:root {
  --serif:"Songti SC","STSong","Noto Serif SC","Source Han Serif SC",Georgia,serif;
  --sans:"Microsoft YaHei UI","PingFang SC","Noto Sans SC",system-ui,sans-serif;
  --paper:#edf4f1; --paper-deep:#dfeae6; --surface:rgba(255,255,255,.64); --surface-strong:rgba(255,255,255,.84);
  --ink:#102027; --muted:#5d6f75; --line:rgba(17,58,66,.13); --accent:#17616b; --accent-deep:#102f39; --gold:#b89a5d;
  --shadow:0 22px 60px rgba(15,51,59,.10); --header-h:64px; --max:1280px; color-scheme:light;
}
html[data-theme="day"] { --paper:#f7f3e8;--paper-deep:#ede6d6;--surface:rgba(255,253,247,.69);--surface-strong:rgba(255,254,249,.9);--ink:#28241d;--muted:#71695d;--line:rgba(85,67,41,.14);--accent:#82603a;--accent-deep:#493824;--gold:#a87a3c;--shadow:0 22px 60px rgba(85,64,31,.10); }
html[data-theme="night"] { --paper:#111a1a;--paper-deep:#182322;--surface:rgba(33,47,45,.74);--surface-strong:rgba(38,53,51,.91);--ink:#eee9de;--muted:#a3aeaa;--line:rgba(235,229,216,.13);--accent:#b9965b;--accent-deep:#c6a467;--gold:#c8a768;--shadow:0 26px 72px rgba(0,0,0,.28);color-scheme:dark; }
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;min-width:320px;color:var(--ink);background:var(--paper);font-family:var(--sans);-webkit-font-smoothing:antialiased} button,input,textarea,select{font:inherit} button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{color:inherit}img{max-width:100%}[hidden]{display:none!important}:focus-visible{outline:2px solid #d2ad64;outline-offset:3px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;z-index:100;top:8px;left:8px;padding:10px 14px;color:#111;background:#fff;transform:translateY(-160%)}.skip-link:focus{transform:none}
.site-header{position:fixed;z-index:50;inset:0 0 auto;height:var(--header-h);color:#fff9e9;transition:.22s}.site-header:after{content:"";position:absolute;z-index:-1;inset:0;background:linear-gradient(90deg,transparent,rgba(3,16,22,.26) 14% 86%,transparent);backdrop-filter:blur(12px) saturate(1.05)}.site-header.paper-header{color:var(--ink);background:color-mix(in srgb,var(--paper) 82%,transparent);border-bottom:1px solid var(--line);box-shadow:0 10px 30px rgba(15,48,55,.07);backdrop-filter:blur(22px) saturate(1.1)}.site-header.paper-header:after{display:none}.site-nav{display:flex;align-items:center;justify-content:space-between;gap:16px;width:min(calc(100% - 32px),var(--max));height:100%;margin:auto}.brand{display:inline-flex;flex:0 0 auto;align-items:center;gap:10px}.brand-seal{display:grid;place-items:center;width:36px;height:36px;border:1px solid rgba(255,250,232,.6);border-radius:50%;color:#0d2630;background:#f8f2de;font:700 20px/1 var(--serif);box-shadow:0 7px 22px rgba(0,0,0,.16)}.paper-header .brand-seal{color:#f8f1df;background:var(--accent-deep);border-color:transparent}.brand-name{font:700 19px/1 var(--serif);letter-spacing:.08em}.nav-links{display:flex;align-items:center;justify-content:center;gap:4px;margin-left:auto}.nav-links a{position:relative;padding:10px 15px;border-radius:999px;color:rgba(255,250,235,.78);font-size:13px;font-weight:650;text-shadow:0 1px 12px rgba(0,0,0,.48)}.nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.16)}.paper-header .nav-links a{color:var(--muted);text-shadow:none}.paper-header .nav-links a:hover,.paper-header .nav-links a.active{color:var(--ink);background:color-mix(in srgb,var(--accent) 10%,transparent)}.nav-actions{display:flex;align-items:center;gap:8px}.theme-switcher{display:grid;grid-template-columns:repeat(3,34px);padding:4px;border:1px