/* ============================================================
   OrangeBook.CN — Construction Page
   Design language: Material 3 Expressive
   Tokens → Components → Utilities
   ============================================================ */

/* ---------- 1. Design Tokens ---------- */
:root {
  /* Type scale (M3 expressive, fluid) */
  --font-display: "Roboto Flex", "Noto Sans SC", -apple-system, "PingFang SC",
    "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", ui-monospace, "Cascadia Code",
    Consolas, monospace;

  --fs-display: clamp(3.2rem, 13vw, 9.5rem);
  --fs-h1: clamp(2.2rem, 6.4vw, 4.6rem);
  --fs-h2: clamp(1.75rem, 4.4vw, 3.2rem);
  --fs-h3: clamp(1.15rem, 2vw, 1.5rem);
  --fs-body: clamp(0.95rem, 1.1vw, 1.0625rem);
  --fs-sm: 0.875rem;
  --fs-xs: 0.78rem;

  /* Shape scale — M3 expressive shape morphing */
  --r-xs: 8px;
  --r-sm: 14px;
  --r-md: 22px;
  --r-lg: 30px;
  --r-xl: 40px;
  --r-2xl: 54px;
  --r-full: 999px;

  /* Spacing */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 64px;
  --s-9: 96px;
  --s-10: 128px;

  --shell: 1240px;
  --gut: clamp(20px, 5vw, 56px);

  /* Motion — springy, expressive */
  --ease-spring: linear(
    0, 0.006, 0.025 2.8%, 0.101 6.1%, 0.539 18.9%, 0.721 25.3%, 0.849 31.5%,
    0.937 38.1%, 0.968 41.8%, 0.991 45.7%, 1.006 50.1%, 1.015 55%, 1.017 63.9%,
    1.001
  );
  --ease-out: cubic-bezier(0.2, 0.9, 0.25, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --t-fast: 180ms;
  --t-base: 340ms;
  --t-slow: 620ms;

  --z-canvas: 0;
  --z-base: 10;
  --z-nav: 100;
  --z-toast: 300;
}

/* ---- Light scheme ---- */
:root,
[data-theme="light"] {
  --primary: #8c3f10;
  --on-primary: #ffffff;
  --primary-container: #ffdbc8;
  --on-primary-container: #351000;

  --secondary: #00696e;
  --on-secondary: #ffffff;
  --secondary-container: #9df0f6;
  --on-secondary-container: #002022;

  --tertiary: #4f5b92;
  --on-tertiary: #ffffff;
  --tertiary-container: #dde1ff;
  --on-tertiary-container: #05164b;

  --error: #ba1a1a;
  --on-error: #ffffff;
  --error-container: #ffdad6;
  --on-error-container: #410002;

  --surface: #fff8f5;
  --on-surface: #221a14;
  --on-surface-variant: #52443c;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #fff1ea;
  --surface-container: #fcebe2;
  --surface-container-high: #f7e5dc;
  --surface-container-highest: #f1dfd5;

  --inverse-surface: #35291f;
  --inverse-on-surface: #fff8f5;
  --inverse-primary: #8c3f10;

  --outline: #85736b;
  --outline-variant: #d7c3b8;
  --scrim: rgba(0, 0, 0, 0.45);
  --shadow: rgba(53, 24, 8, 0.12);

  --hero-glow-1: rgba(255, 150, 80, 0.5);
  --hero-glow-2: rgba(120, 190, 255, 0.42);
  --hero-glow-3: rgba(180, 150, 255, 0.4);
  --grain-opacity: 0.35;
  --grain-light: rgba(80, 45, 20, 0.06);
}

/* ---- Dark scheme ---- */
[data-theme="dark"] {
  --primary: #ffb694;
  --on-primary: #552100;
  --primary-container: #703100;
  --on-primary-container: #ffdbc8;

  --secondary: #81d4da;
  --on-secondary: #00363a;
  --secondary-container: #004f53;
  --on-secondary-container: #9df0f6;

  --tertiary: #bbc3ff;
  --on-tertiary: #1c2d61;
  --tertiary-container: #354379;
  --on-tertiary-container: #dde1ff;

  --error: #ffb4ab;
  --on-error: #690005;
  --error-container: #93000a;
  --on-error-container: #ffdad6;

  --surface: #17120e;
  --on-surface: #f0dfd6;
  --on-surface-variant: #d7c3b8;
  --surface-container-lowest: #100c09;
  --surface-container-low: #201a15;
  --surface-container: #251e19;
  --surface-container-high: #302822;
  --surface-container-highest: #3b332d;

  --inverse-surface: #f0dfd6;
  --inverse-on-surface: #2c221b;
  --inverse-primary: #ffb694;

  --outline: #a08d84;
  --outline-variant: #52443c;
  --scrim: rgba(0, 0, 0, 0.6);
  --shadow: rgba(0, 0, 0, 0.5);

  --hero-glow-1: rgba(255, 130, 60, 0.34);
  --hero-glow-2: rgba(80, 170, 255, 0.28);
  --hero-glow-3: rgba(160, 120, 255, 0.3);
  --grain-opacity: 0.55;
  --grain-light: rgba(255, 220, 200, 0.055);
}

/* ---------- 2. Reset & Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 104px;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.65;
  color: var(--on-surface);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--t-base) var(--ease-out),
    color var(--t-base) var(--ease-out);
}

body.is-locked {
  overflow: hidden;
}

h1,
h2,
h3,
p {
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

::selection {
  background: var(--primary-container);
  color: var(--on-primary-container);
}

:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
  border-radius: var(--r-xs);
}

/* Visually hidden but available to assistive tech */
.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;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 11px;
  height: 11px;
}
::-webkit-scrollbar-track {
  background: var(--surface-container);
}
::-webkit-scrollbar-thumb {
  background: var(--outline-variant);
  border: 3px solid var(--surface-container);
  border-radius: var(--r-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--outline);
}

/* ---------- 3. Ambient layers ---------- */
.aurora {
  position: fixed;
  inset: 0;
  z-index: var(--z-canvas);
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.85;
}

.grain {
  position: fixed;
  inset: -50%;
  z-index: 1;
  pointer-events: none;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
  animation: grainShift 8s steps(6) infinite;
}

@keyframes grainShift {
  0% { transform: translate(0, 0); }
  20% { transform: translate(-3%, 2%); }
  40% { transform: translate(2%, -3%); }
  60% { transform: translate(-2%, -2%); }
  80% { transform: translate(3%, 1%); }
  100% { transform: translate(0, 0); }
}

.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 2;
  width: 460px;
  height: 460px;
  margin: -230px 0 0 -230px;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(
    circle,
    color-mix(in srgb, var(--primary) 16%, transparent) 0%,
    transparent 68%
  );
  transition: opacity 600ms var(--ease-out);
  will-change: transform;
}

.cursor-glow.is-on {
  opacity: 1;
}

.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999;
  width: 34px;
  height: 34px;
  margin: -17px 0 0 -17px;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  border: 1.5px solid color-mix(in srgb, var(--primary) 62%, transparent);
  transition: width 280ms var(--ease-spring), height 280ms var(--ease-spring),
    margin 280ms var(--ease-spring), opacity 260ms var(--ease-out),
    background-color 260ms var(--ease-out), border-color 260ms var(--ease-out);
  will-change: transform;
}

.cursor-ring.is-on {
  opacity: 1;
}

.cursor-ring.is-hover {
  width: 58px;
  height: 58px;
  margin: -29px 0 0 -29px;
  background: color-mix(in srgb, var(--primary) 13%, transparent);
  border-color: transparent;
}

@media (hover: none), (pointer: coarse) {
  .cursor-ring,
  .cursor-glow {
    display: none;
  }
}

/* Scroll progress */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 200;
  width: 100%;
  height: 3px;
  background: transparent;
}

.scroll-progress i {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: 0 var(--r-full) var(--r-full) 0;
  background: linear-gradient(
    90deg,
    var(--primary),
    var(--secondary),
    var(--tertiary)
  );
  transition: width 90ms linear;
}

/* ---------- 4. Boot screen ---------- */
.boot {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: var(--s-6);
  background: var(--surface);
  transition: opacity 620ms var(--ease-out), visibility 620ms;
}

.boot.is-done {
  opacity: 0;
  visibility: hidden;
}

.boot__shape {
  width: 92px;
  height: 92px;
  background: var(--primary);
  border-radius: 28px;
  animation: bootMorph 1.5s var(--ease-spring) infinite alternate;
  box-shadow: 0 18px 44px -14px var(--primary);
}

@keyframes bootMorph {
  0% { border-radius: 28px; transform: rotate(0deg) scale(1); }
  50% { border-radius: 50% 50% 12px 50%; transform: rotate(45deg) scale(0.9); }
  100% { border-radius: 50px; transform: rotate(90deg) scale(1.06); }
}

.boot__word {
  display: flex;
  gap: 3px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.1rem, 3.6vw, 1.9rem);
  letter-spacing: 0.12em;
  color: var(--on-surface);
}

.boot__word span {
  opacity: 0;
  transform: translateY(14px) rotate(6deg);
  animation: bootLetter 620ms var(--ease-spring) forwards;
}

.boot__word span:nth-child(1) { animation-delay: 60ms; }
.boot__word span:nth-child(2) { animation-delay: 110ms; }
.boot__word span:nth-child(3) { animation-delay: 160ms; }
.boot__word span:nth-child(4) { animation-delay: 210ms; }
.boot__word span:nth-child(5) { animation-delay: 260ms; }
.boot__word span:nth-child(6) { animation-delay: 310ms; }
.boot__word span:nth-child(7) { animation-delay: 360ms; }
.boot__word span:nth-child(8) { animation-delay: 410ms; }
.boot__word span:nth-child(9) { animation-delay: 460ms; }
.boot__word span:nth-child(10) { animation-delay: 510ms; }

@keyframes bootLetter {
  to { opacity: 1; transform: translateY(0) rotate(0); }
}

.boot__bar {
  width: 168px;
  height: 5px;
  border-radius: var(--r-full);
  background: var(--surface-container-high);
  overflow: hidden;
}

.boot__bar i {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--primary), var(--tertiary));
  animation: bootBar 1.35s var(--ease-out) forwards;
}

@keyframes bootBar {
  to { width: 100%; }
}

/* ---------- 5. Top bar ---------- */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  padding: var(--s-3) var(--gut);
  border-radius: 0;
  transition: background-color var(--t-base) var(--ease-out),
    backdrop-filter var(--t-base) var(--ease-out),
    padding var(--t-base) var(--ease-out),
    border-color var(--t-base) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.topbar.is-stuck {
  padding-top: var(--s-2);
  padding-bottom: var(--s-2);
  background: color-mix(in srgb, var(--surface) 78%, transparent);
  backdrop-filter: blur(18px) saturate(1.6);
  -webkit-backdrop-filter: blur(18px) saturate(1.6);
  border-bottom-color: color-mix(in srgb, var(--outline-variant) 55%, transparent);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.brand__mark {
  position: relative;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: linear-gradient(140deg, var(--primary), var(--tertiary));
  box-shadow: 0 6px 18px -6px var(--primary);
  transition: border-radius var(--t-base) var(--ease-spring),
    transform var(--t-base) var(--ease-spring);
}

