:root{--black:#121417;--black-2:#2a2d33;--hero-bg:#2b4a74;--hero-bg-deep:#24405f;--hero-glow:#305283;--ink:#1c1e22;--slate:#44484f;--muted:#5a5f68;--line:#e4e9f0;--bg:#f2f7fd;--card:#ffffff;--blue-light:#78a5e0;--blue-soft:#a9c7ee;--blue:#2e64ab;--blue-on-black:#9cc1ef;--on-black:#ececec;--on-black-soft:#cfd3d9;--on-black-muted:#9aa0a8;--on-hero-muted:#dfe5ee;--on-dark:#ffffff;--input-border:#8a94a3;--tint-blue:#e8f1fc;--ph-border:#b6c0cf;--ph-bg:#fbfcfd;--tbc-bg:#fff4e0;--tbc-ink:#7a5410;--error:#b42318;--radius-panel:16px;--r:12px;--radius-qr:10px;--radius-control:8px;--radius-menu:6px;--radius-tag:4px;--radius-pill:999px;--sh:0 1px 2px rgba(18,20,23,.06), 0 8px 24px rgba(18,20,23,.06);--shadow-menu:0 12px 24px rgba(18,20,23,.08);--shadow-focus-input:0 0 0 3px rgba(18,20,23,.12);}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;font-family:Inter,"Noto Sans TC",system-ui,sans-serif;color:var(--ink);background:#fff;line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
html.lang-en .zh,html.lang-zh .en{display:none!important}
html.lang-zh body{font-family:"Noto Sans TC",Inter,system-ui,sans-serif}
a{color:inherit}img{max-width:100%}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:"Source Serif 4","Noto Serif TC",Georgia,serif;color:var(--black);line-height:1.2;margin:0 0 .5em;font-weight:600}
html.lang-zh h1,html.lang-zh h2,html.lang-zh h3{font-family:"Noto Serif TC","Source Serif 4",serif}
h2{font-size:clamp(1.7rem,3vw,2.4rem)}h3{font-size:1.2rem}
section{padding:56px 0 96px}.alt{background:var(--bg)}
.kicker{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:600;color:var(--blue);margin:0 0 .8em}
.sec-head{max-width:760px;margin-bottom:48px}.lead{color:var(--muted);font-size:1.08rem;margin:0}
.btn{display:inline-flex;align-items:center;gap:.5em;padding:.8em 1.4em;border-radius:8px;font-weight:600;text-decoration:none;border:1px solid transparent;cursor:pointer;font-size:.95rem;transition:.2s;font-family:inherit}
.btn-acc{background:var(--blue-soft);color:var(--black)}.btn-acc:hover{background:var(--blue-light)}
.btn-ghost{border-color:rgba(255,255,255,.35);color:#fff}.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-navy{background:var(--black);color:#fff}.btn-navy:hover{background:var(--black-2)}
.btn-line{border-color:var(--line);color:var(--black);background:#fff}.btn-line:hover{border-color:var(--black)}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
/* header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;margin-right:auto}
.logo-img{height:30px;width:auto;display:block}.logo-sep{width:1px;height:30px;background:var(--line)}
.logo-mark{width:40px;height:40px;border-radius:8px;background:var(--black);color:#fff;display:grid;place-items:center;font-family:"Source Serif 4",serif;font-weight:700;font-size:1.3rem;position:relative}
.logo-mark::after{content:"";position:absolute;left:9px;right:9px;bottom:7px;height:2px;background:var(--blue-light)}
.logo-text{line-height:1.15}.logo-text b{display:block;color:var(--black);font-size:.82rem;font-weight:600}
.logo-text small{color:var(--muted);font-size:.72rem;letter-spacing:.03em}html.lang-zh .logo-text b,html.lang-zh .logo-text small{white-space:nowrap}
.menu{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.menu a{text-decoration:none;padding:8px 12px;border-radius:6px;font-size:.92rem;font-weight:500;color:var(--slate)}.menu a:hover{color:var(--black);background:var(--bg)}
.lang{display:flex;flex-shrink:0;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.lang button{border:0;background:#fff;padding:7px 11px;font:600 .82rem Inter,"Noto Sans TC",sans-serif;color:var(--slate);cursor:pointer}
.lang button[aria-pressed=true]{background:var(--black);color:#fff}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:8px;width:42px;height:42px;cursor:pointer}
.burger span{display:block;width:18px;height:2px;background:var(--black);margin:4px auto;transition:.2s}
/* hero */
.hero{background:radial-gradient(1200px 500px at 85% -10%,var(--hero-glow) 0%,transparent 60%),linear-gradient(160deg,var(--hero-bg) 0%,var(--hero-bg-deep) 100%);color:var(--on-black);padding:56px 0 104px}
.hero-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:56px;align-items:center}
.hero .kicker{color:var(--blue-on-black)}
