/* Isometric City Network Style */
@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@500;600;700&family=Noto+Sans+SC:wght@400;700;900&display=swap');

:root {
    --iso-bg: #0f172a;
    --iso-grid: rgba(56, 189, 248, 0.1);
    --iso-primary: #38bdf8;
    --iso-secondary: #c084fc;
    --iso-accent: #f472b6;
    --iso-surface-top: #334155;
    --iso-surface-left: #1e293b;
    --iso-surface-right: #0f172a;
    --iso-text: #f8fafc;
    --iso-text-muted: #94a3b8;
    
    --font-head: 'Rajdhani', sans-serif;
    --font-body: 'Noto Sans SC', sans-serif;
}

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

body {
    background-color: var(--iso-bg);
    color: var(--iso-text);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Isometric Grid Background */
body::before {
    content: '';
    position: fixed;
    top: -50%; left: -50%; width: 200%; height: 200%;
    background-image: 
        linear-gradient(var(--iso-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--iso-grid) 1px, transparent 1px);
    background-size: 50px 50px;
    transform: rotateX(60deg) rotateZ(-45deg);
    z-index: -2;
    pointer-events: none;
}
/* Glowing Network Lines */
body::after {
    content: '';
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(circle at 50% 50%, transparent 20%, var(--iso-bg) 80%);
    z-index: -1;
    pointer-events: none;
}

h1, h2, h3, h4 {
    font-family: var(--font-head);
    letter-spacing: 1px;
    text-transform: uppercase;
}

a {
    text-decoration: none;
    color: inherit;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* Isometric Button */
.btn-iso {
    display: inline-block;
    padding: 12px 30px;
    font-family: var(--font-head);
    font-size: 18px;
    font-weight: 700;
    color: var(--iso-text);
    background: var(--iso-primary);
    position: relative;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
    /* 3D Button Effect */
    box-shadow: 
        -2px 2px 0 0 #0284c7,
        -4px 4px 0 0 #0284c7,
        -6px 6px 0 0 #0369a1,
        -6px 6px 10px rgba(0,0,0,0.5);
    transform: translate(0, 0);
}
.btn-iso:hover {
    transform: translate(-2px, 2px);
    box-shadow: 
        -2px 2px 0 0 #0284c7,
        -4px 4px 0 0 #0369a1,
        -4px 4px 10px rgba(0,0,0,0.5);
}
.btn-iso:active {
    transform: translate(-6px, 6px);
    box-shadow: none;
}
.btn-iso.secondary {
    background: var(--iso-secondary);
    box-shadow: 
        -2px 2px 0 0 #9333ea,
        -4px 4px 0 0 #9333ea,
        -6px 6px 0 0 #7e22ce,
        -6px 6px 10px rgba(0,0,0,0.5);
}
.btn-iso.secondary:hover {
    box-shadow: 
        -2px 2px 0 0 #9333ea,
        -4px 4px 0 0 #7e22ce,
        -4px 4px 10px rgba(0,0,0,0.5);
}

/* Navigation - Floating Platform */
.iso-nav {
    position: fixed;
    top: 30px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1100px;
    z-index: 1000;
}
.nav-platform {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    padding: 15px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--iso-primary);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5), inset 0 0 20px rgba(56, 189, 248, 0.2);
    position: relative;
}
.nav-platform::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 2px;
    background: linear-gradient(90deg, transparent, var(--iso-primary), transparent);
}
.nav-brand {
    font-size: 28px;
    font-weight: 700;
    color: var(--iso-primary);
    text-shadow: 0 0 10px rgba(56, 189, 248, 0.5);
}
.nav-links {
    display: flex;
    gap: 30px;
}
.nav-links a {
    font-family: var(--font-head);
    font-size: 18px;
    font-weight: 600;
    transition: color 0.3s;
    position: relative;
}
.nav-links a:hover, .nav-links a.active {
    color: var(--iso-primary);
}
.nav-tools {
    display: flex;
    align-items: center;
    gap: 20px;
}
.lang-box {
    border: 1px solid var(--iso-secondary);
    padding: 5px 10px;
    font-family: var(--font-head);
    color: var(--iso-secondary);
}

