/* 首頁（產品官網）專用。隱私權與條款頁仍用 style.css。
   顏色沿用 App 的風格 C；標題用襯線字，像一封信。 */
:root{
  --paper:#F7F3EC; --paper-2:#EFE8DC; --card:#FFFDF9; --ink:#1D2240; --muted:#5F6378; --line:#E4DCCF;
  --indigo:#3B4FA8; --navy:#1D2240; --amber:#C9893A; --amber-soft:#F3E3CB; --amber-text:#8E5A1C;
  --teal:#2E8B7A; --shadow:0 20px 50px rgba(29,34,64,.12); --shadow-s:0 6px 18px rgba(29,34,64,.08);
  --serif:"Noto Serif TC","Songti TC",serif;
  --sans:-apple-system,"PingFang TC","Noto Sans TC","Microsoft JhengHei",system-ui,sans-serif;
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px;overflow-x:clip}
body{overflow-x:clip}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.8;-webkit-font-smoothing:antialiased}
/* 紙張紋理與右上角的暖光 */
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;opacity:.5;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 .45  0 0 0 0 .38  0 0 0 0 .3  0 0 0 .05 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>")}
img{max-width:100%;display:block}
a{color:var(--indigo)}
.in{max-width:1120px;margin:0 auto;padding:0 24px}
.serif{font-family:var(--serif)}

/* header */
.top{position:sticky;top:0;z-index:20;background:rgba(247,243,236,.86);backdrop-filter:saturate(1.2) blur(10px);-webkit-backdrop-filter:saturate(1.2) blur(10px);border-bottom:1px solid transparent;transition:border-color .2s}
.top .in{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--serif);font-weight:700;font-size:20px;letter-spacing:.04em}
.brand img{width:34px;height:34px;border-radius:9px;box-shadow:var(--shadow-s)}
.top nav{display:flex;align-items:center;gap:26px}
.top nav a{color:var(--muted);text-decoration:none;font-size:15px}
.top nav a:hover{color:var(--ink)}
.pill{display:inline-flex;align-items:center;gap:8px;background:var(--navy);color:#fff;text-decoration:none;border-radius:999px;padding:10px 20px;font-weight:700;font-size:15px;white-space:nowrap}
.pill .dot{width:8px;height:8px;border-radius:50%;background:var(--amber);box-shadow:0 0 0 4px rgba(201,137,58,.25)}

/* hero */
.hero{padding:56px 0 40px;position:relative}
.hero::after{content:"";position:absolute;right:-10%;top:-20%;width:60%;height:120%;background:radial-gradient(closest-side,rgba(201,137,58,.18),transparent);z-index:-1;pointer-events:none}
.hero .in{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--amber-text);font-weight:700;letter-spacing:.18em;font-size:14px;margin:0 0 18px}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--amber)}
h1{font-family:var(--serif);font-weight:700;font-size:clamp(44px,6.6vw,76px);line-height:1.18;letter-spacing:.02em;margin:0 0 22px}
.lead{font-size:clamp(17px,1.9vw,19px);color:var(--muted);margin:0 0 30px;max-width:30em}
.cta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px 18px}
.cta-row .pill{padding:14px 26px;font-size:16px}
.note{color:var(--muted);font-size:15px}
.trust{display:flex;flex-wrap:wrap;gap:8px 22px;margin:28px 0 0;padding:0;list-style:none;color:var(--muted);font-size:15px}
.trust li{display:flex;align-items:center;gap:8px}
.trust svg{width:18px;height:18px;color:var(--teal);flex:none}
.stage{position:relative;padding:0 0 40px 60px}
.stage .art{border-radius:32px;overflow:hidden;box-shadow:var(--shadow);background:#fff}
.stage .art img{width:100%;height:auto}
.phone{border-radius:28px;overflow:hidden;background:#fff;box-shadow:0 24px 50px rgba(29,34,64,.22);border:6px solid #fff}
.phone img{width:100%;height:auto}
.stage .phone{position:absolute;left:0;bottom:0;width:36%;transform:rotate(-4deg)}

