/* =========================================================
   奥瑞奥 Orio · Apple-inspired Style
   ========================================================= */

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

:root {
  /* Brand */
  --accent: #D71920;          /* refined red */
  --accent-2: #FF3B47;
  --accent-dark: #8C0E14;
  --accent-grad: linear-gradient(135deg, #FF3B47 0%, #C8102E 100%);

  /* Neutral */
  --bg: #FBFBFD;              /* Apple off-white */
  --bg-gray: #F5F5F7;
  --bg-dark: #0A0A0A;
  --bg-darker: #000000;
  --ink: #1D1D1F;
  --ink-2: #424245;
  --ink-3: #6E6E73;
  --ink-light: #86868B;
  --line: rgba(0, 0, 0, 0.08);
  --line-light: rgba(255, 255, 255, 0.12);

  /* Type */
  --font-cn: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "SF Pro SC", "PingFang SC", "Helvetica Neue", sans-serif;
  --font-en: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container: 1280px;
  --gutter: clamp(20px, 4vw, 56px);
  --radius: 18px;
  --radius-lg: 28px;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scrollbar-color: rgba(0,0,0,.2) transparent;
}

body {
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "cv11";
}

body.no-scroll { overflow: hidden; }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }

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

/* ---------- Custom Cursor ---------- */
.cursor {
  position: fixed;
  top: 0; left: 0;
  width: 8px; height: 8px;
  pointer-events: none;
  z-index: 9999;
  mix-blend-mode: difference;
  display: none;
}
@media (hover: hover) and (pointer: fine) {
  .cursor { display: block; }
}
.cursor__dot, .cursor__ring {
  position: absolute;
  top: 50%; left: 50%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width .25s var(--ease), height .25s var(--ease), opacity .2s var(--ease);
}
.cursor__dot {
  width: 6px; height: 6px;
  background: #fff;
}
.cursor__ring {
  width: 32px; height: 32px;
  border: 1px solid #fff;
  transition: width .35s var(--ease), height .35s var(--ease), transform .15s var(--ease);
}
.cursor.hover .cursor__ring { width: 60px; height: 60px; }
.cursor.hover .cursor__dot { opacity: 0; }
@media (hover: none) {
  .cursor { display: none; }
}

/* ---------- Loader ---------- */
.loader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity .8s var(--ease), visibility .8s;
}
.loader.hidden {
  opacity: 0;
  visibility: hidden;
}
.loader__inner { text-align: center; }
.loader__mark {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: clamp(28px, 4vw, 42px);
  letter-spacing: 0.2em;
  color: #fff;
  margin-bottom: 30px;
}
.loader__mark[src] {
  /* 用作 <img> 时的高度/动效 */
  width: clamp(96px, 14vw, 140px);
  height: auto;
  display: block;
  margin: 0 auto 30px;
  filter: drop-shadow(0 6px 24px rgba(215, 25, 32, .35));
  animation: loaderPulse 1.6s var(--ease) infinite alternate;
}
@keyframes loaderPulse {
  0%   { opacity: .85; transform: scale(.98); }
  100% { opacity: 1;   transform: scale(1.02); }
}
.loader__bar {
  width: 180px;
  height: 2px;
  background: rgba(255,255,255,.12);
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}
.loader__bar span {
  position: absolute;
  inset: 0;
  background: var(--accent-grad);
  transform-origin: left;
  animation: load 1.6s var(--ease) forwards;
}
@keyframes load {
  0% { transform: scaleX(0); }
  100% { transform: scaleX(1); }
}

