/* HT Deutsch · khung chung cho Ôn tập & Lộ trình */
:root{--neon:#5EEAD4;--pl:#9D8CFF;--pink:#FF7AA8;--ok:#5EEAD4;--bad:#FF5C6E;--hot:#FFB347;--der:#7FD0FF;--die:#FF6F91;--das:#5EEAD4}
body{min-height:100vh;overflow-x:hidden}
.pp-top{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px max(16px,env(safe-area-inset-left));background:rgba(5,7,20,.55);backdrop-filter:blur(18px) saturate(1.3);-webkit-backdrop-filter:blur(18px) saturate(1.3);border-bottom:1px solid var(--line)}
.pp-brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none}
.pp-brand .sun{width:32px;height:32px;border-radius:50%;background:radial-gradient(circle at 34% 30%,#FFF3C8 0,#FFB347 38%,#E0661A 72%,#7A2E05 100%);box-shadow:0 0 22px rgba(255,179,71,.6),0 0 60px rgba(255,120,40,.25);flex:none}
.pp-brand b{display:block;font-family:var(--f-d);font-size:18px;line-height:1.05;letter-spacing:-.01em}
.pp-brand small{display:block;font-size:11px;color:var(--ink3);margin-top:2px}
.pp-nav{display:flex;gap:2px;flex-wrap:wrap;padding:3px;border-radius:999px;background:rgba(255,255,255,.04);border:1px solid var(--line)}
.pp-nav a{padding:8px 13px;border-radius:999px;color:var(--ink2);text-decoration:none;font-weight:600;font-size:13.5px;white-space:nowrap}
.pp-nav a:hover{background:rgba(255,255,255,.07);color:#fff}
.pp-nav a[aria-current="page"]{background:linear-gradient(90deg,rgba(94,234,212,.22),rgba(157,140,255,.22));color:#fff;box-shadow:inset 0 0 0 1px rgba(94,234,212,.4)}
@media (max-width:760px){.pp-nav{overflow-x:auto;flex-wrap:nowrap;max-width:62vw;scrollbar-width:none}.pp-nav::-webkit-scrollbar{display:none}.pp-brand small{display:none}}
.pp-wrap{width:min(1120px,calc(100% - 32px));margin:0 auto}
.pp-kick{color:var(--teal);font-size:14px;font-weight:600;margin:0;display:flex;align-items:center;gap:8px}
.pp-kick::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--teal),transparent)}
.pp-lead{font-size:17px;color:var(--ink2);max-width:60ch}
.pp-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:18px}
.pp-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:999px;border:1px solid var(--line2);background:rgba(255,255,255,.05);color:#fff;font:700 14.5px var(--f-b);cursor:pointer;text-decoration:none;transition:transform .12s,border-color .15s,box-shadow .2s}
.pp-btn:hover{border-color:var(--teal);color:#fff;box-shadow:0 0 0 1px rgba(94,234,212,.25)}
.pp-btn:active{transform:scale(.97)}
.pp-btn.main{border:0;background:linear-gradient(90deg,var(--teal),var(--sky));color:#05060f;box-shadow:0 14px 40px -14px var(--teal)}
.pp-btn.gold{border:0;background:linear-gradient(90deg,#FFD37A,var(--amber));color:#2a1604;box-shadow:0 14px 40px -14px var(--amber)}
.pp-btn.big{min-height:56px;padding:0 30px;font-size:16.5px}
.pp-btn:disabled{opacity:.45;cursor:default;transform:none}
.pp-ic{width:42px;height:42px;border-radius:50%;border:1px solid var(--line2);background:rgba(255,255,255,.05);color:#fff;font-size:16px;cursor:pointer;flex:none}
.pp-chip{display:inline-block;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.06);color:#fff;font-weight:700;font-size:13px}
.pp-sec-h{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:44px 0 14px}
.pp-sec-h h2{font-size:22px;margin:0}
.pp-sec-h small{color:var(--ink3);font-size:13px}
.pp-seg{display:inline-flex;flex-wrap:wrap;gap:4px;padding:4px;border-radius:999px;background:rgba(5,8,22,.6);border:1px solid var(--line)}
.pp-seg button{min-height:38px;padding:0 14px;border-radius:999px;border:0;background:transparent;color:var(--ink2);font:700 13.5px var(--f-b);cursor:pointer}
.pp-seg button[aria-pressed="true"]{background:linear-gradient(90deg,#FFD37A,var(--amber));color:#2a1604}
.pp-foot{text-align:center;color:var(--ink3);font-size:13px;padding:50px 0 40px}

/* ===== Ôn tập ===== */