/* section titles */
section{padding:88px 0}
.kicker{color:var(--amber-text);font-weight:700;letter-spacing:.18em;font-size:14px;margin:0 0 12px}
h2{font-family:var(--serif);font-weight:700;font-size:clamp(30px,4vw,44px);line-height:1.3;margin:0 0 18px;letter-spacing:.02em;text-wrap:balance}
.center{text-align:center}
.intro{color:var(--muted);max-width:34em;margin:0 auto 56px}

/* three features */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center;margin:0 0 96px}
.feature:last-child{margin-bottom:0}
.feature.flip .visual{order:2}
.visual{position:relative;padding:0 40px 40px 0}
.visual .art{border-radius:32px;overflow:hidden;box-shadow:var(--shadow);aspect-ratio:1/1;background:#fff}
.visual .art img{width:100%;height:100%;object-fit:cover}
.visual .phone{position:absolute;right:0;bottom:0;width:38%;transform:rotate(3deg)}
.feature.flip .visual{padding:0 0 40px 40px}
.feature.flip .visual .phone{right:auto;left:0;transform:rotate(-3deg)}
.num{font-family:var(--serif);font-size:64px;line-height:1;color:var(--amber-soft);font-weight:700;margin:0 0 6px;-webkit-text-stroke:1px var(--amber);color:transparent}
.tag{display:inline-block;color:#fff;font-weight:700;font-size:14px;border-radius:999px;padding:4px 14px;margin:0 0 14px;letter-spacing:.05em}
.t-write{background:linear-gradient(135deg,#3B4FA8,#25306B)}
.t-day{background:linear-gradient(135deg,#2E8B7A,#1F5F54)}
.t-gone{background:linear-gradient(135deg,#C9893A,#A2651F)}
h3{font-family:var(--serif);font-weight:700;font-size:clamp(24px,2.8vw,32px);line-height:1.35;margin:0 0 16px}
.feature p{color:var(--muted);margin:0 0 14px}
.aside{border-left:3px solid var(--amber);padding:2px 0 2px 16px;font-size:15.5px;color:var(--muted)}

/* handover */
.handover{padding-top:0}
.sheet{background:var(--card);border-radius:36px;box-shadow:var(--shadow);display:grid;grid-template-columns:1.05fr 1fr;overflow:hidden}
.sheet .art img{width:100%;height:100%;object-fit:cover;min-height:100%}
.sheet .body{padding:56px 52px}
.sheet h2{font-size:clamp(28px,3.4vw,38px)}
.q{font-family:var(--serif);font-size:clamp(20px,2.2vw,24px);color:var(--indigo);margin:0 0 22px;line-height:1.5}
.chips{list-style:none;padding:0;margin:0 0 22px;display:grid;gap:10px}
.chips li{display:flex;gap:12px;align-items:flex-start;background:var(--paper);border-radius:14px;padding:12px 16px;font-size:16px;line-height:1.6}
.chips li::before{content:"";flex:none;width:8px;height:8px;margin-top:9px;border-radius:50%;background:var(--amber)}
.sheet .end{color:var(--muted);margin:0}

/* promise band */
.band{background:radial-gradient(120% 140% at 85% 110%,rgba(201,137,58,.35),transparent 55%),linear-gradient(160deg,#25306B,#1D2240 60%);color:#EEF0F8;padding:96px 0;margin:0}
.band .kicker{color:#E8B977}
.band h2{color:#fff;font-size:clamp(30px,4.4vw,50px);max-width:16em;margin:0 auto 52px}
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.three .c{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:24px;padding:28px 26px}
.three svg{width:30px;height:30px;color:#E8B977;margin-bottom:14px}
.three b{display:block;font-family:var(--serif);font-size:21px;margin-bottom:8px;color:#fff}
.three p{margin:0;color:#C9CDE0;font-size:16px;line-height:1.7}

