:root {
  --green-950: #043c31;
  --green-900: #055846;
  --green-800: #076b56;
  --green-700: #087b63;
  --green-600: #0b8a70;
  --green-100: #dcefe9;
  --green-50: #eff8f5;
  --ink: #17211f;
  --muted: #65726f;
  --line: #dfe8e5;
  --surface: #ffffff;
  --canvas: #fbfdfc;
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --shadow-soft: 0 18px 44px rgba(6, 68, 55, .08);
  --container: 1200px;
  color-scheme: light;
  font-synthesis: none;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, summary { font: inherit; }
.container { width: min(calc(100% - 48px), var(--container)); margin-inline: auto; }
.skip-link {
  position: fixed; top: 12px; left: 12px; z-index: 1000; padding: 10px 14px;
  border-radius: 8px; background: #fff; color: var(--green-900); transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); outline: 3px solid #f0c75e; }

.site-header {
  position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.94);
  border-bottom: 1px solid rgba(3,62,50,.08); backdrop-filter: saturate(140%) blur(16px);
}
.nav-wrap { min-height: 80px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: max-content; }
.brand img { width: 48px; height: 48px; border-radius: 12px; }
.brand span { display: flex; flex-direction: column; line-height: 1.2; }
.brand strong { font-size: 18px; letter-spacing: -.02em; }
.brand small { margin-top: 5px; color: #87918e; font-size: 12px; }
.site-nav { justify-self: center; display: flex; align-items: center; gap: 42px; }
.site-nav a { position: relative; padding: 27px 0 24px; font-weight: 650; font-size: 15px; }
.site-nav a::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: 17px; height: 2px; background: var(--green-700); transition: .2s ease; }
.site-nav a:hover::after, .site-nav a[aria-current="true"]::after { left: 0; right: 0; }
.header-cta { display: inline-flex; align-items: center; gap: 8px; padding: 11px 17px; color: #fff; background: var(--green-700); border: 1px solid var(--green-700); border-radius: 9px; font-size: 14px; font-weight: 700; box-shadow: 0 8px 20px rgba(8,123,99,.18); }
.header-cta:hover { background: var(--green-900); }
.menu-toggle { display: none; border: 0; background: transparent; color: var(--ink); font-size: 25px; cursor: pointer; }

.hero { position: relative; overflow: clip; width: min(calc(100% - 32px), 1400px); margin: 16px auto 0; background: #078468; color: #fff; border-radius: var(--radius-md); }
.hero::before { content: ""; position: absolute; inset: 0; background: url("assets/images/hero-background.jpg") center / cover no-repeat; opacity: .22; pointer-events: none; }
.hero-pattern { display: none; }
.hero-grid { position: relative; min-height: 674px; display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 34px; padding-block: 62px; }
.hero-copy { position: relative; z-index: 2; padding-left: 2px; }
.eyebrow { display: inline-flex; align-items: center; gap: 7px; padding: 6px 11px; background: rgba(255,255,255,.13); border: 1px solid rgba(255,255,255,.18); border-radius: 999px; font-size: 13px; font-weight: 650; }
.hero h1 { margin: 26px 0 17px; max-width: 620px; font-size: clamp(42px, 4.25vw, 64px); line-height: 1.13; letter-spacing: -.045em; }
.hero h1 span { font-size: .74em; letter-spacing: -.035em; }
.hero-intro { max-width: 570px; margin: 0; color: #fff; font-size: 17px; line-height: 1.85; }
.hero-points { margin: 28px 0 30px; padding: 0; display: grid; gap: 12px; list-style: none; }
.hero-points li { display: grid; grid-template-columns: 25px 94px 1fr; align-items: center; gap: 8px; }
.hero-points li > i { width: 24px; height: 24px; display: inline-grid; place-items: center; color: var(--green-800); background: #fff; border-radius: 50%; font-size: 14px; }
.hero-points strong { font-size: 17px; }
.hero-points span { color: rgba(255,255,255,.92); font-size: 14px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.btn { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 12px 22px; border-radius: 9px; font-weight: 750; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--green-800); box-shadow: 0 12px 24px rgba(0,48,38,.16); }
.btn-light:hover { box-shadow: 0 16px 30px rgba(0,48,38,.22); }
.btn-outline { border: 1px solid rgba(255,255,255,.75); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,.1); }
.hero-note { margin: 18px 0 0; color: rgba(255,255,255,.92); font-size: 13px; }
.hero-visual { margin: 0 -12px 0 0; align-self: stretch; display: flex; align-items: center; justify-content: center; }
.hero-visual img { width: min(690px, 100%); height: auto; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 18px; mix-blend-mode: screen; filter: saturate(.9) contrast(1.04); box-shadow: 0 28px 70px rgba(0,50,39,.2); }

