/*
Theme Name: NK Technical Support
Theme URI: https://nk-ts.com/
Author: 株式会社NKテクニカルサポート
Author URI: https://nk-ts.com/
Description: 株式会社NKテクニカルサポートが開発した、ICT支援・法人向けプロフェッショナルWordPressテーマ。カスタマイザーで色・フォント・レイアウト・動画・スライドショーなどをノーコードで設定可能。CBT試験センター・大学ICT支援・システム会社など、プロフェッショナルな現場に最適化された有料グレード機能を無償提供。
Version: 1.2.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: nk-tech
Tags: custom-colors, custom-font-sizes, custom-logo, custom-menu, editor-style, featured-images, full-width-template, rtl-language-support, sticky-post, theme-options, threaded-comments, translation-ready, block-patterns, wide-blocks, accessibility-ready

Copyright (C) 2024 株式会社NKテクニカルサポート. All Rights Reserved.
*/

/* ================================================
   Reset & Base Styles
================================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* ベースカラー */
    --nk-primary: #003366;
    --nk-secondary: #0066CC;
    --nk-accent: #FF6600;
    --nk-text: #333333;
    --nk-text-light: #666666;
    --nk-bg: #FFFFFF;
    --nk-bg-secondary: #F5F7FA;
    --nk-border: #E0E0E0;
    --nk-header-bg: #003366;
    --nk-header-text: #FFFFFF;
    --nk-footer-bg: #1a1a2e;
    --nk-footer-text: #cccccc;
    --nk-hero-overlay: rgba(0, 0, 0, 0.5);

    /* フォント */
    --nk-font-base: 'Noto Sans JP', sans-serif;
    --nk-font-heading: 'Noto Sans JP', sans-serif;
    --nk-font-size-base: 16px;
    --nk-font-size-h1: 48px;
    --nk-font-size-h2: 36px;
    --nk-font-size-h3: 24px;
    --nk-line-height: 1.8;

    /* レイアウト */
    --nk-container-width: 1200px;
    --nk-border-radius: 8px;
    --nk-transition: 0.3s ease;
    --nk-shadow: 0 4px 20px rgba(0,0,0,0.08);
    --nk-shadow-hover: 0 8px 40px rgba(0,0,0,0.16);
    --nk-header-height: 70px; /* カスタマイザーで上書き可能 */

    /* エリア別カラー（デフォルト値 - customizer-css.php で上書き） */
    --nk-page-header-bg: #003366;
    --nk-page-header-bg2: #0066CC;
    --nk-page-header-text: #ffffff;
    --nk-sidebar-bg-color: #ffffff;
    --nk-sidebar-text-color: #333333;
    --nk-sidebar-border-color: #E0E0E0;
    --nk-sidebar-widget-title-bg-color: #003366;
    --nk-sidebar-widget-title-text-color: #ffffff;
    --nk-btn-primary-bg: #FF6600;
    --nk-btn-primary-text: #ffffff;
    --nk-btn-secondary-bg: #0066CC;
    --nk-btn-cta-bg: #FF6600;
    --nk-btn-cta-text: #ffffff;
    --nk-btn-cta-hover-bg: #ff8533;
    --nk-card-bg: #ffffff;
    --nk-card-title-color: #003366;
    --nk-section-alt-bg: #F5F7FA;
    --nk-footer-link-color: #cccccc;
}

html {
    scroll-behavior: smooth;
    font-size: var(--nk-font-size-base);
}

body {
    font-family: var(--nk-font-base);
    color: var(--nk-text);
    background-color: var(--nk-bg);
    line-height: var(--nk-line-height);
    overflow-x: hidden;
}

/* ================================================
   Typography
================================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--nk-font-heading);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--nk-primary);
}

h1 { font-size: var(--nk-font-size-h1); }
h2 { font-size: var(--nk-font-size-h2); }
h3 { font-size: var(--nk-font-size-h3); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p { margin-bottom: 1.2rem; }
a {
    color: var(--nk-secondary);
    text-decoration: none;
    transition: color var(--nk-transition);
}
a:hover { color: var(--nk-accent); }

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

ul, ol { padding-left: 1.5rem; margin-bottom: 1rem; }

/* ================================================
   Layout
================================================ */
.nk-container {
    max-width: var(--nk-container-width);
    margin: 0 auto;
    padding: 0 24px;
}

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

.nk-section--bg {
    background-color: var(--nk-bg-secondary);
}

.nk-row {
    display: flex;
    flex-wrap: wrap;
    gap: 32px;
}

.nk-col-2 { flex: 1 1 calc(50% - 16px); }
.nk-col-3 { flex: 1 1 calc(33.333% - 22px); }
.nk-col-4 { flex: 1 1 calc(25% - 24px); }

