:root{
  --ink:#17140F;
  --ink-2:#241E15;
  --org:#FE874A;
  --org-d:#C95818;
  --yel:#FFD433;
  --lime:#B4E62A;
  --paper:#FFF6E0;
  --paper-2:#FFFDF4;
  --muted:#6B5F4A;
  --rule:#17140F;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--ink);background:var(--paper-2);line-height:1.85;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.3;font-weight:900}
.wrap{width:100%;max-width:1100px;margin:0 auto;padding:0 26px}

/* ============ 顶栏：粗黑描边 ============ */
.top{
  position:sticky;top:0;z-index:90;background:var(--paper-2);
  border-bottom:3px solid var(--ink);
}
.top.on{box-shadow:0 6px 0 rgba(23,20,15,.12)}
.top-in{display:flex;align-items:center;height:72px;gap:18px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand img{width:38px;height:38px;border:2.5px solid var(--ink);border-radius:8px;transform:rotate(-3deg);box-shadow:2px 2px 0 var(--ink)}
.brand-t b{display:block;font-size:18px;letter-spacing:1px;line-height:1.2}
.brand-t small{display:block;font-size:10px;letter-spacing:1.2px;color:var(--muted);margin-top:3px;font-weight:700}
.nav{display:flex;gap:6px;margin-left:auto;font-size:13px;font-weight:800}
.nav a{position:relative;padding:6px 10px;border:2px solid transparent;border-radius:4px}
.nav a:hover{background:var(--yel);border-color:var(--ink);box-shadow:2px 2px 0 var(--ink)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;color:var(--ink);padding:4px}
.cta{
  flex:none;background:var(--org);color:#fff;font-size:12.5px;font-weight:900;letter-spacing:.6px;
  padding:10px 20px;border:2.5px solid var(--ink);border-radius:6px;
  box-shadow:3px 3px 0 var(--ink);
}
.cta:hover{background:var(--org-d);transform:translate(1px,1px);box-shadow:2px 2px 0 var(--ink)}

/* ============ 英雄区：明黄撞草绿 ============ */
.hero{
  position:relative;overflow:hidden;padding:64px 0 62px;color:var(--ink);
  background:
    radial-gradient(rgba(23,20,15,.13) 1.4px,transparent 1.5px) 0 0/11px 11px,
    linear-gradient(112deg,var(--yel) 0 52%,var(--lime) 52% 100%);
}
.hero::before{
  content:"";position:absolute;right:-150px;top:-130px;width:470px;height:470px;border-radius:50%;
  background:radial-gradient(var(--org) 2.6px,transparent 2.8px) 0 0/14px 14px;opacity:.85;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:-70px;bottom:-190px;width:420px;height:420px;border:14px solid rgba(23,20,15,.07);
  border-radius:50%;pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:46px;align-items:center;position:relative;z-index:1}
.kick{
  display:inline-block;background:var(--paper-2);border:2.5px solid var(--ink);border-radius:4px;
  padding:4px 12px;font-size:11px;font-weight:900;letter-spacing:1.4px;
  transform:rotate(-2deg);box-shadow:3px 3px 0 var(--ink);margin-bottom:18px;
}
.hero h1{
  font-size:72px;letter-spacing:2px;line-height:1.06;margin-bottom:14px;color:#fff;font-weight:900;
  -webkit-text-stroke:3px var(--ink);paint-order:stroke fill;
  text-shadow:6px 6px 0 var(--org),9px 9px 0 rgba(23,20,15,.22);
}
.hero h1 span{color:var(--yel)}
.hero .lead{font-size:19px;font-weight:900;margin-bottom:14px;letter-spacing:.5px}
.hero .desc{
  position:relative;font-size:14.6px;font-weight:600;color:#3C3323;max-width:548px;
  background:var(--paper-2);border:2.5px solid var(--ink);border-radius:14px;
  padding:15px 18px;line-height:1.95;box-shadow:5px 5px 0 var(--ink);margin-bottom:28px;
}
.hero .desc::after{
  content:"";position:absolute;left:30px;bottom:-11px;width:18px;height:18px;
  background:var(--paper-2);border-right:2.5px solid var(--ink);border-bottom:2.5px solid var(--ink);
  transform:rotate(45deg);
}
.acts{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.btn{
  display:inline-flex;align-items:center;gap:8px;background:var(--org);color:#fff;
  padding:13px 28px;border:2.5px solid var(--ink);border-radius:8px;font-weight:900;font-size:15px;
  box-shadow:4px 4px 0 var(--ink);
}
.btn svg{width:17px;height:17px}
.btn:hover{background:var(--org-d);transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}
.ghost{
  display:inline-flex;align-items:center;padding:12px 20px;border:2.5px solid var(--ink);border-radius:8px;
  background:var(--paper-2);font-size:13.5px;font-weight:900;box-shadow:3px 3px 0 var(--ink);
}
.ghost:hover{background:var(--lime);transform:translate(2px,2px);box-shadow:1px 1px 0 var(--ink)}
.facts{display:flex;flex-wrap:wrap;gap:0;margin-top:32px;padding-top:18px;border-top:2.5px dashed rgba(23,20,15,.4)}
.facts div{padding:0 18px;border-left:2.5px dashed rgba(23,20,15,.32)}
.facts div:first-child{padding-left:0;border-left:0}
.facts b{display:block;font-size:12.5px;font-weight:900;letter-spacing:.6px}
.facts span{display:block;font-size:11px;color:#5C5138;margin-top:2px;font-weight:600}

