/* ============================================================
   劉哲銘醫師 — 網站草稿樣式
   配色（2026-06-29 Eric 定案）＝Will Style 原色：冷調近乎無彩、無暖色 accent、讓臨床照當主角
   氛圍參考 willstyle.co.jp（大量留白・雙語小標・錯落圖塊・大圖雜誌感）
   字體（2026-06-28 定案・組合③ 質感混搭）：
     標題＝源流明體 GenRyuMin（古典優雅、配書法簽名／作品集調性）
     內文＝思源黑體 Noto Sans TC Light（俐落好讀）
   ============================================================ */

/* 標題字：源流明體（自帶 OTF，Noto Serif TC 為備援） */
@font-face {
  font-family: "GenRyuMin";
  src: url("assets/GenRyuMin2TW-M.subset.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: "GenRyuMin";
  src: url("assets/GenRyuMin2TW-SB.subset.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}

:root {
  /* 配色＝Will Style 原色（2026-06-29 Eric 定案・冷調近乎無彩・讓臨床照當主角；取代舊暖色預設） */
  --ink:      #2B3338;   /* 墨黛 文字主色（冷調帶藍綠） */
  --mist:     #F0F0F0;   /* 冷調淺灰 主背景 */
  --stone:    #E7E8EA;   /* 冷灰 次背景/區塊 */
  --wood:     #5D6977;   /* 板岩灰 點綴（取代暖棕——willstyle 無暖色 accent） */
  --steel:    #929DAC;   /* 冷灰 次要/小標 */
  --warm:     #5D6977;   /* 板岩灰 副標/說明 */
  --dark:     #3B444E;   /* 深板岩藍 暗色段（footer/CTA 背景） */
  --hair:     rgba(93,105,121,0.26); /* 髮絲線（冷調） */
  --hair-soft:rgba(93,105,121,0.15);

  --serif: "GenRyuMin", "Noto Serif TC", serif;  /* 標題＝源流明體 */
  --sans:  "Noto Sans TC", system-ui, sans-serif; /* 內文＝思源黑體 */
  --en:    "Satoshi", "Inter", sans-serif;   /* 英文＝Satoshi（同 willstyle） */
  --en-serif: "EB Garamond", serif;

  --maxw: 1680px;
  --pad: clamp(22px, 4vw, 80px);   /* 滿版邊距（willstyle 式邊緣對齊，取代置中窄欄） */
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--mist);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.02em;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* 內文＝比照 willstyle：百分比式、無 px 上限、隨螢幕縮放（約 72%／兩側各 14% 邊距）；頭尾另設滿版 */
.wrap { width: 72%; margin-inline: auto; padding-inline: 0; }
@media (max-width: 768px) { .wrap { width: 86%; } }
/* 頭部導覽 & 底部資訊＝滿版邊緣對齊（brand 貼左、nav 貼右、footer 散兩側） */
.site-header > .wrap, .site-footer > .wrap { width: 100%; max-width: none; margin-inline: 0; padding-inline: var(--pad); }

/* ---------- 雙語小標 eyebrow ---------- */
.eyebrow { display: flex; align-items: center; gap: 14px; margin-bottom: 28px; }
.eyebrow::before {
  content: ""; width: 36px; height: 1px; background: var(--wood);
}
.eyebrow .en {
  font-family: var(--en); font-size: 12px; font-weight: 400;
  letter-spacing: 0.35em; text-transform: uppercase; color: var(--wood);
}
.eyebrow .zh { font-size: 13px; color: var(--warm); letter-spacing: 0.15em; }

/* 置中版小標 */
.eyebrow.center { justify-content: center; }

/* ---------- 標題 ---------- */
.serif { font-family: var(--serif); }
h1, h2, h3 { font-family: var(--serif); font-weight: 500; color: var(--ink); letter-spacing: 0.04em; }

.display {
  font-size: clamp(34px, 5vw, 60px);
  font-weight: 600; line-height: 1.45;
}
.h-sec { font-size: clamp(21px, 2.2vw, 30px); line-height: 1.6; font-weight: 500; }

.lead { color: var(--warm); font-size: clamp(15px,1.15vw,17px); line-height: 1.95; max-width: 38em; }

