/* 手机首次启程长卷：冰蓝纸雕山河 + 真实产品界面。
   只由 body.mobile-intro-active 激活，不改变桌面落地页和日常任务首页。 */
:root{
  --mi-ink:#082f49;
  --mi-ink-soft:#496b7d;
  --mi-blue:#168eb0;
  --mi-cyan:#79d5e8;
  --mi-line:rgba(22,112,142,.18);
  --mi-paper:#f7fbfc;
}

html[data-home-layout="compact"] body.mobile-intro-active{
  color-scheme:light;
  overflow:hidden!important;
}
html[data-home-layout="compact"] body.mobile-intro-active :is(#jxTabbar,.mobile-menu-btn,.sidebar,.workspace-bar,.geo-faq,.sb-icp){display:none!important}
html[data-home-layout="compact"] body.mobile-intro-active .mi-underlay{
  min-height:100svh;pointer-events:none;user-select:none;
  opacity:.74;filter:blur(2px) saturate(.72);transform:scale(.985);transform-origin:50% 12%;
}
.mi-overlay{
  position:fixed;z-index:10000;inset:0;display:grid;place-items:center;
  padding:max(14px,env(safe-area-inset-top,0px)) 10px max(14px,env(safe-area-inset-bottom,0px));
  overflow:hidden;background:rgba(3,31,48,.58);backdrop-filter:blur(8px) saturate(.82);
}

.mobile-intro{
  --mi-panel-height:min(88dvh,820px);
  position:relative;isolation:isolate;width:min(calc(100vw - 28px),560px);height:var(--mi-panel-height);
  max-height:calc(100dvh - 28px);margin:0;overflow-x:hidden;overflow-y:auto;overscroll-behavior:contain;
  border:1px solid rgba(255,255,255,.72);border-radius:28px;scrollbar-width:none;
  color:var(--mi-ink);background:var(--mi-paper);font-family:var(--jx-font-text)!important;
  box-shadow:0 30px 90px rgba(2,25,39,.42),0 2px 10px rgba(4,47,67,.18);
}
.mobile-intro::-webkit-scrollbar{display:none}
.mobile-intro img[hidden]{display:none!important}
/* 现有 #view 子页面入场动画会给 article 留下 transform/filter，
   它们会把 fixed 顶栏的定位参照改成整张长卷。开场根节点必须保持无变换。 */
body.mobile-intro-active .mobile-intro{
  animation:none!important;filter:none!important;transform:none!important;
}
.mobile-intro,.mobile-intro *{box-sizing:border-box}
.mobile-intro :focus-visible{outline:3px solid rgba(94,211,232,.72);outline-offset:4px}
.mi-chrome{
  position:sticky;z-index:50;top:10px;left:auto;
  width:calc(100% - 24px);height:52px;display:grid;grid-template-columns:auto 1fr 44px;align-items:center;gap:10px;
  margin:10px 12px -62px;
  padding:0 4px 0 12px;border:1px solid rgba(255,255,255,.68);border-radius:999px;
  color:#123e57;background:rgba(248,252,253,.82);box-shadow:0 12px 32px rgba(5,48,73,.12);backdrop-filter:blur(18px) saturate(1.25);
  transform:none;
}
.mi-step{display:flex;align-items:baseline;gap:3px;font-variant-numeric:tabular-nums}.mi-step b{font-size:12px}.mi-step i{color:#738c98;font-size:9px;font-style:normal}
.mi-progress{height:2px;overflow:hidden;border-radius:9px;background:rgba(20,92,116,.12)}
.mi-progress>i{display:block;width:2%;height:100%;border-radius:inherit;background:linear-gradient(90deg,#177fa6,#60d1e4);transition:width .16s linear}
.mi-close{width:44px;min-width:44px;min-height:44px;display:grid;place-items:center;padding:0;border:1px solid rgba(19,104,131,.1);border-radius:50%;color:#0c6781;background:rgba(221,240,244,.92);box-shadow:inset 0 1px rgba(255,255,255,.8);cursor:pointer}
.mi-close span{font-size:24px;font-weight:400!important;line-height:1;transform:translateY(-1px)}

