/* =============================================================
   HKPrice Nexus — 商業寬頻專區 /business-broadband/
   原生 CSS，無框架。配色沿用網站橙 + 深藍，企業級質感。
   如需微調品牌色，只改下方 :root 變數即可。
   ============================================================= */

:root {
  /* 品牌色 —— 如與正式站略有出入，改呢度即可 */
  --navy-900: #0a1b33;
  --navy-800: #0e2444;
  --navy-700: #12305c;
  --navy-600: #1b4079;

  --orange-500: #ff6a13;
  --orange-600: #e85d0c;
  --orange-100: #fff1e7;

  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50:  #f8fafc;
  --white:     #ffffff;

  --whatsapp:  #25d366;
  --whatsapp-dark: #1da851;

  /* 排版 —— 系統字體堆疊，內含繁中字型，零額外請求 */
  --font-sans: "PingFang TC", "PingFang HK", "Microsoft JhengHei",
    "Noto Sans TC", "Helvetica Neue", "Segoe UI", system-ui, -apple-system,
    "Arial", sans-serif;
  --font-num: "SF Pro Display", "Helvetica Neue", var(--font-sans);

  --shadow-sm: 0 1px 2px rgba(10, 27, 51, 0.06);
  --shadow-md: 0 8px 24px rgba(10, 27, 51, 0.08);
  --shadow-lg: 0 24px 60px rgba(10, 27, 51, 0.14);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;

  --maxw: 1180px;
  --gutter: clamp(20px, 5vw, 40px);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--slate-700);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 3px solid var(--orange-500); outline-offset: 3px; border-radius: 6px; }

/* ---------- Layout helpers ---------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(56px, 8vw, 96px); }
.section--tint { background: var(--slate-50); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--orange-600);
}
.eyebrow::before {
  content: ""; width: 22px; height: 2px; background: var(--orange-500); border-radius: 2px;
}
.section-head { max-width: 640px; margin-bottom: clamp(32px, 5vw, 52px); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-title {
  font-size: clamp(26px, 3.4vw, 38px); line-height: 1.25; font-weight: 800;
  color: var(--navy-800); letter-spacing: -0.01em; margin-top: 14px;
}
.section-sub { margin-top: 14px; color: var(--slate-500); font-size: clamp(15px, 1.6vw, 17px); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: inherit; font-size: 16px; font-weight: 700; cursor: pointer;
  border: 1px solid transparent; border-radius: 999px; padding: 15px 26px;
  transition: transform .15s ease, box-shadow .2s ease, background-color .2s ease, color .2s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn svg { width: 20px; height: 20px; flex: none; }

.btn--wa { background: var(--whatsapp); color: #fff; box-shadow: 0 10px 24px rgba(37, 211, 102, 0.32); }
.btn--wa:hover { background: var(--whatsapp-dark); box-shadow: 0 14px 30px rgba(37, 211, 102, 0.4); }

.btn--primary { background: var(--orange-500); color: #fff; box-shadow: 0 10px 24px rgba(255, 106, 19, 0.32); }
.btn--primary:hover { background: var(--orange-600); }

.btn--ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.35); }
.btn--ghost:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.6); }

.btn--outline { background: #fff; color: var(--navy-700); border-color: var(--slate-200); box-shadow: var(--shadow-sm); }
.btn--outline:hover { border-color: var(--orange-500); color: var(--orange-600); }

/* =============================================================
   Header
   ============================================================= */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--slate-200);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--navy-800); font-size: 18px; letter-spacing: -0.01em; }
.brand__logo { height: 38px; width: auto; max-width: 220px; object-fit: contain; display: block; }
@media (max-width: 480px) { .brand__logo { height: 32px; } }
.brand__mark {
  width: 30px; height: 30px; border-radius: 8px; flex: none;
  background: linear-gradient(135deg, var(--orange-500), var(--navy-700));
  display: grid; place-items: center; color: #fff; font-size: 14px; font-weight: 800;
}
.brand__badge { font-size: 12px; font-weight: 700; color: var(--orange-600); background: var(--orange-100); padding: 3px 9px; border-radius: 999px; margin-left: 4px; }
.header-cta { display: none; }
@media (min-width: 720px) { .header-cta { display: inline-flex; padding: 11px 20px; font-size: 15px; } }

