:root {
    --bg-dark: #0a0a0c;
    --bg-card: rgba(255, 255, 255, 0.03);
    --primary: #1877F2;
    --primary-glow: rgba(24, 119, 242, 0.4);
    --accent: #c000fb;
    /* Vibrant Purple Accent */
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    --border: rgba(255, 255, 255, 0.1);
    --bg-header: rgba(10, 10, 12, 0.8);
    --bg-header-scrolled: rgba(10, 10, 12, 0.95);
    --bg-footer: rgba(10, 10, 12, 0.5);
    --font-head: 'Outfit', 'Noto Sans KR', 'Noto Sans JP', sans-serif;
    --font-body: 'Inter', 'Noto Sans KR', 'Noto Sans JP', sans-serif;
}

[data-theme="light"] {
    --bg-dark: #f8fafc;
    --bg-card: #ffffff;
    --primary: #1877F2;
    --primary-glow: rgba(24, 119, 242, 0.2);
    --accent: #c000fb;
    --text-main: #334155;
    --text-dim: #475569;
    --border: rgba(0, 0, 0, 0.1);
    --bg-header: rgba(255, 255, 255, 0.8);
    --bg-header-scrolled: rgba(255, 255, 255, 0.95);
    --bg-footer: rgba(240, 244, 248, 0.6);
}

[data-theme="light"] .u-item,
[data-theme="light"] .trust-card,
[data-theme="light"] .help-card,
[data-theme="light"] .faq-item {
    border: 1px solid rgba(24, 119, 242, 0.25);
    box-shadow: 0 8px 30px rgba(24, 119, 242, 0.08);
    /* 파란빛 섀도우 부품 */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
    /* Fixed header offset */
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    opacity: 1;
    transition: opacity 0.4s ease-out;
}

body.is-initializing {
    opacity: 0 !important;
    pointer-events: none;
}

/* --- Background Visual Elements --- */
.bg-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.bg-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    mix-blend-mode: screen;
}

.blob-1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -100px;
    right: -100px;
}

.blob-2 {
    width: 500px;
    height: 500px;
    background: var(--accent);
    bottom: -100px;
    left: -100px;
}

.blob-3 {
    width: 400px;
    height: 400px;
    background: #3b82f6;
    top: 40%;
    left: 20%;
    opacity: 0.08;
}

/* --- Giant Geometry --- */
.bg-geometry {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 300%;
}

.wireframe-ring {
    position: absolute;
    top: 10%;
    right: -10%;
    width: 85vw;
    max-width: 1600px;
    height: auto;
    color: var(--primary);
    opacity: 0.6;
    transform: rotate(-15deg);
    /* Removed animation and translateZ for zero-animation reliability */
    pointer-events: none;
}


@keyframes floatRotate {
    from {
        transform: rotate(0deg) translateY(0);
    }

    50% {
        transform: rotate(180deg) translateY(50px);
    }

    to {
        transform: rotate(360deg) translateY(0);
    }
}



.container {
    max-width: 1440px;
    width: 90%;
    margin: 0 auto;
}

/* --- Header & Nav --- */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    background: var(--bg-header);
    transition: background-color 0.3s, box-shadow 0.3s;
}

header.header-scrolled {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    background: var(--bg-header-scrolled);
}

.theme-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: background 0.3s;
}

.theme-btn:hover {
    background: var(--border);
}

/* --- Language Selector --- */
.lang-selector {
    position: relative;
    display: flex;
    align-items: center;
}

.lang-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: 20px;
    transition: background 0.3s;
    color: var(--text-main);
    font-size: 0.85rem;
    font-weight: 600;
}

.lang-btn:hover {
    background: var(--border);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 6px;
    display: none;
    flex-direction: column;
    min-width: 110px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    z-index: 1001;
}

.lang-dropdown.show {
    display: flex;
}

.lang-dropdown button {
    background: transparent;
    border: none;
    color: var(--text-main);
    padding: 8px 14px;
    text-align: left;
    cursor: pointer;
    border-radius: 6px;
    font-size: 0.85rem;
    transition: background 0.2s, color 0.2s;
    white-space: nowrap;
}

.lang-dropdown button:hover {
    background: var(--primary);
    color: white;
}

[data-theme="light"] .lang-dropdown {
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 10px 30px rgba(24, 119, 242, 0.1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-left: auto;
}

