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.metric b{color:var(--orange)}.text-link,.steps article>b,.tag{color:var(--blue)}
.mentor-visual{background:linear-gradient(145deg,#10857b,#07544f)}.mentor-caption{background:rgba(7,75,70,.9)}
.price-card{border-radius:28px}.guarantee{border-color:#a8ded6}.guarantee-icon{background:#e5f7f4;color:var(--green)}
.modal-panel{font-family:"Be Vietnam Pro",sans-serif}.modal-panel h2{text-transform:none;font-size:clamp(1.65rem,4vw,2.2rem)}
.flow-panel{display:none}.flow-panel.show{display:block}.payment-price{font-size:2.7rem;font-weight:800;color:var(--orange);line-height:1.15;margin:8px 0}.payment-qr{width:min(100%,360px);height:auto;margin:22px auto;border:1px solid var(--line);border-radius:18px;background:#fff;padding:8px}.payment-code{display:grid;gap:5px;padding:16px;margin:18px 0;background:var(--soft);border:1px solid var(--line);border-radius:14px;text-align:center}.payment-code span{font-size:.72rem;color:var(--muted)}.payment-code strong{font-size:1.2rem;letter-spacing:.08em;color:var(--blue)}.secondary-action{display:block;margin:15px auto 0;border:0;background:transparent;color:var(--muted);font-weight:700}.success-icon{width:68px;height:68px;display:grid;place-items:center;border-radius:50%;background:#e5f7f4;color:var(--green);font-size:2rem;font-weight:900;margin-bottom:20px}
.modal-steps span.done{background:var(--green);color:#fff}.modal-steps i.done{background:var(--green)}
@media(min-width:780px){.hero{min-height:690px;display:flex;align-items:center}.hero-grid{grid-template-columns:1.15fr .85fr}.section{padding:88px 0}}
@media(max-width:779px){.hero h1{font-size:clamp(2.25rem,11vw,3.25rem)}.hero{padding-top:54px}.notice{font-size:.7rem}.nav-cta{display:none}.modal-panel{padding:24px 20px}}

/* Hero v2: large editorial title + circular teacher portrait */
.site-header .container,.hero .container{width:min(100% - 32px,1388px)}
.brand-avatar{width:48px;height:48px;border-radius:50%;object-fit:cover;object-position:center;transform:scale(1.04);border:2px solid #e5efed}
.hero{padding:92px 0 84px;min-height:760px}
.hero-grid{gap:70px}
.hero h1{max-width:860px;font-size:clamp(3rem,4.3vw,5.15rem);line-height:1.04;letter-spacing:-.055em}
.hero h1 span,.hero h1 em{display:block}
.hero h1 span{color:#fff}
.hero h1 em{color:#62dfd2;font-style:normal;margin-top:8px}
.hero-sub{max-width:760px;font-size:1.1rem;line-height:1.7}
.hero-portrait{position:relative;width:min(100%,570px);margin:0 auto;align-self:center}
.portrait-circle{position:relative;width:100%;aspect-ratio:1;border-radius:50%;overflow:hidden;background:#edf5f4;border:6px solid rgba(255,255,255,.96);box-shadow:0 28px 70px rgba(2,52,48,.28)}
.portrait-circle:after{content:"";position:absolute;inset:0;border-radius:50%;box-shadow:inset 0 0 0 1px rgba(12,98,93,.18);pointer-events:none}
.portrait-circle img{width:100%;height:100%;object-fit:cover}
.portrait-label{position:absolute;z-index:2;display:grid;min-width:158px;padding:18px 20px;border-radius:18px;background:#fff;color:#164f4b;box-shadow:0 18px 45px rgba(3,56,52,.18)}
.portrait-label small{font-size:.75rem;font-weight:700}.portrait-label strong{font-size:1.35rem;color:var(--orange);line-height:1.25}
.portrait-label-left{left:-62px;top:25%}.portrait-label-right{right:-54px;bottom:14%}.portrait-label-right strong{font-size:1.45rem}.portrait-label-right small{margin-top:4px}
@media(min-width:780px){.hero-grid{grid-template-columns:minmax(0,1.2fr) minmax(440px,.8fr)}}
@media(max-width:1100px) and (min-width:780px){.hero-grid{grid-template-columns:1.08fr .92fr;gap:36px}.hero h1{font-size:clamp(3rem,5vw,4rem)}.portrait-label-left{left:-28px}.portrait-label-right{right:-18px}}
@media(max-width:779px){.brand-avatar{width:40px;height:40px}.hero{min-height:auto;padding:56px 0 72px}.hero-grid{gap:52px}.hero h1{font-size:clamp(2.6rem,12vw,4rem);line-height:1.06}.hero h1 em{margin-top:6px}.hero-portrait{width:min(88vw,480px)}.portrait-label{min-width:132px;padding:13px 15px;border-radius:14px}.portrait-label strong{font-size:1.05rem}.portrait-label small{font-size:.65rem}.portrait-label-left{left:-4px;top:18%}.portrait-label-right{right:-4px;bottom:8%}}

