:root{--ink:#17385f;--deep:#0d294b;--blue:#275b91;--sky:#7fa8c8;--soft:#dceaf5;--muted:#66788c;--line:#d7e2eb;--paper:#f7fafc;--white:#fff;--pink:#d85e85;--pink-soft:#fff0f5;--green:#62a95f;--green-soft:#eff9ec;--shadow:0 18px 55px rgba(25,57,91,.12);--shadow-soft:0 10px 28px rgba(25,57,91,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:#20374f;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;line-height:1.7;overflow-x:hidden}body:before{content:"";position:fixed;inset:0;z-index:-3;background-image:radial-gradient(rgba(27,71,111,.035) 1px,transparent 1px);background-size:5px 5px}.wash{position:fixed;border-radius:50%;filter:blur(30px);opacity:.28;z-index:-2;pointer-events:none}.wash-a{width:540px;height:540px;background:radial-gradient(circle,#c5dce9,transparent 70%);top:-190px;right:-160px}.wash-b{width:600px;height:600px;background:radial-gradient(circle,#d6e7ef,transparent 70%);bottom:-260px;left:-230px}a{text-decoration:none;color:inherit}.shell{width:min(1160px,calc(100% - 36px));margin:auto}.topbar{height:78px;position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(18px);border-bottom:1px solid rgba(39,91,145,.12);display:flex;align-items:center;justify-content:space-between;padding:0 max(18px,calc((100vw - 1160px)/2))}.brand{display:flex;align-items:center;gap:11px}.brand img{width:50px;height:50px;border-radius:17px;box-shadow:0 5px 15px rgba(22,59,104,.14)}.brand span{display:grid;line-height:1.05}.brand b{font-size:23px;color:var(--deep);letter-spacing:.08em}.brand small{font-size:10px;color:var(--muted);margin-top:5px}.topbar nav{display:flex;gap:10px;align-items:center;font-weight:800}.topbar nav a{padding:10px 18px;border-radius:999px}.login{border:1px solid var(--line);background:#fff}.register{background:linear-gradient(135deg,var(--deep),#326a9d);color:#fff}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:11px;font-weight:900;letter-spacing:.2em;text-transform:uppercase}.hero{min-height:700px;display:grid;grid-template-columns:1.06fr .94fr;align-items:center;gap:56px;padding:60px 0 80px}.hero h1{font-size:70px;line-height:1.12;letter-spacing:-.05em;margin:16px 0 24px;color:var(--deep)}.hero h1 em{font-style:normal;color:var(--blue)}.lead{font-size:18px;color:#5d7183;max-width:650px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.button{display:inline-flex;align-items:center;justify-content:center;padding:13px 21px;border-radius:999px;font-weight:900}.button.primary{background:linear-gradient(135deg,var(--deep),#326a9d);color:#fff;box-shadow:0 12px 25px rgba(18,55,91,.17)}.button.ghost{background:#fff;border:1px solid var(--line);color:var(--deep)}.trust{display:flex;gap:17px;flex-wrap:wrap;margin-top:19px;color:#66788c;font-size:12px;font-weight:800}.hero-phone{display:flex;justify-content:center}.phone-frame{width:365px;background:#fff;border:10px solid #16385f;border-radius:43px;box-shadow:0 30px 65px rgba(15,47,82,.18);overflow:hidden}.phone-status{display:flex;justify-content:space-between;padding:12px 19px 8px;font-size:11px;font-weight:800}.phone-app-head{height:60px;display:grid;grid-template-columns:38px 1fr 25px;align-items:center;gap:8px;padding:0 14px;border-top:1px solid #eef3f6;border-bottom:1px solid #e6eef3}.phone-app-head img{width:34px;height:34px;border-radius:11px}.phone-app-head b{color:var(--deep)}.phone-screen{padding:18px;background:linear-gradient(#f9fbfd,#eef6fa);min-height:480px}.mini-title{display:grid}.mini-title small{color:var(--sky);font-weight:900;letter-spacing:.1em}.mini-title strong{font-size:22px;color:var(--deep)}.person-cards{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:16px 0}.person-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px;box-shadow:var(--shadow-soft);display:grid;gap:3px}.avatar{height:145px;border-radius:13px;background:linear-gradient(145deg,#cbdde8,#7fa8c8)}.a2{background:linear-gradient(145deg,#d9e7ef,#9eb7c9)}.person-card