:root{
  --red-600:#e2142d;
  --red-500:#ff2d47;
  --red-400:#ff6b7a;
  --gray-950:#0b0c0f;
  --gray-900:#14161a;
  --gray-800:#1d2025;
  --gray-700:#2a2e35;
  --gray-500:#6b7280;
  --gray-300:#c7cad1;
  --gray-100:#c7cbd1;
  --white:#ffffff;
  --radius:18px;
  --container:1760px;
  --ease:cubic-bezier(.16,1,.3,1);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;overflow-x:hidden;}
body{
  margin:0;
  font-family:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  background:var(--gray-100);
  color:var(--gray-900);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- NAV ---------- */
.nav{
  position:sticky;top:0;z-index:100;
  background:var(--red-600);
  border-bottom:1px solid rgba(255,255,255,.15);
}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px;}
.logo{font-size:24px;font-weight:800;letter-spacing:-.02em;color:var(--white);}
.logo__dot{color:var(--white);}
.nav .logo{color:#111;}
.nav .logo__dot{color:var(--white);}
.nav__links{display:flex;gap:28px;flex:1;justify-content:center;}
.nav__links a{color:var(--white);font-size:19px;font-weight:600;transition:opacity .2s var(--ease);}
.nav__links a:hover{opacity:.75;}
.nav .btn--primary{background:var(--gray-300);color:#111;box-shadow:none;}
.nav .btn--primary:hover{background:var(--gray-300);transform:none;box-shadow:none;}

/* ---------- BUTTONS ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;border-radius:100px;border:none;cursor:pointer;
  padding:14px 26px;font-size:15px;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.btn--sm{padding:10px 20px;font-size:14px;}
.btn--lg{padding:18px 34px;font-size:17px;}
.btn--block{width:100%;}
.btn--primary{background:linear-gradient(135deg,var(--red-500),var(--red-600));color:var(--white);box-shadow:0 10px 30px -8px rgba(226,20,45,.55);}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px -8px rgba(226,20,45,.65);}
.btn--ghost{background:rgba(255,255,255,.06);color:var(--white);border:1px solid rgba(255,255,255,.18);}
.btn--ghost:hover{background:rgba(255,255,255,.12);}
.btn--ghost-dark{background:none;color:var(--gray-700);border:1px solid var(--gray-300);}
.btn--ghost-dark:hover{background:var(--gray-100);}

/* ---------- HERO ---------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--gray-950);
  padding:160px 0 100px;
}
.hero__bg{
  position:absolute;inset:0;
  background:
    radial-gradient(60% 50% at 80% 0%, rgba(226,20,45,.35), transparent 60%),
    radial-gradient(40% 40% at 10% 90%, rgba(226,20,45,.18), transparent 60%),
    repeating-linear-gradient(90deg, rgba(255,255,255,.035) 0 1px, transparent 1px 72px);
  pointer-events:none;
}
.hero__inner{position:relative;z-index:1;}
.hero .container{padding-left:12px;}
.eyebrow{
  color:#b8101f;text-transform:uppercase;letter-spacing:.18em;
  font-size:34px;font-weight:700;margin:0 0 20px;
}
.eyebrow--light{color:rgba(255,255,255,.85);}
.hero .eyebrow,.section--dark .eyebrow{color:var(--red-500);}
.hero__title{
  color:var(--white);
  font-size:clamp(42px,6.5vw,88px);
  line-height:1.03;
  font-weight:800;
  letter-spacing:-.02em;
  margin:0 0 24px;
}
.hero__title .accent{color:var(--red-500);}
.hero__title--oneline{font-size:clamp(28px,4.6vw,64px);white-space:nowrap;}
.hero__lead{
  color:var(--gray-300);
  font-size:clamp(17px,1.6vw,20px);
  max-width:560px;
  margin:0 0 40px;
}
.hero__actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:72px;}
.hero__stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;border-top:1px solid rgba(255,255,255,.1);padding-top:36px;}
.stat{display:flex;flex-direction:column;gap:6px;}
.stat__num{color:var(--white);font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.01em;}
.stat__label{color:var(--gray-500);font-size:14px;}

/* ---------- SECTIONS ---------- */
.section{padding:120px 0;}
#catalog{padding-top:60px;padding-bottom:60px;}
#portfolio{padding-top:60px;}
.section--dark{background:var(--gray-950);color:var(--white);}
.section--dark .section__title{color:var(--white);}
.section--accent{background:linear-gradient(135deg,var(--red-600),#9c0f22);color:var(--white);}
.section__title{
  font-size:clamp(30px,4vw,48px);
  font-weight:800;letter-spacing:-.02em;
  margin:0 0 28px;max-width:780px;line-height:1.1;
}
#calculator .section__title{margin-bottom:56px;}
.section__title--light{color:var(--white);}
.section__title--big{font-size:clamp(36px,5.5vw,58px);}
.section__title--full{max-width:none;white-space:nowrap;}
@media (max-width:980px){
  .section__title--full{white-space:normal;}
}

