/* ==========================================================================
   星媒网络 · AI 提效官网
   base.css — 设计变量 / 基础排版 / 导航 / 页脚 / 通用组件
   ========================================================================== */

:root {
  /* 色彩 */
  --ink: #0c0d12;
  --ink-2: #3d4350;
  --ink-3: #24262f;
  --muted: #69707d;
  --muted-2: #6f7684;
  --line: #e9ebf1;
  --line-strong: #d9dce5;
  --bg: #ffffff;
  --bg-soft: #f6f7fb;
  --bg-tint: #f1f2f8;

  --brand: #4b45ff;
  --brand-2: #7c63ff;
  --brand-3: #2f6bff;
  --brand-ink: #2a25c9;
  --brand-soft: #eef0ff;
  --brand-soft-2: #e6e3ff;
  --grad: linear-gradient(100deg, #4b45ff 0%, #6a52ff 48%, #7c63ff 100%);
  --grad-soft: linear-gradient(140deg, #f2f3ff 0%, #f7f5ff 55%, #ffffff 100%);

  --success: #10b981;
  --success-soft: #e9f9f2;

  /* 阴影 */
  --shadow-xs: 0 1px 2px rgba(12, 13, 18, 0.04);
  --shadow-sm: 0 1px 2px rgba(12, 13, 18, 0.04), 0 10px 30px -18px rgba(12, 13, 18, 0.14);
  --shadow-md: 0 30px 70px -30px rgba(18, 20, 40, 0.22);
  --shadow-lg: 0 50px 120px -40px rgba(18, 20, 40, 0.3);
  --glow: 0 18px 46px -18px rgba(75, 69, 255, 0.55);

  /* 圆角 */
  --r-xs: 10px;
  --r-sm: 14px;
  --r-md: 18px;
  --r-lg: 24px;
  --r-xl: 32px;
  --r-full: 999px;

  /* 尺寸 */
  --container: 1200px;
  --nav-h: 74px;
  --section-y: clamp(72px, 9vw, 118px);

  /* 字体 */
  --font-sans: "Inter", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", "Cascadia Code", Menlo, Consolas,
    "Liberation Mono", monospace;

  /* 动效 */
  --ease: cubic-bezier(0.22, 0.61, 0.24, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (max-width: 640px) {
  :root {
    --nav-h: 64px;
  }
}

/* --------------------------------------------------------------------------
   Reset
   -------------------------------------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 20px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.is-locked {
  overflow: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
figure,
blockquote {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

input,
textarea,
select {
  font: inherit;
  color: inherit;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
}

::selection {
  background: rgba(75, 69, 255, 0.18);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 6px;
}

[hidden] {
  display: none !important;
}

/* --------------------------------------------------------------------------
   布局与排版工具类
   -------------------------------------------------------------------------- */

.container {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
}

.container--wide {
  width: min(100% - 48px, 1320px);
  margin-inline: auto;
}

.section {
  position: relative;
  padding-block: var(--section-y);
}

.section--soft {
  background: var(--bg-soft);
}

.section--tint {
  background: var(--grad-soft);
}

.section--line {
  border-top: 1px solid var(--line);
}

.section--dark {
  position: relative;
  overflow: hidden;
  background: #0b0c10;
  color: #fff;
}

.section--dark .lead,
.section--dark p {
  color: rgba(255, 255, 255, 0.62);
}

.section--dark .eyebrow {
  color: rgba(255, 255, 255, 0.5);
}

.section-head {
  max-width: 780px;
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-head h2 {
  margin-top: 18px;
  font-size: clamp(30px, 3.7vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.038em;
  font-weight: 800;
}

.section-head .lead {
  margin-top: 20px;
  max-width: 640px;
  font-size: clamp(15.5px, 1.2vw, 17.5px);
  line-height: 1.85;
  color: var(--muted);
}

.section-head--center .lead {
  margin-inline: auto;
}

.section-head--row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  max-width: none;
}

.section-head--row .section-head__main {
  max-width: 720px;
}

@media (max-width: 760px) {
  .section-head--row {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.eyebrow::before {
  content: "";
  width: 20px;
  height: 1px;
  background: currentColor;
  opacity: 0.45;
}

