@import url("https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;700;800&family=Noto+Serif+SC:wght@400;600;700;900&display=swap");

:root {
  --bg: #f7f8fc;
  --bg-deep: #eef2fa;
  --ink: #162238;
  --muted: #5a6a7f;
  --brand: #ff7f32;
  --brand-2: #0f4dff;
  --brand-3: #0fb7a1;
  --panel: #ffffff;
  --line: #d8e0ec;
  --line-strong: #c7d2e3;
  --shadow: 0 22px 40px rgba(16, 34, 61, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 2% 12%, rgba(15, 77, 255, 0.1), transparent 26%),
    radial-gradient(circle at 98% 7%, rgba(255, 127, 50, 0.14), transparent 22%),
    linear-gradient(180deg, #fbfcff 0%, var(--bg) 48%, var(--bg-deep) 100%);
  font: 16px/1.8 "Outfit", "Noto Serif SC", "Microsoft YaHei UI", sans-serif;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 24px;
  backdrop-filter: blur(10px);
  background: rgba(247, 250, 255, 0.72);
  border-bottom: 1px solid rgba(199, 210, 227, 0.52);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #15243d;
}

.brand-logo {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  flex-shrink: 0;
  box-shadow: 0 6px 14px rgba(16, 58, 145, 0.22);
}

.brand-main {
  font: 800 1.18rem/1 "Noto Serif SC", "Microsoft YaHei UI", serif;
  letter-spacing: 0.04em;
}

.brand-sub {
  font: 700 0.74rem/1 "Outfit", sans-serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #4b6381;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid #d3dfef;
  background: #fff;
}

.site-nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.site-nav a {
  text-decoration: none;
  font-weight: 600;
  color: #2b3a53;
  border-radius: 999px;
  padding: 6px 11px;
  transition: background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.site-nav a:hover {
  transform: translateY(-1px);
  background: rgba(15, 77, 255, 0.08);
}

.site-nav a[aria-current="page"] {
  background: linear-gradient(135deg, rgba(15, 77, 255, 0.12), rgba(15, 183, 161, 0.14));
  color: #123fbe;
}

main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 22px 24px 44px;
}

h1, h2, h3 {
  color: #122033;
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin: 0;
}

p {
  margin-top: 0;
}

.hero {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    radial-gradient(1200px 380px at 15% -30%, rgba(15, 183, 161, 0.17), transparent 45%),
    radial-gradient(800px 360px at 100% 0%, rgba(15, 77, 255, 0.2), transparent 43%),
    linear-gradient(125deg, #ffffff 0%, #f0f6ff 64%, #eaf3ff 100%);
  box-shadow: var(--shadow);
  animation: rise 680ms ease-out;
}

.hero::after {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  right: -180px;
  top: -210px;
  background: radial-gradient(circle at center, rgba(255, 127, 50, 0.28), transparent 65%);
  pointer-events: none;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr;
  gap: 18px;
  padding: 34px 28px;
}

.hero-copy {
  display: flex;
  flex-direction: column;
}

.kicker {
  margin: 0 0 10px;
  color: #1348d8;
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  font-family: "Noto Serif SC", "Microsoft YaHei UI", serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
  max-width: 13ch;
}

.hero-sub {
  margin-top: 14px;
  color: #2f4462;
  max-width: 60ch;
}

.hero-actions {
  display: flex;
  gap: 11px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 700;
  padding: 10px 16px;
  border-radius: 11px;
  transition: transform 160ms ease, opacity 160ms ease, box-shadow 160ms ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #1742d4, #1d68ff 45%, #0eaac2);
  box-shadow: 0 10px 22px rgba(18, 79, 233, 0.3);
}

.btn-ghost {
  border: 1px solid var(--line-strong);
  background: #fff;
}

.hero-side {
  display: grid;
  gap: 12px;
}

.metric-card {
  padding: 16px 14px;
  border-radius: 14px;
  border: 1px solid rgba(135, 154, 184, 0.34);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(4px);
}