/* Instructor v2: clean authority card + three real credentials */
.instructor-section{background:#f5f9f8}.instructor-wrap{width:min(100% - 32px,1120px)}
.instructor-heading h2,.credential-heading h2{color:#104f4c;margin-bottom:0}.instructor-heading .eyebrow,.credential-heading .eyebrow{color:#0c7f77}
.instructor-card{display:grid;gap:28px;align-items:center;margin-top:36px;padding:28px;background:#fff;border:1px solid var(--line);border-radius:26px;box-shadow:0 14px 42px rgba(16,79,76,.07)}
.instructor-photo{width:176px;height:176px;margin:auto;border-radius:50%;object-fit:cover;object-position:center;transform:scale(1.035);border:6px solid #e6f0ee;box-shadow:0 12px 30px rgba(12,98,93,.12)}
.instructor-copy h3{font-size:1.45rem;color:#104f4c;margin-bottom:16px}.instructor-checks{list-style:none;display:grid;gap:12px;color:#405562;font-size:.9rem}
.instructor-checks li{position:relative;padding-left:25px}.instructor-checks li:before{content:"✓";position:absolute;left:0;top:0;color:#0c8d81;font-weight:900}
.credential-heading{margin-top:58px}.credential-grid{display:grid;gap:20px;margin-top:30px;align-items:stretch}
.credential-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:20px;padding:13px;overflow:hidden;box-shadow:0 10px 30px rgba(16,79,76,.07);transition:transform .2s ease,box-shadow .2s ease}
.credential-card:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(16,79,76,.12)}
.credential-media{display:grid;place-items:center;width:100%;aspect-ratio:4/3;overflow:hidden;border-radius:13px;background:#f1f6f5}
.credential-media img{width:100%;height:100%;object-fit:contain}.credential-card figcaption{display:grid;text-align:center;padding:14px 8px 7px;margin-top:auto}
.credential-card figcaption b{font-size:.9rem;color:#164f4c}.credential-card figcaption span{font-size:.74rem;color:#6a7881;margin-top:3px}
.instructor-action{text-align:center;margin-top:30px}
@media(min-width:700px){.instructor-card{grid-template-columns:260px 1fr;padding:32px 44px}.instructor-photo{width:190px;height:190px}.credential-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:699px){.instructor-section{padding-block:68px}.instructor-card{text-align:center;padding:25px 20px}.instructor-checks{text-align:left}.credential-heading{margin-top:48px}.credential-grid{grid-template-columns:1fr}.credential-card{max-width:520px;width:100%;margin-inline:auto}.instructor-action .cta{width:100%;font-size:.78rem;padding-inline:14px}}

/* Feedback v2: ten uncropped, readable proof images */
.feedback-section{background:#fff}.feedback-heading h2{color:#104f4c;margin-bottom:0}.feedback-heading .eyebrow{color:#0c7f77}
.feedback-list{display:grid;grid-template-columns:minmax(0,1fr);align-items:start;gap:38px;max-width:980px;margin:40px auto 0}
.feedback-entry{display:block;position:relative;width:100%;height:auto;overflow:visible;margin:0 auto;border:1px solid var(--line);border-radius:24px;padding:18px;background:#fff;box-shadow:0 14px 42px rgba(16,79,76,.08)}
.feedback-entry.phone-shot,.feedback-entry.vertical{max-width:620px}.feedback-entry.landscape{max-width:920px}
.feedback-image{display:block;width:100%;height:auto;overflow:hidden;border:1px solid var(--line);border-radius:16px;background:#f4f7f7;transition:transform .2s ease,box-shadow .2s ease}
.feedback-image:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(16,79,76,.11)}
.feedback-image img{display:block;width:100%;height:auto;max-height:none;object-fit:contain;background:#f4f7f7}
.feedback-entry.phone-shot .feedback-image{aspect-ratio:var(--feedback-ratio)}.feedback-entry.phone-shot .feedback-image img{width:100%;height:100%;object-fit:contain}
.feedback-caption{display:grid;text-align:center;padding:15px 10px 2px;color:#536572;font-size:.84rem;line-height:1.55}.feedback-caption b{display:flex;align-items:center;justify-content:center;color:#15514e;font-size:.95rem}.feedback-caption>span{margin-top:3px}
.feedback-number{display:inline-grid;place-items:center;min-width:31px;height:31px;margin-right:8px;border-radius:50%;background:#0c746d;color:#fff;font-size:.78rem}
.feedback-hint{text-align:center;color:#718079;font-size:.78rem;margin-top:21px}
.feedback-section .final-box{max-width:920px;margin:70px auto 0;padding:48px 34px;border:0;border-radius:26px;background:linear-gradient(140deg,#0b675f,#07514c);color:#fff;text-align:center;box-shadow:0 20px 55px rgba(7,81,76,.18)}
.feedback-section .final-box>p{max-width:710px;margin:0 auto 23px;color:#d2ebe8}.feedback-section .final-box>small{display:block;margin-top:13px;color:#a9d1cc;font-size:.68rem}
@media(max-width:620px){.feedback-list{gap:20px;margin-top:30px}.feedback-entry{padding:10px;border-radius:18px}.feedback-image{border-radius:12px}.feedback-caption{padding:12px 4px 2px;font-size:.78rem}.feedback-caption b{font-size:.88rem}.feedback-number{min-width:27px;height:27px}.feedback-section .final-box{margin-top:52px;padding:36px 20px;border-radius:21px}.feedback-section .final-box .cta{width:100%;font-size:.75rem;padding-inline:12px}}

