:root{--bg:#f6f7fb;--white:#fff;--ink:#20243a;--muted:#6d7388;--blue:#4f66e8;--purple:#7d5ee8;--cyan:#4cc7dc;--orange:#f08a55;--green:#29b779;--line:#dde1ec;--shadow:0 20px 55px rgba(58,69,135,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#f5f7fb;background-image:radial-gradient(circle at 10% 12%,rgba(79,102,232,.1),transparent 24%),radial-gradient(circle at 90% 22%,rgba(125,94,232,.09),transparent 24%);font-family:Inter,"Segoe UI","Microsoft YaHei",Arial,sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input{font:inherit}.container{width:min(1200px,calc(100% - 40px));margin:auto}
.announcement{min-height:40px;display:flex;align-items:center;justify-content:center;padding:7px 20px;color:#fff;background:#292e57;font-size:12px;letter-spacing:.04em}.announcement:before{content:"NEW";margin-right:12px;padding:2px 8px;color:#2a315f;background:#bdebf5;border-radius:20px;font-size:9px;font-weight:900}.announcement b{margin-right:12px;color:#cdd5ff}.announcement a{margin-left:16px;color:#d7dbff;border-bottom:1px solid rgba(215,219,255,.65)}
.header{position:sticky;top:0;z-index:30;height:74px;background:rgba(255,255,255,.94);border-bottom:1px solid #dce0eb;backdrop-filter:blur(18px);box-shadow:0 7px 24px rgba(58,69,135,.07)}.nav{height:100%;display:flex;align-items:center;justify-content:space-between}.logo{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:900;letter-spacing:-.03em}.logo-mark{position:relative;width:32px;height:32px;border-radius:10px;background:linear-gradient(145deg,var(--blue),var(--purple));box-shadow:0 8px 18px rgba(79,102,232,.22)}.logo-mark:before{content:"";position:absolute;inset:7px;border:2px solid rgba(255,255,255,.75);border-radius:6px}.logo-mark:after{content:"";position:absolute;inset:12px;border-radius:50%;background:#fff}.navlinks{height:100%;display:flex;align-items:center;gap:4px}.navlinks a{height:100%;display:flex;align-items:center;padding:0 14px;color:#5d6378;border-bottom:3px solid transparent;font-size:13px}.navlinks a:hover,.navlinks a.active{color:#465bd0;border-color:var(--blue);background:#f8f9fc}.actions{display:flex;gap:9px}.btn{min-height:48px;padding:0 22px;display:inline-flex;align-items:center;justify-content:center;color:#465073;background:#fff;border:1px solid #d1d6e4;border-radius:10px;box-shadow:0 5px 15px rgba(58,69,135,.08);font-size:14px;font-weight:800;cursor:pointer;transition:.2s}.btn:hover{transform:translateY(-2px);box-shadow:0 11px 26px rgba(58,69,135,.14)}.btn-dark{color:#fff;background:linear-gradient(135deg,var(--blue),var(--purple));border-color:#5d5ad7}.btn-orange{color:#fff;background:linear-gradient(135deg,#5b75ee,#765ee3);border-color:#6570e2}.btn-sm{min-height:40px;padding:0 16px}
.hero{position:relative;padding:88px 0 68px;overflow:hidden;background:linear-gradient(145deg,rgba(255,255,255,.86),rgba(234,237,250,.6));border-bottom:1px solid #dce1ec}.hero:before{content:"";position:absolute;width:600px;height:520px;right:-150px;top:-200px;border-radius:50%;background:radial-gradient(circle at 35% 40%,rgba(100,114,235,.32),rgba(125,94,232,.1) 55%,transparent 72%)}.hero:after{content:"START FREE · SCALE ANYTIME";position:absolute;right:2%;bottom:18px;color:rgba(69,77,145,.08);font-size:23px;font-weight:900}.