:root {
  --orange: #e8722a;
  --orange-soft: #f5a66a;
  --teal: #1a6b6e;
  --deep: #1a2e2f;
  --ink: #1f1a14;
  --paper: #faf7f2;
  --muted: #6b6358;
  --card: #fffefb;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Songti SC", serif;
  line-height: 1.75;
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.container.narrow {
  width: min(760px, calc(100% - 40px));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(250, 247, 242, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(26, 46, 47, 0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--orange);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 18px;
  font-weight: 700;
}

.brand strong {
  display: block;
  font-size: 16px;
  color: var(--deep);
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  gap: 22px;
  font-size: 14px;
  color: var(--muted);
}

.nav-links a:hover {
  color: var(--orange);
}

.hero {
  position: relative;
  padding: 72px 0 64px;
  background:
    linear-gradient(135deg, rgba(26, 107, 110, 0.06), rgba(232, 114, 42, 0.08)),
    var(--paper);
  border-bottom: 1px solid rgba(26, 46, 47, 0.06);
}

.hero-inner {
  text-align: center;
}

.eyebrow {
  letter-spacing: 0.2em;
  font-size: 12px;
  color: var(--teal);
}

.hero h1 {
  margin: 10px 0 16px;
  font-size: clamp(32px, 6vw, 52px);
  line-height: 1.25;
  font-weight: 600;
  color: var(--deep);
}

.hero h1 span {
  display: block;
  margin-top: 8px;
  font-size: 0.5em;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.lead {
  max-width: 680px;
  margin: 0 auto;
  font-size: 17px;
  color: var(--muted);
}

.search-box {
  margin: 36px auto 0;
  max-width: 560px;
  display: flex;
  gap: 0;
  border: 2px solid var(--orange);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}

.search-box input {
  flex: 1;
  border: 0;
  padding: 14px 18px;
  font: inherit;
  font-size: 16px;
  outline: none;
}

.search-box button {
  border: 0;
  background: var(--orange);
  color: #fff;
  padding: 0 28px;
  font: inherit;
  font-size: 15px;
  cursor: pointer;
}

.search-box button:hover {
  background: #d46520;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 24px;
  margin-top: 28px;
  font-size: 13px;
  color: var(--muted);
}

.intro,
.tools,
.features,
.about {
  padding: 72px 0;
}

.kicker {
  margin: 0 0 10px;
  color: var(--orange);
  letter-spacing: 0.16em;
  font-size: 12px;
}

h2 {
  margin: 0 0 20px;
  font-size: clamp(26px, 4vw, 36px);
  line-height: 1.3;
  color: var(--deep);
}

.section-head {
  margin-bottom: 32px;
  text-align: center;
}

.grid-3,
.grid-4,
.split,
.footer-grid {
  display: grid;
  gap: 20px;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.tool-card,
.feature-card {
  background: var(--card);
  border: 1px solid rgba(26, 46, 47, 0.08);
  border-radius: 12px;
  padding: 24px;
  transition: box-shadow 0.2s;
}

.tool-card:hover,
.feature-card:hover {
  box-shadow: 0 8px 24px rgba(26, 46, 47, 0.08);
}

.tool-card h3,
.feature-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  color: var(--deep);
}

.tool-card p,
.feature-card p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.tool-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(232, 114, 42, 0.12);
  color: var(--orange);
  display: grid;
  place-items: center;
  font-size: 20px;
  margin-bottom: 14px;
}

.split {
  grid-template-columns: 1.2fr 0.8fr;
  align-items: start;
}

.checklist {
  padding-left: 18px;
  color: var(--muted);
}

.quote-panel {
  background: var(--deep);
  color: #f0ebe3;
  border-radius: 12px;
  padding: 28px;
}

.quote-panel blockquote {
  margin: 0 0 14px;
  font-size: 20px;
  line-height: 1.55;
}

.quote-panel p {
  margin: 0;
  font-size: 13px;
  opacity: 0.7;
}

.numbers {
  padding: 32px 0;
  background: rgba(26, 107, 110, 0.06);
}

.numbers .grid-4 {
  text-align: center;
}

.numbers strong {
  display: block;
  font-size: 28px;
  color: var(--orange);
}

.numbers p {
  margin: 4px 0 0;
  font-size: 14px;
  color: var(--muted);
}

.site-footer {
  padding: 44px 0 52px;
  background: var(--deep);
  color: #e8e2d8;
}

.footer-grid {
  grid-template-columns: 1.2fr 1fr 1fr;
  font-size: 14px;
  color: rgba(232, 226, 216, 0.82);
}

@media (max-width: 860px) {
  .nav-links {
    display: none;
  }

  .grid-3,
  .grid-4,
  .split,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .search-box {
    flex-direction: column;
    border-radius: 12px;
  }

  .search-box button {
    padding: 12px;
  }
}