:root{--blue:#1854e8;--dark:#142e5c;--ink:#283c59;--muted:#71819a;--sky:#edf3ff;--line:#e4eaf4;--orange:#ed792f;--paper:#f7f9fd}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;color:var(--ink);background:white;line-height:1.6}button{font:inherit;cursor:pointer}a{color:inherit;text-decoration:none}button,a,summary{ -webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,summary:focus-visible,.semester-scroll:focus-visible{outline:3px solid #ed792f;outline-offset:4px}button{border:0}p,h1,h2,h3,h4,h5{margin:0}.container{max-width:1180px;margin:auto;padding:0 48px}.top{position:sticky;top:0;z-index:20;background:#fffffff2;backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.head{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}.head img{width:175px;height:48px;object-fit:contain;object-position:left}.head nav{display:flex;gap:36px;font-size:13px;font-weight:600}.head nav a{padding:8px 0;color:#4e6080}.head nav a:hover{color:var(--blue)}
.hero{background:linear-gradient(112deg,#f5f8ff 0%,#f5f8ff 55%,#eaf1ff 100%);position:relative;overflow:hidden}.hero:before{content:'';position:absolute;width:530px;height:530px;border:1px solid #ccdcfa;border-radius:50%;right:-200px;top:-210px;box-shadow:0 0 0 70px #e4edfc50,0 0 0 140px #e4edfc35;pointer-events:none}.hero>.container{position:relative;min-height:min(780px,calc(100svh - 76px));display:flex;flex-direction:column;justify-content:center}.hero-layout{display:grid;grid-template-columns:1.3fr .7fr;align-items:center;gap:32px;padding:52px 0 40px}.eyebrow,.section-label{font-size:11px;letter-spacing:.18em;font-weight:700;color:var(--blue)}.eyebrow:before{content:'';display:inline-block;width:22px;height:2px;background:var(--orange);margin:0 10px 3px 0}.hero-label{color:#697e9c;font-size:13px;margin:25px 0 12px}.hero h1{font-size:clamp(34px,4.4vw,58px);line-height:1.22;letter-spacing:-.035em;font-weight:750;color:var(--dark)}.hero h1 span{color:var(--blue)}.hero p{font-size:14px;color:#6a7c96;margin-top:18px}.button{display:inline-flex;align-items:center;gap:48px;padding:12px 22px;background:var(--blue);color:white;font-size:13px;border-radius:5px;margin-top:25px;box-shadow:0 7px 18px #1854e81a}.button:hover{background:#103fc4}.hero-emblem{justify-self:end;width:265px;height:290px;display:grid;place-items:center;background:linear-gradient(150deg,#3676f7,#124acb);color:white;transform:rotate(-5deg);border-radius:100px 100px 24px 24px;box-shadow:14px 14px 0 #d6e3ff;position:relative}.hero-emblem:after{content:'✦';position:absolute;right:-15px;top:12px;color:var(--orange);font-size:50px}.emblem-inner{transform:rotate(5deg);text-align:center;font-size:52px;line-height:1.2;letter-spacing:.12em;font-weight:800}.emblem-inner span{font-size:42px}.emblem-inner small{display:block;font-size:10px;letter-spacing:.03em;font-weight:400;margin-top:18px}.brand-overview{display:grid;grid-template-columns:1fr 1fr;gap:56px;padding:26px 0 32px;border-top:1px solid #dbe4f5}.brand-story h3{font-size:17px;color:var(--dark)}.brand-story p{font-size:12px;line-height:1.8;margin:9px 0 0;color:#687b96}.advantages{display:grid;gap:9px}.adv{display:grid;grid-template-columns:22px 72px 1fr;gap:8px;align-items:baseline;font-size:12px}.adv span{font-size:10px;color:var(--orange);font-weight:700}.adv b{color:var(--dark)}.adv p{margin:0;font-size:11px;line-height:1.6}
.section{padding:66px 0}.section h2{font-size:34px;line-height:1.3;letter-spacing:-.035em;color:var(--dark);margin:10px 0 20px}.subline{font-size:14px;color:var(--muted);margin:-8px 0 30px}.soft{background:var(--paper)}.teacher-list{display:grid;gap:14px}.teacher{display:grid;grid-template-columns:152px 1fr;overflow:hidden;background:white;min-height:180px;border-radius:10px}.teacher-photo{background:linear-gradient(130deg,#e2ecff,#eef3fb);display:flex;flex-direction:column;justify-content:center;align-items:center;gap:12px}.photo-symbol{font-size:65px;font-weight:800;line-height:1;color:#8da9d7}.teacher-photo span{font-size:10px;color:#7387a7}.teacher-content{padding:20px 28px}.teacher-top{display:flex;justify-content:space-between;align-items:center}.subject{font-size:11px;color:var(--blue);font-weight:650}.teacher-top small{color:#a9b4c6;font-size:10px;letter-spacing:.1em}.teacher-content h3{font-size:25px;color:var(--dark);margin:6px 0 2px}.school{font-size:12px;color:#687b97}.teacher-content strong{display:inline-block;color:var(--orange);font-size:12px;margin-top:7px}.teacher-content p{font-size:12px;color:#6c7e98;margin-top:3px}
.grades{display:flex;gap:5px;border-bottom:1px solid var(--line);margin:32px 0 24px}.grade-tab{background:none;min-width:115px;padding:12px 28px;color:#7889a2;font-size:17px;font-weight:700;border-bottom:3px solid transparent}.grade-tab.selected{color:var(--blue);border-bottom-color:var(--blue)}.grade-intro{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}.grade-intro strong{font-size:18px;color:var(--dark)}.grade-intro span{font-size:12px;color:var(--muted)}.products{display:grid;gap:12px}.product{background:#fff;border-radius:9px;overflow:hidden;border:1px solid var(--line)}.product-header{width:100%;display:flex;align-items:center;gap:22px;text-align:left;background:#f7faff;padding:23px 26px;transition:background .2s}.product-header:hover{background:#edf3ff}.product-mark{font-size:28px;font-weight:500;color:#bbceef;letter-spacing:-.04em}.product-names{flex:1;display:flex;flex-direction:column;gap:4px}.product-names strong{font-size:22px;font-weight:700;color:var(--dark)}.product-names small{font-size:12px;color:#7285a4}.product-action{display:flex;align-items:center;gap:18px;color:var(--blue);font-size:12px;white-space:nowrap}.arrow{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:#e7efff;font-size:22px;transition:transform .2s}.product-header[aria-expanded=true]{background:linear-gradient(100deg,#174dd1,#2863ec)}.product-header[aria-expanded=true] .product-names strong,.product-header[aria-expanded=true] .product-action{color:#fff}.product-header[aria-expanded=true] .product-names small,.product-header[aria-expanded=true] .product-mark{color:#bcd1ff}.product-header[aria-expanded=true] .arrow{transform:rotate(180deg);background:#ffffff20}.product-body[hidden]{display:none!important}.detail-content{padding:0 28px 18px}.detail-section{padding:24px 0;border-bottom:1px solid var(--line)}.detail-section:last-child{border:0}.detail-heading{display:flex;align-items:center;gap:10px;margin-bottom:15px}.detail-heading>span{font-size:10px;font-weight:700;letter-spacing:.07em;color:var(--blue)}.detail-heading h4{font-size:17px;color:var(--dark);font-weight:700}.overview-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;border-bottom:1px solid var(--line)}.overview-grid .detail-section{border:0}.editable-paragraph{font-size:13px;color:#61728d;line-height:1.9;white-space:pre-line}.term-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(95px,1fr));gap:12px}.term-card{border-left:2px solid #d8e5fc;padding:0 0 0 12px}.term-card>b{font-size:13px;color:var(--blue);display:block;margin-bottom:6px}.term-card div{font-size:11px;display:flex;flex-direction:column;gap:1px;margin-bottom:4px}.term-card div span{color:#8b99b0}.term-card div strong{font-weight:500;color:#546985}.schedule-wrap{border-radius:7px;background:#f7f9fd;overflow:hidden}.schedule-compare{width:100%;border-collapse:collapse;table-layout:fixed;font-size:12px}.schedule-compare th,.schedule-compare td{text-align:left;padding:10px 16px;border-bottom:1px solid #e7edf6;overflow-wrap:anywhere}.schedule-compare thead th{color:var(--blue);background:#edf3ff;font-weight:650}.schedule-compare th:first-child{width:76px}.schedule-compare tbody th{font-weight:600;color:var(--dark)}.schedule-compare td b{display:block;font-weight:500;color:#677c99}.schedule-compare td span{display:block;font-size:12px;color:var(--dark);font-variant-numeric:tabular-nums}.schedule-compare td small{display:block;font-size:10px;color:var(--muted)}.schedule-compare tr:last-child>*{border:0}
.switch-subjects{display:flex;gap:4px;width:max-content;background:#f0f4fb;padding:4px;border-radius:6px;margin:0 0 12px}.switch-subjects button{background:transparent;font-size:12px;color:#6c7c96;padding:6px 20px;border-radius:4px;font-weight:600}.switch-subjects button.current{background:white;color:var(--blue);box-shadow:0 1px 4px #1b3e7810}.compare-caption{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;font-size:11px;color:#8795aa}.swipe-hint{display:none;color:var(--blue);white-space:nowrap;font-size:10px}.swipe-hint b{font-size:17px;margin-left:4px}.semester-scroll{overflow-x:auto;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch;scrollbar-width:thin;scrollbar-color:#b9cef3 #eff3fa;border-radius:6px;padding-bottom:5px}.semester-columns{display:grid;grid-template-columns:repeat(var(--terms),minmax(245px,1fr));gap:14px}.semester-column{background:#f8faff;border-radius:6px;overflow:hidden;min-width:0}.semester-column>header{padding:12px 14px;background:#eaf1ff;display:flex;justify-content:space-between;align-items:center;gap:10px;border-bottom:2px solid #dce7fb}.semester-column:nth-child(2)>header{background:#eef3fb;border-bottom-color:#cedcf4}.semester-column:nth-child(3)>header{background:#eaf6fc;border-bottom-color:#c9e6f2}.semester-column>header>div{display:flex;align-items:center;gap:7px}.term-dot{width:5px;height:5px;background:var(--blue);border-radius:50%}.semester-column:nth-child(2) .term-dot{background:var(--orange)}.semester-column:nth-child(3) .term-dot{background:#3699c7}.semester-column h5{font-size:14px;color:var(--dark)}.semester-column>header small{font-size:10px;color:#8494ac}.lesson-list{list-style:none;padding:0;margin:0}.lesson{min-height:38px;padding:9px 12px;display:flex;align-items:baseline;gap:9px;border-bottom:1px solid #e7edf7;font-size:12px;line-height:1.5}.lesson-no{font-variant-numeric:tabular-nums;color:#92a4bf;font-size:10px;min-width:19px;flex-shrink:0}.lesson-topic{flex:1;color:#3b506e}.lesson-type{font-size:9px;color:#8b9bb2;white-space:nowrap}.lesson-type.video{color:#d87936}.pending .lesson-topic,.outline-pending>span:last-child{color:#9aa8bd;font-size:11px}.lesson:nth-child(even),.outline-row:nth-child(even){background:#ffffff90}.lesson:last-child,.outline-row:last-child{border-bottom:0}.outline-row{border-bottom:1px solid #e7edf7}.outline-row summary,.outline-pending{display:flex;gap:9px;align-items:baseline;min-height:38px;padding:9px 12px;line-height:1.5;font-size:12px;list-style:none;cursor:pointer}.outline-row summary::-webkit-details-marker{display:none}.outline-row summary b{flex:1;font-weight:500;color:#3b506e}.reveal{color:#7394c3;font-size:13px;transition:transform .2s}.outline-row details[open] .reveal{transform:rotate(45deg)}.outline-row details[open]{background:#eef3fd}.knowledge{padding:0 12px 12px 40px}.knowledge p{font-size:11px;color:#536b8c;line-height:1.8;white-space:pre-line}.knowledge>div{display:flex;flex-wrap:wrap;gap:4px 10px;font-size:9px;color:#8b9ab0;margin-top:6px}.term-empty{padding:24px 16px;font-size:12px;color:var(--muted)}
