/* ════════════════════════════════════════════════════════════════════
   百分号科技 · hunderpercent.tech
   Design system — engineering aesthetic × editorial
   ════════════════════════════════════════════════════════════════════ */

/* ─── Reset ─── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: "Space Grotesk", "Noto Serif SC", system-ui, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  overflow-x: hidden;
  cursor: none;
  font-feature-settings: "ss01" on, "ss02" on;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; border: none; background: none; cursor: pointer; color: inherit; }
ul, ol { list-style: none; }

::selection {
  background: var(--color-accent);
  color: var(--color-bg);
}

/* ─── Design tokens ─── */
:root {
  /* Color */
  --color-bg: #0a0a0a;
  --color-bg-2: #111111;
  --color-bg-3: #181818;
  --color-line: rgba(255, 255, 255, 0.08);
  --color-line-strong: rgba(255, 255, 255, 0.16);

  --color-text: #f4f1ec;
  --color-text-muted: #8a8a85;
  --color-text-dim: #5a5a55;

  --color-accent: #ffb547;          /* 琥珀金 / Amber Gold — main accent */
  --color-accent-deep: #e8941c;
  --color-accent-soft: rgba(255, 181, 71, 0.12);

  --color-electric: #6ee7ff;        /* 电光蓝 / Electric — secondary accent */
  --color-warm: #ff7a3d;            /* 暖橙 / warm orange */

  /* Typography */
  --font-display: "Space Grotesk", "Noto Serif SC", system-ui, sans-serif;
  --font-serif-cn: "Noto Serif SC", "Songti SC", serif;
  --font-mono: "JetBrains Mono", "SF Mono", monospace;

  /* Spacing */
  --gutter: clamp(1.25rem, 3vw, 2.5rem);
  --section-y: clamp(6rem, 12vh, 10rem);

  /* Misc */
  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 24px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ─── Grain overlay (texture) ─── */
.grain-overlay {
  position: fixed;
  inset: 0;
  z-index: 9000;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.6 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* ─── Custom cursor ─── */
.cursor-dot,
.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9999;
  transform: translate3d(-50%, -50%, 0);
  transition: width 0.25s var(--ease), height 0.25s var(--ease), background 0.2s;
  mix-blend-mode: difference;
}

.cursor-dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

.cursor-ring {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 50%;
}

.cursor-ring.is-hover {
  width: 64px;
  height: 64px;
  background: var(--color-accent);
  border-color: var(--color-accent);
}

@media (hover: none) {
  .cursor-dot, .cursor-ring { display: none; }
  body { cursor: auto; }
}

/* ─── Scroll progress (top bar) ─── */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 100;
  background: var(--color-line);
}

.scroll-progress__fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-warm));
  transition: width 0.1s linear;
}

/* ════════════════════════════════════════════════════════════════════
   NAV
   ════════════════════════════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem var(--gutter);
  backdrop-filter: blur(12px);
  background: rgba(10, 10, 10, 0.6);
  border-bottom: 1px solid var(--color-line);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-mark {
  position: relative;
  width: 36px;
  height: 36px;
  display: inline-block;
}

.logo-mark__circle {
  position: absolute;
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--color-accent);
  border-radius: 50%;
}

.logo-mark__circle:nth-child(1) {
  top: 2px;
  left: 2px;
  animation: orbit-a 6s linear infinite;
}
.logo-mark__circle:nth-child(3) {
  bottom: 2px;
  right: 2px;
  animation: orbit-b 6s linear infinite;
}

.logo-mark__slash {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 32px;
  height: 1.5px;
  background: var(--color-accent);
  transform: translate(-50%, -50%) rotate(-55deg);
  transform-origin: center;
}

@keyframes orbit-a {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(14px, 0); }
}
@keyframes orbit-b {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-14px, 0); }
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-text__cn {
  font-family: var(--font-serif-cn);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.logo-text__en {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
  margin-top: 2px;
}

.nav__menu {
  display: flex;
  gap: 2.5rem;
  font-size: 0.9rem;
}

.nav__menu a {
  position: relative;
  padding: 0.5rem 0;
  color: var(--color-text-muted);
  transition: color 0.3s;
}

.nav__menu a:hover {
  color: var(--color-text);
}

.nav__menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width 0.4s var(--ease);
}

.nav__menu a:hover::after {
  width: 100%;
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  border: 1px solid var(--color-line-strong);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.3s var(--ease);
}