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:.93fr 1.07fr;gap:68px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:9px;color:#5263cf;font-size:10px;font-weight:900;letter-spacing:.17em;text-transform:uppercase}.eyebrow:before{content:"";width:28px;height:4px;border-radius:4px;background:linear-gradient(90deg,var(--blue),var(--purple))}.hero h1{margin:21px 0 26px;font-size:clamp(52px,6.2vw,84px);line-height:1.02;letter-spacing:-.065em}.hero h1 span{color:transparent;background:linear-gradient(135deg,var(--blue),var(--purple));-webkit-background-clip:text}.lead{max-width:610px;color:#626a80;font-size:18px}.hero-actions{display:flex;gap:11px;margin:33px 0 16px}.micro{color:#7d8498;font-size:11px}.visual{position:relative;padding:16px}.visual-frame{position:relative;padding:38px 10px 10px;border:1px solid #c6cce0;border-radius:20px;background:#fff;box-shadow:var(--shadow)}.visual-frame:before{content:"向日葵 SaaS 控制台 · AI 画质增强";position:absolute;top:10px;left:18px;color:#66708a;font-size:10px;font-weight:800}.visual-frame:after{content:"●  ●  ●";position:absolute;top:8px;right:18px;color:var(--purple);font-size:9px;letter-spacing:4px}.visual-frame img{width:100%;aspect-ratio:3/2;object-fit:cover;border:1px solid #d2d7e6;border-radius:13px;filter:saturate(.68);box-shadow:0 14px 34px rgba(54,64,128,.15)}.metal-node{position:absolute;z-index:3;padding:10px 14px;color:#48527a;background:#fff;border:1px solid #c9cfe0;border-radius:12px;box-shadow:var(--shadow);font-size:10px;font-weight:900}.node-a{left:-5px;top:17%}.node-b{right:-5px;bottom:9%;color:#5263cf}.node-dot{display:inline-block;width:8px;height:8px;margin-right:7px;border-radius:50%;background:var(--green)}.metrics{background:#2d315b;color:#fff;border-top:1px solid #4d5278;border-bottom:1px solid #171a34}.metric-grid{display:grid;grid-template-columns:repeat(4,1fr)}.metric{position:relative;padding:25px 34px;border-right:1px solid #505478}.metric:first-child{border-left:1px solid #505478}.metric:after{content:"";position:absolute;left:34px;bottom:0;width:45px;height:3px;background:linear-gradient(90deg,var(--cyan),var(--purple))}.metric strong{display:block;font-size:24px;letter-spacing:-.03em}.metric span{color:#abb0ca;font-size:11px}.logo-belt{padding:68px 0;background:#fff;border-bottom:1px solid #dde1eb}.logo-belt p{text-align:center;margin-bottom:30px;color:#6f7588;font-size:13px}.logo-matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.logo-matrix span{position:relative;min-height:190px;display:flex;flex-direction:column;padding:31px 24px;color:#6d7488;border:1px solid #d6dae6;border-radius:16px;font-size:12px;background:#fff;box-shadow:var(--shadow)}.logo-matrix span:nth-child(2){border:2px solid var(--blue);transform:translateY(-8px)}.logo-matrix span:nth-child(2):after{content:"推荐";position:absolute;right:15px;top:14px;padding:3px 8px;color:#fff;background:var(--blue);border-radius:12px;font-size:9px}.logo-matrix small{color:#7f8699;font-size:9px;font-weight:900;letter-spacing:.14em}.logo-matrix b{display:block;margin:18px 0 10px;color:#2a3152;font-size:21px}.logo-matrix span:before{content:"✓ 按需升级";order:5;margin-top:auto;color:#239161;font-size:11px;font-weight:800}
.section{position:relative;padding:100px 0;border-bottom:1px solid #dbe0ea}.section.white{background:#fff}.section.dark{color:#fff;background:linear-gradient(145deg,#2d315b,#423e75)}.section-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:47px}.section-head h2{max-width:760px;margin:12px 0 0;font-size:clamp(34px,4vw,52px);line-height:1.12;letter-spacing:-.05em}.section-head p{max-width:410px;margin:0 0 4px;color:#6c7387}.dark .section-head p{color:#c3c5d8}.dark .eyebrow{color:#d9dcff}