/* 胶片叠放 */
.album{position:relative;height:490px;z-index:1}
.pg{
  position:absolute;background:#fff;padding:7px;margin:0;
  border:3px solid var(--ink);border-radius:6px;box-shadow:8px 8px 0 rgba(23,20,15,.92);
}
.pg img{width:100%;height:100%;object-fit:cover;border-radius:2px}
.p1{left:0;top:8%;width:51%;height:61%;transform:rotate(-4.2deg);z-index:2}
.p2{left:26%;top:0;width:47%;height:57%;transform:rotate(3deg);z-index:3}
.p3{right:1%;bottom:2%;width:44%;height:55%;transform:rotate(-1.6deg);z-index:4}
.stk{
  position:absolute;z-index:6;font-size:11.5px;font-weight:900;letter-spacing:1px;
  border:2.5px solid var(--ink);border-radius:4px;padding:3px 11px;box-shadow:3px 3px 0 var(--ink);
}
.s1{left:-16px;top:1%;transform:rotate(-9deg);background:var(--lime)}
.s2{right:4%;bottom:-2%;transform:rotate(5deg);background:var(--yel)}
.burst{
  position:absolute;left:-10px;bottom:6%;z-index:6;width:66px;height:66px;border-radius:50%;
  background:var(--org);border:3px solid var(--ink);color:#fff;font-size:12px;font-weight:900;
  display:grid;place-items:center;transform:rotate(-12deg);box-shadow:4px 4px 0 var(--ink);letter-spacing:.5px;
}

/* ============ 通用区块 ============ */
.sec{padding:70px 0;background:var(--paper-2)}
.band{
  background-color:var(--paper);
  background-image:radial-gradient(rgba(23,20,15,.13) 1.3px,transparent 1.4px);
  background-size:10px 10px;border-top:3px solid var(--ink);border-bottom:3px solid var(--ink);
}
.hd2{display:grid;grid-template-columns:96px 1fr;gap:18px;align-items:start;margin-bottom:34px}
.hd2 .no{
  display:inline-block;background:var(--lime);border:2.5px solid var(--ink);border-radius:4px;
  padding:3px 9px;font-size:11px;font-weight:900;letter-spacing:.5px;white-space:nowrap;
  transform:rotate(-4deg);box-shadow:3px 3px 0 var(--ink);
}
.hd2 h2{font-size:33px;letter-spacing:2px;margin-bottom:7px}
.hd2 h2::after{content:"";display:block;width:58px;height:6px;background:var(--org);margin-top:9px;transform:rotate(-1.2deg)}
.hd2 p{font-size:14.4px;color:var(--muted);max-width:820px;font-weight:600}

