/* V12 已确认界面：columns.css；按原层叠顺序整理。 */
.inner-page-v12{--column-accent:#a5eaff;--column-glow:#5cbbde28;--location-height:51px}
.inner-page-v12.page-method{--column-accent:#a9e7ec;--column-glow:#66bdd624}
.inner-page-v12.page-delivery{--column-accent:#d0baff;--column-glow:#9c7bdd2a}
.inner-page-v12.page-faq{--column-accent:#b8d4ff;--column-glow:#829cde22}
.inner-page-v12 main{padding-top:var(--global-header-height)}
.inner-page-v12 .inner-atmosphere{background:radial-gradient(ellipse 58% 660px at 94% 200px,var(--column-glow),transparent 88%),radial-gradient(ellipse 45% 650px at 0 60%,#5530641a,transparent 85%)}
.inner-page-v12 .inner-atmosphere::before{display:none}
.column-location-v12{position:sticky;top:var(--global-header-height);z-index:65;background:#0a0b13f2;border-bottom:1px solid #b6a1d43d;backdrop-filter:blur(18px)}
.column-location-v12>.container{height:var(--location-height);display:flex;align-items:center;justify-content:space-between;gap:24px}
.column-location-v12 .breadcrumb{font-size:12px;line-height:1.5;gap:16px}
.column-location-v12 .breadcrumb>[aria-current="page"]{color:var(--column-accent);font-weight:500}
.column-back-v12{display:inline-flex;align-items:center;gap:11px;min-height:35px;font-size:11px;color:#c7badb;white-space:nowrap}
.column-back-v12>span{font-size:19px;transition:transform .25s}
.column-back-v12:is(:hover,:focus-visible)>span{transform:translateX(-3px)}
.column-masthead-v12{padding-top:32px}
.column-banner-v12{position:relative;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);column-gap:6%;overflow:hidden;background:linear-gradient(112deg,#171724ed,#10121edc);border:1px solid #bca6e143;border-radius:8px 8px 42px 8px;padding:40px 47px 0;isolation:isolate}
.column-banner-v12::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--column-accent),#a68cee,#ffb3d9,var(--column-accent));background-size:250% 100%;animation:column-border-flow 7s linear infinite}
.column-banner-v12::after{content:'';position:absolute;right:0;top:0;bottom:0;width:48%;z-index:-1;background:linear-gradient(90deg,#17172400,var(--column-glow)),repeating-linear-gradient(0deg,transparent 0px,transparent 52px,#b1a3d00b 53px),repeating-linear-gradient(90deg,transparent 0px,transparent 52px,#b1a3d00b 53px);mask-image:linear-gradient(90deg,transparent,#000 25%)}
.column-intro-v12{align-self:center;position:relative;z-index:2;padding-bottom:28px}
.column-category-v12{display:flex;align-items:center;flex-wrap:wrap;gap:20px;font:9px/1.6 Inter,'Wangke Sans',sans-serif;letter-spacing:.11em;color:#b8a8ce;margin:0 0 22px}
.column-category-v12>span{border:1px solid #a4aec871;color:var(--column-accent);background:var(--column-glow);border-radius:5px;padding:6px 10px;font-size:10px;letter-spacing:.04em}
.column-masthead-v12 h1{font-size:clamp(37px,3.55vw,52px);line-height:1.35;letter-spacing:-.035em;color:#f3edf9;font-weight:500}
.column-lead-v12{font-size:25px;line-height:1.65;color:var(--column-accent);letter-spacing:-.015em;margin-top:17px;max-width:650px}
.column-summary-v12{font-size:14px;line-height:1.95;color:#b8aec9;max-width:570px;margin-top:15px}
.column-read-v12{display:inline-flex;align-items:center;gap:24px;min-height:41px;border-bottom:1px solid #b8b1d262;font-size:12px;color:#dfd2f0;margin-top:23px;line-height:1.4;padding:5px 0}
