/* AD168 marketing site — warm paper, ink, brand red + gold. Light and dark; EN + 简体中文. */

@font-face {
  font-family: 'Geist Variable';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url('fonts/geist-latin-wght-normal.woff2') format('woff2-variations');
}

@property --angle {
  syntax: '<angle>';
  inherits: false;
  initial-value: 0deg;
}

:root {
  --font: 'Geist Variable', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB',
    'Microsoft YaHei', 'Noto Sans SC', sans-serif;

  --red: #db0e00;
  --red-hover: #bf0c00;
  --red-text: oklch(0.5 0.21 29);
  --gold: #ffb83e;
  --gold-hover: #ffc965;
  --gold-ink: oklch(0.32 0.06 70);

  --bg: oklch(0.986 0.004 85);
  --bg-soft: oklch(0.962 0.006 85);
  --card: oklch(1 0 0);
  --ink: oklch(0.21 0.012 60);
  --ink-2: oklch(0.43 0.012 65);
  --line: oklch(0.905 0.007 85);
  --line-strong: oklch(0.85 0.008 85);
  --ok: oklch(0.5 0.13 155);

  --shadow-sm: 0 1px 2px oklch(0.2 0.02 60 / 0.06), 0 1px 3px oklch(0.2 0.02 60 / 0.06);
  --shadow-lg: 0 30px 80px -20px oklch(0.2 0.03 40 / 0.28), 0 12px 30px -12px oklch(0.2 0.03 40 / 0.18);
  --glass: oklch(1 0 0 / 0.78);

  --ch-facebook: #1877f2;
  --ch-instagram: #e1306c;
  --ch-threads: var(--ink);
  --ch-tiktok: var(--ink);
  --ch-linkedin: #0a66c2;
  --ch-pinterest: #e60023;
  --ch-snapchat: #f5d800;
  --ch-youtube: #ff0000;

  --r: 14px;
  --r-lg: 22px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --nav-h: 68px;
  color-scheme: light;
}

:root[data-theme='dark'] {
  --bg: oklch(0.155 0.006 60);
  --bg-soft: oklch(0.19 0.007 60);
  --card: oklch(0.205 0.008 60);
  --ink: oklch(0.965 0.004 85);
  --ink-2: oklch(0.76 0.01 80);
  --line: oklch(1 0 0 / 0.1);
  --line-strong: oklch(1 0 0 / 0.18);
  --red-text: oklch(0.74 0.17 30);
  --ok: oklch(0.75 0.14 155);
  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.4);
  --shadow-lg: 0 30px 80px -20px oklch(0 0 0 / 0.7), 0 12px 30px -12px oklch(0 0 0 / 0.5);
  --glass: oklch(0.22 0.008 60 / 0.78);
  color-scheme: dark;
}

/* Sections that are dark in both themes */
.on-dark {
  --bg: oklch(0.15 0.012 40);
  --card: oklch(0.21 0.014 40);
  --ink: oklch(0.97 0.004 85);
  --ink-2: oklch(0.8 0.01 80);
  --line: oklch(1 0 0 / 0.12);
  --line-strong: oklch(1 0 0 / 0.2);
  color: var(--ink);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  font-feature-settings: 'cv11', 'ss01';
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

img,
svg {
  display: block;
  max-width: 100%;
}
img {
  height: auto;
}
a {
  color: inherit;
}
h1,
h2,
h3,
h4,
p,
ul,
ol,
dl,
dd {
  margin: 0;
}
ul,
ol {
  padding: 0;
  list-style: none;
}
button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}
button {
  cursor: pointer;
}
[hidden] {
  display: none !important;
}

:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
  border-radius: 6px;
}
.on-dark :focus-visible {
  outline-color: var(--gold);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 32px);
}

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

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--ink);
  color: var(--bg);
  transform: translateY(-200%);
}
.skip-link:focus {
  transform: none;
}

.anchor {
  position: absolute;
  top: 0;
}

.ic {
  width: 1.15em;
  height: 1.15em;
  flex: none;
}

/* ------------------------------------------------------------------ brand colours */
.b-facebook { color: var(--ch-facebook); }
.b-instagram { color: var(--ch-instagram); }
.b-threads { color: var(--ch-threads); }
.b-tiktok { color: var(--ch-tiktok); }
.b-linkedin { color: var(--ch-linkedin); }
.b-pinterest { color: var(--ch-pinterest); }
.b-snapchat { color: var(--ch-snapchat); filter: drop-shadow(0 0 0.6px oklch(0.3 0.05 90)); }
.b-youtube { color: var(--ch-youtube); }
.b-shopify { color: #7ab55c; }
.b-woocommerce { color: #96588a; }
.b-amazon { color: #ff9900; }
.b-ebay { color: #e53238; }
.on-dark .b-threads,
.on-dark .b-tiktok { color: oklch(0.97 0.004 85); }

/* ------------------------------------------------------------------ buttons */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  isolation: isolate;
  transition: transform 0.25s var(--ease), background-color 0.2s, border-color 0.2s, box-shadow 0.25s;
}
.btn:active {
  transform: translateY(1px) scale(0.99);
}
.btn-lg {
  min-height: 52px;
  padding: 0 24px;
  font-size: 1rem;
  border-radius: 14px;
}
.btn-block {
  width: 100%;
}
.btn .ic {
  transition: transform 0.25s var(--ease);
}
.btn:hover .ic:last-child {
  transform: translateX(3px);
}

.btn-primary {
  color: #fff;
  background: var(--red);
  box-shadow: 0 8px 22px -8px oklch(0.55 0.22 29 / 0.7), inset 0 1px 0 oklch(1 0 0 / 0.18);
}
.btn-primary:hover {
  background: var(--red-hover);
  transform: translateY(-1px);
}
.btn-primary::after,
.btn-gold::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(105deg, transparent 35%, oklch(1 0 0 / 0.32) 50%, transparent 65%);
  transform: translateX(-120%);
}
.btn-primary:hover::after,
.btn-gold:hover::after {
  transform: translateX(120%);
  transition: transform 0.8s var(--ease);
}

.btn-gold {
  color: var(--gold-ink);
  background: var(--gold);
  box-shadow: 0 10px 30px -10px oklch(0.8 0.16 76 / 0.7);
}
.btn-gold:hover {
  background: var(--gold-hover);
  transform: translateY(-1px);
}

