/* GATE EE Study Hub — Aura V18. Identity system / non-destructive homepage redesign. */
:root{--navy:#09182d;--ink:#122442;--muted:#5e6a7d;--blue:#2456d8;--soft:#f4f7fc;--line:#e0e7f0;--aura-teal:#12b6b0;--aura-deep:#09182d;--aura-blue:#547eff;--aura-paper:#f6f8fc;--shadow:0 18px 50px rgba(10,27,54,.08)}
body{background:#f9fbff;color:#182945;font-family:Inter,'Segoe UI',ui-sans-serif,system-ui,-apple-system,sans-serif;letter-spacing:-.01em}
.shell{max-width:1250px;width:calc(100% - 68px)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #10b6ac!important;outline-offset:4px}
/* Carefully restrained utility bar and anchored navigation */
.announcement{background:#08172b;position:relative;z-index:31}
.announcement .announcement-inner{min-height:42px}
.announcement .announcement-contact{background:rgba(43,211,196,.14)!important;color:#e3fff9!important;border:1px solid rgba(75,221,211,.33)!important;box-shadow:none!important}
.announcement .announcement-contact strong{color:#d7fff8!important}
.announcement .announcement-note,.announcement .announcement-official{color:#b8cde3}
.site-header{background:rgba(255,255,255,.975)!important;position:sticky;top:0;z-index:40;border-bottom:1px solid #e7ebf2;box-shadow:0 7px 28px rgba(8,27,53,.055)}
.site-header .header-inner{min-height:81px;gap:14px}
.site-header .brand{gap:10px}
.site-header .brand img{width:50px;height:50px;object-fit:contain}
.site-header .brand b{font-weight:850;font-size:24px;letter-spacing:-.055em;color:#0d2441}
.site-header .brand em{color:#008d87}
.site-header .brand small{font-size:10px;letter-spacing:.13em;font-weight:750;color:#758098}
.site-nav{gap:clamp(7px,1.05vw,17px)}
.site-nav>a:not(.header-cta){color:#41516b;font-weight:650;font-size:12px}
.site-nav>a:not(.header-cta):hover{color:#1455c2}
.site-nav .header-cta{background:#153768!important;color:#fff!important;border-radius:12px;padding:11px 16px;box-shadow:none!important}
.site-nav .header-cta:hover{background:#2456d8!important}
/* --- Signature hero: engineering blueprint meets clear academic hierarchy --- */
.hero.aura-hero{position:relative;isolation:isolate;background:#09182d!important;color:#fff;overflow:hidden;border:0}
.aura-hero:before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(circle at 79% 14%,rgba(24,139,189,.20),transparent 30%),radial-gradient(circle at 41% 96%,rgba(8,200,186,.14),transparent 36%),linear-gradient(112deg,#09172b 2%,#10223f 57%,#0d2940 100%)}
.aura-hero:after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background-image:linear-gradient(90deg,rgba(167,204,249,.07) 1px,transparent 1px),linear-gradient(0deg,rgba(167,204,249,.07) 1px,transparent 1px);background-size:70px 70px;mask-image:linear-gradient(to right,transparent,black 25%,black 100%);opacity:.52}
.aura-circuit{position:absolute;pointer-events:none;border-color:rgba(42,192,212,.26);opacity:.45}
.aura-circuit-one{top:8%;right:-28px;width:215px;height:90px;border-left:1px solid;border-bottom:1px solid;border-radius:0 0 0 14px;transform:rotate(0deg)}
.aura-circuit-one:after{content:"";position:absolute;bottom:-4px;left:-4px;width:8px;height:8px;background:#34cec8;border-radius:50%;box-shadow:0 0 12px #34cec8}
.aura-circuit-two{bottom:8%;left:-30px;width:140px;height:160px;border-right:1px solid;border-top:1px solid;border-radius:0 14px 0 0}
