:root {
    --navy: #0D1F3C;
    --navy2: #132948;
    --navy3: #1A3560;
    --blue: #1B5EC8;
    --blue2: #2B7FE8;
    --blue3: #4A9EFF;
    --orange: #F5A623;
    --orange2: #E8920F;
    --orange3: #FFB84D;
    --cyan: #00C2D4;
    --steel: #FFFFFF;
    --gray: #B8C8D8;
    --light: #E8EFF8;
    --white: #F4F8FF;
    --text: #EEF3FC;
    --muted: #6A8BAA;
    --font-primary: 'DM Sans', sans-serif;

    /* Theme Semantic Variables - Dark (Default) */
    --bg-body: var(--navy);
    --bg-body-alt: var(--navy2);
    --bg-nav: rgba(13, 31, 60, 0.96);
    --bg-nav-scrolled: rgba(13, 31, 60, 0.99);
    --bg-mobile-menu: rgba(13, 31, 60, 0.98);
    --bg-card: rgba(27, 94, 200, 0.08);
    --bg-chip: rgba(10, 22, 40, 0.7);
    --text-main: var(--text);
    --text-title: var(--white);
    --text-sub: var(--steel);
    --border-main: rgba(27, 94, 200, 0.2);
    --border-nav: rgba(27, 94, 200, 0.25);
    --border-nav-scrolled: rgba(27, 94, 200, 0.4);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);

    /* Project Thumb Gradients - Dark */
    --proj-t1-grad: linear-gradient(135deg, #06101E, #0D2244);
    --proj-t2-grad: linear-gradient(135deg, #060E18, #102040);
    --proj-t3-grad: linear-gradient(135deg, #080A10, #101420);
}

[data-theme="light"] {
    --bg-body: #FFFFFF;
    --bg-body-alt: #F8FAFC;
    --bg-nav: rgba(255, 255, 255, 0.96);
    --bg-nav-scrolled: rgba(255, 255, 255, 0.99);
    --bg-mobile-menu: rgba(255, 255, 255, 0.98);
    --bg-card: #F1F5F9;
    --bg-chip: #E2E8F0;
    --text-main: var(--navy);
    --text-title: var(--navy);
    --text-sub: var(--navy2);
    --border-main: rgba(13, 31, 60, 0.1);
    --border-nav: rgba(13, 31, 60, 0.1);
    --border-nav-scrolled: rgba(13, 31, 60, 0.15);
    --glass-bg: rgba(13, 31, 60, 0.05);
    --glass-border: rgba(13, 31, 60, 0.1);

    /* Project Thumb Gradients - Light */
    --proj-t1-grad: linear-gradient(135deg, #E2E8F0, #CBD5E1);
    --proj-t2-grad: linear-gradient(135deg, #F1F5F9, #E2E8F0);
    --proj-t3-grad: linear-gradient(135deg, #F8FAFC, #F1F5F9);
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0
}

html {
    scroll-behavior: smooth
}

body {
    font-family: var(--font-primary);
    background: var(--bg-body);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background 0.3s, color 0.3s;
}

/* ── NAVBAR ── */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    background: var(--bg-nav);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-nav);
    padding: 0 40px;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.3s;
}

nav.scrolled {
    background: var(--bg-nav-scrolled);
    border-bottom-color: var(--border-nav-scrolled)
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none
}

.logo-svg-wrap {
    height: 44px;
    display: flex;
    align-items: center
}

.logo-svg-wrap svg {
    height: 44px;
    width: auto
}

.logo-svg-wrap img {
    height: 100%;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 2px;
    list-style: none
}

.nav-links a {
    padding: 8px 13px;
    border-radius: 6px;
    color: var(--text-sub);
    font-size: 13.5px;
    font-weight: 400;
    text-decoration: none;
    transition: all 0.2s;
    white-space: nowrap;
}

.nav-links a:hover {
    color: var(--blue2);
    background: var(--glass-bg)
}

.nav-cta {
    background: linear-gradient(135deg, var(--blue), var(--blue2)) !important;
    color: #fff !important;
    border-radius: 6px !important
}

.nav-cta:hover {
    opacity: 0.9;
    transform: translateY(-1px)
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px
}

.theme-toggle {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 6px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.theme-toggle:hover {
    background: var(--blue);
    color: #fff;
    border-color: var(--blue);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.theme-toggle .sun-icon {
    display: none;
}

