/* ═══════════════════════════════════════════════════════════
   INTENT — 宣发网站
   字体策略（本地字体，无外部依赖）
   · Agibot Display  → 仅 Logo「INTENT」字标
   · DisplaySANS Bold (749)  → 标题
   · DisplaySANS Light      → 正文
   视觉语言：瑞士国际主义 · 黑白灰 + 单点红
   ═══════════════════════════════════════════════════════════ */

/* ── 1. 字体 ─────────────────────────────────────────────── */
/* 正文：DisplaySANS Light（woff2 子集，按站点实际用字裁剪） */
@font-face {
  font-family: 'DisplaySANS';
  src: url('Font/DisplaySANS-Light.subset.woff2') format('woff2');
  font-weight: 100 450;
  font-style: normal;
  font-display: swap;
}
/* 标题：DisplaySANS Bold（woff2 子集） */
@font-face {
  font-family: 'DisplaySANS';
  src: url('Font/DisplaySANS-Bold.subset.woff2') format('woff2');
  font-weight: 451 900;
  font-style: normal;
  font-display: swap;
}
/* 仅 Logo：Agibot Display */
@font-face {
  font-family: 'Agibot Display';
  src: url('Font/AgibotDisplay-Bold.ttf') format('truetype');
  font-weight: 400 900;
  font-style: normal;
  font-display: swap;
}

/* ── 2. 令牌 ─────────────────────────────────────────────── */
:root {
  --ink:        #0A0A0A;
  --ink-soft:   #171717;
  --paper:      #F4F3F1;
  --paper-2:    #EDEBE6;
  --white:      #FFFFFF;
  --red:        #E0301E;
  --red-deep:   #B01F11;

  --gray-70:    #57564F;
  --gray-50:    #8A8880;
  --gray-30:    #BAB8B1;
  --line:       rgba(10, 10, 10, .13);
  --line-inv:   rgba(255, 255, 255, .13);

  --font:       'DisplaySANS', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
  --font-logo:  'Agibot Display', 'DisplaySANS', sans-serif;

  --wrap:       1440px;
  --pad:        clamp(20px, 5vw, 72px);
  --sec-y:      clamp(80px, 10vw, 148px);
  --r:          24px;
  --ease:       cubic-bezier(.2, .7, .2, 1);
  --ease-out:   cubic-bezier(.16, 1, .3, 1);
  --ease-io:    cubic-bezier(.76, 0, .24, 1);
}

/* ── 3. 重置 ─────────────────────────────────────────────── */
*, *::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(--font);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4 { margin: 0; font-weight: 700; line-height: 1.2; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; }
figure { margin: 0; }
del { text-decoration: none; }
a { color: inherit; }

::selection { background: var(--red); color: #fff; }

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

/* ── 4. 氛围层 ───────────────────────────────────────────── */
.grain {
  position: fixed;
  inset: 0;
  z-index: 30;
  pointer-events: none;
  opacity: .035;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  background-size: 180px 180px;
}

.rules {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  display: flex;
  justify-content: space-between;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
}
.rules span { width: 1px; height: 100%; background: var(--line); opacity: .5; }

.progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 2px;
  z-index: 70;
  pointer-events: none;
}
.progress i {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--red);
  transform: scale3d(0, 1, 1);
  transform-origin: left center;
  will-change: transform;
}

/* ── 5. 导航 ─────────────────────────────────────────────── */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  --nav-fg: #FFFFFF;
  color: var(--nav-fg);
  border-bottom: 1px solid transparent;
  transition: background .45s var(--ease), border-color .45s var(--ease), color .45s var(--ease), backdrop-filter .45s var(--ease), transform .55s var(--ease-io);
  will-change: transform;
}
.nav.is-hidden { transform: translate3d(0, -101%, 0); }
.nav__end { display: flex; align-items: center; gap: 14px; }
.nav__inner {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav.is-light {
  --nav-fg: #0A0A0A;
  background: rgba(244, 243, 241, .82);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  backdrop-filter: blur(20px) saturate(1.4);
  border-bottom-color: var(--line);
}
.nav.is-dark.is-scrolled {
  background: rgba(10, 10, 10, .62);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  backdrop-filter: blur(20px) saturate(1.4);
  border-bottom-color: var(--line-inv);
}

.logo {
  font-family: var(--font-logo);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: .18em;
  text-decoration: none;
  white-space: nowrap;
}
.logo--sm { font-size: 17px; display: block; margin-bottom: 12px; }

.nav__menu { display: flex; gap: 34px; }
.nav__menu a {
  position: relative;
  font-size: 14px;
  letter-spacing: .04em;
  text-decoration: none;
  opacity: .72;
  transition: opacity .3s var(--ease);
  padding-bottom: 3px;
}
.nav__menu a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform .45s var(--ease);
}
.nav__menu a:hover { opacity: 1; }
.nav__menu a:hover::after { transform: scaleX(1); transform-origin: left center; }
.nav__menu a.is-active { opacity: 1; }
.nav__menu a.is-active::after { transform: scaleX(1); background: var(--red); }

