:root {
  color-scheme: light;
  --navy-950: #07131f;
  --navy-900: #0a1c2b;
  --navy-800: #102b40;
  --blue-700: #0d4f78;
  --amber-500: #f4ad35;
  --amber-400: #ffc761;
  --paper: #f6f8f9;
  --white: #ffffff;
  --ink: #13202b;
  --muted: #65717b;
  --line: #dfe5e8;
  --shell: min(1180px, calc(100% - 40px));
  --shadow: 0 28px 70px rgba(7, 19, 31, 0.14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
svg { display: block; }
.shell { width: var(--shell); margin-inline: auto; }

.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 10;
  border-bottom: 1px solid rgba(255,255,255,.14);
}
.header-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: white; }
.brand-mark { width: 43px; height: 43px; display: grid; place-items: center; color: var(--amber-400); border: 1px solid rgba(255,255,255,.22); border-radius: 12px; background: rgba(255,255,255,.08); backdrop-filter: blur(12px); }
.brand-mark svg { width: 27px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.brand strong { display: block; font-size: 1.04rem; letter-spacing: .08em; line-height: 1.25; }
.brand small { display: block; margin-top: 2px; color: rgba(255,255,255,.62); font-size: .76rem; letter-spacing: .12em; }
.header-phone { display: flex; align-items: baseline; gap: 16px; text-decoration: none; color: white; }
.header-phone span { color: rgba(255,255,255,.68); font-size: .82rem; }
.header-phone strong { color: var(--amber-400); font-size: 1.08rem; letter-spacing: .04em; }

.hero { position: relative; min-height: 760px; display: grid; align-items: center; overflow: hidden; color: white; background: var(--navy-950); }
.hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; opacity: .78; }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(5,15,24,.97) 0%, rgba(5,15,24,.9) 35%, rgba(5,15,24,.32) 71%, rgba(5,15,24,.18) 100%), linear-gradient(0deg, rgba(5,15,24,.56), transparent 45%); }
.hero-content { position: relative; z-index: 1; padding-block: 154px 74px; }
.eyebrow, .kicker { margin: 0 0 18px; color: var(--blue-700); font-size: .78rem; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--amber-400); }
.eyebrow span { width: 30px; height: 2px; background: currentColor; }
.hero h1 { max-width: 720px; margin: 0; font-size: clamp(3rem, 6.4vw, 5.8rem); line-height: 1.03; letter-spacing: -.055em; font-weight: 850; }
.hero h1 span { display: block; white-space: nowrap; }
.hero-copy { max-width: 600px; margin: 30px 0 0; color: rgba(255,255,255,.78); font-size: clamp(1.05rem, 1.5vw, 1.25rem); }
.hero-actions { display: flex; align-items: center; gap: 14px; margin-top: 36px; flex-wrap: wrap; }
.button { min-height: 54px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 0 22px; border: 1px solid transparent; border-radius: 8px; text-decoration: none; font-weight: 760; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button svg { width: 20px; fill: currentColor; }
.button-primary { color: var(--navy-950); background: var(--amber-500); box-shadow: 0 10px 30px rgba(244,173,53,.22); }
.button-primary:hover { background: var(--amber-400); }
.button-primary strong { padding-left: 4px; font-size: 1.02rem; }
.button-ghost { color: white; border-color: rgba(255,255,255,.28); background: rgba(255,255,255,.06); backdrop-filter: blur(12px); }
.button-ghost:hover { border-color: rgba(255,255,255,.56); background: rgba(255,255,255,.1); }
.hero-facts { display: flex; gap: 0; margin: 54px 0 0; padding: 0; list-style: none; }
.hero-facts li { min-width: 160px; padding: 0 26px; border-left: 1px solid rgba(255,255,255,.18); }
.hero-facts li:first-child { padding-left: 0; border-left: 0; }
.hero-facts strong, .hero-facts span { display: block; }
.hero-facts strong { font-size: 1rem; }
.hero-facts span { margin-top: 2px; color: rgba(255,255,255,.54); font-size: .8rem; }

.quick-note { background: var(--white); border-bottom: 1px solid var(--line); }
.quick-note-inner { min-height: 86px; display: flex; align-items: center; gap: 16px; }
.quick-note svg { width: 24px; flex: 0 0 auto; fill: none; stroke: var(--amber-500); stroke-width: 1.8; stroke-linecap: round; }
.quick-note p { margin: 0; color: var(--muted); }
.quick-note strong { color: var(--ink); }