/* Offer v3: fixed-deadline campaign, transparent value stack */
.offer-bar{position:relative;z-index:45;background:linear-gradient(90deg,#f15a0a,#ff7318);color:#fff;padding:10px 16px;box-shadow:0 8px 24px rgba(151,54,4,.18)}
.offer-bar-inner{width:min(100%,1180px);margin:auto;display:flex;align-items:center;justify-content:center;gap:22px;flex-wrap:wrap}
.offer-price{display:flex;align-items:center;gap:10px;font-size:.9rem;font-weight:700}.offer-price s{opacity:.75}.offer-price strong{font-size:1.12rem}.discount-badge{padding:4px 9px;border-radius:999px;background:#0b8b62;font-size:.75rem}
.offer-countdown{display:flex;align-items:center;gap:10px}.offer-countdown>small{font-size:.62rem;font-weight:800;letter-spacing:.06em}.countdown-clock{display:flex;align-items:flex-start;gap:5px;padding:5px 9px;border-radius:12px;background:rgba(116,38,0,.28)}.countdown-clock>span{display:grid;text-align:center;min-width:34px}.countdown-clock b{font-size:1rem;line-height:1.05}.countdown-clock i{font-style:normal;font-size:.48rem;text-transform:uppercase;opacity:.76}.countdown-clock em{font-style:normal;font-weight:900;line-height:1.1}
.offer-cta{padding:9px 16px;border:1px solid rgba(255,255,255,.5);border-radius:999px;color:#fff;text-decoration:none;font-size:.72rem;font-weight:900;background:rgba(116,38,0,.18)}
.bonus-bar{position:relative;z-index:44;background:linear-gradient(90deg,#2a1265,#3e197e);color:#fff;padding:10px 16px}.bonus-bar-inner{width:min(100%,1280px);margin:auto;display:flex;align-items:center;justify-content:center;gap:9px;flex-wrap:wrap;font-size:.72rem}.bonus-bar-inner>strong:first-child{color:#ffd54d}.bonus-bar span{color:#e7dbff}.bonus-bar span b{color:#5dffb9}.bonus-bar i{font-style:normal;opacity:.45}.bonus-total{color:#66ffc1}
.hero h1 .hero-second-line{display:flex;align-items:baseline;gap:.22em;white-space:nowrap;font-size:.82em}.hero h1 .hero-second-line em{display:inline;margin:0;font-size:1em}
.portrait-circle img{object-position:50% 50%;transform:scale(1.025)}
.value-list li b{white-space:nowrap;color:#67f0c1}.value-note{margin-top:15px;color:#a9d8d2;font-size:.7rem}
.original-price{display:flex;align-items:center;gap:9px;margin-bottom:8px;color:var(--muted);font-size:.78rem}.original-price s{font-weight:800}.original-price span{padding:4px 8px;border-radius:999px;background:#ddf6ed;color:#087253;font-size:.65rem;font-weight:900}.price-total{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:17px;padding:13px 15px;border-radius:12px;background:#f0f8f7;font-size:.72rem}.price-total b{color:var(--green);font-size:.9rem}
@media(max-width:779px){.offer-bar{padding:9px 12px}.offer-bar-inner{gap:9px}.offer-price{font-size:.72rem}.offer-price strong{font-size:.9rem}.offer-countdown{width:100%;justify-content:center}.offer-countdown>small{display:none}.offer-cta{display:none}.bonus-bar-inner{display:block;text-align:center;line-height:1.85}.bonus-bar i{display:none}.bonus-total{display:block}.hero h1 .hero-second-line{font-size:.74em}.portrait-circle img{transform:scale(1.035)}}
@media(max-width:410px){.hero h1 .hero-second-line{font-size:.69em}.countdown-clock>span{min-width:31px}.bonus-bar{padding-inline:10px}}

