/* ============================================================
   轻伴·团子 NOOKI · standalone promotional site
   No framework, no backend, no external assets.
   ============================================================ */

:root {
  --ink: #30352e;
  --ink-soft: #4c5148;
  --muted: #7b7e73;
  --muted-2: #a3a397;
  --paper: #fbf7ee;
  --paper-2: #f4ecdc;
  --paper-3: #ede2cf;
  --white: #fffdf8;
  --sage: #7d9881;
  --sage-deep: #4f6b56;
  --sage-soft: #e3eadf;
  --terra: #d97e62;
  --terra-soft: #f6e1d8;
  --butter: #f1e2b2;
  --line: rgba(52, 58, 48, 0.12);
  --line-strong: rgba(52, 58, 48, 0.2);
  --shadow-sm: 0 12px 32px rgba(76, 64, 43, 0.08);
  --shadow-md: 0 28px 70px rgba(76, 64, 43, 0.14);
  --shadow-lg: 0 50px 130px rgba(61, 51, 34, 0.18);
  --serif: "Iowan Old Style", "Palatino Linotype", "Songti SC", "SimSun", Georgia, serif;
  --sans: "Aptos", "SF Pro Text", "Segoe UI Variable", "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  --round: "Aptos", "SF Pro Rounded", "Segoe UI Variable", "PingFang SC", "Microsoft YaHei UI", sans-serif;
  --ease: cubic-bezier(0.22, 0.7, 0.22, 1);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(900px 600px at 90% -10%, rgba(125, 152, 129, 0.18), transparent 62%),
    radial-gradient(700px 500px at -10% 20%, rgba(244, 226, 177, 0.38), transparent 58%),
    linear-gradient(180deg, #fbf7ee 0%, #f7f0e3 54%, #fbf7ee 100%);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
p, h1, h2, h3 { margin: 0; }
button, a { -webkit-tap-highlight-color: transparent; }
::selection { background: rgba(125, 152, 129, 0.26); }

.site-grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.42;
  background-image:
    radial-gradient(rgba(75, 65, 48, 0.08) 0.6px, transparent 0.6px),
    radial-gradient(rgba(255, 255, 255, 0.5) 0.6px, transparent 0.6px);
  background-size: 5px 5px, 7px 7px;
  background-position: 0 0, 2px 3px;
  mix-blend-mode: multiply;
}

/* ---------------------------------------------
   header
--------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 22px 0 18px;
  display: flex;
  align-items: center;
  gap: 28px;
  background: linear-gradient(180deg, rgba(251, 247, 238, .94), rgba(251, 247, 238, .8));
  border-bottom: 1px solid rgba(52, 58, 48, .06);
  box-shadow: 0 10px 28px rgba(76, 64, 43, .04);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.site-brand { display: flex; align-items: center; gap: 11px; flex: 0 0 auto; }
.site-brand > span:last-child { display: flex; flex-direction: column; line-height: 1.05; }
.site-brand strong { font-family: var(--round); font-size: 20px; letter-spacing: -0.03em; color: var(--ink); }
.site-brand strong span { color: var(--terra); padding: 0 2px; }
.site-brand small { margin-top: 4px; color: var(--muted-2); font-size: 8px; letter-spacing: 0.3em; font-weight: 700; }

.site-pet {
  position: relative;
  width: 44px;
  height: 40px;
  display: inline-block;
  flex: 0 0 auto;
  border-radius: 46% 46% 44% 44% / 48% 48% 52% 52%;
  background: linear-gradient(145deg, #f4e7c7, #e4d1aa);
  box-shadow: inset 0 -4px 8px rgba(157, 127, 76, 0.14), 0 8px 16px rgba(111, 86, 47, 0.12);
}
.site-ear {
  position: absolute;
  top: -7px;
  width: 15px;
  height: 15px;
  border-radius: 7px 9px 3px 8px;
  background: #edddba;
  border: 1px solid rgba(156, 129, 78, 0.18);
}
.site-ear.l { left: 4px; transform: rotate(-19deg); }
.site-ear.r { right: 4px; transform: rotate(19deg) scaleX(-1); }
.site-sprout {
  position: absolute;
  left: 50%;
  top: -12px;
  width: 16px;
  height: 11px;
  transform: translateX(-50%) rotate(-5deg);
  border-radius: 80% 0 80% 0;
  background: linear-gradient(135deg, #9ab08d, #6f8b70);
  box-shadow: 7px 2px 0 -1px #b8c9aa;
}
.site-sprout::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 7px;
  width: 1.5px;
  height: 6px;
  background: #74886d;
  transform: rotate(-18deg);
}
.site-face { position: absolute; inset: 0; }
.site-face i {
  position: absolute;
  top: 17px;
  width: 3px;
  height: 4px;
  border-radius: 50%;
  background: #4b453b;
}
.site-face i:first-child { left: 13px; }
.site-face i:nth-child(2) { right: 13px; }
.site-face b {
  position: absolute;
  left: 50%;
  top: 24px;
  width: 5px;
  height: 3px;
  transform: translateX(-50%);
  border-bottom: 1.5px solid #8b6e55;
  border-radius: 0 0 6px 6px;
}