@media (max-width: 768px) {
    .nav-actions {
        gap: 0.8rem;
    }

    .btn-primary-sm {
        padding: 0.5rem 1rem;
        font-size: 0.75rem;
    }
}

nav {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-main);
    font-family: var(--font-head);
    font-weight: 700;
    font-size: 1.5rem;
}

.logo-svg {
    height: 36px;
    width: auto;
    display: block;
}

.logo-dark {
    display: block;
}

.logo-light {
    display: none;
}

[data-theme="light"] .logo-dark {
    display: none;
}

[data-theme="light"] .logo-light {
    display: block;
}


.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary);
}

/* --- Buttons --- */
.btn-primary,
.btn-primary-sm {
    background: linear-gradient(45deg, var(--primary), var(--accent));
    color: white;
    text-decoration: none;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    font-weight: 600;
    display: inline-block;
    transition: opacity 0.3s;
}

.btn-primary-sm {
    padding: 0.6rem 1.4rem;
    font-size: 0.85rem;
}

.btn-primary:hover,
.btn-primary-sm:hover {
    opacity: 0.9;
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-main);
    text-decoration: none;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    font-weight: 600;
    margin-left: 1rem;
    transition: background 0.3s;
}

.btn-secondary:hover {
    background: var(--border);
}

/* --- Hero Section --- */
.hero {
    padding-top: 180px;
    padding-bottom: 120px;
    position: relative;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: stretch;
}

.badge {
    display: inline-block;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    padding: 0.4rem 1rem;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    width: fit-content;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.hero-content h1 {
    font-family: var(--font-head);
    font-size: 4rem;
    line-height: 1.1;
    /* Slightly increased for better overall balance */
    font-weight: 900;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

/* Specific adjustment for CJK Title to prevent overlap/cramping */
html[lang="ko"] .hero-content h1,
html[lang="ja"] .hero-content h1 {
    line-height: 1.25;
}

.text-gradient {
    background: linear-gradient(45deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-primary {
    color: var(--primary) !important;
}

.hero-desc {
    font-size: 1.25rem;
    color: var(--text-dim);
    margin-bottom: 2.5rem;
    max-width: 550px;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    font-size: 0.9rem;
    color: var(--text-dim);
}

.stat-item strong {
    color: var(--text-main);
    display: block;
    font-size: 1.2rem;
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    /* 내부 영상 박스는 중앙에 배치 */
}

.image-box {
    position: relative;
    width: 100%;
    height: 100%;
    background: transparent;
    border: none;
    box-shadow: none;
    overflow: hidden;
}

.hero-video {
    width: 100%;
    height: 100%;
    /* 박스 높이에 꽉 채움 */
    object-fit: cover;
    /* 비율을 유지하면서 영역을 꽉 채움 */
    display: block;

    /* GPU 가속 활성화 */
    transform: translateZ(0);
    will-change: transform;
}

.glow-effect {
    position: absolute;
    inset: -10%;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    opacity: 0.4;
    pointer-events: none;
    z-index: -1;
}

/* --- Utility Section (Premium Glass Tiles) --- */
.utility {
    padding: 120px 0;
    position: relative;
    background: linear-gradient(to bottom, rgba(10, 10, 10, 0.5), transparent);
}

.utility-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.u-item {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 30px 25px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.u-icon-box {
    width: 48px;
    height: 48px;
    background: linear-gradient(45deg, var(--primary), var(--accent));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.2);
}

.u-icon-box svg {
    width: 24px;
    height: 24px;
}

.u-text h4 {
    font-family: var(--font-head);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-main);
}

.u-text p {
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.6;
}

@media (max-width: 1200px) {
    .utility-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .utility-grid {
        grid-template-columns: 1fr;
    }
}


/* --- Features Section --- */
.section-title {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title h2 {
    font-family: var(--font-head);
    font-size: 2.5rem;
    margin-bottom: 1rem;
    letter-spacing: 0.02em;
}

.section-title p {
    color: var(--text-dim);
    font-size: 1.1rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 6rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 3rem 2rem;
    border-radius: 24px;
    transition: transform 0.3s, border-color 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    background: var(--border);
}

.f-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    background: var(--border);
}

.f-icon svg {
    width: 20px;
    height: 20px;
}

.f-icon-blue svg {
    color: #3b82f6;
}

.f-icon-purple svg {
    color: #a855f7;
}

.f-icon-green svg {
    color: #10b981;
}

.f-icon-yellow svg {
    color: #f59e0b;
}

.feature-card h3 {
    font-family: var(--font-head);
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-dim);
}

