/* 装修超人 · 官网
   形状体系：全站胶囊。按钮、标签、输入、胶囊卡 = 999px；内容卡片 = 20px；图片位 = 20px。
   颜色：纸白底 + 墨黑 + 单一朱红重音。零外部请求。 */

:root {
  --paper: #F1F1ED;
  --tint: #EAEAE4;
  --card: #FAFAF7;
  --ink: #15181A;
  --ink-2: #4E5457;
  --ink-3: #7A8184;
  --line: #D9DBD4;
  --line-2: #C3C6BE;
  --accent: #B93B24;
  --accent-2: #96301D;

  --pill: 999px;
  --card-r: 20px;

  --sans: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Consolas, monospace;

  --wrap: 1200px;
  --gap: clamp(20px, 4vw, 32px);
  --sec-y: clamp(72px, 9vw, 128px);
  --ease: cubic-bezier(.2, .7, .3, 1);
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  background: var(--ink); color: #fff; padding: 10px 18px;
  border-radius: var(--pill); font-size: 14px;
  transition: top .2s var(--ease);
}
.skip:focus { top: 12px; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gap);
}

/* ── 导航 ─────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, background .25s ease;
}
.nav.is-scrolled { border-bottom-color: var(--line); }

.nav__inner {
  height: 68px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 650; font-size: 16.5px; letter-spacing: -.01em;
  white-space: nowrap;
}
.brand__mark {
  width: 22px; height: 22px; border-radius: 7px;
  background: var(--ink); position: relative; flex: none;
}
.brand__mark::after {
  content: ""; position: absolute; inset: 6px;
  border: 1.5px solid var(--accent); border-radius: 2px;
}

.nav__links {
  display: flex; align-items: center; gap: 4px;
  margin-left: auto;
}
.nav__links a {
  padding: 8px 14px; border-radius: var(--pill);
  font-size: 14px; color: var(--ink-2);
  transition: background .18s ease, color .18s ease;
  white-space: nowrap;
}
@media (hover: hover) and (pointer: fine) { .nav__links a:hover { background: rgba(21, 24, 26, .06); color: var(--ink); } }
.nav__act { display: flex; align-items: center; gap: 10px; margin-left: 8px; }

.nav__toggle {
  display: none; width: 40px; height: 40px;
  border: 1px solid var(--line-2); border-radius: var(--pill);
  background: transparent; cursor: pointer;
  padding: 0; align-items: center; justify-content: center; gap: 4px;
  flex-direction: column;
}
.nav__toggle span {
  display: block; width: 16px; height: 1.5px; background: var(--ink);
  border-radius: 2px; transition: transform .2s ease, opacity .2s ease;
}
.nav__toggle[aria-expanded="true"] span:first-child { transform: translateY(2.75px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:last-child { transform: translateY(-2.75px) rotate(-45deg); }

/* ── 按钮 ─────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 52px; padding: 0 28px;
  border-radius: var(--pill);
  background: var(--ink); color: #fff;
  border: 1px solid var(--ink);
  font-family: inherit; font-size: 15.5px; font-weight: 600; letter-spacing: .01em;
  white-space: nowrap; cursor: pointer;
  transition: transform .12s var(--ease), background .18s ease, border-color .18s ease;
}
@media (hover: hover) and (pointer: fine) { .btn:hover { background: #000; border-color: #000; } }
.btn:active { transform: translateY(1px); }

.btn--ghost {
  background: transparent; color: var(--ink); border-color: var(--line-2);
  font-weight: 500;
}
@media (hover: hover) and (pointer: fine) { .btn--ghost:hover { background: rgba(21, 24, 26, .05); border-color: var(--ink); } }
.btn--dark { background: #0C0C0C; border-color: #0C0C0C; }

.btn--sm { height: 40px; padding: 0 18px; font-size: 14px; }

.link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14.5px; color: var(--ink-2);
  border-bottom: 1px solid var(--line-2);
  padding-bottom: 2px;
  transition: color .18s ease, border-color .18s ease;
}
@media (hover: hover) and (pointer: fine) { .link:hover { color: var(--ink); border-color: var(--ink); } }
.link--arrow::after { content: "→"; font-family: var(--mono); }

/* ── 小标签 ───────────────────────────── */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  margin: 0 0 18px;
  font-size: 13px; letter-spacing: .04em;
  color: var(--ink-2);
}
.dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); flex: none;
}

.tag {
  display: inline-flex; align-items: center;
  height: 26px; padding: 0 12px;
  border-radius: var(--pill);
  border: 1px solid var(--line-2);
  background: transparent;
  font-size: 12px; color: var(--ink-2);
  white-space: nowrap;
}
.tag--ok { border-color: color-mix(in srgb, var(--accent) 50%, transparent); color: var(--accent); }
.tag--demo { border-style: dashed; color: var(--ink-3); }

/* ── 首屏 ─────────────────────────────── */
.hero {
  position: relative;
  min-height: 100dvh;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-content: center;
  padding: clamp(28px, 4vw, 56px) 0 clamp(56px, 8vw, 96px);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute; inset: -20% -10% auto;
  height: 620px;
  background:
    radial-gradient(46% 52% at 30% 18%, rgba(185, 59, 36, .07), transparent 70%),
    radial-gradient(42% 46% at 74% 6%, rgba(21, 24, 26, .05), transparent 72%);
  pointer-events: none;
}

.hero__in { position: relative; text-align: center; }

.hero__title {
  margin: 0 auto;
  max-width: min(22em, 100%);
  font-size: clamp(1.72rem, 1.05rem + 2.9vw, 3.5rem);
  line-height: 1.22;
  letter-spacing: -.02em;
  font-weight: 700;
  text-wrap: balance;
  overflow-wrap: anywhere;
}
.hero__title > .hero__line { display: block; }

/* 标题里的小卡：三张轮播 */
.hero__card {
  display: inline-flex; vertical-align: middle;
  width: 138px; height: 52px;
  margin: 0 0 0 20px;
  border-radius: var(--pill);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: 0 10px 26px -18px rgba(21, 24, 26, .5);
  overflow: hidden;
  position: relative;
  top: 3px;
  animation: floaty 5s ease-in-out infinite;
}
.hero__card-track {
  display: flex; flex-direction: column;
  width: 100%;
  transition: transform .55s var(--ease);
}
.mini {
  flex: 0 0 52px; height: 52px;
  display: flex; flex-direction: column; justify-content: center;
  padding: 0 14px;
  text-align: left;
}
.mini b { font-size: 12.5px; font-weight: 650; letter-spacing: .01em; line-height: 1.3; }
.mini i {
  font-style: normal; font-size: 10.5px; color: var(--ink-3);
  line-height: 1.3; margin-top: 1px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

@keyframes floaty {
  0%, 100% { transform: translateY(-3px); }
  50% { transform: translateY(3px); }
}

.hero__sub {
  max-width: min(34em, 100%);
  margin: 26px auto 0;
  font-size: clamp(15px, 1.1vw, 17px);
  color: var(--ink-2);
  line-height: 1.8;
  text-wrap: pretty;
}

.hero__actions {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 14px;
  margin-top: 34px;
}

.hero__fade {
  position: absolute; left: 0; right: 0; bottom: 0; height: 120px;
  background: linear-gradient(to bottom, transparent, var(--paper));
  pointer-events: none;
}

/* ── 四句主线：滚动叙事 ───────────────── */
.narr { position: relative; height: 380vh; }
.narr__sticky {
  position: sticky; top: 0;
  height: 100dvh;
  display: grid; place-items: center;
  overflow: hidden;
}
.narr__stage {
  position: relative;
  width: 100%; max-width: var(--wrap);
  padding-inline: var(--gap);
  text-align: center;
}

.narr__lead {
  margin: 0 0 clamp(20px, 4vw, 44px);
  font-size: 13px; letter-spacing: .06em; color: var(--ink-3);
}

.narr__lines {
  list-style: none; margin: 0; padding: 0;
  position: relative;
  min-height: 1.3em;
}
.narr__lines li {
  position: absolute; left: 0; right: 0; top: 0;
  font-size: clamp(2rem, 1.2rem + 4.4vw, 4.4rem);
  line-height: 1.16;
  letter-spacing: -.03em;
  font-weight: 700;
  color: var(--line-2);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .5s var(--ease), transform .5s var(--ease), color .5s ease;
  pointer-events: none;
}
.narr__lines li em {
  font-style: normal;
  color: inherit;
  transition: color .5s ease;
}
.narr__lines li.is-on {
  opacity: 1;
  transform: none;
  color: var(--ink);
}
.narr__lines li.is-on em { color: var(--accent); }
.narr__lines li.is-past { opacity: 0; transform: translateY(-14px); }

/* 方印 */
.seal {
  position: absolute;
  left: 0; top: 50%;
  width: 64px; height: 64px;
  margin-top: -32px;
  color: var(--accent);
  will-change: transform;
  pointer-events: none;
  opacity: .95;
}
.seal svg { width: 100%; height: 100%; }

.narr__meter {
  width: min(240px, 60vw); height: 2px;
  margin: clamp(28px, 5vw, 56px) auto 0;
  background: var(--line);
  border-radius: var(--pill);
  overflow: hidden;
}
.narr__meter i {
  display: block; height: 100%; width: 0%;
  background: var(--accent);
  border-radius: var(--pill);
}

