---

/* =========================================================
   НА «ТЫ» С ТЕХНОЛОГИЯМИ
   Стиль: как на афише
   Цвета:
   #D9FF35 — кислотный лайм
   #B99CFF — сиреневый
   #FF8FC7 — розовый
   #111111 — чёрный
   #FFFFFF — белый
   ========================================================= */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;

    background:
        radial-gradient(circle at 4% 8%, rgba(217,255,53,.25) 0 80px, transparent 82px),
        radial-gradient(circle at 96% 15%, rgba(185,156,255,.25) 0 100px, transparent 102px),
        #ffffff;

    color: #111111;

    font-family:
        "Arial",
        "Helvetica Neue",
        sans-serif;

    overflow-x: hidden;
}


/* =========================================================
   ВЕРХНЯЯ ПАНЕЛЬ
   ========================================================= */

header {
    min-height: 76px;

    background: #ffffff;

    border-bottom: 3px solid #111111;

    padding: 0 38px;

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

    position: relative;
    z-index: 10;
}

header::before {
    content: "";
    position: absolute;

    left: 0;
    top: -4px;

    width: 180px;
    height: 10px;

    background: #D9FF35;

    transform: rotate(-2deg);
}

header b {
    font-size: 15px;
    font-weight: 900;

    letter-spacing: .06em;

    text-transform: uppercase;
}

header span {
    font-size: 13px;
    font-weight: 800;

    letter-spacing: .08em;
}

header button,
footer button {
    border: 3px solid #111111;

    background: #ffffff;

    color: #111111;

    padding: 12px 18px;

    font-size: 14px;
    font-weight: 900;

    cursor: pointer;

    transition:
        transform .15s ease,
        background .15s ease,
        box-shadow .15s ease;
}

header button:hover,
footer button:hover {
    background: #D9FF35;

    transform: translate(-2px, -2px);

    box-shadow: 5px 5px 0 #111111;
}

kbd {
    background: #111111;
    color: #ffffff;

    padding: 3px 7px;

    margin-left: 5px;

    font-size: 11px;
}


/* =========================================================
   ОСНОВНОЙ ЭКРАН
   ========================================================= */

section {
    max-width: 1180px;

    margin: 0 auto;

    padding: 55px 40px 120px;

    position: relative;
}


/* декоративные элементы */

section::before {
    content: "✦";

    position: fixed;

    left: 25px;
    top: 130px;

    font-size: 45px;

    color: #B99CFF;

    transform: rotate(-12deg);

    pointer-events: none;
}

section::after {
    content: "♡";

    position: fixed;

    right: 35px;
    bottom: 110px;

    font-size: 55px;

    color: #FF8FC7;

    transform: rotate(12deg);

    pointer-events: none;
}


/* =========================================================
   ЗАГОЛОВОК
   ========================================================= */

.head {
    position: relative;

    margin-bottom: 42px;

    padding: 20px 28px;

    border-left: none;

    background: #D9FF35;

    transform: rotate(-1deg);

    box-shadow: 8px 8px 0 #111111;
}

.head::before {
    content: "";

    position: absolute;

    left: -15px;
    top: 12px;

    width: 70px;
    height: 12px;

    background: #B99CFF;

    transform: rotate(-8deg);

    z-index: -1;
}

.head::after {
    content: "✦";

    position: absolute;

    right: 22px;
    top: -22px;

    font-size: 38px;

    color: #111111;

    transform: rotate(12deg);
}

.head small {
    display: block;

    margin-bottom: 7px;

    font-size: 12px;

    font-weight: 900;

    letter-spacing: .15em;

    color: #111111;
}

.head h1 {
    margin: 0;

    font-size: clamp(38px, 6vw, 68px);

    line-height: .95;

    font-weight: 1000;

    letter-spacing: -.055em;

    text-transform: uppercase;
}


/* =========================================================
   ПЕРВЫЙ ЭКРАН
   ========================================================= */

.hero {
    display: grid;

    grid-template-columns: 1.05fr .95fr;

    gap: 55px;

    align-items: center;
}

.hero h1 {
    margin: 0 0 30px;

    font-size: clamp(65px, 9vw, 110px);

    line-height: .78;

    letter-spacing: -.075em;

    font-weight: 1000;

    text-transform: uppercase;
}

.hero h1 i {
    display: inline-block;

    color: #B99CFF;

    font-style: normal;

    text-shadow:
        3px 3px 0 #111111;

    transform: rotate(-2deg);
}

.hero p {
    max-width: 620px;

    font-size: 21px;

    line-height: 1.45;

    font-weight: 500;
}

.hero p::first-letter {
    font-weight: 900;
}


/* =========================================================
   ФОТО / ЗАГЛУШКИ
   ========================================================= */

