/* ─────────────────────────────────────────────
     BASE & TOKENS
  ───────────────────────────────────────────── */
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }

  body {
    font-family: 'Noto Sans TC', sans-serif;
    background: #f7f5fb;
    color: #2a2240;
    line-height: 1.7;
    overflow-x: hidden;
    padding-top: 0px;
  }

  :root {
    --bs-purple:    #6c5fc7;
    --bs-purple-dk: #4b3fa0;
    --bs-purple-lt: #ede9f8;
    --bs-violet:    #9b8de8;
    --bs-sage:      #7aad9a;
    --bs-text:      #2a2240;
    --bs-text-md:   #5a5272;
    --bs-text-lt:   #8e87a8;
    --bs-white:     #ffffff;
    --bs-bg:        #f7f5fb;
    --bs-ease:      0.28s cubic-bezier(0.4,0,0.2,1);
  }

  ::-webkit-scrollbar { width: 5px; }
  ::-webkit-scrollbar-track { background: var(--bs-purple-lt); }
  ::-webkit-scrollbar-thumb { background: var(--bs-purple); border-radius: 3px; }

  /* ─────────────────────────────────────────────
     PAGE HERO
  ───────────────────────────────────────────── */
  .bs-page-hero {
    position: relative;
    background: linear-gradient(148deg, #faf8ff 0%, #f0ecfa 45%, #e8e2f5 100%);
    padding: 4.5rem 2rem 3.5rem;
    overflow: hidden;
    text-align: center;
  }
  .bs-page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(108,95,199,0.09) 1px, transparent 1px);
    background-size: 30px 30px;
    pointer-events: none;
  }
  .bs-page-hero__blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(65px);
    pointer-events: none;
    opacity: 0.45;
  }
  .bs-page-hero__blob--1 {
    width: 420px; height: 420px;
    background: radial-gradient(circle, #c4b9f0 0%, transparent 70%);
    top: -100px; right: -80px;
    animation: bs-float 11s ease-in-out infinite;
  }
  .bs-page-hero__blob--2 {
    width: 320px; height: 320px;
    background: radial-gradient(circle, #aad5c8 0%, transparent 70%);
    bottom: -70px; left: -70px;
    animation: bs-float 13s ease-in-out infinite reverse;
  }
  @keyframes bs-float {
    0%,100% { transform: translate(0,0); }
    50%      { transform: translate(14px,-18px); }
  }
  .bs-page-hero__inner { position: relative; max-width: 700px; margin: 0 auto; }
  .bs-page-hero__label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--bs-purple);
    background: rgba(108,95,199,0.1);
    border: 1px solid rgba(108,95,199,0.2);
    padding: 0.3rem 0.9rem;
    border-radius: 50px;
    margin-bottom: 1.1rem;
    animation: bs-fade-up 0.5s 0.1s both;
  }
  .bs-page-hero__h2 {
    font-family: 'Noto Serif TC', serif;
    font-size: clamp(1.9rem, 4vw, 2.9rem);
    font-weight: 700;
    line-height: 1.3;
    color: var(--bs-text);
    margin-bottom: 1rem;
    animation: bs-fade-up 0.5s 0.2s both;
  }
  .bs-page-hero__h2 em {
    font-style: normal;
    background: linear-gradient(130deg, var(--bs-purple), var(--bs-violet));
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
  }
  .bs-page-hero__desc {
    font-size: 15px;
    color: var(--bs-text-md);
    line-height: 1.9;
    margin-bottom: 2rem;
    animation: bs-fade-up 0.5s 0.3s both;
  }
  .bs-page-hero__actions {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    flex-wrap: wrap;
    animation: bs-fade-up 0.5s 0.4s both;
  }

  /* ─────────────────────────────────────────────
     QUICK-NAV（靜態，不 sticky）
  ───────────────────────────────────────────── */
  .bs-quick-nav {
    background: white;
    border-bottom: 1px solid rgba(108,95,199,0.1);
    /* 移除 position:sticky，回歸文件流 */
    box-shadow: 0 2px 12px rgba(108,95,199,0.06);
  }
  .bs-quick-nav__inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    gap: 0;
    overflow-x: auto;
    scrollbar-width: none;
  }
  .bs-quick-nav__inner::-webkit-scrollbar { display: none; }
  .bs-quick-nav__btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 1rem 1.1rem;
    font-size: 13px;
    font-weight: 500;
    color: var(--bs-text-md);
    text-decoration: none;
    white-space: nowrap;
    border-bottom: 2.5px solid transparent;
    transition: color var(--bs-ease), border-color var(--bs-ease);
    flex-shrink: 0;
  }
  .bs-quick-nav__btn:hover,
  .bs-quick-nav__btn.bs-active {
    color: var(--bs-purple);
    border-bottom-color: var(--bs-purple);
  }

