/* =============================================================================
   深河出版 提案站 — 共用樣式 site.css
   消費 design-tokens.css 的 token；各頁面 link 本檔 + tokens。
   ============================================================================= */
:root{
  /* 資產型 token（url 依本檔位置解析、與 images/ 同層，故定義於此而非 tokens/ 檔，
     避免 build.sh 壓平目錄後路徑斷）。官方輔助圖＝印記符號單色藍浮水印。 */
  --brand-aux: url(../images/brand-seal-blue.svg);
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:var(--font-sans);color:var(--text-primary);background:var(--color-river-gradient-bottom);overflow-x:hidden;-webkit-font-smoothing:antialiased;}
#water{position:fixed;inset:0;width:100vw;height:100vh;z-index:1;display:block;pointer-events:none;mix-blend-mode:screen;}
/* 全頁細紙紋點綴 */
.grain{position:fixed;inset:0;z-index:3;pointer-events:none;opacity:.05;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");}

/* nav */
nav{position:fixed;top:0;left:0;width:100%;display:flex;align-items:center;justify-content:space-between;padding:22px 6vw;z-index:40;transition:background .4s ease,padding .4s ease;}
nav.scrolled{background:var(--color-nav-scrolled-bg);backdrop-filter:blur(8px);padding:14px 6vw;}
.wordmark{display:inline-flex;align-items:center;color:var(--color-on-river);cursor:pointer;text-decoration:none;}
.wordmark img{height:30px;width:auto;display:block;}
.nav-right{display:flex;align-items:center;gap:16px;}
/* 收合式全螢幕選單（全裝置一致，點擊才展開） */
.nav-links{position:fixed;inset:0;width:100%;height:100vh;height:100dvh;background:var(--color-nav-panel-bg);backdrop-filter:blur(8px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0;transform:translateY(-100%);transition:transform .6s cubic-bezier(.16,1,.3,1);z-index:45;}
nav.menu-open .nav-links{transform:translateY(0);}
.nav-links a{color:var(--color-on-river);text-decoration:none;text-align:center;font-family:var(--font-serif);font-size:22px;letter-spacing:5px;padding:14px 0;opacity:.9;transition:opacity .25s,color .25s;}
.nav-links a:hover{opacity:1;}
.nav-links a.cur{opacity:1;color:var(--color-river-accent);}
/* 展開選單最上方：站內搜尋 */
.nav-search{display:flex;align-items:center;gap:10px;width:min(78vw,360px);color:var(--color-on-river);border-bottom:1px solid rgba(var(--color-on-river-rgb),.3);padding-bottom:12px;margin-bottom:34px;}
.nav-search svg{opacity:.7;flex-shrink:0;}
.nav-search input{flex:1;background:transparent;border:none;outline:none;color:var(--color-on-river);font-size:15px;letter-spacing:1px;font-family:var(--font-sans);}
.nav-search input::placeholder{color:rgba(var(--color-on-river-rgb),.45);}
.lang{display:flex;gap:2px;border:1px solid rgba(var(--color-on-river-rgb),.35);border-radius:2px;overflow:hidden;}
.lang button{background:transparent;border:none;color:var(--color-on-river);font-size:11px;padding:5px 10px;cursor:pointer;letter-spacing:1px;opacity:.6;transition:.25s;font-family:var(--font-sans);white-space:nowrap;}
.lang button.active{background:var(--color-on-river);color:var(--color-river-gradient-bottom);opacity:1;}
.nav-toggle{display:flex;position:relative;z-index:46;flex-direction:column;justify-content:center;gap:5px;width:38px;height:38px;background:transparent;border:none;cursor:pointer;padding:8px;}
.nav-toggle span{display:block;height:2px;width:100%;background:var(--color-on-river);border-radius:2px;transition:transform .3s ease,opacity .3s ease;}
nav.menu-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
nav.menu-open .nav-toggle span:nth-child(2){opacity:0;}
nav.menu-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 鍵盤 focus 樣式 */
.nav-links a:focus-visible,.lang button:focus-visible,
.nav-search input:focus-visible,.nav-toggle:focus-visible,.btn:focus-visible,.more-link:focus-visible,
.wordmark:focus-visible,.pub-card:focus-visible,
.event-card:focus-visible,.goods-card:focus-visible,.article:focus-visible,
.back-link:focus-visible,.detail-cta:focus-visible,.side-feat:focus-visible{
  outline:2px solid var(--color-on-river);outline-offset:3px;}
.btn:focus-visible,.more-link:focus-visible,.pub-card:focus-visible,
.event-card:focus-visible,.goods-card:focus-visible,.article:focus-visible,
.back-link:focus-visible,.detail-cta:focus-visible,.side-feat:focus-visible{outline-color:var(--accent);outline-offset:4px;}
/* 靜態（非連結）卡片：示意項目不導頁，但保留 hover 視覺回饋（與代表卡一致）*/
.card-static{cursor:default;}
/* 停用狀態 CTA（功能尚未開放的示意） */
.detail-cta.is-disabled{opacity:.5;cursor:not-allowed;}
.detail-cta.is-disabled::after{display:none;}
/* 首頁預覽卡：非連結的展示卡，導覽由「查看所有」按鈕負責 */
.is-preview .event-card,.is-preview .article{cursor:default;}
.is-preview .event-card:hover{transform:none;}
.is-preview .article:hover{padding-left:0;}

