/* ============================================================================
   loong 系统 · 落地页皮肤（mxskin）
   结构对齐目标站 landing：header → hero → story → journey → supply → stores →
   contact → footer。所有颜色走 tokens.css，换皮不改结构。
   ========================================================================== */

.mx-page {
  --red: var(--mx-red);
  --ink: var(--mx-ink);
  background: #fff;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
  overflow: clip;
}

.mx-page a { color: inherit; text-decoration: none; }
.mx-page h1,
.mx-page h2,
.mx-page h3,
.mx-page p { font-family: inherit; }

.section-wrap {
  width: 100%;
  max-width: 1720px;
  margin: 0 auto;
  padding-left: 6.5%;
  padding-right: 6.5%;
}

/* ---- 顶部导航 -------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  background: #fff;
  opacity: 0;
  transform: translateY(-100%);
  transition: transform .65s var(--ease-smooth), opacity .5s;
  box-shadow: 0 3px 15px rgb(0 0 0 / 3%);
}

.site-header.header-visible,
.site-header:focus-within {
  opacity: 1;
  transform: none;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: clamp(20px, 2.5vw, 48px);
  height: var(--mx-header-h);
  max-width: 1920px;
  margin: auto;
  padding: 0 clamp(24px, 5vw, 96px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  flex-shrink: 0;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: .5px;
  color: var(--red);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--red);
  color: #fff;
  font-size: 19px;
  font-weight: 800;
  font-family: var(--font-serif);
}

.brand small {
  display: block;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2px;
  color: #9aa0a6;
  text-transform: uppercase;
}

.desktop-nav {
  display: flex;
  align-items: stretch;
  flex: 1;
  justify-content: space-between;
  gap: clamp(18px, 2.2vw, 42px);
  height: 100%;
}

.nav-group {
  position: relative;
  display: flex;
  align-items: center;
}

.nav-link {
  padding: 28px 0;
  font-size: clamp(15px, 1.05vw, 18px);
  font-weight: 500;
  white-space: nowrap;
  transition: color .2s;
}

.nav-link:hover { color: var(--red); }

.submenu {
  position: absolute;
  top: calc(100% - 1px);
  left: -28px;
  min-width: 210px;
  padding: 18px 14px;
  background: #fff;
  border-radius: 0 0 12px 12px;
  box-shadow: var(--shadow-md);
  visibility: hidden;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .22s, transform .22s, visibility .22s;
}

.nav-group:hover .submenu,
.nav-group:focus-within .submenu {
  visibility: visible;
  opacity: 1;
  transform: none;
}

.submenu a {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  padding: 12px 18px;
  border-radius: 5px;
  font-size: 15px;
  transition: color .2s, background .2s;
}

.submenu a:hover {
  color: var(--red);
  background: var(--mx-red-soft);
}

.header-login {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: 9px 18px;
  border: 0;
  border-radius: 6px;
  background: var(--red);
  color: #fff;
  font-size: 15px;
  line-height: 1.4;
  white-space: nowrap;
}

.header-login > span {
  display: block;
  font-size: 11px;
  opacity: .85;
}

.menu-toggle {
  display: none;
  border: 0;
  background: none;
  color: var(--red);
  font-size: 26px;
}

/* ---- Hero ------------------------------------------------------------ */
.hero {
  position: relative;
  height: 100vh;
  height: 100svh;
  min-height: 460px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 78% 15%, #ffd9dd 0%, transparent 55%),
    radial-gradient(90% 80% at 10% 90%, #ffe9c9 0%, transparent 60%),
    linear-gradient(160deg, #fff6f7 0%, #f4f7ff 55%, #eef4ea 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -30% -10%;
  height: 60%;
  background: radial-gradient(closest-side, rgb(230 0 32 / 10%), transparent);
  filter: blur(10px);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1720px;
  padding: 0 6.5%;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: clamp(24px, 5vw, 80px);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: rgb(230 0 32 / 8%);
  color: var(--red);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .5px;
}

.hero h1 {
  margin-top: 22px;
  font-family: var(--font-serif);
  font-size: clamp(38px, 5.4vw, 82px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.5px;
}

.hero h1 em {
  font-style: normal;
  color: var(--red);
}

.hero-desc {
  max-width: 34em;
  margin-top: 22px;
  color: #5b6068;
  font-size: clamp(14px, 1.1vw, 17px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.btn-solid,
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  transition: transform .25s var(--ease-bounce), box-shadow .25s, background .25s, color .25s;
}

.btn-solid {
  background: var(--red);
  color: #fff;
  border: 1px solid var(--red);
  box-shadow: 0 10px 24px rgb(230 0 32 / 26%);
}

