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

:root {
    --page-bg: linear-gradient(180deg, #dce4ec 0%, #f7f7f2 48%, #eff3f8 100%);
    --panel-bg: rgba(255, 255, 255, 0.92);
    --panel-border: rgba(33, 51, 106, 0.12);
    --chrome-bg: rgb(190, 190, 190);
    --chrome-line: rgba(33, 51, 106, 0.08);
    --ink: #21336a;
    --muted: #4b556d;
    --accent: #e0612f;
    --signal: #57bf37;
    --shadow: 0 20px 60px rgba(24, 31, 56, 0.14);
}

html {
    min-height: 100%;
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: "Bahnschrift", "Segoe UI", sans-serif;
    line-height: 1.5;
    color: var(--ink);
    background:
        linear-gradient(rgba(33, 51, 106, 0.075) 1px, transparent 1px),
        linear-gradient(90deg, rgba(33, 51, 106, 0.075) 1px, transparent 1px),
        #cacaca;
    background-size: 24px 24px, 24px 24px, auto;
    overflow-x: hidden;
}

body.theme-day {
    background:
        linear-gradient(rgba(33, 51, 106, 0.075) 1px, transparent 1px),
        linear-gradient(90deg, rgba(33, 51, 106, 0.075) 1px, transparent 1px),
        #cacaca;
    background-size: 24px 24px, 24px 24px, auto;
}

body.theme-night {
    background:
        linear-gradient(rgba(188, 208, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(188, 208, 255, 0.035) 1px, transparent 1px),
        linear-gradient(180deg, #1a2238 0%, #222b3f 45%, #2d3342 100%);
    background-size: 26px 26px, 26px 26px, auto;
    color: #eef3ff;
}

a {
    color: inherit;
}

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

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.container {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    height: 72px;
    background: var(--chrome-bg);
    border-bottom: 1px solid var(--chrome-line);
}

.navbar .container {
    height: 100%;
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo {
    font-size: 1.45rem;
    font-weight: 800;
    text-decoration: none;
    letter-spacing: 0.04em;
    margin-right: auto;
}

.logo span {
    color: inherit;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 10px;
}

.nav-menu a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 16px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 700;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-menu a:hover,
.nav-menu a.is-active {
    background: rgba(33, 51, 106, 0.08);
    color: var(--accent);
}

.menu-toggle {
    display: none;
    border: 0;
    background: transparent;
    font-size: 1.75rem;
    line-height: 1;
    cursor: pointer;
}

.hero {
    flex: 1 0 auto;
    height: calc(100vh - 144px);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 0;
}

.hero-stage {
    position: relative;
    width: min(100vw, calc((100vh - 144px) * 1.7777778));
    height: min(calc(100vh - 144px), calc(100vw / 1.7777778));
    margin: 0 auto;
    background: transparent;
}

body.theme-night .hero-stage {
    background: transparent;
}

.scene-layer {
    position: absolute;
    display: block;
    max-width: none;
    user-select: none;
    -webkit-user-drag: none;
}

.billboard-shell {
    position: absolute;
    left: 50%;
    top: 10.1852%;
    width: 44.6%;
    height: 89.8148%;
    transform: translateX(-50%);
}

.billboard-frame {
    inset: 0;
    width: 100%;
    height: 100%;
}

.billboard-display {
    position: absolute;
    left: 6.3%;
    top: 2.9%;
    width: 87.2%;
    height: 24.4%;
    padding: 0.4%;
    pointer-events: none;
    overflow: hidden;
    --billboard-scale: 1;
    isolation: isolate;
}

.billboard-display::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: 0;
    background:
        repeating-linear-gradient(
            90deg,
            rgba(18, 31, 76, 0.14) 0,
            rgba(18, 31, 76, 0.14) 2px,
            rgba(255, 255, 255, 0) 2px,
            rgba(255, 255, 255, 0) 34px
        );
    transform-origin: center center;
    z-index: 2;
}

.billboard-inner {
    position: relative;
    width: 100%;
    height: 100%;
    padding: clamp(6px, 0.8vw, 12px) clamp(8px, 0.9vw, 14px);
    background: transparent;
    border: 0;
    box-shadow: none;
    transform-origin: center center;
}

.billboard-content {
    position: absolute;
    left: 50%;
    top: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    transform: translateX(-50%) scale(var(--billboard-scale));
    transform-origin: center top;
}

.billboard-display.is-transitioning::before {
    animation: lamellaOverlay 620ms ease-in-out;
}

.billboard-display.is-transitioning .billboard-inner {
    animation: lamellaContent 620ms cubic-bezier(0.4, 0, 0.2, 1);
}

