/* =====================================================
   layout.css —— 导航 / 首屏 / 跑马灯 / 区块骨架 / 页脚
   ===================================================== */

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1500;
  height: var(--nav-h);
  transition: background .3s, box-shadow .3s;
}
.nav.is-scrolled {
  background: rgba(246, 241, 230, .88);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--ink);
}

.nav__inner {
  width: var(--container);
  height: 100%;
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand__mark {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  background: var(--ink);
  color: var(--lime);
  font-size: 1.1rem;
  border-radius: 10px;
  transition: transform .3s, background .3s;
}
.brand:hover .brand__mark {
  transform: rotate(90deg);
  background: var(--orange);
  color: var(--ink);
}
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__text strong { font-size: 1.05rem; font-weight: 900; letter-spacing: .06em; }
.brand__text em {
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .22em;
  color: var(--ink-soft);
}

.nav__links {
  display: flex;
  gap: 6px;
  margin-left: auto;
}
.nav__links a {
  position: relative;
  padding: 8px 14px;
  font-weight: 700;
  font-size: .95rem;
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 4px;
  background: var(--lime);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s;
}
.nav__links a:hover::after,
.nav__links a.active::after { transform: scaleX(1); }
.nav__links a.active { color: var(--ink); }

.nav .btn { margin-left: 4px; }

/* 汉堡按钮 */
.nav__burger {
  display: none;
  width: 44px; height: 44px;
  border: var(--line);
  border-radius: 12px;
  background: var(--paper);
  position: relative;
  z-index: 1700;
}
.nav__burger span {
  position: absolute;
  left: 11px; right: 11px;
  height: 2.5px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .3s, top .3s;
}
.nav__burger span:nth-child(1) { top: 16px; }
.nav__burger span:nth-child(2) { top: 25px; }
.nav__burger.is-open span:nth-child(1) { top: 20px; transform: rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { top: 20px; transform: rotate(-45deg); }

/* ---------- 移动端全屏菜单 ---------- */
.mnav {
  position: fixed;
  inset: 0;
  z-index: 1600;
  background: var(--ink);
  color: var(--paper);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8vh;
  padding: 100px 8vw 60px;
  clip-path: circle(0 at calc(100% - 60px) 38px);
  visibility: hidden;
  transition: clip-path .55s cubic-bezier(.7, 0, .3, 1), visibility 0s .55s;
}
.mnav.is-open {
  clip-path: circle(150% at calc(100% - 60px) 38px);
  visibility: visible;
  transition: clip-path .55s cubic-bezier(.7, 0, .3, 1);
}

.mnav__links { display: flex; flex-direction: column; gap: 6px; }
.mnav__links a {
  display: flex;
  align-items: baseline;
  gap: 16px;
  font-size: clamp(2rem, 8vw, 3.2rem);
  font-weight: 900;
  padding: 6px 0;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .4s, transform .4s, color .2s;
  transition-delay: 0s;
}
.mnav.is-open .mnav__links a {
  opacity: 1;
  transform: none;
  transition-delay: calc(.15s + var(--i) * .07s);
}
.mnav__links a:hover { color: var(--lime); }
.mnav__links a small {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .3em;
  color: var(--orange);
}

.mnav__meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: .85rem;
  color: rgba(246, 241, 230, .75);
}
.mnav__meta a:hover { color: var(--lime); }

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-h);
}
#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}
.hero__inner {
  position: relative;
  z-index: 2;
  padding-block: 9vh 12vh;
}

.hero__chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  border: var(--line);
  border-radius: 999px;
  background: var(--paper);
  font-weight: 700;
  font-size: .9rem;
  box-shadow: 4px 4px 0 var(--pink);
}

.hero__title {
  margin-top: 34px;
  font-size: clamp(3.2rem, 10.5vw, 8.2rem);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: .01em;
}
.hero__title > span { display: block; }
.hero__title mark { color: var(--ink); }

.hero__sub {
  margin-top: 30px;
  max-width: 560px;
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  color: var(--ink-soft);
  font-weight: 500;
}

.hero__cta {
  margin-top: 38px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero__meta {
  margin-top: 46px;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--ink-soft);
}

/* 旋转贴纸 */
.sticker {
  position: absolute;
  right: 7vw;
  bottom: 12vh;
  z-index: 3;
  width: clamp(110px, 13vw, 158px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--orange);
  border: var(--line);
  box-shadow: 5px 5px 0 var(--ink);
  transition: transform .3s, box-shadow .3s;
}
.sticker:hover { transform: rotate(8deg) scale(1.05); }
.sticker svg {
  position: absolute;
  inset: 6%;
  animation: spin 14s linear infinite;
}
.sticker text {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 1.5px;
  fill: var(--ink);
}
.sticker__star {
  font-size: 2rem;
  font-weight: 900;
  color: var(--ink);
  animation: bob 1.6s ease-in-out infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes bob { 0%, 100% { transform: translateY(-3px); } 50% { transform: translateY(4px); } }

