:root {
  --ink: #13213c;
  --ink-soft: #52617a;
  --paper: #f4f7fb;
  --surface: #ffffff;
  --surface-blue: #edf5ff;
  --line: #dce4ef;
  --brand: #087cf0;
  --brand-dark: #0759b5;
  --navy: #102544;
  --success: #14835f;
  --shadow: 0 18px 55px rgba(19, 33, 60, 0.1);
  --radius-lg: 30px;
  --radius-md: 20px;
  --radius-sm: 12px;
  --content: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    "Noto Sans SC",
    "Microsoft YaHei",
    "PingFang SC",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
}

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

button,
input,
textarea,
select {
  font: inherit;
}

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

:focus-visible {
  outline: 3px solid rgba(8, 124, 240, 0.3);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 999;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--navy);
  color: #fff;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

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

.container {
  width: min(calc(100% - 40px), var(--content));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(220, 228, 239, 0.85);
  background: rgba(244, 247, 251, 0.94);
  backdrop-filter: blur(16px);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  box-shadow: 0 8px 18px rgba(8, 124, 240, 0.2);
}

.brand-copy {
  display: grid;
  line-height: 1.15;
}

.brand-copy small {
  margin-top: 5px;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  padding: 10px 14px;
  border-radius: 10px;
  color: #34435d;
  font-size: 15px;
  font-weight: 650;
  text-decoration: none;
  transition:
    background-color 160ms ease,
    color 160ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: #fff;
  color: var(--brand-dark);
}

.header-contact {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 15px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  color: var(--ink);
  font-size: 14px;
  font-weight: 750;
  text-decoration: none;
}

.menu-toggle {
  width: 44px;
  height: 44px;
  display: none;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
}

.menu-toggle svg {
  width: 22px;
  height: 22px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 76px 0 84px;
}

.hero::before {
  content: "";
  position: absolute;
  width: 460px;
  height: 460px;
  top: -265px;
  right: -120px;
  border: 84px solid rgba(8, 124, 240, 0.07);
  border-radius: 50%;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(380px, 0.75fr);
  align-items: center;
  gap: 78px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--brand-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1,
.page-hero h1 {
  max-width: 720px;
  margin: 0;
  color: var(--navy);
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.hero-lead {
  max-width: 640px;
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.85;
}

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

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 13px;
  font-weight: 750;
  text-decoration: none;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background-color 160ms ease;
}

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

.button-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 12px 26px rgba(8, 124, 240, 0.25);
}

.button-primary:hover {
  background: var(--brand-dark);
}

.button-secondary {
  border-color: var(--line);
  background: var(--surface);
  color: var(--ink);
}

.button-secondary:hover {
  box-shadow: 0 10px 24px rgba(19, 33, 60, 0.08);
}

.hero-points {
  margin: 30px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  color: #40516d;
  font-size: 14px;
  list-style: none;
}

.hero-points li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-points li::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 5px rgba(20, 131, 95, 0.1);
}

.phone-stage {
  position: relative;
  min-height: 510px;
  display: grid;
  place-items: center;
}

.phone-stage::before,
.phone-stage::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: var(--surface-blue);
}

.phone-stage::before {
  width: 410px;
  height: 410px;
}

.phone-stage::after {
  width: 84px;
  height: 84px;
  right: 5px;
  bottom: 50px;
  border: 18px solid var(--brand);
  background: transparent;
}

.phone {
  position: relative;
  z-index: 2;
  width: 292px;
  min-height: 510px;
  overflow: hidden;
  border: 9px solid #102544;
  border-radius: 42px;
  background: #f7f9fc;
  box-shadow: 0 34px 70px rgba(16, 37, 68, 0.24);
  transform: rotate(2deg);
}

.phone-top {
  height: 82px;
  display: flex;
  align-items: end;
  gap: 11px;
  padding: 18px 18px 13px;
  background: var(--brand);
  color: #fff;
}

.phone-avatar {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: #fff;
  color: var(--brand);
  font-size: 14px;
  font-weight: 900;
}

