/* ===== HERO ===== */
.hero {
    margin: 60px 0 80px 0;
    position: relative;
}

.hud-border {
    position: absolute; width: 22px; height: 22px;
    border: 2px solid rgba(0,212,255,0.2);
}
.hud-tl { top: 0; left: 0; border-right: none; border-bottom: none; }
.hud-tr { top: 0; right: 0; border-left: none; border-bottom: none; }
.hud-bl { bottom: 0; left: 0; border-right: none; border-top: none; }
.hud-br { bottom: 0; right: 0; border-left: none; border-top: none; }

.terminal-window {
    background: var(--bg-panel);
    border: 1px solid rgba(255,255,255,0.065);
    padding: 50px 60px;
    position: relative;
    backdrop-filter: blur(14px);
    box-shadow: 0 30px 70px rgba(0,0,0,0.65), inset 0 0 30px rgba(0,212,255,0.025);
    overflow: hidden;
}

.terminal-window > * { position: relative; z-index: 1; }

/* Colorful network graph watermark */
.watermark-network {
    position: absolute;
    right: -4%;
    top: 50%;
    transform: translateY(-50%);
    width: 460px; height: 460px;
    pointer-events: none;
    z-index: 0 !important;
    opacity: 0.07;
}

.terminal-header {
    position: absolute; top: 0; left: 0; width: 100%; height: 26px;
    background: rgba(255,255,255,0.025);
    border-bottom: 1px solid rgba(255,255,255,0.045);
    display: flex; justify-content: space-between; align-items: center;
    padding: 0 16px; font-size: 0.68rem; color: var(--text-muted);
    font-family: var(--font-code);
}

.terminal-dots { display: flex; gap: 6px; }
.terminal-dots span { width: 10px; height: 10px; border-radius: 50%; }
.dot-red    { background: #FF5F56; }
.dot-yellow { background: #FFBD2E; }
.dot-green  { background: #27C93F; }

.sys-title {
    font-size: 4rem;
    line-height: 1.1;
    margin: 35px 0 18px 0;
    color: var(--text-bright);
}

.sys-title .version {
    font-size: 1.4rem; color: var(--neon-yellow); vertical-align: super; font-weight: 400;
}

/* Hero tag badges */
.hero-tags {
    display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 24px;
}
.hero-tag {
    font-size: 0.72rem;
    font-family: var(--font-code);
    padding: 3px 10px;
    border-radius: 2px;
    letter-spacing: 0.5px;
}
.tag-green  { background: rgba(0,230,118,0.08); color: var(--neon-green);  border: 1px solid rgba(0,230,118,0.28); }
.tag-cyan   { background: rgba(0,212,255,0.08); color: var(--neon-cyan);   border: 1px solid rgba(0,212,255,0.28); }
.tag-purple { background: rgba(189,147,249,0.08); color: var(--neon-purple); border: 1px solid rgba(189,147,249,0.28); }
.tag-amber  { background: rgba(255,184,108,0.08); color: var(--neon-amber); border: 1px solid rgba(255,184,108,0.28); }

.sys-desc {
    font-size: 1.08rem;
    max-width: 650px;
    margin-bottom: 38px;
    color: var(--text-body);
    line-height: 1.8;
}
.sys-desc span { color: var(--neon-cyan); }

.action-buttons { display: flex; gap: 18px; flex-wrap: wrap; }

/* ===== STATS ===== */
.stats-banner {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: rgba(255,255,255,0.045);
    border: 1px solid rgba(255,255,255,0.055);
    margin-bottom: 90px;
    overflow: hidden;
}

.stat-item {
    background: var(--bg-base);
    padding: 24px 16px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    transition: background 0.3s;
}
.stat-item:hover { background: rgba(8, 18, 28, 0.9); }

