/* ==========================================================================
   元喬交通器材 — 共用設計系統
   ========================================================================== */

:root{
  --paper:#ffffff;
  --mist:#f2f6fb;
  --mist-2:#e9eff7;
  --ink:#16202e;
  --body:#53647c;
  --dim:#8a98ab;
  --navy:#123a63;
  --navy-d:#0c2a4a;
  --navy-l:#2b5a8c;
  --red:#d81e26;
  --red-d:#b0161d;
  --red-soft:rgba(216,30,38,.08);
  --gold:#e8a33d;
  --green:#06C755;
  --line:#dfe7f0;
  --line-2:#c9d6e5;
  --sans:"Noto Sans TC","PingFang TC","Microsoft JhengHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --ease:cubic-bezier(.16,1,.3,1);
  --shadow:0 4px 24px -8px rgba(18,58,99,.14);
  --shadow-l:0 18px 48px -16px rgba(18,58,99,.28);
  --nav-h:70px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--paper);color:var(--body);font-family:var(--sans);
  line-height:1.8;font-size:16px;overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select{font:inherit;color:inherit}
.wrap{width:min(1200px,100% - 48px);margin-inline:auto}
.wrap-n{width:min(940px,100% - 48px);margin-inline:auto}
@media(max-width:640px){ .wrap,.wrap-n{width:min(1200px,100% - 32px)} }

/* ---------- 動效 ---------- */
.rv{opacity:0;transform:translateY(24px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv-d1{transition-delay:.07s}.rv-d2{transition-delay:.14s}.rv-d3{transition-delay:.21s}.rv-d4{transition-delay:.28s}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .rv{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- 頂端條 ---------- */
.topbar{background:var(--navy-d);color:#c3d6ea;font-size:13px;padding:8px 0}
.tbrow{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center}
.tbrow b{color:#fff;font-weight:500}
@media(max-width:760px){ .tbrow .hide-sm{display:none} }

/* ---------- 導覽列 ---------- */
nav.site{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.95);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);padding:14px 0;
  transition:padding .35s var(--ease),box-shadow .35s var(--ease);
}
nav.site.stuck{padding:8px 0;box-shadow:0 4px 22px -12px rgba(18,58,99,.35)}
.nrow{display:flex;align-items:center;justify-content:space-between;gap:18px}
.logo{display:flex;align-items:center;gap:11px;flex:none}
.logo .glyph{
  width:42px;height:42px;border-radius:11px;display:grid;place-items:center;flex:none;
  background:linear-gradient(148deg,var(--red),#f0484f);color:#fff;font-weight:900;font-size:21px;
  box-shadow:0 6px 18px -6px rgba(216,30,38,.6);transition:transform .45s var(--ease);
}
.logo:hover .glyph{transform:rotate(-7deg) scale(1.06)}
.logo b{font-size:17.5px;font-weight:900;color:var(--ink);display:block;line-height:1.2}
.logo small{font-size:11px;color:var(--dim);display:block}
.nlinks{display:flex;gap:26px;font-size:15px;font-weight:500;color:var(--ink)}
.nlinks a{position:relative;padding:6px 0;transition:color .3s;white-space:nowrap}
.nlinks a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;background:var(--red);
  transform:scaleX(0);transform-origin:right;transition:transform .4s var(--ease);
}
.nlinks a:hover{color:var(--red)}
.nlinks a:hover::after{transform:scaleX(1);transform-origin:left}
.nlinks a.on{color:var(--red)}
.nlinks a.on::after{transform:scaleX(1)}
.nacts{display:flex;gap:8px;align-items:center;flex:none}
.burger{
  display:none;width:42px;height:42px;border:1px solid var(--line-2);border-radius:10px;
  background:#fff;cursor:pointer;place-items:center;
}
.burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative;transition:background .2s}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);transition:transform .3s var(--ease)
}
.burger span::before{top:-6px}.burger span::after{top:6px}
.burger.open span{background:transparent}
.burger.open span::before{transform:translateY(6px) rotate(45deg)}
.burger.open span::after{transform:translateY(-6px) rotate(-45deg)}
@media(max-width:1040px){
  .nlinks{
    position:fixed;inset:var(--nav-h) 0 auto 0;flex-direction:column;gap:0;background:#fff;
    border-bottom:1px solid var(--line);padding:8px 0;box-shadow:var(--shadow-l);
    max-height:0;overflow:hidden;transition:max-height .45s var(--ease);
  }
  .nlinks.open{max-height:520px}
  .nlinks a{padding:15px 24px;font-size:16px;border-bottom:1px solid var(--line)}
  .nlinks a::after{display:none}
  .nlinks a:last-child{border-bottom:0}
  .burger{display:grid}
}
@media(max-width:560px){ .btn-line span,.btn-tel span{display:none} }