/* hero */
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--color-on-river);padding:0 24px;overflow:hidden;}
.hero-banner{position:absolute;inset:0;z-index:0;background:url("../images/hero-landscape.webp?v=10") center 44%/cover no-repeat;}
.hero-ripple{position:absolute;inset:0;z-index:1;width:100%;height:100%;display:block;opacity:0;transition:opacity .7s ease;}
.hero-ripple.is-on{opacity:1;}
.hero::after{content:"";position:absolute;inset:0;z-index:2;pointer-events:none;background:linear-gradient(180deg,rgba(10,30,58,.52) 0%,rgba(15,46,80,.34) 42%,rgba(10,30,58,.66) 100%);}
.hero-content{position:relative;z-index:3;}
.hero .kicker{font-size:12px;letter-spacing:6px;opacity:.7;margin-bottom:30px;font-weight:300;}
.hero h1{font-family:var(--font-serif);font-weight:300;font-size:clamp(56px,11vw,140px);letter-spacing:20px;text-indent:20px;line-height:1.05;}
/* 首頁 hero 官方印章 Logo（單色白版，無陰影／效果，遵守手冊 b.07） */
.hero-logo{display:flex;justify-content:center;margin:0;}
.hero-logo img{height:clamp(150px,26vh,280px);width:auto;display:block;}
.hero .tagline{margin-top:34px;font-size:clamp(14px,1.7vw,19px);font-weight:300;letter-spacing:4px;opacity:.85;}
/* 子頁 hero（specificity 高於 .hero h1，避免被覆蓋） */
.hero--sub{min-height:74vh;}
.hero.hero--sub h1{font-size:clamp(40px,7vw,92px);letter-spacing:12px;text-indent:12px;}
.scroll-hint{position:absolute;z-index:3;bottom:40px;left:50%;transform:translateX(-50%);font-size:11px;letter-spacing:3px;opacity:.7;color:var(--color-on-river);display:flex;flex-direction:column;align-items:center;gap:10px;}
.scroll-hint .line{width:1px;height:46px;background:linear-gradient(var(--color-on-river),transparent);animation:drip 2.4s ease-in-out infinite;}
@keyframes drip{0%{transform:scaleY(0);transform-origin:top;opacity:0;}40%{transform:scaleY(1);transform-origin:top;opacity:1;}60%{transform:scaleY(1);transform-origin:bottom;opacity:1;}100%{transform:scaleY(0);transform-origin:bottom;opacity:0;}}

