/* =========================================================
   Font
   ========================================================= */
@import url('https://db.onlinewebfonts.com/c/972f7552e487ad5d1f98d599f7f1e83c?family=Siemens+Sans');


/* =========================================================
   Base / Reset
   ========================================================= */
:root {
    --header-h: 70px;
    --rail: 1280px;
    --pad-x: 24px;
}

html {
    scroll-behavior: smooth;
}

* {
    box-sizing: border-box;
    font-family: "Siemens Sans", sans-serif;
}

html, body {
    width: 100%;
    overflow-x: hidden;
}

body {
    margin: 0;
    padding: 0;
    background: #020618;
    font-family: "Siemens Sans", sans-serif;
}

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

.row {
    margin-left: 0 !important;
    margin-right: 0 !important;
}

/* =========================================================
   Rail (1280 공통 정렬 단일 정의)
   ========================================================= */
.container-rail,
.intro-inner,
.track-inner,
.location-inner,
.cta-inner,
.ceo-quote-inner,
.sim-feature-container,
.info-inner,
.keynote-inner,
.footer-links,
.feature-wrap,
.agenda-inner {
    max-width: var(--rail) !important;
    margin-left: auto !important;
    margin-right: auto !important;
    padding-left: var(--pad-x) !important;
    padding-right: var(--pad-x) !important;
    width: 100% !important;
}

.container-rail {
    /*    outline: 1px solid red;*/
}

/* =========================================================
   Header (PC / Common)
   ========================================================= */
#siteHeader {
    background: transparent !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    transition: background .25s ease, box-shadow .25s ease, backdrop-filter .25s ease;
}

    /* 스크롤하면 바로 배경 */
    #siteHeader.is-scrolled {
        background: #000028 !important;
        backdrop-filter: blur(10px) !important;
        box-shadow: 0 10px 30px rgba(0,0,0,0.25) !important;
    }

    #siteHeader .navbar {
        padding-left: 0 !important;
        padding-right: 0 !important;
    }

    #siteHeader .navbar-brand {
        padding-left: 0 !important;
        margin-left: 0 !important;
    }

    #siteHeader .navbar-nav {
        margin-left: 0 !important;
        padding-left: 0 !important;
    }

    /* header container도 rail 안으로 */
    #siteHeader .container-fluid {
        max-width: var(--rail) !important;
        margin-left: auto !important;
        margin-right: auto !important;
        padding-left: 0 !important;
        padding-right: 0 !important;
        /* outline: 1px solid lime; */
    }

/* PC nav layout */
.nav-desktop {
    width: 100%;
    margin: 0;
    padding: 15px 0;
    display: flex !important;
    align-items: center;
    gap: 28px;
    padding-left: 0 !important;
    padding-right: 0 !important;
}

    .nav-desktop > li {
        float: none !important;
    }

.nav-logo-link {
    padding: 0 !important;
    display: inline-flex !important;
    align-items: center;
}

.nav-logo-img {
    height: 28px;
    width: auto;
    display: block;
}

.nav-item .nav-link {
    color: #ffffff !important;
    font-weight: 600;
    font-size: 1.75rem;
    padding: 0 !important;
    opacity: 0.9;
}

    .nav-item .nav-link:hover,
    .nav-item .nav-link:active,
    .nav-item .nav-link:focus {
        color: #00ffb9 !important;
        text-decoration: none;
    }

    .nav-item .nav-link:hover {
        opacity: 1;
        text-decoration: none;
    }

.nav-cta {
    margin-left: auto;
}

.nav-btn {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    padding: 14px 26px !important;
    background: linear-gradient(95deg, #00D5A3 0%, #00C1D6 100%);
    color: black !important;
    font-weight: 700 !important;
    font-size: 16px;
    text-decoration: none !important;
    box-shadow: 0 10px 25px rgba(0,0,0,0.18);
    transition: background-color 0.3s ease, filter 0.3s ease;
    filter: brightness(1.05);
}

.navbar-nav > li > a.nav-btn:hover {
    background: linear-gradient(95deg, #00C1D6 0%, #00D5A3 100%);
    color: black !important;
    filter: brightness(1.05);
}

/* 햄버거 버튼 z-index (헤더 위에서 클릭되게) */
#menuToggle {
    position: relative;
    z-index: 60001 !important;
}


/* =========================================================
   Home / Banner
   ========================================================= */
.home-section {
    background-color: #020618;
    min-height: 100%;
    padding-top: var(--header-h);
    margin-top: calc(var(--header-h) * -1);
}

.video-container {
    position: relative;
    width: 100%;
    aspect-ratio: 21 / 9;
    max-height: 480px;
    overflow: hidden;
    padding-top: 0 !important;
}

.hero-banner {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-rail {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: flex-start;
}

.hero-content {
    position: relative;
    left: auto;
    top: auto;
    margin-top: 120px;
    max-width: 640px;
    z-index: 3;
    color: #fff;
}

.hero-title {
    margin: 0 0 14px 0;
    font-weight: 600;
    font-size: 5rem;
    line-height: 1.05;
    letter-spacing: -0.5px;
}

.hero-sub {
    margin: 0 0 18px 0;
    font-size: 3rem;
    font-weight: 600;
    color: #069999;
}

.hero-pill {
    display: inline-flex;
    align-items: center;
    padding: 0px;
    /*    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.25);*/
/*    backdrop-filter: blur(6px);
*/    font-size: 1.75rem;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-actions {
    display: flex;
    gap: 14px;
    align-items: center;
}

.hero-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 80px;
    text-decoration: none !important;
    font-weight: 500;
    font-size: 18px;
    border: 2px solid transparent;
    opacity: 0;
    transform: translateY(30px);
    animation: heroBtnUp 1.1s cubic-bezier(.22,1,.36,1) forwards;
    animation-delay: 0.4s;
}

    .hero-btn:hover {
        text-decoration: none;
    }

    .hero-btn.primary {
        background: linear-gradient(95deg, #00D5A3 0%, #00C1D6 100%);
        color: black !important;
        box-shadow: none;
        filter: brightness(1.05);
    }

        .hero-btn.primary:hover {
            background: linear-gradient(95deg, #00C1D6 0%, #00D5A3 100%);
            color: black;
            filter: brightness(1.05);
        }

