/* ============================================================
   天元聖火靈氣 · 公開首頁
   深墨底・香檳金・玻璃層次（與 reiki-system 同一套色系）
   ============================================================ */

:root{
  --gold:#c9a86b; --gold-soft:#b3934f; --gold-bright:#e8d6ab;
  --gold-dim:rgba(201,168,107,.30); --gold-faint:rgba(201,168,107,.09);
  --gold-glow:rgba(201,168,107,.15);
  --green:#6fbf9a; --amber:#c98a4b;
  --bg:#0a0b0f; --bg-2:#0d0f14; --panel:#12141a; --panel-2:#171a21;
  --line:rgba(201,168,107,.17); --line-soft:rgba(255,255,255,.06);
  --text:#f3efe7; --text-2:#c4beb2; --text-3:#8d887e;
  --shadow:0 18px 46px rgba(0,0,0,.5); --shadow-sm:0 6px 18px rgba(0,0,0,.28);
  --radius:18px; --radius-sm:12px;
  --serif:"Noto Serif TC","Songti TC","Microsoft JhengHei","PingFang TC",serif;
  --sans:"Microsoft JhengHei","PingFang TC","Noto Sans TC","Helvetica Neue",system-ui,sans-serif;
}
html[data-theme="light"]{
  --gold:#8d6f2a; --gold-soft:#a5852f; --gold-bright:#6b5418;
  --gold-dim:rgba(141,111,42,.32); --gold-faint:rgba(141,111,42,.07);
  --gold-glow:rgba(141,111,42,.12);
  --green:#3a8563; --amber:#96632f;
  --bg:#f6f3ea; --bg-2:#eeeade; --panel:#fffefa; --panel-2:#f9f6ee;
  --line:rgba(141,111,42,.22); --line-soft:rgba(60,50,30,.09);
  --text:#221f19; --text-2:#4e463a; --text-3:#8a8272;
  --shadow:0 14px 36px rgba(90,72,30,.13); --shadow-sm:0 4px 14px rgba(90,72,30,.09);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);
  font-size:16px;line-height:1.75;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
  transition:background .35s ease,color .35s ease;
}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
svg{display:block}
::selection{background:var(--gold-dim);color:var(--text)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px}

.wrap{width:min(1120px,calc(100% - 48px));margin-inline:auto}
.page-glow{
  position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(760px 520px at 78% 8%,var(--gold-glow),transparent 68%),
    radial-gradient(620px 480px at 8% 62%,rgba(111,191,154,.055),transparent 70%);
  opacity:.85;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:blur(18px) saturate(1.3);
  -webkit-backdrop-filter:blur(18px) saturate(1.3);
  border-bottom:1px solid var(--line-soft);
}
.header-inner{display:flex;align-items:center;gap:22px;min-height:76px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:38px;height:38px;color:var(--gold);filter:drop-shadow(0 0 9px var(--gold-glow))}
.brand-mark svg{width:100%;height:100%}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-family:var(--serif);font-size:17px;letter-spacing:.06em;color:var(--gold-bright);font-weight:600}
.brand-text small{font-size:9px;letter-spacing:.24em;color:var(--text-3);margin-top:3px}

.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav a{
  padding:8px 12px;border-radius:9px;font-size:13.5px;color:var(--text-2);
  transition:color .2s,background .2s;white-space:nowrap;
}
.main-nav a:hover,.main-nav a.active{color:var(--gold-bright);background:var(--gold-faint)}