.brand:hover .brand__mark {
  border-radius: 50%;
  transform: rotate(-12deg) scale(1.06);
}

.brand__mark--sm {
  width: 34px;
  height: 34px;
  border-radius: 11px;
}

.brand__pupil {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--on-primary);
  animation: pupilPulse 3.2s var(--ease-in-out) infinite;
}

@keyframes pupilPulse {
  0%, 100% { transform: scale(1); opacity: 0.92; }
  50% { transform: scale(0.7); opacity: 1; }
}

.brand__text {
  display: flex;
  align-items: baseline;
  font-size: 1.06rem;
  font-weight: 800;
}

.brand__text em {
  font-style: normal;
  font-weight: 500;
  color: var(--on-surface-variant);
}

.nav {
  display: flex;
  gap: var(--s-1);
  padding: var(--s-1);
  border-radius: var(--r-full);
  background: color-mix(in srgb, var(--surface-container) 70%, transparent);
  border: 1px solid color-mix(in srgb, var(--outline-variant) 45%, transparent);
}

.nav__link {
  position: relative;
  padding: 8px 18px;
  border-radius: var(--r-full);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--on-surface-variant);
  transition: color var(--t-fast) var(--ease-out),
    background-color var(--t-fast) var(--ease-out),
    transform var(--t-fast) var(--ease-spring);
}

.nav__link:hover {
  color: var(--on-surface);
  background: color-mix(in srgb, var(--on-surface) 8%, transparent);
}

/* Scroll-spy active state */
.nav__link.is-active {
  color: var(--on-primary-container);
  background: var(--primary-container);
}

.nav__link:active {
  transform: scale(0.94);
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  flex-shrink: 0;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 40px;
  padding: 0 15px 0 12px;
  border-radius: var(--r-full);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--on-surface-variant);
  border: 1px solid color-mix(in srgb, var(--outline-variant) 65%, transparent);
  transition: background-color var(--t-fast) var(--ease-out),
    color var(--t-fast) var(--ease-out),
    border-radius var(--t-fast) var(--ease-spring),
    transform var(--t-fast) var(--ease-spring);
}

.icon-btn:hover {
  color: var(--on-surface);
  background: color-mix(in srgb, var(--on-surface) 7%, transparent);
  border-radius: var(--r-sm);
}

.icon-btn:active {
  transform: scale(0.94);
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}

.icon-btn .ico-moon { display: none; }
[data-theme="dark"] .icon-btn .ico-sun { display: none; }
[data-theme="dark"] .icon-btn .ico-moon { display: block; }

/* ---------- 6. Buttons ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 54px;
  padding: 0 30px;
  border-radius: var(--r-full);
  font-size: var(--fs-body);
  font-weight: 700;
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow: hidden;
  isolation: isolate;
  transition: box-shadow var(--t-base) var(--ease-out),
    transform var(--t-base) var(--ease-spring),
    background-color var(--t-base) var(--ease-out),
    border-radius var(--t-base) var(--ease-spring);
}

.btn svg {
  width: 19px;
  height: 19px;
  flex-shrink: 0;
  transition: transform var(--t-base) var(--ease-spring);
}

.btn > span,
.btn > svg {
  position: relative;
  z-index: 1;
}

/* State layer */
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: currentColor;
  opacity: 0;
  transition: opacity var(--t-fast) var(--ease-out);
}

.btn:hover::before { opacity: 0.09; }
.btn:active::before { opacity: 0.16; }

.btn--filled {
  background: var(--primary);
  color: var(--on-primary);
  box-shadow: 0 3px 0 0 color-mix(in srgb, var(--on-primary) 22%, transparent),
    0 14px 30px -12px color-mix(in srgb, var(--primary) 78%, transparent);
}

.btn--filled:hover {
  border-radius: var(--r-md);
  box-shadow: 0 3px 0 0 color-mix(in srgb, var(--on-primary) 22%, transparent),
    0 22px 42px -14px color-mix(in srgb, var(--primary) 88%, transparent);
}

.btn--filled:hover svg { transform: translateX(4px); }

.btn--filled:active {
  transform: translateY(3px);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--on-primary) 22%, transparent),
    0 8px 18px -10px color-mix(in srgb, var(--primary) 70%, transparent);
}

.btn--tonal {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
}

.btn--tonal:hover {
  border-radius: var(--r-md);
  box-shadow: 0 14px 28px -14px
    color-mix(in srgb, var(--secondary) 72%, transparent);
}

.btn--tonal:active { transform: scale(0.96); }

.btn--outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--outline-variant);
}

.btn--outline:hover {
  background: color-mix(in srgb, var(--primary) 10%, transparent);
  border-color: var(--primary);
  border-radius: var(--r-md);
}

.btn--sm {
  height: 40px;
  padding: 0 18px;
  font-size: var(--fs-sm);
  border-radius: var(--r-full);
}

.btn--sm svg { width: 16px; height: 16px; }

/* ---------- 7. Chips ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 18px 8px 14px;
  border-radius: var(--r-full);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid color-mix(in srgb, var(--outline-variant) 60%, transparent);
  background: color-mix(in srgb, var(--surface-container) 80%, transparent);
  color: var(--on-surface-variant);
}

