:root {
  /* Easing */
  --ease: cubic-bezier(0.2, 0, 0, 1);
  --ease-cinema: cubic-bezier(0.16, 1, 0.3, 1);

  /* Spacing */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 64px;
  --sp-9: 96px;
  --sp-10: 128px;

  /* Fonts */
  --font-ui:
    "DM Sans", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto,
    sans-serif;
  --font-serif: "Instrument Serif", "Noto Serif SC", Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

/* Dark Theme (Default) */
:root[data-theme="dark"] {
  --bg: #0a0b0e;
  --bg-2: #07080b;
  --surface-1: #111217;
  --surface-2: #171921;
  --surface-3: #1f222d;

  --border: rgba(67, 70, 81, 0.5);
  --border-strong: rgba(67, 70, 81, 0.9);
  --border-accent: rgba(94, 234, 212, 0.3);

  --text-1: #ebecef;
  --text-2: #c6c9d2;
  --text-3: #8d909c;
  --text-4: #60636f;

  --accent-cool: #5eead4;
  --accent-cool-hover: #8cf5e3;
  --accent-cool-soft: rgba(94, 234, 212, 0.12);
  --accent-warm: #fb923c;
  --accent-warm-hover: #fdb874;
  --accent-warm-soft: rgba(251, 146, 60, 0.12);

  --gradient-key: linear-gradient(135deg, #5eead4 0%, #fb923c 100%);

  --bg-rgb: 10, 11, 14;
  --accent-cool-rgb: 94, 234, 212;
  --accent-warm-rgb: 251, 146, 60;

  /* Glass nav */
  --nav-bg: rgba(10, 11, 14, 0.55);
  --nav-border: rgba(255, 255, 255, 0.08);
  --nav-shadow:
    0 4px 20px rgba(0, 0, 0, 0.35), 0 1px 0 rgba(255, 255, 255, 0.06) inset;
}

/* Light Theme */
:root[data-theme="light"] {
  --bg: #fafafa;
  --bg-2: #f5f5f5;
  --surface-1: #ffffff;
  --surface-2: #f0f0f0;
  --surface-3: #e8e8e8;

  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.15);
  --border-accent: rgba(94, 234, 212, 0.4);

  --text-1: #0a0a0a;
  --text-2: #4a4a4a;
  --text-3: #6b6b6b;
  --text-4: #9a9a9a;

  --accent-cool: #0d9488;
  --accent-cool-hover: #14b8a6;
  --accent-cool-soft: rgba(13, 148, 136, 0.1);
  --accent-warm: #ea580c;
  --accent-warm-hover: #f97316;
  --accent-warm-soft: rgba(234, 88, 12, 0.1);

  --gradient-key: linear-gradient(135deg, #0d9488 0%, #ea580c 100%);

  --bg-rgb: 250, 250, 250;
  --accent-cool-rgb: 13, 148, 136;
  --accent-warm-rgb: 234, 88, 12;

  /* Glass nav */
  --nav-bg: rgba(255, 255, 255, 0.7);
  --nav-border: rgba(0, 0, 0, 0.08);
  --nav-shadow:
    0 4px 20px rgba(0, 0, 0, 0.08), 0 1px 0 rgba(255, 255, 255, 0.8) inset;
}

/* Smooth theme transition */
*,
*::before,
*::after {
  transition:
    background-color 0.4s var(--ease),
    border-color 0.4s var(--ease),
    color 0.4s var(--ease),
    box-shadow 0.4s var(--ease);
}

/* ---------- Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
[id] {
  scroll-margin-top: 90px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text-1);
  font: 400 15px/1.65 var(--font-ui);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}
img,
svg {
  display: block;
  max-width: 100%;
}
ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
h1,
h2,
h3 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
}
p {
  margin: 0;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}
.eyebrow {
  display: inline-block;
  font: 500 12px/1 var(--font-mono);
  color: var(--text-4);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: var(--sp-5);
}
.section-h2 {
  font: 700 clamp(32px, 4.4vw, 54px)/1.12 var(--font-ui);
  color: var(--text-1);
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-4);
}
.section-sub {
  font: 400 17px/1.6 var(--font-ui);
  color: var(--text-3);
  max-width: 640px;
  margin-bottom: var(--sp-7);
}
.section-head {
  margin-bottom: var(--sp-8);
}

/* ---------- Scroll progress ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-key);
  transform-origin: 0 50%;
  transform: scaleX(0);
  z-index: 100;
  pointer-events: none;
}

/* ---------- 🌫 Glass full-width magnetic bar ---------- */
.nav {
  position: fixed;
  top: 14px;
  left: 0;
  right: 0;
  z-index: 60;
  padding: 0 clamp(16px, 3vw, 28px);
  pointer-events: none;
}
.nav-inner {
  pointer-events: auto;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 10px 8px 20px;
  background: var(--nav-bg);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border: 1px solid var(--nav-border);
  border-radius: 9999px;
  box-shadow: var(--nav-shadow);
  transition:
    box-shadow 0.28s var(--ease),
    background 0.4s var(--ease),
    border-color 0.4s var(--ease);
}
.nav.is-scrolled .nav-inner {
  box-shadow:
    0 10px 40px rgba(0, 0, 0, 0.15),
    0 1px 0 rgba(255, 255, 255, 0.5) inset;
}
.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font: 600 14px/1 var(--font-ui);
  color: var(--text-1);
  letter-spacing: -0.01em;
  padding: 4px 2px;
}
.logo-img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  object-fit: contain;
}
.nav-right {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
/* Theme Toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 9999px;
  color: var(--text-3);
  transition:
    color 0.15s,
    background 0.15s;
}
.theme-toggle:hover {
  background: var(--border);
  color: var(--text-1);
}
.theme-toggle svg {
  width: 16px;
  height: 16px;
}
.theme-toggle .sun-icon {
  display: none;
}
.theme-toggle .moon-icon {
  display: block;
}
:root[data-theme="light"] .theme-toggle .sun-icon {
  display: block;
}
:root[data-theme="light"] .theme-toggle .moon-icon {
  display: none;
}

