:root{
  --bg:#0b1026; --surface:#121933; --surface2:#1a2347;
  --primary:#6366f1; --accent:#22d3ee; --pink:#ec4899;
  --text:#eef2ff; --muted:#9aa4c4; --ok:#34d399;
  --radius:18px; --max:1160px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{background:var(--bg);color:var(--text);
  font-family:"PingFang TC","Microsoft JhengHei","Segoe UI",sans-serif;line-height:1.7;}
a{color:var(--accent);}
img{max-width:100%;display:block;}
.container{max-width:var(--max);margin:0 auto;padding:0 24px;}
section{position:relative;}

/* ===== Top bar ===== */
.topbar{position:sticky;top:0;z-index:40;background:rgba(11,16,38,.85);backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.08);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:66px;max-width:var(--max);margin:0 auto;padding:0 24px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:1.15rem;text-decoration:none;color:var(--text);}
.brand .logo{width:36px;height:36px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--accent));font-size:1.1rem;}
.nav{display:flex;gap:4px;list-style:none;}
.nav a{padding:8px 14px;border-radius:12px;color:var(--muted);text-decoration:none;font-weight:600;font-size:.94rem;transition:.2s;}
.nav a:hover{color:var(--text);background:rgba(255,255,255,.06);}
.nav a.active{color:#fff;background:linear-gradient(90deg,var(--primary),var(--accent));}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;}
.burger span{width:26px;height:3px;background:var(--text);border-radius:2px;}
@media(max-width:860px){
  .nav{position:fixed;top:66px;right:0;width:70%;max-width:300px;height:calc(100vh - 66px);
    flex-direction:column;background:var(--surface);padding:24px;gap:6px;transform:translateX(100%);transition:.35s;}
  .nav.open{transform:translateX(0);}
  .nav a{padding:14px;border-radius:12px;}
  .burger{display:flex;}
}

/* ===== Buttons ===== */
.btn{display:inline-block;padding:14px 30px;border-radius:999px;font-weight:800;text-decoration:none;
  border:none;cursor:pointer;transition:.25s;font-size:1rem;}
.btn-primary{background:linear-gradient(90deg,var(--primary),var(--accent));color:#fff;box-shadow:0 10px 30px rgba(99,102,241,.35);}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(99,102,241,.5);}
.btn-ghost{background:transparent;border:2px solid rgba(255,255,255,.25);color:var(--text);}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);}

/* ===== Hero ===== */
.hero{min-height:88vh;display:flex;align-items:center;overflow:hidden;
  background:radial-gradient(circle at 20% 20%,rgba(99,102,241,.35),transparent 45%),
             radial-gradient(circle at 80% 60%,rgba(34,211,238,.25),transparent 45%),
             linear-gradient(135deg,#0b1026,#1e1b4b 60%,#0e7490);}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center;max-width:var(--max);margin:0 auto;padding:80px 24px;}
.kicker{display:inline-block;background:rgba(34,211,238,.14);color:var(--accent);
  padding:6px 16px;border-radius:999px;font-weight:700;font-size:.85rem;letter-spacing:.05em;}
.hero h1{font-size:clamp(2.4rem,5.5vw,4.6rem);font-weight:900;line-height:1.08;margin:18px 0;}
.grad{background:linear-gradient(90deg,var(--accent),var(--pink));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero p.lead{color:var(--muted);font-size:1.15rem;max-width:540px;margin:8px 0 30px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;}
.hero-card{background:var(--surface);border:1px solid rgba(255,255,255,.1);border-radius:26px;padding:40px 30px;
  text-align:center;box-shadow:0 40px 80px rgba(0,0,0,.4);position:relative;}
.hero-card .float{position:absolute;font-size:2.4rem;background:var(--surface2);width:56px;height:56px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;top:-22px;left:30px;border:1px solid rgba(255,255,255,.1);}
.hero-card .big{font-size:3.4rem;margin-top:14px;}
.hero-card h3{margin:8px 0 4px;}
.hero-card small{color:var(--muted);}
.hero-card .pulse{margin-top:22px;font-weight:800;color:var(--ok);font-size:.95rem;}
.pulse::before{content:"●";display:inline-block;margin-right:6px;animation:blink 1.6s infinite;}
@keyframes blink{0%,100%{opacity:1;}50%{opacity:.25;}}
@media(max-width:860px){.hero-grid{grid-template-columns:1fr;padding:60px 24px;}.hero{min-height:auto;}}

/* ===== Sections ===== */
.sec-pad{padding:80px 0;}
.sec-head{text-align:center;margin-bottom:46px;}
.sec-head .tag{color:var(--accent);font-weight:800;letter-spacing:.12em;font-size:.85rem;}
.sec-head h2{font-size:clamp(1.8rem,3.5vw,2.8rem);font-weight:900;margin:8px 0;}
.sec-head p{color:var(--muted);max-width:560px;margin:10px auto 0;}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.stat{background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:32px 20px;text-align:center;transition:.3s;}
.stat:hover{transform:translateY(-6px);border-color:var(--accent);}
.stat b{display:block;font-size:2.8rem;font-weight:900;color:var(--accent);line-height:1;}
.stat span{color:var(--muted);font-size:.9rem;display:block;margin-top:8px;}
@media(max-width:760px){.stats{grid-template-columns:repeat(2,1fr);}}