.chip--live {
  color: var(--on-surface);
  border-color: transparent;
  background: var(--primary-container);
  color: var(--on-primary-container);
  position: relative;
  overflow: hidden;
}

.chip--live::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    transparent 20%,
    color-mix(in srgb, var(--on-primary-container) 22%, transparent) 50%,
    transparent 80%
  );
  transform: translateX(-100%);
  animation: shimmer 3.6s var(--ease-in-out) infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  60%, 100% { transform: translateX(100%); }
}

.pulse {
  position: relative;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--on-primary-container);
  flex-shrink: 0;
}

.pulse::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: inherit;
  animation: pulseRing 1.9s var(--ease-out) infinite;
}

@keyframes pulseRing {
  0% { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(3.6); opacity: 0; }
}

.chip--solid {
  background: var(--surface-container-highest);
  color: var(--on-surface);
  border-color: transparent;
  font-size: var(--fs-xs);
  padding: 6px 15px 6px 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------- 8. Hero ---------- */
.hero {
  position: relative;
  z-index: var(--z-base);
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: clamp(130px, 17vh, 190px) var(--gut) clamp(90px, 12vh, 130px);
  overflow: hidden;
}

.hero__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-display);
  font-weight: 850;
  line-height: 0.88;
  letter-spacing: -0.045em;
  margin: var(--s-5) 0 var(--s-5);
}

.hero__line {
  display: block;
  font-variation-settings: "opsz" 144;
}

.hero__line--accent {
  background: linear-gradient(
    100deg,
    var(--primary) 0%,
    var(--tertiary) 46%,
    var(--secondary) 92%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  background-size: 220% 100%;
  animation: hueSlide 9s var(--ease-in-out) infinite;
}

@keyframes hueSlide {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero__dot {
  display: inline-block;
  width: 0.2em;
  height: 0.2em;
  vertical-align: super;
  margin-left: 0.06em;
  border-radius: 50%;
  background: var(--primary);
  animation: dotBlink 2.4s var(--ease-in-out) infinite;
}

@keyframes dotBlink {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(0.45); opacity: 0.55; }
}

.hero__lead {
  max-width: 30em;
  font-size: clamp(1.02rem, 1.6vw, 1.25rem);
  line-height: 1.72;
  color: var(--on-surface-variant);
}

.hero__lead b {
  font-weight: 700;
  color: var(--on-surface);
  padding-bottom: 2px;
  background: linear-gradient(
    to top,
    color-mix(in srgb, var(--primary) 32%, transparent) 0%,
    transparent 62%
  );
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  margin-top: var(--s-6);
}

.hero__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--s-4) var(--s-5);
  margin-top: var(--s-7);
  padding-top: var(--s-5);
  border-top: 1px solid color-mix(in srgb, var(--outline-variant) 55%, transparent);
  max-width: 640px;
}

.meta {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.meta__k {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
}

.meta__v {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--on-surface);
}

.meta__v a {
  position: relative;
  transition: color var(--t-fast) var(--ease-out);
}

.meta__v a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1.5px;
  border-radius: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-base) var(--ease-out);
}

.meta__v a:hover { color: var(--primary); }
.meta__v a:hover::after { transform: scaleX(1); }

.meta__sep {
  width: 1px;
  height: 34px;
  background: color-mix(in srgb, var(--outline-variant) 65%, transparent);
}

/* Hero art */
.hero__art {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 46% 54% 62% 38% / 55% 42% 58% 45%;
  filter: blur(78px);
  opacity: 0.72;
  will-change: transform;
}

.blob--a {
  width: 46vw;
  height: 46vw;
  max-width: 640px;
  max-height: 640px;
  top: -12%;
  right: -6%;
  background: var(--hero-glow-1);
  animation: driftA 22s var(--ease-in-out) infinite alternate;
}

.blob--b {
  width: 40vw;
  height: 40vw;
  max-width: 540px;
  max-height: 540px;
  bottom: -18%;
  left: -8%;
  background: var(--hero-glow-2);
  animation: driftB 26s var(--ease-in-out) infinite alternate;
}

.blob--c {
  width: 28vw;
  height: 28vw;
  max-width: 380px;
  max-height: 380px;
  top: 42%;
  left: 38%;
  background: var(--hero-glow-3);
  animation: driftC 19s var(--ease-in-out) infinite alternate;
}

@keyframes driftA {
  0% { transform: translate(0, 0) rotate(0deg) scale(1); border-radius: 46% 54% 62% 38% / 55% 42% 58% 45%; }
  100% { transform: translate(-7%, 9%) rotate(24deg) scale(1.14); border-radius: 62% 38% 40% 60% / 42% 60% 40% 58%; }
}

@keyframes driftB {
  0% { transform: translate(0, 0) rotate(0deg) scale(1.05); }
  100% { transform: translate(9%, -7%) rotate(-19deg) scale(0.92); border-radius: 38% 62% 55% 45% / 60% 40% 60% 40%; }
}

@keyframes driftC {
  0% { transform: translate(-50%, -50%) scale(0.9); }
  100% { transform: translate(-38%, -62%) scale(1.2); }
}

.orbit {
  position: absolute;
  top: 46%;
  right: 14%;
  width: clamp(150px, 20vw, 250px);
  aspect-ratio: 1;
  transform: translate(50%, -50%);
  display: grid;
  place-items: center;
  opacity: 0.9;
}

.orbit__ring,
.orbit__ring--2 {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1.5px solid
    color-mix(in srgb, var(--primary) 40%, transparent);
  animation: spin 18s linear infinite;
}