[data-theme="light"] .theme-toggle .sun-icon {
    display: block;
}

[data-theme="light"] .theme-toggle .moon-icon {
    display: none;
}

.lang-toggle {
    display: flex;
    gap: 4px;
    border: 1px solid var(--border-main);
    border-radius: 6px;
    padding: 3px
}

.lang-btn {
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    background: none;
    border: none;
    color: var(--muted);
    transition: all 0.2s
}

.lang-btn.active {
    background: var(--blue);
    color: #fff
}

/* hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 6px;
    border: none;
    background: none
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-sub);
    border-radius: 2px;
    transition: all 0.3s
}

.hamburger.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg)
}

.hamburger.open span:nth-child(2) {
    opacity: 0
}

.hamburger.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg)
}

/* mobile drawer */
.mobile-menu {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 190;
    background: var(--bg-mobile-menu);
    backdrop-filter: blur(20px);
    padding: 24px 24px;
    overflow-y: auto;
    flex-direction: column;
    gap: 4px;
}

.mobile-menu.open {
    display: flex
}

.mobile-menu a {
    display: block;
    padding: 14px 16px;
    border-radius: 8px;
    color: var(--text-sub);
    font-size: 15px;
    text-decoration: none;
    border: 1px solid rgba(27, 94, 200, 0.1);
    transition: all 0.2s;
}

.mobile-menu a:hover {
    background: rgba(27, 94, 200, 0.15);
    border-color: rgba(27, 94, 200, 0.4)
}

.mobile-menu .m-cta {
    background: linear-gradient(135deg, var(--blue), var(--blue2));
    color: #fff;
    border-color: transparent;
    text-align: center;
    font-weight: 600;
    margin-top: 12px
}

.mobile-lang {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(27, 94, 200, 0.2)
}

/* ── HERO SLIDESHOW ── */
#hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden
}

.slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1.2s ease;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.slide.active {
    opacity: 1;
    z-index: 1
}

/* Tech slide backgrounds using CSS geometric art */
.slide-bg {
    position: absolute;
    inset: 0;
    z-index: 0
}

.slide1 .slide-bg {
    background: linear-gradient(135deg, #050E1F 0%, #0D1F3C 40%, #132948 70%, #0A1628 100%)
}

.slide2 .slide-bg {
    background: linear-gradient(135deg, #050B18 0%, #091622 40%, #0D1F3C 70%, #061020 100%)
}

.slide3 .slide-bg {
    background: linear-gradient(160deg, #06101E 0%, #0C1B30 50%, #112238 100%)
}

/* circuit-like grid overlay */
.slide-grid {
    position: absolute;
    inset: 0;
    z-index: 1;
    background-image:
        linear-gradient(rgba(27, 94, 200, 0.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(27, 94, 200, 0.07) 1px, transparent 1px);
    background-size: 60px 60px;
}

/* Animated geometric shapes per slide */
.slide-art {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 55%;
    z-index: 2;
    pointer-events: none
}

.geo-circle {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(27, 94, 200, 0.2);
}

.geo-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid;
    animation: spinRing linear infinite;
}

@keyframes spinRing {
    from {
        transform: rotate(0deg)
    }

    to {
        transform: rotate(360deg)
    }
}

.pulse-dot {
    position: absolute;
    border-radius: 50%;
    animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {

    0%,
    100% {
        transform: scale(1);
        opacity: 1
    }

    50% {
        transform: scale(1.6);
        opacity: 0.5
    }
}

.data-line {
    position: absolute;
    background: linear-gradient(90deg, transparent, rgba(0, 194, 212, 0.5), transparent);
    height: 1px;
    animation: dataFlow 3s linear infinite
}

@keyframes dataFlow {
    0% {
        transform: translateX(-100%)
    }

    100% {
        transform: translateX(200%)
    }
}

/* glow */
.hero-glow {
    position: absolute;
    border-radius: 50%;
    pointer-events: none
}

.slide-content {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
    padding-top: 68px;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(27, 94, 200, 0.15);
    border: 1px solid rgba(27, 94, 200, 0.45);
    border-radius: 100px;
    padding: 6px 16px;
    font-size: 11.5px;
    letter-spacing: 1.5px;
    color: var(--cyan);
    text-transform: uppercase;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-tag .pulse {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--cyan);
    animation: pulse 2s infinite
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1)
    }