/* 移动端菜单按钮 */
.nav__burger {
  display: none;
  position: relative;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 0;
  background: transparent;
  color: currentColor;
  cursor: pointer;
}
.nav__burger span {
  position: absolute;
  left: 9px;
  right: 9px;
  height: 1.5px;
  background: currentColor;
  transition: transform .45s var(--ease-io), opacity .3s var(--ease);
}
.nav__burger span:nth-child(1) { top: 16px; }
.nav__burger span:nth-child(2) { top: 24px; }
body.menu-open .nav__burger span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
body.menu-open .nav__burger span:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }
body.menu-open .nav {
  --nav-fg: #FFFFFF;
  background: transparent !important;
  border-bottom-color: transparent !important;
  -webkit-backdrop-filter: none !important;
  backdrop-filter: none !important;
}
body.menu-open { overflow: hidden; }

/* 全屏移动菜单 */
.menu {
  position: fixed;
  inset: 0;
  z-index: 55;
  display: none;
  grid-template-rows: 1fr auto;
  padding: 104px var(--pad) 36px;
  background: var(--ink);
  color: #fff;
  clip-path: inset(0 0 100% 0);
  transition: clip-path .72s var(--ease-io);
  pointer-events: none;
}
.menu.is-open { clip-path: inset(0 0 0 0); pointer-events: auto; }
.menu__nav { display: grid; align-content: start; min-height: 0; overflow-y: auto; overscroll-behavior: contain; }
.menu__nav a {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-inv);
  text-decoration: none;
  opacity: 0;
  transform: translate3d(0, 22px, 0);
  transition: opacity .5s var(--ease-out), transform .5s var(--ease-out);
}
.menu.is-open .menu__nav a { opacity: 1; transform: none; }
.menu.is-open .menu__nav a:nth-child(1) { transition-delay: .18s; }
.menu.is-open .menu__nav a:nth-child(2) { transition-delay: .24s; }
.menu.is-open .menu__nav a:nth-child(3) { transition-delay: .3s; }
.menu.is-open .menu__nav a:nth-child(4) { transition-delay: .36s; }
.menu.is-open .menu__nav a:nth-child(5) { transition-delay: .42s; }
.menu.is-open .menu__nav a:nth-child(6) { transition-delay: .48s; }
.menu.is-open .menu__nav a:nth-child(7) { transition-delay: .54s; }
.menu__idx {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--red);
}
.menu__txt { font-size: clamp(2rem, 8.6vw, 3.2rem); font-weight: 700; letter-spacing: -.01em; line-height: 1.15; }
.menu__foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  padding-top: 22px;
  border-top: 1px solid var(--line-inv);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .38);
}

/* ── 6. 按钮 ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .03em;
  line-height: 1;
  text-decoration: none;
  border-radius: 999px;
  padding: 17px 34px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .35s var(--ease), background .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease);
}
.btn:active { transform: scale(.98); }

.btn--solid { background: var(--white); color: var(--ink); }
.btn--solid:hover { background: var(--red); color: #fff; }

.btn--ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .3); }
.btn--ghost:hover { background: rgba(255, 255, 255, .1); border-color: rgba(255, 255, 255, .55); }

.btn--lg { padding: 21px 40px; font-size: 16px; }

.btn--pill {
  padding: 12px 24px;
  font-size: 13px;
  background: var(--white);
  color: var(--ink);
}
.btn--pill:hover { background: var(--red); color: #fff; }
.nav.is-light .btn--pill { background: var(--ink); color: #fff; }
.nav.is-light .btn--pill:hover { background: var(--red); color: #fff; }

/* ── 7. 通用文本零件 ─────────────────────────────────────── */
.eyebrow {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--gray-50);
}
.eyebrow--center { text-align: center; }

.idx {
  display: inline-block;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--red);
  margin-bottom: 16px;
}

.caption {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gray-50);
}

.ticks { display: grid; gap: 12px; margin-top: 30px; }
.ticks li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--gray-70);
}
.ticks li::before {
  content: '';
  position: absolute;
  left: 0; top: .52em;
  width: 7px; height: 7px;
  background: var(--red);
}

.fineprint {
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--gray-50);
}

.secHead {
  display: flex;
  flex-direction: column;
  gap: 26px;
  margin-bottom: clamp(48px, 6vw, 84px);
}
.secHead__num {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  height: 26px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--gray-50);
}
.secHead__num--inv { border-color: var(--line-inv); color: rgba(255, 255, 255, .5); }
.secHead__t { font-size: clamp(1.8rem, 4.2vw, 3.6rem); letter-spacing: -.01em; }

/* ── 8. Hero ─────────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: #fff;
  padding-bottom: clamp(60px, 8vw, 110px);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(75% 55% at 80% 26%, rgba(224, 48, 30, .13), transparent 62%),
    radial-gradient(65% 55% at 6% 84%, rgba(255, 255, 255, .055), transparent 64%);
}
/* 指针光斑（深色区） */
.hero::after,
.philosophy::after,
.cta::after,
.lockscreen::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(320px circle at var(--sx, 50%) var(--sy, 40%), rgba(255, 255, 255, .055), transparent 72%);
  opacity: 0;
  transition: opacity .6s var(--ease);
}
.hero:hover::after,
.philosophy:hover::after,
.cta:hover::after,
.lockscreen:hover::after { opacity: 1; }

