:root {
    --bg: #07111f;
    --bg-soft: #0b1829;
    --panel: rgba(14, 31, 50, 0.78);
    --panel-solid: #0f2033;
    --line: rgba(139, 184, 213, 0.18);
    --text: #f4f8fb;
    --muted: #9db1c4;
    --cyan: #4de8ff;
    --cyan-strong: #1db8d3;
    --violet: #8d7cff;
    --green: #67efb8;
    --danger: #ff7d8c;
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
    --radius: 22px;
    --radius-sm: 14px;
    --container: min(1180px, calc(100% - 40px));
    --header-h: 84px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    overflow-x: hidden;
    min-width: 320px;
    color: var(--text);
    background:
        radial-gradient(circle at 10% 15%, rgba(77, 232, 255, 0.10), transparent 28%),
        radial-gradient(circle at 90% 20%, rgba(141, 124, 255, 0.11), transparent 30%),
        linear-gradient(180deg, #06101d 0%, #081523 55%, #050d17 100%);
    font-family: Inter, "Noto Sans TC", "Noto Sans JP", "Segoe UI", Arial, sans-serif;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
    background-size: 42px 42px;
    mask-image: linear-gradient(to bottom, rgba(0,0,0,.8), transparent 82%);
    z-index: -1;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
.container { width: var(--container); margin-inline: auto; }
.site-shell { overflow: visible; }
.skip-link {
    position: fixed; left: 16px; top: -80px; z-index: 9999;
    background: #fff; color: #07111f; padding: 10px 16px; border-radius: 8px;
}
.skip-link:focus { top: 16px; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-h);
    border-bottom: 1px solid rgba(255,255,255,.08);
    background: rgba(5, 14, 25, .82);
    backdrop-filter: blur(18px);
}
.header-inner {
    min-height: 100%;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 24px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: max-content; }
.brand-mark {
    position: relative; width: 44px; aspect-ratio: 1; display: grid; place-items: center;
    border-radius: 50%;
    border: 4px solid var(--cyan);
    box-shadow: 0 0 22px rgba(77,232,255,.32), inset 0 0 14px rgba(77,232,255,.18);
}
.brand-mark::before {
    content: ""; width: 9px; aspect-ratio: 1; background: var(--violet); border-radius: 50%;
    box-shadow: 0 0 14px rgba(141,124,255,.7);
}
.brand-mark i, .brand-mark b {
    position: absolute; inset: 6px; border-radius: 50%; border-top: 1px solid rgba(255,255,255,.9); transform: rotate(28deg);
}
.brand-mark b { inset: -4px; border-top-color: rgba(141,124,255,.65); transform: rotate(155deg); }
.brand-copy { display: grid; line-height: 1.05; }
.brand-copy strong { letter-spacing: .16em; font-size: .98rem; }
.brand-copy small { margin-top: 6px; color: var(--muted); font-size: .64rem; letter-spacing: .08em; }
.primary-nav { display: flex; justify-content: center; align-items: center; gap: 4px; }
.primary-nav a {
    position: relative; padding: 10px 11px; color: #b7c6d4; border-radius: 10px; font-size: .9rem; white-space: nowrap;
    transition: color .2s ease, background .2s ease;
}
.primary-nav a:hover, .primary-nav a.active { color: #fff; background: rgba(255,255,255,.055); }
.primary-nav a.active::after {
    content: ""; position: absolute; height: 2px; left: 12px; right: 12px; bottom: 4px; border-radius: 99px;
    background: linear-gradient(90deg, var(--cyan), var(--violet)); box-shadow: 0 0 10px rgba(77,232,255,.45);
}
.language-switcher { display: flex; align-items: center; padding: 4px; border: 1px solid var(--line); background: rgba(255,255,255,.035); border-radius: 12px; }
.language-switcher a { padding: 6px 8px; color: var(--muted); font-size: .72rem; border-radius: 8px; }
.language-switcher a.active { color: #06101d; background: var(--cyan); font-weight: 800; }
.mobile-languages { display: none; }
.nav-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255,255,255,.04); }
.nav-toggle span { display: block; width: 20px; height: 2px; margin: 4px auto; background: #fff; border-radius: 2px; }

