:root {
  --paper: #f5f0e8;
  --paper-deep: #ebe4d8;
  --surface: #fffdf8;
  --surface-blue: #edf3f4;
  --ink: #1b2730;
  --navy: #12314a;
  --navy-deep: #0c263a;
  --green: #587d43;
  --green-bright: #c9e7a7;
  --clay: #b87345;
  --clay-light: #edc5ab;
  --muted: #68747c;
  --line: rgba(18, 49, 74, 0.14);
  --line-light: rgba(255, 255, 255, 0.16);
  --shadow: 0 24px 70px rgba(7, 27, 40, 0.16);
  --display: "Iowan Old Style", "Palatino Linotype", "Songti SC", "Noto Serif CJK SC", Georgia, serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  --shell: min(1240px, calc(100vw - 48px));
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body[data-lang="zh"] .i18n-en,
body[data-lang="en"] .i18n-zh {
  display: none !important;
}

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

button,
input {
  font: inherit;
}

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

button {
  color: inherit;
}

a {
  color: inherit;
}

::selection {
  background: var(--green-bright);
  color: var(--navy-deep);
}

:focus-visible {
  outline: 3px solid #d79a5f;
  outline-offset: 4px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  border-radius: 8px;
  background: var(--surface);
  color: var(--navy-deep);
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

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

.watch-progress {
  position: fixed;
  z-index: 1001;
  inset: 0 0 auto;
  height: 3px;
  pointer-events: none;
}

.watch-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--clay);
  transition: width 500ms linear;
}

.section-shell,
.nav-shell,
.hero-grid {
  width: var(--shell);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.11);
  background: rgba(12, 38, 58, 0.94);
  color: #fff;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.nav-shell {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: 76px;
  gap: 34px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 12px 12px 12px 3px;
  background: var(--green-bright);
  color: var(--navy-deep);
  font-family: var(--display);
  font-size: 20px;
  font-style: italic;
  font-weight: 800;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.08;
}

.brand-copy strong {
  font-size: 14px;
  letter-spacing: 0.025em;
}

.brand-copy span {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  justify-content: center;
  gap: clamp(18px, 3vw, 42px);
}

.main-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  font-weight: 650;
  text-decoration: none;
  transition: color 180ms ease;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 1px;
  background: var(--green-bright);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 240ms var(--ease);
}

.main-nav a:hover {
  color: #fff;
}

.main-nav a:hover::after {
  transform: scaleX(1);
}

.language-switch {
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  padding: 3px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
}

.language-switch button {
  min-width: 48px;
  min-height: 38px;
  padding: 0 11px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: rgba(255, 255, 255, 0.62);
  cursor: pointer;
  font-size: 12px;
  font-weight: 750;
}

.language-switch button[aria-pressed="true"] {
  background: var(--surface);
  color: var(--navy-deep);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 72px;
  background: var(--navy-deep);
  color: #fff;
}

.hero::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.026) 1px, transparent 1px);
  background-size: 48px 48px;
  content: "";
  mask-image: linear-gradient(to bottom, #000, transparent 90%);
  pointer-events: none;
}

.hero::after {
  position: absolute;
  width: 520px;
  height: 520px;
  top: -300px;
  left: 28%;
  border: 1px solid rgba(201, 231, 167, 0.15);
  border-radius: 50%;
  box-shadow: 0 0 0 80px rgba(201, 231, 167, 0.025), 0 0 0 160px rgba(201, 231, 167, 0.02);
  content: "";
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(340px, 0.78fr) minmax(560px, 1.22fr);
  align-items: center;
  gap: clamp(48px, 6vw, 92px);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--clay);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero .eyebrow,
.entry-section .eyebrow,
.closing-card .eyebrow {
  color: var(--green-bright);
}

.hero h1 {
  max-width: 650px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(56px, 5.3vw, 78px);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 0.99;
}

.hero h1 em {
  color: var(--green-bright);
  font-weight: inherit;
}

.hero-lede {
  max-width: 560px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 17px;
  line-height: 1.75;
}

.hero-actions,
.closing-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 750;
  gap: 10px;
  line-height: 1.2;
  text-decoration: none;
  transition: transform 240ms var(--ease), background 200ms ease, border-color 200ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--green-bright);
  color: var(--navy-deep);
}

.button-quiet {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
}

.button-quiet:hover {
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.08);
}

