/* ============================================================
   SEVEN C 官网样式表
   设计风格:mobbin.com 灵感的暗色调极简风
   - 背景: 纯黑系 (#0A0A0A / #141414 卡片)
   - 边框: rgba(255,255,255,0.08)
   - 字体: Inter + 系统中文回退
   - 强调色: 暖橙 #FF6B35
   - 圆角: 12px (卡片) / 999px (按钮)
   ============================================================ */

* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0A0A0A;
  --bg-elev: #141414;
  --bg-card: #1B1B1B;
  --bg-card-hover: #232323;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #FFFFFF;
  --text-mute: rgba(255, 255, 255, 0.62);
  --text-faint: rgba(255, 255, 255, 0.42);
  --accent: #FF6B35;
  --accent-hover: #FF8557;
  --accent-soft: rgba(255, 107, 53, 0.12);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 8px 24px rgba(0, 0, 0, 0.45);
  --max-w: 1280px;
  /* cursor.com 版式 token(实测) */
  --site-container: 1300px;
  --site-gutter: 20px;
  --site-header-h: 52px;
  --hero-demo-ratio: 1300 / 756;
  --feature-card-ratio: 1300 / 715;
  --section-pad-y: 67px;
  --section-pad-top: 112px;
}

html, body {
  /* 2026-05-25 v0.9 整页连贯:统一 #0A0A0A 底,仅页脚顶部分隔线;区块不再各用渐变/横线切块 */
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.005em;
}

.site-cursor {
  --cursor-x: 50vw;
  --cursor-y: 32vh;
  background:
    radial-gradient(circle at var(--cursor-x) var(--cursor-y), rgba(255, 107, 53, 0.11), transparent 34vw),
    #050505;
}

.site-cursor::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.32;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(circle at 50% 12%, #000 0, transparent 62%);
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ============================ NAV ============================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.site-container {
  max-width: var(--site-container);
  margin: 0 auto;
  padding: 0 var(--site-gutter);
  width: 100%;
  box-sizing: border-box;
}
.nav-inner {
  max-width: var(--site-container);
  margin: 0 auto;
  padding: 0 var(--site-gutter);
  min-height: var(--site-header-h);
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
/* 一体标：透明 PNG，深色主站顶部/页脚反白显示。 */
.brand-logo {
  display: block;
  height: 28px;
  width: auto;
  max-width: min(220px, 40vw);
  object-fit: contain;
  filter: invert(1);
}
.brand-logo--footer {
  height: 38px;
  max-width: 240px;
}
.nav-links {
  display: flex;
  gap: 28px;
  flex: 1;
  margin-left: 12px;
}
.nav-links a {
  font-size: 14px;
  color: var(--text-mute);
  font-weight: 500;
  transition: color 0.18s;
}
.nav-links a:hover { color: var(--text); }
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ============================ BUTTONS ============================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: background 0.18s, border-color 0.18s, transform 0.06s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.btn-primary:hover { background: #f0f0f0; border-color: #f0f0f0; }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.32); }
.btn-lg {
  padding: 13px 24px;
  font-size: 15px;
}

/* ============================ HERO (左文案 + 右画廊词卡) ============================ */
.hero-canvas {
  min-height: auto;
  padding: clamp(72px, 9vh, 132px) var(--site-gutter) clamp(56px, 8vh, 96px);
  background:
    radial-gradient(ellipse 50% 40% at 18% 12%, rgba(255, 107, 53, 0.16), transparent 66%),
    radial-gradient(ellipse 46% 38% at 88% 86%, rgba(255, 255, 255, 0.045), transparent 70%);
}
.hero-canvas__grid {
  position: relative;
  z-index: 1;
  max-width: var(--site-container);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: center;
}
.hero-canvas__copy {
  max-width: 560px;
}
.hero-canvas .hero-kicker {
  display: inline-flex;
  margin-bottom: 22px;
  padding: 7px 12px;
  border: 1px solid rgba(255, 107, 53, 0.26);
  border-radius: 999px;
  background: rgba(255, 107, 53, 0.07);
  color: rgba(255, 194, 164, 0.9);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
}
.hero-canvas__title {
  font-size: clamp(26px, 3vw, 44px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 0 0 22px;
}
.hero-canvas__title .hero-title-accent {
  display: inline-block;
  color: var(--accent);
  font-weight: 820;
  background: none;
  -webkit-text-fill-color: currentColor;
}
.hero-canvas__lead {
  max-width: 480px;
  margin: 0 0 28px;
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.8;
  color: var(--text-mute);
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}
.hero-tags span {
  padding: 7px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-mute);
  font-size: 12px;
}
/* 右侧:上方演示视频 + 下方一排切换按钮 */
.hero-canvas__media {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
  min-width: 0;
}
.hero-tab-stage {
  position: relative;
  width: 100%;
  /* 与 assets/1|2|3.png 一致: 2560×1400, 不额外拉高竖向 */
  aspect-ratio: 2560 / 1400;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 26px;
  background:
    radial-gradient(circle at 22% 18%, rgba(255, 107, 53, 0.18), transparent 32%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.018)),
    #111;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.06) inset,
    0 32px 80px rgba(0, 0, 0, 0.48);
}
.hero-tab-stage::before,
.hero-tab-stage::after {
  content: "";
  position: absolute;
  pointer-events: none;
}
.hero-tab-stage::before {
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.22), transparent 18%, transparent 62%, rgba(0, 0, 0, 0.55));
}
.hero-tab-stage::after {
  inset: 0;
  z-index: 3;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: inherit;
  pointer-events: none;
}
.hero-tab-slide {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  object-position: center;
  background: transparent;
  opacity: 1;
  transition: opacity 0.42s ease;
}
.hero-tab-slide.is-fading {
  opacity: 0;
}
.hero-tab-caption {
  position: absolute;
  left: 22px;
  top: 22px;
  z-index: 4;
  padding: 6px 10px;
  border: 1px solid rgba(255, 107, 53, 0.32);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.42);
  -webkit-backdrop-filter: blur(8px);
          backdrop-filter: blur(8px);
  color: rgba(255, 194, 164, 0.92);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
}
.hero-tab-desc {
  position: absolute;
  left: 22px;
  right: 28%;
  bottom: 22px;
  z-index: 4;
  margin: 0;
  color: rgba(255, 255, 255, 0.74);
  font-size: 14px;
  line-height: 1.7;
  text-wrap: balance;
}
.hero-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
/* 下方三项切换:轻量胶片导航,不再挤压说明文案 */
.hero-tab {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: end;
  column-gap: 8px;
  row-gap: 2px;
  position: relative;
  min-height: 70px;
  padding: 13px 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.065), rgba(255, 255, 255, 0.015)),
    rgba(24, 24, 24, 0.84);
  text-align: left;
  overflow: hidden;
  cursor: pointer;
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.24);
  transition: border-color 0.2s, transform 0.2s, background 0.2s, box-shadow 0.2s;
}
.hero-tab:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.24);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.085), rgba(255, 255, 255, 0.02)),
    rgba(28, 28, 28, 0.92);
}
.hero-tab.is-active {
  border-color: rgba(255, 107, 53, 0.55);
  box-shadow:
    0 0 0 1px rgba(255, 107, 53, 0.25),
    0 18px 34px rgba(0, 0, 0, 0.32);
}
.hero-tab.is-active::before {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  top: 0;
  height: 2px;
  border-radius: 999px;
  background: var(--accent);
}
.hero-tab__num {
  grid-row: 1 / 3;
  color: rgba(255, 107, 53, 0.82);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}
.hero-tab__label {
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  font-weight: 700;
}
.hero-tab__en {
  position: absolute;
  right: 12px;
  bottom: 8px;
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  font-size: clamp(21px, 2.1vw, 32px);
  line-height: 1;
  color: rgba(255, 255, 255, 0.12);
  pointer-events: none;
}
.hero-tab.is-active .hero-tab__en {
  color: rgba(255, 107, 53, 0.38);
}

