:root {
--bg:#f6f7f8;
--bg-deep:#eef1f3;
--bg-soft:#f9fafb;
--panel:#ffffff;
--panel-soft:#f7f9fa;
--panel-light:#eef3f1;

--text:#1d2328;
--text-soft:#3f4b54;
--text-muted:#6f7b84;

--accent:#35b890;
--accent-dark:#0d5b46;
--accent-soft:rgba(53,184,144,0.12);

--blue:#2f73c8;
--purple:#7558b8;
--orange:#c87523;
--red:#c94f4f;
--green:#2c9b70;
--yellow:#9c7a18;

--line:#dde3e8;
--line-strong:#c8d1d8;

--shadow-sm:0 6px 18px rgba(26,39,48,0.07);
--shadow:0 14px 36px rgba(26,39,48,0.09);
--shadow-deep:0 24px 56px rgba(26,39,48,0.12);

--radius-xl:24px;
--radius-lg:18px;
--radius-md:14px;
--radius-sm:10px;

--content-width:1180px;
--header-height:70px;

font-family:
-apple-system,
BlinkMacSystemFont,
"Segoe UI",
"Hiragino Kaku Gothic ProN",
"Hiragino Sans",
"Yu Gothic",
"YuGothic",
"Noto Sans JP",
sans-serif;
}

*,
*::before,
*::after {
box-sizing:border-box;
}

html {
scroll-behavior:smooth;
scroll-padding-top:calc(var(--header-height) + 20px);
background:var(--bg);
}

body {
margin:0;
min-width:320px;
overflow-x:hidden;
background:var(--bg);
color:var(--text);
text-rendering:optimizeLegibility;
-webkit-font-smoothing:antialiased;
-moz-osx-font-smoothing:grayscale;
}

body.menu-open {
overflow:hidden;
}

button,
input,
textarea,
select {
font:inherit;
}

button,
a {
-webkit-tap-highlight-color:transparent;
}

button {
color:inherit;
}

a {
color:inherit;
}

img,
svg,
video,
canvas {
display:block;
max-width:100%;
}

[hidden] {
display:none !important;
}

::selection {
background:rgba(53,184,144,0.20);
color:var(--text);
}

:focus-visible {
outline:2px solid var(--accent);
outline-offset:3px;
}

/* Accessibility */

.skip-link {
position:fixed;
top:12px;
left:12px;
z-index:1000;
transform:translateY(-160%);
padding:10px 14px;
border-radius:10px;
background:var(--accent);
color:#ffffff;
font-size:0.82rem;
font-weight:800;
text-decoration:none;
box-shadow:var(--shadow-sm);
transition:transform 0.2s ease;
}

.skip-link:focus {
transform:translateY(0);
}

.noscript-message {
position:relative;
z-index:999;
width:100%;
padding:14px 18px;
border-bottom:1px solid #e3bcbc;
background:#fff4f4;
color:#8f3030;
font-size:0.82rem;
line-height:1.7;
text-align:center;
}

/* Shared */

.site-width {
width:min(var(--content-width),calc(100% - 48px));
margin:0 auto;
}

.section {
padding:76px 0;
}

.section-compact {
padding:56px 0;
}

.eyebrow {
margin:0 0 8px;
color:var(--accent-dark);
font-size:0.68rem;
font-weight:850;
letter-spacing:0.14em;
text-transform:uppercase;
}

.section-heading {
display:flex;
align-items:flex-end;
justify-content:space-between;
gap:28px;
margin-bottom:28px;
}

.section-heading-copy {
min-width:0;
}

.section-title {
margin:0;
color:var(--text);
font-size:clamp(1.65rem,3vw,2.45rem);
line-height:1.3;
letter-spacing:-0.028em;
}

.section-description {
max-width:760px;
margin:10px 0 0;
color:var(--text-muted);
font-size:0.86rem;
line-height:1.9;
}

.panel {
border:1px solid var(--line);
border-radius:var(--radius-lg);
background:var(--panel);
box-shadow:var(--shadow-sm);
}

.tag {
display:inline-flex;
align-items:center;
justify-content:center;
min-height:24px;
padding:4px 8px;
border:1px solid var(--line);
border-radius:999px;
background:#ffffff;
color:var(--text-soft);
font-size:0.58rem;
font-weight:800;
line-height:1;
white-space:nowrap;
}

.tag-green {
border-color:#bde5d4;
background:#eff9f5;
color:#1d7c59;
}

.tag-blue {
border-color:#c6d9ef;
background:#f2f7fd;
color:#245f9f;
}

.tag-purple {
border-color:#d8cee9;
background:#f7f3fb;
color:#654a9f;
}

.tag-orange {
border-color:#ead4bb;
background:#fcf7f0;
color:#a85d18;
}

.tag-red {
border-color:#e9c4c4;
background:#fff5f5;
color:#ac3f3f;
}

.loading-placeholder {
grid-column:1 / -1;
width:100%;
min-height:92px;
display:grid;
place-items:center;
padding:24px;
border:1px dashed var(--line-strong);
border-radius:14px;
background:#fbfcfd;
color:var(--text-muted);
font-size:0.72rem;
line-height:1.7;
text-align:center;
}

/* Header */

.site-header {
position:sticky;
top:0;
z-index:60;
border-bottom:1px solid var(--line);
background:rgba(255,255,255,0.92);
backdrop-filter:blur(16px);
-webkit-backdrop-filter:blur(16px);
box-shadow:0 3px 14px rgba(26,39,48,0.04);
}

.header-inner {
min-height:var(--header-height);
display:flex;
align-items:center;
justify-content:space-between;
gap:24px;
}

.brand {
display:flex;
align-items:center;
gap:11px;
min-width:0;
text-decoration:none;
}

.brand-mark {
position:relative;
width:42px;
height:42px;
flex:0 0 42px;
display:grid;
place-items:center;
border:1px solid #b7dfd2;
border-radius:12px;
background:#eef8f4;
color:var(--accent-dark);
font-size:1.14rem;
font-weight:900;
box-shadow:none;
}

.brand-mark::after {
content:"";
position:absolute;
inset:6px;
border:1px solid rgba(53,184,144,0.18);
border-radius:7px;
}

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

.brand-copy strong {
display:block;
overflow:hidden;
color:var(--text);
font-size:0.86rem;
text-overflow:ellipsis;
white-space:nowrap;
}

.brand-copy span {
display:block;
margin-top:3px;
overflow:hidden;
color:var(--text-muted);
font-size:0.59rem;
letter-spacing:0.09em;
text-overflow:ellipsis;
text-transform:uppercase;
white-space:nowrap;
}

.desktop-nav {
display:flex;
align-items:center;
gap:4px;
}

.desktop-nav a {
padding:9px 11px;
border-radius:9px;
color:var(--text-muted);
font-size:0.67rem;
font-weight:760;
text-decoration:none;
transition:
color 0.2s ease,
background 0.2s ease;
}

.desktop-nav a:hover {
color:var(--text);
background:#f1f4f5;
}

.header-actions {
display:flex;
align-items:center;
gap:9px;
}

.header-live {
display:flex;
align-items:center;
gap:8px;
color:var(--text-soft);
font-size:0.63rem;
font-weight:760;
white-space:nowrap;
}

.live-dot {
width:8px;
height:8px;
flex:0 0 8px;
border-radius:50%;
background:var(--green);
box-shadow:0 0 0 5px rgba(44,155,112,0.10);
}

.top-link {
min-height:38px;
display:inline-flex;
align-items:center;
justify-content:center;
padding:8px 12px;
border:1px solid var(--line);
border-radius:10px;
background:#ffffff;
color:var(--text-soft);
font-size:0.64rem;
font-weight:800;
text-decoration:none;
transition:
color 0.2s ease,
border-color 0.2s ease,
background 0.2s ease;
}

.top-link:hover {
color:var(--accent-dark);
border-color:#acd9ca;
background:#f2faf7;
}

.mobile-menu-button {
display:none;
width:40px;
height:40px;
place-items:center;
border:1px solid var(--line);
border-radius:10px;
background:#ffffff;
cursor:pointer;
transition:
border-color 0.2s ease,
background 0.2s ease;
}

.mobile-menu-button:hover {
border-color:#acd9ca;
background:#f2faf7;
}

.mobile-nav {
display:none;
padding-bottom:14px;
}

.mobile-nav.is-open {
display:grid;
}

.mobile-nav a {
padding:12px 4px;
border-bottom:1px solid var(--line);
color:var(--text-soft);
font-size:0.72rem;
font-weight:760;
text-decoration:none;
}

.mobile-nav a:hover {
color:var(--accent-dark);
}

/* Hero */

.hero {
position:relative;
isolation:isolate;
min-height:calc(82vh - var(--header-height));
display:flex;
align-items:center;
overflow:hidden;
padding:88px 0 82px;
background:#eef3f1;
border-bottom:1px solid var(--line);
}

.hero-background {
position:absolute;
z-index:-5;
inset:0;
overflow:hidden;
}

.hero-background-image{
    position:absolute;
    inset:-2%;
    background-image:url("../assets/campus-library-hero.png");
    background-position:center center;
    background-size:cover;
    background-repeat:no-repeat;

    transform:scale(1.05);

    filter:
        saturate(0.75)
        brightness(0.95)
        contrast(1.02);

    opacity:0.46;
}

.hero-background-overlay{
    position:absolute;
    inset:0;

    background:
    linear-gradient(
        90deg,
        rgba(246,247,248,0.82) 0%,
        rgba(246,247,248,0.68) 36%,
        rgba(246,247,248,0.34) 62%,
        rgba(246,247,248,0.76) 100%
    ),
    linear-gradient(
        180deg,
        rgba(255,255,255,0.08) 0%,
        rgba(246,247,248,0.42) 100%
    );
}

.hero-library-light{
    position:absolute;
    top:-16%;
    right:-8%;

    width:70vw;
    height:90vh;

    background:
    radial-gradient(
        ellipse at center,
        rgba(53,184,144,0.18) 0%,
        rgba(53,184,144,0.08) 36%,
        transparent 72%
    );

    filter:blur(20px);
    opacity:.95;
    pointer-events:none;
}

.hero-particles {
display:none;
}

.hero-inner {
position:relative;
z-index:2;
display:grid;
grid-template-columns:minmax(0,1.15fr) minmax(240px,0.85fr);
gap:42px;
align-items:center;
}

.hero-copy {
position:relative;
z-index:4;
max-width:760px;
}

.hero-label {
display:inline-flex;
align-items:center;
gap:8px;
margin:0;
padding:7px 11px;
border:1px solid #bcded2;
border-radius:999px;
background:rgba(255,255,255,0.84);
color:var(--accent-dark);
font-size:0.64rem;
font-weight:850;
letter-spacing:0.13em;
}

.hero h1 {
max-width:760px;
margin:25px 0 0;
color:#172027;
font-size:clamp(3.7rem,7.2vw,7rem);
line-height:0.98;
letter-spacing:-0.064em;
text-shadow:none;
}

.hero-subtitle {
margin:23px 0 0;
color:var(--accent-dark);
font-size:clamp(1rem,1.6vw,1.35rem);
font-weight:760;
line-height:1.55;
letter-spacing:0.035em;
}

.hero-lead {
max-width:690px;
margin:25px 0 0;
color:#3d4b54;
font-size:0.92rem;
line-height:2;
text-shadow:none;
}

.hero-sports-signals {
display:flex;
flex-wrap:wrap;
gap:8px;
margin-top:24px;
}

.hero-sports-signals span {
display:inline-flex;
align-items:center;
min-height:28px;
padding:6px 9px;
border:1px solid var(--line);
border-radius:999px;
background:rgba(255,255,255,0.84);
color:#4f5d66;
font-size:0.57rem;
font-weight:820;
letter-spacing:0.10em;
}

.hero-guide {
max-width:670px;
margin:19px 0 0;
color:var(--text-muted);
font-size:0.67rem;
line-height:1.7;
letter-spacing:0.03em;
}

.hero-actions {
display:flex;
flex-wrap:wrap;
gap:11px;
margin-top:28px;
}

.primary-button,
.secondary-button {
min-height:46px;
display:inline-flex;
align-items:center;
justify-content:center;
gap:9px;
padding:10px 17px;
border-radius:12px;
font-size:0.72rem;
font-weight:850;
text-decoration:none;
cursor:pointer;
transition:
transform 0.2s ease,
box-shadow 0.2s ease,
border-color 0.2s ease,
background 0.2s ease,
color 0.2s ease;
}

.primary-button {
border:1px solid var(--accent);
background:var(--accent);
color:#ffffff;
box-shadow:0 8px 22px rgba(53,184,144,0.18);
}

.primary-button:hover {
transform:translateY(-2px);
background:#2ea880;
box-shadow:0 12px 28px rgba(53,184,144,0.24);
}

.secondary-button {
border:1px solid var(--line-strong);
background:#ffffff;
color:var(--text);
}

.secondary-button:hover {
transform:translateY(-2px);
border-color:#acd9ca;
background:#f2faf7;
color:var(--accent-dark);
}

.hero-scroll {
position:absolute;
z-index:4;
left:50%;
bottom:22px;
display:flex;
flex-direction:column;
align-items:center;
gap:5px;
transform:translateX(-50%);
color:#7e898f;
font-size:0.54rem;
font-weight:800;
letter-spacing:0.12em;
text-decoration:none;
transition:color 0.2s ease;
}

.hero-scroll:hover {
color:var(--accent-dark);
}

.mobile-only {
display:none;
}

/* Main thinking section */

.mind-section {
position:relative;
overflow:hidden;
border-bottom:1px solid var(--line);
background:#ffffff;
}