.grid-6{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.feature{position:relative;min-height:275px;padding:32px;background:#fff;border:1px solid #d3d8e5;border-radius:16px;box-shadow:var(--shadow);overflow:hidden}.feature:before{content:"INCLUDED";position:absolute;right:14px;top:13px;color:#8c93a6;font-size:8px;font-weight:900}.feature:after{content:"";position:absolute;left:20%;right:20%;bottom:0;height:4px;background:linear-gradient(90deg,var(--blue),var(--purple))}.ficon{width:50px;height:48px;margin-bottom:47px;display:grid;place-items:center;color:#5663cd;background:#f0f1fb;border:1px solid #c8cde0;border-radius:12px;font-size:12px;font-weight:900}.feature h3{margin:0 0 8px;font-size:20px}.feature p{color:#6b7286;font-size:13px}.more{color:#5260c8;font-size:12px;font-weight:800}.more:hover{color:#353f9b}
.scenes{display:grid;gap:22px}.scene{display:grid;grid-template-columns:1.08fr .92fr;min-height:390px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.17);border-radius:18px;box-shadow:0 24px 60px rgba(20,19,55,.27);overflow:hidden}.scene:nth-child(even) .scene-media{order:2}.scene-media{position:relative;overflow:hidden}.scene-media:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent 68%,rgba(57,53,103,.9))}.scene:nth-child(even) .scene-media:after{background:linear-gradient(-90deg,transparent 68%,rgba(57,53,103,.9))}.scene-media img{width:100%;height:100%;object-fit:cover;filter:saturate(.56) contrast(1.05)}.scene-copy{padding:52px;display:flex;flex-direction:column;justify-content:center}.scene-no{color:#b7c0ff;font-size:10px;font-weight:900;letter-spacing:.2em}.scene h3{margin:21px 0 14px;font-size:36px;letter-spacing:-.04em}.scene p{color:#d0d0df}.tags{display:flex;gap:7px;flex-wrap:wrap;margin-top:13px}.tags span{padding:4px 10px;color:#fff;background:rgba(25,24,57,.25);border:1px solid rgba(255,255,255,.18);border-radius:15px;font-size:10px}
.compare-wrap{overflow:auto;background:#fff;border:1px solid #d0d5e2;border-radius:16px;box-shadow:var(--shadow)}.compare{width:100%;min-width:870px;border-collapse:collapse}.compare th,.compare td{padding:17px 14px;border-right:1px solid #dfe2eb;border-bottom:1px solid #dfe2eb;text-align:center;font-size:13px}.compare th:first-child,.compare td:first-child{padding-left:27px;text-align:left}.compare thead th{background:#eef0f7;font-size:12px}.compare .ours{color:#4f5dc1;background:#eeeffb;font-weight:800}.yes{color:#219161;font-weight:800}.no{color:#92949d}.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.review{position:relative;padding:32px;background:#fff;border:1px solid #d2d7e4;border-radius:16px;box-shadow:var(--shadow)}.review:before{content:"CUSTOMER";position:absolute;right:16px;top:14px;color:#9499aa;font-size:8px;font-weight:900}.review:after{content:"";position:absolute;left:20%;right:20%;bottom:0;height:4px;background:linear-gradient(90deg,var(--blue),var(--purple))}.stars{color:#edac3e;letter-spacing:.15em}.quote{min-height:145px;margin:23px 0 30px;color:#41465a;font-size:16px}.person{display:flex;align-items:center;gap:12px;padding-top:17px;border-top:1px solid #e0e2ea}.avatar{width:42px;height:42px;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,var(--blue),var(--purple));border-radius:10px;font-weight:900}.person small{display:block;color:#797f91}