.rv-hero{display:grid;grid-template-columns:auto 1fr;gap:40px;align-items:center;padding:46px 0 10px}
.rv-hero h1{font-family:var(--f-d);font-weight:700;color:#fff;font-size:clamp(40px,7vw,72px);line-height:1;margin:12px 0 0;letter-spacing:-.02em}
.rv-ring{position:relative;width:min(240px,62vw);aspect-ratio:1}
.rv-ring svg{width:100%;height:100%;transform:rotate(-90deg);filter:drop-shadow(0 0 30px rgba(94,234,212,.35))}
.rv-ring circle{fill:none;stroke-width:9;stroke-linecap:round}
.rv-ring .tr{stroke:rgba(255,255,255,.07)}
.rv-ring .fg{stroke:url(#rg);stroke-dasharray:326.7;stroke-dashoffset:326.7;transition:stroke-dashoffset 1s cubic-bezier(.2,.8,.2,1)}
.rv-ring-in{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.rv-ring-in b{font-family:var(--f-d);font-weight:700;color:#fff;font-size:clamp(54px,12vw,80px);line-height:1}
.rv-ring-in small{color:var(--ink3);font-weight:700;margin-top:4px}
.rv-streak{display:inline-flex;align-items:center;gap:6px;padding:10px 16px;border-radius:999px;background:rgba(255,179,71,.12);border:1px solid rgba(255,179,71,.35);color:#FFD2B0;font-weight:800}
.rv-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:34px}
.rv-stats div{padding:18px;border-radius:20px;background:rgba(16,24,47,.85);border:1px solid var(--line)}
.rv-stats b{display:block;font-family:var(--f-d);color:#fff;font-size:34px;line-height:1.1}
.rv-stats small{color:var(--ink3);font-size:13px}
.rv-src{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.rv-card{--a:#5EEAD4;position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:22px;border-radius:24px;border:1px solid rgba(255,255,255,.08);background:radial-gradient(120% 100% at 100% 0%,color-mix(in srgb,var(--a) 18%,transparent),transparent 60%),linear-gradient(170deg,#161C42,#0B1030);overflow:hidden}
.rv-card.c1{--a:#FFB347}.rv-card.c2{--a:#FF7AA8}.rv-card.c3{--a:#5EEAD4}
.rv-card .ic{font-size:30px}
.rv-card h3{margin:0;font-family:var(--f-d);color:#fff;font-size:21px;line-height:1.2}
.rv-card p{margin:0;font-size:14.5px;line-height:1.55;flex:1}
.rv-heat{display:grid;grid-auto-flow:column;grid-template-rows:repeat(7,1fr);gap:4px;padding:18px;border-radius:20px;background:rgba(16,24,47,.85);border:1px solid var(--line);overflow-x:auto}
.rv-heat i{width:14px;height:14px;border-radius:4px;background:rgba(255,255,255,.05)}
.rv-heat i.l1{background:rgba(94,234,212,.25)}.rv-heat i.l2{background:rgba(94,234,212,.5)}.rv-heat i.l3{background:rgba(157,140,255,.8)}.rv-heat i.l4{background:#FF7AA8;box-shadow:0 0 10px rgba(255,122,168,.6)}
.rv-heat i.today{outline:2px solid var(--gold);outline-offset:1px}
.rv-goal{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:40px;padding:22px 24px;border-radius:22px;background:rgba(16,24,47,.85);border:1px solid var(--line)}
.rv-goal h2{margin:0;font-family:var(--f-d);color:#fff;font-size:22px}
.rv-goal p{margin:4px 0 0;font-size:14.5px}
.rv-up{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:10px}
.rv-up div{display:flex;justify-content:space-between;gap:10px;padding:12px 16px;border-radius:14px;background:rgba(16,24,47,.7);border:1px solid var(--line);font-size:14.5px}
.rv-up b{color:#fff}
.rv-up small{color:var(--ink3);white-space:nowrap}
.rv-empty{padding:18px;border-radius:16px;border:1px dashed var(--line2);color:var(--ink3);text-align:center}

.rv-stage{position:fixed;inset:0;z-index:50;display:flex;flex-direction:column;padding:max(12px,env(safe-area-inset-top)) max(14px,env(safe-area-inset-right)) max(14px,env(safe-area-inset-bottom)) max(14px,env(safe-area-inset-left));background:radial-gradient(120% 70% at 50% 0%,rgba(60,40,120,.45),transparent 60%),#060918}
.rv-bar{display:flex;align-items:center;gap:14px;width:min(680px,100%);margin:0 auto;color:var(--ink3);font-weight:800;font-variant-numeric:tabular-nums}