    50% {
        opacity: 0.5;
        transform: scale(1.5)
    }
}

.hero-h1 {
    font-family: var(--font-primary);
    font-size: clamp(36px, 5vw, 68px);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -2px;
    color: var(--steel);
    margin-bottom: 18px;
}

.hero-h1 .blue {
    color: var(--blue3)
}

.hero-h1 .orange {
    color: var(--orange)
}

.hero-sub {
    font-size: 15.5px;
    color: var(--steel);
    max-width: 540px;
    line-height: 1.75;
    margin-bottom: 36px
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 48px
}

.btn-hero-primary {
    background: linear-gradient(135deg, var(--blue), var(--blue2));
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 14px 26px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-primary);
}

.btn-hero-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(27, 94, 200, 0.4)
}

.btn-hero-secondary {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text);
    border-radius: 8px;
    padding: 14px 22px;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-primary);
}

.btn-hero-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.35)
}

.btn-hero-orange {
    background: linear-gradient(135deg, var(--orange2), var(--orange));
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 14px 22px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-primary);
}

.btn-hero-orange:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(245, 166, 35, 0.35)
}

/* slide indicators */
.slide-indicators {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 20;
}

.ind {
    width: 28px;
    height: 3px;
    border-radius: 2px;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.25);
    transition: all 0.4s;
}

.ind.active {
    background: var(--orange);
    width: 48px
}

/* progress bar */
.slide-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    z-index: 20;
    background: linear-gradient(90deg, var(--blue), var(--orange));
    animation: slideProgress 5s linear infinite;
}

@keyframes slideProgress {
    0% {
        width: 0
    }

    100% {
        width: 100%
    }
}

/* hero stats bar */
.hero-stats {
    display: flex;
    gap: 0;
    border-top: 1px solid rgba(27, 94, 200, 0.2);
    padding-top: 28px;
}

.stat-item {
    padding: 0 28px 0 0;
    margin-right: 28px;
    border-right: 1px solid rgba(27, 94, 200, 0.2)
}

.stat-item:last-child {
    border-right: none
}

.stat-num {
    font-family: var(--font-primary);
    font-size: 28px;
    font-weight: 800;
    color: var(--white);
    letter-spacing: -1px;
    line-height: 1
}

.stat-num em {
    font-style: normal;
    color: var(--orange)
}

.stat-label {
    font-size: 11px;
    color: var(--muted);
    margin-top: 4px;
    letter-spacing: 0.5px
}

/* scroll hint */
.scroll-hint {
    position: absolute;
    bottom: 60px;
    right: 40px;
    z-index: 20;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    font-size: 10px;
    letter-spacing: 1.5px;
    color: var(--muted);
    text-transform: uppercase;
}

.scroll-arrow {
    width: 1px;
    height: 40px;
    background: linear-gradient(var(--muted), transparent);
    position: relative
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: -3px;
    border: 3.5px solid transparent;
    border-top-color: var(--muted)
}

/* ── INTRO STRIP ── */
#intro {
    padding: 0;
    background: var(--bg-body-alt);
    border-bottom: 1px solid var(--border-nav)
}

.intro-grid {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.intro-item {
    padding: 28px 24px;
    text-align: center;
    border-right: 1px solid rgba(27, 94, 200, 0.15);
    transition: background 0.2s;
}

.intro-item:last-child {
    border-right: none
}

.intro-item:hover {
    background: rgba(27, 94, 200, 0.06)
}

.intro-icon {
    font-size: 26px;
    margin-bottom: 8px
}

.intro-label {
    font-size: 10.5px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 4px
}

.intro-value {
    font-family: var(--font-primary);
    font-size: 15.5px;
    font-weight: 700;
    color: var(--text-sub)
}

/* ── SECTIONS COMMON ── */
section {
    padding: 90px 40px
}

.container {
    max-width: 1200px;
    margin: 0 auto
}

.section-tag {
    font-size: 10.5px;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--orange);
    font-weight: 600;
    margin-bottom: 12px
}

.section-h {
    font-family: var(--font-primary);
    font-size: clamp(26px, 3.5vw, 42px);
    font-weight: 700;
    color: var(--text-title);
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 14px
}

.section-p {
    font-size: 14.5px;
    color: var(--text-sub);
    max-width: 520px;
    line-height: 1.75
}

/* ── ABOUT ── */
#about {
    background: var(--bg-body)
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 32px
}

