:root {
  color-scheme: dark;
  --navy-950: #030916;
  --navy-900: #061127;
  --navy-850: #081934;
  --navy-800: #0b2142;
  --card: rgba(11, 29, 58, 0.78);
  --card-solid: #0b1d3a;
  --line: rgba(125, 181, 255, 0.17);
  --line-strong: rgba(69, 198, 255, 0.38);
  --text: #f4f8ff;
  --muted: #a9b8d2;
  --cyan: #25c7ff;
  --cyan-bright: #72e6ff;
  --blue: #2e7cff;
  --blue-deep: #1955d6;
  --green: #54e3a1;
  --warning: #ffc96b;
  --shadow: 0 24px 70px rgba(0, 5, 18, 0.5);
  --radius-lg: 30px;
  --radius-md: 20px;
  --radius-sm: 13px;
  --shell: min(1120px, calc(100% - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  overflow-x: clip;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at 50% -8%, rgba(31, 111, 255, 0.23), transparent 32%),
    linear-gradient(180deg, var(--navy-950) 0%, #061125 47%, #030914 100%);
  font-family:
    "Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  content: "";
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(116, 177, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(116, 177, 255, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, #000, transparent 84%);
}

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

a {
  color: inherit;
}

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

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 10px;
  color: #00101d;
  background: var(--cyan-bright);
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

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

.page-glow {
  position: fixed;
  z-index: -2;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  filter: blur(105px);
  pointer-events: none;
}

.page-glow-one {
  top: 14%;
  right: -210px;
  background: rgba(25, 131, 255, 0.22);
}

.page-glow-two {
  top: 58%;
  left: -240px;
  background: rgba(0, 200, 255, 0.14);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid rgba(125, 181, 255, 0.1);
  background: rgba(3, 9, 22, 0.78);
  backdrop-filter: blur(20px);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  overflow: hidden;
  border: 1px solid rgba(88, 209, 255, 0.42);
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(46, 124, 255, 0.42), rgba(37, 199, 255, 0.12));
  box-shadow: inset 0 0 20px rgba(69, 198, 255, 0.13), 0 8px 24px rgba(0, 124, 255, 0.24);
}

.brand-mark::after {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--cyan-bright);
  border-radius: 50%;
  content: "";
  box-shadow: 0 0 16px var(--cyan);
}

.brand-mark span {
  position: absolute;
  width: 30px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
}

.brand-mark span:nth-child(2) {
  transform: rotate(60deg);
}

.brand-mark span:nth-child(3) {
  transform: rotate(-60deg);
}

.brand-copy {
  display: grid;
  line-height: 1.25;
}

.brand-copy strong {
  font-size: 16px;
  letter-spacing: 0.04em;
}

.brand-copy small {
  margin-top: 3px;
  color: #8091af;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.nav-contact {
  padding: 9px 17px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: #caefff;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  background: rgba(37, 199, 255, 0.07);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.nav-contact:hover {
  border-color: var(--cyan);
  background: rgba(37, 199, 255, 0.13);
  transform: translateY(-1px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, 0.95fr);
  gap: 56px;
  align-items: center;
  min-height: 720px;
  padding-block: 56px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 13px;
  border: 1px solid rgba(86, 223, 255, 0.22);
  border-radius: 999px;
  color: #bfeeff;
  background: rgba(37, 199, 255, 0.06);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 13px rgba(84, 227, 161, 0.9);
}

.hero h1 {
  margin: 23px 0 22px;
  font-size: clamp(46px, 5.3vw, 76px);
  line-height: 1.08;
  letter-spacing: -0.055em;
}

.hero h1 span {
  color: transparent;
  background: linear-gradient(100deg, #ffffff 8%, #78eaff 52%, #3f8fff 100%);
  background-clip: text;
  -webkit-background-clip: text;
}

.hero-lead {
  max-width: 610px;
  margin: 0;
  color: #b7c6de;
  font-size: 18px;
}

