/* StitchDuck site styles */
* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  color-scheme: light dark;
  --page-from: #FFF7E3; --page-to: #FCEBC4;
  --panel: #FEF7E9; --card: #FFFFFF; --bar: rgba(255, 250, 236, .88);
  --heading: #423B38; --body: #554D49; --muted: #726864; --eyebrow: #948A84;
  --accent: #E8804A; --accent-text: #A65A41; --on-accent: #FFFFFF;
  --border: #F0E3C6; --divider: #F3E7CB; --border-strong: #D9CDB6;
  --candy-blue: #DAE8F1; --on-candy-blue: #4B6988;
  --candy-pink: #FECFC9; --on-candy-pink: #904B49;
  --candy-peach: #FEBC9A; --on-peach: #774B2B;
  --candy-butter: #FEE2A3; --on-candy-butter: #75591C;
  --soft-fill: #FFF2DF; --soft-border: #FFDDB0;
  --badge-bg: #2C2823; --badge-fg: #FFFFFF;
  --frame-bg: #FFFDF6;
  --grid-line: rgba(180, 165, 136, .30);
  --shadow-accent: 0 6px 16px -6px rgba(226, 155, 95, .5);
  --shadow-hero: 0 10px 24px -10px rgba(226, 155, 95, .6);
}

@media (prefers-color-scheme: dark) {
  :root {
    --page-from: #241C15; --page-to: #1C150F;
    --panel: #2B2219; --card: #322820; --bar: rgba(36, 28, 21, .88);
    --heading: #F3EAE0; --body: #D8CCC0; --muted: #B3A597; --eyebrow: #8F8172;
    --accent: #E8804A; --accent-text: #EDA177;
    --border: #3E3227; --divider: #3A2F24; --border-strong: #544434;
    --candy-blue: #2F3B47; --on-candy-blue: #A9C6DE;
    --candy-pink: #452F31; --on-candy-pink: #F3B8B4;
    --candy-peach: #473425; --on-peach: #F1BE9C;
    --candy-butter: #453B20; --on-candy-butter: #EFD794;
    --soft-fill: #3A2E21; --soft-border: #544434;
    --badge-bg: #F3EAE0; --badge-fg: #241C15;
    --grid-line: rgba(255, 255, 255, .06);
    --shadow-accent: 0 6px 16px -8px rgba(0, 0, 0, .5);
    --shadow-hero: 0 10px 24px -12px rgba(0, 0, 0, .6);
  }
}

/* Language switch (EN / 简 / 繁): html[data-lang] is set by lang.js; without JS the English text shows. */
html:not([data-lang="zh"]) .l-zh { display: none !important; }
html:not([data-lang="zht"]) .l-zht { display: none !important; }
html[data-lang="zh"] .l-en, html[data-lang="zht"] .l-en { display: none !important; }

html { scroll-behavior: smooth; }
body {
  font-family: 'Work Sans', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'PingFang TC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: var(--body);
  background: linear-gradient(180deg, var(--page-from), var(--page-to));
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  display: flex; flex-direction: column;
}
main { flex: 1; }
h1, h2, h3, .brand-name {
  font-family: 'Newsreader', Georgia, 'Songti SC', 'Songti TC', serif;
  color: var(--heading);
  font-weight: 600;
}
a { color: var(--accent-text); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: var(--bar);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--divider);
}
.header-inner {
  max-width: 1020px; margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; gap: 10px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand img { width: 32px; height: 32px; display: block; }
.brand-name { font-size: 20px; line-height: 1; }
.site-nav { margin-left: auto; display: flex; gap: 2px; align-items: center; }
.site-nav a {
  padding: 8px 12px; border-radius: 10px; text-decoration: none;
  color: var(--muted); font-size: 14px; font-weight: 500; white-space: nowrap;
}
.site-nav a:hover { background: var(--soft-fill); color: var(--accent-text); }
.site-nav a.active { background: var(--soft-fill); color: var(--accent-text); }
.lang-menu { position: relative; margin-left: 8px; }
.lang-btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 13px; border-radius: 20px; cursor: pointer;
  border: 1px solid var(--border-strong); background: transparent;
  color: var(--muted); font-size: 13px; font-family: inherit; line-height: 1.3;
  white-space: nowrap;
}
.lang-btn svg { transition: transform .15s ease; flex: none; }
.lang-btn:hover { color: var(--accent-text); border-color: var(--accent); }
.lang-menu.open .lang-btn { color: var(--accent-text); border-color: var(--accent); }
.lang-menu.open .lang-btn svg { transform: rotate(180deg); }
.lang-pop {
  position: absolute; right: 0; top: calc(100% + 8px); z-index: 30;
  min-width: 138px; padding: 6px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; box-shadow: var(--shadow-hero);
}
.lang-pop button {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  width: 100%; padding: 9px 12px; border: 0; border-radius: 8px;
  background: transparent; text-align: left; cursor: pointer;
  color: var(--body); font-size: 14px; font-family: inherit; line-height: 1.3;
}
.lang-pop button::after { content: "✓"; font-weight: 700; opacity: 0; }
.lang-pop button:hover { background: var(--soft-fill); color: var(--accent-text); }
.lang-pop button.active { color: var(--accent-text); font-weight: 600; }
.lang-pop button.active::after { opacity: 1; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 64px 20px 52px; text-align: center; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, var(--grid-line) 0 1px, transparent 1px 22px),
    repeating-linear-gradient(90deg, var(--grid-line) 0 1px, transparent 1px 22px);
  -webkit-mask-image: radial-gradient(ellipse 72% 68% at 50% 38%, #000 25%, transparent 74%);
  mask-image: radial-gradient(ellipse 72% 68% at 50% 38%, #000 25%, transparent 74%);
}
.hero > * { position: relative; }
.hero-frame {
  display: inline-block; padding: 20px; margin-bottom: 26px;
  background: var(--frame-bg); border: 1px solid var(--border);
  border-radius: 22px; box-shadow: var(--shadow-hero);
}
.hero-frame img { width: 128px; height: 128px; display: block; }
.hero h1 { font-size: clamp(34px, 6vw, 54px); line-height: 1.12; letter-spacing: -.01em; }
.hero .sub {
  margin: 16px auto 30px; max-width: 620px;
  font-size: 17.5px; line-height: 1.6; color: var(--muted);
}
.store-badge {
  display: inline-flex; align-items: center; gap: 11px; text-align: left;
  background: var(--badge-bg); color: var(--badge-fg);
  padding: 10px 22px 12px; border-radius: 14px; text-decoration: none;
  box-shadow: var(--shadow-accent);
}
.store-badge:hover { transform: translateY(-1px); }
.store-badge svg { width: 21px; height: 26px; fill: currentColor; flex: none; }
.store-badge .small { display: block; font-size: 11px; opacity: .8; line-height: 1.2; }
.store-badge .big { display: block; font-size: 18px; font-weight: 600; line-height: 1.25; }
.hero-note { margin-top: 16px; font-size: 13px; color: var(--eyebrow); }

