:root {
  color-scheme: light;
  --ink: #121417;
  --ink-soft: #2b3037;
  --paper: #f7f3ec;
  --paper-2: #fffaf1;
  --line: rgba(18, 20, 23, 0.12);
  --teal: #0f766e;
  --amber: #c47a1b;
  --rose: #a33a45;
  --steel: #607082;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(18, 20, 23, 0.18);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Microsoft YaHei", "PingFang SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
}

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

img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 24px;
  padding: 16px clamp(18px, 4vw, 56px);
  color: var(--white);
  background: linear-gradient(180deg, rgba(18, 20, 23, 0.82), rgba(18, 20, 23, 0));
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.12);
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.1;
}

.brand small {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.66);
  font-size: 12px;
}

nav {
  display: flex;
  gap: 22px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
}

.icon-button {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.12);
}

.hero {
  position: relative;
  min-height: 92vh;
  overflow: hidden;
  background: var(--ink);
}

.hero-image,
.hero-scrim {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
}

.hero-scrim {
  background:
    linear-gradient(90deg, rgba(18, 20, 23, 0.92), rgba(18, 20, 23, 0.58) 46%, rgba(18, 20, 23, 0.18)),
    linear-gradient(0deg, rgba(18, 20, 23, 0.52), rgba(18, 20, 23, 0.08) 44%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: clamp(28px, 5vw, 78px);
  align-items: end;
  min-height: 92vh;
  padding: 132px clamp(18px, 6vw, 84px) 58px;
}

.hero-copy {
  max-width: 780px;
  color: var(--white);
}

.eyebrow {
  margin: 0 0 14px;
  color: #d79a3a;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(42px, 7vw, 82px);
  line-height: 0.98;
  letter-spacing: 0;
}

.lead {
  max-width: 660px;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid transparent;
  font-weight: 800;
}

.primary-action {
  background: var(--white);
  color: var(--ink);
}

.secondary-action {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.1);
}

.primary-action.slim {
  width: 100%;
  min-height: 44px;
  background: var(--ink);
  color: var(--white);
}

.primary-action.compact {
  min-height: 42px;
  color: var(--white);
  background: var(--ink);
  cursor: pointer;
}

.hero-panel {
  padding: 24px;
  color: var(--white);
  background: rgba(18, 20, 23, 0.66);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.panel-topline {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.panel-topline span {
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
  text-transform: uppercase;
}

.panel-topline strong {
  font-size: 48px;
}

.meter {
  height: 8px;
  margin: 14px 0 22px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.14);
}

.meter span {
  display: block;
  width: 72%;
  height: 100%;
  background: linear-gradient(90deg, var(--teal), #f0a83a);
}

.signal-list {
  display: grid;
  gap: 14px;
  margin: 0;
}

.signal-list div {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 12px;
  align-items: baseline;
}

.signal-list dt {
  color: #f2b657;
  font-weight: 800;
}

.signal-list dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.market-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
}

.market-strip div {
  padding: 22px clamp(18px, 5vw, 72px);
  background: var(--paper-2);
}

.market-strip strong {
  display: block;
  margin-bottom: 8px;
}

.market-strip span {
  color: var(--ink-soft);
  line-height: 1.7;
}

.section,
.diagnosis-layout,
.roadmap,
.site-footer {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
}

.section {
  padding: 88px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading.compact {
  max-width: 560px;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 22px;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow),
.position-grid p,
.offer p,
.proof-grid p,
.roadmap li,
.site-footer p {
  color: var(--ink-soft);
  line-height: 1.78;
}

.position-grid,
.offer-grid,
.proof-grid {
  display: grid;
  gap: 18px;
}

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

.position-grid article,
.offer,
.proof-grid div {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.46);
}

.position-grid article {
  min-height: 260px;
  padding: 24px;
}

.tile-index {
  display: inline-block;
  margin-bottom: 42px;
  color: var(--teal);
  font-weight: 900;
}

.diagnosis-band {
  padding: 86px 0;
  background: #e7edf0;
}

.diagnosis-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}

.audit {
  display: grid;
  gap: 18px;
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 18px 48px rgba(18, 20, 23, 0.1);
}

