:root {
  --bg: #05080d;
  --ink: #f7fbff;
  --muted: rgba(232, 238, 242, 0.72);
  --soft: rgba(232, 238, 242, 0.48);
  --paper: #eaf1f7;
  --paper-2: #dce8f2;
  --paper-ink: #0c1321;
  --paper-muted: #526176;
  --panel: rgba(10, 14, 20, 0.78);
  --panel-strong: rgba(7, 10, 15, 0.94);
  --line: rgba(133, 166, 192, 0.25);
  --line-dark: rgba(255, 255, 255, 0.12);
  --cyan: #53d7ff;
  --blue: #2f5dff;
  --lime: #eaff19;
  --amber: #ffb84f;
  --orange: #ff7a1a;
  --red: #ff5f86;
  --radius: 8px;
  --content: min(1480px, calc(100vw - 72px));
  --shadow: 0 28px 80px rgba(6, 16, 30, 0.2);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.026) 1px, transparent 1px) 0 0 / 88px 88px,
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px) 0 0 / 88px 88px,
    linear-gradient(180deg, #05080d 0 1080px, var(--paper) 1080px 100%);
  color: var(--ink);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Microsoft YaHei",
    sans-serif;
  letter-spacing: 0;
  line-break: strict;
  overflow-wrap: break-word;
  text-rendering: geometricprecision;
  word-break: normal;
}

h1,
h2,
h3,
p,
li,
dd,
b,
strong {
  text-wrap: pretty;
}

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

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

.site-header {
  position: sticky;
  top: 14px;
  z-index: 30;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  width: var(--content);
  min-height: 64px;
  margin: 14px auto 0;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  background: rgba(6, 10, 15, 0.72);
  box-shadow: 0 16px 60px rgba(0, 0, 0, 0.26);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
  font-size: 14px;
  font-weight: 900;
}

.brand span {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(83, 215, 255, 0.32);
  border-radius: var(--radius);
  background: linear-gradient(145deg, #0f172a, #1f5dff 82%);
  color: #fff;
  font-size: 12px;
}

.page-nav {
  display: flex;
  gap: 5px;
  justify-content: center;
  min-width: 0;
  padding: 5px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
}

.page-nav a {
  min-height: 32px;
  padding: 8px 12px;
  border-radius: 6px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  font-weight: 850;
  white-space: nowrap;
}

.page-nav a:hover,
.page-nav a.is-active {
  background: rgba(234, 255, 25, 0.95);
  color: #111214;
}

.header-action,
.hero-actions a,
.version-card a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 900;
}

.header-action {
  padding: 0 16px;
  background: var(--lime);
  color: #111214;
}

main {
  overflow: hidden;
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(420px, 0.9fr) minmax(540px, 1.1fr);
  gap: 40px 46px;
  align-items: center;
  align-content: center;
  width: var(--content);
  min-height: min(940px, calc(100vh - 88px));
  margin: 0 auto;
  padding: 64px 0 46px;
}

.hero-copy {
  min-width: 0;
}

.label,
.section-heading p {
  margin: 0;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero-copy h1 {
  max-width: 720px;
  margin: 16px 0 0;
  font-size: 76px;
  line-height: 1.02;
  font-weight: 950;
  overflow-wrap: anywhere;
}

.hero-copy h1 span,
.section-heading h2 .heading-line {
  display: block;
  white-space: nowrap;
}

.hero-lead {
  max-width: 700px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 18px;
  font-weight: 680;
  line-height: 1.78;
}

.hero-sentence {
  display: inline-flex;
  margin-top: 24px;
  padding: 14px 16px;
  border: 1px solid rgba(234, 255, 25, 0.32);
  border-radius: var(--radius);
  background: rgba(234, 255, 25, 0.1);
  color: var(--lime);
  font-size: 30px;
  font-weight: 950;
  line-height: 1.1;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-actions a {
  padding: 0 18px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.hero-actions a:first-child {
  background: #fff;
  color: #071014;
}

.hero-visual {
  min-width: 0;
}

.visual-panel {
  position: relative;
  aspect-ratio: 2048 / 1035;
  min-height: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background:
    linear-gradient(90deg, rgba(5, 8, 13, 0.02), rgba(5, 8, 13, 0.08)),
    url("./ai-base-share-hero-poster.png") center / cover no-repeat,
    linear-gradient(110deg, #d7e2eb 0%, #88b3c8 43%, #141923 100%);
  box-shadow: var(--shadow);
}