/* ================================================
   Header
================================================ */
#site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--nk-header-bg);
    color: var(--nk-header-text);
    transition: all var(--nk-transition);
    box-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

#site-header.scrolled {
    background-color: var(--nk-header-bg);
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.nk-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

/* Logo */
.nk-site-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.nk-site-logo img {
    height: 45px;
    width: auto;
}

.nk-site-logo-text {
    display: flex;
    flex-direction: column;
}

.nk-site-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--nk-header-text);
    line-height: 1.2;
}

.nk-site-tagline {
    font-size: 0.65rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.2;
}

/* Navigation */
#site-navigation {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nk-nav-menu {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 4px;
}

.nk-nav-menu > li > a {
    display: block;
    padding: 8px 16px;
    color: var(--nk-header-text);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 4px;
    transition: all var(--nk-transition);
}

.nk-nav-menu > li > a:hover,
.nk-nav-menu > li.current-menu-item > a {
    background-color: rgba(255,255,255,0.15);
    color: var(--nk-accent);
}

/* Dropdown */
.nk-nav-menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    border-radius: var(--nk-border-radius);
    box-shadow: var(--nk-shadow-hover);
    min-width: 220px;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--nk-transition);
    z-index: 100;
}

.nk-nav-menu li:hover .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nk-nav-menu .sub-menu li a {
    display: block;
    padding: 10px 20px;
    color: var(--nk-text);
    font-size: 0.85rem;
    transition: all var(--nk-transition);
}

.nk-nav-menu .sub-menu li a:hover {
    background-color: var(--nk-bg-secondary);
    color: var(--nk-secondary);
}

.nk-nav-menu li {
    position: relative;
}

/* CTA Button in Header */
.nk-header-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background-color: var(--nk-accent);
    color: #fff !important;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 700;
    transition: all var(--nk-transition);
    margin-left: 16px;
}

.nk-header-cta:hover {
    background-color: #ff8533;
    transform: translateY(-1px);
}

/* Hamburger */
.nk-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    background: none;
    border: none;
    color: #fff;
}

.nk-hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: currentColor;
    transition: all var(--nk-transition);
}

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

/* ================================================
   Hero / Slider Section
================================================ */
#nk-hero {
    position: relative;
    width: 100%;
    overflow: hidden;
    margin-top: 70px;
}

/* Slider */
.nk-slider {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
}

.nk-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
    z-index: 1;
}

.nk-slide.active {
    opacity: 1;
    z-index: 2;
}

.nk-slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.nk-slide-video {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    object-fit: cover;
}

.nk-slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--nk-hero-overlay);
    z-index: 1;
}

.nk-slide-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    text-align: center;
    color: #fff;
    width: 90%;
    max-width: 900px;
}

.nk-slide-content.align-left {
    left: 10%;
    transform: translateY(-50%);
    text-align: left;
}
.nk-slide-content.align-right {
    left: auto;
    right: 10%;
    transform: translateY(-50%);
    text-align: right;
}

.nk-hero-eyecatch {
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--nk-accent);
    margin-bottom: 16px;
    display: block;
}

.nk-hero-title {
    font-size: clamp(2rem, 5vw, var(--nk-font-size-h1));
    font-weight: 900;
    color: #fff;
    text-shadow: 0 2px 20px rgba(0,0,0,0.5);
    margin-bottom: 20px;
    line-height: 1.2;
}

.nk-hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.3rem);
    color: rgba(255,255,255,0.9);
    margin-bottom: 40px;
    text-shadow: 0 1px 8px rgba(0,0,0,0.4);
}

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

.nk-hero-buttons.align-left { justify-content: flex-start; }
.nk-hero-buttons.align-right { justify-content: flex-end; }

/* Slider Controls */
.nk-slider-nav {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 10px;
}

.nk-slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all var(--nk-transition);
    border: none;
}

.nk-slider-dot.active {
    background: #fff;
    transform: scale(1.3);
}

.nk-slider-prev,
.nk-slider-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    background: rgba(255,255,255,0.2);
    border: 2px solid rgba(255,255,255,0.5);
    color: #fff;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all var(--nk-transition);
}

.nk-slider-prev:hover,
.nk-slider-next:hover {
    background: rgba(255,255,255,0.4);
}

.nk-slider-prev { left: 30px; }
.nk-slider-next { right: 30px; }

/* Scroll Indicator */
.nk-scroll-indicator {
    position: absolute;
    bottom: 30px;
    right: 40px;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.8);
    font-size: 0.7rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.nk-scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.8), transparent);
    animation: scrollLine 1.5s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    51% { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ================================================
   Buttons
================================================ */
.nk-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--nk-border-radius);
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all var(--nk-transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.nk-btn-primary {
    background-color: var(--nk-accent);
    color: #fff;
    border-color: var(--nk-accent);
}