.stat-icon  { font-size: 1.5rem; line-height: 1; margin-bottom: 2px; }
.stat-value { font-family: var(--font-code); font-size: 1.85rem; font-weight: 700; }
.stat-label { font-size: 0.72rem; color: var(--text-muted); letter-spacing: 1.5px; text-transform: uppercase; }

.s-green  .stat-value { color: var(--neon-green); }
.s-cyan   .stat-value { color: var(--neon-cyan); }
.s-amber  .stat-value { color: var(--neon-amber); }
.s-purple .stat-value { color: var(--neon-purple); }

/* ===== FEATURES ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 18px;
    margin-bottom: 90px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.048);
    border-left: 3px solid var(--card-accent, var(--dark-green));
    padding: 28px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::after {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at top left, var(--card-glow, transparent) 0%, transparent 65%);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.feature-card:hover {
    border-left-color: var(--card-bright, var(--neon-green));
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.45);
}
.feature-card:hover::after { opacity: 1; }

.c-green  { --card-accent: var(--dark-green);  --card-bright: var(--neon-green);  --card-glow: rgba(0,230,118,0.06); }
.c-cyan   { --card-accent: var(--dark-cyan);   --card-bright: var(--neon-cyan);   --card-glow: rgba(0,212,255,0.06); }
.c-purple { --card-accent: var(--dark-purple); --card-bright: var(--neon-purple); --card-glow: rgba(189,147,249,0.06); }
.c-amber  { --card-accent: var(--dark-amber);  --card-bright: var(--neon-amber);  --card-glow: rgba(255,184,108,0.06); }
.c-blue   { --card-accent: var(--dark-blue);   --card-bright: var(--neon-blue);   --card-glow: rgba(121,184,255,0.06); }
.c-yellow { --card-accent: #4A3B00;            --card-bright: var(--neon-yellow); --card-glow: rgba(245,223,77,0.06); }

.feature-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-family: var(--font-code);
    font-size: 0.72rem;
    margin-bottom: 16px;
    padding: 3px 10px;
    border-radius: 2px;
}
.c-green  .feature-badge { background: rgba(0,230,118,0.08); color: var(--neon-green);  border: 1px solid rgba(0,230,118,0.22); }
.c-cyan   .feature-badge { background: rgba(0,212,255,0.08); color: var(--neon-cyan);   border: 1px solid rgba(0,212,255,0.22); }
.c-purple .feature-badge { background: rgba(189,147,249,0.08); color: var(--neon-purple); border: 1px solid rgba(189,147,249,0.22); }
.c-amber  .feature-badge { background: rgba(255,184,108,0.08); color: var(--neon-amber); border: 1px solid rgba(255,184,108,0.22); }
.c-blue   .feature-badge { background: rgba(121,184,255,0.08); color: var(--neon-blue);  border: 1px solid rgba(121,184,255,0.22); }
.c-yellow .feature-badge { background: rgba(245,223,77,0.08); color: var(--neon-yellow); border: 1px solid rgba(245,223,77,0.22); }

.feature-name { font-size: 1.12rem; color: var(--text-bright); margin-bottom: 12px; }
.feature-desc { font-size: 0.88rem; color: var(--text-body); line-height: 1.65; }

/* ===== HOW IT WORKS ===== */
.workflow-section { margin-bottom: 90px; }

.workflow-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    position: relative;
}

.workflow-steps::before {
    content: '';
    position: absolute;
    top: 39px;
    left: calc(16.7% + 16px);
    right: calc(16.7% + 16px);
    height: 1px;
    background: linear-gradient(90deg, var(--neon-green), var(--neon-cyan), var(--neon-purple));
    opacity: 0.35;
    z-index: 0;
}