.astat {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    padding: 20px;
    transition: border-color 0.2s;
}

.astat:hover {
    border-color: rgba(27, 94, 200, 0.5)
}

.astat-num {
    font-family: var(--font-primary);
    font-size: 32px;
    font-weight: 800;
    color: var(--text-title);
    letter-spacing: -1px
}

.astat-num em {
    font-style: normal;
    color: var(--orange)
}

.astat-label {
    font-size: 12px;
    color: var(--text-sub);
    margin-top: 4px
}

.about-values {
    margin-top: 28px;
    display: flex;
    flex-direction: column;
    gap: 12px
}

.aval {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 16px 18px;
    background: rgba(27, 94, 200, 0.06);
    border: 1px solid rgba(27, 94, 200, 0.12);
    border-radius: 10px;
    transition: border-color 0.2s
}

.aval:hover {
    border-color: rgba(27, 94, 200, 0.4)
}

.aval-icon {
    width: 34px;
    height: 34px;
    flex-shrink: 0;
    background: rgba(27, 94, 200, 0.18);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    color: var(--cyan)
}

.aval-t {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--text-title);
    margin-bottom: 3px
}

.aval-d {
    font-size: 12.5px;
    color: var(--text-sub);
    line-height: 1.6
}

/* About visual */
.about-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px
}

.eco-diagram {
    position: relative;
    width: 340px;
    height: 340px;
    margin: 0 auto
}

.eco-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 110px;
    height: 110px;
    background: linear-gradient(135deg, var(--blue), var(--blue2));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    box-shadow: 0 0 40px rgba(27, 94, 200, 0.4);

}

.eco-center img {
    height: 52px;
    width: auto
}

.eco-ring1 {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200px;
    height: 200px;
    transform: translate(-50%, -50%);
    border: 1px solid rgba(27, 94, 200, 0.3);
    border-radius: 50%;
    animation: spinRing 25s linear infinite;
}

.eco-ring2 {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 320px;
    height: 320px;
    transform: translate(-50%, -50%);
    border: 1px dashed rgba(245, 166, 35, 0.2);
    border-radius: 50%;
    animation: spinRing 40s linear infinite reverse;
}

.eco-node {
    position: absolute;
    background: var(--navy2);
    border: 1px solid rgba(27, 94, 200, 0.45);
    border-radius: 8px;
    padding: 7px 13px;
    font-size: 11px;
    font-weight: 500;
    color: var(--steel);
    white-space: nowrap;
    z-index: 5;
    transition: all 0.25s;
    cursor: default;
}

.eco-node:hover {
    border-color: var(--orange);
    color: var(--orange)
}

/* ── PILLARS ── */
#pillars {
    background: var(--bg-body-alt)
}

.pillars-intro {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 48px;
    gap: 40px
}

.pillars-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.pillar-card {
    background: var(--bg-body);
    padding: 40px 36px 44px;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    position: relative;
    transition: all 0.3s;
    overflow: hidden
}

.pillar-card:hover {
    transform: translateY(-8px);
    background: var(--bg-body-alt);
    border-color: rgba(27, 94, 200, 0.45)
}

.pillar-icon {
    width: 60px;
    height: 60px;
    background: var(--bg-body);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 24px;
    border: 1px solid var(--glass-border);
}
.pillar-icon-box{
    padding: 2px;
}
.pillar-h {
    font-family: var(--font-primary);
    font-size: 20px;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: 12px
}

.pillar-p {
    font-size: 13.5px;
    color: var(--text-sub);
    line-height: 1.6;
    margin-bottom: 24px
}

.pillar-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px
}

.ptag {
    background: rgba(27, 94, 200, 0.1);
    border: 1px solid rgba(27, 94, 200, 0.22);
    border-radius: 4px;
    padding: 3px 10px;
    font-size: 11px;
    color: var(--text-sub)
}

/* ── SOLUTIONS ── */
#solutions {
    background: var(--bg-body)
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-top: 44px
}

.sol-card {
    background: var(--bg-card);
    border: 1px solid var(--border-main);
    border-radius: 12px;
    padding: 26px 22px;
    transition: all 0.25s;
}

.sol-card:hover {
    border-color: rgba(245, 166, 35, 0.5);
    transform: translateY(-4px)
}

.sol-icon {
    width: 46px;
    height: 46px;
    background: var(--glass-bg);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 21px;
    margin-bottom: 14px;
    border: 1px solid var(--glass-border);
}

