:root {
  color: #153b30;
  background: #fff;
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { min-width: 320px; margin: 0; }
body.modal-open { overflow: hidden; }
button, a { font: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
button:focus-visible, a:focus-visible { outline: 3px solid #4d92d6; outline-offset: 3px; }
[hidden] { display: none !important; }

.official-site { min-height: 100vh; overflow: hidden; background: #fff; }
.official-header { position: relative; z-index: 4; border-bottom: 1px solid #e3ebe5; background: #fff; }
.official-header-inner, .official-hero-inner, .official-footer-inner { width: min(1280px, calc(100% - 72px)); margin: 0 auto; }
.official-header-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.official-brand { flex-shrink: 0; padding: 0; border: 0; background: transparent; color: #153b30; font-size: 28px; font-weight: 800; letter-spacing: -0.05em; }
.official-nav, .official-footer nav { display: flex; align-items: center; justify-content: flex-end; gap: 28px; color: #466156; font-size: 15px; }
.official-nav a, .official-footer nav a { padding: 10px 0; transition: color 160ms ease; }
.official-nav a:hover, .official-footer nav a:hover { color: #176048; }

.official-hero { position: relative; min-height: 620px; overflow: hidden; background: #edf4f0; }
.official-hero-inner { position: relative; z-index: 1; min-height: 620px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(420px, 560px); align-items: start; gap: 56px; padding: 42px 0 62px; }
.hero-copy { max-width: 600px; }
.hero-copy h1 { margin: 0 0 24px; color: #153b30; font-size: clamp(44px, 4.2vw, 68px); line-height: 1.08; letter-spacing: -.065em; }
.hero-copy h1 span { white-space: nowrap; }
.hero-description { margin: 0; color: #3f5b4f; font-size: 24px; line-height: 1.7; }
.primary-cta { display: inline-flex; align-items: center; gap: 18px; min-width: 242px; min-height: 62px; margin-top: 38px; padding: 0 26px; border: 0; border-radius: 11px; background: #176048; color: #fff; font-size: 19px; font-weight: 800; box-shadow: 0 12px 25px #17604824; }
.primary-cta img { width: 24px; height: 24px; filter: brightness(0) invert(1); }
.hero-note { margin: 18px 0 0; color: #5f776b; font-size: 14px; }
.hero-note span { margin: 0 8px; color: #9caf9f; }

.toolbox-panel { position: relative; border: 1px solid #d9e6dc; border-radius: 18px; background: #fff; box-shadow: 0 22px 42px #2a554018; }
.tool-row { display: grid; grid-template-columns: 74px minmax(0, 1fr) 22px; align-items: center; gap: 22px; width: 100%; min-height: 172px; padding: 28px 32px; border: 0; border-bottom: 1px solid #e2ebe4; background: transparent; text-align: left; color: #153b30; transition: background 160ms ease; }
.tool-row:first-child { border-radius: 18px 18px 0 0; }
.tool-row:last-child { border-bottom: 0; border-radius: 0 0 18px 18px; }
.tool-row:hover { background: #f6faf7; }
.tool-icon { display: grid; place-items: center; width: 74px; height: 74px; border-radius: 17px; background: #e7f0e8; }
.tool-icon img { width: 40px; height: 40px; object-fit: contain; }
.tool-copy { display: grid; gap: 8px; min-width: 0; }
.tool-copy strong { font-size: 23px; letter-spacing: -.03em; }
.tool-copy span { color: #60766b; font-size: 16px; line-height: 1.6; }
.tool-arrow { width: 22px; height: 22px; }

.promise-strip { width: min(1320px, calc(100% - 96px)); margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); padding: 54px 0; }
.promise-item { display: flex; gap: 22px; min-height: 126px; padding: 0 44px; border-right: 1px solid #dfe9e2; }
.promise-item:first-child { padding-left: 0; }
.promise-item:last-child { padding-right: 0; border-right: 0; }
.promise-icon { flex: 0 0 auto; display: grid; place-items: center; width: 62px; height: 62px; border-radius: 50%; background: #edf4f0; }
.promise-icon img { width: 32px; height: 32px; object-fit: contain; }
.promise-item strong { display: block; margin-top: 3px; font-size: 22px; letter-spacing: -.04em; }
.promise-item p { margin: 12px 0 0; color: #63796e; font-size: 15px; line-height: 1.65; }

.official-bottom-cta { padding: 84px 24px 90px; background: #edf4f0; text-align: center; }
.official-bottom-cta p { margin: 0; color: #176048; font-size: 17px; }
.official-bottom-cta h2 { margin: 18px 0 26px; font-size: clamp(32px, 4vw, 52px); letter-spacing: -.06em; }

