/* ==========================================================
   Watson Trading Co., Limited — watsontra.com
   Dark theme stylesheet
   ========================================================== */

:root {
    --bg-0: #0a0e1a;
    --bg-1: #0f1419;
    --bg-2: #141a26;
    --bg-3: #1a2233;
    --border: rgba(148, 163, 184, 0.12);
    --border-strong: rgba(148, 163, 184, 0.22);
    --text-0: #f1f5f9;
    --text-1: #cbd5e1;
    --text-2: #94a3b8;
    --text-3: #64748b;
    --accent: #22d3ee;
    --accent-2: #06b6d4;
    --accent-glow: rgba(34, 211, 238, 0.35);
    --green: #34d399;
    --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
    --radius: 14px;
    --radius-sm: 8px;
    --container: 1240px;
    --header-h: 92px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
    background: var(--bg-0);
    color: var(--text-1);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

a {
    color: var(--accent);
    text-decoration: none;
    transition: color .2s ease;
}

a:hover { color: var(--accent-2); }

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 28px;
}

/* ====================== Header ====================== */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    height: var(--header-h);
    background: rgba(10, 14, 26, 0.78);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--border);
    transition: background .3s ease;
}

.site-header.scrolled {
    background: rgba(10, 14, 26, 0.94);
}

.header-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-0);
    font-weight: 600;
}

.brand-logo {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    display: block;
}

.footer-logo {
    width: 180px;
    height: auto;
    display: block;
    margin-bottom: 16px;
}

.brand-name {
    font-size: 19px;
    letter-spacing: 0.4px;
    font-weight: 800;
    line-height: 1.1;
}

.brand-name span {
    display: block;
    font-size: 11px;
    color: var(--text-2);
    font-weight: 500;
    letter-spacing: 1.4px;
    text-transform: uppercase;
    margin-top: 3px;
}

.nav-main {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-main a {
    color: var(--text-1);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    transition: background .2s, color .2s;
}

.nav-main a:hover {
    background: rgba(34, 211, 238, 0.08);
    color: var(--accent);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.lang-switch {
    display: inline-flex;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    overflow: hidden;
    font-size: 12px;
    font-weight: 600;
}

.lang-switch a {
    padding: 6px 12px;
    color: var(--text-2);
    background: transparent;
    transition: background .2s, color .2s;
}

.lang-switch a:hover {
    background: rgba(34, 211, 238, 0.08);
    color: var(--accent);
}

.lang-switch a.active {
    background: var(--accent);
    color: var(--bg-0);
}

.btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
    color: var(--bg-0);
    font-weight: 600;
    font-size: 14px;
    padding: 10px 18px;
    border-radius: 999px;
    transition: transform .2s, box-shadow .2s;
    box-shadow: 0 4px 24px var(--accent-glow);
}

.btn-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 30px var(--accent-glow);
    color: var(--bg-0);
}

.menu-toggle {
    display: none;
    background: transparent;
    border: 0;
    color: var(--text-0);
    cursor: pointer;
    padding: 6px;
}

/* ====================== Hero ====================== */
.hero {
    position: relative;
    min-height: 100vh;
    padding: calc(var(--header-h) + 80px) 0 100px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(34, 211, 238, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 60%, rgba(6, 182, 212, 0.10) 0%, transparent 50%),
        linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 100%);
    z-index: -2;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(148, 163, 184, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: -1;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.hero-content .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1.4px;
    margin-bottom: 24px;
}

.hero-content .eyebrow::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent);
}

.hero-content h1 {
    font-size: clamp(38px, 5.6vw, 64px);
    line-height: 1.08;
    color: var(--text-0);
    letter-spacing: -1.2px;
    margin-bottom: 24px;
    font-weight: 700;
}

