:root {
  --ink: #13171c;
  --muted: #5f6875;
  --soft: #f5f7fb;
  --paper: #ffffff;
  --line: #dce4ef;
  --blue: #1467e8;
  --blue-2: #0f4eb2;
  --green: #17a460;
  --gold: #c18b33;
  --dark: #0f1720;
  --shadow: 0 18px 46px rgba(15, 35, 70, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--soft);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

h1,
h2,
h3,
p {
  margin-top: 0;
}

.page-shell {
  width: min(100% - 32px, 1120px);
  margin: 0 auto;
}

.section-pad {
  padding: 62px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(220, 228, 239, 0.9);
  background: rgba(248, 250, 253, 0.9);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-logo {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
}

.brand-logo path {
  fill: none;
  stroke: var(--blue);
  stroke-width: 3.4;
  stroke-linecap: round;
}

.brand span {
  display: grid;
  line-height: 1.05;
}

.brand strong {
  font-size: 14px;
  font-weight: 900;
  white-space: nowrap;
}

.brand em {
  margin-top: 3px;
  color: var(--muted);
  font-size: 10px;
  font-style: normal;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.header-cta,
.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 8px;
  background: var(--blue);
  color: white;
  font-size: 14px;
  font-weight: 900;
  box-shadow: 0 12px 28px rgba(20, 103, 232, 0.23);
}

.header-cta {
  padding: 0 14px;
  white-space: nowrap;
}

.hero {
  padding: 40px 0 28px;
  background:
    radial-gradient(circle at 80% 8%, rgba(20, 103, 232, 0.08), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, #f6f8fb 100%);
}

.hero-grid {
  display: grid;
  gap: 28px;
}

.hero h1 {
  margin-bottom: 16px;
  font-size: 39px;
  line-height: 1.04;
  font-weight: 950;
  letter-spacing: 0;
}

.h1-ai {
  color: var(--blue);
}

.h1-system {
  color: var(--green);
}

.hero-lead {
  margin-bottom: 22px;
  color: var(--muted);
  font-size: 16px;
}

.hero-actions {
  display: grid;
  gap: 10px;
}

.primary-button {
  padding: 0 22px;
}

.secondary-link {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  color: var(--blue-2);
  font-size: 14px;
  font-weight: 900;
}

.hero-proof {
  display: grid;
  gap: 14px;
}

.money-card {
  padding: 18px;
  border: 1px solid rgba(20, 103, 232, 0.18);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.money-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 6px;
}

.money-card-top em {
  color: var(--muted);
  font-size: 13px;
  font-style: normal;
  font-weight: 900;
  text-align: right;
}

.money-card span,
.section-label {
  display: block;
  margin-bottom: 8px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

.money-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 24px;
  line-height: 1.22;
}

.money-card b {
  color: var(--green);
  font-size: 34px;
}

.money-card p {
  color: var(--muted);
}

.money-card p {
  margin-bottom: 14px;
}

.revenue-box {
  padding: 14px;
  border: 1px solid rgba(23, 164, 96, 0.22);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(23, 164, 96, 0.08), rgba(20, 103, 232, 0.06));
}

.revenue-box small {
  display: block;
  color: #526071;
  font-size: 12px;
  font-weight: 800;
}

.revenue-box div {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px;
  margin: 2px 0 4px;
  color: var(--green);
  font-size: 38px;
  font-weight: 950;
  line-height: 1.12;
}

.revenue-box span,
.revenue-box i {
  color: var(--green);
  font-style: normal;
}

.revenue-box b {
  color: var(--green);
  font-size: inherit;
}

.trust-bar {
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.trust-track {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.trust-track span {
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  background: var(--paper);
  color: #2f3742;
  font-size: 13px;
  font-weight: 900;
  text-align: center;
}

.trust-track span:last-child {
  grid-column: 1 / -1;
}

.section-head,
.section-copy {
  max-width: 740px;
}

h2 {
  margin-bottom: 14px;
  font-size: 28px;
  line-height: 1.22;
  font-weight: 950;
  letter-spacing: 0;
}

.section-head p:not(.section-label),
.section-copy p {
  color: var(--muted);
}

.case-layout {
  display: grid;
  gap: 28px;
}

.case-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.case-facts span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(20, 103, 232, 0.16);
  border-radius: 8px;
  background: rgba(20, 103, 232, 0.06);
  color: var(--blue-2);
  font-size: 13px;
  font-weight: 900;
}

