/* ==========================================================================
   STARBAY MEDIA (灣星文化) — Global Stylesheet v3.1
   品牌色：寶藍 Royal Blue / 白 White / 黃 Yellow（取自灣星文化 logo）。
   China-safe：無 Google Fonts、無 YouTube、無 Google Maps、無 GTM 硬依賴。
   純 Vanilla CSS + JS 動效，可離線運作。為 Starbay 自訂 WordPress 主題打造，
   不依賴任何頁面建構器（Elementor 等）。

   一鍵換色：只需修改下方 :root 內核心變數即可全站換色。
     --sb-royal   主品牌寶藍（CTA、連結、標題重點）
     --sb-yellow  品牌黃（次強調、勳章、光暈、CTA 對比）
     --sb-ink     深底（hero、footer、深色面板）
     --sb-paper   亮底（一般頁面背景，白）

   對比原則（無障礙）：
     寶藍底 → 白字；黃底 → 深藍字；白底 → 深藍字。
     永遠不會出現「淺底淺字」或「深底深字」。
   ========================================================================== */

/* ----- 1. Design Tokens（v3.1 灣星文化品牌） ----- */
:root {
  /* === 核心可換色變數 === */
  --sb-royal: #1E40C8;            /* 寶藍 royal blue — 主品牌色 */
  --sb-royal-hi: #2E54E8;         /* 寶藍 hover（更亮） */
  --sb-royal-deep: #15309A;       /* 寶藍 active / 深 */
  --sb-yellow: #FFC21E;           /* 品牌黃 */
  --sb-yellow-hi: #FFD24D;        /* 黃 hover */
  --sb-ink: #0B1B3F;              /* 深藍墨 — hero / footer 深底 */
  --sb-ink-2: #0E2150;            /* 深藍墨層 2 */
  --sb-paper: #FFFFFF;            /* 白底 */
  --sb-paper-2: #F4F7FF;          /* 淡藍白底（區塊交錯） */
  --sb-paper-3: #EAF0FF;          /* 更深一階淡藍 */

  --sb-radius: 16px;
  --sb-radius-sm: 12px;
  --sb-radius-pill: 999px;
  --sb-ease: cubic-bezier(.2,.8,.2,1);

  /* === 文字色 === */
  --sb-text: #10203F;             /* 主文字（深藍黑），白底 4.5:1+ */
  --sb-text-muted: #4A5C7A;       /* 次文字 */
  --sb-text-faint: #7E8CA6;       /* 輔助文字 */
  --sb-on-royal: #FFFFFF;         /* 寶藍底上的字（白） */
  --sb-on-yellow: #0B1B3F;        /* 黃底上的字（深藍） */
  --sb-on-ink: #EAF0FF;           /* 深底上的字（亮藍白） */
  --sb-on-ink-muted: #A9B8DA;     /* 深底次文字 */

  --sb-border: #D7E0F4;           /* 亮底邊框 */
  --sb-border-strong: #BFCEEF;
  --sb-border-ink: rgba(255,255,255,.16); /* 深底邊框 */

  --sb-danger: #D6334E;
  --sb-success: #1F9D55;

  /* 光暈 glow */
  --sb-royal-glow: rgba(46,84,232,.40);
  --sb-yellow-glow: rgba(255,194,30,.45);

  /* 向後相容別名（舊樣式沿用） */
  --sb-bg: var(--sb-paper);
  --sb-bg-alt: var(--sb-paper-2);
  --sb-surface: var(--sb-paper);
  --sb-surface-hi: var(--sb-paper-3);
  --sb-border-hi: var(--sb-border-strong);
  --sb-accent: var(--sb-royal);
  --sb-accent-hi: var(--sb-royal-hi);
  --sb-gold: var(--sb-yellow);
  --sb-gold-hi: var(--sb-yellow-hi);
  --sb-primary: var(--sb-royal);
  --sb-primary-hi: var(--sb-royal-hi);
  --sb-accent-glow: var(--sb-royal-glow);
  --sb-gold-glow: var(--sb-yellow-glow);

  /* 字體（China-safe：使用系統 / CJK 字體，無 Google Fonts） */
  --sb-font-cjk: "PingFang TC","PingFang HK","Microsoft JhengHei","Heiti TC","Noto Sans CJK TC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --sb-font-sans: -apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,Roboto,"Helvetica Neue",Arial,sans-serif;
  --sb-font: var(--sb-font-cjk), var(--sb-font-sans);

  /* Type scale */
  --sb-fs-hero: clamp(30px, 4.6vw, 52px);
  --sb-fs-h1: clamp(26px, 3.4vw, 38px);
  --sb-fs-h2: clamp(22px, 2.6vw, 30px);
  --sb-fs-h3: 19px;
  --sb-fs-body: 16px;
  --sb-fs-small: 14px;