.hero-content h1 .accent {
    background: linear-gradient(135deg, var(--accent) 0%, var(--green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p.lead {
    font-size: 18px;
    color: var(--text-1);
    margin-bottom: 36px;
    max-width: 560px;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 50px;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--border-strong);
    color: var(--text-0);
    background: rgba(255, 255, 255, 0.02);
    padding: 14px 26px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 15px;
    transition: background .2s, border-color .2s, transform .2s;
}

.btn-secondary:hover {
    background: rgba(34, 211, 238, 0.08);
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
    color: var(--bg-0);
    padding: 14px 28px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 15px;
    transition: transform .2s, box-shadow .2s;
    box-shadow: 0 4px 24px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 35px var(--accent-glow);
    color: var(--bg-0);
}

.hero-stats {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
}

.hero-stat .num {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-0);
    line-height: 1;
    margin-bottom: 6px;
}

.hero-stat .num span {
    color: var(--accent);
}

.hero-stat .label {
    font-size: 13px;
    color: var(--text-2);
}

/* Hero visual */
.hero-visual {
    position: relative;
    height: 520px;
}

.hv-orbit {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hv-core {
    width: 200px; height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.25) 0%, rgba(34, 211, 238, 0) 70%);
    position: absolute;
    animation: pulse 4s ease-in-out infinite;
}

.hv-disc {
    width: 360px; height: 360px;
    border-radius: 50%;
    border: 1px solid var(--border-strong);
    position: absolute;
    animation: rotate 30s linear infinite;
}

.hv-disc.d2 {
    width: 480px; height: 480px;
    border-style: dashed;
    opacity: 0.5;
    animation-duration: 60s;
    animation-direction: reverse;
}

.hv-disc.d3 {
    width: 600px; height: 600px;
    opacity: 0.25;
    animation-duration: 90s;
}

.hv-battery {
    position: relative;
    width: 180px;
    z-index: 2;
}

.hv-icon {
    position: absolute;
    width: 56px; height: 56px;
    border-radius: 14px;
    background: var(--bg-2);
    border: 1px solid var(--border-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    box-shadow: var(--shadow);
    animation: float 4s ease-in-out infinite;
}

.hv-icon.i1 { top: 5%; left: 5%; animation-delay: 0s; }
.hv-icon.i2 { top: 12%; right: 8%; animation-delay: 0.6s; }
.hv-icon.i3 { bottom: 18%; left: 12%; animation-delay: 1.2s; }
.hv-icon.i4 { bottom: 8%; right: 4%; animation-delay: 1.8s; }

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.7; }
}

@keyframes rotate {
    from { transform: rotate(0); }
    to { transform: rotate(360deg); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ====================== Sections ====================== */
section {
    padding: 100px 0;
    position: relative;
}

.section-head {
    text-align: center;
    max-width: 740px;
    margin: 0 auto 70px;
}

.section-head .eyebrow {
    display: inline-block;
    color: var(--accent);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    margin-bottom: 14px;
}

.section-head h2 {
    font-size: clamp(30px, 4vw, 46px);
    color: var(--text-0);
    line-height: 1.15;
    margin-bottom: 18px;
    letter-spacing: -0.6px;
    font-weight: 700;
}

.section-head h2 .accent {
    background: linear-gradient(135deg, var(--accent) 0%, var(--green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-head p {
    font-size: 17px;
    color: var(--text-2);
}

/* ====================== About / Core Business ====================== */
.about {
    background: var(--bg-1);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    align-items: center;
}

.about-text h2 {
    font-size: clamp(30px, 4vw, 44px);
    color: var(--text-0);
    line-height: 1.15;
    margin-bottom: 22px;
    font-weight: 700;
    letter-spacing: -0.6px;
}

.about-text .accent-text {
    background: linear-gradient(135deg, var(--accent) 0%, var(--green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-text p {
    font-size: 16px;
    color: var(--text-1);
    margin-bottom: 16px;
}

.about-text strong {
    color: var(--text-0);
    font-weight: 600;
}

.about-points {
    margin-top: 28px;
    display: grid;
    gap: 14px;
}

.about-points li {
    list-style: none;
    padding: 14px 18px;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 15px;
    color: var(--text-1);
}

