/* Layout：置中首屏＋下方「打字 vs SpokenKeys」速度對比，下面是單欄內容區；全站內容寬 1120px。 */
:root {
  --paper: #F3F4F7;
  --surface: #FFFFFF;
  --ink: #131A2B;
  --muted: #5B6478;
  --line: #DADEE7;
  --night: #172244;
  --night-ink: #EDF0FA;
  --night-muted: #A9B3D1;
  --signal: #F2542D;
  --tint: #E1E6FF;
  --bezel: #131A2B;
  --island: #05070C;

  --font-display: "Newsreader", Georgia, "Times New Roman", serif;
  --font-body: "Figtree", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --wrap: 1120px;
  color-scheme: light; /* 全站只用淺色(使用者決定),不跟系統深色模式 */
  --radius: 18px;
}

html { scroll-behavior: smooth; }
body {
  margin: 0;
  padding-inline: 16px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 6px; }
section[id] { scroll-margin-top: 96px; }
.wrap { max-width: var(--wrap); margin-inline: auto; }

h1, h2, h3 { font-family: var(--font-display); font-weight: 600; text-wrap: balance; margin: 0; }
h2 { font-size: clamp(34px, 4.8vw, 56px); line-height: 1.08; letter-spacing: -0.02em; }
h3 { font-size: 21px; line-height: 1.35; }
p { margin: 0; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 12.5px/1 var(--font-mono);
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted);
}
.rec {
  width: 8px; height: 8px; border-radius: 50%; flex: none;
  background: var(--signal);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--signal) 22%, transparent);
}

kbd, .key {
  display: inline-grid; place-items: center;
  min-width: 2.4em; padding: 5px 8px;
  font: 500 13px/1 var(--font-mono);
  color: var(--ink); background: var(--surface);
  border: 1px solid var(--line); border-radius: 7px;
  box-shadow: 0 2px 0 var(--line);
}

/* 按鈕 */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 22px; border-radius: 999px;
  font: 600 15px/1 var(--font-body);
  text-decoration: none; cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--muted); }
.btn-sm { padding: 10px 16px; font-size: 14px; }

/* 導覽列 */
.nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; padding-block: 12px; }
.nav-inner {
  max-width: var(--wrap); margin-inline: auto;
  display: flex; align-items: center; gap: 16px;
  padding: 7px 7px 7px 18px;
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border: 1px solid var(--line); border-radius: 999px;
}
.brand {
  display: inline-flex; align-items: center; gap: 4px;
  font: 600 24px/1 var(--font-display); letter-spacing: -0.01em;
  color: var(--ink); text-decoration: none;
}
/* Logo 的橘色游標從 k 的頂端拉到 p 的底部,所以圖示是字級的 1.3 倍(見 brand/README.md) */
.brand svg { width: 31px; height: 31px; flex: none; }
.nav-links { display: flex; gap: 2px; margin-left: auto; }
.nav-links a {
  padding: 9px 14px; border-radius: 999px;
  font-size: 15px; color: var(--muted); text-decoration: none;
}
.nav-links a:hover { color: var(--ink); background: var(--paper); }
@media (max-width: 720px) {
  .nav-links { display: none; }
}

/* 首屏:置中標題,下面接速度對比 */
.hero {
  max-width: var(--wrap); margin-inline: auto;
  display: grid; justify-items: center; text-align: center;
  padding-block: 72px 48px;
}
.hero-copy { min-width: 0; display: grid; justify-items: center; }
.hero h1 {
  max-width: 13em; margin-block: 8px 18px;
  font-size: clamp(44px, 6.8vw, 84px); line-height: 1.02; letter-spacing: -0.03em;
}
.hero h1 .gt { display: inline-block; margin-inline: 0.04em; color: var(--signal); font-family: var(--font-body); font-weight: 500; transform: translateY(-0.04em); }
.tagline {
  margin-bottom: 22px;
  font: 500 clamp(26px, 3vw, 38px)/1.2 var(--font-display); letter-spacing: -0.015em;
  color: var(--ink);
}
.caret {
  display: inline-block; width: 0.07em; height: 0.92em; margin-left: 0.05em;
  vertical-align: -0.1em; background: var(--signal);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.lede { font-size: clamp(18px, 1.9vw, 21px); color: var(--muted); max-width: 30em; margin-bottom: 30px; }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.hero .cta-row { justify-content: center; }
.platforms { margin-top: 18px; font-size: 14px; color: var(--muted); }
@media (max-width: 900px) { .hero { padding-block: 40px 32px; } }