/* ---------- 按鈕 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 14px; letter-spacing: 0.12em;
  padding: 15px 30px; border-radius: 3px;
  transition: all .35s ease;
}
.btn-line { border: 1px solid var(--wood); color: var(--wood); }
.btn-line:hover { background: var(--wood); color: var(--mist); }
.btn-solid { background: var(--dark); color: var(--mist); }
.btn-solid:hover { background: #49545e; }
.btn .arrow { font-family: var(--en); }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(240,240,240,0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hair-soft);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 78px;
}
.brand { line-height: 1.1; }
.brand .name { font-family: var(--serif); font-size: 19px; font-weight: 600; letter-spacing: 0.06em; }
.brand .tag { font-family: var(--en); font-size: 9.5px; letter-spacing: 0.32em; color: var(--steel); text-transform: uppercase; }
.nav { display: flex; align-items: center; gap: 36px; }
.nav a { font-size: 14px; color: var(--ink); letter-spacing: 0.08em; transition: color .3s; }
.nav a:hover { color: var(--wood); }
.nav .book {
  border: 1px solid var(--wood); color: var(--wood);
  padding: 9px 20px; border-radius: 3px; font-size: 13px;
}
.nav .book:hover { background: var(--wood); color: var(--mist); }
.nav-toggle { display: none; }

/* ============================================================
   HERO
   ============================================================ */
.hero { padding-top: clamp(56px, 9vw, 120px); padding-bottom: clamp(56px, 9vw, 120px); }
.hero .wrap { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(32px,5vw,80px); align-items: center; }
.hero-copy .display { margin-bottom: 32px; }
.hero-copy .lead { margin-bottom: 40px; }
.hero-media { position: relative; }
.hero-media img { width: 100%; aspect-ratio: 4/5; object-fit: cover; border-radius: 4px; }
.hero-media .cap {
  position: absolute; left: 18px; bottom: 18px;
  font-family: var(--en); font-size: 11px; letter-spacing: 0.2em;
  color: var(--mist); background: rgba(43,51,56,0.42);
  padding: 6px 12px; border-radius: 2px; backdrop-filter: blur(2px);
}

/* ============================================================
   STATEMENT 區
   ============================================================ */
.statement { padding: clamp(64px,10vw,140px) 0; text-align: center; }
.statement .q {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(24px,3.2vw,40px); line-height: 1.7; color: var(--ink);
  letter-spacing: 0.05em;
}
.statement .q em { font-style: normal; color: var(--wood); }
.statement .sig {
  margin-top: 36px; font-family: var(--en-serif); font-style: italic;
  font-size: 18px; color: var(--warm);
}
.rule { width: 1px; height: 64px; background: var(--wood); margin: 0 auto 48px; }

/* ============================================================
   四項專長 list
   ============================================================ */
.section { padding: clamp(56px,8vw,112px) 0; }
.section-head { margin-bottom: clamp(40px,5vw,72px); }
.section-head.center { text-align: center; }

.spec-list { border-top: 1px solid var(--hair); }
.spec-row {
  display: grid; grid-template-columns: 88px 1fr auto;
  gap: clamp(16px,3vw,48px); align-items: baseline;
  padding: clamp(28px,3.4vw,44px) 8px;
  border-bottom: 1px solid var(--hair);
  transition: background .35s, padding-left .35s;
}
.spec-row:hover { background: rgba(231,232,234,0.45); padding-left: 20px; }
.spec-no { font-family: var(--en); font-size: 15px; color: var(--wood); letter-spacing: 0.1em; }
.spec-main .en { font-family: var(--en); font-size: 12px; letter-spacing: 0.25em; text-transform: uppercase; color: var(--steel); display: block; margin-bottom: 8px; }
.spec-main .zh { font-family: var(--serif); font-size: clamp(20px,2.2vw,26px); font-weight: 500; }
.spec-desc { color: var(--warm); font-size: 14px; max-width: 22em; text-align: left; }

/* ============================================================
   錯落圖文 feature（philosophy / about）
   ============================================================ */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px,5vw,80px); align-items: center; }
.feature.reverse .feature-media { order: 2; }
.feature-media img { width: 100%; aspect-ratio: 3/2; object-fit: cover; border-radius: 4px; }
.feature-media.tall img { aspect-ratio: 4/5; }
.feature-copy .h-sec { margin-bottom: 28px; }
.feature-copy p { color: var(--warm); font-size: 15px; line-height: 1.95; margin-bottom: 18px; max-width: 34em; }
.feature-copy .more { margin-top: 14px; display: inline-flex; gap: 10px; align-items: center; font-size: 14px; color: var(--wood); letter-spacing: 0.1em; }
.feature-cap { margin-top: 14px; font-size: 12px; color: var(--steel); letter-spacing: 0.06em; }

/* 圖塊小標號 */
.media-index { font-family: var(--en); font-size: 11px; letter-spacing: 0.2em; color: var(--steel); margin-bottom: 12px; }

/* ============================================================
   案例 teaser（首頁）
   ============================================================ */
.cases-teaser .grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: clamp(16px,2vw,28px);
}
.ct-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: 4px; }
.ct-card.offset { margin-top: 48px; }
.ct-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 16px; }
.ct-meta .no { font-family: var(--en); font-size: 12px; color: var(--steel); letter-spacing: 0.12em; }
.ct-meta .tag { font-size: 12px; color: var(--warm); border: 1px solid var(--hair); padding: 3px 11px; border-radius: 2px; }
.ct-title { font-family: var(--serif); font-size: 16px; margin-top: 8px; font-weight: 500; }