/* ── 通用段落 ─────────────────────────── */
.section { padding: var(--sec-y) 0; }
.section--tint { background: var(--tint); }

.sec { max-width: min(46em, 100%); margin-bottom: clamp(32px, 4vw, 56px); }
.sec--tight { margin-bottom: 24px; }

.sec h2 {
  margin: 0;
  font-size: clamp(1.5rem, 1.05rem + 1.6vw, 2.35rem);
  line-height: 1.32;
  letter-spacing: -.02em;
  font-weight: 700;
  text-wrap: balance;
}
.sec__sub {
  margin: 14px 0 0;
  max-width: min(34em, 100%);
  color: var(--ink-2);
  font-size: 15.5px;
}

/* ── 六个问题 ─────────────────────────── */
.probs {
  list-style: none; margin: 0; padding: 0;
  border-top: 1px solid var(--line);
}
.probs__row {
  display: grid;
  grid-template-columns: 48px minmax(0, 1.02fr) minmax(0, 1.24fr) auto;
  gap: clamp(16px, 2.4vw, 36px);
  align-items: start;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  transition: background .2s ease;
}
@media (hover: hover) and (pointer: fine) { .probs__row:hover { background: rgba(255, 255, 255, .55); } }
.probs__idx {
  font-family: var(--mono); font-size: 12px; color: var(--ink-3);
  padding-top: 5px;
}
.probs__q {
  margin: 0; font-size: 16.5px; font-weight: 600; line-height: 1.6;
  letter-spacing: -.01em;
}
.probs__a {
  margin: 0; font-size: 14.5px; color: var(--ink-2); line-height: 1.72;
}
.probs__row .tag { margin-top: 3px; }

/* ── 左右分栏 ─────────────────────────── */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, .86fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
.split--media { grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr); }
.split--phone { grid-template-columns: minmax(0, 1fr) 340px; align-items: center; }

.split__copy h2 {
  margin: 0 0 16px;
  font-size: clamp(1.5rem, 1.1rem + 1.5vw, 2.15rem);
  line-height: 1.32; letter-spacing: -.02em; font-weight: 700;
}
.split__lede { margin: 0 0 26px; color: var(--ink-2); font-size: 16px; max-width: min(32em, 100%); }
.split__note { margin: 22px 0 0; font-size: 13.5px; color: var(--ink-3); max-width: min(30em, 100%); }

/* 图片位 */
.slot {
  margin: 0;
  border-radius: var(--card-r);
  border: 1px dashed var(--line-2);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, .7), rgba(255, 255, 255, .25));
  aspect-ratio: 4 / 3;
  display: grid; place-items: center;
  padding: 24px;
  position: relative;
  overflow: hidden;
}
.slot::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(21,24,26,.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(21,24,26,.05) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(circle at 50% 50%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 30%, transparent 78%);
}
.slot__inner { position: relative; text-align: center; display: grid; gap: 8px; }
.slot__k { font-size: 13px; color: var(--ink-2); letter-spacing: .04em; }
.slot__d { font-size: 11.5px; color: var(--ink-3); font-family: var(--mono); }

/* ── 步骤（GEO 内联） ─────────────────── */
.steps { list-style: none; margin: 0; padding: 0; }
.steps--inline { display: grid; gap: 14px; margin-bottom: 8px; }
.steps--inline li {
  display: grid; grid-template-columns: 108px 1fr; gap: 14px;
  align-items: baseline;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.steps--inline li:last-child { border-bottom: 0; padding-bottom: 0; }
.steps--inline b { font-size: 14px; font-weight: 650; }
.steps--inline span { font-size: 14px; color: var(--ink-2); }

/* ── 四段演示 ─────────────────────────── */
.demos {
  display: grid;
  grid-template-columns: 268px minmax(0, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--card-r);
  background: var(--card);
  overflow: hidden;
}
.demos__tabs {
  display: flex; flex-direction: column;
  border-right: 1px solid var(--line);
  background: rgba(21, 24, 26, .015);
}
.tab {
  appearance: none; border: 0; background: transparent;
  border-bottom: 1px solid var(--line);
  padding: 20px;
  text-align: left; cursor: pointer;
  font-family: inherit; color: var(--ink);
  display: grid; gap: 3px;
  transition: background .18s ease;
}
.tab:last-child { border-bottom: 0; }
@media (hover: hover) and (pointer: fine) { .tab:hover { background: rgba(21, 24, 26, .04); } }
.tab__k { font-size: 14.5px; font-weight: 650; }
.tab__d { font-size: 12.5px; color: var(--ink-3); }
.tab[aria-selected="true"] { background: var(--paper); box-shadow: inset 3px 0 0 var(--accent); }

@media (min-width: 861px) {
  .demos__tabs .tab {
    flex: 1 1 0;
    align-content: center;
    min-height: 0;
  }
}

.demos__body { padding: clamp(20px, 2.6vw, 32px); min-height: 460px; }
.dpanel[hidden] { display: none; }
.dpanel:focus { outline: none; }

.dpanel__head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.dpanel__title { font-size: 14px; color: var(--ink-2); }

.chat { display: grid; gap: 12px; }
.msg {
  max-width: min(100%, 560px);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 13px 16px;
}
.msg--ai { border-left: 3px solid var(--accent); background: var(--paper); }
.msg--sys { border-style: dashed; background: transparent; }
.msg__who {
  display: block; margin-bottom: 5px;
  font-size: 11px; letter-spacing: .06em; color: var(--ink-3);
}
.msg p { margin: 0; font-size: 14.5px; line-height: 1.68; }
.msg__src {
  margin-top: 8px !important;
  font-size: 11.5px !important; color: var(--ink-3) !important;
  font-family: var(--mono);
}

.rolesline {
  list-style: none; margin: 22px 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}
.rolesline li {
  padding: 14px 16px 0 0;
  font-size: 13px; color: var(--ink-2); line-height: 1.6;
}
.rolesline li + li { padding-left: 16px; border-left: 1px solid var(--line); }
.rolesline b {
  display: block; margin-bottom: 3px;
  font-size: 11.5px; letter-spacing: .06em; color: var(--ink);
}

.dpanel__note {
  margin: 18px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--accent);
  font-size: 13px; color: var(--ink-2);
}

.kv { margin: 0 0 20px; }
.kv > div {
  display: grid; grid-template-columns: 72px 1fr; gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}
.kv > div:last-child { border-bottom: 0; }
.kv dt { font-family: var(--mono); font-size: 11.5px; color: var(--ink-3); padding-top: 3px; }
.kv dd { margin: 0; font-size: 14.5px; }

.states {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.states li {
  padding: 7px 14px; border-radius: var(--pill);
  border: 1px solid var(--line-2);
  font-size: 12.5px; color: var(--ink-3);
}
.states li.is-on { background: var(--ink); border-color: var(--ink); color: #fff; }

.kpis {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 20px;
}
.kpi { padding: 14px 16px; border-right: 1px solid var(--line); }
.kpi:last-child { border-right: 0; }
.kpi b {
  display: block; font-family: var(--mono); font-size: 20px;
  letter-spacing: -.02em; line-height: 1.3;
}
.kpi span { font-size: 11.5px; color: var(--ink-3); }

.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th {
  text-align: left; font-size: 11.5px; font-weight: 500; letter-spacing: .04em;
  color: var(--ink-3); padding: 8px 10px; border-bottom: 1px solid var(--line-2);
}
.table td { padding: 11px 10px; border-bottom: 1px solid var(--line); }
.table tr:last-child td { border-bottom: 0; }
.table .num { text-align: right; font-family: var(--mono); letter-spacing: -.01em; }

.dpanel__foot {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
  margin-top: 18px;
}
.dpanel__hint { font-size: 12.5px; color: var(--ink-3); }

/* ── 岗位 rail ────────────────────────── */
.rail {
  display: grid; grid-template-columns: repeat(6, minmax(0, 1fr));
  border-top: 1px solid var(--line-2);
}
.rail__item { padding: 26px 20px 0 0; position: relative; }
.rail__item::before {
  content: ""; position: absolute; top: -5px; left: 0;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--tint);
  border: 1px solid var(--ink-3);
}
.rail__item:first-child::before { background: var(--accent); border-color: var(--accent); }
.rail__item h3 { margin: 0 0 8px; font-size: 14.5px; letter-spacing: -.01em; }
.rail__item p { margin: 0; font-size: 13px; color: var(--ink-2); line-height: 1.66; }
.rail__see {
  margin-top: 10px !important;
  font-family: var(--mono); font-size: 11px; color: var(--ink-3) !important;
}
.rail__note { margin: 28px 0 0; font-size: 12.5px; color: var(--ink-3); }

/* ── 小程序手机 ───────────────────────── */
.phone {
  width: 100%; max-width: 340px;
  border-radius: 36px;
  background: var(--card);
  border: 1px solid var(--line);
  padding: 12px;
  box-shadow: 0 30px 60px -44px rgba(21, 24, 26, .55);
}
.phone__screen {
  border-radius: 26px;
  background: #fff;
  border: 1px solid var(--line);
  padding: 14px;
  min-height: 420px;
}
.phone__bar {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 12px; border-bottom: 1px solid var(--line);
  font-size: 12.5px; color: var(--ink-2);
}
.feed { list-style: none; margin: 14px 0; padding: 0; position: relative; }
.feed::before {
  content: ""; position: absolute; left: 4px; top: 8px; bottom: 8px;
  width: 1px; background: var(--line);
}
.feed li { position: relative; padding: 0 0 16px 20px; }
.feed li::before {
  content: ""; position: absolute; left: 1px; top: 7px;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
}
.feed__t { font-size: 13px; font-weight: 600; }
.feed li p { margin: 2px 0 0; font-size: 11.5px; color: var(--ink-3); }

