/* ═══════════════════════════════════════════════════════════════
   SIAN3 — ITDDAA-inspired dark kinetic landing for 대치에듀
   Requires: body.theme-sian2.theme-sian3
   Fonts: Moderniz (display), Noto Sans KR (body)
   ═══════════════════════════════════════════════════════════════ */

@font-face {
  font-family: "Moderniz";
  src: url("../fonts/Moderniz.otf") format("opentype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* ── Design tokens ── */
body.theme-sian3 {
  --s3-black: #070707;
  --s3-black-soft: #0c0c0c;
  --s3-surface: #111111;
  --s3-surface-2: #161616;
  --s3-ink: #f5f5f5;
  --s3-ink-muted: rgba(245, 245, 245, 0.58);
  --s3-ink-dim: rgba(245, 245, 245, 0.32);
  --s3-red: #C4151F;
  --s3-red-bright: #e81c28;
  --s3-red-glow: rgba(196, 21, 31, 0.42);
  --s3-student: #B45309;
  --s3-student-bright: #d97706;
  --s3-border: rgba(255, 255, 255, 0.08);
  --s3-border-strong: rgba(255, 255, 255, 0.14);
  --s3-font-display: "Moderniz", "Noto Sans KR", sans-serif;
  --s3-font-body: 'Noto Sans KR', sans-serif;
  --s3-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --s3-ease-snap: cubic-bezier(0.33, 1.12, 0.52, 1);
  --s3-header-h: calc(64px + env(safe-area-inset-top, 0px));
  /* Single left gutter — header logo, hero copy, scroll, geo share this edge */
  --s3-pad-x: clamp(20px, 5vw, 64px);
  --s3-section-gap: clamp(88px, 14vh, 160px);
  --s3-cursor-x: 50%;
  --s3-cursor-y: 50%;
  --s3-cursor-active: 0;

  font-family: var(--s3-font-body);
  color: var(--s3-ink);
  background: var(--s3-black);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

body.theme-sian3.theme-sian2 {
  /* theme-sian2 kept for app-nav.js — sian3 overrides canvas */
  background: var(--s3-black);
}

html:has(body.theme-sian3) {
  scroll-behavior: smooth;
  background: var(--s3-black);
}

/* ── Cursor glow (optional, desktop) ── */
body.theme-sian3 .s3-cursor-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: calc(var(--s3-cursor-active) * 0.85);
  transition: opacity 0.4s ease;
}

body.theme-sian3 .s3-cursor-glow::before {
  content: '';
  position: absolute;
  left: var(--s3-cursor-x);
  top: var(--s3-cursor-y);
  width: 420px;
  height: 420px;
  margin: -210px 0 0 -210px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--s3-red-glow) 0%, transparent 68%);
  filter: blur(40px);
  transform: scale(calc(0.6 + var(--s3-cursor-active) * 0.4));
  transition: transform 0.35s var(--s3-ease-out);
}

@media (hover: none), (max-width: 900px) {
  body.theme-sian3 .s3-cursor-glow { display: none; }
}

/* ── Noise overlay ── */
body.theme-sian3 .s3-noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px;
}

/* ═══ HEADER ═══ */
body.theme-sian3 .s3-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 300;
  height: var(--s3-header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: env(safe-area-inset-top, 0px) var(--s3-pad-x) 0;
  background: linear-gradient(180deg, rgba(7, 7, 7, 0.92) 0%, rgba(7, 7, 7, 0.55) 72%, transparent 100%);
  backdrop-filter: blur(12px) saturate(1.2);
  -webkit-backdrop-filter: blur(12px) saturate(1.2);
  transition: background 0.45s ease, transform 0.5s var(--s3-ease-out);
}

body.theme-sian3.is-form-open .s3-header {
  transform: translateY(-100%);
  pointer-events: none;
}

body.theme-sian3 .s3-header__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--s3-ink);
}

body.theme-sian3 .s3-header__logo img {
  height: clamp(26px, 3.8vw, 34px);
  width: auto;
  display: block;
}

body.theme-sian3 .s3-header__wordmark {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

body.theme-sian3 .s3-header__wordmark-en {
  font-family: var(--s3-font-display);
  font-weight: 400;
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--s3-ink-muted);
  padding-top: 0.1em;
}

body.theme-sian3 .s3-header__wordmark-ko {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

body.theme-sian3 .s3-header__nav {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 40px);
}

body.theme-sian3 .s3-header__nav-panel {
  display: contents;
}

body.theme-sian3 .s3-header__nav-eyebrow,
body.theme-sian3 .s3-header__link-idx,
body.theme-sian3 .s3-header__link-desc,
body.theme-sian3 .s3-header__nav-cta,
body.theme-sian3 .s3-header__scrim {
  display: none;
}

body.theme-sian3 .s3-header__link {
  display: inline-flex;
  align-items: center;
  font-family: var(--s3-font-display);
  font-weight: 400;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--s3-ink-muted);
  text-decoration: none;
  position: relative;
  transition: color 0.3s ease;
  outline: none;
  -webkit-tap-highlight-color: transparent;
  padding-top: 0.08em;
}

body.theme-sian3 .s3-header__link-copy {
  display: inline-flex;
  flex-direction: column;
}

