/* ============================================================
   IBC Main Page Theme — "Deep Tech GIS × Editorial Trust"
   메인 페이지(index.html, en/index.html) 전용.
   main.css를 건드리지 않도록 모든 클래스는 ib- 접두사를 사용한다.
   ============================================================ */

:root {
    /* Dark ground (Deep Tech) */
    --ib-ink: #0A1017;
    --ib-ink-2: #101A26;
    --ib-ink-line: rgba(255, 255, 255, 0.09);
    --ib-ink-text: #E8F0F6;
    --ib-ink-muted: #94A7B8;

    /* Signal accents (Deep Tech) */
    --ib-cyan: #3FD8CE;
    --ib-blue: #5B8DEF;

    /* Warm paper ground (Editorial) */
    --ib-paper: #FAF8F3;
    --ib-surface: #FFFFFF;
    --ib-paper-line: #E7E1D4;
    --ib-text: #1C1913;
    --ib-muted: #6B6456;

    /* Editorial accents */
    --ib-teal: #0E7C74;      /* cyan과 같은 색상 계열의 저휘도 버전 */
    --ib-gold: #A98C57;

    /* Type */
    --ib-serif: 'Noto Serif KR', 'Iowan Old Style', Georgia, serif;
    --ib-sans: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Segoe UI', sans-serif;
    --ib-mono: ui-monospace, 'SF Mono', 'JetBrains Mono', Menlo, monospace;

    --ib-maxw: 1200px;
    --ib-header-h: 72px;
}

/* ---------- 공통 레이아웃 ---------- */
.ib-container {
    max-width: var(--ib-maxw);
    margin: 0 auto;
    padding: 0 24px;
}

.ib-eyebrow {
    font-family: var(--ib-mono);
    font-size: 0.78rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin: 0 0 1.1rem;
}

.ib-eyebrow--gold { color: var(--ib-gold); }
.ib-eyebrow--cyan { color: var(--ib-cyan); }

.ib-sec-title {
    font-family: var(--ib-serif);
    font-weight: 700;
    font-size: clamp(1.7rem, 3.6vw, 2.6rem);
    line-height: 1.25;
    letter-spacing: -0.01em;
    margin: 0 0 1rem;
    word-break: keep-all;
    text-wrap: balance;
}

.ib-sec-lead {
    font-size: clamp(0.95rem, 1.4vw, 1.05rem);
    line-height: 1.8;
    margin: 0;
    max-width: 62ch;
    word-break: keep-all;
}

/* ---------- 버튼 ---------- */
.ib-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 1.7rem;
    border-radius: 10px;
    font-family: var(--ib-sans);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition:
        transform 0.56s cubic-bezier(0.16, 1, 0.3, 1),
        box-shadow 0.56s ease,
        background 0.56s ease,
        border-color 0.56s ease,
        color 0.32s ease,
        opacity 0.56s ease;
    cursor: pointer;
    white-space: nowrap;
}

.ib-btn:hover { transform: translateY(-1px); }

/* 다크 섹션용 */
.ib-btn--signal {
    background: linear-gradient(92deg, var(--ib-cyan), var(--ib-blue));
    color: #06131A;
    box-shadow: 0 8px 24px rgba(63, 216, 206, 0.25);
}
.ib-btn--signal:hover { box-shadow: 0 12px 32px rgba(63, 216, 206, 0.35); }

.ib-btn--ghost {
    background: transparent;
    color: var(--ib-ink-text);
    border: 1px solid rgba(255, 255, 255, 0.25);
}
.ib-btn--ghost:hover { border-color: rgba(255, 255, 255, 0.5); background: rgba(255, 255, 255, 0.05); }

/* 페이퍼 섹션용 */
.ib-btn--ink {
    background: var(--ib-text);
    color: var(--ib-paper);
}
.ib-btn--ink:hover { box-shadow: 0 10px 26px rgba(28, 25, 19, 0.22); }

.ib-btn--line {
    background: transparent;
    color: var(--ib-text);
    border: 1px solid var(--ib-paper-line);
}
.ib-btn--line:hover { border-color: var(--ib-text); }

/* ============================================================
   1. HERO — Deep Tech GIS (다크 + 등고선)
   ============================================================ */
.ib-hero {
    position: relative;
    background:
        radial-gradient(85% 110% at 82% -8%, rgba(63, 216, 206, 0.13), transparent 55%),
        radial-gradient(70% 90% at 2% 108%, rgba(91, 141, 239, 0.14), transparent 60%),
        var(--ib-ink);
    color: var(--ib-ink-text);
    padding: calc(var(--ib-header-h) + 4.5rem) 0 4.5rem;
    overflow: hidden;
}