.field-row {
  display: grid;
  grid-template-columns: 108px 1fr;
  gap: 14px;
  align-items: center;
}

label,
legend {
  font-weight: 800;
}

select {
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  color: var(--ink);
  background: #f7f7f5;
  border: 1px solid var(--line);
  border-radius: 0;
  font: inherit;
}

fieldset {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 18px;
  border: 1px solid var(--line);
}

fieldset label {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 10px;
  align-items: start;
  color: var(--ink-soft);
  font-weight: 650;
  line-height: 1.55;
}

input[type="checkbox"] {
  width: 17px;
  height: 17px;
  accent-color: var(--teal);
}

.result {
  display: grid;
  gap: 14px;
  padding: 20px;
  background: #f4efe5;
  border-left: 5px solid var(--amber);
}

.result div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
}

.result span {
  color: var(--ink-soft);
  font-weight: 800;
}

.result strong {
  font-size: 52px;
}

.result p {
  margin-bottom: 0;
  color: var(--ink-soft);
  line-height: 1.7;
}

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

.offer {
  display: grid;
  align-content: start;
  min-height: 360px;
  padding: 26px;
}

.offer.featured {
  color: var(--white);
  background: var(--ink);
  border-color: var(--ink);
}

.offer.featured p,
.offer.featured li {
  color: rgba(255, 255, 255, 0.74);
}

.price {
  margin-bottom: 32px;
  color: var(--rose);
  font-size: 15px;
  font-weight: 900;
}

.featured .price {
  color: #f2b657;
}

.offer ul {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding-left: 18px;
  color: var(--ink-soft);
}

.proof-section {
  padding-top: 0;
}

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

.resource-section {
  padding-top: 0;
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.resource-grid a {
  display: grid;
  gap: 12px;
  min-height: 150px;
  padding: 22px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
}

.resource-grid strong {
  font-size: 20px;
}

.resource-grid span {
  color: var(--ink-soft);
  line-height: 1.7;
}

.proof-grid div {
  padding: 22px;
}

.proof-grid strong {
  font-size: 20px;
}

.roadmap {
  padding: 82px 0;
  border-top: 1px solid var(--line);
}

.roadmap ol {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
}

.roadmap li {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 20px;
  padding: 22px;
  background: var(--paper-2);
}

.roadmap span {
  color: var(--teal);
  font-weight: 900;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px 0 42px;
  border-top: 1px solid var(--line);
}

.site-footer p {
  max-width: 620px;
  margin: 8px 0 0;
}

.site-footer a {
  color: var(--teal);
  font-weight: 900;
}

@media (max-width: 920px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  nav {
    display: none;
  }

  .hero-inner,
  .diagnosis-layout {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    max-width: 460px;
  }

  .market-strip,
  .position-grid,
  .offer-grid,
  .proof-grid,
  .resource-grid {
    grid-template-columns: 1fr;
  }

  .position-grid article,
  .offer {
    min-height: auto;
  }
}

.article-page {
  background: var(--paper);
}

.article-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px clamp(18px, 4vw, 56px);
  color: var(--ink);
  background: rgba(247, 243, 236, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.article-header .brand small {
  color: var(--steel);
}

.article-header .brand-mark {
  color: var(--white);
  background: var(--ink);
  border-color: var(--ink);
}

.article-header nav {
  color: var(--ink-soft);
}

.article-main {
  width: min(980px, calc(100% - 36px));
  margin: 0 auto;
  padding: 72px 0 96px;
}

.article-hero {
  display: grid;
  gap: 20px;
  padding-bottom: 38px;
  border-bottom: 1px solid var(--line);
}

.article-hero h1 {
  max-width: 920px;
  margin-bottom: 0;
  color: var(--ink);
  font-size: clamp(38px, 6vw, 68px);
}

.article-lead {
  max-width: 780px;
  color: var(--ink-soft);
  font-size: 19px;
  line-height: 1.75;
}

.article-body {
  display: grid;
  gap: 32px;
  padding-top: 42px;
}

.article-body section {
  padding: 0;
}

.article-body h2 {
  margin-bottom: 14px;
  font-size: clamp(26px, 4vw, 38px);
}

.article-body p,
.article-body li {
  color: var(--ink-soft);
  line-height: 1.82;
}

.article-body ul,
.article-body ol {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 22px;
}