small{color:var(--muted);font-size:10px}.board-mini{display:grid;grid-template-columns:46px 1fr;gap:10px;background:#fff;border:1px solid var(--line);padding:13px;border-radius:17px}.board-mini>span{width:46px;height:46px;border-radius:14px;background:var(--soft);display:grid;place-items:center;font-size:22px}.board-mini div{display:grid}.board-mini small{color:var(--muted);font-size:10px}.section{padding:95px 0}.intro>h2,.section-head h2,.faq-shell>h2,.final-cta h2{font-size:46px;letter-spacing:-.04em;color:var(--deep);margin:11px 0}.intro>p,.section-head p{color:var(--muted);max-width:740px}.feature-showcase{display:grid;gap:28px;margin-top:42px}.feature-big{background:#fff;border:1px solid var(--line);border-radius:30px;padding:34px;box-shadow:var(--shadow-soft);display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:center;overflow:hidden}.feature-big.reverse{grid-template-columns:1.1fr .9fr}.feature-big.reverse .feature-copy{order:2}.feature-copy small{font-size:11px;letter-spacing:.18em;color:var(--sky);font-weight:900}.number{display:inline-block;margin-right:12px;color:var(--blue);font-size:13px;font-weight:900}.feature-copy h3{font-size:39px;margin:9px 0;color:var(--deep)}.feature-copy p{color:var(--muted);font-size:16px}.screen-card{min-height:320px;border-radius:24px;background:linear-gradient(145deg,#eef5f9,#fff);border:1px solid #d8e5ed;padding:22px;box-shadow:inset 0 0 0 7px rgba(255,255,255,.55)}.shot-head{font-weight:900;font-size:20px;color:var(--deep);margin-bottom:16px}.fake-users{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.fake-users span{height:180px;border-radius:15px;background:linear-gradient(145deg,#cedfe9,#88aeca)}.fake-users span:nth-child(2){background:linear-gradient(145deg,#e0e9ef,#9bb2c5)}.fake-users span:nth-child(3){background:linear-gradient(145deg,#d8e8ef,#7da4bf)}.fake-pill{margin-top:14px;padding:10px 14px;border-radius:999px;background:#fff;color:#5f7485;font-size:12px;font-weight:800;border:1px solid var(--line);text-align:center}.shot-note{margin-top:11px;text-align:center;color:#8aa0b1;font-size:11px}.board-shot{display:grid;gap:12px;align-content:center}.board-row{background:#fff;border:1px solid var(--line);border-radius:17px;padding:18px;display:grid}.board-row b{color:var(--deep);font-size:18px}.board-row small{color:var(--muted)}
.omikuji-zone{padding:92px 0;background:linear-gradient(180deg,#f8fbfd,#fff)}.center{text-align:center}.center p{margin-left:auto;margin-right:auto}.omikuji-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:36px}.omikuji-card{border-radius:30px;padding:34px;border:2px solid;box-shadow:var(--shadow-soft);text-align:center;overflow:hidden;position:relative}.omikuji-card:before{content:"";position:absolute;inset:-80px -80px auto auto;width:190px;height:190px;border-radius:50%;opacity:.25}.friend-card{background:linear-gradient(145deg,#f7fff3,#eaf8e5);border-color:#b9deb3;color:#355e33}.friend-card:before{background:#9dd892}.koi-card{background:linear-gradient(145deg,#fff7fa,#ffeaf1);border-color:#f2bdd0;color:#7c3551}.koi-card:before{background:#f4a7c0}.omikuji-kicker{font-size:11px;letter-spacing:.2em;font-weight:900;opacity:.75}.omikuji-card h3{font-size:38px;margin:8px 0 5px}.omikuji-card p{margin:0 0 24px;opacity:.78}.mini-countdown{display:flex;justify-content:center;align-items:center;gap:8px;margin:20px 0}.mini-countdown>div{min-width:60px}.mini-countdown b{font-family:Georgia,"Yu Mincho",serif;font-size:34px}.mini-countdown small{display:block;font-size:9px;opacity:.65}.mini-countdown>span{font-size:23px;opacity:.35}.temp-note{display:block;opacity:.65;margin-top:12px}.share-section{padding:95px 0;background:#fff;border-top:1px solid #e6eef3;border-bottom:1px solid #e6eef3}.share-grid{display:grid;grid-template-columns:1fr .82fr;gap:56px;align-items:center}.share-grid h2{font-size:48px;line-height:1.2;letter-spacing:-.04em;color:var(--deep);margin:12px 0 17px}.share-grid p{color:var(--muted)}.mini-feature-grid{display:grid;gap:10px;margin-top:24px}.mini-feature-grid div{display:grid;padding:14px 16px;background:#f6fafc;border-radius:15px;border:1px solid var(--line)}.mini-feature-grid b{color:var(--deep)}.mini-feature-grid small{color:var(--muted)}.phone-placeholder{min-height:430px;border:8px solid #17385f;border-radius:38px;background:linear-gradient(145deg,#f8fbfd,#e7f1f6);display:grid;place-items:center;text-align:center;padding:35px;box-shadow:var(--shadow)}.phone-placeholder span{color:var(--blue);font-size:11px;letter-spacing:.16em;font-weight:900}.phone-placeholder strong{font-size:25px;color:var(--deep)}.phone-placeholder small{color:var(--muted)}
.flow .section-head{margin-bottom:32px}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.step-card{background:#fff;border:3px solid #d7e4ee;border-radius:24px;padding:26px 22px;box-shadow:var(--shadow-soft);min-height:215px}.step-label{display:inline-flex;padding:6px 11px;border-radius:999px;background:#eaf3f9;color:var(--blue);font-size:12px;font-weight:900;letter-spacing:.12em;margin-bottom:18px}.step-card b{display:block;color:var(--deep);font-size:20px;line-height:1.45}.step-card p{color:var(--muted);font-size:14px;line-height:1.75;margin:12px 0 0}.faq-section{padding:95px 0;background:linear-gradient(180deg,#f8fbfd,#edf5f9)}.faq-shell{max-width:900px}.faq-list{margin-top:35px;border:1px solid var(--line);border-radius:28px;background:#fff;overflow:hidden;box-shadow:var(--shadow-soft)}.faq-list details{border-bottom:1px solid #e3ebf1}.faq-list details:last-child{border-bottom:0}.faq-list summary{list-style:none;padding:23px 30px;font-weight:900;color:var(--deep);cursor:pointer;position:relative;font-size:17px}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"⌄";position:absolute;right:28px;color:#6f8597;font-size:22px}.faq-list details[open] summary:after{content:"⌃"}.faq-list p{padding:0 30px 24px;margin:0;color:var(--muted);max-width:780px}.final-cta{text-align:center;padding:100px 0}.final-cta p{color:var(--muted);margin-bottom:25px}footer{display:flex;justify-content:space-between;gap:20px;padding:28px max(20px,calc((100vw - 1160px)/2));border-top:1px solid var(--line);font-size:12px;color:var(--muted);background:rgba(255,255,255,.8)}
@media(max-width:900px){.hero{grid-template-columns:1fr;text-align:center}.lead{margin-left:auto;margin-right:auto}.hero-actions,.trust{justify-content:center}.feature-big,.feature-big.reverse,.share-grid{grid-template-columns:1fr}.feature-big.reverse .feature-copy{order:0}.omikuji-grid{grid-template-columns:1fr 1fr}.steps{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.shell{width:min(100% - 24px,1160px)}.topbar{height:67px;padding:0 12px}.brand img{width:42px;height:42px;border-radius:14px}.brand b{font-size:20px}.brand small{display:none}.topbar nav a{padding:8px 13px;font-size:12px}.hero{padding:40px 0 55px;gap:35px}.hero h1{font-size:44px}.lead{font-size:15px}.trust{gap:10px;font-size:10px}.phone-frame{width:min(340px,90vw)}.phone-screen{min-height:410px}.avatar{height:120px}.section{padding:68px 0}.intro>h2,.section-head h2,.faq-shell>h2,.final-cta h2{font-size:34px}.feature-big{padding:22px;gap:22px;border-radius:24px}.feature-copy h3{font-size:31px}.screen-card{min-height:270px}.fake-users span{height:135px}.omikuji-zone{padding:64px 0}.omikuji-grid{grid-template-columns:1fr 1fr;gap:10px}.omikuji-card{padding:20px 9px;border-radius:22px}.omikuji-card h3{font-size:25px}.omikuji-card p{font-size:12px;min-height:42px}.mini-countdown{gap:3px}.mini-countdown>div{min-width:37px}.mini-countdown b{font-size:22px}.mini-countdown>span{font-size:15px}.temp-note{font-size:9px}.share-section{padding:68px 0}.share-grid h2{font-size:35px}.phone-placeholder{min-height:340px;border-width:6px}.steps{grid-template-columns:1fr}.step-card{min-height:0;padding:24px 21px;border-width:3px}.step-card b{font-size:20px}.step-card p{font-size:14px}.faq-section{padding:70px 0}.faq-list summary{padding:20px 45px 20px 20px;font-size:15px}.faq-list summary:after{right:18px}.faq-list p{padding:0 20px 20px;font-size:14px}.final-cta{padding:75px 0}footer{display:grid;text-align:center}}

