:root{--lf-desk:#f3f8fa;--lf-paper:#ffffff;--lf-rule:#dcecf1;--lf-margin:#f4c7c3;--lf-ice:#0891b2;--lf-ice-deep:#0e7490;--lf-ice-wash:#e0f5fa;--lf-note:#fff4c2;--lf-ink:#102a33;--lf-dim:#4b626b;--lf-teal:#0b4f5f;--lf-teal-text:#cfe9ef;--lf-type:"PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans CJK SC", "Segoe UI", sans-serif}body{margin:0;color:var(--lf-ink);background:var(--lf-desk);font-family:var(--lf-type);font-size:16px;line-height:1.8}a{color:var(--lf-ice-deep)}:focus-visible{outline:3px solid var(--lf-ice);outline-offset:2px}.lf-span{box-sizing:border-box;max-width:1120px;margin-inline:auto;padding-inline:32px}.lf-dim{color:var(--lf-dim)}.lf-blank{margin:0;padding:18px 20px;color:var(--lf-dim);background:var(--lf-ice-wash);border-radius:10px}.lf-tag{margin:0;color:var(--lf-ice-deep);font-size:14px;font-weight:700}.lf-button{display:inline-flex;flex:none;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border:2px solid var(--lf-ice-deep);border-radius:8px;font-size:16px;font-weight:700;text-decoration:none;white-space:nowrap}.lf-button-ice{color:#fff;background:var(--lf-ice-deep)}.lf-button-ice:hover{background:var(--lf-teal);border-color:var(--lf-teal)}.lf-button-paper{color:var(--lf-ice-deep);background:var(--lf-paper)}.lf-button-paper:hover{background:var(--lf-ice-wash)}.lf-button-sm{min-height:44px;padding:0 16px;font-size:15px}.lf-buttons{display:flex;flex-wrap:wrap;gap:12px;margin:0}.lf-more{display:inline-flex;align-items:center;min-height:44px;margin-top:12px;font-weight:700;text-decoration:underline;text-decoration-color:var(--lf-ice);text-decoration-thickness:2px;text-underline-offset:5px}.lf-desk{padding-top:14px}.lf-desk-row{display:flex;align-items:center;gap:20px;min-height:56px}.lf-name{display:inline-flex;align-items:center;gap:12px;min-width:0;margin:0 auto 0 0;color:var(--lf-ink);font-size:18px;font-weight:800;text-decoration:none}.lf-name span{min-width:0;overflow-wrap:anywhere}.lf-ring{display:inline-grid;flex:none;place-items:center;width:32px;height:32px;box-sizing:border-box;color:var(--lf-ice-deep);background:var(--lf-paper);border:3px solid var(--lf-ice);border-radius:50%;font-size:14px}img.lf-ring{object-fit:contain;border:0}.lf-desk-acc{display:flex;flex:none;align-items:center;gap:16px;margin:0}.lf-desk-in{display:inline-flex;align-items:center;min-height:44px;color:var(--lf-ink);font-weight:600;text-decoration:none;white-space:nowrap}.lf-dividers{display:flex;gap:4px;margin-top:14px;overflow-x:auto;scrollbar-width:none}.lf-dividers a{display:inline-flex;flex:none;align-items:center;min-height:44px;padding:0 20px;color:var(--lf-dim);background:var(--lf-ice-wash);border:1px solid var(--lf-rule);border-bottom:0;border-radius:10px 10px 0 0;font-size:15px;font-weight:600;text-decoration:none;white-space:nowrap}.lf-dividers a:hover{color:var(--lf-ink);background:#eef9fc}.lf-dividers a[aria-current="page"]{position:relative;color:var(--lf-ink);background:var(--lf-paper);box-shadow:inset 0 3px 0 var(--lf-ice)}.lf-dividers a[aria-current="page"]::after{position:absolute;right:0;bottom:-1px;left:0;height:2px;content:"";background:var(--lf-paper)}.lf-book{position:relative;max-width:1180px;margin:0 auto 64px;padding:24px 0 40px;background-color:var(--lf-paper);background-image:linear-gradient(var(--lf-rule) 1px, transparent 