:root{--navy:#0F2A4A;--ink:#0F172A;--muted:#526075;--line:#E3E8EF;--bg:#FFFFFF;--soft:#F5F7FB;--blue:#2563EB;--blue-d:#1D4ED8;--blue-l:#EAF1FF;--green:#16A34A;--green-l:#E8F6EE;--amber:#B45309;--amber-l:#FEF3C7;
--r:16px;--sh:0 1px 2px rgba(15,23,42,.05),0 12px 32px -14px rgba(15,23,42,.22);--sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.6 var(--sans);overflow-x:hidden}
a{color:var(--blue)}h1,h2,h3,p{margin:0}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}.narrow{max-width:760px}
section{padding:64px 0}
.demo-bar{background:var(--amber-l);color:var(--amber);font-size:13px;font-weight:600;text-align:center;padding:6px 12px}
.top{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.top-in{display:flex;align-items:center;gap:16px;height:60px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--navy);text-decoration:none;letter-spacing:-.01em}
.logo-mark svg{width:30px;height:30px;display:block}.logo-mark rect{fill:var(--blue)}.logo-mark path{fill:#fff}
.nav{display:none;gap:24px;margin-left:auto}.nav a{color:var(--muted);text-decoration:none;font-weight:500;font-size:15px}.nav a:hover{color:var(--ink)}
.top .btn-sm{margin-left:auto}
@media(min-width:860px){.nav{display:flex}.top .btn-sm{margin-left:8px}}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 22px;border-radius:12px;font:600 16px/1.2 var(--sans);text-decoration:none;border:1px solid transparent;cursor:pointer;transition:background .15s,transform .15s,box-shadow .15s}
.btn:focus-visible,button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #93B4FF;outline-offset:2px}
.btn-pri{background:var(--blue);color:#fff;box-shadow:0 8px 20px -10px rgba(37,99,235,.8)}.btn-pri:hover{background:var(--blue-d);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--navy);border-color:var(--line)}.btn-ghost:hover{border-color:#C9D3E1}
.btn-sm{min-height:40px;padding:8px 14px;font-size:14px;border-radius:10px}.btn-lg{min-height:56px;padding:16px 30px;font-size:17px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--green);background:var(--green-l);padding:5px 12px;border-radius:999px;margin-bottom:18px}
.eyebrow.alt{color:var(--blue);background:var(--blue-l);margin-bottom:12px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 0 rgba(22,163,74,.6);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 8px rgba(22,163,74,0)}100%{box-shadow:0 0 0 0 rgba(22,163,74,0)}}
/* hero */
.hero{padding:40px 0 48px;background:radial-gradient(1200px 400px at 80% -10%,#EEF4FF 0,transparent 60%),linear-gradient(#fff,#F8FAFD)}
.hero-grid{display:grid;gap:36px;grid-template-columns:minmax(0,1fr)}.hero-grid>*{min-width:0}
h1{font-size:clamp(34px,8.5vw,56px);line-height:1.05;letter-spacing:-.03em;font-weight:800;color:var(--navy)}
.hl{color:var(--blue)}
.lead{font-size:18px;color:var(--muted);margin:18px 0 20px;max-width:34em}
.checks{list-style:none;padding:0;margin:0 0 26px;display:grid;gap:10px}
.checks li{position:relative;padding-left:30px;font-weight:500}
.checks li::before{content:"";position:absolute;left:0;top:3px;width:20px;height:20px;border-radius:50%;background:var(--green-l) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5.5 10.5l3 3 6-7' fill='none' stroke='%2316A34A' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/20px no-repeat}
.cta-row{display:flex;flex-wrap:wrap;gap:12px}.cta-row.center{justify-content:center}
.cta-row .btn{flex:1 1 200px}@media(min-width:600px){.cta-row .btn{flex:0 0 auto}}
.micro{font-size:13px;color:var(--muted);margin-top:14px}
@media(min-width:960px){.hero{padding:64px 0 72px}.hero-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);align-items:center;gap:56px}}
/* chat */
.chat{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--sh);display:flex;flex-direction:column;height:560px;max-height:78vh;min-height:460px;overflow:hidden}
.chat-head{display:flex;align-items:center;gap:12px;padding:14px 16px;background:var(--navy);color:#fff;font-size:15px}
.chat-head small{display:flex;align-items:center;gap:6px;font-size:12px;color:#B8C6DA;font-weight:400}
.chat-head strong{font-weight:700}