/* =============================================================
   Hero —— CSS/SVG 科技背景，無大圖、無 CLS
   ============================================================= */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background-color: var(--navy-900);
  background-image:
    radial-gradient(90% 70% at 88% 8%, rgba(255, 106, 19, 0.20), transparent 55%),
    linear-gradient(100deg, rgba(8, 21, 43, 0.94) 0%, rgba(10, 27, 51, 0.84) 38%, rgba(12, 32, 60, 0.55) 72%, rgba(12, 32, 60, 0.34) 100%),
    url("hero-business.webp");
  background-position: center, center, center;
  background-size: cover, cover, cover;
  background-repeat: no-repeat, no-repeat, no-repeat;
}
.hero__grid {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.22;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(120% 80% at 70% 20%, #000 40%, transparent 85%);
          mask-image: radial-gradient(120% 80% at 70% 20%, #000 40%, transparent 85%);
}
.hero__net { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.hero .container { position: relative; z-index: 2; }
.hero__inner { padding-block: clamp(64px, 11vw, 120px); max-width: 760px; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 700; letter-spacing: 0.12em; color: #ffd9bf;
  background: rgba(255, 106, 19, 0.14); border: 1px solid rgba(255, 106, 19, 0.35);
  padding: 7px 15px; border-radius: 999px;
}
.hero__eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--orange-500); box-shadow: 0 0 0 4px rgba(255,106,19,0.25); }
.hero__title {
  margin-top: 22px; font-size: clamp(32px, 6vw, 56px); line-height: 1.12;
  font-weight: 800; letter-spacing: -0.02em;
}
.hero__title .accent {
  background: linear-gradient(100deg, var(--orange-500), #ffb37a);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__sub { margin-top: 20px; font-size: clamp(16px, 2vw, 19px); color: #c7d3e6; max-width: 620px; }
.hero__actions { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 14px; }
.hero__trust { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 22px 32px; color: #9fb0cc; font-size: 14px; }
.hero__trust li { display: flex; align-items: center; gap: 9px; }
.hero__trust svg { width: 18px; height: 18px; color: var(--orange-500); flex: none; }

/* =============================================================
   服務入口卡片 (3)
   ============================================================= */
.entry-grid { display: grid; gap: 22px; grid-template-columns: 1fr; }
@media (min-width: 720px) { .entry-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .entry-grid { grid-template-columns: repeat(3, 1fr); } }

.entry-card {
  position: relative; display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius-md);
  padding: 30px 28px 26px; box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  overflow: hidden;
}
.entry-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 4px;
  background: linear-gradient(90deg, var(--orange-500), var(--navy-600));
  transform: scaleX(0); transform-origin: left; transition: transform .25s ease;
}
.entry-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.entry-card:hover::before { transform: scaleX(1); }
.entry-card__icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: var(--orange-100); color: var(--orange-600); margin-bottom: 18px;
}
.entry-card__icon svg { width: 26px; height: 26px; }
.entry-card__title { font-size: 20px; font-weight: 800; color: var(--navy-800); }
.entry-card__desc { margin-top: 10px; color: var(--slate-500); font-size: 15px; flex: 1; }
.entry-card__link {
  margin-top: 20px; display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; color: var(--orange-600); font-size: 15px;
}
.entry-card__link svg { width: 18px; height: 18px; transition: transform .2s ease; }
.entry-card:hover .entry-card__link svg { transform: translateX(4px); }

/* =============================================================
   為何選擇 (4 特色)
   ============================================================= */
.feature-grid { display: grid; gap: 20px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .feature-grid { grid-template-columns: repeat(4, 1fr); } }
.feature {
  background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius-md);
  padding: 26px 24px; box-shadow: var(--shadow-sm);
}
.feature__icon {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--navy-800); color: #fff; margin-bottom: 16px;
}
.feature__icon svg { width: 23px; height: 23px; }
.feature__title { font-size: 17px; font-weight: 800; color: var(--navy-800); }
.feature__desc { margin-top: 8px; font-size: 14.5px; color: var(--slate-500); }