.table-scroll{overflow-x:auto}.data-table{width:100%;border-collapse:collapse;font-size:12px;text-align:left}.data-table th{padding:12px 14px;background:#edf3ff;font-weight:600;color:#4f6d9c;white-space:nowrap}.data-table td{padding:14px;border-bottom:1px solid var(--line);color:#667d9c}.price-table .final-price{font-size:19px;font-weight:750;color:var(--blue);font-variant-numeric:tabular-nums}.price-table tbody tr:last-child{background:#f4f8ff}.price-table s{color:#9ba9bd}.empty{background:#f7f9fd;padding:18px;border-radius:5px;font-size:12px;color:#8897ad}.extra-text{padding-top:15px}.subhead{font-size:12px;font-weight:650;color:var(--dark);margin-bottom:5px}.subhead:before{content:'';display:inline-block;width:3px;height:10px;background:var(--orange);margin-right:7px}.extra-text p{font-size:12px;color:#71839e;line-height:1.8;white-space:pre-line}.mobile-price{display:none}footer{background:#142e5c;color:#c5d3eb;padding:28px 0}footer .container{display:flex;justify-content:space-between;align-items:center;gap:18px;font-size:12px}footer img{width:135px;filter:brightness(0) invert(1)}footer small{font-size:10px;color:#8fa6cc}
@media(max-width:900px){.container{padding:0 28px}.hero-emblem{width:220px;height:250px}.hero-layout{padding:42px 0 32px}.brand-overview{gap:28px}.overview-grid{grid-template-columns:1fr}.overview-grid .detail-section+section{padding-top:0}.overview-grid{gap:0}.semester-columns{gap:10px;grid-template-columns:repeat(var(--terms),minmax(230px,1fr))}.swipe-hint{display:inline-flex;align-items:center}.detail-content{padding:0 22px 16px}}
@media(max-width:600px){html{scroll-padding-top:72px}.container{padding:0 18px}.head{height:62px;gap:8px}.head img{width:132px;height:40px}.head nav{gap:14px;font-size:11px}.hero>.container{min-height:calc(100svh - 62px)}.hero-layout{display:block;position:relative;padding:30px 0 24px}.eyebrow{font-size:9px;letter-spacing:.11em}.hero-label{font-size:11px;margin:22px 0 10px}.hero h1{font-size:clamp(30px,8vw,39px);position:relative;z-index:1;letter-spacing:-.04em}.hero p{font-size:12px;margin-top:13px}.hero-emblem{position:absolute;width:86px;height:114px;right:2px;top:45px;opacity:.16;border-radius:40px 40px 10px 10px;box-shadow:6px 6px 0 #d6e3ff;pointer-events:none}.emblem-inner{font-size:23px}.emblem-inner span{font-size:19px}.emblem-inner small{display:none}.hero-emblem:after{font-size:27px;right:-6px}.button{padding:10px 17px;margin-top:20px;font-size:12px}.brand-overview{grid-template-columns:1fr;gap:16px;padding:18px 0 24px}.brand-story h3{font-size:14px}.brand-story p{font-size:11px;line-height:1.8;margin-top:6px}.adv{grid-template-columns:19px 64px 1fr;gap:7px;font-size:11px}.adv p{font-size:10px}.advantages{gap:7px}.section{padding:42px 0}.section h2{font-size:28px;margin-bottom:18px}.subline{font-size:12px;margin-bottom:24px}.teacher{grid-template-columns:88px 1fr;min-height:170px;border-radius:6px}.teacher-content{padding:14px 15px}.teacher-content h3{font-size:22px}.teacher-content p{font-size:11px}.teacher-photo span{font-size:8px}.photo-symbol{font-size:40px}.school{font-size:10px}.teacher-content strong{font-size:10px}.teacher-top small{font-size:8px}.grades{margin:24px 0 20px}.grade-tab{flex:1;min-width:0;font-size:16px;padding:10px 16px}.grade-intro{display:block;margin-bottom:14px}.grade-intro strong{font-size:16px}.grade-intro span{display:block;font-size:11px;margin-top:3px}.product-header{padding:18px 14px;gap:12px}.product-mark{font-size:22px}.product-names strong{font-size:19px}.product-names small{font-size:10px}.product-action{font-size:10px;gap:7px}.arrow{width:24px;height:24px;font-size:18px}.detail-content{padding:0 14px 10px}.detail-section{padding:20px 0}.detail-heading{gap:8px;margin-bottom:12px}.detail-heading h4{font-size:16px}.editable-paragraph{font-size:12px;line-height:1.8}.term-grid{gap:8px}.term-card{padding-left:9px}.term-card>b{font-size:12px}.term-card div{font-size:10px}.schedule-compare{font-size:10px}.schedule-compare th,.schedule-compare td{padding:9px 8px}.schedule-compare th:first-child{width:43px}.schedule-compare td span{font-size:10px}.schedule-compare td small{font-size:9px}.switch-subjects button{padding:5px 17px;font-size:11px}.compare-caption{font-size:9px;gap:6px}.swipe-hint{font-size:9px}.semester-columns{grid-template-columns:repeat(var(--terms),minmax(238px,1fr));gap:10px}.semester-scroll{margin-right:-5px;padding-right:5px;scroll-snap-type:x proximity}.semester-column{scroll-snap-align:start}.semester-column>header{padding:10px 12px}.lesson,.outline-row summary,.outline-pending{min-height:37px;font-size:11px;padding:9px 10px;gap:7px}.knowledge{padding-left:36px}.desktop-price{display:none}.mobile-price{display:grid;gap:1px;background:var(--line);border-radius:6px;overflow:hidden}.price-card{padding:13px 12px;background:#f8faff}.price-card-top{display:flex;align-items:baseline;justify-content:space-between;gap:10px}.price-card-top b{font-size:12px;color:var(--dark);font-weight:600}.price-card-top strong{font-size:22px;color:var(--blue);letter-spacing:-.04em}.price-card-bottom{display:flex;gap:4px 10px;flex-wrap:wrap;color:#8293ad;font-size:9px;margin-top:5px}.extra-text p{font-size:11px}footer .container{flex-direction:column;gap:10px;text-align:center}footer{padding:24px 0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
@media(max-width:360px){.head img{width:108px}.head nav{gap:10px;font-size:10px}.hero h1{font-size:30px}.product-action{gap:5px}.product-header{gap:9px}.compare-caption{flex-wrap:wrap}.switch-subjects button{padding:6px 14px}}
@media(max-width:600px) and (max-height:700px){.hero-layout{padding:22px 0 18px}.hero-label{margin-top:16px}.hero p{margin-top:10px}.button{margin-top:16px}.brand-overview{padding:14px 0 20px;gap:12px}}
/* 结构优化：课程节数与大纲行数独立；原图按阶段浏览。 */
.course-counts{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px;font-size:10px}.course-counts>span{background:#eef3fc;padding:6px 9px;border-radius:4px;color:#7386a2}.course-counts b{font-weight:600;color:var(--dark)}.course-counts small{display:block;color:#7d8da5;font-size:9px}.course-counts>strong{align-self:center;color:var(--blue);font-size:11px;padding:4px 0}.semester-columns{align-items:start}.semester-column h5 em{font-size:10px;font-style:normal;font-weight:400;margin-left:6px;color:#8395b1}.semester-column>header{flex-wrap:wrap;gap:4px 8px}.semester-column>header small{font-size:9px}.poster-scroll .semester-columns{grid-template-columns:repeat(var(--terms),minmax(340px,1fr))}.poster-preview{position:relative;display:block;width:100%;padding:0;background:white;text-align:left;border:0}.poster-preview img{display:block;width:100%;height:auto}.poster-preview>span{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;font-size:11px;color:var(--blue);background:#edf3ff}.poster-preview:hover>span{background:#dfeaff}.outline-posters{display:grid;gap:12px}.outline-empty{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:10px;min-height:200px;background:linear-gradient(145deg,#f5f8ff,#edf3fc)}.outline-empty span{font-size:15px;color:#8da2bf}.outline-empty small{font-size:11px;color:#a0afc5}.compare-nav{display:flex;align-items:center;gap:6px}.compare-nav .swipe-hint{display:inline-flex;align-items:center}.compare-nav button{width:28px;height:26px;border-radius:4px;background:#edf3ff;color:var(--blue);font-size:14px}.outline-viewer{width:min(96vw,1150px);max-width:96vw;padding:0;border:0;border-radius:10px;color:var(--ink);background:#f5f8ff;max-height:94svh;overflow:hidden}.outline-viewer::backdrop{background:#0a1b3ccc;backdrop-filter:blur(4px)}.viewer-toolbar{padding:12px 18px;background:#fff;display:flex;align-items:center;justify-content:space-between;gap:12px}.viewer-toolbar strong{font-size:13px}.viewer-toolbar>div{display:flex;gap:8px}.viewer-toolbar button{font-size:11px;padding:8px 12px;color:var(--blue);background:#edf3ff;border-radius:4px;white-space:nowrap}.viewer-help{font-size:11px;padding:8px 18px;color:#8495af}.viewer-canvas{overflow:auto;height:calc(90svh - 94px);padding:0 14px 14px;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}.viewer-canvas img{display:block;width:100%;height:auto;margin:auto;background:white}.viewer-canvas.zoomed img{width:1500px;max-width:none;margin:0}.viewer-canvas:focus-visible{outline:2px solid var(--orange);outline-offset:-2px}body:has(.outline-viewer[open]){overflow:hidden}@media(max-width:600px){.poster-scroll .semester-columns{grid-template-columns:repeat(var(--terms),minmax(280px,1fr))}.viewer-toolbar{padding:10px;gap:8px;align-items:start}.viewer-toolbar strong{font-size:11px;line-height:1.5;max-width:45%}.viewer-toolbar>div{gap:4px}.viewer-toolbar button{font-size:10px;padding:7px 9px}.viewer-canvas{padding:0 5px 8px;height:calc(90svh - 100px)}.viewer-help{padding:8px 10px;font-size:10px}.viewer-canvas.zoomed img{width:1100px}.compare-caption{flex-wrap:wrap}.semester-column h5 em{font-size:9px}}
/* 已确认展示：讲次 / 课程内容 / 备注；一轮、二轮分别两列。 */
.lesson{display:grid;grid-template-columns:23px minmax(0,1fr) 52px;gap:8px;align-items:baseline}.lesson-note{font-size:10px;color:#7186a5;text-align:right;overflow-wrap:anywhere}.lesson-columns-heading{display:grid;grid-template-columns:23px minmax(0,1fr) 52px;gap:8px;padding:7px 12px;background:#f0f4fb;font-size:9px;color:#8b9cb6}.lesson-columns-heading:empty{display:none}.lesson-columns-heading span:last-child{text-align:right}.round-content+.round-content{margin-top:24px}.round-title{display:flex;align-items:center;gap:12px;padding:0 0 10px}.round-title h5{font-size:15px;color:var(--dark)}.round-title span{font-size:11px;color:#7b8fae}.round-content .compare-caption>span{font-size:10px}@media(max-width:600px){.lesson{grid-template-columns:21px minmax(0,1fr) 48px;gap:6px}.lesson-note{font-size:9px}.lesson-columns-heading{grid-template-columns:21px minmax(0,1fr) 48px;gap:6px;padding:7px 10px}.round-title h5{font-size:14px}.term-card>b{font-size:10px}}
/* 平台 / 退费 / 联系；所有选中状态以品牌蓝突出。 */
