.os-page {
    background: #f8f9fa;
    margin-top: 110px;
    padding: 0;
}

.os-hero {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    padding: 80px 24px 60px;
    text-align: center;
}

.os-hero-inner {
    max-width: 900px;
    margin: 0 auto;
}

.os-hero-badge {
    display: inline-block;
    background: rgba(255, 111, 15, 0.2);
    border: 1px solid rgba(255, 111, 15, 0.4);
    color: #ff8f4f;
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}

.os-hero-title {
    font-size: clamp(28px, 5vw, 42px);
    font-weight: 800;
    color: #fff;
    margin: 0 0 20px 0;
    line-height: 1.35;
    letter-spacing: -0.02em;
}

.os-hero-desc {
    font-size: clamp(15px, 2vw, 18px);
    color: rgba(255, 255, 255, 0.85);
    margin: 0 0 36px 0;
    line-height: 1.6;
}

.os-hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.os-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.os-cta-btn:hover {
    transform: translateY(-2px);
}

.os-cta-telegram {
    background: linear-gradient(135deg, #2AABEE, #229ED9);
    color: #fff;
    box-shadow: 0 6px 20px rgba(42, 171, 238, 0.35);
}

.os-cta-telegram:hover {
    box-shadow: 0 8px 28px rgba(42, 171, 238, 0.45);
    color: #fff;
}

.os-cta-kakao {
    background: #fee500;
    color: #191919;
    box-shadow: 0 6px 20px rgba(254, 229, 0, 0.35);
}

.os-cta-kakao:hover {
    box-shadow: 0 8px 28px rgba(254, 229, 0, 0.45);
    color: #191919;
}

.os-services {
    padding: 64px 24px;
}

.os-services-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.os-section-title {
    font-size: 28px;
    font-weight: 700;
    color: #1a1a2e;
    text-align: center;
    margin: 0 0 40px 0;
}

@keyframes os-card-in {
    0% {
        opacity: 0;
        transform: translateY(16px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-animate.show {
    opacity: 1;
    transform: translateY(0);
}

.os-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.os-grid-card {
    background: #fff;
    border-radius: 16px;
    padding: 32px 24px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: box-shadow 0.25s, transform 0.25s;
    opacity: 0;
    transform: translateY(20px);
}

.scroll-animate.show .os-grid-card {
    opacity: 1;
    transform: translateY(0);
}

.scroll-animate.show .os-grid-card:nth-child(1) { transition-delay: 0.1s; }
.scroll-animate.show .os-grid-card:nth-child(2) { transition-delay: 0.2s; }
.scroll-animate.show .os-grid-card:nth-child(3) { transition-delay: 0.3s; }
.scroll-animate.show .os-grid-card:nth-child(4) { transition-delay: 0.4s; }
.scroll-animate.show .os-grid-card:nth-child(5) { transition-delay: 0.5s; }
.scroll-animate.show .os-grid-card:nth-child(6) { transition-delay: 0.6s; }

.os-grid-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
    transform: translateY(-4px) !important;
}

.os-card-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: rgba(255, 111, 15, 0.12);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
}

.os-card-title {
    font-size: 18px;
    font-weight: 700;
    color: #1a1a2e;
    margin: 0 0 12px 0;
    line-height: 1.35;
}

.os-card-desc {
    font-size: 14px;
    color: #555;
    line-height: 1.6;
    margin: 0 0 20px 0;
}

.os-card-list {
    margin: 0;
    padding-left: 20px;
    font-size: 13px;
    color: #666;
    line-height: 1.7;
}

.os-card-list li {
    margin-bottom: 8px;
}

.os-why {
    padding: 56px 24px;
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
}

.os-why-inner {
    max-width: 1000px;
    margin: 0 auto;
}

.os-why-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.os-why-card {
    background: #fff;
    border-radius: 12px;
    padding: 24px 24px 24px 28px;
    border-left: 4px solid var(--primary);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.4s ease, transform 0.4s ease, box-shadow 0.25s ease;
}

.os-why-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.scroll-animate.show .os-why-card {
    opacity: 1;
    transform: translateY(0);
}

.scroll-animate.show .os-why-card:nth-child(1) { transition-delay: 0.05s; }
.scroll-animate.show .os-why-card:nth-child(2) { transition-delay: 0.1s; }
.scroll-animate.show .os-why-card:nth-child(3) { transition-delay: 0.15s; }
.scroll-animate.show .os-why-card:nth-child(4) { transition-delay: 0.2s; }
.scroll-animate.show .os-why-card:nth-child(5) { transition-delay: 0.25s; }
.scroll-animate.show .os-why-card:nth-child(6) { transition-delay: 0.3s; }

.os-why-card-num {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.os-why-card-title {
    font-size: 16px;
    font-weight: 700;
    color: #1a1a2e;
    margin: 0 0 10px;
    line-height: 1.35;
}

.os-why-card-desc {
    font-size: 14px;
    color: #555;
    line-height: 1.7;
    margin: 0;
}