.sol-title {
    font-size: 14.5px;
    font-weight: 600;
    color: var(--text-title);
    margin-bottom: 8px
}

.sol-text {
    font-size: 12.5px;
    color: var(--text-sub);
    line-height: 1.65
}

/* ── ORG CHART ── */
#orgchart {
    background: var(--bg-body-alt)
}

.org-wrap {
    margin-top: 44px
}

.org-top {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    margin-bottom: 0
}

.org-box {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    padding: 11px 24px;
    text-align: center;
    white-space: nowrap;
    cursor: default;
    transition: all 0.2s;
}

.org-box:hover {
    filter: brightness(1.1)
}

.ob-primary {
    background: var(--bg-card);
    border: 1.5px solid var(--border-main);
    color: var(--text-title);
    width: 280px
}

.ob-chair {
    background: var(--bg-card);
    border: 1.5px solid var(--border-main);
    color: var(--text-title);
    width: 260px
}

.ob-ceo {
    background: linear-gradient(135deg, var(--orange2), var(--orange));
    color: #fff;
    width: 320px;
    padding: 14px 24px;
    font-size: 14px
}

.ob-control {
    background: rgba(45, 160, 80, 0.15);
    border: 1.5px solid rgba(45, 160, 80, 0.5);
    color: #4ADE80;
    font-size: 12px;
    padding: 9px 18px
}

.org-connector-v {
    width: 2px;
    height: 20px;
    background: var(--border-main);
    margin: 0 auto
}

.org-connector-v-orange {
    width: 2px;
    height: 20px;
    background: rgba(245, 166, 35, 0.5);
    margin: 0 auto
}

.ceo-row {
    display: flex;
    align-items: center;
    gap: 0;
    justify-content: center;
    margin: 0
}

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

.control-branch {
    display: flex;
    align-items: center;
    gap: 0
}

.h-line {
    height: 1.5px;
    background: rgba(45, 160, 80, 0.35);
    width: 32px
}

/* blocks row */
.org-blocks {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 10px;
    margin-top: 24px;
    position: relative
}

.org-blocks::before {
    content: '';
    position: absolute;
    top: -24px;
    left: 8%;
    right: 8%;
    height: 1.5px;
    background: linear-gradient(90deg, transparent, var(--border-main) 20%, var(--border-main) 80%, transparent);
}

.org-block {
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border-main);
    transition: all 0.25s;
    background: var(--bg-body);
}

.org-block:hover {
    transform: translateY(-3px);
    border-color: rgba(27, 94, 200, 0.5)
}

.ob-header {
    padding: 12px 10px;
    text-align: center;
    font-size: 11.5px;
    font-weight: 700;
    line-height: 1.3
}

.ob-items {
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 6px
}

.ob-item {
    font-size: 10.5px;
    color: var(--text-sub);
    padding: 5px 8px;
    background: var(--bg-card);
    border-radius: 5px;
    display: flex;
    align-items: flex-start;
    gap: 5px;
    line-height: 1.4
}

.ob-item::before {
    content: '·';
    color: var(--blue2);
    flex-shrink: 0;
    margin-top: 1px
}

/* block colors */
.bc1 .ob-header {
    background: rgba(27, 94, 200, 0.85);
    color: #fff
}

.bc2 .ob-header {
    background: rgba(30, 80, 160, 0.85);
    color: #fff
}

.bc3 .ob-header {
    background: rgba(210, 100, 20, 0.85);
    color: #fff
}

.bc4 .ob-header {
    background: rgba(80, 40, 160, 0.85);
    color: #fff
}

.bc5 .ob-header {
    background: rgba(20, 130, 70, 0.85);
    color: #fff
}

.bc6 .ob-header {
    background: rgba(180, 30, 60, 0.85);
    color: #fff
}

/* connector from CEO to blocks */
.org-v-connectors {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    margin-top: 0;
    gap: 10px
}

.org-v-connectors>div {
    display: flex;
    justify-content: center
}

.org-v-connectors>div::after {
    content: '';
    display: block;
    width: 2px;
    height: 18px;
    background: rgba(27, 94, 200, 0.3)
}

/* ecosystem row */
.eco-row {
    margin-top: 24px;
    background: var(--bg-body);
    border: 1px solid var(--border-main);
    border-radius: 12px;
    padding: 20px;
}