.btn-ghost {
  color: var(--ink);
  background: var(--card);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-sm);
}
.btn-ghost:hover {
  border-color: var(--ink-2);
  transform: translateY(-1px);
}

.btn-outline-light {
  color: #fff;
  background: oklch(1 0 0 / 0.06);
  border-color: oklch(1 0 0 / 0.3);
}
.btn-outline-light:hover {
  background: oklch(1 0 0 / 0.14);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 44px;
  height: 44px;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: 12px;
  background: transparent;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.2s, border-color 0.2s;
}
.icon-btn:hover {
  background: var(--bg-soft);
  border-color: var(--line);
}

/* ------------------------------------------------------------------ nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  background: color-mix(in oklab, var(--bg) 78%, transparent);
  backdrop-filter: saturate(1.4) blur(16px);
  -webkit-backdrop-filter: saturate(1.4) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background-color 0.3s;
}
.nav[data-scrolled] {
  border-bottom-color: var(--line);
}
.nav-in {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 100%;
}
.logo {
  display: inline-flex;
  align-items: center;
  flex: none;
}
.logo img {
  width: 112px;
  height: auto;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-inline: auto;
}
.nav-links > a {
  padding: 10px 14px;
  border-radius: 10px;
  color: var(--ink-2);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s, background-color 0.2s;
}
.nav-links > a:hover {
  color: var(--ink);
  background: var(--bg-soft);
}
.nav-links-actions {
  display: none;
}
.nav-tools {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-login {
  display: none;
}
.nav-cta {
  min-height: 40px;
}
.menu-btn {
  display: none;
}
.ic-sun {
  display: none;
}
:root[data-theme='dark'] .ic-sun {
  display: block;
}
:root[data-theme='dark'] .ic-moon {
  display: none;
}
.ic-close {
  display: none;
}

@media (min-width: 1000px) {
  .nav-login {
    display: inline-flex;
    min-height: 40px;
  }
}

@media (max-width: 860px) {
  .nav-cta,
  .nav-login {
    display: none;
  }
  .menu-btn {
    display: inline-flex;
  }
  .nav-tools {
    margin-left: auto;
  }
  .nav-links {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin: 0;
    padding: 12px clamp(16px, 4vw, 32px) 20px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s, transform 0.25s var(--ease), visibility 0.2s;
  }
  .nav-links[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .nav-links > a {
    padding: 14px 12px;
    font-size: 1.05rem;
  }
  .nav-links-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding-top: 12px;
  }
  .menu-btn[aria-expanded='true'] .ic-open {
    display: none;
  }
  .menu-btn[aria-expanded='true'] .ic-close {
    display: block;
  }
}

/* ------------------------------------------------------------------ type */
h1,
h2,
h3 {
  letter-spacing: -0.035em;
  line-height: 1.08;
  font-weight: 650;
  text-wrap: balance;
}
h2 {
  font-size: clamp(1.9rem, 4.2vw, 3rem);
}
h3 {
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  line-height: 1.25;
}
.sub,
.lede {
  color: var(--ink-2);
  font-size: clamp(1.02rem, 1.5vw, 1.2rem);
  line-height: 1.6;
  text-wrap: pretty;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--red-text);
}
.eyebrow-gold {
  color: var(--gold);
}

.section {
  padding-block: clamp(72px, 10vw, 128px);
}
.section-head {
  max-width: 760px;
  margin: 0 auto clamp(40px, 6vw, 64px);
  text-align: center;
}
.section-head .sub {
  margin-top: 18px;
}
.section-head-left {
  margin-inline: 0;
  text-align: left;
}

/* ------------------------------------------------------------------ hero */
.hero {
  position: relative;
  padding-top: clamp(40px, 7vw, 88px);
  overflow: clip;
}
.hero-bg,
.ai-bg,
.cta-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.blob {
  position: absolute;
  display: block;
  border-radius: 50%;
  filter: blur(110px);
  animation: drift 26s ease-in-out infinite alternate;
}
.hero-bg .b1 {
  top: -180px;
  left: -140px;
  width: 520px;
  height: 520px;
  background: oklch(0.72 0.17 28);
  opacity: 0.2;
}
.hero-bg .b2 {
  top: 40px;
  right: -180px;
  width: 560px;
  height: 560px;
  background: oklch(0.84 0.15 80);
  opacity: 0.3;
  animation-duration: 32s;
  animation-delay: -9s;
}
.hero-bg .b3 {
  top: 380px;
  left: 38%;
  width: 380px;
  height: 380px;
  background: oklch(0.76 0.13 340);
  opacity: 0.12;
  animation-duration: 22s;
  animation-delay: -14s;
}
:root[data-theme='dark'] .hero-bg .b1 { opacity: 0.16; }
:root[data-theme='dark'] .hero-bg .b2 { opacity: 0.1; }
:root[data-theme='dark'] .hero-bg .b3 { opacity: 0.07; }

.grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(oklch(0.5 0.02 60 / 0.22) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(ellipse 70% 55% at 50% 30%, #000 8%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 55% at 50% 30%, #000 8%, transparent 75%);
}
.on-dark .grid {
  background-image: radial-gradient(oklch(1 0 0 / 0.14) 1px, transparent 1px);
}
:root[data-theme='dark'] .hero-bg .grid {
  background-image: radial-gradient(oklch(1 0 0 / 0.12) 1px, transparent 1px);
}

@keyframes drift {
  to {
    transform: translate3d(70px, 50px, 0) scale(1.08);
  }
}

.hero-in {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  max-width: 100%;
  padding: 5px 14px 5px 5px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--glass);
  backdrop-filter: blur(10px);
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s, transform 0.25s var(--ease);
}
.badge:hover {
  border-color: var(--red);
  transform: translateY(-1px);
}
.badge-tag {
  flex: none;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--red);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.badge > span:nth-child(2) {
  text-align: left;
  line-height: 1.3;
}