.phone-name {
  display: grid;
  line-height: 1.25;
}

.phone-name strong {
  font-size: 14px;
}

.phone-name small {
  opacity: 0.82;
  font-size: 10px;
}

.phone-body {
  padding: 24px 16px;
}

.message {
  width: fit-content;
  max-width: 82%;
  margin-bottom: 14px;
  padding: 11px 13px;
  border-radius: 15px;
  background: #fff;
  color: #42516a;
  font-size: 12px;
  line-height: 1.55;
  box-shadow: 0 7px 20px rgba(19, 33, 60, 0.07);
}

.message.mine {
  margin-left: auto;
  border-bottom-right-radius: 5px;
  background: var(--brand);
  color: #fff;
}

.message.theirs {
  border-bottom-left-radius: 5px;
}

.phone-security {
  margin-top: 42px;
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 11px;
  border: 1px solid #d7e8fb;
  border-radius: 15px;
  background: #eef6ff;
  color: #26466e;
  font-size: 11px;
  line-height: 1.45;
}

.security-icon,
.icon-box {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  color: var(--brand);
}

.security-icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: #fff;
}

.section {
  padding: 94px 0;
}

.section-white {
  background: var(--surface);
}

.section-dark {
  background: var(--navy);
  color: #fff;
}

.section-head {
  max-width: 690px;
  margin-bottom: 48px;
}

.section-head h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(32px, 4.4vw, 50px);
  line-height: 1.16;
  letter-spacing: -0.035em;
}

.section-head p:last-child {
  margin: 18px 0 0;
  color: var(--ink-soft);
  font-size: 17px;
}

.section-dark .section-head h2,
.section-dark .section-head p:last-child,
.section-dark .eyebrow {
  color: #fff;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.service-panel {
  position: relative;
  min-height: 345px;
  overflow: hidden;
  padding: 36px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper);
}

.service-panel.primary {
  border-color: transparent;
  background: var(--brand);
  color: #fff;
}

.service-panel .icon-box {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 10px 22px rgba(19, 33, 60, 0.08);
}

.service-panel .icon-box svg {
  width: 26px;
  height: 26px;
}

.service-panel h3 {
  margin: 26px 0 10px;
  color: var(--navy);
  font-size: 27px;
  line-height: 1.25;
}

.service-panel.primary h3 {
  color: #fff;
}

.service-panel p {
  max-width: 450px;
  margin: 0;
  color: var(--ink-soft);
}

.service-panel.primary p {
  color: rgba(255, 255, 255, 0.83);
}

.text-link {
  margin-top: 28px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-dark);
  font-weight: 800;
  text-decoration: none;
}

.primary .text-link {
  color: #fff;
}

.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 5px;
}

.record-strip {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 68px;
}

.record-copy h2 {
  margin: 0;
  font-size: clamp(32px, 4.5vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.record-copy p {
  max-width: 620px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.72);
}

.record-box {
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.06);
}

.record-box span {
  display: block;
  color: rgba(255, 255, 255, 0.63);
  font-size: 13px;
}

.record-box strong {
  display: block;
  margin-top: 8px;
  font-size: 22px;
  line-height: 1.35;
}

.record-box a {
  color: #fff;
  text-underline-offset: 4px;
}

.company-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 78px;
}

.company-intro h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.18;
}

.company-intro p {
  margin: 20px 0 0;
  color: var(--ink-soft);
}

.company-list {
  margin: 0;
  border-top: 1px solid var(--line);
}

.company-list > div {
  padding: 20px 0;
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 22px;
  border-bottom: 1px solid var(--line);
}

.company-list dt {
  color: var(--ink-soft);
  font-size: 14px;
}

.company-list dd {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
  overflow-wrap: anywhere;
}

.company-list a {
  color: var(--brand-dark);
}

.page-hero {
  padding: 70px 0 66px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.page-hero h1 {
  font-size: clamp(42px, 5vw, 64px);
}

