@charset "UTF-8";
/* ===================================================================
   元隆精密機械廠 YUAN LUNG × ROUTMAC
   現代精密工業美學 (Modern Precision Industrial)
   單一樣式表 — 純靜態交付，無建置工具、無框架
   =================================================================== */

/* ---------- 1. 設計權杖 ---------- */
:root{
  /* 色彩系統 */
  --slate-900:#20394B;   /* 深藍文字 — 大標題與主要資訊 */
  --slate-800:#304D62;
  --slate-700:#435F70;
  --slate-500:#587083;
  --slate-400:#7D95A6;
  --blue-600:#346F96;    /* 柔和科技藍 — 按鈕、連結與技術標籤 */
  --blue-700:#285C80;
  --blue-50:#EDF5FA;
  --amber-600:#C77D43;   /* 暖橙 — 圖示與重點線條 */
  --amber-700:#AE602B;   /* 白字按鈕維持足夠對比 */
  --orange-600:#B8662E;
  --canvas:#F6F9FB;      /* 畫布底色 */
  --white:#FFFFFF;
  --border:#D9E4EC;      /* 精密線條 */
  --border-strong:#B9CDD9;

  /* 品牌底色與對應文字，獨立於深色標題 */
  --brand-surface:#365D77;
  --brand-panel:#426D88;
  --on-brand:#E3EFF6;
  --on-brand-muted:#E1EDF5;
  --hero-surface:#EAF3FA;

  /* 字體 */
  --font-sans:-apple-system,BlinkMacSystemFont,"Noto Sans TC","PingFang TC",
              "Microsoft JhengHei","Segoe UI",sans-serif;
  --font-mono:Inter,Roboto,"SF Mono",Consolas,"Courier New",monospace;

  /* 版面 */
  --wrap:1200px;
  --nav-h:72px;
  --radius:4px;
  --radius-lg:8px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06);
  --shadow:0 4px 16px rgba(15,23,42,.08);
  --shadow-lg:0 12px 40px rgba(15,23,42,.14);
  --ease:cubic-bezier(.4,0,.2,1);
}

/* ---------- 2. 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 16px)}
body{
  margin:0;background:var(--canvas);color:var(--slate-800);
  font-family:var(--font-sans);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,svg,video{max-width:100%;height:auto;display:block}
a{color:var(--blue-600);text-decoration:none}
a:hover{text-decoration:underline}
button{font:inherit;color:inherit;cursor:pointer}
table{border-collapse:collapse;width:100%}
h1,h2,h3,h4{color:var(--slate-900);line-height:1.3;margin:0 0 .6em;font-weight:600;letter-spacing:-.01em}
h1{font-size:clamp(28px,4vw,40px);font-weight:700}
h2{font-size:clamp(22px,2.8vw,28px)}
h3{font-size:clamp(17px,2vw,20px)}
p{margin:0 0 1em}
:focus-visible{outline:3px solid var(--blue-600);outline-offset:2px;border-radius:2px}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;
                 clip:rect(0 0 0 0);white-space:nowrap;border:0}
.model{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.01em}

/* ---------- 3. 版面骨架 ---------- */
.wrap{width:min(100% - 40px,var(--wrap));margin-inline:auto}
.section{padding:clamp(48px,7vw,88px) 0}
.section--tight{padding:clamp(32px,4vw,52px) 0}
.section--dark{background:var(--brand-surface);color:var(--on-brand)}
.section--dark h2,.section--dark h3{color:#fff}
.section--alt{background:var(--white)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head p{color:var(--slate-500);font-size:17px;margin:0}
.eyebrow{
  display:inline-block;font-family:var(--font-mono);font-size:12px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;color:var(--blue-600);margin-bottom:12px;
}
.section--dark .eyebrow{color:var(--on-brand)}
/* 深色區塊的文字色 —— 下列元件的預設色是為淺底設計的，
   直接放進 .section--dark 會變成深字壓深底。 */
.section--dark .section-head p{color:var(--on-brand-muted)}
.section--dark .feature-list li{color:var(--on-brand)}
.section--dark .feature__num{color:var(--on-brand)}
.section--dark .model{color:var(--on-brand-muted)}
.section--dark .figure figcaption{background:var(--brand-panel);color:var(--on-brand-muted);
                                  border-top-color:rgba(255,255,255,.1)}
.section--dark .figure{background:var(--brand-panel);border-color:rgba(255,255,255,.12)}
.section--dark .timeline{border-left-color:rgba(255,255,255,.18)}
.section--dark .timeline li::before{background:var(--brand-surface)}
.section--dark .timeline p{color:var(--on-brand)}
.section--dark .timeline b{color:var(--on-brand)}
.grid{display:grid;gap:24px}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(min(340px,100%),1fr))}
.grid--3{grid-template-columns:repeat(auto-fill,minmax(min(300px,100%),1fr))}
.grid--4{grid-template-columns:repeat(auto-fill,minmax(min(250px,100%),1fr))}

