/* ===== CSS Variables & Reset - 若木晶格品牌色系 ===== */
:root {
    --bg-primary: #070710;
    --bg-secondary: #0c0c1a;
    --bg-card: #111126;
    --bg-card-hover: #181835;
    --text-primary: #e4e4f0;
    --text-secondary: #9090b8;
    --text-muted: #5a5a88;

    /* 品牌主色：橙色系（提取自Logo） */
    --accent-orange: #E87A5D;
    --accent-warm: #D46A45;
    --accent-gold: #F0A070;
    --accent-coral: #F06B40;
    --accent-amber: #F5B585;
    --accent-deep-orange: #C85D38;

    /* 辅助渐变 */
    --gradient-primary: linear-gradient(135deg, #E87A5D 0%, #D46A45 50%, #C85D38 100%);
    --gradient-warm: linear-gradient(135deg, #F0A070, #E87A5D, #D46A45);
    --gradient-card: linear-gradient(145deg, rgba(232,122,93,0.07), rgba(200,93,56,0.05));
    --border-subtle: rgba(255,255,255,0.05);
    --border-glow: rgba(232,122,93,0.35);
    --shadow-glow: 0 0 60px rgba(232,122,93,0.10);
    --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ===== 晶格网格背景 ===== */
.lattice-bg {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: 0; pointer-events: none;
    background-image:
        linear-gradient(rgba(232,122,93,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(232,122,93,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 1000; padding: 18px 0;
    transition: var(--transition);
}
.navbar.scrolled {
    background: rgba(7,7,16,0.92);
    backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 10px 0;
}
.nav-container {
    max-width: 1280px; margin: 0 auto; padding: 0 32px;
    display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 700; letter-spacing: -0.5px; }
.logo-icon { width: 36px; height: 36px; color: var(--accent-orange); flex-shrink: 0; }
.logo-text { font-size: 20px; font-weight: 700; }
.logo-highlight {
    background: var(--gradient-primary); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text; font-weight: 800;
}
.nav-menu { display: flex; gap: 4px; }
.nav-link {
    padding: 8px 18px; border-radius: 20px; font-size: 14px; font-weight: 500;
    color: var(--text-secondary); transition: var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--text-primary); background: rgba(255,255,255,0.05); }
.nav-actions .btn-contact {
    display: inline-block; padding: 10px 24px; border-radius: 24px; border: 1px solid var(--border-glow);
    background: transparent; color: var(--accent-orange); font-size: 14px; font-weight: 600;
    cursor: pointer; transition: var(--transition); text-decoration: none;
}
.nav-actions .btn-contact:hover { background: rgba(232,122,93,0.12); box-shadow: 0 0 24px rgba(232,122,93,0.25); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.hamburger span { width: 24px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: var(--transition); }

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden; padding: 120px 32px 80px;
}
#particleCanvas {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    z-index: 0; pointer-events: none;
}
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 800px; }
.hero-badge {
    display: inline-block; padding: 6px 22px; border-radius: 24px;
    background: rgba(232,122,93,0.10); border: 1px solid rgba(232,122,93,0.25);
    color: var(--accent-orange); font-size: 13px; font-weight: 600; margin-bottom: 32px; letter-spacing: 2px;
}
.hero-title { font-size: clamp(42px,7vw,76px); font-weight: 900; line-height: 1.08; letter-spacing: -2.5px; margin-bottom: 28px; }
.gradient-text {
    background: var(--gradient-primary); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-subtitle { font-size: clamp(18px,3vw,28px); font-weight: 300; color: var(--text-secondary); letter-spacing: 1px; }
.hero-desc { font-size: 17px; color: var(--text-secondary); max-width: 580px; margin: 0 auto 40px; line-height: 1.8; }
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn-primary, .btn-outline {
    padding: 15px 40px; border-radius: 30px; font-size: 15px; font-weight: 600;
    transition: var(--transition); cursor: pointer; display: inline-block;
}
.btn-primary { background: var(--gradient-primary); color: #fff; border: none; box-shadow: 0 6px 28px rgba(232,122,93,0.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 36px rgba(232,122,93,0.48); }
.btn-outline { border: 1px solid rgba(255,255,255,0.16); color: var(--text-primary); background: transparent; }
.btn-outline:hover { border-color: var(--accent-orange); background: rgba(232,122,93,0.06); }

