:root {
    /* Color Palette */
    --bg-dark: #121212;
    --bg-darker: #0a0a0a;
    --bg-card: #1a1a1a;
    --text-primary: #E0E0E0;
    --text-secondary: #9E9E9E;
    --accent-silver: #C0C5CE;
    --accent-silver-dark: #8A9199;
    --border-color: rgba(192, 197, 206, 0.15);

    /* Typography */
    --font-serif: 'Noto Serif TC', 'Cinzel', serif;
    --font-sans: 'Noto Sans TC', sans-serif;

    /* Layout */
    --max-width: 1600px;
    --section-padding: 110px 5%;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 600;
    letter-spacing: 0.05em;
}

.eng-title {
    font-family: 'Cinzel', serif;
    color: var(--accent-silver-dark);
    font-size: 0.9rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    margin-bottom: 1rem;
    display: block;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 25px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    transition: all 0.4s ease;
}

.navbar.scrolled {
    background-color: rgba(18, 18, 18, 0.90);
    backdrop-filter: blur(10px);
    padding: 5px 5%;
    border-bottom: 1px solid var(--border-color);
}

.brand {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand span {
    color: var(--accent-silver);
}

.nav-links {
    display: flex;
    gap: 35px;
    list-style: none;
}

.nav-links a {
    font-size: 0.95rem;
    letter-spacing: 0.05em;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -5px;
    left: 0;
    background-color: var(--accent-silver);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    background: none;
    border: none;
}

/* Hero Section */
.hero {
  height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 5%;
  background-attachment: fixed;
  background-size: cover;
  background-position: center center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(18,18,18,0.9) 0%, rgba(18,18,18,0.4) 50%, rgba(18,18,18,0.8) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #fff;
    text-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.hero p {
    font-size: 1.2rem;
    color: var(--accent-silver);
    margin-bottom: 40px;
    letter-spacing: 0.05em;
}

.btn {
    display: inline-block;
    padding: 15px 40px;
    border: 1px solid var(--accent-silver);
    color: var(--text-primary);
    font-family: var(--font-serif);
    letter-spacing: 0.1em;
    background: transparent;
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
    cursor: pointer;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--accent-silver);
    transition: all 0.4s ease;
    z-index: -1;
}

.btn:hover {
    color: var(--bg-dark);
}

.btn:hover::before {
    left: 0;
}

/* Value Proposition */
.value-prop {
    padding: var(--section-padding);
    background-color: var(--bg-darker);
    text-align: center;
    position: relative;
}

.value-prop::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 100px;
    background: linear-gradient(to bottom, var(--border-color), transparent);
}

.value-prop .quote {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    line-height: 1.6;
    max-width: 1000px;
    margin: 0 auto 40px auto;
    color: var(--accent-silver);
}

.value-prop p {
    max-width: 800px;
    margin: 0 auto;
    color: var(--text-secondary);
}

.collaborations {
  padding: 80px 5%;
  background-color: #1a1a1a;
}

.collab-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 80px;
    flex-wrap: wrap;
    opacity: 0.6;
    filter: grayscale(100%);
    transition: all 0.5s ease;
}

.collab-wrapper:hover {
    opacity: 1;
}

.collab-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.1em;
}

/* Services Section */
.services {
    padding: var(--section-padding);
}

.services-header {
    text-align: center;
    margin-bottom: 80px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.service-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 50px 40px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-silver-dark);
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

.service-icon {
    font-size: 3rem;
    color: var(--accent-silver);
    margin-bottom: 30px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 30px;
}

.service-list {
    list-style: none;
}

.service-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 12px;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.service-list li::before {
    content: '■';
    position: absolute;
    left: 0;
    top: 2px;
    font-size: 0.5rem;
    color: var(--accent-silver);
}

/* About Section */
.about {
    padding: var(--section-padding);
    background: linear-gradient(rgba(18,18,18,0.9), rgba(18,18,18,0.9)), url('https://images.unsplash.com/photo-1601312378427-822b2b41da35?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80') center/cover fixed;
    display: flex;
    align-items: center;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-img-wrap {
    position: relative;
}

.about-img-wrap::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    width: 100%;
    height: 100%;
    border: 1px solid var(--accent-silver-dark);
    z-index: 0;
}

.about-img {
    position: relative;
    z-index: 1;
    filter: brightness(0.8) contrast(1.2) grayscale(20%);
}

/* News / Swiper */
.news {
    padding: var(--section-padding);
    background-color: var(--bg-darker);
}

.swiper-slide {
    height: auto;
}

.news-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.news-img {
    height: 250px;
    object-fit: cover;
    width: 100%;
    filter: grayscale(20%);
    transition: all 0.4s ease;
}

.news-card:hover .news-img {
    filter: grayscale(50%);
}

.news-content {
  padding: 25px;
  flex-grow: 1;
  background-color: #121212;
}

.news-date {
    font-size: 0.8rem;
    color: var(--accent-silver-dark);
    margin-bottom: 10px;
    display: block;
}

.news-title {
    font-size: 1.2rem;
}

/* CTA Section */
.cta {
  padding: 150px 5%;
  text-align: center;
  background-position: center;
  background-image: url(/up_photo/images/2000x1300/2.jpg);
  background-attachment: fixed;
  position: relative;
}
.cta::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(18, 17, 15, 0.92); 
}
.cta h2 {
    font-size: 3rem;
    margin-bottom: 30px;
}

/* Footer */
.footer {
    background-color: #050505;
    padding: 5px 5% 30px;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: 4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 10px;
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--accent-silver);
}

.footer p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer h4 {
    color: var(--text-primary);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.footer ul {
    list-style: none;
}

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

.footer ul a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer ul a:hover {
    color: var(--accent-silver);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--text-secondary);
    font-size: 0.8rem;
}
.more_box {
  text-align: center;
  padding-top: 40px;
}
.more_box .more_all{
  background-color: #0a0a0a;
  padding-left: 20px;
  padding-right: 20px;
  padding-top: 5px;
  padding-bottom: 5px;
  text-align: center;
  display: inline-block;
  border: 1px solid #5D5D5D;
}
.more_box .more_all:hover{
  background-color: #000000;
}

/* Responsive */
@media (max-width: 1200px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .hero h1 { font-size: 3rem; }
    .about-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background-color: var(--bg-card);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: right 0.4s ease;
        border-left: 1px solid var(--border-color);
    }
    .nav-links.active { right: 0; }
    .menu-toggle { display: block; z-index: 1001; }
    .services-grid { grid-template-columns: 1fr; }
    .value-prop .quote { font-size: 1.5rem; }
    .hero h1 { font-size: 2.5rem; }
    .footer-grid { grid-template-columns: 1fr; }
    .collab-wrapper { gap: 40px; }
}

/* Utility for animation */
.opacity-0 { opacity: 0; }