/*! tailwindcss v4.2.1 | MIT License | https://tailwindcss.com */
@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.relative{position:relative}.static{position:static}.start{inset-inline-start:var(--spacing)}.table{display:table}}:root{--ink:#173f3a;--ink-deep:#102e2a;--muted:#6c7771;--paper:#f6f1e7;--card:#fffdf8;--line:#d9d4c9;--coral:#ed684d;--coral-soft:#ffe4dc;--teal:#297d73;--teal-soft:#d9efea;--gold:#f0bd4f;--gold-soft:#fff1c8;--blue:#537ca1;--blue-soft:#e5edf5;--shadow:0 18px 50px #1c342d1a}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:radial-gradient(circle at 4% 0%, #f0bd4f2e, transparent 24rem), var(--paper);color:var(--ink-deep);text-rendering:optimizelegibility;margin:0;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}button,input{font:inherit}button{color:inherit;cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}img{max-width:100%;display:block}::selection{background:var(--gold-soft);color:var(--ink-deep)}.app-shell{min-height:100vh;padding-bottom:26px}.site-header{z-index:40;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#fffdf8e6;border:1px solid #173f3a29;border-radius:20px;grid-template-columns:1fr auto 1fr;align-items:center;gap:22px;width:min(1240px,100% - 32px);min-height:70px;margin:10px auto 0;padding:10px 12px 10px 18px;display:grid;position:sticky;top:10px;box-shadow:0 10px 35px #1a332d17}.brand{text-align:left;background:0 0;border:0;align-items:center;gap:11px;width:fit-content;padding:0;display:flex}.brand>span:last-child{display:grid}.brand strong{letter-spacing:.08em;font-size:18px}.brand small{color:var(--muted);letter-spacing:.14em;margin-top:2px;font-size:10px}.brand-mark{background:var(--ink);border-radius:13px;grid-template-columns:repeat(3,1fr);align-items:end;gap:3px;width:41px;height:41px;padding:8px;display:grid;transform:rotate(-2deg)}.brand-mark i{background:var(--gold);border-radius:2px 2px 0 0;display:block}.brand-mark i:first-child{height:42%}.brand-mark i:nth-child(2){height:72%}.brand-mark i:nth-child(3){background:var(--coral);height:100%}.primary-nav{border:1px solid var(--line);background:#f3eee5;border-radius:13px;gap:3px;padding:4px;display:flex}.primary-nav button{min-height:38px;color:var(--muted);background:0 0;border:0;border-radius:9px;padding:0 17px;font-size:13px;font-weight:700}.primary-nav button.active{background:var(--card);color:var(--ink);box-shadow:0 4px 15px #173f3a1a}.header-badge{background:var(--teal-soft);text-align:right;border-radius:12px;justify-self:end;gap:1px;padding:8px 12px;display:grid}.header-badge span{color:var(--teal);font-size:10px;font-weight:800}.header-badge strong{font-size:13px}.hero{grid-template-columns:minmax(0,1.05fr) minmax(400px,.95fr);align-items:center;gap:clamp(38px,7vw,90px);width:min(1180px,100% - 40px);margin:64px auto 34px;display:grid}.eyebrow,.section-kicker{color:var(--coral);letter-spacing:.14em;text-transform:uppercase;font-size:11px;font-weight:900}.hero-copy h1{letter-spacing:-.055em;max-width:660px;margin:12px 0 18px;font-family:Georgia,Songti SC,STSong,serif;font-size:clamp(49px,6.4vw,84px);line-height:.98}.hero-copy h1 em{color:var(--coral);font-style:normal;display:block}.hero-copy>p{color:#5f6d67;max-width:610px;margin:0;font-size:16px;line-height:1.9}.hero-actions{flex-wrap:wrap;gap:10px;margin-top:28px;display:flex}.button{border:1px solid var(--ink);border-radius:13px;justify-content:center;align-items:center;gap:15px;min-height:48px;padding:0 20px;font-size:14px;font-weight:800;transition:transform .18s,box-shadow .18s;display:inline-flex}.button:hover{transform:translateY(-2px)}.button-primary{background:var(--ink);color:#fff;box-shadow:0 9px 24px #173f3a38}.button-primary span{color:var(--gold)}.button-ghost{background:#fffdf88f}.hero-board{background:var(--ink);color:#fff;box-shadow:18px 