  /* Layout */
  --sb-container: 1180px;
  --sb-shadow: 0 18px 50px rgba(16,32,63,.12);
  --sb-shadow-sm: 0 8px 24px rgba(16,32,63,.08);
  --sb-gap: 24px;
  --sb-header-h: 0px; /* 由 JS 量測填入，供錨點/避免遮擋 */
}

/* ----- 2. Base / Reset ----- */
* , *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--sb-font);
  font-size: var(--sb-fs-body);
  line-height: 1.7;
  color: var(--sb-text);
  background: var(--sb-paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--sb-royal); text-decoration: none; transition: color .2s var(--sb-ease); }
a:hover { color: var(--sb-royal-hi); }
h1, h2, h3, h4 { margin: 0 0 .55em; line-height: 1.22; font-weight: 800; color: var(--sb-text); letter-spacing: -.01em; }
h1 { font-size: var(--sb-fs-h1); }
h2 { font-size: var(--sb-fs-h2); }
h3 { font-size: var(--sb-fs-h3); }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.25em; margin: 0 0 1em; }
li { margin-bottom: .35em; }
strong { font-weight: 700; }

.sb-container { max-width: var(--sb-container); margin: 0 auto; padding: 0 20px; }

.screen-reader-text {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.screen-reader-text:focus {
  position: fixed; top: 8px; left: 8px; z-index: 100000; width: auto; height: auto;
  clip: auto; padding: 10px 16px; background: var(--sb-royal); color: #fff; border-radius: 8px;
}

/* ----- 3. Sections ----- */
.sb-page { display: block; }
.sb-section { padding: 64px 0; position: relative; }
.sb-section--compact { padding: 36px 0; }
.sb-section--alt { background: var(--sb-paper-2); }
.sb-section--surface { background: var(--sb-paper-3); }
.sb-section--ink { background: var(--sb-ink); color: var(--sb-on-ink); }
.sb-section--ink h1,.sb-section--ink h2,.sb-section--ink h3,.sb-section--ink h4 { color: #fff; }
.sb-section--ink p { color: var(--sb-on-ink-muted); }

.sb-section-head { max-width: 820px; margin-bottom: 36px; }
.sb-section-head p { color: var(--sb-text-muted); }

.sb-eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: .04em; text-transform: uppercase;
  color: var(--sb-royal); margin-bottom: 12px; font-weight: 700;
}
.sb-section--ink .sb-eyebrow { color: var(--sb-yellow); }
.sb-lead { font-size: clamp(17px,1.6vw,20px); color: var(--sb-text-muted); line-height: 1.75; }

/* ----- 4. Buttons（對比安全：寶藍底白字 / 黃底深藍字） ----- */
.sb-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; min-width: 48px; padding: 13px 26px;
  border-radius: var(--sb-radius-pill); font-weight: 700; font-size: 15px;
  line-height: 1.15; text-align: center; cursor: pointer; border: 2px solid transparent;
  transition: transform .15s var(--sb-ease), background .2s var(--sb-ease), color .2s var(--sb-ease), box-shadow .2s var(--sb-ease), border-color .2s var(--sb-ease);
  white-space: nowrap;
}
.sb-btn:focus-visible { outline: 3px solid var(--sb-yellow); outline-offset: 2px; }

.sb-btn--primary { background: var(--sb-royal); color: var(--sb-on-royal); border-color: var(--sb-royal); }
.sb-btn--primary:hover { background: var(--sb-royal-hi); border-color: var(--sb-royal-hi); color: #fff; transform: translateY(-2px); box-shadow: 0 12px 30px -8px var(--sb-royal-glow); }

.sb-btn--gold, .sb-btn--yellow { background: var(--sb-yellow); color: var(--sb-on-yellow); border-color: var(--sb-yellow); }
.sb-btn--gold:hover, .sb-btn--yellow:hover { background: var(--sb-yellow-hi); border-color: var(--sb-yellow-hi); color: var(--sb-on-yellow); transform: translateY(-2px); box-shadow: 0 12px 30px -8px var(--sb-yellow-glow); }

/* ghost：依背景自動取色，亮底深藍字 / 深底白字 */
.sb-btn--ghost { background: transparent; color: var(--sb-royal); border-color: var(--sb-border-strong); }
.sb-btn--ghost:hover { border-color: var(--sb-royal); color: var(--sb-royal-hi); background: var(--sb-paper-2); }
.sb-section--ink .sb-btn--ghost, .sb-hero .sb-btn--ghost { color: #fff; border-color: rgba(255,255,255,.5); }
.sb-section--ink .sb-btn--ghost:hover, .sb-hero .sb-btn--ghost:hover { background: rgba(255,255,255,.12); border-color: #fff; color: #fff; }

.sb-btn--wa { background: #25D366; color: #04261A; border-color: #25D366; }
.sb-btn--wa:hover { background: #2FE07A; border-color: #2FE07A; color: #04261A; transform: translateY(-2px); }