.mi-section{position:relative;min-height:var(--mi-panel-height);display:flex;flex-direction:column;justify-content:center;padding:92px 24px 64px;overflow:hidden}
.mi-copy{position:relative;z-index:2}.mi-kicker{display:block;margin-bottom:14px;color:#2b87a3;font-size:9px;font-weight:650;letter-spacing:.15em;text-transform:uppercase}
.mi-copy h1,.mi-copy h2{margin:0;color:inherit;font-family:var(--jx-font-display)!important;font-weight:600!important;letter-spacing:-.035em!important;text-wrap:balance}.mi-copy h1{font-size:clamp(37px,10.7vw,54px);line-height:1.18}.mi-copy h2{font-size:clamp(31px,8.4vw,43px);line-height:1.22}
.mi-copy p{max-width:440px;margin:20px 0 0;color:var(--mi-ink-soft);font-size:14px;line-height:1.9}
.mi-section .mi-copy,.mi-section :is(.mi-generated-card,.mi-exam-route,.mi-course-story,.mi-atlas-frame,.mi-explain-card,.mi-visual-values,.mi-loop-stage,.mi-extra-tools,.mi-proof,.mi-enter){opacity:0;transform:translateY(24px);transition:opacity .72s ease,transform .9s cubic-bezier(.22,1,.36,1)}
.mi-section.is-visible .mi-copy,.mi-section.is-visible :is(.mi-generated-card,.mi-exam-route,.mi-course-story,.mi-atlas-frame,.mi-explain-card,.mi-visual-values,.mi-loop-stage,.mi-extra-tools,.mi-proof,.mi-enter){opacity:1;transform:none}
.mi-section.is-visible :is(.mi-generated-card,.mi-exam-route,.mi-course-story,.mi-atlas-frame,.mi-explain-card,.mi-loop-stage){transition-delay:.12s}
.mi-generated-card{position:relative;z-index:2;border:1px solid rgba(18,82,106,.14);border-radius:24px;background:rgba(255,255,255,.92);box-shadow:0 25px 48px rgba(7,54,77,.14);overflow:hidden}
.mi-generated-visual{filter:saturate(.94) contrast(.99)}

/* 01 · Hero */
.mi-hero{min-height:max(680px,var(--mi-panel-height));justify-content:flex-end;padding-bottom:128px;color:#fff;background:#0a3b58}
.mi-hero-image{position:absolute;z-index:0;inset:0;width:100%;height:100%;object-fit:cover;object-position:69% center;transform:scale(1.055);will-change:transform}
.mi-hero-wash{position:absolute;z-index:1;inset:0;background:linear-gradient(180deg,rgba(246,251,252,.04) 8%,rgba(12,54,78,.05) 37%,rgba(5,37,58,.96) 88%),linear-gradient(110deg,rgba(255,255,255,.05),rgba(2,36,58,.2))}
.mi-hero::after{content:"";position:absolute;z-index:1;left:-25%;right:-25%;bottom:-24%;height:47%;border-radius:50%;background:radial-gradient(ellipse at center,rgba(88,209,232,.22),transparent 67%);filter:blur(14px)}
.mi-welcome{display:inline-flex;align-items:center;min-height:28px;margin-bottom:15px;padding:0 11px;border:1px solid rgba(180,232,240,.28);border-radius:999px;color:#d9f3f6;background:rgba(10,74,97,.36);font-size:10px;font-weight:600;letter-spacing:.08em;backdrop-filter:blur(8px)}
.mi-hero .mi-kicker{color:#93e3ef}.mi-hero-copy p{color:#c6e0e7}
.mi-scroll-cue{display:flex;align-items:center;gap:9px;margin-top:34px;color:#9bcdd8;font-size:10px;letter-spacing:.09em}
.mi-scroll-cue i{position:relative;width:18px;height:29px;border:1px solid rgba(190,233,240,.45);border-radius:99px}
.mi-scroll-cue i::after{content:"";position:absolute;top:6px;left:50%;width:2px;height:7px;border-radius:4px;background:#aee9f0;transform:translateX(-50%);animation:miScroll 1.7s ease-in-out infinite}

