css
/* =========================================
   IDEAL INTERNET
   PROJETO 01 — SITE INSTITUCIONAL
   ESTÉTICA BRANCA / PREMIUM / CLEAN
========================================= */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #ffffff;
    color: #111111;
    line-height: 1.6;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    text-decoration: none;
    color: inherit;
}

.content {
    width: 90%;
    max-width: 1180px;
    margin: 0 auto;
}


/* =========================================
   HEADER
========================================= */

.header {
    position: fixed;
    top: 0;
    left: 0;

    width: 100%;
    height: 78px;

    background: rgba(255, 255, 255, 0.92);

    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);

    border-bottom: 1px solid #eeeeee;

    z-index: 1000;
}

.header-content {
    width: 90%;
    max-width: 1180px;
    height: 100%;

    margin: 0 auto;

    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header .logo {
    display: flex;
    align-items: center;

    transform: translateX(-10px);
}

.header .logo img {
    width: 70px !important;
    max-width: 70px !important;
    height: auto !important;
}

.back-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    padding: 9px 16px;

    border: 1px solid #dedede;
    border-radius: 5px;

    color: #555555;

    font-size: 12px;
    font-weight: 500;

    transition: 0.3s ease;
}

.back-button:hover {
    color: #111111;
    background: #f6f6f6;
    border-color: #cccccc;

    transform: translateY(-1px);
}


/* =========================================
   HERO
========================================= */

.project-hero {
    min-height: 820px;

    padding: 170px 0 120px;

    display: flex;
    align-items: center;

    background:
        radial-gradient(
            circle at 80% 40%,
            rgba(83, 111, 232, 0.08),
            transparent 35%
        ),
        #ffffff;

    overflow: hidden;
}

.hero-content {
    width: 90%;
    max-width: 1180px;

    margin: 0 auto;

    display: grid;

    grid-template-columns: 0.9fr 1.1fr;

    gap: 80px;

    align-items: center;
}

.hero-text {
    max-width: 560px;
}

.project-label {
    display: block;

    margin-bottom: 25px;

    color: #536fe8;

    font-size: 10px;
    font-weight: 700;

    letter-spacing: 3px;
}

.hero-text h1 {
    margin-bottom: 28px;

    font-size: clamp(54px, 6vw, 80px);

    font-weight: 400;

    line-height: 0.98;

    letter-spacing: -4px;
}

.hero-text h1 span {
    display: block;
    color: #536fe8;
}

.hero-text p {
    max-width: 540px;

    margin-bottom: 38px;

    color: #6d6d6d;

    font-size: 15px;

    line-height: 1.85;
}

.whatsapp-button {
    display: inline-flex;

    align-items: center;
    justify-content: center;

    padding: 14px 25px;

    background: #111111;

    color: #ffffff;

    border-radius: 5px;

    font-size: 13px;
    font-weight: 600;

    transition: 0.3s ease;
}

.whatsapp-button:hover {
    background: #536fe8;

    transform: translateY(-2px);

    box-shadow:
        0 12px 30px rgba(83, 111, 232, 0.18);
}


/* =========================================
   HERO IMAGE
========================================= */

.hero-image {
    position: relative;

    display: flex;

    align-items: center;
    justify-content: center;
}

.hero-image::before {
    content: "";

    position: absolute;

    width: 480px;
    height: 480px;

    border-radius: 50%;

    border: 1px solid rgba(83, 111, 232, 0.12);

    z-index: 0;
}

.hero-image img {
    position: relative;
    z-index: 1;

    width: 100%;
    max-width: 650px;

    border: 1px solid #dddddd;
    border-radius: 7px;

    background: #ffffff;

    box-shadow:
        0 30px 70px rgba(0, 0, 0, 0.12);

    transition: 0.4s ease;
}

.hero-image img:hover {
    transform: translateY(-6px);

    box-shadow:
        0 40px 90px rgba(0, 0, 0, 0.15);
}


/* =========================================
   SECTION TITLE
========================================= */

.section-title {
    max-width: 520px;
}

.section-title > span {
    display: block;

    margin-bottom: 20px;

    color: #536fe8;

    font-size: 10px;
    font-weight: 700;

    letter-spacing: 3px;
}

.section-title h2 {
    font-size: clamp(40px, 5vw, 60px);

    font-weight: 400;

    line-height: 1.05;

    letter-spacing: -3px;
}


/* =========================================
   ABOUT PROJECT
========================================= */

.about-project {
    padding: 140px 0;

    background: #f7f7f5;
}

.about-project .content {
    display: grid;

    grid-template-columns: 0.9fr 1.1fr;

    gap: 100px;

    align-items: start;
}

.about-text {
    max-width: 650px;
}

.about-text p {
    margin-bottom: 25px;

    color: #696969;

    font-size: 15px;

    line-height: 1.9;
}

.about-text p:last-child {
    margin-bottom: 0;
}


/* =========================================
   FEATURES
========================================= */

.features {
    padding: 140px 0;

    background: #ffffff;
}

.features .section-title {
    margin-bottom: 65px;
}

.features-grid {
    display: grid;