/* ---------- 按鈕 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:15px 28px;
  border-radius:10px;font-size:16px;font-weight:700;border:0;cursor:pointer;
  transition:all .32s var(--ease);text-align:center;
}
.btn-primary{background:var(--red);color:#fff;box-shadow:0 8px 24px -10px rgba(216,30,38,.7)}
.btn-primary:hover{background:var(--red-d);transform:translateY(-3px);box-shadow:0 16px 34px -12px rgba(216,30,38,.8)}
.btn-ghost{background:#fff;color:var(--navy);border:1px solid var(--line-2);box-shadow:var(--shadow)}
.btn-ghost:hover{border-color:var(--navy);transform:translateY(-3px);box-shadow:var(--shadow-l)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-d);transform:translateY(-3px)}
.btn-sm{padding:11px 20px;font-size:14.5px;border-radius:8px}
.btn-line{
  display:inline-flex;align-items:center;gap:7px;background:var(--green);color:#fff;
  font-size:14px;font-weight:700;padding:10px 17px;border-radius:8px;white-space:nowrap;
  transition:all .3s var(--ease);
}
.btn-line:hover{background:#05b34c;transform:translateY(-2px);box-shadow:0 10px 22px -8px rgba(6,199,85,.65)}
.btn-tel{
  display:inline-flex;align-items:center;gap:7px;background:var(--red);color:#fff;
  font-size:14px;font-weight:700;padding:10px 18px;border-radius:8px;white-space:nowrap;
  transition:all .3s var(--ease);
}
.btn-tel:hover{background:var(--red-d);transform:translateY(-2px);box-shadow:0 10px 22px -8px rgba(216,30,38,.6)}
.arrow{transition:transform .32s var(--ease)}
.btn:hover .arrow,a:hover>.arrow{transform:translateX(4px)}

/* ---------- 頁首橫幅（內頁） ---------- */
.phead{
  position:relative;padding:64px 0 58px;overflow:hidden;isolation:isolate;
  background:linear-gradient(150deg,var(--navy) 0%,var(--navy-d) 100%);color:#d6e4f2;
}
.phead::before{
  content:"";position:absolute;width:520px;height:520px;border-radius:50%;top:-260px;right:-140px;
  background:radial-gradient(circle,rgba(216,30,38,.28),transparent 68%);filter:blur(50px);z-index:-1;
}
.phead h1{font-size:clamp(28px,4.4vw,44px);font-weight:900;color:#fff;line-height:1.24;letter-spacing:-.02em}
.phead p{margin-top:14px;font-size:16.5px;color:#a8c4de;max-width:52ch}
.crumb{font-size:13.5px;color:#8fb0d0;margin-bottom:16px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.crumb a:hover{color:#fff}
.crumb i{font-style:normal;opacity:.5}

/* ---------- 區塊 ---------- */
section{padding:88px 0;position:relative}
@media(max-width:640px){ section{padding:62px 0} }
.alt{background:var(--mist);border-block:1px solid var(--line)}
.shead{max-width:660px;margin-bottom:46px}
.shead.mid{margin-inline:auto;text-align:center}
.kicker{font-size:14px;font-weight:700;color:var(--red);margin-bottom:13px;display:flex;align-items:center;gap:10px}
.shead.mid .kicker{justify-content:center}
.kicker::before{content:"";width:22px;height:2px;background:var(--red);border-radius:1px}
.shead.mid .kicker::after{content:"";width:22px;height:2px;background:var(--red);border-radius:1px}
h2{font-size:clamp(25px,3.8vw,38px);line-height:1.3;font-weight:900;color:var(--ink);letter-spacing:-.015em}
h3{color:var(--ink)}
.shead p{margin-top:15px;font-size:16.5px;line-height:1.9}

