/* ==================================================
   百變花樣電商設計｜電商網站健檢知識區共用樣式
   適用：/ecommerce-checkup/ 下所有 Hub、文章、Checklist 頁面
================================================== */
:root{
  --ec-bg:#ffffff;
  --ec-soft:#f7f5f3;
  --ec-soft-2:#fbfaf9;
  --ec-ink:#1a1a1a;
  --ec-text:#565656;
  --ec-muted:#7b7b7b;
  --ec-line:#e8e3df;
  --ec-accent:#b11226;
  --ec-accent-dark:#8f0d1f;
  --ec-dark:#111216;
  --ec-radius:16px;
  --ec-shadow:0 18px 48px rgba(17,17,17,.07);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ec-ink);
  background:var(--ec-bg);
  font-family:"Noto Sans TC",-apple-system,BlinkMacSystemFont,"PingFang TC","Microsoft JhengHei",Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit}
img{max-width:100%;height:auto}
.ec-skip-link{position:fixed;left:16px;top:-80px;z-index:20000;padding:12px 18px;border-radius:8px;background:#fff;color:#111;box-shadow:var(--ec-shadow)}
.ec-skip-link:focus{top:16px}
.ec-container{width:min(1120px,calc(100% - 40px));margin:0 auto}
.ec-article-container{width:min(980px,calc(100% - 40px));margin:0 auto}

/* 健檢知識區共用次選單 */
.ec-section-nav{position:sticky;top:0;z-index:8500;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-bottom:1px solid var(--ec-line)}
.ec-section-nav__inner{min-height:58px;display:flex;align-items:center;gap:12px;overflow-x:auto;scrollbar-width:none}
.ec-section-nav__inner::-webkit-scrollbar{display:none}
.ec-section-nav__brand{flex:0 0 auto;font-size:14px;font-weight:800;color:var(--ec-ink);text-decoration:none;white-space:nowrap;margin-right:8px}
.ec-section-nav__links{display:flex;align-items:center;gap:4px;min-width:max-content}
.ec-section-nav__link{display:inline-flex;align-items:center;min-height:40px;padding:8px 13px;border-radius:999px;color:#626262;font-size:14px;font-weight:600;text-decoration:none;white-space:nowrap}
.ec-section-nav__link:hover{background:var(--ec-soft);color:var(--ec-ink);text-decoration:none}
.ec-section-nav__link.is-current{background:#f3e8ea;color:var(--ec-accent)}
.ec-section-nav__cta{background:var(--ec-accent);color:#fff!important}
.ec-section-nav__cta:hover{background:var(--ec-accent-dark);color:#fff}

/* Breadcrumb */
.ec-breadcrumb{padding:24px 0 0;color:var(--ec-muted);font-size:13px;line-height:1.7}
.ec-breadcrumb ol{display:flex;flex-wrap:wrap;gap:7px;margin:0;padding:0;list-style:none}
.ec-breadcrumb li:not(:last-child)::after{content:"/";margin-left:7px;color:#b5b5b5}
.ec-breadcrumb a{text-decoration:none;color:var(--ec-muted)}
.ec-breadcrumb a:hover{color:var(--ec-accent)}

/* Article hero */
.ec-article-hero{padding:54px 0 46px;border-bottom:1px solid var(--ec-line);background:linear-gradient(180deg,#fff 0%,#fbfaf9 100%)}
.ec-kicker{margin:0 0 14px;color:var(--ec-accent);font-size:13px;font-weight:800;letter-spacing:.12em}
.ec-article-hero h1{max-width:900px;margin:0;font-size:clamp(34px,5vw,54px);line-height:1.25;letter-spacing:-.03em;font-weight:850;color:var(--ec-ink)}
.ec-article-deck{max-width:790px;margin:22px 0 0;color:var(--ec-text);font-size:clamp(17px,2vw,20px);line-height:1.9}
.ec-article-meta{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:24px;color:var(--ec-muted);font-size:13px}

/* 快速答案 */
.ec-answer-box{margin-top:30px;padding:24px 26px;border:1px solid #ead9dc;border-left:4px solid var(--ec-accent);border-radius:14px;background:#fff}
.ec-answer-box strong{display:block;margin-bottom:8px;font-size:15px;color:var(--ec-accent)}
.ec-answer-box p{margin:0;color:#3f3f3f;font-size:16px;line-height:1.9}

