* {
    box-sizing: border-box;
}

:root {
    --blue: #0875d1;
    --blue-dark: #0759a8;
    --cyan: #08b9e8;
    --blue-light: #edf8ff;
    --navy: #09294c;
    --text: #13233b;
    --muted: #64748b;
    --border: #dbe4ef;
    --bg: #f7faff;
    --white: #ffffff;
}

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--text);
    background: var(--bg);
}

a { color: inherit; }

.site-header {
    background: #fff;
    border-bottom: 1px solid #e5edf5;
}

.header-inner {
    max-width: 1400px;
    margin: auto;
    min-height: 76px;
    padding: 7px 28px;
    display: flex;
    align-items: center;
    gap: 24px;
}

.brand {
    display: block;
    width: 245px;
    flex: 0 0 245px;
    text-decoration: none;
}

.brand img {
    display: block;
    width: 100%;
    height: 58px;
    object-fit: contain;
    object-position: left center;
}

.main-nav {
    flex: 1;
    display: flex;
    justify-content: center;
    gap: 22px;
}

.main-nav a {
    font-size: 14px;
    text-decoration: none;
    white-space: nowrap;
}

.main-nav a:hover { color: var(--blue); }

.whatsapp {
    background: var(--blue);
    color: white;
    padding: 12px 18px;
    border-radius: 9px;
    text-decoration: none;
    font-weight: 700;
    white-space: nowrap;
}

.hero {
    max-width: 1400px;
    margin: 0 auto;
    min-height: 390px;
    display: grid;
    grid-template-columns: 46% 54%;
    align-items: stretch;
    overflow: hidden;
    background: #fff;
}

.hero-copy {
    padding: 58px 20px 42px 70px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.eyebrow {
    color: var(--blue);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 1.3px;
}

.hero h1 {
    margin: 10px 0;
    font-size: clamp(40px, 4.4vw, 64px);
    line-height: .98;
    letter-spacing: -2px;
}

.hero h1 span { color: var(--blue); }

.hero p {
    max-width: 600px;
    color: #405776;
    font-size: 18px;
    line-height: 1.5;
}

.hero-image {
    overflow: hidden;
    min-height: 390px;
}

.hero-image img {
    width: 100%;
    height: 100%;
    min-height: 390px;
    object-fit: cover;
    object-position: center;
    display: block;
}

.benefits {
    display: flex;
    gap: 28px;
    margin-top: 18px;
}

.benefits div {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #304969;
    font-size: 14px;
}

.benefits b {
    font-size: 26px;
    color: var(--blue);
}

.calculator {
    max-width: 1400px;
    margin: -1px auto 0;
    padding: 0 40px 26px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.step-card {
    background: rgba(255,255,255,.97);
    border: 1px solid #e4eaf2;
    border-radius: 14px;
    padding: 22px;
    box-shadow: 0 5px 20px rgba(24, 57, 94, .04);
}

.step-title {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    min-height: 76px;
}

.step-title > span {
    flex: 0 0 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--blue);
    color: #fff;
    display: grid;
    place-items: center;
    font-size: 17px;
    font-weight: 800;
}

.step-title h2 { margin: 0 0 4px; font-size: 18px; }

.step-title p {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.4;
}

.step-card label {
    display: block;
    margin: 12px 0 6px;
    font-size: 13px;
    font-weight: 700;
}

select {
    width: 100%;
    height: 46px;
    padding: 0 13px;
    border: 1px solid #d0dae7;
    border-radius: 8px;
    background: white;
    color: var(--text);
    font-size: 15px;
}

select:focus {
    outline: 2px solid #9edcff;
    border-color: var(--blue);
}

.options-card {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 25px;
    padding: 16px 22px;
    background: #fff;
    border: 1px solid #dce6f2;
    border-radius: 14px;
}

.options-card strong {
    display: block;
    font-size: 16px;
}

.options-card p {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 13px;
}

.options-card select {
    max-width: 300px;
}

.actions {
    grid-column: 1 / -1;
    display: flex;
    justify-content: center;
    gap: 10px;
}