/* =============================================================
   適合企業 Icon Grid (8)
   ============================================================= */
.biz-grid { display: grid; gap: 16px; grid-template-columns: repeat(2, 1fr); }
@media (min-width: 640px) { .biz-grid { grid-template-columns: repeat(4, 1fr); } }
.biz-item {
  display: flex; flex-direction: column; align-items: center; text-align: center; gap: 12px;
  background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius-md);
  padding: 26px 14px; box-shadow: var(--shadow-sm);
  transition: transform .18s ease, border-color .18s ease;
}
.biz-item:hover { transform: translateY(-3px); border-color: var(--orange-500); }
.biz-item__icon {
  width: 50px; height: 50px; border-radius: 50%; display: grid; place-items: center;
  background: var(--orange-100); color: var(--orange-600);
}
.biz-item__icon svg { width: 26px; height: 26px; }
.biz-item__label { font-size: 15px; font-weight: 700; color: var(--navy-800); }

/* =============================================================
   查詢流程 (4 steps) —— 真實序列，故用 01–04 標記
   ============================================================= */
.steps {
  display: grid; gap: 22px; grid-template-columns: 1fr; counter-reset: step;
}
@media (min-width: 640px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.step {
  position: relative; background: var(--navy-800); color: #fff;
  border-radius: var(--radius-md); padding: 28px 24px 26px; overflow: hidden;
}
.step::after {
  content: ""; position: absolute; right: -30px; top: -30px; width: 120px; height: 120px;
  background: radial-gradient(circle, rgba(255,106,19,0.22), transparent 68%);
}
.step__num {
  font-family: var(--font-num); font-size: 15px; font-weight: 800; letter-spacing: 0.08em;
  color: var(--orange-500);
}
.step__num::before { counter-increment: step; content: "0" counter(step); }
.step__line { width: 34px; height: 3px; background: var(--orange-500); border-radius: 3px; margin: 14px 0 16px; }
.step__title { font-size: 18px; font-weight: 800; }
.step__desc { margin-top: 8px; font-size: 14.5px; color: #b9c6dc; }

/* =============================================================
   FAQ Accordion
   ============================================================= */
.faq { max-width: 820px; margin-inline: auto; }
.faq__item { border: 1px solid var(--slate-200); border-radius: var(--radius-sm); background: #fff; margin-bottom: 14px; box-shadow: var(--shadow-sm); overflow: hidden; }
.faq__q {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  font-family: inherit; font-size: clamp(15.5px, 2vw, 17px); font-weight: 700; color: var(--navy-800);
  padding: 20px 22px; display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.faq__q:hover { color: var(--orange-600); }
.faq__icon { flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--orange-100); color: var(--orange-600); display: grid; place-items: center; transition: transform .25s ease, background-color .2s ease; }
.faq__icon svg { width: 16px; height: 16px; }
.faq__item[aria-expanded="true"] .faq__icon { transform: rotate(45deg); background: var(--orange-500); color: #fff; }
.faq__a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq__a-inner { padding: 0 22px 20px; color: var(--slate-500); font-size: 15.5px; }

/* =============================================================
   CTA Band
   ============================================================= */
.cta-band { position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(100% 120% at 90% 0%, rgba(255,106,19,0.35), transparent 55%),
    linear-gradient(140deg, var(--navy-800), var(--navy-900));
  border-radius: var(--radius-lg);
  padding: clamp(38px, 6vw, 60px);
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 28px;
}
.cta-band__title { font-size: clamp(22px, 3.2vw, 32px); font-weight: 800; letter-spacing: -0.01em; }
.cta-band__sub { margin-top: 10px; color: #c7d3e6; font-size: 16px; max-width: 520px; }

/* =============================================================
   Footer
   ============================================================= */
.site-footer { background: var(--navy-900); color: #9fb0cc; padding-block: 44px; margin-top: 0; }
.site-footer__inner { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; justify-content: space-between; }
.site-footer a:hover { color: #fff; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; font-size: 14px; }
.site-footer__copy { font-size: 13px; color: var(--slate-500); }

/* ---------- Breadcrumb ---------- */
.breadcrumb { padding-block: 16px; font-size: 13.5px; color: var(--slate-500); }
.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.breadcrumb li { display: flex; align-items: center; gap: 8px; }
.breadcrumb li:not(:last-child)::after { content: "›"; color: var(--slate-400); }
.breadcrumb a:hover { color: var(--orange-600); }
.breadcrumb [aria-current="page"] { color: var(--navy-700); font-weight: 600; }

