:root{--ink:#10233f;--muted:#607086;--blue:#155db4;--blue2:#2b7bdb;--line:#d9e7f5;--card:#ffffffee;--bg:#f4f8ff;--shadow:0 18px 50px rgba(28,72,128,.10);--r:24px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:radial-gradient(circle at 9% 0%,rgba(83,151,255,.18),transparent 28%),radial-gradient(circle at 88% 18%,rgba(94,183,255,.13),transparent 26%),linear-gradient(180deg,#f7faff,#eef5ff 54%,#fafcff)}a{color:var(--blue);text-decoration:none}.wrap{max-width:1120px;margin:auto;padding:0 22px}.top{position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(217,231,245,.9);background:rgba(255,255,255,.78);backdrop-filter:blur(14px)}.nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{font-size:25px;font-weight:900;color:#10396f}.brand small{display:block;font-size:11px;color:#6d7e93;letter-spacing:.5px;font-weight:700}.navlinks{display:flex;gap:17px;align-items:center;flex-wrap:wrap}.navlinks a{font-weight:700;color:#395d86}.navlinks .mainlink{font-size:13px;color:#6f8298}.hero{padding:54px 0 22px}.heroGrid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}.heroMain,.heroSide,.panel{padding:30px}.eyebrow{display:inline-flex;padding:8px 13px;border:1px solid var(--line);border-radius:999px;background:#f7fbff;color:#416b99;font-size:13px;font-weight:800}.hero h1,.pagehead h1{font-size:54px;line-height:1.08;letter-spacing:-1.4px;margin:16px 0}.lead{font-size:19px;line-height:1.8;color:var(--muted)}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}.btn{border:0;border-radius:15px;padding:14px 20px;background:linear-gradient(135deg,var(--blue),var(--blue2));color:white;font-weight:850;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.btn.alt{background:white;color:var(--blue);border:1px solid var(--line)}.btn.soft{background:#edf5ff;color:#184b85}.chips{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}.chip,.tag{padding:8px 11px;border-radius:999px;border:1px solid var(--line);background:white;color:#3b628f;font-weight:750;font-size:13px}.miniGrid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.mini{padding:16px;border:1px solid var(--line);border-radius:18px;background:#f8fbff}.mini b{display:block;font-size:25px;color:#113f78}.mini span{display:block;margin-top:6px;color:var(--muted);line-height:1.45}.section{padding:20px 0}.section h2{font-size:34px;margin:0 0 12px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.service{padding:24px;min-height:185px}.service h3{font-size:23px;margin:0 0 9px}.service p{color:var(--muted);line-height:1.75}.pagehead{padding:42px 0 10px}.pagehead p{max-width:780px}.lang{display:flex;gap:9px;flex-wrap:wrap}.lang a{padding:9px 12px;border:1px solid var(--line);background:#fff;border-radius:999px;font-weight:750}.quiz{padding:22px 0 60px}.q{display:none}.q.on{display:block}.q h2{font-size:31px;margin:0 0 7px}.help{color:var(--muted);line-height:1.7}.opts{display:grid;gap:11px;margin-top:16px}.opt,.goal{padding:15px 17px;border:1px solid var(--line);border-radius:17px;background:white;cursor:pointer}.opt:hover,.goal:hover{border-color:#94bdec}.opt.on,.goal.on{background:#eef6ff;border-color:#5e98dd;box-shadow:inset 0 0 0 1px rgba(94,152,221,.18)}.opt small{display:block;color:var(--muted);margin-top:6px}.row{display:flex;gap:11px;flex-wrap:wrap;margin-top:17px}.hidden{display:none!important}.result h2{font-size:38px;margin:6px 0 10px}.formgrid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.field label{display:block;font-weight:800;margin-bottom:7px}.field input,.field select{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:14px;font-size:16px;background:white}.notice{padding:17px;border-radius:16px;background:#f2f7ff;border-left:4px