:root {
--primary: #0f766e;
--primary-dark: #115e59;
--accent: #f59e0b;
--text: #1f2937;
--muted: #6b7280;
--bg: #f4fdfb;
--card: #ffffff;
--border: #dbe7e5;
}

* {
box-sizing: border-box;
}

body {
margin: 0;
font-family: "Segoe UI", "Microsoft JhengHei", sans-serif;
color: var(--text);
background: linear-gradient(180deg, #f5fffd 0%, #eefaf7 100%);
line-height: 1.7;
}

a {
color: inherit;
text-decoration: none;
}

.container {
width: min(1120px, calc(100% - 32px));
margin: 0 auto;
}

header {
background: rgba(255, 255, 255, 0.9);
backdrop-filter: blur(10px);
border-bottom: 2px solid var(--border);
position: sticky;
top: 0;
z-index: 10;
}

header .container {
width: min(1400px, calc(100% - 16px));
}

.nav {
display: flex;
align-items: center;
justify-content: space-between;
gap: 20px;
min-height: 104px;
}

.brand {
display: flex;
align-items: center;
gap: 12px;
font-weight: 700;
font-size: 0.8em;
color: var(--primary-dark);
}

.brand-names {
display: flex;
flex-direction: column;
line-height: 1.4;
font-size: 1.2rem;
}

.brand-logo {
width: 64px;
height: 48px;
flex: 0 0 auto;
object-fit: contain;
}

nav {
display: flex;
align-items: center;
gap: 26px;
color: var(--muted);
font-size: 0.96rem;
}

.cta {
padding: 12px 22px;
border-radius: 999px;
background: var(--primary);
color: #fff;
font-weight: 600;
box-shadow: 0 10px 24px rgba(15, 118, 110, 0.2);
}

.hero {
padding: 82px 0 40px;
}

.hero-grid {
display: grid;
grid-template-columns: 1.2fr 0.8fr;
gap: 40px;
align-items: center;
}

.eyebrow {
display: inline-flex;
align-items: center;
gap: 8px;
padding: 8px 14px;
border-radius: 999px;
background: #ecfdf5;
border: 1px solid #d1fae5;
color: var(--primary-dark);
font-size: 1.6em;
font-weight: 1000;
}

h1 {
margin: 18px 0 18px;
font-size: clamp(2.4rem, 5vw, 4.2rem);
line-height: 1.1;
color: var(--text);
}

.lead {
font-size: 1.08rem;
color: var(--muted);
max-width: 600px;
margin-bottom: 26px;
}

.actions {
display: flex;
flex-wrap: wrap;
gap: 16px;
margin-bottom: 28px;
}

.button {
display: inline-block;
padding: 15px 24px;
border-radius: 12px;
font-weight: 700;
transition: transform 0.2s ease;
}

.button:hover {
transform: translateY(-1px);
}

.button-primary {
background: var(--primary);
color: #fff;
}

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

.stats {
display: flex;
flex-wrap: wrap;
gap: 22px;
}

.stat {
min-width: 140px;
}

.stat strong {
display: block;
font-size: 1.85rem;
color: var(--primary-dark);
}

.stat span {
color: var(--muted);
font-size: 0.92rem;
}

.hero-card {
background: linear-gradient(135deg, #0f172a 0%, #115e59 100%);
border-radius: 28px;
padding: 28px;
color: #fff;
box-shadow: 0 32px 60px rgba(15, 118, 110, 0.22);
}

.mini-card {
background: rgba(255, 255, 255, 0.12);
border: 1px solid rgba(255, 255, 255, 0.15);
border-radius: 18px;
padding: 18px;
margin-top: 18px;
}

.mini-card h3 {
margin: 0 0 10px;
font-size: 1.3rem;
}

.list {
margin: 0;
padding-left: 18px;
color: rgba(255, 255, 255, 0.9);
}

section {
padding: 32px 0 12px;
}

.section-title {
text-align: center;
margin-bottom: 26px;
}

.section-title h2 {
margin: 0 0 8px;
font-size: clamp(1.8rem, 3vw, 2.5rem);
}

.section-title h3 {
margin: 0 0 8px;
font-size: clamp(1.2rem, 2.5vw, 1.5rem);
color: var(--muted);
}

.card-grid {
display: grid;
grid-template-columns: repeat(3, minmax(0, 1fr));
gap: 24px;
}