.hero-lead strong {
  color: var(--text);
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 13px;
  color: var(--text);
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.button-primary {
  color: #001329;
  background: linear-gradient(115deg, var(--cyan-bright), #3aa7ff 55%, #5b7fff);
  box-shadow: 0 13px 30px rgba(30, 149, 255, 0.28);
}

.button-primary svg:first-child {
  fill: currentColor;
  stroke: none;
}

.button-primary:hover,
.button-secondary:hover,
.button-ghost:hover {
  transform: translateY(-2px);
}

.button-primary:hover {
  box-shadow: 0 17px 38px rgba(30, 149, 255, 0.4);
}

.button-secondary,
.button-ghost {
  border-color: var(--line-strong);
  color: #d9f4ff;
  background: rgba(13, 40, 76, 0.66);
}

.button-secondary:hover,
.button-ghost:hover {
  border-color: rgba(114, 230, 255, 0.7);
  background: rgba(17, 57, 103, 0.78);
}

.verified-date {
  margin: 18px 0 0;
  color: #687c9d;
  font-size: 12px;
}

.hero-save-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 44px;
  margin-top: 6px;
  color: #8cddff;
  font-size: 13px;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.hero-save-link:hover {
  color: #ffffff;
}

.hero-save-link svg {
  flex: none;
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.hero-save-link + .verified-date {
  margin-top: 2px;
}

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  isolation: isolate;
}

.hero-visual::before {
  position: absolute;
  inset: 9%;
  z-index: -2;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(11, 117, 255, 0.32), transparent 62%),
    conic-gradient(from 45deg, rgba(37, 199, 255, 0.08), rgba(46, 124, 255, 0.35), rgba(37, 199, 255, 0.08));
  box-shadow: 0 0 100px rgba(20, 111, 255, 0.28);
  content: "";
}

.hero-visual::after {
  position: absolute;
  inset: 19%;
  z-index: -1;
  border: 1px solid rgba(87, 216, 255, 0.22);
  border-radius: 50%;
  background:
    radial-gradient(circle at 45% 40%, rgba(93, 226, 255, 0.15), transparent 35%),
    repeating-radial-gradient(circle, rgba(87, 206, 255, 0.08) 0 1px, transparent 1px 14px);
  content: "";
}

.orbit {
  position: absolute;
  border: 1px solid rgba(84, 192, 255, 0.2);
  border-radius: 50%;
}

.orbit::after {
  position: absolute;
  top: 50%;
  left: -4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 17px var(--cyan);
  content: "";
}

.orbit-one {
  inset: 5%;
  animation: spin 22s linear infinite;
}

.orbit-two {
  inset: 13%;
  animation: spin-reverse 17s linear infinite;
}

.orbit-three {
  inset: 27%;
  animation: spin 11s linear infinite;
}

.ai-core {
  display: grid;
  place-items: center;
  width: 148px;
  height: 148px;
  border: 1px solid rgba(112, 227, 255, 0.58);
  border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, #1c79d9, #071c46 64%, #02091b);
  box-shadow:
    inset 0 0 26px rgba(70, 213, 255, 0.32),
    0 0 0 12px rgba(26, 123, 255, 0.08),
    0 0 70px rgba(37, 168, 255, 0.48);
}

.core-label {
  margin-top: 16px;
  font-size: 48px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  text-shadow: 0 0 24px rgba(114, 230, 255, 0.65);
}

.ai-core small {
  margin-top: -20px;
  color: #72e6ff;
  font-size: 8px;
  letter-spacing: 0.24em;
}

.node {
  position: absolute;
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  border: 1px solid rgba(91, 210, 255, 0.55);
  border-radius: 50%;
  color: #a7eeff;
  background: rgba(5, 31, 72, 0.88);
  box-shadow: inset 0 0 18px rgba(37, 199, 255, 0.2), 0 0 24px rgba(37, 158, 255, 0.22);
  font-size: 20px;
}

