:root {
  --ink: #17342d;
  --ink-deep: #10251f;
  --paper: #f4f0e6;
  --paper-warm: #ebe3d2;
  --coral: #ed6a4b;
  --coral-dark: #d94f32;
  --sage: #aebca0;
  --sun: #e9c563;
  --white: #fffdf7;
  --line: rgba(23, 52, 45, .18);
  --display: "Songti SC", "STSong", "SimSun", "Iowan Old Style", serif;
  --body: "Avenir Next", "Microsoft YaHei UI", "PingFang SC", sans-serif;
  --radius: 1.5rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 11% 4%, rgba(237,106,75,.11), transparent 25rem),
    radial-gradient(circle at 83% 22%, rgba(174,188,160,.18), transparent 28rem),
    var(--paper);
  font-family: var(--body);
  line-height: 1.72;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 20;
  opacity: .18;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.12'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
::selection { background: var(--coral); color: var(--white); }

.skip-link {
  position: fixed;
  top: .5rem;
  left: .5rem;
  z-index: 100;
  padding: .6rem 1rem;
  background: var(--white);
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  width: min(92%, 1360px);
  margin: 1.15rem auto 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
  position: relative;
  z-index: 30;
}

.brand { display: flex; align-items: center; gap: .75rem; line-height: 1; }
.brand strong { display: block; font-family: var(--display); font-size: 1.1rem; letter-spacing: .08em; }
.brand small { display: block; margin-top: .35rem; font-size: .52rem; letter-spacing: .24em; opacity: .62; }
.brand-mark { width: 2.55rem; height: 2.55rem; position: relative; display: inline-block; }
.brand-mark i { position: absolute; border: 1.5px solid var(--ink); border-radius: 50% 50% 46% 54%; width: 1.4rem; height: 2.25rem; top: .08rem; }
.brand-mark i:nth-child(1) { left: .1rem; transform: rotate(-28deg); }
.brand-mark i:nth-child(2) { right: .1rem; transform: rotate(28deg); }
.brand-mark i:nth-child(3) { width: .55rem; height: .55rem; left: 1rem; top: 1.05rem; background: var(--coral); border: 0; }

.site-nav { display: flex; justify-content: center; gap: clamp(1.25rem, 3vw, 3.2rem); font-size: .86rem; }
.site-nav a { position: relative; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -.3rem; height: 1px; background: var(--coral); transition: right .25s ease; }
.site-nav a:hover::after { right: 0; }
.header-cta { border: 1px solid var(--ink); border-radius: 99px; padding: .58rem 1.15rem; font-size: .8rem; transition: .25s; }
.header-cta:hover { background: var(--ink); color: var(--paper); }
.nav-toggle { display: none; border: 0; background: none; color: var(--ink); }

.hero {
  min-height: 46rem;
  width: min(92%, 1360px);
  margin: 0 auto;
  padding: clamp(5rem, 9vw, 9rem) 0 6rem;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: clamp(2rem, 7vw, 8rem);
}

.eyebrow, .section-kicker { font-size: .7rem; letter-spacing: .22em; text-transform: uppercase; font-weight: 700; }
.eyebrow::before, .section-kicker::before { content: ""; display: inline-block; width: 2.8rem; height: 1px; margin: 0 .85rem .22rem 0; background: currentColor; }
.hero h1, .section h2 { font-family: var(--display); font-weight: 500; letter-spacing: -.035em; }
.hero h1 { margin: 1.5rem 0 1.8rem; font-size: clamp(3.1rem, 6vw, 6.7rem); line-height: .99; }
.hero h1 em { color: var(--coral); font-style: normal; }
.hero-lede { max-width: 34rem; font-size: clamp(1rem, 1.4vw, 1.2rem); opacity: .82; }
.hero-actions { margin-top: 2.6rem; display: flex; align-items: center; gap: 2rem; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 1rem; border: 0; cursor: pointer; padding: .95rem 1.45rem; border-radius: 99px; font-weight: 700; transition: transform .2s, background .2s, box-shadow .2s; }
.button span { font-size: 1.25em; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--ink); color: var(--white); box-shadow: 0 .75rem 2rem rgba(16,37,31,.16); }
.button-primary:hover { background: var(--coral); }
.text-link { display: inline-flex; align-items: center; gap: .65rem; font-size: .88rem; border-bottom: 1px solid var(--ink); padding-bottom: .2rem; }
.text-link span { color: var(--coral); }
.hero-proof { margin-top: 4rem; display: flex; gap: clamp(1.5rem, 4vw, 4rem); }
.hero-proof div { display: grid; gap: .15rem; }
.hero-proof strong { font-family: var(--display); font-size: 1.4rem; }
.hero-proof span { font-size: .69rem; opacity: .62; }