.site-nav { display: flex; align-items: center; gap: 22px; margin-left: auto; }
.site-nav a {
  position: relative;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  transition: color 0.2s var(--ease);
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -5px;
  height: 1px;
  background: var(--sage-deep);
  transition: right 0.25s var(--ease);
}
.site-nav a:hover { color: var(--ink); }
.site-nav a:hover::after { right: 0; }
.nav-cta {
  flex: 0 0 auto;
  padding: 9px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.62);
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 700;
  transition: 0.22s var(--ease);
}
.nav-cta:hover { background: var(--ink); border-color: var(--ink); color: var(--white); transform: translateY(-1px); }

/* ---------------------------------------------
   hero
--------------------------------------------- */
.hero {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  min-height: 650px;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(420px, 0.98fr);
  align-items: center;
  gap: 54px;
  padding: 56px 0 78px;
}
.eyebrow {
  display: inline-block;
  color: var(--sage-deep);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.hero h1 {
  margin-top: 16px;
  font-family: var(--serif);
  font-size: clamp(44px, 5.2vw, 74px);
  line-height: 1.1;
  letter-spacing: -0.055em;
  font-weight: 500;
  color: #2d332c;
}
.hero-lead {
  max-width: 520px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.95;
}
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 19px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 12px;
  font-weight: 700;
  transition: 0.24s var(--ease);
}
.btn span { font-size: 15px; line-height: 1; transform: translateY(-1px); }
.btn-primary {
  background: var(--ink);
  color: var(--white);
  box-shadow: 0 16px 36px rgba(48, 53, 46, 0.2);
}
.btn-primary:hover { transform: translateY(-2px); background: #1f241f; box-shadow: 0 22px 46px rgba(48, 53, 46, 0.25); }
.btn-quiet { background: rgba(255, 253, 248, 0.56); border-color: var(--line); color: var(--ink-soft); }
.btn-quiet:hover { background: var(--white); border-color: var(--line-strong); transform: translateY(-1px); }
.hero-notes { display: flex; flex-wrap: wrap; gap: 17px; margin-top: 26px; color: var(--muted-2); font-size: 10px; }
.hero-notes span { display: inline-flex; align-items: center; gap: 6px; }
.dot { width: 6px; height: 6px; border-radius: 50%; display: inline-block; }
.dot.sage { background: var(--sage); }
.dot.terra { background: var(--terra); }
.dot.butter { background: #c7a84f; }

.hero-stage {
  position: relative;
  min-height: 540px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.stage-orbit {
  position: absolute;
  border: 1px dashed rgba(93, 112, 82, 0.18);
  border-radius: 50%;
  pointer-events: none;
}
.orbit-one { width: 430px; height: 430px; transform: rotate(-8deg); }
.orbit-two { width: 530px; height: 350px; transform: rotate(13deg); border-color: rgba(217, 126, 98, 0.13); }