@media (min-width: 1200px) {
  .hero-canvas__grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  }
}

/* ============================ ACTIVE THEORY INSPIRED HOME ============================ */
.at-hero {
  position: relative;
  min-height: calc(100svh - var(--site-header-h));
  display: grid;
  place-items: center;
  padding: clamp(72px, 10vh, 140px) var(--site-gutter);
  background: transparent;
}
/* 整页活背景:固定铺满视口的 WebGL 场景,内容浮在其上 */
.at-gl {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100vw;
  height: 100svh;
  display: block;
  pointer-events: none;
}
/* 降级兜底:WebGL 不可用时显示的静态氛围层 */
.at-gl-fallback {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 62% 46%, rgba(255, 107, 53, 0.22), transparent 38%),
    radial-gradient(circle at 38% 64%, rgba(139, 92, 246, 0.18), transparent 42%),
    radial-gradient(ellipse 60% 50% at 50% 50%, rgba(255, 255, 255, 0.05), transparent 64%),
    #010101;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.at-gl-off .at-gl-fallback { opacity: 1; }
/* 让首屏 + 叙事段落浮在活背景之上 */
.at-hero__copy,
.at-scroll-cue,
.at-story { position: relative; z-index: 2; }
/* 活背景只覆盖顶部两屏;以下区块用不透明底盖住固定画布 */
.section-float,
.section-marquee,
.cta,
.footer {
  position: relative;
  z-index: 2;
  background: var(--bg);
}
.at-noise {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.22;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(circle at 50% 50%, #000 0, transparent 68%);
}
.at-particles {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.at-particles span {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: var(--s);
  height: var(--s);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(255,255,255,0.9), rgba(255,107,53,0.48) 36%, transparent 72%);
  filter: blur(var(--b, 0px));
  opacity: var(--o, 0.42);
  animation: particleFloat var(--d, 9s) ease-in-out infinite alternate;
}
.at-particles span:nth-child(1) { --x: 12%; --y: 18%; --s: 2px; --d: 8s; }
.at-particles span:nth-child(2) { --x: 18%; --y: 68%; --s: 4px; --d: 11s; --o: 0.62; }
.at-particles span:nth-child(3) { --x: 28%; --y: 32%; --s: 3px; --d: 10s; }
.at-particles span:nth-child(4) { --x: 36%; --y: 76%; --s: 2px; --d: 12s; }
.at-particles span:nth-child(5) { --x: 42%; --y: 20%; --s: 5px; --d: 9s; --b: 1px; }
.at-particles span:nth-child(6) { --x: 49%; --y: 58%; --s: 2px; --d: 7s; }
.at-particles span:nth-child(7) { --x: 57%; --y: 25%; --s: 3px; --d: 13s; }
.at-particles span:nth-child(8) { --x: 63%; --y: 72%; --s: 5px; --d: 8s; --o: 0.56; }
.at-particles span:nth-child(9) { --x: 71%; --y: 44%; --s: 2px; --d: 10s; }
.at-particles span:nth-child(10) { --x: 82%; --y: 24%; --s: 4px; --d: 12s; --b: 0.6px; }
.at-particles span:nth-child(11) { --x: 86%; --y: 70%; --s: 3px; --d: 9s; }
.at-particles span:nth-child(12) { --x: 74%; --y: 84%; --s: 2px; --d: 11s; }
.at-particles span:nth-child(13) { --x: 21%; --y: 48%; --s: 2px; --d: 10s; }
.at-particles span:nth-child(14) { --x: 31%; --y: 14%; --s: 3px; --d: 8s; }
.at-particles span:nth-child(15) { --x: 53%; --y: 87%; --s: 4px; --d: 12s; }
.at-particles span:nth-child(16) { --x: 67%; --y: 12%; --s: 2px; --d: 9s; }
.at-particles span:nth-child(17) { --x: 91%; --y: 39%; --s: 3px; --d: 10s; }
.at-particles span:nth-child(18) { --x: 8%; --y: 82%; --s: 5px; --d: 13s; --b: 1px; }
.at-light-ribbons {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.at-light-ribbons span {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(74vw, 860px);
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.8), rgba(255,107,53,0.5), transparent);
  filter: blur(1px);
  opacity: 0.28;
  transform: translate(-50%, -50%) rotate(var(--r)) translateX(var(--tx));
  animation: ribbonSweep var(--d) ease-in-out infinite alternate;
}
.at-light-ribbons span:nth-child(1) { --r: -34deg; --tx: 0; --d: 8s; }
.at-light-ribbons span:nth-child(2) { --r: 22deg; --tx: 16vw; --d: 10s; opacity: 0.18; }
.at-light-ribbons span:nth-child(3) { --r: 68deg; --tx: -14vw; --d: 11s; opacity: 0.16; }
.at-orbit {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}
.at-orbit span {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(72vw, 820px);
  aspect-ratio: 1;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 50%;
  transform: translate(-50%, -50%) rotateX(68deg) rotateZ(var(--r, 0deg));
  box-shadow: 0 0 120px rgba(255, 107, 53, 0.05) inset;
}
.at-orbit span:nth-child(1) { --r: -8deg; }
.at-orbit span:nth-child(2) { --r: 22deg; width: min(86vw, 980px); opacity: 0.55; }
.at-orbit span:nth-child(3) { --r: -34deg; width: min(58vw, 660px); opacity: 0.75; }
@keyframes particleFloat {
  from { transform: translate3d(-18px, 14px, 0) scale(0.75); opacity: calc(var(--o, 0.42) * 0.55); }
  to { transform: translate3d(26px, -30px, 0) scale(1.25); opacity: var(--o, 0.42); }
}
@keyframes ribbonSweep {
  from { transform: translate(-50%, -50%) rotate(var(--r)) translateX(calc(var(--tx) - 6vw)); }
  to { transform: translate(-50%, -50%) rotate(var(--r)) translateX(calc(var(--tx) + 8vw)); }
}
.glass-logo {
  position: absolute;
  left: 58%;
  top: 50%;
  z-index: 4;
  width: clamp(280px, 35vw, 560px);
  aspect-ratio: 1;
  transform:
    translate3d(-50%, -50%, 0)
    rotateX(var(--glass-rx, 0deg))
    rotateY(var(--glass-ry, 0deg))
    scale(var(--glass-scale, 1));
  transform-style: preserve-3d;
  transition: transform 0.18s ease-out;
  pointer-events: none;
}
.glass-logo__halo {
  position: absolute;
  inset: -20%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 48% 44%, rgba(255,255,255,0.2), transparent 22%),
    radial-gradient(circle, rgba(255,107,53,0.22), transparent 58%);
  filter: blur(18px);
  opacity: 0.9;
}
.glass-logo__body {
  position: absolute;
  inset: 8%;
  display: flex;
  flex-direction: column;
  place-items: center;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 50%;
  background:
    linear-gradient(140deg, rgba(255,255,255,0.22), rgba(255,255,255,0.035) 42%, rgba(255,107,53,0.12)),
    rgba(255,255,255,0.03);
  -webkit-backdrop-filter: blur(18px) saturate(145%);
          backdrop-filter: blur(18px) saturate(145%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.36),
    inset 0 -42px 90px rgba(255,107,53,0.08),
    0 40px 160px rgba(0,0,0,0.72);
  overflow: hidden;
}
.glass-logo__body::before {
  content: "";
  position: absolute;
  inset: -45%;
  background: linear-gradient(115deg, transparent 0 38%, rgba(255,255,255,0.55) 46%, transparent 54%);
  transform: translateX(var(--shine-x, -24%)) rotate(8deg);
  opacity: 0.55;
}
.glass-logo__mark {
  position: relative;
  z-index: 1;
  color: transparent;
  background:
    linear-gradient(145deg, rgba(255,255,255,0.98), rgba(255,255,255,0.28) 44%, rgba(255,107,53,0.72));
  -webkit-background-clip: text;
          background-clip: text;
  font-size: clamp(72px, 9vw, 138px);
  font-weight: 850;
  line-height: 0.82;
  letter-spacing: -0.11em;
  text-shadow:
    0 1px 0 rgba(255,255,255,0.42),
    0 28px 46px rgba(0,0,0,0.6);
}
.glass-logo__name {
  position: relative;
  z-index: 1;
  padding: 7px 12px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px;
  background: rgba(0,0,0,0.22);
  color: rgba(255,255,255,0.72);
  font-size: clamp(10px, 1.1vw, 14px);
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.18);
}
.at-hero__copy {
  position: relative;
  z-index: 3;
  width: min(var(--site-container), 100%);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 26px;
  pointer-events: none;
}
.at-kicker {
  width: fit-content;
  padding: 8px 12px;
  border: 1px solid rgba(255,107,53,0.28);
  border-radius: 999px;
  background: rgba(255,107,53,0.07);
  color: #ffb08e;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.at-hero h1 {
  position: relative;
  z-index: 1;
  max-width: 9.5em;
  margin: 0;
  font-size: clamp(54px, 8.4vw, 132px);
  line-height: 0.88;
  letter-spacing: -0.075em;
  font-weight: 820;
  text-shadow: 0 8px 60px rgba(0, 0, 0, 0.65);
}
.at-hero h1 span {
  display: inline-block;
  color: transparent;
  background: linear-gradient(120deg, #fff 0%, #ff6b35 42%, #8b5cf6 100%);
  -webkit-background-clip: text;
          background-clip: text;
}
.at-hero p {
  position: relative;
  z-index: 5;
  max-width: 480px;
  margin: 0;
  color: rgba(255,255,255,0.72);
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.8;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.7);
  pointer-events: auto;
}
.at-actions {
  position: relative;
  z-index: 5;
  display: flex;
  justify-content: flex-start;
  gap: 10px;
  margin: 0;
  pointer-events: auto;
}
.at-scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 26px;
  z-index: 3;
  display: grid;
  gap: 9px;
  place-items: center;
  color: rgba(255,255,255,0.44);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.at-scroll-cue i {
  width: 1px;
  height: 54px;
  background: linear-gradient(180deg, rgba(255,255,255,0.6), transparent);
  animation: cueDrop 1.8s ease-in-out infinite;
}
@keyframes cueDrop {
  0%, 100% { transform: scaleY(0.4); transform-origin: top; opacity: 0.45; }
  50% { transform: scaleY(1); opacity: 1; }
}

