/* ===== 巴風特團隊 BPT 官網 — Apple 風格淺色設計系統 ===== */
:root{
  /* surfaces */
  --bg:#ffffff;
  --bg-alt:#f5f5f7;          /* Apple 標誌性淺灰 */
  --card:#ffffff;
  --card-alt:#fbfbfd;
  /* text */
  --text:#1d1d1f;            /* Apple near-black */
  --text-2:#6e6e73;          /* secondary */
  --text-3:#86868b;          /* tertiary */
  /* lines */
  --border:#d2d2d7;
  --border-soft:#e8e8ed;
  /* accent */
  --accent:#0071e3;          /* Apple blue */
  --accent-hover:#0077ed;
  --accent-soft:#e8f1fd;
  --gold:#b8860b;            /* 品牌暖色，極少量使用 */
  /* brand */
  --line:#06c755;
  --discord:#5865f2;
  /* shape */
  --radius:18px;
  --radius-lg:24px;
  --radius-pill:980px;
  --maxw:1024px;
  --shadow-sm:0 2px 8px rgba(0,0,0,.04);
  --shadow:0 8px 30px rgba(0,0,0,.08);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Helvetica Neue","PingFang TC","Noto Sans TC","Microsoft JhengHei",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.muted{color:var(--text-2)}
.center{text-align:center}

/* ===== Header (frosted) ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.72);
  backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--border-soft);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:52px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600}
.brand:hover{text-decoration:none}
.brand img{width:30px;height:30px;border-radius:8px}
.brand b{font-size:1rem;color:var(--text);letter-spacing:-.01em}
.brand span{display:block;font-size:.62rem;color:var(--text-3);font-weight:600;letter-spacing:.12em}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a:not(.btn){color:var(--text-2);font-weight:400;font-size:.86rem;letter-spacing:-.01em;transition:color .2s}
.nav-links a:not(.btn):hover{color:var(--text);text-decoration:none}
.nav-toggle{display:none}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border-radius:var(--radius-pill);
  font-weight:500;font-size:1rem;letter-spacing:-.01em;
  border:1px solid transparent;cursor:pointer;transition:all .25s;white-space:nowrap;
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover)}
.btn-secondary{background:transparent;color:var(--accent);border-color:transparent}
.btn-secondary:hover{text-decoration:underline}
.btn-soft{background:var(--bg-alt);color:var(--text)}
.btn-soft:hover{background:#ececef}
.btn-line{background:var(--line);color:#fff}
.btn-line:hover{filter:brightness(1.05)}
.btn-discord{background:var(--discord);color:#fff}
.btn-discord:hover{filter:brightness(1.06)}
.btn-sm{padding:7px 16px;font-size:.86rem}
.linkarrow{color:var(--accent);font-weight:400;font-size:1.02rem}
.linkarrow:hover{text-decoration:underline}

/* ===== Hero ===== */
.hero{padding:90px 0 70px;text-align:center}
.badge{
  display:inline-block;padding:6px 14px;border-radius:var(--radius-pill);
  background:var(--bg-alt);color:var(--text-2);
  font-size:.8rem;font-weight:500;letter-spacing:.01em;margin-bottom:22px;
}
.hero h1{
  font-size:clamp(2.6rem,7vw,4.5rem);line-height:1.05;font-weight:700;
  letter-spacing:-.02em;color:var(--text);
}
.hero h1 .accent{color:var(--accent)}
.hero p.lead{
  margin:22px auto 34px;font-size:clamp(1.15rem,2.2vw,1.45rem);
  color:var(--text-2);max-width:640px;font-weight:400;letter-spacing:-.01em;
}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;align-items:center}
.hero-art{margin-top:54px;display:flex;justify-content:center}
.hero-art img{
  width:min(220px,62%);height:auto;aspect-ratio:1/1;object-fit:contain;border-radius:30px;
  box-shadow:var(--shadow);background:var(--bg-alt);padding:22px;
}

/* ===== Sections ===== */
section{padding:88px 0}
.section-alt{background:var(--bg-alt)}
.section-head{text-align:center;max-width:680px;margin:0 auto 56px}
.eyebrow{color:var(--accent);font-weight:600;font-size:.9rem;letter-spacing:0}
.section-head h2{
  font-size:clamp(1.9rem,4vw,3rem);font-weight:700;letter-spacing:-.02em;
  margin:8px 0 14px;line-height:1.1;
}
.section-head p{color:var(--text-2);font-size:1.15rem;font-weight:400}

/* ===== Cards grid ===== */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{
  background:var(--card);border:1px solid var(--border-soft);
  border-radius:var(--radius-lg);padding:30px;transition:transform .25s,box-shadow .25s;
}
.section-alt .card{background:#fff}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card .ico{font-size:2rem;margin-bottom:16px;line-height:1}
.card h3{font-size:1.3rem;font-weight:600;margin-bottom:8px;letter-spacing:-.01em}
.card p{color:var(--text-2);font-size:1rem}
.card.highlight{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}

