/* ─── Design tokens ──────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
    /* Stripe-style palette */
    --hero-from:    #0a2540;
    --hero-to:      #1a3a5c;
    --stripe-blue:  #635bff;
    --stripe-blue2: #0073e6;
    --indigo:       #3d5afe;
    --white:        #ffffff;
    --off-white:    #f6f9fc;
    --gray-50:      #f6f9fc;
    --gray-100:     #eef2f7;
    --gray-200:     #e3e8ef;
    --gray-300:     #c1cada;
    --text-900:     #0a2540;
    --text-700:     #1a3a5c;
    --text-500:     #425466;
    --text-400:     #697386;
    --text-300:     #8898aa;
    --border:       #e3e8ef;
    --shadow-sm:    0 2px 6px rgba(10,37,64,.06);
    --shadow:       0 4px 16px rgba(10,37,64,.08);
    --shadow-md:    0 8px 32px rgba(10,37,64,.12);
    --shadow-lg:    0 24px 64px rgba(10,37,64,.14);

    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --radius-sm: 5px;
    --radius:    8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
}

/* ─── Reset ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--text-500);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ─── Scroll-reveal ──────────────────────────────────────────────────────── */
.reveal { opacity: 1; transform: none; }
.reveal.animate {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity .5s ease, transform .5s ease;
}
.reveal.animate.visible { opacity: 1; transform: none; }

/* ─── Navigation ─────────────────────────────────────────────────────────── */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10,37,64,.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255,255,255,.07);
}

.nav { padding: 0; }

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 1.5rem;
}

.logo h1 {
    font-size: 1.125rem;
    font-weight: 800;
    color: var(--white);
    letter-spacing: -.02em;
}

.logo .tagline { display: none; }

.logo-link { display: flex; align-items: center; }
.logo-img { height: 32px; width: auto; }

.nav-menu {
    display: flex;
    align-items: center;
    list-style: none;
    gap: .125rem;
}

.nav-menu a {
    display: block;
    padding: .4375rem .8125rem;
    font-size: .875rem;
    font-weight: 500;
    color: rgba(255,255,255,.75);
    border-radius: var(--radius-sm);
    transition: color .15s, background .15s;
}

.nav-menu a:hover {
    color: var(--white);
    background: rgba(255,255,255,.08);
}

.nav-cta {
    background: var(--stripe-blue) !important;
    color: var(--white) !important;
    font-weight: 600 !important;
    border-radius: var(--radius-sm) !important;
    padding: .4375rem 1.125rem !important;
    transition: filter .15s !important;
}

.nav-cta:hover { filter: brightness(1.1); color: var(--white) !important; }

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 22px;
    height: 15px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
}

.nav-toggle span {
    display: block;
    height: 1.5px;
    background: var(--white);
    border-radius: 2px;
    transition: all .25s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.75px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.75px) rotate(-45deg); }

/* ─── Hero ───────────────────────────────────────────────────────────────── */
.hero {
    background: linear-gradient(150deg, #0a2540 0%, #1a3a5c 40%, #0d3068 70%, #1a2c6b 100%);
    color: var(--white);
    padding: 7rem 0 6rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Stripe-style mesh/wave background */
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 20% 50%, rgba(99,91,255,.25) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 80% 20%, rgba(0,115,230,.2) 0%, transparent 55%),
        radial-gradient(ellipse 50% 60% at 60% 80%, rgba(99,91,255,.15) 0%, transparent 50%);
    pointer-events: none;
}

/* subtle diagonal grid */
.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: repeating-linear-gradient(
        -45deg,
        rgba(255,255,255,.02) 0px,
        rgba(255,255,255,.02) 1px,
        transparent 1px,
        transparent 60px
    );
    pointer-events: none;
}

.hero .container { position: relative; z-index: 1; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 99px;
    padding: .3125rem 1rem;
    font-size: .8125rem;
    font-weight: 600;
    color: rgba(255,255,255,.9);
    margin-bottom: 1.75rem;
    letter-spacing: .01em;
}

.hero-badge .dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: #7ee8a2;
    flex-shrink: 0;
}

.hero-content h1 {
    font-size: clamp(2.5rem, 5.5vw, 4rem);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -.04em;
    color: var(--white);
    margin-bottom: 1.375rem;
    max-width: 780px;
    margin-left: auto;
    margin-right: auto;
}

.hero-description {
    font-size: 1.125rem;
    color: rgba(255,255,255,.75);
    line-height: 1.7;
    max-width: 560px;
    margin: 0 auto 2.5rem;
    font-weight: 400;
}