.head nav{gap:12px;white-space:nowrap}.head nav a{padding:7px 9px;border-radius:5px;font-size:12px;transition:background .15s,color .15s}.head nav a.active{background:var(--blue);color:white}.switch-subjects button.current{background:var(--blue);color:white}.download-link.clicked,.download-link:active{background:var(--dark);color:white;box-shadow:0 0 0 3px #c9dbff}.download-link:hover{background:var(--blue);color:white}.platform-intro{display:flex;align-items:center;gap:17px;margin-bottom:24px}.app-symbol{display:grid;place-items:center;background:linear-gradient(140deg,#5082ff,#1754df);width:58px;height:58px;color:white;font-size:29px;font-weight:700;border-radius:14px}.platform-intro h3{font-size:22px;color:var(--dark)}.platform-intro p{color:var(--muted);font-size:13px;margin-top:5px}.download-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.download-grid article{padding:22px 0 0;border-top:1px solid #dce5f4}.device-label{font-size:10px;letter-spacing:.1em;color:#8b9db9}.download-grid h3{font-size:19px;color:var(--dark);margin-top:8px}.download-grid p{font-size:12px;color:#798da8;margin-top:9px;min-height:38px}.download-link{display:inline-flex;align-items:center;justify-content:space-between;gap:30px;margin-top:18px;padding:10px 15px;background:#e7efff;color:var(--blue);border-radius:5px;font-size:12px;font-weight:600;transition:background .15s,color .15s}.refund-tabs{display:flex;gap:6px;margin-bottom:22px;padding:4px;background:#f0f4fc;width:max-content;border-radius:6px}.refund-tabs button{padding:9px 22px;border-radius:4px;background:transparent;font-size:13px;color:#6b7f9d}.refund-tabs button.selected{background:var(--blue);color:white}.refund-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}.refund-grid>article{padding:20px 22px;background:#f6f9ff;border-radius:7px}.refund-kind{display:flex;gap:10px;align-items:center;margin-bottom:18px}.refund-kind>span{font-size:11px;color:var(--orange)}.refund-kind h3{font-size:18px;color:var(--dark)}.refund-grid h4{font-size:13px;color:var(--blue);margin-bottom:12px}.refund-grid ul{padding:0 0 0 16px;margin:0;color:#526b8e;font-size:12px;line-height:1.9}.refund-grid ul li{margin-top:7px}.refund-grid li::marker{color:var(--orange)}.refund-after{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:12px;font-weight:600;color:#476082}.refund-exception{font-size:11px;line-height:1.8;color:#8a9bb3;margin-top:8px}.refund-grid ol{list-style:none;margin:0;padding:0;display:grid;gap:15px}.refund-grid ol li{display:flex;align-items:baseline;gap:11px}.refund-grid ol span{color:#9eb1cf;font-size:10px;flex-shrink:0}.refund-grid ol p{font-size:12px;color:#526b8e;line-height:1.85}.refund-bottom{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-top:18px}.refund-bottom p{font-size:11px;line-height:1.8;color:#8798b1}.text-action{background:none;padding:7px 0;color:var(--blue);font-size:11px;white-space:nowrap}.text-action:active{color:var(--orange)}.contact-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:start}.advisor-contact{display:flex;justify-content:space-between;align-items:center;gap:22px}.advisor-copy h3{font-size:22px;margin:8px 0;color:var(--dark)}.advisor-copy p{font-size:13px;color:#7186a2;line-height:1.8}.advisor-copy small{display:block;margin-top:15px;font-size:11px;color:#8a9db7}.contact-qr{background:white;padding:12px;border-radius:7px;flex-shrink:0;width:150px}.contact-qr img{display:block;width:100%;height:auto}.contact-qr span{font-size:10px;color:#8a9db7;display:block;margin-top:8px}.qr-pending{width:130px;min-height:145px;flex-shrink:0;display:flex;flex-direction:column;align-items:center;justify-content:center;border-radius:7px;background:#e7effd;color:#718caf;gap:8px}.qr-pending>span{font-size:28px;color:#95acd0}.qr-pending b{font-size:12px;font-weight:500}.qr-pending small{font-size:10px;color:#95a7c1}.support-guide{border-top:1px solid #dbe5f5;border-bottom:1px solid #dbe5f5}.support-guide summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:15px;padding:18px 0;cursor:pointer}.support-guide summary::-webkit-details-marker{display:none}.support-guide summary b{display:block;font-size:16px;color:var(--dark)}.support-guide summary small{display:block;font-size:11px;color:#8a9db7;margin-top:5px}.support-expand{color:var(--blue);font-size:22px;transition:transform .15s}.support-guide[open] .support-expand{transform:rotate(45deg)}.support-guide[open] summary b{color:var(--blue)}.support-details{padding-bottom:18px}.support-steps{list-style:none;padding:0;margin:0 0 20px;display:grid;gap:9px}.support-steps li{font-size:12px;color:#5d7599;display:flex;align-items:center;gap:10px}.support-steps span{width:20px;height:20px;display:grid;place-items:center;font-size:10px;color:var(--blue);background:#e5edfc;border-radius:50%}.support-excerpts{display:grid;gap:16px}.support-excerpts figure{margin:0}.excerpt-window{overflow:hidden;position:relative;border-radius:5px;background:white}.excerpt-window img{position:absolute;max-width:none;height:auto}.support-my{width:100px;aspect-ratio:230/170}.support-my img{width:469.565%;left:-343.478%;top:-1294.118%}.support-online{width:100%;aspect-ratio:1000/240}.support-online img{width:108%;left:-4%;top:-691.667%}.support-excerpts figcaption{font-size:10px;color:#899bb7;margin-top:6px}@media(max-width:900px){.head{height:auto;min-height:76px;flex-wrap:wrap;padding:12px 0;gap:8px}.head nav{width:100%;overflow-x:auto;gap:4px;padding:2px 0;scrollbar-width:none}.head nav a{flex-shrink:0}.head nav::-webkit-scrollbar{display:none}.contact-layout{gap:24px}.advisor-contact{align-items:start;gap:14px}.qr-pending{width:110px}.refund-grid{gap:16px}.hero>.container{min-height:min(780px,calc(100svh - 112px))}html{scroll-padding-top:120px}}@media(max-width:600px){.head{min-height:98px;padding:8px 0 6px;gap:3px}.head img{height:34px}.head nav{gap:2px}.head nav a{font-size:10px;padding:6px 8px}.hero>.container{min-height:calc(100svh - 98px)}html{scroll-padding-top:110px}.platform-intro{gap:12px;margin-bottom:20px}.platform-intro h3{font-size:18px}.platform-intro p{font-size:11px}.app-symbol{width:45px;height:45px;font-size:24px;border-radius:10px;flex-shrink:0}.download-grid{gap:16px}.download-grid article{padding-top:15px}.download-grid h3{font-size:15px}.download-grid p{font-size:10px;min-height:48px}.download-link{gap:9px;font-size:10px;padding:9px 10px;margin-top:12px}.device-label{font-size:8px}.refund-tabs button{font-size:12px;padding:8px 20px}.refund-grid{grid-template-columns:1fr;gap:12px}.refund-grid>article{padding:17px}.refund-kind h3{font-size:16px}.refund-kind{margin-bottom:12px}.refund-bottom{flex-direction:column;gap:6px}.contact-layout{grid-template-columns:1fr;gap:26px}.advisor-copy h3{font-size:19px}.advisor-copy p{font-size:12px}.qr-pending{width:110px;min-height:130px}.support-excerpts{grid-template-columns:90px 1fr;align-items:center;gap:16px}.support-my{width:80px}.support-guide summary b{font-size:15px}.contact-qr{width:130px}}
.grade-tab.selected{background:#edf3ff;border-radius:6px 6px 0 0}.viewer-toolbar button[aria-pressed=true]{background:var(--blue);color:white}.compare-nav button:active{background:var(--blue);color:white}.outline-row details[open] summary b{color:var(--blue)}
/* 用户提供的品牌图：仅以布局窗口展示所需区域，原文件保留。 */
.platform-visual{display:grid;grid-template-columns:1fr 1.15fr;align-items:center;gap:30px;background:white;border-radius:10px;padding:24px;margin-bottom:24px;box-shadow:0 8px 30px #174dd008}.platform-visual .platform-intro{margin:0;align-items:center}.app-logo-window{position:relative;display:block;width:66px;aspect-ratio:1;overflow:hidden;border-radius:17px;flex-shrink:0;background:#0738dd}.app-logo-window img{position:absolute;width:249.37%;height:auto;max-width:none;left:-74.6%;top:0}.platform-banner{position:relative;overflow:hidden;border-radius:7px;aspect-ratio:960/366;background:#0869fc}.platform-banner img{position:absolute;width:113.125%;height:auto;max-width:none;left:-5.3125%;top:0}.support-single{margin:0;max-width:360px}.support-screenshot{position:relative;overflow:hidden;width:100%;aspect-ratio:1080/760;border-radius:8px;background:#fff;box-shadow:0 4px 18px #183e7710}.support-screenshot img{position:absolute;width:100%;height:auto;top:-215.79%;left:0}.support-single figcaption{font-size:10px;color:#8396b2;margin-top:9px;text-align:center}@media(max-width:900px){.platform-visual{grid-template-columns:1fr;gap:20px}.platform-banner{max-width:620px;width:100%}.platform-visual .platform-intro{align-items:center}}@media(max-width:600px){.platform-visual{padding:17px;gap:16px;margin-bottom:20px}.app-logo-window{width:53px;border-radius:14px}.platform-banner{border-radius:5px}.support-single{max-width:330px}.support-single figcaption{font-size:9px}}
/* 视觉精修：统一层级、留白和圆角，沿用已确认的内容与交互。 */
:root{--blue:#2058db;--dark:#172f56;--ink:#334965;--muted:#71839d;--line:#e4eaf2;--paper:#f7f9fc;--orange:#e9813b;--radius:8px}
body{letter-spacing:.01em;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}.top{border-bottom-color:#e6ebf2;box-shadow:0 3px 16px #142e5c03}.head nav a{position:relative;border-radius:0;font-weight:500;padding:10px 8px;color:#687b96}.head nav a.active{color:var(--blue);background:none;font-weight:650}.head nav a.active:after{content:'';position:absolute;left:8px;right:8px;bottom:2px;height:2px;background:var(--blue);border-radius:2px}.head nav a:hover{color:var(--blue);background:#f5f8fd}.hero{background:linear-gradient(115deg,#f8faff,#eef3fc)}.hero:before{opacity:.55}.hero h1{font-weight:700;letter-spacing:-.035em}.hero-emblem{box-shadow:12px 14px 0 #dce6f7;background:linear-gradient(155deg,#437ae9,#174bb9)}.hero-emblem:after{font-size:38px}.eyebrow{color:#5978aa;font-weight:600}.hero-label{letter-spacing:.04em}.button{border-radius:6px;box-shadow:0 7px 16px #2058db18}.section{padding:64px 0}.section-label{font-size:10px;font-weight:500;letter-spacing:.16em;color:#91a0b5}.section h2{font-size:34px;line-height:1.28;font-weight:700;letter-spacing:.03em;margin-top:9px;margin-bottom:22px}.subline{color:#8291a6;font-size:13px;line-height:1.8}.brand-overview{border-top-color:#dce5f2}.brand-story p{color:#6f8099}.adv span{color:#c68d58}.soft{background:var(--paper)}
.teacher-list{gap:0;background:white;border-radius:var(--radius);padding:0 24px}.teacher{border-radius:0;background:none;border-bottom:1px solid var(--line);grid-template-columns:132px 1fr;margin:0;padding:20px 0;min-height:190px}.teacher:last-child{border-bottom:0}.teacher-photo{border-radius:6px;background:linear-gradient(145deg,#eef3fb,#e2eaf7)}.photo-symbol{color:#98accb;font-weight:650;font-size:56px}.teacher-content{padding:4px 0 4px 28px}.teacher-content h3{font-size:25px;font-weight:650;margin:8px 0 5px}.teacher-content strong{font-weight:500;color:#b78557}.teacher-content p{line-height:1.8;margin-top:5px}.teacher-top small{font-size:9px;letter-spacing:.14em}.subject{font-size:11px;font-weight:600}