.aura-hero-shell{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(340px,.82fr);gap:clamp(32px,5vw,72px);align-items:center;padding-top:clamp(70px,7vw,108px);padding-bottom:clamp(76px,8vw,112px);position:relative;z-index:2}
.aura-hero-content{position:relative;z-index:2;max-width:720px}
.aura-pill{display:inline-flex;align-items:center;gap:10px;border:1px solid rgba(76,198,201,.35);background:rgba(26,88,115,.3);border-radius:999px;color:#b4e6e8;padding:9px 14px;font-size:11px;font-weight:800;letter-spacing:.12em;line-height:1.35}
.aura-pill-dot{width:7px;height:7px;display:inline-block;background:#44dfc9;border-radius:50%;box-shadow:0 0 0 5px rgba(68,223,201,.1)}
.aura-hero h1{font-weight:850;max-width:750px;letter-spacing:-.061em;line-height:1.105;font-size:clamp(43px,3.85vw,60px);margin:28px 0 22px;color:#fff}
.aura-hero h1 span{color:#6adcd1}
.aura-hero h1 em{font-weight:750;font-style:normal;color:#a9c1ff}
.aura-lead{max-width:640px;font-size:clamp(15px,1.2vw,17px);line-height:1.78;color:#c9d8e8;margin:0}
.aura-hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.aura-hero-actions a{display:inline-flex;align-items:center;justify-content:center;gap:13px;text-decoration:none;min-height:51px;padding:13px 21px;border-radius:12px;font-size:14px;font-weight:780;transition:transform .2s ease,background .2s ease,border-color .2s ease}
.aura-hero-actions a:hover{transform:translateY(-2px)}
.aura-primary{background:#57dfce;color:#0a2534;border:1px solid #74f1df;box-shadow:0 10px 26px rgba(34,201,183,.18)}
.aura-primary:hover{background:#8cf1e4}
.aura-secondary{background:rgba(255,255,255,.045);color:#fff;border:1px solid rgba(186,210,235,.42)}
.aura-secondary:hover{background:rgba(255,255,255,.12);border-color:#c1e5ff}
.aura-hero-facts{display:flex;align-items:center;gap:18px;margin-top:39px;flex-wrap:wrap;font-size:12px;color:#c1d1df}
.aura-hero-facts span{display:inline-flex;gap:7px;align-items:baseline}
.aura-hero-facts b{font-size:21px;color:#fff;letter-spacing:-.04em}
.aura-hero-facts i{width:1px;height:27px;background:#395374;flex-shrink:0}
.aura-hero-independent{font-size:11px;color:#8ba5bf;margin-top:21px;line-height:1.5}
.aura-hero-visual{min-width:0;position:relative}
.aura-technical-illustration{position:relative;margin:0 0 -21px;z-index:1;border:1px solid rgba(106,177,218,.23);border-radius:19px 19px 0 0;background:rgba(8,30,55,.8);padding:14px 16px 23px;box-shadow:0 18px 45px rgba(0,0,0,.11);overflow:hidden}
.aura-technical-illustration>svg{width:100%;height:auto;display:block}
.aura-ill-label{display:flex;align-items:center;gap:10px;justify-content:flex-end;color:#93b4cb;font-size:10px;font-weight:750;letter-spacing:.18em;margin:4px 3px}
.aura-label-led{height:6px;width:6px;background:#49e1d0;box-shadow:0 0 15px #49e1d0;border-radius:50%}
.aura-timer-wrap{position:relative;z-index:2;max-width:560px;margin-inline:auto}
.aura-hero .focus-desk{width:100%;border:1px solid rgba(240,247,255,.9)!important;background:linear-gradient(140deg,#fff,#f5f9fc)!important;border-radius:23px;padding:25px 27px 23px;box-shadow:0 32px 60px rgba(0,6,22,.30)!important;transform:none!important;color:#1a3150}
.aura-hero .focus-desk h2{font-size:26px;line-height:1.2;margin:16px 0 14px;color:#162841}
.aura-hero .desk-heading .eyebrow{color:#087f86}
.aura-hero .timer-display{font-size:clamp(54px,6vw,82px);color:#102742}
.aura-hero .focus-desk .button-navy{background:#153768;border-radius:10px}
.aura-hero .focus-desk #timer-status{font-size:13px;line-height:1.5}