    .hero-btn.outline {
        background-color: transparent;
        color: #00C1B6 !important;
        border: 1px solid #00C1B6;
        box-shadow: none;
        outline: none;
        transition: background-color 0.2s ease;
        animation-delay: 0.55s;
    }

        .hero-btn.outline:hover {
            background-color: #053033;
            border: 1px solid #00C1B6;
            filter: brightness(1.25);
        }

    /* 버튼 내부 화살표 */
    .hero-btn .arrow {
        font-size: 18px;
        line-height: 1;
    }

@keyframes heroBtnUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


/* =========================================================
   Reveal Animation
   ========================================================= */
.reveal {
    opacity: 0;
    transform: translateY(40px) scale(0.98);
    filter: blur(4px);
    transition: opacity 1.2s cubic-bezier(0.22, 1, 0.36, 1), transform 1.2s cubic-bezier(0.22, 1, 0.36, 1), filter 1.2s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: opacity, transform, filter;
}

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

@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
        filter: none;
    }
}

/* =========================================================
  Call for Speaker
   ========================================================= */
.speaker-strip {
    width: 100%;
    background: #EBEBEE;
    border: 1px solid #333353;
    padding: 12px 0;
    /*    border: 1px solid #4CC8C3;
*/
}

.speaker-strip-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.speaker-strip-text {
    color: #333353;
    font-size: 2.75rem;
    font-weight: 700;
}

.speaker-strip-sub {
    font-size: 1.25rem;
    font-weight: 500;
}

.speaker-strip-btn {
    background: #EBEBEE;
    color: black;
    padding: 12px 28px;
    font-size: 1.75rem;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid #333353;
}

    .speaker-strip-btn:hover {
        background: #00e6e6;
    }

/* 처음 상태 */
.speaker-strip-text,
.speaker-strip-btn {
    opacity: 0;
    transform: translateY(-30px);
    animation: slideDownFade 0.8s ease forwards;
}

/* 버튼은 살짝 딜레이 */
.speaker-strip-btn {
    animation-delay: 0.2s;
}

@keyframes slideDownFade {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
/* =========================================================
   Countdown
   ========================================================= */
.countdown-section {
    padding: 100px 20px;
    text-align: center;
    background: #020618;
    color: #fff;
}

.countdown-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 50px;
}

.countdown-wrap {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.time-box {
    width: 120px;
    height: 135px;
    background: #0A1024;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 2px solid rgba(0, 255, 255, 0.4);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.3), inset 0 0 15px rgba(0, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.num {
    font-size: 40px;
    font-weight: 700;
    color: #00eaff;
}

.label {
    margin-top: 10px;
    font-size: 10px !important;
    letter-spacing: 1px;
    color: #bfefff;
}


/* =========================================================
   Intro
   ========================================================= */
.ceo-quote {
    background: #000028;
    padding: 80px 0;
}

.ceo-quote-inner {
    max-width: 900px;
}

.ceo-quote-icon {
    width: 28px;
    margin-bottom: 20px;
}

.ceo-quote-text {
    color: #fff;
    font-size: 2.25rem;
    line-height: 1.8;
    margin-bottom: 18px;
}

.ceo-quote-author {
    color: #9aa3b2;
    font-size: 1.75rem;
}

.ceo-quote-icon {
    font-size: 100px;
    line-height: 0.6;
    margin-bottom: -30px;
    color: #00E6DC;
}

.intro-section {
    width: 100%;
    background: #000028;
    padding: 100px 20px;
    text-align: center;
}

/* ⚠️ intro-inner max-width:1100px는 rail과 충돌이라 제거 (rail 공통 정의가 담당) */
/* .intro-inner { max-width: 1100px; margin: 0 auto; } */

.intro-title {
    text-align: center;
    font-size: 52px;
    font-weight: 700;
    color: white;
    margin-bottom: 16px;
    position: relative;
}

.intro-label {
    display: flex; /* inline-flex → flex */
    width: fit-content;
    gap: 10px;
    padding: 0px;
    margin-bottom: 20px;
    font-size: 3rem;
    font-weight: 600;
    color: white;
}

.intro-desc {
    font-size: 18px;
    color: #ccc;
    padding-bottom: 10px;
}

.intro-content {
    font-size: 21px;
    line-height: 1.9;
    color: white;
    text-align: left;
}

    .intro-content h3 {
        color: white;
    }

    .intro-content p {
        margin-bottom: 28px;
    }
/* =========================================================
   SIM-Feature 
   ========================================================= */
.sim-feature {
    background: #000028;
    padding-top:100px;
    padding-bottom:50px;
}

.sim-feature-container {
    margin: auto;
    display: flex;
    justify-content: space-between;
    gap: 60px;
}

.sim-feature-item {
    flex: 1;
    color: white;
}

.sim-feature-head {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
}

.sim-feature-icon {
    width: 40px;
    display: block;
}

.sim-feature-item h3 {
    font-size: 2.75rem;
    font-weight: 600;
    color: #00e5c2;
    line-height: 1.2;
    margin: 0;
    margin-top: 2px;
}

.sim-feature-line {
    width: 100%;
    height: 2px;
    background: #00e5c2;
    margin-bottom: 20px;
}

.sim-feature-item p {
    font-size: 1.75rem;
    line-height: 1.7;
    color: #CAD5E2;
}

.feature-1 h3 {
    color: #00FFB9;
}

.feature-1 .sim-feature-line {
    background: #00FFB9;
}

/* Intelligent */
.feature-2 h3 {
    color: #00D7A0;
}

.feature-2 .sim-feature-line {
    background: #00D7A0;
}

/* Integrated */
.feature-3 h3 {
    color: #00E6DC;
}

.feature-3 .sim-feature-line {
    background: #00E6DC;
}

/* =========================================================
   Feature 
   ========================================================= */
.feature-section {
    background: #000028;
    padding: 0px 24px 150px;
}

/* ⚠️ feature-wrap max-width:1500px는 rail과 충돌이라 제거 (rail 공통 정의가 담당) */
/* .feature-wrap { max-width: 1500px; } */

.feature-wrap {
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
}

/* 카드 공통 */
.feature-card {
    position: relative;
    padding: 40px 32px;
    min-height: 260px;
    background-color: white;
    color: black;
    transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
    overflow: hidden;
}

/* 헤더(아이콘 + 타이틀) */
.feature-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
}

.icon-box {
    width: 70px;
    height: 70px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #fff;
    box-shadow: none;
}