.sign {
  position: relative;
  border: 1px dashed var(--line-2);
  border-radius: 16px;
  padding: 14px 14px 12px;
  background: var(--paper);
}
.sign__seal {
  position: absolute; right: 10px; top: -10px;
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border: 1.5px solid var(--accent); border-radius: 8px;
  color: var(--accent); font-size: 11px; letter-spacing: .08em;
  background: var(--card);
  transform: rotate(-6deg);
}
.sign p { margin: 0; font-size: 12.5px; }
.sign__meta { font-size: 10.5px; color: var(--ink-3); font-family: var(--mono); }

/* ── 三块服务 ─────────────────────────── */
.tri {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.24fr) minmax(0, 1fr);
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-2);
}
.tri__col { padding: 30px 26px 30px 0; }
.tri__col + .tri__col { padding-left: 26px; border-left: 1px solid var(--line); }
.tri__col h3 {
  margin: 0 0 6px; font-size: 13px; letter-spacing: .1em;
  color: var(--ink-3); font-weight: 600;
}
.tri__lead { margin: 0 0 12px; font-size: 17px; font-weight: 650; letter-spacing: -.01em; }
.tri__col p { font-size: 14px; color: var(--ink-2); margin: 0 0 10px; }
.tri__note { font-size: 12.5px !important; color: var(--ink-3) !important; margin: 0 !important; }
.tri__col--mid { background: rgba(255, 255, 255, .5); }

/* 开通说明 */
.license {
  margin-top: clamp(32px, 4vw, 56px);
  border-radius: var(--card-r);
  border: 1px solid var(--line);
  background: var(--card);
  padding: clamp(22px, 3vw, 34px);
}
.license__title { margin: 0 0 20px; font-size: 15px; letter-spacing: .02em; }
.license__grid {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(18px, 2.4vw, 32px);
}
.license__k {
  display: inline-block; margin-bottom: 6px;
  font-size: 12px; color: var(--accent);
}
.license__grid p { margin: 0; font-size: 13.5px; color: var(--ink-2); line-height: 1.7; }
.license__foot {
  margin: 22px 0 0; padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 12.5px; color: var(--ink-3);
}

/* ── 接入 ─────────────────────────────── */
.onboard {
  display: grid; grid-template-columns: minmax(0, 1.24fr) minmax(0, .76fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}
.onboard__steps .steps { display: grid; gap: 0; }
.onboard__steps .steps li {
  display: grid; grid-template-columns: 44px 1fr; gap: 16px;
  padding: 18px 0; border-top: 1px solid var(--line);
  counter-increment: step;
}
.onboard__steps .steps li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--mono); font-size: 12px; color: var(--ink-3); padding-top: 4px;
}
.onboard__steps .steps { counter-reset: step; }
.onboard__steps .steps b { font-size: 15.5px; font-weight: 650; }
.onboard__steps .steps span { grid-column: 2; font-size: 14px; color: var(--ink-2); }

.onboard__aside {
  border-radius: var(--card-r);
  border: 1px solid var(--line);
  background: var(--card);
  padding: clamp(22px, 3vw, 30px);
  position: sticky; top: 92px;
}
.onboard__aside h3 { margin: 0 0 16px; font-size: 15.5px; letter-spacing: -.01em; }
.confirm { list-style: none; margin: 0; padding: 0; }
.confirm li {
  position: relative;
  padding: 10px 0 10px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.confirm li:last-child { border-bottom: 0; }
.confirm li::before {
  content: ""; position: absolute; left: 0; top: 18px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
}
.onboard__note { margin: 18px 0 0; font-size: 12.5px; color: var(--ink-3); line-height: 1.7; }

/* ── FAQ ──────────────────────────────── */
.faq { border-top: 1px solid var(--line); max-width: min(54em, 100%); }
.qa { border-bottom: 1px solid var(--line); }
.qa summary {
  list-style: none; cursor: pointer;
  padding: 20px 40px 20px 0;
  position: relative;
  font-size: 15.5px; font-weight: 550; letter-spacing: -.01em;
}
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after {
  content: "+"; position: absolute; right: 4px; top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono); font-size: 18px; color: var(--ink-3);
  transition: transform .2s ease;
}
.qa[open] summary::after { content: "−"; }
.qa__body { padding: 0 40px 22px 0; }
.qa__body p { margin: 0; font-size: 14.5px; color: var(--ink-2); line-height: 1.78; max-width: min(44em, 100%); }

/* ── 联系 ─────────────────────────────── */
.contact__in {
  display: grid; grid-template-columns: minmax(0, 1fr) 200px;
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  border-radius: 32px;
  border: 1px solid var(--line);
  background:
    radial-gradient(70% 120% at 12% 0%, rgba(185, 59, 36, .06), transparent 62%),
    var(--card);
  padding: clamp(28px, 5vw, 56px);
}
.contact__copy h2 {
  margin: 0 0 14px;
  font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.2rem);
  line-height: 1.3; letter-spacing: -.02em;
}
.contact__lede { margin: 0 0 26px; color: var(--ink-2); font-size: 15.5px; max-width: min(32em, 100%); }
.contact__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.contact__note { margin: 18px 0 0; font-size: 12.5px; color: var(--ink-3); }

.qr { text-align: center; }
.qr__box {
  width: 100%; aspect-ratio: 1;
  border-radius: var(--card-r);
  border: 1px dashed var(--line-2);
  display: grid; place-content: center; gap: 6px;
  padding: 12px;
  background: #fff;
}
.qr__box span { font-size: 12.5px; color: var(--ink-2); }
.qr__box small { font-family: var(--mono); font-size: 9.5px; color: var(--ink-3); }
.qr__cap { margin: 10px 0 0; font-size: 12px; color: var(--ink-3); }

/* ── 页脚 ─────────────────────────────── */
.foot {
  border-top: 1px solid var(--line);
  padding: 40px 0 56px;
  margin-top: var(--sec-y);
}
.foot__in {
  display: grid; grid-template-columns: 200px minmax(0, 1fr) auto;
  gap: 28px; align-items: start;
}
.foot__brand { display: flex; align-items: center; gap: 10px; }
.foot__name { margin: 0; font-weight: 650; font-size: 15px; }
.foot__sub { margin: 0; font-size: 12px; color: var(--ink-3); }
.foot__note { margin: 0; font-size: 11.5px; color: var(--ink-3); line-height: 1.75; max-width: min(48em, 100%); }
.foot__copy { margin: 0; font-size: 11.5px; color: var(--ink-3); white-space: nowrap; }

/* ── 滚动揭示 ─────────────────────────── */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
[data-reveal].is-in { opacity: 1; transform: none; }

/* ── 响应式 ───────────────────────────── */
@media (max-width: 1080px) {
  .nav__links { display: none; }
  .nav__links.is-open {
    display: flex;
    position: absolute; left: var(--gap); right: var(--gap); top: 64px;
    flex-direction: column; align-items: stretch; gap: 2px;
    padding: 10px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--card-r);
    box-shadow: 0 24px 48px -32px rgba(21, 24, 26, .5);
  }
  .nav__links.is-open a { padding: 12px 14px; font-size: 15px; }
  .nav__toggle { display: inline-flex; }
  .nav__inner { position: relative; }

  .rail { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .rail__item:nth-child(4)::before { background: var(--tint); border-color: var(--ink-3); }

  .split--phone { grid-template-columns: minmax(0, 1fr) 300px; }
  .license__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .demos { grid-template-columns: 232px minmax(0, 1fr); }
}

@media (max-width: 860px) {
  .split, .split--media, .split--phone { grid-template-columns: 1fr; gap: 36px; }
  .split--phone .phone { margin-inline: auto; }
  .contact__in { grid-template-columns: 1fr; }
  .qr { max-width: 200px; margin-inline: auto; }
  .onboard { grid-template-columns: 1fr; }
  .onboard__aside { position: static; }
  .foot__in { grid-template-columns: 1fr; gap: 20px; }
  .foot__copy { white-space: normal; }
  .tri { grid-template-columns: 1fr; }
  .tri__col { padding: 24px 0; }
  .tri__col + .tri__col { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kpi:nth-child(2) { border-right: 0; }
  .kpi:nth-child(1), .kpi:nth-child(2) { border-bottom: 1px solid var(--line); }
  .demos { grid-template-columns: 1fr; }
  .demos__tabs {
    flex-direction: row; border-right: 0; border-bottom: 1px solid var(--line);
    overflow-x: auto;
  }
  .tab { border-bottom: 0; border-right: 1px solid var(--line); min-width: 168px; }
  .tab[aria-selected="true"] { box-shadow: inset 0 -3px 0 var(--accent); }
}