.orbit__ring--2 {
  inset: 20%;
  border-style: dashed;
  border-color: color-mix(in srgb, var(--tertiary) 52%, transparent);
  animation: spin 12s linear infinite reverse;
}

.orbit__core {
  width: 34%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: linear-gradient(150deg, var(--primary), var(--tertiary));
  box-shadow: 0 0 60px -6px var(--primary);
  animation: coreBreathe 5s var(--ease-in-out) infinite;
}

.orbit__sat {
  position: absolute;
  top: -5px;
  left: 50%;
  width: 13px;
  height: 13px;
  margin-left: -6.5px;
  border-radius: 50%;
  background: var(--on-primary);
  box-shadow: 0 0 18px 3px color-mix(in srgb, var(--primary) 70%, transparent);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes coreBreathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.12); }
}

.scroll-hint {
  position: absolute;
  bottom: var(--s-5);
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  opacity: 0.7;
}

.scroll-hint svg {
  width: 18px;
  height: 18px;
  animation: hintBob 2s var(--ease-in-out) infinite;
}

@keyframes hintBob {
  0%, 100% { transform: translateY(0); opacity: 0.6; }
  50% { transform: translateY(7px); opacity: 1; }
}

/* ---------- 9. Marquee ---------- */
.marquee {
  position: relative;
  z-index: var(--z-base);
  overflow: hidden;
  padding: var(--s-4) 0;
  border-block: 1px solid color-mix(in srgb, var(--outline-variant) 48%, transparent);
  background: color-mix(in srgb, var(--surface-container-low) 72%, transparent);
  backdrop-filter: blur(8px);
  mask-image: linear-gradient(
    90deg,
    transparent,
    #000 8%,
    #000 92%,
    transparent
  );
}

.marquee__track {
  display: flex;
  align-items: center;
  gap: var(--s-6);
  width: max-content;
  animation: marquee 32s linear infinite;
}

.marquee:hover .marquee__track {
  animation-play-state: paused;
}

.marquee__track span {
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 1.6vw, 1.22rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--on-surface-variant);
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease-out);
}

.marquee__track span:hover { color: var(--primary); }

.marquee__track i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}

@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ---------- 10. Sections ---------- */
.section {
  position: relative;
  z-index: var(--z-base);
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(72px, 11vw, 136px) var(--gut);
}

.section--tight { padding-block: clamp(56px, 8vw, 96px); }

.section__head {
  max-width: 720px;
  margin-bottom: clamp(40px, 6vw, 68px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--s-4);
}

.eyebrow i {
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.section__desc {
  margin-top: var(--s-4);
  font-size: var(--fs-body);
  color: var(--on-surface-variant);
}

/* ---------- 11. Cards ---------- */
.card {
  position: relative;
  padding: clamp(24px, 3vw, 38px);
  border-radius: var(--r-xl);
  overflow: hidden;
  transition: transform var(--t-base) var(--ease-out),
    box-shadow var(--t-base) var(--ease-out),
    border-radius var(--t-base) var(--ease-spring),
    background-color var(--t-base) var(--ease-out);
}

.card--filled {
  background: var(--surface-container-lowest);
  box-shadow: 0 1px 2px var(--shadow), 0 12px 28px -18px var(--shadow);
}

[data-theme="dark"] .card--filled {
  background: var(--surface-container-low);
}

.card--tonal {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
  box-shadow: 0 12px 30px -20px
    color-mix(in srgb, var(--secondary) 80%, transparent);
}

.card--outline {
  background: transparent;
  border: 1.5px solid color-mix(in srgb, var(--outline-variant) 72%, transparent);
}

.card:hover {
  transform: translateY(-6px);
  border-radius: var(--r-2xl);
  box-shadow: 0 1px 2px var(--shadow), 0 28px 54px -26px var(--shadow);
}

.card--outline:hover {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 5%, transparent);
}

/* ---------- 12. Progress ---------- */
.progress-grid {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: var(--s-5);
  align-items: stretch;
}

.progress-card {
  grid-row: span 2;
  display: flex;
  flex-direction: column;
  gap: var(--s-6);
  align-items: center;
  text-align: center;
}

.ring-wrap {
  position: relative;
  width: clamp(180px, 22vw, 240px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.ring {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.ring__track,
.ring__value {
  fill: none;
  stroke-width: 13;
  stroke-linecap: round;
}

.ring__track {
  stroke: color-mix(in srgb, var(--outline-variant) 60%, transparent);
}

.ring__value {
  stroke: url(#ringGrad);
  stroke-dasharray: 540.35;
  stroke-dashoffset: 540.35;
  transition: stroke-dashoffset 1.8s var(--ease-out);
}

.ring-center {
  display: flex;
  align-items: baseline;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2px;
}

.ring-center strong {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5.4vw, 3.9rem);
  font-weight: 850;
  line-height: 1;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}

.ring-center > span {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
}

.ring-center em {
  flex-basis: 100%;
  margin-top: 6px;
  font-style: normal;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
}

.progress-card__body {
  width: 100%;
  max-width: 460px;
}

.progress-card__body h3 {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 750;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.progress-card__body > p {
  font-size: var(--fs-sm);
  color: var(--on-surface-variant);
  margin-bottom: var(--s-5);
}

.linear {
  height: 12px;
  border-radius: var(--r-full);
  background: color-mix(in srgb, var(--outline-variant) 55%, transparent);
  overflow: hidden;
}

