:root {
    --navy-950: #061426;
    --navy-900: #081d36;
    --navy-800: #0b2a4c;
    --blue-700: #0b4f8a;
    --blue-600: #1265aa;
    --blue-100: #eaf3fb;
    --green-600: #168a64;
    --green-500: #20a778;
    --green-100: #e9f8f2;
    --ink-900: #122033;
    --ink-700: #3c4d62;
    --ink-500: #66758a;
    --line: #dfe7ef;
    --soft: #f5f8fb;
    --white: #fff;
    --shadow-sm: 0 8px 24px rgba(6, 20, 38, .06);
    --shadow-md: 0 18px 48px rgba(6, 20, 38, .10);
    --radius: 16px;
    --radius-lg: 24px;
    --container: 1180px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    min-width: 320px;
    background: var(--white);
    color: var(--ink-900);
    font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(223, 231, 239, .9);
    background: rgba(255, 255, 255, .96);
    box-shadow: 0 4px 20px rgba(6, 20, 38, .04);
    backdrop-filter: blur(14px);
}
.header-container { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.logo { flex: 0 0 auto; min-width: 0; }
.logo-text { display: inline-flex; align-items: center; }
.logo-text img { width: 230px; height: auto; object-fit: contain; object-position: left center; }
.main-nav ul { display: flex; align-items: center; gap: 5px; }
.main-nav a {
    position: relative;
    display: block;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--ink-700);
    font-size: 14px;
    font-weight: 650;
    line-height: 1.25;
    white-space: nowrap;
    transition: color .18s ease, background .18s ease;
}
.main-nav a:hover, .main-nav a.active { background: var(--blue-100); color: var(--blue-700); }
.main-nav a.active::after {
    content: "";
    position: absolute;
    right: 12px;
    bottom: 3px;
    left: 12px;
    height: 2px;
    border-radius: 99px;
    background: var(--blue-600);
}
.mobile-menu-btn {
    width: 44px;
    height: 44px;
    display: none;
    place-items: center;
    flex: 0 0 44px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #fff;
    color: var(--navy-900);
    font: inherit;
    font-size: 23px;
    cursor: pointer;
}

/* Shared typography and sections */
section { padding: 88px 0; }
section:nth-of-type(even) { background: var(--soft); }
.section-title {
    color: var(--navy-900);
    font-size: clamp(29px, 3.2vw, 40px);
    font-weight: 780;
    letter-spacing: -.035em;
    line-height: 1.2;
    text-align: center;
}
.section-title::after {
    content: "";
    display: block;
    width: 46px;
    height: 3px;
    margin: 18px auto 0;
    border-radius: 99px;
    background: var(--green-500);
}
.section-subtitle {
    max-width: 780px;
    margin: 15px auto 40px;
    color: var(--ink-500);
    font-size: 16px;
    text-align: center;
}
.intro-text, .mission-box, .vision-box, .global-content, .message-box {
    position: relative;
    max-width: 900px;
    margin: 38px auto 0;
    padding: 38px 44px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--white);
    box-shadow: var(--shadow-md);
    color: var(--ink-700);
    font-size: 17px;
}
.intro-text::before, .mission-box::before, .vision-box::before, .global-content::before, .message-box::before {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: 6px;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    background: linear-gradient(var(--blue-600), var(--green-500));
}
.mission-box p + p, .vision-box p + p, .message-box p + p { margin-top: 16px; }
.highlight-text, .vision-quote, .timeline-content .highlight {
    margin-top: 20px;
    padding: 16px 18px;
    border-left: 3px solid var(--green-500);
    border-radius: 0 10px 10px 0;
    background: var(--green-100);
    color: #12684e;
    font-weight: 650;
}