/* Article layout */
.ec-article-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:58px;align-items:start;padding:58px 0 88px}
.ec-article{min-width:0}
.ec-article section{scroll-margin-top:98px}
.ec-article h2{margin:64px 0 18px;font-size:clamp(26px,3vw,34px);line-height:1.4;letter-spacing:-.02em;color:var(--ec-ink)}
.ec-article h3{margin:34px 0 12px;font-size:21px;line-height:1.55;color:var(--ec-ink)}
.ec-article p{margin:0 0 20px;color:var(--ec-text);font-size:17px;line-height:2}
.ec-article ul,.ec-article ol{margin:0 0 24px;padding-left:1.35em;color:var(--ec-text)}
.ec-article li{margin:8px 0;font-size:16.5px;line-height:1.85}
.ec-article strong{color:#292929}
.ec-article blockquote{margin:28px 0;padding:18px 22px;border-left:4px solid var(--ec-accent);background:var(--ec-soft);color:#393939;font-size:16px;line-height:1.9}

/* TOC */
.ec-toc{position:sticky;top:88px;padding:22px;border:1px solid var(--ec-line);border-radius:14px;background:#fff;box-shadow:0 8px 24px rgba(17,17,17,.035)}
.ec-toc__title{margin:0 0 12px;font-size:14px;font-weight:800;color:var(--ec-ink)}
.ec-toc ul{margin:0;padding:0;list-style:none;display:grid;gap:9px}
.ec-toc a{display:block;color:#6a6a6a;font-size:13.5px;line-height:1.55;text-decoration:none}
.ec-toc a:hover{color:var(--ec-accent)}

/* 4 要點 */
.ec-key-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:28px 0 34px}
.ec-key-card{padding:22px;border:1px solid var(--ec-line);border-radius:14px;background:#fff}
.ec-key-card__num{margin-bottom:9px;color:var(--ec-accent);font-size:12px;font-weight:800;letter-spacing:.08em}
.ec-key-card h3{margin:0 0 8px;font-size:18px}
.ec-key-card p{margin:0;font-size:15.5px;line-height:1.8}

/* Example */
.ec-example{margin:28px 0;padding:24px 26px;border-radius:14px;background:var(--ec-soft-2);border:1px solid var(--ec-line)}
.ec-example__label{margin-bottom:10px;color:var(--ec-accent);font-size:12px;font-weight:800;letter-spacing:.08em}
.ec-example p:last-child{margin-bottom:0}
.ec-example .ec-bad{color:#8a545a}
.ec-example .ec-good{color:#315f49}

/* Mistakes */
.ec-mistake-list{display:grid;gap:14px;margin-top:24px}
.ec-mistake{padding:22px 24px;border:1px solid var(--ec-line);border-radius:14px;background:#fff}
.ec-mistake h3{margin:0 0 8px;font-size:18px}
.ec-mistake p{margin:0;font-size:15.5px;line-height:1.85}

/* Checklist */
.ec-checklist{margin:28px 0;padding:26px;border-radius:16px;background:var(--ec-dark);color:#fff}
.ec-checklist h3{margin:0 0 18px;color:#fff;font-size:21px}
.ec-checklist ul{margin:0;padding:0;list-style:none;display:grid;gap:12px}
.ec-checklist li{position:relative;margin:0;padding-left:30px;color:rgba(255,255,255,.86);font-size:15.5px;line-height:1.75}
.ec-checklist li::before{content:"□";position:absolute;left:0;color:#f1a5b0;font-size:18px;font-weight:800}

/* CTA */
.ec-audit-cta{margin:70px 0 0;padding:38px;border-radius:20px;background:linear-gradient(135deg,#b11226,#8f0d1f);color:#fff}
.ec-audit-cta h2{margin:0 0 12px;color:#fff;font-size:30px}
.ec-audit-cta p{margin:0 0 22px;color:rgba(255,255,255,.88);font-size:16px;line-height:1.9}
.ec-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 20px;border-radius:999px;background:#111;color:#fff!important;font-size:15px;font-weight:800;text-decoration:none}
.ec-btn:hover{background:#fff;color:var(--ec-accent)!important;text-decoration:none}

/* Related */
.ec-related{padding:64px 0 80px;background:var(--ec-soft)}
.ec-related h2{margin:0 0 22px;font-size:28px}
.ec-related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.ec-related-card{padding:22px;border:1px solid var(--ec-line);border-radius:14px;background:#fff}
.ec-related-card__label{margin-bottom:8px;color:var(--ec-accent);font-size:12px;font-weight:800;letter-spacing:.08em}
.ec-related-card h3{margin:0;font-size:17px;line-height:1.6}
.ec-related-card p{margin:10px 0 0;color:var(--ec-muted);font-size:14px;line-height:1.7}
.ec-related-card.is-planned{opacity:.76}