.eco-row-title {
    text-align: center;
    font-size: 12px;
    font-weight: 700;
    color: var(--blue3);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-main)
}

.eco-row-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 10px
}

.eco-partner {
    background: var(--bg-card);
    border: 1px solid var(--border-main);
    border-radius: 8px;
    padding: 12px 10px;
    text-align: center;
    transition: all 0.2s;
}

.eco-partner:hover {
    border-color: rgba(245, 166, 35, 0.5);
    background: rgba(245, 166, 35, 0.06)
}

.ep-name {
    font-size: 11.5px;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: 6px
}

.ep-item {
    font-size: 10px;
    color: var(--muted);
    line-height: 1.5
}

/* ── ECOSYSTEM ───────────────────────────── */
#ecosystem {
    background: var(--bg-body-alt);
}

.eco-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
    margin-top: 48px;
}

.eco-partner-group {
    margin-bottom: 32px;
}

.eco-group-label {
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 14px;
    padding-left: 14px;
    border-left: 2px solid var(--blue);
}

.eco-partner-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.eco-chip {
    background: var(--bg-chip);
    border: 1px solid var(--border-main);
    border-radius: 6px;
    padding: 8px 14px;
    font-size: 12.5px;
    font-weight: 500;
    color: var(--text-sub);
    transition: all 0.2s;
    cursor: default;
}

.eco-chip:hover {
    border-color: var(--cyan);
    color: var(--cyan);
}

.eco-chip.featured {
    border-color: rgba(0, 194, 212, 0.5);
    color: var(--cyan);
    background: rgba(0, 194, 212, 0.06);
}

.eco-desc {
    background: var(--bg-card);
    border: 1px solid var(--border-main);
    border-radius: 16px;
    padding: 40px;
    height: 100%;
}

.eco-model {
    font-family: var(--font-primary);
    font-size: 22px;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: 16px;
    line-height: 1.3;
}
.eco-model-des{
    font-size: 13.5px;
    color: var(--text-sub);
    line-height: 1.7;
}
.eco-model em {
    font-style: normal;
    color: var(--cyan);
}

.eco-flow {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 28px;
}

.eco-flow-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    background: var(--glass-bg);
    font-size: 13.5px;
    color: var(--text-sub);
    border: 1px solid var(--glass-border);
}

.eco-flow-item .step-num {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    background: var(--blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    color: #fff;
}

/* ── ROADMAP ─────────────────────────────── */
#roadmap {
    background: var(--bg-body);
}

.roadmap-wrap {
    margin-top: 56px;
    position: relative;
}

.roadmap-line {
    position: absolute;
    top: 32px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-main) 20%, var(--border-main) 80%, transparent);
}

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

.phase-card {
    background: var(--bg-card);
    border: 1px solid var(--border-main);
    border-radius: 12px;
    padding: 0 0 28px;
    overflow: hidden;
    transition: all 0.3s;
}

.phase-card:hover {
    border-color: rgba(21, 96, 189, 0.5);
    transform: translateY(-4px);
}

.phase-header {
    padding: 24px 24px 20px;
    border-bottom: 1px solid var(--border-main);
}

.phase-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.badge-current {
    background: rgba(0, 194, 212, 0.15);
    color: var(--cyan);
}

.badge-next {
    background: rgba(21, 96, 189, 0.2);
    color: var(--blue2);
}

.badge-future {
    background: rgba(232, 160, 32, 0.15);
    color: var(--gold);
}

.phase-name {
    font-family: var(--font-primary);
    font-size: 17px;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: 6px;
}

.phase-tag {
    font-size: 12px;
    color: var(--muted);
}

.phase-items {
    padding: 20px 24px 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.phase-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13px;
    color: var(--text-sub);
}

.phase-item::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--blue);
    margin-top: 7px;
    flex-shrink: 0;
}

/* ── PROJECTS ── */
#projects {
    background: var(--bg-body-alt)
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-top: 44px
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-main);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s;
}

.project-card:hover {
    border-color: rgba(245, 166, 35, 0.4);
    transform: translateY(-4px)
}

.project-thumb {
    height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 46px;
    position: relative;
    overflow: hidden;
}

.project-thumb.t1 {
    background: var(--proj-t1-grad)
}

.project-thumb.t2 {
    background: var(--proj-t2-grad)
}

.project-thumb.t3 {
    background: var(--proj-t3-grad)
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(transparent 40%, var(--bg-body-alt))
}

