/* ============================================================
   全屋估 (澳門版) — Styles
   Design: Modern Minimalist  |  Colors: Slate + Amber accent
   ============================================================ */

/* ---------- Reset & Tokens ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #FFFFFF;
  --bg-alt:      #F8FAFC;
  --border:      #E2E8F0;
  --text-main:   #0F172A;
  --text-sub:    #64748B;
  --text-light:  #94A3B8;
  --accent:      #F59E0B;
  --accent-dark: #D97706;
  --accent-bg:   #FFFBEB;
  --green:       #10B981;
  --radius-sm:   8px;
  --radius-md:   16px;
  --radius-lg:   24px;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.08);
  --shadow-md:   0 4px 16px rgba(0,0,0,.08);
  --shadow-lg:   0 12px 40px rgba(0,0,0,.12);
  --transition:  .2s ease;
  --max-w:       1200px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-main);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Utilities ---------- */
.container  { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.text-accent { color: var(--accent); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
  font-family: inherit;
}
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(245,158,11,.35); }
.btn-ghost   { background: transparent; color: var(--text-main); border-color: var(--border); }
.btn-ghost:hover { background: var(--bg-alt); }
.btn-lg      { padding: 16px 32px; font-size: 1.05rem; border-radius: var(--radius-md); }
.btn-full    { width: 100%; }

.section-header { text-align: center; margin-bottom: 56px; }
.section-badge {
  display: inline-block;
  padding: 6px 14px;
  background: var(--accent-bg);
  color: var(--accent-dark);
  border-radius: 99px;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-header h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 900; letter-spacing: -.03em; line-height: 1.2; margin-bottom: 12px; }
.section-header p  { color: var(--text-sub); font-size: 1.05rem; }

/* ---------- Step badge ---------- */
.bi-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px; height: 26px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  font-size: .8rem;
  font-weight: 800;
  margin-right: 8px;
  flex-shrink: 0;
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.navbar.scrolled { border-bottom-color: var(--border); box-shadow: var(--shadow-sm); }
.nav-inner { display: flex; align-items: center; height: 64px; gap: 40px; }
.logo { font-size: 1.4rem; font-weight: 900; color: var(--text-main); text-decoration: none; }
.logo-dot { color: var(--accent); }
.nav-links { display: flex; gap: 32px; list-style: none; margin-left: auto; }
.nav-links a { color: var(--text-sub); text-decoration: none; font-size: .9rem; font-weight: 500; transition: color var(--transition); }
.nav-links a:hover { color: var(--text-main); }
.nav-cta { margin-left: 16px; padding: 10px 20px; font-size: .9rem; }
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; margin-left: auto; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text-main); border-radius: 2px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 120px 0 80px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #FFF8E7 0%, #FFFFFF 50%, #F0F9FF 100%);
  z-index: 0;
}
.hero-bg::after {
  content: '';
  position: absolute;
  width: 700px; height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,158,11,.08), transparent 70%);
  top: -200px; right: -200px;
}
.hero-content { position: relative; z-index: 1; max-width: 760px; }
.hero-badge {
  display: inline-block;
  padding: 8px 16px;
  background: var(--accent-bg);
  color: var(--accent-dark);
  border: 1px solid rgba(245,158,11,.3);
  border-radius: 99px;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: .02em;
}
.hero-title { font-size: clamp(2.4rem, 5vw, 4.2rem); font-weight: 900; line-height: 1.1; letter-spacing: -.04em; margin-bottom: 24px; }
.hero-subtitle { font-size: clamp(1rem, 2vw, 1.15rem); color: var(--text-sub); margin-bottom: 36px; line-height: 1.75; }
.hero-subtitle strong { color: var(--text-main); }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 56px; }
.hero-stats { display: flex; align-items: center; gap: 32px; flex-wrap: wrap; }
.stat-item { text-align: center; }
.stat-number { font-size: 2.2rem; font-weight: 900; color: var(--text-main); letter-spacing: -.04em; }
.stat-item span:nth-child(2) { font-size: 1.2rem; font-weight: 700; color: var(--accent); }
.stat-label { display: block; font-size: .78rem; color: var(--text-sub); font-weight: 500; margin-top: 2px; }
.stat-divider { width: 1px; height: 40px; background: var(--border); }
.scroll-hint { position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%); color: var(--text-light); animation: bounce 2s infinite; z-index: 1; }
@keyframes bounce { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(8px)} }