.grades{gap:20px;margin:30px 0 24px}.grade-tab{padding:12px 16px;min-width:90px;background:none;font-size:16px;font-weight:600;border-radius:0}.grade-tab.selected{background:none;border-radius:0;border-bottom-color:var(--blue)}.grade-intro strong{font-size:17px;font-weight:650}.grade-intro span{font-size:11px;color:#8999af}.products{gap:12px}.product{border-color:#e0e7f1;border-radius:var(--radius);box-shadow:none}.product-header{padding:22px 26px;background:#fbfcfe;gap:22px}.product-mark{font-size:23px;font-weight:400;color:#b3c2d7}.product-names strong{font-size:21px;font-weight:650}.product-names small{color:#8a9ab1;font-size:11px}.product-action{font-size:11px;font-weight:500;gap:12px}.arrow{width:28px;height:28px;background:#edf2fa;color:var(--blue)}.product-header[aria-expanded=true]{background:#edf3fd;box-shadow:inset 3px 0 var(--blue)}.product-header[aria-expanded=true] .product-names strong{color:var(--dark)}.product-header[aria-expanded=true] .product-action{color:var(--blue)}.product-header[aria-expanded=true] .product-mark{color:#839fc6}.product-header[aria-expanded=true] .product-names small{color:#7890b1}.product-header[aria-expanded=true] .arrow{background:#dce8fb}.detail-content{padding:0 28px 14px}.detail-section{padding:24px 0}.detail-heading{gap:12px;margin-bottom:16px}.detail-heading>span{color:#98a9c0;font-size:10px;font-weight:500}.detail-heading h4{font-size:17px;font-weight:650}.editable-paragraph{font-size:13px;line-height:1.85}.overview-grid{gap:30px}.course-counts{gap:10px;margin-top:13px}.course-counts>span{padding:3px 0;background:none;border-radius:0;font-size:10px;color:#7b8da7}.course-counts>span+span{border-left:1px solid var(--line);padding-left:10px}.course-counts>strong{font-weight:600;margin-left:5px}.term-card{border-left:1px solid #dbe5f3}.term-card>b{font-weight:600}.term-card div strong{color:#627794}
.schedule-wrap{border-radius:6px;background:#fafbfd}.schedule-compare thead th{background:#f0f4fa;color:#5e789d;font-weight:600}.schedule-compare tbody th{font-weight:500}.switch-subjects{border-radius:6px;background:#f1f4f9;padding:3px;margin-bottom:12px}.switch-subjects button{padding:6px 20px;font-weight:500;border-radius:4px}.switch-subjects button.current{background:var(--blue);color:white;box-shadow:0 2px 6px #2058db15}.compare-caption{color:#8c9bb0;font-size:10px}.compare-nav button{background:#f0f4fa;border:1px solid #e5ebf4;border-radius:4px}.semester-column{border-radius:6px;background:#fcfdff}.semester-column>header,.semester-column:nth-child(2)>header,.semester-column:nth-child(3)>header{background:#f0f4fa;border-bottom:1px solid #dfe8f3;padding:11px 13px}.semester-column h5{font-size:13px;font-weight:600}.semester-column>header small{color:#8093ae}.term-dot{height:4px;width:4px}.lesson{padding:9px 12px;min-height:38px;border-bottom-color:#edf0f5}.lesson:nth-child(even),.outline-row:nth-child(even){background:#f7f9fc}.lesson-topic{font-weight:500;color:#3f5575}.lesson.pending .lesson-topic{font-weight:400;color:#91a0b6}.lesson-no{color:#9eacc0;font-size:10px}.lesson-note{color:#8799b3;font-size:9px}.outline-row{border-bottom-color:#edf0f5}.outline-row summary b{font-weight:500}.outline-empty{background:#f7f9fc;min-height:170px}.outline-empty span{font-size:13px}.round-title h5{font-size:14px;font-weight:650}.round-title span{font-size:10px}.poster-preview>span{background:#f0f4fa;color:#6b85aa;font-size:10px}.price-table thead th{background:#f0f4fa;color:#6d82a2;font-size:11px}.price-table td{padding:15px 14px;font-size:12px}.price-table .final-price{font-size:22px;letter-spacing:-.03em}.price-table tbody tr:last-child{background:#f4f7fd}.extra-text p{font-size:12px;color:#7b8da7}.extra-text .subhead{font-weight:500}.subhead:before{width:2px;background:#d79b6c}
.platform-visual{background:linear-gradient(105deg,#fff,#eef4ff);border-radius:var(--radius);box-shadow:none;padding:28px;gap:28px}.platform-intro h3{font-size:22px;font-weight:650}.platform-intro p{font-size:12px;line-height:1.8;color:#7c8fab}.platform-banner{aspect-ratio:960/236;border-radius:6px}.platform-banner img{top:-55.085%}.download-grid{gap:30px}.download-grid article{border-top-color:#dfe6f0;padding-top:20px}.download-grid h3{font-size:17px;font-weight:600}.download-grid p{line-height:1.8;color:#8393aa}.download-link{border-radius:5px;background:white;border:1px solid #dbe5f3;color:var(--blue);font-size:12px;padding:10px 17px}.download-link.clicked{background:var(--blue);color:white;border-color:var(--blue);box-shadow:0 0 0 2px #dae5f8}.device-label{letter-spacing:.12em;color:#9aa9be}.refund-tabs{border-radius:6px;background:#f1f4f9}.refund-tabs button{border-radius:4px;font-size:12px}.refund-grid{gap:24px}.refund-grid>article{background:#f8fafd;border-radius:var(--radius);padding:22px}.refund-kind h3{font-size:17px;font-weight:650}.refund-kind>span{color:#a2b0c4}.refund-grid h4{font-weight:600;font-size:12px}.refund-grid ul,.refund-grid ol p,.refund-after{font-size:12px}.refund-exception{color:#7f91a9}.refund-bottom{border-top:1px solid var(--line);padding-top:14px}.advisor-copy h3{font-size:21px;font-weight:650}.advisor-copy p{font-size:12px;line-height:1.8}.support-guide summary b{font-size:15px;font-weight:600}.support-single{max-width:330px}.support-screenshot{box-shadow:none;border:1px solid #e0e7f2}.qr-pending{background:#edf2fa;border-radius:var(--radius)}footer{background:#183151;padding:30px 0}footer small{color:#97a9c1}
@media(max-width:900px){.platform-visual{grid-template-columns:1fr 1fr;padding:22px;gap:20px}.teacher-list{padding:0 20px}.overview-grid{gap:0}.head nav a{padding:8px}.section{padding:54px 0}}
@media(max-width:600px){.section{padding:42px 0}.section h2{font-size:28px;letter-spacing:.03em}.section-label{font-size:9px}.subline{font-size:12px;line-height:1.8}.hero-emblem{box-shadow:none}.hero h1{font-size:clamp(30px,8vw,39px)}.head nav a{font-size:10px;padding:7px 8px}.teacher-list{padding:0 14px}.teacher{grid-template-columns:84px 1fr;padding:16px 0;min-height:174px}.teacher-content{padding:0 0 0 15px}.teacher-content h3{font-size:22px;margin:6px 0 3px}.teacher-content p{font-size:11px}.photo-symbol{font-size:39px}.grades{gap:12px;margin:24px 0 20px}.grade-tab{min-width:0;padding:10px 16px;font-size:15px}.product-header{padding:18px 14px;gap:11px}.product-mark{font-size:20px}.product-names strong{font-size:18px}.product-action{font-size:10px;gap:7px}.product-names small{font-size:10px}.detail-content{padding:0 14px 10px}.detail-section{padding:21px 0}.detail-heading h4{font-size:16px}.detail-heading{gap:9px;margin-bottom:13px}.editable-paragraph{font-size:12px}.course-counts>span{font-size:9px}.course-counts>strong{font-size:10px}.semester-column h5{font-size:13px}.lesson{padding:9px 10px;font-size:12px;min-height:38px}.lesson.pending .lesson-topic{font-size:11px}.lesson-note{font-size:9px}.compare-caption{font-size:9px}.schedule-compare th,.schedule-compare td{padding:10px 8px}.price-card{background:#fbfcfe;padding:14px 12px}.price-card-top b{font-weight:500}.price-card-top strong{font-size:24px}.platform-visual{grid-template-columns:1fr;padding:18px;gap:18px}.platform-intro h3{font-size:19px}.platform-intro p{font-size:11px}.download-grid{gap:18px}.download-grid h3{font-size:15px}.download-grid p{font-size:11px;min-height:58px}.download-link{font-size:10px;padding:9px 10px;gap:8px}.refund-grid>article{padding:18px}.refund-grid{gap:12px}.refund-kind h3{font-size:16px}.advisor-copy h3{font-size:19px}.support-single{max-width:310px}.refund-bottom{gap:6px}}
/* 保留原标题排版，仅优化配色。 */
:root{--blue:#235bdd;--dark:#183866;--ink:#364e6d;--muted:#7687a1;--orange:#e78c50;--paper:#f5f8fd}
.section-label{color:#819ac0}.section h2{color:#204777}.soft{background:#f3f7fd}#courses h2{color:#2257b0}#platform h2{color:#245b88}#refund h2{color:#30486b}#contact h2{color:#275382}.product-header{background:#f7faff}.product-header[aria-expanded=true]{background:#eaf2ff}.semester-column>header{background:#eef4fd}.refund-grid>article{background:#f3f7fd}.platform-visual{background:linear-gradient(110deg,#ffffff,#eaf2ff)}
/* 根据用户指定参考图统一明亮蓝白视觉，保留备份版内容与结构。 */
:root{--blue:#1253ed;--dark:#102650;--ink:#203653;--muted:#667d9e;--sky:#edf5ff;--line:#dce8fb;--orange:#fb7b26;--paper:#f4f8ff}
.hero{background:radial-gradient(circle at 90% 25%,#ccecff 0,transparent 34%),linear-gradient(115deg,#f3f8ff 0,#e8f1ff 66%,#e0f3ff 100%)}.hero:before{display:none}.hero h1{color:#10203c;font-size:clamp(38px,4.8vw,64px);font-weight:750;line-height:1.25;letter-spacing:-.035em}.hero h1 span{color:var(--blue)}.hero p{color:#526e96}.eyebrow,.section-label{color:#1253ed;font-size:11px;font-weight:750;letter-spacing:.17em}.eyebrow:before{display:none}.hero-label{color:#6480a5}.hero-emblem{width:300px;height:300px;border-radius:36% 64% 67% 33%/46% 43% 57% 54%;background:linear-gradient(140deg,#4080fc,#0c42d5 75%);transform:rotate(-7deg);box-shadow:28px 25px 0 #ffffffa6,0 30px 65px #215cdc20}.hero-emblem:after{display:none}.emblem-inner{transform:rotate(7deg);font-size:60px}.emblem-inner span{font-size:48px}.emblem-inner small{font-size:11px;margin-top:15px}.button{background:var(--blue);border-radius:10px;box-shadow:0 10px 24px #1253ed28;font-weight:650}.section h2{color:#112b58;font-size:36px;font-weight:700;letter-spacing:-.025em}.soft{background:#f4f8ff}.brand-story h3{color:#203755}.brand-story p{color:#627b9c}.adv span{color:var(--orange)}.adv b{color:#203d68}.adv p{color:#6c83a4}.brand-overview{border-top-color:#d7e5f8}.head nav a.active{color:var(--blue)}.head nav a.active:after{background:var(--blue)}.grade-tab.selected{color:var(--blue);border-bottom-color:var(--blue)}.product-header{background:#f5f9ff}.product-header[aria-expanded=true]{background:#eaf2ff;box-shadow:inset 3px 0 var(--blue)}.product-names strong{color:#183461}.switch-subjects button.current,.refund-tabs button.selected{background:var(--blue);color:white}.semester-column>header,.semester-column:nth-child(2)>header,.semester-column:nth-child(3)>header{background:#eaf2ff;border-bottom-color:#d6e4fa}.semester-column h5{color:#244979}.schedule-compare thead th{background:#eaf2ff;color:#416696}.detail-heading>span{color:var(--blue)}.detail-heading h4{color:#1a3969}.teacher-photo{background:linear-gradient(140deg,#eaf4ff,#d4e3fa)}.teacher-content h3{color:#143464}.teacher-content strong{color:#ed7b32}.price-table .final-price,.price-card-top strong{color:var(--blue)}.price-table thead th{background:#eaf2ff;color:#456895}.platform-visual{background:linear-gradient(110deg,#fff,#e7f1ff)}.refund-grid>article{background:#f1f6ff}.refund-kind>span{color:var(--orange)}.qr-pending{background:#e7efff}.download-link{color:var(--blue);border-color:#cfdef8}.download-link.clicked,.download-link:hover{background:var(--blue);color:white}footer{background:#102b59}