.faq{display:grid;grid-template-columns:.65fr 1.35fr;gap:76px}.faq-list{background:#fff;border:1px solid #d0d5e2;border-radius:16px;box-shadow:var(--shadow);overflow:hidden}.faq-list details{border-bottom:1px solid #dfe2eb}.faq-list details:last-child{border-bottom:0}details{padding:20px 22px}summary{display:flex;justify-content:space-between;list-style:none;font-weight:800;cursor:pointer}summary:after{content:"+";width:26px;height:26px;display:grid;place-items:center;color:#fff;background:var(--blue);border-radius:50%}details[open] summary:after{content:"−";background:var(--purple)}details p{margin:15px 35px 2px 0;color:#6b7286;font-size:13px}.cta{position:relative;padding:88px 0;overflow:hidden;color:#fff;background:linear-gradient(135deg,#4f62de,#775ad9);border-top:1px solid #7885e7;border-bottom:1px solid #3931a3}.cta:before{content:"";position:absolute;width:520px;height:520px;right:5%;top:-300px;border-radius:50%;border:70px solid rgba(255,255,255,.08)}.cta:after{content:"START FREE";position:absolute;right:3%;bottom:-38px;color:rgba(255,255,255,.07);font-size:86px;font-weight:900}.cta-inner{position:relative;z-index:2}.cta .eyebrow{color:#e0e2ff}.cta .eyebrow:before{background:#fff}.cta h2{margin:14px 0 13px;font-size:clamp(40px,5vw,62px);line-height:1.06;letter-spacing:-.06em}.cta p{color:#dee0f5}.articles{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.article{position:relative;padding:25px;background:#fff;border:1px solid #d2d7e4;border-radius:16px;box-shadow:var(--shadow);overflow:hidden}.article:before{content:"";position:absolute;left:20%;right:20%;top:0;height:4px;background:linear-gradient(90deg,var(--blue),var(--purple))}.article-cover img{width:calc(100% + 50px);height:145px;margin:-25px -25px 20px;object-fit:cover;border-bottom:1px solid #dce0e9;filter:saturate(.6)}.date{color:#7a8092;font-size:10px;font-weight:800;letter-spacing:.12em}.article h3{margin:18px 0 10px;font-size:20px;line-height:1.4}.article p{color:#6b7286;font-size:13px}
.footer{padding:64px 0 24px;color:#f5f5fb;background:#242741;border-top:1px solid #484b65}.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:45px}.footer p,.footer a{color:#8d91a5;font-size:12px}.footer h4{margin:0 0 14px;color:#f0f1f6}.footer-col a{display:block;margin:8px 0}.copyright{display:flex;justify-content:space-between;margin-top:46px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);color:#656a7e;font-size:10px}
.page-hero{position:relative;padding:85px 0 72px;overflow:hidden;background:linear-gradient(145deg,#fff,#eceefa);border-bottom:1px solid #dbe0eb}.page-hero:before{content:"SaaS";position:absolute;right:-10px;top:-120px;color:rgba(79,102,232,.07);font-size:330px;font-weight:900}.page-hero:after{content:"PLANS / DOWNLOAD / SUPPORT";position:absolute;right:-20px;bottom:-28px;color:rgba(64,72,139,.05);font-size:62px;font-weight:900}.page-hero .container{position:relative;z-index:2}.page-hero h1{margin:18px 0;font-size:clamp(45px,6vw,70px);line-height:1.05;letter-spacing:-.06em}.page-hero p{max-width:690px;color:#656c80;font-size:17px}
.downloads{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.download-card{position:relative;min-height:355px;padding:29px;display:flex;flex-direction:column;background:#fff;border:1px solid #d0d5e2;border-radius:16px;box-shadow:var(--shadow);overflow:hidden}.download-card:after{content:"✓ INCLUDED";position:absolute;right:14px;bottom:14px;color:#299367;font-size:9px;font-weight:900}.download-card.featured{border:2px solid var(--blue);box-shadow:7px 7px 0 #e0e2ed}.download-card.featured:before{content:"RECOMMENDED";position:absolute;right:14px;top:14px;color:#5866cd;font-size:8px;font-weight:900}.platform{display:flex;align-items:center;justify-content:space-between}.platform h3{font-size:24px}.badge{padding:3px 