:root {
  --ink: #11182d;
  --muted: #68728a;
  --line: #e8ebf2;
  --blue: #3f74ff;
  --blue-dark: #1f4fff;
  --purple: #a24cff;
  --paper: #ffffff;
  --soft: #f7f9fc;
  --shadow: 0 24px 65px rgba(28, 42, 82, 0.12);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: var(--soft);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--soft);
}

body.modal-open {
  overflow: hidden;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  border: 0;
  cursor: pointer;
}

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

.container {
  width: min(1180px, calc(100% - 44px));
  margin: 0 auto;
}

.narrow-container {
  width: min(920px, calc(100% - 44px));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 68px;
  border-bottom: 1px solid rgba(231, 235, 244, 0.86);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
}

.nav-wrap {
  width: min(1180px, calc(100% - 44px));
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex: 0 0 auto;
}

.brand-icon {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  color: #fff;
  border-radius: 9px;
  background: linear-gradient(145deg, #438aff, #5555f7 55%, #9d4dff);
  box-shadow: 0 8px 18px rgba(71, 100, 255, 0.24);
  font-size: 17px;
  font-weight: 900;
}

.brand strong {
  color: #202944;
  font-size: 17px;
  letter-spacing: -0.3px;
}

.brand strong span {
  color: #566cff;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 30px;
  flex: 1;
  color: #5d667b;
  font-size: 13px;
}

.main-nav a,
.nav-link-button {
  transition: color 150ms ease;
}

.main-nav a:hover,
.nav-link-button:hover {
  color: var(--blue-dark);
}

.main-nav a.is-current {
  color: var(--blue-dark);
  font-weight: 800;
}

.nav-link-button {
  padding: 0;
  color: #5d667b;
  background: transparent;
}

.header-contact {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 36px;
  padding: 0 15px;
  color: #fff;
  border-radius: 19px;
  background: #111827;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 8px 18px rgba(17, 24, 39, 0.15);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #48eea2;
  box-shadow: 0 0 0 4px rgba(72, 238, 162, 0.12);
}

.hero {
  position: relative;
  min-height: 650px;
  overflow: hidden;
  background:
    radial-gradient(circle at 14% 2%, rgba(255, 185, 219, 0.34), transparent 28%),
    radial-gradient(circle at 88% 5%, rgba(139, 189, 255, 0.32), transparent 30%),
    linear-gradient(122deg, #fff7f9 0%, #f6f4ff 45%, #effaff 78%, #fff5eb 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(64, 79, 130, 0.1) 0.6px, transparent 0.6px);
  background-size: 18px 18px;
  mask-image: linear-gradient(to bottom, black, transparent 65%);
  opacity: 0.28;
}

.hero-glow {
  position: absolute;
  z-index: 0;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.22;
}

.hero-glow-one {
  left: 18%;
  top: 130px;
  background: #a66eff;
}

.hero-glow-two {
  right: 15%;
  top: 80px;
  background: #42baff;
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.14fr) minmax(370px, 0.86fr);
  gap: 84px;
  align-items: center;
  min-height: 620px;
  padding: 78px 0 56px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  color: #4e5770;
  border: 1px solid rgba(225, 229, 240, 0.86);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.75);
  box-shadow: 0 8px 25px rgba(48, 59, 99, 0.06);
  font-size: 12px;
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4c79ff;
  box-shadow: 0 0 0 4px rgba(76, 121, 255, 0.11);
}

.hero h1 {
  margin: 24px 0 18px;
  color: #151b31;
  font-size: clamp(50px, 6vw, 78px);
  line-height: 0.98;
  letter-spacing: -4px;
}

.hero h1 span {
  display: inline-block;
  margin-top: 9px;
  color: transparent;
  background: linear-gradient(90deg, #315fff 0%, #8761ff 55%, #d64ed8 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-lead {
  max-width: 640px;
  margin: 0;
  color: #626d84;
  font-size: 16px;
  line-height: 1.95;
}

.hero-buttons {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 47px;
  padding: 0 21px;
  border-radius: 24px;
  font-size: 13px;
  font-weight: 800;
  transition:
    transform 170ms ease,
    box-shadow 170ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #fff;
  background: linear-gradient(100deg, #3278ff, #3157e8);
  box-shadow: 0 13px 28px rgba(53, 104, 244, 0.28);
}

.button-recharge {
  color: #fff;
  background: linear-gradient(100deg, #08a879, #00c995);
  box-shadow: 0 13px 28px rgba(0, 183, 133, 0.24);
}

.button-dark {
  color: #fff;
  background: #111827;
  box-shadow: 0 13px 25px rgba(17, 24, 39, 0.18);
}