.hero h1 {
  margin-top: 28px;
  font-size: clamp(2.5rem, 7vw, 5.4rem);
  line-height: 1.02;
  letter-spacing: -0.045em;
  max-width: 16ch;
}
.h1a,
.h1b {
  display: block;
}
.swash {
  position: relative;
  display: inline-block;
  background: linear-gradient(100deg, var(--red) 10%, oklch(0.66 0.2 40) 55%, var(--gold) 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: sheen 8s ease-in-out infinite alternate;
  padding-bottom: 0.08em;
}
.swash::after {
  content: '';
  position: absolute;
  left: 2%;
  right: 2%;
  bottom: 0;
  height: 0.09em;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--gold), transparent);
  transform-origin: left;
  animation: draw 1.1s 0.5s var(--ease) both;
}
@keyframes sheen {
  to {
    background-position: 100% 0;
  }
}
@keyframes draw {
  from {
    transform: scaleX(0);
  }
}
.lede {
  max-width: 62ch;
  margin-top: 26px;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 36px;
}
.hero-note {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 22px;
  margin-top: 26px;
  color: var(--ink-2);
  font-size: 0.9rem;
}
.hero-note li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.hero-note .ic {
  color: var(--ok);
  width: 1em;
  height: 1em;
  stroke-width: 3;
}

/* Product mock-up */
.hero-visual-wrap {
  position: relative;
  padding-top: clamp(40px, 6vw, 72px);
  perspective: 1800px;
}
.hero-visual {
  position: relative;
  --p: 0;
  transform: rotateX(calc((1 - var(--p)) * 16deg)) translateY(calc((1 - var(--p)) * 18px)) scale(calc(0.93 + var(--p) * 0.07));
  transform-origin: 50% 0;
  will-change: transform;
}
.frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: clamp(10px, 1.6vw, 18px);
  background: var(--card);
  box-shadow: var(--shadow-lg);
}
.frame img {
  width: 100%;
  height: auto;
}
.frame-hero::after {
  content: '';
  position: absolute;
  inset: auto 0 0 0;
  height: 28%;
  background: linear-gradient(to bottom, transparent, var(--bg));
  pointer-events: none;
}
.shot-dark {
  display: none;
}
:root[data-theme='dark'] .shot-light {
  display: none;
}
:root[data-theme='dark'] .shot-dark {
  display: block;
}

.chip {
  position: absolute;
  z-index: 2;
  display: grid;
  place-items: center;
  width: clamp(36px, 5vw, 60px);
  aspect-ratio: 1;
  animation: float var(--dur, 7s) ease-in-out var(--delay, 0s) infinite alternate;
}
.chip-in {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  border-radius: 28%;
  background: var(--glass);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line-strong);
  box-shadow: 0 14px 30px -12px oklch(0.2 0.03 40 / 0.35);
  transform: rotate(var(--tilt, 0deg));
}
.chip .ic {
  width: 48%;
  height: 48%;
}
.chip-1 { top: -4%; left: -2%; --tilt: -8deg; --dur: 7.5s; }
.chip-2 { top: 12%; right: -3%; --tilt: 7deg; --dur: 6.5s; --delay: -2s; }
.chip-3 { top: 40%; left: -4%; --tilt: 5deg; --dur: 8s; --delay: -4s; }
.chip-4 { top: -6%; right: 22%; --tilt: -5deg; --dur: 6.8s; --delay: -1s; }
.chip-5 { bottom: 24%; right: -4%; --tilt: -6deg; --dur: 7.2s; --delay: -3s; }
.chip-6 { bottom: 16%; left: 3%; --tilt: 8deg; --dur: 8.4s; --delay: -5s; }
.chip-7 { top: -5%; left: 26%; --tilt: 4deg; --dur: 9s; --delay: -6s; }
.chip-8 { bottom: 8%; right: 14%; --tilt: -4deg; --dur: 7s; --delay: -2.5s; }

@keyframes float {
  from {
    transform: translateY(-8px);
  }
  to {
    transform: translateY(10px);
  }
}

.float-card {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px 12px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: var(--glass);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-lg);
  animation: float 6s ease-in-out infinite alternate;
}
.float-card strong,
.float-card small {
  display: block;
  line-height: 1.3;
}
.float-card strong {
  font-size: 0.92rem;
}
.float-card small {
  color: var(--ink-2);
  font-size: 0.8rem;
}
.fc-ic {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--red);
  color: #fff;
}
.fc-ic-gold {
  background: var(--gold);
  color: var(--gold-ink);
}
.fc-ai {
  left: 4%;
  bottom: 12%;
  animation-delay: -1.5s;
}
.fc-post {
  right: 4%;
  top: 30%;
  animation-delay: -4s;
}

@media (max-width: 900px) {
  .float-card {
    display: none;
  }
  .chip-3,
  .chip-5,
  .chip-6,
  .chip-8 {
    display: none;
  }
}

/* ------------------------------------------------------------------ logo marquee */
.logos {
  padding-block: clamp(28px, 4vw, 48px) clamp(40px, 5vw, 64px);
}
.logos-label {
  margin-bottom: 18px;
  text-align: center;
  color: var(--ink-2);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.logos-label-2 {
  margin-top: 26px;
}
.marquee {
  display: flex;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee-track {
  display: flex;
  flex: none;
  min-width: 100%;
  align-items: center;
  justify-content: space-around;
  gap: 48px;
  padding-right: 48px;
  animation: marquee 38s linear infinite;
}
.marquee.reverse .marquee-track {
  animation-direction: reverse;
  animation-duration: 44s;
}
.marquee:hover .marquee-track {
  animation-play-state: paused;
}
.marquee li {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink-2);
  white-space: nowrap;
}
.marquee li .ic {
  width: 26px;
  height: 26px;
}
@keyframes marquee {
  to {
    transform: translateX(-100%);
  }
}

/* ------------------------------------------------------------------ cards with a cursor spotlight */
[data-spot] {
  position: relative;
  --mx: 50%;
  --my: 0%;
}
[data-spot]::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(420px circle at var(--mx) var(--my), oklch(0.7 0.19 30 / 0.12), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
[data-spot]:hover::before {
  opacity: 1;
}

/* ------------------------------------------------------------------ pain */
.pain {
  padding-top: clamp(48px, 7vw, 88px);
}
.pain-ic {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 20px;
  border-radius: 14px;
  background: color-mix(in oklab, var(--red) 10%, var(--card));
  color: var(--red-text);
}
.pain-ic .ic {
  width: 22px;
  height: 22px;
}

