:root{font:16px/1.6 Arial,Helvetica,sans-serif;color:#122e4a;background:#fffaf2}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0}
.scroll-progress{position:fixed;z-index:30;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,#ff8069,#ffd269,#55bdd0);transform:scaleX(0);transform-origin:left center;pointer-events:none}
a{color:inherit}
button{font:inherit;cursor:pointer}
.shell{width:min(1160px,calc(100% - 44px));margin:auto}
.header{background:#102d50;color:#fff}
.nav{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.nav img{display:block;width:150px;height:auto}
.nav-links{display:flex;align-items:center;gap:24px}
.nav-links a{font-weight:700;font-size:.9rem;text-decoration:none;color:#e7f3ff}
.nav-links a:hover{text-decoration:underline}
.nav-links .nav-test{border:1px solid #a0bdd3;padding:9px 14px;border-radius:999px}
.hero{position:relative;overflow:hidden;background:#fff7e9;border-bottom:1px solid #f6e8d5}
.hero:before{content:"";position:absolute;width:520px;height:520px;background:#ffe3bd;border-radius:50%;right:-200px;top:-275px}
.hero:after{content:"";position:absolute;width:210px;height:210px;background:#d8f4f1;border-radius:50%;right:30%;bottom:-145px}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:54px;align-items:center;padding:76px 0 86px}
.hero-spark{position:absolute;z-index:2;pointer-events:none;line-height:1;color:#f3ba54;text-shadow:0 8px 20px rgba(243,186,84,.3)}
.hero-spark-one{top:38px;right:40%;font-size:2.5rem}
.hero-spark-two{bottom:43px;right:2%;font-size:1.45rem;color:#ef8f7b}
.eyebrow{font-size:.78rem;font-weight:800;letter-spacing:.14em;color:#1b7181;margin:0 0 12px;text-transform:uppercase}
.hero .eyebrow{display:inline-flex;align-items:center;gap:10px;color:#b45443;background:#ffe8df;border-radius:999px;padding:8px 13px}
.hero .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:#ff755d}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{line-height:1.18;letter-spacing:-.04em}
h1{font-size:clamp(2.7rem,5.4vw,5rem);margin:19px 0 22px;max-width:710px}
h1 em{font-style:normal;color:#e66651}
.hero-lead{font-size:1.07rem;color:#4a6377;max-width:610px;margin-bottom:0}
.hero-actions{display:flex;gap:11px;flex-wrap:wrap;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border-radius:11px;padding:13px 18px;text-decoration:none;font-weight:800;border:1px solid transparent;transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(16,45,80,.13)}
.btn:active{transform:translateY(0);box-shadow:none}
.btn-navy{background:#102d50;color:#fff}
.btn-navy:hover{background:#204365}
.btn-white{background:#fff;color:#173b56;border-color:#cddde7}
.btn-white:hover{border-color:#5d92a5}
.btn-coral{background:#ff765f;color:#142d45}
.btn-coral:hover{background:#ff927e}
.hero-note{margin:18px 0 0;font-size:.86rem;color:#647b8e}
.paper{position:relative;transform:rotate(1deg);background:#fff;box-shadow:0 18px 0 -10px #d5edf1,0 25px 45px rgba(24,61,77,.12);border:1px solid #e7e5dd;border-radius:18px;padding:28px 30px}
.paper:before{content:"";position:absolute;width:76px;height:25px;background:#ffd269;top:-13px;left:calc(50% - 38px);transform:rotate(-3deg);opacity:.92;border-radius:3px}
.paper-top{display:flex;justify-content:space-between;gap:12px;align-items:center;border-bottom:1px dashed #bfd2da;padding-bottom:16px}
.paper-top span{color:#277587;font-size:.75rem;font-weight:800;letter-spacing:.14em}
.paper-top b{background:#e1f3ed;color:#246e5b;border-radius:50%;padding:5px 11px;font-size:.76rem}
.paper h2{font-size:1.6rem;margin:18px 0 8px}
.paper>p{color:#587084;font-size:.94rem;margin-bottom:13px}
.paper ol{margin:0;padding:0;list-style:none}
.paper li{display:grid;grid-template-columns:37px 1fr;gap:11px;align-items:start;padding:13px 0;border-top:1px solid #edf1ef}
.paper li:first-child{border-top:0}
.paper li i{width:31px;height:31px;border-radius:9px;display:grid;place-items:center;font-style:normal;font-weight:800;background:#ffe6d9;color:#b54d3e}
