:root {
  --paper: #f2efe7;
  --ink: #171817;
  --muted: #686963;
  --line: #b9b8b0;
  --red: #d33e2f;
  --red-dark: #9f2d23;
  --dark: #171817;
  --soft: #e5e1d8;
  --max: 1180px;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
}
button,
input,
select {
  font: inherit;
}
button {
  border-radius: 0;
}
.site-head {
  position: absolute;
  inset: 0 0 auto;
  z-index: 10;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(24px, calc((100vw - var(--max)) / 2));
  color: #f2efe7;
  border-bottom: 1px solid rgba(255, 255, 255, 0.25);
}
.wordmark {
  color: inherit;
  text-decoration: none;
  font:
    700 12px ui-monospace,
    SFMono-Regular,
    Menlo,
    monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.study-state {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 12px;
}
.study-state span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--red);
}
.hero {
  position: relative;
  min-height: 780px;
  display: flex;
  align-items: center;
  background: #181918 url("assets/hero-network.webp") center/cover no-repeat;
  color: #f4f1e9;
}
.hero:after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(16, 17, 16, 0.96) 0%,
    rgba(16, 17, 16, 0.84) 37%,
    rgba(16, 17, 16, 0.14) 72%,
    rgba(16, 17, 16, 0.02) 100%
  );
}
.hero-copy {
  position: relative;
  z-index: 1;
  width: min(var(--max), 100%);
  margin: auto;
  padding: 120px 24px 75px;
}
.kicker,
.overline,
.result header > p,
.participation-head > p {
  font:
    700 12px ui-monospace,
    SFMono-Regular,
    Menlo,
    monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #ef6a5e;
}
.hero h1 {
  max-width: 980px;
  margin: 22px 0 26px;
  font-size: clamp(52px, 5.8vw, 84px);
  font-weight: 650;
  line-height: 0.99;
  letter-spacing: -0.05em;
  text-wrap: balance;
}
.hero h1 span {
  color: #ef5447;
}
.lead {
  max-width: 670px;
  margin: 0;
  color: #c9c8c1;
  font-size: 20px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 34px;
}
.primary-action {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  min-width: 190px;
  padding: 15px 18px;
  background: var(--red);
  color: white;
  text-decoration: none;
  font-weight: 700;
  transition: 0.18s;
}
.primary-action:hover {
  background: #ec5447;
  transform: translateY(-2px);
}
.hero-meta {
  font-size: 13px;
  color: #aaa9a3;
}
.hero-proof {
  display: flex;
  gap: 0;
  margin-top: 80px;
  border-top: 1px solid rgba(255, 255, 255, 0.25);
  width: max-content;
}
.hero-proof span {
  padding: 14px 26px 0 0;
  margin-right: 26px;
  border-right: 1px solid rgba(255, 255, 255, 0.25);
  font:
    12px ui-monospace,
    SFMono-Regular,
    Menlo,
    monospace;
  color: #b8b7b1;
}
.hero-proof span:last-child {
  border: 0;
}
.value-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: var(--max);
  margin: auto;
  border-left: 1px solid var(--line);
}
.value-strip div {
  display: flex;
  gap: 20px;
  align-items: baseline;
  padding: 30px 24px;
  border-right: 1px solid var(--line);
}
.value-strip b {
  font:
    700 13px ui-monospace,
    monospace;
  color: var(--red);
}
.value-strip span {
  font-weight: 650;
}
.value-strip small {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font:
    11px ui-monospace,
    SFMono-Regular,
    Menlo,
    monospace;
}
.assessment {
  padding: 110px max(24px, calc((100vw - var(--max)) / 2));
  border-top: 1px solid var(--line);
}
.section-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 55px;
  margin-bottom: 55px;
}
.section-head .overline {
  grid-column: 1;
}
.section-head h2 {
  grid-column: 1;
  margin: 5px 0 0;
  font-size: clamp(42px, 5vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.045em;
}
.section-head .sub {
  grid-column: 2;
  grid-row: 1/3;
  align-self: end;
  max-width: 430px;
  color: var(--muted);
}
.assessment-grid {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 55px;
  align-items: start;