.hero__rail {
  position: absolute;
  left: clamp(4px, 1.2vw, 18px);
  bottom: 16vh;
  z-index: 2;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .26);
}

.hero__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(18px, 2.4vw, 32px);
  align-items: center;
  min-height: 100svh;
  padding-top: 132px;
  padding-bottom: 40px;
}
.hero__copy { grid-column: 1 / span 7; }

.hero__title {
  margin: 26px 0 0;
  font-size: clamp(2.85rem, 6.4vw, 6.5rem);
  line-height: 1.06;
  letter-spacing: -.01em;
}
.hero__title .u { position: relative; }
.hero__title .u::after {
  content: '';
  position: absolute;
  left: -.02em; right: -.02em; bottom: .04em;
  height: .055em;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left center;
}
.js .hero__title .u::after { transition: transform 1s var(--ease-out) .62s; }
.js body.is-ready .hero__title .u::after { transform: scaleX(1); }
.hero__title .dot { color: var(--red); }

.hero__en {
  margin-top: 22px;
  font-size: clamp(1rem, 1.5vw, 1.32rem);
  font-weight: 700;
  letter-spacing: .01em;
  color: rgba(255, 255, 255, .62);
}

.hero__sub {
  margin-top: 30px;
  max-width: 34em;
  font-size: clamp(.98rem, 1.45vw, 1.24rem);
  line-height: 1.9;
  color: rgba(255, 255, 255, .72);
}
.hero__sub em {
  font-style: normal;
  color: #fff;
  border-bottom: 2px solid var(--red);
  padding-bottom: 1px;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 42px; }

.hero__meta { display: flex; flex-wrap: wrap; gap: 12px 28px; margin-top: 46px; }
.hero__meta li {
  position: relative;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .42);
}
.hero__meta li + li::before {
  content: '';
  position: absolute;
  left: -14px; top: 50%;
  width: 1px; height: 11px;
  background: rgba(255, 255, 255, .2);
  transform: translateY(-50%);
}

.hero__devices {
  grid-column: 8 / -1;
  position: relative;
  display: flex;
  justify-content: center;
}
.hero__stage {
  position: relative;
  display: flex;
  justify-content: center;
  transform-style: preserve-3d;
  will-change: transform;
}
.hero__deviceNote {
  position: absolute;
  right: 0; bottom: 4%;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  line-height: 1.9;
  text-align: right;
  color: rgba(255, 255, 255, .35);
}

.hero__scroller {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .3);
}
.hero__scroller i {
  position: relative;
  width: 1px; height: 46px;
  background: rgba(255, 255, 255, .18);
  overflow: hidden;
}
.hero__scroller i::after {
  content: '';
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%; height: 40%;
  background: var(--red);
  animation: scrollHint 2.4s var(--ease) infinite;
}

/* 设备样机 */
.phone {
  position: relative;
  border-radius: 46px;
  padding: 10px;
  background: linear-gradient(150deg, #242424, #060606 55%);
  border: 1px solid rgba(255, 255, 255, .14);
  box-shadow: 0 46px 90px -34px rgba(0, 0, 0, .9);
}
.phone__screen {
  border-radius: 37px;
  overflow: hidden;
  aspect-ratio: 1256 / 2760;
  background: #000;
}
.phone__screen img {
  display: block;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: top center;
}
.phone--main {
  width: clamp(232px, 20vw, 292px);
  z-index: 2;
  transform: translate3d(calc(var(--px, 0) * 8px), calc(var(--py, 0) * 8px), 0);
}
.phone--peek {
  position: absolute;
  right: 2%; bottom: -8%;
  width: clamp(160px, 13.5vw, 200px);
  transform: rotate(7deg) translate3d(calc(var(--px, 0) * -18px), calc(var(--py, 0) * -18px), 0);
  opacity: .95;
  z-index: 1;
  box-shadow: 0 34px 70px -30px rgba(0, 0, 0, .9);
}

/* ── 9. 信任条 ───────────────────────────────────────────── */
.trust { padding: var(--sec-y) 0; background: var(--paper); }

.trust__statement {
  font-size: clamp(1.5rem, 3.4vw, 3rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -.01em;
  max-width: 20em;
}

.trust__cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: clamp(52px, 7vw, 92px);
  border-top: 1px solid var(--line);
}
.trust__col { padding: 34px 34px 0 0; border-right: 1px solid var(--line); }
.trust__col:last-child { border-right: 0; padding-right: 0; }
.trust__col:nth-child(n+2) { padding-left: 34px; }
.trust__col .idx { margin-bottom: 20px; }
.trust__col h3 { font-size: clamp(1.05rem, 1.5vw, 1.3rem); margin-bottom: 10px; }
.trust__col p { font-size: 14px; line-height: 1.7; color: var(--gray-70); }

/* ── 10. 功能区块 ────────────────────────────────────────── */
.features { padding: var(--sec-y) 0 0; background: var(--paper); }
.features .wrap { padding-bottom: 0; }

