/* ===================== 基本變數 ===================== */
:root{
  --brand:#e87a1e;          /* 主橘 */
  --brand-dark:#c45e0a;     /* 深橘 */
  --brand-soft:#fff3e6;     /* 淡橘背景 */
  --ink:#1f2937;            /* 主文字 */
  --ink-2:#4b5563;          /* 次文字 */
  --muted:#9ca3af;          /* 弱文字 */
  --bg:#ffffff;             /* 白底 */
  --bg-soft:#fafafa;        /* 淺灰底 */
  --bg-dark:#111827;        /* 深底 */
  --line:#e5e7eb;           /* 線條 */
  --radius:14px;
  --radius-sm:8px;
  --shadow-sm:0 4px 14px rgba(0,0,0,.06);
  --shadow:0 10px 30px rgba(0,0,0,.08);
  --shadow-lg:0 20px 50px rgba(0,0,0,.12);
  --container:1200px;
  --header-h:72px;
  --font: "Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
}

/* ===================== Reset ===================== */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
ul{list-style:none;padding:0;margin:0}

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ===================== 動畫 ===================== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s ease,transform .8s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ===================== 導航列 ===================== */
.header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(10px);
  -webkit-backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid transparent;
  transition:all .3s ease;
}
.header.is-scrolled{
  background:rgba(255,255,255,.98);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-sm);
}
.nav-container{
  height:var(--header-h);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{
  width:46px;height:46px;
  border-radius:50%;
  object-fit:cover;
  background:#fff;
}
.brand-name{
  font-size:18px;font-weight:700;letter-spacing:.5px;color:var(--ink);
}

.nav{display:flex;align-items:center;gap:24px}
.nav-list{display:flex;gap:6px}
.nav-link{
  position:relative;
  padding:10px 14px;
  font-size:15px;font-weight:500;color:var(--ink);
  border-radius:8px;
  transition:color .2s ease, background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--brand);
  transform:scaleX(0);transform-origin:left;
  transition:transform .3s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}

.fb-icon{
  width:38px;height:38px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;background:#1877f2;
  transition:transform .2s ease, box-shadow .2s ease;
}
.fb-icon:hover{transform:translateY(-2px);box-shadow:0 6px 14px rgba(24,119,242,.4)}

/* 手機選單按鈕 */
.menu-toggle{display:none;width:42px;height:42px;border-radius:8px;position:relative}
.menu-toggle span{
  display:block;height:2px;width:22px;background:var(--ink);
  margin:5px auto;border-radius:2px;transition:transform .3s,opacity .3s;
}
.menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.is-open span:nth-child(2){opacity:0}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===================== Hero ===================== */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;align-items:center;justify-content:center;
  color:var(--ink);text-align:center;
  overflow:hidden;
  padding-top:var(--header-h);
  background:#fff7ee;
}
.hero-slider{
  position:absolute;inset:0;z-index:0;
}
.hero-slide{
  position:absolute;inset:0;
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
  opacity:0;
  transform:scale(1.08);
  transition:opacity 1.2s ease, transform 7s ease;
}
.hero-slide.is-active{
  opacity:1;
  transform:scale(1);
}
.hero-overlay{
  position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(135deg,rgba(255,255,255,.78) 0%,rgba(255,247,238,.72) 50%,rgba(255,224,194,.66) 100%);
}
.hero-overlay::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 20% 20%,rgba(232,122,30,.10) 1px,transparent 1px),
    radial-gradient(circle at 80% 80%,rgba(232,122,30,.08) 1px,transparent 1px);
  background-size:50px 50px,80px 80px;
  opacity:.6;
}
.hero-inner{position:relative;z-index:2;padding:0 24px}
.hero-title{
  font-size:clamp(36px,6vw,68px);
  font-weight:800;line-height:1.2;margin:0 0 18px;
  letter-spacing:2px;
  color:transparent;
  -webkit-text-stroke:1.2px rgba(31,41,55,.55);
  text-stroke:1.2px rgba(31,41,55,.55);
  background:linear-gradient(90deg,
      rgba(31,41,55,.18) 0%,
      rgba(31,41,55,.06) 50%,
      rgba(31,41,55,.18) 100%);
  -webkit-background-clip:text;
  background-clip:text;
  text-shadow:0 2px 18px rgba(255,255,255,.7);
  animation:heroTitleShine 6s linear infinite;
  background-size:200% 100%;
}
.hero-title span{
  display:inline-block;
  -webkit-text-stroke:0;
  text-stroke:0;
  color:transparent;
  background:linear-gradient(90deg,
      rgba(232,122,30,.55) 0%,
      rgba(196,94,10,.85) 50%,
      rgba(232,122,30,.55) 100%);
  -webkit-background-clip:text;
  background-clip:text;
  background-size:200% 100%;
  animation:heroTitleShine 6s linear infinite;
  letter-spacing:3px;
  font-weight:700;
}
@keyframes heroTitleShine{
  0%{background-position:200% 0}
  100%{background-position:-200% 0}
}
.hero-subtitle{
  font-size:clamp(15px,1.6vw,19px);
  color:var(--ink-2);
  margin:0 0 38px;
  letter-spacing:1px;
}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