/* 首屏賽跑:同一句話,上面用打的、下面用說的,各自計時;說的那條先完成會亮 ✓ */
.duel-section { max-width: 940px; margin-inline: auto; padding-bottom: 72px; display: grid; gap: 14px; text-align: center; }
.duel {
  display: grid; gap: 12px; padding: 14px; border-radius: 28px;
  background: var(--surface); border: 1px solid var(--line);
  box-shadow: 0 30px 60px -36px color-mix(in srgb, var(--ink) 40%, transparent);
}
.lane {
  display: grid; grid-template-columns: 160px minmax(0, 1fr) auto; align-items: center; gap: 14px 20px;
  padding: 20px 22px 18px; border-radius: 20px; text-align: left;
}
.lane-type { background: var(--paper); color: var(--ink); }
.lane-talk { background: var(--ink); color: var(--paper); }
.lane-who { display: grid; gap: 6px; }
.lane-who b { display: flex; align-items: center; gap: 8px; font-size: 16px; }
.lane-who svg { width: 20px; height: 20px; color: var(--muted); }
.lane-who .wave { height: 16px; gap: 2px; color: var(--signal); }
.lane-who .wave i { width: 3px; }
.lane-who > span { font: 500 12px/1 var(--font-mono); letter-spacing: 0.06em; color: var(--muted); }
.lane-talk .lane-who > span { color: color-mix(in srgb, var(--paper) 60%, transparent); }
.lane-field { min-height: 3em; font-size: clamp(17px, 1.9vw, 21px); line-height: 1.45; }
.lane-field .caret { width: 2px; height: 1.1em; vertical-align: -0.2em; }
.lane-talk.done .lane-field .caret { visibility: hidden; }
.lane-time { justify-self: end; display: inline-flex; align-items: center; gap: 6px; font: 600 20px/1 var(--font-mono); font-variant-numeric: tabular-nums; }
.lane-time .ok { display: none; padding: 5px 9px; border-radius: 999px; background: var(--signal); color: var(--surface); font: 600 12px/1 var(--font-body); }
.lane-progress { grid-column: 1 / -1; height: 6px; border-radius: 999px; overflow: hidden; background: color-mix(in srgb, var(--muted) 18%, transparent); }
.lane-progress i { display: block; height: 100%; border-radius: inherit; background: var(--muted); }
.lane-talk .lane-progress { background: color-mix(in srgb, var(--paper) 18%, transparent); }
.lane-talk .lane-progress i { background: var(--signal); }
.lane-talk.done .lane-time { color: var(--signal); }
.lane-talk.done .lane-time .ok { display: inline; }
.duel-foot { font-size: clamp(17px, 1.8vw, 20px); }
.duel-foot b { color: var(--signal); }
.tape-note { font-size: 13px; color: var(--muted); }
@media (max-width: 720px) {
  .lane { grid-template-columns: minmax(0, 1fr) auto; gap: 10px 12px; padding: 14px 16px; }
  .lane-field { grid-column: 1 / -1; grid-row: 2; min-height: 4.5em; }
  .lane-progress { grid-row: 3; }
}