.nk-btn-primary:hover {
    background-color: transparent;
    color: var(--nk-accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255,102,0,0.3);
}

.nk-btn-outline {
    background-color: transparent;
    color: #fff;
    border-color: rgba(255,255,255,0.8);
}

.nk-btn-outline:hover {
    background-color: rgba(255,255,255,0.2);
    color: #fff;
    transform: translateY(-2px);
}

.nk-btn-secondary {
    background-color: var(--nk-secondary);
    color: #fff;
    border-color: var(--nk-secondary);
}

.nk-btn-secondary:hover {
    background-color: var(--nk-primary);
    border-color: var(--nk-primary);
    color: #fff;
    transform: translateY(-2px);
}

/* ================================================
   Section Headings
================================================ */
.nk-section-header {
    text-align: center;
    margin-bottom: 60px;
}

.nk-section-eyecatch {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--nk-secondary);
    margin-bottom: 12px;
    position: relative;
}

.nk-section-eyecatch::before,
.nk-section-eyecatch::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30px;
    height: 1px;
    background-color: var(--nk-secondary);
}

.nk-section-eyecatch::before { right: calc(100% + 12px); }
.nk-section-eyecatch::after { left: calc(100% + 12px); }

.nk-section-title {
    font-size: var(--nk-font-size-h2);
    color: var(--nk-primary);
    margin-bottom: 16px;
}

.nk-section-desc {
    font-size: 1rem;
    color: var(--nk-text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* ================================================
   Cards
================================================ */
.nk-card {
    background: #fff;
    border-radius: var(--nk-border-radius);
    box-shadow: var(--nk-shadow);
    overflow: hidden;
    transition: all var(--nk-transition);
    display: flex;
    flex-direction: column;
}

.nk-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--nk-shadow-hover);
}

.nk-card-thumbnail {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;
}

.nk-card-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.nk-card:hover .nk-card-thumbnail img {
    transform: scale(1.05);
}

.nk-card-body {
    padding: 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.nk-card-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--nk-secondary);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.nk-card-title {
    font-size: 1.1rem;
    color: var(--nk-primary);
    margin-bottom: 12px;
    line-height: 1.5;
}

.nk-card-excerpt {
    font-size: 0.9rem;
    color: var(--nk-text-light);
    line-height: 1.7;
    flex: 1;
}

.nk-card-footer {
    padding: 16px 28px;
    border-top: 1px solid var(--nk-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--nk-text-light);
}

/* ================================================
   Features Grid
================================================ */
.nk-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.nk-feature-card {
    padding: 40px 32px;
    background: #fff;
    border-radius: var(--nk-border-radius);
    box-shadow: var(--nk-shadow);
    text-align: center;
    transition: all var(--nk-transition);
    border-bottom: 3px solid transparent;
}

.nk-feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--nk-shadow-hover);
    border-bottom-color: var(--nk-accent);
}

.nk-feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--nk-primary), var(--nk-secondary));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 1.8rem;
    color: #fff;
}

.nk-feature-title {
    font-size: 1.1rem;
    color: var(--nk-primary);
    margin-bottom: 12px;
}

.nk-feature-desc {
    font-size: 0.9rem;
    color: var(--nk-text-light);
    line-height: 1.7;
}

/* ================================================
   CTA Section
================================================ */
.nk-cta-section {
    background: linear-gradient(135deg, var(--nk-primary) 0%, var(--nk-secondary) 100%);
    padding: 80px 0;
    text-align: center;
    color: #fff;
}

.nk-cta-section h2 {
    color: #fff;
    font-size: 2.2rem;
    margin-bottom: 16px;
}

.nk-cta-section p {
    color: rgba(255,255,255,0.85);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

/* ================================================
   News/Blog
================================================ */
.nk-news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.nk-news-item {
    display: flex;
    gap: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--nk-border);
}

.nk-news-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 60px;
    padding-top: 4px;
}

.nk-news-month {
    font-size: 0.7rem;
    color: var(--nk-text-light);
    text-transform: uppercase;
}

.nk-news-day {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--nk-primary);
    line-height: 1;
}

/* ================================================
   Footer
================================================ */
#site-footer {
    background-color: var(--nk-footer-bg);
    color: var(--nk-footer-text);
}

.nk-footer-main {
    padding: 60px 0;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
}

.nk-footer-brand {}

.nk-footer-logo {
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nk-footer-logo img { height: 40px; width: auto; }

.nk-footer-logo-text {
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
}

.nk-footer-desc {
    font-size: 0.85rem;
    line-height: 1.8;
    color: var(--nk-footer-text);
    margin-bottom: 24px;
}

