:root{
  /* Design System Edition 01 — 色彩 */
  --bg:#f9f8f5;            /* paper 紙白 主背景 */
  --panel:#e9e6df;         /* greige 灰米 次面板 */
  --ink:#48453b;           /* ink 暖墨褐 主文字 */
  --soft:rgba(72,69,59,.72);  /* 內文 */
  --muted:rgba(72,69,59,.55); /* 次要/註記 */
  --line:rgba(72,69,59,.14);  /* 分隔線/邊框 */
  --accent:#6e9197;        /* sage-deep 霧青:連結/標籤/強調(務必克制) */
  --sage:#7ea1a7;          /* sage 霧青:大面積色塊 */
  --sage-darker:#5d7e83;   /* 霧青 hover */
  --serif:"Newsreader","Noto Serif TC",Georgia,serif;
  --sans:"Archivo","Noto Sans TC",system-ui,sans-serif;
  --wrap:1240px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-weight:300;line-height:1.8;-webkit-font-smoothing:antialiased}
::selection{background:var(--sage);color:var(--bg)}
img{display:block;width:100%;height:auto}
a{color:inherit;text-decoration:none}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  padding:18px 40px;background:rgba(250,249,246,.86);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.brand img{height:30px;width:auto}
.links{display:flex;gap:34px}
.links a{font-size:14px;letter-spacing:.16em;color:var(--soft);transition:color .25s}
.links a:hover{color:var(--ink)}

/* ---------- hero ---------- */
.hero{position:relative;height:86vh;min-height:520px;background-size:cover;background-position:center;display:flex;align-items:center;justify-content:center;text-align:center;color:#fff}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(30,26,22,.28),rgba(30,26,22,.42))}
.hero-inner{position:relative;z-index:2}
.hero-kicker{font-size:14px;letter-spacing:.42em;margin-bottom:26px;opacity:.92;font-weight:300}
.hero h1{font-family:var(--serif);font-weight:400;font-size:clamp(38px,6vw,76px);line-height:1.28;letter-spacing:.04em}
.hero-sub{margin-top:26px;font-size:16px;letter-spacing:.32em;opacity:.92}

/* ---------- intro ---------- */
.intro{max-width:760px;margin:0 auto;padding:96px 32px;text-align:center}
.intro p{font-family:var(--serif);font-size:clamp(17px,2.1vw,21px);line-height:2.2;color:var(--soft);font-weight:300}

/* ---------- section head ---------- */
.sec-head{text-align:center;margin-bottom:54px}
.sec-en{display:block;font-size:12px;letter-spacing:.42em;color:var(--muted);margin-bottom:14px}
.sec-head h2{font-family:var(--serif);font-weight:400;font-size:30px;letter-spacing:.14em}

/* ---------- works grid ---------- */
.works{max-width:var(--wrap);margin:0 auto;padding:24px 40px 120px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px 18px}
.card{display:block;group:card}
.card figure{overflow:hidden;background:var(--panel);aspect-ratio:4/3}
.card img{height:100%;object-fit:cover;transition:transform .9s cubic-bezier(.2,.7,.2,1)}
.card:hover img{transform:scale(1.05)}
.card figcaption{padding:15px 4px 2px;text-align:center}
.card .firm{display:block;font-size:11px;letter-spacing:.22em;color:var(--accent);margin-bottom:4px;text-transform:uppercase;line-height:1.4}
.card .proj{font-family:var(--serif);font-size:17px;color:var(--ink);letter-spacing:.04em;line-height:1.5}

/* ---------- work detail ---------- */
.work{padding-bottom:120px}
.w-head{max-width:720px;margin:0 auto;padding:84px 32px 60px;text-align:center}
.back{display:inline-block;font-size:13px;letter-spacing:.16em;color:var(--muted);transition:color .25s}
.back:hover{color:var(--ink)}
.w-firm{margin:34px 0 14px;font-size:12px;letter-spacing:.26em;color:var(--accent);text-transform:uppercase}
.w-head h1{font-family:var(--serif);font-weight:400;font-size:clamp(28px,4vw,42px);letter-spacing:.06em;line-height:1.4}
.w-desc{margin-top:26px;font-size:15.5px;line-height:2.1;color:var(--soft)}
/* 桌機:masonry 磚牆式縮圖(直幅橫幅各自保留原比例、不裁切;欄寬呈現,直幅不暴衝);點開看大圖 */
.w-gallery{max-width:1180px;margin:0 auto;padding:0 24px;column-count:3;column-gap:10px}
.shot{padding:0;border:0;margin:0 0 10px;background:var(--panel);cursor:zoom-in;overflow:hidden;display:block;width:100%;break-inside:avoid;-webkit-column-break-inside:avoid}
.shot img{width:100%;height:auto;display:block;transition:transform .7s cubic-bezier(.2,.7,.2,1)}
.shot:hover img{transform:scale(1.06)}
.w-foot{text-align:center;margin-top:64px}