.aura-hero-bottom-glow{position:absolute;bottom:-1px;left:0;right:0;height:5px;background:linear-gradient(90deg,transparent 0%,#32c6c2 34%,#5079d9 72%,transparent 100%);opacity:.65}
/* brief command strip: actionable, not a second hero */
.aura-command{background:#fff;border-bottom:1px solid #e5eaf2}
.aura-command-shell{display:flex;align-items:center;justify-content:space-between;gap:30px;padding-block:27px}
.aura-mini-kicker{color:#087f80;font-size:11px;font-weight:850;letter-spacing:.13em}
.aura-command-copy h2{font-size:24px;line-height:1.2;letter-spacing:-.04em;margin:7px 0 5px;color:#142a48}
.aura-command-copy p{font-size:13px;color:#647287;margin:0;max-width:700px;line-height:1.6}
.aura-command-actions{display:flex;flex-wrap:wrap;gap:9px;flex-shrink:0}
.aura-command-actions a{display:inline-flex;align-items:center;justify-content:center;padding:12px 16px;font-weight:750;font-size:13px;border-radius:11px;text-decoration:none;min-height:44px}
.aura-command-main{background:#183969;color:#fff}
.aura-command-main:hover{background:#2456d8}
.aura-command-minor{background:#ecf1fb;color:#22416e;border:1px solid #dce6f3}
.aura-command-minor:hover{background:#dfeaf8}
/* Four purpose-built learning pathways */
.aura-pathways{background:#f7f9fd;padding:80px 0 87px;border-bottom:1px solid #e5eaf2}
.aura-pathways-title{margin:0 0 29px;max-width:750px}
.aura-pathways-title h2{font-size:clamp(30px,3.3vw,46px);line-height:1.15;letter-spacing:-.057em;margin:10px 0;color:#122442}
.aura-pathways-title h2 em{color:#3d5eac;font-style:normal}
.aura-pathways-title p{font-size:15px;color:#65738a;margin:0}
.aura-pathways-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}
.aura-path{display:flex;flex-direction:column;align-items:flex-start;gap:12px;text-decoration:none;color:#182945;background:#fff;border:1px solid #e0e8f2;border-radius:18px;padding:27px 23px 23px;min-height:289px;position:relative;overflow:hidden;box-shadow:0 7px 25px rgba(12,35,72,.025);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.aura-path:after{position:absolute;content:"";height:3px;width:100%;left:0;top:0;background:linear-gradient(90deg,#1cb4b0,#6584df);transform:scaleX(0);transform-origin:left;transition:transform .23s ease}
.aura-path:hover{transform:translateY(-5px);box-shadow:0 22px 45px rgba(12,35,72,.10);border-color:#aec9df}
.aura-path:hover:after{transform:scaleX(1)}
.aura-path-icon{display:grid;place-items:center;width:49px;height:49px;border-radius:14px;background:#eaf8f6;color:#0b8580}
.aura-path:nth-child(2) .aura-path-icon{background:#eaf0ff;color:#2456d8}
.aura-path:nth-child(3) .aura-path-icon{background:#eef1fd;color:#6059bb}
.aura-path:nth-child(4) .aura-path-icon{background:#f9f1e6;color:#976a27}
.aura-path-icon svg{width:26px;height:26px;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;fill:none}
.aura-path-index{color:#688096;font-size:10px;font-weight:850;letter-spacing:.16em;margin-top:2px}
.aura-path strong{font-size:19px;letter-spacing:-.037em;line-height:1.24;color:#162a48}
.aura-path small{font-size:13px;color:#68768b;line-height:1.65}
.aura-path-link{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;font-size:12px;color:#0a7e7c;font-weight:800;margin-top:auto;padding-top:12px;border-top:1px solid #ecf0f5}
/* Existing interactive subject system, refined not replaced */
.aura-syllabus{background:#fff;padding-block:92px}
.aura-syllabus .section-header{align-items:center}
