@font-face {
  font-family: "Bricolage Grotesque";
  src: url("assets/fonts/bricolage-latin.woff2") format("woff2");
  font-weight: 200 800;
  font-display: swap;
}

:root {
  color-scheme: dark;
  /* 深色主题：黑色背景、浅色正文与冷青点缀。 */
  --bg: #000000;
  --surface: #141416;
  --surface-2: #252529;
  --ink: #f4f4f6;
  --ink-soft: #d5d5dd;
  --muted: #aaaab5;
  --muted-soft: #92929f;

  /* 那块屏：真的深色，不是浅灰卡片 */
  --scr: #131316;
  --scr-2: #1c1c20;
  --scr-3: #25262c;
  --scr-ink: #f2f2f4;
  --scr-muted: #9c9ca4;
  --cold: #7fe3ef;
  /* 命令表选中行的深墨青：同一家族的冷色，不是另一个强调色 */
  --deep: #12332f;

  /* 五级字号 */
  --t-sm: 0.875rem;
  --t-body: 1.0625rem;
  --t-lead: clamp(1.125rem, 1.05rem + 0.35vw, 1.3125rem);
  --t-h: clamp(1.875rem, 1.4rem + 2.1vw, 3rem);
  --t-hero: clamp(2.375rem, 1.5rem + 4vw, 4.5rem);

  --gutter: clamp(20px, 4.4vw, 56px);
  --max: 1440px;
  --gap: clamp(80px, 10vw, 160px);
  --r: 0px;
  /* 粘住的那条导航多高：跳转时的 scroll-margin、手机上的吸附定位都靠它 */
  --nav-h: 68px;
}
@media (max-width: 720px) { :root { --nav-h: 60px; } }

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Bricolage Grotesque", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: var(--t-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  font-optical-sizing: auto;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
::selection { background: var(--ink); color: var(--bg); }

.sr {
  position: absolute; width: 1px; height: 1px; /* taste-skill-ignore hairline — 读屏专用，永不绘制 */ padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.skip {
  position: absolute; left: var(--gutter); top: -60px; z-index: 100;
  background: var(--ink); color: var(--bg);
  padding: 10px 16px; font-size: var(--t-sm);
}
.skip:focus { top: 12px; }

:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }

/* 按钮：一种形状，直角 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: inherit; font-size: var(--t-sm); font-weight: 500;
  padding: 14px 26px; border-radius: var(--r); border: 0; cursor: pointer;
  white-space: nowrap;
  transition: background-color .16s ease, color .16s ease, transform .16s ease;
}
.btn-ink { background: var(--ink); color: var(--bg); }
.btn-ink:hover { background: #d5d5dd; }
.btn-ink:active { transform: translateY(1px); }
.btn-sm { padding: 10px 18px; }

/* 导航 */
/* 导航和正文共用同一个内容宽度与内边距，右边缘才对得上 */
.nav {
  position: sticky; top: 0; z-index: 40;
  height: var(--nav-h);
  display: flex; align-items: center; gap: clamp(16px, 3vw, 44px);
  padding: 0 var(--gutter);
  background: var(--bg);
  max-width: var(--max);
  margin: 0 auto;
}
/* sticky 导航的底色要铺满整屏宽，否则两侧会漏出下面的内容 */
.nav::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 100vw;
  transform: translateX(-50%);
  background: var(--bg);
  z-index: -1;
}
.mark { display: inline-flex; align-items: center; gap: 9px; flex: none; }
.mark-logo { display: block; width: 99px; height: auto; background: transparent; border-radius: 0; padding: 0; }
.mark-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ink); flex: none; }
.mark-word { font-size: 1.0625rem; font-weight: 600; letter-spacing: -0.01em; }
.nav-links { display: flex; gap: clamp(14px, 2.4vw, 32px); font-size: var(--t-sm); color: var(--muted); }
.nav-links a { transition: color .16s ease; }
.nav-links a:hover, .nav-links a:focus-visible, .nav-links a[aria-current="page"] { color: var(--ink); }
.nav > .btn, .nav-right { margin-left: auto; }

@media (max-width: 720px) { .nav-links { display: none; } }

/* ================= 首屏 ================= */
/* 标题独占整行，下面才是文案 + 那块屏。标题因此不会被挤到四行。 */
.hero {
  max-width: var(--max); margin: 0 auto; scroll-margin-top: 0;
  padding: clamp(20px, 3vw, 44px) var(--gutter) clamp(28px, 3.4vw, 46px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-areas: "head head" "copy screen" "cta cta";
  gap: clamp(28px, 4vw, 56px) clamp(32px, 4.6vw, 64px);
  align-items: start;
}

.hero h1 {
  grid-area: head;
  margin: 0;
  font-size: var(--t-hero);
  font-weight: 500;
  line-height: 1.06;          /* 中文不吃 0.92，会撞在一起 */
  letter-spacing: -0.05em;
  max-width: 22em;
}
.hero-copy { grid-area: copy; }
.hero-say {
  margin: 0;
  font-size: var(--t-lead);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 21em;
}
.hero-actions { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; margin: clamp(24px, 3vw, 32px) 0 0; }
.hero-link {
  font-size: var(--t-sm); color: var(--muted);
  display: inline-flex; align-items: center; gap: 7px;
  transition: color .16s ease, gap .16s ease;
}
.hero-link:hover { color: var(--ink); gap: 11px; }

@media (max-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "head" "copy" "screen" "cta";
    align-content: start;
  }
  .hero-cta { grid-column: auto; gap: 22px; margin-top: clamp(20px, 4vw, 28px); }
}

/* ================= 那块屏 ================= */
.screen {
  margin: 0;
  background: var(--scr);
  color: var(--scr-ink);
  border-radius: 8px;
  font-size: 0.875rem;
  line-height: 1.45;
  overflow: hidden;
}
.screen-bar {
  display: flex; align-items: center; gap: 9px;
  padding: 16px 20px 0;
  font-size: var(--t-sm);
  color: var(--scr-muted);
}
.live {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cold); flex: none;
  animation: live 2.4s ease-in-out infinite;
}
@keyframes live { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .35; transform: scale(.86); } }
.screen-title { color: var(--scr-ink); font-weight: 500; }
.screen-where { margin-left: auto; font-size: 0.75rem; }

/* --- 首屏里那块屏：三个状态叠在同一个格子里，格子高度取最高那个——
   只切内容，卡片本身一帧都不动。 --- */
/* --- 屏 + 开始使用 是一个整体：桌面上一行（屏在右、按钮在左下），手机上一列（屏在上、按钮紧跟） --- */
.hero-stage {
  display: contents;
}
/* 桌面：左下放「开始使用」+「看它怎么用」，整组横跨两栏，两个控件挨着 */
.hero-cta {
  grid-area: cta;
  grid-column: 1 / -1;
  justify-self: start;
  display: flex; align-items: center; gap: 26px; flex-wrap: wrap;
  margin-top: clamp(24px, 3vw, 32px);
}
.hero-screen { grid-area: screen; }
.hero-screen .screen-bar,
.hero-screen .demo-beat { grid-column: 1; }
.hero-screen { display: grid; grid-template-columns: minmax(0, 1fr); align-content: start; }
.demo-beat {
  grid-row: 2;
  visibility: hidden;
  padding: 18px 20px 14px;
}
.demo-beat.is-on { visibility: visible; z-index: 1; }
.beat-k {
  margin: 0 0 8px;
  font-size: 0.6875rem;
  letter-spacing: .04em;
  color: var(--scr-muted);
}
.demo-beat.is-on .beat-k { color: var(--cold); }