.button-purple {
  color: #fff;
  background: linear-gradient(100deg, #a359ff, #7a48ee);
  box-shadow: 0 13px 25px rgba(137, 74, 239, 0.22);
}

.button-light {
  color: #2e4ea9;
  background: #fff;
  box-shadow: 0 12px 30px rgba(35, 53, 111, 0.12);
}

.hero-highlights {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 24px;
  max-width: 590px;
  margin-top: 28px;
}

.hero-highlights > div {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.highlight-icon {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
  color: #3d74ff;
  border: 1px solid #dce6ff;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.8);
  font-size: 12px;
}

.hero-highlights p {
  display: grid;
  gap: 3px;
  margin: 0;
}

.hero-highlights strong {
  font-size: 12px;
}

.hero-highlights small {
  color: #778198;
  font-size: 10px;
}

.service-card {
  position: relative;
  padding: 28px 30px 26px;
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 30px 80px rgba(45, 60, 103, 0.16);
  backdrop-filter: blur(20px);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease;
}

.service-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  z-index: -1;
  padding: 1px;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(123, 151, 255, 0.35), rgba(255, 255, 255, 0.4), rgba(238, 146, 255, 0.22));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}

.service-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #424b60;
  font-size: 12px;
  font-weight: 800;
}

.service-card-top strong {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  color: #09a965;
  border-radius: 12px;
  background: #e9fff5;
  font-size: 10px;
}

.service-card-top i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #1fd383;
  box-shadow: 0 0 0 4px rgba(31, 211, 131, 0.12);
}

.service-number {
  margin-top: 19px;
  color: #131b30;
  font-size: 66px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -4px;
}

.service-number span {
  margin-left: 5px;
  color: #637089;
  font-size: 18px;
  letter-spacing: 0;
}

.service-card > p {
  margin: 7px 0 0;
  color: #7c879c;
  font-size: 11px;
}

.service-divider {
  height: 1px;
  margin: 25px 0 20px;
  background: var(--line);
}

.service-card h2 {
  margin: 0 0 16px;
  font-size: 13px;
}

.service-card ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 13px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: #59657a;
  font-size: 11px;
}

.service-card li {
  display: flex;
  align-items: center;
  gap: 7px;
}

.service-card li span {
  display: grid;
  place-items: center;
  width: 18px;
  height: 18px;
  color: #547cff;
  border-radius: 5px;
  background: #eef3ff;
  font-size: 9px;
}

.brand-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 22px;
}

.brand-tags span {
  padding: 5px 8px;
  color: #627089;
  border-radius: 5px;
  background: #f1f4f9;
  font-size: 9px;
  font-weight: 700;
}

.proof-section,
.faq-section,
.guide-section {
  padding: 110px 0;
}

.proof-section {
  background: #f8faff;
}

.section-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #73809a;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 3px;
}

.section-kicker span {
  display: grid;
  place-items: center;
  width: 31px;
  height: 25px;
  color: #fff;
  border-radius: 7px;
  background: #172033;
  letter-spacing: 0;
}

.section-title {
  margin: 24px 0 8px;
  font-size: clamp(30px, 4vw, 47px);
  line-height: 1.15;
  letter-spacing: -1.8px;
}

.section-subtitle {
  margin: 0;
  color: #7b869c;
  font-size: 14px;
}

.metric-card {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(640px, 100%);
  margin: 54px auto -20px;
  position: relative;
  z-index: 2;
  padding: 17px 0;
  border: 1px solid #edf0f6;
  border-radius: 17px;
  background: #fff;
  box-shadow: 0 18px 45px rgba(40, 56, 101, 0.11);
}

.metric-card div {
  display: grid;
  gap: 3px;
  text-align: center;
  border-right: 1px solid #edf0f5;
}

.metric-card div:last-child {
  border-right: 0;
}

.metric-card strong {
  color: #5374ff;
  font-size: 31px;
  line-height: 1;
}

.metric-card span {
  color: #8a94a7;
  font-size: 10px;
}

.process-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 78px;
  align-items: center;
  max-width: 940px;
  margin: 0 auto;
  padding: 75px 52px 52px;
  border: 1px solid #ecf0f6;
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 26px 70px rgba(32, 46, 86, 0.08);
}

.process-steps {
  display: grid;
  gap: 26px;
}

.process-steps article {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  align-items: flex-start;
}

.process-steps article > span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: #fff;
  border-radius: 13px;
  background: linear-gradient(145deg, #477eff, #7a5bf5);
  box-shadow: 0 9px 22px rgba(72, 111, 242, 0.24);
  font-size: 11px;
  font-weight: 800;
}

