:root{--ps-bg:#eee9df;--ps-surface:#fffdf8;--ps-ink:#302f29;--ps-muted:#6f695f;--ps-line:#d5c8b5;--ps-green:#2f7e65;--ps-green-dark:#246550;--ps-red:#a63b32;--ps-gold:#b38a49}
*{box-sizing:border-box}
.period-page{margin:0;color:var(--ps-ink);background:radial-gradient(circle at 14% 0,rgba(207,78,62,.07),transparent 28%),radial-gradient(circle at 90% 8%,rgba(47,126,101,.08),transparent 25%),var(--ps-bg);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}
.period-header{display:flex;max-width:1180px;margin:0 auto;align-items:center;justify-content:space-between;gap:20px;padding:22px clamp(18px,4vw,38px);border-bottom:1px solid rgba(181,161,130,.55)}
.period-brand{display:flex;align-items:center;gap:11px;color:var(--ps-ink);font-weight:780;text-decoration:none}
.period-brand-seal{display:grid;width:42px;height:42px;place-items:center;border:1px solid #d6b15f;border-radius:50%;color:#fff8eb;background:#a63b32;font-family:"Songti SC","STSong",serif;font-size:16px;box-shadow:0 6px 16px rgba(117,49,40,.14)}
.period-back{color:#5b554c;font-size:15px;font-weight:730;text-decoration:none}.period-back:hover{color:var(--ps-green)}
.period-main{max-width:1120px;margin:0 auto;padding:clamp(42px,6vw,78px) clamp(18px,4vw,38px) 20px}
.period-hero{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(280px,.55fr);gap:clamp(34px,6vw,72px);align-items:end}
.period-hero h1{max-width:760px;margin:0;color:#292923;font-family:"Songti SC","STSong","Times New Roman",serif;font-size:clamp(40px,6.4vw,76px);font-weight:650;line-height:.98;letter-spacing:-.04em}
.period-hero p{max-width:720px;margin:24px 0 0;color:#625d54;font-size:clamp(17px,1.8vw,21px);line-height:1.62}
.period-steps{margin:0;padding:0;list-style:none;border-top:1px solid var(--ps-line)}
.period-steps li{display:flex;align-items:center;gap:13px;padding:14px 0;border-bottom:1px solid var(--ps-line);color:#59544c;font-size:14px;line-height:1.4}
.period-steps span{display:grid;width:28px;height:28px;flex:0 0 28px;place-items:center;border-radius:50%;color:#fff;background:var(--ps-green);font-size:12px;font-weight:800}
.period-tool{margin-top:clamp(34px,5vw,58px);padding:clamp(24px,4vw,42px);border:1px solid var(--ps-line);border-radius:18px;background:rgba(255,253,248,.94);box-shadow:0 18px 54px rgba(73,58,35,.08)}
.period-tool-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:25px;padding-bottom:18px;border-bottom:1px solid #ded4c5}
.period-tool-head h2,.period-note h2{margin:0;font-family:"Songti SC","STSong","Times New Roman",serif;font-size:clamp(25px,3vw,34px);line-height:1.1}
.period-tool-head p{margin:0;color:var(--ps-muted);font-size:14px}
.period-fields{display:grid;gap:17px}
.period-form{display:grid;gap:0}.period-form-step{padding:24px 0;border-top:1px solid #ded4c5}.period-form-step-primary{padding-top:0;border-top:0}.period-form-step-head{display:flex;align-items:center;gap:12px;margin-bottom:17px}.period-form-step-head>span{display:grid;width:30px;height:30px;flex:0 0 30px;place-items:center;border-radius:50%;color:#fff;background:var(--ps-green);font-size:13px;font-weight:820}.period-form-step-head h3{margin:0;color:#315d4f;font-size:17px;line-height:1.3}
.period-fields-goal{grid-template-columns:repeat(2,minmax(0,1fr))}.period-fields-primary{grid-template-columns:minmax(240px,1.45fr) minmax(170px,.75fr) minmax(155px,.7fr) minmax(155px,.7fr)}
.period-city-field,.period-method-field,.period-goal-field,.period-relation-field,.period-date-field{grid-column:auto}
.period-field{position:relative;min-width:0}
.period-field label{display:block;margin:0 0 7px;color:#5d574f;font-size:13px;font-weight:780;line-height:1.3}
.period-field input,.period-field select{width:100%;height:50px;padding:0 13px;border:1px solid #cfc5b6;border-radius:8px;color:#2e302c;background:#fff;font:650 16px/1.2 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;outline:none}
.period-field input:focus,.period-field select:focus{border-color:var(--ps-green);box-shadow:0 0 0 3px rgba(47,126,101,.12)}