.feature-title {
    position: relative;
    z-index: 1;
}

    .feature-title h3 {
        font-size: 2.75rem;
        margin: 0;
        font-weight: bold;
        color: black;
        line-height: 1.2;
    }

.feature-sub {
    display: inline-block;
    margin-top: 6px;
    font-size: 20px;
    color: var(--feature-color);
    opacity: 1;
}

/* 본문 */
.feature-card p {
    position: relative;
    z-index: 1;
    margin: 0;
    color: black;
    font-size: 1.75rem;
    line-height: 1.8;
}


/* =========================================================
   Keynote
   ========================================================= */
.keynote-section .container,
.keynote-section .container-lg,
.keynote-section .container-md {
    max-width: var(--rail) !important;
    width: 100% !important;
    padding-left: var(--pad-x) !important;
    padding-right: var(--pad-x) !important;
    margin: 0 auto !important;
}

.keynote-section {
    padding: 120px 20px;
    background: #020618;
    text-align: center;
}

@keyframes keynoteGlowSoft {
    0% {
        box-shadow: 0 0 4px rgba(255, 179, 71, 0.25), 0 0 10px rgba(255, 140, 0, 0.15);
        text-shadow: 0 0 3px rgba(255, 200, 100, 0.25);
    }

    50% {
        box-shadow: 0 0 10px rgba(255, 179, 71, 0.45), 0 0 18px rgba(255, 140, 0, 0.25);
        text-shadow: 0 0 6px rgba(255, 200, 100, 0.4);
    }

    100% {
        box-shadow: 0 0 4px rgba(255, 179, 71, 0.25), 0 0 10px rgba(255, 140, 0, 0.15);
        text-shadow: 0 0 3px rgba(255, 200, 100, 0.25);
    }
}

.keynote-badge {
    display: inline-block;
    padding: 8px 15px;
    margin-bottom: 20px;
    font-size: 18px;
    font-weight: 600;
    color: #F9CD30;
    border: 1px solid #ffb347;
    border-radius: 999px;
    background-color: #351B13;
    animation: keynoteGlowSoft 4.5s ease-in-out infinite;
}

.keynote-header h2 {
    font-size: 60px;
    margin-bottom: 16px;
    color: #FFC357;
    font-weight: bold;
}

.keynote-header p {
    color: #CAD5E2;
    margin-bottom: 45px;
    font-size: 20px;
}

.keynote-grid {
    display: grid;
    gap: 22px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    width: 100% !important;
    max-width: none !important;
    margin: 0 !important;
}

/* speaker card */
.speaker-card {
    position: relative;
    border-radius: 26px;
    overflow: hidden;
    background: #0b1328;
    border: 1px solid rgba(255,255,255,0.10);
    box-shadow: 0 22px 70px rgba(0,0,0,0.55);
    transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
}

    .speaker-card::before {
        content: "";
        position: absolute;
        inset: -2px;
        background: radial-gradient(80% 60% at 50% 20%, rgba(255, 179, 71, 0.18), transparent 60%);
        opacity: 0.45;
        pointer-events: none;
        transition: opacity 0.45s ease;
    }

    .speaker-card:hover {
        transform: translateY(-8px);
        border-color: rgba(255,255,255,0.18);
        box-shadow: 0 28px 90px rgba(0,0,0,0.65);
    }

        .speaker-card:hover::before {
            opacity: 0.95;
        }

    .speaker-card img {
        width: 100%;
        height: 320px;
        object-fit: cover;
        display: block;
    }

    .speaker-card:hover img {
        transform: scale(1.06);
    }

.speaker-info {
    padding: 22px 20px 20px;
    background: linear-gradient(180deg, rgba(6,12,28,0.00) 0%, rgba(6,12,28,0.35) 25%, #070f22 100%);
    text-align: left;
}

    .speaker-info h3 {
        margin: 0 0 8px 0;
        font-size: 22px;
        font-weight: 800;
        color: #fff;
        letter-spacing: -0.2px;
    }

.speaker-title {
    display: block;
    font-size: 14px;
    font-weight: 800;
    color: #3FDFFD;
    margin-bottom: 4px;
}

.speaker-divider {
    height: 1px;
    background: rgba(255,255,255,0.10);
    margin: 14px 0;
}

.speaker-topic {
    margin: 0;
    font-size: 13px;
    line-height: 1.55;
    color: rgba(202,213,226,0.85);
}

    .speaker-topic.keynote-label {
        font-size: 13px;
        font-weight: 800;
        color: rgba(202,213,226,0.78);
        margin-top: 2px;
    }

.speaker-keynote {
    margin: 2px 0 0 0;
    font-size: 13px;
    font-weight: 800;
    color: #fff;
}


/* =========================================================
   Lunch / Break
   ========================================================= */
.break-section {
    padding: 60px 20px;
    background: #020618;
}

.break-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.break-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, rgba(70, 201, 221, 0.1) 0%, rgba(70, 201, 221, 0.8) 50%, rgba(70, 201, 221, 0.1) 100%);
}

.break-badge {
    display: inline-block;
    padding: 15px 30px;
    font-size: 20px;
    font-weight: 600;
    color: #00bcd4;
    border: 1px solid #00bcd4;
    border-radius: 999px;
    background: transparent;
    background-color: #020618;
    white-space: nowrap;
}


/* =========================================================
   Agenda Table
   ========================================================= */
.agenda-section {
    background: #000028;
    padding: 0px 20px 0;
    text-align: center;
}

/* agenda-inner는 rail 공통 정의가 담당 (중복 제거) */
/* .agenda-inner { max-width: var(--rail, 1280px); ... } */

.agenda-top {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 40px;
}

.agenda-chip {
    grid-column: 1;
    justify-self: start;
}

.agenda-pill {
    box-shadow: 0 0 0 2px rgba(83,234,253,0.18), 0 0 18px rgba(83,234,253,0.35), 0 0 42px rgba(0,188,212,0.18);
}

.agenda-title {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 500;
    letter-spacing: -0.4px;
    color: #00C1B6;
}

.agenda-subrow {
    display: flex;
    justify-content: flex-start;
    margin: 8px 0 18px;
}

.agenda-chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 18px;
    border: 0.7px solid #00E4E3;
    color: #00E4E3;
    background-color: #001034;
    font-weight: 600;
    font-size: 14px;
}