.os-preview {
    padding: 56px 24px;
    background: #f0f2f5;
}

.os-preview-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.os-preview-sub {
    text-align: center;
    font-size: 15px;
    color: #555;
    margin: 0 0 32px;
    line-height: 1.5;
}

.os-preview-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

@media (max-width: 1024px) {
    .os-preview-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .os-preview-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .os-preview-grid {
        grid-template-columns: 1fr;
    }
}

.os-preview-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: box-shadow 0.25s, transform 0.25s;
}

.os-preview-card:hover {
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.1);
    transform: translateY(-3px);
}

.os-preview-thumb {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 160px;
    background-color: #f1f5f9;
    background-image: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    background-size: cover;
    background-position: center;
    color: #94a3b8;
    position: relative;
}

/* Fallback for placeholder when image fails to load or isn't there yet */
.os-preview-thumb[style*="placeholder.png"]::after {
    content: "이미지 준비 중입니다";
    font-size: 13px;
    font-weight: 600;
    color: #94a3b8;
    position: absolute;
}

.os-preview-title {
    font-size: 16px;
    font-weight: 700;
    color: #1a1a2e;
    margin: 0;
    padding: 16px 18px 6px;
    line-height: 1.3;
}

.os-preview-desc {
    font-size: 13px;
    color: #666;
    margin: 0;
    padding: 0 18px 14px;
    line-height: 1.45;
}

.os-preview-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    padding: 0 18px 18px;
    margin-top: auto;
    align-self: flex-end;
    transition: color 0.2s;
}

.os-preview-link:hover {
    color: var(--primary-dark);
}

.os-preview-price {
    font-size: 15px;
    font-weight: 700;
    color: var(--primary);
    margin: 0;
    margin-top: auto;
    padding: 0 18px 18px;
    line-height: 1.4;
    text-align: right;
    align-self: flex-end;
}

.os-cta {
    padding: 80px 24px;
    background: linear-gradient(135deg, #1a1a2e 0%, #0f3460 100%);
    text-align: center;
    box-shadow: 0 10px 40px rgba(15, 52, 96, 0.2);
    margin-bottom: 0 !important;
    border-radius: 0 !important;
}

.os-cta-inner {
    max-width: 640px;
    margin: 0 auto;
}

.os-cta .os-section-title {
    color: #fff;
}

.os-cta-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    margin: 0 0 36px 0;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(42, 171, 238, 0.4);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(42, 171, 238, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(42, 171, 238, 0);
    }
}

.os-cta-buttons .os-cta-telegram {
    background: linear-gradient(135deg, #2AABEE, #229ED9);
    color: #fff;
    box-shadow: 0 6px 20px rgba(42, 171, 238, 0.35);
    animation: pulse 2s infinite;
}

.os-cta-buttons .os-cta-telegram:hover {
    box-shadow: 0 8px 28px rgba(42, 171, 238, 0.45);
    transform: translateY(-3px);
}

.os-cta-buttons .os-cta-kakao {
    background: #fee500;
    color: #191919;
    box-shadow: 0 6px 20px rgba(254, 229, 0, 0.35);
}

.os-cta-buttons .os-cta-kakao:hover {
    box-shadow: 0 8px 28px rgba(254, 229, 0, 0.45);
    transform: translateY(-3px);
}

.os-faq {
    padding: 80px 24px;
    background: linear-gradient(180deg, #e8f4fc 0%, #d6eaf8 100%);
}

.os-faq-inner {
    max-width: 800px;
    margin: 0 auto;
}

.os-faq-list {
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.os-faq-item {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    overflow: hidden;
    transition: box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(15px);
}

.scroll-animate.show .os-faq-item {
    opacity: 1;
    transform: translateY(0);
}

.scroll-animate.show .os-faq-item:nth-child(1) { transition: all 0.4s ease 0.1s; }
.scroll-animate.show .os-faq-item:nth-child(2) { transition: all 0.4s ease 0.15s; }
.scroll-animate.show .os-faq-item:nth-child(3) { transition: all 0.4s ease 0.2s; }
.scroll-animate.show .os-faq-item:nth-child(4) { transition: all 0.4s ease 0.25s; }
.scroll-animate.show .os-faq-item:nth-child(5) { transition: all 0.4s ease 0.3s; }
.scroll-animate.show .os-faq-item:nth-child(6) { transition: all 0.4s ease 0.35s; }
.scroll-animate.show .os-faq-item:nth-child(7) { transition: all 0.4s ease 0.4s; }
.scroll-animate.show .os-faq-item:nth-child(8) { transition: all 0.4s ease 0.45s; }
.scroll-animate.show .os-faq-item:nth-child(9) { transition: all 0.4s ease 0.5s; }
.scroll-animate.show .os-faq-item:nth-child(10) { transition: all 0.4s ease 0.55s; }

.os-faq-item:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.os-faq-q {
    font-size: 16px;
    font-weight: 600;
    color: #1a1a2e;
    margin: 0;
    padding: 20px 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.2s ease, color 0.2s ease;
}