/* panels */
.panel{position:relative;z-index:2;background:var(--surface-paper-translucent);padding:130px 8vw;overflow:hidden;}
.panel-inner{position:relative;z-index:1;max-width:1180px;margin:0 auto;}
/* 官方輔助圖背景點綴：官方印記符號（單色藍浮水印），呼應手冊那種乾淨大留白＋品牌印記的調性 */
.panel::before{content:"";position:absolute;top:50%;right:-4vw;transform:translateY(-50%);
  width:clamp(240px,30vw,460px);aspect-ratio:1/1;
  background:var(--brand-aux) no-repeat center/contain;
  opacity:.05;pointer-events:none;z-index:0;user-select:none;}
.panel:nth-of-type(even)::before{right:auto;left:-3vw;}
.panel::after{content:"";position:absolute;width:62vw;height:62vw;max-width:780px;max-height:780px;border-radius:50%;
  background:radial-gradient(circle,rgba(var(--color-accent-primary-rgb),.10),transparent 66%);
  filter:blur(26px);pointer-events:none;z-index:0;bottom:-20vw;left:-12vw;}
.panel:nth-of-type(even)::after{left:auto;right:-12vw;bottom:auto;top:-20vw;}
.sec-label{font-family:var(--font-serif);font-size:13px;letter-spacing:5px;color:var(--accent);margin-bottom:18px;display:flex;align-items:center;gap:14px;}
.sec-label::before{content:"";width:34px;height:1px;background:var(--accent);}
.sec-title{font-family:var(--font-serif);font-weight:500;font-size:clamp(28px,4vw,46px);color:var(--text-primary);letter-spacing:3px;line-height:1.4;margin-bottom:24px;}
.spirit-text{font-size:clamp(16px,1.7vw,19px);line-height:2.4;font-weight:300;color:var(--color-text-emphasis);letter-spacing:1px;}
.spirit-text .em{font-family:var(--font-serif);color:var(--accent);font-size:1.12em;}
.body-copy{font-size:16px;line-height:2.05;font-weight:400;color:var(--color-text-body);letter-spacing:.4px;}
.body-copy p+p{margin-top:18px;}
.more-link{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:14px;letter-spacing:1px;cursor:pointer;text-decoration:none;margin-top:30px;transition:gap .3s ease;}
.more-link:hover{gap:14px;}

.reveal{opacity:0;transform:translateY(82px);filter:blur(7px);transition:opacity 1.3s var(--motion-ease-river),transform 1.85s cubic-bezier(.16,.6,.3,1),filter 1.5s var(--motion-ease-river);}
.reveal.in{opacity:1;transform:translateY(0);filter:blur(0);}

/* 水流換頁過場：畫面先滿水（曲線在畫面外），啟動後曲線自上方滑入下沉退去 + hero 文字自水底浮上 */
@keyframes veilSink{0%{transform:translateY(0);}100%{transform:translateY(118%);}}
@keyframes heroSurface{from{opacity:0;transform:translateY(58px);filter:blur(8px);}to{opacity:1;transform:translateY(0);filter:blur(0);}}
.page-veil{position:fixed;left:0;right:0;top:-45vh;height:190vh;z-index:300;pointer-events:none;transform:translateY(118%);
  background:linear-gradient(180deg,var(--color-river-gradient-mid) 0%,var(--color-river-gradient-mid) 10%,var(--color-river-gradient-bottom) 100%);
  --river:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1600' height='2000' preserveAspectRatio='none' viewBox='0 0 1600 2000'%3E%3Cpath d='M0,168 C170,86 322,104 470,180 C628,262 742,246 862,150 C1002,38 1146,92 1284,178 C1408,255 1522,196 1600,138 L1600,2000 L0,2000 Z' fill='%23ffffff'/%3E%3C/svg%3E");
  -webkit-mask:var(--river) no-repeat top/100% 100%;
  mask:var(--river) no-repeat top/100% 100%;}
.has-js .page-veil{animation:veilSink 1.25s cubic-bezier(.4,0,.28,1) both;}
.page-veil.is-rising{animation:none;transition:transform .68s cubic-bezier(.4,0,.3,1);transform:translateY(0);}
.has-js .hero-content{animation:heroSurface 1.35s var(--motion-ease-river) .18s both;}
@media(prefers-reduced-motion:reduce){
  .page-veil{display:none;}
  .has-js .hero-content{animation:none;}
}

.grid-tw{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center;}
.grid-wt{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:center;}
.img-frame{position:relative;overflow:hidden;background:var(--color-imgph-bg);border-radius:2px;}
.img-frame img{width:100%;height:100%;object-fit:cover;display:block;}
.img-frame.tall{aspect-ratio:4/5;}
.anno{margin-top:34px;font-size:12px;color:var(--accent);background:rgba(var(--color-accent-primary-rgb),.07);border-left:3px solid var(--accent);padding:13px 18px;letter-spacing:.5px;line-height:1.85;}

