/*
 * DANDBUYU — Dark product experience
 * A restrained, cinematic interface built around content and devices.
 */

:root {
    --bg-primary: #000000;
    --bg-secondary: #080808;
    --bg-elevated: #111113;
    --panel: #151517;
    --panel-hover: #1b1b1e;
    --accent-primary: #2997ff;
    --accent-secondary: #bf5af2;
    --accent-tertiary: #30d158;
    --text-primary: #f5f5f7;
    --text-secondary: #a1a1a6;
    --text-muted: #6e6e73;
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-medium: rgba(255, 255, 255, 0.14);
    --font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    --font-serif: 'Songti SC', 'STSong', Georgia, serif;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 34px;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

::selection {
    color: #fff;
    background: rgba(41, 151, 255, 0.7);
}

html {
    scroll-padding-top: 68px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    letter-spacing: -0.01em;
}

body::before,
body::after {
    display: none;
}

#particle-canvas {
    display: none;
}

.page-wrapper {
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.container {
    width: min(calc(100% - 48px), 1120px);
    max-width: none;
    margin-inline: auto;
    padding: 0;
}

/* Navigation */
.navbar {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    width: 100%;
    height: 52px;
    padding: 0 max(24px, calc((100vw - 1120px) / 2));
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(18, 18, 20, 0.66);
    border: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 0;
    box-shadow: none;
    backdrop-filter: saturate(180%) blur(22px);
    -webkit-backdrop-filter: saturate(180%) blur(22px);
    transform: none;
}

.navbar::before {
    display: none;
}

.navbar.scrolled {
    top: 0;
    height: 48px;
    padding: 0 max(24px, calc((100vw - 1120px) / 2));
    background: rgba(18, 18, 20, 0.82);
    border-bottom-color: rgba(255, 255, 255, 0.08);
}

.navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    color: var(--text-primary);
    text-decoration: none;
}

.brand-mark {
    position: relative;
    display: grid;
    place-items: center;
    width: 27px;
    height: 27px;
    flex: 0 0 27px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 50%;
    background: linear-gradient(145deg, #26262a, #0d0d0f);
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.68rem;
    font-weight: 700;
    box-shadow: inset 0 1px rgba(255, 255, 255, 0.12), 0 3px 12px rgba(0, 0, 0, 0.25);
}

.brand-mark::after {
    content: '';
    position: absolute;
    top: 3px;
    right: 5px;
    width: 4px;
    height: 2px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: rotate(-28deg);
}

.navbar-brand-text {
    font-size: 0.86rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.navbar-links {
    position: absolute;
    left: 50%;
    display: flex;
    align-items: center;
    gap: 34px;
    transform: translateX(-50%);
}

.navbar-links a {
    position: relative;
    color: rgba(245, 245, 247, 0.72);
    text-decoration: none;
    font-size: 0.73rem;
    font-weight: 400;
    letter-spacing: 0;
    transition: color 180ms ease;
}

.navbar-links a::after {
    display: none;
}

.navbar-links a:hover {
    color: #fff;
}

.navbar-action {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 0 13px;
    border: 0;
    border-radius: 999px;
    background: #0071e3;
    color: #fff;
    text-decoration: none;
    font-size: 0.7rem;
    font-weight: 500;
    transition: background 180ms ease, transform 180ms ease;
}

.navbar-action:hover {
    background: #0077ed;
    transform: scale(1.02);
}

/* Hero */
.hero {
    position: relative;
    min-height: auto;
    padding: 154px 0 88px;
    overflow: hidden;
    text-align: center;
    background:
        radial-gradient(ellipse at 50% 47%, rgba(29, 40, 65, 0.26), transparent 38%),
        #000;
}

.hero::before {
    display: none;
}

.hero-glow {
    position: absolute;
    pointer-events: none;
    border-radius: 50%;
    filter: blur(110px);
    opacity: 0.36;
}

.hero-glow--blue {
    top: 130px;
    left: 12%;
    width: 380px;
    height: 300px;
    background: rgba(0, 113, 227, 0.24);
}

.hero-glow--violet {
    top: 280px;
    right: 9%;
    width: 330px;
    height: 270px;
    background: rgba(125, 72, 195, 0.2);
}

