/* WindTasks landing — minimal shared CSS.
 * 配色對齊 App 本體(暖橘 #FF8A4C + 米色 + 深藍灰)。
 * 行動裝置優先;桌機自動套用更舒適的閱讀寬度。 */
:root {
  --primary: #FF8A4C;
  --primary-dark: #E66E2C;
  --dark: #16243D;
  --muted: #5B6B86;
  --faint: #8FA0BE;
  --cream: #FAF7F2;
  --cream-card: #FFFFFF;
  --border: #E3E8F0;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Microsoft JhengHei", "PingFang TC", "Segoe UI", sans-serif;
  color: var(--dark);
  background: var(--cream);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Top nav — small, breadcrumb-style */
.nav {
  background: var(--cream-card);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav-inner {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  font-weight: 800;
  font-size: 18px;
  color: var(--dark);
  letter-spacing: -0.5px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.brand span { color: var(--primary); }
.brand-icon {
  width: 22px;
  height: 22px;
  color: var(--primary);
  flex-shrink: 0;
}
.nav-links { display: flex; gap: 18px; font-size: 13px; }
.nav-links a { color: var(--muted); }

/* Page container */
.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}
.container-wide {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Headings */
h1 { font-size: 28px; font-weight: 800; letter-spacing: -0.5px; margin: 0 0 8px; }
h2 { font-size: 17px; font-weight: 800; color: var(--dark); margin: 32px 0 12px; }
h3 { font-size: 15px; font-weight: 700; color: var(--muted); margin: 18px 0 8px; }
p { font-size: 14px; color: var(--muted); margin: 0 0 10px; }
ul { list-style: none; padding: 0; margin: 0 0 10px; }
ul li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 6px;
  line-height: 1.65;
}
ul li::before {
  content: "•";
  position: absolute;
  left: 4px;
  color: var(--faint);
}
ul ul { margin-top: 6px; margin-left: 8px; }
ul ul li::before { content: "○"; font-size: 9px; top: 2px; }
strong { color: var(--dark); font-weight: 700; }

/* Date stamp at top of legal pages */
.updated {
  font-size: 13px;
  color: var(--faint);
  margin-bottom: 24px;
}

/* Contact info card */
.contact-card {
  margin-top: 14px;
  padding: 18px 20px;
  background: var(--cream-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
}
.contact-card strong { color: var(--dark); }

/* Footer */
footer {
  background: var(--dark);
  color: #B5C2D6;
  padding: 32px 24px;
  font-size: 13px;
  margin-top: 60px;
}
footer .footer-inner {
  max-width: 920px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
}
footer .footer-brand {
  font-weight: 800;
  color: #fff;
  font-size: 16px;
  margin-bottom: 4px;
}
footer .footer-tag { color: #8FA0BE; font-size: 12px; }
footer nav { display: flex; gap: 20px; flex-wrap: wrap; }
footer nav a { color: #B5C2D6; }
footer .copyright { color: #5B6B86; font-size: 12px; width: 100%; margin-top: 20px; }

/* Landing-specific (index.html) */
.hero {
  padding: 80px 24px 60px;
  text-align: center;
  background: linear-gradient(180deg, var(--cream) 0%, #FFF4EC 100%);
}
.hero h1 {
  font-size: 44px;
  letter-spacing: -1px;
  margin-bottom: 12px;
}
.hero .tagline {
  font-size: 18px;
  color: var(--muted);
  margin-bottom: 24px;
}
.hero .brand-orange { color: var(--primary); }

.features {
  max-width: 920px;
  margin: 0 auto;
  padding: 40px 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature {
  background: var(--cream-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
}
.feature .icon { font-size: 28px; margin-bottom: 12px; }
.feature h3 {
  font-size: 16px;
  color: var(--dark);
  margin: 0 0 6px;
}
.feature p { font-size: 13px; margin: 0; }

.coming-soon {
  text-align: center;
  padding: 40px 24px 80px;
  color: var(--muted);
}
.coming-soon .badge {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 12px;
}

@media (max-width: 720px) {
  .hero { padding: 60px 24px 40px; }
  .hero h1 { font-size: 32px; }
  .hero .tagline { font-size: 16px; }
  .features { grid-template-columns: 1fr; padding: 20px 24px; }
}

/* ─── Pain-points 共鳴段 ────────────────────────────────────────
 * Hero 之後、Features 之前,情緒鉤子段落。
 * 設計風格:editorial / SaaS premium + WindTasks 風元素。
 *   - 背景:流動風線 SVG(low-opacity, drift 動畫)
 *   - 標題上方:三條風 motif(對齊 PPT 封面風格的橘+淺橘+灰)
 *   - 8 張卡 2 欄 grid,hover 微浮起 + 邊框轉橘
 */
.pain-points {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #FFFFFF 0%, var(--cream) 100%);
  padding: 100px 24px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.pain-inner { position: relative; z-index: 1; }