.demo-said {
  margin: 0; font-size: 1rem; line-height: 1.5; font-weight: 500;
  color: var(--scr-ink);
}
.demo-wave { display: flex; align-items: flex-end; gap: 4px; height: 30px; margin-top: 12px; }
.demo-wave i { display: block; width: 4px; border-radius: 2px; background: var(--cold); animation: wave 1.15s ease-in-out infinite; }
.demo-wave i:nth-child(1) { height: 14%; animation-delay: 0s; }
.demo-wave i:nth-child(2) { height: 42%; animation-delay: .09s; }
.demo-wave i:nth-child(3) { height: 70%; animation-delay: .18s; }
.demo-wave i:nth-child(4) { height: 100%; animation-delay: .27s; }
.demo-wave i:nth-child(5) { height: 78%; animation-delay: .36s; }
.demo-wave i:nth-child(6) { height: 52%; animation-delay: .45s; }
.demo-wave i:nth-child(7) { height: 88%; animation-delay: .54s; }
.demo-wave i:nth-child(8) { height: 44%; animation-delay: .63s; }
.demo-wave i:nth-child(9) { height: 16%; animation-delay: .72s; }
@keyframes wave { 0%, 100% { transform: scaleY(.3); } 50% { transform: scaleY(1); } }

.demo-wins { list-style: none; margin: 0; padding: 0; display: grid; gap: 3px; }
.demo-wins li {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 13px; border-radius: 5px; background: var(--scr-2);
  font-size: 0.8125rem;
}
.demo-wins span { color: var(--scr-muted); }
.demo-wins b { margin-left: auto; font-weight: 500; color: var(--scr-ink); }

.demo-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 3px; }
.demo-steps li {
  display: grid; grid-template-columns: 3.2em minmax(0, 1fr);
  gap: 10px; align-items: baseline;
  padding: 10px 13px; border-radius: 5px; background: var(--scr-2);
  font-size: 0.8125rem;
}
.demo-steps .step { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; min-width: 0; }
.demo-steps b { font-weight: 500; white-space: nowrap; }
.demo-steps em { font-style: normal; color: var(--scr-muted); font-size: 0.75rem; font-variant-numeric: tabular-nums; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.demo-steps .tag { font-size: 0.6875rem; color: var(--scr-muted); align-self: center; }
.demo-steps .is-now { background: var(--scr-3); }
.demo-steps .is-now .tag { color: var(--cold); }
.caret {
  display: inline-block; width: 6px; height: 12px; margin-left: 3px;
  background: var(--cold); vertical-align: -1px;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }

/* ================= 通用节 ================= */
/* 顶导航是粘住的：任何被跳转到的节，都要把标题让到导航下面，而不是钻进去 */
section[id] { scroll-margin-top: var(--nav-h); }

.section {
  max-width: var(--max);
  margin: var(--gap) auto 0;
  padding: 0 var(--gutter);
  scroll-margin-top: calc(var(--nav-h) + 24px);
}
.sec-head {
  margin: 0;
  font-size: var(--t-h);
  font-weight: 500;
  line-height: 1.14;
  letter-spacing: -0.04em;
  max-width: 18em;
}
.sec-say {
  margin: clamp(14px, 1.8vw, 20px) 0 0;
  font-size: var(--t-body);
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 34em;
}

/* --- 认识小灵：形象在左，三行说明在右 --- */
.meet {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(28px, 4.4vw, 64px);
  align-items: start;
}
.meet-media img {
  display: block;
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: 8px;
}
/* 小人：浮起来、轻轻歪头、抬手，三种周期错开，看起来是在呼吸而不是在循环播放 */
.ghost {
  transform-origin: 50% 92%;
  animation: breathe 5.6s ease-in-out infinite;
}
@keyframes breathe {
  0%, 100% { transform: translateY(0) scale(1, 1); }
  50% { transform: translateY(-1.4%) scale(0.988, 1.014); }
}
@media (prefers-reduced-motion: reduce) {
  .ghost { animation: none; }
}
.traits {
  margin: clamp(26px, 3.4vw, 40px) 0 0;
  display: grid;
  gap: clamp(20px, 2.6vw, 30px);
}
.traits dt {
  margin: 0 0 7px;
  font-size: var(--t-lead);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.25;
}
.traits dd {
  margin: 0;
  font-size: var(--t-body);
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 26em;
}
@media (max-width: 860px) {
  .meet { grid-template-columns: minmax(0, 1fr); }
  .meet-media { max-width: 380px; }
}

/* ================= 数据在哪：一整块深色 ================= */
.field {
  margin-top: var(--gap);
  background: var(--scr);
  color: var(--scr-ink);
  padding: clamp(52px, 7vw, 104px) 0;
}
.field-in { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.field .sec-head { color: var(--scr-ink); max-width: 15em; }
.field .sec-say { color: #cbcbd2; }

/* 数据流向：两块，中间一句 */
.flow {
  margin: clamp(30px, 4vw, 48px) 0 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: stretch;
  gap: clamp(10px, 1.6vw, 20px);
  max-width: 56em;
}
.flow-node {
  background: var(--scr-2);
  border-radius: 6px;
  padding: 18px 20px;
}
.flow-local { background: var(--scr-3); }
.flow-local .flow-name { color: var(--cold); }
.flow-name { margin: 0 0 6px; font-size: 1rem; font-weight: 500; }
.flow-items { margin: 0; font-size: 0.8125rem; line-height: 1.5; color: var(--scr-muted); }
.flow-link {
  margin: 0;
  display: flex; align-items: center;
  font-size: 0.75rem; line-height: 1.4; color: var(--scr-muted);
  max-width: 9em; text-align: center;
}
@media (max-width: 760px) {
  .flow { grid-template-columns: minmax(0, 1fr); }
  .flow-link { max-width: none; text-align: left; padding: 4px 0; }
}

.facts {
  margin: clamp(30px, 4vw, 48px) 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(22px, 3.2vw, 44px);
}
.facts dt {
  margin: 0 0 8px;
  font-size: var(--t-sm);
  font-weight: 500;
  color: var(--cold);
}
.facts dd {
  margin: 0;
  font-size: var(--t-body);
  line-height: 1.55;
  color: #e2e2e8;
  max-width: 26em;
}
@media (max-width: 820px) {
  .facts { grid-template-columns: minmax(0, 1fr); gap: 24px; }
}

/* --- 能做什么：它自己的命令表 --- */
.cmds { margin-top: clamp(26px, 3.4vw, 40px); }
.cmds-bar {
  display: flex; align-items: baseline; gap: 12px;
  margin-bottom: 10px;
  font-size: var(--t-sm);
}
.cmds-label { font-weight: 500; }
.cmds-hint { color: var(--muted); }

.cmd-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.cmd-row {
  display: grid;
  grid-template-columns: 7.5em minmax(0, 1fr);
  gap: clamp(14px, 3vw, 40px);
  align-items: baseline;
  width: 100%;
  padding: 16px 18px;
  font: inherit;
  text-align: left;
  background: var(--surface);
  border: 0;
  border-radius: var(--r);
  cursor: pointer;
  transition: background-color .18s ease, color .18s ease;
}
.cmd-row:hover { background: var(--surface-2); }
.cmd-name {
  font-size: var(--t-lead);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.25;
}
.cmd-say {
  font-size: var(--t-body);
  line-height: 1.55;
  color: var(--muted);
}

/* 命令表：没选中的是灰底黑字，选中的是黑底亮青（和深色屏的冷青同一个色） */
.cmd-row { background: var(--surface); color: var(--ink); }
.cmd-row:hover { background: var(--surface-2); }
.cmd-name { color: var(--ink); }
.cmd-say { color: var(--muted); }

.cmd.is-on .cmd-row { background: var(--scr); color: var(--scr-ink); }
.cmd.is-on .cmd-name { color: var(--cold); }
.cmd.is-on .cmd-say { color: var(--scr-ink); }

@media (max-width: 720px) {
  .cmd-row { grid-template-columns: minmax(0, 1fr); gap: 8px; padding: 15px 16px; }
  .cmd-say { font-size: 1rem; }
}

