/*
Theme Name: voltpik
Theme URI: https://www.voltpik.co.kr/
Author: voltpik
Description: 스마트폰, 노트북, 웨어러블 등 전자기기의 객관적 리뷰와 데이터 기반 구매 가이드를 제공하는 VoltPik 테마
Version: 1.0.1
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: voltpik
*/

/* ========================================
   1. Paperlogy @font-face (CDN)
   ======================================== */
@font-face {
    font-family: 'Paperlogy';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-1Thin.woff2') format('woff2');
    font-weight: 100;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Paperlogy';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-2ExtraLight.woff2') format('woff2');
    font-weight: 200;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Paperlogy';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-3Light.woff2') format('woff2');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Paperlogy';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-4Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Paperlogy';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-5Medium.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Paperlogy';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-6SemiBold.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Paperlogy';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-7Bold.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Paperlogy';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-8ExtraBold.woff2') format('woff2');
    font-weight: 800;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Paperlogy';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-9Black.woff2') format('woff2');
    font-weight: 900;
    font-style: normal;
    font-display: swap;
}

/* ========================================
   2. CSS Variables (Design Tokens)
   ======================================== */
:root {
    --font-primary: 'Paperlogy', 'Malgun Gothic', 'Apple SD Gothic Neo', sans-serif;

    --color-bg: #000000;
    --color-surface: #171717;
    --color-surface-elevated: #232323;
    --color-text: rgba(255, 255, 255, 0.88);
    --color-text-secondary: rgba(255, 255, 255, 0.78);
    --color-text-muted: rgba(255, 255, 255, 0.5);
    --color-text-inverse: #000000;

    --color-primary: rgb(77, 115, 255);
    --color-accent: rgb(54, 23, 206);
    --color-accent-light: #6b8cff;

    --color-border: rgba(255, 255, 255, 0.1);
    --color-border-hover: rgba(255, 255, 255, 0.2);

    --header-height: 88px;
    --container-max: 1280px;
    --container-padding: 40px;

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-md: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-lg: 0 24px 64px rgba(0,0,0,0.5);

    /* Category Page Extensions */
    --cat-hero-gradient-start: rgb(37, 99, 235);
    --cat-hero-gradient-end: rgb(30, 64, 175);
    --cat-card-radius: 12px;
    --cat-sidebar-width: 320px;
    --cat-meta-color: rgba(255,255,255,0.45);
    --cat-banner-bg: rgba(77, 115, 255, 0.08);
    --cat-banner-border: rgb(77, 115, 255);
}

/* ========================================
   3. Global Reset & Typography
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Paperlogy', 'Malgun Gothic', 'Apple SD Gothic Neo', sans-serif !important;
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    word-break: keep-all;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

h1, h2, h3, h4, h5, h6,
p, span, a, button, input, textarea, select, label, li, td, th, figcaption, strong, em {
    font-family: 'Paperlogy', 'Malgun Gothic', 'Apple SD Gothic Neo', sans-serif !important;
}

h1 { font-size: clamp(36px, 5vw, 64px); font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; }
h2 { font-size: clamp(28px, 3.5vw, 48px); font-weight: 700; line-height: 1.25; letter-spacing: -0.015em; }
h3 { font-size: clamp(22px, 2.5vw, 32px); font-weight: 600; line-height: 1.3; }
h4 { font-size: clamp(18px, 2vw, 24px); font-weight: 600; line-height: 1.35; }
h5 { font-size: clamp(16px, 1.5vw, 20px); font-weight: 500; line-height: 1.4; }
h6 { font-size: 14px; font-weight: 500; line-height: 1.5; }

p { font-size: 16px; font-weight: 400; line-height: 1.7; color: var(--color-text-secondary); }
a { color: inherit; text-decoration: none; transition: opacity var(--transition-fast); }
a:hover { opacity: 0.8; }

img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, textarea { font-family: inherit; outline: none; }

/* ========================================
   4. Layout Utilities
   ======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    position: relative;
    width: 100%;
    padding: 120px 0;
}

.section-md { padding: 80px 0; }

.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-4 { gap: 16px; }
.gap-6 { gap: 24px; }
.gap-8 { gap: 32px; }
.gap-12 { gap: 48px; }

.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.text-center { text-align: center; }
.w-full { width: 100%; }

/* ========================================
   Cursor Glow (Tech Interaction)
   ======================================== */
.cursor-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle at center, rgba(77, 115, 255, 0.14) 0%, rgba(54, 23, 206, 0.07) 40%, transparent 70%);
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: opacity 0.4s ease;
    opacity: 0;
    will-change: transform;
    filter: blur(48px);
    mix-blend-mode: screen;
}

body:hover .cursor-glow {
    opacity: 1;
}

@media (pointer: coarse) {
    .cursor-glow {
        display: none !important;
    }
}

/* Footer Logo */
.footer-brand .footer-logo img {
    height: 40px;
    width: auto;
    display: block;
    opacity: 0.88;
    transition: opacity 0.2s ease;
}

.footer-brand .footer-logo:hover img {
    opacity: 1;
}

/* ========================================
   5. Header
   ======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    display: flex;
    align-items: center;
    background: transparent;
    transition: background var(--transition-base), backdrop-filter var(--transition-base);
}

.site-header.scrolled {
    background: rgba(0, 0, 0, 0.82);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.site-logo {
    display: inline-flex;
    align-items: center;
}

.site-logo img {
    height: 32px;
    width: auto;
    display: block;
}

.main-nav ul {
    display: flex;
    align-items: center;
    gap: 32px;
}

.main-nav a {
    font-size: 15px;
    font-weight: 500;
    color: rgba(255,255,255,0.92);
    position: relative;
    padding: 8px 0;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.main-nav a:hover::after {
    transform: scaleX(1);
}

.header-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--color-primary);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.header-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(77, 115, 255, 0.35);
    opacity: 1;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 8px;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    transition: all var(--transition-fast);
}

.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }

/* ========================================
   6. Hero Section
   ======================================== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: var(--header-height);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 50%, rgba(54, 23, 206, 0.25) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 20%, rgba(77, 115, 255, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    padding: 0 24px;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 24px;
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    background: rgba(255,255,255,0.05);
}

.hero-title {
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: #fff;
    margin-bottom: 24px;
}