/* ---------- 浮動 WhatsApp (Mobile) ---------- */
.wa-float {
  position: fixed; right: 16px; bottom: 18px; z-index: 60;
  width: 56px; height: 56px; border-radius: 50%; background: var(--whatsapp); color: #fff;
  display: grid; place-items: center; box-shadow: 0 12px 28px rgba(37,211,102,0.45);
}
.wa-float svg { width: 30px; height: 30px; }
@media (min-width: 720px) { .wa-float { display: none; } }

/* ---------- 動效 & 可及性 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}

/* =============================================================
   方案比較卡（由 plans/business.json + data/providers.json 自動讀取）
   ============================================================= */
.biz-filter { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 28px; }
.biz-filter__btn {
  font-family: inherit; font-size: 14px; font-weight: 600; cursor: pointer;
  padding: 9px 18px; border-radius: 999px; border: 1px solid var(--slate-200);
  background: #fff; color: var(--slate-700); box-shadow: var(--shadow-sm);
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}
.biz-filter__btn:hover { border-color: var(--orange-500); color: var(--orange-600); }
.biz-filter__btn.is-active { background: var(--navy-800); border-color: var(--navy-800); color: #fff; }

.biz-plan-grid { display: grid; gap: 20px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .biz-plan-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .biz-plan-grid { grid-template-columns: repeat(3, 1fr); } }

.biz-plan-card {
  display: flex; flex-direction: column; background: #fff;
  border: 1px solid var(--slate-200); border-radius: var(--radius-md);
  padding: 24px 22px; box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease;
}
.biz-plan-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.biz-plan-card__isp { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 8px; }
.biz-plan-card__brand { font-size: 12px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; color: var(--orange-600); }
.biz-plan-card__cat { font-size: 11px; font-weight: 700; color: var(--slate-500); background: var(--slate-100); padding: 3px 9px; border-radius: 999px; white-space: nowrap; }
.biz-plan-card__name { font-size: 17px; font-weight: 800; color: var(--navy-800); line-height: 1.35; }
.biz-plan-card__speed { margin-top: 6px; font-size: 13px; color: var(--slate-500); font-weight: 600; }
.biz-plan-card__price { margin-top: 14px; font-weight: 800; color: var(--navy-800); display: flex; align-items: baseline; gap: 2px; }
.biz-plan-card__price .num { font-size: 30px; line-height: 1; }
.biz-plan-card__price .unit { font-size: 13px; color: var(--slate-500); font-weight: 600; margin-left: 2px; }
.biz-plan-card__orig { font-size: 13px; color: var(--slate-400); text-decoration: line-through; font-weight: 600; margin-left: 8px; }
.biz-plan-card__price--inquiry { color: var(--orange-600); font-size: 22px; }
.biz-plan-card__badges { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.biz-plan-card__badge { font-size: 11.5px; font-weight: 600; color: var(--navy-700); background: var(--orange-100); border: 1px solid #ffe0cc; padding: 3px 9px; border-radius: 6px; }
.biz-plan-card__features { margin-top: 14px; display: flex; flex-direction: column; gap: 7px; flex: 1; }
.biz-plan-card__features li { position: relative; padding-left: 22px; font-size: 13.5px; color: var(--slate-700); }
.biz-plan-card__features li::before { content: ""; position: absolute; left: 2px; top: 5px; width: 12px; height: 7px; border-left: 2px solid var(--orange-500); border-bottom: 2px solid var(--orange-500); transform: rotate(-45deg); }
.biz-plan-card__wa {
  margin-top: 18px; display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 12px; border-radius: 999px; background: var(--whatsapp); color: #fff;
  font-weight: 700; font-size: 14.5px; text-decoration: none;
  transition: background-color .15s ease, box-shadow .2s ease;
}
.biz-plan-card__wa:hover { background: var(--whatsapp-dark); box-shadow: 0 10px 24px rgba(37, 211, 102, .32); }
.biz-plan-card__wa svg { width: 19px; height: 19px; flex: none; }