.hero-cta {
    display: flex;
    gap: .875rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3.5rem;
}

/* stat strip inside hero */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
    border-top: 1px solid rgba(255,255,255,.1);
    padding-top: 2.5rem;
}

.hero-stat strong {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--white);
    letter-spacing: -.03em;
}

.hero-stat span {
    font-size: .8125rem;
    color: rgba(255,255,255,.6);
    font-weight: 500;
    letter-spacing: .02em;
    text-transform: uppercase;
}

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .4375rem;
    padding: .6875rem 1.5rem;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: .9375rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all .15s;
    white-space: nowrap;
    letter-spacing: -.01em;
}

.btn-primary {
    background: var(--stripe-blue);
    color: var(--white);
    border-color: var(--stripe-blue);
    box-shadow: 0 4px 14px rgba(99,91,255,.4);
}

.btn-primary:hover {
    filter: brightness(1.1);
    box-shadow: 0 6px 20px rgba(99,91,255,.5);
    transform: translateY(-1px);
}

.btn-secondary {
    background: rgba(255,255,255,.1);
    color: var(--white);
    border-color: rgba(255,255,255,.25);
}

.btn-secondary:hover {
    background: rgba(255,255,255,.18);
    border-color: rgba(255,255,255,.4);
}

.btn-light {
    background: var(--white);
    color: var(--text-700);
    border-color: var(--border);
    box-shadow: var(--shadow-sm);
}

.btn-light:hover {
    border-color: var(--gray-300);
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.btn-blue {
    background: var(--stripe-blue2);
    color: var(--white);
    border-color: var(--stripe-blue2);
}

.btn-blue:hover { filter: brightness(1.08); transform: translateY(-1px); }

/* ─── Trust bar ──────────────────────────────────────────────────────────── */
.trust-bar {
    background: var(--gray-50);
    border-bottom: 1px solid var(--border);
    padding: .875rem 2rem;
    text-align: center;
    font-size: .8125rem;
    color: var(--text-400);
    letter-spacing: .05em;
    text-transform: uppercase;
    font-weight: 500;
}

.trust-bar strong { color: var(--text-700); font-weight: 700; }
.trust-bar .sep { margin: 0 .75rem; color: var(--gray-300); }

/* ─── Assessment bar ─────────────────────────────────────────────────────── */
.assessment-bar {
    background: #eef4ff;
    border-bottom: 1px solid #c7d8f8;
    padding: .75rem 2rem;
}

.assessment-bar .container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    flex-wrap: wrap;
    font-size: .9375rem;
    color: var(--text-700);
}

.assessment-bar-btn {
    background: var(--stripe-blue2);
    color: var(--white);
    padding: .3125rem .875rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: .875rem;
    transition: filter .15s;
}

.assessment-bar-btn:hover { filter: brightness(1.1); }

/* ─── Sections ───────────────────────────────────────────────────────────── */
section { padding: 6rem 0; }

.section-label {
    display: inline-block;
    font-size: .75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--stripe-blue);
    margin-bottom: .75rem;
}

.section-heading {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--text-900);
    line-height: 1.12;
    letter-spacing: -.03em;
    margin-bottom: 1rem;
}

.section-sub {
    font-size: 1.0625rem;
    color: var(--text-400);
    max-width: 580px;
    line-height: 1.7;
}

.section-intro { margin-bottom: 3.5rem; }
.section-intro.center { text-align: center; }
.section-intro.center .section-sub { margin: 0 auto; }

.divider { border: none; border-top: 1px solid var(--border); }

/* ─── Philosophy / value props ───────────────────────────────────────────── */
.philosophy { background: var(--white); }

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 1rem;
}

/* 5 items — let last two span on their row */
@media (min-width: 769px) {
    .philosophy-grid .philosophy-item:nth-child(4) { grid-column: 1 / 2; margin-left: auto; width: 100%; }
    .philosophy-grid .philosophy-item:nth-child(5) { grid-column: 2 / 3; }
}

.philosophy-item {
    background: var(--gray-50);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: box-shadow .2s, border-color .2s, transform .2s;
}

.philosophy-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--gray-300);
    transform: translateY(-3px);
}

.philosophy-item .icon {
    width: 44px; height: 44px;
    background: #eef4ff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    line-height: 0;
}

.philosophy-item h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-900);
    margin-bottom: .5rem;
    letter-spacing: -.01em;
}