.aura-syllabus .section-header h2{max-width:790px;font-size:clamp(34px,3.25vw,48px);line-height:1.12;letter-spacing:-.055em;color:#102641}
.aura-syllabus .section-header h2 span{color:#168a88}
.aura-syllabus .section-header p{max-width:770px;line-height:1.75;color:#647489}
.aura-syllabus .learning-overview{border:1px solid #e0e9ee;border-radius:17px;background:linear-gradient(108deg,#f2fbfa,#f8faff);box-shadow:none}
.aura-syllabus .learning-stat strong{color:#087f80}
.aura-syllabus .subject-card{border:1px solid #e0e8f1;border-radius:17px;background:#fff;box-shadow:0 3px 13px rgba(21,49,87,.025);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}
.aura-syllabus .subject-card:hover{transform:translateY(-2px);border-color:#aad5d2;box-shadow:0 14px 32px rgba(22,68,95,.09)}
.aura-syllabus .subject-card h3{color:#172b48}
.aura-syllabus .subject-card::before{background:#2caab3!important}
.aura-syllabus .subject-card[data-category='electronics']::before{background:#5175dc!important}
.aura-syllabus .search-panel{border-radius:17px;background:#f6f9fd;border:1px solid #e4ebf3}
.aura-syllabus .filter-chip.active{background:#173e62;color:#fff;border-color:#173e62}
/* The learning loop becomes a memorable signature section */
.aura-journey{position:relative;overflow:hidden;background:#0c1d36;padding:86px 0;color:#fff}
.aura-journey:before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 80% 40%,rgba(28,166,187,.15),transparent 50%),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:auto,72px 72px}
.aura-journey-shell{position:relative;display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:clamp(28px,5vw,70px);align-items:center}
.aura-journey .aura-mini-kicker{color:#83e6d9}
.aura-journey-intro h2{color:#fff;font-size:clamp(30px,2.8vw,39px);letter-spacing:-.053em;line-height:1.2;margin:10px 0 16px}
.aura-journey-intro h2 em{color:#8ce0d6;font-style:normal}
.aura-journey-intro p{color:#b5cadb;line-height:1.73;font-size:14px}
.aura-journey-intro>a{display:inline-flex;color:#90e3db;border-bottom:1px solid rgba(143,222,212,.5);text-decoration:none;font-weight:750;font-size:13px;padding:10px 0 5px;margin-top:7px}
.aura-journey-steps{padding:0;margin:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;list-style:none;align-items:stretch}
.aura-journey-steps li{position:relative;padding:20px 13px 17px;border:1px solid rgba(178,206,230,.19);background:rgba(255,255,255,.045);border-radius:13px;min-width:0;display:flex;flex-direction:column;gap:12px}
.aura-journey-steps li:before{content:"";position:absolute;left:19px;right:19px;top:50px;height:1px;background:linear-gradient(90deg,rgba(53,225,206,.50),transparent)}
.aura-journey-steps li>span{display:flex;width:30px;height:30px;align-items:center;justify-content:center;border-radius:9px;background:#154b64;color:#81f1df;font-size:11px;font-weight:850}
.aura-journey-steps li>b{color:#fff;font-size:15px;letter-spacing:-.025em;margin-top:7px}
.aura-journey-steps li>small{color:#adc3d8;font-size:11px;line-height:1.6}
/* Lower sections recast in one restrained typographic system */
.section{scroll-margin-top:100px}
.section h2,.join-copy h2{font-weight:800;letter-spacing:-.05em}
.section h2 span{color:#1a8c88}
.section .eyebrow{color:#087f80}
.section-tinted{background:#f6f9fc;border-color:#e3eaf2}
#books{padding-block:82px}
#resources{background:#fff}
#resources .resource-card{border-radius:19px;border-color:#dfe8f1;box-shadow:0 9px 22px rgba(10,39,73,.035)}
