/* ========================================================================
   元启人工智能应用软件 · 企业官网  设计系统
   风格：简约 · 大气 · 科技感
   ===================================================================== */

:root {
  /* 颜色 */
  --bg: #ffffff;
  --bg-soft: #f5f7fb;
  --bg-dark: #060a14;
  --bg-dark-2: #0a1120;
  --ink: #0b1220;
  --ink-2: #1e293b;
  --muted: #5b6675;
  --muted-2: #8a94a6;
  --line: #e7ecf3;
  --line-dark: rgba(255, 255, 255, 0.08);

  --brand: #2563eb;
  --brand-600: #1d4ed8;
  --cyan: #06b6d4;
  --violet: #7c3aed;
  --grad: linear-gradient(120deg, #2563eb 0%, #06b6d4 55%, #38bdf8 100%);
  --grad-soft: linear-gradient(120deg, rgba(37, 99, 235, 0.12), rgba(6, 182, 212, 0.12));

  /* 排版 */
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui,
    -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* 圆角 / 阴影 */
  --r-sm: 10px;
  --r: 16px;
  --r-lg: 24px;
  --shadow-sm: 0 1px 2px rgba(11, 18, 32, 0.06), 0 2px 8px rgba(11, 18, 32, 0.05);
  --shadow: 0 8px 30px rgba(11, 18, 32, 0.08);
  --shadow-lg: 0 24px 60px rgba(11, 18, 32, 0.14);
  --shadow-brand: 0 16px 40px rgba(37, 99, 235, 0.28);

  --maxw: 1200px;
  --header-h: 72px;
}

/* ===================== Reset ===================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a {
  color: inherit;
  text-decoration: none;
}
img,
svg {
  display: block;
  max-width: 100%;
}
h1,
h2,
h3,
h4 {
  margin: 0;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}
p {
  margin: 0;
}
ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
button {
  font-family: inherit;
  cursor: pointer;
}

/* ===================== Layout ===================== */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 96px 0;
  position: relative;
}
.section--soft {
  background: var(--bg-soft);
}
.section--dark {
  background: var(--bg-dark);
  color: #e7ecf6;
  overflow: hidden;
}
.section-head {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 16px;
}
.eyebrow::before,
.eyebrow::after {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--grad);
  border-radius: 2px;
}
.section-title {
  font-size: clamp(28px, 4vw, 42px);
}
.section-sub {
  margin-top: 16px;
  color: var(--muted);
  font-size: 17px;
}
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===================== Buttons ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease,
    border-color 0.18s ease, color 0.18s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: var(--shadow-brand);
  border-color: rgba(37, 99, 235, 0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 48px rgba(37, 99, 235, 0.36);
  border-color: rgba(37, 99, 235, 0.55);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--line-dark);
  color: #e7ecf6;
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
}
.btn-outline {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}
.btn-outline:hover {
  border-color: var(--brand);
  color: var(--brand);
}
.btn-light {
  background: #fff;
  color: var(--brand-600);
  box-shadow: var(--shadow);
}
.btn-light:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
}

/* 产品分系统下载 */
.dl {
  margin-top: auto;
  padding-top: 22px;
}
.dl__row {
  display: flex;
  gap: 10px;
}
.btn-dl {
  flex: 1;
  padding: 11px 10px;
  font-size: 14px;
}

/* ===================== Header ===================== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.2s ease, background 0.2s ease;
}
.header.scrolled {
  box-shadow: var(--shadow-sm);
}
.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
}
.brand__logo {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  flex: none;
}
.brand__logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.brand__name {
  color: var(--ink);
}
.brand__name small {
  display: inline;
  font-size: 11px;
  font-weight: 500;
  color: var(--muted-2);
  letter-spacing: 0.02em;
  margin-left: 3px;
}
.header__cta {
  margin-left: auto;
  padding: 8px 16px;
  font-size: 13px;
  border-radius: 999px;
  line-height: 1.35;
}
.header__chat {
  display: none;
  margin-left: auto;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.header__chat:hover {
  border-color: var(--brand);
  color: var(--brand);
}
.header__chat svg {
  width: 22px;
  height: 22px;
  stroke: var(--ink);
}
.header__chat:hover svg {
  stroke: var(--brand);
}