.ib-hero .ib-container {
    max-width: 1360px;
}

.ib-contour {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0.55;
    pointer-events: none;
}

.ib-hero-grid {
    position: relative;
    display: grid;
    grid-template-columns: minmax(590px, 0.95fr) minmax(560px, 1.05fr);
    gap: clamp(4rem, 6vw, 6.5rem);
    align-items: center;
}

.ib-hero-grid > div:first-child {
    max-width: 720px;
}

.ib-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    font-family: var(--ib-mono);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    color: #7FF0E6;
    border: 1px solid rgba(63, 216, 206, 0.35);
    background: rgba(63, 216, 206, 0.07);
    padding: 0.4rem 0.95rem;
    border-radius: 999px;
    margin-bottom: 1.6rem;
}

.ib-hero-badge i {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--ib-cyan);
    box-shadow: 0 0 8px rgba(63, 216, 206, 0.55);
}


.ib-hero-title {
    font-family: var(--ib-sans);
    font-size: clamp(2.1rem, 4.5vw, 3.55rem);
    font-weight: 800;
    line-height: 1.14;
    letter-spacing: -0.03em;
    margin: 0 0 1.3rem;
    color: #F4FAFD;
    word-break: keep-all;
    text-wrap: normal;
    white-space: nowrap;
}

.ib-hero-title .ib-grad {
    background: linear-gradient(92deg, var(--ib-cyan), #79A8FF);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.ib-hero-sub {
    font-size: clamp(1rem, 1.8vw, 1.2rem);
    line-height: 1.7;
    color: var(--ib-ink-muted);
    margin: 0 0 2rem;
    min-height: 3.4em;
    word-break: keep-all;
    transition:
        opacity 0.72s cubic-bezier(0.22, 1, 0.36, 1),
        transform 0.72s cubic-bezier(0.22, 1, 0.36, 1),
        filter 0.72s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: opacity, transform, filter;
}

.ib-hero-sub.is-changing {
    opacity: 0;
    transform: translateY(8px);
    filter: blur(1px);
}

.ib-hero-sub .text-english {
    font-family: 'Inter', var(--ib-sans);
    letter-spacing: 0;
}

.ib-hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 2.6rem;
}

.ib-hero-coords {
    font-family: var(--ib-mono);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    color: rgba(148, 167, 184, 0.65);
    border-top: 1px solid var(--ib-ink-line);
    padding-top: 1.1rem;
    display: flex;
    gap: 1.6rem;
    flex-wrap: wrap;
}

/* 제품 화면 프레임 */
.ib-screen {
    width: 100%;
    max-width: 660px;
    justify-self: end;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 14px;
    overflow: hidden;
    background: var(--ib-ink-2);
    box-shadow: 0 22px 56px rgba(0, 0, 0, 0.42);
    transition:
        transform 0.68s cubic-bezier(0.16, 1, 0.3, 1),
        border-color 0.68s ease,
        box-shadow 0.68s ease,
        opacity 0.68s ease;
}

.ib-screen:hover {
    transform: translateY(-4px);
    border-color: rgba(63, 216, 206, 0.28);
    box-shadow: 0 28px 70px rgba(0, 0, 0, 0.48);
}

.ib-screen-bar {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 0.65rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.03);
}

.ib-screen-bar b {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.14);
}

.ib-screen-bar span {
    margin-left: 0.6rem;
    font-family: var(--ib-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: rgba(148, 167, 184, 0.8);
}

.ib-screen .main_slide {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 10;
    background: var(--ib-ink-2);
}

.ib-screen .main_slide .swiper-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    transform: none !important;
}

.ib-screen .swiper-slide {
    position: absolute;
    inset: 0;
    width: 100% !important;
    height: 100%;
    opacity: 0;
    visibility: visible;
    background: var(--ib-ink-2);
    transform: scale(1.018);
    transition: none;
    will-change: opacity, transform;
    pointer-events: none;
}

.ib-screen .main_slide:not(.is-ready) .swiper-slide:first-child,
.ib-screen .swiper-slide.is-active {
    opacity: 1;
    z-index: 2;
    transform: scale(1);
}

.ib-screen .swiper-slide.is-leaving {
    opacity: 0;
    z-index: 1;
    transform: scale(1.01);
}

.ib-screen .swiper-slide img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
}

.ib-screen .main_slide::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 3;
    pointer-events: none;
    background: linear-gradient(180deg, rgba(8, 19, 31, 0.06), rgba(8, 19, 31, 0));
}