/* Nav Dropdown */
.nav-dropdown {
  position: relative;
}
.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: 9999px;
  font: 500 13px/1 var(--font-ui);
  color: var(--text-3);
  background: transparent;
  border: none;
  cursor: pointer;
  transition:
    color 0.15s,
    background 0.15s;
}
.nav-dropdown-toggle:hover {
  background: var(--border);
  color: var(--text-1);
}
.nav-dropdown-toggle svg {
  transition: transform 0.2s var(--ease);
}
.nav-dropdown.is-open .nav-dropdown-toggle svg {
  transform: rotate(180deg);
}
.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 120px;
  padding: 6px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition:
    opacity 0.2s var(--ease),
    visibility 0.2s,
    transform 0.2s var(--ease);
  z-index: 100;
}
.nav-dropdown.is-open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown-item {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 6px;
  font: 500 13px/1 var(--font-ui);
  color: var(--text-2);
  text-decoration: none;
  transition:
    color 0.15s,
    background 0.15s;
}

.nav-dropdown-item span{
  display: block;
  margin: 0 auto;
}
.nav-dropdown-item:hover {
  background: var(--surface-2);
  color: var(--text-1);
}

.nav-github {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-1);
  font: 500 12.5px/1 var(--font-ui);
  transition:
    background 0.15s,
    color 0.15s;
}
.nav-github:hover {
  background: var(--accent-cool);
  color: var(--bg);
}

@media (max-width: 520px) {
  .nav-inner {
    padding: 6px 10px 6px 14px;
    gap: 10px;
  }
  .nav-logo span {
    display: none;
  }
  .nav-github span {
    display: none;
  }
}

/* ---------- Buttons ---------- */
.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 9999px;
  font: 500 14px/1 var(--font-ui);
  letter-spacing: -0.005em;
  white-space: nowrap;
  transition:
    transform 0.22s var(--ease),
    background 0.12s var(--ease),
    box-shadow 0.22s var(--ease),
    border-color 0.12s;
}
.btn-primary {
  background: var(--accent-cool);
  color: var(--bg);
  border: 1px solid var(--accent-cool);
}
.btn-primary:hover {
  background: var(--accent-cool-hover);
  box-shadow: 0 8px 28px rgba(var(--accent-cool-rgb), 0.3);
}
.btn-primary:active {
  transform: translateY(1px);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--accent-cool);
  outline-offset: 3px;
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-1);
  border: 1px solid var(--border-strong);
  padding: 11px 19px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--text-3);
}
.btn-ghost:focus-visible {
  outline: 2px solid var(--accent-cool);
  outline-offset: 3px;
}

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 140px 0 100px;
  overflow: hidden;
  isolation: isolate;
}

/* 🔥 GradientBlinds — WebGL shader canvas host (via OGL) */
.gradient-blinds {
  position: absolute;
  inset: 0;
  z-index: -2;
  opacity: 0;
  transition: opacity 1.2s ease-out;
}
.gradient-blinds.is-ready {
  opacity: 1;
}
.gradient-blinds canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* Mobile background image (shown when gradient-blinds is hidden) */
.hero-mobile-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background: url('images/mobile.webp') center center / cover no-repeat;
  opacity: 0;
  transition: opacity 0.6s ease-out;
}
.hero-mobile-bg.is-visible {
  opacity: 1;
}

/* Mobile background overlay for text readability */
.hero-mobile-bg::after {
  content: "";
  position: absolute;
  inset: 0;
        background: linear-gradient(180deg, rgb(255 255 255 / 0%) 0%, #ffffff 50%, rgb(255 255 255 / 0%) 100%);
  z-index: 1;
}

html[data-theme="dark"] .hero-mobile-bg::after {
  background: linear-gradient(175deg, rgb(0 0 0 / 70%) 0%, #000000 50%, rgb(255 255 255 / 0%) 100%);
}

/* Fallback gradient (shown before blinds ready + reduced-motion) */
.gradient-blinds::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      60% 50% at 30% 30%,
      rgba(var(--accent-cool-rgb), 0.22),
      transparent 65%
    ),
    radial-gradient(
      50% 42% at 75% 55%,
      rgba(var(--accent-warm-rgb), 0.18),
      transparent 60%
    ),
    radial-gradient(
      45% 40% at 50% 90%,
      rgba(168, 139, 250, 0.12),
      transparent 60%
    );
  z-index: -1;
}
.gradient-blinds.is-ready::before {
  opacity: 0;
  transition: opacity 0.8s;
}

/* Bottom vignette to blend into page */
.hero-vignette {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 110%, var(--bg) 0%, transparent 60%),
    linear-gradient(
      180deg,
      rgba(var(--bg-rgb), 0.2) 0%,
      transparent 20%,
      transparent 70%,
      rgba(var(--bg-rgb), 0.9) 100%
    );
  pointer-events: none;
  z-index: -1;
}