.process-steps h3 {
  margin: 1px 0 6px;
  font-size: 15px;
}

.process-steps p {
  margin: 0;
  color: #7b8599;
  font-size: 12px;
  line-height: 1.75;
}

.chat-demo {
  overflow: hidden;
  border: 1px solid #e5e8ef;
  border-radius: 22px;
  background: #f1f2f4;
  box-shadow: 0 22px 50px rgba(29, 41, 75, 0.17);
}

.chat-topbar {
  display: grid;
  grid-template-columns: 35px 1fr 35px;
  align-items: center;
  height: 48px;
  padding: 0 14px;
  background: #fff;
  text-align: center;
  font-size: 11px;
}

.chat-topbar span {
  color: #8791a5;
}

.chat-label {
  padding: 7px 15px;
  color: #7b8596;
  border-top: 1px solid #edf0f5;
  background: #fff;
  font-size: 9px;
  text-align: center;
}

.chat-body {
  min-height: 330px;
  padding: 18px;
}

.chat-time {
  margin: 0 0 16px;
  color: #a0a7b5;
  font-size: 9px;
  text-align: center;
}

.message {
  width: fit-content;
  max-width: 78%;
  margin-bottom: 14px;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 11px;
  line-height: 1.55;
}

.message.customer {
  margin-left: auto;
  color: #fff;
  border-bottom-right-radius: 3px;
  background: #597dff;
}

.message.support {
  color: #4f5a6f;
  border-bottom-left-radius: 3px;
  background: #fff;
  box-shadow: 0 4px 12px rgba(41, 53, 83, 0.07);
}

.chat-input {
  display: grid;
  grid-template-columns: 28px 1fr 28px;
  align-items: center;
  gap: 7px;
  height: 48px;
  padding: 0 10px;
  background: #fff;
  color: #828b9d;
}

.chat-input i {
  padding: 8px 10px;
  color: #abb2c0;
  border: 1px solid #e7eaf0;
  border-radius: 6px;
  font-size: 9px;
  font-style: normal;
}

.faq-section {
  background: #fff;
}

.faq-list {
  margin-top: 45px;
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item > button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 22px 2px;
  text-align: left;
  color: #293147;
  background: transparent;
  font-size: 15px;
  font-weight: 750;
}

.faq-item > button span {
  display: grid;
  place-items: center;
  width: 27px;
  height: 27px;
  flex: 0 0 auto;
  margin-left: 18px;
  color: #516176;
  border-radius: 50%;
  background: #f2f4f8;
  font-size: 16px;
}

.faq-answer {
  display: none;
  padding: 0 48px 22px 2px;
  color: #747f94;
  font-size: 13px;
  line-height: 1.85;
}

.faq-item.is-open .faq-answer {
  display: block;
}

.guide-section {
  background: #f8faff;
}

.tutorial-feature-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 22px;
  margin-top: 38px;
  padding: 25px 28px;
  color: #fff;
  border-radius: 19px;
  background:
    radial-gradient(circle at 88% 12%, rgba(255, 255, 255, 0.2), transparent 26%),
    linear-gradient(105deg, #285fe4, #5557ef 54%, #8c4ee8);
  box-shadow: 0 20px 45px rgba(59, 76, 198, 0.2);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease;
}

.tutorial-feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 25px 55px rgba(59, 76, 198, 0.27);
}

.tutorial-feature-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 17px;
  background: rgba(255, 255, 255, 0.14);
  font-size: 26px;
}

.tutorial-feature-card small {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 2px;
  opacity: 0.75;
}

.tutorial-feature-card h3 {
  margin: 7px 0 4px;
  font-size: 20px;
}

.tutorial-feature-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.75);
  font-size: 12px;
}

.tutorial-feature-card > strong {
  padding: 10px 14px;
  white-space: nowrap;
  border-radius: 19px;
  background: #fff;
  color: #4056bf;
  font-size: 11px;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 48px;
}

.guide-card {
  display: flex;
  flex-direction: column;
  min-height: 225px;
  padding: 24px;
  text-align: left;
  border: 1px solid #e8edf5;
  border-radius: 17px;
  background: #fff;
  box-shadow: 0 10px 30px rgba(37, 51, 91, 0.05);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease;
}

.guide-card:hover {
  border-color: #c5d2ff;
  box-shadow: 0 16px 36px rgba(59, 83, 158, 0.11);
  transform: translateY(-3px);
}

.guide-card-button {
  color: inherit;
}

.guide-card > span {
  width: fit-content;
  padding: 5px 8px;
  color: #3d6fff;
  border-radius: 6px;
  background: #edf3ff;
  font-size: 9px;
  font-weight: 800;
}