/* 出版理念三柱（關於頁） */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:50px;margin-top:64px;}
.pillar{border-top:1px solid rgba(var(--color-accent-primary-rgb),.45);padding-top:28px;}
.pillar .pnum{font-family:var(--font-serif);font-size:30px;font-weight:300;color:var(--accent-soft);letter-spacing:4px;line-height:1;}
.pillar h3{font-family:var(--font-serif);font-size:22px;font-weight:500;letter-spacing:3px;margin:16px 0 16px;color:var(--text-primary);}
.pillar p{font-size:14px;line-height:2;font-weight:300;color:var(--text-secondary);letter-spacing:.5px;}
.team-photo{margin-top:54px;border-radius:2px;overflow:hidden;aspect-ratio:10/7;background:var(--color-imgph-bg);}
.team-photo img{width:100%;height:100%;object-fit:cover;display:block;}

/* book（首頁出版品預覽） */
.book-show{display:flex;justify-content:center;}
.book{width:min(300px,80%);aspect-ratio:3/4;border-radius:2px 6px 6px 2px;box-shadow:var(--shadow-book-rest);overflow:hidden;position:relative;background:linear-gradient(135deg,var(--color-river-gradient-mid),var(--color-river-gradient-bottom));}
.book img{width:100%;height:100%;object-fit:cover;display:block;}
/* 書封色塊示意（缺料佔位）：官方主色實色塊＋直排書名，不使用假封面圖 */
.book-ph{background:var(--color-accent-primary);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;color:var(--color-on-river);}
.book-ph-title{font-family:var(--font-serif);font-size:34px;letter-spacing:10px;writing-mode:vertical-rl;}
.book-ph-note{font-size:11px;letter-spacing:2px;opacity:.55;}
.book-meta{margin-top:6px;}
.book-meta .bk-title{font-family:var(--font-serif);font-size:24px;letter-spacing:3px;color:var(--text-primary);margin-bottom:10px;}
.book-meta .bk-author{font-size:13px;letter-spacing:1px;color:var(--text-secondary);margin-bottom:18px;}
.book-meta .bk-quote{font-family:var(--font-serif);font-size:17px;line-height:1.9;color:var(--accent);letter-spacing:1px;}

/* 出版品列表 */
.filter-bar{display:flex;gap:14px;flex-wrap:wrap;align-items:center;padding:18px 0;border-top:1px solid var(--color-border-divider);border-bottom:1px solid var(--color-border-divider);margin:8px 0 50px;}
.filter-bar .fl-label{font-size:13px;color:var(--text-secondary);letter-spacing:1px;margin-right:6px;}
.select-fake{border:none;border-bottom:1px solid var(--color-border-divider);color:var(--accent);background:none;font-size:13px;padding:7px 2px;border-radius:0;letter-spacing:1px;display:inline-flex;align-items:center;gap:12px;cursor:pointer;transition:border-color .3s;}
.select-fake:hover{border-bottom-color:var(--accent);}
.select-fake::after{content:"\25BE";font-size:9px;opacity:.6;margin-left:2px;}
.backstage-note{margin-top:32px;font-size:13px;color:var(--text-secondary);font-weight:300;letter-spacing:1px;display:flex;align-items:center;gap:10px;}
.backstage-note::before{content:"\2699";color:var(--accent);font-size:15px;}
.pub-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:50px 40px;}
.pub-card{cursor:pointer;text-decoration:none;display:block;perspective:1600px;position:relative;}
/* 書身：頁面厚度（掀開時露出，像書而非紙板）*/
.pub-card::before{content:"";position:absolute;top:0;left:0;width:100%;padding-top:133.33%;
  border-radius:2px 5px 5px 2px;
  background:linear-gradient(90deg,#eee6d4 0,#fbf7ef 46%,#f3ebda 88%,#e6ddc8 100%);
  box-shadow:inset -8px 0 14px -6px rgba(0,0,0,.2), 0 12px 26px rgba(16,29,77,.16);
  z-index:0;pointer-events:none;opacity:0;transition:opacity .35s ease .1s;}
.pub-card:hover::before{opacity:1;}
.pub-cover{position:relative;z-index:1;aspect-ratio:3/4;border-radius:2px 6px 6px 2px;overflow:hidden;box-shadow:var(--shadow-book-rest);transform-origin:left center;backface-visibility:hidden;transition:transform .62s cubic-bezier(.34,.02,.15,1),box-shadow .62s cubic-bezier(.34,.02,.15,1);}
.pub-card:hover .pub-cover:not(.ph){transform:rotateY(-34deg);box-shadow:24px 26px 54px rgba(16,29,77,.36);}
.pub-cover img{width:100%;height:100%;object-fit:cover;display:block;}
.pub-cover.ph{display:flex;align-items:center;justify-content:center;background:var(--color-imgph-bg);box-shadow:none;color:var(--accent);font-size:13px;letter-spacing:1px;text-align:center;padding:16px;}
/* 書封色塊示意（實色官方主色＋直排書名，缺料佔位不用假封面圖） */
.pub-cover.solid{display:flex;align-items:center;justify-content:center;background:var(--color-accent-primary);color:var(--color-on-river);font-family:var(--font-serif);font-size:28px;letter-spacing:8px;writing-mode:vertical-rl;}
.pub-card .pc-title{font-family:var(--font-serif);font-size:18px;letter-spacing:1px;margin-top:18px;margin-bottom:5px;color:var(--text-primary);}
.pub-card .pc-meta{font-size:12px;color:var(--text-secondary);letter-spacing:1px;}