.app-window {
  position: relative;
  z-index: 2;
  width: min(374px, 100%);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 27px;
  background: rgba(255, 253, 248, 0.92);
  box-shadow: 0 44px 100px rgba(71, 60, 42, 0.22), 0 8px 24px rgba(71, 60, 42, 0.08);
  animation: floatWindow 7s ease-in-out infinite;
}
.window-head { display: flex; align-items: center; gap: 9px; padding: 16px 17px 10px; }
.window-pet {
  position: relative;
  width: 32px;
  height: 30px;
  border-radius: 45%;
  background: linear-gradient(145deg, #f3e5c3, #dfcaa1);
  box-shadow: inset 0 -3px 6px rgba(147, 119, 69, 0.13);
}
.window-pet::before, .window-pet::after {
  content: "";
  position: absolute;
  top: -4px;
  width: 10px;
  height: 10px;
  border-radius: 6px 7px 2px 5px;
  background: #ead9b5;
}
.window-pet::before { left: 3px; transform: rotate(-17deg); }
.window-pet::after { right: 3px; transform: rotate(17deg) scaleX(-1); }
.window-pet i { position: absolute; top: 12px; width: 2px; height: 3px; border-radius: 50%; background: #4b453b; }
.window-pet i:first-child { left: 10px; }
.window-pet i:nth-child(2) { right: 10px; }
.window-head > div { display: flex; flex-direction: column; line-height: 1.1; }
.window-head strong { font-size: 11px; letter-spacing: -0.02em; }
.window-head small { margin-top: 3px; color: var(--muted-2); font-size: 6px; letter-spacing: 0.18em; font-weight: 700; }
.window-dots { margin-left: auto; display: flex; gap: 4px; }
.window-dots i { width: 5px; height: 5px; border-radius: 50%; background: rgba(52, 58, 48, 0.13); }
.window-info { display: flex; align-items: center; gap: 7px; padding: 0 17px 10px; color: var(--muted-2); font-size: 6.5px; }
.window-info span { margin-left: auto; }
.window-info b { color: var(--ink-soft); font-weight: 700; }
.window-tabs { display: flex; gap: 13px; padding: 0 17px; border-bottom: 1px solid var(--line); }
.window-tabs span { position: relative; padding-bottom: 7px; color: var(--muted-2); font-size: 7px; font-weight: 600; }
.window-tabs span.active { color: var(--ink); }
.window-tabs span.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; border-radius: 2px; background: var(--sage-deep); }
.window-body { padding: 11px 13px 16px; background: linear-gradient(180deg, #fffdf8, #fbf7ee); }
.window-greeting { display: flex; flex-direction: column; gap: 2px; padding: 2px 2px 9px; }
.window-greeting span { font-family: var(--serif); font-size: 14px; letter-spacing: -0.03em; }
.window-greeting small { color: var(--muted); font-size: 7px; }
.window-focus {
  position: relative;
  overflow: hidden;
  padding: 12px 13px 13px;
  border-radius: 15px;
  background: linear-gradient(140deg, #425846, #334739);
  color: #f4f0e6;
  box-shadow: 0 12px 30px rgba(45, 61, 47, 0.18);
}
.window-focus > span { color: rgba(244, 240, 230, 0.7); font-size: 6.5px; letter-spacing: 0.12em; }
.window-focus strong { display: block; margin-top: 6px; font-size: 29px; font-weight: 500; letter-spacing: -0.04em; line-height: 1; }
.focus-pill { position: absolute; right: 11px; top: 25px; padding: 4px 9px; border-radius: 999px; background: #f4efe2; color: #38493b; font-size: 6.5px; font-weight: 700; }
.focus-track { margin-top: 12px; height: 3px; border-radius: 4px; background: rgba(255, 255, 255, 0.16); overflow: hidden; }
.focus-track i { display: block; width: 36%; height: 100%; border-radius: 4px; background: #a9c3a8; }
.window-care { display: grid; grid-template-columns: repeat(3, 1fr); gap: 5px; margin-top: 7px; }
.window-care span { padding: 7px 6px; border-radius: 9px; background: #f4ecdd; color: var(--ink-soft); font-size: 6.5px; text-align: center; }
.window-care b { display: block; margin-top: 2px; color: var(--muted); font-size: 5.5px; font-weight: 500; }
.window-todo { display: flex; align-items: center; gap: 7px; margin-top: 7px; padding: 8px 9px; border: 1px solid var(--line); border-radius: 10px; background: rgba(255, 253, 248, 0.82); }
.window-todo i { width: 11px; height: 11px; border: 1px solid rgba(78, 92, 75, 0.3); border-radius: 50%; flex: 0 0 auto; }
.window-todo span { flex: 1; color: var(--ink-soft); font-size: 7px; }
.window-todo small { padding: 2px 5px; border-radius: 999px; background: var(--sage-soft); color: var(--sage-deep); font-size: 5.5px; }

.float-card {
  position: absolute;
  z-index: 3;
  width: 176px;
  padding: 11px 13px;
  border: 1px solid rgba(255, 255, 255, 0.84);
  border-radius: 15px;
  background: rgba(255, 253, 248, 0.94);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(8px);
}
.float-top { top: 34px; right: 2px; transform: rotate(3deg); animation: floatCard 6s ease-in-out infinite; }
.float-bottom { bottom: 28px; left: 2px; transform: rotate(-2.5deg); animation: floatCard 7s 0.6s ease-in-out infinite; }
.mini-label { display: block; color: var(--sage-deep); font-size: 6px; font-weight: 800; letter-spacing: 0.13em; }
.float-card strong { display: block; margin-top: 5px; color: var(--ink); font-size: 9.5px; line-height: 1.45; }
.float-card small { display: block; margin-top: 4px; color: var(--muted-2); font-size: 7px; }