.guide-card h3 {
  margin: 17px 0 9px;
  font-size: 16px;
  line-height: 1.45;
}

.guide-card p {
  margin: 0;
  color: #788398;
  font-size: 12px;
  line-height: 1.75;
}

.guide-card b {
  margin-top: auto;
  padding-top: 18px;
  color: #5269c8;
  font-size: 11px;
}

.cta-section {
  padding: 80px 0;
  background: #f8faff;
}

.cta-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 45px 52px;
  overflow: hidden;
  position: relative;
  color: #fff;
  border-radius: 25px;
  background:
    radial-gradient(circle at 86% 15%, rgba(196, 119, 255, 0.6), transparent 27%),
    linear-gradient(110deg, #254bd7 0%, #4c66f1 50%, #7756e9 100%);
  box-shadow: 0 24px 60px rgba(49, 75, 194, 0.24);
}

.cta-card::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -90px;
  width: 280px;
  height: 280px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  box-shadow:
    0 0 0 35px rgba(255, 255, 255, 0.04),
    0 0 0 70px rgba(255, 255, 255, 0.03);
}

.cta-card > * {
  position: relative;
  z-index: 1;
}

.cta-card > div > span {
  font-family: ui-monospace, monospace;
  font-size: 10px;
  letter-spacing: 2.5px;
  opacity: 0.75;
}

.cta-card h2 {
  margin: 13px 0 7px;
  font-size: 31px;
}

.cta-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.75);
  font-size: 13px;
}

.cta-buttons {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.cta-buttons .button-primary {
  color: #3554c5;
  background: #fff;
  box-shadow: none;
}

.cta-buttons .button-light {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: none;
}

.site-footer {
  padding: 70px 0 35px;
  color: #6d778c;
  background: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 0.72fr);
  gap: 48px;
}

.footer-about > p {
  max-width: 330px;
  margin: 17px 0;
  font-size: 12px;
  line-height: 1.75;
}

.footer-contact-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  max-width: 365px;
  padding: 14px;
  border: 1px solid #e9edf4;
  border-radius: 13px;
  background: #fbfcff;
}

.footer-contact-card div {
  display: grid;
  gap: 3px;
}

.footer-contact-card small {
  color: #9aa2b2;
  font-size: 9px;
}

.footer-contact-card strong {
  color: #3d4960;
  font-size: 12px;
}

.footer-contact-card > span {
  grid-column: 1 / -1;
  color: #5d6fca;
  font-size: 10px;
}

.footer-column {
  display: grid;
  align-content: flex-start;
  gap: 12px;
  font-size: 11px;
}

.footer-column h3 {
  margin: 3px 0 7px;
  color: #273047;
  font-size: 12px;
}

.footer-column a,
.footer-column button {
  width: fit-content;
  padding: 0;
  color: #768095;
  background: transparent;
  font-size: 11px;
}

.footer-column a:hover,
.footer-column button:hover {
  color: var(--blue-dark);
}

.footer-bottom {
  margin-top: 55px;
  padding-top: 24px;
  border-top: 1px solid #edf0f5;
  font-size: 9px;
  line-height: 1.8;
}

.footer-bottom p {
  margin: 5px 0;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(14, 20, 36, 0.57);
  backdrop-filter: blur(8px);
}

.modal-backdrop[hidden],
.toast[hidden] {
  display: none;
}

.contact-modal {
  position: relative;
  width: min(450px, 100%);
  padding: 35px 30px 27px;
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.25);
}

.modal-close {
  position: absolute;
  top: 13px;
  right: 14px;
  width: 34px;
  height: 34px;
  color: #68738a;
  border-radius: 50%;
  background: #f1f3f7;
  font-size: 20px;
}

.contact-badge {
  display: inline-flex;
  padding: 6px 9px;
  color: #16895b;
  border-radius: 6px;
  background: #eafff5;
  font-size: 10px;
  font-weight: 800;
}

.contact-modal h2 {
  margin: 16px 0 6px;
  font-size: 27px;
}

.contact-modal > p {
  margin: 0 0 22px;
  color: #7b8598;
  font-size: 12px;
  line-height: 1.65;
}

.contact-option {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
  padding: 13px;
  border: 1px solid #e8ecf3;
  border-radius: 13px;
  background: #fbfcff;
}

.contact-type {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: #fff;
  border-radius: 12px;
  font-weight: 900;
}

.contact-type.qq {
  background: #3483f7;
}

.contact-type.wechat {
  background: #1fbd67;
}

.contact-option div {
  display: grid;
  gap: 3px;
}

.contact-option small {
  color: #929aab;
  font-size: 9px;
}

.contact-option strong {
  color: #344057;
  font-size: 15px;
}

.contact-option button {
  min-height: 34px;
  padding: 0 13px;
  color: #315fe0;
  border-radius: 8px;
  background: #edf3ff;
  font-size: 11px;
  font-weight: 800;
}