/* 示範卡 */
.demo {
  display: grid; gap: 18px;
  padding: 26px 26px 16px;
  background: var(--surface);
  border: 1px solid var(--line); border-radius: 24px;
  box-shadow: 0 24px 60px -28px color-mix(in srgb, var(--ink) 35%, transparent);
}
.spoken {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 14px 16px; border-radius: 16px;
  background: var(--paper); color: var(--muted);
  font-size: 15px; line-height: 1.6;
}
.spoken svg { flex: none; width: 20px; height: 18px; margin-top: 2px; color: var(--signal); }
.spoken .um { transition: opacity 0.6s ease 0.7s; }
.typed { padding-inline: 4px; font-size: clamp(18px, 2vw, 21px); line-height: 1.55; color: var(--ink); }
.typed .caret { width: 2px; height: 1.1em; vertical-align: -0.2em; }
.demo-foot {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding-top: 12px; border-top: 1px solid var(--line);
  font-size: 13.5px; color: var(--muted);
}
.demo-foot b { font-weight: 600; color: var(--ink); }
.sample s {
  text-decoration: line-through 2px var(--signal);
  color: color-mix(in srgb, var(--muted) 70%, transparent);
}
.wave { display: inline-flex; align-items: center; gap: 3px; height: 18px; }
.wave i {
  width: 3px; height: 100%; border-radius: 2px; background: currentColor;
  transform: scaleY(0.35); animation: talk 1.1s ease-in-out infinite;
}
.wave i:nth-child(3n) { animation-delay: -0.3s; }
.wave i:nth-child(3n+1) { animation-delay: -0.7s; }
.wave i:nth-child(4n) { animation-duration: 0.9s; }
.wave i:nth-child(5n) { animation-duration: 1.4s; }
@keyframes talk { 0%, 100% { transform: scaleY(0.25); } 50% { transform: scaleY(1); } }

/* App 列:各 App 的官方圖示(App Store 上架圖;Messages 取自 macOS 內建圖示),見 assets/apps/ */
.apps { max-width: var(--wrap); margin-inline: auto; padding-block: 8px 24px; display: grid; justify-items: center; gap: 20px; }
.apps p { font: 600 clamp(22px, 2.6vw, 30px)/1.2 var(--font-display); letter-spacing: -0.01em; color: var(--ink); }
.app-grid {
  display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 18px 10px;
  width: 100%; margin: 0; padding: 0; list-style: none;
}
.app-grid li { display: grid; justify-items: center; gap: 8px; min-width: 0; }
.app-grid img { display: block; width: 52px; height: 52px; border-radius: 22.5%; box-shadow: 0 0 0 1px color-mix(in srgb, var(--ink) 8%, transparent), 0 6px 14px -8px color-mix(in srgb, var(--ink) 45%, transparent); }
.app-grid span { max-width: 100%; font-size: 12px; color: var(--muted); text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
@media (max-width: 900px) { .app-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); } }
@media (max-width: 480px) { .app-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } .app-grid img { width: 48px; height: 48px; } }

/* 一般區段 */
.section { padding-block: 104px; }
.section-head { display: grid; gap: 14px; margin-bottom: 48px; max-width: 760px; }
.section-head p { color: var(--muted); font-size: 18px; max-width: 34em; }
@media (max-width: 720px) { .section { padding-block: 72px; } .section-head { margin-bottom: 36px; } }