.workflow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 78px; height: 78px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-code);
    font-size: 1.55rem;
    font-weight: 700;
    margin-bottom: 20px;
}
.step-1 .step-number { background: linear-gradient(rgba(0,230,118,0.10), rgba(0,230,118,0.10)) var(--bg-base); color: var(--neon-green);  border: 2px solid var(--neon-green);  box-shadow: 0 0 22px rgba(0,230,118,0.18); }
.step-2 .step-number { background: linear-gradient(rgba(0,212,255,0.10), rgba(0,212,255,0.10)) var(--bg-base); color: var(--neon-cyan);   border: 2px solid var(--neon-cyan);   box-shadow: 0 0 22px rgba(0,212,255,0.18); }
.step-3 .step-number { background: linear-gradient(rgba(189,147,249,0.10), rgba(189,147,249,0.10)) var(--bg-base); color: var(--neon-purple); border: 2px solid var(--neon-purple); box-shadow: 0 0 22px rgba(189,147,249,0.18); }

.step-title { font-size: 1.02rem; color: var(--text-bright); margin-bottom: 10px; }
.step-desc  { font-size: 0.86rem; color: var(--text-body); line-height: 1.65; max-width: 260px; }

/* ===== ARCHITECTURE ===== */
.architecture-panel {
    background: rgba(0,0,0,0.38);
    border: 1px solid rgba(255,255,255,0.055);
    border-top: 2px solid var(--neon-cyan);
    padding: 35px;
    font-family: var(--font-code);
    margin-bottom: 90px;
    overflow-x: auto;
}
.ascii-art { font-size: 0.86rem; white-space: pre; line-height: 1.28; margin-bottom: 24px; }
.ascii-art .h { color: var(--neon-cyan); }
.ascii-art .g { color: var(--neon-green); }
.ascii-art .p { color: var(--neon-purple); }
.ascii-art .d { color: var(--text-muted); }

/* ===== CONFIG PREVIEW ===== */
.config-preview {
    background: #01030a;
    border: 1px solid rgba(255,255,255,0.055);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 90px;
}
.config-header {
    background: #07090f;
    padding: 10px 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.045);
}
.config-dots { display: flex; gap: 6px; }
.config-dots span { width: 10px; height: 10px; border-radius: 50%; }
.config-filename { font-family: var(--font-code); font-size: 0.75rem; color: var(--text-muted); margin-left: 8px; }
.config-body {
    padding: 24px 28px;
    font-family: var(--font-code);
    font-size: 0.84rem;
    line-height: 1.9;
    overflow-x: auto;
}
.yaml-key     { color: var(--neon-cyan); }
.yaml-value   { color: var(--neon-amber); }
.yaml-string  { color: var(--neon-green); }
.yaml-comment { color: var(--text-muted); }
.yaml-section { color: var(--neon-purple); font-weight: 600; }

/* ===== PROTOCOLS ===== */
.protocol-grid {
    display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 90px;
}
.protocol-tag {
    padding: 8px 18px;
    font-family: var(--font-code);
    font-size: 0.84rem;
    transition: all 0.3s;
    cursor: default;
}
.pt-ss     { background: rgba(0,212,255,0.07); color: var(--neon-cyan);   border: 1px solid rgba(0,212,255,0.24); }
.pt-v2     { background: rgba(189,147,249,0.07); color: var(--neon-purple); border: 1px solid rgba(189,147,249,0.24); }
.pt-trojan { background: rgba(255,184,108,0.07); color: var(--neon-amber); border: 1px solid rgba(255,184,108,0.24); }
.pt-wg     { background: rgba(0,230,118,0.07); color: var(--neon-green);  border: 1px solid rgba(0,230,118,0.24); }
.protocol-tag:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(0,0,0,0.32); }

