/* ????????Soft UI + ??????????????*/

:root {
  --color-primary: #0d9488;
  --color-primary-deep: #0f766e;
  --color-primary-ink: #115e59;
  --color-primary-soft: #ccfbf1;
  --color-secondary: #14b8a6;
  --color-accent: #007aff;
  --color-accent-deep: #0051d5;
  --color-accent-soft: #e8f2ff;
  --color-background: #f3f6f9;
  --color-background-soft: #eaf6f3;
  --color-surface: #ffffff;
  --color-foreground: #0f172a;
  --color-heading: #0b3d3a;
  --color-muted: #3f5451;
  --color-muted-soft: #5a6f6b;
  --color-border: #7dd3c8;
  --color-border-subtle: #d7e3e0;
  --color-on-dark: #f8fffe;
  --color-on-dark-muted: #d7ebe7;
  --color-footer-bg: #0b3d3a;
  --color-beian-bg: #072f2d;

  --font-display: "Noto Serif SC", "Songti SC", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 5.5rem;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 10px 28px rgba(15, 51, 48, 0.07);
  --shadow-soft: 0 18px 48px rgba(15, 78, 74, 0.1);
  --shadow-lift: 0 16px 40px rgba(11, 61, 58, 0.12);

  --header-h: 68px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 220ms;
  --page-gutter: 1.25rem;
  --max: 1200px;
}

@media (min-width: 1280px) {
  :root {
    --page-gutter: 2rem;
    --max: 1360px;
  }
}

@media (min-width: 1600px) {
  :root {
    --page-gutter: 2.75rem;
    --max: 1520px;
  }
}

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

html {
  scroll-behavior: smooth;
  /* ???????16px ? 18px??? rem ???? */
  font-size: 18px;
}

@media (min-width: 1280px) {
  html {
    font-size: 18.5px;
  }
}

@media (min-width: 1600px) {
  html {
    font-size: 19px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-foreground);
  background: var(--color-background);
  -webkit-font-smoothing: antialiased;
}

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

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

ul,
ol {
  margin: 0;
  padding: 0;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--color-primary-ink);
  color: #fff;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.container {
  width: min(100% - (var(--page-gutter) * 2), var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border-subtle);
  box-shadow: 0 8px 24px rgba(15, 51, 48, 0.05);
  background: rgba(255, 255, 255, 0.96);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  height: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-heading);
}

.brand img {
  border-radius: 11px;
  box-shadow: 0 2px 8px rgba(13, 148, 136, 0.18);
}

.brand--nav span {
  font-size: 1.18rem;
}

.nav {
  display: none;
  align-items: center;
  gap: 0.15rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-muted);
}

.nav a {
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--color-primary-ink);
  background: rgba(13, 148, 136, 0.08);
}

@media (min-width: 960px) {
  .nav {
    display: flex;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: inherit;
  font-weight: 600;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease),
    border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), color var(--dur) var(--ease);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.btn:active {
  transform: scale(0.98);
}

.btn--sm {
  padding: 0.48rem 1rem;
  font-size: 0.875rem;
}

.btn--lg {
  padding: 0.92rem 1.55rem;
  font-size: 1rem;
  min-height: 50px;
}

.btn--primary {
  background: linear-gradient(165deg, #16857b 0%, var(--color-primary-ink) 100%);
  color: #fff;
  box-shadow: 0 8px 22px rgba(17, 94, 89, 0.28);
}

.btn--primary:hover {
  background: linear-gradient(165deg, #0f766e 0%, #0a4f4a 100%);
  box-shadow: var(--shadow-lift);
  transform: translateY(-1px);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-primary-ink);
  border-color: #b7ddd7;
}

.btn--ghost:hover {
  background: var(--color-primary-soft);
  border-color: var(--color-primary-deep);
  color: #064e3b;
}

