:root {
  --bg: #0b1020;
  --bg-alt: #10172f;
  --panel: rgba(17, 24, 48, 0.82);
  --panel-strong: rgba(21, 30, 59, 0.96);
  --card: rgba(255, 248, 240, 0.06);
  --line: rgba(255, 255, 255, 0.12);
  --text: #f5f6fb;
  --muted: rgba(245, 246, 251, 0.74);
  --brand: #ff6b6b;
  --brand-2: #ff9f43;
  --brand-3: #8e6cff;
  --brand-4: #ffef8a;
  --ok: #3fd19a;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.35);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --container: 1180px;
  --font-body: "Trebuchet MS", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-heading: "Avenir Next", "Trebuchet MS", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--font-body);
  background:
    radial-gradient(circle at 15% 20%, rgba(142, 108, 255, 0.26), transparent 24%),
    radial-gradient(circle at 82% 8%, rgba(255, 159, 67, 0.22), transparent 22%),
    radial-gradient(circle at 78% 76%, rgba(255, 107, 107, 0.18), transparent 24%),
    linear-gradient(180deg, #070a15 0%, #0b1020 40%, #10182f 100%);
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

body::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.56), transparent 90%);
}

body::after {
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.08), transparent 35%),
    radial-gradient(circle at 0% 100%, rgba(255, 159, 67, 0.12), transparent 24%);
  opacity: 0.8;
}

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

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

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

.page {
  position: relative;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

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

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(18px);
  background: linear-gradient(180deg, rgba(6, 10, 22, 0.94), rgba(6, 10, 22, 0.72));
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 82px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand img {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.32);
}

.brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, var(--brand), var(--brand-3));
  color: #fff;
  font-weight: 800;
  letter-spacing: 0.04em;
  box-shadow: 0 16px 30px rgba(142, 108, 255, 0.34);
}

.brand-text {
  display: grid;
  gap: 3px;
}

.brand-text strong {
  font-family: var(--font-heading);
  font-size: 1.02rem;
  letter-spacing: 0.02em;
}

.brand-text span {
  color: var(--muted);
  font-size: 0.84rem;
}

.nav-wrap {
  display: flex;
  align-items: center;
  gap: 18px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-nav a {
  padding: 11px 14px;
  border-radius: 999px;
  color: rgba(245, 246, 251, 0.88);
  font-weight: 600;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.site-nav a:hover,
.site-nav a.active {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transform: translateY(-1px);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  color: #101218;
  font-weight: 800;
  background: linear-gradient(135deg, var(--brand-4), #ffd16f);
  box-shadow: 0 16px 32px rgba(255, 239, 138, 0.22);
}

.nav-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.hero,
.section {
  padding: 32px 0;
}

.hero {
  padding-top: 30px;
}

.hero-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: stretch;
}

.hero-panel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: linear-gradient(160deg, rgba(19, 25, 51, 0.96), rgba(27, 38, 72, 0.82));
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 42px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: #ffe9d1;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
}

.eyebrow::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--brand);
  box-shadow: 0 0 0 6px rgba(255, 107, 107, 0.14);
}

.hero h1,
.section h2,
.article h1 {
  margin: 18px 0 0;
  font-family: var(--font-heading);
  line-height: 1.08;
  letter-spacing: 0.01em;
}

.hero h1 {
  font-size: clamp(2.2rem, 4vw, 4.4rem);
  max-width: 12ch;
}

.hero-lead {
  margin: 18px 0 0;
  color: rgba(245, 246, 251, 0.8);
  font-size: 1.05rem;
  line-height: 1.85;
  max-width: 64ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 800;
  letter-spacing: 0.01em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.btn-primary {
  color: #101218;
  background: linear-gradient(135deg, var(--brand-4), #ffd35f 42%, var(--brand-2));
  box-shadow: 0 18px 30px rgba(255, 159, 67, 0.25);
}

.btn-secondary {
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}

.stat {
  padding: 16px 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.stat strong {
  display: block;
  font-size: 1.35rem;
  font-family: var(--font-heading);
}

.stat span {
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-visual {
  display: grid;
  gap: 16px;
}

.visual-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  box-shadow: var(--shadow);
  min-height: 224px;
}

.visual-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 20%, rgba(255, 255, 255, 0.16), transparent 22%),
    radial-gradient(circle at 82% 8%, rgba(255, 159, 67, 0.18), transparent 20%),
    radial-gradient(circle at 74% 78%, rgba(142, 108, 255, 0.2), transparent 24%);
}

.visual-card-inner {
  position: relative;
  height: 100%;
  padding: 20px;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.84rem;
  font-weight: 700;
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.badge.brand {
  background: rgba(255, 107, 107, 0.18);
  border-color: rgba(255, 107, 107, 0.28);
}

.badge.soft {
  background: rgba(142, 108, 255, 0.18);
  border-color: rgba(142, 108, 255, 0.24);
}

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

.phone {
  overflow: hidden;
  border-radius: 30px;
  background: linear-gradient(180deg, #0d1327, #111b36);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.22);
}

