/* ==========================================================================
   GLOBAL DESIGN TOKENS & ARCHITECTURAL DESIGN SYSTEM — PHASE 03
   Aesthetic: Apple-Level Minimalism × Refined Brutalism × Architectural UX
   Professional Identity: AI Engineer · Software Architect · Researcher
   ========================================================================== */

/* --------------------------------------------------------------------------
   01. DESIGN TOKENS & THEMING (CSS Custom Properties)
   -------------------------------------------------------------------------- */
:root {
    /* ---- DARK THEME (Default) — Deep Graphite Computational Space ---- */
    --color-bg-base: #0c0d12;
    --color-bg-surface: #12141c;
    --color-bg-elevated: #171a24;
    --color-bg-subtle: rgba(255, 255, 255, 0.035);
    --color-bg-inverse: #f8f9fa;

    --color-border-subtle: rgba(255, 255, 255, 0.06);
    --color-border-structural: rgba(255, 255, 255, 0.10);
    --color-border-strong: rgba(255, 255, 255, 0.18);
    --color-border-focus: #00e599;

    --color-text-primary: #f4f5f8;
    --color-text-secondary: #9499a5;
    --color-text-muted: #565b66;
    --color-text-dim: #343840;
    --color-text-inverse: #0c0d12;

    /* Global Architectural Accent */
    --color-accent: #00e599;
    --color-accent-subtle: rgba(0, 229, 153, 0.08);
    --color-accent-border: rgba(0, 229, 153, 0.25);
    --color-accent-glow: rgba(0, 229, 153, 0.2);

    /* Controlled Project Specific Accents */
    --accent-pharma: #00e599;
    --accent-mazut: #00d4ff;
    --accent-chaos: #ff3366;
    --accent-zarnegar: #f0b90b;

    /* ---- UNIFIED RESPONSIVE BREAKPOINT TOKENS ---- */
    --bp-xs: 360px;
    --bp-sm: 480px;
    --bp-md: 768px;
    --bp-lg: 1024px;
    --bp-xl: 1280px;
    --bp-2xl: 1440px;
    --bp-3xl: 1920px;

    /* ---- TYPOGRAPHY SCALE (Fluid Clamped) ---- */
    --font-sans: 'Vazirmatn', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: 'Fira Code', 'JetBrains Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    --font-display: var(--font-sans);   /* Vazirmatn handles both Persian and Latin beautifully */
    --font-en-heading: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    --text-2xs: clamp(0.64rem, 1.8vw, 0.72rem);   /* 10.5-11.5px */
    --text-xs: clamp(0.72rem, 2vw, 0.8rem);       /* 11.5-12.8px */
    --text-sm: clamp(0.82rem, 2.2vw, 0.9rem);     /* 13-14.4px */
    --text-base: clamp(0.92rem, 2.4vw, 1.02rem);  /* 14.8-16.3px */
    --text-md: clamp(1.05rem, 2.8vw, 1.18rem);    /* 16.8-18.8px */
    --text-lg: clamp(1.18rem, 3.2vw, 1.35rem);    /* 18.8-21.6px */
    --text-xl: clamp(1.4rem, 4vw, 1.75rem);       /* 22.4-28px */
    --text-2xl: clamp(1.75rem, 5vw, 2.4rem);      /* 28-38.4px */
    --text-3xl: clamp(2.2rem, 6vw, 3.2rem);       /* 35-51.2px */
    --text-display: clamp(2.6rem, 8vw, 4.4rem);   /* 41.6-70.4px */

    /* ---- SPACING SYSTEM (8-Point Standard Scale) ---- */
    --space-2: 0.125rem;  /* 2px */
    --space-4: 0.25rem;   /* 4px */
    --space-6: 0.375rem;  /* 6px */
    --space-8: 0.5rem;    /* 8px */
    --space-10: 0.625rem; /* 10px */
    --space-12: 0.75rem;  /* 12px */
    --space-14: 0.875rem; /* 14px */
    --space-16: 1rem;     /* 16px */
    --space-18: 1.125rem; /* 18px */
    --space-20: 1.25rem;  /* 20px */
    --space-24: 1.5rem;   /* 24px */
    --space-28: 1.75rem;  /* 28px */
    --space-32: 2rem;     /* 32px */
    --space-36: 2.25rem;  /* 36px */
    --space-40: 2.5rem;   /* 40px */
    --space-48: 3rem;     /* 48px */
    --space-56: 3.5rem;   /* 56px */
    --space-64: 4rem;     /* 64px */
    --space-96: 6rem;     /* 96px */
    --space-128: 8rem;    /* 128px */
    --space-section: clamp(3.5rem, 8vw, 6rem);

    /* ---- CONTENT WIDTHS & FLUID GUTTERS ---- */
    --container-full: 100%;
    --container-wide: 1440px;
    --container-max: 1320px;
    --container-editorial: 1140px;
    --container-reading: 780px;
    --container-narrow: 640px;

    --gutter-mobile: clamp(1rem, 4vw, 1.5rem);
    --gutter-tablet: clamp(1.5rem, 4vw, 2rem);
    --gutter-desktop: clamp(2rem, 3vw, 3rem);
    --nav-height: 64px;

    /* ---- SAFE AREA & VIEWPORT UNITS ---- */
    --sat: env(safe-area-inset-top, 0px);
    --sab: env(safe-area-inset-bottom, 0px);
    --sal: env(safe-area-inset-left, 0px);
    --sar: env(safe-area-inset-right, 0px);

    /* ---- BORDERS & RADIUS — Semantic Premium Scale ---- */
    --radius-none: 0px;     /* sharp corners */
    --radius-sm: 2px;       /* architectural rule lines only */
    --radius-chip: 6px;     /* technical tags, badges, status labels */
    --radius-md: 8px;       /* intermediate cards, badges, chips */
    --radius-control: 10px; /* buttons, inputs, toggles, togglers */
    --radius-card: 14px;    /* cards, panels, preview panes */
    --radius-module: 20px;  /* hero modules, large media blocks */
    --radius-full: 9999px;  /* pills, avatars */

    /* ---- SHADOW SYSTEM (Low-opacity, no colored glow on ordinary controls) ---- */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.14), 0 1px 2px rgba(0,0,0,0.10);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.18), 0 2px 4px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.22), 0 4px 8px rgba(0,0,0,0.14);
    /* Accent glow ONLY for: primary CTA, active architecture nodes, focus rings */
    --glow-accent: 0 0 0 3px rgba(0, 229, 153, 0.20);

    /* ---- MOTION TIERS (Physical & Controlled) ---- */
    --ease-editorial: cubic-bezier(0.16, 1, 0.3, 1);
    --motion-micro: 120ms var(--ease-editorial);
    --motion-interface: 240ms var(--ease-editorial);
    --motion-reveal: 550ms var(--ease-editorial);

    /* ---- UNIFIED Z-INDEX HIERARCHY ---- */
    --z-background: -10;
    --z-canvas: 1;
    --z-content: 10;
    --z-sticky: 50;
    --z-header: 100;
    --z-dropdown: 150;
    --z-mobile-menu: 200;
    --z-drawer: 250;
    --z-modal: 300;
    --z-toast: 400;
}

/* ---- LIGHT THEME SPECIFICATION — Architectural White Gallery Atmosphere ---- */
[data-theme="light"] {
    --color-bg-base: #f8f9fa;
    --color-bg-surface: #ffffff;
    --color-bg-elevated: #f1f3f5;
    --color-bg-subtle: rgba(0, 0, 0, 0.025);
    --color-bg-inverse: #0c0d12;

    --color-border-subtle: rgba(0, 0, 0, 0.06);
    --color-border-structural: rgba(0, 0, 0, 0.10);
    --color-border-strong: rgba(0, 0, 0, 0.18);
    --color-border-focus: #008f5d;

    --color-text-primary: #14171d;
    --color-text-secondary: #4a505b;
    --color-text-muted: #727986;
    --color-text-dim: #9aa2af;
    --color-text-inverse: #ffffff;

    --color-accent: #009963;
    --color-accent-subtle: rgba(0, 153, 99, 0.08);
    --color-accent-border: rgba(0, 153, 99, 0.25);
    --color-accent-glow: rgba(0, 153, 99, 0.15);
}

/* --------------------------------------------------------------------------
   02. RESET & BASE ELEMENTS
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: var(--color-bg-base);
    color: var(--color-text-primary);
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg-base);
    color: var(--color-text-primary);
    line-height: 1.75;
    overflow-x: hidden;
    direction: rtl;
    min-height: 100vh;
    min-height: 100svh;
    transition: background-color var(--motion-interface), color var(--motion-interface);
}

/* RTL / LTR Logical Direction Support */
html[lang="en"], [dir="ltr"] {
    direction: ltr;
    text-align: left;
}

html[lang="fa"], [dir="rtl"] {
    direction: rtl;
    text-align: right;
}

/* Universal Media & Canvas Overflow Safety */
img, svg, video {
    max-width: 100%;
    height: auto;
}

canvas {
    max-width: 100%;
}

/* Unconstrained Flex & Grid Child Safety */
.hero-layout, .about-grid, .systems-editorial-flow, .systems-spatial-duo, 
.system-node-item, .footer-container, .work-controls-bar, .agent-terminal-wrapper,
.case-container, .case-body-grid, .case-layout-container {
    min-width: 0;
}

h1, h2, h3, h4, h5, h6, p, span, a, button, input, textarea {
    overflow-wrap: break-word;
    word-break: break-word;
}

/* Universal Responsive Table Wrapper */
.table-responsive-wrapper {
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border: 1px solid var(--color-border-structural);
    border-radius: var(--radius-card);
    margin: var(--space-20) 0;
    background: var(--color-bg-surface);
}

/* Universal Code Block Overflow Safety */
pre, code, .code-snippet, .code-snippet-box, .inspector-code {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    word-break: normal;
}


::selection {
    background: var(--color-accent);
    color: var(--color-text-inverse);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--motion-micro), border-color var(--motion-micro);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

/* Accessible Keyboard Focus Outline */
:focus-visible {
    outline: 2px solid var(--color-border-focus);
    outline-offset: 3px;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg-base);
}
::-webkit-scrollbar-thumb {
    background: var(--color-border-structural);
    border-radius: var(--radius-none);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
}