@media(max-width:900px){.hero-emblem{width:240px;height:255px}.emblem-inner{font-size:48px}.emblem-inner span{font-size:39px}}
@media(max-width:600px){.hero h1{font-size:clamp(34px,8.8vw,43px)}.hero-emblem{width:120px;height:140px;right:2px;top:44px;opacity:.13;box-shadow:none}.emblem-inner{font-size:31px}.emblem-inner span{font-size:25px}.emblem-inner small{display:none}.section h2{font-size:29px}.eyebrow,.section-label{font-size:9px}.button{border-radius:8px}}
/* 用户确认的蓝 / 黑 / Logo橙黄体系：全页标题、序号与操作统一。 */
:root{--heading:#17212f;--logo-gold:#f58b20;--orange:#f58b20}
.section h2,.brand-story h3,.grade-intro strong,.product-names strong,.detail-heading h4,.teacher-content h3,.platform-intro h3,.download-grid h3,.refund-kind h3,.advisor-copy h3,.support-guide summary b,.round-title h5,.semester-column h5{color:var(--heading);font-weight:750}.section h2{font-size:36px}.product-header[aria-expanded=true] .product-names strong{color:var(--heading);font-weight:750}.section-label,.eyebrow{color:var(--blue)}
.product-mark,.product-header[aria-expanded=true] .product-mark{color:var(--logo-gold);font-size:13px;font-weight:800;letter-spacing:0;min-width:20px}.detail-heading>span,.adv span,.refund-kind>span{color:var(--logo-gold);font-weight:750}.teacher-content strong{color:#d58225}.teacher-top small{color:#c5873d}.subhead:before{background:var(--logo-gold)}.semester-column .term-dot,.semester-column:nth-child(2) .term-dot,.semester-column:nth-child(3) .term-dot{background:var(--logo-gold)}.lesson-no{color:#ae8559}.refund-grid ol span{color:#ce8b39}.support-steps span{color:#bb761f;background:#fff1dd}.qr-pending>span{color:var(--logo-gold)}
.grades{display:flex;gap:6px;background:#f0f4ff;border:0;border-radius:14px;padding:7px;margin:30px 0 24px}.grade-tab{flex:1;min-width:0;border:0;border-radius:10px;padding:12px 16px;color:#697e9f;font-size:16px;font-weight:700}.grade-tab.selected{background:var(--blue);color:white;border:0;border-radius:10px;box-shadow:0 5px 13px #1253ed18}.grade-tab:hover:not(.selected){background:#e5edff;color:var(--blue)}
.product{border:1px solid #d9e5fb;border-radius:15px;background:#fff}.product-header{background:#fff;padding:23px 24px;gap:18px}.product-header:hover{background:#f7faff}.product-names strong{font-size:21px}.product-names small{font-size:12px;color:#7186a7}.product-header[aria-expanded=true]{background:#eef4ff;box-shadow:inset 3px 0 var(--blue)}.product-action{color:var(--blue);font-weight:650;font-size:12px}.arrow{background:none;color:var(--blue);width:23px;height:25px}.product-header[aria-expanded=true] .arrow{background:none}.detail-heading h4{font-weight:700}.schedule-compare tbody th{color:var(--heading);font-weight:650}.lesson-topic{color:#2e425e}.price-table td:first-child,.price-card-top b{color:var(--heading);font-weight:650}.extra-text .subhead{color:var(--heading);font-weight:650}.download-link.clicked,.download-link:hover,.switch-subjects button.current,.refund-tabs button.selected{background:var(--blue);color:#fff}.support-guide[open] summary b{color:var(--blue)}
@media(max-width:600px){.section h2{font-size:29px}.grades{gap:4px;padding:5px;border-radius:11px;margin:24px 0 20px}.grade-tab,.grade-tab.selected{border-radius:8px;padding:10px 12px;font-size:15px}.product-header{padding:19px 14px;gap:10px}.product-names strong{font-size:19px}.product-mark{font-size:11px;min-width:17px}.product-names small{font-size:10px}.product-action{font-size:10px;gap:6px}.product{border-radius:12px}.detail-heading h4{font-size:16px}}
/* 第四版确认备份之后：仅在品牌图形内部嵌入实体空间。 */
.hero-emblem{position:relative;isolation:isolate;background:linear-gradient(140deg,#3c7cf7,#1048d8 78%)}
.hero-emblem:before{content:'';position:absolute;inset:0;border-radius:inherit;z-index:0;background-image:linear-gradient(140deg,#3678ee99,#0c43d5bb),url('assets/optimized/hero-space.webp');background-size:cover,500% auto;background-position:center,9% 88%;background-repeat:no-repeat;opacity:.4;pointer-events:none}
.emblem-inner{position:relative;z-index:1;text-shadow:0 2px 8px #0c36a22b}
/* 扩大空间取景：从招牌下方展示完整玻璃入口、前台与室内。 */
.hero-emblem:before{background-image:linear-gradient(140deg,#2a6ce866,#0b40c977),url('assets/optimized/hero-space.webp');background-size:cover,225% auto;background-position:center,72% 100%;opacity:.72}
/* 照片及品牌文字保持正向，避免建筑线条随图形旋转。 */
.hero-emblem,.emblem-inner{transform:none}
/* 实景视频：保留首屏，按需打开播放。 */
.environment-entry{align-self:flex-end;display:flex;align-items:center;gap:10px;width:max-content;margin:12px 0 0;padding:8px 13px;border:1px solid #d5e3fa;border-radius:7px;background:#ffffffb3;color:var(--blue);font-size:11px;font-weight:600}.environment-entry small{color:#889cba;font-size:9px;font-weight:400}.play-dot{display:grid;place-items:center;width:23px;height:23px;background:#e6efff;border-radius:50%;font-size:17px}.environment-entry:hover,.environment-entry:active{background:#e2edff;border-color:#a9c4f1}.environment-viewer{padding:0;border:0;border-radius:10px;background:#fff;width:min(960px,94vw);max-width:94vw;max-height:92svh;overflow:auto}.environment-viewer::backdrop{background:#091c3bd9;backdrop-filter:blur(4px)}.environment-viewer video{display:block;width:100%;max-height:76svh;background:#0a1428;aspect-ratio:16/9}.environment-viewer .viewer-toolbar>button{border-radius:5px;padding:8px 12px;background:#eaf2ff;color:var(--blue);font-size:11px}.environment-note{font-size:11px;color:#889bb7;padding:10px 15px}.environment-viewer .viewer-toolbar{padding:12px 16px}body:has(.environment-viewer[open]){overflow:hidden}@media(max-width:600px){.environment-entry{font-size:10px;gap:8px;margin-top:12px;padding:7px 10px}.environment-entry small{font-size:8px}.environment-viewer .viewer-toolbar{padding:10px}.environment-viewer .viewer-toolbar strong{max-width:none}.environment-note{font-size:10px}}
/* 王伟老师样例：真实肖像、明确资历与橙黄色数字。 */
.teacher.teacher-profile{grid-template-columns:195px 1fr;gap:0;min-height:285px;padding:24px 0}.teacher-portrait{position:relative;border-radius:8px;overflow:hidden;background:#e9edf1;aspect-ratio:4/5}.teacher-portrait img{display:block;width:100%;height:100%;object-fit:cover;object-position:50% 25%;transform:scale(1.1);transform-origin:50% 25%}.teacher-profile .teacher-content{padding:6px 0 4px 34px;align-self:center}.teacher-profile .teacher-top .subject{display:inline-block;color:var(--blue);background:#eef4ff;padding:4px 10px;border-radius:5px;font-size:11px}.teacher-profile .teacher-content h3{font-size:32px;font-weight:750;color:#17212f;margin:9px 0 5px;letter-spacing:.03em}.teacher-credential{font-size:15px;font-weight:600;color:#334c6e}.teacher-highlights{display:flex;gap:38px;margin:20px 0 17px}.teacher-highlights>div+div{border-left:1px solid #e4eaf3;padding-left:38px}.teacher-profile .teacher-highlights strong{font-size:30px;font-weight:750;color:var(--logo-gold);margin:0;line-height:1.15;font-variant-numeric:tabular-nums;letter-spacing:-.04em}.teacher-highlights strong span{font-size:13px;font-weight:600;letter-spacing:0;margin-left:3px}.teacher-profile .teacher-highlights p{font-size:12px;color:#7186a5;margin:6px 0 0;line-height:1.6}.teacher-scores{font-size:12px;color:#71839f;line-height:1.8;padding-top:12px;border-top:1px solid #e7edf7;max-width:400px}@media(max-width:600px){.teacher.teacher-profile{grid-template-columns:105px 1fr;min-height:222px;padding:19px 0}.teacher-portrait{aspect-ratio:auto;min-height:200px;height:100%}.teacher-portrait img{object-position:50% 10%;transform:none}.teacher-profile .teacher-content{padding:0 0 0 16px}.teacher-profile .teacher-content h3{font-size:25px;margin:7px 0 4px}.teacher-profile .teacher-top .subject{font-size:10px;padding:3px 7px}.teacher-credential{font-size:12px}.teacher-highlights{gap:12px;margin:16px 0 12px}.teacher-highlights>div{flex:1;min-width:0}.teacher-highlights>div+div{padding-left:12px}.teacher-profile .teacher-highlights strong{font-size:24px}.teacher-highlights strong span{font-size:10px;margin-left:2px}.teacher-profile .teacher-highlights p{font-size:10px;margin-top:5px;line-height:1.6}.teacher-scores{font-size:10px;padding-top:9px}.teacher-profile .teacher-top small{font-size:8px}}
@media(max-width:360px){.teacher.teacher-profile{grid-template-columns:88px 1fr}.teacher-profile .teacher-content{padding-left:12px}.teacher-highlights{gap:8px}.teacher-highlights>div+div{padding-left:8px}.teacher-profile .teacher-highlights strong{font-size:22px}.teacher-credential{font-size:11px}}
/* 王伟第二种形式：完整人物介绍，资历清单＋教学积累＋出版著作。 */
.teacher.teacher-editorial{grid-template-columns:205px minmax(0,1fr);padding:26px 0;row-gap:20px}.teacher-editorial .teacher-portrait{align-self:start;aspect-ratio:4/5;height:auto;min-height:0}.teacher-editorial .teacher-content{padding:0 0 0 30px;align-self:start}.teacher-name-line{display:flex;align-items:baseline;flex-wrap:wrap;gap:8px 16px;margin:8px 0 14px}.teacher-editorial .teacher-name-line h3{margin:0;font-size:30px}.teacher-name-line>span{font-size:12px;color:#6a82a7}.teacher-facts{padding:0;margin:0;list-style:none;display:grid;gap:9px}.teacher-facts li{display:flex;gap:10px;align-items:baseline;font-size:14px;color:#3f5473;line-height:1.6}.fact-mark{color:var(--blue);font-size:11px;flex-shrink:0}.fact-number{color:var(--logo-gold);font-weight:750}.teacher-approach{border-top:1px solid #e2eaf6;margin-top:17px;padding-top:13px}.teacher-approach h4{font-size:11px;color:#8a9db8;font-weight:500;letter-spacing:.04em}.teacher-editorial .teacher-approach p{font-size:12px;line-height:1.8;margin-top:5px;color:#6f85a5}.teacher-publications{grid-column:1/-1;display:grid;grid-template-columns:205px minmax(0,1fr);align-items:start;padding:14px 16px;border-radius:7px;background:#f0f5fe;gap:20px}.teacher-publications>div{display:flex;gap:9px;align-items:center}.publication-icon{color:var(--logo-gold);font-size:18px;line-height:1}.teacher-publications h4{font-size:12px;font-weight:650;color:#334e76}.teacher-publications ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:7px 18px}.teacher-publications li{font-size:11px;color:#657ea4;line-height:1.7}@media(max-width:600px){.teacher.teacher-editorial{grid-template-columns:102px minmax(0,1fr);row-gap:16px;padding:20px 0}.teacher-editorial .teacher-content{padding-left:15px}.teacher-name-line{gap:5px;margin:7px 0 12px}.teacher-editorial .teacher-name-line h3{font-size:25px}.teacher-name-line>span{font-size:10px}.teacher-facts{gap:7px}.teacher-facts li{font-size:11px;gap:7px;line-height:1.65}.fact-mark{font-size:9px}.teacher-approach{margin-top:12px;padding-top:10px}.teacher-editorial .teacher-approach p{font-size:10px;line-height:1.8}.teacher-publications{grid-template-columns:1fr;gap:8px;padding:12px}.teacher-publications ul{display:grid;gap:5px}.teacher-publications li{font-size:10px}.teacher-publications h4{font-size:11px}}