.btn-solid:hover { transform: translateY(-2px); box-shadow: 0 16px 32px rgb(230 0 32 / 32%); }

.btn-outline {
  border: 1px solid rgb(46 47 48 / 22%);
  color: var(--ink);
  background: transparent;
}

.btn-outline:hover { border-color: var(--red); color: var(--red); }

.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  max-height: 560px;
  border-radius: 32px;
  background: linear-gradient(150deg, #fff 0%, #ffeef0 45%, #fff7e6 100%);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 12% -12% auto auto;
  width: 62%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 30%, #ff6a7f, var(--red) 62%);
  filter: blur(.3px);
  opacity: .9;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: auto auto -18% -14%;
  width: 58%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, #ffe0a3, #ffb347 65%);
}

.hero-card {
  position: absolute;
  z-index: 2;
  padding: 16px 18px;
  border-radius: 18px;
  background: rgb(255 255 255 / 82%);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-md);
}

.hero-card.one { top: 12%; left: 8%; }
.hero-card.two { bottom: 14%; right: 8%; }

.hero-card b { display: block; font-size: 26px; font-family: var(--font-serif); }
.hero-card span { font-size: 12px; color: #6b7280; }

.scroll-cue {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  border: 0;
  background: none;
  color: var(--ink);
  font-size: 11px;
  letter-spacing: 3px;
  text-shadow: 0 2px 10px rgb(255 255 255 / 80%);
}

.scroll-cue i {
  width: 13px;
  height: 13px;
  border-right: 2px solid var(--red);
  border-bottom: 2px solid var(--red);
  transform: rotate(45deg);
  animation: mx-scroll 1.8s ease-in-out infinite;
}

@keyframes mx-scroll {
  0%, 100% { transform: rotate(45deg) translate(0, 0); opacity: .4; }
  50% { transform: rotate(45deg) translate(4px, 4px); opacity: 1; }
}

.motion-toggle {
  position: absolute;
  right: 28px;
  bottom: 28px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgb(46 47 48 / 20%);
  background: rgb(255 255 255 / 70%);
  color: var(--ink);
  backdrop-filter: blur(6px);
  font-size: 15px;
}

/* ---- 品牌故事 -------------------------------------------------------- */
.brand-story {
  position: relative;
  isolation: isolate;
  padding: 110px 0 0;
  scroll-margin-top: 85px;
}

.brand-story::before {
  content: "";
  position: absolute;
  top: 210px;
  right: 0;
  width: 46%;
  height: 420px;
  z-index: -1;
  background: radial-gradient(60% 60% at 70% 40%, rgb(230 0 32 / 7%), transparent 70%);
}

.intro h1 {
  max-width: 15em;
  font-family: var(--font-serif);
  font-size: clamp(30px, 3.4vw, 56px);
  line-height: 1.24;
  font-weight: 700;
}

.intro p {
  max-width: 46em;
  margin-top: 24px;
  color: #5b6068;
  font-size: clamp(14px, 1.05vw, 17px);
}

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(28px, 6vw, 90px);
  margin-top: 56px;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: clamp(38px, 4.6vw, 72px);
  font-weight: 700;
  line-height: 1;
  color: var(--red);
  font-variant-numeric: tabular-nums;
}

.stat-number small {
  font-size: .36em;
  margin-left: 4px;
  color: var(--ink);
}

.stats p {
  margin-top: 8px;
  color: #6b7280;
  font-size: 14px;
}

.moments {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(14px, 2vw, 28px);
  margin-top: 64px;
}

.moment {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(140deg, #ffe3e7, #fff4e0);
  transition: transform .5s var(--ease-smooth);
}

.moment:nth-child(2) { background: linear-gradient(140deg, #e6f0ff, #eafaf1); }
.moment:nth-child(3) { background: linear-gradient(140deg, #fff3d6, #ffe9ee); }

.moment:hover { transform: translateY(-6px); }

.moment-body {
  position: absolute;
  inset: auto 0 0 0;
  padding: 20px;
  color: var(--ink);
}

.moment-body b { font-family: var(--font-serif); font-size: 18px; }
.moment-body span { display: block; font-size: 13px; color: #6b7280; }

/* ---- 产品旅程 -------------------------------------------------------- */
.product-journey {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding: 120px 0 40px;
  scroll-margin-top: 85px;
}

.product-stage {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(24px, 4vw, 64px);
}

.product-scene {
  position: relative;
  aspect-ratio: 5 / 4;
  border-radius: 28px;
  overflow: hidden;
  background: linear-gradient(150deg, #fff0f2, #fff8e8 60%, #eef6ff);
  box-shadow: var(--shadow-md);
}