.eyebrow--plain::before {
  display: none;
}

.eyebrow__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--grad);
  box-shadow: 0 0 0 4px rgba(75, 69, 255, 0.1);
}

.text-gradient {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  font-size: 17px;
  line-height: 1.85;
  color: var(--muted);
}

.mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.muted {
  color: var(--muted);
}

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

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}

.skip-link:focus {
  transform: none;
}

.icon {
  width: 20px;
  height: 20px;
  flex: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  pointer-events: none;
}

.icon--sm {
  width: 16px;
  height: 16px;
}

.icon--lg {
  width: 24px;
  height: 24px;
}

/* --------------------------------------------------------------------------
   按钮
   -------------------------------------------------------------------------- */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--r-full);
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease),
    border-color 0.25s var(--ease), box-shadow 0.25s var(--ease), color 0.25s var(--ease);
}

.btn .icon {
  width: 17px;
  height: 17px;
  transition: transform 0.25s var(--ease);
}

.btn:hover .icon--arrow {
  transform: translateX(3px);
}

.btn--primary {
  background: var(--ink);
  color: #fff;
  box-shadow: 0 12px 26px -16px rgba(12, 13, 18, 0.55);
}

.btn--primary:hover {
  background: var(--grad);
  box-shadow: var(--glow);
  transform: translateY(-2px);
}

.btn--gradient {
  background: var(--grad);
  color: #fff;
  box-shadow: var(--glow);
}

.btn--gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 24px 56px -18px rgba(75, 69, 255, 0.65);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.72);
  border-color: var(--line-strong);
  color: var(--ink);
  backdrop-filter: blur(8px);
}

.btn--ghost:hover {
  border-color: var(--ink);
  background: #fff;
  transform: translateY(-2px);
}

.btn--light {
  background: #fff;
  color: var(--ink);
  box-shadow: 0 14px 30px -18px rgba(0, 0, 0, 0.4);
}

.btn--light:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 44px -18px rgba(0, 0, 0, 0.5);
}

.btn--outline-light {
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
}

.btn--outline-light:hover {
  border-color: rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn--sm {
  height: 40px;
  padding: 0 17px;
  font-size: 13.5px;
}

.btn--lg {
  height: 54px;
  padding: 0 27px;
  font-size: 15.5px;
}

.btn--block {
  width: 100%;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  transition: color 0.2s var(--ease), gap 0.2s var(--ease);
}

.link-arrow .icon {
  width: 16px;
  height: 16px;
  transition: transform 0.25s var(--ease);
}

.link-arrow:hover {
  color: var(--brand);
}

.link-arrow:hover .icon {
  transform: translateX(3px);
}

.link-arrow--light {
  color: #fff;
}

.link-arrow--light:hover {
  color: #cfcaff;
}

/* --------------------------------------------------------------------------
   顶部滚动进度 / 导航
   -------------------------------------------------------------------------- */

.scroll-progress {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 120;
  height: 2px;
  pointer-events: none;
}

.scroll-progress span {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: 0 50%;
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.72);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease),
    box-shadow 0.3s var(--ease);
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  border-bottom-color: var(--line);
  box-shadow: 0 18px 40px -34px rgba(12, 13, 18, 0.35);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: none;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--ink);
  color: #fff;
  box-shadow: 0 10px 24px -12px rgba(12, 13, 18, 0.45);
  position: relative;
  overflow: hidden;
}

.brand__mark::after {
  content: "";
  position: absolute;
  inset: -30% -10% auto auto;
  width: 70%;
  height: 70%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 99, 255, 0.85), transparent 70%);
  filter: blur(8px);
}

.brand__mark svg {
  position: relative;
  z-index: 1;
  width: 20px;
  height: 20px;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__text strong {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand__text small {
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 8.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--muted-2);
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav__link {
  position: relative;
  padding: 8px 13px;
  border-radius: 9px;
  font-size: 14px;
  color: var(--ink-2);
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}

