/* ===== КАЛЬКУЛЯТОР НДС ===== */
.kalk-page .wrap{max-width:860px;margin:0 auto;padding:clamp(90px,12vh,140px) clamp(24px,5vw,80px) 60px;box-sizing:border-box}

:root{
  --red:#D6001C; --red-dark:#B00018; --yellow:#FFD100; --yellow-light:#FFE14D;
  --g900:#1A1A1A; --g800:#333; --g700:#4A4A4A; --g600:#666; --g500:#888;
  --g300:#CCC; --g200:#E5E5E5; --g100:#F2F2F2; --g50:#F8F8F8; --white:#fff;
  --green:#2EA04C;
  --font:'Manrope',-apple-system,BlinkMacSystemFont,sans-serif;
}
*{box-sizing:border-box}
body{margin:0;font-family:var(--font);color:var(--g900);background:var(--white);-webkit-font-smoothing:antialiased}
.wrap{max-width:920px;margin:0 auto;padding:clamp(28px,5vh,56px) clamp(16px,4vw,32px) 80px}

/* ── шапка страницы ── */
.kcrumbs{font-size:13px;color:var(--g500);margin-bottom:18px}
.kcrumbs a{color:var(--g500);text-decoration:none}
.kcrumbs a:hover{color:var(--red)}
.lead{font-size:clamp(15px,1.6vw,18px);color:var(--g600);line-height:1.55;margin:0 0 30px;max-width:640px}

/* ── вкладки ── */
.tabs{display:flex;gap:8px;background:var(--g100);padding:6px;border-radius:16px;margin-bottom:24px;flex-wrap:wrap}
.tab{flex:1 1 220px;height:52px;border:none;background:transparent;border-radius:12px;
  font-family:var(--font);font-size:15px;font-weight:700;color:var(--g600);cursor:pointer;
  transition:background .15s,color .15s}
.tab.active{background:var(--white);color:var(--g900);box-shadow:0 2px 10px rgba(0,0,0,.07)}
.tab:hover:not(.active){color:var(--g900)}

/* ── карточка калькулятора ── */
.calc{border:1px solid var(--g200);border-radius:22px;padding:clamp(20px,3.4vw,34px);background:var(--white)}
.pane{display:none}
.pane.active{display:block}

.field{margin-bottom:20px}
.field label{display:block;font-size:14px;font-weight:700;color:var(--g800);margin-bottom:9px}
.hint{font-size:13px;color:var(--g500);margin-top:7px;line-height:1.45}
.input-row{display:flex;gap:10px;flex-wrap:wrap}
input[type=number],input[type=text]{
  flex:1 1 200px;height:56px;padding:0 18px;border:2px solid var(--g200);border-radius:14px;
  font-family:var(--font);font-size:17px;font-weight:600;color:var(--g900);background:var(--white);outline:none;
  transition:border-color .15s;-moz-appearance:textfield}
input::-webkit-outer-spin-button,input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
input:focus{border-color:var(--red)}

.seg{display:flex;gap:8px;flex-wrap:wrap}
.seg button{flex:1 1 90px;height:52px;border:2px solid var(--g200);background:var(--white);border-radius:13px;
  font-family:var(--font);font-size:16px;font-weight:700;color:var(--g700);cursor:pointer;transition:all .15s}
.seg button.on{border-color:var(--g900);background:var(--g900);color:var(--white)}
.seg button:hover:not(.on){border-color:var(--g500)}

.switch{display:flex;gap:8px;background:var(--g100);padding:5px;border-radius:14px;margin-bottom:22px}
.switch button{flex:1;height:46px;border:none;background:transparent;border-radius:10px;
  font-family:var(--font);font-size:14px;font-weight:700;color:var(--g600);cursor:pointer}
.switch button.on{background:var(--white);color:var(--g900);box-shadow:0 2px 8px rgba(0,0,0,.06)}

/* ── результат ── */
.res{margin-top:26px;padding:24px;border-radius:18px;background:var(--g50);border:1px solid var(--g200)}
.res-row{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:11px 0;border-bottom:1px dashed var(--g200)}
.res-row:last-child{border:none;padding-bottom:0}
.res-row span{font-size:15px;color:var(--g600)}
.res-row b{font-size:19px;font-weight:700;white-space:nowrap}
.res-main{background:var(--yellow);border-color:var(--yellow)}
.res-main .res-row span{color:var(--g800)}
.res-main .res-row b{font-size:26px}