/* ==========================================================================
   GLOBAL BACKGROUND SYSTEM & VISUAL ATMOSPHERE — 6-LAYER COMPUTATIONAL SPACE
   ========================================================================== */

/* Layer 01: Deep Graphite Base defined on html & body */

/* Layer 02: Very Subtle Radial Light Falloff & Vignette */
.bg-atmosphere {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: var(--z-background);
    background: radial-gradient(circle 950px at 75% 20%, rgba(26, 32, 46, 0.45) 0%, rgba(16, 18, 26, 0.2) 55%, transparent 80%);
    transition: background var(--motion-interface);
}

[data-theme="light"] .bg-atmosphere {
    background: radial-gradient(circle 950px at 75% 20%, rgba(226, 232, 240, 0.65) 0%, rgba(241, 244, 249, 0.25) 55%, transparent 80%);
}

/* Layer 03: Extremely Faint Technical Architectural Grid */
.bg-grid {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: var(--z-background);
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse 85% 70% at 50% 30%, black 35%, transparent 95%);
    -webkit-mask-image: radial-gradient(ellipse 85% 70% at 50% 30%, black 35%, transparent 95%);
    transition: opacity var(--motion-interface);
}

[data-theme="light"] .bg-grid {
    background-image: 
        linear-gradient(to right, rgba(0, 0, 0, 0.022) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0, 0, 0, 0.022) 1px, transparent 1px);
    mask-image: radial-gradient(ellipse 85% 70% at 50% 30%, black 35%, transparent 95%);
    -webkit-mask-image: radial-gradient(ellipse 85% 70% at 50% 30%, black 35%, transparent 95%);
}

/* Layer 04: Subtle Procedural Material Grain (Anti-Banding SVG feTurbulence) */
.bg-noise {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.022;
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

[data-theme="light"] .bg-noise {
    opacity: 0.015;
    mix-blend-mode: multiply;
}

/* Layer 05: Architectural Structural Guide Lines & Transitions */
.bg-guide-lines {
    position: absolute;
    inset: 0;
    pointer-events: none;
    max-width: var(--container-max);
    margin: 0 auto;
    border-left: 1px solid rgba(255, 255, 255, 0.025);
    border-right: 1px solid rgba(255, 255, 255, 0.025);
    z-index: 0;
}

[data-theme="light"] .bg-guide-lines {
    border-color: rgba(0, 0, 0, 0.03);
}

/* 3D Digital Core Canvas Layer (Layer 06: Integrated Hardware Acceleration) */
#three-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-canvas);
    pointer-events: none;
}

/* --------------------------------------------------------------------------
   03. GLOBAL NAVIGATION (Apple-Minimalist × Refined Brutalist)
   -------------------------------------------------------------------------- */
#main-nav {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    height: var(--nav-height);
    background: rgba(8, 9, 12, 0.75);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--space-32);
    transition: background-color var(--motion-interface), border-color var(--motion-interface), box-shadow var(--motion-interface);
}

[data-theme="light"] #main-nav {
    background: rgba(247, 247, 250, 0.85);
}

/* Scrolled state */
#main-nav.scrolled {
    background: var(--color-bg-base);
    border-bottom-color: var(--color-border-structural);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.nav-brand-group {
    display: flex;
    align-items: center;
    gap: var(--space-12);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-10);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--color-text-primary);
}

.nav-logo:hover {
    color: var(--color-accent);
}

.nav-logo svg {
    color: var(--color-accent);
}

.nav-center-group {
    display: flex;
    align-items: center;
    gap: var(--space-24);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-20);
}

.nav-link {
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    letter-spacing: 0.02em;
    padding: var(--space-6) var(--space-8);
    position: relative;
    transition: color var(--motion-micro);
}

.nav-link:hover {
    color: var(--color-text-primary);
}

.nav-link.active {
    color: var(--color-accent);
    font-weight: 600;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -16px;
    inset-inline: var(--space-8);
    height: 2px;
    background: var(--color-accent);
}

/* Nav Actions Group (Controls + CTA) */
.nav-actions-group {
    display: flex;
    align-items: center;
    gap: var(--space-12);
}

.btn-theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1.5px solid var(--color-border-structural);
    border-radius: var(--radius-control);
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    transition: all var(--motion-micro);
}

.btn-theme-toggle:hover {
    color: var(--color-accent);
    border-color: var(--color-accent-border);
    background: var(--color-bg-surface);
}

.nav-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-6);
    background: var(--color-accent);
    border: 1.5px solid var(--color-accent);
    color: #000;
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 600;
    padding: var(--space-8) var(--space-16);
    border-radius: var(--radius-control);
    letter-spacing: 0.01em;
    transition: all var(--motion-micro);
    min-height: 36px;
}

.nav-cta-btn:hover {
    background: #00c985;
    border-color: #00c985;
    color: #000;
    /* No box-shadow glow on CTA hover */
}

/* Mobile Toggle Hamburger */
#nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 8px;
    border: 1.5px solid var(--color-border-structural);
    border-radius: var(--radius-control);
}

#nav-toggle span {
    display: block;
    width: 100%;
    height: 1.5px;
    background: var(--color-text-primary);
    transition: transform var(--motion-micro), opacity var(--motion-micro);
}

#nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}
#nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}
#nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile Editorial Full-Screen Navigation Drawer */
#mobile-menu {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg-base);
    border-top: 1px solid var(--color-border-structural);
    padding: var(--space-32) var(--space-24);
    flex-direction: column;
    justify-content: space-between;
    z-index: var(--z-mobile-menu);
    overflow-y: auto;
}

#mobile-menu.open {
    display: flex;
}

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-16);
}

.mobile-nav-item {
    display: flex;
    align-items: baseline;
    gap: var(--space-12);
    border-bottom: 1px solid var(--color-border-subtle);
    padding-bottom: var(--space-12);
}

.mobile-nav-idx {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.mobile-link {
    font-family: var(--font-sans);
    font-size: var(--text-2xl);
    font-weight: 700;
    letter-spacing: 0.01em;
    color: var(--color-text-primary);
}

.mobile-link:hover {
    color: var(--color-accent);
}

.mobile-menu-footer {
    display: flex;
    flex-direction: column;
    gap: var(--space-16);
    border-top: 1px solid var(--color-border-structural);
    padding-top: var(--space-20);
}

/* --------------------------------------------------------------------------
   04. CONTENT LAYOUT & PAGE SHELL SYSTEM
   -------------------------------------------------------------------------- */
#content {
    position: relative;
    z-index: var(--z-content);
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-32);
}

section {
    padding: var(--space-section) 0;
    /* No universal border-bottom — hierarchy via whitespace + surface tonal shifts */
    position: relative;
    scroll-margin-top: calc(var(--nav-height) + var(--space-20));
}

/* Controlled Section Atmosphere & Tonal Shifts */
#hero {
    /* Hero: Deep graphite computational field */
    background: transparent;
}

#systems {
    /* Selected Systems: Slightly lighter graphite with soft surface depth */
    position: relative;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.006) 0%, rgba(255, 255, 255, 0.015) 50%, rgba(255, 255, 255, 0.004) 100%);
}

[data-theme="light"] #systems {
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.004) 0%, rgba(0, 0, 0, 0.012) 50%, rgba(0, 0, 0, 0.003) 100%);
}

#agent-studio {
    /* Agent Studio: Darker, focused computational space */
    position: relative;
    background: rgba(10, 11, 15, 0.45);
    border-radius: var(--radius-card);
}

[data-theme="light"] #agent-studio {
    background: rgba(240, 242, 246, 0.4);
}

#research, #resume, #about {
    /* Research, Resume, About: Calmer, neutral editorial surface */
    background: transparent;
}

#contact {
    /* Contact: Return to deeper grounding atmosphere */
    position: relative;
    background: linear-gradient(180deg, transparent 0%, rgba(10, 11, 15, 0.6) 100%);
}

[data-theme="light"] #contact {
    background: linear-gradient(180deg, transparent 0%, rgba(235, 238, 243, 0.5) 100%);
}

/* ==========================================================================
   PROJECT-SPECIFIC ATMOSPHERES (Subtle, Restrained, Non-Distracting)
   ========================================================================== */

/* Nemo: Subtle molecular hexagonal topology */
.case-atmosphere-pharma {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -5;
    background-image: radial-gradient(circle at 80% 15%, rgba(0, 229, 153, 0.04) 0%, transparent 60%),
                      radial-gradient(circle 32px at 16px 16px, rgba(0, 229, 153, 0.012) 1px, transparent 1px);
    background-size: 100% 100%, 32px 32px;
}

/* Mazut: Linear industrial process geometry & structural flow */
.case-atmosphere-mazut {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -5;
    background-image: radial-gradient(circle at 80% 15%, rgba(0, 212, 255, 0.04) 0%, transparent 60%),
                      linear-gradient(90deg, rgba(0, 212, 255, 0.014) 1px, transparent 1px);
    background-size: 100% 100%, 96px 100%;
}

/* Chaos Lab: Faint dynamical phase-space contour lines & vector drift */
.case-atmosphere-chaos {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -5;
    background-image: radial-gradient(circle at 75% 20%, rgba(255, 51, 102, 0.035) 0%, transparent 65%),
                      radial-gradient(ellipse 400px 300px at 70% 30%, rgba(255, 51, 102, 0.015) 0%, transparent 70%);
}

/* Zarnegar: Software architecture topology & telemetry matrix */
.case-atmosphere-zarnegar {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -5;
    background-image: radial-gradient(circle at 80% 15%, rgba(240, 185, 11, 0.035) 0%, transparent 60%),
                      linear-gradient(0deg, rgba(240, 185, 11, 0.012) 1px, transparent 1px);
    background-size: 100% 100%, 100% 48px;
}

/* Agent Lab: Graph-based node & connection topology */
.case-atmosphere-agent {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -5;
    background-image: radial-gradient(circle at 75% 20%, rgba(0, 255, 170, 0.04) 0%, transparent 60%),
                      radial-gradient(circle 2px at 48px 48px, rgba(0, 255, 170, 0.02) 1.5px, transparent 1.5px);
    background-size: 100% 100%, 48px 48px;
}