.at-story {
  position: relative;
  max-width: var(--site-container);
  margin: 0 auto;
  padding: clamp(60px, 10vw, 140px) var(--site-gutter);
}
/* 顶/底渐隐,把活背景与下方不透明区块自然衔接 */
.at-story::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 220px;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, var(--bg));
}
.at-story__visual {
  position: sticky;
  top: 96px;
  align-self: start;
}
.at-screen {
  position: relative;
  overflow: visible;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 34px;
  background:
    radial-gradient(circle at 50% 44%, rgba(255,107,53,0.12), transparent 40%),
    rgba(255,255,255,0.015);
  box-shadow:
    0 50px 140px rgba(0,0,0,0.62),
    0 0 80px rgba(255,107,53,0.08),
    inset 0 1px 0 rgba(255,255,255,0.12);
  aspect-ratio: 16 / 10;
  perspective: 1000px;
  transform-style: preserve-3d;
}
.at-screen::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.08), transparent 18%, rgba(0,0,0,0.42)),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.04) 0 1px, transparent 1px 4px);
  opacity: 0.48;
}
.at-card-tunnel {
  position: absolute;
  inset: -18% -12%;
  transform-style: preserve-3d;
  transform:
    rotateX(58deg)
    rotateZ(-9deg)
    translate3d(0, calc(var(--story-progress, 0) * -18px), 0);
}
.at-spine {
  position: absolute;
  left: 50%;
  top: 10%;
  bottom: 8%;
  width: 38px;
  border-radius: 999px;
  background:
    linear-gradient(90deg, rgba(255,255,255,0.08), rgba(255,255,255,0.28), rgba(139,92,246,0.18)),
    rgba(255,255,255,0.04);
  box-shadow:
    inset 0 0 28px rgba(255,255,255,0.14),
    0 0 80px rgba(139,92,246,0.28);
  transform: translateX(-50%) translateZ(-80px);
}
.at-glass-card {
  position: absolute;
  width: 48%;
  min-height: 32%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 8px;
  padding: 20px;
  border: 1px solid rgba(255,255,255,0.22);
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.18), rgba(255,255,255,0.035) 48%, rgba(255,107,53,0.08)),
    rgba(255,255,255,0.035);
  -webkit-backdrop-filter: blur(16px) saturate(145%);
          backdrop-filter: blur(16px) saturate(145%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.24),
    0 20px 80px rgba(0,0,0,0.54),
    0 0 60px rgba(255,107,53,0.08);
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform 0.18s ease-out, opacity 0.18s ease-out;
}
.at-glass-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 28% 22%, rgba(255,255,255,0.32), transparent 24%),
    radial-gradient(circle at 74% 66%, rgba(139,92,246,0.24), transparent 30%),
    linear-gradient(110deg, transparent 0 38%, rgba(255,255,255,0.22) 46%, transparent 55%);
  mix-blend-mode: screen;
  opacity: 0.72;
}
.at-glass-card span,
.at-glass-card strong {
  position: relative;
  z-index: 1;
}
.at-glass-card span {
  color: rgba(255,188,153,0.82);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.16em;
}
.at-glass-card strong {
  color: rgba(255,255,255,0.88);
  font-size: clamp(18px, 2.2vw, 30px);
  line-height: 1.05;
  letter-spacing: -0.06em;
}
.at-glass-card--collect {
  left: 4%;
  top: 14%;
  transform: translate3d(var(--card-collect-x, -10px), var(--card-collect-y, 0px), var(--card-collect-z, 70px)) rotateY(18deg);
}
.at-glass-card--canvas {
  right: 4%;
  top: 25%;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.16), rgba(255,255,255,0.035) 48%, rgba(139,92,246,0.12)),
    rgba(255,255,255,0.035);
  transform: translate3d(var(--card-canvas-x, 14px), var(--card-canvas-y, 0px), var(--card-canvas-z, 120px)) rotateY(-18deg);
}
.at-glass-card--reference {
  left: 10%;
  bottom: 12%;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.14), rgba(255,255,255,0.035) 48%, rgba(57,211,255,0.11)),
    rgba(255,255,255,0.035);
  transform: translate3d(var(--card-reference-x, -12px), var(--card-reference-y, 0px), var(--card-reference-z, 160px)) rotateY(16deg);
}
.at-glass-card--aigc {
  right: 9%;
  bottom: 2%;
  transform: translate3d(var(--card-aigc-x, 18px), var(--card-aigc-y, 0px), var(--card-aigc-z, 210px)) rotateY(-15deg);
}
.at-workbench {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 22%, rgba(255,107,53,0.16), transparent 24%),
    radial-gradient(circle at 72% 68%, rgba(139,92,246,0.16), transparent 28%),
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px),
    #0b0b0b;
  background-size: auto, auto, 34px 34px, 34px 34px, auto;
}
.at-workbench__node {
  position: absolute;
  display: block;
  border: 1px solid rgba(255,255,255,0.34);
  border-radius: 16px;
  background:
    linear-gradient(145deg, rgba(255,255,255,0.26), rgba(255,255,255,0.09)),
    rgba(255,107,53,0.12);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.22),
    0 0 60px rgba(255,107,53,0.2),
    0 24px 70px rgba(0,0,0,0.48);
  -webkit-backdrop-filter: blur(10px);
          backdrop-filter: blur(10px);
}
.at-workbench__node::before {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  top: 12px;
  height: 5px;
  border-radius: 999px;
  background: linear-gradient(90deg, #ff6b35, rgba(255,255,255,0.6), transparent);
  opacity: 0.78;
}
.at-workbench__node--a {
  left: 11%;
  top: 16%;
  width: 34%;
  height: 30%;
}
.at-workbench__node--b {
  right: 13%;
  top: 20%;
  width: 25%;
  height: 22%;
  background:
    linear-gradient(145deg, rgba(255,255,255,0.24), rgba(255,255,255,0.08)),
    rgba(139,92,246,0.15);
}
.at-workbench__node--c {
  left: 20%;
  bottom: 14%;
  width: 26%;
  height: 24%;
}
.at-workbench__node--d {
  right: 18%;
  bottom: 17%;
  width: 32%;
  height: 28%;
  background:
    linear-gradient(145deg, rgba(255,255,255,0.24), rgba(255,255,255,0.08)),
    rgba(139,92,246,0.14);
}
.at-workbench__line {
  position: absolute;
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,107,53,0.45), transparent);
  transform-origin: left center;
}
.at-workbench__line--a {
  left: 37%;
  top: 42%;
  width: 35%;
  transform: rotate(19deg);
}
.at-workbench__line--b {
  left: 33%;
  top: 62%;
  width: 38%;
  transform: rotate(-17deg);
}
.at-screen__caption {
  margin-top: 14px;
  color: rgba(255,255,255,0.38);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
}
.at-story__steps {
  display: grid;
  gap: clamp(80px, 12vw, 150px);
  padding: 8vh 0;
}
.at-step {
  min-height: 56vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  opacity: 0.2;
  transform: translateY(42px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.at-step.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.at-step span {
  margin-bottom: 18px;
  color: #ffb08e;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.2em;
}
.at-step h2 {
  max-width: 720px;
  margin: 0 0 22px;
  font-size: clamp(42px, 6vw, 86px);
  line-height: 0.96;
  letter-spacing: -0.075em;
}
.at-step p {
  max-width: 620px;
  color: rgba(255,255,255,0.62);
  font-size: 16px;
  line-height: 1.9;
}