/* ── сравнение ставок ── */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
.rate{border:2px solid var(--g200);border-radius:18px;padding:20px 18px;text-align:center;transition:all .2s}
.rate.best{border-color:var(--green);background:#F2FBF4}
.rate .r-name{font-size:13px;font-weight:700;color:var(--g600);text-transform:uppercase;letter-spacing:.05em}
.rate .r-val{font-size:30px;font-weight:800;margin:8px 0 4px;letter-spacing:-.02em}
.rate .r-sum{font-size:15px;font-weight:600;color:var(--g700)}
.rate .r-badge{display:inline-block;margin-top:10px;padding:5px 12px;border-radius:999px;
  background:var(--green);color:#fff;font-size:12px;font-weight:700}
.verdict{margin-top:20px;padding:18px 20px;border-left:4px solid var(--yellow);background:#FFF8DC;border-radius:0 14px 14px 0;
  font-size:15px;line-height:1.55}
.verdict b{font-weight:800}

/* ── низ ── */
.note{margin-top:14px;font-size:13px;color:var(--g500);line-height:1.5}
.cta{margin-top:34px;padding:26px;border-radius:20px;background:var(--g900);color:#fff;
  display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.cta p{margin:0;font-size:16px;line-height:1.5;flex:1 1 300px}
.cta a{flex:0 0 auto;height:52px;padding:0 28px;border-radius:14px;background:var(--red);color:#fff;
  font-size:15px;font-weight:700;text-decoration:none;display:inline-flex;align-items:center}
.cta a:hover{background:var(--red-dark)}

h2{font-size:clamp(20px,2.6vw,28px);font-weight:800;letter-spacing:-.02em;margin:44px 0 14px}
.acc{border-top:1px solid var(--g200)}
.acc details{border-bottom:1px solid var(--g200)}
.acc summary{padding:18px 0;font-size:16px;font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px}
.acc summary::-webkit-details-marker{display:none}
.acc summary::after{content:'+';font-size:22px;font-weight:400;color:var(--g500)}
.acc details[open] summary::after{content:'–'}
.acc p{margin:0 0 18px;font-size:15px;line-height:1.6;color:var(--g700)}
.acc a{color:var(--red);text-decoration:none;border-bottom:1px solid rgba(214,0,28,.3)}
.acc a:hover{border-color:var(--red)}
.acc a{color:var(--red);text-decoration:none;border-bottom:1px solid rgba(214,0,28,.3)}
.acc a:hover{border-color:var(--red)}

@media(max-width:600px){
  .grid3{grid-template-columns:1fr}
  .tab{flex:1 1 100%}
  .cta a{width:100%;justify-content:center}
}

/* ── мобильная версия ── */
@media(max-width:700px){
  .wrap{padding:20px 16px 60px}
    .lead{font-size:15px;margin-bottom:22px}
  .tabs{padding:5px;gap:5px;border-radius:14px;flex-wrap:nowrap}
  .tab{flex:1 1 50%;min-width:0;height:52px;font-size:13px;line-height:1.2;padding:0 6px;white-space:normal}
  .calc{padding:18px 16px;border-radius:18px}
  .switch{padding:4px;gap:5px}
  .switch button{height:44px;font-size:13px}
  input[type=number],input[type=text]{height:54px;font-size:16px;padding:0 15px}
  .seg{gap:6px}
  .seg button{flex:1 1 calc(33.33% - 4px);height:48px;font-size:15px}
  .res{padding:18px 16px;border-radius:15px}
  .res-row{flex-direction:column;align-items:flex-start;gap:2px;padding:9px 0}
  .res-row b{font-size:20px}
  .res-main .res-row b{font-size:26px}
  .grid3{grid-template-columns:1fr;gap:10px}
  .rate{display:grid;grid-template-columns:1fr auto;align-items:center;gap:4px 12px;text-align:left;padding:15px 16px}
  .rate .r-name{grid-column:1;font-size:12px;margin:0}
  .rate .r-val{grid-column:1;grid-row:2;font-size:23px;margin:0;white-space:nowrap}
  .rate .r-sum{grid-column:1;grid-row:3;font-size:12.5px;color:var(--g500)}
  .rate .r-badge{grid-column:2;grid-row:1/4;margin:0;align-self:center;font-size:11px;padding:5px 11px;white-space:nowrap}
  .verdict{padding:16px;font-size:14px}
  .cta{padding:20px;border-radius:16px;gap:14px}
  .cta p{font-size:15px}
  .cta a{width:100%;justify-content:center;height:52px}
  h2{font-size:22px;margin:34px 0 10px}
  .acc summary{font-size:15px;padding:16px 0}
  .acc p{font-size:14px}
  .hint,.note{font-size:12.5px}
}
@media(max-width:380px){
  .seg button{flex:1 1 calc(50% - 3px)}
  .rate .r-name{flex:0 0 80px}
  .rate .r-val{font-size:21px}
}