.hero-dots{
  position:absolute;left:50%;bottom:96px;transform:translateX(-50%);
  z-index:2;display:flex;gap:10px;
}
.hero-dots button{
  width:36px;height:4px;border-radius:2px;
  background:rgba(31,41,55,.25);
  transition:background .3s ease, width .3s ease;
}
.hero-dots button.is-active{
  background:var(--brand);
  width:54px;
}
.hero-dots button:hover{background:var(--brand-dark)}

.btn{
  display:inline-block;
  padding:14px 30px;
  border-radius:50px;
  font-size:15px;font-weight:600;letter-spacing:1px;
  transition:transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease;
  cursor:pointer;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 22px rgba(232,122,30,.4)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 12px 28px rgba(232,122,30,.5)}
.btn-ghost{background:transparent;color:var(--brand-dark);border:2px solid var(--brand)}
.btn-ghost:hover{background:var(--brand);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(232,122,30,.35)}
.btn-block{width:100%}

.hero-scroll{
  position:absolute;bottom:30px;left:50%;transform:translateX(-50%);
  width:30px;height:48px;border:2px solid rgba(31,41,55,.45);border-radius:20px;
  display:flex;justify-content:center;z-index:2;
}
.hero-scroll span{
  display:block;width:4px;height:8px;background:var(--brand);border-radius:2px;margin-top:8px;
  animation:scrollDot 1.6s infinite;
}
@keyframes scrollDot{
  0%{opacity:1;transform:translateY(0)}
  100%{opacity:0;transform:translateY(16px)}
}

/* ===================== 區塊共用 ===================== */
.section{padding:100px 0;position:relative}
.section-light{background:var(--bg)}
.section-dark{background:linear-gradient(180deg,#fafafa 0%,#fff5ea 100%)}
.section-contact{background:#0f1623;color:#e5e7eb}
.section-contact .section-title,
.section-contact .section-lead{color:#fff}

.section-head{text-align:center;max-width:760px;margin:0 auto 60px}
.section-title{
  font-size:clamp(28px,3.4vw,42px);
  font-weight:800;margin:0 0 14px;letter-spacing:1px;color:var(--ink);
  position:relative;display:inline-block;
  cursor:default;
  padding-top:34px;
}
.section-title::before{
  content:attr(data-en);
  position:absolute;left:50%;top:0;
  transform:translate(-50%,8px);
  font-size:13px;font-weight:700;letter-spacing:3px;
  color:var(--brand);
  opacity:0;
  pointer-events:none;
  transition:opacity .35s ease, transform .35s ease;
  white-space:nowrap;
}
.section-title:hover::before{
  opacity:1;
  transform:translate(-50%,0);
}
.section-title::after{
  content:"";display:block;width:60px;height:3px;background:var(--brand);
  margin:14px auto 0;border-radius:3px;
}
.section-lead{font-size:16px;color:var(--ink-2);margin:0}
.section-contact .section-title::before{color:#ffb678}