}
.form-visual {
  position: sticky;
  top: 24px;
  height: 630px;
  overflow: hidden;
  background: #dad5ca;
}
.form-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.8) contrast(1.04);
}
.form-visual:after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(17, 18, 17, 0.84));
}
.form-visual > div {
  position: absolute;
  z-index: 1;
  left: 25px;
  right: 25px;
  bottom: 25px;
  color: white;
}
.form-visual span {
  font:
    700 12px ui-monospace,
    monospace;
  color: #f46b5e;
}
.form-visual p {
  margin: 8px 0 0;
  font-size: 14px;
}
.step-meter {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: center;
  margin-bottom: 38px;
}
.step-meter > span {
  font:
    700 12px ui-monospace,
    monospace;
}
.step-meter > div {
  height: 2px;
  background: var(--line);
}
.step-meter i {
  display: block;
  width: 16.66%;
  height: 100%;
  background: var(--red);
  transition: width 0.25s;
}
#riskForm {
  min-height: 610px;
  display: flex;
  flex-direction: column;
}
fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}
fieldset[hidden] {
  display: none;
}
legend {
  width: 100%;
  padding: 0 0 25px;
  font-size: clamp(25px, 3vw, 38px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}
legend > span {
  display: block;
  margin-bottom: 13px;
  color: var(--red);
  font:
    700 13px ui-monospace,
    monospace;
}
.question-note {
  max-width: 650px;
  margin: -10px 0 24px;
  color: var(--muted);
  font-size: 14px;
}
.choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.choices.compact {
  grid-template-columns: 1fr 1fr;
}
.choices label {
  position: relative;
}
.choices input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.choices label span {
  display: flex;
  min-height: 62px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.28);
  cursor: pointer;
  transition: 0.16s;
}
.choices label span:hover {
  border-color: var(--ink);
  background: rgba(255, 255, 255, 0.55);
}
.choices input:focus-visible + span {
  outline: 3px solid rgba(211, 62, 47, 0.22);
  outline-offset: 2px;
}
.choices input:checked + span {
  background: var(--ink);
  border-color: var(--ink);
  color: white;
}
.choices.check {
  grid-template-columns: repeat(3, 1fr);
}
.choices.check input:checked + span {
  background: var(--soft);
  color: var(--ink);
  border-color: var(--ink);
}
.form-error {
  margin-top: 20px;
  color: var(--red-dark);
  font-weight: 700;
}
.step-actions {
  display: flex;
  gap: 10px;
  margin-top: auto;
  padding-top: 35px;
  border-top: 1px solid var(--line);
}
.step-actions button {
  padding: 14px 22px;
  border: 1px solid var(--ink);
  background: transparent;
  cursor: pointer;
  font-weight: 700;
}
.step-actions #nextStep,
.step-actions .submit-risk {
  margin-left: auto;
  background: var(--red);
  border-color: var(--red);
  color: white;
}
.step-actions button:hover {
  transform: translateY(-1px);
}
.result {
  position: relative;
  padding: 105px max(24px, calc((100vw - var(--max)) / 2));
  background: #171817 url("assets/result-atlas.webp") center/cover no-repeat;
  color: white;
}
.result:before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(18, 19, 18, 0.97) 0%,
    rgba(18, 19, 18, 0.82) 55%,
    rgba(18, 19, 18, 0.28) 100%
  );
}
.result > * {
  position: relative;
}
.result header {
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.25);
}
.result-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 25px;
}
.result-heading h2 {
  margin: 8px 0;
  font-size: clamp(56px, 8vw, 112px);
  line-height: 1;
  letter-spacing: -0.05em;
}
.score {
  display: flex;
  align-items: baseline;
}
.score b {
  font:
    600 clamp(58px, 9vw, 128px)/1 ui-monospace,
    monospace;
}
.score span {
  font:
    13px ui-monospace,
    monospace;
  color: #aaa;
}
.result-meaning {
  max-width: 650px;
  color: #c8c8c2;
}
.result-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 760px;