.ib-screen-pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 0.8rem 0 0.95rem;
}

.ib-bullet {
    width: 22px;
    height: 3px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.18);
    border: 0;
    padding: 0;
    appearance: none;
    cursor: pointer;
    transition:
        width 0.42s cubic-bezier(0.22, 1, 0.36, 1),
        background 0.42s ease,
        opacity 0.42s ease;
}

.ib-bullet.active {
    width: 30px;
    background: var(--ib-cyan);
}

.ib-bullet:hover,
.ib-bullet:focus-visible {
    opacity: 0.82;
    outline: none;
}

/* ============================================================
   2. SOLUTIONS — Editorial (페이퍼 + 번호 카드)
   ============================================================ */
.ib-solutions {
    background: var(--ib-paper);
    color: var(--ib-text);
    padding: 5.5rem 0 6rem;
    border-bottom: 1px solid var(--ib-paper-line);
}

.ib-solutions .ib-sec-lead { color: var(--ib-muted); }

.ib-sec-head { margin-bottom: 3rem; }

.ib-sol-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.1rem;
}

.ib-sol-card {
    display: flex;
    flex-direction: column;
    background: var(--ib-surface);
    border: 1px solid var(--ib-paper-line);
    border-radius: 14px;
    padding: 1.7rem 1.6rem 1.6rem;
    text-decoration: none;
    color: inherit;
    transition:
        transform 0.58s cubic-bezier(0.16, 1, 0.3, 1),
        border-color 0.58s ease,
        box-shadow 0.58s ease,
        opacity 0.58s ease;
}

.ib-sol-card:hover {
    transform: translateY(-2px);
    border-color: rgba(14, 124, 116, 0.45);
    box-shadow: 0 12px 30px rgba(28, 25, 19, 0.07);
}

.ib-sol-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.15rem;
}

.ib-sol-num {
    font-family: var(--ib-mono);
    font-size: 0.78rem;
    letter-spacing: 0.12em;
    color: var(--ib-gold);
}

.ib-sol-icon {
    color: var(--ib-teal);
    display: inline-flex;
}

.ib-sol-icon svg { width: 26px; height: 26px; }

.ib-sol-card h3 {
    font-size: 1.08rem;
    font-weight: 700;
    margin: 0 0 0.45rem;
    letter-spacing: -0.01em;
    color: var(--ib-text);
}

.ib-sol-card p {
    font-size: 0.88rem;
    line-height: 1.65;
    color: var(--ib-muted);
    margin: 0 0 1.2rem;
    word-break: keep-all;
    flex-grow: 1;
}

.ib-sol-link {
    font-size: 0.87rem;
    font-weight: 600;
    color: var(--ib-teal);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.ib-sol-link::after {
    content: "→";
    transition: transform 0.58s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.58s ease;
}

.ib-sol-card:hover .ib-sol-link::after { transform: translateX(3px); }

/* ============================================================
   3. ABOUT — Editorial 칼럼 분할
   ============================================================ */
.ib-about {
    background: var(--ib-paper);
    color: var(--ib-text);
    padding: 5.5rem 0 6rem;
    border-bottom: 1px solid var(--ib-paper-line);
}

.ib-about-grid {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: 3.5rem;
    align-items: start;
}

.ib-about-title {
    font-family: var(--ib-serif);
    font-weight: 700;
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    line-height: 1.28;
    letter-spacing: -0.01em;
    margin: 0;
    word-break: keep-all;
    text-wrap: balance;
}

.ib-about-title strong {
    font-weight: 700;
    color: var(--ib-teal);
}

.ib-about-col {
    border-left: 2px solid var(--ib-teal);
    padding-left: 1.6rem;
}

.ib-about-col p {
    font-size: 0.97rem;
    line-height: 1.85;
    color: var(--ib-muted);
    margin: 0 0 1rem;
    word-break: keep-all;
}

.ib-about-col .ib-btn { margin-top: 0.8rem; }

/* ============================================================
   4. R&D — Deep Tech 다크
   ============================================================ */
.ib-rnd {
    position: relative;
    background:
        radial-gradient(75% 100% at 90% 0%, rgba(91, 141, 239, 0.1), transparent 55%),
        var(--ib-ink);
    color: var(--ib-ink-text);
    padding: 5.5rem 0 6rem;
    overflow: hidden;
}

.ib-rnd .ib-sec-title { color: #F4FAFD; }
.ib-rnd .ib-sec-lead { color: var(--ib-ink-muted); }

.ib-rnd-wrap {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    margin-top: 3.2rem;
}