.page-hero .hero-lead {
  max-width: 760px;
}

.url-card {
  width: min(100%, 760px);
  margin-top: 30px;
  padding: 14px 14px 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border: 1px solid #cfe3fa;
  border-radius: 14px;
  background: var(--surface-blue);
}

.url-card span {
  min-width: 0;
  color: #225184;
  font-size: 14px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.copy-button {
  flex: 0 0 auto;
  min-height: 38px;
  padding: 7px 12px;
  border: 0;
  border-radius: 9px;
  background: var(--brand);
  color: #fff;
  font-size: 13px;
  font-weight: 750;
  cursor: pointer;
}

.support-layout {
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  align-items: start;
  gap: 54px;
}

.contact-panel {
  position: sticky;
  top: 108px;
  padding: 28px;
  border-radius: var(--radius-md);
  background: var(--navy);
  color: #fff;
}

.contact-panel h2 {
  margin: 0;
  font-size: 24px;
}

.contact-panel > p {
  margin: 9px 0 24px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

.contact-method {
  padding: 17px 0;
  display: block;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  text-decoration: none;
}

.contact-method span {
  display: block;
  color: rgba(255, 255, 255, 0.58);
  font-size: 12px;
}

.contact-method strong {
  display: block;
  margin-top: 3px;
  font-size: 16px;
  overflow-wrap: anywhere;
}

.content-section + .content-section {
  margin-top: 60px;
}

.content-section h2 {
  margin: 0 0 22px;
  color: var(--navy);
  font-size: 30px;
  line-height: 1.3;
}

.step-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  list-style: none;
  counter-reset: steps;
}

.step-list li {
  position: relative;
  padding: 22px 0 22px 64px;
  border-top: 1px solid var(--line);
  counter-increment: steps;
}

.step-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.step-list li::before {
  content: counter(steps, decimal-leading-zero);
  position: absolute;
  top: 22px;
  left: 0;
  color: var(--brand);
  font-size: 17px;
  font-weight: 900;
}

.step-list strong {
  display: block;
  margin-bottom: 4px;
  color: var(--ink);
}

.step-list p {
  margin: 0;
  color: var(--ink-soft);
}

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

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

.faq-list summary {
  position: relative;
  padding: 22px 52px 22px 0;
  color: var(--ink);
  font-weight: 750;
  cursor: pointer;
  list-style: none;
}

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

.faq-list summary::after {
  content: "+";
  position: absolute;
  top: 17px;
  right: 0;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--surface-blue);
  color: var(--brand-dark);
  font-size: 22px;
  font-weight: 500;
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-answer {
  max-width: 760px;
  padding: 0 52px 22px 0;
  color: var(--ink-soft);
}

.faq-answer p {
  margin: 0;
}

.policy-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  align-items: start;
  gap: 70px;
}

.policy-toc {
  position: sticky;
  top: 110px;
  padding: 22px 0;
  border-top: 2px solid var(--navy);
  border-bottom: 1px solid var(--line);
}

.policy-toc strong {
  display: block;
  margin-bottom: 12px;
  color: var(--navy);
}

.policy-toc a {
  padding: 6px 0;
  display: block;
  color: var(--ink-soft);
  font-size: 14px;
  text-decoration: none;
}

.policy-toc a:hover {
  color: var(--brand-dark);
}

.policy-article {
  max-width: 820px;
}

.policy-note {
  margin-bottom: 46px;
  padding: 22px 24px;
  border-left: 4px solid var(--brand);
  background: var(--surface-blue);
  color: #315273;
}

.policy-note p {
  margin: 0;
}

.policy-block {
  scroll-margin-top: 108px;
}

.policy-block + .policy-block {
  margin-top: 54px;
}

.policy-block h2 {
  margin: 0 0 18px;
  color: var(--navy);
  font-size: 29px;
  line-height: 1.35;
}

.policy-block h3 {
  margin: 28px 0 10px;
  color: var(--ink);
  font-size: 19px;
}