@media (max-width: 640px) {
  .probs__row { grid-template-columns: 32px 1fr; row-gap: 8px; padding: 22px 0; }
  .probs__a { grid-column: 2; }
  .probs__row .tag { grid-column: 2; justify-self: start; }
  .rail { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rail__item:nth-child(odd)::before { background: var(--tint); border-color: var(--ink-3); }
  .rail__item:first-child::before { background: var(--accent); border-color: var(--accent); }
  .hero__card {
    display: flex; margin: 12px auto 2px;
    width: 132px; height: 46px;
    animation: none;
  }
  .mini { flex-basis: 46px; height: 46px; padding: 0 12px; }
  .mini b { font-size: 11.5px; }
  .mini i { font-size: 9.5px; }
  .hero__actions { gap: 10px; }
  .hero__actions .btn { width: 100%; }
  .hero__actions .link { width: 100%; justify-content: center; }
  .narr { height: 320vh; }
  .rolesline { grid-template-columns: 1fr; }
  .rolesline li + li { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); margin-top: 12px; }
  .kv > div { grid-template-columns: 1fr; gap: 2px; }
  .steps--inline li { grid-template-columns: 1fr; gap: 4px; }
  .demos__body { min-height: 0; }
  .table { font-size: 12.5px; }
  .table th, .table td { padding: 8px 6px; }
  .contact__in { border-radius: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .narr { height: auto; }
  .narr__sticky { position: static; height: auto; padding: var(--sec-y) 0; }
  .narr__lines { min-height: 0; display: grid; gap: 18px; }
  .narr__lines li {
    position: static; opacity: 1; transform: none; color: var(--ink);
  }
  .narr__lines li em { color: var(--accent); }
  .seal, .narr__meter, .narr__lead { display: none; }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ── 移动端基线 + 动效校正 ─────────────────────────────
   依据：mobile-native（平台层）、emil-design-eng（动效时长/缓动/按压反馈）。
   放在文件末尾覆盖前面同名声明，改这些时优先改这里。 */

:root {
  --ease-out: cubic-bezier(.23, 1, .32, 1);
  --ease-in-out: cubic-bezier(.77, 0, .175, 1);
}

html {
  -webkit-tap-highlight-color: transparent;   /* 去掉 iOS/Android 点击灰闪 */
  -webkit-text-size-adjust: 100%;             /* 横屏不放大字号 */
}

a, button, [role="button"], .tab {
  touch-action: manipulation;                 /* 取消 300ms 双击等待 */
  -webkit-touch-callout: none;
}

button, .btn, .tab, .nav__toggle, .tag, .copy {
  user-select: none;                          /* 长按不选中按钮文字 */
  -webkit-user-select: none;
}

/* 营销首屏用 svh：地址栏收起时不跳布局；叙事段仍用 dvh，它要跟着可视区走 */
.hero { min-height: 100svh; }

/* 按压反馈 160ms，缩小而不是位移，手指落下立刻有反应 */
.btn {
  transition: transform 160ms var(--ease-out),
              background 180ms ease,
              border-color 180ms ease;
}
.btn:active { transform: scale(.97); }

/* 刘海屏：顶栏和底部内容避开安全区 */
.nav { padding-top: env(safe-area-inset-top, 0px); }
.foot { padding-bottom: calc(40px + env(safe-area-inset-bottom, 0px)); }

/* 动效时长收进 300ms 以内，缓动统一走强 ease-out */
[data-reveal] {
  transition: opacity 400ms var(--ease-out), transform 400ms var(--ease-out);
}
.narr__lines li {
  transition: opacity 320ms var(--ease-out),
              transform 320ms var(--ease-out),
              color 320ms ease;
}
.hero__card-track { transition: transform 420ms var(--ease-out); }

@media (hover: none) {
  /* 触屏上不做位移类 hover */
  .probs__row:hover { background: transparent; }
}

@media (max-width: 860px) {
  /* 横向 tab 用原生滚动吸附，别让竖向手势被吞 */
  .demos__tabs {
    scroll-snap-type: x proximity;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
  }
  .tab { scroll-snap-align: start; }
}

/* ── 逐屏核验后的修正 ───────────────────────────────
   1) 岗位 rail：把一条通栏横线改成每格画一段，末格不画，线正好停在上一个圆点上
   2) 手机模型：内容多高就多高，不留空白底
   3) 要点列表：去掉浏览器默认圆点，换成规整的短横线 */

.rail { border-top: 0; }
.rail__item::after {
  content: "";
  position: absolute; top: 0; left: 9px; right: 0;
  height: 1px; background: var(--line-2);
}
.rail__item:last-child::after { display: none; }

@media (max-width: 1080px) {
  .rail__item:nth-child(3n)::after { display: none; }
}
@media (max-width: 640px) {
  .rail__item:nth-child(3n)::after { display: block; }
  .rail__item:nth-child(2n)::after { display: none; }
}

.phone__screen { min-height: 0; padding-bottom: 18px; }

.bullets {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 12px;
}
.bullets li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  color: var(--ink-2);
  line-height: 1.7;
}
.bullets li::before {
  content: "";
  position: absolute; left: 0; top: 13px;
  width: 10px; height: 1.5px;
  background: var(--accent);
}
.bullets b { color: var(--ink); font-weight: 650; }

/* 叙事段：字号提到容器上，min-height 的 em 才跟着标题走
   否则 min-height 按 16px 算，进度条会压到字上 */
.narr__lines {
  font-size: clamp(2rem, 1.2rem + 4.4vw, 4.4rem);
  min-height: 1.25em;
}
.narr__lines li { font-size: inherit; }

/* 参考站节奏：白色画布、轻柔背景光与清晰的产品示意。保留装修超人自己的红色识别。 */
:root {
  --paper: #F8F9F7;
  --tint: #F0F2EF;
  --card: #FFFFFF;
  --line: #E0E4DF;
  --line-2: #CFD4CF;
  --sec-y: clamp(88px, 10vw, 144px);
}

.nav { background: color-mix(in srgb, var(--paper) 90%, transparent); }
.nav__links {
  padding: 3px;
  border-radius: var(--pill);
  background: #ECEFEC;
}
.nav__links a { padding-inline: 12px; }

.hero {
  min-height: 100svh;
  padding-block: clamp(76px, 9vw, 132px) clamp(72px, 8vw, 110px);
  background: #FCFDFC;
}
.hero::before {
  inset: 2% -10% auto;
  height: min(75vw, 740px);
  background:
    radial-gradient(ellipse 31% 33% at 30% 44%, rgba(185,59,36,.065), transparent 100%),
    radial-gradient(ellipse 38% 36% at 68% 50%, rgba(143,165,171,.13), transparent 100%),
    radial-gradient(ellipse 30% 25% at 52% 68%, rgba(218,207,190,.14), transparent 100%);
  filter: blur(24px);
}
.hero__title {
  max-width: min(20em, 100%);
  font-size: clamp(2.2rem, 1.2rem + 3.1vw, 4.15rem);
  line-height: 1.25;
  letter-spacing: -.045em;
}
.hero__sub { margin-top: 30px; }
.hero__actions { margin-top: 38px; }
.hero__fade { background: linear-gradient(to bottom, transparent, var(--paper)); }

.sec h2, .split__copy h2 { letter-spacing: -.035em; text-wrap: balance; }
.sec h2 { font-size: clamp(2rem, 1.22rem + 2.5vw, 3.35rem); }
.split__copy h2 { font-size: clamp(1.85rem, 1.15rem + 2.1vw, 2.9rem); }

.discovery {
  display: grid;
  align-content: space-between;
  gap: 18px;
  min-height: 450px;
  margin: 0;
  padding: clamp(20px, 3vw, 34px);
  border-radius: var(--card-r);
  border: 1px solid #303637;
  background:
    radial-gradient(ellipse at 72% 10%, rgba(185,59,36,.12), transparent 42%),
    radial-gradient(ellipse at 15% 90%, rgba(146,160,151,.13), transparent 46%),
    #171C1D;
  color: #fff;
  box-shadow: 0 28px 70px -48px rgba(16,28,27,.7);
}
.discovery__top, .discovery__bottom {
  display: flex; justify-content: space-between; align-items: center;
  gap: 8px; font: 11px var(--mono); letter-spacing: .035em;
  color: #B8C0BA;
}
.discovery__top span:last-child { color: #F1B6A9; }
.discovery__question { font-size: 15px; color: #BEC9C2; }
.discovery__question b { color: #fff; font-size: clamp(20px, 2vw, 28px); font-weight: 600; }
.discovery__answer {
  padding: clamp(20px, 2.5vw, 30px);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--card-r);
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(12px);
}
.discovery__label { margin: 0 0 8px; font: 11px var(--mono); color: #F1B6A9; }
.discovery__answer strong { display: block; font-size: clamp(18px, 1.5vw, 23px); line-height: 1.4; }
.discovery__answer > p:not(.discovery__label) { margin: 8px 0 18px; color: #C7D0CB; font-size: 13px; }
.discovery__chips { display: flex; flex-wrap: wrap; gap: 7px; }
.discovery__chips span { border: 1px solid rgba(255,255,255,.22); border-radius: var(--pill); padding: 4px 10px; font-size: 11px; }
.discovery__bottom { justify-content: flex-start; gap: 12px; color: #fff; }
.discovery__bottom i { color: #F1B6A9; font-style: normal; }
.discovery figcaption { color: #98A69D; font-size: 11px; line-height: 1.5; }

.demos { box-shadow: 0 32px 80px -62px rgba(32,47,43,.45); }
.tri__col--mid { background: rgba(255,255,255,.75); }

@media (max-width: 1080px) {
  .nav__links { padding: 10px; }
}
@media (max-width: 640px) {
  .hero { padding-block: 46px 74px; }
  .hero__title { font-size: clamp(2rem, 7.8vw, 2.7rem); line-height: 1.33; letter-spacing: -.035em; }
  .discovery { min-height: 410px; }
  .discovery__top { font-size: 9px; }
}