/* ---------- Container ---------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 14px 0;
  transition: all .4s var(--ease);
}
.nav__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  height: 52px;
  transition: all .4s var(--ease);
}
.nav.scrolled {
  background: rgba(251, 251, 253, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
  padding: 8px 0;
}
.nav.scrolled .nav__inner {
  height: 48px;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.nav__logo-img {
  /* 原 logo 比例 704:827 ≈ 0.85:1（高比宽） */
  height: 38px;
  width: auto;
  display: block;
  transition: transform .4s var(--ease), filter .3s;
}
.nav__logo:hover .nav__logo-img { transform: translateY(-1px); }
.nav.scrolled .nav__logo-img { filter: none; }
/* 浮在 hero 上时（透明态）给 logo 加柔和发光，红色更跳出 */
.nav:not(.scrolled) .nav__logo-img {
  filter: drop-shadow(0 2px 12px rgba(0, 0, 0, .35));
}
.nav__logo-cn {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  transition: color .3s;
  letter-spacing: 0.02em;
}
.nav__logo-en {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,.6);
  transition: color .3s;
}
.nav.scrolled .nav__logo-cn { color: var(--ink); }
.nav.scrolled .nav__logo-en { color: var(--ink-3); }

.nav__menu {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav__link {
  font-size: 14px;
  font-weight: 400;
  color: rgba(255,255,255,.85);
  position: relative;
  padding: 6px 0;
  transition: color .3s;
}
.nav__link::after {
  content: "";
  position: absolute;
  bottom: 0; left: 50%;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: all .3s var(--ease);
}
.nav__link:hover::after { width: 100%; left: 0; }
.nav__link:hover { color: #fff; }
.nav.scrolled .nav__link { color: var(--ink-2); }
.nav.scrolled .nav__link:hover { color: var(--ink); }

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--accent);
  color: #fff;
  border-radius: 980px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: all .35s var(--ease);
  box-shadow: 0 4px 16px rgba(215,25,32,.25);
}
.nav__cta:hover {
  background: #fff;
  color: var(--ink);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0,0,0,.15);
}
.nav__cta svg { transition: transform .3s; }
.nav__cta:hover svg { transform: translate(2px, -2px); }

.nav__burger {
  display: none;
  width: 40px; height: 40px;
  position: relative;
}
.nav__burger span {
  position: absolute;
  left: 50%;
  width: 22px; height: 1.5px;
  background: #fff;
  transition: all .3s;
  transform: translateX(-50%);
}
.nav__burger span:nth-child(1) { top: 16px; }
.nav__burger span:nth-child(2) { bottom: 16px; }
.nav.scrolled .nav__burger span { background: var(--ink); }
.nav__burger.active span:nth-child(1) {
  top: 50%;
  transform: translate(-50%, -50%) rotate(45deg);
}
.nav__burger.active span:nth-child(2) {
  bottom: 50%;
  transform: translate(-50%, 50%) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(0,0,0,.96);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  opacity: 0;
  visibility: hidden;
  transition: all .4s var(--ease);
  padding: 80px 24px;
}
.mobile-menu.open { opacity: 1; visibility: visible; }
.mobile-menu__link {
  font-size: 28px;
  font-weight: 600;
  color: #fff;
  letter-spacing: -0.01em;
  opacity: 0;
