:root {
  --yellow: #ffd91a;
  --yellow-deep: #e3b800;
  --black: #202020;
  --cream: #f7f6f1;
  --line: #d8d7d1;
  --green: #0d8564;
  --muted: #666;
  --soft: #87857e;
  /* iOS UIKit 常用弹簧 */
  --ease-ios: cubic-bezier(0.32, 0.72, 0, 1);
  --ease-out: cubic-bezier(0.25, 0.1, 0.25, 1);
  --dur-micro: 200ms;
}

* {
  box-sizing: border-box;
}

html {
  /* 不用 CSS smooth scroll，避免和手指惯性滚动打架 */
  scroll-behavior: auto;
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--black);
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "PingFang SC",
    "Microsoft YaHei",
    sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

button,
input,
textarea {
  font: inherit;
}

.site-header {
  height: 62px;
  padding: 0 16px 0 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid #eee;
}

.logo img {
  display: block;
  width: 118px;
  height: auto;
}

.header-call {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 6px 4px 6px 8px;
  border-radius: 999px;
  -webkit-tap-highlight-color: transparent;
}

.header-call__icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 14px;
  flex-shrink: 0;
}

.header-call__copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: left;
}

.header-call__copy strong {
  font-size: 13px;
  font-weight: 800;
  line-height: 1.15;
}

.header-call__copy span {
  font-size: 11px;
  color: var(--soft);
  line-height: 1.2;
}

.page-hero {
  padding: 48px 24px 44px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.crumb {
  margin: 0 0 24px;
  font-size: 12px;
  color: #888;
}

.eyebrow {
  margin: 0;
  font: 600 12px/1.2 Arial, sans-serif;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--soft);
}

.hero-lead,
.join-section h2 {
  margin: 16px 0 0;
  font-size: clamp(28px, 7.6vw, 42px);
  line-height: 1.28;
  letter-spacing: -0.04em;
  font-weight: 900;
  text-wrap: balance;
}

.hero-lead {
  max-width: 16em;
  background: linear-gradient(
    118deg,
    #1a1a1c 0%,
    #2a2a2e 28%,
    #8a6a00 52%,
    #e3b800 72%,
    #ffd91a 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.join-section h2 em {
  font-style: normal;
  color: var(--yellow-deep);
}

.hero-sub {
  margin: 18px 0 0;
  max-width: 36em;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.hero-proof {
  margin: 16px 0 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--black);
}

.step-rail {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.step-rail li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 14px;
  background: #fff;
  border: 1px solid var(--line);
}

.step-rail b {
  font: 800 15px/1 Arial, sans-serif;
  color: var(--yellow-deep);
}

.step-rail span {
  font-size: 15px;
  font-weight: 700;
}

.section-alt {
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.stats-grid article {
  background: #fff;
  padding: 20px 16px;
}

.stats-grid strong {
  display: block;
  font: 800 32px/1 Arial, sans-serif;
  color: var(--yellow-deep);
  letter-spacing: -0.04em;
}

.stats-grid span {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
}

.rights-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.rights-grid article {
  padding: 14px 16px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.45;
}

.rights-grid.compact article {
  font-size: 13px;
  font-weight: 600;
  color: var(--black);
}

.section-alt .rights-grid article {
  background: var(--cream);
}

.timeline.compact li {
  padding-bottom: 22px;
}

.timeline.compact h3 {
  margin: 8px 0 4px;
}

.timeline.compact p {
  font-size: 12px;
}

.intro-banner {
  padding: 42px 24px;
  background: var(--yellow);
}

.intro-banner p {
  margin: 0;
  max-width: 40em;
  font-size: clamp(18px, 5vw, 26px);
  font-weight: 800;
  line-height: 1.55;
  letter-spacing: -0.03em;
}

.content-section {
  padding: 52px 24px;
}

.process-section {
  background: #fff;
  border-top: 1px solid var(--line);
}

.title-row {
  margin-bottom: 32px;
}

.title-row h2 {
  margin: 0;
  font-size: clamp(26px, 7vw, 38px);
  letter-spacing: -0.06em;
  line-height: 1.2;
  font-weight: 900;
}

.title-row p {
  margin: 14px 0 0;
  max-width: 26em;
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted);
}

.partner-steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line);
}

.partner-steps article {
  padding: 22px 14px 18px 0;
}

.partner-steps article:nth-child(even) {
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.partner-steps article:nth-child(n + 3) {
  border-top: 1px solid var(--line);
}

.partner-steps article:nth-child(5) {
  grid-column: 1 / -1;
  border-left: 0;
  padding-left: 0;
}

.partner-steps span,
.timeline time {
  display: block;
  font: 700 13px/1 Arial, sans-serif;
  color: var(--yellow-deep);
}

.partner-steps h3,
.timeline h3 {
  margin: 16px 0 6px;
  font-size: 16px;
}

.partner-steps p,
.timeline p {
  margin: 0;
  font-size: 12px;
  line-height: 1.55;
  color: var(--muted);
}

.timeline {
  margin: 0;
  padding: 0 0 0 28px;
  border-left: 1px solid var(--line);
  list-style: none;
}

.timeline li {
  position: relative;
  padding: 0 0 32px;
}

.timeline li:last-child {
  padding-bottom: 0;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--yellow);
  border: 3px solid var(--black);
}

.timeline time {
  font-size: 20px;
}

.join-section {
  background: #242424;
  color: #fff;
  padding: 48px 24px 56px;
}

.join-section .eyebrow {
  color: #aaa;
}

.join-section h2 {
  color: #fff;
}

.join-desc {
  margin: 18px 0 0;
  max-width: 32em;
  font-size: 14px;
  line-height: 1.8;
  color: #aaa;
}

