:root {
  color-scheme: light;
  --forest: #245f4f;
  --forest-dark: #173f35;
  --leaf: #dcebe3;
  --sun: #efc65b;
  --paper: #f8f6ee;
  --card: #ffffff;
  --ink: #20352e;
  --muted: #68766f;
  --line: #d6ddd8;
  --warning: #91502e;
  --shadow: 0 18px 48px rgba(31, 70, 56, 0.12);
}

* { box-sizing: border-box; }

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "HarmonyOS Sans SC", "Microsoft YaHei UI", "PingFang SC", sans-serif;
  line-height: 1.75;
  background:
    radial-gradient(circle at 12% 4%, rgba(239, 198, 91, 0.2), transparent 24rem),
    linear-gradient(180deg, #edf4ef 0, var(--paper) 32rem);
}

a { color: var(--forest); text-underline-offset: 3px; }
a:hover { color: var(--forest-dark); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid rgba(36, 95, 79, 0.15);
  background: rgba(248, 246, 238, 0.93);
  backdrop-filter: blur(14px);
}

.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  width: min(1080px, calc(100% - 32px));
  min-height: 68px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: #fff;
  border-radius: 13px;
  background: var(--forest);
  box-shadow: inset 0 -3px 0 rgba(0, 0, 0, 0.12);
}

.brand-mark::before {
  content: "听";
  font-size: 18px;
  font-weight: 900;
}

.nav-links { display: flex; gap: 18px; }
.nav-links a { color: var(--muted); font-size: 14px; text-decoration: none; }
.nav-links a[aria-current="page"] { color: var(--forest); font-weight: 700; }

.wrap {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 54px 0 64px;
}

.hero {
  padding: 48px;
  color: #fff;
  border-radius: 28px;
  background: linear-gradient(135deg, var(--forest-dark), var(--forest));
  box-shadow: var(--shadow);
}

.hero-layout { display: flex; align-items: center; gap: 44px; }
.hero-copy { display: grid; flex: 1; gap: 20px; }
.hero-icon {
  width: clamp(150px, 24vw, 220px);
  height: auto;
  flex: none;
  border-radius: 25%;
  box-shadow: 0 22px 44px rgba(4, 28, 23, 0.35);
}

.eyebrow {
  color: var(--sun);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

h1, h2, h3 { line-height: 1.35; }
h1 { margin: 0; font-size: clamp(32px, 7vw, 54px); letter-spacing: -0.04em; }
.hero p { max-width: 700px; margin: 0; color: rgba(255, 255, 255, 0.82); font-size: 17px; }

.pill-row { display: flex; flex-wrap: wrap; gap: 10px; }
.pill {
  padding: 7px 12px;
  color: var(--forest-dark);
  border-radius: 999px;
  background: var(--sun);
  font-size: 13px;
  font-weight: 800;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.button.button-sun { color: var(--forest-dark); background: var(--sun); }
.button.button-ghost { color: #fff; border: 1px solid rgba(255, 255, 255, 0.38); background: rgba(255, 255, 255, 0.08); }

.product-section, .compliance-section { margin-top: 58px; }
.section-heading { max-width: 760px; }
.section-heading > span, .story-label { color: var(--forest); font-size: 12px; font-weight: 850; letter-spacing: 0.12em; }
.section-heading h2 { margin: 7px 0 10px; color: var(--forest-dark); font-size: clamp(25px, 4vw, 34px); }
.section-heading p { margin: 0; color: var(--muted); }

.fact-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}
.fact-row div { padding: 20px; border: 1px solid var(--line); border-radius: 17px; background: var(--card); }
.fact-row strong { display: block; color: var(--forest-dark); font-size: 25px; }
.fact-row span { color: var(--muted); font-size: 13px; }

.mode-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}
.mode-card { grid-column: span 2; min-height: 180px; padding: 23px; border: 1px solid var(--line); border-radius: 20px; background: var(--card); }
.mode-card:nth-child(4) { grid-column: 2 / span 2; }
.mode-card span { color: var(--forest); font-size: 12px; font-weight: 800; }
.mode-card h3 { margin: 9px 0 8px; color: var(--forest-dark); font-size: 20px; }
.mode-card p { margin: 0; color: var(--muted); font-size: 14px; }