/* 背景大字 */
.hero__ghost {
  position: absolute;
  z-index: 1;
  right: -2vw;
  top: 6vh;
  font-family: var(--font-display);
  font-size: clamp(7rem, 22vw, 19rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(20, 18, 14, .14);
  pointer-events: none;
  user-select: none;
}

/* ---------- 跑马灯 ---------- */
.marquee {
  overflow: hidden;
  border-block: var(--line);
  padding-block: 18px;
  position: relative;
  z-index: 2;
}
.marquee--a {
  background: var(--lime);
  transform: rotate(-1.6deg) scale(1.03);
  margin-block: -14px 0;
}
.marquee--b {
  background: var(--ink);
  color: var(--paper);
  transform: rotate(1.6deg) scale(1.03);
  margin-block: 0 -14px;
}
.marquee--b .marquee__group i { color: var(--orange); }

.marquee__track {
  display: flex;
  width: max-content;
  animation: mq 24s linear infinite;
}
.marquee--b .marquee__track { animation-direction: reverse; }
.marquee__group {
  display: flex;
  align-items: center;
  gap: 2.4rem;
  padding-right: 2.4rem;
  white-space: nowrap;
  font-weight: 900;
  font-size: clamp(1.3rem, 2.6vw, 2rem);
  letter-spacing: .04em;
}
.marquee__group i {
  font-style: normal;
  font-size: .8em;
  color: var(--orange);
}
@keyframes mq { to { transform: translateX(-50%); } }

/* ---------- 区块骨架 ---------- */
.section {
  position: relative;
  padding-block: clamp(90px, 11vw, 150px);
}

.sec-head { margin-bottom: clamp(44px, 6vw, 72px); }
.sec-label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  margin-bottom: 22px;
}
.sec-label em {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  border: var(--line);
  border-radius: 50%;
  background: var(--lime);
  font-size: .8rem;
}
.sec-title {
  font-size: clamp(2.1rem, 5.4vw, 4rem);
  font-weight: 900;
  line-height: 1.16;
}
.sec-sub {
  margin-top: 18px;
  max-width: 520px;
  color: var(--ink-soft);
  font-weight: 500;
}

/* 深色区块（流程） */
.process {
  background: var(--ink);
  color: var(--paper);
}
.process .sec-label { color: var(--lime); }
.process .sec-label em { background: var(--orange); color: var(--ink); }
.process .sec-sub { color: rgba(246, 241, 230, .72); }

/* ---------- 页脚 ---------- */
.footer {
  background: var(--ink);
  color: var(--paper);
  padding-top: clamp(60px, 8vw, 100px);
  overflow: hidden;
}
.footer__big {
  font-family: var(--font-display);
  font-size: clamp(4rem, 15vw, 13rem);
  line-height: .95;
  text-align: center;
  white-space: nowrap;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(246, 241, 230, .25);
  user-select: none;
  transition: -webkit-text-stroke-color .4s;
}
.footer:hover .footer__big { -webkit-text-stroke-color: var(--lime); }

.footer__inner { padding-block: 46px 0; }
.footer__cols {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 44px;
}
.footer__brand p {
  margin-top: 16px;
  color: rgba(246, 241, 230, .65);
  font-size: .92rem;
}
.footer .brand__text em { color: rgba(246, 241, 230, .55); }

.footer__nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-weight: 700;
}
.footer__nav a { width: fit-content; transition: color .2s, transform .2s; }
.footer__nav a:hover { color: var(--lime); transform: translateX(6px); }

.footer__contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: .85rem;
  color: rgba(246, 241, 230, .75);
}
.footer__contact a:hover { color: var(--lime); }

.footer__bar {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding-block: 20px;
  border-top: 1px solid rgba(246, 241, 230, .18);
  font-size: .8rem;
  color: rgba(246, 241, 230, .55);
}
.footer__bar-right { display: inline-flex; gap: 18px; align-items: center; }
.footer__bar a:hover { color: var(--lime); }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .nav__links, .nav .btn { display: none; }
  .nav__burger { display: block; margin-left: auto; }

  .footer__cols { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .sticker { right: 5vw; bottom: 6vh; }
  .hero__ghost { top: 3vh; }
  .footer__cols { grid-template-columns: 1fr; gap: 30px; }
}