/* feature grid */
.grid{display:grid;gap:20px;}
.grid.four{grid-template-columns:repeat(4,1fr);}
.grid.three{grid-template-columns:repeat(3,1fr);}
.card{background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:30px;transition:.3s;}
.card:hover{transform:translateY(-8px);border-color:var(--accent);box-shadow:0 20px 40px rgba(0,0,0,.25);}
.card .ic{width:58px;height:58px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.7rem;
  background:linear-gradient(135deg,var(--primary),var(--accent));margin-bottom:16px;}
.card h3{margin-bottom:8px;font-size:1.2rem;}
.card p{color:var(--muted);font-size:.92rem;}
@media(max-width:900px){.grid.four{grid-template-columns:repeat(2,1fr);}.grid.three{grid-template-columns:1fr;}}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s;}
.step{position:relative;background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:30px 24px;}
.step .num{font-size:2.2rem;font-weight:900;color:var(--accent);}
.step h3{margin:6px 0;font-size:1.15rem;}
.step p{color:var(--muted);font-size:.9rem;}
.step:not(:last-child)::after{content:"→";position:absolute;right:-14px;top:50%;transform:translateY(-50%);font-size:1.6rem;color:var(--pink);z-index:2;}
@media(max-width:760px){.steps{grid-template-columns:1fr;}.step:not(:last-child)::after{display:none;}}

/* calendar */
.chips{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:32px;}
.chip{padding:9px 20px;border-radius:999px;background:var(--surface);border:1px solid rgba(255,255,255,.1);
  color:var(--muted);cursor:pointer;font-weight:700;transition:.2s;}
.chip.active,.chip:hover{border-color:transparent;background:linear-gradient(90deg,var(--primary),var(--accent));color:#fff;}
.timeline{display:flex;flex-direction:column;gap:18px;max-width:860px;margin:0 auto;}
.t-item{display:grid;grid-template-columns:120px 1fr auto;gap:24px;align-items:center;background:var(--surface);
  border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:22px 26px;transition:.3s;}
.t-item:hover{transform:translateX(6px);border-color:var(--accent);}
.t-date{text-align:center;font-weight:900;color:var(--accent);font-size:1.1rem;border-right:1px dashed rgba(255,255,255,.15);padding-right:10px;}
.t-date small{display:block;color:var(--muted);font-size:.8rem;font-weight:600;}
.t-body h3{font-size:1.2rem;margin-bottom:4px;}
.t-body p{color:var(--muted);font-size:.88rem;}
.badge{padding:5px 14px;border-radius:999px;font-size:.8rem;font-weight:800;white-space:nowrap;}
.badge.soon{background:var(--pink);color:#fff;}
.badge.sale{background:var(--ok);color:#052;}
.badge.gone{background:var(--muted);color:#222;}
@media(max-width:680px){.t-item{grid-template-columns:1fr;text-align:left;}.t-date{border-right:none;border-bottom:1px dashed rgba(255,255,255,.15);padding-bottom:8px;}}

/* pricing */
.price-card{background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:22px;padding:36px 28px;display:flex;flex-direction:column;position:relative;transition:.3s;}
.price-card:hover{transform:translateY(-10px);}
.price-card.featured{border-color:transparent;background:linear-gradient(160deg,var(--surface),var(--surface2));box-shadow:0 20px 50px rgba(99,102,241,.3);}
.price-card.featured::before{content:"最受歡迎";position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:linear-gradient(90deg,var(--primary),var(--accent));padding:5px 18px;border-radius:999px;font-size:.82rem;font-weight:800;}
.tier-name{font-size:1.3rem;font-weight:900;}
.price{font-size:2.6rem;font-weight:900;margin:14px 0;color:var(--accent);}
.price small{font-size:1rem;color:var(--muted);font-weight:600;}
.feat{list-style:none;margin:10px 0 26px;flex:1;}
.feat li{padding:8px 0;border-bottom:1px dashed rgba(255,255,255,.08);font-size:.94rem;}
.feat li::before{content:"✓";color:var(--ok);font-weight:900;margin-right:8px;}
.price-card .btn{text-align:center;}

/* testimonials */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.quote{background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:30px;transition:.3s;}
.quote:hover{transform:translateY(-6px);border-color:var(--accent);}
.quote .stars{color:var(--pink);font-size:1.1rem;margin-bottom:12px;}
.quote blockquote{margin:0 0 16px;font-size:1rem;}
.quote figcaption{color:var(--accent);font-weight:700;font-size:.9rem;}
@media(max-width:860px){.quote-grid{grid-template-columns:1fr;}}

/* case showcase */
.showcase{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.case{background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);overflow:hidden;transition:.3s;}
.case:hover{transform:translateY(-8px);border-color:var(--accent);}
.case .thumb{height:150px;display:flex;align-items:center;justify-content:center;font-size:3.6rem;background:linear-gradient(135deg,var(--primary),var(--accent));}
.case .info{padding:18px;}
.case .info b{font-size:1.05rem;}
.case .info span{color:var(--muted);font-size:.85rem;}
@media(max-width:760px){.showcase{grid-template-columns:repeat(2,1fr);}}