/* lightbox 放大檢視(滑軌式,觸控跟手) */
.lb{position:fixed;inset:0;background:rgba(20,17,14,.985);display:none;z-index:100}
.lb.open{display:block}
.lb-viewport{position:absolute;inset:0;overflow:hidden;touch-action:pan-y}
.lb-track{display:flex;height:100%;will-change:transform}
.lb-track.anim{transition:transform .32s cubic-bezier(.2,.7,.2,1)}
.lb-slide{flex:0 0 100%;height:100%;display:flex;align-items:center;justify-content:center;padding:24px;box-sizing:border-box}
.lb-slide img{max-width:90vw;max-height:86vh;width:auto;height:auto;object-fit:contain;box-shadow:0 20px 60px rgba(0,0,0,.5);user-select:none;-webkit-user-drag:none}
.lb button{position:absolute;background:none;border:0;color:#fff;cursor:pointer;opacity:.85;transition:opacity .2s;z-index:2}
.lb button:hover{opacity:1}
.lb-close{top:24px;right:30px;font-size:36px;line-height:1}
.lb-prev,.lb-next{top:50%;transform:translateY(-50%);font-size:54px;padding:0 26px;font-family:var(--serif)}
.lb-prev{left:8px}.lb-next{right:8px}
.lb-count{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);color:#cfc8bd;font-size:13px;letter-spacing:.2em;z-index:2}
@media(max-width:760px){.lb-prev,.lb-next{display:none}}

/* ---------- footer ---------- */
.foot{background:#34322c;color:#cfc8bd;text-align:center;padding:74px 24px 56px}
.foot-brand{font-family:var(--serif);font-size:24px;letter-spacing:.2em;color:#fff}
.foot-brand span{font-size:13px;letter-spacing:.4em;color:#9a9286;margin-left:8px}
.foot-tag{margin-top:14px;font-size:13px;letter-spacing:.3em;color:#9a9286}
.foot-links{margin:30px 0 26px;display:flex;gap:30px;justify-content:center}
.foot-links a{font-size:13px;letter-spacing:.18em;color:#cfc8bd;transition:color .25s}
.foot-links a:hover{color:#fff}
.foot-copy{font-size:12px;letter-spacing:.1em;color:#736c61}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .nav{padding:16px 22px}.links{gap:22px}
  .works{padding:24px 22px 90px}
}
/* 平板:作品內頁 masonry 兩欄 */
@media(max-width:760px){
  .w-gallery{column-count:2;column-gap:8px;padding:0 16px}
  .shot{margin:0 0 8px}
  .lb-prev,.lb-next{font-size:40px;padding:0 14px}
}
@media(max-width:560px){
  /* 手機單欄:標題緊貼上方自己的圖、卡片間拉大間距,避免標題歸屬不清 */
  .grid{grid-template-columns:1fr;gap:42px}
  .card figcaption{padding:11px 4px 0}
  .links a{font-size:12px}.links{gap:16px}
  .intro{padding:64px 26px}
  /* 手機:作品內頁單欄瀑布流(masonry 單欄即原比例往下排) */
  .w-gallery{column-count:1}
  .shot{cursor:default;margin:0 0 6px}
}

/* ============ 導覽手機漢堡選單 ============ */
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{display:block;width:24px;height:1.5px;background:var(--ink);transition:.3s}
@media(max-width:820px){
  .nav{position:sticky}
  .nav-toggle{display:flex}
  .links{position:absolute;top:100%;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);
    flex-direction:column;gap:0;padding:6px 0;max-height:0;overflow:hidden;transition:max-height .35s ease;box-shadow:0 16px 30px rgba(0,0,0,.06)}
  .links.open{max-height:420px}
  .links a{padding:14px 26px;font-size:15px;border-top:1px solid var(--line)}
  .links a:first-child{border-top:0}
}