.column-read-v12>span{font-size:19px;display:inline-block;color:var(--column-accent);transition:transform .25s}
.column-read-v12:is(:hover,:focus-visible)>span{transform:translateY(3px)}
.column-art-v12{position:relative;min-width:0;display:grid;place-items:center;align-self:stretch;min-height:292px;isolation:isolate;padding:0 0 24px;overflow:clip}
.column-watermark-v12{position:absolute;right:0;top:-40px;z-index:-1;font:400 180px/1.2 Inter,sans-serif;letter-spacing:-.07em;color:transparent;-webkit-text-stroke:1px #b8a8e322;pointer-events:none}
.column-art-v12 .document-art{width:88%;max-width:328px;aspect-ratio:1.25;margin-top:0;overflow:clip}
.column-art-v12 .paper-layer{height:91%;width:68%;left:18%;top:5%;padding:17px}
.column-art-v12 .paper-top{font-size:6px}.column-art-v12 .paper-front>strong{font-size:21px;margin-top:26px}.column-art-v12 .paper-rule{margin-top:15px}.column-art-v12 .paper-front>p{font-size:9px;margin-top:14px}.column-art-v12 .paper-bottom{font-size:7px}.column-art-v12 .paper-middle,.column-art-v12 .paper-back{font-size:8px}
.column-art-v12 .faq-art{width:83%;max-width:303px;aspect-ratio:1.18}
.column-art-v12 .faq-mark{font-size:218px;line-height:1;color:transparent;-webkit-text-stroke-color:var(--column-accent)}
.column-art-v12 .faq-art-label{font-size:7px;right:0;bottom:8%}
.column-signal-v12{position:relative;width:95%;max-width:350px;min-height:270px;display:flex;flex-direction:column;align-items:center;justify-content:center;isolation:isolate}
.column-signal-orbit{position:absolute;inset:10px 5%;border:1px solid #9eb6e433;border-radius:50%;z-index:-1;transform:rotate(-25deg);background:radial-gradient(var(--column-glow),transparent 70%)}
.column-signal-orbit::before{content:'';position:absolute;inset:19px -12px;border:1px dashed #b694ed63;border-radius:50%;animation:inner-orbit 24s linear infinite}
.column-signal-stack{position:relative;width:75%;display:grid;gap:16px}
.column-signal-stack::before{content:'';position:absolute;left:50%;top:10px;bottom:10px;width:1px;background:linear-gradient(var(--column-accent),#cbadf3)}
.column-signal-stack>span{position:relative;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 15px;border:1px solid #bda1df6b;background:linear-gradient(110deg,#171b2c,#191324);box-shadow:0 0 18px #9ea9ff0b;border-radius:7px;font-size:15px;color:#e5d9f5}
.column-signal-stack>span:first-child{transform:translateX(-13px)}.column-signal-stack>span:last-child{transform:translateX(13px)}
.column-signal-stack small{font:8px Inter,sans-serif;color:#9ebee3}.column-signal-stack i{font-size:15px;font-style:normal;color:var(--column-accent)}
.column-signal-v12>p{font:7px Inter,sans-serif;letter-spacing:.1em;color:#b7a1d3;margin-top:20px}
.column-banner-meta-v12{grid-column:1/-1;display:flex;justify-content:space-between;align-items:center;gap:20px;min-height:48px;padding-block:13px;border-top:1px solid #b5a1d127;font-size:9px;line-height:1.7;color:#a697b8}
.inner-page-v12 .reading-layout{padding-top:56px;grid-template-columns:195px minmax(0,1fr);column-gap:7%}
.inner-page-v12 .reading-nav{top:calc(var(--global-header-height) + var(--location-height) + 24px)}
.current-column-v12{padding:0 0 23px;margin:0 0 24px;border-bottom:1px solid #b59cda3f}
.current-column-v12>span{display:block;font-size:9px;line-height:1.6;color:#a795bf;letter-spacing:.05em;margin-bottom:12px}