.visual-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(5, 8, 13, 0.08));
  pointer-events: none;
}

.visual-panel img {
  display: none;
}

.panel-topline {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 22px 24px 0;
  color: rgba(5, 8, 13, 0.74);
  font-size: 11px;
  font-weight: 950;
  letter-spacing: 0.08em;
}

.signal-card {
  position: absolute;
  left: 24px;
  bottom: 24px;
  z-index: 2;
  width: min(360px, calc(100% - 48px));
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  background: rgba(7, 10, 15, 0.82);
  color: #fff;
  backdrop-filter: blur(14px);
}

.signal-card b,
.signal-card span {
  display: block;
}

.signal-card b {
  font-size: 24px;
}

.signal-card span {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  font-weight: 750;
}

.hero-metrics {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.hero-metrics article {
  min-height: 136px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  background: rgba(8, 14, 22, 0.76);
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(16px);
}

.hero-metrics span {
  display: block;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 950;
}

.hero-metrics strong {
  display: block;
  margin-top: 8px;
  color: #fff;
  font-size: 54px;
  line-height: 1;
  font-weight: 950;
}

.hero-metrics p {
  margin: 12px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  font-weight: 720;
  line-height: 1.5;
  overflow-wrap: break-word;
}

.source-strip,
.section,
.page-footer {
  width: var(--content);
  margin: 0 auto;
}

.source-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 30px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  background: rgba(7, 10, 15, 0.72);
  color: rgba(255, 255, 255, 0.74);
  font-size: 13px;
  font-weight: 740;
}

.source-strip b {
  color: #fff;
}

.source-strip span {
  padding: 8px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
}

.section {
  scroll-margin-top: 100px;
  padding: 62px 0;
  color: var(--paper-ink);
}

.section-heading {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  margin-bottom: 24px;
}

.section-heading > span {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border-radius: var(--radius);
  background: #071014;
  color: var(--lime);
  font-size: 26px;
  font-weight: 950;
}

.section-heading h2 {
  max-width: 980px;
  margin: 8px 0 0;
  font-size: 52px;
  line-height: 1.08;
  font-weight: 950;
  text-wrap: balance;
}

.method-title span {
  display: inline;
}

.application-grid,
.risk-grid,
.module-grid,
.value-grid,
.roadmap-grid {
  display: grid;
  gap: 16px;
}

.application-grid {
  grid-template-columns: 1fr 1fr 1.1fr;
}

.system-card,
.tool-card,
.map-card,
.risk-grid article,
.blueprint-main,
.infrastructure-card,
.module-grid article,
.method-intro,
.method-flow article,
.value-grid article,
.roadmap-grid article,
.version-card {
  border-radius: var(--radius);
  box-shadow: 0 24px 64px rgba(12, 27, 44, 0.08);
}

.system-card,
.tool-card,
.map-card,
.risk-grid article,
.value-grid article,
.roadmap-grid article {
  min-height: 250px;
  padding: 24px;
  border: 1px solid rgba(100, 116, 139, 0.18);
  background: rgba(255, 255, 255, 0.72);
}

.system-card h3,
.tool-card h3,
.map-card h3,
.risk-grid h3,
.blueprint-main h3,
.module-grid h3,
.method-flow h3,
.value-grid h3,
.roadmap-grid h3 {
  margin: 0;
  font-size: 28px;
  line-height: 1.22;
}

.level-bars {
  display: grid;
  gap: 18px;
  margin-top: 34px;
}

.level-bars div {
  display: grid;
  gap: 9px;
}

.level-bars span {
  color: var(--paper-muted);
  font-size: 14px;
  font-weight: 850;
}

.level-bars i {
  display: block;
  width: 100%;
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(12, 19, 33, 0.1);
}

.level-bars i::before {
  content: "";
  display: block;
  width: var(--value);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), var(--cyan), var(--lime));
}

.tool-tags,
.scenario-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.tool-tags span,
.scenario-list span {
  min-height: 36px;
  padding: 9px 12px;
  border-radius: 6px;
  background: #071014;
  color: #fff;
  font-size: 13px;
  font-weight: 850;
}

.scenario-list span {
  background: rgba(47, 93, 255, 0.1);
  color: #15306f;
}

.risk-section,
.method-section,
.version-section {
  width: 100%;
  max-width: none;
  padding-left: max(36px, calc((100vw - 1480px) / 2));
  padding-right: max(36px, calc((100vw - 1480px) / 2));
  background: #071014;
  color: #fff;
}