.contact-modal .contact-tip {
  margin: 16px 0 0;
  color: #969eae;
  font-size: 10px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 35px;
  z-index: 120;
  transform: translateX(-50%);
  padding: 11px 17px;
  color: #fff;
  border-radius: 9px;
  background: rgba(20, 28, 46, 0.93);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.23);
  font-size: 12px;
}

/* ChatGPT Plus tutorial */
.tutorial-page {
  background: #fff;
}

.tutorial-hero {
  position: relative;
  overflow: hidden;
  min-height: 610px;
  color: #fff;
  background:
    radial-gradient(circle at 82% 5%, rgba(197, 103, 255, 0.48), transparent 30%),
    radial-gradient(circle at 8% 85%, rgba(41, 197, 255, 0.22), transparent 28%),
    linear-gradient(125deg, #111832 0%, #25235c 50%, #6339a8 100%);
}

.tutorial-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: linear-gradient(to bottom, black, transparent 88%);
}

.tutorial-orb {
  position: absolute;
  z-index: 0;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  filter: blur(95px);
  opacity: 0.38;
}

.tutorial-orb-one {
  top: 45px;
  right: 14%;
  background: #c24fff;
}

.tutorial-orb-two {
  bottom: -90px;
  left: 8%;
  background: #28aaff;
}

.tutorial-hero-inner {
  position: relative;
  z-index: 2;
  padding: 64px 0 72px;
}

.tutorial-back {
  display: inline-flex;
  margin-bottom: 42px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
}

.tutorial-back:hover {
  color: #fff;
}

.tutorial-hero .section-kicker {
  color: rgba(255, 255, 255, 0.7);
}

.tutorial-hero .section-kicker span {
  color: #37265d;
  background: #fff;
}

.tutorial-hero h1 {
  margin: 24px 0 18px;
  max-width: 790px;
  font-size: clamp(54px, 7vw, 82px);
  line-height: 1.02;
  letter-spacing: -4px;
}

.tutorial-hero h1 span {
  color: transparent;
  background: linear-gradient(90deg, #80dfff, #deb1ff 55%, #ffacd7);
  -webkit-background-clip: text;
  background-clip: text;
}

.tutorial-hero-inner > p {
  max-width: 760px;
  margin: 0;
  color: rgba(255, 255, 255, 0.73);
  font-size: 16px;
  line-height: 1.9;
}

.tutorial-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
  margin-top: 28px;
}

.tutorial-hero-actions .button-recharge {
  box-shadow: 0 14px 34px rgba(0, 188, 139, 0.25);
}

.tutorial-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 770px;
  margin-top: 42px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
}

.tutorial-facts div {
  display: grid;
  gap: 3px;
  padding: 17px 20px;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}

.tutorial-facts div:last-child {
  border-right: 0;
}

.tutorial-facts strong {
  color: #fff;
  font-size: 18px;
}

.tutorial-facts span {
  color: rgba(255, 255, 255, 0.63);
  font-size: 10px;
}

.tutorial-container {
  max-width: 1080px;
}

.tutorial-steps-section,
.consult-section,
.chat-scenes-section {
  padding: 105px 0;
}

.tutorial-steps-section {
  background: #f7f9ff;
}

.tutorial-section-head {
  margin-bottom: 48px;
}

.tutorial-step {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 42px;
  align-items: center;
  margin-top: 22px;
  padding: 28px;
  border: 1px solid #e6ebf4;
  border-radius: 25px;
  background: #fff;
  box-shadow: 0 18px 48px rgba(38, 52, 93, 0.07);
}

.tutorial-step-reverse {
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
}

.tutorial-step-reverse .tutorial-shot {
  order: 2;
}

.tutorial-step-reverse .tutorial-step-copy {
  order: 1;
}

.tutorial-shot {
  margin: 0;
  overflow: hidden;
  border: 1px solid #dedfed;
  border-radius: 18px;
  background: #0c0c18;
  box-shadow: 0 18px 38px rgba(21, 26, 58, 0.14);
}

.tutorial-shot img {
  display: block;
  width: 100%;
  height: auto;
}

.tutorial-shot figcaption {
  padding: 10px 13px;
  color: #8b94a8;
  border-top: 1px solid #e9ebf0;
  background: #fff;
  font-size: 9px;
}