.policy-block p,
.policy-block li {
  color: #43516a;
}

.policy-block ul,
.policy-block ol {
  padding-left: 1.4em;
}

.policy-block li + li {
  margin-top: 8px;
}

.table-wrap {
  margin-top: 22px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.policy-table {
  width: 100%;
  min-width: 690px;
  border-collapse: collapse;
  font-size: 14px;
}

.policy-table th,
.policy-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.policy-table tr:last-child td {
  border-bottom: 0;
}

.policy-table th {
  background: #f6f8fb;
  color: var(--navy);
  font-size: 13px;
  white-space: nowrap;
}

.policy-table td {
  color: #43516a;
}

.site-footer {
  padding: 62px 0 26px;
  background: #0b1b32;
  color: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.7fr 0.9fr;
  gap: 70px;
}

.footer-brand p {
  max-width: 430px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  text-decoration: none;
}

.footer-logo img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
}

.footer-column h2 {
  margin: 0 0 15px;
  color: rgba(255, 255, 255, 0.48);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-column a,
.footer-column span {
  margin: 8px 0;
  display: block;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.footer-column a:hover {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-bottom {
  margin-top: 52px;
  padding-top: 24px;
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: space-between;
  gap: 9px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.52);
  font-size: 13px;
  text-align: center;
}

.footer-record {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 18px;
}

.footer-record a {
  color: rgba(255, 255, 255, 0.74);
  text-decoration: none;
}

.footer-record a:hover {
  color: #fff;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 100;
  padding: 11px 16px;
  border-radius: 11px;
  background: var(--navy);
  color: #fff;
  font-size: 14px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 16px);
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

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

@media (max-width: 980px) {
  .header-contact {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr 360px;
    gap: 34px;
  }

  .phone-stage {
    transform: scale(0.9);
  }

  .record-strip,
  .company-grid {
    gap: 42px;
  }

  .support-layout {
    grid-template-columns: 285px minmax(0, 1fr);
    gap: 36px;
  }

  .policy-layout {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 42px;
  }
}

@media (max-width: 780px) {
  .container {
    width: min(calc(100% - 30px), var(--content));
  }

  .header-inner {
    min-height: 68px;
  }

  .menu-toggle {
    display: grid;
  }

  .site-nav {
    position: fixed;
    inset: 68px 0 auto;
    padding: 16px 15px 24px;
    display: grid;
    gap: 5px;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
    box-shadow: 0 18px 34px rgba(19, 33, 60, 0.1);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition:
      opacity 160ms ease,
      transform 160ms ease;
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 14px 16px;
    background: #fff;
  }

  .hero {
    padding: 54px 0 66px;
  }

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

  .hero h1,
  .page-hero h1 {
    font-size: clamp(38px, 12vw, 56px);
  }

  .phone-stage {
    min-height: 470px;
    transform: scale(0.9);
    transform-origin: center top;
  }

  .service-grid,
  .record-strip,
  .company-grid,
  .support-layout,
  .policy-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .service-panel {
    min-height: 300px;
  }

  .record-strip {
    gap: 34px;
  }

  .company-grid {
    gap: 42px;
  }

  .contact-panel,
  .policy-toc {
    position: static;
  }

  .policy-toc {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 20px;
  }

  .policy-toc strong {
    grid-column: 1 / -1;
  }

  .footer-grid {
    gap: 38px;
  }

  .footer-bottom {
    align-items: center;
  }
}

@media (max-width: 520px) {
  .brand-copy small {
    display: none;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .phone-stage {
    margin: 10px -24px -40px;
    transform: scale(0.78);
  }

  .section {
    padding: 70px 0;
  }

  .service-panel {
    min-height: auto;
    padding: 28px 24px;
  }

  .company-list > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .page-hero {
    padding: 50px 0 48px;
  }

  .url-card {
    align-items: stretch;
    flex-direction: column;
  }

  .copy-button {
    width: 100%;
  }

  .policy-toc {
    grid-template-columns: 1fr;
  }

  .policy-block h2 {
    font-size: 25px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}