solid var(--blue2);line-height:1.7;color:#405872}.fun{display:grid;grid-template-columns:1fr 1fr;gap:12px}.funbox{padding:17px;border:1px dashed #a9c8ea;border-radius:18px;background:linear-gradient(135deg,#f7fbff,#fff)}.funbox b{display:block;font-size:20px}.librarycta{padding:24px;display:flex;align-items:center;justify-content:space-between;gap:16px}.footer{padding:38px 0 56px;color:#718198;font-size:14px}.kicker{font-size:13px;font-weight:850;color:#5680ad}.check{display:flex;gap:10px;align-items:flex-start;padding:13px;border:1px solid var(--line);border-radius:15px;background:#fff}.check input{margin-top:4px}.mainBack{font-size:13px;color:#718198}.progress{height:8px;background:#e6eef8;border-radius:999px;overflow:hidden;margin:12px 0 20px}.progress i{display:block;height:100%;width:16.66%;background:linear-gradient(90deg,var(--blue),#58a3f0);transition:.25s}.footerBrand{font-weight:800;color:#476a93}@media(max-width:850px){.heroGrid,.grid3,.formgrid,.fun{grid-template-columns:1fr}.hero h1,.pagehead h1{font-size:39px}.navlinks a:not(.mainlink){display:none}.miniGrid{grid-template-columns:1fr 1fr}}
/* contact + share */
.sharebox{margin-top:16px;padding:14px;border:1px solid var(--line);border-radius:16px;background:#f8fbff}.sharebox b{display:block;margin-bottom:8px}.shareline{display:flex;gap:9px}.shareline input{flex:1;min-width:0;padding:12px 13px;border:1px solid var(--line);border-radius:12px;background:white;color:#476a93}.contactGrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}.contactItem{padding:18px;text-align:center;border:1px solid var(--line);border-radius:18px;background:#fff}.contactItem h3{margin:0 0 10px}.qr{width:180px;max-width:100%;border-radius:14px;border:1px solid var(--line);background:#fff;padding:7px}.emailItem{display:flex;flex-direction:column;align-items:center;justify-content:center}.emailIcon{font-size:44px;margin:10px 0 18px}.officialHero{padding:34px 0 12px}.officialBanner{width:100%;display:block;border-radius:26px;border:1px solid var(--line);box-shadow:var(--shadow)}.officialIntro{text-align:center;max-width:900px;margin:28px auto 0}.officialIntro h1{font-size:46px;margin:8px 0 12px}.officialIntro p{font-size:18px;line-height:1.8;color:var(--muted)}.navMenu{display:flex;gap:22px;align-items:center}.navMenu a{font-weight:750;color:#3b628f}.trustStrip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:18px}.trustItem{padding:18px;border:1px solid var(--line);border-radius:18px;background:#fff;text-align:center}.trustItem b{display:block;font-size:20px;color:#174a7e}.officialServices{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.officialService{padding:24px}.officialService h3{font-size:22px;margin:8px 0}.officialService p{color:var(--muted);line-height:1.7}@media(max-width:850px){.contactGrid,.officialServices,.trustStrip{grid-template-columns:1fr 1fr}.officialIntro h1{font-size:36px}.navMenu{display:none}}@media(max-width:560px){.contactGrid,.trustStrip,.officialServices{grid-template-columns:1fr}.shareline{flex-direction:column}}
/* JapanMedAI V1 final architecture */
.textLink{align-self:center;font-weight:800;color:#315f91;padding:12px 4px}.officialBanner{aspect-ratio:2048/682;object-fit:cover}.trustCard{min-height:150px}.trustCard b{font-size:20px}.dualEntry{display:grid;grid-template-columns:1fr 1fr;gap:18px}.entryCard{padding:30px;display:block}.entryCard h3{font-size:30px;line-height:1.25;margin:10px 0}.entryCard p{color:var(--muted);line-height:1.75;margin-bottom:22px}.weightEntry{background:linear-gradient(145deg,#fff,#f6f1ff)}.topicGrid{display:flex;flex-wrap:wrap;gap:12px}.topicPill{padding:14px 18px;border-radius:999px;background:white;border:1px