.page-home{
  --home-section-pad:clamp(56px,8vw,120px);
  background:var(--ink);
  color:var(--paper);
  overflow-x:clip;
}
.page-home *,
.page-home *::before,
.page-home *::after{box-sizing:border-box;}
.page-home img{max-width:100%;height:auto;display:block;}
.page-home a:focus-visible,
.page-home button:focus-visible{outline:2px solid var(--gold);outline-offset:3px;}

/* ---------- 顶部上下文 ---------- */
.page-home .home-topline{
  display:flex;
  flex-wrap:wrap;
  gap:8px 28px;
  align-items:baseline;
  justify-content:space-between;
  padding-top:clamp(22px,4vw,44px);
  padding-bottom:clamp(14px,2.2vw,24px);
  border-bottom:1px solid var(--line-soft);
}
.page-home .home-topline__crumb{
  margin:0;
  font-size:14px;
  letter-spacing:.02em;
  color:var(--muted);
}
.page-home .home-topline__crumb strong{color:var(--paper);font-weight:600;}
.page-home .home-topline__meta{
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--gold);
}

/* ---------- 首屏拼贴 ---------- */
.page-home .collage{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:1px;
  margin-top:clamp(20px,3vw,36px);
  background:var(--line-soft);
  border:1px solid var(--line);
}
.page-home .collage__lead{
  position:relative;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  min-height:clamp(360px,54vh,580px);
  background:var(--ink-2);
  overflow:hidden;
}
.page-home .collage__media{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.42;
  filter:saturate(.72);
}
.page-home .collage__lead::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(105deg,rgba(11,27,51,.95) 0%,rgba(11,27,51,.74) 46%,rgba(11,27,51,.24) 100%);
}
.page-home .collage__lead-panel{
  position:relative;
  z-index:1;
  padding:clamp(24px,3.6vw,52px);
  display:flex;
  flex-direction:column;
  align-items:flex-start;
}
.page-home .collage__lead-panel h1{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(29px,4.4vw,54px);
  line-height:1.14;
  letter-spacing:.01em;
  margin:16px 0 16px;
  max-width:15ch;
}
.page-home .collage__lede{
  margin:0 0 20px;
  max-width:44ch;
  font-size:clamp(15px,1.4vw,17px);
  line-height:1.78;
  color:#D6DEE8;
}
.page-home .collage__id{
  margin:0 0 24px;
  padding-left:12px;
  border-left:2px solid var(--gold);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.07em;
  line-height:1.7;
  color:var(--muted);
}
.page-home .collage__actions{display:flex;flex-wrap:wrap;gap:12px;}

.page-home .collage__tile{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:clamp(22px,2.6vw,34px);
  background:var(--ink-2);
  color:inherit;
  text-decoration:none;
  border-top:2px solid transparent;
  transition:transform var(--fast) var(--ease),border-color var(--fast) var(--ease),background var(--fast) var(--ease);
}
.page-home .collage__tile:hover,
.page-home .collage__tile:focus-visible{
  transform:translateY(-2px);
  border-top-color:var(--gold);
  background:var(--ink-3);
}
.page-home .collage__tile .eyebrow{color:var(--muted);}
.page-home .collage__figure{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(32px,3.4vw,46px);
  line-height:1;
  letter-spacing:.05em;
  color:var(--gold);
}
.page-home .collage__tile-title{font-size:19px;font-weight:700;line-height:1.45;color:var(--paper);}
.page-home .collage__tile-text{font-size:14px;line-height:1.72;color:var(--muted);}

