:root{color:#17324b;font-synthesis:none;text-rendering:optimizelegibility;background:#f7fafc;font-family:Microsoft YaHei,PingFang SC,Noto Sans CJK SC,system-ui,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{min-width:320px;margin:0}button,a{font:inherit}button{cursor:pointer}.site-shell{overflow:clip}.page-width{width:min(100% - 48px,1160px);margin-inline:auto}.site-header{justify-content:space-between;align-items:center;gap:20px;min-height:94px;display:flex}.brand{align-items:center;gap:11px;display:flex}.brand-mark{color:#236fb6;background:#e7f3ff;border-radius:16px;flex:none;place-items:center;width:50px;height:50px;display:grid}.brand-mark svg{width:40px}.brand-copy{gap:2px;display:grid}.brand-copy strong{letter-spacing:.02em;font-size:18px}.brand-copy small{color:#74879a;letter-spacing:.06em;font-size:10px}.header-note{color:#4e728e;white-space:nowrap;background:#eaf5fb;border-radius:99px;padding:9px 16px;font-size:13px}.hero{background:linear-gradient(115deg,#eaf6ff,#e9f8f6);border-radius:30px;grid-template-columns:1fr .88fr;align-items:center;gap:30px;min-height:434px;padding:46px 68px;display:grid;position:relative;overflow:hidden}.hero-copy{z-index:1;position:relative}.eyebrow{color:#167a80;background:#fff;border-radius:99px;padding:8px 13px;font-size:13px;font-weight:700;display:inline-block}.hero h1{letter-spacing:-.035em;max-width:520px;margin:24px 0 18px;font-size:clamp(38px,4.2vw,50px);line-height:1.23}.hero h1 span{color:#267bb4;display:block}.hero-tagline{margin:0;font-size:clamp(18px,1.8vw,22px);font-weight:700;line-height:1.5}.hero-detail{color:#5b7386;max-width:440px;margin:13px 0 26px;font-size:15px;line-height:1.8}.hero-link{color:#fff;background:#246fa8;border-radius:12px;align-items:center;gap:12px;padding:13px 22px;font-size:15px;font-weight:700;text-decoration:none;transition:transform .16s,background .16s;display:inline-flex;box-shadow:0 8px 18px #246fa82e}.hero-link:hover{background:#165a8d;transform:translateY(-2px)}.hero-link:focus-visible,.grade-button:focus-visible,.feature-card:focus-visible{outline-offset:4px;outline:3px solid #185eab}.hero-art{justify-self:center;width:min(100%,410px);height:320px;position:relative}.orbit{border:1.5px dashed #9acddc;border-radius:50%;position:absolute;transform:rotate(-20deg)}.orbit-one{width:330px;height:250px;top:32px;left:38px}.orbit-two{width:250px;height:308px;top:0;left:78px;transform:rotate(30deg)}.art-screen{background:#377fbd;border:8px solid #fff;border-radius:25px;width:228px;height:188px;position:absolute;top:62px;left:92px;overflow:hidden;transform:rotate(-4deg);box-shadow:0 20px 36px #2b72902e}.screen-bar{background:#eaf4ff;gap:5px;height:27px;padding:9px 12px;display:flex}.screen-bar i{background:#a5cbe6;border-radius:50%;width:7px;height:7px}.screen-body{color:#fff;place-items:center;height:calc(100% - 27px);display:grid}.screen-body strong{letter-spacing:-.08em;font-size:72px;line-height:1}.screen-body>span{color:#b9f4e9;font-size:27px;position:absolute;top:44px;left:23px}.screen-body small{color:#a9e6ef;letter-spacing:5px;position:absolute;bottom:20px;right:26px}.art-label{z-index:2;background:#fff;border-radius:13px;padding:10px 15px;font-size:14px;font-weight:700;position:absolute;box-shadow:0 8px 22px #3b799026}.label-top{top:32px;right:8px;transform:rotate(8deg)}.label-bottom{bottom:27px;left:20px;transform:rotate(-7deg)}.art-planet{background:#ffcb73;border-radius:50%;width:48px;height:48px;position:absolute;bottom:20px;right:25px;box-shadow:inset -8px -6px #f4ad54}.art-spark{color:#51b3ab;font-size:28px;position:absolute}.spark-one{top:40px;left:20px}.spark-two{color:#efae51;bottom:74px;right:14px}.grade-section{background:#fff;border:1px solid #e9eff4;border-radius:24px;margin-top:52px;padding:34px 38px 27px;box-shadow:0 8px 28px #254b6310}.section-heading{justify-content:space-between;align-items:end;gap:20px;display:flex}.section-kicker{color:#218e95;letter-spacing:.12em;font-size:12px;font-weight:800}h2{margin:5px 0 7px;font-size:clamp(25px,3vw,31px);line-height:1.35}.section-heading