.period-field-help{min-height:38px;margin:7px 1px 0;color:#6c655b;font-size:12px;line-height:1.45}
.period-cities{position:absolute;z-index:30;top:100%;left:0;right:0;max-height:270px;margin-top:6px;overflow:auto;padding:6px;border:1px solid #ccd5d0;border-radius:10px;background:#fff;box-shadow:0 18px 45px rgba(32,47,41,.16)}
.period-city-search-status{display:flex;min-height:24px;align-items:center;gap:8px;margin:7px 2px -2px;color:#526b61;font-size:13px;font-weight:700;line-height:1.35}.period-city-search-status[hidden]{display:none}.period-city-search-status.is-loading::before{content:"";width:14px;height:14px;flex:0 0 14px;border:2px solid #b9d4c8;border-top-color:var(--ps-green);border-radius:50%;animation:period-city-spin .75s linear infinite}.period-city-search-status.is-empty{color:#776f63}.period-city-search-status.is-error{color:#a0342c}@keyframes period-city-spin{to{transform:rotate(360deg)}}
.period-city-option{display:block;width:100%;padding:10px;border:0;border-radius:7px;color:#243832;background:transparent;text-align:left;cursor:pointer}
.period-city-option:hover,.period-city-option:focus-visible{background:#edf6f1;outline:0}
.period-city-option strong,.period-city-option span{display:block}.period-city-option span{margin-top:3px;color:#738078;font-size:12px}
.period-refinement-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.period-refinement{min-width:0;margin:0!important;padding:0!important;border:1px solid #d9d0c2!important;border-radius:10px;background:#fffdf9}.period-refinement>summary{display:flex;min-height:58px;align-items:center;padding:12px 15px;color:#315d4f!important;font-size:15px;font-weight:780;cursor:pointer;list-style-position:inside}.period-refinement[open]>summary{border-bottom:1px solid #e4dccf;background:#f6f2ea}.period-refinement>p,.period-refinement>.period-fields,.period-refinement>.period-check{margin-left:15px!important;margin-right:15px!important}.period-refinement>p{margin-top:14px!important}
.period-birth{margin-top:22px;padding-top:19px;border-top:1px solid #ded4c5}
.period-birth summary{color:#3e4e47;font-size:15px;font-weight:780;cursor:pointer}.period-birth summary span{margin-left:5px;color:#817a70;font-size:12px;font-weight:600}
.period-birth>p{margin:9px 0 17px;color:var(--ps-muted);font-size:14px;line-height:1.55}
.period-fields-birth{grid-template-columns:minmax(250px,1.45fr) minmax(145px,.75fr);align-items:end}.period-fields-birth>.period-check,.period-fields-birth>.period-birth-city-field{grid-column:1/-1}.period-birth-datetime{min-width:0}
.period-check{display:flex;min-height:50px;align-items:center;gap:9px;color:#555149;font-size:14px;font-weight:650;line-height:1.4}.period-check input{width:20px;height:20px;accent-color:var(--ps-green)}
.period-strict-check{min-height:auto;margin-top:16px;padding:13px 14px;border:1px solid #a8caba;border-radius:9px;color:#285c4b;background:#f1f8f4;align-items:flex-start}.period-strict-check span{display:block;color:#5b6b63;font-size:12px;font-weight:600;line-height:1.45}
.period-structure-filter{margin-top:18px;padding:17px 0 0;border-top:1px solid #ded4c5}.period-structure-filter summary{color:#3e4e47;font-size:15px;font-weight:780;cursor:pointer}.period-structure-filter summary span{margin-left:5px;color:#817a70;font-size:12px;font-weight:600}.period-structure-filter>p{max-width:720px;margin:9px 0 17px;color:var(--ps-muted);font-size:14px;line-height:1.55}.period-fields-structure{grid-template-columns:repeat(2,minmax(0,1fr));align-items:end;margin-bottom:15px!important}.period-structure-preset-field{grid-column:1/-1}.period-structure-preset-status{min-height:20px;margin:7px 1px 0;color:#587064;font-size:13px;line-height:1.45}.period-fields-structure .period-check{min-height:50px;padding-bottom:3px}
.period-actions{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:24px;border-top:1px solid #ded4c5}
.period-status{margin:0;color:#2d715b;font-size:14px;line-height:1.45}.period-status.is-error{color:#a0342c}