.risk-section .section-heading,
.method-section .section-heading,
.version-section .section-heading {
  width: min(1480px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.risk-section .section-heading > span,
.method-section .section-heading > span,
.version-section .section-heading > span {
  background: var(--lime);
  color: #111214;
}

.risk-grid,
.method-intro,
.method-flow,
.version-grid {
  width: min(1480px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.risk-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.risk-grid article {
  display: flex;
  min-height: 306px;
  flex-direction: column;
  border-color: rgba(255, 255, 255, 0.12);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.035)),
    #0c121a;
  color: #fff;
}

.risk-level {
  align-self: flex-start;
  padding: 7px 9px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 950;
}

.risk-level.high {
  background: rgba(255, 95, 134, 0.14);
  color: #ff9bb4;
}

.risk-level.mid {
  background: rgba(255, 184, 79, 0.14);
  color: #ffd08d;
}

.risk-grid h3 {
  margin-top: 18px;
}

.risk-grid p,
.risk-grid b {
  font-size: 14px;
  line-height: 1.64;
}

.risk-grid p {
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-weight: 650;
}

.risk-grid b {
  display: block;
  margin-top: auto;
  padding-top: 16px;
  color: rgba(234, 255, 25, 0.92);
}

.blueprint-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.42fr);
  gap: 18px;
}

.blueprint-main,
.infrastructure-card {
  padding: 26px;
  border: 1px solid rgba(100, 116, 139, 0.18);
  background: rgba(255, 255, 255, 0.76);
}

.blueprint-main ul {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.blueprint-main li {
  position: relative;
  padding: 12px 14px 12px 36px;
  border: 1px solid rgba(100, 116, 139, 0.14);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.72);
  color: #334155;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.58;
}

.blueprint-main li::before {
  content: "";
  position: absolute;
  top: 21px;
  left: 17px;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--blue);
  box-shadow: 0 0 0 5px rgba(47, 93, 255, 0.1);
}

.infrastructure-card {
  display: flex;
  min-height: 360px;
  flex-direction: column;
  justify-content: center;
  gap: 28px;
  background:
    linear-gradient(135deg, rgba(234, 255, 25, 0.92), rgba(83, 215, 255, 0.3)),
    #eaff19;
  color: #071014;
}

.infrastructure-card span {
  font-size: 13px;
  font-weight: 950;
}

.infrastructure-card strong {
  font-size: 54px;
  line-height: 1.02;
  font-weight: 950;
}

.module-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.module-grid article {
  min-height: 248px;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background:
    linear-gradient(145deg, rgba(83, 215, 255, 0.09), transparent),
    #0b1118;
  color: #fff;
}

.module-grid article.wide {
  grid-column: auto;
}

.module-grid span,
.roadmap-grid span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 34px;
  border-radius: 6px;
  background: rgba(234, 255, 25, 0.95);
  color: #111214;
  font-size: 14px;
  font-weight: 950;
}

.module-grid h3 {
  margin-top: 40px;
}

.module-grid p {
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.66);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.66;
}

.method-intro {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  margin-bottom: 16px;
  padding: 18px 20px;
  border: 1px solid rgba(234, 255, 25, 0.24);
  background: rgba(234, 255, 25, 0.08);
}

.method-intro strong {
  color: var(--lime);
  font-size: 21px;
}

.method-intro p {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.64;
}

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

.method-flow article {
  display: grid;
  grid-template-rows: auto auto minmax(54px, auto) auto;
  min-height: 286px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background:
    linear-gradient(145deg, rgba(83, 215, 255, 0.08), transparent 60%),
    rgba(255, 255, 255, 0.055);
}

.method-flow article.wide {
  grid-column: span 3;
  grid-template-columns: auto minmax(170px, 0.34fr) minmax(300px, 0.86fr) minmax(420px, 1.2fr);
  grid-template-rows: auto;
  align-items: start;
  gap: 18px;
  min-height: 0;
}

.method-flow span {
  align-self: flex-start;
  justify-self: start;
  display: inline-flex;
  min-width: 42px;
  justify-content: center;
  padding: 7px 10px;
  border-radius: 6px;
  background: var(--lime);
  color: #111214;
  font-size: 13px;
  font-weight: 950;
}

.method-flow h3 {
  margin-top: 14px;
}

.method-flow p {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.58;
}

.method-flow dl {
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding-top: 0;
}

