:root {
  --ink: #17181c;
  --ink-soft: #30323a;
  --muted: #626673;
  --subtle: #8a8e99;
  --paper: #f6f7f9;
  --surface: #ffffff;
  --surface-soft: #fbfcfe;
  --line: #dfe3ea;
  --soft-line: #eceff4;
  --blue: #0b6ff0;
  --blue-dark: #075cc8;
  --jade: #176d59;
  --amber: #b37622;
  --charcoal: #101114;
  --charcoal-2: #17191f;
  --white: #ffffff;
  --shadow-sm: 0 10px 28px rgba(17, 24, 39, 0.06);
  --shadow-md: 0 20px 54px rgba(17, 24, 39, 0.1);
  --shadow-lg: 0 30px 80px rgba(0, 0, 0, 0.24);
  --page-gutter: clamp(20px, 5vw, 72px);
  --section-y: clamp(68px, 9vw, 116px);
  --radius: 8px;
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans CJK SC", "Noto Sans SC", sans-serif;
  --font-display: "MiSans", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  padding-bottom: calc(92px + env(safe-area-inset-bottom));
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.62;
  letter-spacing: 0;
  overflow-x: hidden;
  word-break: normal;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

a,
button {
  min-width: 0;
}

button {
  font: inherit;
}

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

:where(h1, h2, p, a, button, strong, small, span, li) {
  overflow-wrap: break-word;
}

:focus-visible {
  outline: 3px solid rgba(11, 111, 240, 0.42);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 100;
  padding: 10px 14px;
  color: var(--white);
  background: var(--charcoal);
  border-radius: var(--radius);
  font-weight: 800;
  transform: translateY(-140%);
  transition: transform 160ms ease;
}

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

.claim-band,
.section {
  scroll-margin-top: 126px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: minmax(190px, auto) minmax(220px, 1fr) auto;
  align-items: center;
  gap: clamp(14px, 3vw, 36px);
  min-height: 66px;
  padding: 10px var(--page-gutter);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(223, 227, 234, 0.9);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.brand > span:last-child {
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  color: var(--white);
  background: var(--ink);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 900;
  box-shadow: var(--shadow-sm);
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.12;
}

.brand strong {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 900;
  letter-spacing: 0;
}

.brand small {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
  white-space: nowrap;
}

.top-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 750;
}

.top-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 7px 12px;
  border-radius: var(--radius);
  white-space: nowrap;
  transition: background 160ms ease, color 160ms ease;
}

.top-nav a:hover {
  color: var(--blue);
  background: rgba(11, 111, 240, 0.08);
}

.header-tools {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.language-switch {
  display: inline-grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  padding: 3px;
  background: #eef1f5;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.language-switch button {
  min-width: 38px;
  min-height: 34px;
  padding: 6px 8px;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 850;
  line-height: 1;
}

.language-switch button[aria-pressed="true"] {
  color: var(--white);
  background: var(--ink);
}

.header-contact {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 9px 16px;
  color: var(--white);
  background: var(--blue);
  border-radius: var(--radius);
  font-weight: 850;
  line-height: 1;
  white-space: nowrap;
  box-shadow: 0 14px 28px rgba(11, 111, 240, 0.2);
}

.header-contact:hover {
  background: var(--blue-dark);
}

.hero {
  position: relative;
  display: grid;
  align-items: end;
  min-height: min(700px, 78svh);
  overflow: hidden;
  color: var(--white);
  background: var(--charcoal);
}

.hero-media,
.hero-media img,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 56% center;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(8, 12, 18, 0.88) 0%, rgba(8, 12, 18, 0.66) 42%, rgba(8, 12, 18, 0.36) 100%),
    linear-gradient(180deg, rgba(8, 12, 18, 0.22) 0%, rgba(8, 12, 18, 0.74) 100%);
}

.hero-content {
  position: relative;
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: 82px 0 72px;
  text-align: left;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 850;
  line-height: 1.35;
  letter-spacing: 0;
  text-transform: none;
}

.hero .eyebrow,
.final-cta .eyebrow,
.visual-section .eyebrow {
  color: #83bdff;
}

h1,
h2 {
  margin: 0;
  padding-block: 0.04em;
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 0;
  text-wrap: balance;
}

h1 {
  max-width: 780px;
  font-size: 72px;
}

h1 span {
  display: block;
}

h2 {
  font-size: 48px;
}

p {
  margin: 0;
}

.hero-copy {
  max-width: 760px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 21px;
  line-height: 1.55;
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: 12px;
  margin-top: 32px;
}

.hero-note {
  max-width: 640px;
  margin: 16px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 15px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: 8px;
  margin-top: 22px;
}

.hero-badges span,
.system-trust span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 7px 11px;
  color: rgba(255, 255, 255, 0.94);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 850;
  line-height: 1.18;
  backdrop-filter: blur(10px);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 14px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 850;
  line-height: 1.15;
  text-align: center;
  white-space: normal;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, border-color 160ms ease;
}

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

.btn-primary {
  color: var(--white);
  background: var(--blue);
  box-shadow: 0 16px 34px rgba(11, 111, 240, 0.24);
}