.official-footer { background: #fff; }
.official-footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 42px 0 30px; }
.official-footer-inner > div { display: flex; align-items: baseline; gap: 20px; }
.official-footer strong { font-size: 23px; letter-spacing: -.04em; }
.official-footer span { color: #6a7f74; font-size: 14px; }
.footer-meta { width: min(1320px, calc(100% - 96px)); margin: 0 auto; padding: 22px 0 30px; border-top: 1px solid #e3ebe5; color: #779085; font-size: 13px; }

.qr-overlay { position: fixed; inset: 0; z-index: 20; display: grid; place-items: center; padding: 24px; background: #153b30a6; }
.qr-modal { position: relative; width: min(380px, 100%); padding: 36px 34px 30px; border: 1px solid #dce8df; border-radius: 20px; background: #fff; box-shadow: 0 28px 70px #102d244d; text-align: center; }
.modal-close { position: absolute; top: 11px; right: 13px; width: 40px; height: 40px; border: 0; border-radius: 9px; background: transparent; color: #6f8077; font-size: 28px; line-height: 1; }
.modal-close:hover { background: #edf4f0; }
.modal-kicker { margin: 0 0 14px; color: #176048; font-size: 14px; font-weight: 700; }
.qr-modal h2 { margin: 0; color: #153b30; font-size: 28px; letter-spacing: -.04em; }
.modal-description { margin: 12px 0 20px; color: #657a70; font-size: 15px; }
.qr-frame { width: 240px; height: 240px; margin: 0 auto; padding: 12px; border: 1px solid #e0e8e2; border-radius: 16px; background: #f4f8f5; }
.qr-frame img { display: block; width: 100%; height: 100%; border-radius: 10px; object-fit: cover; }
.qr-tip { margin: 14px 0 22px; color: #7b8d84; font-size: 13px; line-height: 1.6; }
.modal-dismiss { width: 100%; min-height: 46px; border: 0; border-radius: 9px; background: #edf4f0; color: #176048; font-weight: 700; }
.modal-dismiss:hover { background: #e1eee5; }

@media (max-width: 1000px) {
  .official-header-inner, .official-hero-inner, .official-footer-inner, .promise-strip, .footer-meta { width: min(100% - 48px, 760px); }
  .official-nav { gap: 20px; }
  .official-hero-inner { grid-template-columns: 1fr; gap: 42px; padding: 36px 0 54px; }
  .official-hero { min-height: 0; }
  .official-hero-inner { min-height: 0; }
  .hero-copy { max-width: 680px; }
  .toolbox-panel { max-width: 680px; }
  .promise-strip { grid-template-columns: 1fr; gap: 30px; padding: 46px 0; }
  .promise-item, .promise-item:first-child, .promise-item:last-child { min-height: 0; padding: 0 0 28px; border-right: 0; border-bottom: 1px solid #dfe9e2; }
  .promise-item:last-child { padding-bottom: 0; border-bottom: 0; }
  .official-footer-inner { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 640px) {
  .official-header-inner, .official-hero-inner, .official-footer-inner, .promise-strip, .footer-meta { width: min(100% - 36px, 520px); }
  .official-header-inner { min-height: 70px; }
  .official-brand { font-size: 23px; }
  .official-nav { gap: 14px; font-size: 13px; }
  .official-nav a { display: none; }
  .official-hero-inner { padding: 28px 0 50px; }
  .hero-copy h1 { margin-top: 24px; font-size: clamp(43px, 12vw, 60px); }
  .hero-copy h1 span { white-space: normal; }
  .hero-description { font-size: 19px; }
  .hero-note { font-size: 12px; line-height: 1.7; }
  .primary-cta { min-width: 210px; min-height: 56px; font-size: 17px; }
  .tool-row { grid-template-columns: 56px minmax(0, 1fr) 18px; min-height: 130px; gap: 14px; padding: 22px 18px; }
  .tool-icon { width: 56px; height: 56px; border-radius: 14px; }
  .tool-icon img { width: 32px; height: 32px; }
  .tool-copy strong { font-size: 18px; }
  .tool-copy span { font-size: 13px; }
  .tool-arrow { width: 18px; height: 18px; }
  .promise-strip { padding: 38px 0; }
  .official-bottom-cta { padding: 64px 18px 70px; }
  .official-footer-inner > div { align-items: flex-start; flex-direction: column; gap: 8px; }
  .official-footer nav { flex-wrap: wrap; gap: 18px; }
  .qr-modal { padding: 34px 22px 24px; }
  .qr-frame { width: min(240px, 76vw); height: min(240px, 76vw); }
}