/* доп. блоки */
.tools{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.tools button{height:46px;padding:0 18px;border:1.5px solid var(--g200);background:var(--white);border-radius:12px;
  font-family:var(--font);font-size:14px;font-weight:700;color:var(--g700);cursor:pointer;
  display:inline-flex;align-items:center;gap:8px;transition:all .15s}
.tools button:hover{border-color:var(--g900);color:var(--g900)}
.tools button.done{border-color:var(--green);color:var(--green)}
.tools svg{width:16px;height:16px;flex:0 0 auto}

.how{margin-top:22px;border:1px solid var(--g200);border-radius:16px;overflow:hidden}
.how summary{padding:16px 20px;font-size:15px;font-weight:700;cursor:pointer;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:12px;background:var(--g50)}
.how summary::-webkit-details-marker{display:none}
.how summary::after{content:'+';font-size:20px;font-weight:400;color:var(--g500)}
.how[open] summary::after{content:'–'}
.how-body{padding:20px;font-size:15px;line-height:1.6;color:var(--g700)}
.how-body code{background:var(--g100);padding:3px 8px;border-radius:6px;font-size:14px;font-family:ui-monospace,monospace;color:var(--g900)}
.how-body p{margin:0 0 14px}
.how-body p:last-child{margin:0}
.how-body a{color:var(--red);text-decoration:none;border-bottom:1px solid rgba(214,0,28,.3)}

.knx{margin-top:34px}
.knx h2{margin:0 0 16px}
.knx-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.knx-card{display:flex;flex-direction:column;border:1px solid var(--g200);border-radius:18px;text-decoration:none;
  color:var(--g900);overflow:hidden;transition:border-color .15s,transform .15s,box-shadow .15s}
.knx-card:hover{border-color:var(--g900);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.07)}
.n-thumb{position:relative;aspect-ratio:16/9;background:var(--g100);overflow:hidden}
.n-thumb img,.n-thumb video{width:100%;height:100%;object-fit:cover;display:block}
.n-video .n-play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:46px;height:46px;border-radius:50%;background:var(--red);display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 14px rgba(0,0,0,.25)}
.n-video .n-play svg{width:20px;height:20px;color:#fff;margin-left:2px}
.n-dur{position:absolute;right:9px;bottom:9px;background:rgba(0,0,0,.72);color:#fff;
  font-size:12px;font-weight:700;padding:3px 8px;border-radius:7px}
.n-calc{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--yellow),#FFB800)}
.n-calc svg{width:56px;height:56px;color:var(--g900)}
.n-body{padding:16px 18px 18px}
.knx-card .n-tag{font-size:12px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;color:var(--red);display:block;margin-bottom:7px}
.knx-card b{display:block;font-size:16px;font-weight:700;line-height:1.3;margin-bottom:6px}
.knx-card .n-desc{font-size:14px;color:var(--g600);line-height:1.5}
@media(max-width:700px){
  .knx-grid{grid-template-columns:1fr}
  .tools{gap:8px}
  .tools button{flex:1 1 100%;justify-content:center;height:48px}
}
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(20px);opacity:0;
  background:var(--g900);color:#fff;padding:13px 22px;border-radius:12px;font-size:14px;font-weight:600;
  pointer-events:none;transition:all .25s;z-index:99}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}