/* 2026-09-14.12 — Xay Kenh-inspired sales layout, adapted for TOEIC */
:root{--purple:#2b145f;--purple2:#4b238e;--purple3:#6f3dd1;--cream:#fffaf5;--orange:#f45b0b;--orange2:#ff812f;--ink:#171329;--muted:#655f73;--line:#e7e0ee;--soft:#faf8fc;--green:#13866f;--shadow:0 22px 65px rgba(43,20,95,.13)}
body{color:var(--ink);background:#fff;font-size:16px}.container{width:min(100% - 36px,1180px)}
.site-header{top:0;border-color:#eee8f5;box-shadow:0 5px 22px rgba(35,17,75,.05)}.nav-wrap{height:74px}.brand{color:#2b145f}.brand-avatar{border-color:#fff;box-shadow:0 0 0 2px #ece3f7}.nav-links a:hover{color:var(--purple3)}.nav-cta{background:linear-gradient(135deg,var(--orange),var(--orange2));box-shadow:0 8px 22px rgba(244,91,11,.22)}
.hero{min-height:700px;padding:76px 0 84px;background:radial-gradient(circle at 78% 20%,rgba(138,83,232,.38),transparent 30%),radial-gradient(circle at 12% 92%,rgba(255,112,24,.15),transparent 32%),linear-gradient(135deg,#21104b 0%,#35156c 48%,#4a2187 100%)}
.hero:before{inset:0;opacity:.17;background:radial-gradient(circle at 1px 1px,rgba(255,255,255,.34) 1px,transparent 0);background-size:31px 31px;mask-image:linear-gradient(90deg,#000,transparent 58%)}
.hero-grid{grid-template-columns:minmax(0,1.12fr) minmax(410px,.88fr);gap:76px}.kicker{display:inline-flex;width:auto;padding:9px 14px;border:1px solid rgba(255,255,255,.2);border-radius:999px;background:rgba(255,255,255,.07);color:#f3eaff;letter-spacing:.08em}.kicker i{background:#ff8845;box-shadow:0 0 0 5px rgba(255,136,69,.14)}
.hero h1{font-size:clamp(3rem,4.8vw,5.5rem);line-height:1.02;max-width:900px}.hero h1>span:first-child{color:#fff}.hero h1 .hero-second-line{display:block;margin-top:10px;color:#ffb27c;font-size:.58em;line-height:1.08;white-space:nowrap}.hero-sub{color:#e5dcf5;font-size:clamp(1rem,1.45vw,1.16rem);max-width:720px}.hero-benefits{grid-template-columns:repeat(3,max-content);gap:10px 18px;color:#fff;font-size:.82rem}.hero-benefits span{padding:7px 11px;border:1px solid rgba(255,255,255,.14);border-radius:999px;background:rgba(255,255,255,.06)}
.cta{border-radius:999px;padding:16px 27px;color:#fff;background:linear-gradient(135deg,var(--orange),var(--orange2));box-shadow:0 14px 34px rgba(244,91,11,.32);letter-spacing:-.01em}.micro-price b{font-size:1.4rem;color:#fff}.micro-price small{color:#d7cce9}.micro-price s{opacity:.7}.disclaimer{color:#bdb0d1}
.hero-portrait{width:min(100%,535px)}.portrait-circle{border:7px solid #fff;background:#e8e2f2;box-shadow:0 32px 85px rgba(13,5,31,.42),0 0 0 12px rgba(255,255,255,.08)}.portrait-circle img{width:100%;height:100%;object-fit:cover;object-position:center;transform:scale(1.075)}.portrait-label{border:1px solid #eee5f7;box-shadow:0 18px 45px rgba(28,12,61,.22)}.portrait-label-left{left:-38px}.portrait-label-right{right:-32px}.portrait-label strong{color:var(--orange)}
.proof-ribbon{position:relative;z-index:3;margin-top:-1px;padding:0 0 14px;background:linear-gradient(180deg,#4a2187 0,#fff 82%)}.proof-ribbon-grid{display:grid;grid-template-columns:repeat(4,1fr);transform:translateY(30px);overflow:hidden;border:1px solid #e6ddf0;border-radius:22px;background:#fff;box-shadow:0 18px 50px rgba(43,20,95,.12)}.proof-ribbon-grid div{display:grid;gap:2px;padding:21px 24px;text-align:center;border-right:1px solid #eee8f3}.proof-ribbon-grid div:last-child{border:0}.proof-ribbon-grid b{font-size:1.4rem;color:var(--purple2)}.proof-ribbon-grid span{font-size:.7rem;color:var(--muted)}
.section{padding:92px 0}.soft{background:linear-gradient(180deg,#fbf9fd,#f7f3fb)}.eyebrow,.section-label{color:var(--purple3)}h2 em{color:var(--purple3)}
.pain-grid article,.steps article,.system-grid article,.fit-grid article,.faq details{border-color:#e8e0ef;box-shadow:0 12px 34px rgba(43,20,95,.055)}.pain-grid article.active{border-color:#ffb887;box-shadow:0 16px 42px rgba(244,91,11,.1)}.insight,.navy,.pricing,.proof-section,.outcome{background:radial-gradient(circle at 86% 16%,rgba(135,78,227,.34),transparent 30%),linear-gradient(135deg,#24104f,#431d7d)}.steps article>span{background:linear-gradient(145deg,var(--purple2),var(--purple3))}.system-grid .primary{background:linear-gradient(145deg,#30135f,#6333ac)}.system-grid .community{background:linear-gradient(135deg,#fff4ea,#f5edff)}
.instructor-section{background:#fbf9fd}.instructor-wrap{width:min(100% - 36px,1180px)}.instructor-heading h2,.credential-heading h2,.feedback-heading h2{color:#2d1759}.instructor-heading .eyebrow,.credential-heading .eyebrow,.feedback-heading .eyebrow{color:var(--purple3)}.instructor-card{margin-top:38px;padding:40px 52px;border-color:#e6dced;border-radius:30px;box-shadow:0 22px 65px rgba(43,20,95,.1)}.instructor-photo{width:215px;height:215px;border:0;box-shadow:0 0 0 7px #fff,0 0 0 9px #e6dcf0,0 20px 45px rgba(43,20,95,.18);object-fit:cover;object-position:center;transform:scale(1.035)}.instructor-copy h3{font-size:1.7rem;color:#30155d}.instructor-checks{font-size:.92rem;gap:14px}.instructor-checks li:before{color:var(--orange)}
.credential-heading{margin-top:70px}.credential-card{border-color:#e5dcec;border-radius:22px;box-shadow:0 16px 42px rgba(43,20,95,.08);transition:transform .2s ease,box-shadow .2s ease}.credential-card:hover{transform:translateY(-4px);box-shadow:0 23px 52px rgba(43,20,95,.14)}.credential-media{background:#f5f1f9}.credential-card figcaption b{color:#341862}.instructor-action .cta{padding-inline:34px}
.pricing{padding-block:110px}.pricing-grid{gap:64px}.pricing h2{font-size:clamp(2rem,3.6vw,3.35rem)}.value-list{gap:0;border-top:1px solid rgba(255,255,255,.14)}.value-list li{padding:14px 0}.value-list b{color:#7dffc9}.price-card{position:relative;border:1px solid rgba(255,255,255,.5);border-radius:30px;padding:34px;box-shadow:0 34px 90px rgba(14,5,33,.38)}.price-card:before{content:"ƯU ĐÃI CÓ THỜI HẠN";position:absolute;top:-15px;left:50%;transform:translateX(-50%);white-space:nowrap;padding:7px 16px;border-radius:999px;background:linear-gradient(135deg,var(--orange),var(--orange2));color:#fff;font-size:.64rem;font-weight:900;letter-spacing:.08em}.price-card .price{font-size:clamp(3.5rem,6vw,5rem);color:var(--purple2)}.price-total{background:#f3eef9}.price-total b{color:var(--purple3)}
.guarantee{border-color:#d9c9e8;box-shadow:0 18px 50px rgba(43,20,95,.09)}.guarantee-icon{background:#f0e9fa;color:var(--purple3)}
.feedback-section{background:#fff}.feedback-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;max-width:1080px}.feedback-entry,.feedback-entry.phone-shot,.feedback-entry.vertical,.feedback-entry.landscape{max-width:none;padding:13px;border-radius:22px;box-shadow:0 14px 42px rgba(43,20,95,.08)}.feedback-entry.phone-shot:nth-child(1),.feedback-entry.phone-shot:nth-child(2){max-width:none}.feedback-image{border-color:#e7dfed;background:#f7f4fa}.feedback-entry.phone-shot .feedback-image{aspect-ratio:946 / 1120;position:relative}.feedback-entry.phone-shot .feedback-image img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:top}.feedback-number{background:var(--purple2)}.feedback-caption b{color:#32185e}.feedback-section .final-box{background:radial-gradient(circle at 80% 20%,rgba(128,76,220,.34),transparent 35%),linear-gradient(135deg,#281052,#4b2187);box-shadow:0 25px 65px rgba(43,20,95,.2)}
.footer{background:#170a32}.brand-mark{background:linear-gradient(145deg,var(--purple2),var(--purple3))}.sticky{border-color:#e4daec;box-shadow:0 -10px 28px rgba(43,20,95,.12)}