/* 周邊商品 */
.goods-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:44px 36px;}
.goods-card{cursor:pointer;text-decoration:none;display:block;}
.goods-media{aspect-ratio:1/1;border-radius:2px;overflow:hidden;background:var(--color-imgph-bg);transition:transform .4s var(--motion-ease-river);}
.goods-card:hover .goods-media{transform:translateY(-6px);}
.goods-media img{width:100%;height:100%;object-fit:cover;display:block;}
.goods-card .gc-name{font-family:var(--font-serif);font-size:18px;letter-spacing:1px;margin-top:18px;margin-bottom:8px;color:var(--text-primary);}
.goods-card .gc-desc{font-size:13px;line-height:1.8;color:var(--text-secondary);font-weight:300;margin-bottom:10px;}
.goods-card .gc-cta{font-size:12px;letter-spacing:1px;color:var(--accent-soft);}
@media(max-width:560px){.goods-grid{grid-template-columns:repeat(2,1fr);gap:30px 18px;}}

/* events（首頁活動預覽） */
.event-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:34px;margin-top:56px;}
.event-card{display:block;background:var(--surface-card);border:1px solid var(--color-border-card);overflow:hidden;cursor:pointer;text-decoration:none;transition:transform .35s var(--motion-ease-river);}
.event-card:hover{transform:translateY(-6px);}
.event-media{aspect-ratio:16/9;background:var(--color-imgph-bg);overflow:hidden;position:relative;}
.event-media img{width:100%;height:100%;object-fit:cover;display:block;}
.event-media .tag{position:absolute;top:12px;left:12px;background:rgba(var(--color-accent-primary-rgb),.9);color:var(--color-on-river);font-size:10px;letter-spacing:1px;padding:4px 10px;border-radius:2px;}
.event-body{padding:24px 26px;}
.event-body .date{font-size:11px;letter-spacing:2px;color:var(--accent);margin-bottom:10px;font-family:var(--font-serif);}
.event-body h4{font-family:var(--font-serif);font-size:18px;letter-spacing:1px;margin-bottom:12px;font-weight:500;color:var(--text-primary);}
.event-body p{font-size:13px;line-height:1.9;color:var(--text-secondary);font-weight:300;}

/* journal（首頁專欄預覽 + 專欄列表） */
.journal-list{margin-top:48px;}
.article{display:flex;gap:30px;padding:28px 0;border-bottom:1px solid var(--color-border-divider);align-items:baseline;cursor:pointer;transition:padding-left .3s var(--motion-ease-river);text-decoration:none;}
.article:first-child{padding-top:0;}
.article:hover{padding-left:12px;}
.article .a-date{font-size:12px;color:var(--accent);letter-spacing:1px;white-space:nowrap;font-family:var(--font-serif);min-width:90px;}
.article .a-main h4{font-family:var(--font-serif);font-size:20px;font-weight:500;letter-spacing:1px;margin-bottom:9px;color:var(--text-primary);}
.article .a-main p{font-size:13px;color:var(--text-secondary);font-weight:300;line-height:1.8;}
.article .a-cat{margin-left:auto;font-size:11px;letter-spacing:1px;color:var(--accent-soft);border:none;padding:0;white-space:nowrap;display:inline-flex;align-items:center;gap:7px;}
.article .a-cat::before{content:"";width:4px;height:4px;border-radius:50%;background:currentColor;flex-shrink:0;}
/* 專欄列表 + 側欄 */
.grid-list-side{display:grid;grid-template-columns:1.7fr 1fr;gap:60px;align-items:start;margin-top:48px;}
.grid-list-side .journal-list{margin-top:0;}
.side-box{background:var(--surface-card);border:1px solid var(--color-border-card);padding:28px 26px;}
.side-box+.side-box{margin-top:24px;}
.side-box h5{font-family:var(--font-serif);font-size:15px;letter-spacing:2px;margin-bottom:18px;color:var(--text-primary);}
.side-box .cat-row{display:flex;justify-content:space-between;font-size:13px;color:var(--text-secondary);padding:9px 0;border-bottom:1px dashed var(--color-border-divider);cursor:pointer;}
.side-box .cat-row:last-child{border-bottom:none;}
.side-box .cat-row:hover{color:var(--accent);}
.side-feat{display:block;font-family:var(--font-serif);font-size:15px;line-height:1.7;color:var(--text-primary);padding:11px 0;border-bottom:1px dashed var(--color-border-divider);cursor:pointer;text-decoration:none;}
.side-feat:last-child{border-bottom:none;}
.side-feat:hover{color:var(--accent);}
@media(max-width:820px){.grid-list-side{grid-template-columns:1fr;gap:34px;}}