  /* ─────────────────────────────────────────────
     SECTION COMMON
  ───────────────────────────────────────────── */
  .bs-section { padding: 5rem 2rem; }
  .bs-section--alt { background: white; }
  .bs-section--tint {
    background: linear-gradient(160deg, #f2effc 0%, #f7f5fb 100%);
  }
  .bs-section__container { max-width: 1280px; margin: 0 auto; }

  .bs-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--bs-purple);
    background: var(--bs-purple-lt);
    padding: 0.28rem 0.85rem;
    border-radius: 50px;
    margin-bottom: 0.9rem;
  }
  .bs-h2 {
    font-family: 'Noto Serif TC', serif;
    font-size: clamp(1.55rem, 2.8vw, 2.1rem);
    font-weight: 700;
    line-height: 1.35;
    color: var(--bs-text);
    margin-bottom: 0.7rem;
  }
  .bs-h2 em {
    font-style: normal;
    background: linear-gradient(130deg, var(--bs-purple), var(--bs-violet));
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
  }
  .bs-lead {
    font-size: 14.5px;
    color: var(--bs-text-md);
    line-height: 1.9;
    max-width: 580px;
  }
  .bs-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem 4rem;
    align-items: center;
  }
  .bs-row--rev { direction: rtl; }
  .bs-row--rev > * { direction: ltr; }

  /* ─────────────────────────────────────────────
     BUTTONS
  ───────────────────────────────────────────── */
  .bs-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 0.75rem 1.6rem;
    border-radius: 50px;
    font-size: 13.5px;
    font-weight: 600;
    text-decoration: none;
    transition: transform var(--bs-ease), box-shadow var(--bs-ease), background var(--bs-ease);
  }
  .bs-btn--primary {
    background: linear-gradient(135deg, var(--bs-purple), var(--bs-purple-dk));
    color: white;
    box-shadow: 0 5px 18px rgba(108,95,199,0.32);
  }
  .bs-btn--primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(108,95,199,0.42); }
  .bs-btn--ghost {
    background: white;
    color: var(--bs-purple);
    border: 1.5px solid rgba(108,95,199,0.28);
  }
  .bs-btn--ghost:hover { background: var(--bs-purple-lt); border-color: var(--bs-purple); transform: translateY(-2px); }
  .bs-btn--white {
    background: white;
    color: var(--bs-purple);
    box-shadow: 0 4px 14px rgba(0,0,0,0.1);
  }
  .bs-btn--white:hover { transform: translateY(-2px); box-shadow: 0 7px 22px rgba(0,0,0,0.16); }
  .bs-btn--outline-w {
    background: transparent;
    color: white;
    border: 1.5px solid rgba(255,255,255,0.5);
  }
  .bs-btn--outline-w:hover { border-color: white; background: rgba(255,255,255,0.1); transform: translateY(-2px); }

  /* ─────────────────────────────────────────────
     FEATURE PILLS
  ───────────────────────────────────────────── */
  .bs-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin: 0.9rem 0 1.4rem;
  }
  .bs-pill {
    font-size: 11.5px;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: 50px;
    background: var(--bs-purple-lt);
    color: var(--bs-purple);
    border: 1px solid rgba(108,95,199,0.18);
  }
  .bs-pill--sage {
    background: rgba(122,173,154,0.12);
    color: #3d8a6e;
    border-color: rgba(122,173,154,0.3);
  }

  /* ─────────────────────────────────────────────
     CHECK LIST
  ───────────────────────────────────────────── */
  .bs-checklist {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin: 1.1rem 0 1.7rem;
  }
  .bs-checklist li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: var(--bs-text-md);
    line-height: 1.65;
  }
  .bs-checklist li::before {
    content: '✓';
    color: var(--bs-purple);
    font-weight: 700;
    font-size: 12px;
    background: var(--bs-purple-lt);
    width: 22px; height: 22px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    margin-top: 1px;
  }

