/* =========================================================
   CarUp Landing Page
   ========================================================= */

:root {
  --bg: #070c17;
  --bg-soft: #0a1120;
  --panel: #101b30;
  --panel-2: #142138;
  --line: rgba(140, 175, 255, 0.12);
  --line-strong: rgba(140, 175, 255, 0.22);
  --text: #f2f6ff;
  --text-soft: #dbe5f8;
  --muted: #93a4c4;
  --muted-2: #7286a8;
  --blue: #3d8bff;
  --blue-light: #7fb6ff;
  --green: #2fd873;
  --green-deep: #14a854;
  --amber: #ffc857;
  --grad: linear-gradient(115deg, #4b95ff 0%, #52c9ff 46%, #35dd83 100%);
  --radius-lg: 26px;
  --radius: 20px;
  --radius-sm: 14px;
  --shadow-lg: 0 36px 90px rgba(2, 7, 18, 0.6);
  --shadow-md: 0 18px 44px rgba(2, 7, 18, 0.45);
  --max-width: 1160px;
  --header-h: 76px;
  --ease: cubic-bezier(0.22, 0.72, 0.2, 1);
}

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

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

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 620px at 12% -8%, rgba(61, 139, 255, 0.2), transparent 62%),
    radial-gradient(760px 560px at 92% 8%, rgba(47, 216, 115, 0.11), transparent 60%),
    radial-gradient(900px 700px at 50% 108%, rgba(61, 139, 255, 0.1), transparent 65%),
    var(--bg);
  pointer-events: none;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 12%, rgba(0, 0, 0, 0.55), transparent 72%);
  -webkit-mask-image: radial-gradient(circle at 50% 12%, rgba(0, 0, 0, 0.55), transparent 72%);
  pointer-events: none;
}

img {
  max-width: 100%;
}

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

h1,
h2,
h3,
h4,
p,
ul,
ol,
dl,
dd,
blockquote {
  margin: 0;
}

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

button {
  font: inherit;
  color: inherit;
}

svg {
  flex-shrink: 0;
}

::selection {
  background: rgba(61, 139, 255, 0.35);
  color: #fff;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: 10px;
  background: var(--blue);
  color: #fff;
  font-size: 14px;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 16px;
}

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

.container-narrow {
  width: min(100% - 48px, 880px);
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 12, 23, 0.72);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.site-header.is-scrolled {
  background: rgba(7, 12, 23, 0.9);
  border-bottom-color: var(--line);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-logo-wrap {
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  overflow: hidden;
  border-radius: 12px;
  background:
    radial-gradient(120% 120% at 20% 12%, rgba(255, 255, 255, 0.5), transparent 42%),
    linear-gradient(145deg, #43e888 0%, #18bb62 52%, #0a7c41 100%);
  box-shadow: 0 8px 22px rgba(47, 216, 115, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.brand-logo {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 占位图片 src 为空时隐藏，避免浏览器显示破损图标 */
img[src=""] {
  visibility: hidden;
}

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

.brand-text strong {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand-text small {
  margin-top: 3px;
  color: var(--muted-2);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav > a {
  position: relative;
  padding: 9px 14px;
  border-radius: 10px;
  color: var(--muted);
  font-size: 14.5px;
  font-weight: 500;
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
}

.nav > a:not(.nav-cta):hover,
.nav > a.is-active {
  color: var(--text);
  background: rgba(140, 175, 255, 0.07);
}

.nav > a.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--green);
  transform: translateX(-50%);
  box-shadow: 0 0 8px rgba(47, 216, 115, 0.9);
}

.nav-cta {
  margin-left: 8px;
  border: 1px solid rgba(120, 170, 255, 0.3);
  background: rgba(61, 139, 255, 0.1);
  color: #d8e8ff !important;
}