.rv-prog{flex:1;height:8px;border-radius:9px;background:rgba(255,255,255,.08);overflow:hidden}
.rv-prog i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--neon),var(--pl));border-radius:9px;transition:width .4s}
.rv-play{flex:1;display:flex;flex-direction:column;justify-content:center;width:min(680px,100%);margin:0 auto;min-height:0}
.rv-flip{perspective:1400px}
.rv-cardx{position:relative;height:min(400px,56vh);min-height:300px;cursor:pointer;transform-style:preserve-3d;transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.rv-cardx.flip{transform:rotateY(180deg)}
.rv-face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:28px;border-radius:28px;border:1px solid rgba(150,170,255,.2);background:radial-gradient(120% 90% at 50% 0%,color-mix(in srgb,var(--kc,#5EEAD4) 16%,transparent),transparent 65%),linear-gradient(170deg,#161f45,#0c1230);box-shadow:0 30px 80px rgba(0,0,0,.5)}
.rv-face:before{content:"";position:absolute;left:24px;right:24px;top:0;height:4px;border-radius:0 0 6px 6px;background:var(--kc,#5EEAD4)}
.rv-back{transform:rotateY(180deg)}
.rv-tag{position:absolute;top:18px;left:20px;font-size:12px;font-weight:800;color:var(--ink3);letter-spacing:.08em}
.rv-say{position:absolute;top:14px;right:14px;width:46px;height:46px;border-radius:50%;border:1px solid var(--line2);background:rgba(255,255,255,.04);color:#fff;cursor:pointer;font-size:18px;z-index:2}
.rv-w{font-weight:900;color:#fff;font-size:clamp(32px,8.5vw,56px);line-height:1.1;letter-spacing:-.01em;overflow-wrap:anywhere}
.rv-w em{font-style:normal;color:var(--kc)}
.rv-w .L{text-decoration:underline;text-decoration-color:var(--pink);text-decoration-thickness:3px;text-underline-offset:7px;text-decoration-skip-ink:none}
.rv-w .S{position:relative}.rv-w .S:after{content:"";position:absolute;left:50%;bottom:-7px;width:7px;height:7px;margin-left:-3.5px;border-radius:50%;background:var(--pink)}
.rv-f{margin-top:14px;color:var(--ink3);font-size:15.5px}
.rv-m{font-family:var(--f-d);font-weight:600;color:#fff;font-size:clamp(26px,6vw,38px);line-height:1.25}
.rv-ex{margin-top:20px;padding-top:16px;border-top:1px solid rgba(150,170,255,.15);max-width:480px}
.rv-ex p{margin:0;color:#fff;font-size:17px}
.rv-ex small{display:block;margin-top:4px;color:var(--ink3);font-style:italic;font-size:15px}
.rv-hint{position:absolute;bottom:16px;left:0;right:0;color:var(--ink3);font-size:13px}
.rv-grades{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:18px}
.rv-g{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-height:68px;border-radius:18px;border:1.5px solid var(--c);background:color-mix(in srgb,var(--c) 12%,#0B1030);color:#fff;font:800 16px var(--f-b);cursor:pointer;transition:transform .08s}
.rv-g:active{transform:scale(.96)}
.rv-g small{font-size:12px;font-weight:700;color:var(--ink3)}
.rv-g.q0{--c:#FF5C6E}.rv-g.q3{--c:#FFB347}.rv-g.q4{--c:#5EEAD4}.rv-g.q5{--c:#5EEAD4}
.rv-showbtn{margin-top:18px;width:100%}
.rv-done{text-align:center}
.rv-done .big{font-family:var(--f-d);font-weight:700;color:#fff;font-size:clamp(60px,16vw,110px);line-height:1;text-shadow:0 0 50px rgba(94,234,212,.45)}
.rv-done h2{font-family:var(--f-d);color:#fff;font-size:30px;margin:8px 0}

@media (max-width:820px){
 .rv-hero{grid-template-columns:1fr;justify-items:center;text-align:center;gap:22px;padding-top:28px}
 .rv-hero .pp-row{justify-content:center}.pp-lead{margin-left:auto;margin-right:auto}
 .rv-stats{grid-template-columns:repeat(2,1fr)}
 .rv-src{grid-template-columns:1fr}
 .pp-nav a{padding:8px 10px;font-size:13px}
 .pp-brand small{display:none}
 .rv-grades{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:820px){
 .pp-top{gap:10px;padding:8px max(12px,env(safe-area-inset-left))}