.hero-visual { aspect-ratio: 1; position: relative; display: grid; place-items: center; max-width: 42rem; }
.hero-visual::before { content: ""; position: absolute; width: 80%; height: 80%; border-radius: 50%; background: radial-gradient(circle at 35% 30%, rgba(255,253,247,.88), rgba(174,188,160,.26) 60%, transparent 61%); filter: drop-shadow(0 1.5rem 2rem rgba(16,37,31,.08)); }
.orbit { position: absolute; border: 1px solid rgba(23,52,45,.27); border-radius: 50%; }
.orbit-one { width: 61%; height: 61%; }
.orbit-two { width: 81%; height: 43%; transform: rotate(31deg); }
.orbit-three { width: 43%; height: 86%; transform: rotate(-35deg); border-style: dashed; }
.visual-core { width: 10.5rem; height: 10.5rem; border-radius: 50%; background: var(--ink); color: var(--white); display: grid; place-content: center; text-align: center; position: relative; z-index: 2; box-shadow: 0 1.5rem 3rem rgba(16,37,31,.22); }
.visual-core span { font-size: .7rem; letter-spacing: .3em; margin-left: .3em; }
.visual-core strong { font-family: var(--display); color: var(--sun); font-size: 2rem; font-weight: 500; }
.orbit-note { position: absolute; z-index: 3; background: rgba(255,253,247,.9); border: 1px solid var(--line); border-radius: 99px; padding: .45rem .75rem .45rem .45rem; font-size: .7rem; backdrop-filter: blur(8px); box-shadow: 0 .5rem 1.2rem rgba(16,37,31,.08); animation: float 5s ease-in-out infinite; }
.orbit-note b { display: inline-grid; place-items: center; width: 1.65rem; height: 1.65rem; border-radius: 50%; margin-right: .4rem; background: var(--coral); color: white; font-size: .56rem; }
.note-one { top: 11%; left: 26%; }
.note-two { top: 35%; right: -1%; animation-delay: -1.2s; }
.note-three { bottom: 20%; right: 11%; animation-delay: -2.6s; }
.note-four { bottom: 15%; left: 5%; animation-delay: -3.7s; }
.visual-caption { position: absolute; bottom: -1.3rem; right: 2%; margin: 0; text-align: right; font-family: var(--display); font-size: .82rem; opacity: .65; transform: rotate(-2deg); }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-.55rem); } }

.ticker { display: flex; overflow: hidden; border-block: 1px solid var(--line); padding: .85rem 0; background: rgba(255,253,247,.35); font-family: var(--display); color: var(--coral-dark); white-space: nowrap; }
.ticker div { min-width: max-content; animation: ticker 30s linear infinite; }
@keyframes ticker { to { transform: translateX(-100%); } }

.section { width: min(92%, 1360px); margin: 0 auto; padding: clamp(5.5rem, 10vw, 10rem) 0; }
.section h2 { font-size: clamp(2.5rem, 5vw, 5.4rem); line-height: 1.08; margin: 1.5rem 0; }
.section h2 span { color: var(--coral); }
.belief-grid { display: grid; grid-template-columns: 1.18fr .82fr; align-items: end; gap: 8vw; }
.belief-copy { border-left: 1px solid var(--line); padding-left: 2rem; font-size: 1rem; }
.belief-copy p + p { margin-top: 1.4rem; }
.scenario-rail { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 5rem; border-top: 1px solid var(--line); }
.scenario-card { min-height: 21rem; padding: 1.5rem 2rem 2.2rem; border-right: 1px solid var(--line); display: flex; flex-direction: column; }
.scenario-card:first-child { border-left: 1px solid var(--line); }
.scenario-no { font-family: var(--display); font-size: .75rem; opacity: .5; }
.scenario-old { font-family: var(--display); font-size: clamp(1.45rem, 2.4vw, 2.3rem); line-height: 1.25; margin: 2rem 0 auto; }
.scenario-turn { align-self: start; padding: .25rem .6rem; border: 1px solid var(--coral); color: var(--coral-dark); border-radius: 99px; font-size: .6rem; }
.scenario-new { margin: .8rem 0 0; font-size: .82rem; opacity: .75; }