.safety { padding: 46px 0 22px; }
.safety-panel { display: grid; grid-template-columns: 1.35fr 1fr; align-items: center; gap: 42px; padding: 27px 31px; border: 1px solid #e4efeb; border-radius: 14px; background: var(--green-50); }
.safety-lead { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 19px; }
.shield-disc { width: 66px; height: 66px; display: grid; place-items: center; border-radius: 50%; background: #d7eee7; color: var(--green-700); font-size: 32px; }
.safety h2 { margin: 0 0 5px; font-size: 19px; }
.safety p { margin: 0; color: var(--muted); font-size: 14px; }
.trust-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 0; padding: 0; list-style: none; }
.trust-list li { text-align: center; }
.trust-list i { display: block; margin-bottom: 5px; color: var(--green-700); font-size: 25px; }
.trust-list strong { display: block; font-size: 14px; }
.trust-list span { display: block; color: #5e6b67; font-size: 11px; line-height: 1.45; }

.section { padding: 62px 0; }
.section-heading { text-align: center; margin-bottom: 40px; }
.section-heading h2 { margin: 0 0 5px; font-size: clamp(28px, 3vw, 36px); line-height: 1.25; letter-spacing: -.035em; }
.section-heading p { margin: 0; color: var(--muted); }
.steps { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 66px; width: min(960px, 100%); margin: 0 auto; padding: 0; list-style: none; counter-reset: steps; }
.steps::before { content: ""; position: absolute; top: 15px; left: 15.5%; right: 15.5%; height: 2px; background: #1c9a80; }
.steps li { position: relative; text-align: center; }
.step-number { position: relative; z-index: 2; width: 30px; height: 30px; display: inline-grid; place-items: center; margin-bottom: 18px; border-radius: 50%; color: #fff; background: var(--green-700); font-weight: 800; box-shadow: 0 0 0 6px var(--canvas); }
.step-icon { width: 62px; height: 62px; display: grid; place-items: center; margin: 0 auto 12px; border-radius: 50%; background: var(--green-50); color: var(--green-700); font-size: 30px; }
.steps h3 { margin: 0 0 8px; font-size: 17px; }
.steps p { max-width: 240px; margin: auto; color: var(--muted); font-size: 14px; }
.step-tip { width: min(760px, 100%); margin: 35px auto 0; padding: 10px 18px; text-align: center; color: #5e6e69; background: #f0f7f5; border-radius: 8px; font-size: 13px; }
.step-tip i { color: var(--green-700); margin-right: 5px; }

.features { padding-top: 42px; }
.feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 26px; }
.feature-item { display: grid; grid-template-columns: 210px 1fr; align-items: center; gap: 25px; padding: 14px 18px 14px 14px; border-right: 1px solid var(--line); }
.feature-item:nth-child(even) { border-right: 0; }
.feature-item figure { margin: 0; width: 210px; aspect-ratio: 4 / 3; overflow: hidden; border: 1px solid var(--line); border-radius: 10px; background: #f5faf8; }
.feature-item figure img { width: 100%; height: 100%; object-fit: cover; }
.feature-item h3 { margin: 0 0 7px; font-size: 18px; }
.feature-item p { margin: 0 0 8px; color: var(--muted); font-size: 14px; }
.feature-item ul { margin: 0; padding: 0; list-style: none; color: #52625e; font-size: 13px; }
.feature-item li::before { content: "\eb7b"; font-family: remixicon; margin-right: 7px; color: var(--green-700); }

.faq { padding-top: 70px; }
.faq-container { width: min(calc(100% - 48px), 1080px); }
.faq-list { border: 1px solid var(--line); border-radius: 12px; overflow: clip; background: #fff; box-shadow: 0 10px 30px rgba(5,64,51,.04); }
.faq-list details + details { border-top: 1px solid var(--line); }
.faq-list summary { min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 14px 19px; cursor: pointer; list-style: none; font-weight: 700; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary > span { display: inline-flex; align-items: center; gap: 12px; }
.faq-list summary span i { color: var(--green-700); font-size: 20px; }
.faq-chevron { color: #778480; transition: transform .2s ease; }
details[open] .faq-chevron { transform: rotate(180deg); }
.faq-answer { padding: 0 52px 20px; color: var(--muted); font-size: 14px; }

.site-footer { padding: 24px 0 36px; color: #5f6c68; text-align: center; font-size: 13px; }
.site-footer .container { border-radius: 10px; }
.disclaimer { width: min(850px,100%); margin: 0 auto 10px; padding: 13px 20px; background: var(--green-50); border: 1px solid #e2eee9; border-radius: 9px; }
.disclaimer i, .disclaimer strong { color: var(--green-700); }
.site-footer p:last-child { margin: 0; }
.back-to-top { position: fixed; right: 22px; bottom: 22px; z-index: 50; width: 44px; height: 44px; display: grid; place-items: center; border: 0; border-radius: 50%; color: #fff; background: var(--green-700); box-shadow: 0 10px 24px rgba(4,76,61,.2); cursor: pointer; opacity: 0; visibility: hidden; transform: translateY(12px); transition: .2s ease; }
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.noscript { margin: 0; padding: 8px 12px; text-align: center; background: #fff3cc; color: #5c4c11; }