.billboard-kicker {
    font-size: clamp(1rem, 2.7vw, 3.2rem);
    line-height: 0.92;
    font-weight: 900;
    letter-spacing: 0.03em;
}

.billboard-title,
.billboard-subtitle {
    font-weight: 900;
    line-height: 0.96;
}

.billboard-title {
    margin-top: 0.1em;
    font-size: clamp(0.7rem, 1.9vw, 2.2rem);
}

.billboard-subtitle {
    margin-top: 0.12em;
    font-size: clamp(0.65rem, 1.55vw, 1.8rem);
}

.billboard-accent {
    margin-top: clamp(4px, 0.7vw, 10px);
    font-size: clamp(0.42rem, 0.8vw, 0.82rem);
    font-weight: 700;
    color: var(--accent);
}

.billboard-contacts {
    margin-top: clamp(4px, 0.8vw, 10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15em;
}

.billboard-contacts.is-hidden {
    display: none;
}

.billboard-accent.is-hidden,
.billboard-phone.is-hidden {
    display: none;
}

.billboard-phone {
    font-size: clamp(0.55rem, 1.45vw, 1.45rem);
    font-weight: 900;
    text-decoration: none;
    color: var(--signal);
}

.billboard-email {
    font-size: clamp(0.42rem, 1.05vw, 1.02rem);
    font-weight: 800;
    text-decoration: none;
    color: var(--accent);
}

.billboard-display.is-home {
    top: 6.4%;
    height: 32.5%;
}

.billboard-display.is-home .billboard-inner {
    padding-top: clamp(14px, 1.8vw, 28px);
}

.billboard-display.is-home .billboard-kicker {
    font-size: clamp(1.95rem, 5.3vw, 6.3rem);
}

.billboard-display.is-home .billboard-title {
    font-size: clamp(1.02rem, 2.8vw, 3.35rem);
    white-space: nowrap;
}

.billboard-display.is-home .billboard-subtitle {
    font-size: clamp(1.02rem, 2.8vw, 3.35rem);
}

.billboard-display.is-home .billboard-phone {
    font-size: clamp(0.96rem, 2.6vw, 2.8rem);
}

.billboard-display.is-home .billboard-email {
    font-size: clamp(0.72rem, 1.9vw, 1.8rem);
}

.billboard-display.is-home .billboard-kicker,
.billboard-display.is-home .billboard-title,
.billboard-display.is-home .billboard-subtitle {
    flex: 0 0 auto;
}

.billboard-display:not(.is-home) {
    top: 7.2%;
    height: 27%;
}

.billboard-display:not(.is-home) .billboard-inner {
    padding-top: clamp(10px, 1.2vw, 18px);
}

.billboard-display:not(.is-home) .billboard-kicker {
    font-size: clamp(1.55rem, 4.2vw, 5rem);
    line-height: 0.94;
}

.billboard-display:not(.is-home) .billboard-title {
    margin-top: 0.1em;
    font-size: clamp(1.05rem, 2.9vw, 3.45rem);
}

.billboard-display:not(.is-home) .billboard-subtitle {
    margin-top: 0.12em;
    font-size: clamp(1.05rem, 2.9vw, 3.45rem);
}

.billboard-display:not(.is-home) .billboard-accent {
    margin-top: clamp(6px, 1vw, 14px);
    font-size: clamp(0.6rem, 1.35vw, 1.45rem);
    line-height: 1.1;
}

@keyframes lamellaOverlay {
    0% {
        opacity: 0;
        transform: scaleX(1) skewY(0deg);
    }
    18% {
        opacity: 0.5;
        transform: scaleX(0.92) skewY(-2deg);
    }
    50% {
        opacity: 0.72;
        transform: scaleX(0.08) skewY(0deg);
    }
    82% {
        opacity: 0.42;
        transform: scaleX(0.9) skewY(2deg);
    }
    100% {
        opacity: 0;
        transform: scaleX(1) skewY(0deg);
    }
}

@keyframes lamellaContent {
    0% {
        opacity: 1;
        transform: scaleX(1);
        filter: blur(0);
    }
    28% {
        opacity: 0.55;
        transform: scaleX(0.42);
        filter: blur(1px);
    }
    50% {
        opacity: 0.08;
        transform: scaleX(0.04);
        filter: blur(2px);
    }
    72% {
        opacity: 0.5;
        transform: scaleX(0.5);
        filter: blur(0.8px);
    }
    100% {
        opacity: 1;
        transform: scaleX(1);
        filter: blur(0);
    }
}