.about-points li .check {
    color: var(--green);
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 1px;
}

.about-visual {
    position: relative;
    aspect-ratio: 1 / 1;
    border-radius: 22px;
    background: linear-gradient(135deg, var(--bg-2) 0%, var(--bg-3) 100%);
    border: 1px solid var(--border);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-visual::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 70% 30%, rgba(34, 211, 238, 0.18) 0%, transparent 60%),
        radial-gradient(circle at 30% 70%, rgba(52, 211, 153, 0.12) 0%, transparent 50%);
    z-index: 1;
}

.about-visual img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.about-visual svg {
    position: relative;
    z-index: 1;
    width: 78%;
    height: auto;
}

/* ====================== Products ====================== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}

.product-card {
    background: linear-gradient(180deg, var(--bg-2) 0%, var(--bg-1) 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0;
    overflow: hidden;
    transition: transform .3s, border-color .3s, box-shadow .3s;
    position: relative;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: opacity .3s;
    z-index: 2;
}

.product-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: 0 18px 50px -12px rgba(34, 211, 238, 0.25);
}

.product-card:hover::before { opacity: 1; }

.product-card .product-image {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    position: relative;
    background: var(--bg-3);
}

.product-card .product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
    display: block;
}

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

.product-card .product-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(10, 14, 26, 0.6) 100%);
    pointer-events: none;
}

.product-card .product-body {
    padding: 26px 26px 30px;
}

.product-icon {
    width: 56px; height: 56px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.15) 0%, rgba(6, 182, 212, 0.05) 100%);
    border: 1px solid rgba(34, 211, 238, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    margin-bottom: 20px;
}

.product-card h3 {
    font-size: 22px;
    color: var(--text-0);
    margin-bottom: 12px;
    font-weight: 600;
}

.product-card p {
    color: var(--text-2);
    font-size: 15px;
    margin-bottom: 18px;
}

.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 22px;
}

.product-tag {
    font-size: 11px;
    padding: 4px 10px;
    background: rgba(34, 211, 238, 0.08);
    border: 1px solid rgba(34, 211, 238, 0.2);
    color: var(--accent);
    border-radius: 999px;
    font-weight: 500;
}

.product-link {
    color: var(--accent);
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap .2s;
}

.product-link:hover { gap: 10px; }

/* ====================== Advantages ====================== */
.advantages {
    background: var(--bg-1);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.adv-card {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    display: flex;
    gap: 22px;
    transition: transform .25s, border-color .25s;
}

.adv-card:hover {
    transform: translateY(-4px);
    border-color: rgba(34, 211, 238, 0.4);
}

.adv-icon {
    width: 52px; height: 52px;
    flex-shrink: 0;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.15), rgba(52, 211, 153, 0.08));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}

.adv-card h3 {
    color: var(--text-0);
    font-size: 19px;
    margin-bottom: 10px;
    font-weight: 600;
}

.adv-card p {
    color: var(--text-2);
    font-size: 14.5px;
}

/* ====================== Partnerships ====================== */
.partners-band {
    background: linear-gradient(135deg, var(--bg-2) 0%, var(--bg-1) 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 56px 50px;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 50px;
    align-items: center;
}

.partners-band h3 {
    font-size: 28px;
    color: var(--text-0);
    margin-bottom: 16px;
    font-weight: 600;
    line-height: 1.3;
}

.partners-band p {
    color: var(--text-2);
    font-size: 16px;
    margin-bottom: 14px;
}

.partner-flags {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.partner-flag {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    background: var(--bg-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.partner-flag .dot {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent) 0%, var(--green) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-0);
    font-weight: 700;
    font-size: 15px;
    flex-shrink: 0;
}

.partner-flag .pf-text strong {
    display: block;
    color: var(--text-0);
    font-weight: 600;
    font-size: 14px;
    line-height: 1.4;
    white-space: nowrap;
}