  transform: translateY(20px);
  transition: all .5s var(--ease);
}
.mobile-menu.open .mobile-menu__link { opacity: 1; transform: translateY(0); }
.mobile-menu.open .mobile-menu__link:nth-child(1) { transition-delay: .1s; }
.mobile-menu.open .mobile-menu__link:nth-child(2) { transition-delay: .15s; }
.mobile-menu.open .mobile-menu__link:nth-child(3) { transition-delay: .2s; }
.mobile-menu.open .mobile-menu__link:nth-child(4) { transition-delay: .25s; }
.mobile-menu.open .mobile-menu__link:nth-child(5) { transition-delay: .3s; }
.mobile-menu__cta {
  margin-top: 20px;
  padding: 14px 32px;
  background: var(--accent);
  color: #fff;
  border-radius: 980px;
  font-size: 15px;
  font-weight: 500;
  opacity: 0;
  transform: translateY(20px);
  transition: all .5s var(--ease) .35s;
}
.mobile-menu.open .mobile-menu__cta { opacity: 1; transform: translateY(0); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 980px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: all .35s var(--ease);
  white-space: nowrap;
  cursor: pointer;
}
.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 24px rgba(215,25,32,.3);
}
.btn--primary:hover {
  background: #000;
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(0,0,0,.25);
}
.btn--ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,.3);
}
.btn--ghost:hover {
  background: #fff;
  color: var(--ink);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn--ghost-light {
  color: #fff;
  border-color: rgba(255,255,255,.25);
}
.btn--white {
  background: #fff;
  color: var(--ink);
}
.btn--white:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}
.btn--lg {
  padding: 18px 40px;
  font-size: 16px;
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}
.hero__media {
  position: absolute;
  inset: -10% 0;
  z-index: -1;
  background-image: url("https://images.unsplash.com/photo-1567521464027-f127ff144326?auto=format&fit=crop&w=2400&q=80");
  background-size: cover;
  background-position: center;
  transform: translateZ(0);
  will-change: transform;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, rgba(0,0,0,.3) 0%, rgba(0,0,0,.7) 100%),
    linear-gradient(180deg, rgba(140,14,20,.4) 0%, rgba(0,0,0,.6) 100%);
}
.hero__noise {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .3 0'/></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");
  opacity: 0.4;
  mix-blend-mode: overlay;
}
.hero::after {
  content: "";
  position: absolute;
  top: 0; left: 50%;
  width: 1px; height: 100%;
  background: linear-gradient(180deg, rgba(255,255,255,.1), transparent 30%);
  pointer-events: none;
}
.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 1100px;
  padding: 0 var(--gutter);
  margin: 60px auto 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-bottom: 100px; /* 给「向下滚动」提示留位置，避免按钮贴太近 */
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,.85);
  margin-bottom: 32px;
  padding: 8px 18px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 980px;
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,.05);
}
.hero__eyebrow-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 12px var(--accent-2);
  animation: pulse 2s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.6; }
}