/* 02 · Exam route */
.mi-exam{justify-content:flex-start;background:linear-gradient(180deg,#f8fbfc 0%,#eaf4f7 100%)}
.mi-exam-art{margin:28px 0 0}
.mi-exam-art img{display:block;width:100%;aspect-ratio:2/3;object-fit:cover}
.mi-exam-route{position:relative;display:grid;gap:0;margin-top:20px;padding-left:4px}
.mi-exam-route::before{content:"";position:absolute;left:23px;top:25px;bottom:25px;width:1px;background:linear-gradient(#50bad2,#b0dce4 80%,#c9a85b)}
.mi-exam-route article{position:relative;display:grid;grid-template-columns:46px 1fr;gap:15px;align-items:center;min-height:89px}
.mi-exam-route article>i{z-index:1;display:grid;width:40px;height:40px;place-items:center;border:1px solid #65b9cc;border-radius:50%;color:#157c9b;background:#f5fbfc;font:650 10px/1 var(--font-metric);font-style:normal;box-shadow:0 0 0 7px rgba(237,247,249,.9)}
.mi-exam-route article:last-child>i{color:#fff;border-color:#cfab55;background:#9b741b}
.mi-exam-route article>span{display:grid;gap:2px}.mi-exam-route small{color:#668594;font-size:9px;letter-spacing:.08em}.mi-exam-route b{font-size:16px}.mi-exam-route em{color:#67808c;font-size:11px;font-style:normal}

/* 03 · Course path: illustration carries the route, DOM text carries the meaning. */
.mi-course{justify-content:flex-start;background:linear-gradient(160deg,#f8fbfc 0%,#e5f1f4 100%)}
.mi-course::before{content:"";position:absolute;left:-125px;bottom:5%;width:270px;height:270px;border:1px solid rgba(26,122,148,.08);border-radius:50%;box-shadow:0 0 0 38px rgba(26,122,148,.025),0 0 0 76px rgba(26,122,148,.018)}
.mi-course-story{margin-top:27px}
.mi-course-story figure{position:relative;margin:0;background:#eaf3f6;overflow:hidden}
.mi-course-story figure>img{display:block;width:100%;aspect-ratio:2/3;object-fit:cover}
.mi-course-story figcaption{position:absolute;left:10px;right:10px;bottom:10px;padding:10px;border:1px solid rgba(255,255,255,.72);border-radius:15px;background:rgba(246,251,252,.88);box-shadow:0 10px 24px rgba(7,47,68,.12);backdrop-filter:blur(12px)}
.mi-course-story figcaption>small{display:block;margin-bottom:7px;color:#4c7282;font-size:8px;font-weight:650;letter-spacing:.1em}
.mi-course-subjects{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:5px}
.mi-course-subjects b{min-width:0;display:flex;align-items:center;gap:5px;padding:6px 7px;border-radius:9px;color:#173f50;background:#fff;font-size:9px;font-weight:600;line-height:1.2;white-space:nowrap}
.mi-course-subjects i{color:#2a8ba4;font:650 7px/1 var(--font-metric);font-style:normal}
.mi-course-path{display:grid;margin:0;padding:10px 14px 12px;list-style:none;background:#fff}
.mi-course-path li{position:relative;min-width:0;display:grid;grid-template-columns:25px 1fr;gap:8px;align-items:center;min-height:42px;color:#244e60}
.mi-course-path li:not(:last-child)::after{content:"";position:absolute;left:11px;top:31px;bottom:-11px;width:1px;background:#9fcdd6}
.mi-course-path li>i{z-index:1;display:grid;width:23px;height:23px;place-items:center;border:1px solid #8bc5d0;border-radius:50%;color:#1d829b;background:#edf7f8;font:650 8px/1 var(--font-metric);font-style:normal}
.mi-course-path li>span{min-width:0;display:grid;grid-template-columns:78px 1fr;gap:8px;align-items:center}.mi-course-path b{font-size:11px;line-height:1.25}.mi-course-path small{color:#6a8591;font-size:9px;line-height:1.45}

/* 06 · Directed practice, rendered in the same generated-scroll grammar. */
.mi-practice{justify-content:flex-start;background:linear-gradient(160deg,#f8fbfc 0%,#e5f1f4 100%)}
.mi-practice::before{content:"";position:absolute;right:-130px;bottom:8%;width:280px;height:280px;border:1px solid rgba(26,122,148,.07);border-radius:50%;box-shadow:0 0 0 42px rgba(26,122,148,.022),0 0 0 84px rgba(26,122,148,.016)}
.mi-practice .mi-kicker{color:#2b87a3}.mi-practice .mi-copy p{color:var(--mi-ink-soft)}
.mi-practice-story{margin-top:27px}
.mi-practice-story figure,.mi-loop-stage figure{margin:0;background:#edf5f7;overflow:hidden}
.mi-practice-story figure img,.mi-loop-stage figure img{display:block;width:100%;aspect-ratio:2/3;object-fit:cover}
.mi-story-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin:0;padding:12px;list-style:none;background:#fff}
.mi-story-steps li{position:relative;min-width:0;display:grid;justify-items:center;gap:6px;padding:2px 5px;color:#244e60;text-align:center}
.mi-story-steps li:not(:last-child)::after{content:"";position:absolute;right:-1px;top:4px;bottom:4px;width:1px;background:rgba(28,117,142,.13)}
.mi-story-steps i{display:grid;width:24px;height:24px;place-items:center;border:1px solid #8bc5d0;border-radius:50%;color:#1d829b;background:#edf7f8;font:650 8px/1 var(--font-metric);font-style:normal}
.mi-story-steps b{font-size:10px;line-height:1.35}