/* ============================ HERO (cursor.com 首屏比例) ============================ */
.hero {
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
}
.hero-cursor {
  min-height: calc(100svh - var(--site-header-h));
  padding: clamp(84px, 10vh, 136px) var(--site-gutter) clamp(64px, 9vh, 116px);
  background:
    radial-gradient(ellipse 60% 38% at 62% 18%, rgba(255, 107, 53, 0.16), transparent 72%),
    radial-gradient(ellipse 48% 28% at 18% 72%, rgba(255, 255, 255, 0.055), transparent 70%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.018), transparent 24%);
}
.hero-cursor .hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--site-container);
  margin: 0 auto;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.hero-top {
  max-width: 41rem;
  flex-shrink: 0;
  margin-bottom: 0;
  text-align: left;
}
.hero-cursor .hero-title {
  font-size: clamp(22px, 1.65vw, 26px);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  text-wrap: balance;
}
.hero-title-accent {
  color: var(--accent);
  font-weight: 500;
}
.hero-lead {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-mute);
  max-width: 36rem;
  font-weight: 400;
}
.hero-cta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 0;
}
.site-cursor .hero-cursor .btn-primary {
  background: var(--text);
  color: var(--bg);
  font-weight: 500;
}
.site-cursor .hero-cursor .btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border-strong);
  font-weight: 500;
}
.hero-cursor .btn-lg {
  padding: 6px 14px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 999px;
}

