/* 爱思助手 方案二 · 深色编辑杂志 / Editorial Dark
   配色: 深炭底 + 奶白 + 越南红 + 古铜金
   关键词布局: Cover / Long Read / Picks / Figures / Voices
*/

:root{
  --bg:#14110f;
  --bg-2:#1c1916;
  --bg-3:#25211d;
  --paper:#f5efe3;
  --paper-2:#d6cdb8;
  --ink:#f5efe3;
  --ink-soft:#9c9485;
  --red:#c8423c;
  --gold:#c9a861;
  --line:rgba(245,239,227,.12);
  --line-strong:rgba(245,239,227,.28);
  --max:1240px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:"Inter","PingFang SC","Helvetica Neue",system-ui,sans-serif;
  font-size:17px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
em{font-family:"Cormorant Garamond","Source Han Serif SC",Georgia,serif;font-style:italic}

/* ===== Topbar ===== */
.topbar{
  position:sticky;
  top:0;
  z-index:30;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:20px 36px;
  background:rgba(20,17,15,.85);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.brand{
  display:flex;
  align-items:baseline;
  gap:10px;
  letter-spacing:.12em;
}
.brand img{width:34px;height:34px;border-radius:6px;align-self:center}
.brand span{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-size:24px;
  font-weight:600;
  letter-spacing:.18em;
}
.brand small{
  font-size:11px;
  color:var(--gold);
  letter-spacing:.22em;
  text-transform:uppercase;
  margin-left:4px;
}
nav{display:flex;align-items:center;gap:28px;font-size:13px;letter-spacing:.14em;text-transform:uppercase;font-weight:500}
nav a{color:var(--paper-2);transition:.2s}
nav a:hover{color:var(--gold)}
.nav-cta{
  background:var(--red);
  color:#fff !important;
  padding:11px 22px;
  letter-spacing:.16em;
  font-weight:600;
}
.nav-cta:hover{background:var(--gold);color:var(--bg)}

/* ===== Cover ===== */
.cover{
  max-width:var(--max);
  margin:0 auto;
  padding:80px 36px 100px;
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:64px;
  align-items:center;
}
.kicker{
  font-size:11px;
  letter-spacing:.32em;
  color:var(--gold);
  text-transform:uppercase;
  margin-bottom:24px;
}
.cover-text h1{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-size:clamp(48px,6vw,86px);
  font-weight:500;
  line-height:1.02;
  letter-spacing:-.01em;
  color:var(--ink);
}
.cover-text h1 em{
  color:var(--red);
  font-weight:500;
}
.deck{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-style:italic;
  font-size:22px;
  color:var(--paper-2);
  margin:28px 0;
  line-height:1.4;
  max-width:560px;
}
.cover-meta{
  display:flex;
  gap:14px;
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--ink-soft);
  padding:18px 0;
  border-top:1px solid var(--line-strong);
  border-bottom:1px solid var(--line-strong);
  margin-bottom:32px;
}
.cover-cta{
  display:inline-block;
  background:var(--gold);
  color:var(--bg);
  padding:18px 34px;
  font-size:13px;
  letter-spacing:.22em;
  font-weight:700;
  text-transform:uppercase;
  transition:.25s;
}
.cover-cta:hover{background:var(--red);color:#fff;transform:translateY(-2px)}

.cover-img{position:relative}
.cover-img img{
  width:100%;
  border-radius:0;
  border:1px solid var(--line-strong);
  aspect-ratio:4/5;
  object-fit:cover;
}
.cover-img figcaption{
  margin-top:14px;
  font-size:12px;
  color:var(--ink-soft);
  letter-spacing:.18em;
  text-transform:uppercase;
}

/* ===== Report ===== */
.report{max-width:var(--max);margin:0 auto;padding:80px 36px}
.report-head{display:flex;align-items:center;gap:18px;margin-bottom:36px}
.report-head p{font-size:11px;letter-spacing:.32em;color:var(--gold);text-transform:uppercase}
.rule{flex:1;height:1px;background:var(--line-strong)}