  margin-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.24);
  border-bottom: 1px solid rgba(255, 255, 255, 0.24);
}
.result-meta span {
  display: grid;
  gap: 4px;
  padding: 15px 18px 15px 0;
}
.result-meta span + span {
  padding-left: 18px;
  border-left: 1px solid rgba(255, 255, 255, 0.24);
}
.result-meta small {
  color: #92928d;
  font:
    11px ui-monospace,
    SFMono-Regular,
    Menlo,
    monospace;
}
.result-meta b {
  font-size: 15px;
}
.result-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  padding: 50px 0;
}
.result-columns h3 {
  font-size: 16px;
}
.result-columns ul {
  list-style: none;
  padding: 0;
  margin: 22px 0;
}
.result-columns li {
  padding: 13px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  color: #d2d2cc;
}
.result-columns li strong {
  display: block;
  color: white;
}
.result-columns li strong small {
  display: block;
  margin: 5px 0 0 44px;
  color: #92928d;
  font-size: 12px;
  font-weight: 400;
}
.result-columns li em {
  display: inline-flex;
  min-width: 34px;
  margin-right: 10px;
  font:
    700 13px ui-monospace,
    SFMono-Regular,
    Menlo,
    monospace;
  font-style: normal;
}
.result-columns li .risk-up {
  color: #ff7468;
}
.result-columns li .risk-down {
  color: #9cc9b6;
}
.result-columns li .risk-flat {
  color: #a6a59f;
}
.secondary-factors {
  margin-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}
.secondary-factors summary {
  padding: 16px 0;
  color: #c8c8c2;
  cursor: pointer;
  font-size: 13px;
}
.secondary-factors ul {
  margin-top: 0;
}
.peer-panel {
  display: grid;
  grid-template-columns: 0.8fr 0.8fr 1.4fr;
  gap: 38px;
  align-items: end;
  margin: 12px 0 50px;
  padding: 34px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}
.peer-panel header {
  padding: 0;
  border: 0;
}
.peer-panel header p {
  margin: 0 0 8px;
  color: #aaa9a3;
  font-size: 13px;
}
.peer-panel h3 {
  margin: 0;
  font-size: 28px;
}
.peer-panel h3 b,
.peer-rate b {
  color: #ff675a;
  font:
    650 54px/1 ui-monospace,
    SFMono-Regular,
    Menlo,
    monospace;
}
.peer-rate {
  display: grid;
  gap: 8px;
}
.peer-rate span {
  color: #c8c8c2;
  font-size: 13px;
}
.peer-note p {
  margin: 0 0 10px;
  color: #e4e2db;
}
.peer-note small {
  display: block;
  color: #aaa9a3;
  line-height: 1.6;
}
.result-caveat {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 25px;
  padding: 22px 0;
  border-top: 1px solid var(--red);
  color: #efaca5;
}
.result-caveat p {
  margin: 0;
  max-width: 720px;
}
.findings {
  max-width: var(--max);
  margin: auto;
  padding: 110px 24px;
}
.findings-head {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 60px;
  margin-bottom: 65px;
}
.findings-head .overline {
  grid-column: 1/-1;
  margin: 0;
}
.findings-head h2 {
  margin: 0;
  font-size: clamp(42px, 5vw, 70px);
  line-height: 1.03;
  letter-spacing: -0.045em;
}
.findings-head > p:last-child {
  align-self: end;
  margin: 0;
  color: var(--muted);
}
.finding {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 70px;
  align-items: center;
  min-height: 310px;
  padding: 52px 0;
  border-top: 1px solid var(--ink);
}
.finding:last-child {
  border-bottom: 1px solid var(--ink);
}
.finding-copy > span {
  color: var(--red);
  font:
    700 12px ui-monospace,
    SFMono-Regular,
    Menlo,
    monospace;
}
.finding-copy h3 {
  max-width: 540px;
  margin: 12px 0 16px;
  font-size: clamp(27px, 3vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.025em;
}
.finding-copy p {
  max-width: 560px;
  margin: 0;
  color: var(--muted);
}
.plain-stat {
  display: block;
  max-width: 540px;
  margin-top: 16px;
  padding-left: 13px;
  border-left: 2px solid var(--red);
  color: var(--ink);
  font-size: 13px;
  line-height: 1.65;
}
.finding svg {
  width: 100%;
  color: var(--ink);
}
.finding svg line {