/* ============================================================
   CTA 預約
   ============================================================ */
.cta { background: var(--dark); color: var(--mist); text-align: center; padding: clamp(72px,10vw,128px) 0; }
.cta .eyebrow { justify-content: center; }
.cta .eyebrow .en { color: var(--wood); }
.cta h2 { color: var(--mist); font-size: clamp(21px,2.2vw,30px); margin-bottom: 22px; }
.cta p { color: rgba(240,240,240,0.62); margin-bottom: 44px; font-size: 15px; }
.cta .btn-line { border-color: rgba(240,240,240,0.85); color: #F0F0F0; font-weight: 500; }
.cta .btn-line:hover { background: var(--mist); color: var(--dark); border-color: var(--mist); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { background: var(--dark); color: rgba(240,240,240,0.7); padding-top: clamp(56px,7vw,88px); border-top: 1px solid rgba(240,240,240,0.08); }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 56px; }
.footer-brand .name { font-family: var(--serif); font-size: 24px; color: var(--mist); font-weight: 600; letter-spacing: 0.05em; }
.footer-brand .tag { font-family: var(--en); font-size: 10px; letter-spacing: 0.3em; color: var(--steel); text-transform: uppercase; margin-top: 6px; }
.footer-brand p { margin-top: 22px; font-size: 13px; line-height: 1.9; max-width: 24em; color: rgba(240,240,240,0.55); }
.footer-col h4 { font-family: var(--en); font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--steel); margin-bottom: 20px; font-weight: 500; }
.footer-col a, .footer-col p { display: block; font-size: 13.5px; color: rgba(240,240,240,0.7); margin-bottom: 12px; line-height: 1.7; }
/* footer Menu 質感 hover：短橫線滑入＋文字右移轉亮 */
.footer-col a { position: relative; transition: color .35s ease, padding-left .35s ease; }
.footer-col a::before { content: ""; position: absolute; left: 0; top: 0.85em; width: 0; height: 1px; background: rgba(240,240,240,0.85); transition: width .35s ease; }
.footer-col a:hover { color: #F0F0F0; padding-left: 22px; }
.footer-col a:hover::before { width: 14px; }
.footer-col a:hover { color: var(--wood); }
.footer-bottom { border-top: 1px solid rgba(240,240,240,0.08); padding: 24px 0 36px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-bottom span { font-size: 11.5px; color: rgba(240,240,240,0.4); letter-spacing: 0.08em; }
.footer-watermark { font-family: var(--en-serif); font-style: italic; font-size: clamp(40px,9vw,120px); color: rgba(240,240,240,0.05); line-height: 1; padding-bottom: 24px; user-select: none; }

/* ============================================================
   CASES PAGE
   ============================================================ */
.page-head { padding-top: clamp(56px,8vw,104px); padding-bottom: clamp(32px,4vw,56px); }
.page-head .display { font-size: clamp(30px,4.2vw,52px); margin-bottom: 24px; }
.page-head .lead { margin: 0 auto; }
.page-head.center { text-align: center; }
.page-head.center .eyebrow { justify-content: center; }

.filters { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; padding-bottom: clamp(36px,4vw,56px); border-bottom: 1px solid var(--hair); margin-bottom: clamp(36px,4vw,56px); }
.chip {
  font-size: 13.5px; letter-spacing: 0.08em; color: var(--warm);
  padding: 9px 22px; border: 1px solid var(--hair); border-radius: 3px;
  background: transparent; cursor: pointer; transition: all .3s;
}
.chip:hover { border-color: var(--wood); color: var(--wood); }
.chip.active { background: var(--ink); color: var(--mist); border-color: var(--ink); }

.case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: clamp(20px,2.4vw,40px) clamp(16px,2vw,32px); }
.case-card { transition: opacity .4s, transform .4s; }
.case-card .ph { overflow: hidden; border-radius: 4px; background: var(--stone); }
.case-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; transition: transform .6s ease; }
.case-card:hover img { transform: scale(1.04); }
.case-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 16px; }
.case-meta .no { font-family: var(--en); font-size: 12px; color: var(--steel); letter-spacing: 0.14em; }
.case-meta .tag { font-size: 11.5px; color: var(--wood); letter-spacing: 0.05em; }
.case-card .title { font-family: var(--serif); font-size: 17px; font-weight: 500; margin-top: 9px; }
.case-card .cap { font-size: 12.5px; color: var(--warm); margin-top: 6px; line-height: 1.7; }
.case-card.hide { display: none; }

.cases-note { text-align: center; color: var(--steel); font-size: 13px; letter-spacing: 0.1em; margin-top: clamp(48px,6vw,80px); }