.agenda-table-wrap {
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.10);
    box-shadow: 0 24px 80px rgba(0,0,0,0.55);
}

.agenda-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    text-align: left;
    background: #0D152B;
}

    .agenda-table thead th {
        padding: 18px 24px;
        font-size: 1.25rem;
        font-weight: 900;
        color: #00C1B6;
        background: #0A3342;
    }

    .agenda-table tbody td {
        padding: 12px 24px;
        border-top: 1px solid rgba(255,255,255,0.06);
        color: rgba(226,232,240,0.92);
        vertical-align: top;
    }

    .agenda-table tbody tr {
        opacity: 0;
        transform: translateY(20px);
        animation: agendaFadeUp 0.6s ease forwards;
    }

/* 애니메이션 */
@keyframes agendaFadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.col-time {
    width: 200px;
}

.col-speaker {
    width: 360px;
}

.agenda-table .time {
    font-weight: 700;
    color: rgba(226,232,240,0.85);
    font-size: 1.75rem;
}

.agenda-table .session {
    font-weight: 700;
    color: #fff;
    font-size: 1.75rem;
}

.speaker-main {
    font-weight: 700;
    color: #fff;
    font-size: 1.75rem;
    margin-bottom: 6px;
}

.speaker-sub {
    font-size: 1.75rem;
    font-weight: 700;
    color: white;
}

.break-badge-inline {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 900;
}

.agenda-table tbody tr:hover td {
    background: #0C1C31;
}

@media (max-width: 900px) {
    .agenda-title {
        font-size: 40px;
    }

    .col-time {
        width: 140px;
    }

    .col-speaker {
        width: auto;
    }
    .sim-feature-container {
        flex-direction: column;
        gap: 50px;
    }

    .sim-feature-item {
        text-align: center;
    }

    .sim-feature-line {
        width: 80%;
        margin: 20px auto;
    }
}

@media (max-width: 680px) {
    .agenda-inner {
        padding-left: 16px !important;
        padding-right: 16px !important;
    }

    .agenda-title {
        font-size: 32px;
    }

    .agenda-table thead {
        display: none;
    }

    .agenda-table, .agenda-table tbody, .agenda-table tr, .agenda-table td {
        display: block;
        width: 100%;
    }

        .agenda-table tbody td {
            border-top: none;
            padding: 14px 16px;
        }

        .agenda-table tr {
            border-top: 1px solid rgba(255,255,255,0.08);
        }

        .agenda-table .time::before {
            content: "시간 ";
            opacity: .65;
            margin-right: 8px;
            font-weight: 800;
        }
}


/* =========================================================
   Track
   ========================================================= */
/* =========================================================
   Track (Accordion Card) - REPLACE ALL OLD TRACK CSS WITH THIS
   ========================================================= */
.track-section {
    background: #000028;
    padding: 40px 20px 80px;
}

.track-accordion {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

/* 카드 */
.track-card {
    border-radius: 18px;
    overflow: hidden;
    background: #0C182D;
    border: 1px solid rgba(255,255,255,0.08);
    transition: box-shadow 0.3s ease, background-color 0.3s ease, transform 0.25s ease;
}

    .track-card:hover {
        border-color: #003A53;
        box-shadow: 0 0 0 1px rgba(0,58,83,0.6), 0 0 32px rgba(0,58,83,0.55), 0 16px 50px rgba(0,0,0,0.6);
        transform: translateY(-2px);
        background-color: #0E1C36;
    }

.track-card-head {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 22px 24px;
    background: transparent;
    border: 0;
    cursor: pointer;
    text-align: left;
}

.track-card-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.2px;
}

.track-card-icon {
    width: 40px;
    height: 40px;
    position: relative;
    flex: 0 0 auto;
    background: #00CCCC;
    border-radius: 50%;
    color: black;
}

    .track-card-icon::before {
        content: "";
        position: absolute;
        left: 50%;
        top: 50%;
        width: 10px;
        height: 10px;
        border-right: 2px solid black;
        border-bottom: 2px solid black;
        transform: translate(-50%,-55%) rotate(45deg);
        transition: transform .25s ease;
    }

.track-card.is-open .track-card-icon::before {
    transform: translate(-50%,-45%) rotate(-135deg);
}

.track-card-body {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height .35s ease, opacity .25s ease, padding .25s ease;
    border-top: 1px solid rgba(255,255,255,0.2);
}

.track-card.is-open .track-card-body {
    padding: 0 24px 22px;
    opacity: 1;
}

.track-card-body p {
    margin-top: 10px;
    color: white;
    font-size: 1.75rem;
    line-height: 1.75;
}

.track-top {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 40px;
    margin-top: 0;
}

.track-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 18px;
    border: 0.7px solid rgb(0,255,185);
    color: rgb(0,255,185);
    background: #001A37;
    font-weight: 600;
    font-size: 14px;
}

.track-title {
    margin: 0;
    font-size: 2.25rem;
    font-weight: 500;
    letter-spacing: -0.4px;
    white-space: nowrap;
    color: #00C1B6;
}
/* 모바일 */
@media (max-width: 768px) {
    .track-card-head {
        padding: 18px 18px;
    }

    .track-card-body {
        padding: 0 18px;
    }

    .track-card.is-open .track-card-body {
        padding: 0 18px 18px;
    }
}
/* =========================================================
   Info
   ========================================================= */
.info-section {
    padding: 120px 20px;
    background: #000028;
}

/* ⚠️ info-inner max-width:1100px는 rail과 충돌이라 제거 (rail 공통 정의가 담당) */
/* .info-inner { max-width: 1100px; margin: 0 auto; } */

.info-title {
    text-align: center;
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 70px;
    position: relative;
}

    .info-title .title-line {
        display: block;
        width: 100px;
        height: 4px;
        margin: 18px auto 0;
        background: linear-gradient(90deg, #00B5DD, #2A81FF);
        border-radius: 4px;
    }

.info-card {
    background: #070B2A;
    border-radius: 20px;
    padding: 50px 60px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    text-align: left;
    border: 1px solid #3A3E4F;
}

.info-header {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-bottom: 30px;
}

.info-icon {
    width: 55px;
    height: 55px;
    border-radius: 16px;
    background: linear-gradient(135deg, #00B5DD, #2A81FF);
    display: flex;
    align-items: center;
    justify-content: center;
}