body.theme-sian3 .s3-header__link-title {
  display: inline;
}

body.theme-sian3 .s3-header__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 1px;
  background: var(--s3-red);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--s3-ease-out);
}

body.theme-sian3 .s3-header__link:hover,
body.theme-sian3 .s3-header__link:focus-visible {
  color: var(--s3-ink);
  outline: none;
}

body.theme-sian3 .s3-header__link:hover::after,
body.theme-sian3 .s3-header__link:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

body.theme-sian3 .s3-header__link:focus,
body.theme-sian3 .s3-header__link:active {
  outline: none;
  box-shadow: none;
}

body.theme-sian3 .s3-header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border: 1px solid var(--s3-border-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  font-family: var(--s3-font-body);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: -0.01em;
  color: var(--s3-ink);
  text-decoration: none;
  cursor: pointer;
  transition:
    background 0.35s ease,
    border-color 0.35s ease,
    color 0.35s ease,
    transform 0.35s var(--s3-ease-snap);
}

body.theme-sian3 .s3-header__cta:hover,
body.theme-sian3 .s3-header__cta:focus-visible {
  background: var(--s3-red);
  border-color: var(--s3-red);
  color: #fff;
}

body.theme-sian3 .s3-header__burger {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  transition: background 0.25s ease, border-color 0.25s ease;
}

body.theme-sian3 .s3-header__burger:hover,
body.theme-sian3 .s3-header__burger:focus-visible {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(196, 21, 31, 0.45);
}

body.theme-sian3 .s3-header__burger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--s3-ink);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

body.theme-sian3 .s3-header.is-menu-open .s3-header__burger {
  background: rgba(196, 21, 31, 0.16);
  border-color: rgba(196, 21, 31, 0.5);
}

body.theme-sian3 .s3-header.is-menu-open .s3-header__burger span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

body.theme-sian3 .s3-header.is-menu-open .s3-header__burger span:nth-child(2) {
  opacity: 0;
}

body.theme-sian3 .s3-header.is-menu-open .s3-header__burger span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* site-header back btn — form mode */
body.theme-sian3 .site-header {
  z-index: 400;
}

body.theme-sian3 .header-back {
  color: var(--s3-ink);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--s3-border-strong);
}

body.theme-sian3.is-form-open .site-header .header-bar {
  background: rgba(17, 17, 17, 0.88);
  border-bottom-color: var(--s3-border);
}

/* ═══ LANDING SHELL ═══ */
body.theme-sian3 #s3Landing {
  position: relative;
  z-index: 10;
  min-height: 100vh;
  min-height: 100dvh;
}

body.theme-sian3.is-form-open #s3Landing {
  display: none !important;
}

body.theme-sian3 .s3-section {
  position: relative;
  padding: var(--s3-section-gap) var(--s3-pad-x);
}

body.theme-sian3 .s3-section__label {
  font-family: var(--s3-font-display);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--s3-red);
  margin-bottom: 20px;
  display: block;
}

body.theme-sian3 .s3-section__title {
  font-family: var(--s3-font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5.5vw, 4.2rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  max-width: 14ch;
}

body.theme-sian3 .s3-section__desc {
  margin-top: 20px;
  max-width: 52ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.7;
  color: var(--s3-ink-muted);
  letter-spacing: -0.01em;
}

/* ── Reveal animations ── */
body.theme-sian3 .s3-reveal {
  opacity: 0;
  transform: translateY(32px);
  transition:
    opacity 0.9s var(--s3-ease-out),
    transform 0.9s var(--s3-ease-out);
}

body.theme-sian3 .s3-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

body.theme-sian3 .s3-reveal[data-reveal-delay="1"] { transition-delay: 0.08s; }
body.theme-sian3 .s3-reveal[data-reveal-delay="2"] { transition-delay: 0.16s; }
body.theme-sian3 .s3-reveal[data-reveal-delay="3"] { transition-delay: 0.24s; }
body.theme-sian3 .s3-reveal[data-reveal-delay="4"] { transition-delay: 0.32s; }

/* ═══ HERO ═══ */
body.theme-sian3 .s3-hero {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding:
    calc(var(--s3-header-h) + 40px)
    var(--s3-pad-x)
    clamp(48px, 8vh, 88px);
  position: relative;
  overflow: hidden;
}

body.theme-sian3 .s3-hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

body.theme-sian3 .s3-hero__grid {
  position: absolute;
  inset: -20%;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 20%, transparent 75%);
  transform: perspective(800px) rotateX(58deg) translateY(-8%);
  opacity: 0.55;
}

body.theme-sian3 .s3-hero__orb {
  position: absolute;
  width: min(58vw, 520px);
  height: min(58vw, 520px);
  border-radius: 50%;
  top: 12%;
  right: -8%;
  background: radial-gradient(circle at 35% 35%, rgba(196, 21, 31, 0.35) 0%, transparent 62%);
  filter: blur(2px);
  animation: s3OrbPulse 8s ease-in-out infinite alternate;
}