/* Section Header Standard Grammar */
.section-label {
    display: flex;
    align-items: center;
    gap: var(--space-12);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: var(--space-20);
}

.section-label .label-line {
    width: 20px;
    height: 1px;
    background: var(--color-border-strong);
}

.section-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    letter-spacing: 0.03em;
    color: var(--color-text-primary);
    margin-bottom: var(--space-48);
}

/* Breadcrumb Navigation Component (for Case Studies) */
.breadcrumb-trail {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--space-24);
}

.breadcrumb-trail a {
    color: var(--color-text-secondary);
}

.breadcrumb-trail a:hover {
    color: var(--color-accent);
}

.bc-sep {
    color: var(--color-border-strong);
}

/* --------------------------------------------------------------------------
   05. HERO STAGE EXPERIENCE
   -------------------------------------------------------------------------- */
.hero-stage {
    min-height: calc(100svh - var(--nav-height));
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--space-48) 0 var(--space-24);
}

.hero-layout {
    display: grid;
    grid-template-columns: 1.18fr 0.82fr;
    gap: var(--space-48);
    align-items: center;
    flex: 1;
}

.hero-identity-pane {
    display: flex;
    flex-direction: column;
    gap: var(--space-20);
    position: relative;
    z-index: 5;
}

.hero-meta-top {
    display: flex;
    align-items: center;
    gap: var(--space-16);
    flex-wrap: wrap;
}

.hero-index-badge {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-accent);
    background: var(--color-accent-subtle);
    border: 1px solid var(--color-accent-border);
    padding: var(--space-2) var(--space-8);
    border-radius: var(--radius-chip);
    letter-spacing: 0.08em;
}

.hero-roles-banner {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    letter-spacing: 0.06em;
}

.role-sep {
    color: var(--color-text-muted);
}

.hero-name-heading {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.name-line-fa {
    font-family: var(--font-sans);
    font-size: var(--text-display);
    font-weight: 800;
    line-height: 1.1;
    color: var(--color-text-primary);
    letter-spacing: -0.01em;
}

.name-line-en {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--color-accent);
    text-transform: uppercase;
    opacity: 0.9;
}

.hero-statement {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    max-width: 680px;
    font-size: var(--text-lg);
    line-height: 1.75;
    color: var(--color-text-primary);
}

.hero-statement strong {
    color: var(--color-text-primary);
    font-weight: 700;
    font-size: 1.28rem;
    letter-spacing: -0.01em;
}

.statement-fa {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.hero-focus-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--space-8);
    font-family: var(--font-sans);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-text-secondary);
    border: 1.5px solid var(--color-border-subtle);
    background: var(--color-bg-surface);
    padding: var(--space-8) var(--space-14);
    border-radius: var(--radius-control);
    width: fit-content;
    margin-top: var(--space-4);
}

.focus-pulse {
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--color-accent);
    animation: focusPulseAnim 2.4s ease-in-out infinite alternate;
}

@keyframes focusPulseAnim {
    0% { opacity: 0.4; transform: scale(0.9); }
    100% { opacity: 1; transform: scale(1.2); }
}

.hero-actions-row {
    display: flex;
    align-items: center;
    gap: var(--space-16);
    flex-wrap: wrap;
    margin-top: var(--space-16);
}

/* Standardized Button System — Premium Product Controls */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-8);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 600;
    padding: var(--space-12) var(--space-20);
    border-radius: var(--radius-control);
    transition: all var(--motion-interface);
    white-space: nowrap;
    min-height: 44px;
    cursor: pointer;
}

.btn-primary {
    background: var(--color-accent);
    color: #000;
    border: 1.5px solid var(--color-accent);
}

.btn-primary:hover {
    background: #00c985;
    border-color: #00c985;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    /* No colored glow */
}

.btn-secondary {
    background: var(--color-bg-surface);
    color: var(--color-text-primary);
    border: 1.5px solid var(--color-border-structural);
}

.btn-secondary:hover {
    background: var(--color-bg-elevated);
    border-color: var(--color-border-strong);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-sm);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border: 1.5px solid transparent;
}

.btn-ghost:hover {
    color: var(--color-text-primary);
    border-color: var(--color-border-subtle);
    background: var(--color-bg-subtle);
}

.btn-arrow {
    font-family: var(--font-mono);
    font-size: 0.9em;
    transition: transform var(--motion-micro);
}

[dir="rtl"] .btn:hover .btn-arrow {
    transform: translateX(3px);
}
[dir="ltr"] .btn:hover .btn-arrow {
    transform: translateX(-3px);
}

.hero-tertiary-link {
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 500;
    padding: var(--space-10) var(--space-16);
    border: 1.5px solid var(--color-border-subtle);
    border-radius: var(--radius-control);
    color: var(--color-text-secondary);
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}

.hero-tertiary-link:hover {
    color: var(--color-text-primary);
    border-color: var(--color-border-strong);
    background: var(--color-bg-subtle);
}

/* Proof Strip: Selected Domains */
.hero-proof-strip {
    display: flex;
    align-items: center;
    gap: var(--space-12);
    margin-top: var(--space-8);
    padding: var(--space-10) var(--space-16);
    background: var(--color-bg-surface);
    border: 1.5px solid var(--color-border-subtle);
    border-radius: var(--radius-card);
    width: fit-content;
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    flex-wrap: wrap;
}

.proof-label {
    color: var(--color-accent);
    font-weight: 600;
    font-size: var(--text-xs);
    letter-spacing: 0.06em;
    padding-inline-start: var(--space-8);
    border-inline-start: 1px solid var(--color-border-structural);
}

.proof-tags {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    flex-wrap: wrap;
}

.proof-item {
    font-weight: 500;
}

.proof-sep {
    color: var(--color-text-muted);
}

/* 3D Digital Core Viewport Pane */
.hero-core-pane {
    position: relative;
    height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

/* Layer 06: Localized Light Falloff & Core Illumination */
.hero-core-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 130%;
    height: 130%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: -1;
    background: radial-gradient(circle 280px at 50% 50%, rgba(0, 229, 153, 0.08) 0%, rgba(0, 229, 153, 0.02) 45%, transparent 72%);
    border-radius: 50%;
    filter: blur(12px);
    transition: background 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.6s ease;
}

[data-theme="light"] .hero-core-glow {
    background: radial-gradient(circle 280px at 50% 50%, rgba(0, 153, 99, 0.06) 0%, rgba(0, 0, 0, 0.02) 45%, transparent 72%);
    filter: blur(16px);
}

.core-static-fallback {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: var(--space-16);
    pointer-events: none;
}

.fallback-geometry {
    width: 220px;
    height: 220px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.f-ring {
    position: absolute;
    border: 1px dashed var(--color-border-structural);
    border-radius: 50%;
}

.f-ring-1 { width: 100%; height: 100%; animation: spinFallback 40s linear infinite; }
.f-ring-2 { width: 70%; height: 70%; border-style: solid; border-color: var(--color-accent-border); animation: spinFallbackRev 24s linear infinite; }
.f-core { width: 30%; height: 30%; background: var(--color-accent-subtle); border: 1px solid var(--color-accent); transform: rotate(45deg); }

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

.fallback-label {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
}

/* Micro Interactive Technical Labels */
.core-micro-labels {
    position: absolute;
    inset: 0;
    pointer-events: none;
    display: flex;
    opacity: 0;
    transition: opacity var(--motion-interface);
}

.c-label {
    position: absolute;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--color-accent);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-accent-border);
    padding: 2px 6px;
    border-radius: var(--radius-chip);
    letter-spacing: 0.08em;
}

.c-label-1 { top: 15%; right: 10%; }
.c-label-2 { bottom: 20%; right: 15%; }
.c-label-3 { top: 25%; left: 10%; }
.c-label-4 { bottom: 15%; left: 15%; }

/* Bottom Hero Telemetry Ribbon */
.hero-telemetry-ribbon {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--color-border-subtle);
    padding-top: var(--space-20);
    margin-top: var(--space-32);
    flex-wrap: wrap;
    gap: var(--space-16);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
}

.tele-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.tele-k {
    color: var(--color-text-muted);
    font-size: 0.68rem;
    letter-spacing: 0.1em;
}

.tele-v {
    color: var(--color-text-secondary);
    font-weight: 500;
}

.tele-v.status-active {
    color: var(--color-accent);
    font-weight: 700;
}

.scroll-prompt .tele-v {
    color: var(--color-accent);
    animation: scrollPromptDrift 1.8s ease-in-out infinite alternate;
}

@keyframes scrollPromptDrift {
    0% { transform: translateY(0); }
    100% { transform: translateY(3px); }
}

/* --------------------------------------------------------------------------
   06. PHILOSOPHY & ABOUT (Structural Manifesto Grid)
   -------------------------------------------------------------------------- */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-48);
    align-items: start;
}

.about-text h2 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-24);
    color: var(--color-text-primary);
}

.about-text h2 em {
    font-style: normal;
    color: var(--color-accent);
}

.about-text p {
    color: var(--color-text-secondary);
    font-size: var(--text-base);
    margin-bottom: var(--space-16);
}

.domain-pills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-8);
    margin-top: var(--space-24);
}

.d-pill {
    background: var(--color-bg-surface);
    border: 1.5px solid var(--color-border-subtle);
    color: var(--color-text-secondary);
    font-family: var(--font-sans);
    font-size: var(--text-xs);
    font-weight: 500;
    padding: var(--space-6) var(--space-12);
    border-radius: var(--radius-chip);
}

.about-core-card {
    background: var(--color-bg-surface);
    border: 1.5px solid var(--color-border-structural);
    border-radius: var(--radius-card);
    padding: var(--space-24);
}

.core-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-border-subtle);
    padding-bottom: var(--space-12);
    margin-bottom: var(--space-20);
}

.core-title {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
}

.core-status {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-accent);
    font-weight: 700;
}

.core-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-16);
}

.core-item {
    display: flex;
    gap: var(--space-16);
    font-size: var(--text-sm);
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.core-item strong {
    color: var(--color-text-primary);
}