.paper li:nth-child(2) i{background:#dff1f9;color:#246d8f}
.paper li:nth-child(3) i{background:#e4f4dc;color:#4a7c3c}
.paper li:hover i{transform:rotate(-8deg) scale(1.1)}
.paper li i{transition:transform .25s ease}
.paper li strong{display:block;line-height:1.3}
.paper li small{display:block;font-size:.83rem;color:#61788a;margin-top:2px}
.section{padding:76px 0}
.section-head{max-width:770px;margin-bottom:28px}
.section-head h2{font-size:clamp(2rem,3.6vw,3rem);margin:0 0 12px}
.section-head>p:last-child{color:#587084;margin:0}
.route{background:#fff}
.level-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.level-card{position:relative;appearance:none;text-align:left;width:100%;border:2px solid transparent;border-radius:18px;padding:23px 21px;min-height:226px;color:#15354d;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.level-card:hover{transform:translateY(-5px);box-shadow:0 15px 26px rgba(17,58,82,.11)}
.level-card[aria-pressed=true]{border-color:#102d50;box-shadow:0 6px 0 #102d50}
.level-card:after{content:"";position:absolute;left:20px;right:20px;bottom:15px;height:4px;border-radius:999px;background:#102d50;transform:scaleX(0);transform-origin:left;transition:transform .3s ease;opacity:.7}
.level-card:hover:after,.level-card[aria-pressed=true]:after{transform:scaleX(1)}
.level-card[data-level="Foundation"]{background:#e4f4ee}
.level-card[data-level="Intermediate"]{background:#ffecd3}
.level-card[data-level="Advanced"]{background:#e1f1fa}
.level-num{display:block;font-size:.73rem;font-weight:800;letter-spacing:.13em;opacity:.7;margin-bottom:31px}
.level-card strong{display:block;font-size:1.31rem;line-height:1.2;margin-bottom:8px}
.level-card small{font-size:.91rem;line-height:1.5;display:block}
.level-card .corner{position:absolute;right:19px;top:16px;font-size:1.45rem;font-weight:700;opacity:.5;transition:transform .25s ease,opacity .25s ease}
.level-card:hover .corner,.level-card[aria-pressed=true] .corner{transform:translate(3px,-3px);opacity:1}
.level-message{min-height:28px;color:#496679;font-size:.92rem;margin:20px 0 0}
.library{background:#eef7fa}
.library-tools{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap;margin:25px 0 20px}
.filters{display:flex;flex-wrap:wrap;gap:8px}
.filters button{border:1px solid #c4dae4;background:#fff;color:#24546a;border-radius:999px;padding:9px 14px;font-weight:700;font-size:.9rem;transition:transform .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease}
.filters button:hover{transform:translateY(-2px);border-color:#5d92a5}
.filters button[aria-pressed=true]{background:#102d50;color:#fff;border-color:#102d50}
.library-count{color:#547184;font-size:.91rem}
.resource-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}
.resource{background:#fff;border:1px solid #d9e8ef;border-radius:17px;padding:22px 23px;box-shadow:0 7px 18px rgba(17,58,82,.035);transition:transform .22s ease,box-shadow .22s ease}
.resource:hover{transform:translateY(-3px);box-shadow:0 13px 25px rgba(17,58,82,.1)}
.resource[hidden]{display:none}
.resource-top{display:flex;justify-content:space-between;gap:10px;align-items:start;margin-bottom:13px}
.resource-code{font-size:.75rem;font-weight:800;letter-spacing:.11em;color:#236e80;text-transform:uppercase}
.resource-tag{font-size:.74rem;font-weight:700;border-radius:999px;padding:5px 9px;background:#eaf5f2;color:#2f765f;white-space:nowrap}
.resource[data-skill="writing"] .resource-tag{background:#ffece6;color:#af5844}
.resource[data-skill="reading"] .resource-tag{background:#e6f2fb;color:#3d6f98}
.resource[data-skill="speaking"] .resource-tag{background:#f2eafd;color:#7750a2}
.resource h3{font-size:1.27rem;margin-bottom:9px}
.resource>p{color:#577184;font-size:.94rem;margin-bottom:14px}
.resource-meta{font-size:.83rem;color:#5d7586;margin-bottom:12px}
.resource details{border-top:1px solid #e8eef1;padding-top:13px}
.resource summary{font-weight:800;color:#165d7a;cursor:pointer}