.play-dot {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  font-size: 8px;
}

.hero-proof {
  display: flex;
  gap: 0;
  margin-top: 44px;
}

.hero-proof > span {
  display: flex;
  min-width: 108px;
  flex-direction: column;
  padding-right: 22px;
  border-right: 1px solid rgba(255, 255, 255, 0.14);
  margin-right: 22px;
}

.hero-proof > span:last-child {
  padding-right: 0;
  border: 0;
  margin-right: 0;
}

.hero-proof strong {
  font-family: var(--display);
  font-size: 25px;
  font-weight: 500;
  line-height: 1;
}

.hero-proof small {
  margin-top: 7px;
  color: rgba(255, 255, 255, 0.52);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.player-column {
  min-width: 0;
}

.player-shell {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 20px;
  background: #07141e;
  box-shadow: var(--shadow);
}

.player-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 46px;
  padding: 0 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.62);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.live-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.live-pill i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green-bright);
  box-shadow: 0 0 0 4px rgba(201, 231, 167, 0.12);
}

.video-wrap {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #050b10;
}

.video-wrap video {
  width: 100%;
  height: 100%;
  background: #050b10;
  object-fit: contain;
}

.media-error {
  position: absolute;
  z-index: 5;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 30px;
  background: rgba(7, 20, 30, 0.96);
  color: #fff;
  text-align: center;
}

.media-error[hidden] {
  display: none;
}

.media-error strong {
  font-family: var(--display);
  font-size: clamp(24px, 4vw, 38px);
  font-weight: 500;
}

.media-error span {
  max-width: 520px;
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 12px;
}

.media-error button {
  min-width: 90px;
  min-height: 44px;
  margin-top: 20px;
  padding: 0 16px;
  border: 0;
  border-radius: 999px;
  background: var(--green-bright);
  color: var(--navy-deep);
  cursor: pointer;
  font-size: 11px;
  font-weight: 750;
}

.player-tools {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 54px;
  padding: 6px 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.tool-group {
  display: flex;
  gap: 4px;
}

.player-tools button,
.player-tools a {
  display: inline-flex;
  min-width: 44px;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: rgba(255, 255, 255, 0.68);
  cursor: pointer;
  font-size: 11px;
  font-weight: 720;
  text-decoration: none;
  transition: color 180ms ease, background 180ms ease;
}

.player-tools button:hover,
.player-tools a:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.guided-mode {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 66px;
  padding: 10px 14px;
  border-top: 1px solid rgba(201, 231, 167, 0.24);
  background: rgba(201, 231, 167, 0.09);
}

.guided-mode[hidden] {
  display: none;
}

.guided-mode > div {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.guided-kicker {
  color: var(--green-bright);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.guided-mode strong {
  overflow: hidden;
  margin-top: 2px;
  color: #fff;
  font-size: 13px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.guided-mode button {
  min-height: 40px;
  padding: 0 13px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: transparent;
  color: rgba(255, 255, 255, 0.74);
  cursor: pointer;
  font-size: 10px;
  font-weight: 750;
}

.resume-card {
  position: absolute;
  z-index: 4;
  right: 14px;
  bottom: 68px;
  left: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 15px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 13px;
  background: rgba(7, 20, 30, 0.94);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.32);
  backdrop-filter: blur(12px);
}

.resume-card[hidden] {
  display: none;
}

.resume-card > div:first-child {
  display: flex;
  flex-direction: column;
}

.resume-label {
  color: rgba(255, 255, 255, 0.48);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.resume-card strong {
  margin-top: 2px;
  color: #fff;
  font-size: 17px;
}

.resume-card > div:last-child {
  display: flex;
  gap: 5px;
}

.resume-card button {
  min-height: 40px;
  padding: 0 13px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: rgba(255, 255, 255, 0.62);
  cursor: pointer;
  font-size: 10px;
  font-weight: 750;
}

.resume-card .resume-primary {
  background: var(--green-bright);
  color: var(--navy-deep);
}

.source-note {
  display: flex;
  justify-content: flex-end;
  margin: 12px 3px 0;
  color: rgba(255, 255, 255, 0.42);
  font-size: 10px;
  letter-spacing: 0.035em;
}

.source-note a {
  color: rgba(255, 255, 255, 0.68);
  text-underline-offset: 3px;
}

