/* ==========================================================================
   照片工坊 / PhotoSize — 全站样式
   纯静态、无依赖、无 CDN（离线可用）
   ========================================================================== */
:root{
  --ink:#0f172a; --ink2:#334155; --muted:#64748b; --line:#e2e8f0;
  --bg:#ffffff; --soft:#f8fafc; --soft2:#f1f5f9;
  --accent:#4f46e5; --accent-d:#4338ca; --accent-soft:#eef2ff;
  --ok:#059669; --warn:#b45309;
  --r:14px; --shadow:0 1px 2px rgba(15,23,42,.05), 0 8px 24px -12px rgba(15,23,42,.12);
  --max:1120px;
}
@media(min-width:1700px){ :root{ --max:1200px } }
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.3;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(1.7rem,3.6vw,2.5rem);font-weight:800}
h2{font-size:clamp(1.25rem,2.2vw,1.6rem);font-weight:700}
h3{font-size:1.05rem;font-weight:700}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px;width:100%}
h1,h2,h3,.card .nm{overflow-wrap:break-word;hyphens:auto}
@media(max-width:400px){ .wrap{padding:0 14px} }
.muted{color:var(--muted)}
.small{font-size:.85rem}

/* ---------- 顶栏 ---------- */
.hd{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.hd-in{max-width:var(--max);margin:0 auto;padding:0 20px;min-height:60px;display:flex;align-items:center;
  flex-wrap:nowrap;gap:clamp(8px,2vw,22px)}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:1.06rem;color:var(--ink);
  white-space:nowrap;min-width:0;flex:0 1 auto;overflow:hidden;text-overflow:ellipsis}
.brand .mk{flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand .mk{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,#4f46e5,#06b6d4);color:#fff;
  display:grid;place-items:center;font-size:15px;font-weight:800;flex:0 0 auto}
.mk svg{width:17px;height:17px;display:block}
.hd nav{display:flex;gap:20px;margin-left:auto;font-size:.92rem;flex:0 0 auto}
.hd nav a{color:var(--ink2);font-weight:500;white-space:nowrap}
.hd nav a:hover{color:var(--accent);text-decoration:none}
.hd-cta{margin-left:4px;white-space:nowrap}
@media(max-width:560px){ .btn.hd-cta{display:none} }
.langsel{border:1px solid var(--line);border-radius:8px;padding:6px 8px;font-size:.85rem;background:#fff;color:var(--ink2);
  width:auto;max-width:40vw;flex:0 0 auto;margin-left:auto}
@media(max-width:880px){ .hd nav{display:none} }
@media(max-width:400px){
  .hd-in{padding:0 14px;min-height:56px}
  .brand{font-size:.98rem;gap:7px}
  .brand .mk{width:27px;height:27px;border-radius:8px;font-size:13px}
  .langsel{max-width:40vw;font-size:.8rem;padding:5px 6px}
}

/* ---------- 通用块 ---------- */
.hero{padding:56px 0 34px;text-align:center}
.hero p.lead{font-size:1.08rem;color:var(--muted);max-width:640px;margin:0 auto 26px}
.hero h1 span{background:linear-gradient(90deg,#4f46e5,#06b6d4);-webkit-background-clip:text;background-clip:text;color:transparent}
.btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;
  background:var(--accent);color:#fff;font-weight:650;font-size:.97rem;padding:12px 22px;border-radius:11px;
  transition:.15s transform,.15s background;font-family:inherit}
.btn:hover{background:var(--accent-d);color:#fff;text-decoration:none;transform:translateY(-1px)}
.btn.ghost{background:#fff;color:var(--ink2);border:1px solid var(--line)}
.btn.ghost:hover{background:var(--soft);color:var(--ink)}
.btn.sm{padding:8px 14px;font-size:.88rem;border-radius:9px}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
@media(hover:none){ .btn:hover{transform:none} .card:hover{transform:none} }

.trust{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:22px 0 0}
.trust span{font-size:.82rem;color:var(--ink2);background:var(--soft);border:1px solid var(--line);padding:5px 11px;border-radius:999px}

section.blk{padding:44px 0}
section[id],div[id]{scroll-margin-top:74px}
.blk-h{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.blk-h p{margin:0;color:var(--muted);font-size:.94rem}

