:root {
    --ink-deep: #101826;
    --ink-panel: #16202F;
    --ink-panel-2: #1C2A3D;
    --line-grid: rgba(139,176,209,0.14);
    --line-solid: rgba(139,176,209,0.28);
    --blueprint: #5B8AA6;
    --blueprint-bright: #8FC1E3;
    --copper: #C97A4A;
    --copper-bright: #E39463;
    --paper: #EEF2F6;
    --paper-dim: #B7C4D3;
    --ok: #7FB88A;
    font-size: 16px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--ink-deep);
    color: var(--paper);
    font-family: 'IBM Plex Sans', sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.bp-grid {
    background-image: linear-gradient(var(--line-grid) 1px, transparent 1px), linear-gradient(90deg, var(--line-grid) 1px, transparent 1px);
    background-size: 48px 48px;
}

h1, h2, h3, h4 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    color: var(--paper);
    margin: 0 0 .5em 0;
    letter-spacing: -0.01em;
}

.mono {
    font-family: 'IBM Plex Mono', monospace;
}

a {
    color: inherit;
}

.wrap {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 28px;
}

.eyebrow {
    font-family: 'IBM Plex Mono', monospace;
    font-size: .78rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--blueprint-bright);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
}

    .eyebrow::before {
        content: '';
        width: 22px;
        height: 1px;
        background: var(--blueprint-bright);
        display: inline-block;
    }

/* Header */
header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(16,24,38,0.86);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line-grid);
}

    header .wrap {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 72px;
    }

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Space Grotesk';
    font-weight: 600;
    font-size: 1.05rem;
}

.brand-mark {
    width: 34px;
    height: 34px;
    border: 1.5px solid var(--blueprint);
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'IBM Plex Mono';
    font-size: .7rem;
    color: var(--blueprint-bright);
    position: relative;
}

    .brand-mark::after {
        content: '';
        position: absolute;
        inset: 5px;
        border: 1px dashed var(--copper);
        border-radius: 2px;
    }

.brand small {
    display: block;
    font-family: 'IBM Plex Mono';
    font-weight: 400;
    font-size: .68rem;
    color: var(--paper-dim);
    letter-spacing: .06em;
}

nav {
    display: flex;
    align-items: center;
    gap: 32px;
    font-size: .92rem;
    color: var(--paper-dim);
}

    nav a {
        text-decoration: none;
        transition: color .15s;
    }

        nav a:hover {
            color: var(--paper);
        }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 24px;
    border-radius: 2px;
    font-family: 'IBM Plex Mono';
    font-size: .86rem;
    font-weight: 500;
    text-decoration: none;
    letter-spacing: .02em;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform .15s ease, box-shadow .15s ease;
}

    .btn:hover {
        transform: translateY(-1px);
    }

.btn-copper {
    background: var(--copper);
    color: #1A1108;
}

    .btn-copper:hover {
        background: var(--copper-bright);
        box-shadow: 0 6px 20px rgba(201,122,74,.35);
    }

.btn-ghost {
    border-color: var(--line-solid);
    color: var(--paper);
}

    .btn-ghost:hover {
        border-color: var(--blueprint-bright);
        color: var(--blueprint-bright);
    }

.btn-small {
    padding: 9px 16px;
    font-size: .78rem;
}

/* Hero */
.hero {
    padding: 100px 0 90px;
    position: relative;
    overflow: hidden;
}

    .hero .wrap {
        display: grid;
        grid-template-columns: 1.1fr .9fr;
        gap: 60px;
        align-items: center;
    }

    .hero h1 {
        font-size: 2.9rem;
        line-height: 1.12;
        max-width: 640px;
    }

        .hero h1 .accent {
            color: var(--blueprint-bright);
        }

    .hero p.lead {
        font-size: 1.12rem;
        color: var(--paper-dim);
        max-width: 520px;
        margin-bottom: 32px;
    }

.hero-ctas {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Perimeter diagram (signature element) */
.perimeter {
    position: relative;
    border: 1.5px dashed var(--blueprint);
    border-radius: 6px;
    padding: 26px;
    background: radial-gradient(circle at 30% 20%, rgba(91,138,166,.10), transparent 60%);
    min-height: 300px;
}