/* --- Showcase Section --- */
.showcase {
    padding: 120px 0;
    background: linear-gradient(to bottom, transparent, rgba(10, 10, 10, 0.4), transparent);
}

.showcase-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 30px;
    margin-top: 60px;
    height: 580px;
}

.shot-frame {
    position: relative;
    border-radius: 20px;
    background: transparent;
    border: none;
    box-shadow: none;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}


.placeholder-img {
    width: 100%;
    flex: 1;
    /* 부모 프레임의 전체 높이를 차지 */
    background: transparent;
    overflow: hidden;
    position: relative;
    display: block;
}

.placeholder-img img {
    width: 100%;
    height: 100%;
    /* 부모 영역에 100% 맞춤 */
    object-fit: cover;
    /* 비율 유지하며 꽉 채움 */
    display: block;
    border-radius: 20px;
    /* 전체 둥글게 */
}

.main-shot .placeholder-img {
    height: 100%;
    /* 고정 비율 제거, 100% 채움 */
}

.side-shots {
    display: flex;
    flex-direction: column;
    gap: 30px;
    height: 100%;
}

.detail-shot {
    flex: 1;
    min-height: 0;
}

.dummy-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.4);
    line-height: 1.5;
}

.dummy-text span {
    font-size: 0.85rem;
    font-weight: 400;
    opacity: 0.6;
}

/* Browser Header Mockup - REMOVED for full-fill */
.shot-frame::before {
    display: none;
}

.frame-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.1);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, transparent 100%);
}

@media (max-width: 992px) {
    .showcase-grid {
        grid-template-columns: 1fr;
        height: auto;
        /* Allow auto height on mobile */
    }

    .side-shots {
        display: grid;
        grid-template-columns: 1fr 1fr;
        height: auto;
    }
}

@media (max-width: 640px) {
    .side-shots {
        grid-template-columns: 1fr;
    }
}

/* --- Bottom Trust Section (Solo Vision + Privacy Combined) --- */
.trust-footer-section {
    padding: 120px 0;
    background: linear-gradient(180deg, transparent, rgba(21, 101, 192, 0.03));
}

.trust-grid-combined {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: stretch;
}

.trust-card {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 40px;
    padding: 60px;
    display: flex;
    flex-direction: column;
}

.trust-card h2 {
    font-family: var(--font-head);
    font-size: 2.2rem;
    line-height: 1.2;
    margin-bottom: 2rem;
}

.trust-card p {
    color: var(--text-dim);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.benefit-list {
    list-style: none;
    margin: 2rem 0;
}

.benefit-list li {
    margin-bottom: 1.2rem;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-dim);
    font-size: 0.95rem;
}

.benefit-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--text-main);
}

/* Solo Card Specifics */
.solo-card .accent-box-mini {
    margin-top: auto;
    padding: 25px;
    background: linear-gradient(45deg, rgba(21, 101, 192, 0.1), rgba(192, 0, 251, 0.1));
    border-radius: 20px;
    border: 1px solid rgba(21, 101, 192, 0.2);
}

.stat-mini {
    font-family: var(--font-head);
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-main);
    text-align: center;
}

/* Privacy Card Specifics */
.badge-privacy {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
}

.privacy-content ul {
    list-style: none;
    margin: 2rem 0;
}

.privacy-content li {
    margin-bottom: 1.2rem;
    color: var(--text-dim);
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.95rem;
}

.privacy-content li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--text-main);
}

.copyright-note {
    font-size: 0.8rem;
    opacity: 0.5;
    font-style: italic;
}

@media (max-width: 1100px) {
    .trust-grid-combined {
        grid-template-columns: 1fr;
    }

    .trust-card {
        padding: 40px;
    }
}

/* --- Testimonials Section (Social Proof) --- */
.testimonials {
    padding: 120px 0;
    position: relative;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 60px;
}

.testi-card {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 32px;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: border-color 0.3s, background-color 0.3s;
}

.testi-card:hover {
    border-color: rgba(255, 255, 255, 0.12);
    background-color: rgba(255, 255, 255, 0.04);
}

.testi-icon {
    width: 32px;
    height: 32px;
    color: var(--primary);
    opacity: 0.6;
    margin-bottom: 1.5rem;
}

.t-quote {
    font-family: var(--font-head);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.3;
    color: var(--text-main);
}

.t-text {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-dim);
    margin-bottom: 2rem;
    flex-grow: 1;
}

.t-author {
    display: flex;
    align-items: center;
    gap: 15px;
    border-top: 1px solid var(--border);
    padding-top: 20px;
}