.ib-rnd .ib-sec-head,
.ib-rnd .ib-rnd-card,
.ib-rnd-core {
    opacity: 0;
    transform: translateY(34px);
    transition:
        opacity 0.95s cubic-bezier(0.22, 1, 0.36, 1),
        transform 0.95s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: opacity, transform;
}

.ib-rnd.is-visible .ib-sec-head,
.ib-rnd.is-visible .ib-rnd-core,
.ib-rnd.is-visible .ib-rnd-card {
    opacity: 1;
    transform: translateY(0);
}

.ib-rnd-col {
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
    flex: 1;
}

.ib-rnd-core {
    flex: 0 0 280px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.1rem;
    position: relative;
}

.ib-rnd-core::before,
.ib-rnd-core::after {
    content: '';
    position: absolute;
    top: 100px;
    left: 50%;
    width: 230px;
    height: 230px;
    border-radius: 50%;
    border: 1px solid rgba(63, 216, 206, 0.24);
    transform: translate(-50%, -50%) scale(0.92);
    opacity: 0;
    pointer-events: none;
}

.ib-rnd.is-visible .ib-rnd-core::before {
    animation: ib-rnd-ring 3.6s ease-out 0.45s infinite;
}

.ib-rnd.is-visible .ib-rnd-core::after {
    animation: ib-rnd-ring 3.6s ease-out 1.65s infinite;
}

.ib-rnd-core img {
    width: 210px;
    height: 210px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid rgba(63, 216, 206, 0.5);
    box-shadow: 0 0 0 8px rgba(63, 216, 206, 0.05), 0 18px 42px rgba(0, 0, 0, 0.38);
    transition:
        transform 0.68s cubic-bezier(0.16, 1, 0.3, 1),
        box-shadow 0.68s ease,
        border-color 0.68s ease,
        opacity 0.68s ease;
}

.ib-rnd.is-visible .ib-rnd-core img {
    animation: ib-rnd-float 5.2s ease-in-out 0.9s infinite;
}

.ib-rnd-core:hover img {
    transform: translateY(-4px) scale(1.025);
    border-color: rgba(63, 216, 206, 0.85);
    box-shadow: 0 0 0 10px rgba(63, 216, 206, 0.08), 0 22px 54px rgba(0, 0, 0, 0.46);
}

.ib-rnd-core h3 {
    font-family: var(--ib-mono);
    font-size: 1.05rem;
    letter-spacing: 0.22em;
    color: var(--ib-cyan);
    margin: 0;
}

.ib-rnd-card {
    border: 1px solid var(--ib-ink-line);
    border-radius: 8px;
    padding: 1.35rem 1.4rem;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.015));
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition:
        transform 0.62s cubic-bezier(0.16, 1, 0.3, 1),
        border-color 0.62s ease,
        background 0.62s ease,
        box-shadow 0.62s ease,
        opacity 0.62s ease;
}

.ib-rnd-card:hover {
    transform: translateY(-4px);
    border-color: rgba(63, 216, 206, 0.5);
    background: linear-gradient(180deg, rgba(63, 216, 206, 0.08), rgba(255, 255, 255, 0.018));
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.18);
}

.ib-rnd-card .ib-rnd-ic {
    color: var(--ib-cyan);
    flex-shrink: 0;
    margin-top: 0.15rem;
    transition:
        transform 0.58s cubic-bezier(0.16, 1, 0.3, 1),
        filter 0.58s ease,
        opacity 0.58s ease;
}

.ib-rnd-card:hover .ib-rnd-ic {
    transform: translateY(-1px) scale(1.08);
    filter: drop-shadow(0 0 10px rgba(63, 216, 206, 0.42));
}

.ib-rnd-card .ib-rnd-ic svg { width: 22px; height: 22px; }

.ib-rnd-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: #EAF3F8;
    margin: 0 0 0.3rem;
    letter-spacing: 0.01em;
}

.ib-rnd-card p {
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--ib-ink-muted);
    margin: 0;
    word-break: keep-all;
}

@keyframes ib-rnd-float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-6px);
    }
}

@keyframes ib-rnd-ring {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.86);
    }
    24% {
        opacity: 0.7;
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(1.16);
    }
}

/* ============================================================
   5. NEWS — Editorial 페이퍼
   ============================================================ */
.ib-news {
    background: var(--ib-paper);
    color: var(--ib-text);
    padding: 5.5rem 0 6rem;
    border-bottom: 1px solid var(--ib-paper-line);
}

.ib-news .ib-sec-lead { color: var(--ib-muted); }

.ib-news-label {
    font-family: var(--ib-mono);
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ib-gold);
    margin: 0 0 1.2rem;
    padding-top: 2.4rem;
    border-top: 1px solid var(--ib-paper-line);
}