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

.hero-copy {
    position: relative;
    z-index: 2;
    max-width: 1040px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    width: auto;
    margin: 0 0 18px;
    padding: 0;
    border: 0;
    background: none;
    color: #f5f5f7;
    font-size: clamp(1rem, 1.6vw, 1.22rem);
    font-weight: 600;
    letter-spacing: -0.025em;
}

.hero-title {
    margin: 0;
    background: none;
    -webkit-text-fill-color: initial;
    color: var(--text-primary);
    font-size: clamp(3.6rem, 7.4vw, 6.7rem);
    font-weight: 700;
    line-height: 0.98;
    letter-spacing: -0.074em;
    animation: none;
}

.hero-title span {
    display: inline-block;
    margin-top: 9px;
    background: linear-gradient(100deg, #f5f5f7 10%, #b9c9e0 48%, #9c8ec4 87%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}

.hero-intro {
    max-width: 720px;
    margin: 31px auto 0;
    color: var(--text-secondary);
    font-size: clamp(1.04rem, 1.8vw, 1.32rem);
    font-weight: 400;
    line-height: 1.65;
    letter-spacing: -0.025em;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    margin-top: 27px;
}

.primary-action,
.secondary-action {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    min-height: auto;
    padding: 0;
    border: 0;
    background: none;
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: -0.02em;
    box-shadow: none;
    transition: color 180ms ease;
}

.primary-action::before {
    display: none;
}

.primary-action i,
.secondary-action i {
    font-size: 0.63rem;
    transition: transform 180ms ease;
}

.primary-action:hover,
.secondary-action:hover {
    color: #53a9ff;
    transform: none;
}

.primary-action:hover i,
.secondary-action:hover i {
    transform: translateX(3px);
}

.hero-platforms {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 34px;
}

.hero-platforms > span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 12px;
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);
    color: rgba(245, 245, 247, 0.62);
    font-size: 0.7rem;
    font-weight: 500;
    white-space: nowrap;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.hero-platforms i {
    color: rgba(255, 255, 255, 0.84);
    font-size: 0.82rem;
}

.product-showcase {
    position: relative;
    max-width: 990px;
    margin: 96px auto 0;
}

.product-halo {
    position: absolute;
    left: 50%;
    bottom: 3%;
    width: 76%;
    height: 46%;
    border-radius: 50%;
    background: radial-gradient(ellipse, rgba(53, 124, 246, 0.25), rgba(110, 73, 183, 0.1) 42%, transparent 72%);
    filter: blur(45px);
    transform: translateX(-50%);
    pointer-events: none;
}

.product-frame {
    position: relative;
    z-index: 1;
    display: grid;
    place-items: center;
    min-height: 570px;
    padding: 18px 34px 0;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 38px;
    background:
        radial-gradient(circle at 50% 76%, rgba(50, 94, 172, 0.18), transparent 42%),
        linear-gradient(160deg, rgba(27, 27, 31, 0.92), rgba(8, 8, 10, 0.96));
    box-shadow:
        inset 0 1px rgba(255, 255, 255, 0.08),
        0 55px 110px rgba(0, 0, 0, 0.52);
}

.product-frame::before {
    content: '';
    position: absolute;
    inset: 0 0 auto;
    height: 46%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), transparent);
    pointer-events: none;
}

.product-frame img {
    position: relative;
    z-index: 1;
    display: block;
    width: min(100%, 900px);
    height: auto;
    filter: saturate(0.95) contrast(1.03) drop-shadow(0 32px 34px rgba(0, 0, 0, 0.66));
    transition: transform 700ms var(--ease-out), filter 700ms ease;
}

.product-frame:hover img {
    transform: translateY(-7px) scale(1.012);
    filter: saturate(1.02) contrast(1.03) drop-shadow(0 38px 38px rgba(0, 0, 0, 0.72));
}

.product-caption {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding: 16px 8px 0;
    color: var(--text-muted);
    font-size: 0.72rem;
    letter-spacing: -0.01em;
}

.hero-description {
    max-width: 720px;
    margin: 96px auto 0;
    padding: 0;
    border: 0;
    color: #c5c5ca;
    font-family: var(--font-serif);
    font-size: clamp(1.1rem, 2.1vw, 1.55rem);
    line-height: 1.75;
    text-align: center;
}

.hero-description em {
    display: block;
    margin-top: 14px;
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 0.76rem;
    font-style: normal;
    font-weight: 400;
}