/* --- 记忆：一条真实的记录，说明它记住了什么 --- */
.memory { margin-top: clamp(30px, 4vw, 48px); max-width: 40em; }
.memory-bar {
  display: flex; align-items: center; gap: 9px;
  font-size: var(--t-sm); color: var(--scr-muted);
  margin-bottom: 10px;
}
.memory-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.memory-list li {
  display: grid; grid-template-columns: 4.2em minmax(0, 1fr) auto;
  gap: 12px; align-items: baseline;
  padding: 11px 14px; border-radius: 5px; background: var(--scr-2);
  font-size: 0.8125rem;
}
.memory-list .mk { color: var(--scr-muted); font-size: 0.6875rem; }
.memory-list .mv { color: var(--scr-ink); }
.memory-list .mt { color: var(--scr-muted); font-size: 0.75rem; font-variant-numeric: tabular-nums; }
@media (max-width: 620px) {
  .memory-list li { grid-template-columns: minmax(0, 1fr) auto; }
  .memory-list .mk { display: none; }
}

/* ================= 怎么用 ================= */
/* 标题放在栅格外面：手机上钉住的那块屏就不会盖住它 */
.how-wrap .sec-head { max-width: 16em; }
.how {
  margin-top: clamp(26px, 3.4vw, 42px);
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(28px, 5vw, 76px);
  align-items: start;
}
.beat { padding: min(24svh, 176px) 0; }
.beat:first-child { padding-top: 0; }
.beat:last-child { padding-bottom: 0; }
.beat h3 {
  margin: 0 0 9px;
  font-size: var(--t-lead);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--muted-soft);
  transition: color .3s ease;
}
.beat p {
  margin: 0;
  font-size: var(--t-body);
  line-height: 1.6;
  color: var(--muted-soft);
  max-width: 26em;
  transition: color .3s ease;
}
.beat.is-on h3, .beat.is-on p { color: var(--ink); }

.how-stage { position: sticky; top: 12svh; }
.stage-screen { min-height: 300px; padding: 0 0 16px; }

.st { display: none; padding: 18px 20px 4px; }
.stage-screen[data-stage="one"] .st-one,
.stage-screen[data-stage="two"] .st-two,
.stage-screen[data-stage="three"] .st-three { display: block; }

.st-line {
  display: flex; align-items: center; gap: 14px;
  margin: 0 0 3px; padding: 12px 14px;
  background: var(--scr-2); border-radius: 5px;
  font-size: 0.875rem;
}
.st-k { color: var(--scr-muted); font-size: 0.75rem; min-width: 3.6em; }
.st-line b { font-weight: 500; }
.st-meta { margin: 13px 0 0; font-size: 0.75rem; color: var(--scr-muted); }
.st-said { margin: 2px 0 0; font-size: 1rem; line-height: 1.5; font-weight: 500; }

@media (max-width: 900px) {
  .how { grid-template-columns: minmax(0, 1fr); }
  .how-stage { position: sticky; top: 0; z-index: 5; order: -1; background: var(--bg); padding: 8px 0 16px; }
  .stage-screen { min-height: 0; }
  .beat { padding: 38svh 0 0; }
  .beat:first-child { padding-top: 24px; }
  .beat:last-child { padding-bottom: 24svh; }
}

/* ================= 常见问题 ================= */
.faq {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(24px, 4vw, 64px);
  align-items: start;
}
.faq-head { position: sticky; top: calc(var(--nav-h) + 16px); }
.faq-list { display: grid; gap: 8px; }

.faq-list details {
  background: var(--surface);
  transition: background-color .2s ease, color .2s ease;
}
.faq-list details[open] { background: var(--ink); color: var(--bg); }
.faq-list summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 24px;
  font-size: var(--t-lead);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.3;
  display: flex; align-items: center; gap: 20px;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  margin-left: auto; flex: none;
  font-size: 1.5em; font-weight: 300; line-height: 1;
}
.faq-list details[open] summary::after { content: "−"; }
.faq-list p {
  margin: 0;
  padding: 0 24px 22px;
  font-size: var(--t-body);
  line-height: 1.6;
  max-width: 52ch;
}

@media (max-width: 900px) {
  .faq { grid-template-columns: minmax(0, 1fr); }
  .faq-head { position: static; }
  .faq-list { gap: 6px; }
  .faq-list summary { padding: 18px 20px; font-size: 1.0625rem; }
  .faq-list p { padding: 0 20px 20px; font-size: 1rem; }
}

/* ================= 页脚 ================= */
.foot {
  max-width: var(--max);
  margin: var(--gap) auto 0;
  padding: 0 var(--gutter) 40px;
}
.foot-tiles {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 8px;
}
.tile { background: var(--surface); padding: 22px; }
.tile-say { grid-column: 1 / 8; min-height: 260px; display: flex; align-items: flex-start; }
.tile-say p {
  margin: 0;
  font-size: clamp(1.25rem, 1.9vw, 1.5rem);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.025em;
  max-width: 9em;
}
.tile-nav { grid-column: 8 / 13; min-height: 260px; display: flex; align-items: flex-start; }
.tile-nav ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; font-size: var(--t-body); }
.tile-nav a { color: var(--muted); transition: color .16s ease; }
.tile-nav a.foot-wx { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.tile-nav a:hover { color: var(--ink); }
.tile-wx { color: var(--ink); }

.foot-close { margin-top: 8px; }
.tile-word {
  grid-column: 1 / 9;
  position: relative;
  min-height: 220px;
  background: var(--ink);
  color: var(--bg);
  display: flex; align-items: flex-end; justify-content: center; gap: 0.2em;
  padding: 0 22px clamp(30px, 3.6vw, 52px);
  overflow: hidden;
}
/* 冷色光晕从下往上渗出来，像屏亮着 */
.word-glow {
  position: absolute; left: 50%; bottom: -38%;
  width: 84%; height: 118%; transform: translateX(-50%);
  background: radial-gradient(ellipse 50% 50% at 50% 50%, color-mix(in srgb, var(--cold) 30%, transparent), transparent 78%);
  pointer-events: none;
}
.word-badge {
  position: absolute; top: 22px; left: 0; right: 0;
  justify-content: center;
  display: inline-flex; align-items: center; gap: 8px; white-space: nowrap;
  font-size: var(--t-sm); color: var(--cold); letter-spacing: .02em;
}
.tile-word .word {
  position: relative;
  font-size: clamp(2.5rem, 7.4vw, 5.75rem); font-weight: 500; letter-spacing: -0.05em; line-height: 1;
}
.tile-word .word-en {
  position: relative;
  font-size: clamp(2.5rem, 7.4vw, 5.75rem); font-weight: 300; letter-spacing: -0.05em; line-height: 1;
  color: color-mix(in srgb, var(--cold) 46%, var(--scr-muted));
}
.tile-go {
  grid-column: 9 / 13;
  background: var(--surface);
  min-height: 220px;
  display: flex; flex-direction: column; justify-content: space-between;
  font-size: clamp(1.125rem, 1.8vw, 1.5rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  transition: background-color .16s ease;
}
.tile-go:hover { background: var(--surface-2); }
.go-arrow { align-self: flex-end; transition: transform .18s ease, color .18s ease; }
.tile-go:hover .go-arrow { transform: translateX(6px); color: #0e7c8c; }

.foot-moss {
  margin: 8px 0 0;
  display: flex; gap: 10px; flex-wrap: wrap; justify-content: space-between;
  padding: 16px 22px;
  font-size: var(--t-sm);
  color: var(--muted);
}
.foot-moss a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }

.foot-legal {
  margin: 18px 0 0;
  display: flex; gap: 10px; flex-wrap: wrap;
  font-size: var(--t-sm); color: var(--muted);
}
.foot-legal a:hover { color: var(--ink); }