/* 使用步驟 */
.steps {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px;
  padding: 0; margin: 0; list-style: none; counter-reset: step;
}
.steps li { display: grid; gap: 10px; align-content: start; counter-increment: step; }
.step-visual {
  height: 148px; margin-bottom: 10px;
  display: grid; place-items: center;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
}
.step-no { font: 500 12.5px/1 var(--font-mono); color: var(--muted); letter-spacing: 0.08em; }
.step-no::before { content: "STEP " counter(step); }
.steps p { color: var(--muted); }
.key-lg { font-size: 22px; min-width: 3.2em; padding: 16px 20px; border-radius: 12px; box-shadow: 0 4px 0 var(--line); }
.step-visual .wave { height: 44px; gap: 5px; color: var(--signal); }
.step-visual .wave i { width: 5px; }
.mini-field {
  width: min(78%, 240px); padding: 12px 14px;
  border: 1px solid var(--line); border-radius: 12px; background: var(--paper);
  font-size: 15px;
}
.mini-field .caret { width: 2px; height: 1.1em; vertical-align: -0.2em; }
@media (max-width: 860px) { .steps { grid-template-columns: minmax(0, 1fr); } .step-visual { height: 116px; } }
.key-globe svg { width: 26px; height: 26px; }
.dictate-pill {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 14px 24px; border-radius: 999px; background: var(--tint);
  font: 600 17px/1 var(--font-body);
}
.step-visual .dictate-pill .wave { height: 20px; gap: 3px; }
.step-visual .dictate-pill .wave i { width: 3px; }
.step-done { display: flex; align-items: center; gap: 10px; width: min(88%, 290px); }
.step-done .mini-field { flex: 1; width: auto; }
.key-row { display: flex; align-items: center; gap: 10px; color: var(--muted); font: 500 18px/1 var(--font-mono); }
.key-row .key-lg { font-size: 17px; min-width: 0; padding: 14px 16px; }

/* 中翻英 */
.spotlight { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.spotlight .section-head { margin-bottom: 0; }
.spotlight .demo { min-width: 0; }
.spotlight .um { opacity: 0.35; }
/* 多語言範例:上方語言按鈕(每 5 秒自動切換,點了就停),下方換成該語言的範例 */
.lang-switch { display: flex; flex-wrap: wrap; gap: 8px; }
.lang-tab {
  padding: 8px 14px; border-radius: 999px; cursor: pointer;
  background: var(--paper); border: 1px solid var(--line); color: var(--ink);
  font: 600 14px/1 var(--font-body);
}
.lang-tab span { color: var(--signal); }
.lang-tab[aria-selected="true"] { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.lang-stage { display: grid; }
.lang-item { grid-area: 1 / 1; display: grid; gap: 18px; align-content: start; visibility: hidden; }
.lang-item.is-active { visibility: visible; }
.lang-demo.is-moving .lang-item.is-active { animation: story-in 0.35s ease; }
.on-tag { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--ink); }
.on-tag::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--signal); }
@media (max-width: 900px) { .spotlight { grid-template-columns: minmax(0, 1fr); gap: 36px; } }