@media(max-width:900px){
  .ec-article-layout{grid-template-columns:1fr;gap:34px;padding-top:42px}
  .ec-toc{position:static;order:-1}
  .ec-related-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  .ec-container,.ec-article-container{width:min(100% - 32px,1120px)}
  .ec-article-hero{padding:38px 0 34px}
  .ec-article-hero h1{font-size:36px}
  .ec-article-deck{font-size:17px;line-height:1.85}
  .ec-answer-box{padding:20px}
  .ec-article-layout{padding:36px 0 68px}
  .ec-article h2{margin-top:50px;font-size:27px}
  .ec-article p{font-size:16px;line-height:1.95}
  .ec-key-grid{grid-template-columns:1fr}
  .ec-audit-cta{padding:28px 22px}
  .ec-section-nav__inner{min-height:54px}
  .ec-section-nav__brand{display:none}
}


/* Hub / Knowledge base */
.ec-hub-hero{padding:72px 0 54px;background:linear-gradient(180deg,#fff 0%,#f8f5f3 100%);border-bottom:1px solid var(--ec-line)}
.ec-hub-hero h1{max-width:900px;margin:0;font-size:clamp(38px,5vw,58px);line-height:1.2;letter-spacing:-.035em}
.ec-hub-lead{max-width:820px;margin:22px 0 0;color:var(--ec-text);font-size:18px;line-height:1.95}
.ec-hub-answer{max-width:820px;margin-top:28px;padding:24px 26px;border-left:4px solid var(--ec-accent);border-radius:14px;background:#fff;box-shadow:0 8px 28px rgba(17,17,17,.04)}
.ec-hub-answer strong{display:block;margin-bottom:8px;color:var(--ec-accent);font-size:14px}.ec-hub-answer p{margin:0;color:#444;font-size:16px;line-height:1.9}
.ec-hub-section{padding:76px 0}.ec-hub-section--soft{background:var(--ec-soft)}
.ec-hub-section h2{margin:0;font-size:clamp(28px,3.5vw,40px);line-height:1.35}.ec-hub-section>.ec-container>p{max-width:780px;color:var(--ec-text);font-size:16.5px;line-height:1.9}
.ec-dimension-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:34px}
.ec-dimension-card{padding:30px;border:1px solid var(--ec-line);border-radius:18px;background:#fff;text-decoration:none;box-shadow:0 8px 24px rgba(17,17,17,.035)}
.ec-dimension-card:hover{transform:translateY(-2px);box-shadow:var(--ec-shadow);text-decoration:none}.ec-dimension-card__label{color:var(--ec-accent);font-size:12px;font-weight:800;letter-spacing:.12em}.ec-dimension-card h2,.ec-dimension-card h3{margin:10px 0 10px;font-size:25px}.ec-dimension-card p{margin:0;color:var(--ec-text);line-height:1.85;font-size:15.5px}
.ec-topic-list{display:grid;gap:22px;margin-top:38px}.ec-topic-block{padding:28px;border:1px solid var(--ec-line);border-radius:18px;background:#fff}.ec-topic-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:start}.ec-topic-block h2,.ec-topic-block h3{margin:0;font-size:23px;line-height:1.45}.ec-topic-count{padding:6px 10px;border-radius:999px;background:var(--ec-soft);color:var(--ec-muted);font-size:12px;white-space:nowrap}.ec-question-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 22px;margin:20px 0 0;padding:0;list-style:none}.ec-question-list a{display:block;padding:8px 0;color:#454545;font-size:15px;line-height:1.65;text-decoration:none;border-bottom:1px solid #f0ece9}.ec-question-list a:hover{color:var(--ec-accent)}
.ec-method-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:30px}.ec-method-card{padding:22px;border-radius:15px;background:#fff;border:1px solid var(--ec-line)}.ec-method-card strong{display:block;color:var(--ec-accent);font-size:17px}.ec-method-card span{display:block;margin-top:8px;color:var(--ec-text);font-size:14px;line-height:1.75}
.ec-inline-next{margin:34px 0;padding:20px 22px;border-radius:14px;background:var(--ec-soft);border:1px solid var(--ec-line)}.ec-inline-next strong{display:block;margin-bottom:8px}.ec-inline-next a{color:var(--ec-accent);font-weight:700;text-decoration:none}
.ec-source-note{margin:30px 0 0;padding:16px 18px;border-top:1px solid var(--ec-line);border-bottom:1px solid var(--ec-line);color:var(--ec-muted);font-size:13.5px;line-height:1.75}.ec-source-note a{color:var(--ec-accent);text-decoration:none}
@media(max-width:900px){.ec-method-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ec-question-list{grid-template-columns:1fr}.ec-dimension-grid{grid-template-columns:1fr}}
@media(max-width:640px){.ec-hub-hero{padding:48px 0 40px}.ec-hub-hero h1{font-size:37px}.ec-hub-section{padding:58px 0}.ec-topic-block{padding:22px}.ec-topic-head{grid-template-columns:1fr}.ec-method-grid{grid-template-columns:1fr}}