#resources .resource-card:hover{box-shadow:0 22px 38px rgba(10,39,73,.08)}
#original-lessons{background:#f6f9fc}
#mock-tests{background:#fff}
.plan-section{background:#132946!important}
.plan-section .section-header h2{color:#fff}
.plan-section .section-header h2 span{color:#88e6d7}
.plan-section .eyebrow{color:#98ebda}
#faq{background:#f7f9fc}
#faq .shell{max-width:1050px}
#faq .seo-faq-item{border-radius:14px;border-color:#dfe7f0;padding:5px 22px}
#faq .seo-faq-item summary{color:#213453}
/* A mission that isn't mistaken for a fake success claim */
.aura-mission{background:#eaf4f4;border-top:1px solid #dceae8;border-bottom:1px solid #dceae8;padding:51px 0}
.aura-mission-inner{display:grid;grid-template-columns:92px 1fr auto;gap:30px;align-items:center}
.aura-mission-mark{width:86px;height:86px;display:flex;align-items:center;justify-content:center;background:#103851;color:#a5f0e5;border-radius:18px;font-weight:900;font-size:26px;letter-spacing:-.08em;box-shadow:0 13px 27px rgba(2,51,65,.14)}
.aura-mission-mark span{color:#6edbce;font-size:25px}
.aura-mission h2{font-size:clamp(24px,2.4vw,34px);line-height:1.25;letter-spacing:-.048em;font-weight:800;color:#143247;margin:8px 0 10px;max-width:770px}
.aura-mission p{color:#52707c;font-size:14px;line-height:1.7;margin:0;max-width:790px}
.aura-mission-link{padding:12px 18px;border:1px solid #b8d8d8;background:#fff;border-radius:10px;color:#0c5962;text-decoration:none;white-space:nowrap;font-size:13px;font-weight:800}
.aura-mission-link:hover{background:#f5fffd}
#about{background:#fff}
#about .about-main>p{max-width:680px;color:#5d6b7c;line-height:1.8}
#about .about-main .about-intro{font-size:17px;color:#32435c}
#about .about-aside{background:#f0f7f7;border-top-color:#169995}
#about .guide-tag{color:#087f80}
#about .guide-id .guide-monogram{background:#113c56}
#about .button-contact{background:#e1f5ed;border-color:#a8dfd0;color:#0a655f;box-shadow:none}
#about .button-contact:hover{background:#c8f2e6}
#join{background:linear-gradient(110deg,#102e44,#113b49);color:#fff}
#join .join-copy h2{color:#fff}
#join .join-copy h2 span{color:#8fe6db}
#join .join-copy p{color:#c8dce7}
#join .join-copy .button-hot{background:#62e3d2;color:#0d3241}
#join .join-copy .button-outline{background:transparent;color:#fff;border-color:#7ca6b5}
.footer{background:#08182b!important;color:#b6c8d8}
.footer .footer-brand b{color:#fff}
.footer .footer-brand em{color:#72e1d6}
.footer .footer-main h3{color:#fff}
.footer .footer-main a:not(.brand):hover{color:#7ce9da}
.footer .contact-email-highlight{background:rgba(58,213,193,.12);color:#bcfff2!important;border-color:rgba(74,220,201,.48);box-shadow:none}
.footer .contact-email-highlight:hover{background:rgba(58,213,193,.18);color:#fff!important}
/* No overly promotional entrance animation; motion conveys affordance only */
@media(max-width:1190px){.aura-hero-shell{grid-template-columns:minmax(0,1fr) minmax(320px,.75fr);gap:32px}.aura-hero h1{font-size:clamp(39px,4.4vw,56px)}.aura-path{padding:22px 18px;min-height:295px}.aura-path strong{font-size:17px}.aura-journey-shell{grid-template-columns:1fr;gap:25px}.aura-journey-intro{max-width:620px}.aura-mission-inner{grid-template-columns:76px 1fr}.aura-mission-mark{width:70px;height:70px}.aura-mission-link{grid-column:2;justify-self:start}}