.node-chat {
  top: 21%;
  left: 9%;
}

.node-cloud {
  top: 18%;
  right: 8%;
}

.node-data {
  bottom: 22%;
  left: 7%;
}

.node-user {
  right: 8%;
  bottom: 20%;
}

.visual-caption {
  position: absolute;
  bottom: 6%;
  display: grid;
  gap: 2px;
  padding: 11px 22px;
  border: 1px solid rgba(92, 203, 255, 0.2);
  border-radius: 999px;
  text-align: center;
  background: rgba(4, 18, 44, 0.8);
  backdrop-filter: blur(10px);
}

.visual-caption strong {
  font-size: 13px;
}

.visual-caption span {
  color: #7891b8;
  font-size: 10px;
  letter-spacing: 0.12em;
}

.notice {
  display: flex;
  gap: 15px;
  align-items: flex-start;
  padding: 20px 22px;
  border: 1px solid rgba(255, 201, 107, 0.24);
  border-radius: 18px;
  background: linear-gradient(110deg, rgba(255, 183, 70, 0.09), rgba(255, 183, 70, 0.035));
}

.notice-icon {
  display: grid;
  flex: 0 0 28px;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid rgba(255, 201, 107, 0.5);
  border-radius: 50%;
  color: #ffe3a6;
  font-weight: 900;
}

.notice strong {
  color: #ffe1a0;
}

.notice p {
  margin: 3px 0 0;
  color: #b7b8b8;
  font-size: 13px;
}

.section {
  padding-block: 110px;
}

.section-heading {
  max-width: 700px;
  margin-bottom: 38px;
}

.section-heading > span,
.contact-kicker,
.prep-heading > div > span {
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.section-heading h2,
.contact-copy h2,
.prep-heading h2,
.final-cta h2 {
  margin: 9px 0 8px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.2;
  letter-spacing: -0.035em;
}

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

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

.plan-card {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(155deg, rgba(15, 42, 79, 0.86), rgba(7, 22, 47, 0.72));
  box-shadow: 0 18px 44px rgba(0, 5, 20, 0.2);
}

.plan-card::before {
  position: absolute;
  top: -70px;
  right: -70px;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: rgba(37, 199, 255, 0.07);
  filter: blur(8px);
  content: "";
}

.plan-featured {
  border-color: rgba(37, 199, 255, 0.46);
  background: linear-gradient(155deg, rgba(16, 65, 113, 0.9), rgba(6, 25, 53, 0.8));
  box-shadow: 0 20px 60px rgba(0, 114, 255, 0.18);
}

.featured-label {
  position: absolute;
  top: 17px;
  right: -36px;
  width: 142px;
  padding: 4px 0;
  color: #001522;
  background: var(--cyan-bright);
  font-size: 10px;
  font-weight: 900;
  text-align: center;
  transform: rotate(42deg);
}

.plan-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.plan-topline h3 {
  margin: 0;
  font-size: 25px;
}

.plan-tag {
  padding: 4px 8px;
  border: 1px solid rgba(119, 194, 255, 0.22);
  border-radius: 999px;
  color: #98b9de;
  font-size: 10px;
}

.price {
  display: flex;
  align-items: baseline;
  gap: 5px;
  margin: 26px 0 13px;
}

.price small {
  align-self: flex-start;
  margin-top: 11px;
  color: #6e86aa;
  font-size: 9px;
  writing-mode: vertical-rl;
}

.price strong {
  font-size: 44px;
  line-height: 1;
  letter-spacing: -0.04em;
}

.price span {
  color: #8094b2;
  font-size: 12px;
}

.plan-desc {
  min-height: 54px;
  margin: 0;
  color: #c1cde0;
  font-size: 13px;
}

.service-icon {
  margin: 24px 0 14px;
  color: transparent;
  background: linear-gradient(115deg, #eefcff, var(--cyan-bright) 52%, #4d8cff);
  background-clip: text;
  -webkit-background-clip: text;
  font-size: 44px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.05em;
}

.plan-card ul {
  display: grid;
  gap: 11px;
  margin: 24px 0 0;
  padding: 21px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.plan-card li {
  position: relative;
  padding-left: 18px;
  color: #93a6c2;
  font-size: 12px;
}