/* ------------------------------------------------------------------ proof strip */
.proof {
  padding-top: clamp(8px, 2vw, 24px);
}
.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-block: 1px solid var(--line);
}
.proof-item {
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  gap: 8px;
  padding: clamp(24px, 3.6vw, 44px) 8px;
  text-align: center;
}
.proof-item + .proof-item {
  border-left: 1px solid var(--line);
}
.proof-item dd {
  font-size: clamp(2.1rem, 6vw, 4.4rem);
  font-weight: 650;
  line-height: 1;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}
.proof-item .plus {
  margin-left: 2px;
  color: var(--red-text);
  font-weight: 450;
}
.proof-item dt {
  color: var(--ink-2);
  font-size: clamp(0.8rem, 1.4vw, 0.98rem);
  font-weight: 550;
}

/* ------------------------------------------------------------------ eight tabs → one workspace */
.collapse {
  max-width: 920px;
  margin: 0 auto clamp(56px, 8vw, 96px);
}
.win {
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: var(--card);
  box-shadow: var(--shadow-lg);
}
.win-bar {
  display: flex;
  gap: 7px;
  padding: 12px 14px 0;
  background: var(--bg-soft);
}
.win-bar i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--line-strong);
}
.wtabs {
  display: grid;
  grid-template-columns: repeat(var(--n), minmax(0, 1fr)) minmax(0, 0fr);
  padding: 10px 12px 0;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
  transition: grid-template-columns 1s var(--ease);
}
.is-after .wtabs {
  grid-template-columns: repeat(var(--n), minmax(0, 0fr)) minmax(0, 1fr);
}
.wtab {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  margin-right: 4px;
  padding: 10px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 10px 10px 0 0;
  background: var(--card);
  color: var(--ink-2);
  font-size: 0.8rem;
  font-weight: 550;
  white-space: nowrap;
  transition: opacity 0.5s var(--ease) calc(var(--i, 0) * 40ms), margin 1s var(--ease), padding 1s var(--ease), border-width 1s;
}
.wtab > .ic {
  width: 16px;
  height: 16px;
}
.wtab > span {
  overflow: hidden;
  text-overflow: ellipsis;
}
.is-after .wtab:not(.wtab-main) {
  margin-right: 0;
  padding-inline: 0;
  border-width: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s var(--ease) calc(var(--i, 0) * 40ms), margin 1s var(--ease), padding 1s var(--ease), border-width 1s,
    visibility 0s linear 1.2s;
}
.wtab-main {
  margin-right: 0;
  padding-inline: 0;
  border-width: 0;
  opacity: 0;
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 700;
  box-shadow: inset 0 2px 0 var(--red);
}
.wtab-main img {
  flex: none;
  width: 18px;
  height: 18px;
}
.is-after .wtab-main {
  padding-inline: 14px;
  border-width: 1px;
  opacity: 1;
}
.wbody {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
  gap: clamp(18px, 3vw, 36px);
  align-items: center;
  min-height: 168px;
  padding: clamp(18px, 3vw, 30px);
}
.wleft {
  display: grid;
  gap: 22px;
}
.wchart {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 108px;
  padding: 14px 14px 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--bg-soft);
}
.wchart i {
  flex: 1;
  height: 12%;
  border-radius: 4px 4px 0 0;
  background: var(--line-strong);
  transition: height 1s var(--ease) calc(var(--k) * 60ms + 0.5s), background-color 0.6s 0.5s;
}
.is-after .wchart i {
  height: var(--h);
  background: linear-gradient(to top, var(--red), oklch(0.7 0.19 40));
}
.wpills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.wpills span {
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 99px;
  color: var(--ink-2);
  font-size: 0.85rem;
  font-weight: 600;
  transition: color 0.5s 0.6s, border-color 0.5s 0.6s, background-color 0.5s 0.6s;
}
.is-after .wpills span {
  border-color: color-mix(in oklab, var(--red) 35%, var(--line));
  background: color-mix(in oklab, var(--red) 7%, var(--card));
  color: var(--red-text);
}
.wchips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.wchip {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--bg-soft);
  filter: grayscale(1);
  opacity: 0.55;
  transform: translate(var(--tx, 0), var(--ty, 0)) rotate(var(--tr, 0deg));
  transition: transform 1s var(--ease), filter 0.6s, opacity 0.6s, background-color 0.6s, box-shadow 0.6s;
}
.wchip .ic {
  width: 22px;
  height: 22px;
}
.wchip:nth-child(1) { --tx: 14px; --ty: 10px; --tr: -9deg; }
.wchip:nth-child(2) { --tx: -8px; --ty: -12px; --tr: 7deg; }
.wchip:nth-child(3) { --tx: 20px; --ty: 6px; --tr: 12deg; }
.wchip:nth-child(4) { --tx: -14px; --ty: 14px; --tr: -6deg; }
.wchip:nth-child(5) { --tx: 6px; --ty: -10px; --tr: 10deg; }
.wchip:nth-child(6) { --tx: -18px; --ty: 8px; --tr: -12deg; }
.wchip:nth-child(7) { --tx: 10px; --ty: 14px; --tr: 6deg; }
.wchip:nth-child(8) { --tx: -6px; --ty: -8px; --tr: -8deg; }
.is-after .wchip {
  filter: none;
  opacity: 1;
  transform: none;
  background: var(--card);
  box-shadow: var(--shadow-sm);
}
.collapse-caption {
  position: relative;
  height: 1.7em;
  margin-top: 22px;
  text-align: center;
  font-weight: 600;
}
.cap {
  position: absolute;
  inset: 0;
  transition: opacity 0.5s, transform 0.6s var(--ease);
}
.cap-before {
  color: var(--ink-2);
}
.cap-after {
  color: var(--red-text);
  opacity: 0;
  transform: translateY(8px);
}
.is-after .cap-before {
  opacity: 0;
  transform: translateY(-8px);
}
.is-after .cap-after {
  opacity: 1;
  transform: none;
}

.pain-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(28px, 4.5vw, 64px);
}
.pcol {
  position: relative;
  padding-top: 24px;
  border-top: 1px solid var(--line-strong);
}
.pcol::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--red);
  transition: width 1s var(--ease) 0.3s;
}
.pcol.in::before {
  width: 56px;
}
html:not(.js) .pcol::before {
  width: 56px;
}
.pnum {
  display: block;
  margin-bottom: 16px;
  color: var(--red-text);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  font-variant-numeric: tabular-nums;
}
.pcol h3 {
  margin-bottom: 10px;
  font-size: 1.3rem;
}
.pcol p {
  max-width: 38ch;
  color: var(--ink-2);
}