.hero__title {
  font-size: clamp(48px, 9vw, 140px);
  line-height: 0.98;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.hero__title span {
  display: block;
  background: linear-gradient(180deg, #fff 0%, rgba(255,255,255,.7) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero__title-accent {
  background: linear-gradient(135deg, #fff 0%, #FF8A95 50%, var(--accent-2) 100%) !important;
  -webkit-background-clip: text !important;
  background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
}

.hero__sub {
  font-size: clamp(15px, 1.4vw, 19px);
  line-height: 1.7;
  color: rgba(255,255,255,.8);
  max-width: 640px;
  margin: 0 auto 48px;
  font-weight: 300;
}

.hero__cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,.5);
  text-transform: uppercase;
  z-index: 2;
}
.hero__scroll-line {
  width: 1px; height: 50px;
  background: linear-gradient(180deg, rgba(255,255,255,.6), transparent);
  position: relative;
  overflow: hidden;
}
.hero__scroll-line::after {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 30%;
  background: #fff;
  animation: scroll-down 2s var(--ease) infinite;
}
@keyframes scroll-down {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(300%); }
}

.hero__marquee {
  position: relative;
  width: 100%;
  flex-shrink: 0;
  overflow: hidden;
  border-top: 1px solid rgba(255,255,255,.1);
  background: rgba(0,0,0,.3);
  backdrop-filter: blur(20px);
  padding: 20px 0;
  z-index: 2;
}
.hero__marquee-track {
  display: inline-flex;
  align-items: center;
  gap: 40px;
  white-space: nowrap;
  animation: marquee 30s linear infinite;
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,.6);
}
.hero__marquee-track span:nth-child(odd) {
  color: rgba(255,255,255,.4);
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* =========================================================
   STATS
   ========================================================= */
.stats {
  background: #000;
  color: #fff;
  padding: 80px 0;
  border-top: 1px solid rgba(255,255,255,.06);
  position: relative;
  overflow: hidden;
}
.stats::before {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(215,25,32,.15) 0%, transparent 50%);
  transform: translate(-50%, -50%);
  filter: blur(60px);
  pointer-events: none;
}
.stats__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}
.stat {
  text-align: center;
  padding: 20px;
  position: relative;
}
.stat:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0; top: 50%;
  transform: translateY(-50%);
  width: 1px; height: 40px;
  background: linear-gradient(180deg, transparent, rgba(255,255,255,.2), transparent);
}
.stat__num {
  font-family: var(--font-en);
  font-size: clamp(48px, 6vw, 80px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  background: linear-gradient(180deg, #fff 0%, rgba(255,255,255,.5) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}
.stat__suffix {
  display: inline-block;
  font-family: var(--font-en);
  font-size: clamp(24px, 3vw, 40px);
  font-weight: 600;
  color: var(--accent-2);
  margin-left: 4px;
  vertical-align: top;
  line-height: 1.4;
}
.stat__label {
  margin-top: 12px;
  font-size: 14px;
  color: rgba(255,255,255,.5);
  letter-spacing: 0.05em;
}

/* =========================================================
   SECTION (generic)
   ========================================================= */
.section {
  padding: clamp(80px, 12vw, 160px) 0;
  position: relative;
}
.section--light { background: var(--bg); }
.section--dark {
  background: #000;
  color: #fff;
}
.section--gray {
  background: var(--bg-gray);
}

.section__head {
  margin-bottom: 80px;
  max-width: 820px;
}
.section__head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--ink-3);
  margin-bottom: 20px;
  text-transform: uppercase;
}
.section__eyebrow--light { color: rgba(255,255,255,.5); }
.section__eyebrow-line {
  width: 30px; height: 1px;
  background: var(--accent);
  display: inline-block;
}

.section__title {
  font-size: clamp(36px, 5.5vw, 72px);
  line-height: 1.05;
  font-weight: 700;
  letter-spacing: -0.035em;
  color: var(--ink);
  margin-bottom: 24px;
}
.section__title--light { color: #fff; }
.section__desc {
  font-size: clamp(15px, 1.3vw, 19px);
  line-height: 1.7;
  color: var(--ink-3);
  max-width: 640px;
  font-weight: 300;
}
.section--center .section__desc,
.section__head--center .section__desc {
  margin-left: auto;
  margin-right: auto;
}

.section__more {
  text-align: center;
  margin-top: 64px;
}

.text-accent {
  background: linear-gradient(135deg, var(--accent-2) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-style: italic;
  font-weight: 800;
}

/* =========================================================
   PRODUCTS (Bento)
   ========================================================= */
.products {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 16px;
}
.product-card {
  position: relative;
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.04);
  transition: transform .6s var(--ease), box-shadow .6s var(--ease);
  display: flex;
  flex-direction: column;
  will-change: transform;
}
.product-card:hover {
  box-shadow: 0 20px 60px rgba(0,0,0,.12);
}
.product-card--lg {
  grid-row: span 2;
}
.product-card--lg .product-card__media {
  aspect-ratio: 4/3;
}
.product-card__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
  background: var(--bg-gray);
}
.product-card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--ease);
}
.product-card:hover .product-card__media img {
  transform: scale(1.06);
}
.product-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,.3) 100%);
  opacity: 0;
  transition: opacity .4s;
}
.product-card:hover .product-card__media::after { opacity: 1; }

.product-card__body {
  padding: 32px 32px 36px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.product-card__tag {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--accent);
  margin-bottom: 14px;
}
.product-card__title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  color: var(--ink);
}
.product-card--lg .product-card__title { font-size: 32px; }
.product-card__desc {
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink-3);
  flex: 1;
  font-weight: 300;
}
.product-card__more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 24px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: gap .3s var(--ease);
}
.product-card__more:hover { gap: 12px; }
.product-card__more svg { transition: transform .3s; }
.product-card__more:hover svg { transform: translate(2px, -2px); }