.current-column-v12>strong{display:block;font-size:19px;line-height:1.5;color:var(--column-accent);font-weight:500}
.inner-page-v12 .reading-nav .toc-label-v12{font-size:11px;line-height:1.65;letter-spacing:0;color:#d2c1e7;margin-bottom:17px}
.inner-page-v12 .reading-nav .toc-label-v12>span{font-size:9px;line-height:1.5;color:#92819f;letter-spacing:0;margin-top:8px}
.inner-page-v12 .reading-nav>a{font-size:11px;gap:12px;padding:11px 0 11px 13px}
.inner-page-v12 .reading-nav .toc-home{font-size:11px;margin-top:27px;padding-left:0}
.inner-page-v12 .reading-nav>a[aria-current="location"]{border-left-color:var(--column-accent);color:var(--column-accent)}
.inner-page-v12 section[id],.inner-page-v12 details[id]{scroll-margin-top:calc(var(--global-header-height) + var(--location-height) + 22px)}
.has-motion .column-banner-v12:not(.is-in-view)::before{animation-play-state:paused}
@keyframes column-border-flow{to{background-position:100% 0}}
@media(max-width:1100px){.column-banner-v12{padding:31px 30px 0;gap:3%;grid-template-columns:1.3fr 1fr}.column-masthead-v12 h1{font-size:39px}.column-lead-v12{font-size:22px}.column-summary-v12{font-size:13px}.column-art-v12{min-height:265px}.column-category-v12{gap:15px;font-size:8px}.column-art-v12 .document-art{width:96%;max-width:280px}.column-art-v12 .paper-front>strong{font-size:19px;margin-top:21px}.column-art-v12 .paper-layer{padding:15px}.column-signal-stack{width:79%}.column-signal-stack>span{font-size:13px;padding:12px}.inner-page-v12 .reading-layout{grid-template-columns:170px minmax(0,1fr);column-gap:5%}.column-watermark-v12{font-size:145px;top:-25px}}
@media(max-width:900px){.inner-page-v12 .reading-layout{display:block;padding-top:33px}.inner-page-v12 .reading-nav{position:static;display:flex;flex-direction:row;flex-wrap:wrap;gap:7px;margin-bottom:32px;padding-bottom:26px}.current-column-v12{display:none}.inner-page-v12 .reading-nav .toc-label-v12{width:100%;font-size:11px;margin-bottom:8px}.inner-page-v12 .reading-nav .toc-label-v12>span{display:inline;margin-left:14px;font-size:9px}.inner-page-v12 .reading-nav>a{padding:8px 11px;border:1px solid #b6a0ce35;gap:8px;font-size:10px}.inner-page-v12 .reading-nav>a[aria-current="location"]{border:1px solid var(--column-accent)}.inner-page-v12 .reading-nav .toc-home{display:none}.column-banner-v12{grid-template-columns:1.35fr 1fr;padding:30px 26px 0}.column-masthead-v12 h1{font-size:34px}.column-lead-v12{font-size:20px}.column-summary-v12{font-size:12px}.column-art-v12 .paper-front>strong{font-size:18px}.column-art-v12 .paper-front>p{font-size:8px}.column-art-v12 .paper-top i{display:none}.column-art-v12 .document-art{aspect-ratio:1.13}.column-signal-stack{width:80%}.column-signal-stack>span{gap:9px}.column-art-v12 .faq-mark{font-size:180px}.column-location-v12 .breadcrumb{font-size:11px}.column-back-v12{font-size:10px}}
@media(max-width:600px){
 .inner-page-v12{--location-height:45px}.column-location-v12>.container{gap:13px}.column-location-v12 .breadcrumb{font-size:10px;gap:9px;flex-wrap:nowrap}.column-location-v12 .breadcrumb>a{color:#b0a3c2;white-space:nowrap}.column-location-v12 .breadcrumb>[aria-current]{font-size:10px;white-space:nowrap}.column-back-v12{font-size:9px;gap:6px;min-height:32px}.column-back-v12>span{font-size:15px}