/* ---------- Feature cards ---------- */
.features {
  max-width: 1020px; margin: 0 auto; padding: 20px 20px 8px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px;
}
.card { border-radius: 15px; padding: 22px 22px 24px; }
.card h3 { font-size: 20px; margin-bottom: 7px; }
.card p { font-size: 14.5px; line-height: 1.6; }
.card.blue   { background: var(--candy-blue);   } .card.blue h3   { color: var(--on-candy-blue); }
.card.pink   { background: var(--candy-pink);   } .card.pink h3   { color: var(--on-candy-pink); }
.card.peach  { background: var(--candy-peach);  } .card.peach h3  { color: var(--on-peach); }
.card.butter { background: var(--candy-butter); } .card.butter h3 { color: var(--on-candy-butter); }

/* ---------- Pricing strip ---------- */
.pricing {
  max-width: 1020px; margin: 24px auto 0; padding: 0 20px;
}
.pricing-inner {
  background: var(--panel); border: 1px solid var(--border); border-radius: 15px;
  padding: 34px 28px; text-align: center;
}
.pricing h2 { font-size: clamp(24px, 4vw, 32px); margin-bottom: 10px; }
.pricing p { max-width: 640px; margin: 0 auto; font-size: 15.5px; line-height: 1.65; }

/* ---------- Inner pages (support / privacy) ---------- */
.page { max-width: 760px; margin: 0 auto; padding: 48px 20px 24px; }
.page h1 { font-size: clamp(30px, 5vw, 40px); margin-bottom: 10px; }
.page .lead { font-size: 16.5px; line-height: 1.6; color: var(--muted); margin-bottom: 28px; }
.eyebrow {
  font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--eyebrow); font-weight: 600; margin-bottom: 10px;
}
.contact-card {
  background: var(--card); border: 1px solid var(--border); border-radius: 15px;
  padding: 26px; margin-bottom: 36px; box-shadow: var(--shadow-accent);
}
.contact-card p { font-size: 15px; line-height: 1.65; }
.contact-card .email-row { margin: 14px 0 12px; display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.btn {
  display: inline-block; background: var(--accent); color: var(--on-accent);
  font-weight: 600; font-size: 15px; padding: 11px 20px; border-radius: 10px;
  text-decoration: none; box-shadow: var(--shadow-accent);
}
.btn:hover { filter: brightness(1.05); }
.email-addr { font-size: 15px; color: var(--accent-text); word-break: break-all; }
.hint { font-size: 13.5px; color: var(--muted); }

.page h2 { font-size: 23px; margin: 34px 0 10px; }
.page p, .page li { font-size: 15px; line-height: 1.7; }
.page ul { padding-left: 22px; margin: 8px 0; }
.page section p + p { margin-top: 8px; }

.faq details { border-bottom: 1px solid var(--divider); padding: 4px 0; }
.faq summary {
  cursor: pointer; padding: 13px 0; font-weight: 600; font-size: 16px;
  color: var(--heading); list-style-position: outside;
}
.faq summary::marker { color: var(--accent); }
.faq details p, .faq details ul { padding: 2px 0 16px; }

.tldr {
  background: var(--soft-fill); border: 1px solid var(--soft-border);
  border-radius: 12px; padding: 18px 20px; margin: 18px 0 8px;
}
.tldr p { font-size: 15px; line-height: 1.65; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--divider); margin-top: 56px;
  padding: 26px 20px 38px; text-align: center;
  font-size: 13px; color: var(--eyebrow); line-height: 2;
}
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--accent-text); text-decoration: underline; }

@media (max-width: 560px) {
  .site-nav a { padding: 8px 7px; font-size: 13px; }
  .lang-btn { padding: 6px 10px; font-size: 12.5px; }
  .hero { padding-top: 44px; }
  .hero-frame img { width: 104px; height: 104px; }
}