/* Hero content */
.hero-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 820px;
}
.hero-title {
  font: 700 clamp(44px, 6vw, 84px)/1.05 var(--font-ui);
  letter-spacing: -0.025em;
  color: var(--text-1);
  margin: var(--sp-5) 0 var(--sp-5);
  animation: titleReveal 1.1s cubic-bezier(0.16, 1, 0.3, 1) both;
  animation-delay: 0.15s;
}
@keyframes titleReveal {
  from {
    clip-path: inset(0 100% 0 0);
    transform: translateY(18px);
    opacity: 0;
  }
  to {
    clip-path: inset(0 0 0 0);
    transform: translateY(0);
    opacity: 1;
  }
}
.hero-eyebrow-anim {
  animation: fadeInUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) both;
}
.hero-sub-anim {
  animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.55s both;
}
.hero-ctas-anim {
  animation: fadeInUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.75s both;
}
.hero-steps-anim {
  animation: fadeInUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.95s both;
}
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.key-gradient {
  background: linear-gradient(
    135deg,
    var(--accent-cool),
    var(--accent-warm),
    var(--accent-cool)
  );
  background-size: 300% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientSlide 14s linear infinite;
}
@keyframes gradientSlide {
  to {
    background-position: -300% 0;
  }
}

.hero-sub {
  font: 400 17px/1.7 var(--font-ui);
  color: var(--text-2);
  margin: 0 auto var(--sp-7);
  max-width: 620px;
  text-shadow: 0 1px 20px rgba(0, 0, 0, 0.4);
}
.hero-sub em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--accent-cool);
  font-size: 1.1em;
}
.hero-ctas {
  display: flex;
  justify-content: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
  margin-bottom: var(--sp-7);
}
.hero-steps {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-4);
  flex-wrap: wrap;
  justify-content: center;
  padding: 10px 18px;
  background: rgba(var(--bg-rgb), 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 9999px;
}
.step {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: 500 12px/1 var(--font-mono);
  color: var(--text-3);
}
.step-num {
  color: var(--text-4);
  letter-spacing: 0.06em;
}
.step-sep {
  color: var(--text-4);
  font-family: var(--font-mono);
}

/* ---------- WHY ---------- */
.why {
  padding: var(--sp-10) 0;
}
.why-compare {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--sp-6);
  align-items: stretch;
}
.why-col {
  padding: var(--sp-6);
  border-radius: 16px;
  background: var(--surface-1);
  border: 1px solid var(--border);
}
.why-col-good {
  border-color: var(--border-accent);
  background: linear-gradient(
    160deg,
    var(--surface-1),
    rgba(var(--accent-cool-rgb), 0.04)
  );
}
.why-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 9999px;
  font: 500 11px/1.4 var(--font-mono);
  letter-spacing: 0.04em;
  margin-bottom: var(--sp-5);
}
.why-tag.bad {
  background: var(--surface-3);
  color: var(--text-3);
  border: 1px solid var(--border);
}
.why-tag.good {
  background: var(--accent-cool-soft);
  color: var(--accent-cool);
}
.why-demo {
  padding: var(--sp-4);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  font: 500 13px/1.9 var(--font-mono);
  margin-bottom: var(--sp-5);
}
.code-line {
  color: var(--text-2);
}
.code-line.bad-line {
  opacity: 0.75;
  position: relative;
}
.code-line.bad-line::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: var(--text-4);
}
.code-line.good-line {
  color: var(--text-1);
}
.code-line .comment {
  color: var(--text-4);
}
.code-line .prop {
  color: var(--accent-warm);
}
.code-line .val {
  color: var(--text-2);
}
.code-line .val.accent {
  color: var(--accent-cool);
}
.code-line .sel {
  color: var(--accent-cool);
}
.why-ul li {
  padding: 6px 0;
  font: 400 14px/1.5 var(--font-ui);
  color: var(--text-3);
  border-bottom: 1px solid var(--border);
}
.why-ul li:last-child {
  border-bottom: 0;
}
.why-col-good .why-ul li {
  color: var(--text-2);
}
.why-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  font: 400 italic 20px/1 var(--font-serif);
  color: var(--text-4);
  padding: 0 var(--sp-3);
}
/* 专业特质横条 */
.traits-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  margin-top: var(--sp-8);
  padding: var(--sp-6) var(--sp-7);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 16px;
}
.trait-item {
  flex: 1;
  text-align: center;
  padding: var(--sp-3);
}
.trait-icon {
  width: 28px;
  height: 28px;
  margin: 0 auto var(--sp-3);
  color: var(--accent-cool);
}
.trait-title {
  font: 600 15px/1.3 var(--font-ui);
  color: var(--text-1);
  margin-bottom: 6px;
}
.trait-desc {
  font: 400 13px/1.5 var(--font-ui);
  color: var(--text-3);
}
.trait-sep {
  width: 1px;
  height: 48px;
  background: var(--border);
  flex-shrink: 0;
}
@media (max-width: 900px) {
  .why-compare {
    grid-template-columns: 1fr;
    gap: var(--sp-5);
  }
  .why-divider {
    padding: var(--sp-2) 0;
  }
  .traits-bar {
    flex-wrap: wrap;
    gap: var(--sp-4);
    padding: var(--sp-5);
  }
  .trait-item {
    flex: 1 1 calc(50% - var(--sp-4));
    min-width: 140px;
  }
  .trait-sep {
    display: none;
  }
}