@media(max-width:1100px) and (min-width:780px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:38px}.hero h1{font-size:clamp(3rem,5.2vw,4.45rem)}.hero-benefits{grid-template-columns:1fr}.portrait-label-left{left:-12px}.portrait-label-right{right:-8px}}
@media(max-width:779px){.container,.instructor-wrap{width:min(100% - 28px,1180px)}.offer-bar{position:relative}.bonus-bar{display:block;padding:12px 14px}.bonus-bar-inner{display:grid;grid-template-columns:1fr;gap:3px;text-align:left;line-height:1.45;font-size:.68rem}.bonus-bar-inner>strong:first-child{margin-bottom:3px}.bonus-bar span{position:relative;padding-left:15px}.bonus-bar span:before{content:"✓";position:absolute;left:0;color:#66ffc1;font-weight:900}.bonus-bar i{display:none}.nav-wrap{height:62px}.brand-avatar{width:42px;height:42px}.brand span{font-size:.78rem}.hero{padding:50px 0 70px}.hero-grid{display:grid;grid-template-columns:1fr;gap:46px}.hero h1{font-size:clamp(2.35rem,11.4vw,3.7rem)}.hero h1 .hero-second-line{font-size:.52em;white-space:nowrap}.hero-benefits{grid-template-columns:1fr;gap:8px}.hero-benefits span{width:max-content}.hero-actions{width:100%}.hero-actions .cta{width:100%;font-size:.75rem;padding-inline:14px}.hero-portrait{width:min(86vw,470px)}.portrait-circle img{transform:scale(1.09)}.portrait-label-left{left:0}.portrait-label-right{right:0}.proof-ribbon{padding-bottom:30px}.proof-ribbon-grid{grid-template-columns:repeat(2,1fr);transform:translateY(20px)}.proof-ribbon-grid div{padding:15px 10px}.proof-ribbon-grid div:nth-child(2){border-right:0}.proof-ribbon-grid div:nth-child(-n+2){border-bottom:1px solid #eee8f3}.proof-ribbon-grid b{font-size:1.1rem}.section{padding:70px 0}.instructor-card{padding:28px 21px}.instructor-photo{width:190px;height:190px;transform:scale(1.035)}.pricing{padding-block:82px}.price-card{padding:30px 22px}.feedback-list{grid-template-columns:1fr}.feedback-entry.phone-shot .feedback-image{aspect-ratio:var(--feedback-ratio)}.feedback-entry.phone-shot .feedback-image img{position:static;object-position:center}.feedback-entry{padding:10px}}
@media(max-width:390px){.hero h1{font-size:2.28rem}.hero h1 .hero-second-line{font-size:.48em}.offer-price{font-size:.67rem}.countdown-clock{gap:3px;padding-inline:7px}.countdown-clock>span{min-width:28px}.portrait-label{padding:11px 12px;min-width:120px}}

/* v16: lock the small teacher logo to its circular frame. */
.brand-avatar-frame{width:48px;height:48px;flex:0 0 48px;display:block;overflow:hidden;border:2px solid #fff;border-radius:50%;background:#fff;box-shadow:0 0 0 2px #ece3f7}
.brand-avatar-frame .brand-avatar{display:block;width:100%;height:100%;border:0;border-radius:50%;object-fit:cover;object-position:50% 50%;transform:scale(1.1);transform-origin:50% 50%;box-shadow:none}
.portrait-label-score{min-width:0;text-align:center}
@media(max-width:779px){.brand-avatar-frame{width:42px;height:42px;flex-basis:42px}}

/* v20: centered teacher portraits and safe Vietnamese heading spacing. */
.brand-avatar-frame{display:grid;place-items:center;line-height:0}
.brand-avatar-frame .brand-avatar{width:100%;height:100%;object-position:50% 50%;transform:none}
.instructor-photo{object-position:50% 50%;transform:none}
.pricing-copy h2{line-height:1.26;letter-spacing:-.025em;text-wrap:balance}
@media(max-width:779px){.pricing-copy h2{line-height:1.22;letter-spacing:-.02em}}


/* V14 — vertical product showcase for the 5-part learning system */
.system-stack{width:min(100% - 36px,980px);display:grid;gap:30px;margin-top:42px}
.system-showcase{position:relative;overflow:hidden;padding:34px;border:1px solid #e5dced;border-radius:28px;background:#fff;box-shadow:0 18px 52px rgba(43,20,95,.08)}
.system-showcase.primary{border:0;background:linear-gradient(145deg,#30135f,#6333ac);color:#fff}
.system-showcase.community{background:linear-gradient(135deg,#fff8f1,#f7f0ff)}
.system-copy{position:relative;z-index:1;min-height:150px;padding-right:86px}
.system-copy .num{position:absolute;top:-12px;right:0;color:#f0ebf6;font-size:5rem;font-weight:950;line-height:1}
.system-showcase.primary .system-copy .num{color:rgba(255,255,255,.09)}
.system-copy h3{position:relative;margin-top:4px;font-size:clamp(1.35rem,2.5vw,2rem);letter-spacing:-.035em}
.system-copy>p:not(.tag){max-width:720px;margin-top:10px;color:var(--muted);font-size:.94rem;line-height:1.7}
.system-showcase.primary .system-copy>p:not(.tag){color:#e8dcf8}
.system-showcase .part-track,.system-showcase .progress,.system-showcase .metric,.system-showcase .answers,.system-showcase .timeline{margin-top:20px}
.system-showcase.primary .part-track i{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.18)}
.system-product-media{position:relative;margin:28px 0 0;overflow:hidden;border:1px solid #e4dced;border-radius:22px;background:#f7f3fb;box-shadow:0 14px 34px rgba(43,20,95,.1)}
.system-showcase.primary .system-product-media{border-color:rgba(255,255,255,.17);background:rgba(15,5,36,.38);box-shadow:0 18px 44px rgba(15,5,36,.25)}
.system-product-media>figcaption{padding:13px 18px;background:#fff;color:#5e4c72;font-size:.72rem;font-weight:800;text-align:center}
.system-showcase.primary .system-product-media>figcaption{background:rgba(10,4,28,.55);color:#eee5fb}