.plan-card li::before {
  position: absolute;
  top: 0.65em;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px rgba(37, 199, 255, 0.65);
  content: "";
}

.source-note {
  margin: 21px 0 0;
  color: #7184a3;
  font-size: 12px;
}

.source-note a {
  color: #8deaff;
  text-underline-offset: 3px;
}

.platform-panel {
  display: grid;
  gap: 20px;
  margin-top: 22px;
  padding: 26px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(7, 24, 50, 0.66);
}

.platform-panel > div:first-child {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
}

.platform-panel > div:first-child strong {
  font-size: 15px;
}

.platform-panel > div:first-child span,
.platform-panel > p {
  color: #7288a8;
  font-size: 11px;
}

.platform-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.platform-cloud span {
  padding: 7px 12px;
  border: 1px solid rgba(87, 200, 255, 0.19);
  border-radius: 999px;
  color: #bed7f1;
  background: rgba(32, 108, 186, 0.11);
  font-size: 11px;
  font-weight: 700;
}

.platform-panel > p {
  margin: 0;
}

.process-section {
  border-block: 1px solid rgba(125, 181, 255, 0.08);
  background: linear-gradient(180deg, rgba(8, 28, 58, 0.46), rgba(4, 15, 33, 0.5));
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step {
  position: relative;
  min-height: 220px;
  padding: 24px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(4, 17, 39, 0.66);
}

.step:not(:last-child)::after {
  position: absolute;
  top: 49px;
  right: -12px;
  z-index: 2;
  width: 20px;
  height: 1px;
  background: rgba(73, 191, 255, 0.58);
  content: "";
}

.step-number {
  display: inline-flex;
  color: transparent;
  background: linear-gradient(90deg, var(--cyan-bright), var(--blue));
  background-clip: text;
  -webkit-background-clip: text;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.step h3 {
  margin: 28px 0 10px;
  font-size: 18px;
}

.step p {
  margin: 0;
  color: #8fa1bd;
  font-size: 13px;
}

.prep-section {
  padding-bottom: 118px;
}

.prep-card {
  padding: 40px;
  border: 1px solid rgba(80, 204, 255, 0.2);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 100% 0, rgba(35, 139, 255, 0.15), transparent 33%),
    linear-gradient(130deg, rgba(11, 40, 76, 0.82), rgba(5, 20, 44, 0.74));
  box-shadow: var(--shadow);
}

.prep-heading {
  display: flex;
  gap: 16px;
  align-items: center;
}

.prep-icon {
  display: grid;
  flex: 0 0 54px;
  place-items: center;
  width: 54px;
  height: 54px;
  border: 1px solid rgba(82, 207, 255, 0.32);
  border-radius: 17px;
  color: var(--cyan-bright);
  background: rgba(37, 199, 255, 0.08);
}

.prep-icon svg {
  width: 26px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.6;
}

.prep-heading h2 {
  margin: 2px 0 0;
  font-size: 28px;
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 13px;
  margin-top: 28px;
}

.check-item {
  display: flex;
  gap: 13px;
  align-items: flex-start;
  padding: 18px;
  border: 1px solid rgba(119, 181, 255, 0.13);
  border-radius: 15px;
  background: rgba(4, 17, 38, 0.5);
}

.check-item > span {
  display: grid;
  flex: 0 0 23px;
  place-items: center;
  width: 23px;
  height: 23px;
  border-radius: 50%;
  color: #001a22;
  background: var(--green);
  font-size: 12px;
  font-weight: 900;
}

.check-item p {
  margin: 0;
  color: #8fa2bf;
  font-size: 12px;
}

.check-item strong {
  display: block;
  margin-bottom: 3px;
  color: #dfeafa;
  font-size: 13px;
}

.contact-section {
  position: relative;
  overflow: hidden;
  padding-block: 110px;
  background:
    radial-gradient(circle at 70% 45%, rgba(37, 199, 255, 0.18), transparent 28%),
    linear-gradient(180deg, #07182f, #061226);
}