/* 首屏：Active Theory 灵感的沉浸式黑场 + 响应式产品面板 */
.hero-art {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(560px, 1.1fr);
  gap: clamp(48px, 7vw, 104px);
  align-items: center;
  min-height: min(780px, calc(100svh - 120px));
  padding: clamp(22px, 4vw, 56px) 0;
}
.hero-art::before {
  content: "";
  position: absolute;
  inset: -8% -8%;
  z-index: -1;
  background:
    radial-gradient(circle at var(--cursor-x) var(--cursor-y), rgba(255, 107, 53, 0.16), transparent 32vw),
    linear-gradient(120deg, transparent 0 38%, rgba(255, 255, 255, 0.07) 48%, transparent 58%);
  filter: blur(1px);
  pointer-events: none;
}
.hero-art-copy {
  max-width: 680px;
}
.hero-kicker {
  display: inline-flex;
  margin-bottom: 26px;
  padding: 7px 10px;
  border: 1px solid rgba(255, 107, 53, 0.26);
  border-radius: 999px;
  background: rgba(255, 107, 53, 0.07);
  color: rgba(255, 194, 164, 0.88);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.hero-cursor .hero-art .hero-title {
  max-width: 9.7em;
  margin-bottom: 28px;
  font-size: clamp(54px, 7.4vw, 112px);
  line-height: 0.9;
  font-weight: 800;
  letter-spacing: -0.085em;
}
.hero-title-accent {
  background: linear-gradient(135deg, #fff 0%, #ff6b35 45%, #a64bff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 800;
}
.hero-cursor .hero-art .hero-lead {
  max-width: 620px;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.66);
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.85;
}
.hero-art-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}
.hero-art-notes span {
  padding: 7px 11px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.045);
  color: rgba(255, 255, 255, 0.62);
  font-size: 12px;
  backdrop-filter: blur(10px);
}
.hero-product {
  position: relative;
  display: grid;
  gap: 18px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 32px;
  background:
    radial-gradient(ellipse 72% 38% at 50% 0%, rgba(255, 107, 53, 0.14), transparent 72%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.018)),
    rgba(8, 8, 8, 0.86);
  box-shadow:
    0 44px 130px rgba(0, 0, 0, 0.68),
    0 0 90px rgba(255, 107, 53, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.09);
  transform:
    perspective(1100px)
    rotateX(var(--hero-rx, 0deg))
    rotateY(var(--hero-ry, 0deg))
    translateZ(0);
  transition: transform 0.18s ease-out, border-color 0.2s ease;
  will-change: transform;
}
.hero-product::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background:
    linear-gradient(115deg, transparent 0 34%, rgba(255, 255, 255, 0.14) 42%, transparent 52%),
    radial-gradient(circle at var(--cursor-x) var(--cursor-y), rgba(255, 107, 53, 0.14), transparent 34vw);
  mix-blend-mode: screen;
  opacity: 0.55;
}
.hero-product:hover {
  border-color: rgba(255, 107, 53, 0.32);
}
.hero-product__meta {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: rgba(255, 255, 255, 0.36);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.hero-product__frame {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: #111;
  aspect-ratio: 16 / 10;
}
.hero-product__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent 16%, transparent 84%, rgba(0, 0, 0, 0.36)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 4px);
  opacity: 0.48;
}
.hero-product__frame video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}
.hero-product__rail {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.hero-product__rail article {
  position: relative;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  overflow: hidden;
}
.hero-product__rail article::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(255, 107, 53, 0.12), transparent 58%);
  opacity: 0;
  transition: opacity 0.18s;
}
.hero-product__rail article:hover::before {
  opacity: 1;
}
.hero-product__rail span {
  display: block;
  margin-bottom: 8px;
  color: #ffb08e;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.hero-product__rail strong {
  display: block;
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
  line-height: 1.55;
  font-weight: 560;
}

.hero-field {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.hero-field span {
  position: absolute;
  width: 1px;
  height: 38vh;
  background: linear-gradient(180deg, transparent, rgba(255, 107, 53, 0.22), transparent);
  transform: rotate(26deg);
  animation: fieldDrift 9s linear infinite;
}
.hero-field span:nth-child(1) { left: 12%; top: -10%; animation-delay: -1s; }
.hero-field span:nth-child(2) { left: 48%; top: 4%; animation-delay: -4s; }
.hero-field span:nth-child(3) { left: 72%; top: -16%; animation-delay: -6s; }
.hero-field span:nth-child(4) { left: 92%; top: 18%; animation-delay: -2s; }

@keyframes fieldDrift {
  0% { transform: translate3d(0, -12%, 0) rotate(26deg); opacity: 0; }
  18% { opacity: 1; }
  82% { opacity: 0.8; }
  100% { transform: translate3d(-18vw, 54vh, 0) rotate(26deg); opacity: 0; }
}

/* 首屏主演示(旧布局保留类名供其它页引用) */
.hero-demo-showcase {
  width: 100%;
  margin-top: 40px;
}
.media-frame {
  position: relative;
  width: 100%;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  background:
    linear-gradient(165deg, rgba(255, 107, 53, 0.08) 0%, transparent 42%),
    #121212;
  box-shadow: 0 20px 56px rgba(0, 0, 0, 0.42);
}
.media-frame--hero .demo-stage-real {
  aspect-ratio: var(--hero-demo-ratio);
}
.hero-bg-glow {
  position: absolute;
  inset: -80px 0 auto;
  height: 60%;
  background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(255, 107, 53, 0.1), transparent 65%);
  pointer-events: none;
  z-index: 0;
}

/* ============================ HERO DEMO ============================ */
/* hero 区直接嵌入用户自己录的真实软件运行视频(WYKF/assets/demo.mp4 / demo.webm)。
   视频文件不存在时浏览器会 fallback 到 poster (assets/demo-poster.jpg)。
   外壳保留软件画布感:#161616 底 + 玻璃感阴影 + 左上「真实运行画面」标签。 */
.hero-demo { position: relative; width: 100%; }
.demo-stage-real {
  position: relative;
  width: 100%;
  background: #161616;
  overflow: hidden;
  isolation: isolate;
  user-select: none;
  aspect-ratio: var(--hero-demo-ratio, 1300 / 756);
}
.demo-stage-real--flush {
  border: none;
  border-radius: 0;
  box-shadow: none;
}
.demo-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center center;
  background: #161616;
}
.demo-frame-label {
  position: absolute;
  left: 16px;
  top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 6px 10px;
  border-radius: 999px;
  background: rgba(20, 20, 20, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  color: rgba(255, 255, 255, 0.78);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  pointer-events: none;
  z-index: 5;
}
.demo-frame-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #FF5959;
  box-shadow: 0 0 0 0 rgba(255, 89, 89, 0.55);
  animation: demoRecPulse 1.6s ease-in-out infinite;
}
@keyframes demoRecPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 89, 89, 0.55); }
  50%      { box-shadow: 0 0 0 6px rgba(255, 89, 89, 0); }
}

/* ============================ FEATURE SHOWCASE (cursor.com card) ============================ */
.feature-showcase {
  padding: 0 var(--site-gutter) var(--section-pad-y);
}
.feature-card {
  margin-bottom: var(--section-pad-y);
}
.feature-card:last-child {
  margin-bottom: 0;
}
.feature-card-head {
  max-width: 41rem;
  margin-bottom: 24px;
}
.feature-card-title {
  margin: 0 0 12px;
  font-size: 22px;
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: balance;
}
.feature-card-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-mute);
  font-weight: 400;
}
.feature-card-media .demo-stage-real {
  aspect-ratio: var(--feature-card-ratio);
}

/* ============================ SECTIONS ============================ */
.section {
  padding: 88px 32px;
}
.section-alt {
  /* 与主内容同底,不再用 #141414 渐变条带 */
}
.section-head {
  max-width: 760px;
  margin: 0 auto 56px;
  text-align: center;
}
.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.section-sub {
  font-size: 16px;
  color: var(--text-mute);
}

/* ============================ CORE 4-SET ============================ */
.core-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 1100px) { .core-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px)  { .core-grid { grid-template-columns: 1fr; } }