.disclaimer-strip {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: start;
    gap: 18px;
    max-width: 900px;
    margin: 82px auto 0;
    padding: 18px 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.035);
    box-shadow: inset 0 1px rgba(255, 255, 255, 0.025);
    text-align: left;
}

.disclaimer-label {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: #b4b4b8;
    font-size: 0.72rem;
    font-weight: 600;
    white-space: nowrap;
}

.disclaimer-label i {
    color: var(--accent-primary);
}

.hero-tagline {
    margin: 0;
    color: #737377;
    font-size: 0.7rem;
    font-weight: 400;
    line-height: 1.75;
    letter-spacing: 0;
    text-align: left;
}

/* Shared section typography */
.section-kicker {
    display: block;
    margin-bottom: 16px;
    color: #f5f5f7;
    font-size: clamp(1rem, 1.65vw, 1.2rem);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.03em;
}

.section-heading,
.tutorial-header,
.quotes-header {
    max-width: 900px;
    margin: 0 auto 68px;
    text-align: center;
}

.section-heading h2,
.tutorial-header h2,
.quotes-header h2 {
    margin: 0;
    color: var(--text-primary);
    font-size: clamp(2.7rem, 5.6vw, 5rem);
    font-weight: 700;
    line-height: 1.04;
    letter-spacing: -0.062em;
}

.section-heading > p,
.tutorial-header > p,
.quotes-header > p {
    max-width: 660px;
    margin: 22px auto 0;
    color: var(--text-secondary);
    font-size: clamp(1rem, 1.8vw, 1.22rem);
    line-height: 1.55;
    letter-spacing: -0.026em;
}

/* Product overview */
.overview-section {
    position: relative;
    padding: 144px 0;
    background: #0b0b0d;
}

.overview-section::before {
    display: none;
}

.overview-grid {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 18px;
}

.overview-card {
    position: relative;
    min-height: 430px;
    padding: 38px;
    overflow: hidden;
    border: 0;
    border-radius: 32px;
    background: #151517;
    clip-path: none;
    box-shadow: inset 0 1px rgba(255, 255, 255, 0.035);
    transition: transform 450ms var(--ease-out), background 300ms ease;
}

.overview-card::after {
    display: none;
}

.overview-card:hover {
    transform: translateY(-5px);
    background: #19191c;
}

.overview-card--wide {
    grid-row: span 2;
    min-height: 878px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background:
        radial-gradient(circle at 68% 68%, rgba(52, 95, 184, 0.22), transparent 34%),
        linear-gradient(160deg, #19191d, #101012);
}

.card-eyebrow {
    display: block;
    margin-bottom: 16px;
    color: #8e8e93;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: -0.01em;
}

.overview-card h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: clamp(2rem, 3.5vw, 3.35rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.055em;
}

.overview-card > p,
.overview-copy > p {
    max-width: 460px;
    margin-top: 18px;
    color: var(--text-secondary);
    font-size: 0.96rem;
    line-height: 1.55;
    letter-spacing: -0.02em;
}

.overview-card:not(.overview-card--wide) h3 {
    font-size: clamp(1.75rem, 2.75vw, 2.5rem);
}

.overview-symbol {
    display: grid;
    place-items: center;
    width: 56px;
    height: 56px;
    margin-bottom: 72px;
    border-radius: 17px;
    color: #fff;
    font-size: 1.1rem;
    box-shadow: inset 0 1px rgba(255, 255, 255, 0.18), 0 18px 40px rgba(0, 0, 0, 0.22);
}

.overview-symbol--blue {
    background: linear-gradient(145deg, #46a8ff, #0066d6);
}

.overview-symbol--purple {
    background: linear-gradient(145deg, #c774ef, #8148cb);
}

.device-cloud {
    position: relative;
    min-height: 430px;
    margin: 48px -20px -20px;
}

.device-cloud::before {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 4%;
    width: 90%;
    height: 58%;
    border-radius: 50%;
    background: radial-gradient(ellipse, rgba(41, 151, 255, 0.28), rgba(133, 77, 203, 0.09) 50%, transparent 72%);
    filter: blur(28px);
    transform: translateX(-50%);
}

.device-icon {
    position: absolute;
    display: grid;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.13), rgba(255, 255, 255, 0.035));
    color: rgba(255, 255, 255, 0.9);
    box-shadow: inset 0 1px rgba(255, 255, 255, 0.11), 0 30px 70px rgba(0, 0, 0, 0.36);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: transform 500ms var(--ease-out);
}