.product-scene .scene-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
}

.scene-blob.a { inset: 14% 16% auto auto; width: 46%; aspect-ratio: 1; background: radial-gradient(circle at 35% 32%, #ff7b8e, var(--red)); }
.scene-blob.b { inset: auto auto 10% 8%; width: 34%; aspect-ratio: 1; background: radial-gradient(circle at 38% 34%, #ffe1a6, #ffb347); }
.scene-blob.c { inset: 40% auto auto 44%; width: 22%; aspect-ratio: 1; background: radial-gradient(circle at 40% 36%, #d6f5e3, #57c98a); }

.english-label {
  font-size: 12px;
  letter-spacing: 4px;
  color: #a3a9b1;
  text-transform: uppercase;
}

.product-card h2 {
  margin-top: 12px;
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.2vw, 52px);
  line-height: 1.18;
}

.product-description {
  margin-top: 18px;
  color: #5b6068;
  max-width: 32em;
}

.product-card .btn-outline { margin-top: 26px; }

.product-tabs {
  display: flex;
  gap: 14px;
  margin-top: 32px;
}

.product-tabs button {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px 8px 10px;
  border: 1px solid rgb(46 47 48 / 12%);
  border-radius: var(--radius-pill);
  background: #fff;
  color: #6b7280;
  font-size: 13px;
  transition: .25s;
}

.tab-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #d7dbe0;
}

.product-tabs button.active {
  border-color: var(--red);
  color: var(--red);
  background: var(--mx-red-soft);
}

.product-tabs button.active .tab-dot { background: var(--red); }

.product-pagination {
  display: flex;
  align-items: center;
  gap: 18px;
  color: #6b7280;
  font-size: 13px;
}

.product-pagination small { font-variant-numeric: tabular-nums; letter-spacing: 1px; }

.product-pagination i {
  display: inline-block;
  width: 46px;
  height: 2px;
  background: #e6e8eb;
  position: relative;
}

.product-pagination i::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--p, 33%);
  background: var(--red);
  transition: width .4s;
}

/* ---- 供应链 ---------------------------------------------------------- */
.supply-section {
  padding: 110px 0;
  background: linear-gradient(180deg, #fff, #fbfcfe 60%, #fff);
  scroll-margin-top: 85px;
}

.section-title {
  max-width: 18em;
  font-family: var(--font-serif);
  font-size: clamp(26px, 3vw, 46px);
  line-height: 1.24;
}

.supply-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: clamp(24px, 4vw, 64px);
  margin-top: 52px;
  align-items: start;
}

.supply-list { display: flex; flex-direction: column; }

.supply-item { border-top: 1px solid var(--border-strong); }

.supply-item:last-child { border-bottom: 1px solid var(--border-strong); }

.supply-item > button {
  display: flex;
  align-items: center;
  gap: 18px;
  width: 100%;
  padding: 22px 4px;
  border: 0;
  background: none;
  text-align: left;
}

.supply-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: #a3a9b1;
  width: 28px;
}

.supply-heading {
  flex: 1;
  font-size: clamp(16px, 1.4vw, 20px);
  font-weight: 600;
  transition: color .25s;
}

.supply-plus {
  position: relative;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.supply-plus::before,
.supply-plus::after {
  content: "";
  position: absolute;
  background: currentColor;
  transition: transform .3s var(--ease-smooth);
}

.supply-plus::before { inset: 7px 0 7px 0; }
.supply-plus::after { inset: 0 7px 0 7px; }

.supply-item.active .supply-plus::after { transform: scaleY(0); }

.supply-item.active .supply-heading,
.supply-item:hover .supply-heading { color: var(--red); }

.supply-detail-shell {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .42s var(--ease-smooth);
}

.supply-detail-shell.expanded { grid-template-rows: 1fr; }

.supply-detail {
  overflow: hidden;
  padding: 0 4px 0 46px;
  color: #5b6068;
}

.supply-detail p { padding-bottom: 12px; }

.supply-detail ul { margin: 0; padding: 0 0 20px; list-style: none; }

.supply-detail li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 2;
}

.supply-detail li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--red);
  opacity: .5;
}

.supply-visual {
  position: relative;
  aspect-ratio: 3 / 4;
  border-radius: 28px;
  overflow: hidden;
  background: linear-gradient(160deg, #fff2f4, #eef4ff 55%, #f0fbf3);
  box-shadow: var(--shadow-md);
}

