/* ── Reset & Base ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Helvetica Neue',Arial,'Noto Sans TC','PingFang TC',sans-serif;background:#f7f6f4;color:#1c1917}

/* ── Keyframes ── */
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes scrollLine{0%{transform:translateY(-100%)}100%{transform:translateY(300%)}}
@keyframes slideDown{from{max-height:0;opacity:0}to{max-height:800px;opacity:1}}

/* ══════════════════════════════════════════
   NAV
══════════════════════════════════════════ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 28px;
  transition:background 0.3s,backdrop-filter 0.3s;
}
.nav.scrolled{background:rgba(18,17,15,0.92);backdrop-filter:blur(12px)}
.nav-logo{font-size:13px;letter-spacing:.2em;color:#fff;font-weight:400;text-transform:uppercase;text-decoration:none}
.nav-links{display:flex;gap:24px;list-style:none}
.nav-links a{font-size:11px;letter-spacing:.12em;color:rgba(255,255,255,.6);text-decoration:none;text-transform:uppercase;transition:color .2s}
.nav-links a:hover{color:#fff}
.nav-wa{
  display:inline-flex;align-items:center;gap:6px;
  font-size:11px;letter-spacing:.1em;
  color:#1c1917;background:#fff;
  padding:8px 16px;text-decoration:none;
  transition:background .2s;
}
.nav-wa:hover{background:#f5f5f4}
@media(max-width:640px){.nav-links,.nav-wa{display:none}}

/* ══════════════════════════════════════════
   HERO
══════════════════════════════════════════ */
.hero{
  position:relative;min-height:100vh;
  display:flex;align-items:flex-end;overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background:linear-gradient(135deg,#2a2620 0%,#3d3530 25%,#4a4038 50%,#353028 75%,#1e1b16 100%);
}
.hero-bg::before{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(ellipse 70% 55% at 65% 38%,rgba(130,108,82,.28) 0%,transparent 70%),
    radial-gradient(ellipse 45% 75% at 18% 72%,rgba(55,45,35,.45) 0%,transparent 60%);
}
.hero-bg::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(to top,rgba(18,17,15,.93) 0%,rgba(18,17,15,.32) 48%,rgba(18,17,15,.04) 100%);
}
.hero-img-hint{
  position:absolute;top:42%;left:50%;transform:translate(-50%,-50%);
  text-align:center;color:rgba(255,255,255,.1);font-size:12px;
  letter-spacing:.14em;text-transform:uppercase;pointer-events:none;
}
.hero-img-hint span{display:block;font-size:40px;opacity:.12;margin-bottom:10px}

.hero-content{
  position:relative;z-index:10;width:100%;
  max-width:900px;margin:0 auto;
  padding:0 28px 88px;
}

/* 牌照徽章 */
.hero-badge{
  display:inline-flex;align-items:center;gap:6px;
  border:1px solid rgba(255,255,255,.28);
  color:rgba(255,255,255,.78);
  font-size:10px;letter-spacing:.18em;text-transform:uppercase;
  padding:7px 14px;margin-bottom:24px;
  opacity:0;animation:fadeUp .5s ease .1s forwards;
}
.hero-badge svg{width:10px;height:10px;fill:currentColor;flex-shrink:0}

/* H1 */
.hero-h1{
  color:#fff;font-weight:300;
  line-height:1.1;letter-spacing:-.01em;
  font-size:clamp(2.5rem,8vw,5rem);
  margin-bottom:24px;
}
.hero-h1 .line{display:block;opacity:0;animation:fadeUp .7s ease forwards}
.hero-h1 .l1{animation-delay:.2s}
.hero-h1 .l2{animation-delay:.3s}
.hero-h1 .l3{color:#d6d3d1;animation-delay:.4s}

/* 副標題 */
.hero-sub{
  color:#d6d3d1;font-size:clamp(.9rem,2.2vw,1.05rem);
  font-weight:300;line-height:1.75;max-width:500px;
  margin-bottom:40px;
  opacity:0;animation:fadeUp .6s ease .5s forwards;
}