solid var(--line);font-weight:800;box-shadow:0 8px 22px rgba(28,72,128,.06)}.soHead{max-width:1000px}.soScenarios{padding:8px 0 22px}.soScenarios h2{font-size:34px}.scenarioGrid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.scenario{padding:18px;min-height:130px;box-shadow:none}.scenario b{display:block;font-size:18px;margin-bottom:8px}.scenario span{font-size:14px;color:var(--muted);line-height:1.6}.resultGrid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:18px 0}.docChecklist{margin-top:18px;padding:18px;border:1px solid var(--line);border-radius:18px;background:#fbfdff}.docChecklist h3{margin:0 0 12px}.checkGrid{display:grid;grid-template-columns:repeat(2,1fr);gap:9px;color:#46627e}.recommendGrid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.recommendCard{padding:18px;border:1px solid var(--line);border-radius:17px;background:#fff}.recommendCard b{display:block;font-size:18px;margin-bottom:8px}.recommendCard span{display:block;color:var(--muted);line-height:1.6}.weightHead{padding-top:32px}.weightSubtitle{font-size:15px;font-weight:800;color:#5c7592;margin-top:14px}.weightHead h1{max-width:900px}.weightHead .lead{max-width:850px}.weightHead .actions{margin-top:16px}
@media(max-width:900px){.scenarioGrid{grid-template-columns:1fr 1fr}.dualEntry,.resultGrid,.recommendGrid{grid-template-columns:1fr}.entryCard h3{font-size:26px}}
@media(max-width:560px){.scenarioGrid,.checkGrid{grid-template-columns:1fr}.officialHero{padding-top:18px}.officialBanner{border-radius:16px}.officialIntro{margin-top:20px}.officialIntro h1{font-size:32px}.entryCard{padding:22px}}

/* Weight Viral Loop V1 */
.inviteBanner{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 22px;margin-bottom:16px;border:1px solid #d9e7f5;border-radius:20px;background:linear-gradient(135deg,#f2f8ff,#fbf6ff);box-shadow:0 10px 26px rgba(28,72,128,.07)}
.inviteBanner h3{margin:4px 0 5px;font-size:22px}.inviteBanner p{margin:0;color:#5d7188;font-weight:700}
.buddyCompare{background:linear-gradient(145deg,#fff,#f8f2ff)}.buddyPair{display:grid;grid-template-columns:1fr auto 1fr;gap:14px;align-items:center;margin:18px 0}
.buddyPair>div{padding:18px;border-radius:18px;border:1px solid var(--line);background:white;text-align:center}.buddyPair small{display:block;color:var(--muted);margin-bottom:7px}.buddyPair b{font-size:22px}.buddyPair>span{font-size:28px;font-weight:900;color:#8057b7}
.buddyInsight{font-size:17px}.sharebox{margin-top:18px}.shareline input{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}
@media(max-width:560px){.inviteBanner{align-items:flex-start;flex-direction:column}.buddyPair{grid-template-columns:1fr}.buddyPair>span{transform:rotate(90deg);justify-self:center}}

/* Weight 7-Day Light Challenge V1 */
.challenge{background:linear-gradient(145deg,#fff,#f5fbff 55%,#fbf6ff);overflow:hidden}
.challengeTop{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}
.challengeTop h2{margin:6px 0 8px}.challengeRing{min-width:108px;height:108px;border-radius:50%;border:9px solid #dceeff;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:0 10px 30px rgba(30,91,158,.08)}
.challengeRing b{font-size:25px;color:#164d86}.challengeRing span{font-size:11px;color:var(--muted);margin-top:3px;text-align:center}
.challengeStart{margin-top:17px}.challengeDay{margin-top:18px;padding:21px;border-radius:19px;background:#fff;border:1px solid var(--line)}
.challengeDay h3{font-size:18px;margin:6px 0}.challengeDay p{font-size:22px;font-weight:780;line-height:1.55;margin:7px 0;color:#153c68}
.challengeDots{display:grid;grid-template-columns:repeat(7,1fr);gap:8px;margin:16px 0}