/* ---------- 通用章节 ---------- */
.page-home .section{padding:var(--home-section-pad) 0;}
.page-home .section--paper{background:var(--paper);color:var(--graphite);}
.page-home .sec-head{
  padding-bottom:clamp(16px,2.2vw,26px);
  border-bottom:1px solid var(--line-soft);
}
.page-home .sec-num{
  display:block;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(48px,7.6vw,92px);
  line-height:.92;
  letter-spacing:.02em;
  color:var(--gold);
}
.page-home .sec-title{
  margin:10px 0 0;
  font-size:clamp(23px,2.9vw,32px);
  font-weight:700;
  line-height:1.35;
  color:var(--paper);
  max-width:26ch;
}
.page-home .sec-note{
  margin:12px 0 0;
  font-size:14px;
  line-height:1.7;
  color:var(--muted);
  max-width:52ch;
}
.page-home .section--paper .sec-head{border-bottom-color:var(--paper-line);}
.page-home .section--paper .sec-title{color:var(--graphite);}
.page-home .section--paper .sec-note{color:var(--graphite-soft);}
.page-home .section__lede{
  margin:clamp(22px,3vw,34px) 0 0;
  max-width:62ch;
  font-size:clamp(15px,1.4vw,17px);
  line-height:1.85;
  color:var(--graphite-soft);
}
.page-home .link-inline{
  color:var(--gold-lift);
  text-decoration:none;
  border-bottom:1px solid var(--gold);
}
.page-home .link-inline:hover{color:var(--paper);border-bottom-color:var(--paper);}
.page-home .section--paper .link-inline{color:var(--graphite);border-bottom-color:var(--gold);}
.page-home .section--paper .link-inline:hover{color:var(--cinnabar);border-bottom-color:var(--cinnabar);}

/* ---------- 编号卡片 ---------- */
.page-home .adj-grid{
  list-style:none;
  margin:clamp(26px,3.6vw,48px) 0 0;
  padding:0;
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:1px;
  background:var(--line-soft);
  border:1px solid var(--line);
}
.page-home .adj-grid > li{display:flex;}
.page-home .adj-grid .num-card{
  flex:1;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:24px 22px 28px;
  min-height:184px;
  background:var(--ink);
  color:inherit;
  text-decoration:none;
  border-top:2px solid rgba(36,64,95,.9);
  transition:transform var(--fast) var(--ease),border-color var(--fast) var(--ease),background var(--fast) var(--ease);
}
.page-home .adj-grid .num-card:hover,
.page-home .adj-grid .num-card:focus-visible{
  transform:translateY(-2px);
  border-top-color:var(--gold);
  background:var(--ink-2);
}
.page-home .num-card__index{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.16em;
  color:var(--gold);
}
.page-home .num-card__title{font-size:17px;font-weight:700;line-height:1.45;color:var(--paper);}
.page-home .num-card__text{font-size:13.5px;line-height:1.72;color:var(--muted);}
.page-home .adj-foot{margin:clamp(22px,3vw,32px) 0 0;font-size:15px;}

/* ---------- 旧新对照 ---------- */
.page-home .compare{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:1px;
  margin-top:clamp(26px,3.6vw,44px);
  background:var(--paper-line);
  border:1px solid var(--paper-line);
}
.page-home .compare__col{
  padding:clamp(22px,3vw,34px);
  color:var(--paper);
}
.page-home .compare__col--old{background:var(--ink-2);border-left:3px solid var(--cinnabar);}
.page-home .compare__col--new{background:var(--ink);border-left:3px solid var(--gold);}
.page-home .compare__head{
  margin:0;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--muted);
}
.page-home .cmp-list{
  list-style:none;
  margin:18px 0 0;
  padding:0;
  display:grid;
  gap:14px;
}
.page-home .cmp-list li{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:12px;
  font-size:14.5px;
  line-height:1.72;
  color:#C9D4E1;
}
.page-home .cmp-idx{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  padding-top:4px;
  color:var(--muted);
}
.page-home .compare__col--new .cmp-idx{color:var(--gold);}

/* ---------- 速度 ---------- */
.page-home .speed{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:clamp(24px,3.2vw,44px);
  margin-top:clamp(24px,3.2vw,44px);
  align-items:center;
}
.page-home .speed__copy{
  font-size:clamp(15px,1.4vw,17px);
  line-height:1.88;
  color:#D3DCE7;
}
.page-home .speed__copy p{margin:0 0 16px;}
.page-home .speed__copy p:last-child{margin-bottom:0;}