/* ---------- 4. 按鈕 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border:1px solid transparent;border-radius:var(--radius);
  font-size:15px;font-weight:600;text-decoration:none;white-space:nowrap;
  transition:background .18s var(--ease),border-color .18s var(--ease),
             transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
/* 暖橙按鈕配白字；保留清楚的文字對比。 */
.btn--cta{background:var(--amber-700);color:#fff;box-shadow:0 2px 8px rgba(174,96,43,.20)}
.btn--cta:hover{background:#914D22;box-shadow:0 6px 18px rgba(174,96,43,.28)}
.btn--primary{background:var(--blue-600);color:#fff}
.btn--primary:hover{background:var(--blue-700)}
.btn--ghost{background:transparent;color:var(--slate-900);border-color:var(--border-strong)}
.btn--ghost:hover{background:var(--white);border-color:var(--slate-400)}
.section--dark .btn--ghost{color:#fff;border-color:rgba(255,255,255,.5)}
.hero .btn--ghost{color:var(--blue-700);border-color:var(--border-strong);background:rgba(255,255,255,.55)}
.section--dark .btn--ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.75)}
.hero .btn--ghost:hover{background:var(--white);border-color:var(--blue-600)}
.btn--sm{padding:9px 16px;font-size:14px}
.btn--block{width:100%}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none}

/* ---------- 5. 導覽列 ---------- */
.site-header{
  position:sticky;top:0;z-index:900;background:var(--brand-surface);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav{display:flex;align-items:center;gap:28px;height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex-shrink:0}
.brand:hover{text-decoration:none}
.brand__logo{width:auto;height:40px;flex-shrink:0;display:block}
.footer-brand__logo{width:200px;height:auto;margin-bottom:18px}
.brand__zh{display:block;color:#fff;font-size:16px;font-weight:700;letter-spacing:.06em;line-height:1.2}
.brand__en{display:block;color:var(--on-brand-muted);font-family:var(--font-mono);font-size:10px;
           letter-spacing:.14em;line-height:1.4}
.nav__links{display:flex;align-items:center;gap:4px;margin-left:auto;list-style:none;padding:0;margin-block:0}
.nav__link{
  display:block;padding:10px 14px;border-radius:var(--radius);
  color:var(--on-brand);font-size:15px;font-weight:500;text-decoration:none;
  transition:color .16s,background .16s;
}
.nav__link:hover,.nav__link:focus-visible{color:#fff;background:rgba(255,255,255,.07);text-decoration:none}
.nav__link[aria-current="page"]{color:#fff}
.nav__link[aria-current="page"]::after{
  content:"";display:block;height:2px;margin-top:6px;border-radius:2px;background:var(--amber-600);
}
.nav__cta{margin-left:10px}
.nav__toggle{
  display:none;margin-left:auto;width:44px;height:44px;padding:0;
  background:transparent;border:1px solid rgba(255,255,255,.2);border-radius:var(--radius);
}
.nav__toggle span{display:block;width:20px;height:2px;margin:4px auto;background:#fff;
                  transition:transform .2s var(--ease),opacity .2s}
.nav__toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav__toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav__toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* Mega menu */
.has-mega{position:relative}
.mega{
  position:absolute;top:calc(100% + 10px);left:50%;transform:translate(-50%,8px);
  width:min(92vw,720px);padding:24px;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);
  display:grid;grid-template-columns:repeat(3,1fr);gap:8px;
  opacity:0;visibility:hidden;transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s;
}
.has-mega[data-open="true"] .mega{opacity:1;visibility:visible;transform:translate(-50%,0)}
.mega__item{display:block;padding:14px;border-radius:var(--radius);text-decoration:none;transition:background .16s}
.mega__item:hover{background:var(--canvas);text-decoration:none}
.mega__tier{font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.1em;
            color:var(--blue-600);display:block;margin-bottom:4px}
.mega__name{display:block;color:var(--slate-900);font-size:15px;font-weight:600;margin-bottom:4px}
.mega__desc{display:block;color:var(--slate-500);font-size:13px;line-height:1.5}

/* ---------- 6. Hero ---------- */
.hero{
  position:relative;background:var(--hero-surface);color:var(--slate-800);overflow:hidden;
  padding:clamp(56px,8vw,104px) 0;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(900px 420px at 78% 12%,rgba(146,193,221,.36),transparent 62%),
    radial-gradient(620px 360px at 8% 96%,rgba(233,201,170,.16),transparent 64%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(73,112,138,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(73,112,138,.07) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 78%);
          mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 78%);
}
.hero .wrap{position:relative;z-index:1}
.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,64px);align-items:center}
.hero h1{color:var(--slate-900);margin-bottom:20px;letter-spacing:-.02em}
.hero__lead{font-size:clamp(16px,1.6vw,18px);color:var(--slate-700);max-width:52ch;margin-bottom:28px}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:36px}
.hero__stats{display:flex;flex-wrap:wrap;gap:36px;padding-top:28px;border-top:1px solid var(--border-strong)}
.hero__stat b{display:block;font-family:var(--font-mono);font-size:30px;font-weight:700;color:var(--slate-900);line-height:1.1}
.hero__stat span{font-size:13px;color:var(--slate-500)}
.hero__media{position:relative;border-radius:var(--radius-lg);overflow:hidden;
             background:rgba(255,255,255,.65);box-shadow:0 16px 40px rgba(54,93,119,.12);border:1px solid var(--border-strong)}
.hero__media img{width:100%;aspect-ratio:3/2;object-fit:cover}
.hero__badge{
  position:absolute;left:16px;bottom:16px;display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;background:rgba(54,93,119,.94);backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.16);border-radius:100px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.1em;color:#fff;
}
.hero__badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--amber-600)}