.philosophy-item p { font-size: .9375rem; color: var(--text-400); line-height: 1.65; }

/* ─── Services ───────────────────────────────────────────────────────────── */
.services { background: var(--gray-50); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.services-group-label {
    grid-column: 1 / -1;
    font-size: .6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .12em;
    color: var(--stripe-blue);
    padding-bottom: .625rem;
    border-bottom: 1px solid var(--border);
    margin-top: .5rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.25rem;
}

.service-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.875rem;
    box-shadow: var(--shadow-sm);
    transition: box-shadow .2s, border-color .2s, transform .2s;
}

.service-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--gray-300);
    transform: translateY(-3px);
}

.service-icon {
    width: 44px; height: 44px;
    background: #eef4ff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.125rem;
    line-height: 0;
}

.service-card h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text-900);
    margin-bottom: 1rem;
    letter-spacing: -.01em;
}

.service-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}

.service-list li {
    font-size: .875rem;
    color: var(--text-400);
    padding-left: 1.125rem;
    position: relative;
    line-height: 1.55;
}

.service-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: .5em;
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--stripe-blue);
}

.service-list strong { color: var(--text-700); font-weight: 600; }

/* ─── Cohabitation ───────────────────────────────────────────────────────── */
.cohabitation { background: var(--white); }

.cohabitation-examples {
    margin-top: 3rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.cohabitation-examples h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-900);
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border);
    letter-spacing: -.01em;
    background: var(--gray-50);
}

.scenario-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 0;
}

.scenario {
    padding: 1.5rem 2rem;
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    transition: background .15s;
}

.scenario:hover { background: var(--gray-50); }
.scenario:last-child { border-right: none; }

.scenario strong {
    display: block;
    font-size: .875rem;
    font-weight: 700;
    color: var(--stripe-blue);
    margin-bottom: .5rem;
    letter-spacing: -.01em;
}

.scenario p { font-size: .875rem; color: var(--text-400); line-height: 1.6; }

/* ─── Approach ───────────────────────────────────────────────────────────── */
.approach { background: var(--gray-50); border-top: 1px solid var(--border); }

.approach-steps { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 1.25rem; }

.step {
    display: flex;
    gap: 1.75rem;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.875rem;
    box-shadow: var(--shadow-sm);
    transition: box-shadow .2s, transform .2s;
    align-items: flex-start;
}

.step:hover { box-shadow: var(--shadow); transform: translateY(-2px); }

.step-number {
    flex-shrink: 0;
    width: 48px; height: 48px;
    background: linear-gradient(135deg, var(--stripe-blue) 0%, var(--indigo) 100%);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    font-weight: 800;
    box-shadow: 0 4px 12px rgba(99,91,255,.35);
}

.step-content h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text-900);
    margin-bottom: .5rem;
    letter-spacing: -.01em;
}

.step-content p { color: var(--text-400); font-size: .9375rem; margin-bottom: .875rem; line-height: 1.65; }

.step-content ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: .375rem .75rem;
}

.step-content li {
    font-size: .875rem;
    color: var(--text-500);
    padding-left: 1rem;
    position: relative;
}

.step-content li::before {
    content: "";
    position: absolute;
    left: 0; top: .55em;
    width: 4px; height: 4px;
    border-radius: 50%;
    background: var(--stripe-blue);
}

/* ─── Benefits ───────────────────────────────────────────────────────────── */
.benefits { background: var(--white); }

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    margin-bottom: 4rem;
}

.benefit-card {
    background: var(--gray-50);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: box-shadow .2s, transform .2s;
}

.benefit-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }

.benefit-card h3 {
    font-size: .875rem;
    font-weight: 700;
    color: var(--text-500);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: .75rem;
}

.stat {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--text-900);
    letter-spacing: -.04em;
    line-height: 1;
    margin: .5rem 0 .875rem;
}

.benefit-card p { font-size: .875rem; color: var(--text-400); line-height: 1.6; }

/* testimonial */
.case-study {
    background: linear-gradient(135deg, var(--hero-from) 0%, var(--hero-to) 100%);
    color: var(--white);
    padding: 3rem;
    border-radius: var(--radius-xl);
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.case-study::before {
    content: '\201C';
    position: absolute;
    top: -.5rem; left: 1.5rem;
    font-size: 8rem;
    color: rgba(255,255,255,.08);
    line-height: 1;
    font-family: Georgia, serif;
}

.case-study h3 {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    opacity: .6;
    margin-bottom: 1.5rem;
}

