:root{--bg:#100b0d;--text:#f5e9ec;--muted:#b99ca7;--accent:#d64f72;--font:Georgia,'Songti SC','SimSun',serif;--size:18px;--line:color-mix(in srgb,var(--text) 13%,transparent);--panel:color-mix(in srgb,var(--bg) 92%,var(--text));color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.7 -apple-system,BlinkMacSystemFont,'Segoe UI','Microsoft YaHei',sans-serif}body:before{content:'';position:fixed;inset:0;z-index:-2;background:radial-gradient(ellipse at 75% 0%,color-mix(in srgb,var(--accent) 13%,transparent),transparent 55%);pointer-events:none}body.plain:before{display:none}body.grid:before{background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:48px 48px;opacity:.22}button,input,select,textarea{font:inherit}button,a,input,select,textarea{outline-offset:5px}a{color:inherit;text-decoration:none}button{cursor:pointer;color:inherit;background:transparent;border:1px solid var(--line);border-radius:9px;padding:10px 17px;transition:background .2s,border-color .2s}button:hover{background:color-mix(in srgb,var(--accent) 13%,transparent);border-color:var(--accent)}button:disabled{opacity:.4;cursor:not-allowed}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.ghost{border-color:transparent}button.small{padding:5px 10px;font-size:12px}button.danger{color:#ff9aa7}input,select,textarea{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:8px;background:color-mix(in srgb,var(--bg) 90%,black);color:var(--text)}input[type=checkbox],input[type=radio]{width:auto;accent-color:var(--accent)}input[type=color]{height:43px;padding:5px;width:65px}input[type=range]{padding:0}textarea{resize:vertical;min-height:110px}label{display:block;color:var(--muted);font-size:13px}label>input,label>select,label>textarea{margin-top:7px}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-weight:500}h1,h2,.serif{font-family:var(--font)}small,.muted{color:var(--muted)}.shell{max-width:1100px;margin:auto;padding:0 30px}.topbar{height:100px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;gap:13px;align-items:center}.brand-mark{width:36px;height:36px;border:1px solid color-mix(in srgb,var(--accent) 60%,transparent);border-radius:10px;display:grid;place-items:center;color:var(--accent);font-size:23px}.brand strong{font-family:var(--font);font-size:24px;font-weight:500;letter-spacing:4px}.brand small{font-size:9px;letter-spacing:3px;display:block;margin-top:-4px}.toplinks{display:flex;gap:22px;align-items:center;font-size:12px;color:var(--muted)}.toplinks .dot:before{content:'●';color:#9cbd9f;margin-right:7px;font-size:8px}.hero{display:grid;grid-template-columns:1.4fr 1fr;align-items:center;padding:66px 0 45px;gap:30px;min-height:350px}.eyebrow{color:var(--accent);font-size:10px;letter-spacing:3px;margin-bottom:18px;display:block}.hero h1{font-size:clamp(32px,4.2vw,48px);line-height:1.5;letter-spacing:2px;margin-bottom:18px;max-width:620px}.hero p{font-size:14px;color:var(--muted);line-height:1.9;max-width:470px}.hero-art{position:relative;display:grid;place-items:center;height:230px;user-select:none}.orbit{position:absolute;width:270px;height:270px;border:1px solid var(--line);border-radius:50%;transform:scaleY(.72) rotate(-25deg)}.orbit.two{transform:scaleY(.72) rotate(40deg);width:300px;height:300px;opacity:.45}.letter{position:relative;width:225px;height:143px;background:linear-gradient(150deg,#efd8ce,#b89188);transform:rotate(-10deg);border-radius:5px;box-shadow:0 25px 70px #0005}.letter:before{content:'';position:absolute;inset:0;background:linear-gradient(33deg,transparent 49.7%,#946a6670 50%,transparent 50.7%),linear-gradient(-33deg,transparent 49.7%,#946a6670 50%,transparent 50.7%)}.letter:after{content:'笺';position:absolute;left:95px;top:44px;border-radius:50%;background:#a94360;color:#f3d8d7;width:42px;height:42px;display:grid;place-items:center;font-family:serif;box-shadow:1px 3px 5px #0003;border:3px double #c1657d}.art-note{position:absolute;bottom:-6px;letter-spacing:3px;font-size:9px;color:var(--muted)}.section-title{display:flex;align-items:baseline;gap:15px}.section-title h2{font-size:24px;letter-spacing:2px;margin-bottom:20px}.section-title span{font-size:11px;color:var(--muted)}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:5px 0 25px}.tabs{display:flex;gap:6px;flex-wrap:wrap}.tabs button{border:0;padding:7px 13px;font-size:12px;color:var(--muted)}.tabs button.active{background:color-mix(in