta{display:none !important}
  .step-panel{display:block !important;page-break-after:always;padding:20px 0}
  .reveal,.anim-fade{opacity:1 !important;transform:none !important}
  .diagram-wrap,.warn-box,.tip-box,.result-box,.tools-needed,.blueprint{break-inside:avoid;background:#f5f5f5;border-color:#ccc}
  .shop-links a::after{content:' (' attr(href) ')';font-size:8pt;color:#666}
  .site-footer{border-color:#ccc}
}