.ib-news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.4rem;
    margin-bottom: 1rem;
}

.ib-news-card {
    background: var(--ib-surface);
    border: 1px solid var(--ib-paper-line);
    border-radius: 14px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    transition:
        transform 0.58s cubic-bezier(0.16, 1, 0.3, 1),
        border-color 0.58s ease,
        box-shadow 0.58s ease,
        opacity 0.58s ease;
}

.ib-news-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(28, 25, 19, 0.08);
    border-color: rgba(14, 124, 116, 0.4);
}

.ib-news-card img {
    width: 100%;
    height: 230px;
    object-fit: cover;
    display: block;
}

.ib-news-body {
    padding: 1.5rem 1.6rem 1.6rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.ib-news-date {
    font-family: var(--ib-mono);
    font-size: 0.76rem;
    letter-spacing: 0.1em;
    color: var(--ib-gold);
    margin-bottom: 0.7rem;
}

.ib-news-card h3 {
    font-size: 1.12rem;
    font-weight: 700;
    line-height: 1.5;
    margin: 0 0 1.1rem;
    word-break: keep-all;
    color: var(--ib-text);
}

.ib-news-more {
    margin-top: auto;
    font-size: 0.87rem;
    font-weight: 600;
    color: var(--ib-teal);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.ib-news-more::after {
    content: "→";
    transition: transform 0.58s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.58s ease;
}

.ib-news-card:hover .ib-news-more::after { transform: translateX(3px); }

/* 공지사항 리스트 */
.ib-anno-list {
    border-top: 1px solid var(--ib-paper-line);
}

.ib-anno-item {
    display: flex;
    align-items: baseline;
    gap: 1.6rem;
    padding: 1.15rem 0.2rem;
    border-bottom: 1px solid var(--ib-paper-line);
    text-decoration: none;
    color: inherit;
    transition: background 0.58s ease, opacity 0.58s ease;
}

.ib-anno-item:hover { background: rgba(14, 124, 116, 0.04); }

.ib-anno-date {
    font-family: var(--ib-mono);
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    color: var(--ib-gold);
    flex-shrink: 0;
}

.ib-anno-title {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--ib-text);
    word-break: keep-all;
    flex-grow: 1;
}

.ib-anno-arrow {
    color: var(--ib-teal);
    flex-shrink: 0;
    transition: transform 0.58s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.58s ease;
}

.ib-anno-item:hover .ib-anno-arrow { transform: translateX(3px); }

.ib-news-foot {
    text-align: center;
    margin-top: 2.6rem;
}

/* ============================================================
   6. CTA — Deep Tech 다크
   ============================================================ */
.ib-cta {
    position: relative;
    background:
        radial-gradient(80% 120% at 50% -20%, rgba(63, 216, 206, 0.14), transparent 60%),
        var(--ib-ink);
    color: var(--ib-ink-text);
    padding: 5.5rem 0 6rem;
    overflow: hidden;
    text-align: center;
}

.ib-cta .ib-sec-title { color: #F4FAFD; }

.ib-cta-desc {
    font-size: clamp(0.95rem, 1.5vw, 1.05rem);
    line-height: 1.85;
    color: var(--ib-ink-muted);
    max-width: 62ch;
    margin: 0 auto 2.2rem;
    word-break: keep-all;
}

.ib-cta-btns {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.8rem;
    position: relative;
}

/* ============================================================
   7. AX — AI Transformation (다크 섹션 + 카드 3장, index 삽입용)
   ============================================================ */
.ib-ax {
    position: relative;
    background:
        radial-gradient(80% 110% at 15% -10%, rgba(63, 216, 206, 0.12), transparent 55%),
        radial-gradient(70% 100% at 95% 108%, rgba(91, 141, 239, 0.12), transparent 60%),
        var(--ib-ink);
    color: var(--ib-ink-text);
    padding: 5.5rem 0 6rem;
    overflow: hidden;
    border-bottom: 1px solid var(--ib-ink-line);
}

.ib-ax .ib-sec-title { color: #F4FAFD; }
.ib-ax .ib-sec-lead { color: var(--ib-ink-muted); }
.ib-ax .ib-sec-head { position: relative; }

.ib-ax-grid {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.1rem;
}

.ib-ax-card {
    border: 1px solid var(--ib-ink-line);
    border-radius: 14px;
    padding: 1.7rem 1.6rem 1.8rem;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.015));
    transition:
        transform 0.58s cubic-bezier(0.16, 1, 0.3, 1),
        border-color 0.58s ease,
        opacity 0.58s ease;
}

