:root {
    --navy: #08111a;
    --navy-2: #0d1822;
    --navy-3: #132331;
    --ice: #a9d8ef;
    --ice-bright: #d8f1fc;
    --blue: #4ca9d6;
    --white: #ffffff;
    --off-white: #f4f6f7;
    --gray: #9cabb7;
    --dark-gray: #55636e;
    --border: rgba(255,255,255,.14);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

a {
    color: inherit;
}

.site-header {
    position: absolute;
    width: 100%;
    z-index: 100;
    border-bottom:
        1px solid rgba(255,255,255,.18);
}

.header-inner {
    width: min(1500px, 92%);
    height: 92px;
    margin: auto;

    display: flex;
    align-items: center;
    gap: 40px;
}

.brand {
    text-decoration: none;
    color: white;
    display: flex;
    flex-direction: column;
    min-width: 260px;
}

.brand-mark {
    font-size: 28px;
    line-height: 1;
    font-weight: 800;
    letter-spacing: .14em;
}

.brand-name {
    font-size: 10px;
    margin-top: 7px;
    letter-spacing: .16em;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 27px;
    margin-left: auto;
}

.main-nav a {
    color: white;
    text-decoration: none;
    font-size: 13px;
    white-space: nowrap;
    opacity: .88;
}

.main-nav a:hover {
    opacity: 1;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 17px;
}

.login-link {
    color: white;
    text-decoration: none;
    font-size: 12px;
    white-space: nowrap;
}

.header-button {
    color: white;
    border: 1px solid rgba(255,255,255,.6);
    padding: 12px 17px;
    text-decoration: none;
    font-size: 12px;
    white-space: nowrap;
}


/* HERO */

.hero {
    min-height: 860px;
    position: relative;

    background-image:
        linear-gradient(
            90deg,
            rgba(4,12,20,.92) 0%,
            rgba(4,12,20,.76) 37%,
            rgba(4,12,20,.30) 72%,
            rgba(4,12,20,.18) 100%
        ),
        url('/static/images/ssi-hero.jpg');

    background-size: cover;
    background-position: center;
    color: white;

    display: flex;
    flex-direction: column;
}

.hero-inner {
    width: min(1500px, 92%);
    margin: auto;
    flex: 1;

    display: flex;
    align-items: center;

    padding-top: 130px;
    padding-bottom: 100px;
}

.hero-copy {
    max-width: 790px;
}

.eyebrow,
.section-label {
    font-size: 12px;
    letter-spacing: .26em;
    font-weight: 700;
    margin-bottom: 23px;
}

.eyebrow {
    color: var(--ice);
}

.hero h1 {
    margin: 0;
    font-size: clamp(58px, 6.8vw, 106px);
    line-height: .91;
    letter-spacing: -.045em;
    font-weight: 700;
}

.hero h1 span {
    display: block;
    color: var(--ice-bright);
}

.hero-description {
    font-size: 18px;
    line-height: 1.65;
    max-width: 700px;
    color: rgba(255,255,255,.86);
    margin: 32px 0 0;
}

.hero-buttons {
    margin-top: 40px;
    display: flex;
    gap: 13px;
}

.button {
    display: inline-block;
    padding: 16px 23px;
    text-decoration: none;
    font-size: 13px;
    font-weight: 700;
}

.button-primary {
    color: var(--navy);
    background: white;
}

.button-secondary {
    color: white;
    border: 1px solid rgba(255,255,255,.65);
}

.hero-bottom {
    border-top:
        1px solid rgba(255,255,255,.18);

    width: 100%;
    padding: 0 4%;

    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.hero-stat {
    min-height: 88px;
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 0 25px;

    border-right:
        1px solid rgba(255,255,255,.14);

    font-size: 13px;
    letter-spacing: .05em;
}

.hero-stat span {
    color: var(--ice);
    font-size: 11px;
}


/* GENERAL */

.section-inner {
    width: min(1380px, 88%);
    margin: auto;
}

.section-label {
    color: #57778b;
}

.section-label.light {
    color: var(--ice);
}

.section-label.blue {
    color: var(--blue);
}

.intro-section {
    padding: 120px 0 105px;
}

.intro-grid {
    display: grid;
    grid-template-columns:
        minmax(0, 1.05fr)
        minmax(0, .95fr);

    gap: 120px;
}

.intro-grid h2,
.engineering-grid h2,
.cta-grid h2 {
    font-size: clamp(43px, 5vw, 72px);
    line-height: 1;
    margin: 0;
    letter-spacing: -.04em;
}

.intro-copy p,
.engineering-copy p {
    margin: 0 0 22px;
    color: var(--dark-gray);
    line-height: 1.8;
    font-size: 17px;
}


/* CAPABILITIES */

.capabilities-section {
    background: var(--off-white);
    padding: 0;
}

.capability-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.capability-card {
    min-height: 570px;
    padding: 52px 35px;
    border-right: 1px solid #dce2e5;
    position: relative;
}

.capability-card:first-child {
    border-left: 1px solid #dce2e5;
}

.capability-card.featured {
    background: var(--navy);
    color: white;
}

.card-number {
    font-size: 12px;
    color: #7492a2;
    margin-bottom: 42px;
}

.card-tag {
    font-size: 9px;
    letter-spacing: .18em;
    color: var(--ice);
    margin: -25px 0 17px;
}

.capability-card h3 {
    font-size: 27px;
    line-height: 1.1;
    margin: 0 0 25px;
}

.capability-card p {
    font-size: 14px;
    line-height: 1.7;
    color: #63727c;
}

.capability-card.featured p {
    color: #b8c5ce;
}

.capability-card ul {
    list-style: none;
    padding: 0;
    margin: 35px 0;
}