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

.btn-secondary {
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

.btn-plain {
  color: var(--blue);
  background: var(--surface);
  border-color: var(--line);
}

.btn-plain:hover {
  border-color: rgba(11, 111, 240, 0.28);
  box-shadow: 0 10px 24px rgba(11, 111, 240, 0.08);
}

.claim-band,
.section {
  padding: var(--section-y) 0;
}

.claim-band {
  background: var(--paper);
  border-bottom: 1px solid var(--soft-line);
}

.section-inner {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.claim-layout,
.visual-layout,
.promise-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(300px, 0.98fr);
  gap: clamp(30px, 7vw, 84px);
  align-items: center;
}

.claim-layout h2,
.visual-layout h2,
.promise-layout h2,
.final-layout h2 {
  max-width: 760px;
}

.claim-layout p,
.section-heading p,
.visual-layout p {
  max-width: 720px;
  margin-top: 16px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.58;
  text-wrap: pretty;
}

.contact-steps {
  counter-reset: contact-step;
  display: grid;
  gap: 10px;
  max-width: 650px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.contact-steps li {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 54px;
  padding: 13px 16px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--soft-line);
  border-radius: var(--radius);
  font-weight: 760;
  box-shadow: var(--shadow-sm);
}

.contact-steps li::before {
  counter-increment: contact-step;
  content: counter(contact-step);
  display: grid;
  flex: 0 0 28px;
  place-items: center;
  width: 28px;
  height: 28px;
  color: var(--white);
  background: var(--jade);
  border-radius: 7px;
  font-size: 13px;
  font-weight: 900;
  line-height: 1;
}

.contact-panel {
  display: grid;
  justify-self: end;
  width: min(420px, 100%);
  gap: 14px;
  min-width: 0;
  padding: 28px;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--soft-line);
  border-top: 4px solid var(--blue);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(18px);
}

.contact-panel strong {
  display: block;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 900;
  line-height: 1.15;
  text-align: center;
  overflow-wrap: anywhere;
}

.qr-card {
  display: grid;
  justify-items: center;
  gap: 12px;
  margin: 2px 0 8px;
  padding: 0;
  background: transparent;
  border: 0;
}

.qr-card img {
  width: min(238px, 100%);
  height: auto;
  aspect-ratio: 1;
  object-fit: contain;
  padding: 12px;
  background: var(--surface-soft);
  border: 1px solid var(--soft-line);
  border-radius: var(--radius);
}

.qr-card figcaption {
  display: grid;
  gap: 3px;
  text-align: center;
}

.qr-card figcaption span {
  color: var(--ink);
  font-weight: 850;
}

.qr-card figcaption small {
  color: var(--muted);
  font-size: 13px;
}

.section-heading {
  max-width: 910px;
  margin: 0 auto 38px;
  text-align: center;
}

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

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

.proof-grid article,
.promise-grid article {
  position: relative;
  display: grid;
  align-content: start;
  gap: 10px;
  min-width: 0;
  min-height: 172px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--soft-line);
  border-top: 3px solid var(--blue);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.proof-grid article:nth-child(2),
.promise-grid article:nth-child(2) {
  border-top-color: var(--jade);
}

.proof-grid article:nth-child(3),
.promise-grid article:nth-child(3) {
  border-top-color: var(--amber);
}

.proof-grid article:nth-child(4) {
  border-top-color: #7b61ff;
}

.proof-grid strong,
.promise-grid strong {
  display: block;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  line-height: 1.25;
}

.proof-grid span,
.promise-grid span,
.plain-list {
  color: var(--muted);
}

.proof-grid span,
.promise-grid span {
  line-height: 1.58;
}

.visual-section {
  color: var(--white);
  background: var(--charcoal);
}

.visual-layout {
  align-items: center;
}

.visual-section p,
.visual-section .plain-list {
  color: rgba(255, 255, 255, 0.82);
}

.plain-list {
  display: grid;
  gap: 10px;
  margin: 24px 0 0;
  padding-left: 20px;
}

.plain-list li::marker {
  color: #83bdff;
}

.system-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.report-figure {
  margin: 0;
}

.report-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

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

.promise-layout {
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  align-items: start;
}

.promise-layout .eyebrow {
  color: var(--blue);
}

.final-cta {
  padding: var(--section-y) 0;
  color: var(--white);
  background: var(--charcoal-2);
}

.final-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(280px, 0.88fr);
  gap: clamp(28px, 7vw, 88px);
  align-items: center;
}

.final-layout p:not(.eyebrow) {
  max-width: 720px;
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 18px;
  line-height: 1.62;
}

.final-actions {
  display: grid;
  gap: 12px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
}

.site-footer {
  padding: 28px 0;
  color: rgba(255, 255, 255, 0.78);
  background: var(--charcoal-2);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-inner a {
  color: #83bdff;
  font-weight: 850;
}