@media (max-width: 900px) {
  .foot-tiles { grid-template-columns: minmax(0, 1fr); }
  .tile-say, .tile-nav, .tile-mail { grid-column: 1 / -1; }
  .tile-say { min-height: 0; }
  .tile-word, .tile-go { grid-column: 1 / -1; }
  .tile-word { min-height: 140px; }
  .tile-go { min-height: 116px; }
}

/* ================= 入场动效 ================= */
.rise {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s ease, transform .5s ease;
}
.rise.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rise { opacity: 1; transform: none; transition: none; }
  .live, .demo-wave i, .caret { animation: none; }
  .st { animation: none; }
  .demo-beat { opacity: 1; }
}

/* ===================================================================
   子页面（联系 / 邀请 / 案例 / 下载 / 常见问题 / 账号）
   同一套 token，同一套内边距，不引入第二种视觉语言。
   =================================================================== */

.nav-right { display: flex; align-items: center; gap: 16px; margin-left: auto; }
.nav-quiet { font-size: var(--t-sm); color: var(--muted); }
.nav-quiet:hover { color: var(--ink); }

/* --- 页头 --- */
.page-head {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(24px, 3.4vw, 52px) var(--gutter) clamp(28px, 3.4vw, 44px);
}
.page-head h1 {
  margin: 0;
  /* 子页面的标题要撑住首屏：跟首页同一个 display 档，不是正文放大一号 */
  font-size: clamp(2.5rem, 1.5rem + 3.6vw, 4.25rem);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.045em;
  max-width: 14em;
}
.page-sub {
  margin: clamp(14px, 1.8vw, 20px) 0 0;
  font-size: var(--t-lead);
  line-height: 1.55;
  color: var(--ink);
  max-width: 30em;
}

/* --- 类型切换 --- */
.kind-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-top: clamp(24px, 3vw, 34px); }
.kind-tabs a {
  padding: 10px 18px;
  font-size: var(--t-sm);
  background: var(--surface);
  color: var(--muted);
  transition: background-color .16s ease, color .16s ease;
}
.kind-tabs a:hover { background: var(--surface-2); color: var(--ink); }
.kind-tabs a[aria-current] { background: var(--deep); color: #eafaf7; }

/* --- 联系页 --- */
.contact-wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: start;
}
@media (max-width: 880px) { .contact-wrap { grid-template-columns: minmax(0, 1fr); } .wechat-card { width: 100%; max-width: 460px; margin-inline: auto; } }

.form { display: grid; gap: 16px; }
.form-intro { margin: 0 0 4px; font-size: var(--t-body); color: var(--ink-soft); line-height: 1.6; }
.form label {
  display: grid; gap: 7px;
  font-size: var(--t-sm); font-weight: 500;
}
.form label span { font-weight: 400; color: var(--muted); font-size: 0.8125rem; }
.form input, .form textarea {
  font: inherit;
  font-size: var(--t-body);
  color: var(--ink);
  background: var(--surface);
  border: 0;
  border-radius: var(--r);
  padding: 13px 15px;
  line-height: 1.5;
  width: 100%;
}
.form input::placeholder, .form textarea::placeholder { color: var(--muted); }
.form textarea { resize: vertical; min-height: 120px; }
.form input:focus-visible, .form textarea:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.form .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 620px) { .form .row2 { grid-template-columns: 1fr; } }
.honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; /* taste-skill-ignore hairline — 反垃圾隐藏字段，永不绘制 */ opacity: 0; }
.form-note { margin: 0; font-size: var(--t-sm); color: var(--muted); line-height: 1.6; }
.form-status { margin: 0; font-size: var(--t-sm); line-height: 1.6; min-height: 1.6em; color: var(--ink-soft); }
.btn-block { width: 100%; }
.btn-quiet {
  background: var(--surface);
  color: var(--ink);
  transition: background-color .16s ease;
}
.btn-quiet:hover { background: var(--surface-2); }
.btn-quiet:disabled { opacity: .45; cursor: not-allowed; }

/* --- 微信卡 --- */
.wechat-card {
  background: var(--surface);
  padding: clamp(22px, 2.6vw, 30px);
  display: grid;
  gap: 0;
  justify-items: center;
  text-align: center;
}
.wechat-card img { display: block; width: 100%; max-width: 224px; height: auto; aspect-ratio: 1; object-fit: cover; border-radius: 16px; box-shadow: 0 18px 45px #0000004d; }
.wechat-card h2 { margin: 24px 0 8px; font-size: 1.3rem; font-weight: 500; letter-spacing: -0.02em; }
.wechat-card p { margin: 0; font-size: var(--t-sm); line-height: 1.7; color: var(--ink-soft); max-width: 24em; text-wrap: balance; }
.wechat-id { font-weight: 600; color: var(--ink); font-size: 1rem; }
.wechat-tel a:hover { text-decoration: underline; }
.wechat-hours { color: var(--muted); }

/* --- 名额统计 --- */
.stat-band {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
}
.stat {
  background: var(--surface);
  padding: 20px 22px;
  display: grid;
  gap: 6px;
  align-content: start;
  min-height: 104px;
}
.stat-k { font-size: var(--t-sm); color: var(--muted); }
.stat-v {
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
}
.stat-pending { font-size: var(--t-sm); font-weight: 400; color: var(--muted); letter-spacing: 0; }
.stat-note {
  max-width: var(--max);
  margin: 14px auto 0;
  padding: 0 var(--gutter);
  font-size: var(--t-sm);
  color: var(--muted);
  line-height: 1.6;
}
@media (max-width: 820px) { .stat-band { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .stat-band { grid-template-columns: 1fr; } }

/* --- 三条路 --- */
.paths { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-top: clamp(24px, 3vw, 34px); }
.path { background: var(--surface); padding: 24px 22px; display: grid; gap: 10px; align-content: start; }
.path h3 { margin: 0; font-size: var(--t-lead); font-weight: 500; letter-spacing: -0.02em; }
.path p { margin: 0; font-size: var(--t-body); line-height: 1.55; color: var(--ink-soft); max-width: 24em; }
.path .btn { justify-self: start; margin-top: 6px; }
.path-link { font-size: var(--t-sm); color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.path-note { font-size: var(--t-sm); color: var(--muted); }
@media (max-width: 820px) { .paths { grid-template-columns: minmax(0, 1fr); } }

/* --- 邀请页的微信 --- */
.invite-wechat {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(28px, 4vw, 64px);
  align-items: center;
}
.invite-wx { margin: 20px 0 0; font-size: var(--t-body); color: var(--ink-soft); }
.invite-wx b { color: var(--ink); font-weight: 600; }
.invite-wx a:hover { text-decoration: underline; }
.invite-hours { margin: 8px 0 0; font-size: var(--t-sm); color: var(--muted); }
.qr-figure { margin: 0; display: grid; gap: 10px; justify-items: center; }
.qr-figure img { display: block; width: 220px; height: 220px; object-fit: cover; border-radius: 6px; background: #fff; }
.qr-figure figcaption { font-size: var(--t-sm); color: var(--muted); }
@media (max-width: 720px) { .invite-wechat { grid-template-columns: minmax(0, 1fr); } }

/* --- 案例 --- */
.case-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-top: clamp(20px, 2.6vw, 30px); }
.case-card { background: var(--surface); display: grid; align-content: start; }
.case-shot {
  aspect-ratio: 16 / 10;
  display: grid;
  place-items: center;
  background: var(--surface-2);
  color: var(--muted);
  font-size: var(--t-sm);
  text-align: center;
  padding: 12px;
}
.case-body { padding: 18px 20px 20px; display: grid; gap: 8px; }
.case-body h2 { margin: 0; font-size: var(--t-lead); font-weight: 500; letter-spacing: -0.02em; line-height: 1.3; }
.case-meta { margin: 0; font-size: var(--t-sm); color: var(--muted); }
@media (max-width: 820px) { .case-grid { grid-template-columns: minmax(0, 1fr); } }