.partner-flag .pf-text span {
    color: var(--text-3);
    font-size: 12px;
}

/* ====================== CTA Banner ====================== */
.cta-banner {
    margin: 80px auto 0;
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.18) 0%, rgba(6, 182, 212, 0.05) 100%);
    border: 1px solid rgba(34, 211, 238, 0.3);
    border-radius: 22px;
    padding: 60px 50px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(34, 211, 238, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(34, 211, 238, 0.06) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.cta-banner > * { position: relative; }

.cta-banner h2 {
    font-size: clamp(28px, 4vw, 42px);
    color: var(--text-0);
    margin-bottom: 16px;
    font-weight: 700;
    letter-spacing: -0.6px;
}

.cta-banner p {
    color: var(--text-1);
    font-size: 17px;
    max-width: 640px;
    margin: 0 auto 30px;
}

/* ====================== Contact / Footer ====================== */
.contact-section {
    background: var(--bg-1);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    color: var(--text-0);
    font-size: 26px;
    margin-bottom: 18px;
    font-weight: 600;
}

.contact-info p {
    color: var(--text-2);
    margin-bottom: 30px;
    font-size: 15.5px;
}

.contact-list {
    list-style: none;
    display: grid;
    gap: 18px;
}

.contact-list li {
    display: flex;
    gap: 16px;
    padding: 18px 22px;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.contact-list .ci-icon {
    width: 42px; height: 42px;
    flex-shrink: 0;
    border-radius: 10px;
    background: rgba(34, 211, 238, 0.12);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-list .ci-text small {
    display: block;
    font-size: 12px;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    margin-bottom: 4px;
}

.contact-list .ci-text strong,
.contact-list .ci-text a {
    color: var(--text-0);
    font-size: 15.5px;
    font-weight: 600;
    word-break: break-word;
}

.contact-list .ci-text a:hover { color: var(--accent); }

.contact-card {
    background: linear-gradient(180deg, var(--bg-2) 0%, var(--bg-1) 100%);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    padding: 40px;
}

.contact-card h3 {
    color: var(--text-0);
    font-size: 22px;
    margin-bottom: 24px;
    font-weight: 600;
}

.form-row {
    margin-bottom: 18px;
}

.form-row label {
    display: block;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-2);
    margin-bottom: 8px;
    font-weight: 600;
}

.form-row input,
.form-row textarea,
.form-row select {
    width: 100%;
    background: var(--bg-3);
    border: 1px solid var(--border-strong);
    color: var(--text-0);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 14.5px;
    transition: border-color .2s, box-shadow .2s;
}

.form-row input:focus,
.form-row textarea:focus,
.form-row select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.18);
}

.form-row textarea { min-height: 110px; resize: vertical; }

.contact-card .btn-primary {
    width: 100%;
    justify-content: center;
    border: 0;
    cursor: pointer;
    font-family: inherit;
}

.form-status {
    margin-top: 14px;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 14px;
    display: none;
}

.form-status.show { display: block; }
.form-status.ok {
    background: rgba(52, 211, 153, 0.12);
    color: var(--green);
    border: 1px solid rgba(52, 211, 153, 0.3);
}

.site-footer {
    background: var(--bg-0);
    border-top: 1px solid var(--border);
    padding: 50px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-col h4 {
    color: var(--text-0);
    font-size: 14px;
    margin-bottom: 18px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.3px;
}

.footer-col p,
.footer-col li {
    color: var(--text-2);
    font-size: 14px;
    line-height: 1.9;
}

.footer-col ul {
    list-style: none;
}

.footer-col a {
    color: var(--text-2);
    transition: color .2s;
}

.footer-col a:hover { color: var(--accent); }

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 26px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    color: var(--text-3);
    font-size: 13px;
}