.time-chooser {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.time-shell {
  display: grid;
  grid-template-columns: minmax(240px, 0.58fr) minmax(600px, 1.42fr);
  align-items: center;
  gap: 56px;
  padding-top: 52px;
  padding-bottom: 52px;
}

.section-intro h2 {
  margin: 0;
  color: var(--navy-deep);
  font-family: var(--display);
  font-size: clamp(42px, 5.3vw, 68px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.04;
}

.section-intro > p:not(.eyebrow) {
  max-width: 640px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

.section-intro.compact h2 {
  font-size: clamp(32px, 3.7vw, 49px);
}

.time-shell .section-intro h2 {
  max-width: 340px;
  font-size: clamp(30px, 3.2vw, 42px);
}

.time-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.time-option {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-width: 0;
  min-height: 118px;
  padding: 18px 20px;
  border: 0;
  border-right: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  gap: 14px;
  text-align: left;
  text-decoration: none;
  transition: background 220ms ease;
}

.time-option:last-child {
  border-right: 0;
}

.time-option:hover {
  background: var(--paper);
}

.time-number {
  color: var(--clay);
  font-family: var(--display);
  font-size: 42px;
  letter-spacing: -0.05em;
  line-height: 1;
}

.time-option > span:nth-child(2) {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.time-option strong {
  color: var(--navy-deep);
  font-size: 13px;
}

.time-option small {
  overflow: hidden;
  margin-top: 5px;
  color: var(--muted);
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.time-option i {
  color: var(--green);
  font-size: 15px;
  font-style: normal;
}

.brief-section,
.chapters-section,
.contest-section,
.faq-section {
  padding: 112px 0;
}

.brief-section .section-intro {
  display: grid;
  grid-template-columns: minmax(330px, 0.92fr) minmax(400px, 1.08fr);
  align-items: end;
  column-gap: 90px;
}

.brief-section .section-intro .eyebrow {
  grid-column: 1 / -1;
}

.brief-section .section-intro h2 {
  grid-column: 1;
}

.brief-section .section-intro > p:not(.eyebrow) {
  grid-column: 2;
  margin: 0 0 5px;
}

.brief-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 68px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.principle {
  display: flex;
  min-height: 370px;
  flex-direction: column;
  padding: 28px clamp(22px, 3vw, 42px) 30px;
  border-right: 1px solid var(--line);
}

.principle:first-child {
  padding-left: 0;
}

.principle:last-child {
  padding-right: 0;
  border-right: 0;
}

.principle-number {
  color: var(--clay);
  font-family: var(--display);
  font-size: 14px;
  font-style: italic;
}

.principle h3 {
  max-width: 300px;
  margin: 54px 0 16px;
  color: var(--navy-deep);
  font-family: var(--display);
  font-size: 30px;
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.principle p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.text-seek {
  display: inline-flex;
  width: max-content;
  min-height: 44px;
  align-items: center;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--navy);
  cursor: pointer;
  font-size: 11px;
  font-weight: 750;
  gap: 8px;
  margin-top: auto;
}

.text-seek span:first-child {
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--navy);
  color: #fff;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
}

.anchor-quote {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 34px;
  margin: 82px 0 0;
  padding: 54px clamp(34px, 6vw, 76px);
  overflow: hidden;
  border: 0;
  border-radius: 4px 42px 4px 4px;
  background: var(--navy);
  color: #fff;
}

.anchor-quote::after {
  position: absolute;
  width: 260px;
  height: 260px;
  right: -130px;
  bottom: -160px;
  border: 1px solid rgba(201, 231, 167, 0.24);
  border-radius: 50%;
  box-shadow: 0 0 0 42px rgba(201, 231, 167, 0.04), 0 0 0 84px rgba(201, 231, 167, 0.025);
  content: "";
}

.quote-mark {
  color: var(--green-bright);
  font-family: var(--display);
  font-size: 84px;
  line-height: 0.8;
}

.anchor-quote p {
  max-width: 900px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(30px, 3.9vw, 52px);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.18;
}

.anchor-quote footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 34px;
  color: rgba(255, 255, 255, 0.56);
  font-size: 11px;
  font-weight: 650;
}

.anchor-quote button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  background: transparent;
  color: #fff;
  cursor: pointer;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
  gap: 8px;
}

.entry-section {
  position: relative;
  padding: 112px 0;
  overflow: hidden;
  background: var(--navy-deep);
  color: #fff;
}