.case-loop {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.case-loop p {
  margin: 18px 0 0;
  color: var(--muted);
}

.loop-orbit {
  position: relative;
  min-height: 330px;
  border-radius: 8px;
  background:
    radial-gradient(circle at center, rgba(20, 103, 232, 0.1) 0 24%, transparent 25%),
    radial-gradient(circle at center, transparent 0 46%, rgba(20, 103, 232, 0.16) 47%, transparent 48%);
}

.loop-orbit::before {
  content: "";
  position: absolute;
  inset: 54px;
  border: 1px dashed rgba(20, 103, 232, 0.32);
  border-radius: 50%;
  animation: orbitPulse 4s ease-in-out infinite;
}

@keyframes orbitPulse {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.035); opacity: 1; }
}

.orbit-core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 118px;
  height: 118px;
  display: grid;
  place-content: center;
  gap: 5px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--dark);
  color: white;
  text-align: center;
  box-shadow: 0 18px 40px rgba(15, 23, 32, 0.18);
}

.orbit-core strong {
  font-size: 20px;
  line-height: 1.1;
}

.orbit-core span {
  color: #b9c6d5;
  font-size: 12px;
  font-weight: 950;
}

.orbit-item {
  position: absolute;
  width: 116px;
  min-height: 76px;
  display: grid;
  align-content: center;
  gap: 4px;
  padding: 10px;
  border: 1px solid rgba(20, 103, 232, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 28px rgba(15, 35, 70, 0.08);
  text-align: center;
}

.logo-row {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 4px;
  margin-bottom: 2px;
}

.logo-row i {
  min-width: 24px;
  height: 24px;
  display: inline-grid;
  place-items: center;
  padding: 0 5px;
  border-radius: 999px;
  color: white;
  font-size: 10px;
  font-style: normal;
  font-weight: 950;
  line-height: 1;
  letter-spacing: 0;
  box-shadow: 0 6px 14px rgba(15, 35, 70, 0.14);
}

.platform-icon {
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  padding: 5px;
  border-radius: 50%;
  box-shadow: 0 6px 14px rgba(15, 35, 70, 0.14);
}

.platform-icon * {
  vector-effect: non-scaling-stroke;
}

.icon-instagram {
  background: linear-gradient(135deg, #ffb000, #f43f5e 48%, #7c3aed);
}

.icon-instagram rect,
.icon-instagram circle {
  fill: none;
  stroke: #fff;
  stroke-width: 2.1;
}

.icon-meta {
  background: #0866ff;
}

.icon-meta path,
.icon-tiktok path {
  fill: #fff;
}

.icon-tiktok {
  background: #101318;
}

.logo-ig {
  background: linear-gradient(135deg, #ffb000, #f43f5e 48%, #7c3aed);
}

.logo-meta {
  background: #0866ff;
  font-size: 15px !important;
}

.logo-tt {
  background: #101318;
  font-size: 14px !important;
}

.logo-web {
  min-width: 34px !important;
  background: #2563eb;
}

.logo-ga {
  background: #f59e0b;
}

.logo-ads {
  min-width: 34px !important;
  background: #1d4ed8;
}

.logo-wa {
  background: #22c55e;
}

.logo-ai {
  min-width: 34px !important;
  height: 28px !important;
  background: linear-gradient(135deg, #1467e8, #17a460);
}

.orbit-item b {
  color: var(--ink);
  font-size: 14px;
  line-height: 1.25;
}

.orbit-item span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.orbit-1 {
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
}

.orbit-2 {
  top: 50%;
  right: 0;
  transform: translateY(-50%);
}

.orbit-3 {
  bottom: 6px;
  left: 50%;
  transform: translateX(-50%);
}

.orbit-4 {
  top: 50%;
  left: 0;
  transform: translateY(-50%);
}

.value-section,
.proof-section {
  background: #f1f4f8;
}

.value-grid {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.value-grid article,
.package-grid article {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.value-grid span {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  margin-bottom: 14px;
  border-radius: 8px;
  background: rgba(20, 103, 232, 0.08);
  color: var(--blue);
  font-size: 13px;
  font-weight: 950;
}

.value-grid strong,
.package-grid strong {
  display: block;
  margin-bottom: 6px;
  font-size: 18px;
  line-height: 1.3;
}