.ib-ax-card:hover {
    transform: translateY(-2px);
    border-color: rgba(63, 216, 206, 0.45);
}

.ib-ax-num {
    font-family: var(--ib-mono);
    font-size: 0.82rem;
    letter-spacing: 0.14em;
    color: var(--ib-cyan);
    display: block;
    margin-bottom: 1.1rem;
}

.ib-ax-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #EAF3F8;
    margin: 0 0 0.55rem;
    letter-spacing: -0.01em;
    word-break: keep-all;
}

.ib-ax-card p {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--ib-ink-muted);
    margin: 0;
    word-break: keep-all;
}

.ib-ax-cta {
    position: relative;
    margin-top: 2.8rem;
    text-align: center;
}

/* ============================================================
   8. AX 서브페이지 (html/ax.html · en/ax.html)
   ============================================================ */
/* B-1 인트로 (다크) */
.ib-ax-hero {
    position: relative;
    background:
        radial-gradient(85% 110% at 82% -8%, rgba(63, 216, 206, 0.13), transparent 55%),
        radial-gradient(70% 90% at 2% 108%, rgba(91, 141, 239, 0.14), transparent 60%),
        var(--ib-ink);
    color: var(--ib-ink-text);
    padding: calc(var(--ib-header-h) + 4.5rem) 0 5rem;
    overflow: hidden;
}

.ib-ax-hero-inner {
    position: relative;
    max-width: 760px;
}

.ib-ax-hero-title {
    font-family: var(--ib-sans);
    font-size: clamp(2rem, 5vw, 3.4rem);
    font-weight: 800;
    line-height: 1.16;
    letter-spacing: -0.03em;
    color: #F4FAFD;
    margin: 0 0 1.3rem;
    word-break: keep-all;
    text-wrap: balance;
}

.ib-ax-hero-sub {
    font-size: clamp(1rem, 1.7vw, 1.18rem);
    line-height: 1.75;
    color: var(--ib-ink-muted);
    margin: 0 0 2.4rem;
    word-break: keep-all;
}

/* B-2 Why AX (페이퍼, 에디토리얼 칼럼) */
.ib-ax-why {
    background: var(--ib-paper);
    color: var(--ib-text);
    padding: 5.5rem 0 6rem;
    border-bottom: 1px solid var(--ib-paper-line);
}

.ib-ax-why-grid {
    display: grid;
    grid-template-columns: 1fr 1.15fr;
    gap: 3.5rem;
    align-items: start;
}

.ib-ax-why-body {
    border-left: 2px solid var(--ib-teal);
    padding-left: 1.6rem;
}

.ib-ax-why-body p {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--ib-muted);
    margin: 0 0 1.1rem;
    word-break: keep-all;
}

.ib-ax-why-body p:last-child { margin-bottom: 0; }

/* B-3 서비스 상세 (페이퍼, 번호 에디토리얼 블록) */
.ib-ax-services {
    background: var(--ib-paper);
    color: var(--ib-text);
    padding: 5.5rem 0 6rem;
    border-bottom: 1px solid var(--ib-paper-line);
}

.ib-ax-svc-list {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.ib-ax-svc {
    background: var(--ib-surface);
    border: 1px solid var(--ib-paper-line);
    border-radius: 14px;
    padding: 2rem 2rem 1.9rem;
    transition:
        border-color 0.58s ease,
        box-shadow 0.58s ease,
        opacity 0.58s ease;
}

.ib-ax-svc:hover {
    border-color: rgba(14, 124, 116, 0.4);
    box-shadow: 0 12px 30px rgba(28, 25, 19, 0.06);
}

.ib-ax-svc-head {
    display: flex;
    align-items: baseline;
    gap: 1.2rem;
    margin-bottom: 1.4rem;
}

.ib-ax-svc-num {
    font-family: var(--ib-mono);
    font-size: 1.05rem;
    letter-spacing: 0.1em;
    color: var(--ib-gold);
    flex-shrink: 0;
}

.ib-ax-svc-head h3 {
    font-family: var(--ib-serif);
    font-size: clamp(1.25rem, 2.4vw, 1.6rem);
    font-weight: 700;
    color: var(--ib-text);
    margin: 0 0 0.35rem;
    letter-spacing: -0.01em;
    word-break: keep-all;
}

.ib-ax-svc-sub {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--ib-muted);
    margin: 0;
    word-break: keep-all;
}

.ib-ax-svc-items {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem 1.6rem;
    border-top: 1px solid var(--ib-paper-line);
    padding-top: 1.5rem;
}