/* ---------- 7. 產品卡片 ---------- */
.card{
  display:flex;flex-direction:column;background:var(--white);
  border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.card:hover{border-color:var(--border-strong);box-shadow:var(--shadow);transform:translateY(-3px)}
.card__media{position:relative;background:var(--canvas);aspect-ratio:3/2;overflow:hidden}
.card__media img{width:100%;height:100%;object-fit:contain;transition:transform .4s var(--ease)}
.card:hover .card__media img{transform:scale(1.04)}
.card__body{display:flex;flex-direction:column;flex:1;padding:20px}
.card__model{font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.06em;
             color:var(--blue-600);margin-bottom:6px}
.card__title{font-size:17px;font-weight:600;color:var(--slate-900);margin:0 0 8px;line-height:1.4}
.card__desc{font-size:14px;color:var(--slate-500);margin:0 0 16px;line-height:1.6}
.card__specs{list-style:none;margin:0 0 18px;padding:0;font-size:13px;color:var(--slate-700)}
.card__specs li{display:flex;justify-content:space-between;gap:12px;padding:7px 0;
                border-bottom:1px dashed var(--border)}
.card__specs li:last-child{border-bottom:0}
.card__specs b{color:var(--slate-500);font-weight:500}
.card__specs span{font-family:var(--font-mono);font-weight:600;color:var(--slate-900);text-align:right}
.card__foot{display:flex;gap:8px;margin-top:auto}
.card__foot .btn{flex:1}

/* 層級標章 */
.tier-tag{
  position:absolute;top:12px;left:12px;z-index:2;
  display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:100px;
  font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
}
.tier-tag--1{background:var(--slate-900);color:#fff}
.tier-tag--2{background:var(--white);color:var(--slate-700);border:1px solid var(--border-strong)}
.tier-tag--3{background:var(--blue-50);color:var(--blue-700);border:1px solid var(--border-strong)}

/* 適用材質浮層標籤 */
.material-tags{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 14px;padding:0;list-style:none}
.material-tags .badge{
  display:inline-block;padding:4px 10px;border-radius:100px;
  background:rgba(15,23,42,.05);border:1px solid var(--border);
  font-size:12px;font-weight:500;color:var(--slate-700);
}
.card__media .material-tags{position:absolute;left:10px;right:10px;bottom:10px;margin:0;z-index:2}
.card__media .material-tags .badge{background:rgba(255,255,255,.88);backdrop-filter:blur(6px)}
/* Tier 2 cards keep the entire machine visible above the material labels. */
.card--tier2 .card__media{aspect-ratio:auto;display:flex;flex-direction:column}
.card--tier2 .card__media .tier-tag{position:static;align-self:flex-start;margin:10px 10px 0}
.card--tier2 .card__media img{width:100%;height:auto;aspect-ratio:3/2;object-fit:contain}
.card--tier2:hover .card__media img{transform:none}
.card--tier2 .card__media .material-tags{position:static;left:auto;right:auto;bottom:auto;margin:0;padding:0 10px 10px;z-index:auto}

/* ---------- 8. Tier 1 詳細頁 ---------- */
.product-detail{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);
                gap:clamp(28px,4vw,56px);align-items:start}
.product-detail>*{min-width:0}
.gallery{position:sticky;top:calc(var(--nav-h) + 20px);min-width:0}
.gallery__stage{
  position:relative;background:var(--canvas);border:1px solid var(--border);
  border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:3/2;cursor:zoom-in;
}
.gallery__stage img{width:100%;height:100%;object-fit:contain;transform-origin:var(--zoom-x,50%) var(--zoom-y,50%);transition:transform .12s ease-out;pointer-events:none}
.gallery__stage[data-zooming="true"]{cursor:zoom-out}
.gallery__stage[data-zooming="true"] img{transform:scale(2)}
.gallery__stage[data-zooming="true"] .gallery__hint{display:none}
.gallery__hint{
  position:absolute;right:12px;bottom:12px;z-index:3;padding:5px 11px;border-radius:100px;
  background:rgba(15,23,42,.78);color:#fff;font-size:11px;letter-spacing:.04em;
}
.gallery__thumbs{display:flex;gap:10px;margin-top:12px;overflow-x:auto;padding-bottom:4px;
                 min-width:0;scrollbar-width:thin}
.gallery__thumb{
  flex:0 0 96px;padding:0;background:var(--canvas);border:2px solid var(--border);
  border-radius:var(--radius);overflow:hidden;aspect-ratio:3/2;transition:border-color .16s;
}
.gallery__thumb img{width:100%;height:100%;object-fit:contain}
.gallery__thumb[aria-current="true"]{border-color:var(--blue-600)}
.gallery__thumb:hover{border-color:var(--slate-400)}

.detail__head{margin-bottom:24px}
.detail__title{margin:10px 0 6px}
.detail__model{font-family:var(--font-mono);font-size:15px;font-weight:600;color:var(--blue-600);letter-spacing:.04em}
.detail__highlight{font-size:16px;color:var(--slate-700);margin-bottom:20px}
.detail__actions{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}