/* 支付宝参考方向：明亮画布、蓝色光感、抽象线图；不使用黑色背景段落。 */
:root {
  --paper: #FFFFFF;
  --tint: #F8FAFD;
  --card: #FFFFFF;
  --ink: #171A20;
  --ink-2: #535D6B;
  --ink-3: #8993A1;
  --line: #E7EBF1;
  --line-2: #D5DCE6;
  --accent: #1677FF;
  --accent-2: #0D5CD1;
  --wrap: 1320px;
  --sec-y: clamp(100px, 13vw, 190px);
}
html { scroll-padding-top: 80px; }
.nav { background: rgba(255,255,255,.86); }
.nav__links { background: #F3F5F8; }
.nav__links a { color: #4D5664; }
.brand { font-weight: 700; letter-spacing: -.025em; }
.brand__mark {
  display: grid; place-items: center; width: 30px; height: 30px;
  background: transparent; border-radius: 0; color: var(--accent);
}
.brand__mark::after { display: none; }
.brand__mark svg { width: 100%; height: 100%; }
.dot { background: var(--accent); }
.eyebrow { color: #637083; }
.btn { background: #171A20; border-color: #171A20; }
.btn--ghost { background: #fff; border-color: var(--line-2); }
.btn--dark { background: #171A20; border-color: #171A20; }
.tag--ok { border-color: #99C0FF; color: var(--accent-2); }
.hero {
  min-height: 100svh;
  background: #fff;
  padding-block: clamp(96px, 10vw, 144px) clamp(90px, 9vw, 130px);
}
.hero::before {
  inset: 5% -8% auto;
  height: min(80vw, 760px);
  background:
    radial-gradient(ellipse 34% 32% at 25% 45%, rgba(176,213,255,.27), transparent 98%),
    radial-gradient(ellipse 38% 30% at 70% 50%, rgba(207,191,255,.19), transparent 98%),
    radial-gradient(ellipse 23% 24% at 52% 69%, rgba(183,234,255,.22), transparent 98%);
  filter: blur(28px);
}
.hero__title { max-width: min(20em, 100%); font-size: clamp(2.5rem, 1.2rem + 4vw, 4.9rem); line-height: 1.2; letter-spacing: -.055em; }
.hero__card {
  display: flex; width: 196px; height: 58px; margin: 22px auto 0;
  top: auto; border-color: #E9EFF8; background: rgba(255,255,255,.76);
  box-shadow: 0 12px 35px -22px rgba(40,75,127,.28);
  animation: none;
}
.mini { flex-basis: 58px; height: 58px; align-items: center; text-align: center; padding-inline: 12px; }
.mini b { font-size: 13px; color: var(--accent-2); }
.mini i { font-size: 10.5px; }
.hero__sub { margin-top: 26px; }
.hero__fade { background: linear-gradient(to bottom, transparent, #fff); }
.sec__icon {
  display: block; width: 74px; height: 74px; margin-bottom: 24px;
  filter: drop-shadow(9px 13px 11px rgba(18,20,22,.14));
  animation: pictogram-float 5.2s ease-in-out infinite;
}
.sec h2, .split__copy h2 { font-weight: 730; line-height: 1.22; }
.sec h2 { font-size: clamp(2.15rem, 1.15rem + 3vw, 4rem); }
.split__copy h2 { font-size: clamp(2rem, 1.1rem + 2.7vw, 3.55rem); }
.section--tint { background: var(--tint); }
.probs__row, .steps--inline li, .rail__item { border-color: var(--line); }
.discovery {
  color: var(--ink);
  border: 1px solid #E3EAF5;
  background:
    radial-gradient(ellipse at 80% 5%, rgba(187,214,255,.38), transparent 50%),
    radial-gradient(ellipse at 8% 95%, rgba(228,218,255,.22), transparent 46%),
    #FFFFFF;
  box-shadow: 0 26px 70px -55px rgba(36,72,130,.34);
}
.discovery__top, .discovery__bottom { color: #7C899A; }
.discovery__top span:last-child, .discovery__label, .discovery__bottom i { color: var(--accent-2); }
.discovery__question { color: #66758B; }
.discovery__question b { color: var(--ink); }
.discovery__answer { background: rgba(246,249,255,.87); border-color: #E2EAF6; backdrop-filter: none; }
.discovery__answer > p:not(.discovery__label) { color: #677486; }
.discovery__chips span { border-color: #D7E4F5; color: #536881; }
.discovery__bottom { color: #34455C; }
.discovery figcaption { color: #8792A0; }
.demos { border-color: var(--line); box-shadow: 0 26px 65px -55px rgba(36,72,130,.3); }
.demos__tabs { background: #F9FAFD; }
.tab[aria-selected="true"] { background: #fff; box-shadow: inset 3px 0 0 var(--accent); }
.msg--ai, .sign, .license, .phone { background: #F7FAFF; }
.sign__seal, .feed li::before, .rail__item:first-child::before { color: var(--accent); border-color: var(--accent); background: var(--accent); }
.sign__seal { background: #fff; }

/* 滚动叙事：四节点连线图，替代旧方印。 */
.narr { height: 420vh; background: #fff; }
.narr__sticky { height: 100svh; background: #fff; }
.narr__stage {
  display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  align-items: center; gap: clamp(30px, 6vw, 90px);
  text-align: left;
}
.narr__copy { min-width: 0; }
.narr__lead {
  display: flex; justify-content: space-between; align-items: center;
  width: min(440px, 100%); margin-bottom: 30px;
  color: #6C7889; font-size: 13px; letter-spacing: .02em;
}
.narr__lead span { font: 12px var(--mono); color: var(--accent); }
.narr__lines { min-height: 210px; font-size: clamp(2.8rem, 2rem + 2.8vw, 5rem); }
.narr__lines li {
  right: auto; width: 100%; font-size: inherit; line-height: 1.15;
  color: #CCD7E5; letter-spacing: -.055em;
  transform: translateY(20px); transition: opacity .42s ease, transform .42s ease, color .42s ease;
}
.narr__lines li.is-on { color: var(--ink); }
.narr__lines li.is-on em { color: var(--accent); }
.narr__lines li small {
  display: block; max-width: min(26em, 100%); margin-top: 22px;
  color: var(--ink-2); font-size: clamp(15px, 1.3vw, 18px);
  font-weight: 400; letter-spacing: 0; line-height: 1.65;
}
.narr__meter { width: min(440px, 100%); height: 3px; margin: 16px 0 0; }
.narr__meter i { width: 100%; transform: scaleX(0); transform-origin: left; }
.narr__visual { position: relative; width: 100%; max-width: 530px; margin-inline: auto; }
.narr__visual svg { display: block; width: 100%; height: auto; overflow: visible; }
.narr__halo { opacity: .72; }
.narr__orbit { fill: none; stroke: #DDE7F4; stroke-width: 1.5; }
.narr__orbit--inner { stroke-dasharray: 3 8; }
.narr__mesh { fill: none; stroke: #DCE8F9; stroke-width: 1.3; }
.narr__connector { fill: none; stroke: #B8CCE8; stroke-width: 1.8; stroke-dasharray: 6 7; }
.narr__core { fill: #fff; stroke: #9CC5FF; stroke-width: 2; filter: drop-shadow(0 12px 24px rgba(22,119,255,.18)); }
.narr__core-mark { fill: none; stroke: var(--accent); stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; }
.narr__point rect { fill: #fff; stroke: #CEDBEA; stroke-width: 1.6; transition: fill .4s ease, stroke .4s ease; }
.narr__point text { fill: #69798E; font: 600 14px var(--sans); text-anchor: middle; transition: fill .4s ease; }
.narr__point.is-on rect, .narr__point.is-past rect { fill: var(--accent); stroke: var(--accent); }
.narr__point.is-on text, .narr__point.is-past text { fill: #fff; }
.narr__point.is-on rect { filter: drop-shadow(0 6px 12px rgba(22,119,255,.3)); }
.narr__visual-note { position: absolute; inset: auto 0 -12px; text-align: center; font-size: 12px; color: #8B97A6; }
.seal { display: none; }