.hero h1{color:#fff;font-size:clamp(2.3rem,5vw,3.7rem);margin-bottom:.45em}
.hero h1 em{font-style:italic;color:var(--blue-on-black);white-space:nowrap}
.hero p.tagline{font-size:1.35rem;font-weight:600;color:var(--on-black);margin:-.1em 0 .9em;letter-spacing:.01em}
.hero p.sub{font-size:1.12rem;color:var(--on-black-soft);max-width:600px;margin:0 0 2em}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}
.glance{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:28px}
.glance-h{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid rgba(255,255,255,.14);padding-bottom:14px;margin-bottom:6px}
.glance-h b{color:#fff;font-size:1rem}.glance-h span{font-size:.8rem;color:var(--on-hero-muted);letter-spacing:.08em}
.glance dl{margin:0}.glance div{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.08)}
.glance div:last-child{border:0}.glance dt{color:var(--on-hero-muted);font-size:.9rem}.glance dd{margin:0;color:#fff;font-weight:600;text-align:right}
/* cards */
.grid{display:grid;gap:20px}.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}.g5{grid-template-columns:repeat(5,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--sh)}
.card p{color:var(--muted);margin:0}
.stage{position:relative;border-top:3px solid var(--black)}.stage:last-child{border-top-color:var(--blue-light)}
.stage .num{font-size:.75rem;letter-spacing:.12em;color:var(--blue);font-weight:700}
.ticks{list-style:none;padding:0;margin:.6em 0 0}.ticks li{position:relative;padding-left:20px;margin:.35em 0;font-size:.93rem;color:var(--ink)}
.ticks li::before{content:"";position:absolute;left:2px;top:.62em;width:8px;height:8px;border-radius:2px;background:var(--blue-light)}
.diff h3{font-size:1.08rem}.diff .ic{width:36px;height:36px;border-radius:8px;background:var(--tint-blue);color:var(--black);display:grid;place-items:center;font-weight:700;margin-bottom:14px;font-size:.85rem}
.new{border-top:3px solid var(--blue-light)}.badge{display:inline-block;font-size:.7rem;font-weight:700;letter-spacing:.1em;padding:3px 8px;border-radius:4px;background:var(--black);color:#fff;margin-right:6px}
.badge.soft{background:var(--tint-blue);color:var(--blue)}
.core{padding:22px}.core .code{font-size:.72rem;letter-spacing:.12em;color:var(--slate);font-weight:600}.core h3{font-size:1.05rem;margin:.4em 0}
.subh{margin:64px 0 24px;font-size:1.4rem}
/* tools */
.calc label{display:block;font-weight:600;font-size:.9rem;margin:16px 0 6px}
.inp{width:100%;padding:12px 14px;border:1px solid var(--input-border);border-radius:8px;font:500 1.05rem Inter,sans-serif;color:var(--ink)}
.inp:focus{border-color:var(--black);outline:none;box-shadow:var(--shadow-focus-input)}
.out{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0}
.out div{background:var(--bg);border-radius:8px;padding:14px}.out small{color:var(--muted);display:block;font-size:.8rem}
.out b{font-size:1.45rem;color:var(--black);font-family:"Source Serif 4",serif}
.note{font-size:.82rem;color:var(--muted)}
.breakdown{font-size:.85rem;color:var(--slate);margin:0}
.cal{list-style:none;margin:0;padding:0}.cal li{display:grid;grid-template-columns:140px 1fr;gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.cal li:last-child{border:0}.cal .when{font-weight:700;color:var(--blue);font-size:.86rem}.cal b{display:block;color:var(--black)}.cal span.d{color:var(--muted);font-size:.9rem}
/* alliance */
.ally .loc{font-size:.75rem;letter-spacing:.12em;font-weight:700;color:var(--slate)}
.ally.hq{background:var(--blue-soft);color:var(--ink);border-color:var(--blue-soft)}.ally.hq h3{color:var(--black)}.ally.hq p{color:var(--ink)}.ally.hq .loc{color:var(--black)}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:16px 0}.chip{font-size:.8rem;padding:4px 10px;border-radius:999px;background:var(--bg);border:1px solid var(--line);color:var(--ink)}
.ally.hq .chip{background:rgba(255,255,255,.35);border-color:rgba(255,255,255,.6);color:var(--black)}
.tz{font-size:.8rem;color:var(--muted)}.ally.hq .tz{color:var(--black-2)}
/* about */
.about-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:56px}
.about-grid p{color:var(--muted)}
.creds{border:1px solid var(--line);border-radius:var(--r);background:#fff}.creds div{display:flex;justify-content:space-between;gap:16px;padding:16px 22px;border-bottom:1px solid var(--line)}