.nav-cta:hover {
  background: rgba(61, 139, 255, 0.2) !important;
  border-color: rgba(120, 170, 255, 0.5);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 11px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: rgba(16, 27, 48, 0.8);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 1.8px;
  border-radius: 2px;
  background: var(--text-soft);
  transition: transform 0.25s var(--ease), opacity 0.2s;
}

.site-header.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(6.8px) rotate(45deg);
}

.site-header.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.site-header.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-6.8px) rotate(-45deg);
}

/* ---------- Buttons & links ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 52px;
  padding: 0 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 0.25s var(--ease), background 0.25s, border-color 0.25s, box-shadow 0.25s;
}

.btn-ghost {
  border: 1px solid rgba(120, 170, 255, 0.36);
  background: linear-gradient(180deg, rgba(61, 139, 255, 0.16), rgba(61, 139, 255, 0.07));
  color: #dceaff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.btn-ghost:hover {
  transform: translateY(-2px);
  border-color: rgba(120, 170, 255, 0.6);
  background: linear-gradient(180deg, rgba(61, 139, 255, 0.26), rgba(61, 139, 255, 0.12));
  box-shadow: 0 14px 34px rgba(28, 96, 205, 0.28);
}

.btn-ghost svg {
  transition: transform 0.25s var(--ease);
}

.btn-ghost:hover svg {
  transform: translateY(2px);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-size: 14.5px;
  font-weight: 500;
  transition: color 0.2s, gap 0.25s var(--ease);
}

.link-arrow:hover {
  gap: 11px;
  color: var(--blue-light);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: clamp(48px, 7vw, 86px) 0 clamp(64px, 8vw, 108px);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 1.06fr);
  align-items: center;
  gap: clamp(36px, 5vw, 68px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 14px 7px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(16, 27, 48, 0.6);
  color: var(--text-soft);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px rgba(47, 216, 115, 0.14), 0 0 12px rgba(47, 216, 115, 0.8);
  animation: pulse 2.6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(47, 216, 115, 0.14), 0 0 12px rgba(47, 216, 115, 0.8); }
  50% { box-shadow: 0 0 0 6px rgba(47, 216, 115, 0.06), 0 0 18px rgba(47, 216, 115, 0.55); }
}

.hero h1 {
  margin-top: 22px;
  font-size: clamp(2.45rem, 4.9vw, 4.15rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

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

.lead {
  max-width: 33em;
  margin-top: 22px;
  color: var(--muted);
  font-size: clamp(15px, 1.15vw, 16.5px);
  line-height: 1.8;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 158px;
  padding: 13px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(21, 34, 56, 0.72), rgba(12, 21, 36, 0.6));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.035);
}

.meta-label {
  color: var(--muted-2);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.meta-value {
  color: var(--text);
  font-size: clamp(19px, 1.6vw, 22px);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.meta-item:first-child .meta-value {
  color: var(--blue-light);
}

.meta-item:last-child .meta-value {
  color: #8ce9b1;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px;
  margin-top: 30px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 38px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.hero-stats li {
  display: flex;
  flex-direction: column;
  padding-right: clamp(20px, 3vw, 38px);
}

.hero-stats li + li {
  padding-left: clamp(20px, 3vw, 38px);
  border-left: 1px solid var(--line);
}

.hero-stats strong {
  font-size: clamp(19px, 1.7vw, 23px);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.hero-stats span {
  margin-top: 2px;
  color: var(--muted-2);
  font-size: 12px;
  letter-spacing: 0.03em;
}

/* ---------- Hero screenshot ---------- */

.hero-visual {
  position: relative;
}

.shot-frame {
  position: relative;
  padding: 10px;
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, rgba(90, 150, 255, 0.42), rgba(47, 216, 115, 0.14) 52%, rgba(20, 33, 56, 0.65));
  box-shadow: var(--shadow-lg), 0 0 90px rgba(46, 116, 255, 0.16);
  isolation: isolate;
}