.photo {
    min-height: 390px;

    background:
        linear-gradient(
            135deg,
            rgba(217,255,53,.8),
            rgba(185,156,255,.75),
            rgba(255,143,199,.7)
        );

    border: 4px solid #111111;

    display: flex;

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

    text-align: center;

    flex-direction: column;

    font-size: 25px;

    font-weight: 1000;

    position: relative;

    transform: rotate(2deg);

    box-shadow: 10px 10px 0 #111111;
}

.photo::before {
    content: "";

    position: absolute;

    inset: 13px;

    border: 3px dashed #111111;

    pointer-events: none;
}

.photo small {
    max-width: 270px;

    margin-top: 15px;

    font-size: 13px;

    line-height: 1.4;

    font-weight: 700;
}

.photo.big {
    min-height: 350px;
}


/* =========================================================
   КАРТОЧКИ
   ========================================================= */

.cards {
    display: grid;

    grid-template-columns: repeat(3, 1fr);

    gap: 20px;
}

.card {
    min-height: 145px;

    padding: 23px;

    background: #ffffff;

    border: 3px solid #111111;

    position: relative;

    display: flex;

    flex-direction: column;

    justify-content: space-between;

    text-align: left;

    cursor: pointer;

    transition:
        transform .15s ease,
        box-shadow .15s ease;
}

.card:nth-child(2n) {
    transform: rotate(.7deg);
}

.card:nth-child(3n) {
    transform: rotate(-.6deg);
}

.card:hover {
    transform: translate(-3px, -5px) rotate(-1deg);

    box-shadow: 8px 8px 0 #111111;
}

.card b {
    font-size: 13px;

    font-weight: 1000;

    color: #7b4dff;
}

.card span {
    font-size: 20px;

    line-height: 1.1;

    font-weight: 900;
}

.card.lime {
    background: #D9FF35;
}

.card.lime b {
    color: #111111;
}


/* =========================================================
   ДВЕ КОЛОНКИ
   ========================================================= */

.two {
    display: grid;

    grid-template-columns: 1fr 1fr;

    gap: 45px;

    align-items: center;
}

.two h2 {
    display: inline-block;

    margin: 0 0 12px;

    padding: 7px 12px;

    background: #B99CFF;

    border: 2px solid #111111;

    font-size: 25px;

    transform: rotate(-1deg);
}

.two p {
    font-size: 20px;

    line-height: 1.55;

    font-weight: 600;

    margin-bottom: 30px;
}


/* =========================================================
   ВОПРОСЫ
   ========================================================= */

.q {
    margin-top: 30px;

    padding: 20px 24px;

    background: #FF8FC7;

    border: 3px solid #111111;

    font-size: 19px;

    font-weight: 900;

    transform: rotate(-.6deg);

    box-shadow: 6px 6px 0 #111111;
}


/* =========================================================
   ANDROID / IOS
   ========================================================= */

.os {
    display: grid;

    grid-template-columns: 1fr 1fr;

    gap: 25px;
}

.os button {
    min-height: 220px;

    padding: 35px;

    border: 3px solid #111111;

    background: #D9FF35;

    text-align: left;

    cursor: pointer;

    transition: .15s;

    box-shadow: 7px 7px 0 #111111;
}

.os button:nth-child(2) {
    background: #B99CFF;
}

.os button:hover {
    transform: translate(-3px, -3px);

    box-shadow: 11px 11px 0 #111111;
}

.os strong {
    display: block;

    margin-bottom: 15px;

    font-size: 42px;

    font-weight: 1000;
}

.os small {
    font-size: 16px;

    font-weight: 700;
}


/* =========================================================
   ЖЕСТЫ
   ========================================================= */

.gestures {
    display: grid;

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

    gap: 18px;
}

.gestures .card {
    text-align: center;

    align-items: center;

    justify-content: center;

    min-height: 180px;
}

.gestures .card strong {
    display: block;

    font-size: 48px;

    margin-bottom: 20px;
}

.gestures .card:nth-child(1) {
    background: #D9FF35;
}

.gestures .card:nth-child(2) {
    background: #B99CFF;
}

.gestures .card:nth-child(3) {
    background: #FF8FC7;
}

.gestures .card:nth-child(4) {
    background: #ffffff;
}


/* =========================================================
   СИТУАЦИИ / ИГРЫ
   ========================================================= */

