/* ============================================================
   Nodesign 官网 · 印刷厂纸样（letterpress proof）
   粗黑标题压在纸上 + 衬线正文 + 印刷标记 + 套印错位
   ============================================================ */

:root{
  --paper:#EDE4D1;
  --paper-2:#E3D8C0;
  --card:#F8F2E5;
  --ink:#1F1810;
  --ink-2:#5F5340;
  --ink-3:#8F8069;
  --rule:#C7B79A;
  --rule-soft:#D9CDB4;
  --red:#B23A2E;
  --gold:#C9A227;
  --cyan:#2E6B7A;
  --dark:#1A140E;
  --dark-2:#2E251B;
  --dark-ink:#F2EADB;
  --dark-ink-2:#B8A98E;
  --dark-ink-3:#7E6F58;

  --display:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue","Microsoft YaHei",sans-serif;
  --serif:"LXGW WenKai Screen","LXGW WenKai",霞鹜文楷,"Noto Serif SC",serif;
  --mono:ui-monospace,"SF Mono","Cascadia Mono",Menlo,"Noto Sans Mono CJK SC",monospace;

  --measure:36em;
  --maxw:1240px;
  --gut:40px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--serif);font-size:18px;line-height:1.9;letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
/* 纸：真纸纹照片 + 细颗粒 + 四周压暗 */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:url(paper-texture.webp) center / cover no-repeat;
  opacity:.5;
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.4'/%3E%3C/svg%3E"),
    radial-gradient(120% 55% at 50% 0%,rgba(255,250,238,.45),transparent 62%),
    radial-gradient(118% 112% at 50% 45%,transparent 54%,rgba(31,24,16,.10));
  mix-blend-mode:multiply;opacity:.55;
}
.wrap{position:relative;z-index:1}
/* 细点分栏线：贴着内容栏两侧，固定不动 */
.wrap::before{
  content:"";position:fixed;top:0;bottom:0;left:50%;transform:translateX(-50%);
  width:var(--maxw);pointer-events:none;z-index:0;opacity:.55;
  background-image:
    repeating-linear-gradient(to bottom,var(--rule) 0 4px,transparent 4px 13px),
    repeating-linear-gradient(to bottom,var(--rule) 0 4px,transparent 4px 13px);
  background-size:1px 100%,1px 100%;
  background-position:0 0,100% 0;background-repeat:no-repeat;
}
img{max-width:100%;display:block}
a{color:inherit}
:focus-visible{outline:2px solid var(--red);outline-offset:3px}

/* ---------- 印刷标记 ---------- */
.proof{position:fixed;inset:0;z-index:60;pointer-events:none}
.proof i{position:absolute;width:16px;height:16px;border:0 solid var(--ink-3);opacity:.5}
.proof i.tl{top:20px;left:20px;border-top-width:1px;border-left-width:1px}
.proof i.tr{top:20px;right:20px;border-top-width:1px;border-right-width:1px}
.proof i.bl{bottom:20px;left:20px;border-bottom-width:1px;border-left-width:1px}
.proof i.br{bottom:20px;right:20px;border-bottom-width:1px;border-right-width:1px}
.proof .bar{position:absolute;left:20px;bottom:48px;display:flex;gap:3px}
.proof .bar b{display:block;width:11px;height:11px}
.proof .bar b:nth-child(1){background:var(--cyan)}
.proof .bar b:nth-child(2){background:var(--red)}
.proof .bar b:nth-child(3){background:var(--gold)}
.proof .bar b:nth-child(4){background:var(--ink)}
.proof .tag{position:absolute;right:20px;bottom:48px;font-family:var(--mono);font-size:10px;
  letter-spacing:.2em;color:var(--ink-3);writing-mode:vertical-rl}

/* ---------- 容器 ---------- */
.col{max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}

/* ---------- 导航 ---------- */
.nav{position:sticky;top:0;z-index:40;background:rgba(237,228,209,.9);backdrop-filter:blur(10px);
     border-bottom:1px solid var(--ink)}
.nav-in{display:flex;align-items:center;gap:36px;padding:13px 0}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--display);
       font-weight:800;font-size:21px;letter-spacing:-.02em;text-decoration:none}
.brand-mark{display:grid;place-items:center;width:22px;height:22px;color:var(--ink)}
.brand-mark svg{width:100%;height:100%;display:block}
.brand-mark img{width:100%;height:100%;display:block;border-radius:5px}   /* 09-11 暂用 README 同款 N，正式图标另行设计 */
.nav-links{margin-left:auto;display:flex;gap:28px;font-family:var(--mono);font-size:13px;letter-spacing:.06em}
.nav-links a{color:var(--ink-2);text-decoration:none;transition:color .2s}
.nav-links a:hover{color:var(--ink)}
.nav-links a[aria-current="page"]{color:var(--ink);box-shadow:inset 0 -2px 0 var(--red)}

/* ---------- 按钮：印刷品是方的 ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;padding:12px 24px;border-radius:3px;
     font-family:var(--display);font-weight:600;font-size:15px;line-height:1;text-decoration:none;
     border:1px solid transparent;letter-spacing:.01em;
     transition:background .2s,border-color .2s,transform .25s var(--ease)}
.btn-solid{background:var(--ink);color:var(--paper)}
.btn-solid:hover{background:#3A2F20;transform:translateY(-1px)}
.btn-ghost{border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(31,24,16,.06);transform:translateY(-1px)}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}