.c-num {
    font-family: var(--font-mono);
    color: var(--color-text-muted);
    font-size: var(--text-xs);
    font-weight: 700;
    padding-top: 2px;
}

/* --------------------------------------------------------------------------
   06B. WHAT I BUILD // CAPABILITIES SECTION
   -------------------------------------------------------------------------- */
.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-24);
    margin-top: var(--space-32);
}

.capability-card {
    background: var(--color-bg-surface);
    border: 1.5px solid var(--color-border-structural);
    border-radius: var(--radius-card);
    padding: var(--space-32);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: var(--space-20);
    transition: all var(--motion-interface);
}

.capability-card:hover {
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.capability-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.capability-idx,
.capability-badge {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-accent);
    font-weight: 700;
    letter-spacing: 0.08em;
}

.capability-icon {
    font-size: var(--text-xl);
}

.capability-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-8);
}

.capability-desc {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.capability-meta-pills,
.capability-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-6);
    border-top: 1px solid var(--color-border-subtle);
    padding-top: var(--space-16);
}

.cap-meta-tag {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--color-text-muted);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border-subtle);
    padding: 2px 8px;
    border-radius: var(--radius-chip);
}

[data-theme="light"] .cap-meta-tag {
    background: rgba(0, 0, 0, 0.03);
}

/* --------------------------------------------------------------------------
   07. FLAGSHIP SYSTEMS & REFINED BRUTALIST LIST
   -------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------
   07. SELECTED SYSTEMS & EDITORIAL SPATIAL ARCHITECTURE (PHASE 04)
   Aesthetic: Apple Spatial Restraint × Refined Brutalist Rigor
   -------------------------------------------------------------------------- */
.selected-systems-section {
    position: relative;
    padding: var(--space-64) 0;
}

.systems-editorial-flow {
    display: flex;
    flex-direction: column;
    gap: var(--space-64);
    margin-top: var(--space-48);
}

/* Base System Container */
.system-node-item {
    background: var(--color-bg-surface);
    border: 1.5px solid var(--color-border-structural);
    border-radius: var(--radius-card);
    position: relative;
    overflow: hidden;
    transition: border-color var(--motion-interface), box-shadow var(--motion-interface), transform var(--motion-interface);
}

.system-node-item:hover {
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-lg);
}

/* Flagship Large Asymmetric Layout */
.system-flagship-large {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--space-40);
    padding: var(--space-48);
    align-items: stretch;
}

.system-flagship-large.reverse-layout {
    grid-template-columns: 0.85fr 1.15fr;
}

/* System Header Meta */
.system-meta-header {
    display: flex;
    align-items: center;
    gap: var(--space-12);
    margin-bottom: var(--space-16);
    flex-wrap: wrap;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
}

.system-index-tag {
    font-weight: 700;
    letter-spacing: 0.08em;
    padding: var(--space-2) var(--space-8);
    border-radius: var(--radius-chip);
    background: var(--color-bg-base);
    border: 1.5px solid var(--color-border-subtle);
    color: var(--color-text-secondary);
}

.system-taxonomy-badge {
    color: var(--color-accent);
    background: var(--color-accent-subtle);
    border: 1.5px solid var(--color-accent-border);
    padding: var(--space-2) var(--space-8);
    border-radius: var(--radius-chip);
    font-weight: 600;
    letter-spacing: 0.06em;
}

.system-role-tag {
    color: var(--color-text-muted);
    letter-spacing: 0.04em;
}

.system-status-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--space-6);
    margin-inline-start: auto;
    font-size: var(--text-2xs);
    font-weight: 700;
    letter-spacing: 0.08em;
}

/* System Typography */
.system-name-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--color-text-primary);
    line-height: 1.25;
    margin-bottom: var(--space-12);
}

.system-summary-lead {
    color: var(--color-text-primary);
    font-size: var(--text-md);
    font-weight: 500;
    line-height: 1.7;
    margin-bottom: var(--space-12);
}

.system-desc-body {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    line-height: 1.8;
    margin-bottom: var(--space-24);
}

/* Systems Highlights List */
.system-highlights-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
    margin-bottom: var(--space-24);
}

.system-highlight-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-8);
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    line-height: 1.6;
    font-family: var(--font-sans);
}

.system-highlight-item .hi-bullet {
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    margin-top: 1px;
}

/* Metrics & Telemetry Row */
.system-metrics-matrix {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: var(--space-12);
    margin-bottom: var(--space-24);
    background: var(--color-bg-base);
    border: 1.5px solid var(--color-border-subtle);
    padding: var(--space-16);
    border-radius: var(--radius-card);
}

.metric-cell {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.metric-cell .metric-label {
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    color: var(--color-text-muted);
    letter-spacing: 0.08em;
}

.metric-cell .metric-value {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-text-primary);
}

/* Tech Tags Cluster */
.system-tech-pills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-6);
    margin-bottom: var(--space-24);
}

.tech-pill {
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    color: var(--color-text-secondary);
    background: var(--color-bg-subtle);
    border: 1px solid var(--color-border-subtle);
    padding: var(--space-2) var(--space-8);
    border-radius: var(--radius-chip);
    letter-spacing: 0.04em;
}

/* Project Card Action Row */
.project-action-row {
    display: flex;
    align-items: center;
    gap: var(--space-12);
    flex-wrap: wrap;
    margin-top: var(--space-20);
}

.project-action-row .btn {
    min-height: 42px;
}

/* Asymmetric Spatial Duo Grid (Mid-Size Projects) */
.systems-spatial-duo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-32);
}

.system-node-mid {
    padding: var(--space-36);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* Architectural Interactive Preview Hint Panels */
.system-preview-pane {
    background: var(--color-bg-base);
    border: 1.5px solid var(--color-border-structural);
    border-radius: var(--radius-card);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--space-20);
    position: relative;
    min-height: 280px;
    overflow: hidden;
}

.preview-pane-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-border-subtle);
    padding-bottom: var(--space-10);
    margin-bottom: var(--space-16);
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    color: var(--color-text-muted);
    letter-spacing: 0.08em;
}

.preview-interactive-stage {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    min-height: 180px;
}

.preview-caption-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--color-border-subtle);
    padding-top: var(--space-10);
    margin-top: var(--space-16);
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    color: var(--color-text-muted);
}

/* Specific Preview Visual Hints */
.molecule-hint-svg {
    width: 100%;
    max-height: 160px;
}

.pipeline-hint-track {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: var(--space-4);
    overflow-x: auto;
    padding: var(--space-8) 0;
}

.pipeline-stage-pill {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-chip);
    padding: var(--space-6) var(--space-8);
    font-family: var(--font-mono);
    font-size: 0.62rem;
    min-width: 58px;
    text-align: center;
}

.pipeline-stage-pill.active {
    border-color: var(--accent-mazut);
    color: var(--accent-mazut);
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.2);
}

.chaos-canvas-hint {
    width: 100%;
    height: 160px;
    background: rgba(0, 0, 0, 0.4);
    border-radius: var(--radius-card);
    border: 1px solid rgba(255, 51, 102, 0.2);
}

.crypto-stream-box {
    width: 100%;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(240, 185, 11, 0.25);
    padding: var(--space-12);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    border-radius: var(--radius-chip);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.agent-graph-container {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-8);
    align-items: center;
    padding: var(--space-12) 0;
}

.agent-graph-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border-structural);
    border-radius: var(--radius-chip);
    padding: var(--space-8) var(--space-4);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    text-align: center;
    position: relative;
    transition: all var(--motion-micro);
}

.agent-graph-node.core-node {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: var(--color-accent-subtle);
    font-weight: 700;
}

.agent-graph-link {
    text-align: center;
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    animation: flowPulse 2s infinite ease-in-out;
}

@keyframes flowPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* Refined Apple-Brutalist Border & Surface Treatment for Project Nodes */
.border-pharma { 
    border-inline-start: 3px solid var(--accent-pharma); 
}
.border-pharma:hover {
    border-color: rgba(0, 229, 153, 0.45);
}

.border-mazut { 
    border-inline-start: 3px solid var(--accent-mazut); 
}
.border-mazut:hover {
    border-color: rgba(0, 212, 255, 0.45);
}

.border-chaos { 
    border-inline-start: 3px solid var(--accent-chaos); 
}
.border-chaos:hover {
    border-color: rgba(255, 51, 102, 0.45);
}

.border-zarnegar { 
    border-inline-start: 3px solid var(--accent-zarnegar); 
}
.border-zarnegar:hover {
    border-color: rgba(240, 185, 11, 0.45);
}

.border-agent { 
    border-inline-start: 3px solid var(--color-accent); 
}
.border-agent:hover {
    border-color: rgba(0, 229, 153, 0.45);
}

/* Work View Mode & Filtering System */
.work-controls-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-20);
    margin: var(--space-32) 0 var(--space-40);
    padding-bottom: var(--space-20);
    border-bottom: 1px solid var(--color-border-structural);
}

.filter-pills-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-8);
}

.filter-pill-btn {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border-subtle);
    padding: var(--space-6) var(--space-12);
    border-radius: var(--radius-chip);
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--motion-micro);
}

.filter-pill-btn:hover {
    color: var(--color-text-primary);
    border-color: var(--color-border-strong);
}

.filter-pill-btn.active {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: var(--color-accent-subtle);
    font-weight: 700;
}

.view-mode-toggle-group {
    display: flex;
    background: var(--color-bg-base);
    border: 1px solid var(--color-border-structural);
    padding: 3px;
    border-radius: var(--radius-control);
    gap: 2px;
}

.btn-view-mode {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    padding: var(--space-6) var(--space-12);
    border-radius: var(--radius-chip);
    cursor: pointer;
    transition: all var(--motion-micro);
}

.btn-view-mode:hover {
    color: var(--color-text-primary);
}

.btn-view-mode.active {
    color: var(--color-bg-base);
    background: var(--color-accent);
    font-weight: 700;
}

/* Empty filter state */
.empty-filter-state {
    display: none;
    text-align: center;
    padding: var(--space-64) var(--space-32);
    background: var(--color-bg-surface);
    border: 1px dashed var(--color-border-structural);
    border-radius: var(--radius-card);
    margin: var(--space-32) 0;
}