.future-note{margin-top:20px;padding:14px 16px;border-radius:16px;background:#f4f9fc;border:1px solid #d8e7f0;display:grid;gap:4px}.future-note b{font-size:13px;color:var(--blue)}.future-note span{font-size:12px;line-height:1.65;color:var(--muted)}
@media(max-width:620px){.future-note{padding:13px 14px}.future-note b{font-size:12px}.future-note span{font-size:11px}.omikuji-card p{min-height:108px;line-height:1.65}}

/* v4: finalized homepage images supplied by the user */
.hero-visual{display:flex;justify-content:center;align-items:center;min-width:0}
.hero-visual img{display:block;width:100%;max-width:650px;height:auto;border-radius:28px;box-shadow:0 28px 65px rgba(15,47,82,.18);border:1px solid rgba(23,56,95,.1)}
.real-screen{overflow:hidden;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-soft)}
.real-screen img{display:block;width:100%;height:100%;object-fit:cover}
.real-screen-wide{border-radius:24px;aspect-ratio:1.6/1}
.real-screen-wide img{object-position:center}
.real-screen-phone{border-radius:30px;max-width:430px;margin-left:auto;margin-right:auto;box-shadow:var(--shadow)}
.real-screen-phone img{height:auto;object-fit:contain}
.lecture-preview{background:#f7fafc;padding:0}
@media(max-width:900px){.hero-visual img{max-width:720px}.real-screen-phone{max-width:500px}}
@media(max-width:620px){.hero-visual img{border-radius:20px}.real-screen-wide{border-radius:18px;aspect-ratio:1.42/1}.real-screen-phone{border-radius:22px;max-width:100%}}

/* v5: full-screen campus hero + finalized screenshots */
.hero.hero-full{
  width:100%;
  max-width:none;
  min-height:calc(100vh - 78px);
  position:relative;
  display:flex;
  align-items:center;
  padding:72px 0 84px;
  background-image:url('homepage-assets/hero-campus-bg.jpg');
  background-size:cover;
  background-position:center center;
  isolation:isolate;
  overflow:hidden;
}
.hero.hero-full:after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-2;
  background:linear-gradient(180deg,rgba(6,35,72,.04),rgba(6,35,72,.12));
}
.hero-shade{
  position:absolute;
  inset:0;
  z-index:-1;
  background:
    linear-gradient(90deg,rgba(4,33,70,.68) 0%,rgba(4,33,70,.46) 34%,rgba(4,33,70,.13) 62%,rgba(4,33,70,.03) 100%),
    linear-gradient(0deg,rgba(4,33,70,.16),transparent 45%);
}
.hero-inner{
  width:min(1160px,calc(100% - 36px));
  display:flex;
  align-items:center;
  min-height:520px;
}
.hero.hero-full .hero-copy{max-width:760px;text-align:left}
.hero.hero-full .hero-eyebrow{
  color:#fff;
  border:1.5px solid rgba(255,255,255,.9);
  padding:8px 16px;
  border-radius:999px;
  background:rgba(0,42,92,.12);
  text-shadow:0 2px 14px rgba(0,25,60,.22);
}
.hero.hero-full h1{
  color:#fff;
  font-size:clamp(54px,6vw,86px);
  line-height:1.08;
  letter-spacing:-.045em;
  margin:24px 0 24px;
  text-shadow:0 4px 24px rgba(0,27,63,.35);
  font-weight:900;
}
.hero.hero-full h1 em{color:#fff;font-style:normal}
.hero.hero-full .lead{
  color:rgba(255,255,255,.96);
  font-size:19px;
  font-weight:800;
  line-height:1.9;
  max-width:690px;
  text-shadow:0 2px 14px rgba(0,27,63,.36);
}
.hero-primary{
  background:#fff;
  color:#143a66;
  box-shadow:0 12px 32px rgba(0,31,70,.24);
  border:1px solid rgba(255,255,255,.9);
}
.hero-ghost{
  color:#fff;
  background:rgba(8,45,86,.20);
  border:1.5px solid rgba(255,255,255,.8);
  backdrop-filter:blur(7px);
}
.hero.hero-full .trust{color:rgba(255,255,255,.94);text-shadow:0 2px 10px rgba(0,28,61,.3)}