.nav__link:hover {
  color: var(--ink);
  background: rgba(12, 13, 18, 0.04);
}

.nav__link.is-active {
  color: var(--ink);
  font-weight: 600;
}

.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 1px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--grad);
  transform: translateX(-50%);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: none;
}

.header__qq {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
  transition: color 0.2s var(--ease);
}

.header__qq:hover {
  color: var(--brand);
}

.header__qq .icon {
  width: 15px;
  height: 15px;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  align-items: center;
  justify-content: center;
  color: var(--ink);
  background: #fff;
}

.menu-toggle .icon {
  width: 20px;
  height: 20px;
}

.menu-toggle .icon--close {
  display: none;
}

.menu-toggle[aria-expanded="true"] .icon--menu {
  display: none;
}

.menu-toggle[aria-expanded="true"] .icon--close {
  display: block;
}

.nav__cta {
  display: none;
}

/* 移动端导航面板 */
@media (max-width: 980px) {
  .nav {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    z-index: 99;
    display: block;
    padding: 10px 24px 26px;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 30px 60px -30px rgba(12, 13, 18, 0.25);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.25s var(--ease), transform 0.3s var(--ease),
      visibility 0.3s var(--ease);
    max-height: calc(100dvh - var(--nav-h));
    overflow-y: auto;
  }

  .nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav__link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 4px;
    font-size: 17px;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
  }

  .nav__link:hover {
    background: none;
    color: var(--brand);
  }

  .nav__link::after {
    display: none;
  }

  .nav__link::before {
    content: "";
    order: 2;
    width: 6px;
    height: 6px;
    border-right: 1.5px solid var(--muted-2);
    border-top: 1.5px solid var(--muted-2);
    transform: rotate(45deg);
    margin-right: 6px;
  }

  .nav__cta {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
  }

  .nav__cta .btn {
    width: 100%;
  }

  .nav__cta-note {
    text-align: center;
    font-size: 12px;
    color: var(--muted-2);
  }

  .header__qq {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }
}

@media (max-width: 560px) {
  .header__actions .btn {
    display: none;
  }

  .brand__text small {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   页脚
   -------------------------------------------------------------------------- */

.site-footer {
  position: relative;
  overflow: hidden;
  background: #0a0d18;
  color: rgba(255, 255, 255, 0.72);
  padding: 72px 0 30px;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: auto auto -220px -120px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(75, 69, 255, 0.22), transparent 68%);
  filter: blur(30px);
  pointer-events: none;
}

.footer__top {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  padding-bottom: 50px;
}

.footer__brand .brand__mark {
  background: rgba(255, 255, 255, 0.08);
  box-shadow: none;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.footer__brand .brand__text strong {
  color: #fff;
}

.footer__brand .brand__text small {
  color: rgba(255, 255, 255, 0.45);
}

.footer__desc {
  margin-top: 22px;
  max-width: 400px;
  font-size: 14px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.68);
}

.footer__badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 24px;
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--r-full);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.78);
  background: rgba(255, 255, 255, 0.04);
}

.footer__badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.12);
}

.footer__cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.footer__col h4 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 18px;
}

.footer__col li + li {
  margin-top: 11px;
}

.footer__col a {
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.74);
  transition: color 0.2s var(--ease);
}

.footer__col a:hover {
  color: #fff;
}

.footer__bottom {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.55);
}

.footer__bottom a {
  color: rgba(255, 255, 255, 0.68);
}

.footer__bottom a:hover {
  color: #fff;
}

.footer__meta {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.footer__watermark {
  position: absolute;
  right: -20px;
  bottom: -42px;
  font-size: clamp(80px, 14vw, 190px);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
  color: rgba(255, 255, 255, 0.025);
  pointer-events: none;
  white-space: nowrap;
}

@media (max-width: 900px) {
  .footer__top {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 560px) {
  .footer__cols {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .site-footer {
    padding-top: 56px;
  }
}

/* --------------------------------------------------------------------------
   滚动动效 / 卡片刻度高光 / 回顶
   -------------------------------------------------------------------------- */

.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
  transition-delay: var(--d, 0s);
  will-change: opacity, transform;
}