.empty-filter-state.visible {
    display: block;
}

.empty-filter-code {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-8);
}

.empty-filter-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    color: var(--color-text-primary);
    margin-bottom: var(--space-16);
}

/* Reusable System Architecture Panel Component */
.system-architecture-panel {
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border-structural);
    border-radius: var(--radius-card);
    padding: var(--space-32);
    margin: var(--space-32) 0;
}

.arch-panel-title {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-accent);
    letter-spacing: 0.12em;
    margin-bottom: var(--space-16);
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.arch-flow-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-16);
    margin: var(--space-20) 0;
}

.arch-node-card {
    background: var(--color-bg-base);
    border: 1px solid var(--color-border-subtle);
    padding: var(--space-16);
    border-radius: var(--radius-control);
}

.arch-node-name {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-6);
}

.arch-node-desc {
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    line-height: 1.6;
}


/* --------------------------------------------------------------------------
   08. PROJECT INDEX & ENGINEERING SPEC TABLE
   -------------------------------------------------------------------------- */
.index-table-wrapper {
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border-structural);
    border-radius: var(--radius-card);
    overflow-x: auto;
}

.index-table {
    width: 100%;
    border-collapse: collapse;
    text-align: right;
    font-size: var(--text-sm);
}

.index-table th {
    background: var(--color-bg-elevated);
    padding: var(--space-16) var(--space-20);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border-structural);
    letter-spacing: 0.05em;
}

.index-table td {
    padding: var(--space-16) var(--space-20);
    border-bottom: 1px solid var(--color-border-subtle);
    color: var(--color-text-secondary);
}

.index-table tr:last-child td {
    border-bottom: none;
}

.index-table tr:hover td {
    background: var(--color-bg-subtle);
    color: var(--color-text-primary);
}

.badge-live {
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;
}

.badge-audit {
    color: var(--accent-zarnegar);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;
}

.table-link {
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 600;
}

.table-link:hover {
    color: var(--color-text-primary);
    text-decoration: underline;
}

.table-tag {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   09. CASE STUDY NAVIGATION BAR (Bottom Project-to-Project Router)
   -------------------------------------------------------------------------- */
.case-nav-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--color-border-structural);
    padding-top: var(--space-32);
    margin-top: var(--space-64);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
}

.case-nav-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-8);
    color: var(--color-text-secondary);
    font-weight: 600;
}

.case-nav-link:hover {
    color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   10. CONTACT SECTION — REAL FORM & DIRECT LINKS
   -------------------------------------------------------------------------- */
.contact-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--space-64);
    align-items: start;
    max-width: var(--container-editorial);
}

.contact-text h2 {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-16);
}

.contact-text p {
    color: var(--color-text-secondary);
    font-size: var(--text-base);
    line-height: 1.8;
    margin-bottom: var(--space-32);
}

.contact-direct-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
    margin-top: var(--space-24);
}

.contact-direct-link {
    display: flex;
    align-items: center;
    gap: var(--space-12);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: color var(--motion-micro);
}

.contact-direct-link:hover {
    color: var(--color-accent);
}

.contact-link-icon {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    min-width: 24px;
}

/* Enhanced Direct Channels Block (Touch targets >= 48px) */
.contact-channels-block {
    margin-top: var(--space-28);
    display: flex;
    flex-direction: column;
    gap: var(--space-16);
}

.contact-channels-header {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-accent);
    letter-spacing: 0.08em;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.contact-channels-header::before {
    content: "";
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
}

.contact-channels-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-10);
}

.contact-channel-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-16);
    padding: var(--space-12) var(--space-16);
    min-height: 52px;
    background: var(--color-bg-surface);
    border: 1.5px solid var(--color-border-structural);
    border-radius: var(--radius-control);
    color: var(--color-text-primary);
    text-decoration: none;
    transition: border-color var(--motion-micro), transform var(--motion-micro), background var(--motion-micro);
}

.contact-channel-card:hover,
.contact-channel-card:focus-visible {
    border-color: var(--color-accent);
    background: var(--color-bg-elevated);
    transform: translateX(-3px);
    outline: none;
}

[dir="ltr"] .contact-channel-card:hover,
[dir="ltr"] .contact-channel-card:focus-visible {
    transform: translateX(3px);
}

.channel-card-icon {
    font-size: var(--text-base);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    background: var(--color-bg-base);
    border: 1px solid var(--color-border-subtle);
    flex-shrink: 0;
}

.channel-card-body {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
}

.channel-card-label {
    font-family: var(--font-sans);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.channel-card-value {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-primary);
}

.channel-card-action {
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    transition: color var(--motion-micro), transform var(--motion-micro);
}

.contact-channel-card:hover .channel-card-action {
    color: var(--color-accent);
}

.direct-contact-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-12);
    margin-top: var(--space-8);
}

.direct-contact-btn {
    min-height: 48px;
    flex: 1;
    min-width: 180px;
    justify-content: center;
}

/* Contact Form */
.contact-form-panel {
    background: var(--color-bg-surface);
    border: 1.5px solid var(--color-border-structural);
    border-radius: var(--radius-card);
    padding: var(--space-32);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-16);
}

.contact-form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.contact-form-label {
    font-family: var(--font-sans);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-text-secondary);
    letter-spacing: 0.02em;
}

.contact-form-input,
.contact-form-select,
.contact-form-textarea {
    width: 100%;
    font-family: var(--font-sans);
    font-size: 16px; /* iOS auto-zoom prevention */
    color: var(--color-text-primary);
    background: var(--color-bg-elevated);
    border: 1.5px solid var(--color-border-structural);
    border-radius: var(--radius-control);
    padding: var(--space-12) var(--space-16);
    min-height: 52px;
    outline: none;
    transition: border-color var(--motion-micro), background var(--motion-micro);
    appearance: none;
    -webkit-appearance: none;
}

.contact-form-input::placeholder,
.contact-form-textarea::placeholder {
    color: var(--color-text-muted);
}

.contact-form-input:focus,
.contact-form-select:focus,
.contact-form-textarea:focus {
    border-color: var(--color-accent);
    background: var(--color-bg-surface);
    box-shadow: var(--glow-accent);
}

.contact-form-textarea {
    min-height: 120px;
    resize: vertical;
    line-height: 1.7;
}

.contact-form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23565b66' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: left var(--space-16) center;
    padding-inline-start: var(--space-40);
}

[dir="rtl"] .contact-form-select {
    background-position: right var(--space-16) center;
}

.contact-form-submit {
    width: 100%;
    margin-top: var(--space-8);
}

/* Form feedback states */
.contact-form-feedback {
    display: none;
    padding: var(--space-12) var(--space-16);
    border-radius: var(--radius-control);
    font-size: var(--text-sm);
    font-family: var(--font-sans);
}

.contact-form-feedback.success {
    display: block;
    background: var(--color-accent-subtle);
    border: 1.5px solid var(--color-accent-border);
    color: var(--color-accent);
}

.contact-form-feedback.error {
    display: block;
    background: rgba(255, 82, 82, 0.08);
    border: 1.5px solid rgba(255, 82, 82, 0.3);
    color: #e05252;
}

/* Demo / Simulation Integrity Badge */
.demo-integrity-badge {
    display: flex;
    align-items: flex-start;
    gap: var(--space-12);
    background: rgba(240, 185, 11, 0.07);
    border: 1.5px solid rgba(240, 185, 11, 0.30);
    border-radius: var(--radius-card);
    padding: var(--space-16) var(--space-20);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-24);
}

.demo-integrity-badge-icon {
    font-size: var(--text-md);
    flex-shrink: 0;
    margin-top: 1px;
}

.demo-integrity-badge strong {
    color: #d4a30a;
    font-weight: 700;
}

/* Global 4-Column Structured Footer */
#main-footer {
    position: relative;
    z-index: var(--z-content);
    border-top: 1px solid var(--color-border-structural);
    background: var(--color-bg-base);
    padding: var(--space-64) 0 var(--space-32);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-32);
    display: grid;
    grid-template-columns: 1.2fr 1.05fr 1.05fr 1.05fr;
    gap: var(--space-32);
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
}

.footer-title {
    font-family: var(--font-sans);
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: normal;
    margin-bottom: var(--space-8);
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.footer-title::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
}

.footer-brand-name {
    font-family: var(--font-sans);
    font-weight: 700;
    color: var(--color-text-primary);
    font-size: var(--text-base);
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.footer-brand-name .footer-sep {
    color: var(--color-accent);
}

.footer-brand-name .footer-en-name {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.footer-desc {
    color: var(--color-text-muted);
    line-height: 1.7;
    font-size: var(--text-xs);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.footer-links li {
    display: flex;
}

.footer-links a {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-10);
    width: 100%;
    padding: var(--space-8) var(--space-12);
    border-radius: var(--radius-chip);
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: var(--text-xs);
    font-weight: 500;
    line-height: 1.5;
    transition: all var(--motion-micro);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border-structural);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    cursor: pointer;
}

.footer-links a:hover,
.footer-links a:focus-visible {
    color: var(--color-accent);
    background: var(--color-accent-subtle);
    border-color: var(--color-accent-border);
    transform: translateX(-4px);
    box-shadow: 0 2px 8px rgba(0, 229, 153, 0.12);
    outline: none;
}

[dir="ltr"] .footer-links a:hover,
[dir="ltr"] .footer-links a:focus-visible {
    transform: translateX(4px);
}

.footer-links a::after {
    content: "←";
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-accent);
    opacity: 0.75;
    transition: all var(--motion-micro);
    flex-shrink: 0;
}

.footer-links a:hover::after,
.footer-links a:focus-visible::after {
    color: var(--color-accent);
    opacity: 1;
    transform: translateX(-3px);
}

.footer-links a[target="_blank"]::after {
    content: "↗";
}

.footer-links a[download]::after {
    content: "↓";
}

.footer-links a[href^="tel:"]::after {
    content: "📞";
    font-family: inherit;
    font-size: var(--text-2xs);
}

.footer-links .link-val {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--color-accent);
}

