:root{--h5-ink:#181915;--h5-paper:#f6f1e6;--h5-red:#a83b2f;--h5-green:#193e34;--h5-gold:#d7a545;--h5-line:rgba(24,25,21,.14)}
.h5-body{padding-bottom:94px;background:radial-gradient(circle at 12% 0,rgba(184,113,47,.14),transparent 27%),repeating-linear-gradient(3deg,rgba(70,54,30,.025) 0 1px,transparent 1px 8px),var(--h5-paper);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif}
.h5-header{position:sticky;top:0;z-index:40;display:flex;align-items:center;justify-content:space-between;min-height:72px;padding:10px max(16px,env(safe-area-inset-left));border-bottom:1px solid var(--h5-line);background:rgba(247,243,234,.91);backdrop-filter:blur(18px)}
.h5-brand{display:flex;align-items:center;gap:10px;color:var(--h5-ink);text-decoration:none}.h5-brand img{width:42px;height:42px;border-radius:12px}.h5-brand span{display:grid}.h5-brand strong{font:700 23px/1 Times New Roman,serif}.h5-brand small{margin-top:3px;font:14px/1.1 "Songti SC",SimSun,serif;letter-spacing:.18em}
.h5-header-actions,.h5-language{display:flex;align-items:center}.h5-header-actions{gap:10px}.h5-language{padding:3px;border:1px solid var(--h5-line);border-radius:999px;background:rgba(255,255,255,.55)}.h5-language button{min-width:40px;height:32px;padding:0 8px;border:0;border-radius:999px;color:#6f6c64;background:transparent;font-weight:800}.h5-language button.active{color:#fff;background:var(--h5-ink)}.h5-avatar{display:grid;width:39px;height:39px;place-items:center;border-radius:50%;color:#fff;background:var(--h5-red);font-weight:900;text-decoration:none}
.h5-main{width:min(100% - 28px,760px);margin:0 auto;padding:38px 0 54px}.h5-welcome{padding:4px 2px 26px}.h5-eyebrow{margin:0 0 12px;color:var(--h5-red);font-size:12px;font-weight:900;letter-spacing:.16em}.h5-welcome h1{margin:0;font:700 clamp(46px,13vw,74px)/.9 Times New Roman,"Songti SC",serif;letter-spacing:-.055em}.h5-welcome h1 span,.h5-welcome h1 em{display:block}.h5-welcome h1 em{margin-top:8px;color:var(--h5-red);font-weight:700}.h5-welcome>p:last-child{max-width:620px;margin:24px 0 0;color:#69685f;font-size:18px;line-height:1.55}
.h5-create-card{overflow:hidden;border:1px solid var(--h5-line);border-radius:28px;background:rgba(255,253,248,.94);box-shadow:0 24px 70px rgba(38,31,20,.13)}.h5-source-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--h5-line)}.h5-source-tabs button{display:grid;min-height:82px;place-items:center;align-content:center;gap:6px;padding:10px 4px;border:0;color:#777269;background:#f4efe6;cursor:pointer}.h5-source-tabs button span{font-size:20px}.h5-source-tabs button strong{font-size:13px}.h5-source-tabs button.active{color:#fff;background:var(--h5-green)}
.h5-create-card form{padding:20px}.h5-source-panel{animation:h5-in .22s ease}@keyframes h5-in{from{opacity:0;transform:translateY(5px)}}.h5-upload{position:relative;display:grid;min-height:220px;place-items:center;align-content:center;gap:7px;padding:20px;overflow:hidden;border:1.5px dashed rgba(25,62,52,.36);border-radius:20px;color:var(--h5-green);background:rgba(25,62,52,.045);text-align:center;cursor:pointer}.h5-upload-icon{display:grid;width:44px;height:44px;place-items:center;border-radius:50%;color:#fff;background:var(--h5-green);font-size:24px}.h5-upload strong{font:700 24px Times New Roman,"Songti SC",serif}.h5-upload small{color:#777269;font-size:13px;line-height:1.4}.h5-upload img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.h5-upload.has-image:after{content:"Change";position:absolute;right:12px;bottom:12px;padding:8px 11px;border-radius:999px;color:#fff;background:rgba(0,0,0,.68);font-size:12px;font-weight:800}