.phone img {
  width: 100%;
  height: auto;
}

.section-title {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.section h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.7rem);
}

.section-desc {
  max-width: 64ch;
  color: var(--muted);
  line-height: 1.8;
  margin: 12px 0 0;
}

.grid-3 {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.03));
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.18);
}

.card.pad {
  padding: 22px;
}

.card h3,
.card h4 {
  margin: 0;
  font-family: var(--font-heading);
}

.card h3 {
  font-size: 1.16rem;
}

.card p {
  color: var(--muted);
  line-height: 1.78;
}

.card-icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  margin-bottom: 14px;
  color: #fff;
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.9), rgba(142, 108, 255, 0.9));
  box-shadow: 0 16px 30px rgba(142, 108, 255, 0.22);
}

.muted-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-weight: 700;
  color: #ffe8b5;
}

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

.shot {
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow);
}

.shot figcaption {
  padding: 14px 16px 16px;
  color: rgba(245, 246, 251, 0.78);
  line-height: 1.6;
  font-size: 0.94rem;
}

.shot img {
  width: 100%;
  aspect-ratio: 3 / 4.6;
  object-fit: cover;
  background: #0a0f1c;
}

.strip {
  display: grid;
  gap: 18px;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  padding: 24px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.16), rgba(142, 108, 255, 0.16));
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.strip h3 {
  margin: 0;
  font-size: 1.4rem;
  font-family: var(--font-heading);
}

.strip p {
  margin: 10px 0 0;
  color: rgba(245, 246, 251, 0.8);
  line-height: 1.8;
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #fff;
  font-weight: 700;
}

.article {
  padding: 36px 0 48px;
}

.article-shell {
  padding: 30px;
  border-radius: 32px;
  background: linear-gradient(180deg, rgba(17, 24, 48, 0.95), rgba(14, 20, 39, 0.94));
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow);
}

.article h1 {
  font-size: clamp(2rem, 3.3vw, 3.5rem);
}

.article-lead {
  margin: 16px 0 0;
  color: rgba(245, 246, 251, 0.82);
  line-height: 1.88;
  max-width: 72ch;
}

.article-content {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.article-content h2,
.article-content h3 {
  margin: 0;
  font-family: var(--font-heading);
}

.article-content h2 {
  font-size: 1.52rem;
}

.article-content h3 {
  font-size: 1.1rem;
}

.article-content p,
.article-content li,
.article-content dd {
  color: var(--muted);
  line-height: 1.9;
}

.two-col {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr 1fr;
}

.check-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
}

.check-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--brand-4);
  font-size: 1.4rem;
  line-height: 1.3;
}

.step-list {
  display: grid;
  gap: 16px;
  counter-reset: step;
}

.step {
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.step h3::before {
  counter-increment: step;
  content: counter(step);
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  margin-right: 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand), var(--brand-3));
  color: #fff;
  font-size: 0.9rem;
}

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

.feature-box {
  padding: 22px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  padding: 16px 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  font-weight: 800;
  color: #fff;
}

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

.faq-item summary::after {
  content: "+";
  float: right;
  color: var(--brand-4);
}

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

.faq-item p {
  margin: 12px 0 0;
}

.review-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.review {
  padding: 20px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.04));
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.review .name {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
  font-weight: 800;
}

.stars {
  color: #ffd86d;
  letter-spacing: 2px;
}

.callout {
  margin-top: 20px;
  padding: 20px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.footer {
  padding: 28px 0 40px;
}

.footer-inner {
  display: grid;
  gap: 18px;
  padding: 24px;
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(17, 24, 48, 0.96), rgba(11, 16, 32, 0.95));
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1.1fr 0.9fr;
}

.footer p,
.footer li {
  color: var(--muted);
  line-height: 1.8;
}

.footer-links {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.footer-links a {
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.copyright {
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(245, 246, 251, 0.58);
  font-size: 0.92rem;
}

.anchor-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.anchor-links a {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(245, 246, 251, 0.84);
  font-weight: 700;
}

@media (max-width: 1120px) {
  .hero-grid,
  .strip,
  .footer-grid,
  .two-col {
    grid-template-columns: 1fr;
  }

  .grid-4,
  .shot-grid,
  .review-grid,
  .feature-grid,
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 780px) {
  .container {
    width: min(100% - 22px, var(--container));
  }

  .header-inner {
    min-height: 72px;
  }

  .nav-wrap {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(8, 12, 24, 0.98);
    backdrop-filter: blur(16px);
  }

  .site-header.nav-open .nav-wrap {
    display: flex;
  }

  .site-nav {
    flex-direction: column;
    align-items: stretch;
  }

  .site-nav a,
  .header-cta {
    width: 100%;
    justify-content: center;
  }

  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .hero-copy {
    padding: 26px 20px 22px;
  }

  .hero-meta,
  .grid-4,
  .shot-grid,
  .review-grid,
  .feature-grid,
  .grid-3,
  .phone-grid,
  .footer-links {
    grid-template-columns: 1fr;
  }

  .article-shell {
    padding: 22px 18px;
  }

  .section,
  .hero {
    padding: 22px 0;
  }
}