:root {
  --bg: #07090d;
  --bg-2: #10131a;
  --surface: rgba(20, 25, 35, 0.82);
  --surface-2: rgba(255, 255, 255, 0.055);
  --ink: #f7fbff;
  --ink-soft: #c9d2df;
  --muted: #8f9baa;
  --line: rgba(255, 255, 255, 0.13);
  --line-strong: rgba(124, 192, 255, 0.38);
  --blue: #2f8dff;
  --blue-2: #54b7ff;
  --jade: #46d7c2;
  --gold: #cda45e;
  --orange: #f08b4f;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
  --radius: 8px;
  --container: 1240px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(135deg, rgba(31, 116, 201, 0.18), transparent 28%),
    linear-gradient(215deg, rgba(70, 215, 194, 0.1), transparent 32%),
    linear-gradient(0deg, rgba(205, 164, 94, 0.12), transparent 24%),
    #07090d;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.16;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), transparent 58%);
}

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

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--jade);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 20;
  transform: translateY(-140%);
  border-radius: var(--radius);
  background: var(--ink);
  color: #07111f;
  padding: 10px 14px;
  transition: transform 180ms var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-shell {
  overflow: hidden;
}

.site-header {
  position: fixed;
  top: 18px;
  left: 0;
  right: 0;
  z-index: 12;
  padding: 0 24px;
}

.nav-bar {
  width: min(var(--container), calc(100vw - 48px));
  min-height: 58px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(9, 11, 16, 0.78);
  box-shadow: 0 18px 52px rgba(0, 0, 0, 0.36);
  backdrop-filter: blur(18px);
  padding: 8px 10px 8px 18px;
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.brand img,
.footer-brand img,
.large-brand img {
  border-radius: var(--radius);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-soft);
  font-size: 14px;
}

.nav-links a,
.nav-action {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: inherit;
  cursor: pointer;
  padding: 0 16px;
  transition: background 180ms var(--ease), color 180ms var(--ease);
}

.nav-links a:hover,
.nav-action:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--ink);
}

.login-link {
  justify-self: end;
  min-width: 64px;
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--blue), var(--blue-2));
  font-weight: 700;
  box-shadow: 0 10px 24px rgba(47, 141, 255, 0.35);
}

.menu-button {
  display: none;
  justify-self: end;
  width: 52px;
  height: 52px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
}

.menu-button svg,
.primary-cta svg,
.plan-button svg,
.consult-button svg,
.copy-button svg,
.feature-card svg,
.quota-block svg {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
}

.hero-section {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 170px 24px 74px;
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 50% 30%, rgba(47, 141, 255, 0.16), transparent 36%),
    linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.34) 72%, rgba(0, 0, 0, 0.78));
}

.hero-glow {
  display: none;
}

.hero-content {
  position: relative;
  width: min(920px, 100%);
  margin: 0 auto;
  text-align: center;
}

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--jade);
  font-size: 14px;
  font-weight: 800;
}

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

#hero-title {
  margin: 0;
}

.hero-terminal,
.hero-main {
  display: block;
}

.hero-terminal {
  min-height: 82px;
  color: var(--ink);
  font-size: 64px;
  line-height: 1.12;
  font-weight: 900;
}

.hero-terminal [data-rotating-word],
.cursor {
  color: var(--jade);
}

.cursor {
  animation: blink 1s steps(1, end) infinite;
}

.hero-main {
  margin-top: 12px;
  color: transparent;
  background: linear-gradient(90deg, #3c91ff 0%, #83f0df 52%, #d6b36f 100%);
  background-clip: text;
  font-size: 68px;
  line-height: 1.12;
  font-weight: 900;
}

.hero-copy {
  width: min(720px, 100%);
  margin: 30px auto 0;
  color: var(--ink-soft);
  font-size: 19px;
  line-height: 1.9;
}

.primary-cta {
  min-height: 60px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 38px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--blue), #45b7ff);
  color: var(--ink);
  font-weight: 900;
  padding: 0 32px;
  box-shadow: 0 18px 44px rgba(47, 141, 255, 0.35);
}

.button-reset {
  cursor: pointer;
}

.feature-row {
  position: relative;
  width: min(920px, calc(100vw - 48px));
  margin: 42px auto 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card,
.plan-card,
.enterprise-card,
.review-card,
.quota-card,
.placeholder-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(24, 31, 43, 0.86), rgba(13, 15, 21, 0.88));
  box-shadow: var(--shadow);
}

.feature-card {
  min-height: 104px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 22px;
}

.feature-card svg,
.quota-block svg,
.enterprise-card li svg {
  color: var(--blue-2);
}

.feature-card h2 {
  margin-bottom: 4px;
  font-size: 17px;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.section-band {
  padding: 108px 24px;
}

.pricing-section {
  background: #121212;
}

.section-heading {
  width: min(820px, 100%);
  margin: 0 auto 52px;
  text-align: center;
}

.section-heading h2 {
  margin-bottom: 16px;
  font-size: 42px;
  line-height: 1.18;
}