/* 04 · Map */
.mi-map{background:linear-gradient(160deg,#edf6f8 0%,#f9fbfb 60%,#e3eff2 100%)}
.mi-map::before{content:"";position:absolute;inset:-20% -35% 45%;border:1px solid rgba(26,122,148,.07);border-radius:50%;box-shadow:0 0 0 42px rgba(26,122,148,.022),0 0 0 84px rgba(26,122,148,.016)}
.mi-map .mi-kicker{color:#2b87a3}.mi-map .mi-copy p{color:var(--mi-ink-soft)}
.mi-atlas-frame{margin:28px 0 0}
.mi-atlas-frame>img{display:block;width:100%;aspect-ratio:2/3;object-fit:cover}
.mi-atlas-frame figcaption{display:grid;grid-template-columns:repeat(3,1fr);background:#f6f2e9;color:#173d4d}
.mi-atlas-frame figcaption span{display:grid;gap:5px;padding:13px 8px;border-right:1px solid rgba(15,76,95,.12);font-size:9px;line-height:1.4}.mi-atlas-frame figcaption span:last-child{border-right:0}.mi-atlas-frame figcaption i{color:#b34d3f;font:650 9px/1 var(--font-metric);font-style:normal}

/* 05 · Visual explanations */
.mi-learning{justify-content:flex-start;background:linear-gradient(165deg,#f9fcfc 0%,#e8f3f5 72%,#dcecf0 100%)}
.mi-learning::before{content:"";position:absolute;right:-150px;top:24%;width:300px;height:300px;border:1px solid rgba(38,132,156,.08);border-radius:50%;box-shadow:0 0 0 42px rgba(38,132,156,.025),0 0 0 84px rgba(38,132,156,.018)}
.mi-explain-card{margin-top:26px}
.mi-explain-head{height:38px;display:flex;align-items:center;justify-content:space-between;padding:0 13px;color:#244e60;background:#f8fbfb}
.mi-explain-head b{font-size:10px;letter-spacing:.06em}.mi-explain-head span{padding:4px 7px;border-radius:999px;color:#147e99;background:#e4f4f6;font-size:8px}
.mi-explain-card figure{position:relative;margin:0;background:#e9e3d6;overflow:hidden}
.mi-explain-card figure>img{display:block;width:100%;aspect-ratio:2/3;object-fit:cover}
.mi-explain-card figcaption{position:absolute;left:0;right:0;bottom:0;display:grid;gap:4px;padding:42px 14px 12px;color:#fff;background:linear-gradient(transparent,rgba(3,29,43,.9))}
.mi-explain-card figcaption small{color:#a9e3eb;font-size:8px;letter-spacing:.08em}.mi-explain-card figcaption b{font-size:13px;line-height:1.35}
.mi-explain-flow{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:center;gap:6px;min-height:43px;padding:0 12px;color:#66808c;background:#fff;font-size:8px;text-align:center}
.mi-explain-flow i{color:#65afbf;font-style:normal}.mi-explain-flow strong{color:#157d98;font-size:9px}
.mi-visual-values{position:relative;z-index:2;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;margin-top:10px}
.mi-visual-values span{min-width:0;display:grid;gap:4px;padding:9px 8px;border:1px solid rgba(18,91,114,.12);border-radius:12px;background:rgba(255,255,255,.74)}
.mi-visual-values i{color:#1a8199;font:600 8px/1 var(--font-metric);font-style:normal}.mi-visual-values b{font-size:8px;line-height:1.3}