.hero-title .gradient-text {
    background: linear-gradient(135deg, rgb(77,115,255), rgb(107,140,255));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: clamp(16px, 1.5vw, 20px);
    font-weight: 400;
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border: 1px solid var(--color-primary);
}

.btn-primary:hover {
    background: rgb(90, 130, 255);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(77, 115, 255, 0.35);
    opacity: 1;
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.08);
    border-color: var(--color-border-hover);
    opacity: 1;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.5);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.05em;
    animation: bounce 2s infinite;
}

.hero-scroll svg {
    width: 24px;
    height: 24px;
}

/* ========================================
   7. Section Common
   ======================================== */
.section-head {
    margin-bottom: 64px;
}

.section-head.center {
    text-align: center;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.section-eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(28px, 3.5vw, 44px);
    font-weight: 700;
    line-height: 1.2;
    color: #fff;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 17px;
    font-weight: 400;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ========================================
   8. Architecture Section
   ======================================== */
.architecture-section {
    background: var(--color-bg);
}

.architecture-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.architecture-card {
    padding: 40px 32px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.architecture-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-md);
}

.architecture-card .card-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(77, 115, 255, 0.12);
    border-radius: var(--radius-sm);
    margin-bottom: 24px;
    color: var(--color-primary);
    font-size: 24px;
}

.architecture-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 12px;
}

.architecture-card p {
    font-size: 15px;
    color: var(--color-text-muted);
    line-height: 1.65;
}

/* ========================================
   9. Service Section
   ======================================== */
.service-section {
    background: linear-gradient(180deg, var(--color-bg) 0%, rgba(23,23,23,0.6) 100%);
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.service-item {
    display: grid;
    grid-template-columns: 80px 1fr auto;
    align-items: center;
    gap: 32px;
    padding: 32px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.service-item:hover {
    background: var(--color-surface-elevated);
    border-color: rgba(77, 115, 255, 0.3);
}

.service-num {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-primary);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    border-radius: 50%;
}

.service-text h3 {
    font-size: 20px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 6px;
}

.service-text p {
    font-size: 15px;
    color: var(--color-text-muted);
}

.service-arrow {
    color: rgba(255,255,255,0.4);
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.service-item:hover .service-arrow {
    transform: translateX(4px);
    color: var(--color-primary);
}

/* ========================================
   10. Hook Section
   ======================================== */
.hook-section {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hook-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(54, 23, 206, 0.3) 0%, transparent 70%);
    pointer-events: none;
}

.hook-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 0 24px;
}

.hook-title {
    font-size: clamp(32px, 4vw, 52px);
    font-weight: 800;
    line-height: 1.2;
    color: #fff;
    margin-bottom: 20px;
}

.hook-desc {
    font-size: 18px;
    color: rgba(255,255,255,0.65);
    margin-bottom: 32px;
}

/* ========================================
   11. Case Section
   ======================================== */
.case-section {
    background: linear-gradient(180deg, #030712 0%, #0a0f1e 100%);
    padding: 100px 0;
}

.case-section .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

@media (max-width: 1024px) {
    .case-section .container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .case-section .container {
        grid-template-columns: 1fr;
    }
}

.case-item {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s;
    position: relative;
}

.case-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(96,165,250,0.3), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.case-item:hover::before { opacity: 1; }

.case-item:hover {
    border-color: rgba(96,165,250,0.15);
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.case-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.case-thumbnail {
    aspect-ratio: 16/10;
    overflow: hidden;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    position: relative;
}

.case-thumbnail img,
.case-thumbnail .no-image-placeholder {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.case-body {
    padding: 24px;
}

.case-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: #60a5fa;
    background: rgba(96, 165, 250, 0.1);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 12px;
    letter-spacing: 0.02em;
}

.case-title {
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1.4;
    color: #e2e8f0;
    margin-bottom: 8px;
}

.case-date {
    display: block;
    font-size: 0.8rem;
    color: #475569;
    margin-bottom: 12px;
}

.case-excerpt {
    font-size: 0.9rem;
    color: #94a3b8;
    line-height: 1.6;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ========================================
   12. Media Section
   ======================================== */
.media-section {
    background: var(--color-surface);
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.media-card {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    aspect-ratio: 1;
    background: var(--color-surface-elevated);
}

.media-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.media-card:hover img {
    transform: scale(1.08);
}

.media-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.8) 100%);
    display: flex;
    align-items: flex-end;
    padding: 20px;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.media-card:hover .media-card-overlay {
    opacity: 1;
}

.media-card-overlay span {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
}

/* ========================================
   13. Contact Banner
   ======================================== */
.contact-banner {
    position: relative;
    padding: 100px 0;
    text-align: center;
    overflow: hidden;
}

.contact-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 50%, rgba(77, 115, 255, 0.15) 0%, transparent 60%);
}

.contact-banner .container {
    position: relative;
    z-index: 1;
}

.contact-banner h2 {
    font-size: clamp(28px, 3.5vw, 44px);
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}

.contact-banner p {
    font-size: 17px;
    color: var(--color-text-muted);
    margin-bottom: 32px;
}

/* ========================================
   14. Footer
   ======================================== */
.site-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 64px;
}

.footer-brand .footer-logo {
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
    display: inline-block;
}

.footer-brand p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.6;
    max-width: 280px;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col a {
    font-size: 14px;
    font-weight: 400;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer-col a:hover {
    color: #fff;
    opacity: 1;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255,255,255,0.35);
}

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-muted);
    font-size: 14px;
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
    opacity: 1;
}

/* ========================================
   15. Mobile Navigation Overlay
   ======================================== */
.mobile-nav {
    position: fixed;
    inset: 0;
    z-index: 999;
    background: rgba(0,0,0,0.95);
    backdrop-filter: blur(16px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-nav.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav a {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
}

/* ========================================
   16. Reveal Animation
   ======================================== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ========================================
   17. Keyframes
   ======================================== */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* ========================================
   18. Responsive
   ======================================== */
@media (max-width: 1024px) {
    :root { --container-padding: 32px; }
    .architecture-grid { grid-template-columns: repeat(2, 1fr); }
    .case-grid { grid-template-columns: 1fr; }
    .media-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .service-item { grid-template-columns: 60px 1fr; }
    .service-arrow { display: none; }
}