/* Hero Visual */
.hero-visual {
    position: absolute; top: 50%; right: 8%; transform: translateY(-50%);
    z-index: 1; width: 520px; height: 520px; pointer-events: none;
}
.hero-lattice { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 260px; height: 260px; }
.lattice-grid {
    width: 100%; height: 100%;
    background-image: radial-gradient(circle, rgba(232,122,93,0.6) 1.5px, transparent 1.5px);
    background-size: 32px 32px; animation: latticePulse 4s ease-in-out infinite;
}
@keyframes latticePulse {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.06); }
}
.lattice-center {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%) rotate(45deg);
    width: 80px; height: 80px; border: 2px solid var(--accent-orange); border-radius: 4px;
    animation: diamondSpin 12s linear infinite;
    box-shadow: 0 0 40px rgba(232,122,93,0.3), inset 0 0 20px rgba(232,122,93,0.1);
}
@keyframes diamondSpin { from { transform: translate(-50%,-50%) rotate(45deg); } to { transform: translate(-50%,-50%) rotate(405deg); } }

.hero-ring {
    position: absolute; top: 50%; left: 50%; border-radius: 50%;
    border: 1px solid rgba(232,122,93,0.12); transform: translate(-50%,-50%);
    animation: ringRotate 20s linear infinite;
}
.hero-ring.ring-1 { width: 340px; height: 340px; border-color: rgba(232,122,93,0.09); }
.hero-ring.ring-2 { width: 450px; height: 450px; border-color: rgba(212,106,69,0.06); animation-duration: 28s; animation-direction: reverse; }
.hero-ring.ring-3 { width: 560px; height: 560px; border-color: rgba(240,160,112,0.04); animation-duration: 36s; }
@keyframes ringRotate { from { transform: translate(-50%,-50%) rotate(0deg); } to { transform: translate(-50%,-50%) rotate(360deg); } }

.hero-glow {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
    width: 400px; height: 400px; border-radius: 50%;
    background: radial-gradient(circle, rgba(232,122,93,0.07) 0%, transparent 70%);
    filter: blur(50px);
}

.scroll-indicator { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; z-index: 2; }
.scroll-indicator span { font-size: 11px; color: var(--text-muted); letter-spacing: 2px; text-transform: uppercase; }
.scroll-arrow { width: 18px; height: 18px; border-right: 2px solid var(--text-muted); border-bottom: 2px solid var(--text-muted); transform: rotate(45deg); animation: scrollBounce 2.5s ease infinite; }
@keyframes scrollBounce { 0%, 100% { transform: rotate(45deg) translate(0,0); } 50% { transform: rotate(45deg) translate(0,6px); } }

/* ===== Section Styles ===== */
section { padding: 100px 32px; position: relative; z-index: 1; }
.section-header { text-align: center; margin-bottom: 72px; }
.section-tag { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 4px; color: var(--accent-orange); margin-bottom: 16px; text-transform: uppercase; }
.section-title { font-size: clamp(32px,5vw,48px); font-weight: 800; letter-spacing: -1.5px; margin-bottom: 16px; background: linear-gradient(180deg,#fff 0%,#9090b8 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.section-desc { color: var(--text-secondary); font-size: 17px; max-width: 560px; margin: 0 auto; }

/* ===== Brand Story ===== */
.brand { background: var(--bg-secondary); }
.brand-content { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.brand-card { padding: 40px 32px; background: var(--bg-card); border-radius: var(--radius-lg); border: 1px solid var(--border-subtle); transition: var(--transition); }
.brand-card:hover { border-color: var(--border-glow); transform: translateY(-3px); box-shadow: var(--shadow-glow); }
.brand-card-icon { width: 56px; height: 56px; color: var(--accent-orange); margin-bottom: 20px; }
.brand-card h3 { font-size: 24px; font-weight: 700; margin-bottom: 12px; letter-spacing: -0.5px; }
.brand-tags { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.brand-tags span { padding: 4px 14px; border-radius: 14px; font-size: 12px; font-weight: 600; background: rgba(232,122,93,0.10); color: var(--accent-orange); border: 1px solid rgba(232,122,93,0.2); }
.brand-card p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; }
.brand-card p strong { color: var(--accent-gold); font-weight: 600; }
.lattice-icon svg { width: 56px; height: 56px; }
.brand-brand-meaning { grid-column: 1 / -1; padding: 48px; text-align: center; background: linear-gradient(145deg, rgba(232,122,93,0.06), rgba(200,93,56,0.04)); border: 1px solid rgba(232,122,93,0.15); }
.meaning-diamond { margin-bottom: 24px; }
.meaning-diamond svg { width: 64px; height: 64px; animation: diamondSpin 8s linear infinite; }
.brand-brand-meaning h3 { font-size: 28px; margin-bottom: 12px; background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.meaning-desc { font-size: 17px !important; max-width: 640px; margin: 0 auto 24px !important; }
.meaning-keywords { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.kw { padding: 8px 20px; border-radius: 20px; font-size: 13px; font-weight: 600; background: rgba(232,122,93,0.08); color: var(--accent-gold); border: 1px solid rgba(232,122,93,0.18); transition: var(--transition); }
.kw:hover { background: rgba(232,122,93,0.16); border-color: var(--accent-orange); color: var(--accent-orange); }

