:root {
  --ink: #172033;
  --muted: #637083;
  --line: #e6ebf2;
  --paper: #ffffff;
  --soft: #f6f8fb;
  --red: #ef3f55;
  --red-dark: #cc293f;
  --teal: #119f94;
  --blue: #2d66d7;
  --green: #239b5a;
  --amber: #f5a623;
  --shadow: 0 18px 44px rgba(23, 32, 51, 0.12);
  --radius: 8px;
  --page: min(1160px, calc(100% - 48px));
  --page-narrow: min(760px, calc(100% - 32px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: var(--soft);
  line-height: 1.6;
  letter-spacing: 0;
}

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

button {
  font: inherit;
}

.site {
  min-height: 100vh;
  background:
    linear-gradient(115deg, rgba(239, 63, 85, 0.08), transparent 42%),
    linear-gradient(245deg, rgba(17, 159, 148, 0.09), transparent 38%),
    linear-gradient(180deg, #fff 0%, #f6f8fb 48%, #fff 100%);
  overflow: hidden;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid rgba(230, 235, 242, 0.86);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px);
}

.nav-inner {
  width: var(--page);
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  font-size: 1.18rem;
  font-weight: 900;
  white-space: nowrap;
}
.brand > span:last-child {
  color: #ef3f55 !important;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  color: #fff;
  background: var(--red); /* 纯色 #ef3f55 */
  box-shadow: 0 10px 24px rgba(239, 63, 85, 0.24);
  font-weight: 900;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 0.92rem;
  white-space: nowrap;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 9px 14px;
  border-radius: var(--radius);
  color: #fff;
  background: var(--red);
  font-weight: 800;
  box-shadow: 0 10px 24px rgba(239, 63, 85, 0.22);
}

.icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

.hero {
  width: var(--page);
  margin: 0 auto;
  padding: 72px 0 56px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  align-items: center;
  gap: 48px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 18px 0 0;
  padding: 8px 12px;
  border: 1px solid rgba(239, 63, 85, 0.18);
  border-radius: var(--radius);
  color: var(--red-dark);
  background: rgba(239, 63, 85, 0.08);
  font-size: 0.9rem;
  font-weight: 800;
}

.signal {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 5px rgba(17, 159, 148, 0.12);
}

h1 {
  margin: 0;
  font-size: 4.1rem;
  line-height: 1.05;
  letter-spacing: 0;
  word-break: keep-all;
  overflow-wrap: normal;
  -webkit-hyphens: none;
  hyphens: none;
}

.hero-lead {
  max-width: 650px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 1.15rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.deal-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.deal-pill {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  border: 1px solid rgba(239, 63, 85, 0.18);
  border-radius: var(--radius);
  color: #29344a;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 10px 24px rgba(23, 32, 51, 0.07);
  font-size: 0.9rem;
  font-weight: 850;
}

.deal-pill b {
  color: var(--red);
  font-size: 1.05rem;
}

.invite-card {
  width: min(650px, 100%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 24px;
  padding: 14px;
  border: 1px solid rgba(239, 63, 85, 0.24);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 16px 34px rgba(239, 63, 85, 0.14);
}

.invite-main {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-width: 0;
}

.invite-label {
  color: var(--muted);
  font-size: 0.96rem;
  font-weight: 900;
  white-space: nowrap;
}

.invite-code {
  color: var(--red-dark);
  font-size: 2rem;
  line-height: 1;
  font-weight: 900;
  letter-spacing: 0;
}

.invite-copy {
  min-height: 42px;
  padding: 9px 13px;
  border: 0;
  border-radius: var(--radius);
  color: #fff;
  background: var(--red);
  cursor: pointer;
  font-weight: 900;
  white-space: nowrap;
}

.btn {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 18px;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 900;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: var(--red);
  box-shadow: 0 14px 30px rgba(239, 63, 85, 0.26);
}

.btn-primary:hover {
  background: var(--red-dark);
}

.btn-secondary {
  color: var(--ink);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 12px 28px rgba(23, 32, 51, 0.08);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 650px;
  margin-top: 34px;
}

.stat {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
}

.stat:first-child {
  color: #fff;
  border-color: rgba(239, 63, 85, 0.22);
  background: linear-gradient(135deg, var(--red), var(--amber));
  box-shadow: 0 14px 30px rgba(239, 63, 85, 0.2);
}