/* ---------- THREE INPUTS ---------- */
.three-inputs {
  padding: var(--sp-10) 0;
}
.inputs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
}
@media (max-width: 1100px) {
  .inputs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 700px) {
  .inputs-grid {
    grid-template-columns: 1fr;
  }
}
.input-item {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition:
    border-color 0.22s var(--ease),
    transform 0.22s var(--ease);
}
.input-item:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}
.input-preview {
  aspect-ratio: 4 / 3;
  position: relative;
  background: var(--bg-2);
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.input-body {
  padding: var(--sp-5) var(--sp-5) var(--sp-6);
}
.input-num {
  font: 500 11px/1 var(--font-mono);
  color: var(--text-4);
  letter-spacing: 0.14em;
  margin-bottom: var(--sp-3);
}
.input-title {
  font: 700 20px/1.3 var(--font-ui);
  color: var(--text-1);
  margin-bottom: var(--sp-3);
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.input-tag {
  display: inline-flex;
  align-items: center;
  font: 500 11px/1 var(--font-ui);
  color: var(--accent-warm);
  background: rgba(251, 146, 60, 0.12);
  padding: 4px 8px;
  border-radius: 4px;
  letter-spacing: 0;
}
.input-desc {
  font: 400 14px/1.6 var(--font-ui);
  color: var(--text-3);
}

.preview-prd {
  padding: 14px 18px;
  font: 500 11px/1.75 var(--font-mono);
  color: var(--text-2);
}
.preview-prd .p-h1 {
  color: var(--text-1);
  font-weight: 700;
  margin-bottom: 4px;
}
.preview-prd .p-h2 {
  color: var(--accent-cool);
  margin-top: 10px;
}
.preview-prd .p-p {
  color: var(--text-3);
}

.preview-url {
  position: relative;
  height: 100%;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.preview-url .url-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  font: 500 10px/1 var(--font-mono);
  color: var(--text-3);
}
.preview-url .url-bar::before {
  content: "";
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cool);
  margin-right: 4px;
}
.preview-url .token-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 500 10.5px/1 var(--font-mono);
  color: var(--text-2);
}
.preview-url .chip {
  width: 14px;
  height: 14px;
  border-radius: 3px;
}

.preview-shot {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
.preview-shot::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 25% 30%, #5eead4 0%, transparent 45%),
    radial-gradient(circle at 75% 65%, #c084fc 0%, transparent 45%),
    radial-gradient(circle at 50% 90%, #fb923c 0%, transparent 45%),
    var(--surface-2);
  filter: saturate(140%);
}

/* 服务卡片渐变背景色 - 三种配色方案（扩散偏移优化） */
/* 配色A: 青绿 + 紫 + 橙 - 适合企业/学生/AI */
.input-item--student .input-preview,
.input-item--gradient-3 .input-preview,
.input-item--gradient-4 .input-preview,
.input-item--gradient-6 .input-preview {
  background:
    radial-gradient(circle at 15% 20%, #5eead4 0%, transparent 55%),
    radial-gradient(circle at 85% 75%, #c084fc 0%, transparent 55%),
    radial-gradient(circle at 60% 95%, #fb923c 0%, transparent 50%),
    var(--surface-2);
  filter: saturate(140%);
}
/* 配色B: 琥珀 + 粉 + 紫 - 适合 redesign/模板 */
.input-item--gradient-2 .input-preview,
.input-item--gradient-5 .input-preview {
  background:
    radial-gradient(circle at 10% 25%, #f59e0b 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, #ec4899 0%, transparent 55%),
    radial-gradient(circle at 40% 40%, #8b5cf6 0%, transparent 50%),
    var(--surface-2);
  filter: saturate(140%);
}
/* 配色C: 保留空位或用于未来扩展 */
/* .input-item--gradient-X 可在此添加新配色 */
.preview-prd--student {
  padding: 14px 18px;
  font: 500 11px/1.75 var(--font-mono);
  color: var(--text-2);
}
.preview-shot .shot-anno {
  position: absolute;
  top: 14px;
  left: 16px;
  padding: 4px 10px;
  background: rgba(var(--bg-rgb), 0.7);
  backdrop-filter: blur(6px);
  border-radius: 999px;
  font: 500 11px/1 var(--font-mono);
  color: var(--text-1);
  z-index: 2;
}
@media (max-width: 900px) {
  .inputs-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- EXTRAS ---------- */
.extras {
  padding: var(--sp-10) 0;
  background: var(--bg-2);
}
.extras-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
}
.extra-item {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: var(--sp-6);
  transition:
    border-color 0.22s var(--ease),
    transform 0.22s var(--ease);
}
.extra-item:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}
.extra-icon {
  width: 32px;
  height: 32px;
  color: var(--accent-cool);
  margin-bottom: var(--sp-4);
}
.extra-title {
  font: 700 20px/1.3 var(--font-ui);
  color: var(--text-1);
  margin-bottom: var(--sp-3);
  letter-spacing: -0.01em;
}
.extra-desc {
  font: 400 14px/1.6 var(--font-ui);
  color: var(--text-3);
}
@media (max-width: 900px) {
  .extras-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- WORKFLOW ---------- */
.workflow {
  padding: var(--sp-10) 0;
}
.phases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-5);
  position: relative;
}
.phases-grid::before {
  content: "";
  position: absolute;
  top: 60px;
  left: 12%;
  right: 12%;
  height: 1px;
  background: linear-gradient(
    90deg,
    var(--border-accent),
    rgba(251, 146, 60, 0.35)
  );
  z-index: 0;
}
@media (max-width: 1100px) {
  .phases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .phases-grid::before {
    display: none;
  }
}
@media (max-width: 700px) {
  .phases-grid {
    grid-template-columns: 1fr;
  }
}
.phase-card {
  position: relative;
  padding: var(--sp-4);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition:
    border-color 0.22s var(--ease),
    transform 0.22s var(--ease);
  z-index: 1;
}
.phase-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}
.phase-card--highlight {
  border-color: var(--border-accent);
  background: linear-gradient(
    160deg,
    var(--surface-1),
    rgba(var(--accent-cool-rgb), 0.08)
  );
  box-shadow:
    0 0 0 1px var(--border-accent),
    0 8px 32px -8px rgba(var(--accent-cool-rgb), 0.15);
}
.phase-card--highlight .phase-badge {
  background: var(--accent-cool);
  color: var(--bg);
}
.phase-card--highlight .phase-step-name {
  color: var(--accent-cool);
}
.phase-card-head {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
}
.phase-badge {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-cool);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font: 700 italic 20px/1 var(--font-serif);
}
.phase-step-label {
  font: 500 11px/1 var(--font-mono);
  color: var(--text-4);
  letter-spacing: 0.14em;
  margin-bottom: 4px;
}
.phase-step-name {
  font: 700 20px/1.2 var(--font-ui);
  color: var(--text-1);
  letter-spacing: -0.01em;
}
.phase-desc {
  font: 400 14px/1.6 var(--font-ui);
  color: var(--text-3);
  margin-bottom: var(--sp-4);
}
.phase-out {
  padding: var(--sp-4);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  font: 500 12px/1.7 var(--font-mono);
  color: var(--text-2);
}
.phase-out .po-h {
  color: var(--accent-cool);
  margin-bottom: 6px;
}
.phase-out .po-list li {
  color: var(--text-3);
  padding: 1px 0;
}
@media (max-width: 900px) {
  .phases-grid {
    grid-template-columns: 1fr;
  }
  .phases-grid::before {
    display: none;
  }
}