/* ============ 通用按鈕 / page-head / lead ============ */
/* 主要按鈕:墨褐實底白字、直角(DS) */
.btn{display:inline-block;padding:14px 32px;border:1px solid var(--ink);background:var(--ink);color:var(--bg);
  font-size:14px;letter-spacing:.16em;transition:all .25s;border-radius:0}
.btn:hover{background:#34322c;border-color:#34322c;color:var(--bg)}
/* 強調按鈕:霧青底白字(DS 指定 Line/強調用霧青) */
.btn-line{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-line:hover{background:var(--sage-darker);border-color:var(--sage-darker);color:#fff}
.page-head{text-align:center;padding:96px 24px 40px}
.page-head h1{font-family:var(--serif);font-weight:400;font-size:clamp(30px,4.5vw,46px);letter-spacing:.1em;margin-top:8px}
.lead{max-width:640px;margin:22px auto 0;color:var(--soft);font-size:16px;line-height:2}

/* ============ 關於 /about/ ============ */
.about{max-width:1180px;margin:0 auto;padding:80px 40px 110px;display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.about-text .about-kicker{font-family:var(--serif);font-size:20px;color:var(--accent);margin:18px 0 10px;letter-spacing:.1em}
.about-text h1{font-family:var(--serif);font-weight:400;font-size:clamp(26px,3.4vw,38px);line-height:1.5;letter-spacing:.06em;margin-bottom:28px}
.about-body{color:var(--soft);font-size:16px;line-height:2.2;margin-bottom:36px}
.about-imgs{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.about-imgs figure:first-child{grid-row:span 2}
.about-imgs img{height:100%;object-fit:cover;background:var(--panel)}
@media(max-width:820px){.about{grid-template-columns:1fr;gap:40px;padding:56px 24px 80px}}

/* ============ 服務 /services/ ============ */
.svc-cats{max-width:1180px;margin:0 auto;padding:30px 40px 70px;display:grid;grid-template-columns:repeat(2,1fr);gap:50px 64px}
.svc-en{font-size:12px;letter-spacing:.3em;color:var(--accent)}
.svc-cat h3{font-family:var(--serif);font-weight:400;font-size:23px;margin:12px 0 14px;letter-spacing:.06em}
.svc-cat p{color:var(--soft);line-height:2}
.pricing{background:var(--panel);padding:84px 24px}
.price-grid{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.price-card{background:var(--bg);padding:34px 30px;border:1px solid var(--line)}
.price-group{font-size:12px;letter-spacing:.2em;color:var(--accent);margin-bottom:12px}
.price-card h3{font-family:var(--serif);font-weight:400;font-size:25px;letter-spacing:.04em}
.price-note{color:var(--muted);font-size:13.5px;margin-top:8px}
.price-amt{font-family:var(--serif);font-size:20px;margin:16px 0 14px;color:var(--ink)}
.price-card ul{list-style:none;margin-top:14px;border-top:1px solid var(--line);padding-top:16px}
.price-card li{color:var(--soft);font-size:14px;line-height:2;padding-left:2px}
.process{max-width:900px;margin:0 auto;padding:88px 24px 110px}
.steps{list-style:none;counter-reset:s}
.steps li{display:flex;gap:24px;align-items:baseline;padding:20px 0;border-bottom:1px solid var(--line)}
.steps .step-n{flex:0 0 40px;font-family:var(--serif);font-size:20px;color:var(--accent)}
.step-c{flex:1;display:grid;grid-template-columns:130px 1fr;gap:18px;align-items:baseline}
.step-c b{font-weight:500;color:var(--ink);letter-spacing:.06em}
.step-c p{color:var(--soft);line-height:1.9}
.terms{margin-top:34px;color:var(--muted);font-size:13.5px;line-height:2;background:var(--panel);padding:24px 28px;border-radius:3px}
.svc-cta{text-align:center;margin-top:46px}
@media(max-width:820px){
  .svc-cats{grid-template-columns:1fr;gap:38px;padding:24px 24px 50px}
  .price-grid{grid-template-columns:1fr}
  .steps li{gap:14px}
  .step-c{grid-template-columns:1fr;gap:4px}
}