/* 特色：粗边卡片 */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  position:relative;background:#fff;border:2.5px solid var(--ink);border-radius:10px;
  padding:26px 20px 24px;box-shadow:6px 6px 0 var(--ink);
  transition:transform .18s ease,box-shadow .18s ease;
}
.card .n{
  position:absolute;right:14px;top:-14px;background:var(--yel);border:2.5px solid var(--ink);
  border-radius:4px;padding:1px 9px;font-size:11px;font-weight:900;letter-spacing:1px;
  transform:rotate(5deg);box-shadow:2px 2px 0 var(--ink);
}
.card h4{font-size:18px;letter-spacing:.8px;margin-bottom:8px}
.card p{font-size:13.4px;color:#4C4231;line-height:1.92;font-weight:500}
.card:hover{transform:translate(-3px,-3px);box-shadow:9px 9px 0 var(--ink)}
.card:nth-child(2) .n,.card:nth-child(5) .n{background:var(--lime)}
.card:nth-child(3) .n,.card:nth-child(6) .n{background:var(--org);color:#fff}

/* 界面：一大 + 三小 */
.spread{display:grid;grid-template-columns:1.08fr .92fr;gap:24px;align-items:start}
.spread figure{margin:0;background:#fff;border:2.5px solid var(--ink);border-radius:10px;box-shadow:6px 6px 0 var(--ink)}
.big{padding:10px}
.big img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:4px}
.big figcaption{font-size:12.8px;font-weight:900;letter-spacing:.6px;padding:10px 4px 2px}
.strip{display:grid;gap:18px}
.strip figure{display:grid;grid-template-columns:92px 1fr;gap:14px;align-items:center;padding:10px}
.strip img{width:92px;height:122px;object-fit:cover;border:2px solid var(--ink);border-radius:4px}
.strip figcaption{font-size:13.4px;font-weight:800;letter-spacing:.4px}

/* 指南：五步 */
.steps{list-style:none;position:relative;margin-top:6px;padding-left:0;max-width:900px}
.steps::before{
  content:"";position:absolute;left:21px;top:12px;bottom:20px;width:3px;
  background:repeating-linear-gradient(180deg,var(--ink) 0 9px,transparent 9px 17px);
}
.steps li{position:relative;padding:0 0 24px 64px;font-size:14.2px;color:#3E3526;line-height:1.92;font-weight:600}
.steps li:last-child{padding-bottom:4px}
.steps b{
  position:absolute;left:0;top:-2px;width:44px;height:44px;border-radius:6px;
  background:var(--org);color:#fff;border:2.5px solid var(--ink);box-shadow:3px 3px 0 var(--ink);
  display:grid;place-items:center;font-size:12.5px;font-weight:900;transform:rotate(-4deg);
}
.steps li:nth-child(even) b{background:var(--yel);color:var(--ink);transform:rotate(3deg)}
.gnote{
  margin-top:18px;max-width:900px;border:2.5px solid var(--ink);border-radius:8px;
  background:var(--lime);padding:13px 17px;font-size:13px;color:#2B2913;font-weight:700;
  box-shadow:4px 4px 0 var(--ink);
}

/* 答疑：粗边条目 */
.qa{display:grid;gap:14px}
.qa-item{
  display:grid;grid-template-columns:56px 1fr;gap:16px;align-items:start;
  background:#fff;border:2.5px solid var(--ink);border-radius:10px;
  padding:18px 20px;box-shadow:5px 5px 0 var(--ink);
}
.qa-item .qn{
  background:var(--yel);border:2.5px solid var(--ink);border-radius:4px;padding:1px 0;
  font-size:11.5px;font-weight:900;text-align:center;transform:rotate(-4deg);
  box-shadow:2px 2px 0 var(--ink);
}
.qa-item h3{font-size:16.5px;letter-spacing:.6px;margin-bottom:6px}
.qa-item p{font-size:13.8px;color:#4C4231;line-height:1.9;font-weight:500}