.overview-card:hover .device-icon--phone {
    transform: translate(-7px, -8px) rotate(-7deg);
}

.overview-card:hover .device-icon--tv {
    transform: translateY(-7px);
}

.overview-card:hover .device-icon--desktop {
    transform: translate(8px, -6px) rotate(6deg);
}

.device-icon--phone {
    left: 4%;
    bottom: 4%;
    width: 118px;
    height: 206px;
    border-radius: 29px;
    font-size: 2rem;
    transform: rotate(-5deg);
}

.device-icon--tv {
    left: 50%;
    bottom: 22%;
    width: 245px;
    height: 152px;
    border-radius: 20px;
    font-size: 2.5rem;
    transform: translateX(-50%);
}

.device-icon--desktop {
    right: 3%;
    bottom: 2%;
    width: 150px;
    height: 188px;
    border-radius: 24px;
    font-size: 2.2rem;
    transform: rotate(5deg);
}

/* Download */
.download-section {
    position: relative;
    padding: 144px 0;
    background: #000;
}

.download-section::before {
    content: '';
    position: absolute;
    top: 15%;
    left: 50%;
    width: 820px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(ellipse, rgba(27, 79, 139, 0.12), transparent 66%);
    transform: translateX(-50%);
    pointer-events: none;
}

.download-section .container {
    position: relative;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 16px;
}

.section-heading--download {
    grid-column: 1 / -1;
    margin-bottom: 56px;
}

.download-group {
    position: relative;
    min-height: 240px;
    margin: 0;
    padding: 28px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.065);
    border-radius: 28px;
    background: linear-gradient(150deg, #171719, #101012);
    clip-path: none;
    box-shadow: inset 0 1px rgba(255, 255, 255, 0.035);
    transition: transform 400ms var(--ease-out), border-color 250ms ease, background 250ms ease;
}

.download-group::before {
    content: '';
    position: absolute;
    top: -110px;
    right: -100px;
    width: 230px;
    height: 230px;
    border-radius: 50%;
    background: rgba(41, 151, 255, 0.08);
    filter: blur(18px);
    pointer-events: none;
}

.download-group::after {
    display: none;
}

.download-group:nth-child(3)::before,
.download-group:nth-child(4)::before {
    background: rgba(48, 209, 88, 0.07);
}

.download-group:nth-child(5)::before {
    background: rgba(191, 90, 242, 0.07);
}

.download-group:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.12);
    background: linear-gradient(150deg, #1c1c1f, #121214);
}

.download-group:nth-child(2) { grid-column: span 6; }
.download-group:nth-child(3) { grid-column: span 3; }
.download-group:nth-child(4) { grid-column: span 3; }
.download-group:nth-child(5) { grid-column: span 8; }
.download-group:nth-child(6) { grid-column: span 4; }

.section-label {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 30px;
    color: #f5f5f7;
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: -0.025em;
    text-transform: none;
}

.section-label i {
    display: grid;
    place-items: center;
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    font-size: 0.9rem;
}

.section-label::after {
    display: none;
}

.download-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 9px;
}

.btn {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 11px;
    min-height: 58px;
    padding: 0 15px;
    border: 1px solid rgba(255, 255, 255, 0.07) !important;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.055) !important;
    color: rgba(245, 245, 247, 0.86);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    box-shadow: none;
    transition: background 180ms ease, transform 180ms ease, border-color 180ms ease;
}

.btn::after {
    content: '\f054';
    margin-left: auto;
    color: #77777c;
    font: 900 0.55rem/1 'Font Awesome 6 Free';
    transition: transform 180ms ease, color 180ms ease;
}

.btn i {
    width: 20px;
    color: #e8e8ed;
    font-size: 0.96rem;
    text-align: center;
}

.btn--android i { color: #63d98b; }
.btn--windows i { color: #64b5f6; }
.btn--cloud i { color: #c68af1; }

.btn:hover {
    transform: scale(1.015);
    border-color: rgba(255, 255, 255, 0.12) !important;
    background: rgba(255, 255, 255, 0.095) !important;
    color: #fff;
    filter: none;
    box-shadow: none;
}

.btn:hover::after {
    color: var(--accent-primary);
    transform: translateX(2px);
}

.btn:hover i {
    transform: none;
}

/* Installation */
.tutorial-section {
    position: relative;
    padding: 144px 0;
    background: #0b0b0d;
}