/* 三條風 motif — 對齊既有 PPT 封面風格 */
.wind-motif {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  margin: 0 auto 20px;
  width: 100px;
}
.wind-bar {
  height: 3px;
  border-radius: 2px;
  display: block;
}
.wind-bar-1 {
  width: 60px;
  background: linear-gradient(90deg, transparent 0%, var(--primary) 100%);
  align-self: flex-end;
}
.wind-bar-2 {
  width: 100px;
  background: linear-gradient(90deg, transparent 0%, #FFB07F 100%);
  align-self: flex-end;
}
.wind-bar-3 {
  width: 45px;
  background: linear-gradient(90deg, transparent 0%, var(--muted) 100%);
  align-self: flex-end;
  opacity: 0.7;
}

.pain-eyebrow {
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.5px;
  color: var(--primary);
  margin: 0 0 14px;
  text-transform: uppercase;
}
.pain-title {
  text-align: center;
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--dark);
  margin: 0 0 14px;
  line-height: 1.2;
}
.pain-subtitle {
  text-align: center;
  font-size: 16px;
  color: var(--muted);
  margin: 0 auto 56px;
  max-width: 580px;
  line-height: 1.6;
}
.pain-grid {
  max-width: 920px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
/* 卡片有機自然形狀:
   - 不對稱圓角(像被風吹過的紙 / 葉子形狀),奇偶卡片鏡像配對
   - 層疊柔軟陰影,雲一般的浮起感,而不是方塊框
   - hover 時微微傾斜 + 浮起,像被風吹起的瞬間
   - 卡片背景帶極淡的對角線漸層,模擬光與風的方向 */
.pain-card {
  position: relative;
  background: linear-gradient(135deg, #FFFFFF 0%, #FFFAF5 100%);
  border: 1px solid rgba(227, 232, 240, 0.7);
  /* 不對稱圓角:左上 + 右下大圓 / 右上 + 左下小圓 → 像被風吹彎的紙片 */
  border-radius: 28px 10px 28px 10px;
  padding: 26px 28px;
  display: flex;
  align-items: center;
  gap: 18px;
  /* 雲狀層疊陰影:近層細微 + 遠層擴散 */
  box-shadow:
    0 1px 2px rgba(22, 36, 61, 0.03),
    0 4px 16px -8px rgba(22, 36, 61, 0.06);
  transition:
    transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1),
    box-shadow 0.28s ease,
    border-color 0.28s ease;
}
/* 偶數卡:圓角鏡像反向 → 整排呈現左右交替的有機節奏 */
.pain-card:nth-child(even) {
  border-radius: 10px 28px 10px 28px;
  background: linear-gradient(225deg, #FFFFFF 0%, #FFFAF5 100%);
}
.pain-card:hover {
  /* 浮起 + 微微傾斜(奇 -0.6deg / 偶 +0.6deg)→ 像葉子被風托起 */
  transform: translateY(-4px) rotate(-0.6deg);
  border-color: rgba(255, 138, 76, 0.4);
  box-shadow:
    0 2px 4px rgba(22, 36, 61, 0.04),
    0 18px 36px -12px rgba(255, 138, 76, 0.18),
    0 28px 52px -20px rgba(22, 36, 61, 0.12);
}
.pain-card:nth-child(even):hover {
  transform: translateY(-4px) rotate(0.6deg);
}
/* icon:正圓形(自然有機),柔光環繞 → 像太陽 / 風中泡泡 */
.pain-card-icon {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #FFF4EC 0%, #FFE0CC 60%, #FFD4B8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
  box-shadow:
    inset 0 1px 2px rgba(255, 255, 255, 0.8),
    0 3px 10px -2px rgba(255, 138, 76, 0.28);
}
.pain-card-text {
  font-size: 15px;
  font-weight: 500;
  color: var(--dark);
  line-height: 1.6;
  margin: 0;
  position: relative;
  z-index: 1;
}
.pain-cta {
  text-align: center;
  margin: 56px auto 0;
  max-width: 620px;
  font-size: 16px;
  color: var(--muted);
  line-height: 1.85;
}
.pain-cta strong {
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.3px;
}

@media (max-width: 720px) {
  .pain-points { padding: 64px 20px; }
  .wind-motif { width: 80px; gap: 3px; margin-bottom: 16px; }
  .wind-bar-1 { width: 48px; }
  .wind-bar-2 { width: 80px; }
  .wind-bar-3 { width: 36px; }
  .pain-eyebrow { font-size: 10px; letter-spacing: 2px; margin-bottom: 10px; }
  .pain-title { font-size: 26px; }
  .pain-subtitle { font-size: 14px; margin-bottom: 36px; }
  .pain-grid { grid-template-columns: 1fr; gap: 12px; }
  .pain-card { padding: 18px 20px; gap: 14px; }
  .pain-card-icon { width: 44px; height: 44px; font-size: 20px; border-radius: 12px; }
  .pain-card-text { font-size: 14px; }
  .pain-cta { margin-top: 40px; font-size: 14px; }
}

/* Footer + nav 共用 mobile 調整(其餘響應式樣式已在 hero/features/how/cta 各自段落內) */
@media (max-width: 720px) {
  .nav-links { gap: 14px; }
  footer .footer-inner { flex-direction: column; gap: 16px; }
}