/* ---------- 🎡 ROLLING GALLERY (Flat carousel) ---------- */
.whats-inside {
  padding: var(--sp-10) 0 var(--sp-9);
}
.rolling-gallery {
  position: relative;
  width: 100%;
  overflow: hidden;
  user-select: none;
  isolation: isolate;
  margin-top: var(--sp-5);
}

.rolling-viewport {
  width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
  cursor: grab;
}
.rolling-viewport::-webkit-scrollbar {
  display: none;
}
.rolling-viewport:active {
  cursor: grabbing;
}

.rolling-track {
  display: flex;
  gap: var(--sp-5);
  padding: var(--sp-5) var(--sp-6);
  width: max-content;
}
.rolling-track.dragging {
  cursor: grabbing;
}

.rolling-face {
  flex: 0 0 auto;
  width: 380px;
  height: 260px;
}
.rolling-card {
  position: relative;
  width: 100%;
  height: 100%;
  padding: 22px 24px 24px;
  border-radius: 18px;
  border: 1px solid var(--border-strong);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s var(--ease);
}
.rolling-card:hover {
  transform: scale(1.03);
}
.rolling-card::before {
  content: "";
  position: absolute;
  inset: 0;
  filter: saturate(140%);
  z-index: -1;
}
.rolling-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(var(--bg-rgb), 0.1) 0%,
    rgba(var(--bg-rgb), 0.85) 80%
  );
  z-index: -1;
}
.rolling-card.card-1::before {
  background:
    radial-gradient(circle at 30% 35%, var(--accent-cool) 0%, transparent 48%),
    radial-gradient(circle at 72% 65%, var(--accent-warm) 0%, transparent 46%),
    var(--surface-1);
}
.rolling-card.card-2::before {
  background:
    radial-gradient(circle at 20% 30%, #f59e0b 0%, transparent 40%),
    radial-gradient(circle at 70% 70%, #ec4899 0%, transparent 45%),
    var(--surface-1);
}
.rolling-card.card-3::before {
  background:
    radial-gradient(circle at 30% 50%, #8b5cf6 0%, transparent 45%),
    radial-gradient(circle at 75% 50%, var(--accent-cool) 0%, transparent 40%),
    var(--surface-1);
}
.rolling-card.card-4::before {
  background:
    radial-gradient(circle at 30% 35%, var(--accent-warm) 0%, transparent 48%),
    radial-gradient(circle at 70% 60%, #fbbf24 0%, transparent 42%),
    var(--surface-1);
}
.rolling-card.card-5::before {
  background:
    radial-gradient(circle at 25% 40%, #10b981 0%, transparent 45%),
    radial-gradient(circle at 70% 55%, #3b82f6 0%, transparent 42%),
    var(--surface-1);
}
.rolling-card.card-6::before {
  background:
    radial-gradient(circle at 25% 40%, var(--accent-cool) 0%, transparent 42%),
    radial-gradient(circle at 75% 55%, #0ea5e9 0%, transparent 45%),
    var(--surface-1);
}

.rc-num {
  font: 500 11px/1 var(--font-mono);
  color: var(--text-4);
  letter-spacing: 0.14em;
  margin-bottom: var(--sp-3);
}
.rc-title {
  font: 700 22px/1.25 var(--font-ui);
  color: var(--text-1);
  margin-bottom: var(--sp-3);
  letter-spacing: -0.01em;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
}
.rc-body {
  font: 400 13.5px/1.55 var(--font-ui);
  color: var(--text-2);
  margin-bottom: auto;
  padding-bottom: var(--sp-3);
}
.rc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.rolling-hint {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  font: 500 11px/1 var(--font-mono);
  color: var(--text-4);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  z-index: 4;
}