.core-card {
  position: relative;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0)) padding-box,
    linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.04)) border-box;
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  padding: 32px 24px 24px;
  overflow: hidden;
  transition: transform 0.22s, box-shadow 0.22s, border-color 0.22s;
}
.core-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 40% at 50% 0%, rgba(255, 107, 53, 0.18), transparent 60%);
  opacity: 0;
  transition: opacity 0.22s;
  pointer-events: none;
}
.core-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
}
.core-card:hover::before { opacity: 1; }

.core-card-num {
  position: absolute;
  top: 18px;
  right: 22px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--text-faint);
  font-feature-settings: "tnum";
}
.core-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255, 107, 53, 0.22), rgba(255, 107, 53, 0.06));
  color: var(--accent);
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  border: 1px solid rgba(255, 107, 53, 0.18);
  box-shadow: 0 8px 24px rgba(255, 107, 53, 0.1);
}
.core-card-icon svg { width: 26px; height: 26px; }
.core-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.core-card p {
  font-size: 14px;
  color: var(--text-mute);
  line-height: 1.7;
}
.core-card p strong {
  color: var(--text);
  font-weight: 600;
}
.section-core {
  position: relative;
  overflow: hidden;
}
.section-core::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 420px;
  background: radial-gradient(ellipse 46% 32% at 50% 0%, rgba(255, 107, 53, 0.09), transparent 70%);
  pointer-events: none;
}
.section-head--editorial {
  position: relative;
  z-index: 1;
  max-width: 860px;
}
.core-grid--editorial {
  position: relative;
  z-index: 1;
  max-width: 1040px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.core-card--editorial {
  min-height: 300px;
  padding: 30px 22px 26px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.018) 52%, rgba(255, 255, 255, 0.035)),
    rgba(18, 18, 18, 0.82);
  border-color: rgba(255, 255, 255, 0.1);
}
.core-card--editorial::after {
  content: "";
  position: absolute;
  left: 26px;
  right: 26px;
  bottom: 22px;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 107, 53, 0.55), transparent);
  opacity: 0.45;
}
.core-card--editorial .core-card-icon {
  width: 46px;
  height: 46px;
  margin-bottom: 38px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 36% 26%, rgba(255, 255, 255, 0.28), transparent 32%),
    rgba(255, 107, 53, 0.14);
}
.core-card--editorial h3 {
  margin-bottom: 14px;
  font-size: 22px;
  font-weight: 650;
  letter-spacing: -0.04em;
}
.core-card--editorial p {
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
  line-height: 1.8;
}

/* ============================ FLOATING ICONS (mobbin-style) ============================ */
.section-float {
  position: relative;
  padding: 80px 32px 120px;
  overflow: hidden;
}
.float-stage {
  position: relative;
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  height: 720px;
}

/* 中央文字井 -- 占舞台正中,不接受鼠标事件以免遮挡漂浮 icon */
.float-center {
  position: absolute;
  inset: 36% 28% 36% 28%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  z-index: 5;
  pointer-events: none;
}
.float-center .eyebrow {
  margin-bottom: 18px;
  padding: 6px 14px;
  background: rgba(255, 107, 53, 0.1);
  border: 1px solid rgba(255, 107, 53, 0.22);
  border-radius: 999px;
  color: var(--accent);
}
.float-title {
  font-size: clamp(32px, 4.5vw, 56px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0;
}
.float-line {
  display: block;
  background: linear-gradient(180deg, #fff 0%, rgba(255, 255, 255, 0.72) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.float-line + .float-line { margin-top: 2px; }
.float-sub {
  margin-top: 22px;
  font-size: 14px;
  color: var(--text-mute);
  max-width: 520px;
  line-height: 1.7;
}

/* 漂浮 icon 容器
   不设 z-index -- 否则容器创建独立 stacking context,
   内部 pill 不管 z-index 设多大都会被 .float-center (z-index:5) 整体盖住,
   导致 hover 弹出的 tip 卡片被中央文字遮挡。 */
.float-icons {
  position: absolute;
  inset: 0;
  pointer-events: none;   /* 容器不拦截事件,具体 pill 内自己开 */
}

/* 单个漂浮 pill (按钮形态,可 hover) */
.float-pill {
  position: absolute;
  left: var(--x, 50%);
  top: var(--y, 50%);
  /* 漂浮动画:上下 ±14px,各 pill 用不同 duration 与 delay 错开 */
  animation: float-y var(--dur, 5s) ease-in-out var(--delay, 0s) infinite alternate;
  pointer-events: auto;
  z-index: 1;
}
.float-pill:hover {
  z-index: 30;
  animation-play-state: paused;
}
/* 厂商 LOGO:无说明卡,悬停仅轻微提亮,避免误以为还能点开详情 */
.float-pill--vendor:hover {
  z-index: 1;
  animation-play-state: running;
}
.float-pill--vendor .float-pill-body:hover {
  transform: scale(1.06);
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
  border-color: var(--border);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
  color: var(--text);
}
.float-pill--vendor .float-pill-body:hover img {
  filter: brightness(1.12) saturate(1.22) opacity(1);
}

/* pill 主体 -- 真正接收 hover 缩放 */
.float-pill-body {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border: 1px solid var(--border);
  color: var(--text);
  cursor: default;
  transition: transform 0.25s cubic-bezier(0.3, 1.4, 0.6, 1),
              background 0.25s,
              border-color 0.25s,
              box-shadow 0.25s;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
}
.float-pill-body:hover {
  transform: scale(1.18);
  background: linear-gradient(180deg, rgba(255,107,53,0.18), rgba(255,107,53,0.06));
  border-color: rgba(255, 107, 53, 0.4);
  box-shadow: 0 12px 32px rgba(255, 107, 53, 0.22), 0 6px 18px rgba(0, 0, 0, 0.55);
  color: var(--accent);
}
.float-pill-body svg { width: 28px; height: 28px; stroke-width: 1.6; }
.float-pill-body img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  /* 厂商 LOGO 保留原色,微微提亮 + 提饱和度,
     让蓝色阴阳鱼、彩虹光环、橙火焰等彩色 LOGO 在深底上鲜亮可辨。
     原图已用抠图脚本去掉白底 + 黑底,直接显示彩色形状。 */
  filter: brightness(1.08) saturate(1.18) opacity(0.92);
  transition: filter 0.25s, transform 0.25s;
}
.float-pill-body:hover img {
  filter: brightness(1.15) saturate(1.3) opacity(1)
          drop-shadow(0 0 10px rgba(255, 107, 53, 0.5));
}
/* 极少数 LOGO 本身是纯黑 silhouette(如 happyhorse 黑木马),
   在深底上不可见,JS 渲染时给它打 data-img-invert="1" 单独反色 */
.float-pill[data-img-invert="1"] .float-pill-body img {
  filter: brightness(0) invert(1) opacity(0.78);
}
.float-pill[data-img-invert="1"] .float-pill-body:hover img {
  filter: brightness(0) invert(1) opacity(1)
          drop-shadow(0 0 10px rgba(255, 107, 53, 0.5));
}