.mind-section::before {
display:none;
}

.problem-layout {
position:relative;
z-index:2;
display:grid;
grid-template-columns:minmax(300px,0.72fr) minmax(0,1.28fr);
gap:24px;
align-items:start;
}

.problem-selector {
position:sticky;
top:calc(var(--header-height) + 24px);
overflow:hidden;
padding:24px;
border:1px solid var(--line);
border-radius:var(--radius-xl);
background:#ffffff;
box-shadow:var(--shadow-sm);
}

.problem-selector::before {
display:none;
}

.problem-selector-heading {
position:relative;
z-index:1;
}

.problem-selector-label {
margin:0;
color:var(--accent-dark);
font-size:0.61rem;
font-weight:900;
letter-spacing:0.13em;
}

.problem-selector-heading h3 {
margin:9px 0 0;
font-size:1.16rem;
line-height:1.45;
}

.problem-selector-heading > p:last-child {
margin:9px 0 0;
color:var(--text-muted);
font-size:0.68rem;
line-height:1.7;
}

.concern-list {
position:relative;
z-index:1;
display:flex;
flex-direction:column;
gap:9px;
margin-top:22px;
}

.concern-button {
position:relative;
width:100%;
display:grid;
grid-template-columns:42px minmax(0,1fr) auto;
gap:11px;
align-items:center;
padding:12px;
border:1px solid var(--line);
border-radius:13px;
background:#ffffff;
color:inherit;
text-align:left;
cursor:pointer;
transition:
transform 0.2s ease,
border-color 0.2s ease,
background 0.2s ease,
box-shadow 0.2s ease;
}

.concern-button:hover {
transform:translateY(-1px);
border-color:#acd9ca;
background:#f7fbf9;
}

.concern-button.is-active {
border-color:#83ccb4;
background:#eef8f4;
box-shadow:
0 6px 18px rgba(53,184,144,0.10),
inset 0 0 0 1px rgba(53,184,144,0.06);
}

.concern-code {
width:42px;
height:42px;
display:grid;
place-items:center;
border-radius:11px;
background:#eef8f4;
color:var(--accent-dark);
font-size:0.62rem;
font-weight:900;
letter-spacing:0.04em;
}

.concern-main {
min-width:0;
}

.concern-main strong {
display:block;
color:var(--text);
font-size:0.74rem;
line-height:1.5;
}

.concern-main span {
display:block;
margin-top:3px;
overflow:hidden;
color:var(--text-muted);
font-size:0.60rem;
line-height:1.5;
text-overflow:ellipsis;
white-space:nowrap;
}

.concern-arrow {
color:#96a1a8;
font-size:0.66rem;
font-weight:900;
transition:
color 0.2s ease,
transform 0.2s ease;
}

.concern-button.is-active .concern-arrow {
color:var(--accent-dark);
transform:translateX(2px);
}

.problem-selector-guide {
position:relative;
z-index:1;
margin:20px 0 0;
padding-top:16px;
border-top:1px solid var(--line);
color:var(--text-muted);
font-size:0.61rem;
line-height:1.72;
}

.thinking-stage {
position:relative;
overflow:hidden;
padding:28px;
border:1px solid var(--line);
border-radius:var(--radius-xl);
background:#ffffff;
box-shadow:var(--shadow-sm);
}

.thinking-stage::before {
content:"";
position:absolute;
top:-130px;
right:-100px;
width:300px;
height:300px;
border:1px solid rgba(53,184,144,0.08);
border-radius:50%;
pointer-events:none;
}

.thinking-stage-header {
position:relative;
z-index:1;
display:flex;
align-items:flex-start;
justify-content:space-between;
gap:20px;
}

.thinking-stage-label {
margin:0;
color:var(--accent-dark);
font-size:0.62rem;
font-weight:900;
letter-spacing:0.13em;
}

.thinking-stage-title {
margin:10px 0 0;
color:var(--text);
font-size:clamp(1.55rem,3vw,2.5rem);
line-height:1.32;
letter-spacing:-0.03em;
}

.thinking-stage-status {
min-height:28px;
display:inline-flex;
align-items:center;
justify-content:center;
padding:6px 10px;
border:1px solid #b8ded2;
border-radius:999px;
background:#f0f8f5;
color:var(--accent-dark);
font-size:0.56rem;
font-weight:900;
letter-spacing:0.11em;
white-space:nowrap;
}

.thinking-stage-description {
position:relative;
z-index:1;
max-width:760px;
margin:15px 0 0;
color:var(--text-soft);
font-size:0.78rem;
line-height:1.9;
}

.thinking-block {
position:relative;
z-index:1;
margin-top:16px;
padding:20px;
border:1px solid var(--line);
border-radius:15px;
background:#fbfcfd;
box-shadow:none;
}

.thinking-block:first-of-type {
margin-top:26px;
}

.thinking-block::before {
content:"";
position:absolute;
top:0;
bottom:0;
left:0;
width:3px;
border-radius:15px 0 0 15px;
background:var(--block-accent,var(--accent));
opacity:0.86;
}

.reframe-block {
--block-accent:var(--orange);
}

.branch-block {
--block-accent:var(--blue);
}

.checkpoint-block {
--block-accent:var(--purple);
}

.action-block {
--block-accent:var(--green);
}

.thinking-block-heading {
display:flex;
align-items:center;
gap:12px;
}

.thinking-step-number {
width:38px;
height:38px;
flex:0 0 38px;
display:grid;
place-items:center;
border:1px solid var(--line);
border-radius:11px;
background:#ffffff;
color:var(--block-accent);
font-size:0.62rem;
font-weight:900;
}

.thinking-block-heading p {
margin:0;
color:var(--block-accent);
font-size:0.55rem;
font-weight:900;
letter-spacing:0.12em;
}

.thinking-block-heading h4 {
margin:5px 0 0;
color:var(--text);
font-size:0.82rem;
line-height:1.5;
}

.branch-list,
.checkpoint-list {
display:grid;
grid-template-columns:repeat(2,minmax(0,1fr));
gap:10px;
margin-top:16px;
}

.path-node {
display:inline-flex;
align-items:center;
gap:7px;
padding:8px 10px;
border:1px solid var(--line);
border-radius:9px;
background:#ffffff;
color:var(--text-soft);
font-size:0.62rem;
font-weight:760;
}

.path-node:not(:last-child)::after {
content:">";
margin-left:3px;
color:#9aa5ab;
}

.related-item {
width:100%;
display:grid;
grid-template-columns:42px minmax(0,1fr) auto;
gap:11px;
align-items:center;
padding:12px;
border:1px solid var(--line);
border-radius:12px;
background:#ffffff;
color:inherit;
text-align:left;
cursor:pointer;
transition:
border-color 0.2s ease,
background 0.2s ease,
transform 0.2s ease;
}

.related-item:hover {
transform:translateY(-1px);
border-color:#acd9ca;
background:#f7fbf9;
}

.related-code {
width:42px;
height:42px;
display:grid;
place-items:center;
border-radius:11px;
background:#eef8f4;
color:var(--accent-dark);
font-size:0.62rem;
font-weight:900;
}

.related-main {
min-width:0;
}

.related-main strong {
display:block;
color:var(--text);
font-size:0.69rem;
line-height:1.45;
}

.related-main span {
display:block;
margin-top:3px;
overflow:hidden;
color:var(--text-muted);
font-size:0.57rem;
text-overflow:ellipsis;
white-space:nowrap;
}

.related-arrow {
color:#8f9aa1;
font-size:0.76rem;
}

/* Bookshelf */

.related-thinking-section {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin-top: 26px;
  padding: 30px 30px 34px;
  border: 1px solid #d5dde1;
  border-radius: var(--radius-xl);
  background: linear-gradient(
    180deg,
    #fbfcfc 0%,
    #f5f7f7 100%
  );
  box-shadow:
    0 12px 32px rgba(26, 39, 48, 0.07),
    inset 0 1px 0 rgba(255, 255, 255, 0.92);
}

.related-thinking-section::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -180px;
  right: -120px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(53, 184, 144, 0.08) 0%,
    rgba(53, 184, 144, 0.025) 46%,
    transparent 72%
  );
  pointer-events: none;
}

.related-thinking-heading {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid #dfe5e8;
}

.related-thinking-heading h3 {
  margin: 0;
  color: var(--text);
  font-size: 1.2rem;
  line-height: 1.45;
  letter-spacing: -0.015em;
}

.related-thinking-heading > p {
  max-width: 500px;
  margin: 0;
  color: var(--text-muted);
  font-size: 0.67rem;
  line-height: 1.72;
  text-align: right;
}

.related-thinking-grid,
.bookshelf {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
  align-items: end;
  margin-top: 26px;
  padding: 30px 18px 26px;
  border: 1px solid #d9e0e3;
  border-radius: 16px;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.96) 0%,
    rgba(247, 249, 249, 0.98) 72%,
    #eef1f2 100%
  );
  box-shadow:
    inset 0 12px 24px rgba(26, 39, 48, 0.025),
    0 7px 20px rgba(26, 39, 48, 0.04);
}

.related-thinking-grid::before,
.bookshelf::before {
  content: "";
  position: absolute;
  z-index: 0;
  left: 10px;
  right: 10px;
  bottom: 14px;
  height: 13px;
  border: 1px solid #cbd4d9;
  border-radius: 3px;
  background: linear-gradient(
    180deg,
    #f8f9f9 0%,
    #e2e7e9 54%,
    #cfd7db 100%
  );
  box-shadow:
    0 7px 12px rgba(26, 39, 48, 0.11),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.related-thinking-grid::after,
.bookshelf::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: 20px;
  right: 20px;
  bottom: 2px;
  height: 18px;
  border-radius: 50%;
  background: rgba(26, 39, 48, 0.08);
  filter: blur(8px);
  pointer-events: none;
}

.book,
.thinking-card {
  position: relative;
  z-index: 2;
  min-width: 0;
  min-height: 224px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  overflow: hidden;
  padding: 16px 13px 18px 17px;
  border: 1px solid var(--book-border, var(--thinking-border, #cbd4d9));
  border-radius: 4px 8px 8px 4px;
  background:
    linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.68) 0,
      rgba(255, 255, 255, 0.12) 12px,
      transparent 13px
    ),
    linear-gradient(
      155deg,
      var(--book-bg, var(--thinking-bg, #ffffff)) 0%,
      #ffffff 100%
    );
  color: inherit;
  text-align: left;
  cursor: pointer;
  opacity: 1;
  transform: none;
  box-shadow:
    3px 5px 10px rgba(26, 39, 48, 0.09),
    inset 5px 0 0 rgba(255, 255, 255, 0.32),
    inset 6px 0 0 var(--book-color, var(--thinking-color, var(--accent)));
  transition:
    transform 0.24s ease,
    border-color 0.22s ease,
    box-shadow 0.22s ease;
}

.book::before,
.thinking-card::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 6px;
  width: 1px;
  height: auto;
  background: var(--book-color, var(--thinking-color, var(--accent)));
  opacity: 0.32;
}

.book::after,
.thinking-card::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 7px;
  border-top: 1px solid rgba(26, 39, 48, 0.09);
  background: repeating-linear-gradient(
    180deg,
    #ffffff 0,
    #ffffff 1px,
    #e9edef 1px,
    #e9edef 2px
  );
  opacity: 0.92;
  pointer-events: none;
}

.book:hover,
.thinking-card:hover {
  z-index: 4;
  transform: translateY(-9px) rotate(-0.6deg);
  border-color: var(--book-border, var(--thinking-border, #acd9ca));
  box-shadow:
    5px 12px 20px rgba(26, 39, 48, 0.15),
    inset 5px 0 0 rgba(255, 255, 255, 0.32),
    inset 6px 0 0 var(--book-color, var(--thinking-color, var(--accent)));
}

.book.is-related {
  border-color: var(--book-border, #acd9ca);
  box-shadow:
    3px 6px 12px rgba(26, 39, 48, 0.1),
    inset 5px 0 0 rgba(255, 255, 255, 0.32),
    inset 6px 0 0 var(--book-color, var(--accent));
}

.book.is-selected {
  z-index: 5;
  transform: translateY(-9px);
  box-shadow:
    5px 12px 20px rgba(26, 39, 48, 0.15),
    0 0 0 2px var(--book-color, var(--accent)),
    inset 5px 0 0 rgba(255, 255, 255, 0.32),
    inset 6px 0 0 var(--book-color, var(--accent));
}

.book[data-type="research"],
.thinking-card[data-type="research"] {
  --book-color: var(--blue);
  --book-border: #afc8e4;
  --book-bg: #edf4fb;
  --thinking-color: var(--blue);
  --thinking-border: #afc8e4;
  --thinking-bg: #edf4fb;
}

.book[data-type="pds"],
.thinking-card[data-type="pds"] {
  --book-color: var(--accent);
  --book-border: #9fd2c1;
  --book-bg: #eaf7f2;
  --thinking-color: var(--accent);
  --thinking-border: #9fd2c1;
  --thinking-bg: #eaf7f2;
}

.book[data-type="case"],
.thinking-card[data-type="case"] {
  --book-color: var(--purple);
  --book-border: #c7b9df;
  --book-bg: #f3eff9;
  --thinking-color: var(--purple);
  --thinking-border: #c7b9df;
  --thinking-bg: #f3eff9;
}