.nav__cta:hover {
  background: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
}

@media (max-width: 880px) {
  .nav__menu { display: none; }
}

/* ════════════════════════════════════════════════════════════════════
   HERO
   ════════════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 7rem var(--gutter) 4rem;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--color-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-line) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at 50% 50%, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 50%, black 30%, transparent 75%);
  opacity: 0.5;
}

/* The big % installation */
.hero__installation {
  position: absolute;
  right: -5vw;
  top: 50%;
  transform: translateY(-50%);
  width: 60vw;
  max-width: 720px;
  aspect-ratio: 1;
  pointer-events: none;
  z-index: 1;
}

.percent-orb {
  position: absolute;
  border: 1.5px solid var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-accent);
}

.percent-orb--1 {
  width: 32%;
  height: 32%;
  top: 12%;
  left: 12%;
  animation: float-1 8s ease-in-out infinite;
}

.percent-orb--2 {
  width: 28%;
  height: 28%;
  bottom: 8%;
  right: 10%;
  animation: float-2 10s ease-in-out infinite;
}

.percent-orb__num {
  font-size: clamp(1.2rem, 1.5vw, 2rem);
}

.percent-orb--2 .percent-orb__num {
  font-size: clamp(1.5rem, 2vw, 2.5rem);
}

.percent-slash {
  position: absolute;
  top: 8%;
  left: 60%;
  width: 90%;
  height: 6px;
  background: var(--color-accent);
  transform: rotate(-58deg);
  transform-origin: left center;
  box-shadow: 0 0 60px rgba(255, 181, 71, 0.4);
}

.percent-orbit {
  position: absolute;
  inset: 0;
  border: 1px dashed var(--color-line-strong);
  border-radius: 50%;
  animation: spin 60s linear infinite;
}

.percent-orbit__dot {
  position: absolute;
  top: -4px;
  left: 50%;
  width: 8px;
  height: 8px;
  background: var(--color-electric);
  border-radius: 50%;
  transform: translateX(-50%);
  box-shadow: 0 0 12px var(--color-electric);
}

@keyframes float-1 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(8px, -12px); }
}
@keyframes float-2 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-10px, 8px); }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 920px;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  margin-bottom: 2rem;
}

.hero__eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 12px var(--color-accent);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.7); }
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3rem, 9vw, 7.5rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 1.75rem;
}

.hero__title .line {
  display: block;
  overflow: hidden;
}

.hero__title em {
  font-style: normal;
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-weight: 700;
  display: inline-block;
  letter-spacing: -0.04em;
}

.hero__title .sign {
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-weight: 700;
  display: inline-block;
  margin-left: 0.1em;
  font-size: 0.85em;
  vertical-align: 0.18em;
}

.line--accent {
  display: flex;
  align-items: baseline;
  gap: 0.05em;
}

.hero__sub {
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  color: var(--color-text-muted);
  max-width: 580px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero__sub strong {
  color: var(--color-text);
  font-weight: 500;
}

.hero__actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-bottom: 4rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.95rem 1.6rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.3s var(--ease);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg);
}

.btn--primary:hover {
  background: var(--color-accent-deep);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(255, 181, 71, 0.25);
}

.btn--primary .btn__arrow {
  transition: transform 0.3s var(--ease);
}
.btn--primary:hover .btn__arrow {
  transform: translateX(4px);
}

.btn--ghost {
  border: 1px solid var(--color-line-strong);
  color: var(--color-text);
}

.btn--ghost:hover {
  border-color: var(--color-text);
  background: rgba(255, 255, 255, 0.04);
}

/* Live stats */
.hero__stats {
  display: flex;
  gap: clamp(2rem, 5vw, 4rem);
  flex-wrap: wrap;
  padding-top: 2rem;
  border-top: 1px solid var(--color-line);
}

.hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.stat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 2.6vw, 2.5rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
}

.stat__num em {
  font-style: normal;
  font-size: 0.7em;
  color: var(--color-text-muted);
  margin-left: 2px;
}

.stat__sign {
  display: none; /* shown inline in markup but visually replaced by the digit */
}

.stat__label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

/* Side rail */
.hero__rail {
  position: absolute;
  right: var(--gutter);
  top: 50%;
  transform: translateY(-50%) rotate(90deg);
  transform-origin: right center;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  z-index: 2;
}

