:root {
  --color-ink: #15171c;
  --color-muted: #666f7d;
  --color-line: #d9dee7;
  --color-paper: #f6f7f4;
  --color-panel: #ffffff;
  --color-charcoal: #111317;
  --color-gold: #b86e31;
  --color-gold-dark: #87501f;
  --color-green: #0f8f6b;
  --color-coral: #cb5a4d;
  --shadow-soft: 0 18px 50px rgba(17, 19, 23, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-ink);
  background: var(--color-paper);
  font-family:
    "Microsoft YaHei",
    "PingFang SC",
    "Segoe UI",
    Arial,
    sans-serif;
}

button,
a {
  font: inherit;
}

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

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

.page-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.top-recharge-button {
  position: fixed;
  z-index: 40;
  top: 18px;
  left: 18px;
  min-width: 82px;
  min-height: 42px;
  border: 0;
  border-radius: 8px;
  color: #ffffff;
  background: linear-gradient(180deg, var(--color-gold), var(--color-gold-dark));
  box-shadow: 0 14px 32px rgba(135, 80, 31, 0.34);
  cursor: pointer;
}

.top-recharge-button:hover,
.top-recharge-button:focus-visible {
  outline: 3px solid rgba(184, 110, 49, 0.24);
}

.hero {
  position: relative;
  min-height: 720px;
  overflow: hidden;
  color: #ffffff;
  background: #0f1115;
}

.hero__visual {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(8, 9, 12, 0.9), rgba(8, 9, 12, 0.62) 45%, rgba(8, 9, 12, 0.22)),
    linear-gradient(180deg, rgba(8, 9, 12, 0.3), rgba(8, 9, 12, 0.84));
}

.hero__inner {
  position: relative;
  z-index: 1;
  min-height: 720px;
  display: flex;
  flex-direction: column;
}

.site-nav {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-left: 92px;
}

.site-nav__brand {
  font-weight: 800;
  font-size: 18px;
}

.site-nav__links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
}

.site-nav__links a:hover,
.site-nav__links a:focus-visible {
  color: #ffffff;
}

.hero__content {
  width: min(720px, 100%);
  margin: auto 0;
  padding: 84px 0 124px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--color-gold);
  font-size: 13px;
  font-weight: 800;
}

.hero h1 {
  margin: 0;
  font-size: 88px;
  line-height: 0.96;
}

.hero__summary {
  margin: 26px 0 0;
  width: min(660px, 100%);
  color: rgba(255, 255, 255, 0.78);
  font-size: 18px;
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.primary-link,
.secondary-link {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: 8px;
  cursor: pointer;
}

.primary-link {
  color: #ffffff;
  background: var(--color-green);
}

.secondary-link {
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.08);
}

.hero__metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  width: min(620px, 100%);
  margin: 52px 0 0;
}

.hero__metrics div {
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.hero__metrics dt {
  color: #ffffff;
  font-size: 24px;
  font-weight: 800;
}

.hero__metrics dd {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, 0.66);
  font-size: 13px;
}

.section {
  padding: 90px 0;
}

.section--light {
  background: var(--color-paper);
}

.section--dark {
  color: #ffffff;
  background: var(--color-charcoal);
}

.section-header {
  width: min(760px, 100%);
  margin-bottom: 34px;
}

.section-header h2 {
  margin: 0;
  font-size: 44px;
  line-height: 1.15;
}

.section-header p:last-child {
  margin: 16px 0 0;
  color: var(--color-muted);
  font-size: 16px;
  line-height: 1.8;
}

.section-header--inverse p:last-child {
  color: rgba(255, 255, 255, 0.68);
}

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

.feature-card {
  min-height: 230px;
  padding: 26px;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-panel);
  box-shadow: 0 14px 32px rgba(17, 19, 23, 0.06);
}

.feature-card__index {
  color: var(--color-coral);
  font-size: 13px;
  font-weight: 800;
}

.feature-card h3 {
  margin: 22px 0 12px;
  font-size: 22px;
}

.feature-card p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.8;
}

.screenshot-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.55fr);
  gap: 24px;
  align-items: stretch;
}

.product-shot,
.visual-shot {
  margin: 0;
}

.product-shot {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: #20242b;
  box-shadow: var(--shadow-soft);
}

.window-bar {
  height: 42px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  background: #2a2f38;
}

.window-bar span {
  width: 11px;
  height: 11px;
  border-radius: 999px;
  background: #d46257;
}

.window-bar span:nth-child(2) {
  background: #e0a946;
}

.window-bar span:nth-child(3) {
  background: #4fb276;
}

.workspace-preview {
  min-height: 520px;
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  color: #1f2630;
  background: #edf0f3;
}

.workspace-preview__sidebar {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 18px;
  color: rgba(255, 255, 255, 0.72);
  background: #161b22;
}

.workspace-preview__sidebar strong {
  margin-bottom: 14px;
  color: #ffffff;
}

.sidebar-item {
  display: block;
  padding: 10px 12px;
  border-radius: 8px;
}

.sidebar-item--active {
  color: #ffffff;
  background: var(--color-green);
}

.workspace-preview__main {
  padding: 26px;
}

.workspace-preview__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.workspace-preview__top h3 {
  margin: 10px 0 0;
  font-size: 24px;
}

.workspace-preview__top button {
  min-width: 96px;
  min-height: 38px;
  border: 0;
  border-radius: 8px;
  color: #ffffff;
  background: var(--color-green);
}