.tutorial-section::before {
    display: none;
}

.tutorial-tabs {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    width: max-content;
    max-width: 100%;
    margin: 0 auto 42px;
    padding: 5px;
    overflow-x: auto;
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 999px;
    background: #171719;
    scrollbar-width: none;
}

.tutorial-tabs::-webkit-scrollbar {
    display: none;
}

.tutorial-tab-indicator {
    display: none;
}

.tutorial-tab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    min-width: 112px;
    min-height: 39px;
    padding: 0 17px;
    border: 0;
    border-radius: 999px;
    background: transparent;
    color: #8e8e93;
    font-family: var(--font-sans);
    font-size: 0.76rem;
    font-weight: 500;
    transition: color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.tutorial-tab:hover {
    color: #d9d9de;
    background: rgba(255, 255, 255, 0.035);
}

.tutorial-tab.active {
    color: #fff;
    background: #303034;
    box-shadow: inset 0 1px rgba(255, 255, 255, 0.07), 0 2px 10px rgba(0, 0, 0, 0.18);
}

.tutorial-tab i {
    font-size: 0.84rem;
}

.tutorial-panel {
    display: none;
}

.tutorial-panel.active {
    display: block;
    animation: panelFade 420ms var(--ease-out) both;
}

.tutorial-steps {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.tutorial-step {
    position: relative;
    min-height: 208px;
    padding: 28px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.065);
    border-radius: 24px;
    background: #151517;
    box-shadow: inset 0 1px rgba(255, 255, 255, 0.025);
    transition: transform 350ms var(--ease-out), background 250ms ease;
}

.tutorial-step::before,
.tutorial-step::after {
    display: none;
}

.tutorial-step:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.1);
    background: #19191c;
    box-shadow: none;
}

.step-number {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    margin: 0 0 20px;
    border: 0;
    border-radius: 50%;
    background: #27272a;
    color: #f5f5f7;
    font-size: 0.76rem;
    font-weight: 600;
}

.step-number::before {
    display: none;
}

.step-content h4 {
    margin-bottom: 9px;
    color: #f5f5f7;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}

.step-content p,
.step-list {
    color: #929297;
    font-size: 0.79rem;
    line-height: 1.78;
    letter-spacing: -0.01em;
}

.step-content strong,
.step-list strong {
    color: #d2d2d7;
    font-weight: 600;
}

.step-tip {
    margin-top: 14px;
    padding: 11px 13px;
    border: 0;
    border-radius: 11px;
    background: rgba(41, 151, 255, 0.075);
    color: #8aa9c5;
    font-size: 0.71rem;
    line-height: 1.58;
}

.step-tip i {
    margin-right: 6px;
    color: #2997ff;
}

.tutorial-faq {
    display: block;
    max-width: 820px;
    margin: 112px auto 0;
}

.tutorial-faq > .section-kicker {
    margin-bottom: 10px;
    text-align: center;
}

.tutorial-faq h3 {
    margin: 0 0 44px;
    color: #f5f5f7;
    font-size: clamp(2.4rem, 4vw, 3.7rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.055em;
    text-align: center;
}

.faq-list {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.faq-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.faq-question {
    width: 100%;
    min-height: 72px;
    padding: 15px 2px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    border: 0;
    background: transparent;
    color: #d6d6da;
    font-family: var(--font-sans);
    font-size: 0.86rem;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: color 180ms ease;
}

.faq-question:hover,
.faq-item.open .faq-question {
    color: #fff;
}

.faq-question i {
    display: grid;
    place-items: center;
    width: 26px;
    height: 26px;
    flex: 0 0 26px;
    border-radius: 50%;
    background: #202023;
    color: #8e8e93;
    font-size: 0.58rem;
    transition: transform 280ms var(--ease-out), background 180ms ease;
}

.faq-item.open .faq-question i {
    transform: rotate(180deg);
    background: #29292c;
    color: #fff;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 2px;
    transition: max-height 380ms var(--ease-out);
}

.faq-answer p {
    padding: 0 48px 24px 0;
    color: #8e8e93;
    font-size: 0.8rem;
    line-height: 1.8;
}

.faq-item.open .faq-answer {
    max-height: 520px;
}

/* Quotes */
.quotes-section {
    position: relative;
    padding: 144px 0 160px;
    border: 0;
    background:
        radial-gradient(circle at 12% 8%, rgba(109, 70, 163, 0.1), transparent 30rem),
        #000;
}