/* 精簡首頁:置中區塊標題、說的話→打出的字、AI 功能小卡、隱私徽章 */
.section-head.center { justify-items: center; text-align: center; margin-inline: auto; }
.aside-note { margin-top: 28px; text-align: center; font-size: 15px; color: var(--muted); }
.check-btn {
  flex: none; display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%;
  background: var(--ink); color: var(--paper); font: 700 18px/1 var(--font-body);
}
/* 「Say it messy」功能列(參考 Typeless Dictate 區):左邊功能名稱+一句說明,右邊「說的話」泡泡疊上「打出來的」卡片;
   被拿掉或修正的字用各功能的螢光色標出來 */
.feat-list { display: grid; gap: 64px; }
.feat { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 48px; align-items: center; }
.feat-copy h3 { font-size: clamp(26px, 3vw, 36px); line-height: 1.15; }
.feat-copy p { margin-top: 12px; max-width: 26em; font-size: 17px; color: var(--muted); }
.feat-visual {
  --hl: var(--signal);
  display: grid; align-content: center; gap: 0; min-height: 300px;
  padding: 44px clamp(20px, 4vw, 48px); border-radius: 28px; overflow: hidden;
  background:
    radial-gradient(60% 70% at 85% 15%, color-mix(in srgb, var(--hl) 28%, transparent), transparent 70%),
    radial-gradient(55% 60% at 10% 90%, color-mix(in srgb, var(--hl) 18%, transparent), transparent 70%),
    color-mix(in srgb, var(--hl) 6%, var(--surface));
  border: 1px solid var(--line);
}
.feat-orange .feat-visual { --hl: var(--signal); }
.feat-amber .feat-visual { --hl: #E9A11B; }
.feat-blue .feat-visual { --hl: #4C6FFF; }
.feat-green .feat-visual { --hl: #1FA36B; }
.feat-said, .feat-typed { box-sizing: border-box; }
.feat-said {
  justify-self: end; display: flex; gap: 10px; align-items: flex-start;
  width: min(100%, 440px); padding: 14px 16px; border-radius: 18px;
  background: var(--surface); font-size: 16px; line-height: 1.5; color: var(--muted);
  box-shadow: 0 14px 30px -18px color-mix(in srgb, var(--ink) 45%, transparent);
}
.feat-said svg { flex: none; width: 18px; height: 16px; margin-top: 3px; color: var(--hl); }
.feat-said mark {
  padding: 1px 3px; border-radius: 4px; color: inherit;
  background: color-mix(in srgb, var(--hl) 22%, transparent);
}
.feat-said mark.cut { text-decoration: line-through 2px var(--hl); }
.feat-said mark.fix { text-decoration: underline wavy 1.5px var(--hl); text-underline-offset: 3px; }
.feat-typed {
  position: relative; justify-self: start;
  width: min(100%, 440px); margin-top: -8px; padding: 16px 18px; border-radius: 18px;
  background: var(--surface); border: 1px solid color-mix(in srgb, var(--hl) 35%, var(--line));
  font-size: 17px; font-weight: 600; line-height: 1.5; color: var(--ink);
  box-shadow: 0 18px 36px -20px color-mix(in srgb, var(--ink) 50%, transparent);
}
.feat-typed mark.ok { padding: 1px 3px; border-radius: 4px; color: inherit; background: color-mix(in srgb, var(--hl) 22%, transparent); }
@media (max-width: 860px) {
  .feat { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .feat-list { gap: 48px; }
  .feat-visual { min-height: 0; padding: 28px 18px; }
  .feat-said, .feat-typed { width: 92%; }
}

.badges { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin: 0; padding: 0; list-style: none; }
.badges li {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 22px; border-radius: 20px;
  background: var(--surface); border: 1px solid var(--line);
}
.badges svg { flex: none; width: 26px; height: 26px; color: var(--signal); }
.badges b { display: block; font-size: 16px; }
.badges b + span { font-size: 14.5px; color: var(--muted); }
@media (max-width: 860px) { .badges { grid-template-columns: minmax(0, 1fr); } }
.ticks { display: grid; gap: 8px; margin: 4px 0 0; padding: 0; list-style: none; font-size: 15px; }
.ticks li { display: flex; gap: 10px; align-items: baseline; }
.ticks li::before { content: ""; flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--signal); transform: translateY(-2px); }

/* 定價 */
.plans { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; max-width: 880px; }
.plan {
  display: grid; gap: 14px; align-content: start; min-width: 0;
  padding: 28px; border-radius: 24px;
  background: var(--surface); border: 1px solid var(--line);
}
.plan.pro { border: 2px solid var(--ink); }
.plan-name { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.plan-name h3 { font-size: 24px; }
.pill {
  padding: 5px 10px; border-radius: 999px;
  background: var(--tint); color: var(--ink);
  font: 500 11.5px/1 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase;
}
.price { display: flex; align-items: baseline; gap: 6px; }
.price b { font: 600 48px/1 var(--font-display); letter-spacing: -0.02em; }
.price span { color: var(--muted); }
.price b.soon { font-size: clamp(30px, 3.4vw, 38px); }
.price-alt { margin-top: -6px; font-size: 14px; color: var(--muted); }
.plans-note { margin-top: 20px; font-size: 13px; color: var(--muted); }
@media (max-width: 720px) { .plans { grid-template-columns: minmax(0, 1fr); } }