/* ===== Products ===== */
.products { background: var(--bg-primary); }
.product-detail { max-width: 1200px; margin: 0 auto; }
.product-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.product-detail-grid.reverse { direction: rtl; }
.product-detail-grid.reverse > * { direction: ltr; }
.product-series { font-size: 12px; font-weight: 700; letter-spacing: 3px; color: var(--accent-orange); text-transform: uppercase; margin-bottom: 12px; display: block; }
.product-name { font-size: 34px; font-weight: 800; letter-spacing: -1px; margin-bottom: 8px; line-height: 1.2; }
.product-model { color: var(--accent-orange); font-weight: 700; }
.product-tagline { color: var(--text-secondary); font-size: 15px; margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--border-subtle); }

/* Unlock Methods */
.unlock-methods { display: flex; gap: 12px; margin-bottom: 28px; flex-wrap: wrap; }
.method { display: flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 20px; background: var(--gradient-card); border: 1px solid var(--border-subtle); font-size: 12px; color: var(--text-secondary); transition: var(--transition); }
.method:hover { border-color: var(--border-glow); }
.method-icon { font-size: 16px; }

.feature-list { display: flex; flex-direction: column; gap: 14px; margin-bottom: 28px; }
.feature-item { display: flex; gap: 14px; align-items: flex-start; padding: 16px; border-radius: var(--radius-md); background: var(--gradient-card); border: 1px solid var(--border-subtle); transition: var(--transition); }
.feature-item:hover { border-color: var(--border-glow); background: linear-gradient(145deg, rgba(232,122,93,0.10), rgba(200,93,56,0.07)); }
.feature-icon { font-size: 24px; flex-shrink: 0; width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; background: rgba(232,122,93,0.12); border-radius: 12px; }
.feature-text h4 { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.feature-text p { font-size: 13px; color: var(--text-secondary); line-height: 1.65; }

.product-specs { display: flex; flex-direction: column; gap: 8px; padding: 20px; background: rgba(255,255,255,0.02); border-radius: var(--radius-md); border: 1px solid var(--border-subtle); }
.spec { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; font-size: 13px; padding: 6px 0; }
.spec-label { color: var(--text-muted); font-weight: 600; white-space: nowrap; min-width: 90px; }
.spec-value { color: var(--text-primary); font-weight: 400; text-align: right; }

/* 产品操作按钮 */
.product-actions { margin-top: 24px; }
.btn-download {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 32px; border-radius: 28px;
    background: var(--gradient-primary); color: #fff;
    font-size: 15px; font-weight: 600; text-decoration: none;
    box-shadow: 0 6px 28px rgba(232,122,93,0.35);
    transition: var(--transition); cursor: pointer;
}
.btn-download:hover { transform: translateY(-2px); box-shadow: 0 10px 36px rgba(232,122,93,0.48); }

/* ===== 3D Product Cards ===== */
.product-visual { display: flex; justify-content: center; align-items: center; perspective: 1200px; }
.product-card-3d { position: relative; width: 280px; height: 420px; transform-style: preserve-3d; animation: float3D 7s ease-in-out infinite; }