/* Keep the latest supplied UI screenshots fully visible. */
.real-screen-wide{aspect-ratio:16/9;background:#fff}
.real-screen-wide img{object-fit:contain;object-position:center;filter:brightness(1.015) contrast(1.015)}
.real-screen-phone img{object-fit:contain;filter:brightness(1.015) contrast(1.01)}
.lecture-preview{background:#f7fafc}

@media(max-width:900px){
  .hero.hero-full{min-height:calc(100svh - 78px);background-position:57% center;padding:58px 0 70px}
  .hero-inner{min-height:500px}
  .hero.hero-full .hero-copy{max-width:690px}
  .hero-shade{background:linear-gradient(90deg,rgba(4,33,70,.72),rgba(4,33,70,.42) 55%,rgba(4,33,70,.12))}
}
@media(max-width:620px){
  .hero.hero-full{min-height:calc(100svh - 67px);padding:48px 0 58px;background-position:64% center}
  .hero-inner{width:min(100% - 28px,1160px);min-height:520px;align-items:flex-end;padding-bottom:18px}
  .hero-shade{background:linear-gradient(0deg,rgba(3,28,61,.80) 0%,rgba(3,28,61,.52) 47%,rgba(3,28,61,.14) 100%)}
  .hero.hero-full h1{font-size:clamp(43px,12vw,58px);margin:18px 0 17px;line-height:1.11}
  .hero.hero-full .lead{font-size:14px;line-height:1.78;max-width:100%}
  .hero.hero-full .lead br{display:none}
  .hero.hero-full .hero-eyebrow{font-size:9px;padding:6px 11px}
  .hero.hero-full .hero-actions{justify-content:flex-start;margin-top:23px}
  .hero.hero-full .trust{justify-content:flex-start;font-size:9px;gap:8px}
  .hero-primary,.hero-ghost{font-size:12px;padding:11px 16px}
  .real-screen-wide{aspect-ratio:16/9}
}


/* v6: reduce text density from feature cards through campus-board message */
.feature-showcase-clean{margin-top:30px;gap:24px}
.feature-clean{grid-template-columns:.58fr 1.42fr;padding:28px;gap:28px}
.feature-clean.reverse{grid-template-columns:1.42fr .58fr}
.feature-clean .feature-copy h3{font-size:42px;margin:6px 0 9px}
.feature-one-line{font-size:17px!important;line-height:1.65;margin:0!important;color:#526b80!important;font-weight:700}
.compact-note{display:inline-block!important;margin-top:14px!important;padding:7px 11px;border-radius:999px;background:#f1f7fb;color:#537694!important;letter-spacing:0!important;font-size:11px!important;font-weight:800!important}
.omikuji-zone-clean{padding:72px 0}
.compact-heading{margin-bottom:24px}
.compact-heading h2{margin-bottom:5px}
.compact-heading p{margin-top:0}
.compact-omikuji{padding:27px 28px 25px}
.compact-omikuji h3{font-size:34px;margin:6px 0 2px}
.compact-omikuji p{margin:0 0 16px;min-height:0;font-size:14px;font-weight:700}
.coming-soon{display:flex;align-items:center;justify-content:center;min-height:88px;border-radius:18px;background:rgba(255,255,255,.67);border:1px solid rgba(65,145,82,.17);font-size:27px;font-weight:900;letter-spacing:.08em;color:#4d9656}
.compact-omikuji .mini-countdown{margin:13px 0 6px}
.share-section-clean{padding:78px 0}
.share-one-line{font-size:17px;max-width:600px;line-height:1.8}
.share-section-clean .mini-feature-grid{display:none}
@media(max-width:900px){
  .feature-clean,.feature-clean.reverse{grid-template-columns:1fr}
  .feature-clean.reverse .feature-copy{order:0}
}
@media(max-width:620px){
  .feature-showcase-clean{gap:18px}
  .feature-clean{padding:18px;border-radius:22px;gap:16px}
  .feature-clean .feature-copy h3{font-size:28px;margin:3px 0 5px}
  .feature-one-line{font-size:14px!important}
  .compact-note{font-size:10px!important;margin-top:10px!important;white-space:normal}
  .omikuji-zone-clean{padding:54px 0}
  .compact-heading h2{font-size:29px}
  .compact-heading p{font-size:13px}
  .compact-omikuji{padding:18px 11px 17px}
  .compact-omikuji h3{font-size:23px}
  .compact-omikuji p{font-size:11px!important;min-height:0!important}
  .coming-soon{min-height:74px;font-size:21px;border-radius:15px}
  .share-section-clean{padding:58px 0}
  .share-one-line{font-size:14px}
}