  /* ─────────────────────────────────────────────
     VISUAL CARD
  ───────────────────────────────────────────── */
  .bs-visual-card {
    background: white;
    border-radius: 24px;
    padding: 2rem;
    box-shadow: 0 20px 60px rgba(108,95,199,0.11), 0 5px 18px rgba(0,0,0,0.04);
    border: 1px solid rgba(108,95,199,0.09);
    position: relative;
    overflow: hidden;
  }
  .bs-visual-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--bs-purple), var(--bs-violet));
  }
  .bs-visual-card__icon { font-size: 2.4rem; margin-bottom: 0.9rem; display: block; }
  .bs-visual-card__title {
    font-family: 'Noto Serif TC', serif;
    font-size: 17px;
    font-weight: 700;
    color: var(--bs-text);
    margin-bottom: 0.35rem;
  }
  .bs-visual-card__sub { font-size: 12.5px; color: var(--bs-text-lt); margin-bottom: 1.3rem; }

  .bs-stat-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.9rem;
    margin-top: 1rem;
  }
  .bs-stat-box {
    background: var(--bs-bg);
    border-radius: 14px;
    padding: 1rem;
    text-align: center;
    border: 1px solid rgba(108,95,199,0.08);
    transition: border-color var(--bs-ease), background var(--bs-ease);
  }
  .bs-stat-box:hover { border-color: rgba(108,95,199,0.2); background: var(--bs-purple-lt); }
  .bs-stat-box__num {
    font-family: 'Noto Serif TC', serif;
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--bs-purple);
    line-height: 1;
    margin-bottom: 3px;
  }
  .bs-stat-box__label { font-size: 11.5px; color: var(--bs-text-lt); }

  /* ─────────────────────────────────────────────
     STEP FLOW
  ───────────────────────────────────────────── */
  .bs-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 0.85rem;
    margin-top: 1.2rem;
  }
  .bs-step {
    background: var(--bs-bg);
    border-radius: 14px;
    padding: 1.1rem 0.8rem;
    border: 1px solid rgba(108,95,199,0.09);
    text-align: center;
    transition: transform var(--bs-ease), box-shadow var(--bs-ease);
  }
  .bs-step:hover { transform: translateY(-3px); box-shadow: 0 10px 28px rgba(108,95,199,0.11); }
  .bs-step__num {
    width: 28px; height: 28px;
    background: linear-gradient(135deg, var(--bs-purple), var(--bs-violet));
    border-radius: 50%;
    color: white;
    font-size: 12px;
    font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 0.6rem;
  }
  .bs-step__icon { font-size: 1.4rem; margin-bottom: 0.4rem; }
  .bs-step__title { font-size: 12.5px; font-weight: 700; color: var(--bs-text); margin-bottom: 0.25rem; }
  .bs-step__desc { font-size: 11px; color: var(--bs-text-lt); }

  /* ─────────────────────────────────────────────
     INFO CARDS
  ───────────────────────────────────────────── */
  .bs-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 0.9rem;
    margin-top: 1.8rem;
  }
  .bs-info-card {
    background: white;
    border-radius: 14px;
    padding: 1.2rem;
    border: 1px solid rgba(108,95,199,0.09);
    display: flex;
    gap: 0.9rem;
    align-items: flex-start;
    transition: border-color var(--bs-ease), transform var(--bs-ease), box-shadow var(--bs-ease);
  }
  .bs-info-card:hover {
    border-color: rgba(108,95,199,0.2);
    transform: translateY(-3px);
    box-shadow: 0 9px 26px rgba(108,95,199,0.09);
  }
  .bs-info-card__icon {
    width: 40px; height: 40px;
    border-radius: 11px;
    background: var(--bs-purple-lt);
    display: flex; align-items: center; justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
  }
  .bs-info-card__title { font-size: 13.5px; font-weight: 700; color: var(--bs-text); margin-bottom: 0.22rem; }
  .bs-info-card__desc { font-size: 12px; color: var(--bs-text-md); line-height: 1.6; }