.avatar{width:38px;height:38px;border-radius:12px;background:var(--blue);display:grid;place-items:center;flex:0 0 38px}.avatar svg{width:20px;height:20px;fill:#fff}
.online{width:7px;height:7px;border-radius:50%;background:#4ADE80}
.chat-reset{margin-left:auto;background:rgba(255,255,255,.1);color:#fff;border:0;border-radius:10px;width:36px;height:36px;font-size:18px;cursor:pointer}.chat-reset:hover{background:rgba(255,255,255,.2)}
.chat-log{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px;background:#F7F9FC;overscroll-behavior:contain}
.msg{max-width:86%;padding:10px 14px;border-radius:16px;font-size:15px;line-height:1.5;animation:in .25s ease both;white-space:pre-line;overflow-wrap:anywhere}
.msg.bot{background:#fff;border:1px solid var(--line);border-bottom-left-radius:6px;align-self:flex-start}
.msg.me{background:var(--blue);color:#fff;border-bottom-right-radius:6px;align-self:flex-end}
.msg b{font-weight:700}.msg .tag{display:inline-block;font-size:11px;font-weight:700;color:var(--amber);background:var(--amber-l);padding:2px 8px;border-radius:999px;margin-bottom:4px}
.msg.ok{border-color:#BBE5CB;background:#F3FBF6}
.msg a{color:var(--blue);font-weight:600}
@keyframes in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.typing{display:inline-flex;gap:4px;padding:14px 16px}.typing i{width:7px;height:7px;border-radius:50%;background:#9AA8BC;animation:b 1s infinite}.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes b{0%,60%,100%{transform:none;opacity:.5}30%{transform:translateY(-4px);opacity:1}}
.chips{display:flex;gap:8px;padding:10px 12px 4px;overflow-x:auto;background:#fff;border-top:1px solid var(--line);scrollbar-width:none}.chips::-webkit-scrollbar{display:none}
.chips:empty{display:none}
.chip{flex:0 0 auto;border:1px solid #C9D7F5;background:var(--blue-l);color:var(--blue-d);border-radius:999px;padding:8px 14px;font:600 14px/1.2 var(--sans);cursor:pointer;white-space:nowrap}.chip:hover{background:#DCE8FF}
.chat-input{display:flex;gap:8px;padding:10px 12px 12px;background:#fff}
.chips:empty+.chat-input{border-top:1px solid var(--line)}
.chat-input input{flex:1;min-width:0;border:1px solid var(--line);border-radius:12px;padding:12px 14px;font:16px var(--sans);background:#fff;color:var(--ink)}
.chat-input input:focus{border-color:var(--blue);outline:none;box-shadow:0 0 0 3px #DCE8FF}
.chat-input button{width:48px;border:0;border-radius:12px;background:var(--blue);cursor:pointer;display:grid;place-items:center}.chat-input button svg{width:20px;height:20px;fill:#fff}
.demo-note{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
/* sections */
.sec-head{text-align:center;max-width:680px;margin:0 auto 36px}
h2{font-size:clamp(26px,5.5vw,38px);line-height:1.15;letter-spacing:-.02em;font-weight:800;color:var(--navy)}
.sub{color:var(--muted);margin-top:12px;font-size:17px}
.fine{font-size:12.5px;color:var(--muted);margin-top:10px;text-align:center}
.alt-bg{background:var(--soft)}
/* sheet */
.sheet-sec{background:var(--soft);padding-top:56px}
.sheet{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh);overflow:hidden;max-width:960px;margin:0 auto}
.sheet-bar{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--line)}
.sheet-icon{width:22px;height:22px;border-radius:5px;background:linear-gradient(#fff,#fff) 5px 7px/12px 2px no-repeat,linear-gradient(#fff,#fff) 5px 11px/12px 2px no-repeat,linear-gradient(#fff,#fff) 5px 15px/12px 2px no-repeat,#1E8E5A}
.sheet-title{font-weight:600}
.sheet-status{margin-left:auto;font-size:12.5px;color:var(--green);font-weight:600;transition:color .2s}
.sheet-status.busy{color:var(--amber)}
.sheet-scroll{overflow-x:auto}
table{border-collapse:collapse;width:100%;min-width:720px;font-size:13.5px}
th,td{border-right:1px solid #ECEFF4;border-bottom:1px solid #ECEFF4;padding:9px 12px;text-align:left;white-space:nowrap}
th{background:#F3F5F8;color:#5B6678;font-weight:600;font-size:12px}
td.rn,th.rn{background:#F3F5F8;color:#8A94A6;text-align:center;width:40px;font-size:12px}
tr.sample td:not(.rn){color:#7A8599}
tr.new td{animation:flash 2.4s ease}
@keyframes flash{0%,40%{background:#DFF5E7}100%{background:transparent}}
