/* ============ RIDGE PACK · base ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bone:#20201E;
  --bone2:#262622;
  --card:#1A1A18;
  --ink:#E8E4DA;
  --ink2:#A8A29A;
  --pine:#2A2A27;
  --pine-deep:#20201E;
  --pine-ink:#141412;
  --accent:#E8722A;
  --accent2:#FF8A40;
  --line:#3A3A36;
  --line-soft:#2E2E2A;
  --fd:'Archivo','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  --fm:'IBM Plex Mono','SFMono-Regular',Menlo,monospace;
  --r:2px;
  --ease:cubic-bezier(.22,.9,.28,1);
}

html{scroll-behavior:smooth}
body{
  font-family:var(--fd);
  background:var(--bone);
  color:var(--ink);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
/* 蓝图网格纹理 */
body::after{
  content:"";position:fixed;inset:0;z-index:200;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(232,228,218,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(232,228,218,.03) 1px,transparent 1px);
  background-size:32px 32px;
}
::selection{background:var(--accent);color:var(--card)}
img,svg{display:block}
a{color:inherit}
button{font-family:inherit;color:inherit}

.container{width:min(1200px,92vw);margin:0 auto}
.mono{font-family:var(--fm)}

/* ---------- type ---------- */
.kicker{
  font-family:var(--fm);font-size:.7rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--accent);margin-bottom:1.1rem;
}
.section-dark .kicker{color:var(--accent2)}
h2{font-size:clamp(2.1rem,4.6vw,3.4rem);font-weight:800;letter-spacing:-.02em;line-height:1.08}
.section-head{
  display:flex;justify-content:space-between;align-items:flex-end;
  gap:2rem;margin-bottom:3.2rem;flex-wrap:wrap;
}
.section-desc{max-width:34ch;color:var(--ink2);font-size:.98rem;padding-bottom:.4rem}
.section{padding:7rem 0;position:relative}
.section-alt{background:var(--bone2)}
.section-dark{background:var(--pine-deep);color:var(--bone)}
.section-dark .section-desc{color:rgba(232,228,218,.6)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.95rem 1.7rem;border-radius:0;border:1px solid transparent;
  font-weight:700;font-size:.85rem;text-decoration:none;cursor:pointer;
  text-transform:uppercase;letter-spacing:.1em;
  transition:transform .35s var(--ease),background .35s var(--ease),border-color .35s var(--ease),color .35s var(--ease);
}
.btn .arr{transition:transform .35s var(--ease)}
.btn:hover .arr{transform:translateY(3px)}
.btn-solid{background:var(--accent);color:#1A1A18;border-color:var(--accent)}
.btn-solid:hover{background:var(--accent2);border-color:var(--accent2);transform:translateY(-2px)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:#1A1A18;border-color:var(--accent)}
.btn-accent:hover{background:var(--accent2);border-color:var(--accent2);transform:translateY(-2px)}
.btn-small{padding:.55rem 1.15rem;font-size:.74rem}

/* ---------- nav ---------- */
#nav{
  position:fixed;inset:0 0 auto;z-index:100;height:72px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 max(4vw,1.4rem);transition:background .4s var(--ease),border-color .4s var(--ease);
  background:rgba(32,32,30,.92);border-bottom:1px solid var(--line);
}
#nav.scrolled{background:rgba(26,26,24,.92);backdrop-filter:blur(14px);border-bottom-color:var(--line)}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none}
.brand-mark{width:26px;height:26px;color:var(--accent)}
.brand-word{font-weight:800;letter-spacing:.06em;font-size:.92rem}
.brand-word em{font-style:normal;font-family:var(--fm);font-weight:500;font-size:.62rem;color:var(--accent);margin-left:.45rem;letter-spacing:.15em}
.nav-links{display:flex;gap:2.2rem}
.nav-links a{
  text-decoration:none;font-size:.9rem;font-weight:500;position:relative;padding:.3rem 0;
  text-transform:uppercase;letter-spacing:.12em;font-family:var(--fm);font-size:.78rem;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);transition:width .35s var(--ease);
}
.nav-links a:hover::after{width:100%}

/* ---------- hero ---------- */
#hero{min-height:100svh;display:flex;flex-direction:column;position:relative;padding-top:110px;overflow:hidden}
.hero-grid{
  flex:1;display:grid;grid-template-columns:1.05fr .95fr;
  gap:3rem;align-items:center;padding:2rem 0 3rem;position:relative;z-index:2;
}
.hero-copy h1{
  font-size:clamp(3.4rem,8.4vw,7rem);font-weight:900;
  line-height:1.0;letter-spacing:-.03em;margin:.4rem 0 1.4rem;
}
.outline{color:transparent;-webkit-text-stroke:1.5px var(--ink)}
.outline-light{color:transparent;-webkit-text-stroke:1.5px var(--bone)}
.lede{max-width:44ch;color:var(--ink2);font-size:1.04rem;margin-bottom:2rem}
.hero-cta{display:flex;gap:1rem;flex-wrap:wrap}
.hero-stats{display:flex;gap:2.6rem;list-style:none;margin-top:3rem;padding-top:1.6rem;border-top:2px solid var(--line)}
.hero-stats b{display:block;font-size:1.5rem;font-weight:800;letter-spacing:-.02em;font-family:var(--fm)}
.hero-stats span{font-family:var(--fm);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink2)}