.linear i {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: var(--r-full);
  background: linear-gradient(
    90deg,
    var(--primary),
    var(--tertiary) 60%,
    var(--secondary)
  );
  background-size: 200% 100%;
  animation: hueSlide 6s var(--ease-in-out) infinite;
  transition: width 1.8s var(--ease-out);
}

.phases {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--s-2);
  margin-top: var(--s-5);
}

.phase {
  padding: 5px 13px;
  border-radius: var(--r-full);
  font-size: var(--fs-xs);
  font-weight: 650;
  background: color-mix(in srgb, var(--on-surface) 8%, transparent);
  color: var(--on-surface-variant);
}

.phase--done {
  background: color-mix(in srgb, var(--secondary) 22%, transparent);
  color: color-mix(in srgb, var(--secondary) 92%, var(--on-surface));
}

.phase--now {
  background: var(--primary-container);
  color: var(--on-primary-container);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--primary) 40%, transparent);
  animation: nowPulse 2.6s var(--ease-in-out) infinite;
}

@keyframes nowPulse {
  0%, 100% { box-shadow: 0 0 0 1px color-mix(in srgb, var(--primary) 40%, transparent); }
  50% { box-shadow: 0 0 0 5px color-mix(in srgb, var(--primary) 10%, transparent); }
}

.stat-card {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-4);
  align-items: center;
  padding: clamp(24px, 3vw, 32px);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.stat__num {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.6vw, 2.9rem);
  font-weight: 850;
  line-height: 1;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}

.stat__label {
  font-size: var(--fs-xs);
  font-weight: 600;
  opacity: 0.72;
  letter-spacing: 0.02em;
}

.note-card__badge {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: var(--s-4);
  border-radius: var(--r-full);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  background: var(--primary-container);
  color: var(--on-primary-container);
}

.note-card h3 {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 750;
  letter-spacing: -0.02em;
  margin-bottom: var(--s-2);
}

.note-card > p {
  font-size: var(--fs-sm);
  color: var(--on-surface-variant);
  line-height: 1.7;
}

.ticks {
  margin-top: var(--s-4);
  display: grid;
  gap: 9px;
}

.ticks li {
  position: relative;
  padding-left: 28px;
  font-size: var(--fs-sm);
  color: var(--on-surface-variant);
}

.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--secondary) 26%, transparent);
}

.ticks li::after {
  content: "";
  position: absolute;
  left: 4.5px;
  top: 10.5px;
  width: 6px;
  height: 3px;
  border-left: 2px solid var(--secondary);
  border-bottom: 2px solid var(--secondary);
  transform: rotate(-45deg);
}

.ticks li.pending {
  opacity: 0.6;
}

.ticks li.pending::before {
  background: transparent;
  border: 1.5px dashed color-mix(in srgb, var(--outline) 70%, transparent);
}

.ticks li.pending::after {
  display: none;
}

/* ---------- 13. Feature grid ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: var(--s-5);
}

.feat {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  min-height: 268px;
  cursor: default;
}

.feat__ico {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 20px 20px 20px 8px;
  color: var(--on-surface);
  background: color-mix(in srgb, var(--ic) 20%, transparent);
  transition: border-radius var(--t-base) var(--ease-spring),
    transform var(--t-base) var(--ease-spring);
}

.feat__ico svg {
  width: 26px;
  height: 26px;
}

.feat:hover .feat__ico {
  border-radius: 50% 50% 50% 12px;
  transform: translateY(-3px) rotate(-8deg);
}

.feat h3 {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 750;
  letter-spacing: -0.02em;
  margin-top: var(--s-2);
}

.card--tonal.feat h3 { color: var(--on-secondary-container); }

.feat p {
  font-size: var(--fs-sm);
  line-height: 1.72;
  color: var(--on-surface-variant);
  flex: 1;
}

.card--tonal.feat p {
  color: color-mix(in srgb, var(--on-secondary-container) 78%, transparent);
}

.feat__tag {
  align-self: flex-start;
  margin-top: var(--s-2);
  padding: 5px 13px;
  border-radius: var(--r-full);
  font-size: var(--fs-xs);
  font-weight: 650;
  letter-spacing: 0.02em;
  color: var(--on-surface-variant);
  background: color-mix(in srgb, var(--on-surface) 9%, transparent);
}

.feat__tag--done {
  background: color-mix(in srgb, var(--secondary) 24%, transparent);
  color: color-mix(in srgb, var(--secondary) 88%, var(--on-surface));
}

.feat__tag--now {
  background: var(--primary-container);
  color: var(--on-primary-container);
}

/* ---------- 14. Platform grid ---------- */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: var(--s-4);
}

.plat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--s-2);
  padding: clamp(22px, 2.6vw, 30px);
  border-radius: var(--r-lg);
}

.plat__ico {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: var(--s-2);
  border-radius: 18px 18px 18px 7px;
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 16%, transparent);
  transition: border-radius var(--t-base) var(--ease-spring),
    transform var(--t-base) var(--ease-spring);
}

.plat__ico svg {
  width: 25px;
  height: 25px;
}

.plat:hover .plat__ico {
  border-radius: 50% 50% 50% 11px;
  transform: translateY(-3px) rotate(-8deg);
}

.plat h3 {
  font-family: var(--font-display);
  font-size: 1.16rem;
  font-weight: 780;
  letter-spacing: -0.02em;
}

.plat p {
  font-size: var(--fs-sm);
  color: var(--on-surface-variant);
}

.plat__state {
  margin-top: var(--s-3);
  padding: 5px 12px;
  border-radius: var(--r-full);
  font-size: var(--fs-xs);
  font-weight: 650;
  background: color-mix(in srgb, var(--on-surface) 9%, transparent);
  color: var(--on-surface-variant);
}