/* 聯絡頁 */
.contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:70px;align-items:start;margin-top:48px;}
.form-row{margin-bottom:22px;}
.form-row label{display:block;font-size:13px;color:var(--text-secondary);letter-spacing:1px;margin-bottom:8px;}
.field{width:100%;border:1px solid var(--color-form-border);background:var(--surface-card);padding:12px 14px;font-size:14px;border-radius:2px;color:var(--text-primary);font-family:var(--font-sans);}
.field:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(var(--color-accent-primary-rgb),.15);}
textarea.field{min-height:130px;resize:vertical;}
select.field{cursor:pointer;}
.info-row{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--color-border-divider);font-size:14px;color:var(--color-text-body);}
.info-row .ir-label{color:var(--accent);font-size:13px;letter-spacing:1px;min-width:80px;flex-shrink:0;}
.merch-box{background:var(--surface-glaze);border-radius:2px;padding:30px 34px;margin-top:34px;}
.merch-box h4{font-family:var(--font-serif);font-size:18px;letter-spacing:2px;margin-bottom:14px;color:var(--accent);display:flex;align-items:center;gap:12px;}
.merch-box h4::before{content:"";width:22px;height:1px;background:var(--accent);flex-shrink:0;}
.merch-box p{font-size:13px;color:var(--text-secondary);line-height:2;font-weight:300;margin-bottom:12px;}
.merch-box .more-link{color:var(--accent);}
/* 內頁（詳細頁） */
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:13px;letter-spacing:1px;text-decoration:none;margin-top:44px;transition:gap .3s ease;}
.back-link:hover{gap:13px;}
.detail-narrow{max-width:var(--reading-max);margin:0 auto;}
.detail-banner{aspect-ratio:16/9;border-radius:2px;overflow:hidden;background:var(--color-imgph-bg);margin-bottom:44px;}
.detail-banner img{width:100%;height:100%;object-fit:cover;display:block;}
.detail-meta{display:flex;gap:16px;flex-wrap:wrap;align-items:center;font-size:13px;color:var(--text-secondary);letter-spacing:1px;margin-bottom:22px;}
.detail-title{font-family:var(--font-serif);font-weight:500;font-size:clamp(26px,3.6vw,42px);line-height:1.5;letter-spacing:2px;color:var(--text-primary);margin-bottom:24px;}
.detail-body{font-size:16px;line-height:2.05;font-weight:400;color:var(--color-text-body);letter-spacing:.4px;}
.detail-body p{margin-bottom:20px;}
.detail-tags{margin-top:34px;font-size:12px;color:var(--accent-soft);letter-spacing:1px;}
.sub-head{font-family:var(--font-serif);font-size:18px;letter-spacing:2px;color:var(--text-primary);margin:40px 0 16px;}
.photo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:20px 0;}
.photo-grid .ph-cell{aspect-ratio:1/1;border-radius:2px;overflow:hidden;background:var(--color-imgph-bg);}
.photo-grid .ph-cell img{width:100%;height:100%;object-fit:cover;display:block;}
.video-embed{aspect-ratio:16/9;background:var(--color-river-gradient-bottom);border-radius:2px;display:flex;align-items:center;justify-content:center;color:var(--color-on-river);font-size:13px;letter-spacing:2px;opacity:.9;margin:20px 0;}
/* 書籍/商品詳細 */
.book-detail{display:grid;grid-template-columns:.85fr 1.15fr;gap:60px;align-items:start;}
.book-detail .book{width:100%;max-width:300px;margin:0 auto;}
.detail-cta{display:inline-flex;align-items:center;gap:10px;border:none;color:var(--accent);background:none;font-family:var(--font-serif);font-size:15px;letter-spacing:1.5px;text-decoration:none;cursor:pointer;position:relative;padding:0 0 9px;margin-top:26px;transition:gap .35s ease;}
.detail-cta::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .55s var(--motion-ease-river);}
.detail-cta:hover{gap:16px;}
.detail-cta:hover::after{transform:scaleX(1);}
.detail-thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:16px;}
.detail-thumbs .ph-cell{aspect-ratio:1/1;border-radius:2px;overflow:hidden;background:var(--color-imgph-bg);display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:10px;letter-spacing:1px;text-align:center;}
.detail-thumbs .ph-cell img{width:100%;height:100%;object-fit:cover;display:block;}
@media(max-width:820px){.book-detail{grid-template-columns:1fr;gap:40px;}.photo-grid{gap:12px;}.contact-grid{grid-template-columns:1fr;gap:40px;}}
.center-more{text-align:center;margin-top:60px;}
/* 送出鈕：實心填色（表單需要明確 affordance，非框線） */
.btn{display:inline-flex;align-items:center;gap:8px;border:none;color:var(--color-on-river);background:var(--accent);font-size:13px;letter-spacing:2px;padding:15px 36px;border-radius:2px;cursor:pointer;font-family:var(--font-sans);transition:background .3s;text-decoration:none;}
.btn:hover{background:var(--accent-deep);}
/* 無邊界流動 CTA：文字 + 水般填入的底線 + 箭頭流出 */
.link-cta{display:inline-flex;align-items:center;gap:10px;color:var(--accent);background:none;border:none;font-family:var(--font-sans);font-size:14px;letter-spacing:2px;text-decoration:none;cursor:pointer;position:relative;padding:0 0 9px;transition:gap .35s ease;}
.link-cta::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .55s var(--motion-ease-river);}
.link-cta:hover{gap:16px;}
.link-cta:hover::after{transform:scaleX(1);}