solid rgba(255,255,255,.2);border-radius:999px;background:rgba(4,18,23,.24);backdrop-filter:blur(10px)}.theme-switcher button{height:31px;border:0;border-radius:999px;color:rgba(255,250,235,.72);background:transparent;font-size:11px;cursor:pointer}.theme-switcher button.active{color:#102027;background:#f7f1df;box-shadow:0 7px 22px rgba(0,0,0,.18)}.paper-header .theme-switcher{border-color:var(--line);background:var(--surface)}.paper-header .theme-switcher button{color:var(--muted)}.paper-header .theme-switcher button.active{color:#fff;background:var(--accent-deep)}.web-status{display:inline-flex;align-items:center;gap:6px;min-height:39px;padding:0 14px;border:1px solid rgba(255,255,255,.25);border-radius:999px;font-size:11px;font-weight:650}.web-status i{width:6px;height:6px;border-radius:50%;background:#79d0b1;box-shadow:0 0 0 4px rgba(121,208,177,.13)}.paper-header .web-status{border-color:var(--line);background:var(--surface)}.menu-button{display:none;width:40px;height:40px;border:0;border-radius:50%;background:transparent;cursor:pointer}.menu-button span{display:block;width:18px;height:1px;margin:4px auto;background:currentColor}
.hero-view{position:relative;display:grid;place-items:center;min-height:100svh;overflow:hidden;color:#fff9e8;background:#051622}.hero-bg{position:absolute;inset:-5%;background:url("assets/xuanjian-cloudsea-night-v1.png") center/cover;animation:cloud-drift 23s ease-in-out infinite alternate}.hero-bg-near{position:absolute;inset:0;background:radial-gradient(ellipse at 48% 44%,rgba(234,217,175,.18),transparent 20%),linear-gradient(105deg,rgba(13,42,50,.22),transparent 48% 58%,rgba(4,20,28,.22));mix-blend-mode:screen}.hero-vignette{position:absolute;inset:0;background:linear-gradient(180deg,rgba(3,15,22,.27),rgba(3,15,22,.02) 35%,rgba(3,15,22,.18) 68%,rgba(3,15,22,.74)),radial-gradient(circle at 50% 42%,transparent 0 20%,rgba(1,9,13,.28) 80%)}html[data-theme="day"] .hero-bg{background-image:url("assets/xuanjian-cloudsea-day-v1.png");filter:saturate(.78) brightness(1.02)}html[data-theme="day"] .hero-vignette{background:linear-gradient(180deg,rgba(36,33,25,.12),transparent 38%,rgba(5,19,22,.2) 67%,rgba(3,14,18,.64)),radial-gradient(circle at 50% 42%,transparent 0 20%,rgba(33,30,23,.18) 84%)}html[data-theme="night"] .hero-bg{filter:saturate(.68) brightness(.58) contrast(1.08)}
.hero-content{position:relative;z-index:2;width:min(880px,calc(100% - 40px));padding-top:42px;text-align:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 27px;padding:7px 14px;border:1px solid rgba(222,194,132,.43);border-radius:999px;color:#dfc58c;background:rgba(6,25,31,.34);font-size:11px;letter-spacing:.1em;backdrop-filter:blur(9px)}.hero-content h1{margin:0;font:650 clamp(78px,10vw,130px)/.94 var(--serif);letter-spacing:.12em;text-indent:.12em;text-shadow:0 12px 55px rgba(0,0,0,.34)}.roman-title{margin:21px 0 0;color:#d8bd80;font:600 11px/1.3 Georgia,serif;letter-spacing:.52em}.taiji-mark{position:relative;display:block;width:21px;height:21px;margin:18px auto 0;border:1px solid rgba(239,224,187,.76);border-radius:50%;overflow:hidden}.taiji-mark:before,.taiji-mark:after{content:"";position:absolute;left:0;width:100%;height:50%}.taiji-mark:before{top:0;background:rgba(239,224,187,.85)}.taiji-mark:after{bottom:0;background:rgba(5,25,31,.72)}.taiji-mark i:before,.taiji-mark i:after{content:"";position:absolute;z-index:2;top:7px;width:7px;height:7px;border-radius:50%}.taiji-mark