.entry-section::before {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.07) 0.7px, transparent 0.7px);
  background-size: 17px 17px;
  content: "";
  opacity: 0.32;
}

.entry-section .section-shell {
  position: relative;
  z-index: 1;
}

.section-intro.light h2 {
  max-width: 900px;
  color: #fff;
}

.path-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 58px;
  border-top: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}

.path-tabs button {
  position: relative;
  min-height: 68px;
  padding: 0 18px;
  border: 0;
  border-right: 1px solid var(--line-light);
  background: transparent;
  color: rgba(255, 255, 255, 0.52);
  cursor: pointer;
  font-size: 12px;
  font-weight: 750;
  text-align: left;
  transition: background 200ms ease, color 200ms ease;
}

.path-tabs button:last-child {
  border-right: 0;
}

.path-tabs button[aria-selected="true"] {
  background: var(--green-bright);
  color: var(--navy-deep);
}

.path-panel {
  display: grid;
  grid-template-columns: minmax(420px, 1.2fr) minmax(360px, 0.8fr);
  gap: 90px;
  min-height: 390px;
  align-items: center;
  padding-top: 62px;
}

.path-panel[hidden] {
  display: none;
}

.path-label {
  margin: 0 0 15px;
  color: var(--green-bright);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.path-main h3 {
  max-width: 700px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(40px, 4.8vw, 62px);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.04;
}

.path-main > p:not(.path-label) {
  max-width: 700px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.65);
  font-size: 15px;
  line-height: 1.85;
}

.button-light {
  width: max-content;
  margin-top: 30px;
  background: var(--surface);
  color: var(--navy-deep);
}

.button-light > span:last-child {
  color: var(--clay);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
}

.path-facts {
  margin: 0;
  border-top: 1px solid var(--line-light);
}

.path-facts > div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line-light);
}

.path-facts dt {
  color: rgba(255, 255, 255, 0.4);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.path-facts dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.84);
  font-family: var(--display);
  font-size: 18px;
  line-height: 1.45;
}

.section-heading-row {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 50px;
}

.section-heading-row.align-end {
  align-items: end;
}

.chapter-helper {
  max-width: 380px;
  margin: 48px 0 5px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.75;
}

.chapter-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 58px;
  border: 1px solid var(--line);
  background: var(--line);
}

.chapter-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 390px;
  flex-direction: column;
  padding: 18px;
  overflow: hidden;
  border: 0;
  background: var(--surface);
  cursor: pointer;
  text-align: left;
  transition: background 220ms ease;
}

.chapter-card::after {
  position: absolute;
  inset: 0;
  border: 2px solid transparent;
  content: "";
  pointer-events: none;
  transition: border-color 200ms ease;
}

.chapter-card:hover {
  background: #fff;
}

.chapter-card:hover::after,
.chapter-card.is-current::after {
  border-color: var(--clay);
}

.chapter-card.is-current {
  background: #fffaf3;
}

.chapter-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(0.78) contrast(0.96);
  transition: filter 240ms ease, transform 500ms var(--ease);
}

.chapter-card:hover img {
  filter: saturate(1) contrast(1);
  transform: scale(1.012);
}

.chapter-time {
  width: max-content;
  margin-top: 18px;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--navy);
  color: #fff;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 9px;
}

.chapter-index {
  position: absolute;
  right: 20px;
  bottom: 18px;
  color: rgba(18, 49, 74, 0.11);
  font-family: var(--display);
  font-size: 48px;
  font-style: italic;
  line-height: 1;
}

.chapter-card strong {
  max-width: 88%;
  margin-top: 18px;
  color: var(--navy-deep);
  font-family: var(--display);
  font-size: 23px;
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.chapter-card small {
  max-width: 80%;
  margin-top: 9px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.55;
}

.transcript-section {
  padding: 96px 0;
  background: var(--surface-blue);
}

.transcript-shell {
  display: grid;
  grid-template-columns: minmax(330px, 0.8fr) minmax(520px, 1.2fr);
  align-items: start;
  gap: 90px;
}

.transcript-copy h2 {
  max-width: 520px;
  margin: 0;
  color: var(--navy-deep);
  font-family: var(--display);
  font-size: clamp(40px, 4.7vw, 61px);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.06;
}

.transcript-copy > p:not(.eyebrow) {
  max-width: 530px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.search-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 30px;
}