/* 鼠标真实图片容器 */
.mouse-image-container {
    position: relative;
    width: 420px;
    height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    transform-style: preserve-3d;
    animation: float3D 7s ease-in-out infinite;
}
.mouse-product-img {
    width: 100%;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 20px 50px rgba(0,0,0,0.5));
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 16px;
}
.mouse-glow-effect {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 280px; height: 200px;
    background: radial-gradient(ellipse, rgba(232,122,93,0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}
@keyframes float3D {
    0%, 100% { transform: rotateY(-6deg) rotateX(4deg) translateY(0); }
    50% { transform: rotateY(6deg) rotateX(-4deg) translateY(-12px); }
}

/* 门锁真实图片容器 */
.lock-image-container {
    position: relative;
    width: 460px;
    height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    transform-style: preserve-3d;
    animation: float3D 7s ease-in-out infinite;
}
.lock-product-img {
    width: 100%;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 20px 50px rgba(0,0,0,0.5));
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 16px;
}
.lock-glow-effect {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 320px; height: 420px;
    background: radial-gradient(ellipse, rgba(232,122,93,0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

/* 鼠标图片悬浮波纹 */
.mouse-image-container .mouse-waves {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: -1;
}
.mouse-image-container .mouse-waves .wave {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(232,122,93,0.18);
    animation: waveExpand 3s ease-out infinite;
    top: -30px; left: -30px;
    width: 60px; height: 60px;
}
.mouse-image-container .mouse-chip-badge {
    position: absolute;
    bottom: -28px; left: 50%; transform: translateX(-50%);
    white-space: nowrap; padding: 6px 16px; border-radius: 16px;
    background: rgba(232,122,93,0.12); border: 1px solid rgba(232,122,93,0.3);
    font-size: 11px; font-weight: 700; color: var(--accent-orange);
    letter-spacing: 1px; z-index: 2;
}

/* Lock 3D */
.lock-3d .lock-body {
    width: 190px; height: 370px; margin: 25px auto;
    background: linear-gradient(145deg, #181835, #111128);
    border-radius: 26px; border: 1.5px solid rgba(232,122,93,0.18);
    box-shadow: 0 24px 60px rgba(0,0,0,0.45), 0 0 40px rgba(232,122,93,0.06);
    position: relative; overflow: visible;
}
.lock-body::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(180deg, rgba(232,122,93,0.04) 0%, transparent 50%);
    border-radius: 26px; pointer-events: none;
}
.lock-panel { padding: 22px 16px; }
.lock-screen { width: 72px; height: 72px; margin: 0 auto 16px; background: radial-gradient(circle, rgba(0,0,0,0.7), #000); border-radius: 50%; border: 2px solid rgba(232,122,93,0.28); display: flex; align-items: center; justify-content: center; box-shadow: inset 0 0 24px rgba(232,122,93,0.06); }
.lock-status { font-size: 28px; animation: lockPulse 2.5s ease-in-out infinite; }
@keyframes lockPulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.45; } }
.lock-keypad { display: flex; flex-direction: column; gap: 6px; }
.key-row { display: flex; gap: 6px; justify-content: center; }
.key-row span { width: 33px; height: 33px; display: flex; align-items: center; justify-content: center; border-radius: 9px; font-size: 12px; color: var(--text-muted); background: rgba(255,255,255,0.025); border: 1px solid rgba(255,255,255,0.04); transition: var(--transition); }
.key-row span:hover { border-color: var(--accent-orange); color: var(--accent-orange); box-shadow: 0 0 12px rgba(232,122,93,0.18); }

.lock-handle-section { position: absolute; bottom: 55px; left: 50%; transform: translateX(-50%); }
.lock-handle-bar { width: 140px; height: 14px; background: linear-gradient(180deg, #222240, #16162e); border-radius: 7px; border: 1px solid rgba(232,122,93,0.12); position: relative; left: 50%; transform: translateX(-50%); }
.lock-fingerprint-sensor { width: 36px; height: 36px; border-radius: 50%; background: radial-gradient(circle, rgba(232,122,93,0.2), transparent); border: 2px solid rgba(232,122,93,0.45); margin: 10px auto 0; display: flex; align-items: center; justify-content: center; }
.fp-glow { width: 16px; height: 16px; border-radius: 50%; background: var(--accent-orange); animation: lockPulse 2s ease-in-out infinite; }