/* ---------- 规格卡 ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(196px,1fr));gap:14px}
@media(max-width:520px){ .grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
  .card{padding:13px} .card .nm{font-size:.94rem} }
.card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r);padding:16px;background:#fff;
  transition:.16s box-shadow,.16s transform,.16s border-color;color:inherit}
.card:hover{text-decoration:none;border-color:#c7d2fe;box-shadow:var(--shadow);transform:translateY(-2px)}
.card .nm{font-weight:700;font-size:.98rem;margin-bottom:5px;color:var(--ink)}
.card .sz{font-size:.83rem;color:var(--muted);font-variant-numeric:tabular-nums;margin-bottom:12px}
.card .chip{display:inline-block;margin-top:9px;font-size:.74rem;color:var(--accent);background:var(--accent-soft);
  padding:2px 8px;border-radius:6px;max-width:100%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  align-self:flex-start;margin-top:auto}

/* ---------- 分组标题 ---------- */
.grp{margin:34px 0 14px;display:flex;align-items:center;gap:10px}
.grp h2{font-size:1.15rem;margin:0}
.grp .ln{flex:1;height:1px;background:var(--line)}

/* ---------- 工具页 ---------- */
.tool{padding:26px 0 60px}
.tool-hd{text-align:center;margin-bottom:22px}
.tool-hd h1{font-size:clamp(1.4rem,2.6vw,1.9rem);margin-bottom:6px}
.tool-hd p{color:var(--muted);font-size:.92rem;margin:0}

.editor{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:26px;align-items:start}
@media(max-width:1080px){ .editor{grid-template-columns:minmax(0,1fr) 340px;gap:20px} }
@media(max-width:900px){ .editor{grid-template-columns:1fr} }
@media(max-width:900px){ .stage-inner{min-height:260px} #cv{max-height:56vh} }

.stage{background:var(--soft);border:1px solid var(--line);border-radius:var(--r);padding:20px;position:relative;overflow:hidden}
@media(max-width:400px){ .stage{padding:12px} }
.stage-inner{display:flex;justify-content:center;align-items:center;min-height:330px}
#cv{max-width:100%;max-height:62vh;border-radius:6px;box-shadow:0 6px 26px -12px rgba(15,23,42,.35);background:#fff;cursor:grab;touch-action:none}
#cv.drag{cursor:grabbing}
.drop{position:absolute;inset:0;display:none;place-items:center;text-align:center;border:2px dashed #a5b4fc;
  border-radius:var(--r);background:rgba(238,242,255,.94);color:var(--accent);font-weight:600;z-index:3;padding:20px}
.drop.on{display:grid}
.empty{text-align:center;padding:34px 16px;color:var(--muted)}
.empty svg{opacity:.5;margin-bottom:12px}
.empty .btn{margin-top:14px}

.panel{display:flex;flex-direction:column;gap:16px}
.box{border:1px solid var(--line);border-radius:var(--r);padding:16px;background:#fff}
.box h3{font-size:.92rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin:0 0 12px;font-weight:700}
.field{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.field:last-child{margin-bottom:0}
.field label{font-size:.88rem;color:var(--ink2);flex:0 0 auto}
.field .val{font-variant-numeric:tabular-nums;color:var(--muted);font-size:.85rem;min-width:52px;text-align:right}
select,input[type=number],input[type=text]{font-family:inherit;font-size:.88rem;color:var(--ink);
  border:1px solid var(--line);border-radius:8px;padding:7px 9px;background:#fff;max-width:190px;width:100%}
select:focus,input:focus{outline:2px solid var(--accent-soft);border-color:var(--accent)}
input[type=range]{width:100%;height:24px;accent-color:var(--accent)}
input[type=checkbox]{width:24px;height:24px;accent-color:var(--accent);flex:0 0 auto;cursor:pointer}
/* iOS 在字号小于 16px 时会对输入框自动放大 */
@media(max-width:760px){
  select,input[type=number],input[type=text]{font-size:16px;max-width:100%}
  .field{gap:8px}
  .field label{font-size:.86rem}
}
.range-row{display:block;margin-bottom:14px}
.range-row .lb{display:flex;justify-content:space-between;font-size:.85rem;color:var(--ink2);margin-bottom:5px}