.period-submit{min-height:52px;padding:0 23px;border:1px solid var(--ps-green);border-radius:8px;color:#fff;background:var(--ps-green);font:780 16px/1 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;cursor:pointer;box-shadow:0 10px 24px rgba(37,102,80,.16)}
.period-submit:hover{background:var(--ps-green-dark)}.period-submit:disabled{cursor:wait;opacity:.64}
.period-results{margin-top:40px;padding:clamp(24px,4vw,42px);border-top:3px solid var(--ps-green);background:rgba(255,253,248,.76)}
.period-result-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;padding-bottom:18px;border-bottom:1px solid var(--ps-line)}
.period-result-heading h2{margin:0;font-family:"Songti SC","STSong","Times New Roman",serif;font-size:clamp(25px,3vw,34px);line-height:1.12}.period-result-heading p{margin:6px 0 0;color:var(--ps-muted);font-size:14px}.period-result-count{color:var(--ps-green);font-size:14px;font-weight:800;white-space:nowrap}
.period-ranking-note{margin:15px 0 0;padding:11px 13px;border-left:3px solid #b48a48;color:#685e51;background:#fbf6ed;font-size:13px;line-height:1.55}
.period-method-note{margin:18px 0 0;padding:13px 15px;border:1px solid #d9e4dd;border-radius:9px;color:#465f54;background:#f4faf6;font-size:15px;line-height:1.55}.period-method-note strong{display:inline-block;margin-right:4px;color:#285d4d;font-weight:800}
.period-ranking-note+.period-method-note{margin-top:18px}
.period-result-controls{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-top:18px;padding-bottom:14px;border-bottom:1px solid #ded5c8}.period-result-controls p{max-width:650px;margin:0;color:#625d54;font-size:14px;line-height:1.5}.period-result-controls label{display:grid;gap:6px;flex:0 0 min(100%,250px);color:#5f584f;font-size:12px;font-weight:780}.period-result-controls select{width:100%;height:40px;padding:0 10px;border:1px solid #cfc5b6;border-radius:7px;color:#35332e;background:#fff;font:700 14px/1 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}
.period-result-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:34px}
.period-result-item{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;padding:22px 0;border-bottom:1px solid #ded5c8}
.period-result-rank{display:block;margin-bottom:6px;color:var(--ps-red);font-size:12px;font-weight:820;letter-spacing:.06em;text-transform:uppercase}
.period-result-title{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin:0;font-size:19px;line-height:1.3}.period-result-pillars{font:760 19px/1 "Songti SC","STSong",serif}
.period-result-palace{margin:7px 0 0;color:#5b574f;font-size:14px;font-weight:730;line-height:1.45}.period-result-relation{margin:7px 0 0;color:#326653;font-size:14px;line-height:1.5}
.period-result-reasons{margin:9px 0 0;padding-left:19px;color:#686158;font-size:13px;line-height:1.5}.period-result-reasons li+li{margin-top:4px}.period-result-reasons .is-warning{color:#985b38}
.period-result-actions{display:grid;gap:8px;align-self:start}.period-inspect-result,.period-open-map{display:inline-flex;min-height:42px;align-items:center;justify-content:center;padding:0 12px;border:1px solid #b79b69;border-radius:7px;color:#5f4929;background:#fffaf1;font:780 13px/1.25 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;text-align:center;text-decoration:none;white-space:nowrap;cursor:pointer}.period-open-map{border-color:#2f7e65;color:#fff;background:#2f7e65}.period-inspect-result:hover{background:#f7ecd8}.period-inspect-result[aria-pressed="true"]{border-color:#2f7e65;color:#256952;background:#edf7f1}.period-open-map:hover{background:#246550}.period-open-map[aria-busy="true"]{cursor:wait;opacity:.72}