main { min-height: 60vh; }
.section { padding: 104px 0; }
.section-tight { padding: 74px 0; }
.section-surface { background: linear-gradient(180deg, rgba(255,255,255,.025), rgba(255,255,255,.008)); border-block: 1px solid rgba(255,255,255,.055); }
.section-head { display: grid; grid-template-columns: 1fr minmax(300px, .72fr); gap: 50px; align-items: end; margin-bottom: 42px; }
.section-head.single { grid-template-columns: 1fr; max-width: 760px; }
.kicker {
    display: inline-flex; align-items: center; gap: 10px; margin-bottom: 14px;
    color: var(--cyan); font-weight: 800; letter-spacing: .16em; font-size: .74rem; text-transform: uppercase;
}
.kicker::before { content: ""; width: 34px; height: 1px; background: linear-gradient(90deg, var(--cyan), transparent); }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(2.7rem, 7vw, 5.9rem); line-height: .98; letter-spacing: -.055em; margin-bottom: 26px; }
h2 { font-size: clamp(2rem, 4.2vw, 3.6rem); line-height: 1.08; letter-spacing: -.035em; margin-bottom: 18px; }
h3 { font-size: 1.22rem; line-height: 1.25; margin-bottom: 12px; }
p { color: var(--muted); }
.lead { font-size: clamp(1.03rem, 2vw, 1.28rem); max-width: 760px; }
.gradient-text, .hero h1 span { background: linear-gradient(105deg, #fff 10%, var(--cyan) 55%, var(--violet)); -webkit-background-clip: text; background-clip: text; color: transparent; }