/* ====================== Floating WhatsApp ====================== */
.wa-fab {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 58px; height: 58px;
    border-radius: 50%;
    background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.45);
    z-index: 90;
    transition: transform .25s;
}

.wa-fab:hover {
    transform: scale(1.08);
    color: #ffffff;
}

.wa-fab::before {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 2px solid #25d366;
    opacity: 0.6;
    animation: ring 2.4s ease-out infinite;
}

@keyframes ring {
    0% { transform: scale(0.95); opacity: 0.6; }
    100% { transform: scale(1.4); opacity: 0; }
}

/* ====================== Gallery ====================== */
.gallery-band {
    background: var(--bg-1);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 14px;
    margin-top: 50px;
}

.gallery-item {
    position: relative;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg-3);
    transition: transform .25s, border-color .25s;
}

.gallery-item:hover {
    transform: scale(1.04);
    border-color: var(--accent);
    z-index: 2;
    box-shadow: 0 10px 30px rgba(34, 211, 238, 0.25);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}

.gallery-item:hover img {
    transform: scale(1.08);
}

.gallery-item .gi-cap {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    padding: 10px 12px;
    background: linear-gradient(180deg, transparent, rgba(10, 14, 26, 0.92));
    color: var(--text-0);
    font-size: 12px;
    font-weight: 600;
    transform: translateY(100%);
    transition: transform .25s;
}

.gallery-item:hover .gi-cap {
    transform: none;
}

/* ====================== Reveal Anim ====================== */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .8s ease, transform .8s ease;
}

.reveal.in {
    opacity: 1;
    transform: none;
}

/* ====================== Responsive ====================== */
@media (max-width: 1080px) {
    .hero-inner { grid-template-columns: 1fr; gap: 30px; }
    .hero-visual { height: 380px; }
    .hv-disc, .hv-disc.d2, .hv-disc.d3 { display: none; }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .advantages-grid { grid-template-columns: 1fr; }
    .partners-band { grid-template-columns: 1fr; padding: 40px 30px; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .gallery-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 720px) {
    section { padding: 70px 0; }
    .nav-main { display: none; }
    .nav-main.open {
        display: flex;
        position: absolute;
        top: 100%; left: 0; right: 0;
        flex-direction: column;
        background: var(--bg-1);
        padding: 16px;
        border-bottom: 1px solid var(--border);
        gap: 4px;
    }
    .nav-main.open a {
        width: 100%;
        padding: 12px 16px;
    }
    .menu-toggle { display: inline-flex; }
    .lang-switch { display: none; }
    .hero { padding-top: calc(var(--header-h) + 40px); min-height: auto; }
    .hero-stats { gap: 24px; }
    .hero-stat .num { font-size: 26px; }
    .products-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .footer-bottom { flex-direction: column; }
    .cta-banner { padding: 40px 26px; }
    .contact-card { padding: 28px; }
    .container { padding: 0 18px; }
}


/* ===== Partner brand logo grid (MOLICEL/LISHEN/EVE/TENPOWER/SAMSUNG/BYD) ===== */
.partner-logos {
    margin-top: 36px;
    padding-top: 32px;
    border-top: 1px dashed var(--border);
    grid-column: 1 / -1;
}
.partner-logos-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: var(--text-2);
    margin-bottom: 22px;
    text-align: center;
}
.partner-logos-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
    align-items: center;
    justify-items: center;
}
.partner-logos-grid a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 70px;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fff;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.partner-logos-grid a:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0,0,0,0.08);
    border-color: var(--accent);
}
.partner-logos-grid img {
    max-width: 100%;
    max-height: 44px;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
    filter: grayscale(0%);
    opacity: 0.92;
    transition: opacity .2s ease;
}
.partner-logos-grid a:hover img { opacity: 1; }
@media (max-width: 1080px) {
    .partner-logos-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 720px) {
    .partner-logos-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .partner-logos-grid a { height: 60px; padding: 8px 10px; }
    .partner-logos-grid img { max-height: 36px; }
}