i:before{left:3px;background:rgba(5,25,31,.84)}.taiji-mark i:after{right:3px;background:#e9dbb8}.hero-lead{margin:22px 0 0;font:600 clamp(18px,2vw,22px)/1.6 var(--serif);letter-spacing:.05em}.hero-copy{max-width:640px;margin:8px auto 0;color:rgba(255,250,235,.76);font-size:14px;line-height:1.8}.hero-actions{display:flex;justify-content:center;gap:12px;margin-top:29px}.primary-button,.ghost-button,.danger-button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:44px;padding:0 21px;border:1px solid transparent;border-radius:999px;font-size:13px;font-weight:650;cursor:pointer;transition:transform .16s,background .16s,border-color .16s}.primary-button{color:#f8fbf7;background:linear-gradient(#1d5962,#102f39);box-shadow:inset 0 1px rgba(255,255,255,.17),0 14px 32px rgba(12,48,58,.22)}.primary-button:hover{transform:translateY(-1px);background:#194f59}.ghost-button{border-color:var(--line);background:var(--surface)}.ghost-button:hover{border-color:color-mix(in srgb,var(--accent) 50%,transparent);background:var(--surface-strong)}.hero-primary,.hero-secondary{min-width:148px;min-height:48px}.hero-secondary{color:#fff9ea;border-color:rgba(255,255,255,.26);background:rgba(5,23,29,.32);backdrop-filter:blur(10px)}.hero-secondary:hover{border-color:rgba(221,193,131,.55);background:rgba(5,23,29,.48)}.hero-glyphs{position:absolute;z-index:1;top:16%;bottom:18%;display:flex;flex-direction:column;justify-content:space-between;color:rgba(220,194,137,.38);font:500 18px/1 var(--serif);writing-mode:vertical-rl;letter-spacing:.38em}.hero-glyphs-left{left:11%}.hero-glyphs-right{right:11%}.hero-scroll{position:absolute;z-index:3;bottom:24px;left:50%;display:grid;place-items:center;gap:6px;color:rgba(255,255,255,.53);font-size:9px;letter-spacing:.18em;transform:translateX(-50%)}.hero-scroll span{width:1px;height:22px;background:linear-gradient(transparent,rgba(255,255,255,.55))}
.home-intro{min-height:86vh;padding:118px 0 130px;background:radial-gradient(circle at 80% 10%,color-mix(in srgb,var(--gold) 9%,transparent),transparent 28rem),var(--paper)}.section-shell{width:min(calc(100% - 48px),1120px);margin:auto}.intro-grid{display:grid;grid-template-columns:1.2fr .8fr;align-items:end;gap:90px}.section-kicker{margin:0 0 13px;color:var(--accent);font-size:10px;font-weight:760;letter-spacing:.22em;text-transform:uppercase}.intro-grid h2{margin:0;font:600 clamp(35px,5vw,58px)/1.28 var(--serif);letter-spacing:-.03em}.intro-copy p{margin:0;color:var(--muted);line-height:2}.text-link{display:inline-block;margin-top:25px;padding-bottom:5px;border-bottom:1px solid currentColor;font-size:13px;font-weight:650}.feature-rail{display:grid;grid-template-columns:repeat(3,1fr);margin-top:104px;border:1px solid var(--line);background:var(--surface)}.feature-rail article{min-height:240px;padding:31px 35px;border-right:1px solid var(--line)}.feature-rail article:last-child{border:0}.feature-rail span{color:var(--gold);font:600 11px/1 Georgia,serif;letter-spacing:.12em}.feature-rail h3{margin:50px 0 11px;font:600 23px/1.35 var(--serif)}.feature-rail p{margin:0;color:var(--muted);font-size:13px;line-height:1.85}
.paper-view{min-height:100svh;padding:calc(var(--header-h) + 38px) 0 92px;background:radial-gradient(circle at 86% 6%,color-mix(in srgb,var(--gold) 10%,transparent),transparent 27rem),linear-gradient(145deg,color-mix(in srgb,var(--surface) 38%,transparent),transparent 45%),var(--paper)}.page-mast{width:min(calc(100% - 48px),1180px);margin:0 auto 32px;text-align:center}.page-mast>p{margin:0 0 10px;color:var(--accent);font-size:10px;font-weight:750;letter-spacing:.24em}.page-mast h1{margin:0 0 8px;font:600 clamp(38px,5vw,57px)/1.12 var(--serif);letter-spacing:.02em}.page-mast>span{color:var(--muted);font-size:13px}