/* ------------------------------------------------------------------ feature tabs */
.features {
  background: var(--bg-soft);
  border-block: 1px solid var(--line);
}
.tablist {
  display: flex;
  gap: 6px;
  margin-bottom: 28px;
  padding: 6px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--card);
  box-shadow: var(--shadow-sm);
  scrollbar-width: none;
  scroll-snap-type: x proximity;
}
.tablist::-webkit-scrollbar {
  display: none;
}
.tab {
  position: relative;
  display: inline-flex;
  flex: 1 0 auto;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  padding: 0 18px;
  border: 0;
  border-radius: 13px;
  background: transparent;
  color: var(--ink-2);
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  scroll-snap-align: center;
  overflow: hidden;
  transition: color 0.2s, background-color 0.2s;
}
.tab:hover {
  color: var(--ink);
  background: var(--bg-soft);
}
.tab[aria-selected='true'] {
  color: var(--ink);
  background: var(--bg-soft);
}
.tab[aria-selected='true'] .ic {
  color: var(--red-text);
}
.tab-bar {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 3px;
  border-radius: 3px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
}
.tab[aria-selected='true'] .tab-bar {
  transform: scaleX(1);
}
.tabs[data-auto] .tab[aria-selected='true'] .tab-bar {
  animation: progress var(--tab-ms, 7000ms) linear both;
}
.tabs[data-paused] .tab[aria-selected='true'] .tab-bar {
  animation-play-state: paused;
}
@keyframes progress {
  from {
    transform: scaleX(0);
  }
}

.panel {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.4fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
  animation: panel-in 0.55s var(--ease) both;
}
@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
}
.panel-copy h3 {
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  letter-spacing: -0.03em;
}
.panel-copy > p {
  margin-top: 14px;
  color: var(--ink-2);
  font-size: 1.05rem;
}
.ticks {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}
.ticks li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.ticks .ic {
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  padding: 4px;
  border-radius: 50%;
  background: color-mix(in oklab, var(--ok) 16%, var(--card));
  color: var(--ok);
  stroke-width: 3;
}
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 28px;
  color: var(--red-text);
  font-weight: 650;
  text-decoration: none;
}
.link-arrow .ic {
  transition: transform 0.25s var(--ease);
}
.link-arrow:hover .ic {
  transform: translateX(4px);
}

/* ------------------------------------------------------------------ Ask AI */
.ai {
  position: relative;
  padding-block: clamp(80px, 11vw, 140px);
  background: var(--bg);
  overflow: clip;
}
.ai-bg .b1 {
  top: -120px;
  left: -160px;
  width: 560px;
  height: 560px;
  background: oklch(0.6 0.23 29);
  opacity: 0.45;
}
.ai-bg .b2 {
  bottom: -200px;
  right: -120px;
  width: 560px;
  height: 560px;
  background: oklch(0.8 0.16 76);
  opacity: 0.22;
  animation-delay: -10s;
}
.ai-bg .grid {
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, #000 10%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, #000 10%, transparent 75%);
}
.ai-in {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
}
.ai-copy .sub {
  margin-top: 18px;
}
.ai-copy h2 {
  color: var(--ink);
}
.ai-steps {
  display: grid;
  gap: 18px;
  margin: 32px 0 36px;
}
.ai-steps li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.ai-steps .num {
  display: grid;
  place-items: center;
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-weight: 700;
  font-size: 0.9rem;
}
.ai-steps strong,
.ai-steps small {
  display: block;
}
.ai-steps small {
  margin-top: 2px;
  color: var(--ink-2);
  font-size: 0.95rem;
}

.ai-visual {
  position: relative;
  min-height: 520px;
}
.ai-panel-shot {
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  aspect-ratio: 0.62;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 40px 90px -30px oklch(0 0 0 / 0.8);
  transform: rotate(2.5deg);
}
.ai-panel-shot img {
  position: absolute;
  top: 0;
  right: 0;
  width: auto;
  height: 100%;
  max-width: none;
}
.ai-demo {
  position: absolute;
  left: 0;
  bottom: 0;
  overflow: hidden;
  width: min(350px, 66%);
  padding: 20px;
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  background: oklch(0.2 0.014 40 / 0.86);
  backdrop-filter: blur(18px);
  box-shadow: 0 30px 80px -20px oklch(0 0 0 / 0.8);
  transform: rotate(-1.5deg);
  animation: float 8s ease-in-out infinite alternate;
}
.ai-demo-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  color: var(--gold);
}
.ai-demo-label {
  padding: 3px 10px;
  border-radius: 99px;
  background: oklch(1 0 0 / 0.08);
  color: var(--ink-2);
  font-size: 0.75rem;
  font-weight: 600;
}
.ai-field > span:first-child {
  display: block;
  margin-bottom: 6px;
  color: var(--ink-2);
  font-size: 0.8rem;
  font-weight: 600;
}
.ai-input {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: oklch(0 0 0 / 0.25);
  font-size: 0.92rem;
  white-space: nowrap;
  overflow: hidden;
}
.ai-input .ic {
  color: var(--ink-2);
}
.caret {
  width: 2px;
  height: 1.1em;
  background: var(--gold);
  animation: blink 1s steps(1) infinite;
}
@keyframes blink {
  50% {
    opacity: 0;
  }
}
.ai-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 12px;
  min-height: 42px;
  border-radius: 12px;
  background: var(--red);
  color: #fff;
  font-weight: 650;
  font-size: 0.92rem;
  transition: transform 0.2s, filter 0.2s;
}
.ai-btn[data-busy] {
  transform: scale(0.97);
  filter: brightness(1.15);
}
.ai-skel {
  position: absolute;
  inset: auto 20px 20px 20px;
  display: grid;
  gap: 10px;
  pointer-events: none;
  transition: opacity 0.3s;
}
.ai-skel i {
  display: block;
  height: 12px;
  border-radius: 99px;
  background: linear-gradient(90deg, oklch(1 0 0 / 0.06), oklch(1 0 0 / 0.16), oklch(1 0 0 / 0.06));
  background-size: 200% 100%;
  animation: shimmer 1.6s linear infinite;
}
.ai-skel i:nth-child(1) { width: 38%; height: 16px; }
.ai-skel i:nth-child(2) { width: 92%; }
.ai-skel i:nth-child(3) { width: 74%; }
.ai-skel i:nth-child(4) { width: 84%; }
.ai-skel i:nth-child(5) { width: 46%; height: 16px; }
.ai-demo[data-done] .ai-skel,
html:not(.js) .ai-skel {
  opacity: 0;
}
@keyframes shimmer {
  to {
    background-position: -200% 0;
  }
}
.ai-result {
  display: grid;
  gap: 4px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.ai-result > * {
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.js .ai-demo:not([data-done]) .ai-result > * {
  opacity: 0;
  transform: translateY(8px);
}
.ai-result-title {
  color: var(--ink-2);
  font-size: 0.78rem;
  font-weight: 600;
}
.ai-product {
  font-size: 1.05rem;
  font-weight: 650;
}
.ai-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 6px 0 4px;
}
.ai-tags span {
  padding: 3px 10px;
  border-radius: 99px;
  background: oklch(1 0 0 / 0.09);
  font-size: 0.78rem;
}
.ai-result dl {
  display: grid;
  gap: 8px;
  margin-top: 6px;
}
.ai-result dt {
  color: var(--ink-2);
  font-size: 0.74rem;
}
.ai-result dd {
  font-size: 0.9rem;
  font-weight: 550;
}
.ai-chs {
  display: flex;
  gap: 8px;
}
.ai-chs .ic {
  width: 20px;
  height: 20px;
}
.ai-create {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  color: var(--gold);
  font-size: 0.9rem;
  font-weight: 650;
}
.js .ai-demo:not([data-done]) .ai-result > :nth-child(1) { transition-delay: 0ms; }
.ai-demo[data-done] .ai-result > :nth-child(2) { transition-delay: 100ms; }
.ai-demo[data-done] .ai-result > :nth-child(3) { transition-delay: 200ms; }
.ai-demo[data-done] .ai-result > :nth-child(4) { transition-delay: 320ms; }
.ai-demo[data-done] .ai-result > :nth-child(5) { transition-delay: 440ms; }