    .info-icon i {
        color: #fff;
        font-size: 27px;
    }

.info-header h3 {
    font-size: 24px;
    font-weight: 600;
    color: white;
}

.info-list {
    line-height: 2.3;
    color: #CAD5E2;
    font-size: 1.55rem;
}

.info-list2 {
    line-height: 2.3;
    color: #CAD5E2;
    font-size: 1.55rem;
}

.info-list {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 1.55rem;
}

    .info-list li {
        position: relative;
        padding-left: 22px;
        margin-bottom: 18px;
        color: #CAD5E2;
        line-height: 1.7;
    }

        .info-list li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 10px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #00B5DD;
        }


/* =========================================================
   Location
   ========================================================= */
.location-section {
    background: #000028;
    padding: 80px 20px;
}

.location-title {
    text-align: center;
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 50px;
    color: white;
    position: relative;
}

    .location-title .title-line {
        display: block;
        width: 90px;
        height: 4px;
        background: linear-gradient(90deg, #00B5DD, #2A81FF);
        margin: 18px auto 0;
        border-radius: 4px;
    }

.location-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: stretch;
}

.location-photo,
.location-card {
    width: 100%;
    height: 100%;
    min-width: 0;
}

.location-card {
    background: #070B2A;
    border-radius: 20px;
    padding: 36px 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    text-align: left;
    border: 1px solid #3a3e4f;
}

.location-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.location-icon {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    background: linear-gradient(135deg, #00B5DD, #2A81FF);
    display: flex;
    align-items: center;
    justify-content: center;
}

    .location-icon i {
        color: #fff;
        font-size: 18px;
    }

.location-header h3 {
    font-size: 2.25rem;
    font-weight: 700;
    margin: 0;
    color: white;
}

.location-header h4 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0;
    color: white;
}

.location-block p {
    font-size: 1.55rem;
    color: #CAD5E2; /* 원하는 색 */
    margin: 3px 0 0 0;
}

.location-block sub {
    font-size: 1.25rem;
}

.loc-reveal .loc-in-left,
.loc-reveal .loc-in-right {
    opacity: 0;
    filter: blur(6px);
    transition: transform 900ms cubic-bezier(0.22, 1, 0.36, 1), opacity 900ms cubic-bezier(0.22, 1, 0.36, 1), filter 900ms cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform, opacity, filter;
}

.loc-reveal .loc-in-left {
    transform: translateX(-70px) scale(0.985);
}

.loc-reveal .loc-in-right {
    transform: translateX(70px) scale(0.985);
}

.loc-reveal.show .loc-in-left,
.loc-reveal.show .loc-in-right {
    opacity: 1;
    filter: blur(0);
    transform: translateX(0) scale(1);
}

#Location .location-wrap.show {
    display: grid !important;
}

@media (max-width: 768px) {
    .loc-reveal .loc-in-left,
    .loc-reveal .loc-in-right {
        transform: translateY(22px) scale(0.99);
    }
}

.location-content {
    font-size: 1rem;
    color: #A5B0BD;
    line-height: 1.6;
}

.location-block {
    margin-bottom: 20px;
    color: white;
}

    .location-block h4 {
        font-size: 20px;
        font-weight: 600;
        margin-bottom: 8px;
    }

    .location-block ul {
        list-style: none;
        padding-left: 0;
        margin: 0;
    }

        .location-block ul li {
            position: relative;
            padding-left: 14px;
            margin-bottom: 6px;
        }

            .location-block ul li::before {
                content: "";
                position: absolute;
                left: 0;
                top: 8px;
                width: 5px;
                height: 5px;
                border-radius: 50%;
                background: #00B5DD;
            }

.location-divider {
    height: 1px;
    background: lightgray;
    margin: 20px 0;
}

.location-block .sub {
    font-size: 14px;
    color: #3a3e4f;
    margin-top: 5px;
}

.location-photo {
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.10);
    box-shadow: 0 24px 80px rgba(0,0,0,0.55);
    background: #0F172A;
    max-width: none;
    min-height: 0;
    aspect-ratio: 4 / 3;
}

    .location-photo img {
        width: 100%;
        height: 100%;
        display: block;
        object-fit: cover;
    }

.location-cta {
    margin-top: 36px;
    display: flex;
    justify-content: center;
}

.location-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 44px;
    background-color: #009999;
    color: #fff !important;
    text-decoration: none !important;
    font-weight: 500;
    font-size: 1.75rem;
    border: 1px solid rgba(255,255,255,0.10);
    box-shadow: 0 18px 40px rgba(0,0,0,0.35);
    transition: background 0.25s ease;
    width: 100%;
}

    .location-btn:hover {
        background: #00C1B6;
    }

@media (max-width: 768px) {
    .location-wrap {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .location-photo {
        min-height: 240px;
    }

    .location-cta {
        margin-top: 24px;
    }

    .location-btn {
        width: 100%;
        max-width: 360px;
        border-radius: 999px;
    }
}
/* =========================================================
   Sponsor
   ========================================================= */
.sponsor-section {
    padding: 120px 40px;
    background: #000028;
    text-align: center;
}

.sponsor-badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 999px;
    background: rgba(47,195,221,0.15);
    color: #2FC3DD;
    font-size: 14px;
    margin-bottom: 20px;
}

.sponsor-section h2 {
    font-size: 48px;
    color: white;
    margin-bottom: 12px;
}

.sponsor-section p {
    color: #94A3B8;
    margin-bottom: 60px;
}

.sponsor-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
}

.sponsor-card {
    background: white;
    border: 1px solid rgba(47,195,221,0.3);
    border-radius: 16px;
    padding: 20px;
    min-height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

    .sponsor-card img {
        max-width: 160px;
        max-height: 60px;
        object-fit: contain;
        transition: 0.3s ease;
    }

    .sponsor-card:hover {
        transform: translateY(-6px);
        border-color: #2FC3DD;
        box-shadow: 0 0 20px rgba(47,195,221,0.35);
    }

        .sponsor-card:hover img {
            filter: none;
        }

/* =========================================================
   Sponsor: Soft stagger reveal (NO flicker)
   ========================================================= */
.sponsor-grid.sponsor-stagger .sponsor-card {
    position: relative;
    overflow: hidden; /* 마스크용 */
    opacity: 0;
    transform: translate3d(0, 18px, 0);
    will-change: transform, opacity;
}