.perimeter-label {
    position: absolute;
    top: -11px;
    left: 22px;
    background: var(--ink-deep);
    padding: 0 8px;
    font-family: 'IBM Plex Mono';
    font-size: .7rem;
    color: var(--blueprint-bright);
    letter-spacing: .08em;
    text-transform: uppercase;
}

.perimeter-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    gap: 14px;
    text-align: center;
}

.node {
    width: 74px;
    height: 74px;
    border-radius: 8px;
    background: var(--ink-panel-2);
    border: 1px solid var(--line-solid);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'IBM Plex Mono';
    font-size: 1.6rem;
    color: var(--blueprint-bright);
}

.node-label {
    font-family: 'IBM Plex Mono';
    font-size: .72rem;
    color: var(--paper-dim);
}

.barrier-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 6px;
}

.barrier-line {
    width: 60px;
    height: 1px;
    background: repeating-linear-gradient(90deg, var(--copper) 0 6px, transparent 6px 10px);
}

.cloud-x {
    font-family: 'IBM Plex Mono';
    font-size: .7rem;
    color: #B06A55;
    border: 1px solid rgba(201,122,74,.4);
    border-radius: 3px;
    padding: 4px 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

section {
    padding: 88px 0;
    border-bottom: 1px solid var(--line-grid);
}

.section-head {
    max-width: 640px;
    margin-bottom: 48px;
}

    .section-head h2 {
        font-size: 2rem;
    }

    .section-head p {
        color: var(--paper-dim);
        font-size: 1.05rem;
    }

/* Qualification checklist */
.qual-panel {
    border: 1px solid var(--line-solid);
    border-radius: 6px;
    background: var(--ink-panel);
    padding: 40px;
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 40px;
}

.qual-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

    .qual-list li {
        display: flex;
        align-items: flex-start;
        gap: 14px;
        font-size: 1rem;
    }

.qual-check {
    flex: none;
    width: 22px;
    height: 22px;
    border-radius: 4px;
    border: 1px solid var(--ok);
    color: var(--ok);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'IBM Plex Mono';
    font-size: .75rem;
    margin-top: 2px;
}

.qual-side {
    border-left: 1px solid var(--line-grid);
    padding-left: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 18px;
}

    .qual-side p {
        color: var(--paper-dim);
    }

/* Product tiers */
.tiers {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 24px;
}

.tier {
    border: 1px solid var(--line-solid);
    border-radius: 6px;
    background: var(--ink-panel);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

    .tier.popular {
        border-color: var(--copper);
    }

.tier-flag {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--copper);
    color: #1A1108;
    font-family: 'IBM Plex Mono';
    font-size: .68rem;
    letter-spacing: .08em;
    padding: 6px 14px;
    border-bottom-left-radius: 6px;
    font-weight: 600;
}

.tier-head {
    padding: 32px 28px 20px;
    border-bottom: 1px dashed var(--line-solid);
}

    .tier-head .tier-name {
        font-family: 'IBM Plex Mono';
        font-size: 1.58rem;
        letter-spacing: .1em;
        text-transform: uppercase;
        color: var(--blueprint-bright);
        margin-bottom: 10px;
    }

    .tier-head h3 {
        font-size: 1.5rem;
        margin-bottom: 10px;
    }

    .tier-head p {
        color: var(--paper-dim);
        font-size: .95rem;
        margin: 0;
    }

.tier-specs {
    padding: 22px 28px;
    flex: 1;
    font-family: 'IBM Plex Mono';
    font-size: .86rem;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    color: var(--paper-dim);
    border-bottom: 1px dotted rgba(183,196,211,.18);
    padding-bottom: 10px;
}

    .spec-row span:last-child {
        color: var(--paper);
        text-align: right;
    }

.tier-price {
    padding: 24px 28px;
    border-top: 1px solid var(--line-grid);
}

    .tier-price .from {
        font-family: 'IBM Plex Mono';
        font-size: .72rem;
        color: var(--paper-dim);
        text-transform: uppercase;
        letter-spacing: .08em;
    }

    .tier-price .amount {
        font-family: 'Space Grotesk';
        font-size: 2.1rem;
        font-weight: 600;
        margin: 4px 0 18px;
    }

    .tier-price .btn {
        width: 100%;
        justify-content: center;
    }

.tiers-note {
    margin-top: 28px;
    padding: 20px 28px;
    border: 1px dashed var(--line-solid);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
    color: var(--paper-dim);
    font-size: .94rem;
}

