*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
:root{--navy:#1A3A5C;--navy2:#142E4A;--blue:#185FA5;--amber:#EF9F27;--amber-d:#B87A10;--amber-l:#FEF3DC;--light:#E6F1FB;--white:#FFFFFF;--bg:#F5F7FA;--border:#DDE4EE;--mid:#4A6080;--muted:#8A9BB0;--chip-bg:#F0F4F9;--sel-bg:#E6F1FB;--sel-bdr:#185FA5;--sel-txt:#0C447C;}
body{font-family:'DM Sans',sans-serif;background:var(--bg);color:var(--navy);min-height:100vh;}
header{background:var(--navy);min-height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 1.4rem;position:sticky;top:0;z-index:20;gap:10px;flex-wrap:wrap;padding-top:6px;padding-bottom:6px;}
.logo{display:flex;align-items:center;gap:10px;}
.logo-icon{width:32px;height:32px;min-width:32px;background:var(--amber);border-radius:7px;display:flex;align-items:center;justify-content:center;}
.logo-icon svg{width:18px;height:18px;}
.logo-name{font-family:'DM Serif Display',serif;color:var(--amber);font-size:17px;line-height:1.1;}
.logo-tag{font-size:10px;color:rgba(255,255,255,0.35);letter-spacing:.03em;}
.lang-bar{display:flex;align-items:center;gap:4px;flex-shrink:0;}
.lang-btn{padding:4px 9px;border-radius:14px;border:1px solid rgba(255,255,255,0.15);font-family:'DM Sans',sans-serif;font-size:12px;font-weight:500;color:rgba(255,255,255,0.45);background:transparent;cursor:pointer;transition:all .14s;line-height:1;}
.lang-btn.active{background:var(--amber);color:var(--navy);border-color:var(--amber);}
.lang-btn:not(.active):hover{color:#fff;border-color:rgba(255,255,255,0.35);}
.mode-bar{background:var(--white);border-bottom:1px solid var(--border);min-height:50px;display:flex;align-items:center;justify-content:center;gap:4px;padding:8px 1rem;flex-wrap:wrap;}
.mode-btn{display:flex;align-items:center;gap:6px;padding:7px 16px;border-radius:20px;border:1.5px solid transparent;font-family:'DM Sans',sans-serif;font-size:13px;font-weight:500;cursor:pointer;color:var(--muted);background:transparent;transition:all .15s;white-space:nowrap;-webkit-tap-highlight-color:transparent;}
.mode-btn svg{width:14px;height:14px;flex-shrink:0;}
.mode-btn.active{background:var(--navy);color:var(--amber);border-color:var(--navy2);}
.mode-btn:not(.active):hover{background:var(--bg);color:var(--navy);}
.mode-sep{width:1px;height:18px;background:var(--border);margin:0 2px;}
main{max-width:920px;margin:0 auto;padding:1.6rem 1.2rem 5rem;}
.page-intro{text-align:center;margin-bottom:1.6rem;}
.page-intro h2{font-family:'DM Serif Display',serif;font-size:clamp(1.25rem,4vw,1.65rem);color:var(--navy);margin-bottom:5px;}
.page-intro p{font-size:14px;color:var(--muted);}
.mode-panel{display:none;}
.mode-panel.visible{display:block;}
.step-lbl{font-size:10px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:10px;display:flex;align-items:center;gap:8px;}
.step-lbl::after{content:'';flex:1;height:1px;background:var(--border);}
.scenarios{display:grid;gap:10px;margin-bottom:1.4rem;}
.scenarios.c3{grid-template-columns:repeat(3,1fr);}
.scenarios.c6{grid-template-columns:repeat(3,1fr);}
@media(max-width:600px){.scenarios.c6{grid-template-columns:1fr 1fr;}}
@media(max-width:400px){.scenarios.c3{grid-template-columns:1fr 1fr;}.scenarios.c6{grid-template-columns:1fr 1fr;}}
.scen{border:1.5px solid var(--border);border-radius:12px;padding:.75rem .85rem;cursor:pointer;background:var(--white);transition:all .14s;-webkit-tap-highlight-color:transparent;}
.scen:active{transform:scale(.97);}
.scen.sel{border-color:var(--amber);background:var(--amber-l);}