/* CTA */
.hero-ctas{
  display:flex;flex-wrap:wrap;gap:12px;margin-bottom:52px;
  opacity:0;animation:fadeUp .5s ease .65s forwards;
}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:15px 36px;background:#fff;color:#1c1917;
  font-size:13px;letter-spacing:.12em;font-weight:500;
  text-decoration:none;border:none;cursor:pointer;
  transition:background .2s;
}
.btn-primary:hover{background:#f5f5f4}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:15px 36px;background:transparent;color:#fff;
  font-size:13px;letter-spacing:.12em;font-weight:300;
  text-decoration:none;border:1px solid rgba(255,255,255,.35);
  transition:border-color .2s,background .2s;
}
.btn-secondary:hover{border-color:rgba(255,255,255,.8);background:rgba(255,255,255,.05)}
.btn-secondary svg,.btn-primary svg{width:15px;height:15px;flex-shrink:0}

/* Trust Bar */
.trust-bar{
  display:flex;flex-wrap:wrap;gap:28px 40px;
  padding-top:28px;border-top:1px solid rgba(255,255,255,.13);
  opacity:0;animation:fadeIn .5s ease .85s forwards;
}
.trust-item{display:flex;flex-direction:column}
.trust-value{color:#fff;font-size:1.5rem;font-weight:300;letter-spacing:-.02em;line-height:1}
.trust-label{color:#a8a29e;font-size:10px;letter-spacing:.14em;margin-top:5px;text-transform:uppercase}

/* Scroll indicator */
.scroll-ind{
  position:absolute;bottom:28px;right:24px;z-index:10;
  display:flex;flex-direction:column;align-items:center;gap:6px;
  opacity:0;animation:fadeIn .5s ease 1.1s forwards;
}
.scroll-label{
  font-size:9px;color:#a8a29e;letter-spacing:.2em;
  text-transform:uppercase;writing-mode:vertical-rl;margin-bottom:6px;
}
.scroll-track{width:1px;height:40px;background:rgba(255,255,255,.18);position:relative;overflow:hidden}
.scroll-thumb{
  position:absolute;top:0;left:0;width:100%;height:50%;
  background:rgba(255,255,255,.55);
  animation:scrollLine 1.5s ease-in-out infinite;
}

/* ══════════════════════════════════════════
   SECTION COMMON
══════════════════════════════════════════ */
.section{padding:88px 28px}
.section-inner{max-width:960px;margin:0 auto}
.section-eyebrow{font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:#a8a29e;margin-bottom:12px}
.section-title{font-size:clamp(1.8rem,4vw,2.4rem);font-weight:300;color:#1c1917;letter-spacing:-.01em;margin-bottom:16px}
.section-desc{font-size:.875rem;color:#78716c;line-height:1.75;max-width:560px}

/* ══════════════════════════════════════════
   PORTFOLIO
══════════════════════════════════════════ */
#portfolio{background:#f7f6f4}
.portfolio-filters{display:flex;flex-wrap:wrap;gap:8px;margin:28px 0 40px}
.filter-btn{
  display:flex;align-items:center;gap:6px;
  padding:9px 16px;font-size:11px;letter-spacing:.06em;
  background:#fff;color:#78716c;border:1px solid #e7e5e4;
  cursor:pointer;transition:all .2s;
}
.filter-btn:hover{border-color:#a8a29e;color:#44403c}
.filter-btn.active{background:#1c1917;color:#fff;border-color:#1c1917}
.filter-count{font-size:9px;opacity:.6}

.portfolio-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:16px;margin-bottom:48px;
}
.portfolio-card{cursor:pointer;display:block}
.portfolio-img-wrap{
  position:relative;overflow:hidden;background:#e7e5e4;
  aspect-ratio:4/3;
}
.portfolio-img-wrap img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s ease;
}
.portfolio-card:hover .portfolio-img-wrap img{transform:scale(1.05)}
.ba-toggle{
  position:absolute;bottom:10px;left:10px;
  display:flex;border-radius:20px;overflow:hidden;
  border:1px solid rgba(255,255,255,.3);backdrop-filter:blur(4px);
}
.ba-btn{
  padding:5px 12px;font-size:9px;letter-spacing:.05em;
  background:rgba(0,0,0,.35);color:rgba(255,255,255,.75);
  border:none;cursor:pointer;transition:all .15s;
}
.ba-btn.active{background:#fff;color:#1c1917}