/* 規格表 */
.spec-table{font-size:14px;background:var(--white);border:1px solid var(--border);
            border-radius:var(--radius-lg);overflow:hidden}
.spec-table caption{
  padding:14px 18px;background:var(--slate-900);color:#fff;text-align:left;
  font-size:14px;font-weight:600;letter-spacing:.02em;
}
.spec-table th,.spec-table td{padding:11px 18px;text-align:left;border-bottom:1px solid var(--border)}
.spec-table tbody tr:last-child th,.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table th{width:42%;font-weight:500;color:var(--slate-500);background:#FBFCFD}
.spec-table td{font-family:var(--font-mono);font-weight:600;color:var(--slate-900);font-variant-numeric:tabular-nums}
/* 敘述性欄位（非數值），改回一般字體 */
.spec-table td.plain{font-family:var(--font-sans);font-weight:500}
.spec-table td.muted{font-weight:400;color:var(--slate-500)}
.spec-table--matrix{display:block;overflow-x:auto}
.spec-table--matrix table{min-width:640px}
.spec-table--matrix thead th{background:var(--slate-800);color:#fff;font-weight:600;width:auto}
.spec-table--matrix tbody th{width:auto;white-space:nowrap}
.spec-table--matrix tbody tr:nth-child(even){background:#FBFCFD}

/* 深色區塊裡的規格表 ——
   上面那組配色是為淺底設計的（近黑字 ＋ 白底條紋）。直接放進 .section--dark
   時，只有偶數列拿到淺色底，奇數列會變成深字壓深底而完全看不見。
   這裡整組重新指定，不再靠 inline style 硬蓋。 */
.section--dark .spec-table{background:var(--brand-panel);border-color:rgba(255,255,255,.12)}
.section--dark .spec-table caption{background:var(--brand-surface);color:#fff}
.section--dark .spec-table th,
.section--dark .spec-table td{border-bottom-color:rgba(255,255,255,.1)}
.section--dark .spec-table th{background:transparent;color:var(--on-brand-muted)}
.section--dark .spec-table td{color:#F1F5F9}
.section--dark .spec-table--matrix thead th{background:var(--brand-surface);color:#fff}
.section--dark .spec-table--matrix tbody tr:nth-child(even){background:rgba(255,255,255,.05)}
.section--dark .spec-table--matrix tbody tr:nth-child(even) th{background:transparent}
.section--dark .spec-table--matrix tbody tr:hover{background:rgba(255,255,255,.08)}
/* 表格內的補充說明文字 */
.section--dark .spec-table .muted{color:var(--on-brand-muted)}

/* 特色清單 */
.feature-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.feature-list li{position:relative;padding-left:30px;font-size:15px;color:var(--slate-700)}
.feature-list li::before{content:"";position:absolute;left:0;top:.55em;width:16px;height:2px;background:var(--amber-600)}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(230px,100%),1fr));gap:1px;
              background:var(--border);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden}
.feature{background:var(--white);padding:24px}
.section--dark .feature{background:var(--brand-panel)}
.section--dark .feature-grid{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.08)}
.feature__num{font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--blue-600);
              letter-spacing:.1em;display:block;margin-bottom:10px}
.feature h3{font-size:17px;margin-bottom:8px}
.feature p{font-size:14px;color:var(--slate-500);margin:0;line-height:1.65}
.section--dark .feature p{color:var(--on-brand-muted)}

/* 分頁標籤 */
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--border);margin-bottom:24px;overflow-x:auto}
.tab{
  padding:12px 20px;background:transparent;border:0;border-bottom:2px solid transparent;
  font-size:15px;font-weight:600;color:var(--slate-500);white-space:nowrap;
  transition:color .16s,border-color .16s;
}
.tab:hover{color:var(--slate-900)}
.tab[aria-selected="true"]{color:var(--slate-900);border-bottom-color:var(--amber-600)}
.tabpanel[hidden]{display:none}

/* ---------- 9. YouTube 延遲載入外觀 ---------- */
.yt-facade{
  position:relative;aspect-ratio:16/9;border-radius:var(--radius-lg);overflow:hidden;
  background:var(--slate-900) center/cover no-repeat;border:0;padding:0;width:100%;display:block;
}
.yt-facade::after{content:"";position:absolute;inset:0;background:rgba(15,23,42,.42);transition:background .2s}
.yt-facade:hover::after{background:rgba(15,23,42,.25)}
.yt-facade__play{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:2;
  width:74px;height:52px;border-radius:12px;background:var(--amber-600);
  display:grid;place-items:center;box-shadow:0 8px 28px rgba(0,0,0,.4);
  transition:transform .2s var(--ease),background .2s;
}
.yt-facade:hover .yt-facade__play{transform:translate(-50%,-50%) scale(1.08);background:var(--orange-600)}
.yt-facade__play svg{width:22px;height:22px;fill:#fff}
.yt-facade__label{
  position:absolute;left:16px;bottom:16px;z-index:2;color:#fff;font-size:14px;font-weight:600;
  text-shadow:0 1px 4px rgba(0,0,0,.6);
}
.yt-frame{width:100%;aspect-ratio:16/9;border:0;border-radius:var(--radius-lg);display:block}
a.yt-facade,a.yt-facade:hover{text-decoration:none}