@media (max-width: 768px) {
    :root { --container-padding: 24px; }
    .main-nav, .header-cta { display: none; }
    .menu-toggle { display: flex; }
    .section { padding: 80px 0; }
    .architecture-grid { grid-template-columns: 1fr; }
    .media-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
    .hero-buttons { flex-direction: column; width: 100%; }
    .hero-buttons .btn { width: 100%; }
    .service-item { grid-template-columns: 1fr; gap: 16px; }
    .service-num { width: 40px; height: 40px; font-size: 12px; }
}

@media (max-width: 480px) {
    :root { --container-padding: 20px; }
    .hero-title { font-size: 32px; }
    .section-title { font-size: 24px; }
    .media-grid { grid-template-columns: 1fr; }
}

/* ========================================
   19. Dropdown Navigation
   ======================================== */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 0;
    position: relative;
}

.nav-dropdown-toggle svg.chevron {
    width: 14px;
    height: 14px;
    color: rgba(255,255,255,0.5);
    transition: transform 0.25s cubic-bezier(0.4,0,0.2,1), color 0.2s ease;
    flex-shrink: 0;
}

.nav-dropdown:hover .nav-dropdown-toggle svg.chevron {
    transform: rotate(180deg);
    color: #fff;
}

.nav-dropdown:hover .nav-dropdown-toggle {
    color: #fff;
}

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: -10px;
    background: rgba(18, 18, 22, 0.98);
    backdrop-filter: blur(24px) saturate(1.4);
    -webkit-backdrop-filter: blur(24px) saturate(1.4);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 14px;
    padding: 8px;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(4px) scale(0.97);
    transform-origin: top right;
    transition: opacity 0.2s ease, transform 0.2s cubic-bezier(0.4,0,0.2,1), visibility 0.2s;
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: 2px;
    box-shadow: 0 24px 64px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.03) inset;
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.nav-dropdown-menu::before {
    content: '';
    position: absolute;
    top: -5px;
    right: 28px;
    width: 10px;
    height: 10px;
    background: rgba(18, 18, 22, 0.98);
    border-left: 1px solid rgba(255,255,255,0.06);
    border-top: 1px solid rgba(255,255,255,0.06);
    transform: rotate(45deg);
    z-index: 0;
}

.nav-dropdown-menu li {
    list-style: none;
    position: relative;
    z-index: 2;
}

.nav-dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    font-size: 13.5px;
    font-weight: 500;
    color: rgba(255,255,255,0.6);
    white-space: nowrap;
    border-radius: 10px;
    transition: all 0.15s ease;
    letter-spacing: 0.01em;
}

.nav-dropdown-menu a:hover {
    background: rgba(255,255,255,0.06);
    color: #fff;
    opacity: 1;
}

.nav-dropdown-menu a::after {
    display: none !important;
}

/* Mobile nav divider */
.mobile-divider {
    width: 40px;
    height: 1px;
    background: rgba(255,255,255,0.12);
    margin: 6px 0;
}

/* ========================================
   20. Brand Logo Rail (Partner Slide)
   ======================================== */
.logo-rail-section {
    padding: 60px 0 50px;
    background: var(--color-bg);
    overflow: hidden;
}

.logo-rail {
    width: 100%;
    overflow: hidden;
    position: relative;
}

.logo-track {
    display: flex;
    align-items: center;
    width: max-content;
    will-change: transform;
    animation: railSlide 30s linear infinite;
}

.logo-set,
.logo-set-clone {
    display: flex;
    align-items: center;
    gap: clamp(28px, 4vw, 64px);
    flex-shrink: 0;
}

.logo-item {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    height: clamp(16px, 2vw, 26px);
    opacity: 0.45;
    transition: opacity 0.25s ease;
    filter: grayscale(1);
}

.logo-item:hover {
    opacity: 0.9;
}

.logo-item svg {
    height: 100%;
    width: auto;
    max-width: 90px;
    display: block;
}

@keyframes railMove {
    0% { transform: translate3d(0, 0, 0); }
    100% { transform: translate3d(var(--set-width, -50%), 0, 0); }
}

/* ========================================
   21. Responsive Updates
   ======================================== */
@media (max-width: 768px) {
    .nav-dropdown-menu {
        display: none;
    }
    .logo-item {
        height: 24px;
    }
    .logo-track {
        gap: 40px;
    }
}

/* ========================================
   22. Contact Form
   ======================================== */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row--2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 13.5px;
    font-weight: 600;
    color: rgba(255,255,255,0.85);
    letter-spacing: 0.01em;
}

.form-required {
    color: var(--color-primary);
    font-weight: 700;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    font-weight: 400;
    font-family: var(--font-primary);
    color: #fff;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    -webkit-appearance: none;
    appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: rgba(255,255,255,0.3);
    font-weight: 300;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    border-color: rgba(77, 115, 255, 0.5);
    background: rgba(77, 115, 255, 0.04);
    box-shadow: 0 0 0 3px rgba(77, 115, 255, 0.08);
}

.form-textarea {
    resize: vertical;
    min-height: 140px;
    line-height: 1.6;
}

.form-select-wrap {
    position: relative;
}

.form-select {
    padding-right: 44px;
    cursor: pointer;
}

.form-select-icon {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: rgba(255,255,255,0.35);
    pointer-events: none;
}

.form-select option {
    background: var(--color-surface);
    color: #fff;
}

.form-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 16px 32px;
    font-size: 15px;
    font-weight: 600;
    font-family: var(--font-primary);
    color: #fff;
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.25s ease;
    letter-spacing: 0.02em;
}

.form-submit:hover {
    background: rgb(90, 130, 255);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(77, 115, 255, 0.35);
}

.form-submit:active {
    transform: translateY(0);
}

.form-notice {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
    line-height: 1.5;
}

.form-notice--success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.2);
    color: rgb(74, 222, 128);
}

.form-notice--error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: rgb(252, 129, 129);
}

/* ========================================
   23. Responsive Contact Form
   ======================================== */
@media (max-width: 768px) {
    .form-row--2col {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   24. Laptop Compare CTA Section
   ======================================== */
.laptop-compare-cta-section {
    padding: 100px 0;
    text-align: center;
}

.laptop-compare-cta-section .section-head,
.laptop-compare-cta-section .section-title,
.laptop-compare-cta-section .section-desc {
    text-align: center;
}

.compare-cta-pickers {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin: 48px auto 36px;
}