.method-flow article.wide h3,
.method-flow article.wide p,
.method-flow article.wide dl {
  margin-top: 0;
}

.method-flow dl div {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 8px;
  padding: 8px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
}

.method-flow dt,
.method-flow dd {
  margin: 0;
  font-size: 12px;
  line-height: 1.45;
}

.method-flow dt {
  color: var(--cyan);
  font-weight: 950;
}

.method-flow dd {
  color: rgba(255, 255, 255, 0.76);
  font-weight: 730;
}

.value-path {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 20px;
  padding: 16px;
  border: 1px solid rgba(100, 116, 139, 0.18);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.76);
}

.value-path span {
  padding: 11px 13px;
  border-radius: 6px;
  background: #071014;
  color: #fff;
  font-size: 13px;
  font-weight: 900;
}

.value-path i {
  display: block;
  width: 36px;
  height: 2px;
  background: var(--blue);
}

.value-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.value-grid article {
  min-height: 198px;
}

.value-grid p,
.roadmap-grid p {
  margin: 14px 0 0;
  color: var(--paper-muted);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.72;
}

.version-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.version-card {
  position: relative;
  min-height: 356px;
  overflow: hidden;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: #0b1118;
}

.version-card::before {
  content: "";
  position: absolute;
  inset: auto -120px -180px auto;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: rgba(83, 215, 255, 0.14);
}

.version-one::before {
  background: rgba(234, 255, 25, 0.15);
}

.version-meta,
.version-card p,
.version-card a,
.version-card small {
  position: relative;
  z-index: 1;
}

.version-meta > span {
  display: block;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.version-meta b {
  display: block;
  max-width: 520px;
  margin-top: 14px;
  color: #fff;
  font-size: 48px;
  line-height: 1.06;
}

.version-meta b span {
  display: block;
  color: inherit;
  font: inherit;
  letter-spacing: 0;
  text-transform: none;
  white-space: nowrap;
}

.version-card p {
  max-width: 560px;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 16px;
  font-weight: 720;
  line-height: 1.62;
}

.version-card a {
  margin-top: 28px;
  padding: 0 20px;
  background: var(--lime);
  color: #111214;
}

.version-current a {
  background: var(--cyan);
}

.version-card small {
  display: block;
  margin-top: 14px;
  color: rgba(255, 255, 255, 0.48);
  font-size: 13px;
  line-height: 1.5;
  word-break: break-all;
}

.roadmap-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.roadmap-grid article {
  min-height: 204px;
}

.roadmap-grid h3 {
  margin-top: 24px;
}

.thanks-section {
  width: 100%;
  max-width: none;
  padding: 58px max(36px, calc((100vw - 1480px) / 2)) 64px;
  background: #071014;
  color: #fff;
}

.thanks-panel {
  position: relative;
  width: min(1480px, 100%);
  margin: 0 auto;
  overflow: hidden;
  padding: 42px 46px;
  border: 1px solid rgba(234, 255, 25, 0.22);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(234, 255, 25, 0.12), rgba(83, 215, 255, 0.055) 58%, rgba(255, 255, 255, 0.04)),
    #0b1118;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.18);
}

.thanks-panel::after {
  content: "";
  position: absolute;
  right: -130px;
  bottom: -180px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: rgba(234, 255, 25, 0.12);
  pointer-events: none;
}

.thanks-panel p,
.thanks-panel h2,
.thanks-panel strong {
  position: relative;
  z-index: 1;
}

.thanks-panel p {
  margin: 0;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.thanks-panel h2 {
  display: grid;
  gap: 6px;
  margin: 14px 0 0;
  font-size: 56px;
  line-height: 1.08;
  font-weight: 950;
}

.thanks-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0 22px;
}

.thanks-line span {
  white-space: nowrap;
}

.thanks-panel strong {
  display: block;
  max-width: 880px;
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 18px;
  font-weight: 760;
  line-height: 1.72;
}

.page-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 34px 0 48px;
  color: #475569;
  font-size: 13px;
  font-weight: 800;
}

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

@media (max-width: 1180px) {
  :root {
    --content: min(100vw - 36px, 980px);
  }

  .site-header {
    grid-template-columns: 1fr auto;
    align-items: start;
  }

  .page-nav {
    grid-column: 1 / -1;
    justify-content: flex-start;
    overflow-x: auto;
  }