.contact-section::after {
  position: absolute;
  right: -12%;
  bottom: -270px;
  width: 650px;
  height: 650px;
  border: 1px solid rgba(83, 198, 255, 0.08);
  border-radius: 50%;
  box-shadow: 0 0 0 80px rgba(83, 198, 255, 0.025), 0 0 0 160px rgba(83, 198, 255, 0.018);
  content: "";
}

.contact-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 80px;
  align-items: center;
}

.contact-copy h2 span {
  color: var(--cyan-bright);
}

.contact-copy > p {
  max-width: 560px;
  color: var(--muted);
}

.button-wide {
  min-width: 170px;
}

.contact-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 17px;
  margin-top: 22px;
  color: #778aa8;
  font-size: 12px;
}

.contact-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.contact-meta i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 9px rgba(84, 227, 161, 0.65);
}

.qr-panel {
  position: relative;
  display: grid;
  justify-items: center;
  padding: 34px 30px 27px;
  border: 1px solid rgba(99, 203, 255, 0.28);
  border-radius: 28px;
  background: linear-gradient(150deg, rgba(18, 54, 95, 0.96), rgba(6, 24, 51, 0.96));
  box-shadow: 0 28px 70px rgba(0, 5, 18, 0.42);
}

.qr-label {
  position: absolute;
  top: -13px;
  padding: 5px 15px;
  border: 1px solid rgba(92, 211, 255, 0.36);
  border-radius: 999px;
  color: #c9f5ff;
  background: #0b2d55;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.qr-crop {
  --qr-size: min(300px, 72vw);
  position: relative;
  box-sizing: content-box;
  width: var(--qr-size);
  height: var(--qr-size);
  overflow: hidden;
  border: 10px solid #fff;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 15px 40px rgba(0, 2, 12, 0.3);
}

.qr-crop img {
  position: absolute;
  top: calc(var(--qr-size) * -3.9088);
  left: calc(var(--qr-size) * -1.9118);
  width: calc(var(--qr-size) * 3.1765);
  max-width: none;
  height: auto;
  pointer-events: none;
  user-select: none;
}

.qr-panel > strong {
  margin-top: 20px;
  font-size: 18px;
}

.qr-panel > span {
  margin-top: 3px;
  color: #8196b5;
  font-size: 11px;
}

.hero-contact {
  width: min(420px, 100%);
  justify-self: center;
  text-align: center;
  scroll-margin-top: 100px;
  padding-block: 26px 22px;
}

.hero-contact .qr-crop {
  --qr-size: 260px;
}

.contact-benefits {
  width: 100%;
  margin-bottom: 16px;
}

.contact-benefits h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.35;
  letter-spacing: 0;
}

.welcome-offer {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 8px;
  margin: 7px 0;
  color: #ffe4ad;
  font-size: 14px;
  line-height: 1.2;
}

.welcome-offer strong {
  color: #ffd27a;
  font-size: 38px;
  font-weight: 900;
}

.welcome-offer small {
  margin-left: 3px;
  font-size: 16px;
  font-weight: 700;
}

.benefit-perks {
  margin: 0;
  color: #d2e9ff;
  font-size: 12px;
  line-height: 1.5;
}

.benefit-note {
  display: block;
  margin-top: 4px;
  color: #a6bad5;
  font-size: 10px;
  line-height: 1.5;
}

.hero-contact-button {
  width: 100%;
  margin-top: 20px;
}

.contact-save-hint {
  margin: 8px 0 0;
  color: #a6bad5;
  font-size: 10px;
  line-height: 1.5;
}

.contact-details {
  grid-template-columns: 1fr;
  max-width: 780px;
  text-align: center;
}

.contact-details .contact-copy > p {
  margin-inline: auto;
}

.contact-details .contact-actions,
.contact-details .contact-meta {
  justify-content: center;
}