1px);background-size:100% 32px;border:1px solid var(--lf-rule);border-radius:0 0 14px 14px;box-shadow:0 18px 40px rgba(16, 42, 51, .07)}.lf-book::before{position:absolute;top:0;bottom:0;left:72px;width:2px;content:"";background:var(--lf-margin)}.lf-book::after{position:absolute;top:24px;bottom:24px;left:22px;width:22px;content:"";background:radial-gradient(circle at 11px 11px, var(--lf-desk) 0 6px, var(--lf-rule) 7px 8px, transparent 9px) 0 0 / 22px 64px repeat-y}.lf-book > *,.lf-book main > *{position:relative;z-index:1}.lf-book .lf-span{padding-left:104px}.lf-sticky{display:flex;gap:12px;width:fit-content;max-width:calc(100% - 140px);margin:0 0 8px 104px;padding:12px 16px !important;font-size:15px;background:var(--lf-note);box-shadow:2px 3px 0 rgba(16, 42, 51, .08);transform:rotate(-.4deg);overflow-wrap:anywhere}.lf-sticky b{flex:none}.lf-sticky p{margin:0}.lf-cover{display:grid;grid-template-columns:minmax(0, 1.1fr) minmax(0, .9fr);gap:48px;align-items:start;padding-top:40px}.lf-cover h1{margin:10px 0 0;font-size:36px;line-height:1.33;overflow-wrap:anywhere}.lf-underline{margin:12px 0 0;font-size:24px;font-weight:800;line-height:1.6}.lf-underline span{background:linear-gradient(transparent 60%, var(--lf-ice-wash) 60%);box-shadow:inset 0 -3px 0 var(--lf-ice);overflow-wrap:anywhere;-webkit-box-decoration-break:clone;box-decoration-break:clone}.lf-cover-lines .lf-dim{margin:16px 0 28px}.lf-board{padding:22px 22px 16px;background:var(--lf-ice-wash);border:1px solid var(--lf-rule);border-radius:12px}.lf-board h2{margin:0 0 14px;font-size:18px}.lf-board ul{display:grid;gap:12px;margin:0;padding:0;list-style:none}.lf-pin{position:relative;padding:14px 16px 12px;font-size:15px;background:var(--lf-note);box-shadow:2px 3px 0 rgba(16, 42, 51, .08)}.lf-pin::before{position:absolute;top:-6px;left:50%;width:12px;height:12px;margin-left:-6px;content:"";background:var(--lf-ice);border-radius:50%;box-shadow:inset -2px -2px 0 rgba(0, 0, 0, .15)}.lf-pin-0{transform:rotate(-.6deg)}.lf-pin-1{background:var(--lf-paper);transform:rotate(.5deg)}.lf-pin strong{display:block;color:var(--lf-ice-deep)}.lf-board-note{margin:12px 0 0;color:var(--lf-dim);font-size:13px}.lf-marks{display:grid;grid-template-columns:repeat(auto-fit, minmax(200px, 1fr));gap:0 28px;margin:40px 0 0}.lf-marks > div{padding:8px 0 8px 14px;border-left:3px solid var(--lf-ice)}.lf-marks dt{font-weight:800}.lf-marks dd{margin:0;color:var(--lf-dim);overflow-wrap:anywhere}.lf-sheet{padding-top:64px;scroll-margin-top:16px}.lf-heading{display:inline;margin:0;font-size:28px;line-height:1.6;background:linear-gradient(transparent 62%, var(--lf-ice-wash) 62%);overflow-wrap:anywhere;-webkit-box-decoration-break:clone;box-decoration-break:clone}.lf-intro{margin:8px 0 26px}.lf-subjects{display:grid;grid-template-columns:repeat(2, minmax(0, 1fr));gap:0 40px;margin:0;padding:0;list-style:none}.lf-subjects li{display:grid;grid-template-columns:26px minmax(0, 1fr);column-gap:10px;padding:8px 0;line-height:1.6}.lf-check{grid-row:span 2;width:18px;height:18px;margin-top:3px;border:2px solid var(--lf-ice-deep);border-radius:4px;background:linear-gradient(45deg, transparent 46%, var(--lf-ice-deep) 46% 58%, transparent 58%) 2px 6px / 6px 6px no-repeat,