/* 五位主讲：小幅统一胸像、简短清单、折叠详情及两个视频入口。 */
.teacher.teacher-compact{grid-template-columns:132px minmax(0,1fr);gap:0;row-gap:10px;padding:23px 0;min-height:0}.teacher-compact .teacher-portrait{position:relative;align-self:start;aspect-ratio:4/5;height:auto;min-height:0;border-radius:7px;overflow:hidden}.teacher-compact .teacher-portrait img{position:absolute;width:var(--portrait-width);max-width:none;height:auto;object-fit:initial;transform:none;left:var(--portrait-left);top:var(--portrait-top)}.teacher-compact .teacher-content{padding:0 0 0 28px}.teacher-compact .teacher-name-line{margin:8px 0 13px}.teacher-compact .teacher-name-line h3{font-size:29px;margin:0}.teacher-compact .teacher-top .subject{font-size:10px;background:#eef4ff;padding:3px 8px;border-radius:4px}.teacher-compact .teacher-facts{gap:7px}.teacher-compact .teacher-facts li{font-size:12px}.teacher-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.teacher-video-link{display:inline-flex;align-items:center;gap:6px;border:1px solid #d8e5fa;background:#f5f9ff;padding:7px 11px;border-radius:5px;color:var(--blue);font-size:11px}.teacher-video-link small{font-size:9px;font-weight:400;color:#96a7c0;margin-left:3px}.teacher-video-link:disabled{cursor:default;background:#fafbfd;border-color:#e4eaf3;color:#8197b6}.teacher-video-link:not(:disabled):hover{background:#e6efff}.teacher-details{grid-column:2;padding-left:28px}.teacher-details summary{display:flex;align-items:center;gap:10px;width:max-content;padding:3px 0;list-style:none;font-size:10px;color:#7991b3;cursor:pointer}.teacher-details summary::-webkit-details-marker{display:none}.teacher-details summary span{color:var(--blue)}.teacher-details[open] summary{color:var(--blue)}.teacher-details[open] summary span{transform:rotate(45deg)}.teacher-details-body{margin-top:9px;padding:12px 15px;border-radius:5px;background:#f5f8fe}.teacher-details-body p{font-size:12px;color:#7186a5;line-height:1.85;white-space:pre-line}.teacher-details-body h4{font-size:11px;color:#455e83;font-weight:600;margin:12px 0 6px}.teacher-details-body ul{padding:0;margin:0;list-style:none;display:grid;gap:4px}.teacher-details-body li{font-size:11px;color:#7d91ad;line-height:1.8}body:has(#teacherVideoViewer[open]){overflow:hidden}@media(max-width:600px){.teacher.teacher-compact{grid-template-columns:94px minmax(0,1fr);padding:20px 0;row-gap:8px}.teacher-compact .teacher-content{padding-left:16px}.teacher-compact .teacher-name-line h3{font-size:25px}.teacher-compact .teacher-name-line{gap:5px;margin:7px 0 11px}.teacher-compact .teacher-name-line>span{font-size:10px}.teacher-compact .teacher-facts li{font-size:11px;gap:6px}.teacher-compact .teacher-facts{gap:6px}.teacher-actions{gap:6px;margin-top:12px}.teacher-video-link{font-size:10px;padding:6px 8px;gap:4px}.teacher-video-link small{font-size:8px;margin-left:0}.teacher-details{padding-left:16px}.teacher-details-body{padding:10px}.teacher-details-body p{font-size:11px}.teacher-details-body li{font-size:10px}}
@media(max-width:360px){.teacher.teacher-compact{grid-template-columns:78px minmax(0,1fr)}.teacher-compact .teacher-content,.teacher-details{padding-left:12px}.teacher-compact .teacher-facts li{font-size:10px}}
.teacher-poster-entry{grid-column:2;padding-left:28px}.teacher-poster-link{display:inline-flex;align-items:center;gap:9px;padding:3px 0;border:0;background:none;color:var(--blue);font-size:10px}.teacher-poster-link:hover:not(:disabled){color:#103aaf}.teacher-poster-link:disabled{color:#91a3bd;cursor:default}.teacher-poster-link small{font-size:9px;color:#9dadc4}@media(max-width:600px){.teacher-poster-entry{padding-left:16px}}@media(max-width:360px){.teacher-poster-entry{padding-left:12px}}
/* 主讲简介统一文字颜色，不对数字作橙黄色强调。 */
.teacher-facts .fact-number{color:inherit;font-weight:inherit}
.teacher-video-link.clicked{background:var(--blue);color:#fff;border-color:var(--blue)}.teacher-video-link:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
/* 所有板块标题与03年级课程统一，不再按模块单独配色。 */
#teachers h2,#courses h2,#platform h2,#refund h2,#contact h2{color:#2257b0;font-weight:750}
#teachers .section-label,#courses .section-label,#platform .section-label,#refund .section-label,#contact .section-label{color:var(--blue)}
/* 五部分课程详情：介绍完整换行，日期可按需查看。 */
.overview-grid{grid-template-columns:1.15fr 1fr;gap:26px}.editable-paragraph{white-space:pre-line;line-height:1.9;min-height:3.8em;font-size:13px}.term-card div strong{font-size:11px;white-space:nowrap}.period-note{font-size:10px;color:#8296b3;line-height:1.7;margin-top:8px}.live-date-details{margin-top:8px}.live-date-details summary{list-style:none;font-size:10px;color:var(--blue);cursor:pointer;display:flex;align-items:center;gap:7px}.live-date-details summary::-webkit-details-marker{display:none}.live-date-details p{font-size:10px;color:#7186a5;line-height:1.9;margin-top:7px}.live-date-details[open] summary span{transform:rotate(45deg)}.schedule-notice{font-size:11px;color:#8294af;line-height:1.8;margin-top:12px;max-width:750px}@media(max-width:900px){.overview-grid{grid-template-columns:1fr;gap:0}}@media(max-width:600px){.editable-paragraph{font-size:12px}.term-card div strong{font-size:10px}.schedule-notice{font-size:10px}}
/* 已确认的紧凑周期 / 同行时段 / App下载区域。 */
.detail-heading>span{color:#859ab8;font-size:17px;font-weight:400;line-height:1}.schedule-slot{display:flex;flex-wrap:wrap;align-items:baseline;gap:5px 10px}.schedule-compare .schedule-slot strong{font-size:13px;font-weight:650;color:#263d61;white-space:nowrap;font-variant-numeric:tabular-nums}.schedule-compare .schedule-slot small{display:inline;font-size:10px;font-weight:400;color:#93a2b7;white-space:nowrap}.platform-brand{display:flex;align-items:center;gap:20px;margin-bottom:24px}.platform-brand .app-logo-window{width:66px}.platform-brand h3{font-size:26px;font-weight:750;color:#17212f;line-height:1.3}.platform-brand p{max-width:690px;font-size:13px;line-height:1.9;color:#7487a5;margin-top:8px}.platform-downloads{gap:20px}.platform-downloads article{display:flex;flex-direction:column;align-items:start;background:#fff;border:1px solid #dae6f8;border-radius:9px;padding:22px 24px}.device-icon{display:grid;place-items:center;width:43px;height:43px;background:#edf4ff;color:var(--blue);border-radius:9px;margin-bottom:13px}.device-icon svg{width:27px;height:27px}.platform-downloads h3{margin-top:0;font-size:18px}.platform-downloads p{min-height:0;max-width:400px;font-size:12px;line-height:1.8;margin:9px 0 18px}.platform-downloads .download-link{margin-top:auto;background:var(--blue);color:#fff;border-color:var(--blue);padding:10px 17px;min-width:172px;justify-content:space-between}.platform-downloads .download-link:hover,.platform-downloads .download-link.clicked{background:#1241b7;border-color:#1241b7;box-shadow:0 0 0 2px #d9e6ff}@media(max-width:600px){.schedule-compare .schedule-slot strong{font-size:11px}.schedule-compare .schedule-slot small{font-size:9px}.schedule-slot{gap:3px 7px}.platform-brand{gap:14px;margin-bottom:20px}.platform-brand .app-logo-window{width:53px}.platform-brand h3{font-size:22px}.platform-brand p{font-size:11px;line-height:1.8;margin-top:6px}.platform-downloads{grid-template-columns:1fr;gap:12px}.platform-downloads article{padding:18px}.platform-downloads h3{font-size:16px}.platform-downloads p{font-size:11px;margin-bottom:15px}.platform-downloads .download-link{font-size:11px;min-width:180px}.device-icon{width:37px;height:37px;margin-bottom:10px}.device-icon svg{width:24px;height:24px}}
/* 各学期独立按周末及时间排序，不再跨学期固定学科行。 */
.schedule-compare.ordered-schedule{table-layout:fixed}.schedule-compare.ordered-schedule th:first-child{width:auto}.ordered-schedule .schedule-entry{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px}.ordered-schedule .schedule-subject{display:inline;color:#263d61;font-size:12px;font-weight:650}.ordered-schedule td{vertical-align:top;padding:12px 16px}.ordered-schedule .schedule-slot{display:flex;flex-wrap:wrap}.price-table{min-width:720px}.price-card-top b{font-size:12px}.price-card-top strong{color:var(--blue)}@media(max-width:600px){.ordered-schedule td{padding:10px 8px}.ordered-schedule .schedule-entry{gap:4px}.ordered-schedule .schedule-subject{font-size:11px;width:100%}.ordered-schedule .schedule-slot strong{font-size:10px}.ordered-schedule .schedule-slot small{font-size:9px}.extra-text p{font-size:11px}}
/* 平台及联系信息统一为完整容器，下载仅内部左右分栏。 */