/* Home */
.hero {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    padding: 108px 0 100px;
    background:
        radial-gradient(circle at 82% 20%, rgba(32,167,120,.20), transparent 28%),
        radial-gradient(circle at 12% 78%, rgba(18,101,170,.25), transparent 30%),
        linear-gradient(135deg, var(--navy-950), var(--navy-800) 58%, #0b3e68);
    color: #fff;
    text-align: center;
}
.hero h1 {
    max-width: 1000px;
    margin: 0 auto 22px;
    font-size: clamp(38px, 5vw, 62px);
    font-weight: 780;
    letter-spacing: -.045em;
    line-height: 1.12;
}
.hero h1 .highlight { color: #55d7ab; }
.hero > .container > p { max-width: 800px; margin: auto; color: rgba(255,255,255,.8); font-size: 19px; }
.hero-stat {
    max-width: 760px;
    margin: 38px auto 0;
    padding: 24px 30px;
    border: 1px solid rgba(255,255,255,.16);
    border-radius: var(--radius);
    background: rgba(255,255,255,.08);
    color: rgba(255,255,255,.88);
    box-shadow: 0 20px 60px rgba(0,0,0,.16);
    backdrop-filter: blur(12px);
}
.hero-stat > strong { color: #55d7ab; font-size: 32px; }
.hero-stat span { display: block; margin-top: 7px; }
.hero-stat span strong { color: #55d7ab !important; }
.mission .content-box {
    position: relative;
    max-width: 900px;
    margin: 38px auto 0;
    padding: 42px 48px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: #fff;
    box-shadow: var(--shadow-md);
}
.mission .content-box p { color: var(--ink-700); font-size: 17px; }
.mission .content-box p + p { margin-top: 16px; }
.mission .content-box strong { color: var(--blue-700); }
.stats-grid { max-width: 920px; margin: 44px auto 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.stat-card, .stat-item {
    min-height: 170px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 28px 20px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: linear-gradient(145deg, #fff, #f9fbfd);
    box-shadow: var(--shadow-sm);
    text-align: center;
}
.stat-number { color: var(--blue-700); font-size: clamp(34px, 4vw, 46px); font-weight: 800; letter-spacing: -.04em; line-height: 1.1; }
.stat-number.green { color: var(--green-600); }
.stat-label { margin-top: 10px; color: var(--ink-500); font-size: 15px; font-weight: 650; }
.partners-logos { max-width: 980px; margin: 40px auto 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.partners-logos span { min-height: 88px; display: grid; place-items: center; padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: #fff; box-shadow: var(--shadow-sm); color: var(--ink-700); font-weight: 700; text-align: center; }

/* Services */
.business-intro, .culture-intro, .social-mission {
    padding: 92px 0 78px;
    background: linear-gradient(180deg, #eef5fb 0%, #f8fafc 100%) !important;
}
.business-grid-large { display: grid; gap: 28px; margin-top: 44px; }
.business-card-large {
    display: grid;
    grid-template-columns: .9fr 1.1fr;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: #fff;
    box-shadow: var(--shadow-sm);
}
.business-card-large.reverse .business-img-large { order: 2; }
.business-img-large { min-height: 360px; overflow: hidden; }
.business-img-large img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
.business-card-large:hover img { transform: scale(1.035); }
.business-content { display: flex; flex-direction: column; justify-content: center; padding: 44px; }
.business-content h3, .advantage-card h3, .culture-card h3, .charity-card h3, .mv-card h3, .timeline-content h3 {
    color: var(--navy-900);
    font-size: 22px;
    line-height: 1.3;
}
.business-content > p { margin-top: 14px; color: var(--ink-700); }
.business-features { display: grid; gap: 10px; margin-top: 22px; }
.business-features li { position: relative; padding-left: 26px; color: var(--ink-700); }
.business-features li::before { content: "✓"; position: absolute; left: 0; color: var(--green-600); font-weight: 800; }
.global-features { display: grid; gap: 12px; margin-top: 24px; }
.global-feature { display: flex; align-items: center; gap: 14px; padding: 14px 16px; border-radius: 10px; background: var(--soft); }
.gf-icon { font-size: 24px; }
.advantage-grid, .culture-grid, .charity-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 42px;
}
.advantage-card, .culture-card, .charity-card, .mv-card {
    padding: 34px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
    box-shadow: var(--shadow-sm);
}
.advantage-icon, .culture-icon, .charity-icon {
    width: 54px;
    height: 54px;
    display: grid;
    place-items: center;
    margin-bottom: 20px;
    border-radius: 14px;
    background: var(--blue-100);
    font-size: 27px;
}
.advantage-card > p, .culture-card > p, .charity-card > p { margin-top: 13px; color: var(--ink-700); }
.adv-detail, .cul-detail { padding-top: 14px; border-top: 1px solid var(--line); color: var(--ink-500) !important; }