@keyframes s3OrbPulse {
  from { transform: scale(0.92) translate(0, 0); opacity: 0.7; }
  to   { transform: scale(1.08) translate(-3%, 4%); opacity: 1; }
}

body.theme-sian3 .s3-hero__eyebrow {
  font-family: var(--s3-font-display);
  font-weight: 700;
  font-size: clamp(11px, 1.2vw, 13px);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--s3-ink-dim);
  margin-bottom: clamp(20px, 3vh, 36px);
  position: relative;
  z-index: 2;
}

body.theme-sian3 .s3-hero__eyebrow strong {
  color: var(--s3-red);
  font-weight: 800;
}

body.theme-sian3 .s3-hero__headline {
  position: relative;
  z-index: 2;
  margin: 0;
  font-family: var(--s3-font-display);
  font-weight: 800;
  font-size: clamp(3.4rem, 13vw, 11.5rem);
  line-height: 0.88;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

body.theme-sian3 .s3-hero__line {
  display: block;
  overflow: hidden;
}

body.theme-sian3 .s3-hero__word {
  display: inline-block;
  transform: translateY(110%);
  opacity: 0;
}

body.theme-sian3 .s3-hero.is-loaded .s3-hero__word {
  transform: translateY(0);
  opacity: 1;
  transition:
    transform 1.1s var(--s3-ease-out),
    opacity 0.8s ease;
}

body.theme-sian3 .s3-hero__word--accent {
  color: var(--s3-red);
  -webkit-text-stroke: 0;
}

body.theme-sian3 .s3-hero__sub {
  position: relative;
  z-index: 2;
  margin-top: clamp(24px, 4vh, 48px);
  max-width: 36ch;
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.65;
  color: var(--s3-ink-muted);
  letter-spacing: -0.02em;
}

body.theme-sian3 .s3-hero__sub em {
  font-style: normal;
  color: var(--s3-ink);
  font-weight: 600;
}

body.theme-sian3 .s3-hero__actions {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(28px, 4vh, 44px);
}

body.theme-sian3 .s3-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 28px 17px;
  border-radius: 999px;
  font-family: var(--s3-font-body);
  font-weight: 600;
  font-size: 14px;
  line-height: 1;
  letter-spacing: -0.01em;
  text-decoration: none;
  cursor: pointer;
  border: none;
  overflow: hidden;
  transition:
    color 0.35s ease,
    background 0.35s ease,
    border-color 0.35s ease,
    box-shadow 0.35s ease;
}

body.theme-sian3 .s3-btn--primary {
  background: var(--s3-red);
  color: #fff;
  box-shadow: 0 8px 32px rgba(196, 21, 31, 0.35);
}

body.theme-sian3 .s3-btn--primary:hover,
body.theme-sian3 .s3-btn--primary:focus-visible {
  background: var(--s3-red-bright);
  box-shadow: 0 12px 40px rgba(196, 21, 31, 0.48);
}

body.theme-sian3 .s3-btn--ghost {
  background: transparent;
  color: var(--s3-ink);
  border: 1px solid var(--s3-border-strong);
}

body.theme-sian3 .s3-btn--ghost:hover,
body.theme-sian3 .s3-btn--ghost:focus-visible {
  border-color: rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.05);
}

body.theme-sian3 .s3-btn__magnet {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.2s var(--s3-ease-out);
}

body.theme-sian3 .s3-btn__arrow {
  width: 18px;
  height: 18px;
  transition: transform 0.35s var(--s3-ease-out);
}

body.theme-sian3 .s3-btn:hover .s3-btn__arrow {
  transform: translateX(4px);
}

body.theme-sian3 .s3-hero__scroll {
  position: absolute;
  left: var(--s3-pad-x);
  bottom: clamp(28px, 5vh, 48px);
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--s3-font-display);
  font-weight: 700;
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--s3-ink-dim);
  z-index: 2;
}

body.theme-sian3 .s3-hero__scroll-line {
  width: 48px;
  height: 1px;
  background: linear-gradient(90deg, var(--s3-red), transparent);
  position: relative;
  overflow: hidden;
}

body.theme-sian3 .s3-hero__scroll-line::after {
  content: '';
  position: absolute;
  inset: 0;
  background: #fff;
  transform: translateX(-100%);
  animation: s3ScrollLine 2.2s ease-in-out infinite;
}

@keyframes s3ScrollLine {
  0%, 100% { transform: translateX(-100%); }
  50%      { transform: translateX(100%); }
}

/* ═══ MARQUEE ═══ */
body.theme-sian3 .s3-marquee {
  padding: 0;
  border-block: 1px solid var(--s3-border);
  background: var(--s3-black-soft);
  overflow: hidden;
  user-select: none;
}

body.theme-sian3 .s3-marquee__track {
  display: flex;
  width: max-content;
  animation: s3Marquee 28s linear infinite;
  will-change: transform;
}

body.theme-sian3 .s3-marquee.is-paused .s3-marquee__track,
body.theme-sian3 .s3-marquee.is-dragging .s3-marquee__track {
  animation-play-state: paused;
}

body.theme-sian3 .s3-marquee__group {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

body.theme-sian3 .s3-marquee__item {
  display: flex;
  align-items: center;
  gap: clamp(20px, 4vw, 48px);
  padding: clamp(18px, 3vh, 28px) clamp(24px, 4vw, 48px);
  font-family: var(--s3-font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 3.5vw, 2.8rem);
  letter-spacing: -0.02em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--s3-ink);
}

body.theme-sian3 .s3-marquee__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--s3-red);
  flex-shrink: 0;
}

body.theme-sian3 .s3-marquee__item span {
  color: var(--s3-ink-dim);
  font-weight: 700;
  font-size: 0.55em;
  letter-spacing: 0.14em;
}

