:root {
  font-family: "Noto Sans CJK SC", "Microsoft YaHei", "PingFang SC", system-ui,
    sans-serif;
  color: #17232a;
  background: #f7f7f2;
  font-size: 16px;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
}
button,
input,
select {
  font: inherit;
}
button {
  cursor: pointer;
}
[hidden] {
  display: none !important;
}
.page-frame {
  max-width: 1600px;
  margin: auto;
  background: #f7f7f2;
}
.masthead {
  height: 94px;
  padding: 0 clamp(28px, 5.2vw, 84px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #d9ddda;
}
.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  border: 1.5px solid #18262a;
  border-radius: 50%;
  font: 600 20px Georgia, serif;
  letter-spacing: -0.13em;
  padding-right: 4px;
}
.brand-mark span {
  color: #b58d57;
}
.brand-name {
  font-weight: 850;
  letter-spacing: 0.15em;
  font-size: 13px;
}
.brand-name small {
  display: block;
  font-size: 8px;
  font-weight: 650;
  letter-spacing: 0.38em;
  color: #7e8b89;
  margin-top: 5px;
}
.masthead-right {
  display: flex;
  gap: 38px;
  align-items: center;
  color: #536561;
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.16em;
}
.masthead-right span:last-child {
  color: #ad8b60;
}
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(410px, 0.88fr);
  min-height: 630px;
  background: #102025;
  color: #f5f3e9;
  overflow: hidden;
}
.hero-copy {
  padding: clamp(65px, 7.7vw, 128px) 36px 64px clamp(28px, 5.2vw, 84px);
  display: flex;
  flex-direction: column;
}
.eyebrow {
  color: #d4b482;
  font-size: 10px;
  letter-spacing: 0.18em;
  font-weight: 800;
  margin: 0 0 55px;
  display: flex;
  gap: 28px;
  align-items: center;
}
.eyebrow:before {
  content: "";
  width: 34px;
  height: 1px;
  background: #b58d57;
}
.eyebrow span {
  color: #738c89;
}
.hero h1 {
  font-size: clamp(54px, 5.5vw, 92px);
  letter-spacing: -0.065em;
  line-height: 1.19;
  font-weight: 650;
  margin: 0;
  white-space: nowrap;
}
.hero h1 em {
  font-style: normal;
  font-weight: 300;
  color: #e6e3d7;
}
.hero h1 em span,
.section-heading h2 span {
  color: #c39b60;
}
.hero-lead {
  font-size: clamp(16px, 1.3vw, 19px);
  line-height: 1.95;
  color: #bfccc8;
  max-width: 570px;
  margin: 38px 0 65px;
}
.hero-meta {
  display: flex;
  gap: 0;
  margin-top: auto;
  border-top: 1px solid #47605e;
}
.hero-meta > span {
  padding: 19px 20px 0 0;
  margin-right: 24px;
  min-width: 125px;
  color: #e8e9e0;
  font-size: 12px;
}
.hero-meta b {
  display: block;
  color: #79918d;
  font-size: 9px;
  letter-spacing: 0.15em;
  margin-bottom: 7px;
}
.hero-visual {
  position: relative;
  background: radial-gradient(
    circle at 50% 32%,
    #2d3d3b 0,
    #17282b 50%,
    #122326 100%
  );
  border-left: 1px solid #425653;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
}
.hero-visual:after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(130deg, #ffffff08, transparent 42%, #091a1c88);
  pointer-events: none;
}
.visual-label {
  position: absolute;
  top: 37px;
  left: 38px;
  right: 38px;
  display: flex;
  justify-content: space-between;
  color: #b7a17e;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.19em;
}
.visual-label i {
  font-style: normal;
  color: #849794;
}
.hero-visual svg {
  width: min(95%, 510px);
  height: auto;
  overflow: visible;
}
.orbit {
  fill: none;
  stroke: #627873;
  stroke-width: 1;
  opacity: 0.32;
}
.orbit-dim {
  opacity: 0.18;
}
.line {
  fill: none;
  stroke: #bc9968;
  stroke-width: 1.5;
}
.line-dim {
  fill: none;
  stroke: #667c75;
  stroke-width: 1;
}
.node-main {
  fill: #d4b17b;
}
.node-main-text {
  fill: #19282a;
  font: 500 43px Georgia, serif;
}
.node-selected {
  fill: #1b3031;
  stroke: #d3b078;
  stroke-width: 2;
}
.node-text {
  fill: #e5c18a;
  font: 500 20px Georgia, serif;
}
.node-muted {
  fill: #74877f;
}
.branch-label {
  fill: #9bb0aa;
  font: 700 11px system-ui, sans-serif;
  letter-spacing: 0.16em;
}
.visual-caption {
  position: absolute;
  bottom: 32px;
  left: 38px;
  right: 38px;
  display: flex;