.period-selected-preview{margin:20px 0 0;padding:19px 20px;border:1px solid #a8cabb;border-radius:12px;background:linear-gradient(130deg,#f3faf6,#fffdf7)}.period-selected-preview h3{margin:0;color:#285d4d;font:700 23px/1.2 "Songti SC","STSong","Times New Roman",serif}.period-preview-note{margin:7px 0 0;color:#625d54;font-size:13px;line-height:1.5}.period-preview-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:15px}.period-preview-card{min-width:0;padding:15px;border:1px solid rgba(113,166,145,.6);border-radius:9px;background:rgba(255,255,255,.8);box-shadow:0 7px 18px rgba(47,90,72,.06)}.period-preview-card h4{margin:0;color:#2c6652;font-size:12px;font-weight:820;letter-spacing:.07em;text-transform:uppercase}.period-preview-period{margin:7px 0 0;color:#5e584e;font-size:15px;font-weight:780;line-height:1.45}.period-preview-pillars{margin:4px 0 0;color:#7c5c2f;font:700 18px/1.2 "Songti SC","STSong",serif}.period-preview-facts{display:grid;gap:8px;margin:14px 0 0}.period-preview-facts>div{display:grid;gap:2px;padding-top:8px;border-top:1px solid rgba(172,197,183,.45)}.period-preview-facts dt{color:#2d6653;font-size:11px;font-weight:800}.period-preview-facts dd{margin:0;color:#49463f;font-size:13px;line-height:1.45}.period-preview-copy{margin:13px 0 0;color:#5e584e;font-size:13px;line-height:1.55}.period-preview-reasons{margin:11px 0 0;padding-left:18px;color:#5f594f;font-size:12px;line-height:1.5}.period-preview-reasons .is-warning{color:#965436}.period-preview-open{display:inline-flex;min-height:38px;align-items:center;margin-top:14px;padding:0 11px;border:1px solid #2f7e65;border-radius:7px;color:#fff;background:#2f7e65;font-size:12px;font-weight:780;text-decoration:none}.period-preview-open:hover{background:#246550}
.period-exclusions{margin-top:18px;color:#655f57;font-size:14px;line-height:1.55}.period-exclusions summary{font-weight:760;cursor:pointer}.period-exclusions ul{margin:9px 0 0;padding-left:20px}
.period-empty{margin:22px 0 0;color:#625d54;font-size:16px;line-height:1.6}
.period-classical{margin-top:42px;border:1px solid #b9aa8d;border-radius:16px;background:rgba(255,253,248,.92);box-shadow:0 16px 45px rgba(73,58,35,.07);overflow:hidden}
.period-classical>summary{display:flex;min-height:82px;align-items:center;gap:16px;padding:15px 20px;color:#244f42;background:linear-gradient(120deg,rgba(244,238,224,.72),rgba(255,253,248,.95));cursor:pointer;list-style:none}
.period-classical>summary::-webkit-details-marker{display:none}
.period-classical>summary:focus-visible{outline:3px solid rgba(47,126,101,.25);outline-offset:-3px}
.period-classical-seal{display:grid;width:50px;height:50px;flex:0 0 50px;place-items:center;border:2px double #f2d7a1;border-radius:8px;color:#fff7e9;background:#9c3028;font:700 27px/1 "Songti SC","STSong",serif;box-shadow:0 5px 12px rgba(116,43,36,.15)}
.period-classical-summary-copy{display:grid;min-width:0;gap:4px}.period-classical-summary-copy strong{font:700 clamp(21px,2.6vw,29px)/1.15 "Songti SC","STSong","Times New Roman",serif}.period-classical-summary-copy span{color:#776d61;font-size:13px;line-height:1.4}
.period-classical-chevron{margin-left:auto;font-size:27px;transition:transform .2s ease}.period-classical[open] .period-classical-chevron{transform:rotate(180deg)}
.period-classical-body{padding:clamp(21px,4vw,38px);border-top:1px solid #d8c9b1;background:linear-gradient(90deg,rgba(177,139,76,.03) 1px,transparent 1px),#fffdf9;background-size:32px 100%}
.period-classical-intro{display:grid;grid-template-columns:minmax(150px,.35fr) minmax(0,1.65fr);gap:clamp(22px,5vw,58px);align-items:start;padding-bottom:25px;border-bottom:1px solid #ded4c5}.period-classical-intro>span{color:#265c4c;font:700 clamp(32px,5vw,50px)/1 "Songti SC","STSong",serif;letter-spacing:.08em}.period-classical-intro p{margin:0;color:#5f5a52;font-size:17px;line-height:1.65}
.period-classical-confirmed{display:grid;grid-template-columns:minmax(220px,.7fr) minmax(0,1.3fr);gap:34px;padding:25px 0}.period-classical-confirmed h3{margin:0;color:#2c574a;font:700 23px/1.25 "Songti SC","STSong",serif}.period-classical-confirmed ul{margin:0;padding-left:21px;color:#5c574f;font-size:15px;line-height:1.65}.period-classical-confirmed li+li{margin-top:8px}
.period-classical-sources{display:grid;gap:16px}
.period-classical-source{padding:22px;border:1px solid #d6c7ae;border-radius:12px;background:rgba(255,255,255,.82)}