@media (max-width: 640px) {
  .rolling-face {
    width: 300px;
    height: 200px;
  }
  .rolling-track {
    padding: var(--sp-4);
    gap: var(--sp-4);
  }
}

/* ---------- REVERSE IMAGE TRACK ---------- */
.rolling-gallery--images {
  margin-top: var(--sp-4);
}
.rolling-track--reverse {
  animation-direction: reverse;
}
.rolling-face--image {
  flex: 0 0 auto;
  width: 380px;
  height: 220px;
}
.rolling-image-card {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 18px;
  border: 1px solid var(--border-strong);
  overflow: hidden;
  transition: transform 0.3s var(--ease);
}
.rolling-image-card:hover {
  transform: scale(1.03);
}
.rolling-image-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---------- SHOWCASE ACTIONS ---------- */
.showcase-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
  padding-bottom: var(--sp-4);
}
.showcase-actions__hint {
  margin-top: var(--sp-3);
  font: 400 14px/1.5 var(--font-ui);
  color: var(--text-4);
}
.showcase-actions__btns {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  justify-content: center;
}
.btn--social {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 9999px;
  font: 500 14px/1 var(--font-ui);
  text-decoration: none;
  transition: all 0.22s var(--ease);
  border: 1px solid var(--border-strong);
  background: var(--surface-1);
  color: var(--text-1);
}
.btn--social:hover {
  transform: translateY(-2px);
  border-color: var(--border-accent);
  background: var(--surface-2);
}
.btn--douyin:hover {
  border-color: #000;
}
.btn--xiaohongshu:hover {
  color: #ff2442;
  border-color: #ff2442;
}
@media (max-width: 640px) {
  .showcase-actions__btns {
    flex-direction: column;
    width: 100%;
    max-width: 280px;
  }
  .btn--social {
    justify-content: center;
  }
}

/* ---------- TAGS ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 9999px;
  background: var(--accent-cool-soft);
  color: var(--accent-cool);
  font: 500 10.5px/1.4 var(--font-mono);
  letter-spacing: 0.04em;
}
.tag.tag-warm {
  background: var(--accent-warm-soft);
  color: var(--accent-warm);
}

/* ---------- 🌐 DOME GALLERY (ported from react-bits DomeGallery, MIT) ---------- */
.showcase {
  overflow: hidden;
}

.dome-root {
  position: relative;
  width: 100%;
  height: 820px;
  margin-top: var(--sp-6);
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
  /* DomeGallery tokens — align with react-bits reference */
  --segments-x: 35;
  --segments-y: 35;
  --radius: 680px;
  --viewer-pad: 64px;
  --overlay-blur-color: var(--bg);
  --tile-radius: 10px;
  /* derived */
  --circ: calc(var(--radius) * 3.14);
  --rot-y: calc((360deg / var(--segments-x)) / 2);
  --rot-x: calc((360deg / var(--segments-y)) / 2);
  --item-width: calc(var(--circ) / var(--segments-x));
  --item-height: calc(var(--circ) / var(--segments-y));
}
.dome-root * {
  box-sizing: border-box;
}
.dome-sphere,
.dome-tile,
.dome-tile-inner {
  transform-style: preserve-3d;
}

.dome-main {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: transparent;
  cursor: grab;
}
.dome-main.dragging {
  cursor: grabbing;
}

.dome-stage {
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
  perspective: calc(var(--radius) * 2);
  perspective-origin: 50% 50%;
  contain: layout paint size;
}

.dome-sphere {
  transform: translateZ(calc(var(--radius) * -1));
  will-change: transform;
}

.dome-overlay,
.dome-overlay--blur {
  position: absolute;
  inset: 0;
  margin: auto;
  z-index: 3;
  pointer-events: none;
}
.dome-overlay {
  background-image: radial-gradient(
    rgba(var(--bg-rgb), 0) 60%,
    var(--overlay-blur-color) 100%
  );
}
.dome-overlay--blur {
  -webkit-mask-image: radial-gradient(
    rgba(var(--bg-rgb), 0) 68%,
    var(--overlay-blur-color) 92%
  );
  mask-image: radial-gradient(
    rgba(var(--bg-rgb), 0) 68%,
    var(--overlay-blur-color) 92%
  );
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}
.dome-edge {
  position: absolute;
  left: 0;
  right: 0;
  height: 120px;
  z-index: 5;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    transparent,
    var(--overlay-blur-color)
  );
}
.dome-edge--top {
  top: 0;
  transform: rotate(180deg);
}
.dome-edge--bottom {
  bottom: 0;
}

/* The tile lives on the sphere surface */
.dome-tile {
  width: calc(var(--item-width) * var(--item-size-x, 2));
  height: calc(var(--item-height) * var(--item-size-y, 2));
  position: absolute;
  top: -999px;
  bottom: -999px;
  left: -999px;
  right: -999px;
  margin: auto;
  transform-origin: 50% 50%;
  backface-visibility: hidden;
  transform: rotateY(
      calc(var(--rot-y) * (var(--offset-x) + ((var(--item-size-x, 2) - 1) / 2)))
    )
    rotateX(
      calc(var(--rot-x) * (var(--offset-y) - ((var(--item-size-y, 2) - 1) / 2)))
    )
    translateZ(var(--radius));
}
.dome-tile-inner {
  position: absolute;
  inset: 10px;
  border-radius: var(--tile-radius);
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
  transform: translateZ(0);
}