.feat {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(22px, 3vw, 52px);
  align-items: center;
  padding: clamp(56px, 6vw, 84px) 0;
  border-top: 1px solid var(--line);
}
.feat__copy { grid-column: 1 / span 5; }
.feat__viz  { grid-column: 7 / -1; }
.feat--flip .feat__copy { grid-column: 8 / -1; }
.feat--flip .feat__viz  { grid-column: 1 / span 6; }

.feat__copy h3 {
  font-size: clamp(1.55rem, 2.9vw, 2.5rem);
  line-height: 1.28;
  letter-spacing: -.01em;
}
.feat__copy > p {
  margin-top: 26px;
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--gray-70);
  max-width: 32em;
}

.feat__viz { position: relative; }

/* 4.1 金句卡（复刻 App 深色卡片） */
.quote {
  position: relative;
  border-radius: 28px;
  padding: clamp(28px, 3.2vw, 44px);
  background: var(--ink);
  color: #fff;
  box-shadow: 0 40px 80px -46px rgba(10, 10, 10, .8);
}
.quote__head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .45);
}
.quote__text {
  margin-top: 30px;
  font-size: clamp(1.14rem, 1.75vw, 1.55rem);
  line-height: 1.62;
  transition: opacity .4s var(--ease), transform .4s var(--ease);
}
.quote__text.is-out { opacity: 0; transform: translate3d(0, -10px, 0); }
.quote__text.is-enter { opacity: 0; transform: translate3d(0, 10px, 0); transition: none; }
.quote__kw {
  background-image: linear-gradient(var(--red), var(--red));
  background-repeat: no-repeat;
  background-position: left bottom;
  background-size: 100% 2px;
  padding-bottom: 1px;
}
.js .quote__kw { background-size: 0% 2px; }
.js .quote__text.is-fresh .quote__kw { animation: kwDraw .7s var(--ease-out) .18s both; }
@keyframes kwDraw { to { background-size: 100% 2px; } }
.quote__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 32px;
  padding-top: 22px;
  border-top: 1px solid var(--line-inv);
}
.quote__note {
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(255, 255, 255, .45);
  transition: color .35s var(--ease);
}
.quote__note.is-flash { color: var(--red); }
.quote__arrow {
  flex: 0 0 auto;
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .22);
  background: transparent;
  color: #fff;
  font-size: 17px;
  font-family: var(--font);
  cursor: pointer;
  transition: transform .4s var(--ease), background .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease);
}
.quote__arrow:hover {
  background: #fff;
  color: var(--ink);
  border-color: #fff;
  transform: translateX(4px);
}

/* 4.2 五种卡片样板 */
.specimen { display: grid; gap: 14px; }
.spec {
  position: relative;
  padding: 20px 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 20px;
}
.spec__tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gray-50);
  margin-bottom: 10px;
}
.spec__h { font-size: 15px; font-weight: 700; line-height: 1.45; }
.spec__m { display: block; margin-top: 8px; font-size: 11.5px; color: var(--gray-50); }

.specimen--a { }
.specimen--b { display: flex; align-items: center; gap: 18px; padding-right: 12px; }
.specimen--b .spec__body { flex: 1 1 auto; min-width: 0; }
.spec__img {
  flex: 0 0 auto;
  width: 84px; height: 84px;
  border-radius: 14px;
  overflow: hidden;
  background: var(--paper-2);
}
.spec__img img { width: 100%; height: 100%; object-fit: cover; display: block; }

.specimen--c { padding: 14px 14px 18px; }
.spec__bigimg {
  border-radius: 14px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  margin-bottom: 16px;
  background: var(--paper-2);
}
.spec__bigimg img { width: 100%; height: 100%; object-fit: cover; display: block; }
.specimen--c .spec__h { padding-inline: 8px; }

.specimen--d { padding: 14px 18px 18px; }
.spec__grouphead { display: flex; align-items: center; gap: 10px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.spec__logo { width: 18px; height: 18px; border-radius: 50%; background: var(--ink); }
.spec__gname { font-size: 12.5px; font-weight: 700; }
.spec__count {
  margin-left: auto;
  font-size: 10.5px; font-weight: 700;
  letter-spacing: .08em;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--gray-70);
}
.spec__list { margin-top: 12px; display: grid; gap: 0; }
.spec__list li { padding: 11px 0; border-bottom: 1px solid var(--line); font-size: 13.5px; line-height: 1.5; }
.spec__list li:last-child { border-bottom: 0; padding-bottom: 0; }

.specimen--e { background: var(--ink); border-color: var(--ink); color: #fff; }
.specimen--e .spec__tag { color: rgba(255, 255, 255, .45); }
.spec__quote { font-size: 17px; font-weight: 700; line-height: 1.55; }
.spec__quote::after { content: '。'; color: var(--red); }