.portfolio-caption{padding:14px 2px 0}
.portfolio-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}
.portfolio-tag{
  font-size:9px;letter-spacing:.08em;text-transform:uppercase;
  color:#a8a29e;border:1px solid #e7e5e4;padding:2px 8px;
}
.portfolio-title{font-size:1rem;font-weight:300;color:#1c1917;margin-bottom:4px}
.portfolio-meta{font-size:.7rem;color:#a8a29e;margin-bottom:6px}
.portfolio-meta .dot{margin:0 6px;color:#d6d3d1}
.portfolio-highlight{font-size:.75rem;color:#78716c;line-height:1.6}

.portfolio-more{text-align:center;margin-top:8px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.825rem;color:#57534e;text-decoration:none;
  border-bottom:1px solid #d6d3d1;padding-bottom:2px;
  transition:color .2s,border-color .2s;
}
.link-arrow:hover{color:#1c1917;border-color:#1c1917}
.link-arrow svg{width:13px;height:13px}

/* ══════════════════════════════════════════
   SERVICES
══════════════════════════════════════════ */
#services{background:#fff}

.badge-bar{
  display:flex;align-items:flex-start;gap:12px;
  padding:14px 16px;background:#fafaf9;
  border:1px solid #e7e5e4;margin:28px 0 44px;
}
.badge-bar svg{width:18px;height:18px;flex-shrink:0;color:#57534e;margin-top:1px}
.badge-bar p{font-size:.8rem;color:#57534e;line-height:1.6}
.badge-bar strong{color:#1c1917}

.services-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:1px;background:#e7e5e4;
  margin-bottom:48px;
}
.svc-card{
  background:#fff;padding:32px;
  display:flex;flex-direction:column;gap:14px;
  transition:background .2s;
}
.svc-card:hover{background:#fafaf9}
.svc-icon{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  background:#f5f5f4;border-radius:8px;
  flex-shrink:0;
}
.svc-title{font-size:1.05rem;font-weight:300;color:#1c1917;letter-spacing:-.01em}
.svc-desc{font-size:.825rem;color:#78716c;line-height:1.7;flex:1}
.svc-details{display:flex;flex-direction:column;gap:6px;border-top:1px solid #f5f5f4;padding-top:14px;margin-top:4px}
.svc-detail{display:flex;align-items:flex-start;gap:8px;font-size:.75rem;color:#a8a29e}
.svc-detail::before{content:'—';color:#d6d3d1;flex-shrink:0}

.cta-center{text-align:center}
.cta-note{font-size:.825rem;color:#78716c;margin-bottom:20px}
.btn-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 36px;background:#1c1917;color:#fff;
  font-size:12px;letter-spacing:.12em;text-decoration:none;
  transition:background .2s;
}
.btn-dark:hover{background:#44403c}

/* ══════════════════════════════════════════
   FAQ
══════════════════════════════════════════ */
#faq{background:#fafaf9}

.faq-header{margin-bottom:48px}
.faq-wa-link{color:#57534e;text-decoration:underline;text-underline-offset:3px}
.faq-wa-link:hover{color:#1c1917}

.faq-category{margin-bottom:36px}
.faq-cat-label{
  font-size:10px;letter-spacing:.18em;text-transform:uppercase;
  color:#d6d3d1;margin-bottom:14px;
}
.faq-list{border-top:1px solid #e7e5e4}
.faq-item{border-bottom:1px solid #e7e5e4}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;
  padding:18px 0;text-align:left;gap:16px;
  background:none;border:none;cursor:pointer;
}
.faq-q-text{font-size:.875rem;font-weight:300;color:#44403c;line-height:1.5;transition:color .2s}
.faq-item.open .faq-q-text,.faq-q:hover .faq-q-text{color:#1c1917}
.faq-icon{
  flex-shrink:0;width:18px;height:18px;margin-top:2px;
  color:#a8a29e;transition:transform .25s;
}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .35s ease,opacity .3s ease,padding .3s ease;
  opacity:0;font-size:.825rem;color:#78716c;line-height:1.8;
}
.faq-item.open .faq-a{max-height:600px;opacity:1;padding-bottom:20px}