/* ---------- 字 ---------- */
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.28em;color:var(--ink-3)}
h1,h2,h3{font-family:var(--display);font-weight:800}
h1{font-size:clamp(46px,6.4vw,86px);line-height:1.05;margin:26px 0 0;letter-spacing:-.028em;
   max-width:13em;text-wrap:balance;text-shadow:.028em .02em 0 rgba(178,58,46,.16)}
h2{font-size:clamp(30px,3.5vw,46px);line-height:1.14;margin:0;letter-spacing:-.022em;
   text-wrap:balance;text-shadow:.026em .018em 0 rgba(178,58,46,.14)}
h3{font-size:20px;line-height:1.45;margin:0;letter-spacing:-.01em}
.hero-sub{margin:30px 0 0;font-size:20px;line-height:1.8;color:var(--ink-2);max-width:27em}
.lead{margin:24px 0 0;font-size:19px;line-height:1.9;color:var(--ink-2);max-width:var(--measure)}
.lead p{margin:0 0 1.1em}
.lead p:last-child{margin-bottom:0}
.lead strong{color:var(--ink);font-weight:700}
.small{font-size:14px;line-height:1.8;color:var(--ink-3)}

/* ---------- 首屏 ---------- */
.hero{padding-top:104px}
.hero-cta{margin-top:40px}
.facts{margin-top:78px;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--ink)}
.fact{text-align:center;padding:24px 20px 28px;border-right:1px solid var(--rule)}
.fact:last-child{border-right:0}
.fact b{display:block;font-family:var(--display);font-size:31px;line-height:1.2;font-weight:800;letter-spacing:-.02em}
.fact span{display:block;margin-top:8px;font-size:13px;color:var(--ink-3);font-family:var(--mono);letter-spacing:.08em}

/* ---------- 图版 ---------- */
figure{margin:88px 0 0}
.figbox{border:1px solid var(--ink);background:var(--card);box-shadow:6px 6px 0 rgba(31,24,16,.09)}
figcaption{margin-top:14px;font-family:var(--mono);font-size:12px;color:var(--ink-3);letter-spacing:.06em}

/* ============================================================
   画布：没有窗口壳，整幅铺开
   ============================================================ */
.canvas-zone{
  position:relative;margin-top:88px;
  border-top:1px solid var(--ink);border-bottom:1px solid var(--ink);
  background-color:rgba(248,242,229,.78);
  background-image:radial-gradient(circle,var(--rule) 1px,transparent 1px);
  background-size:20px 20px;overflow:hidden;
}
.canvas-zone::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(64% 58% at 24% 18%,rgba(255,252,244,.62),transparent 72%)}
.cz-inner{position:relative;max-width:var(--maxw);margin:0 auto;height:100vh;min-height:660px;max-height:1080px}

/* 产物卡 */
.pcard{position:absolute;z-index:2;background:var(--card);border:1px solid var(--ink);
       box-shadow:5px 5px 0 rgba(31,24,16,.1)}
.pcard.is-active{outline:2px solid var(--amber);outline-offset:4px}
.pcard-bar{display:flex;align-items:center;gap:8px;padding:8px 11px;border-bottom:1px solid var(--rule);
           background:var(--paper-2);font-family:var(--mono);font-size:11px;color:var(--ink-3)}
.pcard-dot{width:7px;height:7px;background:var(--red);flex:none}
.pcard-name{color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pcard-status{margin-left:auto;white-space:nowrap}
.pcard-tools{position:absolute;top:-15px;right:8px;display:flex;gap:4px;z-index:3}
.pcard-tools i{width:25px;height:25px;display:grid;place-items:center;background:var(--card);
  border:1px solid var(--ink);font-size:12px;font-style:normal;box-shadow:2px 2px 0 rgba(31,24,16,.12)}
.pcard-label{position:absolute;left:8px;bottom:6px;font-family:var(--mono);font-size:10.5px;
  color:var(--ink-2);background:var(--card);border:1px solid var(--rule-soft);padding:1px 5px}

.pcard-site{left:2%;top:8%;width:30%}
.pcard-body{overflow:hidden}
.pcard-body img{display:block;width:100%;height:auto;object-fit:cover;object-position:top}
.pcard-site .pcard-body img{aspect-ratio:16/10}
.pcard-note{left:44%;top:22%;width:22%;padding:13px 14px;font-family:"Zhi Mang Xing","LXGW WenKai Screen",cursive}
.pcard-tag{display:inline-block;font-family:var(--mono);font-size:10px;letter-spacing:.1em;
  color:var(--ink-3);border:1px solid var(--rule);padding:1px 6px;margin-bottom:10px}
.pcard-note h4{margin:0 0 4px;font-family:inherit;font-size:22px;font-weight:400;line-height:1.3;letter-spacing:0}
.pcard-note p{margin:0;font-size:18px;line-height:1.45;color:var(--ink-2)}
.pcard-img{left:4%;bottom:8%;width:27%;overflow:hidden}
.pcard-doc{left:38%;bottom:12%;width:22%}
.pcard-doc .pcard-body img{aspect-ratio:4/3}

.mini{padding:14px 14px 30px}
.mini-nav{display:flex;gap:5px;margin-bottom:13px}
.mini-nav i{width:15px;height:5px;background:var(--rule-soft)}
.mini-h{height:14px;width:80%;background:var(--ink);opacity:.72;margin-bottom:9px}
.mini-p{height:6px;background:var(--rule-soft);margin-bottom:6px}
.mini-p.w{width:62%}
.mini-btns{display:flex;gap:6px;margin-top:12px}
.mini-btns i{width:32px;height:12px;background:var(--ink);opacity:.85}
.mini-btns i:last-child{background:transparent;border:1px solid var(--rule)}

