/* 服装侠客 · 投资合作页（只做氛围演示，不展开产品细节） */
:root {
  --bg: #FFFFFF;
  --bg-alt: #F5F5F5;
  --ink: #111111;
  --ink-2: #333333;
  --muted: #6A6A6A;
  --line: #E6E6E6;
  --line-2: #D2D2D2;
  --red: #D7000F;
  --red-deep: #B0000C;
  --orange: #FF6B1A;
  --dark: #0B0D10;
  --dark-2: #14181E;
  --dark-line: rgba(255,255,255,0.12);
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --wrap: 1120px;
  --nav-h: 56px;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
p, li, h1, h2, h3, h4 { text-wrap: pretty; overflow-wrap: break-word; }
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px;
  min-width: 0;
}
section { scroll-margin-top: calc(var(--nav-h) + 8px + var(--safe-top)); }
.hl { color: var(--red); }
.hl-o { color: var(--orange); }

/* ---- Nav ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: calc(var(--nav-h) + var(--safe-top));
  padding-top: var(--safe-top);
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
}
.nav-inner {
  height: var(--nav-h);
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}
.brand-link { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-mark {
  width: 28px; height: 28px; flex: none;
  background: var(--ink); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: 16px; line-height: 1; position: relative;
}
.brand-mark::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px; background: var(--red);
}
.brand-name { display: flex; flex-direction: column; min-width: 0; line-height: 1.1; }
.brand-name strong { font-size: 15px; font-weight: 700; font-style: normal; }
.brand-name em {
  font-size: 9px; font-weight: 600; font-style: normal;
  letter-spacing: 0.12em; color: var(--muted);
}
.nav-links {
  display: none; align-items: center; gap: 22px;
  margin-left: auto; font-size: 13px; font-weight: 500;
  color: var(--ink-2); min-width: 0;
}
.nav-links a:hover { color: var(--red); }
.nav-cta { margin-left: auto; display: flex; align-items: center; flex: none; }
.nav-links + .nav-cta { margin-left: 20px; }
.nav.is-dark {
  background: rgba(11,13,16,0.88);
  border-bottom-color: var(--dark-line);
  color: #fff;
  box-shadow: 0 1px 0 rgba(255,255,255,0.04);
}
.nav.is-dark .brand-mark { background: #fff; color: var(--ink); }
.nav.is-dark .brand-name em { color: rgba(255,255,255,0.55); }
.nav.is-dark .nav-links { color: rgba(255,255,255,0.78); }
.nav.is-dark .nav-links a:hover { color: #fff; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 8px 18px;
  border: 1px solid transparent;
  font-size: 15px; font-weight: 700; letter-spacing: 0.04em;
  text-align: center; cursor: pointer; min-width: 0;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-sm { min-height: 34px; padding: 5px 12px; font-size: 13px; }
.btn-red { background: var(--red); color: #fff; border-color: var(--red); }
.btn-red:hover { background: var(--red-deep); box-shadow: 0 8px 22px rgba(215,0,15,0.35); transform: translateY(-1px); }
.btn-ink { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn-ink:hover { box-shadow: 0 8px 22px rgba(0,0,0,0.28); transform: translateY(-1px); }
.btn-line { background: transparent; color: #fff; border-color: rgba(255,255,255,0.35); }
.btn-line:hover { background: #fff; color: var(--ink); }
.btn:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; }