.feature-card,
.info-card {
background: var(--card);
border: 1px solid var(--border);
border-radius: 22px;
padding: 28px 24px;
box-shadow: 0 8px 24px rgba(15, 23, 42, 0.025);
}

.info-card {
border: 2px solid #64748b;
font-weight: 700;
font-size: 1.08rem;
}

#solutions .feature-card,
#advantages .feature-card {
border: 2px solid #64748b;
font-size: 1.08rem;
font-weight: 700;
}

.feature-icon {
width: 54px;
height: 54px;
display: grid;
place-items: center;
font-size: 1.45rem;
border-radius: 14px;
background: #ecfeff;
color: var(--primary-dark);
margin-bottom: 18px;
}

.feature-card h3,
.info-card h3 {
margin: 0 0 10px;
font-size: 1.4rem;
}

.feature-card p,
.info-card p,
.info-card li {
color: var(--muted);
}

.info-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 24px;
margin-top: 18px;
}

.leadership-grid {
display: grid;
grid-template-columns: repeat(2, minmax(0, 1fr));
gap: 24px;
margin-top: 24px;
}

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

.company-structure {
margin-top: 22px;
}

.company-node {
display: flex;
flex-direction: column;
gap: 4px;
padding: 14px 16px;
border: 2px solid #64748b;
border-radius: 14px;
background: #fff;
}

.company-node strong {
color: var(--primary-dark);
}

.company-node span {
color: var(--muted);
font-size: 0.92rem;
}

.company-parent {
position: relative;
width: fit-content;
max-width: 100%;
margin: 0 auto;
text-align: center;
background: #f2fbf8;
}

.company-parent::after {
content: "";
position: absolute;
left: 50%;
top: 100%;
height: 13px;
border-left: 2px solid #64748b;
}

.company-subsidiaries {
display: grid;
grid-template-columns: repeat(2, minmax(0, 1fr));
gap: 14px;
margin-top: 24px;
position: relative;
}

.company-subsidiaries::before {
content: "";
position: absolute;
left: calc(25% - 3.5px);
right: calc(25% - 3.5px);
top: -13px;
border-top: 2px solid #64748b;
}

.company-subsidiaries .company-node {
position: relative;
}

.company-subsidiaries .company-node::before {
content: "";
position: absolute;
left: 50%;
top: -13px;
height: 13px;
border-left: 2px solid #64748b;
}

.project-table-wrap {
overflow-x: auto;
background: var(--card);
border: 2px solid #64748b;
border-radius: 18px;
box-shadow: 0 8px 24px rgba(15, 23, 42, 0.025);
}

.project-table {
width: 100%;
min-width: 760px;
border-collapse: collapse;
text-align: left;
font-size: 1.05rem;
font-weight: 700;
}

.project-table th,
.project-table td {
padding: 13px 16px;
border-bottom: 1px solid #94a3b8;
}

.project-table thead th {
background: #ecfdf5;
color: var(--primary-dark);
font-weight: 700;
white-space: nowrap;
}

.project-table th:first-child,
.project-table td:first-child,
.project-table th:nth-child(3),
.project-table td:nth-child(3),
.project-table th:nth-child(4),
.project-table td:nth-child(4),
.project-table th:nth-child(5),
.project-table td:nth-child(5) {
text-align: center;
}

.project-table tbody tr:last-child td {
border-bottom: 1px solid var(--border);
}

.project-table tfoot th,
.project-table tfoot td {
background: #f8fffd;
font-weight: 700;
border-bottom: 0;
}

.contact {
background: linear-gradient(180deg, #ffffff 0%, #f0fdfb 100%);
margin-top: 26px;
border-top: 1px solid var(--border);
}

.contact-box {
display: flex;
justify-content: space-between;
align-items: center;
gap: 16px;
padding: 30px 0 54px;
}

.contact-box h3 {
margin: 0 0 8px;
font-size: clamp(1.6rem, 3vw, 2.1rem);
}

footer {
background: #0f172a;
color: rgba(255, 255, 255, 0.8);
padding: 18px 0 28px;
}

.footer-row {
display: flex;
justify-content: space-between;
align-items: center;
gap: 12px;
flex-wrap: wrap;
}

@media (max-width: 820px) {
nav {
    display: none;
}

.hero-grid,
.card-grid,
.info-grid,
.leadership-grid,
.contact-box {
    grid-template-columns: 1fr;
    display: grid;
}

.contact-box {
    align-items: start;
}
}