/* product feature card */
.product{
  display:grid;grid-template-columns:auto 1fr auto;gap:26px;align-items:center;
  text-decoration:none;
}
.product:hover{text-decoration:none}
.product .logo{width:80px;height:80px;border-radius:20px;background:var(--bg-alt);padding:8px}
.product h3{font-size:1.5rem;color:var(--text)}
.product .tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.tag{font-size:.8rem;font-weight:500;padding:5px 12px;border-radius:var(--radius-pill);background:var(--bg-alt);color:var(--text-2)}
.soon{opacity:.7}

/* ===== Pricing ===== */
.pricing{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;max-width:740px;margin:0 auto}
.price-card{position:relative;text-align:center;padding:40px 30px}
.price-card.featured{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.price-card .plan{font-weight:600;font-size:1.05rem;color:var(--text-2)}
.price-card .amt{font-size:3rem;font-weight:700;letter-spacing:-.02em;margin:10px 0 4px}
.price-card .amt small{font-size:1rem;font-weight:500;color:var(--text-3)}
.price-card .note{color:var(--text-2);font-size:.95rem}
.ribbon{position:absolute;top:18px;right:18px;font-size:.74rem;font-weight:600;padding:4px 12px;border-radius:var(--radius-pill);background:var(--accent);color:#fff}
.trial{text-align:center;margin-top:28px;font-size:1.05rem;color:var(--text-2)}
.trial b{color:var(--text)}

/* ===== Steps ===== */
.steps{display:grid;gap:14px;counter-reset:step}
.step{
  display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;
  background:var(--card);border:1px solid var(--border-soft);border-radius:var(--radius);padding:22px 24px;
}
.section-alt .step{background:#fff}
.step .num{
  counter-increment:step;width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;font-weight:600;font-size:.95rem;
  background:var(--accent);color:#fff;
}
.step .num::before{content:counter(step)}
.step h4{font-size:1.1rem;font-weight:600;margin-bottom:4px;letter-spacing:-.01em}
.step p{color:var(--text-2);font-size:.98rem}
code.inline,.step code{
  background:var(--bg-alt);border:1px solid var(--border-soft);border-radius:6px;
  padding:2px 7px;font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:.86em;color:var(--text);
}
.section-alt code.inline,.section-alt .step code{background:#fff}

/* ===== Callout (payment) ===== */
.callout{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:28px 30px;display:grid;gap:6px;text-align:center;
}
.callout .lbl{color:var(--text-2);font-size:.95rem}
.callout .acct{font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:1.5rem;font-weight:600;color:var(--text);letter-spacing:.04em}

/* ===== Command table ===== */
.cmd-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--border-soft);border-radius:var(--radius);overflow:hidden}
.cmd-table th,.cmd-table td{text-align:left;padding:14px 18px;border-bottom:1px solid var(--border-soft)}
.cmd-table th{background:var(--bg-alt);color:var(--text-2);font-size:.8rem;font-weight:600;letter-spacing:.02em;text-transform:uppercase}
.cmd-table tr:last-child td{border-bottom:none}
.cmd-table td:first-child{white-space:nowrap}
.cmd-table code{background:var(--bg-alt);border:1px solid var(--border-soft);border-radius:6px;padding:3px 9px;font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:.85rem;color:var(--text)}
.cmd-table td:last-child{color:var(--text-2);font-size:.95rem}

/* ===== FAQ ===== */
.faq{max-width:760px;margin:0 auto;display:grid;gap:0}
.faq details{border-bottom:1px solid var(--border-soft);padding:20px 4px}
.faq summary{font-size:1.12rem;font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;letter-spacing:-.01em}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--text-3);font-weight:400;font-size:1.5rem;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{color:var(--text-2);margin-top:12px;font-size:1.02rem;line-height:1.6}

/* ===== CTA ===== */
.cta{text-align:center;padding:96px 0}
.cta h2{font-size:clamp(1.9rem,4vw,2.8rem);font-weight:700;letter-spacing:-.02em;margin-bottom:14px}
.cta p{color:var(--text-2);font-size:1.15rem;margin-bottom:30px}
.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ===== Footer ===== */
.site-footer{border-top:1px solid var(--border-soft);background:var(--bg-alt);padding:46px 0;font-size:.86rem}
.footer-grid{display:flex;justify-content:space-between;gap:34px;flex-wrap:wrap}
.foot-links{display:flex;gap:46px;flex-wrap:wrap}
.foot-col h5{font-size:.82rem;color:var(--text);margin-bottom:12px;font-weight:600}
.foot-col a{display:block;color:var(--text-2);padding:4px 0}
.foot-col a:hover{color:var(--text)}
.copyright{margin-top:32px;color:var(--text-3);font-size:.82rem}

/* ===== Responsive ===== */
@media(max-width:820px){
  section{padding:64px 0}
  .grid-3,.grid-2,.pricing{grid-template-columns:1fr}
  .product{grid-template-columns:1fr;text-align:center;justify-items:center}
  .nav-links{
    display:none;position:absolute;top:52px;left:0;right:0;flex-direction:column;
    background:rgba(255,255,255,.96);backdrop-filter:blur(20px);
    border-bottom:1px solid var(--border-soft);padding:18px 22px;gap:18px;align-items:flex-start;
  }
  .nav-links.open{display:flex}
  .nav-toggle{display:block;background:none;border:none;color:var(--text);font-size:1.4rem;cursor:pointer;width:40px;height:38px}
}