:root{--ff-bg:#f3f8f6;--ff-panel:#ffffff;--ff-panel2:#f7fbfa;--ff-line:#d7e6e2;--ff-text:#123b3b;--ff-muted:#6b817d;--ff-cyan:#22d3ee;--ff-teal:#2dd4bf;--ff-green:#34d399;--ff-amber:#fbbf24;--ff-shadow:0 10px 30px rgba(31,79,72,.06)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(180deg,#f6faf8 0%,#eef6f3 100%);color:var(--ff-text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:inherit}
.fft-header{border-bottom:1px solid rgba(148,163,184,.14);background:rgba(255,255,255,.96);backdrop-filter:blur(14px);position:sticky;top:0;z-index:20}.fft-header-inner{width:min(1180px,calc(100% - 32px));margin:auto;min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:20px}.fft-brand{text-decoration:none;display:flex;align-items:center;gap:10px;font-weight:950;letter-spacing:.02em}.fft-brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--ff-teal),#0284c7);box-shadow:0 8px 24px rgba(45,212,191,.18)}.fft-brand em{font-style:normal;color:var(--ff-teal)}.fft-nav{display:flex;gap:18px;font-size:13px;font-weight:800}.fft-nav a{text-decoration:none;color:#244b47}.fft-nav a:hover{color:#ffffff}
.fft-shell{width:min(1080px,calc(100% - 28px));margin:0 auto;padding:34px 0 58px}.fft-crumb{font-size:12px;color:#6b817d;margin-bottom:22px}.fft-crumb a{color:#08756b;text-decoration:none}.fft-hero{padding:30px;border:1px solid var(--ff-line);border-radius:22px;background:radial-gradient(circle at 85% 0%,rgba(11,143,130,.07),transparent 32%),linear-gradient(135deg,#ffffff,#f7fbfa);box-shadow:var(--ff-shadow)}.fft-kicker{display:inline-flex;align-items:center;gap:8px;color:#0b8f82;font-size:11px;font-weight:950;letter-spacing:.09em;text-transform:uppercase}.fft-kicker:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--ff-teal);box-shadow:0 0 0 5px rgba(45,212,191,.1)}.fft-hero h1{font-size:clamp(30px,4.6vw,50px);line-height:1.05;margin:12px 0}.fft-hero p{max-width:760px;margin:0;color:#6b817d;font-size:16px;line-height:1.65}.fft-badges{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.fft-badge{padding:7px 10px;border:1px solid rgba(148,163,184,.16);border-radius:999px;background:#eef7f4;color:#244b47;font-size:11px;font-weight:850}
.fft-tool{margin-top:22px;padding:26px;border:1px solid var(--ff-line);border-radius:20px;background:var(--ff-panel);box-shadow:var(--ff-shadow)}.fft-tool h2,.fft-info h2{margin:0 0 16px;font-size:22px}.fft-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.fft-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.fft-field{display:flex;flex-direction:column;gap:7px}.fft-field label{color:#244b47;font-size:12px;font-weight:850}.fft-field small{color:#6b817d;font-size:10.5px;line-height:1.4}.fft-input,.fft-select{width:100%;min-height:48px;border:1px solid #cfe0dc;border-radius:12px;background:#ffffff;color:#123b3b;padding:0 13px;font:inherit;font-size:15px;outline:none}.fft-input:focus,.fft-select:focus{border-color:#7fc7bd;box-shadow:0 0 0 3px rgba(11,143,130,.08)}
.fft-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.fft-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;border:0;border-radius:12px;background:linear-gradient(135deg,#14b8a6,#0284c7);color:#ffffff;font:inherit;font-size:13px;font-weight:950;cursor:pointer;text-decoration:none}.fft-btn:hover{filter:brightness(1.08)}.fft-btn:disabled{opacity:.55;cursor:not-allowed}.fft-btn-secondary{background:#ffffff;border:1px solid #cfe0dc;color:#24524e}
.fft-result{display:none;margin-top:18px;border:1px solid rgba(45,212,191,.28);border-radius:15px;background:rgba(20,184,166,.07);padding:17px}.fft-result.is-visible{display:block}.fft-result strong{display:block;font-size:13px;color:#08756b;margin-bottom:5px}.fft-result-value{font-size:clamp(26px,4vw,38px);font-weight:950;letter-spacing:-.03em}.fft-result p{margin:7px 0 0;color:#6b817d;line-height:1.5;font-size:12.5px}.fft-note{margin-top:14px;padding:13px 14px;border:1px solid rgba(251,191,36,.22);border-radius:12px;background:rgba(251,191,36,.06);color:#8a6a13;font-size:12px;line-height:1.55}