.empty-state {
  margin-top: clamp(20px, 2.6vw, 30px);
  background: var(--surface);
  padding: clamp(28px, 4vw, 44px);
  display: grid;
  gap: 10px;
  justify-items: start;
}
.empty-state p { margin: 0; font-size: var(--t-body); color: var(--ink-soft); line-height: 1.6; max-width: 34em; }
.empty-state p b { color: var(--ink); }

.fineprint { margin: 14px 0 0; font-size: var(--t-sm); color: var(--muted); line-height: 1.65; max-width: 44em; }
.fineprint a { text-decoration: underline; text-underline-offset: 3px; }

/* --- 下载 --- */
.dl-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.dl-card { background: var(--surface); padding: 26px 24px; display: grid; gap: 10px; align-content: start; }
.dl-os { font-size: var(--t-sm); color: var(--muted); }
.dl-card h2 { margin: 0; font-size: 1.5rem; font-weight: 500; letter-spacing: -0.03em; }
.dl-card p { margin: 0; font-size: var(--t-body); line-height: 1.6; color: var(--ink-soft); }
.dl-pending {
  justify-self: start;
  margin-top: 6px;
  font-size: var(--t-sm);
  color: var(--muted);
  background: var(--surface-2);
  padding: 7px 12px;
}
@media (max-width: 720px) { .dl-grid { grid-template-columns: minmax(0, 1fr); } }

.try-lines { display: flex; flex-wrap: wrap; gap: 8px; margin: clamp(20px, 2.6vw, 28px) 0 0; padding: 0; list-style: none; }
.try-lines li {
  background: var(--surface);
  color: var(--ink);
  padding: 9px 16px;
  font-size: var(--t-sm);
}
.try-lines li::before { content: "对我说："; color: var(--muted); }

/* --- FAQ 页 --- */
.faq-page { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.5fr); gap: clamp(24px, 3.4vw, 48px); align-items: start; }
.faq-wechat { position: sticky; top: 96px; }
@media (max-width: 900px) { .faq-page { grid-template-columns: minmax(0, 1fr); } .faq-wechat { position: static; } }

/* --- 收起/展开以后要收拢 --- */
.next-cta {
  background: var(--surface);
  padding: clamp(24px, 3.4vw, 40px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.next-cta h2 { margin: 0 0 6px; font-size: clamp(1.25rem, 2vw, 1.625rem); font-weight: 500; letter-spacing: -0.03em; }
.next-cta p { margin: 0; font-size: var(--t-body); color: var(--ink-soft); }
.next-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* --- 账号页 --- */
.acct {
  max-width: var(--max);
  margin: var(--gap) auto 0;
  padding: 0 var(--gutter);
}
.acct + .acct { margin-top: clamp(40px, 5vw, 64px); }
.acct h2 { margin: 0 0 10px; font-size: var(--t-h); font-weight: 500; letter-spacing: -0.04em; line-height: 1.16; }
.acct-note { margin: 0 0 14px; font-size: var(--t-body); line-height: 1.6; color: var(--ink-soft); max-width: 40em; }
.acct-pending {
  margin: 12px 0 0;
  font-size: var(--t-sm);
  line-height: 1.6;
  color: var(--muted);
  max-width: 44em;
  padding-left: 12px;
  border-left: 3px solid var(--surface-2);
}

.key-row, .link-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  background: var(--surface);
  padding: 12px 14px;
}
.key-value, .link-value {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; /* taste-skill-ignore mono — 这是一串要照抄的 Key 和一条网址，本来就在 <code> 里 */
  font-size: 0.9375rem;
  color: var(--ink);
  word-break: break-all;
  flex: 1 1 16em;
  min-width: 0;
}

.quota-row { display: flex; gap: clamp(28px, 4vw, 64px); flex-wrap: wrap; margin: 6px 0 16px; }
.quota { display: grid; gap: 4px; }
.quota-v { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 500; letter-spacing: -0.035em; font-variant-numeric: tabular-nums; line-height: 1.1; }
.quota-k { font-size: var(--t-sm); color: var(--muted); }

.share-wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(20px, 3vw, 40px); align-items: start; }
@media (max-width: 820px) { .share-wrap { grid-template-columns: minmax(0, 1fr); } }
.share-form { display: grid; gap: 10px; }
.share-form label { font-size: var(--t-sm); font-weight: 500; }
.share-form textarea {
  font: inherit;
  font-size: var(--t-body);
  line-height: 1.6;
  color: var(--ink);
  background: var(--surface);
  border: 0;
  border-radius: var(--r);
  padding: 14px 16px;
  resize: vertical;
  width: 100%;
}
.share-count { margin: 0; font-size: 0.8125rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.share-form .btn { justify-self: start; }

.share-card {
  margin: 0;
  background: var(--scr);
  color: var(--scr-ink);
  padding: clamp(22px, 3vw, 30px);
  display: grid;
  gap: 20px;
  align-content: space-between;
  min-height: 240px;
  border-radius: 8px;
}
.share-card blockquote { margin: 0; font-size: 1.0625rem; line-height: 1.6; }
.share-card figcaption { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; }
.share-card figcaption > span:first-child { font-size: 0.75rem; color: var(--scr-muted); }
.share-qr {
  display: grid;
  place-items: center;
  width: 76px;
  height: 76px;
  border: 1px dashed rgba(255,255,255,0.28);
  border-radius: 6px;
  font-size: 0.625rem;
  color: var(--scr-muted);
  text-align: center;
  line-height: 1.3;
}
.share-qr small { display: block; opacity: .7; }


.tile-wx-link {
  display: inline-block;
  margin-top: 12px;
  font-size: var(--t-sm);
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.tile-wx-link:hover { color: var(--muted); }

/* ===================================================================
   子页面第二轮修正
   1) 页头右侧不再空着：标题左边，说明和动作右边
   2) 每节的右边缘收在页面上，不再一半空
   3) 正文用全墨色
   =================================================================== */

/* --- 页头：左边是标题组，右边是一块卡。用 flex 换行，窄屏不会互相压住 --- */
.page-head {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(24px, 4vw, 64px);
  align-items: flex-start;
  justify-content: space-between;
}
.page-head > h1 { flex: 1 1 22em; margin: 0; }
.page-head .page-sub { flex: 1 1 22em; margin: clamp(14px, 1.8vw, 20px) 0 0; }
.page-head .kind-tabs { flex: 1 1 100%; margin-top: clamp(10px, 1.4vw, 16px); }
.page-head .head-aside {
  flex: 0 1 26em;
  display: grid;
  gap: 8px;
  align-content: start;
  justify-items: start;
  background: var(--surface);
  padding: clamp(20px, 2.4vw, 28px);
  box-sizing: border-box;
}
.head-aside .ha-k { font-size: var(--t-sm); color: var(--muted); }
.head-aside .ha-v { font-size: var(--t-lead); font-weight: 500; letter-spacing: -0.02em; }
.head-aside .btn { margin-top: 10px; }
.head-aside .ha-qr {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  margin-top: 10px;
  border-radius: 6px;
  background: #fff;
}
@media (max-width: 860px) {
  .page-head .head-aside { flex: 1 1 100%; margin-top: 20px; }
}

/* --- 账号页：说明用全墨，演示标记也别降到读不清 --- */
.acct-note { color: var(--ink); font-size: var(--t-body); }
.acct-pending {
  border-left: 0;
  padding: 12px 0 0;
  margin: 12px 0 0;
  color: var(--ink-soft);
  font-size: var(--t-body);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}
@media (max-width: 860px) { .split { grid-template-columns: minmax(0, 1fr); } }

/* --- 装完自检清单 --- */
.checklist {
  background: var(--surface);
  padding: clamp(20px, 2.6vw, 28px);
  align-self: start;
}
.checklist h3 {
  margin: 0 0 14px;
  font-size: var(--t-lead);
  font-weight: 500;
  letter-spacing: -0.02em;
}
.checklist ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 11px;
}
.checklist li {
  position: relative;
  padding-left: 26px;
  font-size: var(--t-body);
  line-height: 1.5;
  color: var(--ink);
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 12px;
  height: 12px;
  background: var(--deep);
}
.checklist-note {
  margin: 16px 0 0;
  font-size: var(--t-sm);
  line-height: 1.6;
  color: var(--muted);
}