.compare-cta-pickers .compare-select {
    min-width: 280px;
    padding: 16px 48px 16px 20px;
    font-size: 15px;
    font-weight: 500;
    color: #fff;
    background: #171717;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    outline: none;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    transition: border-color 0.2s;
    font-family: inherit;
}

.compare-cta-pickers .compare-select:focus {
    border-color: rgba(77, 115, 255, 0.5);
    box-shadow: 0 0 0 3px rgba(77, 115, 255, 0.08);
}

.compare-cta-pickers .compare-select option {
    background: #171717;
    color: #fff;
    padding: 10px;
}

.compare-cta-pickers .compare-vs {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    border-radius: 50%;
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    flex-shrink: 0;
    box-shadow: 0 8px 24px rgba(77, 115, 255, 0.3);
}

.compare-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 40px;
    background: var(--color-primary);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
    letter-spacing: 0.02em;
}

.compare-cta-btn:hover {
    background: #5a82ff;
    transform: translateY(-2px);
    box-shadow: 0 12px 36px rgba(77, 115, 255, 0.35);
}

@media (max-width: 480px) {
    .compare-cta-pickers {
        gap: 16px;
    }
    .compare-cta-pickers .compare-select {
        min-width: 240px;
        padding: 14px 40px 14px 16px;
    }
    .compare-cta-pickers .compare-vs {
        width: 48px;
        height: 48px;
        font-size: 15px;
    }
}

/* ========================================
   Logo Rail — Infinite Scroll (Responsive)
   ======================================== */
.logo-rail-section {
    padding: 60px 0 50px;
    background: var(--color-bg);
    overflow: hidden;
}

.logo-rail {
    width: 100%;
    overflow: hidden;
    position: relative;
}

.logo-track {
    display: flex;
    align-items: center;
    gap: clamp(32px, 5vw, 72px);
    width: max-content;
    will-change: transform;
    animation: railSlide linear infinite;
}

@keyframes railSlide {
    0% { transform: translate3d(0, 0, 0); }
    100% { transform: translate3d(-50%, 0, 0); }
}

.logo-item {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    height: clamp(18px, 2.2vw, 28px);
    opacity: 0.45;
    transition: opacity 0.25s ease;
    filter: grayscale(1);
}

.logo-item:hover {
    opacity: 0.9;
}

.logo-item svg {
    height: 100%;
    width: auto;
    display: block;
}

/* ========================================
   Laptop Compare CTA
   ======================================== */
.compare-picker {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

.compare-select-wrap {
    position: relative;
    min-width: 280px;
}

.compare-select {
    width: 100%;
    padding: 16px 48px 16px 20px;
    font-size: 15px;
    font-weight: 500;
    color: #fff;
    background: #171717;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    outline: none;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    transition: border-color .2s;
    font-family: inherit;
}

.compare-select:focus {
    border-color: rgba(77, 115, 255, 0.5);
    box-shadow: 0 0 0 3px rgba(77, 115, 255, 0.08);
}

.compare-select option {
    background: #171717;
    color: #fff;
    padding: 10px;
}

.compare-select-arrow {
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: rgba(255, 255, 255, 0.35);
    pointer-events: none;
}

.compare-vs {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    border-radius: 50%;
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    flex-shrink: 0;
    box-shadow: 0 8px 24px rgba(77, 115, 255, 0.3);
}

.compare-btn {
    display: inline-flex;
    align-items: center;
    padding: 14px 36px;
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    background: var(--color-primary);
    border: none;
    border-radius: 10px;
    text-decoration: none;
    cursor: pointer;
    transition: all .25s;
    letter-spacing: 0.02em;
}

.compare-btn:hover {
    background: #5a82ff;
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(77, 115, 255, 0.35);
}

.laptop-compare-cta-section .compare-btn {
    margin-top: 36px;
}

.compare-btn:disabled {
    opacity: .4;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Hook cards (Trust Signals) */
.hook-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 48px;
}

/* ========================================
   Mobile overrides
   ======================================== */
@media (max-width: 480px) {
    .compare-picker {
        display: grid;
        grid-template-columns: 1fr auto 1fr;
        gap: 12px 8px;
        margin-bottom: 48px;
    }
    .compare-select-wrap {
        min-width: 0;
        width: 100%;
    }
    .compare-select {
        padding: 12px 36px 12px 14px;
        font-size: 14px;
    }
    .compare-select-arrow {
        right: 14px;
    }
    .compare-vs {
        width: 40px;
        height: 40px;
        font-size: 14px;
        align-self: center;
    }
    .compare-btn {
        grid-column: 1 / -1;
        justify-content: center;
        padding: 12px 28px;
    }

    .hook-cards {
        display: flex;
        overflow-x: auto;
        flex-wrap: nowrap;
        gap: 12px;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 8px;
    }
    .hook-cards::-webkit-scrollbar {
        display: none;
    }
    .hook-cards > div {
        flex: 0 0 78vw;
        scroll-snap-align: start;
    }
}

/* ========================================
   25. Reading Progress Bar (Global)
   ======================================== */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    z-index: 99999;
    background: rgba(255, 255, 255, 0.05);
    pointer-events: none;
}

.reading-progress__bar {
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, #4d73ff, #6b8cff);
    transform: scaleX(0);
    transform-origin: left;
}

/* ========================================
   26. Category Page — Hero Section
   ======================================== */
.cat-hero {
    position: relative;
    padding: calc(var(--header-height) + 64px) 0 64px;
    background: linear-gradient(135deg, rgba(37,99,235,0.25) 0%, rgba(30,64,175,0.15) 100%);
    border-bottom: 1px solid var(--color-border);
    overflow: hidden;
}

.cat-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(77,115,255,0.12) 0%, transparent 60%);
    pointer-events: none;
}

.cat-hero__inner {
    position: relative;
    z-index: 1;
}

.cat-hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
}

.cat-hero__title {
    font-size: clamp(32px, 4vw, 52px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: #fff;
    margin-bottom: 12px;
}

.cat-hero__desc {
    font-size: clamp(15px, 1.4vw, 18px);
    color: rgba(255,255,255,0.65);
    line-height: 1.7;
    max-width: 640px;
    margin-bottom: 20px;
}

.cat-hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(77, 115, 255, 0.12);
    border: 1px solid rgba(77, 115, 255, 0.25);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
}