.metric-label {
  color: #5c6f87;
  font-size: 0.88rem;
  margin-bottom: 4px;
}

.metric-value {
  margin: 2px 0 4px;
  font-size: 2rem;
  line-height: 1.1;
  font-weight: 800;
  color: #15347f;
}

.metric-note {
  color: #48607f;
  margin: 0;
}

.mini-list {
  margin: 0;
  padding-left: 17px;
  color: #364d69;
}

.panel {
  margin-top: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.panel h2 {
  font-size: 1.5rem;
  margin-bottom: 14px;
}

.grid {
  display: grid;
  gap: 14px;
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.three article {
  border-radius: 12px;
  border: 1px solid rgba(198, 211, 229, 0.84);
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  padding: 16px;
}

.grid.three h3 {
  margin-bottom: 6px;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.pill-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  border: 1px solid rgba(18, 65, 187, 0.17);
  background: linear-gradient(120deg, rgba(15, 77, 255, 0.09), rgba(15, 183, 161, 0.11));
}

.timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.timeline article {
  position: relative;
  background: #f8fbff;
  border: 1px solid #dce6f3;
  border-radius: 14px;
  padding: 16px;
}

.timeline article::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 3px;
  border-radius: 14px 14px 0 0;
  background: linear-gradient(90deg, #1e5dff, #10b1b2, #ff8c3e);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.section-head a {
  text-decoration: none;
  color: #184fd8;
  font-weight: 700;
}

.post-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  background: linear-gradient(180deg, #ffffff 0%, #f7fbff 100%);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.post-card:hover {
  transform: translateY(-2px);
  border-color: #c6d4ea;
  box-shadow: 0 10px 24px rgba(20, 39, 60, 0.1);
}

.post-card h3 {
  margin: 8px 0 10px;
  font-size: 1.13rem;
}

.post-card h3 a {
  text-decoration: none;
}

.post-meta, .article-meta, .muted {
  color: var(--muted);
  font-size: 0.9rem;
}

.post-meta {
  display: inline-flex;
  border-radius: 999px;
  border: 1px solid #d9e4f3;
  background: #fff;
  padding: 4px 10px;
  font-size: 0.82rem;
  margin: 0;
}

.read-more {
  display: inline-block;
  margin-top: 6px;
  color: #0f4dff;
  font-weight: 700;
  text-decoration: none;
}

.article-main {
  max-width: 900px;
}

.article {
  padding: 30px;
}

.article h1 {
  margin: 8px 0 14px;
  font-family: "Noto Serif SC", "Microsoft YaHei UI", serif;
  font-size: clamp(2rem, 3.2vw, 2.7rem);
}

.article h2 {
  margin: 26px 0 10px;
  font-size: 1.3rem;
}

.article pre {
  overflow-x: auto;
  border: 1px solid #264979;
  background: #0f1d32;
  color: #e5efff;
  border-radius: 12px;
  padding: 14px;
  font-size: 0.92rem;
}

.article ul,
.article ol {
  padding-left: 20px;
}

.site-footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 24px 40px;
  color: var(--muted);
  font-size: 0.94rem;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .hero-layout,
  .timeline,
  .grid.three,
  .grid.two {
    grid-template-columns: 1fr;
  }

  .site-header,
  main,
  .site-footer {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero {
    border-radius: 22px;
  }

  .hero-layout {
    padding: 26px 18px;
  }

  .article {
    padding: 22px 18px;
  }
}

/* Home redesign: asym layout + motion strip */
.home-main {
  display: grid;
  gap: 18px;
}

.stage {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.2fr 0.85fr;
  gap: 16px;
  border-radius: 30px;
  padding: 34px;
  border: 1px solid #cfd9ea;
  background:
    linear-gradient(140deg, #ffffff 0%, #f2f7ff 45%, #edf7ff 100%);
  box-shadow: 0 24px 44px rgba(16, 34, 61, 0.1);
}