/* ===================== QR Modal ===================== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.modal.open {
  opacity: 1;
  pointer-events: auto;
}
.modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 23, 0.55);
  backdrop-filter: blur(4px);
}
.modal__panel {
  position: relative;
  width: 100%;
  max-width: 380px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 34px 28px 28px;
  box-shadow: var(--shadow-lg);
  transform: translateY(10px);
  transition: transform 0.25s ease;
}
.modal.open .modal__panel {
  transform: translateY(0);
}
.modal__close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink-2);
  cursor: pointer;
}
.modal__close svg {
  width: 18px;
  height: 18px;
}
.modal__body {
  text-align: center;
}
.modal__body h3 {
  font-size: 20px;
  margin-bottom: 8px;
  color: var(--ink);
}
.modal__hint {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 20px;
}
.modal__qr {
  width: 200px;
  height: 200px;
  margin: 0 auto 18px;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
}
.modal__qr img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.modal__email {
  font-size: 13px;
  color: var(--muted);
}
.modal__email a {
  color: var(--brand);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===================== Hero ===================== */
.hero {
  position: relative;
  background: var(--bg-dark);
  color: #eaf0fb;
  padding: 110px 0 120px;
  overflow: hidden;
}
.hero__grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 40%, transparent 100%);
}
.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  pointer-events: none;
}
.hero__glow.a {
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, #2563eb, transparent 70%);
  top: -120px;
  right: -80px;
}
.hero__glow.b {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, #06b6d4, transparent 70%);
  bottom: -160px;
  left: -100px;
}
.hero__inner {
  position: relative;
  z-index: 2;
  max-width: 880px;
}
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line-dark);
  font-size: 13.5px;
  color: var(--muted);
  margin-bottom: 28px;
}
.badge-pill .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #2563eb;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.18);
}
.hero h1 {
  color: #fff;
  font-size: clamp(34px, 6vw, 60px);
  line-height: 1.12;
  letter-spacing: -0.02em;
}
.hero p.lead {
  margin-top: 24px;
  font-size: clamp(16px, 2.2vw, 20px);
  color: var(--muted);
  max-width: 38em;
}
.hero__actions {
  margin-top: 40px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.hero__meta {
  margin-top: 56px;
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  border-top: 1px solid var(--line-dark);
  padding-top: 32px;
}
.hero__meta div span {
  display: block;
  font-size: 13px;
  color: #8a98b5;
  margin-bottom: 6px;
}
.hero__meta div strong {
  font-size: 22px;
  color: #fff;
  font-weight: 700;
}

/* ===================== Cards / Grid ===================== */
.grid {
  display: grid;
  gap: 24px;
}
.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}
/* 产品网格：自动排列，桌面最多 3 列，窄屏自动换行 */
.grid-auto {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
}
@media (min-width: 980px) {
  .grid-auto {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #d6e0f5;
}
.card__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--grad-soft);
  color: var(--brand);
  margin-bottom: 20px;
}
.card__icon svg {
  width: 26px;
  height: 26px;
}
.card h3 {
  font-size: 19px;
  margin-bottom: 10px;
}
.card p {
  color: var(--muted);
  font-size: 15px;
}
.card .tags {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag {
  font-size: 12.5px;
  padding: 4px 11px;
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--ink-2);
  border: 1px solid var(--line);
}
.badge-free,
.badge-pro {
  font-size: 12.5px;
  padding: 4px 11px;
  border-radius: 999px;
  font-weight: 600;
}
.badge-free {
  background: rgba(16, 185, 129, 0.12);
  color: #059669;
  border: 1px solid rgba(16, 185, 129, 0.32);
}
.badge-pro {
  background: var(--grad-soft);
  color: var(--brand);
  border: 1px solid #d6e0f5;
}

/* feature list */
.feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.feature__ico {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--grad-soft);
  color: var(--brand);
}
.feature__ico svg {
  width: 22px;
  height: 22px;
}
.feature h4 {
  font-size: 17px;
  margin-bottom: 4px;
}
.feature p {
  color: var(--muted);
  font-size: 14.5px;
}

/* ===================== Stats ===================== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat {
  text-align: center;
  padding: 12px;
}
.stat__num {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.02em;
}
.stat__label {
  margin-top: 8px;
  color: #aab6cc;
  font-size: 14.5px;
}

/* ===================== Split / About ===================== */
.split {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
}
.split h2 {
  font-size: clamp(26px, 3.6vw, 38px);
  margin-bottom: 18px;
}
.split p {
  color: var(--muted);
  margin-bottom: 16px;
}
.vision-cards {
  display: grid;
  gap: 16px;
}
.vision {
  display: flex;
  gap: 14px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: #fff;
}
.vision__k {
  font-weight: 700;
  color: var(--brand);
  font-size: 15px;
  flex: none;
  width: 64px;
}
.vision__v {
  font-size: 14.5px;
  color: var(--muted);
}

/* timeline */
.timeline {
  position: relative;
  margin-top: 8px;
  padding-left: 28px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(var(--brand), var(--cyan));
}
.tl-item {
  position: relative;
  padding: 0 0 28px 22px;
}
.tl-item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--brand);
}
.tl-item .yr {
  font-weight: 700;
  color: var(--brand);
  font-size: 15px;
}
.tl-item h4 {
  font-size: 17px;
  margin: 4px 0 4px;
}
.tl-item p {
  color: var(--muted);
  font-size: 14.5px;
}