.report-title{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-size:clamp(34px,4vw,52px);
  font-weight:500;
  line-height:1.1;
  letter-spacing:-.01em;
  margin-bottom:30px;
  color:var(--paper);
}
.report-title em{color:var(--red)}
.report-lead{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-style:italic;
  font-size:22px;
  color:var(--paper-2);
  line-height:1.45;
  max-width:760px;
  margin-bottom:60px;
}

.report-row{
  display:grid;
  grid-template-columns:160px 1fr;
  gap:48px;
  padding:42px 0;
  border-top:1px solid var(--line);
}
.report-row.flip{grid-template-columns:1fr 160px}
.report-row.flip > div{order:2}
.report-row.flip .chap{order:1;text-align:right}
.chap{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-size:48px;
  font-weight:500;
  font-style:italic;
  color:var(--red);
  line-height:1;
}
.report-row h3{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-size:30px;
  font-weight:500;
  margin-bottom:14px;
  letter-spacing:-.01em;
}
.report-row p{font-size:16.5px;color:var(--paper-2)}
.report-row p em{color:var(--gold)}

/* ===== Picks ===== */
.picks{background:var(--bg-2);padding:100px 0}
.picks-head{max-width:var(--max);margin:0 auto 60px;padding:0 36px}
.picks-head p{font-size:11px;letter-spacing:.32em;color:var(--gold);text-transform:uppercase;margin-bottom:14px}
.picks-head h2{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-size:clamp(38px,4.4vw,60px);
  font-weight:500;
  line-height:1.05;
  letter-spacing:-.01em;
}
.picks-head h2 em{color:var(--red)}
.picks-grid{
  max-width:var(--max);
  margin:0 auto;
  padding:0 36px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-top:1px solid var(--line-strong);
  border-left:1px solid var(--line-strong);
}
.pick{
  padding:38px 30px;
  border-right:1px solid var(--line-strong);
  border-bottom:1px solid var(--line-strong);
  transition:.25s;
}
.pick:hover{background:var(--bg-3)}
.pick:hover .pick-no{color:var(--red)}
.pick-no{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-style:italic;
  font-size:24px;
  color:var(--gold);
  display:block;
  margin-bottom:18px;
}
.pick h3{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-size:32px;
  font-weight:500;
  line-height:1.05;
  margin-bottom:18px;
}
.pick p{font-size:14.5px;color:var(--paper-2);line-height:1.65}

/* ===== Figures ===== */
.figures{max-width:var(--max);margin:0 auto;padding:100px 36px}
.fig-head{margin-bottom:48px}
.fig-head p{font-size:11px;letter-spacing:.32em;color:var(--gold);text-transform:uppercase;margin-bottom:14px}
.fig-head h2{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-size:clamp(38px,4.4vw,60px);
  font-weight:500;
  line-height:1.05;
}
.fig-head h2 em{color:var(--red)}
.fig-list{list-style:none;border-top:4px double var(--line-strong)}
.fig-list li{
  display:grid;
  grid-template-columns:80px 1fr 1.4fr;
  gap:32px;
  align-items:center;
  padding:36px 0;
  border-bottom:1px solid var(--line);
  transition:.2s;
}
.fig-list li:hover{background:var(--bg-2);padding-left:18px}
.fig-no{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-style:italic;
  font-size:18px;
  color:var(--gold);
  letter-spacing:.16em;
}
.fig-val{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-size:clamp(48px,5.4vw,82px);
  color:var(--red);
  font-weight:500;
  line-height:1;
  letter-spacing:-.02em;
}
.fig-desc{font-size:16px;color:var(--paper-2);line-height:1.55}