.supply-visual > span {
  position: absolute;
  inset: auto 20px 20px 20px;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgb(255 255 255 / 78%);
  backdrop-filter: blur(8px);
  font-size: 13px;
  color: #4b5563;
}

/* ---- 门店墙（跑马灯） ------------------------------------------------ */
.stores-section {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: clamp(24px, 5vw, 72px);
  align-items: center;
  padding: 110px 0;
  scroll-margin-top: 85px;
}

.stores-copy h2 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.2vw, 50px);
  line-height: 1.2;
}

.stores-copy h2 span { color: var(--red); }

.stores-copy .btn-outline { margin-top: 28px; }

.store-wall {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  height: 460px;
  overflow: hidden;
  mask-image: linear-gradient(180deg, transparent, #000 12%, #000 88%, transparent);
}

.store-column { overflow: hidden; }

.store-track {
  display: flex;
  flex-direction: column;
  gap: 14px;
  animation: mx-marquee 22s linear infinite;
}

.store-column.reverse .store-track { animation-direction: reverse; }

.store-wall:hover .store-track,
.store-wall:focus-within .store-track { animation-play-state: paused; }

@keyframes mx-marquee {
  from { transform: translateY(0); }
  to { transform: translateY(-50%); }
}

.store-set { display: flex; flex-direction: column; gap: 14px; }

.store-set a {
  display: block;
  height: 132px;
  border-radius: 16px;
  background: linear-gradient(140deg, #ffe8eb, #fff6e6);
  transition: transform .4s var(--ease-smooth);
}

.store-set a:nth-child(2n) { background: linear-gradient(140deg, #e9f1ff, #eefaf2); }
.store-set a:nth-child(3n) { background: linear-gradient(140deg, #fff4dd, #ffe9ef); }
.store-set a:hover { transform: scale(.97); }

/* ---- 联系 / CTA ------------------------------------------------------ */
.contact-section {
  padding: 100px 0 90px;
  background: #101215;
  color: #fff;
}

.contact-inner { max-width: 1720px; margin: auto; padding: 0 6.5%; }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 48px;
}

.contact-card {
  padding: 28px;
  border-radius: 20px;
  border: 1px solid rgb(255 255 255 / 10%);
  background: rgb(255 255 255 / 4%);
  transition: transform .35s var(--ease-smooth), border-color .35s, background .35s;
}

.contact-card:hover {
  transform: translateY(-4px);
  border-color: rgb(255 255 255 / 26%);
  background: rgb(255 255 255 / 8%);
}

.contact-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--red);
  font-size: 18px;
}

.contact-card h3 { margin-top: 20px; font-size: 19px; }

.contact-card p { margin-top: 10px; color: rgb(255 255 255 / 62%); font-size: 14px; }

.contact-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  padding: 11px 22px;
  border: 1px solid rgb(255 255 255 / 22%);
  border-radius: var(--radius-pill);
  font-size: 14px;
  transition: .25s;
}

.contact-cta:hover { background: var(--red); border-color: var(--red); }

/* ---- 页脚 ------------------------------------------------------------ */
.site-footer {
  padding: 64px 6.5% 40px;
  background: #0b0d10;
  color: rgb(255 255 255 / 66%);
  font-size: 13px;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  justify-content: space-between;
  padding-bottom: 32px;
  border-bottom: 1px solid rgb(255 255 255 / 8%);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 28px 48px;
}

.footer-group b {
  display: block;
  margin-bottom: 12px;
  color: #fff;
  font-size: 14px;
}

.footer-group a { display: block; line-height: 2.1; }

.footer-group a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  padding-top: 26px;
}

.quick-nav a {
  margin-left: 18px;
  padding: 6px 14px;
  border: 1px solid rgb(255 255 255 / 14%);
  border-radius: var(--radius-pill);
}

.quick-nav a:hover { border-color: #fff; color: #fff; }

/* ---- 响应式 ---------------------------------------------------------- */
@media (max-width: 1080px) {
  .desktop-nav,
  .header-login { display: none; }
  .menu-toggle { display: block; }
  .hero-inner,
  .product-stage,
  .supply-grid,
  .stores-section { grid-template-columns: 1fr; }
  .hero { height: auto; padding: 140px 0 90px; }
  .hero-visual { max-height: 420px; }
  .moments,
  .contact-grid { grid-template-columns: 1fr; }
  .store-wall { height: 320px; }
}

@media (max-width: 640px) {
  .mx-page { font-size: 15px; }
  .section-wrap { padding-left: 20px; padding-right: 20px; }
  .brand-story,
  .supply-section,
  .stores-section { padding-top: 72px; }
  .product-journey { padding-top: 72px; }
}