.book[data-type="dictionary"],
.thinking-card[data-type="dictionary"] {
  --book-color: var(--orange);
  --book-border: #dfc09c;
  --book-bg: #faf2e9;
  --thinking-color: var(--orange);
  --thinking-border: #dfc09c;
  --thinking-bg: #faf2e9;
}

.book-type,
.thinking-card-type {
  position: relative;
  z-index: 2;
  color: var(--book-color, var(--thinking-color, var(--accent)));
  font-size: 0.53rem;
  font-weight: 900;
  line-height: 1.35;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.book h4,
.thinking-card h4 {
  position: relative;
  z-index: 2;
  margin: 18px 0 0;
  color: var(--text);
  font-size: 0.78rem;
  line-height: 1.48;
  letter-spacing: -0.01em;
}

.book p,
.thinking-card p {
  position: relative;
  z-index: 2;
  margin: 9px 0 0;
  color: var(--text-muted);
  font-size: 0.59rem;
  line-height: 1.68;
}

.thinking-card-footer {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: auto;
  padding-top: 16px;
  color: var(--text-muted);
  font-size: 0.54rem;
}

.thinking-card-footer strong {
  color: var(--thinking-color, var(--accent-dark));
}

@media (max-width: 1100px) {
  .related-thinking-grid,
  .bookshelf {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .related-thinking-section {
    overflow: hidden;
    padding: 20px 0 24px;
  }

  .related-thinking-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    margin: 0 20px;
    padding-bottom: 16px;
  }

  .related-thinking-heading > p {
    max-width: none;
    text-align: left;
  }

  .related-thinking-grid,
  .bookshelf {
    display: flex;
    grid-template-columns: none;
    gap: 9px;
    align-items: flex-end;
    margin-top: 20px;
    padding: 25px 20px 24px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x proximity;
    scroll-padding-left: 20px;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
    scrollbar-width: none;
  }

  .related-thinking-grid::-webkit-scrollbar,
  .bookshelf::-webkit-scrollbar {
    display: none;
  }

  .related-thinking-grid::before,
  .bookshelf::before {
    left: 10px;
    right: 10px;
    bottom: 12px;
  }

  .book,
  .thinking-card {
    width: 142px;
    min-width: 142px;
    min-height: 205px;
    flex: 0 0 142px;
    scroll-snap-align: start;
    padding: 14px 11px 16px 15px;
  }

  .book:hover,
  .thinking-card:hover {
    transform: none;
  }

  .book.is-selected {
    transform: translateY(-5px);
  }

  .book h4,
  .thinking-card h4 {
    margin-top: 14px;
    font-size: 0.72rem;
  }

  .book p,
  .thinking-card p {
    font-size: 0.56rem;
    line-height: 1.6;
  }

  .thinking-card-footer {
    font-size: 0.51rem;
  }
}

@media (max-width: 420px) {
  .related-thinking-section {
    margin-top: 18px;
    padding: 16px 0 21px;
  }

  .related-thinking-heading {
    margin: 0 16px;
    padding-bottom: 14px;
  }

  .related-thinking-heading h3 {
    font-size: 1.02rem;
  }

  .related-thinking-heading > p {
    font-size: 0.62rem;
  }

  .related-thinking-grid,
  .bookshelf {
    gap: 8px;
    margin-top: 17px;
    padding: 22px 16px 22px;
    scroll-padding-left: 16px;
  }

  .book,
  .thinking-card {
    width: 132px;
    min-width: 132px;
    min-height: 194px;
    flex-basis: 132px;
    padding: 13px 10px 15px 14px;
  }

  .book-type,
  .thinking-card-type {
    font-size: 0.49rem;
  }

  .book h4,
  .thinking-card h4 {
    font-size: 0.69rem;
  }

  .book p,
  .thinking-card p {
    font-size: 0.54rem;
  }
}


/* Latest updates */

#latestUpdates {
background:#f8fafb;
border-top:1px solid var(--line);
border-bottom:1px solid var(--line);
}

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

.update-card {
min-height:220px;
display:flex;
flex-direction:column;
padding:20px;
border:1px solid var(--line);
border-radius:var(--radius-lg);
background:#ffffff;
cursor:pointer;
box-shadow:none;
transition:
transform 0.22s ease,
border-color 0.22s ease,
background 0.22s ease,
box-shadow 0.22s ease;
}

.update-card:hover {
transform:translateY(-3px);
border-color:#acd9ca;
background:#ffffff;
box-shadow:var(--shadow-sm);
}

.update-head {
display:flex;
align-items:center;
justify-content:space-between;
gap:12px;
}

.update-date {
color:var(--text-muted);
font-size:0.58rem;
}

.update-card h3 {
margin:21px 0 0;
color:var(--text);
font-size:0.93rem;
line-height:1.55;
}

.update-card p {
margin:9px 0 0;
color:var(--text-muted);
font-size:0.67rem;
line-height:1.7;
}

.update-footer {
display:flex;
align-items:center;
justify-content:space-between;
gap:10px;
margin-top:auto;
padding-top:20px;
color:var(--text-muted);
font-size:0.59rem;
}

.update-footer strong {
color:var(--accent-dark);
}

/* Facilities */

#facilities {
background:#ffffff;
}

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

.facility-button {
position:relative;
overflow:hidden;
min-height:240px;
display:flex;
flex-direction:column;
width:100%;
padding:21px;
border:1px solid var(--line);
border-radius:var(--radius-lg);
background:#ffffff;
color:inherit;
text-align:left;
cursor:pointer;
box-shadow:none;
transition:
transform 0.23s ease,
border-color 0.23s ease,
background 0.23s ease,
box-shadow 0.23s ease;
}

.facility-button::after {
content:"";
position:absolute;
width:120px;
height:120px;
right:-52px;
bottom:-52px;
border-radius:50%;
background:var(--facility-glow,rgba(53,184,144,0.08));
}

.facility-button:hover {
transform:translateY(-3px);
border-color:var(--facility-border,#acd9ca);
background:#ffffff;
box-shadow:var(--shadow-sm);
}

.facility-button.is-active {
border-color:var(--facility-border,#acd9ca);
box-shadow:0 0 0 2px var(--facility-color,var(--accent));
}

.facility-button[data-type="research"] {
--facility-color:var(--blue);
--facility-glow:rgba(47,115,200,0.08);
--facility-border:#b7cfea;
}

.facility-button[data-type="pds"] {
--facility-color:var(--accent);
--facility-glow:rgba(53,184,144,0.08);
--facility-border:#acd9ca;
}

.facility-button[data-type="case"] {
--facility-color:var(--purple);
--facility-glow:rgba(117,88,184,0.08);
--facility-border:#cfc2e3;
}

.facility-button[data-type="dictionary"] {
--facility-color:var(--orange);
--facility-glow:rgba(200,117,35,0.08);
--facility-border:#e4c8a8;
}

.facility-icon {
width:44px;
height:44px;
display:grid;
place-items:center;
border-radius:12px;
background:#f3f6f7;
color:var(--facility-color);
font-size:1.08rem;
font-weight:900;
}

.facility-name {
margin:20px 0 0;
color:var(--text);
font-size:0.95rem;
font-weight:800;
}

.facility-japanese {
display:block;
margin-top:4px;
color:var(--facility-color);
font-size:0.63rem;
font-weight:760;
}

.facility-description {
margin:11px 0 0;
color:var(--text-muted);
font-size:0.69rem;
line-height:1.72;
}

.facility-footer {
position:relative;
z-index:1;
display:flex;
align-items:center;
justify-content:space-between;
gap:10px;
margin-top:auto;
padding-top:23px;
color:var(--text-muted);
font-size:0.59rem;
}

.facility-footer strong {
color:var(--facility-color);
}

/* Viewpoints */

.viewpoint-section {
position:relative;
overflow:hidden;
border-top:1px solid var(--line);
border-bottom:1px solid var(--line);
background:#f8fafb;
}

.viewpoint-grid {
display:grid;
grid-template-columns:repeat(4,minmax(0,1fr));
gap:12px;
}

.viewpoint-card {
position:relative;
min-height:230px;
overflow:hidden;
padding:20px;
border:1px solid var(--line);
border-radius:var(--radius-lg);
background:#ffffff;
box-shadow:none;
}

.viewpoint-card::after {
content:"";
position:absolute;
right:-54px;
bottom:-54px;
width:132px;
height:132px;
border-radius:50%;
background:rgba(53,184,144,0.06);
}

.viewpoint-number {
position:relative;
z-index:1;
color:#d8dfe3;
font-size:2.45rem;
font-weight:900;
line-height:1;
letter-spacing:-0.05em;
}

.viewpoint-label {
position:relative;
z-index:1;
margin:20px 0 0;
color:var(--accent-dark);
font-size:0.56rem;
font-weight:900;
letter-spacing:0.12em;
}

.viewpoint-card h3 {
position:relative;
z-index:1;
margin:8px 0 0;
color:var(--text);
font-size:0.83rem;
line-height:1.5;
}

.viewpoint-card > p:last-child {
position:relative;
z-index:1;
margin:10px 0 0;
color:var(--text-muted);
font-size:0.65rem;
line-height:1.72;
}

/* Process */

.process-section {
border-bottom:1px solid var(--line);
background:#ffffff;
}

.process-grid {
display:grid;
grid-template-columns:repeat(5,minmax(0,1fr));
gap:10px;
}

.process-item {
position:relative;
min-height:180px;
padding:18px;
border:1px solid var(--line);
border-radius:var(--radius-md);
background:#ffffff;
}

.process-item:not(:last-child)::after {
content:">";
position:absolute;
top:50%;
right:-10px;
z-index:3;
width:20px;
height:20px;
display:grid;
place-items:center;
transform:translateY(-50%);
border:1px solid var(--line);
border-radius:50%;
background:#ffffff;
color:#8b969d;
font-size:0.58rem;
}

.process-number {
color:var(--accent-dark);
font-size:0.6rem;
font-weight:900;
letter-spacing:0.1em;
}

.process-item h3 {
margin:18px 0 0;
color:var(--text);
font-size:0.8rem;
}

.process-item p {
margin:8px 0 0;
color:var(--text-muted);
font-size:0.64rem;
line-height:1.65;
}

/* Service CTA */

#services {
background:#f8fafb;
}

.service-cta {
position:relative;
overflow:hidden;
padding:42px;
border:1px solid #b9dfd2;
border-radius:var(--radius-xl);
background:
linear-gradient(
135deg,
#f3faf7 0%,
#ffffff 72%
);
box-shadow:var(--shadow-sm);
}

.service-cta::after {
content:"";
position:absolute;
width:320px;
height:320px;
right:-130px;
top:-130px;
border:1px solid rgba(53,184,144,0.10);
border-radius:50%;
}

.service-cta-inner {
position:relative;
z-index:2;
display:grid;
grid-template-columns:minmax(0,1fr) auto;
gap:34px;
align-items:center;
}

.service-copy h2 {
margin:0;
color:var(--text);
font-size:clamp(1.5rem,3vw,2.5rem);
line-height:1.35;
}

.service-copy p:last-child {
max-width:720px;
margin:13px 0 0;
color:var(--text-soft);
font-size:0.78rem;
line-height:1.85;
}

.service-links {
display:grid;
grid-template-columns:repeat(2,minmax(120px,1fr));
gap:8px;
}

.service-link {
min-height:44px;
display:flex;
align-items:center;
justify-content:center;
padding:9px 13px;
border:1px solid var(--line);
border-radius:11px;
background:#ffffff;
color:var(--text-soft);
font-size:0.65rem;
font-weight:820;
text-decoration:none;
transition:
color 0.2s ease,
border-color 0.2s ease,
background 0.2s ease,
transform 0.2s ease;
}

.service-link:hover {
transform:translateY(-2px);
color:var(--accent-dark);
border-color:#acd9ca;
background:#f2faf7;
}

/* Data error */

.data-error-section {
padding:0 0 72px;
background:#f8fafb;
}

.data-error-panel {
padding:26px;
border:1px solid #e3bcbc;
border-radius:var(--radius-lg);
background:#fff6f6;
}

.data-error-panel h2 {
margin:0;
color:#7f2f2f;
font-size:1.2rem;
}

.data-error-panel p:not(.eyebrow) {
margin:10px 0 0;
color:#8d5555;
font-size:0.74rem;
line-height:1.75;
}

.data-error-panel .secondary-button {
margin-top:18px;
}

/* Drawer */

.drawer-backdrop {
position:fixed;
z-index:79;
inset:0;
display:none;
background:rgba(24,32,38,0.38);
backdrop-filter:blur(3px);
-webkit-backdrop-filter:blur(3px);
}

.drawer-backdrop.is-open {
display:block;
}

.detail-drawer {
position:fixed;
z-index:80;
top:0;
right:0;
bottom:0;
width:min(680px,95vw);
display:flex;
flex-direction:column;
transform:translateX(105%);
border-left:1px solid var(--line);
background:#ffffff;
box-shadow:-20px 0 60px rgba(26,39,48,0.16);
transition:transform 0.28s ease;
}

.detail-drawer.is-open {
transform:translateX(0);
}

.drawer-header {
display:flex;
align-items:flex-start;
justify-content:space-between;
gap:20px;
padding:21px;
border-bottom:1px solid var(--line);
background:#ffffff;
}

.drawer-eyebrow {
margin:0 0 7px;
color:var(--accent-dark);
font-size:0.61rem;
font-weight:900;
letter-spacing:0.12em;
}

.drawer-title {
margin:0;
color:var(--text);
font-size:1.15rem;
line-height:1.45;
}