/* ===== PERFORMANCE ===== */
.perf-section { margin-bottom: 90px; }
.perf-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.perf-card {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.048);
    padding: 22px 24px;
}
.perf-label {
    font-size: 0.84rem;
    color: var(--text-body);
    margin-bottom: 14px;
    display: flex;
    justify-content: space-between;
}
.perf-label .val { font-family: var(--font-code); font-weight: 600; }
.perf-bar-bg {
    height: 7px;
    background: rgba(255,255,255,0.055);
    border-radius: 4px;
    overflow: hidden;
}
.perf-bar {
    height: 100%;
    border-radius: 4px;
    animation: barGrow 1.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
@keyframes barGrow { from { width: 0; } }
.bar-green  { background: linear-gradient(90deg, var(--dark-green), var(--neon-green)); }
.bar-cyan   { background: linear-gradient(90deg, var(--dark-cyan), var(--neon-cyan)); }
.bar-amber  { background: linear-gradient(90deg, var(--dark-amber), var(--neon-amber)); }
.bar-purple { background: linear-gradient(90deg, var(--dark-purple), var(--neon-purple)); }

/* ===== PLATFORM ENTRY ===== */
.platforms-section { margin-bottom: 90px; }

.platforms-intro {
    font-size: 0.92rem;
    color: var(--text-body);
    margin-bottom: 36px;
    line-height: 1.75;
    max-width: 680px;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
}

.platform-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 32px 16px 24px;
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.055);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
}

.platform-card::before {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 2px;
    transition: opacity 0.3s;
    opacity: 0.5;
}

.platform-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 48px rgba(0,0,0,0.55);
    border-color: rgba(255,255,255,0.1);
}
.platform-card:hover::before { opacity: 1; }

.pc-win::before    { background: linear-gradient(90deg, #00D4FF, #0087C8); }
.pc-mac::before    { background: linear-gradient(90deg, #BD93F9, #7855C8); }
.pc-android::before{ background: linear-gradient(90deg, #00E676, #009E4B); }
.pc-ios::before    { background: linear-gradient(90deg, #79B8FF, #3D7EC8); }
.pc-linux::before  { background: linear-gradient(90deg, #FFB86C, #C8793A); }

.pc-win:hover    { box-shadow: 0 20px 48px rgba(0,212,255,0.12); }
.pc-mac:hover    { box-shadow: 0 20px 48px rgba(189,147,249,0.12); }
.pc-android:hover{ box-shadow: 0 20px 48px rgba(0,230,118,0.12); }
.pc-ios:hover    { box-shadow: 0 20px 48px rgba(121,184,255,0.12); }
.pc-linux:hover  { box-shadow: 0 20px 48px rgba(255,184,108,0.12); }

.pc-os-icon {
    font-size: 2.4rem;
    line-height: 1;
    margin-bottom: 14px;
    filter: drop-shadow(0 0 8px rgba(255,255,255,0.15));
    transition: transform 0.3s;
}
.platform-card:hover .pc-os-icon { transform: scale(1.12); }

.pc-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}

.pc-arch {
    font-family: var(--font-code);
    font-size: 0.68rem;
    color: var(--text-muted);
    margin-bottom: 18px;
    letter-spacing: 0.5px;
}

.pc-action {
    font-family: var(--font-code);
    font-size: 0.75rem;
    padding: 5px 14px;
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--text-muted);
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
}
.platform-card:hover .pc-action { color: var(--text-bright); border-color: rgba(255,255,255,0.22); }

.pc-win:hover    .pc-action { color: var(--neon-cyan); border-color: rgba(0,212,255,0.35); }
.pc-mac:hover    .pc-action { color: var(--neon-purple); border-color: rgba(189,147,249,0.35); }
.pc-android:hover .pc-action { color: var(--neon-green); border-color: rgba(0,230,118,0.35); }
.pc-ios:hover    .pc-action { color: var(--neon-blue); border-color: rgba(121,184,255,0.35); }
.pc-linux:hover  .pc-action { color: var(--neon-amber); border-color: rgba(255,184,108,0.35); }

.pc-arrow { transition: transform 0.25s; display: inline-block; }
.platform-card:hover .pc-arrow { transform: translateX(4px); }

/* ===== DOWNLOAD ===== */
.download-console {
    background: #01030a;
    border: 1px solid rgba(255,255,255,0.055);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 90px;
}

