:root{--bg:#f6fbff;--ink:#071827;--muted:#526b80;--line:#d9e8f4;--blue:#1573d4;--blue2:#0b4f9c;--card:#ffffff;--soft:#eaf5ff;--green:#18a957;--amber:#ff9f1c}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Noto Sans TC","PingFang TC","Microsoft JhengHei",Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.55}a{color:inherit;text-decoration:none}.site-nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:0 34px;border-bottom:1px solid var(--line);background:rgba(246,251,255,.93);backdrop-filter:blur(16px);position:sticky;top:0;z-index:10}.brand{font-weight:900;font-size:22px;letter-spacing:-.03em}.brand small{display:block;font-size:12px;letter-spacing:.08em;color:var(--blue);margin-top:-3px}.nav-links{display:flex;gap:22px;color:var(--muted);font-weight:760;font-size:14px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;border-radius:999px;padding:0 18px;font-weight:850;white-space:nowrap;border:1px solid transparent}.btn.primary{background:var(--blue);color:#fff!important}.btn.secondary{background:#fff;color:var(--ink);border-color:var(--line)}.btn.line{background:var(--green);color:#fff!important}.wrap{max-width:1220px;margin:0 auto;padding:0 28px}.hero{padding:76px 0 84px}.hero-grid{display:grid;grid-template-columns:1.03fr .97fr;gap:56px;align-items:center}.eyebrow{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);font-weight:900;margin-bottom:16px}.hero h1{margin:0;font-size:clamp(42px,5.2vw,68px);line-height:1.04;letter-spacing:-.06em}.hero p{font-size:21px;line-height:1.65;color:var(--muted);max-width:650px;margin:22px 0 0}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.trust-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:30px}.trust-item{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px}.trust-item b{display:block;font-size:20px}.trust-item span{color:var(--muted);font-size:13px}.visual{position:relative;border:1px solid var(--line);border-radius:34px;background:linear-gradient(135deg,#fff,#e4f2ff);overflow:hidden;min-height:420px}.visual:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(21,115,212,.24),transparent 26%),repeating-linear-gradient(90deg,rgba(21,115,212,.08) 0 1px,transparent 1px 88px),repeating-linear-gradient(0deg,rgba(21,115,212,.06) 0 1px,transparent 1px 88px)}.visual span{position:absolute;left:28px;right:28px;bottom:24px;color:#12324e;font-weight:850;font-size:15px}.section{padding:88px 0}.section h2{margin:0;font-size:clamp(34px,4.1vw,56px);line-height:1.06;letter-spacing:-.05em}.section-head p{font-size:19px;line-height:1.72;color:var(--muted);max-width:760px;margin:18px 0 0}.section-head{margin-bottom:34px}.grid{display:grid;gap:22px}.cards2{grid-template-columns:repeat(2,1fr)}.cards3{grid-template-columns:repeat(3,1fr)}.cards4{grid-template-columns:repeat(4,1fr)}.card{background:var(--card);border:1px solid var(--line);border-radius:26px;padding:28px;min-height:205px}.card h3{margin:0;font-size:23px;line-height:1.16;letter-spacing:-.03em}.card p{margin:12px 0 0;color:var(--muted);font-size:16px;line-height:1.65}.card .tag{display:inline-flex;margin-bottom:14px;color:var(--blue);font-size:13px;font-weight:900}.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:32px;align-items:stretch}.split.reverse{grid-template-columns:1.1fr .9fr}.panel{background:#fff;border:1px solid var(--line);border-radius:30px;padding:40px}.panel p{color:var(--muted);font-size:18px}.list{margin-top:24px;border-top:1px solid var(--line)}.list div{display:flex;justify-content:space-between;gap:18px;padding:15px 0;border-bottom:1px solid var(--line);font-weight:850}.list small{font-weight:700;color:var(--muted);text-align:right}.band{background:#071827;color:#eef8ff}.band p{color:#b8cadd}.band .card,.band .panel{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.14)}.band .list div{border-color:rgba(255,255,255,.16)}.band .visual{background:linear-gradient(135deg,#102b45,#0b1727);border-color:rgba(255,255,255,.14)}.band .visual span{color:#d8efff}.product-row{display:grid;grid-template-columns:1.2fr repeat(3,1fr);gap:18px}.product-main{background:#fff;border:1px solid var(--line);border-radius:30px;padding:34px}.product-main h3{font-size:32px;margin:0;letter-spacing:-.04em}.mini{background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px}.mini b{display:block;font-size:18px;margin-bottom:8px}.mini p{margin:0;color:var(--muted);font-size:15px}.process{counter-reset:step}.process .card{position:relative;padding-left:72px}.process .card:before{counter-increment:step;content:counter(step);position:absolute;left:26px;top:28px;width:32px;height:32px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900}.quote{font-size:30px;line-height:1.38;letter-spacing:-.035em;color:var(--ink);margin:0}.quote small{display:block;margin-top:18px;color:var(--muted);font-size:15px;font-weight:760}.faq{display:grid;gap:14px}.faq details{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px}.faq summary{font-size:18px;font-weight:850;cursor:pointer}.faq p{color:var(--muted);margin:12px 0 0}.cta{background:#071827;color:#eef8ff;border-radius:38px;padding:56px;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center}.cta h2{margin:0;font-size:42px;letter-spacing:-.045em}.cta p{color:#b8cadd;margin:12px 0 0}.footer{padding:46px 0;border-top:1px solid var(--line);color:var(--muted);font-size:14px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:28px}.footer strong{display:block;color:var(--ink);margin-bottom:10px}.hub{padding:72px 0}.hub h1{font-size:58px;line-height:1.02;letter-spacing:-.06em;margin:0}.hub p{font-size:20px;color:var(--muted);max-width:760px}.preview-list{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:34px}.preview-card{background:#fff;border:1px solid var(--line);border-radius:30px;padding:30px;display:flex;flex-direction:column;gap:18px}.preview-card strong{font-size:24px}.preview-card p{color:var(--muted);margin:0}.notice{background:#fff8df;border:1px solid #efd88c;color:#60480c;border-radius:18px;padding:16px 18px;margin-top:28px;font-weight:700}.palette-a{--blue:#1573d4}.palette-b{--blue:#0f5ea8;--bg:#f4f8fb}.palette-c{--blue:#1b80cc;--bg:#f5fbff}@media(max-width:900px){.nav-links{display:none}.site-nav{padding:0 18px}.hero-grid,.split,.split.reverse,.cta,.footer-grid,.preview-list,.product-row,.trust-row{grid-template-columns:1fr}.hero{padding:48px 0}.hero h1,.hub h1{font-size:42px}.visual{min-height:330px}.cards2,.cards3,.cards4{grid-template-columns:1fr}.section{padding:58px 0}.cta{padding:34px}.wrap{padding:0 18px}.list div{display:block}.list small{display:block;text-align:left;margin-top:4px}}

/* Additional full-homepage variants D-H */
.alt body,.alt{background:#fff;color:#111}.alt-nav{min-height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 30px;position:sticky;top:0;z-index:20;border-bottom:1px solid var(--alt-line,#e8e8e8);background:color-mix(in srgb,var(--alt-bg,#fff) 92%,transparent);backdrop-filter:blur(18px)}.alt-nav .brand{font-weight:850;letter-spacing:-.04em}.alt-nav nav{display:flex;gap:18px;font-size:13px;color:var(--alt-muted,#666);font-weight:700}.alt-nav a{text-decoration:none;color:inherit}.alt-wrap{max-width:1180px;margin:0 auto;padding:0 28px}.alt-hero{padding:86px 0}.alt-hero h1{font-size:clamp(46px,6.4vw,86px);line-height:.98;letter-spacing:-.07em;margin:0;color:var(--alt-ink,#111);text-wrap:balance}.alt-hero