/* 影片卡片：影片專區與 Tier 1「更多實機影片」共用 */
.video-card{margin:0;min-width:0}
.video-card .yt-facade,.video-card .yt-frame{border-radius:var(--radius)}
.video-card .yt-facade__play{width:60px;height:42px;border-radius:10px}
.video-card figcaption{margin-top:10px;font-size:14px;color:var(--slate-500);display:flex;flex-wrap:wrap;gap:4px 10px}
.video-card figcaption b{color:var(--slate-900);font-weight:600}
.video-more{margin-top:40px}
.video-more__head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:8px 24px;margin-bottom:16px}
.video-more__head h3{margin:0}
.video-more__head a{font-size:14px;font-weight:600}
.video-group{padding:48px 0;border-top:1px solid var(--border)}
.video-group:first-child{padding-top:8px;border-top:0}
.video-group__head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px 32px;margin-bottom:24px}
.video-group__head h2{margin:0 0 6px}
.video-group__name{font-size:.6em;font-weight:500;color:var(--slate-500)}
.video-group__note{margin:4px 0 0;max-width:68ch;font-size:15px;color:var(--slate-500)}
.video-group__actions{display:flex;flex-wrap:wrap;gap:8px}
.filter__count{margin-left:6px;color:var(--slate-400);font-size:12px}
a.filter,a.filter:hover{text-decoration:none}

/* ---------- 10. Tier 3 抽屜式彈窗 ---------- */
.vault-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(240px,100%),1fr));gap:16px}
.vault-card{
  display:flex;flex-direction:column;text-align:left;padding:0;background:var(--white);
  border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
  transition:border-color .2s,box-shadow .2s,transform .2s;
}
.vault-card:hover{border-color:var(--blue-600);box-shadow:var(--shadow);transform:translateY(-2px)}
/* 型錄原頁為橫式 A4（900x636），整頁完整呈現才看得出是哪一頁 */
.vault-card__thumb{position:relative;aspect-ratio:900/636;background:#fff;overflow:hidden;
                   border-bottom:1px solid var(--border)}
.vault-card__thumb img{width:100%;height:100%;object-fit:contain;
                       transition:transform .35s var(--ease)}
.vault-card:hover .vault-card__thumb img{transform:scale(1.05)}
.vault-card__page{
  position:absolute;right:8px;top:8px;padding:3px 9px;border-radius:100px;
  background:rgba(15,23,42,.82);color:#fff;font-family:var(--font-mono);font-size:10px;font-weight:600;
}
.vault-card__body{padding:14px}
.vault-card__zh{display:block;font-size:15px;font-weight:600;color:var(--slate-900);margin-bottom:3px}
.vault-card__en{display:block;font-size:12px;color:var(--slate-500);font-family:var(--font-mono)}
/* 卡片標題後面的英文機種名，原本用 slate-400 只有 2.5:1 */
.en{color:var(--slate-500);font-weight:400}
.section--dark .en{color:var(--on-brand-muted)}
.vault-static h3 .en{color:var(--slate-500)}
.vault-card__models{display:block;margin-top:8px;padding-top:8px;border-top:1px dashed var(--border);
                    font-family:var(--font-mono);font-size:11px;color:var(--blue-700);
                    overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* 靜態規格條目（未跑 JS 也能閱讀與檢索） */
.vault-static{padding:28px 0;border-top:1px solid var(--border)}
.vault-static:first-of-type{border-top:0}
.vault-static h3{margin-bottom:6px}
.vault-static__meta{font-family:var(--font-mono);font-size:13px;color:var(--blue-700);margin-bottom:12px}
.vault-static>p{font-size:15px;color:var(--slate-700);line-height:1.7}
.vault-static .spec-table--matrix{margin-top:8px}

/* 站內規格搜尋 */
.vault-search{position:relative;max-width:520px;margin-bottom:14px}
.vault-search input{
  width:100%;padding:13px 16px 13px 42px;font:inherit;font-size:15px;color:var(--slate-900);
  background:var(--white);border:1px solid var(--border-strong);border-radius:100px;
  transition:border-color .16s,box-shadow .16s;
}
.vault-search input:focus{outline:0;border-color:var(--blue-600);box-shadow:0 0 0 3px rgba(52,111,150,.16)}
.vault-search::before{
  content:"";position:absolute;left:16px;top:50%;width:14px;height:14px;margin-top:-9px;
  border:2px solid var(--slate-400);border-radius:50%;
}
.vault-search::after{
  content:"";position:absolute;left:28px;top:50%;width:7px;height:2px;margin-top:2px;
  background:var(--slate-400);transform:rotate(45deg);
}