.faq-cta-box{
  margin-top:44px;padding:32px;background:#fff;
  border:1px solid #e7e5e4;text-align:center;
}
.faq-cta-box p{font-size:.825rem;color:#78716c;line-height:1.7;margin-bottom:20px}

/* ══════════════════════════════════════════
   CONTACT
══════════════════════════════════════════ */
#contact{background:#1c1917;padding:88px 28px}
.contact-inner{max-width:960px;margin:0 auto}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
@media(max-width:640px){.contact-grid{grid-template-columns:1fr;gap:40px}}

.contact-eyebrow{font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:#78716c;margin-bottom:16px}
.contact-title{font-size:clamp(1.8rem,4vw,2.4rem);font-weight:300;color:#fff;letter-spacing:-.01em;margin-bottom:20px}
.contact-desc{font-size:.875rem;color:#a8a29e;line-height:1.75;margin-bottom:36px}

.contact-methods{display:flex;flex-direction:column;gap:20px}
.contact-method{display:flex;flex-direction:column;gap:4px}
.contact-method-label{font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:#57534e}
.contact-method-value{font-size:1rem;font-weight:300;color:#fff}
.contact-method-value a{color:#fff;text-decoration:none}
.contact-method-value a:hover{color:#d6d3d1}
.contact-method-note{font-size:.75rem;color:#78716c}

.contact-info{display:flex;flex-direction:column;gap:28px;padding-top:8px}
.contact-info-item{display:flex;flex-direction:column;gap:4px}
.contact-info-label{font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:#57534e}
.contact-info-value{font-size:.875rem;font-weight:300;color:#a8a29e;line-height:1.6}

.wa-big{
  display:inline-flex;align-items:center;gap:10px;
  padding:16px 32px;background:#fff;color:#1c1917;
  font-size:13px;letter-spacing:.12em;font-weight:500;
  text-decoration:none;margin-top:28px;
  transition:background .2s;
}
.wa-big:hover{background:#f5f5f4}
.wa-big svg{width:16px;height:16px;flex-shrink:0}

/* ══════════════════════════════════════════
   FOOTER
══════════════════════════════════════════ */
footer{
  background:#141210;padding:28px;
  display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
}
.footer-brand{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:#57534e}
.footer-reg{font-size:.7rem;color:#44403c;letter-spacing:.06em}
.footer-copy{font-size:.7rem;color:#44403c}

/* ══════════════════════════════════════════
   PREVIEW BADGE
══════════════════════════════════════════ */
.preview-badge{
  position:fixed;bottom:20px;left:20px;z-index:999;
  background:rgba(0,0,0,.8);border:1px solid rgba(255,255,255,.12);
  padding:10px 14px;backdrop-filter:blur(8px);
  font-size:10px;color:rgba(255,255,255,.5);
  letter-spacing:.08em;
}
.preview-badge strong{color:rgba(255,255,255,.8);display:block;margin-bottom:2px}

/* RWD */
/* ══ 語言切換 ══ */
.lang-switcher{display:flex;gap:2px;margin-right:12px}
.lang-btn{
  background:none;border:1px solid rgba(255,255,255,.25);
  color:rgba(255,255,255,.55);
  font-size:10px;letter-spacing:.06em;
  padding:5px 9px;cursor:pointer;
  transition:all .2s;font-family:inherit;
}
.lang-btn:hover{border-color:rgba(255,255,255,.6);color:#fff}
.lang-btn.active{
  background:#fff;color:#1c1917;
  border-color:#fff;font-weight:500;
}
@media(max-width:640px){.lang-switcher{display:none}}

/* ══ 語言切換後 html lang 屬性對應字體 ══ */
:lang(ja){font-family:'Helvetica Neue',Arial,'Hiragino Kaku Gothic Pro','Yu Gothic',sans-serif}
:lang(en){font-family:'Helvetica Neue',Arial,sans-serif}

@media(max-width:480px){
  .hero-content{padding-bottom:72px}
  .trust-bar{gap:20px 28px}
  .scroll-ind{display:none}
  .section{padding:64px 20px}
}
@media(max-width:700px){
  #aboutGrid{grid-template-columns:1fr !important;gap:28px !important}
}