/* ===================== Products ===================== */
.prod {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.prod-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 32px;
  background: #fff;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.prod-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.prod-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--grad);
}
.prod-card__top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}
.prod-card__logo {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--grad-soft);
  display: grid;
  place-items: center;
  color: var(--brand);
  flex: none;
}
.prod-card__logo svg {
  width: 26px;
  height: 26px;
}
.prod-card h3 {
  font-size: 20px;
}
.prod-card .ver {
  font-size: 12.5px;
  color: var(--muted-2);
  font-weight: 500;
}
.prod-card p {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 18px;
  min-height: 46px;
}
.prod-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}
.prod-meta span {
  font-size: 12.5px;
  color: var(--ink-2);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  padding: 5px 11px;
  border-radius: 8px;
}
.prod-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}
.prod-card__dl {
  font-size: 13px;
  color: var(--muted);
}
.prod-card__dl strong {
  color: var(--ink);
}

/* changelog */
.changelog {
  margin-top: 8px;
  border-left: 2px solid var(--line);
  padding-left: 22px;
}
.cl-item {
  position: relative;
  padding-bottom: 22px;
}
.cl-item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 5px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--brand);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--line);
}
.cl-item .v {
  font-weight: 700;
  color: var(--ink);
}
.cl-item .d {
  font-size: 13px;
  color: var(--muted-2);
  margin-left: 8px;
}
.cl-item ul {
  margin-top: 8px;
  display: grid;
  gap: 5px;
}
.cl-item li {
  font-size: 14px;
  color: var(--muted);
  padding-left: 18px;
  position: relative;
}
.cl-item li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--brand);
  font-weight: 700;
}

/* ===================== Contact ===================== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 48px;
  align-items: start;
}
.info-list {
  display: grid;
  gap: 16px;
}
.info {
  display: flex;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: #fff;
}
.info__ico {
  flex: none;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--grad-soft);
  color: var(--brand);
  display: grid;
  place-items: center;
}
.info__ico svg {
  width: 22px;
  height: 22px;
}
.info h4 {
  font-size: 15px;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 3px;
}
.info p,
.info a {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}
.form {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 34px;
  box-shadow: var(--shadow);
}
.form h3 {
  font-size: 22px;
  margin-bottom: 6px;
}
.form .hint {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 22px;
}
.field {
  margin-bottom: 16px;
}
.field label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 7px;
  color: var(--ink-2);
}
.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-size: 15px;
  font-family: inherit;
  color: var(--ink);
  background: #fff;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}
.field textarea {
  resize: vertical;
  min-height: 110px;
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(107, 121, 206, 0.25);
}
.form .btn {
  width: 100%;
  margin-top: 6px;
}
.form .note {
  margin-top: 14px;
  font-size: 12.5px;
  color: var(--muted-2);
  text-align: center;
}
.map {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  height: 200px;
  background: linear-gradient(135deg, #0a1120, #16306b);
  position: relative;
  display: grid;
  place-items: center;
  color: #cdd7ea;
}
.map::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 32px 32px;
}

/* ===================== CTA band ===================== */
.cta {
  position: relative;
  border-radius: var(--r-lg);
  background: linear-gradient(120deg, #0b1220, #112a5e);
  color: #fff;
  padding: 56px 48px;
  overflow: hidden;
  text-align: center;
}
.cta__glow {
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.45;
  background: radial-gradient(circle, #06b6d4, transparent 70%);
  bottom: -160px;
  left: 50%;
  transform: translateX(-50%);
}
.cta h2 {
  color: #fff;
  font-size: clamp(24px, 3.4vw, 34px);
  position: relative;
}
.cta p {
  color: var(--muted);
  margin: 14px auto 28px;
  max-width: 32em;
  position: relative;
}

/* ===================== Footer ===================== */
.footer {
  background: var(--bg-dark);
  color: var(--muted);
  padding: 64px 0 28px;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 56px;
  align-items: end;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line-dark);
}
.footer__brand {
  max-width: 28em;
}
.footer .brand {
  color: #fff;
  margin-bottom: 18px;
}
.footer .brand__logo {
  width: 32px;
  height: 32px;
}
.footer .brand__name {
  color: #fff;
}
.footer__tagline {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0;
}
.footer__email {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  transition: opacity 0.18s ease;
}
.footer__guide {
  margin-top: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}
.footer__bottom {
  padding-top: 24px;
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  align-items: center;
  gap: 56px;
  font-size: 13.5px;
  color: var(--muted-2);
}
.footer__bottom a {
  color: var(--muted-2);
}
.footer__bottom a:hover {
  color: #fff;
}

/* ===================== Reveal animation ===================== */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.in {
  opacity: 1;
  transform: none;
}
.reveal[data-d="1"] {
  transition-delay: 0.08s;
}
.reveal[data-d="2"] {
  transition-delay: 0.16s;
}
.reveal[data-d="3"] {
  transition-delay: 0.24s;
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
}

/* ===================== Responsive ===================== */
@media (max-width: 980px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .split,
  .contact-grid,
  .prod {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer__top,
  .footer__bottom {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}
@media (max-width: 720px) {
  .section {
    padding: 64px 0;
  }
  .nav,
  .header__cta {
    display: none;
  }
  .header__chat {
    display: inline-flex;
  }
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  .hero {
    padding: 80px 0 90px;
  }
  .hero__meta {
    gap: 24px;
  }
  .footer__top,
  .footer__bottom {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .cta {
    padding: 44px 26px;
  }
}