/* ============ 聯絡 /contact/ ============ */
.contact{max-width:720px;margin:0 auto;padding:110px 24px 130px;text-align:center}
.contact h1{font-family:var(--serif);font-weight:400;font-size:clamp(30px,4.5vw,46px);letter-spacing:.1em;margin-top:8px}
.contact-lead{color:var(--soft);line-height:2.1;margin:26px 0 44px}
.contact-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.contact-social{margin-top:40px;display:flex;gap:28px;justify-content:center}
.contact-social a{font-size:13px;letter-spacing:.18em;color:var(--muted);transition:color .25s}
.contact-social a:hover{color:var(--ink)}

/* ============ footer 補充 ============ */
.foot-contact{margin:18px 0 8px;display:flex;gap:26px;justify-content:center;flex-wrap:wrap}
.foot-contact a{font-size:13px;letter-spacing:.06em;color:#cfc8bd}
.foot-contact a:hover{color:#fff}

/* ============ 首頁:服務項目內鏈區 ============ */
.svc-types{max-width:1180px;margin:0 auto;padding:10px 40px 30px}
.svc-types-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.svc-type{display:flex;align-items:center;justify-content:space-between;padding:26px 24px;border:1px solid var(--line);
  background:var(--bg);transition:all .3s}
.svc-type span{font-family:var(--serif);font-size:17px;letter-spacing:.04em}
.svc-type em{font-style:normal;color:var(--accent);transition:transform .3s}
.svc-type:hover{background:var(--panel);border-color:var(--accent)}
.svc-type:hover em{transform:translateX(5px)}
@media(max-width:820px){.svc-types{padding:10px 22px 20px}.svc-types-grid{grid-template-columns:1fr 1fr;gap:10px}}
@media(max-width:480px){.svc-types-grid{grid-template-columns:1fr}}

/* ============ SEO 分項專頁 ============ */
.land-hero{position:relative;height:64vh;min-height:420px;background-size:cover;background-position:center;
  display:flex;align-items:center;justify-content:center;text-align:center;color:#fff}
.land-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(28,24,20,.42),rgba(28,24,20,.56))}
.land-hero-inner{position:relative;z-index:2;padding:0 24px}
.land-kicker{font-size:13px;letter-spacing:.4em;margin-bottom:22px;opacity:.92}
.land-hero h1{font-family:var(--serif);font-weight:400;font-size:clamp(30px,5vw,52px);letter-spacing:.06em;line-height:1.3}
.land-sub{margin-top:22px;font-size:16px;letter-spacing:.16em;opacity:.95}
.land-body-wrap{max-width:820px;margin:0 auto;padding:80px 32px 40px}
.land-intro{font-family:var(--serif);font-size:clamp(17px,2vw,20px);line-height:2.2;color:var(--soft);text-align:center;margin-bottom:30px}
.land-sec{padding:40px 0;border-top:1px solid var(--line)}
.land-sec h2{font-family:var(--serif);font-weight:400;font-size:25px;letter-spacing:.08em;margin-bottom:22px;text-align:center}
.land-body{color:var(--soft);font-size:16px;line-height:2.1}
.land-list{list-style:none;margin-top:14px}
.land-list li{color:var(--soft);font-size:15.5px;line-height:1.9;padding:12px 0 12px 22px;border-bottom:1px solid var(--line);position:relative}
.land-list li::before{content:"—";position:absolute;left:0;color:var(--accent)}
.land-cta{text-align:center;padding:54px 0;border-top:1px solid var(--line)}
.land-cta-note{color:var(--ink);font-size:16px;margin-bottom:26px}
.land-cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.land-worklink{margin-top:22px}
.land-worklink a{color:var(--muted);font-size:14px;letter-spacing:.1em}
.land-worklink a:hover{color:var(--ink)}
/* FAQ */
.faq{padding:30px 0 20px;border-top:1px solid var(--line)}
.faq-item{padding:22px 0;border-bottom:1px solid var(--line)}
.faq-item h3{font-family:var(--serif);font-weight:500;font-size:18px;margin-bottom:10px;letter-spacing:.04em}
.faq-item p{color:var(--soft);line-height:2;font-size:15px}
/* 同層互鏈 */
.land-siblings{text-align:center;padding:50px 0 10px;border-top:1px solid var(--line)}
.sib-label{display:block;font-size:12px;letter-spacing:.3em;color:var(--muted);margin-bottom:18px}
.sib-links{display:flex;gap:14px 26px;justify-content:center;flex-wrap:wrap}
.sib-links a{font-family:var(--serif);font-size:16px;color:var(--ink);border-bottom:1px solid var(--accent);padding-bottom:2px}
.sib-links a:hover{color:var(--accent)}
.sib-home{margin-top:24px;font-size:14px;color:var(--muted)}
.sib-home a{color:var(--accent)}