@keyframes s3Marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ═══ MANIFESTO / PROCESS ═══ */
body.theme-sian3 .s3-manifesto {
  background: linear-gradient(180deg, var(--s3-black) 0%, var(--s3-black-soft) 50%, var(--s3-black) 100%);
}

body.theme-sian3 .s3-manifesto__intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 6vw, 80px);
  margin-bottom: clamp(56px, 8vh, 96px);
  align-items: end;
}

body.theme-sian3 .s3-manifesto__thanks {
  font-size: clamp(18px, 2.2vw, 24px);
  line-height: 1.55;
  font-weight: 500;
  color: var(--s3-ink-muted);
  letter-spacing: -0.02em;
  border-left: 2px solid var(--s3-red);
  padding-left: 24px;
}

body.theme-sian3 .s3-manifesto__thanks strong {
  display: block;
  margin-top: 8px;
  font-family: var(--s3-font-display);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 32px);
  color: var(--s3-ink);
  letter-spacing: -0.03em;
}

body.theme-sian3 .s3-manifesto__steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 24px);
}

body.theme-sian3 .s3-manifesto__step {
  position: relative;
  padding: clamp(28px, 4vw, 40px);
  border: 1px solid var(--s3-border);
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  overflow: hidden;
  transition:
    transform 0.55s var(--s3-ease-out),
    border-color 0.45s ease,
    background 0.45s ease;
}

body.theme-sian3 .s3-manifesto__step::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--s3-red-glow) 0%, transparent 55%);
  opacity: 0;
  transition: opacity 0.5s ease;
}

body.theme-sian3 .s3-manifesto__step:hover {
  transform: translateY(-6px);
  border-color: rgba(196, 21, 31, 0.35);
}

body.theme-sian3 .s3-manifesto__step:hover::before {
  opacity: 1;
}

body.theme-sian3 .s3-manifesto__num {
  font-family: var(--s3-font-display);
  font-weight: 400;
  font-size: clamp(2.75rem, 5.5vw, 4.5rem);
  line-height: 1;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.06);
  position: absolute;
  top: 18px;
  right: 18px;
  pointer-events: none;
}

body.theme-sian3 .s3-manifesto__step-label {
  font-family: var(--s3-font-display);
  font-weight: 400;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--s3-red);
  margin-bottom: 14px;
  position: relative;
  padding-top: 0.1em;
}

body.theme-sian3 .s3-manifesto__step-title {
  font-family: var(--s3-font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  letter-spacing: -0.03em;
  margin-bottom: 12px;
  position: relative;
}

body.theme-sian3 .s3-manifesto__step-desc {
  font-size: 14px;
  line-height: 1.65;
  color: var(--s3-ink-muted);
  position: relative;
}

/* ═══ VALUE CARDS GRID ═══ */
body.theme-sian3 .s3-values {
  padding-block: var(--s3-section-gap);
}

body.theme-sian3 .s3-values__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(12px, 1.5vw, 20px);
  margin-top: clamp(40px, 6vh, 64px);
}

body.theme-sian3 .s3-value-card {
  position: relative;
  aspect-ratio: 3 / 4;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--s3-border);
  cursor: default;
  transform-origin: center center;
  transition:
    transform 0.65s var(--s3-ease-out),
    border-color 0.45s ease,
    box-shadow 0.45s ease;
}

body.theme-sian3 .s3-value-card__bg {
  position: absolute;
  inset: 0;
  background: var(--s3-surface);
  transition: transform 0.8s var(--s3-ease-out);
}

body.theme-sian3 .s3-value-card:nth-child(1) .s3-value-card__bg {
  background: linear-gradient(160deg, #1a0a0c 0%, #2d1015 40%, #0c0c0c 100%);
}

body.theme-sian3 .s3-value-card:nth-child(2) .s3-value-card__bg {
  background: linear-gradient(200deg, #0f0f12 0%, #1c1c22 50%, #080808 100%);
}

body.theme-sian3 .s3-value-card:nth-child(3) .s3-value-card__bg {
  background: linear-gradient(140deg, #120808 0%, #261010 45%, #0a0a0a 100%);
}

body.theme-sian3 .s3-value-card:nth-child(4) .s3-value-card__bg {
  background: linear-gradient(180deg, #101010 0%, #1a1214 55%, #070707 100%);
}

body.theme-sian3 .s3-value-card__reveal {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(196, 21, 31, 0.55) 0%, transparent 55%),
              radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 45%);
  opacity: 0;
  transform: scale(1.15);
  transition:
    opacity 0.6s ease,
    transform 0.7s var(--s3-ease-out);
}

body.theme-sian3 .s3-value-card__content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(18px, 2.5vw, 28px);
  z-index: 2;
}