.hero__rail .rail__line {
  display: none;
}

@media (max-width: 1100px) {
  .hero__rail { display: none; }
  .hero__installation { opacity: 0.35; }
}

@media (max-width: 720px) {
  .hero { padding: 6rem 1.25rem 3rem; }
  .hero__installation { display: none; }
}

/* ════════════════════════════════════════════════════════════════════
   MARQUEE
   ════════════════════════════════════════════════════════════════════ */
.marquee {
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  padding: 1.5rem 0;
  overflow: hidden;
  background: var(--color-bg-2);
}

.marquee__track {
  display: flex;
  gap: 2rem;
  white-space: nowrap;
  animation: marquee 30s linear infinite;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.4vw, 2.4rem);
  font-weight: 500;
  letter-spacing: -0.02em;
}

.marquee__track .sep {
  color: var(--color-accent);
  font-size: 0.6em;
  align-self: center;
}

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

/* ════════════════════════════════════════════════════════════════════
   SECTION HEAD (shared)
   ════════════════════════════════════════════════════════════════════ */
.section-head {
  padding: 0 var(--gutter);
  margin-bottom: 4rem;
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
}

.section-head__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.section-head__num::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--color-accent);
}

.section-head__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.section-head__title span {
  display: block;
  color: var(--color-text);
}

.section-head__title em {
  display: block;
  font-style: italic;
  color: var(--color-accent);
  font-family: var(--font-serif-cn);
  font-weight: 900;
}

.section-head__desc {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 560px;
  line-height: 1.7;
}

.section-head--split {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: end;
}

@media (max-width: 720px) {
  .section-head--split {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ════════════════════════════════════════════════════════════════════
   WORK
   ════════════════════════════════════════════════════════════════════ */
.work {
  padding: var(--section-y) 0;
}

.work__grid {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1.5rem;
}

.work-card {
  position: relative;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-2);
  transition: all 0.5s var(--ease);
  grid-column: span 3;
  will-change: transform;
}

.work-card--lg {
  grid-column: span 4;
}

.work-card--wide {
  grid-column: span 6;
}

.work-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-6px);
}

.work-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.work-card--wide .work-card__media {
  aspect-ratio: 16 / 7;
}

.work-card__media--a {
  background: linear-gradient(135deg, #1a1410 0%, #2a1810 50%, #1a1410 100%);
}
.work-card__media--b {
  background: linear-gradient(135deg, #0f1a1a 0%, #1a2a2a 100%);
}
.work-card__media--c {
  background: linear-gradient(135deg, #1a0f1a 0%, #2a0f1a 100%);
}
.work-card__media--d {
  background: linear-gradient(135deg, #101a10 0%, #1a2a1a 100%);
}

.work-card__shape {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.6s var(--ease);
}

.work-card:hover .work-card__shape {
  transform: scale(1.08) rotate(8deg);
}

.work-card__shape--a::after {
  content: "%";
  font-family: var(--font-mono);
  font-size: clamp(8rem, 18vw, 16rem);
  font-weight: 700;
  color: var(--color-accent);
  opacity: 0.85;
  line-height: 1;
}

.work-card__shape--b::after {
  content: "";
  width: 55%;
  aspect-ratio: 1;
  border: 2px solid var(--color-electric);
  border-radius: 50%;
  position: relative;
}
.work-card__shape--b::before {
  content: "";
  position: absolute;
  width: 30%;
  aspect-ratio: 1;
  background: var(--color-electric);
  border-radius: 50%;
  z-index: 1;
  box-shadow: 0 0 60px var(--color-electric);
}

.work-card__shape--c::after {
  content: "↗";
  font-size: clamp(8rem, 18vw, 16rem);
  color: var(--color-warm);
  font-weight: 700;
}

.work-card__shape--d {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 6px;
  padding: 10%;
}
.work-card__shape--d::before,
.work-card__shape--d::after {
  content: "";
}
.work-card__shape--d {
  background-image:
    linear-gradient(to right, var(--color-line-strong) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-line-strong) 1px, transparent 1px);
  background-size: 14% 25%;
  background-color: transparent;
}
.work-card__shape--d::after {
  content: "";
  position: absolute;
  width: 80%;
  height: 60%;
  top: 20%;
  left: 10%;
  background: linear-gradient(135deg, transparent, var(--color-accent));
  opacity: 0.25;
  border-radius: var(--radius-md);
}

