*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{background:#f5f6f8;color:#1f2828;font-family:'Sora',sans-serif;font-size:14px;line-height:1.6;min-height:100vh;display:flex;flex-direction:column;}
a{color:inherit;}
.st_wrap{width:100%;max-width:1140px;margin:0 auto;padding:0 18px;}
.st_main{flex:1;}

.st_topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,0.92);backdrop-filter:blur(8px);border-bottom:1px solid #e8eaee;}
.st_topbar_inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:66px;}
.st_logo{display:flex;align-items:center;gap:9px;text-decoration:none;}
.st_logo_mark{width:36px;height:36px;background:linear-gradient(135deg,#18C99F 0%,#1f55c8 100%);border-radius:9px;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.st_logo_mark svg{width:18px;height:18px;}
.st_logo_name{font-family:'JetBrains Mono',monospace;font-size:18px;font-weight:500;color:#1f2828;letter-spacing:0.03em;}
.st_logo_name span{color:#18C99F;}
.st_nav{display:flex;align-items:center;gap:26px;}
.st_nav a{font-size:13px;font-weight:500;color:#5a6378;text-decoration:none;}
.st_nav a:hover{color:#18C99F;}
.st_top_actions{display:flex;align-items:center;gap:9px;}

.st_btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;font-family:'Sora',sans-serif;font-size:13px;font-weight:600;letter-spacing:0.02em;padding:10px 18px;border-radius:9px;text-decoration:none;cursor:pointer;border:1.5px solid transparent;transition:background 0.18s,border-color 0.18s,box-shadow 0.18s,color 0.18s;}
.st_btn_primary{background:#18C99F;color:#fff;}
.st_btn_primary:hover{background:#18AA88;box-shadow:0 8px 18px rgba(24,201,159,0.28);}
.st_btn_ghost{background:#fff;color:#1f2828;border-color:#e5e8f0;}
.st_btn_ghost:hover{border-color:#18C99F;color:#18AA88;}
.st_btn_lg{font-size:14px;padding:14px 24px;}

.st_hero{padding:70px 0 60px;}
.st_hero_grid{display:flex;align-items:center;gap:48px;}
.st_hero_text{flex:1.1;}
.st_badge{display:inline-flex;align-items:center;gap:6px;background:#eef5ff;border-radius:18px;padding:5px 12px;margin-bottom:18px;}
.st_badge_dot{width:7px;height:7px;border-radius:50%;background:#18C99F;animation:st_pulse 2s infinite;}
.st_badge_text{font-size:11px;color:#2F8C88;font-weight:500;letter-spacing:0.03em;}
.st_hero_title{font-size:42px;line-height:1.18;font-weight:700;color:#0f1628;letter-spacing:-0.01em;margin-bottom:18px;}
.st_hero_title span{background:linear-gradient(135deg,#18C99F 0%,#1f55c8 100%);-webkit-background-clip:text;background-clip:text;color:transparent;}
.st_hero_sub{font-size:16px;color:#5a6378;max-width:520px;margin-bottom:28px;}
.st_hero_actions{display:flex;flex-wrap:wrap;gap:11px;}
.st_hero_note{font-size:12px;color:#8b93a8;margin-top:14px;}

.st_mock{flex:0.9;background:#fff;border:1px solid #e8eaee;border-radius:18px;box-shadow:0 18px 48px rgba(15,22,40,0.10);overflow:hidden;max-width:420px;width:100%;}
.st_mock_head{display:flex;align-items:center;gap:10px;padding:14px 18px;background:linear-gradient(135deg,#18C99F 0%,#1f55c8 100%);color:#fff;}
.st_mock_avatar{width:32px;height:32px;border-radius:50%;background:rgba(255,255,255,0.22);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;}
.st_mock_title{font-size:13px;font-weight:600;line-height:1.3;}
.st_mock_status{font-size:11px;opacity:0.85;}
.st_mock_body{padding:18px;display:flex;flex-direction:column;gap:10px;background:#f8f9fc;}
.st_mock_msg{max-width:82%;padding:9px 13px;border-radius:8px;font-size:12px;line-height:1.5;}
.st_mock_label{display:block;font-size:10px;font-weight:600;letter-spacing:0.05em;text-transform:uppercase;opacity:0.7;margin-bottom:2px;}
.st_mock_user{align-self:flex-end;background:#1f55c8;color:#fff;}
.st_mock_ai{align-self:flex-start;background:#fff;border:1px solid #e5e8f0;color:#1f2828;}
.st_mock_agent{align-self:flex-start;background:#e6faf4;border:1px solid #bfeedd;color:#135e4c;}
.st_mock_system{align-self:center;font-size:11px;color:#8b93a8;}
.st_mock_input{display:flex;align-items:center;gap:8px;padding:12px 14px;border-top:1px solid #eef0f5;}
.st_mock_input_box{flex:1;height:34px;border-radius:8px;background:#f8f9fc;border:1.5px solid #e5e8f0;font-size:12px;color:#c0c7d8;display:flex;align-items:center;padding:0 12px;}
.st_mock_send{width:34px;height:34px;border-radius:8px;background:#18C99F;display:flex;align-items:center;justify-content:center;}
.st_mock_send svg{width:15px;height:15px;}