/* 4.3 订阅源 */
.sources { display: grid; gap: 22px; }
.sources__field {
  position: relative;
  display: grid;
  gap: 10px;
  padding: 22px 24px 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r);
}
.sources__label {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gray-50);
}
.sources__input { font-size: clamp(1rem, 1.5vw, 1.28rem); font-weight: 700; }
.sources__input::after {
  content: '';
  display: inline-block;
  width: 2px; height: 1em;
  margin-left: 3px;
  vertical-align: -2px;
  background: var(--red);
  animation: caret 1.05s steps(1) infinite;
}
.sources__found {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--red);
  opacity: 0;
  transform: translate3d(0, 5px, 0);
  transition: opacity .55s var(--ease-out), transform .55s var(--ease-out);
}
.sources__field.is-done .sources__found { opacity: 1; transform: none; }

.marquee {
  overflow: hidden;
  border-block: 1px solid var(--line);
  padding: 18px 0;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
}
.marquee__track {
  display: flex;
  gap: 46px;
  width: max-content;
  white-space: nowrap;
  will-change: transform;
}
.marquee__track span {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gray-50);
}

.sources__opml { display: flex; align-items: center; gap: 14px; font-size: 13.5px; color: var(--gray-70); }
.chip {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .14em;
  padding: 5px 11px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
}

/* 4.4 实时活动 */
.lockscreen {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
  min-height: clamp(260px, 30vw, 340px);
  display: grid;
  align-content: center;
  justify-items: center;
  padding: clamp(38px, 5vw, 64px) 24px;
  background: #0b1020;
}
.lockscreen__wall {
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(45% 55% at 22% 28%, #2b6cff 0%, transparent 62%),
    radial-gradient(42% 52% at 80% 22%, #16c79a 0%, transparent 64%),
    radial-gradient(60% 70% at 54% 96%, #1b2a4a 0%, transparent 68%),
    #0b1020;
  filter: blur(34px) saturate(1.25);
  opacity: .85;
  animation: wallDrift 22s ease-in-out infinite alternate;
}
@keyframes wallDrift {
  0%   { transform: translate3d(-2%, 1%, 0) scale(1.02); }
  50%  { transform: translate3d(2%, -2%, 0) scale(1.06); }
  100% { transform: translate3d(1%, 2%, 0) scale(1.03); }
}
.activity {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 11px 26px 11px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .6);
  -webkit-backdrop-filter: blur(22px) saturate(1.6);
  backdrop-filter: blur(22px) saturate(1.6);
  border: 1px solid rgba(255, 255, 255, .55);
  box-shadow: 0 22px 44px -16px rgba(0, 0, 0, .55);
  color: var(--ink);
}
.activity__app {
  flex: 0 0 auto;
  width: 34px; height: 34px;
  border-radius: 11px;
  background: var(--ink);
  color: #fff;
  display: grid;
  place-content: center;
  font-weight: 700;
  font-size: 16px;
}
.activity__text { display: grid; gap: 3px; font-size: 15px; font-weight: 700; line-height: 1.25; white-space: nowrap; }
.activity__l2 { color: var(--gray-70); font-size: 13.5px; }

.lockscreen__bar {
  position: relative;
  z-index: 2;
  width: min(300px, 74%);
  height: 3px;
  margin-top: 30px;
  border-radius: 2px;
  background: rgba(255, 255, 255, .25);
  overflow: hidden;
}
.lockscreen__bar i {
  display: block;
  height: 100%;
  width: 100%;
  border-radius: 2px;
  background: #fff;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 1.9s var(--ease-out);
}

/* ── 11. 设计哲学 ─────────────────────────────────────────── */
.philosophy {
  position: relative;
  background: var(--ink);
  color: #fff;
  padding: var(--sec-y) 0;
}
.philosophy .secHead__num { display: inline-flex; margin-bottom: 30px; }
.philosophy h2 {
  font-size: clamp(2rem, 5.2vw, 4.4rem);
  letter-spacing: -.015em;
  max-width: 14em;
}
.philosophy__body { margin-top: clamp(44px, 6vw, 76px); max-width: 46em; }
.philosophy__body p {
  font-size: clamp(1.02rem, 1.5vw, 1.3rem);
  line-height: 2;
  color: rgba(255, 255, 255, .7);
}
.philosophy__body p + p { margin-top: 26px; }
.philosophy__body .lead {
  font-size: clamp(1.25rem, 2.1vw, 1.9rem);
  line-height: 1.6;
  color: #fff;
  max-width: 22em;
}
.philosophy__body del {
  color: #63635f;
  text-decoration: none;
  background-image: linear-gradient(var(--red), var(--red));
  background-repeat: no-repeat;
  background-position: left 58%;
  background-size: var(--strike, 100%) 2px;
}
.philosophy__en {
  margin-top: clamp(48px, 6vw, 78px) !important;
  padding-top: 34px;
  border-top: 1px solid var(--line-inv);
  font-weight: 700;
  font-size: clamp(.78rem, 1.05vw, .95rem) !important;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .42) !important;
  line-height: 2.4 !important;
}
.philosophy__en b {
  display: inline-block;
  margin-top: 6px;
  font-size: 1.9em;
  letter-spacing: .01em;
  text-transform: none;
  line-height: 1.3;
  color: #fff;
}

/* ── 12. 适合人群 ────────────────────────────────────────── */
.audience { padding: var(--sec-y) 0; background: var(--paper); }