.drawer-close {
width:40px;
height:40px;
flex:0 0 40px;
display:grid;
place-items:center;
border:1px solid var(--line);
border-radius:10px;
background:#ffffff;
color:var(--text);
cursor:pointer;
transition:
border-color 0.2s ease,
background 0.2s ease;
}

.drawer-close:hover {
border-color:#acd9ca;
background:#f2faf7;
}

.drawer-body {
flex:1;
overflow:auto;
overscroll-behavior:contain;
padding:21px;
background:#ffffff;
}

.drawer-summary {
margin:0;
color:var(--text-soft);
font-size:0.76rem;
line-height:1.85;
}

.drawer-meta {
display:flex;
flex-wrap:wrap;
gap:7px;
margin-top:18px;
}

.drawer-section {
margin-top:28px;
}

.drawer-section h3 {
margin:0;
color:var(--accent-dark);
font-size:0.7rem;
letter-spacing:0.08em;
}

.drawer-section p {
margin:10px 0 0;
color:var(--text-muted);
font-size:0.7rem;
line-height:1.8;
}

.drawer-related,
.drawer-possibilities,
.drawer-checkpoints {
display:flex;
flex-direction:column;
gap:8px;
margin-top:11px;
}

.drawer-related-item,
.drawer-list-item {
width:100%;
padding:12px;
border:1px solid var(--line);
border-radius:11px;
background:#fbfcfd;
color:inherit;
text-align:left;
}

button.drawer-related-item {
cursor:pointer;
transition:
border-color 0.2s ease,
background 0.2s ease,
transform 0.2s ease;
}

button.drawer-related-item:hover {
transform:translateY(-1px);
border-color:#acd9ca;
background:#f2faf7;
}

.drawer-related-item strong,
.drawer-list-item strong {
display:block;
color:var(--text);
font-size:0.68rem;
line-height:1.5;
}

.drawer-related-item span,
.drawer-list-item span {
display:block;
margin-top:4px;
color:var(--text-muted);
font-size:0.58rem;
line-height:1.65;
}

/* Footer */

.site-footer {
border-top:1px solid var(--line);
padding:
29px
0
calc(29px + env(safe-area-inset-bottom));
background:#ffffff;
}

.footer-inner {
display:flex;
align-items:center;
justify-content:space-between;
gap:20px;
color:var(--text-muted);
font-size:0.61rem;
}

.footer-links {
display:flex;
flex-wrap:wrap;
gap:14px;
}

.footer-links a {
color:var(--text-soft);
text-decoration:none;
}

.footer-links a:hover {
color:var(--accent-dark);
}



.hero-floating-books,
.floating-book,
.hero-athlete,
.athlete-silhouette {
display:none !important;
}

/* Tablet */

@media (max-width:1100px) {
.desktop-nav {
display:none;
}

.mobile-menu-button {
display:grid;
}

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

.problem-layout {
grid-template-columns:1fr;
}

.problem-selector {
position:relative;
top:auto;
}

.concern-list {
display:grid;
grid-template-columns:repeat(2,minmax(0,1fr));
}

.related-thinking-grid,
.bookshelf {
grid-template-columns:repeat(2,minmax(0,1fr));
}

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

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

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

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

.process-item:not(:last-child)::after {
display:none;
}

.process-item:last-child {
grid-column:1 / -1;
}

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

.service-links {
max-width:520px;
}
}

/* Mobile */

@media (max-width:700px) {
:root {
--header-height:64px;
}

.site-width {
width:min(100% - 28px,var(--content-width));
}

.section {
padding:54px 0;
}

.section-compact {
padding:44px 0;
}

.header-inner {
min-height:64px;
}

.brand-mark {
width:38px;
height:38px;
flex-basis:38px;
}

.brand-copy strong {
font-size:0.78rem;
}

.brand-copy span {
max-width:180px;
font-size:0.53rem;
}

.header-live,
.top-link {
display:none;
}

.hero {
min-height:auto;
align-items:flex-start;
padding:64px 0 84px;
}

.hero-background-image {
background-position:58% center;
opacity:0.16;
}

.hero-background-overlay {
background:
linear-gradient(
180deg,
rgba(246,248,247,0.94) 0%,
rgba(246,248,247,0.94) 58%,
rgba(246,248,247,0.98) 100%
);
}

.hero h1 {
max-width:100%;
font-size:clamp(3rem,16vw,4.9rem);
}

.hero-subtitle {
font-size:0.94rem;
}

.hero-lead {
font-size:0.82rem;
line-height:1.9;
}

.hero-guide {
font-size:0.63rem;
}

.hero-actions {
display:grid;
grid-template-columns:1fr;
}

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

.hero-scroll {
bottom:14px;
}

.desktop-only {
display:none;
}

.mobile-only {
display:block;
}

.section-heading {
align-items:flex-start;
flex-direction:column;
gap:15px;
}

.problem-selector,
.thinking-stage,
.related-thinking-section {
padding:20px;
border-radius:19px;
}

.concern-list,
.branch-list,
.checkpoint-list,
.related-thinking-grid,
.bookshelf,
.viewpoint-grid {
grid-template-columns:1fr;
}

.thinking-stage-header,
.related-thinking-heading {
align-items:flex-start;
flex-direction:column;
}

.related-thinking-heading > p {
text-align:left;
}

.thinking-stage-title {
font-size:1.55rem;
}

.thinking-block {
padding:17px;
}

.related-item {
grid-template-columns:38px minmax(0,1fr) auto;
}

.related-code {
width:38px;
height:38px;
}

.update-grid,
.facility-grid,
.process-grid {
grid-template-columns:1fr;
}

.process-item:last-child {
grid-column:auto;
}

.facility-button {
min-height:210px;
}

.viewpoint-card {
min-height:auto;
}

.service-cta {
padding:25px 20px;
border-radius:19px;
}

.service-links {
grid-template-columns:1fr;
}

.footer-inner {
align-items:flex-start;
flex-direction:column;
}

.detail-drawer {
width:100%;
border-left:none;
}
}

/* Small mobile */

@media (max-width:420px) {
.site-width {
width:calc(100% - 20px);
}

.brand-copy span {
max-width:150px;
}

.hero {
padding-top:50px;
}

.hero-label {
font-size:0.54rem;
letter-spacing:0.10em;
}

.hero h1 {
font-size:clamp(2.75rem,16vw,4rem);
}

.hero-sports-signals {
gap:6px;
}

.hero-sports-signals span {
font-size:0.53rem;
}

.problem-selector,
.thinking-stage,
.related-thinking-section {
padding:16px;
}

.concern-button {
grid-template-columns:38px minmax(0,1fr) auto;
padding:10px;
}

.concern-code {
width:38px;
height:38px;
}

.thinking-block {
padding:15px;
}

.thinking-step-number {
width:34px;
height:34px;
flex-basis:34px;
}

.related-thinking-section {
margin-top:18px;
}

.drawer-header,
.drawer-body {
padding:17px;
}
}

/* Hover capability */

@media (hover:none) {
.book:hover,
.thinking-card:hover,
.update-card:hover,
.facility-button:hover,
.related-item:hover,
.process-item:hover,
.service-link:hover,
.concern-button:hover {
transform:none;
}
}

/* Reduced motion */

@media (prefers-reduced-motion:reduce) {
*,
*::before,
*::after {
scroll-behavior:auto !important;
animation-duration:0.01ms !important;
animation-iteration-count:1 !important;
transition-duration:0.01ms !important;
}
}

.phenomenon-accordion {
  width: 100%;
  margin-top: 22px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 6px 18px rgba(26, 39, 48, 0.05);
}

.phenomenon-accordion-toggle {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "heading icon"
    "current icon";
  align-items: center;
  gap: 4px 16px;
  width: 100%;
  min-height: 82px;
  padding: 16px 18px;
  border: 0;
  background: #ffffff;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition:
    background 0.2s ease,
    color 0.2s ease;
}

.phenomenon-accordion-toggle:hover {
  background: #f7fbf9;
}

.phenomenon-accordion-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -3px;
}

.phenomenon-accordion-heading {
  grid-area: heading;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 10px;
  min-width: 0;
}

.phenomenon-accordion-label {
  color: var(--accent-dark);
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.phenomenon-accordion-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 23px;
  padding: 3px 8px;
  border: 1px solid #bde5d4;
  border-radius: 999px;
  background: #eff9f5;
  color: #1d7c59;
  font-size: 0.58rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.phenomenon-accordion-current {
  grid-area: current;
  min-width: 0;
  overflow: hidden;
  color: var(--text-muted);
  font-size: 0.72rem;
  line-height: 1.5;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.phenomenon-accordion-icon {
  grid-area: icon;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #f7f9fa;
  color: var(--accent-dark);
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 1;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease;
}

.phenomenon-accordion-toggle:hover
.phenomenon-accordion-icon {
  border-color: #acd9ca;
  background: #eef8f4;
}

.phenomenon-accordion.is-open
.phenomenon-accordion-icon {
  transform: rotate(180deg);
  border-color: #83ccb4;
  background: #eef8f4;
}

.phenomenon-accordion-body {
  border-top: 1px solid var(--line);
  background: #fbfcfd;
}

.phenomenon-accordion-body[hidden] {
  display: none;
}

.phenomenon-accordion
#phenomenonList {
  display: flex;
  flex-direction: column;
  gap: 9px;
  max-height: min(62vh, 720px);
  margin-top: 0;
  padding: 12px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}

.phenomenon-accordion
#phenomenonList::-webkit-scrollbar {
  width: 8px;
}

.phenomenon-accordion
#phenomenonList::-webkit-scrollbar-track {
  background: transparent;
}

.phenomenon-accordion
#phenomenonList::-webkit-scrollbar-thumb {
  border: 2px solid transparent;
  border-radius: 999px;
  background: #c8d1d8;
  background-clip: padding-box;
}

.phenomenon-accordion
#phenomenonList::-webkit-scrollbar-thumb:hover {
  background: #aeb9c0;
  background-clip: padding-box;
}

@media (max-width: 700px) {
  .phenomenon-accordion {
    margin-top: 18px;
    border-radius: 14px;
  }

  .phenomenon-accordion-toggle {
    min-height: 76px;
    padding: 14px 15px;
    gap: 3px 12px;
  }

  .phenomenon-accordion-label {
    font-size: 0.65rem;
  }

  .phenomenon-accordion-count {
    font-size: 0.54rem;
  }

  .phenomenon-accordion-current {
    font-size: 0.67rem;
  }

  .phenomenon-accordion-icon {
    width: 34px;
    height: 34px;
  }

  .phenomenon-accordion
  #phenomenonList {
    max-height: 56vh;
    padding: 8px;
  }
}

/* Thinking flow 6-step extension */

.question-choice {
  width: 100%;
  min-height: 72px;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #ffffff;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
}

.question-choice:hover {
  transform: translateY(-1px);
  border-color: #acd9ca;
  background: #f7fbf9;
}

.question-choice.is-active {
  border-color: #83ccb4;
  background: #eef8f4;
  box-shadow:
    0 6px 18px rgba(53, 184, 144, 0.08),
    inset 0 0 0 1px rgba(53, 184, 144, 0.05);
}

.question-choice-number {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #f5f8f7;
  color: var(--accent-dark);
  font-size: 0.6rem;
  font-weight: 900;
  letter-spacing: 0.04em;
}

.question-choice.is-active .question-choice-number {
  border-color: #a9daca;
  background: #ffffff;
}

.question-choice-label {
  min-width: 0;
  color: var(--text);
  font-size: 0.7rem;
  font-weight: 760;
  line-height: 1.65;
}

.question-response {
  grid-column: 1 / -1;
  margin-top: 2px;
  padding: 14px 15px;
  border: 1px solid #bde5d4;
  border-radius: 12px;
  background: #f3faf7;
  color: var(--text-soft);
  font-size: 0.68rem;
  line-height: 1.8;
}

.thinking-block > h5 {
  margin: 18px 0 0;
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 800;
  line-height: 1.65;
}

.thinking-block > p {
  margin: 10px 0 0;
  color: var(--text-soft);
  font-size: 0.72rem;
  line-height: 1.85;
}

.thinking-block > h5:empty,
.thinking-block > p:empty {
  display: none;
}

/* Step 02 - Common theory */

.thinking-block[aria-labelledby="commonTheoryBlockTitle"] {
  --block-accent: var(--blue);
}

/* Step 03 - Adjustment view */

.thinking-block[aria-labelledby="adjustmentBlockTitle"] {
  --block-accent: var(--orange);
  background: #fffdfa;
}

/* Step 04 - Next step */

.thinking-block[aria-labelledby="nextStepBlockTitle"] {
  --block-accent: var(--purple);
  background: #fcfbfe;
}

/* Step 05 - Premium */

#premiumPanel {
  --block-accent: var(--accent);
  background: #f8fcfa;
  border-color: #c5e5da;
  transition:
    opacity 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease;
}

#premiumPanel.is-locked {
  border-color: #d8dee2;
  background: #f7f8f9;
}

#premiumPanel.is-locked::before {
  background: #9aa5ab;
}

#premiumPanel.is-locked .thinking-step-number {
  color: #78848c;
}

#premiumPanel.is-locked .thinking-block-heading p {
  color: #78848c;
}

#premiumPanel.is-locked > h5 {
  color: #56616a;
}

#premiumPanel.is-locked > p {
  color: #7a858c;
}

/* Step 06 - Related content */

.thinking-block[aria-labelledby="relatedListTitle"] {
  --block-accent: var(--green);
}

#relatedList .related-item {
  grid-template-columns: 48px minmax(0, 0.72fr) minmax(0, 1.4fr) 22px;
  gap: 10px;
}