  .hero-section,
  .blueprint-layout {
    grid-template-columns: 1fr;
  }

  .hero-section {
    min-height: auto;
  }

  .hero-copy h1 {
    font-size: 60px;
  }

  .hero-sentence {
    font-size: 26px;
  }

  .section-heading h2 {
    font-size: 44px;
  }

  .system-card h3,
  .tool-card h3,
  .map-card h3,
  .risk-grid h3,
  .blueprint-main h3,
  .module-grid h3,
  .method-flow h3,
  .value-grid h3,
  .roadmap-grid h3 {
    font-size: 26px;
  }

  .hero-metrics,
  .risk-grid,
  .module-grid,
  .value-grid,
  .roadmap-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .application-grid,
  .method-flow {
    grid-template-columns: 1fr 1fr;
  }

  .module-grid article.wide {
    grid-column: span 2;
  }

  .method-flow article.wide {
    grid-column: span 2;
    grid-template-columns: none;
    grid-template-rows: auto auto minmax(54px, auto) auto;
  }

  .method-flow article.wide h3 {
    margin-top: 16px;
  }

  .method-flow article.wide p {
    margin-top: 12px;
  }

  .method-flow article.wide dl {
    margin-top: 16px;
  }

  .infrastructure-card strong,
  .version-meta b,
  .thanks-panel h2 {
    font-size: 42px;
  }
}

@media (max-width: 760px) {
  :root {
    --content: calc(100vw - 24px);
  }

  .site-header {
    top: 10px;
    margin-top: 10px;
  }

  .brand b {
    max-width: 170px;
    white-space: normal;
  }

  .header-action {
    padding: 0 12px;
  }

  .hero-section {
    gap: 28px;
    min-height: auto;
    padding-top: 44px;
    padding-bottom: 34px;
  }

  .hero-copy h1 {
    font-size: 36px;
    line-height: 1.08;
  }

  .hero-sentence {
    font-size: 22px;
  }

  .hero-metrics strong {
    font-size: 44px;
  }

  .section-heading h2 .heading-line {
    white-space: normal;
  }

  .section-heading h2 {
    font-size: 34px;
  }

  .method-title span {
    display: block;
    white-space: nowrap;
  }

  .hero-lead {
    font-size: 15px;
    line-height: 1.68;
  }

  .visual-panel {
    aspect-ratio: 2048 / 1035;
  }

  .visual-panel img {
    display: none;
  }

  .hero-metrics,
  .application-grid,
  .risk-grid,
  .module-grid,
  .method-flow,
  .value-grid,
  .version-grid,
  .roadmap-grid {
    grid-template-columns: 1fr;
  }

  .risk-section,
  .method-section,
  .version-section,
  .thanks-section {
    padding-left: 12px;
    padding-right: 12px;
  }

  .section {
    padding-top: 44px;
    padding-bottom: 46px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .section-heading > span {
    width: 48px;
    height: 48px;
    font-size: 22px;
  }

  .module-grid article.wide,
  .method-flow article.wide {
    grid-column: auto;
  }

  .system-card,
  .tool-card,
  .map-card,
  .risk-grid article,
  .value-grid article,
  .roadmap-grid article,
  .module-grid article,
  .method-flow article,
  .version-card {
    min-height: auto;
  }

  .system-card h3,
  .tool-card h3,
  .map-card h3,
  .risk-grid h3,
  .blueprint-main h3,
  .module-grid h3,
  .method-flow h3,
  .value-grid h3,
  .roadmap-grid h3 {
    font-size: 24px;
  }

  .module-grid h3 {
    margin-top: 30px;
  }

  .method-intro {
    grid-template-columns: 1fr;
  }

  .value-path i {
    display: none;
  }

  .version-card {
    padding: 24px;
  }

  .version-meta b {
    font-size: 34px;
  }

  .thanks-section {
    padding-top: 42px;
    padding-bottom: 46px;
  }

  .thanks-panel {
    padding: 28px 24px;
  }

  .thanks-panel h2 {
    display: grid;
    gap: 2px;
    font-size: 34px;
  }

  .thanks-line {
    display: block;
  }

  .thanks-line span {
    display: block;
    white-space: nowrap;
  }

  .thanks-panel strong {
    font-size: 15px;
    line-height: 1.72;
  }

  .page-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }
}

@media (max-width: 380px) {
  .hero-copy h1 {
    font-size: 32px;
  }

  .section-heading h2 {
    font-size: 30px;
  }

  .version-meta b {
    font-size: 30px;
  }

  .thanks-panel h2 {
    font-size: 30px;
  }
}