/*
Theme Name: Sports Engineering Pro
Theme URI: https://your-company.com
Author: Your Company
Author URI: https://your-company.com
Description: 專業運動工程公司形象網站佈景主題，包含首頁、關於公司、案例展示、商品區、聯絡表單等完整功能。所有文字皆可在 WordPress 後台直接修改。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: sports-engineering-pro
Tags: business, portfolio, one-page, custom-colors, custom-menu, featured-images, full-width-template, post-formats, sticky-post, threaded-comments, translation-ready
*/

/* ============================================================
   CSS 自訂變數 - 修改這裡可以改變整個網站的色彩配置
   ============================================================ */
:root {
    /* 主色調 */
    --color-primary: #C8922A;       /* 金色主色 - 可修改 */
    --color-primary-dark: #A6751F;  /* 深金色 */
    --color-primary-light: #E8B84B; /* 淺金色 */

    /* 深色背景 */
    --color-dark: #0D0D0D;          /* 主背景色 */
    --color-dark-2: #1A1A1A;        /* 次背景色 */
    --color-dark-3: #252525;        /* 卡片背景色 */
    --color-dark-4: #333333;        /* 邊框色 */

    /* 文字顏色 */
    --color-text: #F0F0F0;          /* 主要文字 */
    --color-text-muted: #999999;    /* 次要文字 */
    --color-text-light: #CCCCCC;    /* 淺色文字 */

    /* 字型 */
    --font-heading: 'Bebas Neue', sans-serif;   /* 標題字型 */
    --font-body: 'Noto Sans TC', sans-serif;    /* 內文字型 */
    --font-accent: 'Oswald', sans-serif;        /* 強調字型 */

    /* 間距 */
    --section-padding: 100px;
    --container-max: 1280px;

    /* 動畫 */
    --transition: all 0.3s ease;
    --transition-slow: all 0.6s ease;
}

/* ============================================================
   基礎重置
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: var(--font-body);
    background-color: var(--color-dark);
    color: var(--color-text);
    line-height: 1.7;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ============================================================
   排版
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: 1.1;
    letter-spacing: 0.02em;
}
h1 { font-size: clamp(3rem, 8vw, 7rem); }
h2 { font-size: clamp(2rem, 5vw, 4rem); }
h3 { font-size: clamp(1.4rem, 3vw, 2rem); }
h4 { font-size: 1.3rem; }
p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

/* ============================================================
   容器
   ============================================================ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 40px;
}
@media (max-width: 768px) { .container { padding: 0 20px; } }

/* ============================================================
   按鈕
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    font-family: var(--font-accent);
    font-size: 0.95rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.btn-primary {
    background: var(--color-primary);
    color: var(--color-dark);
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}
.btn-primary:hover {
    background: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(200, 146, 42, 0.4);
}
.btn-outline {
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}
.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-dark);
}

/* ============================================================
   區塊標題
   ============================================================ */
.section-label {
    font-family: var(--font-accent);
    font-size: 0.8rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.section-label::before {
    content: '';
    display: block;
    width: 30px;
    height: 1px;
    background: var(--color-primary);
}
.section-title {
    color: var(--color-text);
    margin-bottom: 20px;
}
.section-title span { color: var(--color-primary); }
.section-desc {
    color: var(--color-text-muted);
    max-width: 600px;
    font-size: 1.05rem;
    line-height: 1.8;
}

/* ============================================================
   導覽列
   ============================================================ */
#site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0;
    transition: var(--transition-slow);
}
#site-header.scrolled {
    background: rgba(13,13,13,0.97);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-dark-4);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 40px;
}
.site-logo {
    display: flex;
    flex-direction: column;
    line-height: 1;
}
.logo-main {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    color: var(--color-text);
    letter-spacing: 0.1em;
}
.logo-main span { color: var(--color-primary); }
.logo-sub {
    font-family: var(--font-accent);
    font-size: 0.55rem;
    letter-spacing: 0.35em;
    color: var(--color-text-muted);
    text-transform: uppercase;
    margin-top: 3px;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 36px;
}
.main-nav a {
    font-family: var(--font-accent);
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    position: relative;
    padding-bottom: 4px;
}
.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-primary);
    transition: var(--transition);
}
.main-nav a:hover,
.main-nav a.active { color: var(--color-primary); }
.main-nav a:hover::after,
.main-nav a.active::after { width: 100%; }
.nav-cta {
    padding: 10px 24px;
    font-family: var(--font-accent);
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    background: var(--color-primary);
    color: var(--color-dark);
    clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
    transition: var(--transition);
}
.nav-cta:hover { background: var(--color-primary-light); }