.shot-frame::before {
  content: "";
  position: absolute;
  inset: -22%;
  z-index: -1;
  background: radial-gradient(circle at 65% 35%, rgba(61, 139, 255, 0.28), transparent 55%);
  filter: blur(30px);
  pointer-events: none;
}

.shot-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 8px 14px;
  color: var(--muted);
  font-size: 12px;
}

.shot-dots {
  display: inline-flex;
  gap: 5px;
}

.shot-dots i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
}

.shot-dots i:nth-child(1) { background: rgba(255, 95, 87, 0.7); }
.shot-dots i:nth-child(2) { background: rgba(255, 189, 46, 0.7); }
.shot-dots i:nth-child(3) { background: rgba(39, 201, 63, 0.7); }

.shot-title {
  flex: 1;
  overflow: hidden;
  color: var(--muted);
  letter-spacing: 0.02em;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.shot-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(47, 216, 115, 0.1);
  color: #8ce9b1;
  font-size: 11px;
}

.shot-status i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
}

.shot-body {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(130, 170, 255, 0.16);
  border-radius: 18px;
  background:
    radial-gradient(120% 100% at 18% 12%, rgba(61, 139, 255, 0.32), transparent 58%),
    radial-gradient(110% 120% at 88% 92%, rgba(47, 216, 115, 0.22), transparent 60%),
    linear-gradient(140deg, #0b1526 0%, #101f38 52%, #0a1322 100%);
}

.shot-body::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: radial-gradient(circle at 50% 50%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 20%, transparent 78%);
}

.shot-img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  font-size: 0;
  color: transparent;
}

.float-badge {
  position: absolute;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 15px;
  border: 1px solid rgba(140, 175, 255, 0.24);
  border-radius: 999px;
  background: rgba(9, 17, 31, 0.86);
  color: var(--text-soft);
  font-size: 12px;
  font-weight: 500;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  white-space: nowrap;
}

.float-badge i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.float-blue {
  top: -18px;
  right: 16px;
  animation: floatY 6s ease-in-out infinite;
}

.float-blue i {
  background: var(--blue);
  box-shadow: 0 0 8px var(--blue);
}

.float-green {
  bottom: 26px;
  left: -22px;
  animation: floatY 7s ease-in-out infinite reverse;
}

.float-green i {
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}

.shot-caption {
  margin-top: 16px;
  color: var(--muted-2);
  font-size: 12.5px;
  text-align: center;
  letter-spacing: 0.02em;
}

/* ---------- Sections ---------- */

.section {
  position: relative;
  padding-block: clamp(64px, 8vw, 108px);
}

.section-alt {
  background: linear-gradient(180deg, transparent, rgba(10, 18, 33, 0.6) 18%, rgba(10, 18, 33, 0.6) 82%, transparent);
}

.section-head {
  max-width: 720px;
  margin: 0 auto clamp(38px, 5vw, 60px);
  text-align: center;
}

.section-head h2 {
  margin-top: 18px;
  font-size: clamp(1.75rem, 3.4vw, 2.7rem);
  font-weight: 750;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.section-desc {
  margin-top: 14px;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.8;
}

/* ---------- Features ---------- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  position: relative;
  padding: 28px 26px 26px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(21, 34, 56, 0.86), rgba(11, 20, 35, 0.9));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.035);
  transition: transform 0.3s var(--ease), border-color 0.3s, box-shadow 0.3s;
}

.feature-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 18%;
  right: 18%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(120, 170, 255, 0.55), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md);
}

.feature-card:hover::after {
  opacity: 1;
}

.icon-box {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  border: 1px solid rgba(61, 139, 255, 0.28);
  border-radius: 14px;
  background: linear-gradient(160deg, rgba(61, 139, 255, 0.22), rgba(61, 139, 255, 0.06));
  color: var(--blue-light);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.icon-box svg {
  width: 23px;
  height: 23px;
}