8px;color:#5863bd;background:#eeeff9;border:1px solid #c9cce0;border-radius:12px;font-size:9px;font-weight:900}.download-card ul{flex:1;padding-left:18px;color:#686f83;font-size:13px}.version{margin-top:12px;color:#7b8193;font-size:10px}.download-banner{display:grid;grid-template-columns:1.1fr .9fr;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.17);border-radius:18px;box-shadow:0 24px 60px rgba(20,19,55,.27);overflow:hidden}.download-banner img{width:100%;height:100%;object-fit:cover;filter:saturate(.56)}.download-banner>div{padding:52px}.download-banner h2{font-size:37px;line-height:1.15}.download-banner p{color:#d0d0df}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.step{position:relative;padding:25px;background:#fff;border:1px solid #d2d7e4;border-radius:16px;box-shadow:var(--shadow)}.step:after{content:"✓";position:absolute;right:17px;top:15px;color:#299367;font-weight:900}.step b{color:#5663cd;font-size:33px;font-weight:900}.step h3{margin:14px 0 6px}
.searchbox{display:flex;max-width:660px;margin-top:29px;padding:5px;background:#fff;border:1px solid #d0d5e2;border-radius:14px;box-shadow:var(--shadow)}.searchbox input{flex:1;padding:9px 13px;color:#474e69;background:#f8f9fc;border:0;outline:none}.help-layout{display:grid;grid-template-columns:235px 1fr;gap:60px}.help-side{position:sticky;top:104px;align-self:start;padding:19px;background:#fff;border:1px solid #d2d7e4;border-radius:16px;box-shadow:var(--shadow)}.help-side b{display:block;padding-bottom:11px;border-bottom:4px solid var(--blue)}.help-side a{display:block;padding:8px 3px;color:#676e82;border-bottom:1px solid #dfe2eb;font-size:12px}.help-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.help-card{position:relative;padding:24px;background:#fff;border:1px solid #d2d7e4;border-radius:16px;box-shadow:var(--shadow)}.help-card:after{content:"✓";position:absolute;right:15px;top:12px;color:#299367;font-weight:900}.help-card h3{margin:0 0 9px;font-size:18px}.help-card p{color:#6b7286;font-size:13px}.help-group{margin-bottom:68px;scroll-margin-top:112px}.help-group h2{margin:11px 0 28px;font-size:33px;letter-spacing:-.04em}.hidden{display:none!important}
@media(max-width:920px){.navlinks{display:none}.hero-grid,.scene,.faq,.download-banner,.help-layout{grid-template-columns:1fr}.visual{margin-top:15px}.grid-6,.downloads,.reviews,.articles,.logo-matrix{grid-template-columns:repeat(2,1fr)}.logo-matrix span:nth-child(2){transform:none}.scene:nth-child(even) .scene-media{order:0}.scene-media{min-height:300px}.scene-media:after,.scene:nth-child(even) .scene-media:after{background:linear-gradient(0deg,rgba(57,53,103,.9),transparent 45%)}.help-side{position:static}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.container{width:min(100% - 28px,1200px)}.announcement{font-size:10px}.announcement a{display:none}.header{height:64px}.actions .btn:first-child{display:none}.hero{padding:58px 0}.hero h1{font-size:48px}.hero-actions{flex-direction:column}.metric-grid{grid-template-columns:repeat(2,1fr)}.metric{padding:18px 14px;border-bottom:1px solid #505478}.section{padding:70px 0}.section-head{display:block}.section-head p{margin-top:17px}.grid-6,.downloads,.reviews,.articles,.help-grid,.steps,.logo-matrix{grid-template-columns:1fr}.scene-copy{padding:32px 25px}.scene h3{font-size:29px}.faq{gap:30px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.copyright{display:block}.page-hero{padding:60px 0}.searchbox{display:block}.searchbox .btn{width:100%;margin-top:5px}}