/* 漢堡選單 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
}
.menu-toggle span {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}
.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(5px, -5px); }

/* ============================================================
   Hero 區塊
   ============================================================ */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--color-dark);
}
.hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('assets/images/hero-bg.jpg'); /* 在此替換首頁背景圖 */
    background-size: cover;
    background-position: center;
    opacity: 0.25;
    transform: scale(1.05);
    animation: heroZoom 20s ease-in-out infinite alternate;
}
@keyframes heroZoom {
    from { transform: scale(1.05); }
    to { transform: scale(1.15); }
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13,13,13,0.95) 0%, rgba(13,13,13,0.5) 60%, rgba(200,146,42,0.1) 100%);
}
.hero-grid-lines {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(200,146,42,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(200,146,42,0.05) 1px, transparent 1px);
    background-size: 60px 60px;
}
.hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 120px 40px 80px;
    width: 100%;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(200,146,42,0.15);
    border: 1px solid rgba(200,146,42,0.3);
    padding: 8px 18px;
    margin-bottom: 32px;
    font-family: var(--font-accent);
    font-size: 0.75rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--color-primary);
}
.hero-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}
.hero-title {
    font-size: clamp(3.5rem, 10vw, 8rem);
    line-height: 0.95;
    margin-bottom: 28px;
    max-width: 900px;
}
.hero-title .line-1 { display: block; color: var(--color-text); }
.hero-title .line-2 {
    display: block;
    color: var(--color-primary);
    -webkit-text-stroke: 0px;
}
.hero-title .line-3 {
    display: block;
    color: transparent;
    -webkit-text-stroke: 1px rgba(240,240,240,0.3);
}
.hero-desc {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    max-width: 520px;
    margin-bottom: 44px;
    line-height: 1.8;
}
.hero-actions {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}
.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 80px;
    padding-top: 40px;
    border-top: 1px solid var(--color-dark-4);
}
.stat-item { }
.stat-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    color: var(--color-primary);
    line-height: 1;
}
.stat-number span { font-size: 1.5rem; }
.stat-label {
    font-family: var(--font-accent);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-top: 6px;
}
.hero-scroll {
    position: absolute;
    bottom: 40px;
    right: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    font-family: var(--font-accent);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    writing-mode: vertical-rl;
    z-index: 1;
}
.hero-scroll::after {
    content: '';
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scrollLine 2s 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; }
}

/* ============================================================
   服務特色
   ============================================================ */
#features {
    padding: 80px 0;
    background: var(--color-dark-2);
    border-top: 1px solid var(--color-dark-4);
    border-bottom: 1px solid var(--color-dark-4);
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--color-dark-4);
}
.feature-card {
    background: var(--color-dark-2);
    padding: 40px 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}
.feature-card:hover { background: var(--color-dark-3); }
.feature-card:hover::before { width: 100%; }
.feature-icon {
    width: 56px;
    height: 56px;
    background: rgba(200,146,42,0.1);
    border: 1px solid rgba(200,146,42,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
    clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}
.feature-title {
    font-family: var(--font-accent);
    font-size: 1rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text);
    margin-bottom: 10px;
}
.feature-desc {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ============================================================
   關於公司
   ============================================================ */
#about {
    padding: var(--section-padding) 0;
    background: var(--color-dark);
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}
.about-image-wrap {
    position: relative;
}
.about-main-img {
    width: 100%;
    height: 560px;
    object-fit: cover;
    clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}
.about-accent-img {
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 200px;
    height: 200px;
    object-fit: cover;
    border: 4px solid var(--color-dark);
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}
.about-badge {
    position: absolute;
    top: 30px;
    left: -20px;
    background: var(--color-primary);
    color: var(--color-dark);
    padding: 12px 20px;
    clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}
.about-badge-year {
    font-family: var(--font-heading);
    font-size: 2rem;
    line-height: 1;
}
.about-badge-text {
    font-family: var(--font-accent);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}
.about-content { }
.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 36px;
    margin-bottom: 40px;
}
.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}
.highlight-icon {
    width: 20px;
    height: 20px;
    background: var(--color-primary);
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
    flex-shrink: 0;
    margin-top: 3px;
}
.highlight-text {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* ============================================================
   案例展示
   ============================================================ */
#projects {
    padding: var(--section-padding) 0;
    background: var(--color-dark-2);
}
.projects-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 60px;
    gap: 20px;
}
.projects-filter {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}
.filter-btn {
    padding: 8px 20px;
    font-family: var(--font-accent);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    border: 1px solid var(--color-dark-4);
    transition: var(--transition);
}
.filter-btn.active,
.filter-btn:hover {
    background: var(--color-primary);
    color: var(--color-dark);
    border-color: var(--color-primary);
}
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
}
.project-card {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
    background: var(--color-dark-3);
    cursor: pointer;
}
.project-card.featured {
    grid-column: span 2;
    aspect-ratio: auto;
}
.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(13,13,13,0.95) 0%, rgba(13,13,13,0.3) 60%, transparent 100%);
    opacity: 0;
    transition: var(--transition-slow);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 32px;
}
.project-card:hover .project-img { transform: scale(1.08); }
.project-card:hover .project-overlay { opacity: 1; }
.project-cat {
    font-family: var(--font-accent);
    font-size: 0.7rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 8px;
}
.project-name {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    color: var(--color-text);
    line-height: 1.1;
}
.project-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 10px;
}
.project-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    font-family: var(--font-accent);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-primary);
}
.project-link::after {
    content: '→';
    transition: var(--transition);
}
.project-link:hover::after { transform: translateX(4px); }