/* Course interface */
.intro-video-section{padding-top:105px;background:linear-gradient(180deg,#fff 0,#faf8fc 100%)}
.video-section-inner{width:min(100% - 36px,980px)}
.video-section-inner .lead{max-width:740px;margin:16px auto 32px}
.video-channel{display:flex;justify-content:center;align-items:center;gap:7px;width:max-content;max-width:100%;margin:0 auto 14px;padding:8px 13px;border:1px solid #e5dced;border-radius:999px;background:#fff;color:#5e4c72;font-size:.72rem}.video-channel span{color:#f45b0b;font-size:.8rem}.video-channel strong{color:#2b145f}
.video-channel-dark{margin:0;padding:13px 18px;width:100%;max-width:none;border:0;border-radius:0;background:rgba(10,4,28,.55);color:#d9ccec}.video-channel-dark strong{color:#fff}
.video-frame{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;border-radius:20px;background:#130928;box-shadow:0 22px 60px rgba(43,20,95,.18)}
.video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.intro-video-frame{margin-top:32px;border:1px solid #e1d7ec}
.course-demo-frame{border-radius:0}
.mock-browser{margin:28px;border:1px solid rgba(255,255,255,.18);border-radius:16px;background:#160b2d;box-shadow:0 24px 55px rgba(10,4,28,.28)}
.mock-toolbar{height:43px;display:flex;align-items:center;gap:7px;padding:0 15px;border-bottom:1px solid rgba(255,255,255,.1);color:#cdbde3;font-size:.66rem}
.mock-toolbar i{width:8px;height:8px;border-radius:50%;background:#ff7b54}.mock-toolbar i:nth-child(2){background:#ffc657}.mock-toolbar i:nth-child(3){background:#59d08b}.mock-toolbar span{margin-left:9px}
.mock-course{display:grid;grid-template-columns:minmax(0,2.25fr) minmax(170px,.75fr);min-height:315px}
.mock-video{display:grid;place-items:center;align-content:center;gap:8px;background:radial-gradient(circle at 68% 32%,rgba(255,137,76,.24),transparent 26%),linear-gradient(135deg,#2d135d,#4e2189);color:#fff;text-align:center}
.mock-video b{width:64px;height:64px;display:grid;place-items:center;padding-left:4px;border-radius:50%;background:linear-gradient(135deg,var(--orange),var(--orange2));font-size:1.3rem;box-shadow:0 12px 30px rgba(244,91,11,.35)}
.mock-video span{font-size:1.18rem;font-weight:900}.mock-video small{color:#d9ccec}
.mock-lessons{display:grid;align-content:start;gap:8px;padding:24px 18px;background:#21113c;color:#cbbadd}
.mock-lessons>b{margin-bottom:5px;color:#fff;font-size:.66rem}.mock-lessons span{padding:10px;border-radius:9px;font-size:.7rem}.mock-lessons .active{background:#6635ae;color:#fff;font-weight:800}

/* Vocabulary interface */
.vocab-preview{padding:30px 30px 0;background:linear-gradient(145deg,#f3effb,#eef7ff)}
.vocab-site-image{display:block;width:100%;height:auto;border:1px solid #e2d9ec;border-radius:18px 18px 0 0;box-shadow:0 24px 48px rgba(43,20,95,.12);object-fit:contain}
.vocab-dashboard{max-width:700px;margin:auto;padding:24px;border:1px solid #e2d9ec;border-radius:18px 18px 0 0;background:#fff;box-shadow:0 24px 48px rgba(43,20,95,.12)}
.vocab-top{display:flex;justify-content:space-between;color:var(--purple3);font-size:.68rem;font-weight:900}.vocab-top b{color:#7b6a8c}
.vocab-word{margin:22px 0;padding:27px;border-radius:16px;background:linear-gradient(135deg,#3c1a73,#6735af);color:#fff;text-align:center}
.vocab-word small{display:block;color:#d9c9ee;font-size:.6rem;font-weight:800}.vocab-word strong{display:block;margin-top:8px;font-size:clamp(1.65rem,4vw,2.6rem)}.vocab-word em{display:block;margin-top:3px;color:#e0d5ee;font-size:.8rem}.vocab-word p{margin-top:10px;font-weight:700}
.vocab-progress span{display:block;margin-bottom:8px;color:#5d4b70;font-size:.7rem;font-weight:800}.vocab-progress i{display:block;height:9px;overflow:hidden;border-radius:99px;background:#eee8f4}.vocab-progress i b{display:block;width:40%;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--purple2),var(--orange))}

/* Exam materials */
.exam-preview{min-height:390px;display:grid;place-items:center;padding:34px 26px 0;background:linear-gradient(135deg,#f9f6fc,#fff7ee)}
.exam-sheets{position:relative;width:min(100%,620px);height:330px}
.exam-sheet{position:absolute;width:min(62%,360px);height:285px;display:flex;flex-direction:column;justify-content:center;gap:10px;padding:36px;border-radius:12px;background:#fff;box-shadow:0 24px 55px rgba(43,20,95,.16);text-align:center}
.exam-sheet.back{top:12px;left:12%;transform:rotate(-6deg);border-top:9px solid var(--purple3);color:#341763}.exam-sheet.front{right:10%;bottom:0;transform:rotate(4deg);border-top:9px solid var(--orange);color:#2b164f}
.exam-sheet small{font-weight:900;letter-spacing:.16em}.exam-sheet b{font-size:1.5rem}.exam-sheet span{color:#806e92;font-size:.76rem}.exam-sheet div{display:flex;justify-content:center;gap:7px;margin-top:14px}.exam-sheet i{width:28px;height:28px;display:grid;place-items:center;border:1px solid #ded4e8;border-radius:7px;font-size:.65rem;font-style:normal;font-weight:900}