20px 0 var(--gold), var(--shadow);border:1px solid #173f3a38;border-radius:26px;padding:clamp(22px,4vw,34px);transform:rotate(1deg)}.board-topline{color:#ffffffa6;justify-content:space-between;gap:14px;font-size:11px;font-weight:700;display:flex}.status-dot{color:#c8f0e7}.status-dot:before{content:"";background:#74d1bd;border-radius:50%;width:6px;height:6px;margin-right:6px;display:inline-block;box-shadow:0 0 0 4px #74d1bd1f}.hero-metrics{grid-template-columns:repeat(3,1fr);margin:25px 0 21px;display:grid}.hero-metrics>div{border-right:1px solid #ffffff26;padding:0 17px}.hero-metrics>div:first-child{padding-left:0}.hero-metrics>div:last-child{border-right:0}.hero-metrics strong{color:var(--gold);font:700 34px Georgia,serif;display:block}.hero-metrics span{color:#ffffffa3;font-size:11px}.mini-map{flex-wrap:wrap;gap:7px;display:flex}.mini-pill{border:0;border-radius:999px;align-items:center;gap:9px;min-height:32px;padding:0 8px 0 11px;font-size:11px;font-weight:700;display:inline-flex}.mini-pill b{background:#ffffffad;border-radius:50%;place-items:center;min-width:20px;height:20px;display:grid}.tone-1{background:var(--coral-soft);color:#8f3225}.tone-2{background:var(--teal-soft);color:#22675f}.tone-3{background:var(--gold-soft);color:#795a13}.tone-4{background:var(--blue-soft);color:#385f82}.board-note{background:#ffffff12;border:1px solid #ffffff1f;border-radius:14px;align-items:center;gap:12px;margin-top:19px;padding:14px;display:flex}.note-icon{background:var(--coral);border-radius:50%;flex:0 0 29px;place-items:center;width:29px;height:29px;font-weight:900;display:grid}.board-note strong{font-size:12px}.board-note p{color:#ffffff9e;margin:3px 0 0;font-size:10px}.cup-switcher{grid-template-columns:repeat(2,1fr);gap:14px;width:min(1180px,100% - 40px);margin:60px auto 48px;display:grid}.cup-card{border:1px solid var(--line);text-align:left;background:#fffdf89e;border-radius:19px;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:15px;min-height:112px;padding:15px 17px;transition:border-color .18s,background .18s,transform .18s;display:grid}.cup-card:hover{transform:translateY(-2px)}.cup-card.selected{border-color:var(--ink);background:var(--card);box-shadow:0 9px 30px #173f3a14}.cup-monogram{background:var(--coral-soft);width:62px;height:62px;color:var(--coral);border-radius:16px;place-items:center;font:700 28px Georgia,serif;display:grid}.cup-card.teal .cup-monogram{background:var(--teal-soft);color:var(--teal)}.cup-copy{min-width:0;display:grid}.cup-copy strong{font-size:18px}.cup-copy small{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;margin-top:2px;font-size:11px;overflow:hidden}.cup-copy em{color:var(--coral);margin-top:9px;font-size:10px;font-style:normal;font-weight:800}.cup-card.teal .cup-copy em{color:var(--teal)}.cup-count{text-align:center;min-width:55px}.cup-count b{font:700 25px Georgia,serif;display:block}.cup-count small{color:var(--muted);font-size:9px}.content-section,.empty-cup{width:min(1180px,100% - 40px);margin:0 auto}.section-heading{justify-content:space-between;align-items:end;gap:28px;margin-bottom:23px;display:flex}.section-heading h2{margin:6px 0 0;font-family:Georgia,Songti SC,STSong,serif;font-size:clamp(31px,4vw,48px);line-height:1.08}.section-heading>p{max-width:440px;color:var(--muted);margin:0;font-size:13px;line-height:1.7}.knowledge-grid{grid-template-columns:repeat(4,1fr);gap:11px;display:grid}.knowledge-card{text-align:left;border:0;border-radius:18px;flex-direction:column;align-items:flex-start;min-height:166px;padding:17px;transition:transform .18s,box-shadow .18s;display:flex;position:relative}.knowledge-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)rotate(-.4deg)}.knowledge-index{opacity:.58;font:700 