.resource details p,.resource details li{font-size:.9rem;color:#435e72}
.resource details p{margin:12px 0 0}
.resource details ul,.resource details ol{margin:10px 0 0;padding-left:20px}
.resource details li{margin:5px 0}
.resource details blockquote{font-size:.9rem;border-left:3px solid #ff806d;padding-left:12px;margin:13px 0 0;color:#435e72}
.empty{background:#fff;padding:26px;border-radius:14px;color:#526d80}
.live{background:#fff}
.live-box{display:grid;grid-template-columns:1.08fr .92fr;gap:32px;align-items:center;background:#102d50;color:#fff;border-radius:25px;padding:42px;overflow:hidden}
.live-box .eyebrow{color:#ffcd72}
.live-box h2{font-size:clamp(2rem,3.5vw,3.1rem);margin-bottom:17px}
.live-box p{color:#d9e9f3}
.live-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:23px}
.live-note{border-radius:17px;background:#dff2ee;color:#183e45;padding:24px;transform:rotate(2deg)}
.live-note b{display:block;font-size:1.15rem;margin-bottom:9px}
.live-note p{color:#385e62;margin:0}
.community-teachers{background:#eef7fa}
.teacher-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.teacher-card{display:grid;grid-template-columns:170px minmax(0,1fr);overflow:hidden;background:#fff;border:1px solid #d9e8ef;border-radius:20px;box-shadow:0 10px 28px rgba(16,45,80,.05)}
.teacher-photo{min-height:300px;overflow:hidden;background:#dce8ec}
.teacher-photo img{display:block;width:100%;height:100%;object-fit:cover;object-position:center top}
.teacher-card-linh .teacher-photo img{transform:scale(1.9);transform-origin:center 73%}
.teacher-card-copy{padding:25px 24px;display:flex;flex-direction:column;align-items:start}
.teacher-role{font-size:.7rem;font-weight:800;letter-spacing:.12em;color:#2d7880}
.teacher-card h3{font-size:1.5rem;margin:11px 0 9px}
.teacher-card p{font-size:.88rem;line-height:1.6;color:#536d7e;margin:0 0 10px}
.teacher-card a{margin-top:auto;padding-top:7px;color:#123b5c;font-size:.88rem;font-weight:800;text-decoration:none}
.teacher-card a:hover{text-decoration:underline}
.paid-courses{background:#fffaf2}
.paid-intro{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:27px}
.paid-intro>div{max-width:740px}.paid-intro h2{font-size:clamp(2rem,3.6vw,3rem);margin:0 0 11px}.paid-intro>div>p:last-child{color:#587084;margin:0}
.paid-preview{flex:none;max-width:280px;padding:8px 12px;border-radius:999px;background:#ffedd3;color:#855c2d;font-size:.7rem;font-weight:800;letter-spacing:.06em;text-align:center}
.paid-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}
.paid-card{display:flex;flex-direction:column;min-height:362px;padding:24px 22px;background:#fff;border:1px solid #e2e6e4;border-radius:19px;box-shadow:0 9px 25px rgba(16,45,80,.04);transition:transform .22s ease,box-shadow .22s ease}
.paid-card:hover{transform:translateY(-4px);box-shadow:0 16px 30px rgba(16,45,80,.1)}
.paid-card:nth-child(2){border-top:4px solid #f7c25b}.paid-card:nth-child(3){border-top:4px solid #75bed1}.paid-card:first-child{border-top:4px solid #7dc5aa}
.paid-index{color:#2d7880;font-size:.72rem;font-weight:800;letter-spacing:.13em}.paid-card h3{font-size:1.48rem;margin:16px 0 8px}.paid-card>p{font-size:.91rem;color:#587084;margin:0 0 21px;min-height:45px}
.paid-card dl{margin:0 0 22px}.paid-card dl div{display:flex;justify-content:space-between;gap:12px;border-top:1px solid #edf0ec;padding:10px 0;font-size:.85rem}.paid-card dt{color:#6c8090}.paid-card dd{margin:0;color:#123451;font-weight:800;text-align:right}
.paid-card>a{display:flex;align-items:center;justify-content:space-between;margin-top:auto;color:#123b5c;font-size:.9rem;font-weight:800;text-decoration:none}.paid-card>a:hover{text-decoration:underline}
.faq{background:#fff7e9}
.faq-list{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}
.faq details{background:#fff;border:1px solid #eedfca;border-radius:14px;padding:18px 20px}
.faq summary{font-weight:800;cursor:pointer;line-height:1.4}