/* ---- Hero ---- */
.hero {
  position: relative;
  background:
    radial-gradient(900px 500px at 80% 30%, rgba(215,0,15,0.16), transparent 60%),
    radial-gradient(700px 420px at 10% 80%, rgba(255,107,26,0.08), transparent 55%),
    var(--dark);
  color: #fff;
  padding: 28px 0 36px;
  min-height: calc(100svh - var(--nav-h) - var(--safe-top));
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-glow {
  pointer-events: none;
  position: absolute;
  width: 70vw; height: 70vw;
  max-width: 640px; max-height: 640px;
  right: -8%; top: 12%;
  background: radial-gradient(circle, rgba(215,0,15,0.28) 0%, rgba(255,107,26,0.08) 42%, transparent 70%);
  filter: blur(8px);
}
.hero-inner {
  width: 100%; max-width: var(--wrap);
  margin: 0 auto; padding: 0 20px;
  display: grid; grid-template-columns: 1fr; gap: 8px;
  min-width: 0; position: relative;
}
.kicker {
  margin: 0 0 8px;
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: 0.18em; color: #fff;
}
.kicker::before { content: ""; width: 18px; height: 2px; background: var(--red); flex: none; }
.hero h1 { margin: 0; line-height: 1.12; }
.h1-top { display: block; font-size: clamp(26px, 7.6vw, 48px); font-weight: 800; }
.h1-boom { display: block; font-size: clamp(30px, 9vw, 56px); font-weight: 800; color: var(--red); }
.hero-s2 {
  margin: 14px 0 0;
  font-size: clamp(16px, 4.4vw, 22px);
  font-weight: 700; line-height: 1.45; max-width: 18em;
}
.hero-model {
  margin: 10px 0 0;
  font-size: clamp(13px, 3.5vw, 16px);
  font-weight: 600; color: rgba(255,255,255,0.72);
  line-height: 1.5; max-width: 26em;
}
.hero-art { position: relative; margin: 8px auto 0; width: min(100%, 420px); }
.rider-in { animation: ride-in 1.05s cubic-bezier(.16,1,.3,1) 0.35s both; }
.rider-bob { animation: bob 3.2s ease-in-out 1.4s infinite; }
.hero-art img.rider { width: 100%; height: auto; position: relative; z-index: 1; }
.hero-hint {
  margin: 18px 0 0;
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600;
  color: rgba(255,255,255,0.62); letter-spacing: 0.04em;
}
.hero-hint .chev {
  width: 18px; height: 18px; flex: none;
  border-right: 2px solid rgba(255,255,255,0.7);
  border-bottom: 2px solid rgba(255,255,255,0.7);
  transform: rotate(45deg) translateY(-3px);
  animation: chev 1.4s ease-in-out 1.6s infinite;
}
.enter-kicker { animation: rise 0.7s ease 0.12s both; }
.enter-h1-1 { animation: rise 0.8s ease 0.28s both; }
.enter-h1-2 { animation: rise 0.8s ease 0.42s both; }
.enter-s2 { animation: rise 0.75s ease 0.58s both; }
.enter-model { animation: rise 0.75s ease 0.72s both; }
.enter-hint { animation: rise 0.7s ease 1.15s both; }
.enter-mark { animation: stamp 0.6s cubic-bezier(.16,1,.3,1) 0.05s both; }

@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}
@keyframes stamp {
  from { opacity: 0; transform: scale(0.6); }
  to { opacity: 1; transform: none; }
}
@keyframes ride-in {
  from { transform: translateX(-48px); opacity: 0; }
  to { transform: none; opacity: 1; }
}
@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
@keyframes chev {
  0%, 100% { opacity: 0.35; transform: rotate(45deg) translateY(-5px); }
  50% { opacity: 1; transform: rotate(45deg) translateY(2px); }
}
@keyframes floaty {
  0%, 100% { transform: translateY(var(--drift, 0px)) rotate(var(--rot, 0deg)); }
  50% { transform: translateY(calc(var(--drift, 0px) - 10px)) rotate(var(--rot, 0deg)); }
}

/* ---- Sections typography ---- */
.sec-pad { padding: 64px 0 56px; }
.sec-kicker {
  margin: 0 0 8px;
  font-size: 12px; font-weight: 700; letter-spacing: 0.16em; color: var(--red);
}
.sec-title {
  margin: 0;
  font-size: clamp(24px, 6.4vw, 40px);
  font-weight: 800; line-height: 1.2;
}
.sec-lead {
  margin: 12px 0 0;
  font-size: 15px; font-weight: 500; color: var(--ink-2);
  max-width: 36em; line-height: 1.7;
}

/* ---- Pain ---- */
#pain { background: var(--dark-2); color: #fff; border-top: 1px solid var(--dark-line); }
#pain .sec-lead { color: rgba(255,255,255,0.68); }
.pain-grid { margin-top: 28px; display: grid; gap: 0; }
.pain-card { padding: 20px 0; border-top: 1px solid var(--dark-line); }
.pain-no { font-size: 12px; font-weight: 700; color: var(--red); letter-spacing: 0.08em; }
.pain-card h3 { margin: 6px 0 0; font-size: 22px; font-weight: 800; }