/* ---------- CATALOG: FILTERS + GALLERY ---------- */
.catalog-layout{display:grid;grid-template-columns:1fr 220px;gap:40px;align-items:start;}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:36px;}
.filter{
  padding:10px 18px;border-radius:100px;border:1px solid var(--gray-300);
  background:var(--white);font-weight:600;font-size:14px;cursor:pointer;
  color:var(--gray-700);transition:all .2s var(--ease);
  -webkit-tap-highlight-color:transparent;user-select:none;
}
.filter.is-active{background:var(--gray-900);color:var(--white);border-color:var(--gray-900);}
@media (hover:hover){
  .filter:not(.is-active):hover{border-color:var(--red-500);color:var(--red-600);}
}

.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px;}
.card{
  border-radius:var(--radius);overflow:hidden;background:var(--white);
  box-shadow:0 1px 2px rgba(0,0,0,.05);transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.card:hover{transform:translateY(-6px);box-shadow:0 24px 40px -16px rgba(0,0,0,.18);}
.card__media{height:160px;position:relative;overflow:hidden;}
.card__media img{width:100%;height:100%;object-fit:cover;display:block;}

.catalog-colors{
  background:var(--white);border-radius:20px;padding:26px 24px;
  box-shadow:0 10px 30px -12px rgba(0,0,0,.12);position:sticky;top:100px;
  border-top:3px solid var(--red-500);
}
.catalog-colors__label{font-size:13px;font-weight:700;color:var(--gray-900);margin:0 0 16px;text-transform:uppercase;letter-spacing:.07em;}
.catalog-colors ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px;}
.catalog-colors li{
  display:flex;align-items:center;gap:12px;font-size:14.5px;color:var(--gray-700);font-weight:500;
  padding:9px 8px;border-radius:10px;transition:background .2s var(--ease);
}
.catalog-colors .swatch{
  width:22px;height:22px;border-radius:50%;flex-shrink:0;
  box-shadow:0 0 0 1px rgba(0,0,0,.08),inset 0 1px 2px rgba(255,255,255,.4),inset 0 -1px 2px rgba(0,0,0,.15);
}
.catalog-colors .swatch--light{box-shadow:0 0 0 1px rgba(0,0,0,.15),inset 0 -1px 2px rgba(0,0,0,.08);}
@media (max-width:980px){
  .catalog-layout{grid-template-columns:minmax(0,1fr);}
  .catalog-colors{position:static;}
}

/* ---------- PORTFOLIO ---------- */
.portfolio{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px;}
.portfolio-card{border-radius:var(--radius);overflow:hidden;background:var(--white);box-shadow:0 1px 2px rgba(0,0,0,.05);}
.portfolio-card__room{position:relative;aspect-ratio:4/3;overflow:hidden;}
.portfolio-card__room img{width:100%;height:100%;object-fit:cover;display:block;}

/* ---------- CALCULATOR ---------- */
.calc{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:start;}
.calc__form{display:flex;flex-direction:column;gap:24px;}
.field{display:flex;flex-direction:column;gap:10px;}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.field label{font-size:14px;font-weight:600;color:var(--gray-300);}
.field input, .field textarea{
  background:var(--gray-800);border:1px solid var(--gray-700);color:var(--white);
  border-radius:12px;padding:14px 16px;font-size:16px;font-family:inherit;outline:none;
  transition:border-color .2s var(--ease);
}
.field input:focus, .field textarea:focus{border-color:var(--red-500);}
.segmented{display:flex;gap:10px;flex-wrap:wrap;}
.segmented__btn{
  padding:12px 18px;border-radius:12px;border:1px solid var(--gray-700);
  background:var(--gray-800);color:var(--gray-300);font-weight:600;font-size:14px;cursor:pointer;
  transition:all .2s var(--ease);
  -webkit-tap-highlight-color:transparent;user-select:none;
}
.segmented__btn.is-active{background:var(--red-500);border-color:var(--red-500);color:var(--white);}
@media (hover:hover){
  .segmented__btn:not(.is-active):hover{border-color:var(--red-400);color:var(--white);}
}

.calc__result{
  background:var(--gray-900);border:1px solid var(--gray-700);border-radius:24px;padding:36px;
  position:sticky;top:100px;
}
.calc__result-label{color:var(--gray-500);font-size:14px;font-weight:600;margin:0 0 8px;}
.calc__result-sum{color:var(--white);font-size:clamp(36px,5vw,52px);font-weight:800;margin:0 0 20px;}
.calc__breakdown{list-style:none;margin:0 0 20px;padding:0;display:flex;flex-direction:column;gap:10px;}
.calc__breakdown li{display:flex;justify-content:space-between;color:var(--gray-300);font-size:14px;border-bottom:1px dashed var(--gray-700);padding-bottom:8px;}
.calc__breakdown li span:last-child{color:var(--white);font-weight:600;}
.calc__disclaimer{color:var(--gray-500);font-size:12.5px;margin:0 0 20px;}