/* ========================================
   27. Category Page — Breadcrumb
   ======================================== */
.cat-breadcrumb {
    padding: 20px 0;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
}

.cat-breadcrumb__list {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-text-muted);
    flex-wrap: wrap;
}

.cat-breadcrumb__list a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.cat-breadcrumb__list a:hover {
    color: #fff;
    opacity: 1;
}

.cat-breadcrumb__sep {
    color: rgba(255,255,255,0.25);
    font-size: 11px;
}

.cat-breadcrumb__current {
    color: #fff;
    font-weight: 600;
}

/* ========================================
   28. Category Page — Filter Bar
   ======================================== */
.cat-filter {
    padding: 20px 0;
    background: var(--color-bg);
    position: sticky;
    top: var(--header-height);
    z-index: 100;
    border-bottom: 1px solid var(--color-border);
    transition: background var(--transition-base), backdrop-filter var(--transition-base);
}

.cat-filter.scrolled {
    background: rgba(0,0,0,0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.cat-filter__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.cat-filter__pills {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.cat-filter__pills::-webkit-scrollbar {
    display: none;
}

.cat-filter__pill {
    flex-shrink: 0;
    padding: 8px 18px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    cursor: pointer;
    transition: all var(--transition-base);
    touch-action: manipulation;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.cat-filter__pill:hover {
    border-color: var(--color-border-hover);
    color: #fff;
    opacity: 1;
}

.cat-filter__pill.is-active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
    font-weight: 600;
}

.cat-filter__pill.is-active[aria-pressed="true"] {
    box-shadow: 0 0 0 2px rgba(77,115,255,0.3);
}

.cat-filter__view {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.cat-filter__view-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-base);
    touch-action: manipulation;
}

.cat-filter__view-btn:hover {
    border-color: var(--color-border-hover);
    color: #fff;
}

.cat-filter__view-btn.is-active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.cat-filter__view-btn svg {
    width: 18px;
    height: 18px;
}

/* ========================================
   29. Category Page — Layout (Main + Sidebar)
   ======================================== */
.cat-layout {
    display: grid;
    grid-template-columns: 1fr var(--cat-sidebar-width);
    gap: 48px;
    padding: 48px 0 80px;
    align-items: start;
}

/* ========================================
   30. Category Page — Post Grid
   ======================================== */
.cat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.cat-grid.is-list {
    grid-template-columns: 1fr;
    gap: 0;
}

/* ========================================
   31. Category Page — Post Card
   ======================================== */
.cat-card {
    display: flex;
    flex-direction: column;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--cat-card-radius);
    overflow: hidden;
    transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.cat-grid.is-list .cat-card {
    flex-direction: row;
    border-radius: 0;
    border: none;
    border-bottom: 1px solid var(--color-border);
    background: transparent;
}

.cat-grid.is-list .cat-card:last-child {
    border-bottom: none;
}

.cat-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-md);
}

.cat-grid.is-list .cat-card:hover {
    transform: none;
    box-shadow: none;
    background: rgba(255,255,255,0.02);
}

.cat-card__thumb {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-surface-elevated);
}

.cat-grid.is-list .cat-card__thumb {
    width: 280px;
    flex-shrink: 0;
    aspect-ratio: 16 / 10;
    border-radius: var(--cat-card-radius);
    overflow: hidden;
}

.cat-card__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.cat-card:hover .cat-card__thumb img {
    transform: scale(1.05);
}

.cat-card__thumb::after {
    content: 'Read More';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.5);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.05em;
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.cat-card:hover .cat-card__thumb::after {
    opacity: 1;
}

.cat-card__body {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 24px;
    flex: 1;
}

.cat-grid.is-list .cat-card__body {
    padding: 24px 0 24px 24px;
    justify-content: center;
}

.cat-card__badge {
    display: inline-flex;
    align-self: flex-start;
    padding: 4px 10px;
    background: rgba(77, 115, 255, 0.1);
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
    line-height: 1;
}

.cat-card__title {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    color: #fff;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    letter-spacing: -0.01em;
}

.cat-card__title a {
    color: inherit;
    transition: color var(--transition-fast);
}

.cat-card__title a:hover {
    color: var(--color-primary);
    opacity: 1;
}

.cat-card__excerpt {
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cat-card__meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--cat-meta-color);
    flex-wrap: wrap;
}

.cat-card__meta-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
    overflow: hidden;
}

.cat-card__meta-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cat-card__meta-sep {
    color: rgba(255,255,255,0.2);
}

/* ========================================
   32. Category Page — 5n Banner
   ======================================== */
.cat-banner {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 24px;
    background: var(--cat-banner-bg);
    border-top: 2px solid var(--cat-banner-border);
    border-radius: var(--cat-card-radius);
    font-size: 15px;
    font-weight: 600;
    color: var(--color-primary);
}

.cat-grid.is-list .cat-banner {
    border-radius: 0;
    margin: 0;
}

.cat-banner__icon {
    font-size: 18px;
    flex-shrink: 0;
}

/* ========================================
   33. Category Page — Sidebar
   ======================================== */
.cat-sidebar {
    display: flex;
    flex-direction: column;
    gap: 32px;
    position: sticky;
    top: calc(var(--header-height) + 24px);
}

.cat-widget {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--cat-card-radius);
    overflow: hidden;
}

.cat-widget__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
    transition: background var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.cat-widget__header:hover {
    background: rgba(255,255,255,0.02);
}

.cat-widget__title {
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: 4px;
    display: inline-block;
}

.cat-widget__toggle {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.cat-widget.is-open .cat-widget__toggle {
    transform: rotate(180deg);
}

.cat-widget__body {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-slow);
    padding: 0 24px;
}

.cat-widget.is-open .cat-widget__body {
    max-height: 800px;
    padding: 20px 24px;
}

/* First widget open by default on desktop */
@media (min-width: 1025px) {
    .cat-widget:first-child .cat-widget__body {
        max-height: 800px;
        padding: 20px 24px;
    }
    .cat-widget:first-child .cat-widget__toggle {
        transform: rotate(180deg);
    }
}

/* Popular Posts Widget */
.cat-popular__list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cat-popular__item {
    display: flex;
    align-items: center;
    gap: 14px;
}