.biz-note { grid-column: 1 / -1; text-align: center; color: var(--slate-400); font-size: 13px; margin-top: 4px; }
.biz-empty { grid-column: 1 / -1; text-align: center; padding: 44px 20px; color: var(--slate-500); font-size: 15px; }
.biz-skeleton { height: 300px; border-radius: var(--radius-md); background: linear-gradient(100deg, #eef1f6 30%, #f6f8fb 50%, #eef1f6 70%); background-size: 200% 100%; animation: bizShimmer 1.3s ease-in-out infinite; }
@keyframes bizShimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
@media (prefers-reduced-motion: reduce) { .biz-skeleton { animation: none; } }

/* 子頁精簡 hero */
.hero--compact .hero__inner { padding-block: clamp(44px, 7vw, 74px); max-width: 820px; }
.hero--compact .hero__title { font-size: clamp(28px, 4.6vw, 42px); }

/* 最新文章卡片 */
.article-grid { display: grid; gap: 20px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .article-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .article-grid { grid-template-columns: repeat(4, 1fr); } }
.article-card {
  display: flex; flex-direction: column; background: #fff; text-decoration: none;
  border: 1px solid var(--slate-200); border-radius: var(--radius-md);
  padding: 20px 20px 18px; box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease;
}
a.article-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.article-card__tag {
  align-self: flex-start; font-size: 11px; font-weight: 800; letter-spacing: .04em;
  color: var(--orange-600); background: var(--orange-100); border: 1px solid #ffe0cc;
  padding: 3px 10px; border-radius: 999px; margin-bottom: 10px;
}
.article-card__tag--soon { color: var(--slate-500); background: var(--slate-100); border-color: var(--slate-200); }
.article-card__title { font-size: 15.5px; font-weight: 800; color: var(--navy-800); line-height: 1.4; }
.article-card__desc { margin-top: 8px; font-size: 13px; color: var(--slate-500); line-height: 1.55; flex: 1; }
.article-card__link { margin-top: 14px; font-size: 13.5px; font-weight: 700; color: var(--orange-600); }
.article-card--soon { cursor: default; opacity: .72; }
.article-card--soon .article-card__title { color: var(--slate-500); }

/* 文章內文排版（/business-broadband/articles/ 專用） */
.article-body { max-width: 760px; margin: 0 auto; }
.article-body h2 { font-size: 22px; font-weight: 800; color: var(--navy-800); margin: 40px 0 14px; line-height: 1.4; }
.article-body h3 { font-size: 17px; font-weight: 800; color: var(--navy-800); margin: 26px 0 10px; }
.article-body p { font-size: 15.5px; line-height: 1.85; color: var(--slate-700); margin: 0 0 16px; }
.article-body ul { margin: 0 0 16px; padding-left: 22px; }
.article-body li { font-size: 15.5px; line-height: 1.85; color: var(--slate-700); margin-bottom: 4px; }
.article-body strong { color: var(--navy-800); font-weight: 700; }
.article-body hr { border: none; border-top: 1px solid var(--slate-200); margin: 32px 0; }
.article-body .lede { font-size: 17px; color: var(--slate-700); line-height: 1.8; }
.article-meta { max-width: 760px; margin: 0 auto 8px; display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--slate-500); font-weight: 600; }
.article-meta__tag { color: var(--orange-600); background: var(--orange-100); border: 1px solid #ffe0cc; padding: 3px 10px; border-radius: 999px; font-size: 11.5px; font-weight: 800; }
.article-cta { max-width: 760px; margin: 32px auto 0; padding: 22px; border-radius: var(--radius-md); background: var(--slate-50); border: 1px solid var(--slate-200); text-align: center; }
.article-cta p { margin-bottom: 14px; }

/* 一分鐘快速結論 */
.article-summary {
  max-width: 760px; margin: 0 auto 30px; padding: 22px 24px;
  background: var(--orange-100); border: 1px solid #ffd8b8; border-left: 5px solid var(--orange-500);
  border-radius: var(--radius-md);
}
.article-summary__title { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 800; color: var(--orange-600); text-transform: uppercase; letter-spacing: .04em; margin-bottom: 12px; }
.article-summary__title svg { width: 18px; height: 18px; }
.article-summary ul { margin: 0; padding-left: 0; list-style: none; }
.article-summary li { position: relative; padding-left: 26px; font-size: 14.5px; line-height: 1.7; color: var(--navy-800); font-weight: 600; margin-bottom: 8px; }
.article-summary li:last-child { margin-bottom: 0; }
.article-summary li::before { content: ""; position: absolute; left: 2px; top: 5px; width: 13px; height: 8px; border-left: 2.5px solid var(--orange-600); border-bottom: 2.5px solid var(--orange-600); transform: rotate(-45deg); }