/* Hero */
.hero {
  position: relative;
  display: flex;
  align-items: stretch;
  padding: var(--space-xl) 0 var(--space-2xl);
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 55% at 88% 8%, rgba(20, 184, 166, 0.16), transparent 55%),
    radial-gradient(ellipse 55% 45% at 6% 92%, rgba(0, 122, 255, 0.07), transparent 50%),
    linear-gradient(168deg, #ffffff 0%, #f4faf8 42%, #eef3f8 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(13, 148, 136, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 148, 136, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 20%, transparent 75%);
  pointer-events: none;
}

@media (min-width: 960px) {
  .hero {
    min-height: 0;
    padding: clamp(1.75rem, 3.5vh, 3rem) 0 clamp(2.25rem, 4.5vh, 3.5rem);
  }
}

.hero__atmosphere {
  position: absolute;
  inset: 0;
  pointer-events: none;
  color: rgba(15, 94, 89, 0.055);
}

.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(52px);
  animation: drift 16s var(--ease) infinite alternate;
}

.hero__glow--a {
  width: min(48vw, 400px);
  height: min(48vw, 400px);
  top: -8%;
  right: -2%;
  background: rgba(20, 184, 166, 0.22);
}

.hero__glow--b {
  width: min(34vw, 260px);
  height: min(34vw, 260px);
  bottom: 10%;
  left: -5%;
  background: rgba(0, 122, 255, 0.1);
  animation-delay: -5s;
}

.hero__wave {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  width: 100%;
  height: clamp(64px, 10vw, 120px);
}

.hero__layout {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.75rem);
  align-items: start;
  width: min(100% - (var(--page-gutter) * 2), var(--max));
  margin-inline: auto;
}

@media (min-width: 960px) {
  .hero__layout {
    grid-template-columns: minmax(0, 1.22fr) minmax(340px, 0.88fr);
  }
}

@media (min-width: 1280px) {
  .hero__layout {
    grid-template-columns: minmax(0, 1.28fr) minmax(400px, 0.82fr);
    gap: 3.25rem;
  }

  .hero__brand {
    font-size: clamp(3.4rem, 4.6vw, 4.9rem);
  }

  .hero__title {
    font-size: clamp(1.7rem, 2.1vw, 2.15rem);
  }

  .hero__lead {
    font-size: 1.12rem;
    max-width: 40rem;
  }
}

.hero__content {
  min-width: 0;
  padding-top: 0.25rem;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.85rem;
  padding: 0.35rem 0.75rem 0.35rem 0.55rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid #c5e5df;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-primary-ink);
}

.hero__eyebrow-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.18);
}

.hero__heading {
  margin: 0 0 0.85rem;
  font-weight: inherit;
  font-size: inherit;
}

.hero__brand {
  display: block;
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: clamp(2.7rem, 7vw, 4.35rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: 0.04em;
  color: var(--color-heading);
}

.hero__title {
  display: block;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.8vw, 1.9rem);
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-foreground);
}

.hero__lead {
  margin: 0 0 1.25rem;
  font-size: 1.03rem;
  color: var(--color-muted);
  max-width: 36rem;
  font-weight: 500;
  line-height: 1.75;
}

.hero__chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0 0 1.25rem;
}

.hero__chips li {
  padding: 0.38rem 0.78rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid #d5e8e4;
  color: var(--color-primary-ink);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0 0 1.35rem;
}

.hero__stat {
  padding: 0.85rem 0.8rem;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #ffffff 0%, #f7fbfa 100%);
  border: 1px solid #d8e8e4;
  box-shadow: var(--shadow-sm);
}

.hero__stat dt {
  margin: 0 0 0.25rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-muted-soft);
}

.hero__stat dd {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-heading);
}

@media (max-width: 420px) {
  .hero__stats {
    grid-template-columns: 1fr;
  }
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.hero__note {
  margin: 0;
  font-size: 0.84rem;
  color: var(--color-muted-soft);
  max-width: 34rem;
  line-height: 1.55;
}