#relatedList .related-item > span:nth-child(1) {
  width: 48px;
  min-height: 38px;
  display: grid;
  place-items: center;
  padding: 5px;
  border-radius: 9px;
  background: #eef8f4;
  color: var(--accent-dark);
  font-size: 0.56rem;
  font-weight: 900;
  line-height: 1.25;
  text-align: center;
}

#relatedList .related-item > span:nth-child(2) {
  min-width: 0;
  color: var(--text);
  font-size: 0.68rem;
  font-weight: 800;
  line-height: 1.5;
}

#relatedList .related-item > span:nth-child(3) {
  min-width: 0;
  overflow: hidden;
  color: var(--text-muted);
  font-size: 0.58rem;
  line-height: 1.55;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#relatedList .related-item > span:nth-child(4) {
  color: #8f9aa1;
  font-size: 0.76rem;
  text-align: right;
}

/* Thinking flow mobile */

@media (max-width: 700px) {
  .question-choice {
    min-height: 66px;
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
    padding: 11px 12px;
  }

  .question-choice-number {
    width: 34px;
    height: 34px;
  }

  .question-choice-label {
    font-size: 0.67rem;
  }

  .question-response {
    padding: 12px 13px;
    font-size: 0.65rem;
  }

  .thinking-block > h5 {
    font-size: 0.78rem;
  }

  .thinking-block > p {
    font-size: 0.69rem;
  }

  #relatedList .related-item {
    grid-template-columns: 42px minmax(0, 1fr) 20px;
    gap: 9px;
  }

  #relatedList .related-item > span:nth-child(1) {
    width: 42px;
  }

  #relatedList .related-item > span:nth-child(2) {
    font-size: 0.66rem;
  }

  #relatedList .related-item > span:nth-child(3) {
    grid-column: 2 / 3;
    margin-top: -4px;
    font-size: 0.56rem;
    white-space: normal;
  }

  #relatedList .related-item > span:nth-child(4) {
    grid-column: 3;
    grid-row: 1 / span 2;
    align-self: center;
  }
}

@media (hover: none) {
  .question-choice:hover {
    transform: none;
  }
}

/* Topic navigation */

#relatedTopicsPanel {
  --block-accent: var(--accent);
  background: #f9fcfb;
  border-color: #c9e4da;
}

#relatedTopicList {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.topic-item {
  position: relative;
  width: 100%;
  min-width: 0;
  min-height: 126px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 15px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #ffffff;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  box-shadow: none;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
}

.topic-item::after {
  content: ">";
  position: absolute;
  top: 14px;
  right: 14px;
  color: #98a3a9;
  font-size: 0.68rem;
  font-weight: 900;
  transition:
    color 0.2s ease,
    transform 0.2s ease;
}

.topic-item:hover {
  transform: translateY(-1px);
  border-color: #9fd6c4;
  background: #f7fbf9;
  box-shadow: 0 6px 18px rgba(26, 39, 48, 0.06);
}

.topic-item:hover::after {
  color: var(--accent-dark);
  transform: translateX(2px);
}

.topic-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.topic-category {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 4px 7px;
  border: 1px solid #c8e4da;
  border-radius: 999px;
  background: #f0f8f5;
  color: var(--accent-dark);
  font-size: 0.52rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.topic-label,
.topic-title {
  display: block;
  max-width: calc(100% - 22px);
  margin-top: 12px;
  color: var(--text);
  font-size: 0.75rem;
  font-weight: 820;
  line-height: 1.5;
}

.topic-summary {
  margin: 7px 0 0;
  color: var(--text-muted);
  font-size: 0.61rem;
  line-height: 1.7;
}

.topic-header {
  position: relative;
  grid-column: 1 / -1;
  padding: 20px;
  overflow: hidden;
  border: 1px solid #a9daca;
  border-radius: 15px;
  background:
    linear-gradient(
      135deg,
      #eef8f4 0%,
      #f8fcfa 68%,
      #ffffff 100%
    );
}

.topic-header::after {
  content: "";
  position: absolute;
  right: -48px;
  bottom: -48px;
  width: 130px;
  height: 130px;
  border: 1px solid rgba(53, 184, 144, 0.13);
  border-radius: 50%;
  pointer-events: none;
}

.topic-header .topic-category {
  position: relative;
  z-index: 1;
  border-color: #acd9ca;
  background: #ffffff;
}

.topic-header .topic-title {
  position: relative;
  z-index: 1;
  max-width: 100%;
  margin: 14px 0 0;
  color: var(--text);
  font-size: 1rem;
  font-weight: 850;
  line-height: 1.5;
}

.topic-header .topic-summary {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 9px 0 0;
  color: var(--text-soft);
  font-size: 0.68rem;
  line-height: 1.8;
}

#relatedTopicList > .empty-message {
  grid-column: 1 / -1;
  margin: 0;
  padding: 16px;
  border: 1px dashed var(--line-strong);
  border-radius: 12px;
  background: #fbfcfd;
  color: var(--text-muted);
  font-size: 0.64rem;
  line-height: 1.7;
  text-align: center;
}

.topic-item .topic-category:first-child {
  margin-right: 22px;
}

@media (max-width: 700px) {
  #relatedTopicList {
    grid-template-columns: 1fr;
    gap: 9px;
    margin-top: 14px;
  }

  .topic-item {
    min-height: 112px;
    padding: 13px;
    border-radius: 12px;
  }

  .topic-item::after {
    top: 13px;
    right: 13px;
  }

  .topic-category {
    min-height: 21px;
    padding: 4px 7px;
    font-size: 0.5rem;
  }

  .topic-label,
  .topic-title {
    margin-top: 10px;
    font-size: 0.71rem;
  }

  .topic-summary {
    margin-top: 6px;
    font-size: 0.59rem;
    line-height: 1.65;
  }

  .topic-header {
    padding: 17px;
    border-radius: 13px;
  }

  .topic-header .topic-title {
    margin-top: 12px;
    font-size: 0.9rem;
  }

  .topic-header .topic-summary {
    margin-top: 8px;
    font-size: 0.64rem;
    line-height: 1.75;
  }
}

@media (max-width: 420px) {
  .topic-item {
    min-height: 106px;
    padding: 12px;
  }

  .topic-header {
    padding: 15px;
  }

  .topic-header .topic-title {
    font-size: 0.86rem;
  }
}

@media (hover: none) {
  .topic-item:hover {
    transform: none;
  }

  .topic-item:hover::after {
    transform: none;
  }
}

/* Topic detail extension */

.topic-card.main-topic {
  position: relative;
  grid-column: 1 / -1;
  min-width: 0;
  padding: 22px;
  overflow: hidden;
  border: 1px solid #8fcfba;
  border-radius: 16px;
  background: linear-gradient(
    135deg,
    #eaf7f2 0%,
    #f6fbf9 58%,
    #ffffff 100%
  );
  box-shadow:
    0 8px 24px rgba(26, 39, 48, 0.06),
    inset 0 0 0 1px rgba(53, 184, 144, 0.04);
}

.topic-card.main-topic::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 4px;
  background: var(--accent);
}

.topic-card.main-topic::after {
  content: "";
  position: absolute;
  right: -62px;
  bottom: -62px;
  width: 168px;
  height: 168px;
  border: 1px solid rgba(53, 184, 144, 0.14);
  border-radius: 50%;
  pointer-events: none;
}

.topic-card.main-topic .topic-category {
  position: relative;
  z-index: 1;
  border-color: #9fd6c4;
  background: #ffffff;
}

.topic-card.main-topic .topic-label {
  position: relative;
  z-index: 1;
  display: block;
  max-width: 100%;
  margin: 15px 0 0;
  color: var(--text);
  font-size: 1.08rem;
  font-weight: 880;
  line-height: 1.5;
  letter-spacing: -0.015em;
}

.topic-card.main-topic .topic-summary {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 10px 0 0;
  color: var(--text-soft);
  font-size: 0.7rem;
  line-height: 1.85;
}

#relatedTopicList > .topic-header {
  margin-top: 8px;
}

#relatedTopicList > .topic-card.main-topic + .topic-header {
  margin-top: 12px;
}

#relatedTopicList > .topic-header .topic-category {
  background: #ffffff;
  letter-spacing: 0.09em;
}

#relatedTopicList > .topic-header .topic-title {
  font-size: 0.9rem;
}

#relatedTopicList [data-topic-id] {
  border-color: #d8e1e5;
}

#relatedTopicList [data-topic-id]:hover {
  border-color: #9fd6c4;
  background: #f5faf8;
}

#relatedTopicList [data-topic-phenomenon-id] {
  border-color: #d9dfe7;
  background: linear-gradient(
    180deg,
    #ffffff 0%,
    #fafbfd 100%
  );
}

#relatedTopicList [data-topic-phenomenon-id]::after {
  content: "VIEW";
  position: absolute;
  top: 15px;
  right: 14px;
  width: auto;
  height: auto;
  color: #7a8790;
  font-size: 0.48rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

#relatedTopicList [data-topic-phenomenon-id]:hover {
  border-color: #b8c7d3;
  background: #f7f9fb;
}

#relatedTopicList [data-topic-phenomenon-id]:hover::after {
  color: var(--accent-dark);
  transform: none;
}

#relatedTopicList [data-topic-phenomenon-id] .topic-category {
  border-color: #d4dde4;
  background: #f6f8fa;
  color: #60707b;
}

#relatedTopicList [data-topic-phenomenon-id] .topic-title {
  padding-right: 34px;
}

#relatedTopicList .topic-header + .empty-message {
  grid-column: 1 / -1;
}

#relatedTopicList .topic-card.main-topic + .topic-header {
  border-color: #c8e4da;
  background: linear-gradient(
    135deg,
    #f2faf7 0%,
    #ffffff 100%
  );
}

#relatedTopicList [data-topic-id] + .topic-header,
#relatedTopicList .empty-message + .topic-header {
  margin-top: 12px;
}

#relatedTopicList .topic-header:nth-of-type(n + 2) {
  border-color: #d7e0e5;
  background: linear-gradient(
    135deg,
    #f7f9fa 0%,
    #ffffff 100%
  );
}

#relatedTopicList .topic-header:nth-of-type(n + 2) .topic-category {
  border-color: #d6dfe5;
  background: #ffffff;
  color: #5f6d76;
}

.topic-block .thinking-block-guide {
  margin: 10px 0 0;
  color: var(--text-muted);
  font-size: 0.64rem;
  line-height: 1.75;
}

/* Responsive Styles */

@media (max-width: 700px) {
  .topic-card.main-topic {
    padding: 18px;
    border-radius: 14px;
  }

  .topic-card.main-topic .topic-label {
    margin-top: 12px;
    font-size: 0.94rem;
  }

  .topic-card.main-topic .topic-summary {
    margin-top: 8px;
    font-size: 0.65rem;
    line-height: 1.78;
  }

  #relatedTopicList > .topic-header {
    margin-top: 6px;
  }

  #relatedTopicList > .topic-card.main-topic + .topic-header {
    margin-top: 9px;
  }

  #relatedTopicList [data-topic-phenomenon-id]::after {
    top: 13px;
    right: 12px;
    font-size: 0.45rem;
  }

  #relatedTopicList [data-topic-phenomenon-id] .topic-title {
    padding-right: 30px;
  }

  .topic-block .thinking-block-guide {
    font-size: 0.61rem;
  }
}

@media (max-width: 420px) {
  .topic-card.main-topic {
    padding: 15px;
  }

  .topic-card.main-topic .topic-label {
    font-size: 0.88rem;
  }

  .topic-card.main-topic .topic-summary {
    font-size: 0.62rem;
  }
}

/* Topic detail mobile optimization */

@media (max-width: 700px) {
  #relatedTopicsPanel {
    padding: 14px;
  }

  #relatedTopicList {
    gap: 7px;
    margin-top: 12px;
  }

  .topic-card.main-topic {
    padding: 14px;
    border-radius: 12px;
  }

  .topic-card.main-topic::before {
    width: 3px;
  }

  .topic-card.main-topic::after {
    right: -54px;
    bottom: -54px;
    width: 138px;
    height: 138px;
  }

  .topic-card.main-topic .topic-category {
    min-height: 19px;
    padding: 3px 6px;
    font-size: 0.47rem;
  }

  .topic-card.main-topic .topic-label {
    margin-top: 9px;
    font-size: 0.86rem;
    line-height: 1.4;
  }

  .topic-card.main-topic .topic-summary {
    margin-top: 5px;
    font-size: 0.59rem;
    line-height: 1.6;
  }

  #relatedTopicList > .topic-header {
    padding: 12px 13px;
    border-radius: 11px;
  }

  #relatedTopicList > .topic-card.main-topic + .topic-header {
    margin-top: 5px;
  }

  #relatedTopicList [data-topic-id] + .topic-header,
  #relatedTopicList .empty-message + .topic-header {
    margin-top: 6px;
  }

  #relatedTopicList > .topic-header .topic-category {
    min-height: 19px;
    padding: 3px 6px;
    font-size: 0.46rem;
  }

  #relatedTopicList > .topic-header .topic-title {
    margin-top: 8px;
    font-size: 0.78rem;
    line-height: 1.4;
  }

  #relatedTopicList > .topic-header .topic-summary {
    margin-top: 5px;
    font-size: 0.57rem;
    line-height: 1.55;
  }

  #relatedTopicList .topic-item {
    min-height: 86px;
    padding: 10px 11px;
    border-radius: 11px;
  }