/* ---- Tease theater ---- */
.tease {
  position: relative;
  background:
    radial-gradient(800px 480px at 78% 42%, rgba(215,0,15,0.14), transparent 62%),
    radial-gradient(600px 400px at 18% 70%, rgba(255,107,26,0.10), transparent 58%),
    var(--dark);
  color: #fff;
  height: 300vh;
  border-top: 1px solid var(--dark-line);
  overflow-x: clip;
}
.tease-pin {
  position: sticky;
  top: calc(var(--nav-h) + var(--safe-top));
  height: calc(100svh - var(--nav-h) - var(--safe-top));
  display: flex;
  align-items: stretch;
  overflow: hidden;
}
.tease-inner {
  width: 100%; max-width: var(--wrap);
  margin: 0 auto; padding: 20px 20px 24px;
  display: flex; flex-direction: column;
  gap: 16px; min-width: 0; min-height: 0;
}
.tease-stage {
  flex: 1; min-height: 0; min-width: 0;
  display: flex; flex-direction: column; gap: 16px;
}
.tease-copy { min-width: 0; flex: none; }
.tease-lines { display: grid; }
.tease-line {
  grid-area: 1 / 1;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity 0.5s cubic-bezier(0.22, 1, 0.36, 1), transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}
.tease-line.is-on { opacity: 1; transform: none; }
.tease-line h2 {
  margin: 0;
  font-size: clamp(32px, 9vw, 64px);
  font-weight: 800; line-height: 1.1; letter-spacing: 0.02em;
}
.tease-note {
  margin: 10px 0 0;
  font-size: 13px; color: rgba(255,255,255,0.48); line-height: 1.6;
}
.tease-cta { margin-top: 16px; }

.tease-phones {
  --drift: 0px;
  position: relative;
  flex: 1;
  min-height: 0;
  min-width: 0;
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  overflow: hidden;
}
.tease-phones .ph {
  position: absolute;
  width: 46%;
  height: auto;
  border-radius: 22px / 18px;
  box-shadow:
    0 18px 40px rgba(0,0,0,0.5),
    0 0 0 1px rgba(255,255,255,0.08);
  animation: floaty 6.5s ease-in-out infinite;
  will-change: transform;
}
.tease-phones .ph-a {
  --rot: 7deg;
  right: 6%; top: 4%;
  z-index: 2;
  box-shadow: 0 18px 40px rgba(0,0,0,0.5), 0 0 36px rgba(215,0,15,0.22);
  animation-delay: 0s;
}
.tease-phones .ph-b {
  --rot: -8deg;
  left: 4%; top: 16%;
  z-index: 3;
  width: 50%;
  box-shadow: 0 18px 40px rgba(0,0,0,0.55), 0 0 36px rgba(255,107,26,0.28);
  animation-duration: 7.2s;
  animation-delay: 0.3s;
}
.tease-phones .ph-c {
  --rot: 3deg;
  left: 28%; bottom: -6%;
  z-index: 1;
  width: 44%;
  opacity: 0.88;
  animation-duration: 8s;
  animation-delay: 0.6s;
}

/* reduced motion / no-js: stacked, no sticky theater */
.tease-static { display: none; }
.tease.is-static,
html.is-reduced .tease,
html:not(.js) .tease {
  height: auto;
  padding: 48px 0 56px;
}
.tease.is-static .tease-pin,
html.is-reduced .tease .tease-pin,
html:not(.js) .tease .tease-pin {
  position: relative; top: auto; height: auto; overflow: visible;
}
.tease.is-static .tease-stage,
html.is-reduced .tease .tease-stage,
html:not(.js) .tease .tease-stage { display: none; }
.tease.is-static .tease-static,
html.is-reduced .tease .tease-static,
html:not(.js) .tease .tease-static { display: block; }
.tease-static h2 {
  margin: 0 0 12px;
  font-size: clamp(28px, 8vw, 48px);
  font-weight: 800; line-height: 1.2;
}
.tease-static .tease-note { margin: 0 0 20px; }
.tease-static .cluster {
  position: relative;
  width: min(360px, 100%);
  aspect-ratio: 1 / 1.05;
  margin: 0 auto 24px;
  overflow: hidden;
}
.tease-static .cluster img {
  position: absolute; width: 48%;
  border-radius: 22px / 18px;
  box-shadow: 0 16px 36px rgba(0,0,0,0.5);
}
.tease-static .cluster .ph-a { right: 6%; top: 4%; transform: rotate(7deg); }
.tease-static .cluster .ph-b { left: 4%; top: 16%; width: 52%; transform: rotate(-8deg); z-index: 2; }
.tease-static .cluster .ph-c { left: 28%; bottom: 0; transform: rotate(3deg); }

/* ---- Light sections ---- */
#status { background: var(--bg); }
#why, #contact { background: var(--bg-alt); }
#cooperate, #enter { background: var(--bg); }
.why-grid, .coop-grid { margin-top: 28px; display: grid; gap: 20px; }
.why-card .num, .coop .ico {
  font-size: 12px; font-weight: 700; color: var(--red); letter-spacing: 0.08em;
}
.why-card h3, .coop h3 { margin: 8px 0 0; font-size: 18px; font-weight: 800; }
.why-card p, .coop p { margin: 8px 0 0; font-size: 14px; color: var(--ink-2); }
.coop { position: relative; }
.coop.join { overflow: hidden; }
.coop.join p { padding-right: 110px; }
.coop-face {
  position: absolute; right: -10px; bottom: 0;
  width: 128px; pointer-events: none;
}