.audience__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
}
.audience__item { position: relative; padding: 36px 34px 44px; border-right: 1px solid var(--line); }
.audience__item:last-child { border-right: 0; }
.audience__item::before {
  content: '';
  position: absolute;
  left: 0; top: 0;
  width: 2px; height: 100%;
  background: var(--red);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .6s var(--ease-out);
}
.audience__item:hover::before { transform: scaleY(1); }
.audience__item .idx { margin-bottom: 22px; }
.audience__item h3 { font-size: clamp(1.05rem, 1.5vw, 1.32rem); margin-bottom: 12px; transition: color .35s var(--ease); }
.audience__item:hover h3 { color: var(--red-deep); }
.audience__item p { font-size: 14px; line-height: 1.8; color: var(--gray-70); }

/* ── 13. FAQ ─────────────────────────────────────────────── */
.faq { padding: var(--sec-y) 0; background: var(--paper); }
.faq__grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(22px, 3vw, 44px);
}
.faq__head { grid-column: 1 / span 4; }
.faq__head h2 { font-size: clamp(1.8rem, 3.4vw, 3rem); letter-spacing: -.01em; }
.faq__list { grid-column: 6 / -1; }

.qa { border-top: 1px solid var(--line); }
.qa:last-child { border-bottom: 1px solid var(--line); }
.qa summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 26px 0;
  cursor: pointer;
  list-style: none;
}
.qa summary::-webkit-details-marker { display: none; }
.qa__q { font-size: clamp(1rem, 1.32vw, 1.18rem); font-weight: 700; line-height: 1.5; }
.qa__sign { position: relative; flex: 0 0 auto; width: 15px; height: 15px; }
.qa__sign::before, .qa__sign::after {
  content: '';
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: 1.5px;
  background: var(--ink);
  transition: transform .4s var(--ease), background .3s var(--ease);
}
.qa__sign::after { transform: rotate(90deg); }
.qa summary:hover .qa__sign::before,
.qa summary:hover .qa__sign::after { background: var(--red); }
.qa[open] .qa__sign::after { transform: rotate(0deg); }
.qa[open] .qa__q { color: var(--red-deep); }

.qa__a { max-width: 54em; overflow: hidden; }
.js .qa__a { height: 0; transition: height .5s var(--ease-out); }
.qa__a p { padding-bottom: 26px; font-size: 15px; line-height: 1.95; color: var(--gray-70); }

/* ── 14. 下载 CTA ────────────────────────────────────────── */
.cta {
  position: relative;
  background: var(--ink);
  color: #fff;
  text-align: center;
  padding: clamp(96px, 13vw, 190px) 0 clamp(84px, 10vw, 140px);
}
.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(58% 46% at 50% 34%, rgba(224, 48, 30, .16), transparent 66%);
}
.cta .wrap { position: relative; z-index: 2; }
.cta .eyebrow { color: rgba(255, 255, 255, .38); }

.cta__title {
  margin-top: 30px;
  font-size: clamp(2.3rem, 7vw, 5.8rem);
  line-height: 1.13;
  letter-spacing: -.015em;
}

.cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: clamp(44px, 5vw, 66px);
}
.cta__gplay {
  display: block;
  aspect-ratio: 3.6 / 1;
  width: clamp(196px, 21vw, 262px);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.cta__gplay:hover { transform: translateY(-2px); box-shadow: 0 18px 40px -18px rgba(0, 0, 0, .8); }
.cta__gplay img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center; }

.cta__small {
  margin-top: 44px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .42);
}

/* ── 15. 页脚 ────────────────────────────────────────────── */
.footer {
  background: var(--paper);
  padding: clamp(56px, 7vw, 92px) 0 clamp(36px, 4vw, 52px);
}
.footer__grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 28px 24px;
}
.footer__brand { grid-column: 1 / span 4; }
.footer__brand p { font-size: 13.5px; color: var(--gray-70); }

.footer__links {
  grid-column: 7 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  justify-content: flex-end;
  align-content: flex-start;
}
.footer__links a {
  font-size: 13px;
  text-decoration: none;
  color: var(--gray-70);
  transition: color .3s var(--ease);
}
.footer__links a:hover { color: var(--red); }

.footer__copy {
  grid-column: 1 / -1;
  margin-top: clamp(30px, 4vw, 48px);
  padding-top: 26px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--gray-50);
}

.footer__giant {
  display: block;
  margin-top: clamp(34px, 5vw, 64px);
  font-family: var(--font-logo);
  font-weight: 700;
  font-size: clamp(4.4rem, 16.4vw, 16rem);
  line-height: .82;
  letter-spacing: .015em;
  color: var(--ink);
  opacity: .09;
  white-space: nowrap;
  overflow: hidden;
  user-select: none;
  will-change: transform;
}