.icon-box.icon-green {
  border-color: rgba(47, 216, 115, 0.26);
  background: linear-gradient(160deg, rgba(47, 216, 115, 0.2), rgba(47, 216, 115, 0.05));
  color: #7fe8a9;
}

.feature-card h3 {
  font-size: 17.5px;
  font-weight: 650;
  letter-spacing: 0.01em;
}

.feature-card p {
  margin-top: 9px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

/* ---------- Tutorial steps ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 26px 24px 28px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(18, 30, 51, 0.85), rgba(10, 18, 32, 0.9));
  transition: transform 0.3s var(--ease), border-color 0.3s;
}

.step::before {
  content: attr(data-step);
  position: absolute;
  top: -14px;
  right: 6px;
  color: rgba(140, 175, 255, 0.07);
  font-size: 74px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  pointer-events: none;
}

.step:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}

.step-num {
  display: inline-block;
  color: var(--blue-light);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.step h3 {
  margin-top: 12px;
  font-size: 18px;
  font-weight: 650;
}

.step p {
  margin-top: 9px;
  color: var(--muted);
  font-size: 13.8px;
  line-height: 1.75;
}

.tutorial-tip {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-top: 26px;
  padding: 18px 22px;
  border: 1px solid rgba(47, 216, 115, 0.2);
  border-radius: var(--radius-sm);
  background: rgba(47, 216, 115, 0.055);
}

.tip-icon {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(47, 216, 115, 0.16);
  color: #8ce9b1;
  font-size: 13px;
  font-weight: 700;
  font-style: italic;
}

.tutorial-tip p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- Experience ---------- */

.exp-list {
  display: flex;
  flex-direction: column;
}

.exp-row {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: clamp(28px, 5vw, 64px);
  padding-block: clamp(30px, 4vw, 52px);
}

.exp-row + .exp-row {
  border-top: 1px solid var(--line);
}

.exp-media {
  position: relative;
  aspect-ratio: 2 / 1;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 22px;
  background:
    radial-gradient(120% 110% at 15% 10%, rgba(61, 139, 255, 0.3), transparent 58%),
    radial-gradient(110% 120% at 88% 92%, rgba(47, 216, 115, 0.18), transparent 60%),
    linear-gradient(145deg, #0b1526, #101f38 55%, #0a1322);
  box-shadow: var(--shadow-md);
}

.exp-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle at 50% 45%, #000 15%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 45%, #000 15%, transparent 78%);
}

.exp-img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  font-size: 0;
  color: transparent;
}

.exp-row.reverse .exp-media {
  order: 2;
}

.exp-text {
  max-width: 480px;
}

.exp-kicker {
  color: var(--blue-light);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.exp-text h3 {
  margin-top: 12px;
  font-size: clamp(1.35rem, 2.3vw, 1.85rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.015em;
}

.exp-text p {
  margin-top: 13px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.check-list {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-top: 20px;
}

.check-list li {
  position: relative;
  padding-left: 26px;
  color: var(--text-soft);
  font-size: 13.8px;
  line-height: 1.6;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  top: 1px;
  left: 0;
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
}

/* ---------- Reviews ---------- */

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.review-card {
  display: flex;
  flex-direction: column;
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(20, 32, 53, 0.86), rgba(11, 20, 35, 0.9));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.035);
  transition: transform 0.3s var(--ease), border-color 0.3s;
}

.review-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}

.stars {
  display: flex;
  gap: 3px;
  color: var(--amber);
  font-size: 14px;
  letter-spacing: 0.08em;
}

.review-quote {
  flex: 1;
  margin-top: 16px;
  color: var(--text-soft);
  font-size: 14.5px;
  line-height: 1.8;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.avatar {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  color: #04101f;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.avatar-blue {
  background: linear-gradient(150deg, #9cc9ff, #4a91ff);
}