.contact-hold {
  margin: 24px 0 0;
  padding: 16px 18px;
  border: 1px dashed var(--line-2);
  background: #fff;
  text-align: center;
}
.contact-hold h3 { margin: 0 0 6px; font-size: 17px; }
.contact-hold p { margin: 0; font-size: 14px; color: var(--muted); }
.contact-hold .btn { margin-top: 14px; }

#enter { border-top: 1px solid var(--line); padding-bottom: 56px; }
.qr-pair { margin-top: 28px; display: grid; gap: 16px; min-width: 0; }
.qr-enter {
  display: flex; flex-direction: column; align-items: center;
  text-align: center; border: 1px solid var(--line);
  background: #fff; padding: 24px 16px 22px; min-width: 0;
  transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.25s ease, border-color 0.25s ease;
}
.qr-enter:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(0,0,0,0.08);
}
.qr-enter:first-child:hover { border-color: rgba(215,0,15,0.35); }
.qr-enter:last-child:hover { border-color: rgba(255,107,26,0.4); }
.qr-enter img { width: min(180px, 56vw); height: auto; }
.qr-enter h3 { margin: 14px 0 0; font-size: 18px; font-weight: 800; }
.qr-cap {
  margin: 8px 0 0; font-size: 13px; color: var(--ink-2);
  font-weight: 500; line-height: 1.55; max-width: 22em; word-break: break-all;
}
.qr-enter .qr-open { margin-top: 14px; min-width: 168px; }

footer {
  background: var(--ink); color: #fff; text-align: center;
  padding: 36px 20px calc(28px + var(--safe-bottom));
}
footer .brand-foot { margin: 0; font-size: 14px; font-weight: 700; letter-spacing: 0.08em; }
footer .assist { margin: 8px 0 0; font-size: 13px; color: rgba(255,255,255,0.7); }
footer .assist b { color: #fff; font-weight: 700; }
footer .meta { margin: 10px 0 0; font-size: 12px; color: rgba(255,255,255,0.5); }
footer .legal { margin: 12px auto 0; font-size: 11px; line-height: 1.6; max-width: 36em; color: rgba(255,255,255,0.4); }

@media (min-width: 760px) {
  .wrap, .nav-inner, .hero-inner, .tease-inner { padding-left: 28px; padding-right: 28px; }
  .nav-links { display: flex; }
  .hero { padding: 24px 0 36px; }
  .hero-inner {
    grid-template-columns: 1fr 1.08fr;
    grid-template-rows: auto auto auto auto auto;
    column-gap: 40px; row-gap: 0; align-items: center;
  }
  .kicker, .hero h1, .hero-s2, .hero-model, .hero-hint { grid-column: 1; }
  .hero-art { grid-column: 2; grid-row: 1 / -1; width: 100%; max-width: none; margin: 0; }
  .h1-top { font-size: 44px; }
  .h1-boom { font-size: 52px; }
  .pain-grid { grid-template-columns: 1fr 1fr; column-gap: 40px; }
  .why-grid { grid-template-columns: repeat(3, 1fr); }
  .coop-grid { grid-template-columns: repeat(4, 1fr); gap: 24px; }
  .qr-pair { grid-template-columns: 1fr 1fr; gap: 24px; }
  .tease-inner { padding-top: 28px; padding-bottom: 28px; }
  .tease-stage { flex-direction: row; align-items: center; gap: 40px; }
  .tease-copy { flex: 1 1 0; min-width: 0; }
  .tease-phones { flex: 0 1 420px; width: min(420px, 42vw); height: min(520px, calc(100svh - var(--nav-h) - 80px)); margin: 0; }
  .tease-static { display: none; }
  html:not(.js) .tease-static, html.is-reduced .tease-static, .tease.is-static .tease-static {
    display: grid; grid-template-columns: 1fr 380px; gap: 48px; align-items: center;
  }
}

@media (max-width: 380px) {
  .h1-top { font-size: 24px; }
  .h1-boom { font-size: 28px; }
  .coop.join p { padding-right: 96px; }
  .tease-line h2 { font-size: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .enter-kicker, .enter-h1-1, .enter-h1-2, .enter-s2, .enter-model, .enter-hint, .enter-mark,
  .rider-in, .rider-bob { opacity: 1 !important; transform: none !important; }
  .btn, .qr-enter { transition: none !important; transform: none !important; }
  .tease-phones .ph { animation: none !important; }
}