.platform-unified,.contact-unified{background:#fff;border:1px solid #dce7f7;border-radius:10px;padding:28px 30px}.platform-overview{display:grid;grid-template-columns:1.1fr 1fr;gap:38px;align-items:center;padding:0 0 25px}.platform-copy .device-label{font-size:11px;color:#879dc0;letter-spacing:.05em}.platform-copy p{font-size:13px;line-height:1.9;color:#7388a8;margin-top:9px;max-width:470px}.platform-identity{display:flex;align-items:center;justify-content:center;gap:18px}.platform-identity .app-logo-window{width:67px}.platform-identity h3{font-size:26px;line-height:1.3;color:#17212f;font-weight:750;letter-spacing:-.025em}.platform-unified .platform-downloads{border-top:1px solid #e0e9f7;gap:0;margin:0;padding-top:23px}.platform-unified .platform-downloads article{border:0;border-radius:0;padding:0 28px 0 0;background:none}.platform-unified .platform-downloads article+article{border-left:1px solid #e0e9f7;padding:0 0 0 28px}.platform-unified .device-icon{width:36px;height:36px;margin-bottom:10px}.platform-unified .platform-downloads h3{font-size:17px}.platform-unified .platform-downloads p{font-size:12px;max-width:400px}.contact-layout.contact-unified{display:block}.contact-unified .advisor-contact{display:flex;align-items:center;gap:28px;padding-bottom:25px}.contact-unified .advisor-copy{max-width:650px}.contact-unified .advisor-copy h3{font-size:21px}.contact-unified .qr-pending{width:132px;min-height:132px}.contact-unified .support-guide{border-bottom:0;border-top:1px solid #e0e9f7;padding-top:24px}.support-label h3{font-size:18px;font-weight:700;color:#263d61}.support-label p{font-size:12px;color:#8296b3;margin-top:7px;line-height:1.8}.support-visible .support-details{display:grid;grid-template-columns:1fr 330px;gap:32px;align-items:center;padding-top:18px;padding-bottom:0}.support-visible .support-steps{gap:14px;margin:0}.support-visible .support-steps li{font-size:13px}.support-visible .support-single{width:100%;max-width:330px}.support-visible .support-screenshot{border-radius:7px}@media(max-width:900px){.platform-unified,.contact-unified{padding:24px}.platform-overview{gap:22px}.platform-identity{gap:13px}.platform-identity h3{font-size:23px}.support-visible .support-details{grid-template-columns:1fr 260px;gap:24px}}@media(max-width:600px){.platform-unified,.contact-unified{padding:19px 17px;border-radius:8px}.platform-overview{display:flex;flex-direction:column-reverse;align-items:stretch;gap:18px;padding-bottom:20px}.platform-identity{justify-content:flex-start;gap:14px}.platform-identity .app-logo-window{width:53px}.platform-identity h3{font-size:23px}.platform-copy p{font-size:11px;margin-top:6px;line-height:1.85}.platform-copy .device-label{font-size:10px}.platform-unified .platform-downloads{grid-template-columns:1fr;padding-top:19px;gap:20px}.platform-unified .platform-downloads article{padding:0}.platform-unified .platform-downloads article+article{border-left:0;border-top:1px solid #e0e9f7;padding:19px 0 0}.platform-unified .platform-downloads h3{font-size:16px}.platform-unified .platform-downloads p{font-size:11px;margin-bottom:14px}.contact-unified .advisor-contact{align-items:center;gap:16px;padding-bottom:20px}.contact-unified .advisor-copy h3{font-size:18px}.contact-unified .qr-pending{width:96px;min-height:115px}.contact-unified .contact-qr{width:110px;padding:8px}.contact-unified .support-guide{padding-top:20px}.support-label h3{font-size:16px}.support-label p{font-size:11px}.support-visible .support-details{grid-template-columns:1fr;gap:18px;padding-top:16px}.support-visible .support-steps{gap:10px}.support-visible .support-steps li{font-size:11px}.support-visible .support-single{max-width:300px}}
/* 咨询活码与客服截图共享右侧展示宽度及轻边框。二维码原图不裁切。 */
.contact-unified .advisor-contact{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:36px;align-items:center;padding-bottom:28px}.contact-unified .contact-qr{justify-self:stretch;display:flex;flex-direction:column;align-items:center;gap:0;width:100%;padding:20px 24px 15px;background:#fff;border:1px solid #dce7f5;border-radius:8px;box-shadow:0 4px 18px #16396706}.contact-unified .contact-qr img{width:180px;max-width:100%;height:auto;aspect-ratio:1;object-fit:contain;background:#fff}.contact-unified .contact-qr>span{font-size:11px;color:#526d94;font-weight:600;margin-top:13px}.contact-unified .contact-qr>small{display:block;font-size:9px;color:#95a6bd;margin-top:5px}.contact-unified .contact-qr:hover{border-color:#aac5ed;box-shadow:0 6px 20px #1b4b8e0b}.contact-unified .advisor-copy .device-label{color:#8da0bc}.contact-unified .advisor-copy small{max-width:440px;line-height:1.8}.contact-unified .support-details{grid-template-columns:minmax(0,1fr) 280px;gap:36px}.contact-unified .support-single{max-width:none}.contact-unified .support-screenshot{border:1px solid #dce7f5;border-radius:8px;box-shadow:0 4px 18px #16396706}.contact-unified .support-single figcaption{font-size:10px;color:#7f93af;margin-top:10px}@media(max-width:600px){.contact-unified .advisor-contact{grid-template-columns:1fr;gap:18px;padding-bottom:24px}.contact-unified .contact-qr{justify-self:center;width:min(100%,260px);padding:17px 20px 14px}.contact-unified .contact-qr img{width:174px}.contact-unified .support-details{grid-template-columns:1fr;gap:19px}.contact-unified .support-single{justify-self:center;width:min(100%,260px)}.contact-unified .advisor-copy h3{font-size:19px}.contact-unified .contact-qr>span{font-size:10px}}
/* 真实界面配图，电脑账号栏在缩略图与放大图中始终位于裁切窗口外。 */
.platform-screen-preview{width:100%;padding:0;margin:0 0 18px;border:0;background:none;text-align:left;border-radius:7px;color:#8198bb}.platform-device-stage{height:225px;display:flex;align-items:center;justify-content:center;padding:16px 13px;background:linear-gradient(145deg,#f4f7fe,#edf3fc);border-radius:7px;overflow:hidden}.platform-screen-preview>span{display:flex;justify-content:space-between;gap:10px;font-size:9px;margin:8px 1px 0}.platform-screen-preview>span b{font-size:9px;font-weight:400;color:#7b98c2}.desktop-device{width:100%;max-width:410px}.desktop-display{position:relative;aspect-ratio:2858/1446;border:5px solid #d6e0ef;border-radius:6px;overflow:hidden;background:#f5f7ff}.desktop-display img{position:absolute;display:block;max-width:none;width:100%;height:auto;left:0;top:-8.299%}.desktop-device-base{height:6px;border-radius:1px 1px 8px 8px;background:#c3d0e4;margin:0 -5px}.mobile-device{width:94px;border:4px solid #d1dced;border-radius:13px;overflow:hidden;background:#fff;box-shadow:0 5px 15px #31588613;flex-shrink:0}.mobile-display{position:relative;aspect-ratio:1080/2260;overflow:hidden}.mobile-display img{position:absolute;display:block;width:100%;max-width:none;height:auto;left:0;top:-5.31%}.platform-screen-preview:hover .platform-device-stage{background:linear-gradient(145deg,#edf3fd,#e6effb)}.platform-preview-viewer{padding:0;border:0;border-radius:10px;width:min(1100px,95vw);max-width:95vw;max-height:94svh;background:#f5f8fe;overflow:auto}.platform-preview-viewer::backdrop{background:#0c203fd9;backdrop-filter:blur(4px)}.platform-preview-viewer .viewer-toolbar>button{border-radius:4px;padding:8px 12px;background:#eaf1ff;color:var(--blue);font-size:11px}.platform-preview-body{display:flex;justify-content:center;padding:20px}.platform-preview-body.desktop .desktop-device{max-width:none}.platform-preview-body.mobile .mobile-device{width:min(330px,calc(75svh * .478));border-width:6px;border-radius:18px}.platform-preview-body.mobile{padding:14px}body:has(.platform-preview-viewer[open]){overflow:hidden}@media(max-width:900px){.platform-device-stage{height:200px;padding:13px 8px}.mobile-device{width:85px}.desktop-display{border-width:4px}}@media(max-width:600px){.platform-device-stage{height:210px;padding:15px}.mobile-device{width:90px}.platform-screen-preview{margin-bottom:16px}.desktop-device{max-width:340px}.platform-preview-body{padding:12px}.platform-preview-body.desktop .desktop-display{border-width:3px}.platform-preview-body.mobile .mobile-device{width:min(330px,calc(74svh * .478))}.platform-preview-viewer .viewer-toolbar{padding:10px}.platform-preview-viewer .viewer-toolbar strong{max-width:none}}
/* 手机界面旁加入截图中已有功能说明，利用横向留白。 */
.platform-device-stage.mobile-feature-stage{justify-content:center;gap:28px;padding:16px 20px}.mobile-feature-list{display:grid;gap:22px;text-align:left}.mobile-feature-list>div{display:flex;align-items:center;gap:10px}.mobile-feature-list span{font-size:10px;font-weight:650;color:var(--blue);font-variant-numeric:tabular-nums}.mobile-feature-list b{font-size:12px;font-weight:600;color:#3b5579;line-height:1.6}.platform-screen-preview:hover .mobile-feature-list b{color:#274a7d}@media(max-width:900px){.platform-device-stage.mobile-feature-stage{gap:16px;padding:14px 10px}.mobile-feature-list{gap:19px}.mobile-feature-list>div{gap:7px}.mobile-feature-list b{font-size:11px}}@media(max-width:600px){.platform-device-stage.mobile-feature-stage{gap:28px;padding:15px}.mobile-feature-list{gap:22px}.mobile-feature-list b{font-size:11px}}@media(max-width:360px){.platform-device-stage.mobile-feature-stage{gap:16px;padding:12px 8px}.mobile-feature-list b{font-size:10px}.mobile-feature-list>div{gap:6px}}
.brand-title-dot{font-weight:900;font-size:1.05em;display:inline-block;padding:0 2px;vertical-align:baseline}.brand-overview{grid-template-columns:.9fr 1.1fr;gap:36px}.brand-overview .advantages{min-width:0;overflow-x:auto}.brand-overview .adv{grid-template-columns:20px 90px 1fr;gap:8px;min-width:max-content}.brand-overview .adv b,.brand-overview .adv p{white-space:nowrap}.brand-overview .adv b{font-size:12px}.brand-overview .adv p{font-size:11px}@media(max-width:600px){.brand-overview{grid-template-columns:1fr;gap:20px}.brand-overview .adv{grid-template-columns:18px 73px 1fr;gap:7px}.brand-overview .adv b{font-size:11px}.brand-overview .adv p{font-size:10px}}
/* 家长入口：纯年级选择，无个人信息表单。 */
[hidden]{display:none!important}.grade-welcome{min-height:100svh;display:flex;align-items:center;justify-content:center;padding:40px 24px;background:radial-gradient(ellipse at 90% 10%,#d7eeff,transparent 48%),linear-gradient(125deg,#f7faff,#e9f1ff)}.welcome-inner{width:100%;max-width:790px;text-align:center}.welcome-logo{width:185px;height:auto;margin-bottom:38px}.welcome-eyebrow{font-size:10px;font-weight:650;letter-spacing:.19em;color:var(--blue);margin-bottom:20px}.welcome-inner h1{font-size:46px;line-height:1.3;font-weight:750;letter-spacing:-.03em;color:#16283f;margin:0}.welcome-inner h1 span{color:var(--blue)}.welcome-inner>p{font-size:14px;color:#7a8fae;margin:25px 0 29px}.welcome-grades{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.welcome-grades button{display:flex;align-items:center;justify-content:space-between;border:1px solid #d5e3fa;background:#ffffffdf;padding:25px 29px;border-radius:11px;color:#223d66;font-size:24px;font-weight:700;box-shadow:0 6px 18px #1b4a8f05;transition:background .16s,color .16s,transform .16s}.welcome-grades button span{font-size:18px;color:#9fb4d5;font-weight:400}.welcome-grades button:hover,.welcome-grades button:active{background:var(--blue);color:white;border-color:var(--blue);transform:translateY(-2px)}.welcome-grades button:hover span,.welcome-grades button:active span{color:#cbdcff}.change-grade{white-space:nowrap;color:var(--blue);font-size:11px;font-weight:600;background:#edf3ff;border-radius:5px;padding:7px 10px;margin-left:auto}.head nav{margin-left:8px}.support-only .support-guide{border:0;padding-top:0}.support-only .support-details{padding-top:20px}.support-only .support-label h3{font-size:19px}@media(max-width:900px){.change-grade{margin-left:auto}.head nav{margin-left:0}.welcome-inner h1{font-size:40px}}@media(max-width:600px){.grade-welcome{padding:32px 24px}.welcome-inner{max-width:370px}.welcome-logo{width:160px;margin-bottom:30px}.welcome-eyebrow{font-size:9px;margin-bottom:17px}.welcome-inner h1{font-size:31px;line-height:1.3}.welcome-inner>p{font-size:12px;margin:22px 0}.welcome-grades{grid-template-columns:1fr;gap:12px}.welcome-grades button{font-size:21px;padding:19px 22px;border-radius:9px}.change-grade{font-size:10px;padding:6px 9px}.support-only .support-label h3{font-size:17px}}