.sticky-contact {
  position: fixed;
  left: 50%;
  bottom: calc(14px + env(safe-area-inset-bottom));
  z-index: 40;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  width: min(560px, calc(100% - 24px));
  padding: 8px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(223, 227, 234, 0.95);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  transform: translateX(-50%);
  backdrop-filter: blur(16px);
  transition: opacity 180ms ease, transform 180ms ease;
}

html.has-js .sticky-contact {
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 12px);
}

html.has-js .sticky-contact.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.sticky-contact a,
.sticky-contact button {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 10px 12px;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 900;
  line-height: 1.12;
  text-align: center;
  white-space: normal;
}

.sticky-contact a {
  color: var(--white);
  background: var(--blue);
}

.sticky-contact button {
  color: var(--white);
  background: var(--jade);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(92px + env(safe-area-inset-bottom));
  z-index: 50;
  width: max-content;
  max-width: calc(100% - 32px);
  padding: 10px 14px;
  color: var(--white);
  background: var(--jade);
  border-radius: var(--radius);
  transform: translateX(-50%);
  box-shadow: var(--shadow-md);
}

@media (max-width: 1040px) {
  .site-header {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .top-nav {
    grid-column: 1 / -1;
    order: 3;
    justify-content: flex-start;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .top-nav::-webkit-scrollbar {
    display: none;
  }

  h1 {
    max-width: 700px;
    font-size: 60px;
  }

  h2 {
    font-size: 42px;
  }

  .hero-content {
    width: min(860px, calc(100% - 40px));
  }

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

  .promise-layout {
    grid-template-columns: 1fr;
    align-items: start;
  }
}

@media (max-width: 760px) {
  body {
    padding-bottom: calc(82px + env(safe-area-inset-bottom));
  }

  .site-header {
    gap: 9px;
    min-height: 62px;
    padding: 10px 14px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  .brand small {
    font-size: 11px;
  }

  .header-tools {
    gap: 6px;
  }

  .language-switch button {
    min-width: 32px;
  }

  .header-contact {
    min-height: 38px;
    padding: 8px 10px;
    font-size: 13px;
  }

  .top-nav {
    width: 100%;
    gap: 6px;
    padding-top: 2px;
    font-size: 13px;
  }

  .top-nav a {
    flex: 1 0 auto;
    justify-content: center;
    padding: 7px 10px;
  }

  .hero {
    min-height: auto;
  }

  .hero-media img {
    object-position: 58% center;
  }

  .hero-shade {
    background:
      linear-gradient(180deg, rgba(8, 12, 18, 0.72) 0%, rgba(8, 12, 18, 0.9) 100%),
      linear-gradient(90deg, rgba(8, 12, 18, 0.82), rgba(8, 12, 18, 0.36));
  }

  .hero-content {
    width: min(100% - 32px, 620px);
    padding: 52px 0 44px;
  }

  h1 {
    font-size: 44px;
    line-height: 1.1;
  }

  h2 {
    font-size: 32px;
    line-height: 1.12;
  }

  .hero-copy,
  .claim-layout p,
  .section-heading p,
  .visual-layout p,
  .final-layout p:not(.eyebrow) {
    font-size: 16px;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
    margin-top: 26px;
  }

  .hero-note {
    font-size: 14px;
  }

  .btn {
    width: 100%;
  }

  .claim-band,
  .section,
  .final-cta {
    padding: 58px 0;
  }

  .section-inner {
    width: min(100% - 32px, 620px);
  }

  .claim-layout,
  .visual-layout,
  .promise-layout,
  .final-layout {
    grid-template-columns: 1fr;
  }

  .contact-panel {
    justify-self: stretch;
    width: 100%;
    padding: 22px;
  }

  .contact-panel strong {
    font-size: 34px;
  }

  .proof-grid,
  .promise-grid {
    grid-template-columns: 1fr;
  }

  .proof-grid article,
  .promise-grid article {
    min-height: 0;
    padding: 20px;
  }

  .final-actions {
    padding: 12px;
  }
}

@media (max-width: 520px) {
  .site-header {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .brand small,
  .header-contact {
    display: none;
  }

  .header-tools {
    width: auto;
    justify-content: flex-end;
  }

  .top-nav {
    grid-column: 1 / -1;
    order: 2;
    font-size: 12px;
  }

  h1 {
    font-size: 38px;
  }

  h2 {
    font-size: 29px;
  }

  .hero-badges {
    gap: 6px;
  }

  .hero-badges span,
  .system-trust span {
    font-size: 12px;
  }

  .qr-card img {
    width: min(220px, 100%);
  }

  .sticky-contact {
    bottom: calc(8px + env(safe-area-inset-bottom));
    gap: 6px;
    width: min(560px, calc(100% - 16px));
    padding: 6px;
  }

  .sticky-contact a,
  .sticky-contact button {
    min-height: 44px;
    padding: 8px 10px;
    font-size: 14px;
  }

  .toast {
    bottom: calc(76px + env(safe-area-inset-bottom));
  }
}

@media (max-width: 360px) {
  .site-header {
    padding-inline: 10px;
  }

  .language-switch button {
    min-width: 30px;
    padding-inline: 6px;
  }

  .hero-content,
  .section-inner {
    width: min(100% - 24px, 620px);
  }

  h1 {
    font-size: 34px;
  }

  h2 {
    font-size: 27px;
  }

  .sticky-contact a,
  .sticky-contact button {
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}