.lock-labels { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; }
.lock-label { position: absolute; font-size: 9px; color: var(--accent-gold); opacity: 0.5; white-space: nowrap; font-weight: 600; }
.lock-label:nth-child(1){top:18%;left:-68px;}
.lock-label:nth-child(2){top:27%;left:-68px;}
.lock-label:nth-child(3){top:37%;left:-54px;}
.lock-label:nth-child(4){top:66%;left:-78px;}
.lock-label:nth-child(5){top:74%;left:-82px;}
.lock-label:nth-child(6){top:53%;right:-72px;}
.lock-label:nth-child(7){bottom:18%;right:-52px;}

/* Product Divider */
.product-divider { display: flex; align-items: center; gap: 24px; max-width: 560px; margin: 80px auto; }
.divider-line { flex: 1; height: 1px; background: linear-gradient(90deg, transparent, rgba(232,122,93,0.25), transparent); }
.divider-logo { width: 32px; height: 32px; color: var(--accent-orange); animation: diamondSpin 6s linear infinite; }

/* ===== About ===== */
.about { background: var(--bg-secondary); }
.about-content { max-width: 1100px; margin: 0 auto; }
.about-lead { font-size: 19px; line-height: 1.9; color: var(--text-secondary); text-align: center; max-width: 800px; margin: 0 auto 64px; }
.about-lead .highlight { color: var(--accent-orange); font-weight: 700; }
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; margin-bottom: 64px; }
.stat-card { text-align: center; padding: 36px 20px; background: var(--bg-card); border-radius: var(--radius-lg); border: 1px solid var(--border-subtle); transition: var(--transition); }
.stat-card:hover { border-color: var(--border-glow); box-shadow: var(--shadow-glow); transform: translateY(-3px); }
.stat-number { font-size: 38px; font-weight: 900; letter-spacing: -1px; background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 8px; }
.stat-label { font-size: 13px; color: var(--text-secondary); font-weight: 500; }
.about-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
.about-card { padding: 36px; background: var(--bg-card); border-radius: var(--radius-lg); border: 1px solid var(--border-subtle); transition: var(--transition); }
.about-card:hover { border-color: var(--border-glow); transform: translateY(-3px); box-shadow: var(--shadow-glow); }
.about-card-icon { font-size: 34px; margin-bottom: 16px; }
.about-card h4 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.about-card p { color: var(--text-secondary); font-size: 14px; line-height: 1.75; }

/* ===== Footer ===== */
.footer { background: var(--bg-primary); border-top: 1px solid var(--border-subtle); padding: 64px 32px 36px; position: relative; z-index: 1; }
.footer-content { max-width: 1100px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 0.7fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand p { color: var(--text-secondary); font-size: 14px; margin-top: 16px; line-height: 1.75; max-width: 300px; }
.footer-links h4 { font-size: 14px; font-weight: 700; margin-bottom: 20px; color: var(--text-primary); }
.footer-links a { display: block; font-size: 14px; color: var(--text-secondary); margin-bottom: 12px; transition: var(--transition); white-space: nowrap; }
.footer-links a:hover { color: var(--accent-orange); }
.footer-bottom { padding-top: 28px; border-top: 1px solid var(--border-subtle); text-align: center; }
.footer-bottom p { font-size: 13px; color: var(--text-muted); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .product-detail-grid { grid-template-columns: 1fr; gap: 48px; }
    .product-detail-grid.reverse { direction: ltr; }
    .stats-grid { grid-template-columns: repeat(2,1fr); }
    .brand-content { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero-visual { display: none; }
}

@media (max-width: 768px) {
    .nav-menu { display: none; }
    .nav-menu.active { display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: rgba(7,7,16,0.95); backdrop-filter: blur(20px); padding: 20px; gap: 4px; }
    .hamburger { display: flex; }
    .hero-title { font-size: 36px; }
    section { padding: 64px 20px; }
    .about-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2,1fr); gap: 12px; }
    .stat-number { font-size: 28px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .product-name { font-size: 26px; }
    .unlock-methods { gap: 8px; }
    .method { padding: 6px 12px; font-size: 11px; }
    .lock-labels { display: none; }
}

@media (max-width: 480px) {
    .hero-buttons { flex-direction: column; align-items: center; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .product-specs { padding: 14px; }
    .spec { flex-direction: column; gap: 2px; }
    .spec-label { min-width: auto; }
    .spec-value { text-align: left; }
}