/* ---------- Value Props ---------- */
.value-props { padding: 80px 0; background: var(--bg-alt); }
.vp-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.vp-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 36px 28px; transition: transform var(--transition), box-shadow var(--transition); }
.vp-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.vp-card--highlight { background: var(--text-main); color: #fff; border-color: var(--text-main); }
.vp-card--highlight p { color: rgba(255,255,255,.7); }
.vp-icon { width: 52px; height: 52px; margin-bottom: 20px; color: var(--accent); }
.vp-card--highlight .vp-icon { color: var(--accent); }
.vp-icon svg { width: 100%; height: 100%; }
.vp-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.vp-card p  { font-size: .9rem; color: var(--text-sub); line-height: 1.7; }

/* ---------- Calculator section wrapper ---------- */
.calculator { padding: 100px 0 80px; }

/* ---------- Basic Info Panel ---------- */
.basic-info-panel {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
}
.bi-title {
  display: flex;
  align-items: center;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 24px;
}
.bi-grid {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-bottom: 24px;
}
.bi-field { display: flex; flex-direction: column; gap: 6px; min-width: 120px; }
.bi-field label { font-size: .82rem; font-weight: 600; color: var(--text-sub); white-space: nowrap; }

.area-input-wrap { display: flex; align-items: center; gap: 0; }
.area-input-wrap input[type="number"] {
  width: 90px;
  padding: 10px 12px;
  border: 1.5px solid var(--border);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  outline: none;
  font-family: inherit;
}
.area-input-wrap input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(245,158,11,.15); }
.area-unit {
  padding: 10px 12px;
  background: var(--bg-alt);
  border: 1.5px solid var(--border);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-sub);
}

/* Counter widget */
.counter-row {
  display: flex;
  align-items: center;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  width: fit-content;
}
.cnt-btn {
  width: 36px; height: 38px;
  background: var(--bg-alt);
  border: none;
  font-size: 1.2rem;
  font-weight: 300;
  color: var(--text-main);
  cursor: pointer;
  transition: background var(--transition);
}
.cnt-btn:hover { background: var(--border); }
.cnt-val {
  min-width: 36px;
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
  padding: 0 8px;
}

/* Toggle switch */
.toggle-row { display: flex; align-items: center; gap: 10px; height: 38px; }
.toggle-switch { position: relative; display: inline-block; width: 48px; height: 26px; }
.toggle-switch input { opacity: 0; width: 0; height: 0; position: absolute; }
.toggle-track {
  position: absolute;
  inset: 0;
  background: var(--border);
  border-radius: 99px;
  cursor: pointer;
  transition: background var(--transition);
}
.toggle-track::after {
  content: '';
  position: absolute;
  left: 3px; top: 3px;
  width: 20px; height: 20px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
}
.toggle-switch input:checked + .toggle-track { background: var(--accent); }
.toggle-switch input:checked + .toggle-track::after { transform: translateX(22px); }
.toggle-row span { font-size: .9rem; font-weight: 600; color: var(--text-main); min-width: 28px; }

/* ---------- Detail Layout ---------- */
.calc-detail-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 28px;
  align-items: start;
}
.cats-header-note {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .875rem;
  font-weight: 600;
  color: var(--text-sub);
  margin-bottom: 16px;
}
.note-tag {
  margin-left: auto;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 3px 10px;
  font-size: .72rem;
  color: var(--text-sub);
}

/* ---------- Category accordion ---------- */
.cat-block {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.cat-block:has(.cat-check:checked) { border-color: rgba(245,158,11,.4); }

.cat-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  cursor: pointer;
  user-select: none;
  background: var(--bg);
  transition: background var(--transition);
}
.cat-header:hover { background: var(--accent-bg); }

.cat-check-wrap { display: flex; align-items: center; flex-shrink: 0; }
.cat-check {
  width: 18px; height: 18px;
  cursor: pointer;
  accent-color: var(--accent);
}
.cat-icon { font-size: 1.15rem; flex-shrink: 0; }
.cat-name { font-size: .95rem; font-weight: 700; flex: 1; }
.cat-subtotal { font-size: .85rem; font-weight: 700; color: var(--accent-dark); margin-right: 8px; }
.cat-arrow { font-size: .85rem; color: var(--text-light); flex-shrink: 0; width: 14px; text-align: center; }

/* ---------- Items table ---------- */
.cat-body { border-top: 1px solid var(--border); overflow-x: auto; }

.items-table { min-width: 600px; }

.items-thead {
  display: grid;
  grid-template-columns: 24px 1fr 68px 90px 160px 100px;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  font-size: .72rem;
  font-weight: 700;
  color: var(--text-sub);
  text-transform: uppercase;
  letter-spacing: .04em;
}

.item-row {
  display: grid;
  grid-template-columns: 24px 1fr 68px 90px 160px 100px;
  gap: 8px;
  padding: 9px 16px;
  border-bottom: 1px solid var(--border);
  align-items: center;
  transition: background var(--transition);
}
.item-row:last-child { border-bottom: none; }
.item-row:hover { background: var(--bg-alt); }