.footer-bottom-bar {
    max-width: var(--container-max);
    margin: var(--space-48) auto 0;
    padding: var(--space-20) var(--space-32) 0;
    border-top: 1px solid var(--color-border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-sans);
    letter-spacing: normal;
    font-size: var(--text-2xs);
    color: var(--color-text-muted);
    line-height: 1.8;
}

.footer-bottom-bar div {
    letter-spacing: normal;
}

/* --------------------------------------------------------------------------
   11. 404 PAGE STYLING
   -------------------------------------------------------------------------- */
.error-page-container {
    min-height: calc(85vh - var(--nav-height));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: var(--space-64) var(--space-32);
}

.error-code {
    font-family: var(--font-display);
    font-size: 6rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--space-16);
}

.error-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-16);
}

.error-desc {
    color: var(--color-text-secondary);
    font-size: var(--text-md);
    margin-bottom: var(--space-32);
    line-height: 1.8;
}

/* Breadcrumb Navigation Trail */
.breadcrumb-trail {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    letter-spacing: 0.08em;
    margin-bottom: var(--space-24);
}

.breadcrumb-trail a {
    color: var(--color-text-secondary);
    transition: color var(--motion-micro);
}

.breadcrumb-trail a:hover {
    color: var(--color-accent);
}

.breadcrumb-trail .sep {
    color: var(--color-text-dim);
    user-select: none;
}

.breadcrumb-trail .current {
    color: var(--color-accent);
    font-weight: 600;
}

/* Case Study Bottom Sequential Router */
.case-nav-bar {
    max-width: var(--container-editorial);
    margin: var(--space-64) auto var(--space-48);
    padding: var(--space-24) var(--space-32);
    border-top: 1px solid var(--color-border-structural);
    border-bottom: 1px solid var(--color-border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: 0.06em;
    background: var(--color-bg-subtle);
}

.case-nav-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-8);
    color: var(--color-text-secondary);
    padding: var(--space-8) var(--space-16);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-control);
    transition: all var(--motion-micro);
}

.case-nav-link:hover {
    color: var(--color-accent);
    border-color: var(--color-accent-border);
    background: var(--color-accent-subtle);
}

.case-nav-index {
    color: var(--color-text-muted);
    font-weight: 600;
    padding: var(--space-8) var(--space-16);
    border-radius: var(--radius-control);
    transition: color var(--motion-micro);
}

.case-nav-index:hover {
    color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   12. CENTRALIZED COHERENT RESPONSIVE SYSTEM
   Architecture: Mobile · Tablet · Laptop · Desktop · Large Desktop
   Tested: 320px, 360px, 375px, 390px, 430px, 480px, 600px, 768px, 820px, 
           1024px, 1280px, 1366px, 1440px, 1728px, 1920px, 2560px
   -------------------------------------------------------------------------- */

/* TIER 01: LARGE DESKTOP & ULTRAWIDE (>= 1920px) */
@media (min-width: 1920px) {
    #content, .footer-container, .footer-bottom-bar, .case-body-grid, .case-layout-container {
        max-width: var(--container-wide);
    }
    .hero-layout {
        gap: var(--space-64);
    }
}

/* TIER 02: LAPTOP & COMPACT DESKTOP (<= 1280px) */
@media (max-width: 1280px) {
    .hero-layout {
        gap: var(--space-32);
    }
    .case-body-grid, .case-layout-container {
        grid-template-columns: 240px 1fr;
        gap: var(--space-32);
    }
    .system-flagship-large {
        grid-template-columns: 1.1fr 1fr;
        gap: var(--space-24);
    }
}

/* TIER 03: TABLET LANDSCAPE & COMPACT LAPTOP (<= 1024px) */
@media (max-width: 1024px) {
    .nav-links, .nav-cta-btn {
        display: none;
    }
    #nav-toggle {
        display: flex;
    }
    .hero-layout {
        grid-template-columns: 1fr;
        gap: var(--space-32);
    }
    .hero-core-pane {
        height: 320px;
        order: 0;
        margin: var(--space-16) 0;
    }
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-32);
    }
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-36);
    }
    .system-flagship-large, .system-flagship-large.reverse-layout {
        grid-template-columns: 1fr;
        padding: var(--space-32);
        gap: var(--space-24);
    }
    .systems-spatial-duo {
        grid-template-columns: 1fr;
        gap: var(--space-24);
    }
    .case-body-grid, .case-layout-container {
        grid-template-columns: 1fr;
    }
    .toc-sidebar {
        display: none;
    }
    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-32);
    }
}

/* TIER 04: TABLET PORTRAIT (<= 768px) */
@media (max-width: 768px) {
    #main-nav {
        padding: 0 var(--gutter-mobile);
        height: 56px;
    }
    #content {
        padding: 0 var(--gutter-mobile);
    }
    .hero-stage {
        padding: var(--space-20) 0;
        min-height: auto;
    }
    .hero-identity-pane {
        gap: var(--space-16);
    }
    .hero-meta-top {
        gap: var(--space-8);
    }
    .hero-roles-banner {
        flex-wrap: wrap;
        font-size: var(--text-2xs);
    }
    .hero-statement {
        font-size: var(--text-base);
    }
    .hero-statement strong {
        font-size: 1.05rem;
    }
    .hero-actions-row {
        flex-wrap: wrap;
        gap: var(--space-12);
    }
    .hero-core-pane {
        height: 300px;
        margin: var(--space-16) 0;
        order: 0;
    }
    .hero-telemetry-ribbon {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--space-12);
        padding: var(--space-16);
    }
    .tele-item.scroll-prompt {
        grid-column: span 2;
    }
    .system-node-item {
        padding: var(--space-20);
        border-radius: var(--radius-card);
    }
    .system-flagship-large, .system-flagship-large.reverse-layout {
        padding: var(--space-20);
        gap: var(--space-20);
    }
    .system-meta-header {
        gap: var(--space-8);
        margin-bottom: var(--space-12);
    }
    .system-status-indicator {
        margin-inline-start: 0;
        width: 100%;
        margin-top: var(--space-4);
    }
    .system-name-title {
        font-size: clamp(1.2rem, 5vw, 1.5rem);
    }
    .system-summary-lead {
        font-size: var(--text-sm);
        line-height: 1.65;
    }
    .system-desc-body {
        font-size: var(--text-xs);
        line-height: 1.7;
    }
    .system-metrics-matrix {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-10);
        padding: var(--space-12);
    }
    .system-preview-pane {
        min-height: 220px;
        padding: var(--space-14);
    }
    .preview-interactive-stage {
        min-height: 130px;
    }
    .pipeline-hint-track {
        gap: var(--space-2);
        padding: var(--space-4) 0;
    }
    .pipeline-stage-pill {
        min-width: 48px;
        padding: var(--space-4) var(--space-6);
        font-size: 0.58rem;
    }
    .footer-container {
        grid-template-columns: 1fr;
        gap: var(--space-24);
        padding: 0 var(--gutter-mobile);
    }
    .footer-bottom-bar {
        flex-direction: column;
        gap: var(--space-12);
        text-align: center;
        padding: var(--space-16) var(--gutter-mobile);
    }
    .case-nav-bar {
        flex-direction: column;
        gap: var(--space-16);
        text-align: center;
        padding: var(--space-16);
    }
    .case-header {
        padding: var(--space-12) var(--gutter-mobile);
    }
    .work-controls-bar {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-16);
    }
    .filter-pills-group {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: var(--space-4);
        flex-wrap: nowrap;
    }
    .filter-pill-btn {
        flex-shrink: 0;
    }
    .view-mode-toggle-group {
        align-self: flex-start;
    }
    .bg-grid {
        background-size: 48px 48px;
        opacity: 0.75;
    }
    .hero-core-glow {
        width: 110%;
        height: 110%;
        background: radial-gradient(circle 200px at 50% 50%, rgba(0, 229, 153, 0.065) 0%, transparent 70%);
    }
}

/* TIER 05: PHABLET & WIDE MOBILE (<= 600px) */
@media (max-width: 600px) {
    .system-metrics-matrix {
        grid-template-columns: 1fr;
    }
    .agent-graph-container {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    .agent-graph-link {
        transform: rotate(90deg);
        text-align: center;
    }
    .domain-pills {
        flex-direction: column;
    }
    .d-pill {
        text-align: center;
    }
    .c-method {
        flex-direction: column;
        gap: var(--space-4);
    }
    .c-label {
        min-width: 0;
    }
}

/* TIER 06: STANDARD MOBILE (<= 480px) */
@media (max-width: 480px) {
    .hero-name-heading, .hero-name-title {
        font-size: clamp(1.8rem, 8vw, 2.4rem);
    }
    .name-line-fa {
        font-size: clamp(2rem, 7vw, 2.4rem);
    }
    .name-line-en {
        font-size: 0.75rem;
    }
    .hero-actions-row {
        flex-direction: column;
        width: 100%;
    }
    .hero-actions-row .btn {
        width: 100%;
        justify-content: center;
    }
    .hero-proof-strip {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-6);
        width: 100%;
    }
    .proof-tags {
        flex-wrap: wrap;
    }
    .hero-telemetry-ribbon {
        grid-template-columns: 1fr;
    }
    .tele-item.scroll-prompt {
        grid-column: 1;
    }
    .project-action-row {
        flex-direction: column;
        width: 100%;
    }
    .project-action-row .btn {
        width: 100%;
        justify-content: center;
    }
    .terminal-messages-stream {
        height: 300px;
    }
    .agent-msg {
        max-width: 100%;
    }
    .agent-product-cards-grid {
        grid-template-columns: 1fr;
    }
    .terminal-chips-rail {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: var(--space-4);
    }
    .term-chip {
        flex-shrink: 0;
    }
    .btn, button, input, select, textarea, .nav-cta-btn, .term-chip, .filter-pill-btn, .mode-btn {
        min-height: 44px;
    }
    input, select, textarea, .form-input, .form-textarea, .form-select {
        font-size: 16px !important;
    }
    .nav-brand-group .logo-name {
        font-size: 0.7rem;
    }
    .lang-switch {
        display: none;
    }
    .bg-grid {
        background-size: 36px 36px;
        opacity: 0.55;
    }
    .bg-noise {
        opacity: 0.018;
    }
    .hero-core-glow {
        background: radial-gradient(circle 150px at 50% 50%, rgba(0, 229, 153, 0.055) 0%, transparent 70%);
    }
}