p{font-size:21px;line-height:1.7;color:var(--alt-muted,#5f6670);max-width:720px}.alt-kicker{font-size:12px;text-transform:uppercase;letter-spacing:.14em;color:var(--alt-accent,#0071e3);font-weight:900;margin-bottom:18px}.alt-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.alt-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:var(--alt-radius,999px);font-weight:850;border:1px solid var(--alt-line,#ddd);background:var(--alt-accent,#0071e3);color:#fff}.alt-btn.ghost{background:transparent;color:var(--alt-ink,#111)}.alt-section{padding:86px 0}.alt-section h2{font-size:clamp(34px,4.5vw,60px);line-height:1.04;letter-spacing:-.06em;margin:0 0 18px;color:var(--alt-ink,#111);text-wrap:balance}.alt-section>div>p,.alt-head p{font-size:18px;line-height:1.7;color:var(--alt-muted,#5f6670);max-width:780px}.alt-grid{display:grid;gap:20px}.alt-2{grid-template-columns:repeat(2,1fr)}.alt-3{grid-template-columns:repeat(3,1fr)}.alt-4{grid-template-columns:repeat(4,1fr)}.alt-card{background:var(--alt-card,#fff);border:1px solid var(--alt-line,#e6e8ee);border-radius:var(--alt-card-radius,18px);padding:28px;min-height:190px;color:var(--alt-ink,#111)}.alt-card h3{font-size:24px;line-height:1.15;letter-spacing:-.04em;margin:0}.alt-card p{color:var(--alt-muted,#5f6670);line-height:1.65;margin:12px 0 0}.alt-visual{min-height:420px;border-radius:var(--alt-card-radius,22px);border:1px solid var(--alt-line,#e6e8ee);background:var(--visual-bg,linear-gradient(135deg,#f7f7f8,#e9eef8));position:relative;overflow:hidden}.alt-visual:before{content:"";position:absolute;inset:0;background:var(--visual-pattern,radial-gradient(circle at 70% 20%,rgba(0,113,227,.2),transparent 28%),linear-gradient(90deg,rgba(0,0,0,.04) 1px,transparent 1px),linear-gradient(0deg,rgba(0,0,0,.04) 1px,transparent 1px));background-size:auto,72px 72px,72px 72px}.alt-visual span{position:absolute;left:28px;right:28px;bottom:24px;font-weight:850;color:var(--visual-text,#1d1d1f)}.alt-split{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}.alt-band{background:var(--band-bg,#111);color:var(--band-ink,#fff)}.alt-band h2,.alt-band .alt-card h3{color:var(--band-ink,#fff)}.alt-band p,.alt-band .alt-card p{color:var(--band-muted,rgba(255,255,255,.72))}.alt-band .alt-card{background:var(--band-card,rgba(255,255,255,.06));border-color:var(--band-line,rgba(255,255,255,.12));color:var(--band-ink,#fff)}.alt-list{border-top:1px solid var(--alt-line,#e6e8ee);margin-top:22px}.alt-list div{display:flex;justify-content:space-between;gap:20px;padding:16px 0;border-bottom:1px solid var(--alt-line,#e6e8ee);font-weight:850}.alt-list small{color:var(--alt-muted,#777);font-weight:700;text-align:right}.alt-band .alt-list{border-color:var(--band-line,rgba(255,255,255,.16))}.alt-band .alt-list div{border-color:var(--band-line,rgba(255,255,255,.16))}.alt-band .alt-list small{color:var(--band-muted,rgba(255,255,255,.72))}.alt-faq{display:grid;gap:14px}.alt-faq details{border:1px solid var(--alt-line,#e6e8ee);background:var(--alt-card,#fff);border-radius:var(--alt-card-radius,18px);padding:22px}.alt-faq summary{font-weight:850;font-size:18px;cursor:pointer}.alt-faq p{color:var(--alt-muted,#5f6670)}.alt-cta{border-radius:var(--alt-card-radius,26px);background:var(--cta-bg,var(--alt-ink,#111));color:var(--cta-ink,#fff);padding:50px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center}.alt-cta h2{margin:0;color:var(--cta-ink,#fff)}.alt-cta p{color:var(--cta-muted,rgba(255,255,255,.72));margin:12px 0 0}.meta-strip{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:32px}.meta-strip div{padding:14px;border:1px solid var(--alt-line,#e6e8ee);border-radius:var(--alt-radius,14px);background:var(--alt-card,#fff);font-size:13px;color:var(--alt-muted,#666)}.meta-strip