.h5-field{display:grid;gap:8px;margin-top:18px;color:var(--h5-ink);font-weight:800}.h5-field textarea,.h5-create-options select{border:1px solid rgba(24,25,21,.18);border-radius:15px;background:#fff}.h5-field textarea{min-height:92px}.h5-field small{color:#777269;font-weight:400}.h5-voice-field{position:relative}.h5-voice-field textarea{padding-right:88px}.h5-voice-field button{position:absolute;right:10px;bottom:10px;display:grid;min-width:66px;height:54px;place-items:center;border:0;border-radius:14px;color:#fff;background:var(--h5-red);font-size:11px}.h5-voice-field button.listening{animation:h5-pulse 1s infinite}@keyframes h5-pulse{50%{opacity:.55}}
.h5-question{font:700 25px/1.2 Times New Roman,"Songti SC",serif}.h5-inspiration-chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:5px}.h5-inspiration-chips button{flex:0 0 auto;min-height:42px;padding:0 15px;border:1px solid var(--h5-line);border-radius:999px;background:#fff;font-weight:800}.h5-inspiration-chips button.active{color:#fff;background:var(--h5-red)}
.h5-create-options{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px;padding-top:18px;border-top:1px solid var(--h5-line)}.h5-create-options label{font-size:13px}.h5-create-options select{min-height:48px;padding:0 12px}.h5-guardian-check{display:flex;grid-column:auto;align-items:flex-start;gap:9px;margin:14px 0;padding:12px;border-radius:13px;background:#f0e2c8;font-size:14px;line-height:1.4}.h5-guardian-check input{width:20px;height:20px;margin:0}.h5-form-message{min-height:18px;margin:12px 2px 0;color:#9b2f25;font-size:13px}.h5-start-button{display:flex;width:100%;min-height:60px;align-items:center;justify-content:space-between;padding:0 20px;border:0;border-radius:18px;color:#fff;background:var(--h5-red);font-weight:900;cursor:pointer}.h5-start-button b{font-size:25px}.h5-start-button:disabled{opacity:.55}.h5-trust-row{display:flex;justify-content:center;gap:9px;flex-wrap:wrap;margin-top:13px;color:#777269;font-size:11px;font-weight:700}.h5-trust-row span+span:before{content:"·";margin-right:9px}
.h5-squad-link{display:block;margin:17px auto 0;color:var(--h5-green);font-size:13px;font-weight:900;text-align:center;text-decoration:none}
.h5-recent{margin-top:48px}.h5-recent>header{display:flex;align-items:end;justify-content:space-between;gap:16px}.h5-recent h2,.h5-teacher-card h2{margin:0;font:700 34px/1 Times New Roman,"Songti SC",serif}.h5-recent header>a{padding-bottom:3px;color:var(--h5-red);font-weight:800;text-decoration:none}.h5-project-list{display:grid;grid-auto-flow:column;grid-auto-columns:min(84vw,310px);gap:13px;overflow-x:auto;margin-top:18px;padding:0 1px 12px;scroll-snap-type:x mandatory}.h5-project{display:grid;grid-template-columns:82px 1fr;gap:13px;min-height:128px;padding:13px;border:1px solid var(--h5-line);border-radius:20px;background:rgba(255,253,248,.9);scroll-snap-align:start}.h5-project-cover{overflow:hidden;border-radius:13px;background:linear-gradient(145deg,#162b3c,#735245)}.h5-project-cover img{width:100%;height:100%;object-fit:cover}.h5-project-copy{min-width:0}.h5-project-copy h3{margin:3px 0 7px;overflow:hidden;font:700 22px/1.05 Times New Roman,"Songti SC",serif;text-overflow:ellipsis;white-space:nowrap}.h5-project-copy p{display:-webkit-box;margin:0;color:#777269;overflow:hidden;font-size:13px;line-height:1.4;-webkit-box-orient:vertical;-webkit-line-clamp:2}.h5-project-copy a{display:inline-block;margin-top:10px;color:var(--h5-red);font-size:13px;font-weight:900;text-decoration:none}.h5-empty{display:grid;gap:7px;margin-top:18px;padding:25px;border:1px dashed var(--h5-line);border-radius:20px;color:#777269;text-align:center}.h5-empty strong{color:var(--h5-ink);font:700 24px Times New Roman,"Songti SC",serif}
.h5-teacher-card{display:grid;grid-template-columns:1fr 120px;gap:18px;margin-top:46px;padding:22px;overflow:hidden;border-radius:26px;color:#fff;background:var(--h5-green)}.h5-teacher-card .h5-eyebrow{color:#f2c963}.h5-teacher-card p:not(.h5-eyebrow){margin:13px 0;color:rgba(255,255,255,.72);font-size:14px;line-height:1.5}.h5-teacher-card a{color:#fff;font-weight:900}.h5-teacher-card img{width:100%;height:100%;min-height:190px;border-radius:12px;object-fit:cover;transform:rotate(2deg);box-shadow:0 12px 28px rgba(0,0,0,.27)}