.search-suggestions button {
  min-height: 40px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.45);
  color: var(--navy);
  cursor: pointer;
  font-size: 10px;
  font-weight: 720;
}

.transcript-search-card {
  min-height: 420px;
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid rgba(18, 49, 74, 0.12);
  border-radius: 3px 30px 3px 3px;
  background: var(--surface);
  box-shadow: 0 20px 55px rgba(18, 49, 74, 0.08);
}

.transcript-search-card > label {
  display: block;
  margin-bottom: 10px;
  color: var(--navy-deep);
  font-size: 11px;
  font-weight: 780;
}

.search-field {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: 58px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  gap: 12px;
}

.search-field > span {
  color: var(--green);
  font-family: var(--display);
  font-size: 26px;
  transform: rotate(-15deg);
}

.search-field input {
  width: 100%;
  height: 54px;
  min-width: 0;
  padding: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font-size: 15px;
}

.search-field input::placeholder {
  color: #9aa3a8;
}

.search-field kbd {
  padding: 3px 7px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--paper);
  color: var(--muted);
  font-family: var(--sans);
  font-size: 10px;
}

.search-status {
  min-height: 24px;
  margin: 13px 2px 0;
  color: var(--muted);
  font-size: 10px;
}

.search-results {
  display: grid;
  max-height: 320px;
  gap: 1px;
  overflow-y: auto;
  border-top: 1px solid var(--line);
}

.search-result {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  min-height: 64px;
  padding: 13px 5px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
  gap: 12px;
  text-align: left;
}

.search-result:hover {
  background: rgba(18, 49, 74, 0.04);
}

.search-result time {
  color: var(--clay);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 9px;
  font-weight: 720;
}

.search-result span {
  color: var(--ink);
  font-size: 11px;
  line-height: 1.55;
}

.search-result mark {
  padding: 1px 2px;
  background: #f3dea2;
  color: inherit;
}

.search-result i {
  color: var(--green);
  font-size: 12px;
  font-style: normal;
}

.contest-section {
  background: var(--surface);
}

.contest-list {
  margin-top: 62px;
  border-top: 1px solid var(--line);
}

.contest-row {
  display: grid;
  grid-template-columns: minmax(190px, 0.52fr) minmax(420px, 1.28fr) auto;
  align-items: center;
  min-height: 154px;
  gap: 50px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.contest-fit {
  display: grid;
  grid-template-columns: 34px 1fr;
  align-items: center;
  gap: 16px;
}

.contest-fit > span {
  color: var(--clay);
  font-family: var(--display);
  font-size: 12px;
  font-style: italic;
}

.contest-fit strong {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.contest-row h3 {
  margin: 0;
  color: var(--navy-deep);
  font-family: var(--display);
  font-size: 29px;
  font-weight: 500;
  letter-spacing: -0.03em;
}

.contest-row p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

.contest-row > a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: var(--navy);
  font-size: 10px;
  font-weight: 750;
  gap: 9px;
  text-decoration: none;
}

.contest-row > a span:last-child {
  color: var(--clay);
  font-size: 15px;
}

.verification-note {
  max-width: 760px;
  margin: 24px 0 0 auto;
  color: var(--muted);
  font-size: 10px;
  text-align: right;
}

.faq-section {
  border-top: 1px solid var(--line);
}

.faq-shell {
  display: grid;
  grid-template-columns: minmax(300px, 0.75fr) minmax(560px, 1.25fr);
  align-items: start;
  gap: 100px;
}

.sticky-intro {
  position: sticky;
  top: 130px;
}

.print-button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  margin-top: 34px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--navy);
  cursor: pointer;
  font-size: 10px;
  font-weight: 750;
  gap: 14px;
}

.print-button span:last-child {
  color: var(--clay);
}

.faq-list {
  border-top: 1px solid var(--line);
}

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

.faq-list summary {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  min-height: 96px;
  padding: 20px 0;
  color: var(--navy-deep);
  cursor: pointer;
  font-family: var(--display);
  font-size: 23px;
  font-weight: 500;
  gap: 24px;
  letter-spacing: -0.02em;
  list-style: none;
}

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

.faq-list summary i {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--green);
  font-family: var(--sans);
  font-size: 19px;
  font-style: normal;
  transition: transform 240ms var(--ease), background 180ms ease;
}