p{color:#728597;margin:0;font-size:14px;line-height:1.7}.heading-star{color:#ffc266;padding-right:12px;font-size:38px}.grade-list{grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin-top:26px;display:grid}.grade-button{color:#24435d;background:#fbfdff;border:2px solid #e4edf3;border-radius:16px;justify-content:center;align-items:center;gap:7px;min-height:100px;font-size:17px;font-weight:700;transition:border-color .16s,background .16s,transform .16s,box-shadow .16s;display:flex;position:relative}.grade-button:hover{background:#f0f9ff;border-color:#78b8d4;transform:translateY(-2px)}.grade-button.is-selected{background:#e8f7ff;border-color:#2385b7;box-shadow:inset 0 0 0 1px #2385b7}.grade-number{color:#2f83a9;background:#e9f3f9;border-radius:10px;place-items:center;width:31px;height:31px;font-size:17px;display:grid}.is-selected .grade-number{color:#fff;background:#2c87b7}.grade-check{color:#2385b7;opacity:0;position:absolute;top:8px;right:11px}.is-selected .grade-check{opacity:1}.grade-note{color:#7e91a0;text-align:center;min-height:21px;margin:18px 0 0;font-size:12px}.features-section{padding-top:66px;padding-bottom:72px}.features-heading{margin-bottom:25px}.coming-note{color:#577a91;white-space:nowrap;background:#eaf3f8;border-radius:99px;align-self:center;padding:9px 13px;font-size:12px}.feature-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;display:grid}.feature-card{background:#fff;border:1px solid #e7eef3;border-radius:20px;min-height:221px;padding:22px;transition:transform .16s,border-color .16s,box-shadow .16s;box-shadow:0 4px 14px #254b6309}.feature-card:hover,.feature-card:focus-visible{border-color:#a7ccdd;transform:translateY(-4px);box-shadow:0 12px 25px #254b6317}.feature-top{justify-content:space-between;align-items:start;display:flex}.feature-icon{background:var(--icon-bg);width:55px;height:55px;color:var(--icon-color);border-radius:15px;place-items:center;display:grid}.feature-icon svg{stroke:currentColor;stroke-width:2.3px;stroke-linecap:round;stroke-linejoin:round;width:30px;height:30px}.feature-index{color:#becbd4;font-size:12px;font-weight:800}.feature-card h3{margin:18px 0 7px;font-size:18px}.feature-card p{color:#708597;margin:0;font-size:13px;line-height:1.65}.feature-status{color:#8b9ba8;align-items:center;gap:6px;margin-top:17px;font-size:12px;display:inline-flex}.status-dot{background:#a7bbc9;border-radius:50%;width:6px;height:6px}.tone-blue{--icon-bg:#e4f2ff;--icon-color:#3e86c8}.tone-peach{--icon-bg:#fff0e5;--icon-color:#e58b5e}.tone-purple{--icon-bg:#f0eaff;--icon-color:#8b70c6}.tone-mint{--icon-bg:#e3f7ee;--icon-color:#48a885}.tone-yellow{--icon-bg:#fff5d9;--icon-color:#d4a23e}.tone-sky{--icon-bg:#e7f4f8;--icon-color:#5699b4}.site-footer{color:#8092a0;border-top:1px solid #e4ebf0;justify-content:space-between;align-items:center;gap:16px;min-height:80px;font-size:12px;display:flex}@media (width<=900px){.hero{grid-template-columns:1fr .65fr;padding:42px}.hero-art{transform-origin:50%;transform:scale(.78)}.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.grade-list{gap:8px}.grade-button{font-size:14px}}@media (width<=640px){.page-width{width:min(100% - 32px,1160px)}.site-header{min-height:76px}.brand-mark{border-radius:13px;width:43px;height:43px}.brand-mark svg{width:35px}.brand-copy strong{font-size:14px}.brand-copy small{font-size:8px}.header-note{display:none}.hero{border-radius:22px;padding:35px 24px 0;display:block}.hero h1{margin:19px 0 15px;font-size:clamp(34px,9vw,46px)}.hero-detail{font-size:14px}.hero-art{transform-origin:top;height:220px;margin:-10px auto 0;transform:scale(.67)}.grade-section{border-radius:20px;margin-top:28px;padding:26px 18px 20px}.heading-star{display:none}.grade-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin-top:22px}.grade-button{min-height:70px;font-size:16px}.grade-button:last-child{grid-column:1/-1}.grade-note{line-height:1.6}.features-section{padding-top:52px;padding-bottom:42px}.features-heading{display:block}.coming-note{margin-top:14px;display:inline-block}.feature-grid{grid-template-columns:1fr;gap:12px}.feature-card{min-height:190px;padding:19px}.site-footer{min-height:0;padding:22px 0;display:grid}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important}}