.pcard-img-in{position:relative;overflow:hidden;background:#2F3A52}
.pcard-img-in img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.pcard-img-in::after{content:"";position:absolute;inset:0;
  background-image:radial-gradient(1.4px 1.4px at 22% 30%,rgba(255,255,255,.85),transparent),
                   radial-gradient(1.2px 1.2px at 68% 22%,rgba(255,255,255,.7),transparent),
                   radial-gradient(1.6px 1.6px at 46% 62%,rgba(255,255,255,.6),transparent),
                   radial-gradient(1.1px 1.1px at 84% 48%,rgba(255,255,255,.55),transparent)}

.cv-lines{padding:12px 13px 26px}
.cv-lines i{display:block;height:7px;background:var(--rule-soft);margin-bottom:8px}
.cv-lines i:nth-child(2){width:74%}
.cv-lines i:nth-child(3){width:46%;margin-bottom:0}


/* 会话栏 */
.chat-panel{position:absolute;right:-64px;top:42px;bottom:42px;width:300px;z-index:6;
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--card);border:1px solid var(--ink);box-shadow:8px 8px 0 rgba(31,24,16,.12)}

.chat-h{display:flex;align-items:center;gap:9px;padding:11px 14px;border-bottom:1px solid var(--rule);
        font-size:13px;color:var(--ink-2)}
.chat-h .pill{border:1px solid var(--rule);padding:4px 11px;background:var(--paper);white-space:nowrap;
              font-family:var(--mono);font-size:11.5px}
.chat-h .ico{margin-left:auto;display:flex;gap:11px;color:var(--ink-3);font-family:var(--mono);font-size:13px}
.chat-body{flex:1;padding:15px 14px;display:flex;flex-direction:column;gap:11px;overflow:hidden}
.evt{display:flex;gap:9px;font-size:12.5px;line-height:1.65;color:var(--ink-2)}
.evt .glyph{flex:none;width:15px;color:var(--ink-3);font-family:var(--mono);font-size:12px}
.evt .path{font-family:var(--mono);font-size:11.5px;color:var(--ink-3);word-break:break-all}
.evt .diff{font-family:var(--mono);font-size:11px;color:#5E7A44;margin-left:5px}
.evt .diff i{color:var(--red);font-style:normal}
.chip{display:inline-flex;align-items:center;gap:7px;align-self:flex-start;border:1px solid var(--rule);
      padding:5px 12px;background:var(--card);font-family:var(--mono);font-size:11.5px;color:var(--ink-2)}
.thinking{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11.5px;color:var(--ink-3)}
.spin{width:9px;height:9px;border-radius:50%;border:1.6px solid var(--rule);border-top-color:var(--red);
      animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.composer{margin:0 14px 14px;border:1px solid var(--rule);background:var(--paper);padding:11px 13px}
.composer .ph{font-size:13.5px;color:var(--ink-3)}
.composer .row{display:flex;align-items:center;gap:10px;margin-top:13px;
               font-family:var(--mono);font-size:11.5px;color:var(--ink-3)}
.composer .row .plus{width:20px;height:20px;border:1px solid var(--rule);display:grid;place-items:center;
                     font-size:13px;line-height:1}
.composer .row .stop{margin-left:auto;background:var(--ink);color:var(--paper);padding:4px 13px;
                     font-family:var(--display);font-weight:600;font-size:12px}

/* ============================================================
   编号分节
   ============================================================ */
.sec{display:grid;grid-template-columns:118px 1fr;padding:104px 0 0}
.sec-num{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--ink-3);
         padding-top:8px;display:flex;flex-direction:column;gap:9px}
.sec-num::before{content:"";display:block;width:28px;height:2px;background:var(--red)}
.sec-body{display:grid;grid-template-columns:minmax(0,var(--measure)) minmax(0,1fr);gap:0 56px}
.notes{border-left:1px solid var(--ink);padding-left:24px;font-family:var(--mono);font-size:12.5px;
       line-height:1.9;color:var(--ink-3)}
.notes b{display:block;color:var(--ink);font-family:var(--display);font-size:14px;font-weight:700;
         margin-bottom:6px;letter-spacing:-.01em}
.notes p{margin:0 0 18px}
.notes p:last-child{margin-bottom:0}

.pull{font-family:var(--serif);font-size:clamp(22px,2.4vw,29px);line-height:1.7;color:var(--ink);
      margin:36px 0 0;max-width:23em;text-indent:-.42em}
.pull::before{content:"“";color:var(--red);margin-right:2px}
.pull cite{display:block;margin-top:14px;font-family:var(--mono);font-style:normal;font-size:12.5px;
           color:var(--ink-3);text-indent:0;letter-spacing:.04em}

/* ---------- 深色内页 ---------- */
.dark{position:relative;overflow:hidden;margin-top:112px;background:var(--dark);
      color:var(--dark-ink);padding:104px 0 112px}
.dark::before{content:"";position:absolute;inset:-60px;z-index:0;
  background:url(case-night.webp) center/cover no-repeat;
  filter:blur(30px) saturate(.45) brightness(.42);opacity:.6}
.dark::after{content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(26,20,14,.5),rgba(26,20,14,.82))}
.dark .col{position:relative;z-index:2}
.dark .eyebrow{color:var(--dark-ink-3)}
.dark h2{color:var(--dark-ink);text-shadow:.026em .018em 0 rgba(178,58,46,.3)}
.dark .lead{color:var(--dark-ink-2)}
.dark .lead strong{color:var(--dark-ink)}
.dark .small{color:var(--dark-ink-3)}
.dark .btn-ghost{border-color:var(--dark-ink-3);color:var(--dark-ink-2)}
.dark .btn-solid{background:var(--paper);color:var(--ink)}