.section { padding: 112px 0; }
.section-heading { max-width: 640px; }
.section-heading h2, .coverage h2, .final-cta h2 { margin: 0; color: var(--navy-950); font-size: clamp(2rem, 4vw, 3.25rem); line-height: 1.16; letter-spacing: -.04em; }
.section-heading > p:last-child { margin: 20px 0 0; color: var(--muted); font-size: 1.04rem; }
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; margin-top: 48px; }
.service-card { position: relative; min-height: 370px; padding: 38px; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: var(--white); box-shadow: 0 14px 40px rgba(7,19,31,.05); }
.service-card-dark { color: white; border-color: transparent; background: var(--navy-900); box-shadow: var(--shadow); }
.service-number { position: absolute; top: 20px; right: 28px; color: rgba(10,28,43,.07); font-size: 7rem; line-height: 1; font-weight: 900; letter-spacing: -.08em; }
.service-card-dark .service-number { color: rgba(255,255,255,.06); }
.service-icon { width: 56px; height: 56px; display: grid; place-items: center; border-radius: 14px; color: var(--navy-900); background: #eaf0f3; }
.service-card-dark .service-icon { color: var(--navy-950); background: var(--amber-500); }
.service-icon svg { width: 28px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.service-card h3 { position: relative; margin: 38px 0 12px; font-size: 1.7rem; line-height: 1.2; }
.service-card p { position: relative; max-width: 470px; margin: 0; color: var(--muted); }
.service-card-dark p { color: rgba(255,255,255,.66); }
.service-tag { position: absolute; left: 38px; bottom: 34px; display: inline-flex; align-items: center; min-height: 30px; padding: 0 11px; border-radius: 99px; color: var(--blue-700); background: #edf5f8; font-size: .78rem; font-weight: 700; }
.service-card-dark .service-tag { color: var(--amber-400); background: rgba(244,173,53,.1); }

.process { background: white; }
.process-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; align-items: start; }
.process-heading { position: sticky; top: 36px; }
.text-link { display: inline-flex; align-items: center; gap: 14px; margin-top: 34px; color: var(--blue-700); font-weight: 800; text-decoration: none; border-bottom: 1px solid rgba(13,79,120,.28); }
.text-link span { font-size: 1.25rem; }
.steps { margin: 0; padding: 0; list-style: none; }
.steps li { display: grid; grid-template-columns: 64px 1fr; gap: 22px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.steps li:first-child { padding-top: 0; }
.steps > li > span { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 50%; color: var(--navy-900); background: var(--amber-500); font-size: .8rem; font-weight: 850; }
.steps h3 { margin: 0 0 4px; font-size: 1.2rem; }
.steps p { margin: 0; color: var(--muted); }

.coverage { position: relative; overflow: hidden; color: white; background: var(--navy-950); }
.coverage-grid { position: absolute; inset: 0; opacity: .18; background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px); background-size: 54px 54px; transform: perspective(600px) rotateX(55deg) scale(1.4); transform-origin: bottom; }
.coverage-inner { position: relative; display: grid; grid-template-columns: 1fr auto; gap: 60px; align-items: center; padding-block: 92px; }
.kicker-light { color: var(--amber-400); }
.coverage h2, .final-cta h2 { color: white; }
.coverage p { max-width: 620px; margin: 18px 0 0; color: rgba(255,255,255,.62); }
.coverage-phone { min-width: 330px; padding: 26px 30px; color: white; text-decoration: none; border: 1px solid rgba(255,255,255,.18); border-radius: 16px; background: rgba(255,255,255,.06); backdrop-filter: blur(12px); }
.coverage-phone span, .coverage-phone strong, .coverage-phone small { display: block; }
.coverage-phone span { color: rgba(255,255,255,.55); font-size: .8rem; }
.coverage-phone strong { margin: 5px 0; color: var(--amber-400); font-size: 1.65rem; letter-spacing: .04em; }
.coverage-phone small { color: rgba(255,255,255,.45); }

.faq-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 100px; align-items: start; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 25px 48px 25px 0; cursor: pointer; list-style: none; font-size: 1.08rem; font-weight: 760; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { position: absolute; right: 8px; top: 21px; color: var(--blue-700); font-size: 1.4rem; transition: transform .2s ease; }
.faq-list details[open] summary span { transform: rotate(45deg); }
.faq-list p { margin: -6px 0 25px; padding-right: 46px; color: var(--muted); }
.faq-list p a { color: var(--blue-700); font-weight: 800; }