/* 可摺疊目錄 */
.article-toc { max-width: 760px; margin: 0 auto 30px; border: 1px solid var(--slate-200); border-radius: var(--radius-md); background: #fff; box-shadow: var(--shadow-sm); }
.article-toc summary { list-style: none; cursor: pointer; padding: 16px 20px; font-size: 15px; font-weight: 800; color: var(--navy-800); display: flex; align-items: center; justify-content: space-between; }
.article-toc summary::-webkit-details-marker { display: none; }
.article-toc summary::after { content: ""; width: 10px; height: 10px; border-right: 2px solid var(--slate-500); border-bottom: 2px solid var(--slate-500); transform: rotate(45deg); transition: transform .2s ease; flex: none; }
.article-toc[open] summary::after { transform: rotate(-135deg); }
.article-toc__list { list-style: none; margin: 0; padding: 0 20px 18px; display: flex; flex-direction: column; gap: 9px; }
.article-toc__list a { font-size: 14px; color: var(--slate-700); font-weight: 600; text-decoration: none; }
.article-toc__list a:hover { color: var(--orange-600); }

/* 內文 checklist */
.article-body .checklist { margin: 0 0 16px; padding: 0; list-style: none; }
.article-body .checklist li { position: relative; padding-left: 26px; font-size: 15.5px; line-height: 1.75; color: var(--slate-700); margin-bottom: 8px; }
.article-body .checklist li::before { content: ""; position: absolute; left: 2px; top: 6px; width: 13px; height: 8px; border-left: 2.5px solid var(--orange-500); border-bottom: 2.5px solid var(--orange-500); transform: rotate(-45deg); }

/* 供應商比較卡（HGC / HKBN / Netvigator） */
.compare-cards { display: grid; gap: 20px; grid-template-columns: 1fr; margin: 20px 0 30px; max-width: 760px; margin-left: auto; margin-right: auto; }
@media (min-width: 860px) { .compare-cards { grid-template-columns: repeat(3, 1fr); max-width: none; } }
.compare-card { background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius-md); padding: 22px 20px; box-shadow: var(--shadow-sm); transition: transform .2s ease, box-shadow .2s ease; }
.compare-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.compare-card h2 { margin: 0 0 14px !important; font-size: 19px !important; color: var(--orange-600) !important; }
.compare-card h3 { margin: 16px 0 8px !important; font-size: 14px !important; }
.compare-card h3:first-of-type { margin-top: 0 !important; }
.compare-card p { font-size: 14px !important; margin-bottom: 10px !important; }
.compare-card .checklist li { font-size: 13.5px; margin-bottom: 6px; }

/* 橫向重點卡（揀商業寬頻 5 件事） */
.highlight-row { display: grid; gap: 16px; grid-template-columns: 1fr; margin: 20px 0 30px; }
@media (min-width: 700px) { .highlight-row { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .highlight-row { grid-template-columns: repeat(5, 1fr); } }
.highlight-card { display: flex; flex-direction: column; gap: 10px; background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius-md); padding: 20px 18px; box-shadow: var(--shadow-sm); }
.highlight-card__num { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; border-radius: 50%; background: var(--orange-100); color: var(--orange-600); font-weight: 800; font-size: 14px; }
.highlight-card h3 { margin: 0 !important; font-size: 15px !important; }
.highlight-card p { margin: 0 !important; font-size: 13.5px !important; color: var(--slate-500) !important; line-height: 1.6; }

/* 大型橙色 CTA 轉換區塊 */
.cta-band--orange {
  background: radial-gradient(120% 140% at 15% 0%, rgba(255,255,255,0.18), transparent 55%), linear-gradient(135deg, var(--orange-500), var(--orange-600));
}
.cta-band--orange .cta-band__sub { color: #ffe8d8; }
.cta-band--orange .btn--primary { background: #fff; color: var(--orange-600); }
.cta-band--orange .btn--primary:hover { background: var(--navy-800); color: #fff; }