.fft-status{display:none;margin-top:15px}.fft-status.is-visible{display:block}.fft-status-row{display:flex;justify-content:space-between;gap:12px;font-size:12px;color:#55736e}.fft-progress{height:8px;margin-top:8px;background:#e4efec;border-radius:99px;overflow:hidden}.fft-progress>span{display:block;height:100%;width:0;background:linear-gradient(90deg,#14b8a6,#22d3ee);transition:width .2s ease}
.fft-drop{display:grid;place-items:center;text-align:center;min-height:190px;border:1.5px dashed #b8d8d2;border-radius:16px;background:#f7fbfa;padding:24px;cursor:pointer}.fft-drop.is-drag{border-color:#7fc7bd;background:#edf7f4}.fft-drop strong{font-size:17px}.fft-drop span{color:#6b817d;font-size:12px;margin-top:5px}.fft-drop input{display:none}.fft-file{display:none;margin-top:12px;padding:12px 14px;border:1px solid #d7e6e2;border-radius:12px;background:#ffffff}.fft-file.is-visible{display:flex;align-items:center;justify-content:space-between;gap:10px}.fft-file-meta{min-width:0}.fft-file-meta strong{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:12px}.fft-file-meta span{display:block;color:#6b817d;font-size:10.5px;margin-top:3px}
.fft-quality{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin-top:16px}.fft-choice{position:relative;border:1px solid #d7e6e2;border-radius:13px;padding:13px;background:#ffffff;cursor:pointer}.fft-choice:has(input:checked){border-color:#7fc7bd;background:#e8f7f3}.fft-choice input{position:absolute;opacity:0}.fft-choice strong{display:block;font-size:12px}.fft-choice span{display:block;color:#6b817d;font-size:10.5px;line-height:1.45;margin-top:4px}
.fft-pages{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px;margin-top:16px}.fft-page{border:1px solid #d7e6e2;border-radius:13px;background:#ffffff;padding:10px;cursor:grab}.fft-page.is-dragging{opacity:.45}.fft-page img{width:100%;aspect-ratio:3/4;object-fit:contain;background:white;border-radius:8px}.fft-page-title{display:flex;align-items:center;justify-content:space-between;gap:6px;margin-top:8px}.fft-page-title strong{font-size:11px}.fft-mini-actions{display:flex;gap:4px}.fft-mini{width:28px;height:28px;border:1px solid #cfe0dc;border-radius:8px;background:#ffffff;color:#24524e;cursor:pointer}
.fft-calc-card{padding:18px;border:1px solid #d7e6e2;border-radius:15px;background:#ffffff}.fft-calc-card h3{margin:0 0 13px;font-size:16px}.fft-calc-card .fft-result{margin-top:12px}.fft-formula{margin:12px 0;padding:12px;border-radius:10px;background:#e4efec;color:#08756b;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;overflow:auto}.fft-factors{display:flex;flex-direction:column;gap:8px}.fft-factor{display:grid;grid-template-columns:1fr 1fr 150px 42px;gap:8px;align-items:end}.fft-factor .fft-btn-secondary{min-height:48px;padding:0}.fft-info{margin-top:22px;padding:24px;border:1px solid var(--ff-line);border-radius:18px;background:#ffffff}.fft-info p,.fft-info li{color:#6b817d;line-height:1.65;font-size:13px}.fft-info code{color:#08756b}.fft-info a{color:#0b8f82}
.fft-new-tools{width:min(1180px,calc(100% - 32px));margin:26px auto}.fft-new-tools h2{font-size:20px;margin:0 0 13px}.fft-new-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.fft-new-card{display:block;padding:15px;border:1px solid #24364e;border-radius:13px;background:#ffffff;text-decoration:none}.fft-new-card strong{font-size:12px}.fft-new-card span{display:block;color:#6b817d;font-size:10.5px;line-height:1.45;margin-top:5px}
@media(max-width:860px){.fft-grid,.fft-grid-3,.fft-quality{grid-template-columns:1fr}.fft-factor{grid-template-columns:1fr 1fr}.fft-factor>select{grid-column:1/2}.fft-factor>button{grid-column:2/3}.fft-new-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.fft-header-inner{width:min(100% - 20px,1180px);min-height:62px}.fft-nav{gap:10px;font-size:11px}.fft-brand span:last-child{display:none}.fft-shell{width:min(100% - 18px,1080px);padding-top:18px}.fft-hero,.fft-tool,.fft-info{padding:18px;border-radius:16px}.fft-hero h1{font-size:32px}.fft-new-grid{grid-template-columns:1fr}.fft-new-tools{width:min(100% - 18px,1180px)}}