/* =========================================================
   QUOTE
   ========================================================= */
.quote {
  padding: clamp(100px, 14vw, 180px) 0;
  background: var(--bg);
  text-align: center;
  position: relative;
}
.quote__inner {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}
.quote__mark {
  font-family: var(--font-en);
  font-size: 200px;
  line-height: 0.5;
  color: var(--accent);
  opacity: 0.15;
  position: absolute;
  top: -30px;
  left: -20px;
  pointer-events: none;
  font-weight: 700;
}
.quote__text {
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.3;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 32px;
  position: relative;
}
.quote__author {
  font-size: 14px;
  color: var(--ink-3);
  letter-spacing: 0.05em;
}

/* =========================================================
   ADVANTAGES
   ========================================================= */
.advantages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}
.advantage {
  position: relative;
  padding: 56px 36px;
  border-right: 1px solid var(--line-light);
  transition: background .5s var(--ease);
}
.advantage:last-child { border-right: none; }
.advantage:hover {
  background: linear-gradient(180deg, rgba(215,25,32,.05) 0%, transparent 100%);
}
.advantage__icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: var(--accent-grad);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  margin-bottom: 28px;
  transition: transform .5s var(--ease);
}
.advantage:hover .advantage__icon {
  transform: scale(1.08) rotate(-5deg);
}
.advantage__title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  color: #fff;
}
.advantage__desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,.55);
  font-weight: 300;
}
.advantage__num {
  position: absolute;
  top: 56px;
  right: 36px;
  font-family: var(--font-en);
  font-size: 80px;
  font-weight: 700;
  line-height: 1;
  color: rgba(255,255,255,.04);
  letter-spacing: -0.05em;
  pointer-events: none;
  transition: color .5s;
}
.advantage:hover .advantage__num { color: rgba(215,25,32,.15); }

/* =========================================================
   CASES
   ========================================================= */
.cases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.case {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(0,0,0,.04);
  transition: all .5s var(--ease);
  will-change: transform;
}
.case:hover {
  box-shadow: 0 24px 60px rgba(0,0,0,.12);
  transform: translateY(-4px);
}
.case__media {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bg-gray);
}
.case__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.4s var(--ease);
}
.case:hover .case__media img { transform: scale(1.08); }
.case__index {
  position: absolute;
  top: 20px; right: 20px;
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: #fff;
  background: rgba(0,0,0,.4);
  backdrop-filter: blur(10px);
  padding: 6px 12px;
  border-radius: 980px;
  border: 1px solid rgba(255,255,255,.15);
}
.case__body {
  padding: 28px 32px 36px;
}
.case__meta {
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  font-weight: 500;
  text-transform: uppercase;
}
.case__title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
  color: var(--ink);
}
.case__desc {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-3);
  font-weight: 300;
  margin-bottom: 20px;
}
.case__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  transition: gap .3s var(--ease), color .3s;
}
.case__link:hover { gap: 12px; color: var(--accent); }
.case__link svg { transition: transform .3s; }
.case__link:hover svg { transform: translate(2px, -2px); }

/* =========================================================
   PROCESS
   ========================================================= */
.process {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 24px;
}
.process__step {
  flex: 1;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  text-align: center;
  border: 1px solid var(--line);
  transition: all .5s var(--ease);
}
.process__step:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(215,25,32,.08);
}
.process__num {
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.process__title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
  color: var(--ink);
}
.process__desc {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-3);
  font-weight: 300;
}
.process__line {
  width: 32px;
  height: 1px;
  background: linear-gradient(90deg, var(--line), var(--ink-light), var(--line));
  flex-shrink: 0;
}