/* ---------------------------------------------
   promise strip
--------------------------------------------- */
.promise-strip {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.promise-strip div { padding: 21px 20px; border-right: 1px solid var(--line); }
.promise-strip div:last-child { border-right: 0; }
.promise-strip strong { display: block; font-family: var(--serif); font-size: 19px; font-weight: 500; letter-spacing: -0.03em; }
.promise-strip span { display: block; margin-top: 4px; color: var(--muted); font-size: 10px; }

/* ---------------------------------------------
   sections
--------------------------------------------- */
.section {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 92px 0;
}
.section-head { max-width: 760px; }
.section-head h2 {
  margin-top: 12px;
  font-family: var(--serif);
  font-size: clamp(31px, 3.4vw, 52px);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.045em;
}
.section-head > p { max-width: 620px; margin-top: 16px; color: var(--muted); font-size: 13px; line-height: 1.9; }

.about-grid { display: grid; grid-template-columns: 1.35fr 1fr 1fr; gap: 16px; margin-top: 38px; }
.about-card {
  position: relative;
  min-height: 230px;
  padding: 25px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 22px;
  background: rgba(255, 253, 248, 0.64);
  box-shadow: var(--shadow-sm);
}
.about-card.large { background: linear-gradient(150deg, rgba(226, 234, 223, 0.8), rgba(255, 253, 248, 0.6)); }
.card-number { color: var(--muted-2); font-size: 8px; font-weight: 800; letter-spacing: 0.16em; }
.about-card h3 { margin-top: 31px; font-family: var(--serif); font-size: 22px; font-weight: 500; letter-spacing: -0.035em; line-height: 1.35; }
.about-card p { margin-top: 12px; color: var(--muted); font-size: 11.5px; line-height: 1.85; }

.features { padding-top: 68px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; margin-top: 38px; }
.feature-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 19px;
  background: rgba(255, 253, 248, 0.54);
  transition: 0.26s var(--ease);
}
.feature-card:hover { transform: translateY(-4px); background: rgba(255, 253, 248, 0.9); border-color: rgba(125, 152, 129, 0.36); box-shadow: var(--shadow-md); }
.feature-icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: var(--sage-soft);
  color: var(--sage-deep);
  font-size: 15px;
}
.feature-card:nth-child(2) .feature-icon { background: var(--terra-soft); color: #a45e48; }
.feature-card:nth-child(3) .feature-icon { background: #f4ecd6; color: #8e7634; }
.feature-card:nth-child(5) .feature-icon { background: #e9e4f0; color: #756a88; }
.feature-card h3 { margin-top: 18px; font-family: var(--serif); font-size: 22px; font-weight: 500; letter-spacing: -0.04em; }
.feature-card p { margin-top: 8px; color: var(--muted); font-size: 11px; line-height: 1.85; }

.day { padding-top: 70px; }
.timeline {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: 38px;
  border-top: 1px solid var(--line);
}
.timeline-item {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 22px;
  padding: 24px 4px;
  border-bottom: 1px solid var(--line);
}
.timeline-item time { color: var(--sage-deep); font-family: var(--serif); font-size: 18px; letter-spacing: -0.02em; }
.timeline-item strong { display: block; font-size: 13px; }
.timeline-item p { margin-top: 4px; color: var(--muted); font-size: 11.5px; }

.privacy { padding-top: 40px; }
.privacy-card {
  padding: 42px;
  border: 1px solid rgba(255, 255, 255, 0.62);
  border-radius: 27px;
  background: linear-gradient(140deg, rgba(64, 82, 67, 0.95), rgba(44, 58, 48, 0.98));
  color: #f1ede1;
  box-shadow: var(--shadow-lg);
}
.privacy-card .eyebrow { color: #b8cbb5; }
.privacy-card h2 { margin-top: 13px; font-family: var(--serif); font-size: clamp(30px, 3vw, 44px); font-weight: 500; letter-spacing: -0.045em; }
.privacy-card > p { max-width: 760px; margin-top: 16px; color: rgba(241, 237, 225, 0.7); font-size: 12px; line-height: 1.9; }
.privacy-list { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 25px; }
.privacy-list span { padding: 7px 11px; border: 1px solid rgba(255, 255, 255, 0.15); border-radius: 999px; color: rgba(241, 237, 225, 0.86); font-size: 9.5px; }
.privacy-fine { max-width: 780px; margin-top: 22px !important; color: rgba(241, 237, 225, 0.48) !important; font-size: 10px !important; }