/* Footer logo：深藍底轉白色顯示 */
.brand__logo--footer { height: 36px; width: auto; filter: brightness(0) invert(1); }

/* 方案卡：限時優惠 badge + 回贈後價格註 */
.biz-plan-card--promo { border-color: #ffd8b8; box-shadow: 0 0 0 1px #ffe6d0, var(--shadow-sm); }
.biz-plan-card--promo:hover { box-shadow: 0 0 0 1px #ffd8b8, var(--shadow-lg); }
.biz-plan-card__promo {
  display: inline-flex; align-items: center; gap: 7px; align-self: flex-start;
  font-size: 11.5px; font-weight: 800; letter-spacing: .02em; color: #b45309;
  background: #fff7ed; border: 1px solid #fed7aa; padding: 4px 11px;
  border-radius: 999px; margin-bottom: 12px;
}
.biz-plan-card__promo::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #f97316; flex: none; }
.biz-plan-card__pricenote { font-size: 12px; color: var(--slate-500); margin-top: 3px; font-weight: 600; }

/* 無供應商號碼時的「參考價」註（取代 WhatsApp 掣）*/
.biz-plan-card__ref {
  margin-top: 18px; text-align: center; font-size: 13px; font-weight: 600;
  color: var(--slate-500); background: var(--slate-50);
  border: 1px dashed var(--slate-200); border-radius: 999px; padding: 11px;
}

/* HKPrice Nexus 獨家優惠 callout */
.biz-plan-card__exclusive {
  display: flex; align-items: center; gap: 8px; margin-top: 14px;
  padding: 10px 13px; border-radius: 10px;
  background: linear-gradient(100deg, #fff7ed, #ffedd5);
  border: 1px solid #fdba74;
  color: #b45309; font-size: 13px; font-weight: 800; line-height: 1.35;
}
.biz-plan-card__exclusive svg { width: 16px; height: 16px; flex: none; color: #f97316; }

/* 語言切換掣（繁/EN）*/
.biz-lang { display: inline-flex; align-items: center; gap: 2px; background: var(--slate-100); border-radius: 999px; padding: 3px; }
.biz-lang-btn { border: 0; background: none; font-family: inherit; font-size: 13px; font-weight: 700; color: var(--slate-500); padding: 6px 13px; border-radius: 999px; cursor: pointer; transition: background-color .15s ease, color .15s ease; }
.biz-lang-btn:hover { color: var(--navy-800); }
.biz-lang-btn.is-active { background: #fff; color: var(--navy-800); box-shadow: var(--shadow-sm); }

/* Hero 金色流光（水面 → 大廈）— glow 用 CSS blur、20s、手機/reduced-motion 關閉
   注：暫校強以確認可見，確認後可調回 5-10% */
.hero__flow { position:absolute; inset:0; width:100%; height:100%; pointer-events:none; z-index:1; overflow:visible;
  -webkit-mask-image:linear-gradient(to right, transparent 0%, transparent 16%, #000 40%, #000 100%);
          mask-image:linear-gradient(to right, transparent 0%, transparent 16%, #000 40%, #000 100%); }
.hero__flow-sea { opacity:.18; filter:blur(26px); transform-origin:820px 450px; animation:hbSeaPulse 20s ease-in-out infinite; }
@keyframes hbSeaPulse { 0%,100%{opacity:.12; transform:scale(.9);} 50%{opacity:.20; transform:scale(1.1);} }
.hero__flow-line { opacity:.45; filter:blur(1.4px); stroke-dasharray:70 300; animation:hbFlowUp 20s linear infinite; }
.hero__flow-line.l2 { opacity:.38; animation-delay:-7s; }
.hero__flow-line.l3 { opacity:.32; animation-delay:-13s; }
@keyframes hbFlowUp { from{stroke-dashoffset:370;} to{stroke-dashoffset:0;} }
@media (max-width:768px){ .hero__flow{ display:none; } }
@media (prefers-reduced-motion: reduce){ .hero__flow{ display:none; } }