.creds div:last-child{border:0}.creds dt{color:var(--muted);font-size:.9rem}.creds dd{margin:0;font-weight:600;color:var(--black);text-align:right}
/* testimonials */
.ph{border:1.5px dashed var(--ph-border);background:var(--ph-bg);box-shadow:none}.ph .tag{display:inline-block;font-size:.7rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;background:var(--tbc-bg);color:var(--tbc-ink);padding:3px 8px;border-radius:4px;margin-bottom:12px}
.ph blockquote{margin:0 0 12px;font-style:italic;color:var(--slate)}.ph cite{font-size:.85rem;color:var(--muted);font-style:normal}
.quote{border-top:3px solid var(--blue-light)}.quote blockquote{margin:0 0 14px;font-style:italic;color:var(--ink)}.quote cite{font-size:.85rem;color:var(--muted);font-style:normal}.guide .meta{display:flex;gap:8px;align-items:center;margin-bottom:10px}.guide h3{font-size:1.05rem}
/* faq */
#disclaimer,#privacy{display:none;background:var(--bg);padding:40px 0 72px}#disclaimer:target,#privacy:target{display:block}.form .note a{color:var(--blue);font-weight:600}.disc{max-width:760px}.disc ul{margin:24px 0;padding-left:1.1em;color:var(--muted)}.disc li{margin:.6em 0}.disc li b{color:var(--black)}.disc .note a{color:var(--blue);font-weight:600;text-decoration:none}.faq{max-width:860px}.faq-group{font-size:1.1rem;color:var(--blue);margin:44px 0 4px;padding-bottom:10px;border-bottom:2px solid var(--blue-light)}.faq-group:first-child{margin-top:0}.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:22px 40px 22px 0;font-weight:600;color:var(--black);position:relative;font-size:1.05rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:16px;font-size:1.6rem;font-weight:300;color:var(--blue);transition:.2s}
.faq details[open] summary::after{transform:rotate(45deg)}.faq details p{margin:0 0 22px;color:var(--muted)}
/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:40px}
.info dl{margin:0}.info dl>div{display:grid;grid-template-columns:120px 1fr;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.info dt{color:var(--muted);font-size:.9rem}.info dd{margin:0;font-weight:500}.info a{color:var(--black);font-weight:600}
.copy-btn{font:600 .75rem Inter,"Noto Sans TC",sans-serif;border:1px solid var(--line);background:#fff;color:var(--blue);border-radius:6px;padding:3px 9px;margin-left:6px;cursor:pointer}.copy-btn:hover{border-color:var(--blue)}.copied{font-size:.8rem;color:var(--blue)}
.qr-row{display:flex;gap:16px;margin-top:22px;flex-wrap:wrap}
.qr{margin:0;padding:12px;background:#fff;border:1px solid var(--line);border-radius:10px;text-align:center;width:136px}
.qr-img{display:block;width:110px;height:110px;margin:0 auto}
.qr-ph{border:1.5px dashed var(--ph-border);border-radius:6px;display:grid;place-items:center;font-size:.75rem;color:var(--muted);padding:8px;line-height:1.3;box-sizing:border-box;background:var(--ph-bg)}
.qr figcaption{margin-top:8px;font-size:.78rem;line-height:1.3}.qr figcaption b{display:block;color:var(--black)}.qr figcaption>span{color:var(--muted)}
.tbc{display:inline-block;font-size:.72rem;font-weight:700;color:var(--tbc-ink);background:var(--tbc-bg);padding:2px 8px;border-radius:4px}
.map{display:block;margin-top:20px;padding:22px;border-radius:var(--r);background:linear-gradient(135deg,var(--tint-blue),var(--bg));border:1px solid var(--line);text-decoration:none}
.map b{color:var(--black);display:block}.map span{display:block;color:var(--muted);font-size:.9rem}.map em{font-style:normal;color:var(--blue);font-weight:600;font-size:.9rem;display:inline-block;margin-top:8px}
.form label{display:block;font-weight:600;font-size:.88rem;margin-bottom:6px}.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.form .inp{font-size:.98rem}textarea.inp{min-height:120px;resize:vertical}select.inp{background:#fff}
.form .actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
footer{background:var(--black);color:var(--on-black-muted);padding:48px 0 32px;font-size:.88rem}
.foot{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:flex-start}footer .logo-text{display:block!important}footer .logo-text b{color:#fff}footer .logo-text small{color:var(--on-black-muted)}
footer a{color:var(--on-black-soft);text-decoration:none}footer a:hover{color:#fff}.fl{display:flex;gap:18px;flex-wrap:wrap}