.quotes-header::after {
    display: none;
}

.quotes-grid {
    display: block;
    column-count: 3;
    column-gap: 14px;
}

.quote-card {
    display: inline-block;
    width: 100%;
    margin: 0 0 14px;
    padding: 30px 28px 26px;
    break-inside: avoid;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.065);
    border-radius: 24px;
    background: #111113;
    clip-path: none;
    box-shadow: inset 0 1px rgba(255, 255, 255, 0.025);
    transition: transform 350ms var(--ease-out), background 250ms ease;
}

.quote-card::before {
    content: '“';
    position: static;
    display: block;
    height: 34px;
    color: #4b4b50;
    font-family: Georgia, serif;
    font-size: 3.6rem;
    line-height: 1;
    opacity: 1;
}

.quote-card::after {
    display: none;
}

.quote-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.1);
    background: #171719;
    box-shadow: none;
}

.quote-text {
    margin: 14px 0 26px;
    color: #d1d1d6;
    font-family: var(--font-serif);
    font-size: 0.9rem;
    line-height: 1.9;
}

.quote-source {
    display: flex;
    align-items: center;
    gap: 9px;
    color: #77777c;
    font-size: 0.7rem;
    letter-spacing: 0;
}

.quote-source::before {
    content: '';
    width: 13px;
    height: 1px;
    background: #4c4c50;
}

.quote-source em {
    color: #77777c;
    font-style: normal;
}

/* Footer */
.footer {
    position: relative;
    padding: 34px 0 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    background: #0b0b0d;
    text-align: left;
}

.footer::before {
    display: none;
}

.footer-content {
    display: block;
}

.footer-main,
.footer-bottom {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.footer-identity {
    display: flex;
    align-items: center;
    gap: 11px;
}

.brand-mark--small {
    width: 31px;
    height: 31px;
    flex-basis: 31px;
    font-size: 0.72rem;
}

.footer-brand,
.footer-tagline {
    display: block;
}

.footer-brand {
    color: #d2d2d7;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.footer-tagline {
    margin-top: 3px;
    color: #6e6e73;
    font-size: 0.64rem;
}

.footer-top {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0;
    border: 0;
    background: transparent;
    color: #8e8e93;
    font-family: var(--font-sans);
    font-size: 0.7rem;
    cursor: pointer;
    transition: color 180ms ease;
}

.footer-top i {
    display: grid;
    place-items: center;
    width: 27px;
    height: 27px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: #b6b6ba;
    font-size: 0.62rem;
}

.footer-top:hover {
    color: #fff;
}

.footer-divider {
    width: 100%;
    height: 1px;
    margin: 28px 0 18px;
    background: rgba(255, 255, 255, 0.07);
}

.footer-copy,
.footer-coordinate {
    color: #646469;
    font-size: 0.64rem;
    line-height: 1.5;
    letter-spacing: 0;
}

/* Focus and motion */
.btn:focus-visible,
.tutorial-tab:focus-visible,
.faq-question:focus-visible,
.footer-top:focus-visible,
.primary-action:focus-visible,
.secondary-action:focus-visible,
.navbar-action:focus-visible,
.navbar-links a:focus-visible,
.navbar-brand:focus-visible {
    outline: 2px solid #2997ff;
    outline-offset: 3px;
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #000;
}

::-webkit-scrollbar-thumb {
    border: 2px solid #000;
    border-radius: 99px;
    background: #3a3a3c;
}

::-webkit-scrollbar-thumb:hover {
    background: #55555a;
}

@keyframes panelFade {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes appleReveal {
    from { opacity: 0; transform: translateY(22px); }
    to { opacity: 1; transform: translateY(0); }
}

.reveal.visible,
.reveal-scale.visible {
    animation: appleReveal 0.85s var(--ease-out) forwards;
}

/* Tablet */
@media (max-width: 1024px) {
    .navbar-links {
        gap: 23px;
    }

    .product-frame {
        min-height: 500px;
    }

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

    .overview-card--wide {
        grid-column: 1 / -1;
        grid-row: auto;
        min-height: 720px;
    }

    .download-group:nth-child(2),
    .download-group:nth-child(5) { grid-column: span 7; }
    .download-group:nth-child(3),
    .download-group:nth-child(4),
    .download-group:nth-child(6) { grid-column: span 5; }