/* TIER 07: ULTRA-COMPACT MOBILE (<= 360px: iPhone SE, Galaxy Fold cover) */
@media (max-width: 360px) {
    #main-nav {
        padding: 0 var(--space-8);
    }
    #content {
        padding: 0 var(--space-8);
    }
    .hero-name-heading, .hero-name-title {
        font-size: 1.65rem;
    }
    .name-line-fa {
        font-size: 1.75rem;
    }
    .name-line-en {
        font-size: 0.7rem;
    }
    .hero-core-pane {
        height: 220px;
    }
    .system-node-item {
        padding: var(--space-14);
    }
    .btn {
        padding: var(--space-10) var(--space-14);
        font-size: var(--text-xs);
    }
}

/* TIER 08: MOBILE LANDSCAPE (max-height <= 520px) */
@media (orientation: landscape) and (max-height: 520px) {
    .hero-stage {
        min-height: auto;
        padding: var(--space-16) 0;
    }
    .hero-core-pane {
        height: 200px;
    }
    #mobile-menu {
        padding: var(--space-16);
    }
    .mobile-menu-links {
        gap: var(--space-8);
    }
    .terminal-messages-stream {
        height: 200px;
    }
}

/* --------------------------------------------------------------------------
   13. ACCESSIBILITY: REDUCED MOTION SUPPORT
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .focus-pulse, .f-ring, .scroll-prompt .tele-v {
        animation: none !important;
    }
}

/* ==========================================================================
   14. FUNCTIONAL AI AGENT TERMINAL COMPONENT (PHASE 11)
   Aesthetic: Refined Brutalism × ReAct Function Calling Console
   ========================================================================== */
.agent-terminal-wrapper {
    background: #090c12;
    border: 1px solid var(--color-border-structural);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
    margin: var(--space-24) 0;
}

[data-theme="light"] .agent-terminal-wrapper {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.12);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

/* Terminal Header */
.terminal-header-bar {
    background: rgba(0, 0, 0, 0.35);
    border-bottom: 1px solid var(--color-border-subtle);
    padding: var(--space-10) var(--space-16);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-8);
}

[data-theme="light"] .terminal-header-bar {
    background: #f8fafc;
}

.terminal-brand-group {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.terminal-status-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--color-accent-glow);
}

.terminal-title {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: 0.06em;
}

.terminal-badge {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--color-accent);
    background: var(--color-accent-subtle);
    border: 1px solid var(--color-accent-border);
    padding: 2px 6px;
    border-radius: var(--radius-chip);
}

.terminal-telemetry-group {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    color: var(--color-text-muted);
}

.tele-tag {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border-subtle);
    padding: 2px 6px;
    border-radius: var(--radius-chip);
}

.btn-terminal-clear {
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-control);
    padding: 2px 8px;
    transition: all var(--motion-micro);
}

.btn-terminal-clear:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

/* Chat Stream */
.terminal-messages-stream {
    height: 380px;
    overflow-y: auto;
    padding: var(--space-16);
    display: flex;
    flex-direction: column;
    gap: var(--space-16);
    background: rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .terminal-messages-stream {
    background: #fdfdfd;
}

.agent-msg {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-width: 85%;
}

.agent-msg.bot {
    align-self: flex-start;
}

.agent-msg.user {
    align-self: flex-end;
}

.msg-author-tag {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    font-family: var(--font-mono);
    font-size: 0.68rem;
}

.bot-badge {
    color: var(--color-accent);
    font-weight: 700;
}

.user-badge {
    color: #00d4ff;
    font-weight: 700;
}

.msg-time {
    color: var(--color-text-muted);
    font-size: 0.62rem;
}

.msg-bubble {
    padding: var(--space-12) var(--space-16);
    border-radius: var(--radius-card);
    font-size: var(--text-sm);
    line-height: 1.7;
    position: relative;
}

.agent-msg.bot .msg-bubble {
    background: #111520;
    border: 1px solid var(--color-border-structural);
    color: var(--color-text-primary);
    border-top-right-radius: var(--radius-none);
}

[data-theme="light"] .agent-msg.bot .msg-bubble {
    background: #f1f5f9;
    border-color: rgba(0, 0, 0, 0.08);
}

.agent-msg.user .msg-bubble {
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.3);
    color: #00d4ff;
    border-top-left-radius: var(--radius-none);
}

/* Embedded Cards in Message */
.msg-embedded-cards {
    margin-top: var(--space-8);
    width: 100%;
}

.agent-product-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--space-10);
    margin-top: var(--space-6);
}

.agent-product-card {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--color-border-structural);
    border-radius: var(--radius-card);
    padding: var(--space-12);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

[data-theme="light"] .agent-product-card {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.12);
}

.product-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.68rem;
}

.product-badge {
    color: var(--color-accent);
    background: var(--color-accent-subtle);
    padding: 1px 6px;
    border-radius: var(--radius-chip);
}

.product-rating {
    color: #ffaa00;
}

.product-card-title {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1.5;
}

.product-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: var(--space-6);
    margin-top: 4px;
}

.product-price {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-accent);
}

.product-stock {
    font-size: 0.68rem;
    color: var(--color-text-muted);
}

.product-stock.low {
    color: #ffaa00;
}

/* Order Tracking Card */
.agent-order-card {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(0, 229, 153, 0.25);
    border-radius: var(--radius-card);
    padding: var(--space-14);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    font-size: var(--text-xs);
}

.order-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: var(--space-8);
    margin-bottom: 4px;
}

.order-id {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--color-accent);
}

.order-status-badge {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: #00d4ff;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.25);
    padding: 2px 6px;
    border-radius: var(--radius-chip);
}

.order-card-row {
    display: flex;
    gap: var(--space-8);
    color: var(--color-text-secondary);
}

.order-k {
    font-family: var(--font-mono);
    color: var(--color-text-muted);
    min-width: 90px;
}

/* Escalation Card */
.agent-escalation-card {
    background: rgba(255, 170, 0, 0.06);
    border: 1px solid rgba(255, 170, 0, 0.3);
    border-radius: var(--radius-card);
    padding: var(--space-14);
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.escalation-header {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    color: #ffaa00;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;
}

.escalation-details {
    display: flex;
    gap: var(--space-16);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-text-secondary);
    flex-wrap: wrap;
}

.escalation-prompt-box {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    font-style: italic;
    background: rgba(0, 0, 0, 0.2);
    padding: 6px 10px;
    border-radius: var(--radius-control);
}

.btn-simulate-admin-reply {
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    color: var(--color-accent);
    background: var(--color-accent-subtle);
    border: 1px solid var(--color-accent-border);
    padding: 6px 12px;
    border-radius: var(--radius-control);
    cursor: pointer;
    transition: all var(--motion-micro);
    margin-top: var(--space-6);
}

.btn-simulate-admin-reply:hover {
    background: var(--color-accent);
    color: #000000;
}

/* Chips Rail */
.terminal-chips-rail {
    display: flex;
    gap: var(--space-8);
    padding: var(--space-10) var(--space-16);
    border-top: 1px solid var(--color-border-subtle);
    background: rgba(0, 0, 0, 0.2);
    overflow-x: auto;
    white-space: nowrap;
}

.term-chip {
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    color: var(--color-text-secondary);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-chip);
    padding: 4px 10px;
    cursor: pointer;
    transition: all var(--motion-micro);
    flex-shrink: 0;
}

.term-chip:hover {
    color: var(--color-accent);
    border-color: var(--color-accent-border);
    background: var(--color-accent-subtle);
}

/* Input Bar */
.terminal-input-bar {
    display: flex;
    border-top: 1px solid var(--color-border-structural);
    background: #06090e;
    padding: var(--space-8);
}

[data-theme="light"] .terminal-input-bar {
    background: #f8fafc;
}

.terminal-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    color: var(--color-text-primary);
    padding: var(--space-8) var(--space-12);
}

.terminal-send-btn {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;
    color: #000000;
    background: var(--color-accent);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-control);
    padding: var(--space-8) var(--space-18);
    display: inline-flex;
    align-items: center;
    gap: var(--space-6);
    cursor: pointer;
    transition: all var(--motion-micro);
}

.terminal-send-btn:hover {
    box-shadow: 0 0 12px var(--color-accent-glow);
}

/* Inspector Drawer */
.terminal-inspector-panel {
    border-top: 1px solid var(--color-border-structural);
    background: #030508;
}

.inspector-header {
    padding: var(--space-8) var(--space-16);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    color: var(--color-text-muted);
}

.inspector-header:hover {
    color: var(--color-text-primary);
}

.inspector-body {
    border-top: 1px solid var(--color-border-subtle);
    padding: var(--space-12) var(--space-16);
}

.inspector-tabs {
    display: flex;
    gap: var(--space-12);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    margin-bottom: var(--space-8);
}

.insp-tab {
    color: var(--color-text-muted);
    cursor: pointer;
    padding-bottom: 2px;
}

.insp-tab.active {
    color: var(--color-accent);
    border-bottom: 1px solid var(--color-accent);
}

.inspector-code {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    line-height: 1.6;
    color: #8fa1b8;
    background: #000204;
    padding: var(--space-10);
    border-radius: var(--radius-control);
    direction: ltr;
    text-align: left;
    overflow-x: auto;
}

/* ==========================================================================
   FINAL LANDING PASS: MAGIC UI BENTO, SPOTLIGHT & EDITORIAL ARCHITECTURE
   ========================================================================== */

/* --------------------------------------------------------------------------
   01. HERO INTERACTIVE GRID & PERSIAN-FIRST REFINEMENTS
   -------------------------------------------------------------------------- */
.hero-interactive-grid {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 50% 40%, rgba(0, 229, 153, 0.04) 0%, transparent 65%),
        linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 100% 100%, 48px 48px, 48px 48px;
    mask-image: radial-gradient(ellipse 70% 65% at 50% 45%, black 40%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 70% 65% at 50% 45%, black 40%, transparent 80%);
    pointer-events: none;
    z-index: 0;
}