.plat__state--live {
  background: var(--primary-container);
  color: var(--on-primary-container);
}

/* ---------- 16. Timeline ---------- */
.timeline {
  position: relative;
  display: grid;
  gap: var(--s-5);
  padding-left: clamp(30px, 5vw, 56px);
}

.timeline::before {
  content: "";
  position: absolute;
  left: clamp(11px, 2.1vw, 21px);
  top: 12px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(
    to bottom,
    var(--secondary) 0%,
    var(--primary) 42%,
    var(--outline-variant) 62%,
    color-mix(in srgb, var(--outline-variant) 25%, transparent) 100%
  );
}

.tl {
  position: relative;
}

.tl__dot {
  position: absolute;
  left: calc(clamp(30px, 5vw, 56px) * -1 + clamp(5px, 1.1vw, 11px));
  top: 30px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--surface);
  border: 2.5px solid var(--outline-variant);
  transition: transform var(--t-base) var(--ease-spring),
    background-color var(--t-base) var(--ease-out);
}

.tl__dot--done {
  background: var(--secondary);
  border-color: var(--secondary);
}

.tl__dot--now {
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--primary) 55%, transparent);
  animation: nowRing 2.4s var(--ease-out) infinite;
}

@keyframes nowRing {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--primary) 50%, transparent); }
  70%, 100% { box-shadow: 0 0 0 14px transparent; }
}

.tl:hover .tl__dot { transform: scale(1.35); }

.tl__card {
  padding: clamp(20px, 2.6vw, 30px) clamp(22px, 3vw, 34px);
  border-radius: var(--r-lg);
}

.tl__card--now {
  border-color: transparent;
}

.tl__date {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--primary);
}

.tl__card h3 {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.7vw, 1.28rem);
  font-weight: 750;
  letter-spacing: -0.02em;
  margin-bottom: 5px;
}

.tl__card p {
  font-size: var(--fs-sm);
  color: var(--on-surface-variant);
}

.card--tonal.tl__card p {
  color: color-mix(in srgb, var(--on-secondary-container) 76%, transparent);
}

/* ---------- 17. Contact ---------- */
.section--contact {
  padding-bottom: clamp(72px, 10vw, 120px);
}

.contact-card {
  position: relative;
  border-radius: clamp(28px, 4.4vw, 56px);
  padding: clamp(34px, 6vw, 82px) clamp(26px, 5vw, 76px);
  overflow: hidden;
  isolation: isolate;
  color: var(--on-primary-container);
  background: linear-gradient(
    148deg,
    var(--primary-container) 0%,
    color-mix(in srgb, var(--tertiary-container) 74%, var(--primary-container)) 52%,
    var(--secondary-container) 100%
  );
  box-shadow: 0 30px 70px -32px
    color-mix(in srgb, var(--primary) 62%, transparent);
  transition: border-radius var(--t-slow) var(--ease-out);
}

.contact-card:hover { border-radius: clamp(38px, 5.6vw, 74px); }

.contact-card__glow {
  position: absolute;
  width: 640px;
  height: 640px;
  top: -46%;
  right: -18%;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    color-mix(in srgb, #fff 42%, transparent),
    transparent 66%
  );
  opacity: 0.4;
  filter: blur(20px);
  animation: glowFloat 14s var(--ease-in-out) infinite alternate;
  z-index: -1;
}

[data-theme="dark"] .contact-card__glow { opacity: 0.16; }

@keyframes glowFloat {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-9%, 12%) scale(1.2); }
}

.contact-card__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.contact-card .chip--solid {
  background: color-mix(in srgb, var(--on-primary-container) 14%, transparent);
  color: var(--on-primary-container);
}

.contact-card__title {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  font-weight: 850;
  line-height: 1.06;
  letter-spacing: -0.04em;
  margin: var(--s-5) 0 var(--s-4);
}

.contact-card__desc {
  font-size: clamp(0.95rem, 1.4vw, 1.1rem);
  line-height: 1.7;
  color: color-mix(in srgb, var(--on-primary-container) 80%, transparent);
  max-width: 34em;
}

.mailbox {
  margin-top: var(--s-6);
  padding: clamp(20px, 3vw, 32px);
  border-radius: var(--r-lg);
  background: color-mix(in srgb, var(--surface-container-lowest) 68%, transparent);
  backdrop-filter: blur(12px);
  border: 1.5px solid color-mix(in srgb, var(--on-primary-container) 16%, transparent);
}

[data-theme="dark"] .mailbox {
  background: color-mix(in srgb, var(--surface) 42%, transparent);
}

.mailbox__label {
  display: block;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--on-primary-container) 62%, transparent);
  margin-bottom: 8px;
}

.mailbox__addr {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: clamp(1.18rem, 3.2vw, 2.15rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  word-break: break-all;
  transition: color var(--t-fast) var(--ease-out);
}

.mailbox__addr svg {
  width: 0.62em;
  height: 0.62em;
  flex-shrink: 0;
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity var(--t-base) var(--ease-out),
    transform var(--t-base) var(--ease-spring);
}

.mailbox__addr:hover svg {
  opacity: 1;
  transform: translateX(0);
}

.mailbox__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  margin-top: var(--s-5);
}

.mailbox .btn--filled {
  background: var(--on-primary-container);
  color: var(--primary-container);
  box-shadow: 0 10px 24px -12px
    color-mix(in srgb, var(--on-primary-container) 80%, transparent);
}