.cat-popular__thumb {
    width: 60px;
    height: 44px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--color-surface-elevated);
    flex-shrink: 0;
}

.cat-popular__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cat-popular__info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.cat-popular__title {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color var(--transition-fast);
}

.cat-popular__item:hover .cat-popular__title {
    color: var(--color-primary);
}

.cat-popular__date {
    font-size: 12px;
    color: var(--color-text-muted);
}

/* Tag Cloud Widget */
.cat-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.cat-tag {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.cat-tag:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(77,115,255,0.08);
}

.cat-tag--xs { font-size: 11px; padding: 4px 10px; }
.cat-tag--sm { font-size: 12px; padding: 5px 11px; }
.cat-tag--md { font-size: 14px; padding: 7px 14px; font-weight: 600; }
.cat-tag--lg { font-size: 15px; padding: 8px 16px; font-weight: 600; }

/* Newsletter Widget */
.cat-newsletter__text {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 16px;
}

.cat-newsletter__form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cat-newsletter__input {
    width: 100%;
    padding: 12px 16px;
    font-size: 14px;
    font-family: var(--font-primary);
    color: #fff;
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.cat-newsletter__input::placeholder {
    color: rgba(255,255,255,0.3);
}

.cat-newsletter__input:focus {
    border-color: rgba(77, 115, 255, 0.5);
    box-shadow: 0 0 0 3px rgba(77, 115, 255, 0.08);
}

.cat-newsletter__btn {
    width: 100%;
    padding: 12px 16px;
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-primary);
    color: #fff;
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.25s ease;
    min-height: 44px;
}

.cat-newsletter__btn:hover {
    background: rgb(90, 130, 255);
    transform: translateY(-1px);
}

/* ========================================
   34. Category Page — Pagination
   ======================================== */
.cat-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 48px 0 0;
}

.cat-pagination__btn,
.cat-pagination__num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    touch-action: manipulation;
}

.cat-pagination__btn:hover,
.cat-pagination__num:hover {
    border-color: var(--color-border-hover);
    color: #fff;
    opacity: 1;
}

.cat-pagination__num.is-current {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
    font-weight: 600;
}

.cat-pagination__btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* Mobile Load More */
.cat-loadmore {
    display: none;
    width: 100%;
    padding: 14px 24px;
    font-size: 15px;
    font-weight: 600;
    font-family: var(--font-primary);
    color: #fff;
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 48px;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 32px;
}

.cat-loadmore:hover {
    background: rgb(90, 130, 255);
}

.cat-loadmore.is-loading {
    opacity: 0.7;
    pointer-events: none;
}

.cat-loadmore.is-end {
    background: var(--color-surface);
    color: var(--color-text-muted);
    cursor: default;
}

.cat-loadmore.is-error {
    background: rgba(239, 68, 68, 0.15);
    color: rgb(252, 129, 129);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ========================================
   35. Category Page — Empty State
   ======================================== */
.cat-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 80px 24px;
    text-align: center;
    grid-column: 1 / -1;
}

.cat-empty__icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    font-size: 28px;
    color: var(--color-text-muted);
}

.cat-empty__title {
    font-size: 20px;
    font-weight: 600;
    color: #fff;
}

.cat-empty__desc {
    font-size: 15px;
    color: var(--color-text-muted);
    max-width: 400px;
}

.cat-empty__btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    margin-top: 8px;
}

.cat-empty__btn:hover {
    background: rgb(90, 130, 255);
    transform: translateY(-2px);
    opacity: 1;
}

/* ========================================
   36. Category Page — Toast Notification
   ======================================== */
.cat-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9998;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.cat-toast.is-visible {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.cat-toast--success {
    border-color: rgba(34, 197, 94, 0.3);
    background: rgba(34, 197, 94, 0.1);
    color: rgb(74, 222, 128);
}

.cat-toast--error {
    border-color: rgba(239, 68, 68, 0.3);
    background: rgba(239, 68, 68, 0.1);
    color: rgb(252, 129, 129);
}

/* ========================================
   37. Category Page — Responsive
   ======================================== */
@media (max-width: 1024px) {
    .cat-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .cat-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    .cat-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .cat-grid.is-list .cat-card {
        flex-direction: column;
    }
    .cat-grid.is-list .cat-card__thumb {
        width: 100%;
        aspect-ratio: 16 / 9;
        border-radius: var(--cat-card-radius) var(--cat-card-radius) 0 0;
    }
    .cat-grid.is-list .cat-card__body {
        padding: 24px;
    }
}

@media (max-width: 768px) {
    .cat-hero {
        padding: calc(var(--header-height) + 40px) 0 40px;
    }
    .cat-filter {
        top: var(--header-height);
    }
    .cat-filter__inner {
        gap: 12px;
    }
    .cat-grid {
        grid-template-columns: 1fr;
    }
    .cat-sidebar {
        grid-template-columns: 1fr;
    }
    .cat-pagination {
        display: none;
    }
    .cat-loadmore {
        display: flex;
    }
    .cat-card__title {
        font-size: 17px;
    }
    .cat-toast {
        right: 16px;
        left: 16px;
        bottom: 16px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .cat-hero__title {
        font-size: 28px;
    }
    .cat-card__body {
        padding: 20px;
    }
    .cat-card__thumb::after {
        display: none;
    }
    .cat-banner {
        padding: 16px;
        font-size: 14px;
    }
    .cat-widget__header {
        padding: 16px 20px;
    }
    .cat-widget.is-open .cat-widget__body,
    .cat-widget:first-child .cat-widget__body {
        padding: 16px 20px;
    }
}
/* ========================================
   Blockquote (Review Verdict)
   ======================================== */
blockquote {
    margin: 48px 0;
    padding: 28px 32px;
    background: var(--color-surface);
    border-left: 4px solid var(--color-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-size: 17px;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

blockquote p {
    margin: 0;
    font-style: normal;
}

blockquote p strong {
    color: #fff;
}

    
}

@media (max-width: 768px) {
    
}

/* ========================================
   Floating TOC — Fixed Position (Viewport)
   ======================================== */
.floating-toc {
    position: fixed;
    left: max(20px, calc(50% - 520px));
    top: 120px;
    width: 220px;
    max-height: calc(100vh - 160px);
    overflow-y: auto;
    z-index: 999;
    background: #171717;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 24px 64px rgba(0,0,0,0.5);
}