.project-cat {
    position: absolute;
    top: 10px;
    left: 10px;
    background: var(--blue);
    border-radius: 4px;
    padding: 3px 8px;
    font-size: 10px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #fff;
    font-weight: 600;
}

.project-body {
    padding: 18px
}

.project-title {
    font-size: 14.5px;
    font-weight: 600;
    color: var(--text-title);
    margin-bottom: 6px
}

.project-text {
    font-size: 12.5px;
    color: var(--text-sub);
    line-height: 1.6
}

/* ── NEWS ── */
#news {
    background: var(--bg-body-alt)
}

.news-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 18px;
    margin-top: 44px
}

.news-featured {
    background: var(--bg-body);
    border: 1px solid var(--border-main);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.25s
}

.news-featured:hover {
    border-color: rgba(27, 94, 200, 0.5)
}

.news-thumb {
    height: 190px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 52px;
    background: var(--proj-t1-grad)
}

.news-body {
    padding: 22px
}

.news-meta {
    font-size: 10.5px;
    color: var(--muted);
    margin-bottom: 8px;
    letter-spacing: 0.5px
}

.news-title-big {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-title);
    line-height: 1.4;
    margin-bottom: 8px
}

.news-text {
    font-size: 12.5px;
    color: var(--text-sub);
    line-height: 1.65
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 10px
}

.news-item {
    background: var(--bg-body);
    border: 1px solid var(--border-main);
    border-radius: 10px;
    padding: 14px;
    transition: all 0.2s
}

.news-item:hover {
    border-color: rgba(27, 94, 200, 0.4)
}

.news-item-date {
    font-size: 10.5px;
    color: var(--muted);
    margin-bottom: 5px
}

.news-item-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-title);
    line-height: 1.45
}

.download-strip {
    background: linear-gradient(90deg, rgba(27, 94, 200, 0.12), rgba(245, 166, 35, 0.08));
    border: 1px solid var(--border-main);
    border-radius: 12px;
    padding: 18px 26px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 28px;
}

.dl-text {
    font-size: 14px;
    color: var(--text-title);
    font-weight: 500
}

.dl-sub {
    font-size: 11.5px;
    color: var(--text-sub);
    margin-top: 2px
}

.dl-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 10px 18px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-main);
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}

.dl-btn:hover {
    background: var(--blue);
    color: #fff;
}

/* ── CONTACT ── */
#contact {
    background: var(--bg-body)
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    margin-top: 44px
}

.contact-point {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    margin-bottom: 22px
}

.contact-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    background: var(--glass-bg);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    border: 1px solid var(--glass-border);
}

.contact-label {
    font-size: 10.5px;
    color: var(--muted);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 3px
}

.contact-value {
    font-size: 13.5px;
    color: var(--text-title);
    font-weight: 500
}

.contact-form {
    background: var(--bg-body-alt);
    border: 1px solid var(--border-main);
    border-radius: 16px;
    padding: 32px
}

.form-h {
    font-family: var(--font-primary);
    font-size: 16px;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: 20px
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-bottom: 14px
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 14px
}

.form-group label {
    font-size: 11.5px;
    color: var(--muted);
    letter-spacing: 0.5px
}

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--bg-body);
    border: 1px solid var(--border-main);
    border-radius: 8px;
    padding: 11px 13px;
    font-size: 13px;
    color: var(--text-main);
    font-family: var(--font-primary);
    transition: border-color 0.2s;
    outline: none;
    -webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--blue)
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--muted);
    opacity: 0.7
}

.form-group select option {
    background: var(--bg-body-alt);
    color: var(--text-main);
}

.form-group textarea {
    resize: vertical;
    min-height: 90px
}

.form-submit {
    width: 100%;
    background: linear-gradient(135deg, var(--blue), var(--blue2));
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 13px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--font-primary);
    transition: all 0.2s;
}

.form-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(27, 94, 200, 0.4)
}

.guarantee-box {
    margin-top: 28px;
    padding: 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
}

.g-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-title);
    margin-bottom: 8px
}

.g-text {
    font-size: 12px;
    color: var(--text-sub);
    line-height: 1.7
}

.g-text strong {
    color: var(--cyan)
}

/* ── FLOATING ── */
.float-actions {
    position: fixed;
    bottom: 28px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 100
}

.float-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    font-size: 19px
}