/* 评价：对话框 */
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.rev-card{
  position:relative;background:#fff;border:2.5px solid var(--ink);border-radius:14px;
  padding:26px 20px 16px;box-shadow:6px 6px 0 var(--ink);margin-bottom:14px;
}
.rev-card::before{
  content:"\201C";position:absolute;top:-6px;right:14px;font-family:Georgia,serif;
  font-size:64px;line-height:1;color:rgba(254,135,74,.35);
}
.rev-card::after{
  content:"";position:absolute;left:28px;bottom:-13px;width:20px;height:20px;background:#fff;
  border-right:2.5px solid var(--ink);border-bottom:2.5px solid var(--ink);transform:rotate(45deg);
}
.rev-card:nth-child(2){transform:rotate(-1deg)}
.rev-card:nth-child(2)::before{color:rgba(180,230,42,.75)}
.rev-card:nth-child(3){transform:rotate(1deg)}
.rev-card blockquote{position:relative;z-index:1;font-size:13.4px;color:#3E3526;line-height:1.95;font-weight:600}
.rev-card .who{
  display:flex;align-items:center;gap:8px;margin-top:14px;padding-top:10px;
  border-top:2px dashed rgba(23,20,15,.28);font-size:10.8px;color:var(--muted);font-weight:700;
}
.rev-card .who i{
  width:24px;height:24px;border:2px solid var(--ink);border-radius:6px;background:var(--org);
  color:#fff;font-style:normal;font-size:10.5px;font-weight:900;display:grid;place-items:center;
}
.rev-card .who time{font-family:"SFMono-Regular",Consolas,monospace;letter-spacing:0}

/* ============ 下载：墨底网点 ============ */
.get{
  position:relative;overflow:hidden;padding:66px 0 70px;color:var(--paper);text-align:center;
  background:
    radial-gradient(rgba(180,230,42,.22) 1.6px,transparent 1.7px) 0 0/13px 13px,
    var(--ink);
  border-top:3px solid var(--ink);
}
.get::before{
  content:"";position:absolute;left:50%;top:-190px;width:540px;height:540px;margin-left:-270px;border-radius:50%;
  background:radial-gradient(rgba(255,212,51,.2) 2.4px,transparent 2.6px) 0 0/15px 15px;pointer-events:none;
}
.get-in{position:relative;z-index:1}
.dlogo{display:flex;align-items:center;justify-content:center;gap:11px;margin-bottom:14px}
.dlogo img{width:46px;height:46px;border:2.5px solid var(--yel);border-radius:8px;transform:rotate(-3deg)}
.dlogo em{font-style:normal;font-size:10px;letter-spacing:3px;color:rgba(255,212,51,.75);font-weight:700}
.get h2{font-size:36px;letter-spacing:2px;margin-bottom:12px;color:#fff;text-shadow:4px 4px 0 rgba(254,135,74,.55)}
.get h2 em{font-style:normal;color:var(--yel)}
.get p{font-size:13.9px;color:rgba(255,246,224,.78);max-width:660px;margin:0 auto 20px;line-height:1.95;font-weight:500}
.dm{display:flex;gap:9px;flex-wrap:wrap;justify-content:center;margin-bottom:26px}
.dm span{
  font-size:11px;border:2px solid rgba(255,212,51,.55);border-radius:999px;
  padding:3px 12px;color:var(--yel);font-weight:700;
}
.get .btn{box-shadow:4px 4px 0 rgba(180,230,42,.9)}

/* ============ 页脚 ============ */
.ft{background:#100E0A;color:rgba(255,246,224,.62);padding:36px 0 26px;font-size:12.2px;border-top:5px solid var(--lime)}
.ft-in{display:flex;flex-wrap:wrap;gap:10px 26px;align-items:flex-start;justify-content:space-between}
.ft-brand{display:flex;align-items:center;gap:9px;color:#fff;font-weight:900;font-size:13.5px;letter-spacing:1.2px}
.ft-brand img{width:26px;height:26px;border:2px solid var(--yel);border-radius:5px}
.ft p{max-width:520px;line-height:1.9;color:rgba(255,246,224,.6)}
.ft-links{display:flex;gap:16px;flex-wrap:wrap;font-size:11.8px;font-weight:700}
.ft-links a:hover{color:var(--yel)}
.ft-copy{width:100%;border-top:2px dashed rgba(255,246,224,.2);padding-top:13px;font-size:11px;color:rgba(255,246,224,.45);line-height:1.9}