.steps{margin:56px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
       background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.14)}
.steps > div{background:rgba(26,20,14,.74);padding:26px 24px 30px}
.steps .num{font-family:var(--mono);font-size:12px;color:var(--gold);letter-spacing:.14em}
.steps b{display:block;margin:12px 0 8px;font-family:var(--display);font-size:16px;font-weight:700;color:var(--dark-ink)}
.steps span{font-size:14px;line-height:1.75;color:var(--dark-ink-2)}

/* ============================================================
   卡片网格
   ============================================================ */
.grid{display:grid;gap:1px;background:var(--ink);border:1px solid var(--ink);margin-top:48px}
.grid.g2{grid-template-columns:repeat(2,1fr)}
.grid.g3{grid-template-columns:repeat(3,1fr)}
.grid.g4{grid-template-columns:repeat(4,1fr)}
.cell{background:var(--paper);padding:30px 28px 34px}
.cell h3{margin:0 0 12px}
.cell p{margin:0;font-size:14.5px;line-height:1.8;color:var(--ink-2)}
.cell .k{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--red);display:block;margin-bottom:14px}
.cell ul{margin:14px 0 0;padding:0;list-style:none;font-size:14px;line-height:1.9;color:var(--ink-2)}
.cell li{padding-left:18px;position:relative}
.cell li::before{content:"·";position:absolute;left:6px;color:var(--ink-3)}

/* 作品卡 */
.works{display:grid;grid-template-columns:repeat(3,1fr);gap:34px 28px;margin-top:56px}
.work{display:block;text-decoration:none}
.work-cover{border:1px solid var(--ink);background:var(--card);aspect-ratio:4/3;position:relative;
            overflow:hidden;box-shadow:5px 5px 0 rgba(31,24,16,.1);
            transition:transform .35s var(--ease),box-shadow .35s var(--ease)}
.work-cover img{width:100%;height:100%;object-fit:cover}
.work:nth-child(3n+1) .work-cover{transform:rotate(-1.3deg)}
.work:nth-child(3n+2) .work-cover{transform:rotate(.9deg)}
.work:nth-child(3n) .work-cover{transform:rotate(-.6deg)}
.work:hover .work-cover{transform:rotate(0) translate(-2px,-2px);box-shadow:8px 8px 0 rgba(31,24,16,.16)}
.work-meta{margin-top:16px}
.work-meta h3{font-size:18px}
.work-meta p{margin:8px 0 0;font-size:13.5px;line-height:1.7;color:var(--ink-3)}
.work-tag{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--red)}
.work-tags{display:flex;align-items:baseline;gap:12px}
.work-cost{font-family:var(--mono);font-size:11.5px;color:var(--ink-3)}

/* 封面 */
.cv-a{background:linear-gradient(150deg,#2B3A52,#5C6E86 60%,#B9B2A0);height:100%}
.cv-b{background:var(--card);height:100%;padding:22px;display:flex;flex-direction:column;gap:9px}
.cv-b i{display:block;height:9px;background:var(--rule-soft)}
.cv-b i:nth-child(1){width:52%;height:15px;background:var(--ink);opacity:.72}
.cv-b i:nth-child(3){width:82%}
.cv-b i:nth-child(4){width:64%}
.cv-b i:nth-child(5){width:74%}
.cv-b i:nth-child(6){width:38%}
.cv-c{background:#F6EFD9;height:100%;padding:24px;display:flex;flex-direction:column;justify-content:center;gap:10px}
.cv-c i{display:block;height:8px;background:rgba(31,24,16,.18)}
.cv-c i:nth-child(2){width:70%}
.cv-c i:nth-child(3){width:46%}
.cv-d{height:100%;background:var(--dark);position:relative;overflow:hidden}
.cv-d::after{content:"";position:absolute;inset:0;
  background-image:radial-gradient(1.5px 1.5px at 18% 24%,rgba(255,255,255,.85),transparent),
                   radial-gradient(1.2px 1.2px at 44% 12%,rgba(255,255,255,.6),transparent),
                   radial-gradient(1.6px 1.6px at 70% 32%,rgba(255,255,255,.75),transparent),
                   radial-gradient(1.1px 1.1px at 86% 62%,rgba(255,255,255,.5),transparent),
                   radial-gradient(1.3px 1.3px at 30% 74%,rgba(255,255,255,.55),transparent)}
.cv-e{height:100%;background:var(--card);padding:20px;display:grid;grid-template-columns:repeat(3,1fr);gap:8px;align-content:center}
.cv-e i{display:block;height:34px;background:var(--rule-soft)}
.cv-e i:nth-child(2){background:rgba(178,58,46,.25)}
.cv-f{height:100%;background:linear-gradient(120deg,#E3D8C0,#C7B79A);position:relative}
.cv-f::after{content:"";position:absolute;left:50%;top:50%;width:58%;height:58%;
  transform:translate(-50%,-50%) rotate(-4deg);background:var(--card);
  box-shadow:0 10px 24px -12px rgba(31,24,16,.45)}