/* ----- 5. Hero（修正比例：不過高、H1 較小可讀、line-height 佳、微光） ----- */
.sb-hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--sb-ink) 0%, var(--sb-ink-2) 55%, var(--sb-royal-deep) 120%);
  color: var(--sb-on-ink);
  padding: clamp(56px, 8vw, 96px) 0 clamp(48px, 7vw, 84px);
}
.sb-hero::before { /* 柔光暈 */
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(60% 50% at 18% 22%, rgba(46,84,232,.45) 0%, transparent 60%),
    radial-gradient(46% 44% at 88% 78%, rgba(255,194,30,.18) 0%, transparent 62%);
}
.sb-hero__inner {
  position: relative; z-index: 2; display: grid; gap: clamp(28px, 4vw, 52px);
  grid-template-columns: 1fr; align-items: center;
}
.sb-hero__copy { max-width: 720px; }
.sb-hero .sb-eyebrow { color: var(--sb-yellow); }
.sb-hero h1 {
  color: #fff; font-size: var(--sb-fs-hero); line-height: 1.1; letter-spacing: -.02em;
  max-width: 18ch;
  text-shadow: 0 0 28px rgba(120,160,255,.35), 0 2px 14px rgba(0,0,0,.28); /* 微光 glow */
}
.sb-hero p.sb-lead { color: var(--sb-on-ink-muted); margin: 16px 0 30px; max-width: 640px; }
.sb-hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }
.sb-hero__media {
  position: relative; border-radius: var(--sb-radius); overflow: hidden;
  border: 1px solid var(--sb-border-ink); background: rgba(255,255,255,.04);
  box-shadow: 0 30px 70px rgba(0,0,0,.4);
  aspect-ratio: 16 / 10; /* 固定比例避免過高 */
}
.sb-hero__image { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.sb-hero__image--desktop { display: block; }
.sb-hero__image--mobile { display: none; }

/* CSS 動態漸層／粒子層（取代 YouTube 迴圈影片的氛圍） */
.sb-motion-bg { position: absolute; inset: 0; z-index: 1; overflow: hidden; pointer-events: none; }
.sb-motion-bg .sb-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 58px 58px;
  -webkit-mask-image: radial-gradient(80% 60% at 50% 38%, #000 30%, transparent 80%);
  mask-image: radial-gradient(80% 60% at 50% 38%, #000 30%, transparent 80%);
  opacity: .5;
}
.sb-motion-bg::after { /* 緩慢漂移光帶 */
  content: ""; position: absolute; width: 60%; height: 200%; top: -50%; left: -20%;
  background: linear-gradient(115deg, transparent 40%, rgba(255,194,30,.10) 50%, transparent 60%);
  animation: sb-sheen 14s linear infinite; will-change: transform;
}
@keyframes sb-sheen { from { transform: translateX(-20%); } to { transform: translateX(160%); } }
@media (prefers-reduced-motion: reduce) { .sb-motion-bg::after { animation: none; } }

/* 自架 MP4（可選；放 <video class="sb-hero-video">） */
.sb-hero-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0; opacity: .35; }

/* Hero 雙欄（當有圖片時，desktop 並排） */
@media (min-width: 920px) {
  .sb-hero--split .sb-hero__inner { grid-template-columns: 1.05fr .95fr; }
}

/* ----- 6. Cards / Grid ----- */
.sb-grid { display: grid; gap: var(--sb-gap); }
.sb-grid--3 { grid-template-columns: 1fr; }
.sb-grid--2 { grid-template-columns: 1fr; }
.sb-grid--cards { grid-template-columns: 1fr; }
@media (min-width: 640px) { .sb-grid--3, .sb-grid--cards { grid-template-columns: repeat(2,1fr); } .sb-grid--2 { grid-template-columns: repeat(2,1fr); } }
@media (min-width: 980px) { .sb-grid--3, .sb-grid--cards { grid-template-columns: repeat(3,1fr); } }

.sb-card {
  display: flex; flex-direction: column; padding: 26px;
  background: var(--sb-paper); border: 1px solid var(--sb-border); border-radius: var(--sb-radius);
  box-shadow: var(--sb-shadow-sm); transition: transform .2s var(--sb-ease), box-shadow .2s var(--sb-ease), border-color .2s var(--sb-ease);
}
.sb-card:hover { transform: translateY(-4px); box-shadow: var(--sb-shadow); border-color: var(--sb-border-strong); }
.sb-card h3 { font-size: 19px; }
.sb-card p { color: var(--sb-text-muted); }
.sb-card__media, .sb-card__image { border-radius: var(--sb-radius-sm); overflow: hidden; margin-bottom: 16px; }
.sb-card__media img, .sb-card__image { aspect-ratio: 16/9; object-fit: cover; width: 100%; }
.sb-card__more { margin-top: auto; padding-top: 12px; font-weight: 700; color: var(--sb-royal); }
.sb-card__more:hover { color: var(--sb-royal-hi); }
.sb-card__meta { font-size: 13px; color: var(--sb-text-faint); margin-bottom: 6px; }
.sb-card__title { font-size: 19px; }