.console-header {
    background: #07090f;
    padding: 10px 18px;
    display: flex;
    gap: 8px;
    align-items: center;
    border-bottom: 1px solid rgba(255,255,255,0.045);
}
.console-title {
    font-family: var(--font-code);
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-left: 10px;
}
.console-btn   { width: 12px; height: 12px; border-radius: 50%; }
.console-btn.r { background: #FF5F56; }
.console-btn.y { background: #FFBD2E; }
.console-btn.g { background: #27C93F; }

.download-list { list-style: none; padding: 8px 0; }

.download-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    transition: background 0.2s;
}
.download-item:last-child { border-bottom: none; }
.download-item:hover { background: rgba(255,255,255,0.018); }

.platform-info  { display: flex; align-items: center; gap: 18px; }
.platform-icon  { font-size: 1.6rem; width: 34px; text-align: center; line-height: 1; }
.platform-name  { color: var(--text-bright); font-weight: 600; width: 82px; font-size: 0.93rem; }
.platform-cmd   { font-family: var(--font-code); color: var(--text-muted); font-size: 0.86rem; word-break: break-all; overflow-wrap: break-word; }
.platform-cmd .prompt { color: var(--neon-green); }

.dl-actions { display: flex; gap: 10px; align-items: center; flex-shrink: 0; }
.version-badge {
    font-family: var(--font-code); font-size: 0.7rem;
    color: var(--neon-amber); border: 1px solid rgba(255,184,108,0.3);
    padding: 2px 8px; flex-shrink: 0;
}
.dl-link {
    font-family: var(--font-code); font-size: 0.83rem;
    color: var(--neon-cyan);
    padding: 6px 14px;
    border: 1px solid rgba(0,212,255,0.3);
    transition: all 0.2s;
    white-space: nowrap;
}
.dl-link:hover { background: rgba(0,212,255,0.09); color: var(--text-bright); text-shadow: none; }

/* ===== FAQ ===== */
.faq-container { margin-bottom: 90px; }
.faq-item {
    border-bottom: 1px solid rgba(255,255,255,0.045);
    padding: 22px 0;
}
.faq-q {
    font-size: 1.02rem; color: var(--text-bright); font-weight: 600; margin-bottom: 12px;
    display: flex; align-items: flex-start; gap: 12px;
}
.faq-q-badge {
    font-size: 0.68rem; font-family: var(--font-code);
    color: var(--neon-yellow); border: 1px solid rgba(245,223,77,0.38);
    padding: 1px 6px; flex-shrink: 0; margin-top: 3px;
}
.faq-a {
    font-size: 0.88rem; color: var(--text-body); line-height: 1.72;
    padding-left: 42px; border-left: 2px solid rgba(255,255,255,0.055); margin-left: 12px;
}
.faq-a code {
    background: rgba(0,212,255,0.07); padding: 1px 6px;
    border: 1px solid rgba(0,212,255,0.2); color: var(--neon-cyan);
    font-family: var(--font-code); font-size: 0.8rem; border-radius: 2px;
}

/* ===== RESPONSIVE (page-specific) ===== */
@media (max-width: 860px) {
    .sys-title { font-size: 2.6rem; }
    .terminal-window { padding: 34px 22px; }
    .action-buttons { flex-direction: column; }
    .btn { width: 100%; }
    .stats-banner { grid-template-columns: repeat(2, 1fr); }
    .workflow-steps { grid-template-columns: 1fr; }
    .workflow-steps::before { display: none; }
    .perf-grid { grid-template-columns: 1fr; }
    .platforms-grid { grid-template-columns: repeat(3, 1fr); }
    .download-item { flex-direction: column; align-items: flex-start; gap: 14px; }
    .platform-info { flex-wrap: wrap; }
    .platform-name { width: auto; }
}

@media (max-width: 560px) {
    .platforms-grid { grid-template-columns: repeat(2, 1fr); }
    .sys-title { font-size: 2rem; }
    .faq-a { padding-left: 20px; margin-left: 8px; }
}