/* Hero Section */
.iso-hero {
    padding: 180px 0 100px;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}
.hero-title {
    font-size: 64px;
    line-height: 1.1;
    margin-bottom: 20px;
    color: var(--iso-text);
}
.hero-title span {
    color: var(--iso-primary);
    text-shadow: 0 0 15px rgba(56, 189, 248, 0.6);
}
.hero-desc {
    font-size: 20px;
    color: var(--iso-text-muted);
    margin-bottom: 40px;
}
.hero-actions {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}
.trust-iso {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}
.trust-iso span {
    font-family: var(--font-head);
    font-size: 14px;
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--iso-grid);
    padding: 5px 15px;
    color: var(--iso-primary);
}
.hero-visual {
    position: relative;
    perspective: 1000px;
}
.hero-visual img {
    transform: rotateX(20deg) rotateY(-20deg);
    box-shadow: -20px 20px 40px rgba(0,0,0,0.5);
    border: 2px solid var(--iso-primary);
    animation: float-iso 6s ease-in-out infinite;
}
@keyframes float-iso {
    0% { transform: rotateX(20deg) rotateY(-20deg) translateY(0); }
    50% { transform: rotateX(20deg) rotateY(-20deg) translateY(-20px); }
    100% { transform: rotateX(20deg) rotateY(-20deg) translateY(0); }
}

/* Metrics - Isometric Buildings */
.iso-metrics {
    padding: 50px 0;
}
.metrics-city {
    display: flex;
    justify-content: center;
    gap: 60px;
    padding: 40px 0;
}
.building {
    position: relative;
    width: 120px;
    height: 120px;
    transform-style: preserve-3d;
    transform: rotateX(60deg) rotateZ(-45deg);
    transition: transform 0.3s;
}
.building:hover {
    transform: rotateX(60deg) rotateZ(-45deg) translateZ(20px);
}
.b-top, .b-left, .b-right {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    text-align: center;
}
.b-top {
    width: 120px; height: 120px;
    background: var(--iso-surface-top);
    border: 1px solid var(--iso-primary);
    transform: translateZ(60px);
}
.b-left {
    width: 120px; height: 60px;
    background: var(--iso-surface-left);
    border: 1px solid var(--iso-primary);
    transform: rotateX(-90deg) translateZ(60px);
    transform-origin: bottom;
    bottom: 0;
}
.b-right {
    width: 60px; height: 120px;
    background: var(--iso-surface-right);
    border: 1px solid var(--iso-primary);
    transform: rotateY(90deg) translateZ(60px);
    transform-origin: right;
    right: 0;
}
.b-top .m-val {
    font-family: var(--font-head);
    font-size: 28px;
    color: var(--iso-primary);
    transform: rotateZ(45deg); /* Counter-rotate text */
}
.b-top .m-lbl {
    font-size: 12px;
    color: var(--iso-text);
    transform: rotateZ(45deg);
}
.building:nth-child(2) .b-top { border-color: var(--iso-secondary); }
.building:nth-child(2) .b-left { border-color: var(--iso-secondary); }
.building:nth-child(2) .b-right { border-color: var(--iso-secondary); }
.building:nth-child(2) .b-top .m-val { color: var(--iso-secondary); }

.building:nth-child(3) .b-top { border-color: var(--iso-accent); }
.building:nth-child(3) .b-left { border-color: var(--iso-accent); }
.building:nth-child(3) .b-right { border-color: var(--iso-accent); }
.building:nth-child(3) .b-top .m-val { color: var(--iso-accent); }

/* Features - Floating Isometric Cards */
.iso-features {
    padding: 100px 0;
}
.sec-title {
    text-align: center;
    font-size: 48px;
    margin-bottom: 80px;
    color: var(--iso-text);
}
.sec-title span { color: var(--iso-primary); }
.feat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}
.iso-card {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--iso-grid);
    padding: 40px 30px;
    position: relative;
    transition: all 0.3s;
    backdrop-filter: blur(5px);
}
.iso-card::before {
    content: '';
    position: absolute;
    top: -5px; left: -5px;
    width: 20px; height: 20px;
    border-top: 2px solid var(--iso-primary);
    border-left: 2px solid var(--iso-primary);
}
.iso-card::after {
    content: '';
    position: absolute;
    bottom: -5px; right: -5px;
    width: 20px; height: 20px;
    border-bottom: 2px solid var(--iso-primary);
    border-right: 2px solid var(--iso-primary);
}
.iso-card:hover {
    transform: translateY(-10px);
    background: rgba(30, 41, 59, 0.9);
    border-color: var(--iso-primary);
    box-shadow: 0 10px 30px rgba(56, 189, 248, 0.1);
}
.f-icon {
    font-size: 48px;
    margin-bottom: 20px;
    color: var(--iso-primary);
}
.iso-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--iso-text);
}
.iso-card p {
    font-size: 15px;
    color: var(--iso-text-muted);
    margin-bottom: 20px;
}
.f-list {
    list-style: none;
}
.f-list li {
    font-size: 14px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    display: flex;
    align-items: center;
    gap: 10px;
}
.f-list li::before {
    content: '■';
    color: var(--iso-secondary);
    font-size: 10px;
}