/* Access panel */
.hero__access {
  scroll-margin-top: calc(var(--header-h) + 12px);
}

.access-panel {
  background: linear-gradient(165deg, #ffffff 0%, #f7fcfb 100%);
  border: 1px solid #c6ded9;
  border-radius: calc(var(--radius-lg) + 2px);
  box-shadow: var(--shadow-soft);
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.access-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

@media (min-width: 1280px) {
  .access-panel {
    padding: 1.45rem 1.4rem 1.5rem;
  }

  .platform-tabs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .qr-frame--hero {
    width: 188px;
    min-width: 188px;
  }
}

.access-panel__head {
  margin-bottom: 0.95rem;
}

.access-panel__title {
  margin: 0 0 0.3rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--color-heading);
}

.access-panel__desc {
  margin: 0;
  font-size: 0.88rem;
  color: var(--color-muted);
  font-weight: 500;
}

.platform-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.4rem;
  margin-bottom: 1.05rem;
  padding: 0.3rem;
  border-radius: var(--radius-md);
  background: #eef5f3;
}

.platform-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.2rem 0.3rem;
  min-height: 42px;
  padding: 0.4rem 0.4rem;
  border-radius: 12px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--color-muted);
  font-family: inherit;
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease),
    color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.platform-tab__icon {
  display: inline-flex;
  color: inherit;
}

.platform-tab__badge {
  font-size: 0.62rem;
  font-weight: 700;
  padding: 0.08rem 0.28rem;
  border-radius: 999px;
  background: #e2eaf0;
  color: #4a5d66;
}

.platform-tab:hover {
  color: var(--color-primary-ink);
  background: rgba(255, 255, 255, 0.65);
}

.platform-tab.is-active {
  background: #fff;
  border-color: #cfe3df;
  color: var(--color-primary-ink);
  box-shadow: var(--shadow-sm);
}

.platform-tab.is-active .platform-tab__badge {
  background: var(--color-primary-soft);
  color: var(--color-primary-ink);
}

.platform-tab:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

.platform-panel {
  display: none;
}

.platform-panel.is-active {
  display: grid;
  gap: 1.1rem;
}

.platform-panel--wechat.is-active {
  grid-template-columns: 1fr;
  align-items: center;
  justify-items: center;
  text-align: center;
  padding: 0.35rem 0.15rem 0.15rem;
  border-radius: var(--radius-md);
  background: #f4faf8;
  border: 1px solid #d5ebe6;
}

@media (min-width: 520px) {
  .platform-panel--wechat.is-active {
    grid-template-columns: auto 1fr;
    text-align: left;
    justify-items: start;
    padding: 1rem;
  }
}

.qr-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.qr-caption {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-primary-ink);
}

.qr-frame {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background: #f4f9fd;
  color: var(--color-muted);
  font-size: 0.9rem;
  font-weight: 600;
}

.qr-frame--hero {
  width: 168px;
  min-width: 168px;
  aspect-ratio: 1;
  margin: 0;
  border: 1px solid #c4dae8;
  background:
    linear-gradient(#fff, #fff) padding-box,
    linear-gradient(145deg, #9ad5cd, #7eb8d9) border-box;
  border: 1.5px solid transparent;
  gap: 0.35rem;
  position: relative;
  padding: 0.7rem;
  box-shadow: inset 0 0 0 6px #fff, var(--shadow-sm);
}

.qr-frame--hero img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 8px;
}

.qr-frame__placeholder {
  position: absolute;
  left: 50%;
  bottom: 0.55rem;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 0.66rem;
  font-weight: 700;
  color: var(--color-muted);
  background: rgba(255, 255, 255, 0.94);
  padding: 0.15rem 0.4rem;
  border-radius: 6px;
}