    /* 카드가 위로 “쓸리듯” 드러나는 그라데이션 마스크 */
    .sponsor-grid.sponsor-stagger .sponsor-card::before {
        content: "";
        position: absolute;
        inset: 0;
        pointer-events: none;
        /* 밝은 카드 위에서 자연스럽게 “가리는” 느낌 */
        background: linear-gradient( 90deg, rgba(255,255,255,0.00) 0%, rgba(255,255,255,0.55) 35%, rgba(255,255,255,0.00) 70% );
        /* 처음에는 카드 왼쪽 밖에 있다가 */
        transform: translate3d(-140%, 0, 0);
        opacity: 0; /* 기본은 숨김 */
    }

/* inview */
.sponsor-grid.sponsor-stagger.is-inview .sponsor-card {
    opacity: 1;
    transform: translate3d(0, 0, 0);
    transition: opacity 700ms cubic-bezier(0.22, 1, 0.36, 1), transform 700ms cubic-bezier(0.22, 1, 0.36, 1);
    transition-delay: calc(var(--i) * 120ms);
}

    /* “사라락” 핵심: 카드 자체는 조용히 올라오고,
   위에 얇은 하이라이트가 한번 쓸고 지나가며 부드럽게 등장 */
    .sponsor-grid.sponsor-stagger.is-inview .sponsor-card::before {
        opacity: .35;
        transform: translate3d(140%, 0, 0);
        transition: transform 900ms cubic-bezier(0.22, 1, 0.36, 1), opacity 900ms cubic-bezier(0.22, 1, 0.36, 1);
        transition-delay: calc(var(--i) * 120ms + 60ms);
    }

/* 마지막에 “한번 삭” 정렬(전체가 아주 살짝) */
@keyframes sponsorSettle {
    0% {
        transform: translateY(0);
    }

    55% {
        transform: translateY(-5px);
    }

    100% {
        transform: translateY(0);
    }
}

.sponsor-grid.sponsor-stagger.is-settled {
    animation: sponsorSettle 520ms cubic-bezier(0.22, 1, 0.36, 1) 1;
}

@media (prefers-reduced-motion: reduce) {
    .sponsor-grid.sponsor-stagger .sponsor-card {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }

        .sponsor-grid.sponsor-stagger .sponsor-card::before {
            display: none !important;
        }

    .sponsor-grid.sponsor-stagger.is-settled {
        animation: none !important;
    }
}
/* =========================================================
   CTA
   ========================================================= */
.cta-section {
    padding: 120px 20px;
    background: #020618;
    color: #fff;
    text-align: center;
}

/* ⚠️ cta-inner max-width:1600px는 rail과 충돌이라 제거 (rail 공통 정의가 담당) */
/* .cta-inner { max-width: 1600px; margin: 0 auto; } */

.cta-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 10px;
}

.cta-subtitle {
    color: #2FC3DD;
    margin-bottom: 60px;
    font-size: 22px;
}

.cta-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

    .cta-grid.cta-grid-2 {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        max-width: 900px;
        margin: 0 auto;
    }

    .cta-grid:has(.cta-card:nth-child(2)):not(:has(.cta-card:nth-child(3))) {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

.cta-card {
    background: #080E22;
    padding: 40px 30px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    transition: 0.3s;
    border: 1px solid #3a3e4f;
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: none !important;
    width: 100%;
}

    .cta-card:hover {
        transform: translateY(-6px);
    }

.cta-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #fff;
    box-shadow: 0 12px 28px rgba(0,0,0,0.35);
}

    .cta-icon.blue {
        background: linear-gradient(135deg, #00B5DD, #2A81FF);
    }

    .cta-icon.indigo {
        background: linear-gradient(135deg, #6366f1, #4f46e5);
    }

    .cta-icon.purple {
        background: linear-gradient(135deg, #a855f7, #7c3aed);
    }

    .cta-icon.pink {
        background: linear-gradient(135deg, #ec4899, #db2777);
    }

    .cta-icon.red {
        background: linear-gradient(135deg, #ff4d6d, #ff006e);
    }

.cta-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: white;
}

.cta-card p {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 25px;
    color: #CAD5E2;
}

.cta-btn {
    background: #0C374E;
    border: 1px solid #53EAFD;
    padding: 10px 24px;
    border-radius: 30px;
    color: #53EAFD;
    cursor: pointer;
    transition: 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    margin-top: auto;
    position: relative;
    z-index: 5;
}

    .cta-btn:hover {
        background: rgba(cyan-500, 0.3);
        color: #53EAFD;
        text-decoration: none;
    }


/* =========================
   CTA Modal (CLEAN)
   ========================= */

/* overlay */
.cta-modal {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 99999;
}

    .cta-modal.active {
        display: flex;
    }

.cta-modal-dim {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.62);
    backdrop-filter: blur(10px);
}

/* box */
.cta-modal-box {
    position: relative;
    width: 450px;
    max-width: calc(100% - 48px);
    padding: 34px 44px 34px;
    border-radius: 28px;
    background: radial-gradient(120% 120% at 20% 10%, rgba(63,223,253,0.20), rgba(12,22,44,0.93) 55%, #0c162c 100%);
    border: 1px solid rgba(255,255,255,0.10);
    box-shadow: 0 28px 90px rgba(0,0,0,0.70);
    overflow: hidden;
    text-align: left;
}

    /* subtle top glow */
    .cta-modal-box::after {
        content: "";
        position: absolute;
        inset: -2px;
        background: radial-gradient(70% 55% at 22% 16%, rgba(63,223,253,0.22), transparent 60%);
        opacity: 0.7;
        pointer-events: none;
    }

/* close button */
.cta-close {
    position: absolute;
    top: 18px;
    right: 18px;
    width: 44px;
    height: 44px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.14);
    background: rgba(255,255,255,0.04);
    color: rgba(255,255,255,0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 3;
    transition: .2s ease;
}

    .cta-close:hover {
        background: rgba(255,255,255,0.08);
        color: #fff;
        transform: scale(1.03);
    }

/* Top icon */
.cta-modal-icon {
    width: 76px;
    height: 76px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #00B5DD, #2A81FF);
    box-shadow: 0 18px 38px rgba(0,0,0,0.35);
    margin: 6px 0 14px;
    position: relative;
    z-index: 2;
}