.nk-footer-social {
    display: flex;
    gap: 12px;
}

.nk-footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--nk-footer-text);
    font-size: 0.9rem;
    transition: all var(--nk-transition);
}

.nk-footer-social a:hover {
    background: var(--nk-accent);
    color: #fff;
    transform: translateY(-3px);
}

.nk-footer-col h4 {
    font-size: 0.95rem;
    color: #fff;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--nk-accent);
    display: inline-block;
}

.nk-footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nk-footer-col ul li {
    margin-bottom: 10px;
}

.nk-footer-col ul li a {
    color: var(--nk-footer-text);
    font-size: 0.85rem;
    transition: all var(--nk-transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nk-footer-col ul li a::before {
    content: '›';
    color: var(--nk-accent);
    font-weight: 700;
}

.nk-footer-col ul li a:hover {
    color: #fff;
    transform: translateX(4px);
}

.nk-footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.nk-footer-copyright {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
}

.nk-footer-links {
    display: flex;
    gap: 24px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.nk-footer-links a {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
    transition: color var(--nk-transition);
}

.nk-footer-links a:hover { color: rgba(255,255,255,0.9); }

/* ================================================
   Sidebar
================================================ */
.nk-content-area {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
    padding: 60px 0;
}

.nk-content-area.no-sidebar {
    grid-template-columns: 1fr;
}

.nk-sidebar {}

.nk-widget {
    background: #fff;
    border-radius: var(--nk-border-radius);
    box-shadow: var(--nk-shadow);
    overflow: hidden;
    margin-bottom: 32px;
}

.nk-widget-title {
    padding: 18px 24px;
    background: linear-gradient(135deg, var(--nk-primary), var(--nk-secondary));
    color: #fff;
    font-size: 0.95rem;
    font-weight: 700;
    margin: 0;
}

.nk-widget-content {
    padding: 24px;
}

/* ================================================
   Single Post
================================================ */
.nk-article-header {
    margin-bottom: 40px;
}

.nk-article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.nk-article-category {
    display: inline-block;
    padding: 4px 14px;
    background: var(--nk-secondary);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 3px;
    text-transform: uppercase;
}

.nk-article-date {
    font-size: 0.85rem;
    color: var(--nk-text-light);
}

.nk-article-title {
    font-size: 2rem;
    color: var(--nk-primary);
    margin-bottom: 24px;
    line-height: 1.4;
}

.nk-article-thumbnail {
    border-radius: var(--nk-border-radius);
    overflow: hidden;
    margin-bottom: 40px;
}

.nk-article-thumbnail img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.nk-article-content {
    font-size: 1rem;
    line-height: 1.9;
}

.nk-article-content h2 {
    font-size: 1.6rem;
    padding-left: 16px;
    border-left: 4px solid var(--nk-accent);
    margin: 40px 0 20px;
}

.nk-article-content h3 {
    font-size: 1.2rem;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--nk-border);
    margin: 32px 0 16px;
}

.nk-article-content blockquote {
    background: var(--nk-bg-secondary);
    border-left: 4px solid var(--nk-secondary);
    padding: 20px 24px;
    margin: 24px 0;
    border-radius: 0 var(--nk-border-radius) var(--nk-border-radius) 0;
}

/* ================================================
   Page Header / Breadcrumb
================================================ */
.nk-page-header {
    /* カスタマイザーの --nk-page-header-bg / --nk-page-header-bg2 変数で上書き可能 */
    background: linear-gradient(135deg, var(--nk-page-header-bg, var(--nk-primary)) 0%, var(--nk-page-header-bg2, var(--nk-secondary)) 100%);
    padding: 60px 0;
    margin-top: 70px;
    color: var(--nk-page-header-text, #ffffff);
    position: relative;
    overflow: hidden;
}

.nk-page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
}

.nk-page-title {
    font-size: 2.2rem;
    color: var(--nk-page-header-text, #ffffff);
    margin-bottom: 12px;
}

.nk-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    padding: 0;
    margin: 0;
    flex-wrap: wrap;
}

.nk-breadcrumb li {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.7);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nk-breadcrumb li::after {
    content: '/';
    color: rgba(255,255,255,0.4);
}

.nk-breadcrumb li:last-child::after { display: none; }

.nk-breadcrumb li a {
    color: rgba(255,255,255,0.8);
    transition: color var(--nk-transition);
}

.nk-breadcrumb li a:hover { color: #fff; }

/* ================================================
   404 Page
================================================ */
.nk-404 {
    text-align: center;
    padding: 120px 0;
}

.nk-404-code {
    font-size: 8rem;
    font-weight: 900;
    color: var(--nk-border);
    line-height: 1;
    margin-bottom: 20px;
}

/* ================================================
   Loading Screen
================================================ */
#nk-loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--nk-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#nk-loading.hidden {
    opacity: 0;
    visibility: hidden;
}