.scene-footer {
    flex: 0 0 72px;
    height: 72px;
    position: relative;
    background: var(--chrome-bg);
}

body.theme-night .navbar,
body.theme-night .scene-footer {
    background: #30394b;
    border-color: rgba(188, 208, 255, 0.1);
}

body.theme-night .scene-footer::before {
    background: rgba(188, 208, 255, 0.1);
}

body.theme-night .logo,
body.theme-night .theme-toggle,
body.theme-night .scene-footer-copy,
body.theme-night .nav-menu a {
    color: #eef3ff;
}

body.theme-night .billboard-kicker,
body.theme-night .billboard-title,
body.theme-night .billboard-subtitle {
    color: var(--ink);
    opacity: 0.88;
    mix-blend-mode: multiply;
}

body.theme-night .billboard-accent {
    color: rgba(201, 152, 134, 0.8);
}

body.theme-night .billboard-phone {
    color: rgba(143, 194, 128, 0.82);
}

body.theme-night .billboard-email {
    color: rgba(207, 164, 139, 0.8);
}

body.theme-night .nav-menu a:hover,
body.theme-night .nav-menu a.is-active {
    background: rgba(188, 208, 255, 0.12);
    color: #ffffff;
}

.scene-footer::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 1px;
    background: var(--chrome-line);
}

.scene-footer-copy {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: 0.04em;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, calc(-50% - 4px));
}

.mobile-panel {
    display: none;
}

@media (max-width: 960px) {
}

@media (max-width: 1440px) and (min-width: 1201px) {
    .billboard-display {
        --billboard-scale: 0.96;
    }

    .billboard-display.is-home {
        --billboard-scale: 0.92;
    }
}

@media (max-width: 1200px) and (min-width: 1025px) {
    .billboard-display {
        --billboard-scale: 0.9;
    }

    .billboard-display.is-home {
        --billboard-scale: 0.86;
    }
}

@media (max-width: 1024px) and (min-width: 901px) {
    .billboard-display {
        --billboard-scale: 0.84;
    }

    .billboard-display.is-home {
        --billboard-scale: 0.8;
    }
}

@media (max-width: 900px) and (min-width: 769px) {
    .billboard-display {
        --billboard-scale: 0.78;
    }

    .billboard-display.is-home {
        --billboard-scale: 0.74;
    }

    .billboard-display.is-home .billboard-kicker {
        font-size: clamp(1.7rem, 5vw, 5.1rem);
    }

    .billboard-display.is-home .billboard-title,
    .billboard-display.is-home .billboard-subtitle {
        font-size: clamp(0.96rem, 2.6vw, 2.9rem);
    }

    .billboard-display.is-home .billboard-phone {
        font-size: clamp(0.84rem, 2.2vw, 2.35rem);
    }

    .billboard-display.is-home .billboard-email {
        font-size: clamp(0.62rem, 1.6vw, 1.45rem);
    }

    .billboard-display.is-home .billboard-contacts {
        margin-top: clamp(2px, 0.35vw, 5px);
        gap: 0.06em;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .theme-toggle {
        order: 2;
        min-height: 34px;
        padding: 0 12px;
        font-size: 0.9rem;
    }

    .nav-menu {
        position: absolute;
        left: 16px;
        right: 16px;
        top: calc(100% + 10px);
        padding: 14px;
        flex-direction: column;
        gap: 6px;
        background: rgba(255, 255, 255, 0.97);
        border: 1px solid rgba(33, 51, 106, 0.08);
        border-radius: 20px;
        box-shadow: var(--shadow);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
        transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
    }

    .nav-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    body.theme-night .nav-menu {
        background: rgba(34, 43, 63, 0.98);
        border-color: rgba(188, 208, 255, 0.12);
        box-shadow: 0 14px 28px rgba(10, 16, 28, 0.35);
    }

    .nav-menu a {
        justify-content: center;
    }

    .hero-stage {
        width: 100%;
        height: auto;
        aspect-ratio: auto;
        display: flex;
        align-items: flex-end;
        justify-content: center;
        padding: 16px 0 8px;
    }

    .billboard-shell {
        display: none;
    }

    .hero {
        height: auto;
        min-height: calc(100vh - 144px);
        justify-content: flex-start;
        padding-bottom: 16px;
    }

