/* =========================================================
   오상신경외과 — 뇌신경 질환 가이드
   Editorial system for Parkinson / Cerebral infarction / Brain fog
   ========================================================= */

:root {
  --rp-ink: #22251e;
  --rp-ink-soft: #5e6257;
  --rp-olive: #515c3e;
  --rp-olive-deep: #293023;
  --rp-olive-pale: #dfe4d6;
  --rp-rust: #9d5545;
  --rp-sand: #c7b7a3;
  --rp-paper: #f4f0e8;
  --rp-paper-light: #faf8f3;
  --rp-white: #fff;
  --rp-line: rgba(34, 37, 30, 0.16);
  --rp-line-light: rgba(255, 255, 255, 0.16);
  --rp-unknown: #73766e;
  --rp-brainfog: #5d6e77;
}

html {
  scroll-behavior: smooth;
}

body.research-page {
  overflow-x: hidden;
  background: var(--rp-paper-light);
  color: var(--rp-ink);
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
}

.research-page main {
  overflow: clip;
}

.research-page a {
  text-underline-offset: 0.22em;
}

.rp-skip {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 20000;
  padding: 12px 18px;
  background: var(--rp-olive-deep);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  transition: top 0.2s ease;
}

.rp-skip:focus {
  top: 0;
}

.rp-wrap {
  width: min(calc(100% - 48px), 1240px);
  margin-inline: auto;
}

.rp-wrap--narrow {
  width: min(calc(100% - 48px), 900px);
  margin-inline: auto;
}

.rp-eyebrow {
  display: flex;
  gap: 12px;
  align-items: center;
  margin: 0 0 20px;
  color: var(--rp-olive);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.2em;
  line-height: 1.5;
  text-transform: uppercase;
}

.rp-eyebrow::before {
  width: 32px;
  height: 1px;
  background: currentColor;
  content: "";
}

.rp-eyebrow--light {
  color: #d9cbb8;
}

.rp-heading {
  max-width: 760px;
  margin: 0;
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  font-size: clamp(32px, 4.4vw, 56px);
  font-weight: 600;
  letter-spacing: -0.055em;
  line-height: 1.28;
  word-break: keep-all;
}

.rp-lead {
  max-width: 720px;
  margin: 24px 0 0;
  color: var(--rp-ink-soft);
  font-size: clamp(16px, 1.55vw, 19px);
  letter-spacing: -0.02em;
  line-height: 1.9;
  word-break: keep-all;
}

.rp-button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 22px;
  border: 1px solid var(--rp-olive);
  background: var(--rp-olive);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease;
}

.rp-button:hover {
  background: var(--rp-olive-deep);
  border-color: var(--rp-olive-deep);
  transform: translateY(-2px);
}

.rp-button--quiet {
  background: transparent;
  color: var(--rp-ink);
}

.rp-button--quiet:hover {
  color: #fff;
}

.rp-button--light {
  border-color: #fff;
  background: #fff;
  color: var(--rp-olive-deep);
}

.rp-button--light:hover {
  border-color: var(--rp-paper);
  background: var(--rp-paper);
  color: var(--rp-olive-deep);
}

.rp-button--line-light {
  border-color: rgba(255, 255, 255, 0.45);
  background: transparent;
  color: #fff;
}

.rp-button--line-light:hover {
  border-color: #fff;
  background: #fff;
  color: var(--rp-olive-deep);
}

/* Hero — conversion-led landing treatment aligned with the main Osang pages */
.rp-hero {
  position: relative;
  min-height: min(820px, calc(100dvh - 82px));
  display: flex;
  align-items: center;
  padding: clamp(92px, 10vw, 148px) 0 clamp(82px, 9vw, 132px);
  border-bottom: 0;
  background:
    radial-gradient(circle at 76% 28%, rgba(199, 183, 163, 0.18), transparent 34%),
    linear-gradient(125deg, #1d2419 0%, #303a28 52%, #20271c 100%);
  color: #fff;
}

.rp-hero::before {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 88px 88px;
  content: "";
  mask-image: linear-gradient(to bottom, transparent, #000 22%, #000 78%, transparent);
  pointer-events: none;
}

.rp-hero::after {
  position: absolute;
  inset: auto 0 0;
  height: 34%;
  background: linear-gradient(to top, rgba(7, 10, 6, 0.3), transparent);
  content: "";
  pointer-events: none;
}

.rp-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(340px, 0.84fr);
  gap: clamp(56px, 8vw, 112px);
  align-items: center;
}

.rp-hero__copy {
  position: relative;
  z-index: 2;
  padding-top: 28px;
}

.rp-hero h1 {
  max-width: 760px;
  margin: 0;
  font-family: "Noto Serif KR", "Pretendard", serif;
  font-size: clamp(44px, 5.8vw, 74px);
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 1.24;
  word-break: keep-all;
  text-wrap: balance;
}

.rp-hero__answer {
  max-width: 690px;
  margin: 30px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: clamp(16px, 1.6vw, 19px);
  letter-spacing: -0.02em;
  line-height: 1.9;
  word-break: keep-all;
}

.rp-hero .rp-eyebrow {
  color: #d8c4a9;
}

.rp-hero__status span {
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.07);
  color: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(10px);
}

.rp-hero .rp-button {
  border-color: #c3a990;
  border-radius: 999px;
  background: #c3a990;
  color: #26301a;
  box-shadow: 0 16px 38px rgba(7, 10, 6, 0.2);
}

.rp-hero .rp-button:hover {
  border-color: #ddc9ae;
  background: #ddc9ae;
  color: #1d2419;
}

.rp-hero .rp-button--quiet {
  border-color: transparent;
  background: transparent;
  box-shadow: none;
  color: rgba(255, 255, 255, 0.82);
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.32);
}

.rp-hero .rp-button--quiet:hover {
  color: #fff;
  transform: translateY(-1px);
}

.rp-hero__media {
  z-index: 1;
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 35px 90px rgba(4, 7, 3, 0.28);
  backdrop-filter: blur(5px);
}

.rp-hero__media img {
  filter: saturate(0.72) contrast(0.95);
}

.rp-hero__media figcaption,
.rp-hero__figure-no {
  color: rgba(255, 255, 255, 0.64);
}

/* Trust strip — mirrors the proof/strength rhythm of the Osang home landing */
.rp-trust-strip {
  position: relative;
  z-index: 5;
  border-bottom: 1px solid var(--rp-line);
  background: #fff;
}

.rp-trust-strip__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.rp-trust-strip p {
  position: relative;
  min-height: 142px;
  margin: 0;
  padding: 30px clamp(24px, 3vw, 44px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.rp-trust-strip p + p {
  border-left: 1px solid var(--rp-line);
}

.rp-trust-strip p > span {
  position: absolute;
  top: 22px;
  right: 24px;
  color: rgba(81, 92, 62, 0.3);
  font-family: "Playfair Display", Georgia, serif;
  font-size: 25px;
  font-style: italic;
}

.rp-trust-strip strong {
  color: var(--rp-ink);
  font-family: "Noto Serif KR", "Pretendard", serif;
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.5;
  word-break: keep-all;
}

.rp-trust-strip small {
  margin-top: 7px;
  color: var(--rp-ink-soft);
  font-size: 13px;
  line-height: 1.6;
  word-break: keep-all;
}

.rp-trust-strip--urgent p:first-child {
  background: #f8efec;
}

.rp-trust-strip--urgent p:first-child > span,
.rp-trust-strip--urgent p:first-child strong {
  color: var(--rp-rust);
}

.rp-trust-strip--fog p:first-child {
  background: #eef2f2;
}

.rp-hero__status {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--rp-line);
  color: var(--rp-ink-soft);
  font-size: 13px;
}

.rp-hero__status span {
  display: inline-flex;
  gap: 9px;
  align-items: center;
}

.rp-hero__status span::before {
  width: 6px;
  height: 6px;
  background: var(--rp-rust);
  content: "";
  transform: rotate(45deg);
}

.rp-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.rp-hero__media {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0 0 34px 34px;
}

.rp-hero__media::before {
  position: absolute;
  top: 38px;
  bottom: 0;
  left: 0;
  width: 1px;
  background: var(--rp-line);
  content: "";
}

.rp-hero__media img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  background: var(--rp-paper);
  filter: saturate(0.92) contrast(1.02);
  mix-blend-mode: multiply;
}

.rp-hero__figure-no {
  position: absolute;
  top: 0;
  left: 0;
  color: var(--rp-rust);
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  font-size: 13px;
  letter-spacing: 0.12em;
  writing-mode: vertical-rl;
}