/* Case card */
.sb-case-card { display: flex; flex-direction: column; background: var(--sb-paper); border: 1px solid var(--sb-border); border-radius: var(--sb-radius); overflow: hidden; box-shadow: var(--sb-shadow-sm); transition: transform .2s var(--sb-ease), box-shadow .2s var(--sb-ease), border-color .2s var(--sb-ease); }
.sb-case-card:hover { transform: translateY(-4px); box-shadow: var(--sb-shadow); border-color: var(--sb-border-strong); }
.sb-case-card__img img { aspect-ratio: 16/9; object-fit: cover; width: 100%; }
.sb-case-card__body { padding: 22px; display: flex; flex-direction: column; gap: 8px; }
.sb-case-card__tag { display: inline-block; align-self: flex-start; padding: 3px 10px; font-size: 12px; font-weight: 700; border-radius: 999px; background: var(--sb-paper-3); color: var(--sb-royal); }
.sb-case-card__body h3 { font-size: 18px; margin: 4px 0; }
.sb-case-card__body h3 a:hover { color: var(--sb-royal-hi); }
.sb-case-card__meta { display: flex; flex-wrap: wrap; gap: 6px; }
.sb-case-card__meta span { font-size: 12px; padding: 2px 8px; border-radius: 6px; background: var(--sb-paper-2); color: var(--sb-text-muted); border: 1px solid var(--sb-border); }
.sb-case-card__body p { color: var(--sb-text-muted); font-size: 14px; margin: 4px 0 0; }

/* Stats */
.sb-stats-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
@media (min-width: 768px) { .sb-stats-grid { grid-template-columns: repeat(4,1fr); } }
.sb-stat { text-align: center; padding: 24px 12px; background: var(--sb-paper); border: 1px solid var(--sb-border); border-radius: var(--sb-radius); }
.sb-stat__num { font-size: clamp(34px,5vw,48px); font-weight: 800; color: var(--sb-royal); line-height: 1; }
.sb-stat__label { margin-top: 8px; font-size: 14px; color: var(--sb-text-muted); }

/* ----- 7. CTA band ----- */
.sb-cta-band {
  position: relative; overflow: hidden; text-align: center; padding: clamp(48px,7vw,72px) 24px;
  background: linear-gradient(135deg, var(--sb-royal) 0%, var(--sb-royal-deep) 100%);
  color: #fff;
}
.sb-cta-band::before {
  content: ""; position: absolute; inset: 0; background-image: var(--sb-cta-bg, none);
  background-size: cover; background-position: center; opacity: .18; mix-blend-mode: luminosity;
}
.sb-cta-band > * { position: relative; z-index: 1; }
.sb-cta-band h2 { color: #fff; margin-bottom: 10px; }
.sb-cta-band p { color: rgba(255,255,255,.85); margin-bottom: 26px; }
.sb-cta-band .sb-btn { margin: 6px; }
.sb-cta-band .sb-btn--primary { background: var(--sb-yellow); color: var(--sb-on-yellow); border-color: var(--sb-yellow); }
.sb-cta-band .sb-btn--primary:hover { background: var(--sb-yellow-hi); border-color: var(--sb-yellow-hi); color: var(--sb-on-yellow); }

/* ----- 8. FAQ ----- */
.sb-faq { display: grid; gap: 14px; max-width: 880px; }
.sb-faq__item { border: 1px solid var(--sb-border); border-radius: var(--sb-radius-sm); background: var(--sb-paper); overflow: hidden; }
.sb-faq__item h3 { margin: 0; padding: 18px 22px; font-size: 17px; cursor: pointer; position: relative; padding-right: 50px; }
.sb-faq__item h3::after { content: "+"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%); color: var(--sb-royal); font-weight: 700; font-size: 22px; transition: transform .2s var(--sb-ease); }
.sb-faq__item[data-open="true"] h3::after { content: "−"; }
.sb-faq__body { padding: 0 22px; max-height: 0; overflow: hidden; transition: max-height .3s var(--sb-ease), padding .3s var(--sb-ease); color: var(--sb-text-muted); }
.sb-faq__item[data-open="true"] .sb-faq__body { padding: 0 22px 20px; max-height: 600px; }
.sb-faq__item:not([data-js-ready]) .sb-faq__body { max-height: none; padding: 0 22px 20px; } /* 無 JS：全展開 */

/* ----- 9. Gallery / inline media ----- */
.sb-gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px,1fr)); gap: 16px; }
.sb-gallery__item { margin: 0; border-radius: var(--sb-radius-sm); overflow: hidden; border: 1px solid var(--sb-border); }
.sb-gallery__item img { aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.sb-gallery__item figcaption { padding: 10px 12px; font-size: 13px; color: var(--sb-text-muted); background: var(--sb-paper-2); }
.sb-inline-media { border-radius: var(--sb-radius); overflow: hidden; border: 1px solid var(--sb-border); margin: 24px 0; }