/* Nodes - Network Map */
.iso-nodes {
    padding: 100px 0;
}
.network-map {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--iso-grid);
    padding: 60px;
    position: relative;
}
.network-map::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: 
        linear-gradient(90deg, transparent 49%, var(--iso-primary) 50%, transparent 51%),
        linear-gradient(0deg, transparent 49%, var(--iso-primary) 50%, transparent 51%);
    background-size: 100px 100px;
    opacity: 0.1;
    pointer-events: none;
}
.nodes-header {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    z-index: 1;
}
.node-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    position: relative;
    z-index: 1;
}
.node-box {
    background: var(--iso-surface-top);
    border: 1px solid var(--iso-primary);
    padding: 15px 25px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 
        -2px 2px 0 0 #0284c7,
        -4px 4px 0 0 #0369a1;
    transition: transform 0.2s;
}
.node-box:hover {
    transform: translate(-2px, 2px);
    box-shadow: -2px 2px 0 0 #0284c7;
    background: var(--iso-primary);
    color: var(--iso-bg);
}
.n-name { font-family: var(--font-head); font-size: 20px; font-weight: 700; }
.n-speed { font-size: 14px; font-weight: 700; }
.node-box:hover .n-speed { color: var(--iso-bg); }

/* Reviews - Data Blocks */
.iso-reviews {
    padding: 100px 0;
}
.review-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}
.data-block {
    background: var(--iso-surface-left);
    padding: 30px;
    border-left: 4px solid var(--iso-secondary);
    position: relative;
}
.data-block::before {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 30px; height: 30px;
    background: linear-gradient(225deg, var(--iso-bg) 50%, var(--iso-secondary) 50%);
}
.r-stars { color: var(--iso-accent); font-size: 20px; margin-bottom: 15px; letter-spacing: 2px; }
.r-text { font-size: 16px; color: var(--iso-text-muted); margin-bottom: 25px; }
.r-user { display: flex; align-items: center; gap: 15px; }
.r-avatar {
    width: 40px; height: 40px;
    background: var(--iso-secondary);
    color: var(--iso-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-head);
    font-size: 20px;
    font-weight: 700;
}
.r-info h4 { font-size: 16px; color: var(--iso-text); }

/* Pricing - Skyscrapers */
.iso-pricing {
    padding: 100px 0;
}
.price-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    align-items: end;
}
.skyscraper {
    background: var(--iso-surface-top);
    border: 1px solid var(--iso-grid);
    padding: 40px 30px;
    text-align: center;
    position: relative;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}
.skyscraper.pro {
    background: var(--iso-surface-left);
    border-color: var(--iso-primary);
    padding-top: 60px;
    padding-bottom: 60px;
    z-index: 2;
    box-shadow: 0 0 30px rgba(56, 189, 248, 0.2);
}
.p-badge {
    position: absolute;
    top: 0; left: 50%;
    transform: translate(-50%, -50%);
    background: var(--iso-primary);
    color: var(--iso-bg);
    font-family: var(--font-head);
    padding: 5px 20px;
    font-weight: 700;
    box-shadow: 0 5px 15px rgba(56, 189, 248, 0.4);
}
.p-title { font-size: 28px; margin-bottom: 10px; color: var(--iso-text); }
.p-desc { font-size: 14px; color: var(--iso-text-muted); margin-bottom: 25px; }
.p-price { font-family: var(--font-head); font-size: 56px; color: var(--iso-primary); margin-bottom: 30px; line-height: 1; }
.skyscraper.pro .p-price { color: var(--iso-accent); }
.p-price span { font-size: 18px; font-family: var(--font-body); color: var(--iso-text-muted); }
.p-feat { list-style: none; text-align: left; margin-bottom: 40px; }
.p-feat li { padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.05); font-size: 14px; display: flex; align-items: center; gap: 10px; }
.p-feat li::before { content: '>'; color: var(--iso-primary); font-family: var(--font-head); font-weight: 700; }