.rp-hero__media figcaption {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 14px;
  color: var(--rp-ink-soft);
  font-size: 11px;
  line-height: 1.55;
}

.rp-hero__media figcaption span:last-child {
  text-align: right;
}

/* Emergency notice */
.rp-alert {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  margin: 0 0 56px;
  padding: 17px 0;
  border-top: 1px solid rgba(157, 85, 69, 0.55);
  border-bottom: 1px solid rgba(157, 85, 69, 0.55);
  color: var(--rp-ink);
}

.rp-alert__icon {
  color: var(--rp-rust);
  font-size: 19px;
}

.rp-alert strong {
  display: block;
  color: var(--rp-rust);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.55;
}

.rp-alert p {
  margin: 3px 0 0;
  color: var(--rp-ink-soft);
  font-size: 13px;
  line-height: 1.6;
}

.rp-alert a {
  color: var(--rp-rust);
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}

/* Reading index */
.rp-index {
  background: var(--rp-white);
  border-bottom: 1px solid var(--rp-line);
}

.rp-index__inner {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  align-items: stretch;
}

.rp-index__title {
  display: flex;
  align-items: center;
  margin: 0;
  padding: 24px 28px 24px 0;
  border-right: 1px solid var(--rp-line);
  color: var(--rp-ink-soft);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

.rp-index__links a {
  display: flex;
  min-height: 78px;
  gap: 12px;
  align-items: center;
  padding: 18px 22px;
  border-right: 1px solid var(--rp-line);
  color: var(--rp-ink);
  font-size: 14px;
  font-weight: 700;
  transition:
    background-color 0.2s ease,
    color 0.2s ease;
}

.rp-index__links a:last-child {
  border-right: 0;
}

.rp-index__links a span {
  color: var(--rp-rust);
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  font-size: 11px;
  font-weight: 600;
}

.rp-index__links a:hover {
  background: var(--rp-paper-light);
  color: var(--rp-olive);
}

.rp-index__links a[aria-current="location"] {
  color: var(--rp-olive);
  background: var(--rp-paper-light);
  box-shadow: inset 0 -3px 0 var(--rp-rust);
}

.rp-clinical-callout,
.rp-danger-callout {
  margin-top: 36px;
  padding: 24px 28px;
  border-left: 4px solid var(--rp-rust);
  background: var(--rp-white);
  font-size: 17px;
  line-height: 1.75;
}

.rp-danger-callout {
  background: #fff7f3;
}

.rp-danger-callout p { margin: 8px 0 16px; }
.rp-danger-callout a,
.rp-button--emergency {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  background: var(--rp-rust);
  color: var(--rp-white);
  font-weight: 800;
}

.rp-befast {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--rp-line);
  border-left: 1px solid var(--rp-line);
}

.rp-befast article {
  padding: 24px;
  border-right: 1px solid var(--rp-line);
  border-bottom: 1px solid var(--rp-line);
}

.rp-befast article > strong { color: var(--rp-rust); font-size: 38px; }
.rp-befast h3 { margin: 8px 0; font-size: 18px; }
.rp-befast p { margin: 0; font-size: 17px; line-height: 1.65; }
.rp-action-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 28px 0 0; padding: 0; list-style: none; }
.rp-action-steps li { padding: 22px; background: var(--rp-olive); color: var(--rp-white); }
.rp-action-steps strong, .rp-action-steps span { display: block; }
.rp-action-steps span { margin-top: 8px; font-size: 16px; line-height: 1.6; opacity: .84; }

/* Section foundations */
.rp-section {
  position: relative;
  padding: clamp(92px, 11vw, 154px) 0;
  scroll-margin-top: 78px;
}

.rp-section--paper {
  background: var(--rp-paper);
}

.rp-section--white {
  background: var(--rp-white);
}

.rp-section--olive {
  background: var(--rp-olive-deep);
  color: #fff;
}

.rp-section-head {
  display: grid;
  grid-template-columns: minmax(230px, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(48px, 8vw, 110px);
  align-items: end;
  margin-bottom: clamp(58px, 8vw, 96px);
}

.rp-section-head__note {
  max-width: 540px;
  margin: 0 0 4px auto;
  color: var(--rp-ink-soft);
  font-size: 15px;
  line-height: 1.9;
  word-break: keep-all;
}

.rp-section--olive .rp-section-head__note {
  color: rgba(255, 255, 255, 0.68);
}

.rp-rule-title {
  margin: 0;
  color: var(--rp-ink-soft);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* Cause / mechanism */
.rp-cause-layout {
  display: grid;
  grid-template-columns: minmax(250px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(48px, 8vw, 112px);
  align-items: start;
}

.rp-cause-summary {
  position: sticky;
  top: 112px;
  padding-top: 4px;
}

.rp-cause-summary__statement {
  margin: 18px 0 0;
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  font-size: clamp(22px, 2.8vw, 34px);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1.55;
  word-break: keep-all;
}

.rp-cause-summary__note {
  margin: 24px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--rp-line);
  color: var(--rp-ink-soft);
  font-size: 13px;
  line-height: 1.8;
  word-break: keep-all;
}

.rp-cause-list {
  border-top: 1px solid var(--rp-ink);
}

.rp-cause-item {
  display: grid;
  grid-template-columns: 64px minmax(170px, 0.65fr) minmax(0, 1.35fr);
  gap: 24px;
  padding: 30px 0;
  border-bottom: 1px solid var(--rp-line);
}

.rp-cause-item__number {
  color: var(--rp-rust);
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  font-size: 13px;
  letter-spacing: 0.08em;
}

.rp-cause-item h3 {
  margin: -4px 0 0;
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  font-size: clamp(20px, 2vw, 27px);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.45;
  word-break: keep-all;
}

.rp-cause-item p {
  margin: 0;
  color: var(--rp-ink-soft);
  font-size: 15px;
  line-height: 1.85;
  word-break: keep-all;
}

/* Standard care */
.rp-care-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1.25fr);
  gap: clamp(52px, 9vw, 124px);
  align-items: start;
}

.rp-care-intro {
  position: sticky;
  top: 112px;
}

.rp-care-intro .rp-lead {
  font-size: 16px;
}

.rp-care-disclaimer {
  margin-top: 30px;
  padding: 21px 0 0 20px;
  border-top: 1px solid var(--rp-line);
  border-left: 3px solid var(--rp-rust);
  color: var(--rp-ink-soft);
  font-size: 13px;
  line-height: 1.8;
  word-break: keep-all;
}

.rp-care-flow {
  counter-reset: care;
  border-top: 1px solid var(--rp-ink);
}

.rp-care-step {
  position: relative;
  display: grid;
  grid-template-columns: 62px minmax(180px, 0.68fr) minmax(0, 1.32fr);
  gap: 22px;
  padding: 31px 0;
  border-bottom: 1px solid var(--rp-line);
  counter-increment: care;
}

.rp-care-step::before {
  color: var(--rp-rust);
  content: counter(care, decimal-leading-zero);
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  font-size: 13px;
  letter-spacing: 0.08em;
}

.rp-care-step h3 {
  margin: -4px 0 0;
  font-size: clamp(18px, 1.8vw, 23px);
  font-weight: 750;
  letter-spacing: -0.035em;
  line-height: 1.55;
  word-break: keep-all;
}

.rp-care-step p {
  margin: 0;
  color: var(--rp-ink-soft);
  font-size: 15px;
  line-height: 1.85;
  word-break: keep-all;
}

.rp-care-step small {
  display: block;
  margin-top: 9px;
  color: var(--rp-rust);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.65;
}

/* Research evidence */
.rp-research-lede {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: clamp(46px, 8vw, 100px);
  align-items: end;
  margin-bottom: 62px;
}

.rp-research-lede__aside {
  margin: 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 15px;
  line-height: 1.9;
  word-break: keep-all;
}

.rp-research-questions {
  border-top: 1px solid var(--rp-line-light);
}

.rp-research-question {
  display: grid;
  grid-template-columns: 78px minmax(220px, 0.75fr) minmax(0, 1.25fr);
  gap: 28px;
  padding: 32px 0;
  border-bottom: 1px solid var(--rp-line-light);
}

.rp-research-question__number {
  color: #d7b89f;
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  font-size: 13px;
}

.rp-research-question h3 {
  margin: -4px 0 0;
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  font-size: clamp(20px, 2.1vw, 28px);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.48;
  word-break: keep-all;
}