/* ===== Voices ===== */
.voices{padding:0 36px 100px;max-width:var(--max);margin:0 auto}
.big-quote{
  text-align:center;
  padding:80px 0;
  border-top:1px solid var(--line-strong);
  border-bottom:1px solid var(--line-strong);
  margin-bottom:60px;
}
.big-quote p{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-style:italic;
  font-size:clamp(36px,4.6vw,68px);
  line-height:1.15;
  color:var(--paper);
  font-weight:500;
}
.big-quote em{color:var(--red)}
.big-quote cite{
  display:block;
  margin-top:28px;
  font-style:normal;
  font-size:12px;
  letter-spacing:.22em;
  color:var(--gold);
  text-transform:uppercase;
}
.voices-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0;
  border:1px solid var(--line-strong);
}
.voice{
  padding:48px;
  border-right:1px solid var(--line-strong);
}
.voice.flip{border-right:none;background:var(--bg-2)}
.voice p{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-style:italic;
  font-size:24px;
  line-height:1.4;
  color:var(--paper);
  margin-bottom:24px;
}
.voice cite{
  font-style:normal;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--gold);
  text-transform:uppercase;
}

/* ===== Footer ===== */
.foot{border-top:4px double var(--line-strong);padding:36px 0}
.foot-inner{max-width:var(--max);margin:0 auto;padding:0 36px;display:flex;justify-content:space-between;align-items:center}
.foot img{width:32px;height:32px;border-radius:6px;display:inline-block;vertical-align:middle}
.foot b{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-size:22px;
  font-weight:600;
  letter-spacing:.18em;
  margin-left:10px;
}
.foot p{font-size:12px;letter-spacing:.18em;color:var(--ink-soft);margin-top:6px}
.foot-right{display:flex;align-items:center;gap:20px;font-size:13px;letter-spacing:.14em;color:var(--paper-2)}
.foot-right a:hover{color:var(--gold)}

/* ===== 下载页 (download.html) ===== */
.dl-cover{max-width:var(--max);margin:0 auto;padding:60px 36px 30px;text-align:center}
.dl-cover .kicker{margin-bottom:18px}
.dl-cover h1{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-size:clamp(50px,6vw,82px);
  font-weight:500;
  line-height:1.05;
  letter-spacing:-.01em;
  margin-bottom:20px;
}
.dl-cover h1 em{color:var(--red)}
.dl-cover .deck{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-style:italic;
  font-size:20px;
  color:var(--paper-2);
  max-width:680px;
  margin:0 auto 36px;
}
.dl-cover-img{max-width:580px;width:100%;margin:0 auto;border:1px solid var(--line-strong)}
.dl-platforms{
  max-width:var(--max);
  margin:0 auto;
  padding:60px 36px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
  border-top:4px double var(--line-strong);
  border-bottom:4px double var(--line-strong);
}
.dl-pf{text-align:center;padding:30px 18px;border-right:1px solid var(--line)}
.dl-pf:last-child{border-right:none}
.dl-pf .pf-name{
  display:inline-block;
  font-size:10px;
  letter-spacing:.32em;
  color:var(--gold);
  text-transform:uppercase;
  margin-bottom:12px;
}
.dl-pf h3{font-family:"Cormorant Garamond",Georgia,serif;font-size:30px;font-weight:500;margin-bottom:10px}
.dl-pf .pf-meta{font-size:13px;color:var(--ink-soft);margin-bottom:22px}
.dl-pf-btn{
  display:inline-block;
  background:transparent;
  color:var(--paper);
  border:1px solid var(--gold);
  padding:12px 22px;
  font-size:12px;
  letter-spacing:.22em;
  font-weight:600;
  text-transform:uppercase;
  transition:.25s;
}
.dl-pf-btn:hover{background:var(--gold);color:var(--bg)}

.dl-steps{max-width:880px;margin:0 auto;padding:80px 36px}
.dl-steps h2{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-size:48px;
  font-weight:500;
  line-height:1.1;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.dl-steps h2 em{color:var(--red)}
.dl-steps .deck{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-style:italic;
  font-size:19px;
  color:var(--paper-2);
  margin-bottom:40px;
}
.dl-step{
  display:grid;
  grid-template-columns:90px 1fr;
  gap:28px;
  padding:30px 0;
  border-top:1px solid var(--line);
  align-items:start;
}
.dl-step:last-child{border-bottom:1px solid var(--line)}
.dl-step .sn{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-style:italic;
  font-size:48px;
  color:var(--red);
  line-height:1;
}
.dl-step h4{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-size:26px;
  font-weight:500;
  margin-bottom:8px;
}
.dl-step p{color:var(--paper-2);font-size:16px}