.page-home .speed-stats{
  list-style:none;
  margin:clamp(30px,4vw,52px) 0 0;
  padding:0;
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:1px;
  background:var(--line-soft);
  border:1px solid var(--line);
}
.page-home .speed-stat{
  display:flex;
  flex-direction:column;
  gap:8px;
  padding:24px 22px 26px;
  background:var(--ink-2);
}
.page-home .speed-stat__num{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(28px,3.4vw,40px);
  line-height:1.05;
  color:var(--gold-lift);
}
.page-home .speed-stat__label{font-size:13.5px;line-height:1.65;color:var(--muted);}

/* ---------- 下一步 ---------- */
.page-home .next{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:clamp(24px,3.2vw,44px);
  margin-top:clamp(24px,3.2vw,44px);
  align-items:start;
}
.page-home .steps{
  list-style:none;
  counter-reset:step;
  margin:0 0 clamp(26px,3vw,38px);
  padding:0;
  display:grid;
  gap:14px;
}
.page-home .steps__item{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:14px;
  align-items:start;
  font-size:15px;
  line-height:1.72;
  color:var(--graphite-soft);
}
.page-home .steps__item::before{
  counter-increment:step;
  content:counter(step,decimal-leading-zero);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--graphite);
  border:1px solid var(--gold);
  padding:3px 7px;
  line-height:1.4;
}
.page-home .qa{
  margin:0 0 clamp(26px,3vw,38px);
  display:grid;
  gap:18px;
}
.page-home .qa__q{
  margin:0 0 6px;
  font-size:16px;
  font-weight:700;
  line-height:1.5;
  color:var(--graphite);
}
.page-home .qa__a{
  margin:0;
  font-size:14.5px;
  line-height:1.78;
  color:var(--graphite-soft);
}
.page-home .qa__a a{
  color:var(--graphite);
  text-decoration:none;
  border-bottom:1px solid var(--gold);
}
.page-home .qa__a a:hover{color:var(--cinnabar);border-bottom-color:var(--cinnabar);}

.page-home .contact-strip{
  display:flex;
  flex-wrap:wrap;
  gap:16px 22px;
  align-items:center;
  justify-content:space-between;
  padding:22px clamp(20px,2.6vw,30px);
  background:var(--ink-2);
  color:var(--paper);
  border-left:3px solid var(--gold);
}
.page-home .contact-strip__text{
  display:flex;
  flex-direction:column;
  gap:6px;
  min-width:0;
}
.page-home .contact-strip__label{font-size:13px;line-height:1.6;color:var(--muted);}
.page-home .contact-strip__mail{
  font-family:var(--font-mono);
  font-size:clamp(13px,1.4vw,15px);
  letter-spacing:.04em;
  color:var(--gold-lift);
  word-break:break-all;
}
.page-home .contact-strip__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
}
.page-home .copy-status{font-size:12.5px;}
.page-home .copy-status:not(:empty){
  display:inline-block;
  padding:4px 10px;
  background:var(--jade);
  color:var(--paper);
  letter-spacing:.04em;
}

/* ---------- 断点 ---------- */
@media (min-width:640px){
  .page-home .adj-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-home .speed-stats{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (min-width:900px){
  .page-home .collage{grid-template-columns:2fr 1fr 1fr;}
  .page-home .collage__lead{min-height:clamp(420px,58vh,620px);}
  .page-home .compare{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-home .speed{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);}
  .page-home .next{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);}
}
@media (min-width:1040px){
  .page-home .adj-grid{grid-template-columns:repeat(4,minmax(0,1fr));}
  .page-home .speed-stats{grid-template-columns:repeat(4,minmax(0,1fr));}
}
@media (max-width:639px){
  .page-home .contact-strip{flex-direction:column;align-items:flex-start;}
  .page-home .contact-strip__actions{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  .page-home *{transition:none !important;}
  .page-home .collage__tile:hover,
  .page-home .collage__tile:focus-visible,
  .page-home .adj-grid .num-card:hover,
  .page-home .adj-grid .num-card:focus-visible{transform:none;}
}