/* 演示/未开通说明：是正文的一部分，不是标题上面的小标签 */
.acct-demo {
  margin-top: 14px;
  padding-top: 0;
  color: var(--ink-soft);
}

/* --- 页面中段的实拍横幅：跟着页面栅格走，不做全出血 --- */
.band {
  position: relative;
  max-width: var(--max);
  margin: var(--gap) auto 0;
  padding: 0 var(--gutter);
  box-sizing: border-box;
}
.band img,
.band::after {
  /* 放在内边距以内，右边缘与正文对齐 */
}
.band img {
  display: block;
  width: 100%;
  height: clamp(240px, 34vw, 420px);
  object-fit: cover;
}
.band img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.82;
}
.band::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 55%;
  background: rgba(8, 10, 12, 0.72);
}
.band figcaption {
  position: absolute;
  left: var(--gutter);
  right: var(--gutter);
  bottom: clamp(20px, 3vw, 36px);
  z-index: 1;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: var(--t-lead);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: #fff;
}
.band figcaption span {
  font-size: var(--t-sm);
  font-weight: 400;
  letter-spacing: 0;
  color: rgba(255, 255, 255, 0.65);
}

/* 导航右侧：登录入口 + 主行动 */
.nav-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 20px);
}
.nav-right .btn { margin-left: 0; }

/* 命令表：选中行黑底，名字用冷青 */
.cmd.is-on .cmd-row { background: var(--scr); }
.cmd.is-on .cmd-name { color: var(--cold); }
.cmd.is-on .cmd-say { color: var(--scr-ink); }

/* FAQ 页去掉页头后，直接从列表开始，但要有呼吸的上边距 */
.faq-page { margin-top: clamp(40px, 6vw, 72px); padding: 0 var(--gutter); max-width: var(--max); margin-left: auto; margin-right: auto; }

/* --- 关于页：左边是人、名字、联系方式，右边一块深色一块浅色 --- */
.about-head {
  display: flex;
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
  justify-content: space-between;
}
.about-lead { flex: 1 1 30em; min-width: 0; }
.about-head .page-sub { max-width: 30em; font-size: var(--t-lead); }
.about-ghost {
  flex: none;
  display: block;
  width: clamp(180px, 22vw, 300px);
  height: auto;
}
@media (max-width: 900px) {
  .about-head { flex-direction: column-reverse; align-items: flex-start; }
  .about-ghost { width: clamp(140px, 34vw, 200px); }
}
.about-body {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(28px, 4.6vw, 64px);
  align-items: start;
}
.about-h { margin-top: clamp(40px, 5vw, 64px); }
.about-p {
  margin: clamp(12px, 1.6vw, 16px) 0 0;
  font-size: var(--t-body);
  line-height: 1.65;
  color: var(--ink-soft);
  max-width: 30em;
}
.crew {
  list-style: none;
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  padding: 0;
  display: flex; flex-wrap: wrap; gap: 6px;
}
.crew li {
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface-2);
  font-size: var(--t-body);
  color: var(--ink-soft);
}
.about-kv { margin: clamp(14px, 1.8vw, 20px) 0 0; display: grid; gap: 10px; }
.about-kv div { display: flex; gap: 16px; flex-wrap: wrap; font-size: var(--t-body); }
.about-kv dt { color: var(--muted); min-width: 8em; }
.about-kv dd { margin: 0; color: var(--ink); }
.about-kv a { text-decoration: underline; text-underline-offset: 3px; }
.about-kv .kv-go { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; font-weight: 500; color: var(--deep); }
.about-kv .kv-go span { transition: transform .16s ease; }
.about-kv .kv-go:hover span { transform: translateX(4px); }

.about-side { display: grid; gap: 8px; position: sticky; top: 96px; }
.about-panel { background: var(--surface); padding: clamp(24px, 3vw, 34px); }
.about-panel-ink { background: var(--scr); color: var(--scr-ink); }
.panel-title { margin: 0; font-size: var(--t-lead); font-weight: 500; letter-spacing: -0.02em; }
.panel-p { margin: 14px 0 0; font-size: var(--t-body); line-height: 1.65; color: var(--ink-soft); }
.about-panel-ink .panel-p { color: #cbcbd2; }
.about-panel .btn { margin-top: clamp(20px, 2.6vw, 28px); }
.panel-small { margin: 18px 0 0; font-size: var(--t-sm); color: var(--scr-muted); }
/* 右侧那块接一条横向的大链接，和首页页脚同一个形状：左边字，右边箭头 */
.about-line {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  background: var(--surface-2);
  padding: 22px clamp(24px, 3vw, 34px);
  font-size: var(--t-lead); font-weight: 500; letter-spacing: -0.03em;
  transition: background-color .16s ease;
}
.about-line:hover { background: var(--surface); }
.about-line:hover .go-arrow { transform: translateX(6px); }

@media (max-width: 900px) {
  .about-body { grid-template-columns: minmax(0, 1fr); }
  .about-side { position: static; }
}

/* 子页面去掉右侧卡之后：页头收紧，标题和说明紧随其后，不留大空洞 */
.page-head { padding-bottom: clamp(20px, 2.6vw, 32px); }
.page-head > h1 { flex: 1 1 100%; }
.page-head .page-sub { flex: 1 1 100%; max-width: 38em; }
.page-head .kind-tabs { margin-top: clamp(18px, 2.2vw, 26px); }

/* ===================================================================
   账号页：从「一堆段落」改成「一眼能扫的状态板」
   状态用色块和标签表达，说明压成键值对，不再成段。
   =================================================================== */

.acct-hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(24px, 3.4vw, 48px) var(--gutter) 0;
}
.acct-id { display: flex; align-items: center; gap: 16px; }
.acct-avatar {
  width: 56px; height: 56px; border-radius: 50%; flex: none;
  background: var(--deep);
  position: relative;
}
.acct-avatar::after {
  content: "";
  position: absolute; left: 50%; top: 50%;
  width: 14px; height: 14px; margin: -7px 0 0 -7px;
  border-radius: 50%; background: var(--cold);
}
.acct-id h1 {
  margin: 0;
  font-size: clamp(1.875rem, 1.4rem + 2vw, 2.75rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.1;
}
.acct-mail { margin: 4px 0 0; font-size: var(--t-sm); color: var(--muted); }

/* 三块状态：数字大、标签小，颜色直接说状态 */
.acct-stats {
  margin-top: clamp(24px, 3vw, 36px);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}
.astat {
  background: var(--surface);
  padding: clamp(18px, 2.4vw, 26px);
  display: grid;
  gap: 4px;
  align-content: start;
}
.astat-ok { background: var(--cold); }
.astat-k { font-size: var(--t-sm); color: var(--muted); }
.astat-ok .astat-k { color: var(--deep); }
.astat-v {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
}
.astat-v small { font-size: 0.5em; font-weight: 400; opacity: 0.55; }
.astat-note { font-size: var(--t-sm); color: var(--muted); }
.astat-ok .astat-note { color: var(--deep); opacity: 0.75; }
@media (max-width: 720px) { .acct-stats { grid-template-columns: minmax(0, 1fr); } }

/* 卡片网格：两列，深浅交错，不让整页一个颜色 */
.acct-grid {
  max-width: var(--max);
  margin: clamp(24px, 3vw, 36px) auto 0;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
@media (max-width: 860px) { .acct-grid { grid-template-columns: minmax(0, 1fr); } }