.hero { position: relative; min-height: calc(100vh - var(--header-h)); display: grid; align-items: center; padding: 76px 0 80px; }
.hero::after {
    content: ""; position: absolute; width: 650px; height: 650px; right: -220px; top: 2%; border-radius: 50%;
    background: radial-gradient(circle, rgba(77,232,255,.12), transparent 66%); filter: blur(4px); pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(360px, .9fr); align-items: center; gap: 70px; }
.hero-copy { position: relative; z-index: 2; }
.hero-copy .lead { max-width: 720px; margin-bottom: 30px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 34px; }
.btn {
    display: inline-flex; justify-content: center; align-items: center; gap: 10px; min-height: 52px; padding: 0 22px;
    border-radius: 14px; border: 1px solid transparent; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: #05101c; background: linear-gradient(135deg, var(--cyan), #8ff1ff); box-shadow: 0 12px 34px rgba(77,232,255,.22); }
.btn-primary:hover { box-shadow: 0 16px 38px rgba(77,232,255,.33); }
.btn-secondary { color: #fff; border-color: var(--line); background: rgba(255,255,255,.035); }
.btn-secondary:hover { border-color: rgba(77,232,255,.55); background: rgba(77,232,255,.07); }
.hero-chips { display: flex; flex-wrap: wrap; gap: 9px; }
.hero-chips span { padding: 8px 11px; border: 1px solid var(--line); color: #adc0d2; border-radius: 999px; font-size: .78rem; background: rgba(255,255,255,.025); }
.hero-visual {
    min-height: 570px;
    position: relative;
    display: grid;
    place-items: center;
    perspective: 1100px;
}
.disc-stage {
    --tilt-x: 0deg;
    --tilt-y: 0deg;
    --move-x: 0px;
    --move-y: 0px;
    position: relative;
    width: min(470px, 100%);
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    filter: drop-shadow(0 34px 65px rgba(0,0,0,.45));
    transform-style: preserve-3d;
    transform: translate3d(var(--move-x), var(--move-y), 0) rotateX(var(--tilt-x)) rotateY(var(--tilt-y));
    transition: transform .2s ease-out;
}
.disc-stage::before, .disc-stage::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(77,232,255,.16);
    animation: pulse-ring 4.8s ease-in-out infinite;
}
.disc-stage::before { inset: -22px; }
.disc-stage::after { inset: -68px; border-style: dashed; animation: ring-spin 24s linear infinite; opacity: .48; }
.disc-float {
    position: relative;
    width: 78%;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    transform-style: preserve-3d;
    animation: disc-bob 4.4s ease-in-out infinite;
    will-change: transform;
}
.disc {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    overflow: hidden;
    background:
        radial-gradient(circle at center, #091321 0 8%, #b5cbd7 8.5% 11%, transparent 11.5%),
        conic-gradient(from 10deg, #9af7ff, #6974ff, #fba2da, #ffe8aa, #70f4cf, #9af7ff);
    box-shadow: inset 0 0 50px rgba(255,255,255,.75), inset 0 0 0 2px rgba(255,255,255,.35), 0 0 45px rgba(77,232,255,.24);
    animation: disc-turn 13s linear infinite;
    will-change: transform;
}
.disc::before {
    content: "";
    position: absolute;
    inset: 4%;
    border-radius: 50%;
    background:
        conic-gradient(from 205deg, transparent 0 12%, rgba(255,255,255,.78) 16%, transparent 22% 58%, rgba(77,232,255,.48) 64%, transparent 72%),
        repeating-radial-gradient(circle, rgba(255,255,255,.22) 0 1px, transparent 2px 10px),
        linear-gradient(105deg, transparent 15%, rgba(255,255,255,.78) 28%, transparent 40% 65%, rgba(255,255,255,.42) 78%, transparent 88%);
    mix-blend-mode: overlay;
    animation: disc-shimmer 3.8s ease-in-out infinite;
}
.disc::after {
    content: "";
    position: absolute;
    inset: 44%;
    border-radius: 50%;
    background: #07111f;
    box-shadow: 0 0 0 8px rgba(255,255,255,.3), 0 0 22px rgba(0,0,0,.4);
}
.disc-label {
    position: relative;
    z-index: 5;
    width: 32%;
    aspect-ratio: 1;
    border-radius: 50%;
    display: grid;
    place-items: center;
    text-align: center;
    color: #06111d;
    font-size: .7rem;
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: .08em;
    text-transform: uppercase;
    transform: translateZ(22px);
}
.orbit-card {
    position: absolute;
    min-width: 150px;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,.13);
    background: rgba(11, 25, 42, .82);
    backdrop-filter: blur(14px);
    box-shadow: var(--shadow);
    will-change: transform;
}
.orbit-card b { display: block; color: #fff; font-size: .88rem; }
.orbit-card small { color: var(--muted); }
.orbit-card.one { top: 8%; right: 0; animation: orbit-float-a 6.4s ease-in-out infinite; }
.orbit-card.two { bottom: 12%; left: 0; animation: orbit-float-b 7.1s ease-in-out infinite; }
.orbit-card.three { bottom: 3%; right: 8%; animation: orbit-float-c 6.8s ease-in-out infinite; }
.orbit-card::before {
    content: "";
    width: 8px;
    height: 8px;
    display: inline-block;
    margin-right: 8px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 10px var(--green);
}

.disc-float, .disc, .disc::before, .disc-stage::before, .disc-stage::after,
.orbit-card.one, .orbit-card.two, .orbit-card.three {
    animation-play-state: running;
    backface-visibility: hidden;
}
@keyframes disc-bob {
    0%, 100% { transform: translate3d(0, 8px, 0) rotate(-4deg) scale(1); }
    25% { transform: translate3d(8px, -8px, 14px) rotate(1deg) scale(1.012); }
    50% { transform: translate3d(0, -24px, 22px) rotate(6deg) scale(1.025); }
    75% { transform: translate3d(-8px, -7px, 12px) rotate(0deg) scale(1.012); }
}
@keyframes disc-turn {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
@keyframes disc-shimmer {
    0%, 100% { transform: rotate(-12deg) translateX(-5%); opacity: .72; }
    50% { transform: rotate(18deg) translateX(7%); opacity: 1; }
}
@keyframes orbit-float-a {
    0%,100% { transform: translate3d(0,0,26px); }
    50% { transform: translate3d(7px,-13px,38px); }
}
@keyframes orbit-float-b {
    0%,100% { transform: translate3d(0,0,18px); }
    50% { transform: translate3d(-8px,-11px,32px); }
}
@keyframes orbit-float-c {
    0%,100% { transform: translate3d(0,0,22px); }
    50% { transform: translate3d(6px,-12px,35px); }
}
@keyframes ring-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
@keyframes pulse-ring {
    0%,100% { opacity: .22; transform: scale(.97); }
    50% { opacity: .72; transform: scale(1.025); }
}