/* hover 弹出 tip 卡片 */
.float-pill-tip {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 14px);
  transform: translateX(-50%) translateY(6px);
  width: 260px;
  background: rgba(20, 20, 22, 0.96);
  -webkit-backdrop-filter: blur(14px);
          backdrop-filter: blur(14px);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  padding: 14px 16px 14px;
  text-align: left;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s, transform 0.22s cubic-bezier(0.3, 1.4, 0.6, 1);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.6);
  z-index: 40;
}
.float-pill-tip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: rgba(20, 20, 22, 0.96);
}
.float-pill-body:hover + .float-pill-tip,
.float-pill:hover .float-pill-tip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.float-pill-tip-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.005em;
  margin-bottom: 6px;
  color: var(--text);
}
.float-pill-tip-body {
  font-size: 12.5px;
  color: var(--text-mute);
  line-height: 1.6;
}

/* 接近上下边界的 pill 把 tip 翻到下方,避免被舞台外裁切 */
.float-pill[data-tip-pos="bottom"] .float-pill-tip {
  top: calc(100% + 14px);
  bottom: auto;
}
.float-pill[data-tip-pos="bottom"] .float-pill-tip::after {
  top: auto;
  bottom: 100%;
  border-top-color: transparent;
  border-bottom-color: rgba(20, 20, 22, 0.96);
}

/* 接近左右边界的 pill 的横向 tip 对齐 -- 防止 260px 宽的 tip 卡片越出舞台 */
.float-pill[data-tip-align="left"] .float-pill-tip {
  left: -10px;
  transform: translateX(0) translateY(6px);
}
.float-pill[data-tip-align="left"] .float-pill-tip::after {
  left: 30px;
  transform: none;
}
.float-pill[data-tip-align="left"]:hover .float-pill-tip {
  transform: translateX(0) translateY(0);
}
.float-pill[data-tip-align="right"] .float-pill-tip {
  left: auto;
  right: -10px;
  transform: translateX(0) translateY(6px);
}
.float-pill[data-tip-align="right"] .float-pill-tip::after {
  left: auto;
  right: 30px;
  transform: none;
}
.float-pill[data-tip-align="right"]:hover .float-pill-tip {
  transform: translateX(0) translateY(0);
}

@keyframes float-y {
  /* 漂浮幅度:更明显,目测一眼能看出在动 */
  0%   { transform: translateY(0px); }
  100% { transform: translateY(-32px); }
}

/* 响应式 -- 小屏把 stage 拉高,中央井缩窄给 icon 留出散布空间 */
@media (max-width: 980px) {
  .float-stage { height: 820px; }
  .float-center { inset: 32% 6% 32% 6%; }
  .float-pill-body { width: 52px; height: 52px; border-radius: 14px; }
  .float-pill-body svg { width: 24px; height: 24px; }
  .float-pill-body img { width: 30px; height: 30px; }
  .float-pill-tip { width: 220px; }
}
@media (max-width: 620px) {
  .float-stage { height: 880px; }
  .float-center { inset: 30% 0 30% 0; }
  .float-title { font-size: 28px; }
  .float-pill-body { width: 46px; height: 46px; border-radius: 12px; }
  .float-pill-body svg { width: 22px; height: 22px; }
  .float-pill-body img { width: 26px; height: 26px; }
  .float-pill-tip { width: 200px; }
}

/* ============================ PROMPT MARQUEE ============================ */
/* 提示词库横向匀速滚动展示
   - 卡片不可点击,纯视觉播放
   - 用 transform: translateX 做无限循环动画
   - JS 渲染两遍内容拼接,动画到 -50% 时刚好与下一份对齐,实现无缝衔接
   - 用左右两个 fade mask 蒙住边缘以淡入淡出 */
.section-marquee {
  /* 让 marquee 撑满视口宽,不受 max-w 约束 */
  padding-left: 0;
  padding-right: 0;
}
.section-marquee .section-head {
  padding: 0 32px;
}
.prompt-marquee {
  position: relative;
  width: 100%;
  overflow: hidden;
  padding: 24px 0;
  /* 由 CSS 变量统一控制速度 -- 数值越大滚得越慢 */
  --marquee-duration: 90s;
}
.prompt-marquee-track {
  display: flex;
  gap: 18px;
  width: max-content;
  animation: marquee-scroll var(--marquee-duration) linear infinite;
  /* 起始与终点之间走完一份内容(因为内容 ×2 拼接,-50% 与起点视觉上是同一帧) */
  will-change: transform;
}
@keyframes marquee-scroll {
  /* 从右向左滚动:track 从 0 滑动到 -50%。
     内容渲染了两遍,到 -50% 时正好与起点视觉对齐,无缝循环。 */
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.prompt-marquee-fade {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 120px;
  pointer-events: none;
  z-index: 2;
}
.prompt-marquee-fade-left {
  left: 0;
  background: linear-gradient(90deg, var(--bg) 0%, transparent 100%);
}
.prompt-marquee-fade-right {
  right: 0;
  background: linear-gradient(270deg, var(--bg) 0%, transparent 100%);
}

.prompt-card {
  flex: 0 0 auto;
  width: 260px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  user-select: none;
  cursor: default;
}
.prompt-card-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  background:
    radial-gradient(ellipse at 70% 30%, rgba(255, 107, 53, 0.10), transparent 60%),
    linear-gradient(135deg, #1A1A1A 0%, #0E0E0E 100%);
  overflow: hidden;
  display: block;
}
.prompt-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  /* 防止用户拖拽出来,纯展示 */
  -webkit-user-drag: none;
  user-drag: none;
}
.prompt-card-body {
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.prompt-card-title-zh {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.005em;
  color: var(--text);
}
.prompt-card-title-en {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-faint);
  letter-spacing: 0.01em;
  line-height: 1.35;
}
.prompt-card-summary {
  margin-top: 4px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
}
.prompt-card-summary-zh {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--text-mute);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.prompt-card-summary-en {
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--text-faint);
  font-style: italic;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.model-note {
  max-width: 720px;
  margin: 32px auto 0;
  padding: 0 32px;
  text-align: center;
  font-size: 13px;
  color: var(--text-faint);
}

@media (max-width: 720px) {
  .prompt-card { width: 220px; }
  .prompt-marquee-fade { width: 60px; }
  .prompt-marquee { --marquee-duration: 70s; }
}

/* ============================ CTA ============================ */
.cta {
  padding: 100px 32px 112px;
  text-align: center;
}
.cta-inner { max-width: 640px; margin: 0 auto; }
.cta h2 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}
.cta p {
  font-size: 17px;
  color: var(--text-mute);
  margin-bottom: 36px;
}
.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================ FOOTER ============================ */
.footer {
  padding: 60px 32px 32px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  /* 2026-05-25 v0.4 客户原话:「参考图 2」 — 左边品牌 + 右边 4 列(产品/资源/联系客服/联系我们) */
  grid-template-columns: minmax(220px, 1.2fr) 3fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
}
@media (max-width: 960px) { .footer-inner { grid-template-columns: 1fr; } }