.qr-frame--ready {
  padding: 0.55rem;
  background: #fff;
}

.qr-frame--ready img {
  border-radius: 10px;
  object-fit: cover;
}

.platform-panel__meta {
  min-width: 0;
}

.platform-panel__meta strong {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 1rem;
  color: var(--color-heading);
}

.platform-panel__meta p {
  margin: 0 0 0.7rem;
  font-size: 0.88rem;
  color: var(--color-muted);
  font-weight: 500;
  line-height: 1.6;
}

.platform-panel__tips {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.platform-panel--wechat .platform-panel__tips {
  align-items: center;
}

@media (min-width: 520px) {
  .platform-panel--wechat .platform-panel__tips {
    align-items: flex-start;
  }
}

.platform-panel__tips li {
  position: relative;
  padding-left: 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary-ink);
}

.platform-panel__tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--color-primary);
}

.platform-soon {
  grid-column: 1 / -1;
  padding: 1.3rem 1.1rem;
  border-radius: var(--radius-md);
  background: #f4f7fb;
  border: 1px dashed #b7c9c4;
  text-align: left;
}

.platform-soon strong {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--color-heading);
  font-size: 1rem;
}

.platform-soon p {
  margin: 0 0 0.9rem;
  color: var(--color-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

@media (max-width: 959px) {
  .hero {
    min-height: auto;
    padding-top: var(--space-xl);
  }
}

@keyframes drift {
  from {
    transform: translate(0, 0);
  }
  to {
    transform: translate(-16px, 12px);
  }
}

/* Sections */
.section {
  padding: clamp(3rem, 6vw, 4.75rem) 0;
  background: var(--color-surface);
}

.section--muted {
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(13, 148, 136, 0.06), transparent 60%),
    linear-gradient(180deg, #eef2f7 0%, #e8f5f3 100%);
}

.section--soft {
  background:
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(0, 122, 255, 0.04), transparent 50%),
    var(--color-background-soft);
}

.section__kicker {
  margin: 0 0 0.55rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.section__kicker--on-light {
  color: var(--color-primary-ink);
}

.section__header {
  max-width: 40rem;
  margin-bottom: clamp(1.75rem, 3vw, 2.5rem);
}

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

@media (min-width: 1280px) {
  .section__header {
    max-width: 46rem;
  }
}

.section__title {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 2.8vw, 2.2rem);
  font-weight: 700;
  line-height: 1.28;
  color: var(--color-heading);
}

.section__lead {
  margin: 0;
  color: var(--color-muted);
  font-size: 1.08rem;
  font-weight: 500;
  line-height: 1.75;
}

/* Promise */
.promise-wrap {
  display: flex;
  flex-direction: column;
}

.promise-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .promise-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.15rem;
  }
}

.promise-item {
  position: relative;
  padding: 1.4rem 1.25rem 1.35rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.promise-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.promise-item__index {
  display: block;
  margin-bottom: 0.65rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-primary);
}

.promise-item strong {
  display: block;
  margin-bottom: 0.45rem;
  font-family: var(--font-display);
  font-size: 1.12rem;
  color: var(--color-heading);
}

.promise-item p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.94rem;
  line-height: 1.65;
}

/* Features */
.feature-list {
  list-style: none;
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .feature-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .feature-list {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.1rem;
  }
}

.feature {
  padding: 1.35rem 1.2rem 1.4rem;
  border-radius: var(--radius-lg);
  background: #f8fbfa;
  border: 1px solid var(--color-border-subtle);
  transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease),
    border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.feature:hover {
  box-shadow: var(--shadow-md);
  border-color: #b7ddd7;
  transform: translateY(-3px);
  background: #fff;
}

.feature__icon {
  display: inline-flex;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: linear-gradient(160deg, #e0f7f3, #d1f0ea);
  color: var(--color-primary-ink);
  margin-bottom: 0.9rem;
}

.feature__icon--accent {
  background: linear-gradient(160deg, #eaf3ff, #dce9ff);
  color: var(--color-accent-deep);
}