/* Detailed solution book */
.solution-preview{padding:34px 30px 0;background:linear-gradient(135deg,#f5f0fb,#eef7ff)}
.solution-gallery{display:grid;gap:16px;max-width:760px;margin:auto}
.solution-gallery a{display:block;overflow:hidden;border:1px solid #dcd4e7;border-radius:14px;background:#fff;box-shadow:0 18px 42px rgba(43,20,95,.12)}
.solution-gallery img{display:block;width:100%;height:auto;max-height:none;object-fit:contain}
.solution-book{max-width:720px;min-height:350px;display:grid;grid-template-columns:58px 1fr;margin:auto;overflow:hidden;border-radius:16px 16px 0 0;background:#fff;box-shadow:0 26px 58px rgba(43,20,95,.15)}
.book-spine{display:grid;place-items:center;background:linear-gradient(180deg,#31135f,#6132a9);color:#fff;font-size:.62rem;font-weight:900;letter-spacing:.15em;writing-mode:vertical-rl;transform:rotate(180deg)}
.solution-page{padding:38px}.solution-page>small{color:var(--purple3);font-weight:900}.solution-page>b{display:block;margin:9px 0 23px;color:#2d1655;font-size:1.35rem}.solution-page p{margin-top:12px;padding:14px 16px;border-left:4px solid #65c69a;border-radius:0 10px 10px 0;background:#f1fbf6;color:#526173;font-size:.8rem}.solution-page p.trap{border-color:var(--orange);background:#fff6ef}.solution-page div{display:flex;gap:8px;margin-top:20px}.solution-page i{width:36px;height:36px;display:grid;place-items:center;border:1px solid #ded5e8;border-radius:9px;font-size:.7rem;font-style:normal;font-weight:900}.solution-page i.correct{border-color:#8fd3b4;background:#eaf8f1;color:#167b52}

/* Listening roadmap */
.system-showcase.listening{background:linear-gradient(135deg,#f3f9ff,#f6f0ff)}
.listening-preview{padding:30px;background:linear-gradient(135deg,#eaf5ff,#f4efff)}
.listening-board{max-width:720px;display:grid;grid-template-columns:180px 1fr;gap:24px;align-items:center;margin:auto;padding:28px;border:1px solid #d8e7f4;border-radius:18px;background:#fff;box-shadow:0 22px 48px rgba(43,20,95,.1)}
.day-counter{display:grid;place-items:center;padding:20px;border-radius:16px;background:linear-gradient(145deg,#35166a,#6835b2);color:#fff}.day-counter small{font-weight:900;letter-spacing:.16em}.day-counter b{font-size:4.8rem;line-height:1}.day-counter span{color:#ffbb89;font-weight:900;letter-spacing:.18em}
.listening-plan{display:grid;gap:12px;color:#30155d}.listening-plan strong{font-size:.9rem}.listening-plan small{color:#766686}
.sound-wave{height:72px;display:flex;align-items:center;gap:7px}.sound-wave i{width:8px;border-radius:99px;background:linear-gradient(180deg,var(--orange),var(--purple3))}.sound-wave i:nth-child(1),.sound-wave i:nth-child(9){height:20px}.sound-wave i:nth-child(2),.sound-wave i:nth-child(8){height:34px}.sound-wave i:nth-child(3),.sound-wave i:nth-child(7){height:50px}.sound-wave i:nth-child(4),.sound-wave i:nth-child(6){height:64px}.sound-wave i:nth-child(5){height:42px}

/* Grammar roadmap */
.system-showcase.grammar{background:linear-gradient(135deg,#fffaf2,#f5f0ff)}
.grammar-preview{padding:30px;background:linear-gradient(135deg,#fff5e9,#f2edff)}
.grammar-board{max-width:720px;display:grid;grid-template-columns:190px 1fr;gap:24px;align-items:center;margin:auto;padding:28px;border:1px solid #eadfef;border-radius:18px;background:#fff;box-shadow:0 22px 48px rgba(43,20,95,.1)}
.grammar-count{display:flex;align-items:center;justify-content:center;gap:13px;padding:24px 18px;border-radius:16px;background:linear-gradient(145deg,#ff6a19,#ff8d4c);color:#fff}.grammar-count b{font-size:4rem;line-height:1}.grammar-count span{font-size:.72rem;font-weight:900;line-height:1.45;letter-spacing:.08em}
.grammar-flow{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:8px;align-items:center}.grammar-flow span{display:grid;place-items:center;min-height:76px;padding:12px;border:1px solid #e5dced;border-radius:12px;background:#faf8fc;color:#3c1c70;font-size:.68rem;font-weight:900;text-align:center}.grammar-flow i{color:var(--orange);font-style:normal;font-weight:900}

/* Learning community */
.community-preview{padding:30px 30px 0;background:linear-gradient(145deg,#fff1e6,#f3edfb)}
.community-site-image{display:block;width:100%;height:auto;border:1px solid #eadfee;border-radius:18px 18px 0 0;box-shadow:0 24px 52px rgba(43,20,95,.12);object-fit:contain}
.community-board{max-width:720px;margin:auto;overflow:hidden;border:1px solid #eadfee;border-radius:18px 18px 0 0;background:#fff;box-shadow:0 24px 52px rgba(43,20,95,.12)}
.community-head{display:flex;justify-content:space-between;gap:15px;padding:18px 22px;background:linear-gradient(135deg,#321461,#6030a6);color:#fff;font-size:.7rem;font-weight:900}.community-head b{color:#7ff0b8;font-size:.62rem}
.community-row{display:grid;grid-template-columns:52px 1fr;gap:14px;align-items:center;padding:17px 22px;border-bottom:1px solid #eee7f3}.community-row:last-child{border-bottom:0}.community-row>i{color:var(--purple3);font-size:.7rem;font-style:normal;font-weight:900}.community-row p{display:grid;gap:3px}.community-row p b{color:#2c1651;font-size:.78rem}.community-row p span{color:#746680;font-size:.72rem}