12px Georgia,serif}.knowledge-card>strong{max-width:80%;margin-top:30px;font-size:18px}.knowledge-meta{opacity:.75;margin-top:7px;font-size:10px}.knowledge-meta b{font:700 17px Georgia,serif}.knowledge-arrow{border:1px solid;border-radius:50%;place-items:center;width:30px;height:30px;display:grid;position:absolute;top:14px;right:14px}.spotlight{background:#e8e1d5;border-radius:25px;grid-template-columns:1.2fr .8fr;align-items:center;gap:42px;margin-top:42px;padding:clamp(25px,4.5vw,54px);display:grid}.spotlight-copy h3{max-width:650px;margin:8px 0 12px;font:700 clamp(27px,4vw,43px)/1.2 Georgia,Songti SC,serif}.spotlight-copy p{color:#596760;max-width:650px;font-size:13px;line-height:1.8}.text-link{border:0;border-bottom:1px solid var(--ink);background:0 0;padding:7px 0;font-size:12px;font-weight:900}.text-link span{color:var(--coral);margin-left:9px}.spotlight-card{background:var(--card);min-height:170px;box-shadow:12px 12px 0 var(--coral);border:1px solid #173f3a2b;border-radius:20px;align-items:center;gap:18px;padding:22px;display:flex;transform:rotate(1.5deg)}.spotlight-number{background:var(--ink);width:70px;height:89px;color:var(--gold);border-radius:13px;flex:0 0 70px;place-items:center;font:700 39px Georgia,serif;display:grid}.spotlight-card>div:last-child{gap:6px;display:grid}.spotlight-card span{color:var(--coral);font-size:10px;font-weight:900}.spotlight-card strong{font-size:17px}.spotlight-card small{color:var(--muted);line-height:1.55}.empty-cup{border:1px dashed var(--teal);background:var(--teal-soft);border-radius:25px;justify-content:center;align-items:center;gap:28px;min-height:330px;padding:45px;display:flex}.empty-symbol{background:var(--teal);color:#fff;border-radius:25px;flex:0 0 88px;place-items:center;width:88px;height:88px;font:700 39px Georgia,serif;display:grid}.empty-cup h2{margin:7px 0 8px;font:700 34px/1.2 Georgia,Songti SC,serif}.empty-cup p{max-width:600px;color:var(--muted);margin:0;line-height:1.7}.compact-heading{align-items:center}.search-box{border:1px solid var(--line);background:var(--card);border-radius:13px;align-items:center;gap:9px;width:min(360px,100%);min-height:46px;padding:0 14px;display:flex}.search-box span{color:var(--coral);font-size:21px}.search-box input{min-width:0;color:var(--ink-deep);background:0 0;border:0;outline:0;flex:1;font-size:13px}.filter-row{scrollbar-width:thin;gap:7px;margin:18px 0;padding-bottom:5px;display:flex;overflow-x:auto}.filter-row button{border:1px solid var(--line);background:var(--card);min-height:36px;color:var(--muted);border-radius:999px;flex:none;padding:0 11px;font-size:11px}.filter-row button b{color:var(--coral);margin-left:4px}.filter-row button.active{border-color:var(--ink);background:var(--ink);color:#fff}.filter-row button.active b{color:var(--gold)}.library-layout{grid-template-columns:minmax(330px,.85fr) minmax(480px,1.15fr);align-items:start;gap:17px;display:grid}.question-list{border:1px solid var(--line);background:#fffdf894;border-radius:18px;max-height:760px;padding:8px;overflow-y:auto}.list-count{color:var(--muted);padding:8px 10px 12px;font-size:10px;font-weight:800}.question-row{text-align:left;background:0 0;border:0;border-radius:13px;grid-template-columns:43px minmax(0,1fr) auto;align-items:start;gap:12px;width:100%;padding:13px;display:grid}.question-row+.question-row{margin-top:3px}.question-row:hover{background:#eee8de}.question-row.active{background:var(--ink);color:#fff}.question-no{background:var(--gold-soft);color:#7d5c14;border-radius:11px;place-items:center;width:43px;height:43px;font:700 15px Georgia,serif;display:grid}.question-row.active .question-no{background:var(--gold);color:var(--ink-deep)}.question-row-copy{gap:5px;min-width:0;display:grid}.row-meta{color:var(--coral);font-size:9px;font-weight:900}.question-row.active .row-meta{color:var(--gold)}.question-row-copy strong{text-overflow:ellipsis;white-space:nowrap;font-size:12px;line-height:1.55;overflow:hidden}.question-row-copy small{color:var(--muted);font-size:9px}.question-row.active .question-row-copy small{color:#ffffff8c}.error-chip{background:var(--coral-soft);color:#9f3829;white-space:nowrap;border-radius:7px;padding:4px 6px;font-size:8px;font-weight:900}.no-results{background:var(--card);color:var(--muted);text-align:center;border-radius:16px;padding:42px 20px}.question-detail{border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow);border-radius:20px;padding:clamp(21px,3vw,34px);position:sticky;top:98px}.detail-head{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.detail-source{color:var(--muted);font-size:10px;font-weight:700}.detail-head h3{margin:4px 0 0;font:700 32px Georgia,Songti SC,serif}.verify-badge{border-radius:999px;padding:6px 9px;font-size:9px;font-weight:900}.verify-badge.ok{background:var(--teal-soft);color:var(--teal)}.verify-badge.warn{background:var(--coral-soft);color:#9f3829}.view-toggle{border:1px solid var(--line);background:#f0ebe2;border-radius:10px;width:fit-content;margin:21px 0 13px;padding:3px;display:flex}.view-toggle button{min-height:32px;color:var(--muted);background:0 0;border:0;border-radius:7px;padding:0 12px;font-size:10px;font-weight:800}.view-toggle button.active{color:var(--ink);background:#fff;box-shadow:0 3px 9px #173f3a17}.stem-panel{background:#fbf7ef;border:1px solid #d5d0c4;border-radius:14px;place-items:center;min-height:116px;padding:20px;display:grid}.stem-panel p{width:100%;margin:0;font-family:Georgia,Songti SC,serif;font-size:17px;line-height:1.85}.stem-panel img{object-fit:contain;max-height:460px;margin:auto}.tag-list{flex-wrap:wrap;gap:6px;margin:13px 0 20px;display:flex}.tag-list span{background:var(--blue-soft);color:#416684;border-radius:7px;padding:5px 8px;font-size:9px;font-weight:800}.solution-block{border-top:1px solid var(--line);padding:18px 0}.solution-block.idea-block{background:var(--gold-soft);border:0;border-radius:13px;padding:17px}.block-label{color:var(--coral);letter-spacing:.08em;font-size:10px;font-weight:900}.solution-block p,.solution-block ol{margin:8px 0 0;font-size:13px;line-height:1.85}.solution-block ol{padding-left:21px}.solution-block li+li{margin-top:5px}.answer-panel{background:var(--teal-soft);border-radius:14px;grid-template-columns:repeat(2,1fr);gap:10px;padding:15px;display:grid}.answer-panel.has-warning{background:var(--coral-soft)}.answer-panel>div{border-left:2px solid var(--teal);gap:3px;padding:2px 9px;display:grid}.answer-panel.has-warning>div{border-color:var(--coral)}.answer-panel span{color:var(--muted);font-size:9px}.answer-panel strong{font-size:16px}.practice-layout{grid-template-columns:250px minmax(0,1fr);align-items:start;gap:18px;display:grid}.practice-sidebar{border:1px solid var(--line);background:var(--card);border-radius:17px;gap:4px;padding:10px;display:grid}.practice-sidebar>span{color:var(--muted);padding:8px 9px 12px;font-size:10px;font-weight:900}.practice-sidebar button{min-height:42px;color:var(--muted);text-align:left;background:0 0;border:0;border-radius:10px;justify-content:space-between;align-items:center;padding:0 11px;font-size:11px;display:flex}.practice-sidebar button b{background:#eee8de;border-radius:50%;place-items:center;width:24px;height:24px;font-size:9px;display:grid}.practice-sidebar button.active{background:var(--ink);color:#fff}.practice-sidebar button.active b{background:var(--gold);color:var(--ink-deep)}.practice-card{border:1px solid