.drawer-backdrop{
  position:fixed;inset:0;z-index:1000;background:rgba(15,23,42,.6);backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;
}
.drawer-backdrop[data-open="true"]{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:1001;width:min(100%,520px);
  background:var(--white);box-shadow:-16px 0 48px rgba(15,23,42,.24);
  transform:translateX(100%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;
}
.drawer[data-open="true"]{transform:translateX(0)}
.drawer__head{display:flex;align-items:flex-start;gap:12px;padding:22px 24px;border-bottom:1px solid var(--border)}
.drawer__head h2{margin:0;font-size:20px}
.drawer__close{
  margin-left:auto;width:38px;height:38px;flex-shrink:0;padding:0;background:var(--canvas);
  border:1px solid var(--border);border-radius:var(--radius);font-size:18px;color:var(--slate-500);line-height:1;
}
.drawer__close:hover{background:var(--white);color:var(--slate-900);border-color:var(--slate-400)}
.drawer__body{flex:1;overflow-y:auto;padding:24px;-webkit-overflow-scrolling:touch}
.drawer__preview{border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
                 background:var(--canvas);margin-bottom:20px}
.drawer__foot{padding:18px 24px;border-top:1px solid var(--border);background:var(--canvas);display:grid;gap:10px}
.note{
  padding:12px 14px;border-left:3px solid var(--amber-600);background:#FFFBEB;
  font-size:13px;color:#92400E;border-radius:0 var(--radius) var(--radius) 0;
}

/* ---------- 11. 浮動詢價籃 ---------- */
.basket-fab{
  position:fixed;right:20px;bottom:20px;z-index:800;
  display:inline-flex;align-items:center;gap:10px;padding:14px 22px;border:0;
  border-radius:100px;background:var(--amber-700);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 8px 28px rgba(174,96,43,.28);
  transform:translateY(120%);transition:transform .3s var(--ease),background .2s;
}
.basket-fab[data-visible="true"]{transform:translateY(0)}
.basket-fab:hover{background:#914D22}
.basket-fab__count{
  min-width:24px;height:24px;padding:0 7px;border-radius:100px;background:rgba(0,0,0,.24);
  display:grid;place-items:center;font-family:var(--font-mono);font-size:13px;font-weight:700;
}
.basket-list{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:10px}
.basket-item{
  display:flex;align-items:center;gap:12px;padding:12px;background:var(--canvas);
  border:1px solid var(--border);border-radius:var(--radius);
}
.basket-item img{width:64px;height:44px;object-fit:contain;flex-shrink:0;background:var(--white);border-radius:2px}
.basket-item__text{flex:1;min-width:0}
.basket-item__model{display:block;font-family:var(--font-mono);font-size:12px;font-weight:600;color:var(--blue-600)}
.basket-item__name{display:block;font-size:14px;color:var(--slate-900);overflow:hidden;
                   text-overflow:ellipsis;white-space:nowrap}
.basket-item__remove{
  width:30px;height:30px;flex-shrink:0;padding:0;border:1px solid var(--border);border-radius:var(--radius);
  background:var(--white);color:var(--slate-500);font-size:16px;line-height:1;
}
.basket-item__remove:hover{color:#B91C1C;border-color:#FCA5A5;background:#FEF2F2}
.basket-empty{padding:40px 20px;text-align:center;color:var(--slate-500);font-size:15px}
.is-inbasket{background:#ECFDF5 !important;border-color:#6EE7B7 !important;color:#047857 !important}

/* ---------- 12. 表單 ---------- */
.form-grid{display:grid;gap:18px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--slate-900);margin-bottom:7px}
.field .req{color:var(--orange-600);margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;font:inherit;font-size:15px;color:var(--slate-900);
  background:var(--white);border:1px solid var(--border-strong);border-radius:var(--radius);
  transition:border-color .16s,box-shadow .16s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:0;border-color:var(--blue-600);box-shadow:0 0 0 3px rgba(52,111,150,.16);
}
.field textarea{min-height:130px;resize:vertical}
.field small{display:block;margin-top:6px;font-size:13px;color:var(--slate-500)}
.field[data-invalid="true"] input,.field[data-invalid="true"] textarea,
.field[data-invalid="true"] select{border-color:#DC2626;background:#FEF2F2}
.field__error{display:none;margin-top:6px;font-size:13px;color:#B91C1C}
.field[data-invalid="true"] .field__error{display:block}
/* 圖形驗證碼 */
.captcha-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.captcha-img{
  width:168px;height:56px;flex-shrink:0;border:1px solid var(--border-strong);
  border-radius:var(--radius);background:var(--canvas);
}
.captcha-img[data-loading="true"]{opacity:.45}
.captcha-refresh{
  width:44px;height:44px;flex-shrink:0;padding:0;display:grid;place-items:center;
  background:var(--white);border:1px solid var(--border-strong);border-radius:var(--radius);
  color:var(--slate-500);transition:color .16s,border-color .16s,background .16s;
}
.captcha-refresh:hover{color:var(--blue-600);border-color:var(--blue-600);background:var(--blue-50)}
.captcha-refresh svg{width:19px;height:19px}
.captcha-row input{flex:1;min-width:150px;text-transform:uppercase;letter-spacing:.22em;
                   font-family:var(--font-mono);font-weight:600}
.captcha-row input::placeholder{text-transform:none;letter-spacing:normal;
                                font-family:var(--font-sans);font-weight:400}
@media (max-width:420px){
  .captcha-row input{flex:1 1 100%;min-width:0}
}

/* 隱形蜜罐 — 對人類不可見、不進 Tab 順序 */
.hp-field{position:absolute!important;left:-9999px!important;top:auto!important;
          width:1px!important;height:1px!important;overflow:hidden!important}
.form-status{padding:14px 16px;border-radius:var(--radius);font-size:14px;font-weight:500;margin-bottom:18px}
.form-status[data-kind="ok"]{background:#ECFDF5;border:1px solid #6EE7B7;color:#065F46}
.form-status[data-kind="err"]{background:#FEF2F2;border:1px solid #FCA5A5;color:#991B1B}
.form-status[hidden]{display:none}