.flow { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin: 25px 0 0; padding: 0; list-style: none; counter-reset: flow; }
.flow li { position: relative; padding: 20px; border-top: 3px solid var(--sun); background: rgba(255, 255, 255, 0.55); counter-increment: flow; }
.flow li::before { content: "0" counter(flow); display: block; margin-bottom: 18px; color: var(--forest); font-weight: 900; }
.flow b { color: var(--forest-dark); }
.flow p { margin: 7px 0 0; color: var(--muted); font-size: 13px; }

.story-panel { display: grid; grid-template-columns: 1.08fr 1fr; gap: 30px; align-items: center; margin-top: 58px; padding: 24px; border-radius: 24px; background: var(--leaf); }
.story-panel img { display: block; width: 100%; height: auto; border-radius: 18px; box-shadow: 0 14px 34px rgba(31, 70, 56, 0.16); }
.story-panel h2 { margin: 8px 0 10px; color: var(--forest-dark); font-size: 25px; }
.story-panel p { margin: 0; color: var(--muted); font-size: 14px; }

.principle-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 24px; }
.principle-grid div { padding: 20px; border: 1px solid var(--line); border-radius: 17px; background: var(--card); }
.principle-grid b { color: var(--forest-dark); }
.principle-grid p { margin: 5px 0 0; color: var(--muted); font-size: 13px; }

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.card, .doc {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--card);
  box-shadow: 0 10px 30px rgba(31, 70, 56, 0.07);
}

.card { padding: 24px; }
.card h2 { margin: 0 0 8px; font-size: 19px; }
.card p { margin: 0 0 14px; color: var(--muted); font-size: 14px; }
.card a { font-weight: 750; }

.doc { padding: clamp(22px, 5vw, 48px); }
.doc-header { margin-bottom: 24px; }
.doc-header h1 { color: var(--forest-dark); font-size: clamp(28px, 5vw, 42px); }
.meta { margin-top: 8px; color: var(--muted); font-size: 13px; }
.doc h2 { margin: 34px 0 12px; color: var(--forest-dark); font-size: 21px; }
.doc h3 { margin: 24px 0 8px; color: var(--forest); font-size: 17px; }
.doc p { margin: 8px 0; }
.doc li { margin: 5px 0; }

blockquote {
  margin: 20px 0;
  padding: 16px 18px;
  color: var(--forest-dark);
  border-left: 5px solid var(--sun);
  border-radius: 0 12px 12px 0;
  background: #fff8df;
}

table {
  width: 100%;
  margin: 16px 0;
  border-collapse: collapse;
  font-size: 14px;
}

th, td { padding: 11px 12px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--forest-dark); background: var(--leaf); }

.mail-card {
  margin: 20px 0;
  padding: 22px;
  border: 1px solid #c8d9cf;
  border-radius: 16px;
  background: var(--leaf);
}

.mail-card strong { display: block; margin-bottom: 6px; font-size: 13px; }
.mail-address { font-size: clamp(18px, 5vw, 26px); font-weight: 850; overflow-wrap: anywhere; }
.button {
  display: inline-block;
  margin-top: 14px;
  padding: 10px 16px;
  color: #fff;
  border-radius: 11px;
  background: var(--forest);
  font-weight: 750;
  text-decoration: none;
}

.notice { color: var(--warning); }

.footer {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 40px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 12px;
  text-align: center;
}

.footer a { color: var(--muted); }

@media (max-width: 700px) {
  .nav { align-items: flex-start; min-height: 0; padding: 14px 0; }
  .brand { flex: 0 0 auto; }
  .nav-links { justify-content: flex-end; flex-wrap: wrap; gap: 5px 13px; }
  .nav-links a { font-size: 12px; }
  .wrap { padding-top: 28px; }
  .hero { padding: 30px 24px; border-radius: 22px; }
  .hero-layout { align-items: flex-start; flex-direction: column-reverse; gap: 26px; }
  .hero-icon { width: 112px; border-radius: 24px; }
  .fact-row, .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mode-grid { grid-template-columns: 1fr; }
  .mode-card, .mode-card:nth-child(4) { grid-column: auto; min-height: 0; }
  .story-panel { grid-template-columns: 1fr; padding: 16px; }
  .principle-grid { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
  .doc { border-radius: 16px; }
  table { display: block; overflow-x: auto; }
}

@media (max-width: 430px) {
  .fact-row, .flow { grid-template-columns: 1fr; }
}