/* ----- 10. Reveal animation ----- */
.sb-reveal { opacity: 1; transform: none; }
html.sb-js-ready .sb-reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s var(--sb-ease), transform .6s var(--sb-ease); }
html.sb-js-ready .sb-reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html.sb-js-ready .sb-reveal { opacity: 1; transform: none; } }

/* ----- 10b. Rich content / case & service layout helpers ----- */
.sb-rich-content { font-size: 17px; line-height: 1.85; color: var(--sb-text); }
.sb-rich-content h2 { margin-top: 1.4em; }
.sb-rich-content h3 { margin-top: 1.2em; }
.sb-rich-content a { color: var(--sb-royal); text-decoration: underline; text-underline-offset: 3px; }
.sb-rich-content img { border-radius: var(--sb-radius-sm); margin: 24px 0; }
.sb-rich-content blockquote { margin: 24px 0; padding: 16px 22px; border-left: 4px solid var(--sb-royal); background: var(--sb-paper-2); border-radius: 0 12px 12px 0; color: var(--sb-text-muted); }

.sb-media-copy { display: grid; gap: 32px; align-items: center; }
@media (min-width: 860px) { .sb-media-copy { grid-template-columns: 1.05fr .95fr; } }

.sb-list-check { list-style: none; padding: 0; display: grid; gap: 12px; }
.sb-list-check li { position: relative; padding-left: 32px; color: var(--sb-text); }
.sb-list-check li::before { content: ""; position: absolute; left: 0; top: 3px; width: 20px; height: 20px; border-radius: 6px; background: var(--sb-royal); -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='white' d='M9 16.2l-3.5-3.5L4 14.2 9 19.2 20 8.2l-1.5-1.5z'/%3E%3C/svg%3E") center/contain no-repeat; mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='white' d='M9 16.2l-3.5-3.5L4 14.2 9 19.2 20 8.2l-1.5-1.5z'/%3E%3C/svg%3E") center/contain no-repeat; }

.sb-note { margin-top: 24px; padding: 16px 20px; border: 1px dashed var(--sb-border-strong); border-radius: var(--sb-radius-sm); background: var(--sb-paper-2); color: var(--sb-text-muted); font-size: 14px; }

.sb-case-meta { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px,1fr)); gap: 14px; }
.sb-case-meta > div { padding: 16px 18px; border: 1px solid var(--sb-border); border-radius: var(--sb-radius-sm); background: var(--sb-paper); }
.sb-case-meta span { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--sb-text-faint); margin-bottom: 4px; }
.sb-case-meta strong { color: var(--sb-text); font-size: 15px; }

.sb-tag-soon { display: inline-block; margin-left: 6px; padding: 2px 8px; font-size: 11px; font-weight: 700; border-radius: 999px; background: var(--sb-yellow); color: var(--sb-on-yellow); vertical-align: middle; }

.sb-card__excerpt { color: var(--sb-text-muted); font-size: 14px; }
.sb-card__link { display: flex; flex-direction: column; height: 100%; color: inherit; }
.sb-card__link:hover { color: inherit; }

/* ----- 11. Pagination / empty ----- */
.sb-pagination { margin-top: 40px; display: flex; justify-content: center; }
.sb-pagination a, .sb-pagination .current { display: inline-flex; min-width: 42px; min-height: 42px; align-items: center; justify-content: center; padding: 8px 12px; border-radius: 10px; border: 1px solid var(--sb-border); margin: 0 4px; }
.sb-pagination .current { background: var(--sb-royal); color: #fff; border-color: var(--sb-royal); }
.sb-empty { text-align: center; max-width: 620px; margin: 60px auto; }

/* ==========================================================================
   12. HEADER（乾淨單一系統：marquee + logo + 選單；無重疊、無閃動）
   ========================================================================== */
.sb-header {
  position: sticky; top: 0; left: 0; right: 0; z-index: 9990; width: 100%;
  background: rgba(255,255,255,.92); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--sb-border);
  box-shadow: 0 6px 24px rgba(16,32,63,.06);
}

/* News ticker / marquee */
.sb-news-ticker {
  width: 100%; overflow: hidden; background: var(--sb-ink); color: #fff;
  border-bottom: 1px solid var(--sb-border-ink);
}
.sb-news-ticker__track {
  display: flex; align-items: center; gap: 40px; width: max-content; padding: 7px 18px;
  white-space: nowrap; animation: sb-marquee 36s linear infinite; will-change: transform;
}
.sb-news-ticker__track span { display: inline-flex; align-items: center; font-size: 13px; line-height: 1; color: #fff; }
.sb-news-ticker__track span::before { content: ""; width: 7px; height: 7px; margin-right: 10px; border-radius: 99px; background: var(--sb-yellow); box-shadow: 0 0 12px var(--sb-yellow-glow); }
.sb-news-ticker:hover .sb-news-ticker__track { animation-play-state: paused; }
@keyframes sb-marquee { from { transform: translate3d(0,0,0); } to { transform: translate3d(-50%,0,0); } }
@media (prefers-reduced-motion: reduce) { .sb-news-ticker__track { animation: none; } }

