:root {
    --primary: #00A4B4;
    --primary-dark: #007A86;
    --primary-soft: #E5F6F8;
    --secondary: #BDC5DB;
    --secondary-soft: #F0F3F8;
    --ink: #172026;
    --muted: #5A6872;
    --line: #DDE5EA;
    --surface: #F5F8FA;
    --white: #FFFFFF;
    --dark: #101820;
    --shadow: 0 16px 36px rgba(16, 24, 32, 0.12);
}

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

html {
    scroll-behavior: smooth;
}

body {
    color: var(--ink);
    font-family: "Microsoft JhengHei", "Noto Sans TC", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    background: var(--white);
}

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

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

.container {
    width: min(1200px, calc(100% - 48px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
}

.header-inner {
    min-height: 108px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 18px;
}

.brand img {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

.brand-title {
    display: block;
    color: var(--primary-dark);
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 0.05em;
    line-height: 1.12;
}

.brand-subtitle {
    display: block;
    color: var(--ink);
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
    font-size: 15px;
    font-weight: 700;
}

.main-nav a {
    position: relative;
    padding: 42px 0;
    color: var(--ink);
}

.main-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 100%;
    height: 4px;
    background: var(--primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.2s ease;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--primary-dark);
}

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

.hero,
.page-hero {
    position: relative;
    isolation: isolate;
    color: var(--white);
    overflow: hidden;
    background: var(--dark);
}

.hero {
    min-height: 620px;
    display: flex;
    align-items: center;
}

.hero-slider::before {
    display: none;
}

.hero-slider::after {
    display: none;
}

.hero-slide {
    position: absolute;
    inset: 0;
    z-index: 0;
    display: flex;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    background-image: var(--slide-image);
    background-size: cover;
    background-position: center;
    transition: opacity 0.8s ease;
}

.hero-slide::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background:
        linear-gradient(90deg, rgba(16, 24, 32, 0.9), rgba(16, 24, 32, 0.54)),
        radial-gradient(circle at 82% 30%, rgba(0, 164, 180, 0.32), transparent 32%);
}

.hero-slide.is-active {
    opacity: 1;
    pointer-events: auto;
}

.hero::before,
.page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -2;
    background-size: cover;
    background-position: center;
}

.hero::before {
    background-image: url("https://images.unsplash.com/photo-1518770660439-4636190af475?auto=format&fit=crop&q=80&w=2000");
}

.page-hero::before {
    background-image: var(--hero-image);
}

.hero::after,
.page-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    background:
        linear-gradient(90deg, rgba(16, 24, 32, 0.9), rgba(16, 24, 32, 0.54)),
        radial-gradient(circle at 82% 30%, rgba(0, 164, 180, 0.32), transparent 32%);
}

.page-hero {
    min-height: 340px;
    display: flex;
    align-items: center;
}

.hero-content,
.page-hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 880px;
    margin: 0;
    padding-left: clamp(24px, 6vw, 90px);
    padding-right: 24px;
    text-align: left;
}

.eyebrow {
    margin-bottom: 18px;
    color: var(--primary-soft);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.hero h1,
.page-hero h1 {
    color: var(--white);
    font-size: clamp(42px, 5.4vw, 68px);
    line-height: 1.14;
    letter-spacing: -0.04em;
}

.page-hero h1 {
    font-size: clamp(36px, 4.2vw, 54px);
}

.hero p,
.page-hero p {
    max-width: 760px;
    margin-top: 24px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 20px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 36px;
    justify-content: flex-start;
}

.hero-dots {
    position: absolute;
    left: clamp(24px, 6vw, 90px);
    bottom: 34px;
    z-index: 4;
    display: flex;
    gap: 12px;
}

.hero-dots button {
    width: 42px;
    height: 4px;
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.44);
    transition: 0.2s ease;
}

.hero-dots button.is-active {
    width: 66px;
    background: var(--primary);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 26px;
    border: 1px solid currentColor;
    font-weight: 800;
    transition: 0.2s ease;
}

.button.primary {
    border-color: var(--primary);
    color: var(--white);
    background: var(--primary);
}

.button.primary:hover {
    border-color: var(--primary-dark);
    background: var(--primary-dark);
}

.button.ghost {
    color: var(--white);
}

.button.ghost:hover {
    color: var(--ink);
    background: var(--white);
}

.section {
    padding: 88px 0;
}

.section.compact {
    padding: 64px 0;
}

.section.surface {
    background: var(--surface);
}

.section.primary {
    color: var(--white);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.section.primary h2,
.section.primary h3,
.section.primary p {
    color: var(--white);
}

.section-header {
    max-width: 820px;
    margin-bottom: 42px;
}

.section-eyebrow {
    display: block;
    margin-bottom: 12px;
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.section.primary .section-eyebrow {
    color: rgba(255, 255, 255, 0.85);
}

.section-title {
    margin-bottom: 16px;
    font-size: clamp(30px, 3.4vw, 44px);
    line-height: 1.25;
    letter-spacing: -0.03em;
}

.section-lead {
    color: var(--muted);
    font-size: 18px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
}

.quick-panel {
    position: relative;
    z-index: 3;
    margin-top: 0;
    padding-top: 34px;
}

.quick-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: var(--white);
    box-shadow: var(--shadow);
}

.quick-card {
    min-height: 132px;
    padding: 28px 20px;
    border-right: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    transition: 0.2s ease;
}