.nk-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    color: #fff;
}

.nk-loader-bar {
    width: 200px;
    height: 3px;
    background: rgba(255,255,255,0.2);
    border-radius: 2px;
    overflow: hidden;
}

.nk-loader-bar-inner {
    height: 100%;
    background: var(--nk-accent);
    width: 0%;
    animation: loading 1.5s ease forwards;
}

@keyframes loading {
    to { width: 100%; }
}

/* ================================================
   Animations
================================================ */
.nk-fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.nk-fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

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

/* ================================================
   Back to Top
================================================ */
#nk-back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 46px;
    height: 46px;
    background: var(--nk-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--nk-transition);
    z-index: 500;
    border: none;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}

#nk-back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

#nk-back-to-top:hover {
    background: var(--nk-accent);
    transform: translateY(-3px);
}

/* ================================================
   Cookie Banner
================================================ */
#nk-cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(26, 26, 46, 0.97);
    color: #ccc;
    padding: 20px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    z-index: 9999;
    flex-wrap: wrap;
    font-size: 0.85rem;
    transform: translateY(100%);
    transition: transform 0.5s ease;
}

#nk-cookie-banner.visible {
    transform: translateY(0);
}

/* ================================================
   WordPress Core Alignment
================================================ */
.alignleft { float: left; margin: 0 1.5rem 1rem 0; }
.alignright { float: right; margin: 0 0 1rem 1.5rem; }
.aligncenter { display: block; margin: 0 auto 1rem; }
.alignwide { max-width: 100%; }
.alignfull { width: 100vw; margin-left: calc(50% - 50vw); }

/* ================================================
   Sidebar Color Variables
   :root で --nk-sidebar-*-color を定義済み。
   ここでは直接変数を使用してスタイルを適用。
================================================ */
.nk-sidebar .nk-widget {
    background-color: var(--nk-sidebar-bg-color, #ffffff);
    border: 1px solid var(--nk-sidebar-border-color, var(--nk-border));
    color: var(--nk-sidebar-text-color, var(--nk-text));
}

.nk-sidebar .nk-widget-title {
    background: var(--nk-sidebar-widget-title-bg-color, linear-gradient(135deg, var(--nk-primary), var(--nk-secondary)));
    color: var(--nk-sidebar-widget-title-text-color, #ffffff);
}

/* ================================================
   Button Color Variables
   :root で --nk-btn-* を定義済み。カスタマイザーで変更可能。
================================================ */
.nk-btn-primary {
    background-color: var(--nk-btn-primary-bg);
    color: var(--nk-btn-primary-text);
    border-color: var(--nk-btn-primary-bg);
}

.nk-btn-primary:hover {
    background-color: transparent;
    color: var(--nk-btn-primary-bg);
    border-color: var(--nk-btn-primary-bg);
}

.nk-btn-secondary {
    background-color: var(--nk-btn-secondary-bg);
    color: #ffffff;
    border-color: var(--nk-btn-secondary-bg);
}

.nk-btn-secondary:hover {
    background-color: var(--nk-primary);
    border-color: var(--nk-primary);
    color: #ffffff;
}

/* Header CTA button color override */
.nk-header-cta {
    background-color: var(--nk-btn-cta-bg);
    color: var(--nk-btn-cta-text) !important;
}

.nk-header-cta:hover {
    background-color: var(--nk-btn-cta-hover-bg);
}

/* ================================================
   Main content area color
================================================ */
.nk-main {
    /* --nk-main-bg が空の場合は透明（親の背景を継承） */
    background-color: var(--nk-main-bg);
    color: var(--nk-main-text, var(--nk-text));
}

/* ================================================
   Section background overrides
================================================ */
.nk-section--bg {
    background-color: var(--nk-section-alt-bg);
}

/* ================================================
   Card color variables
   :root で --nk-card-bg, --nk-card-title-color を定義済み
================================================ */
.nk-card {
    background-color: var(--nk-card-bg);
}

.nk-card-title {
    color: var(--nk-card-title-color);
}

/* ================================================
   Custom Font Face (uploaded fonts)
================================================ */
/* Font-face declarations are injected dynamically via
   nktech_custom_font_css() in customizer-css.php */

/* ================================================
   Responsive — PC First (≥1200px default)
================================================ */

/* ---- Large Desktop: 1440px+ ---- */
@media (min-width: 1440px) {
    .nk-container {
        padding: 0 40px;
    }
    .nk-slider {
        min-height: 680px;
    }
    .nk-hero-title {
        font-size: clamp(2.5rem, 4vw, var(--nk-font-size-h1));
    }
}