.faq-list {
  display: grid;
  gap: 11px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(8, 27, 55, 0.58);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 22px;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary span {
  color: var(--cyan);
  font-size: 21px;
  font-weight: 400;
  transition: transform 180ms ease;
}

.faq-item[open] summary span {
  transform: rotate(45deg);
}

.faq-item p {
  margin: 0;
  padding: 0 22px 21px;
  color: #91a3be;
  font-size: 13px;
}

.final-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 110px;
  padding: 34px 38px;
  border: 1px solid rgba(98, 208, 255, 0.24);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 80% 20%, rgba(37, 199, 255, 0.18), transparent 30%),
    linear-gradient(120deg, rgba(13, 56, 103, 0.85), rgba(6, 24, 52, 0.86));
  box-shadow: var(--shadow);
}

.final-cta > div > span {
  color: var(--cyan);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.final-cta h2 {
  margin-bottom: 0;
  font-size: 25px;
}

.site-footer {
  padding: 34px 0;
  border-top: 1px solid rgba(125, 181, 255, 0.1);
  background: rgba(2, 7, 17, 0.72);
}

.footer-wrap {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
}

.footer-wrap strong {
  font-size: 15px;
}

.footer-wrap p {
  margin: 5px 0 0;
  color: #647795;
  font-size: 10px;
}

.legal {
  text-align: right;
}

.back-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 30;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 13px;
  color: #c9f3ff;
  background: rgba(7, 32, 66, 0.86);
  box-shadow: 0 13px 35px rgba(0, 4, 15, 0.35);
  opacity: 0;
  cursor: pointer;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.back-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.contact-dialog {
  width: min(520px, calc(100% - 28px));
  max-height: calc(100vh - 28px);
  max-height: calc(100dvh - 28px);
  padding: 0;
  overflow: auto;
  border: 1px solid rgba(100, 209, 255, 0.35);
  border-radius: 25px;
  color: var(--text);
  background: #07162d;
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.72);
}

.contact-dialog::backdrop {
  background: rgba(0, 5, 15, 0.78);
  backdrop-filter: blur(10px);
}

.dialog-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  max-height: calc(100vh - 32px);
  max-height: calc(100dvh - 32px);
  padding: 20px;
}

.dialog-heading {
  flex: none;
  width: 100%;
  padding-right: 24px;
}

.dialog-heading h2 {
  margin: 0;
  font-size: 18px;
  line-height: 1.35;
}

.dialog-heading p {
  margin: 6px 0 0;
  color: #b7c6de;
  font-size: 12px;
  line-height: 1.5;
}

.dialog-image-wrap {
  display: flex;
  justify-content: center;
  min-height: 0;
  width: 100%;
}

.dialog-card #full-contact-image {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: min(52vh, 520px);
  object-fit: contain;
  border-radius: 12px;
  pointer-events: auto;
  user-select: auto;
  -webkit-touch-callout: default;
}

.dialog-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  flex: none;
  gap: 8px;
  width: 100%;
}

.dialog-actions .button {
  padding-inline: 8px;
  font-size: 12px;
}

.dialog-save-note {
  flex: none;
  margin: 0;
  color: #a6bad5;
  font-size: 11px;
  line-height: 1.5;
}

.dialog-save-note a {
  color: var(--cyan-bright);
}

.dialog-close {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(151, 205, 255, 0.24);
  border-radius: 50%;
  color: #e8f7ff;
  background: rgba(2, 12, 29, 0.85);
  font-size: 23px;
  cursor: pointer;
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  z-index: 100;
  padding: 10px 16px;
  border: 1px solid rgba(100, 209, 255, 0.3);
  border-radius: 999px;
  color: #e9fbff;
  background: rgba(7, 32, 66, 0.95);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 12px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 600ms ease, transform 600ms ease;
}

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

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes spin-reverse {
  to { transform: rotate(-360deg); }
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 70px;
    text-align: center;
  }