.tools-view{padding-top:calc(var(--header-h) + 24px)}.gateway-shell{display:grid;grid-template-columns:1.35fr .65fr;gap:12px;width:min(calc(100% - 32px),1420px);margin:0 auto 12px}.gateway-card{position:relative;display:flex;align-items:end;justify-content:space-between;gap:24px;min-height:208px;padding:31px 34px;overflow:hidden;border:1px solid var(--line);border-radius:13px;box-shadow:inset 0 1px rgba(255,255,255,.56)}.gateway-card:after{content:"";position:absolute;right:-4%;bottom:-70%;width:280px;height:280px;border:1px solid rgba(255,255,255,.2);border-radius:50%;box-shadow:0 0 0 28px rgba(255,255,255,.04),0 0 0 58px rgba(255,255,255,.03)}.gateway-primary{color:#f6f2e6;background:linear-gradient(120deg,rgba(6,34,44,.97),rgba(16,65,73,.88)),url("assets/xuanjian-cloudsea-night-v1.png") center 44%/cover}.gateway-secondary{color:#27302d;background:linear-gradient(125deg,rgba(249,244,229,.94),rgba(218,226,218,.86)),url("assets/xuanjian-cloudsea-day-v1.png") center 35%/cover}.gateway-card>div,.gateway-card>a,.gateway-card>button{position:relative;z-index:2}.gateway-card p{margin:0 0 10px;color:#d4b872;font-size:10px;font-weight:750;letter-spacing:.2em}.gateway-card h1,.gateway-card h2{margin:0 0 8px;font:600 clamp(30px,3.2vw,48px)/1.1 var(--serif)}.gateway-card span{color:rgba(245,243,232,.69);font-size:12px}.gateway-secondary p{color:#8d6938}.gateway-secondary span{color:#65716c}.gateway-card button,.gateway-card>a{display:inline-flex;flex:0 0 auto;align-items:center;gap:15px;min-height:42px;padding:0 16px;border:1px solid rgba(255,255,255,.24);border-radius:999px;color:inherit;background:rgba(255,255,255,.09);font-size:12px;cursor:pointer}.gateway-secondary>a{border-color:rgba(44,59,52,.18);background:rgba(255,255,255,.42)}
.tools-shell{display:grid;grid-template-columns:232px minmax(0,1fr);width:min(calc(100% - 32px),1420px);min-height:760px;margin:auto;border:1px solid var(--line);border-radius:13px;background:color-mix(in srgb,var(--surface) 74%,transparent);box-shadow:var(--shadow);overflow:hidden}.tool-sidebar{display:flex;flex-direction:column;padding:24px 18px;border-right:1px solid var(--line);background:color-mix(in srgb,var(--surface) 68%,transparent)}.sidebar-title{display:flex;align-items:center;gap:12px;padding:0 6px 20px;border-bottom:1px solid var(--line)}.sidebar-title>span{display:grid;place-items:center;width:42px;height:42px;border-radius:9px;color:#f7f0db;background:linear-gradient(#285864,#173842);font:600 22px/1 var(--serif)}.sidebar-title strong,.sidebar-title small{display:block}.sidebar-title strong{font:600 19px/1.25 var(--serif)}.sidebar-title small{margin-top:3px;color:var(--muted);font-size:10px}.sidebar-heading{margin:20px 10px 7px;color:var(--muted);font-size:10px;font-weight:730;letter-spacing:.12em}.category-list{display:grid;gap:5px}.category-list button{display:flex;align-items:center;justify-content:space-between;min-height:41px;padding:0 11px;border:1px solid transparent;border-radius:8px;background:transparent;font-size:13px;cursor:pointer}.category-list button span:last-child{display:grid;place-items:center;min-width:25px;height:20px;padding:0 6px;border-radius:999px;color:var(--accent);background:color-mix(in srgb,var(--accent) 