 .pp-nav{flex:1;min-width:0;flex-wrap:nowrap;justify-content:flex-start;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:none;-webkit-mask-image:linear-gradient(90deg,#000 88%,transparent);mask-image:linear-gradient(90deg,#000 88%,transparent);padding-right:18px}
 .pp-nav::-webkit-scrollbar{display:none}
 .pp-nav a{flex:none;white-space:nowrap}
}
@media (max-width:520px){.pp-brand>span:not(.sun){display:none}.pp-brand .sun{width:28px;height:28px}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ===== Lộ trình 90 ngày ===== */
.lt-hero{display:grid;grid-template-columns:1.3fr 1fr;gap:36px;align-items:center;padding:46px 0 10px}
.lt-hero h1{font-family:var(--f-d);font-weight:700;color:#fff;font-size:clamp(40px,6.6vw,70px);line-height:1.02;margin:12px 0 0;letter-spacing:-.02em}
.lt-hero h1 em{font-style:normal;background:linear-gradient(90deg,#7FD0FF,#5EEAD4 35%,#9D8CFF 65%,#FF7AA8);-webkit-background-clip:text;background-clip:text;color:transparent}
.lt-today-card{--c:#7FD0FF;position:relative;padding:28px;border-radius:28px;border:1px solid color-mix(in srgb,var(--c) 45%,transparent);background:radial-gradient(130% 120% at 100% 0%,color-mix(in srgb,var(--c) 28%,transparent),transparent 60%),linear-gradient(170deg,#161f45,#0B1030);box-shadow:0 30px 80px -30px color-mix(in srgb,var(--c) 60%,transparent);overflow:hidden}
.lt-today-card:after{content:"";position:absolute;right:-60px;top:-60px;width:200px;height:200px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#fff,var(--c) 35%,transparent 70%);opacity:.35}
.lt-today-card small{display:block;color:var(--ink3);font-weight:700;letter-spacing:.12em;font-size:12px}
.lt-today-card b{display:block;font-family:var(--f-d);font-weight:700;color:#fff;font-size:clamp(52px,9vw,84px);line-height:1;margin:8px 0}
.lt-today-card span{display:block;color:#fff;font-weight:700;font-size:16px}
.lt-today-card em{display:block;font-style:normal;color:var(--ink3);font-size:13.5px;margin-top:8px}
.lt-bar{height:8px;border-radius:9px;background:rgba(255,255,255,.08);overflow:hidden;margin-top:14px}
.lt-bar i{display:block;height:100%;width:0;border-radius:9px;background:linear-gradient(90deg,var(--c,#5EEAD4),#fff);transition:width .8s cubic-bezier(.2,.8,.2,1)}
.lt-phases{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:34px}
.lt-ph{--c:#7FD0FF;position:relative;padding:18px;border-radius:22px;background:rgba(16,24,47,.85);border:1px solid var(--line);overflow:hidden}
.lt-ph.on{border-color:color-mix(in srgb,var(--c) 70%,transparent);background:radial-gradient(120% 100% at 100% 0%,color-mix(in srgb,var(--c) 22%,transparent),transparent 60%),rgba(16,22,52,.7);box-shadow:0 20px 50px -24px var(--c)}
.lt-ph.done{opacity:.8}
.lt-ph .emo{font-size:26px}
.lt-ph small{display:block;margin-top:6px;color:var(--c);font-weight:800;font-size:12px;letter-spacing:.06em}
.lt-ph h3{margin:4px 0 6px;font-family:var(--f-d);color:#fff;font-size:20px}
.lt-ph p{margin:0;font-size:13.5px;line-height:1.5}
.lt-ph em{display:block;font-style:normal;font-size:12.5px;color:var(--ink3);margin-top:6px}
.lt-day{margin-top:40px;padding:26px;border-radius:28px;background:rgba(12,18,40,.9);border:1px solid rgba(150,170,255,.16)}
.lt-day-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap}
.lt-day-head h2{font-family:var(--f-d);color:#fff;font-size:clamp(26px,4vw,36px);margin:6px 0 0}
.lt-goal{margin:6px 0 0;color:var(--ink3);font-size:14.5px}
.lt-day-nav{display:flex;gap:8px;align-items:center}
.lt-day-nav .pp-ic:disabled{opacity:.35}
.lt-tasks{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:10px;--c:#7FD0FF}
.lt-task{display:grid;grid-template-columns:auto auto 1fr auto;gap:14px;align-items:center;padding:14px 16px;border-radius:18px;background:rgba(20,28,60,.6);border:1px solid rgba(150,170,255,.12);transition:border-color .2s,background .2s}