/* ============================================================
   商品區
   ============================================================ */
#products {
    padding: var(--section-padding) 0;
    background: var(--color-dark);
}
.products-intro {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 60px;
    gap: 20px;
}
.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2px;
}
.product-card {
    background: var(--color-dark-2);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    group: true;
}
.product-card:hover { transform: translateY(-4px); box-shadow: 0 20px 60px rgba(0,0,0,0.5); }
.product-img-wrap {
    position: relative;
    aspect-ratio: 3/4;
    overflow: hidden;
    background: var(--color-dark-3);
}
.product-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.product-card:hover .product-img { transform: scale(1.05); }
.product-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--color-primary);
    color: var(--color-dark);
    padding: 4px 12px;
    font-family: var(--font-accent);
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 6px 100%, 0 calc(100% - 6px));
}
.product-info {
    padding: 24px 20px;
}
.product-cat {
    font-family: var(--font-accent);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 8px;
}
.product-name {
    font-family: var(--font-accent);
    font-size: 1rem;
    letter-spacing: 0.05em;
    color: var(--color-text);
    margin-bottom: 10px;
}
.product-desc {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 16px;
}
.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.product-price {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--color-primary);
}
.product-price small {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}
.product-btn {
    width: 36px;
    height: 36px;
    background: var(--color-primary);
    color: var(--color-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 6px 100%, 0 calc(100% - 6px));
    transition: var(--transition);
}
.product-btn:hover { background: var(--color-primary-light); transform: scale(1.1); }

/* ============================================================
   合作夥伴
   ============================================================ */
#partners {
    padding: 60px 0;
    background: var(--color-dark-2);
    border-top: 1px solid var(--color-dark-4);
    border-bottom: 1px solid var(--color-dark-4);
}
.partners-label {
    text-align: center;
    font-family: var(--font-accent);
    font-size: 0.7rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 40px;
}
.partners-track {
    display: flex;
    gap: 60px;
    align-items: center;
    overflow: hidden;
}
.partner-item {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--color-dark-4);
    letter-spacing: 0.1em;
    white-space: nowrap;
    transition: var(--transition);
    flex-shrink: 0;
}
.partner-item:hover { color: var(--color-primary); }