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

    gap: 1px;

    background: #dddddd;

    border: 1px solid #dddddd;
}

.feature-card {
    min-height: 300px;

    padding: 32px;

    background: #ffffff;

    transition: 0.3s ease;
}

.feature-card:hover {
    background: #fafafa;
}

.feature-card .number {
    display: block;

    margin-bottom: 60px;

    color: #536fe8;

    font-size: 10px;
    font-weight: 700;

    letter-spacing: 2px;
}

.feature-card h3 {
    margin-bottom: 13px;

    font-size: 19px;

    font-weight: 500;
}

.feature-card p {
    color: #707070;

    font-size: 13px;

    line-height: 1.8;
}


/* =========================================
   PROCESS
========================================= */

.process {
    padding: 140px 0;

    background: #f7f7f5;
}

.process .section-title {
    margin-bottom: 65px;
}

.process-list {
    max-width: 900px;

    border-top: 1px solid #dddddd;
}

.process-item {
    display: grid;

    grid-template-columns: 70px 1fr;

    gap: 25px;

    padding: 32px 0;

    border-bottom: 1px solid #dddddd;

    transition: 0.3s ease;
}

.process-item:hover {
    padding-left: 8px;
}

.process-item > strong {
    color: #536fe8;

    font-size: 10px;
    font-weight: 700;

    letter-spacing: 2px;
}

.process-item h3 {
    margin-bottom: 8px;

    font-size: 20px;

    font-weight: 500;
}

.process-item p {
    max-width: 650px;

    color: #707070;

    font-size: 13px;

    line-height: 1.8;
}


/* =========================================
   CTA
========================================= */

.project-cta {
    padding: 150px 0;

    background:
        radial-gradient(
            circle at center,
            rgba(83, 111, 232, 0.08),
            transparent 40%
        ),
        #ffffff;

    text-align: center;

    border-top: 1px solid #eeeeee;
}

.project-cta .content {
    max-width: 850px;
}

.project-cta > .content > span {
    display: block;

    margin-bottom: 20px;

    color: #536fe8;

    font-size: 10px;
    font-weight: 700;

    letter-spacing: 3px;
}

.project-cta h2 {
    margin-bottom: 25px;

    font-size: clamp(44px, 6vw, 70px);

    font-weight: 400;

    line-height: 1;

    letter-spacing: -4px;
}

.project-cta p {
    max-width: 600px;

    margin: 0 auto 38px;

    color: #777777;

    font-size: 15px;

    line-height: 1.8;
}

.back-home {
    display: inline-block;

    margin-top: 25px;

    color: #777777;

    font-size: 12px;

    transition: 0.3s ease;
}

.back-home:hover {
    color: #111111;
}


/* =========================================
   FOOTER
========================================= */

.footer {
    padding: 32px 0;

    background: #ffffff;

    border-top: 1px solid #eeeeee;
}

.footer-content {
    width: 90%;
    max-width: 1180px;

    margin: 0 auto;

    display: flex;

    align-items: center;
    justify-content: space-between;

    gap: 30px;
}

.footer .logo {
    display: flex;
    align-items: center;
}

.footer .logo img {
    width: 70px !important;
    max-width: 70px !important;
    height: auto !important;
}

.footer p {
    color: #777777;

    font-size: 11px;
}


/* =========================================
   TABLET
========================================= */

@media (max-width: 1000px) {

    .hero-content {
        grid-template-columns: 1fr;

        gap: 70px;
    }

    .hero-text {
        max-width: 650px;
    }

    .hero-image {
        justify-content: flex-start;
    }

    .hero-image img {
        max-width: 700px;
    }

    .about-project .content {
        grid-template-columns: 1fr;

        gap: 55px;
    }

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


/* =========================================
   MOBILE
========================================= */

@media (max-width: 650px) {

    .header {
        height: 70px;
    }

    .header-content {
        width: 92%;
    }

    .header .logo {
        transform: translateX(-5px);
    }

    .header .logo img {
        width: 62px !important;
        max-width: 62px !important;
    }

    .back-button {
        padding: 8px 13px;

        font-size: 11px;
    }


    .project-hero {
        min-height: auto;

        padding: 125px 0 90px;
    }

    .hero-content {
        width: 92%;

        gap: 55px;
    }

    .hero-text h1 {
        font-size: 48px;

        letter-spacing: -3px;
    }

    .hero-text p {
        font-size: 14px;
    }

    .whatsapp-button {
        width: 100%;
    }

    .hero-image::before {
        width: 300px;
        height: 300px;
    }


    .about-project {
        padding: 100px 0;
    }

    .about-project .content {
        width: 92%;
    }

    .section-title h2 {
        font-size: 40px;

        letter-spacing: -2px;
    }


    .features {
        padding: 100px 0;
    }

    .features .content {
        width: 92%;
    }

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

    .feature-card {
        min-height: auto;

        padding: 30px;
    }

    .feature-card .number {
        margin-bottom: 35px;
    }


    .process {
        padding: 100px 0;
    }

    .process .content {
        width: 92%;
    }

    .process-item {
        grid-template-columns: 45px 1fr;

        gap: 18px;
    }


    .project-cta {
        padding: 110px 0;
    }

    .project-cta .content {
        width: 92%;
    }

    .project-cta h2 {
        font-size: 43px;

        letter-spacing: -2px;
    }


    .footer-content {
        width: 92%;

        flex-direction: column;

        text-align: center;
    }

    .footer .logo img {
        width: 65px !important;
        max-width: 65px !important;
    }
}