.swatches{display:flex;gap:8px;flex-wrap:wrap}
@media(max-width:520px){ .sw{width:42px;height:42px} }
.sw{width:38px;height:38px;min-width:38px;border-radius:9px;border:2px solid transparent;cursor:pointer;position:relative;
  box-shadow:inset 0 0 0 1px rgba(15,23,42,.12)}
.sw.on{border-color:var(--accent);box-shadow:inset 0 0 0 1px rgba(15,23,42,.12),0 0 0 3px var(--accent-soft)}
.sw.none{background:#fff repeating-linear-gradient(45deg,#e2e8f0 0 4px,#fff 4px 8px);display:grid;place-items:center;font-size:10px;color:var(--muted)}

.kbrow{display:flex;gap:6px;align-items:center;flex:1;min-width:0}
.kbrow input{flex:1;min-width:0;max-width:none}
.kbrow span{flex:0 0 auto}
.stat{font-size:.83rem;color:var(--muted);line-height:1.6}
.stat b{color:var(--ink);font-weight:650;font-variant-numeric:tabular-nums}
.warnline{font-size:.8rem;color:var(--warn);background:#fffbeb;border:1px solid #fde68a;border-radius:8px;padding:8px 10px;margin-top:10px}

/* ---------- 规格详情页 ---------- */
.crumb{font-size:.84rem;color:var(--muted);padding:18px 0 0}
.crumb a{color:var(--muted)}
.spec-wrap{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:36px;padding:24px 0 60px;align-items:start}
@media(max-width:860px){ .spec-wrap{grid-template-columns:1fr;gap:22px;padding-top:16px} }
@media(max-width:420px){
  table.facts th,table.facts td{padding:9px 8px;font-size:.88rem}
  table.facts th{width:38%}
  .aside{position:static}
}
table.facts{width:100%;border-collapse:collapse;font-size:.93rem;margin:0 0 20px}
table.facts th,table.facts td{padding:11px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.facts th{width:42%;color:var(--muted);font-weight:500;background:var(--soft)}
table.facts td{font-weight:600;font-variant-numeric:tabular-nums}
.prose ul{padding-left:20px;color:var(--ink2)}
.prose li{margin-bottom:8px}
.aside{border:1px solid var(--line);border-radius:var(--r);padding:18px;background:var(--soft);position:sticky;top:80px}
.aside h3{font-size:.95rem;margin-bottom:10px}
.aside .btn{width:100%}
.note{font-size:.82rem;color:var(--muted);line-height:1.6}

/* 缩略示意 */
.preview-box{background:var(--soft2);border-radius:10px;display:grid;place-items:center;padding:18px;margin-bottom:16px}
.preview-box .ph{background:#fff;border:1px solid var(--line);border-radius:2px;position:relative;box-shadow:0 4px 14px -6px rgba(15,23,42,.25)}
.preview-box .ph::after{content:"";position:absolute;left:22%;right:22%;top:18%;height:40%;border-radius:50% 50% 44% 44%;background:#e2e8f0}
.preview-box .ph::before{content:"";position:absolute;left:14%;right:14%;bottom:0;height:34%;border-radius:46% 46% 0 0;background:#e2e8f0}
.preview-box .mm{text-align:center;font-size:.78rem;color:var(--muted);margin-top:10px;font-variant-numeric:tabular-nums}

/* ---------- 广告 ---------- */
.ad{margin:26px 0;text-align:center;min-height:0}
.ad .ad-tag{display:block;font-size:.65rem;color:#cbd5e1;letter-spacing:.1em;text-transform:uppercase;margin-bottom:4px}
.ad ins{display:block}

/* ---------- 页脚 ---------- */
.ft{border-top:1px solid var(--line);background:var(--soft);margin-top:20px;padding:34px 0 40px;font-size:.86rem;color:var(--muted)}
.ft-in{max-width:var(--max);margin:0 auto;padding:0 20px;display:flex;gap:24px;flex-wrap:wrap;justify-content:space-between}
.ft a{color:var(--ink2)}
.ft .fcol{display:flex;gap:18px;flex-wrap:wrap}
.ft .fine{flex-basis:100%;border-top:1px solid var(--line);padding-top:16px;line-height:1.7}