.method-section { width: 100%; max-width: none; background: var(--ink); color: var(--paper); padding-inline: 4%; }
.method-intro { width: min(100%, 1360px); margin: 0 auto 4rem; display: grid; grid-template-columns: 1fr .42fr; column-gap: 8vw; }
.method-intro .section-kicker { grid-column: 1 / -1; }
.method-intro h2 { margin-bottom: 0; }
.method-intro > p:last-child { align-self: end; opacity: .68; }
.method-steps { width: min(100%, 1360px); margin: 0 auto; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid rgba(244,240,230,.22); }
.method-step { min-height: 24rem; padding: 1.4rem; border-right: 1px solid rgba(244,240,230,.22); display: flex; flex-direction: column; }
.method-step:last-child { border-right: 0; }
.step-index { font-size: .65rem; opacity: .48; }
.step-icon { width: 4rem; height: 4rem; display: grid; place-items: center; margin: 3rem 0 2rem; border: 1px solid rgba(244,240,230,.32); border-radius: 50%; color: var(--sun); font-family: var(--display); font-size: 1.5rem; transition: .3s; }
.method-step:hover .step-icon { background: var(--coral); border-color: var(--coral); color: white; transform: rotate(-8deg) scale(1.05); }
.method-step h3 { font-family: var(--display); font-size: 2rem; font-weight: 500; margin: 0 0 .8rem; }
.method-step p { font-size: .85rem; opacity: .72; margin: 0; }
.method-step small { margin-top: auto; color: var(--sage); font-family: var(--display); }