/* Lab */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0 32px; margin: 0; }
.stat { display: grid; gap: 8px; align-content: start; padding-top: 22px; border-top: 2px solid var(--ink); min-width: 0; }
.stat dt { order: 2; font-size: 15px; color: var(--muted); }
.stat dd { order: 1; margin: 0; font: 600 clamp(30px, 3.1vw, 38px)/1.05 var(--font-display); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; white-space: nowrap; }
.lab-follow { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 36px; color: var(--muted); font-size: 15px; }
@media (max-width: 960px) { .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; } }
@media (max-width: 560px) { .stats { grid-template-columns: minmax(0, 1fr); } }

/* 使用者心得:橫向自動輪播,滑鼠移上去會停 */
.reviews {
  overflow: hidden; padding-block: 4px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
}
.reviews-track { display: flex; gap: 20px; width: max-content; animation: marquee 70s linear infinite; }
.reviews:hover .reviews-track, .reviews:focus-within .reviews-track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(calc(-50% - 10px)); } }
.review {
  flex: none; width: min(340px, 78vw); margin: 0;
  display: grid; grid-template-rows: 1fr auto; gap: 32px;
  padding: 28px; border-radius: 24px;
  background: var(--surface); border: 1px solid var(--line);
}
.review blockquote { margin: 0; font: 600 21px/1.4 var(--font-display); letter-spacing: -0.01em; text-wrap: pretty; }
.reviewer { display: flex; align-items: center; gap: 12px; }
.reviewer b { display: block; font-size: 15px; }
.reviewer b + span { font-size: 14px; color: var(--muted); }
.avatar {
  flex: none; display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%;
  background: var(--tint); color: var(--ink); font: 600 16px/1 var(--font-display);
}
.review:nth-child(3n+2) .avatar { background: color-mix(in srgb, var(--signal) 20%, var(--surface)); }
.review:nth-child(3n) .avatar { background: color-mix(in srgb, var(--night) 16%, var(--surface)); }
.sample-note { margin-top: 20px; text-align: center; font-size: 13px; color: var(--muted); }
.eyebrow .pill { letter-spacing: 0.06em; }
@media (prefers-reduced-motion: reduce) { .reviews { overflow-x: auto; } }

/* 社群連結 */
.socials { display: flex; gap: 8px; }
.social {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px 8px 10px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--surface);
  font-size: 14px; color: var(--ink); text-decoration: none;
}
.social:hover { border-color: var(--muted); }
.social svg { width: 16px; height: 16px; }

/* 常見問題 */
.faq { max-width: 820px; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding-block: 22px; cursor: pointer; list-style: none;
  font-size: 18px; font-weight: 600;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; flex: none;
  font: 400 26px/1 var(--font-mono); color: var(--muted);
  transition: transform 0.2s ease;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding-bottom: 24px; color: var(--muted); max-width: 40em; }


/* 頁尾 */
.footer { max-width: var(--wrap); margin-inline: auto; padding-block: 72px 40px; display: grid; gap: 48px; }
.footer-top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 40px; }
.footer-top > div:first-child { display: grid; gap: 12px; align-content: start; }
.footer-top > div:first-child p { color: var(--muted); }
.footer-cols { display: flex; flex-wrap: wrap; gap: 56px; }
.footer-cols div { display: grid; gap: 10px; align-content: start; font-size: 15px; }
.footer-cols h4 { margin: 0 0 4px; font: 500 12px/1 var(--font-mono); letter-spacing: 0.08em; color: var(--muted); }
.footer-cols a { text-decoration: none; }
.footer-cols a:hover { text-decoration: underline; }
.footer-bottom { padding-top: 24px; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }

/* 提示 */
.toast {
  position: fixed; left: 50%; bottom: calc(24px + env(safe-area-inset-bottom, 0px)); z-index: 30;
  transform: translateX(-50%);
  max-width: calc(100% - 32px);
  padding: 12px 18px; border-radius: 999px;
  background: var(--ink); color: var(--paper);
  font-size: 14px; box-shadow: 0 12px 30px -12px color-mix(in srgb, var(--ink) 50%, transparent);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* 多頁共用:目前頁面、手機選單 */
.nav-links a[aria-current="page"] { color: var(--ink); background: var(--paper); }
.nav-menu { display: none; position: relative; margin-left: auto; }
.nav-menu summary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 16px; border-radius: 999px; cursor: pointer; list-style: none;
  background: var(--ink); color: var(--paper); font: 600 14px/1 var(--font-body);
}
.nav-menu summary::-webkit-details-marker { display: none; }
.nav-menu-panel {
  position: absolute; right: 0; top: calc(100% + 10px); z-index: 30;
  display: grid; min-width: 200px; padding: 8px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px;
  box-shadow: 0 18px 40px -20px color-mix(in srgb, var(--ink) 45%, transparent);
}
.nav-menu-panel a { padding: 11px 14px; border-radius: 10px; text-decoration: none; font-size: 16px; }
.nav-menu-panel a:hover, .nav-menu-panel a[aria-current="page"] { background: var(--paper); }
@media (max-width: 720px) { .nav-menu { display: block; } }

/* 子頁面標題 */
/* Features 分頁:3 組功能,每組一排卡片;卡片上方是小示範(說的 → 打出來),沿用首頁 feat-said / feat-typed 的樣式 */
.see-all { margin-top: 40px; text-align: center; }
.see-all a { font-weight: 600; font-size: 17px; text-decoration: none; color: var(--ink); border-bottom: 2px solid var(--signal); padding-bottom: 2px; }
.fjump { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.fjump a {
  padding: 9px 16px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface);
  color: var(--ink); text-decoration: none; font: 600 14px/1 var(--font-body);
}
.fjump a:hover { border-color: var(--muted); }
.fgroup { padding-block: 40px 72px; scroll-margin-top: 80px; }
.fgroup + .section { padding-top: 24px; }
.fgroup-blue { --hl: #4C6FFF; }
.fgroup-orange { --hl: var(--signal); }
.fgroup-green { --hl: #1FA36B; }
.fgroup-head { display: grid; gap: 10px; margin-bottom: 32px; }
.fgroup-head .eyebrow { color: var(--hl); }
.fgroup-head p:last-child { color: var(--muted); font-size: 18px; }
.fgrid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.fcard { display: grid; align-content: start; gap: 8px; padding: 14px 14px 26px; border-radius: 28px; background: var(--surface); border: 1px solid var(--line); }
.fcard h3 { margin-top: 14px; padding-inline: 12px; font-size: 24px; line-height: 1.2; }
.fcard > p { padding-inline: 12px; font-size: 16px; color: var(--muted); max-width: 30em; }
.fcard-visual {
  display: grid; align-content: center; justify-items: center; gap: 0; min-height: 210px;
  padding: 28px 22px; border-radius: 20px; overflow: hidden;
  background:
    radial-gradient(60% 70% at 85% 15%, color-mix(in srgb, var(--hl) 24%, transparent), transparent 70%),
    radial-gradient(55% 60% at 10% 90%, color-mix(in srgb, var(--hl) 14%, transparent), transparent 70%),
    color-mix(in srgb, var(--hl) 6%, var(--surface));
}
.fcard-visual .feat-said, .fcard-visual .feat-typed { width: min(100%, 380px); font-size: 15px; }
.fcard-visual .feat-said { justify-self: end; }
.fcard-visual .feat-typed { justify-self: start; font-size: 16px; }
.fcard-visual .feat-said mark:not([class]) { text-decoration: none; }
.feat-note { display: inline-block; margin-left: 8px; padding: 4px 8px; border-radius: 999px; background: var(--ink); color: var(--paper); font: 600 11px/1 var(--font-body); vertical-align: 2px; white-space: nowrap; }
.fx-icons { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 12px; }
.fx-icons img { width: 44px; height: 44px; border-radius: 22.5%; box-shadow: 0 0 0 1px color-mix(in srgb, var(--ink) 8%, transparent), 0 6px 14px -8px color-mix(in srgb, var(--ink) 45%, transparent); }
.fx-more { font: 600 14px/1 var(--font-body); color: var(--muted); }
.fx-keys { display: flex; align-items: center; gap: 12px; font: 600 20px/1 var(--font-body); color: var(--muted); }
.fx-keys kbd {
  display: inline-grid; place-items: end start; min-width: 76px; height: 64px; padding: 10px 12px;
  border-radius: 14px; background: var(--surface); color: var(--ink);
  border: 1px solid var(--line); box-shadow: 0 4px 0 color-mix(in srgb, var(--ink) 12%, var(--line));
  font: 500 14px/1 var(--font-body);
}
.fx-keys kbd.wide { min-width: 170px; }
.fx-tag, .fx-context { justify-self: start; margin-bottom: 10px; font: 600 13px/1 var(--font-body); }
.fx-tag { padding: 7px 12px; border-radius: 999px; background: var(--ink); color: var(--paper); }
.fx-tag span { color: var(--signal); }
.fx-context { box-sizing: border-box; display: grid; gap: 6px; width: min(100%, 380px); padding: 10px 14px; border-radius: 14px; border: 1px dashed color-mix(in srgb, var(--hl) 45%, var(--line)); background: color-mix(in srgb, var(--surface) 70%, transparent); color: var(--ink); font-weight: 500; font-size: 15px; }
.fx-context span { font: 500 11px/1 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
@media (max-width: 860px) {
  .fgrid { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .fgroup { padding-block: 24px 48px; }
  .fcard-visual { min-height: 0; padding: 24px 16px; }
  .fcard-visual .feat-said, .fcard-visual .feat-typed, .fx-context { width: 94%; }
  .fx-keys kbd { min-width: 64px; height: 56px; }
  .fx-keys kbd.wide { min-width: 130px; }
}