/* ---------- 杂项 ---------- */
.tag{display:inline-block;font-size:.74rem;background:var(--accent-soft);color:var(--accent);padding:3px 9px;border-radius:6px;font-weight:600}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:8px}
.step{border:1px solid var(--line);border-radius:var(--r);padding:18px}
.step .n{width:26px;height:26px;border-radius:8px;background:var(--accent-soft);color:var(--accent);
  display:grid;place-items:center;font-weight:800;font-size:.82rem;margin-bottom:10px}
.step h3{font-size:.98rem;margin-bottom:5px}
.step p{font-size:.86rem;color:var(--muted);margin:0}
.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq summary{cursor:pointer;font-weight:650;font-size:.95rem}
.faq p{margin:10px 0 0;color:var(--ink2);font-size:.9rem}
.legal{max-width:760px;padding:36px 0 60px}
@media(max-height:520px) and (orientation:landscape){
  .hero{padding:24px 0 16px}
  .stage-inner{min-height:180px}
  #cv{max-height:74vh}
  .blk{padding:28px 0}
  .aside{position:static}
}
.legal h1{font-size:1.7rem}
.legal h2{font-size:1.1rem;margin-top:1.8em}

/* ---------- 场景入口页 ---------- */
.land{max-width:840px;margin:0 auto;padding:6px 0 56px}
.land h1{font-size:clamp(1.45rem,4.2vw,1.95rem);line-height:1.28;margin:10px 0 12px}
.land p.lead{font-size:1.02rem;line-height:1.75;color:var(--ink2);margin:0 0 22px}
.land .btns{justify-content:flex-start;margin-bottom:6px}
.land h2{font-size:1.1rem;margin:34px 0 12px}
.card .sz.clamp2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.land-specs{border-top:1px solid var(--line);margin:0 0 4px}
.ls-row{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr) auto;gap:14px;align-items:center;
  padding:12px 2px;border-bottom:1px solid var(--line);color:inherit;font-size:.92rem}
.ls-row:hover{text-decoration:none;background:var(--soft)}
.ls-name{font-weight:650;color:var(--ink);overflow-wrap:break-word}
.ls-dim{color:var(--muted);font-variant-numeric:tabular-nums;font-size:.86rem}
.ls-bg{display:inline-flex;align-items:center;gap:6px;font-size:.8rem;color:var(--muted);
  font-variant-numeric:tabular-nums}
.ls-bg i{width:15px;height:15px;border-radius:4px;border:1px solid rgba(15,23,42,.28);display:inline-block;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.5)}
.land-note{margin:22px 0 0;padding:12px 14px;border-left:3px solid var(--accent);background:var(--accent-soft);
  border-radius:0 9px 9px 0;font-size:.88rem;line-height:1.7;color:var(--ink2)}
.preset-bar{margin:0 0 20px;padding:10px 14px;border:1px solid #c7d2fe;background:var(--accent-soft);
  border-radius:10px;font-size:.86rem;color:var(--ink2);display:flex;gap:10px;align-items:center;
  flex-wrap:wrap;justify-content:center}
.preset-bar .tag{background:#fff}
@media(max-width:560px){
  .ls-row{grid-template-columns:minmax(0,1fr) auto;gap:3px 10px;padding:12px 0}
  .ls-name{grid-column:1;grid-row:1}
  .ls-bg{grid-column:2;grid-row:1}
  .ls-dim{grid-column:1 / -1;grid-row:2;font-size:.83rem}
}

/* ---------- 长尾关键词入口（后台可配） ---------- */
.kwcloud{display:flex;flex-wrap:wrap;gap:9px}
.kw{display:inline-block;padding:8px 13px;border:1px solid var(--line);border-radius:999px;
  background:#fff;color:var(--ink2);font-size:.86rem;line-height:1.2;white-space:nowrap;
  max-width:100%;overflow:hidden;text-overflow:ellipsis;transition:.15s border-color,.15s color}
.kw:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
@media(max-width:520px){ .kwcloud{gap:7px} .kw{padding:7px 11px;font-size:.82rem} }
@media(hover:none){ .kw:hover{border-color:var(--line);color:var(--ink2)} }