.tutorial-step-copy {
  padding: 8px 4px;
}

.tutorial-step-number {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: #fff;
  border-radius: 13px;
  background: linear-gradient(145deg, #407dff, #8451e9);
  box-shadow: 0 10px 24px rgba(70, 91, 221, 0.22);
  font-size: 11px;
  font-weight: 900;
}

.tutorial-step-label {
  margin: 22px 0 6px;
  color: #5576dc;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 2px;
}

.tutorial-step h3 {
  margin: 0 0 11px;
  font-size: 25px;
  letter-spacing: -0.7px;
}

.tutorial-step-copy > p:not(.tutorial-step-label) {
  margin: 0;
  color: #727d92;
  font-size: 12px;
  line-height: 1.8;
}

.tutorial-step ul {
  display: grid;
  gap: 8px;
  margin: 19px 0 0;
  padding: 0;
  list-style: none;
}

.tutorial-step li {
  position: relative;
  padding-left: 20px;
  color: #59657a;
  font-size: 11px;
  line-height: 1.65;
}

.tutorial-step li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: #3b78f1;
  font-weight: 900;
}

.tutorial-inline-link,
.tutorial-inline-button {
  display: inline-flex;
  margin-top: 21px;
  padding: 10px 14px;
  color: #315dd8;
  border-radius: 9px;
  background: #edf3ff;
  font-size: 11px;
  font-weight: 800;
}

.tutorial-safety-note {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 15px;
  align-items: center;
  margin-top: 25px;
  padding: 20px 23px;
  border: 1px solid #ffe2ab;
  border-radius: 16px;
  background: #fffaf0;
}

.tutorial-safety-note > span {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  color: #9c6000;
  border-radius: 13px;
  background: #ffedc7;
  font-size: 20px;
  font-weight: 900;
}

.tutorial-safety-note strong {
  display: block;
  margin-bottom: 4px;
  font-size: 13px;
}

.tutorial-safety-note p {
  margin: 0;
  color: #7e6b4e;
  font-size: 11px;
  line-height: 1.7;
}

.consult-section {
  background: #fff;
}

.consult-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 45px;
}

.consult-panel {
  overflow: hidden;
  border: 1px solid #e5eaf2;
  border-radius: 22px;
  background: #fbfcff;
  box-shadow: 0 16px 42px rgba(42, 55, 91, 0.06);
}

.consult-panel-head {
  padding: 25px 26px 21px;
  color: #fff;
}

.consult-before .consult-panel-head {
  background: linear-gradient(110deg, #315ff1, #5c54df);
}

.consult-after .consult-panel-head {
  background: linear-gradient(110deg, #08a778, #1cb5a4);
}

.consult-panel-head span {
  display: inline-flex;
  padding: 5px 8px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.17);
  font-size: 9px;
  font-weight: 800;
}

.consult-panel-head h3 {
  margin: 12px 0 0;
  font-size: 24px;
}

.consult-panel article {
  padding: 19px 24px;
  border-bottom: 1px solid #e9edf4;
}

.consult-panel article:last-child {
  border-bottom: 0;
}

.consult-panel article strong {
  color: #2b344b;
  font-size: 12px;
}

.consult-panel article p {
  margin: 7px 0 0;
  color: #788398;
  font-size: 11px;
  line-height: 1.7;
}

.chat-scenes-section {
  overflow: hidden;
  background:
    radial-gradient(circle at 16% 4%, rgba(82, 124, 255, 0.14), transparent 32%),
    #f7f9ff;
}

.chat-scenes-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
}

.chat-marquee {
  position: relative;
  margin-top: 48px;
  overflow: hidden;
}

.chat-marquee::before,
.chat-marquee::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 2;
  width: 9vw;
  pointer-events: none;
}

.chat-marquee::before {
  left: 0;
  background: linear-gradient(90deg, #f7f9ff, transparent);
}

.chat-marquee::after {
  right: 0;
  background: linear-gradient(-90deg, #f7f9ff, transparent);
}

.chat-scroll-track {
  display: flex;
  gap: 16px;
  width: max-content;
  padding: 10px 0 30px;
  animation: tutorial-chat-scroll 48s linear infinite;
}

.chat-marquee:hover .chat-scroll-track {
  animation-play-state: paused;
}

.conversation-card {
  width: 340px;
  flex: 0 0 auto;
  padding: 20px;
  border: 1px solid #e0e6f1;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 14px 34px rgba(38, 51, 89, 0.08);
}

.conversation-card > span {
  display: inline-flex;
  padding: 5px 8px;
  color: #4168d9;
  border-radius: 6px;
  background: #edf3ff;
  font-size: 9px;
  font-weight: 800;
}