.floating-toc::-webkit-scrollbar {
    width: 4px;
}

.floating-toc::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.2);
    border-radius: 4px;
}

.toc-title {
    font-size: 13px;
    font-weight: 700;
    color: rgb(77,115,255);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.toc-list li {
    margin: 0;
}

.toc-list a {
    display: flex;
    align-items: center;
    color: rgba(255,255,255,0.5);
    font-size: 14px;
    line-height: 1.5;
    padding: 6px 0;
    text-decoration: none;
    transition: color 0.2s ease;
    position: relative;
}

.toc-list a::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: transparent;
    margin-right: 10px;
    flex-shrink: 0;
    transition: background 0.2s ease, box-shadow 0.2s ease;
}

.toc-list a:hover {
    color: #fff;
}

.toc-list a.active {
    color: rgb(77,115,255);
    font-weight: 600;
}

.toc-list a.active::before {
    background: rgb(77,115,255);
    box-shadow: 0 0 6px rgba(77, 115, 255, 0.5);
}

/* Hide TOC on smaller screens */
@media (max-width: 1200px) {
    .floating-toc {
        display: none;
    }
}

/* ========================================
   No Image Placeholder (빈 공간 규격 유지)
   ======================================== */
.no-image-placeholder.empty {
    width: 100%;
    aspect-ratio: 16 / 9;
    background-color: #F5F5F0; /* 사이트 배경과 살짝 다른 톤 */
    border-radius: 8px;
    
    /* "비어있음"을 암시하는 미세한 패턴 (선택사항) */
    background-image: radial-gradient(circle, #E0E0E0 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.6;
    
    /* 카드 내에서 유연하게 늘어나지 않도록 */
    flex-shrink: 0;
}

/* 썸네일 래퍼가 flex 자식일 경우 높이 고정 */
.case-thumbnail {
    width: 100%;
    line-height: 0; /* 이미지 하단 여백 제거 */
}

/* 실제 이미지도 동일 비율 강제 */
.case-thumbnail img,
.case-thumbnail .no-image-placeholder {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
}

/* 썸네일 래퍼: 이미지와 빈 공간 모두 동일하게 처리 */
.case-thumbnail {
    width: 100%;
    line-height: 0;
    overflow: hidden;
    border-radius: 8px;
}

/* 실제 이미지도 동일 비율 */
.case-thumbnail img {
    width: 100%;
    height: auto;
    display: block;
}

/* 썸네일 없을 때 빈 공간 */
.no-image-placeholder.empty {
    flex-shrink: 0;
}
/* ========================================
   Case Section Thumbnail Size Control
   ======================================== */

/* 썸네일 래퍼: 높이를 제한하여 카드 크기 조절 */
.case-thumbnail {
    width: 100%;
    max-height: 200px;        /* 데스크톱에서 적당한 높이 (200~240px 사이 조절) */
    overflow: hidden;
    border-radius: 8px;
    line-height: 0;
}

/* 실제 이미지: 잘리더라도 지정된 공간을 꽉 채움 */
.case-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;        /* 비율 유지하면서 공간 채움 (일부 잘림 허용) */
    display: block;
}

/* 빈 공간(no-image)도 동일 높이 유지 */
.case-thumbnail .no-image-placeholder.empty {
    width: 100%;
    height: 100%;             /* max-height 상속 */
    aspect-ratio: 16 / 9;
    background: #F5F5F0;
    border-radius: 8px;
}

/* 모바일에서는 살짝 더 크게 */
@media (max-width: 768px) {
    .case-thumbnail {
        max-height: 240px;
    }
}

/* =====================================================
   VOLTPIK DARK POST SYSTEM — TechBada Inspired Clone
   ===================================================== */

/* --- Dark Post Page Base --- */
body.single,
body.single-post {
  background: #07080a;
  color: #e7edf4;
  font-family: 'Paperlogy', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body.single .site-header {
  background: rgba(7, 8, 10, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

body.single .site-logo {
  color: #60a5fa;
}

/* --- Post Layout Grid (Content + TOC) --- */
.volt-post-layout {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 64px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 120px;
  align-items: start;
}

@media (max-width: 1024px) {
  .volt-post-layout {
    grid-template-columns: 1fr;
    gap: 48px;
    padding: 32px 20px 80px;
  }
}

/* --- Article Content --- */
.volt-article {
  min-width: 0;
  max-width: 780px;
}

.volt-article h1 {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  color: #f6f8fb;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
  word-break: keep-all;
}

.volt-article .volt-lead {
  font-size: clamp(17px, 1.6vw, 21px);
  line-height: 1.7;
  color: #9aa3ad;
  margin-bottom: 48px;
  font-weight: 400;
}

.volt-article h2 {
  font-size: clamp(26px, 2.8vw, 36px);
  font-weight: 700;
  line-height: 1.2;
  margin: 80px 0 24px;
  color: #f6f8fb;
  letter-spacing: -0.02em;
  word-break: keep-all;
}

.volt-article h2:first-of-type {
  margin-top: 48px;
}

.volt-article h3 {
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 600;
  line-height: 1.35;
  margin: 48px 0 16px;
  color: #f6f8fb;
  letter-spacing: -0.01em;
  word-break: keep-all;
}

.volt-article p {
  font-size: clamp(16px, 1.3vw, 18px);
  line-height: 1.82;
  color: rgba(231, 237, 244, 0.78);
  margin-bottom: 20px;
  word-break: keep-all;
}

.volt-article strong {
  color: #f6f8fb;
  font-weight: 600;
}

.volt-article ul,
.volt-article ol {
  margin: 0 0 24px 0;
  padding-left: 22px;
}

.volt-article li {
  font-size: clamp(16px, 1.3vw, 18px);
  line-height: 1.82;
  color: rgba(231, 237, 244, 0.78);
  margin-bottom: 12px;
}

.volt-article a {
  color: #60a5fa;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.volt-article a:hover {
  color: #93c5fd;
}

/* --- Hero Summary Box --- */
.volt-hero-box {
  background: linear-gradient(135deg, rgba(15,23,42,0.8) 0%, rgba(30,41,59,0.6) 100%);
  border: 1px solid rgba(96,165,250,0.12);
  border-radius: 16px;
  padding: 36px 32px;
  margin-bottom: 48px;
  position: relative;
  overflow: hidden;
}

