/* ============================================================
   인덱스(첫 페이지) 스타일 — Uni 스타일 참고
   섹션: Hero / Features / About / Courses
   ============================================================ */

.index-page {
    width: 100%;
    overflow-x: hidden;
}

/* ------------------------------------------------------------
   Hero
------------------------------------------------------------ */

.hero {
    position: relative;
    width: 100%;
    background:
        linear-gradient(100deg, rgba(20, 22, 34, 0.78) 0%, rgba(20, 22, 34, 0.45) 55%, rgba(20, 22, 34, 0.25) 100%),
        url('/steng/static/photo/frontbg.jpg') no-repeat center 30%;
    background-size: cover;
}

.hero-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 90px 24px;
    display: grid;
    grid-template-columns: 1fr;
    align-items: center;
    box-sizing: border-box;
}

.hero-title {
    font-family: var(--font-head);
    font-size: clamp(2.6rem, 5.5vw, 4.4rem);
    font-weight: 700;
    color: #fff;
    line-height: 1.12;
    letter-spacing: -1.5px;
    margin: 0 0 26px;
}

.hero-sub {
    font-size: 1.08rem;
    color: rgba(255, 255, 255, 0.88);
    line-height: 1.8;
    max-width: 460px;
    margin: 0 0 56px;
}

.hero-stat-number {
    font-family: var(--font-head);
    font-size: clamp(4rem, 8vw, 6.5rem);
    font-weight: 700;
    color: var(--c-yellow);
    line-height: 1;
    margin-bottom: 18px;
}

.hero-stat-row {
    display: flex;
    align-items: center;
    gap: 18px;
}

.hero-avatars {
    display: flex;
    align-items: center;
}

.hero-avatars img,
.hero-avatar-plus {
    width: 58px;
    height: 58px;
    border-radius: 50%;
    border: 3px solid #fff;
    object-fit: cover;
    box-sizing: border-box;
}

.hero-avatars img + img,
.hero-avatars .hero-avatar-plus {
    margin-left: -16px;
}

.hero-avatar-plus {
    background: #fff;
    color: var(--c-navy);
    font-size: 1.6rem;
    font-weight: 400;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.hero-stat-caption {
    color: #fff;
    font-weight: 700;
    font-size: 1.05rem;
    line-height: 1.45;
}

/* ------------------------------------------------------------
   섹션 공통
------------------------------------------------------------ */

.features,
.about,
.courses {
    position: relative;
    padding: 100px 24px;
}

.section-cta {
    text-align: center;
    margin-top: 54px;
}

/* 장식 요소 */
.deco-hello {
    position: absolute;
    top: 90px;
    left: 6%;
    font-family: var(--font-head);
    font-weight: 700;
    font-size: 1.9rem;
    letter-spacing: 4px;
    color: var(--c-purple);
    transform: rotate(-14deg);
    border-top: 4px solid var(--c-purple);
    border-bottom: 4px solid var(--c-purple);
    padding: 6px 4px;
    user-select: none;
}

.deco-ciao {
    display: block;
    font-family: 'Caveat', cursive;
    font-size: 3.4rem;
    font-weight: 700;
    color: var(--c-orange);
    transform: rotate(-6deg);
    margin: 8px 0 2px;
    user-select: none;
}

.deco-bubble {
    position: absolute;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: 'Caveat', cursive;
    font-size: 1.9rem;
    font-weight: 700;
    color: #fff;
    width: 110px;
    height: 86px;
    user-select: none;
}

.deco-fli {
    right: 8%;
    bottom: 60px;
    background: var(--c-blue);
    border-radius: 60% 60% 60% 8%;
    transform: rotate(-8deg);
}

.deco-merhaba {
    left: 5%;
    top: 110px;
    background: var(--c-pink);
    color: #3a2a10;
    border-radius: 60% 60% 8% 60%;
    transform: rotate(-10deg);
}

.deco-gutentag {
    right: 6%;
    bottom: 50px;
    background: var(--c-purple);
    border-radius: 60% 8% 60% 60%;
    transform: rotate(8deg);
    font-size: 1.5rem;
}

/* ------------------------------------------------------------
   Features
------------------------------------------------------------ */