@media(max-width:779px){
  .intro-video-section{padding-top:82px}.video-section-inner{width:min(100% - 28px,980px)}.video-section-inner .lead{margin-bottom:22px}.video-channel{font-size:.66rem}.video-channel-dark{justify-content:flex-start;padding:11px 12px}.video-frame{border-radius:14px}.course-demo-frame{border-radius:0}
  .system-stack{width:min(100% - 28px,980px);gap:20px;margin-top:30px}
  .system-showcase{padding:23px 18px;border-radius:22px}
  .system-copy{min-height:0;padding-right:54px}
  .system-copy .num{top:-5px;font-size:3.6rem}
  .system-copy h3{padding-right:5px;font-size:1.25rem}
  .system-copy>p:not(.tag){font-size:.82rem;line-height:1.6}
  .system-product-media{margin-top:22px;border-radius:16px}
  .system-product-media>figcaption{padding:11px 10px;font-size:.63rem}
  .mock-browser{margin:14px}
  .mock-course{grid-template-columns:1fr;min-height:280px}.mock-video{min-height:210px}.mock-lessons{display:none}
  .vocab-preview,.solution-preview,.community-preview{padding:16px 14px 0}
  .vocab-dashboard{padding:16px}.vocab-word{margin:16px 0;padding:21px 12px}
  .exam-preview{min-height:310px;padding:20px 8px 0}.exam-sheets{height:275px}.exam-sheet{width:68%;height:235px;padding:20px 12px}.exam-sheet.back{left:3%}.exam-sheet.front{right:3%}.exam-sheet b{font-size:1.05rem}
  .solution-book{grid-template-columns:38px 1fr;min-height:300px}.solution-page{padding:24px 18px}.solution-page>b{font-size:1rem}.solution-page p{font-size:.7rem}
  .listening-preview,.grammar-preview{padding:16px 14px}.listening-board,.grammar-board{grid-template-columns:1fr;gap:15px;padding:16px}.day-counter{grid-template-columns:auto auto auto;gap:10px;padding:15px}.day-counter b{font-size:3.5rem}.sound-wave{justify-content:center}.listening-plan{text-align:center}.grammar-count{padding:18px}.grammar-count b{font-size:3.4rem}.grammar-flow{grid-template-columns:1fr;gap:7px}.grammar-flow i{transform:rotate(90deg);text-align:center}.grammar-flow span{min-height:56px}
  .community-head{padding:14px 12px}.community-head b{display:none}.community-row{grid-template-columns:42px 1fr;padding:14px 12px}
}

/* v30 — post-payment Zalo invitation */
.zalo-invite{margin-top:18px;padding:20px;border:1px solid #d9c9e8;border-radius:18px;background:linear-gradient(145deg,#fbf8ff,#f2ecfa);text-align:center}
.zalo-invite[hidden]{display:none}
.zalo-invite .eyebrow{margin-bottom:8px}
.zalo-invite h3{color:#30155d;margin-bottom:8px}
.zalo-invite>p:not(.eyebrow){color:var(--muted);font-size:.82rem}
.zalo-group-qr{width:min(100%,260px);margin:16px auto;padding:9px;border:1px solid #e5dced;border-radius:16px;background:#fff}
.zalo-invite .cta{margin-top:16px}

/* V15 — synchronized value stack and bonus pricing */
.price-breakdown{display:grid;gap:8px;margin-top:17px}
.price-breakdown .price-total{margin-top:0}
.price-breakdown .grand-total{border:1px solid #ded0ec;background:#eee5f7}
.price-breakdown .grand-total b{font-size:1rem}
.price-breakdown>small{display:block;padding:2px 4px 0;color:#735f85;font-size:.65rem;line-height:1.5}
@media(max-width:779px){
  .value-list li{align-items:flex-start}
  .value-list li span{max-width:68%;line-height:1.45}
  .bonus-total{margin-top:5px}
}

/* v28 — balanced pain-section heading */
#noi-dau{padding-block:72px 82px}
#noi-dau .pain-head{display:block;max-width:980px;text-align:center}
#noi-dau .pain-head .eyebrow{margin-bottom:14px}
#noi-dau .pain-head h2{max-width:900px;margin:0 auto 18px;font-size:clamp(2rem,3.2vw,3.05rem);line-height:1.16;letter-spacing:-.03em;text-wrap:balance}
#noi-dau .pain-head>.lead{max-width:760px;margin-inline:auto;font-size:1.05rem;line-height:1.75;text-wrap:pretty}
#noi-dau .pain-grid{margin-top:38px}
@media(max-width:779px){
  #noi-dau{padding-block:56px 64px}
  #noi-dau .pain-head{text-align:left}
  #noi-dau .pain-head h2{margin-bottom:15px;font-size:clamp(1.75rem,8vw,2.2rem);line-height:1.2}
  #noi-dau .pain-head>.lead{font-size:.96rem;line-height:1.7}
  #noi-dau .pain-grid{margin-top:28px}
}

/* v29 — full-page layout audit: consistent headings, roadmap rhythm and feedback masonry */
.section h2,.feedback-section h2{text-wrap:balance}
.section .center>h2,.feedback-heading h2{max-width:940px;margin-left:auto;margin-right:auto}
.section .center>.lead{max-width:760px;text-wrap:pretty}

#lo-trinh{padding-block:78px 82px}
#lo-trinh .roadmap-head{display:block;max-width:950px;margin-inline:auto;text-align:center}
#lo-trinh .roadmap-head h2{max-width:900px;margin:0 auto 18px;font-size:clamp(2rem,3.25vw,3.05rem);line-height:1.16;letter-spacing:-.03em}
#lo-trinh .roadmap-head>.lead{max-width:760px;margin-inline:auto;font-size:1.05rem;line-height:1.75;text-wrap:pretty}
#lo-trinh .days{align-items:stretch;margin-top:40px}
#lo-trinh .days article{display:flex;flex-direction:column;min-width:0;box-shadow:0 16px 42px rgba(9,3,24,.16)}
#lo-trinh .days article.featured{transform:none}
#lo-trinh .days .output{margin-top:auto}

@media(min-width:780px){
  .feedback-list{display:block;columns:2;column-gap:26px}
  .feedback-entry,.feedback-entry.phone-shot,.feedback-entry.vertical,.feedback-entry.landscape{display:inline-block;width:100%;margin:0 0 26px;break-inside:avoid;page-break-inside:avoid}
}

@media(max-width:779px){
  #lo-trinh{padding-block:58px 66px}
  #lo-trinh .roadmap-head{text-align:left}
  #lo-trinh .roadmap-head h2{margin-bottom:15px;font-size:clamp(1.75rem,8vw,2.2rem);line-height:1.2}
  #lo-trinh .roadmap-head>.lead{font-size:.96rem;line-height:1.7}
  #lo-trinh .days{margin-top:28px}
  #lo-trinh .days article.featured{order:0}
  .feedback-list{display:grid;columns:auto}
}