.case-study blockquote {
    font-size: 1.1875rem;
    line-height: 1.75;
    font-style: italic;
    font-weight: 400;
    color: rgba(255,255,255,.92);
    position: relative;
    z-index: 1;
}

.case-study cite {
    display: block;
    margin-top: 1.5rem;
    font-size: .875rem;
    color: rgba(255,255,255,.55);
    font-style: normal;
    font-weight: 500;
    text-align: right;
}

/* ─── Expertise ──────────────────────────────────────────────────────────── */
.expertise { background: var(--gray-50); border-top: 1px solid var(--border); }

.tech-categories { display: grid; gap: 1rem; }

.tech-category {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem 1.75rem;
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 1.5rem;
    align-items: center;
    transition: box-shadow .2s;
}

.tech-category:hover { box-shadow: var(--shadow-sm); }

.tech-category h4 {
    font-size: .875rem;
    font-weight: 700;
    color: var(--text-700);
    letter-spacing: -.01em;
}

.tech-tags { display: flex; flex-wrap: wrap; gap: .5rem; }

.tech-tags span {
    background: #eef4ff;
    color: var(--stripe-blue);
    padding: .3125rem .75rem;
    border-radius: 99px;
    font-size: .8125rem;
    font-weight: 500;
    border: 1px solid #c7d8f8;
}

.section-teaser {
    margin-top: 1rem;
    font-size: .9375rem;
}
.section-teaser a {
    color: var(--stripe-blue);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color .15s;
}
.section-teaser a:hover { border-bottom-color: var(--stripe-blue); }
.hero-teaser { margin-top: .75rem; margin-bottom: 1.5rem; }
.hero-teaser a { color: rgba(255,255,255,.75); }
.hero-teaser a:hover { color: #fff; border-bottom-color: rgba(255,255,255,.5); }

/* ─── OSS Alternatives ───────────────────────────────────────────────────── */
.oss-alternatives {
    background: var(--white);
    border-top: 1px solid var(--border);
}

.oss-grid {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.oss-category-label {
    font-size: .6875rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--stripe-blue);
    margin-bottom: 1rem;
    padding-bottom: .5rem;
    border-bottom: 1px solid var(--border);
}

.oss-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.oss-card {
    display: flex;
    flex-direction: column;
    gap: .5rem;
    background: var(--off-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.375rem;
    transition: box-shadow .18s, border-color .18s, transform .18s;
    cursor: pointer;
    color: inherit;
    text-decoration: none;
}

.oss-card:hover {
    box-shadow: var(--shadow);
    border-color: #c7d8f8;
    transform: translateY(-2px);
}

.oss-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .5rem;
}

.oss-replaces {
    font-size: .75rem;
    color: var(--text-400);
    font-weight: 500;
}

.oss-stars {
    font-size: .75rem;
    font-weight: 700;
    color: #f5a623;
    white-space: nowrap;
    letter-spacing: .01em;
}

.oss-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-900);
    letter-spacing: -.02em;
}

.oss-desc {
    font-size: .875rem;
    color: var(--text-400);
    line-height: 1.6;
}

.oss-footnote {
    margin-top: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 1.5rem 2rem;
    background: var(--off-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    flex-wrap: wrap;
}

.oss-footnote p {
    font-size: .9375rem;
    color: var(--text-500);
}

/* ─── Contact ────────────────────────────────────────────────────────────── */
.contact {
    background: linear-gradient(150deg, var(--hero-from) 0%, var(--hero-to) 60%, #0d3068 100%);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 70% at 90% 50%, rgba(99,91,255,.2) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 10% 20%, rgba(0,115,230,.15) 0%, transparent 55%);
    pointer-events: none;
}

.contact .container { position: relative; z-index: 1; }

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 5rem;
    align-items: start;
}

.contact-info .section-label { color: #a5b4fc; }
.contact-info .section-heading { color: var(--white); margin-bottom: 1rem; }

.contact-info > p {
    font-size: 1rem;
    color: rgba(255,255,255,.7);
    line-height: 1.75;
    margin-bottom: 2rem;
}

.contact-methods { margin-bottom: 2rem; }

.contact-method {
    display: flex;
    align-items: center;
    gap: .875rem;
    padding: .875rem 0;
    border-bottom: 1px solid rgba(255,255,255,.08);
    font-size: .9375rem;
}

.contact-method:last-child { border-bottom: none; }

.contact-method-icon {
    width: 36px; height: 36px;
    background: rgba(255,255,255,.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    line-height: 0;
}