  justify-content: space-between;
  color: #bcb7a5;
  font: 700 10px system-ui, sans-serif;
  letter-spacing: 0.17em;
}
.content-grid {
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr);
  padding: 0 clamp(28px, 5.2vw, 84px);
}
.side-index {
  border-right: 1px solid #d9ddda;
}
.side-sticky {
  position: sticky;
  top: 20px;
  padding: 76px 35px 30px 0;
}
.side-sticky > p {
  font: 750 10px system-ui, sans-serif;
  letter-spacing: 0.17em;
  color: #a3865d;
  margin: 0 0 29px;
}
.side-index a {
  display: block;
  text-decoration: none;
  color: #62726d;
  font-size: 14px;
  padding: 15px 0;
  border-bottom: 1px solid #e4e7e2;
  transition: color 0.15s;
}
.side-index a:hover {
  color: #a98350;
}
.side-index a span {
  font: 12px Georgia, serif;
  color: #aa8b61;
  margin-right: 21px;
}
.side-foot {
  margin-top: 43px;
  color: #7d8a85;
  font-size: 11px;
}
.document-body {
  min-width: 0;
  padding-left: clamp(40px, 5.5vw, 88px);
}
.document-section {
  padding: 75px 0 84px;
  border-bottom: 1px solid #d9ddda;
  scroll-margin-top: 22px;
}
.section-heading {
  margin-bottom: 41px;
}
.section-number {
  display: block;
  color: #a47d48;
  font: 800 10px system-ui, sans-serif;
  letter-spacing: 0.19em;
  margin-bottom: 22px;
}
.section-heading h2 {
  margin: 0;
  font-size: clamp(37px, 3.1vw, 51px);
  line-height: 1.2;
  letter-spacing: -0.055em;
  font-weight: 650;
}
.section-heading > p {
  color: #60716c;
  line-height: 1.8;
  margin: 18px 0 0;
  font-size: 16px;
  max-width: 720px;
}
.comparison {
  display: grid;
  grid-template-columns: 1fr 54px 1fr;
  min-height: 180px;
  align-items: stretch;
  border: 1px solid #cfd8d1;
}
.comparison > div {
  padding: 28px 32px;
}
.comparison > div:first-child {
  background: #f1f2ec;
}
.comparison-after {
  background: #e7ece4;
}
.comparison small {
  display: block;
  color: #7d8881;
  font: 700 10px system-ui, sans-serif;
  letter-spacing: 0.15em;
  margin-bottom: 23px;
}
.comparison-after small {
  color: #8d714e;
}
.comparison strong {
  font-size: 25px;
  line-height: 1.47;
  font-weight: 570;
  letter-spacing: -0.03em;
}
.compare-arrow {
  display: grid;
  place-items: center;
  background: #102025;
  color: #ddba83;
  font: 28px Georgia, serif;
}
.financial-note {
  display: flex;
  gap: 17px;
  border-left: 2px solid #b58d57;
  background: #f1ede3;
  margin-top: 25px;
  padding: 19px 23px;
  color: #5c6158;
}
.financial-note b {
  display: grid;
  place-items: center;
  border: 1px solid #b58d57;
  border-radius: 50%;
  color: #9c784a;
  width: 24px;
  height: 24px;
  flex: 0 0 24px;
  font: 700 15px Georgia, serif;
}
.financial-note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
}
.subhead {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid #cdd6cf;
  padding: 0 0 15px;
  margin: 58px 0 0;
  font-weight: 750;
  font-size: 15px;
}
.subhead span:last-child {
  font: 750 10px system-ui, sans-serif;
  letter-spacing: 0.14em;
  color: #a07f56;
}
.rule-list {
  list-style: none;
  counter-reset: rule;
  margin: 0;
  padding: 0;
}
.rule-list li {
  counter-increment: rule;
  position: relative;
  padding: 23px 0 23px 72px;
  border-bottom: 1px solid #e0e5df;
  color: #394b46;
  font-size: 15px;
  line-height: 1.9;
}
.rule-list li:before {
  content: counter(rule, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 24px;
  font: 500 22px Georgia, serif;
  color: #b28e60;
}
.scope-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.scope-list li {
  position: relative;
  padding: 19px 0 19px 33px;
  border-top: 1px solid #dce2dc;
  color: #3e504a;
  line-height: 1.85;
}
.scope-list li:before {
  content: "";
  position: absolute;
  left: 2px;
  top: 31px;
  width: 9px;
  height: 9px;
  border: 1px solid #ad8a5d;
  transform: rotate(45deg);
}
.identity-block {
  margin-top: 16px;
}
.identity-block .subhead {
  margin-top: 46px;
}
.identity-block dl {
  margin: 0;
}
.identity-block dl > div {
  display: grid;
  grid-template-columns: 205px minmax(0, 1fr);
  gap: 15px;
  padding: 18px 0;