/* Card visuals — pure color swatches (placeholders, no label overlay) */
.dome-card {
  position: absolute;
  inset: 0;
  filter: saturate(110%);
}

/* Image tiles — website screenshots */
.dome-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center; /* 展示首屏上半部分 */
  display: block;
  background: var(--surface-1); /* 图片未加载时的占位色 */
  pointer-events: none;
}
.dome-card.sc-a {
  background:
    radial-gradient(circle at 30% 40%, var(--accent-cool), transparent 50%),
    radial-gradient(circle at 70% 60%, var(--accent-warm), transparent 45%),
    var(--surface-1);
}
.dome-card.sc-b {
  background:
    radial-gradient(circle at 30% 40%, #ece7de, transparent 40%),
    radial-gradient(circle at 70% 60%, #e8682a, transparent 45%),
    var(--surface-2);
}
.dome-card.sc-c {
  background:
    radial-gradient(circle at 50% 40%, #2563eb, transparent 45%),
    radial-gradient(circle at 50% 80%, #f59e0b, transparent 45%),
    var(--surface-1);
}
.dome-card.sc-d {
  background:
    radial-gradient(circle at 30% 40%, #c45c3c, transparent 45%),
    radial-gradient(circle at 70% 70%, #2c5f6e, transparent 40%),
    var(--surface-2);
}
.dome-card.sc-e {
  background:
    radial-gradient(circle at 50% 40%, #0066ff, transparent 35%),
    var(--surface-1);
}
.dome-card.sc-f {
  background:
    radial-gradient(circle at 30% 40%, #00d4ff, transparent 45%),
    radial-gradient(circle at 70% 60%, #8b5cf6, transparent 40%),
    var(--surface-1);
}
.dome-card.sc-g {
  background:
    radial-gradient(circle at 30% 40%, #ece7de, transparent 45%),
    radial-gradient(
      circle at 70% 60%,
      var(--accent-warm-hover),
      transparent 45%
    ),
    var(--surface-2);
}
.dome-card.sc-h {
  background:
    radial-gradient(circle at 30% 40%, #ff3366, transparent 45%),
    radial-gradient(circle at 70% 70%, #ffd700, transparent 45%),
    var(--surface-2);
}
.dome-card.sc-i {
  background:
    radial-gradient(circle at 30% 40%, #a78bfa, transparent 50%),
    radial-gradient(circle at 70% 60%, var(--accent-cool), transparent 40%),
    var(--surface-1);
}
.dome-card.sc-j {
  background:
    radial-gradient(circle at 30% 40%, #5b8c5a, transparent 45%),
    radial-gradient(circle at 70% 60%, #c4956a, transparent 45%),
    var(--surface-2);
}

.dome-palette {
  display: none;
}

.dome-hint {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  font: 500 11px/1 var(--font-mono);
  color: var(--text-4);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  z-index: 6;
  pointer-events: none;
}

@media (max-width: 640px) {
  .dome-root {
    height: 600px;
    --radius: 440px;
    --viewer-pad: 24px;
  }
}

/* ---------- 👤 MADE BY — author card ---------- */
.author {
  padding: var(--sp-10) 0 var(--sp-8);
  position: relative;
}
.author::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 50% 50% at 50% 50%,
    rgba(var(--accent-warm-rgb), 0.05),
    transparent 70%
  );
  pointer-events: none;
  z-index: -1;
}

/* Narrow centered column — no .container */
.author-inner {
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
  display:  flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.author-inner .eyebrow {
  margin-bottom: var(--sp-5);
}

.author-avatar {
  width: 96px;
  height: 96px;
  flex: none;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--border-strong);
  box-shadow:
    0 0 0 4px rgba(var(--bg-rgb), 0.6),
    0 12px 40px rgba(0, 0, 0, 0.3);
  background: var(--surface-1);
  margin-bottom: var(--sp-5);
  transition:
    transform 0.3s var(--ease),
    border-color 0.3s var(--ease),
    box-shadow 0.3s var(--ease);
}
.author-avatar:hover {
  transform: scale(1.04);
  border-color: var(--accent-cool);
}
.author-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.author-name {
  font: 700 26px/1.25 var(--font-ui);
  color: var(--text-1);
  letter-spacing: -0.01em;
  margin: 0 0 var(--sp-4);
}

.author-bio {
  font: 400 15px/1.7 var(--font-ui);
  color: var(--text-3);
  margin: 0 0 var(--sp-6);
}

.author-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
}

.author-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-strong);
  color: var(--text-2);
  font: 500 13px/1 var(--font-ui);
  white-space: nowrap;
  transition:
    background 0.15s,
    color 0.15s,
    border-color 0.15s,
    transform 0.15s;
}
.author-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-1);
  border-color: var(--text-3);
  transform: translateY(-1px);
}
.author-btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  justify-content: center;
}

.author-btn-dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 5px;
  background: var(--text-2);
  color: var(--bg);
  font: 700 10px/1 var(--font-ui);
  flex: none;
  transition: background 0.15s;
}
.author-btn:hover .author-btn-dot {
  background: var(--text-1);
}