/* Culture */
.values-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 38px; }
.value-badge { display: block; padding: 13px 22px; border: 1px solid #bcd4e8; border-radius: 99px; background: #fff; color: var(--blue-700); font-weight: 700; box-shadow: var(--shadow-sm); }
.timeline { position: relative; max-width: 900px; margin: 46px auto 0; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; top: 8px; bottom: 8px; left: 8px; width: 2px; background: #c9dceb; }
.timeline-item { position: relative; padding: 0 0 34px 28px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot { position: absolute; top: 7px; left: -32px; width: 16px; height: 16px; border: 4px solid #fff; border-radius: 50%; background: var(--green-500); box-shadow: 0 0 0 2px var(--green-500); }
.timeline-content { padding: 28px 30px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); }
.timeline-year { display: inline-block; margin-bottom: 10px; padding: 5px 11px; border-radius: 99px; background: var(--blue-100); color: var(--blue-700); font-size: 14px; font-weight: 800; }
.timeline-content p { margin-top: 12px; color: var(--ink-700); }

/* Social */
.partnership-content { max-width: 900px; margin: 40px auto 0; }
.partnership-text { padding: 40px 44px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-md); }
.partnership-text p { color: var(--ink-700); }
.partnership-text p + p { margin-top: 17px; }

/* About */
.video-section { padding: 0; background: var(--navy-950) !important; }
.video-wrapper { width: 100%; max-height: 650px; overflow: hidden; }
.video-wrapper video { width: 100%; max-height: 650px; object-fit: cover; cursor: pointer; }
.mission-vision-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 42px; }
.mv-card p { margin-top: 14px; color: var(--ink-700); }
.info-grid { max-width: 960px; margin: 42px auto 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.info-item { display: flex; flex-direction: column; gap: 5px; padding: 22px; border: 1px solid var(--line); border-radius: 12px; background: #fff; box-shadow: var(--shadow-sm); }
.info-label { color: var(--ink-500); font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; }
.info-value { color: var(--navy-900); font-weight: 650; }
.link-primary { color: var(--blue-600); text-decoration: underline; text-underline-offset: 3px; }
.cert-grid { max-width: 900px; margin: 42px auto 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.cert-card { overflow: hidden; padding: 18px 18px 24px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); text-align: center; cursor: zoom-in; }
.cert-card img { width: 100%; height: 270px; border-radius: 10px; object-fit: cover; object-position: top; }
.cert-card h4 { margin-top: 17px; color: var(--navy-900); font-size: 18px; }
.cert-card p { color: var(--ink-500); font-size: 14px; }
.partner-group { margin-top: 42px; }
.partner-group-title { margin-bottom: 20px; color: var(--navy-900); font-size: 20px; text-align: center; }
.partner-swiper .swiper-wrapper { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.partner-card { min-height: 190px; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 22px 14px; border: 1px solid var(--line); border-radius: 14px; background: #fff; box-shadow: var(--shadow-sm); text-align: center; }
.partner-card img { width: 110px; height: 68px; margin-bottom: 14px; object-fit: contain; }
.partner-card h4 { color: var(--navy-900); font-size: 15px; }
.partner-card p { margin-top: 4px; color: var(--ink-500); font-size: 13px; }
.swiper-pagination, .swiper-button-prev, .swiper-button-next { display: none; }
.message-sign { color: var(--blue-700); font-weight: 750; text-align: right; }
.modal-overlay { position: fixed; inset: 0; z-index: 2000; display: none; align-items: center; justify-content: center; padding: 24px; background: rgba(2, 12, 24, .86); }
.modal-overlay.active { display: flex; }
.modal-content { position: relative; max-width: 960px; max-height: 92vh; padding: 18px; border-radius: 16px; background: #fff; box-shadow: 0 30px 80px rgba(0,0,0,.35); }
.modal-content img { max-height: calc(92vh - 90px); margin: auto; object-fit: contain; }
.modal-close { position: absolute; top: 10px; right: 10px; z-index: 1; width: 38px; height: 38px; border: 0; border-radius: 50%; background: var(--navy-900); color: #fff; cursor: pointer; }
.modal-title { padding-top: 10px; color: var(--navy-900); font-weight: 700; text-align: center; }