.features {
    background: var(--c-cream);
}

.features-grid {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--c-cream-light);
    border: 1px solid var(--c-line);
    padding: 38px 30px 34px;
    text-decoration: none;
    color: var(--c-navy);
    display: flex;
    flex-direction: column;
    min-height: 250px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 36px rgba(31, 35, 51, 0.12);
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin-bottom: auto;
    /* 회색 SVG 아이콘을 테마 프라이머리(블루) 톤으로 변환 */
    filter: brightness(0) saturate(100%) invert(40%) sepia(15%) saturate(1900%) hue-rotate(180deg) brightness(93%) contrast(87%);
}

.feature-card h3 {
    font-family: var(--font-head);
    font-size: 1.45rem;
    font-weight: 600;
    letter-spacing: -0.5px;
    margin: 80px 0 10px;
}

.feature-card p {
    font-size: 0.95rem;
    color: var(--c-navy-soft);
    line-height: 1.65;
    margin: 0;
}

/* ------------------------------------------------------------
   About
------------------------------------------------------------ */

.about {
    background: #fff;
}

.about-inner {
    max-width: 1180px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 70px;
    align-items: center;
}

.about-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    aspect-ratio: 1 / 1;
}

.about-eyebrow {
    text-align: left;
}

.about-title {
    font-family: var(--font-head);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    letter-spacing: -1px;
    line-height: 1.15;
    margin: 0 0 24px;
    color: var(--c-navy);
}

.about-desc {
    font-size: 1rem;
    color: var(--c-navy-soft);
    line-height: 1.85;
    margin: 0 0 22px;
}

.about-question {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--c-navy);
    margin: 0 0 10px;
}

.about-subtitle {
    font-family: var(--font-head);
    font-size: 1.4rem;
    font-weight: 600;
    letter-spacing: -0.5px;
    color: var(--c-navy);
    margin: 0 0 12px;
}

/* ------------------------------------------------------------
   Courses
------------------------------------------------------------ */

.courses {
    background: var(--c-cream);
}

.courses-grid {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 28px;
}

.course-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 6px 22px rgba(31, 35, 51, 0.07);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.course-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 40px rgba(31, 35, 51, 0.14);
}

.course-thumb-link {
    display: block;
    overflow: hidden;
}

.course-thumb {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.course-card:hover .course-thumb {
    transform: scale(1.04);
}

.course-body {
    padding: 22px 24px 6px;
    flex: 1;
}

.course-stars {
    color: #F5A623;
    letter-spacing: 4px;
    font-size: 1rem;
    margin-bottom: 10px;
}

.course-name {
    font-family: var(--font-head);
    font-size: 1.35rem;
    font-weight: 600;
    letter-spacing: -0.5px;
    color: var(--c-navy);
    margin: 0 0 8px;
}

.course-meta {
    font-size: 0.9rem;
    color: var(--c-navy-soft);
    margin: 0 0 16px;
}

.course-author {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.92rem;
    color: var(--c-navy);
    margin-bottom: 12px;
}

.course-author img {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    object-fit: cover;
}

.course-foot {
    padding: 0 24px 24px;
}

.course-btn {
    width: 100%;
    box-sizing: border-box;
}

/* ------------------------------------------------------------
   반응형
------------------------------------------------------------ */

@media (max-width: 1024px) {
    .hero-inner {
        grid-template-columns: 1fr;
        gap: 44px;
        padding: 60px 20px;
    }

    .hero-sub {
        margin-bottom: 36px;
    }

    .deco-hello {
        position: static;
        display: inline-block;
        margin: 0 0 26px 4px;
        font-size: 1.4rem;
    }

    .features {
        text-align: center;
    }

    .about-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 640px) {
    .features,
    .about,
    .courses {
        padding: 64px 18px;
    }

    .deco-bubble {
        width: 84px;
        height: 64px;
        font-size: 1.4rem;
    }

    .deco-fli,
    .deco-gutentag {
        bottom: 18px;
        right: 4%;
    }

    .deco-merhaba {
        top: 64px;
        left: 3%;
    }

    .feature-card h3 {
        margin-top: 46px;
    }

    .feature-card {
        min-height: 0;
    }
}