  #relatedTopicList .topic-item::after {
    top: 10px;
    right: 11px;
    font-size: 0.58rem;
  }

  #relatedTopicList .topic-item .topic-category {
    min-height: 19px;
    padding: 3px 6px;
    font-size: 0.46rem;
  }

  #relatedTopicList .topic-item .topic-title,
  #relatedTopicList .topic-item .topic-label {
    margin-top: 8px;
    font-size: 0.67rem;
    line-height: 1.4;
  }

  #relatedTopicList .topic-item .topic-summary {
    margin-top: 4px;
    font-size: 0.55rem;
    line-height: 1.5;
  }

  #relatedTopicList [data-topic-phenomenon-id] {
    min-height: 94px;
  }

  #relatedTopicList [data-topic-phenomenon-id]::after {
    top: 10px;
    right: 11px;
    font-size: 0.42rem;
  }

  #relatedTopicList [data-topic-phenomenon-id] .topic-title {
    padding-right: 34px;
  }

  #relatedTopicList > .empty-message {
    padding: 11px;
    font-size: 0.57rem;
    line-height: 1.55;
  }

  .topic-block .thinking-block-guide {
    margin-top: 7px;
    font-size: 0.58rem;
    line-height: 1.6;
  }
}

@media (max-width: 420px) {
  #relatedTopicsPanel {
    padding: 12px;
  }

  #relatedTopicList {
    gap: 6px;
    margin-top: 10px;
  }

  .topic-card.main-topic {
    padding: 12px;
  }

  .topic-card.main-topic .topic-label {
    font-size: 0.82rem;
  }

  .topic-card.main-topic .topic-summary {
    font-size: 0.57rem;
  }

  #relatedTopicList > .topic-header {
    padding: 11px 12px;
  }

  #relatedTopicList > .topic-header .topic-title {
    font-size: 0.75rem;
  }

  #relatedTopicList > .topic-header .topic-summary {
    font-size: 0.55rem;
  }

  #relatedTopicList .topic-item {
    min-height: 80px;
    padding: 9px 10px;
  }

  #relatedTopicList .topic-item .topic-title,
  #relatedTopicList .topic-item .topic-label {
    font-size: 0.65rem;
  }

  #relatedTopicList .topic-item .topic-summary {
    font-size: 0.53rem;
  }

  #relatedTopicList [data-topic-phenomenon-id] {
    min-height: 88px;
  }
}

/* Topic detail hierarchy refinement - Responsive Overrides */

@media (max-width: 700px) {
  #relatedTopicList > .topic-card.main-topic + .topic-header {
    min-height: 0;
    padding: 10px 12px;
    border-color: #d6e7e0;
    background: #f8fbfa;
  }

  #relatedTopicList > .topic-card.main-topic + .topic-header::after {
    display: none;
  }

  #relatedTopicList > .topic-card.main-topic + .topic-header .topic-category {
    min-height: 18px;
    padding: 3px 6px;
    border-color: #d4dfdb;
    background: #ffffff;
    color: #60716a;
    font-size: 0.55rem;
  }

  #relatedTopicList > .topic-card.main-topic + .topic-header .topic-title {
    margin-top: 7px;
    font-size: 0.75rem;
    line-height: 1.35;
  }

  #relatedTopicList > .topic-card.main-topic + .topic-header .topic-summary {
    margin-top: 4px;
    font-size: 0.65rem;
    line-height: 1.5;
  }

  #relatedTopicList [data-topic-id] {
    min-height: 74px;
    padding: 9px 10px;
  }

  #relatedTopicList [data-topic-id]::after {
    top: 10px;
    right: 10px;
    font-size: 0.55rem;
  }

  #relatedTopicList [data-topic-id] .topic-category {
    min-height: 18px;
    padding: 3px 6px;
    font-size: 0.55rem;
  }

  #relatedTopicList [data-topic-id] .topic-title,
  #relatedTopicList [data-topic-id] .topic-label {
    margin-top: 6px;
    padding-right: 18px;
    font-size: 0.72rem;
    line-height: 1.35;
  }

  #relatedTopicList [data-topic-id] .topic-summary {
    margin-top: 3px;
    font-size: 0.65rem;
    line-height: 1.45;
  }

  #relatedTopicList [data-topic-phenomenon-id] {
    min-height: 82px;
    padding: 10px;
  }

  #relatedTopicList [data-topic-phenomenon-id] .topic-category {
    min-height: 18px;
    padding: 3px 6px;
    font-size: 0.55rem;
  }

  #relatedTopicList [data-topic-phenomenon-id] .topic-title {
    margin-top: 7px;
    font-size: 0.72rem;
    line-height: 1.4;
  }

  #relatedTopicList [data-topic-phenomenon-id] .topic-summary {
    margin-top: 4px;
    font-size: 0.65rem;
    line-height: 1.5;
  }
}

@media (max-width: 420px) {
  #relatedTopicList > .topic-card.main-topic + .topic-header {
    padding: 9px 10px;
  }

  #relatedTopicList > .topic-card.main-topic + .topic-header .topic-title {
    font-size: 0.72rem;
  }

  #relatedTopicList > .topic-card.main-topic + .topic-header .topic-summary {
    font-size: 0.62rem;
  }

  #relatedTopicList [data-topic-id] {
    min-height: 70px;
    padding: 8px 9px;
  }

  #relatedTopicList [data-topic-id] .topic-title,
  #relatedTopicList [data-topic-id] .topic-label {
    font-size: 0.68rem;
  }

  #relatedTopicList [data-topic-id] .topic-summary {
    font-size: 0.6rem;
  }

  #relatedTopicList [data-topic-phenomenon-id] {
    min-height: 78px;
    padding: 9px;
  }

  #relatedTopicList [data-topic-phenomenon-id] .topic-title {
    font-size: 0.68rem;
  }

  #relatedTopicList [data-topic-phenomenon-id] .topic-summary {
    font-size: 0.6rem;
  }
}
/* Bookshelf responsive final override */

@media (max-width: 700px) {
  .related-thinking-section {
    overflow: hidden;
    padding: 20px 0 24px;
  }

  .related-thinking-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    margin: 0 20px;
    padding-bottom: 16px;
  }

  .related-thinking-heading > p {
    max-width: none;
    text-align: left;
  }

  .related-thinking-grid,
  .bookshelf {
    display: flex;
    grid-template-columns: none;
    gap: 9px;
    align-items: flex-end;
    margin-top: 20px;
    padding: 25px 20px 24px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x proximity;
    scroll-padding-left: 20px;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
    scrollbar-width: none;
  }

  .related-thinking-grid::-webkit-scrollbar,
  .bookshelf::-webkit-scrollbar {
    display: none;
  }

  .related-thinking-grid::before,
  .bookshelf::before {
    left: 10px;
    right: 10px;
    bottom: 12px;
  }

  .book,
  .thinking-card {
    width: 142px;
    min-width: 142px;
    min-height: 205px;
    flex: 0 0 142px;
    scroll-snap-align: start;
    padding: 14px 11px 16px 15px;
  }

  .book:hover,
  .thinking-card:hover {
    transform: none;
  }

  .book.is-selected {
    transform: translateY(-5px);
  }

  .book h4,
  .thinking-card h4 {
    margin-top: 14px;
    font-size: 0.72rem;
  }

  .book p,
  .thinking-card p {
    font-size: 0.56rem;
    line-height: 1.6;
  }

  .thinking-card-footer {
    font-size: 0.51rem;
  }
}

@media (max-width: 420px) {
  .related-thinking-section {
    margin-top: 18px;
    padding: 16px 0 21px;
  }

  .related-thinking-heading {
    margin: 0 16px;
    padding-bottom: 14px;
  }

  .related-thinking-heading h3 {
    font-size: 1.02rem;
  }

  .related-thinking-heading > p {
    font-size: 0.62rem;
  }

  .related-thinking-grid,
  .bookshelf {
    gap: 8px;
    margin-top: 17px;
    padding: 22px 16px 22px;
    scroll-padding-left: 16px;
  }

  .book,
  .thinking-card {
    width: 132px;
    min-width: 132px;
    min-height: 194px;
    flex: 0 0 132px;
    padding: 13px 10px 15px 14px;
  }

  .book-type,
  .thinking-card-type {
    font-size: 0.49rem;
  }

  .book h4,
  .thinking-card h4 {
    font-size: 0.69rem;
  }

  .book p,
  .thinking-card p {
    font-size: 0.54rem;
  }
}

/* =========================================================
CARDIUM OVERLAY / SPACE HUD
========================================================= */

body.cardium-open {
  overflow: hidden;
}

.cardium-overlay {
  --cardium-space: #02070d;
  --cardium-space-soft: #06121b;
  --cardium-panel: rgba(5, 18, 27, 0.94);

  --cardium-text: #eafcff;
  --cardium-text-soft: #a1c4cd;
  --cardium-text-muted: #67858e;

  --cardium-cyan: #68f5ff;
  --cardium-green: #55f0bd;
  --cardium-blue: #69aaff;
  --cardium-purple: #bd91ff;
  --cardium-orange: #ffc16e;

  --cardium-line: rgba(104, 245, 255, 0.16);
  --cardium-line-strong: rgba(104, 245, 255, 0.42);

  position: fixed;
  z-index: 200;
  inset: 0;
}

.cardium-overlay[hidden] {
  display: none !important;
}

.cardium-overlay-backdrop {
  position: absolute;
  z-index: 0;
  inset: 0;
  background:
    radial-gradient(
      circle at 50% 42%,
      rgba(61, 205, 220, 0.16) 0%,
      rgba(20, 70, 85, 0.07) 30%,
      transparent 58%
    ),
    radial-gradient(
      circle at 18% 78%,
      rgba(85, 240, 189, 0.07),
      transparent 35%
    ),
    radial-gradient(
      circle at 84% 18%,
      rgba(105, 170, 255, 0.06),
      transparent 30%
    ),
    #02060b;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.cardium-overlay-scroll {
  position: absolute;
  z-index: 1;
  inset: 0;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  padding:
    max(28px, env(safe-area-inset-top))
    24px
    max(38px, env(safe-area-inset-bottom));
}

/* =========================================================
CARDIUM MAIN PANEL
========================================================= */

.cardium-overlay .cardium-section {
  position: relative;
  z-index: 2;
  isolation: isolate;
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 28px;
  overflow: hidden;
  border: 1px solid var(--cardium-line);
  border-radius: 26px;
  background:
    radial-gradient(
      circle at 50% 34%,
      rgba(104, 245, 255, 0.07),
      transparent 42%
    ),
    radial-gradient(
      circle at 82% 18%,
      rgba(85, 240, 189, 0.04),
      transparent 30%
    ),
    linear-gradient(
      145deg,
      rgba(7, 20, 29, 0.97),
      rgba(2, 10, 17, 0.98)
    );
  color: var(--cardium-text);
  box-shadow:
    0 42px 110px rgba(0, 0, 0, 0.62),
    0 0 90px rgba(104, 245, 255, 0.055),
    inset 0 1px 0 rgba(255, 255, 255, 0.045);
}

.cardium-overlay .cardium-section::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  background:
    linear-gradient(
      rgba(104, 245, 255, 0.03) 1px,
      transparent 1px
    ),
    linear-gradient(
      90deg,
      rgba(104, 245, 255, 0.03) 1px,
      transparent 1px
    );
  background-size: 40px 40px;
  opacity: 0.72;
  mask-image:
    radial-gradient(
      ellipse at center,
      #000 0%,
      rgba(0, 0, 0, 0.68) 50%,
      transparent 90%
    );
  -webkit-mask-image:
    radial-gradient(
      ellipse at center,
      #000 0%,
      rgba(0, 0, 0, 0.68) 50%,
      transparent 90%
    );
  pointer-events: none;
}

.cardium-overlay .cardium-section::after {
  content: "";
  position: absolute;
  z-index: 0;
  top: -180px;
  left: 50%;
  width: 620px;
  height: 350px;
  border-radius: 50%;
  background:
    radial-gradient(
      ellipse at center,
      rgba(104, 245, 255, 0.065),
      transparent 68%
    );
  filter: blur(28px);
  transform: translateX(-50%);
  pointer-events: none;
}

.cardium-overlay-topbar {
  position: relative;
  z-index: 8;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--cardium-line);
}

.cardium-overlay-kicker {
  margin: 0;
  color: var(--cardium-cyan);
  font-size: 0.55rem;
  font-weight: 900;
  line-height: 1.4;
  letter-spacing: 0.14em;
}

.cardium-overlay-guide {
  margin: 5px 0 0;
  color: var(--cardium-text-muted);
  font-size: 0.59rem;
  line-height: 1.55;
}

.cardium-overlay-close {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--cardium-line-strong);
  border-radius: 12px;
  background: rgba(8, 28, 38, 0.78);
  color: var(--cardium-text-soft);
  font-size: 0.65rem;
  font-weight: 900;
  cursor: pointer;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 0 16px rgba(104, 245, 255, 0.04);
  transition:
    border-color 0.2s ease,
    background 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease;
}

.cardium-overlay-close:hover {
  border-color: var(--cardium-cyan);
  background: rgba(10, 40, 50, 0.92);
  color: var(--cardium-cyan);
  box-shadow:
    0 0 18px rgba(104, 245, 255, 0.16);
}

.cardium-overlay .cardium-section .section-heading {
  position: relative;
  z-index: 5;
  margin: 20px 0 24px;
}

.cardium-overlay .cardium-section .section-heading-copy {
position: relative;
z-index: 1;
width: 100%;
}