/* 客户跟进后台示例。 */
.crm { border: 1px solid var(--line); border-radius: 18px; overflow: hidden; background: #fff; }
.crm__summary { display: flex; justify-content: space-between; gap: 28px; align-items: end; padding: 22px 24px; background: #F7FAFF; border-bottom: 1px solid var(--line); }
.crm__overline { color: #75849A; font: 11px var(--mono); letter-spacing: .05em; }
.crm__summary h3 { margin: 6px 0 4px; font-size: 23px; letter-spacing: -.03em; }
.crm__summary p { margin: 0; font-size: 13px; color: var(--ink-2); }
.crm__status { display: inline-flex; vertical-align: middle; padding: 4px 10px; border-radius: var(--pill); background: #E7F0FF; color: var(--accent-2); font-size: 11px; font-weight: 500; letter-spacing: 0; }
.crm__summary dl { display: flex; gap: 25px; margin: 0; }
.crm__summary dt { color: #8491A2; font-size: 11px; }
.crm__summary dd { margin: 2px 0 0; font-size: 12px; white-space: nowrap; }
.crm__grid { display: grid; grid-template-columns: 1.05fr .95fr; }
.crm__history, .crm__assist { padding: 22px 24px; }
.crm__history { border-right: 1px solid var(--line); }
.crm h4 { margin: 0 0 17px; font-size: 14px; font-weight: 650; }
.crm h4 span { color: #94A0AF; font: 11px var(--mono); font-weight: 400; }
.crm__history ol { margin: 0; padding: 0 0 0 17px; list-style: none; border-left: 1px solid #D5E1F1; }
.crm__history li { position: relative; padding: 0 0 16px 17px; }
.crm__history li:last-child { padding-bottom: 0; }
.crm__history li::before { content: ""; position: absolute; left: -22px; top: 4px; width: 9px; height: 9px; border-radius: 50%; background: #fff; border: 2px solid var(--accent); }
.crm__history time { display: block; color: #8D99A8; font: 11px var(--mono); }
.crm__history b { display: block; margin-top: 4px; font-size: 13px; }
.crm__history p, .crm__assist p { margin: 4px 0 0; font-size: 12px; line-height: 1.65; color: var(--ink-2); }
.crm__assist { display: grid; gap: 13px; }
.crm__assist section { padding: 16px; border: 1px solid #E1EAF7; border-radius: 14px; background: #FAFCFF; }
.crm__assist h4 { display: flex; align-items: center; gap: 7px; margin-bottom: 7px; }
.crm__assist h4 svg { width: 22px; height: 22px; color: var(--accent); }
.crm__assist small { display: block; margin-top: 10px; color: #8996A5; font-size: 10px; line-height: 1.5; }
.crm__reminder-time { color: var(--accent-2); font-size: 13px; }
.crm__reminder-time b { font: 17px var(--mono); }
.contact__in {
  background: radial-gradient(ellipse 80% 100% at 12% 0%, rgba(194,220,255,.28), transparent 70%), #fff;
}
.tri__icon {
  display: block; width: 54px; height: 54px; margin-bottom: 20px;
  filter: drop-shadow(7px 10px 8px rgba(18,20,22,.13));
  animation: pictogram-float 5.2s ease-in-out infinite;
}
.tri:nth-child(2) .tri__icon { animation-delay: -1.7s; }
.tri:nth-child(3) .tri__icon { animation-delay: -3.4s; }
@keyframes pictogram-float {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-7px) rotate(1deg); }
}
@media (prefers-reduced-motion: reduce) {
  .sec__icon, .tri__icon { animation: none; }
}

@media (max-width: 860px) {
  .narr__stage { grid-template-columns: 1fr; gap: 0; }
  .narr__copy { order: 2; text-align: center; }
  .narr__lead { margin: 0 auto 20px; }
  .narr__lines { min-height: 150px; font-size: clamp(2.35rem, 6.2vw, 3.6rem); }
  .narr__lines li { left: 0; right: 0; }
  .narr__lines li small { margin: 12px auto 0; }
  .narr__meter { margin-inline: auto; }
  .narr__visual { order: 1; max-width: min(410px, 48svh); }
  .crm__summary { align-items: start; }
}
@media (max-width: 640px) {
  .hero { padding-block: 56px 74px; }
  .hero__title { font-size: clamp(2.05rem, 8.2vw, 2.85rem); line-height: 1.3; }
  .hero__card { margin-top: 18px; width: 180px; }
  .sec__icon { width: 58px; height: 58px; margin-bottom: 18px; }
  .narr { height: 350vh; }
  .narr__sticky { height: 100svh; }
  .narr__stage { padding-block: 60px; }
  .narr__visual { max-width: min(350px, 43svh); }
  .narr__visual { margin-bottom: 34px; }
  .narr__lines { font-size: clamp(2.15rem, 9.2vw, 3rem); min-height: 145px; }
  .narr__lines li small { font-size: 14px; }
  .crm__summary { display: block; padding: 18px; }
  .crm__summary dl { margin-top: 14px; gap: 20px; }
  .crm__grid { grid-template-columns: 1fr; }
  .crm__history, .crm__assist { padding: 18px; }
  .crm__history { border-right: 0; border-bottom: 1px solid var(--line); }
}
@media (prefers-reduced-motion: reduce) {
  .narr { height: auto; }
  .narr__sticky { height: auto; position: static; }
  .narr__stage { display: block; padding-block: 80px; }
  .narr__lines { display: grid; gap: 28px; min-height: 0; }
  .narr__lines li { position: static; opacity: 1; color: var(--ink); transform: none; }
  .narr__lines li small { margin-top: 5px; }
  .narr__visual, .narr__meter { display: none; }
}

/* 首屏标题层级与轮播胶囊 */
.hero__title {
  max-width: 100%;
  margin: 0 auto;
  font-size: clamp(2.9rem, 1.55rem + 4.05vw, 5rem);
  line-height: 1.2;
  letter-spacing: -.055em;
}
.hero__statement {
  margin: 22px auto 0;
  color: var(--ink);
  font-size: clamp(1.35rem, 1rem + 1.3vw, 2rem);
  font-weight: 400;
  line-height: 1.42;
  letter-spacing: -.035em;
  text-wrap: balance;
}
.hero__statement span { display: block; }
.hero__card {
  width: 252px;
  height: 76px;
  margin-top: 26px;
}
.mini { flex-basis: 76px; height: 76px; }
.mini b { font-size: 17px; line-height: 1.3; }
.mini i { margin-top: 3px; font-size: 12px; line-height: 1.4; }
.hero__sub { max-width: min(44em, 100%); margin-top: 28px; }
@media (max-width: 640px) {
  .hero__title { max-width: min(11em, 100%); font-size: clamp(2.15rem, 9vw, 2.7rem); line-height: 1.26; }
  .hero__statement { margin-top: 18px; font-size: clamp(1.15rem, 4.8vw, 1.35rem); line-height: 1.48; }
  .hero__card { width: 222px; height: 68px; margin-top: 22px; }
  .mini { flex-basis: 68px; height: 68px; }
  .mini b { font-size: 15px; }
  .mini i { font-size: 11px; }
  .hero__sub { margin-top: 24px; }
}

/* 四段演示里的聊天窗口与小程序页面 */
.wechat-demo {
  width: min(100%, 520px); margin-inline: auto;
  overflow: hidden; border: 1px solid #DDE0E3; border-radius: 20px;
  background: #EDEDED; box-shadow: 0 22px 52px -38px rgba(31,43,46,.38);
}
.wechat-demo__status, .mini-demo__status {
  display: flex; align-items: center; justify-content: space-between;
  height: 24px; padding-inline: 18px; color: #333;
  font: 600 10px var(--sans); letter-spacing: .02em;
}
.wechat-demo__header, .mini-demo__appbar {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 52px; padding: 0 16px; border-bottom: 1px solid #DDE0E3;
  color: #1C1D1F; font-size: 15px; background: #F6F6F6;
}
.wechat-demo__header strong, .mini-demo__appbar strong { font-weight: 600; }
.wechat-demo__header > span:first-child, .mini-demo__appbar > span:first-child { font: 32px/1 var(--sans); }
.wechat-demo__header > span:last-child { font-size: 24px; line-height: 1; }
.wechat-demo__chat { display: grid; align-content: start; gap: 16px; min-height: 390px; padding: 14px 18px 28px; }
.wechat-demo__time { margin: 0; text-align: center; color: #9B9FA1; font-size: 11px; }
.wechat-msg { display: flex; align-items: flex-start; gap: 9px; max-width: 88%; }
.wechat-msg--reply { justify-self: end; flex-direction: row-reverse; }
.wechat-msg__avatar {
  display: grid; place-items: center; flex: 0 0 34px; width: 34px; height: 34px;
  border-radius: 6px; background: #D4C6B4; color: #fff; font-size: 14px; font-weight: 600;
}
.wechat-msg--reply .wechat-msg__avatar { background: #419B79; }
.wechat-msg__who { display: block; margin-bottom: 5px; color: #888E90; font-size: 10px; }
.wechat-msg--reply .wechat-msg__who { text-align: right; }
.wechat-msg__bubble {
  position: relative; padding: 10px 13px; border-radius: 7px;
  background: #fff; color: #222; font-size: 13px; line-height: 1.65;
  box-shadow: 0 1px 2px rgba(0,0,0,.05);
}
.wechat-msg--reply .wechat-msg__bubble { background: #95EC69; }
.wechat-msg__bubble small { display: block; margin-top: 9px; padding-top: 8px; border-top: 1px solid rgba(0,0,0,.1); color: #46633F; font-size: 10px; }
.wechat-demo__notice { justify-self: center; max-width: 92%; padding: 5px 12px; border-radius: var(--pill); background: #DCDDDE; color: #777D7F; text-align: center; font-size: 10px; }
.wechat-demo__composer { display: flex; align-items: center; gap: 10px; min-height: 55px; padding: 9px 13px; border-top: 1px solid #D4D8DA; background: #F7F7F7; color: #565C5F; font-size: 21px; }
.wechat-demo__composer span:nth-child(2) { flex: 1; padding: 7px 12px; border-radius: 5px; background: #fff; color: #BBC0C3; font-size: 12px; }