@media (max-width: 1060px) {
    .header-container { min-height: 70px; }
    .logo-text img { width: 205px; height: auto; }
    .main-nav { position: absolute; top: calc(100% + 1px); right: 0; left: 0; display: none; padding: 14px 20px 20px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.98); box-shadow: 0 16px 30px rgba(6,20,38,.1); }
    .main-nav.open { display: block; }
    .main-nav ul { width: min(100%, var(--container)); margin: auto; display: grid; gap: 6px; }
    .main-nav a { padding: 12px 14px; text-align: center; }
    .main-nav a.active::after { display: none; }
    .mobile-menu-btn { display: grid; }
    .partner-swiper .swiper-wrapper { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 760px) {
    .container { width: min(calc(100% - 28px), var(--container)); }
    section { padding: 64px 0; }
    .logo-text img { width: 180px; height: auto; }
    .hero { padding: 76px 0 68px; }
    .hero h1 { font-size: clamp(31px, 10vw, 44px); }
    .hero h1 br { display: none; }
    .hero > .container > p { font-size: 16px; }
    .hero-stat { margin-top: 28px; padding: 20px 16px; font-size: 14px; }
    .hero-stat > strong { display: block; font-size: 28px; }
    .section-title { font-size: 29px; }
    .section-subtitle { margin-bottom: 30px; }
    .intro-text, .mission-box, .vision-box, .global-content, .message-box, .partnership-text { padding: 28px 24px 28px 30px; font-size: 15.5px; }
    .mission .content-box { padding: 30px 24px; }
    .stats-grid, .advantage-grid, .culture-grid, .charity-grid, .mission-vision-grid, .info-grid, .cert-grid { grid-template-columns: 1fr; gap: 14px; }
    .business-card-large { grid-template-columns: 1fr; }
    .business-card-large.reverse .business-img-large { order: 0; }
    .business-img-large { min-height: 230px; max-height: 300px; }
    .business-content, .advantage-card, .culture-card, .charity-card, .mv-card { padding: 26px 22px; }
    .partners-logos { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .partner-swiper .swiper-wrapper { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .partner-card { min-height: 160px; }
    .partner-card img { width: 90px; height: 55px; }
    .cert-card img { height: 220px; }
    .timeline { padding-left: 25px; }
    .timeline-item { padding-left: 22px; }
    .timeline-dot { left: -25px; }
    .timeline-content { padding: 22px 20px; }
}

@media (max-width: 430px) {
    .logo-text img { width: 155px; height: auto; }
    .stats-grid { grid-template-columns: 1fr; }
    .partner-swiper .swiper-wrapper { grid-template-columns: 1fr 1fr; }
    .partner-card { padding-inline: 8px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition-duration: .01ms !important; }
}