.faq-list details[open] summary i {
  background: var(--green-bright);
  color: var(--navy-deep);
  transform: rotate(45deg);
}

.faq-list details > div {
  padding: 0 58px 34px 0;
}

.faq-list details p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.faq-list details button {
  min-height: 42px;
  margin-top: 18px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--clay);
  cursor: pointer;
  font-size: 10px;
  font-weight: 750;
}

.closing-section {
  padding: 0 0 90px;
}

.closing-card {
  position: relative;
  padding: clamp(46px, 8vw, 100px);
  overflow: hidden;
  border-radius: 5px 52px 5px 5px;
  background: var(--green);
  color: #fff;
}

.closing-card::after {
  position: absolute;
  right: -100px;
  bottom: -230px;
  width: 480px;
  height: 480px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  box-shadow: 0 0 0 60px rgba(255, 255, 255, 0.025), 0 0 0 120px rgba(255, 255, 255, 0.018);
  content: "";
}

.closing-card h2 {
  position: relative;
  z-index: 1;
  max-width: 950px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(42px, 6vw, 75px);
  font-weight: 500;
  letter-spacing: -0.048em;
  line-height: 1.02;
}

.closing-card > p:not(.eyebrow) {
  position: relative;
  z-index: 1;
  max-width: 620px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
}

.closing-actions {
  position: relative;
  z-index: 1;
}

.button-accent {
  background: var(--green-bright);
  color: var(--navy-deep);
}

.button-line {
  border-color: rgba(255, 255, 255, 0.28);
  background: transparent;
  color: #fff;
}

.site-footer {
  padding: 52px 0;
  background: var(--navy-deep);
  color: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: auto minmax(420px, 1fr) auto;
  align-items: start;
  gap: 70px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand > div {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.footer-brand strong {
  font-size: 13px;
}

.footer-brand > div span {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.46);
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-copy {
  max-width: 720px;
}

.footer-copy p {
  margin: 0 0 8px;
  color: rgba(255, 255, 255, 0.48);
  font-size: 10px;
  line-height: 1.7;
}

.back-to-top {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: rgba(255, 255, 255, 0.64);
  font-size: 10px;
  font-weight: 750;
  gap: 12px;
  text-decoration: none;
}

.back-to-top span:last-child {
  color: var(--green-bright);
  font-size: 16px;
}

.toast {
  position: fixed;
  z-index: 500;
  right: 20px;
  bottom: 20px;
  max-width: min(360px, calc(100vw - 40px));
  padding: 13px 16px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  background: var(--navy-deep);
  box-shadow: 0 14px 50px rgba(7, 27, 40, 0.25);
  color: #fff;
  font-size: 11px;
  font-weight: 650;
}

.toast[hidden] {
  display: none;
}

@media (max-width: 1120px) {
  :root {
    --shell: min(100% - 40px, 1040px);
  }

  .main-nav {
    display: none;
  }

  .nav-shell {
    grid-template-columns: auto 1fr auto;
  }

  .hero-grid {
    grid-template-columns: minmax(290px, 0.75fr) minmax(500px, 1.25fr);
    gap: 42px;
  }

  .hero h1 {
    font-size: clamp(50px, 5.5vw, 66px);
  }

  .time-shell {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .time-shell .section-intro h2 {
    max-width: none;
  }

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

  .path-panel {
    gap: 50px;
  }

  .faq-shell {
    gap: 60px;
  }
}

@media (max-width: 900px) {
  .hero {
    padding-top: 68px;
  }

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

  .hero-copy {
    max-width: 720px;
  }

  .player-column {
    max-width: 760px;
  }

  .brief-section .section-intro,
  .transcript-shell,
  .faq-shell {
    grid-template-columns: 1fr;
  }

  .brief-section .section-intro h2,
  .brief-section .section-intro > p:not(.eyebrow) {
    grid-column: 1;
  }

  .brief-section .section-intro > p:not(.eyebrow) {
    margin-top: 24px;
  }

  .brief-grid {
    grid-template-columns: 1fr;
  }

  .principle,
  .principle:first-child,
  .principle:last-child {
    min-height: auto;
    padding: 28px 0 32px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .principle:last-child {
    border-bottom: 0;
  }

  .principle h3 {
    margin-top: 26px;
  }

  .text-seek {
    margin-top: 22px;
  }

  .path-panel {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .contest-row {
    grid-template-columns: minmax(170px, 0.55fr) 1.45fr;
    gap: 28px;
  }