body.theme-sian3 .s3-value-card__en {
  font-family: var(--s3-font-display);
  font-weight: 700;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--s3-red);
  margin-bottom: 8px;
  transform: translateY(8px);
  opacity: 0.7;
  transition: transform 0.5s var(--s3-ease-out), opacity 0.5s ease;
}

body.theme-sian3 .s3-value-card__ko {
  font-family: var(--s3-font-display);
  font-weight: 800;
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  transform: translateY(12px);
  transition: transform 0.55s var(--s3-ease-out);
}

body.theme-sian3 .s3-value-card:hover {
  transform: scale(1.04);
  border-color: rgba(196, 21, 31, 0.4);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
  z-index: 3;
}

body.theme-sian3 .s3-value-card:hover .s3-value-card__bg {
  transform: scale(1.08);
}

body.theme-sian3 .s3-value-card:hover .s3-value-card__reveal {
  opacity: 1;
  transform: scale(1);
}

body.theme-sian3 .s3-value-card:hover .s3-value-card__en {
  transform: translateY(0);
  opacity: 1;
}

body.theme-sian3 .s3-value-card:hover .s3-value-card__ko {
  transform: translateY(0);
}

/* ═══ PORTFOLIO STRIP ═══ */
body.theme-sian3 .s3-strip {
  padding: clamp(48px, 8vh, 80px) 0;
  overflow: hidden;
}

body.theme-sian3 .s3-strip__header {
  padding: 0 var(--s3-pad-x);
  margin-bottom: clamp(28px, 4vh, 40px);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
}

body.theme-sian3 .s3-strip__track {
  display: flex;
  gap: clamp(14px, 2vw, 20px);
  padding: 0 var(--s3-pad-x);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

body.theme-sian3 .s3-strip__track::-webkit-scrollbar {
  display: none;
}

body.theme-sian3 .s3-strip__card {
  flex: 0 0 clamp(240px, 32vw, 340px);
  scroll-snap-align: start;
  aspect-ratio: 16 / 10;
  border-radius: 14px;
  border: 1px solid var(--s3-border);
  overflow: hidden;
  position: relative;
  transition: transform 0.5s var(--s3-ease-out);
}

body.theme-sian3 .s3-strip__card:hover {
  transform: scale(1.03);
}

body.theme-sian3 .s3-strip__card-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--s3-surface-2) 0%, var(--s3-surface) 100%);
}

body.theme-sian3 .s3-strip__card:nth-child(odd) .s3-strip__card-bg {
  background: linear-gradient(125deg, #181214 0%, #0e0e0e 60%, #1a1012 100%);
}

body.theme-sian3 .s3-strip__card:nth-child(even) .s3-strip__card-bg {
  background: linear-gradient(215deg, #101418 0%, #0c0c0c 55%, #141010 100%);
}

body.theme-sian3 .s3-strip__card-label {
  position: absolute;
  left: 20px;
  bottom: 20px;
  font-family: var(--s3-font-display);
  font-weight: 800;
  font-size: clamp(1rem, 2vw, 1.35rem);
  letter-spacing: -0.02em;
}

body.theme-sian3 .s3-strip__card-tag {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--s3-ink-dim);
  padding: 6px 10px;
  border: 1px solid var(--s3-border);
  border-radius: 999px;
}

/* ═══ ROLES ═══ */
body.theme-sian3 .s3-roles {
  background: var(--s3-black-soft);
  border-block: 1px solid var(--s3-border);
}

body.theme-sian3 .s3-roles__inner {
  max-width: 1200px;
  margin: 0 auto;
}

body.theme-sian3 .s3-roles__header {
  text-align: center;
  margin-bottom: clamp(48px, 7vh, 72px);
}

body.theme-sian3 .s3-roles__header .s3-section__title {
  max-width: none;
  margin: 0 auto;
}

body.theme-sian3 .s3-roles__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(16px, 2.5vw, 28px);
}

body.theme-sian3 .s3-role {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  padding: clamp(32px, 5vw, 48px);
  border-radius: 24px;
  border: 1px solid var(--s3-border);
  background: rgba(255, 255, 255, 0.02);
  cursor: pointer;
  overflow: hidden;
  transition:
    transform 0.55s var(--s3-ease-out),
    border-color 0.45s ease,
    background 0.45s ease,
    box-shadow 0.45s ease;
}

body.theme-sian3 .s3-role::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.5s ease;
}

body.theme-sian3 .s3-role--teacher::before {
  background: linear-gradient(145deg, rgba(196, 21, 31, 0.18) 0%, transparent 60%);
}

body.theme-sian3 .s3-role--student::before {
  background: linear-gradient(145deg, rgba(180, 83, 9, 0.18) 0%, transparent 60%);
}

body.theme-sian3 .s3-role:hover,
body.theme-sian3 .s3-role:focus-visible {
  transform: translate3d(0, -6px, 0) scale(1.02);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.32);
}

body.theme-sian3 .s3-role:hover::before,
body.theme-sian3 .s3-role:focus-visible::before {
  opacity: 1;
}

body.theme-sian3 .s3-role--teacher:hover {
  border-color: rgba(196, 21, 31, 0.45);
}