.copy{border-top:1px solid rgba(255,255,255,.1);margin-top:28px;padding-top:20px}
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}}
.menu .m-cta{display:none}
.menu a,.btn{white-space:nowrap}
@media(max-width:1320px) and (min-width:961px){.nav .logo-text,.nav .logo-sep{display:none}}
@media(max-width:960px) and (min-width:641px){.nav .logo-text small{display:none}}
.lang button{white-space:nowrap}
@media(max-width:1080px){.g5{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(2,1fr)}.menu a{padding:8px 8px}}
@media(max-width:960px){.burger{display:block}.nav .cta{display:none}
.menu{position:absolute;top:72px;left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:12px 24px 20px;display:none;box-shadow:var(--shadow-menu)}
.menu.open{display:flex}.menu a{display:block;padding:12px 4px;font-size:1rem;border-bottom:1px solid var(--line);border-radius:0}
.menu .m-cta{display:block}.hero-grid,.about-grid,.contact-grid{grid-template-columns:1fr}.g3{grid-template-columns:1fr 1fr}}
@media(max-width:640px){section{padding:32px 0 64px}.hero{padding:32px 0 64px}.g2,.g3,.g4,.g5{grid-template-columns:1fr}.form .row{grid-template-columns:1fr}
.cal li{grid-template-columns:1fr;gap:4px}.info dl>div{grid-template-columns:1fr;gap:2px}.logo-text,.logo-sep{display:none}.qr-row{gap:8px;justify-content:space-between}.qr{width:calc(33.3% - 6px);padding:8px}.qr-img{width:min(96px,100%);height:auto;aspect-ratio:1}.logo-img{height:24px}.logo-text b{font-size:.98rem;white-space:nowrap}.logo-img{height:30px;width:auto;display:block}.logo-sep{width:1px;height:30px;background:var(--line)}
.logo-mark{width:36px;height:36px}.lang button{padding:7px 9px}.wrap{padding:0 18px}.nav{gap:10px}.out{grid-template-columns:1fr 1fr}}

/* Clear Sky look (all screen sizes) */
:root{--black:#1f2d44;--black-2:#2c3d5a;--ink:#24324a;--hero-bg:#f7fbff;--hero-bg-deep:#dcebfb;--hero-glow:#c4dbf6;--r:14px;--radius-panel:18px;--amber:#f2b35b;--green:#3f9e6e;--green-ink:#2e7d55}.hero{color:var(--ink)}.hero h1{color:var(--black)}.hero h1 em{color:var(--blue)}.hero .kicker{color:var(--blue)}.hero p.tagline{color:var(--black)}.hero p.sub{color:var(--muted)}.hero .btn-ghost{border-color:var(--black);color:var(--black)}.hero .btn-ghost:hover{background:#fff}.glance{background:rgba(255,255,255,.8);border:1px solid var(--line);box-shadow:var(--sh)}.glance-h{border-bottom-color:var(--line)}.glance-h b{color:var(--black)}.glance-h span{color:var(--muted)}.glance div{border-bottom-color:var(--line)}.glance dt{color:var(--muted)}.glance dd{color:var(--black)}.assure{list-style:none;margin:20px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px 22px;font-size:.92rem;color:var(--ink)}.assure li,.promise,.trust-item{display:flex;align-items:center;gap:8px}.ck{flex:none;width:18px;height:18px;border-radius:50%;background:var(--green);display:grid;place-items:center}.ck::after{content:"";width:7px;height:4px;border-left:2px solid #fff;border-bottom:2px solid #fff;transform:translateY(-1px) rotate(-45deg)}.trust{padding:22px 0;background:#fff;border-bottom:1px solid var(--line)}.trust-row{display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:center}.trust-item{font-weight:600;font-size:.9rem;color:var(--black)}.ticks li::before{width:9px;height:5px;border-radius:0;background:none;border-left:2px solid var(--green);border-bottom:2px solid var(--green);transform:rotate(-45deg);top:.5em}.badge:not(.soft){background:var(--amber);color:var(--black)}.ico{width:42px;height:42px;border-radius:12px;background:var(--tint-blue);display:grid;place-items:center;margin-bottom:14px}.ico svg{width:22px;height:22px;stroke:var(--blue);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.quote::before{content:"\201C";display:block;font:700 3.2rem/.7 "Source Serif 4",Georgia,serif;color:var(--amber);margin:12px 0 4px}.promise{margin:14px 0 0;font-size:.9rem;font-weight:600;color:var(--green-ink)}@media(max-width:640px){.calc .inp,.form .inp{background:var(--black);color:#fff;border-color:var(--black);caret-color:#fff;-webkit-text-fill-color:#fff;color-scheme:dark}.calc .inp:focus,.form .inp:focus{box-shadow:0 0 0 3px var(--blue-soft)}.form select.inp option{background:var(--black);color:#fff}}