.challengeDots i{height:38px;border-radius:12px;background:#edf3fa;display:flex;align-items:center;justify-content:center;font-style:normal;font-weight:800;color:#7890aa}
.challengeDots i.done{background:linear-gradient(135deg,#2d7bd0,#7c6bd6);color:#fff;box-shadow:0 7px 18px rgba(56,102,173,.18)}
.challengePrivacy{margin:14px 0 0;font-size:13px}.challengeDone{margin-top:17px;padding:22px;border-radius:20px;background:#fff;border:1px solid #d9e7f5;text-align:center}
.challengeDone h3{font-size:25px;margin:0 0 8px}.challengeDone p{color:var(--muted);line-height:1.7}
#completeTask:disabled{opacity:.68;cursor:default}
@media(max-width:560px){.challengeTop{align-items:stretch}.challengeRing{min-width:90px;width:90px;height:90px;border-width:7px}.challengeRing b{font-size:21px}.challengeDay p{font-size:19px}.challengeDots{gap:5px}.challengeDots i{height:32px;border-radius:9px;font-size:13px}}


/* Weight responsive experience V2 */
.weightPage .weightHead{max-width:980px;padding-top:50px}
.weightPage main.quiz{max-width:920px}
.weightPage main.quiz>.panel,.weightPage main.quiz>.card{scroll-margin-top:90px}
.weightPage .weightHead .actions .btn{min-height:52px;padding:15px 27px;font-size:17px}
.weightPage .q h2{line-height:1.28}
.weightPage .opt,.weightPage .goal{transition:border-color .18s ease,background .18s ease,transform .18s ease}
.weightPage .opt:active,.weightPage .goal:active{transform:scale(.99)}
.weightPage .shareline input{min-height:48px}
.weightPage button,.weightPage .btn,.weightPage .opt,.weightPage .goal{touch-action:manipulation}
@media(min-width:851px){
  .weightPage .weightHead h1{max-width:900px}
  .weightPage .weightHead .lead{max-width:820px}
  .weightPage main.quiz>.panel{padding:34px 38px}
}
@media(max-width:680px){
  .weightPage .wrap{padding-left:16px;padding-right:16px}
  .weightPage .top .nav{min-height:60px}
  .weightPage .brand{font-size:21px}
  .weightPage .brand small{display:none}
  .weightPage .weightHead{padding-top:22px;padding-bottom:2px}
  .weightPage .lang{gap:6px}
  .weightPage .lang a{padding:7px 9px;font-size:13px}
  .weightPage .weightSubtitle{font-size:14px;line-height:1.5}
  .weightPage .weightHead h1{font-size:34px;line-height:1.14;letter-spacing:-.7px;margin:12px 0}
  .weightPage .weightHead .lead{font-size:16.5px;line-height:1.65;margin:0}
  .weightPage .weightHead .actions{margin-top:18px}
  .weightPage .weightHead .actions .btn{width:100%;min-height:54px;font-size:17px}
  .weightPage .weightHead .chips{margin-top:12px}
  .weightPage .weightHead .chip{width:100%;font-size:12px;line-height:1.45;text-align:center;padding:9px 10px}
  .weightPage main.quiz{padding-top:14px;padding-bottom:42px}
  .weightPage main.quiz>.panel{padding:21px 16px;border-radius:18px}
  .weightPage .q h2{font-size:24px}
  .weightPage .help{font-size:14px}
  .weightPage .opt,.weightPage .goal{min-height:54px;padding:15px 14px;display:flex;align-items:center;line-height:1.45}
  .weightPage .row{display:grid;grid-template-columns:1fr;gap:9px}
  .weightPage .row .btn{width:100%;min-height:50px}
  .weightPage .sharebox{padding:14px 12px}
  .weightPage .shareline{gap:8px}
  .weightPage .shareline input{width:100%;font-size:14px}
  .weightPage .challengeTop{display:grid;grid-template-columns:1fr auto;gap:12px}
  .weightPage .challengeRing{min-width:82px;width:82px;height:82px}
  .weightPage .challengeDay{padding:17px 14px}
  .weightPage .result h2{font-size:31px}
  .weightPage input,.weightPage select,.weightPage button{font-size:16px}
}
@media(max-width:380px){
  .weightPage .weightHead h1{font-size:30px}
  .weightPage .challengeTop{grid-template-columns:1fr}
  .weightPage .challengeRing{justify-self:start}
}