.stage::before {
  content: "";
  position: absolute;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  left: -300px;
  top: -360px;
  background: radial-gradient(circle at center, rgba(255, 127, 50, 0.22), transparent 70%);
  pointer-events: none;
}

.stage::after {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  right: -200px;
  bottom: -230px;
  background: radial-gradient(circle at center, rgba(15, 77, 255, 0.22), transparent 70%);
  pointer-events: none;
}

.stage-copy {
  position: relative;
  z-index: 2;
}

.stage-copy h1 {
  font-family: "Noto Serif SC", serif;
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 1.05;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.stage-copy h1 span {
  color: #1454dd;
}

.stage .hero-sub {
  font-size: 1.05rem;
  max-width: 54ch;
}

.orbit-board {
  position: relative;
  min-height: 340px;
  border-radius: 24px;
  border: 1px solid #d2def0;
  background:
    radial-gradient(circle at 20% 10%, rgba(15, 183, 161, 0.12), transparent 40%),
    linear-gradient(160deg, rgba(255, 255, 255, 0.85), rgba(240, 247, 255, 0.86));
  backdrop-filter: blur(4px);
}

.orbit-core {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 165px;
  height: 165px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1247d8, #0f79ec, #11b6a5);
  box-shadow: 0 16px 28px rgba(17, 73, 187, 0.34);
  color: #fff;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 14px;
}

.orbit-core p {
  margin: 0;
  font-size: 0.78rem;
  opacity: 0.9;
}

.orbit-core strong {
  font-size: 2.1rem;
  line-height: 1;
}

.orbit-core span {
  font-size: 0.78rem;
}

.orbit-tag {
  position: absolute;
  width: 150px;
  border-radius: 14px;
  padding: 12px;
  border: 1px solid #c9d8ee;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 8px 22px rgba(16, 34, 61, 0.1);
  animation: floaty 5.8s ease-in-out infinite;
}

.orbit-tag h3 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.orbit-tag p {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.5;
  color: #4f6481;
}

.orbit-a {
  left: 14px;
  top: 20px;
}

.orbit-b {
  right: 16px;
  top: 44px;
  animation-delay: 1.2s;
}

.orbit-c {
  left: 36px;
  bottom: 18px;
  animation-delay: 2s;
}

.idea-strip {
  overflow: hidden;
  border-radius: 14px;
  border: 1px solid #d4e0f0;
  background: #f8fbff;
}

.idea-track {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  min-width: max-content;
  animation: slide-left 28s linear infinite;
}

.idea-track span {
  border-radius: 999px;
  padding: 6px 12px;
  border: 1px solid #d2deee;
  background: #ffffff;
  color: #23466f;
  font-size: 0.84rem;
  font-weight: 700;
}

.feature-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1.2fr 1fr 1fr;
}

.feature {
  border-radius: 16px;
  border: 1px solid #d5e1f1;
  background: #ffffff;
  padding: 18px;
  box-shadow: 0 10px 24px rgba(16, 34, 61, 0.08);
}

.feature-main {
  grid-row: span 2;
  background:
    linear-gradient(140deg, #122544 0%, #1b3764 48%, #1f5f85 100%);
  color: #ebf4ff;
  border: 0;
}

.feature-main h2 {
  color: #ffffff;
  font-size: 1.8rem;
  margin-bottom: 10px;
}

.feature-main .read-more {
  color: #9ed8ff;
}

.feature-kicker {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #7fdbff;
}

.panel-steps {
  background: linear-gradient(160deg, #fefefe 0%, #f5f9ff 100%);
}

.panel-posts {
  background: linear-gradient(180deg, #ffffff 0%, #f9fbff 100%);
}

@keyframes slide-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}

@media (max-width: 980px) {
  .stage {
    grid-template-columns: 1fr;
    padding: 24px 16px;
    border-radius: 20px;
  }

  .orbit-board {
    min-height: 290px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }
}

/* Tools page */
.tools-hero h1 {
  font-family: "Noto Serif SC", serif;
  font-size: clamp(1.8rem, 3.6vw, 2.8rem);
  margin-bottom: 12px;
}

