/* =========================
    Base Reset & Tokens
    ========================= */
:root {
    --brand-blue: #1a73e8;
    --brand-pink: #ea6d9f;
    --ink-900: #0f172a;
    --ink-700: #334155;
    --ink-500: #64748b;
    --ink-300: #cbd5e1;
    --ink-100: #e2e8f0;
    --bg-50: #f8fafc;
    --bg-00: #ffffff;
    --radius-xl: 16px;
    --radius-lg: 12px;
    --shadow-1: 0 6px 22px rgba(2, 8, 23, 0.08);
    --shadow-2: 0 10px 34px rgba(2, 8, 23, 0.12);
    --container-w: 1160px;
    /* 애니메이션 속도 */
    --reveal-duration: .6s;
    --reveal-ease: cubic-bezier(.21,.61,.35,1);
    /* 마키(흘러가기) 속도: 값이 클수록 느림 (초) */
    --marquee-duration: 28s;
    /* 가장자리 페이드 마스크 폭 */
    --marquee-fade: 32px;
    /* Hero slider */
    --hero-slide-duration: 500ms;
    --hero-autoplay: 5000ms;
    --hero-gap: 24px;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

body {
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Apple SD Gothic Neo, Noto Sans KR, "Malgun Gothic", Arial, "Apple Color Emoji", "Segoe UI Emoji";
    color: var(--ink-900);
    background: var(--bg-50);
    line-height: 1.5;
}

a {
    color: inherit;
    text-decoration: none;
}

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

.container {
    width: 100%;
    max-width: var(--container-w);
    margin: 0 auto;
    /* padding: 0 20px; */
}

/* =========================
    Header / Nav
    ========================= */
.header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(10px);
    /* border-bottom: 1px solid var(--ink-100); */
}

.header_inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: 10px;
}

.brand_mark {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--brand-blue), var(--brand-pink));
    box-shadow: var(--shadow-1);
    display: none;
}

.brand_text {
    font-weight: 700;
    letter-spacing: 0.2px;
    color: var(--brand-pink);
    display: none;
}

.brand_logo {
    width: 60px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 18px;
}

.nav_link {
    color: var(--ink-700);
    font-weight: 500;
}

.nav_link:hover {
    color: var(--ink-900);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 32px;
    padding: 0 16px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 600;
    cursor: pointer;
    transition: transform .04s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
    user-select: none;
}

.btn:active {
    transform: translateY(1px);
}

.btn_primary {
    /* background: var(--brand-blue); */
    /* color: #fff; */
    box-shadow: var(--shadow-1);
    color: var(--ink-700);
}

.btn_primary:hover {
    background: #155cc2;
    color: #fff;
}

.btn_outline {
    background: #fff;
    border-color: var(--ink-100);
    color: var(--ink-900);
}

.btn_outline:hover {
    border-color: var(--ink-300);
}

.nav_toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    border: 1px solid var(--ink-100);
    background: #fff;
    gap: 4px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: none;
    margin-right: 10px;
}

.nav_toggle_bar {
    width: 20px;
    height: 2px;
    background: var(--ink-900);
    border-radius: 2px;
}

@media (max-width: 960px) {
    .nav {
        display: none;
        position: absolute;
        top: 64px;
        right: 0;
        left: 0;
        flex-direction: column;
        background: #fff;
        border-bottom: 1px solid var(--ink-100);
        padding: 16px;
    }

    .nav.is_open {
        display: flex;
    }

    .nav_toggle {
        display: inline-flex;
    }
}

/* =========================
    Hero (Tall)
    ========================= */
.hero {
    /* 화면에 꽉 차되 최대 1000px */
    min-height: min(1000px, 100vh);
    display: flex;
    align-items: center;
    padding: 72px 0 40px;
    background: radial-gradient(1200px 400px at 50% -120px, rgba(26,115,232,0.12), transparent 60%), linear-gradient(180deg, #fff, #f9fbff);
    border-bottom: 1px solid var(--ink-100);
    background: #fff;
}

.hero_slider {
    position: relative;
    isolation: isolate;
}

.hero_viewport {
    overflow: hidden;
    border-radius: 20px;
}

.hero_track {
    display: flex;
    gap: var(--hero-gap);
    will-change: transform;
    /* 초기 위치는 JS에서 설정 */
    transition: transform var(--hero-slide-duration) var(--reveal-ease);
    touch-action: pan-y;
    /* 세로 스크롤 방해 최소화 */
}

.hero_slide {
    flex: 0 0 100%;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 36px;
    align-items: center;
    padding: 24px;
    min-height: calc(var(--section-min) - 72px - 40px);
    /* hero padding 제외 */
}

.hero_slide .hero_title {
    font-size: 56px;
    line-height: 1.15;
    margin: 0 0 14px;
    letter-spacing: -0.4px;
}

.hero_slide .hero_sub {
    font-size: 18px;
    color: var(--ink-700);
    margin: 0 0 22px;
}

.hero_cta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    display: none;
}