9%,transparent);font-size:10px}.category-list button:hover,.category-list button.active{color:var(--ink);background:var(--surface-strong);border-color:var(--line);box-shadow:inset 0 1px rgba(255,255,255,.55)}.sidebar-flow{display:grid;gap:11px;margin-top:24px;padding:17px 7px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.sidebar-flow p{display:grid;grid-template-columns:25px 1fr;gap:9px;margin:0}.sidebar-flow b{color:var(--gold);font:600 10px/1.55 Georgia,serif}.sidebar-flow span{color:var(--muted);font-size:10px;line-height:1.55}.sidebar-flow strong{display:block;margin-bottom:2px;color:var(--ink);font-size:11px}.sidebar-note{margin-top:auto;padding:18px 7px 2px}.sidebar-note>span{color:var(--accent);font-size:9px;font-weight:750;letter-spacing:.15em}.sidebar-note p{margin:7px 0 0;color:var(--muted);font-size:10px;line-height:1.7}.tool-stage{min-width:0;padding:29px clamp(20px,3vw,38px) 42px}.tool-heading-row{display:flex;align-items:end;justify-content:space-between;gap:20px}.tool-heading-row h2{margin:0 0 6px;font:600 clamp(29px,3vw,40px)/1.2 var(--serif)}.tool-heading-row>div>p:last-child{margin:0;color:var(--muted);font-size:12px}.view-switch{display:grid;grid-template-columns:repeat(2,36px);gap:3px;padding:3px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}.view-switch button{height:34px;border:0;border-radius:6px;color:var(--muted);background:transparent;cursor:pointer}.view-switch button.active{color:#fff;background:var(--accent-deep);box-shadow:0 7px 18px rgba(15,54,62,.18)}.search-box{display:flex;align-items:center;gap:11px;height:48px;margin-top:22px;padding:0 13px;border:1px solid var(--line);border-radius:8px;background:var(--surface-strong);box-shadow:inset 0 1px rgba(255,255,255,.65)}.search-box>span{color:var(--muted);font-size:21px}.search-box input{min-width:0;flex:1;border:0;outline:0;color:var(--ink);background:transparent;font-size:13px}.search-box input::placeholder{color:color-mix(in srgb,var(--muted) 80%,transparent)}.search-box kbd{padding:3px 7px;border:1px solid var(--line);border-radius:5px;color:var(--muted);background:var(--surface);font-size:9px}.tool-quick{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px;margin-top:10px}.quick-item{display:grid;place-items:center;gap:4px;min-width:0;min-height:63px;padding:7px 3px;border:1px solid var(--line);border-radius:8px;background:var(--surface);cursor:pointer}.quick-item:hover{background:var(--surface-strong)}.quick-item i{display:grid;place-items:center;width:27px;height:27px;border-radius:7px;color:var(--accent-deep);background:color-mix(in srgb,var(--accent) 10%,var(--surface));font:600 14px/1 var(--serif);font-style:normal}.quick-item span{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:10px;font-weight:650}.tool-layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:11px;margin-top:11px}.tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.tool-grid.list-mode{grid-template-columns:1fr}.tool-card{position:relative;min-height:165px;padding:17px;border:1px solid var(--line);border-radius:8px;background:linear-gradient(var(--surface-strong),var(--surface));box-shadow:inset 0 1px rgba(255,255,255,.7);cursor:pointer;transition:transform .16s,border-color .16s,box-shadow .16s}.tool-card:hover,.tool-card.selected{z-index:1;border-color:color-mix(in srgb,var(--accent) 35%,var(--line));background:var(--surface-strong);box-shadow:0 13px 28px rgba(16,55,63,.11),inset 0 1px