  .contest-row > a {
    grid-column: 2;
    width: max-content;
  }

  .sticky-intro {
    position: static;
  }

  .footer-grid {
    grid-template-columns: 1fr auto;
  }

  .footer-copy {
    grid-row: 2;
    grid-column: 1 / -1;
  }
}

@media (max-width: 700px) {
  :root {
    --shell: calc(100vw - 28px);
  }

  html {
    scroll-padding-top: 72px;
  }

  .nav-shell {
    min-height: 66px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
  }

  .brand-copy span {
    display: none;
  }

  .language-switch button {
    min-width: 45px;
    min-height: 38px;
  }

  .hero {
    padding: 38px 0 54px;
  }

  .hero-grid {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .hero-copy {
    display: contents;
  }

  .hero-copy .eyebrow {
    order: 1;
  }

  .hero-copy h1 {
    order: 2;
  }

  .player-column {
    width: 100%;
    margin-top: 28px;
    order: 3;
  }

  .hero-copy .hero-lede {
    order: 4;
  }

  .hero-copy .hero-actions {
    order: 5;
  }

  .hero-copy .hero-proof {
    order: 6;
  }

  .hero h1 {
    font-size: clamp(42px, 13vw, 56px);
    line-height: 0.98;
  }

  .hero-lede {
    margin-top: 28px;
    font-size: 15px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
    margin-top: 26px;
  }

  .hero-actions .button {
    width: 100%;
  }

  .hero-proof {
    justify-content: space-between;
    margin-top: 34px;
  }

  .hero-proof > span {
    min-width: 0;
    padding-right: 12px;
    margin-right: 12px;
  }

  .hero-proof strong {
    font-size: 21px;
  }

  .hero-proof small {
    font-size: 8px;
  }

  .player-shell {
    border-radius: 14px;
  }

  .player-topline {
    min-height: 40px;
  }

  .player-tools {
    align-items: stretch;
    flex-direction: column;
    padding: 6px;
  }

  .tool-group {
    justify-content: space-between;
  }

  .tool-group + .tool-group {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .player-tools button,
  .player-tools a {
    min-height: 44px;
    flex: 1;
  }

  .guided-mode {
    gap: 12px;
  }

  .guided-mode strong {
    max-width: 220px;
  }

  .resume-card {
    position: static;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
  }

  .resume-card > div:last-child {
    align-items: flex-end;
    flex-direction: column;
  }

  .source-note {
    justify-content: flex-start;
  }

  .time-shell {
    padding-top: 44px;
    padding-bottom: 44px;
  }

  .time-options {
    grid-template-columns: 1fr;
  }

  .time-option {
    min-height: 96px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .time-option:last-child {
    border-bottom: 0;
  }

  .brief-section,
  .chapters-section,
  .contest-section,
  .faq-section,
  .entry-section {
    padding: 78px 0;
  }

  .section-intro h2,
  .section-intro.compact h2 {
    font-size: clamp(38px, 11vw, 50px);
  }

  .section-intro > p:not(.eyebrow) {
    font-size: 15px;
  }

  .brief-grid {
    margin-top: 46px;
  }

  .anchor-quote {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 52px;
    padding: 34px 24px;
    border-radius: 3px 28px 3px 3px;
  }

  .quote-mark {
    font-size: 56px;
  }

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

  .path-tabs {
    grid-template-columns: 1fr 1fr;
  }

  .path-tabs button {
    min-height: 64px;
    border-bottom: 1px solid var(--line-light);
  }

  .path-tabs button:nth-child(2) {
    border-right: 0;
  }

  .path-tabs button:nth-child(n + 3) {
    border-bottom: 0;
  }

  .path-panel {
    min-height: 0;
    padding-top: 42px;
  }

  .path-main h3 {
    font-size: clamp(38px, 11vw, 49px);
  }

  .path-facts > div {
    grid-template-columns: 95px 1fr;
  }

  .section-heading-row,
  .section-heading-row.align-end {
    align-items: start;
    flex-direction: column;
    gap: 0;
  }