  stroke: currentColor;
  stroke-width: 1;
}
.finding svg .reference {
  stroke: var(--muted);
  stroke-dasharray: 4 5;
}
.finding svg .interval {
  stroke: var(--red);
  stroke-width: 5;
}
.finding svg circle {
  fill: var(--red);
}
.finding svg text {
  fill: var(--muted);
  font:
    13px ui-monospace,
    SFMono-Regular,
    Menlo,
    monospace;
}
.finding svg .chart-value {
  fill: var(--ink);
  font-size: 20px;
  font-weight: 700;
}
.compact-evidence {
  list-style: none;
  margin: -8px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.compact-evidence li {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}
.compact-evidence span {
  color: var(--red-dark);
  font-size: 12px;
  text-align: right;
}
.null-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.null-list li {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}
.null-list span {
  color: var(--muted);
  font:
    13px ui-monospace,
    SFMono-Regular,
    Menlo,
    monospace;
}
.survivor-list li {
  align-items: center;
}
.survivor-list b small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 400;
}
.survivor-list span {
  color: var(--red-dark);
  font-weight: 700;
}
.participation {
  max-width: var(--max);
  margin: auto;
  padding: 105px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 65px;
  border-top: 1px solid var(--line);
}
.participation-head h2 {
  margin: 8px 0 20px;
  font-size: clamp(40px, 4.6vw, 67px);
  line-height: 1.04;
  letter-spacing: -0.04em;
}
.participation-head > p:last-child {
  color: var(--muted);
  max-width: 530px;
}
.survey-qr {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 28px;
  align-items: center;
  align-self: start;
  padding: 24px;
  border: 1px solid var(--ink);
  color: var(--ink);
  text-decoration: none;
}
.survey-qr img {
  width: 190px;
  height: 190px;
  background: white;
}
.survey-qr span {
  display: grid;
  gap: 8px;
}
.survey-qr b {
  font-size: 22px;
}
.survey-qr small {
  color: var(--muted);
}
.consent-choice,
#researchForm {
  display: none;
}
.consent-choice {
  align-self: start;
  border-top: 2px solid var(--ink);
}
.consent-choice label {
  position: relative;
  display: block;
  border-bottom: 1px solid var(--line);
}
.consent-choice input {
  position: absolute;
  opacity: 0;
}
.consent-choice span {
  display: flex;
  justify-content: space-between;
  gap: 25px;
  padding: 25px 5px;
  cursor: pointer;
}
.consent-choice small {
  color: var(--muted);
}
.consent-choice input:checked + span {
  color: var(--red);
}
.consent-choice input:checked + span:after {
  content: "已选择";
  font:
    11px ui-monospace,
    monospace;
}
.consent-choice input:focus-visible + span {
  outline: 3px solid rgba(211, 62, 47, 0.22);
}
#researchForm {
  grid-column: 1/-1;
  padding-top: 45px;
  border-top: 1px solid var(--ink);
}
.privacy-notice {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 30px;
  padding: 26px;
  background: var(--soft);
}
.privacy-notice ul {
  margin: 0;
  padding-left: 20px;
}
.two-up,
.google-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin: 28px 0;
}
.google-fields {
  grid-template-columns: repeat(3, 1fr);
  padding: 25px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.select-field {
  display: grid;
  gap: 8px;
  font-weight: 700;
}
.select-field select {
  width: 100%;
  padding: 13px;
  background: white;
  border: 1px solid var(--line);
  color: var(--ink);
}
.consent-check {
  display: flex;
  gap: 12px;
  align-items: start;
  max-width: 780px;
  margin-top: 30px;
}
.consent-check input {
  margin-top: 6px;
}
.send-research {
  margin-top: 30px;
  padding: 15px 24px;
  border: 0;
  background: var(--red);
  color: white;
  font-weight: 700;
  cursor: pointer;
}
.submit-status {
  color: var(--muted);
}
.method-note {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 70px;
  padding: 75px max(24px, calc((100vw - var(--max)) / 2));