/* Partner section */
.partner-block {
    display: grid;
    grid-template-columns: .4fr 1fr;
    gap: 48px;
    align-items: center;
}

.partner-num {
    font-family: 'IBM Plex Mono';
    font-size: 5rem;
    color: var(--blueprint);
    opacity: .5;
    line-height: 1;
}

/* Use cases */
.cases {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 28px;
    margin-bottom: 36px;
}

.case {
    border: 1px solid var(--line-grid);
    border-radius: 6px;
    padding: 30px 26px;
    background: var(--ink-panel);
}

.case-icon {
    width: 44px;
    height: 44px;
    border-radius: 6px;
    background: var(--ink-panel-2);
    border: 1px solid var(--line-solid);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 18px;
}

.case h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.case p {
    color: var(--paper-dim);
    font-size: .94rem;
    margin: 0;
}

.models-note {
    font-family: 'IBM Plex Mono';
    font-size: .86rem;
    color: var(--paper-dim);
    border-top: 1px solid var(--line-grid);
    padding-top: 26px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

/* FAQ */
.faq {
    display: flex;
    flex-direction: column;
    gap: 1px;
    background: var(--line-grid);
    border: 1px solid var(--line-grid);
    border-radius: 6px;
    overflow: hidden;
}

.faq-item {
    background: var(--ink-panel);
    padding: 26px 28px;
}

    .faq-item h4 {
        font-size: 1.02rem;
        margin-bottom: 8px;
        display: flex;
        gap: 14px;
    }

        .faq-item h4 .qmark {
            font-family: 'IBM Plex Mono';
            color: var(--copper-bright);
        }

    .faq-item p {
        color: var(--paper-dim);
        margin: 0 0 0 30px;
        font-size: .95rem;
    }

/* Final CTA */
.final-cta {
    text-align: center;
    padding: 100px 0;
    background: radial-gradient(circle at 50% 0%, rgba(91,138,166,.14), transparent 60%);
    border-bottom: none;
}

    .final-cta h2 {
        font-size: 2.3rem;
        max-width: 680px;
        margin: 0 auto 18px;
    }

    .final-cta p {
        color: var(--paper-dim);
        max-width: 560px;
        margin: 0 auto 36px;
        font-size: 1.05rem;
    }

.trust-line {
    margin-top: 44px;
    font-family: 'IBM Plex Mono';
    font-size: .82rem;
    color: var(--paper-dim);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
}

    .trust-line::before, .trust-line::after {
        content: '';
        width: 40px;
        height: 1px;
        background: var(--line-solid);
    }

footer {
    padding: 36px 0;
    text-align: center;
    font-family: 'IBM Plex Mono';
    font-size: .78rem;
    color: var(--paper-dim);
}

/* Form contatto */
.form-group {
    margin-bottom: 14px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-bottom: 14px;
}

.form-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: .78rem;
    color: var(--paper-dim);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 10px 12px;
    border-radius: 2px;
    border: 1px solid var(--line-solid);
    background: var(--ink-panel);
    color: var(--paper);
    font-family: 'IBM Plex Sans', sans-serif;
}

.form-textarea {
    resize: vertical;
}

.form-consent {
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

    .form-consent input[type="checkbox"] {
        margin-top: 4px;
    }

    .form-consent label {
        font-family: 'IBM Plex Mono', monospace;
        font-size: .76rem;
        color: var(--paper-dim);
    }

.form-message {
    margin-top: 14px;
    text-align: center;
    font-family: 'IBM Plex Mono', monospace;
    font-size: .86rem;
    display: none;
}

.form-success {
    color: var(--ok) !important;
}

.form-error {
    color: #E39463 !important;
}

@media (max-width:860px) {
    .hero .wrap {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 2.1rem;
    }

    .qual-panel {
        grid-template-columns: 1fr;
    }

    .qual-side {
        border-left: none;
        border-top: 1px solid var(--line-grid);
        padding-left: 0;
        padding-top: 24px;
    }

    .tiers {
        grid-template-columns: 1fr;
    }

    .partner-block {
        grid-template-columns: 1fr;
    }

    .cases {
        grid-template-columns: 1fr;
    }

    nav {
        display: none;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}