.ib-ax-svc-items li {
    position: relative;
    padding-left: 1.3rem;
    font-size: 0.92rem;
    line-height: 1.6;
    color: var(--ib-text);
    word-break: keep-all;
}

.ib-ax-svc-items li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--ib-teal);
}

/* B-4 진행 프로세스 (다크, 4단계) */
.ib-ax-process {
    position: relative;
    background:
        radial-gradient(75% 100% at 90% 0%, rgba(91, 141, 239, 0.1), transparent 55%),
        var(--ib-ink);
    color: var(--ib-ink-text);
    padding: 5.5rem 0 6rem;
    overflow: hidden;
}

.ib-ax-process .ib-sec-title { color: #F4FAFD; }

.ib-ax-steps {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.1rem;
    margin-top: 3rem;
}

.ib-ax-step {
    border: 1px solid var(--ib-ink-line);
    border-radius: 12px;
    padding: 1.6rem 1.4rem 1.7rem;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.015));
    transition:
        transform 0.58s cubic-bezier(0.16, 1, 0.3, 1),
        border-color 0.58s ease,
        opacity 0.58s ease;
}

.ib-ax-step:hover {
    transform: translateY(-2px);
    border-color: rgba(63, 216, 206, 0.45);
}

.ib-ax-step-num {
    font-family: var(--ib-mono);
    font-size: 0.82rem;
    letter-spacing: 0.14em;
    color: var(--ib-cyan);
    display: block;
    margin-bottom: 0.9rem;
}

.ib-ax-step h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: #EAF3F8;
    margin: 0 0 0.5rem;
    letter-spacing: -0.01em;
    word-break: keep-all;
}

.ib-ax-step p {
    font-size: 0.86rem;
    line-height: 1.65;
    color: var(--ib-ink-muted);
    margin: 0;
    word-break: keep-all;
}

/* B-5 Why IBC (페이퍼, 3포인트) */
.ib-ax-whyibc {
    background: var(--ib-paper);
    color: var(--ib-text);
    padding: 5.5rem 0 6rem;
    border-bottom: 1px solid var(--ib-paper-line);
}

.ib-ax-points {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.1rem;
}

.ib-ax-point {
    background: var(--ib-surface);
    border: 1px solid var(--ib-paper-line);
    border-radius: 14px;
    padding: 1.8rem 1.7rem;
    transition:
        transform 0.58s cubic-bezier(0.16, 1, 0.3, 1),
        border-color 0.58s ease,
        box-shadow 0.58s ease,
        opacity 0.58s ease;
}

.ib-ax-point:hover {
    transform: translateY(-2px);
    border-color: rgba(14, 124, 116, 0.4);
    box-shadow: 0 12px 30px rgba(28, 25, 19, 0.07);
}

.ib-ax-point-num {
    font-family: var(--ib-mono);
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    color: var(--ib-gold);
    display: block;
    margin-bottom: 1rem;
}

.ib-ax-point h3 {
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--ib-text);
    margin: 0 0 0.5rem;
    letter-spacing: -0.01em;
    word-break: keep-all;
}

.ib-ax-point p {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--ib-muted);
    margin: 0;
    word-break: keep-all;
}

/* ============================================================
   반응형
   ============================================================ */
@media (max-width: 991px) {
    .ib-hero-grid { grid-template-columns: 1fr; gap: 2.6rem; }
    .ib-hero-grid > div:first-child { max-width: none; }
    .ib-hero-title { white-space: normal; }
    .ib-screen { max-width: none; justify-self: stretch; }
    .ib-sol-grid { grid-template-columns: repeat(2, 1fr); }
    .ib-about-grid { grid-template-columns: 1fr; gap: 2rem; }
    .ib-rnd-wrap { flex-direction: column; gap: 2.4rem; }
    .ib-rnd-core { order: -1; }
    .ib-rnd-col {
        width: 100%;
        max-width: 560px;
    }
    .ib-ax-grid { grid-template-columns: 1fr; }
    .ib-ax-why-grid { grid-template-columns: 1fr; gap: 2rem; }
    .ib-ax-steps { grid-template-columns: repeat(2, 1fr); }
    .ib-ax-points { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .ib-hero { padding: calc(var(--ib-header-h) + 3rem) 0 3.2rem; }
    .ib-sol-grid { grid-template-columns: 1fr; }
    .ib-hero-cta .ib-btn,
    .ib-cta-btns .ib-btn { width: 100%; }
    .ib-anno-item { gap: 0.9rem; }
    .ib-anno-title { font-size: 0.88rem; }
    .ib-news-card img { height: 185px; }
    .ib-solutions, .ib-about, .ib-rnd, .ib-news, .ib-cta { padding: 3.6rem 0 4rem; }
    .ib-ax, .ib-ax-why, .ib-ax-services, .ib-ax-process, .ib-ax-whyibc { padding: 3.6rem 0 4rem; }
    .ib-ax-hero { padding: calc(var(--ib-header-h) + 3rem) 0 3.4rem; }
    .ib-ax-steps { grid-template-columns: 1fr; }
    .ib-ax-svc-items { grid-template-columns: 1fr; gap: 0.6rem; }
    .ib-ax-svc { padding: 1.6rem 1.4rem; }
}