.scen-icon{width:26px;height:26px;border-radius:6px;background:var(--light);display:flex;align-items:center;justify-content:center;margin-bottom:6px;}
.scen-icon svg{width:13px;height:13px;color:var(--blue);}
.scen.sel .scen-icon{background:rgba(239,159,39,.2);}
.scen.sel .scen-icon svg{color:var(--amber-d);}
.scen-title{font-size:clamp(11px,2.5vw,13px);font-weight:600;color:var(--navy);line-height:1.3;}
.scen-desc{font-size:11px;color:var(--muted);margin-top:2px;line-height:1.3;}
.scen.sel .scen-title{color:var(--navy2);}
.formula-hint{background:var(--white);border:1px solid var(--border);border-left:3px solid var(--amber);border-radius:0 10px 10px 0;padding:.7rem 1rem;margin-bottom:1.4rem;font-size:13px;color:var(--mid);display:flex;align-items:flex-start;gap:8px;flex-wrap:wrap;}
.ftag{display:inline-block;background:var(--amber-l);color:var(--amber-d);border:1px solid var(--amber);border-radius:5px;padding:1px 8px;font-size:12px;font-weight:600;white-space:nowrap;}
.builder{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:1.3rem;}
@media(max-width:540px){.builder{grid-template-columns:1fr;}}
.block{background:var(--white);border:1px solid var(--border);border-radius:14px;padding:.9rem 1rem;}
.block-hd{margin-bottom:10px;}
.block-hd-row{display:flex;align-items:center;gap:8px;margin-bottom:3px;}
.num{width:22px;height:22px;min-width:22px;background:var(--amber);color:var(--navy);border-radius:50%;font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.block-title{font-size:13px;font-weight:600;color:var(--navy);}
.block-hint{font-size:11px;color:var(--muted);opacity:.75;line-height:1.3;padding-left:30px;font-style:italic;min-height:14px;}
.chips{display:flex;flex-direction:column;gap:5px;}
.chip{padding:8px 11px;border:1px solid var(--border);border-radius:8px;font-size:clamp(12px,3vw,13px);color:var(--navy);cursor:pointer;text-align:left;background:var(--chip-bg);line-height:1.4;transition:all .13s;font-family:'DM Sans',sans-serif;width:100%;min-height:44px;-webkit-tap-highlight-color:transparent;}
.chip:active{transform:scale(.98);}
.chip:hover{background:var(--amber-l);border-color:var(--amber);}
.chip.selected{background:var(--sel-bg);border-color:var(--sel-bdr);color:var(--sel-txt);font-weight:500;}
.preview-wrap{background:var(--white);border:1.5px solid var(--border);border-radius:16px;overflow:hidden;margin-bottom:10px;}
.preview-bar{background:var(--navy2);padding:10px 16px;display:flex;align-items:center;justify-content:space-between;}
.preview-bar-title{color:var(--amber);font-size:12px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;}
.dots{display:flex;gap:5px;}
.dot{width:10px;height:10px;border-radius:50%;}
.preview-body{padding:1.2rem 1.4rem;min-height:120px;}
.prev-objet{font-size:12px;color:var(--muted);margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid var(--border);display:none;}
.prev-objet strong{color:var(--navy);font-weight:600;}
.prev-text{font-size:clamp(13px,3vw,14px);line-height:1.95;color:var(--navy);white-space:pre-wrap;}
.prev-empty{font-size:13px;color:var(--muted);font-style:italic;}
.btn-reset{display:block;width:100%;padding:11px;background:transparent;border:1px solid var(--border);border-radius:8px;font-family:'DM Sans',sans-serif;font-size:13px;color:var(--muted);cursor:pointer;transition:all .14s;min-height:44px;}
.btn-reset:hover{background:var(--bg);color:var(--navy);}
footer{text-align:center;padding:2rem 1rem;font-size:12px;color:var(--muted);border-top:1px solid var(--border);margin-top:2rem;}
footer .np{color:var(--blue);font-weight:500;}
footer a{color:var(--blue);text-decoration:none;}