.section-heading p:not(.section-kicker) {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}

.compact {
  margin-bottom: 36px;
}

.plans-grid {
  width: min(var(--container), 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  align-items: end;
  gap: 18px;
}

.plan-card {
  position: relative;
  min-height: 452px;
  padding: 42px 34px 32px;
}

.featured-plan {
  border-color: rgba(84, 125, 255, 0.9);
  box-shadow: 0 0 0 1px rgba(84, 125, 255, 0.24), 0 26px 70px rgba(34, 77, 255, 0.2);
  transform: translateY(-26px);
}

.badge,
.enterprise-label {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 999px;
  background: #6273ff;
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  padding: 7px 18px;
}

.plan-card h3,
.enterprise-card h3 {
  margin-bottom: 10px;
  font-size: 24px;
}

.plan-subtitle {
  color: var(--muted);
  font-size: 15px;
}

.price {
  margin: 34px 0 32px;
  color: var(--muted);
  font-weight: 700;
}

.price span {
  color: var(--ink);
  font-size: 46px;
  line-height: 1;
  font-weight: 900;
}

.plan-card ul,
.enterprise-card ul {
  list-style: none;
  padding: 28px 0 0;
  margin: 0;
  border-top: 1px solid var(--line);
}

.plan-card li,
.enterprise-card li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 18px;
  color: var(--ink-soft);
  line-height: 1.55;
}

.plan-card li svg {
  color: #8ca1ff;
  margin-top: 2px;
}

.plan-button,
.consult-button,
.copy-button,
.back-home {
  min-height: 44px;
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 0;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.14);
  color: var(--ink);
  font-weight: 800;
  cursor: pointer;
  padding: 0 18px;
  transition: transform 180ms var(--ease), background 180ms var(--ease);
}

.plan-button:hover,
.consult-button:hover,
.copy-button:hover,
.primary-cta:hover {
  transform: translateY(-2px);
}

.primary-plan {
  background: linear-gradient(135deg, #4568ff, var(--blue));
}

.enterprise-card {
  position: relative;
  min-height: 452px;
  padding: 38px 32px 32px;
  overflow: hidden;
  border-color: rgba(205, 164, 94, 0.48);
  background:
    repeating-linear-gradient(135deg, rgba(205, 164, 94, 0.13) 0 1px, transparent 1px 18px),
    linear-gradient(180deg, rgba(39, 34, 30, 0.92), rgba(14, 18, 27, 0.92));
}

.enterprise-label {
  top: 20px;
  left: auto;
  right: 22px;
  transform: none;
  background: rgba(205, 164, 94, 0.16);
  color: #ffd292;
}

.enterprise-icon {
  width: 54px;
  height: 54px;
  margin: 0 0 22px;
  border-radius: var(--radius);
  background: var(--orange);
  padding: 14px;
}

.enterprise-card p {
  color: var(--muted);
  line-height: 1.7;
}

.enterprise-card ul {
  border-top: 0;
  padding-top: 12px;
}

.enterprise-card li svg {
  color: var(--orange);
}

.consult-button {
  margin-top: 14px;
  background: linear-gradient(135deg, #f08b4f, #f2a66f);
}

.quota-block {
  width: min(600px, 100%);
  margin: 72px auto 0;
  text-align: center;
}

.quota-block h3 {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  font-size: 24px;
}

.quota-points {
  display: flex;
  justify-content: center;
  gap: 36px;
  margin-bottom: 40px;
  color: var(--muted);
}

.quota-points span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.quota-points svg {
  width: 16px;
  height: 16px;
  color: var(--orange);
}

.quota-card {
  width: min(420px, 100%);
  margin: 0 auto;
  padding: 40px 44px;
  background: rgba(255, 255, 255, 0.08);
}

.quota-card p,
.quota-card span {
  color: var(--muted);
}

.quota-card strong {
  display: block;
  font-size: 28px;
}

.quota-card span {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin: 20px 0;
}

.quota-card span::before,
.quota-card span::after {
  content: "";
  width: 42px;
  height: 1px;
  background: var(--line);
}

.quota-credit {
  color: var(--orange);
  font-size: 36px;
}

.quota-card a {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 28px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: var(--radius);
  font-weight: 800;
}

.reviews-section {
  background: #0f1010;
}

.review-marquee {
  width: min(var(--container), 100%);
  margin: 0 auto;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, black 8%, black 92%, transparent);
}

.review-track {
  display: grid;
  grid-template-columns: repeat(8, minmax(260px, 1fr));
  gap: 18px;
  animation: reviewDrift 28s linear infinite;
}

.review-card {
  min-height: 220px;
  padding: 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.035));
}

.avatar {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--blue), var(--jade));
  color: #031017;
  font-weight: 900;
}