.rp-research-question p {
  margin: 0;
  color: rgba(255, 255, 255, 0.66);
  font-size: 14px;
  line-height: 1.9;
  word-break: keep-all;
}

.rp-evidence-boundary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 70px;
  border-top: 1px solid var(--rp-line-light);
  border-bottom: 1px solid var(--rp-line-light);
}

.rp-evidence-boundary article {
  padding: 34px 42px 38px 0;
}

.rp-evidence-boundary article + article {
  padding-right: 0;
  padding-left: 42px;
  border-left: 1px solid var(--rp-line-light);
}

.rp-evidence-boundary__label {
  color: #d7b89f;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.rp-evidence-boundary h3 {
  margin: 13px 0 20px;
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  font-size: clamp(22px, 2.3vw, 30px);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1.48;
  word-break: keep-all;
}

.rp-evidence-boundary ul {
  display: grid;
  gap: 13px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.rp-evidence-boundary li {
  position: relative;
  padding-left: 18px;
  color: rgba(255, 255, 255, 0.67);
  font-size: 14px;
  line-height: 1.8;
  word-break: keep-all;
}

.rp-evidence-boundary li::before {
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 5px;
  height: 5px;
  background: #d7b89f;
  content: "";
  transform: rotate(45deg);
}

/* Paper ledger */
.rp-ledger-head {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 1.1fr);
  gap: 50px;
  align-items: end;
  margin-bottom: 54px;
}

.rp-ledger-head p {
  max-width: 620px;
  margin: 0 0 5px auto;
  color: var(--rp-ink-soft);
  font-size: 14px;
  line-height: 1.85;
  word-break: keep-all;
}

.rp-study-list {
  border-top: 1px solid var(--rp-ink);
}

.rp-study {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr) 160px;
  gap: 28px;
  align-items: start;
  padding: 30px 0 32px;
  border-bottom: 1px solid var(--rp-line);
}

.rp-study__year {
  color: var(--rp-rust);
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.55;
}

.rp-study h3 {
  margin: -3px 0 8px;
  font-size: clamp(18px, 1.85vw, 23px);
  font-weight: 750;
  letter-spacing: -0.035em;
  line-height: 1.55;
  word-break: keep-all;
}

.rp-study p {
  max-width: 720px;
  margin: 0;
  color: var(--rp-ink-soft);
  font-size: 14px;
  line-height: 1.82;
  word-break: keep-all;
}

.rp-study__meta {
  display: inline-flex;
  margin-top: 12px;
  padding: 5px 9px;
  border: 1px solid rgba(157, 85, 69, 0.42);
  color: var(--rp-rust);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.rp-study a {
  display: inline-flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rp-line);
  color: var(--rp-olive);
  font-size: 12px;
  font-weight: 800;
}

.rp-study a:hover {
  border-color: var(--rp-olive);
}

/* Video */
.rp-video {
  background: var(--rp-white);
}

.rp-video__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(310px, 0.84fr);
  gap: clamp(50px, 8vw, 106px);
  align-items: center;
}

.rp-video__frame-wrap {
  margin: 0;
}

.rp-video__frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #111;
}

.rp-video__frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.rp-video__frame-wrap figcaption {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--rp-line);
  color: var(--rp-ink-soft);
  font-size: 11px;
  line-height: 1.55;
}

.rp-video__copy h2 {
  margin: 0;
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  font-size: clamp(31px, 4vw, 49px);
  font-weight: 600;
  letter-spacing: -0.055em;
  line-height: 1.32;
  word-break: keep-all;
}

.rp-video__copy p {
  margin: 24px 0 0;
  color: var(--rp-ink-soft);
  font-size: 15px;
  line-height: 1.9;
  word-break: keep-all;
}

.rp-video__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--rp-line);
  color: var(--rp-ink-soft);
  font-size: 11px;
}

.rp-video__related {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  margin-top: 24px;
  color: var(--rp-olive);
  font-size: 13px;
  font-weight: 800;
}

.rp-video__related:hover {
  text-decoration: underline;
}

/* Brain fog symptom / evaluation lists */
.rp-symptom-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--rp-ink);
}

.rp-symptom-list article {
  min-height: 220px;
  padding: 34px 36px 40px 0;
  border-bottom: 1px solid var(--rp-line);
}

.rp-symptom-list article:nth-child(even) {
  padding-right: 0;
  padding-left: 36px;
  border-left: 1px solid var(--rp-line);
}

.rp-symptom-list__number {
  color: var(--rp-rust);
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  font-size: 12px;
}

.rp-symptom-list h3 {
  margin: 24px 0 10px;
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  font-size: clamp(21px, 2.2vw, 29px);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.45;
  word-break: keep-all;
}

.rp-symptom-list p {
  margin: 0;
  color: var(--rp-ink-soft);
  font-size: 14px;
  line-height: 1.8;
  word-break: keep-all;
}

/* FAQ */
.rp-faq {
  margin-top: 50px;
  border-top: 1px solid var(--rp-ink);
}

.rp-faq details {
  border-bottom: 1px solid var(--rp-line);
}

.rp-faq summary {
  position: relative;
  padding: 26px 58px 26px 0;
  cursor: pointer;
  font-size: 17px;
  font-weight: 750;
  letter-spacing: -0.025em;
  line-height: 1.65;
  list-style: none;
  word-break: keep-all;
}

.rp-faq summary::-webkit-details-marker {
  display: none;
}

.rp-faq summary::before,
.rp-faq summary::after {
  position: absolute;
  top: 50%;
  right: 5px;
  width: 18px;
  height: 1px;
  background: var(--rp-olive);
  content: "";
  transition: transform 0.2s ease;
}

.rp-faq summary::after {
  transform: rotate(90deg);
}

.rp-faq details[open] summary::after {
  transform: rotate(0);
}

.rp-faq__answer {
  max-width: 820px;
  padding: 0 58px 26px 0;
  color: var(--rp-ink-soft);
  font-size: 14px;
  line-height: 1.9;
  word-break: keep-all;
}

/* CTA */
.rp-cta {
  padding: clamp(72px, 9vw, 112px) 0;
  background: var(--rp-olive);
  color: #fff;
}

.rp-cta__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 52px;
  align-items: center;
}

.rp-cta h2 {
  max-width: 760px;
  margin: 0;
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  font-size: clamp(31px, 4.2vw, 51px);
  font-weight: 600;
  letter-spacing: -0.055em;
  line-height: 1.34;
  word-break: keep-all;
}

.rp-cta p {
  max-width: 740px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  line-height: 1.85;
  word-break: keep-all;
}

.research-page--parkinson {
  --rp-page-accent: var(--rp-olive);
}

.research-page--stroke {
  --rp-page-accent: var(--rp-rust);
}

.research-page--brainfog {
  --rp-page-accent: var(--rp-brainfog);
}

.research-page .rp-eyebrow:not(.rp-eyebrow--light),
.research-page .rp-index__links span {
  color: var(--rp-page-accent);
}

.research-page .rp-button:not(.rp-button--quiet):not(.rp-button--light):not(.rp-button--line-light) {
  border-color: var(--rp-page-accent);
  background: var(--rp-page-accent);
}

.research-page #consultBar,
.research-page .osns-teaser,
.research-page .osns-fab {
  display: none !important;
}

.research-page .floating-cta__instagram,
.research-page .floating-cta__youtube {
  display: none !important;
}

@media (min-width: 821px) {
  .research-page .floating-cta__kakao,
  .research-page .floating-cta__top {
    display: none !important;
  }
}

.research-page #menu-overlay:not(.open) {
  visibility: hidden;
}

.research-page #menu-overlay.open {
  visibility: visible;
}

.research-page .menu-parent:not(.open) + .menu-sub {
  visibility: hidden;
}

.research-page #menu-overlay.open .menu-parent.open + .menu-sub {
  visibility: visible;
}

.research-page .drawer-close {
  color: var(--rp-ink-soft);
}

.research-page #menu-overlay a[href="/login.html"] {
  color: var(--rp-olive) !important;
}

.research-page .floating-cta__top {
  color: var(--rp-ink-soft);
}

.rp-cta__actions {
  display: grid;
  gap: 10px;
  min-width: 225px;
}

/* Footer */
.rp-footer {
  padding: 72px 0 34px;
  background: #20251b;
  color: rgba(255, 255, 255, 0.68);
}

.rp-footer__grid {
  display: grid;
  grid-template-columns: 1.2fr 0.7fr 0.7fr;
  gap: 70px;
}

.rp-footer__logo {
  width: 142px;
  margin-bottom: 24px;
  filter: brightness(0) invert(1);
}