/* data */
.data .in{display:grid;grid-template-columns:1.3fr .7fr;gap:64px;align-items:center}
.ledger{list-style:none;margin:28px 0 18px;padding:0;background:var(--card);border-radius:24px;box-shadow:var(--shadow-s);overflow:hidden}
.ledger li{display:grid;grid-template-columns:40px 9.5em 1fr;gap:14px;align-items:start;padding:18px 22px;border-bottom:1px solid var(--line)}
.ledger li:last-child{border-bottom:0}
.ledger svg{width:24px;height:24px;color:var(--indigo);margin-top:3px}
.ledger b{font-weight:700}
.ledger span{color:var(--muted)}
.data .phone{max-width:280px;justify-self:center;transform:rotate(2deg)}
.small{font-size:15px;color:var(--muted)}

/* price */
.price{padding-top:0}
.price .box{background:var(--card);border-radius:32px;box-shadow:var(--shadow-s);display:grid;grid-template-columns:1fr 1.4fr;align-items:center;gap:40px;padding:48px 52px}
.big{font-family:var(--serif);font-size:clamp(44px,6vw,64px);font-weight:700;line-height:1;color:var(--ink)}
.big small{display:block;font-family:var(--sans);font-size:16px;font-weight:600;color:var(--muted);margin-top:12px;letter-spacing:.02em}
.price p{margin:0 0 10px;color:var(--muted)}

/* faq */
.faq .grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 20px;margin-top:40px}
.faq details{background:var(--card);border-radius:20px;padding:6px 24px;box-shadow:var(--shadow-s);align-self:start}
.faq summary{cursor:pointer;list-style:none;font-weight:700;padding:16px 28px 16px 0;position:relative;line-height:1.55}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:2px;top:24px;width:10px;height:10px;border-right:2px solid var(--amber);border-bottom:2px solid var(--amber);transform:rotate(45deg);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(-135deg);top:28px}
.faq details p{color:var(--muted);margin:0 0 16px}

/* closing */
.closing{padding:0 0 96px}
.closing .frame{position:relative;border-radius:36px;overflow:hidden;box-shadow:var(--shadow);min-height:440px;display:flex;align-items:center}
.closing .frame img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:right center}
.closing .frame::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(247,243,236,.96) 0,rgba(247,243,236,.9) 32%,rgba(247,243,236,0) 62%);z-index:1}
.closing .copy{position:relative;z-index:2;padding:56px;max-width:520px}
.closing h2{font-size:clamp(32px,4.4vw,52px)}
.closing p{color:var(--muted);margin:0 0 26px}

footer{border-top:1px solid var(--line);padding:32px 0 48px;color:var(--muted);font-size:14px}
footer .in{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px 24px}
footer p{margin:0}
footer a{color:var(--muted)}
.disclaim{flex-basis:100%;font-size:13px;opacity:.85}

/* reveal on scroll (只有支援的瀏覽器才動) */
@media (prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
  .reveal.on{opacity:1;transform:none}
}

/* tablet / phone */
@media (max-width:900px){
  .top nav a:not(.pill){display:none}
  .hero .in,.feature,.data .in,.sheet,.price .box{grid-template-columns:1fr}
  .hero{padding-top:28px}
  .hero .in{gap:36px}
  .stage{padding:0 0 32px 44px}
  .feature{gap:28px;margin-bottom:72px}
  .feature.flip .visual{order:0}
  .visual,.feature.flip .visual{padding:0 28px 28px 0}
  .feature.flip .visual .phone{left:auto;right:0;transform:rotate(3deg)}
  .sheet .body{padding:32px 26px}
  .sheet .art{max-height:300px;overflow:hidden}
  .three{grid-template-columns:1fr}
  .data .phone{max-width:240px}
  .price .box{padding:32px 26px;gap:16px}
  .faq .grid{grid-template-columns:1fr}
  section{padding:64px 0}
  .band{padding:72px 0}
  .closing .frame{min-height:0;flex-direction:column;align-items:stretch}
  .closing .frame img{position:relative;height:240px}
  .closing .frame::before{display:none}
  .closing .copy{padding:28px 26px 32px;max-width:none;background:var(--card)}
}
@media (max-width:480px){
  .in{padding:0 16px}
  .ledger li{grid-template-columns:32px 1fr;padding:16px}
  .ledger li span{grid-column:2}
  .num{font-size:52px}
  .pill{padding:9px 16px;font-size:14px}
}