/* ============================================================
   定价
   ============================================================ */
.prices{display:grid;grid-template-columns:repeat(3,1fr);margin-top:64px;border-top:1px solid var(--ink)}
.price{text-align:center;padding:38px 30px 44px;border-right:1px solid var(--rule);display:flex;flex-direction:column}
.price:last-child{border-right:0}
.price h3{font-size:21px;margin:0}
.price .amt{font-family:var(--display);font-size:42px;line-height:1.15;font-weight:800;
            letter-spacing:-.025em;margin:16px 0 6px}
.price .note{font-size:14px;color:var(--ink-3);margin:0 0 26px}
.price ul{list-style:none;margin:0 auto;padding:0;font-size:15px;line-height:2.05;color:var(--ink-2);
          display:block;width:fit-content;text-align:left}
.price li{padding-left:22px;position:relative}
.price li::before{content:"✓";position:absolute;left:0;color:var(--red);font-size:12px}
.price ul{margin-bottom:28px}
.price .btn{margin-top:auto;align-self:center}   /* 三张卡的列表长短不一，按钮一律压到卡底才对得齐（09-11） */

.faq{margin-top:56px;border-top:1px solid var(--ink)}
.faq details{border-bottom:1px solid var(--rule)}
.faq summary{cursor:pointer;list-style:none;padding:22px 0;font-family:var(--display);
             font-size:17px;font-weight:700;letter-spacing:-.01em;display:flex;align-items:center;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"＋";margin-left:auto;font-family:var(--mono);color:var(--red);font-size:15px}
.faq details[open] summary::after{content:"−"}
.faq .ans{padding:0 0 26px;max-width:var(--measure);font-size:16px;line-height:1.88;color:var(--ink-2)}
.faq .ans p{margin:0 0 .9em}
.faq .ans p:last-child{margin-bottom:0}


/* ---------- 真实画布截图（替代原来手搓的 mock） ---------- */
.cz-shot{position:relative;margin-top:88px}
.cz-shot .shot{display:block;border:1px solid var(--ink);background:var(--card);box-shadow:8px 8px 0 rgba(31,24,16,.1);overflow:hidden}
.cz-shot .shot img,.cz-shot .shot video{display:block;width:100%;height:auto}
.cz-notes{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:22px;border-top:1px solid var(--ink)}
.cz-notes div{padding:16px 18px 18px 0;border-right:1px solid var(--rule);font-size:14px;line-height:1.7;color:var(--ink-2)}
.cz-notes div:last-child{border-right:0}
.cz-notes b{display:block;font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--red);margin-bottom:6px}
.cz-pair{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:22px}
.cz-pair .shot{box-shadow:5px 5px 0 rgba(31,24,16,.1)}
.cz-pair figcaption{margin-top:10px}

/* ---------- 数字与状态 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);margin-top:56px;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.stats div{padding:26px 16px 28px;border-right:1px solid var(--rule);text-align:center}
.stats div:last-child{border-right:0}
.stats b{display:block;font-family:var(--display);font-size:38px;line-height:1.1;font-weight:800;letter-spacing:-.025em}
.stats span{display:block;margin-top:8px;font-size:13px;color:var(--ink-3);font-family:var(--mono);letter-spacing:.06em}
.status{margin-top:40px;border:1px solid var(--rule);background:var(--card);padding:20px 24px 22px;max-width:var(--measure)}
.status .k{display:block;font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;color:var(--ink-3);margin-bottom:10px}
.status p{margin:0 0 .6em;font-size:15.5px;line-height:1.85;color:var(--ink-2)}
.status p:last-child{margin-bottom:0}
@media (max-width:760px){
  .cz-notes{grid-template-columns:1fr}
  .cz-notes div{border-right:0;border-bottom:1px solid var(--rule)}
  .cz-notes div:last-child{border-bottom:0}
  .cz-pair{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stats div:nth-child(2){border-right:0}
  .stats div:nth-child(-n+2){border-bottom:1px solid var(--rule)}
}

/* ---------- 真实用量 ---------- */
.usage{display:grid;grid-template-columns:repeat(4,1fr);margin-top:34px;border-top:1px solid var(--ink)}
.usage .u{padding:22px 16px 24px;border-right:1px solid var(--rule);text-align:center}
.usage .u:last-child{border-right:0}
.usage .u b{display:block;font-family:var(--display);font-size:34px;line-height:1.15;font-weight:800;letter-spacing:-.02em}
.usage .u span{display:block;margin-top:8px;font-size:13px;line-height:1.5;color:var(--ink-3);font-family:var(--mono)}
@media (max-width:760px){.usage{grid-template-columns:repeat(2,1fr)}.usage .u:nth-child(2){border-right:0}.usage .u:nth-child(-n+2){border-bottom:1px solid var(--rule)}}

/* ---------- 收尾 CTA ---------- */
.cta{margin-top:112px;padding:0 0 8px}
.cta-in{border-top:1px solid var(--ink);padding-top:72px}
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) 318px;gap:60px;align-items:start}
.cta-side{border-left:1px solid var(--ink);padding-left:26px}
.cta-side ul{margin:14px 0 0;padding:0;list-style:none;font-family:var(--serif);
  font-size:16px;line-height:2;color:var(--ink-2)}
.cta-side li{padding-left:22px;position:relative}
.cta-side li::before{content:"—";position:absolute;left:0;color:var(--red)}
@media (max-width:860px){.cta-grid{grid-template-columns:1fr;gap:34px}
  .cta-side{border-left:0;padding-left:0;border-top:1px solid var(--ink);padding-top:22px}}

/* ---------- 页脚 ---------- */
footer{padding:56px 0 60px;border-top:1px solid var(--ink);margin-top:96px}
.foot-in{display:flex;gap:24px;align-items:baseline;flex-wrap:wrap;font-family:var(--mono);
         font-size:12.5px;letter-spacing:.04em;color:var(--ink-3)}
.foot-in a{color:var(--ink-2);text-decoration:none}
.foot-in a:hover{color:var(--ink)}
.foot-in .grow{margin-left:auto}