.sb-header__inner {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 20px;
  width: min(100%, var(--sb-container)); margin: 0 auto; padding: 12px 20px;
}

/* Logo */
.sb-logo { display: inline-flex; align-items: center; gap: 11px; color: var(--sb-text); text-decoration: none; min-width: max-content; }
.sb-logo__img { height: 42px; width: auto; display: block; }
.sb-logo__mark { display: grid; place-items: center; width: 42px; height: 42px; flex: 0 0 42px; border-radius: 13px; background: linear-gradient(135deg, var(--sb-royal), var(--sb-royal-deep)); }
.sb-logo__mark svg { width: 27px; height: 27px; fill: none; stroke: var(--sb-yellow); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.sb-logo__text { display: grid; gap: 1px; line-height: 1.05; }
.sb-logo__text strong { font-size: 18px; color: var(--sb-text); letter-spacing: .01em; }
.sb-logo__text small { font-size: 11px; color: var(--sb-text-muted); letter-spacing: .14em; }

/* Nav */
.sb-nav { display: flex; align-items: center; justify-content: center; gap: 2px; width: 100%; }
.sb-nav > a, .sb-nav__group > a {
  display: inline-flex; align-items: center; justify-content: center; min-height: 42px;
  padding: 8px 13px; border-radius: var(--sb-radius-pill); color: var(--sb-text);
  font-size: 15px; font-weight: 600; white-space: nowrap; text-decoration: none;
}
.sb-nav > a:hover, .sb-nav__group > a:hover { background: var(--sb-royal); color: #fff; }
.sb-nav__group { position: relative; }
.sb-nav__group > a::after { content: "⌄"; margin-left: 5px; font-size: 12px; }

/* Dropdown — 用 padding 橋接，避免 hover 抖動/閃退 */
.sb-nav__dropdown {
  display: block; opacity: 0; visibility: hidden; transform: translateY(6px);
  position: absolute; top: 100%; left: 0; margin-top: 0; padding-top: 12px;
  min-width: 280px; z-index: 9999; pointer-events: none;
  transition: opacity .16s var(--sb-ease), transform .16s var(--sb-ease), visibility .16s;
}
.sb-nav__dropdown::before { /* 透明橋接帶，連接觸發鈕與選單，消除 gap 造成的閃動 */
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 14px;
}
.sb-nav__dropdown-inner {
  display: grid; gap: 3px; padding: 10px; border-radius: 14px; background: #fff;
  border: 1px solid var(--sb-border); box-shadow: 0 24px 60px rgba(16,32,63,.18);
}
.sb-nav__group:hover .sb-nav__dropdown, .sb-nav__group:focus-within .sb-nav__dropdown {
  opacity: 1; visibility: visible; transform: translateY(0); pointer-events: auto;
}
.sb-nav__dropdown a { display: flex; align-items: center; min-height: 42px; padding: 9px 12px; border-radius: 10px; color: var(--sb-text); font-size: 14px; line-height: 1.35; }
.sb-nav__dropdown a:hover { background: var(--sb-paper-2); color: var(--sb-royal); }

/* Header right side */
.sb-header__cta { display: inline-flex; align-items: center; justify-content: flex-end; gap: 10px; min-width: max-content; }
.sb-lang { display: inline-flex; align-items: center; gap: 2px; padding: 3px; border-radius: var(--sb-radius-pill); border: 1px solid var(--sb-border); }
.sb-lang a { display: inline-flex; align-items: center; justify-content: center; min-width: 34px; min-height: 34px; padding: 4px 8px; border-radius: var(--sb-radius-pill); color: var(--sb-text-muted); font-size: 13px; }
.sb-lang a:hover { color: var(--sb-royal); }
.sb-lang a[aria-current="true"] { background: var(--sb-royal); color: #fff; }

.sb-header__book { padding: 11px 20px; min-height: 44px; }
.sb-logo__fallback { align-items: center; gap: 11px; }