/* ===================== About ===================== */
.about-grid{
  display:grid;grid-template-columns:1.1fr 1fr;gap:60px;align-items:center;
}
.about-text p{font-size:16px;color:var(--ink-2);margin:0 0 16px;line-height:1.9}
.about-text strong{
  color:var(--brand-dark);
  font-size:1.5em;
  font-weight:800;
  letter-spacing:1px;
  display:inline-block;
  margin-right:6px;
}
.about-features{margin-top:24px;display:grid;grid-template-columns:1fr 1fr;gap:14px 22px}
.about-features li{
  display:flex;align-items:center;gap:10px;font-size:15px;color:var(--ink);font-weight:500;
}
.about-features .dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 4px rgba(232,122,30,.18);
  flex:none;
}

.about-stats{
  display:grid;grid-template-columns:1fr 1fr;gap:18px;
}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 22px;text-align:center;
  box-shadow:var(--shadow-sm);
  transition:transform .3s ease, box-shadow .3s ease;
}
.stat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.stat-num{
  font-size:42px;font-weight:800;color:var(--brand);letter-spacing:1px;line-height:1;
}
.stat-label{margin-top:8px;color:var(--ink-2);font-size:14px;letter-spacing:1px}

/* ===================== Services ===================== */
.services-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.service-card{
  background:#fff;border-radius:var(--radius);
  padding:36px 26px;
  border:1px solid var(--line);
  text-align:center;
  transition:transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  position:relative;overflow:hidden;
}
.service-card::before{
  content:"";position:absolute;left:0;top:0;height:4px;width:100%;
  background:linear-gradient(90deg,var(--brand),#ffb678);
  transform:scaleX(0);transform-origin:left;transition:transform .4s ease;
}
.service-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:var(--brand-soft)}
.service-card:hover::before{transform:scaleX(1)}
.service-icon{
  width:78px;height:78px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand-soft) 0%,#ffe4cc 100%);
  color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 20px;
  transition:background .3s ease, transform .3s ease;
}
.service-icon svg{width:38px;height:38px}
.service-card:hover .service-icon{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  color:#fff;transform:scale(1.08) rotate(-4deg);
}
.service-card h3{font-size:19px;font-weight:700;margin:0 0 12px;color:var(--ink)}
.service-card p{font-size:14.5px;color:var(--ink-2);line-height:1.8;margin:0}

/* ===================== Cases ===================== */
.cases-cards{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
}
.case-card{
  display:flex;flex-direction:column;
  background:#fff;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--line);
  transition:transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  text-decoration:none;color:inherit;
}
.case-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:var(--brand-soft);
}
.case-cover{
  position:relative;
  aspect-ratio:4 / 3;
  overflow:hidden;
  background:#f3f4f6;
}
.case-cover img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s ease, filter .35s ease;
}
.case-card:hover .case-cover img{
  transform:scale(1.08);
  filter:brightness(.92);
}
.case-cover::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(0,0,0,0) 60%,rgba(0,0,0,.05) 100%);
  pointer-events:none;
}
.case-info{
  padding:20px 22px 22px;
  background:#fff;
}
.case-info h3{
  margin:0 0 6px;
  font-size:18px;font-weight:700;letter-spacing:1px;color:var(--ink);
}
.case-info p{
  margin:0;font-size:13.5px;color:var(--ink-2);letter-spacing:1px;
}