.acard {
  background: var(--surface);
  padding: clamp(20px, 2.6vw, 30px);
  display: grid;
  gap: 16px;
  align-content: start;
}
.acard-ink { background: var(--scr); color: var(--scr-ink); }
.acard-ink .acard-note { color: var(--scr-muted); }
.acard-ink .apairs span { color: var(--scr-muted); }
.acard-ink .apairs b { color: var(--scr-ink); }

.acard-head {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: space-between;
}
.acard-head h2 {
  margin: 0;
  font-size: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  font-weight: 500;
  letter-spacing: -0.025em;
}
.acard-head .acard-link {
  margin-left: auto;
  font-size: var(--t-sm);
  color: var(--cold);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color .16s ease;
}
.acard-head .acard-link:hover { color: var(--scr-ink); }
.atag {
  flex: none;
  font-size: 0.75rem;
  padding: 4px 10px;
  background: var(--surface-2);
  color: var(--muted);
}
.atag-ok { background: var(--cold); color: var(--deep); }
.atag-pending { background: var(--surface-2); color: var(--muted); }
.acard-ink .atag { background: rgba(255,255,255,0.12); color: var(--cold); }

/* 键值对：左标签右值，一行一件事 */
.apairs { list-style: none; margin: 0; padding: 0; display: grid; gap: 1px; }
.apairs li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 0;
  border-bottom: 0;
  font-size: var(--t-sm);
}
.apairs li + li { background: none; }
.apairs span { color: var(--muted); flex: none; }
.apairs b { font-weight: 500; text-align: right; }

.acard-note {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--muted);
}

/* 深色卡里的按钮和输入 */
.btn-on-ink {
  background: rgba(255, 255, 255, 0.14);
  color: var(--scr-ink);
}
.btn-on-ink:hover { background: rgba(255, 255, 255, 0.24); }
.acard-ink .key-value { color: var(--scr-ink); }

/* 分享卡：横跨整行 */
.acct-share {
  max-width: var(--max);
  margin: 8px auto 0;
  padding: clamp(20px, 2.6vw, 30px) var(--gutter);
  background: var(--surface);
  display: grid;
  gap: 18px;
  box-sizing: border-box;
}
.acct-share > .acard-head { padding: 0; }
@media (min-width: 861px) {
  .acct-share {
    width: calc(100% - var(--gutter) * 2);
    padding: clamp(20px, 2.6vw, 30px);
  }
}

/* ===================================================================
   下载页：先给结论，再给细节。步骤横排，平台用状态标签，权限并排。
   =================================================================== */

.dl-steps {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}
.dstep {
  background: var(--surface);
  padding: clamp(20px, 2.6vw, 28px);
  display: grid;
  gap: 6px;
  align-content: start;
}
.dstep-n {
  width: 28px; height: 28px;
  display: grid; place-items: center;
  background: var(--deep);
  color: var(--cold);
  font-size: 0.875rem; font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.dstep h2 {
  margin: 8px 0 0;
  font-size: var(--t-lead);
  font-weight: 500;
  letter-spacing: -0.02em;
}
.dstep p { margin: 0; font-size: var(--t-sm); color: var(--muted); line-height: 1.5; }
@media (max-width: 760px) { .dl-steps { grid-template-columns: minmax(0, 1fr); } }

.dl-grid-wrap {
  max-width: var(--max);
  margin: 8px auto 0;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
@media (max-width: 760px) { .dl-grid-wrap { grid-template-columns: minmax(0, 1fr); } }

.dl-panel {
  background: var(--surface);
  padding: clamp(20px, 2.6vw, 30px);
  display: grid;
  gap: 14px;
  align-content: start;
}
.dl-panel-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.dl-panel-head h2 {
  margin: 0;
  font-size: clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
  font-weight: 500;
  letter-spacing: -0.03em;
}
.dl-panel-what { margin: 0; font-size: var(--t-body); color: var(--ink-soft); }

.dl-footnote {
  max-width: var(--max);
  margin: 12px auto 0;
  padding: 0 var(--gutter);
  font-size: var(--t-sm);
  color: var(--muted);
}

/* 权限：三块并排，用色块代表开/不开 */
.perm-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: clamp(20px, 2.6vw, 30px);
}
@media (max-width: 760px) { .perm-grid { grid-template-columns: minmax(0, 1fr); } }
.perm {
  background: var(--surface);
  padding: clamp(18px, 2.4vw, 26px);
  display: grid;
  gap: 8px;
  align-content: start;
}
.perm-icon {
  width: 34px; height: 34px;
  background: var(--cold);
  position: relative;
}
.perm-icon::after {
  content: "";
  position: absolute; inset: 9px;
  background: var(--deep);
}
.perm h3 { margin: 4px 0 0; font-size: var(--t-body); font-weight: 500; letter-spacing: -0.02em; }
.perm p { margin: 0; font-size: var(--t-sm); line-height: 1.55; color: var(--muted); }
.perm p b { color: var(--ink); font-weight: 500; }

/* 深色卡里的 Key 行：底色要跟着卡片走，不能是浅灰白条 */
.acard-ink .key-row { background: rgba(255, 255, 255, 0.07); }
.acard-ink .key-value { color: var(--cold); }
.acard-ink .btn-on-ink { background: rgba(255,255,255,.16); color: var(--scr-ink); }
.acard-ink .btn-on-ink:hover { background: rgba(255,255,255,.28); }