.mini-demo {
  display: grid; place-items: center; padding: 22px;
  border: 1px solid #E5EBF3; border-radius: 20px;
  background: radial-gradient(circle at 50% 0, #EAF2FF, #F8FAFD 65%);
}
.mini-demo__screen {
  width: min(100%, 460px); max-height: 640px; overflow-y: auto;
  border: 1px solid #DDE4EE; border-radius: 20px;
  background: #F5F6F8; box-shadow: 0 22px 48px -32px rgba(31,67,121,.36);
  scrollbar-width: thin; scrollbar-color: #CAD6E5 transparent;
}
.mini-demo__status { position: sticky; top: 0; z-index: 3; background: #fff; }
.mini-demo__appbar { position: sticky; top: 24px; z-index: 3; border-color: #EEF0F3; background: #fff; }
.mini-demo__menu { padding: 3px 9px; border: 1px solid #DDE2E8; border-radius: var(--pill); color: #4B535D; font-size: 12px; letter-spacing: .08em; }
.mini-demo__page-title { display: flex; justify-content: space-between; align-items: baseline; padding: 20px 18px 12px; font-size: 20px; font-weight: 700; }
.mini-demo__page-title small { color: #A0A8B2; font-size: 10px; font-weight: 400; }
.mini-demo__tabbar {
  position: sticky; bottom: 0; display: flex; justify-content: space-around;
  padding: 11px 8px 13px; border-top: 1px solid #E6E9EF;
  background: rgba(255,255,255,.96); color: #8A929C; font-size: 11px;
}
.mini-demo__tabbar .is-current { color: var(--accent); font-weight: 650; }
.mini-demo .crm { margin: 0 14px 20px; border-radius: 14px; box-shadow: none; }
.mini-demo .crm__summary { display: block; padding: 17px; }
.mini-demo .crm__summary dl { display: flex; gap: 18px; margin-top: 14px; }
.mini-demo .crm__grid { grid-template-columns: 1fr; }
.mini-demo .crm__history, .mini-demo .crm__assist { padding: 17px; }
.mini-demo .crm__history { border-right: 0; border-bottom: 1px solid var(--line); }
.mini-demo .crm__assist section { background: #F9FBFF; }

.project-app { padding: 18px 14px 22px; }
.project-app__intro { padding: 10px 6px 18px; }
.project-app__intro small { color: #8C96A4; font-size: 11px; }
.project-app__intro h3 { margin: 4px 0 8px; font-size: 26px; line-height: 1.25; }
.project-app__intro span { display: inline-flex; padding: 4px 10px; border-radius: var(--pill); background: #E9F1FF; color: var(--accent-2); font-size: 11px; }
.project-app__card { margin-bottom: 12px; padding: 17px; border: 1px solid #E7EBF2; border-radius: 14px; background: #fff; }
.project-app__card h4 { margin: 0 0 10px; font-size: 15px; }
.project-app__card .kv { margin: 0; }
.project-app__card .kv > div { grid-template-columns: 1fr; gap: 1px; padding: 9px 0; }
.project-app__card .kv dt { font: 11px var(--sans); color: #929DAA; }
.project-app__card .kv dd { font-size: 12px; line-height: 1.55; }
.project-app__card .states { gap: 6px; }
.project-app__card .states li { padding: 5px 9px; font-size: 10px; }
.project-app__card .states li.is-on { background: var(--accent); border-color: var(--accent); }
.project-app__remind { padding: 11px 13px; border-radius: 12px; background: #FFF9E9; color: #806836; font-size: 11px; line-height: 1.6; }

@media (max-width: 640px) {
  .mini-demo { padding: 8px; }
  .mini-demo__screen { max-height: 66svh; border-radius: 14px; }
  .wechat-demo__chat { min-height: 340px; padding-inline: 12px; }
  .wechat-msg { max-width: 95%; }
  .wechat-msg__bubble { font-size: 12px; }
}

/* 全站小字：说明和辅助信息保持清晰的深色及可读字号。 */
:root { --ink-2: #272C34; --ink-3: #39414B; }
.nav__links a, .eyebrow, .link { color: var(--ink-2); font-size: 15px; }
.tag, .tag--demo { color: var(--ink-2); font-size: 14px; height: auto; min-height: 28px; }
.hero__sub, .sec__sub, .split__lede, .contact__lede { color: var(--ink-2); font-size: 17px; }
.mini i { color: var(--ink-2); font-size: 13px; }
.narr__lead, .narr__visual-note, .split__note, .rail__note,
.onboard__note, .contact__note, .qr__cap, .dpanel__hint,
.license__foot, .foot__sub, .foot__note, .foot__copy,
.discovery figcaption { color: var(--ink-2); font-size: 15px; }
.narr__lead span { font-size: 14px; }
.probs__idx, .onboard__steps .steps li::before { color: var(--ink-2); font-size: 14px; }
.probs__a, .steps--inline span, .onboard__steps .steps span,
.qa__body p { color: var(--ink-2); font-size: 16px; }
.steps--inline b { font-size: 16px; }
.slot__k, .slot__d { color: var(--ink-2); font-size: 14px; }
.tab__k { font-size: 16px; }
.tab__d, .dpanel__title { color: var(--ink-2); font-size: 14px; }
.rail__item h3 { font-size: 16px; }
.rail__item p, .rail__see { color: var(--ink-2) !important; font-size: 15px; }
.phone__bar, .feed li p, .sign p, .sign__meta,
.qr__box span, .qr__box small { color: var(--ink-2); font-size: 14px; }
.feed__t { font-size: 15px; }
.tri__col h3 { color: var(--ink); font-size: 16px; }
.tri__col p, .tri__note { color: var(--ink-2) !important; font-size: 16px !important; line-height: 1.7; }
.tri__col .tri__lead { color: var(--ink) !important; font-size: 18px !important; }
.license__title { font-size: 18px; }
.license__k { color: var(--ink); font-size: 15px; font-weight: 600; }
.license__grid p { color: var(--ink-2); font-size: 16px; }
.table { font-size: 15px; }
.table th, .kv dt, .kpi span { color: var(--ink-2); font-size: 14px; }
.discovery__top, .discovery__bottom, .discovery__question,
.discovery__answer > p:not(.discovery__label) { color: var(--ink-2); font-size: 15px; }
.discovery__label, .discovery__chips span { font-size: 13px; }
.crm__overline, .crm__summary dt, .crm h4 span, .crm__history time,
.crm__assist small { color: var(--ink-2); font-size: 12px; }
.crm__summary p, .crm__summary dd, .crm__history b,
.crm__history p, .crm__assist p { color: var(--ink-2); font-size: 14px; }
.crm__status { font-size: 12px; }
.wechat-demo__time, .wechat-msg__who, .wechat-demo__notice,
.wechat-demo__composer span:nth-child(2), .mini-demo__page-title small,
.mini-demo__tabbar, .project-app__intro small, .project-app__card .kv dt,
.project-app__remind { color: var(--ink-2); font-size: 12px; }
.wechat-msg__bubble, .wechat-msg__bubble small,
.project-app__card .kv dd { font-size: 14px; }
.project-app__card .states li, .project-app__intro span { font-size: 12px; }

@media (max-width: 640px) {
  .license__grid { grid-template-columns: 1fr; }
  .mini i { font-size: 12px; }
  .table { font-size: 14px; }
  .wechat-msg__bubble { font-size: 13px; }
}

/* HRE 品牌标志与中英文名称。 */
.brand__mark { width: 38px; height: 38px; flex: none; }
.brand__mark img { display: block; width: 100%; height: 100%; }
.brand__name { display: grid; gap: 1px; line-height: 1.2; white-space: nowrap; }
.brand__name small { color: var(--ink-2); font-size: 10px; font-weight: 550; letter-spacing: .01em; }
.foot__brand .brand__mark { width: 42px; height: 42px; }
.foot__name span { margin-left: 4px; font-size: 12px; font-weight: 550; }

/* 相同的演示设备高度；小程序内容仍可在内部滚动。 */
.mini-demo { width: min(100%, 520px); height: var(--demo-frame-height, 524px); margin-inline: auto; padding: 0; border: 0; background: none; }
.mini-demo__screen { width: 100%; height: 100%; max-height: none; }

/* 施工进度对应的本周付款提醒。 */
.weekly-pay {
  display: grid; grid-template-columns: minmax(175px, .55fr) 1fr;
  gap: 10px 24px; margin: 0 0 20px; padding: 18px 20px;
  border: 1px solid #D9E6F7; border-radius: 16px; background: #F7FAFF;
}
.weekly-pay__total span { display: block; color: var(--ink-2); font-size: 14px; }
.weekly-pay__total strong { display: block; margin-top: 3px; font: 700 26px/1.3 var(--mono); color: var(--ink); }
.weekly-pay__detail { display: grid; align-content: center; gap: 4px; font-size: 14px; color: var(--ink-2); }
.weekly-pay p { grid-column: 1 / -1; margin: 2px 0 0; padding-top: 10px; border-top: 1px solid #D9E6F7; color: var(--ink-2); font-size: 14px; }

/* 第二屏滚动行程减半，四个节点的切换速度约为原来的两倍。 */
.narr { height: 260vh; }
@media (max-width: 640px) {
  .narr { height: 225vh; }
  .weekly-pay { grid-template-columns: 1fr; padding: 16px; }
}
@media (max-width: 360px) {
  .nav__inner { gap: 6px; }
  .nav__act { gap: 6px; margin-left: 0; }
  .nav__act .btn { height: 44px; padding-inline: 12px; font-size: 14px; }
  .nav__toggle { width: 38px; height: 38px; }
  .brand__mark { width: 32px; height: 32px; }
  .brand__name small { font-size: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  .narr { height: auto; }
}