.card-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }
.tech-card {
    position: relative; padding: 28px; min-height: 250px; overflow: hidden;
    border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(155deg, rgba(255,255,255,.055), rgba(255,255,255,.018));
    box-shadow: 0 16px 45px rgba(0,0,0,.14); transition: transform .25s ease, border-color .25s ease, background .25s ease;
}
.tech-card:hover { transform: translateY(-6px); border-color: rgba(77,232,255,.45); background: linear-gradient(155deg, rgba(77,232,255,.08), rgba(255,255,255,.02)); }
.tech-card .number { color: var(--cyan); font-weight: 900; letter-spacing: .16em; font-size: .78rem; }
.tech-card h3 { margin-top: 48px; font-size: 1.38rem; }
.tech-card::after { content: ""; position: absolute; width: 90px; height: 90px; right: -26px; top: -26px; border: 1px solid rgba(77,232,255,.2); border-radius: 50%; }

.workflow-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; counter-reset: workflow; }
.workflow-item { position: relative; padding: 26px 24px 18px 0; counter-increment: workflow; }
.workflow-item::before { content: "0" counter(workflow); display: block; color: var(--cyan); font-size: .74rem; font-weight: 900; letter-spacing: .14em; margin-bottom: 20px; }
.workflow-item:not(:last-child)::after { content: ""; position: absolute; top: 32px; right: 18px; width: 42%; height: 1px; background: linear-gradient(90deg, var(--cyan), transparent); }
.workflow-item h3 { font-size: 1.05rem; }
.workflow-item p { font-size: .9rem; }

.media-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.media-card { overflow: hidden; border: 1px solid var(--line); background: rgba(255,255,255,.025); border-radius: var(--radius); transition: transform .25s ease, border-color .25s ease; }
.media-card:hover { transform: translateY(-5px); border-color: rgba(77,232,255,.42); }
.media-image { position: relative; min-height: 230px; display: grid; place-items: center; padding: 26px; background: radial-gradient(circle at 50% 30%, rgba(77,232,255,.13), transparent 55%), #0a1726; }
.media-image img { max-height: 185px; object-fit: contain; mix-blend-mode: screen; filter: contrast(1.02) saturate(.88); }
.media-card-content { padding: 24px; }
.media-card-content .tag, .product-tag { display: inline-flex; margin-bottom: 14px; color: var(--cyan); font-size: .72rem; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.meta-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.meta-row small { display: block; color: var(--muted); font-size: .72rem; }
.meta-row strong { display: block; margin-top: 3px; font-size: .88rem; }