.partner-form {
  margin-top: 28px;
  display: grid;
  gap: 14px;
}

.partner-form label {
  display: grid;
  gap: 8px;
}

.partner-form label span {
  font-size: 13px;
  color: #cfcfcf;
}

.partner-form .req {
  color: var(--yellow);
  margin-left: 2px;
}

.partner-form input,
.partner-form textarea,
.partner-form select {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  border-radius: 0;
  padding: 14px 14px;
  outline: none;
  transition:
    border-color var(--dur-micro) var(--ease-out),
    background-color var(--dur-micro) var(--ease-out);
}

.partner-form select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, #aaa 50%),
    linear-gradient(135deg, #aaa 50%, transparent 50%);
  background-position:
    calc(100% - 18px) 50%,
    calc(100% - 12px) 50%;
  background-size:
    6px 6px,
    6px 6px;
  background-repeat: no-repeat;
  padding-right: 36px;
}

.partner-form select:disabled {
  opacity: 0.45;
}

.partner-form select option {
  color: #202020;
  background: #fff;
}

.partner-form input::placeholder,
.partner-form textarea::placeholder {
  color: rgba(255, 255, 255, 0.35);
}

.partner-form input:focus,
.partner-form textarea:focus,
.partner-form select:focus {
  border-color: var(--yellow);
  background-color: rgba(255, 255, 255, 0.09);
}

.partner-form textarea {
  resize: vertical;
  min-height: 110px;
}

.partner-form input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
}

.partner-form input[type="number"]::-webkit-outer-spin-button,
.partner-form input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.partner-form__site[hidden] {
  display: none !important;
}

.form-tip {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
}

.form-tip.is-error {
  color: #ffb4b4;
}

.form-tip.is-ok {
  color: #b8f5c9;
}

.primary-btn {
  margin-top: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  width: 100%;
  border: 0;
  background: var(--yellow);
  color: var(--black);
  padding: 15px 18px;
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
  transition: transform var(--dur-micro) var(--ease-ios);
}

.primary-btn b {
  font: 700 18px/1 Arial, sans-serif;
}

.primary-btn:active {
  transform: scale(0.985);
}

.primary-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.site-footer {
  background: var(--black);
  color: #fff;
  padding: 36px 24px 28px;
}

.site-footer strong {
  font-size: 20px;
}

.site-footer p {
  margin: 12px 0 0;
  color: #aaa;
  font-size: 13px;
  line-height: 1.8;
}

.site-footer small {
  display: block;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: #777;
  font: 11px Arial, sans-serif;
}

/*
 * 可见、可靠的入场：所有环境都走 .fx -> .fx-in
 * 只用 opacity + transform，iOS 弹簧曲线。
 */
.fx {
  opacity: 0;
  transform: translate3d(0, 28px, 0);
  transition:
    opacity 560ms var(--ease-ios) var(--fx-delay, 0ms),
    transform 560ms var(--ease-ios) var(--fx-delay, 0ms);
  will-change: opacity, transform;
}

.fx.fx-in {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.fx.fx-in.is-done {
  will-change: auto;
  transition: none;
}

body.is-mp-embed .site-header,
body.is-mp-embed .site-footer,
body.is-mp-embed .crumb {
  display: none;
}

body.is-mp-embed .page-hero {
  padding-top: 32px;
}

@media (prefers-reduced-motion: reduce) {
  .fx,
  .fx.fx-in {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

@media (min-width: 801px) {
  .site-header {
    height: 78px;
    padding: 0 clamp(24px, 4vw, 72px);
  }

  .logo img {
    width: 149px;
  }

  .header-call__copy strong {
    font-size: 15px;
  }

  .page-hero,
  .intro-banner,
  .content-section,
  .join-section,
  .site-footer {
    padding-left: clamp(24px, 10vw, 160px);
    padding-right: clamp(24px, 10vw, 160px);
  }

  .page-hero {
    padding-top: 96px;
    padding-bottom: 72px;
  }

  .hero-lead,
  .join-section h2 {
    font-size: clamp(48px, 5.5vw, 78px);
  }

  .hero-lead {
    max-width: 14em;
  }

  .intro-banner {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .intro-banner p {
    font-size: clamp(26px, 3vw, 40px);
  }

  .title-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 40px;
    margin-bottom: 48px;
  }

  .title-row p {
    margin: 0;
  }

  .hero-sub {
    font-size: 16px;
  }

  .rights-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .step-rail {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .partner-steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .partner-steps article,
  .partner-steps article:nth-child(even),
  .partner-steps article:nth-child(n + 3),
  .partner-steps article:nth-child(5) {
    border-top: 0;
    border-left: 0;
    padding: 28px 22px 20px 0;
    grid-column: auto;
  }

  .partner-steps article + article {
    padding-left: 22px;
    border-left: 1px solid var(--line);
  }

  .partner-steps article:nth-child(4),
  .partner-steps article:nth-child(5) {
    border-top: 1px solid var(--line);
    margin-top: 8px;
    padding-top: 28px;
  }

  .timeline {
    margin-left: 8%;
    padding-left: 48px;
  }

  .timeline li::before {
    left: -55px;
  }

  .partner-form {
    grid-template-columns: 1fr 1fr;
    gap: 16px 18px;
    max-width: 760px;
  }

  .partner-form__full,
  .form-tip,
  .primary-btn {
    grid-column: 1 / -1;
  }

  .primary-btn {
    width: auto;
    justify-self: start;
    min-width: 220px;
  }
}