.feature__icon svg {
  width: 22px;
  height: 22px;
}

.feature h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--color-foreground);
}

.feature p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* Flow */
.flow-list {
  list-style: none;
  display: grid;
  gap: 1rem;
  position: relative;
}

@media (min-width: 768px) {
  .flow-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }

  .flow-list::before {
    content: "";
    position: absolute;
    top: 2.15rem;
    left: 12%;
    right: 12%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #9ad5cd 15%, #9ad5cd 85%, transparent);
    z-index: 0;
  }
}

.flow-step {
  position: relative;
  z-index: 1;
  padding: 1.5rem 1.3rem 1.45rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.flow-step__num {
  display: inline-flex;
  width: 2.35rem;
  height: 2.35rem;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.95rem;
  border-radius: 999px;
  background: linear-gradient(165deg, #16857b, var(--color-primary-ink));
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: 0 8px 18px rgba(17, 94, 89, 0.25);
}

.flow-step h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.18rem;
  color: var(--color-heading);
}

.flow-step p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.93rem;
  line-height: 1.65;
}

/* Audience */
.split {
  display: grid;
  gap: 1.15rem;
}

@media (min-width: 768px) {
  .split {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }
}

.split__panel {
  padding: 2rem 1.6rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-md);
  color: var(--color-foreground);
  transition: transform var(--dur) var(--ease);
}

.split__panel:hover {
  transform: translateY(-2px);
}

.split__panel--accent {
  background:
    radial-gradient(ellipse 80% 60% at 100% 0%, rgba(0, 122, 255, 0.22), transparent 55%),
    linear-gradient(155deg, #115e59 0%, #0f766e 48%, #0e6490 100%);
  border: none;
  color: var(--color-on-dark);
}

.split__label {
  margin: 0 0 0.45rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary-ink);
}

.split__panel--accent .split__label {
  color: #99f6e4;
}

.split__panel h3 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--color-heading);
  line-height: 1.35;
}

.split__panel--accent h3 {
  color: #fff;
}

.split__panel > p:not(.split__label) {
  margin: 0 0 1.25rem;
  color: var(--color-muted);
  font-weight: 500;
  line-height: 1.7;
}

.split__panel--accent > p:not(.split__label) {
  color: var(--color-on-dark-muted);
}

.split__panel ul {
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.split__panel li {
  position: relative;
  padding: 0.55rem 0.7rem 0.55rem 1.35rem;
  border-radius: 12px;
  background: #f5f9f8;
  color: var(--color-muted);
  font-size: 0.93rem;
  font-weight: 500;
}

.split__panel--accent li {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-on-dark-muted);
}

.split__panel li::before {
  content: "";
  position: absolute;
  left: 0.55rem;
  top: 50%;
  transform: translateY(-50%);
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--color-primary-ink);
}

.split__panel--accent li::before {
  background: #5eead4;
}

/* Scenes */
.scene-list {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .scene-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.15rem;
  }
}

.scene {
  padding: 1.45rem 1.3rem 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.scene:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.scene__tag {
  display: inline-flex;
  margin-bottom: 0.7rem;
  padding: 0.22rem 0.55rem;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary-ink);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.scene h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.12rem;
  color: var(--color-heading);
}

.scene p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.93rem;
  line-height: 1.65;
}

/* FAQ */
.faq-layout {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 960px) {
  .faq-layout {
    grid-template-columns: minmax(220px, 0.8fr) minmax(0, 1.4fr);
    gap: 3rem;
    align-items: start;
  }

  .faq-layout .section__header {
    margin-bottom: 0;
    position: sticky;
    top: calc(var(--header-h) + 1.25rem);
  }
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  max-width: none;
}