/* guide */
.guide{display:grid;grid-template-columns:220px 1fr;gap:36px;}
.guide-nav{position:sticky;top:90px;height:fit-content;display:flex;flex-direction:column;gap:6px;background:var(--surface);border-radius:var(--radius);padding:16px;}
.guide-nav a{padding:11px 16px;border-radius:12px;color:var(--muted);text-decoration:none;font-weight:600;transition:.2s;}
.guide-nav a:hover,.guide-nav a.active{background:linear-gradient(90deg,var(--primary),var(--accent));color:#fff;}
.guide-content{display:flex;flex-direction:column;gap:28px;}
.gblock{background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:32px;}
.gblock h3{font-size:1.4rem;margin-bottom:14px;display:flex;align-items:center;gap:10px;}
.gblock .n{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;font-size:.95rem;font-weight:900;color:#fff;flex:none;}
.gblock ul{padding-left:20px;}
.gblock li{margin:8px 0;color:var(--muted);}
.tips{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:16px;}
.tip{background:var(--bg);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:18px;}
.tip b{color:var(--accent);}
@media(max-width:800px){.guide{grid-template-columns:1fr;}.guide-nav{position:static;flex-direction:row;flex-wrap:wrap;}.tips{grid-template-columns:1fr;}}

/* faq */
.faq{display:flex;flex-direction:column;gap:12px;max-width:820px;margin:0 auto;}
.faq-item{background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);overflow:hidden;}
.faq-q{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;cursor:pointer;font-weight:800;font-size:1.02rem;list-style:none;}
.faq-q::-webkit-details-marker{display:none;}
.faq-q .ic{font-size:1.4rem;color:var(--accent);transition:.3s;}
.faq-item[open] .faq-q .ic{transform:rotate(45deg);}
.faq-a{padding:0 24px 22px;color:var(--muted);}

/* contact */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:40px;}
.info-card{background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:36px;}
.info-card h3{margin-bottom:22px;}
.info-row{display:flex;gap:14px;align-items:flex-start;margin-bottom:22px;}
.info-row .ic{width:44px;height:44px;border-radius:13px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex:none;}
.info-row h4{font-size:.92rem;color:var(--muted);font-weight:600;}
.info-row p{font-weight:700;}
.form{background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:36px;display:flex;flex-direction:column;gap:16px;}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field label{display:block;font-size:.88rem;font-weight:700;margin-bottom:6px;color:var(--muted);}
.field input,.field select,.field textarea{width:100%;padding:13px 15px;border-radius:12px;border:1px solid rgba(255,255,255,.12);
  background:var(--bg);color:var(--text);font-family:inherit;font-size:1rem;}
.field textarea{resize:vertical;min-height:110px;}
.field input:focus,.field select,.field textarea:focus{outline:none;border-color:var(--accent);}
.error{color:var(--pink);font-size:.82rem;margin-top:4px;display:none;}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--pink);}
.field.invalid .error{display:block;}
@media(max-width:800px){.contact{grid-template-columns:1fr;}.form .row{grid-template-columns:1fr;}}

/* legal */
.legal{max-width:820px;margin:0 auto;background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:44px;}
.legal h1{font-size:2.2rem;margin-bottom:6px;}
.legal .updated{color:var(--muted);font-size:.9rem;margin-bottom:30px;}
.legal h2{font-size:1.3rem;margin:28px 0 10px;color:var(--accent);}
.legal p,.legal li{color:var(--muted);margin:8px 0;}
.legal ul{padding-left:22px;}
.legal a{color:var(--accent);}

/* footer */
footer{background:var(--surface);border-top:1px solid rgba(255,255,255,.08);padding:60px 0 30px;margin-top:60px;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:30px;margin-bottom:40px;}
.foot-brand p{color:var(--muted);font-size:.92rem;margin-top:12px;max-width:300px;}
.foot-col h4{margin-bottom:14px;font-size:1rem;}
.foot-col ul{list-style:none;display:flex;flex-direction:column;gap:9px;}
.foot-col a{color:var(--muted);text-decoration:none;font-size:.92rem;transition:.2s;}
.foot-col a:hover{color:var(--accent);}
.copy{text-align:center;color:var(--muted);font-size:.84rem;border-top:1px solid rgba(255,255,255,.08);padding-top:26px;}
@media(max-width:760px){.foot-grid{grid-template-columns:1fr 1fr;}}

/* toast */
.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(100px);opacity:0;
  background:var(--ok);color:#052;padding:15px 30px;border-radius:999px;font-weight:800;z-index:80;transition:.4s;box-shadow:0 12px 30px rgba(0,0,0,.3);}
.toast.show{transform:translateX(-50%) translateY(0);opacity:1;}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px);}to{opacity:1;transform:translateY(0);}}
.reveal{opacity:0;}
.reveal.in{animation:fadeUp .6s ease forwards;}