.article-card {
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
}

.article-cta {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 22px;
  align-items: center;
  margin-top: 24px;
  padding: 24px;
  color: var(--white);
  background: var(--ink);
}

.article-cta p {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.72);
}

.article-cta .primary-action {
  white-space: nowrap;
}

.secondary-action.dark {
  color: var(--ink);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.generator-shell {
  width: min(1220px, calc(100% - 36px));
  margin: 0 auto;
  padding: 68px 0 96px;
}

.generator-intro {
  max-width: 940px;
  margin-bottom: 34px;
}

.generator-intro h1 {
  max-width: 940px;
  color: var(--ink);
  font-size: clamp(40px, 6vw, 72px);
}

.generator-layout {
  display: grid;
  grid-template-columns: minmax(360px, 0.86fr) minmax(0, 1.14fr);
  gap: 24px;
  align-items: start;
}

.generator-form,
.generator-output {
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: 0 18px 48px rgba(18, 20, 23, 0.08);
}

.generator-form {
  display: grid;
  gap: 18px;
  padding: 24px;
}

.generator-field {
  display: grid;
  gap: 8px;
}

textarea {
  width: 100%;
  resize: vertical;
  padding: 12px;
  color: var(--ink);
  background: #f7f7f5;
  border: 1px solid var(--line);
  border-radius: 0;
  font: inherit;
  line-height: 1.6;
}

.generator-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
}

.generator-actions .primary-action {
  color: var(--white);
  background: var(--ink);
}

.generator-actions button {
  cursor: pointer;
}

.generator-actions button:disabled {
  cursor: wait;
  opacity: 0.72;
}

.generator-note {
  margin: 0;
  color: var(--steel);
  font-size: 13px;
  line-height: 1.7;
}

.generator-output {
  min-height: 620px;
  padding: 24px;
}

.output-placeholder {
  display: grid;
  min-height: 560px;
  align-content: center;
  padding: 24px;
  background: #f4efe5;
}

.output-placeholder h2,
.result-toolbar h2 {
  font-size: clamp(28px, 4vw, 44px);
}

.generated-result {
  display: grid;
  gap: 18px;
}

.result-toolbar {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 18px;
  align-items: start;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.result-toolbar button {
  min-height: 42px;
  cursor: pointer;
}

.result-toolbar button:disabled {
  cursor: wait;
  opacity: 0.74;
}

.result-block,
.slide-card {
  padding: 20px;
  background: #fbf7ef;
  border: 1px solid var(--line);
}

.result-block h3,
.slide-card h3 {
  margin-bottom: 10px;
}

.result-block p,
.result-block li,
.slide-card p,
.slide-card li {
  color: var(--ink-soft);
  line-height: 1.75;
}

.result-block pre {
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  color: var(--ink-soft);
  font: inherit;
  line-height: 1.75;
}

.slide-list {
  display: grid;
  gap: 12px;
}

.slide-card span {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--teal);
  font-weight: 900;
}

.slide-card ul {
  margin: 10px 0 14px;
  padding-left: 20px;
}

@media (max-width: 620px) {
  .article-header nav {
    display: none;
  }

  .article-main {
    padding-top: 48px;
  }

  .article-cta {
    grid-template-columns: 1fr;
  }

  .generator-shell {
    padding-top: 48px;
  }

  .generator-layout,
  .generator-actions,
  .result-toolbar {
    grid-template-columns: 1fr;
  }

  .generator-form,
  .generator-output {
    padding: 18px;
  }

  .generator-output {
    min-height: auto;
  }

  .output-placeholder {
    min-height: 320px;
    padding: 18px;
  }
}

@media (max-width: 620px) {
  .site-header {
    padding: 12px 14px;
  }

  .brand-mark,
  .icon-button {
    width: 38px;
    height: 38px;
  }

  .hero {
    min-height: auto;
  }

  .hero-inner {
    min-height: 100svh;
    padding: 104px 18px 32px;
  }

  h1 {
    font-size: 42px;
  }

  .lead {
    font-size: 16px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .primary-action,
  .secondary-action {
    width: 100%;
  }

  .hero-panel {
    padding: 18px;
  }

  .section {
    padding: 64px 0;
  }

  .diagnosis-band {
    padding: 62px 0;
  }

  .audit {
    padding: 18px;
  }

  .field-row,
  .roadmap li {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
  }
}