.faq-item {
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background: #fbfcfe;
  padding: 0.2rem 1.15rem;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.faq-item[open] {
  border-color: #b7ddd7;
  box-shadow: var(--shadow-sm);
  background: #fff;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 0.95rem 0;
  font-weight: 600;
  color: var(--color-foreground);
  font-family: var(--font-display);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  float: right;
  color: var(--color-primary-ink);
  font-weight: 700;
  font-size: 1.1rem;
}

.faq-item[open] summary::after {
  content: "??;
}

.faq-item p {
  margin: 0 0 1rem;
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

/* CTA */
.cta {
  background:
    radial-gradient(ellipse 70% 55% at 100% 0%, rgba(0, 122, 255, 0.08), transparent 55%),
    linear-gradient(180deg, #ffffff 0%, #eaf4ff 100%);
}

.cta__inner {
  display: grid;
  gap: 1.75rem;
  align-items: center;
  padding: clamp(1.6rem, 3vw, 2.75rem);
  border-radius: calc(var(--radius-lg) + 4px);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(244, 250, 248, 0.96));
  border: 1px solid #c9dbe8;
  box-shadow: var(--shadow-soft);
}

@media (min-width: 900px) {
  .cta__inner {
    grid-template-columns: 1.15fr 0.95fr;
    gap: 2.5rem;
  }
}

.cta__platforms {
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.cta__platform {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.85rem 1rem;
  border-radius: 14px;
  background: #fff;
  border: 1px solid #d7e3ec;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-heading);
}

.cta__platform span:last-child {
  margin-left: auto;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-muted-soft);
}

.cta__platform--live {
  border-color: #9ad5cd;
  background: linear-gradient(90deg, #f2fbf9, #fff);
}

.cta__platform--live span:last-child {
  color: var(--color-primary-ink);
}

.cta__dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: #94a3b8;
  flex-shrink: 0;
}

.cta__dot--live {
  background: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.2);
}

/* Footer + Beian */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-on-dark-muted);
  font-size: 0.9rem;
}

.footer-main {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-xl);
  padding: 2.25rem 0;
}

.footer-desc {
  margin: 0.55rem 0 0;
  max-width: 24rem;
  color: var(--color-on-dark-muted);
  line-height: 1.6;
}

.brand--footer {
  color: var(--color-on-dark);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.25rem;
  font-weight: 500;
}

.footer-links a {
  color: var(--color-on-dark);
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  transition: background var(--dur) var(--ease);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  background: rgba(255, 255, 255, 0.1);
}

.beian-bar {
  background: var(--color-beian-bg);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1rem 0 1.35rem;
}

.beian-inner {
  text-align: center;
}

.beian-line {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.35rem 0.5rem;
  color: #c5e0db;
  font-size: 0.82rem;
  line-height: 1.6;
}

.beian-sep {
  opacity: 0.55;
}

.beian-link {
  color: #e8faf6;
  font-weight: 500;
  border-bottom: 1px solid rgba(232, 250, 246, 0.35);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.beian-link:hover,
.beian-link:focus-visible {
  color: #fff;
  border-bottom-color: #fff;
}

.beian-note {
  margin: 0.45rem 0 0;
  font-size: 0.75rem;
  color: #8fb5af;
}

/* Reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}

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

.hero__content > [data-reveal]:nth-child(1) {
  transition-delay: 0.04s;
}
.hero__content > [data-reveal]:nth-child(2) {
  transition-delay: 0.1s;
}
.hero__content > [data-reveal]:nth-child(3) {
  transition-delay: 0.16s;
}
.hero__content > [data-reveal]:nth-child(4) {
  transition-delay: 0.22s;
}
.hero__content > [data-reveal]:nth-child(5) {
  transition-delay: 0.28s;
}
.hero__content > [data-reveal]:nth-child(6) {
  transition-delay: 0.34s;
}
.hero__content > [data-reveal]:nth-child(7) {
  transition-delay: 0.4s;
}
.hero__access[data-reveal] {
  transition-delay: 0.18s;
}