/* ---------- 13. 聯絡 / 地圖 ---------- */
.contact-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
              gap:clamp(28px,4vw,52px);align-items:start}
.info-list{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.info-list li{display:grid;grid-template-columns:96px 1fr;gap:14px;padding:14px 0;
              border-bottom:1px solid var(--border);font-size:15px}
.info-list .k{color:var(--slate-500);font-size:14px}
.info-list .v{color:var(--slate-900);font-weight:500}
.info-list a{font-family:var(--font-mono);font-weight:600}
.map-frame{border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;background:var(--canvas)}
.map-frame iframe{display:block;width:100%;height:380px;border:0}
.map-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}

/* ---------- 14. 頁尾 ---------- */
.site-footer{background:var(--brand-surface);color:var(--on-brand-muted);padding:56px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
.site-footer h3{color:#fff;font-size:14px;font-weight:600;letter-spacing:.06em;margin-bottom:16px}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.site-footer a{color:var(--on-brand-muted);text-decoration:none}
.site-footer .model{color:var(--on-brand-muted)}
.site-footer a:hover{color:#fff;text-decoration:none}
.footer-brand p{max-width:34ch;line-height:1.7;margin:16px 0}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
               padding-top:22px;border-top:1px solid rgba(255,255,255,.1);font-size:13px}
.footer-bottom .model{color:var(--on-brand-muted)}

/* ---------- 15. 麵包屑 / 雜項 ---------- */
.crumbs{padding:18px 0;font-size:13px;color:var(--slate-500)}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}
.crumbs a{color:var(--slate-500)}
.crumbs a:hover{color:var(--slate-900)}
.crumbs li+li::before{content:"/";margin-right:8px;color:var(--border-strong)}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.filter{
  padding:9px 16px;border:1px solid var(--border-strong);border-radius:100px;background:var(--white);
  font-size:14px;font-weight:500;color:var(--slate-700);transition:all .16s var(--ease);
}
.filter:hover{border-color:var(--slate-400)}
.filter[aria-pressed="true"]{background:var(--slate-900);border-color:var(--slate-900);color:#fff}
.count-note{font-size:14px;color:var(--slate-500);margin-bottom:20px}

.dl-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.dl-item{
  display:flex;align-items:center;gap:14px;padding:16px;background:var(--white);
  border:1px solid var(--border);border-radius:var(--radius-lg);text-decoration:none;
  transition:border-color .18s,box-shadow .18s,transform .18s;
}
.dl-item:hover{border-color:var(--blue-600);box-shadow:var(--shadow-sm);transform:translateX(3px);text-decoration:none}
.dl-item__icon{
  width:42px;height:42px;flex-shrink:0;display:grid;place-items:center;border-radius:var(--radius);
  background:#FEF2F2;color:#B91C1C;font-family:var(--font-mono);font-size:11px;font-weight:700;
}
.dl-item__text{flex:1;min-width:0}
.dl-item__name{display:block;font-size:15px;font-weight:600;color:var(--slate-900)}
.dl-item__meta{display:block;font-family:var(--font-mono);font-size:12px;color:var(--slate-500);margin-top:3px}
.dl-item__go{color:var(--slate-400);font-size:18px;flex-shrink:0}

/* 型錄線上預覽頁：先看內容，再決定要不要下載 */
.pdfv__head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
            gap:16px 24px;margin-bottom:20px}
.pdfv__title{min-width:0}
.pdfv__title h1{margin-bottom:6px}
.pdfv__meta{font-family:var(--font-mono);font-size:13px;color:var(--slate-500);margin:0}
.pdfv__actions{display:flex;flex-wrap:wrap;gap:10px}
.pdfv__hint{font-size:14px;color:var(--slate-500);margin-bottom:12px}
.pdfv__frame{
  display:block;width:100%;height:calc(100vh - var(--nav-h) - 48px);min-height:520px;
  border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--slate-700);
}
/* 手機、平板：PDF.js 閱讀器（assets/js/pdf-reader.js），高度與 iframe 一致 */
.pdfv__reader{height:calc(100vh - var(--nav-h) - 48px);min-height:520px}
.pdfv__loading{
  height:100%;margin:0;display:grid;place-items:center;border-radius:var(--radius-lg);
  background:var(--slate-700);color:#CBD5E1;font-size:14px;
}
.pdfr{height:100%;display:flex;flex-direction:column;border:1px solid var(--border);
      border-radius:var(--radius-lg);overflow:hidden;background:var(--slate-700)}
.pdfr__bar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-shrink:0;
  padding:8px 12px;background:var(--slate-900);color:#CBD5E1;font-family:var(--font-mono);font-size:13px;
}
.pdfr__page{display:flex;align-items:center;gap:6px}
.pdfr__page input{
  width:4em;padding:5px 6px;border:1px solid var(--slate-500);border-radius:var(--radius);
  background:var(--slate-800);color:#fff;font:inherit;text-align:center;-moz-appearance:textfield;
}
.pdfr__page input::-webkit-inner-spin-button,.pdfr__page input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}
.pdfr__zoom{display:flex;align-items:center;gap:4px}
.pdfr__zoom button{
  width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--slate-500);
  border-radius:var(--radius);background:transparent;color:#fff;font-size:18px;line-height:1;
}
.pdfr__zoom button:hover{background:var(--slate-800)}
.pdfr__zoom button:disabled{opacity:.35;cursor:default;background:transparent}
.pdfr__level{min-width:4.2em;text-align:center}
.pdfr__scroll{position:relative;flex:1;overflow:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}
.pdfr__scroll:focus-visible{outline:2px solid var(--blue-600);outline-offset:-2px}
.pdfr__pages{display:grid;gap:12px;padding:12px;width:max-content;min-width:100%}
.pdfr__pg{position:relative;margin:0 auto;background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.35)}
.pdfr__pg canvas{position:absolute;inset:0;width:100%;height:100%}
.pdfr__pg.is-error{display:grid;place-items:center;padding:16px;text-align:center;font-size:14px;color:var(--slate-500)}
.pdfv__fallback{
  display:grid;gap:18px;justify-items:center;text-align:center;padding:28px 20px;
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);
}
.pdfv__fallback img{width:100%;max-width:900px;border:1px solid var(--border);border-radius:var(--radius)}
.pdfv__fallback p{margin:0;color:var(--slate-700);font-size:15px}
.pdfv__fallback-icon{
  width:72px;height:72px;display:grid;place-items:center;border-radius:var(--radius-lg);
  background:#FEF2F2;color:#B91C1C;font-family:var(--font-mono);font-size:16px;font-weight:700;
}