.mailbox .btn--tonal {
  background: color-mix(in srgb, var(--on-primary-container) 15%, transparent);
  color: var(--on-primary-container);
}

.contact-card__foot {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3) var(--s-6);
  margin-top: var(--s-5);
  font-size: var(--fs-sm);
  color: color-mix(in srgb, var(--on-primary-container) 74%, transparent);
}

.contact-card__foot span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--on-primary-container) 45%, transparent);
  flex-shrink: 0;
}

.dot--ok {
  background: var(--secondary);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--secondary) 60%, transparent);
  animation: nowRing 2.4s var(--ease-out) infinite;
}

/* ---------- 18. Footer ---------- */
.footer {
  position: relative;
  z-index: var(--z-base);
  background: var(--surface-container-low);
  border-top: 1px solid color-mix(in srgb, var(--outline-variant) 48%, transparent);
  overflow: hidden;
}

.footer__shape {
  position: absolute;
  top: -50%;
  left: -10%;
  width: 70%;
  height: 130%;
  background: radial-gradient(
    ellipse at 50% 50%,
    color-mix(in srgb, var(--primary) 12%, transparent),
    transparent 68%
  );
  pointer-events: none;
}

.footer__inner {
  position: relative;
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(44px, 6vw, 76px) var(--gut);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-5);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--s-3);
}

.footer__brand strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.footer__brand p {
  font-size: var(--fs-xs);
  color: var(--on-surface-variant);
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2) var(--s-5);
}

.footer__links a {
  position: relative;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--on-surface-variant);
  transition: color var(--t-fast) var(--ease-out);
}

.footer__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 100%;
  height: 1.5px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--t-base) var(--ease-out);
}

.footer__links a:hover { color: var(--primary); }
.footer__links a:hover::after { transform: scaleX(1); transform-origin: left; }

.footer__copy {
  flex-basis: 100%;
  padding-top: var(--s-4);
  border-top: 1px solid color-mix(in srgb, var(--outline-variant) 40%, transparent);
  font-size: var(--fs-xs);
  color: color-mix(in srgb, var(--on-surface-variant) 80%, transparent);
}

.footer__copy .icp {
  color: color-mix(in srgb, var(--on-surface-variant) 92%, transparent);
  transition: color var(--t-fast) var(--ease-out);
}

.footer__copy .icp:hover { color: var(--primary); }

/* ---------- 19. Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  z-index: var(--z-toast);
  display: flex;
  align-items: center;
  gap: 10px;
  height: 50px;
  padding: 0 24px;
  border-radius: var(--r-full);
  background: var(--inverse-surface, #33291f);
  color: var(--inverse-on-surface, #f8eee7);
  font-size: var(--fs-sm);
  font-weight: 650;
  box-shadow: 0 18px 38px -16px rgba(0, 0, 0, 0.55);
  opacity: 0;
  transform: translate(-50%, 26px) scale(0.9);
  pointer-events: none;
  transition: opacity var(--t-base) var(--ease-out),
    transform var(--t-base) var(--ease-spring);
}

.toast svg {
  width: 18px;
  height: 18px;
  color: var(--inverse-primary, #7ee0b0);
}

.toast.is-on {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
}

/* ---------- 19. Reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 780ms var(--ease-out), transform 780ms var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

[data-reveal].is-in {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 20. Responsive ---------- */
@media (max-width: 1024px) {
  .progress-grid {
    grid-template-columns: 1fr;
  }
  .progress-card { grid-row: auto; }
  .stat-card { grid-template-columns: repeat(3, 1fr); }
  .orbit { opacity: 0.55; }
}

@media (max-width: 860px) {
  html { scroll-padding-top: 88px; }

  .nav { display: none; }

  .icon-btn__label { display: none; }
  .icon-btn { padding: 0 11px; }

  .topbar .btn--tonal span { display: none; }
  .topbar .btn--tonal { padding: 0 13px; }

  .hero { min-height: auto; padding-top: 124px; }

  .hero__art { opacity: 0.7; }
  .orbit { display: none; }

  .scroll-hint { display: none; }

  .stat-card { grid-template-columns: 1fr 1fr; }

  .progress-card { text-align: center; }
}

@media (max-width: 560px) {
  :root {
    --fs-display: clamp(3rem, 19vw, 5rem);
    --s-6: 26px;
    --s-7: 36px;
  }

  .hero__cta .btn {
    flex: 1 1 100%;
  }

  .hero__meta {
    gap: var(--s-4);
  }

  .meta__sep { display: none; }

  .stat-card { grid-template-columns: 1fr; gap: var(--s-4); }

  .platform-grid { grid-template-columns: repeat(2, 1fr); gap: var(--s-3); }
  .plat { padding: 20px 16px; }
  .plat__ico { width: 44px; height: 44px; border-radius: 15px 15px 15px 6px; }
  .plat h3 { font-size: 1.02rem; }
  .plat p { font-size: var(--fs-xs); }

  .card { padding: 24px 20px; }
  .feat { min-height: 0; }

  .mailbox__actions .btn {
    flex: 1 1 100%;
  }

  .contact-card__foot {
    flex-direction: column;
    gap: 10px;
  }

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

@media (max-width: 420px) {
  .brand__text { display: none; }
  .platform-grid { grid-template-columns: 1fr; }
}

/* ---------- 21. A11y / Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .boot { display: none; }
}

@media print {
  .topbar,
  .aurora,
  .grain,
  .cursor-ring,
  .cursor-glow,
  .scroll-progress,
  .boot,
  .scroll-hint {
    display: none !important;
  }

  body { background: #fff; color: #000; }
}