  border-bottom: 1px solid #e0e5df;
}
.identity-block dt {
  color: #74837b;
  font-size: 13px;
}
.identity-block dd {
  margin: 0;
  overflow-wrap: anywhere;
  font: 550 13px/1.7 ui-monospace, SFMono-Regular, Consolas, monospace;
  color: #293b36;
}
.original-message {
  margin-top: 25px;
  border: 1px solid #ccd7ce;
}
.original-message summary {
  padding: 19px 23px;
  display: flex;
  justify-content: space-between;
  cursor: pointer;
  font-size: 14px;
  font-weight: 750;
}
.original-message summary span:last-child {
  font-size: 23px;
  color: #a78555;
  line-height: 0.8;
}
.original-message pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  max-height: 390px;
  overflow: auto;
  background: #eeefe9;
  padding: 24px;
  margin: 0;
  border-top: 1px solid #ccd7ce;
  font: 12px/1.85 ui-monospace, Consolas, monospace;
}
.signature-section {
  border: 0;
}
.signature-card {
  background: #fff;
  border: 1px solid #d4dcd4;
  box-shadow: 0 27px 70px #1e2e2810;
  padding: 0 clamp(22px, 3.8vw, 55px) 42px;
}
.signature-card-head {
  height: 84px;
  border-bottom: 1px solid #dce3dc;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font: 750 10px system-ui, sans-serif;
  letter-spacing: 0.17em;
  color: #8e784f;
}
.signature-card-head span:last-child {
  font: 500 24px Georgia, serif;
  letter-spacing: -0.1em;
  color: #2e4946;
  padding-right: 5px;
}
.field-label,
.check-intro {
  display: block;
  font-weight: 750;
  font-size: 12px;
  letter-spacing: 0.05em;
  margin: 29px 0 13px;
  color: #42554e;
}
.signature-card select {
  width: 100%;
  height: 54px;
  background: #f7f8f4;
  border: 1px solid #cbd6ce;
  border-radius: 0;
  color: #243831;
  padding: 0 18px;
}
.actions {
  display: flex;
  gap: 12px;
  margin: 14px 0 26px;
}
.actions button {
  flex: 1;
}
.signature-card button {
  min-height: 54px;
  border: 1px solid #142b2c;
  background: #142b2c;
  color: #fff;
  padding: 0 22px;
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.02em;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 15px;
  transition: background 0.15s;
}
.signature-card button:hover:not(:disabled) {
  background: #31504a;
}
.signature-card button.secondary {
  flex: 0 0 auto;
  background: transparent;
  color: #263f3a;
  border-color: #bfcfc3;
}
.signature-card button.secondary:hover {
  background: #e9eee8;
}
.signature-card button:disabled {
  opacity: 0.47;
  cursor: not-allowed;
}
.readback {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.readback > div {
  background: #f2f5f0;
  padding: 18px;
  min-width: 0;
}
.readback small {
  display: block;
  font: 750 9px system-ui, sans-serif;
  letter-spacing: 0.14em;
  color: #82918a;
  margin-bottom: 10px;
}
.readback strong {
  display: block;
  overflow-wrap: anywhere;
  font: 550 12px/1.6 ui-monospace, Consolas, monospace;
  color: #2d4941;
}
.signature-divider {
  height: 1px;
  background: #dce3dc;
  margin: 31px 0;
}
.check-intro {
  margin: 0 0 18px;
}
.check {
  display: flex;
  gap: 13px;
  align-items: flex-start;
  font-size: 14px;
  color: #40524b;
  line-height: 1.7;
  margin: 12px 0;
  cursor: pointer;
}
.check input {
  width: 19px;
  height: 19px;
  flex: 0 0 19px;
  margin: 3px 0 0;
  accent-color: #aa8250;
}
.signature-card .sign-button {
  width: 100%;
  margin-top: 32px;
  background: #b38d57;
  border-color: #b38d57;
  color: #112628;
  font-size: 14px;
}
.signature-card .sign-button:hover:not(:disabled) {
  background: #cfaa73;
}
.status {
  margin: 18px 0 0;
  border-left: 2px solid #ad8a5d;
  padding: 11px 15px;
  background: #f4f4ef;
  color: #4b5f57;
  font-size: 12px;
  line-height: 1.7;
}
.status.error {
  border-color: #b45248;
  color: #8c3c35;
  background: #f9eeeb;
}
.status.success {
  border-color: #628a71;
  color: #2b6542;
  background: #edf5ed;
}
.receipt {
  margin-top: 21px;
  background: #edf4ec;
  padding: 20px;
  border: 1px solid #b9d0bc;
}
.receipt strong {
  font-size: 14px;
}
.receipt p {
  font-size: 13px;
  line-height: 1.8;
  color: #516c57;
}
.receipt button {