.rp-footer__info {
  display: grid;
  gap: 5px;
  font-size: 13px;
  line-height: 1.7;
}

.rp-footer h2 {
  margin: 0 0 22px;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.rp-footer__list {
  display: grid;
  gap: 9px;
  font-size: 13px;
}

.rp-footer__list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.rp-footer__links {
  display: grid;
  gap: 9px;
  font-size: 13px;
}

.rp-footer__links a:hover {
  color: #fff;
}

.rp-footer__bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 54px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  color: rgba(255, 255, 255, 0.5);
  font-size: 11px;
}

/* Responsive */
@media (max-width: 1040px) {
  .rp-hero__grid,
  .rp-cause-layout,
  .rp-care-layout,
  .rp-video__grid {
    grid-template-columns: 1fr;
  }

  .rp-hero__copy {
    max-width: 780px;
  }

  .rp-hero__media {
    width: min(100%, 650px);
    margin-left: auto;
  }

  .rp-cause-summary,
  .rp-care-intro {
    position: static;
    max-width: 760px;
  }

  .rp-index__inner {
    grid-template-columns: 150px minmax(0, 1fr);
  }

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

  .rp-index__links a:nth-child(2) {
    border-right: 0;
  }

  .rp-index__links a:nth-child(-n + 2) {
    border-bottom: 1px solid var(--rp-line);
  }
}

@media (max-width: 820px) {
  .rp-section-head,
  .rp-research-lede,
  .rp-ledger-head,
  .rp-cta__grid,
  .rp-footer__grid {
    grid-template-columns: 1fr;
  }

  .rp-section-head__note,
  .rp-ledger-head p {
    margin-left: 0;
  }

  .rp-cause-item,
  .rp-care-step,
  .rp-research-question {
    grid-template-columns: 54px minmax(0, 1fr);
  }

  .rp-cause-item p,
  .rp-care-step p,
  .rp-research-question p {
    grid-column: 2;
  }

  .rp-evidence-boundary {
    grid-template-columns: 1fr;
  }

  .rp-evidence-boundary article {
    padding-right: 0;
  }

  .rp-evidence-boundary article + article {
    padding-left: 0;
    border-top: 1px solid var(--rp-line-light);
    border-left: 0;
  }

  .rp-study {
    grid-template-columns: 90px minmax(0, 1fr);
  }

  .rp-study a {
    grid-column: 2;
    justify-self: start;
  }

  .rp-cta__actions {
    width: min(100%, 360px);
  }

  .rp-footer__grid {
    gap: 42px;
  }
}

@media (max-width: 640px) {
  .rp-wrap,
  .rp-wrap--narrow {
    width: min(calc(100% - 32px), 1240px);
  }

  .rp-hero {
    padding: 66px 0 70px;
  }

  .rp-hero__grid {
    gap: 46px;
  }

  .rp-hero__copy {
    padding-top: 0;
  }

  .rp-hero h1 {
    font-size: clamp(39px, 12vw, 54px);
  }

  .rp-hero__answer {
    margin-top: 22px;
    font-size: 16px;
  }

  .rp-hero__actions {
    display: grid;
  }

  .rp-button {
    width: 100%;
  }

  .rp-hero__media {
    padding: 0 0 26px 22px;
  }

  .rp-hero__media figcaption {
    display: block;
  }

  .rp-hero__media figcaption span {
    display: block;
  }

  .rp-hero__media figcaption span:last-child {
    margin-top: 4px;
    text-align: left;
  }

  .rp-alert {
    grid-template-columns: auto minmax(0, 1fr);
    margin-bottom: 42px;
  }

  .rp-alert a {
    grid-column: 2;
    justify-self: start;
  }

  .rp-index__inner {
    grid-template-columns: 1fr;
  }

  .rp-index__title {
    min-height: 52px;
    padding: 16px 0;
    border-right: 0;
    border-bottom: 1px solid var(--rp-line);
  }

  .rp-index__links a {
    min-height: 68px;
    padding: 16px;
    font-size: 13px;
  }

  .rp-section {
    padding: 78px 0;
  }

  .rp-section-head {
    gap: 30px;
    margin-bottom: 48px;
  }

  .rp-heading {
    font-size: clamp(30px, 9vw, 42px);
  }

  .rp-cause-layout,
  .rp-care-layout {
    gap: 46px;
  }

  .rp-cause-item,
  .rp-care-step,
  .rp-research-question {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 14px;
    padding: 26px 0;
  }

  .rp-cause-item p,
  .rp-care-step p,
  .rp-research-question p {
    font-size: 14px;
  }

  .rp-research-lede {
    gap: 26px;
    margin-bottom: 42px;
  }

  .rp-evidence-boundary {
    margin-top: 48px;
  }

  .rp-study {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .rp-study a {
    grid-column: auto;
    margin-top: 8px;
  }

  .rp-video__grid {
    gap: 42px;
  }

  .rp-video__frame-wrap figcaption {
    display: block;
  }

  .rp-symptom-list {
    grid-template-columns: 1fr;
  }

  .rp-symptom-list article,
  .rp-symptom-list article:nth-child(even) {
    min-height: 0;
    padding: 28px 0 32px;
    border-left: 0;
  }

  .rp-faq summary {
    padding-right: 42px;
    font-size: 16px;
  }

  .rp-faq__answer {
    padding-right: 24px;
  }

  .rp-footer__bottom {
    display: grid;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .rp-button,
  .rp-index__links a,
  .rp-faq summary::after {
    transition: none;
  }
}

/* 2026 reference pass — editorial rhythm, quieter density, clearer mobile scan */
.research-page {
  --rp-section-space: clamp(88px, 9vw, 132px);
  --rp-card-radius: 2px;
}

.research-page .rp-section {
  padding-block: var(--rp-section-space);
}

.research-page .rp-section + .rp-section {
  border-top: 1px solid rgba(34, 37, 30, 0.08);
}

.research-page .rp-section--olive + .rp-section {
  border-top: 0;
}

.research-page .rp-section-head,
.research-page .rp-research-lede,
.research-page .rp-ledger-head {
  margin-bottom: clamp(52px, 6vw, 78px);
}

.research-page .rp-section-head__note,
.research-page .rp-research-lede__aside,
.research-page .rp-ledger-head > p {
  padding-left: 24px;
  border-left: 1px solid var(--rp-line);
}

.research-page .rp-section--olive .rp-research-lede__aside {
  border-left-color: var(--rp-line-light);
}

.research-page .rp-cause-item,
.research-page .rp-care-step,
.research-page .rp-research-question {
  padding-block: clamp(26px, 3vw, 36px);
}

.research-page .rp-cause-item p,
.research-page .rp-care-step p,
.research-page .rp-research-question p {
  max-width: 58ch;
}

.research-page .rp-evidence-snapshot,
.research-page .rp-contrast-readout,
.research-page .rp-result-table,
.research-page .rp-study-timeline {
  box-shadow: 0 18px 48px rgba(34, 37, 30, 0.055);
}

.research-page .rp-external-notice,
.research-page .rp-regulatory-boundary {
  max-width: none;
  border-radius: var(--rp-card-radius);
}

.research-page .rp-faq {
  margin-top: clamp(38px, 5vw, 58px);
}

.research-page .rp-faq details {
  background: rgba(255, 255, 255, 0.42);
}

.research-page .rp-faq details + details {
  margin-top: 2px;
}

.research-page .rp-cta {
  padding-block: clamp(76px, 9vw, 118px);
}

.research-page .menu-parent:focus-visible,
.research-page .header-hamburger:focus-visible,
.research-page .drawer-close:focus-visible,
.research-page a:focus-visible,
.research-page summary:focus-visible {
  outline: 3px solid #b96b57;
  outline-offset: 4px;
}

@media (max-width: 820px) {
  .research-page .rp-section-head__note,
  .research-page .rp-research-lede__aside,
  .research-page .rp-ledger-head > p {
    padding-top: 18px;
    padding-left: 0;
    border-top: 1px solid var(--rp-line);
    border-left: 0;
  }

  .research-page .rp-section--olive .rp-research-lede__aside {
    border-top-color: var(--rp-line-light);
  }
}

@media (max-width: 640px) {
  .research-page {
    --rp-section-space: 72px;
  }

  .research-page .rp-hero {
    padding-block: 58px 64px;
  }

  .research-page .rp-hero h1 {
    max-width: 12ch;
    font-size: clamp(36px, 10.8vw, 48px);
    line-height: 1.2;
  }