.quality-panel, .cta-panel {
    position: relative; overflow: hidden; display: grid; grid-template-columns: 1.05fr .95fr; gap: 50px; align-items: center;
    padding: clamp(34px, 6vw, 70px); border: 1px solid rgba(77,232,255,.22); border-radius: 30px;
    background: linear-gradient(135deg, rgba(77,232,255,.09), rgba(141,124,255,.08) 55%, rgba(255,255,255,.025)); box-shadow: var(--shadow);
}
.quality-panel::before, .cta-panel::before { content: ""; position: absolute; width: 360px; height: 360px; right: -130px; bottom: -170px; border: 1px solid rgba(255,255,255,.10); border-radius: 50%; box-shadow: 0 0 0 40px rgba(255,255,255,.015), 0 0 0 80px rgba(255,255,255,.01); pointer-events: none; z-index: 0; }
.quality-panel > *, .cta-panel > * { position: relative; z-index: 1; }
.check-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; position: relative; z-index: 1; }
.check-list span { padding: 13px 14px; border: 1px solid rgba(255,255,255,.09); border-radius: 12px; background: rgba(5,14,25,.32); color: #dce8f1; font-size: .88rem; }
.check-list span::before { content: "✓"; color: var(--green); margin-right: 9px; font-weight: 900; }
.cta-panel { grid-template-columns: 1fr auto; }
.cta-panel h2 { max-width: 760px; }
.cta-panel p { margin-bottom: 0; }

.page-hero { padding: 112px 0 74px; border-bottom: 1px solid rgba(255,255,255,.055); }
.page-hero .inner { max-width: 900px; }
.page-hero h1 { font-size: clamp(3rem, 7vw, 5.7rem); }
.breadcrumb { display: flex; align-items: center; gap: 9px; margin-bottom: 24px; color: var(--muted); font-size: .8rem; }
.breadcrumb a { color: var(--cyan); }

.about-grid { display: grid; grid-template-columns: minmax(0, .95fr) minmax(420px, 1.05fr); gap: 70px; align-items: center; }
.about-visual { position: relative; min-height: 480px; border: 1px solid var(--line); border-radius: 28px; overflow: hidden; background: #091725; }
.about-visual img { width: 100%; height: 100%; object-fit: cover; opacity: .78; }
.about-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(145deg, rgba(6,16,29,.12), rgba(6,16,29,.86)); }
.about-visual .visual-label { position: absolute; z-index: 2; left: 28px; bottom: 28px; padding: 16px 18px; border: 1px solid rgba(255,255,255,.15); border-radius: 14px; background: rgba(6,16,29,.72); backdrop-filter: blur(14px); }
.values-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
.value-card { padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,.025); }
.value-card .value-icon { width: 42px; height: 42px; display: grid; place-items: center; margin-bottom: 26px; border-radius: 12px; background: rgba(77,232,255,.09); color: var(--cyan); font-weight: 900; }
.ipr-panel { display: grid; grid-template-columns: .85fr 1.15fr; gap: 70px; align-items: center; }
.ipr-symbol { min-height: 360px; position: relative; display: grid; place-items: center; }
.ipr-symbol::before { content: "IP"; width: 230px; aspect-ratio: 1; display: grid; place-items: center; border: 1px solid rgba(77,232,255,.32); border-radius: 50%; color: var(--cyan); font-size: 4.5rem; font-weight: 900; letter-spacing: -.08em; box-shadow: inset 0 0 50px rgba(77,232,255,.08), 0 0 60px rgba(77,232,255,.08); }
.ipr-symbol::after { content: ""; position: absolute; width: 310px; aspect-ratio: 1; border: 1px dashed rgba(141,124,255,.35); border-radius: 50%; animation: spin 22s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.service-list { display: grid; gap: 42px; }
.service-row { display: grid; grid-template-columns: 1fr 1fr; min-height: 450px; overflow: hidden; border: 1px solid var(--line); border-radius: 28px; background: rgba(255,255,255,.022); }
.service-row:nth-child(even) .service-image { order: 2; }
.service-image { min-height: 100%; background: radial-gradient(circle at center, rgba(77,232,255,.14), transparent 62%), #0a1726; display: grid; place-items: center; overflow: hidden; padding: 28px; }
.service-image img { width: 100%; max-height: 370px; object-fit: contain; }
.service-content { padding: clamp(32px, 5vw, 62px); display: flex; flex-direction: column; justify-content: center; }
.service-step { color: var(--cyan); font-size: .78rem; letter-spacing: .16em; font-weight: 900; }
.service-subtitle { color: var(--violet); font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 800; }
.bullet-list { display: grid; gap: 10px; padding: 0; margin: 22px 0 0; list-style: none; }
.bullet-list li { color: #d7e3ec; padding-left: 22px; position: relative; }
.bullet-list li::before { content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px rgba(77,232,255,.5); }