.final-cta { padding: 0 0 90px; }
.final-cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 54px 58px; color: white; border-radius: 20px; background: linear-gradient(125deg, var(--navy-900), #153c56); box-shadow: var(--shadow); }
.final-cta h2 { max-width: 650px; font-size: clamp(1.8rem, 3.2vw, 2.65rem); }
.final-cta p { margin: 12px 0 0; color: rgba(255,255,255,.62); }
.button-large { min-width: 220px; min-height: 60px; flex: 0 0 auto; }

footer { padding: 38px 0 42px; color: rgba(255,255,255,.58); background: #050d14; }
.footer-inner { display: flex; align-items: flex-start; justify-content: space-between; gap: 32px; }
.footer-inner strong { color: white; }
.footer-inner p { margin: 5px 0 0; font-size: .85rem; }
.footer-meta { display: grid; justify-items: end; gap: 3px; font-size: .82rem; }
.footer-meta a { color: var(--amber-400); font-size: 1rem; font-weight: 800; text-decoration: none; }
.mobile-call { display: none; }

@media (max-width: 820px) {
  :root { --shell: min(100% - 30px, 680px); }
  body { padding-bottom: 76px; }
  .site-header { position: absolute; }
  .header-inner { min-height: 72px; }
  .header-phone { display: none; }
  .hero { min-height: auto; }
  .hero-image { opacity: .6; object-position: 59% center; }
  .hero-shade { background: linear-gradient(90deg, rgba(5,15,24,.96), rgba(5,15,24,.72)), linear-gradient(0deg, rgba(5,15,24,.7), transparent); }
  .hero-content { padding-block: 128px 50px; }
  .hero h1 { max-width: 100%; font-size: clamp(2.5rem, 9.5vw, 4rem); }
  .hero-copy { margin-top: 24px; }
  .hero-actions { margin-top: 28px; }
  .button-primary { width: 100%; }
  .button-ghost { display: none; }
  .hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 38px; }
  .hero-facts li { min-width: 0; padding: 0 12px; }
  .hero-facts li:first-child { padding-left: 0; }
  .hero-facts strong { font-size: .9rem; }
  .hero-facts span { font-size: .72rem; }
  .quick-note-inner { padding-block: 20px; align-items: flex-start; }
  .section { padding: 76px 0; }
  .service-grid, .process-layout, .faq-layout { grid-template-columns: 1fr; gap: 42px; }
  .service-card { min-height: 340px; padding: 30px; }
  .service-tag { left: 30px; bottom: 28px; }
  .process-heading { position: static; }
  .coverage-inner { grid-template-columns: 1fr; gap: 34px; padding-block: 70px; }
  .coverage-phone { min-width: 0; width: 100%; }
  .final-cta { padding-bottom: 64px; }
  .final-cta-inner { padding: 38px 28px; flex-direction: column; align-items: flex-start; }
  .footer-inner { flex-direction: column; }
  .footer-meta { justify-items: start; }
  .mobile-call { position: fixed; z-index: 30; left: 10px; right: 10px; bottom: 10px; min-height: 64px; display: flex; align-items: center; justify-content: space-between; padding: 8px 9px 8px 18px; color: white; text-decoration: none; border: 1px solid rgba(255,255,255,.14); border-radius: 16px; background: rgba(7,19,31,.96); box-shadow: 0 18px 40px rgba(0,0,0,.3); backdrop-filter: blur(16px); }
  .mobile-call span, .mobile-call small, .mobile-call strong { display: block; }
  .mobile-call small { color: rgba(255,255,255,.52); font-size: .69rem; }
  .mobile-call strong { color: var(--amber-400); letter-spacing: .04em; }
  .mobile-call b { min-width: 96px; min-height: 46px; display: grid; place-items: center; color: var(--navy-950); border-radius: 10px; background: var(--amber-500); font-size: .88rem; }
}

@media (max-width: 480px) {
  .brand-mark { width: 40px; height: 40px; }
  .brand strong { font-size: .96rem; }
  .hero h1 { font-size: clamp(2.25rem, 9.5vw, 2.75rem); }
  .hero-copy { font-size: 1rem; }
  .hero-facts { gap: 0; }
  .service-card { min-height: 360px; }
  .section-heading h2, .coverage h2 { font-size: 2rem; }
  .coverage-phone strong { font-size: 1.35rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}