/* ---------- 入场 ---------- */
.js .reveal{opacity:0;transform:translateY(14px);
        transition:opacity .62s var(--ease),transform .62s var(--ease);
        transition-delay:calc(var(--i,0) * 70ms)}
.js .reveal.is-in{opacity:1;transform:none}

/* ============================================================
   交互组件
   ============================================================ */

/* BYOK 条 */
.byok{margin-top:56px;border:1px solid var(--ink);border-left:4px solid var(--red);
  background:var(--card);padding:22px 26px;display:flex;gap:22px;align-items:baseline;
  box-shadow:5px 5px 0 rgba(31,24,16,.08)}
.byok-k{font-family:var(--mono);font-size:12px;letter-spacing:.18em;color:var(--red);white-space:nowrap}
.byok p{margin:0;font-size:16.5px;line-height:1.75;color:var(--ink-2)}
.byok strong{color:var(--ink);font-weight:700}
@media (max-width:700px){.byok{flex-direction:column;gap:10px;padding:20px 20px}}

/* 筛选片 */
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:40px}
.chip{font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;padding:8px 17px;
  border:1px solid var(--ink);background:transparent;color:var(--ink-2);cursor:pointer;
  transition:background .2s,color .2s}
.chip:hover{background:rgba(31,24,16,.06)}
.chip.is-on{background:var(--ink);color:var(--paper)}
.work.is-hidden{display:none}

/* 用量计算器 */
.calc{margin-top:48px;max-width:780px;border:1px solid var(--ink);background:var(--card);
  padding:34px 34px 30px;box-shadow:6px 6px 0 rgba(31,24,16,.09)}
.calc-row{display:flex;align-items:center;gap:22px}
.calc-row label{font-family:var(--display);font-weight:700;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.calc-row output{font-family:var(--mono);font-size:15px;color:var(--red);min-width:74px;text-align:right}
.calc input[type=range]{-webkit-appearance:none;appearance:none;flex:1;height:24px;outline:none;cursor:pointer;
  background-image:linear-gradient(var(--ink),var(--ink));
  background-size:100% 2px;background-position:center;background-repeat:no-repeat;background-color:transparent}
.calc input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;
  background:var(--red);border:1px solid var(--ink);cursor:pointer}
.calc input[type=range]::-moz-range-thumb{width:20px;height:20px;background:var(--red);
  border:1px solid var(--ink);border-radius:0;cursor:pointer}
.calc-out{margin-top:28px;padding-top:24px;border-top:1px solid var(--rule);
  display:flex;align-items:baseline;gap:18px;flex-wrap:wrap}
.calc-out .calc-label{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--ink-3)}
.calc-out strong{font-family:var(--display);font-size:36px;font-weight:800;letter-spacing:-.028em}
.calc-note{flex-basis:100%;margin-top:4px;font-size:13.5px;line-height:1.7;color:var(--ink-3)}

/* 场景选择器 */
.picker{margin-top:48px;border:1px solid var(--ink);background:var(--card);
  box-shadow:6px 6px 0 rgba(31,24,16,.09)}
.picker-tabs{display:flex;flex-wrap:wrap;border-bottom:1px solid var(--rule)}
.picker-tabs button{font-family:var(--mono);font-size:12.5px;padding:14px 21px;background:transparent;
  border:0;border-right:1px solid var(--rule);color:var(--ink-2);cursor:pointer;transition:background .2s}
.picker-tabs button:hover{background:rgba(31,24,16,.05)}
.picker-tabs button.is-on{background:var(--paper-2);color:var(--ink);box-shadow:inset 0 -2px 0 var(--red)}
.picker-panel{display:none;padding:28px 30px 32px}
.picker-panel.is-on{display:block}
.picker-panel .lead{margin-top:0}
.picker-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--rule);
  border:1px solid var(--rule);margin-top:22px}
.picker-steps div{background:var(--card);padding:18px 18px 22px}
.picker-steps b{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.14em;
  color:var(--red);margin-bottom:9px;font-weight:400}
.picker-steps span{font-size:14px;line-height:1.7;color:var(--ink-2)}
.tool-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}
.tool-pill{font-family:var(--mono);font-size:11.5px;border:1px solid var(--rule);
  padding:5px 11px;color:var(--ink-2)}

/* 对比表 */
.cmp{margin-top:48px;width:100%;border-collapse:collapse;font-size:15.5px}
.cmp th,.cmp td{text-align:left;padding:17px 18px;border-bottom:1px solid var(--rule);vertical-align:top}
.cmp th{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--ink-3);
  font-weight:400;border-bottom:1px solid var(--ink)}
.cmp td:first-child{font-family:var(--display);font-weight:700;width:20%}
.cmp tr:last-child td{border-bottom:0}
.cmp .hi{color:var(--ink);font-weight:600}

@media (max-width:760px){
  .calc{padding:24px 22px 22px}
  .calc-row{flex-wrap:wrap;gap:14px}
  .calc input[type=range]{flex-basis:100%}
  .picker-steps{grid-template-columns:1fr}
  .cmp{font-size:14px}
  .cmp th,.cmp td{padding:13px 12px}
  .cmp td:first-child{width:auto}
}