    .quotes-grid {
        column-count: 2;
    }
}

/* Mobile */
@media (max-width: 768px) {
    html {
        scroll-padding-top: 58px;
    }

    .container {
        width: min(calc(100% - 32px), 1120px);
    }

    .navbar,
    .navbar.scrolled {
        top: 0;
        width: 100%;
        height: 48px;
        padding: 0 16px;
    }

    .navbar-links {
        display: none;
    }

    .navbar-action {
        min-height: 27px;
        padding: 0 12px;
    }

    .hero {
        padding: 118px 0 72px;
    }

    .hero-title {
        font-size: clamp(3.25rem, 15.2vw, 5.25rem);
        line-height: 1.01;
        letter-spacing: -0.07em;
    }

    .hero-intro {
        font-size: 1rem;
    }

    .desktop-only {
        display: none;
    }

    .hero-actions {
        flex-direction: column;
        gap: 12px;
    }

    .primary-action,
    .secondary-action {
        font-size: 0.92rem;
    }

    .hero-platforms {
        flex-wrap: wrap;
        gap: 7px;
    }

    .hero-platforms > span {
        font-size: 0.64rem;
    }

    .product-showcase {
        margin-top: 68px;
    }

    .product-frame {
        min-height: 350px;
        padding: 10px 8px 0;
        border-radius: 25px;
    }

    .product-caption {
        display: block;
        text-align: center;
    }

    .product-caption span {
        display: block;
    }

    .product-caption span + span {
        margin-top: 4px;
    }

    .hero-description {
        margin-top: 72px;
        font-size: 1.02rem;
    }

    .disclaimer-strip {
        grid-template-columns: 1fr;
        gap: 8px;
        margin-top: 62px;
    }

    .overview-section,
    .download-section,
    .tutorial-section,
    .quotes-section {
        padding: 96px 0;
    }

    .section-heading,
    .tutorial-header,
    .quotes-header {
        margin-bottom: 46px;
    }

    .section-heading h2,
    .tutorial-header h2,
    .quotes-header h2 {
        font-size: clamp(2.55rem, 12.6vw, 4rem);
    }

    .section-heading > p,
    .tutorial-header > p,
    .quotes-header > p {
        font-size: 0.96rem;
    }

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

    .overview-card,
    .overview-card--wide {
        grid-column: auto;
        min-height: 380px;
        padding: 27px;
        border-radius: 25px;
    }

    .overview-card--wide {
        min-height: 650px;
    }

    .overview-symbol {
        margin-bottom: 58px;
    }

    .device-cloud {
        min-height: 330px;
        margin-inline: -18px;
    }

    .device-icon--phone {
        width: 82px;
        height: 154px;
        border-radius: 22px;
    }

    .device-icon--tv {
        width: 190px;
        height: 118px;
    }

    .device-icon--desktop {
        width: 104px;
        height: 150px;
    }

    .download-section .container {
        grid-template-columns: 1fr;
    }

    .section-heading--download,
    .download-group:nth-child(n) {
        grid-column: 1;
    }

    .download-group {
        min-height: 0;
        padding: 23px;
        border-radius: 23px;
    }

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

    .tutorial-tabs {
        width: 100%;
        justify-content: flex-start;
        padding: 5px;
        border-radius: 18px;
    }

    .tutorial-tab {
        min-width: 98px;
        padding: 0 12px;
    }

    .tutorial-steps {
        grid-template-columns: 1fr !important;
    }

    .tutorial-step {
        min-height: 0;
        padding: 23px;
        border-radius: 21px;
    }

    .tutorial-faq {
        margin-top: 82px;
    }

    .faq-answer p {
        padding-right: 14px;
    }

    .quotes-grid {
        column-count: 1;
    }

    .quote-card {
        padding: 26px 23px 23px;
        border-radius: 21px;
    }

    .footer-bottom {
        align-items: flex-start;
    }
}

@media (max-width: 440px) {
    .navbar-brand-text {
        font-size: 0.78rem;
    }

    .hero-title {
        font-size: 3.2rem;
    }

    .product-frame {
        min-height: 285px;
    }

    .overview-card--wide {
        min-height: 610px;
    }

    .device-icon--tv {
        width: 164px;
        height: 104px;
    }

    .device-icon--desktop {
        right: -2%;
    }

    .footer-main {
        align-items: flex-start;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}