.lt-task.ok{background:rgba(94,234,212,.06);border-color:rgba(94,234,212,.3)}
.lt-task.ok .lt-t b{text-decoration:line-through;text-decoration-color:rgba(255,255,255,.35);color:var(--ink2)}
.lt-check{width:34px;height:34px;border-radius:10px;border:2px solid color-mix(in srgb,var(--c) 60%,#fff 0%);background:transparent;color:#05060f;font-weight:900;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.lt-task.ok .lt-check{background:#5EEAD4;border-color:#5EEAD4}
.lt-ic{font-size:24px}
.lt-t{min-width:0}
.lt-t small{display:block;color:var(--c);font-weight:800;font-size:11.5px;letter-spacing:.08em;text-transform:uppercase}
.lt-t b{display:block;color:#fff;font-size:16px;line-height:1.35;margin:2px 0}
.lt-t span{display:block;color:var(--ink3);font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lt-go{min-height:42px;padding:0 16px;font-size:13.5px}
.lt-celebrate{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:16px;padding:16px 18px;border-radius:18px;background:linear-gradient(90deg,rgba(94,234,212,.14),rgba(94,234,212,.08));border:1px solid rgba(94,234,212,.4)}
.lt-celebrate b{color:#fff;font-size:18px}
.lt-celebrate span{flex:1;min-width:200px}
.lt-map{display:grid;grid-template-columns:repeat(15,1fr);gap:8px;padding:20px;border-radius:24px;background:rgba(16,24,47,.85);border:1px solid var(--line)}
.lt-dot{--c:#7FD0FF;aspect-ratio:1;border-radius:50%;border:1.5px solid color-mix(in srgb,var(--c) 45%,transparent);background:color-mix(in srgb,var(--c) 8%,transparent);color:var(--ink3);font:700 12px var(--f-b);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform .12s}
.lt-dot:hover{transform:scale(1.12);color:#fff}
.lt-dot.part{background:color-mix(in srgb,var(--c) 30%,transparent);color:#fff}
.lt-dot.ok{background:radial-gradient(circle at 35% 30%,#fff,var(--c) 45%,color-mix(in srgb,var(--c) 60%,#000));border-color:var(--c);color:#05060f;box-shadow:0 0 14px color-mix(in srgb,var(--c) 70%,transparent)}
.lt-dot.cur{outline:2px solid var(--gold);outline-offset:3px;animation:lt-pulse 1.6s infinite}
.lt-dot.sel{box-shadow:0 0 0 3px rgba(255,255,255,.5)}
.lt-dot.ms{font-size:15px;color:var(--gold)}
@keyframes lt-pulse{50%{outline-color:rgba(255,179,71,.25)}}
.lt-reset{text-align:center;margin-top:28px}
.lt-reset button{background:none;border:0;color:var(--ink3);text-decoration:underline;cursor:pointer;font:inherit;font-size:13.5px}
.lt-conf{position:fixed;top:-20px;z-index:90;width:9px;height:14px;border-radius:2px;pointer-events:none;animation:lt-fall 2.4s ease-in forwards}
@keyframes lt-fall{to{transform:translateY(105vh) rotate(720deg);opacity:.7}}
@media (max-width:900px){.lt-hero{grid-template-columns:1fr}.lt-phases{grid-template-columns:repeat(2,1fr)}.lt-map{grid-template-columns:repeat(10,1fr)}}
@media (max-width:560px){.lt-task{grid-template-columns:auto 1fr;gap:10px}.lt-ic{display:none}.lt-go{grid-column:1/-1;justify-self:stretch}.lt-day{padding:18px}.lt-map{grid-template-columns:repeat(9,1fr);gap:6px;padding:14px}.lt-phases{grid-template-columns:1fr}}

/* tiêu đề gradient (thiết kế điện ảnh) */
.tk-hero h1,.ar-hero h1,.rv-hero h1,.lt-hero h1,.ab-hero h1,.hc-hero h1,.hl-hero h1,.pp-wrap h1{color:transparent;-webkit-background-clip:text;background-clip:text;background-image:linear-gradient(95deg,#fff 0%,#BFEFFF 45%,#E9D5FF 100%)}
.tk-hero h1 em,.ar-hero h1 em{background-image:linear-gradient(95deg,#FFE3A6,#FFB347 40%,#FF6EA8 70%,#C77DFF);-webkit-background-clip:text;background-clip:text;color:transparent}
.tk-stats b,.ar-stat b,.rv-ring-in b{color:transparent;-webkit-background-clip:text;background-clip:text;background-image:linear-gradient(90deg,#FFE3A6,#FFB347)}
.pp-kick,.tk-kick,.ar-kick{color:#5EFFE4;text-shadow:0 0 14px rgba(94,255,228,.5)}

/* Chặn trang bị kéo ngang trên điện thoại */
html{overflow-x:clip}