/* ===================== Contact ===================== */
.contact-grid{
  display:grid;grid-template-columns:1fr 1.1fr;gap:50px;
}
.contact-info{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius);padding:36px;
}
.info-list li{
  display:flex;gap:16px;padding:16px 0;border-bottom:1px dashed rgba(255,255,255,.08);
}
.info-list li:last-child{border-bottom:0}
.info-ic{
  width:42px;height:42px;border-radius:50%;
  background:rgba(232,122,30,.18);color:#ffb678;
  display:flex;align-items:center;justify-content:center;flex:none;
}
.info-ic svg{width:20px;height:20px}
.info-list b{display:block;font-size:15px;color:#ffb678;letter-spacing:1px;margin-bottom:4px}
.info-list p{margin:0;color:#4b5563;font-size:15.5px}
.info-list a{color:#4b5563;border-bottom:1px dotted rgba(255,255,255,.4)}
.info-list a:hover{color:#ffb678;border-bottom-color:#ffb678}

.fb-cta{
  margin-top:24px;
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 22px;border-radius:50px;
  background:#1877f2;color:#fff;font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease;
}
.fb-cta:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(24,119,242,.45)}

.contact-form{
  background:#fff;color:var(--ink);
  border-radius:var(--radius);padding:36px;
  box-shadow:var(--shadow-lg);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.contact-form label{display:block;margin-bottom:16px}
.contact-form label > span{
  display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;
}
.contact-form label i{color:var(--brand);font-style:normal;margin-left:4px}
.contact-form input,
.contact-form select,
.contact-form textarea{
  width:100%;padding:12px 14px;border-radius:var(--radius-sm);
  border:1.5px solid var(--line);background:#fff;color:var(--ink);
  font-family:inherit;font-size:15px;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(232,122,30,.15);
}
.contact-form textarea{resize:vertical;min-height:120px}
.form-status{margin:14px 0 0;text-align:center;font-size:14px;min-height:1.2em}
.form-status.is-ok{color:#16a34a}
.form-status.is-err{color:#dc2626}

#submitBtn.is-loading{
  opacity:.75;cursor:not-allowed;
  background:var(--brand-dark) !important;
}
#submitBtn.is-loading::after{
  content:"";display:inline-block;margin-left:8px;
  width:14px;height:14px;border:2px solid rgba(255,255,255,.4);
  border-top-color:#fff;border-radius:50%;
  vertical-align:middle;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===================== Footer ===================== */
.footer{background:#fafafa;color:#4b5563;padding:50px 0 26px;border-top:1px solid #e5e7eb}
.footer-inner{display:grid;gap:26px}
.footer-brand{display:flex;align-items:center;gap:14px}
.footer-logo{
  width:48px;height:48px;border-radius:50%;object-fit:cover;
  background:#fff;border:0px solid var(--brand);
}
.footer-brand h4{margin:0;color:#1f2937;font-size:16px;letter-spacing:1px}
.footer-brand p{margin:4px 0 0;font-size:13px;color:#6b7280}

.footer-meta{
  display:flex;justify-content:space-between;align-items:center;
  padding:18px 0;border-top:1px solid #e5e7eb;border-bottom:1px solid #e5e7eb;
  gap:18px;flex-wrap:wrap;
  font-size:14px;color:#6b7280;
}
.footer-social a{
  width:36px;height:36px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:#1877f2;color:#fff;transition:transform .2s ease;
}
.footer-social a:hover{transform:translateY(-2px)}
.footer-copy{text-align:center;font-size:13px;color:#9ca3af}
.footer-copy p{margin:0}

/* ===================== Lightbox（分類資料夾全部照片一次顯示） ===================== */
.lightbox{
  position:fixed;inset:0;z-index:100;
  background:rgba(10,15,24,.94);
  display:none;
  padding:30px 20px;
  overflow-y:auto;
}
.lightbox.is-open{display:block}
.lb-content{
  max-width:1200px;margin:0 auto;
  padding-top:30px;
}
.lb-title{
  color:#fff;font-size:22px;font-weight:700;letter-spacing:2px;
  text-align:center;margin-bottom:6px;
}
.lb-title::after{
  content:"";display:block;width:60px;height:3px;background:var(--brand);
  margin:14px auto 0;border-radius:3px;
}
.lb-grid{
  margin-top:36px;
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:18px;
}
.lb-grid img{
  width:100%;height:100%;object-fit:cover;
  aspect-ratio:4 / 3;
  border-radius:var(--radius);
  background:#1a1f2b;
  box-shadow:0 12px 36px rgba(0,0,0,.45);
  transition:transform .35s ease, box-shadow .35s ease;
  cursor:zoom-in;
}
.lb-grid img:hover{
  transform:translateY(-4px) scale(1.02);
  box-shadow:0 18px 44px rgba(0,0,0,.6);
}
.lb-close{
  position:fixed;top:18px;right:22px;z-index:2;
  width:48px;height:48px;border-radius:50%;
  background:rgba(255,255,255,.12);color:#fff;font-size:30px;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s ease, transform .2s ease;
}
.lb-close:hover{background:rgba(255,255,255,.25);transform:rotate(90deg)}

