:root {
  --bg: #f5faf5;
  --paper: #ffffff;
  --ink: #102019;
  --ink-soft: #33443d;
  --muted: #6f7f76;
  --line: #dce8de;
  --green: #20d876;
  --green-dark: #096b43;
  --lime: #bafc7e;
  --cyan: #78d9e9;
  --coral: #ff8b7e;
  --radius-sm: 12px;
  --radius-md: 22px;
  --radius-lg: 34px;
  --shadow: 0 26px 70px rgba(20, 52, 35, 0.12);
  --container: min(1160px, calc(100vw - 40px));
  color: var(--ink);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 82% 6%, rgba(186, 252, 126, 0.22), transparent 24rem),
    radial-gradient(circle at 8% 30%, rgba(120, 217, 233, 0.12), transparent 24rem),
    var(--bg);
}

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

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

button,
summary {
  font: inherit;
}

section[id] {
  scroll-margin-top: 92px;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 14px;
  color: #fff;
  background: var(--ink);
  border-radius: 8px;
  transform: translateY(-150%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 76px;
  padding: 10px max(24px, calc((100vw - 1160px) / 2));
  background: rgba(245, 250, 245, 0.82);
  border-bottom: 1px solid rgba(220, 232, 222, 0.78);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
}

.brand img {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  box-shadow: 0 10px 25px rgba(16, 32, 25, 0.12);
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 17px;
  line-height: 1.15;
}

.brand small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 700;
}

.site-header nav a {
  padding: 11px 13px;
  color: var(--ink-soft);
  border-radius: 10px;
}

.site-header nav a:hover,
.site-header nav a:focus-visible {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.86);
  outline: none;
}

.site-header nav .nav-home {
  margin-left: 6px;
  color: #fff;
  background: var(--ink);
}

.site-header nav .nav-home:hover,
.site-header nav .nav-home:focus-visible {
  color: #fff;
  background: #07110d;
}

.hero {
  width: var(--container);
  min-height: min(760px, calc(100svh - 76px));
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(390px, 0.82fr);
  align-items: center;
  gap: 70px;
  margin: 0 auto;
  padding: 72px 0 82px;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.eyebrow,
.section-kicker {
  margin: 0;
  color: var(--green-dark);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(9, 107, 67, 0.14);
  border-radius: 999px;
}

.eyebrow span {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(32, 216, 118, 0.13);
}

.hero h1 {
  max-width: 720px;
  margin: 24px 0 0;
  font-size: clamp(50px, 6.5vw, 82px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.hero-lead {
  max-width: 610px;
  margin: 28px 0 0;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.85;
}

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

.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 800;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

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

.button-primary {
  color: #fff;
  background: var(--ink);
  box-shadow: 0 16px 32px rgba(16, 32, 25, 0.17);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: #07110d;
  outline: none;
}

.button-secondary {
  background: rgba(255, 255, 255, 0.78);
  border-color: var(--line);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: #fff;
  border-color: #c3d7c7;
  outline: none;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.hero-tags li {
  padding: 7px 10px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(220, 232, 222, 0.9);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.hero-visual {
  position: relative;
  min-height: 590px;
  display: flex;
  align-items: center;
  justify-content: center;
  isolation: isolate;
}

.hero-visual::before {
  content: "";
  position: absolute;
  z-index: -2;
  width: 430px;
  height: 430px;
  background: linear-gradient(145deg, rgba(186, 252, 126, 0.9), rgba(120, 217, 233, 0.58));
  border-radius: 42% 58% 56% 44% / 52% 38% 62% 48%;
  transform: rotate(-8deg);
  filter: saturate(0.9);
}

.hero-visual::after {
  content: "";
  position: absolute;
  z-index: -1;
  width: 360px;
  height: 500px;
  background: rgba(255, 255, 255, 0.37);
  border: 1px solid rgba(255, 255, 255, 0.76);
  border-radius: 60px;
  transform: rotate(7deg);
  backdrop-filter: blur(12px);
}

.phone-frame {
  position: relative;
  width: 266px;
  padding: 10px;
  background: #101b16;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 39px;
  box-shadow: 0 34px 90px rgba(12, 40, 24, 0.25);
  transform: rotate(-4deg);
}

.phone-frame img {
  width: 100%;
  aspect-ratio: 1242 / 2688;
  object-fit: cover;
  border-radius: 30px;
}

.phone-speaker {
  position: absolute;
  top: 18px;
  left: 50%;
  z-index: 2;
  width: 76px;
  height: 20px;
  background: #101b16;
  border-radius: 999px;
  transform: translateX(-50%);
}

.support-card {
  position: absolute;
  z-index: 3;
  min-width: 255px;
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 15px 17px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.96);
  border-radius: 17px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.support-card-top {
  top: 76px;
  left: -28px;
}

.support-card-bottom {
  right: -26px;
  bottom: 80px;
}

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

.support-card strong {
  font-size: 13px;
}

.support-card small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
}

.support-index {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--ink);
  border-radius: 10px;
  font-size: 11px;
  font-weight: 850;
}

.status-dot {
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
  background: var(--green);
  border: 3px solid #fff;
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(32, 216, 118, 0.18);
}