@media (max-width: 900px) {
  .ai-in {
    grid-template-columns: minmax(0, 1fr);
  }
  .ai-visual {
    min-height: 0;
    display: grid;
    gap: 20px;
  }
  .ai-panel-shot,
  .ai-demo {
    position: relative;
    width: 100%;
    transform: none;
    animation: none;
  }
  .ai-panel-shot {
    aspect-ratio: 1.1;
    max-width: 480px;
    margin-inline: auto;
  }
  .ai-demo {
    max-width: 480px;
    margin-inline: auto;
  }
}

/* ------------------------------------------------------------------ bento */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 20px;
}
.bento-card {
  display: flex;
  flex-direction: column;
  grid-column: span 5;
  min-height: 380px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--card);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), border-color 0.3s;
}
.bento-card.wide {
  grid-column: span 7;
}
.bento-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}
.bento-copy {
  position: relative;
  z-index: 1;
  padding: 28px 28px 8px;
}
.bento-copy p {
  margin-top: 8px;
  max-width: 46ch;
  color: var(--ink-2);
}
.bento-shot {
  position: relative;
  height: clamp(220px, 24vw, 310px);
  margin: 20px 0 0 28px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-right: 0;
  border-bottom: 0;
  border-top-left-radius: 14px;
  box-shadow: var(--shadow-lg);
  transition: transform 0.5s var(--ease);
}
.bento-shot img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 0 0;
  transform: scale(var(--zoom, 1));
  transform-origin: var(--origin, 0 0);
  transition: transform 0.7s var(--ease);
}
.bento-card:hover .bento-shot {
  transform: translate(-6px, -6px);
}
.bento-card:hover .bento-shot img {
  transform: scale(calc(var(--zoom, 1) * 1.04));
}
.bento-hooks { --zoom: 1.22; --origin: 100% 0; }
.bento-command { --zoom: 1.7; --origin: 52% 46%; }
.bento-modes { --zoom: 1.2; --origin: 100% 0; }
.bento-connect {
  background: linear-gradient(160deg, var(--card), color-mix(in oklab, var(--gold) 9%, var(--card)));
}
.connect-visual {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
  padding: 24px 28px 30px;
  margin-top: auto;
}
.tile {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: var(--card);
  box-shadow: var(--shadow-sm);
}
.tile .ic {
  width: 44%;
  height: 44%;
}
.tile i {
  position: absolute;
  top: -6px;
  right: -6px;
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--ok);
  color: #fff;
  transform: scale(0);
}
.tile i .ic {
  width: 12px;
  height: 12px;
  stroke-width: 3.5;
}
.in .tile i,
.bento-connect.in .tile i {
  animation: pop 0.5s var(--ease) calc(var(--k) * 90ms + 400ms) both;
}
@keyframes pop {
  from {
    transform: scale(0);
  }
  to {
    transform: scale(1);
  }
}
html:not(.js) .tile i {
  transform: scale(1);
}

/* ------------------------------------------------------------------ steps */
.steps {
  padding-top: 0;
}
.steps-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  counter-reset: s;
}
.steps-grid::before {
  content: '';
  position: absolute;
  top: 54px;
  left: 16%;
  right: 16%;
  border-top: 2px dashed var(--line-strong);
}
.step {
  position: relative;
  padding: 28px;
  text-align: center;
}
.step-ic {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: 20px;
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--line-strong);
  color: var(--red-text);
  box-shadow: var(--shadow-sm);
}
.step-ic .ic {
  width: 24px;
  height: 24px;
}
.step-num {
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(12px);
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  z-index: 1;
}
.step h3 {
  margin-bottom: 8px;
}
.step p {
  max-width: 32ch;
  margin-inline: auto;
  color: var(--ink-2);
}

/* ------------------------------------------------------------------ pricing */
.pricing {
  background: var(--bg-soft);
  border-block: 1px solid var(--line);
}
.toggle-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 44px;
  font-weight: 600;
}
.toggle-label {
  color: var(--ink-2);
  transition: color 0.2s;
}
.toggle-label[data-on] {
  color: var(--ink);
}
.switch {
  position: relative;
  width: 56px;
  height: 32px;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 99px;
  background: var(--card);
  box-shadow: var(--shadow-sm);
  transition: background-color 0.25s, border-color 0.25s;
}
.switch i {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--ink-2);
  transition: transform 0.3s var(--ease), background-color 0.25s;
}
.switch[aria-checked='true'] {
  background: var(--red);
  border-color: var(--red);
}
.switch[aria-checked='true'] i {
  transform: translateX(24px);
  background: #fff;
}
.save {
  padding: 4px 12px;
  border-radius: 99px;
  background: color-mix(in oklab, var(--gold) 28%, var(--card));
  color: var(--gold-ink);
  font-size: 0.8rem;
  font-weight: 700;
}
:root[data-theme='dark'] .save {
  color: var(--gold);
}