.h5-bottom-nav{position:fixed;z-index:50;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(4,1fr);padding:7px max(8px,env(safe-area-inset-right)) max(7px,env(safe-area-inset-bottom));border-top:1px solid var(--h5-line);background:rgba(255,253,248,.95);backdrop-filter:blur(18px)}.h5-bottom-nav a{display:grid;min-height:59px;place-items:center;align-content:center;gap:3px;color:#777269;text-decoration:none}.h5-bottom-nav span{font-size:20px;line-height:1}.h5-bottom-nav strong{font-size:11px}.h5-bottom-nav a.active{color:var(--h5-red)}
.archive-page{padding-bottom:88px}
.usage-overview{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin:18px 0}.usage-overview>span{display:grid;gap:7px;padding:13px;border:1px solid rgba(25,62,52,.13);border-radius:15px;background:rgba(25,62,52,.045)}.usage-overview small{color:#6d756f;font-size:9px;font-weight:900;letter-spacing:.09em}.usage-overview strong{color:var(--h5-green);font-size:15px;overflow-wrap:anywhere}.allowance-meter{display:block;width:100%;height:6px;overflow:hidden;border-radius:999px;background:#e5e9e6}.allowance-meter b{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#1d7051,#54a678)}.usage-details{margin-top:16px;padding-top:15px;border-top:1px solid var(--h5-line)}.usage-details summary{color:var(--h5-green);font-size:13px;font-weight:900;cursor:pointer}.usage-history,.purchase-history>div{display:grid;margin-top:12px}.purchase-history{margin-top:20px}.purchase-history h4{margin:0;color:var(--h5-ink)}.usage-row{display:grid;gap:4px;padding:11px 0;border-bottom:1px solid var(--h5-line)}.usage-row strong{font-size:13px}.usage-row span{color:#74776f;font-size:12px}.usage-plus{color:#16704d}.usage-minus{color:#82552f}
.free-gift-card{margin:18px 0;padding:18px;border:1px solid rgba(29,112,81,.22);border-radius:20px;background:linear-gradient(145deg,#f1f8f3,#fffaf0)}.free-gift-card h4{margin:5px 0 13px;font-size:17px}.gift-steps{display:grid;gap:9px}.gift-steps>div{display:grid;grid-template-columns:28px 1fr;gap:8px;align-items:start;padding:10px;border-radius:13px;background:rgba(255,255,255,.75)}.gift-steps b{color:var(--h5-green);font-size:16px}.gift-steps span{font-size:13px;line-height:1.45}.gift-share{display:grid;gap:9px;margin-top:13px}.gift-share label{display:grid;gap:6px;font-size:12px;font-weight:800}.gift-share input{width:100%;padding:10px;border:1px solid var(--h5-line);border-radius:11px;background:#fff}.gift-share small{color:#68736c}
@media(min-width:760px){.h5-body{padding-bottom:30px}.h5-header{padding-inline:clamp(24px,5vw,70px)}.h5-main{padding-top:62px}.h5-bottom-nav{left:50%;right:auto;bottom:18px;width:430px;transform:translateX(-50%);border:1px solid var(--h5-line);border-radius:23px;box-shadow:0 16px 50px rgba(28,24,18,.15)}.h5-project-list{grid-auto-columns:330px}}
@media(max-width:460px){.h5-language button{min-width:34px;padding:0 5px}.h5-avatar{display:none}.h5-create-options{grid-template-columns:1fr}.h5-teacher-card{grid-template-columns:1fr 92px}.h5-teacher-card img{min-height:160px}.h5-create-card form{padding:16px}.h5-welcome>p:last-child{font-size:16px}.usage-overview{grid-template-columns:1fr 1fr}.usage-overview>span:last-child{grid-column:1/-1}}
.mentor-grammar-changes {
  display: grid;
  gap: 0.55rem;
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
}

.mentor-grammar-changes li {
  display: grid;
  gap: 0.2rem;
  padding: 0.7rem 0.8rem;
  border-radius: 0.8rem;
  background: rgba(20, 111, 79, 0.08);
}

.mentor-grammar-changes strong,
.mentor-grammar-changes span { display: block; }