/* 用途著陸頁共用樣式（訪談逐字稿 / 長影音 recap / 學習紀錄）
   色系對齊 home.html 與 app（Tidepool tokens）。無 emoji。 */
:root {
  --mm-ink: #22303c; --mm-ink-2: #4c5b68; --mm-ink-3: #74838f;
  --mm-navy: #1a2c3e; --mm-navy-deep: #0e1a26;
  --mm-cream: #f5ebd6; --mm-cream-2: #cdbfa6;
  --mm-brass: #d4985f; --mm-brass-deep: #b87a3f;
  --mm-coral: #c94f42;
  --mm-line: rgba(34,48,60,0.12); --mm-card: #fff; --mm-page: #f4f6f8;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: var(--mm-page); color: var(--mm-ink);
  font-family: 'Noto Sans TC', system-ui, -apple-system, sans-serif;
  line-height: 1.7; -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }

/* nav */
.ld-nav {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1080px; margin: 0 auto; padding: 16px 20px;
}
.ld-nav .brand { font-weight: 800; font-size: 16px; color: var(--mm-ink); }
.ld-nav .brand .beta {
  font-size: 9.5px; letter-spacing: .08em; color: var(--mm-brass-deep);
  border: 1px solid rgba(184,122,63,.5); border-radius: 3px; padding: 1px 5px; vertical-align: 2px; margin-left: 4px;
}
.ld-nav .login {
  font-size: 13.5px; padding: 7px 16px; border-radius: 999px;
  border: 1px solid var(--mm-line); color: var(--mm-ink-2);
}

/* hero */
.hero {
  background: linear-gradient(160deg, var(--mm-navy) 0%, var(--mm-navy-deep) 100%);
  color: var(--mm-cream); text-align: center; padding: 56px 20px 72px;
  position: relative; overflow: hidden;
}
.hero::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0; height: 34px;
  background: var(--mm-page); clip-path: ellipse(62% 100% at 50% 100%);
}
.hero .eyebrow {
  font-size: 12.5px; letter-spacing: .16em; color: var(--mm-brass);
  text-transform: uppercase; margin-bottom: 16px; font-weight: 600;
}
.hero h1 { font-size: 38px; font-weight: 800; line-height: 1.3; letter-spacing: .01em; max-width: 640px; margin: 0 auto; }
.hero h1 .br { color: var(--mm-brass); }
.hero .sub { font-size: 16.5px; opacity: .92; max-width: 520px; margin: 20px auto 30px; line-height: 1.8; }
.btn-cta {
  display: inline-block; background: var(--mm-brass); color: var(--mm-navy-deep);
  font-weight: 800; font-size: 16px; padding: 15px 44px; border-radius: 999px;
  box-shadow: 0 6px 20px rgba(212,152,95,.38); position: relative; z-index: 2;
  transition: filter .15s, transform .15s;
}
.btn-cta:hover { filter: brightness(1.07); transform: translateY(-2px); }
.hero .note { margin-top: 14px; font-size: 12.5px; opacity: .78; position: relative; z-index: 2; }

/* sections */
section.block { padding: 46px 0 8px; }
.kicker {
  text-align: center; font-family: ui-monospace, monospace; font-size: 11px;
  letter-spacing: .2em; text-transform: uppercase; color: var(--mm-brass-deep); margin-bottom: 8px;
}
.h2 { text-align: center; font-size: 25px; font-weight: 800; margin-bottom: 28px; color: var(--mm-ink); }
.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; }
.card {
  background: var(--mm-card); border: 1px solid var(--mm-line); border-radius: 14px;
  padding: 22px; box-shadow: 0 1px 3px rgba(28,39,51,.04);
}
.card .n { font-size: 13px; font-weight: 800; color: var(--mm-brass-deep); margin-bottom: 8px; font-family: ui-monospace, monospace; }
.card h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 8px; color: var(--mm-ink); }
.card p { font-size: 14px; color: var(--mm-ink-2); line-height: 1.75; }

/* pain → gain */
.painrow { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.painrow .col { border-radius: 14px; padding: 22px; }
.painrow .pain { background: rgba(201,79,66,.06); border: 1px solid rgba(201,79,66,.2); }
.painrow .gain { background: rgba(212,152,95,.08); border: 1px solid rgba(212,152,95,.28); }
.painrow h3 { font-size: 15px; font-weight: 800; margin-bottom: 12px; }
.painrow .pain h3 { color: var(--mm-coral); }
.painrow .gain h3 { color: var(--mm-brass-deep); }
.painrow ul { list-style: none; }
.painrow li { font-size: 14px; color: var(--mm-ink-2); padding: 5px 0 5px 18px; position: relative; line-height: 1.6; }
.painrow li::before { content: ''; position: absolute; left: 0; top: 13px; width: 7px; height: 7px; border-radius: 50%; }
.painrow .pain li::before { background: var(--mm-coral); }
.painrow .gain li::before { background: var(--mm-brass); }

/* faq */
.faq details {
  background: var(--mm-card); border: 1px solid var(--mm-line); border-radius: 12px;
  padding: 4px 18px; margin-bottom: 10px;
}
.faq summary { font-size: 15px; font-weight: 700; color: var(--mm-ink); padding: 14px 0; cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '＋'; float: right; color: var(--mm-brass-deep); }
.faq details[open] summary::after { content: '－'; }
.faq p { font-size: 14px; color: var(--mm-ink-2); padding: 0 0 16px; line-height: 1.8; }

/* final cta */
.finalcta { text-align: center; padding: 52px 20px 40px; }
.finalcta h2 { font-size: 26px; font-weight: 800; margin-bottom: 10px; }
.finalcta p { font-size: 15px; color: var(--mm-ink-2); margin-bottom: 24px; }

/* footer */
footer.ld-foot {
  text-align: center; padding: 26px 20px 40px; color: var(--mm-ink-3);
  font-size: 12.5px; border-top: 1px solid var(--mm-line); margin-top: 30px;
}
footer.ld-foot a { color: var(--mm-ink-3); }
footer.ld-foot .sep { margin: 0 8px; opacity: .5; }

@media (max-width: 560px) {
  .hero h1 { font-size: 29px; }
  .painrow { grid-template-columns: 1fr; }
}