.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.product-card { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: rgba(255,255,255,.025); }
.product-card .product-image { height: 230px; display: grid; place-items: center; padding: 24px; background: linear-gradient(145deg, rgba(77,232,255,.08), rgba(141,124,255,.05)); }
.product-card .product-image img { max-height: 185px; object-fit: contain; }
.product-card .product-body { padding: 24px; }
.notice-panel { padding: 28px 32px; border-left: 3px solid var(--cyan); border-radius: 0 14px 14px 0; background: rgba(77,232,255,.06); }
.notice-panel p { margin-bottom: 0; }

.package-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.package-card { min-height: 420px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: rgba(255,255,255,.025); }
.package-image { height: 260px; display: grid; place-items: center; padding: 20px; background: #edf2f5; }
.package-image img { max-height: 230px; object-fit: contain; }
.package-content { padding: 24px; }

.resource-section + .resource-section { margin-top: 70px; }
.download-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }
.download-card { display: grid; grid-template-columns: auto 1fr auto; gap: 16px; align-items: center; padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.024); transition: border-color .2s ease, transform .2s ease; }
.download-card:hover { border-color: rgba(77,232,255,.45); transform: translateY(-3px); }
.file-icon { width: 44px; height: 50px; display: grid; place-items: center; border-radius: 10px; background: rgba(77,232,255,.1); color: var(--cyan); font-size: .72rem; font-weight: 900; }
.download-card h3 { margin: 0 0 4px; font-size: .95rem; }
.download-card small { color: var(--muted); }
.download-arrow { color: var(--cyan); font-size: 1.35rem; }
.faq-list { display: grid; gap: 12px; }
details { border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.024); }
summary { list-style: none; padding: 20px 56px 20px 22px; cursor: pointer; position: relative; font-weight: 750; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%); color: var(--cyan); font-size: 1.4rem; }
details[open] summary::after { content: "−"; }
details p { padding: 0 22px 22px; margin: 0; }

.contact-grid { display: grid; grid-template-columns: minmax(320px, .78fr) minmax(0, 1.22fr); gap: 34px; align-items: start; }
.contact-card, .form-card { border: 1px solid var(--line); border-radius: 26px; background: rgba(255,255,255,.025); box-shadow: 0 16px 40px rgba(0,0,0,.13); }
.contact-card { padding: 32px; position: sticky; top: calc(var(--header-h) + 24px); }
.contact-list { display: grid; gap: 20px; margin-top: 28px; }
.contact-item { display: grid; grid-template-columns: 44px 1fr; gap: 14px; align-items: start; }
.contact-icon { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; color: var(--cyan); background: rgba(77,232,255,.08); }
.contact-item small { display: block; color: var(--muted); }
.contact-item a, .contact-item strong { color: #fff; font-weight: 700; }
.form-card { padding: clamp(28px, 5vw, 48px); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: grid; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: .86rem; font-weight: 700; color: #dce7ef; }
.field label .required { color: var(--cyan); }
input, select, textarea {
    width: 100%; color: #fff; border: 1px solid rgba(156,184,205,.22); border-radius: 12px; background: rgba(5,14,25,.72); padding: 13px 14px; outline: none;
    transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
input:focus, select:focus, textarea:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(77,232,255,.10); background: rgba(5,14,25,.96); }
textarea { min-height: 160px; resize: vertical; }
select { color-scheme: dark; }
select option { color: #f4f8fc; background: #0b1828; }
select option:checked { color: #fff; background: #246fd1; }
.field-help { display:block; color:var(--muted); font-size:.8rem; line-height:1.55; }
.checkbox { display: flex; gap: 10px; align-items: flex-start; color: var(--muted); font-size: .86rem; }
.checkbox input { width: 18px; height: 18px; margin-top: 3px; accent-color: var(--cyan); }
.form-actions { margin-top: 24px; display: flex; justify-content: flex-end; }
.alert { padding: 16px 18px; margin-bottom: 20px; border-radius: 13px; border: 1px solid; }
.alert.success { color: #d9ffef; border-color: rgba(103,239,184,.38); background: rgba(103,239,184,.08); }
.alert.error { color: #ffe3e6; border-color: rgba(255,125,140,.38); background: rgba(255,125,140,.08); }
.honeypot { position: absolute !important; left: -9999px !important; opacity: 0 !important; pointer-events: none !important; }