.avatar-green {
  background: linear-gradient(150deg, #a4f0c4, #2fd873);
}

.avatar-mix {
  background: linear-gradient(150deg, #b6d5ff, #6fe6b0);
}

.author-meta {
  display: flex;
  flex-direction: column;
  line-height: 1.35;
}

.author-meta strong {
  font-size: 14px;
  font-weight: 650;
}

.author-meta small {
  margin-top: 2px;
  color: var(--muted-2);
  font-size: 12px;
}

/* ---------- FAQ ---------- */

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

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  padding: 22px 2px;
  border: 0;
  background: none;
  color: var(--text);
  font-size: 16.5px;
  font-weight: 550;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  transition: color 0.2s;
}

.faq-q:hover {
  color: var(--blue-light);
}

.faq-q[aria-expanded="true"] {
  color: #fff;
}

.faq-icon {
  position: relative;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: rgba(140, 175, 255, 0.05);
  transition: background 0.25s, border-color 0.25s, transform 0.3s var(--ease);
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 11px;
  height: 1.6px;
  border-radius: 2px;
  background: var(--muted);
  transform: translate(-50%, -50%);
  transition: transform 0.3s var(--ease), opacity 0.2s, background 0.2s;
}

.faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-q[aria-expanded="true"] .faq-icon {
  border-color: rgba(47, 216, 115, 0.4);
  background: rgba(47, 216, 115, 0.12);
}

.faq-q[aria-expanded="true"] .faq-icon::before {
  background: var(--green);
}

.faq-q[aria-expanded="true"] .faq-icon::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(0deg);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease);
}

.faq-a-inner {
  padding: 0 46px 24px 2px;
}

.faq-a-inner p {
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.8;
}

/* ---------- Download ---------- */

.download-section {
  padding-top: clamp(40px, 5vw, 64px);
}

.download-panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(32px, 5vw, 64px);
  padding: clamp(30px, 5vw, 58px);
  overflow: hidden;
  border: 1px solid rgba(120, 170, 255, 0.26);
  border-radius: 32px;
  background:
    radial-gradient(110% 130% at 8% 0%, rgba(61, 139, 255, 0.24), transparent 56%),
    radial-gradient(100% 120% at 94% 100%, rgba(47, 216, 115, 0.18), transparent 58%),
    linear-gradient(160deg, #0e1a2f, #0a1425 60%, #0c1a2b);
  box-shadow: var(--shadow-lg), 0 0 120px rgba(45, 120, 255, 0.12);
}

.download-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  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: 52px 52px;
  mask-image: radial-gradient(circle at 20% 20%, #000, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at 20% 20%, #000, transparent 70%);
  pointer-events: none;
}

.download-main,
.download-aside {
  position: relative;
  z-index: 1;
}

.eyebrow-strong {
  border-color: rgba(47, 216, 115, 0.32);
  background: rgba(47, 216, 115, 0.08);
}

.download-main h2 {
  margin-top: 20px;
  font-size: clamp(1.9rem, 3.8vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.download-desc {
  max-width: 30em;
  margin-top: 16px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.download-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}

.download-meta dt {
  color: var(--muted-2);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.download-meta dd {
  margin-top: 3px;
  color: var(--text);
  font-size: 15.5px;
  font-weight: 650;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 60px;
  margin-top: 34px;
  padding: 0 34px;
  border-radius: 999px;
  background: var(--grad);
  color: #041020;
  font-size: 16.5px;
  font-weight: 750;
  letter-spacing: 0.01em;
  box-shadow: 0 18px 42px rgba(43, 160, 140, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  transition: transform 0.25s var(--ease), box-shadow 0.25s, filter 0.25s;
}

.download-btn:hover {
  transform: translateY(-3px);
  filter: brightness(1.06);
  box-shadow: 0 24px 54px rgba(43, 180, 150, 0.42), inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.download-btn:active {
  transform: translateY(-1px);
}

.download-btn svg {
  transition: transform 0.25s var(--ease);
}

.download-btn:hover svg {
  transform: translateY(2px);
}

.download-note {
  margin-top: 14px;
  color: var(--muted-2);
  font-size: 12px;
  line-height: 1.6;
}