  .research-page .rp-index {
    overflow: hidden;
  }

  .research-page .rp-index__inner {
    width: 100%;
  }

  .research-page .rp-index__title {
    display: none;
  }

  .research-page .rp-index__links {
    display: flex;
    overflow-x: auto;
    padding: 0 16px;
    scrollbar-width: none;
    scroll-snap-type: x proximity;
  }

  .research-page .rp-index__links::-webkit-scrollbar {
    display: none;
  }

  .research-page .rp-index__links a {
    min-width: min(70vw, 240px);
    border-right: 1px solid var(--rp-line);
    border-bottom: 0 !important;
    scroll-snap-align: start;
  }

  .research-page .rp-cause-item,
  .research-page .rp-care-step,
  .research-page .rp-research-question {
    padding-block: 24px;
  }

  .research-page .rp-evidence-snapshot,
  .research-page .rp-contrast-readout {
    box-shadow: none;
  }
}

/* Evidence disclosure and safe research readouts */
.research-page p,
.research-page li,
.research-page dd {
  max-width: 68ch;
}

.rp-evidence-snapshot {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 40px 0 22px;
  border-block: 1px solid var(--rp-ink);
}

.rp-evidence-snapshot > * { padding: 28px 30px; }
.rp-evidence-snapshot > * + * { border-left: 1px solid var(--rp-line); }
.rp-evidence-snapshot__result span { color: var(--rp-ink-soft); font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.rp-evidence-snapshot__result strong { display: block; margin: 8px 0 2px; color: var(--rp-olive); font-size: clamp(42px, 5vw, 58px); line-height: 1; }
.rp-evidence-snapshot__result p,
.rp-evidence-snapshot__neutral p { margin: 10px 0; line-height: 1.6; }
.rp-evidence-snapshot__neutral span { color: var(--rp-ink-soft); font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.rp-evidence-snapshot__neutral strong { display: block; margin-top: 16px; font-size: clamp(24px, 2.4vw, 30px); line-height: 1.25; }
.rp-evidence-snapshot__limits { grid-column: 1 / -1; display: flex; flex-direction: row; flex-wrap: wrap; gap: 9px 24px; background: #eee9df; border-top: 1px solid var(--rp-line); border-left: 0 !important; }
.rp-evidence-snapshot__limits strong { margin-bottom: 8px; font-size: 13px; }
.rp-evidence-snapshot__limits span { padding-top: 9px; border-top: 1px solid var(--rp-line); font-weight: 750; }

.rp-contrast-readout { display: grid; grid-template-columns: 1.15fr .85fr; margin: 40px 0 22px; border-block: 1px solid var(--rp-ink); }
.rp-contrast-readout article { padding: 30px; }
.rp-contrast-readout article + article { border-left: 1px solid var(--rp-line); }
.rp-contrast-readout span { display: block; color: var(--rp-ink-soft); font-size: 12px; font-weight: 800; letter-spacing: .06em; }
.rp-contrast-readout strong { display: block; margin: 12px 0 8px; font-size: clamp(34px, 5vw, 58px); line-height: 1; }
.rp-contrast-readout__primary { border-left: 5px solid var(--rp-rust); background: #fbf3f0; }
.rp-contrast-readout__primary strong { color: var(--rp-rust); }
.rp-contrast-readout__exploratory strong { color: var(--rp-ink-soft); }
.rp-contrast-readout p { margin: 0 0 9px; font-weight: 750; line-height: 1.5; }
.rp-contrast-readout small { color: var(--rp-ink-soft); line-height: 1.55; }

.rp-disclosure { margin: 28px 0; border-block: 1px solid var(--rp-line); }
.rp-disclosure summary { padding: 20px 42px 20px 0; cursor: pointer; font-weight: 800; line-height: 1.55; }
.rp-disclosure summary:focus-visible { outline: 3px solid var(--rp-page-accent); outline-offset: 4px; }
.rp-disclosure__body { padding: 0 0 28px; }
.rp-regulatory-boundary { margin: 30px 0; padding: 18px 0 18px 22px; border-left: 3px solid var(--rp-rust); line-height: 1.75; }
.rp-patient-resources { margin-top: 50px; padding-top: 30px; border-top: 1px solid var(--rp-ink); }
.rp-patient-resources h3 { margin: 0 0 10px; font-size: 22px; }
.rp-patient-resources ul { display: grid; grid-template-columns: 1.1fr .9fr; margin: 24px 0 0; padding: 0; border-top: 1px solid var(--rp-line); list-style: none; }
.rp-patient-resources li { padding: 16px 20px 16px 0; border-bottom: 1px solid var(--rp-line); }
.rp-patient-resources li:nth-child(even) { padding-left: 20px; border-left: 1px solid var(--rp-line); }
.rp-patient-resources a { color: var(--rp-olive); font-weight: 750; text-decoration: underline; text-underline-offset: 4px; }
.rp-external-notice {
  max-width: 68ch;
  margin: 24px 0 0;
  padding: 18px 20px;
  border-left: 3px solid currentColor;
  background: rgba(255, 255, 255, 0.08);
  font-size: 15px;
  line-height: 1.75;
}

.rp-study-facts {
  margin: 40px 0 32px;
  border-top: 1px solid var(--rp-line);
}

.rp-study-facts__row {
  display: grid;
  grid-template-columns: minmax(140px, 0.28fr) 1fr;
  gap: 24px;
  padding: 17px 0;
  border-bottom: 1px solid var(--rp-line);
}

.rp-study-facts dt {
  font-weight: 800;
}

.rp-study-facts dd {
  margin: 0;
}

.rp-result-table {
  overflow-x: auto;
  margin: 32px 0;
  border: 1px solid var(--rp-line);
  border-radius: 8px;
  background: var(--rp-white);
}

.rp-result-table table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
}

.rp-result-table caption {
  padding: 20px;
  color: var(--rp-ink);
  font-weight: 800;
  text-align: left;
}

.rp-result-table th,
.rp-result-table td {
  padding: 17px 20px;
  border-top: 1px solid var(--rp-line);
  text-align: left;
  vertical-align: top;
}

.rp-result-table thead th {
  background: var(--rp-paper);
  font-size: 14px;
}

.rp-result-table__primary {
  border-left: 4px solid var(--rp-rust);
  background: #fbf3f0;
}

.rp-result-table__secondary {
  color: var(--rp-ink-soft);
  font-size: 14px;
}

.research-page--stroke .rp-result-table__secondary {
  background: var(--rp-white);
  font-size: 13px;
}

.rp-result-explainer,
.rp-timeline-caption {
  max-width: 72ch;
  color: var(--rp-ink-soft);
  font-size: 15px;
  line-height: 1.75;
}

.rp-heading--status {
  margin-top: 64px;
}

.rp-risk-list {
  display: grid;
  gap: 12px;
  margin: 28px 0;
  padding: 0;
  list-style: none;
}

.rp-risk-list li {
  padding: 14px 0 14px 22px;
  border-top: 1px solid var(--rp-line);
  position: relative;
}

.rp-risk-list li::before {
  position: absolute;
  left: 0;
  color: var(--rp-page-accent);
  content: "—";
}

.rp-study-timeline {
  margin: 40px 0;
  padding: 0;
  border-top: 1px solid var(--rp-line);
  list-style: none;
}

.rp-study-timeline__item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--rp-line);
}

.rp-study-timeline__status {
  padding: 24px;
  border: 2px solid var(--rp-unknown);
  background: var(--rp-white);
}

.rp-study-timeline__status strong {
  color: var(--rp-unknown);
  font-size: 20px;
}

.rp-study-timeline__status span {
  grid-column: 2;
}

.rp-cellvian-note__grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 72px;
  align-items: start;
}

.rp-cellvian-note__principles {
  padding-left: 32px;
  border-left: 1px solid var(--rp-line);
  font-size: 17px;
  line-height: 1.75;
}

.rp-emergency {
  padding: 20px 0;
  background: var(--rp-rust);
  color: var(--rp-white);
  line-height: 1.65;
}

.rp-emergency strong {
  margin-right: 8px;
}

.rp-sources {
  padding: 24px 0;
  background: var(--rp-paper);
  color: var(--rp-ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.rp-sources p {
  margin: 0;
}

@media (max-width: 768px) {
  .rp-hero__answer,
  .rp-cause-item p,
  .rp-care-step p,
  .rp-research-question p,
  .rp-symptom-list p,
  .rp-faq__answer,
  .rp-lead,
  .rp-section-head__note {
    font-size: 18px;
    line-height: 1.7;
  }