.cardium-overlay .eyebrow {
  color: var(--cardium-cyan);
}

.cardium-overlay .section-title {
  color: var(--cardium-text);
}

.cardium-overlay .section-description {
  color: var(--cardium-text-soft);
}

/* =========================================================
CARDIUM VIEWPORT
========================================================= */

.cardium-overlay .cardium-viewport {
  position: relative;
  z-index: 3;
  width: 100%;
  min-height: 560px;
  overflow: hidden;
  border: 1px solid var(--cardium-line);
  border-radius: 20px;
  background:
    radial-gradient(
      circle at 50% 50%,
      rgba(85, 240, 189, 0.075),
      transparent 30%
    ),
    radial-gradient(
      circle at 50% 50%,
      rgba(104, 245, 255, 0.04),
      transparent 58%
    ),
    radial-gradient(
      circle at 18% 20%,
      rgba(105, 170, 255, 0.035),
      transparent 25%
    ),
    rgba(1, 7, 13, 0.82);
  box-shadow:
    inset 0 0 100px rgba(0, 0, 0, 0.56),
    inset 0 1px 0 rgba(255, 255, 255, 0.025);
}

.cardium-overlay .cardium-viewport::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: 50%;
  left: 50%;
  width: min(66vw, 760px);
  aspect-ratio: 1;
  border: 1px solid rgba(104, 245, 255, 0.07);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow:
    0 0 0 70px rgba(104, 245, 255, 0.009),
    0 0 0 140px rgba(104, 245, 255, 0.005);
  pointer-events: none;
}

.cardium-overlay .cardium-viewport::after {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  background:
    linear-gradient(
      112deg,
      transparent 10%,
      rgba(104, 245, 255, 0.025) 42%,
      transparent 62%
    );
  pointer-events: none;
}

/* =========================================================
CARDIUM CONNECTIONS
========================================================= */

.cardium-connections {
  position: absolute;
  z-index: 2;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}

.cardium-connection {
  fill: none;
  stroke: rgba(104, 245, 255, 0.18);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
  transition:
    stroke 180ms ease,
    stroke-width 180ms ease,
    opacity 180ms ease;
}

.cardium-connection.is-primary {
  stroke: rgba(104, 245, 255, 0.58);
  stroke-width: 1.6;
  filter:
    drop-shadow(
      0 0 5px rgba(104, 245, 255, 0.30)
    );
}

.cardium-connection.is-active-path {
  stroke: rgba(85, 240, 189, 0.96);
  stroke-width: 2.4;
  opacity: 1;
  filter:
    drop-shadow(
      0 0 8px rgba(85, 240, 189, 0.48)
    );
}

/* =========================================================
CARDIUM NODES
========================================================= */

.cardium-nodes {
  position: absolute;
  z-index: 3;
  inset: 0;
}

.cardium-node {
  position: absolute;
  width: 150px;
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px 16px;
  border: 1px solid rgba(104, 245, 255, 0.26);
  border-radius: 14px;
  background:
    linear-gradient(
      145deg,
      rgba(9, 29, 39, 0.91),
      rgba(4, 16, 24, 0.82)
    );
  color: var(--cardium-text);
  text-align: center;
  cursor: pointer;
  transform: translate(-50%, -50%);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow:
    0 14px 32px rgba(0, 0, 0, 0.38),
    0 0 18px rgba(104, 245, 255, 0.045),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
}

.cardium-node:hover,
.cardium-node:focus-visible {
  z-index: 7;
  border-color: var(--cardium-cyan);
  background:
    linear-gradient(
      145deg,
      rgba(11, 43, 54, 0.96),
      rgba(4, 20, 29, 0.94)
    );
  box-shadow:
    0 18px 42px rgba(0, 0, 0, 0.46),
    0 0 28px rgba(104, 245, 255, 0.18),
    inset 0 0 16px rgba(104, 245, 255, 0.025);
  transform:
    translate(-50%, -54%)
    scale(1.045);
}

.cardium-node:focus-visible {
  outline: 2px solid var(--cardium-cyan);
  outline-offset: 3px;
}

.cardium-node.is-active-path {
  border-color: rgba(85, 240, 189, 0.64);
}

.cardium-node.is-current {
  z-index: 6;
  border-color: var(--cardium-green);
  background:
    linear-gradient(
      145deg,
      rgba(8, 43, 40, 0.97),
      rgba(4, 22, 27, 0.95)
    );
  box-shadow:
    0 20px 46px rgba(0, 0, 0, 0.48),
    0 0 0 1px rgba(85, 240, 189, 0.14),
    0 0 34px rgba(85, 240, 189, 0.19);
}

.cardium-node.is-center {
  width: 184px;
  min-height: 96px;
  border-color: var(--cardium-green);
  border-radius: 18px;
  background:
    radial-gradient(
      circle at 50% 0%,
      rgba(85, 240, 189, 0.14),
      transparent 60%
    ),
    linear-gradient(
      145deg,
      rgba(7, 39, 38, 0.98),
      rgba(3, 18, 24, 0.96)
    );
  box-shadow:
    0 24px 54px rgba(0, 0, 0, 0.50),
    0 0 44px rgba(85, 240, 189, 0.17);
}

.cardium-node.is-center::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 50%;
  left: 50%;
  width: 128%;
  aspect-ratio: 1;
  border: 1px solid rgba(85, 240, 189, 0.10);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.cardium-node-inner {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 100%;
}

.cardium-node-type {
  color: var(--cardium-cyan);
  font-size: 0.60rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.cardium-node-title {
  color: var(--cardium-text);
  font-size: 0.84rem;
  font-weight: 760;
  line-height: 1.45;
}

.cardium-node-code {
  color: var(--cardium-text-muted);
  font-size: 0.55rem;
  font-weight: 700;
  line-height: 1.3;
}

.cardium-node.is-center .cardium-node-type {
  color: var(--cardium-green);
}

.cardium-node.is-center .cardium-node-title {
  color: #f2fffb;
  font-size: 0.98rem;
}

/* Type accents */

.cardium-node[data-type="phenomenon"] {
  border-color: rgba(85, 240, 189, 0.62);
}

.cardium-node[data-type="topic"] {
  border-color: rgba(104, 245, 255, 0.48);
}

.cardium-node[data-type="research"] {
  border-color: rgba(189, 145, 255, 0.52);
}

.cardium-node[data-type="research"] .cardium-node-type {
  color: var(--cardium-purple);
}

.cardium-node[data-type="pds"] {
  border-color: rgba(85, 240, 189, 0.52);
}

.cardium-node[data-type="pds"] .cardium-node-type {
  color: var(--cardium-green);
}

.cardium-node[data-type="case"] {
  border-color: rgba(255, 193, 110, 0.50);
}

.cardium-node[data-type="case"] .cardium-node-type {
  color: var(--cardium-orange);
}

.cardium-node[data-type="dictionary"] {
  border-color: rgba(161, 196, 205, 0.42);
}

/* =========================================================
CARDIUM EMPTY
========================================================= */

.cardium-empty {
  position: absolute;
  z-index: 4;
  top: 50%;
  left: 50%;
  width: min(420px, calc(100% - 40px));
  padding: 20px;
  border: 1px dashed var(--cardium-line-strong);
  border-radius: 15px;
  background: rgba(5, 21, 29, 0.88);
  color: var(--cardium-text-soft);
  text-align: center;
  line-height: 1.7;
  transform: translate(-50%, -50%);
}

.cardium-empty[hidden] {
  display: none;
}

/* =========================================================
CARDIUM FOCUS
========================================================= */

.cardium-focus {
  --cardium-focus-color: var(--cardium-cyan);

  position: relative;
  z-index: 4;
  margin-top: 18px;
  overflow: hidden;
  border: 1px solid var(--cardium-line);
  border-radius: 17px;
  background:
    radial-gradient(
      circle at 92% 18%,
      rgba(104, 245, 255, 0.055),
      transparent 34%
    ),
    rgba(4, 17, 25, 0.90);
  color: var(--cardium-text);
  box-shadow:
    0 18px 42px rgba(0, 0, 0, 0.38),
    inset 0 1px 0 rgba(255, 255, 255, 0.035);
}

.cardium-overlay .cardium-focus {
position:absolute;
top:0;
right:0;
bottom:auto;
left:0;
z-index:8;
width:100%;
height:auto;
max-height:none;
margin:0;
overflow:visible;
transform:none;
background:rgba(4,17,25,0.97);
backdrop-filter:blur(12px);
-webkit-backdrop-filter:blur(12px);
border:1px solid rgba(104,245,255,0.2);
border-radius:17px;
box-shadow:
0 18px 42px rgba(0,0,0,0.46),
0 0 32px rgba(104,245,255,0.10),
inset 0 1px 0 rgba(255,255,255,0.035);
}



.cardium-focus[hidden] {
  display: none;
}

.cardium-focus::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: var(--cardium-focus-color);
  box-shadow: 0 0 14px var(--cardium-focus-color);
}

.cardium-focus[data-type="phenomenon"] {
  --cardium-focus-color: var(--cardium-green);
}

.cardium-focus[data-type="topic"] {
  --cardium-focus-color: var(--cardium-cyan);
}

.cardium-focus[data-type="research"] {
  --cardium-focus-color: var(--cardium-purple);
}

.cardium-focus[data-type="pds"] {
  --cardium-focus-color: var(--cardium-green);
}

.cardium-focus[data-type="case"] {
  --cardium-focus-color: var(--cardium-orange);
}

.cardium-focus[data-type="dictionary"] {
  --cardium-focus-color: var(--cardium-text-soft);
}

.cardium-focus-head {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 22px 0 24px;
}

.cardium-focus-head > div {
  min-width: 0;
}

.cardium-focus-type {
  margin: 0;
  color: var(--cardium-focus-color);
  font-size: 0.56rem;
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.cardium-focus-title {
  margin: 8px 0 0;
  color: var(--cardium-text);
  font-size: 1.18rem;
  font-weight: 850;
  line-height: 1.45;
}

.cardium-focus-close {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--cardium-line);
  border-radius: 10px;
  background: rgba(8, 30, 40, 0.82);
  color: var(--cardium-text-muted);
  cursor: pointer;
}

.cardium-focus-close:hover {
  border-color: var(--cardium-cyan);
  color: var(--cardium-cyan);
}

.cardium-focus-summary {
  position: relative;
  z-index: 1;
  max-width: 820px;
  margin: 14px 24px 0;
  color: var(--cardium-text-soft);
  font-size: 0.72rem;
  line-height: 1.82;
}

.cardium-focus-summary:empty {
  display: none;
}

.cardium-focus-meta {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 16px 24px 0;
}

.cardium-focus-meta:empty {
  display: none;
}

.cardium-focus-meta-item {
  display: inline-flex;
  align-items: center;
  min-height: 25px;
  padding: 4px 8px;
  border: 1px solid var(--cardium-line);
  border-radius: 999px;
  background: rgba(7, 28, 37, 0.78);
  color: var(--cardium-text-muted);
  font-size: 0.55rem;
  font-weight: 800;
}

.cardium-focus-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
  padding: 17px 24px 22px;
  border-top: 1px solid var(--cardium-line);
}

.cardium-focus-actions:empty {
  display: none;
}

.cardium-focus-action {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 13px;
  border: 1px solid var(--cardium-line-strong);
  border-radius: 10px;
  background: rgba(7, 27, 37, 0.84);
  color: var(--cardium-text-soft);
  font-size: 0.62rem;
  font-weight: 850;
  cursor: pointer;
}

.cardium-focus-action:hover {
  border-color: var(--cardium-cyan);
  color: var(--cardium-text);
}

.cardium-focus-action.is-primary {
  border-color: var(--cardium-focus-color);
  background: color-mix(
    in srgb,
    var(--cardium-focus-color) 18%,
    rgba(5, 20, 28, 0.94)
  );
  color: var(--cardium-text);
  box-shadow:
    0 0 18px
    color-mix(
      in srgb,
      var(--cardium-focus-color) 18%,
      transparent
    );
}

/* =========================================================
CARDIUM OPEN ANIMATION
========================================================= */

.cardium-overlay:not([hidden]) .cardium-overlay-backdrop {
  animation: cardiumBackdropIn 0.22s ease both;
}

.cardium-overlay:not([hidden]) .cardium-section {
animation: cardiumPanelIn 0.30s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes cardiumBackdropIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes cardiumPanelIn {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* =========================================================
CARDIUM RESPONSIVE
========================================================= */

@media (max-width: 900px) {
  .cardium-overlay-scroll {
    padding:
      max(20px, env(safe-area-inset-top))
      18px
      max(28px, env(safe-area-inset-bottom));
  }

  .cardium-overlay .cardium-section {
    padding: 22px;
  }

  .cardium-overlay .cardium-viewport {
    min-height: 520px;
  }

  .cardium-node {
    width: 136px;
    min-height: 68px;
    padding: 12px 14px;
  }

  .cardium-node.is-center {
    width: 164px;
    min-height: 84px;
  }
}

@media (max-width: 700px) {
  /* スクロールコンテナのセーフエリア対応 */
  .cardium-overlay-scroll {
    padding: 
      max(10px, env(safe-area-inset-top))
      8px
      max(16px, env(safe-area-inset-bottom));
  }

  /* セクション全体の最小高さ調整（ビューポート対応） */
  .cardium-overlay .cardium-section {
    width: 100%;
    min-height: calc(
      100dvh -
      max(20px, env(safe-area-inset-top)) -
      max(24px, env(safe-area-inset-bottom))
    );
    padding: 15px;
    border-radius: 20px;
  }