.float-zalo {
    background: #0068FF;
    color: #fff;
    box-shadow: 0 4px 18px rgba(0, 104, 255, 0.4)
}

.float-zalo:hover {
    transform: scale(1.08)
}

.float-phone {
    background: var(--orange);
    color: #fff;
    box-shadow: 0 4px 18px rgba(245, 166, 35, 0.4);
    animation: ring 3s infinite
}

@keyframes ring {

    0%,
    88%,
    100% {
        transform: rotate(0)
    }

    91% {
        transform: rotate(12deg)
    }

    95% {
        transform: rotate(-10deg)
    }
}

.float-phone:hover {
    animation: none;
    transform: scale(1.08)
}

/* ── FOOTER ── */
footer {
    background: var(--bg-body-alt);
    border-top: 1px solid var(--border-main);
    padding: 56px 40px 28px
}

.footer-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 44px;
    padding-bottom: 44px;
    border-bottom: 1px solid var(--border-main);
    margin-bottom: 28px
}

.footer-logo-wrap {
    margin-bottom: 14px;
    height: 50px
}

.footer-logo-wrap img {
    height: 100%
}

.footer-tagline {
    font-size: 12.5px;
    color: var(--muted);
    line-height: 1.65;
    max-width: 250px;
    margin-bottom: 16px
}

.footer-h {
    font-size: 11px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-title);
    font-weight: 600;
    margin-bottom: 14px
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 9px
}

.footer-links a {
    font-size: 12.5px;
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s
}

.footer-links a:hover {
    color: var(--white)
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px
}

.footer-copy {
    font-size: 11.5px;
    color: var(--muted)
}

.footer-certs {
    display: flex;
    gap: 7px;
    font-size: 11.5px;
    color: var(--muted)
}

.cert-badge {
    background: rgba(27, 94, 200, 0.12);
    border: 1px solid rgba(27, 94, 200, 0.28);
    border-radius: 4px;
    padding: 4px 9px;
    font-size: 10px;
    color: var(--steel);
    letter-spacing: 1px
}

/* ── REVEAL ── */
.reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: all 0.55s ease
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0)
}

/* ── RESPONSIVE ── */
@media(max-width:1024px) {
    nav {
        padding: 0 20px
    }

    .nav-links {
        display: none
    }

    .hamburger {
        display: flex
    }

    .lang-toggle {
        display: none
    }

    section {
        padding: 70px 20px
    }

    #intro .intro-grid {
        padding: 0 20px
    }

    nav {
        height: 60px
    }

    .mobile-menu {
        top: 60px
    }

    .slide-content {
        padding: 0 20px;
        padding-top: 60px
    }

    .hero-h1 {
        font-size: clamp(30px, 6vw, 52px)
    }

    .hero-actions {
        flex-direction: column;
        max-width: 280px
    }

    .btn-hero-primary,
    .btn-hero-secondary,
    .btn-hero-orange {
        justify-content: center
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 20px
    }

    .hero-stats .stat-item {
        border-right: none;
        padding: 0
    }

    .about-grid,
    .contact-grid,
    .eco-flow-grid {
        grid-template-columns: 1fr;
        gap: 40px
    }

    .pillars-grid,
    .solutions-grid,
    .projects-grid,
    .roadmap-phases {
        grid-template-columns: 1fr
    }

    .news-grid {
        grid-template-columns: 1fr
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 28px
    }

    .org-blocks,
    .eco-row-grid,
    .org-v-connectors {
        grid-template-columns: repeat(3, 1fr)
    }

    .intro-grid {
        grid-template-columns: repeat(2, 1fr)
    }

    .intro-item:nth-child(2) {
        border-right: none
    }

    .about-visual {
        display: none
    }

    .form-row {
        grid-template-columns: 1fr
    }

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

    .pillars-intro {
        flex-direction: column;
        align-items: flex-start
    }

    .slide-art {
        display: none
    }
}

@media(max-width:600px) {
    .footer-grid {
        grid-template-columns: 1fr
    }

    .org-blocks,
    .eco-row-grid,
    .org-v-connectors {
        grid-template-columns: repeat(2, 1fr)
    }

    .intro-grid {
        grid-template-columns: 1fr 1fr
    }

    .astat,
    .about-stats {
        grid-template-columns: 1fr
    }

    .hero-stats .stat-item:nth-child(n+3) {
        display: none
    }
    .eco-grid{
        grid-template-columns: auto;
    }
}