  .chapter-helper {
    margin-top: 20px;
  }

  .chapter-grid {
    grid-template-columns: 1fr;
    margin-top: 40px;
  }

  .chapter-card {
    display: grid;
    grid-template-columns: 116px 1fr auto;
    grid-template-rows: auto auto 1fr;
    min-height: 138px;
    padding: 12px;
    column-gap: 14px;
    row-gap: 5px;
  }

  .chapter-card img {
    width: 116px;
    height: 100%;
    min-height: 114px;
    grid-column: 1;
    grid-row: 1 / 4;
  }

  .chapter-time {
    grid-column: 2;
    grid-row: 1;
    margin-top: 0;
  }

  .chapter-index {
    position: static;
    grid-column: 3;
    grid-row: 1;
    align-self: center;
    font-size: 26px;
  }

  .chapter-card strong {
    max-width: none;
    grid-column: 2 / 4;
    grid-row: 2;
    margin-top: 2px;
    font-size: 18px;
  }

  .chapter-card small {
    max-width: none;
    grid-column: 2 / 4;
    grid-row: 3;
    margin-top: 0;
    font-size: 9px;
  }

  .transcript-section {
    padding: 72px 0;
  }

  .transcript-shell {
    gap: 42px;
  }

  .transcript-copy h2 {
    font-size: clamp(38px, 11vw, 50px);
  }

  .transcript-search-card {
    min-height: 360px;
    border-radius: 3px 24px 3px 3px;
  }

  .search-field kbd {
    display: none;
  }

  .contest-list {
    margin-top: 42px;
  }

  .contest-row {
    grid-template-columns: 1fr;
    min-height: 0;
    gap: 14px;
    padding: 28px 0;
  }

  .contest-row > a {
    grid-column: 1;
  }

  .verification-note {
    text-align: left;
  }

  .faq-shell {
    gap: 42px;
  }

  .faq-list summary {
    min-height: 86px;
    font-size: 20px;
  }

  .faq-list details > div {
    padding-right: 0;
  }

  .closing-section {
    padding-bottom: 56px;
  }

  .closing-card {
    padding: 46px 24px;
    border-radius: 4px 30px 4px 4px;
  }

  .closing-card h2 {
    font-size: clamp(40px, 11vw, 50px);
  }

  .closing-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .closing-actions .button {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-copy,
  .back-to-top {
    grid-column: 1;
    grid-row: auto;
  }
}

@media (max-width: 380px) {
  :root {
    --shell: calc(100vw - 22px);
  }

  .brand-copy strong {
    font-size: 12px;
  }

  .language-switch button {
    min-width: 42px;
    padding-inline: 8px;
  }

  .hero h1 {
    font-size: 41px;
  }

  .chapter-card {
    grid-template-columns: 94px 1fr auto;
  }

  .chapter-card img {
    width: 94px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media print {
  :root {
    --shell: 100%;
  }

  body {
    background: #fff;
    color: #111;
    font-size: 11pt;
  }

  .site-header,
  .hero,
  .time-chooser,
  .entry-section,
  .chapters-section,
  .transcript-section,
  .closing-actions,
  .site-footer,
  .watch-progress,
  .print-button,
  .toast {
    display: none !important;
  }

  .brief-section,
  .contest-section,
  .faq-section,
  .closing-section {
    padding: 24px 0;
  }

  .brief-section .section-intro,
  .brief-grid,
  .faq-shell {
    display: block;
  }

  .section-intro h2,
  .closing-card h2 {
    color: #111;
    font-size: 28pt;
  }

  .principle {
    min-height: 0;
    padding: 16px 0;
    border-right: 0;
    border-bottom: 1px solid #bbb;
    page-break-inside: avoid;
  }

  .principle h3 {
    margin-top: 12px;
  }

  .text-seek,
  .anchor-quote button,
  .contest-row > a,
  .faq-list details button {
    display: none;
  }

  .anchor-quote,
  .closing-card {
    padding: 22px;
    border: 1px solid #999;
    background: #fff;
    color: #111;
    box-shadow: none;
  }

  .anchor-quote p {
    color: #111;
    font-size: 22pt;
  }

  .contest-row {
    grid-template-columns: 1fr 2fr;
    min-height: 0;
    padding: 12px 0;
  }

  .faq-list details {
    page-break-inside: avoid;
  }

  .faq-list details[open] > div,
  .faq-list details > div {
    display: block;
  }

  .faq-list summary i {
    display: none;
  }

  .closing-card > p:not(.eyebrow) {
    color: #444;
  }
}