.js .reveal.is-in {
  opacity: 1;
  transform: none;
}

.spot {
  position: relative;
}

.spot::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  border-radius: inherit;
  background: radial-gradient(
    320px circle at var(--mx, 50%) var(--my, 0%),
    rgba(75, 69, 255, 0.09),
    transparent 62%
  );
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
}

.spot:hover::before {
  opacity: 1;
}

.spot > * {
  position: relative;
  z-index: 1;
}

.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease),
    visibility 0.3s var(--ease);
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.to-top .icon {
  width: 18px;
  height: 18px;
}

@media (max-width: 560px) {
  .to-top {
    right: 14px;
    bottom: 14px;
  }

  .container,
  .container--wide,
  .header__inner {
    width: calc(100% - 36px);
  }
}

/* --------------------------------------------------------------------------
   通用页面头（子页面）
   -------------------------------------------------------------------------- */

.page-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--nav-h) + clamp(56px, 8vw, 92px)) 0 clamp(48px, 6vw, 72px);
  background: linear-gradient(180deg, #fafafd 0%, #ffffff 100%);
  border-bottom: 1px solid var(--line);
}

.page-hero__grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(12, 13, 18, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(12, 13, 18, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 70% 90% at 30% 0%, #000 20%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse 70% 90% at 30% 0%, #000 20%, transparent 72%);
  pointer-events: none;
}

.page-hero__orb {
  position: absolute;
  top: -160px;
  right: -80px;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 99, 255, 0.14), transparent 66%);
  filter: blur(20px);
  pointer-events: none;
}

.page-hero .container {
  position: relative;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted-2);
  text-transform: uppercase;
}

.breadcrumb a:hover {
  color: var(--brand);
}

.breadcrumb .sep {
  opacity: 0.5;
}

.page-hero h1 {
  margin-top: 22px;
  max-width: 900px;
  font-size: clamp(38px, 5.2vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.045em;
  font-weight: 800;
}

.page-hero .lead {
  margin-top: 24px;
  max-width: 660px;
  font-size: clamp(16px, 1.3vw, 18px);
}

.page-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: var(--r-full);
  background: #fff;
  font-size: 12.5px;
  color: var(--ink-2);
}

.meta-chip .icon {
  width: 14px;
  height: 14px;
  color: var(--brand);
}

/* --------------------------------------------------------------------------
   减少动态效果
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
  }
}

/* --------------------------------------------------------------------------
   全站通用 CTA 面板
   -------------------------------------------------------------------------- */

.cta-section {
  padding-bottom: var(--section-y);
}

.cta-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(44px, 7vw, 88px) clamp(24px, 5vw, 64px);
  border-radius: var(--r-xl);
  background: linear-gradient(125deg, #443dff 0%, #5548ff 48%, #7c63ff 100%);
  color: #fff;
  text-align: center;
}

.cta-panel .eyebrow {
  color: rgba(255, 255, 255, 0.82);
}

.cta-panel__grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 100% at 50% 0%, #000 10%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 100% at 50% 0%, #000 10%, transparent 70%);
}

.cta-panel__orb {
  position: absolute;
  top: -220px;
  left: 50%;
  width: 680px;
  height: 520px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.26), transparent 66%);
  filter: blur(30px);
}

.cta-panel__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin-inline: auto;
}

.cta-panel h2 {
  margin-top: 18px;
  font-size: clamp(30px, 4.4vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.04em;
  font-weight: 800;
}

.cta-panel .lead {
  margin-top: 20px;
  margin-inline: auto;
  max-width: 560px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 15.5px;
}

.cta-panel__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
}

.cta-panel__notes {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px 24px;
  margin-top: 28px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.82);
}

.cta-panel__notes span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.cta-panel__notes .icon {
  width: 13px;
  height: 13px;
  color: #fff;
}

.cta-panel .btn--gradient {
  background: #fff;
  color: var(--ink);
  box-shadow: 0 16px 36px -20px rgba(0, 0, 0, 0.5);
}

.cta-panel .btn--gradient:hover {
  background: var(--ink);
  color: #fff;
}

@media (max-width: 560px) {
  .cta-panel__actions .btn {
    width: 100%;
  }
}