.download { padding-top: 60px; }
.download-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(270px, 0.7fr);
  align-items: center;
  gap: 30px;
  overflow: hidden;
  padding: 46px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 29px;
  background:
    radial-gradient(500px 300px at 90% 20%, rgba(125, 152, 129, 0.18), transparent 70%),
    linear-gradient(140deg, #fffdf8, #f5eddd);
  box-shadow: var(--shadow-md);
}
.download-card h2 { margin-top: 12px; font-family: var(--serif); font-size: clamp(34px, 3.6vw, 50px); font-weight: 500; letter-spacing: -0.05em; line-height: 1.1; }
.download-card p { max-width: 560px; margin-top: 14px; color: var(--muted); font-size: 12px; line-height: 1.85; }
.download-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 23px; }
.download-note { margin-top: 17px !important; color: var(--muted-2) !important; font-size: 9.5px !important; line-height: 1.7 !important; }
.install-grid { margin-top: 22px; }
.install-grid .feature-icon { font-size: 13px; }
#ai .ai-note { margin-top: 24px; }
#ai .privacy-card h2 { font-size: clamp(26px, 3vw, 38px); }
code { padding: 1px 5px; border-radius: 5px; background: rgba(52, 58, 48, 0.07); font-family: "Cascadia Code", Consolas, monospace; font-size: 0.92em; }
.download-pet { position: relative; min-height: 230px; }
.big-ear { position: absolute; top: 36px; width: 56px; height: 60px; border-radius: 30px 38px 12px 26px; background: #e9d6ae; border: 1px solid rgba(147, 117, 63, 0.14); }
.big-ear.l { left: 46px; transform: rotate(-18deg); }
.big-ear.r { right: 46px; transform: rotate(18deg) scaleX(-1); }
.big-sprout { position: absolute; left: 50%; top: 18px; width: 54px; height: 36px; transform: translateX(-50%) rotate(-4deg); border-radius: 80% 0 80% 0; background: linear-gradient(135deg, #9ab08d, #668366); box-shadow: 24px 8px 0 -2px #b5c7a7; }
.big-sprout::after { content: ""; position: absolute; left: 25px; top: 23px; width: 4px; height: 18px; background: #70856b; transform: rotate(-16deg); border-radius: 4px; }
.big-face {
  position: absolute;
  left: 50%;
  top: 50px;
  width: 176px;
  height: 164px;
  transform: translateX(-50%);
  border-radius: 46% 46% 44% 44% / 48% 48% 52% 52%;
  background: linear-gradient(145deg, #f5e7c4, #e2cda5);
  box-shadow: inset 0 -9px 20px rgba(157, 127, 76, 0.14), 0 26px 48px rgba(111, 86, 47, 0.15);
}
.big-face i { position: absolute; top: 70px; width: 9px; height: 12px; border-radius: 50%; background: #4b453b; }
.big-face i:first-child { left: 56px; }
.big-face i:nth-child(2) { right: 56px; }
.big-face b { position: absolute; left: 50%; top: 96px; width: 15px; height: 8px; transform: translateX(-50%); border-bottom: 2px solid #8b6e55; border-radius: 0 0 10px 10px; }
.big-shadow { position: absolute; left: 50%; bottom: 12px; width: 190px; height: 22px; transform: translateX(-50%); border-radius: 50%; background: rgba(95, 76, 45, 0.13); filter: blur(8px); }

.faq { padding-top: 54px; padding-bottom: 100px; }
.faq-list { margin-top: 32px; border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary {
  position: relative;
  padding: 19px 38px 19px 3px;
  cursor: pointer;
  list-style: none;
  font-size: 13px;
  font-weight: 650;
  color: var(--ink-soft);
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 8px;
  top: 17px;
  color: var(--muted-2);
  font-size: 19px;
  font-weight: 300;
  transition: transform 0.2s var(--ease);
}
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details p { padding: 0 38px 19px 3px; color: var(--muted); font-size: 11.5px; line-height: 1.9; }