/* 上线前手机适配检查：内边距、阅读字号、手指点击区域。 */
@media(max-width:600px){
 .container.head{padding:8px 18px 4px;min-height:106px;gap:3px}.head nav{gap:2px;padding:0;line-height:20px}.head nav a{padding:12px 6px;font-size:11px;line-height:20px}.head nav a.active:after{left:6px;right:6px;bottom:5px}.change-grade{min-height:40px;font-size:11px;padding:10px}.head img{height:40px}.hero>.container{min-height:calc(100svh - 106px)}html{scroll-padding-top:124px}
 .hero p,.brand-story p,.editable-paragraph{font-size:12px}.brand-overview .adv p{font-size:11px}.teacher-compact .teacher-facts li{font-size:12px;line-height:1.7}.teacher-actions{gap:8px}.teacher-video-link{min-height:42px;font-size:11px;padding:10px 8px}.teacher-poster-link{min-height:42px;font-size:11px}.switch-subjects button{min-height:42px;font-size:12px;padding:9px 15px}.compare-nav button{min-height:38px;min-width:38px}.refund-tabs button{min-height:42px;font-size:13px;padding:10px 18px}.text-action{min-height:42px;font-size:11px}.viewer-toolbar button,.environment-viewer .viewer-toolbar>button,.platform-preview-viewer .viewer-toolbar>button{min-height:40px;padding:9px 10px;font-size:11px}.platform-copy p,.platform-unified .platform-downloads p{font-size:12px}.contact-unified .support-steps li{font-size:12px}.schedule-compare .schedule-slot strong{font-size:11px}.environment-entry{min-height:40px}.brand-overview .advantages{scrollbar-width:thin}
}
@media(max-width:360px){.container.head{padding-left:16px;padding-right:16px}.teacher-compact .teacher-facts li{font-size:11px}.teacher-video-link{font-size:10px}.head nav a{font-size:11px}}
/* 窄屏不截断品牌优势说明；电脑保持原有单行列式。 */
@media(max-width:600px){.brand-overview .advantages{overflow:visible;gap:12px}.brand-overview .adv{grid-template-columns:18px minmax(0,1fr);gap:3px 8px;min-width:0}.brand-overview .adv>span{grid-row:span 2;align-self:start;padding-top:2px}.brand-overview .adv b{font-size:12px}.brand-overview .adv p{white-space:normal;font-size:11px;line-height:1.7}.brand-overview .adv p,.brand-story p{overflow-wrap:break-word}}
/* 手机首屏品牌图形作为背景，不额外占用一行空间。 */
@media(max-width:600px){.hero-layout{position:relative}.hero-layout>div:first-child{position:relative;z-index:1}.hero .hero-emblem{position:absolute;right:4px;top:92px;opacity:.1;pointer-events:none;z-index:0}}

/* 联报产品整体介绍与顺序阅读。 */
.hero-visual{display:flex;flex-direction:column;align-items:center;gap:24px;min-width:0}.hero-visual .environment-entry{align-self:center;margin:0}.product-introduction{max-width:960px;min-height:0;white-space:normal;font-size:14px;line-height:1.9}.product-total{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 18px;margin-top:20px}.product-total strong{font-size:17px;color:var(--blue)}.product-total span{font-size:13px;color:#456183}.product-breakdown{margin-top:8px;font-size:12px;line-height:1.9;color:#61728d}.video-availability{font-size:11px;color:#8797af;margin-top:5px}.term-card div{flex-direction:row;align-items:baseline;gap:12px;margin-bottom:8px}.term-card div span{font-size:11px;flex-shrink:0}.term-card div strong{font-size:14px;font-weight:650;color:#334e78}.term-grid{gap:20px}.term-card>b{margin-bottom:12px}
@media(max-width:600px){.hero-visual{display:contents}.hero-visual .environment-entry{margin-top:24px;align-self:flex-start;position:relative;z-index:1}.product-introduction{font-size:12px}.product-total{margin-top:16px;gap:5px 12px}.product-total strong{font-size:15px}.product-total span{font-size:12px}.term-grid{grid-template-columns:1fr;gap:18px}.term-card div strong{font-size:13px}.term-card div{gap:12px}.product-breakdown{font-size:12px}}

/* 图形下方留出呼吸空间，课程介绍作为连续段落自然换行。 */
@media(min-width:601px){.hero-visual{gap:46px}}
.product-introduction{max-width:none}

/* 原始聊天截图反馈墙：保留头像及原文，直接展示图片。 */
.feedback-section{background:linear-gradient(180deg,#f7faff,#edf4ff)}.feedback-wall{columns:3;column-gap:18px;margin-top:28px}.feedback-photo{position:relative;break-inside:avoid;display:block;width:100%;padding:0;margin:0 0 18px;background:#edf0f4;border:5px solid #fff;border-radius:12px;overflow:hidden;box-shadow:0 5px 20px #294e7a0d;transition:box-shadow .2s,transform .2s}.feedback-photo:hover{box-shadow:0 9px 24px #294e7a26;transform:translateY(-2px)}.feedback-photo[hidden]{display:none}.feedback-photo img{display:block;width:100%;height:auto}.feedback-photo>span{position:absolute;right:7px;bottom:7px;background:#ffffffed;color:#1854e8;border-radius:50%;width:25px;height:25px;display:grid;place-items:center;font-size:13px}.feedback-more{display:block;margin:20px auto 0;padding:12px 24px;background:#fff;border:1px solid #c7d9f5;border-radius:7px;color:#1854e8;font-size:13px}.feedback-more[hidden]{display:none}.feedback-footnote{font-size:11px;line-height:1.8;color:#8395ac;text-align:center;margin-top:20px}.feedback-photo-viewer{width:min(920px,94vw);max-height:92dvh;border:0;border-radius:12px;padding:0;background:#f2f5f9}.feedback-photo-viewer::backdrop{background:#101c36b8}.feedback-viewer-bar{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#fff;color:#617795;font-size:13px}.feedback-viewer-bar>div{display:flex;gap:8px}.feedback-viewer-bar button{padding:9px 13px;min-height:42px;background:#eef4ff;border-radius:5px;color:#1854e8}.feedback-viewer-canvas{max-height:calc(92dvh - 68px);overflow:auto;padding:18px;overscroll-behavior:contain}.feedback-viewer-canvas img{display:block;max-width:100%;width:auto;height:auto;margin:auto;min-width:min(100%,500px)}body:has(.feedback-photo-viewer[open]){overflow:hidden}@media(max-width:900px){.feedback-wall{columns:2}}@media(max-width:600px){.feedback-wall{column-gap:10px;margin-top:22px}.feedback-photo{border-width:3px;border-radius:8px;margin-bottom:10px}.feedback-viewer-canvas{padding:8px}.feedback-photo>span{width:21px;height:21px;font-size:11px}}

/* 按行等高排布：保持完整图片比例，每行上下边缘对齐。 */
.feedback-wall{columns:auto;display:flex;flex-direction:column;gap:16px}.feedback-photo-row{display:flex;align-items:stretch;gap:16px;width:100%}.feedback-photo-row .feedback-photo{width:0;min-width:0;margin:0;display:flex;align-items:center;border-width:4px}.feedback-photo-row .feedback-photo img{width:100%;height:auto;min-width:0;object-fit:contain}.feedback-photo-row .feedback-photo:hover{transform:none}@media(max-width:900px){.feedback-wall{columns:auto}}@media(max-width:600px){.feedback-wall,.feedback-photo-row{gap:10px}.feedback-photo-row .feedback-photo{border-width:3px}}

/* 浅色留言展板：纹理、纸边与胶带形成层次，原图正向呈现。 */
.feedback-section{background:#fff}.feedback-board{position:relative;margin-top:30px;padding:28px 30px 30px;border:1px solid #dce6ef;border-radius:20px;background-color:#edf2f5;background-image:radial-gradient(#9db2c12b .8px,transparent .8px),linear-gradient(130deg,#f4f7f9aa,#e7eff5aa);background-size:12px 12px,100% 100%;box-shadow:inset 0 0 0 7px #ffffff6b,0 12px 35px #263e5a08}.feedback-board-heading{display:flex;align-items:center;justify-content:space-between;padding:0 2px 21px;color:#688197;font-size:12px;letter-spacing:.12em}.feedback-board-heading small{font-size:9px;letter-spacing:.2em;color:#93a6b7}.feedback-board .feedback-wall{margin-top:0;gap:25px}.feedback-board .feedback-photo-row{gap:22px}.feedback-board .feedback-photo{border:7px solid white;border-bottom-width:13px;border-radius:3px;overflow:visible;background:white;box-shadow:0 4px 9px #344e6712,0 13px 21px #344e670c}.feedback-board .feedback-photo:before{content:'';position:absolute;z-index:2;top:-15px;left:36%;width:28%;height:20px;transform:rotate(-4deg);background:#c9d9e6ab;box-shadow:0 1px 2px #48678209;pointer-events:none}.feedback-board .feedback-photo:nth-child(2):before{background:#eee0b5b0;transform:rotate(3deg)}.feedback-board .feedback-photo:nth-child(3):before{background:#c9dcd5ab;transform:rotate(-2deg)}.feedback-board .feedback-photo>span{width:24px;height:24px;right:5px;bottom:5px;background:#fffffff2;box-shadow:0 1px 5px #244b7917}.feedback-board .feedback-more{margin-top:27px;background:#ffffffd9;border-color:#cad8e5;color:#486d96;border-radius:30px;padding:10px 26px}.feedback-board .feedback-photo:hover{box-shadow:0 8px 24px #344e6726}@media(max-width:600px){.feedback-board{margin-top:24px;padding:20px 12px 22px;border-radius:13px;box-shadow:inset 0 0 0 4px #ffffff6b}.feedback-board-heading{font-size:10px;letter-spacing:.08em;padding:0 2px 18px}.feedback-board-heading small{font-size:7px;letter-spacing:.1em}.feedback-board .feedback-wall{gap:20px}.feedback-board .feedback-photo-row{gap:11px}.feedback-board .feedback-photo{border-width:4px;border-bottom-width:8px}.feedback-board .feedback-photo:before{height:13px;top:-9px;width:34%;left:33%}.feedback-board .feedback-photo>span{width:20px;height:20px;right:2px;bottom:2px}.feedback-board .feedback-more{font-size:12px}}

/* 精选完整呈现，补充反馈在独立相册查看；恢复白/浅蓝节奏。 */
#feedback{background:#f1f6ff}#platform,#contact{background:#fff}#refund{background:#f1f6ff}.feedback-board{background-color:#e9eff5;border-color:#d4e0ed;background-image:radial-gradient(#91a8bb30 .8px,transparent .8px),linear-gradient(130deg,#eff4f7aa,#e4edf5aa)}.feedback-album{width:min(1080px,94vw);max-height:92dvh;border:0;padding:0;border-radius:12px;background:#eff4fa}.feedback-album::backdrop{background:#101c36b8}.feedback-album>.feedback-viewer-bar{position:sticky;top:0;z-index:2}.feedback-album-body{padding:22px;columns:3;column-gap:16px;max-height:calc(92dvh - 68px);overflow:auto;overscroll-behavior:contain}.feedback-album-photo{position:relative;display:block;break-inside:avoid;width:100%;padding:4px;margin:0 0 16px;background:white;border-radius:7px;overflow:hidden}.feedback-album-photo img{width:100%;height:auto;display:block}.feedback-album-photo span{position:absolute;bottom:8px;right:8px;background:#fffffff0;color:#1854e8;border-radius:50%;width:24px;height:24px;display:grid;place-items:center}body:has(.feedback-album[open]){overflow:hidden}@media(max-width:600px){.feedback-album-body{padding:12px;columns:2;column-gap:10px}.feedback-album-photo{margin-bottom:10px}.feedback-album .feedback-viewer-bar{padding:10px 12px}}

.change-grade[hidden]{display:none!important}

#viewerImage[hidden]{display:none!important}#viewerLoadStatus{padding:44px 18px;color:#657e9f;font-size:14px;text-align:center}#viewerLoadStatus[hidden]{display:none}