.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.theme-btn{
  width:38px;height:38px;display:grid;place-items:center;border-radius:10px;
  border:1px solid var(--line);background:var(--panel);color:var(--gold);
  transition:border-color .2s,transform .2s;
}
.theme-btn:hover{border-color:var(--gold);transform:translateY(-1px)}
.theme-btn svg{width:19px;height:19px}
.i-sun{display:none}
html[data-theme="light"] .i-sun{display:block}
html[data-theme="light"] .i-moon{display:none}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 20px;border-radius:11px;font-size:14px;font-weight:600;
  border:1px solid transparent;transition:transform .2s,box-shadow .2s,background .2s;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn-gold{
  background:linear-gradient(135deg,var(--gold-bright),var(--gold) 55%,var(--gold-soft));
  color:#17130a;border-color:var(--gold-soft);
  box-shadow:0 6px 20px var(--gold-dim);
}
html[data-theme="light"] .btn-gold{color:#fffdf6}
.btn-gold:hover{box-shadow:0 10px 28px var(--gold-dim)}
.btn-ghost{border-color:var(--line);color:var(--text-2);background:var(--panel)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-bright)}
.btn-lg{padding:14px 28px;font-size:15px;border-radius:13px}
.menu-btn{display:none;width:38px;height:38px;border:1px solid var(--line);border-radius:10px;background:var(--panel);padding:9px}
.menu-btn span{display:block;height:1.5px;background:var(--gold);margin:4px 0;border-radius:2px}

/* ---------- hero ---------- */
.hero{
  position:relative;z-index:1;display:grid;grid-template-columns:1.2fr .8fr;
  gap:44px;align-items:center;padding-top:96px;padding-bottom:88px;
}
.eyebrow{
  margin:0 0 18px;font-size:12px;letter-spacing:.22em;color:var(--gold);
  display:flex;align-items:center;gap:12px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--gold);opacity:.7}
.hero h1{
  margin:0;font-family:var(--serif);font-weight:600;
  font-size:clamp(36px,4.7vw,58px);line-height:1.34;letter-spacing:.03em;
  color:var(--text);
}
.hero h1 em{font-style:normal;color:var(--gold-bright);position:relative}
.hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:1px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
}
.hero-desc{margin:26px 0 0;max-width:560px;color:var(--text-2);font-size:16.5px;line-height:2}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.hero-note{margin:20px 0 0;font-size:12.5px;color:var(--text-3)}

.hero-art{display:grid;place-items:center;position:relative;min-height:400px}
.halo{position:relative;width:min(360px,100%);aspect-ratio:1;display:grid;place-items:center}
.halo::before{
  content:"";position:absolute;inset:-14%;border-radius:50%;
  background:radial-gradient(circle,var(--gold-glow),transparent 62%);filter:blur(24px);
}
.halo-ring{position:absolute;border-radius:50%;border:1px solid var(--gold-dim)}
.halo-ring.r1{inset:2%;border-width:1px;animation:spin 60s linear infinite}
.halo-ring.r1::after{
  content:"";position:absolute;top:-3px;left:50%;width:6px;height:6px;border-radius:50%;
  background:var(--gold-bright);box-shadow:0 0 12px var(--gold);transform:translateX(-50%);
}
.halo-ring.r2{inset:15%;border-style:dashed;border-color:var(--gold-faint);animation:spin 90s linear infinite reverse}
.halo-ring.r3{inset:28%;border-color:var(--gold-dim);box-shadow:inset 0 0 40px var(--gold-faint)}
.halo-core{
  width:34%;aspect-ratio:1;border-radius:50%;
  background:radial-gradient(circle at 38% 34%,var(--gold-bright),var(--gold) 42%,var(--gold-soft) 72%,transparent 92%);
  box-shadow:0 0 60px var(--gold-glow),0 0 120px var(--gold-glow);
  opacity:.9;animation:breathe 7s ease-in-out infinite;
}
.halo-core::after{
  content:"";position:absolute;inset:0;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.34),transparent 58%);
}
.halo-dot{position:absolute;width:5px;height:5px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green)}
.halo-dot.d1{top:12%;right:16%}.halo-dot.d2{bottom:14%;left:18%}.halo-dot.d3{bottom:30%;right:8%;width:3px;height:3px;background:var(--gold)}
.halo-caption{
  position:absolute;bottom:6px;font-size:11px;letter-spacing:.3em;color:var(--text-3);
}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes breathe{0%,100%{transform:scale(.94);opacity:.82}50%{transform:scale(1.06);opacity:1}}