/* ── 16. 动效 ────────────────────────────────────────────── */

/* 16.1 片头揭幕 */
.intro {
  position: fixed;
  inset: 0;
  z-index: 95;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: #fff;
  pointer-events: none;
}
.intro__core { display: grid; justify-items: center; gap: 16px; }
.intro__logo {
  font-family: var(--font-logo);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: .42em;
  padding-left: .42em;
  opacity: 0;
  animation: introLogo .9s var(--ease-out) .06s forwards;
}
.intro__bar { display: block; width: 148px; height: 1px; background: rgba(255, 255, 255, .16); overflow: hidden; }
.intro__bar i {
  display: block;
  width: 100%; height: 100%;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left center;
  animation: introBar .95s var(--ease-out) .1s forwards;
}
.intro__tag {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .4);
  opacity: 0;
  animation: fadeIn .7s var(--ease-out) .28s forwards;
}
html.js .intro { animation: introOut .8s var(--ease-io) .76s forwards; }

@keyframes introLogo { from { opacity: 0; letter-spacing: .62em; } to { opacity: 1; letter-spacing: .42em; } }
@keyframes introBar { to { transform: scaleX(1); } }
@keyframes introOut { to { transform: translate3d(0, -100%, 0); } }

/* 16.2 阅读准星 */
.cursor {
  position: fixed;
  top: 0; left: 0;
  z-index: 100;
  width: 0; height: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity .35s var(--ease);
}
.cursor.is-on { opacity: 1; }
.cursor__ring {
  position: absolute;
  top: 0; left: 0;
  width: 30px; height: 30px;
  margin: -15px 0 0 -15px;
  border-radius: 50%;
  border: 1px solid rgba(224, 48, 30, .55);
  transition: transform .45s var(--ease-out), background .35s var(--ease), border-color .35s var(--ease);
}
.cursor__dot {
  position: absolute;
  top: 0; left: 0;
  width: 5px; height: 5px;
  margin: -2.5px 0 0 -2.5px;
  border-radius: 50%;
  background: var(--red);
  transition: transform .35s var(--ease-out), opacity .3s var(--ease);
}
.cursor.is-lg .cursor__ring {
  transform: scale(2.15);
  background: rgba(224, 48, 30, .06);
  border-color: rgba(224, 48, 30, .3);
}
.cursor.is-lg .cursor__dot { transform: scale(.45); opacity: .7; }
html.has-cursor,
html.has-cursor a,
html.has-cursor button,
html.has-cursor summary,
html.has-cursor img { cursor: none; }
@media (hover: none) { .cursor { display: none; } }

/* 16.3 分字揭示 */
[data-split] .ch,
[data-split] .wd {
  display: inline-block;
  overflow: hidden;
  vertical-align: top;
  padding-bottom: .16em;
  margin-bottom: -.16em;
}
.js [data-split] .ch__i,
.js [data-split] .wd__i {
  display: inline-block;
  transform: translate3d(0, 112%, 0);
  opacity: 0;
  transition: transform .95s var(--ease-out), opacity .8s var(--ease-out);
  will-change: transform;
}
.js [data-split].is-in .ch__i,
.js [data-split].is-in .wd__i { transform: none; opacity: 1; }

.hero__caret {
  display: inline-block;
  width: .055em;
  height: .82em;
  margin-left: .09em;
  vertical-align: -.04em;
  background: var(--red);
  opacity: 0;
}
.js body.is-ready .hero__caret { animation: caret 1.15s steps(1) .95s infinite; }

/* 16.4 首屏入场 */
.js .hero [data-rise] {
  opacity: 0;
  transform: translate3d(0, 26px, 0);
  transition: opacity .9s var(--ease-out), transform .9s var(--ease-out);
  transition-delay: var(--d, 0s);
}
.js body.is-ready .hero [data-rise] { opacity: 1; transform: none; }

.js .hero__devices {
  opacity: 0;
  transform: translate3d(0, 46px, 0) scale(.95);
  transition: opacity 1.15s var(--ease-out) .22s, transform 1.15s var(--ease-out) .22s;
}
.js body.is-ready .hero__devices { opacity: 1; transform: none; }

/* 16.5 滚动揭示 */
.reveal {
  opacity: 0;
  transform: translate3d(0, 28px, 0);
  transition: opacity .95s var(--ease-out), transform .95s var(--ease-out);
  transition-delay: var(--d, 0s);
}
.reveal.is-in { opacity: 1; transform: none; }

/* 16.6 卡片错落 */
.js [data-stagger] > * {
  opacity: 0;
  transform: translate3d(0, 38px, 0) scale(.975);
  transition: opacity .8s var(--ease-out), transform .8s var(--ease-out),
              box-shadow .45s var(--ease-out), border-color .45s var(--ease);
  transition-delay: calc(var(--i, 0) * 90ms);
}
.js [data-stagger].is-in > * { opacity: 1; transform: none; }
.js [data-stagger].is-in > *:hover { transform: translate3d(0, -5px, 0); }

.spec__img img,
.spec__bigimg img { transition: transform .85s var(--ease-out); }
.spec:hover .spec__img img,
.spec:hover .spec__bigimg img { transform: scale(1.07); }

/* 16.7 氛围 */
.grain { animation: grainShift 1.4s steps(6) infinite; }
@keyframes grainShift {
  0%   { background-position: 0 0; }
  16%  { background-position: -22px 14px; }
  33%  { background-position: 16px -18px; }
  50%  { background-position: -14px -12px; }
  66%  { background-position: 20px 16px; }
  83%  { background-position: -18px 20px; }
  100% { background-position: 0 0; }
}