body.theme-sian3 .s3-role--student:hover {
  border-color: rgba(180, 83, 9, 0.45);
}

body.theme-sian3 .s3-role__eyebrow {
  font-family: var(--s3-font-display);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin-bottom: 16px;
  position: relative;
}

body.theme-sian3 .s3-role--teacher .s3-role__eyebrow { color: var(--s3-red); }
body.theme-sian3 .s3-role--student .s3-role__eyebrow { color: var(--s3-student-bright); }

body.theme-sian3 .s3-role__title {
  font-family: var(--s3-font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 5vw, 4rem);
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin-bottom: 16px;
  position: relative;
}

body.theme-sian3 .s3-role__desc {
  font-size: 15px;
  line-height: 1.65;
  color: var(--s3-ink-muted);
  margin-bottom: 28px;
  max-width: 32ch;
  position: relative;
}

body.theme-sian3 .s3-role__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 14px;
  color: var(--s3-ink);
  position: relative;
  margin-top: auto;
}

body.theme-sian3 .s3-role__cta-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--s3-border-strong);
  transition:
    background 0.35s ease,
    border-color 0.35s ease,
    transform 0.35s var(--s3-ease-out);
}

body.theme-sian3 .s3-role--teacher:hover .s3-role__cta-icon {
  background: var(--s3-red);
  border-color: var(--s3-red);
  transform: rotate(-45deg);
}

body.theme-sian3 .s3-role--student:hover .s3-role__cta-icon {
  background: var(--s3-student);
  border-color: var(--s3-student);
  transform: rotate(-45deg);
}

body.theme-sian3 .s3-role__cta svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}

/* Bridge: legacy card IDs inside landing */
body.theme-sian3 #cardTeacher,
body.theme-sian3 #cardStudent {
  /* hidden when using s3-role cards; visible if placed in DOM */
}

body.theme-sian3 .s3-roles .glass-card {
  display: none;
}

/* ═══ CTA ═══ */
body.theme-sian3 .s3-cta {
  text-align: center;
  padding-block: clamp(100px, 16vh, 180px);
  position: relative;
  overflow: hidden;
}

body.theme-sian3 .s3-cta__glow {
  position: absolute;
  width: 60vw;
  height: 60vw;
  max-width: 600px;
  max-height: 600px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(196, 21, 31, 0.2) 0%, transparent 65%);
  pointer-events: none;
}

body.theme-sian3 .s3-cta__en {
  font-family: var(--s3-font-display);
  font-weight: 800;
  font-size: clamp(2.8rem, 9vw, 7rem);
  line-height: 0.92;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  margin-bottom: 12px;
  position: relative;
}

body.theme-sian3 .s3-cta__ko {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--s3-ink-muted);
  margin-bottom: clamp(32px, 5vh, 48px);
  position: relative;
}

body.theme-sian3 .s3-cta__btn {
  position: relative;
  font-size: 15px;
  padding: 18px 36px;
}

body.theme-sian3 .s3-footer {
  padding: clamp(32px, 5vh, 48px) var(--s3-pad-x);
  border-top: 1px solid var(--s3-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 12px;
  color: var(--s3-ink-dim);
}

body.theme-sian3 .s3-footer__brand {
  font-family: var(--s3-font-display);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--s3-ink-muted);
}

/* ═══ STICKY CTA BAR ═══ */
body.theme-sian3 .s3-sticky-cta {
  position: fixed;
  bottom: clamp(16px, 3vh, 28px);
  left: 50%;
  transform: translateX(-50%) translateY(calc(120% + env(safe-area-inset-bottom, 0px)));
  z-index: 280;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 10px 10px 20px;
  border-radius: 999px;
  background: rgba(12, 12, 12, 0.88);
  border: 1px solid var(--s3-border-strong);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
  transition: transform 0.55s var(--s3-ease-out);
  pointer-events: none;
}

body.theme-sian3 .s3-sticky-cta.is-visible {
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

body.theme-sian3.is-form-open .s3-sticky-cta {
  transform: translateX(-50%) translateY(calc(120% + env(safe-area-inset-bottom, 0px)));
  pointer-events: none;
}

body.theme-sian3 .s3-sticky-cta__text {
  font-size: 13px;
  font-weight: 500;
  color: var(--s3-ink-muted);
  white-space: nowrap;
}

body.theme-sian3 .s3-sticky-cta__text strong {
  color: var(--s3-ink);
  font-weight: 700;
}

/* ═══ FORM SHELL base (details in sian3-app.css) ═══ */
body.theme-sian3 .app-main-shell,
body.theme-sian3 .s3-form-shell {
  display: none;
}

body.theme-sian3.is-form-open .app-main-shell,
body.theme-sian3.is-form-open .s3-form-shell {
  display: block !important;
}

body.theme-sian3.is-form-open .scroll-stage,
body.theme-sian3.is-form-open .sticky-viewport {
  display: none !important;
}

html.is-locked:has(body.theme-sian3) {
  overflow: hidden;
}

body.theme-sian3 .form-transition-veil {
  background: var(--s3-black);
}

body.theme-sian3.is-student.is-form-open .split-layout__form {
  --form-accent: var(--s3-student);
}