/* 單張全螢幕檢視（點縮圖後的放大） */
.lb-zoom{
  position:fixed;inset:0;z-index:110;
  background:rgba(0,0,0,.92);
  display:none;align-items:center;justify-content:center;
  padding:30px;
}
.lb-zoom.is-open{display:flex}
.lb-zoom img{
  max-width:96%;max-height:90vh;object-fit:contain;
  border-radius:6px;box-shadow:0 24px 60px rgba(0,0,0,.7);
}
.lb-zoom-close{
  position:absolute;top:18px;right:22px;
  width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,.12);color:#fff;font-size:28px;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s ease;
}
.lb-zoom-close:hover{background:rgba(255,255,255,.25)}

/* ===================== 回到頂端 ===================== */
.to-top{
  position:fixed;right:22px;bottom:22px;z-index:40;
  width:44px;height:44px;border-radius:50%;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(232,122,30,.45);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s ease,visibility .3s ease,transform .3s ease,background .2s ease;
}
.to-top:hover{background:var(--brand-dark)}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}

/* ===================== RWD - 平板 ===================== */
@media (max-width:992px){
  .section{padding:80px 0}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr;gap:30px}
  .nav{
    position:fixed;top:var(--header-h);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;
    max-height:0;overflow:hidden;
    transition:max-height .4s ease;
    box-shadow:var(--shadow);
  }
  .nav.is-open{max-height:calc(100vh - var(--header-h))}
  .nav-list{flex-direction:column;gap:0;padding:8px 0}
  .nav-link{display:block;padding:14px 24px;border-radius:0;font-size:16px}
  .nav-link::after{display:none}
  .nav-link:hover{background:var(--brand-soft)}
  .fb-icon{margin:14px 24px 22px;align-self:flex-start}
  .menu-toggle{display:block}
}

/* ===================== RWD - 手機 ===================== */
@media (max-width:640px){
  :root{--header-h:64px}
  .container{padding:0 18px}
  .section{padding:64px 0}
  .section-head{margin-bottom:40px}
  .brand-name{font-size:16px}
  .brand-logo{width:40px;height:40px}
  .hero{min-height:88vh}
  .hero-title{letter-spacing:0}
  .hero-actions .btn{padding:12px 24px;font-size:14px}
  .hero-dots{bottom:80px}
  .hero-dots button{width:28px}
  .hero-dots button.is-active{width:42px}

  .about-features{grid-template-columns:1fr}
  .about-stats{grid-template-columns:1fr 1fr;gap:14px}
  .stat-card{padding:24px 16px}
  .stat-num{font-size:34px}

  .services-grid{grid-template-columns:1fr;gap:18px}
  .service-card{padding:28px 22px}

  .cases-cards{grid-template-columns:repeat(2,1fr);gap:18px}
  .case-info{padding:16px 18px 18px}
  .case-info h3{font-size:16px}

  .contact-info,.contact-form{padding:26px}
  .form-row{grid-template-columns:1fr}

  .footer-meta{flex-direction:column;text-align:center}
  .lb-prev{left:10px}.lb-next{right:10px}
  .lb-close{top:14px;right:14px}
}

@media (max-width:420px){
  .cases-cards{grid-template-columns:1fr}
  .about-stats{grid-template-columns:1fr 1fr}
}