.st_section{padding:64px 0;}
.st_section_alt{background:#fff;border-top:1px solid #e8eaee;border-bottom:1px solid #e8eaee;}
.st_section_head{text-align:center;max-width:620px;margin:0 auto 40px;}
.st_eyebrow{font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:500;color:#18C99F;letter-spacing:0.12em;text-transform:uppercase;margin-bottom:8px;}
.st_section_title{font-size:30px;line-height:1.25;font-weight:700;color:#0f1628;margin-bottom:10px;}
.st_section_sub{font-size:15px;color:#5a6378;}

.st_features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.st_feature{background:#fff;border:1px solid #e8eaee;border-radius:14px;padding:24px;transition:border-color 0.18s,box-shadow 0.18s,transform 0.18s;}
.st_feature:hover{border-color:#bfeedd;box-shadow:0 10px 28px rgba(15,22,40,0.06);transform:translateY(-2px);}
.st_feature_icon{width:40px;height:40px;border-radius:10px;background:#e6faf4;display:flex;align-items:center;justify-content:center;margin-bottom:14px;}
.st_feature_icon svg{width:20px;height:20px;fill:none;stroke:#18AA88;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.st_feature_title{font-size:15px;font-weight:600;color:#0f1628;margin-bottom:6px;}
.st_feature_text{font-size:13px;color:#5a6378;}

.st_steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.st_step{background:#f8f9fc;border:1px solid #e8eaee;border-radius:14px;padding:26px 24px;}
.st_step_num{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,#18C99F 0%,#1f55c8 100%);color:#fff;font-family:'JetBrains Mono',monospace;font-size:14px;font-weight:500;display:flex;align-items:center;justify-content:center;margin-bottom:14px;}
.st_step_title{font-size:15px;font-weight:600;color:#0f1628;margin-bottom:6px;}
.st_step_text{font-size:13px;color:#5a6378;}

.st_price{max-width:520px;margin:0 auto;background:#fff;border:1px solid #e8eaee;border-radius:18px;padding:36px 34px;text-align:center;box-shadow:0 8px 38px rgba(0,0,0,0.05);}
.st_price_tag{font-size:40px;font-weight:700;color:#0f1628;line-height:1.1;}
.st_price_tag span{font-size:14px;font-weight:500;color:#8b93a8;}
.st_price_text{font-size:14px;color:#5a6378;margin:10px 0 22px;}
.st_price_list{list-style:none;text-align:left;display:inline-flex;flex-direction:column;gap:8px;margin-bottom:26px;}
.st_price_list li{display:flex;align-items:center;gap:9px;font-size:13px;color:#1f2828;}
.st_price_list svg{width:16px;height:16px;fill:none;stroke:#18C99F;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;}

.st_footer{background:#fff;border-top:1px solid #e8eaee;padding:26px 0;}
.st_footer_inner{display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center;}
.st_footer_copy{font-size:12px;color:#8b93a8;}
.st_footer_links{display:flex;justify-content:center;flex-wrap:wrap;gap:8px 22px;}
.st_footer_links a{font-size:12px;color:#5a6378;text-decoration:none;}
.st_footer_links a:hover{color:#18C99F;}

.st_card_page{display:flex;align-items:center;justify-content:center;padding:64px 18px;}
.st_card{background:#fff;border:1px solid #e8eaee;border-radius:18px;box-shadow:0 8px 38px rgba(0,0,0,0.07);padding:44px 38px;width:100%;max-width:460px;text-align:center;}
.st_card_icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,#18C99F 0%,#1f55c8 100%);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;}
.st_card_icon svg{width:26px;height:26px;fill:none;stroke:#fff;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.st_card_title{font-size:24px;font-weight:700;color:#0f1628;margin-bottom:10px;}
.st_card_text{font-size:14px;color:#5a6378;margin-bottom:26px;}
.st_card_actions{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;}

.st_doc{max-width:760px;margin:0 auto;padding:56px 18px 64px;}
.st_doc_title{font-size:32px;font-weight:700;color:#0f1628;margin-bottom:6px;}
.st_doc_date{font-size:12px;color:#8b93a8;margin-bottom:22px;}
.st_doc_notice{background:#fff8e6;border:1px solid #f5e0a8;border-radius:10px;padding:13px 16px;font-size:13px;color:#8a6414;margin-bottom:30px;}
.st_doc h2{font-size:17px;font-weight:600;color:#0f1628;margin:26px 0 8px;}
.st_doc p{font-size:14px;color:#5a6378;margin-bottom:10px;}