/* ═══ ABOUT SECTION (optional anchor) ═══ */
body.theme-sian3 .s3-about {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}

body.theme-sian3 .s3-about__visual {
  aspect-ratio: 4 / 5;
  border-radius: 20px;
  border: 1px solid var(--s3-border);
  overflow: hidden;
  position: relative;
}

body.theme-sian3 .s3-about__visual-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(160deg, #1a1012 0%, #0c0c0c 40%, #181012 100%),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 40px,
      rgba(196, 21, 31, 0.04) 40px,
      rgba(196, 21, 31, 0.04) 41px
    );
}

body.theme-sian3 .s3-about__visual-label {
  position: absolute;
  bottom: 24px;
  left: 24px;
  font-family: var(--s3-font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.03em;
  line-height: 1;
}

body.theme-sian3 .s3-about__visual-label span {
  display: block;
  font-size: 0.35em;
  letter-spacing: 0.2em;
  color: var(--s3-red);
  margin-bottom: 8px;
}

body.theme-sian3 .s3-about__list {
  list-style: none;
  margin-top: 28px;
}

body.theme-sian3 .s3-about__list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--s3-border);
  font-size: 15px;
  color: var(--s3-ink-muted);
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

body.theme-sian3 .s3-about__list li strong {
  color: var(--s3-ink);
  font-weight: 600;
}

/* ═══ PARALLAX LAYER ═══ */
body.theme-sian3 [data-s3-parallax] {
  will-change: transform;
  transition: transform 0.1s linear;
}

/* ═══ RESPONSIVE ═══ */
@media (max-width: 1024px) {
  body.theme-sian3 .s3-values__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  body.theme-sian3 .s3-manifesto__intro {
    grid-template-columns: 1fr;
  }

  body.theme-sian3 .s3-about {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  body.theme-sian3 .s3-header__scrim {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 290;
    background:
      radial-gradient(60% 40% at 80% 0%, rgba(196, 21, 31, 0.2) 0%, transparent 55%),
      rgba(4, 3, 4, 0.78);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
    -webkit-backdrop-filter: blur(14px) saturate(1.1);
    backdrop-filter: blur(14px) saturate(1.1);
  }

  body.theme-sian3.is-nav-open .s3-header__scrim {
    opacity: 1;
    pointer-events: auto;
  }

  /* Dim snap dots while menu is open so they don't fight nav copy */
  body.theme-sian3.is-nav-open .s3-snap-progress {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
  }

  body.theme-sian3 .s3-header__nav {
    position: fixed;
    top: calc(var(--s3-header-h) + 8px);
    left: max(12px, env(safe-area-inset-left, 0px));
    right: max(12px, env(safe-area-inset-right, 0px));
    z-index: 310;
    display: block;
    padding: 0;
    background: transparent;
    border: 0;
    transform: translateY(-10px) scale(0.985);
    opacity: 0;
    pointer-events: none;
    transition:
      opacity 0.32s ease,
      transform 0.38s cubic-bezier(0.22, 1, 0.36, 1);
  }

  body.theme-sian3 .s3-header.is-menu-open .s3-header__nav {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
  }

  body.theme-sian3 .s3-header__nav-panel {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 18px 16px 16px;
    border-radius: 22px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background:
      linear-gradient(165deg, rgba(32, 24, 26, 0.97) 0%, rgba(14, 11, 12, 0.98) 55%, rgba(10, 8, 9, 0.99) 100%);
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.1),
      0 28px 64px rgba(0, 0, 0, 0.62),
      0 0 0 1px rgba(0, 0, 0, 0.35);
    -webkit-backdrop-filter: blur(28px) saturate(1.2);
    backdrop-filter: blur(28px) saturate(1.2);
    isolation: isolate;
  }

  body.theme-sian3 .s3-header__nav-eyebrow {
    display: block;
    margin: 0 6px 10px;
    font-family: var(--s3-font-display);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: rgba(245, 245, 245, 0.42);
  }

  body.theme-sian3 .s3-header__link {
    display: grid;
    grid-template-columns: 40px minmax(0, 1fr);
    align-items: center;
    gap: 10px;
    padding: 14px 12px;
    margin: 0;
    border-radius: 14px;
    border: 1px solid transparent;
    font-size: 15px;
    letter-spacing: -0.01em;
    text-transform: none;
    color: rgba(245, 245, 245, 0.92);
    background: transparent;
    outline: none;
    box-shadow: none;
    -webkit-tap-highlight-color: transparent;
    transition:
      background 0.22s ease,
      border-color 0.22s ease,
      box-shadow 0.22s ease,
      transform 0.22s ease;
  }

  body.theme-sian3 .s3-header__link::after {
    display: none;
  }

  body.theme-sian3 .s3-header__link-idx {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 11px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    font-family: var(--s3-font-display);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: rgba(255, 138, 144, 0.92);
    transition: background 0.22s ease, border-color 0.22s ease, color 0.22s ease;
  }

  body.theme-sian3 .s3-header__link-copy {
    min-width: 0;
    gap: 3px;
  }

  body.theme-sian3 .s3-header__link-title {
    font-family: var(--s3-font-body);
    font-size: 15px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: #fff;
  }