.lab-section { width: 100%; max-width: none; padding-inline: 4%; background: var(--paper-warm); }
.lab-header, .lab-panel { width: min(100%, 1360px); margin-inline: auto; }
.lab-header { display: grid; grid-template-columns: 1.1fr .55fr; gap: 8vw; align-items: end; }
.lab-header > p { max-width: 28rem; font-size: .85rem; opacity: .68; }
.lab-panel { margin-top: 3.5rem; background: var(--white); border-radius: var(--radius); display: grid; grid-template-columns: .95fr 1.05fr; overflow: hidden; box-shadow: 0 2rem 5rem rgba(38,45,35,.09); }
.lab-form { padding: clamp(2rem, 5vw, 4.5rem); }
.lab-form fieldset { border: 0; padding: 0; margin: 0 0 2.6rem; }
.lab-form legend { font-family: var(--display); font-size: 1.15rem; margin-bottom: 1rem; }
.lab-form legend span { color: var(--coral); font-family: var(--body); font-size: .62rem; margin-right: .45rem; }
.choice-grid { display: grid; gap: .65rem; }
.stage-grid { grid-template-columns: repeat(3, 1fr); }
.scene-grid { grid-template-columns: repeat(2, 1fr); }
.choice-grid input { position: absolute; opacity: 0; pointer-events: none; }
.choice-grid label > span { display: flex; flex-direction: column; justify-content: center; min-height: 4rem; padding: .7rem 1rem; border: 1px solid var(--line); border-radius: .8rem; cursor: pointer; transition: .2s; }
.choice-grid small { font-size: .6rem; opacity: .52; }
.choice-grid input:checked + span { border-color: var(--ink); background: var(--ink); color: var(--white); box-shadow: 0 .6rem 1.5rem rgba(23,52,45,.14); }
.choice-grid input:focus-visible + span { outline: 3px solid var(--sun); outline-offset: 2px; }
.button-coral { width: 100%; background: var(--coral); color: white; }
.button-coral:hover { background: var(--coral-dark); }
.plan-output { background: var(--ink); color: var(--paper); min-height: 38rem; padding: clamp(2rem, 5vw, 4.5rem); display: grid; align-items: center; }
.output-placeholder { text-align: center; opacity: .68; }
.output-placeholder p { font-family: var(--display); font-size: 1.35rem; line-height: 1.55; }
.output-placeholder small { color: var(--sage); }
.pulse-mark { width: 5rem; height: 5rem; border: 1px solid var(--sage); border-radius: 50%; margin: 0 auto 2rem; position: relative; }
.pulse-mark::before, .pulse-mark::after { content: ""; position: absolute; inset: 25%; border: 1px solid var(--coral); border-radius: 50%; }
.pulse-mark::after { inset: 42%; background: var(--coral); }
.plan-content { align-self: start; animation: rise .45s ease both; }
.plan-label { color: var(--sun); font-size: .65rem; letter-spacing: .2em; }
.plan-content h3 { font-family: var(--display); font-size: clamp(1.8rem, 3vw, 2.8rem); font-weight: 500; line-height: 1.25; margin: 1rem 0 2rem; }
.plan-list { list-style: none; padding: 0; margin: 0; }
.plan-list li { display: grid; grid-template-columns: 2.2rem 1fr; gap: .8rem; padding: 1rem 0; border-top: 1px solid rgba(244,240,230,.18); }
.plan-list b { color: var(--coral); font-family: var(--display); }
.plan-list strong { display: block; font-family: var(--display); font-size: 1.05rem; margin-bottom: .25rem; }
.plan-list p { margin: 0; font-size: .8rem; opacity: .72; }
.plan-tonight { margin-top: 2rem; padding: 1rem 1.2rem; border: 1px solid rgba(233,197,99,.45); border-radius: .8rem; color: var(--sun); font-family: var(--display); }
@keyframes rise { from { opacity: 0; transform: translateY(1rem); } }

.value-section { display: grid; grid-template-columns: 1.2fr .5fr; gap: 10vw; align-items: end; }
.quote-mark { display: block; font-family: var(--display); font-size: 8rem; line-height: .5; color: var(--coral); }
.value-statement blockquote { margin: 2rem 0 0; font-family: var(--display); font-size: clamp(2.2rem, 4.5vw, 4.8rem); line-height: 1.18; }
.value-statement blockquote span { color: var(--coral); }
.value-notes { border-top: 1px solid var(--line); }
.value-notes p { padding: 1.1rem 0; margin: 0; border-bottom: 1px solid var(--line); font-size: .82rem; }
.value-notes b { display: block; color: var(--coral-dark); font-family: var(--display); font-size: 1.1rem; }

.about-section { display: grid; grid-template-columns: 1.1fr .9fr; padding-top: 1rem; }
.about-card { background: var(--coral); color: #fff8ec; padding: clamp(2rem, 6vw, 6rem); border-radius: var(--radius) 0 0 var(--radius); }
.about-card h2 { font-size: clamp(2.3rem, 4vw, 4.5rem); }
.about-card > p { max-width: 42rem; font-size: .9rem; }
.text-link.dark { border-color: #fff8ec; margin-top: 1.5rem; }
.text-link.dark span { color: var(--sun); }
.about-manifesto { background: var(--ink); color: var(--paper); border-radius: 0 var(--radius) var(--radius) 0; padding: clamp(2rem, 6vw, 6rem); display: grid; grid-template-columns: 1fr 1fr; place-items: center; gap: 1rem; }
.about-manifesto span { width: clamp(7rem, 12vw, 10rem); aspect-ratio: 1; display: grid; place-items: center; border: 1px solid rgba(244,240,230,.27); border-radius: 50%; font-family: var(--display); font-size: 1.2rem; }
.about-manifesto span:nth-child(2), .about-manifesto span:nth-child(3) { background: rgba(174,188,160,.12); }