/* ---------- PROCESS ---------- */
.steps{list-style:none;margin:0;padding:0;counter-reset:none;display:grid;grid-template-columns:repeat(5,1fr);gap:20px;}
.step{background:var(--white);border-radius:var(--radius);padding:28px 22px;text-align:center;display:flex;flex-direction:column;align-items:center;}
.step__num{color:var(--red-500);font-weight:800;font-size:28px;}
.step h3{margin:14px 0 8px;font-size:18px;}
.step p{margin:0;color:#4b505a;font-size:15.5px;line-height:1.55;}

/* ---------- REVIEWS ---------- */
.reviews__head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:40px;}
.reviews__head .section__title{margin-bottom:0;}

.reviews-top{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:start;margin-bottom:90px;}

.review-form{
  background:var(--gray-900);border:1px solid var(--gray-700);border-radius:24px;padding:32px;
  display:flex;flex-direction:column;gap:20px;
}
.stars-input{display:flex;gap:6px;}
.star-btn{
  background:none;border:none;cursor:pointer;font-size:28px;line-height:1;
  color:var(--gray-700);padding:0;-webkit-tap-highlight-color:transparent;
}
.star-btn.is-active{color:var(--red-500);}

.rating-panel{background:var(--gray-900);border:1px solid var(--gray-700);border-radius:24px;padding:32px;}
.rating-panel__label{font-size:13px;font-weight:700;color:var(--gray-300);text-transform:uppercase;letter-spacing:.07em;margin:0 0 20px;}
.rating-panel__list{list-style:none;margin:0 0 28px;padding:0;display:flex;flex-direction:column;gap:14px;}
.rating-panel__list li{display:grid;grid-template-columns:150px 1fr 34px;align-items:center;gap:12px;}
.rating-panel__list li span{font-size:13.5px;color:var(--gray-300);}
.rating-panel__list li b{font-size:13.5px;color:var(--white);text-align:right;}
.rating-panel__bar{height:6px;border-radius:100px;background:var(--gray-700);overflow:hidden;}
.rating-panel__bar span{display:block;height:100%;background:linear-gradient(90deg,var(--red-500),var(--red-400));border-radius:100px;}
.rating-panel__overall{border-top:1px solid var(--gray-700);padding-top:24px;text-align:center;}
.rating-panel__overall-label{font-size:13px;color:var(--gray-500);margin:0 0 6px;}
.rating-panel__score{font-size:40px;font-weight:800;color:var(--white);margin:0 0 10px;}
.rating-panel__score span{font-size:18px;color:var(--gray-500);font-weight:600;}
.star-rating{position:relative;display:inline-block;font-size:24px;letter-spacing:3px;line-height:1;}
.star-rating__bg{color:var(--gray-700);}
.star-rating__fg{position:absolute;top:0;left:0;overflow:hidden;white-space:nowrap;color:var(--red-500);}

.reviews-drums{display:flex;flex-direction:column;gap:22px;max-width:100%;}
.drum-row{overflow:hidden;width:100%;mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);}
.drum-track{display:flex;gap:20px;width:max-content;animation:drum-scroll linear infinite;}
.drum-track:hover{animation-play-state:paused;}
.drum-row--0 .drum-track{animation-duration:62s;}
.drum-row--1 .drum-track{animation-duration:74s;animation-direction:reverse;}
.drum-row--2 .drum-track{animation-duration:54s;}
@keyframes drum-scroll{from{transform:translateX(0);}to{transform:translateX(-50%);}}
.drum-card{
  flex:0 0 280px;width:280px;
  background:var(--gray-900);border:1px solid var(--gray-700);border-radius:var(--radius);padding:24px;
}
.review__stars{color:var(--red-500);letter-spacing:2px;margin-bottom:14px;}
.review__text{color:var(--gray-300);font-size:15px;line-height:1.6;margin:0 0 18px;}
.review__author{font-weight:700;color:var(--white);font-size:14px;}
.review__meta{color:var(--gray-500);font-size:13px;}
@media (max-width:980px){
  .reviews-top{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:560px){
  .drum-card{flex:0 0 240px;width:240px;}
}