.official-strip {
  width: var(--container);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 0 auto;
  padding: 18px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 14px 36px rgba(20, 52, 35, 0.06);
}

.official-strip > div {
  display: flex;
  align-items: center;
  gap: 12px;
}

.official-strip p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.official-strip strong {
  color: var(--ink);
}

.official-mark {
  padding: 6px 9px;
  color: #fff;
  background: var(--green-dark);
  border-radius: 7px;
  font-size: 11px;
  font-weight: 850;
}

.section {
  width: var(--container);
  margin: 0 auto;
  padding: 120px 0 0;
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 42px;
  text-align: center;
}

.section-heading-left {
  max-width: 720px;
  margin-left: 0;
  text-align: left;
}

.section-heading h2,
.contact-intro h2,
.legal-section h2 {
  margin: 11px 0 0;
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.section-heading > p:last-child,
.contact-intro > p:last-child {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.help-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.help-card {
  position: relative;
  min-height: 220px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: 22px;
  padding: 28px;
  overflow: hidden;
  border: 1px solid rgba(16, 32, 25, 0.08);
  border-radius: var(--radius-md);
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.help-card::after {
  content: "";
  position: absolute;
  right: -50px;
  bottom: -80px;
  width: 190px;
  height: 190px;
  background: rgba(255, 255, 255, 0.38);
  border-radius: 50%;
}

.help-card:hover,
.help-card:focus-visible {
  z-index: 2;
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  outline: none;
}

.help-card-green {
  background: linear-gradient(140deg, #bafc7e, #ddffc3);
}

.help-card-cyan {
  background: linear-gradient(140deg, #a7eaf2, #ddf8fb);
}

.help-card-lime {
  background: linear-gradient(140deg, #d9f7a8, #f0ffd7);
}

.help-card-coral {
  background: linear-gradient(140deg, #ffb2a8, #ffe0dc);
}

.card-number {
  position: relative;
  z-index: 1;
  color: rgba(16, 32, 25, 0.58);
  font-size: 12px;
  font-weight: 850;
}

.help-card > div {
  position: relative;
  z-index: 1;
  align-self: end;
  margin-top: 70px;
}

.help-card h3 {
  margin: 0;
  font-size: 24px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.help-card p {
  max-width: 330px;
  margin: 10px 0 0;
  color: rgba(16, 32, 25, 0.68);
  font-size: 14px;
  line-height: 1.7;
}

.card-arrow {
  position: relative;
  z-index: 1;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.56);
  border-radius: 50%;
  font-size: 18px;
  font-weight: 800;
}

.faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  align-items: start;
  gap: 28px;
}

.faq-list {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: 0 18px 46px rgba(20, 52, 35, 0.07);
}

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

.faq-list details:first-child {
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.faq-list details:last-child {
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.faq-list summary {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 24px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 800;
}

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

.faq-list summary:hover,
.faq-list summary:focus-visible {
  background: #f9fcf9;
  outline: none;
}

.faq-list summary i {
  position: relative;
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  background: #eff6f0;
  border-radius: 50%;
}

.faq-list summary i::before,
.faq-list summary i::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 1.5px;
  background: var(--ink);
  transform: translate(-50%, -50%);
  transition: transform 180ms ease;
}

.faq-list summary i::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-list details[open] summary i::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.answer {
  padding: 0 24px 24px;
}

.answer p {
  margin: 0;
  padding: 18px 20px;
  color: var(--ink-soft);
  background: #f5faf5;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.85;
}

.faq-aside {
  position: sticky;
  top: 104px;
  padding: 28px;
  color: #fff;
  background:
    radial-gradient(circle at 80% 10%, rgba(186, 252, 126, 0.22), transparent 40%),
    var(--ink);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
}

.faq-aside img {
  width: 74px;
  height: 74px;
  border-radius: 20px;
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.2);
}

.aside-label {
  margin: 44px 0 0;
  color: var(--lime);
  font-size: 12px;
  font-weight: 850;
}

.faq-aside h3 {
  margin: 8px 0 0;
  font-size: 27px;
  line-height: 1.2;
}

.faq-aside > p:not(.aside-label) {
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 1.75;
}

.faq-aside a {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 28px;
  padding: 0 16px;
  color: var(--ink);
  background: var(--lime);
  border-radius: 11px;
  font-size: 14px;
  font-weight: 850;
}

.faq-aside a:hover,
.faq-aside a:focus-visible {
  background: #d4ffac;
  outline: none;
}

.contact-section {
  width: var(--container);
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1fr);
  gap: 76px;
  margin: 120px auto 0;
  padding: 56px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 70px rgba(20, 52, 35, 0.08);
}

.contact-intro h2 {
  font-size: clamp(34px, 3.5vw, 48px);
}

.contact-grid {
  display: grid;
  gap: 10px;
}

.contact-item {
  display: block;
  padding: 20px;
  background: #f6faf6;
  border: 1px solid #e6eee7;
  border-radius: 15px;
  transition: background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

a.contact-item:hover,
a.contact-item:focus-visible {
  background: #eef8f0;
  border-color: #cbe1cf;
  transform: translateX(3px);
  outline: none;
}