/* ============================================================
   聯絡我們
   ============================================================ */
#contact {
    padding: var(--section-padding) 0;
    background: var(--color-dark);
    position: relative;
    overflow: hidden;
}
#contact::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, transparent, rgba(200,146,42,0.03));
    pointer-events: none;
}
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 80px;
}
.contact-info { }
.contact-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 40px;
}
.contact-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: var(--color-dark-2);
    border-left: 2px solid var(--color-primary);
    transition: var(--transition);
}
.contact-card:hover { background: var(--color-dark-3); transform: translateX(4px); }
.contact-card-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
    margin-top: 2px;
}
.contact-card-label {
    font-family: var(--font-accent);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 4px;
}
.contact-card-value {
    color: var(--color-text);
    font-size: 0.95rem;
}
.contact-form-wrap { }
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-label {
    font-family: var(--font-accent);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}
.form-control {
    background: var(--color-dark-2);
    border: 1px solid var(--color-dark-4);
    color: var(--color-text);
    padding: 14px 18px;
    font-size: 0.9rem;
    transition: var(--transition);
    outline: none;
    clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}
.form-control:focus {
    border-color: var(--color-primary);
    background: var(--color-dark-3);
    box-shadow: 0 0 0 3px rgba(200,146,42,0.1);
}
textarea.form-control { min-height: 140px; resize: vertical; }
.form-submit { margin-top: 8px; }

/* ============================================================
   頁腳
   ============================================================ */
#site-footer {
    background: var(--color-dark-2);
    border-top: 1px solid var(--color-dark-4);
    padding: 80px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}
.footer-brand { }
.footer-logo { margin-bottom: 20px; }
.footer-desc {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 28px;
}
.footer-socials {
    display: flex;
    gap: 12px;
}
.social-link {
    width: 38px;
    height: 38px;
    background: var(--color-dark-3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--color-text-muted);
    border: 1px solid var(--color-dark-4);
    clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 6px 100%, 0 calc(100% - 6px));
    transition: var(--transition);
}
.social-link:hover {
    background: var(--color-primary);
    color: var(--color-dark);
    border-color: var(--color-primary);
}
.footer-col-title {
    font-family: var(--font-accent);
    font-size: 0.8rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 20px;
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-links a::before {
    content: '›';
    color: var(--color-primary);
    font-size: 1.1rem;
    line-height: 1;
}
.footer-links a:hover { color: var(--color-text); transform: translateX(4px); }
.footer-bottom {
    border-top: 1px solid var(--color-dark-4);
    padding: 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-copyright {
    color: var(--color-text-muted);
    font-size: 0.82rem;
}
.footer-bottom-links {
    display: flex;
    gap: 24px;
}
.footer-bottom-links a {
    color: var(--color-text-muted);
    font-size: 0.82rem;
    transition: var(--transition);
}
.footer-bottom-links a:hover { color: var(--color-primary); }

/* ============================================================
   動畫效果
   ============================================================ */
.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}
.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }
.fade-up-delay-4 { transition-delay: 0.4s; }

/* ============================================================
   響應式設計
   ============================================================ */
@media (max-width: 1100px) {
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
    :root { --section-padding: 70px; }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .about-accent-img { display: none; }
    .projects-grid { grid-template-columns: repeat(2, 1fr); }
    .project-card.featured { grid-column: span 1; }
    .contact-grid { grid-template-columns: 1fr; gap: 50px; }
    .projects-header { flex-direction: column; align-items: flex-start; }
    .products-intro { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 768px) {
    .header-inner { padding: 0 20px; }
    .main-nav { display: none; }
    .menu-toggle { display: flex; }
    .main-nav.open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(13,13,13,0.98);
        padding: 40px 30px;
        gap: 28px;
        backdrop-filter: blur(10px);
        z-index: 999;
        align-items: flex-start;
    }
    .main-nav.open a {
        font-size: 1.2rem;
    }
    .nav-cta { display: none; }
    .hero-stats { gap: 28px; flex-wrap: wrap; }
    .features-grid { grid-template-columns: 1fr; }
    .projects-grid { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: 1fr 1fr; gap: 1px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .form-row { grid-template-columns: 1fr; }
    .hero-content { padding: 100px 20px 60px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
    .products-grid { grid-template-columns: 1fr; }
    .about-highlights { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; align-items: flex-start; }
}

/* ============================================================
   WooCommerce 基礎相容樣式
   ============================================================ */
.woocommerce .button,
.woocommerce button.button {
    background: var(--color-primary) !important;
    color: var(--color-dark) !important;
    font-family: var(--font-accent) !important;
    letter-spacing: 0.1em !important;
    text-transform: uppercase !important;
    border: none !important;
    padding: 12px 28px !important;
}
.woocommerce .button:hover { background: var(--color-primary-light) !important; }