srgb,var(--accent) 15%,transparent);color:var(--accent)}.tools{display:flex;gap:8px;align-items:center}.tools input{max-width:190px}.tools select{max-width:140px}.tools>*{font-size:12px}.cards{display:grid;grid-template-columns:1fr 1fr;gap:20px}.survey-card{position:relative;border:1px solid var(--line);background:linear-gradient(125deg,color-mix(in srgb,var(--bg) 94%,var(--text)),color-mix(in srgb,var(--bg) 98%,var(--accent)));padding:28px 30px;border-radius:13px;transition:transform .2s,border-color .2s}.survey-card:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--accent) 55%,transparent)}.card-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;font-size:10px;letter-spacing:1px;color:var(--muted)}.badge{background:color-mix(in srgb,var(--accent) 11%,transparent);color:var(--accent);border-radius:5px;padding:3px 9px;font-size:11px}.survey-card h3{font-family:var(--font);font-size:24px;letter-spacing:1px;margin-bottom:9px}.survey-card p{font-size:13px;color:var(--muted);min-height:45px;line-height:1.8}.card-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:19px;margin-top:26px}.card-bottom small{font-size:11px}.card-bottom .open{color:var(--accent);font-size:13px}.cards.list{grid-template-columns:1fr}.cards.list .survey-card p{min-height:0}.catalog-note{margin:28px 0 48px;display:flex;justify-content:center;gap:30px;color:var(--muted);font-size:11px}.footer{padding:24px 0 30px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:11px;color:var(--muted)}.footer button{padding:0;font-size:11px;border:0}.empty{padding:55px 25px;text-align:center;border:1px dashed var(--line);border-radius:12px;color:var(--muted)}.loading{padding:80px;text-align:center}.row{display:flex;gap:12px;align-items:center}.row.between{justify-content:space-between}.stack{display:grid;gap:18px}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}.check{display:flex;align-items:flex-start;gap:10px;color:var(--muted)}.check input{margin-top:6px;flex:none}.notice{padding:16px 20px;border-left:2px solid var(--accent);background:color-mix(in srgb,var(--accent) 7%,transparent);font-size:13px;color:var(--muted);line-height:1.9;border-radius:0 8px 8px 0}.panel{padding:26px;border:1px solid var(--line);border-radius:12px;background:var(--panel)}.survey-shell{max-width:820px;margin:auto;padding:0 30px}.survey-intro{padding:70px 0}.survey-intro h1{font-size:36px;margin:22px 0}.survey-intro .description{font-size:var(--size);font-family:var(--font);color:var(--muted)}.intro-specs{display:flex;gap:30px;margin:30px 0}.intro-specs strong{display:block;font-size:23px;font-weight:400}.intro-specs small{font-size:11px}.progress-head{padding:30px 0 20px}.progress-head h2{font-size:19px;margin:0}.progress{height:3px;background:var(--line);border-radius:3px;margin:22px 0 10px;overflow:hidden}.progress i{display:block;height:100%;background:var(--accent);transition:width .3s}.question-body{padding:45px 0 30px;min-height:360px}.question-body h1{font-size:calc(var(--size) * 1.6);line-height:1.6;margin-top:18px}.question-body .description{color:var(--muted);font-size:14px}.question-body textarea,.question-body input[type=text]{font-family:var(--font);font-size:var(--size);background:transparent}.option{display:flex;align-items:center;gap:14px;border:1px solid var(--line);border-radius:9px;padding:15px 18px;color:var(--text);cursor:pointer;margin:10px 0;font-family:var(--font);font-size:var(--size)}.option:has(input:checked){border-color:var(--accent);background:color-mix(in srgb,var(--accent) 9%,transparent)}.question-nav{display:flex;justify-content:space-between;gap:12px;padding:22px 0;border-top:1px solid var(--line)}.answer-grid{display:flex;gap:9px;flex-wrap:wrap;margin:15px 0}.answer-grid button{min-width:40px;padding:5px}.answer-grid .done{background:color-mix(in srgb,var(--accent) 22%,transparent)}.answer-grid .current{border-color:var(--accent)}.survey-tools{border-top:1px solid var(--line);margin-top:15px;padding:22px 0;font-size:12px}.survey-tools .row{flex-wrap:wrap}.survey-tools input[type=range]{width:100px}.floating-words{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}.floating-words span{position:absolute;opacity:0;font-family:var(--font);animation:floatword 16s ease-in-out infinite;white-space:nowrap}@keyframes floatword{0%,100%{opacity:0;transform:translateY(35px) rotate(-6deg)}35%,65%{opacity:.11;transform:translateY(-25px) rotate(4deg)}}.success{padding:70px 