  .rp-befast { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rp-action-steps { grid-template-columns: 1fr; }
  .rp-alert a { min-width: 112px; min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 10px 16px; background: var(--rp-rust); color: var(--rp-white); }

  .rp-evidence-snapshot { grid-template-columns: 1fr; }
  .rp-contrast-readout { grid-template-columns: 1fr; }
  .rp-contrast-readout article + article { border-top: 1px solid var(--rp-line); border-left: 0; }
  .rp-evidence-snapshot > * + * { border-top: 1px solid var(--rp-line); border-left: 0; }
  .rp-patient-resources ul { grid-template-columns: 1fr; }
  .rp-patient-resources li:nth-child(even) { padding-left: 0; border-left: 0; }
  .rp-cellvian-note__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .rp-cellvian-note__principles {
    padding: 24px 0 0;
    border-top: 1px solid var(--rp-line);
    border-left: 0;
  }

  .research-page .rp-sources {
    padding-bottom: 96px;
  }
}

@media (min-width: 641px) and (max-width: 1040px) {
  .rp-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(260px, .85fr);
    gap: 40px;
    align-items: center;
  }

  .rp-hero__media {
    padding: 0 0 24px 24px;
  }

  .rp-hero__media img {
    aspect-ratio: 4 / 5;
    max-height: 520px;
  }

  .rp-hero h1 {
    font-size: clamp(42px, 5.6vw, 58px);
  }
}

@media (max-width: 520px) {
  .rp-wrap,
  .rp-wrap--narrow {
    width: min(calc(100% - 32px), 1240px);
  }

  .rp-hero h1 {
    font-size: 34px;
    line-height: 1.2;
    text-wrap: balance;
    word-break: keep-all;
  }

  .rp-hero__answer {
    overflow-wrap: anywhere;
    overflow-wrap: break-word;
    word-break: keep-all;
    font-size: 18px;
    line-height: 1.72;
  }

  .rp-hero__grid { gap: 32px; }
  .rp-hero__media img {
    max-height: 46vh;
    aspect-ratio: 16 / 11;
    object-fit: contain;
  }
  .rp-hero__media figcaption span:last-child { font-size: 10px; opacity: .72; }
  .rp-hero__actions .rp-button--quiet {
    width: auto;
    min-height: 36px;
    padding-inline: 0;
    border: 0;
    border-bottom: 1px solid currentColor;
  }
  .rp-study p { font-size: 16px; line-height: 1.75; }

  .rp-index__links {
    grid-template-columns: 1fr;
  }

  .research-page .rp-index__links {
    grid-template-columns: repeat(4, minmax(152px, 1fr));
  }

  .rp-befast { grid-template-columns: 1fr; }
  .rp-befast article { padding: 20px; }
  .rp-alert { grid-template-columns: auto 1fr; gap: 12px; margin-bottom: 32px; }
  .rp-alert a { grid-column: 1 / -1; width: 100%; }

  .rp-button {
    width: 100%;
    min-height: 44px;
  }

  .rp-study-facts__row,
  .rp-study-timeline__item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .rp-study-timeline__status span {
    grid-column: auto;
  }

  .rp-result-table {
    overflow-x: visible;
    border: 0;
    background: transparent;
  }

  .rp-result-table table,
  .rp-result-table tbody,
  .rp-result-table tr,
  .rp-result-table th,
  .rp-result-table td {
    display: block;
    width: 100%;
    min-width: 0;
  }

  .rp-result-table thead {
    display: none;
  }

  .rp-result-table caption {
    display: block;
    padding: 18px 0;
    border-bottom: 2px solid var(--rp-page-accent);
  }

  .rp-result-table tr {
    margin: 0 0 18px;
    border: 1px solid var(--rp-line);
    border-left: 4px solid var(--rp-page-accent);
    background: var(--rp-white);
  }

  .rp-result-table th,
  .rp-result-table td {
    padding: 14px 16px;
    border-top: 1px solid var(--rp-line);
  }

  .rp-result-table th {
    border-top: 0;
    font-size: 16px;
  }

  .rp-result-table td::before {
    display: block;
    margin-bottom: 5px;
    color: var(--rp-page-accent);
    content: attr(data-label);
    font-size: 12px;
    font-weight: 800;
  }
}

@media (max-width: 360px) {
  .rp-hero h1 {
    font-size: 32px;
    line-height: 1.22;
  }
}

/* Landing alignment: final cascade guard */
.research-page .rp-hero {
  min-height: min(820px, calc(100dvh - 82px));
  padding: clamp(92px, 10vw, 148px) 0 clamp(82px, 9vw, 132px);
  border-bottom: 0;
}

.research-page .rp-hero__copy {
  padding-top: 28px;
}

.research-page .rp-hero__status {
  border-top-color: rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.84);
}

.research-page .rp-hero__status span {
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.07);
  color: rgba(255, 255, 255, 0.84);
}

.research-page .rp-hero__media {
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.05);
}

.research-page .rp-hero__media::before {
  background: rgba(255, 255, 255, 0.22);
}

.research-page .rp-hero__media figcaption,
.research-page .rp-hero__figure-no {
  color: rgba(255, 255, 255, 0.64);
}

@media (min-width: 641px) and (max-width: 1040px) {
  .research-page .rp-hero {
    min-height: 700px;
    padding-block: 88px;
  }

  .research-page .rp-hero__copy {
    padding-top: 0;
  }

  .research-page .rp-trust-strip p {
    min-height: 128px;
    padding-inline: 24px;
  }
}

@media (max-width: 820px) {
  .research-page .rp-trust-strip__grid {
    grid-template-columns: 1fr;
  }

  .research-page .rp-trust-strip p {
    min-height: 100px;
    padding: 24px 56px 24px 24px;
  }

  .research-page .rp-trust-strip p + p {
    border-top: 1px solid var(--rp-line);
    border-left: 0;
  }

  .research-page .rp-trust-strip p > span {
    top: 22px;
    right: 24px;
  }
}

@media (max-width: 640px) {
  .research-page .rp-hero {
    min-height: auto;
    padding: 72px 0 58px;
  }

  .research-page .rp-hero__grid {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .research-page .rp-hero__copy {
    padding-top: 0;
  }

  .research-page .rp-hero h1 {
    max-width: 13ch;
    font-size: clamp(34px, 10vw, 44px);
    line-height: 1.22;
  }

  .research-page--stroke .rp-hero h1 {
    max-width: none;
    font-size: clamp(24px, 7vw, 28px);
    line-height: 1.35;
    letter-spacing: -0.04em;
  }

  .research-page--stroke .rp-mobile-title-line {
    display: block;
    white-space: nowrap;
  }

  .research-page .rp-hero__answer {
    margin-top: 22px;
    color: rgba(255, 255, 255, 0.74);
    font-size: 17px;
    line-height: 1.75;
  }

  .research-page .rp-hero__status {
    gap: 8px;
    margin-top: 22px;
    padding-top: 16px;
  }

  .research-page .rp-hero__status span {
    width: 100%;
    padding: 8px 10px;
  }

  .research-page .rp-hero__actions {
    display: grid;
    gap: 12px;
    margin-top: 26px;
  }

  .research-page .rp-hero .rp-button--quiet {
    justify-self: center;
    width: auto;
  }

  .research-page .rp-hero__media {
    display: none;
  }
}

/* Parkinson visual summaries */
.rp-mechanism-map {
  width: min(100%, 1040px);
  margin: 56px auto 0;
  text-align: center;
}

.rp-mechanism-map__inputs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.rp-mechanism-map__inputs span {
  padding: 16px 10px;
  border: 1px solid var(--rp-line);
  background: var(--rp-paper);
  color: var(--rp-ink-soft);
  font-size: 14px;
  font-weight: 700;
}

.rp-mechanism-map__connector {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 18px;
  align-items: center;
  width: min(72%, 640px);
  margin: 18px auto;
  color: var(--rp-rust);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.rp-mechanism-map__connector i {
  height: 1px;
  background: var(--rp-line);
}

.rp-mechanism-map__core {
  width: min(100%, 520px);
  margin: 0 auto;
  padding: 30px;
  background: var(--rp-olive-deep);
  color: #fff;
}

.rp-mechanism-map__core small,
.rp-symptom-map__lane header small {
  display: block;
  color: #c3a990;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.rp-mechanism-map__core strong {
  display: block;
  margin-top: 8px;
  font-family: "Noto Serif KR", "Pretendard", serif;
  font-size: clamp(23px, 3vw, 34px);
}