/* FAQ - Data Terminals */
.iso-faq {
    padding: 100px 0;
}
.faq-wrap {
    max-width: 800px;
    margin: 0 auto;
}
.terminal-box {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--iso-grid);
    margin-bottom: 20px;
    padding: 25px;
    position: relative;
}
.terminal-box::before {
    content: '';
    position: absolute;
    left: 0; top: 0; width: 4px; height: 100%;
    background: var(--iso-primary);
}
.q-title {
    font-family: var(--font-head);
    font-size: 22px;
    color: var(--iso-text);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.q-title::before { content: '[Q]'; color: var(--iso-primary); }
.q-ans {
    font-size: 16px;
    color: var(--iso-text-muted);
    padding-left: 35px;
}

/* Footer */
.iso-footer {
    background: #020617;
    padding: 80px 0 40px;
    border-top: 1px solid var(--iso-grid);
    position: relative;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 50px;
}
.f-brand { font-family: var(--font-head); font-size: 36px; color: var(--iso-primary); margin-bottom: 20px; }
.f-desc { color: var(--iso-text-muted); font-size: 15px; }
.f-links-wrap { display: flex; gap: 60px; }
.f-col h4 { font-family: var(--font-head); font-size: 20px; margin-bottom: 20px; color: var(--iso-text); }
.f-col a { display: block; color: var(--iso-text-muted); margin-bottom: 12px; font-size: 14px; transition: color 0.3s; }
.f-col a:hover { color: var(--iso-primary); }
.f-copy { text-align: center; color: #475569; font-size: 14px; border-top: 1px solid rgba(255,255,255,0.05); padding-top: 30px; }

/* Subpages */
.sub-header {
    padding: 200px 0 100px;
    text-align: center;
}
.sub-title { font-size: 64px; color: var(--iso-text); margin-bottom: 20px; }
.sub-title span { color: var(--iso-primary); }
.sub-desc { font-size: 20px; color: var(--iso-text-muted); }

.dl-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    padding-bottom: 100px;
}
.dl-box {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--iso-grid);
    padding: 40px;
    display: flex;
    align-items: center;
    gap: 30px;
    transition: all 0.3s;
}
.dl-box:hover {
    border-color: var(--iso-primary);
    background: rgba(30, 41, 59, 0.9);
    transform: translateY(-5px);
}
.dl-icon {
    font-size: 60px;
    color: var(--iso-primary);
}
.dl-info h3 { font-size: 28px; margin-bottom: 10px; }
.dl-info p { color: var(--iso-text-muted); margin-bottom: 20px; }

.help-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 50px;
    padding-bottom: 100px;
}
.help-nav { position: sticky; top: 120px; }
.help-nav a {
    display: block;
    padding: 15px 20px;
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--iso-grid);
    margin-bottom: 10px;
    font-family: var(--font-head);
    font-size: 18px;
    color: var(--iso-text-muted);
    transition: all 0.3s;
}
.help-nav a:hover, .help-nav a.active {
    background: var(--iso-primary);
    color: var(--iso-bg);
    border-color: var(--iso-primary);
}
.help-content {
    background: rgba(30, 41, 59, 0.3);
    border: 1px solid var(--iso-grid);
    padding: 50px;
}
.help-content h2 { font-size: 36px; color: var(--iso-primary); margin-bottom: 30px; border-bottom: 1px solid var(--iso-grid); padding-bottom: 15px; }
.help-content h3 { font-size: 24px; margin: 30px 0 15px; color: var(--iso-text); }
.help-content p, .help-content li { color: var(--iso-text-muted); margin-bottom: 15px; font-size: 16px; }
.help-content ul { padding-left: 20px; }

/* Responsive */
@media (max-width: 1024px) {
    .hero-grid, .dl-grid, .help-layout { grid-template-columns: 1fr; }
    .hero-visual { display: none; }
    .metrics-city { flex-wrap: wrap; }
    .feat-grid, .review-grid, .price-grid { grid-template-columns: repeat(2, 1fr); }
    .skyscraper.pro { padding: 40px 30px; }
    .footer-grid { grid-template-columns: 1fr; }
    .help-nav { position: static; display: flex; flex-wrap: wrap; gap: 10px; }
    .help-nav a { margin-bottom: 0; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero-title { font-size: 48px; }
    .hero-actions { flex-direction: column; }
    .feat-grid, .review-grid, .price-grid { grid-template-columns: 1fr; }
    .f-links-wrap { flex-direction: column; gap: 30px; }
    .dl-box { flex-direction: column; text-align: center; }
}