  body.theme-sian3 .s3-header__link-desc {
    display: block;
    font-family: var(--s3-font-body);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: -0.01em;
    line-height: 1.35;
    color: rgba(245, 245, 245, 0.48);
    word-break: keep-all;
  }

  body.theme-sian3 .s3-header__link:hover,
  body.theme-sian3 .s3-header__link:focus-visible {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.1);
    color: #fff;
    outline: none;
    box-shadow: none;
    transform: translateY(-1px);
  }

  body.theme-sian3 .s3-header__link:focus,
  body.theme-sian3 .s3-header__link:active,
  body.theme-sian3 .s3-header__link.is-pressing {
    outline: none !important;
    box-shadow: none !important;
    background: rgba(196, 21, 31, 0.14);
    border-color: rgba(196, 21, 31, 0.38);
    color: #fff;
    transform: none;
  }

  body.theme-sian3 .s3-header__link:hover .s3-header__link-idx,
  body.theme-sian3 .s3-header__link:focus-visible .s3-header__link-idx {
    border-color: rgba(196, 21, 31, 0.4);
    background: rgba(196, 21, 31, 0.16);
  }

  body.theme-sian3 .s3-header__link:focus .s3-header__link-idx,
  body.theme-sian3 .s3-header__link:active .s3-header__link-idx,
  body.theme-sian3 .s3-header__link.is-pressing .s3-header__link-idx {
    border-color: rgba(196, 21, 31, 0.55);
    background: rgba(196, 21, 31, 0.22);
    color: #ffb0b5;
  }

  body.theme-sian3 .s3-header__nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    min-height: 48px;
    margin-top: 10px;
    padding: 0 18px;
    border: 0;
    border-radius: 999px;
    background: var(--s3-red);
    color: #fff;
    font-family: var(--s3-font-body);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1;
    cursor: pointer;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    box-shadow: 0 14px 32px rgba(196, 21, 31, 0.32);
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  }

  body.theme-sian3 .s3-header__nav-cta:hover,
  body.theme-sian3 .s3-header__nav-cta:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 18px 36px rgba(196, 21, 31, 0.4);
    outline: none;
  }

  body.theme-sian3 .s3-header__nav-cta:focus,
  body.theme-sian3 .s3-header__nav-cta:active {
    outline: none;
    box-shadow: 0 10px 24px rgba(196, 21, 31, 0.28);
  }

  body.theme-sian3 .s3-header__nav-cta-arrow {
    font-size: 15px;
    line-height: 1;
    opacity: 0.9;
  }

  body.theme-sian3 .s3-header__cta {
    margin-top: 12px;
    justify-content: center;
  }

  body.theme-sian3 .s3-header__burger {
    display: flex;
  }

  body.theme-sian3 .s3-header__wordmark {
    display: none;
  }

  body.theme-sian3.is-nav-open {
    overflow: hidden;
  }

  body.theme-sian3 .s3-manifesto__steps {
    grid-template-columns: 1fr;
  }

  body.theme-sian3 .s3-roles__grid {
    grid-template-columns: 1fr;
  }

  body.theme-sian3 .s3-values__grid {
    grid-template-columns: 1fr 1fr;
  }

  body.theme-sian3 .s3-hero__scroll {
    display: none;
  }

  body.theme-sian3 .s3-sticky-cta {
    left: 16px;
    right: 16px;
    transform: translateY(calc(120% + env(safe-area-inset-bottom, 0px)));
    width: auto;
  }

  body.theme-sian3 .s3-sticky-cta.is-visible {
    transform: translateY(0);
  }
}

@media (max-width: 480px) {
  body.theme-sian3 .s3-values__grid {
    grid-template-columns: 1fr;
  }

  body.theme-sian3 .s3-value-card {
    aspect-ratio: 16 / 10;
  }

  /* Keep hero CTAs as a compact horizontal pill row (not stacked off-screen) */
  body.theme-sian3 .s3-hero__actions {
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: stretch;
  }

  body.theme-sian3 .s3-btn {
    justify-content: center;
  }

  body.theme-sian3 .s3-sticky-cta {
    flex-direction: column;
    border-radius: 20px;
    padding: 16px;
    text-align: center;
  }

  body.theme-sian3 .s3-sticky-cta__text {
    white-space: normal;
  }
}

/* ═══ REDUCED MOTION ═══ */
@media (prefers-reduced-motion: reduce) {
  body.theme-sian3 .s3-marquee__track {
    animation: none;
  }

  body.theme-sian3 .s3-hero__scroll-line::after {
    animation: none;
  }

  body.theme-sian3 .s3-hero__orb {
    animation: none;
  }

  body.theme-sian3 .s3-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  body.theme-sian3 .s3-hero__word {
    transform: none;
    opacity: 1;
    transition: none;
  }

  body.theme-sian3 .s3-value-card:hover,
  body.theme-sian3 .s3-role:hover {
    transform: none;
  }
}

/* ═══ PRINT ═══ */
@media print {
  body.theme-sian3 .s3-header,
  body.theme-sian3 .s3-sticky-cta,
  body.theme-sian3 .s3-cursor-glow,
  body.theme-sian3 .s3-noise {
    display: none !important;
  }
}