.capability-card li {
    padding: 10px 0;
    font-size: 13px;
    border-bottom: 1px solid #d9e0e4;
}

.capability-card.featured li {
    border-color: rgba(255,255,255,.13);
}

.capability-card > a {
    position: absolute;
    left: 35px;
    bottom: 40px;

    text-decoration: none;
    font-size: 12px;
    font-weight: 700;
}


/* PLANNING */

.planning-section {
    background: var(--navy);
    color: white;
}

.planning-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 820px;
}

.planning-photo {
    background:
        linear-gradient(
            rgba(6,17,27,.15),
            rgba(6,17,27,.30)
        ),
        url('/static/images/ssi-hero.jpg');

    background-size: cover;
    background-position: center;
}

.planning-content {
    padding: 90px clamp(45px, 7vw, 120px);
}

.planning-content h2 {
    font-size: clamp(45px, 5vw, 76px);
    line-height: .98;
    letter-spacing: -.045em;
    margin: 0 0 30px;
}

.planning-lead {
    font-size: 17px;
    line-height: 1.75;
    color: #b9c7d0;
    max-width: 660px;
}

.planning-list {
    margin-top: 55px;
}

.planning-item {
    display: grid;
    grid-template-columns: 50px 1fr;
    gap: 20px;

    border-top:
        1px solid rgba(255,255,255,.16);

    padding: 21px 0;
}

.planning-item span {
    color: var(--ice);
    font-size: 11px;
}

.planning-item h4 {
    margin: 0 0 8px;
    font-size: 16px;
}

.planning-item p {
    margin: 0;
    color: #93a5b1;
    font-size: 13px;
    line-height: 1.6;
}

.text-link {
    display: inline-block;
    color: white;
    margin-top: 35px;
    text-decoration: none;
    font-weight: 700;
    font-size: 13px;
}


/* ENGINEERING */

.engineering-section {
    padding: 125px 0;
}

.engineering-grid {
    display: grid;
    grid-template-columns: 1fr .8fr;
    gap: 120px;
}

.dark-link {
    display: inline-block;
    text-decoration: none;
    font-size: 13px;
    font-weight: 700;
    margin-top: 15px;
}


/* SNOW CONTROL */

.snowcontrol-section {
    background: #eaf2f6;
    padding: 80px 0;
}

.snowcontrol-box {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 80px;
}

.snowcontrol-box h2 {
    font-size: 57px;
    margin: 0 0 22px;
}

.snowcontrol-box p {
    max-width: 720px;
    color: #556875;
    font-size: 16px;
    line-height: 1.7;
}

.snowcontrol-actions {
    display: flex;
    gap: 10px;
}

.button-blue {
    background: var(--navy);
    color: white;
}

.button-dark-outline {
    border: 1px solid var(--navy);
}


/* CTA */

.cta-section {
    background: var(--navy-2);
    color: white;
    padding: 110px 0;
}

.cta-grid {
    display: grid;
    grid-template-columns: 1fr .75fr;
    gap: 120px;
    align-items: end;
}

.cta-content p {
    color: #aab9c3;
    font-size: 17px;
    line-height: 1.7;
    margin: 0 0 30px;
}


/* FOOTER */

.site-footer {
    background: #050b10;
    color: white;
    padding: 65px 6% 30px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    display: flex;
    flex-direction: column;
}

.footer-brand strong {
    font-size: 30px;
    letter-spacing: .1em;
}

.footer-brand span {
    font-size: 9px;
    letter-spacing: .18em;
    margin-top: 7px;
}

.footer-links {
    display: flex;
    gap: 25px;
}

.footer-links a {
    text-decoration: none;
    color: #aebac3;
    font-size: 12px;
}

.footer-bottom {
    margin-top: 55px;
    padding-top: 25px;
    border-top:
        1px solid rgba(255,255,255,.13);

    display: flex;
    justify-content: space-between;

    color: #657681;
    font-size: 10px;
}


/* RESPONSIVE */

@media (max-width: 1180px) {

    .main-nav {
        display: none;
    }

    .header-actions {
        margin-left: auto;
    }

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

    .capability-card {
        border-bottom: 1px solid #dce2e5;
    }

}


@media (max-width: 850px) {

    .header-inner {
        height: 78px;
    }

    .header-actions .login-link {
        display: none;
    }

    .hero {
        min-height: 760px;
    }

    .hero-inner {
        padding-top: 150px;
    }

    .hero h1 {
        font-size: 57px;
    }

    .hero-bottom {
        grid-template-columns: 1fr 1fr;
    }

    .hero-stat {
        border-bottom:
            1px solid rgba(255,255,255,.14);
    }

    .intro-grid,
    .planning-grid,
    .engineering-grid,
    .cta-grid,
    .snowcontrol-box {
        grid-template-columns: 1fr;
        gap: 45px;
    }

    .planning-photo {
        min-height: 430px;
    }

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

    .capability-card {
        min-height: 525px;
        border-left: none !important;
        border-right: none;
    }

    .footer-inner {
        display: block;
    }

    .footer-links {
        margin-top: 35px;
        flex-wrap: wrap;
    }

}


@media (max-width: 560px) {

    .brand-name {
        font-size: 8px;
    }

    .header-button {
        display: none;
    }

    .hero h1 {
        font-size: 47px;
    }

    .hero-description {
        font-size: 16px;
    }

    .hero-buttons {
        display: block;
    }

    .hero-buttons .button {
        display: block;
        margin-bottom: 10px;
        text-align: center;
    }

    .hero-bottom {
        display: none;
    }

    .planning-content {
        padding: 70px 7%;
    }

    .footer-bottom {
        display: block;
    }

    .footer-bottom span {
        display: block;
        margin-bottom: 10px;
    }

}