.site-footer { border-top: 1px solid rgba(255,255,255,.075); padding: 70px 0 24px; background: rgba(3,10,18,.72); }
.footer-grid { display: grid; grid-template-columns: 1.5fr .7fr 1fr .65fr; gap: 48px; }
.footer-grid h2 { font-size: .88rem; letter-spacing: .08em; text-transform: uppercase; color: #fff; margin-bottom: 18px; }
.footer-grid > div { display: flex; flex-direction: column; align-items: flex-start; }
.footer-grid a { color: var(--muted); margin-bottom: 9px; font-size: .9rem; }
.footer-grid a:hover { color: var(--cyan); }
.footer-grid p { font-size: .9rem; }
.footer-brand { margin-bottom: 20px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 46px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.075); color: #7890a5; font-size: .8rem; }
.back-top {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 1200;
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(77,232,255,.34);
    border-radius: 13px;
    background: rgba(6,16,29,.9);
    backdrop-filter: blur(12px);
    color: var(--cyan);
    box-shadow: 0 12px 28px rgba(0,0,0,.3), 0 0 18px rgba(77,232,255,.08);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(12px);
    transition: opacity .22s ease, transform .22s ease, visibility .22s ease, border-color .2s ease;
}
.back-top.is-visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
}
.back-top:hover { border-color: var(--cyan); transform: translateY(-3px); }
.back-top:focus-visible { outline: 3px solid rgba(77,232,255,.25); outline-offset: 3px; }

[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
[data-reveal].revealed { opacity: 1; transform: none; }

@media (max-width: 1100px) {
    :root { --container: min(100% - 32px, 1040px); }
    .header-inner { grid-template-columns: auto auto auto; justify-content: space-between; }
    .nav-toggle { display: block; order: 3; }
    .language-switcher { order: 2; }
    .primary-nav {
        position: fixed; inset: var(--header-h) 0 auto; display: grid; gap: 0; padding: 14px 16px 20px;
        background: rgba(5,14,25,.98); border-bottom: 1px solid var(--line); transform: translateY(-130%); opacity: 0; pointer-events: none; transition: transform .25s ease, opacity .25s ease;
    }
    .primary-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .primary-nav a { padding: 13px 15px; }
    .primary-nav a.active::after { display: none; }
    .hero-grid { grid-template-columns: 1fr .85fr; gap: 36px; }
    .card-grid, .values-grid { grid-template-columns: repeat(2,1fr); }
    .workflow-grid { grid-template-columns: repeat(3,1fr); row-gap: 12px; }
    .media-grid, .product-grid, .package-grid, .download-grid { grid-template-columns: repeat(2,1fr); }
    .footer-grid { grid-template-columns: 1.3fr .7fr 1fr; }
    .footer-grid > div:last-child { grid-column: 1 / -1; }
}

@media (max-width: 820px) {
    :root { --header-h: 74px; }
    .brand-copy small { display: none; }
    .language-switcher a { padding: 5px 7px; }
    .hero { min-height: auto; padding-top: 70px; }
    .hero-grid, .section-head, .quality-panel, .cta-panel, .about-grid, .ipr-panel, .service-row, .contact-grid { grid-template-columns: 1fr; }
    .hero-visual { min-height: 440px; margin-top: -20px; }
    .disc-stage { width: min(390px, 90%); }
    .section { padding: 78px 0; }
    .section-head { gap: 8px; }
    .workflow-grid { grid-template-columns: repeat(2,1fr); }
    .workflow-item:not(:last-child)::after { display: none; }
    .service-row:nth-child(even) .service-image { order: initial; }
    .service-image { min-height: 320px; }
    .about-visual { min-height: 380px; }
    .contact-card { position: static; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid > div:last-child { grid-column: auto; }
}