var(--line);background:var(--card);min-height:580px;box-shadow:var(--shadow);border-radius:23px;padding:clamp(24px,4vw,45px)}.practice-progress{color:var(--muted);justify-content:space-between;gap:18px;font-size:10px;font-weight:800;display:flex}.progress-track{background:#e6e0d6;border-radius:999px;height:5px;margin:10px 0 28px;overflow:hidden}.progress-track i{border-radius:inherit;background:var(--coral);height:100%;transition:width .25s;display:block}.practice-topic{background:var(--gold-soft);color:#755614;border-radius:7px;padding:5px 8px;font-size:9px;font-weight:900}.practice-card h3{max-width:840px;margin:18px 0 20px;font:700 clamp(21px,3.4vw,34px)/1.65 Georgia,Songti SC,serif}.original-details{border:1px solid var(--line);background:#fbf7ef;border-radius:13px;margin-bottom:22px}.original-details summary{color:var(--teal);cursor:pointer;padding:12px 15px;font-size:11px;font-weight:900}.original-details img{object-fit:contain;max-height:450px;margin:0 auto;padding:6px 15px 18px}.thinking-zone{text-align:center;border:1px dashed #b9b2a7;border-radius:17px;padding:23px}.thinking-zone p{color:var(--muted);font-size:11px}.thinking-lines{gap:14px;margin-bottom:18px;display:grid}.thinking-lines i{background:#d8d2c7;height:1px;display:block}.thinking-zone .button{margin-top:7px}.revealed-solution{background:#eef4f0;border-radius:17px;padding:22px}.revealed-solution>span{color:var(--teal);font-size:10px;font-weight:900}.revealed-solution p,.revealed-solution ol{font-size:13px;line-height:1.8}.revealed-solution ol{padding-left:21px}.practice-answer{background:var(--ink);color:#fff;border-radius:12px;justify-content:space-between;align-items:center;margin:20px 0;padding:15px;display:flex}.practice-answer span{font-size:10px}.practice-answer strong{color:var(--gold);font-size:21px}.mobile-bottom-nav{display:none}footer{border-top:1px solid var(--line);width:min(1180px,100% - 40px);color:var(--muted);justify-content:space-between;gap:20px;margin:50px auto 0;padding-top:18px;font-size:9px;display:flex}button:focus-visible,input:focus-visible,summary:focus-visible{outline-offset:2px;outline:3px solid #ed684d59}@media (width<=1020px){.hero{grid-template-columns:1fr 390px;gap:32px}.hero-copy h1{font-size:57px}.knowledge-grid{grid-template-columns:repeat(3,1fr)}.library-layout{grid-template-columns:340px minmax(0,1fr)}.spotlight{grid-template-columns:1fr 340px}}@media (width<=820px){.site-header{grid-template-columns:1fr auto}.primary-nav{display:none}.hero{grid-template-columns:1fr;margin-top:46px}.hero-copy{text-align:center}.hero-copy h1,.hero-copy>p{margin-left:auto;margin-right:auto}.hero-actions{justify-content:center}.hero-board{width:min(560px,100% - 18px);margin:0 auto}.knowledge-grid{grid-template-columns:repeat(2,1fr)}.spotlight{grid-template-columns:1fr}.spotlight-card{width:min(430px,100%)}.library-layout{grid-template-columns:1fr}.question-list{max-height:520px}.question-detail{position:static}.practice-layout{grid-template-columns:1fr}.practice-sidebar{display:flex;overflow-x:auto}.practice-sidebar>span{display:none}.practice-sidebar button{flex:none;gap:12px}}@media (width<=700px){body{background:var(--paper)}.app-shell{padding-bottom:calc(94px + env(safe-area-inset-bottom))}.site-header{color:#fff;background:#173f3af7;border:0;border-bottom:1px solid #ffffff1f;border-radius:0;width:100%;min-height:63px;margin:0;padding:8px 15px;top:0}.brand-mark{background:#ffffff14;border:1px solid #ffffff2e;width:36px;height:36px}.brand strong{font-size:16px}.brand small{color:#ffffff8c;font-size:8px}.header-badge{background:#ffffff1a;padding:6px 9px}.header-badge span{color:#a4dccf;font-size:8px}.header-badge strong{font-size:11px}.hero{background:var(--ink);color:#fff;gap:35px;width:100%;margin:0;padding:39px 17px 29px}.hero-copy{text-align:left}.eyebrow{color:var(--gold);font-size:9px}.hero-copy