/* 关于页：页头不收下面的留白，正文自己带着上边距，避免中间空出一大块 */
.about-head { padding-bottom: 0; }
.about-head + .about-body { padding-top: clamp(40px, 5vw, 72px); }
/* 2026-11-01：保留 D2 配色、字体和间距，恢复产品规格要求的叙述顺序。 */
[hidden] { display:none !important; }
button,input,textarea,select { font:inherit; }
button:disabled { cursor:not-allowed; opacity:.5; }
.narrative,.scene { scroll-margin-top:var(--nav-h); }
.spec-hero { display:grid; grid-template-columns:1.15fr 1fr; grid-template-areas:"copy art"; gap:35px; align-items:center; padding-top:65px; padding-bottom:75px; min-height:calc(100svh - var(--nav-h)); }
.spec-hero h1 { font-size:clamp(32px,4.2vw,58px); line-height:1.22; letter-spacing:-.045em; margin:22px 0; }
.spec-hero .hero-copy { grid-area:copy; }
.hero-art { grid-area:art; position:relative; min-width:0; }
.hero-art>img { width:100%; height:auto; display:block; }
.hero-caption { padding:18px 22px; font-size:14px; }
.hero-caption small { display:block; color:var(--scr-muted); margin-top:8px; font-size:11px; }
.preview { display:inline-block; padding:5px 10px; border:1px solid var(--surface-2); font-size:12px; color:var(--muted); }
.first-open { margin-top:38px; border-top:1px solid var(--surface-2); padding-top:17px; font-size:14px; color:var(--muted); max-width:36em; }
.first-open b { color:var(--ink); font-weight:500; }
.first-open p { margin:6px 0 0; }
.scene { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:clamp(30px,5vw,70px); align-items:center; }
/* 窄屏下允许场景内容在所属网格内收缩，避免撑破页面。 */
.scene > * { min-width:0; }
.scene .sec-head { margin-bottom:24px; }
.scene p { color:var(--muted); max-width:34em; }
.scene-label { font-size:13px; color:var(--muted); margin:0 0 22px; }
.evidence { margin:0; width:100%; min-width:0; background:var(--scr); color:var(--scr-ink); min-height:260px; aspect-ratio:var(--ratio,16 / 10); display:flex; flex-direction:column; align-items:center; justify-content:center; padding:30px; text-align:center; border-radius:8px; }
.evidence .slot-mark { color:var(--cold); font-size:32px; font-weight:300; margin-bottom:16px; }
.evidence strong { font-size:18px; font-weight:500; }
.evidence p { color:var(--scr-muted); font-size:13px; max-width:30em; margin:14px auto; }
.evidence small { color:var(--scr-muted); font-size:11px; }
.verb-line { display:flex; gap:12px; margin:26px 0; }
.verb-line span { background:var(--surface); padding:9px 17px; font-size:14px; }
.scene-note { border-left:2px solid var(--ink); padding-left:16px; font-size:14px; margin-top:28px; }
.narrative>.sec-say { max-width:36em; color:var(--muted); margin-bottom:36px; }
.difference { display:grid; grid-template-columns:1fr 1fr; gap:28px; }
.difference>article { min-width:0; }
.difference>article>p:last-child { font-size:14px; color:var(--muted); }
.input-scene,.selection-scene { padding:26px; min-height:285px; }
.input-scene>p,.selection-scene>p { font-size:13px; color:var(--scr-muted); }
.faux-input { border:1px solid #44444b; padding:20px; margin-top:35px; font-size:14px; color:var(--scr-muted); }
.faux-input span { font-size:12px; }
.selection-scene mark { background:#7fe3ef2b; color:var(--scr-ink); padding:5px 2px; line-height:2.3; }
.voice-bubble { background:var(--scr-3); padding:14px 18px; color:var(--cold); font-size:17px; margin-top:35px; width:fit-content; }
.trust-section { background:var(--scr); color:var(--scr-ink); border-radius:8px; padding:45px; max-width:calc(var(--max) - 2 * var(--gutter)); }
.trust-section>.sec-say,.trust-section .fineprint { color:var(--scr-muted); }
.trust-section .facts dt { color:var(--scr-ink); }
.trust-section .facts dd { color:var(--scr-muted); }
.hardware-pair { display:grid; grid-template-columns:1fr 1fr; gap:45px; margin:45px 0; }
.hardware-pair article { border-top:1px solid var(--surface-2); padding-top:22px; }
.hardware-pair h3 { font-size:26px; font-weight:500; }
.hardware-pair p { color:var(--muted); max-width:25em; }
.hub-traits { max-width:800px; }
.opening { margin-top:65px; }
.opening h3 { font-size:24px; font-weight:500; }
.try-say { display:flex; gap:10px; flex-wrap:wrap; margin-top:24px; }
.try-say span { font-size:14px; padding:8px 13px; border:1px solid var(--surface-2); }
.narrative>.dl-steps { padding:0; margin:35px 0; }
.empty-evidence { background:var(--surface); padding:50px 35px; margin-bottom:30px; }
.empty-evidence small { color:var(--muted); }
.invite-explain { display:flex; gap:50px; flex-wrap:wrap; margin:35px 0; }
.invite-explain>div { display:flex; flex-direction:column; gap:7px; }
.invite-explain strong { font-size:55px; line-height:1.1; font-weight:500; }
.invite-explain small { font-size:22px; }
.invite-explain span { font-size:14px; color:var(--muted); }
.release-panel { max-width:calc(var(--max) - 2 * var(--gutter)); margin:0 auto; background:var(--scr); color:var(--scr-ink); border-radius:8px; padding:45px; display:flex; align-items:center; justify-content:space-between; gap:25px; }
.release-panel>div>p:first-child { font-size:14px; color:var(--scr-muted); }
.release-panel h2 { font-size:26px; font-weight:500; }
.countdown { font-size:clamp(35px,6vw,68px); letter-spacing:.02em; margin:15px 0; font-variant-numeric:tabular-nums; }
.release-note { color:var(--scr-muted); font-size:13px; }
.paths h2 { font-size:23px; font-weight:500; }
.auth-wrap { max-width:580px; margin:0 auto 100px; padding:0 24px; }
.auth-wrap .form { width:100%; }
.otp-row { display:flex; align-items:end; gap:12px; }
.otp-row label { flex:1; min-width:0; }
.otp-row button { margin-bottom:24px; flex:none; padding-inline:16px; }
.key-once { padding:32px; }
.key-once h2 { font-size:27px; font-weight:500; }
.key-once p { color:var(--scr-muted); font-size:14px; }
.key-once code,#rotated-secret { display:block; word-break:break-all; padding:20px 0; color:var(--cold); font-size:17px; }
.acct-grid { grid-template-columns:1fr 1fr; }
.invite-list { border-top:1px solid var(--surface-2); margin-top:30px; }
.invite-code-row { display:flex; align-items:center; gap:20px; padding:20px 0; border-bottom:1px solid var(--surface-2); }
.invite-code-row code { flex:1; font-size:16px; word-break:break-all; }
.invite-code-row span { color:var(--muted); font-size:13px; }
.memory-note { margin-bottom:50px; border-top:1px solid var(--surface-2); padding-top:18px; }
.memory-note p { color:var(--muted); font-size:14px; }
.modal { max-width:560px; width:calc(100% - 32px); max-height:90svh; border:0; padding:35px; background:var(--bg); color:var(--ink); overflow:auto; }
.modal::backdrop { background:#10101099; }
.modal-close { float:right; border:0; background:transparent; font-size:25px; cursor:pointer; padding:4px 9px; }
.modal h2 { font-size:28px; font-weight:500; margin-top:8px; }
.modal .form { width:100%; }
.form-status:empty { display:none; }
.form-status { font-size:14px; }
.fineprint a { text-decoration:underline; }
@media(max-width:900px) { .spec-hero { grid-template-columns:1fr; grid-template-areas:"copy" "art"; padding-top:35px; min-height:0; } .hero-art { max-width:500px; width:100%; margin:auto; } .scene { gap:30px; } .scene .sec-head { font-size:28px; } }
@media(max-width:650px) { .scene,.difference,.hardware-pair,.acct-grid { grid-template-columns:minmax(0,1fr); } .scene-mirror .evidence { order:2; } .scene>.evidence { min-height:230px; } .spec-hero .hero-actions { gap:18px; } .hero-art { max-width:340px; } .spec-hero h1 { font-size:37px; } .release-panel { margin:0 20px; flex-direction:column; align-items:start; padding:28px; } .trust-section { margin-inline:20px; padding:28px; } .evidence { padding:24px; } .hardware-pair { gap:20px; } .invite-code-row { flex-wrap:wrap; gap:12px; } .invite-code-row code { flex-basis:100%; } .invite-explain { gap:30px; } .modal { padding:24px; } .otp-row button { font-size:13px; padding:12px; } }

.release-panel,.trust-section { width:calc(100% - 2 * var(--gutter)); }
@media(max-width:650px) { .release-panel,.trust-section { width:calc(100% - 40px); } }

.personal-invite { display:flex; justify-content:space-between; gap:30px; align-items:center; padding-top:25px; }
.personal-invite code { display:block; max-width:42em; word-break:break-all; font-size:15px; }
.personal-invite img { flex:none; background:white; }
@media(max-width:650px) { .personal-invite { align-items:start; flex-direction:column; } }

/* 独立常见问题页使用完整内容列，不沿用首页侧边标题布局。 */
.faq-full { display:block; }
.faq-group + .faq-group { margin-top:64px; }
.faq-group-title { margin:0 0 22px; font-size:1.125rem; font-weight:500; color:var(--muted); }
.faq-full .faq-list { width:100%; }
.faq-full .faq-list summary { padding:26px 30px; }
.faq-full .faq-list p { max-width:48em; padding:0 30px 20px; line-height:1.85; }
.faq-full .faq-list strong { font-weight:600; }
.faq-full .faq-list .faq-note { font-size:var(--t-sm); opacity:.76; }
.faq-full .faq-list a,.faq-inline-action { text-decoration:underline; text-underline-offset:4px; }
.faq-inline-action { border:0; padding:0; background:transparent; color:inherit; font:inherit; cursor:pointer; }
.faq-contact { margin-top:64px; }
@media(max-width:650px) {
  .faq-full .faq-list summary { padding:22px 20px; gap:16px; }
  .faq-full .faq-list p { padding:0 20px 20px; }
  .faq-group + .faq-group { margin-top:44px; }
}