.hero-visual{position:relative;aspect-ratio:4/4.6}
.hero-disc{
  position:absolute;inset:6% 4%;border-radius:0;
  background:var(--bone2);border:1px solid var(--line);
}
.hero-disc::after{
  content:"";position:absolute;inset:-14px;border-radius:0;
  border:1px dashed var(--line);
}
.pack-stage{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;z-index:3}
.pack-stage svg{width:min(400px,82%);height:auto;filter:drop-shadow(0 30px 40px rgba(0,0,0,.6))}
#heroPack{animation:sway 7s ease-in-out infinite;transform-origin:50% 88%}
@keyframes sway{0%,100%{transform:rotate(-1.4deg)}50%{transform:rotate(1.4deg)}}

.float-chip{
  position:absolute;z-index:4;font-family:var(--fm);font-size:.68rem;letter-spacing:.08em;
  background:var(--card);border:1px solid var(--line);border-radius:0;
  padding:.45rem .9rem;box-shadow:0 10px 24px rgba(0,0,0,.5);
  animation:floaty 6s ease-in-out infinite;white-space:nowrap;text-transform:uppercase;
}
.fc-1{top:12%;left:2%}
.fc-2{top:30%;right:0;animation-delay:-2s}
.fc-3{bottom:26%;left:6%;animation-delay:-3.4s}
.fc-4{bottom:12%;right:8%;animation-delay:-1.2s}
.fc-5{top:6%;right:22%;animation-delay:-4.6s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

.topo{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
#topoHero{opacity:.55}

/* ---------- marquee ---------- */
.marquee{border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow:hidden;padding:.9rem 0;background:var(--bone)}
.marquee-inner{
  display:flex;gap:2.4rem;width:max-content;
  font-family:var(--fm);font-size:.72rem;letter-spacing:.24em;text-transform:uppercase;
  animation:marquee 32s linear infinite;color:var(--ink2);
}
.marquee-inner i{font-style:normal;color:var(--accent)}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv[data-d="80"]{transition-delay:.08s}.rv[data-d="160"]{transition-delay:.16s}
.rv[data-d="240"]{transition-delay:.24s}.rv[data-d="320"]{transition-delay:.32s}

/* ---------- toast ---------- */
#toast{
  position:fixed;left:50%;bottom:28px;transform:translate(-50%,24px);
  background:var(--pine-ink);color:var(--ink);font-size:.86rem;
  padding:.8rem 1.5rem;border-radius:0;z-index:300;opacity:0;
  pointer-events:none;transition:.45s var(--ease);box-shadow:0 16px 40px rgba(0,0,0,.6);
  border:1px solid var(--line);font-family:var(--fm);letter-spacing:.06em;
}
#toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- footer ---------- */
.footer{background:var(--pine-ink);border-top:2px solid var(--accent)}
.cta-block{padding:5rem 0 4rem;position:relative}
.cta-block h2{font-size:clamp(2.6rem,6vw,5rem);font-weight:900;letter-spacing:-.03em;line-height:1.02;margin-bottom:2.2rem;text-transform:uppercase}
.footer-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,220px));gap:2.5rem;
  padding:2.5rem 0;border-top:1px solid var(--line);
}
.footer-grid a{display:block;text-decoration:none;font-size:.9rem;color:rgba(232,228,218,.72);padding:.28rem 0;transition:color .3s,transform .3s var(--ease);font-family:var(--fm);letter-spacing:.06em}
.footer-grid a:hover{color:var(--accent);transform:translateX(4px)}
.ft-label{font-family:var(--fm);font-size:.66rem;letter-spacing:.2em;text-transform:uppercase;color:rgba(232,228,218,.4);margin-bottom:.7rem}
.footer-bar{
  display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  padding:1.4rem 0 2rem;font-size:.78rem;color:rgba(232,228,218,.45);
}
.footer-bar .mono{font-size:.68rem;letter-spacing:.08em}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:1rem}
  .hero-visual{aspect-ratio:4/3.4;max-width:520px;margin:0 auto;width:100%}
  .hero-copy h1{font-size:clamp(3rem,11vw,4.6rem)}
  .nav-links{display:none}
  .section{padding:4.5rem 0}
}
@media (max-width:640px){
  .hero-stats{gap:1.6rem;flex-wrap:wrap}
  .float-chip{font-size:.6rem;padding:.35rem .7rem}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-block{padding:3.4rem 0 2.6rem}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}

::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-thumb{background:#3A3A36}
::-webkit-scrollbar-track{background:#20201E}