    .cta-modal-icon i {
        font-size: 30px;
        color: #fff;
    }

/* title / desc */
#modalTitle {
    font-size: 30px;
    font-weight: 600;
    color: #fff;
    margin: 0 0 10px;
    letter-spacing: -0.6px;
    position: relative;
    z-index: 2;
}

#modalDesc {
    margin: 0 0 18px;
    color: rgba(202,213,226,0.92);
    font-size: 14px;
    line-height: 1.7;
    position: relative;
    z-index: 2;
}

/* email panel */
.cta-panel {
    margin-top: 16px;
    border-radius: 18px;
    padding: 18px 18px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(63,223,253,0.20);
    display: flex;
    align-items: center;
    gap: 14px;
    position: relative;
    z-index: 2;
}

/* panel icon box */
.cta-panel-icon {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(63,223,253,0.10);
    border: 1px solid rgba(63,223,253,0.22);
}

    .cta-panel-icon i {
        color: #3FDFFD;
        font-size: 18px;
    }

/* label/value */
.cta-panel-text {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
}

#modalLabel {
    font-size: 12px;
    color: #3FDFFD;
    font-weight: 800;
}

#modalValue {
    font-size: 16px;
    color: #fff;
    font-weight: 700;
    word-break: break-all;
}

/* note */
#modalNote {
    margin-top: 14px;
    border-radius: 14px;
    padding: 14px 16px 14px 34px;
    background: rgba(63,223,253,0.07);
    border: 1px solid rgba(63,223,253,0.14);
    color: rgba(202,213,226,0.92);
    font-size: 12px;
    line-height: 1.65;
    position: relative;
    z-index: 2;
}

    #modalNote::before {
        content: "•";
        position: absolute;
        left: 16px;
        top: 14px;
        color: #3FDFFD;
    }

/* action button */
.cta-modal-action {
    margin-top: 18px;
    width: 100%;
    height: 62px;
    border-radius: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 16px;
    text-decoration: none;
    color: #fff;
    background: linear-gradient(90deg, #00B5DD, #2A81FF);
    box-shadow: 0 18px 40px rgba(0,0,0,0.45);
    border: 1px solid rgba(255,255,255,0.10);
    position: relative;
    z-index: 2;
    transition: .22s ease;
}

    .cta-modal-action:hover {
        transform: translateY(-2px);
        filter: brightness(1.05);
    }

/* responsive */
@media (max-width: 520px) {
    .cta-modal-box {
        padding: 28px 22px 22px;
        border-radius: 22px;
    }

    .cta-modal-icon {
        width: 64px;
        height: 64px;
        border-radius: 18px;
        margin: 4px 0 12px;
    }

        .cta-modal-icon i {
            font-size: 26px;
        }

    #modalTitle {
        font-size: 32px;
    }
}


/* =========================================================
   Footer
   ========================================================= */
.site-footer {
    background: #000028;
    padding: 20px 0;
    min-height: 80px;
    color: #90A1B9;
    border-top: 1px solid #3A3E4F;
}


.footer-rail {
    max-width: var(--rail);
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--pad-x);
}

.footer-links {
    display: flex;
    justify-content: flex-start;
    gap: 28px;
    flex-wrap: wrap;
}

    .footer-links a {
        color: #c9c9c9;
        font-size: 1.75rem;
        text-decoration: none;
        transition: color 0.2s ease;
    }

        .footer-links a:hover {
            color: rgb(0, 255, 185);
            text-decoration: none;
        }


/* =========================================================
   Hover / Focus reset (Bootstrap nav)
   ========================================================= */
.navbar-nav > li > a:hover,
.navbar-nav > li > a:focus,
.navbar-nav > li > a:active {
    background-color: transparent !important;
    color: #fff !important;
    text-decoration: none !important;
}

#mobileMenu a:hover,
#mobileMenu a:focus,
#mobileMenu a:active {
    background-color: transparent !important;
    color: #fff !important;
}


/* =========================================================
   Mobile Menu
   ========================================================= */
#mobileMenu {
    display: block !important;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity .18s ease, visibility .18s ease;
    position: fixed;
    inset: 0;
    z-index: 50000 !important;
}

    #mobileMenu.open {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }

    #mobileMenu .menu-dim {
        position: absolute;
        inset: 0;
        background: rgba(0,0,0,0.45);
        opacity: 0;
        transition: opacity .18s ease;
    }

    #mobileMenu.open .menu-dim {
        opacity: 1;
    }

    #mobileMenu .menu-panel {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 100%;
        width: 100vw !important;
        background: #000028;
        padding-top: 90px;
        transform: translateX(100%);
        transition: transform .22s ease;
        will-change: transform;
        display: flex;
        flex-direction: column;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        border-left: 0 !important;
    }

    #mobileMenu.open .menu-panel {
        transform: translateX(0);
    }

    /* mobile menu links (원본 그대로 유지) */
    #mobileMenu .menu-panel ul {
        padding: 0 24px;
        margin: 0;
        list-style: none;
    }

        #mobileMenu .menu-panel ul li a {
            display: block;
            padding: 14px 0;
            color: #fff;
            text-decoration: none;
        }

            #mobileMenu .menu-panel ul li a.menu-btn {
                margin-top: 12px;
                padding: 12px 0;
                background: linear-gradient(95deg, #00D5A3 0%, #00C1D6 100%);
                color: black;
                text-align: center;
                font-weight: 700;
                transition: all 0.3s ease;
            }

                #mobileMenu .menu-panel ul li a.menu-btn:hover {
                    opacity: 0.85;
                    background: linear-gradient(95deg, #00C1D6 0%, #00D5A3 100%);
                }

/* close btn */
#menuClose {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 28px;
    color: #fff;
    cursor: pointer;
    padding: 8px 12px;
    user-select: none;
}

/* list (원본 있던 스타일 유지) */
#mobileMenu ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

#mobileMenu li {
    margin: 0;
}

#mobileMenu a {
    display: block;
    padding: 16px 24px;
    color: #fff;
    text-decoration: none;
    font-size: 18px;
    font-weight: 600;
}

    #mobileMenu a:hover {
        background: rgba(255,255,255,0.08);
    }


/* =========================================================
   Responsive (rail 고정)
   ========================================================= */
/* ⚠️ 기존 min-width 1280/1600에서 1320/1480로 커지는 충돌 제거: rail 고정 */
@media (min-width: 1280px) {
    .intro-inner,
    .info-inner,
    .location-inner,
    .cta-inner,
    .feature-wrap,
    .track-inner,
    .agenda-inner,
    .keynote-inner,
    .container-rail {
        max-width: var(--rail) !important;
    }
}