.src{display:inline-block;font-size:11.5px;font-weight:600;padding:2px 8px;border-radius:999px;background:var(--blue-l);color:var(--blue-d)}
.sheet-foot{display:flex;justify-content:space-between;align-items:center;padding:8px 16px;background:#F8F9FB;font-size:12.5px;color:#5B6678}
.sheet-foot span{background:#fff;border:1px solid var(--line);border-bottom:2px solid #1E8E5A;padding:3px 12px;border-radius:4px;font-weight:600}
.linkbtn{background:none;border:0;color:var(--muted);font:12.5px var(--sans);text-decoration:underline;cursor:pointer}
/* steps & cards */
.steps{list-style:none;padding:0;margin:0;display:grid;gap:16px}
.steps li,.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px}
.steps span{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--blue-l);color:var(--blue-d);font-weight:800;margin-bottom:12px}
h3{font-size:18px;color:var(--navy);margin-bottom:6px;letter-spacing:-.01em}
.steps p,.card p{color:var(--muted);font-size:15px}
.cards3{display:grid;gap:16px}.ic{font-size:26px;margin-bottom:8px}
.good-for{text-align:center;color:var(--muted);margin-top:28px;font-size:15px}
@media(min-width:720px){.steps{grid-template-columns:repeat(2,1fr)}.cards3{grid-template-columns:repeat(3,1fr)}}
@media(min-width:1000px){.steps{grid-template-columns:repeat(4,1fr)}}
/* pricing */
.draft-tag{display:inline-block;margin-top:14px;font-size:13.5px;font-weight:700;color:var(--amber);background:var(--amber-l);border:1px dashed #E7B65A;padding:6px 14px;border-radius:999px}
.plans{display:grid;gap:18px;max-width:880px;margin:0 auto}
@media(min-width:760px){.plans{grid-template-columns:1fr 1fr}}
.plan{position:relative;background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px 24px;display:flex;flex-direction:column}
.plan.featured{border:2px solid var(--blue);box-shadow:var(--sh)}
.plan .badge{position:absolute;top:-12px;left:24px;background:var(--blue);color:#fff;font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px}
.plan .draft{position:absolute;top:14px;right:16px;font-size:11px;font-weight:700;color:var(--amber);background:var(--amber-l);padding:3px 8px;border-radius:999px}
.plan h3{font-size:20px;padding-right:56px}
.plan .blurb{color:var(--muted);font-size:15px;margin:4px 0 18px}
.price{display:flex;align-items:baseline;gap:6px;flex-wrap:wrap}
.price .big{font-size:42px;font-weight:800;letter-spacing:-.03em;color:var(--navy);line-height:1}
.price .per{color:var(--muted);font-weight:500}
.setup{font-size:14.5px;color:var(--muted);margin:6px 0 18px}.setup b{color:var(--ink)}
.plan ul{list-style:none;padding:0;margin:0 0 22px;display:grid;gap:9px;font-size:15px}
.plan li{padding-left:26px;position:relative}.plan li::before{content:"✓";position:absolute;left:2px;color:var(--green);font-weight:800}
.plan .btn{margin-top:auto;width:100%}
/* faq */
details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 18px;margin-bottom:10px}
summary{cursor:pointer;font-weight:600;padding:16px 28px 16px 0;list-style:none;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:0;top:12px;font-size:22px;color:var(--blue);font-weight:500}
details[open] summary::after{content:"–"}
details p{color:var(--muted);padding:0 0 16px;font-size:15.5px}
/* final */
.final{background:var(--navy);color:#fff;text-align:center}
.final h2{color:#fff}.final-in>p{color:#C3D0E3;margin:12px auto 26px;max-width:34em;font-size:17px}
.contact-line{margin-top:20px;font-size:15px;color:#C3D0E3}.contact-line a{color:#fff;font-weight:600}
.foot{padding:28px 0 96px;border-top:1px solid var(--line);font-size:14px;color:var(--muted);text-align:center}
@media(min-width:860px){.foot{padding-bottom:28px}}
.fab{position:fixed;left:16px;right:16px;bottom:calc(14px + env(safe-area-inset-bottom));z-index:30;min-height:52px;border:0;border-radius:14px;background:var(--blue);color:#fff;font:700 16px var(--sans);box-shadow:0 12px 28px -10px rgba(15,42,74,.6);cursor:pointer;transform:translateY(140%);transition:transform .25s}
.fab.show{transform:none}
@media(min-width:860px){.fab{display:none}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}