/* ---------- 卡片 ---------- */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(285px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(215px,1fr))}
.card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:30px 28px;box-shadow:var(--shadow);overflow:hidden;
  transition:transform .45s var(--ease),box-shadow .45s var(--ease),border-color .45s;
}
.card::after{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--red),var(--gold));
  transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease);
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-l);border-color:var(--line-2)}
.card:hover::after{transform:scaleX(1)}
.card h3{font-size:20px;font-weight:900;margin-bottom:6px}
.card .en{font-size:12px;letter-spacing:.16em;color:var(--red);font-weight:700;margin-bottom:14px}
.card p{font-size:14.8px;line-height:1.85}
.cmark{
  width:52px;height:52px;border-radius:13px;display:grid;place-items:center;margin-bottom:18px;
  background:var(--mist);border:1px solid var(--line);font-size:18px;font-weight:900;color:var(--navy);
  transition:transform .45s var(--ease),background .45s,color .45s;
}
.card:hover .cmark{transform:scale(1.07) rotate(-6deg);background:var(--red);color:#fff;border-color:var(--red)}
.tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px}
.tag{font-size:12.5px;padding:5px 12px;border-radius:6px;background:var(--mist);color:var(--navy);font-weight:500}

/* ---------- 提示框 ---------- */
.note{
  border-radius:12px;padding:20px 24px;border:1px solid rgba(216,30,38,.24);
  background:var(--red-soft);
}
.note b{display:block;font-size:15.5px;color:var(--ink);margin-bottom:5px;font-weight:700}
.note p{font-size:14.5px;line-height:1.85}
.note.info{border-color:var(--line-2);background:var(--mist)}

/* ---------- 表單 / 下拉 ---------- */
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:700;color:var(--ink);margin-bottom:8px}
.field label .step{
  display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;
  background:var(--red);color:#fff;font-size:12px;margin-right:8px;vertical-align:middle;
}
select,input[type=text]{
  width:100%;padding:14px 16px;border:1px solid var(--line-2);border-radius:10px;background:#fff;
  font-size:16px;color:var(--ink);transition:border-color .3s,box-shadow .3s;appearance:none;
}
select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2353647c' stroke-width='2.5'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:18px;padding-right:44px;
}
select:focus,input:focus{outline:0;border-color:var(--red);box-shadow:0 0 0 3px var(--red-soft)}
select:disabled{background-color:var(--mist);color:var(--dim);cursor:not-allowed}

/* ---------- 頁尾 ---------- */
footer.site{background:#0a1f37;color:#7f9ab5;padding:52px 0 32px;font-size:14px}
.fgrid{display:grid;gap:36px;grid-template-columns:1.4fr 1fr 1fr;margin-bottom:34px}
@media(max-width:820px){ .fgrid{grid-template-columns:1fr 1fr;gap:28px} }
@media(max-width:520px){ .fgrid{grid-template-columns:1fr} }
footer.site h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:14px}
footer.site ul{list-style:none;display:flex;flex-direction:column;gap:9px}
footer.site a{transition:color .3s}
footer.site a:hover{color:#fff}
footer.site .fbrand b{color:#fff;font-size:17px;font-weight:900;display:block;margin-bottom:10px}
footer.site .fbrand p{font-size:13.5px;line-height:1.85;max-width:34ch}
.fbot{border-top:1px solid rgba(255,255,255,.1);padding-top:22px;font-size:13px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

/* ---------- 浮動快捷（手機） ---------- */
.fab{
  position:fixed;right:16px;bottom:16px;z-index:70;display:none;flex-direction:column;gap:10px;
}
.fab a{
  width:52px;height:52px;border-radius:50%;display:grid;place-items:center;font-size:22px;
  box-shadow:0 8px 22px -6px rgba(0,0,0,.4);color:#fff;
}
.fab .l{background:var(--green)}
.fab .t{background:var(--red)}
@media(max-width:768px){ .fab{display:flex} }