/* ---------------------------------------------
   footer
--------------------------------------------- */
.site-footer {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 30px 0 38px;
  display: flex;
  align-items: center;
  gap: 22px;
  border-top: 1px solid var(--line);
}
.footer-brand { display: flex; align-items: center; gap: 9px; }
.site-pet.small { width: 31px; height: 28px; transform: scale(0.9); }
.site-pet.small .site-ear { width: 11px; height: 11px; top: -5px; }
.site-pet.small .site-face i { top: 12px; width: 2px; height: 3px; }
.site-pet.small .site-face i:first-child { left: 9px; }
.site-pet.small .site-face i:nth-child(2) { right: 9px; }
.site-pet.small .site-face b { top: 17px; width: 4px; height: 2px; }
.footer-brand div { display: flex; flex-direction: column; }
.footer-brand strong { font-size: 11px; }
.footer-brand small { color: var(--muted-2); font-size: 8px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 15px; margin-left: auto; }
.footer-links a { color: var(--muted); font-size: 9.5px; }
.footer-links a:hover { color: var(--ink); }
.footer-copy { width: 100%; margin-top: 8px; color: var(--muted-2); font-size: 8.5px; }

/* ---------------------------------------------
   motion
--------------------------------------------- */
@keyframes floatWindow {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-8px) rotate(0.4deg); }
}
@keyframes floatCard {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 -8px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
}

/* ---------------------------------------------
   responsive
--------------------------------------------- */
@media (max-width: 980px) {
  .site-header, .hero, .promise-strip, .section, .site-footer { width: min(100% - 32px, 760px); }
  .nav-cta { margin-left: auto; }
  .hero { grid-template-columns: 1fr; gap: 28px; min-height: auto; padding: 34px 0 56px; }
  .hero-stage { min-height: 470px; }
  .hero h1 { font-size: clamp(42px, 8vw, 62px); }
  .about-grid { grid-template-columns: 1fr 1fr; }
  .about-card.large { grid-column: 1 / -1; min-height: 190px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .download-card { grid-template-columns: 1fr; }
  .download-pet { min-height: 220px; order: -1; }
}

@media (max-width: 820px) {
  .site-nav { display: none; }
  .nav-cta { margin-left: auto; }
}

@media (max-width: 680px) {
  .site-header, .hero, .promise-strip, .section, .site-footer { width: calc(100% - 26px); }
  .site-header { padding: 16px 0 12px; }
  .site-brand strong { font-size: 17px; }
  .nav-cta { padding: 7px 11px; font-size: 9.5px; }
  .hero { padding-top: 24px; }
  .hero h1 { font-size: clamp(36px, 11vw, 48px); }
  .hero-lead { font-size: 12.5px; }
  .hero-notes { gap: 11px; }
  .hero-stage { min-height: 410px; }
  .app-window { width: min(330px, 100%); }
  .float-card { width: 145px; padding: 9px 10px; }
  .float-top { top: 10px; right: -2px; }
  .float-bottom { bottom: 0; left: -2px; }
  .float-card strong { font-size: 8px; }
  .orbit-one { width: 330px; height: 330px; }
  .orbit-two { width: 390px; height: 270px; }
  .promise-strip { grid-template-columns: 1fr 1fr; }
  .promise-strip div { border-right: 0; border-bottom: 1px solid var(--line); padding: 15px 12px; }
  .promise-strip div:nth-child(odd) { border-right: 1px solid var(--line); }
  .promise-strip div:nth-last-child(-n+2) { border-bottom: 0; }
  .promise-strip strong { font-size: 16px; }
  .promise-strip span { font-size: 8.5px; }
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 30px; }
  .about-grid { grid-template-columns: 1fr; }
  .about-card.large { grid-column: auto; min-height: 0; }
  .about-card { min-height: 0; padding: 21px; }
  .about-card h3 { margin-top: 24px; font-size: 20px; }
  .feature-grid { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 65px minmax(0, 1fr); gap: 12px; padding: 18px 0; }
  .timeline-item time { font-size: 15px; }
  .privacy-card { padding: 26px 22px; border-radius: 22px; }
  .privacy-card h2 { font-size: 28px; }
  .download-card { padding: 25px 21px; border-radius: 22px; }
  .download-card h2 { font-size: 33px; }
  .download-actions .btn { width: 100%; }
  .faq { padding-bottom: 64px; }
  .site-footer { flex-wrap: wrap; gap: 12px; }
  .footer-links { width: 100%; margin-left: 0; }
  .footer-copy { margin-top: 2px; }
}