[data-theme="light"] .hero-interactive-grid {
    background-image: 
        radial-gradient(circle at 50% 40%, rgba(0, 229, 153, 0.06) 0%, transparent 65%),
        linear-gradient(to right, rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
}

.hero-role-row {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-top: var(--space-6);
    margin-bottom: var(--space-14);
}

.role-primary {
    font-family: var(--font-sans);
    font-size: var(--text-md);
    font-weight: 600;
    color: var(--color-text-primary);
}

.role-secondary {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    letter-spacing: 0.08em;
}

.hero-discipline-strip {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-10) var(--space-16);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border-structural);
    border-radius: var(--radius-control);
    width: fit-content;
    margin-top: var(--space-8);
    margin-bottom: var(--space-18);
}

.discipline-items {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    font-family: var(--font-sans);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-text-primary);
    flex-wrap: wrap;
}

.discipline-dot {
    color: var(--color-accent);
    font-weight: 700;
}

.discipline-en-tokens {
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    color: var(--color-text-muted);
    letter-spacing: 0.06em;
    display: flex;
    gap: var(--space-6);
    flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   02. MAGIC UI ASYMMETRIC BENTO GRID & SPOTLIGHT
   -------------------------------------------------------------------------- */
.section-header-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: var(--space-16);
    margin-bottom: var(--space-32);
}

.section-subtitle {
    color: var(--color-text-secondary);
    font-size: var(--text-md);
    max-width: 680px;
    line-height: 1.7;
    margin-top: var(--space-6);
}

.label-en {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-inline-start: var(--space-8);
    font-weight: 400;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-24);
    margin-top: var(--space-24);
}

.bento-card {
    position: relative;
    background: var(--color-bg-surface);
    border: 1.5px solid var(--color-border-structural);
    border-radius: var(--radius-card);
    overflow: hidden;
    transition: border-color var(--motion-interface), box-shadow var(--motion-interface), transform var(--motion-interface);
    display: flex;
    flex-direction: column;
}

@media (hover: hover) and (pointer: fine) {
    .bento-card:hover {
        border-color: var(--color-border-strong);
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }
}

.bento-spotlight {
    position: absolute;
    inset: 0;
    background: radial-gradient(420px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(0, 229, 153, 0.08), transparent 70%);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

[data-theme="light"] .bento-spotlight {
    background: radial-gradient(420px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(0, 180, 120, 0.10), transparent 70%);
}

.bento-card:hover .bento-spotlight {
    opacity: 1;
}

.bento-span-2 {
    grid-column: span 2;
}

.bento-inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--space-32);
    padding: var(--space-32);
    align-items: stretch;
    height: 100%;
}

.bento-inner.reverse-bento {
    grid-template-columns: 0.85fr 1.15fr;
}

.bento-inner-col {
    position: relative;
    z-index: 2;
    padding: var(--space-28);
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* --------------------------------------------------------------------------
   03. WHAT I BUILD — EDITORIAL BENTO CAPABILITIES
   -------------------------------------------------------------------------- */
.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-24);
    margin-top: var(--space-24);
}

.capability-card.bento-card {
    padding: var(--space-28);
    position: relative;
    z-index: 2;
}

.capability-lead {
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1.6;
    margin-bottom: var(--space-8);
}

/* --------------------------------------------------------------------------
   04. PROBLEM -> SYSTEM ANIMATED BEAM PROCESS PIPELINE
   -------------------------------------------------------------------------- */
.process-section {
    padding: var(--space-64) 0;
    position: relative;
}

.process-banner {
    background: var(--color-bg-surface);
    border: 1.5px solid var(--color-border-structural);
    border-radius: var(--radius-card);
    padding: var(--space-32) var(--space-40);
    margin-bottom: var(--space-32);
    position: relative;
    overflow: hidden;
}

.process-quote {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text-primary);
    margin: var(--space-8) 0;
    line-height: 1.7;
}

.process-sub {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.beam-pipeline-container {
    position: relative;
    padding: var(--space-20) 0;
    overflow: hidden;
}

.beam-svg {
    position: absolute;
    top: 36px;
    left: 0;
    width: 100%;
    height: 48px;
    pointer-events: none;
    z-index: 1;
}

.beam-track {
    stroke: var(--color-border-structural);
    stroke-width: 2;
    stroke-dasharray: 4 4;
    fill: none;
}

.beam-pulse {
    stroke: url(#beam-grad);
    stroke-width: 3.5;
    stroke-dasharray: 80 160;
    fill: none;
    animation: beamPulseAnim 4.5s linear infinite;
}

@keyframes beamPulseAnim {
    from { stroke-dashoffset: 240; }
    to { stroke-dashoffset: -240; }
}

.beam-nodes-row {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-16);
}

.beam-node-card {
    background: var(--color-bg-surface);
    border: 1.5px solid var(--color-border-structural);
    border-radius: var(--radius-control);
    padding: var(--space-20) var(--space-16);
    display: flex;
    flex-direction: column;
    transition: border-color var(--motion-interface), transform var(--motion-interface);
}

.beam-node-card.active, .beam-node-card:hover {
    border-color: var(--color-accent-border);
    box-shadow: var(--shadow-md);
}

.node-marker {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-10);
}

.node-step {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-accent);
    background: var(--color-accent-subtle);
    padding: 2px 8px;
    border-radius: var(--radius-chip);
    border: 1px solid var(--color-accent-border);
}

.node-pulse-ring {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
    box-shadow: 0 0 6px var(--color-accent);
}

.node-title {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 2px;
}

.node-en {
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    color: var(--color-text-muted);
    letter-spacing: 0.08em;
    margin-bottom: var(--space-8);
}

.node-desc {
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* --------------------------------------------------------------------------
   05. SYSTEM STUDIO CONFIGURATOR PREVIEW
   -------------------------------------------------------------------------- */
.system-studio-section {
    padding: var(--space-48) 0;
    position: relative;
}

.anchor-alias {
    position: absolute;
    top: -80px;
}

.studio-layout-card {
    padding: var(--space-40);
}

.studio-content-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--space-40);
    align-items: center;
    position: relative;
    z-index: 2;
}

.studio-lead {
    font-size: var(--text-md);
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1.7;
    margin-bottom: var(--space-12);
}

.studio-sub {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-20);
}

.studio-guarantees {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
    margin-bottom: var(--space-28);
}

.guarantee-item {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
}

.g-bullet {
    color: var(--color-accent);
    font-weight: 700;
    font-family: var(--font-mono);
}

.studio-preview-pane {
    background: var(--color-bg-base);
    border: 1px solid var(--color-border-structural);
    border-radius: var(--radius-control);
    padding: var(--space-24);
}

.studio-flow-visual {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.flow-step-card {
    display: flex;
    align-items: center;
    gap: var(--space-12);
    padding: var(--space-10) var(--space-14);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-control);
}

.flow-step-card.active {
    border-color: var(--color-accent-border);
    background: var(--color-accent-subtle);
}

.flow-step-num {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--color-accent);
    font-size: var(--text-sm);
}

.flow-step-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.flow-step-info strong {
    font-size: var(--text-xs);
    color: var(--color-text-primary);
}

.flow-step-info span {
    font-size: var(--text-2xs);
    color: var(--color-text-secondary);
}

.flow-step-arrow {
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--text-xs);
    line-height: 1;
}

.studio-preview-footer {
    margin-top: var(--space-16);
    padding-top: var(--space-12);
    border-top: 1px solid var(--color-border-subtle);
    font-size: var(--text-2xs);
    color: var(--color-text-muted);
    text-align: center;
    line-height: 1.6;
}

/* --------------------------------------------------------------------------
   06. RESEARCH PILLARS GRID & CREDIBILITY DOWNLOADS
   -------------------------------------------------------------------------- */
.resume-downloads-row {
    display: flex;
    gap: var(--space-12);
    flex-wrap: wrap;
    align-items: center;
}

.research-pillars-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-20);
    margin-top: var(--space-24);
}

.research-pillar-card {
    padding: var(--space-24);
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* --------------------------------------------------------------------------
   07. CONTACT FORM ENHANCEMENT & DIRECT LINKS
   -------------------------------------------------------------------------- */
.label-en-hint {
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    color: var(--color-text-muted);
    margin-inline-start: var(--space-6);
    font-weight: 400;
}

.highlight-link {
    background: var(--color-accent-subtle);
    border: 1px solid var(--color-accent-border);
    border-radius: var(--radius-control);
    padding: var(--space-8) var(--space-12) !important;
    color: var(--color-accent) !important;
}

.logo-sep, .footer-sep {
    color: var(--color-accent);
    font-weight: 700;
}

/* --------------------------------------------------------------------------
   08. RESPONSIVE HARDENING & VIEWPORT REFINEMENTS
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .bento-inner, .bento-inner.reverse-bento {
        grid-template-columns: 1fr;
        gap: var(--space-24);
    }
    .studio-content-grid {
        grid-template-columns: 1fr;
    }
    .beam-nodes-row {
        grid-template-columns: repeat(3, 1fr);
    }
    .beam-svg {
        display: none;
    }
    .research-pillars-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .bento-grid {
        grid-template-columns: 1fr;
    }
    .bento-span-2 {
        grid-column: span 1;
    }
    .capabilities-grid {
        grid-template-columns: 1fr;
    }
    .beam-nodes-row {
        grid-template-columns: 1fr;
    }
    .beam-svg {
        display: none;
    }
    .bento-inner {
        padding: var(--space-20);
    }
    .bento-inner-col {
        padding: var(--space-20);
    }
    .studio-layout-card {
        padding: var(--space-20);
    }
}

@media (max-width: 480px) {
    .process-banner {
        padding: var(--space-20) var(--space-16);
    }
    .resume-downloads-row {
        flex-direction: column;
        width: 100%;
    }
    .resume-downloads-row .btn {
        width: 100%;
        justify-content: center;
    }
}

/* --------------------------------------------------------------------------
   09. ACCESSIBILITY & REDUCED MOTION GUARDS
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    .beam-pulse {
        animation: none !important;
    }
    .focus-pulse {
        animation: none !important;
    }
    .bento-card, .btn, .nav-link {
        transition: none !important;
        transform: none !important;
    }
    .bento-spotlight {
        display: none !important;
    }
}