.plans {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  align-items: stretch;
}
.plan {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--card);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s;
}
.plan:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.plan.popular {
  border-color: transparent;
  background:
    linear-gradient(var(--card), var(--card)) padding-box,
    conic-gradient(from var(--angle), var(--red), var(--gold), oklch(0.76 0.13 340), var(--red)) border-box;
  border: 2px solid transparent;
  box-shadow: var(--shadow-lg);
  animation: spin 6s linear infinite;
}
@keyframes spin {
  to {
    --angle: 360deg;
  }
}
.plan-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 99px;
  background: var(--red);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  transform: translateX(-50%);
  white-space: nowrap;
}
.plan h3 {
  font-size: 1.4rem;
}
.plan-blurb {
  min-height: 3.2em;
  margin-top: 6px;
  color: var(--ink-2);
  font-size: 0.95rem;
}
.plan-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-top: 22px;
  font-variant-numeric: tabular-nums;
}
.plan-price .cur {
  font-size: 1.5rem;
  font-weight: 650;
}
.plan-price .amt {
  font-size: 3.4rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
}
.plan-price .per {
  color: var(--ink-2);
  font-weight: 500;
}
.plan-was {
  margin-top: 4px;
  color: var(--ink-2);
  font-size: 0.9rem;
}
.plan-bill {
  min-height: 1.6em;
  margin: 6px 0 22px;
  color: var(--ink-2);
  font-size: 0.9rem;
}
.plan-includes {
  margin: 28px 0 14px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--ink-2);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.plan-list {
  display: grid;
  gap: 11px;
}
.plan-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.95rem;
}
.plan-list .ic {
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 1px;
  padding: 3px;
  border-radius: 50%;
}
.plan-list .on .ic {
  background: color-mix(in oklab, var(--ok) 16%, var(--card));
  color: var(--ok);
  stroke-width: 3;
}
.plan-list .off {
  color: var(--ink-2);
}
.plan-list .off .ic {
  background: var(--bg-soft);
  color: var(--ink-2);
}
.pay-note {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 10px;
  max-width: 760px;
  margin: 36px auto 0;
  color: var(--ink-2);
  font-size: 0.95rem;
  text-align: left;
}
.pay-note .ic {
  margin-top: 3px;
  color: var(--red-text);
}

/* ------------------------------------------------------------------ FAQ */
.faq-in {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(28px, 6vw, 80px);
  align-items: start;
}
.faq-in .section-head {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  margin-bottom: 0;
}
.faq-list {
  border-top: 1px solid var(--line);
}
details {
  border-bottom: 1px solid var(--line);
}
summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 4px;
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  list-style: none;
  cursor: pointer;
  transition: color 0.2s;
}
summary::-webkit-details-marker {
  display: none;
}
summary:hover {
  color: var(--red-text);
}
summary .ic {
  width: 22px;
  height: 22px;
  color: var(--ink-2);
  transition: transform 0.35s var(--ease), color 0.2s;
}
details[open] summary .ic {
  transform: rotate(135deg);
  color: var(--red-text);
}
.faq-a {
  padding: 0 4px 24px;
  max-width: 62ch;
  color: var(--ink-2);
  animation: panel-in 0.4s var(--ease) both;
}

/* ------------------------------------------------------------------ contact */
.contact {
  padding-top: 0;
}
.contact-in {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: start;
}
.contact-copy .sub {
  margin-top: 18px;
}
.contact-h3 {
  margin: 36px 0 14px;
  font-size: 1rem;
}
.contact-list {
  display: grid;
  gap: 12px;
}
.contact-list li {
  display: flex;
  align-items: center;
  gap: 12px;
}
.contact-list .ic {
  color: var(--red-text);
}
.contact-list a {
  text-decoration: none;
  font-weight: 550;
}
.contact-list a:hover {
  text-decoration: underline;
}
.contact-form {
  display: grid;
  gap: 16px;
  padding: clamp(22px, 3vw, 36px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--card);
  box-shadow: var(--shadow-lg);
}
.row2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.field {
  display: grid;
  gap: 6px;
}
.field > span {
  font-size: 0.88rem;
  font-weight: 600;
}
.field abbr {
  color: var(--red-text);
  text-decoration: none;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: var(--bg);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea {
  resize: vertical;
  min-height: 110px;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--red);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--red) 18%, transparent);
}
.check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--ink-2);
  font-size: 0.9rem;
}
.check input {
  flex: none;
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  accent-color: var(--red);
}
.check a {
  color: var(--red-text);
  font-weight: 600;
}
.hp {
  position: absolute;
  left: -9999px;
}
.form-status {
  min-height: 1.4em;
  font-size: 0.95rem;
  font-weight: 550;
}
.form-status[data-state='ok'] {
  color: var(--ok);
}
.form-status[data-state='error'] {
  color: var(--red-text);
}

/* ------------------------------------------------------------------ closing CTA */
.cta-band {
  position: relative;
  margin-inline: clamp(12px, 2.5vw, 28px);
  padding-block: clamp(64px, 9vw, 112px);
  border-radius: clamp(22px, 3vw, 36px);
  background: oklch(0.18 0.03 30);
  overflow: hidden;
  text-align: center;
}
.cta-bg .b1 {
  top: -200px;
  left: 8%;
  width: 520px;
  height: 520px;
  background: oklch(0.58 0.24 29);
  opacity: 0.6;
}
.cta-bg .b2 {
  bottom: -240px;
  right: 6%;
  width: 520px;
  height: 520px;
  background: oklch(0.82 0.16 76);
  opacity: 0.3;
  animation-delay: -12s;
}
.cta-in {
  position: relative;
}
.cta-in h2 {
  max-width: 18ch;
  margin-inline: auto;
  font-size: clamp(2rem, 5vw, 3.6rem);
  color: #fff;
}
.cta-in p {
  max-width: 46ch;
  margin: 20px auto 0;
  color: oklch(0.88 0.01 80);
  font-size: 1.15rem;
}