@media (max-width: 520px) {
  .author-avatar {
    width: 84px;
    height: 84px;
  }
  .author-name {
    font-size: 22px;
  }
  .author-btn {
    font-size: 12px;
    padding: 8px 14px;
  }
}

/* ---------- INSTALL ---------- */
.install {
  padding: var(--sp-10) 0;
  text-align: center;
  position: relative;
}
.install::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 60% 60% at 50% 30%,
    rgba(var(--accent-cool-rgb), 0.08),
    transparent 70%
  );
  pointer-events: none;
  z-index: -1;
}
.install-inner {
  max-width: 760px;
  margin: 0 auto;
}
.install-title {
  font: 700 clamp(40px, 5.6vw, 72px)/1.05 var(--font-ui);
  letter-spacing: -0.025em;
  color: var(--text-1);
  margin: var(--sp-5) 0 var(--sp-4);
}
.install-title em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--accent-cool);
  font-size: 1.1em;
}
.install .section-sub {
  margin: 0 auto var(--sp-7);
  text-align: center;
}

.codeblock {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--surface-1);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  font: 500 14px/1 var(--font-mono);
  text-align: left;
  max-width: 620px;
  margin: 0 auto var(--sp-5);
  overflow: hidden;
}
.codeblock .prompt {
  color: var(--text-4);
  user-select: none;
  flex: none;
}
.codeblock .cmd {
  flex: 1;
  color: var(--text-1);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.copy-btn {
  position: relative;
  flex: none;
  padding: 6px 12px;
  font: 500 11px/1 var(--font-mono);
  color: var(--text-3);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition:
    color 0.12s,
    border-color 0.12s,
    background 0.12s,
    transform 0.3s var(--ease-cinema);
}
.copy-btn:hover {
  color: var(--accent-cool);
  border-color: var(--accent-cool);
}
.copy-btn.is-copied {
  color: var(--accent-cool);
  border-color: var(--accent-cool);
  background: var(--accent-cool-soft);
  animation: copyPulse 0.6s var(--ease-cinema);
}
@keyframes copyPulse {
  0% {
    transform: scale(1);
  }
  40% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

.copy-toast {
  position: absolute;
  top: -38px;
  left: 50%;
  transform: translate(-50%, 6px);
  padding: 6px 12px;
  background: var(--accent-cool);
  color: var(--bg);
  border-radius: 8px;
  font: 600 11px/1 var(--font-mono);
  letter-spacing: 0.04em;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition:
    transform 0.3s var(--ease-cinema),
    opacity 0.3s;
  z-index: 10;
}
.copy-toast::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -4px;
  transform: translateX(-50%) rotate(45deg);
  width: 8px;
  height: 8px;
  background: var(--accent-cool);
}
.copy-toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.copy-spark {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-cool);
  pointer-events: none;
  animation: sparkBurst 0.6s ease-out forwards;
  z-index: 10;
}
@keyframes sparkBurst {
  0% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
  100% {
    transform: translate(calc(-50% + var(--dx)), calc(-50% + var(--dy)))
      scale(0);
    opacity: 0;
  }
}

.install-req {
  font: 500 13px/1.5 var(--font-mono);
  color: var(--text-4);
  margin-bottom: var(--sp-7);
}
.install-req a {
  color: var(--accent-cool);
}
.install-ctas {
  display: flex;
  gap: var(--sp-3);
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Footer ---------- */
.footer {
  padding: var(--sp-9) 0 var(--sp-7);
  border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--sp-7);
}
.footer-title {
  font: 700 18px/1.2 var(--font-ui);
  color: var(--text-1);
  margin-bottom: var(--sp-3);
  letter-spacing: -0.01em;
}
.footer-tag {
  font: 500 13px/1 var(--font-mono);
  color: var(--text-3);
  margin-bottom: var(--sp-4);
}
.footer-meta {
  font: 400 13px/1 var(--font-ui);
  color: var(--text-4);
}
.footer-h {
  font: 500 11px/1 var(--font-mono);
  color: var(--text-4);
  letter-spacing: 0.14em;
  margin-bottom: var(--sp-3);
  text-transform: uppercase;
}
.footer-list li {
  padding: 4px 0;
  font: 400 14px/1.5 var(--font-ui);
  color: var(--text-3);
}
.footer-list a {
  color: var(--text-3);
  transition: color 0.12s;
}
.footer-list a:hover {
  color: var(--accent-cool);
}
@media (max-width: 760px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-5);
  }
}


.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.7s var(--ease-cinema),
    transform 0.8s var(--ease-cinema);
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children inside a revealed section-head */
.section-head.reveal.in-view .eyebrow {
  animation: revealUp 0.7s var(--ease-cinema) both;
}
.section-head.reveal.in-view .section-h2 {
  animation: revealUp 0.8s var(--ease-cinema) 0.08s both;
}
.section-head.reveal.in-view .section-sub {
  animation: revealUp 0.8s var(--ease-cinema) 0.16s both;
}

@keyframes revealUp {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
  .key-gradient {
    animation: none;
    background-position: 0 0;
  }
  .gradient-blinds {
    display: none;
  }
  .marquee-track {
    animation: none;
  }
}

/* ---------- Mobile ---------- */
@media (max-width: 768px) {
  .gradient-blinds {
    display: none;
  }
  .hero-mobile-bg {
    opacity: 1;
  }
}

@media (max-width: 640px) {
  .hero-title {
    font-size: clamp(36px, 10vw, 52px);
  }
  .hero-steps {
    gap: var(--sp-4);
  }
  .step-sep {
    display: none;
  }
}