.contact-email {
  background: #e9fbe7;
  border-color: #cbecc8;
}

.contact-item span,
.contact-item strong,
.contact-item small {
  display: block;
}

.contact-item span {
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.contact-item strong {
  margin-top: 7px;
  font-size: 17px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.contact-item small {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.legal-section {
  width: var(--container);
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 52px;
  margin: 120px auto 0;
  padding: 54px 0 110px;
  border-top: 1px solid var(--line);
}

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

.legal-links {
  display: grid;
  gap: 10px;
}

.legal-links a {
  position: relative;
  display: block;
  padding: 20px 54px 20px 20px;
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.legal-links a::after {
  content: "→";
  position: absolute;
  top: 50%;
  right: 20px;
  font-size: 20px;
  transform: translateY(-50%);
}

.legal-links a:hover,
.legal-links a:focus-visible {
  background: #fff;
  border-color: #c8d9ca;
  outline: none;
}

.legal-links span,
.legal-links small {
  display: block;
}

.legal-links span {
  font-size: 16px;
  font-weight: 850;
}

.legal-links small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 28px max(24px, calc((100vw - 1160px) / 2));
  color: rgba(255, 255, 255, 0.82);
  background: var(--ink);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand img {
  width: 40px;
  height: 40px;
}

.footer-brand strong,
.footer-brand small {
  display: block;
}

.footer-brand strong {
  color: #fff;
  font-size: 14px;
}

.footer-brand small {
  margin-top: 3px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 11px;
}

.footer-meta {
  text-align: right;
  font-size: 11px;
}

.footer-meta p {
  margin: 0 0 4px;
}

.footer-meta a {
  color: rgba(255, 255, 255, 0.58);
}

.footer-meta a:hover,
.footer-meta a:focus-visible {
  color: #fff;
  outline: none;
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: minmax(0, 1fr) 350px;
    gap: 36px;
  }

  .hero-visual {
    transform: scale(0.88);
  }

  .faq-layout {
    grid-template-columns: minmax(0, 1fr) 280px;
  }

  .contact-section {
    gap: 40px;
    padding: 42px;
  }
}

@media (max-width: 800px) {
  .site-header nav a:not(.nav-home) {
    display: none;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 20px;
    padding-top: 64px;
  }

  .hero h1 {
    font-size: clamp(50px, 12vw, 72px);
  }

  .hero-visual {
    min-height: 570px;
    transform: none;
  }

  .official-strip {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .faq-layout,
  .contact-section,
  .legal-section {
    grid-template-columns: 1fr;
  }

  .faq-aside {
    position: static;
  }

  .contact-section {
    gap: 34px;
  }

  .legal-section {
    gap: 30px;
  }
}

@media (max-width: 620px) {
  :root {
    --container: min(100% - 28px, 1160px);
  }

  .site-header {
    min-height: 68px;
    padding: 8px 14px;
  }

  .brand img {
    width: 42px;
    height: 42px;
  }

  .site-header nav .nav-home {
    padding: 10px 11px;
    font-size: 12px;
  }

  .hero {
    padding: 48px 0 56px;
  }

  .hero h1 {
    margin-top: 20px;
    font-size: clamp(44px, 14vw, 64px);
    letter-spacing: -0.06em;
  }

  .hero-lead {
    margin-top: 22px;
    font-size: 16px;
    line-height: 1.75;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
    margin-top: 28px;
  }

  .button {
    width: 100%;
  }

  .hero-visual {
    min-height: 500px;
    margin-top: 10px;
  }

  .hero-visual::before {
    width: 340px;
    height: 340px;
  }

  .hero-visual::after {
    width: 285px;
    height: 410px;
  }

  .phone-frame {
    width: 220px;
    border-radius: 33px;
  }

  .phone-frame img {
    border-radius: 25px;
  }

  .support-card {
    min-width: 220px;
    padding: 13px 14px;
  }

  .support-card-top {
    top: 62px;
    left: -4px;
  }

  .support-card-bottom {
    right: -4px;
    bottom: 54px;
  }

  .official-strip {
    padding: 16px;
  }

  .official-strip > div {
    align-items: flex-start;
  }

  .official-strip p {
    line-height: 1.65;
  }

  .section {
    padding-top: 88px;
  }

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

  .section-heading h2,
  .contact-intro h2 {
    font-size: 36px;
  }

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

  .help-card {
    min-height: 185px;
    padding: 22px;
  }

  .help-card > div {
    margin-top: 45px;
  }

  .faq-list summary {
    min-height: 72px;
    padding: 18px;
    font-size: 15px;
  }

  .answer {
    padding: 0 14px 16px;
  }

  .answer p {
    padding: 16px;
  }

  .contact-section {
    margin-top: 88px;
    padding: 28px 20px;
    border-radius: 24px;
  }

  .contact-item {
    padding: 18px;
  }

  .legal-section {
    margin-top: 88px;
    padding-bottom: 80px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    padding: 26px 20px;
  }

  .footer-meta {
    text-align: left;
  }
}

@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;
  }
}