.status-chip {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  color: #ffffff;
  background: var(--color-coral);
  font-size: 12px;
  font-weight: 700;
}

.progress-row {
  height: 10px;
  margin: 26px 0;
  overflow: hidden;
  border-radius: 999px;
  background: #d6dce5;
}

.progress-row span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-green), var(--color-gold));
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.preview-grid section {
  min-height: 230px;
  padding: 20px;
  border: 1px solid #dde3eb;
  border-radius: 8px;
  background: #ffffff;
}

.preview-grid h4 {
  margin: 0 0 12px;
  font-size: 17px;
}

.preview-grid p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.7;
}

figcaption {
  padding: 14px 18px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
}

.visual-shot {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: #20242b;
}

.visual-shot img {
  width: 100%;
  height: 100%;
  min-height: 520px;
  object-fit: cover;
}

.workflow-band {
  display: grid;
  grid-template-columns: minmax(260px, 0.6fr) minmax(0, 1.4fr);
  gap: 42px;
  align-items: start;
}

.workflow-band h2 {
  margin: 0;
  font-size: 42px;
  line-height: 1.18;
}

.workflow-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.workflow-list li {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  padding: 18px 20px;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: #ffffff;
}

.workflow-list strong {
  color: var(--color-ink);
}

.workflow-list span {
  color: var(--color-muted);
  line-height: 1.6;
}

.recharge-modal[hidden] {
  display: none;
}

.recharge-modal {
  position: fixed;
  z-index: 60;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
}

.is-modal-open {
  overflow: hidden;
}

.recharge-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 12, 16, 0.68);
}

.recharge-modal__panel {
  position: relative;
  width: min(640px, 100%);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 34px 80px rgba(0, 0, 0, 0.32);
}

.recharge-modal__panel:focus {
  outline: none;
}

.recharge-modal__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 26px 18px;
  border-bottom: 1px solid var(--color-line);
}

.recharge-modal__header h2 {
  margin: 0;
  font-size: 26px;
}

.icon-button {
  width: 38px;
  height: 38px;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  color: var(--color-ink);
  background: #ffffff;
  cursor: pointer;
}

.recharge-modal__body {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 26px;
  padding: 26px;
}

.wechat-qr {
  position: relative;
  aspect-ratio: 1;
  border: 10px solid #ffffff;
  border-radius: 8px;
  background-color: #ffffff;
  background-image:
    linear-gradient(90deg, #101318 12px, transparent 12px),
    linear-gradient(#101318 12px, transparent 12px),
    linear-gradient(90deg, transparent 18px, #101318 18px, #101318 30px, transparent 30px),
    linear-gradient(transparent 22px, #101318 22px, #101318 34px, transparent 34px);
  background-size:
    48px 48px,
    48px 48px,
    70px 70px,
    72px 72px;
  box-shadow: inset 0 0 0 1px #d7dde5;
}

.wechat-qr span {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 62px;
  height: 62px;
  border-radius: 8px;
  color: #ffffff;
  background: #12b76a;
  font-weight: 800;
}

.recharge-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.recharge-info__title {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 800;
}

.amount-options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.amount-options__button {
  min-height: 44px;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  color: var(--color-ink);
  background: #ffffff;
  cursor: pointer;
}

.amount-options__button.is-active {
  color: #ffffff;
  border-color: var(--color-green);
  background: var(--color-green);
}

.recharge-status {
  min-height: 25px;
  margin: 14px 0 18px;
  color: var(--color-muted);
}

.copy-button {
  min-height: 42px;
  border: 0;
  border-radius: 8px;
  color: #ffffff;
  background: var(--color-gold);
  cursor: pointer;
}

@media (max-width: 900px) {
  .hero,
  .hero__inner {
    min-height: 680px;
  }

  .site-nav {
    align-items: flex-end;
    padding-left: 82px;
  }

  .site-nav__links {
    display: none;
  }

  .feature-grid,
  .screenshot-layout,
  .workflow-band,
  .recharge-modal__body {
    grid-template-columns: 1fr;
  }

  .workspace-preview {
    grid-template-columns: 1fr;
  }

  .workspace-preview__sidebar {
    min-height: auto;
  }

  .preview-grid {
    grid-template-columns: 1fr;
  }

  .visual-shot img {
    min-height: 360px;
  }

  .wechat-qr {
    width: min(220px, 100%);
    margin: 0 auto;
  }
}

@media (max-width: 620px) {
  .page-shell {
    width: min(100% - 28px, 1180px);
  }

  .top-recharge-button {
    top: 12px;
    left: 12px;
    min-width: 72px;
    min-height: 38px;
  }

  .hero,
  .hero__inner {
    min-height: 650px;
  }

  .site-nav {
    min-height: 72px;
    padding-left: 76px;
  }

  .hero__content {
    padding: 70px 0 92px;
  }

  .hero h1 {
    font-size: 46px;
  }

  .hero__summary {
    font-size: 16px;
  }

  .hero__metrics,
  .workflow-list li,
  .amount-options {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 66px 0;
  }

  .section-header h2,
  .workflow-band h2 {
    font-size: 32px;
  }

  .workspace-preview__main {
    padding: 20px;
  }
}

@media (min-width: 621px) and (max-width: 900px) {
  .hero h1 {
    font-size: 64px;
  }

  .section-header h2,
  .workflow-band h2 {
    font-size: 36px;
  }
}