.dl-req{background:var(--bg-2);padding:80px 36px}
.dl-req-inner{max-width:var(--max);margin:0 auto}
.dl-req h2{
  font-family:"Cormorant Garamond",Georgia,serif;
  font-size:48px;
  font-weight:500;
  margin-bottom:14px;
}
.dl-req h2 em{color:var(--gold)}
.req-table{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--line-strong)}
.req-row{
  padding:28px 0;
  border-bottom:1px solid var(--line-strong);
  display:grid;
  grid-template-columns:auto 1fr;
  gap:18px;
  align-items:start;
  font-size:15.5px;
}
.req-row b{
  display:block;
  font-size:11px;
  letter-spacing:.28em;
  color:var(--gold);
  text-transform:uppercase;
}
.req-row span{color:var(--paper-2)}

/* ===== 响应式 ===== */
@media (max-width:980px){
  .topbar{padding:16px 22px;flex-wrap:wrap;gap:14px}
  nav{gap:18px;font-size:12px}
  .brand small{display:none}
  .cover{grid-template-columns:1fr;gap:36px;padding:50px 22px 70px}
  .report-row,.report-row.flip{grid-template-columns:1fr;gap:14px}
  .report-row.flip > div,.report-row.flip .chap{order:0;text-align:left}
  .picks-grid,.voices-grid,.dl-platforms,.req-table{grid-template-columns:1fr 1fr}
  .dl-pf,.voice{border-right:none}
  .fig-list li{grid-template-columns:60px 1fr;gap:18px}
  .fig-list li .fig-desc{grid-column:2}
  .foot-inner{flex-direction:column;gap:18px;align-items:flex-start}
}
@media (max-width:560px){
  body{font-size:15px}
  nav a:not(.nav-cta){display:none}
  .cover-text h1{font-size:42px}
  .picks-grid,.voices-grid,.dl-platforms,.req-table{grid-template-columns:1fr}
  .big-quote p{font-size:30px}
  .fig-val{font-size:54px}
  .dl-cover h1,.dl-steps h2,.dl-req h2{font-size:36px}
}

/* ===== Floating Download Button · 全局 FAB ===== */
.dl-fab{
  position:fixed;
  right:28px;
  bottom:28px;
  z-index:50;
  display:flex;
  align-items:center;
  gap:10px;
  padding:14px 22px 14px 16px;
  background:var(--paper);
  color:var(--bg);
  border:1px solid var(--line-strong);
  border-radius:99px;
  font-family:"Inter","Helvetica Neue",sans-serif;
  font-size:13px;
  font-weight:800;
  letter-spacing:.22em;
  text-transform:uppercase;
  box-shadow:0 18px 50px -10px rgba(0,0,0,.5);
  transition:.25s;
  text-decoration:none;
}
.dl-fab:hover{
  background:var(--gold);
  border-color:var(--gold);
  transform:translateY(-3px);
  box-shadow:0 24px 60px -10px rgba(201,168,97,.5);
  color:var(--bg);
}
.dl-fab .fab-ico{
  width:36px;height:36px;
  display:flex;align-items:center;justify-content:center;
  background:var(--gold);
  color:var(--bg);
  border-radius:50%;
  font-size:18px;
  transition:.25s;
}
.dl-fab:hover .fab-ico{background:var(--bg);color:var(--gold)}
.dl-fab .fab-ico svg{width:16px;height:16px;display:block}
.dl-fab .fab-text{
  display:flex;flex-direction:column;line-height:1.1;
}
.dl-fab .fab-title{font-size:13px;letter-spacing:.18em}
.dl-fab .fab-sub{font-size:9px;letter-spacing:.32em;color:var(--gold);margin-top:3px;font-weight:700}
.dl-fab:hover .fab-sub{color:var(--red)}
@media (max-width:560px){
  .dl-fab{
    right:14px;bottom:14px;
    padding:10px 14px 10px 12px;
    gap:8px;
  }
  .dl-fab .fab-ico{width:32px;height:32px;font-size:15px}
  .dl-fab .fab-title{font-size:11px}
  .dl-fab .fab-sub{font-size:8px}
}