.contact-method strong {
    color: rgba(255,255,255,.55);
    font-weight: 500;
    min-width: 80px;
    font-size: .875rem;
}

.contact-method a {
    color: var(--white);
    font-weight: 500;
    transition: opacity .15s;
}

.contact-method a:hover { opacity: .75; }
.contact-method span { color: rgba(255,255,255,.8); }

.contact-cta {
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.15);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.contact-cta h3 { font-size: 1rem; font-weight: 700; margin-bottom: .375rem; }
.contact-cta p { font-size: .9375rem; opacity: .75; line-height: 1.6; }

/* form */
.contact-form-container {
    background: rgba(255,255,255,.07);
    border: 1px solid rgba(255,255,255,.14);
    border-radius: var(--radius-xl);
    padding: 2.25rem;
    backdrop-filter: blur(12px);
}

.form-success {
    background: rgba(126,232,162,.15);
    border: 1px solid rgba(126,232,162,.4);
    color: #7ee8a2;
    padding: 1.25rem;
    border-radius: var(--radius);
    font-size: 1rem;
    text-align: center;
    margin-bottom: 1rem;
}

.form-error {
    background: rgba(239,68,68,.15);
    border: 1px solid rgba(239,68,68,.4);
    color: #fca5a5;
    padding: .875rem 1rem;
    border-radius: var(--radius);
    font-size: .875rem;
    margin-bottom: 1rem;
}

.form-error:empty { display: none; }
.field-error { color: #fca5a5; font-size: .8125rem; margin-top: .25rem; }

.contact-form { display: flex; flex-direction: column; gap: 1.125rem; }

.form-group { display: flex; flex-direction: column; gap: .375rem; }

.form-group label {
    font-size: .6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: rgba(255,255,255,.55);
}

.form-group input,
.form-group textarea {
    padding: .6875rem .9375rem;
    border: 1px solid rgba(255,255,255,.15);
    border-radius: var(--radius);
    background: rgba(255,255,255,.07);
    color: var(--white);
    font-family: var(--font);
    font-size: .9375rem;
    transition: border-color .15s, background .15s;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,.3); }

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: rgba(255,255,255,.4);
    background: rgba(255,255,255,.1);
}

.form-group textarea { resize: vertical; }

.radio-group { display: flex; flex-direction: column; gap: .625rem; }

.radio-label {
    display: flex;
    align-items: center;
    gap: .625rem;
    font-size: .9375rem;
    font-weight: 400;
    color: rgba(255,255,255,.8);
    cursor: pointer;
    text-transform: none;
    letter-spacing: 0;
}

.radio-label input[type="radio"] {
    width: 1rem; height: 1rem;
    accent-color: var(--stripe-blue);
    cursor: pointer;
}

/* ─── CTA band ───────────────────────────────────────────────────────────── */
.cta-band {
    background: var(--gray-50);
    border-top: 1px solid var(--border);
    text-align: center;
    padding: 5.5rem 2rem;
}

.cta-band h2 {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -.035em;
    color: var(--text-900);
    margin-bottom: .875rem;
}

.cta-band p {
    font-size: 1.0625rem;
    color: var(--text-400);
    margin-bottom: 2rem;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

/* ─── Footer ─────────────────────────────────────────────────────────────── */
.footer {
    background: var(--text-900);
    color: rgba(255,255,255,.5);
    padding: 3.5rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255,255,255,.07);
}

.footer-section h4 {
    font-size: .6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: rgba(255,255,255,.9);
    margin-bottom: 1.125rem;
}

.footer-section p { font-size: .875rem; line-height: 1.7; max-width: 240px; }

.footer-section ul { list-style: none; }
.footer-section li { margin-bottom: .5rem; }

.footer-section a {
    font-size: .875rem;
    color: rgba(255,255,255,.5);
    transition: color .15s;
}

.footer-section a:hover { color: var(--white); }

.footer-tagline { color: rgba(255,255,255,.35); font-style: italic; margin-top: .5rem; font-size: .875rem; }

.footer-bottom {
    display: flex;
    justify-content: space-between;
    font-size: .8125rem;
    flex-wrap: wrap;
    gap: .5rem;
}

/* ─── Article pages ──────────────────────────────────────────────────────── */
.article-hero {
    background: linear-gradient(150deg, var(--hero-from) 0%, var(--hero-to) 100%);
    color: var(--white);
    padding: 4.5rem 0 3.5rem;
}