/* ---------- FAQ: тёмный технологичный список ---------- */
.faq-sky{position:relative;overflow:hidden;}
.faq-sky__stars{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(1.6px 1.6px at 20px 30px, #fff, transparent),
    radial-gradient(1.2px 1.2px at 75px 10px, #fff, transparent),
    radial-gradient(1.6px 1.6px at 130px 80px, #fff, transparent),
    radial-gradient(1.2px 1.2px at 40px 95px, #fff, transparent),
    radial-gradient(1.4px 1.4px at 100px 45px, #fff, transparent),
    radial-gradient(1.2px 1.2px at 150px 20px, #fff, transparent);
  background-size:170px 170px;
  background-repeat:repeat;
  opacity:.4;
}

.faq-dice{display:flex;flex-direction:column;gap:1px;max-width:860px;margin:0 auto;background:var(--gray-700);border:1px solid var(--gray-700);border-radius:18px;overflow:hidden;}
.faq-item{background:var(--gray-900);}
.faq-item__q{
  width:100%;display:flex;align-items:center;gap:24px;cursor:pointer;
  background:none;border:none;text-align:left;padding:24px 28px;
  transition:background .2s var(--ease);
}
@media (hover:hover){
  .faq-item__q:hover{background:var(--gray-800);}
}
.faq-item__index{font-family:"Courier New",monospace;font-weight:700;font-size:13px;letter-spacing:.08em;color:var(--red-500);flex-shrink:0;}
.faq-item__question{flex:1;color:var(--white);font-weight:700;font-size:16.5px;}
.faq-item__icon{flex-shrink:0;font-size:20px;line-height:1;color:var(--red-500);font-weight:400;transition:transform .25s var(--ease);}
.faq-item.is-open .faq-item__icon{transform:rotate(45deg);}
.faq-item__a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-item__a p{color:var(--gray-300);margin:0;line-height:1.6;font-size:15px;padding:0 28px 24px 76px;}
@media (max-width:560px){
  .faq-item__question{font-size:15px;}
  .faq-item__a p{padding-left:28px;}
}

/* ---------- ORDER ---------- */
.order{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
.order__lead{color:rgba(255,255,255,.85);font-size:16px;max-width:420px;}
.order__form{background:var(--gray-900);border:1px solid rgba(255,255,255,.08);border-radius:24px;padding:36px;display:flex;flex-direction:column;gap:20px;}
.order__form .field label{color:var(--red-500);font-weight:700;}
.order__form .field input, .order__form .field textarea{background:var(--gray-100);border-color:var(--gray-100);color:#141414;}
.order__form .field input::placeholder, .order__form .field textarea::placeholder{color:#6a6d74;}
.order__status{min-height:20px;font-size:14px;margin:0;}
.order__status.ok{color:#baffc9;}
.order__status.err{color:#ffd3d3;}

/* ---------- FOOTER ---------- */
.footer{background:var(--gray-950);color:var(--gray-300);padding:72px 0 28px;}
.footer__inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08);}
.logo--footer{display:inline-block;margin-bottom:14px;}
.footer__desc{color:var(--gray-500);max-width:320px;line-height:1.6;}
.footer__col h4{color:var(--white);font-size:15px;margin:0 0 16px;}
.footer__col p{margin:0 0 10px;}
.footer__col a:hover{color:var(--white);}
.footer__bottom{padding-top:24px;color:var(--gray-500);font-size:13px;}

/* ---------- FAB ---------- */
.fab{
  position:fixed;right:24px;bottom:24px;z-index:200;
  width:60px;height:60px;border-radius:50%;
  background:linear-gradient(135deg,var(--red-500),var(--red-600));
  color:var(--white);display:flex;align-items:center;justify-content:center;
  font-size:26px;box-shadow:0 14px 30px -8px rgba(226,20,45,.6);
  transition:transform .2s var(--ease);
}
.fab:hover{transform:scale(1.08);}

/* ---------- SCROLL REVEAL ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- RESPONSIVE ---------- */
@media (max-width:980px){
  .nav__links{display:none;}
  .hero__stats{grid-template-columns:repeat(2,1fr);}
  .calc{grid-template-columns:minmax(0,1fr);}
  .calc__result{position:static;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .order{grid-template-columns:minmax(0,1fr);}
  .footer__inner{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:560px){
  .container{padding:0 14px;}
  .steps{grid-template-columns:minmax(0,1fr);}
  .field-row{grid-template-columns:minmax(0,1fr);}
  .hero{padding:120px 0 70px;}
  .hero__title--oneline{white-space:normal;font-size:clamp(28px,8vw,40px);}
  .hero .eyebrow{font-size:13px;letter-spacing:.06em;white-space:nowrap;}
  .gallery{grid-template-columns:minmax(0,1fr);}
  .reviews{grid-template-columns:minmax(0,1fr);}
  .portfolio{grid-template-columns:minmax(0,1fr);}
  .catalog-layout{gap:24px;}
  #toOrderBtn{font-size:12px;padding:16px 4px;}
}