.case {
    max-width: 850px;

    padding: 38px;

    background: #111111;

    color: #ffffff;

    border: 4px solid #111111;

    position: relative;

    box-shadow: 10px 10px 0 #D9FF35;
}

.case::after {
    content: "✦";

    position: absolute;

    right: 20px;
    top: 15px;

    color: #FF8FC7;

    font-size: 35px;
}

.case small {
    color: #D9FF35;

    font-weight: 1000;

    letter-spacing: .14em;
}

.case h2 {
    font-size: 34px;

    line-height: 1.05;

    margin: 15px 0 25px;
}

.case button {
    padding: 15px 18px;

    margin: 5px;

    border: 3px solid #111111;

    background: #ffffff;

    color: #111111;

    font-size: 15px;

    font-weight: 900;

    cursor: pointer;

    transition: .15s;
}

.case button:hover {
    background: #FF8FC7;

    transform: rotate(-1deg);
}


/* =========================================================
   ЧЕК-ЛИСТ
   ========================================================= */

.check {
    display: grid;

    grid-template-columns: 1fr 1fr;

    gap: 14px;
}

.check button {
    padding: 19px;

    background: #ffffff;

    border: 3px solid #111111;

    text-align: left;

    font-size: 17px;

    font-weight: 800;

    cursor: pointer;

    transition: .15s;
}

.check button:hover {
    background: #B99CFF;
}

.check button.lime {
    background: #D9FF35;
}

.check button b {
    margin-right: 8px;

    font-size: 20px;
}


/* =========================================================
   УВЕДОМЛЕНИЯ
   ========================================================= */

.notice {
    margin-top: 25px;

    padding: 18px 22px;

    background: #ffffff;

    border: 3px solid #111111;

    border-left: 12px solid #D9FF35;

    font-size: 18px;

    font-weight: 700;

    box-shadow: 5px 5px 0 #B99CFF;
}


/* =========================================================
   ФИНАЛ
   ========================================================= */

.finish {
    text-align: center;
}

.finish > div:first-child {
    width: 95px;
    height: 95px;

    margin: 0 auto 25px;

    background: #D9FF35;

    border: 4px solid #111111;

    border-radius: 50%;

    display: flex;

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

    font-size: 60px;

    font-weight: 1000;

    transform: rotate(-7deg);

    box-shadow: 7px 7px 0 #111111;
}

.finish h2 {
    max-width: 800px;

    margin: 0 auto 35px;

    font-size: 42px;

    line-height: 1;
}


/* =========================================================
   НИЖНЯЯ НАВИГАЦИЯ
   ========================================================= */

footer {
    position: fixed;

    bottom: 0;
    left: 0;
    right: 0;

    height: 76px;

    background: #ffffff;

    border-top: 3px solid #111111;

    display: flex;

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

    gap: 35px;

    z-index: 10;
}

footer strong {
    min-width: 75px;

    text-align: center;

    font-size: 15px;

    font-weight: 1000;
}


/* =========================================================
   ПАНЕЛЬ ПРЕПОДАВАТЕЛЯ
   ========================================================= */

#panel {
    position: fixed;

    right: 0;
    top: 0;
    bottom: 0;

    width: min(440px, 90vw);

    background: #ffffff;

    border-left: 4px solid #111111;

    z-index: 50;

    padding: 38px;

    transform: translateX(105%);

    transition: .25s ease;

    overflow-y: auto;

    box-shadow: -12px 0 0 #D9FF35;
}

#panel.open {
    transform: translateX(0);
}

#panel > button {
    position: absolute;

    right: 18px;
    top: 12px;

    width: 40px;
    height: 40px;

    border: 3px solid #111111;

    background: #FF8FC7;

    font-size: 25px;

    font-weight: 900;

    cursor: pointer;
}

#panel h2 {
    max-width: 330px;

    font-size: 30px;

    line-height: 1;
}

#panel hr {
    border: 0;

    border-top: 3px solid #111111;

    margin: 25px 0;
}

#panel b {
    font-size: 13px;

    text-transform: uppercase;

    letter-spacing: .1em;
}

#panel p {
    line-height: 1.55;

    font-size: 16px;
}


/* =========================================================
   АДАПТАЦИЯ ПОД НОУТБУК / ТЕЛЕФОН
   ========================================================= */

@media (max-width: 850px) {

    header {
        padding: 0 15px;
    }

    header span {
        display: none;
    }

    section {
        padding: 35px 20px 110px;
    }

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

    .hero h1 {
        font-size: 72px;
    }

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

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

    .photo {
        min-height: 280px;
    }

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


@media (max-width: 550px) {

    .cards,
    .os,
    .gestures {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 58px;
    }

    .head h1 {
        font-size: 38px;
    }

    footer {
        gap: 10px;
    }

    footer button {
        padding: 10px;
    }
}