/* ============================================================
   RWD
   ============================================================ */
@media (max-width: 880px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-media { max-width: 460px; }
  .feature { grid-template-columns: 1fr; gap: 28px; }
  .feature.reverse .feature-media { order: 0; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .cases-teaser .grid, .case-grid { grid-template-columns: repeat(2,1fr); }
  .ct-card.offset { margin-top: 0; }
}
@media (max-width: 560px) {
  .spec-row { grid-template-columns: 48px 1fr; }
  .spec-desc { grid-column: 2; text-align: left; max-width: none; }
  .cases-teaser .grid, .case-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
}

/* ============================================================
   手機導覽（漢堡＋保留預約）— 2026-07-19 Eric 定案方案1
   ・≤880px：桌面 nav 收起，改「預約小鈕＋漢堡」；點開全螢幕冷灰蓋板
   ・.site-header .nav 特異度(0,2,0)＝刻意蓋過各頁內嵌 .nav{display:flex}
   ・蓋板 z-index 40 < header 50：sticky header 恆在上、漢堡原位變 ✕
   ============================================================ */
.mnav-ctrl { display: none; }
.mnav { display: none; }
@media (max-width: 880px) {
  .site-header .nav { display: none; }
  .mnav-ctrl { display: flex; align-items: center; }
  .mnav-book {
    font-family: var(--sans); font-size: 12.5px; letter-spacing: 0.12em;
    color: var(--wood); border: 1px solid var(--wood); border-radius: 3px; padding: 7px 14px;
  }
  .mnav-toggle {
    display: inline-flex; flex-direction: column; justify-content: center; align-items: flex-end; gap: 7px;
    width: 46px; height: 44px; padding: 0; margin-right: -6px;
    background: none; border: 0; cursor: pointer;
  }
  .mnav-toggle span { display: block; width: 22px; height: 1px; background: var(--ink); transition: transform .3s ease; }
  html.mnav-open .mnav-toggle span:first-child { transform: translateY(4px) rotate(45deg); }
  html.mnav-open .mnav-toggle span:last-child  { transform: translateY(-4px) rotate(-45deg); }

  .mnav {
    display: flex; position: fixed; inset: 0; z-index: 40; background: var(--mist);
    flex-direction: column; justify-content: center; gap: clamp(36px, 7vh, 64px);
    padding: 100px var(--pad) 44px;
    opacity: 0; visibility: hidden; transition: opacity .3s ease, visibility 0s linear .3s;
  }
  html.mnav-open .mnav { opacity: 1; visibility: visible; transition: opacity .3s ease; }
  html.mnav-open body { overflow: hidden; }

  .mnav-links { display: flex; flex-direction: column; gap: clamp(22px, 4.2vh, 34px); }
  .mnav-links a {
    display: flex; align-items: baseline; gap: 16px; color: var(--ink);
    opacity: 0; transform: translateY(10px); transition: opacity .4s ease, transform .4s ease;
  }
  html.mnav-open .mnav-links a { opacity: 1; transform: none; }
  html.mnav-open .mnav-links a:nth-child(1) { transition-delay: .05s; }
  html.mnav-open .mnav-links a:nth-child(2) { transition-delay: .1s; }
  html.mnav-open .mnav-links a:nth-child(3) { transition-delay: .15s; }
  html.mnav-open .mnav-links a:nth-child(4) { transition-delay: .2s; }
  html.mnav-open .mnav-links a:nth-child(5) { transition-delay: .25s; }
  .mnav-links .zh { font-family: var(--serif); font-size: 22px; font-weight: 500; letter-spacing: 0.12em; }
  .mnav-links .en { font-family: var(--en); font-size: 10.5px; letter-spacing: 0.22em; color: var(--steel); text-transform: uppercase; }
  .mnav-links a.now .zh { color: var(--wood); }

  .mnav-foot { border-top: 1px solid var(--hair-soft); padding-top: 28px; }
  .mnav-foot a {
    display: inline-block; font-family: var(--sans); font-size: 13px; letter-spacing: 0.18em;
    color: var(--wood); border: 1px solid var(--wood); border-radius: 3px; padding: 12px 28px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .mnav, .mnav-links a, .mnav-toggle span { transition: none !important; }
}

img { height: auto; }  /* 搭配 width/height 屬性＝只提示比例防 CLS，不鎖高度 */

/* ============================================================
   無障礙（2026-07-19 品質稽核）：鍵盤 focus 可見＋跳至主內容
   只影響鍵盤操作者，滑鼠/觸控視覺零變動
   ============================================================ */
:focus-visible { outline: 1.5px solid var(--wood); outline-offset: 3px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--dark); color: var(--mist); padding: 10px 18px;
  font-size: 13px; letter-spacing: 0.1em;
}
.skip-link:focus { left: 0; }