.download-aside {
  align-self: start;
  padding: 26px;
  border: 1px solid var(--line-strong);
  border-radius: 22px;
  background: rgba(9, 17, 31, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.aside-head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.aside-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(47, 216, 115, 0.26);
  border-radius: 11px;
  background: rgba(47, 216, 115, 0.1);
  color: #8ce9b1;
}

.aside-head h3 {
  font-size: 16px;
  font-weight: 650;
}

.aside-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}

.aside-list li {
  position: relative;
  padding-left: 24px;
  color: var(--text-soft);
  font-size: 13.5px;
  line-height: 1.6;
}

.aside-list li::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 2px;
  width: 11px;
  height: 6px;
  border-left: 1.6px solid var(--green);
  border-bottom: 1.6px solid var(--green);
  transform: rotate(-45deg);
}

.aside-foot {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted-2);
  font-size: 12px;
  line-height: 1.65;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 54px 0 34px;
  border-top: 1px solid var(--line);
  background: rgba(6, 10, 20, 0.6);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 36px;
}

.footer-logo-wrap {
  width: 36px;
  height: 36px;
  border-radius: 11px;
}

.footer-brand p {
  max-width: 26em;
  margin-top: 14px;
  color: var(--muted-2);
  font-size: 13px;
  line-height: 1.7;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  padding-top: 6px;
}

.footer-nav a {
  color: var(--muted);
  font-size: 13.5px;
  transition: color 0.2s;
}

.footer-nav a:hover {
  color: var(--blue-light);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  margin-top: 40px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.footer-bottom p {
  color: var(--muted-2);
  font-size: 11.5px;
  line-height: 1.6;
}

/* ---------- Reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}

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

.feature-grid .feature-card:nth-child(2),
.steps .step:nth-child(2),
.review-grid .review-card:nth-child(2) {
  transition-delay: 0.07s;
}

.feature-grid .feature-card:nth-child(3),
.steps .step:nth-child(3),
.review-grid .review-card:nth-child(3) {
  transition-delay: 0.14s;
}

.feature-grid .feature-card:nth-child(4),
.steps .step:nth-child(4) {
  transition-delay: 0.21s;
}

.feature-grid .feature-card:nth-child(5) {
  transition-delay: 0.28s;
}

.feature-grid .feature-card:nth-child(6) {
  transition-delay: 0.35s;
}

/* ---------- Responsive ---------- */

@media (max-width: 1080px) {
  .nav > a {
    padding-inline: 11px;
    font-size: 14px;
  }

  .hero-grid {
    gap: 40px;
  }
}

@media (max-width: 960px) {
  :root {
    --header-h: 68px;
  }

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

  .nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 14px;
    border: 1px solid var(--line-strong);
    border-radius: 20px;
    background: rgba(9, 16, 29, 0.97);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.25s, transform 0.25s var(--ease), visibility 0.25s;
  }

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

  .nav > a {
    padding: 12px 14px;
    border-radius: 12px;
    font-size: 15px;
  }

  .nav > a.is-active::after {
    display: none;
  }

  .nav-cta {
    margin: 6px 0 0;
    text-align: center;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 52px;
  }

  .hero-copy {
    max-width: 640px;
  }

  .hero-visual {
    max-width: 640px;
    width: 100%;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .exp-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  .exp-row.reverse .exp-media {
    order: 0;
  }

  .exp-media {
    max-width: 620px;
  }

  .exp-text {
    max-width: 620px;
  }

  .review-grid {
    grid-template-columns: minmax(0, 1fr);
    max-width: 620px;
    margin-inline: auto;
  }