.t-avatar {
    width: 48px;
    height: 48px;
    background: linear-gradient(45deg, var(--primary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.t-info {
    display: flex;
    flex-direction: column;
}

.t-name {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-main);
}

.t-role {
    font-size: 0.85rem;
    color: var(--text-dim);
}

/* Light mode adjustments for testimonials */
[data-theme="light"] .testi-card {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(24, 119, 242, 0.15);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

@media (max-width: 992px) {
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
}

.manifesto {
    padding: 120px 0;
    overflow: hidden;
}

.manifesto-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: stretch;
}

.manifesto-content h2 {
    font-family: var(--font-head);
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    letter-spacing: 0.02em;
    line-height: 1.1;
}

.manifesto-lead {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

.manifesto-desc {
    color: var(--text-dim);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.manifesto-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}

.m-tag {
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 100px;
    color: var(--text-main);
}

.manifesto-signature {
    font-style: italic;
    font-family: var(--font-head);
    font-size: 1.2rem;
    color: var(--text-dim);
}

.manifesto-visual {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.manifesto-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.manifesto-glow {
    position: absolute;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15), transparent 70%);
    pointer-events: none;
    z-index: -1;
}

@media (max-width: 1024px) {
    .manifesto-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .manifesto-tags {
        justify-content: center;
    }

    .manifesto-visual {
        width: 100%;
        margin-right: 0;
        margin-top: 3rem;
    }
}

/* --- Help Section (Tutorial + FAQ Combined) --- */
.help-section {
    padding: 120px 0;
    background: linear-gradient(to bottom, transparent, rgba(99, 102, 241, 0.02), transparent);
}

.help-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: stretch;
}

.help-card {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    /* trust-card와 동일한 얇은 실선 */
    border-radius: 40px;
    /* trust-card와 동일한 둥글기 */
    padding: 50px;
    min-height: 650px;
    /* Increased min-height to 650px to provide more stable room for translations (KO/JP) and accordion expansion */
    /* Pre-allocate space to prevent layout shift */
    display: flex;
    flex-direction: column;
}

.section-title.text-left {
    text-align: left;
    margin-bottom: 3rem;
}

.section-title.text-left h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* Vertical Steps */
.step-list-vertical {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.step-v {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.step-v-num {
    font-family: var(--font-head);
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(45deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    min-width: 50px;
}

.step-v-content h4 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}

.step-v-content p {
    font-size: 0.95rem;
    color: var(--text-dim);
}

/* Compact FAQ */
.faq-list-compact {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.01);
    transition: background 0.3s;
}

.faq-item:hover {
    background: rgba(255, 255, 255, 0.03);
}

.faq-toggle {
    width: 100%;
    background: transparent;
    border: none;
    padding: 1.25rem;
    color: var(--text-main);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-toggle::after {
    content: '+';
    color: var(--text-dim);
    font-size: 1.2rem;
}

.faq-content {
    display: none;
    padding: 0 1.25rem 1.25rem;
    color: var(--text-dim);
    font-size: 0.95rem;
    line-height: 1.6;
}

.faq-item.active .faq-content {
    display: block;
}

.faq-item.active .faq-toggle::after {
    content: '−';
}

@media (max-width: 1024px) {
    .help-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .help-card {
        padding: 40px;
        min-height: auto;
        /* Reset min-height for mobile stacking */
    }
}

.footer-support {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-dim);
}

.footer-support a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.footer-support a:hover {
    color: var(--accent);
    text-decoration: underline;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

.back-to-top:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 0 20px var(--primary-glow);
    transform: translateY(-5px);
}

[data-theme="light"] .back-to-top {
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(24, 119, 242, 0.2);
    box-shadow: 0 10px 20px rgba(24, 119, 242, 0.1);
}

[data-theme="light"] .back-to-top:hover {
    background: var(--primary);
    color: #ffffff;
}


/* --- Footer --- */
footer {
    padding: 1.2rem 0;
    border-top: 1px solid var(--border);
    background: var(--bg-footer);
    backdrop-filter: blur(20px);
    transition: background-color 0.3s;
}

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

.footer-brand-line {
    font-family: var(--font-head);
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-main);
    letter-spacing: 0.05em;
}

.footer-links p {
    color: var(--text-dim);
    font-size: 0.85rem;
}

@media (max-width: 900px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-desc {
        margin: 0 auto 2.5rem;
    }

    .hero-stats {
        justify-content: center;
    }

    h1 {
        font-size: 3rem;
    }

    .nav-links {
        display: none;
    }
}