/* ---- Desktop: 1200px - 1439px (base styles apply) ---- */

/* ---- Tablet Landscape: 1024px - 1199px ---- */
@media (max-width: 1199px) {
    .nk-container {
        padding: 0 28px;
    }
    .nk-footer-main {
        grid-template-columns: 1.5fr 1fr 1fr;
        gap: 36px;
    }
    .nk-features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .nk-news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ---- Tablet Portrait: 768px - 1023px ---- */
@media (max-width: 1023px) {
    :root {
        --nk-font-size-h1: 2.4rem;
        --nk-font-size-h2: 1.9rem;
        --nk-font-size-h3: 1.3rem;
    }

    .nk-container {
        padding: 0 24px;
    }

    .nk-section {
        padding: 64px 0;
    }

    /* Header */
    .nk-header-inner {
        height: 64px !important;
    }

    #nk-hero,
    .nk-page-header {
        margin-top: 64px !important;
    }

    /* Navigation collapses */
    .nk-hamburger {
        display: flex;
    }

    #site-navigation {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--nk-header-bg);
        flex-direction: column;
        align-items: stretch;
        padding: 0 20px;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                    padding 0.3s ease;
        z-index: 999;
        box-shadow: 0 8px 32px rgba(0,0,0,0.3);
    }

    #site-navigation.open {
        max-height: 80vh;
        overflow-y: auto;
        padding: 12px 20px 20px;
    }

    .nk-nav-menu {
        flex-direction: column;
        width: 100%;
    }

    .nk-nav-menu > li > a {
        padding: 14px 12px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
        font-size: 0.95rem;
    }

    .nk-nav-menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: rgba(0,0,0,0.15);
        border-radius: 0;
        padding: 0 0 0 16px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .nk-nav-menu li.open .sub-menu {
        max-height: 500px;
    }

    .nk-nav-menu .sub-menu li a {
        color: rgba(255,255,255,0.8);
        padding: 10px 12px;
        border-bottom: 1px solid rgba(255,255,255,0.05);
    }

    .nk-header-cta {
        margin: 12px 0 4px;
        text-align: center;
        justify-content: center;
    }

    /* Footer */
    .nk-footer-main {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .nk-footer-brand {
        grid-column: 1 / -1;
    }

    /* Content */
    .nk-content-area {
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 48px 0;
    }

    .nk-sidebar {
        order: 2; /* タブレット時もコンテンツの後ろに配置 */
    }

    /* Slider */
    .nk-slider {
        height: 75vh;
        min-height: 480px;
    }

    .nk-slider-prev { left: 16px; }
    .nk-slider-next { right: 16px; }

    /* Grid */
    .nk-features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .nk-news-grid {
        grid-template-columns: 1fr;
    }

    /* Layout rows */
    .nk-col-3 { flex: 1 1 calc(50% - 16px); }
    .nk-col-4 { flex: 1 1 calc(50% - 16px); }

    /* Article */
    .nk-article-thumbnail img {
        height: 300px;
    }
    .nk-page-title {
        font-size: 1.8rem;
    }
}

/* ---- Mobile: 480px - 767px ---- */
@media (max-width: 767px) {
    :root {
        --nk-font-size-h1: 1.9rem;
        --nk-font-size-h2: 1.55rem;
        --nk-font-size-h3: 1.2rem;
        --nk-font-size-base: 15px;
        --nk-line-height: 1.75;
    }

    .nk-container {
        padding: 0 16px;
    }

    .nk-section {
        padding: 48px 0;
    }

    /* Header */
    .nk-header-inner {
        height: 58px !important;
    }

    #nk-hero,
    .nk-page-header {
        margin-top: 58px !important;
    }

    #site-navigation {
        top: 58px;
    }

    /* Slider */
    .nk-slider {
        height: 65vh;
        min-height: 400px;
    }

    .nk-slider-prev,
    .nk-slider-next {
        display: none;
    }

    .nk-hero-title {
        font-size: clamp(1.4rem, 6vw, 2rem);
        margin-bottom: 12px;
    }

    .nk-hero-subtitle {
        font-size: 0.95rem;
        margin-bottom: 24px;
    }

    .nk-hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }

    .nk-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
        padding: 13px 24px;
    }

    /* Footer */
    .nk-footer-main {
        grid-template-columns: 1fr;
        gap: 28px;
        padding: 40px 0;
    }

    .nk-footer-brand {
        grid-column: auto;
    }

    .nk-footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 12px;
        padding: 18px 0;
    }

    .nk-footer-links {
        gap: 16px;
        flex-wrap: wrap;
        justify-content: center;
    }

    /* Layout */
    .nk-row {
        flex-direction: column;
        gap: 20px;
    }

    .nk-col-2,
    .nk-col-3,
    .nk-col-4 {
        flex: 1 1 100%;
    }

    /* Features */
    .nk-features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .nk-feature-card {
        padding: 28px 20px;
    }