 .column-masthead-v12{padding-top:22px}.column-banner-v12{grid-template-columns:1fr;padding:26px 23px 0;gap:0;border-radius:8px 8px 30px 8px}.column-banner-v12::after{width:100%;height:55%;top:auto;mask-image:linear-gradient(180deg,transparent,#000 30%)}
 .column-category-v12{font-size:7px;gap:13px;letter-spacing:.07em;margin-bottom:20px}.column-category-v12>span{font-size:9px;padding:5px 8px}.column-masthead-v12 h1{font-size:32px;line-height:1.4}.column-lead-v12{font-size:20px;line-height:1.7;margin-top:16px}.column-summary-v12{font-size:12px;line-height:1.9;margin-top:12px}.column-read-v12{font-size:11px;min-height:36px;gap:24px;margin-top:17px}.column-read-v12>span{font-size:18px}.column-intro-v12{padding-bottom:14px}
 .column-art-v12{min-height:0;max-height:250px;align-self:auto;min-width:0;padding:3px 0 16px;width:100%}
 .column-watermark-v12{font-size:130px;top:-14px;right:0}.column-signal-v12{min-height:215px;width:90%;max-width:260px}.column-signal-stack{width:83%;gap:12px}.column-signal-stack>span{font-size:13px;padding:10px 12px}.column-signal-stack small{font-size:8px}.column-signal-v12>p{font-size:6px;margin-top:16px}.column-signal-orbit{inset:5px 6%}.column-signal-stack>span:first-child{transform:translateX(-8px)}.column-signal-stack>span:last-child{transform:translateX(8px)}
 .column-art-v12 .document-art{width:85%;max-width:248px;aspect-ratio:1.25;margin-top:0}.column-art-v12 .paper-layer{padding:13px;height:90%;top:6%}.column-art-v12 .paper-front>strong{font-size:17px;margin-top:15px}.column-art-v12 .paper-rule{margin-top:12px}.column-art-v12 .paper-front>p{font-size:7px;margin-top:10px}.column-art-v12 .paper-top{font-size:5px}.column-art-v12 .paper-bottom{font-size:6px}.column-art-v12 .paper-bottom b{font-size:18px}.column-art-v12 .paper-middle,.column-art-v12 .paper-back{font-size:6px}
 .column-art-v12 .faq-art{width:80%;max-width:250px;aspect-ratio:1.38;margin-top:10px}.column-art-v12 .faq-mark{font-size:169px}.column-art-v12 .faq-art-label{font-size:5px}
 .column-banner-meta-v12{min-height:43px;font-size:7px;gap:10px;padding-block:11px}.column-banner-meta-v12>span:last-child{white-space:nowrap}.inner-page-v12 .reading-layout{padding-top:29px}.inner-page-v12 .reading-nav .toc-label-v12>span{font-size:8px;margin-left:10px}.inner-page-v12 .reading-nav{margin-bottom:34px}
}
@media(max-width:370px){.column-location-v12 .breadcrumb{gap:7px;font-size:9px}.column-location-v12 .breadcrumb>[aria-current]{font-size:9px}.column-back-v12{font-size:8px}.column-banner-v12{padding-inline:20px}.column-masthead-v12 h1{font-size:30px}.column-category-v12{font-size:6px;gap:10px}.column-lead-v12{font-size:19px}}
@media(prefers-reduced-motion:reduce){.column-banner-v12::before,.column-signal-orbit::before{animation:none}.column-back-v12>span,.column-read-v12>span{transition:none}}
@media print{.inner-page-v12 main{padding-top:0}.column-location-v12,.column-art-v12,.column-read-v12{display:none}.column-banner-v12{display:block;border-color:#aaa;background:#fff;padding:20px}.column-banner-v12::before,.column-banner-v12::after{display:none}.column-masthead-v12 h1,.column-lead-v12,.column-summary-v12{color:#111}.column-masthead-v12{padding-top:0}.inner-page-v12 .reading-layout{display:block;padding-top:20px}.column-banner-meta-v12{color:#555;border-color:#aaa}}