.conversation-card p {
  position: relative;
  width: fit-content;
  max-width: 90%;
  margin: 14px 0 0;
  padding: 10px 12px;
  border-radius: 11px;
  font-size: 11px;
  line-height: 1.6;
}

.buyer-line {
  margin-left: auto !important;
  color: #fff;
  border-bottom-right-radius: 3px !important;
  background: #5a76f4;
}

.support-line {
  color: #5e687c;
  border-bottom-left-radius: 3px !important;
  background: #f1f3f7;
}

@keyframes tutorial-chat-scroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(calc(-50% - 8px));
  }
}

.tutorial-final-cta {
  padding: 82px 0;
  background: #f7f9ff;
}

.mobile-bar {
  display: none;
}

.error-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
  background:
    radial-gradient(circle at 10% 0%, rgba(255, 185, 219, 0.34), transparent 34%),
    radial-gradient(circle at 100% 5%, rgba(139, 189, 255, 0.32), transparent 34%),
    #f7f9ff;
}

.error-card {
  width: min(440px, 100%);
  padding: 42px 30px;
  text-align: center;
  border: 1px solid #e8edf5;
  border-radius: 22px;
  background: #fff;
  box-shadow: var(--shadow);
}

.error-card > .brand {
  justify-content: center;
}

.error-card h1 {
  margin: 28px 0 4px;
  color: transparent;
  background: linear-gradient(90deg, #315fff, #8f55f5);
  -webkit-background-clip: text;
  background-clip: text;
  font-size: 72px;
}

.error-card p {
  color: #778197;
}

.error-home {
  display: inline-grid;
  place-items: center;
  min-height: 42px;
  margin-top: 16px;
  padding: 0 20px;
  color: #fff;
  border-radius: 21px;
  background: linear-gradient(100deg, #3278ff, #6656ec);
  font-size: 12px;
  font-weight: 800;
}

@media (max-width: 980px) {
  .main-nav {
    gap: 18px;
  }

  .hero-grid {
    gap: 38px;
  }

  .hero h1 {
    font-size: 57px;
  }

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

  .footer-grid {
    grid-template-columns: 1.5fr repeat(3, 0.6fr);
    gap: 28px;
  }

  .tutorial-step,
  .tutorial-step-reverse {
    gap: 24px;
  }
}

@media (max-width: 760px) {
  .container,
  .narrow-container,
  .nav-wrap {
    width: min(100% - 30px, 680px);
  }

  .site-header {
    height: 56px;
  }

  .brand-icon {
    width: 26px;
    height: 26px;
    border-radius: 7px;
    font-size: 14px;
  }

  .brand strong {
    font-size: 14px;
  }

  .main-nav {
    display: none;
  }

  .header-contact {
    width: 35px;
    height: 35px;
    padding: 0;
    border-radius: 50%;
    font-size: 0;
  }

  .header-contact::after {
    content: "●";
    color: #fff;
    font-size: 13px;
  }

  .header-contact .status-dot {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-bottom: 0;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 35px;
    min-height: 0;
    padding: 35px 0 50px;
  }

  .eyebrow {
    padding: 7px 10px;
    font-size: 9px;
  }

  .hero h1 {
    margin: 18px 0 14px;
    font-size: clamp(39px, 12.5vw, 55px);
    letter-spacing: -2.8px;
  }

  .hero-lead {
    font-size: 13px;
    line-height: 1.8;
  }

  .hero-buttons {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    margin-top: 22px;
  }

  .button {
    width: 100%;
    min-height: 43px;
    font-size: 12px;
  }

  .hero-highlights {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 20px;
  }

  .service-card {
    padding: 22px 20px;
    border-radius: 18px;
  }

  .service-number {
    font-size: 51px;
  }

  .service-card ul {
    gap: 11px 12px;
    font-size: 10px;
  }

  .proof-section,
  .faq-section,
  .guide-section {
    padding: 75px 0;
  }

  .section-title {
    margin-top: 20px;
    font-size: 31px;
    letter-spacing: -1.2px;
  }

  .section-subtitle {
    font-size: 12px;
    line-height: 1.7;
  }

  .metric-card {
    margin-top: 36px;
    padding: 14px 0;
  }

  .metric-card strong {
    font-size: 24px;
  }

  .process-layout {
    grid-template-columns: 1fr;
    gap: 42px;
    padding: 57px 20px 24px;
    border-radius: 18px;
  }

  .chat-body {
    min-height: 295px;
  }

  .faq-list {
    margin-top: 32px;
  }

  .faq-item > button {
    padding: 19px 0;
    font-size: 13px;
  }

  .faq-answer {
    padding: 0 37px 20px 0;
    font-size: 12px;
  }

  .guide-grid {
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 35px;
  }

  .guide-card {
    min-height: 192px;
    padding: 21px;
  }

  .guide-card h3 {
    font-size: 15px;
  }

  .tutorial-feature-card {
    grid-template-columns: auto 1fr;
    gap: 16px;
    margin-top: 28px;
    padding: 21px;
  }