.period-classical-source>header{display:flex;align-items:flex-start;gap:13px}.period-classical-source-mark{display:grid;width:38px;height:38px;flex:0 0 38px;place-items:center;border-radius:50%;color:#fff;background:#255f4f;font:700 19px/1 "Songti SC","STSong",serif}.period-classical-source h3{margin:0;color:#244f42;font:700 20px/1.3 "Songti SC","STSong",serif}.period-classical-source header p{margin:4px 0 0;color:#796b58;font-size:13px;line-height:1.45}
.period-classical-source blockquote{margin:18px 0;padding:20px;border:1px double #c7ad80;color:#583d20;background:linear-gradient(90deg,rgba(163,127,70,.06) 1px,transparent 1px),#fffaf0;background-size:24px 100%;font:600 clamp(21px,3vw,30px)/1.7 "Songti SC","STSong",serif}
.period-classical-source dl{display:grid;gap:13px;margin:0}.period-classical-source dl>div{display:grid;grid-template-columns:minmax(140px,.35fr) minmax(0,1.65fr);gap:18px}.period-classical-source dt{color:#2d6252;font-weight:800}.period-classical-source dd{margin:0;color:#5d5850;line-height:1.6}.period-classical-source a{display:inline-flex;min-height:44px;align-items:center;margin-top:18px;padding:0 15px;border:1px solid #2f6e5a;border-radius:7px;color:#fff;background:#2f6e5a;font-size:14px;font-weight:780;text-decoration:none}.period-classical-source a:hover{background:#255746}
.period-classical-limit{margin:22px 0 0;padding:16px 18px;border-left:4px solid #b48a48;color:#6d593a;background:#fff8e9;font-size:14px;line-height:1.6}
.period-note{display:grid;grid-template-columns:minmax(240px,.65fr) minmax(0,1.35fr);gap:clamp(35px,7vw,90px);margin-top:50px;padding-top:28px;border-top:1px solid var(--ps-line)}
.period-note p{max-width:720px;margin:0;color:#625d54;font-size:16px;line-height:1.7}
@media(max-width:980px){.period-fields-primary{grid-template-columns:repeat(2,minmax(0,1fr))}.period-city-field,.period-method-field,.period-goal-field,.period-relation-field,.period-date-field{grid-column:auto}.period-fields-birth{grid-template-columns:repeat(2,minmax(0,1fr))}.period-refinement-list{grid-template-columns:1fr}.period-fields-structure{grid-template-columns:repeat(3,minmax(0,1fr))}.period-result-list{grid-template-columns:1fr}}
@media(max-width:700px){.period-header{padding-block:16px}.period-brand span:last-child{display:none}.period-main{padding:24px 12px 20px}.period-hero{grid-template-columns:1fr;gap:22px}.period-hero h1{font-size:clamp(36px,11vw,50px);line-height:1.02}.period-hero p{margin-top:18px;font-size:17px;line-height:1.52}.period-steps li{padding:11px 0}.period-tool{margin:28px 0 0;padding:19px 15px;border-radius:14px}.period-tool-head{align-items:flex-start;flex-direction:column;gap:7px;margin-bottom:18px;padding-bottom:15px}.period-form-step{padding:20px 0}.period-form-step-head{margin-bottom:14px}.period-fields-goal,.period-fields-primary,.period-fields-birth,.period-fields-structure{grid-template-columns:1fr}.period-city-field,.period-method-field,.period-goal-field,.period-relation-field,.period-date-field{grid-column:auto}.period-field-help{min-height:auto;margin-bottom:2px}.period-refinement>summary{min-height:56px}.period-check{min-height:auto;padding:5px 0}.period-actions{align-items:stretch;flex-direction:column-reverse}.period-submit{width:100%}.period-results{margin-top:26px;padding:22px 15px}.period-result-heading,.period-result-controls{align-items:flex-start;flex-direction:column;gap:8px}.period-result-controls label{width:100%}.period-result-item{grid-template-columns:1fr}.period-result-actions,.period-open-map,.period-inspect-result{width:100%}.period-preview-grid{grid-template-columns:1fr}.period-selected-preview{padding:17px}.period-classical{margin-inline:0}.period-classical>summary{min-height:74px;padding:12px 14px}.period-classical-seal{width:44px;height:44px;flex-basis:44px}.period-classical-intro,.period-classical-confirmed{grid-template-columns:1fr;gap:14px}.period-classical-source{padding:17px}.period-classical-source dl>div{grid-template-columns:1fr;gap:4px}.period-classical-source a{width:100%;justify-content:center;text-align:center}.period-note{grid-template-columns:1fr;gap:15px;margin-top:34px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}