/* ---------- stats ---------- */
.stats-band{
  position:relative;z-index:1;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
  background:var(--bg-2);
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:32px 20px;text-align:center;border-right:1px solid var(--line-soft)}
.stat:last-child{border-right:0}
.stat-num{font-family:var(--serif);font-size:38px;line-height:1;color:var(--gold-bright);font-weight:600}
.stat-unit{font-size:13px;color:var(--gold);margin-left:5px}
.stat-label{display:block;margin-top:10px;font-size:13px;color:var(--text-3);letter-spacing:.08em}

/* ---------- sections ---------- */
.section{position:relative;z-index:1;padding:96px 0}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section-head{max-width:720px;margin-bottom:46px}
.section-head h2{
  margin:0;font-family:var(--serif);font-weight:600;
  font-size:clamp(27px,3.4vw,38px);line-height:1.4;letter-spacing:.03em;
}
.section-desc{margin:18px 0 0;color:var(--text-2);font-size:15.5px;line-height:1.95}

/* about */
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:start}
.about-text p{margin:0 0 18px;color:var(--text-2);line-height:2.05}
.about-text p:first-child{font-size:17px;color:var(--text)}
.about-points{display:grid;gap:12px}
.about-point{
  padding:20px 22px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:linear-gradient(135deg,var(--panel),var(--panel-2));
  box-shadow:var(--shadow-sm);
}
.about-point strong{display:block;font-family:var(--serif);font-size:16px;color:var(--gold-bright);margin-bottom:6px}
.about-point span{font-size:13.5px;color:var(--text-3);line-height:1.8}

/* cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature-card{
  padding:28px 26px;border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(150deg,var(--panel),var(--panel-2));
  box-shadow:var(--shadow-sm);transition:transform .25s,border-color .25s,box-shadow .25s;
  display:flex;flex-direction:column;
}
.feature-card:hover{transform:translateY(-5px);border-color:var(--gold-dim);box-shadow:var(--shadow)}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--gold-dim);background:var(--gold-faint);color:var(--gold);margin-bottom:20px;
}
.card-icon svg{width:23px;height:23px}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.card-top h3{margin:0;font-family:var(--serif);font-size:19px;font-weight:600;color:var(--text)}
.card-tag{
  font-size:11px;padding:3px 9px;border-radius:20px;white-space:nowrap;
  border:1px solid var(--gold-dim);color:var(--gold);background:var(--gold-faint);
}
.feature-card p{margin:0;font-size:14px;color:var(--text-3);line-height:1.9}

/* roadmap */
.roadmap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.roadmap-item{
  position:relative;padding:24px 24px 22px;border:1px dashed var(--line);border-radius:var(--radius-sm);
  background:var(--panel);overflow:hidden;
}
.roadmap-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--gold),transparent);opacity:.6;
}
.roadmap-item .card-icon{margin-bottom:16px;width:38px;height:38px}
.roadmap-item h3{margin:0 0 8px;font-family:var(--serif);font-size:17px;color:var(--text)}
.roadmap-item p{margin:0;font-size:13px;color:var(--text-3);line-height:1.8}
.soon-badge{
  display:inline-block;margin-top:14px;font-size:11px;letter-spacing:.1em;
  color:var(--green);border:1px solid color-mix(in srgb,var(--green) 40%,transparent);
  background:color-mix(in srgb,var(--green) 8%,transparent);
  padding:3px 10px;border-radius:20px;
}
.roadmap-note{margin:24px 0 0;font-size:12.5px;color:var(--text-3)}

/* steps */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{position:relative;padding:30px 26px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel)}
.step-num{
  font-family:var(--serif);font-size:42px;line-height:1;color:var(--gold);
  opacity:.38;margin-bottom:18px;letter-spacing:.04em;
}
.step h3{margin:0 0 10px;font-family:var(--serif);font-size:19px;color:var(--text)}
.step p{margin:0;font-size:14px;color:var(--text-3);line-height:1.9}
.step:not(:last-child)::after{
  content:"→";position:absolute;right:-16px;top:46px;color:var(--gold);opacity:.4;font-size:20px;z-index:2;
}