  .hero-copy {
    display: grid;
    justify-items: center;
  }

  .hero-contact {
    order: -1;
  }

  .hero-visual {
    width: min(560px, 92vw);
    margin-inline: auto;
  }

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

  .plan-desc {
    min-height: 0;
  }

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

  .step:not(:last-child)::after {
    display: none;
  }

  .contact-shell {
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .contact-copy {
    text-align: center;
  }

  .contact-copy > p {
    margin-inline: auto;
  }

  .contact-actions,
  .contact-meta {
    justify-content: center;
  }

  .qr-panel {
    width: min(420px, 100%);
    margin-inline: auto;
  }
}

@media (max-width: 680px) {
  :root {
    --shell: min(1120px, calc(100% - 28px));
  }

  .nav-wrap {
    min-height: 68px;
  }

  .brand-copy small {
    display: none;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .nav-contact {
    padding: 8px 13px;
    font-size: 12px;
  }

  .hero {
    gap: 32px;
    padding-block: 24px 50px;
  }

  .hero-contact {
    padding-block: 20px;
  }

  .hero-contact .qr-crop {
    --qr-size: min(230px, 58vw);
  }

  .contact-benefits h2 {
    font-size: 20px;
  }

  .welcome-offer {
    margin-block: 6px;
    font-size: 13px;
  }

  .welcome-offer strong {
    font-size: 32px;
  }

  .benefit-perks {
    font-size: 11px;
  }

  .hero-contact > strong {
    margin-top: 10px;
    font-size: 16px;
  }

  .hero-contact-button {
    margin-top: 10px;
  }

  .hero h1 {
    margin-top: 20px;
    font-size: clamp(40px, 13vw, 58px);
  }

  .hero-lead {
    font-size: 15px;
  }

  .hero-actions {
    width: 100%;
  }

  .hero-actions .button {
    flex: 1 1 100%;
  }

  .hero-visual {
    width: min(390px, 100%);
  }

  .ai-core {
    width: 112px;
    height: 112px;
  }

  .core-label {
    font-size: 37px;
  }

  .node {
    width: 41px;
    height: 41px;
    font-size: 16px;
  }

  .visual-caption {
    bottom: 2%;
  }

  .notice {
    padding: 17px;
  }

  .section,
  .contact-section {
    padding-block: 80px;
  }

  .section-heading {
    margin-bottom: 28px;
  }

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

  .plan-card {
    padding: 24px;
  }

  .platform-panel {
    padding: 22px 20px;
  }

  .platform-panel > div:first-child {
    align-items: flex-start;
    flex-direction: column;
    gap: 3px;
  }

  .steps,
  .check-grid {
    grid-template-columns: 1fr;
  }

  .step {
    min-height: 0;
  }

  .step h3 {
    margin-top: 18px;
  }

  .prep-section {
    padding-bottom: 85px;
  }

  .prep-card {
    padding: 25px 20px;
    border-radius: 22px;
  }

  .prep-heading {
    align-items: flex-start;
  }

  .prep-heading h2 {
    font-size: 23px;
  }

  .contact-shell {
    gap: 48px;
  }

  .contact-actions .button {
    flex: 1 1 100%;
  }

  .qr-panel {
    padding-inline: 16px;
  }

  .faq-item summary {
    padding: 18px;
  }

  .faq-item p {
    padding-inline: 18px;
  }

  .final-cta {
    align-items: stretch;
    flex-direction: column;
    margin-bottom: 80px;
    padding: 28px 24px;
    text-align: center;
  }

  .final-cta h2 {
    font-size: 22px;
  }

  .back-top {
    display: none;
  }

  .footer-wrap {
    align-items: flex-start;
    flex-direction: column;
  }

  .legal {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media print {
  .site-header,
  .back-top,
  .hero-actions,
  .contact-actions,
  .page-glow {
    display: none !important;
  }

  body {
    color: #111;
    background: #fff;
  }

  .plan-card,
  .prep-card,
  .step,
  .faq-item,
  .qr-panel,
  .notice {
    border-color: #bbb;
    color: #111;
    background: #fff;
    box-shadow: none;
  }
}