.rp-mechanism-map__core span {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 14px;
}

.rp-mechanism-map__branches {
  position: relative;
  width: 50%;
  height: 40px;
  margin: 0 auto;
  border-right: 1px solid var(--rp-line);
  border-bottom: 1px solid var(--rp-line);
  border-left: 1px solid var(--rp-line);
}

.rp-mechanism-map__branches::before {
  position: absolute;
  top: 0;
  left: 50%;
  height: 100%;
  border-left: 1px solid var(--rp-line);
  content: "";
}

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

.rp-mechanism-map__outputs article {
  padding: 26px;
  background: #edf0e8;
}

.rp-mechanism-map__outputs article:last-child {
  background: #f1ece6;
}

.rp-mechanism-map__outputs small,
.rp-mechanism-map__outputs strong,
.rp-mechanism-map__outputs span {
  display: block;
}

.rp-mechanism-map__outputs small {
  color: var(--rp-rust);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.rp-mechanism-map__outputs strong {
  margin-top: 7px;
  font-family: "Noto Serif KR", "Pretendard", serif;
  font-size: 23px;
}

.rp-mechanism-map__outputs span {
  margin-top: 8px;
  color: var(--rp-ink-soft);
  font-size: 14px;
}

.rp-symptom-map {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 50px;
}

.rp-symptom-map__lane {
  padding: clamp(26px, 4vw, 44px);
  background: #fff;
}

.rp-symptom-map__lane--soft {
  background: #e7ebe5;
}

.rp-symptom-map__lane header {
  display: flex;
  gap: 18px;
  align-items: center;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--rp-line);
}

.rp-symptom-map__lane header > span {
  color: rgba(81, 92, 62, 0.32);
  font-family: "Playfair Display", Georgia, serif;
  font-size: 34px;
  font-style: italic;
}

.rp-symptom-map__lane h3 {
  margin: 3px 0 0;
  font-family: "Noto Serif KR", "Pretendard", serif;
  font-size: 25px;
}

.rp-symptom-map__items {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.rp-symptom-map__items p {
  min-height: 142px;
  margin: 0;
  padding: 24px 18px 20px 0;
  border-bottom: 1px solid var(--rp-line);
}

.rp-symptom-map__items p:nth-child(odd) {
  border-right: 1px solid var(--rp-line);
}

.rp-symptom-map__items p:nth-child(even) {
  padding-left: 20px;
}

.rp-symptom-map__items i,
.rp-symptom-map__items strong,
.rp-symptom-map__items span {
  display: block;
}

.rp-symptom-map__items i {
  margin-bottom: 17px;
  color: var(--rp-rust);
  font-size: 20px;
}

.rp-symptom-map__items strong {
  font-size: 16px;
}

.rp-symptom-map__items span {
  margin-top: 6px;
  color: var(--rp-ink-soft);
  font-size: 13px;
  line-height: 1.55;
}

.rp-research-question p strong {
  display: inline-block;
  min-width: 84px;
  margin-right: 14px;
  color: #d8c4a9;
  font-size: 12px;
  letter-spacing: 0.04em;
}

.rp-doctor-videos {
  margin-top: clamp(72px, 9vw, 116px);
  padding-top: clamp(58px, 7vw, 86px);
  border-top: 1px solid var(--rp-ink);
}

.rp-doctor-videos > header {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 40px;
  align-items: end;
  margin-bottom: 34px;
}

.rp-doctor-videos > header .rp-eyebrow,
.rp-doctor-videos > header .rp-heading {
  grid-column: 1;
}

.rp-doctor-videos > header .rp-heading {
  margin-top: -24px;
}

.rp-doctor-videos > header > p:last-child {
  grid-column: 2;
  grid-row: 1 / span 2;
  margin: 0;
  color: var(--rp-ink-soft);
  line-height: 1.75;
}

.rp-doctor-videos__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 18px;
}

.rp-doctor-videos__grid article {
  background: #fff;
}

.rp-doctor-videos__grid article:first-child {
  grid-row: span 2;
}

.rp-doctor-videos__grid article:first-child .rp-video__frame {
  aspect-ratio: 16 / 10;
}

.rp-doctor-videos__grid article:not(:first-child) {
  display: grid;
  grid-template-columns: minmax(150px, 0.9fr) minmax(160px, 1.1fr);
  grid-template-rows: auto 1fr;
  align-items: start;
}

.rp-doctor-videos__grid article:not(:first-child) .rp-video__frame {
  grid-row: 1 / span 2;
  aspect-ratio: 4 / 3;
}

.rp-doctor-videos__grid article > span,
.rp-doctor-videos__grid article > h3 {
  display: block;
  margin-inline: 20px;
}

.rp-doctor-videos__grid article > span {
  margin-top: 18px;
  color: var(--rp-rust);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.rp-doctor-videos__grid h3 {
  min-height: 68px;
  margin-top: 7px;
  margin-bottom: 20px;
  font-family: "Noto Serif KR", "Pretendard", serif;
  font-size: 19px;
  line-height: 1.55;
}

.research-page--parkinson {
  --rp-section-space: clamp(84px, 8vw, 112px);
}

.research-page--parkinson .rp-hero .rp-button {
  border-radius: 2px;
}

.research-page--parkinson .rp-hero__status span {
  padding: 0;
  border: 0;
  background: transparent;
  backdrop-filter: none;
}

.research-page--parkinson .rp-trust-strip__grid {
  grid-template-columns: 1.35fr 1fr 0.85fr;
}

.research-page--parkinson .rp-trust-strip p {
  min-height: 118px;
}

.research-page--parkinson .rp-trust-strip p > span {
  color: rgba(81, 92, 62, 0.22);
  font-size: 20px;
}

.research-page--parkinson .rp-eyebrow {
  letter-spacing: 0.08em;
  text-transform: none;
}

.research-page--parkinson .rp-mechanism-map__inputs span,
.research-page--parkinson .rp-mechanism-map__outputs article {
  border-radius: 0;
  box-shadow: none;
}

.research-page--parkinson .rp-symptom-map__lane {
  box-shadow: none;
}

.research-page--parkinson .rp-evidence-snapshot {
  background: transparent;
}

@media (max-width: 820px) {
  .rp-mechanism-map__inputs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .rp-symptom-map {
    grid-template-columns: 1fr;
  }

  .rp-doctor-videos > header {
    grid-template-columns: 1fr;
  }

  .rp-doctor-videos > header > p:last-child {
    grid-column: 1;
    grid-row: auto;
  }

  .rp-doctor-videos__grid {
    grid-template-columns: 1fr;
  }

  .rp-doctor-videos__grid article:first-child {
    grid-row: auto;
  }

  .rp-doctor-videos__grid article:not(:first-child) {
    display: block;
  }

  .research-page--parkinson .rp-trust-strip__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .rp-mechanism-map {
    margin-top: 36px;
  }

  .rp-mechanism-map__inputs span {
    padding: 13px 8px;
    font-size: 12px;
  }

  .rp-mechanism-map__connector {
    width: 92%;
  }

  .rp-mechanism-map__core {
    padding: 24px 16px;
  }

  .rp-mechanism-map__branches {
    width: 56%;
    height: 30px;
  }

  .rp-mechanism-map__outputs {
    gap: 8px;
  }

  .rp-mechanism-map__outputs article {
    padding: 20px 10px;
  }

  .rp-mechanism-map__outputs strong {
    font-size: 18px;
  }

  .rp-mechanism-map__outputs span {
    font-size: 12px;
  }

  .rp-symptom-map {
    margin-top: 34px;
  }

  .rp-symptom-map__lane {
    padding: 24px 20px;
  }

  .rp-symptom-map__items {
    grid-template-columns: 1fr;
  }

  .rp-symptom-map__items p {
    min-height: 0;
    padding: 18px 0;
  }

  .rp-symptom-map__items p:nth-child(odd) {
    border-right: 0;
  }

  .rp-symptom-map__items p:nth-child(even) {
    padding-left: 0;
  }

  .rp-symptom-map__items i {
    float: left;
    width: 30px;
    margin: 2px 10px 20px 0;
  }
}

/* Apple-inspired readability system — typography and rhythm only; Osang colors stay intact */
body.research-page--parkinson {
  --rp-section-space: 80px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Pretendard", "Noto Sans KR", "Segoe UI", sans-serif;
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.374px;
  line-height: 1.47;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.research-page--parkinson .rp-hero {
  background: var(--rp-olive-deep);
}

.research-page--parkinson .rp-hero::before,
.research-page--parkinson .rp-hero::after {
  display: none;
}