b{display:block;color:var(--alt-ink,#111);font-size:15px;margin-bottom:4px}.variant-d{--alt-bg:#f5f5f7;--alt-ink:#1d1d1f;--alt-muted:#6e6e73;--alt-line:#d8d8dd;--alt-accent:#0071e3;--alt-radius:999px;--alt-card-radius:12px;--alt-card:#fff;--band-bg:#000;--visual-bg:linear-gradient(180deg,#ffffff,#f5f5f7);--visual-text:#1d1d1f}.variant-e{--alt-bg:#08090a;--alt-ink:#f7f8f8;--alt-muted:#8a8f98;--alt-line:rgba(255,255,255,.08);--alt-accent:#5e6ad2;--alt-radius:7px;--alt-card-radius:12px;--alt-card:rgba(255,255,255,.035);--band-bg:#0f1011;--band-card:rgba(255,255,255,.035);--visual-bg:linear-gradient(135deg,#0f1011,#191a1b);--visual-text:#d0d6e0;background:#08090a;color:#f7f8f8}.variant-f{--alt-bg:#fff;--alt-ink:#061b31;--alt-muted:#64748d;--alt-line:#e5edf5;--alt-accent:#533afd;--alt-radius:4px;--alt-card-radius:8px;--alt-card:#fff;--band-bg:#1c1e54;--visual-bg:linear-gradient(135deg,#f7faff,#ffffff);--visual-text:#061b31}.variant-g{--alt-bg:#1f2228;--alt-ink:#fff;--alt-muted:rgba(255,255,255,.68);--alt-line:rgba(255,255,255,.14);--alt-accent:#fff;--alt-radius:0px;--alt-card-radius:0px;--alt-card:rgba(255,255,255,.035);--band-bg:#17191d;--visual-bg:linear-gradient(135deg,#1f2228,#111317);--visual-text:#fff;background:#1f2228;color:#fff}.variant-g .alt-btn{color:#1f2228}.variant-g .alt-btn.ghost{color:#fff}.variant-h{--alt-bg:#fff;--alt-ink:#1c1c1e;--alt-muted:#555a6a;--alt-line:#dfe2ea;--alt-accent:#5b76fe;--alt-radius:12px;--alt-card-radius:26px;--alt-card:#fff;--band-bg:#ffed7a;--band-ink:#1c1c1e;--band-muted:#555a6a;--band-card:rgba(255,255,255,.7);--band-line:rgba(28,28,30,.14);--visual-bg:linear-gradient(135deg,#ffd8f4,#c3faf5);--visual-text:#1c1c1e}.hub .preview-list{grid-template-columns:repeat(4,1fr)}@media(max-width:900px){.alt-nav nav{display:none}.alt-hero,.alt-section{padding:56px 0}.alt-split,.alt-2,.alt-3,.alt-4,.alt-cta,.meta-strip,.hub .preview-list{grid-template-columns:1fr}.alt-hero h1{font-size:42px}.alt-visual{min-height:320px}.alt-wrap{padding:0 18px}.alt-list div{display:block}.alt-list small{display:block;text-align:left;margin-top:4px}.alt-cta{padding:32px}.alt-nav{padding:0 18px}}

.nowrap{white-space:nowrap}

.variant-h .alt-hero h1{font-size:clamp(40px,5.4vw,76px)}
@media(max-width:480px){.variant-h .alt-hero h1{font-size:36px}.nowrap{white-space:normal}}


/* 3DSTU current brand-color image assets */
.alt-visual.brand-img{background:#0f172a;display:block;overflow:hidden}
.alt-visual.brand-img:before{display:none}
.alt-visual.brand-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;display:block;transform:none}
.alt-visual.brand-img span{left:24px;right:24px;bottom:22px;color:#fff;background:rgba(15,23,42,.62);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(10px);border-radius:16px;padding:14px 16px;font-size:14px;line-height:1.5}
.alt-visual.brand-img.hero span{font-weight:900;font-size:16px}
.variant-d .alt-visual.brand-img,.variant-f .alt-visual.brand-img,.variant-h .alt-visual.brand-img{box-shadow:0 24px 70px rgba(15,23,42,.14)}
.variant-e .alt-visual.brand-img,.variant-g .alt-visual.brand-img{box-shadow:0 30px 90px rgba(2,6,23,.45)}


.customer-proof{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:30px}.customer-proof div{padding:16px;border:1px solid var(--alt-line,#e6e8ee);border-radius:var(--alt-radius,16px);background:var(--alt-card,#fff);font-size:14px;color:var(--alt-muted,#666)}.customer-proof b{display:block;color:var(--alt-ink,#111);font-size:18px;margin-bottom:5px}.alt-band .customer-proof div{background:var(--band-card,rgba(255,255,255,.06));border-color:var(--band-line,rgba(255,255,255,.12));color:var(--band-muted,rgba(255,255,255,.72))}.alt-band .customer-proof b{color:var(--band-ink,#fff)}@media(max-width:900px){.customer-proof{grid-template-columns:1fr 1fr}}@media(max-width:520px){.customer-proof{grid-template-columns:1fr}}