.work-card__chip {
  position: absolute;
  top: 1.2rem;
  left: 1.2rem;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  padding: 0.4rem 0.7rem;
  background: rgba(10, 10, 10, 0.7);
  backdrop-filter: blur(8px);
  border: 1px solid var(--color-line-strong);
  border-radius: 999px;
}

.work-card__index {
  position: absolute;
  bottom: 1.2rem;
  right: 1.2rem;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-text);
  opacity: 0.15;
  line-height: 1;
}

.work-card__meta {
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.work-card__meta h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.work-card__meta p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.work-card__tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.work-card__tags li {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  color: var(--color-text-muted);
}

@media (max-width: 960px) {
  .work__grid { grid-template-columns: repeat(2, 1fr); }
  .work-card,
  .work-card--lg,
  .work-card--wide {
    grid-column: span 2;
  }
}

/* ════════════════════════════════════════════════════════════════════
   SERVICES
   ════════════════════════════════════════════════════════════════════ */
.services {
  padding: var(--section-y) 0;
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.service-list {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.service {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: clamp(1.5rem, 4vw, 4rem);
  padding: 2.5rem 1rem;
  border-top: 1px solid var(--color-line);
  position: relative;
  transition: all 0.4s var(--ease);
}

.service:last-child {
  border-bottom: 1px solid var(--color-line);
}

.service:hover {
  padding-left: 2rem;
  background: linear-gradient(90deg, var(--color-accent-soft), transparent 60%);
}

.service__num {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--color-text-dim);
  letter-spacing: 0.1em;
  transition: color 0.3s;
}

.service:hover .service__num {
  color: var(--color-accent);
}

.service__body h3 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.6vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 0.6rem;
}

.service__body p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  max-width: 540px;
  line-height: 1.6;
}

.service__tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.service__tags span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--color-line-strong);
  border-radius: 999px;
  color: var(--color-text-muted);
}

.service__arrow {
  font-size: 1.6rem;
  color: var(--color-text-dim);
  transition: all 0.3s var(--ease);
}

.service:hover .service__arrow {
  color: var(--color-accent);
  transform: translate(4px, -4px);
}

@media (max-width: 880px) {
  .service {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 2rem 0.5rem;
  }
  .service:hover {
    padding-left: 1rem;
  }
}

/* ════════════════════════════════════════════════════════════════════
   PROCESS / TIMELINE
   ════════════════════════════════════════════════════════════════════ */
.process {
  padding: var(--section-y) 0;
}

.timeline {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--color-line-strong) 10%, var(--color-line-strong) 90%, transparent);
  transform: translateX(-50%);
}

.step {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2rem;
  padding: 2rem 0;
  position: relative;
}

.step:nth-child(odd) .step__body {
  grid-column: 1;
  text-align: right;
}
.step:nth-child(odd) .step__percent {
  grid-column: 2;
}
.step:nth-child(even) .step__body {
  grid-column: 3;
}
.step:nth-child(even) .step__percent {
  grid-column: 2;
  grid-row: 1;
}

.step__percent {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 2.4vw, 2.2rem);
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: baseline;
  gap: 2px;
  position: relative;
  z-index: 1;
  background: var(--color-bg);
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--color-line-strong);
  border-radius: 999px;
}

.step__percent span {
  color: var(--color-accent);
  font-size: 0.85em;
}

.step--final .step__percent {
  background: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
}

.step--final .step__percent span {
  color: var(--color-bg);
}

.step__body {
  max-width: 380px;
}

.step__body h4 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.step__body p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

@media (max-width: 720px) {
  .timeline::before { left: 2rem; }
  .step {
    grid-template-columns: auto 1fr;
    gap: 1rem;
  }
  .step:nth-child(odd) .step__body,
  .step:nth-child(even) .step__body {
    grid-column: 2;
    text-align: left;
  }
  .step:nth-child(odd) .step__percent,
  .step:nth-child(even) .step__percent {
    grid-column: 1;
    grid-row: 1;
  }
}

/* ════════════════════════════════════════════════════════════════════
   MANIFESTO
   ════════════════════════════════════════════════════════════════════ */
.manifesto {
  padding: var(--section-y) 0;
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  position: relative;
  overflow: hidden;
}

.manifesto__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--gutter);
  text-align: center;
  position: relative;
}