.item-col { font-size: .83rem; }

.item-check-col { display: flex; align-items: center; justify-content: center; }
.item-check {
  width: 16px; height: 16px;
  cursor: pointer;
  accent-color: var(--accent);
  flex-shrink: 0;
}

.item-name-col {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.4;
  font-weight: 500;
}
.item-hint {
  font-size: .72rem;
  color: var(--text-light);
  font-weight: 400;
}

.item-unit-col { color: var(--text-sub); font-size: .78rem; }

.item-qty-col input[type="number"] {
  width: 80px;
  padding: 6px 8px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .85rem;
  font-weight: 600;
  text-align: center;
  color: var(--text-main);
  outline: none;
  font-family: inherit;
  -moz-appearance: textfield;
}
.item-qty-col input::-webkit-inner-spin-button,
.item-qty-col input::-webkit-outer-spin-button { opacity: 1; }
.item-qty-col input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(245,158,11,.12); }

.item-price-col { font-size: .78rem; color: var(--text-sub); }
.item-subtot-col { font-size: .83rem; font-weight: 700; color: var(--text-main); text-align: right; }

/* ---------- Sticky Summary ---------- */
.calc-summary-col { position: sticky; top: 84px; }

.calc-summary {
  background: var(--text-main);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-lg);
}

.summary-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.summary-top h3 {
  font-size: .95rem;
  font-weight: 700;
  display: flex;
  align-items: center;
}
.summary-top .bi-step { background: var(--accent); }
.summary-reset {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  color: rgba(255,255,255,.7);
  border-radius: var(--radius-sm);
  padding: 5px 10px;
  font-size: .75rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}
.summary-reset:hover { background: rgba(255,255,255,.2); color: #fff; }

.summary-rows { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; min-height: 40px; }
.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .82rem;
  color: rgba(255,255,255,.8);
  padding: 4px 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.summary-row:last-child { border-bottom: none; }
.summary-empty { font-size: .82rem; color: rgba(255,255,255,.4); font-style: italic; }

.summary-total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0 4px;
  border-top: 1px solid rgba(255,255,255,.2);
  font-weight: 700;
  font-size: 1rem;
}
#grandTotalMid { font-size: 1.4rem; color: var(--accent); font-weight: 900; }

.summary-range-row { font-size: .75rem; color: rgba(255,255,255,.5); margin-bottom: 6px; }
.summary-note { font-size: .7rem; color: rgba(255,255,255,.35); margin-bottom: 20px; line-height: 1.5; }

.calc-summary .btn-primary { background: var(--accent); border-color: var(--accent); }
.calc-summary .btn-primary:hover { background: var(--accent-dark); }

/* ---------- How It Works ---------- */
.how-it-works { padding: 100px 0; background: var(--bg-alt); }
.hiw-grid { display: flex; align-items: flex-start; gap: 0; justify-content: center; flex-wrap: wrap; }
.hiw-card { flex: 1; min-width: 220px; max-width: 300px; text-align: center; padding: 32px 24px; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.hiw-arrow { display: flex; align-items: center; padding: 0 16px; margin-top: 60px; color: var(--text-light); }
.hiw-arrow svg { width: 40px; }
.hiw-num { font-size: 3rem; font-weight: 900; color: var(--accent); opacity: .25; line-height: 1; margin-bottom: 12px; letter-spacing: -.04em; }
.hiw-icon { width: 52px; height: 52px; margin: 0 auto 16px; color: var(--accent); }
.hiw-icon svg { width: 100%; height: 100%; }
.hiw-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }
.hiw-card p  { font-size: .875rem; color: var(--text-sub); line-height: 1.7; }

/* ---------- Testimonials ---------- */
.testimonials { padding: 100px 0; }
.testi-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.testi-card { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; transition: transform var(--transition), box-shadow var(--transition); }
.testi-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.testi-card--featured { background: var(--text-main); border-color: var(--text-main); color: #fff; }
.testi-card--featured .testi-rating { color: var(--accent); }
.testi-card--featured .testi-quote { color: rgba(255,255,255,.85); }
.testi-card--featured strong { color: #fff; }
.testi-card--featured span { color: rgba(255,255,255,.5); }
.testi-rating { color: var(--accent); font-size: 1.1rem; margin-bottom: 14px; letter-spacing: 2px; }
.testi-quote { font-size: .9rem; color: var(--text-sub); line-height: 1.75; margin-bottom: 20px; font-style: italic; }
.testi-author { display: flex; align-items: center; gap: 12px; }
.testi-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--accent); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: .95rem; flex-shrink: 0; }
.testi-author strong { display: block; font-size: .9rem; font-weight: 700; }
.testi-author span   { font-size: .78rem; color: var(--text-sub); }