  margin-top: 15px;
}
.security-caption {
  margin: 24px 0 0;
  color: #7c8981;
  font-size: 12px;
  line-height: 1.7;
}
.footer {
  background: #102025;
  color: #b0bcb6;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 42px clamp(28px, 5.2vw, 84px);
}
.footer .brand-mark {
  border-color: #b0bcb6;
}
.footer .brand-name {
  color: #f2f2e9;
}
.footer p {
  font-size: 12px;
  margin: 0 0 8px;
}
.footer > div:last-child {
  text-align: right;
}
.footer > div:last-child span {
  font: 700 9px system-ui, sans-serif;
  letter-spacing: 0.13em;
  color: #778b84;
}
a:focus-visible,
button:focus-visible,
select:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid #c69a5f;
  outline-offset: 3px;
}
@media (max-width: 1050px) {
  .hero {
    grid-template-columns: 1fr 0.8fr;
    min-height: 570px;
  }
  .hero-copy {
    padding-top: 74px;
  }
  .hero h1 {
    font-size: clamp(47px, 5.5vw, 70px);
  }
  .content-grid {
    grid-template-columns: 190px;
  }
  .document-body {
    padding-left: 36px;
  }
  .comparison strong {
    font-size: 20px;
  }
}
@media (max-width: 720px) {
  .masthead {
    height: 74px;
    padding: 0 20px;
  }
  .brand-mark {
    width: 41px;
    height: 41px;
    font-size: 17px;
  }
  .brand-name {
    font-size: 11px;
  }
  .masthead-right span:first-child {
    display: none;
  }
  .masthead-right {
    font-size: 9px;
  }
  .hero {
    display: block;
    min-height: 0;
  }
  .hero-copy {
    padding: 60px 25px 47px;
  }
  .eyebrow {
    font-size: 8px;
    gap: 10px;
    margin-bottom: 39px;
  }
  .eyebrow:before {
    width: 21px;
  }
  .eyebrow span {
    display: none;
  }
  .hero h1 {
    font-size: clamp(46px, 12vw, 67px);
  }
  .hero-lead {
    font-size: 15px;
    margin: 27px 0 42px;
  }
  .hero-meta {
    gap: 0;
    flex-wrap: wrap;
  }
  .hero-meta > span {
    min-width: 0;
    margin-right: 15px;
    padding-right: 0;
    font-size: 10px;
  }
  .hero-meta b {
    font-size: 8px;
  }
  .hero-visual {
    height: 345px;
    border-left: 0;
    border-top: 1px solid #425653;
  }
  .hero-visual svg {
    width: 300px;
    max-height: 320px;
  }
  .visual-label {
    top: 18px;
    left: 20px;
    right: 20px;
    font-size: 8px;
  }
  .visual-caption {
    bottom: 15px;
    left: 20px;
    right: 20px;
    font-size: 8px;
  }
  .content-grid {
    display: block;
    padding: 0 22px;
  }
  .side-index {
    display: none;
  }
  .document-body {
    padding: 0;
  }
  .document-section {
    padding: 61px 0 67px;
  }
  .section-heading {
    margin-bottom: 31px;
  }
  .section-heading h2 {
    font-size: 38px;
  }
  .section-heading > p {
    font-size: 14px;
  }
  .comparison {
    grid-template-columns: 1fr 30px 1fr;
    min-height: 150px;
  }
  .comparison > div {
    padding: 19px 14px;
  }
  .comparison small {
    font-size: 8px;
    line-height: 1.6;
    margin-bottom: 16px;
  }
  .comparison strong {
    font-size: 16px;
  }
  .financial-note {
    padding: 15px;
  }
  .financial-note p {
    font-size: 12px;
  }
  .rule-list li {
    padding-left: 49px;
    font-size: 13px;
  }
  .rule-list li:before {
    font-size: 18px;
  }
  .subhead {
    margin-top: 45px;
  }
  .identity-block dl > div {
    display: block;
  }
  .identity-block dt {
    margin-bottom: 8px;
  }
  .readback {
    grid-template-columns: 1fr;
  }
  .actions {
    display: block;
  }
  .actions button {
    width: 100%;
    margin-bottom: 9px;
  }
  .signature-card button.secondary {
    width: 100%;
  }
  .signature-card-head {
    height: 68px;
  }
  .signature-card {
    padding-bottom: 25px;
  }
  .footer {
    padding: 33px 22px;
    display: block;
  }
  .footer > div:last-child {
    text-align: left;
    margin-top: 29px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
  }
}
.brand-mark {
  position: relative;
  white-space: nowrap;
  letter-spacing: -0.17em;
  padding-right: 5px;
}
.brand-mark:after {
  content: "";
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #b58d57;
  bottom: 8px;
  left: calc(50% - 2px);
}