.st_card_form{text-align:left;}
.st_card_form .st_card_title,.st_card_form .st_card_text,.st_card_form .st_card_icon{text-align:center;}
.st_form{display:flex;flex-direction:column;gap:14px;}
.st_field{display:flex;flex-direction:column;gap:7px;}
.st_label{font-size:11px;font-weight:500;color:#5a6378;letter-spacing:0.08em;text-transform:uppercase;}
.st_input{width:100%;background:#f8f9fc;border:1.5px solid #e5e8f0;color:#0f1628;padding:13px 15px;font-family:'Sora',sans-serif;font-size:13px;outline:none;border-radius:9px;transition:border-color 0.2s,background 0.2s;}
.st_input:focus{border-color:#18C99F;background:#fff;}
.st_input::placeholder{color:#c0c7d8;}
.st_error{background:#fff2f2;border:1px solid #ffd8d8;border-radius:9px;padding:12px 15px;font-size:12px;color:#c0392b;line-height:1.7;}
.st_btn_full{width:100%;}
.st_form_foot{text-align:center;font-size:12px;color:#8b93a8;margin-top:18px;}
.st_form_foot a{color:#18C99F;font-weight:500;text-decoration:none;}
.st_form_foot a:hover{text-decoration:underline;}
.st_captcha_row{display:flex;align-items:center;gap:10px;}
.st_captcha_row .st_input{flex:1;}
.st_captcha_box{width:88px;height:44px;background:#f8f9fc;border:1.5px solid #e5e8f0;border-radius:9px;display:flex;align-items:center;justify-content:center;overflow:hidden;flex-shrink:0;cursor:pointer;}
.st_captcha_box img{width:100%;height:100%;object-fit:cover;display:block;}
.st_notice{background:#fff8e6;border:1px solid #f5e0a8;border-radius:9px;padding:11px 14px;font-size:12px;color:#8a6414;text-align:center;margin-bottom:16px;}
.st_key_box{background:#f8f9fc;border:1.5px dashed #bfeedd;border-radius:10px;padding:16px 18px;margin-bottom:22px;text-align:center;}
.st_key_label{font-size:11px;font-weight:500;color:#5a6378;letter-spacing:0.08em;text-transform:uppercase;margin-bottom:6px;}
.st_key_value{font-family:'JetBrains Mono',monospace;font-size:14px;font-weight:500;color:#18AA88;word-break:break-all;margin-bottom:8px;}
.st_key_note{font-size:11px;color:#8b93a8;}

@keyframes st_pulse{0%,100%{opacity:1;}50%{opacity:0.3;}}

@media(max-width:960px){
.st_nav{display:none;}
.st_hero_grid{flex-direction:column;align-items:stretch;}
.st_mock{max-width:none;}
.st_features{grid-template-columns:repeat(2,1fr);}
.st_steps{grid-template-columns:1fr;}
}
@media(max-width:600px){
.st_topbar_inner{height:60px;}
.st_logo_name{font-size:16px;}
.st_logo_mark{width:32px;height:32px;}
.st_btn{padding:9px 13px;font-size:12px;}
.st_btn_lg{padding:13px 18px;font-size:13px;}
.st_hero{padding:44px 0 40px;}
.st_hero_title{font-size:30px;}
.st_hero_sub{font-size:15px;}
.st_section{padding:48px 0;}
.st_section_title{font-size:24px;}
.st_features{grid-template-columns:1fr;}
.st_price{padding:30px 22px;}
.st_card{padding:36px 24px;}
.st_doc_title{font-size:26px;}
}

/* COMING SOON PAGE (index.php, Sep 29, 2026) */
.cs_page{flex:1;display:flex;align-items:center;justify-content:center;padding:40px 18px;}
.cs_box{max-width:560px;text-align:center;}
.cs_logo{justify-content:center;margin-bottom:28px;}
.cs_title{font-size:40px;line-height:1.2;font-weight:700;color:#0f1628;letter-spacing:-0.01em;margin:6px 0 16px;}
.cs_title span{background:linear-gradient(135deg,#18C99F 0%,#1f55c8 100%);-webkit-background-clip:text;background-clip:text;color:transparent;}
.cs_text{font-size:16px;color:#5a6378;margin-bottom:26px;}
.cs_foot{font-size:12px;color:#8a92a6;padding:18px;text-align:center;}
@media (max-width:600px){.cs_title{font-size:30px;}}