.stat:first-child span {
  color: rgba(255, 255, 255, 0.88);
}

.stat strong {
  display: block;
  font-size: 1.35rem;
  line-height: 1.15;
}

.stat span {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.86rem;
}

.showcase {
  position: relative;
  min-width: 0;
}

.phone {
  width: min(390px, 100%);
  margin: 0 auto;
  padding: 12px;
  border-radius: 28px;
  background: #172033;
  box-shadow: 0 28px 70px rgba(23, 32, 51, 0.28);
}

.phone-screen {
  overflow: hidden;
  min-height: 590px;
  border-radius: 18px;
  background: #fff;
}

.app-head {
  padding: 18px;
  color: #fff;
  background: linear-gradient(135deg, #ef3f55, #f5a623);
}

.app-head-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  font-weight: 800;
}

.app-chip {
  padding: 5px 9px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.2);
}

.main-ticket {
  margin-top: 18px;
  padding: 18px;
  border-radius: var(--radius);
  color: var(--ink);
  background: #fff;
  box-shadow: 0 14px 28px rgba(122, 37, 25, 0.16);
}

.ticket-price {
  display: flex;
  align-items: flex-end;
  gap: 7px;
  color: var(--red);
  font-weight: 900;
}

.ticket-price small {
  padding-bottom: 9px;
  font-size: 1.15rem;
}

.ticket-price b {
  font-size: 3.35rem;
  line-height: 0.96;
}

.ticket-price span {
  padding-bottom: 9px;
  color: var(--muted);
  font-size: 0.92rem;
}

.main-ticket p {
  margin: 10px 0 0;
  font-weight: 850;
}

.app-services {
  display: grid;
  gap: 10px;
  padding: 16px;
}

.service-line {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.service-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  color: #fff;
  background: var(--teal);
  font-weight: 900;
}

.service-line:nth-child(2) .service-icon {
  background: var(--blue);
}

.service-line:nth-child(3) .service-icon {
  color: var(--ink);
  background: var(--amber);
}

.service-text {
  min-width: 0;
}

.service-text strong,
.service-text span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.service-text strong {
  font-size: 0.92rem;
}

.service-text span {
  color: var(--muted);
  font-size: 0.78rem;
}

.service-tag {
  color: var(--red);
  font-weight: 900;
  white-space: nowrap;
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 0 16px 18px;
}

.quick-item {
  min-height: 72px;
  display: grid;
  place-items: center;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: #3a4558;
  background: var(--soft);
  text-align: center;
  font-size: 0.78rem;
  font-weight: 800;
}

.section {
  width: var(--page);
  margin: 0 auto;
  padding: 62px 0;
}

.section-title {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 26px;
}

.section-title h2 {
  margin: 0;
  font-size: 2.15rem;
  line-height: 1.18;
}

.section-title p {
  max-width: 480px;
  margin: 0;
  color: var(--muted);
}

.express-band {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 20px;
  align-items: stretch;
}

.express-price {
  padding: 28px;
  border-radius: var(--radius);
  color: #fff;
  background: linear-gradient(135deg, #172033, #2d66d7);
  box-shadow: var(--shadow);
}

.express-price p {
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
}

.express-price strong {
  display: block;
  margin: 14px 0 8px;
  font-size: 4rem;
  line-height: 1;
}

.express-price span {
  color: rgba(255, 255, 255, 0.84);
  font-weight: 800;
}

.carrier-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.carrier {
  min-height: 150px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 12px 28px rgba(23, 32, 51, 0.06);
}

.carrier strong {
  display: block;
  font-size: 1.35rem;
}

.carrier span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
}

.carrier b {
  display: block;
  margin-top: 12px;
  color: var(--red);
  font-size: 1.6rem;
  line-height: 1;
}

.carrier-wide {
  min-height: 118px;
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
}

.carrier-wide span {
  max-width: 420px;
}

.features {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.feature {
  min-width: 0;
  position: relative;
  overflow: hidden;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 12px 28px rgba(23, 32, 51, 0.05);
}

.feature::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, var(--red), var(--amber));
}

.feature-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  color: #fff;
  background: var(--red);
  font-weight: 900;
}