@media (max-width: 860px) {
    .hero-visual { min-height: 460px; }
    .disc-stage { width: min(420px, 100%); }
    .orbit-card { min-width: 132px; padding: 12px 14px; }
}

@media (hover: none), (pointer: coarse) {
    .disc-stage { animation-duration: 9s; }
    .orbit-card.one, .orbit-card.two, .orbit-card.three { animation-duration: 8.8s; }
}

@media (max-width: 560px) {
    :root { --container: calc(100% - 24px); --radius: 18px; }
    .site-header .brand-copy strong { font-size: .82rem; }
    .brand-mark { width: 38px; }
    .language-switcher { display: none; }
    .mobile-languages { display: flex; gap: 8px; padding: 14px 15px 4px; border-top: 1px solid var(--line); margin-top: 8px; }
    .mobile-languages a { flex: 1; text-align: center; border: 1px solid var(--line); }
    .mobile-languages a.active { color: #06101d; background: var(--cyan); }
    .header-inner { grid-template-columns: auto auto; }
    .nav-toggle { order: initial; }
    h1 { font-size: clamp(2.55rem, 14vw, 4.3rem); }
    h2 { font-size: clamp(1.9rem, 10vw, 2.8rem); }
    .hero-actions .btn { width: 100%; }
    .hero-visual { min-height: 350px; }
    .orbit-card { min-width: 125px; padding: 10px 12px; font-size: .78rem; }
    .orbit-card.one { top: 4%; }
    .orbit-card.two { bottom: 7%; }
    .orbit-card.three { display: none; }
    .card-grid, .media-grid, .product-grid, .package-grid, .download-grid, .values-grid, .workflow-grid, .check-list, .form-grid { grid-template-columns: 1fr; }
    .quality-panel, .cta-panel, .form-card, .contact-card { padding: 26px; }
    .meta-row { grid-template-columns: 1fr; }
    .page-hero { padding: 76px 0 52px; }
    .page-hero h1 { font-size: clamp(2.8rem, 15vw, 4.2rem); }
    .service-row { min-height: 0; }
    .service-image { min-height: 250px; }
    .package-card { min-height: 0; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .footer-grid > div:last-child { grid-column: auto; }
    .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    [data-reveal] { opacity: 1; transform: none; transition: none; }
    .disc-stage { transition: none; }
    /* ECOTEX 首頁仍保留低幅度展示動畫，避免 Windows 關閉動畫後整個光碟完全靜止。 */
    .disc-float { animation: disc-bob-reduced 8s ease-in-out infinite !important; }
    .disc { animation: disc-turn 24s linear infinite !important; }
    .disc::before { animation: disc-shimmer 7s ease-in-out infinite !important; }
    .disc-stage::before { animation: pulse-ring 8s ease-in-out infinite !important; }
    .disc-stage::after { animation: ring-spin 38s linear infinite !important; }
    .orbit-card.one, .orbit-card.two, .orbit-card.three { animation-duration: 11s !important; }
}
@keyframes disc-bob-reduced {
    0%,100% { transform: translate3d(0, 3px, 0) rotate(-1.5deg); }
    50% { transform: translate3d(0, -10px, 8px) rotate(1.5deg); }
}

/* Hero headline tuning for CJK line balance */
.hero h1 { font-size: clamp(2.7rem, 6vw, 4.9rem); }
html[lang="ja"] .hero h1 { font-size: clamp(2.4rem, 5vw, 4.35rem); }
@media (max-width: 560px) {
    .hero h1 { font-size: clamp(2.55rem, 11.5vw, 3.2rem); }
    html[lang="ja"] .hero h1 { font-size: clamp(2.2rem, 10.2vw, 2.65rem); }
}