.btn {
    min-height: 48px;
    padding: 12px 22px;
    border-radius: 8px;
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-weight: 700;
    cursor: pointer;
    font-size: 15px;
}

.primary {
    background: linear-gradient(90deg, var(--blue), #087fe9);
    color: #fff;
}

.primary:hover { background: var(--blue-dark); }

.secondary {
    background: #fff;
    border-color: #ccd7e5;
    color: var(--text);
}

.results {
    max-width: 1400px;
    margin: 0 auto 24px;
    padding: 18px 40px;
    display: grid;
    grid-template-columns: 1.1fr 1.5fr .95fr;
    gap: 12px;
}

.result-summary, .component-list, .cta {
    background: #fff;
    border: 1px solid #dce6f2;
    border-radius: 14px;
    padding: 24px;
}

.result-summary {
    background: linear-gradient(135deg, #edf8ff, #fff);
}

.power-value {
    margin-top: 8px;
    color: #0a5cae;
    font-size: 50px;
    font-weight: 800;
    line-height: 1;
}

.result-summary h2 {
    color: #124f92;
    font-size: 22px;
    margin: 9px 0;
}

.result-summary p, .cta p, .seo-content p {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.5;
}

.warning {
    margin-top: 15px;
    padding: 12px;
    border-radius: 9px;
    background: #fff8e6;
    border: 1px solid #f0d58a;
    color: #6d5515;
    font-size: 12px;
    line-height: 1.5;
}

.component-list h3 { margin: 0 0 12px; }

.component {
    margin: 13px 0;
}

.component-header {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    font-size: 13px;
    margin-bottom: 6px;
}

.bar {
    height: 8px;
    background: #e4ebf3;
    border-radius: 99px;
    overflow: hidden;
}

.bar span {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--blue), var(--cyan));
    border-radius: 99px;
}

.meter {
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
}

.meter-label {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    margin-bottom: 7px;
}

.meter-track {
    height: 13px;
    background: #e4ebf3;
    border-radius: 99px;
    overflow: hidden;
}

.meter-track span {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--blue), var(--cyan));
}

.meter small {
    display: block;
    margin-top: 8px;
    color: var(--muted);
}

.cta-icon {
    width: 45px;
    height: 45px;
    display: grid;
    place-items: center;
    background: #eaf7ff;
    border-radius: 10px;
    font-size: 22px;
}

.cta h3 { font-size: 18px; line-height: 1.25; }

.full { width: 100%; }

.cta-features {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 15px;
    color: #49617d;
    font-size: 11px;
}

.seo-content {
    max-width: 1100px;
    margin: 25px auto 45px;
    padding: 0 24px;
    text-align: center;
}

.seo-content h2 { font-size: 25px; }

.site-footer {
    padding: 22px;
    background: #fff;
    border-top: 1px solid #e4eaf2;
    text-align: center;
}

.site-footer img {
    width: 210px;
    height: 72px;
    object-fit: contain;
}

.hidden { display: none; }

@media (max-width: 1050px) {
    .main-nav { display: none; }
    .hero { grid-template-columns: 1fr; }
    .hero-copy { padding: 42px 30px; }
    .hero-image, .hero-image img { min-height: 300px; }
    .calculator, .results { grid-template-columns: 1fr; }
}

@media (max-width: 650px) {
    .header-inner { padding: 8px 14px; }
    .brand { width: 190px; flex-basis: 190px; }
    .brand img { height: 52px; }
    .whatsapp { padding: 10px 12px; font-size: 12px; }
    .hero-copy { padding: 34px 20px; }
    .hero h1 { font-size: 43px; }
    .hero p { font-size: 16px; }
    .benefits { flex-direction: column; gap: 12px; }
    .calculator, .results { padding-left: 14px; padding-right: 14px; }
    .step-card, .result-summary, .component-list, .cta { padding: 18px; }
    .options-card { flex-direction: column; align-items: stretch; }
    .options-card select { max-width: none; }
    .actions { flex-direction: column; }
    .actions .btn { width: 100%; }
}