    /* Cards */
    .nk-news-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .nk-card-body {
        padding: 20px;
    }

    /* Article */
    .nk-article-thumbnail img {
        height: 220px;
    }

    .nk-page-title {
        font-size: 1.5rem;
    }

    .nk-page-header {
        padding: 40px 0;
    }

    /* Section headers */
    .nk-section-header {
        margin-bottom: 36px;
    }

    .nk-section-eyecatch::before,
    .nk-section-eyecatch::after {
        display: none;
    }

    /* Meta */
    .nk-article-meta {
        gap: 10px;
    }

    /* Pagination */
    .nk-pagination-list {
        gap: 6px;
        flex-wrap: wrap;
    }

    /* Cookie banner */
    #nk-cookie-banner {
        padding: 16px 20px;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    /* 404 */
    .nk-404-code {
        font-size: 5rem;
    }

    /* Sidebar under content */
    .nk-sidebar {
        order: 1;
    }

    /* Back to top */
    #nk-back-to-top {
        bottom: 20px;
        right: 16px;
        width: 40px;
        height: 40px;
        font-size: 0.95rem;
    }
}

/* ---- Small Mobile: ≤479px ---- */
@media (max-width: 479px) {
    :root {
        --nk-font-size-h1: 1.65rem;
        --nk-font-size-h2: 1.35rem;
        --nk-font-size-h3: 1.1rem;
        --nk-font-size-base: 14px;
    }

    .nk-container {
        padding: 0 12px;
    }

    .nk-section {
        padding: 36px 0;
    }

    .nk-slider {
        height: 55vh;
        min-height: 300px;
    }

    .nk-hero-title {
        font-size: clamp(1.2rem, 7vw, 1.65rem);
    }

    .nk-btn {
        max-width: 100%;
        font-size: 0.9rem;
        padding: 12px 20px;
    }

    .nk-article-thumbnail img {
        height: 180px;
    }

    .nk-cta-section {
        padding: 48px 0;
    }

    .nk-cta-section h2 {
        font-size: 1.5rem;
    }

    .nk-footer-social a {
        width: 32px;
        height: 32px;
        font-size: 0.8rem;
    }

    .nk-meta-grid,
    .nktech-meta-grid {
        grid-template-columns: 1fr !important;
    }
}

/* ---- Touch device adjustments ---- */
@media (hover: none) {
    .nk-card:hover {
        transform: none;
        box-shadow: var(--nk-shadow);
    }
    .nk-feature-card:hover {
        transform: none;
    }
    .nk-nav-menu li:hover .sub-menu {
        opacity: 0;
        visibility: hidden;
    }
}

/* ================================================
   Accessibility
================================================ */
:focus-visible {
    outline: 3px solid var(--nk-accent);
    outline-offset: 2px;
}

.screen-reader-text {
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    word-wrap: normal !important;
}

.skip-link {
    position: absolute;
    left: -9999em;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
    z-index: 999999;
    background: var(--nk-accent);
    color: #fff;
    padding: 12px 24px;
    font-size: 0.9rem;
    font-weight: 700;
}

.skip-link:focus {
    left: 6px;
    top: 6px;
    width: auto;
    height: auto;
}

/* ================================================
   Print
================================================ */
@media print {
    #site-header,
    #nk-hero,
    #nk-back-to-top,
    #nk-loading,
    #nk-cookie-banner,
    .nk-hamburger,
    #site-navigation,
    .nk-sidebar,
    .nk-share-buttons { display: none !important; }
    body { font-size: 12pt; color: #000; background: #fff; }
    a { color: #000; text-decoration: underline; }
    .nk-container { max-width: 100%; padding: 0; }
    .nk-page-header { background: #eee !important; color: #000 !important; }
    .nk-page-title { color: #000 !important; }
    .nk-content-area { grid-template-columns: 1fr !important; }
}

/* ================================================
   Dark Mode Preparation (Optional)
================================================ */
@media (prefers-color-scheme: dark) {
    /* Will be activated when nktech_dark_mode setting is true */
    body.nktech-dark-mode {
        --nk-bg: #121212;
        --nk-bg-secondary: #1e1e1e;
        --nk-text: #e0e0e0;
        --nk-text-light: #aaaaaa;
        --nk-border: #333333;
        --nk-card-bg: #1e1e1e;
    }
}

/* ================================================
   DEMOページ専用スタイル (page-demo.php)
   Template Name: DEMOページ（フルデモ）
================================================ */

/* -- サービスカードグリッド -- */
.nk-demo-services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.nk-service-card {
    background: var(--nk-card-bg, #fff);
    border-radius: var(--nk-border-radius);
    box-shadow: var(--nk-shadow);
    overflow: hidden;
    transition: transform var(--nk-transition), box-shadow var(--nk-transition);
    display: flex;
    flex-direction: column;
}