.hero_badges {
    display: flex;
    gap: 12px;
    margin-top: 18px;
    flex-wrap: wrap;
    display: none;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 32px;
    padding: 0 12px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--ink-100);
    color: var(--ink-700);
}

.mockup {
    background: #fff;
    border: 1px solid var(--ink-100);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2);
    padding: 18px;
}

.mockup_screen {
    height: 320px;
    border-radius: 12px;
    background: repeating-linear-gradient(45deg, #eef2ff 0 12px, #e9ecf8 12px 24px);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding: 12px;
    height: 70vh;
}

.mockup_card {
    border-radius: 12px;
    background: #fff;
    border: 1px solid var(--ink-100);
    box-shadow: var(--shadow-1);
    padding: 14px;
}

/* Pagination dots */
.hero_dots {
    position: absolute;
    left: 50%;
    bottom: 16px;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(255,255,255,.6);
    backdrop-filter: blur(6px);
    /* border: 1px solid var(--ink-100); */
}

.hero_dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--ink-300);
    border: 0;
    padding: 0;
    cursor: pointer;
}

.hero_dot.is_active {
    background: var(--brand-blue)
}

@media (max-width: 960px) {
    .hero_slide {
        grid-template-columns:1fr;
        gap: 20px;
        padding: 18px
    }

    .hero_slide .hero_title {
        font-size: 34px
    }

    .mockup_screen {
        height: 240px
    }

    .mockup_screen {
        height: 240px;
    }

    .hero_title {
        font-size: 34px;
    }
}

/* =========================
    Section Common (Tall)
    ========================= */
.section {
    min-height: min(1000px, 100vh);
    display: flex;
    align-items: center;
    padding: 72px 0;
    padding: 0 10px;
}

.section_head {
    margin-bottom: 83px;
}

.section_kicker {
    font-weight: 700;
    color: var(--brand-blue);
    letter-spacing: 0.3px;
    margin-bottom: 10px;
    width: 100%;
}

.section_title {
    font-size: 53px;
    margin: 0 0 10px;
    color: #4e545b;
    text-align: left;
}

.section_desc {
    color: var(--ink-700);
    margin: 0;
    color: #4e545b;
}

/* =========================
    Features
    ========================= */
.features_wrap {
    width: 100%
}

.features_head {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 16px;
    margin-bottom: 184px;
}

.features_desc {
    color: var(--ink-700)
}

.features_marquee {
    position: relative;
    overflow: hidden;
    /* 가장자리 페이드(옵션) */
    -webkit-mask-image: linear-gradient(to right, transparent 0, black var(--marquee-fade), black calc(100% - var(--marquee-fade)), transparent 100%);
    mask-image: linear-gradient(to right, transparent 0, black var(--marquee-fade), black calc(100% - var(--marquee-fade)), transparent 100%);
    border-radius: 14px;
    padding: 8px;
    /* 그림자 안잘리도록 */
    user-select: none;
    /* width: 92vw; */
    /* margin-left: -6vw; */
}

.marquee_track {
    display: flex;
    gap: 14px;
    width: max-content;
    /* 내용만큼 */
    will-change: transform;
    animation: marquee var(--marquee-duration) linear infinite;
}

.marquee_track.reverse {
    display: flex;
    gap: 14px;
    width: max-content;
    /* 내용만큼 */
    will-change: transform;
    animation: marquee_reverse var(--marquee-duration) linear infinite;
    margin-top: 25px;
}

/* 호버 시 일시정지하려면 아래 주석 해제
.features_marquee:hover .marquee_track { animation-play-state: paused; }
*/
/* 핵심: 동일 그룹을 2세트 배치 → 50% 이동하면 무봉제 루프 */
.marquee_group {
    display: flex;
    gap: 14px
}

.feature_card {
    /* flex: 0 0 clamp(240px, 28vw, 320px); */
    background: #fff;
    border: 1px solid var(--ink-100);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-1);
    padding: 18px;
    /* border-radius: 50px; */
    border-radius: 15px;
    display: flex;
    flex-direction: row;
}

.feature_icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: linear-gradient(135deg,var(--brand-blue),#83b6ff);
    margin-bottom: 12px
}

.feature_img {
    width: 90px;
    border-radius: 30px;
}

.feature_text_wrap {
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin-left: 18px;
}

.feature_title {
    margin: 0 0 8px;
    font-size: 18px
}

.feature_desc {
    margin: 0;
    color: var(--ink-700);
    font-size: 14px
}

@keyframes marquee {
    from {
        transform: translateX(0);
    }

    to {
        transform: translateX(-50%);
    }

    /* 정확히 절반만 이동 → 무봉제 */
}

@keyframes marquee_reverse {
    from {
        transform: translateX(-50%);
    }

    to {
        transform: translateX(0);
    }

    /* 정확히 절반만 이동 → 무봉제 */
}

/* =========================
    How (Steps)
    ========================= */
.how_grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.how_step {
    background: #24272c;
    /* border: 1px solid var(--ink-100); */
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-1);
    padding: 28px 20px;
    position: relative;
    color: #fff;
}