/* ============================================================
   更新日志 / 文档列表 / 关于
   ============================================================ */
.log{margin-top:72px;border-top:1px solid var(--ink)}
.log-item{display:grid;grid-template-columns:176px 1fr;gap:40px;padding:32px 0;
  border-bottom:1px solid var(--rule)}
.log-date{font-family:var(--mono);font-size:12.5px;letter-spacing:.08em;color:var(--ink-3)}
.log-ver{display:block;margin-top:7px;color:var(--red)}
.log-body h3{font-size:22px;margin-bottom:13px}
.log-body ul{margin:0;padding:0;list-style:none;font-size:15.5px;line-height:1.9;color:var(--ink-2)}
.log-body li{padding-left:20px;position:relative}
.log-body li::before{content:"·";position:absolute;left:6px;color:var(--ink-3)}

.doclist{margin-top:48px;border-top:1px solid var(--ink)}
.docrow{display:grid;grid-template-columns:112px 1fr 28px;gap:26px;align-items:baseline;
  padding:21px 4px;border-bottom:1px solid var(--rule);text-decoration:none;
  transition:background .2s}
.docrow:hover{background:rgba(31,24,16,.045)}
.docrow-k{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--red)}
.docrow-t{font-family:var(--display);font-weight:700;font-size:18px;letter-spacing:-.01em;display:block}
.docrow-d{display:block;margin-top:5px;font-size:14.5px;line-height:1.7;color:var(--ink-3)}
.docrow-a{font-family:var(--mono);color:var(--ink-3);text-align:right}

.about-lead{margin-top:40px;max-width:var(--measure);font-size:21px;line-height:1.85;color:var(--ink-2)}
.about-lead p{margin:0 0 1em}
.about-lead p:last-child{margin-bottom:0}
.about-lead strong{color:var(--ink);font-weight:700}

@media (max-width:760px){
  .log-item{grid-template-columns:1fr;gap:14px;padding:26px 0}
  .docrow{grid-template-columns:1fr 28px;gap:12px}
  .docrow-k{grid-column:1 / -1;margin-bottom:2px}
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1040px){
  .chat-panel{width:262px}
}
@media (max-width:960px){
  :root{--gut:24px}
  .sec{grid-template-columns:1fr;padding-top:80px}
  .sec-num{flex-direction:row;align-items:center;padding-top:0;margin-bottom:14px}
  .sec-body{grid-template-columns:1fr;gap:28px}
  .notes{border-left:0;padding-left:0;border-top:1px solid var(--ink);padding-top:20px}
  .facts{grid-template-columns:repeat(2,1fr)}
  .fact:nth-child(2){border-right:0}
  .fact:nth-child(-n+2){border-bottom:1px solid var(--rule)}
  .grid.g3,.grid.g4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .works{grid-template-columns:repeat(2,1fr)}
  .prices{grid-template-columns:1fr}
  .price{border-right:0;border-bottom:1px solid var(--rule);padding-right:0}
  .price:last-child{border-bottom:0}
  .nav-links{display:none}
  .cz-inner{height:580px}
  .chat-panel{width:238px;top:28px;bottom:28px}
  .chat-body{overflow:visible}
  .pcard-site{width:38%}
  .pcard-note{width:24%}
  .pcard-img{width:28%}
  .pcard-doc{width:24%}
}
@media (max-width:600px){
  body{font-size:16px}
  .grid.g2,.grid.g3,.grid.g4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .works{grid-template-columns:1fr}
  .facts{grid-template-columns:1fr}
  .fact{border-right:0;border-bottom:1px solid var(--rule);padding:18px 0 20px}
  .fact:last-child{border-bottom:0}
  .cz-inner{height:520px}
  .chat-panel{width:198px}
  .proof{display:none}
  .hero{padding-top:72px}
  .cz-shot{margin-left:calc(-1 * var(--gut));margin-right:calc(-1 * var(--gut))}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
  .js .reveal{opacity:1;transform:none}
  .btn:hover,.work:hover .work-cover{transform:none}
}