.quick-card:last-child {
    border-right: 0;
}

.quick-card span {
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.quick-card strong {
    font-size: 18px;
}

.quick-card:hover {
    color: var(--white);
    background: var(--primary);
}

.quick-card:hover span {
    color: rgba(255, 255, 255, 0.82);
}

.card,
.product-card,
.market-card,
.tech-card,
.info-card {
    border: 1px solid var(--line);
    background: var(--white);
    box-shadow: 0 10px 24px rgba(16, 24, 32, 0.04);
}

.card,
.tech-card,
.info-card {
    padding: 30px;
}

.card h3,
.product-card h3,
.market-card h3,
.tech-card h3,
.info-card h3 {
    margin-bottom: 12px;
    color: var(--primary-dark);
    font-size: 22px;
    line-height: 1.35;
}

.card p,
.product-card p,
.market-card p,
.tech-card p,
.info-card p {
    color: var(--muted);
}

.product-card,
.market-card {
    overflow: hidden;
}

.card-image {
    min-height: 220px;
    background-size: cover;
    background-position: center;
}

.card-body {
    padding: 28px;
}

.link-arrow {
    display: inline-flex;
    margin-top: 18px;
    color: var(--primary-dark);
    font-weight: 800;
}

.link-arrow:hover {
    color: var(--primary);
}

.news-date {
    display: inline-flex;
    margin-bottom: 14px;
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.86fr);
    gap: 56px;
    align-items: center;
}

.feature-list {
    display: grid;
    gap: 18px;
}

.feature-item {
    display: grid;
    grid-template-columns: 34px 1fr;
    gap: 16px;
    align-items: start;
}

.feature-mark {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: var(--white);
    background: var(--primary);
    font-weight: 900;
}

.section.primary .feature-mark {
    color: var(--primary-dark);
    background: var(--white);
}

.spec-list {
    display: grid;
    gap: 12px;
    margin-top: 22px;
}

.spec-list li {
    list-style: none;
    padding: 14px 16px;
    border-left: 4px solid var(--primary);
    color: var(--muted);
    background: var(--surface);
}

.page-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 34px;
}

.page-tabs a {
    padding: 10px 16px;
    border: 1px solid var(--line);
    color: var(--primary-dark);
    font-size: 15px;
    font-weight: 800;
    background: var(--white);
}

.page-tabs a:hover,
.page-tabs a.active {
    color: var(--white);
    border-color: var(--primary);
    background: var(--primary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 34px;
}

.contact-list {
    display: grid;
    gap: 14px;
}

.contact-list a,
.contact-list span {
    display: block;
    padding: 16px 18px;
    border: 1px solid var(--line);
    color: var(--muted);
    background: var(--white);
}

.site-footer {
    color: #c9d3d8;
    background: #172026;
}

.footer-main {
    padding: 58px 0;
    display: grid;
    grid-template-columns: 1.2fr repeat(3, 1fr);
    gap: 32px;
}

.footer-main h3,
.footer-main h4 {
    margin-bottom: 16px;
    color: var(--white);
}

.footer-main p,
.footer-main li {
    color: #a9b7bf;
    font-size: 14px;
}

.footer-main ul {
    list-style: none;
    display: grid;
    gap: 10px;
}

.footer-main a:hover {
    color: var(--white);
}

.footer-bottom {
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    color: #92a3ac;
    font-size: 13px;
}

@media (max-width: 980px) {
    .header-inner {
        align-items: flex-start;
        flex-direction: column;
        padding: 18px 0;
    }

    .main-nav {
        flex-wrap: wrap;
        gap: 18px 24px;
    }

    .main-nav a {
        padding: 0 0 12px;
    }

    .hero {
        min-height: 560px;
    }

    .quick-grid,
    .grid-2,
    .grid-3,
    .grid-4,
    .split,
    .contact-grid,
    .footer-main {
        grid-template-columns: 1fr;
    }

    .quick-card {
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }
}

@media (max-width: 640px) {
    .container {
        width: min(100% - 30px, 1200px);
    }

    .hero h1,
    .page-hero h1 {
        font-size: 36px;
    }

    .hero p,
    .page-hero p {
        font-size: 17px;
    }

    .section {
        padding: 64px 0;
    }
}

.tech-card {
    position: relative;
}

.tech-index {
    position: absolute;
    top: 22px;
    right: 26px;
    color: var(--secondary);
    font-size: 30px;
    font-weight: 900;
    letter-spacing: 0.02em;
}

.tech-sub {
    margin-top: -4px;
    margin-bottom: 6px;
    color: var(--primary-dark);
    font-size: 14px;
    font-weight: 700;
}

.tech-flow {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 36px;
    padding: 22px 24px;
    border: 1px dashed var(--primary);
    background: var(--white);
}

.tech-flow-item {
    color: var(--primary-dark);
    font-weight: 800;
}

.tech-flow i {
    color: var(--primary);
}

.quick-icon { font-size: 32px; color: var(--primary); margin-bottom: 12px; transition: 0.2s ease; }
.quick-card:hover .quick-icon { color: var(--white); transform: translateY(-4px); }
.card-icon { font-size: 36px; color: var(--primary); margin-bottom: 20px; }
.spec-list li i { color: var(--primary); margin-right: 10px; width: 20px; text-align: center; }