/* 客户待签字验收单示意。 */
.acceptance { padding-top: 18px; color: var(--ink); }
.acceptance__head { display: flex; justify-content: space-between; align-items: center; gap: 8px; color: var(--ink-2); font-size: 13px; }
.acceptance__head strong { flex: none; padding: 5px 9px; border-radius: 999px; background: #EAF2FF; color: #1769DB; font-size: 12px; }
.acceptance h3 { margin: 16px 0 6px; font-size: 21px; line-height: 1.3; }
.acceptance__intro { margin: 0 0 15px; color: var(--ink-2); font-size: 13px; line-height: 1.55; }
.acceptance__list { margin: 0; border-top: 1px solid var(--line); }
.acceptance__list div { display: flex; justify-content: space-between; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.acceptance__list dt { flex: none; color: var(--ink-2); font-size: 13px; }
.acceptance__list dd { margin: 0; text-align: right; font-size: 13px; font-weight: 600; line-height: 1.45; }
.acceptance__signature { display: grid; gap: 8px; margin-top: 16px; padding: 13px; border: 1px dashed #B8CBDF; border-radius: 12px; background: #FAFCFF; }
.acceptance__signature span { font-size: 13px; font-weight: 650; }
.acceptance__signature strong { display: grid; place-items: center; min-height: 58px; border-bottom: 1px solid #C6D5E6; color: #596779; font-size: 14px; font-weight: 500; }
.acceptance__signature small { color: var(--ink-2); font-size: 12px; line-height: 1.4; }
.acceptance__action { margin-top: 13px; padding: 11px 12px; border-radius: 999px; background: #171A20; color: #fff; text-align: center; font-size: 14px; font-weight: 650; }
.acceptance__reminder { margin: 11px 0 0; color: var(--ink-2); font-size: 12px; line-height: 1.45; }

/* 首屏滚动胶囊的三个场景分别使用柔和的提示色。 */
.hero__card { background: #EAF4FF; border-color: #E4EAF3; }
.hero__card .mini:nth-child(1) { background: #EAF4FF; }
.hero__card .mini:nth-child(2) { background: #FFF0DF; }
.hero__card .mini:nth-child(3) { background: #F1EBFF; }
.hero__card .mini:nth-child(1) b { color: #1765AE; }
.hero__card .mini:nth-child(2) b { color: #98550C; }
.hero__card .mini:nth-child(3) b { color: #6743A4; }

/* GEO：简洁的 AI 问答窗口示意。 */
.discovery--chat {
  display: flex; flex-direction: column; gap: 0;
  min-height: 520px; padding: 0; overflow: hidden;
  border: 1px solid #E3E7F0; border-radius: 24px;
  background: #fff; box-shadow: 0 28px 70px -50px rgba(35,48,95,.27);
}
.discovery-chat__header {
  display: flex; align-items: center; gap: 10px;
  min-height: 58px; padding: 0 22px;
  border-bottom: 1px solid #F0F1F5;
  color: #242631; font-size: 15px;
}
.discovery-chat__avatar {
  display: block; flex: none; width: 30px; height: 30px;
  border-radius: 11px 11px 11px 4px;
  background: radial-gradient(circle at 32% 26%, #fff 2%, #C6D6FF 28%, #A998F1 62%, #897BDB 100%);
  box-shadow: 0 3px 9px rgba(125,112,218,.22);
}
.discovery-chat__avatar--small { width: 27px; height: 27px; border-radius: 10px 10px 10px 4px; }
.discovery-chat__more { margin-left: auto; color: #8C92A4; font-size: 18px; letter-spacing: 2px; }
.discovery-chat__conversation {
  display: flex; flex-direction: column; gap: 26px;
  flex: 1; padding: 30px 24px 22px;
  background: linear-gradient(#FCFCFF, #fff 40%);
}
.discovery-chat__question {
  align-self: flex-end; max-width: 85%; margin: 0;
  padding: 13px 17px; border-radius: 18px 18px 4px 18px;
  background: #F1F1F7; color: #242631; font-size: 15px; line-height: 1.55;
}
.discovery-chat__reply { display: flex; align-items: flex-start; gap: 11px; }
.discovery-chat__answer { min-width: 0; color: #242631; font-size: 15px; line-height: 1.7; }
.discovery-chat__answer p { margin: 0 0 10px; }
.discovery-chat__answer ol { margin: 0 0 10px; padding-left: 1.5em; }
.discovery-chat__answer li + li { margin-top: 5px; }
.discovery-chat__sources { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 18px; }
.discovery-chat__sources span {
  padding: 6px 11px; border: 1px solid #E4E8F3; border-radius: 999px;
  background: #F8F9FC; color: #505B70; font-size: 12px; line-height: 1.2;
}
.discovery-chat__composer {
  display: flex; align-items: center; justify-content: space-between;
  margin: 0 22px 16px; padding: 10px 11px 10px 16px;
  border: 1px solid #E5E7EF; border-radius: 18px;
  background: #fff; color: #737C8D; font-size: 13px;
  box-shadow: 0 5px 18px rgba(39,48,83,.05);
}
.discovery-chat__composer i {
  display: grid; place-items: center; width: 27px; height: 27px;
  border-radius: 50%; background: #6865DE; color: #fff;
  font-size: 18px; font-style: normal; line-height: 1;
}
.discovery--chat figcaption { padding: 0 23px 17px; color: var(--ink-2); font-size: 12px; line-height: 1.5; }

/* 对话按阅读节奏入场，保留最终排版，避免窗口和后续页面跳动。 */
.chat-replay {
  flex: none; margin-left: auto; padding: 6px 9px;
  border: 1px solid #E1E4EB; border-radius: 999px;
  background: transparent; color: #505867; font: 500 12px/1.2 var(--sans);
  cursor: pointer;
}
.chat-replay[hidden] { display: none; }
.wechat-demo__header .chat-replay { margin-left: 0; }
.wechat-demo__header strong { flex: 1; text-align: center; }
.chat-replay:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.chat-replay:active { background: #E9EBF1; }
.discovery-chat__answer, .wechat-msg__content { position: relative; }
.chat-typing { display: none; }
.chat-playback-ready [data-chat-at] {
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity 240ms var(--ease-out), transform 240ms var(--ease-out);
}
.chat-playback-ready [data-chat-at].is-chat-visible {
  opacity: 1; visibility: visible; transform: none;
}
.chat-playback-reset [data-chat-at] { transition: none; }
.chat-playback-ready .chat-typing {
  display: inline-flex; align-items: center; gap: 9px;
  position: absolute; top: 0; left: 0; white-space: nowrap;
  color: #626879; font-size: 12px; line-height: 26px;
  opacity: 0; visibility: hidden;
}
.chat-playback-ready .chat-typing.is-chat-visible { opacity: 1; visibility: visible; }
.chat-playback-ready .chat-typing--wechat { left: auto; right: 0; }
.chat-typing__dots { display: inline-flex; gap: 4px; align-items: center; }
.chat-typing__dots i { width: 4px; height: 4px; border-radius: 50%; background: currentColor; }
.is-chat-visible .chat-typing__dots i { animation: chat-dot 900ms ease-in-out infinite; }
.chat-typing__dots i:nth-child(2) { animation-delay: 150ms; }
.chat-typing__dots i:nth-child(3) { animation-delay: 300ms; }
@keyframes chat-dot { 0%, 70%, 100% { opacity: .35; transform: none; } 35% { opacity: 1; transform: translateY(-3px); } }
@media (prefers-reduced-motion: reduce) {
  .chat-playback-ready [data-chat-at] { opacity: 1; visibility: visible; transform: none; transition: none; }
  .chat-playback-ready .chat-typing, .chat-replay { display: none; }
}
@media (max-width: 640px) {
  .discovery--chat { min-height: 0; }
  .discovery-chat__conversation { gap: 22px; padding: 24px 16px 18px; }
  .discovery-chat__header { padding-inline: 16px; }
  .discovery-chat__question, .discovery-chat__answer { font-size: 14px; }
  .discovery-chat__composer { margin-inline: 16px; }
  .discovery--chat figcaption { padding-inline: 17px; }
}

/* 参考立体数字的厚重字形；位置与透明度由滚动进度控制。 */
.sculpt-title {
  position: relative;
  color: #15171C;
  transform-origin: 50% 65%;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  transition: transform .12s ease-out, opacity .12s ease-out, filter .12s ease-out;
  text-shadow:
    0 1px 0 #767B84,
    0 2px 0 #373B43,
    0 5px 8px rgba(23,26,32,.13);
}
.sculpt-title__glyphs { display: inline; }
.sculpt-title__char {
  display: inline-block;
  white-space: pre;
  transform-origin: 50% 60%;
  backface-visibility: hidden;
  user-select: none;
}
@media (hover: hover) and (pointer: fine) {
  .sculpt-title__char { cursor: grab; }
  .sculpt-title.is-elastic-dragging .sculpt-title__char { cursor: grabbing; }
}
@media (max-width: 640px) {
  .sculpt-title {
    text-shadow:
      0 1px 0 #5B6068,
      0 2px 0 #272B32,
      0 4px 6px rgba(23,26,32,.1);
  }
}
@media (prefers-reduced-motion: reduce) {
  .sculpt-title { opacity: 1 !important; filter: none !important; transform: none !important; }
  .sculpt-title__char { transform: none !important; opacity: 1 !important; transition: none !important; }
}