/* ============================================================
   首屏画布：按真实工作区手绘（09-09 站主：不要截图，手动画界面）
   ============================================================ */
.cz-board{height:calc(100vh - 66px);min-height:620px;max-height:1000px}
.zone-tag{position:absolute;z-index:2;font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;color:var(--ink-3);
  border:1px solid var(--rule);background:var(--card);padding:2px 7px}
.chalk{position:absolute;z-index:2;font-family:var(--serif);color:var(--ink);line-height:1.5;
  text-shadow:0 0 1px rgba(31,24,16,.25)}
.chalk-title{font-size:19px;letter-spacing:.04em}
.chalk-node{font-size:13.5px;color:var(--ink-2);white-space:nowrap}
.chalk-node b{display:block;font-weight:400;font-size:19px;color:var(--ink);margin-bottom:2px;letter-spacing:.06em}
.cz-lines{position:absolute;inset:0;width:100%;height:100%;z-index:1;pointer-events:none}
.cz-lines .ln{fill:none;stroke:#8F8674;stroke-width:1.1;vector-effect:non-scaling-stroke}
.cz-lines .ln.red{stroke:var(--red);stroke-width:2.6;opacity:.9}
.cz-lines .ln.dot{stroke:#A79C86;stroke-dasharray:3 4}
.ln-label{position:absolute;z-index:2;font-family:var(--mono);font-size:9.5px;color:var(--ink-3);background:var(--paper);padding:0 4px;white-space:nowrap}
.ln-label.red{color:var(--red)}
.pcard-portrait{width:12.5%;margin:0;padding:5px 5px 0;background:var(--card)}
.pcard-portrait img{display:block;width:100%;height:auto;aspect-ratio:3/2;object-fit:cover}
.pcard-portrait figcaption{margin:0;padding:5px 2px 4px;font-family:var(--mono);font-size:9.5px;color:var(--ink-3);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;letter-spacing:0}
.minimap{position:absolute;left:0;bottom:0;width:130px;height:86px;z-index:3;background:var(--card);
  border:1px solid var(--ink);box-shadow:4px 4px 0 rgba(31,24,16,.1)}
.minimap i{position:absolute;width:12px;height:8px;background:var(--rule)}
.chat-panel{right:0;top:32px;bottom:32px;width:322px}
.chat-h .ico span:first-child{border:1px solid var(--rule);padding:2px 8px;background:var(--paper);color:var(--ink-2)}
.evt .arg{font-family:var(--mono);font-size:11px;color:var(--ink-3)}
.evt.think{color:var(--ink-3);font-size:12px}
.evt.done{font-family:var(--mono);font-size:11px;color:#5E7A44}
.reply{font-size:12.5px;line-height:1.75;color:var(--ink-2);border-top:1px solid var(--rule-soft);padding-top:10px}
.cz-board .pcard-note h4{font-size:19px}.cz-board .pcard-note p{font-size:15px;line-height:1.4}
.cz-board .chat-body{-webkit-mask-image:linear-gradient(#000 82%,transparent);mask-image:linear-gradient(#000 82%,transparent)}
.reply p{margin:0 0 8px}
.composer .row .model{border:1px solid var(--rule);padding:3px 9px;background:var(--card);color:var(--ink-2)}
.composer .row .send{margin-left:auto;border:1px solid var(--rule);padding:4px 12px;color:var(--ink-3);font-family:var(--display);font-size:12px}
@media (max-width:1100px){.chat-panel{width:272px}}
@media (max-width:960px){
  .cz-board{height:calc(100vh - 60px);min-height:520px;max-height:760px}
  .chat-panel{width:236px;top:24px;bottom:24px}
  .chalk-node{font-size:12px}.chalk-node b{font-size:16px}.chalk-title{font-size:16px}
  .pcard-note{display:none}
}
.m-only{display:none}
@media (max-width:600px){
  .cz-board{height:auto;min-height:0;aspect-ratio:1/0.96;max-height:none}
  .m-hide,.chat-panel,.minimap,.pcard-note,.n3,.n5,.p4,.chalk-node .d{display:none}
  .m-only{display:block}
  .pcard-portrait{width:24%}
  .p1{left:6%!important;top:12%!important}.p2{left:38%!important;top:12%!important}.p3{left:70%!important;top:12%!important}
  .n1{left:8%!important;top:44%!important}.n2{left:38%!important;top:44%!important}
  .n4{left:8%!important;top:70%!important}.n6{left:56%!important;top:70%!important}
  .chalk-node b{font-size:17px}
  .chalk-title{font-size:15px;top:9.5%!important}
  .zone-tag{top:3%!important}
}

/* ---- 09-11 首屏画布换成雾岭咖啡项目 ---- */
.cz-board .c-manual{left:2.5%;top:15%;width:17%}
.cz-board .c-site{left:23%;top:15%;width:26%}
.cz-board .c-deck{left:23%;top:56%;width:24%}
.c-manual .pcard-body img{aspect-ratio:4/3}
.c-site .pcard-body img{aspect-ratio:16/10}
.c-deck .pcard-body img{aspect-ratio:16/9}
.pcard-bag{width:5.6%;margin:0;padding:6px 6px 0;background-color:#fbf8f2;
  background-image:linear-gradient(45deg,#efe9df 25%,transparent 25%),linear-gradient(-45deg,#efe9df 25%,transparent 25%),
                   linear-gradient(45deg,transparent 75%,#efe9df 75%),linear-gradient(-45deg,transparent 75%,#efe9df 75%);
  background-size:12px 12px;background-position:0 0,0 6px,6px -6px,-6px 0}
.pcard-bag img{display:block;width:100%;height:auto;aspect-ratio:3/4;object-fit:contain;filter:drop-shadow(0 6px 8px rgba(31,24,16,.22))}
.pcard-bag figcaption{margin:0 -6px;padding:4px 6px;font-family:var(--mono);font-size:9px;color:var(--ink-3);background:var(--card);
  border-top:1px solid var(--rule-soft);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chalk-plan{left:50.5%;top:52%;width:21%;font-family:"LXGW WenKai Screen",var(--serif);font-size:14px;color:var(--ink-2)}
.chalk-plan .t{font-size:17px;color:var(--ink);letter-spacing:.04em;margin-bottom:6px}
.chalk-plan ol{list-style:none;margin:0;padding:0;line-height:1.95}
.chalk-plan li b{font-weight:400;color:var(--ink-3);font-family:var(--mono);font-size:11px;margin-right:7px}
.chalk-plan li.del{color:var(--red);text-decoration:line-through;text-decoration-thickness:1.5px}
.chalk-plan li .add{color:var(--ink);background:rgba(200,146,58,.24);padding:0 3px}
.chalk-plan li .who{display:inline-block;margin-left:7px;font-family:var(--mono);font-size:9.5px;color:var(--red)}
@media (max-width:960px){.chalk-plan{display:none}}
@media (max-width:600px){
  .cz-board .c-site{left:5%!important;top:17%!important;width:58%!important}
  .cz-board .c-deck{left:38%!important;top:60%!important;width:56%!important}
  .cz-board .c-manual{left:5%!important;top:66%!important;width:30%!important}
  .pcard-bag,.c-note,#cz-links,.ln-label.auto{display:none}   /* 窄屏卡片挨得近，线藏在卡后、标签反而压在卡上 */
}