/* ============ 返回顶部 ============ */
.backtop{
  position:fixed;right:24px;bottom:88px;z-index:70;width:44px;height:44px;border-radius:8px;
  background:var(--yel);border:2.5px solid var(--ink);color:var(--ink);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:3px 3px 0 var(--ink);
  opacity:0;visibility:hidden;transition:opacity .2s ease;
}
.backtop.on{opacity:1;visibility:visible}
.backtop:hover{background:var(--org);color:#fff}

/* ============ 响应式 960 ============ */
@media (max-width:960px){
  .nav{
    display:none;position:absolute;top:72px;left:0;right:0;margin-left:0;
    background:var(--paper-2);border-bottom:3px solid var(--ink);
    flex-direction:column;gap:4px;padding:10px 26px 14px;
  }
  .nav.open{display:flex}
  .nav a{padding:9px 10px;border-bottom:2px dashed rgba(23,20,15,.25);border-radius:0}
  .nav a:hover{box-shadow:none;border-color:transparent;background:var(--yel)}
  .nav-toggle{display:block;margin-left:auto}
  .cta{padding:9px 14px;font-size:11.5px}
  .hero{padding:46px 0 50px}
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .hero h1{font-size:58px}
  .hero .desc{max-width:none}
  .album{max-width:470px;width:100%;height:442px;margin:0 auto}
  .feat-grid{grid-template-columns:1fr 1fr}
  .spread{grid-template-columns:1fr}
  .strip{grid-template-columns:repeat(3,1fr)}
  .strip figure{display:block;padding:9px}
  .strip img{width:100%;height:auto;aspect-ratio:3/4}
  .strip figcaption{display:block;padding-top:8px;font-size:12.4px}
  .rev-grid{grid-template-columns:1fr 1fr}
  .rev-card:nth-child(3){grid-column:1 / -1}
}

/* ============ 响应式 600 ============ */
@media (max-width:600px){
  body{font-size:15px}
  .wrap{padding:0 18px}
  .top-in{height:64px;gap:10px}
  .brand img{width:33px;height:33px}
  .brand-t b{font-size:16px;letter-spacing:.6px}
  .brand-t small{font-size:9px;letter-spacing:.8px}
  .nav{top:64px;padding:8px 18px 12px}
  .cta{padding:8px 11px;font-size:10.8px}
  .hero{padding:34px 0 40px}
  .hero h1{font-size:42px;letter-spacing:1px;text-shadow:4px 4px 0 var(--org),6px 6px 0 rgba(23,20,15,.22)}
  .hero .lead{font-size:16.5px}
  .hero .desc{font-size:13.6px;padding:13px 15px}
  .hero::before{width:300px;height:300px;right:-120px;top:-90px}
  .facts div{padding:0 11px}
  .facts b{font-size:11.5px}
  .facts span{font-size:10px}
  .album{height:356px;max-width:340px}
  .burst{width:54px;height:54px;font-size:10.5px;left:-6px}
  .s1{left:-8px}
  .s2{right:0}
  .sec{padding:44px 0}
  .hd2{grid-template-columns:1fr;gap:10px;margin-bottom:24px}
  .hd2 h2{font-size:25px;letter-spacing:1.2px}
  .hd2 p{font-size:13.4px}
  .feat-grid{grid-template-columns:1fr;gap:22px}
  .card{padding:24px 17px 20px}
  .strip{grid-template-columns:1fr}
  .strip figure{grid-template-columns:80px 1fr;display:grid;padding:9px}
  .strip img{width:80px;height:106px}
  .steps li{padding-left:56px;font-size:13.6px}
  .steps::before{left:18px}
  .steps b{width:38px;height:38px;font-size:11.5px}
  .qa-item{grid-template-columns:42px 1fr;gap:11px;padding:15px 14px}
  .qa-item h3{font-size:15.5px}
  .rev-grid{grid-template-columns:1fr}
  .rev-card:nth-child(3){grid-column:auto}
  .rev-card:nth-child(2),.rev-card:nth-child(3){transform:none}
  .get{padding:46px 0 50px}
  .get::before{width:340px;height:340px;margin-left:-170px}
  .get h2{font-size:26px;letter-spacing:1.4px}
  .dm span{font-size:10.4px;padding:2px 10px}
  .ft-in{flex-direction:column}
  .backtop{right:14px;bottom:74px;width:40px;height:40px}
}