@media(max-width:950px){.shell{width:calc(100% - 46px)}.aura-hero-shell{grid-template-columns:1fr;gap:42px;padding-top:72px;padding-bottom:70px}.aura-hero-content{max-width:790px}.aura-hero h1{font-size:clamp(43px,7vw,65px)}.aura-hero-visual{width:100%;max-width:660px}.aura-pathways-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.aura-path{min-height:245px}.aura-command-shell{align-items:flex-start;flex-direction:column}.aura-command-actions{width:100%}.aura-syllabus{padding-block:75px}.aura-journey-steps{grid-template-columns:repeat(5,minmax(0,1fr))}}
@media(max-width:680px){.shell{width:calc(100% - 34px)}.site-header .header-inner{min-height:72px}.site-header .brand img{width:42px;height:42px}.site-header .brand b{font-size:21px}.site-header .brand small{font-size:9px}.aura-hero-shell{padding-top:43px;padding-bottom:47px;gap:35px}.aura-hero h1{font-size:clamp(35px,9.3vw,49px);line-height:1.13;letter-spacing:-.057em;margin:23px 0 20px}.aura-pill{font-size:9px;letter-spacing:.08em;padding:8px 10px}.aura-lead{font-size:14px;line-height:1.76}.aura-hero-actions{display:grid;grid-template-columns:1fr;gap:10px;margin-top:26px}.aura-hero-actions a{width:100%;min-height:48px;font-size:13px}.aura-hero-facts{gap:8px 12px;margin-top:27px;font-size:10px}.aura-hero-facts b{font-size:17px}.aura-hero-facts i{height:18px}.aura-hero-independent{font-size:10px;margin-top:15px}.aura-technical-illustration{padding:10px 8px 20px}.aura-ill-label{font-size:8px}.aura-hero .focus-desk{padding:20px 18px;border-radius:19px}.aura-hero .focus-desk h2{font-size:23px}.aura-command-shell{padding-block:27px}.aura-command-copy h2{font-size:23px}.aura-command-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}.aura-command-actions a{padding:10px 8px;font-size:11px;text-align:center}.aura-pathways{padding:66px 0}.aura-pathways-title h2{font-size:32px}.aura-pathways-grid{grid-template-columns:1fr;gap:12px}.aura-path{min-height:0;padding:22px;gap:10px}.aura-path strong{font-size:20px}.aura-path-icon{height:45px;width:45px}.aura-syllabus{padding-block:67px}.aura-syllabus .section-header h2{font-size:36px}.aura-journey{padding:64px 0}.aura-journey-steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.aura-journey-steps li{padding:16px;min-height:120px}.aura-journey-steps li:last-child{grid-column:1/-1;min-height:105px}.aura-mission{padding:43px 0}.aura-mission-inner{grid-template-columns:1fr;gap:17px}.aura-mission-mark{width:58px;height:58px;font-size:20px}.aura-mission h2{font-size:27px}.aura-mission-link{grid-column:1}.footer .contact-email-highlight{font-size:12px;overflow-wrap:anywhere;max-width:100%;white-space:normal}.footer .footer-main{gap:26px}.footer .footer-main a{overflow-wrap:anywhere}}
@media(max-width:360px){.aura-hero h1{font-size:34px}.aura-hero-facts{gap:7px}.aura-hero-facts span{gap:4px}.aura-hero-facts b{font-size:16px}.aura-command-actions{grid-template-columns:1fr}.aura-command-actions a{font-size:12px}.aura-pill{font-size:8px}}
@media(prefers-reduced-motion:reduce){.aura-path,.aura-hero-actions a,.aura-path:after{transition:none!important;transform:none!important}html{scroll-behavior:auto}}
/* Eliminate overlay interference on mobile: tools are reachable from the menu. */
.aura-tools-nav{display:none}
body:not(.aura-past-hero):not(.aura-tools-visible) #study-quicktools{opacity:0;pointer-events:none;transform:translateY(10px)}
#study-quicktools{transition:opacity .18s ease,transform .18s ease}
@media(max-width:850px){