.tools-hero p {
  max-width: 70ch;
  color: #3e5572;
}

.tool-grid {
  display: grid;
  gap: 14px;
  margin-top: 14px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.tool-filter {
  border: 1px solid #cfdbed;
  background: #fff;
  color: #274566;
  padding: 7px 12px;
  border-radius: 999px;
  font: 700 0.86rem/1 "Outfit", sans-serif;
  cursor: pointer;
  transition: transform 160ms ease, background-color 160ms ease, color 160ms ease;
}

.tool-filter:hover {
  transform: translateY(-1px);
  background: #f2f7ff;
}

.tool-filter.is-active {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(140deg, #1248da, #11a8c0);
}

.tool-card {
  border: 1px solid #d3deee;
  border-radius: 14px;
  background: linear-gradient(180deg, #ffffff 0%, #f7fbff 100%);
  padding: 16px;
  box-shadow: 0 10px 24px rgba(16, 34, 61, 0.08);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.tool-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(16, 34, 61, 0.12);
}

.tool-card h3 {
  margin: 4px 0 8px;
  font-size: 1.15rem;
}

.tool-card p {
  margin: 0 0 8px;
  color: #405875;
}

.tool-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0 10px;
}

.tool-stat-chip {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 6px 12px;
  border: 1px solid #d3deee;
  background: #ffffff;
  font-size: 0.84rem;
  font-weight: 700;
  color: #21466f;
}

.tool-search-form {
  margin-top: 10px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.tool-search-form input {
  border: 1px solid #cdd9ea;
  border-radius: 10px;
  padding: 10px 12px;
  font: 500 0.95rem/1.4 "Outfit", "Microsoft YaHei UI", sans-serif;
  background: #fff;
}

.tool-search-form input:focus {
  outline: 2px solid rgba(15, 77, 255, 0.2);
  border-color: #5b86df;
}

.tool-meta {
  display: inline-flex;
  margin: 0;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid #d8e3f2;
  background: #fff;
  font-size: 0.8rem;
  color: #58708d;
}

.tool-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0;
}

.tool-metrics span {
  font-size: 0.8rem;
  color: #3a587b;
  border: 1px solid #d8e3f2;
  border-radius: 999px;
  padding: 3px 9px;
  background: #fff;
}

.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 8px;
}

.tool-official {
  display: inline-flex;
  text-decoration: none;
  color: #1e5ddb;
  font-weight: 700;
}

.prompt-grid {
  align-items: stretch;
}

.prompt-card {
  border: 1px solid #d5e1f1;
  border-radius: 14px;
  background: #fff;
  padding: 16px;
}

.prompt-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.btn-mini {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  border: 1px solid #c8d8ef;
  background: #fff;
  color: #184fce;
  border-radius: 10px;
  padding: 7px 12px;
  font-weight: 700;
  font-size: 0.88rem;
}

.btn-mini:hover {
  background: #f1f6ff;
}

.prompt-card pre,
.template-card pre {
  overflow-x: auto;
  border: 1px solid #264979;
  background: #0f1d32;
  color: #e5efff;
  border-radius: 10px;
  padding: 12px;
  font-size: 0.86rem;
}

.copy-btn {
  border: 1px solid #c8d8ef;
  background: #ffffff;
  color: #194fce;
  border-radius: 10px;
  padding: 8px 12px;
  font-weight: 700;
  cursor: pointer;
}

.copy-btn:hover {
  background: #f1f6ff;
}

.template-card {
  border: 1px solid #d5e1f1;
  border-radius: 14px;
  background: #fff;
  padding: 14px;
}

.scenario-grid article {
  min-height: 126px;
}

.quick-start .read-more {
  margin-top: 10px;
}

.trust-grid article {
  min-height: 120px;
}

.is-hidden {
  display: none !important;
}

@media (max-width: 980px) {
  .tool-grid {
    grid-template-columns: 1fr;
  }

  .tool-search-form {
    grid-template-columns: 1fr;
  }
}