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}
.footer-brand-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-brand-tag {
  font-size: 13px;
  color: var(--text-mute);
}
.footer-brand-company {
  font-size: 12px;
  color: var(--text-faint);
  margin-top: 10px;
}
.footer-cols {
  display: grid;
  /* 4 列:产品 / 资源 / 联系客服(QR) / 联系我们(邮箱) */
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
@media (max-width: 960px) { .footer-cols { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .footer-cols { grid-template-columns: 1fr; } }
.footer-col-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-mute);
  margin-bottom: 14px;
}
.footer-cols a {
  display: block;
  font-size: 14px;
  color: var(--text-mute);
  padding: 4px 0;
  transition: color 0.18s;
}
.footer-cols a:hover { color: var(--text); }

/* 联系客服 QR 占位:6x6 灰格点阵,用纯 CSS 画一张"假二维码"占位,
   未来替换成真实公众号图片只要把 .footer-qr-grid 整块换成 <img src="…"> 即可 */
.footer-qr {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}
.footer-qr-grid {
  width: 116px;
  height: 116px;
  padding: 8px;
  background: #0f0f10;
  border: 1px solid var(--border);
  border-radius: 10px;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-template-rows: repeat(6, 1fr);
  gap: 4px;
}
.footer-qr-grid span {
  background: #2a2a2c;
  border-radius: 2px;
}
.footer-qr-grid span:nth-child(7n+1) { background: #4a4a4d; }
.footer-qr-grid span:nth-child(11n+3) { background: #3a3a3d; }
/* 真实客服二维码图（上传后显示） */
.footer-qr-img {
  width: 116px;
  height: 116px;
  border-radius: 8px;
  background: #fff;
  padding: 6px;
  box-sizing: border-box;
  object-fit: contain;
  display: block;
}
.footer-qr-hint {
  font-size: 12px;
  color: var(--text-faint);
}

/* 联系我们:左标签 + 右链接的两列小布局 */
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-contact-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 14px;
}
.footer-contact-label {
  flex-shrink: 0;
  color: var(--text-faint);
}
.footer-contact-row a {
  padding: 0;
  color: var(--text-mute);
  word-break: break-all;
}
.footer-placeholder {
  margin-left: 4px;
  font-size: 12px;
  color: var(--text-faint);
}

/* 底部备案行:Copyright + 工信部备案号 + 国徽 + 公安联网备案号
   严格按工信部 / 公安部规定:文字 + 链接 + 国徽小图标(仅公安联网备案带国徽)。 */
.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-top: 24px;
}
.footer-bottom-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  column-gap: 8px;
  row-gap: 6px;
  font-size: 13px;
  color: var(--text-faint);
}
.footer-bottom-row .footer-copy { color: var(--text-faint); }
.footer-bottom-row .footer-dot { color: var(--text-faint); opacity: 0.6; }
.footer-beian {
  color: var(--text-faint);
  transition: color 0.18s;
}
.footer-beian:hover { color: var(--text-mute); }
.footer-beian-gov {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-beian-emblem {
  width: 16px;
  height: 16px;
  display: inline-block;
  vertical-align: middle;
  filter: none; /* 国徽是带颜色的 PNG,不做 invert/灰度,保留原色 */
}

/* ============================ RESPONSIVE TWEAKS ============================ */
@media (max-width: 1024px) {
  :root {
    --section-pad-top: 80px;
    --section-pad-y: 48px;
  }
  .hero-canvas__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-canvas__copy {
    max-width: 720px;
  }
  .at-hero__copy {
    min-height: 72svh;
  }
  .at-hero h1 {
    font-size: clamp(56px, 14vw, 118px);
  }
  .at-hero p {
    margin-left: 0;
  }
  .at-actions {
    justify-content: flex-start;
  }
  .glass-logo {
    left: 66%;
    top: 44%;
    opacity: 0.72;
  }
  .at-story {
    grid-template-columns: 1fr;
  }
  .at-story::before {
    display: none;
  }
  .at-story__visual {
    position: relative;
    top: auto;
  }
  .at-screen {
    max-width: 680px;
    margin: 0 auto;
  }
  .core-grid--editorial {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .hero-art {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 52px;
  }
  .hero-art-copy {
    max-width: 760px;
    text-align: center;
    margin: 0 auto;
  }
  .hero-cursor .hero-art .hero-title,
  .hero-cursor .hero-art .hero-lead {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-art .hero-cta,
  .hero-art-notes {
    justify-content: center;
  }
  .hero-product {
    max-width: 760px;
    width: 100%;
    margin: 0 auto;
  }
  .hero-product__rail {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 720px) {
  .nav-links { display: none; }
  :root {
    --section-pad-top: 56px;
    --section-pad-y: 40px;
    --site-gutter: 16px;
  }
  .at-hero {
    min-height: calc(100svh - var(--site-header-h));
    padding-top: 72px;
  }
  .glass-logo {
    width: 76vw;
    left: 50%;
    top: 42%;
    opacity: 0.42;
  }
  .at-kicker {
    font-size: 9px;
    letter-spacing: 0.13em;
  }
  .at-hero__copy {
    min-height: 74svh;
  }
  .at-hero h1 {
    font-size: clamp(48px, 17vw, 76px);
    letter-spacing: -0.075em;
  }
  .at-hero p {
    font-size: 14px;
    line-height: 1.75;
  }
  .at-actions {
    flex-wrap: wrap;
  }
  .at-scroll-cue {
    display: none;
  }
  .at-story {
    padding-top: 64px;
    padding-bottom: 64px;
  }
  .at-screen {
    border-radius: 24px;
    aspect-ratio: 4 / 3;
  }
  .at-card-tunnel {
    inset: -8%;
    transform: rotateX(50deg) rotateZ(-8deg) scale(0.86);
  }
  .at-glass-card {
    width: 54%;
    min-height: 26%;
    padding: 14px;
    border-radius: 18px;
  }
  .at-glass-card strong {
    font-size: 18px;
    letter-spacing: -0.04em;
  }
  .at-spine {
    width: 28px;
  }
  .at-story__steps {
    gap: 52px;
    padding: 20px 0 0;
  }
  .at-step {
    min-height: auto;
    opacity: 1;
    transform: none;
  }
  .at-step h2 {
    font-size: clamp(34px, 12vw, 52px);
  }
  .at-step p {
    font-size: 14px;
  }
  .hero-cursor .hero-art .hero-title { font-size: clamp(38px, 12vw, 58px); }
  .hero-cursor .hero-art .hero-lead { font-size: 14px; margin-bottom: 18px; }
  .hero-product {
    padding: 12px;
    border-radius: 22px;
  }
  .hero-product__meta { display: none; }
  .hero-product__frame {
    border-radius: 16px;
  }
  .hero-product__rail article {
    padding: 13px;
  }
  .core-grid--editorial {
    grid-template-columns: 1fr;
  }
  .core-card--editorial {
    min-height: auto;
  }
  .hero-demo-showcase { margin-top: 28px; }
  .feature-card-title { font-size: 20px; }
  .feature-card-desc { font-size: 14px; }
  .feature-card-head { margin-bottom: 16px; }
  .section { padding: 64px 20px; }
  .demo-frame-label { font-size: 11px; left: 10px; top: 10px; padding: 5px 10px 5px 8px; }
}