/* ============ 專題文章列表 /blog/ ============ */
.blog-list{max-width:1080px;margin:0 auto;padding:20px 40px 110px;display:grid;grid-template-columns:1fr 1fr;gap:40px 36px}
.art-card{display:block;group:card}
.art-card figure{overflow:hidden;background:var(--panel);aspect-ratio:3/2}
.art-card img{height:100%;object-fit:cover;transition:transform .8s cubic-bezier(.2,.7,.2,1)}
.art-card:hover img{transform:scale(1.05)}
.art-card-c{padding:22px 4px 0}
.art-kicker{display:block;font-size:11px;letter-spacing:.24em;color:var(--accent);margin-bottom:12px}
.art-card-c h2{font-family:var(--serif);font-weight:400;font-size:22px;line-height:1.5;letter-spacing:.04em;margin-bottom:12px}
.art-card-c p{color:var(--soft);font-size:14.5px;line-height:1.9}
@media(max-width:760px){.blog-list{grid-template-columns:1fr;gap:36px;padding:16px 22px 80px}}

/* ============ 文章內頁 ============ */
.article{padding-bottom:30px}
.art-head{max-width:760px;margin:0 auto;padding:80px 32px 30px;text-align:center}
.art-head .art-kicker{margin:30px 0 14px}
.art-head h1{font-family:var(--serif);font-weight:400;font-size:clamp(26px,3.8vw,40px);line-height:1.5;letter-spacing:.04em}
.art-cover{max-width:1000px;margin:14px auto 0;padding:0 24px}
.art-cover img{width:100%;height:auto;background:var(--panel)}
.art-body{max-width:720px;margin:0 auto;padding:52px 32px 10px}
.art-body p{color:#54504a;font-size:16.5px;line-height:2.15;margin-bottom:26px}
.art-body h2{font-family:var(--serif);font-weight:500;font-size:23px;letter-spacing:.05em;margin:48px 0 20px;padding-top:6px}
.art-body ul{list-style:none;margin:0 0 26px}
.art-body li{position:relative;color:#54504a;font-size:16px;line-height:2.05;padding:14px 0 14px 26px;border-bottom:1px solid var(--line)}
.art-body li::before{content:"—";position:absolute;left:0;color:var(--accent)}
/* 文章結尾:CTA + 情境連結 */
.art-end{max-width:720px;margin:50px auto 0;padding:0 32px}
.art-cta{background:var(--panel);padding:42px 34px;text-align:center;border-radius:3px}
.art-cta-h{font-family:var(--serif);font-size:21px;letter-spacing:.05em;margin-bottom:26px}
.art-cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.art-related{margin-top:34px;text-align:center}
.ar-label{display:block;font-size:11px;letter-spacing:.26em;color:var(--muted);margin-bottom:16px}
.ar-links{display:flex;gap:12px 22px;justify-content:center;flex-wrap:wrap}
.ar-links a{font-family:var(--serif);font-size:15.5px;color:var(--ink);border-bottom:1px solid var(--accent);padding-bottom:2px}
.ar-links a:hover{color:var(--accent)}
/* 文章結尾:精選作品帶 */
.art-works{max-width:1080px;margin:70px auto 0;padding:50px 40px 110px;border-top:1px solid var(--line)}
.ws-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.ws-item figure{overflow:hidden;background:var(--panel);aspect-ratio:4/3}
.ws-item img{height:100%;object-fit:cover;transition:transform .8s cubic-bezier(.2,.7,.2,1)}
.ws-item:hover img{transform:scale(1.06)}
.ws-item span{display:block;text-align:center;font-family:var(--serif);font-size:14px;color:var(--soft);margin-top:10px}
.ws-more{text-align:center;margin-top:34px}
.ws-more a{font-size:14px;letter-spacing:.12em;color:var(--muted)}
.ws-more a:hover{color:var(--ink)}
@media(max-width:760px){
  .art-works{padding:40px 22px 80px}
  .ws-grid{grid-template-columns:1fr 1fr;gap:10px}
  .art-cta{padding:32px 22px}
}