.volt-hero-box::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(96,165,250,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.volt-hero-box h2 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #60a5fa;
  margin: 0 0 20px 0;
}

.volt-hero-box ul {
  list-style: none;
  padding: 0;
  margin: 0;
  position: relative;
  z-index: 1;
}

.volt-hero-box li {
  color: #e2e8f0;
  font-size: 16px;
  line-height: 1.75;
  padding-left: 24px;
  position: relative;
  margin-bottom: 10px;
}

.volt-hero-box li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: #60a5fa;
  font-weight: 700;
}

/* --- Highlight Info Box --- */
.volt-info-box {
  background: rgba(96, 165, 250, 0.05);
  border-left: 3px solid #60a5fa;
  padding: 24px 28px;
  border-radius: 0 12px 12px 0;
  margin: 32px 0;
}

.volt-info-box p {
  margin: 0;
  color: #cbd5e1;
  font-size: 16px;
  line-height: 1.8;
}

.volt-info-box p + p {
  margin-top: 12px;
}

/* --- Spec Table --- */
.volt-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 32px 0;
  background: rgba(15, 23, 42, 0.4);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.06);
}

.volt-table thead th {
  background: rgba(96, 165, 250, 0.08);
  color: #60a5fa;
  font-weight: 600;
  padding: 14px 18px;
  text-align: left;
  font-size: 13px;
  letter-spacing: 0.02em;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.volt-table td {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  color: #e2e8f0;
  font-size: 15px;
}

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

.volt-table tbody tr:hover td {
  background: rgba(96, 165, 250, 0.03);
}

/* --- Buyer Grid (Recommend / Avoid) --- */
.volt-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 32px 0;
}

@media (max-width: 640px) {
  .volt-grid-2 {
    grid-template-columns: 1fr;
  }
}

.volt-card {
  background: rgba(15, 23, 42, 0.4);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid rgba(255,255,255,0.06);
}

.volt-card--good {
  border-color: rgba(34, 197, 94, 0.15);
}

.volt-card--bad {
  border-color: rgba(239, 68, 68, 0.15);
}

.volt-card h4 {
  margin: 0 0 14px 0;
  font-size: 15px;
  font-weight: 700;
}

.volt-card--good h4 {
  color: #4ade80;
}

.volt-card--bad h4 {
  color: #f87171;
}

.volt-card ul {
  margin: 0;
  padding-left: 18px;
}

.volt-card li {
  color: #cbd5e1;
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 8px;
}

/* --- Source Link Box --- */
.volt-source-box {
  background: rgba(15, 23, 42, 0.4);
  border-radius: 12px;
  padding: 20px 24px;
  border: 1px solid rgba(255,255,255,0.06);
  margin: 24px 0;
}

.volt-source-box a {
  color: #60a5fa;
  text-decoration: none;
  font-size: 14px;
  line-height: 2.2;
  display: block;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  padding: 2px 0;
}

.volt-source-box a:last-child {
  border-bottom: none;
}

.volt-source-box a:hover {
  color: #93c5fd;
  text-decoration: underline;
}

/* --- Sticky TOC Sidebar --- */
.volt-toc {
  position: sticky;
  top: 100px;
  width: 240px;
  align-self: start;
}

@media (max-width: 1024px) {
  .volt-toc {
    display: none;
  }
}

.volt-toc__title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #64748b;
  margin-bottom: 16px;
}

.volt-toc__list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-left: 1px solid rgba(255,255,255,0.08);
  padding-left: 16px;
}

.volt-toc__list li {
  margin-bottom: 10px;
}

.volt-toc__list a {
  font-size: 13px;
  line-height: 1.5;
  color: #64748b;
  text-decoration: none;
  display: block;
  transition: color 0.2s;
}

.volt-toc__list a:hover,
.volt-toc__list a.is-active {
  color: #60a5fa;
}

/* --- Expert Profile Box --- */
.volt-author-box {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 48px 0 32px;
}

.volt-author-box__avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  flex-shrink: 0;
}

.volt-author-box__info h5 {
  font-size: 15px;
  font-weight: 600;
  color: #f6f8fb;
  margin: 0 0 4px 0;
}

.volt-author-box__info p {
  font-size: 13px;
  color: #64748b;
  margin: 0;
  line-height: 1.5;
}

/* --- Sticky Footer --- */
body.single {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

body.single .site-content {
  flex: 1 0 auto;
}

body.single .site-footer {
  position: sticky;
  bottom: 0;
  z-index: 100;
  background: #050607;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 16px 24px;
}

body.single .footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #475569;
}

body.single .footer-inner a {
  color: #475569;
  text-decoration: none;
  margin-left: 20px;
}

body.single .footer-inner a:hover {
  color: #94a3b8;
}

@media (max-width: 640px) {
  body.single .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
  body.single .footer-inner a {
    margin: 0 10px;
  }
}

/* --- Single Post Header Override --- */
body.single .single-header {
  text-align: center;
  padding: 80px 24px 40px;
  max-width: 800px;
  margin: 0 auto;
}

body.single .single-category {
  display: inline-block;
  background: rgba(96, 165, 250, 0.1);
  color: #60a5fa;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}

body.single .single-title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  color: #f6f8fb;
  margin-bottom: 16px;
}

body.single .single-meta {
  color: #64748b;
  font-size: 14px;
  border-bottom: none;
  padding-bottom: 0;
}

body.single .single-meta .author-avatar {
  display: none;
}

/* --- Scroll Progress Bar (Accent) --- */
.volt-scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, #60a5fa, #38bdf8);
  z-index: 9999;
  width: 0%;
  transition: width 0.1s linear;
}

/* ========================================
   AI-OPTIMIZATION: 2026-05-20 - Logo Rail CSS Animation
   ======================================== */
.logo-rail {
    width: 100vw;
    overflow: hidden;
    position: relative;
}

.logo-track {
    display: flex;
    align-items: center;
    gap: clamp(28px, 4vw, 64px);
    width: max-content;
    animation: logoRailScroll 30s linear infinite;
}

.logo-item {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    height: clamp(16px, 2vw, 26px);
    opacity: 0.45;
    filter: grayscale(1);
}

@keyframes logoRailScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
    .logo-track {
        animation: none;
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
    }
}