rgba(255,255,255,.8)}.tool-card:hover{transform:translateY(-2px)}.tool-icon{display:grid;place-items:center;width:36px;height:36px;border-radius:8px;color:var(--accent-deep);background:color-mix(in srgb,var(--accent) 11%,var(--surface));font:600 18px/1 var(--serif)}.favorite-button{position:absolute;top:14px;right:14px;width:28px;height:28px;border:0;border-radius:50%;color:color-mix(in srgb,var(--muted) 70%,transparent);background:transparent;font-size:18px;cursor:pointer}.favorite-button:hover{background:color-mix(in srgb,var(--gold) 10%,transparent)}.favorite-button.active{color:var(--gold)}.tool-card h2{margin:20px 0 5px;font:600 18px/1.3 var(--serif)}.tool-card p{margin:0;color:var(--muted);font-size:11px;line-height:1.58}.tool-card small{position:absolute;right:15px;bottom:13px;color:var(--muted);font-size:9px}.tool-grid.list-mode .tool-card{display:grid;grid-template-columns:42px 125px 1fr 86px;align-items:center;gap:12px;min-height:79px}.tool-grid.list-mode .tool-card h2{margin:0}.tool-grid.list-mode .tool-card small{position:static;text-align:right}.tool-grid.list-mode .favorite-button{top:25px}.tool-inspector{position:sticky;top:calc(var(--header-h) + 16px);align-self:start;display:grid;gap:10px;min-height:410px;padding:17px;border:1px solid var(--line);border-radius:8px;background:linear-gradient(var(--surface-strong),var(--surface));box-shadow:inset 0 1px rgba(255,255,255,.75)}.inspector-head{display:flex;align-items:center;justify-content:space-between}.inspector-head>span{display:inline-flex;align-items:center;gap:7px;font-size:11px;font-weight:720}.inspector-head small{padding:4px 7px;border:1px solid var(--line);border-radius:999px;color:var(--muted);background:var(--surface);font-size:9px}.inspector-tool,.inspector-prep,.inspector-note{padding:12px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}.inspector-tool .tool-icon{margin-bottom:18px}.inspector-tool p{margin:0 0 3px;color:var(--muted);font-size:9px;letter-spacing:.13em}.inspector-tool h2{margin:0 0 7px;font:600 24px/1.2 var(--serif)}.inspector-tool>span{color:var(--muted);font-size:11px;line-height:1.6}.inspector-prep h3{margin:0 0 9px;font-size:11px}.inspector-prep ul{display:grid;gap:7px;margin:0;padding:0;list-style:none}.inspector-prep li{position:relative;padding-left:12px;color:var(--muted);font-size:10px;line-height:1.55}.inspector-prep li:before{content:"";position:absolute;top:.55em;left:0;width:4px;height:4px;border-radius:50%;background:var(--accent)}.inspector-note{color:var(--muted);font-size:10px;line-height:1.65}.inspector-actions{display:grid;gap:7px}.inspector-actions button{width:100%;border-radius:8px}.empty-state{grid-column:1/-1;padding:66px 20px;border:1px solid var(--line);border-radius:9px;background:var(--surface);text-align:center}.empty-state>span{display:grid;place-items:center;width:54px;height:54px;margin:auto;border:1px solid var(--gold);border-radius:50%;font:600 24px/1 var(--serif)}.empty-state h2{margin:19px 0 7px;font:600 24px/1.3 var(--serif)}.empty-state p{margin:0 0 21px;color:var(--muted);font-size:13px}
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@media (max-width:1180px){.nav-links a{padding-inline:11px}.tool-layout{grid-template-columns:minmax(0,1fr) 225px}.tool-quick{grid-template-columns:repeat(5,1fr)}.tool-quick .quick-item:nth-child(n+6){display:none}.ask-workbench{grid-template-columns:190px minmax(0,1fr)}.workbench-note{display:none}.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
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