0;text-align:center}.success .seal{font-size:40px;width:90px;height:90px;border:1px solid var(--accent);border-radius:50%;display:grid;place-items:center;margin:0 auto 30px;color:var(--accent)}.success h1{font-size:35px}.receipt{letter-spacing:3px;font-family:monospace;color:var(--accent);font-size:20px;margin:25px}.admin-layout{display:grid;grid-template-columns:225px 1fr;min-height:100vh}.sidebar{border-right:1px solid var(--line);padding:30px 20px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column}.sidebar .brand{padding:0 8px;margin-bottom:45px}.sidebar .brand strong{font-size:21px}.sidebar nav{display:grid;gap:9px}.sidebar nav button{text-align:left;border:0;color:var(--muted);padding:12px 16px}.sidebar nav button.active{color:var(--accent);background:color-mix(in srgb,var(--accent) 13%,transparent)}.sidebar .bottom{margin-top:auto;display:grid;gap:10px;font-size:12px;color:var(--muted)}.admin-main{min-width:0;max-width:1400px;padding:38px 42px;width:100%}.admin-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px;gap:12px}.admin-heading h1{font-size:29px;margin:0}.admin-heading p{margin:5px 0 0;color:var(--muted);font-size:12px}.admin-heading .row{flex-wrap:wrap}.admin-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:25px 0}.stat{border:1px solid var(--line);border-radius:10px;padding:19px 23px}.stat small{font-size:12px}.stat strong{display:block;font-size:30px;font-weight:400;margin-top:4px}.editor-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:24px}.question-editor{padding:22px;margin-top:15px;border:1px solid var(--line);border-radius:10px}.question-editor .row{margin-bottom:14px}.question-editor .row select{max-width:140px}.question-editor .row .spacer{flex:1}.question-editor .row button{padding:4px 9px}.preview-panel{position:sticky;top:20px;height:fit-content}.preview-card{padding:27px 22px;min-height:230px;border-radius:10px;border:1px solid #ffffff20;margin-top:15px}.preview-card h3{font-family:var(--font);font-size:24px}.preview-card p{font-size:13px}.color-row{display:flex;gap:8px;align-items:center}.color-row input[type=text]{max-width:120px}.color-row label{width:70px}.font-preview{padding:24px;border:1px solid var(--line);border-radius:10px}.responses{display:grid;grid-template-columns:minmax(260px,.8fr) minmax(320px,1.2fr);gap:22px;margin-top:22px}.response-item{width:100%;text-align:left;margin-bottom:9px;padding:15px 18px}.response-item.active{border-color:var(--accent)}.response-item strong{display:block;font-weight:500}.response-item small{font-size:11px}.answer-detail{padding:18px 0;border-bottom:1px solid var(--line)}.answer-detail h3{font-size:14px;color:var(--muted);margin-bottom:8px}.answer-detail p{font-family:var(--font);font-size:17px;white-space:pre-wrap;overflow-wrap:anywhere}.media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.media-grid .panel{padding:18px;min-width:0}.media-grid img,.media-grid video,.file-preview img,.file-preview video{max-width:100%;max-height:230px;border-radius:8px}.media-grid audio,.file-preview audio{width:100%}.file-preview{padding:15px;border:1px solid var(--line);margin-top:15px;border-radius:8px}.file-preview .row{margin-top:12px;flex-wrap:wrap}.login{max-width:420px;margin:90px auto;padding:35px}.login .brand{justify-content:center;margin-bottom:30px}.error{color:#ff9aa7;font-size:13px}.demo-banner{background:#37252b;color:#ecd7dd;text-align:center;padding:9px 15px;font-size:12px;border-bottom:1px solid #71505c}.demo-banner button{font-size:11px;padding:2px 7px}.tag-count{font-size:11px;border:1px solid var(--line);border-radius:20px;padding:2px 10px}#toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);padding:12px 20px;border:1px solid var(--accent);border-radius:10px;background:var(--bg);box-shadow:0 5px 25px #0006;max-width:90vw;z-index:1000;display:none}dialog{background:var(--bg);color:var(--text);border:1px solid var(--line);border-radius:14px;max-width:min(700px,92vw);width:600px;padding:30px;max-height:85vh}dialog::backdrop{background:#0009;backdrop-filter:blur(5px)}dialog h2{font-size:25px}dialog .actions{display:flex;justify-content:flex-end;gap:10px;margin-top:25px}dialog pre{white-space:pre-wrap;font-size:12px;color:var(--muted)}.import-preview{max-height:260px;overflow:auto;margin:18px 0}.import-preview p{padding:10px;border-bottom:1px solid var(--line)}.status-dot{color:#a9c5aa}code{word-break:break-word}a.link{color:var(--accent)}