    linear-gradient(-45deg, transparent 44%, var(--lf-ice-deep) 44% 56%, transparent 56%) 5px 2px / 9px 10px no-repeat}.lf-subjects span:last-child{color:var(--lf-dim);font-size:15px}.lf-cards{display:grid;grid-template-columns:repeat(auto-fit, minmax(240px, 1fr));gap:20px}.lf-card{display:flex;flex-direction:column;overflow:hidden;background:var(--lf-paper);border:1px solid var(--lf-rule);border-radius:10px;box-shadow:0 6px 16px rgba(16, 42, 51, .06)}.lf-card-star{border:2px solid var(--lf-ice-deep)}.lf-card-fit{margin:0;padding:10px 18px;color:var(--lf-ink);background:var(--lf-ice-wash);border-bottom:2px solid var(--lf-ice);font-size:15px;font-weight:700;overflow-wrap:anywhere}.lf-card-star .lf-card-fit{color:#fff;background:var(--lf-ice-deep)}.lf-card-body{display:flex;flex:1;flex-direction:column;padding:16px 18px 20px}.lf-card h3{display:flex;flex-wrap:wrap;align-items:center;gap:4px 8px;margin:0;font-size:19px;overflow-wrap:anywhere}.lf-card-star-tag{padding:0 8px;color:var(--lf-ink);background:var(--lf-note);font-size:12px}.lf-card-price{margin:6px 0 10px;color:var(--lf-ice-deep);font-size:30px;font-weight:800;line-height:1.3;overflow-wrap:anywhere}.lf-card-price small{color:var(--lf-dim);font-size:15px;font-weight:400}.lf-card-lines{margin:0}.lf-card-lines > div{display:flex;justify-content:space-between;gap:12px;padding:4px 0;border-bottom:1px solid var(--lf-rule)}.lf-card-lines dt{color:var(--lf-dim)}.lf-card-lines dd{margin:0;font-weight:700;text-align:right;overflow-wrap:anywhere}.lf-card-note{flex:1;margin:10px 0 16px;color:var(--lf-dim);font-size:14px;overflow-wrap:anywhere}.lf-card-note p{margin:0}.lf-desk-set{display:grid;grid-template-columns:minmax(0, 1.2fr) minmax(0, 1fr);gap:20px;align-items:stretch}.lf-front{display:grid;grid-template-columns:auto minmax(0, 1fr);gap:14px 18px;align-content:center;padding:24px;background:var(--lf-note);box-shadow:3px 4px 0 rgba(16, 42, 51, .08)}.lf-front-icon svg{display:block;width:44px;height:44px;fill:var(--lf-ink)}.lf-front h3{margin:0;font-size:24px;overflow-wrap:anywhere}.lf-front .lf-dim{margin:2px 0 0}.lf-front-now{display:none;margin:0;color:var(--lf-ice-deep);font-size:13px;font-weight:700}.lf-front[data-v4-current] .lf-front-now{display:block}.lf-front .lf-button{grid-column:1 / -1;justify-self:start}.lf-rest{padding:18px 20px;background:var(--lf-paper);border:1px solid var(--lf-rule);border-radius:10px}.lf-rest h3{margin:0 0 8px;font-size:16px}.lf-rest ul{display:grid;grid-template-columns:repeat(2, minmax(0, 1fr));gap:8px;margin:0;padding:0;list-style:none}.lf-rest a{display:flex;flex-wrap:wrap;align-items:center;gap:4px 8px;min-height:48px;padding:4px 12px;color:var(--lf-ink);background:var(--lf-ice-wash);border-radius:8px;font-weight:600;text-decoration:none}.lf-rest a:hover{box-shadow:inset 0 0 0 2px var(--lf-ice)}.lf-rest svg{display:block;width:18px;height:18px;fill:var(--lf-ink)}.lf-rest 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rgba(207, 233, 239, .25)}.lf-back-legal span{overflow-wrap:anywhere}.lf-pagetop{padding-top:24px}.lf-trail{display:flex;flex-wrap:wrap;align-items:center;gap:0 8px;color:var(--lf-dim);font-size:14px}.lf-trail a{display:inline-flex;align-items:center;min-height:40px;color:var(--lf-dim)}.lf-pagetop h1{margin:4px 0 0;font-size:34px;line-height:1.5}.lf-pagetop h1 span{background:linear-gradient(transparent 62%, var(--lf-note) 