.nk-service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--nk-shadow-hover);
}

.nk-service-card__bar {
    height: 4px;
    flex-shrink: 0;
}

.nk-service-card__body {
    padding: 32px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.nk-service-card__icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.nk-service-card__title {
    font-size: 1.05rem;
    color: var(--nk-primary);
    margin-bottom: 12px;
    line-height: 1.5;
}

.nk-service-card__desc {
    font-size: 0.88rem;
    color: var(--nk-text-light);
    line-height: 1.8;
    margin-bottom: 20px;
    flex: 1;
}

.nk-service-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.nk-service-card__tag {
    font-size: 0.72rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 20px;
}

.nk-service-card__link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 700;
    text-decoration: none;
    transition: gap var(--nk-transition);
}

.nk-service-card__link:hover {
    gap: 10px;
}

/* -- 実績カードグリッド -- */
.nk-works-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.nk-work-card {
    background: var(--nk-card-bg, #fff);
    border-radius: var(--nk-border-radius);
    box-shadow: var(--nk-shadow);
    overflow: hidden;
    transition: transform var(--nk-transition), box-shadow var(--nk-transition);
}

.nk-work-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--nk-shadow-hover);
}

.nk-work-card__header {
    padding: 28px;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.nk-work-card__deco {
    position: absolute;
    right: -20px;
    bottom: -20px;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    pointer-events: none;
}

.nk-work-card__cat {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.75);
    display: block;
    margin-bottom: 8px;
}

.nk-work-card__title {
    font-size: 1rem;
    color: #fff;
    margin: 0;
    line-height: 1.5;
}

.nk-work-card__body {
    padding: 24px;
}

.nk-work-card__client {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--nk-text);
}

.nk-work-card__result {
    background: var(--nk-bg-secondary);
    border-left: 3px solid var(--nk-accent);
    padding: 14px 16px;
    border-radius: 0 4px 4px 0;
    margin-bottom: 16px;
}

.nk-work-card__result-label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--nk-accent);
    margin-bottom: 4px;
}

.nk-work-card__result-text {
    font-size: 0.88rem;
    color: var(--nk-text);
    margin: 0;
    line-height: 1.6;
}

.nk-work-card__period {
    font-size: 0.8rem;
    color: var(--nk-text-light);
    margin: 0;
}

.nk-work-card__period i {
    margin-right: 6px;
}

/* -- ニュース カテゴリーバッジ -- */
.nk-news-category-badge {
    display: inline-block;
    padding: 3px 10px;
    background: var(--nk-secondary);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 700;
    border-radius: 3px;
    margin-bottom: 8px;
}

/* -- FAQ アコーディオン -- */
.nk-faq-list {
    max-width: 860px;
    margin: 0 auto;
}

.nk-faq-item {
    margin-bottom: 16px;
    border-radius: var(--nk-border-radius);
    overflow: hidden;
    background: var(--nk-card-bg, #fff);
    box-shadow: var(--nk-shadow);
}

.nk-faq-summary {
    padding: 20px 24px;
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 16px;
    font-weight: 700;
    color: var(--nk-primary);
    transition: background var(--nk-transition);
}

.nk-faq-summary::-webkit-details-marker { display: none; }

.nk-faq-summary:hover {
    background: var(--nk-bg-secondary);
}

.nk-faq-q-badge {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--nk-secondary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 900;
}

.nk-faq-question {
    flex: 1;
    font-size: 0.95rem;
    line-height: 1.5;
}

.nk-faq-icon {
    color: var(--nk-text-light);
    font-size: 0.8rem;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.nk-faq-answer {
    padding: 0 24px 20px;
    border-top: 1px solid var(--nk-border);
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding-top: 16px;
    margin-top: 0;
}

/* details[open] では border-top が summary の下に出るのでパディング調整 */
.nk-faq-item[open] .nk-faq-answer {
    padding-top: 16px;
}

.nk-faq-a-badge {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--nk-accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 900;
    margin-top: 4px;
}

.nk-faq-answer p {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--nk-text);
    margin: 4px 0 0;
    flex: 1;
}

/* -- CTAボタン群 -- */
.nk-cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ================================================
   DEMOページ レスポンシブ
================================================ */
@media (max-width: 767px) {
    .nk-demo-services-grid {
        grid-template-columns: 1fr;
    }
    .nk-works-grid {
        grid-template-columns: 1fr;
    }
    .nk-service-card__body {
        padding: 24px;
    }
    .nk-faq-summary {
        padding: 16px 20px;
        gap: 12px;
    }
    .nk-faq-answer {
        padding: 0 20px 16px;
    }
    .nk-cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}