/* footer */
footer{position:relative;z-index:2;color:var(--color-on-river);padding:130px 8vw 70px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;}
.foot-mark img{height:60px;width:auto;display:block;margin:0 auto;}
.foot-zh{font-size:14px;letter-spacing:6px;opacity:.9;margin-top:6px;}
.foot-en{font-size:11px;letter-spacing:5px;opacity:.6;}
.foot-note{margin-top:34px;font-size:11px;letter-spacing:1px;opacity:.55;}

@media(max-width:960px){
  .grid-tw,.grid-wt{grid-template-columns:1fr;gap:40px;}
  .event-grid{grid-template-columns:1fr;}
  /* 導覽為全裝置一致的收合式覆蓋層（見上方 .nav-links），此處僅收窄內距與選單字級 */
  .nav-links a{font-size:20px;letter-spacing:4px;}
  .panel{padding:84px 24px;}
  nav{padding:14px 24px;}
  .article{flex-direction:column;gap:8px;align-items:flex-start;}
  .article:hover{padding-left:0;}
  .article .a-cat{order:-1;}
}
@media(max-width:820px){
  .pillars{grid-template-columns:1fr;gap:34px;}
}
@media(max-width:560px){
  .pub-grid{grid-template-columns:repeat(2,1fr);gap:30px 18px;}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  #water{display:none;}
  body{background:var(--bg-canvas-fallback);}
  .reveal{opacity:1;transform:none;filter:none;transition:none;}
  .scroll-hint .line{animation:none;}
}
/* WebGL/GPU 不可用（軟體算圖）時的效能降階：關掉全頁動態水波與較貴的合成，
   改用靜態漸層底；hero 仍為靜態水面圖。避免無 GPU 機器上卡頓。 */
html.no-webgl #water{display:none;}
html.no-webgl body{background:var(--bg-canvas-fallback);}
html.no-webgl .grain{display:none;}
html.no-webgl nav.scrolled,
html.no-webgl .nav-links{backdrop-filter:none;}
html.no-webgl .hero-ripple{display:none;}