.article-hero h1 {
    font-size: 2.5rem;
    line-height: 1.12;
    margin-bottom: 1rem;
    font-weight: 800;
    letter-spacing: -.035em;
}

.article-kicker {
    display: inline-block;
    margin-bottom: 1rem;
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: rgba(255,255,255,.65);
}

.article-summary { max-width: 720px; font-size: 1.125rem; color: rgba(255,255,255,.8); line-height: 1.75; }

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    margin-top: 1.5rem;
    color: rgba(255,255,255,.6);
    font-size: .875rem;
}

.article-layout { padding: 4rem 0; background: var(--white); }
.article-shell { max-width: 740px; margin: 0 auto; }

.article-shell p,
.article-shell li { font-size: 1rem; line-height: 1.85; color: var(--text-500); }

.article-shell h2,
.article-shell h3 {
    color: var(--text-900);
    margin: 2.5rem 0 .875rem;
    font-weight: 800;
    letter-spacing: -.025em;
}

.article-shell ul,
.article-shell ol { padding-left: 1.5rem; }

.article-shell blockquote {
    margin: 2rem 0;
    padding: 1.25rem 1.5rem;
    border-left: 3px solid var(--stripe-blue);
    background: #eef4ff;
    color: var(--text-700);
    border-radius: 0 var(--radius) var(--radius) 0;
}

.article-grid { display: grid; gap: 1.25rem; }

.article-card {
    display: block;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-sm);
    transition: transform .2s, box-shadow .2s, border-color .2s;
}

.article-card:hover {
    transform: translateY(-3px);
    border-color: var(--gray-300);
    box-shadow: var(--shadow-md);
}

.article-card h2 { font-size: 1.25rem; margin-bottom: .625rem; color: var(--text-900); font-weight: 700; letter-spacing: -.02em; }
.article-card p { color: var(--text-400); font-size: .9375rem; line-height: 1.6; }
.article-card .article-meta { margin-top: 1rem; color: var(--text-300); }

.article-cta {
    margin-top: 3rem;
    padding: 1.875rem;
    border-radius: var(--radius-lg);
    background: #eef4ff;
    border: 1px solid #c7d8f8;
}

.article-cta h3 { margin-top: 0; color: var(--text-900); font-size: 1rem; font-weight: 700; }

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .benefits-grid { grid-template-columns: repeat(2, 1fr); }
    .tech-category { grid-template-columns: 1fr; gap: .875rem; }
    .oss-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    section { padding: 4rem 0; }

    .nav-toggle { display: flex; }

    .nav-menu {
        display: none;
        flex-direction: column;
        gap: 0;
        position: absolute;
        top: 100%;
        left: 0; right: 0;
        background: rgba(10,37,64,.97);
        border-top: 1px solid rgba(255,255,255,.07);
        padding: .75rem 1.5rem 1.25rem;
        backdrop-filter: blur(16px);
        box-shadow: 0 8px 32px rgba(0,0,0,.3);
    }

    .nav-menu.open { display: flex; }
    .nav-menu li { border-bottom: 1px solid rgba(255,255,255,.06); }
    .nav-menu li:last-child { border-bottom: none; }
    .nav-menu a { padding: .875rem 0; border-radius: 0; font-size: .9375rem; }

    .header { position: relative; }

    .hero { padding: 4.5rem 0 3.5rem; }
    .hero-content h1 { font-size: 2.25rem; }
    .hero-cta { flex-direction: column; align-items: center; }
    .hero-stats { gap: 2rem; }

    .philosophy-grid,
    .services-grid { grid-template-columns: 1fr; }

    .benefits-grid { grid-template-columns: repeat(2, 1fr); }

    .contact-content { grid-template-columns: 1fr; gap: 3rem; }

    .step { flex-direction: column; gap: 1rem; }
    .step-content ul { grid-template-columns: 1fr; }

    .scenario-grid { grid-template-columns: 1fr; }
    .scenario { border-right: none; }

    .footer-content { grid-template-columns: 1fr; gap: 2rem; }
    .footer-bottom { flex-direction: column; }

    .article-hero h1 { font-size: 1.875rem; }
}

@media (max-width: 480px) {
    .benefits-grid { grid-template-columns: 1fr; }
    .hero-stats { flex-direction: column; gap: 1.5rem; }
    .oss-cards { grid-template-columns: 1fr; }
    .oss-footnote { flex-direction: column; align-items: flex-start; }
}