/* 영문 페이지: 한글용 줄바꿈 규칙 해제 */
html[lang="en"] .ib-sec-title,
html[lang="en"] .ib-hero-title,
html[lang="en"] .ib-hero-sub,
html[lang="en"] .ib-about-title,
html[lang="en"] .ib-about-col p,
html[lang="en"] .ib-sol-card p,
html[lang="en"] .ib-news-card h3,
html[lang="en"] .ib-anno-title,
html[lang="en"] .ib-cta-desc,
html[lang="en"] .ib-rnd-card p,
html[lang="en"] .ib-sec-lead,
html[lang="en"] .ib-ax-card h3,
html[lang="en"] .ib-ax-card p,
html[lang="en"] .ib-ax-hero-title,
html[lang="en"] .ib-ax-hero-sub,
html[lang="en"] .ib-ax-why-body p,
html[lang="en"] .ib-ax-svc-head h3,
html[lang="en"] .ib-ax-svc-sub,
html[lang="en"] .ib-ax-svc-items li,
html[lang="en"] .ib-ax-step h3,
html[lang="en"] .ib-ax-step p,
html[lang="en"] .ib-ax-point h3,
html[lang="en"] .ib-ax-point p {
    word-break: normal;
    overflow-wrap: break-word;
}

html[lang="en"] .ib-hero-title {
    max-width: none;
    font-size: clamp(1.85rem, 2.75vw, 2.85rem);
    line-height: 1.16;
    letter-spacing: -0.025em;
    white-space: nowrap;
}

@media (min-width: 992px) and (max-width: 1280px) {
    html[lang="en"] .ib-hero-title {
        font-size: clamp(1.7rem, 2.55vw, 2.35rem);
    }
}

/* 모션 최소화 설정 존중 */
/* Main/AX interaction layer: subtle hover movement only where elements are interactive. */
.ib-btn,
.ib-sol-card,
.ib-rnd-card,
.ib-news-card,
.ib-anno-item,
.ib-ax-card,
.ib-ax-svc,
.ib-ax-step,
.ib-ax-point {
    transition:
        transform 580ms cubic-bezier(0.16, 1, 0.3, 1),
        box-shadow 580ms ease,
        border-color 580ms ease,
        background 580ms ease,
        background-color 580ms ease,
        color 320ms ease,
        opacity 580ms ease;
}

.ib-sol-link::after,
.ib-news-more::after,
.ib-anno-arrow {
    transition: transform 580ms cubic-bezier(0.16, 1, 0.3, 1), opacity 580ms ease;
}

@media (hover: hover) {
    .ib-btn:hover {
        transform: translateY(-2px);
    }

    .ib-sol-card:hover,
    .ib-rnd-card:hover,
    .ib-news-card:hover,
    .ib-ax-card:hover,
    .ib-ax-svc:hover,
    .ib-ax-step:hover,
    .ib-ax-point:hover {
        transform: translateY(-3px);
    }

    .ib-sol-card:hover .ib-sol-link::after,
    .ib-news-card:hover .ib-news-more::after,
    .ib-anno-item:hover .ib-anno-arrow {
        transform: translateX(4px);
    }
}

@media (prefers-reduced-motion: reduce) {
    .ib-btn,
    .ib-sol-card,
    .ib-news-card,
    .ib-rnd-card,
    .ib-anno-item,
    .ib-ax-card,
    .ib-ax-svc,
    .ib-ax-step,
    .ib-ax-point,
    .ib-sol-link::after,
    .ib-news-more::after,
    .ib-anno-arrow {
        transition: none;
    }

    .ib-rnd .ib-sec-head,
    .ib-rnd .ib-rnd-card,
    .ib-rnd-core {
        opacity: 1;
        transform: none;
        animation: none;
    }

    .ib-rnd-core::before,
    .ib-rnd-core::after {
        display: none;
    }

    .ib-rnd.is-visible .ib-rnd-core img {
        animation: none;
    }
}