.value-grid p,
.package-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.loop-section {
  background: var(--dark);
  color: white;
}

.loop-section .section-label {
  color: #7db2ff;
}

.loop-panel {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.loop-step {
  position: relative;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.loop-step span {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  margin-bottom: 12px;
  border-radius: 50%;
  background: rgba(125, 178, 255, 0.14);
  color: #7db2ff;
  font-weight: 950;
}

.loop-step strong {
  display: block;
  margin-bottom: 4px;
  font-size: 18px;
}

.loop-step p,
.loop-note {
  margin: 0;
  color: #c6d0db;
}

.loop-note {
  margin-top: 18px;
  padding: 16px;
  border: 1px solid rgba(125, 178, 255, 0.22);
  border-radius: 8px;
  background: rgba(125, 178, 255, 0.08);
}

.proof-grid {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}

.proof-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 10px 28px rgba(15, 35, 70, 0.05);
}

.proof-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  object-position: top center;
  border-bottom: 1px solid var(--line);
}

.proof-card-wide img {
  height: 188px;
}

.proof-card div {
  padding: 14px;
}

.proof-card h3 {
  margin-bottom: 4px;
  font-size: 17px;
  line-height: 1.35;
}

.proof-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

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

.website-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.site-thumb {
  height: 148px;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.site-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(2.2px);
}

.site-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transform: scale(1.02);
}

.package-section {
  background: #f7f9fc;
}

.package-grid {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.cta-section {
  background: linear-gradient(180deg, #ffffff, #f5f7fb);
}

.cta-grid {
  display: grid;
  gap: 24px;
}

.cta-copy p {
  color: var(--muted);
}

.cta-points {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.cta-points li {
  padding: 12px 14px;
  border: 1px solid rgba(20, 103, 232, 0.16);
  border-radius: 8px;
  background: rgba(20, 103, 232, 0.07);
  color: var(--blue-2);
  font-size: 14px;
  font-weight: 900;
}

.qr-card {
  display: grid;
  justify-items: center;
  gap: 8px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
  text-align: center;
}

.qr-card img {
  width: 190px;
  height: 190px;
  object-fit: contain;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.qr-card strong {
  margin-top: 8px;
  font-size: 20px;
}

.qr-card p {
  margin: 0;
  color: var(--muted);
}

@media (min-width: 720px) {
  .site-header {
    padding: 14px 40px;
  }

  .brand-logo {
    width: 40px;
    height: 40px;
    flex-basis: 40px;
  }

  .brand strong {
    font-size: 17px;
  }

  .header-cta {
    padding: 0 22px;
  }

  .page-shell {
    width: min(100% - 64px, 1120px);
  }

  .section-pad {
    padding: 84px 0;
  }

  .hero {
    min-height: 620px;
    display: flex;
    align-items: center;
    padding: 72px 0;
  }

  .hero-grid {
    grid-template-columns: 1fr 0.82fr;
    align-items: center;
    gap: 52px;
  }

  .hero h1 {
    max-width: 720px;
    font-size: 64px;
  }

  .hero-lead {
    max-width: 650px;
    font-size: 18px;
  }

  .hero-actions {
    display: flex;
    align-items: center;
  }

  .primary-button {
    padding: 0 26px;
  }

  .trust-track {
    grid-template-columns: repeat(5, 1fr);
  }

  .trust-track span {
    min-height: 72px;
  }

  .trust-track span:last-child {
    grid-column: auto;
  }

  .case-layout,
  .cta-grid {
    grid-template-columns: 0.95fr 1.05fr;
    align-items: center;
  }

  h2 {
    font-size: 42px;
  }

  .value-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .loop-orbit {
    min-height: 390px;
  }

  .orbit-item {
    width: 132px;
  }

  .loop-panel {
    grid-template-columns: repeat(5, 1fr);
  }

  .loop-step {
    min-height: 198px;
  }

  .proof-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .proof-card-wide {
    grid-column: span 2;
  }

  .proof-card img {
    height: 260px;
  }

  .proof-card-wide img {
    height: 246px;
  }

  .website-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .site-thumb {
    height: 170px;
  }

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

  .cta-points {
    grid-template-columns: repeat(3, max-content);
  }

  .qr-card {
    justify-self: end;
    width: min(100%, 340px);
  }
}

@media (min-width: 1040px) {
  .hero h1 {
    font-size: 72px;
  }
}