.sb-mobile-toggle {
  display: none; align-items: center; justify-content: center; width: 46px; height: 46px;
  border-radius: 12px; border: 1px solid var(--sb-border-strong); background: var(--sb-paper); cursor: pointer;
}
.sb-mobile-toggle span { display: block; width: 20px; height: 2px; margin: 3px 0; border-radius: 99px; background: var(--sb-text); transition: transform .2s var(--sb-ease), opacity .2s; }
.sb-mobile-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.sb-mobile-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.sb-mobile-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ==========================================================================
   13. FOOTER
   ========================================================================== */
.sb-footer { background: var(--sb-ink); color: var(--sb-on-ink); padding: 72px 0 32px; }
.sb-footer__cta {
  display: grid; grid-template-columns: 1fr; gap: 20px; margin-bottom: 48px; padding: 30px;
  border-radius: 22px; border: 1px solid var(--sb-border-ink);
  background: linear-gradient(135deg, rgba(46,84,232,.22), rgba(255,194,30,.10));
  align-items: center;
}
@media (min-width: 768px) { .sb-footer__cta { grid-template-columns: 1fr auto; } }
.sb-footer__cta h2 { color: #fff; margin: 0; max-width: 720px; font-size: clamp(22px,2.6vw,32px); }
.sb-footer__cta .sb-eyebrow { color: var(--sb-yellow); }
.sb-footer__cols { display: grid; grid-template-columns: 1fr; gap: 32px; }
@media (min-width: 600px) { .sb-footer__cols { grid-template-columns: repeat(2,1fr); } }
@media (min-width: 1000px) { .sb-footer__cols { grid-template-columns: minmax(260px,1.5fr) repeat(3,1fr); } }
.sb-footer__brand .sb-logo__text strong, .sb-footer__brand .sb-logo__text small { color: #fff; }
.sb-footer__brand .sb-logo__img { filter: brightness(0) invert(1); }
.sb-footer h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.sb-footer p, .sb-footer li { color: var(--sb-on-ink-muted); }
.sb-footer a { color: var(--sb-on-ink-muted); display: block; padding: 4px 0; min-height: 32px; }
.sb-footer a:hover { color: var(--sb-yellow); }
.sb-footer__brand p a { display: inline; padding: 0; }
.sb-footer__bottom { border-top: 1px solid var(--sb-border-ink); margin-top: 44px; padding-top: 20px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 13px; color: var(--sb-on-ink-muted); }
.sb-footer__legal { display: inline-flex; gap: 16px; flex-wrap: wrap; }
.sb-footer__legal a { display: inline; padding: 0; }

/* ==========================================================================
   14. FLOATING CONTACT（品牌氣泡 → 展開 WhatsApp / WeChat）
   ========================================================================== */
.sb-floating { position: fixed; right: 18px; bottom: 18px; z-index: 9998; display: flex; flex-direction: column; align-items: flex-end; gap: 12px; }

/* 展開選項（預設隱藏，點主氣泡展開） */
.sb-floating__options { display: flex; flex-direction: column; align-items: flex-end; gap: 10px; opacity: 0; transform: translateY(10px) scale(.96); pointer-events: none; transition: opacity .22s var(--sb-ease), transform .22s var(--sb-ease); }
.sb-floating[data-open="true"] .sb-floating__options { opacity: 1; transform: none; pointer-events: auto; }

.sb-floating__opt {
  display: inline-flex; align-items: center; gap: 10px; height: 48px; padding: 0 16px 0 12px;
  border-radius: var(--sb-radius-pill); font-weight: 700; font-size: 14px; text-decoration: none;
  border: 1px solid transparent; box-shadow: 0 10px 26px rgba(16,32,63,.22); cursor: pointer;
}
.sb-floating__opt-icon { display: grid; place-items: center; width: 30px; height: 30px; flex: 0 0 30px; }
.sb-floating__opt-icon svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.sb-floating__opt--wa { background: #25D366; color: #04261A; }
.sb-floating__opt--wa:hover { background: #2FE07A; }
.sb-floating__opt--wc { background: #fff; color: var(--sb-ink); border-color: var(--sb-border); }
.sb-floating__opt--wc:hover { background: var(--sb-paper-2); }

/* 主氣泡（品牌寶藍） */
.sb-floating__bubble {
  position: relative; display: grid; place-items: center; width: 60px; height: 60px; min-width: 60px; min-height: 60px;
  border-radius: 999px; border: none; cursor: pointer;
  background: linear-gradient(135deg, var(--sb-royal), var(--sb-royal-deep)); color: #fff;
  box-shadow: 0 12px 30px rgba(30,64,200,.4);
  transition: transform .2s var(--sb-ease), box-shadow .2s var(--sb-ease);
}
.sb-floating__bubble:hover { transform: scale(1.05); }
.sb-floating__bubble:focus-visible { outline: 3px solid var(--sb-yellow); outline-offset: 2px; }
.sb-floating__bubble svg { width: 30px; height: 30px; fill: none; stroke: var(--sb-yellow); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; transition: opacity .2s, transform .2s; }
.sb-floating__bubble .sb-floating__close { position: absolute; opacity: 0; transform: rotate(-45deg); stroke: #fff; }
.sb-floating[data-open="true"] .sb-floating__bubble .sb-floating__mark { opacity: 0; transform: rotate(45deg); }
.sb-floating[data-open="true"] .sb-floating__bubble .sb-floating__close { opacity: 1; transform: rotate(0); }
.sb-floating__bubble::after { /* 微脈動光圈 */
  content: ""; position: absolute; inset: -4px; border-radius: 999px; border: 2px solid rgba(255,194,30,.5);
  animation: sb-pulse 2.6s var(--sb-ease) infinite; pointer-events: none;
}
@keyframes sb-pulse { 0% { transform: scale(.9); opacity: .8; } 70% { transform: scale(1.25); opacity: 0; } 100% { opacity: 0; } }
.sb-floating[data-open="true"] .sb-floating__bubble::after { animation: none; }
@media (prefers-reduced-motion: reduce) { .sb-floating__bubble::after { animation: none; } }