h1{color:#fff;margin:11px 0 15px;font-size:clamp(45px,14vw,62px)}.hero-copy>p{color:#ffffffad;font-size:13px;line-height:1.75}.hero-actions{justify-content:stretch}.hero-actions .button{flex:1;min-width:140px}.button-primary{border-color:var(--gold);background:var(--gold);color:var(--ink-deep);box-shadow:none}.button-primary span{color:var(--coral)}.button-ghost{color:#fff;background:0 0;border-color:#fff6}.hero-board{width:calc(100% - 7px);box-shadow:7px 8px 0 var(--gold);background:#22534d;border-color:#ffffff2e;padding:20px;transform:none}.hero-metrics{margin-top:20px}.hero-metrics strong{font-size:28px}.mini-map{flex-wrap:nowrap;overflow-x:auto}.mini-pill{flex:none}.cup-switcher{scroll-snap-type:x mandatory;scrollbar-width:none;gap:9px;width:100%;margin:19px 0 35px;padding:0 14px 6px;display:flex;overflow-x:auto}.cup-switcher::-webkit-scrollbar{display:none}.cup-card{scroll-snap-align:center;flex:0 0 88%;min-width:305px;min-height:103px;padding:13px}.cup-monogram{width:54px;height:54px}.cup-copy strong{font-size:16px}.content-section,.empty-cup{width:100%;padding-left:14px;padding-right:14px}.section-heading{flex-direction:column;align-items:flex-start;gap:7px;margin-bottom:17px}.section-heading h2{font-size:31px}.section-heading>p{font-size:11px}.knowledge-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.knowledge-card{min-height:139px;padding:14px}.knowledge-card>strong{margin-top:23px;font-size:15px}.knowledge-arrow{width:27px;height:27px}.spotlight{border-radius:19px;gap:26px;margin-top:27px;padding:22px 17px 29px}.spotlight-copy h3{font-size:28px}.spotlight-card{box-shadow:7px 7px 0 var(--coral);padding:17px}.spotlight-number{flex-basis:58px;width:58px;height:72px;font-size:31px}.spotlight-card strong{font-size:14px}.empty-cup{flex-direction:column;align-items:flex-start;width:calc(100% - 28px);min-height:340px;padding:28px 20px}.empty-cup h2{font-size:28px}.compact-heading{gap:17px}.search-box{width:100%}.filter-row{margin:12px -14px 15px;padding:0 14px 7px}.question-list{max-height:440px;padding:6px}.question-row{grid-template-columns:39px minmax(0,1fr) auto;gap:9px;min-height:72px;padding:10px 9px}.question-no{width:39px;height:39px}.question-detail{box-shadow:none;border-radius:17px;padding:19px 15px}.detail-head{align-items:flex-start}.detail-head h3{font-size:27px}.stem-panel{padding:15px}.stem-panel p{font-size:16px;line-height:1.8}.answer-panel{grid-template-columns:1fr}.practice-sidebar{background:0 0;border:0;border-radius:0;margin:0 -14px;padding:0 14px 7px}.practice-card{min-height:520px;box-shadow:none;border-radius:18px;margin:0 -1px;padding:22px 16px}.practice-card h3{font-size:22px;line-height:1.65}.thinking-zone,.revealed-solution{padding:17px}.mobile-bottom-nav{left:10px;right:10px;bottom:max(9px, env(safe-area-inset-bottom));z-index:60;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#173f3af5;border:1px solid #ffffff1a;border-radius:18px;grid-template-columns:repeat(3,1fr);padding:6px;display:grid;position:fixed;box-shadow:0 12px 35px #0e27234d}.mobile-bottom-nav button{color:#ffffff85;background:0 0;border:0;border-radius:12px;align-content:center;place-items:center;gap:1px;min-height:48px;display:grid}.mobile-bottom-nav button>span{font-size:18px;line-height:1}.mobile-bottom-nav button small{font-size:9px}.mobile-bottom-nav button.active{color:var(--gold);background:#ffffff1a}footer{gap:5px;width:calc(100% - 28px);margin-top:35px;padding-bottom:5px;display:grid}}@media (width<=390px){.hero-copy h1{font-size:44px}.hero-actions{grid-template-columns:1fr;display:grid}.knowledge-grid{grid-template-columns:1fr}.knowledge-card{min-height:112px}.knowledge-card>strong{margin-top:16px}.cup-card{min-width:285px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}