/* 07 · Loop */
.mi-loop{background:linear-gradient(145deg,#e5f1f4 0%,#f8fbfb 62%,#dcecf0 100%)}
.mi-loop-stage{margin-top:28px}
.mi-loop-steps{grid-template-columns:repeat(4,minmax(0,1fr))}
.mi-loop-steps li{padding-left:2px;padding-right:2px}.mi-loop-steps b{font-size:9px}.mi-loop-steps li:last-child i{color:#fff;background:#147c99}
.mi-extra-tools{display:flex;justify-content:center;gap:7px;margin-top:22px}.mi-extra-tools span{padding:8px 10px;border:1px solid rgba(18,101,128,.14);border-radius:999px;color:#3f6677;background:rgba(255,255,255,.58);font-size:9px}

/* 08 · Finish */
.mi-finish{min-height:max(760px,var(--mi-panel-height));justify-content:flex-end;align-items:center;padding-bottom:70px;text-align:center;color:#f2f9fa;background:#073d5c}
.mi-finish-image{position:absolute;z-index:0;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
.mi-finish-wash{position:absolute;z-index:1;inset:0;background:linear-gradient(180deg,rgba(4,39,60,.02) 15%,rgba(5,43,65,.14) 38%,rgba(4,35,54,.9) 63%,rgba(3,27,43,.98) 100%)}
.mi-finish .mi-kicker{color:#86d9e6}.mi-finish .mi-copy p{margin-left:auto;margin-right:auto;color:#aecbd3}
.mi-proof{position:relative;z-index:2;width:100%;display:grid;grid-template-columns:repeat(3,1fr);margin-top:37px;border-top:1px solid rgba(198,234,239,.14);border-bottom:1px solid rgba(198,234,239,.14)}
.mi-proof span{display:grid;gap:5px;padding:18px 5px;border-right:1px solid rgba(198,234,239,.14)}.mi-proof span:last-child{border-right:0}.mi-proof b{font:600 19px/1 var(--font-metric);color:#fff}.mi-proof small{color:#88acb7;font-size:8px}
.mi-enter{position:relative;z-index:2;width:100%;min-height:58px;display:flex;align-items:center;justify-content:space-between;margin-top:28px;padding:0 20px;border:0;border-radius:999px;color:#0b4b62;background:#f7fcfd;box-shadow:0 16px 35px rgba(0,0,0,.18);font-size:14px;cursor:pointer}.mi-enter i{font-size:20px;font-style:normal}.mi-finish-note{position:relative;z-index:2;margin-top:20px;color:#608996;font-size:8px;letter-spacing:.08em}

/* 功能菜单里的常驻重看入口 */
@media(max-width:768px){
  .mmenu-guide{width:100%;min-height:62px;display:grid;grid-template-columns:38px 1fr auto;gap:11px;align-items:center;margin:9px 0 5px;padding:10px 13px;border:1px solid rgba(20,116,143,.15);border-radius:14px;color:#164d60;background:linear-gradient(110deg,rgba(222,244,248,.72),rgba(255,255,255,.76));text-align:left}
  .mmenu-guide img{width:34px;height:34px}.mmenu-guide span{display:grid;gap:2px}.mmenu-guide b{font-size:13px}.mmenu-guide small{color:#6b858e;font-size:10px}.mmenu-guide>i{color:#23829b;font-size:18px;font-style:normal}
}

@media(min-width:561px){
  .mobile-intro{border-left:1px solid rgba(255,255,255,.5);border-right:1px solid rgba(255,255,255,.5)}
  .mi-section{padding-left:36px;padding-right:36px}.mi-route-art{margin-left:-36px;margin-right:-36px}
}
@media(max-height:680px){
  .mi-section{padding-top:78px;padding-bottom:44px}.mi-copy h1{font-size:38px}.mi-copy h2{font-size:31px}.mi-copy p{margin-top:14px;line-height:1.72}
  .mi-exam-route{margin-top:18px}.mi-exam-route article{min-height:72px}
}
@media(prefers-reduced-motion:reduce){
  .mobile-intro *{animation:none!important;scroll-behavior:auto!important;transition:none!important}
  .mi-section .mi-copy,.mi-section :is(.mi-generated-card,.mi-exam-route,.mi-course-story,.mi-atlas-frame,.mi-explain-card,.mi-visual-values,.mi-loop-stage,.mi-extra-tools,.mi-proof,.mi-enter){opacity:1;transform:none}
  .mi-hero-image{transform:scale(1.025)!important;will-change:auto}
}

@keyframes miScroll{0%,100%{opacity:.2;transform:translate(-50%,0)}50%{opacity:1;transform:translate(-50%,8px)}}