@keyframes caret { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }
@keyframes fadeIn { to { opacity: 1; } }
@keyframes scrollHint { 0% { transform: translateY(-100%); } 100% { transform: translateY(250%); } }

/* ── 17. 响应式 ──────────────────────────────────────────── */
@media (max-width: 1180px) {
  .rules { display: none; }
  .hero__rail { display: none; }
  .hero__copy { grid-column: 1 / span 7; }
  .hero__devices { grid-column: 8 / -1; }
}

@media (max-width: 1024px) {
  :root { --sec-y: clamp(64px, 9vw, 110px); }

  .hero__grid {
    grid-template-columns: 1fr;
    align-items: start;
    min-height: 0;
    padding-top: 120px;
    gap: 52px;
  }
  .hero__copy, .hero__devices { grid-column: 1 / -1; }
  .hero__devices { justify-content: flex-start; }
  .phone--peek { right: 4%; bottom: -6%; }
  .hero__deviceNote { right: auto; left: 78%; }

  .trust__cols { grid-template-columns: 1fr; }
  .trust__col {
    padding: 30px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .trust__col:last-child { border-bottom: 0; }
  .trust__col:nth-child(n+2) { padding-left: 0; }

  .feat { grid-template-columns: 1fr; gap: 44px; padding: clamp(48px, 7vw, 72px) 0; }
  .feat__copy, .feat__viz,
  .feat--flip .feat__copy, .feat--flip .feat__viz { grid-column: 1 / -1; }
  .feat--flip .feat__viz { order: 2; }

  .audience__grid { grid-template-columns: repeat(2, 1fr); }
  .audience__item:nth-child(2n) { border-right: 0; }
  .audience__item:nth-child(n+3) { border-top: 1px solid var(--line); }

  .faq__head, .faq__list { grid-column: 1 / -1; }
  .faq__head { margin-bottom: 34px; }

  .footer__brand { grid-column: 1 / -1; }
  .footer__links { grid-column: 1 / -1; justify-content: flex-start; }
}

/* 六个导航项 + 下载按钮在中等宽度下需要收紧，避免挤压 */
@media (max-width: 900px) {
  .nav__menu { gap: 22px; }
  .nav__menu a { font-size: 13px; }
  .nav__end .btn--pill { padding: 10px 16px; font-size: 12px; }
}

@media (max-width: 720px) {
  .nav__menu { display: none; }
  .nav__inner { height: 68px; }
  .nav__burger { display: block; }
  .menu { display: grid; }

  .hero__title { font-size: clamp(2.7rem, 12vw, 4rem); }
  .hero__meta { gap: 10px 22px; }
  .hero__meta li + li::before { left: -12px; }
  .phone--main { width: min(268px, 74vw); }
  .footer__giant { font-size: clamp(4rem, 21vw, 9rem); }

  .audience__grid { grid-template-columns: 1fr; }
  .audience__item { border-right: 0; border-bottom: 1px solid var(--line); padding: 30px 0 34px; }
  .audience__item:last-child { border-bottom: 0; }

  .specimen--b { flex-direction: column; align-items: stretch; }
  .spec__img { width: 100%; height: 132px; }

  .cta__actions { flex-direction: column; }
  .btn--lg { width: 100%; }
}

@media (max-width: 460px) {
  .nav__end .btn--pill { display: none; }
}

/* ── 17.5 字符场 ─────────────────────────────────────────── */
.glyphfield {
  position: relative;
  height: clamp(340px, 36vw, 540px);
  background: var(--paper);
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.glyphfield__canvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}
.glyphfield__label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.glyphfield__intent {
  font-family: var(--font);
  font-weight: 700;
  font-size: clamp(2.75rem, 8.6vw, 7.2rem);
  letter-spacing: -.035em;
  line-height: .95;
  color: var(--ink);
}
.glyphfield__read {
  margin-left: .22em;
  font-family: 'Iowan Old Style', 'Palatino Linotype', 'Book Antiqua', Georgia, 'Times New Roman', serif;
  font-style: italic;
  font-weight: 700;
  font-size: clamp(2.9rem, 9.2vw, 7.6rem);
  letter-spacing: -.02em;
  line-height: .95;
  color: var(--red);
  transform: translateY(.02em);
}

@media (max-width: 720px) {
  .glyphfield { height: clamp(240px, 46vw, 340px); }
  .glyphfield__intent { font-size: clamp(1.9rem, 9vw, 2.8rem); }
  .glyphfield__read { font-size: clamp(2rem, 9.4vw, 2.9rem); }
}

/* ── 18. 无障碍 / 降低动效 ───────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .intro, .cursor { display: none !important; }
  .reveal, .hero .reveal, [data-stagger] > * { opacity: 1; transform: none; }
  .js [data-split] .ch__i,
  .js [data-split] .wd__i { opacity: 1; transform: none; }
  .js .hero [data-rise], .js .hero__devices { opacity: 1; transform: none; }
  .hero__title .u::after { transform: scaleX(1); }
  .marquee__track { animation: none; }
  .philosophy__body del { --strike: 100%; }
  .qa__a { height: auto; }
  .js .qa__a { height: auto; }
}

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