/* =========================================================
   CLIENTS
   ========================================================= */
.clients {
  padding: 100px 0 80px;
  background: var(--bg);
  overflow: hidden;
}
.clients__caption {
  text-align: center;
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--ink-3);
  margin-bottom: 40px;
  text-transform: uppercase;
  font-weight: 500;
}
.clients__marquee {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 30px 0;
  position: relative;
}
.clients__marquee::before,
.clients__marquee::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
}
.clients__marquee::before {
  left: 0;
  background: linear-gradient(90deg, var(--bg), transparent);
}
.clients__marquee::after {
  right: 0;
  background: linear-gradient(270deg, var(--bg), transparent);
}
.clients__track {
  display: inline-flex;
  align-items: center;
  gap: 60px;
  white-space: nowrap;
  animation: marquee 40s linear infinite;
  padding-left: 60px;
}
.clients__item {
  font-size: 28px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
  opacity: 0.4;
  transition: opacity .3s;
}
.clients__item:hover { opacity: 1; }

/* =========================================================
   CTA
   ========================================================= */
.cta {
  padding: 120px 0;
  background: #000;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 1200px; height: 1200px;
  background: radial-gradient(circle, rgba(215,25,32,.3) 0%, transparent 50%);
  transform: translate(-50%, -50%);
  filter: blur(80px);
  pointer-events: none;
  animation: ctaGlow 8s ease-in-out infinite;
}
@keyframes ctaGlow {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: .6; }
  50% { transform: translate(-50%, -50%) scale(1.1); opacity: 1; }
}
.cta__inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}
.cta__eyebrow {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--accent-2);
  margin-bottom: 24px;
}
.cta__title {
  font-size: clamp(40px, 6vw, 84px);
  line-height: 1.05;
  font-weight: 700;
  letter-spacing: -0.035em;
  color: #fff;
  margin-bottom: 24px;
}
.cta__sub {
  font-size: 18px;
  color: rgba(255,255,255,.6);
  margin-bottom: 48px;
  font-weight: 300;
}
.cta__actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* =========================================================
   FOOTER
   ========================================================= */
.footer {
  background: #000;
  color: #fff;
  padding: 80px 0 32px;
  border-top: 1px solid rgba(255,255,255,.06);
}
.footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 60px;
  margin-bottom: 60px;
}
.footer__brand {
  max-width: 320px;
}
.footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}
.footer__logo-img {
  height: 56px;
  width: auto;
  display: block;
}
.footer__logo-cn {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.footer__logo-en {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,.5);
}
.footer__desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,.5);
  font-weight: 300;
}
.footer__title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: #fff;
  margin-bottom: 20px;
  text-transform: uppercase;
}
.footer__link {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,.5);
  padding: 6px 0;
  transition: color .25s, transform .25s;
  font-weight: 300;
}
.footer__link:hover {
  color: #fff;
  transform: translateX(4px);
}
.footer__text {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255,255,255,.5);
  margin-bottom: 16px;
  font-weight: 300;
}
.footer__form {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 980px;
  padding: 4px 4px 4px 16px;
  transition: border-color .3s, background .3s;
}
.footer__form:focus-within {
  border-color: var(--accent);
  background: rgba(255,255,255,.1);
}
.footer__form input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #fff;
  font-size: 14px;
  padding: 10px 0;
}
.footer__form input::placeholder { color: rgba(255,255,255,.4); }
.footer__form button {
  width: 36px; height: 36px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  font-size: 16px;
  transition: background .3s, transform .3s;
}
.footer__form button:hover {
  background: #fff;
  color: var(--accent);
  transform: scale(1.08);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,.06);
  font-size: 12px;
  color: rgba(255,255,255,.4);
  font-weight: 300;
  flex-wrap: wrap;
  gap: 12px;
}
.footer__meta {
  display: flex;
  gap: 24px;
}
.footer__meta a {
  color: rgba(255,255,255,.4);
  transition: color .3s;
}
.footer__meta a:hover { color: #fff; }

/* =========================================================
   REVEAL ANIMATIONS
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}
.reveal-line {
  display: block;
  opacity: 0;
  transform: translateY(120%);
  transition: opacity 1s var(--ease-out), transform 1.1s var(--ease-out);
}
.reveal-line.in-view {
  opacity: 1;
  transform: translateY(0);
}
.reveal-line:nth-child(2) { transition-delay: 0.1s; }
.reveal-line:nth-child(3) { transition-delay: 0.2s; }