.feature:nth-child(2n) .feature-icon {
  background: var(--teal);
}

.feature:nth-child(3n) .feature-icon {
  background: var(--blue);
}

.feature h3 {
  margin: 16px 0 8px;
  font-size: 1.08rem;
  line-height: 1.3;
}

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

.feature p b {
  color: var(--red-dark);
}

.highlight {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.highlight-card {
  min-height: 178px;
  padding: 24px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 12px 28px rgba(23, 32, 51, 0.05);
}

.highlight-card strong {
  display: block;
  color: var(--red);
  font-size: 2rem;
  line-height: 1.1;
}

.highlight-card h3 {
  margin: 14px 0 8px;
  font-size: 1.16rem;
}

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

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.step {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.step-no {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  color: #fff;
  background: var(--ink);
  font-weight: 900;
}

.step h3 {
  margin: 18px 0 8px;
  font-size: 1.18rem;
}

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

.cta {
  width: var(--page);
  margin: 16px auto 58px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  padding: 32px;
  border-radius: var(--radius);
  color: #fff;
  background: linear-gradient(135deg, #172033, #119f94);
  box-shadow: var(--shadow);
}

.cta h2 {
  margin: 0;
  font-size: 2rem;
  line-height: 1.2;
}

.cta p {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.78);
}

.link-panel {
  width: var(--page);
  margin: 0 auto 48px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.link-panel h2 {
  margin: 0 0 8px;
  font-size: 1.28rem;
}

.link-panel p {
  margin: 0 0 14px;
  color: var(--muted);
}

.link-box {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--soft);
}

.link-box code {
  display: block;
  min-width: 0;
  overflow: hidden;
  color: #374258;
  font-size: 0.84rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.copy-btn {
  min-height: 40px;
  padding: 9px 12px;
  border: 0;
  border-radius: var(--radius);
  color: #fff;
  background: var(--teal);
  cursor: pointer;
  font-weight: 900;
  white-space: nowrap;
}

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

.footer-inner {
  width: var(--page);
  margin: 0 auto;
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  text-align: center;
  font-size: 0.84rem;
}

.icp-link:hover {
  color: var(--ink);
  text-decoration: underline;
}

@media (max-width: 980px) {
  .nav-inner,
  .hero,
  .section,
  .cta,
  .link-panel,
  .footer-inner {
    width: var(--page-narrow);
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 48px;
  }

  h1 {
    font-size: 3.2rem;
  }

  .showcase {
    max-width: 460px;
    margin: 0 auto;
    width: 100%;
  }

  .section-title {
    display: block;
  }

  .section-title p {
    margin-top: 10px;
  }

  .express-band,
  .cta {
    grid-template-columns: 1fr;
  }

  .features {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .nav-inner {
    min-height: 62px;
  }

  .brand {
    font-size: 1.05rem;
  }

  .nav-links a:not(.nav-cta) {
    display: none;
  }

  .nav-cta {
    min-height: 38px;
    padding: 8px 11px;
    font-size: 0.85rem;
  }

  .hero {
    padding: 36px 0 34px;
    gap: 28px;
  }

  h1 {
    font-size: 2.45rem;
  }

  .hero-lead {
    font-size: 1rem;
  }

  .hero-actions,
  .btn {
    width: 100%;
  }

  .deal-pill {
    width: 100%;
  }

  .invite-card {
    width: 100%;
    align-items: stretch;
    flex-direction: column;
  }

  .invite-main {
    justify-content: space-between;
  }

  .invite-copy {
    width: 100%;
  }

  .hero-stats,
  .carrier-grid,
  .features,
  .highlight,
  .steps {
    grid-template-columns: 1fr;
  }

  .phone {
    border-radius: 22px;
  }

  .phone-screen {
    min-height: auto;
  }

  .service-line {
    grid-template-columns: 44px minmax(0, 1fr);
  }

  .service-icon {
    width: 44px;
    height: 44px;
  }

  .service-tag {
    grid-column: 2;
  }

  .quick-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section {
    padding: 42px 0;
  }

  .section-title h2 {
    font-size: 1.72rem;
  }

  .express-price,
  .cta {
    padding: 24px;
  }

  .express-price strong {
    font-size: 3rem;
  }

  .cta h2 {
    font-size: 1.58rem;
  }

  .link-box {
    grid-template-columns: 1fr;
  }

  .copy-btn {
    width: 100%;
  }
}