  /* トップバー & コントロール */
  .cardium-overlay-topbar {
    gap: 12px;
    padding-bottom: 13px;
  }

  .cardium-overlay-guide {
    font-size: 0.54rem;
  }

  .cardium-overlay-close {
    width: 38px;
    height: 38px;
    flex-basis: 38px;
  }

  /* 見出し & 説明テキスト */
  .cardium-overlay .cardium-section .section-heading {
    margin: 17px 0 18px;
  }

  .cardium-overlay .section-title {
    font-size: 1.42rem;
  }

  .cardium-overlay .section-description {
    font-size: 0.66rem;
    line-height: 1.7;
  }

  /* マップビューポート */
  .cardium-overlay .cardium-viewport {
    min-height: 480px;
    border-radius: 16px;
  }

  .cardium-overlay .cardium-viewport::before {
    width: 480px;
  }

  /* カードノード（通常 & 中央強調ノード） */
  .cardium-node {
    width: 112px;
    min-height: 62px;
    padding: 10px;
    border-radius: 12px;
  }

  .cardium-node.is-center {
    width: 140px;
    min-height: 78px;
    border-radius: 15px;
  }

  .cardium-node-type {
    font-size: 0.54rem;
  }

  .cardium-node-title {
    font-size: 0.71rem;
  }

  .cardium-node.is-center .cardium-node-title {
    font-size: 0.82rem;
  }

  /* フォーカスパネル（フローティングダイアログ） */
  .cardium-overlay .cardium-focus {
    left: 12px;
    right: 12px;
    bottom: calc(12px + env(safe-area-inset-bottom));
    width: auto;
    max-height: 38vh;
    margin: 0;
    transform: none;
  }

  .cardium-focus-head {
    gap: 14px;
    padding: 17px 16px 0 18px;
  }

  .cardium-focus-title {
    font-size: 0.96rem;
  }

  .cardium-focus-summary {
    margin: 11px 18px 0;
    font-size: 0.65rem;
  }

  .cardium-focus-meta {
    margin: 13px 18px 0;
  }

  .cardium-focus-actions {
    padding: 14px 18px 17px;
  }
}



@media (max-width: 420px) {
  /* 外周スクロールの余白縮小 */
  .cardium-overlay-scroll {
    padding:
      max(6px, env(safe-area-inset-top))
      5px
      max(10px, env(safe-area-inset-bottom));
  }

  /* セクションカードのコンテナ調整 */
  .cardium-overlay .cardium-section {
    padding: 12px;
    border-radius: 17px;
  }

  /* マップビューポートの最小高さと背景円の調整 */
  .cardium-overlay .cardium-viewport {
    min-height: 450px;
  }

  .cardium-overlay .cardium-viewport::before {
    width: 410px;
  }

  /* カードノードの小型化 */
  .cardium-node {
    width: 100px;
    min-height: 58px;
    padding: 9px;
  }

  .cardium-node.is-center {
    width: 128px;
    min-height: 72px;
  }

  /* フォーカスパネルの配置と高さを超小型画面に最適化 */
  .cardium-overlay .cardium-focus {
    left: 8px;
    right: 8px;
    bottom: calc(8px + env(safe-area-inset-bottom));
    max-height: 40vh;
  }

  /* アクションボタン群を横並びから1列（全幅）に切り替え */
  .cardium-focus-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .cardium-focus-action {
    width: 100%;
  }
}



@media (hover: none) {
  .cardium-node:hover {
    transform: translate(-50%, -50%);
  }

  .cardium-focus-action:hover,
  .cardium-overlay-close:hover {
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cardium-overlay:not([hidden]) .cardium-overlay-backdrop,
  .cardium-overlay:not([hidden]) .cardium-section {
    animation: none !important;
  }
}

    
/* =========================================================
CARDIUM ENTRY
Thinking Flow -> Cardium -> Archive
========================================================= */

.cardium-entry {
  position: relative;
  width: 100%;
  margin-top: 28px;
  overflow: hidden;
  border: 1px solid rgba(25, 121, 94, 0.2);
  border-radius: 26px;
  background:
    radial-gradient(
      circle at 86% 22%,
      rgba(65, 196, 158, 0.15),
      transparent 34%
    ),
    linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.98) 0%,
      rgba(247, 252, 250, 0.98) 56%,
      rgba(238, 249, 245, 0.98) 100%
    );
  box-shadow:
    0 18px 46px rgba(26, 52, 44, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.cardium-entry[hidden] {
  display: none !important;
}

.cardium-entry-background {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.cardium-entry-background::before {
  content: "";
  position: absolute;
  top: 0;
  right: 32%;
  bottom: 0;
  width: 1px;
  background: linear-gradient(
    to bottom,
    transparent,
    rgba(29, 139, 108, 0.12),
    transparent
  );
}

.cardium-entry-background::after {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  top: 50%;
  right: -100px;
  border-radius: 50%;
  transform: translateY(-50%);
  background: radial-gradient(
    circle,
    rgba(48, 184, 145, 0.1) 0%,
    rgba(48, 184, 145, 0.03) 38%,
    transparent 70%
  );
}

.cardium-entry-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(250px, 0.55fr);
  gap: 48px;
  align-items: center;
  min-height: 290px;
  padding: 42px 46px;
}

.cardium-entry-copy {
  min-width: 0;
}

.cardium-entry-label {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 18px;
  color: #18775d;
  font-size: 11px;
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: 0.16em;
}

.cardium-entry-label-dot {
  display: block;
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: #32b98f;
  box-shadow: 0 0 0 5px rgba(50, 185, 143, 0.1);
}

.cardium-entry-title {
  margin: 0;
  color: #17221e;
  font-size: clamp(26px, 3vw, 39px);
  font-weight: 750;
  line-height: 1.3;
  letter-spacing: -0.035em;
}

.cardium-entry-description {
  max-width: 680px;
  margin: 20px 0 0;
  color: #52615c;
  font-size: 14px;
  line-height: 1.95;
}

.cardium-entry-signals {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 24px;
}

.cardium-entry-signals span {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 4px 9px;
  border: 1px solid rgba(31, 105, 84, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.66);
  color: #587068;
  font-size: 9px;
  font-weight: 750;
  line-height: 1;
  letter-spacing: 0.1em;
}

.cardium-entry-action {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  min-width: 0;
}

.cardium-entry-action-label {
  margin: 0 0 10px;
  color: #74837e;
  font-size: 9px;
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: 0.16em;
}

.cardium-entry .cardium-launch-button {
  position: relative;
  display: flex;
  width: 100%;
  min-height: 96px;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  margin: 0;
  padding: 21px 22px 21px 24px;
  overflow: hidden;
  border: 1px solid rgba(26, 132, 101, 0.26);
  border-radius: 18px;
  appearance: none;
  background:
    linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.98),
      rgba(226, 247, 240, 0.98)
    );
  box-shadow:
    0 10px 28px rgba(25, 111, 85, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  color: #173a30;
  text-align: left;
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}

.cardium-entry .cardium-launch-button::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 4px;
  background: #30b88d;
}

.cardium-entry .cardium-launch-button::after {
  content: "";
  position: absolute;
  width: 110px;
  height: 110px;
  top: 50%;
  right: -42px;
  border-radius: 50%;
  transform: translateY(-50%);
  background: rgba(47, 186, 143, 0.08);
  transition: transform 220ms ease;
}

.cardium-launch-button-copy {
  position: relative;
  z-index: 1;
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 6px;
}

.cardium-launch-button-copy strong {
  color: #163b30;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.35;
}

.cardium-launch-button-copy small {
  color: #64736e;
  font-size: 11px;
  font-weight: 500;
  line-height: 1.5;
}

.cardium-entry .cardium-launch-arrow {
  position: relative;
  z-index: 1;
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  place-items: center;
  border: 1px solid rgba(24, 117, 90, 0.2);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.78);
  color: #176e55;
  font-size: 20px;
  line-height: 1;
  transition:
    transform 180ms ease,
    background 180ms ease;
}

.cardium-entry .cardium-launch-button:hover {
  transform: translateY(-2px);
  border-color: rgba(26, 132, 101, 0.42);
  background:
    linear-gradient(
      135deg,
      #ffffff,
      #dcf5ed
    );
  box-shadow:
    0 15px 34px rgba(25, 111, 85, 0.13),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

.cardium-entry .cardium-launch-button:hover::after {
  transform: translateY(-50%) scale(1.16);
}

.cardium-entry .cardium-launch-button:hover .cardium-launch-arrow {
  transform: translateX(3px);
  background: #ffffff;
}

.cardium-entry .cardium-launch-button:focus-visible {
  outline: 3px solid rgba(43, 174, 133, 0.28);
  outline-offset: 4px;
}

.cardium-entry-action-guide {
  margin: 11px 2px 0;
  color: #84908c;
  font-size: 9px;
  line-height: 1.6;
}

.cardium-entry-orbit {
  position: absolute;
  display: block;
  border: 1px solid rgba(38, 151, 117, 0.1);
  border-radius: 50%;
}

.cardium-entry-orbit-01 {
  width: 250px;
  height: 250px;
  top: 50%;
  right: 4%;
  transform: translateY(-50%);
}

.cardium-entry-orbit-02 {
  width: 170px;
  height: 170px;
  top: 50%;
  right: 7%;
  transform: translateY(-50%);
}

.cardium-entry-node {
  position: absolute;
  display: block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(37, 163, 124, 0.42);
  box-shadow: 0 0 0 5px rgba(37, 163, 124, 0.05);
}

.cardium-entry-node-01 {
  top: 22%;
  right: 15%;
}

.cardium-entry-node-02 {
  top: 42%;
  right: 4.5%;
}

.cardium-entry-node-03 {
  right: 19%;
  bottom: 19%;
}

.cardium-entry-node-04 {
  right: 30%;
  bottom: 32%;
}

@media (max-width: 900px) {
  .cardium-entry {
    margin-top: 22px;
    border-radius: 22px;
  }

  .cardium-entry-inner {
    grid-template-columns: 1fr;
    gap: 30px;
    min-height: 0;
    padding: 34px 30px;
  }

  .cardium-entry-background::before {
    display: none;
  }

  .cardium-entry-action {
    max-width: 480px;
  }

  .cardium-entry-orbit-01 {
    right: -80px;
  }

  .cardium-entry-orbit-02 {
    right: -40px;
  }

  .cardium-entry-node-01,
  .cardium-entry-node-02,
  .cardium-entry-node-03,
  .cardium-entry-node-04 {
    opacity: 0.5;
  }
}

@media (max-width: 600px) {
  .cardium-entry {
    margin-top: 18px;
    border-radius: 18px;
  }

  .cardium-entry-inner {
    gap: 26px;
    padding: 28px 20px 22px;
  }

  .cardium-entry-label {
    margin-bottom: 14px;
    font-size: 9px;
  }

  .cardium-entry-title {
    font-size: 25px;
    line-height: 1.38;
  }

  .cardium-entry-description {
    margin-top: 15px;
    font-size: 13px;
    line-height: 1.85;
  }

  .cardium-entry-signals {
    gap: 6px;
    margin-top: 19px;
  }

  .cardium-entry-signals span {
    min-height: 24px;
    padding: 4px 8px;
    font-size: 8px;
  }

  .cardium-entry .cardium-launch-button {
    min-height: 88px;
    padding: 18px 17px 18px 20px;
    border-radius: 15px;
  }

  .cardium-launch-button-copy strong {
    font-size: 15px;
  }

  .cardium-launch-button-copy small {
    font-size: 10px;
  }

  .cardium-entry .cardium-launch-arrow {
    width: 38px;
    height: 38px;
    flex-basis: 38px;
    font-size: 18px;
  }

  .cardium-entry-orbit,
  .cardium-entry-node {
    opacity: 0.34;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cardium-entry .cardium-launch-button,
  .cardium-entry .cardium-launch-button::after,
  .cardium-entry .cardium-launch-arrow {
    transition: none;
  }
}

/* =========================================================
CARDIUM FOCUS FINAL OVERRIDE
========================================================= */

@media (max-width: 700px) {
.cardium-overlay .cardium-focus {
top: 0;
right: 0;
bottom: 0;
left: 0;
width: 100%;
max-height: none;
height: 100%;
margin: 0;

overflow-x: hidden;
overflow-y: auto;

border-radius: 16px;
transform: none;
}
}

@media (max-width: 420px) {
.cardium-overlay .cardium-focus {
top: 0;
right: 0;
bottom: 0;
left: 0;
width: 100%;
max-height: none;
height: 100%;
margin: 0;

border-radius: 14px;
}
}

.cardium-node {
transition:
opacity 180ms ease,
filter 180ms ease,
transform 180ms ease,
border-color 180ms ease,
box-shadow 180ms ease;
}

.cardium-node.is-dimmed {
opacity:0.34;
filter:saturate(0.55);
}

.cardium-node.is-active-path {
opacity:1;
filter:none;
}

.cardium-node.is-current {
z-index:6;
opacity:1;
filter:none;
box-shadow:
0 0 0 1px rgba(104,245,255,0.34),
0 0 24px rgba(104,245,255,0.20),
0 14px 32px rgba(0,0,0,0.34);
}

.cardium-node.is-current .cardium-node-inner {
transform:scale(1.035);
}

.cardium-connection {
transition:
opacity 180ms ease,
stroke 180ms ease,
stroke-width 180ms ease;
}

.cardium-connection.is-dimmed {
opacity:0.16;
}

.cardium-connection.is-active-path {
opacity:1;
stroke:rgba(104,245,255,0.88);
}