.manifesto__mark {
  position: absolute;
  top: -2rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: clamp(8rem, 22vw, 22rem);
  font-weight: 700;
  color: var(--color-accent);
  opacity: 0.08;
  line-height: 1;
  user-select: none;
  pointer-events: none;
}

.manifesto__text {
  font-family: var(--font-serif-cn);
  font-weight: 500;
  font-size: clamp(1.6rem, 3.4vw, 3rem);
  line-height: 1.4;
  color: var(--color-text);
  position: relative;
  z-index: 1;
  letter-spacing: 0.01em;
}

.manifesto__text .hl {
  color: var(--color-accent);
  font-style: italic;
}

.manifesto__sig {
  margin-top: 2.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-muted);
  letter-spacing: 0.15em;
  position: relative;
  z-index: 1;
}

/* ════════════════════════════════════════════════════════════════════
   CONTACT
   ════════════════════════════════════════════════════════════════════ */
.contact {
  padding: var(--section-y) 0;
}

.contact__grid {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.contact-card {
  position: relative;
  padding: 2rem 1.8rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-bg-2);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-height: 200px;
  transition: all 0.4s var(--ease);
  overflow: hidden;
}

.contact-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 100% 100%, var(--color-accent-soft), transparent 60%);
  opacity: 0;
  transition: opacity 0.4s;
}

.contact-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
}

.contact-card:hover::before {
  opacity: 1;
}

.contact-card__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  position: relative;
}

.contact-card__value {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-text);
  word-break: break-all;
  position: relative;
  margin-top: auto;
}

.contact-card__arrow {
  position: absolute;
  top: 1.8rem;
  right: 1.8rem;
  font-size: 1.3rem;
  color: var(--color-text-dim);
  transition: all 0.3s var(--ease);
}

.contact-card:hover .contact-card__arrow {
  color: var(--color-accent);
  transform: translate(4px, -4px);
}

.contact-card--cta {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.contact-card--cta .contact-card__label,
.contact-card--cta .contact-card__arrow {
  color: rgba(10, 10, 10, 0.7);
}

.contact-card--cta .contact-card__value {
  color: var(--color-bg);
  font-size: 1.4rem;
  font-weight: 600;
}

.contact-card--cta:hover {
  background: var(--color-accent-deep);
  border-color: var(--color-accent-deep);
}

@media (max-width: 880px) {
  .contact__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .contact__grid { grid-template-columns: 1fr; }
}

/* ════════════════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════════════════ */
.footer {
  position: relative;
  border-top: 1px solid var(--color-line);
  background: var(--color-bg);
  padding-top: 4rem;
}

.footer__back {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  background: var(--color-bg);
  padding: 0.8rem 1.4rem;
  border: 1px solid var(--color-line-strong);
  border-radius: 999px;
  transition: all 0.3s var(--ease);
  z-index: 2;
}

.footer__back:hover {
  background: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
}

.footer__back-num {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.footer__back:hover .footer__back-num {
  color: var(--color-bg);
}

.footer__back-sign {
  position: absolute;
  top: 0.4rem;
  right: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-accent);
}

.footer__back:hover .footer__back-sign {
  color: var(--color-bg);
}

.footer__back-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
}

.footer__back:hover .footer__back-label {
  color: var(--color-bg);
}

.footer__main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--gutter) 3rem;
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 4rem;
}

.footer__brand .logo-mark {
  width: 48px;
  height: 48px;
  margin-bottom: 1.5rem;
}

.footer__brand p {
  font-family: var(--font-serif-cn);
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 280px;
}

.footer__cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer__cols h5 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-text-dim);
  margin-bottom: 1.2rem;
  text-transform: uppercase;
}

.footer__cols a {
  display: block;
  font-size: 0.9rem;
  color: var(--color-text);
  padding: 0.4rem 0;
  transition: color 0.2s;
}

.footer__cols a:hover {
  color: var(--color-accent);
}

.footer__bottom {
  border-top: 1px solid var(--color-line);
  padding: 1.5rem var(--gutter);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-align: center;
  color: var(--color-text-muted);
  max-width: 1400px;
  margin: 0 auto;
}

.footer__bottom em {
  color: var(--color-accent);
  font-style: normal;
}

@media (max-width: 720px) {
  .footer__main {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .footer__cols { grid-template-columns: repeat(2, 1fr); }
  .footer__bottom {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

/* ════════════════════════════════════════════════════════════════════
   Reveal animation
   ════════════════════════════════════════════════════════════════════ */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}