    .mobile-panel {
        display: block;
        width: min(82vw, 330px);
        margin: 8px auto 0;
        min-height: 450px;
        aspect-ratio: 2 / 3;
        padding: 28px 20px 30px;
        position: relative;
        border: 0;
        border-radius: 10px;
        background-color: transparent;
        background-position: center center;
        background-size: 100% 100%;
        background-repeat: no-repeat;
        box-shadow: 0 10px 22px rgba(24, 31, 56, 0.1);
        text-align: center;
        display: flex;
        flex-direction: column;
        justify-content: center;
        transition: opacity 220ms ease, transform 260ms ease, filter 260ms ease;
        isolation: isolate;
        overflow: hidden;
    }

    .mobile-panel::after {
        content: "";
        position: absolute;
        left: 8%;
        right: 8%;
        top: 4%;
        bottom: 8%;
        border-radius: 8px;
        background: rgba(255, 255, 255, 0.14);
        pointer-events: none;
        z-index: 0;
    }

    .mobile-panel.is-home::after {
        background: rgba(255, 255, 255, 0.28);
    }

    .mobile-panel > * {
        position: relative;
        z-index: 1;
    }

    .mobile-panel > .mobile-kicker,
    .mobile-panel > .mobile-title,
    .mobile-panel > .mobile-subtitle,
    .mobile-panel > .mobile-accent,
    .mobile-panel > .mobile-contacts {
        margin-left: 8%;
        margin-right: 8%;
    }

    .mobile-panel.is-home > .mobile-kicker,
    .mobile-panel.is-home > .mobile-title,
    .mobile-panel.is-home > .mobile-subtitle,
    .mobile-panel.is-home > .mobile-accent,
    .mobile-panel.is-home > .mobile-contacts {
        margin-left: 11%;
        margin-right: 11%;
    }

    body.theme-night .mobile-kicker,
    body.theme-night .mobile-title,
    body.theme-night .mobile-subtitle {
        color: var(--ink);
        opacity: unset;
        mix-blend-mode: unset;
    }

    body.theme-night .mobile-accent {
        color: var(--accent);
    }

    body.theme-night .mobile-phone {
        color: #5e9f48;
        text-shadow: 0 1px 0 rgba(255, 255, 255, 0.22);
    }

    body.theme-night .mobile-email {
        color: #a86d4f;
        text-shadow: 0 1px 0 rgba(255, 255, 255, 0.18);
    }

    .mobile-panel.is-transitioning {
        opacity: 0.4;
        transform: translateX(10px);
        filter: blur(1px);
    }

    .mobile-kicker {
        font-size: clamp(1.6rem, 7vw, 2.35rem);
        line-height: 0.92;
        font-weight: 900;
        letter-spacing: 0.02em;
        color: var(--ink);
        text-shadow: 0 1px 0 rgba(255, 255, 255, 0.25);
    }

    .mobile-title,
    .mobile-subtitle {
        margin-top: 0.12em;
        font-weight: 900;
        line-height: 0.95;
        font-size: clamp(1.02rem, 4.9vw, 1.6rem);
        color: var(--ink);
        text-shadow: 0 1px 0 rgba(255, 255, 255, 0.2);
    }

    .mobile-panel.is-home .mobile-kicker {
        font-size: clamp(1.7rem, 7.4vw, 2.5rem);
    }

    .mobile-panel.is-home .mobile-title,
    .mobile-panel.is-home .mobile-subtitle {
        font-size: clamp(1.05rem, 5.1vw, 1.7rem);
    }

    .mobile-accent {
        margin-top: 10px;
        font-size: clamp(0.74rem, 3.2vw, 0.92rem);
        line-height: 1.2;
        color: var(--accent);
        font-weight: 700;
    }

    .mobile-contacts {
        margin-top: 14px;
        display: flex;
        flex-direction: column;
        gap: 6px;
        align-items: center;
    }

    .mobile-contacts.is-hidden {
        display: none;
    }

    .mobile-phone,
    .mobile-email {
        text-decoration: none;
        font-weight: 800;
    }

    .mobile-phone {
        font-size: clamp(0.94rem, 4vw, 1.12rem);
        color: var(--signal);
    }

    .mobile-email {
        font-size: clamp(0.8rem, 3.4vw, 0.94rem);
        color: var(--accent);
    }

    .scene-footer {
        flex-basis: 56px;
        height: 56px;
    }

    .scene-footer-copy {
        font-size: 0.8rem;
    }
}

@media (max-width: 560px) {
    .container {
        width: min(1180px, calc(100% - 20px));
    }

    .billboard-display {
        left: 40.8%;
        top: 7.1%;
        width: 41.3%;
        height: 43.6%;
    }

    .billboard-inner {
        padding: 8px;
    }

    .billboard-contacts {
        gap: 1px;
    }
}