.step_badge {
    position: relative;
    top: -6px;
    left: 0;
    height: 28px;
    padding: 0 10px;
    border-radius: 999px;
    /* background: var(--brand-pink); */
    color: #fff;
    font-weight: 700;
    font-size: 20px;
    display: inline-flex;
    align-items: center;
    color: var(--brand-pink);
    width: 100%;
    justify-content: center;
}

.how_step_wrap_1 {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.how_step_wrap_2 {
    margin-top: 20px;
}

.how_img {
    width: 105px;
    height: 105px;
    border-radius: 4px;
    margin: 10px;
}

.how_title {
    margin: 0px 0 8px;
    font-weight: 700;
}

.how_desc {
    margin: 0;
    color: var(--ink-700);
    color: #d7dade;
}

@media (max-width: 960px) {
    .how_grid {
        grid-template-columns: 1fr;
    }
}

/* =========================
    Benefits (Stats)
    ========================= */
.benefits {
    background: linear-gradient(180deg, #fff, #f7fbff);
    border-top: 1px solid var(--ink-100);
    /* border-bottom: 1px solid var(--ink-100); */
    padding-top: 30px;
}

.benefits_grid {
    /* display: flex; */
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    column-gap: 100px;
    flex-direction: row;
    flex-wrap: wrap;
}

.benefit_item {
    /* background: #fff; */
    /* border: 1px solid var(--ink-100); */
    /* border-radius: var(--radius-lg); */
    /* box-shadow: var(--shadow-1); */
    /* padding: 18px; */
    /* text-align: center; */
    margin-top: 55px;
}

.benefit_title {
    margin-top: 15px;
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 7px;
}

.benefit_desc {
    margin: 0;
    font-size: 18px;
}

.benefit_item_card {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 310px;
    border-radius: 30px;
    background: #f7f8fa;
    flex-direction: row;
    gap: 35px;
}

.benefit_value {
    font-size: 28px;
    font-weight: 800;
    color: var(--brand-blue);
    margin-bottom: 6px;
}

.benefit_label {
    color: var(--ink-700);
}

.benefit_img_icon {
    width: 30%;
    border-radius: 5px;
}

.benefit_img_pic {
    width: 45%;
    border-radius: 15px;
    max-height: 300px;
}

@media (max-width: 960px) {
    .benefits_grid {
        grid-template-columns: repeat(1, 1fr);
    }
}

/* =========================
    Usecases
    ========================= */
.use_grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.use_card {
    background: #fff;
    border: 1px solid var(--ink-100);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-1);
    padding: 18px;
}

.use_title {
    margin: 0 0 8px;
}

.use_desc {
    margin: 0;
    color: var(--ink-700);
}

@media (max-width: 960px) {
    .use_grid {
        grid-template-columns: 1fr;
    }
}

/* =========================
    FAQ (Accordion)
    ========================= */
.faq_list {
    display: grid;
    gap: 12px;
}

.faq_item {
    background: #fff;
    border: 1px solid var(--ink-100);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-1);
    overflow: hidden;
}

.faq_q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 16px 18px;
    background: #fff;
    border: 0;
    text-align: left;
    cursor: pointer;
    font-weight: 700;
}

.faq_a {
    padding: 0 18px 16px;
    color: var(--ink-700);
    display: none;
}

.faq_item.is_open .faq_a {
    display: block;
}

.faq_icon {
    width: 20px;
    height: 20px;
    border-radius: 6px;
    border: 1px solid var(--ink-300);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

/* =========================
    CTA Banner & Footer
    ========================= */
.cta_banner {
    background: #0b3b8f;
    color: #fff;
    border-radius: var(--radius-xl);
    padding: 26px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 14px;
    align-items: center;
    box-shadow: var(--shadow-2);
}

.cta_text {
    margin: 0;
    opacity: 0.95;
}

.footer {
    padding: 36px 0;
    color: var(--ink-700);
}

.footer_grid {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 16px;
    align-items: center;
    border-top: 1px solid var(--ink-100);
    padding-top: 18px;
    margin-top: 18px;
}

.socials {
    display: flex;
    gap: 10px;
}

.social_btn {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: #fff;
    border: 1px solid var(--ink-100);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* =========================
    Smooth Reveal (In & Out)
    - is_inview: 보일 때 페이드+상승
    - is_outview: 사라질 때 살짝 축소+블러
    ========================= */
.reveal {
    opacity: 0;
    transform: translateY(12px) scale(1);
    filter: blur(0);
    transition: opacity var(--reveal-duration) var(--reveal-ease), transform var(--reveal-duration) var(--reveal-ease), filter var(--reveal-duration) var(--reveal-ease);
    will-change: opacity, transform, filter;
}

.reveal.is_inview {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
}

.reveal.is_outview {
    opacity: 0;
    transform: translateY(10px) scale(.98);
    filter: blur(2px);
}

/* 모션 최소화 환경 */
@media (prefers-reduced-motion: reduce) {
    .reveal, .reveal.is_inview, .reveal.is_outview {
        transition: none !important;
        opacity: 1 !important;
        transform: none !important;
        filter: none !important;
    }
}