.faq-section { display: grid; grid-template-columns: .75fr 1.25fr; gap: 9vw; }
.faq-title h2 { font-size: clamp(2.2rem, 4vw, 4rem); }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { list-style: none; cursor: pointer; padding: 1.5rem 0; font-family: var(--display); font-size: 1.2rem; display: flex; justify-content: space-between; gap: 1rem; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { color: var(--coral); transition: transform .25s; }
.faq-list details[open] summary span { transform: rotate(45deg); }
.faq-list details p { max-width: 42rem; margin: -.4rem 0 1.5rem; font-size: .85rem; opacity: .72; }

.site-footer { background: var(--ink-deep); color: var(--paper); padding: 3rem 4%; display: flex; justify-content: space-between; align-items: end; gap: 2rem; }
.footer-brand { display: flex; align-items: center; gap: 1rem; }
.footer-mark i { border-color: var(--paper); }
.footer-brand strong { font-family: var(--display); letter-spacing: .08em; }
.footer-brand p, .footer-meta p { margin: .3rem 0 0; font-size: .66rem; opacity: .5; }
.footer-meta { text-align: right; font-size: .75rem; }

.reveal { opacity: 0; transform: translateY(1.5rem); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: .1s; }
.delay-2 { transition-delay: .2s; }
.delay-3 { transition-delay: .3s; }
.delay-4 { transition-delay: .4s; }

@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto; }
  .header-cta { display: none; }
  .nav-toggle { display: block; }
  .site-nav { position: absolute; top: 3.5rem; right: 0; left: 0; display: none; flex-direction: column; align-items: center; padding: 1.5rem; background: var(--white); border: 1px solid var(--line); border-radius: 1rem; box-shadow: 0 1rem 2rem rgba(16,37,31,.12); }
  .site-nav.open { display: flex; }
  .hero { grid-template-columns: 1fr; padding-top: 5rem; }
  .hero-visual { width: min(100%, 36rem); margin: 0 auto; }
  .belief-grid, .method-intro, .lab-header, .value-section, .faq-section { grid-template-columns: 1fr; }
  .belief-copy { border-left: 0; padding-left: 0; max-width: 40rem; }
  .method-intro > p:last-child { max-width: 30rem; }
  .method-steps { grid-template-columns: 1fr 1fr; }
  .method-step:nth-child(2) { border-right: 0; }
  .method-step:nth-child(-n+2) { border-bottom: 1px solid rgba(244,240,230,.22); }
  .lab-panel { grid-template-columns: 1fr; }
  .plan-output { min-height: 30rem; }
  .about-section { grid-template-columns: 1fr; }
  .about-card { border-radius: var(--radius) var(--radius) 0 0; }
  .about-manifesto { border-radius: 0 0 var(--radius) var(--radius); }
}

@media (max-width: 620px) {
  .site-header, .hero, .section { width: min(90%, 1360px); }
  .hero { min-height: auto; padding-bottom: 4rem; }
  .hero h1 { font-size: clamp(2.8rem, 14vw, 4.5rem); }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 1.2rem; }
  .hero-proof { gap: 1rem; justify-content: space-between; }
  .hero-visual { margin-top: 2rem; }
  .visual-core { width: 8rem; height: 8rem; }
  .orbit-note { font-size: .6rem; }
  .note-two { right: -4%; }
  .visual-caption { display: none; }
  .scenario-rail { grid-template-columns: 1fr; }
  .scenario-card, .scenario-card:first-child { border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); min-height: 17rem; }
  .method-section, .lab-section { padding-inline: 5%; }
  .method-steps { grid-template-columns: 1fr; }
  .method-step, .method-step:nth-child(2) { min-height: 20rem; border-right: 0; border-bottom: 1px solid rgba(244,240,230,.22); }
  .method-step:last-child { border-bottom: 0; }
  .stage-grid { grid-template-columns: 1fr; }
  .lab-form, .plan-output { padding: 1.5rem; }
  .about-section { width: 100%; }
  .about-card, .about-manifesto { border-radius: 0; }
  .about-manifesto { padding-block: 3rem; }
  .site-footer { align-items: flex-start; flex-direction: column; }
  .footer-meta { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}