:root {
  --ivory: #f5f2e9;
  --white: #fbfaf6;
  --graphite: #1d211f;
  --muted: #69716d;
  --gold: #9b7442;
  --green: #426e63;
  --line: rgba(29, 33, 31, .13);
  --tools-content-grid: minmax(0, 1.15fr) minmax(320px, .85fr);
  --tools-content-gap: 8vw;
  --tools-copy-max: 580px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ivory);
  color: var(--graphite);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}
a { color: inherit; text-decoration: none; }
.page { min-height: 100vh; }

header {
  height: 110px;
  padding: 0 6.25vw;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
}
.logo { display: block; width: 226px; height: 78px; margin-right: auto; }
.logo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: left center;
  mix-blend-mode: multiply;
}
header nav {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 15px;
  color: #464d49;
}
header nav a:hover,
header nav a[aria-current="page"] { color: var(--green); }
header nav a[aria-current="page"] { font-weight: 700; }
.nav-cta {
  border: 1px solid rgba(29, 33, 31, .32);
  padding: 10px 20px;
  margin-left: 34px;
  font-size: 14px;
  letter-spacing: .05em;
  white-space: nowrap;
}

.tools-hero {
  padding: 44px 6.25vw 32px;
  border-bottom: 1px solid var(--line);
  align-items: end;
}
.tools-hero,
.section-head {
  display: grid;
  grid-template-columns: var(--tools-content-grid);
  column-gap: var(--tools-content-gap);
}
.eyebrow {
  color: var(--gold);
  font-size: 12px;
  letter-spacing: .2em;
  font-weight: 700;
  margin-bottom: 20px;
}
.tools-hero h1 {
  font: 500 clamp(46px, 4.4vw, 66px)/1.18 "Songti SC", "STSong", serif;
  letter-spacing: -.045em;
  margin: 0;
}
.tools-hero h1 .hero-line { display: inline-block; white-space: nowrap; }
.tools-hero p {
  color: var(--muted);
  font-size: 17px;
  line-height: 2;
  margin: 0;
  max-width: var(--tools-copy-max);
}

.tools-content { padding: 52px 6.25vw 80px; }
.section-head {
  align-items: end;
  margin-bottom: 24px;
}
.section-head h2 {
  font: 500 clamp(30px, 3vw, 44px)/1.25 "Songti SC", "STSong", serif;
  margin: 0;
}
.section-head p { max-width: var(--tools-copy-max); color: var(--muted); line-height: 1.85; margin: 0; }
.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.tool-card {
  min-height: 224px;
  padding: 26px 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(251, 250, 246, .42);
  display: flex;
  flex-direction: column;
}
.tool-card small { color: var(--gold); font-size: 11px; letter-spacing: .16em; }
.tool-card h3 {
  font: 500 22px/1.35 "Songti SC", "STSong", serif;
  margin: 18px 0 10px;
}
.tool-card p { color: var(--muted); line-height: 1.75; margin: 0; }
.tool-status {
  margin-top: auto;
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--green);
  font-size: 13px;
}
.tool-status span:first-child { padding: 6px 9px; border: 1px solid rgba(66, 110, 99, .25); }
.tool-card.is-planning { cursor: default; }
.tool-card.is-planning .tool-status a { pointer-events: none; color: var(--muted); }

.tools-next {
  margin-top: 30px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  background: rgba(251, 250, 246, .42);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.tools-next .eyebrow { margin-bottom: 8px; }
.tools-next strong { display: block; font: 500 20px/1.4 "Songti SC", "STSong", serif; }
.tools-next p { margin: 4px 0 0; color: var(--muted); line-height: 1.7; }
.tools-next a {
  flex: 0 0 auto;
  padding: 11px 16px;
  border: 1px solid rgba(29, 33, 31, .32);
  color: var(--graphite);
  white-space: nowrap;
}
.tools-next a:hover { color: var(--green); border-color: var(--green); }

.framework-note {
  margin-top: 18px;
  padding: 12px 20px;
  background: #1d2622;
  color: #f4f0e5;
  display: grid;
  grid-template-columns: minmax(190px, .8fr) minmax(0, 2fr);
  gap: 24px;
  align-items: center;
}
.framework-note strong { font: 500 16px/1.45 "Songti SC", "STSong", serif; }
.framework-note p { margin: 0; color: rgba(244, 240, 229, .72); font-size: 14px; line-height: 1.7; }

.tool-shell { max-width: 960px; margin: 0 auto; padding: 72px 6.25vw 96px; }
.tool-shell .back { display: inline-block; color: var(--green); margin-bottom: 36px; }
.tool-shell h1 { font: 500 clamp(38px, 5vw, 64px)/1.25 "Songti SC", "STSong", serif; margin: 0 0 24px; }
.tool-shell p { color: var(--muted); font-size: 17px; line-height: 1.9; }
.planning-panel { margin-top: 40px; padding: 32px; border: 1px solid var(--line); background: rgba(251, 250, 246, .54); }
.planning-panel strong { display: block; font: 500 24px/1.4 "Songti SC", "STSong", serif; margin-bottom: 12px; }
.noscript { margin: 24px 6.25vw; padding: 16px; border: 1px solid #9b7442; color: #694d2e; }

@media (max-width: 1100px) {
  header nav { gap: 22px; }
  .nav-cta { margin-left: 22px; }
  .tool-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .tools-hero { grid-template-columns: 1fr; padding-top: 30px; padding-bottom: 24px; gap: 12px; }
  .section-head { display: block; }
  .section-head p { margin-top: 14px; }
  .framework-note { grid-template-columns: 1fr; gap: 10px; }
  .tools-next { align-items: flex-start; flex-direction: column; gap: 16px; }
}
@media (max-width: 620px) {
  .tools-hero,
  .tools-content { padding-left: 20px; padding-right: 20px; }
  .tools-hero h1 { font-size: 40px; margin-bottom: 10px; }
  .tools-hero h1 .hero-line { display: block; }
  .tools-hero h1 .hero-comma { display: none; }
  .tools-hero p { font-size: 15px; line-height: 1.9; }
  .tools-content { padding-top: 36px; }
  .section-head { margin-bottom: 16px; }
  .section-head p { margin-top: 10px; }
  .tool-grid { grid-template-columns: 1fr; }
  .tool-card { min-height: 210px; padding: 20px; }
  .tools-next { margin-top: 24px; padding: 20px; }
  .tools-next strong { font-size: 18px; }
  .tools-next p { font-size: 14px; }
  .tools-next a { width: 100%; text-align: center; }
  .framework-note { padding: 12px 18px; }
  .framework-note strong { font-size: 16px; }
  .tool-shell { padding-left: 20px; padding-right: 20px; }
}