 .site-nav .aura-tools-nav{display:block;width:100%;text-align:left;padding:12px;border:0;background:#edf8f6;color:#155658;font-weight:800;border-radius:9px;cursor:pointer;font-size:14px}
 .site-nav .aura-tools-nav:hover{background:#d9f4ee}
}
@media(max-width:680px){
 #study-quicktools{right:13px!important;bottom:calc(82px + env(safe-area-inset-bottom))!important;pointer-events:none}
 #study-quicktools .quicktools-launch{display:none!important}
 #study-quicktools .quicktools-panel:not([hidden]){display:block;pointer-events:auto;max-height:calc(100dvh - 155px);overflow-y:auto}
 body:not(.aura-past-hero):not(.aura-tools-visible) #study-quicktools{opacity:1;transform:none}
}

/* V19: source-paper practice feature, accessible within the V18 aura theme. */
.aura-test-feature{padding-top:25px;padding-bottom:10px}.aura-online-test-strip{display:flex;align-items:center;justify-content:space-between;gap:23px;padding:25px 30px;background:linear-gradient(115deg,#101f3c,#164965);border:1px solid #2c7494;border-radius:21px;color:#fff;box-shadow:0 15px 35px #172f4b13}.aura-online-test-strip strong{display:block;font-size:23px;letter-spacing:-.04em;line-height:1.3;margin:6px 0}.aura-online-test-strip p{font-size:14px;color:#deecf7;margin:0 0 5px;max-width:770px;line-height:1.55}.aura-online-test-strip small{display:block;color:#b9dddc;font-size:11px}.aura-test-tag{font-size:11px;letter-spacing:.13em;font-weight:850;color:#8de4dc}.aura-online-test-strip a{white-space:nowrap;text-decoration:none;color:#0b2842;background:#e1faf6;padding:13px 19px;border-radius:12px;font-weight:850;font-size:13px}.aura-online-test-strip a:hover{background:white;color:#102c52}@media(max-width:740px){.aura-test-feature{padding-top:16px}.aura-online-test-strip{flex-direction:column;align-items:stretch;padding:21px;gap:14px}.aura-online-test-strip strong{font-size:20px}.aura-online-test-strip a{text-align:center}}

/* V20 founder portrait: use the provided photo without retouching the face. */
#about .about-aside{overflow:hidden;min-width:0;}
#about .founder-portrait{position:relative;margin:0 0 27px;border-radius:18px;overflow:hidden;aspect-ratio:4/4.5;background:#dbe8e4;box-shadow:0 13px 26px rgba(8,33,51,.12);}
#about .founder-portrait img{display:block;width:100%;height:100%;object-fit:cover;object-position:center 39%;}
#about .founder-portrait::after{content:"";position:absolute;inset:auto 0 0;height:35%;background:linear-gradient(transparent,rgba(4,16,32,.85));pointer-events:none;}
#about .founder-portrait figcaption{position:absolute;z-index:1;bottom:0;left:0;right:0;display:flex;flex-direction:column;gap:3px;color:#fff;padding:20px 22px;text-shadow:0 1px 3px rgba(0,0,0,.3);}
#about .founder-portrait figcaption strong{font-size:19px;font-weight:800;line-height:1.3;color:#fff;}
#about .founder-portrait figcaption span{color:#e8f8f6;font-size:12.5px;line-height:1.45;letter-spacing:.015em;}
#about .founder-portrait + .guide-tag{margin-top:10px;}
#about .about-aside blockquote{font-size:clamp(22px,2vw,30px);}
@media(max-width:850px){#about .founder-portrait{width:min(100%,430px);margin-left:auto;margin-right:auto;aspect-ratio:4/4.4;}#about .about-aside{width:100%;max-width:650px;margin-inline:auto;}}
@media(max-width:600px){#about .founder-portrait{width:100%;max-width:380px;border-radius:15px;margin-bottom:23px;}#about .founder-portrait figcaption{padding:18px;}#about .founder-portrait figcaption strong{font-size:18px;}#about .about-aside blockquote{font-size:25px;}}