.faq details p{color:#557085;margin:12px 0 0;font-size:.92rem}
.footer{background:#102d50;color:#dceaf4;padding:30px 0;font-size:.88rem}
.footer .shell{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.footer a{color:#fff}
:focus-visible{outline:3px solid #e67e64;outline-offset:3px}
@media(prefers-reduced-motion:no-preference){
  .hero:before{animation:hero-orbit 16s ease-in-out infinite alternate}
  .hero .eyebrow:before{animation:soft-pulse 2.8s ease-in-out infinite}
  .hero-spark-one{animation:spark-drift 4s ease-in-out infinite alternate}
  .hero-spark-two{animation:spark-drift 5s 1s ease-in-out infinite alternate-reverse}
  .hero-grid>div:first-child{animation:hero-appear .7s cubic-bezier(.2,.7,.2,1) both}
  .paper{animation:paper-appear .8s .12s cubic-bezier(.2,.7,.2,1) both}
  .paper li{animation:step-enter .5s ease both}
  .paper li:first-child{animation-delay:.35s}
  .paper li:nth-child(2){animation-delay:.48s}
  .paper li:nth-child(3){animation-delay:.61s}
  .motion-ready .reveal{opacity:0;transform:translateY(22px);transition:opacity .65s ease,transform .65s cubic-bezier(.2,.7,.2,1)}
  .motion-ready .reveal.is-visible{opacity:1;transform:translateY(0)}
  .motion-ready .level-card.reveal:nth-child(2){transition-delay:.09s}
  .motion-ready .level-card.reveal:nth-child(3){transition-delay:.18s}
  .motion-ready .level-card.reveal.is-visible:hover{transform:translateY(-6px)}
  .resource:not([hidden]){animation:card-appear .45s ease both}
  .resource:nth-child(2n):not([hidden]){animation-delay:.06s}
  .faq details{transition:transform .2s ease,box-shadow .2s ease}
  .faq details:hover{transform:translateY(-2px);box-shadow:0 10px 20px rgba(17,58,82,.07)}
}
@keyframes hero-orbit{to{transform:translate(-35px,28px)}}
@keyframes soft-pulse{50%{box-shadow:0 0 0 7px rgba(255,117,93,.17)}}
@keyframes hero-appear{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
@keyframes paper-appear{from{opacity:0;transform:translateY(24px) rotate(0)}to{opacity:1;transform:translateY(0) rotate(1deg)}}
@keyframes card-appear{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
@keyframes step-enter{from{opacity:0;transform:translateX(15px)}to{opacity:1;transform:translateX(0)}}
@keyframes spark-drift{to{transform:translateY(-12px) rotate(16deg) scale(1.12)}}
@media(max-width:930px){.hero-grid{gap:28px}.level-grid{grid-template-columns:repeat(2,1fr)}.teacher-grid{grid-template-columns:1fr}.paid-grid{grid-template-columns:1fr 1fr}.faq-list{grid-template-columns:1fr}}
@media(max-width:710px){.hero-grid,.live-box{grid-template-columns:1fr}.paper{max-width:560px}.resource-grid{grid-template-columns:1fr}}
@media(max-width:560px){.shell{width:min(100% - 34px,1160px)}.nav{min-height:67px}.nav img{width:123px}.nav-links{gap:10px}.nav-links a{font-size:.75rem}.nav-links a:nth-child(1),.nav-links a:nth-child(2){display:none}.nav-links .nav-test{padding:7px 10px}.hero-grid{padding:52px 0 61px}.hero-spark-one{right:2%;top:14px;font-size:1.7rem}.hero-spark-two{display:none}h1{font-size:clamp(2.55rem,11vw,3.5rem)}.hero-actions .btn{width:100%}.paper{padding:22px}.section{padding:57px 0}.level-grid{gap:9px}.level-card{min-height:195px;padding:16px}.level-card:after{left:15px;right:15px}.level-num{margin-bottom:23px}.level-card strong{font-size:1.07rem}.level-card small{font-size:.83rem}.resource{padding:19px}.live-box{padding:26px}.live-note{transform:none}.teacher-card{grid-template-columns:1fr}.teacher-photo{height:280px;min-height:0}.teacher-card-copy{padding:22px}.paid-intro{display:block}.paid-preview{display:inline-block;margin-top:15px}.paid-grid{grid-template-columns:1fr}.paid-card{min-height:0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn,.level-card,.level-card:after,.level-card .corner,.filters button,.resource,.paid-card,.paper li i{transition:none}.hero:before,.hero .eyebrow:before,.hero-spark,.hero-grid>div:first-child,.paper,.paper li,.resource:not([hidden]){animation:none}}