:focus-visible { outline: 3px solid #f2c75d; outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *,*::before,*::after { transition-duration: .01ms !important; animation-duration: .01ms !important; } }

@media (max-width: 1040px) {
  .nav-wrap { grid-template-columns: auto auto 1fr; }
  .site-nav { position: fixed; inset: 80px 0 auto; width: 100%; justify-self: stretch; display: grid; gap: 0; background: #fff; box-shadow: 0 14px 30px rgba(0,0,0,.1); transform: translateY(-130%); opacity: 0; visibility: hidden; transition: .25s ease; }
  .site-nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .site-nav a { padding: 16px 24px; border-bottom: 1px solid var(--line); }
  .site-nav a::after { display: none; }
  .menu-toggle { display: block; justify-self: end; grid-column: 3; grid-row: 1; }
  .header-cta { display: none; }
  .hero-grid { grid-template-columns: 1fr 1fr; }
  .hero-visual { margin-right: -26px; }
  .safety-panel { grid-template-columns: 1fr; gap: 24px; }
  .feature-item { grid-template-columns: 170px 1fr; }
  .feature-item figure { width: 170px; }
}

@media (max-width: 760px) {
  .container { width: min(calc(100% - 32px), var(--container)); }
  .site-header { position: sticky; }
  .nav-wrap { min-height: 68px; gap: 10px; }
  .brand img { width: 42px; height: 42px; border-radius: 10px; }
  .brand strong { font-size: 16px; }
  .brand small { font-size: 11px; }
  .site-nav { top: 68px; }
  .hero { width: calc(100% - 16px); margin-top: 8px; border-radius: 14px; }
  .hero-grid { min-height: auto; grid-template-columns: 1fr; padding: 38px 8px 30px; gap: 24px; }
  .hero-copy { padding: 0; }
  .hero h1 { margin-top: 20px; font-size: clamp(40px, 12vw, 54px); }
  .hero h1 span { font-size: .65em; line-height: 1.35; }
  .hero-intro { font-size: 15px; }
  .hero-points li { grid-template-columns: 24px 86px 1fr; gap: 6px; }
  .hero-points strong { font-size: 15px; }
  .hero-points span { font-size: 12px; }
  .hero-actions { display: grid; }
  .btn { width: 100%; }
  .hero-visual { margin: 0 -7px; }
  .hero-visual img { width: 100%; }
  .safety { padding-top: 28px; }
  .safety-panel { padding: 22px 18px; }
  .safety-lead { align-items: start; }
  .shield-disc { width: 50px; height: 50px; font-size: 25px; }
  .trust-list { gap: 10px; }
  .section { padding: 49px 0; }
  .section-heading { margin-bottom: 30px; }
  .steps { grid-template-columns: 1fr; gap: 30px; }
  .steps::before { top: 15px; bottom: 15px; left: 15px; right: auto; width: 2px; height: auto; }
  .steps li { display: grid; grid-template-columns: 34px 56px 1fr; grid-template-rows: auto auto; align-items: center; column-gap: 13px; text-align: left; }
  .step-number { grid-row: 1 / 3; margin: 0; align-self: start; }
  .step-icon { grid-row: 1 / 3; width: 54px; height: 54px; margin: 0; font-size: 26px; }
  .steps h3 { margin: 0; }
  .steps p { max-width: none; margin: 3px 0 0; }
  .feature-grid { grid-template-columns: 1fr; gap: 12px; }
  .feature-item, .feature-item:nth-child(even) { grid-template-columns: 150px 1fr; gap: 18px; padding: 14px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .feature-item figure { width: 150px; }
  .faq-container { width: min(calc(100% - 32px), 1080px); }
  .faq-list summary { min-height: 60px; padding: 13px 14px; font-size: 14px; }
  .faq-answer { padding: 0 46px 18px; }
}

@media (max-width: 480px) {
  .brand small { display: none; }
  .hero h1 { font-size: 38px; }
  .hero h1 span { font-size: .64em; }
  .hero-points li { grid-template-columns: 24px 1fr; }
  .hero-points li span { grid-column: 2; }
  .trust-list { grid-template-columns: 1fr; gap: 14px; }
  .trust-list li { display: grid; grid-template-columns: 28px auto; justify-content: center; align-items: center; column-gap: 8px; }
  .trust-list i { grid-row: 1 / 3; margin: 0; }
  .trust-list strong, .trust-list span { text-align: left; }
  .feature-item, .feature-item:nth-child(even) { grid-template-columns: 1fr; }
  .feature-item figure { width: 100%; max-height: 220px; }
  .faq-list summary > span { align-items: flex-start; }
  .faq-answer { padding-left: 46px; padding-right: 20px; }
}