62%);overflow-wrap:anywhere;-webkit-box-decoration-break:clone;box-decoration-break:clone}.lf-pagetop .lf-dim{margin:4px 0 0}.lf-pagebody{padding-top:32px}.lf-steps{max-width:820px;font-size:17px;line-height:2;counter-reset:lf-step}.lf-steps > .v4-rich:first-child{margin-bottom:12px;color:var(--lf-dim)}.lf-step{position:relative;scroll-margin-top:16px;overflow-wrap:anywhere}.lf-step-group > :is(h2,h3){margin:36px 0 4px;padding:2px 14px;font-size:22px;background:var(--lf-note);display:inline-block}.lf-step-item{counter-increment:lf-step;padding-left:46px}.lf-step-item::before{position:absolute;top:26px;left:0;display:grid;place-items:center;width:30px;height:30px;box-sizing:border-box;color:var(--lf-ice-deep);background:var(--lf-paper);border:2px solid var(--lf-ice-deep);border-radius:6px;font-size:14px;font-weight:800;line-height:1;content:counter(lf-step)}.lf-step-item > :is(h2,h3,h4){margin:24px 0 4px;font-size:20px}.lf-step-sub{padding-left:46px}.lf-step-sub > :is(h3,h4,h5){margin:12px 0 2px;font-size:17px}.lf-steps-qa .lf-step-item::before{content:"?"}.lf-steps .v4-rich li::marker{color:var(--lf-ice-deep);font-weight:700}.lf-after{margin-top:32px;padding:16px 20px;background:var(--lf-note)}.lf-after h2{margin:0;font-size:19px}.lf-after ol{margin:4px 0 0}.lf-turn{display:flex;flex-wrap:wrap;column-gap:24px;margin-top:48px;padding-top:16px;border-top:2px dashed var(--lf-rule)}.lf-turn 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720px){.lf-span{padding-inline:16px}.lf-desk-in{display:none}.lf-name{font-size:16px}.lf-book{margin-bottom:40px;border-right:0;border-left:0;border-radius:0}.lf-book::before{left:30px}.lf-book::after{display:none}.lf-book .lf-span{padding-left:46px}.lf-sticky{max-width:calc(100% - 62px);margin-left:46px}.lf-cover h1{font-size:28px}.lf-underline{font-size:20px}.lf-buttons .lf-button{flex:1 1 100%}.lf-heading,.lf-bell h2{font-size:23px}.lf-subjects,.lf-questions,.lf-rest ul{grid-template-columns:minmax(0, 1fr)}.lf-front{padding:18px}.lf-front .lf-button{justify-self:stretch}.lf-back-grid{grid-template-columns:minmax(0, 1fr)}.lf-back-nav{grid-template-columns:repeat(2, minmax(0, 1fr));column-gap:18px}.lf-back-legal{flex-direction:column}.lf-pagetop h1{font-size:27px}.lf-step-item,.lf-step-sub{padding-left:40px}}.v4-loft .lf-desk .lf-span,.v4-loft [data-v4-primary-nav]{box-sizing:border-box;width:min(1120px, calc(100% - 2px));max-width:1120px;margin-inline:auto;padding-left:104px;padding-right:32px}@media (max-width: 720px){.v4-loft .lf-desk .lf-span,.v4-loft [data-v4-primary-nav]{width:min(1120px, 100%);padding-left:46px;padding-right:16px}}.v4-loft{--v4-notice-bg:rgb(255, 244, 194);--v4-notice-ink:rgb(16, 42, 51)}.v4.v4-loft .v4-top-announcement-inner{width:100%;max-width:none;padding-left:0;padding-right:0}.v4.v4-loft .v4-top-announcement-inner{max-width:1120px;padding-inline:32px;padding-inline-start:32px;padding-inline-end:32px}@media (max-width: 720px){.v4.v4-loft .v4-top-announcement-inner{padding-inline:16px;padding-inline-start:16px;padding-inline-end:16px}}.v4.v4-loft .v4-top-announcement-inner{width:min(1120px, 100% - 2px);max-width:1120px;padding-left:104px;padding-right:32px}@media (max-width: 720px){.v4.v4-loft .v4-top-announcement-inner{width:min(1120px, 100%);padding-left:46px;padding-right:16px}}