.wrapper {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px 8px;
    position: relative;
}
.calc-header {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: #184076;
    font-weight: 700;
    border-bottom: 2.5px solid #1F5399;
    padding-bottom: 10px;
    letter-spacing: 1px;
}

.slider-container {
    position: relative;
    margin-bottom: 40px;
}

.calc-chooser {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    scroll-behavior: smooth;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding: 10px 0;
}

.chooser-card {
    flex: 0 0 calc(25% - 15px);
    background: #fff;
    border-radius: 13px;
    box-shadow: 0 2px 14px rgba(20,60,100,0.09);
    text-align: left;
    cursor: pointer;
    border: 3px solid transparent;
    transition: border 0.18s, box-shadow 0.12s;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 230px;
    scroll-snap-align: start;
}
.chooser-card.active {
    border-color: #EF713B;
}

.chooser-img {
    width: 100%;
    height: 140px;
    object-fit: contain;
    background-color: #f8f9fb;
    border-bottom: 1px solid #eef2f7;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    box-sizing: border-box;
}
.chooser-img img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.chooser-content {
    padding: 14px 16px 18px 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.chooser-title {
    font-size: 1rem;
    line-height: 1.25rem;
    color: #184076;
    font-weight: 600;
    min-height: 2.5em;
    display: flex;
    align-items: flex-start;
}
.chooser-btn {
    padding: 10px 0;
    background: #1F5399;
    color: #fff;
    font-weight: 700;
    border: none;
    border-radius: 5px;
    font-size: 0.95rem;
    width: 100%;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(25,63,120,0.10);
    transition: background 0.12s;
}
.chooser-btn:hover {
    background: #184076;
}

.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.95);
    border: none;
    border-radius: 50%;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
    width: 42px;
    height: 42px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s;
    z-index: 2;
}
.slider-arrow:hover {
    background: #1F5399;
    color: #fff;
}
.slider-arrow.left {
    left: -20px;
}
.slider-arrow.right {
    right: -20px;
}
.calculator-container {
    max-width:570px;
    margin:0 auto;
    margin-bottom: 32px;
    background:#fff;
    border-radius:10px;
    box-shadow:0 2px 11px rgba(25,63,120,0.11);
    border-top:5px solid #1F5399;
    padding:32px 20px 32px 20px;
}
label {display:block;margin-bottom:9px;font-weight:600;color:#1F5399;}
.calculator-container select {
    width:100%;
    padding:11px 13px;
    margin-bottom:21px;
    border:1px solid #ccd5e0;
    border-radius:5px;
    font-size:1rem;
    color:#333;background:#f7f8fa;box-sizing:border-box;
}
.calculator-container input[type="number"] {
    width:100%;
    padding:11px 13px;
    margin-bottom:21px;
    border:1px solid #ccd5e0;
    border-radius:5px;
    font-size:1rem;
    color:#333;background:#f7f8fa;box-sizing:border-box;
}
.calculator-container input[type="text"] {
    width:100%;
    padding:11px 13px;
    margin-bottom:21px;
    border:1px solid #ccd5e0;
    border-radius:5px;
    font-size:1rem;
    color:#333;background:#f7f8fa;box-sizing:border-box;
}
button[type="submit"]:hover {background-color:#184076;}
.result {
    margin-top:25px;
    background-color:#e9f0fd;
    border-left:4px solid #1F5399;
    border-radius:5px;
    padding:18px 20px;
    font-size:16px;
    color:#184076;
    font-weight:600;
}
button[type="submit"] {
    background-color:#EF713B;
    color:#fff;
    border:none;
    padding:15px;
    font-size:1rem;
    width:100%;
    border-radius:5px;
    cursor:pointer;
    font-weight:700;
    box-shadow:0 2px 6px rgba(239,113,59,0.12);
    transition:background 0.15s;
}
.note {font-size:14px;color:#5a5a5a;margin-bottom:20px;}

@media (max-width: 1100px) {
    .chooser-card { flex: 0 0 calc(33.333% - 14px); }
}
@media (max-width: 820px) {
    .chooser-card { flex: 0 0 calc(50% - 10px); }
    .slider-arrow.left { left: 0; }
    .slider-arrow.right { right: 0; }
}
@media (max-width: 500px) {
    .calculator-container {padding: 18px 4px;}
    .slider-arrow { display: none; }
}