/* faq */
.faq-list{display:grid;gap:12px;max-width:860px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--panel);overflow:hidden}
.faq-item summary{
  padding:18px 22px;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:15.5px;color:var(--text);transition:background .2s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--gold-faint)}
.faq-item summary::after{content:"＋";color:var(--gold);font-size:18px;flex-shrink:0;transition:transform .2s}
.faq-item[open] summary::after{content:"－"}
.faq-item[open] summary{color:var(--gold-bright)}
.faq-item .faq-a{padding:0 22px 20px;color:var(--text-2);font-size:14.5px;line-height:2}

/* cta */
.cta-band{position:relative;z-index:1;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(120deg,var(--panel),var(--bg-2) 60%,var(--panel));}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding-top:56px;padding-bottom:56px}
.cta-inner h2{margin:0;font-family:var(--serif);font-size:clamp(24px,3vw,32px);font-weight:600}
.cta-inner p{margin:10px 0 0;color:var(--text-3);font-size:14.5px}

/* disclaimer */
.disclaimer{
  position:relative;z-index:1;padding-top:44px;padding-bottom:56px;
  border-left:2px solid var(--gold-dim);padding-left:24px;margin-top:0;
}
.disclaimer h3{margin:0 0 10px;font-size:14px;letter-spacing:.12em;color:var(--gold)}
.disclaimer p{margin:0;font-size:12.8px;line-height:1.95;color:var(--text-3);max-width:900px}

/* footer */
.site-footer{position:relative;z-index:1;border-top:1px solid var(--line-soft);background:var(--bg-2)}
.footer-inner{display:flex;justify-content:space-between;gap:36px;padding-top:48px;padding-bottom:36px;flex-wrap:wrap}
.footer-name{font-family:var(--serif);font-size:19px;color:var(--gold-bright);letter-spacing:.06em}
.footer-brand p{margin:8px 0 0;font-size:13px;color:var(--text-3)}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:flex-start}
.footer-links a{font-size:13.5px;color:var(--text-2);transition:color .2s}
.footer-links a:hover{color:var(--gold-bright)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:20px;padding-bottom:26px;border-top:1px solid var(--line-soft);
  font-size:12px;color:var(--text-3);
}

.noscript{padding:40px 0;color:var(--text-2)}
.noscript a{color:var(--gold-bright);text-decoration:underline}

.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .hero{grid-template-columns:1fr;gap:20px;padding-top:64px;padding-bottom:64px}
  .hero-art{min-height:300px;order:-1;opacity:.75}
  .halo{width:min(280px,72%)}
  .card-grid,.roadmap-grid{grid-template-columns:repeat(2,1fr)}
  .about-grid{grid-template-columns:1fr;gap:32px}
  .main-nav{display:none;position:absolute;left:0;right:0;top:100%;padding:12px 24px 20px;
    background:var(--bg-2);border-bottom:1px solid var(--line);flex-wrap:wrap}
  .main-nav.open{display:flex}
  .menu-btn{display:block}
  .header-cta{display:none}
}
@media (max-width:680px){
  .wrap{width:min(100% - 32px,1120px)}
  .section{padding:68px 0}
  .hero{padding-top:44px;padding-bottom:56px}
  .hero h1{font-size:clamp(32px,8.4vw,44px)}
  .hero-desc{font-size:15px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat{padding:22px 10px;border-bottom:1px solid var(--line-soft)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(3),.stat:nth-child(4){border-bottom:0}
  .stat-num{font-size:30px}
  .card-grid,.roadmap-grid,.steps-grid{grid-template-columns:1fr}
  .step:not(:last-child)::after{content:"↓";right:auto;left:50%;top:auto;bottom:-20px;transform:translateX(-50%)}
  .cta-inner{flex-direction:column;align-items:flex-start;padding-top:44px;padding-bottom:44px}
  .cta-inner .btn{width:100%}
  .footer-inner{flex-direction:column;gap:22px}
  .hero-actions .btn{flex:1 1 100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}