.os-faq-q:hover {
    color: var(--primary);
    background: #fafafa;
}

.os-faq-q i {
    font-size: 14px;
    color: #888;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.os-faq-item.open .os-faq-q i {
    transform: rotate(180deg);
    color: var(--primary);
}

.os-faq-item.open .os-faq-q {
    border-bottom: 1px solid #f0f0f0;
}

.os-faq-a {
    font-size: 15px;
    color: #555;
    line-height: 1.7;
    margin: 0;
    padding: 0 24px;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease, padding 0.3s ease;
}

.os-faq-item.open .os-faq-a {
    max-height: 300px;
    opacity: 1;
    padding: 20px 24px;
}

.os-expert-section {
    padding: 80px 24px;
    background-color: #fff;
}

.os-expert-container {
    max-width: 1000px;
    margin: 0 auto;
}

.os-expert-header {
    text-align: center;
    margin-bottom: 50px;
}

.os-expert-title {
    font-size: 28px;
    font-weight: 700;
    color: #1a1a2e;
    margin: 0 0 16px 0;
}

.os-expert-subtitle {
    font-size: 16px;
    color: #666666;
    margin: 0;
}

.os-expert-content {
    display: flex;
    gap: 48px;
    align-items: stretch;
}

.os-expert-left {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 36px;
}

.os-expert-item {
    display: flex;
    align-items: flex-start;
    gap: 18px;
}

.os-expert-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: #8b5cf6;
    color: #ffffff;
    font-weight: 700;
    font-size: 16px;
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 4px 10px rgba(139, 92, 246, 0.3);
}

.os-expert-text h3 {
    font-size: 20px;
    font-weight: 700;
    color: #222222;
    margin: 0 0 10px 0;
}

.os-expert-text p {
    font-size: 15px;
    color: #555555;
    line-height: 1.6;
    margin: 0;
    word-break: keep-all;
}

.os-expert-right {
    flex: 1;
}

.os-expert-diff-card {
    background-color: #ffffff;
    border-radius: 16px;
    padding: 40px 32px;
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.06);
    height: 100%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border: 1px solid rgba(0,0,0,0.05);
}

.os-expert-diff-title {
    font-size: 20px;
    font-weight: 700;
    color: #111111;
    margin: 0 0 28px 0;
    text-align: center;
}

.os-expert-diff-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.os-expert-diff-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    border-radius: 12px;
    background-color: #fcfcfc;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.os-expert-diff-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.04);
}

.os-expert-diff-item.bad {
    border-left: 4px solid #ff4d4f;
}

.os-expert-diff-item.good {
    border-left: 4px solid #52c41a;
    background-color: #f6ffed;
}

.os-expert-diff-icon {
    font-weight: 900;
    font-size: 16px;
    width: 24px;
    text-align: center;
}

.os-expert-diff-item.bad .os-expert-diff-icon {
    color: #ff4d4f;
}

.os-expert-diff-item.good .os-expert-diff-icon {
    color: #52c41a;
}

.os-expert-diff-text {
    font-size: 15px;
    color: #333333;
    line-height: 1.4;
    font-weight: 500;
}

.os-review-section {
    padding: 80px 24px;
    background-color: #f8f9fa;
}

.os-review-title {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    color: #1a1a2e;
    margin: 0 0 40px 0;
}

.os-review-container {
    max-width: 100%;
    margin: 0 auto;
    padding: 0;
}

.os-review-row {
    overflow: hidden;
    margin-bottom: 24px;
}

.os-review-section:hover .os-review-track {
    animation-play-state: paused;
}

.os-review-row:last-child {
    margin-bottom: 0;
}

.os-review-track {
    display: flex;
    gap: 24px;
    width: max-content;
}

.os-review-track-right {
    animation: os-review-slide-right 60s linear infinite;
}

.os-review-track-left {
    animation: os-review-slide-left 60s linear infinite;
}

@keyframes os-review-slide-right {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@keyframes os-review-slide-left {
    0% { transform: translateX(-50%); }
    100% { transform: translateX(0); }
}

.os-review-card {
    flex-shrink: 0;
    width: 360px;
    background-color: #fff;
    border-radius: 16px;
    padding: 24px 26px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.os-review-card:hover {
    transform: translateY(-5px);
}

.os-review-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.os-review-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: #8b5cf6;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    margin-right: 15px;
    flex-shrink: 0;
}

.os-review-info {
    display: flex;
    flex-direction: column;
}

.os-review-name {
    font-weight: 700;
    font-size: 16px;
    color: #333;
    margin-bottom: 4px;
}

.os-review-role {
    font-size: 13px;
    color: #666;
}

.os-review-text {
    font-size: 15px;
    color: #444;
    line-height: 1.6;
    flex-grow: 1;
    margin-bottom: 20px;
}

.os-review-stars {
    font-size: 16px;
    letter-spacing: 2px;
}