/* ---------- FAQ ---------- */
.faq { padding: 100px 0; background: var(--bg-alt); }
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-md); margin-bottom: 12px; overflow: hidden; transition: box-shadow var(--transition); }
.faq-item[open] { box-shadow: var(--shadow-md); }
.faq-item summary { padding: 20px 24px; font-weight: 600; font-size: .95rem; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px; user-select: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 1.4rem; color: var(--accent); transition: transform var(--transition); flex-shrink: 0; font-weight: 300; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-body { padding: 0 24px 20px; font-size: .875rem; color: var(--text-sub); line-height: 1.8; }
.faq-body strong { color: var(--text-main); }

/* ---------- Contact CTA ---------- */
.contact-cta { padding: 100px 0; }
.contact-wrapper { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: start; }
.contact-info .section-badge { display: inline-block; margin-bottom: 16px; }
.contact-info h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 900; letter-spacing: -.03em; margin-bottom: 16px; line-height: 1.2; }
.contact-info p  { color: var(--text-sub); line-height: 1.7; margin-bottom: 28px; }
.contact-perks { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.contact-perks li { font-size: .9rem; font-weight: 500; color: var(--text-main); }

.contact-form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: .85rem; font-weight: 600; color: var(--text-main); }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: .9rem;
  color: var(--text-main);
  background: var(--bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  -webkit-appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(245,158,11,.15); }
.form-group input.error { border-color: #EF4444; }
.form-group textarea { resize: vertical; min-height: 80px; }
.form-group select { cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2364748B' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }
.form-privacy { font-size: .75rem; color: var(--text-light); text-align: center; margin-top: 4px; }

/* ---------- Footer ---------- */
.footer { background: var(--text-main); color: rgba(255,255,255,.7); padding: 64px 0 0; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .logo { color: #fff; }
.footer-brand p { margin-top: 12px; font-size: .875rem; line-height: 1.7; color: rgba(255,255,255,.5); }
.footer-links h4, .footer-contact h4 { color: #fff; font-size: .85rem; font-weight: 700; margin-bottom: 16px; text-transform: uppercase; letter-spacing: .05em; }
.footer-links ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-links li, .footer-links a { font-size: .875rem; color: rgba(255,255,255,.5); text-decoration: none; transition: color var(--transition); }
.footer-links a:hover { color: var(--accent); }
.footer-contact p { font-size: .875rem; margin-bottom: 6px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 20px 24px; text-align: center; font-size: .8rem; color: rgba(255,255,255,.35); }
.footer-bottom a { color: rgba(255,255,255,.5); text-decoration: none; }
.footer-bottom a:hover { color: var(--accent); }

/* ---------- Toast ---------- */
.toast { position: fixed; bottom: 32px; left: 50%; transform: translateX(-50%) translateY(100px); background: var(--text-main); color: #fff; padding: 14px 24px; border-radius: var(--radius-md); font-size: .9rem; font-weight: 500; box-shadow: var(--shadow-lg); z-index: 999; opacity: 0; transition: opacity .3s, transform .3s; white-space: nowrap; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Animations ---------- */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ---------- Responsive: 1024px ---------- */
@media (max-width: 1024px) {
  .calc-detail-layout { grid-template-columns: 1fr; }
  .calc-summary-col { position: static; }
  .calc-summary { background: var(--text-main); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .contact-wrapper { grid-template-columns: 1fr; gap: 48px; }
  .testi-grid { grid-template-columns: 1fr 1fr; }
  .testi-card:last-child { display: none; }
  .hiw-arrow { display: none; }
  .hiw-grid { gap: 20px; }
}

/* ---------- Responsive: 768px ---------- */
@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .vp-grid { grid-template-columns: 1fr; }
  .testi-grid { grid-template-columns: 1fr; }
  .testi-card:last-child { display: block; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hiw-grid { flex-direction: column; align-items: center; }
  .bi-grid { flex-direction: column; gap: 16px; }
  .basic-info-panel { padding: 24px 20px; }
  .items-thead, .item-row { grid-template-columns: 24px 1fr 60px 80px 120px 85px; gap: 6px; padding: 8px 12px; }
  .item-qty-col input { width: 68px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
}

/* ---------- Responsive: 480px ---------- */
@media (max-width: 480px) {
  .stat-divider { display: none; }
  .hero-stats { justify-content: space-around; width: 100%; }
  .items-table { min-width: 520px; }
  .item-price-col { font-size: .72rem; }
}