.research-page--parkinson h1,
.research-page--parkinson h2,
.research-page--parkinson h3,
.research-page--parkinson .rp-heading,
.research-page--parkinson .rp-video__copy h2,
.research-page--parkinson .rp-mechanism-map__core strong,
.research-page--parkinson .rp-mechanism-map__outputs strong,
.research-page--parkinson .rp-symptom-map__lane h3,
.research-page--parkinson .rp-trust-strip strong {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Pretendard", "Noto Sans KR", "Segoe UI", sans-serif;
  font-weight: 600;
}

.research-page--parkinson .rp-hero h1 {
  max-width: 13ch;
  font-size: 56px;
  font-weight: 600;
  letter-spacing: -0.28px;
  line-height: 1.12;
}

.research-page--parkinson .rp-heading,
.research-page--parkinson .rp-video__copy h2 {
  font-size: 40px;
  font-weight: 600;
  letter-spacing: -0.28px;
  line-height: 1.1;
}

.research-page--parkinson h3,
.research-page--parkinson .rp-trust-strip strong {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.231px;
  line-height: 1.19;
}

.research-page--parkinson p,
.research-page--parkinson li,
.research-page--parkinson dd,
.research-page--parkinson .rp-faq__answer {
  max-width: 65ch;
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.374px;
  line-height: 1.47;
}

.research-page--parkinson strong,
.research-page--parkinson b {
  font-weight: 600;
}

.research-page--parkinson .rp-eyebrow,
.research-page--parkinson small,
.research-page--parkinson figcaption,
.research-page--parkinson .rp-hero__figure-no,
.research-page--parkinson .rp-video__meta,
.research-page--parkinson .rp-doctor-videos__grid article > span {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Pretendard", "Noto Sans KR", "Segoe UI", sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.224px;
  line-height: 1.43;
}

.research-page--parkinson .rp-sources,
.research-page--parkinson .rp-footer__bottom {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: -0.12px;
  line-height: 1.5;
}

.research-page--parkinson .rp-section {
  padding-block: 80px;
}

.research-page--parkinson .rp-section-head,
.research-page--parkinson .rp-research-lede,
.research-page--parkinson .rp-ledger-head {
  gap: 48px;
}

.research-page--parkinson .rp-section-head__note,
.research-page--parkinson .rp-research-lede__aside,
.research-page--parkinson .rp-ledger-head > p {
  max-width: 42ch;
}

.research-page--parkinson .rp-hero__answer {
  max-width: 46ch;
  margin-top: 24px;
  font-size: 17px;
  line-height: 1.47;
}

.research-page--parkinson .rp-button {
  min-height: 44px;
  padding: 11px 22px;
  border-radius: 9999px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Pretendard", "Noto Sans KR", "Segoe UI", sans-serif;
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.374px;
  line-height: 1;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}

.research-page--parkinson .rp-hero .rp-button {
  border-radius: 9999px;
}

.research-page--parkinson .rp-hero .rp-button:not(.rp-button--quiet) {
  border-color: var(--rp-olive);
  background: var(--rp-olive);
  color: var(--rp-white);
}

.research-page--parkinson .rp-hero .rp-button:not(.rp-button--quiet):hover {
  border-color: var(--rp-olive);
  background: var(--rp-olive);
  color: var(--rp-white);
  filter: brightness(1.08);
}

.research-page--parkinson .rp-button:active,
.research-page--parkinson .rp-video__related:active,
.research-page--parkinson .rp-index__links a:active {
  transform: scale(0.95);
}

.research-page--parkinson .rp-hero .rp-button--quiet {
  min-height: 44px;
  padding-inline: 12px;
  border-radius: 0;
}

.research-page--parkinson .rp-hero__media {
  box-shadow: none;
  backdrop-filter: none;
}

.research-page--parkinson .rp-hero__media img {
  box-shadow: 3px 5px 30px rgba(7, 10, 6, 0.22);
  filter: none;
  mix-blend-mode: normal;
}

.research-page--parkinson .rp-symptom-map__lane,
.research-page--parkinson .rp-doctor-videos__grid article,
.research-page--parkinson .rp-evidence-snapshot,
.research-page--parkinson .rp-contrast-readout,
.research-page--parkinson .rp-result-table,
.research-page--parkinson .rp-study-timeline,
.research-page--parkinson .rp-faq details {
  box-shadow: none;
}

.research-page--parkinson .rp-index__links a,
.research-page--parkinson .rp-faq summary,
.research-page--parkinson .rp-video__related,
.research-page--parkinson .rp-patient-resources a {
  min-height: 44px;
}

.research-page--parkinson .rp-faq summary {
  padding-block: 17px;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.374px;
  line-height: 1.47;
}

.research-page--parkinson .rp-video__copy p,
.research-page--parkinson .rp-doctor-videos > header > p:last-child,
.research-page--parkinson .rp-result-explainer {
  font-size: 17px;
  line-height: 1.47;
}

.research-page--parkinson .rp-doctor-videos__grid h3 {
  min-height: 0;
  font-size: 21px;
  line-height: 1.19;
}

.research-page--parkinson .rp-cta h2 {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Pretendard", "Noto Sans KR", "Segoe UI", sans-serif;
  font-size: 40px;
  font-weight: 600;
  letter-spacing: -0.28px;
  line-height: 1.12;
}

.research-page--parkinson .rp-mechanism-map__inputs span,
.research-page--parkinson .rp-mechanism-map__outputs span,
.research-page--parkinson .rp-symptom-map__items span {
  font-size: 14px;
  line-height: 1.43;
}

.research-page--parkinson .rp-index__links a,
.research-page--parkinson .rp-mechanism-map__inputs span,
.research-page--parkinson .rp-symptom-map__lane header small,
.research-page--parkinson .rp-video__related,
.research-page--parkinson .rp-evidence-boundary__label,
.research-page--parkinson .rp-evidence-snapshot span,
.research-page--parkinson .rp-evidence-snapshot__limits span,
.research-page--parkinson .rp-disclosure summary,
.research-page--parkinson .rp-patient-resources a {
  font-weight: 600;
}

@media (max-width: 1068px) {
  .research-page--parkinson .rp-hero h1 {
    font-size: 40px;
    line-height: 1.1;
  }

  .research-page--parkinson .rp-heading,
  .research-page--parkinson .rp-video__copy h2 {
    font-size: 34px;
    line-height: 1.2;
  }
}

@media (max-width: 833px) {
  .research-page--parkinson {
    --rp-section-space: 64px;
  }

  .research-page--parkinson .rp-section {
    padding-block: 64px;
  }
}

@media (max-width: 640px) {
  .research-page--parkinson .rp-section {
    padding-block: 48px;
  }

  .research-page--parkinson .rp-hero {
    padding-block: 56px 48px;
  }

  .research-page--parkinson .rp-hero h1 {
    max-width: 14ch;
    font-size: 34px;
    line-height: 1.12;
  }

  .research-page--parkinson .rp-heading,
  .research-page--parkinson .rp-video__copy h2 {
    font-size: 34px;
    line-height: 1.16;
  }

  .research-page--parkinson .rp-hero__answer,
  .research-page--parkinson p,
  .research-page--parkinson li,
  .research-page--parkinson dd,
  .research-page--parkinson .rp-faq__answer {
    font-size: 17px;
    line-height: 1.47;
  }

  .research-page--parkinson .rp-index__links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow: visible;
    padding: 0;
  }

  .research-page--parkinson .rp-index__links a {
    min-width: 0;
    min-height: 64px;
    border-right: 1px solid var(--rp-line);
    border-bottom: 1px solid var(--rp-line) !important;
  }

  .research-page--parkinson .rp-index__links a:nth-child(even) {
    border-right: 0;
  }

  .research-page--parkinson .rp-doctor-videos__grid article .rp-video__frame,
  .research-page--parkinson .rp-doctor-videos__grid article:first-child .rp-video__frame,
  .research-page--parkinson .rp-doctor-videos__grid article:not(:first-child) .rp-video__frame {
    aspect-ratio: 16 / 9;
  }

  .research-page--parkinson .rp-cta h2 {
    font-size: 34px;
    line-height: 1.16;
  }
}

@media (max-width: 419px) {
  .research-page--parkinson .rp-hero h1,
  .research-page--parkinson .rp-heading,
  .research-page--parkinson .rp-video__copy h2 {
    font-size: 28px;
    line-height: 1.16;
  }

  .research-page--parkinson .rp-cta h2 {
    font-size: 28px;
  }
}