@media (min-width: 1600px) {
    .intro-inner,
    .info-inner,
    .location-inner,
    .cta-inner,
    .feature-wrap,
    .track-inner,
    .agenda-inner,
    .keynote-inner,
    .container-rail {
        max-width: var(--rail) !important;
    }
}

@media (max-width: 1200px) {
    .track-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .track-header h2 {
        font-size: 42px;
    }

    .track-header p {
        font-size: 18px;
    }
}

@media (max-width: 1100px) {
    .keynote-grid {
        grid-template-columns: repeat(2, minmax(0,1fr));
    }
}

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

    .feature-wrap {
        grid-template-columns: repeat(2, minmax(0,1fr));
    }
}

@media (max-width: 991px) {
    .hero-content {
        left: 32px;
        max-width: 520px;
    }

    .hero-title {
        font-size: 38px;
    }
}

@media (max-width: 768px) {

    #siteHeader .logo img,
    #siteHeader .brand img,
    #siteHeader .navbar-brand img {
        width: 140px;
        max-width: 140px;
        height: auto;
    }

    #siteHeader .nav-desktop {
        display: none !important;
        padding-left: 0 !important;
        padding-right: 0 !important;
        margin-left: 0 !important;
    }


    #siteHeader .navbar-brand {
        padding-left: 16px !important;
    }


    #menuToggle {
        display: block !important;
    }

    .hero-content {
        left: 0px;
        right: 18px;
        top: 45px;
        max-width: none;
        margin-top: 24px !important
    }

    .video-container {
        overflow: visible;
    }

    .hero-banner {
        height: 220%; /* 세로 더 크게 */
    }

    .hero-title {
        font-size: 3rem;
        line-height: 1.12;
    }

    .hero-sub {
        font-size: 1.25rem;
    }

    .hero-pill {
        font-size: 1rem;
        width: 100%;
        max-width: 360px;
        min-height: 28px;
        display: flex;
        align-items: center;
        margin-bottom: 15px;
/*        justify-content: center;
*/        /*        display: none;
*/
    }

    .hero-btn {
        font-size: 15px;
        padding: 8px 24px;
        min-height: 38px !important;
    }

    .speaker-strip-inner {
        flex-direction: column;
        justify-content: center;
        text-align: center;
        gap: 16px;
    }

    .speaker-strip-text {
        line-height: 1.3;
        text-align: left;
    }

    .speaker-strip-sub {
        display: block;
        text-align:left;
        margin-top: 6px;
    }

    .speaker-strip-btn {
        padding: 12px 24px;
    }

    /* Intro */
    .intro-section {
        padding: 70px 0px;
    }

    .intro-title {
        margin-bottom: 28px;
    }

    .intro-content {
        line-height: 1.7;
    }

    .intro-label {
        padding: 0px;
        margin-bottom : 0px;
    }

 /*   simfeature*/
    .sim-feature-item p{
        text-align:left;
    }

    .sim-feature-line {
        width: 100%;
        margin: 20px auto;
    }

    /* keynote */
    .keynote-grid {
        grid-template-columns: 1fr;
        max-width: 100%;
        gap: 18px;
        padding: 0;
    }

    .speaker-card img {
        height: 260px;
    }

    .speaker-info {
        padding: 24px;
    }

    .keynote-header p {
        margin-bottom: 32px;
    }

    /* Feature */
    .feature-section {
        padding: 0px 0px 30px;
    }

    .feature-wrap {
        grid-template-columns: 1fr;
    }

    .feature-card {
        padding: 20px 18px;
        min-height: 200px;
    }

    .icon-box {
        width: 60px;
        height: 60px;
    }

    .feature-card p {
        line-height: 1.7;
        font-weight: 600;
    }

    /* Track */
    .track-section {
        padding: 0px;
    }

    .track-top {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        gap: 14px;
        margin-bottom: 30px;
        padding-top: 30px;
    }

    .track-title {
        grid-column: 1;
    }

    .track-card-body p {
        line-height: 1.7;
    }

    .track-item {
        padding: 20px;
        gap: 14px;
    }

    .track-icon {
        width: 56px;
        height: 56px;
        border-radius: 14px;
    }

    /* ---------- Agenda ---------- */
    .agenda-top {
        flex-direction: column;
        align-items: flex-start; /* 왼쪽 정렬 유지 */
    }

    /* Info */
    .info-section {
        padding: 50px 25px;
    }

    .info-title {
        margin-bottom: 36px;
    }

    .info-card {
        padding: 28px 22px;
    }

    /* Location */
    .location-section {
        padding: 70px 16px;
    }

    .location-wrap {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .location-title {
        margin-bottom: 34px;
    }


    /* CTA */
    .cta-section {
        padding: 85px 16px;
    }

    .cta-title {
    }

    .cta-subtitle {
        margin-bottom: 28px;
    }

    .cta-grid {
        grid-template-columns: 1fr;
    }

    .cta-card {
        padding: 28px 22px;
    }

    /* Footer */
    .site-footer {
        padding: 24px 16px;
    }

    /* Sponsor */
    .sponsor-section {
        padding: 80px 16px;
    }

    .sponsor-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 14px;
    }

    .sponsor-grid {
        margin-left: 12px;
        margin-right: 12px;
    }
}

@media (max-width: 500px) {
    .track-grid {
        grid-template-columns: 1fr;
    }

    .track-badge {
        padding: 6px 14px;
    }

    .track-header {
        margin-bottom: 50px;
    }

        .track-header h2 {
            font-size: 28px;
        }

    .track-card {
        padding: 20px;
    }

    /* Countdown 축소 */
    .time-box {
        width: 110px;
        height: 120px;
    }

    .num {
        font-size: 32px;
    }
}

@media (min-width: 491px) and (max-width: 784px) {

    .speaker-strip-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
    }

    .speaker-strip-text {
        font-size: 2rem;
        line-height: 1.3;
    }

    .speaker-strip-sub {
        font-size: 1rem;
    }

    .speaker-strip-btn {
        font-size: 1.2rem;
        padding: 10px 20px;
    }
}