.review-card p {
  color: var(--ink-soft);
  line-height: 1.75;
}

.review-card strong,
.review-card small {
  display: block;
}

.review-card small {
  margin-top: 4px;
  color: var(--muted);
}

.faq-section {
  background: #0e0f0f;
}

.faq-list {
  width: min(620px, 100%);
  margin: 0 auto;
}

details {
  margin-bottom: 16px;
  border: 1px solid rgba(205, 164, 94, 0.28);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(205, 164, 94, 0.22), rgba(47, 141, 255, 0.1));
}

summary {
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  padding: 0 22px;
  font-weight: 800;
}

summary::after {
  content: "+";
  color: var(--blue-2);
  font-size: 18px;
}

details[open] summary::after {
  content: "-";
}

details p {
  margin: 0;
  padding: 0 22px 22px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.site-footer {
  min-height: 300px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: start;
  padding: 70px max(24px, calc((100vw - var(--container)) / 2)) 34px;
  background: linear-gradient(180deg, #0d0e0e, #12302f);
  border-top: 1px solid var(--line);
}

.site-footer p {
  color: var(--muted);
}

.wechat-link {
  border: 0;
  background: transparent;
  color: var(--jade);
  cursor: pointer;
  padding: 0;
  font-weight: 800;
}

.footer-links {
  display: grid;
  gap: 12px;
  justify-self: end;
}

.footer-links a {
  color: var(--ink-soft);
}

.copyright {
  grid-column: 1 / -1;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 13px;
}

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

.contact-modal {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  padding: 24px;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(12px);
}

.modal-panel {
  position: relative;
  width: min(390px, 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #121820;
  box-shadow: var(--shadow);
  text-align: center;
  padding: 34px;
}

.modal-panel img {
  width: 220px;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
}

.wechat-id {
  margin: 18px 0;
  color: var(--ink-soft);
}

.copy-button {
  background: linear-gradient(135deg, var(--blue), var(--jade));
  color: #031017;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 500ms var(--ease), transform 500ms var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.placeholder-page {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.placeholder-shell {
  width: min(760px, 100%);
}

.large-brand {
  margin-bottom: 24px;
}

.placeholder-card {
  padding: 44px;
}

.placeholder-card h1 {
  font-size: 44px;
  line-height: 1.16;
}

.placeholder-card p {
  color: var(--ink-soft);
  line-height: 1.8;
}

.placeholder-actions {
  display: flex;
  gap: 14px;
  margin-top: 28px;
}

.placeholder-actions .primary-cta,
.placeholder-actions .plan-button {
  flex: 1;
  margin-top: 0;
}

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

.mini-plan-grid span {
  min-height: 48px;
  display: flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink-soft);
  padding: 0 14px;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

@keyframes reviewDrift {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-42%);
  }
}

@media (max-width: 1120px) {
  .plans-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .featured-plan {
    transform: none;
  }

  .enterprise-card,
  .plan-card {
    min-height: 430px;
  }
}

@media (max-width: 820px) {
  .site-header {
    top: 0;
    padding: 0;
  }

  .nav-bar {
    width: 100%;
    min-height: 72px;
    grid-template-columns: 1fr auto;
    border-left: 0;
    border-right: 0;
    border-top: 0;
    border-radius: 0;
    padding: 10px 18px;
  }

  .nav-links {
    position: absolute;
    top: 78px;
    right: 18px;
    width: min(260px, calc(100vw - 36px));
    display: none;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(10, 13, 19, 0.96);
    padding: 10px;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a,
  .nav-action {
    justify-content: flex-start;
    width: 100%;
  }

  .login-link {
    display: none;
  }

  .menu-button {
    display: inline-flex;
  }

  .hero-section {
    min-height: auto;
    padding: 132px 18px 56px;
  }

  .hero-content {
    text-align: left;
  }

  .hero-terminal {
    min-height: 112px;
    font-size: 46px;
  }

  .hero-main {
    font-size: 48px;
  }

  .hero-copy {
    margin-left: 0;
    font-size: 18px;
  }

  .primary-cta {
    width: 100%;
  }

  .feature-row {
    width: 100%;
    grid-template-columns: 1fr;
  }

  .section-band {
    padding: 78px 18px;
  }

  .section-heading {
    text-align: left;
  }

  .section-heading h2 {
    font-size: 34px;
  }

  .section-heading p:not(.section-kicker) {
    font-size: 16px;
  }

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

  .plan-card,
  .enterprise-card {
    min-height: auto;
    padding: 34px 26px 28px;
  }

  .quota-points {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

  .review-marquee {
    mask-image: none;
    overflow: visible;
  }

  .review-track {
    display: grid;
    grid-template-columns: 1fr;
    animation: none;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }

  .footer-links {
    justify-self: start;
  }

  .placeholder-card {
    padding: 30px 22px;
  }

  .placeholder-card h1 {
    font-size: 34px;
  }

  .placeholder-actions {
    flex-direction: column;
  }

  .mini-plan-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 420px) {
  .hero-terminal {
    min-height: 44px;
    white-space: nowrap;
    font-size: 32px;
  }

  .hero-main {
    font-size: 36px;
  }

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

  .price span {
    font-size: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

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