  background: var(--soft);
}
.method-note h2 {
  margin: 0;
  font-size: 35px;
}
.method-body p {
  margin: 0;
  padding: 13px 0;
  border-top: 1px solid var(--line);
}
footer {
  display: flex;
  justify-content: space-between;
  padding: 25px max(24px, calc((100vw - var(--max)) / 2));
  background: var(--ink);
  color: #b9b9b3;
  font-size: 12px;
}
footer p {
  margin: 0;
}
@media (max-width: 900px) {
  .hero:after {
    background: rgba(16, 17, 16, 0.75);
  }
  .value-strip {
    grid-template-columns: 1fr;
  }
  .value-strip div {
    border-bottom: 1px solid var(--line);
  }
  .section-head {
    grid-template-columns: 1fr;
  }
  .section-head .sub {
    grid-column: 1;
    grid-row: auto;
  }
  .assessment-grid {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 30px;
  }
  .participation {
    grid-template-columns: 1fr;
  }
  .result-columns {
    gap: 35px;
  }
  .result-meta {
    max-width: none;
  }
  .peer-panel {
    grid-template-columns: 1fr 1fr;
  }
  .peer-note {
    grid-column: 1/-1;
  }
  .finding {
    gap: 35px;
  }
  .google-fields {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 680px) {
  .site-head {
    height: 58px;
    padding: 0 17px;
  }
  .study-state {
    font-size: 11px;
  }
  .hero {
    min-height: 690px;
    background-position: 66% center;
  }
  .hero:after {
    background: linear-gradient(
      180deg,
      rgba(16, 17, 16, 0.8),
      rgba(16, 17, 16, 0.9)
    );
  }
  .hero-copy {
    padding: 105px 18px 55px;
  }
  .hero h1 {
    font-size: 12vw;
    letter-spacing: -0.035em;
  }
  .lead {
    font-size: 17px;
  }
  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }
  .hero-proof {
    width: 100%;
    flex-wrap: wrap;
    margin-top: 55px;
  }
  .hero-proof span {
    padding-top: 11px;
  }
  .assessment {
    padding: 75px 18px;
  }
  .section-head {
    gap: 10px;
  }
  .section-head h2 {
    font-size: 46px;
  }
  .assessment-grid {
    grid-template-columns: 1fr;
  }
  .form-visual {
    position: relative;
    top: auto;
    height: 220px;
  }
  .form-visual img {
    object-position: center 58%;
  }
  #riskForm {
    min-height: 540px;
  }
  .choices,
  .choices.compact {
    grid-template-columns: 1fr;
  }
  .result {
    padding: 75px 18px;
    background-position: 67% center;
  }
  .result-heading {
    align-items: flex-start;
    flex-direction: column;
  }
  .result-columns {
    grid-template-columns: 1fr;
  }
  .result-meta {
    grid-template-columns: 1fr;
  }
  .result-meta span + span {
    padding-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.24);
    border-left: 0;
  }
  .peer-panel {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .peer-note {
    grid-column: auto;
  }
  .result-caveat {
    grid-template-columns: 1fr;
  }
  .findings {
    padding: 75px 18px;
  }
  .findings-head,
  .finding {
    grid-template-columns: 1fr;
  }
  .findings-head {
    gap: 20px;
    margin-bottom: 45px;
  }
  .finding {
    gap: 25px;
    padding: 44px 0;
  }
  .compact-evidence li,
  .null-list li {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }
  .compact-evidence span {
    text-align: left;
  }
  .participation {
    padding: 75px 18px;
  }
  .survey-qr {
    grid-template-columns: 130px 1fr;
    gap: 18px;
    padding: 16px;
  }
  .survey-qr img {
    width: 130px;
    height: 130px;
  }
  .consent-choice span {
    flex-direction: column;
    gap: 4px;
  }
  .consent-choice input:checked + span:after {
    position: absolute;
    right: 5px;
    top: 26px;
  }
  .privacy-notice {
    grid-template-columns: 1fr;
  }
  .two-up {
    grid-template-columns: 1fr;
  }
  .choices.check {
    grid-template-columns: 1fr 1fr;
  }
  .method-note {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 60px 18px;
  }
  footer {
    padding: 22px 18px;
    flex-direction: column;
    gap: 4px;
  }
}