/* Stagger within group */
.reveal[data-delay="1"] { transition-delay: .1s; }
.reveal[data-delay="2"] { transition-delay: .2s; }
.reveal[data-delay="3"] { transition-delay: .3s; }
.reveal[data-delay="4"] { transition-delay: .4s; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1024px) {
  .stats__inner { grid-template-columns: repeat(2, 1fr); gap: 40px 20px; }
  .stat:nth-child(2)::after { display: none; }
  .products { grid-template-columns: 1fr 1fr; }
  .product-card--lg { grid-column: span 2; grid-row: auto; }
  .advantages { grid-template-columns: repeat(2, 1fr); }
  .advantage:nth-child(2) { border-right: none; }
  .advantage:nth-child(1), .advantage:nth-child(2) { border-bottom: 1px solid var(--line-light); }
  .cases { grid-template-columns: 1fr 1fr; }
  .cases .case:nth-child(3) { grid-column: span 2; }
  .process { flex-wrap: wrap; }
  .process__step { flex: 1 1 calc(50% - 24px); }
  .process__line:nth-child(odd) { display: none; }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer__brand { grid-column: span 2; }
}

@media (max-width: 768px) {
  .nav__menu, .nav__cta { display: none; }
  .nav__burger { display: block; }
  .nav__logo-cn { color: #fff; }
  .nav__logo-en { color: rgba(255,255,255,.6); }
  .nav.scrolled .nav__logo-cn { color: var(--ink); }
  .nav.scrolled .nav__logo-en { color: var(--ink-3); }
  .nav__logo-img { height: 32px; }
  .footer__logo-img { height: 48px; }

  .hero { min-height: 100svh; }
  .hero__content { margin-top: 80px; }
  .hero__scroll { display: none; }
  .hero__marquee { padding: 14px 0; }
  .hero__marquee-track { font-size: 12px; gap: 24px; }

  .stats__inner { grid-template-columns: 1fr 1fr; gap: 30px 10px; }
  .stat::after { display: none !important; }

  .products { grid-template-columns: 1fr; }
  .product-card--lg { grid-column: auto; }
  .product-card__body { padding: 24px; }

  .quote__mark { font-size: 120px; top: -20px; left: 0; }

  .advantages { grid-template-columns: 1fr; }
  .advantage { border-right: none; border-bottom: 1px solid var(--line-light); padding: 40px 28px; }
  .advantage:last-child { border-bottom: none; }
  .advantage__num { font-size: 60px; top: 36px; right: 24px; }

  .cases { grid-template-columns: 1fr; }
  .cases .case:nth-child(3) { grid-column: auto; }
  .case__body { padding: 24px; }

  .process { flex-direction: column; gap: 12px; }
  .process__step { width: 100%; }
  .process__line { width: 1px; height: 24px; background: linear-gradient(180deg, var(--line), var(--ink-light), var(--line)); }

  .clients__item { font-size: 22px; }

  .cta { padding: 80px 0; }
  .cta__actions { flex-direction: column; align-items: stretch; }
  .cta__actions .btn { justify-content: center; }

  .footer__top { grid-template-columns: 1fr; gap: 36px; }
  .footer__brand { grid-column: auto; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
  .footer__meta { flex-wrap: wrap; gap: 16px; }

  .cursor { display: none !important; }
}

@media (max-width: 480px) {
  :root { --gutter: 18px; }
  .hero__title { letter-spacing: -0.03em; }
  .product-card__title { font-size: 20px; }
  .product-card--lg .product-card__title { font-size: 24px; }
  .section__title { letter-spacing: -0.02em; }
  .stat__num { font-size: 44px; }
  .stat__suffix { font-size: 22px; }
  .quote__text { font-size: 24px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .hero__marquee-track,
  .clients__track {
    animation: none;
  }
}