  .tutorial-feature-icon {
    width: 50px;
    height: 50px;
    border-radius: 14px;
  }

  .tutorial-feature-card h3 {
    font-size: 16px;
  }

  .tutorial-feature-card p {
    line-height: 1.65;
  }

  .tutorial-feature-card > strong {
    grid-column: 1 / -1;
    text-align: center;
  }

  .tutorial-hero {
    min-height: auto;
  }

  .tutorial-hero-inner {
    padding: 40px 0 55px;
  }

  .tutorial-back {
    margin-bottom: 32px;
  }

  .tutorial-hero h1 {
    margin: 20px 0 16px;
    font-size: clamp(42px, 13vw, 59px);
    letter-spacing: -2.7px;
  }

  .tutorial-hero-inner > p {
    font-size: 13px;
    line-height: 1.8;
  }

  .tutorial-hero-actions {
    display: grid;
    gap: 8px;
  }

  .tutorial-facts {
    grid-template-columns: 1fr;
    margin-top: 30px;
  }

  .tutorial-facts div {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }

  .tutorial-facts div:last-child {
    border-bottom: 0;
  }

  .tutorial-steps-section,
  .consult-section,
  .chat-scenes-section {
    padding: 72px 0;
  }

  .tutorial-section-head {
    margin-bottom: 34px;
  }

  .tutorial-step,
  .tutorial-step-reverse {
    grid-template-columns: 1fr;
    gap: 22px;
    padding: 16px;
    border-radius: 19px;
  }

  .tutorial-step-reverse .tutorial-shot,
  .tutorial-step-reverse .tutorial-step-copy {
    order: initial;
  }

  .tutorial-shot {
    border-radius: 13px;
  }

  .tutorial-step-copy {
    padding: 5px 4px 9px;
  }

  .tutorial-step-number {
    width: 40px;
    height: 40px;
  }

  .tutorial-step-label {
    margin-top: 17px;
  }

  .tutorial-step h3 {
    font-size: 21px;
  }

  .tutorial-safety-note {
    grid-template-columns: 40px 1fr;
    padding: 17px;
  }

  .tutorial-safety-note > span {
    width: 40px;
    height: 40px;
  }

  .consult-columns {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 32px;
  }

  .consult-panel-head {
    padding: 22px 20px 18px;
  }

  .consult-panel-head h3 {
    font-size: 21px;
  }

  .consult-panel article {
    padding: 17px 20px;
  }

  .chat-scenes-head {
    display: grid;
    gap: 20px;
  }

  .chat-scenes-head .button {
    width: 100%;
  }

  .chat-marquee {
    margin-top: 32px;
  }

  .conversation-card {
    width: 300px;
    padding: 17px;
  }

  .tutorial-final-cta {
    padding: 55px 0;
  }

  .cta-section {
    padding: 55px 0;
  }

  .cta-card {
    display: grid;
    padding: 32px 22px;
    border-radius: 18px;
  }

  .cta-card h2 {
    font-size: 25px;
  }

  .cta-card p {
    line-height: 1.7;
  }

  .cta-buttons {
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
  }

  .site-footer {
    padding: 55px 0 95px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 34px 22px;
  }

  .footer-about {
    grid-column: 1 / -1;
  }

  .footer-contact-card {
    max-width: 100%;
  }

  .footer-column:last-child {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    margin-top: 38px;
  }

  .mobile-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 70;
    display: grid;
    grid-template-columns: 64px 76px 1fr;
    gap: 5px;
    align-items: center;
    min-height: 64px;
    padding: 7px 10px max(7px, env(safe-area-inset-bottom));
    border-top: 1px solid #e7ebf2;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 -8px 25px rgba(34, 48, 83, 0.09);
    backdrop-filter: blur(16px);
  }

  .mobile-bar button,
  .mobile-bar a {
    display: grid;
    place-items: center;
    gap: 3px;
    min-height: 47px;
    color: #667188;
    background: transparent;
    font-size: 9px;
  }

  .mobile-bar span {
    font-size: 17px;
  }

  .mobile-bar .mobile-buy {
    color: #fff;
    border-radius: 24px;
    background: linear-gradient(100deg, #3a79ff, #5a55ec);
    font-size: 12px;
    font-weight: 800;
  }

  .contact-modal {
    padding: 32px 20px 23px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .chat-scroll-track {
    animation: none !important;
    transform: none !important;
  }
}