.page-head { max-width: var(--wrap); margin-inline: auto; padding-block: 72px 56px; display: grid; gap: 16px; }
.page-head h1 { font-size: clamp(44px, 6.4vw, 76px); line-height: 1.02; letter-spacing: -0.025em; max-width: 14em; }
.page-head .page-lede { font-size: clamp(17px, 1.7vw, 19px); color: var(--muted); max-width: 34em; }
.page-body { max-width: var(--wrap); margin-inline: auto; padding-bottom: 88px; }
.page-body + .section { padding-top: 0; }
@media (max-width: 720px) { .page-head { padding-block: 40px 36px; } }

/* 主頁導流卡片 */
.more { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.more-card {
  display: grid; gap: 10px; align-content: start; min-width: 0;
  padding: 24px; border-radius: 24px;
  background: var(--surface); border: 1px solid var(--line);
  color: var(--ink); text-decoration: none;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.more-card:hover { border-color: var(--muted); transform: translateY(-2px); }
.more-card h3 { font-size: 26px; }
.more-card p { color: var(--muted); font-size: 15px; }
.more-go { margin-top: 6px; font-weight: 600; font-size: 15px; }
@media (max-width: 860px) { .more { grid-template-columns: minmax(0, 1fr); } }

/* Lab:怎麼測 */
.method { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.method article {
  display: grid; gap: 10px; align-content: start; min-width: 0;
  padding: 24px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--line);
}
.method h3 { font-size: 19px; }
.method p { font-size: 15px; color: var(--muted); }
@media (max-width: 960px) { .method { grid-template-columns: minmax(0, 1fr); } }

@keyframes story-in { from { opacity: 0; transform: translateY(12px); } }

/* legal pages */
.legal { max-width: 760px; }
.legal h2 { font-size: 22px; line-height: 1.3; margin: 40px 0 12px; }
.legal p, .legal li { color: var(--muted); }
.legal p + p { margin-top: 12px; }
.legal ul { padding-left: 1.2em; list-style: disc; display: grid; gap: 6px; margin-top: 12px; }
.legal a { color: inherit; text-decoration: underline; text-underline-offset: 3px; }
.footer-bottom a { color: inherit; }