@media(max-width:1100px){.editor-layout{grid-template-columns:1fr}.preview-panel{position:static}.responses{grid-template-columns:1fr}.media-grid{grid-template-columns:1fr 1fr}.admin-main{padding:28px}.hero-art{transform:scale(.85)}}
@media(max-width:720px){.shell,.survey-shell{padding:0 20px}.topbar{height:78px}.toplinks .dot{display:none}.hero{grid-template-columns:1fr;padding-top:40px;gap:0;min-height:0}.hero-art{display:none}.hero h1{font-size:34px}.hero p{font-size:13px}.toolbar{flex-direction:column;align-items:stretch}.tools{flex-wrap:wrap}.tools input{flex:1;max-width:none;min-width:120px}.cards{grid-template-columns:1fr}.survey-card{padding:25px}.catalog-note{gap:15px;font-size:10px;flex-wrap:wrap}.footer{gap:20px;flex-wrap:wrap}.admin-layout{grid-template-columns:1fr}.sidebar{position:static;height:auto;padding:20px;border-right:0;border-bottom:1px solid var(--line)}.sidebar .brand{margin-bottom:15px}.sidebar nav{display:flex;flex-wrap:wrap;gap:3px}.sidebar nav button{padding:8px 11px;font-size:12px}.sidebar .bottom{display:flex;margin-top:10px;justify-content:flex-end}.admin-main{padding:24px 18px}.admin-heading{align-items:flex-start;flex-wrap:wrap}.admin-heading h1{font-size:25px}.two-col{grid-template-columns:1fr}.admin-stats{gap:8px}.stat{padding:14px}.stat strong{font-size:26px}.responses{display:block}.response-detail{margin-top:20px}.media-grid{grid-template-columns:1fr}.survey-intro{padding:40px 0}.survey-intro h1{font-size:29px}.question-body{padding:25px 0;min-height:330px}.question-body h1{font-size:25px}.question-nav{position:sticky;bottom:0;background:var(--bg);padding-bottom:max(18px,env(safe-area-inset-bottom));z-index:5}.row{gap:8px}.question-editor .row{flex-wrap:wrap}.question-editor{padding:16px}.panel{padding:20px}.login{margin:45px 18px;padding:25px}.survey-tools .row{gap:14px}dialog{padding:22px}.intro-specs{gap:25px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}.floating-words{display:none}}
/* 手机是主要使用端；桌面保留双列扩展。 */
@media(max-width:720px){button{min-height:44px}input,textarea,select{font-size:16px}.tools>*{font-size:14px}.tabs button{min-height:42px;font-size:13px}.hero{padding:38px 0 24px}.hero h1{font-size:34px;max-width:310px;line-height:1.6}.hero p{font-size:14px}.section-title h2{font-size:23px}.survey-card{padding:25px 23px}.survey-card h3{font-size:25px}.survey-card p{font-size:14px;min-height:0}.card-meta{margin-bottom:18px}.card-bottom{margin-top:22px}.card-bottom .open{font-size:15px}.card-bottom small{font-size:12px}.admin-layout{padding-bottom:92px}.sidebar{padding:20px}.sidebar .brand{margin:0}.sidebar nav{position:fixed;bottom:0;left:0;right:0;z-index:20;background:var(--bg);border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(4,1fr);padding:8px 8px max(8px,env(safe-area-inset-bottom));box-shadow:0 -10px 24px #0002}.sidebar nav button{text-align:center;font-size:11px;min-height:56px;padding:4px;border-radius:8px}.sidebar nav button span{display:block;font-size:20px;line-height:1.4}.sidebar .bottom{position:absolute;right:16px;top:17px;display:flex;flex-direction:column;gap:0;text-align:right;margin:0}.sidebar .bottom a{font-size:11px}.sidebar .bottom button{min-height:30px}.admin-heading>[data-act=save-site],.admin-heading>.row>[data-act=save]{position:fixed;bottom:90px;right:18px;z-index:22;box-shadow:0 5px 25px #0007;min-height:46px}.editor-layout{gap:18px}.question-editor .row button{min-width:36px}.question-editor input,.question-editor textarea{font-size:16px}.question-editor .row .check{font-size:12px}.question-editor .row select{max-width:110px}.question-nav button{min-height:50px;font-size:16px;min-width:130px}.question-body textarea{min-height:180px}.intro-specs{gap:20px;flex-wrap:wrap}.intro-specs strong{font-size:20px}.survey-intro>[data-act=begin]{width:100%;min-height:52px}.check{font-size:14px}.check input{width:18px;height:18px}.notice{font-size:14px}.option{min-height:58px;font-size:18px}.footer{font-size:12px}.footer button{font-size:12px}.response-item small{font-size:12px}.preview-panel{margin-bottom:20px}.login{margin-left:0;margin-right:0}.demo-banner{font-size:11px}.demo-banner button{min-height:30px}#toast{bottom:100px;width:max-content;max-width:90vw}.survey-tools{padding-bottom:35px}}