.split{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(300px,100%),1fr));
       gap:clamp(28px,4vw,56px);align-items:center}
.figure{border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;background:var(--canvas);margin:0}
.figure img{width:100%;aspect-ratio:3/2;object-fit:cover}
.figure figcaption{padding:12px 16px;font-size:13px;color:var(--slate-500);background:var(--white);
                   border-top:1px solid var(--border)}
.timeline{list-style:none;margin:0;padding:0 0 0 28px;border-left:2px solid var(--border)}
.timeline li{position:relative;padding:0 0 28px 20px}
.timeline li::before{
  content:"";position:absolute;left:-29px;top:6px;width:10px;height:10px;border-radius:50%;
  background:var(--white);border:2px solid var(--blue-600);
}
.timeline b{display:block;font-family:var(--font-mono);font-size:13px;color:var(--blue-600);
            letter-spacing:.06em;margin-bottom:4px}
.timeline p{margin:0;font-size:15px;color:var(--slate-700)}

/* ---------- 16. RWD ---------- */
@media (max-width:1080px){
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .hero__grid{grid-template-columns:1fr}
  .hero__media{order:-1}
  .product-detail{grid-template-columns:minmax(0,1fr)}
  .gallery{position:static}
  .contact-grid{grid-template-columns:1fr}
}
@media (max-width:820px){
  .nav__toggle{display:block}
  .brand__logo{height:34px}
  .nav__links{
    position:fixed;top:var(--nav-h);left:0;right:0;bottom:0;z-index:890;
    flex-direction:column;align-items:stretch;gap:0;margin:0;padding:16px 20px 40px;
    background:var(--brand-surface);overflow-y:auto;
    transform:translateY(-8px);opacity:0;visibility:hidden;
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
  }
  .nav__links[data-open="true"]{transform:translateY(0);opacity:1;visibility:visible}
  .nav__link{padding:15px 12px;font-size:16px;border-bottom:1px solid rgba(255,255,255,.08)}
  .nav__link[aria-current="page"]::after{display:none}
  .nav__cta{margin:20px 0 0}
  .mega{
    position:static;transform:none;width:auto;padding:8px 0 16px;background:transparent;
    border:0;box-shadow:none;opacity:1;visibility:visible;grid-template-columns:1fr;gap:0;display:none;
  }
  .has-mega[data-open="true"] .mega{display:grid;transform:none}
  .mega__item{padding:12px}
  .mega__item:hover{background:rgba(255,255,255,.06)}
  .mega__name{color:#fff}
  .mega__desc{color:var(--on-brand-muted)}
  .mega__tier{color:var(--on-brand)}
  /* 平板以下讓圖文並排改為單欄 — 兩欄各 350px 對中文內文太窄 */
  .split{grid-template-columns:1fr}
  .grid--2{grid-template-columns:1fr}
}
@media (max-width:600px){
  .pdfv__actions{width:100%}
  .pdfv__actions .btn{flex:1 1 0}
  .pdfv__actions .btn--cta{flex-basis:100%}
  .pdfv__frame,.pdfv__reader{height:75vh;min-height:0}
  .wrap{width:calc(100% - 32px)}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero__stats{gap:24px}
  .hero__stat b{font-size:26px}
  .vault-grid{grid-template-columns:repeat(auto-fill,minmax(min(160px,100%),1fr))}
  .info-list li{grid-template-columns:80px 1fr;gap:10px}
  .basket-fab{right:14px;bottom:14px;padding:12px 18px;font-size:14px}
  .drawer{width:100%}
  .gallery__hint{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;
                       scroll-behavior:auto!important}
  .card:hover{transform:none}
}
@media print{
  .site-header,.site-footer,.basket-fab,.drawer,.drawer-backdrop,.detail__actions{display:none!important}
  body{background:#fff}
}