/* ------------------------------------------------------------------ footer */
.footer {
  --mark-w: min(900px, 92vw);
  position: relative;
  margin-top: clamp(20px, 3vw, 36px);
  padding-top: clamp(40px, 5vw, 64px);
  overflow: hidden;
}
.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.7fr);
  gap: clamp(32px, 6vw, 88px);
}
.footer-brand p {
  max-width: 30ch;
  margin-top: 16px;
  color: var(--ink-2);
}
.footer-contact {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-contact .ic {
  color: var(--red-text);
}
.footer-contact a {
  font-weight: 550;
  text-decoration: none;
}
.footer-contact a:hover {
  text-decoration: underline;
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px 20px;
}
.footer-col h3 {
  margin-bottom: 18px;
  color: var(--ink-2);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.footer-col ul {
  display: grid;
  gap: 12px;
}
.footer-col a {
  padding-bottom: 2px;
  color: var(--ink);
  font-size: 0.95rem;
  text-decoration: none;
  background: linear-gradient(var(--red-text), var(--red-text)) 0 100% / 0 1px no-repeat;
  transition: background-size 0.3s var(--ease), color 0.2s;
}
.footer-col a:hover {
  color: var(--red-text);
  background-size: 100% 1px;
}
/* Oversized wordmark, faded out toward the bottom */
.footer-mark {
  display: flex;
  justify-content: center;
  height: calc(var(--mark-w) * 0.235);
  margin-top: clamp(32px, 5vw, 64px);
  overflow: hidden;
  pointer-events: none;
  user-select: none;
  mask-image: linear-gradient(to bottom, #000 40%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, #000 40%, transparent 100%);
}
.footer-mark img {
  align-self: flex-start;
  width: var(--mark-w);
  max-width: none;
  height: auto;
  opacity: 0.14;
}
:root[data-theme='dark'] .footer-mark img {
  opacity: 0.2;
}
.footer-bottom {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
  padding-block: 22px 30px;
  color: var(--ink-2);
  font-size: 0.9rem;
}
.footer-bottom::before {
  content: '';
  position: absolute;
  top: 0;
  left: clamp(16px, 4vw, 32px);
  right: clamp(16px, 4vw, 32px);
  border-top: 1px solid var(--line);
}
.footer-end {
  display: flex;
  align-items: center;
  gap: 20px;
}
.lang-switch {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--line-strong);
  border-radius: 99px;
  background: var(--card);
}
.lang-switch > * {
  min-width: 44px;
  padding: 6px 12px;
  border-radius: 99px;
  color: var(--ink-2);
  font-size: 0.82rem;
  font-weight: 650;
  text-align: center;
  text-decoration: none;
}
.lang-switch a:hover {
  color: var(--ink);
}
.lang-switch [aria-current] {
  background: var(--ink);
  color: var(--bg);
}
.to-top {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-2);
  text-decoration: none;
}
.to-top:hover {
  color: var(--ink);
}
.ic-up {
  transform: rotate(-90deg);
}

/* ------------------------------------------------------------------ mobile CTA bar */
.mobile-cta {
  position: fixed;
  inset: auto 0 0 0;
  z-index: 40;
  display: none;
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: blur(14px);
  border-top: 1px solid var(--line);
  transform: translateY(110%);
  visibility: hidden;
  transition: transform 0.35s var(--ease), visibility 0s linear 0.35s;
}
.mobile-cta[data-show] {
  transform: none;
  visibility: visible;
  transition-delay: 0s;
}

/* ------------------------------------------------------------------ reveal on scroll */
.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease) var(--d, 0ms), transform 0.8s var(--ease) var(--d, 0ms);
}
.js .reveal.in {
  opacity: 1;
  transform: none;
}

/* ------------------------------------------------------------------ 简体中文 */
:lang(zh-CN) body {
  line-height: 1.75;
  font-feature-settings: normal;
}
:lang(zh-CN) h1,
:lang(zh-CN) h2,
:lang(zh-CN) h3 {
  letter-spacing: -0.01em;
  line-height: 1.22;
  line-break: strict;
}
:lang(zh-CN) .hero h1 {
  max-width: 20ch;
  font-size: clamp(1.8rem, 6.2vw, 4rem);
  line-height: 1.16;
}
:lang(zh-CN) .eyebrow,
:lang(zh-CN) .plan-includes,
:lang(zh-CN) .footer-col h3 {
  letter-spacing: 0.02em;
  text-transform: none;
}
:lang(zh-CN) .lede,
:lang(zh-CN) .sub {
  line-height: 1.75;
}

/* ------------------------------------------------------------------ responsive */
@media (max-width: 1000px) {
  .panel {
    grid-template-columns: minmax(0, 1fr);
  }
  .plans {
    grid-template-columns: minmax(0, 1fr);
    max-width: 520px;
    margin-inline: auto;
  }
  .plan.popular {
    order: -1;
  }
  .bento-card,
  .bento-card.wide {
    grid-column: span 12;
  }
  .faq-in,
  .contact-in {
    grid-template-columns: minmax(0, 1fr);
  }
  .faq-in .section-head {
    position: static;
  }
  .footer-top {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 760px) {
  /* Product shots are desktop-sized: crop in so the interface stays readable on a phone */
  .panel .frame {
    aspect-ratio: 1.15;
  }
  .panel .frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.45);
    transform-origin: 82% 8%;
  }
  .pain-cols {
    grid-template-columns: minmax(0, 1fr);
  }
  .footer-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .wtab {
    padding: 9px 8px;
  }
  .wbody {
    grid-template-columns: minmax(0, 1fr);
  }
  .steps-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .steps-grid::before {
    display: none;
  }
  .row2 {
    grid-template-columns: minmax(0, 1fr);
  }
  .connect-visual {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .mobile-cta {
    display: block;
  }
  .footer {
    padding-bottom: 76px;
  }
  .badge {
    border-radius: 20px;
  }
  .hero-cta .btn {
    flex: 1 1 100%;
  }
}

/* ------------------------------------------------------------------ reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    animation-delay: 0s !important;
    transition-duration: 0.001ms !important;
    transition-delay: 0s !important;
  }
  .hero-visual {
    transform: none;
  }
  .marquee {
    overflow-x: auto;
  }
  .js .reveal {
    opacity: 1;
    transform: none;
  }
  .tile i {
    transform: scale(1);
  }
  .caret {
    display: none;
  }
}