  /* ─────────────────────────────────────────────
     PRICE HINT
  ───────────────────────────────────────────── */
  .bs-price-hint {
    background: linear-gradient(135deg, var(--bs-purple-lt) 0%, rgba(255,255,255,0.85) 100%);
    border: 1px solid rgba(108,95,199,0.18);
    border-left: 4px solid var(--bs-purple);
    border-radius: 14px;
    padding: 1.1rem 1.4rem;
    margin-top: 1.7rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
  }
  .bs-price-hint__text { font-size: 13.5px; color: var(--bs-text); font-weight: 500; }
  .bs-price-hint__price {
    font-family: 'Noto Serif TC', serif;
    font-size: 1.55rem;
    font-weight: 700;
    color: var(--bs-purple);
    white-space: nowrap;
  }
  .bs-price-hint__price small { font-size: 11.5px; font-weight: 400; color: var(--bs-text-lt); }

  /* ─────────────────────────────────────────────
     FAQ
  ───────────────────────────────────────────── */
  .bs-faq { margin-top: 1.8rem; display: flex; flex-direction: column; gap: 0.6rem; }
  .bs-faq__item {
    background: white;
    border: 1px solid rgba(108,95,199,0.1);
    border-radius: 12px;
    overflow: hidden;
  }
  .bs-faq__q {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.2rem;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--bs-text);
    cursor: pointer;
    user-select: none;
    transition: color var(--bs-ease);
  }
  .bs-faq__q:hover { color: var(--bs-purple); }
  .bs-faq__icon {
    width: 22px; height: 22px;
    background: var(--bs-purple-lt);
    color: var(--bs-purple);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
    transition: transform 0.28s, background 0.2s, color 0.2s;
  }
  .bs-faq__item.bs-open .bs-faq__icon {
    transform: rotate(45deg);
    background: var(--bs-purple);
    color: white;
  }
  .bs-faq__a {
    display: none;
    padding: 0.9rem 1.2rem 1rem;
    font-size: 13.5px;
    color: var(--bs-text-md);
    line-height: 1.85;
    border-top: 1px solid rgba(108,95,199,0.07);
  }
  .bs-faq__item.bs-open .bs-faq__a { display: block; }

  /* ─────────────────────────────────────────────
     CTA STRIP
  ───────────────────────────────────────────── */
  .bs-cta-strip {
    background: linear-gradient(135deg, var(--bs-purple) 0%, var(--bs-purple-dk) 100%);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-top: 3rem;
    position: relative;
    overflow: hidden;
  }
  .bs-cta-strip::after {
    content: '';
    position: absolute;
    right: -40px; top: -40px;
    width: 200px; height: 200px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    pointer-events: none;
  }
  .bs-cta-strip__title {
    font-family: 'Noto Serif TC', serif;
    font-size: 1.4rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.3rem;
  }
  .bs-cta-strip__sub { font-size: 13px; color: rgba(255,255,255,0.7); }
  .bs-cta-strip__btns { display: flex; gap: 0.7rem; flex-wrap: wrap; flex-shrink: 0; }

  /* ─────────────────────────────────────────────
     SECTION DIVIDER
  ───────────────────────────────────────────── */
  .bs-divider {
    max-width: 1280px;
    margin: 0 auto;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(108,95,199,0.14), transparent);
  }

  /* ─────────────────────────────────────────────
     ANIMATIONS
  ───────────────────────────────────────────── */
  @keyframes bs-fade-up {
    from { opacity: 0; transform: translateY(18px); }
    to   { opacity: 1; transform: translateY(0); }
  }
  .bs-reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.52s ease, transform 0.52s ease;
  }
  .bs-reveal.bs-visible { opacity: 1; transform: translateY(0); }

  /* ─────────────────────────────────────────────
     RESPONSIVE
  ───────────────────────────────────────────── */
  @media (max-width: 900px) {
    .bs-row { grid-template-columns: 1fr; gap: 2rem; }
    .bs-row--rev { direction: ltr; }
    .bs-section { padding: 3.5rem 1.4rem; }
  }
  @media (max-width: 600px) {
    .bs-section { padding: 2.8rem 1.1rem; }
    .bs-steps { grid-template-columns: 1fr 1fr; }
    .bs-cta-strip { flex-direction: column; text-align: center; }
    .bs-cta-strip__btns { justify-content: center; }
    .bs-price-hint { flex-direction: column; align-items: flex-start; }
  }