.sb-floating__top { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 999px; background: #fff; color: var(--sb-royal); border: 1px solid var(--sb-border); cursor: pointer; box-shadow: var(--sb-shadow-sm); opacity: 0; pointer-events: none; transition: opacity .25s var(--sb-ease); font-size: 18px; }
.sb-floating__top.is-visible { opacity: 1; pointer-events: auto; }

/* WeChat modal */
.sb-modal { display: none; position: fixed; inset: 0; z-index: 10000; background: rgba(11,27,63,.6); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); align-items: center; justify-content: center; padding: 20px; }
.sb-modal[data-open="true"] { display: flex; }
.sb-modal__panel { background: #fff; color: var(--sb-text); border-radius: var(--sb-radius); padding: 28px; max-width: 320px; text-align: center; box-shadow: var(--sb-shadow); }
.sb-modal__panel h3 { margin: 0 0 14px; }
.sb-modal__panel p { color: var(--sb-text-muted); margin: 14px 0 0; font-size: 14px; }
.sb-modal__panel img { margin: 0 auto; max-width: 220px; border-radius: 12px; }
.sb-modal__close { margin-top: 16px; background: var(--sb-royal); color: #fff; border: none; padding: 10px 22px; border-radius: 999px; cursor: pointer; font-weight: 700; }
.sb-wechat-placeholder { display: grid; place-items: center; width: 220px; height: 220px; margin: 0 auto; border-radius: 14px; background: var(--sb-paper-2); color: var(--sb-text-muted); border: 1px dashed var(--sb-border-strong); font-size: 14px; text-align: center; padding: 16px; }

/* ==========================================================================
   15. COMET / LIGHT-PARTICLE MOUSE EFFECT（canvas，效能友善）
   ========================================================================== */
#sb-comet-canvas { position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 9997; }
@media (hover: none) and (pointer: coarse) { #sb-comet-canvas { display: none; } } /* 觸控裝置關閉 */
@media (prefers-reduced-motion: reduce) { #sb-comet-canvas { display: none !important; } }

/* ==========================================================================
   16. RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
  .sb-header__inner { grid-template-columns: auto 1fr auto; }
  .sb-mobile-toggle { display: inline-flex; grid-column: 3; justify-self: end; }
  .sb-header__cta .sb-lang { display: none; }
  .sb-nav {
    display: none; grid-column: 1 / -1; flex-direction: column; align-items: stretch;
    width: 100%; margin-top: 10px; padding: 12px; border-radius: 16px;
    background: var(--sb-paper-2); border: 1px solid var(--sb-border);
  }
  .sb-nav[data-open="true"] { display: flex; }
  .sb-nav > a, .sb-nav__group > a { justify-content: flex-start; width: 100%; padding: 13px 14px; border-radius: 10px; }
  .sb-nav__group { width: 100%; }
  .sb-nav__dropdown { position: static; opacity: 1; visibility: visible; transform: none; pointer-events: auto; padding-top: 0; min-width: 0; margin: 2px 0 6px 12px; }
  .sb-nav__dropdown-inner { box-shadow: none; background: transparent; border: none; padding: 4px; }
  .sb-nav__dropdown::before { display: none; }
}

@media (max-width: 600px) {
  .sb-section { padding: 48px 0; }
  .sb-header__inner { padding: 9px 14px; gap: 10px; }
  .sb-logo__img { height: 36px; }
  .sb-logo__mark { width: 38px; height: 38px; flex-basis: 38px; }
  .sb-logo__text strong { font-size: 16px; }
  .sb-logo__text small { font-size: 10px; }
  .sb-header__book { display: none; }
  .sb-hero__actions { display: grid; grid-template-columns: 1fr; }
  .sb-hero__actions .sb-btn { width: 100%; }
  .sb-hero__media { aspect-ratio: 4/3; }
  .sb-hero__image--desktop { display: none; }
  .sb-hero__image--mobile { display: block; }
  .sb-footer { padding: 48px 0 110px; }
  .sb-footer__cta .sb-btn { width: 100%; }
  .sb-floating { right: 12px; bottom: 14px; }
  /* 有聯絡表單頁面：浮動鈕讓位給送出鈕 */
  .sb-has-form .sb-floating { bottom: 12px; }
}

@media print {
  .sb-floating, .sb-header, .sb-footer, .sb-cta-band, #sb-comet-canvas { display: none !important; }
  body { color: #000; background: #fff; }
}

/* 全站動效關閉 */
body.no-anim *, html.no-anim * { animation: none !important; transition: none !important; }