  .download-panel {
    grid-template-columns: minmax(0, 1fr);
    gap: 34px;
  }

  .download-aside {
    max-width: 520px;
  }
}

@media (max-width: 640px) {
  .container,
  .container-narrow {
    width: min(100% - 36px, var(--max-width));
  }

  body {
    font-size: 15.5px;
  }

  .brand-logo-wrap {
    width: 36px;
    height: 36px;
    border-radius: 11px;
  }

  .brand-text strong {
    font-size: 16.5px;
  }

  .hero {
    padding-top: 36px;
  }

  .eyebrow {
    font-size: 11.5px;
  }

  .hero h1 {
    margin-top: 18px;
    font-size: clamp(2.05rem, 9.4vw, 2.85rem);
    line-height: 1.16;
  }

  .lead {
    margin-top: 18px;
    font-size: 14.8px;
  }

  .hero-meta {
    gap: 10px;
    margin-top: 24px;
  }

  .meta-item {
    flex: 1 1 0;
    min-width: 0;
    padding: 11px 14px;
  }

  .meta-label {
    font-size: 10px;
    letter-spacing: 0.06em;
  }

  .meta-value {
    font-size: 17px;
  }

  .hero-actions {
    gap: 16px;
    margin-top: 26px;
  }

  .btn {
    width: 100%;
    height: 50px;
  }

  .link-arrow {
    margin-inline: auto;
  }

  .hero-stats {
    margin-top: 30px;
    padding-top: 22px;
    gap: 18px 0;
  }

  .hero-stats li {
    flex: 1 1 30%;
    padding-right: 14px;
  }

  .hero-stats li + li {
    padding-left: 14px;
  }

  .hero-stats strong {
    font-size: 17px;
  }

  .hero-stats span {
    font-size: 10.5px;
  }

  .shot-frame {
    padding: 8px;
    border-radius: 20px;
  }

  .shot-bar {
    padding-bottom: 11px;
    font-size: 11px;
  }

  .shot-body {
    border-radius: 14px;
  }

  .float-badge {
    padding: 7px 11px;
    font-size: 10.5px;
  }

  .float-blue {
    top: -14px;
    right: 8px;
  }

  .float-green {
    bottom: 18px;
    left: 8px;
  }

  .shot-caption {
    font-size: 11.5px;
  }

  .section-head {
    margin-bottom: 32px;
    text-align: left;
  }

  .section-head h2 {
    font-size: clamp(1.55rem, 6.5vw, 1.95rem);
  }

  .section-desc {
    font-size: 14.2px;
  }

  .feature-grid,
  .steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .feature-card {
    padding: 24px 22px;
  }

  .step {
    padding: 24px 22px;
  }

  .step::before {
    font-size: 62px;
  }

  .exp-row {
    padding-block: 30px;
  }

  .exp-text h3 {
    font-size: 1.35rem;
  }

  .exp-text p,
  .review-quote {
    font-size: 14px;
  }

  .review-card {
    padding: 24px 22px;
  }

  .faq-q {
    gap: 16px;
    padding: 19px 0;
    font-size: 15px;
  }

  .faq-a-inner {
    padding-right: 12px;
  }

  .faq-a-inner p {
    font-size: 13.8px;
  }

  .download-panel {
    padding: 28px 22px;
    border-radius: 24px;
  }

  .download-main h2 {
    font-size: clamp(1.6rem, 7.2vw, 2.1rem);
  }

  .download-meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 12px;
  }

  .download-btn {
    width: 100%;
    min-height: 56px;
    margin-top: 28px;
    padding: 0 18px;
    font-size: 15.5px;
  }

  .download-aside {
    padding: 22px;
  }

  .footer-inner {
    gap: 26px;
  }

  .footer-nav {
    gap: 8px 18px;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

@media (max-width: 380px) {
  .hero-stats {
    gap: 14px 0;
  }

  .hero-stats li {
    flex-basis: 100%;
    padding: 0 !important;
    border-left: 0 !important;
  }

  .float-badge {
    display: none;
  }
}

/* ---------- Motion preferences ---------- */

@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;
  }

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